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37 files changed, 7505 insertions, 0 deletions
diff --git a/cmds/app_process/Android.mk b/cmds/app_process/Android.mk new file mode 100644 index 0000000..b39c335 --- /dev/null +++ b/cmds/app_process/Android.mk @@ -0,0 +1,41 @@ +LOCAL_PATH:= $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES:= \ + app_main.cpp + +LOCAL_SHARED_LIBRARIES := \ + libcutils \ + libutils \ + libbinder \ + libandroid_runtime + +LOCAL_MODULE:= app_process + +include $(BUILD_EXECUTABLE) + + +# Build a variant of app_process binary linked with ASan runtime. +# ARM-only at the moment. +ifeq ($(TARGET_ARCH),arm) + +include $(CLEAR_VARS) + +LOCAL_SRC_FILES:= \ + app_main.cpp + +LOCAL_SHARED_LIBRARIES := \ + libcutils \ + libutils \ + libbinder \ + libandroid_runtime + +LOCAL_MODULE := app_process__asan +LOCAL_MODULE_TAGS := eng +LOCAL_MODULE_PATH := $(TARGET_OUT_EXECUTABLES)/asan +LOCAL_MODULE_STEM := app_process +LOCAL_ADDRESS_SANITIZER := true + +include $(BUILD_EXECUTABLE) + +endif # ifeq($(TARGET_ARCH),arm) diff --git a/cmds/app_process/MODULE_LICENSE_APACHE2 b/cmds/app_process/MODULE_LICENSE_APACHE2 new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/cmds/app_process/MODULE_LICENSE_APACHE2 diff --git a/cmds/app_process/NOTICE b/cmds/app_process/NOTICE new file mode 100644 index 0000000..c5b1efa --- /dev/null +++ b/cmds/app_process/NOTICE @@ -0,0 +1,190 @@ + + Copyright (c) 2005-2008, The Android Open Source Project + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. 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For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. For the purposes of this definition, "submitted" + means any form of electronic, verbal, or written communication sent + to the Licensor or its representatives, including but not limited to + communication on electronic mailing lists, source code control systems, + and issue tracking systems that are managed by, or on behalf of, the + Licensor for the purpose of discussing and improving the Work, but + excluding communication that is conspicuously marked or otherwise + designated in writing by the copyright owner as "Not a Contribution." + + "Contributor" shall mean Licensor and any individual or Legal Entity + on behalf of whom a Contribution has been received by Licensor and + subsequently incorporated within the Work. + + 2. Grant of Copyright License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. 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In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + diff --git a/cmds/app_process/app_main.cpp b/cmds/app_process/app_main.cpp new file mode 100644 index 0000000..6fe358c --- /dev/null +++ b/cmds/app_process/app_main.cpp @@ -0,0 +1,204 @@ +/* + * Main entry of app process. + * + * Starts the interpreted runtime, then starts up the application. + * + */ + +#define LOG_TAG "appproc" + +#include <binder/IPCThreadState.h> +#include <binder/ProcessState.h> +#include <utils/Log.h> +#include <cutils/process_name.h> +#include <cutils/memory.h> +#include <android_runtime/AndroidRuntime.h> + +#include <stdio.h> +#include <unistd.h> + +namespace android { + +void app_usage() +{ + fprintf(stderr, + "Usage: app_process [java-options] cmd-dir start-class-name [options]\n"); +} + +class AppRuntime : public AndroidRuntime +{ +public: + AppRuntime() + : mParentDir(NULL) + , mClassName(NULL) + , mClass(NULL) + , mArgC(0) + , mArgV(NULL) + { + } + +#if 0 + // this appears to be unused + const char* getParentDir() const + { + return mParentDir; + } +#endif + + const char* getClassName() const + { + return mClassName; + } + + virtual void onVmCreated(JNIEnv* env) + { + if (mClassName == NULL) { + return; // Zygote. Nothing to do here. + } + + /* + * This is a little awkward because the JNI FindClass call uses the + * class loader associated with the native method we're executing in. + * If called in onStarted (from RuntimeInit.finishInit because we're + * launching "am", for example), FindClass would see that we're calling + * from a boot class' native method, and so wouldn't look for the class + * we're trying to look up in CLASSPATH. Unfortunately it needs to, + * because the "am" classes are not boot classes. + * + * The easiest fix is to call FindClass here, early on before we start + * executing boot class Java code and thereby deny ourselves access to + * non-boot classes. + */ + char* slashClassName = toSlashClassName(mClassName); + mClass = env->FindClass(slashClassName); + if (mClass == NULL) { + ALOGE("ERROR: could not find class '%s'\n", mClassName); + } + free(slashClassName); + + mClass = reinterpret_cast<jclass>(env->NewGlobalRef(mClass)); + } + + virtual void onStarted() + { + sp<ProcessState> proc = ProcessState::self(); + ALOGV("App process: starting thread pool.\n"); + proc->startThreadPool(); + + AndroidRuntime* ar = AndroidRuntime::getRuntime(); + ar->callMain(mClassName, mClass, mArgC, mArgV); + + IPCThreadState::self()->stopProcess(); + } + + virtual void onZygoteInit() + { + sp<ProcessState> proc = ProcessState::self(); + ALOGV("App process: starting thread pool.\n"); + proc->startThreadPool(); + } + + virtual void onExit(int code) + { + if (mClassName == NULL) { + // if zygote + IPCThreadState::self()->stopProcess(); + } + + AndroidRuntime::onExit(code); + } + + + const char* mParentDir; + const char* mClassName; + jclass mClass; + int mArgC; + const char* const* mArgV; +}; + +} + +using namespace android; + +/* + * sets argv0 to as much of newArgv0 as will fit + */ +static void setArgv0(const char *argv0, const char *newArgv0) +{ + strlcpy(const_cast<char *>(argv0), newArgv0, strlen(argv0)); +} + +int main(int argc, const char* const argv[]) +{ + // These are global variables in ProcessState.cpp + mArgC = argc; + mArgV = argv; + + mArgLen = 0; + for (int i=0; i<argc; i++) { + mArgLen += strlen(argv[i]) + 1; + } + mArgLen--; + + AppRuntime runtime; + const char* argv0 = argv[0]; + + // Process command line arguments + // ignore argv[0] + argc--; + argv++; + + // Everything up to '--' or first non '-' arg goes to the vm + + int i = runtime.addVmArguments(argc, argv); + + // Parse runtime arguments. Stop at first unrecognized option. + bool zygote = false; + bool startSystemServer = false; + bool application = false; + const char* parentDir = NULL; + const char* niceName = NULL; + const char* className = NULL; + while (i < argc) { + const char* arg = argv[i++]; + if (!parentDir) { + parentDir = arg; + } else if (strcmp(arg, "--zygote") == 0) { + zygote = true; + niceName = "zygote"; + } else if (strcmp(arg, "--start-system-server") == 0) { + startSystemServer = true; + } else if (strcmp(arg, "--application") == 0) { + application = true; + } else if (strncmp(arg, "--nice-name=", 12) == 0) { + niceName = arg + 12; + } else { + className = arg; + break; + } + } + + if (niceName && *niceName) { + setArgv0(argv0, niceName); + set_process_name(niceName); + } + + runtime.mParentDir = parentDir; + + if (zygote) { + runtime.start("com.android.internal.os.ZygoteInit", + startSystemServer ? "start-system-server" : ""); + } else if (className) { + // Remainder of args get passed to startup class main() + runtime.mClassName = className; + runtime.mArgC = argc - i; + runtime.mArgV = argv + i; + runtime.start("com.android.internal.os.RuntimeInit", + application ? "application" : "tool"); + } else { + fprintf(stderr, "Error: no class name or --zygote supplied.\n"); + app_usage(); + LOG_ALWAYS_FATAL("app_process: no class name or --zygote supplied."); + return 10; + } +} diff --git a/cmds/bugreport/Android.mk b/cmds/bugreport/Android.mk new file mode 100644 index 0000000..f476f5e --- /dev/null +++ b/cmds/bugreport/Android.mk @@ -0,0 +1,10 @@ +LOCAL_PATH:= $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES:= bugreport.c + +LOCAL_MODULE:= bugreport + +LOCAL_SHARED_LIBRARIES := libcutils + +include $(BUILD_EXECUTABLE) diff --git a/cmds/bugreport/bugreport.c b/cmds/bugreport/bugreport.c new file mode 100644 index 0000000..4a0b511 --- /dev/null +++ b/cmds/bugreport/bugreport.c @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2009 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#include <cutils/properties.h> +#include <cutils/sockets.h> + +int main(int argc, char *argv[]) { + char buffer[65536]; + int i, s; + + /* start the dumpstate service */ + property_set("ctl.start", "dumpstate"); + + /* socket will not be available until service starts */ + for (i = 0; i < 10; i++) { + s = socket_local_client("dumpstate", + ANDROID_SOCKET_NAMESPACE_RESERVED, + SOCK_STREAM); + if (s >= 0) + break; + /* try again in 1 second */ + sleep(1); + } + + if (s < 0) { + fprintf(stderr, "Failed to connect to dumpstate service\n"); + exit(1); + } + + while (1) { + int length = read(s, buffer, sizeof(buffer)); + if (length <= 0) + break; + fwrite(buffer, 1, length, stdout); + } + + close(s); + return 0; +} diff --git a/cmds/installd/Android.mk b/cmds/installd/Android.mk new file mode 100644 index 0000000..1dd4ee5 --- /dev/null +++ b/cmds/installd/Android.mk @@ -0,0 +1,42 @@ +LOCAL_PATH := $(call my-dir) + +common_src_files := \ + commands.c utils.c + +# +# Static library used in testing and executable +# + +include $(CLEAR_VARS) + +LOCAL_SRC_FILES := \ + $(common_src_files) + +LOCAL_MODULE := libinstalld + +LOCAL_MODULE_TAGS := eng tests + +include $(BUILD_STATIC_LIBRARY) + +# +# Executable +# + +include $(CLEAR_VARS) + +LOCAL_SRC_FILES := \ + installd.c \ + $(common_src_files) + +LOCAL_SHARED_LIBRARIES := \ + libcutils \ + libselinux + +LOCAL_STATIC_LIBRARIES := \ + libdiskusage + +LOCAL_MODULE := installd + +LOCAL_MODULE_TAGS := optional + +include $(BUILD_EXECUTABLE) diff --git a/cmds/installd/commands.c b/cmds/installd/commands.c new file mode 100644 index 0000000..59bcda1 --- /dev/null +++ b/cmds/installd/commands.c @@ -0,0 +1,1136 @@ +/* +** Copyright 2008, The Android Open Source Project +** +** Licensed under the Apache License, Version 2.0 (the "License"); +** you may not use this file except in compliance with the License. +** You may obtain a copy of the License at +** +** http://www.apache.org/licenses/LICENSE-2.0 +** +** Unless required by applicable law or agreed to in writing, software +** distributed under the License is distributed on an "AS IS" BASIS, +** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +** See the License for the specific language governing permissions and +** limitations under the License. +*/ + +#include <linux/capability.h> +#include "installd.h" +#include <diskusage/dirsize.h> +#include <selinux/android.h> + +/* Directory records that are used in execution of commands. */ +dir_rec_t android_data_dir; +dir_rec_t android_asec_dir; +dir_rec_t android_app_dir; +dir_rec_t android_app_private_dir; +dir_rec_t android_app_lib_dir; +dir_rec_t android_media_dir; +dir_rec_array_t android_system_dirs; + +int install(const char *pkgname, uid_t uid, gid_t gid) +{ + char pkgdir[PKG_PATH_MAX]; + char libsymlink[PKG_PATH_MAX]; + char applibdir[PKG_PATH_MAX]; + struct stat libStat; + + if ((uid < AID_SYSTEM) || (gid < AID_SYSTEM)) { + ALOGE("invalid uid/gid: %d %d\n", uid, gid); + return -1; + } + + if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, 0)) { + ALOGE("cannot create package path\n"); + return -1; + } + + if (create_pkg_path(libsymlink, pkgname, PKG_LIB_POSTFIX, 0)) { + ALOGE("cannot create package lib symlink origin path\n"); + return -1; + } + + if (create_pkg_path_in_dir(applibdir, &android_app_lib_dir, pkgname, PKG_DIR_POSTFIX)) { + ALOGE("cannot create package lib symlink dest path\n"); + return -1; + } + + if (mkdir(pkgdir, 0751) < 0) { + ALOGE("cannot create dir '%s': %s\n", pkgdir, strerror(errno)); + return -1; + } + if (chmod(pkgdir, 0751) < 0) { + ALOGE("cannot chmod dir '%s': %s\n", pkgdir, strerror(errno)); + unlink(pkgdir); + return -1; + } + + if (lstat(libsymlink, &libStat) < 0) { + if (errno != ENOENT) { + ALOGE("couldn't stat lib dir: %s\n", strerror(errno)); + return -1; + } + } else { + if (S_ISDIR(libStat.st_mode)) { + if (delete_dir_contents(libsymlink, 1, 0) < 0) { + ALOGE("couldn't delete lib directory during install for: %s", libsymlink); + return -1; + } + } else if (S_ISLNK(libStat.st_mode)) { + if (unlink(libsymlink) < 0) { + ALOGE("couldn't unlink lib directory during install for: %s", libsymlink); + return -1; + } + } + } + + if (symlink(applibdir, libsymlink) < 0) { + ALOGE("couldn't symlink directory '%s' -> '%s': %s\n", libsymlink, applibdir, + strerror(errno)); + unlink(pkgdir); + return -1; + } + + if (selinux_android_setfilecon(libsymlink, pkgname, AID_SYSTEM) < 0) { + ALOGE("cannot setfilecon dir '%s': %s\n", libsymlink, strerror(errno)); + unlink(libsymlink); + unlink(pkgdir); + return -1; + } + + if (selinux_android_setfilecon(pkgdir, pkgname, uid) < 0) { + ALOGE("cannot setfilecon dir '%s': %s\n", pkgdir, strerror(errno)); + unlink(libsymlink); + unlink(pkgdir); + return -errno; + } + + if (chown(pkgdir, uid, gid) < 0) { + ALOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno)); + unlink(libsymlink); + unlink(pkgdir); + return -1; + } + + return 0; +} + +int uninstall(const char *pkgname, uid_t persona) +{ + char pkgdir[PKG_PATH_MAX]; + + if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, persona)) + return -1; + + /* delete contents AND directory, no exceptions */ + return delete_dir_contents(pkgdir, 1, NULL); +} + +int renamepkg(const char *oldpkgname, const char *newpkgname) +{ + char oldpkgdir[PKG_PATH_MAX]; + char newpkgdir[PKG_PATH_MAX]; + + if (create_pkg_path(oldpkgdir, oldpkgname, PKG_DIR_POSTFIX, 0)) + return -1; + if (create_pkg_path(newpkgdir, newpkgname, PKG_DIR_POSTFIX, 0)) + return -1; + + if (rename(oldpkgdir, newpkgdir) < 0) { + ALOGE("cannot rename dir '%s' to '%s': %s\n", oldpkgdir, newpkgdir, strerror(errno)); + return -errno; + } + return 0; +} + +int fix_uid(const char *pkgname, uid_t uid, gid_t gid) +{ + char pkgdir[PKG_PATH_MAX]; + struct stat s; + int rc = 0; + + if ((uid < AID_SYSTEM) || (gid < AID_SYSTEM)) { + ALOGE("invalid uid/gid: %d %d\n", uid, gid); + return -1; + } + + if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, 0)) { + ALOGE("cannot create package path\n"); + return -1; + } + + if (stat(pkgdir, &s) < 0) return -1; + + if (s.st_uid != 0 || s.st_gid != 0) { + ALOGE("fixing uid of non-root pkg: %s %lu %lu\n", pkgdir, s.st_uid, s.st_gid); + return -1; + } + + if (chmod(pkgdir, 0751) < 0) { + ALOGE("cannot chmod dir '%s': %s\n", pkgdir, strerror(errno)); + unlink(pkgdir); + return -errno; + } + if (chown(pkgdir, uid, gid) < 0) { + ALOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno)); + unlink(pkgdir); + return -errno; + } + + return 0; +} + +int delete_user_data(const char *pkgname, uid_t persona) +{ + char pkgdir[PKG_PATH_MAX]; + + if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, persona)) + return -1; + + /* delete contents, excluding "lib", but not the directory itself */ + return delete_dir_contents(pkgdir, 0, "lib"); +} + +int make_user_data(const char *pkgname, uid_t uid, uid_t persona) +{ + char pkgdir[PKG_PATH_MAX]; + char applibdir[PKG_PATH_MAX]; + char libsymlink[PKG_PATH_MAX]; + struct stat libStat; + + // Create the data dir for the package + if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, persona)) { + return -1; + } + if (create_pkg_path(libsymlink, pkgname, PKG_LIB_POSTFIX, persona)) { + ALOGE("cannot create package lib symlink origin path\n"); + return -1; + } + if (create_pkg_path_in_dir(applibdir, &android_app_lib_dir, pkgname, PKG_DIR_POSTFIX)) { + ALOGE("cannot create package lib symlink dest path\n"); + return -1; + } + + if (mkdir(pkgdir, 0751) < 0) { + ALOGE("cannot create dir '%s': %s\n", pkgdir, strerror(errno)); + return -errno; + } + if (chmod(pkgdir, 0751) < 0) { + ALOGE("cannot chmod dir '%s': %s\n", pkgdir, strerror(errno)); + unlink(pkgdir); + return -errno; + } + + if (lstat(libsymlink, &libStat) < 0) { + if (errno != ENOENT) { + ALOGE("couldn't stat lib dir for non-primary: %s\n", strerror(errno)); + unlink(pkgdir); + return -1; + } + } else { + if (S_ISDIR(libStat.st_mode)) { + if (delete_dir_contents(libsymlink, 1, 0) < 0) { + ALOGE("couldn't delete lib directory during install for non-primary: %s", + libsymlink); + unlink(pkgdir); + return -1; + } + } else if (S_ISLNK(libStat.st_mode)) { + if (unlink(libsymlink) < 0) { + ALOGE("couldn't unlink lib directory during install for non-primary: %s", + libsymlink); + unlink(pkgdir); + return -1; + } + } + } + + if (symlink(applibdir, libsymlink) < 0) { + ALOGE("couldn't symlink directory for non-primary '%s' -> '%s': %s\n", libsymlink, + applibdir, strerror(errno)); + unlink(pkgdir); + return -1; + } + + if (selinux_android_setfilecon(libsymlink, pkgname, AID_SYSTEM) < 0) { + ALOGE("cannot setfilecon dir '%s': %s\n", libsymlink, strerror(errno)); + unlink(libsymlink); + unlink(pkgdir); + return -errno; + } + + if (selinux_android_setfilecon(pkgdir, pkgname, uid) < 0) { + ALOGE("cannot setfilecon dir '%s': %s\n", pkgdir, strerror(errno)); + unlink(libsymlink); + unlink(pkgdir); + return -errno; + } + + if (chown(pkgdir, uid, uid) < 0) { + ALOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno)); + unlink(libsymlink); + unlink(pkgdir); + return -errno; + } + + return 0; +} + +int delete_persona(uid_t persona) +{ + char data_path[PKG_PATH_MAX]; + if (create_persona_path(data_path, persona)) { + return -1; + } + if (delete_dir_contents(data_path, 1, NULL)) { + return -1; + } + + char media_path[PATH_MAX]; + if (create_persona_media_path(media_path, (userid_t) persona) == -1) { + return -1; + } + if (delete_dir_contents(media_path, 1, NULL) == -1) { + return -1; + } + + return 0; +} + +int clone_persona_data(uid_t src_persona, uid_t target_persona, int copy) +{ + char src_data_dir[PKG_PATH_MAX]; + char pkg_path[PKG_PATH_MAX]; + DIR *d; + struct dirent *de; + struct stat s; + uid_t uid; + + if (create_persona_path(src_data_dir, src_persona)) { + return -1; + } + + d = opendir(src_data_dir); + if (d != NULL) { + while ((de = readdir(d))) { + const char *name = de->d_name; + + if (de->d_type == DT_DIR) { + int subfd; + /* always skip "." and ".." */ + if (name[0] == '.') { + if (name[1] == 0) continue; + if ((name[1] == '.') && (name[2] == 0)) continue; + } + /* Create the full path to the package's data dir */ + create_pkg_path(pkg_path, name, PKG_DIR_POSTFIX, src_persona); + /* Get the file stat */ + if (stat(pkg_path, &s) < 0) continue; + /* Get the uid of the package */ + ALOGI("Adding datadir for uid = %lu\n", s.st_uid); + uid = (uid_t) s.st_uid % PER_USER_RANGE; + /* Create the directory for the target */ + make_user_data(name, uid + target_persona * PER_USER_RANGE, + target_persona); + } + } + closedir(d); + } + + if (ensure_media_user_dirs((userid_t) target_persona) == -1) { + return -1; + } + + return 0; +} + +int delete_cache(const char *pkgname, uid_t persona) +{ + char cachedir[PKG_PATH_MAX]; + + if (create_pkg_path(cachedir, pkgname, CACHE_DIR_POSTFIX, persona)) + return -1; + + /* delete contents, not the directory, no exceptions */ + return delete_dir_contents(cachedir, 0, 0); +} + +/* Try to ensure free_size bytes of storage are available. + * Returns 0 on success. + * This is rather simple-minded because doing a full LRU would + * be potentially memory-intensive, and without atime it would + * also require that apps constantly modify file metadata even + * when just reading from the cache, which is pretty awful. + */ +int free_cache(int64_t free_size) +{ + cache_t* cache; + int64_t avail; + DIR *d; + struct dirent *de; + char tmpdir[PATH_MAX]; + char *dirpos; + + avail = data_disk_free(); + if (avail < 0) return -1; + + ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", free_size, avail); + if (avail >= free_size) return 0; + + cache = start_cache_collection(); + + // Collect cache files for primary user. + if (create_persona_path(tmpdir, 0) == 0) { + //ALOGI("adding cache files from %s\n", tmpdir); + add_cache_files(cache, tmpdir, "cache"); + } + + // Search for other users and add any cache files from them. + snprintf(tmpdir, sizeof(tmpdir), "%s%s", android_data_dir.path, + SECONDARY_USER_PREFIX); + dirpos = tmpdir + strlen(tmpdir); + d = opendir(tmpdir); + if (d != NULL) { + while ((de = readdir(d))) { + if (de->d_type == DT_DIR) { + const char *name = de->d_name; + /* always skip "." and ".." */ + if (name[0] == '.') { + if (name[1] == 0) continue; + if ((name[1] == '.') && (name[2] == 0)) continue; + } + if ((strlen(name)+(dirpos-tmpdir)) < (sizeof(tmpdir)-1)) { + strcpy(dirpos, name); + //ALOGI("adding cache files from %s\n", tmpdir); + add_cache_files(cache, tmpdir, "cache"); + } else { + ALOGW("Path exceeds limit: %s%s", tmpdir, name); + } + } + } + closedir(d); + } + + // Collect cache files on external storage for all users (if it is mounted as part + // of the internal storage). + strcpy(tmpdir, android_media_dir.path); + dirpos = tmpdir + strlen(tmpdir); + d = opendir(tmpdir); + if (d != NULL) { + while ((de = readdir(d))) { + if (de->d_type == DT_DIR) { + const char *name = de->d_name; + /* skip any dir that doesn't start with a number, so not a user */ + if (name[0] < '0' || name[0] > '9') { + continue; + } + if ((strlen(name)+(dirpos-tmpdir)) < (sizeof(tmpdir)-1)) { + strcpy(dirpos, name); + if (lookup_media_dir(tmpdir, "Android") == 0 + && lookup_media_dir(tmpdir, "data") == 0) { + //ALOGI("adding cache files from %s\n", tmpdir); + add_cache_files(cache, tmpdir, "cache"); + } + } else { + ALOGW("Path exceeds limit: %s%s", tmpdir, name); + } + } + } + closedir(d); + } + + clear_cache_files(cache, free_size); + finish_cache_collection(cache); + + return data_disk_free() >= free_size ? 