/* * Copyright (C) 2007 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 TRACE_TAG TRACE_ADB #include #include #include #include #include #include #include #include #include #include #include "sysdeps.h" #include "adb.h" #include "adb_auth.h" #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) #if !ADB_HOST #include #include #include #include #include #include #include #else #include "usb_vendors.h" #endif #if ADB_TRACE ADB_MUTEX_DEFINE( D_lock ); #endif int HOST = 0; int gListenAll = 0; static int auth_enabled = 0; #if !ADB_HOST static const char *adb_device_banner = "device"; static const char *root_seclabel = NULL; #endif void fatal(const char *fmt, ...) { va_list ap; va_start(ap, fmt); fprintf(stderr, "error: "); vfprintf(stderr, fmt, ap); fprintf(stderr, "\n"); va_end(ap); exit(-1); } void fatal_errno(const char *fmt, ...) { va_list ap; va_start(ap, fmt); fprintf(stderr, "error: %s: ", strerror(errno)); vfprintf(stderr, fmt, ap); fprintf(stderr, "\n"); va_end(ap); exit(-1); } int adb_trace_mask; /* read a comma/space/colum/semi-column separated list of tags * from the ADB_TRACE environment variable and build the trace * mask from it. note that '1' and 'all' are special cases to * enable all tracing */ void adb_trace_init(void) { const char* p = getenv("ADB_TRACE"); const char* q; static const struct { const char* tag; int flag; } tags[] = { { "1", 0 }, { "all", 0 }, { "adb", TRACE_ADB }, { "sockets", TRACE_SOCKETS }, { "packets", TRACE_PACKETS }, { "rwx", TRACE_RWX }, { "usb", TRACE_USB }, { "sync", TRACE_SYNC }, { "sysdeps", TRACE_SYSDEPS }, { "transport", TRACE_TRANSPORT }, { "jdwp", TRACE_JDWP }, { "services", TRACE_SERVICES }, { "auth", TRACE_AUTH }, { NULL, 0 } }; if (p == NULL) return; /* use a comma/column/semi-colum/space separated list */ while (*p) { int len, tagn; q = strpbrk(p, " ,:;"); if (q == NULL) { q = p + strlen(p); } len = q - p; for (tagn = 0; tags[tagn].tag != NULL; tagn++) { int taglen = strlen(tags[tagn].tag); if (len == taglen && !memcmp(tags[tagn].tag, p, len) ) { int flag = tags[tagn].flag; if (flag == 0) { adb_trace_mask = ~0; return; } adb_trace_mask |= (1 << flag); break; } } p = q; if (*p) p++; } } #if !ADB_HOST /* * Implements ADB tracing inside the emulator. */ #include /* * Redefine open and write for qemu_pipe.h that contains inlined references * to those routines. We will redifine them back after qemu_pipe.h inclusion. */ #undef open #undef write #define open adb_open #define write adb_write #include #undef open #undef write #define open ___xxx_open #define write ___xxx_write /* A handle to adb-debug qemud service in the emulator. */ int adb_debug_qemu = -1; /* Initializes connection with the adb-debug qemud service in the emulator. */ static int adb_qemu_trace_init(void) { char con_name[32]; if (adb_debug_qemu >= 0) { return 0; } /* adb debugging QEMUD service connection request. */ snprintf(con_name, sizeof(con_name), "qemud:adb-debug"); adb_debug_qemu = qemu_pipe_open(con_name); return (adb_debug_qemu >= 0) ? 0 : -1; } void adb_qemu_trace(const char* fmt, ...) { va_list args; va_start(args, fmt); char msg[1024]; if (adb_debug_qemu >= 0) { vsnprintf(msg, sizeof(msg), fmt, args); adb_write(adb_debug_qemu, msg, strlen(msg)); } } #endif /* !ADB_HOST */ apacket *get_apacket(void) { apacket *p = malloc(sizeof(apacket)); if(p == 0) fatal("failed to allocate an apacket"); memset(p, 0, sizeof(apacket) - MAX_PAYLOAD); return p; } void put_apacket(apacket *p) { free(p); } void handle_online(atransport *t) { D("adb: online\n"); t->online = 1; } void