diff options
Diffstat (limited to 'minadbd/adb.c')
| -rw-r--r-- | minadbd/adb.c | 757 |
1 files changed, 10 insertions, 747 deletions
diff --git a/minadbd/adb.c b/minadbd/adb.c index d1e97b31f..0e8fd2a7e 100644 --- a/minadbd/adb.c +++ b/minadbd/adb.c @@ -28,13 +28,9 @@ #include "sysdeps.h" #include "adb.h" -#if !ADB_HOST #include <private/android_filesystem_config.h> #include <linux/capability.h> #include <linux/prctl.h> -#else -#include "usb_vendors.h" -#endif #if ADB_TRACE ADB_MUTEX_DEFINE( D_lock ); @@ -228,29 +224,6 @@ static void send_connect(atransport *t) HOST ? "host" : adb_device_banner); cp->msg.data_length = strlen((char*) cp->data) + 1; send_packet(cp, t); -#if ADB_HOST - /* XXX why sleep here? */ - // allow the device some time to respond to the connect message - adb_sleep_ms(1000); -#endif -} - -static char *connection_state_name(atransport *t) -{ - if (t == NULL) { - return "unknown"; - } - - switch(t->connection_state) { - case CS_BOOTLOADER: - return "bootloader"; - case CS_DEVICE: - return "device"; - case CS_OFFLINE: - return "offline"; - default: - return "unknown"; - } } void parse_banner(char *banner, atransport *t) @@ -400,448 +373,11 @@ void handle_packet(apacket *p, atransport *t) put_apacket(p); } -alistener listener_list = { - .next = &listener_list, - .prev = &listener_list, -}; - -static void ss_listener_event_func(int _fd, unsigned ev, void *_l) -{ - asocket *s; - - if(ev & FDE_READ) { - struct sockaddr addr; - socklen_t alen; - int fd; - - alen = sizeof(addr); - fd = adb_socket_accept(_fd, &addr, &alen); - if(fd < 0) return; - - adb_socket_setbufsize(fd, CHUNK_SIZE); - - s = create_local_socket(fd); - if(s) { - connect_to_smartsocket(s); - return; - } - - adb_close(fd); - } -} - -static void listener_event_func(int _fd, unsigned ev, void *_l) -{ - alistener *l = _l; - asocket *s; - - if(ev & FDE_READ) { - struct sockaddr addr; - socklen_t alen; - int fd; - - alen = sizeof(addr); - fd = adb_socket_accept(_fd, &addr, &alen); - if(fd < 0) return; - - s = create_local_socket(fd); - if(s) { - s->transport = l->transport; - connect_to_remote(s, l->connect_to); - return; - } - - adb_close(fd); - } -} - -static void free_listener(alistener* l) -{ - if (l->next) { - l->next->prev = l->prev; - l->prev->next = l->next; - l->next = l->prev = l; - } - - // closes the corresponding fd - fdevent_remove(&l->fde); - - if (l->local_name) - free((char*)l->local_name); - - if (l->connect_to) - free((char*)l->connect_to); - - if (l->transport) { - remove_transport_disconnect(l->transport, &l->disconnect); - } - free(l); -} - -static void listener_disconnect(void* _l, atransport* t) -{ - alistener* l = _l; - - free_listener(l); -} - -int local_name_to_fd(const char *name) -{ - int port; - - if(!strncmp("tcp:", name, 4)){ - int ret; - port = atoi(name + 4); - ret = socket_loopback_server(port, SOCK_STREAM); - return ret; - } -#ifndef HAVE_WIN32_IPC /* no Unix-domain sockets on Win32 */ - // It's non-sensical to support the "reserved" space on the adb host side - if(!strncmp(name, "local:", 6)) { - return socket_local_server(name + 6, - ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); - } else if(!strncmp(name, "localabstract:", 14)) { - return socket_local_server(name + 14, - ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); - } else if(!strncmp(name, "localfilesystem:", 16)) { - return socket_local_server(name + 16, - ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM); - } - -#endif - printf("unknown local portname '%s'\n", name); - return -1; -} - -static int remove_listener(const char *local_name, const char *connect_to, atransport* transport) -{ - alistener *l; - - for (l = listener_list.next; l != &listener_list; l = l->next) { - if (!strcmp(local_name, l->local_name) && - !strcmp(connect_to, l->connect_to) && - l->transport && l->transport == transport) { - - listener_disconnect(l, transport); - return 0; - } - } - - return -1; -} - -static int install_listener(const char *local_name, const char *connect_to, atransport* transport) -{ - alistener *l; - - //printf("install_listener('%s','%s')\n", local_name, connect_to); - - for(l = listener_list.next; l != &listener_list; l = l->next){ - if(strcmp(local_name, l->local_name) == 0) { - char *cto; - - /* can't repurpose a smartsocket */ - if(l->connect_to[0] == '*') { - return -1; - } - - cto = strdup(connect_to); - if(cto == 0) { - return -1; - } - - //printf("rebinding '%s' to '%s'\n", local_name, connect_to); - free((void*) l->connect_to); - l->connect_to = cto; - if (l->transport != transport) { - remove_transport_disconnect(l->transport, &l->disconnect); - l->transport = transport; - add_transport_disconnect(l->transport, &l->disconnect); - } - return 0; - } - } - - if((l = calloc(1, sizeof(alistener))) == 0) goto nomem; - if((l->local_name = strdup(local_name)) == 0) goto nomem; - if((l->connect_to = strdup(connect_to)) == 0) goto nomem; - - - l->fd = local_name_to_fd(local_name); - if(l->fd < 0) { - free((void*) l->local_name); - free((void*) l->connect_to); - free(l); - printf("cannot bind '%s'\n", local_name); - return -2; - } - - close_on_exec(l->fd); - if(!strcmp(l->connect_to, "*smartsocket*")) { - fdevent_install(&l->fde, l->fd, ss_listener_event_func, l); - } else { - fdevent_install(&l->fde, l->fd, listener_event_func, l); - } - fdevent_set(&l->fde, FDE_READ); - - l->next = &listener_list; - l->prev = listener_list.prev; - l->next->prev = l; - l->prev->next = l; - l->transport = transport; - - if (transport) { - l->disconnect.opaque = l; - l->disconnect.func = listener_disconnect; - add_transport_disconnect(transport, &l->disconnect); - } - return 0; - -nomem: - fatal("cannot allocate listener"); - return 0; -} - -#ifdef HAVE_WIN32_PROC -static BOOL WINAPI ctrlc_handler(DWORD type) -{ - exit(STATUS_CONTROL_C_EXIT); - return TRUE; -} -#endif - static void adb_cleanup(void) { usb_cleanup(); } -void start_logging(void) -{ -#ifdef HAVE_WIN32_PROC - char temp[ MAX_PATH ]; - FILE* fnul; - FILE* flog; - - GetTempPath( sizeof(temp) - 8, temp ); - strcat( temp, "adb.log" ); - - /* Win32 specific redirections */ - fnul = fopen( "NUL", "rt" ); - if (fnul != NULL) - stdin[0] = fnul[0]; - - flog = fopen( temp, "at" ); - if (flog == NULL) - flog = fnul; - - setvbuf( flog, NULL, _IONBF, 0 ); - - stdout[0] = flog[0]; - stderr[0] = flog[0]; - fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid()); -#else - int fd; - - fd = unix_open("/dev/null", O_RDONLY); - dup2(fd, 0); - adb_close(fd); - - fd = unix_open("/tmp/adb.log", O_WRONLY | O_CREAT | O_APPEND, 0640); - if(fd < 0) { - fd = unix_open("/dev/null", O_WRONLY); - } - dup2(fd, 1); - dup2(fd, 2); - adb_close(fd); - fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid()); -#endif -} - -#if !ADB_HOST -void start_device_log(void) -{ - int fd; - char path[PATH_MAX]; - struct tm now; - time_t t; - char value[PROPERTY_VALUE_MAX]; - - // read the trace mask from persistent property