The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <stdlib.h> |
| 18 | #include <stdio.h> |
| 19 | #include <unistd.h> |
| 20 | #include <string.h> |
| 21 | #include <errno.h> |
| 22 | |
| 23 | #include "sysdeps.h" |
| 24 | |
| 25 | #define TRACE_TAG TRACE_ADB |
| 26 | #include "adb.h" |
| 27 | #include "file_sync_service.h" |
| 28 | |
| 29 | #if ADB_HOST |
| 30 | # ifndef HAVE_WINSOCK |
| 31 | # include <netinet/in.h> |
| 32 | # include <netdb.h> |
| 33 | # endif |
Mike Lockwood | cc1de48 | 2009-07-30 16:23:56 -0700 | [diff] [blame^] | 34 | #else |
| 35 | #include <sys/poll.h> |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 36 | #endif |
| 37 | |
| 38 | typedef struct stinfo stinfo; |
| 39 | |
| 40 | struct stinfo { |
| 41 | void (*func)(int fd, void *cookie); |
| 42 | int fd; |
| 43 | void *cookie; |
| 44 | }; |
| 45 | |
| 46 | |
| 47 | void *service_bootstrap_func(void *x) |
| 48 | { |
| 49 | stinfo *sti = x; |
| 50 | sti->func(sti->fd, sti->cookie); |
| 51 | free(sti); |
| 52 | return 0; |
| 53 | } |
| 54 | |
| 55 | #if ADB_HOST |
| 56 | ADB_MUTEX_DEFINE( dns_lock ); |
| 57 | |
| 58 | static void dns_service(int fd, void *cookie) |
| 59 | { |
| 60 | char *hostname = cookie; |
| 61 | struct hostent *hp; |
| 62 | unsigned zero = 0; |
| 63 | |
| 64 | adb_mutex_lock(&dns_lock); |
| 65 | hp = gethostbyname(hostname); |
| 66 | if(hp == 0) { |
| 67 | writex(fd, &zero, 4); |
| 68 | } else { |
| 69 | writex(fd, hp->h_addr, 4); |
| 70 | } |
| 71 | adb_mutex_unlock(&dns_lock); |
| 72 | adb_close(fd); |
| 73 | } |
| 74 | #else |
| 75 | extern int recovery_mode; |
| 76 | |
| 77 | static void recover_service(int s, void *cookie) |
| 78 | { |
| 79 | unsigned char buf[4096]; |
| 80 | unsigned count = (unsigned) cookie; |
| 81 | int fd; |
| 82 | |
| 83 | fd = adb_creat("/tmp/update", 0644); |
| 84 | if(fd < 0) { |
| 85 | adb_close(s); |
| 86 | return; |
| 87 | } |
| 88 | |
| 89 | while(count > 0) { |
| 90 | unsigned xfer = (count > 4096) ? 4096 : count; |
| 91 | if(readx(s, buf, xfer)) break; |
| 92 | if(writex(fd, buf, xfer)) break; |
| 93 | count -= xfer; |
| 94 | } |
| 95 | |
| 96 | if(count == 0) { |
| 97 | writex(s, "OKAY", 4); |
| 98 | } else { |
| 99 | writex(s, "FAIL", 4); |
| 100 | } |
| 101 | adb_close(fd); |
| 102 | adb_close(s); |
| 103 | |
| 104 | fd = adb_creat("/tmp/update.begin", 0644); |
| 105 | adb_close(fd); |
| 106 | } |
| 107 | |
The Android Open Source Project | e037fd7 | 2009-03-13 13:04:37 -0700 | [diff] [blame] | 108 | void restart_root_service(int fd, void *cookie) |
| 109 | { |
| 110 | char buf[100]; |
| 111 | char value[PROPERTY_VALUE_MAX]; |
| 112 | |
| 113 | if (getuid() == 0) { |
| 114 | snprintf(buf, sizeof(buf), "adbd is already running as root\n"); |
| 115 | writex(fd, buf, strlen(buf)); |
| 116 | adb_close(fd); |
| 117 | } else { |
| 118 | property_get("ro.debuggable", value, ""); |
| 119 | if (strcmp(value, "1") != 0) { |
| 120 | snprintf(buf, sizeof(buf), "adbd cannot run as root in production builds\n"); |
| 121 | writex(fd, buf, strlen(buf)); |
| 122 | return; |
| 123 | } |
| 124 | |