handle_offline(atransport *t) { D("adb: offline\n"); //Close the associated usb t->online = 0; run_transport_disconnects(t); } #if DEBUG_PACKETS #define DUMPMAX 32 void print_packet(const char *label, apacket *p) { char *tag; char *x; unsigned count; switch(p->msg.command){ case A_SYNC: tag = "SYNC"; break; case A_CNXN: tag = "CNXN" ; break; case A_OPEN: tag = "OPEN"; break; case A_OKAY: tag = "OKAY"; break; case A_CLSE: tag = "CLSE"; break; case A_WRTE: tag = "WRTE"; break; case A_AUTH: tag = "AUTH"; break; default: tag = "????"; break; } fprintf(stderr, "%s: %s %08x %08x %04x \"", label, tag, p->msg.arg0, p->msg.arg1, p->msg.data_length); count = p->msg.data_length; x = (char*) p->data; if(count > DUMPMAX) { count = DUMPMAX; tag = "\n"; } else { tag = "\"\n"; } while(count-- > 0){ if((*x >= ' ') && (*x < 127)) { fputc(*x, stderr); } else { fputc('.', stderr); } x++; } fputs(tag, stderr); } #endif static void send_ready(unsigned local, unsigned remote, atransport *t) { D("Calling send_ready \n"); apacket *p = get_apacket(); p->msg.command = A_OKAY; p->msg.arg0 = local; p->msg.arg1 = remote; send_packet(p, t); } static void send_close(unsigned local, unsigned remote, atransport *t) { D("Calling send_close \n"); apacket *p = get_apacket(); p->msg.command = A_CLSE; p->msg.arg0 = local; p->msg.arg1 = remote; send_packet(p, t); } static size_t fill_connect_data(char *buf, size_t bufsize) { #if ADB_HOST return snprintf(buf, bufsize, "host::") + 1; #else static const char *cnxn_props[] = { "ro.product.name", "ro.product.model", "ro.product.device", }; static const int num_cnxn_props = ARRAY_SIZE(cnxn_props); int i; size_t remaining = bufsize; size_t len; len = snprintf(buf, remaining, "%s::", adb_device_banner); remaining -= len; buf += len; for (i = 0; i < num_cnxn_props; i++) { char value[PROPERTY_VALUE_MAX]; property_get(cnxn_props[i], value, ""); len = snprintf(buf, remaining, "%s=%s;", cnxn_props[i], value); remaining -= len; buf += len; } return bufsize - remaining + 1; #endif } #if !ADB_HOST static void send_msg_with_header(int fd, const char* msg, size_t msglen) { char header[5]; if (msglen > 0xffff) msglen = 0xffff; snprintf(header, sizeof(header), "%04x", (unsigned)msglen); writex(fd, header, 4); writex(fd, msg, msglen); } #endif static void send_msg_with_okay(int fd, const char* msg, size_t msglen) { char header[9]; if (msglen > 0xffff) msglen = 0xffff; snprintf(header, sizeof(header), "OKAY%04x", (unsigned)msglen); writex(fd, header, 8); writex(fd, msg, msglen); } static void send_connect(atransport *t) { D("Calling send_connect \n"); apacket *cp = get_apacket(); cp->msg.command = A_CNXN; cp->msg.arg0 = A_VERSION; cp->msg.arg1 = MAX_PAYLOAD; cp->msg.data_length = fill_connect_data((char *)cp->data, sizeof(cp->data)); send_packet(cp, t); } void send_auth_request(atransport *t) { D("Calling send_auth_request\n"); apacket *p; int ret; ret = adb_auth_generate_token(t->token, sizeof(t->token)); if (ret != sizeof(t->token)) { D("Error generating token ret=%d\n", ret); return; } p = get_apacket(); memcpy(p->data, t->token, ret); p->msg.command = A_AUTH; p->msg.arg0 = ADB_AUTH_TOKEN; p->msg.data_length = ret; send_packet(p, t); } static void send_auth_response(uint8_t *token, size_t token_size, atransport *t) { D("Calling send_auth_response\n"); apacket *p = get_apacket(); int ret; ret = adb_auth_sign(t->key, token, token_size, p->data); if (!ret) { D("Error signing the token\n"); put_apacket(p); return; } p->msg.command = A_AUTH; p->msg.arg0 = ADB_AUTH_SIGNATURE; p->msg.data_length = ret; send_packet(p, t); } static void send_auth_publickey(atransport *t) { D("Calling send_auth_publickey\n"); apacket *p = get_apacket(); int ret; ret = adb_auth_get_userkey(p->data, sizeof(p->data)); if (!ret) { D("Failed to get user public key\n"); put_apacket(p); return; } p->msg.command = A_AUTH; p->msg.arg0 = ADB_AUTH_RSAPUBLICKEY; p->msg.data_length = ret; send_packet(p, t); } void adb_auth_verified(atransport *t) { handle_online(t); send_connect(t); } 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_RECOVERY: return "recovery"; case CS_SIDELOAD: return "sideload"; case CS_OFFLINE: return "offline"; case CS_UNAUTHORIZED: return "unauthorized"; default: return "unknown"; } } /* qual_overwrite is used to overwrite a qualifier string. dst is a * pointer to a char pointer. It is assumed that if *dst is non-NULL, it * was malloc'ed and needs to freed. *dst will be set to a dup of src. */ static void qual_overwrite(char **dst, const char *src) { if (!dst) return; free(*dst); *dst = NULL; if (!src || !*src) return; *dst = strdup(src); } void parse_banner(char *banner, atransport *t) { static const char *prop_seps = ";"; static const char key_val_sep = '='; char *cp; char *type; D("parse_banner: %s\n", banner); type = banner; cp = strchr(type, ':'); if (cp) { *cp++ = 0; /* Nothing is done with second field. */ cp = strchr(cp, ':'); if (cp) { char *save; char *key; key = adb_strtok_r(cp + 1, prop_seps, &save); while (key) { cp = strchr(key, key_val_sep); if (cp) { *cp++ = '\0'; if (!strcmp(key, "ro.product.name")) qual_overwrite(&t->product, cp); else if (!strcmp(key, "ro.product.model")) qual_overwrite(&t->model, cp); else if (!strcmp(key, "ro.product.device")) qual_overwrite(&t->device, cp); } key = adb_strtok_r(NULL, prop_seps, &save); } } } if(!strcmp(type, "bootloader")){ D("setting connection_state to CS_BOOTLOADER\n"); t->connection_state = CS_BOOTLOADER; update_transports(); return; } if(!strcmp(type, "device")) { D("setting connection_state to CS_DEVICE\n"); t->connection_state = CS_DEVICE; update_transports(); return; } if(!strcmp(type, "recovery")) { D("setting connection_state to CS_RECOVERY\n"); t->connection_state = CS_RECOVERY; update_transports(); return; } if(!strcmp(type, "sideload")) { D("setting connection_state to CS_SIDELOAD\n"); t->connection_state = CS_SIDELOAD; update_transports(); return; } t->connection_state = CS_HOST; } void handle_packet(apacket *p, atransport *t) { asocket *s; D("handle_packet() %c%c%c%c\n", ((char*) (&(p->msg.command)))[0], ((char*) (&(p->msg.command)))[1], ((char*) (&(p->msg.command)))[2], ((char*) (&(p->msg.command)))[3]); print_packet("recv", p); switch(p->msg.command){ case A_SYNC: if(p->msg.arg0){ send_packet(p, t); if(HOST) send_connect(t); } else { t->connection_state = CS_OFFLINE; handle_offline(t); send_packet(p, t); } return; case A_CNXN: /* CONNECT(version, maxdata, "system-id-string") */ /* XXX verify version, etc */ if(t->connection_state != CS_OFFLINE) { t->connection_state = CS_OFFLINE; handle_offline(t); } parse_banner((char*) p->data, t); if (HOST || !auth_enabled) { handle_online(t); if(!HOST) send_connect(t); } else { send_auth_request(t); } break; case A_AUTH: if (p->msg.arg0 == ADB_AUTH_TOKEN) { t->connection_state = CS_UNAUTHORIZED; t->key = adb_auth_nextkey(t->key); if (t->key) { send_auth_response(p->data, p->msg.data_length, t); } else { /* No more private keys to try, send the public key */ send_auth_publickey(t); } } else if (p->msg.arg0 == ADB_AUTH_SIGNATURE) { if (adb_auth_verify(t->token, p->data, p->msg.data_length)) { adb_auth_verified(t); t->failed_auth_attempts = 0; } else { if (t->failed_auth_attempts++ > 10) adb_sleep_ms(1000); send_auth_request(t); } } else if (p->msg.arg0 == ADB_AUTH_RSAPUBLICKEY) { adb_auth_confirm_key(p->data, p->msg.data_length, t); } break; case A_OPEN: /* OPEN(local-id, 0, "destination") */ if (t->online && p->msg.arg0 != 0 && p->msg.arg1 == 0) { char *name = (char*) p->data; name[p->msg.data_length > 0 ? p->msg.data_length - 1 : 0] = 0; s = create_local_service_socket(name); if(s == 0) { send_close(0, p->msg.arg0, t); } else { s->peer = create_remote_socket(p->msg.arg0, t); s->peer->peer = s; send_ready(s->id, s->peer->id, t); s->ready(s); } } break; case A_OKAY: /* READY(local-id, remote-id, "") */ if (t->online && p->msg.arg0 != 0 && p->msg.arg1 != 0) { if((s = find_local_socket(p->msg.arg1, 0))) { if(s->peer == 0) { /* On first READY message, create the connection. */ s->peer = create_remote_socket(p->msg.arg0, t); s->peer->peer = s; s->ready(s); } else if (s->peer->id == p->msg.arg0) { /* Other READY messages must use the same local-id */ s->ready(s); } else { D("Invalid A_OKAY(%d,%d), expected A_OKAY(%d,%d) on transport %s\n", p->msg.arg0, p->msg.arg1, s->peer->id, p->msg.arg1, t->serial); } } } break; case A_CLSE: /* CLOSE(local-id, remote-id, "") or CLOSE(0, remote-id, "") */ if (t->online && p->msg.arg1 != 0) { if((s = find_local_socket(p->msg.arg1, p->msg.arg0))) { /* According to protocol.txt, p->msg.arg0 might be 0 to indicate * a failed OPEN only. However, due to a bug in previous ADB * versions, CLOSE(0, remote-id, "") was also used for normal * CLOSE() operations. * * This is bad because it means a compromised adbd could * send packets to close connections between the host and * other devices. To avoid this, only allow this if the local * socket has a peer on the same transport. */ if (p->msg.arg0 == 0 && s->peer && s->peer->transport != t) { D("Invalid A_CLSE(0, %u) from transport %s, expected transport %s\n", p->msg.arg1, t->serial, s->peer->transport->serial); } else { s->close(s); } } } break; case A_WRTE: /* WRITE(local-id, remote-id, ) */ if (t->online && p->msg.arg0 != 0 && p->msg.arg1 != 0) { if((s = find_local_socket(p->msg.arg1, p->msg.arg0))) { unsigned rid = p->msg.arg0; p->len = p->msg.data_length; if(s->enqueue(s, p) == 0) { D("Enqueue the socket\n"); send_ready(s->id, rid, t); } return; } } break; default: printf("handle_packet: what is %08x?!\n", p->msg.command); } 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); if (gListenAll > 0) { ret = socket_inaddr_any_server(port, SOCK_STREAM); } else { 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; } // Write a single line describing a listener to a user-provided buffer. // Appends a trailing zero, even in case of truncation, but the function // returns the full line length. // If |buffer| is NULL, does not write but returns required size. static int format_listener(alistener* l, char* buffer, size_t buffer_len) { // Format is simply: // // " " " " "\n" // int local_len = strlen(l->local_name); int connect_len = strlen(l->connect_to); int serial_len = strlen(l->transport->serial); if (buffer != NULL) { snprintf(buffer, buffer_len, "%s %s %s\n", l->transport->serial, l->local_name, l->connect_to); } // NOTE: snprintf() on Windows returns -1 in case of truncation, so // return the computed line length instead. return local_len + connect_len + serial_len + 3; } // Write the list of current listeners (network redirections) into a // user-provided buffer. Appends a trailing zero, even