persist.adb.trace_mask - // give up if the property is not set or cannot be parsed - property_get("persist.adb.trace_mask", value, ""); - if (sscanf(value, "%x", &adb_trace_mask) != 1) - return; - - adb_mkdir("/data/adb", 0775); - tzset(); - time(&t); - localtime_r(&t, &now); - strftime(path, sizeof(path), - "/data/adb/adb-%Y-%m-%d-%H-%M-%S.txt", - &now); - fd = unix_open(path, O_WRONLY | O_CREAT | O_TRUNC, 0640); - if (fd < 0) - return; - - // redirect stdout and stderr to the log file - dup2(fd, 1); - dup2(fd, 2); - fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid()); - adb_close(fd); - - fd = unix_open("/dev/null", O_RDONLY); - dup2(fd, 0); - adb_close(fd); -} -#endif - -#if ADB_HOST -int launch_server(int server_port) -{ -#ifdef HAVE_WIN32_PROC - /* we need to start the server in the background */ - /* we create a PIPE that will be used to wait for the server's "OK" */ - /* message since the pipe handles must be inheritable, we use a */ - /* security attribute */ - HANDLE pipe_read, pipe_write; - SECURITY_ATTRIBUTES sa; - STARTUPINFO startup; - PROCESS_INFORMATION pinfo; - char program_path[ MAX_PATH ]; - int ret; - - sa.nLength = sizeof(sa); - sa.lpSecurityDescriptor = NULL; - sa.bInheritHandle = TRUE; - - /* create pipe, and ensure its read handle isn't inheritable */ - ret = CreatePipe( &pipe_read, &pipe_write, &sa, 0 ); - if (!ret) { - fprintf(stderr, "CreatePipe() failure, error %ld\n", GetLastError() ); - return -1; - } - - SetHandleInformation( pipe_read, HANDLE_FLAG_INHERIT, 0 ); - - ZeroMemory( &startup, sizeof(startup) ); - startup.cb = sizeof(startup); - startup.hStdInput = GetStdHandle( STD_INPUT_HANDLE ); - startup.hStdOutput = pipe_write; - startup.hStdError = GetStdHandle( STD_ERROR_HANDLE ); - startup.dwFlags = STARTF_USESTDHANDLES; - - ZeroMemory( &pinfo, sizeof(pinfo) ); - - /* get path of current program */ - GetModuleFileName( NULL, program_path, sizeof(program_path) ); - - ret = CreateProcess( - program_path, /* program path */ - "adb fork-server server", - /* the fork-server argument will set the - debug = 2 in the child */ - NULL, /* process handle is not inheritable */ - NULL, /* thread handle is not inheritable */ - TRUE, /* yes, inherit some handles */ - DETACHED_PROCESS, /* the new process doesn't have a console */ - NULL, /* use parent's environment block */ - NULL, /* use parent's starting directory */ - &startup, /* startup info, i.e. std handles */ - &pinfo ); - - CloseHandle( pipe_write ); - - if (!ret) { - fprintf(stderr, "CreateProcess failure, error %ld\n", GetLastError() ); - CloseHandle( pipe_read ); - return -1; - } - - CloseHandle( pinfo.hProcess ); - CloseHandle( pinfo.hThread ); - - /* wait for the "OK\n" message */ - { - char temp[3]; - DWORD count; - - ret = ReadFile( pipe_read, temp, 3, &count, NULL ); - CloseHandle( pipe_read ); - if ( !ret ) { - fprintf(stderr, "could not read ok from ADB Server, error = %ld\n", GetLastError() ); - return -1; - } - if (count != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') { - fprintf(stderr, "ADB server didn't ACK\n" ); - return -1; - } - } -#elif defined(HAVE_FORKEXEC) - char path[PATH_MAX]; - int fd[2]; - - // set up a pipe so the child can tell us when it is ready. - // fd[0] will be parent's end, and fd[1] will get mapped to stderr in the child. - if (pipe(fd)) { - fprintf(stderr, "pipe failed in launch_server, errno: %d\n", errno); - return -1; - } - get_my_path(path, PATH_MAX); - pid_t pid = fork(); - if(pid < 0) return -1; - - if (pid == 0) { - // child side of the fork - - // redirect stderr to the pipe - // we use stderr instead of stdout due to stdout's buffering behavior. - adb_close(fd[0]); - dup2(fd[1], STDERR_FILENO); - adb_close(fd[1]); - - // child process - int result = execl(path, "adb", "fork-server", "server", NULL); - // this should not return - fprintf(stderr, "OOPS! execl returned %d, errno: %d\n", result, errno); - } else { - // parent side of the fork - - char temp[3]; - - temp[0] = 'A'; temp[1] = 'B'; temp[2] = 'C'; - // wait for the "OK\n" message - adb_close(fd[1]); - int ret = adb_read(fd[0], temp, 3); - int saved_errno = errno; - adb_close(fd[0]); - if (ret < 0) { - fprintf(stderr, "could not read ok from ADB Server, errno = %d\n", saved_errno); - return -1; - } - if (ret != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') { - fprintf(stderr, "ADB server didn't ACK\n" ); - return -1; - } - - setsid(); - } -#else -#error "cannot implement background server start on this platform" -#endif - return 0; -} -#endif - -/* Constructs a local name of form tcp:port. - * target_str points to the target string, it's content will be overwritten. - * target_size is the capacity of the target string. - * server_port is the port number to use for the local name. - */ -void build_local_name(char* target_str, size_t target_size, int server_port) -{ - snprintf(target_str, target_size, "tcp:%d", server_port); -} - int adb_main() { atexit(adb_cleanup); @@ -858,6 +394,16 @@ int adb_main() usb_init(); } + if (setgid(AID_SHELL) != 0) { + fprintf(stderr, "failed to setgid to shell\n"); + exit(1); + } + if (setuid(AID_SHELL) != 0) { + fprintf(stderr, "failed to setuid to shell\n"); + exit(1); + } + fprintf(stderr, "userid is %d\n", getuid()); + D("Event loop starting\n"); fdevent_loop(); @@ -866,286 +412,3 @@ int adb_main() return 0; } - -#if ADB_HOST -void connect_device(char* host, char* buffer, int buffer_size) -{ - int port, fd; - char* portstr = strchr(host, ':'); - char hostbuf[100]; - char serial[100]; - - strncpy(hostbuf, host, sizeof(hostbuf) - 1); - if (portstr) { - if (portstr - host >= sizeof(hostbuf)) { - snprintf(buffer, buffer_size, "bad host name %s", host); - return; - } - // zero terminate the host at the point we found the colon - hostbuf[portstr - host] = 0; - if (sscanf(portstr + 1, "%d", &port) == 0) { - snprintf(buffer, buffer_size, "bad port number %s", portstr); - return; - } - } else { - port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT; - } - - snprintf(serial, sizeof(serial), "%s:%d", hostbuf, port); - if (find_transport(serial)) { - snprintf(buffer, buffer_size, "already connected to %s", serial); - return; - } - - fd = socket_network_client(hostbuf, port, SOCK_STREAM); - if (fd < 0) { - snprintf(buffer, buffer_size, "unable to connect to %s:%d", host, port); - return; - } - - D("client: connected on remote on fd %d\n", fd); - close_on_exec(fd); - disable_tcp_nagle(fd); - register_socket_transport(fd, serial, port, 0); - snprintf(buffer, buffer_size, "connected to %s", serial); -} - -void connect_emulator(char* port_spec, char* buffer, int buffer_size) -{ - char* port_separator = strchr(port_spec, ','); - if (!port_separator) { - snprintf(buffer, buffer_size, - "unable to parse '%s' as <console port>,<adb port>", - port_spec); - return; - } - - // Zero-terminate console port and make port_separator point to 2nd port. - *port_separator++ = 0; - int console_port = strtol(port_spec, NULL, 0); - int adb_port = strtol(port_separator, NULL, 0); - if (!