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 #define TRACE_TAG TRACE_ADB 18 19 #include <stdio.h> 20 #include <stdlib.h> 21 #include <ctype.h> 22 #include <stdarg.h> 23 #include <errno.h> 24 #include <string.h> 25 #include <time.h> 26 #include <sys/time.h> 27 28 #include "sysdeps.h" 29 #include "adb.h" 30 31 #if !ADB_HOST 32 #include <private/android_filesystem_config.h> 33 #include <linux/capability.h> 34 #include <linux/prctl.h> 35 #else 36 #include "usb_vendors.h" 37 #endif 38 39 40 int HOST = 0; 41 42 static const char *adb_device_banner = "device"; 43 44 void fatal(const char *fmt, ...) 45 { 46 va_list ap; 47 va_start(ap, fmt); 48 fprintf(stderr, "error: "); 49 vfprintf(stderr, fmt, ap); 50 fprintf(stderr, "\n"); 51 va_end(ap); 52 exit(-1); 53 } 54 55 void fatal_errno(const char *fmt, ...) 56 { 57 va_list ap; 58 va_start(ap, fmt); 59 fprintf(stderr, "error: %s: ", strerror(errno)); 60 vfprintf(stderr, fmt, ap); 61 fprintf(stderr, "\n"); 62 va_end(ap); 63 exit(-1); 64 } 65 66 int adb_trace_mask; 67 68 /* read a comma/space/colum/semi-column separated list of tags 69 * from the ADB_TRACE environment variable and build the trace 70 * mask from it. note that '1' and 'all' are special cases to 71 * enable all tracing 72 */ 73 void adb_trace_init(void) 74 { 75 const char* p = getenv("ADB_TRACE"); 76 const char* q; 77 78 static const struct { 79 const char* tag; 80 int flag; 81 } tags[] = { 82 { "1", 0 }, 83 { "all", 0 }, 84 { "adb", TRACE_ADB }, 85 { "sockets", TRACE_SOCKETS }, 86 { "packets", TRACE_PACKETS }, 87 { "rwx", TRACE_RWX }, 88 { "usb", TRACE_USB }, 89 { "sync", TRACE_SYNC }, 90 { "sysdeps", TRACE_SYSDEPS }, 91 { "transport", TRACE_TRANSPORT }, 92 { "jdwp", TRACE_JDWP }, 93 { NULL, 0 } 94 }; 95 96 if (p == NULL) 97 return; 98 99 /* use a comma/column/semi-colum/space separated list */ 100 while (*p) { 101 int len, tagn; 102 103 q = strpbrk(p, " ,:;"); 104 if (q == NULL) { 105 q = p + strlen(p); 106 } 107 len = q - p; 108 109 for (tagn = 0; tags[tagn].tag != NULL; tagn++) 110 { 111 int taglen = strlen(tags[tagn].tag); 112 113 if (len == taglen && !memcmp(tags[tagn].tag, p, len) ) 114 { 115 int flag = tags[tagn].flag; 116 if (flag == 0) { 117 adb_trace_mask = ~0; 118 return; 119 } 120 adb_trace_mask |= (1 << flag); 121 break; 122 } 123 } 124 p = q; 125 if (*p) 126 p++; 127 } 128 } 129 130 131 apacket *get_apacket(void) 132 { 133 apacket *p = malloc(sizeof(apacket)); 134 if(p == 0) fatal("failed to allocate an apacket"); 135 memset(p, 0, sizeof(apacket) - MAX_PAYLOAD); 136 return p; 137 } 138 139 void put_apacket(apacket *p) 140 { 141 free(p); 142 } 143 144 void handle_online(void) 145 { 146 D("adb: online\n"); 147 } 148 149 void handle_offline(atransport *t) 150 { 151 D("adb: offline\n"); 152 //Close the associated usb 153 run_transport_disconnects(t); 154 } 155 156 #if TRACE_PACKETS 157 #define DUMPMAX 32 158 void print_packet(const char *label, apacket *p) 159 { 160 char *tag; 161 char *x; 162 unsigned count; 163 164 switch(p->msg.command){ 165 case A_SYNC: tag = "SYNC"; break; 166 case A_CNXN: tag = "CNXN" ; break; 167 case A_OPEN: tag = "OPEN"; break; 168 case A_OKAY: tag = "OKAY"; break; 169 case A_CLSE: tag = "CLSE"; break; 170 case A_WRTE: tag = "WRTE"; break; 171 default: tag = "????"; break; 172 } 173 174 fprintf(stderr, "%s: %s %08x %08x %04x \"", 175 label, tag, p->msg.arg0, p->msg.arg1, p->msg.data_length); 176 count = p->msg.data_length; 177 x = (char*) p->data; 178 if(count > DUMPMAX) { 179 count = DUMPMAX; 180 tag = "\n"; 181 } else { 182 tag = "\"\n"; 183 } 184 while(count-- > 0){ 185 if((*x >= ' ') && (*x < 127)) { 186 fputc(*x, stderr); 187 } else { 188 fputc('.', stderr); 189 } 190 x++; 191 } 192 fprintf(stderr, tag); 193 } 194 #endif 195 196 static void send_ready(unsigned local, unsigned remote, atransport *t) 197 { 198 D("Calling send_ready \n"); 199 apacket *p = get_apacket(); 200 p->msg.command = A_OKAY; 201 p->msg.arg0 = local; 202 p->msg.arg1 = remote; 203 send_packet(p, t); 204 } 205 206 static void send_close(unsigned local, unsigned remote, atransport *t) 207 { 208 D("Calling send_close \n"); 209 apacket *p = get_apacket(); 210 p->msg.command = A_CLSE; 211 p->msg.arg0 = local; 212 p->msg.arg1 = remote; 213 send_packet(p, t); 214 } 