Move non-Java commands over from frameworks/base

Change-Id: I0571813c1cfcf66abd36eb9f178fc49b618e88a6
Signed-off-by: Mike Lockwood <lockwood@google.com>

1 files changed, 285 insertions, 0 deletions

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;
+}