| 125 | property_set("service.adb.root", "1"); |
| 126 | snprintf(buf, sizeof(buf), "restarting adbd as root\n"); |
| 127 | writex(fd, buf, strlen(buf)); |
| 128 | adb_close(fd); |
| 129 | |
| 130 | // quit, and init will restart us as root |
| 131 | sleep(1); |
| 132 | exit(1); |
| 133 | } |
| 134 | } |
| 135 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 136 | #endif |
| 137 | |
| 138 | #if 0 |
| 139 | static void echo_service(int fd, void *cookie) |
| 140 | { |
| 141 | char buf[4096]; |
| 142 | int r; |
| 143 | char *p; |
| 144 | int c; |
| 145 | |
| 146 | for(;;) { |
| 147 | r = read(fd, buf, 4096); |
| 148 | if(r == 0) goto done; |
| 149 | if(r < 0) { |
| 150 | if(errno == EINTR) continue; |
| 151 | else goto done; |
| 152 | } |
| 153 | |
| 154 | c = r; |
| 155 | p = buf; |
| 156 | while(c > 0) { |
| 157 | r = write(fd, p, c); |
| 158 | if(r > 0) { |
| 159 | c -= r; |
| 160 | p += r; |
| 161 | continue; |
| 162 | } |
| 163 | if((r < 0) && (errno == EINTR)) continue; |
| 164 | goto done; |
| 165 | } |
| 166 | } |
| 167 | done: |
| 168 | close(fd); |
| 169 | } |
| 170 | #endif |
| 171 | |
| 172 | static int create_service_thread(void (*func)(int, void *), void *cookie) |
| 173 | { |
| 174 | stinfo *sti; |
| 175 | adb_thread_t t; |
| 176 | int s[2]; |
| 177 | |
| 178 | if(adb_socketpair(s)) { |
| 179 | printf("cannot create service socket pair\n"); |
| 180 | return -1; |
| 181 | } |
| 182 | |
| 183 | sti = malloc(sizeof(stinfo)); |
| 184 | if(sti == 0) fatal("cannot allocate stinfo"); |
| 185 | sti->func = func; |
| 186 | sti->cookie = cookie; |
| 187 | sti->fd = s[1]; |
| 188 | |
| 189 | if(adb_thread_create( &t, service_bootstrap_func, sti)){ |
| 190 | free(sti); |
| 191 | adb_close(s[0]); |
| 192 | adb_close(s[1]); |
| 193 | printf("cannot create service thread\n"); |
| 194 | return -1; |
| 195 | } |
| 196 | |
| 197 | D("service thread started, %d:%d\n",s[0], s[1]); |
| 198 | return s[0]; |
| 199 | } |
| 200 | |
Mike Lockwood | cc1de48 | 2009-07-30 16:23:56 -0700 | [diff] [blame^] | 201 | #if !ADB_HOST |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 202 | static int create_subprocess(const char *cmd, const char *arg0, const char *arg1) |
| 203 | { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 204 | char *devname; |
| 205 | int ptm; |
| 206 | pid_t pid; |
| 207 | |
| 208 | ptm = unix_open("/dev/ptmx", O_RDWR); // | O_NOCTTY); |
| 209 | if(ptm < 0){ |
| 210 | printf("[ cannot open /dev/ptmx - %s ]\n",strerror(errno)); |
| 211 | return -1; |
| 212 | } |
| 213 | fcntl(ptm, F_SETFD, FD_CLOEXEC); |
| 214 | |
| 215 | if(grantpt(ptm) || unlockpt(ptm) || |
| 216 | ((devname = (char*) ptsname(ptm)) == 0)){ |
| 217 | printf("[ trouble with /dev/ptmx - %s ]\n", strerror(errno)); |
| 218 | return -1; |
| 219 | } |
| 220 | |
| 221 | pid = fork(); |
| 222 | if(pid < 0) { |
| 223 | printf("- fork failed: %s -\n", strerror(errno)); |
| 224 | return -1; |
| 225 | } |
| 226 | |
| 227 | if(pid == 0){ |
| 228 | int pts; |
| 229 | |
| 230 | setsid(); |
| 231 | |
| 232 | pts = unix_open(devname, O_RDWR); |
| 233 | if(pts < 0) exit(-1); |
| 234 | |
| 235 | dup2(pts, 0); |
