1 /* 2 * Copyright (C) 2008 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 <sys/socket.h> 19 #include <sys/types.h> 20 #include <netinet/in.h> 21 #include <arpa/inet.h> 22 #include <dirent.h> 23 #include <errno.h> 24 #include <fcntl.h> 25 #include <string.h> 26 27 #define LOG_TAG "VoldCmdListener" 28 #include <cutils/log.h> 29 30 #include <sysutils/SocketClient.h> 31 #include <private/android_filesystem_config.h> 32 33 #include "CommandListener.h" 34 #include "VolumeManager.h" 35 #include "ResponseCode.h" 36 #include "Process.h" 37 #include "Xwarp.h" 38 #include "Loop.h" 39 #include "Devmapper.h" 40 #include "cryptfs.h" 41 42 CommandListener::CommandListener() : 43 FrameworkListener("vold") { 44 registerCmd(new DumpCmd()); 45 registerCmd(new VolumeCmd()); 46 registerCmd(new AsecCmd()); 47 registerCmd(new ObbCmd()); 48 registerCmd(new StorageCmd()); 49 registerCmd(new XwarpCmd()); 50 registerCmd(new CryptfsCmd()); 51 } 52 53 void CommandListener::dumpArgs(int argc, char **argv, int argObscure) { 54 char buffer[4096]; 55 char *p = buffer; 56 57 memset(buffer, 0, sizeof(buffer)); 58 int i; 59 for (i = 0; i < argc; i++) { 60 unsigned int len = strlen(argv[i]) + 1; // Account for space 61 if (i == argObscure) { 62 len += 2; // Account for {} 63 } 64 if (((p - buffer) + len) < (sizeof(buffer)-1)) { 65 if (i == argObscure) { 66 *p++ = '{'; 67 *p++ = '}'; 68 *p++ = ' '; 69 continue; 70 } 71 strcpy(p, argv[i]); 72 p+= strlen(argv[i]); 73 if (i != (argc -1)) { 74 *p++ = ' '; 75 } 76 } 77 } 78 SLOGD("%s", buffer); 79 } 80 81 CommandListener::DumpCmd::DumpCmd() : 82 VoldCommand("dump") { 83 } 84 85 int CommandListener::DumpCmd::runCommand(SocketClient *cli, 86 int argc, char **argv) { 87 cli->sendMsg(0, "Dumping loop status", false); 88 if (Loop::dumpState(cli)) { 89 cli->sendMsg(ResponseCode::CommandOkay, "Loop dump failed", true); 90 } 91 cli->sendMsg(0, "Dumping DM status", false); 92 if (Devmapper::dumpState(cli)) { 93 cli->sendMsg(ResponseCode::CommandOkay, "Devmapper dump failed", true); 94 } 95 cli->sendMsg(0, "Dumping mounted filesystems", false); 96 FILE *fp = fopen("/proc/mounts", "r"); 97 if (fp) { 98 char line[1024]; 99 while (fgets(line, sizeof(line), fp)) { 100 line[strlen(line)-1] = '\0'; 101 cli->sendMsg(0, line, false);; 102 } 103 fclose(fp); 104 } 105 106 cli->sendMsg(ResponseCode::CommandOkay, "dump complete", false); 107 return 0; 108 } 109 110 111 CommandListener::VolumeCmd::VolumeCmd() : 112 VoldCommand("volume") { 113 } 114 115 int CommandListener::VolumeCmd::runCommand(SocketClient *cli, 116 int argc, char **argv) { 117 dumpArgs(argc, argv, -1); 118 119 if (argc < 2) { 120 cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false); 121 return 0; 122 } 123 124 VolumeManager *vm = VolumeManager::Instance(); 125 int rc = 0; 126 127 if (!strcmp(argv[1], "list")) { 128 return vm->listVolumes(cli); 129 } else if (!strcmp(argv[1], "debug")) { 130 if (argc != 3 || (argc == 3 && (strcmp(argv[2], "off") && strcmp(argv[2], "on")))) { 131 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: volume debug <off/on>", false); 132 return 0; 133 } 134 vm->setDebug(!strcmp(argv[2], "on") ? true : false); 135 } else if (!strcmp(argv[1], "mount")) { 136 if (argc != 3) { 137 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: volume mount <path>", false); 138 