0 : -1; +} + +int move_dex(const char *src, const char *dst) +{ + char src_dex[PKG_PATH_MAX]; + char dst_dex[PKG_PATH_MAX]; + + if (validate_apk_path(src)) return -1; + if (validate_apk_path(dst)) return -1; + + if (create_cache_path(src_dex, src)) return -1; + if (create_cache_path(dst_dex, dst)) return -1; + + ALOGV("move %s -> %s\n", src_dex, dst_dex); + if (rename(src_dex, dst_dex) < 0) { + ALOGE("Couldn't move %s: %s\n", src_dex, strerror(errno)); + return -1; + } else { + return 0; + } +} + +int rm_dex(const char *path) +{ + char dex_path[PKG_PATH_MAX]; + + if (validate_apk_path(path)) return -1; + if (create_cache_path(dex_path, path)) return -1; + + ALOGV("unlink %s\n", dex_path); + if (unlink(dex_path) < 0) { + ALOGE("Couldn't unlink %s: %s\n", dex_path, strerror(errno)); + return -1; + } else { + return 0; + } +} + +int get_size(const char *pkgname, int persona, const char *apkpath, + const char *fwdlock_apkpath, const char *asecpath, + int64_t *_codesize, int64_t *_datasize, int64_t *_cachesize, + int64_t* _asecsize) +{ + DIR *d; + int dfd; + struct dirent *de; + struct stat s; + char path[PKG_PATH_MAX]; + + int64_t codesize = 0; + int64_t datasize = 0; + int64_t cachesize = 0; + int64_t asecsize = 0; + + /* count the source apk as code -- but only if it's not + * on the /system partition and its not on the sdcard. + */ + if (validate_system_app_path(apkpath) && + strncmp(apkpath, android_asec_dir.path, android_asec_dir.len) != 0) { + if (stat(apkpath, &s) == 0) { + codesize += stat_size(&s); + } + } + /* count the forward locked apk as code if it is given + */ + if (fwdlock_apkpath != NULL && fwdlock_apkpath[0] != '!') { + if (stat(fwdlock_apkpath, &s) == 0) { + codesize += stat_size(&s); + } + } + /* count the cached dexfile as code */ + if (!create_cache_path(path, apkpath)) { + if (stat(path, &s) == 0) { + codesize += stat_size(&s); + } + } + + /* add in size of any libraries */ + if (!create_pkg_path_in_dir(path, &android_app_lib_dir, pkgname, PKG_DIR_POSTFIX)) { + d = opendir(path); + if (d != NULL) { + dfd = dirfd(d); + codesize += calculate_dir_size(dfd); + closedir(d); + } + } + + /* compute asec size if it is given + */ + if (asecpath != NULL && asecpath[0] != '!') { + if (stat(asecpath, &s) == 0) { + asecsize += stat_size(&s); + } + } + + if (create_pkg_path(path, pkgname, PKG_DIR_POSTFIX, persona)) { + goto done; + } + + d = opendir(path); + if (d == NULL) { + goto done; + } + dfd = dirfd(d); + + /* most stuff in the pkgdir is data, except for the "cache" + * directory and below, which is cache, and the "lib" directory + * and below, which is code... + */ + while ((de = readdir(d))) { + const char *name = de->d_name; + + if (de->d_type == DT_DIR) { + int subfd; + int64_t statsize = 0; + int64_t dirsize = 0; + /* always skip "." and ".." */ + if (name[0] == '.') { + if (name[1] == 0) continue; + if ((name[1] == '.') && (name[2] == 0)) continue; + } + if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { + statsize = stat_size(&s); + } + subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); + if (subfd >= 0) { + dirsize = calculate_dir_size(subfd); + } + if(!strcmp(name,"lib")) { + codesize += dirsize + statsize; + } else if(!strcmp(name,"cache")) { + cachesize += dirsize + statsize; + } else { + datasize += dirsize + statsize; + } + } else if (de->d_type == DT_LNK && !strcmp(name,"lib")) { + // This is the symbolic link to the application's library + // code. We'll count this as code instead of data, since + // it is not something that the app creates. + if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { + codesize += stat_size(&s); + } + } else { + if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { + datasize += stat_size(&s); + } + } + } + closedir(d); +done: + *_codesize = codesize; + *_datasize = datasize; + *_cachesize = cachesize; + *_asecsize = asecsize; + return 0; +} + + +/* a simpler version of dexOptGenerateCacheFileName() */ +int create_cache_path(char path[PKG_PATH_MAX], const char *src) +{ + char *tmp; + int srclen; + int dstlen; + + srclen = strlen(src); + + /* demand that we are an absolute path */ + if ((src == 0) || (src[0] != '/') || strstr(src,"..")) { + return -1; + } + + if (srclen > PKG_PATH_MAX) { // XXX: PKG_NAME_MAX? + return -1; + } + + dstlen = srclen + strlen(DALVIK_CACHE_PREFIX) + + strlen(DALVIK_CACHE_POSTFIX) + 1; + + if (dstlen > PKG_PATH_MAX) { + return -1; + } + + sprintf(path,"%s%s%s", + DALVIK_CACHE_PREFIX, + src + 1, /* skip the leading / */ + DALVIK_CACHE_POSTFIX); + + for(tmp = path + strlen(DALVIK_CACHE_PREFIX); *tmp; tmp++) { + if (*tmp == '/') { + *tmp = '@'; + } + } + + return 0; +} + +static void run_dexopt(int zip_fd, int odex_fd, const char* input_file_name, + const char* dexopt_flags) +{ + static const char* DEX_OPT_BIN = "/system/bin/dexopt"; + static const int MAX_INT_LEN = 12; // '-'+10dig+'\0' -OR- 0x+8dig + char zip_num[MAX_INT_LEN]; + char odex_num[MAX_INT_LEN]; + + sprintf(zip_num, "%d", zip_fd); + sprintf(odex_num, "%d", odex_fd); + + execl(DEX_OPT_BIN, DEX_OPT_BIN, "--zip", zip_num, odex_num, input_file_name, + dexopt_flags, (char*) NULL); + ALOGE("execl(%s) failed: %s\n", DEX_OPT_BIN, strerror(errno)); +} + +static int wait_dexopt(pid_t pid, const char* apk_path) +{ + int status; + pid_t got_pid; + + /* + * Wait for the optimization process to finish. + */ + while (1) { + got_pid = waitpid(pid, &status, 0); + if (got_pid == -1 && errno == EINTR) { + printf("waitpid interrupted, retrying\n"); + } else { + break; + } + } + if (got_pid != pid) { + ALOGW("waitpid failed: wanted %d, got %d: %s\n", + (int) pid, (int) got_pid, strerror(errno)); + return 1; + } + + if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { + ALOGV("DexInv: --- END '%s' (success) ---\n", apk_path); + return 0; + } else { + ALOGW("DexInv: --- END '%s' --- status=0x%04x, process failed\n", + apk_path, status); + return status; /* always nonzero */ + } +} + +int dexopt(const char *apk_path, uid_t uid, int is_public) +{ + struct utimbuf ut; + struct stat apk_stat, dex_stat; + char dex_path[PKG_PATH_MAX]; + char dexopt_flags[PROPERTY_VALUE_MAX]; + char *end; + int res, zip_fd=-1, odex_fd=-1; + + /* Before anything else: is there a .odex file? If so, we have + * pre-optimized the apk and there is nothing to do here. + */ + if (strlen(apk_path) >= (PKG_PATH_MAX - 8)) { + return -1; + } + + /* platform-specific flags affecting optimization and verification */ + property_get("dalvik.vm.dexopt-flags", dexopt_flags, ""); + + strcpy(dex_path, apk_path); + end = strrchr(dex_path, '.'); + if (end != NULL) { + strcpy(end, ".odex"); + if (stat(dex_path, &dex_stat) == 0) { + return 0; + } + } + + if (create_cache_path(dex_path, apk_path)) { + return -1; + } + + memset(&apk_stat, 0, sizeof(apk_stat)); + stat(apk_path, &apk_stat); + + zip_fd = open(apk_path, O_RDONLY, 0); + if (zip_fd < 0) { + ALOGE("dexopt cannot open '%s' for input\n", apk_path); + return -1; + } + + unlink(dex_path); + odex_fd = open(dex_path, O_RDWR | O_CREAT | O_EXCL, 0644); + if (odex_fd < 0) { + ALOGE("dexopt cannot open '%s' for output\n", dex_path); + goto fail; + } + if (fchmod(odex_fd, + S_IRUSR|S_IWUSR|S_IRGRP | + (is_public ? S_IROTH : 0)) < 0) { + ALOGE("dexopt cannot chmod '%s'\n", dex_path); + goto fail; + } + if (fchown(odex_fd, AID_SYSTEM, uid) < 0) { + ALOGE("dexopt cannot chown '%s'\n", dex_path); + goto fail; + } + + ALOGV("DexInv: --- BEGIN '%s' ---\n", apk_path); + + pid_t pid; + pid = fork(); + if (pid == 0) { + /* child -- drop privileges before continuing */ + if (setgid(uid) != 0) { + ALOGE("setgid(%d) failed during dexopt\n", uid); + exit(64); + } + if (setuid(uid) != 0) { + ALOGE("setuid(%d) during dexopt\n", uid); + exit(65); + } + // drop capabilities + struct __user_cap_header_struct capheader; + struct __user_cap_data_struct capdata[2]; + memset(&capheader, 0, sizeof(capheader)); + memset(&capdata, 0, sizeof(capdata)); + capheader.version = _LINUX_CAPABILITY_VERSION_3; + if (capset(&capheader, &capdata[0]) < 0) { + ALOGE("capset failed: %s\n", strerror(errno)); + exit(66); + } + if (flock(odex_fd, LOCK_EX | LOCK_NB) != 0) { + ALOGE("flock(%s) failed: %s\n", dex_path, strerror(errno)); + exit(67); + } + + run_dexopt(zip_fd, odex_fd, apk_path, dexopt_flags); + exit(68); /* only get here on exec failure */ + } else { + res = wait_dexopt(pid, apk_path); + if (res != 0) { + ALOGE("dexopt failed on '%s' res = %d\n", dex_path, res); + goto fail; + } + } + + ut.actime = apk_stat.st_atime; + ut.modtime = apk_stat.st_mtime; + utime(dex_path, &ut); + + close(odex_fd); + close(zip_fd); + return 0; + +fail: + if (odex_fd >= 0) { + close(odex_fd); + unlink(dex_path); + } + if (zip_fd >= 0) { + close(zip_fd); + } + return -1; +} + +void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, + struct stat* statbuf) +{ + while (path[basepos] != 0) { + if (path[basepos] == '/') { + path[basepos] = 0; + if (lstat(path, statbuf) < 0) { + ALOGV("Making directory: %s\n", path); + if (mkdir(path, mode) == 0) { + chown(path, uid, gid); + } else { + ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); + } + } + path[basepos] = '/'; + basepos++; + } + basepos++; + } +} + +int movefileordir(char* srcpath, char* dstpath, int dstbasepos, + int dstuid, int dstgid, struct stat* statbuf) +{ + DIR *d; + struct dirent *de; + int res; + + int srcend = strlen(srcpath); + int dstend = strlen(dstpath); + + if (lstat(srcpath, statbuf) < 0) { + ALOGW("Unable to stat %s: %s\n", srcpath, strerror(errno)); + return 1; + } + + if ((statbuf->st_mode&S_IFDIR) == 0) { + mkinnerdirs(dstpath, dstbasepos, S_IRWXU|S_IRWXG|S_IXOTH, + dstuid, dstgid, statbuf); + ALOGV("Renaming %s to %s (uid %d)\n", srcpath, dstpath, dstuid); + if (rename(srcpath, dstpath) >= 0) { + if (chown(dstpath, dstuid, dstgid) < 0) { + ALOGE("cannot chown %s: %s\n", dstpath, strerror(errno)); + unlink(dstpath); + return 1; + } + } else { + ALOGW("Unable to rename %s to %s: %s\n", + srcpath, dstpath, strerror(errno)); + return 1; + } + return 0; + } + + d = opendir(srcpath); + if (d == NULL) { + ALOGW("Unable to opendir %s: %s\n", srcpath, strerror(errno)); + return 1; + } + + res = 0; + + while ((de = readdir(d))) { + const char *name = de->d_name; + /* always skip "." and ".." */ + if (name[0] == '.') { + if (name[1] == 0) continue; + if ((name[1] == '.') && (name[2] == 0)) continue; + } + + if ((srcend+strlen(name)) >= (PKG_PATH_MAX-2)) { + ALOGW("Source path too long; skipping: %s/%s\n", srcpath, name); + continue; + } + + if ((dstend+strlen(name)) >= (PKG_PATH_MAX-2)) { + ALOGW("Destination path too long; skipping: %s/%s\n", dstpath, name); + continue; + } + + srcpath[srcend] = dstpath[dstend] = '/'; + strcpy(srcpath+srcend+1, name); + strcpy(dstpath+dstend+1, name); + + if (movefileordir(srcpath, dstpath, dstbasepos, dstuid, dstgid, statbuf) != 0) { + res = 1; + } + + // Note: we will be leaving empty directories behind in srcpath, + // but that is okay, the package manager will be erasing all of the + // data associated with .apks that disappear. + + srcpath[srcend] = dstpath[dstend] = 0; + } + + closedir(d); + return res; +} + +int movefiles() +{ + DIR *d; + int dfd, subfd; + struct dirent *de; + struct stat s; + char buf[PKG_PATH_MAX+1]; + int bufp, bufe, bufi, readlen; + + char srcpkg[PKG_NAME_MAX]; + char dstpkg[PKG_NAME_MAX]; + char srcpath[PKG_PATH_MAX]; + char dstpath[PKG_PATH_MAX]; + int dstuid=-1, dstgid=-1; + int hasspace; + + d = opendir(UPDATE_COMMANDS_DIR_PREFIX); + if (d == NULL) { + goto done; + } + dfd = dirfd(d); + + /* Iterate through all files in the directory, executing the + * file movements requested there-in. + */ + while ((de = readdir(d))) { + const char *name = de->d_name; + + if (de->d_type == DT_DIR) { + continue; + } else { + subfd = openat(dfd, name, O_RDONLY); + if (subfd < 0) { + ALOGW("Unable to open update commands at %s%s\n", + UPDATE_COMMANDS_DIR_PREFIX, name); + continue; + } + + bufp = 0; + bufe = 0; + buf[PKG_PATH_MAX] = 0; + srcpkg[0] = dstpkg[0] = 0; + while (1) { + bufi = bufp; + while (bufi < bufe && buf[bufi] != '\n') { + bufi++; + } + if (bufi < bufe) { + buf[bufi] = 0; + ALOGV("Processing line: %s\n", buf+bufp); + hasspace = 0; + while (bufp < bufi && isspace(buf[bufp])) { + hasspace = 1; + bufp++; + } + if (buf[bufp] == '#' || bufp == bufi) { + // skip comments and empty lines. + } else if (hasspace) { + if (dstpkg[0] == 0) { + ALOGW("Path before package line in %s%s: %s\n", + UPDATE_COMMANDS_DIR_PREFIX, name, buf+bufp); + } else if (srcpkg[0] == 0) { + // Skip -- source package no longer exists. + } else { + ALOGV("Move file: %s (from %s to %s)\n", buf+bufp, srcpkg, dstpkg); + if (!create_move_path(srcpath, srcpkg, buf+bufp, 0) && + !create_move_path(dstpath, dstpkg, buf+bufp, 0)) { + movefileordir(srcpath, dstpath, + strlen(dstpath)-strlen(buf+bufp), + dstuid, dstgid, &s); + } + } + } else { + char* div = strchr(buf+bufp, ':'); + if (div == NULL) { + ALOGW("Bad package spec in %s%s; no ':' sep: %s\n", + UPDATE_COMMANDS_DIR_PREFIX, name, buf+bufp); + } else { + *div = 0; + div++; + if (strlen(buf+bufp) < PKG_NAME_MAX) { + strcpy(dstpkg, buf+bufp); + } else { + srcpkg[0] = dstpkg[0] = 0; + ALOGW("Package name too long in %s%s: %s\n", + UPDATE_COMMANDS_DIR_PREFIX, name, buf+bufp); + } + if (strlen(div) < PKG_NAME_MAX) { + strcpy(srcpkg, div); + } else { + srcpkg[0] = dstpkg[0] = 0; + ALOGW("Package name too long in %s%s: %s\n", + UPDATE_COMMANDS_DIR_PREFIX, name, div); + } + if (srcpkg[0] != 0) { + if (!create_pkg_path(srcpath, srcpkg, PKG_DIR_POSTFIX, 0)) { + if (lstat(srcpath, &s) < 0) { + // Package no longer exists -- skip. + srcpkg[0] = 0; + } + } else { + srcpkg[0] = 0; + ALOGW("Can't create path %s in %s%s\n", + div, UPDATE_COMMANDS_DIR_PREFIX, name); + } + if (srcpkg[0] != 0) { + if (!create_pkg_path(dstpath, dstpkg, PKG_DIR_POSTFIX, 0)) { + if (lstat(dstpath, &s) == 0) { + dstuid = s.st_uid; + dstgid = s.st_gid; + } else { + // Destination package doesn't + // exist... due to original-package, + // this is normal, so don't be + // noisy about it. + srcpkg[0] = 0; + } + } else { + srcpkg[0] = 0; + ALOGW("Can't create path %s in %s%s\n", + div, UPDATE_COMMANDS_DIR_PREFIX, name); + } + } + ALOGV("Transfering from %s to %s: uid=%d\n", + srcpkg, dstpkg, dstuid); + } + } + } + bufp = bufi+1; + } else { + if (bufp == 0) { + if (bufp < bufe) { + ALOGW("Line too long in %s%s, skipping: %s\n", + UPDATE_COMMANDS_DIR_PREFIX, name, buf); + } + } else if (bufp < bufe) { + memcpy(buf, buf+bufp, bufe-bufp); + bufe -= bufp; + bufp = 0; + } + readlen = read(subfd, buf+bufe, PKG_PATH_MAX-bufe); + if (readlen < 0) { + ALOGW("Failure reading update commands in %s%s: %s\n", + UPDATE_COMMANDS_DIR_PREFIX, name, strerror(errno)); + break; + } else if (readlen == 0) { + break; + } + bufe += readlen; + buf[bufe] = 0; + ALOGV("Read buf: %s\n", buf); + } + } + close(subfd); + } + } + closedir(d); +done: + return 0; +} + +int linklib(const char* pkgname, const char* asecLibDir, int userId) +{ + char pkgdir[PKG_PATH_MAX]; + char libsymlink[PKG_PATH_MAX]; + struct stat s, libStat; + int rc = 0; + + if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, userId)) { + ALOGE("cannot create package path\n"); + return -1; + } + if (create_pkg_path(libsymlink, pkgname, PKG_LIB_POSTFIX, userId)) { + ALOGE("cannot create package lib symlink origin path\n"); + return -1; + } + + if (stat(pkgdir, &s) < 0) return -1; + + if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { + ALOGE("failed to chown '%s': %s\n", pkgdir, strerror(errno)); + return -1; + } + + if (chmod(pkgdir, 0700) < 0) { + ALOGE("linklib() 1: failed to chmod '%s': %s\n", pkgdir, strerror(errno)); + rc = -1; + goto out; + } + + if (lstat(libsymlink, &libStat) < 0) { + if (errno != ENOENT) { + ALOGE("couldn't stat lib dir: %s\n", strerror(errno)); + rc = -1; + goto out; + } + } else { + if (S_ISDIR(libStat.st_mode)) { + if (delete_dir_contents(libsymlink, 1, 0) < 0) { + rc = -1; + goto out; + } + } else if (S_ISLNK(libStat.st_mode)) { + if (unlink(libsymlink) < 0) { + ALOGE("couldn't unlink lib dir: %s\n", strerror(errno)); + rc = -1; + goto out; + } + } + } + + if (symlink(asecLibDir, libsymlink) < 0) { + ALOGE("couldn't symlink directory '%s' -> '%s': %s\n", libsymlink, asecLibDir, + strerror(errno)); + rc = -errno; + goto out; + } + +out: + if (chmod(pkgdir, s.st_mode) < 0) { + ALOGE("linklib() 2: failed to chmod '%s': %s\n", pkgdir, strerror(errno)); + rc = -errno; + } + + if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { + ALOGE("failed to chown '%s' : %s\n", pkgdir, strerror(errno)); + return -errno; + } + + return rc; +} diff --git a/cmds/installd/installd.c b/cmds/installd/installd.c new file mode 100644 index 0000000..21d674a --- /dev/null +++ b/cmds/installd/installd.c @@ -0,0 +1,592 @@ +/* +** Copyright 2008, The Android Open Source Project +** +** Licensed under the Apache License, Version 2.0 (the "License"); +** you may not use this file except in compliance with the License. +** You may obtain a copy of the License at +** +** http://www.apache.org/licenses/LICENSE-2.0 +** +** Unless required by applicable law or agreed to in writing, software +** distributed under the License is distributed on an "AS IS" BASIS, +** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +** See the License for the specific language governing permissions and +** limitations under the License. +*/ + +#include <linux/capability.h> +#include <linux/prctl.h> + +#include "installd.h" + + +#define BUFFER_MAX 1024 /* input buffer for commands */ +#define TOKEN_MAX 8 /* max number of arguments in buffer */ +#define REPLY_MAX 256 /* largest reply allowed */ + +static int do_ping(char **arg, char reply[REPLY_MAX]) +{ + return 0; +} + +static int do_install(char **arg, char reply[REPLY_MAX]) +{ + return install(arg[0], atoi(arg[1]), atoi(arg[2])); /* pkgname, uid, gid */ +} + +static int do_dexopt(char **arg, char reply[REPLY_MAX]) +{ + /* apk_path, uid, is_public */ + return dexopt(arg[0], atoi(arg[1]), atoi(arg[2])); +} + +static int do_move_dex(char **arg, char reply[REPLY_MAX]) +{ + return move_dex(arg[0], arg[1]); /* src, dst */ +} + +static int do_rm_dex(char **arg, char reply[REPLY_MAX]) +{ + return rm_dex(arg[0]); /* pkgname */ +} + +static int do_remove(char **arg, char reply[REPLY_MAX]) +{ + return uninstall(arg[0], atoi(arg[1])); /* pkgname, userid */ +} + +static int do_rename(char **arg, char reply[REPLY_MAX]) +{ + return renamepkg(arg[0], arg[1]); /* oldpkgname, newpkgname */ +} + +static int do_fixuid(char **arg, char reply[REPLY_MAX]) +{ + return fix_uid(arg[0], atoi(arg[1]), atoi(arg[2])); /* pkgname, uid, gid */ +} + +static int do_free_cache(char **arg, char reply[REPLY_MAX]) /* TODO int:free_size */ +{ + return free_cache((int64_t)atoll(arg[0])); /* free_size */ +} + +static int do_rm_cache(char **arg, char reply[REPLY_MAX]) +{ + return delete_cache(arg[0], atoi(arg[1])); /* pkgname, userid */ +} + +static int do_get_size(char **arg, char reply[REPLY_MAX]) +{ + int64_t codesize = 0; + int64_t datasize = 0; + int64_t cachesize = 0; + int64_t asecsize = 0; + int res = 0; + + /* pkgdir, persona, apkpath */ + res = get_size(arg[0], atoi(arg[1]), arg[2], arg[3], arg[4], + &codesize, &datasize, &cachesize, &asecsize); + + /* + * Each int64_t can take up 22 characters printed out. Make sure it + * doesn't go over REPLY_MAX in the future. + */ + snprintf(reply, REPLY_MAX, "%" PRId64 " %" PRId64 " %" PRId64 " %" PRId64, + codesize, datasize, cachesize, asecsize); + return res; +} + +static int do_rm_user_data(char **arg, char reply[REPLY_MAX]) +{ + return delete_user_data(arg[0], atoi(arg[1])); /* pkgname, userid */ +} + +static int do_mk_user_data(char **arg, char reply[REPLY_MAX]) +{ + return make_user_data(arg[0], atoi(arg[1]), atoi(arg[2])); /* pkgname, uid, userid */ +} + +static int do_rm_user(char **arg, char reply[REPLY_MAX]) +{ + return delete_persona(atoi(arg[0])); /* userid */ +} + +static int do_clone_user_data(char **arg, char reply[REPLY_MAX]) +{ + return clone_persona_data(atoi(arg[0]), atoi(arg[1]), atoi(arg[2])); +} + +static int do_movefiles(char **arg, char reply[REPLY_MAX]) +{ + return movefiles(); +} + +static int do_linklib(char **arg, char reply[REPLY_MAX]) +{ + return linklib(arg[0], arg[1], atoi(arg[2])); +} + +struct cmdinfo { + const char *name; + unsigned numargs; + int (*func)(char **arg, char reply[REPLY_MAX]); +}; + +struct cmdinfo cmds[] = { + { "ping", 0, do_ping }, + { "install", 3, do_install }, + { "dexopt", 3, do_dexopt }, + { "movedex", 2, do_move_dex }, + { "rmdex", 1, do_rm_dex }, + { "remove", 2, do_remove }, + { "rename", 2, do_rename }, + { "fixuid", 3, do_fixuid }, + { "freecache", 1, do_free_cache }, + { "rmcache", 2, do_rm_cache }, + { "getsize", 5, do_get_size }, + { "rmuserdata", 2, do_rm_user_data }, + { "movefiles", 0, do_movefiles }, + { "linklib", 3, do_linklib }, + { "mkuserdata", 3, do_mk_user_data }, + { "rmuser", 1, do_rm_user }, + { "cloneuserdata", 3, do_clone_user_data }, +}; + +static int readx(int s, void *_buf, int count) +{ + char *buf = _buf; + int n = 0, r; + if (count < 0) return -1; + while (n < count) { + r = read(s, buf + n, count - n); + if (r < 0) { + if (errno == EINTR) continue; + ALOGE("read error: %s\n", strerror(errno)); + return -1; + } + if (r == 0) { + ALOGE("eof\n"); + return -1; /* EOF */ + } + n += r; + } + return 0; +} + +static int writex(int s, const void *_buf, int count) +{ + const char *buf = _buf; + int n = 