| 236 | dup2(pts, 1); |
| 237 | dup2(pts, 2); |
| 238 | |
| 239 | adb_close(ptm); |
| 240 | |
| 241 | execl(cmd, cmd, arg0, arg1, NULL); |
| 242 | fprintf(stderr, "- exec '%s' failed: %s (%d) -\n", |
| 243 | cmd, strerror(errno), errno); |
| 244 | exit(-1); |
| 245 | } else { |
Mike Lockwood | 249ad57 | 2009-05-20 09:14:30 -0400 | [diff] [blame] | 246 | // set child's OOM adjustment to zero |
| 247 | char text[64]; |
| 248 | snprintf(text, sizeof text, "/proc/%d/oom_adj", pid); |
| 249 | int fd = adb_open(text, O_WRONLY); |
| 250 | if (fd >= 0) { |
| 251 | adb_write(fd, "0", 1); |
| 252 | adb_close(fd); |
| 253 | } else { |
| 254 | D("adb: unable to open %s\n", text); |
| 255 | } |
Mike Lockwood | cc1de48 | 2009-07-30 16:23:56 -0700 | [diff] [blame^] | 256 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 257 | return ptm; |
| 258 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 259 | } |
Mike Lockwood | cc1de48 | 2009-07-30 16:23:56 -0700 | [diff] [blame^] | 260 | #endif /* !ADB_HOST */ |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 261 | |
| 262 | #if ADB_HOST |
| 263 | #define SHELL_COMMAND "/bin/sh" |
| 264 | #else |
| 265 | #define SHELL_COMMAND "/system/bin/sh" |
| 266 | #endif |
| 267 | |
Mike Lockwood | cc1de48 | 2009-07-30 16:23:56 -0700 | [diff] [blame^] | 268 | #if !ADB_HOST |
| 269 | static void shell_service(int s, void *command) |
| 270 | { |
| 271 | char buffer[MAX_PAYLOAD]; |
| 272 | char buffer2[MAX_PAYLOAD]; |
| 273 | struct pollfd ufds[2]; |
| 274 | int fd, ret = 0; |
| 275 | unsigned count = 0; |
| 276 | char** args = (char **)command; |
| 277 | fd = create_subprocess(SHELL_COMMAND, args[0], args[1]); |
| 278 | |
| 279 | while (1) { |
| 280 | while (count < sizeof(buffer)) { |
| 281 | ufds[0].fd = fd; |
| 282 | ufds[0].events = POLLIN | POLLHUP; |
| 283 | ufds[0].revents = 0; |
| 284 | ufds[1].fd = s; |
| 285 | ufds[1].events = POLLIN | POLLHUP; |
| 286 | ufds[1].revents = 0; |
| 287 | // use a 100ms timeout so we don't block indefinitely with our |
| 288 | // buffer partially filled. |
| 289 | ret = poll(ufds, 2, 100); |
| 290 | if (ret <= 0) { |
| 291 | D("poll returned %d\n", ret); |
| 292 | // file has closed or we timed out |
| 293 | // set ret to 1 so we don't exit the outer loop |
| 294 | ret = 1; |
| 295 | break; |
| 296 | } |
| 297 | |
| 298 | if (ufds[0].revents & POLLIN) { |
| 299 | ret = adb_read(fd, buffer + count, sizeof(buffer) - count); |
| 300 | D("read fd ret: %d, count: %d\n", ret, count); |
| 301 | if (ret > 0) |
| 302 | count += ret; |
| 303 | else |
| 304 | break; |
| 305 | } |
| 306 | if (ufds[1].revents & POLLIN) { |
| 307 | ret = adb_read(s, buffer2, sizeof(buffer2)); |
| 308 | D("read s ret: %d\n", ret); |
| 309 | if (ret > 0) |
| 310 | adb_write(fd, buffer2, ret); |
| 311 | else |
| 312 | break; |
| 313 | } |
| 314 | |
| 315 | if ((ufds[0].revents & POLLHUP) || (ufds[1].revents & POLLHUP)) { |
| 316 | // set flag to exit after flushing the buffer |
| 317 | ret = -1; |
| 318 | break; |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | D("writing: %d\n", count); |
