diff options
Diffstat (limited to 'cmds/servicemanager/service_manager.c')
-rw-r--r-- | cmds/servicemanager/service_manager.c | 287 |
1 files changed, 0 insertions, 287 deletions
diff --git a/cmds/servicemanager/service_manager.c b/cmds/servicemanager/service_manager.c deleted file mode 100644 index c563a82..0000000 --- a/cmds/servicemanager/service_manager.c +++ /dev/null @@ -1,287 +0,0 @@ -/* 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_MEDIA, "android.media.IAAHMetaDataService" }, - { 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" }, - { AID_KEYSTORE, "android.security.keystore" }, -}; - -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; -} |