0, r; + if (count < 0) return -1; + while (n < count) { + r = write(s, buf + n, count - n); + if (r < 0) { + if (errno == EINTR) continue; + ALOGE("write error: %s\n", strerror(errno)); + return -1; + } + n += r; + } + return 0; +} + + +/* Tokenize the command buffer, locate a matching command, + * ensure that the required number of arguments are provided, + * call the function(), return the result. + */ +static int execute(int s, char cmd[BUFFER_MAX]) +{ + char reply[REPLY_MAX]; + char *arg[TOKEN_MAX+1]; + unsigned i; + unsigned n = 0; + unsigned short count; + int ret = -1; + +// ALOGI("execute('%s')\n", cmd); + + /* default reply is "" */ + reply[0] = 0; + + /* n is number of args (not counting arg[0]) */ + arg[0] = cmd; + while (*cmd) { + if (isspace(*cmd)) { + *cmd++ = 0; + n++; + arg[n] = cmd; + if (n == TOKEN_MAX) { + ALOGE("too many arguments\n"); + goto done; + } + } + cmd++; + } + + for (i = 0; i < sizeof(cmds) / sizeof(cmds[0]); i++) { + if (!strcmp(cmds[i].name,arg[0])) { + if (n != cmds[i].numargs) { + ALOGE("%s requires %d arguments (%d given)\n", + cmds[i].name, cmds[i].numargs, n); + } else { + ret = cmds[i].func(arg + 1, reply); + } + goto done; + } + } + ALOGE("unsupported command '%s'\n", arg[0]); + +done: + if (reply[0]) { + n = snprintf(cmd, BUFFER_MAX, "%d %s", ret, reply); + } else { + n = snprintf(cmd, BUFFER_MAX, "%d", ret); + } + if (n > BUFFER_MAX) n = BUFFER_MAX; + count = n; + +// ALOGI("reply: '%s'\n", cmd); + if (writex(s, &count, sizeof(count))) return -1; + if (writex(s, cmd, count)) return -1; + return 0; +} + +/** + * Initialize all the global variables that are used elsewhere. Returns 0 upon + * success and -1 on error. + */ +void free_globals() { + size_t i; + + for (i = 0; i < android_system_dirs.count; i++) { + if (android_system_dirs.dirs[i].path != NULL) { + free(android_system_dirs.dirs[i].path); + } + } + + free(android_system_dirs.dirs); +} + +int initialize_globals() { + // Get the android data directory. + if (get_path_from_env(&android_data_dir, "ANDROID_DATA") < 0) { + return -1; + } + + // Get the android app directory. + if (copy_and_append(&android_app_dir, &android_data_dir, APP_SUBDIR) < 0) { + return -1; + } + + // Get the android protected app directory. + if (copy_and_append(&android_app_private_dir, &android_data_dir, PRIVATE_APP_SUBDIR) < 0) { + return -1; + } + + // Get the android app native library directory. + if (copy_and_append(&android_app_lib_dir, &android_data_dir, APP_LIB_SUBDIR) < 0) { + return -1; + } + + // Get the sd-card ASEC mount point. + if (get_path_from_env(&android_asec_dir, "ASEC_MOUNTPOINT") < 0) { + return -1; + } + + // Get the android media directory. + if (copy_and_append(&android_media_dir, &android_data_dir, MEDIA_SUBDIR) < 0) { + return -1; + } + + // Take note of the system and vendor directories. + android_system_dirs.count = 2; + + android_system_dirs.dirs = calloc(android_system_dirs.count, sizeof(dir_rec_t)); + if (android_system_dirs.dirs == NULL) { + ALOGE("Couldn't allocate array for dirs; aborting\n"); + return -1; + } + + // system + if (get_path_from_env(&android_system_dirs.dirs[0], "ANDROID_ROOT") < 0) { + free_globals(); + return -1; + } + + // append "app/" to dirs[0] + char *system_app_path = build_string2(android_system_dirs.dirs[0].path, APP_SUBDIR); + android_system_dirs.dirs[0].path = system_app_path; + android_system_dirs.dirs[0].len = strlen(system_app_path); + + // vendor + // TODO replace this with an environment variable (doesn't exist yet) + android_system_dirs.dirs[1].path = "/vendor/app/"; + android_system_dirs.dirs[1].len = strlen(android_system_dirs.dirs[1].path); + + return 0; +} + +int initialize_directories() { + int res = -1; + + // Read current filesystem layout version to handle upgrade paths + char version_path[PATH_MAX]; + snprintf(version_path, PATH_MAX, "%s.layout_version", android_data_dir.path); + + int oldVersion; + if (fs_read_atomic_int(version_path, &oldVersion) == -1) { + oldVersion = 0; + } + int version = oldVersion; + + // /data/user + char *user_data_dir = build_string2(android_data_dir.path, SECONDARY_USER_PREFIX); + // /data/data + char *legacy_data_dir = build_string2(android_data_dir.path, PRIMARY_USER_PREFIX); + // /data/user/0 + char *primary_data_dir = build_string3(android_data_dir.path, SECONDARY_USER_PREFIX, "0"); + if (!user_data_dir || !legacy_data_dir || !primary_data_dir) { + goto fail; + } + + // Make the /data/user directory if necessary + if (access(user_data_dir, R_OK) < 0) { + if (mkdir(user_data_dir, 0711) < 0) { + goto fail; + } + if (chown(user_data_dir, AID_SYSTEM, AID_SYSTEM) < 0) { + goto fail; + } + if (chmod(user_data_dir, 0711) < 0) { + goto fail; + } + } + // Make the /data/user/0 symlink to /data/data if necessary + if (access(primary_data_dir, R_OK) < 0) { + if (symlink(legacy_data_dir, primary_data_dir)) { + goto fail; + } + } + + if (version == 0) { + // Introducing multi-user, so migrate /data/media contents into /data/media/0 + ALOGD("Upgrading /data/media for multi-user"); + + // Ensure /data/media + if (fs_prepare_dir(android_media_dir.path, 0770, AID_MEDIA_RW, AID_MEDIA_RW) == -1) { + goto fail; + } + + // /data/media.tmp + char media_tmp_dir[PATH_MAX]; + snprintf(media_tmp_dir, PATH_MAX, "%smedia.tmp", android_data_dir.path); + + // Only copy when upgrade not already in progress + if (access(media_tmp_dir, F_OK) == -1) { + if (rename(android_media_dir.path, media_tmp_dir) == -1) { + ALOGE("Failed to move legacy media path: %s", strerror(errno)); + goto fail; + } + } + + // Create /data/media again + if (fs_prepare_dir(android_media_dir.path, 0770, AID_MEDIA_RW, AID_MEDIA_RW) == -1) { + goto fail; + } + + // /data/media/0 + char owner_media_dir[PATH_MAX]; + snprintf(owner_media_dir, PATH_MAX, "%s0", android_media_dir.path); + + // Move any owner data into place + if (access(media_tmp_dir, F_OK) == 0) { + if (rename(media_tmp_dir, owner_media_dir) == -1) { + ALOGE("Failed to move owner media path: %s", strerror(errno)); + goto fail; + } + } + + // Ensure media directories for any existing users + DIR *dir; + struct dirent *dirent; + char user_media_dir[PATH_MAX]; + + dir = opendir(user_data_dir); + if (dir != NULL) { + while ((dirent = readdir(dir))) { + if (dirent->d_type == DT_DIR) { + const char *name = dirent->d_name; + + // skip "." and ".." + if (name[0] == '.') { + if (name[1] == 0) continue; + if ((name[1] == '.') && (name[2] == 0)) continue; + } + + // /data/media/<user_id> + snprintf(user_media_dir, PATH_MAX, "%s%s", android_media_dir.path, name); + if (fs_prepare_dir(user_media_dir, 0770, AID_MEDIA_RW, AID_MEDIA_RW) == -1) { + goto fail; + } + } + } + closedir(dir); + } + + version = 1; + } + + // /data/media/obb + char media_obb_dir[PATH_MAX]; + snprintf(media_obb_dir, PATH_MAX, "%sobb", android_media_dir.path); + + if (version == 1) { + // Introducing /data/media/obb for sharing OBB across users; migrate + // any existing OBB files from owner. + ALOGD("Upgrading to shared /data/media/obb"); + + // /data/media/0/Android/obb + char owner_obb_path[PATH_MAX]; + snprintf(owner_obb_path, PATH_MAX, "%s0/Android/obb", android_media_dir.path); + + // Only move if target doesn't already exist + if (access(media_obb_dir, F_OK) != 0 && access(owner_obb_path, F_OK) == 0) { + if (rename(owner_obb_path, media_obb_dir) == -1) { + ALOGE("Failed to move OBB from owner: %s", strerror(errno)); + goto fail; + } + } + + version = 2; + } + + if (ensure_media_user_dirs(0) == -1) { + ALOGE("Failed to setup media for user 0"); + goto fail; + } + if (fs_prepare_dir(media_obb_dir, 0770, AID_MEDIA_RW, AID_MEDIA_RW) == -1) { + goto fail; + } + + // Persist layout version if changed + if (version != oldVersion) { + if (fs_write_atomic_int(version_path, version) == -1) { + ALOGE("Failed to save version to %s: %s", version_path, strerror(errno)); + goto fail; + } + } + + // Success! + res = 0; + +fail: + free(user_data_dir); + free(legacy_data_dir); + free(primary_data_dir); + return res; +} + +static void drop_privileges() { + if (prctl(PR_SET_KEEPCAPS, 1) < 0) { + ALOGE("prctl(PR_SET_KEEPCAPS) failed: %s\n", strerror(errno)); + exit(1); + } + + if (setgid(AID_INSTALL) < 0) { + ALOGE("setgid() can't drop privileges; exiting.\n"); + exit(1); + } + + if (setuid(AID_INSTALL) < 0) { + ALOGE("setuid() can't drop privileges; exiting.\n"); + exit(1); + } + + struct __user_cap_header_struct capheader; + struct __user_cap_data_struct capdata[2]; + memset(&capheader, 0, sizeof(capheader)); + memset(&capdata, 0, sizeof(capdata)); + capheader.version = _LINUX_CAPABILITY_VERSION_3; + capheader.pid = 0; + + capdata[CAP_TO_INDEX(CAP_DAC_OVERRIDE)].permitted |= CAP_TO_MASK(CAP_DAC_OVERRIDE); + capdata[CAP_TO_INDEX(CAP_CHOWN)].permitted |= CAP_TO_MASK(CAP_CHOWN); + capdata[CAP_TO_INDEX(CAP_SETUID)].permitted |= CAP_TO_MASK(CAP_SETUID); + capdata[CAP_TO_INDEX(CAP_SETGID)].permitted |= CAP_TO_MASK(CAP_SETGID); + + capdata[0].effective = capdata[0].permitted; + capdata[1].effective = capdata[1].permitted; + capdata[0].inheritable = 0; + capdata[1].inheritable = 0; + + if (capset(&capheader, &capdata[0]) < 0) { + ALOGE("capset failed: %s\n", strerror(errno)); + exit(1); + } +} + +int main(const int argc, const char *argv[]) { + char buf[BUFFER_MAX]; + struct sockaddr addr; + socklen_t alen; + int lsocket, s, count; + + ALOGI("installd firing up\n"); + + if (initialize_globals() < 0) { + ALOGE("Could not initialize globals; exiting.\n"); + exit(1); + } + + if (initialize_directories() < 0) { + ALOGE("Could not create directories; exiting.\n"); + exit(1); + } + + drop_privileges(); + + lsocket = android_get_control_socket(SOCKET_PATH); + if (lsocket < 0) { + ALOGE("Failed to get socket from environment: %s\n", strerror(errno)); + exit(1); + } + if (listen(lsocket, 5)) { + ALOGE("Listen on socket failed: %s\n", strerror(errno)); + exit(1); + } + fcntl(lsocket, F_SETFD, FD_CLOEXEC); + + for (;;) { + alen = sizeof(addr); + s = accept(lsocket, &addr, &alen); + if (s < 0) { + ALOGE("Accept failed: %s\n", strerror(errno)); + continue; + } + fcntl(s, F_SETFD, FD_CLOEXEC); + + ALOGI("new connection\n"); + for (;;) { + unsigned short count; + if (readx(s, &count, sizeof(count))) { + ALOGE("failed to read size\n"); + break; + } + if ((count < 1) || (count >= BUFFER_MAX)) { + ALOGE("invalid size %d\n", count); + break; + } + if (readx(s, buf, count)) { + ALOGE("failed to read command\n"); + break; + } + buf[count] = 0; + if (execute(s, buf)) break; + } + ALOGI("closing connection\n"); + close(s); + } + + return 0; +} diff --git a/cmds/installd/installd.h b/cmds/installd/installd.h new file mode 100644 index 0000000..0500c23 --- /dev/null +++ b/cmds/installd/installd.h @@ -0,0 +1,213 @@ +/* +** +** Copyright 2008, The Android Open Source Project +** +** Licensed under the Apache License, Version 2.0 (the "License"); +** you may not use this file except in compliance with the License. +** You may obtain a copy of the License at +** +** http://www.apache.org/licenses/LICENSE-2.0 +** +** Unless required by applicable law or agreed to in writing, software +** distributed under the License is distributed on an "AS IS" BASIS, +** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +** See the License for the specific language governing permissions and +** limitations under the License. +*/ + +#define LOG_TAG "installd" + +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <inttypes.h> +#include <sys/stat.h> +#include <dirent.h> +#include <unistd.h> +#include <ctype.h> +#include <fcntl.h> +#include <errno.h> +#include <utime.h> +#include <sys/socket.h> +#include <sys/types.h> +#include <sys/wait.h> + +#include <cutils/fs.h> +#include <cutils/sockets.h> +#include <cutils/log.h> +#include <cutils/properties.h> +#include <cutils/multiuser.h> + +#include <private/android_filesystem_config.h> + +#if INCLUDE_SYS_MOUNT_FOR_STATFS +#include <sys/mount.h> +#else +#include <sys/statfs.h> +#endif + +#define SOCKET_PATH "installd" + + +/* elements combined with a valid package name to form paths */ + +#define PRIMARY_USER_PREFIX "data/" +#define SECONDARY_USER_PREFIX "user/" + +#define PKG_DIR_POSTFIX "" + +#define PKG_LIB_POSTFIX "/lib" + +#define CACHE_DIR_POSTFIX "/cache" + +#define APP_SUBDIR "app/" // sub-directory under ANDROID_DATA + +#define APP_LIB_SUBDIR "app-lib/" // sub-directory under ANDROID_DATA + +#define MEDIA_SUBDIR "media/" // sub-directory under ANDROID_DATA + +/* other handy constants */ + +#define PRIVATE_APP_SUBDIR "app-private/" // sub-directory under ANDROID_DATA + +#define DALVIK_CACHE_PREFIX "/data/dalvik-cache/" +#define DALVIK_CACHE_POSTFIX "/classes.dex" + +#define UPDATE_COMMANDS_DIR_PREFIX "/system/etc/updatecmds/" + +#define PKG_NAME_MAX 128 /* largest allowed package name */ +#define PKG_PATH_MAX 256 /* max size of any path we use */ + +#define PER_USER_RANGE ((uid_t)100000) /* range of uids per user + uid = persona * PER_USER_RANGE + appid */ + +/* data structures */ + +typedef struct { + char* path; + size_t len; +} dir_rec_t; + +typedef struct { + size_t count; + dir_rec_t* dirs; +} dir_rec_array_t; + +extern dir_rec_t android_app_dir; +extern dir_rec_t android_app_private_dir; +extern dir_rec_t android_app_lib_dir; +extern dir_rec_t android_data_dir; +extern dir_rec_t android_asec_dir; +extern dir_rec_t android_media_dir; +extern dir_rec_array_t android_system_dirs; + +typedef struct cache_dir_struct { + struct cache_dir_struct* parent; + int32_t childCount; + int32_t hiddenCount; + int32_t deleted; + char name[]; +} cache_dir_t; + +typedef struct { + cache_dir_t* dir; + time_t modTime; + char name[]; +} cache_file_t; + +typedef struct { + size_t numDirs; + size_t availDirs; + cache_dir_t** dirs; + size_t numFiles; + size_t availFiles; + cache_file_t** files; + size_t numCollected; + void* memBlocks; + int8_t* curMemBlockAvail; + int8_t* curMemBlockEnd; +} cache_t; + +/* util.c */ + +int create_pkg_path_in_dir(char path[PKG_PATH_MAX], + const dir_rec_t* dir, + const char* pkgname, + const char* postfix); + +int create_pkg_path(char path[PKG_PATH_MAX], + const char *pkgname, + const char *postfix, + uid_t persona); + +int create_persona_path(char path[PKG_PATH_MAX], + uid_t persona); + +int create_persona_media_path(char path[PKG_PATH_MAX], userid_t userid); + +int create_move_path(char path[PKG_PATH_MAX], + const char* pkgname, + const char* leaf, + uid_t persona); + +int is_valid_package_name(const char* pkgname); + +int create_cache_path(char path[PKG_PATH_MAX], const char *src); + +int delete_dir_contents(const char *pathname, + int also_delete_dir, + const char *ignore); + +int delete_dir_contents_fd(int dfd, const char *name); + +int lookup_media_dir(char basepath[PATH_MAX], const char *dir); + +int64_t data_disk_free(); + +cache_t* start_cache_collection(); + +void add_cache_files(cache_t* cache, const char *basepath, const char *cachedir); + +void clear_cache_files(cache_t* cache, int64_t free_size); + +void finish_cache_collection(cache_t* cache); + +int validate_system_app_path(const char* path); + +int get_path_from_env(dir_rec_t* rec, const char* var); + +int get_path_from_string(dir_rec_t* rec, const char* path); + +int copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix); + +int validate_apk_path(const char *path); + +int append_and_increment(char** dst, const char* src, size_t* dst_size); + +char *build_string2(char *s1, char *s2); +char *build_string3(char *s1, char *s2, char *s3); + +int ensure_dir(const char* path, mode_t mode, uid_t uid, gid_t gid); +int ensure_media_user_dirs(userid_t userid); + +/* commands.c */ + +int install(const char *pkgname, uid_t uid, gid_t gid); +int uninstall(const char *pkgname, uid_t persona); +int renamepkg(const char *oldpkgname, const char *newpkgname); +int fix_uid(const char *pkgname, uid_t uid, gid_t gid); +int delete_user_data(const char *pkgname, uid_t persona); +int make_user_data(const char *pkgname, uid_t uid, uid_t persona); +int delete_persona(uid_t persona); +int clone_persona_data(uid_t src_persona, uid_t target_persona, int copy); +int delete_cache(const char *pkgname, uid_t persona); +int move_dex(const char *src, const char *dst); +int rm_dex(const char *path); +int protect(char *pkgname, gid_t gid); +int get_size(const char *pkgname, int persona, const char *apkpath, const char *fwdlock_apkpath, + const char *asecpath, int64_t *codesize, int64_t *datasize, int64_t *cachesize, + int64_t *asecsize); +int free_cache(int64_t free_size); +int dexopt(const char *apk_path, uid_t uid, int is_public); +int movefiles(); +int linklib(const char* target, const char* source, int userId); diff --git a/cmds/installd/tests/Android.mk b/cmds/installd/tests/Android.mk new file mode 100644 index 0000000..c0192f4 --- /dev/null +++ b/cmds/installd/tests/Android.mk @@ -0,0 +1,31 @@ +# Build the unit tests for installd +LOCAL_PATH := $(call my-dir) +include $(CLEAR_VARS) + +# Build the unit tests. +test_src_files := \ + installd_utils_test.cpp + +shared_libraries := \ + libutils \ + libcutils \ + libstlport + +static_libraries := \ + libinstalld \ + libdiskusage \ + libgtest \ + libgtest_main + +c_includes := \ + frameworks/base/cmds/installd + +$(foreach file,$(test_src_files), \ + $(eval include $(CLEAR_VARS)) \ + $(eval LOCAL_SHARED_LIBRARIES := $(shared_libraries)) \ + $(eval LOCAL_STATIC_LIBRARIES := $(static_libraries)) \ + $(eval LOCAL_SRC_FILES := $(file)) \ + $(eval LOCAL_C_INCLUDES := $(c_includes)) \ + $(eval LOCAL_MODULE := $(notdir $(file:%.cpp=%))) \ + $(eval include $(BUILD_NATIVE_TEST)) \ +) diff --git a/cmds/installd/tests/installd_utils_test.cpp b/cmds/installd/tests/installd_utils_test.cpp new file mode 100644 index 0000000..7cb9b37 --- /dev/null +++ b/cmds/installd/tests/installd_utils_test.cpp @@ -0,0 +1,437 @@ +/* + * Copyright (C) 2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <stdlib.h> +#include <string.h> + +#define LOG_TAG "utils_test" +#include <utils/Log.h> + +#include <gtest/gtest.h> + +extern "C" { +#include "installd.h" +} + +#define TEST_DATA_DIR "/data/" +#define TEST_APP_DIR "/data/app/" +#define TEST_APP_PRIVATE_DIR "/data/app-private/" +#define TEST_ASEC_DIR "/mnt/asec/" + +#define TEST_SYSTEM_DIR1 "/system/app/" +#define TEST_SYSTEM_DIR2 "/vendor/app/" + +#define REALLY_LONG_APP_NAME "com.example." \ + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa." \ + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa." \ + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" + +#define REALLY_LONG_LEAF_NAME "shared_prefs_shared_prefs_shared_prefs_shared_prefs_shared_prefs_" \ + "shared_prefs_shared_prefs_shared_prefs_shared_prefs_shared_prefs_shared_prefs_" \ + "shared_prefs_shared_prefs_shared_prefs_shared_prefs_shared_prefs_shared_prefs_" \ + "shared_prefs_shared_prefs_shared_prefs_shared_prefs_shared_prefs_shared_prefs_" + +namespace android { + +class UtilsTest : public testing::Test { +protected: + virtual void SetUp() { + android_app_dir.path = TEST_APP_DIR; + android_app_dir.len = strlen(TEST_APP_DIR); + + android_app_private_dir.path = TEST_APP_PRIVATE_DIR; + android_app_private_dir.len = strlen(TEST_APP_PRIVATE_DIR); + + android_data_dir.path = TEST_DATA_DIR; + android_data_dir.len = strlen(TEST_DATA_DIR); + + android_asec_dir.path = TEST_ASEC_DIR; + android_asec_dir.len = strlen(TEST_ASEC_DIR); + + android_system_dirs.count = 2; + + android_system_dirs.dirs = (dir_rec_t*) calloc(android_system_dirs.count, sizeof(dir_rec_t)); + android_system_dirs.dirs[0].path = TEST_SYSTEM_DIR1; + android_system_dirs.dirs[0].len = strlen(TEST_SYSTEM_DIR1); + + android_system_dirs.dirs[1].path = TEST_SYSTEM_DIR2; + android_system_dirs.dirs[1].len = strlen(TEST_SYSTEM_DIR2); + } + + virtual void TearDown() { + free(android_system_dirs.dirs); + } +}; + +TEST_F(UtilsTest, IsValidApkPath_BadPrefix) { + // Bad prefixes directories + const char *badprefix1 = "/etc/passwd"; + EXPECT_EQ(-1, validate_apk_path(badprefix1)) + << badprefix1 << " should be allowed as a valid path"; + + const char *badprefix2 = "../.." TEST_APP_DIR "../../../blah"; + EXPECT_EQ(-1, validate_apk_path(badprefix2)) + << badprefix2 << " should be allowed as a valid path"; + + const char *badprefix3 = "init.rc"; + EXPECT_EQ(-1, validate_apk_path(badprefix3)) + << badprefix3 << " should be allowed as a valid path"; + + const char *badprefix4 = "/init.rc"; + EXPECT_EQ(-1, validate_apk_path(badprefix4)) + << badprefix4 << " should be allowed as a valid path"; +} + +TEST_F(UtilsTest, IsValidApkPath_Internal) { + // Internal directories + const char *internal1 = TEST_APP_DIR "example.apk"; + EXPECT_EQ(0, validate_apk_path(internal1)) + << internal1 << " should be allowed as a valid path"; + + const char *badint1 = TEST_APP_DIR "../example.apk"; + EXPECT_EQ(-1, validate_apk_path(badint1)) + << badint1 << " should be rejected as a invalid path"; + + const char *badint2 = TEST_APP_DIR "/../example.apk"; + EXPECT_EQ(-1, validate_apk_path(badint2)) + << badint2 << " should be rejected as a invalid path"; + + const char *badint3 = TEST_APP_DIR "example.com/pkg.apk"; + EXPECT_EQ(-1, validate_apk_path(badint3)) + << badint3 << " should be rejected as a invalid path"; +} + +TEST_F(UtilsTest, IsValidApkPath_Private) { + // Internal directories + const char *private1 = TEST_APP_PRIVATE_DIR "example.apk"; + EXPECT_EQ(0, validate_apk_path(private1)) + << private1 << " should be allowed as a valid path"; + + const char *badpriv1 = TEST_APP_PRIVATE_DIR "../example.apk"; + EXPECT_EQ(-1, validate_apk_path(badpriv1)) + << badpriv1 << " should be rejected as a invalid path"; + + const char *badpriv2 = TEST_APP_PRIVATE_DIR "/../example.apk"; + EXPECT_EQ(-1, validate_apk_path(badpriv2)) + << badpriv2 << " should be rejected as a invalid path"; + + const char *badpriv3 = TEST_APP_PRIVATE_DIR "example.com/pkg.apk"; + EXPECT_EQ(-1, validate_apk_path(badpriv3)) + << badpriv3 << " should be rejected as a invalid path"; +} + + +TEST_F(UtilsTest, IsValidApkPath_AsecGood1) { + const char *asec1 = TEST_ASEC_DIR "example.apk"; + EXPECT_EQ(0, validate_apk_path(asec1)) + << asec1 << " should be allowed as a valid path"; +} + +TEST_F(UtilsTest, IsValidApkPath_AsecGood2) { + const char *asec2 = TEST_ASEC_DIR "com.example.asec/pkg.apk"; + EXPECT_EQ(0, validate_apk_path(asec2)) + << asec2 << " should be allowed as a valid path"; +} + +TEST_F(UtilsTest, IsValidApkPath_EscapeFail) { + const char *badasec1 = TEST_ASEC_DIR "../example.apk"; + EXPECT_EQ(-1, validate_apk_path(badasec1)) + << badasec1 << " should be rejected as a invalid path"; +} + +TEST_F(UtilsTest, IsValidApkPath_DoubleSlashFail) { + const char *badasec2 = TEST_ASEC_DIR "com.example.asec//pkg.apk"; + EXPECT_EQ(-1, validate_apk_path(badasec2)) + << badasec2 << " should be rejected as a invalid path"; +} + +TEST_F(UtilsTest, IsValidApkPath_SubdirEscapeFail) { + const char *badasec3 = TEST_ASEC_DIR "com.example.asec/../../../pkg.apk"; + EXPECT_EQ(-1, validate_apk_path(badasec3)) + << badasec3 << " should be rejected as a invalid path"; +} + +TEST_F(UtilsTest, IsValidApkPath_SlashEscapeFail) { + const char *badasec4 = TEST_ASEC_DIR "/../example.apk"; + EXPECT_EQ(-1, validate_apk_path(badasec4)) + << badasec4 << " should be rejected as a invalid path"; +} + +TEST_F(UtilsTest, IsValidApkPath_CrazyDirFail) { + const char *badasec5 = TEST_ASEC_DIR ".