| 323 | if (count > 0) { |
| 324 | adb_write(s, buffer, count); |
| 325 | count = 0; |
| 326 | } |
| 327 | if (ret <= 0) |
| 328 | break; |
| 329 | } |
| 330 | |
| 331 | D("shell_service done\n"); |
| 332 | |
| 333 | adb_close(fd); |
| 334 | adb_close(s); |
| 335 | } |
| 336 | #endif // !ADB_HOST |
| 337 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 338 | int service_to_fd(const char *name) |
| 339 | { |
| 340 | int ret = -1; |
| 341 | |
| 342 | if(!strncmp(name, "tcp:", 4)) { |
| 343 | int port = atoi(name + 4); |
| 344 | name = strchr(name + 4, ':'); |
| 345 | if(name == 0) { |
| 346 | ret = socket_loopback_client(port, SOCK_STREAM); |
| 347 | if (ret >= 0) |
| 348 | disable_tcp_nagle(ret); |
| 349 | } else { |
| 350 | #if ADB_HOST |
| 351 | adb_mutex_lock(&dns_lock); |
| 352 | ret = socket_network_client(name + 1, port, SOCK_STREAM); |
| 353 | adb_mutex_unlock(&dns_lock); |
| 354 | #else |
| 355 | return -1; |
| 356 | #endif |
| 357 | } |
| 358 | #ifndef HAVE_WINSOCK /* winsock doesn't implement unix domain sockets */ |
| 359 | } else if(!strncmp(name, "local:", 6)) { |
| 360 | ret = socket_local_client(name + 6, |
| 361 | ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM); |
| 362 | } else if(!strncmp(name, "localreserved:", 14)) { |
| 363 | ret = socket_local_client(name + 14, |
| 364 | ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM); |
| 365 | } else if(!strncmp(name, "localabstract:", 14)) { |
| 366 | ret = socket_local_client(name + 14, |
| 367 | ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); |
| 368 | } else if(!strncmp(name, "localfilesystem:", 16)) { |
| 369 | ret = socket_local_client(name + 16, |
| 370 | ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM); |
| 371 | #endif |
| 372 | #if ADB_HOST |
| 373 | } else if(!strncmp("dns:", name, 4)){ |
| 374 | char *n = strdup(name + 4); |
| 375 | if(n == 0) return -1; |
| 376 | ret = create_service_thread(dns_service, n); |
| 377 | #else /* !ADB_HOST */ |
| 378 | } else if(!strncmp("dev:", name, 4)) { |
| 379 | ret = unix_open(name + 4, O_RDWR); |
| 380 | } else if(!strncmp(name, "framebuffer:", 12)) { |
| 381 | ret = create_service_thread(framebuffer_service, 0); |
| 382 | } else if(recovery_mode && !strncmp(name, "recover:", 8)) { |
| 383 | ret = create_service_thread(recover_service, (void*) atoi(name + 8)); |
| 384 | } else if (!strncmp(name, "jdwp:", 5)) { |
| 385 | ret = create_jdwp_connection_fd(atoi(name+5)); |
| 386 | } else if (!strncmp(name, "log:", 4)) { |
| 387 | ret = create_service_thread(log_service, get_log_file_path(name + 4)); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 388 | } else if(!HOST && !strncmp(name, "shell:", 6)) { |
Mike Lockwood | cc1de48 | 2009-07-30 16:23:56 -0700 | [diff] [blame^] | 389 | const char* args[2]; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 390 | if(name[6]) { |
Mike Lockwood | cc1de48 | 2009-07-30 16:23:56 -0700 | [diff] [blame^] | 391 | args[0] = "-c"; |
| 392 | args[1] = name + 6; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 393 | } else { |
Mike Lockwood | cc1de48 | 2009-07-30 16:23:56 -0700 | [diff] [blame^] | 394 | args[0] = "-"; |