return 0; 139 } 140 rc = vm->mountVolume(argv[2]); 141 } else if (!strcmp(argv[1], "unmount")) { 142 if (argc < 3 || argc > 4 || 143 ((argc == 4 && strcmp(argv[3], "force")) && 144 (argc == 4 && strcmp(argv[3], "force_and_revert")))) { 145 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: volume unmount <path> [force|force_and_revert]", false); 146 return 0; 147 } 148 149 bool force = false; 150 bool revert = false; 151 if (argc >= 4 && !strcmp(argv[3], "force")) { 152 force = true; 153 } else if (argc >= 4 && !strcmp(argv[3], "force_and_revert")) { 154 force = true; 155 revert = true; 156 } 157 rc = vm->unmountVolume(argv[2], force, revert); 158 } else if (!strcmp(argv[1], "format")) { 159 if (argc != 3) { 160 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: volume format <path>", false); 161 return 0; 162 } 163 rc = vm->formatVolume(argv[2]); 164 } else if (!strcmp(argv[1], "share")) { 165 if (argc != 4) { 166 cli->sendMsg(ResponseCode::CommandSyntaxError, 167 "Usage: volume share <path> <method>", false); 168 return 0; 169 } 170 rc = vm->shareVolume(argv[2], argv[3]); 171 } else if (!strcmp(argv[1], "unshare")) { 172 if (argc != 4) { 173 cli->sendMsg(ResponseCode::CommandSyntaxError, 174 "Usage: volume unshare <path> <method>", false); 175 return 0; 176 } 177 rc = vm->unshareVolume(argv[2], argv[3]); 178 } else if (!strcmp(argv[1], "shared")) { 179 bool enabled = false; 180 if (argc != 4) { 181 cli->sendMsg(ResponseCode::CommandSyntaxError, 182 "Usage: volume shared <path> <method>", false); 183 return 0; 184 } 185 186 if (vm->shareEnabled(argv[2], argv[3], &enabled)) { 187 cli->sendMsg( 188 ResponseCode::OperationFailed, "Failed to determine share enable state", true); 189 } else { 190 cli->sendMsg(ResponseCode::ShareEnabledResult, 191 (enabled ? "Share enabled" : "Share disabled"), false); 192 } 193 return 0; 194 } else { 195 cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown volume cmd", false); 196 } 197 198 if (!rc) { 199 cli->sendMsg(ResponseCode::CommandOkay, "volume operation succeeded", false); 200 } else { 201 int erno = errno; 202 rc = ResponseCode::convertFromErrno(); 203 cli->sendMsg(rc, "volume operation failed", true); 204 } 205 206 return 0; 207 } 208 209 CommandListener::StorageCmd::StorageCmd() : 210 VoldCommand("storage") { 211 } 212 213 int CommandListener::StorageCmd::runCommand(SocketClient *cli, 214 int argc, char **argv) { 215 dumpArgs(argc, argv, -1); 216 217 if (argc < 2) { 218 cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false); 219 return 0; 220 } 221 222 if (!strcmp(argv[1], "users")) { 223 DIR *dir; 224 struct dirent *de; 225 226 if (!(dir = opendir("/proc"))) { 227 cli->sendMsg(ResponseCode::OperationFailed, "Failed to open /proc", true); 228 return 0; 229 } 230 231 while ((de = readdir(dir))) { 232 int pid = Process::getPid(de->d_name); 233 234 if (pid < 0) { 235 continue; 236 } 237 238 char processName[255]; 239 Process::getProcessName(pid, processName, sizeof(processName)); 240 241 if (Process::checkFileDescriptorSymLinks(pid, argv[2]) || 242 Process::checkFileMaps(pid, argv[2]) || 243 Process::checkSymLink(pid, argv[2], "cwd") || 244 Process::checkSymLink(pid, argv[2], "root") || 245 Process::checkSymLink(pid, argv[2], "exe")) { 246 247 char msg[1024]; 248 snprintf(msg, sizeof(msg), "%d %s", pid, processName); 249 cli->sendMsg(ResponseCode::StorageUsersListResult, msg, false); 250 } 251 } 252 closedir(dir); 253 cli->sendMsg(ResponseCode::CommandOkay, "Storage user list complete", false); 254 } else { 255 cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown storage cmd", false); 256 } 257 return 0; 258 } 259 260 CommandListener::AsecCmd::AsecCmd() : 261 VoldCommand("asec") { 262 } 263 264 int CommandListener::AsecCmd::runCommand(SocketClient *cli, 265 int argc, char **argv) { 266 if (argc < 2) { 267 cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false); 268 return 0; 269 } 270 271 VolumeManager *vm = VolumeManager::Instance(); 272 int rc = 0; 273 274 if (!strcmp(argv[1], "list")) { 275 dumpArgs(argc, argv, -1); 276 DIR *d = opendir(Volume::SEC_ASECDIR); 277 278 if (!d) { 279 cli->sendMsg(ResponseCode::OperationFailed, "Failed to open asec dir", true); 280 return 0; 281 } 282 283 struct dirent *dent; 284 while ((dent = readdir(d))) { 285 if (dent->d_name[0] == '.') 286 continue; 287 if (!strcmp(&dent->d_name[strlen(dent->d_name)-5], ".asec")) { 288 char id[255]; 289 memset(id, 0, sizeof(id)); 290 strncpy(id, dent->d_name, strlen(dent->d_name) -5); 291 cli->sendMsg(ResponseCode::AsecListResult, id, false); 292 } 293 } 294 closedir(d); 295 } else if (!strcmp(argv[1], "create")) { 296 dumpArgs(argc, argv, 5); 297 if (argc != 7) { 298 cli->sendMsg(ResponseCode::CommandSyntaxError, 299 "Usage: asec create <container-id> <size_mb> <fstype> <key> <ownerUid>", false); 300 return 0; 301 } 302 303 unsigned int numSectors = (atoi(argv[3]) * (1024 * 1024)) / 512; 304 rc = vm->createAsec(argv[2], numSectors, argv[4], argv[5], atoi(argv[6])); 305 } else if (!strcmp(argv[1], "finalize")) { 306 dumpArgs(argc, argv, -1); 307 if (argc != 3) { 308 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec finalize <container-id>", false); 309 return 0; 310 } 311 rc = vm->finalizeAsec(argv[2]); 312 } else if (!strcmp(argv[1], "destroy")) { 313 dumpArgs(argc, argv, -1); 314 if (argc < 3) { 315 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec destroy <container-id> [force]", false); 316 return 0; 317 } 318 bool force = false; 319 if (argc > 3 && !strcmp(argv[3], "force")) { 320 force = true; 321 } 322 rc = vm->destroyAsec(argv[2], force); 323 } else if (!strcmp(argv[1], "mount")) { 324 dumpArgs(argc, argv, 3); 325 if (argc != 5) { 326 cli->sendMsg(ResponseCode::CommandSyntaxError, 327 "Usage: asec mount <namespace-id> <key> <ownerUid>", false); 328 return 0; 329 } 330 rc = vm->mountAsec(argv[2], argv[3], atoi(argv[4])); 331 } else if (!strcmp(argv[1], "unmount")) { 332 dumpArgs(argc, argv, -1); 333 if (argc < 3) { 334 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec unmount <container-id> [force]", false); 335 return 0; 336 } 337 bool force = false; 338 if (argc > 3 && !strcmp(argv[3], "force")) { 339 force = true; 340 } 341 rc = vm->unmountAsec(argv[2], force); 342 } else if (!strcmp(argv[1], "rename")) { 343 dumpArgs(argc, argv, -1); 344 if (argc != 4) { 345 cli->sendMsg(ResponseCode::CommandSyntaxError, 346 "Usage: asec rename <old_id> <new_id>", false); 347 return 0; 348 } 349 rc = vm->renameAsec(argv[2], argv[3]); 350 } else if (!strcmp(argv[1], "path")) { 351 dumpArgs(argc, argv, -1); 352 if (argc != 3) { 353 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec path <container-id>", false); 354 return 0; 355 } 356 char path[255]; 357 358 if (!