(console_port > 0 && adb_port > 0)) { - *(port_separator - 1) = ','; - snprintf(buffer, buffer_size, - "Invalid port numbers: Expected positive numbers, got '%s'", - port_spec); - return; - } - - /* Check if the emulator is already known. - * Note: There's a small but harmless race condition here: An emulator not - * present just yet could be registered by another invocation right - * after doing this check here. However, local_connect protects - * against double-registration too. From here, a better error message - * can be produced. In the case of the race condition, the very specific - * error message won't be shown, but the data doesn't get corrupted. */ - atransport* known_emulator = find_emulator_transport_by_adb_port(adb_port); - if (known_emulator != NULL) { - snprintf(buffer, buffer_size, - "Emulator on port %d already registered.", adb_port); - return; - } - - /* Check if more emulators can be registered. Similar unproblematic - * race condition as above. */ - int candidate_slot = get_available_local_transport_index(); - if (candidate_slot < 0) { - snprintf(buffer, buffer_size, "Cannot accept more emulators."); - return; - } - - /* Preconditions met, try to connect to the emulator. */ - if (!local_connect_arbitrary_ports(console_port, adb_port)) { - snprintf(buffer, buffer_size, - "Connected to emulator on ports %d,%d", console_port, adb_port); - } else { - snprintf(buffer, buffer_size, - "Could not connect to emulator on ports %d,%d", - console_port, adb_port); - } -} -#endif - -int handle_host_request(char *service, transport_type ttype, char* serial, int reply_fd, asocket *s) -{ - atransport *transport = NULL; - char buf[4096]; - - if(!strcmp(service, "kill")) { - fprintf(stderr,"adb server killed by remote request\n"); - fflush(stdout); - adb_write(reply_fd, "OKAY", 4); - usb_cleanup(); - exit(0); - } - -#if ADB_HOST - // "transport:" is used for switching transport with a specified serial number - // "transport-usb:" is used for switching transport to the only USB transport - // "transport-local:" is used for switching transport to the only local transport - // "transport-any:" is used for switching transport to the only transport - if (!strncmp(service, "transport", strlen("transport"))) { - char* error_string = "unknown failure"; - transport_type type = kTransportAny; - - if (!strncmp(service, "transport-usb", strlen("transport-usb"))) { - type = kTransportUsb; - } else if (!strncmp(service, "transport-local", strlen("transport-local"))) { - type = kTransportLocal; - } else if (!strncmp(service, "transport-any", strlen("transport-any"))) { - type = kTransportAny; - } else if (!strncmp(service, "transport:", strlen("transport:"))) { - service += strlen("transport:"); - serial = service; - } - - transport = acquire_one_transport(CS_ANY, type, serial, &error_string); - - if (transport) { - s->transport = transport; - adb_write(reply_fd, "OKAY", 4); - } else { - sendfailmsg(reply_fd, error_string); - } - return 1; - } - - // return a list of all connected devices - if (!strcmp(service, "devices")) { - char buffer[4096]; - memset(buf, 0, sizeof(buf)); - memset(buffer, 0, sizeof(buffer)); - D("Getting device list \n"); - list_transports(buffer, sizeof(buffer)); - snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer),buffer); - D("Wrote device list \n"); - writex(reply_fd, buf, strlen(buf)); - return 0; - } - - // add a new TCP