| 395 | args[1] = 0; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 396 | } |
Mike Lockwood | cc1de48 | 2009-07-30 16:23:56 -0700 | [diff] [blame^] | 397 | ret = create_service_thread(shell_service, (void *)args); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 398 | } else if(!strncmp(name, "sync:", 5)) { |
| 399 | ret = create_service_thread(file_sync_service, NULL); |
| 400 | } else if(!strncmp(name, "remount:", 8)) { |
| 401 | ret = create_service_thread(remount_service, NULL); |
The Android Open Source Project | e037fd7 | 2009-03-13 13:04:37 -0700 | [diff] [blame] | 402 | } else if(!strncmp(name, "root:", 5)) { |
| 403 | ret = create_service_thread(restart_root_service, NULL); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 404 | #endif |
| 405 | #if 0 |
| 406 | } else if(!strncmp(name, "echo:", 5)){ |
| 407 | ret = create_service_thread(echo_service, 0); |
| 408 | #endif |
| 409 | } |
| 410 | if (ret >= 0) { |
| 411 | close_on_exec(ret); |
| 412 | } |
| 413 | return ret; |
| 414 | } |
| 415 | |
| 416 | #if ADB_HOST |
| 417 | struct state_info { |
| 418 | transport_type transport; |
| 419 | char* serial; |
| 420 | int state; |
| 421 | }; |
| 422 | |
| 423 | static void wait_for_state(int fd, void* cookie) |
| 424 | { |
| 425 | struct state_info* sinfo = cookie; |
| 426 | char* err = "unknown error"; |
| 427 | |
| 428 | D("wait_for_state %d\n", sinfo->state); |
| 429 | |
| 430 | atransport *t = acquire_one_transport(sinfo->state, sinfo->transport, sinfo->serial, &err); |
| 431 | if(t != 0) { |
| 432 | writex(fd, "OKAY", 4); |
| 433 | } else { |
| 434 | sendfailmsg(fd, err); |
| 435 | } |
| 436 | |
| 437 | if (sinfo->serial) |
| 438 | free(sinfo->serial); |
| 439 | free(sinfo); |
| 440 | adb_close(fd); |
| 441 | D("wait_for_state is done\n"); |
| 442 | } |
| 443 | #endif |
| 444 | |
| 445 | #if ADB_HOST |
| 446 | asocket* host_service_to_socket(const char* name, const char *serial) |
| 447 | { |
| 448 | if (!strcmp(name,"track-devices")) { |
| 449 | return create_device_tracker(); |
| 450 | } else if (!strncmp(name, "wait-for-", strlen("wait-for-"))) { |
| 451 | struct state_info* sinfo = malloc(sizeof(struct state_info)); |
| 452 | |
| 453 | if (serial) |
| 454 | sinfo->serial = strdup(serial); |
| 455 | else |
| 456 | sinfo->serial = NULL; |
| 457 | |
| 458 | name += strlen("wait-for-"); |
| 459 | |
| 460 | if (!strncmp(name, "local", strlen("local"))) { |
| 461 | sinfo->transport = kTransportLocal; |
| 462 | sinfo->state = CS_DEVICE; |
| 463 | } else if (!strncmp(name, "usb", strlen("usb"))) { |
| 464 | sinfo->transport = kTransportUsb; |
| 465 | sinfo->state = CS_DEVICE; |
| 466 | } else if (!strncmp(name, "any", strlen("any"))) { |
| 467 | sinfo->transport = kTransportAny; |
| 468 | sinfo->state = CS_DEVICE; |
| 469 | } else { |
| 470 | free(sinfo); |
| 471 | return NULL; |
| 472 | } |
| 473 | |
| 474 | int fd = create_service_thread(wait_for_state, sinfo); |
| 475 | return create_local_socket(fd); |
| 476 | } |
| 477 | return NULL; |
| 478 | } |
| 479 | #endif /* ADB_HOST */ |