215 216 static void send_connect(atransport *t) 217 { 218 D("Calling send_connect \n"); 219 apacket *cp = get_apacket(); 220 cp->msg.command = A_CNXN; 221 cp->msg.arg0 = A_VERSION; 222 cp->msg.arg1 = MAX_PAYLOAD; 223 snprintf((char*) cp->data, sizeof cp->data, "%s::", 224 HOST ? "host" : adb_device_banner); 225 cp->msg.data_length = strlen((char*) cp->data) + 1; 226 send_packet(cp, t); 227 #if ADB_HOST 228 /* XXX why sleep here? */ 229 // allow the device some time to respond to the connect message 230 adb_sleep_ms(1000); 231 #endif 232 } 233 234 static char *connection_state_name(atransport *t) 235 { 236 if (t == NULL) { 237 return "unknown"; 238 } 239 240 switch(t->connection_state) { 241 case CS_BOOTLOADER: 242 return "bootloader"; 243 case CS_DEVICE: 244 return "device"; 245 case CS_OFFLINE: 246 return "offline"; 247 default: 248 return "unknown"; 249 } 250 } 251 252 void parse_banner(char *banner, atransport *t) 253 { 254 char *type, *product, *end; 255 256 D("parse_banner: %s\n", banner); 257 type = banner; 258 product = strchr(type, ':'); 259 if(product) { 260 *product++ = 0; 261 } else { 262 product = ""; 263 } 264 265 /* remove trailing ':' */ 266 end = strchr(product, ':'); 267 if(end) *end = 0; 268 269 /* save product name in device structure */ 270 if (t->product == NULL) { 271 t->product = strdup(product); 272 } else if (strcmp(product, t->product) != 0) { 273 free(t->product); 274 t->product = strdup(product); 275 } 276 277 if(!strcmp(type, "bootloader")){ 278 D("setting connection_state to CS_BOOTLOADER\n"); 279 t->connection_state = CS_BOOTLOADER; 280 update_transports(); 281 return; 282 } 283 284 if(!strcmp(type, "device")) { 285 D("setting connection_state to CS_DEVICE\n"); 286 t->connection_state = CS_DEVICE; 287 update_transports(); 288 return; 289 } 290 291 if(!strcmp(type, "recovery")) { 292 D("setting connection_state to CS_RECOVERY\n"); 293 t->connection_state = CS_RECOVERY; 294 update_transports(); 295 return; 296 } 297 298 t->connection_state = CS_HOST; 299 } 300 301 void handle_packet(apacket *p, atransport *t) 302 { 303 asocket *s; 304 305 D("handle_packet() %d\n", p->msg.command); 306 307 print_packet("recv", p); 308 309 switch(p->msg.command){ 310 case A_SYNC: 311 if(p->msg.arg0){ 312 send_packet(p, t); 313 if(HOST) send_connect(t); 314 } else { 315 t->connection_state = CS_OFFLINE; 316 handle_offline(t); 317 send_packet(p, t); 318 } 319 return; 320 321 case A_CNXN: /* CONNECT(version, maxdata, "system-id-string") */ 322 /* XXX verify version, etc */ 323 if(t->connection_state != CS_OFFLINE) { 324 t->connection_state = CS_OFFLINE; 325 handle_offline(t); 326 } 327 parse_banner((char*) p->data, t); 328 handle_online(); 329 if(!HOST) send_connect(t); 330 break; 331 332 case A_OPEN: /* OPEN(local-id, 0, "destination") */ 333 if(t->connection_state != CS_OFFLINE) { 334 char *name = (char*) p->data; 335 name[p->msg.data_length > 0 ? p->msg.data_length - 1 : 0] = 0; 336 s = create_local_service_socket(name); 337 if(s == 0) { 338 send_close(0, p->msg.arg0, t); 339 } else { 340 s->peer = create_remote_socket(p->msg.arg0, t); 341 s->peer->peer = s; 342 send_ready(s->id, s->peer->id, t); 343 s->ready(s); 344 } 345 } 346 break; 347 348 case A_OKAY: /* READY(local-id, remote-id, "") */ 349 if(t->connection_state != CS_OFFLINE) { 350 if((s = find_local_socket(p->msg.arg1))) { 351 if(s->peer == 0) { 352 s->peer = create_remote_socket(p->msg.arg0, t); 353 s->peer->peer = s; 354 } 355 s->ready(s); 356 } 357 } 358 break; 359 360 case A_CLSE: /* CLOSE(local-id, remote-id, "") */ 361 if(t->connection_state != CS_OFFLINE) { 362 if((s = find_local_socket(p->msg.arg1))) { 363 s->close(s); 364 } 365 } 366 break; 367 368 case A_WRTE: 369 if(t->connection_state != CS_OFFLINE) { 370 if((s = find_local_socket(p->msg.arg1))) { 371 unsigned rid = p->msg.arg0; 372 p->len = p->msg.data_length; 373 374 if(s->enqueue(s, p) == 0) { 375 D("Enqueue the socket\n"); 376 send_ready(s->id, rid, t); 377 } 378 return; 379 } 380 } 381 break; 382 383 default: 384 printf("handle_packet: what is %08x?!