transport, device or emulator - if (!strncmp(service, "connect:", 8)) { - char buffer[4096]; - char* host = service + 8; - if (!strncmp(host, "emu:", 4)) { - connect_emulator(host + 4, buffer, sizeof(buffer)); - } else { - connect_device(host, buffer, sizeof(buffer)); - } - // Send response for emulator and device - snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer), buffer); - writex(reply_fd, buf, strlen(buf)); - return 0; - } - - // remove TCP transport - if (!strncmp(service, "disconnect:", 11)) { - char buffer[4096]; - memset(buffer, 0, sizeof(buffer)); - char* serial = service + 11; - if (serial[0] == 0) { - // disconnect from all TCP devices - unregister_all_tcp_transports(); - } else { - char hostbuf[100]; - // assume port 5555 if no port is specified - if (!strchr(serial, ':')) { - snprintf(hostbuf, sizeof(hostbuf) - 1, "%s:5555", serial); - serial = hostbuf; - } - atransport *t = find_transport(serial); - - if (t) { - unregister_transport(t); - } else { - snprintf(buffer, sizeof(buffer), "No such device %s", serial); - } - } - - snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer), buffer); - writex(reply_fd, buf, strlen(buf)); - return 0; - } - - // returns our value for ADB_SERVER_VERSION - if (!strcmp(service, "version")) { - char version[12]; - snprintf(version, sizeof version, "%04x", ADB_SERVER_VERSION); - snprintf(buf, sizeof buf, "OKAY%04x%s", (unsigned)strlen(version), version); - writex(reply_fd, buf, strlen(buf)); - return 0; - } - - if(!strncmp(service,"get-serialno",strlen("get-serialno"))) { - char *out = "unknown"; - transport = acquire_one_transport(CS_ANY, ttype, serial, NULL); - if (transport && transport->serial) { - out = transport->serial; - } - snprintf(buf, sizeof buf, "OKAY%04x%s",(unsigned)strlen(out),out); - writex(reply_fd, buf, strlen(buf)); - return 0; - } - // indicates a new emulator instance has started - if (!strncmp(service,"emulator:",9)) { - int port = atoi(service+9); - local_connect(port); - /* we don't even need to send a reply */ - return 0; - } -#endif // ADB_HOST - - if(!strncmp(service,"forward:",8) || !strncmp(service,"killforward:",12)) { - char *local, *remote, *err; - int r; - atransport *transport; - - int createForward = strncmp(service,"kill",4); - - local = service + (createForward ? 8 : 12); - remote = strchr(local,';'); - if(remote == 0) { - sendfailmsg(reply_fd, "malformed forward spec"); - return 0; - } - - *remote++ = 0; - if((local[0] == 0) || (remote[0] == 0) || (remote[0] == '*')){ - sendfailmsg(reply_fd, "malformed forward spec"); - return 0; - } - - transport = acquire_one_transport(CS_ANY, ttype, serial, &err); - if (!transport) { - sendfailmsg(reply_fd, err); - return 0; - } - - if (createForward) { - r = install_listener(local, remote, transport); - } else { - r = remove_listener(local, remote, transport); - } - if(r == 0) { - /* 1st OKAY is connect, 2nd OKAY is status */ - writex(reply_fd, "OKAYOKAY", 8); - return 0; - } - - if (createForward) { - sendfailmsg(reply_fd, (r == -1) ? "cannot rebind smartsocket" : "cannot bind socket"); - } else { - sendfailmsg(reply_fd, "cannot remove listener"); - } - return 0; - } - - if(!strncmp(service,"get-state",strlen("get-state"))) { - transport = acquire_one_transport(CS_ANY, ttype, serial, NULL); - char *state = connection_state_name(transport); - snprintf(buf, sizeof buf, "OKAY%04x%s",(unsigned)strlen(state),state); - writex(reply_fd, buf, strlen(buf)); - return 0; - } - return -1; -} |