(rc = vm->getAsecMountPath(argv[2], path, sizeof(path)))) { 359 cli->sendMsg(ResponseCode::AsecPathResult, path, false); 360 return 0; 361 } 362 } else if (!strcmp(argv[1], "fspath")) { 363 dumpArgs(argc, argv, -1); 364 if (argc != 3) { 365 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec fspath <container-id>", false); 366 return 0; 367 } 368 char path[255]; 369 370 if (!(rc = vm->getAsecFilesystemPath(argv[2], path, sizeof(path)))) { 371 cli->sendMsg(ResponseCode::AsecPathResult, path, false); 372 return 0; 373 } 374 } else { 375 dumpArgs(argc, argv, -1); 376 cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown asec cmd", false); 377 } 378 379 if (!rc) { 380 cli->sendMsg(ResponseCode::CommandOkay, "asec operation succeeded", false); 381 } else { 382 rc = ResponseCode::convertFromErrno(); 383 cli->sendMsg(rc, "asec operation failed", true); 384 } 385 386 return 0; 387 } 388 389 CommandListener::ObbCmd::ObbCmd() : 390 VoldCommand("obb") { 391 } 392 393 int CommandListener::ObbCmd::runCommand(SocketClient *cli, 394 int argc, char **argv) { 395 if (argc < 2) { 396 cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false); 397 return 0; 398 } 399 400 VolumeManager *vm = VolumeManager::Instance(); 401 int rc = 0; 402 403 if (!strcmp(argv[1], "list")) { 404 dumpArgs(argc, argv, -1); 405 406 rc = vm->listMountedObbs(cli); 407 } else if (!strcmp(argv[1], "mount")) { 408 dumpArgs(argc, argv, 3); 409 if (argc != 5) { 410 cli->sendMsg(ResponseCode::CommandSyntaxError, 411 "Usage: obb mount <filename> <key> <ownerUid>", false); 412 return 0; 413 } 414 rc = vm->mountObb(argv[2], argv[3], atoi(argv[4])); 415 } else if (!strcmp(argv[1], "unmount")) { 416 dumpArgs(argc, argv, -1); 417 if (argc < 3) { 418 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: obb unmount <source file> [force]", false); 419 return 0; 420 } 421 bool force = false; 422 if (argc > 3 && !strcmp(argv[3], "force")) { 423 force = true; 424 } 425 rc = vm->unmountObb(argv[2], force); 426 } else if (!strcmp(argv[1], "path")) { 427 dumpArgs(argc, argv, -1); 428 if (argc != 3) { 429 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: obb path <source file>", false); 430 return 0; 431 } 432 char path[255]; 433 434 if (!(rc = vm->getObbMountPath(argv[2], path, sizeof(path)))) { 435 cli->sendMsg(ResponseCode::AsecPathResult, path, false); 436 return 0; 437 } 438 } else { 439 dumpArgs(argc, argv, -1); 440 cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown obb cmd", false); 441 } 442 443 if (!rc) { 444 cli->sendMsg(ResponseCode::CommandOkay, "obb operation succeeded", false); 445 } else { 446 rc = ResponseCode::convertFromErrno(); 447 cli->sendMsg(rc, "obb operation failed", true); 448 } 449 450 return 0; 451 } 452 453 CommandListener::XwarpCmd::XwarpCmd() : 454 VoldCommand("xwarp") { 455 } 456 457 int CommandListener::XwarpCmd::runCommand(SocketClient *cli, 458 int argc, char **argv) { 459 if (argc < 2) { 460 cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false); 461 return 0; 462 } 463 464 if (!strcmp(argv[1], "enable")) { 465 if (Xwarp::enable()) { 466 cli->sendMsg(ResponseCode::OperationFailed, "Failed to enable xwarp", true); 467 return 0; 468 } 469 470 cli->sendMsg(ResponseCode::CommandOkay, "Xwarp