\n", p->msg.command); 385 } 386 387 put_apacket(p); 388 } 389 390 alistener listener_list = { 391 .next = &listener_list, 392 .prev = &listener_list, 393 }; 394 395 static void ss_listener_event_func(int _fd, unsigned ev, void *_l) 396 { 397 asocket *s; 398 399 if(ev & FDE_READ) { 400 struct sockaddr addr; 401 socklen_t alen; 402 int fd; 403 404 alen = sizeof(addr); 405 fd = adb_socket_accept(_fd, &addr, &alen); 406 if(fd < 0) return; 407 408 adb_socket_setbufsize(fd, CHUNK_SIZE); 409 410 s = create_local_socket(fd); 411 if(s) { 412 connect_to_smartsocket(s); 413 return; 414 } 415 416 adb_close(fd); 417 } 418 } 419 420 static void listener_event_func(int _fd, unsigned ev, void *_l) 421 { 422 alistener *l = _l; 423 asocket *s; 424 425 if(ev & FDE_READ) { 426 struct sockaddr addr; 427 socklen_t alen; 428 int fd; 429 430 alen = sizeof(addr); 431 fd = adb_socket_accept(_fd, &addr, &alen); 432 if(fd < 0) return; 433 434 s = create_local_socket(fd); 435 if(s) { 436 s->transport = l->transport; 437 connect_to_remote(s, l->connect_to); 438 return; 439 } 440 441 adb_close(fd); 442 } 443 } 444 445 static void free_listener(alistener* l) 446 { 447 if (l->next) { 448 l->next->prev = l->prev; 449 l->prev->next = l->next; 450 l->next = l->prev = l; 451 } 452 453 // closes the corresponding fd 454 fdevent_remove(&l->fde); 455 456 if (l->local_name) 457 free((char*)l->local_name); 458 459 if (l->connect_to) 460 free((char*)l->connect_to); 461 462 if (l->transport) { 463 remove_transport_disconnect(l->transport, &l->disconnect); 464 } 465 free(l); 466 } 467 468 static void listener_disconnect(void* _l, atransport* t) 469 { 470 alistener* l = _l; 471 472 free_listener(l); 473 } 474 475 int local_name_to_fd(const char *name) 476 { 477 int port; 478 479 if(!strncmp("tcp:", name, 4)){ 480 int ret; 481 port = atoi(name + 4); 482 ret = socket_loopback_server(port, SOCK_STREAM); 483 return ret; 484 } 485 #ifndef HAVE_WIN32_IPC /* no Unix-domain sockets on Win32 */ 486 // It's non-sensical to support the "reserved" space on the adb host side 487 if(!strncmp(name, "local:", 6)) { 488 return socket_local_server(name + 6, 489 ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); 490 } else if(!strncmp(name, "localabstract:", 14)) { 491 return socket_local_server(name + 14, 492 ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); 493 } else if(!strncmp(name, "localfilesystem:", 16)) { 494 return socket_local_server(name + 16, 495 ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM); 496 } 497 498 #endif 499 printf("unknown local portname '%s'\n", name); 500 return -1; 501 } 502 503 static int remove_listener(const char *local_name, const char *connect_to, atransport* transport) 504 { 505 alistener *l; 506 507 for (l = listener_list.next; l != &listener_list; l = l->next) { 508 if (!strcmp(local_name, l->local_name) && 509 !strcmp(connect_to, l->connect_to) && 510 l->transport && l->transport == transport) { 511 512 listener_disconnect(l, transport); 513 return 0; 514 } 515 } 516 517 return -1; 518 } 519 520 static int install_listener(const char *local_name, const char *connect_to, atransport* transport) 521 { 522 alistener *l; 523 524 //printf("install_listener('%s','%s')\n", local_name, connect_to); 525 526 for(l = listener_list.next; l != &listener_list; l = l->next){ 527 if(strcmp(local_name, l->local_name) == 0) { 528 char *cto; 529 530 /* can't repurpose a smartsocket */ 531 if(l->connect_to[0] == '*') { 532 return -1; 533 } 534 535 cto = strdup(connect_to); 536 if(cto == 0) { 537 return -1; 538 } 539 540 //printf("rebinding '%s' to '%s'\n", local_name, connect_to); 541 free((void*) l->connect_to); 542 l->connect_to = cto; 543 if (l->transport != transport) { 544 remove_transport_disconnect(l->transport, &l->disconnect); 545 l->transport = transport; 546 add_transport_disconnect(l->transport, &l->disconnect); 547 } 548 return 0; 549 } 550 } 551 552 if((l = calloc(1, sizeof(alistener))) == 0) goto nomem; 553 if((l->local_name = strdup(local_name)) == 0) goto nomem; 554 if((l->connect_to = strdup(connect_to)) == 0) goto nomem; 555 556 557 l->fd = local_name_to_fd(local_name); 558 if(l->fd < 0) { 559 free((void*) l->local_name); 560 free((void*) l->connect_to); 561 free(l); 562 printf("cannot bind '%s'\n", local_name); 563 return -2; 564 } 565 566 close_on_exec(l->fd); 567 if(!strcmp(l->connect_to, "*smartsocket*")) { 568 fdevent_install(&l->fde, l->fd, ss_listener_event_func, l); 569 } else { 570 fdevent_install(&l->fde, l->fd, listener_event_func, l); 571 } 572 fdevent_set(&l->fde, FDE_READ); 573 574 l->next = &listener_list; 575 l->prev = listener_list.prev; 576 l->next->prev = l; 577 l->prev->next = l; 578 l->transport = transport; 579 580 if (transport) { 581 l->disconnect.opaque = l; 582 l->disconnect.func = listener_disconnect; 583 add_transport_disconnect(transport, &l->disconnect); 584 } 585 return 0; 586 587 nomem: 588 fatal("cannot allocate listener"); 589 return 0; 590 } 591 592 #ifdef HAVE_FORKEXEC 593 static void sigchld_handler(int n) 594 { 595 int status; 596 while(waitpid(-1, &status, WNOHANG) > 0) ; 597 } 598 #endif 599 600 #ifdef HAVE_WIN32_PROC 601 static BOOL WINAPI ctrlc_handler(DWORD type) 602 { 603 exit(STATUS_CONTROL_C_EXIT); 604 return TRUE; 605 } 606 #endif 607 608 static void adb_cleanup(void) 609 { 610 usb_cleanup(); 611 } 612 613 void start_logging(void) 614 { 615 #ifdef HAVE_WIN32_PROC 616 char temp[ MAX_PATH ]; 617 FILE* fnul; 618 FILE* flog; 619 620 GetTempPath( sizeof(temp) - 8, temp ); 621 strcat( temp, "adb.log" ); 622 623 /* Win32 specific redirections */ 624 fnul = fopen( "NUL", "rt" ); 625 if (fnul != NULL) 626 stdin[0] = fnul[0]; 627 628 flog = fopen( temp, "at" ); 629 if (flog == NULL) 630 flog = fnul; 631 632 setvbuf( flog, NULL, _IONBF, 0 ); 633 634 stdout[0] = flog[0]; 635 stderr[0] = flog[0]; 636 fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid()); 637 #else 638 int fd; 639 640 fd = unix_open("/dev/null", O_RDONLY); 641 dup2(fd, 0); 642 643 fd = unix_open("/tmp/adb.log", O_WRONLY | O_CREAT | O_APPEND, 0640); 644 if(fd < 0) { 645 fd = unix_open("/dev/null", O_WRONLY); 646 } 647 dup2(fd, 1); 648 dup2(fd, 2); 649 fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid()); 650 #endif 651 } 652 653 #if !ADB_HOST 654 void start_device_log(void) 655 { 656 int fd; 657 char path[PATH_MAX]; 658 struct tm now; 659 time_t t; 660 char value[PROPERTY_VALUE_MAX]; 661 662 // read the trace mask from persistent property persist.adb.trace_mask 663 // give up if the property is not set or cannot be parsed 664 property_get("persist.adb.trace_mask", value, ""); 665 if (sscanf(value, "%x", &adb_trace_mask) != 1) 666 return; 667 668 adb_mkdir("/data/adb", 0775); 669 tzset(); 670 time(&t); 671 localtime_r(&t, &now); 672 strftime(path, sizeof(path), 673 "/data/adb/adb-%Y-%m-%d-%H-%M-%S.txt", 674 &now); 675 fd = unix_open(path, O_WRONLY | O_CREAT | O_TRUNC, 0640); 676 if (fd < 0) 677 return; 678 679 // redirect stdout and stderr to the log file 680 dup2(fd, 1); 681 dup2(fd, 2); 682 fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid()); 683 684 fd = unix_open("/dev/null", O_RDONLY); 685 dup2(fd, 0); 686 } 687 #endif 688 689 #if ADB_HOST 690 int launch_server(int server_port) 691 { 692 #ifdef HAVE_WIN32_PROC 693 /* we need to start the server in the background */ 694 /* we create a PIPE that will be used to wait for the server's "OK" */ 695 /* message since the pipe handles must be inheritable, we use a */ 696 /* security attribute */ 697 HANDLE pipe_read, pipe_write; 698 SECURITY_ATTRIBUTES sa; 699 STARTUPINFO startup; 700 PROCESS_INFORMATION pinfo; 701 char program_path[ MAX_PATH ]; 702 int ret; 703 704 sa.nLength = sizeof(sa); 705 sa.lpSecurityDescriptor = NULL; 706 sa.bInheritHandle = TRUE; 707 708 /* create pipe, and ensure its read handle isn't inheritable */ 709 ret = CreatePipe( &pipe_read, &pipe_write, &sa, 0 ); 710 if (!ret) { 711 fprintf(stderr, "CreatePipe() failure, error %ld\n", GetLastError() ); 712 return -1; 713 } 714 715 SetHandleInformation( pipe_read, HANDLE_FLAG_INHERIT, 0 ); 716 717 ZeroMemory( &startup, sizeof(startup) ); 718 startup.cb = sizeof(startup); 719 startup.hStdInput = GetStdHandle( STD_INPUT_HANDLE ); 720 startup.hStdOutput = pipe_write; 721 startup.hStdError = GetStdHandle( STD_ERROR_HANDLE ); 722 startup.dwFlags = STARTF_USESTDHANDLES; 723 724 ZeroMemory( &pinfo, sizeof(pinfo) ); 725 726 /* get path of current program */ 727 GetModuleFileName( NULL, program_path, sizeof(program_path) ); 728 729 ret = CreateProcess( 730 program_path, /* program path */ 731 "adb fork-server server", 732 /* the fork-server argument will set the 733 debug = 2 in the child */ 734 NULL, /* process handle is not