in case of // trunctaion, but return the full size in bytes. // If |buffer| is NULL, does not write but returns required size. static int format_listeners(char* buf, size_t buflen) { alistener* l; int result = 0; for (l = listener_list.next; l != &listener_list; l = l->next) { // Ignore special listeners like those for *smartsocket* if (l->connect_to[0] == '*') continue; int len = format_listener(l, buf, buflen); // Ensure there is space for the trailing zero. result += len; if (buf != NULL) { buf += len; buflen -= len; if (buflen <= 0) break; } } return result; } static int remove_listener(const char *local_name, atransport* transport) { alistener *l; for (l = listener_list.next; l != &listener_list; l = l->next) { if (!strcmp(local_name, l->local_name)) { listener_disconnect(l, l->transport); return 0; } } return -1; } static void remove_all_listeners(void) { alistener *l, *l_next; for (l = listener_list.next; l != &listener_list; l = l_next) { l_next = l->next; // Never remove smart sockets. if (l->connect_to[0] == '*') continue; listener_disconnect(l, l->transport); } } // error/status codes for install_listener. typedef enum { INSTALL_STATUS_OK = 0, INSTALL_STATUS_INTERNAL_ERROR = -1, INSTALL_STATUS_CANNOT_BIND = -2, INSTALL_STATUS_CANNOT_REBIND = -3, } install_status_t; static install_status_t install_listener(const char *local_name, const char *connect_to, atransport* transport, int no_rebind) { 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 INSTALL_STATUS_INTERNAL_ERROR; } /* can't repurpose a listener if 'no_rebind' is true */ if (no_rebind) { return INSTALL_STATUS_CANNOT_REBIND; } cto = strdup(connect_to); if(cto == 0) { return INSTALL_STATUS_INTERNAL_ERROR; } //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 INSTALL_STATUS_OK; } } 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 INSTALL_STATUS_OK; nomem: fatal("cannot allocate listener"); return INSTALL_STATUS_INTERNAL_ERROR; } #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 #ifdef WORKAROUND_BUG6558362 #include #define AFFINITY_ENVVAR "ADB_CPU_AFFINITY_BUG6558362" void adb_set_affinity(void) { cpu_set_t cpu_set; const char* cpunum_str = getenv(AFFINITY_ENVVAR); char* strtol_res; int cpu_num; if (!cpunum_str || !*cpunum_str) return; cpu_num = strtol(cpunum_str, &strtol_res, 0); if (*strtol_res != '\0') fatal("bad number (%s) in env var %s. Expecting 0..n.\n", cpunum_str, AFFINITY_ENVVAR); sched_getaffinity(0, sizeof(cpu_set), &cpu_set); D("orig cpu_set[0]=0x%08lx\n", cpu_set.__bits[0]); CPU_ZERO(&cpu_set); CPU_SET(cpu_num, &cpu_set); sched_setaffinity(0, sizeof(cpu_set), &cpu_set); sched_getaffinity(0, sizeof(cpu_set), &cpu_set); D("new cpu_set[0]=0x%08lx\n", cpu_set.__bits[0]); } #endif 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; HANDLE stdout_handle, stderr_handle; 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 ); /* Some programs want to launch an adb command and collect its output by * calling CreateProcess with inheritable stdout/stderr handles, then * using read() to get its output. When this happens, the stdout/stderr * handles passed to the adb client process will also be inheritable. * When starting the adb server here, care must be taken to reset them * to non-inheritable. * Otherwise, something bad happens: even if the adb command completes, * the calling process is stuck while read()-ing from the stdout/stderr * descriptors, because they're connected to corresponding handles in the * adb server process (even if the latter never uses/writes to them). */ stdout_handle = GetStdHandle( STD_OUTPUT_HANDLE ); stderr_handle = GetStdHandle( STD_ERROR_HANDLE ); if (stdout_handle != INVALID_HANDLE_VALUE) { SetHandleInformation( stdout_handle, HANDLE_FLAG_INHERIT, 0 ); } if (stderr_handle != INVALID_HANDLE_VALUE) { SetHandleInformation( stderr_handle, 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]); char str_port[30]; snprintf(str_port, sizeof(str_port), "%d", server_port); // child process int result = execl(path, "adb", "-P", str_port, "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); } #if !ADB_HOST static void drop_capabilities_bounding_set_if_needed() { #ifdef ALLOW_ADBD_ROOT char value[PROPERTY_VALUE_MAX]; property_get("ro.debuggable", value, ""); if (strcmp(value, "1") == 0) { return; } #endif int i; for (i = 0; prctl(PR_CAPBSET_READ, i, 0, 0, 0) >= 0; i++) { if (i == CAP_SETUID || i == CAP_SETGID) { // CAP_SETUID CAP_SETGID needed by /system/bin/run-as continue; } int err = prctl(PR_CAPBSET_DROP, i, 0, 0, 0); // Some kernels don't have file capabilities compiled in, and // prctl(PR_CAPBSET_DROP) returns EINVAL. Don't automatically // die when we see such misconfigured kernels. if ((err < 0) && (errno != EINVAL)) { exit(1); } } } static int should_drop_privileges() { #ifndef ALLOW_ADBD_ROOT return 1; #else /* ALLOW_ADBD_ROOT */ int secure = 0; char value[PROPERTY_VALUE_MAX]; /* run adbd in secure mode if ro.secure is set and ** we are not in the emulator */ property_get("ro.kernel.qemu", value, ""); if (strcmp(value, "1") != 0) { property_get("ro.secure", value, "1"); if (strcmp(value, "1") == 0) { // don't run as root if ro.secure is set... secure = 1; // ... except we allow running as root in userdebug builds if the // service.adb.root property has been set by the "adb root" command property_get("ro.debuggable", value, ""); if (strcmp(value, "1") == 0) { property_get("service.adb.root", value, ""); if (strcmp(value, "1") == 0) { secure = 0; } } } } return secure; #endif /* ALLOW_ADBD_ROOT */ } #endif /* !ADB_HOST */ int adb_main(int is_daemon, int server_port) { #if !ADB_HOST int port; char value[PROPERTY_VALUE_MAX]; umask(000); #endif atexit(adb_cleanup); #ifdef HAVE_WIN32_PROC SetConsoleCtrlHandler( ctrlc_handler, TRUE ); #elif defined(HAVE_FORKEXEC) // No SIGCHLD. Let the service subproc handle its children. signal(SIGPIPE, SIG_IGN); #endif init_transport_registration(); #if ADB_HOST HOST = 1; #ifdef WORKAROUND_BUG6558362 if(is_daemon) adb_set_affinity(); #endif usb_vendors_init(); usb_init(); local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT); adb_auth_init(); char local_name[30]; build_local_name(local_name, sizeof(local_name), server_port); if(install_listener(local_name, "*smartsocket*", NULL, 0)) { exit(1); } #else property_get("ro.adb.secure", value, "0"); auth_enabled = !strcmp(value, "1"); if (auth_enabled) adb_auth_init(); // Our external storage path may be different than apps, since // we aren't able to bind mount after dropping root. const char* adb_external_storage = getenv("ADB_EXTERNAL_STORAGE"); if (NULL != adb_external_storage) { setenv("EXTERNAL_STORAGE", adb_external_storage, 1); } else { D("Warning: ADB_EXTERNAL_STORAGE is not set. Leaving EXTERNAL_STORAGE" " unchanged.