//../.."; + EXPECT_EQ(-1, validate_apk_path(badasec5)) + << badasec5 << " should be rejected as a invalid path"; +} + +TEST_F(UtilsTest, IsValidApkPath_SubdirEscapeSingleFail) { + const char *badasec6 = TEST_ASEC_DIR "com.example.asec/../pkg.apk"; + EXPECT_EQ(-1, validate_apk_path(badasec6)) + << badasec6 << " should be rejected as a invalid path"; +} + +TEST_F(UtilsTest, IsValidApkPath_TwoSubdirFail) { + const char *badasec7 = TEST_ASEC_DIR "com.example.asec/subdir1/pkg.apk"; + EXPECT_EQ(-1, validate_apk_path(badasec7)) + << badasec7 << " should be rejected as a invalid path"; +} + +TEST_F(UtilsTest, CheckSystemApp_Dir1) { + const char *sysapp1 = TEST_SYSTEM_DIR1 "Voice.apk"; + EXPECT_EQ(0, validate_system_app_path(sysapp1)) + << sysapp1 << " should be allowed as a system path"; +} + +TEST_F(UtilsTest, CheckSystemApp_Dir2) { + const char *sysapp2 = TEST_SYSTEM_DIR2 "com.example.myapp.apk"; + EXPECT_EQ(0, validate_system_app_path(sysapp2)) + << sysapp2 << " should be allowed as a system path"; +} + +TEST_F(UtilsTest, CheckSystemApp_EscapeFail) { + const char *badapp1 = TEST_SYSTEM_DIR1 "../com.example.apk"; + EXPECT_EQ(-1, validate_system_app_path(badapp1)) + << badapp1 << " should be rejected not a system path"; +} + +TEST_F(UtilsTest, CheckSystemApp_DoubleEscapeFail) { + const char *badapp2 = TEST_SYSTEM_DIR2 "/../../com.example.apk"; + EXPECT_EQ(-1, validate_system_app_path(badapp2)) + << badapp2 << " should be rejected not a system path"; +} + +TEST_F(UtilsTest, CheckSystemApp_BadPathEscapeFail) { + const char *badapp3 = TEST_APP_DIR "/../../com.example.apk"; + EXPECT_EQ(-1, validate_system_app_path(badapp3)) + << badapp3 << " should be rejected not a system path"; +} + +TEST_F(UtilsTest, GetPathFromString_NullPathFail) { + dir_rec_t test1; + EXPECT_EQ(-1, get_path_from_string(&test1, (const char *) NULL)) + << "Should not allow NULL as a path."; +} + +TEST_F(UtilsTest, GetPathFromString_EmptyPathFail) { + dir_rec_t test1; + EXPECT_EQ(-1, get_path_from_string(&test1, "")) + << "Should not allow empty paths."; +} + +TEST_F(UtilsTest, GetPathFromString_RelativePathFail) { + dir_rec_t test1; + EXPECT_EQ(-1, get_path_from_string(&test1, "mnt/asec")) + << "Should not allow relative paths."; +} + +TEST_F(UtilsTest, GetPathFromString_NonCanonical) { + dir_rec_t test1; + + EXPECT_EQ(0, get_path_from_string(&test1, "/mnt/asec")) + << "Should be able to canonicalize directory /mnt/asec"; + EXPECT_STREQ("/mnt/asec/", test1.path) + << "/mnt/asec should be canonicalized to /mnt/asec/"; + EXPECT_EQ(10, (ssize_t) test1.len) + << "path len should be equal to the length of /mnt/asec/ (10)"; + free(test1.path); +} + +TEST_F(UtilsTest, GetPathFromString_CanonicalPath) { + dir_rec_t test3; + EXPECT_EQ(0, get_path_from_string(&test3, "/data/app/")) + << "Should be able to canonicalize directory /data/app/"; + EXPECT_STREQ("/data/app/", test3.path) + << "/data/app/ should be canonicalized to /data/app/"; + EXPECT_EQ(10, (ssize_t) test3.len) + << "path len should be equal to the length of /data/app/ (10)"; + free(test3.path); +} + +TEST_F(UtilsTest, CreatePkgPath_LongPkgNameSuccess) { + char path[PKG_PATH_MAX]; + + // Create long packagename of "aaaaa..." + size_t pkgnameSize = PKG_NAME_MAX; + char pkgname[pkgnameSize + 1]; + memset(pkgname, 'a', pkgnameSize); + pkgname[pkgnameSize] = '\0'; + + EXPECT_EQ(0, create_pkg_path(path, pkgname, "", 0)) + << "Should successfully be able to create package name."; + + const char *prefix = TEST_DATA_DIR PRIMARY_USER_PREFIX; + size_t offset = strlen(prefix); + EXPECT_STREQ(pkgname, path + offset) + << "Package path should be a really long string of a's"; +} + +TEST_F(UtilsTest, CreatePkgPath_LongPkgNameFail) { + char path[PKG_PATH_MAX]; + + // Create long packagename of "aaaaa..." + size_t pkgnameSize = PKG_NAME_MAX + 1; + char pkgname[pkgnameSize + 1]; + memset(pkgname, 'a', pkgnameSize); + pkgname[pkgnameSize] = '\0'; + + EXPECT_EQ(-1, create_pkg_path(path, pkgname, "", 0)) + << "Should return error because package name is too long."; +} + +TEST_F(UtilsTest, CreatePkgPath_LongPostfixFail) { + char path[PKG_PATH_MAX]; + + // Create long packagename of "aaaaa..." + size_t postfixSize = PKG_PATH_MAX; + char postfix[postfixSize + 1]; + memset(postfix, 'a', postfixSize); + postfix[postfixSize] = '\0'; + + EXPECT_EQ(-1, create_pkg_path(path, "com.example.package", postfix, 0)) + << "Should return error because postfix is too long."; +} + +TEST_F(UtilsTest, CreatePkgPath_PrimaryUser) { + char path[PKG_PATH_MAX]; + + EXPECT_EQ(0, create_pkg_path(path, "com.example.package", "", 0)) + << "Should return error because postfix is too long."; + + EXPECT_STREQ(TEST_DATA_DIR PRIMARY_USER_PREFIX "com.example.package", path) + << "Package path should be in /data/data/"; +} + +TEST_F(UtilsTest, CreatePkgPath_SecondaryUser) { + char path[PKG_PATH_MAX]; + + EXPECT_EQ(0, create_pkg_path(path, "com.example.package", "", 1)) + << "Should successfully create package path."; + + EXPECT_STREQ(TEST_DATA_DIR SECONDARY_USER_PREFIX "1/com.example.package", path) + << "Package path should be in /data/user/"; +} + +TEST_F(UtilsTest, CreatePkgPathInDir_ProtectedDir) { + char path[PKG_PATH_MAX]; + + dir_rec_t dir; + dir.path = "/data/app-private/"; + dir.len = strlen(dir.path); + + EXPECT_EQ(0, create_pkg_path_in_dir(path, &dir, "com.example.package", ".apk")) + << "Should successfully create package path."; + + EXPECT_STREQ("/data/app-private/com.example.package.apk", path) + << "Package path should be in /data/app-private/"; +} + +TEST_F(UtilsTest, CreatePersonaPath_Primary) { + char path[PKG_PATH_MAX]; + + EXPECT_EQ(0, create_persona_path(path, 0)) + << "Should successfully build primary user path."; + + EXPECT_STREQ("/data/data/", path) + << "Primary user should have correct path"; +} + +TEST_F(UtilsTest, CreatePersonaPath_Secondary) { + char path[PKG_PATH_MAX]; + + EXPECT_EQ(0, create_persona_path(path, 1)) + << "Should successfully build primary user path."; + + EXPECT_STREQ("/data/user/1/", path) + << "Primary user should have correct path"; +} + +TEST_F(UtilsTest, CreateMovePath_Primary) { + char path[PKG_PATH_MAX]; + + EXPECT_EQ(0, create_move_path(path, "com.android.test", "shared_prefs", 0)) + << "Should be able to create move path for primary user"; + + EXPECT_STREQ("/data/data/com.android.test/shared_prefs", path) + << "Primary user package directory should be created correctly"; +} + +TEST_F(UtilsTest, CreateMovePath_Fail_AppTooLong) { + char path[PKG_PATH_MAX]; + + EXPECT_EQ(-1, create_move_path(path, REALLY_LONG_APP_NAME, "shared_prefs", 0)) + << "Should fail to create move path for primary user"; +} + +TEST_F(UtilsTest, CreateMovePath_Fail_LeafTooLong) { + char path[PKG_PATH_MAX]; + + EXPECT_EQ(-1, create_move_path(path, "com.android.test", REALLY_LONG_LEAF_NAME, 0)) + << "Should fail to create move path for primary user"; +} + +TEST_F(UtilsTest, CopyAndAppend_Normal) { + //int copy_and_append(dir_rec_t* dst, dir_rec_t* src, char* suffix) + dir_rec_t dst; + dir_rec_t src; + + src.path = "/data/"; + src.len = strlen(src.path); + + EXPECT_EQ(0, copy_and_append(&dst, &src, "app/")) + << "Should return error because postfix is too long."; + + EXPECT_STREQ("/data/app/", dst.path) + << "Appended path should be correct"; + + EXPECT_EQ(10, (ssize_t) dst.len) + << "Appended path should be length of '/data/app/' (10)"; +} + +TEST_F(UtilsTest, AppendAndIncrement_Normal) { + size_t dst_size = 10; + char dst[dst_size]; + char *dstp = dst; + const char* src = "FOO"; + + EXPECT_EQ(0, append_and_increment(&dstp, src, &dst_size)) + << "String should append successfully"; + + EXPECT_STREQ("FOO", dst) + << "String should append correctly"; + + EXPECT_EQ(0, append_and_increment(&dstp, src, &dst_size)) + << "String should append successfully again"; + + EXPECT_STREQ("FOOFOO", dst) + << "String should append correctly again"; +} + +TEST_F(UtilsTest, AppendAndIncrement_TooBig) { + size_t dst_size = 5; + char dst[dst_size]; + char *dstp = dst; + const char* src = "FOO"; + + EXPECT_EQ(0, append_and_increment(&dstp, src, &dst_size)) + << "String should append successfully"; + + EXPECT_STREQ("FOO", dst) + << "String should append correctly"; + + EXPECT_EQ(-1, append_and_increment(&dstp, src, &dst_size)) + << "String should fail because it's too large to fit"; +} + +} diff --git a/cmds/installd/utils.c b/cmds/installd/utils.c new file mode 100644 index 0000000..625a35e --- /dev/null +++ b/cmds/installd/utils.c @@ -0,0 +1,1006 @@ +/* +** Copyright 2008, The Android Open Source Project +** +** Licensed under the Apache License, Version 2.0 (the "License"); +** you may not use this file except in compliance with the License. +** You may obtain a copy of the License at +** +** http://www.apache.org/licenses/LICENSE-2.0 +** +** Unless required by applicable law or agreed to in writing, software +** distributed under the License is distributed on an "AS IS" BASIS, +** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +** See the License for the specific language governing permissions and +** limitations under the License. +*/ + +#include "installd.h" + +#define CACHE_NOISY(x) //x + +int create_pkg_path_in_dir(char path[PKG_PATH_MAX], + const dir_rec_t* dir, + const char* pkgname, + const char* postfix) +{ + const size_t postfix_len = strlen(postfix); + + const size_t pkgname_len = strlen(pkgname); + if (pkgname_len > PKG_NAME_MAX) { + return -1; + } + + if (is_valid_package_name(pkgname) < 0) { + return -1; + } + + if ((pkgname_len + dir->len + postfix_len) >= PKG_PATH_MAX) { + return -1; + } + + char *dst = path; + size_t dst_size = PKG_PATH_MAX; + + if (append_and_increment(&dst, dir->path, &dst_size) < 0 + || append_and_increment(&dst, pkgname, &dst_size) < 0 + || append_and_increment(&dst, postfix, &dst_size) < 0) { + ALOGE("Error building APK path"); + return -1; + } + + return 0; +} + +/** + * Create the package path name for a given package name with a postfix for + * a certain persona. Returns 0 on success, and -1 on failure. + */ +int create_pkg_path(char path[PKG_PATH_MAX], + const char *pkgname, + const char *postfix, + uid_t persona) +{ + size_t uid_len; + char* persona_prefix; + if (persona == 0) { + persona_prefix = PRIMARY_USER_PREFIX; + uid_len = 0; + } else { + persona_prefix = SECONDARY_USER_PREFIX; + uid_len = snprintf(NULL, 0, "%d", persona); + } + + const size_t prefix_len = android_data_dir.len + strlen(persona_prefix) + uid_len + 1 /*slash*/; + char prefix[prefix_len + 1]; + + char *dst = prefix; + size_t dst_size = sizeof(prefix); + + if (append_and_increment(&dst, android_data_dir.path, &dst_size) < 0 + || append_and_increment(&dst, persona_prefix, &dst_size) < 0) { + ALOGE("Error building prefix for APK path"); + return -1; + } + + if (persona != 0) { + int ret = snprintf(dst, dst_size, "%d/", persona); + if (ret < 0 || (size_t) ret != uid_len + 1) { + ALOGW("Error appending UID to APK path"); + return -1; + } + } + + dir_rec_t dir; + dir.path = prefix; + dir.len = prefix_len; + + return create_pkg_path_in_dir(path, &dir, pkgname, postfix); +} + +/** + * Create the path name for user data for a certain persona. + * Returns 0 on success, and -1 on failure. + */ +int create_persona_path(char path[PKG_PATH_MAX], + uid_t persona) +{ + size_t uid_len; + char* persona_prefix; + if (persona == 0) { + persona_prefix = PRIMARY_USER_PREFIX; + uid_len = 0; + } else { + persona_prefix = SECONDARY_USER_PREFIX; + uid_len = snprintf(NULL, 0, "%d/", persona); + } + + char *dst = path; + size_t dst_size = PKG_PATH_MAX; + + if (append_and_increment(&dst, android_data_dir.path, &dst_size) < 0 + || append_and_increment(&dst, persona_prefix, &dst_size) < 0) { + ALOGE("Error building prefix for user path"); + return -1; + } + + if (persona != 0) { + if (dst_size < uid_len + 1) { + ALOGE("Error building user path"); + return -1; + } + int ret = snprintf(dst, dst_size, "%d/", persona); + if (ret < 0 || (size_t) ret != uid_len) { + ALOGE("Error appending persona id to path"); + return -1; + } + } + return 0; +} + +/** + * Create the path name for media for a certain persona. + * Returns 0 on success, and -1 on failure. + */ +int create_persona_media_path(char path[PATH_MAX], userid_t userid) { + if (snprintf(path, PATH_MAX, "%s%d", android_media_dir.path, userid) > PATH_MAX) { + return -1; + } + return 0; +} + +int create_move_path(char path[PKG_PATH_MAX], + const char* pkgname, + const char* leaf, + uid_t persona) +{ + if ((android_data_dir.len + strlen(PRIMARY_USER_PREFIX) + strlen(pkgname) + strlen(leaf) + 1) + >= PKG_PATH_MAX) { + return -1; + } + + sprintf(path, "%s%s%s/%s", android_data_dir.path, PRIMARY_USER_PREFIX, pkgname, leaf); + return 0; +} + +/** + * Checks whether the package name is valid. Returns -1 on error and + * 0 on success. + */ +int is_valid_package_name(const char* pkgname) { + const char *x = pkgname; + int alpha = -1; + + while (*x) { + if (isalnum(*x) || (*x == '_')) { + /* alphanumeric or underscore are fine */ + } else if (*x == '.') { + if ((x == pkgname) || (x[1] == '.') || (x[1] == 0)) { + /* periods must not be first, last, or doubled */ + ALOGE("invalid package name '%s'\n", pkgname); + return -1; + } + } else if (*x == '-') { + /* Suffix -X is fine to let versioning of packages. + But whatever follows should be alphanumeric.*/ + alpha = 1; + } else { + /* anything not A-Z, a-z, 0-9, _, or . is invalid */ + ALOGE("invalid package name '%s'\n", pkgname); + return -1; + } + + x++; + } + + if (alpha == 1) { + // Skip current character + x++; + while (*x) { + if (!isalnum(*x)) { + ALOGE("invalid package name '%s' should include only numbers after -\n", pkgname); + return -1; + } + x++; + } + } + + return 0; +} + +static int _delete_dir_contents(DIR *d, const char *ignore) +{ + int result = 0; + struct dirent *de; + int dfd; + + dfd = dirfd(d); + + if (dfd < 0) return -1; + + while ((de = readdir(d))) { + const char *name = de->d_name; + + /* skip the ignore name if provided */ + if (ignore && !strcmp(name, ignore)) continue; + + if (de->d_type == DT_DIR) { + int r, subfd; + DIR *subdir; + + /* always skip "." and ".." */ + if (name[0] == '.') { + if (name[1] == 0) continue; + if ((name[1] == '.') && (name[2] == 0)) continue; + } + + subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); + if (subfd < 0) { + ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); + result = -1; + continue; + } + subdir = fdopendir(subfd); + if (subdir == NULL) { + ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); + close(subfd); + result = -1; + continue; + } + if (_delete_dir_contents(subdir, 0)) { + result = -1; + } + closedir(subdir); + if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { + ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); + result = -1; + } + } else { + if (unlinkat(dfd, name, 0) < 0) { + ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); + result = -1; + } + } + } + + return result; +} + +int delete_dir_contents(const char *pathname, + int also_delete_dir, + const char *ignore) +{ + int res = 0; + DIR *d; + + d = opendir(pathname); + if (d == NULL) { + ALOGE("Couldn't opendir %s: %s\n", pathname, strerror(errno)); + return -errno; + } + res = _delete_dir_contents(d, ignore); + closedir(d); + if (also_delete_dir) { + if (rmdir(pathname)) { + ALOGE("Couldn't rmdir %s: %s\n", pathname, strerror(errno)); + res = -1; + } + } + return res; +} + +int delete_dir_contents_fd(int dfd, const char *name) +{ + int fd, res; + DIR *d; + + fd = openat(dfd, name, O_RDONLY | O_DIRECTORY); + if (fd < 0) { + ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); + return -1; + } + d = fdopendir(fd); + if (d == NULL) { + ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); + close(fd); + return -1; + } + res = _delete_dir_contents(d, 0); + closedir(d); + return res; +} + +int lookup_media_dir(char basepath[PATH_MAX], const char *dir) +{ + DIR *d; + struct dirent *de; + struct stat s; + char* dirpos = basepath + strlen(basepath); + + if ((*(dirpos-1)) != '/') { + *dirpos = '/'; + dirpos++; + } + + CACHE_NOISY(ALOGI("Looking up %s in %s\n", dir, basepath)); + // Verify the path won't extend beyond our buffer, to avoid + // repeated checking later. + if ((dirpos-basepath+strlen(dir)) >= (PATH_MAX-1)) { + ALOGW("Path exceeds limit: %s%s", basepath, dir); + return -1; + } + + // First, can we find this directory with the case that is given? + strcpy(dirpos, dir); + if (stat(basepath, &s) >= 0) { + CACHE_NOISY(ALOGI("Found direct: %s\n", basepath)); + return 0; + } + + // Not found with that case... search through all entries to find + // one that matches regardless of case. + *dirpos = 0; + + d = opendir(basepath); + if (d == NULL) { + return -1; + } + + while ((de = readdir(d))) { + if (strcasecmp(de->d_name, dir) == 0) { + strcpy(dirpos, de->d_name); + closedir(d); + CACHE_NOISY(ALOGI("Found search: %s\n", basepath)); + return 0; + } + } + + ALOGW("Couldn't find %s in %s", dir, basepath); + closedir(d); + return -1; +} + +int64_t data_disk_free() +{ + struct statfs sfs; + if (statfs(android_data_dir.path, &sfs) == 0) { + return sfs.f_bavail * sfs.f_bsize; + } else { + ALOGE("Couldn't statfs %s: %s\n", android_data_dir.path, strerror(errno)); + return -1; + } +} + +cache_t* start_cache_collection() +{ + cache_t* cache = (cache_t*)calloc(1, sizeof(cache_t)); + return cache; +} + +#define CACHE_BLOCK_SIZE (512*1024) + +static void* _cache_malloc(cache_t* cache, size_t len) +{ + len = (len+3)&~3; + if (len > (CACHE_BLOCK_SIZE/2)) { + // It doesn't make sense to try to put this allocation into one + // of our blocks, because it is so big. Instead, make a new dedicated + // block for it. + int8_t* res = (int8_t*)malloc(len+sizeof(void*)); + if (res == NULL) { + return NULL; + } + CACHE_NOISY(ALOGI("Allocated large cache mem block: %p size %d", res, len)); + // Link it into our list of blocks, not disrupting the current one. + if (cache->memBlocks == NULL) { + *(void**)res = NULL; + cache->memBlocks = res; + } else { + *(void**)res = *(void**)cache->memBlocks; + *(void**)cache->memBlocks = res; + } + return res + sizeof(void*); + } + int8_t* res = cache->curMemBlockAvail; + int8_t* nextPos = res + len; + if (cache->memBlocks == NULL || nextPos > cache->curMemBlockEnd) { + int8_t* newBlock = malloc(CACHE_BLOCK_SIZE); + if (newBlock == NULL) { + return NULL; + } + CACHE_NOISY(ALOGI("Allocated new cache mem block: %p", newBlock)); + *(void**)newBlock = cache->memBlocks; + cache->memBlocks = newBlock; + res = cache->curMemBlockAvail = newBlock + sizeof(void*); + cache->curMemBlockEnd = newBlock + CACHE_BLOCK_SIZE; + nextPos = res + len; + } + CACHE_NOISY(ALOGI("cache_malloc: ret %p size %d, block=%p, nextPos=%p", + res, len, cache->memBlocks, nextPos)); + cache->curMemBlockAvail = nextPos; + return res; +} + +static void* _cache_realloc(cache_t* cache, void* cur, size_t origLen, size_t len) +{ + // This isn't really a realloc, but it is good enough for our purposes here. + void* alloc = _cache_malloc(cache, len); + if (alloc != NULL && cur != NULL) { + memcpy(alloc, cur, origLen < len ? origLen : len); + } + return alloc; +} + +static void _inc_num_cache_collected(cache_t* cache) +{ + cache->numCollected++; + if ((cache->numCollected%20000) == 0) { + ALOGI("Collected cache so far: %d directories, %d files", + cache->numDirs, cache->numFiles); + } +} + +static cache_dir_t* _add_cache_dir_t(cache_t* cache, cache_dir_t* parent, const char *name) +{ + size_t nameLen = strlen(name); + cache_dir_t* dir = (cache_dir_t*)_cache_malloc(cache, sizeof(cache_dir_t)+nameLen+1); + if (dir != NULL) { + dir->parent = parent; + dir->childCount = 0; + dir->hiddenCount = 0; + dir->deleted = 0; + strcpy(dir->name, name); + if (cache->numDirs >= cache->availDirs) { + size_t newAvail = cache->availDirs < 1000 ? 