inheritable */ 735 NULL, /* thread handle is not inheritable */ 736 TRUE, /* yes, inherit some handles */ 737 DETACHED_PROCESS, /* the new process doesn't have a console */ 738 NULL, /* use parent's environment block */ 739 NULL, /* use parent's starting directory */ 740 &startup, /* startup info, i.e. std handles */ 741 &pinfo ); 742 743 CloseHandle( pipe_write ); 744 745 if (!ret) { 746 fprintf(stderr, "CreateProcess failure, error %ld\n", GetLastError() ); 747 CloseHandle( pipe_read ); 748 return -1; 749 } 750 751 CloseHandle( pinfo.hProcess ); 752 CloseHandle( pinfo.hThread ); 753 754 /* wait for the "OK\n" message */ 755 { 756 char temp[3]; 757 DWORD count; 758 759 ret = ReadFile( pipe_read, temp, 3, &count, NULL ); 760 CloseHandle( pipe_read ); 761 if ( !ret ) { 762 fprintf(stderr, "could not read ok from ADB Server, error = %ld\n", GetLastError() ); 763 return -1; 764 } 765 if (count != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') { 766 fprintf(stderr, "ADB server didn't ACK\n" ); 767 return -1; 768 } 769 } 770 #elif defined(HAVE_FORKEXEC) 771 char path[PATH_MAX]; 772 int fd[2]; 773 774 // set up a pipe so the child can tell us when it is ready. 775 // fd[0] will be parent's end, and fd[1] will get mapped to stderr in the child. 776 if (pipe(fd)) { 777 fprintf(stderr, "pipe failed in launch_server, errno: %d\n", errno); 778 return -1; 779 } 780 get_my_path(path, PATH_MAX); 781 pid_t pid = fork(); 782 if(pid < 0) return -1; 783 784 if (pid == 0) { 785 // child side of the fork 786 787 // redirect stderr to the pipe 788 // we use stderr instead of stdout due to stdout's buffering behavior. 789 adb_close(fd[0]); 790 dup2(fd[1], STDERR_FILENO); 791 adb_close(fd[1]); 792 793 // child process 794 int result = execl(path, "adb", "fork-server", "server", NULL); 795 // this should not return 796 fprintf(stderr, "OOPS! execl returned %d, errno: %d\n", result, errno); 797 } else { 798 // parent side of the fork 799 800 char temp[3]; 801 802 temp[0] = 'A'; temp[1] = 'B'; temp[2] = 'C'; 803 // wait for the "OK\n" message 804 adb_close(fd[1]); 805 int ret = adb_read(fd[0], temp, 3); 806 adb_close(fd[0]); 807 if (ret < 0) { 808 fprintf(stderr, "could not read ok from ADB Server, errno = %d\n", errno); 809 return -1; 810 } 811 if (ret != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') { 812 fprintf(stderr, "ADB server didn't ACK\n" ); 813 return -1; 814 } 815 816 setsid(); 817 } 818 #else 819 #error "cannot implement background server start on this platform" 820 #endif 821 return 0; 822 } 823 #endif 824 825 /* Constructs a local name of form tcp:port. 826 * target_str points to the target string, it's content will be overwritten. 827 * target_size is the capacity of the target string. 828 * server_port is the port number to use for the local name. 829 */ 830 void build_local_name(char* target_str, size_t target_size, int server_port) 831 { 832 snprintf(target_str, target_size, "tcp:%d", server_port); 833 } 834 835 int adb_main(int is_daemon, int server_port) 836 { 837 #if !ADB_HOST 838 int secure = 0; 839 int port; 840 char value[PROPERTY_VALUE_MAX]; 841 #endif 842 843 atexit(adb_cleanup); 844 #ifdef HAVE_WIN32_PROC 845 SetConsoleCtrlHandler( ctrlc_handler, TRUE ); 846 #elif defined(HAVE_FORKEXEC) 847 signal(SIGCHLD, sigchld_handler); 848 signal(SIGPIPE, SIG_IGN); 849 #endif 850 851 init_transport_registration(); 852 853 854 #if ADB_HOST 855 HOST = 1; 856 usb_vendors_init(); 857 usb_init(); 858 local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT); 859 860 char local_name[30]; 861 build_local_name(local_name, sizeof(local_name), server_port); 862 if(install_listener(local_name, "*smartsocket*", NULL)) { 863 exit(1); 864 } 865 #else 866 /* run adbd in secure mode if ro.secure is set and 867 ** we are not in the emulator 868 */ 869 property_get("ro.kernel.qemu", value, ""); 870 if (strcmp(value, "1") != 0) { 871 property_get("ro.secure", value, ""); 872 if (strcmp(value, "1") == 0) { 873 // don't run as root if ro.secure is set... 874 secure = 1; 875 876 // ... except we allow running as root in userdebug builds if the 877 // service.adb.root property has been set by the "adb root" command 878 property_get("ro.debuggable", value, ""); 879 if (strcmp(value, "1") == 0) { 