\n"); } /* don't listen on a port (default 5037) if running in secure mode */ /* don't run as root if we are running in secure mode */ if (should_drop_privileges()) { drop_capabilities_bounding_set_if_needed(); /* add extra groups: ** AID_ADB to access the USB driver ** AID_LOG to read system logs (adb logcat) ** AID_INPUT to diagnose input issues (getevent) ** AID_INET to diagnose network issues (netcfg, ping) ** AID_GRAPHICS to access the frame buffer ** AID_NET_BT and AID_NET_BT_ADMIN to diagnose bluetooth (hcidump) ** AID_SDCARD_R to allow reading from the SD card ** AID_SDCARD_RW to allow writing to the SD card ** AID_NET_BW_STATS to read out qtaguid statistics */ gid_t groups[] = { AID_ADB, AID_LOG, AID_INPUT, AID_INET, AID_GRAPHICS, AID_NET_BT, AID_NET_BT_ADMIN, AID_SDCARD_R, AID_SDCARD_RW, AID_NET_BW_STATS }; if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) { exit(1); } /* then switch user and group to "shell" */ if (setgid(AID_SHELL) != 0) { exit(1); } if (setuid(AID_SHELL) != 0) { exit(1); } D("Local port disabled\n"); } else { char local_name[30]; if ((root_seclabel != NULL) && (is_selinux_enabled() > 0)) { // b/12587913: fix setcon to allow const pointers if (setcon((char *)root_seclabel) < 0) { exit(1); } } build_local_name(local_name, sizeof(local_name), server_port); if(install_listener(local_name, "*smartsocket*", NULL, 0)) { exit(1); } } int usb = 0; if (access(USB_ADB_PATH, F_OK) == 0 || access(USB_FFS_ADB_EP0, F_OK) == 0) { // listen on USB usb_init(); usb = 1; } // If one of these properties is set, also listen on that port // If one of the properties isn't set and we couldn't listen on usb, // listen on the default port. property_get("service.adb.tcp.port", value, ""); if (!value[0]) { property_get("persist.adb.tcp.port", value, ""); } if (sscanf(value, "%d", &port) == 1 && port > 0) { printf("using port=%d\n", port); // listen on TCP port specified by service.adb.tcp.port property local_init(port); } else if (!usb) { // listen on default port local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT); } D("adb_main(): pre init_jdwp()\n"); init_jdwp(); D("adb_main(): post init_jdwp()\n"); #endif if (is_daemon) { // inform our parent that we are up and running. #ifdef HAVE_WIN32_PROC DWORD count; WriteFile( GetStdHandle( STD_OUTPUT_HANDLE ), "OK\n", 3, &count, NULL ); #elif defined(HAVE_FORKEXEC) fprintf(stderr, "OK\n"); #endif start_logging(); } D("Event loop starting\n"); fdevent_loop(); usb_cleanup(); return 0; } // Try to handle a network forwarding request. // This returns 1 on success, 0 on failure, and -1 to indicate this is not // a forwarding-related request. int handle_forward_request(const char* service, transport_type ttype, char* serial, int reply_fd) { if (!strcmp(service, "list-forward")) { // Create the list of forward redirections. int buffer_size = format_listeners(NULL, 0); // Add one byte for the trailing zero. char* buffer = malloc(buffer_size + 1); if (buffer == NULL) { sendfailmsg(reply_fd, "not enough memory"); return 1; } (void) format_listeners(buffer, buffer_size + 1); #if ADB_HOST send_msg_with_okay(reply_fd, buffer, buffer_size); #else send_msg_with_header(reply_fd, buffer, buffer_size); #endif free(buffer); return 1; } if (!strcmp(service, "killforward-all")) { remove_all_listeners(); #if ADB_HOST /* On the host: 1st OKAY is connect, 2nd OKAY is status */ adb_write(reply_fd, "OKAY", 4); #endif adb_write(reply_fd, "OKAY", 4); return 1; } if (!strncmp(service, "forward:",8) || !strncmp(service, "killforward:",12)) { char *local, *remote, *err; int r; atransport *transport; int createForward = strncmp(service, "kill", 4); int no_rebind = 0; local = strchr(service, ':') + 1; // Handle forward:norebind:... here if (createForward && !strncmp(local, "norebind:", 9)) { no_rebind = 1; local = strchr(local, ':') + 1; } remote = strchr(local,';'); if (createForward) { // Check