1000 : cache->availDirs*2; + cache_dir_t** newDirs = (cache_dir_t**)_cache_realloc(cache, cache->dirs, + cache->availDirs*sizeof(cache_dir_t*), newAvail*sizeof(cache_dir_t*)); + if (newDirs == NULL) { + ALOGE("Failure growing cache dirs array for %s\n", name); + return NULL; + } + cache->availDirs = newAvail; + cache->dirs = newDirs; + } + cache->dirs[cache->numDirs] = dir; + cache->numDirs++; + if (parent != NULL) { + parent->childCount++; + } + _inc_num_cache_collected(cache); + } else { + ALOGE("Failure allocating cache_dir_t for %s\n", name); + } + return dir; +} + +static cache_file_t* _add_cache_file_t(cache_t* cache, cache_dir_t* dir, time_t modTime, + const char *name) +{ + size_t nameLen = strlen(name); + cache_file_t* file = (cache_file_t*)_cache_malloc(cache, sizeof(cache_file_t)+nameLen+1); + if (file != NULL) { + file->dir = dir; + file->modTime = modTime; + strcpy(file->name, name); + if (cache->numFiles >= cache->availFiles) { + size_t newAvail = cache->availFiles < 1000 ? 1000 : cache->availFiles*2; + cache_file_t** newFiles = (cache_file_t**)_cache_realloc(cache, cache->files, + cache->availFiles*sizeof(cache_file_t*), newAvail*sizeof(cache_file_t*)); + if (newFiles == NULL) { + ALOGE("Failure growing cache file array for %s\n", name); + return NULL; + } + cache->availFiles = newAvail; + cache->files = newFiles; + } + CACHE_NOISY(ALOGI("Setting file %p at position %d in array %p", file, + cache->numFiles, cache->files)); + cache->files[cache->numFiles] = file; + cache->numFiles++; + dir->childCount++; + _inc_num_cache_collected(cache); + } else { + ALOGE("Failure allocating cache_file_t for %s\n", name); + } + return file; +} + +static int _add_cache_files(cache_t *cache, cache_dir_t *parentDir, const char *dirName, + DIR* dir, char *pathBase, char *pathPos, size_t pathAvailLen) +{ + struct dirent *de; + cache_dir_t* cacheDir = NULL; + int dfd; + + CACHE_NOISY(ALOGI("_add_cache_files: parent=%p dirName=%s dir=%p pathBase=%s", + parentDir, dirName, dir, pathBase)); + + dfd = dirfd(dir); + + if (dfd < 0) return 0; + + // Sub-directories always get added to the data structure, so if they + // are empty we will know about them to delete them later. + cacheDir = _add_cache_dir_t(cache, parentDir, dirName); + + while ((de = readdir(dir))) { + const char *name = de->d_name; + + if (de->d_type == DT_DIR) { + int subfd; + DIR *subdir; + + /* always skip "." and ".." */ + if (name[0] == '.') { + if (name[1] == 0) continue; + if ((name[1] == '.') && (name[2] == 0)) continue; + } + + subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); + if (subfd < 0) { + ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); + continue; + } + subdir = fdopendir(subfd); + if (subdir == NULL) { + ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); + close(subfd); + continue; + } + if (cacheDir == NULL) { + cacheDir = _add_cache_dir_t(cache, parentDir, dirName); + } + if (cacheDir != NULL) { + // Update pathBase for the new path... this may change dirName + // if that is also pointing to the path, but we are done with it + // now. + size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); + CACHE_NOISY(ALOGI("Collecting dir %s\n", pathBase)); + if (finallen < pathAvailLen) { + _add_cache_files(cache, cacheDir, name, subdir, pathBase, + pathPos+finallen, pathAvailLen-finallen); + } else { + // Whoops, the final path is too long! We'll just delete + // this directory. + ALOGW("Cache dir %s truncated in path %s; deleting dir\n", + name, pathBase); + _delete_dir_contents(subdir, NULL); + if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { + ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); + } + } + } + closedir(subdir); + } else if (de->d_type == DT_REG) { + // Skip files that start with '.'; they will be deleted if + // their entire directory is deleted. This allows for metadata + // like ".nomedia" to remain in the directory until the entire + // directory is deleted. + if (cacheDir == NULL) { + cacheDir = _add_cache_dir_t(cache, parentDir, dirName); + } + if (name[0] == '.') { + cacheDir->hiddenCount++; + continue; + } + if (cacheDir != NULL) { + // Build final full path for file... this may change dirName + // if that is also pointing to the path, but we are done with it + // now. + size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); + CACHE_NOISY(ALOGI("Collecting file %s\n", pathBase)); + if (finallen < pathAvailLen) { + struct stat s; + if (stat(pathBase, &s) >= 0) { + _add_cache_file_t(cache, cacheDir, s.st_mtime, name); + } else { + ALOGW("Unable to stat cache file %s; deleting\n", pathBase); + if (unlink(pathBase) < 0) { + ALOGE("Couldn't unlink %s: %s\n", pathBase, strerror(errno)); + } + } + } else { + // Whoops, the final path is too long! We'll just delete + // this file. + ALOGW("Cache file %s truncated in path %s; deleting\n", + name, pathBase); + if (unlinkat(dfd, name, 0) < 0) { + *pathPos = 0; + ALOGE("Couldn't unlinkat %s in %s: %s\n", name, pathBase, + strerror(errno)); + } + } + } + } else { + cacheDir->hiddenCount++; + } + } + return 0; +} + +void add_cache_files(cache_t* cache, const char *basepath, const char *cachedir) +{ + DIR *d; + struct dirent *de; + char dirname[PATH_MAX]; + + CACHE_NOISY(ALOGI("add_cache_files: base=%s cachedir=%s\n", basepath, cachedir)); + + d = opendir(basepath); + if (d == NULL) { + return; + } + + while ((de = readdir(d))) { + if (de->d_type == DT_DIR) { + DIR* subdir; + const char *name = de->d_name; + char* pathpos; + + /* always skip "." and ".." */ + if (name[0] == '.') { + if (name[1] == 0) continue; + if ((name[1] == '.') && (name[2] == 0)) continue; + } + + strcpy(dirname, basepath); + pathpos = dirname + strlen(dirname); + if ((*(pathpos-1)) != '/') { + *pathpos = '/'; + pathpos++; + *pathpos = 0; + } + if (cachedir != NULL) { + snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s/%s", name, cachedir); + } else { + snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s", name); + } + CACHE_NOISY(ALOGI("Adding cache files from dir: %s\n", dirname)); + subdir = opendir(dirname); + if (subdir != NULL) { + size_t dirnameLen = strlen(dirname); + _add_cache_files(cache, NULL, dirname, subdir, dirname, dirname+dirnameLen, + PATH_MAX - dirnameLen); + closedir(subdir); + } + } + } + + closedir(d); +} + +static char *create_dir_path(char path[PATH_MAX], cache_dir_t* dir) +{ + char *pos = path; + if (dir->parent != NULL) { + pos = create_dir_path(path, dir->parent); + } + // Note that we don't need to worry about going beyond the buffer, + // since when we were constructing the cache entries our maximum + // buffer size for full paths was PATH_MAX. + strcpy(pos, dir->name); + pos += strlen(pos); + *pos = '/'; + pos++; + *pos = 0; + return pos; +} + +static void delete_cache_dir(char path[PATH_MAX], cache_dir_t* dir) +{ + if (dir->parent != NULL) { + create_dir_path(path, dir); + ALOGI("DEL DIR %s\n", path); + if (dir->hiddenCount <= 0) { + if (rmdir(path)) { + ALOGE("Couldn't rmdir %s: %s\n", path, strerror(errno)); + return; + } + } else { + // The directory contains hidden files so we need to delete + // them along with the directory itself. + if (delete_dir_contents(path, 1, NULL)) { + return; + } + } + dir->parent->childCount--; + dir->deleted = 1; + if (dir->parent->childCount <= 0) { + delete_cache_dir(path, dir->parent); + } + } else if (dir->hiddenCount > 0) { + // This is a root directory, but it has hidden files. Get rid of + // all of those files, but not the directory itself. + create_dir_path(path, dir); + ALOGI("DEL CONTENTS %s\n", path); + delete_dir_contents(path, 0, NULL); + } +} + +static int cache_modtime_sort(const void *lhsP, const void *rhsP) +{ + const cache_file_t *lhs = *(const cache_file_t**)lhsP; + const cache_file_t *rhs = *(const cache_file_t**)rhsP; + return lhs->modTime < rhs->modTime ? -1 : (lhs->modTime > rhs->modTime ? 1 : 0); +} + +void clear_cache_files(cache_t* cache, int64_t free_size) +{ + size_t i; + int skip = 0; + char path[PATH_MAX]; + + ALOGI("Collected cache files: %d directories, %d files", + cache->numDirs, cache->numFiles); + + CACHE_NOISY(ALOGI("Sorting files...")); + qsort(cache->files, cache->numFiles, sizeof(cache_file_t*), + cache_modtime_sort); + + CACHE_NOISY(ALOGI("Cleaning empty directories...")); + for (i=cache->numDirs; i>0; i--) { + cache_dir_t* dir = cache->dirs[i-1]; + if (dir->childCount <= 0 && !dir->deleted) { + delete_cache_dir(path, dir); + } + } + + CACHE_NOISY(ALOGI("Trimming files...")); + for (i=0; i<cache->numFiles; i++) { + skip++; + if (skip > 10) { + if (data_disk_free() > free_size) { + return; + } + skip = 0; + } + cache_file_t* file = cache->files[i]; + strcpy(create_dir_path(path, file->dir), file->name); + ALOGI("DEL (mod %d) %s\n", (int)file->modTime, path); + if (unlink(path) < 0) { + ALOGE("Couldn't unlink %s: %s\n", path, strerror(errno)); + } + file->dir->childCount--; + if (file->dir->childCount <= 0) { + delete_cache_dir(path, file->dir); + } + } +} + +void finish_cache_collection(cache_t* cache) +{ + size_t i; + + CACHE_NOISY(ALOGI("clear_cache_files: %d dirs, %d files\n", cache->numDirs, cache->numFiles)); + CACHE_NOISY( + for (i=0; i<cache->numDirs; i++) { + cache_dir_t* dir = cache->dirs[i]; + ALOGI("dir #%d: %p %s parent=%p\n", i, dir, dir->name, dir->parent); + }) + CACHE_NOISY( + for (i=0; i<cache->numFiles; i++) { + cache_file_t* file = cache->files[i]; + ALOGI("file #%d: %p %s time=%d dir=%p\n", i, file, file->name, + (int)file->modTime, file->dir); + }) + void* block = cache->memBlocks; + while (block != NULL) { + void* nextBlock = *(void**)block; + CACHE_NOISY(ALOGI("Freeing cache mem block: %p", block)); + free(block); + block = nextBlock; + } + free(cache); +} + +/** + * Checks whether a path points to a system app (.apk file). Returns 0 + * if it is a system app or -1 if it is not. + */ +int validate_system_app_path(const char* path) { + size_t i; + + for (i = 0; i < android_system_dirs.count; i++) { + const size_t dir_len = android_system_dirs.dirs[i].len; + if (!strncmp(path, android_system_dirs.dirs[i].path, dir_len)) { + if (path[dir_len] == '.' || strchr(path + dir_len, '/') != NULL) { + ALOGE("invalid system apk path '%s' (trickery)\n", path); + return -1; + } + return 0; + } + } + + return -1; +} + +/** + * Get the contents of a environment variable that contains a path. Caller + * owns the string that is inserted into the directory record. Returns + * 0 on success and -1 on error. + */ +int get_path_from_env(dir_rec_t* rec, const char* var) { + const char* path = getenv(var); + int ret = get_path_from_string(rec, path); + if (ret < 0) { + ALOGW("Problem finding value for environment variable %s\n", var); + } + return ret; +} + +/** + * Puts the string into the record as a directory. Appends '/' to the end + * of all paths. Caller owns the string that is inserted into the directory + * record. A null value will result in an error. + * + * Returns 0 on success and -1 on error. + */ +int get_path_from_string(dir_rec_t* rec, const char* path) { + if (path == NULL) { + return -1; + } else { + const size_t path_len = strlen(path); + if (path_len <= 0) { + return -1; + } + + // Make sure path is absolute. + if (path[0] != '/') { + return -1; + } + + if (path[path_len - 1] == '/') { + // Path ends with a forward slash. Make our own copy. + + rec->path = strdup(path); + if (rec->path == NULL) { + return -1; + } + + rec->len = path_len; + } else { + // Path does not end with a slash. Generate a new string. + char *dst; + + // Add space for slash and terminating null. + size_t dst_size = path_len + 2; + + rec->path = malloc(dst_size); + if (rec->path == NULL) { + return -1; + } + + dst = rec->path; + + if (append_and_increment(&dst, path, &dst_size) < 0 + || append_and_increment(&dst, "/", &dst_size)) { + ALOGE("Error canonicalizing path"); + return -1; + } + + rec->len = dst - rec->path; + } + } + return 0; +} + +int copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix) { + dst->len = src->len + strlen(suffix); + const size_t dstSize = dst->len + 1; + dst->path = (char*) malloc(dstSize); + + if (dst->path == NULL + || snprintf(dst->path, dstSize, "%s%s", src->path, suffix) + != (ssize_t) dst->len) { + ALOGE("Could not allocate memory to hold appended path; aborting\n"); + return -1; + } + + return 0; +} + +/** + * Check whether path points to a valid path for an APK file. An ASEC + * directory is allowed to have one level of subdirectory names. Returns -1 + * when an invalid path is encountered and 0 when a valid path is encountered. + */ +int validate_apk_path(const char *path) +{ + int allowsubdir = 0; + char *subdir = NULL; + size_t dir_len; + size_t path_len; + + if (!strncmp(path, android_app_dir.path, android_app_dir.len)) { + dir_len = android_app_dir.len; + } else if (!strncmp(path, android_app_private_dir.path, android_app_private_dir.len)) { + dir_len = android_app_private_dir.len; + } else if (!strncmp(path, android_asec_dir.path, android_asec_dir.len)) { + dir_len = android_asec_dir.len; + allowsubdir = 1; + } else { + ALOGE("invalid apk path '%s' (bad prefix)\n", path); + return -1; + } + + path_len = strlen(path); + + /* + * Only allow the path to have a subdirectory if it's been marked as being allowed. + */ + if ((subdir = strchr(path + dir_len, '/')) != NULL) { + ++subdir; + if (!allowsubdir + || (path_len > (size_t) (subdir - path) && (strchr(subdir, '/') != NULL))) { + ALOGE("invalid apk path '%s' (subdir?)\n", path); + return -1; + } + } + + /* + * Directories can't have a period directly after the directory markers + * to prevent ".." + */ + if (path[dir_len] == '.' + || (subdir != NULL && ((*subdir == '.') || (strchr(subdir, '/') != NULL)))) { + ALOGE("invalid apk path '%s' (trickery)\n", path); + return -1; + } + + return 0; +} + +int append_and_increment(char** dst, const char* src, size_t* dst_size) { + ssize_t ret = strlcpy(*dst, src, *dst_size); + if (ret < 0 || (size_t) ret >= *dst_size) { + return -1; + } + *dst += ret; + *dst_size -= ret; + return 0; +} + +char *build_string2(char *s1, char *s2) { + if (s1 == NULL || s2 == NULL) return NULL; + + int len_s1 = strlen(s1); + int len_s2 = strlen(s2); + int len = len_s1 + len_s2 + 1; + char *result = malloc(len); + if (result == NULL) return NULL; + + strcpy(result, s1); + strcpy(result + len_s1, s2); + + return result; +} + +char *build_string3(char *s1, char *s2, char *s3) { + if (s1 == NULL || s2 == NULL || s3 == NULL) return NULL; + + int len_s1 = strlen(s1); + int len_s2 = strlen(s2); + int len_s3 = strlen(s3); + int len = len_s1 + len_s2 + len_s3 + 1; + char *result = malloc(len); + if (result == NULL) return NULL; + + strcpy(result, s1); + strcpy(result + len_s1, s2); + strcpy(result + len_s1 + len_s2, s3); + + return result; +} + +/* Ensure that /data/media directories are prepared for given user. */ +int ensure_media_user_dirs(userid_t userid) { + char media_user_path[PATH_MAX]; + char path[PATH_MAX]; + + // Ensure /data/media/<userid> exists + create_persona_media_path(media_user_path, userid); + if (fs_prepare_dir(media_user_path, 0770, AID_MEDIA_RW, AID_MEDIA_RW) == -1) { + return -1; + } + + return 0; +} diff --git a/cmds/ip-up-vpn/Android.mk b/cmds/ip-up-vpn/Android.mk new file mode 100644 index 0000000..de81889 --- /dev/null +++ b/cmds/ip-up-vpn/Android.mk @@ -0,0 +1,26 @@ +# +# Copyright (C) 2011 The Android Open Source Project +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +LOCAL_PATH := $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES := ip-up-vpn.c +LOCAL_SHARED_LIBRARIES := libcutils +LOCAL_MODULE := ip-up-vpn +LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/ppp +LOCAL_MODULE_TAGS := optional + +include $(BUILD_EXECUTABLE) diff --git a/cmds/ip-up-vpn/ip-up-vpn.c b/cmds/ip-up-vpn/ip-up-vpn.c new file mode 100644 index 0000000..9fcc950 --- /dev/null +++ b/cmds/ip-up-vpn/ip-up-vpn.c @@ -0,0 +1,153 @@ +/* + * Copyright (C) 2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> + +#include <arpa/inet.h> +#include <netinet/in.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <linux/if.h> +#include <linux/route.h> + +#define LOG_TAG "ip-up-vpn" +#include <cutils/log.h> + +#define DIR "/data/misc/vpn/" + +static const char *env(const char *name) { + const char *value = getenv(name); + return value ? value : ""; +} + +static int set_address(struct sockaddr *sa, const char *address) { + sa->sa_family = AF_INET; + errno = EINVAL; + return inet_pton(AF_INET, address, &((struct sockaddr_in *)sa)->sin_addr); +} + +/* + * The primary goal is to create a file with VPN parameters. Currently they + * are interface, addresses, routes, DNS servers, and search domains. Each + * parameter occupies one line in the file, and it can be an empty string or + * space-separated values. The order and the format must be consistent with + * com.android.server.connectivity.Vpn. Here is an example. + * + * ppp0 + * 192.168.1.100/24 + * 0.0.0.0/0 + * 192.168.1.1 192.168.1.2 + * example.org + * + * The secondary goal is to unify the outcome of VPN. The current baseline + * is to have an interface configured with the given address and netmask + * and maybe add a host route to protect the tunnel. PPP-based VPN already + * does this, but others might not. Routes, DNS servers, and search domains + * are handled by the framework since they can be overridden by the users. + */ +int main(int argc, char **argv) +{ + FILE *state = fopen(DIR ".tmp", "wb"); + if (!state) { + ALOGE("Cannot create state: %s", strerror(errno)); + return 1; + } + + if (argc >= 6) { + /* Invoked by pppd. */ + fprintf(state, "%s\n", argv[1]); + fprintf(state, "%s/32\n", argv[4]); + fprintf(state, "0.0.0.0/0\n"); + fprintf(state, "%s %s\n", env("DNS1"), env("DNS2")); + fprintf(state, "\n"); + } else if (argc == 2) { + /* Invoked by racoon. */ + const char *interface = env("INTERFACE"); + const char *address = env("INTERNAL_ADDR4"); + const char *routes = env("SPLIT_INCLUDE_CIDR"); + + int s = socket(AF_INET, SOCK_DGRAM, 0); + struct rtentry rt; + struct ifreq ifr; + + memset(&rt, 0, sizeof(rt)); + memset(&ifr, 0, sizeof(ifr)); + + /* Remove the old host route. There could be more than one. */ + rt.rt_flags |= RTF_UP | RTF_HOST; + if (set_address(&rt.rt_dst, env("REMOTE_ADDR"))) { + while (!ioctl(s, SIOCDELRT, &rt)); + } + if (errno != ESRCH) { + ALOGE("Cannot remove host route: %s", strerror(errno)); + return 1; + } + + /* Create a new host route. */ + rt.rt_flags |= RTF_GATEWAY; + if (!set_address(&rt.rt_gateway, argv[1]) || + (ioctl(s, SIOCADDRT, &rt) && errno != EEXIST)) { + ALOGE("Cannot create host route: %s", strerror(errno)); + return 1; + } + + /* Bring up the interface. */ + ifr.ifr_flags = IFF_UP; + strncpy(ifr.ifr_name, interface, IFNAMSIZ); + if (ioctl(s, SIOCSIFFLAGS, &ifr)) { + ALOGE("Cannot bring up %s: %s", interface, strerror(errno)); + return 1; + } + + /* Set the address. */ + if (!set_address(&ifr.ifr_addr, address) || + ioctl(s, SIOCSIFADDR, &ifr)) { + ALOGE("Cannot set address: %s", strerror(errno)); + return 1; + } + + /* Set the netmask. */ + if (set_address(&ifr.ifr_netmask, env("INTERNAL_NETMASK4"))) { + if (ioctl(s, SIOCSIFNETMASK, &ifr)) { + ALOGE("Cannot set netmask: %s", strerror(errno)); + return 1; + } + } + + /* TODO: Send few packets to trigger phase 2? */ + + fprintf(state, "%s\n", interface); + fprintf(state, "%s/%s\n", address, env("INTERNAL_CIDR4")); + fprintf(state, "%s\n", routes[0] ? routes : "0.0.0.0/0"); + fprintf(state, "%s\n", env("INTERNAL_DNS4_LIST")); + fprintf(state, "%s\n", env("DEFAULT_DOMAIN")); + } else { + ALOGE("Cannot parse parameters"); + return 1; + } + + fclose(state); + if (chmod(DIR ".tmp", 0444) || rename(DIR ".tmp", DIR "state")) { + ALOGE("Cannot write state: %s", strerror(errno)); + return 1; + } + return 0; +} diff --git a/cmds/rawbu/Android.mk b/cmds/rawbu/Android.mk new file mode 100644 index 0000000..b580390 --- /dev/null +++ b/cmds/rawbu/Android.mk @@ -0,0 +1,15 @@ +# Copyright 2009 The Android Open Source Project + +LOCAL_PATH:= $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES:= backup.cpp + +LOCAL_SHARED_LIBRARIES := libcutils libc + +LOCAL_MODULE:= rawbu + +LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES) +LOCAL_MODULE_TAGS := debug + +include $(BUILD_EXECUTABLE) diff --git a/cmds/rawbu/NOTICE b/cmds/rawbu/NOTICE new file mode 100644 index 0000000..c5b1efa --- /dev/null +++ b/cmds/rawbu/NOTICE @@ -0,0 +1,190 @@ + + Copyright (c) 2005-2008, The Android Open Source Project + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + diff --git a/cmds/rawbu/backup.cpp b/cmds/rawbu/backup.cpp new file mode 100644 index 0000000..70e7b57 --- /dev/null +++ b/cmds/rawbu/backup.cpp @@ -0,0 +1,746 @@ +// Copyright 2009 The Android Open Source Project + +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> +#include <unistd.h> +#include <fcntl.h> +#include <time.h> +#include <dirent.h> +#include <errno.h> +#include <assert.h> +#include <ctype.h> +#include <utime.