880 property_get("service.adb.root", value, ""); 881 if (strcmp(value, "1") == 0) { 882 secure = 0; 883 } 884 } 885 } 886 } 887 888 /* don't listen on a port (default 5037) if running in secure mode */ 889 /* don't run as root if we are running in secure mode */ 890 if (secure) { 891 struct __user_cap_header_struct header; 892 struct __user_cap_data_struct cap; 893 894 if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) != 0) { 895 exit(1); 896 } 897 898 /* add extra groups: 899 ** AID_ADB to access the USB driver 900 ** AID_LOG to read system logs (adb logcat) 901 ** AID_INPUT to diagnose input issues (getevent) 902 ** AID_INET to diagnose network issues (netcfg, ping) 903 ** AID_GRAPHICS to access the frame buffer 904 ** AID_NET_BT and AID_NET_BT_ADMIN to diagnose bluetooth (hcidump) 905 ** AID_SDCARD_RW to allow writing to the SD card 906 ** AID_MOUNT to allow unmounting the SD card before rebooting 907 */ 908 gid_t groups[] = { AID_ADB, AID_LOG, AID_INPUT, AID_INET, AID_GRAPHICS, 909 AID_NET_BT, AID_NET_BT_ADMIN, AID_SDCARD_RW, AID_MOUNT }; 910 if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) { 911 exit(1); 912 } 913 914 /* then switch user and group to "shell" */ 915 if (setgid(AID_SHELL) != 0) { 916 exit(1); 917 } 918 if (setuid(AID_SHELL) != 0) { 919 exit(1); 920 } 921 922 /* set CAP_SYS_BOOT capability, so "adb reboot" will succeed */ 923 header.version = _LINUX_CAPABILITY_VERSION; 924 header.pid = 0; 925 cap.effective = cap.permitted = (1 << CAP_SYS_BOOT); 926 cap.inheritable = 0; 927 capset(&header, &cap); 928 929 D("Local port disabled\n"); 930 } else { 931 char local_name[30]; 932 build_local_name(local_name, sizeof(local_name), server_port); 933 if(install_listener(local_name, "*smartsocket*", NULL)) { 934 exit(1); 935 } 936 } 937 938 /* for the device, start the usb transport if the 939 ** android usb device exists and the "service.adb.tcp.port" and 940 ** "persist.adb.tcp.port" properties are not set. 941 ** Otherwise start the network transport. 942 */ 943 property_get("service.adb.tcp.port", value, ""); 944 if (!value[0]) 945 property_get("persist.adb.tcp.port", value, ""); 946 if (sscanf(value, "%d", &port) == 1 && port > 0) { 947 // listen on TCP port specified by service.adb.tcp.port property 948 local_init(port); 949 } else if (access("/dev/android_adb", F_OK) == 0) { 950 // listen on USB 951 usb_init(); 952 } else { 953 // listen on default port 954 local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT); 955 } 956 init_jdwp(); 957 #endif 958 959 if (is_daemon) 960 { 961 // inform our parent that we are up and running. 962 #ifdef HAVE_WIN32_PROC 963 DWORD count; 964 WriteFile( GetStdHandle( STD_OUTPUT_HANDLE ), "OK\n", 3, &count, NULL ); 965 #elif defined(HAVE_FORKEXEC) 966 fprintf(stderr, "OK\n"); 967 #endif 968 start_logging(); 969 } 970 971 fdevent_loop(); 972 973 usb_cleanup(); 974 975 return 0; 976 } 977 978 #if ADB_HOST 979 void connect_device(char* host, char* buffer, int buffer_size) 980 { 981 int port, fd; 982 char* portstr = strchr(host, ':'); 983 char hostbuf[100]; 984 char serial[100]; 985 986 strncpy(hostbuf, host, sizeof(hostbuf) - 1); 987 if (portstr) { 988 if (portstr - host >= sizeof(hostbuf)) { 989 snprintf(buffer, buffer_size, "bad host name %s", host); 990 return; 991 } 992 // zero terminate the host at the point we found the colon 993 hostbuf[portstr - host] = 0; 994 if (sscanf(portstr + 1, "%d", &port) == 0) { 995 snprintf(buffer, buffer_size, "bad port number %s", portstr); 996 return; 997 } 998 } else { 999 port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT; 1000 } 1001 1002 snprintf(serial, sizeof(serial), "%s:%d", hostbuf, port); 1003 if (find_transport(serial)) { 1004 snprintf(buffer, buffer_size, "already connected to %s", serial); 1005 return; 1006 } 1007 1008 fd = socket_network_client(hostbuf, port, SOCK_STREAM); 1009 if (fd < 0) { 1010 snprintf(buffer, buffer_size, "unable to connect to %s:%d", host, port); 1011 return; 1012 } 1013 1014 D("client: connected on remote on fd %d\n", fd); 1015 close_on_exec(fd); 1016 disable_tcp_nagle(fd); 1017 register_socket_transport(fd, serial, port, 0); 1018 snprintf(buffer, buffer_size, "connected to %s", serial); 1019 } 1020 1021 void connect_emulator(char* port_spec, char* buffer, int buffer_size) 1022 { 1023 char* port_separator = strchr(port_spec, ','); 1024 if (!port_separator) { 1025 snprintf(buffer, buffer_size, 1026 "unable to parse '%s' as <console port>,<adb port>", 1027 port_spec); 1028 return; 1029 } 1030 1031 // Zero-terminate console port and make port_separator point to 2nd port. 1032 *port_separator++ = 0; 1033 int console_port = strtol(port_spec, NULL, 0); 1034 int adb_port = strtol(port_separator, NULL, 0); 1035 if (!