mirroring started", false); 471 } else if (!strcmp(argv[1], "disable")) { 472 if (Xwarp::disable()) { 473 cli->sendMsg(ResponseCode::OperationFailed, "Failed to disable xwarp", true); 474 return 0; 475 } 476 477 cli->sendMsg(ResponseCode::CommandOkay, "Xwarp disabled", false); 478 } else if (!strcmp(argv[1], "status")) { 479 char msg[255]; 480 bool r; 481 unsigned mirrorPos, maxSize; 482 483 if (Xwarp::status(&r, &mirrorPos, &maxSize)) { 484 cli->sendMsg(ResponseCode::OperationFailed, "Failed to get xwarp status", true); 485 return 0; 486 } 487 snprintf(msg, sizeof(msg), "%s %u %u", (r ? "ready" : "not-ready"), mirrorPos, maxSize); 488 cli->sendMsg(ResponseCode::XwarpStatusResult, msg, false); 489 } else { 490 cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown storage cmd", false); 491 } 492 493 return 0; 494 } 495 496 CommandListener::CryptfsCmd::CryptfsCmd() : 497 VoldCommand("cryptfs") { 498 } 499 500 int CommandListener::CryptfsCmd::runCommand(SocketClient *cli, 501 int argc, char **argv) { 502 if ((cli->getUid() != 0) && (cli->getUid() != AID_SYSTEM)) { 503 cli->sendMsg(ResponseCode::CommandNoPermission, "No permission to run cryptfs commands", false); 504 return 0; 505 } 506 507 if (argc < 2) { 508 cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false); 509 return 0; 510 } 511 512 int rc = 0; 513 514 if (!strcmp(argv[1], "checkpw")) { 515 if (argc != 3) { 516 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs checkpw <passwd>", false); 517 return 0; 518 } 519 dumpArgs(argc, argv, 2); 520 rc = cryptfs_check_passwd(argv[2]); 521 } else if (!strcmp(argv[1], "restart")) { 522 if (argc != 2) { 523 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs restart", false); 524 return 0; 525 } 526 dumpArgs(argc, argv, -1); 527 rc = cryptfs_restart(); 528 } else if (!strcmp(argv[1], "cryptocomplete")) { 529 if (argc != 2) { 530 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs cryptocomplete", false); 531 return 0; 532 } 533 dumpArgs(argc, argv, -1); 534 rc = cryptfs_crypto_complete(); 535 } else if (!strcmp(argv[1], "enablecrypto")) { 536 if ( (argc != 4) || (strcmp(argv[2], "wipe") && strcmp(argv[2], "inplace")) ) { 537 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs enablecrypto <wipe|inplace> <passwd>", false); 538 return 0; 539 } 540 dumpArgs(argc, argv, 3); 541 rc = cryptfs_enable(argv[2], argv[3]); 542 } else if (!strcmp(argv[1], "changepw")) { 543 if (argc != 3) { 544 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs changepw <newpasswd>", false); 545 return 0; 546 } 547 SLOGD("cryptfs changepw {}"); 548 rc = cryptfs_changepw(argv[2]); 549 } else if (!strcmp(argv[1], "verifypw")) { 550 if (argc != 3) { 551 cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs verifypw <passwd>", false); 552 return 0; 553 } 554 SLOGD("cryptfs verifypw {}"); 555 rc = cryptfs_verify_passwd(argv[2]); 556 } else { 557 dumpArgs(argc, argv, -1); 558 cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown cryptfs cmd", false); 559 } 560 561 // Always report that the command succeeded and return the error code. 562 // The caller will check the return value to see what the error was. 563 char msg[255]; 564 snprintf(msg, sizeof(msg), "%d", rc); 565 cli->sendMsg(ResponseCode::CommandOkay, msg, false); 566 567 return 0; 568 } 569 570