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <stdint.h> + +#include <cutils/properties.h> + +#include <private/android_filesystem_config.h> + +#ifndef PATH_MAX +#define PATH_MAX 4096 +#endif + +// First version. +#define FILE_VERSION_1 0xffff0001 + +// Introduces backup all option to header. +#define FILE_VERSION_2 0xffff0002 + +#define FILE_VERSION FILE_VERSION_2 + +namespace android { + +static char nameBuffer[PATH_MAX]; +static struct stat statBuffer; + +static char copyBuffer[8192]; +static char *backupFilePath = NULL; + +static uint32_t inputFileVersion; + +static int opt_backupAll; + +#define SPECIAL_NO_TOUCH 0 +#define SPECIAL_NO_BACKUP 1 + +struct special_dir { + const char* path; + int type; +}; + +/* Directory paths that we will not backup/restore */ +static const struct special_dir SKIP_PATHS[] = { + { "/data/misc", SPECIAL_NO_TOUCH }, + { "/data/system/batterystats.bin", SPECIAL_NO_TOUCH }, + { "/data/system/location", SPECIAL_NO_TOUCH }, + { "/data/dalvik-cache", SPECIAL_NO_BACKUP }, + { NULL, 0 }, +}; + +/* This is just copied from the shell's built-in wipe command. */ +static int wipe (const char *path) +{ + DIR *dir; + struct dirent *de; + int ret; + int i; + + dir = opendir(path); + + if (dir == NULL) { + fprintf (stderr, "Error opendir'ing %s: %s\n", + path, strerror(errno)); + return 0; + } + + char *filenameOffset; + + strcpy(nameBuffer, path); + strcat(nameBuffer, "/"); + + filenameOffset = nameBuffer + strlen(nameBuffer); + + for (;;) { + de = readdir(dir); + + if (de == NULL) { + break; + } + + if (0 == strcmp(de->d_name, ".") + || 0 == strcmp(de->d_name, "..") + || 0 == strcmp(de->d_name, "lost+found") + ) { + continue; + } + + strcpy(filenameOffset, de->d_name); + bool noBackup = false; + + /* See if this is a path we should skip. */ + for (i = 0; SKIP_PATHS[i].path; i++) { + if (strcmp(SKIP_PATHS[i].path, nameBuffer) == 0) { + if (opt_backupAll || SKIP_PATHS[i].type == SPECIAL_NO_BACKUP) { + // In this case we didn't back up the directory -- + // we do want to wipe its contents, but not the + // directory itself, since the restore file won't + // contain the directory. + noBackup = true; + } + break; + } + } + + if (!noBackup && SKIP_PATHS[i].path != NULL) { + // This is a SPECIAL_NO_TOUCH directory. + continue; + } + + ret = lstat (nameBuffer, &statBuffer); + + if (ret != 0) { + fprintf(stderr, "warning -- stat() error on '%s': %s\n", + nameBuffer, strerror(errno)); + continue; + } + + if(S_ISDIR(statBuffer.st_mode)) { + int i; + char *newpath; + + newpath = strdup(nameBuffer); + if (wipe(newpath) == 0) { + free(newpath); + closedir(dir); + return 0; + } + + if (!noBackup) { + ret = rmdir(newpath); + if (ret != 0) { + fprintf(stderr, "warning -- rmdir() error on '%s': %s\n", + newpath, strerror(errno)); + } + } + + free(newpath); + + strcpy(nameBuffer, path); + strcat(nameBuffer, "/"); + + } else { + // Don't delete the backup file + if (backupFilePath && strcmp(backupFilePath, nameBuffer) == 0) { + continue; + } + ret = unlink(nameBuffer); + + if (ret != 0) { + fprintf(stderr, "warning -- unlink() error on '%s': %s\n", + nameBuffer, strerror(errno)); + } + } + } + + closedir(dir); + + return 1; +} + +static int write_int32(FILE* fh, int32_t val) +{ + int res = fwrite(&val, 1, sizeof(val), fh); + if (res != sizeof(val)) { + fprintf(stderr, "unable to write int32 (%d bytes): %s\n", res, strerror(errno)); + return 0; + } + + return 1; +} + +static int write_int64(FILE* fh, int64_t val) +{ + int res = fwrite(&val, 1, sizeof(val), fh); + if (res != sizeof(val)) { + fprintf(stderr, "unable to write int64 (%d bytes): %s\n", res, strerror(errno)); + return 0; + } + + return 1; +} + +static int copy_file(FILE* dest, FILE* src, off_t size, const char* destName, + const char* srcName) +{ + errno = 0; + + off_t origSize = size; + + while (size > 0) { + int amt = size > (off_t)sizeof(copyBuffer) ? sizeof(copyBuffer) : (int)size; + int readLen = fread(copyBuffer, 1, amt, src); + if (readLen <= 0) { + if (srcName != NULL) { + fprintf(stderr, "unable to read source (%d of %ld bytes) file '%s': %s\n", + amt, origSize, srcName, errno != 0 ? strerror(errno) : "unexpected EOF"); + } else { + fprintf(stderr, "unable to read buffer (%d of %ld bytes): %s\n", + amt, origSize, errno != 0 ? strerror(errno) : "unexpected EOF"); + } + return 0; + } + int writeLen = fwrite(copyBuffer, 1, readLen, dest); + if (writeLen != readLen) { + if (destName != NULL) { + fprintf(stderr, "unable to write file (%d of %d bytes) '%s': '%s'\n", + writeLen, readLen, destName, strerror(errno)); + } else { + fprintf(stderr, "unable to write buffer (%d of %d bytes): '%s'\n", + writeLen, readLen, strerror(errno)); + } + return 0; + } + size -= readLen; + } + return 1; +} + +#define TYPE_END 0 +#define TYPE_DIR 1 +#define TYPE_FILE 2 + +static int write_header(FILE* fh, int type, const char* path, const struct stat* st) +{ + int pathLen = strlen(path); + if (!write_int32(fh, type)) return 0; + if (!write_int32(fh, pathLen)) return 0; + if (fwrite(path, 1, pathLen, fh) != (size_t)pathLen) { + fprintf(stderr, "unable to write: %s\n", strerror(errno)); + return 0; + } + + if (!write_int32(fh, st->st_uid)) return 0; + if (!write_int32(fh, st->st_gid)) return 0; + if (!write_int32(fh, st->st_mode)) return 0; + if (!write_int64(fh, ((int64_t)st->st_atime)*1000*1000*1000)) return 0; + if (!write_int64(fh, ((int64_t)st->st_mtime)*1000*1000*1000)) return 0; + if (!write_int64(fh, ((int64_t)st->st_ctime)*1000*1000*1000)) return 0; + + return 1; +} + +static int backup_dir(FILE* fh, const char* srcPath) +{ + DIR *dir; + struct dirent *de; + char* fullPath = NULL; + int srcLen = strlen(srcPath); + int result = 1; + int i; + + dir = opendir(srcPath); + + if (dir == NULL) { + fprintf (stderr, "error opendir'ing '%s': %s\n", + srcPath, strerror(errno)); + return 0; + } + + for (;;) { + de = readdir(dir); + + if (de == NULL) { + break; + } + + if (0 == strcmp(de->d_name, ".") + || 0 == strcmp(de->d_name, "..") + || 0 == strcmp(de->d_name, "lost+found") + ) { + continue; + } + + if (fullPath != NULL) { + free(fullPath); + } + fullPath = (char*)malloc(srcLen + strlen(de->d_name) + 2); + strcpy(fullPath, srcPath); + fullPath[srcLen] = '/'; + strcpy(fullPath+srcLen+1, de->d_name); + + /* See if this is a path we should skip. */ + if (!opt_backupAll) { + for (i = 0; SKIP_PATHS[i].path; i++) { + if (strcmp(SKIP_PATHS[i].path, fullPath) == 0) { + break; + } + } + if (SKIP_PATHS[i].path != NULL) { + continue; + } + } + + int ret = lstat(fullPath, &statBuffer); + + if (ret != 0) { + fprintf(stderr, "stat() error on '%s': %s\n", + fullPath, strerror(errno)); + result = 0; + goto done; + } + + if(S_ISDIR(statBuffer.st_mode)) { + printf("Saving dir %s...\n", fullPath); + + if (write_header(fh, TYPE_DIR, fullPath, &statBuffer) == 0) { + result = 0; + goto done; + } + if (backup_dir(fh, fullPath) == 0) { + result = 0; + goto done; + } + } else if (S_ISREG(statBuffer.st_mode)) { + // Skip the backup file + if (backupFilePath && strcmp(fullPath, backupFilePath) == 0) { + printf("Skipping backup file %s...\n", backupFilePath); + continue; + } else { + printf("Saving file %s...\n", fullPath); + } + if (write_header(fh, TYPE_FILE, fullPath, &statBuffer) == 0) { + result = 0; + goto done; + } + + off_t size = statBuffer.st_size; + if (!write_int64(fh, size)) { + result = 0; + goto done; + } + + FILE* src = fopen(fullPath, "r"); + if (src == NULL) { + fprintf(stderr, "unable to open source file '%s': %s\n", + fullPath, strerror(errno)); + result = 0; + goto done; + } + + int copyres = copy_file(fh, src, size, NULL, fullPath); + fclose(src); + if (!copyres) { + result = 0; + goto done; + } + } + } + +done: + if (fullPath != NULL) { + free(fullPath); + } + + closedir(dir); + + return result; +} + +static int backup_data(const char* destPath) +{ + int res = -1; + + FILE* fh = fopen(destPath, "w"); + if (fh == NULL) { + fprintf(stderr, "unable to open destination '%s': %s\n", + destPath, strerror(errno)); + return -1; + } + + printf("Backing up /data to %s...\n", destPath); + + // The path that shouldn't be backed up + backupFilePath = strdup(destPath); + + if (!write_int32(fh, FILE_VERSION)) goto done; + if (!write_int32(fh, opt_backupAll)) goto done; + if (!backup_dir(fh, "/data")) goto done; + if (!write_int32(fh, 0)) goto done; + + res = 0; + +done: + if (fflush(fh) != 0) { + fprintf(stderr, "error flushing destination '%s': %s\n", + destPath, strerror(errno)); + res = -1; + goto donedone; + } + if (fsync(fileno(fh)) != 0) { + fprintf(stderr, "error syncing destination '%s': %s\n", + destPath, strerror(errno)); + res = -1; + goto donedone; + } + fclose(fh); + sync(); + +donedone: + return res; +} + +static int32_t read_int32(FILE* fh, int32_t defVal) +{ + int32_t val; + if (fread(&val, 1, sizeof(val), fh) != sizeof(val)) { + fprintf(stderr, "unable to read: %s\n", strerror(errno)); + return defVal; + } + + return val; +} + +static int64_t read_int64(FILE* fh, int64_t defVal) +{ + int64_t val; + if (fread(&val, 1, sizeof(val), fh) != sizeof(val)) { + fprintf(stderr, "unable to read: %s\n", strerror(errno)); + return defVal; + } + + return val; +} + +static int read_header(FILE* fh, int* type, char** path, struct stat* st) +{ + *type = read_int32(fh, -1); + if (*type == TYPE_END) { + return 1; + } + + if (*type < 0) { + fprintf(stderr, "bad token %d in restore file\n", *type); + return 0; + } + + int32_t pathLen = read_int32(fh, -1); + if (pathLen <= 0) { + fprintf(stderr, "bad path length %d in restore file\n", pathLen); + return 0; + } + char* readPath = (char*)malloc(pathLen+1); + if (fread(readPath, 1, pathLen, fh) != (size_t)pathLen) { + fprintf(stderr, "truncated path in restore file\n"); + free(readPath); + return 0; + } + readPath[pathLen] = 0; + *path = readPath; + + st->st_uid = read_int32(fh, -1); + if (st->st_uid == (uid_t)-1) { + fprintf(stderr, "bad uid in restore file at '%s'\n", readPath); + return 0; + } + st->st_gid = read_int32(fh, -1); + if (st->st_gid == (gid_t)-1) { + fprintf(stderr, "bad gid in restore file at '%s'\n", readPath); + return 0; + } + st->st_mode = read_int32(fh, -1); + if (st->st_mode == (mode_t)-1) { + fprintf(stderr, "bad mode in restore file at '%s'\n", readPath); + return 0; + } + int64_t ltime = read_int64(fh, -1); + if (ltime < 0) { + fprintf(stderr, "bad atime in restore file at '%s'\n", readPath); + return 0; + } + st->st_atime = (time_t)(ltime/1000/1000/1000); + ltime = read_int64(fh, -1); + if (ltime < 0) { + fprintf(stderr, "bad mtime in restore file at '%s'\n", readPath); + return 0; + } + st->st_mtime = (time_t)(ltime/1000/1000/1000); + ltime = read_int64(fh, -1); + if (ltime < 0) { + fprintf(stderr, "bad ctime in restore file at '%s'\n", readPath); + return 0; + } + st->st_ctime = (time_t)(ltime/1000/1000/1000); + + st->st_mode &= (S_IRWXU|S_IRWXG|S_IRWXO); + + return 1; +} + +static int restore_data(const char* srcPath) +{ + int res = -1; + + FILE* fh = fopen(srcPath, "r"); + if (fh == NULL) { + fprintf(stderr, "Unable to open source '%s': %s\n", + srcPath, strerror(errno)); + return -1; + } + + inputFileVersion = read_int32(fh, 0); + if (inputFileVersion < FILE_VERSION_1 || inputFileVersion > FILE_VERSION) { + fprintf(stderr, "Restore file has bad version: 0x%x\n", inputFileVersion); + goto done; + } + + if (inputFileVersion >= FILE_VERSION_2) { + opt_backupAll = read_int32(fh, 0); + } else { + opt_backupAll = 0; + } + + // The path that shouldn't be deleted + backupFilePath = strdup(srcPath); + + printf("Wiping contents of /data...\n"); + if (!wipe("/data")) { + goto done; + } + + printf("Restoring from %s to /data...\n", srcPath); + + while (1) { + int type; + char* path = NULL; + if (read_header(fh, &type, &path, &statBuffer) == 0) { + goto done; + } + if (type == 0) { + break; + } + + const char* typeName = "?"; + + if (type == TYPE_DIR) { + typeName = "dir"; + + printf("Restoring dir %s...\n", path); + + if (mkdir(path, statBuffer.st_mode) != 0) { + if (errno != EEXIST) { + fprintf(stderr, "unable to create directory '%s': %s\n", + path, strerror(errno)); + free(path); + goto done; + } + } + + } else if (type == TYPE_FILE) { + typeName = "file"; + off_t size = read_int64(fh, -1); + if (size < 0) { + fprintf(stderr, "bad file size %ld in restore file\n", size); + free(path); + goto done; + } + + printf("Restoring file %s...\n", path); + + FILE* dest = fopen(path, "w"); + if (dest == NULL) { + fprintf(stderr, "unable to open destination file '%s': %s\n", + path, strerror(errno)); + free(path); + goto done; + } + + int copyres = copy_file(dest, fh, size, path, NULL); + fclose(dest); + if (!copyres) { + free(path); + goto done; + } + + } else { + fprintf(stderr, "unknown node type %d\n", type); + goto done; + } + + // Do this even for directories, since the dir may have already existed + // so we need to make sure it gets the correct mode. + if (chmod(path, statBuffer.st_mode&(S_IRWXU|S_IRWXG|S_IRWXO)) != 0) { + fprintf(stderr, "unable to chmod destination %s '%s' to 0x%x: %s\n", + typeName, path, statBuffer.st_mode, strerror(errno)); + free(path); + goto done; + } + + if (chown(path, statBuffer.st_uid, statBuffer.st_gid) != 0) { + fprintf(stderr, "unable to chown destination %s '%s' to uid %d / gid %d: %s\n", + typeName, path, (int)statBuffer.st_uid, (int)statBuffer.st_gid, strerror(errno)); + free(path); + goto done; + } + + struct utimbuf timbuf; + timbuf.actime = statBuffer.st_atime; + timbuf.modtime = statBuffer.st_mtime; + if (utime(path, &timbuf) != 0) { + fprintf(stderr, "unable to utime destination %s '%s': %s\n", + typeName, path, strerror(errno)); + free(path); + goto done; + } + + + free(path); + } + + res = 0; + +done: + fclose(fh); + + return res; +} + +static void show_help(const char *cmd) +{ + fprintf(stderr,"Usage: %s COMMAND [options] [backup-file-path]\n", cmd); + + fprintf(stderr, "commands are:\n" + " help Show this help text.\n" + " backup Perform a backup of /data.\n" + " restore Perform a restore of /data.\n"); + fprintf(stderr, "options include:\n" + " -h Show this help text.\n" + " -a Backup all files.\n"); + fprintf(stderr, "\nThe %s command allows you to perform low-level\n" + "backup and restore of the /data partition. This is\n" + "where all user data is kept, allowing for a fairly\n" + "complete restore of a device's state. Note that\n" + "because this is low-level, it will only work across\n" + "builds of the same (or very similar) device software.\n", + cmd); +} + +} /* namespace android */ + +int main (int argc, char **argv) +{ + int restore = 0; + + if (getuid() != AID_ROOT) { + fprintf(stderr, "error -- %s must run as root\n", argv[0]); + exit(-1); + } + + if (argc < 2) { + fprintf(stderr, "No command specified.\n"); + android::show_help(argv[0]); + exit(-1); + } + + if (0 == strcmp(argv[1], "restore")) { + restore = 1; + } else if (0 == strcmp(argv[1], "help")) { + android::show_help(argv[0]); + exit(0); + } else if (0 != strcmp(argv[1], "backup")) { + fprintf(stderr, "Unknown command: %s\n", argv[1]); + android::show_help(argv[0]); + exit(-1); + } + + android::opt_backupAll = 0; + + optind = 2; + + for (;;) { + int ret; + + ret = getopt(argc, argv, "ah"); + + if (ret < 0) { + break; + } + + switch(ret) { + case 'a': + android::opt_backupAll = 1; + if (restore) fprintf(stderr, "Warning: -a option ignored on restore\n"); + break; + case 'h': + android::show_help(argv[0]); + exit(0); + break; + + default: + fprintf(stderr,"Unrecognized Option\n"); + android::show_help(argv[0]); + exit(-1); + break; + } + } + + const char* backupFile = "/sdcard/backup.dat"; + + if (argc > optind) { + backupFile = argv[optind]; + optind++; + if (argc != optind) { + fprintf(stderr, "Too many arguments\n"); + android::show_help(argv[0]); + exit(-1); + } + } + + printf("Stopping system...\n"); + property_set("ctl.stop", "runtime"); + property_set("ctl.stop", "zygote"); + sleep(1); + + int res; + if (restore) { + res = android::restore_data(backupFile); + if (res != 0) { + // Don't restart system, since the data partition is hosed. + return res; + } + printf("Restore complete! Restarting system, cross your fingers...\n"); + } else { + res = android::backup_data(backupFile); + if (res == 0) { + printf("Backup complete! Restarting system...\n"); + } else { + printf("Restarting system...\n"); + } + } + + property_set("ctl.start", "zygote"); + property_set("ctl.start", "runtime"); +} diff --git a/cmds/screencap/Android.mk b/cmds/screencap/Android.mk new file mode 100644 index 0000000..ca8008b --- /dev/null +++ b/cmds/screencap/Android.mk @@ -0,0 +1,26 @@ +LOCAL_PATH:= $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES:= \ + screencap.cpp + +LOCAL_SHARED_LIBRARIES := \ + libcutils \ + libutils \ + libbinder \ + libskia \ + libui \ + libgui + +LOCAL_MODULE:= screencap + +LOCAL_MODULE_TAGS := optional + +LOCAL_C_INCLUDES += \ + external/skia/include/core \ + external/skia/include/effects \ + external/skia/include/images \ + external/skia/src/ports \ + external/skia/include/utils + +include $(BUILD_EXECUTABLE) diff --git a/cmds/screencap/screencap.cpp b/cmds/screencap/screencap.cpp new file mode 100644 index 0000000..a1ea81a --- /dev/null +++ b/cmds/screencap/screencap.cpp @@ -0,0 +1,195 @@ +/* + * Copyright (C) 2010 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <errno.h> +#include <unistd.h> +#include <stdio.h> +#include <fcntl.h> + +#include <linux/fb.h> +#include <sys/ioctl.h> +#include <sys/mman.h> + +#include <binder/IMemory.h> +#include <gui/SurfaceComposerClient.h> +#include <gui/ISurfaceComposer.h> + +#include <SkImageEncoder.h> +#include <SkBitmap.h> +#include <SkData.h> +#include <SkStream.h> + +using namespace android; + +static uint32_t DEFAULT_DISPLAY_ID = ISurfaceComposer::eDisplayIdMain; + +static void usage(const char* pname) +{ + fprintf(stderr, + "usage: %s [-hp] [-d display-id] [FILENAME]\n" + " -h: this message\n" + " -p: save the file as a png.\n" + " -d: specify the display id to capture, default %d.\n" + "If FILENAME ends with .png it will be saved as a png.\n" + "If FILENAME is not given, the results will be printed to stdout.\n", + pname, DEFAULT_DISPLAY_ID + ); +} + +static SkBitmap::Config flinger2skia(PixelFormat f) +{ + switch (f) { + case PIXEL_FORMAT_A_8: + return SkBitmap::kA8_Config; + case PIXEL_FORMAT_RGB_565: + return SkBitmap::kRGB_565_Config; + case PIXEL_FORMAT_RGBA_4444: + return SkBitmap::kARGB_4444_Config; + default: + return SkBitmap::kARGB_8888_Config; + } +} + +static status_t vinfoToPixelFormat(const fb_var_screeninfo& vinfo, + uint32_t* bytespp, uint32_t* f) +{ + + switch (vinfo.bits_per_pixel) { + case 16: + *f = PIXEL_FORMAT_RGB_565; + *bytespp = 2; + break; + case 24: + *f = PIXEL_FORMAT_RGB_888; + *bytespp = 3; + break; + case 32: + // TODO: do better decoding of vinfo here + *f = PIXEL_FORMAT_RGBX_8888; + *bytespp = 4; + break; + default: + return BAD_VALUE; + } + return NO_ERROR; +} + +int main(int argc, char** argv) +{ + const char* pname = argv[0]; + bool png = false; + int32_t displayId = DEFAULT_DISPLAY_ID; + int c; + while ((c = getopt(argc, argv, "phd:")) != -1) { + switch (c) { + case 'p': + png = true; + break; + case 'd': + displayId = atoi(optarg); + break; + case '?': + case 'h': + usage(pname); + return 1; + } + } + argc -= optind; + argv += optind; + + int fd = -1; + if (argc == 0) { + fd = dup(STDOUT_FILENO); + } else if (argc == 1) { + const char* fn = argv[0]; + fd = open(fn, O_WRONLY | O_CREAT | O_TRUNC, 0664); + if (fd == -1) { + fprintf(stderr, "Error opening file: %s (%s)\n", fn, strerror(errno)); + return 1; + } + const int len = strlen(fn); + if (len >= 4 && 0 == strcmp(fn+len-4, ".png")) { + png = true; + } + } + + if (fd == -1) { + usage(pname); + return 1; + } + + void const* mapbase = MAP_FAILED; + ssize_t mapsize = -1; + + void const* base = 0; + uint32_t w, h, f; + size_t size = 0; + + ScreenshotClient screenshot; + sp<IBinder> display = SurfaceComposerClient::getBuiltInDisplay(displayId); + if (display != NULL && screenshot.update(display) == NO_ERROR) { + base = screenshot.getPixels(); + w = screenshot.getWidth(); + h = screenshot.getHeight(); + f = screenshot.getFormat(); + size = screenshot.getSize(); + } else { + const char* fbpath = "/dev/graphics/fb0"; + int fb = open(fbpath, O_RDONLY); + if (fb >= 0) { + struct fb_var_screeninfo vinfo; + if (ioctl(fb, FBIOGET_VSCREENINFO, &vinfo) == 0) { + uint32_t bytespp; + if (vinfoToPixelFormat(vinfo, &bytespp, &f) == NO_ERROR) { + size_t offset = (vinfo.xoffset + vinfo.yoffset*vinfo.xres) * bytespp; + w = vinfo.xres; + h = vinfo.yres; + size = w*h*bytespp; + mapsize = offset + size; + mapbase = mmap(0, mapsize, PROT_READ, MAP_PRIVATE, fb, 0); + if (mapbase != MAP_FAILED) { + base = (void const *)((char const *)mapbase + offset); + } + } + } + close(fb); + } + } + + if (base) { + if (png) { + SkBitmap b; + b.setConfig(flinger2skia(f), w, h); + b.setPixels((void*)base); + SkDynamicMemoryWStream stream; + SkImageEncoder::EncodeStream(&stream, b, + SkImageEncoder::kPNG_Type, SkImageEncoder::kDefaultQuality); + SkData* streamData = stream.copyToData(); + write(fd, streamData->data(), streamData->size()); + streamData->unref(); + } else { + write(fd, &w, 4); + write(fd, &h, 4); + write(fd, &f, 4); + write(fd, base, size); + } + } + close(fd); + if (mapbase != MAP_FAILED) { + munmap((void *)mapbase, mapsize); + } + return 0; +} diff --git a/cmds/screenshot/Android.mk b/cmds/screenshot/Android.mk new file mode 100644 index 0000000..73a8e22 --- /dev/null +++ b/cmds/screenshot/Android.mk @@ -0,0 +1,12 @@ +LOCAL_PATH:= $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES := screenshot.c + +LOCAL_MODULE := screenshot + +LOCAL_SHARED_LIBRARIES := libcutils libz +LOCAL_STATIC_LIBRARIES := libpng +LOCAL_C_INCLUDES += external/zlib + +include $(BUILD_EXECUTABLE) diff --git a/cmds/screenshot/screenshot.c b/cmds/screenshot/screenshot.c new file mode 100644 index 0000000..cca80c3 --- /dev/null +++ b/cmds/screenshot/screenshot.c @@ -0,0 +1,171 @@ +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <fcntl.h> +#include <errno.h> + +#include <linux/fb.h> + +#include <zlib.h> +#include <libpng/png.h> + +#include "private/android_filesystem_config.h" + +#define LOG_TAG "screenshot" +#include <utils/Log.h> + +void take_screenshot(FILE *fb_in, FILE *fb_out) { + int fb; + char