forward: parameter format: ';' if(remote == 0) { sendfailmsg(reply_fd, "malformed forward spec"); return 1; } *remote++ = 0; if((local[0] == 0) || (remote[0] == 0) || (remote[0] == '*')) { sendfailmsg(reply_fd, "malformed forward spec"); return 1; } } else { // Check killforward: parameter format: '' if (local[0] == 0) { sendfailmsg(reply_fd, "malformed forward spec"); return 1; } } transport = acquire_one_transport(CS_ANY, ttype, serial, &err); if (!transport) { sendfailmsg(reply_fd, err); return 1; } if (createForward) { r = install_listener(local, remote, transport, no_rebind); } else { r = remove_listener(local, transport); } if(r == 0) { #if ADB_HOST /* On the host: 1st OKAY is connect, 2nd OKAY is status */ writex(reply_fd, "OKAY", 4); #endif writex(reply_fd, "OKAY", 4); return 1; } if (createForward) { const char* message; switch (r) { case INSTALL_STATUS_CANNOT_BIND: message = "cannot bind to socket"; break; case INSTALL_STATUS_CANNOT_REBIND: message = "cannot rebind existing socket"; break; default: message = "internal error"; } sendfailmsg(reply_fd, message); } else { sendfailmsg(reply_fd, "cannot remove listener"); } return 1; } return 0; } int handle_host_request(char *service, transport_type ttype, char* serial, int reply_fd, asocket *s) { atransport *transport = NULL; 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 (!strncmp(service, "devices", 7)) { char buffer[4096]; int use_long = !strcmp(service+7, "-l"); if (use_long || service[7] == 0) { memset(buffer, 0, sizeof(buffer)); D("Getting device list \n"); list_transports(buffer, sizeof(buffer), use_long); D("Wrote device list \n"); send_msg_with_okay(reply_fd, buffer, strlen(buffer)); 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); } } send_msg_with_okay(reply_fd, buffer, strlen(buffer)); return 0; } // returns our value for ADB_SERVER_VERSION if (!strcmp(service, "version")) { char version[12]; snprintf(version, sizeof version, "%04x", ADB_SERVER_VERSION); send_msg_with_okay(reply_fd, version, strlen(version)); 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; } send_msg_with_okay(reply_fd, out, strlen(out)); return 0; } if(!strncmp(service,"get-devpath",strlen("get-devpath"))) { char *out = "unknown"; transport = acquire_one_transport(CS_ANY, ttype, serial, NULL); if (transport && transport->devpath) { out = transport->devpath; } send_msg_with_okay(reply_fd, out, strlen(out)); 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 int ret = handle_forward_request(service, ttype, serial, reply_fd); if (ret >= 0) return ret - 1; if(!strncmp(service,"get-state",strlen("get-state"))) { transport = acquire_one_transport(CS_ANY, ttype, serial, NULL); char *state = connection_state_name(transport); send_msg_with_okay(reply_fd, state, strlen(state)); return 0; } return -1; } int main(int argc, char **argv) { #if ADB_HOST adb_sysdeps_init(); adb_trace_init(); D("Handling commandline()\n"); return adb_commandline(argc - 1, argv + 1); #else /* If adbd runs inside the emulator this will enable adb tracing via * adb-debug qemud service in the emulator. */ adb_qemu_trace_init(); while(1) { int c; int option_index = 0; static struct option opts[] = { {"root_seclabel", required_argument, 0, 's' }, {"device_banner", required_argument, 0, 'b' } }; c = getopt_long(argc, argv, "", opts, &option_index); if (c == -1) break; switch (c) { case 's': root_seclabel = optarg; break; case 'b': adb_device_banner = optarg; break; default: break; } } start_device_log(); D("Handling main()\n"); return adb_main(0, DEFAULT_ADB_PORT); #endif }