(console_port > 0 && adb_port > 0)) { 1036 *(port_separator - 1) = ','; 1037 snprintf(buffer, buffer_size, 1038 "Invalid port numbers: Expected positive numbers, got '%s'", 1039 port_spec); 1040 return; 1041 } 1042 1043 /* Check if the emulator is already known. 1044 * Note: There's a small but harmless race condition here: An emulator not 1045 * present just yet could be registered by another invocation right 1046 * after doing this check here. However, local_connect protects 1047 * against double-registration too. From here, a better error message 1048 * can be produced. In the case of the race condition, the very specific 1049 * error message won't be shown, but the data doesn't get corrupted. */ 1050 atransport* known_emulator = find_emulator_transport_by_adb_port(adb_port); 1051 if (known_emulator != NULL) { 1052 snprintf(buffer, buffer_size, 1053 "Emulator on port %d already registered.", adb_port); 1054 return; 1055 } 1056 1057 /* Check if more emulators can be registered. Similar unproblematic 1058 * race condition as above. */ 1059 int candidate_slot = get_available_local_transport_index(); 1060 if (candidate_slot < 0) { 1061 snprintf(buffer, buffer_size, "Cannot accept more emulators."); 1062 return; 1063 } 1064 1065 /* Preconditions met, try to connect to the emulator. */ 1066 if (!local_connect_arbitrary_ports(console_port, adb_port)) { 1067 snprintf(buffer, buffer_size, 1068 "Connected to emulator on ports %d,%d", console_port, adb_port); 1069 } else { 1070 snprintf(buffer, buffer_size, 1071 "Could not connect to emulator on ports %d,%d", 1072 console_port, adb_port); 1073 } 1074 } 1075 #endif 1076 1077 int handle_host_request(char *service, transport_type ttype, char* serial, int reply_fd, asocket *s) 1078 { 1079 atransport *transport = NULL; 1080 char buf[4096]; 1081 1082 if(!strcmp(service, "kill")) { 1083 fprintf(stderr,"adb server killed by remote request\n"); 1084 fflush(stdout); 1085 adb_write(reply_fd, "OKAY", 4); 1086 usb_cleanup(); 1087 exit(0); 1088 } 1089 1090 #if ADB_HOST 1091 // "transport:" is used for switching transport with a specified serial number 1092 // "transport-usb:" is used for switching transport to the only USB transport 1093 // "transport-local:" is used for switching transport to the only local transport 1094 // "transport-any:" is used for switching transport to the only transport 1095 if (!strncmp(service, "transport", strlen("transport"))) { 1096 char* error_string = "unknown failure"; 1097 transport_type type = kTransportAny; 1098 1099 if (!strncmp(service, "transport-usb", strlen("transport-usb"))) { 1100 type = kTransportUsb; 1101 } else if (!strncmp(service, "transport-local", strlen("transport-local"))) { 1102 type = kTransportLocal; 1103 } else if (!strncmp(service, "transport-any", strlen("transport-any"))) { 1104 type = kTransportAny; 1105 } else if (!strncmp(service, "transport:", strlen("transport:"))) { 1106 service += strlen("transport:"); 1107 serial = strdup(service); 1108 } 1109 1110 transport = acquire_one_transport(CS_ANY, type, serial, &error_string); 1111 1112 if (transport) { 1113 s->transport = transport; 1114 adb_write(reply_fd, "OKAY", 4); 1115 } else { 1116 sendfailmsg(reply_fd, error_string); 1117 } 1118 return 1; 1119 } 1120 1121 // return a list of all connected devices 1122 if (!strcmp(service, "devices")) { 1123 char buffer[4096]; 1124 memset(buf, 0, sizeof(buf)); 1125 memset(buffer, 0, sizeof(buffer)); 1126 D("Getting device list \n"); 1127 list_transports(buffer, sizeof(buffer)); 1128 snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer),buffer); 1129 D("Wrote device list \n"); 1130 writex(reply_fd, buf, strlen(buf)); 1131 return 0; 1132 } 1133 1134 // add a new TCP transport, device or emulator 1135 if (!strncmp(service, "connect:", 