imgbuf[0x10000]; + struct fb_var_screeninfo vinfo; + png_structp png; + png_infop info; + unsigned int r,c,rowlen; + unsigned int bytespp,offset; + + fb = fileno(fb_in); + if(fb < 0) { + ALOGE("failed to open framebuffer\n"); + return; + } + fb_in = fdopen(fb, "r"); + + if(ioctl(fb, FBIOGET_VSCREENINFO, &vinfo) < 0) { + ALOGE("failed to get framebuffer info\n"); + return; + } + fcntl(fb, F_SETFD, FD_CLOEXEC); + + png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); + if (png == NULL) { + ALOGE("failed png_create_write_struct\n"); + fclose(fb_in); + return; + } + + png_init_io(png, fb_out); + info = png_create_info_struct(png); + if (info == NULL) { + ALOGE("failed png_create_info_struct\n"); + png_destroy_write_struct(&png, NULL); + fclose(fb_in); + return; + } + if (setjmp(png_jmpbuf(png))) { + ALOGE("failed png setjmp\n"); + png_destroy_write_struct(&png, NULL); + fclose(fb_in); + return; + } + + bytespp = vinfo.bits_per_pixel / 8; + png_set_IHDR(png, info, + vinfo.xres, vinfo.yres, vinfo.bits_per_pixel / 4, + PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, + PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); + png_write_info(png, info); + + rowlen=vinfo.xres * bytespp; + if (rowlen > sizeof(imgbuf)) { + ALOGE("crazy rowlen: %d\n", rowlen); + png_destroy_write_struct(&png, NULL); + fclose(fb_in); + return; + } + + offset = vinfo.xoffset * bytespp + vinfo.xres * vinfo.yoffset * bytespp; + fseek(fb_in, offset, SEEK_SET); + + for(r=0; r<vinfo.yres; r++) { + int len = fread(imgbuf, 1, rowlen, fb_in); + if (len <= 0) break; + png_write_row(png, (png_bytep)imgbuf); + } + + png_write_end(png, info); + fclose(fb_in); + png_destroy_write_struct(&png, NULL); +} + +void fork_sound(const char* path) { + pid_t pid = fork(); + if (pid == 0) { + execl("/system/bin/stagefright", "stagefright", "-o", "-a", path, NULL); + } +} + +void usage() { + fprintf(stderr, + "usage: screenshot [-s soundfile] filename.png\n" + " -s: play a sound effect to signal success\n" + " -i: autoincrement to avoid overwriting filename.png\n" + ); +} + +int main(int argc, char**argv) { + FILE *png = NULL; + FILE *fb_in = NULL; + char outfile[PATH_MAX] = ""; + + char * soundfile = NULL; + int do_increment = 0; + + int c; + while ((c = getopt(argc, argv, "s:i")) != -1) { + switch (c) { + case 's': soundfile = optarg; break; + case 'i': do_increment = 1; break; + case '?': + case 'h': + usage(); exit(1); + } + } + argc -= optind; + argv += optind; + + if (argc < 1) { + usage(); exit(1); + } + + strlcpy(outfile, argv[0], PATH_MAX); + if (do_increment) { + struct stat st; + char base[PATH_MAX] = ""; + int i = 0; + while (stat(outfile, &st) == 0) { + if (!base[0]) { + char *p = strrchr(outfile, '.'); + if (p) *p = '\0'; + strcpy(base, outfile); + } + snprintf(outfile, PATH_MAX, "%s-%d.png", base, ++i); + } + } + + fb_in = fopen("/dev/graphics/fb0", "r"); + if (!fb_in) { + fprintf(stderr, "error: could not read framebuffer\n"); + exit(1); + } + + /* switch to non-root user and group */ + gid_t groups[] = { AID_LOG, AID_SDCARD_RW }; + setgroups(sizeof(groups)/sizeof(groups[0]), groups); + setuid(AID_SHELL); + + png = fopen(outfile, "w"); + if (!png) { + fprintf(stderr, "error: writing file %s: %s\n", + outfile, strerror(errno)); + exit(1); + } + + take_screenshot(fb_in, png); + + if (soundfile) { + fork_sound(soundfile); + } + + exit(0); +} diff --git a/cmds/service/Android.mk b/cmds/service/Android.mk new file mode 100644 index 0000000..275bbb2 --- /dev/null +++ b/cmds/service/Android.mk @@ -0,0 +1,16 @@ +LOCAL_PATH:= $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES:= \ + service.cpp + +LOCAL_SHARED_LIBRARIES := libutils libbinder + +ifeq ($(TARGET_OS),linux) + LOCAL_CFLAGS += -DXP_UNIX + #LOCAL_SHARED_LIBRARIES += librt +endif + +LOCAL_MODULE:= service + +include $(BUILD_EXECUTABLE) diff --git a/cmds/service/MODULE_LICENSE_APACHE2 b/cmds/service/MODULE_LICENSE_APACHE2 new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/cmds/service/MODULE_LICENSE_APACHE2 diff --git a/cmds/service/NOTICE b/cmds/service/NOTICE new file mode 100644 index 0000000..c5b1efa --- /dev/null +++ b/cmds/service/NOTICE @@ -0,0 +1,190 @@ + + Copyright (c) 2005-2008, The Android Open Source Project + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. 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For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. 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If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. 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In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + diff --git a/cmds/service/service.cpp b/cmds/service/service.cpp new file mode 100644 index 0000000..32db83b --- /dev/null +++ b/cmds/service/service.cpp @@ -0,0 +1,275 @@ +/* + * Command line access to services. + * + */ + +#include <binder/Parcel.h> +#include <binder/ProcessState.h> +#include <binder/IServiceManager.h> +#include <utils/TextOutput.h> + +#include <getopt.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <sys/time.h> + +using namespace android; + +void writeString16(Parcel& parcel, const char* string) +{ + if (string != NULL) + { + parcel.writeString16(String16(string)); + } + else + { + parcel.writeInt32(-1); + } +} + +// get the name of the generic interface we hold a reference to +static String16 get_interface_name(sp<IBinder> service) +{ + if (service != NULL) { + Parcel data, reply; + status_t err = service->transact(IBinder::INTERFACE_TRANSACTION, data, &reply); + if (err == NO_ERROR) { + return reply.readString16(); + } + } + return String16(); +} + +static String8 good_old_string(const String16& src) +{ + String8 name8; + char ch8[2]; + ch8[1] = 0; + for (unsigned j = 0; j < src.size(); j++) { + char16_t ch = src[j]; + if (ch < 128) ch8[0] = (char)ch; + name8.append(ch8); + } + return name8; +} + +int main(int argc, char* const argv[]) +{ + sp<IServiceManager> sm = defaultServiceManager(); + fflush(stdout); + if (sm == NULL) { + aerr << "service: Unable to get default service manager!" << endl; + return 20; + } + + bool wantsUsage = false; + int result = 0; + + while (1) { + int ic = getopt(argc, argv, "h?"); + if (ic < 0) + break; + + switch (ic) { + case 'h': + case '?': + wantsUsage = true; + break; + default: + aerr << "service: Unknown option -" << ic << endl; + wantsUsage = true; + result = 10; + break; + } + } + + if (optind >= argc) { + wantsUsage = true; + } else if (!wantsUsage) { + if (strcmp(argv[optind], "check") == 0) { + optind++; + if (optind < argc) { + sp<IBinder> service = sm->checkService(String16(argv[optind])); + aout << "Service " << argv[optind] << + (service == NULL ? ": not found" : ": found") << endl; + } else { + aerr << "service: No service specified for check" << endl; + wantsUsage = true; + result = 10; + } + } + else if (strcmp(argv[optind], "list") == 0) { + Vector<String16> services = sm->listServices(); + aout << "Found " << services.size() << " services:" << endl; + for (unsigned i = 0; i < services.size(); i++) { + String16 name = services[i]; + sp<IBinder> service = sm->checkService(name); + aout << i + << "\t" << good_old_string(name) + << ": [" << good_old_string(get_interface_name(service)) << "]" + << endl; + } + } else if (strcmp(argv[optind], "call") == 0) { + optind++; + if (optind+1 < argc) { + int serviceArg = optind; + sp<IBinder> service = sm->checkService(String16(argv[optind++])); + String16 ifName = get_interface_name(service); + int32_t code = atoi(argv[optind++]); + if (service != NULL && ifName.size() > 0) { + Parcel data, reply; + + // the interface name is first + data.writeInterfaceToken(ifName); + + // then the rest of the call arguments + while (optind < argc) { + if (strcmp(argv[optind], "i32") == 0) { + optind++; + if (optind >= argc) { + aerr << "service: no integer supplied for 'i32'" << endl; + wantsUsage = true; + result = 10; + break; + } + data.writeInt32(atoi(argv[optind++])); + } else if (strcmp(argv[optind], "s16") == 0) { + optind++; + if (optind >= argc) { + aerr << "service: no string supplied for 's16'" << endl; + wantsUsage = true; + result = 10; + break; + } + data.writeString16(String16(argv[optind++])); + } else if (strcmp(argv[optind], "null") == 0) { + optind++; + data.writeStrongBinder(NULL); + } else if (strcmp(argv[optind], "intent") == 0) { + + char* action = NULL; + char* dataArg = NULL; + char* type = NULL; + int launchFlags = 0; + char* component = NULL; + int categoryCount = 0; + char* categories[16]; + + char* context1 = NULL; + + optind++; + + while (optind < argc) + { + char* key = strtok_r(argv[optind], "=", &context1); + char* value = strtok_r(NULL, "=", &context1); + + // we have reached the end of the XXX=XXX args. + if (key == NULL) break; + + if (strcmp(key, "action") == 0) + { + action = value; + } + else if (strcmp(key, "data") == 0) + { + dataArg = value; + } + else if (strcmp(key, "type") == 0) + { + type = value; + } + else if (strcmp(key, "launchFlags") == 0) + { + launchFlags = atoi(value); + } + else if (strcmp(key, "component") == 0) + { + component = value; + } + else if (strcmp(key, "categories") == 0) + { + char* context2 = NULL; + int categoryCount = 0; + categories[categoryCount] = strtok_r(value, ",", &context2); + + while (categories[categoryCount] != NULL) + { + categoryCount++; + categories[categoryCount] = strtok_r(NULL, ",", &context2); + } + } + + optind++; + } + + writeString16(data, action); + writeString16(data, dataArg); + writeString16(data, type); + data.writeInt32(launchFlags); + writeString16(data, component); + + if (categoryCount > 0) + { + data.writeInt32(categoryCount); + for (int i = 0 ; i < categoryCount ; i++) + { + writeString16(data, categories[i]); + } + } + else + { + data.writeInt32(0); + } + + // for now just set the extra field to be null. + data.writeInt32(-1); + } else { + aerr << "service: unknown option " << argv[optind] << endl; + wantsUsage = true; + result = 10; + break; + } + } + + service->transact(code, data, &reply); + aout << "Result: " << reply << endl; + } else { + aerr << "service: Service " << argv[serviceArg] + << " does not exist" << endl; + result = 10; + } + } else { + if (optind < argc) { + aerr << "service: No service specified for call" << endl; + } else { + aerr << "service: No code specified for call" << endl; + } + wantsUsage = true; + result = 10; + } + } else { + aerr << "service: Unknown command " << argv[optind] << endl; + wantsUsage = true; + result = 10; + } + } + + if (wantsUsage) { + aout << "Usage: service [-h|-?]\n" + " service list\n" + " service check SERVICE\n" + " service call SERVICE CODE [i32 INT | s16 STR] ...\n" + "Options:\n" + " i32: Write the integer INT into the send parcel.\n" + " s16: Write the UTF-16 string STR into the send parcel.\n"; +// " intent: Write and Intent int the send parcel. ARGS can be\n" +// " action=STR data=STR type=STR launchFlags=INT component=STR categories=STR[,STR,...]\n"; + return result; + } + + return result; +} + diff --git a/cmds/servicemanager/Android.mk b/cmds/servicemanager/Android.mk new file mode 100644 index 0000000..8840867 --- /dev/null +++ b/cmds/servicemanager/Android.mk @@ -0,0 +1,12 @@ +LOCAL_PATH:= $(call my-dir) + +#include $(CLEAR_VARS) +#LOCAL_SRC_FILES := bctest.c binder.c +#LOCAL_MODULE := bctest +#include $(BUILD_EXECUTABLE) + +include $(CLEAR_VARS) +LOCAL_SHARED_LIBRARIES := liblog +LOCAL_SRC_FILES := service_manager.c binder.c +LOCAL_MODULE := servicemanager +include $(BUILD_EXECUTABLE) diff --git a/cmds/servicemanager/bctest.c b/cmds/servicemanager/bctest.c new file mode 100644 index 0000000..ff5aced --- /dev/null +++ b/cmds/servicemanager/bctest.c @@ -0,0 +1,103 @@ +/* Copyright 2008 The Android Open Source Project + */ + +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> + +#include "binder.h" + +void *svcmgr_lookup(struct binder_state *bs, void *target, const char *name) +{ + void *ptr; + unsigned iodata[512/4]; + struct binder_io msg, reply; + + bio_init(&msg, iodata, sizeof(iodata), 4); + bio_put_uint32(&msg, 0); // strict mode header + bio_put_string16_x(&msg, SVC_MGR_NAME); + bio_put_string16_x(&msg, name); + + if (binder_call(bs, &msg, &reply, target, SVC_MGR_CHECK_SERVICE)) + return 0; + + ptr = bio_get_ref(&reply); + + if (ptr) + binder_acquire(bs, ptr); + + binder_done(bs, &msg, &reply); + + return ptr; +} + +int svcmgr_publish(struct binder_state *bs, void *target, const char *name, void *ptr) +{ + unsigned status; + unsigned iodata[512/4]; + struct binder_io msg, reply; + + bio_init(&msg, iodata, sizeof(iodata), 4); + bio_put_uint32(&msg, 0); // strict mode header + bio_put_string16_x(&msg, SVC_MGR_NAME); + bio_put_string16_x(&msg, name); + bio_put_obj(&msg, ptr); + + if (binder_call(bs, &msg, &reply, target, SVC_MGR_ADD_SERVICE)) + return -1; + + status = bio_get_uint32(&reply); + + binder_done(bs, &msg, &reply); + + return status; +} + +unsigned token; + +int main(int argc, char **argv) +{ + int fd; + struct binder_state *bs; + void *svcmgr = BINDER_SERVICE_MANAGER; + + bs = binder_open(128*1024); + + argc--; + argv++; + while (argc > 0) { + if (!strcmp(argv[0],"alt")) { + void *ptr = svcmgr_lookup(bs, svcmgr, "alt_svc_mgr"); + if (!ptr) { + fprintf(stderr,"cannot find alt_svc_mgr\n"); + return -1; + } + svcmgr = ptr; + fprintf(stderr,"svcmgr is via %p\n", ptr); + } else if (!strcmp(argv[0],"lookup")) { + void *ptr; + if (argc < 2) { + fprintf(stderr,"argument required\n"); + return -1; + } + ptr = svcmgr_lookup(bs, svcmgr, argv[1]); + fprintf(stderr,"lookup(%s) = %p\n", argv[1], ptr); + argc--; + argv++; + } else if (!strcmp(argv[0],"publish")) { + if (argc < 2) { + fprintf(stderr,"argument required\n"); + return -1; + } + svcmgr_publish(bs, svcmgr, argv[1], &token); + argc--; + argv++; + } else { + fprintf(stderr,"unknown command %s\n", argv[0]); + return -1; + } + argc--; + argv++; + } + return 0; +} diff --git a/cmds/servicemanager/binder.c b/cmds/servicemanager/binder.c new file mode 100644 index 0000000..1985756 --- /dev/null +++ b/cmds/servicemanager/binder.c @@ -0,0 +1,616 @@ +/* Copyright 2008 The Android Open Source Project + */ + +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/mman.h> + +#include "binder.h" + +#define MAX_BIO_SIZE (1 << 30) + +#define TRACE 0 + +#define LOG_TAG "Binder" +#include <cutils/log.h> + +void bio_init_from_txn(struct binder_io *io, struct binder_txn *txn); + +#if TRACE +void hexdump(void *_data, unsigned len) +{ + unsigned char *data = _data; + unsigned count; + + for (count = 0; count < len; count++) { + if ((count & 15) == 0) + fprintf(stderr,"%04x:", count); + fprintf(stderr," %02x %c", *data, + (*data < 32) || (*data > 126) ? '.' : *data); + data++; + if ((count & 15) == 15) + fprintf(stderr,"\n"); + } + if ((count & 15) != 0) + fprintf(stderr,"\n"); +} + +void binder_dump_txn(struct binder_txn *txn) +{ + struct binder_object *obj; + unsigned *offs = txn->offs; + unsigned count = txn->offs_size / 4; + + fprintf(stderr," target %p cookie %p code %08x flags %08x\n", + txn->target, txn->cookie, txn->code, txn->flags); + fprintf(stderr," pid %8d uid %8d data %8d offs %8d\n", + txn->sender_pid, txn->sender_euid, txn->data_size, txn->offs_size); + hexdump(txn->data, txn->data_size); + while (count--) { + obj = (void*) (((char*) txn->data) + *offs++); + fprintf(stderr," - type %08x flags %08x ptr %p cookie %p\n", + obj->type, obj->flags, obj->pointer, obj->cookie); + } +} + +#define NAME(n) case n: return #n +const char *cmd_name(uint32_t cmd) +{ + switch(cmd) { + NAME(BR_NOOP); + NAME(BR_TRANSACTION_COMPLETE); + NAME(BR_INCREFS); + NAME(BR_ACQUIRE); + NAME(BR_RELEASE); + NAME(BR_DECREFS); + NAME(BR_TRANSACTION); + NAME(BR_REPLY); + NAME(BR_FAILED_REPLY); + NAME(BR_DEAD_REPLY); + NAME(BR_DEAD_BINDER); + default: return "???"; + } +} +#else +#define hexdump(a,b) do{} while (0) +#define binder_dump_txn(txn) do{} while (0) +#endif + +#define BIO_F_SHARED 0x01 /* needs to be buffer freed */ +#define BIO_F_OVERFLOW 0x02 /* ran out of space */ +#define BIO_F_IOERROR 0x04 +#define BIO_F_MALLOCED 0x08 /* needs to be free()'d */ + +struct binder_state +{ + int fd; + void *mapped; + unsigned mapsize; +}; + +struct binder_state *binder_open(unsigned mapsize) +{ + struct binder_state *bs; + + bs = malloc(sizeof(*bs)); + if (!bs) { + errno = ENOMEM; + return 0; + } + + bs->fd = open("/dev/binder", O_RDWR); + if (bs->fd < 0) { + fprintf(stderr,"binder: cannot open device (%s)\n", + strerror(errno)); + goto fail_open; + } + + bs->mapsize = mapsize; + bs->mapped = mmap(NULL, mapsize, PROT_READ, MAP_PRIVATE, bs->fd, 0); + if (bs->mapped == MAP_FAILED) { + fprintf(stderr,"binder: cannot map device (%s)\n", + strerror(errno)); + goto fail_map; + } + + /* TODO: check version */ + + return bs; + +fail_map: + close(bs->fd); +fail_open: + free(bs); + return 0; +} + +void binder_close(struct binder_state *bs) +{ + munmap(bs->mapped, bs->mapsize); + close(bs->fd); + free(bs); +} + +int binder_become_context_manager(struct binder_state *bs) +{ + return ioctl(bs->fd, BINDER_SET_CONTEXT_MGR, 0); +} + +int binder_write(struct binder_state *bs, void *data, unsigned len) +{ + struct binder_write_read bwr; + int res; + bwr.write_size = len; + bwr.write_consumed = 0; + bwr.write_buffer = (unsigned) data; + bwr.read_size = 0; + bwr.read_consumed = 0; + bwr.read_buffer = 0; + res = ioctl(bs->fd, BINDER_WRITE_READ, &bwr); + if (res < 0) { + fprintf(stderr,"binder_write: ioctl failed (%s)\n", + strerror(errno)); + } + return res; +} + +void binder_send_reply(struct binder_state *bs, + struct binder_io *reply, + void *buffer_to_free, + int status) +{ + struct { + uint32_t cmd_free; + void *buffer; + uint32_t cmd_reply; + struct binder_txn txn; + } __attribute__((packed)) data; + + data.cmd_free = BC_FREE_BUFFER; + data.buffer = buffer_to_free; + data.cmd_reply = BC_REPLY; + data.txn.target = 0; + data.txn.cookie = 0; + data.txn.code = 0; + if (status) { + data.txn.flags = TF_STATUS_CODE; + data.txn.data_size = sizeof(int); + data.txn.offs_size = 0; + data.txn.data = &status; + data.txn.offs = 0; + } else { + data.txn.flags = 0; + data.txn.data_size = reply->data - reply->data0; + data.txn.offs_size = ((char*) reply->offs) - ((char*) reply->offs0); + data.txn.data = reply->data0; + data.txn.offs = reply->offs0; + } + binder_write(bs, &data, sizeof(data)); +} + +int binder_parse(struct binder_state *bs, struct binder_io *bio, + uint32_t *ptr, uint32_t size, binder_handler func) +{ + int r = 1; + uint32_t *end = ptr + (size / 4); + + while (ptr < end) { + uint32_t cmd = *ptr++; +#if TRACE + fprintf(stderr,"%s:\n", cmd_name(cmd)); +#endif + switch(cmd) { + case BR_NOOP: + break; + case BR_TRANSACTION_COMPLETE: + break; + case BR_INCREFS: + case BR_ACQUIRE: + case BR_RELEASE: + case BR_DECREFS: +#if TRACE + fprintf(stderr," %08x %08x\n", ptr[0], ptr[1]); +#endif + ptr += 2; + break; + case BR_TRANSACTION: { + struct binder_txn *txn = (void *) ptr; + if ((end - ptr) * sizeof(uint32_t) < sizeof(struct binder_txn)) { + ALOGE("parse: txn too small!\n"); + return -1; + } + binder_dump_txn(txn); + if (func) { + unsigned rdata[256/4]; + struct binder_io msg; + struct binder_io reply; + int res; + + bio_init(&reply, rdata, sizeof(rdata), 4); + bio_init_from_txn(&msg, txn); + res = func(bs, txn, &msg, &reply); + binder_send_reply(bs, &reply, txn->data, res); + } + ptr += sizeof(*txn) / sizeof(uint32_t); + break; + } + case BR_REPLY: { + struct binder_txn *txn = (void*) ptr; + if ((end - ptr) * sizeof(uint32_t) < sizeof(struct binder_txn)) { + ALOGE("parse: reply too small!\n"); + return -1; + } + binder_dump_txn(txn); + if (bio) { + bio_init_from_txn(bio, txn); + bio = 0; + } else { + /* todo FREE BUFFER */ + } + ptr += (sizeof(*txn) / sizeof(uint32_t)); + r = 0; + break; + } + case BR_DEAD_BINDER: { + struct binder_death *death = (void*) *ptr++; + death->func(bs, death->ptr); + break; + } + case BR_FAILED_REPLY: + r = -1; + break; + case BR_DEAD_REPLY: + r = -1; + break; + default: + ALOGE("parse: OOPS %d\n", cmd); + return -1; + } + } + + return r; +} + +void binder_acquire(struct binder_state *bs, void *ptr) +{ + uint32_t cmd[2]; + cmd[0] = BC_ACQUIRE; + cmd[1] = (uint32_t) ptr; + binder_write(bs, cmd, sizeof(cmd)); +} + +void binder_release(struct binder_state *bs, void *ptr) +{ + uint32_t cmd[2]; + cmd[0] = BC_RELEASE; + cmd[1] = (uint32_t) ptr; + binder_write(bs, cmd, sizeof(cmd)); +} + +void binder_link_to_death(struct binder_state *bs, void *ptr, struct binder_death *death) +{ + uint32_t cmd[3]; + cmd[0] = BC_REQUEST_DEATH_NOTIFICATION; + cmd[1] = (uint32_t) ptr; + cmd[2] = (uint32_t) death; + binder_write(bs, cmd, sizeof(cmd)); +} + + +int binder_call(struct binder_state *bs, + struct binder_io *msg, struct binder_io *reply, + void *target, uint32_t code) +{ + int res; + struct binder_write_read bwr; + struct { + uint32_t cmd; + struct binder_txn txn; + } writebuf; + unsigned readbuf[32]; + + if (msg->flags & BIO_F_OVERFLOW) { + fprintf(stderr,"binder: txn buffer overflow\n"); + goto fail; + } + + writebuf.cmd = BC_TRANSACTION; + writebuf.txn.target = target; + writebuf.txn.code = code; + writebuf.txn.flags = 0; + writebuf.txn.data_size = msg->data - msg->data0; + writebuf.txn.offs_size = ((char*) msg->offs) - ((char*) msg->offs0); + writebuf.txn.data = msg->data0; + writebuf.txn.offs = msg->offs0; + + bwr.write_size = sizeof(writebuf); + bwr.write_consumed = 0; + bwr.write_buffer = (unsigned) &writebuf; + + hexdump(msg->data0, msg->data - msg->data0); + for (;;) { + bwr.read_size = sizeof(readbuf); + bwr.read_consumed = 0; + bwr.read_buffer = (unsigned) readbuf; + + res = ioctl(bs->fd, BINDER_WRITE_READ, &bwr); + + if (res < 0) { + fprintf(stderr,"binder: ioctl failed (%s)\n", strerror(errno)); + goto fail; + } + + res = binder_parse(bs, reply, readbuf, bwr.read_consumed, 0); + if (res == 0) return 0; + if (res < 0) goto fail; + } + +fail: + memset(reply, 0, sizeof(*reply)); + reply->flags |= BIO_F_IOERROR; + return -1; +} + +void binder_loop(struct binder_state *bs, binder_handler func) +{ + int res; + struct binder_write_read bwr; + unsigned readbuf[32]; + + bwr.write_size = 0; + bwr.write_consumed = 0; + bwr.write_buffer = 0; + + readbuf[0] = BC_ENTER_LOOPER; + binder_write(bs, readbuf, sizeof(unsigned)); + + for (;;) { + bwr.read_size = sizeof(readbuf); + bwr.read_consumed = 0; + bwr.read_buffer = (unsigned) readbuf; + + res = ioctl(bs->fd, BINDER_WRITE_READ, &bwr); + + if (res < 0) { + ALOGE("binder_loop: ioctl failed (%s)\n", strerror(errno)); + break; + } + + res = binder_parse(bs, 0, readbuf, bwr.read_consumed, func); + if (res == 0) { + ALOGE("binder_loop: unexpected reply?!