diff options
Diffstat (limited to 'libc/bionic/stubs.c')
-rw-r--r-- | libc/bionic/stubs.c | 380 |
1 files changed, 0 insertions, 380 deletions
diff --git a/libc/bionic/stubs.c b/libc/bionic/stubs.c deleted file mode 100644 index 365f21a..0000000 --- a/libc/bionic/stubs.c +++ /dev/null @@ -1,380 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ -#include <grp.h> -#include <stdio.h> -#include <unistd.h> -#include <pwd.h> -#include <netdb.h> -#include <mntent.h> -#include <private/android_filesystem_config.h> -#include <pthread.h> -#include <stdlib.h> -#include <errno.h> -#include <ctype.h> - -/** Thread-specific state for the stubs functions - **/ - -pthread_once_t the_once = PTHREAD_ONCE_INIT; -pthread_key_t the_key; - -typedef struct { - struct passwd passwd; - struct group group; - char* group_members[2]; - char app_name_buffer[32]; - char group_name_buffer[32]; -} stubs_state_t; - -static void -stubs_state_free( void* _s ) -{ - stubs_state_t* s = _s; - free(s); -} - -static stubs_state_t* -stubs_state_alloc( void ) -{ - stubs_state_t* s = calloc(1, sizeof *s); - - if (s != NULL) { - s->group.gr_mem = s->group_members; - } - return s; -} - -static void __stubs_key_init(void) -{ - pthread_key_create( &the_key, stubs_state_free ); -} - -static stubs_state_t* -__stubs_state(void) -{ - stubs_state_t* s; - - pthread_once(&the_once, __stubs_key_init); - s = pthread_getspecific(the_key); - if (s == NULL) { - s = stubs_state_alloc(); - if (s == NULL) { - errno = ENOMEM; /* just in case */ - } else { - if ( pthread_setspecific(the_key, s) != 0 ) { - stubs_state_free(s); - errno = ENOMEM; - s = NULL; - } - } - } - return s; -} - -static struct passwd* -android_iinfo_to_passwd( struct passwd *pw, - struct android_id_info *iinfo ) -{ - pw->pw_name = (char*)iinfo->name; - pw->pw_uid = iinfo->aid; - pw->pw_gid = iinfo->aid; - pw->pw_dir = "/"; - pw->pw_shell = "/system/bin/sh"; - return pw; -} - -static struct group* -android_iinfo_to_group( struct group *gr, - struct android_id_info *iinfo ) -{ - gr->gr_name = (char*) iinfo->name; - gr->gr_gid = iinfo->aid; - gr->gr_mem[0] = gr->gr_name; - gr->gr_mem[1] = NULL; - return gr; -} - -static struct passwd * -android_id_to_passwd( struct passwd *pw, unsigned id) -{ - struct android_id_info *iinfo = android_ids; - unsigned n; - for (n = 0; n < android_id_count; n++) { - if (iinfo[n].aid == id) { - return android_iinfo_to_passwd(pw, iinfo + n); - } - } - return NULL; -} - -static struct passwd* -android_name_to_passwd(struct passwd *pw, const char *name) -{ - struct android_id_info *iinfo = android_ids; - unsigned n; - for (n = 0; n < android_id_count; n++) { - if (!strcmp(iinfo[n].name, name)) { - return android_iinfo_to_passwd(pw, iinfo + n); - } - } - return NULL; -} - -static struct group* -android_id_to_group( struct group *gr, unsigned id ) -{ - struct android_id_info *iinfo = android_ids; - unsigned n; - for (n = 0; n < android_id_count; n++) { - if (iinfo[n].aid == id) { - return android_iinfo_to_group(gr, iinfo + n); - } - } - return NULL; -} - -static struct group* -android_name_to_group( struct group *gr, const char *name ) -{ - struct android_id_info *iinfo = android_ids; - unsigned n; - for (n = 0; n < android_id_count; n++) { - if (!strcmp(iinfo[n].name, name)) { - return android_iinfo_to_group(gr, iinfo + n); - } - } - return NULL; -} - -/* translate a user/group name like app_1234 into the - * corresponding user/group id (AID_APP + 1234) - * returns 0 and sets errno to ENOENT in case of error - */ -static unsigned -app_id_from_name( const char* name ) -{ - unsigned long id; - char* end; - - if (memcmp(name, "app_", 4) != 0 || !isdigit(name[4])) - goto FAIL; - - id = strtoul(name+4, &end, 10); - if (id == 0 || *end != '\0') - goto FAIL; - - id += AID_APP; - - /* check for overflow and that the value can be - * stored in our 32-bit uid_t/gid_t */ - if (id < AID_APP || (unsigned)id != id) - goto FAIL; - - return (unsigned)id; - -FAIL: - errno = ENOENT; - return 0; -} - -/* translate a uid into the corresponding app_<uid> - * passwd structure (sets errno to ENOENT on failure) - */ -static struct passwd* -app_id_to_passwd(uid_t uid, stubs_state_t* state) -{ - struct passwd* pw = &state->passwd; - - if (uid < AID_APP) { - errno = ENOENT; - return NULL; - } - - snprintf( state->app_name_buffer, sizeof state->app_name_buffer, - "app_%u", uid - AID_APP ); - - pw->pw_name = state->app_name_buffer; - pw->pw_dir = "/data"; - pw->pw_shell = "/system/bin/sh"; - pw->pw_uid = uid; - pw->pw_gid = uid; - - return pw; -} - -/* translate a gid into the corresponding app_<gid> - * group structure (sets errno to ENOENT on failure) - */ -static struct group* -app_id_to_group(gid_t gid, stubs_state_t* state) -{ - struct group* gr = &state->group; - - if (gid < AID_APP) { - errno = ENOENT; - return NULL; - } - - snprintf(state->group_name_buffer, sizeof state->group_name_buffer, - "app_%u", gid - AID_APP); - - gr->gr_name = state->group_name_buffer; - gr->gr_gid = gid; - gr->gr_mem[0] = gr->gr_name; - gr->gr_mem[1] = NULL; - - return gr; -} - - -struct passwd* -getpwuid(uid_t uid) -{ - stubs_state_t* state = __stubs_state(); - struct passwd* pw; - - if (state == NULL) - return NULL; - - pw = &state->passwd; - - if ( android_id_to_passwd(pw, uid) != NULL ) - return pw; - - return app_id_to_passwd(uid, state); -} - -struct passwd* -getpwnam(const char *login) -{ - stubs_state_t* state = __stubs_state(); - - if (state == NULL) - return NULL; - - if (android_name_to_passwd(&state->passwd, login) != NULL) - return &state->passwd; - - return app_id_to_passwd( app_id_from_name(login), state ); -} - -int -getgrouplist (const char *user, gid_t group, - gid_t *groups, int *ngroups) -{ - if (*ngroups < 1) { - *ngroups = 1; - return -1; - } - groups[0] = group; - return (*ngroups = 1); -} - -char* -getlogin(void) -{ - struct passwd *pw = getpwuid(getuid()); - - if(pw) { - return pw->pw_name; - } else { - return NULL; - } -} - -struct group* -getgrgid(gid_t gid) -{ - stubs_state_t* state = __stubs_state(); - struct group* gr; - - if (state == NULL) - return NULL; - - gr = android_id_to_group(&state->group, gid); - if (gr != NULL) - return gr; - - return app_id_to_group(gid, state); -} - -struct group* -getgrnam(const char *name) -{ - stubs_state_t* state = __stubs_state(); - unsigned id; - - if (state == NULL) - return NULL; - - if (android_name_to_group(&state->group, name) != 0) - return &state->group; - - return app_id_to_group( app_id_from_name(name), state ); -} - - -struct netent* getnetbyname(const char *name) -{ - fprintf(stderr, "FIX ME! implement getgrnam() %s:%d\n", __FILE__, __LINE__); - return NULL; -} - -void endpwent(void) -{ -} - -struct mntent* getmntent(FILE* f) -{ - fprintf(stderr, "FIX ME! implement getmntent() %s:%d\n", __FILE__, __LINE__); - return NULL; -} - -char* ttyname(int fd) -{ - fprintf(stderr, "FIX ME! implement ttyname() %s:%d\n", __FILE__, __LINE__); - return NULL; -} - -struct netent *getnetbyaddr(uint32_t net, int type) -{ - fprintf(stderr, "FIX ME! implement %s() %s:%d\n", __FUNCTION__, __FILE__, __LINE__); - return NULL; -} - -struct protoent *getprotobyname(const char *name) -{ - fprintf(stderr, "FIX ME! implement %s() %s:%d\n", __FUNCTION__, __FILE__, __LINE__); - return NULL; -} - -struct protoent *getprotobynumber(int proto) -{ - fprintf(stderr, "FIX ME! implement %s() %s:%d\n", __FUNCTION__, __FILE__, __LINE__); - return NULL; -} |