8)) { 1136 char buffer[4096]; 1137 char* host = service + 8; 1138 if (!strncmp(host, "emu:", 4)) { 1139 connect_emulator(host + 4, buffer, sizeof(buffer)); 1140 } else { 1141 connect_device(host, buffer, sizeof(buffer)); 1142 } 1143 // Send response for emulator and device 1144 snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer), buffer); 1145 writex(reply_fd, buf, strlen(buf)); 1146 return 0; 1147 } 1148 1149 // remove TCP transport 1150 if (!strncmp(service, "disconnect:", 11)) { 1151 char buffer[4096]; 1152 memset(buffer, 0, sizeof(buffer)); 1153 char* serial = service + 11; 1154 if (serial[0] == 0) { 1155 // disconnect from all TCP devices 1156 unregister_all_tcp_transports(); 1157 } else { 1158 char hostbuf[100]; 1159 // assume port 5555 if no port is specified 1160 if (!strchr(serial, ':')) { 1161 snprintf(hostbuf, sizeof(hostbuf) - 1, "%s:5555", serial); 1162 serial = hostbuf; 1163 } 1164 atransport *t = find_transport(serial); 1165 1166 if (t) { 1167 unregister_transport(t); 1168 } else { 1169 snprintf(buffer, sizeof(buffer), "No such device %s", serial); 1170 } 1171 } 1172 1173 snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer), buffer); 1174 writex(reply_fd, buf, strlen(buf)); 1175 return 0; 1176 } 1177 1178 // returns our value for ADB_SERVER_VERSION 1179 if (!strcmp(service, "version")) { 1180 char version[12]; 1181 snprintf(version, sizeof version, "%04x", ADB_SERVER_VERSION); 1182 snprintf(buf, sizeof buf, "OKAY%04x%s", (unsigned)strlen(version), version); 1183 writex(reply_fd, buf, strlen(buf)); 1184 return 0; 1185 } 1186 1187 if(!strncmp(service,"get-serialno",strlen("get-serialno"))) { 1188 char *out = "unknown"; 1189 transport = acquire_one_transport(CS_ANY, ttype, serial, NULL); 1190 if (transport && transport->serial) { 1191 out = transport->serial; 1192 } 1193 snprintf(buf, sizeof buf, "OKAY%04x%s",(unsigned)strlen(out),out); 1194 writex(reply_fd, buf, strlen(buf)); 1195 return 0; 1196 } 1197 // indicates a new emulator instance has started 1198 if (!strncmp(service,"emulator:",9)) { 1199 int port = atoi(service+9); 1200 local_connect(port); 1201 /* we don't even need to send a reply */ 1202 return 0; 1203 } 1204 #endif // ADB_HOST 1205 1206 if(!strncmp(service,"forward:",8) || !strncmp(service,"killforward:",12)) { 1207 char *local, *remote, *err; 1208 int r; 1209 atransport *transport; 1210 1211 int createForward = strncmp(service,"kill",4); 1212 1213 local = service + (createForward ? 8 : 12); 1214 remote = strchr(local,';'); 1215 if(remote == 0) { 1216 sendfailmsg(reply_fd, "malformed forward spec"); 1217 return 0; 1218 } 1219 1220 *remote++ = 0; 1221 if((local[0] == 0) || (remote[0] == 0) || (remote[0] == '*')){ 1222 sendfailmsg(reply_fd, "malformed forward spec"); 1223 return 0; 1224 } 1225 1226 transport = acquire_one_transport(CS_ANY, ttype, serial, &err); 1227 if (!transport) { 1228 sendfailmsg(reply_fd, err); 1229 return 0; 1230 } 1231 1232 if (createForward) { 1233 r = install_listener(local, remote, transport); 1234 } else { 1235 r = remove_listener(local, remote, transport); 1236 } 1237 if(r == 0) { 1238 /* 1st OKAY is connect, 2nd OKAY is status */ 1239 writex(reply_fd, "OKAYOKAY", 8); 1240 return 0; 1241 } 1242 1243 if (createForward) { 1244 sendfailmsg(reply_fd, (r == -1) ? "cannot rebind smartsocket" : "cannot bind socket"); 1245 } else { 1246 sendfailmsg(reply_fd, "cannot remove listener"); 1247 } 1248 return 0; 1249 } 1250 1251 if(!strncmp(service,"get-state",strlen("get-state"))) { 1252 transport = acquire_one_transport(CS_ANY, ttype, serial, NULL); 1253 char *state = connection_state_name(transport); 1254 snprintf(buf, sizeof buf, "OKAY%04x%s",(unsigned)strlen(state),state); 1255 writex(reply_fd, buf, strlen(buf)); 1256 return 0; 1257 } 1258 return -1; 1259 } 1260 1261 #if !ADB_HOST 1262 int recovery_mode = 0; 1263 #endif 1264 1265 int main(int argc, char **argv) 1266 { 1267 adb_trace_init(); 1268 #if ADB_HOST 1269 adb_sysdeps_init(); 1270 return adb_commandline(argc - 1, argv + 1); 1271 #else 1272 if((argc > 1) && (!strcmp(argv[1],"recovery"))) { 1273 adb_device_banner = "recovery"; 1274 recovery_mode = 1; 1275 } 1276 1277 start_device_log(); 1278 return adb_main(0, DEFAULT_ADB_PORT); 1279 #endif 1280 } 1281