\n"); + break; + } + if (res < 0) { + ALOGE("binder_loop: io error %d %s\n", res, strerror(errno)); + break; + } + } +} + +void bio_init_from_txn(struct binder_io *bio, struct binder_txn *txn) +{ + bio->data = bio->data0 = txn->data; + bio->offs = bio->offs0 = txn->offs; + bio->data_avail = txn->data_size; + bio->offs_avail = txn->offs_size / 4; + bio->flags = BIO_F_SHARED; +} + +void bio_init(struct binder_io *bio, void *data, + uint32_t maxdata, uint32_t maxoffs) +{ + uint32_t n = maxoffs * sizeof(uint32_t); + + if (n > maxdata) { + bio->flags = BIO_F_OVERFLOW; + bio->data_avail = 0; + bio->offs_avail = 0; + return; + } + + bio->data = bio->data0 = (char *) data + n; + bio->offs = bio->offs0 = data; + bio->data_avail = maxdata - n; + bio->offs_avail = maxoffs; + bio->flags = 0; +} + +static void *bio_alloc(struct binder_io *bio, uint32_t size) +{ + size = (size + 3) & (~3); + if (size > bio->data_avail) { + bio->flags |= BIO_F_OVERFLOW; + return 0; + } else { + void *ptr = bio->data; + bio->data += size; + bio->data_avail -= size; + return ptr; + } +} + +void binder_done(struct binder_state *bs, + struct binder_io *msg, + struct binder_io *reply) +{ + if (reply->flags & BIO_F_SHARED) { + uint32_t cmd[2]; + cmd[0] = BC_FREE_BUFFER; + cmd[1] = (uint32_t) reply->data0; + binder_write(bs, cmd, sizeof(cmd)); + reply->flags = 0; + } +} + +static struct binder_object *bio_alloc_obj(struct binder_io *bio) +{ + struct binder_object *obj; + + obj = bio_alloc(bio, sizeof(*obj)); + + if (obj && bio->offs_avail) { + bio->offs_avail--; + *bio->offs++ = ((char*) obj) - ((char*) bio->data0); + return obj; + } + + bio->flags |= BIO_F_OVERFLOW; + return 0; +} + +void bio_put_uint32(struct binder_io *bio, uint32_t n) +{ + uint32_t *ptr = bio_alloc(bio, sizeof(n)); + if (ptr) + *ptr = n; +} + +void bio_put_obj(struct binder_io *bio, void *ptr) +{ + struct binder_object *obj; + + obj = bio_alloc_obj(bio); + if (!obj) + return; + + obj->flags = 0x7f | FLAT_BINDER_FLAG_ACCEPTS_FDS; + obj->type = BINDER_TYPE_BINDER; + obj->pointer = ptr; + obj->cookie = 0; +} + +void bio_put_ref(struct binder_io *bio, void *ptr) +{ + struct binder_object *obj; + + if (ptr) + obj = bio_alloc_obj(bio); + else + obj = bio_alloc(bio, sizeof(*obj)); + + if (!obj) + return; + + obj->flags = 0x7f | FLAT_BINDER_FLAG_ACCEPTS_FDS; + obj->type = BINDER_TYPE_HANDLE; + obj->pointer = ptr; + obj->cookie = 0; +} + +void bio_put_string16(struct binder_io *bio, const uint16_t *str) +{ + uint32_t len; + uint16_t *ptr; + + if (!str) { + bio_put_uint32(bio, 0xffffffff); + return; + } + + len = 0; + while (str[len]) len++; + + if (len >= (MAX_BIO_SIZE / sizeof(uint16_t))) { + bio_put_uint32(bio, 0xffffffff); + return; + } + + bio_put_uint32(bio, len); + len = (len + 1) * sizeof(uint16_t); + ptr = bio_alloc(bio, len); + if (ptr) + memcpy(ptr, str, len); +} + +void bio_put_string16_x(struct binder_io *bio, const char *_str) +{ + unsigned char *str = (unsigned char*) _str; + uint32_t len; + uint16_t *ptr; + + if (!str) { + bio_put_uint32(bio, 0xffffffff); + return; + } + + len = strlen(_str); + + if (len >= (MAX_BIO_SIZE / sizeof(uint16_t))) { + bio_put_uint32(bio, 0xffffffff); + return; + } + + bio_put_uint32(bio, len); + ptr = bio_alloc(bio, (len + 1) * sizeof(uint16_t)); + if (!ptr) + return; + + while (*str) + *ptr++ = *str++; + *ptr++ = 0; +} + +static void *bio_get(struct binder_io *bio, uint32_t size) +{ + size = (size + 3) & (~3); + + if (bio->data_avail < size){ + bio->data_avail = 0; + bio->flags |= BIO_F_OVERFLOW; + return 0; + } else { + void *ptr = bio->data; + bio->data += size; + bio->data_avail -= size; + return ptr; + } +} + +uint32_t bio_get_uint32(struct binder_io *bio) +{ + uint32_t *ptr = bio_get(bio, sizeof(*ptr)); + return ptr ? *ptr : 0; +} + +uint16_t *bio_get_string16(struct binder_io *bio, unsigned *sz) +{ + unsigned len; + len = bio_get_uint32(bio); + if (sz) + *sz = len; + return bio_get(bio, (len + 1) * sizeof(uint16_t)); +} + +static struct binder_object *_bio_get_obj(struct binder_io *bio) +{ + unsigned n; + unsigned off = bio->data - bio->data0; + + /* TODO: be smarter about this? */ + for (n = 0; n < bio->offs_avail; n++) { + if (bio->offs[n] == off) + return bio_get(bio, sizeof(struct binder_object)); + } + + bio->data_avail = 0; + bio->flags |= BIO_F_OVERFLOW; + return 0; +} + +void *bio_get_ref(struct binder_io *bio) +{ + struct binder_object *obj; + + obj = _bio_get_obj(bio); + if (!obj) + return 0; + + if (obj->type == BINDER_TYPE_HANDLE) + return obj->pointer; + + return 0; +} diff --git a/cmds/servicemanager/binder.h b/cmds/servicemanager/binder.h new file mode 100644 index 0000000..d8c51ef --- /dev/null +++ b/cmds/servicemanager/binder.h @@ -0,0 +1,119 @@ +/* Copyright 2008 The Android Open Source Project + */ + +#ifndef _BINDER_H_ +#define _BINDER_H_ + +#include <sys/ioctl.h> +#include <linux/binder.h> + +struct binder_state; + +struct binder_object +{ + uint32_t type; + uint32_t flags; + void *pointer; + void *cookie; +}; + +struct binder_txn +{ + void *target; + void *cookie; + uint32_t code; + uint32_t flags; + + uint32_t sender_pid; + uint32_t sender_euid; + + uint32_t data_size; + uint32_t offs_size; + void *data; + void *offs; +}; + +struct binder_io +{ + char *data; /* pointer to read/write from */ + uint32_t *offs; /* array of offsets */ + uint32_t data_avail; /* bytes available in data buffer */ + uint32_t offs_avail; /* entries available in offsets array */ + + char *data0; /* start of data buffer */ + uint32_t *offs0; /* start of offsets buffer */ + uint32_t flags; + uint32_t unused; +}; + +struct binder_death { + void (*func)(struct binder_state *bs, void *ptr); + void *ptr; +}; + +/* the one magic object */ +#define BINDER_SERVICE_MANAGER ((void*) 0) + +#define SVC_MGR_NAME "android.os.IServiceManager" + +enum { + SVC_MGR_GET_SERVICE = 1, + SVC_MGR_CHECK_SERVICE, + SVC_MGR_ADD_SERVICE, + SVC_MGR_LIST_SERVICES, +}; + +typedef int (*binder_handler)(struct binder_state *bs, + struct binder_txn *txn, + struct binder_io *msg, + struct binder_io *reply); + +struct binder_state *binder_open(unsigned mapsize); +void binder_close(struct binder_state *bs); + +/* initiate a blocking binder call + * - returns zero on success + */ +int binder_call(struct binder_state *bs, + struct binder_io *msg, struct binder_io *reply, + void *target, uint32_t code); + +/* release any state associate with the binder_io + * - call once any necessary data has been extracted from the + * binder_io after binder_call() returns + * - can safely be called even if binder_call() fails + */ +void binder_done(struct binder_state *bs, + struct binder_io *msg, struct binder_io *reply); + +/* manipulate strong references */ +void binder_acquire(struct binder_state *bs, void *ptr); +void binder_release(struct binder_state *bs, void *ptr); + +void binder_link_to_death(struct binder_state *bs, void *ptr, struct binder_death *death); + +void binder_loop(struct binder_state *bs, binder_handler func); + +int binder_become_context_manager(struct binder_state *bs); + +/* allocate a binder_io, providing a stack-allocated working + * buffer, size of the working buffer, and how many object + * offset entries to reserve from the buffer + */ +void bio_init(struct binder_io *bio, void *data, + uint32_t maxdata, uint32_t maxobjects); + +void bio_destroy(struct binder_io *bio); + +void bio_put_obj(struct binder_io *bio, void *ptr); +void bio_put_ref(struct binder_io *bio, void *ptr); +void bio_put_uint32(struct binder_io *bio, uint32_t n); +void bio_put_string16(struct binder_io *bio, const uint16_t *str); +void bio_put_string16_x(struct binder_io *bio, const char *_str); + +uint32_t bio_get_uint32(struct binder_io *bio); +uint16_t *bio_get_string16(struct binder_io *bio, uint32_t *sz); +void *bio_get_obj(struct binder_io *bio); +void *bio_get_ref(struct binder_io *bio); + +#endif diff --git a/cmds/servicemanager/service_manager.c b/cmds/servicemanager/service_manager.c new file mode 100644 index 0000000..3314dc3 --- /dev/null +++ b/cmds/servicemanager/service_manager.c @@ -0,0 +1,285 @@ +/* Copyright 2008 The Android Open Source Project + */ + +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> +#include <fcntl.h> + +#include <private/android_filesystem_config.h> + +#include "binder.h" + +#if 0 +#define ALOGI(x...) fprintf(stderr, "svcmgr: " x) +#define ALOGE(x...) fprintf(stderr, "svcmgr: " x) +#else +#define LOG_TAG "ServiceManager" +#include <cutils/log.h> +#endif + +/* TODO: + * These should come from a config file or perhaps be + * based on some namespace rules of some sort (media + * uid can register media.*, etc) + */ +static struct { + unsigned uid; + const char *name; +} allowed[] = { + { AID_MEDIA, "media.audio_flinger" }, + { AID_MEDIA, "media.player" }, + { AID_MEDIA, "media.camera" }, + { AID_MEDIA, "media.audio_policy" }, + { AID_DRM, "drm.drmManager" }, + { AID_NFC, "nfc" }, + { AID_BLUETOOTH, "bluetooth" }, + { AID_RADIO, "radio.phone" }, + { AID_RADIO, "radio.sms" }, + { AID_RADIO, "radio.phonesubinfo" }, + { AID_RADIO, "radio.simphonebook" }, +/* TODO: remove after phone services are updated: */ + { AID_RADIO, "phone" }, + { AID_RADIO, "sip" }, + { AID_RADIO, "isms" }, + { AID_RADIO, "iphonesubinfo" }, + { AID_RADIO, "simphonebook" }, + { AID_MEDIA, "common_time.clock" }, + { AID_MEDIA, "common_time.config" }, +}; + +void *svcmgr_handle; + +const char *str8(uint16_t *x) +{ + static char buf[128]; + unsigned max = 127; + char *p = buf; + + if (x) { + while (*x && max--) { + *p++ = *x++; + } + } + *p++ = 0; + return buf; +} + +int str16eq(uint16_t *a, const char *b) +{ + while (*a && *b) + if (*a++ != *b++) return 0; + if (*a || *b) + return 0; + return 1; +} + +int svc_can_register(unsigned uid, uint16_t *name) +{ + unsigned n; + + if ((uid == 0) || (uid == AID_SYSTEM)) + return 1; + + for (n = 0; n < sizeof(allowed) / sizeof(allowed[0]); n++) + if ((uid == allowed[n].uid) && str16eq(name, allowed[n].name)) + return 1; + + return 0; +} + +struct svcinfo +{ + struct svcinfo *next; + void *ptr; + struct binder_death death; + int allow_isolated; + unsigned len; + uint16_t name[0]; +}; + +struct svcinfo *svclist = 0; + +struct svcinfo *find_svc(uint16_t *s16, unsigned len) +{ + struct svcinfo *si; + + for (si = svclist; si; si = si->next) { + if ((len == si->len) && + !memcmp(s16, si->name, len * sizeof(uint16_t))) { + return si; + } + } + return 0; +} + +void svcinfo_death(struct binder_state *bs, void *ptr) +{ + struct svcinfo *si = ptr; + ALOGI("service '%s' died\n", str8(si->name)); + if (si->ptr) { + binder_release(bs, si->ptr); + si->ptr = 0; + } +} + +uint16_t svcmgr_id[] = { + 'a','n','d','r','o','i','d','.','o','s','.', + 'I','S','e','r','v','i','c','e','M','a','n','a','g','e','r' +}; + + +void *do_find_service(struct binder_state *bs, uint16_t *s, unsigned len, unsigned uid) +{ + struct svcinfo *si; + si = find_svc(s, len); + +// ALOGI("check_service('%s') ptr = %p\n", str8(s), si ? si->ptr : 0); + if (si && si->ptr) { + if (!si->allow_isolated) { + // If this service doesn't allow access from isolated processes, + // then check the uid to see if it is isolated. + unsigned appid = uid % AID_USER; + if (appid >= AID_ISOLATED_START && appid <= AID_ISOLATED_END) { + return 0; + } + } + return si->ptr; + } else { + return 0; + } +} + +int do_add_service(struct binder_state *bs, + uint16_t *s, unsigned len, + void *ptr, unsigned uid, int allow_isolated) +{ + struct svcinfo *si; + //ALOGI("add_service('%s',%p,%s) uid=%d\n", str8(s), ptr, + // allow_isolated ? "allow_isolated" : "!allow_isolated", uid); + + if (!ptr || (len == 0) || (len > 127)) + return -1; + + if (!svc_can_register(uid, s)) { + ALOGE("add_service('%s',%p) uid=%d - PERMISSION DENIED\n", + str8(s), ptr, uid); + return -1; + } + + si = find_svc(s, len); + if (si) { + if (si->ptr) { + ALOGE("add_service('%s',%p) uid=%d - ALREADY REGISTERED, OVERRIDE\n", + str8(s), ptr, uid); + svcinfo_death(bs, si); + } + si->ptr = ptr; + } else { + si = malloc(sizeof(*si) + (len + 1) * sizeof(uint16_t)); + if (!si) { + ALOGE("add_service('%s',%p) uid=%d - OUT OF MEMORY\n", + str8(s), ptr, uid); + return -1; + } + si->ptr = ptr; + si->len = len; + memcpy(si->name, s, (len + 1) * sizeof(uint16_t)); + si->name[len] = '\0'; + si->death.func = svcinfo_death; + si->death.ptr = si; + si->allow_isolated = allow_isolated; + si->next = svclist; + svclist = si; + } + + binder_acquire(bs, ptr); + binder_link_to_death(bs, ptr, &si->death); + return 0; +} + +int svcmgr_handler(struct binder_state *bs, + struct binder_txn *txn, + struct binder_io *msg, + struct binder_io *reply) +{ + struct svcinfo *si; + uint16_t *s; + unsigned len; + void *ptr; + uint32_t strict_policy; + int allow_isolated; + +// ALOGI("target=%p code=%d pid=%d uid=%d\n", +// txn->target, txn->code, txn->sender_pid, txn->sender_euid); + + if (txn->target != svcmgr_handle) + return -1; + + // Equivalent to Parcel::enforceInterface(), reading the RPC + // header with the strict mode policy mask and the interface name. + // Note that we ignore the strict_policy and don't propagate it + // further (since we do no outbound RPCs anyway). + strict_policy = bio_get_uint32(msg); + s = bio_get_string16(msg, &len); + if ((len != (sizeof(svcmgr_id) / 2)) || + memcmp(svcmgr_id, s, sizeof(svcmgr_id))) { + fprintf(stderr,"invalid id %s\n", str8(s)); + return -1; + } + + switch(txn->code) { + case SVC_MGR_GET_SERVICE: + case SVC_MGR_CHECK_SERVICE: + s = bio_get_string16(msg, &len); + ptr = do_find_service(bs, s, len, txn->sender_euid); + if (!ptr) + break; + bio_put_ref(reply, ptr); + return 0; + + case SVC_MGR_ADD_SERVICE: + s = bio_get_string16(msg, &len); + ptr = bio_get_ref(msg); + allow_isolated = bio_get_uint32(msg) ? 1 : 0; + if (do_add_service(bs, s, len, ptr, txn->sender_euid, allow_isolated)) + return -1; + break; + + case SVC_MGR_LIST_SERVICES: { + unsigned n = bio_get_uint32(msg); + + si = svclist; + while ((n-- > 0) && si) + si = si->next; + if (si) { + bio_put_string16(reply, si->name); + return 0; + } + return -1; + } + default: + ALOGE("unknown code %d\n", txn->code); + return -1; + } + + bio_put_uint32(reply, 0); + return 0; +} + +int main(int argc, char **argv) +{ + struct binder_state *bs; + void *svcmgr = BINDER_SERVICE_MANAGER; + + bs = binder_open(128*1024); + + if (binder_become_context_manager(bs)) { + ALOGE("cannot become context manager (%s)\n", strerror(errno)); + return -1; + } + + svcmgr_handle = svcmgr; + binder_loop(bs, svcmgr_handler); + return 0; +} diff --git a/cmds/system_server/Android.mk b/cmds/system_server/Android.mk new file mode 100644 index 0000000..ad53797 --- /dev/null +++ b/cmds/system_server/Android.mk @@ -0,0 +1,20 @@ +LOCAL_PATH:= $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES:= \ + system_main.cpp + +LOCAL_SHARED_LIBRARIES := \ + libutils \ + libbinder \ + libsystem_server + +LOCAL_C_INCLUDES := \ + $(JNI_H_INCLUDE) + +LOCAL_MODULE:= system_server + +include $(BUILD_EXECUTABLE) + +include $(LOCAL_PATH)/library/Android.mk + diff --git a/cmds/system_server/MODULE_LICENSE_APACHE2 b/cmds/system_server/MODULE_LICENSE_APACHE2 new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/cmds/system_server/MODULE_LICENSE_APACHE2 diff --git a/cmds/system_server/NOTICE b/cmds/system_server/NOTICE new file mode 100644 index 0000000..c5b1efa --- /dev/null +++ b/cmds/system_server/NOTICE @@ -0,0 +1,190 @@ + + Copyright (c) 2005-2008, The Android Open Source Project + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + diff --git a/cmds/system_server/library/Android.mk b/cmds/system_server/library/Android.mk new file mode 100644 index 0000000..c42424c --- /dev/null +++ b/cmds/system_server/library/Android.mk @@ -0,0 +1,26 @@ +LOCAL_PATH:= $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES:= \ + system_init.cpp + +base = $(LOCAL_PATH)/../../.. +native = $(LOCAL_PATH)/../../../../native + +LOCAL_C_INCLUDES := \ + $(native)/services/sensorservice \ + $(native)/services/surfaceflinger \ + $(JNI_H_INCLUDE) + +LOCAL_SHARED_LIBRARIES := \ + libandroid_runtime \ + libsensorservice \ + libsurfaceflinger \ + libinput \ + libutils \ + libbinder \ + libcutils + +LOCAL_MODULE:= libsystem_server + +include $(BUILD_SHARED_LIBRARY) diff --git a/cmds/system_server/library/system_init.cpp b/cmds/system_server/library/system_init.cpp new file mode 100644 index 0000000..745c34a --- /dev/null +++ b/cmds/system_server/library/system_init.cpp @@ -0,0 +1,105 @@ +/* + * System server main initialization. + * + * The system server is responsible for becoming the Binder + * context manager, supplying the root ServiceManager object + * through which other services can be found. + */ + +#define LOG_TAG "sysproc" + +#include <binder/IPCThreadState.h> +#include <binder/ProcessState.h> +#include <binder/IServiceManager.h> +#include <utils/TextOutput.h> +#include <utils/Log.h> + +#include <SurfaceFlinger.h> +#include <SensorService.h> + +#include <android_runtime/AndroidRuntime.h> + +#include <signal.h> +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <sys/time.h> +#include <cutils/properties.h> + +using namespace android; + +namespace android { +/** + * This class is used to kill this process when the runtime dies. + */ +class GrimReaper : public IBinder::DeathRecipient { +public: + GrimReaper() { } + + virtual void binderDied(const wp<IBinder>& who) + { + ALOGI("Grim Reaper killing system_server..."); + kill(getpid(), SIGKILL); + } +}; + +} // namespace android + + + +extern "C" status_t system_init() +{ + ALOGI("Entered system_init()"); + + sp<ProcessState> proc(ProcessState::self()); + + sp<IServiceManager> sm = defaultServiceManager(); + ALOGI("ServiceManager: %p\n", sm.get()); + + sp<GrimReaper> grim = new GrimReaper(); + sm->asBinder()->linkToDeath(grim, grim.get(), 0); + + char propBuf[PROPERTY_VALUE_MAX]; + property_get("system_init.startsurfaceflinger", propBuf, "1"); + if (strcmp(propBuf, "1") == 0) { + // Start the SurfaceFlinger + SurfaceFlinger::instantiate(); + } + + property_get("system_init.startsensorservice", propBuf, "1"); + if (strcmp(propBuf, "1") == 0) { + // Start the sensor service + SensorService::instantiate(); + } + + // And now start the Android runtime. We have to do this bit + // of nastiness because the Android runtime initialization requires + // some of the core system services to already be started. + // All other servers should just start the Android runtime at + // the beginning of their processes's main(), before calling + // the init function. + ALOGI("System server: starting Android runtime.\n"); + AndroidRuntime* runtime = AndroidRuntime::getRuntime(); + + ALOGI("System server: starting Android services.\n"); + JNIEnv* env = runtime->getJNIEnv(); + if (env == NULL) { + return UNKNOWN_ERROR; + } + jclass clazz = env->FindClass("com/android/server/SystemServer"); + if (clazz == NULL) { + return UNKNOWN_ERROR; + } + jmethodID methodId = env->GetStaticMethodID(clazz, "init2", "()V"); + if (methodId == NULL) { + return UNKNOWN_ERROR; + } + env->CallStaticVoidMethod(clazz, methodId); + + ALOGI("System server: entering thread pool.\n"); + ProcessState::self()->startThreadPool(); + IPCThreadState::self()->joinThreadPool(); + ALOGI("System server: exiting thread pool.\n"); + + return NO_ERROR; +} diff --git a/cmds/system_server/system_main.cpp b/cmds/system_server/system_main.cpp new file mode 100644 index 0000000..ddff065 --- /dev/null +++ b/cmds/system_server/system_main.cpp @@ -0,0 +1,56 @@ +/* + * Main entry of system server process. + * + * Calls the standard system initialization function, and then + * puts the main thread into the thread pool so it can handle + * incoming transactions. + * + */ + +#define LOG_TAG "sysproc" + +#include <binder/IPCThreadState.h> +#include <utils/Log.h> + +#include <private/android_filesystem_config.h> + +#include <sys/time.h> +#include <sys/resource.h> + +#include <signal.h> +#include <stdio.h> +#include <unistd.h> + +using namespace android; + +extern "C" status_t system_init(); + +bool finish_system_init() +{ + return true; +} + +static void blockSignals() +{ + sigset_t mask; + int cc; + + sigemptyset(&mask); + sigaddset(&mask, SIGQUIT); + sigaddset(&mask, SIGUSR1); + cc = sigprocmask(SIG_BLOCK, &mask, NULL); + assert(cc == 0); +} + +int main(int argc, const char* const argv[]) +{ + ALOGI("System server is starting with pid=%d.\n", getpid()); + + blockSignals(); + + // You can trust me, honestly! + ALOGW("*** Current priority: %d\n", getpriority(PRIO_PROCESS, 0)); + setpriority(PRIO_PROCESS, 0, -1); + + system_init(); +} |