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 #if ADB_TRACE 40 ADB_MUTEX_DEFINE( D_lock ); 41 #endif 42 43 int HOST = 0; 44 45 static const char *adb_device_banner = "device"; 46 47 void fatal(const char *fmt, ...) 48 { 49 va_list ap; 50 va_start(ap, fmt); 51 fprintf(stderr, "error: "); 52 vfprintf(stderr, fmt, ap); 53 fprintf(stderr, "\n"); 54 va_end(ap); 55 exit(-1); 56 } 57 58 void fatal_errno(const char *fmt, ...) 59 { 60 va_list ap; 61 va_start(ap, fmt); 62 fprintf(stderr, "error: %s: ", strerror(errno)); 63 vfprintf(stderr, fmt, ap); 64 fprintf(stderr, "\n"); 65 va_end(ap); 66 exit(-1); 67 } 68 69 int adb_trace_mask; 70 71 /* read a comma/space/colum/semi-column separated list of tags 72 * from the ADB_TRACE environment variable and build the trace 73 * mask from it. note that '1' and 'all' are special cases to 74 * enable all tracing 75 */ 76 void adb_trace_init(void) 77 { 78 const char* p = getenv("ADB_TRACE"); 79 const char* q; 80 81 static const struct { 82 const char* tag; 83 int flag; 84 } tags[] = { 85 { "1", 0 }, 86 { "all", 0 }, 87 { "adb", TRACE_ADB }, 88 { "sockets", TRACE_SOCKETS }, 89 { "packets", TRACE_PACKETS }, 90 { "rwx", TRACE_RWX }, 91 { "usb", TRACE_USB }, 92 { "sync", TRACE_SYNC }, 93 { "sysdeps", TRACE_SYSDEPS }, 94 { "transport", TRACE_TRANSPORT }, 95 { "jdwp", TRACE_JDWP }, 96 { "services", TRACE_SERVICES }, 97 { NULL, 0 } 98 }; 99 100 if (p == NULL) 101 return; 102 103 /* use a comma/column/semi-colum/space separated list */ 104 while (*p) { 105 int len, tagn; 106 107 q = strpbrk(p, " ,:;"); 108 if (q == NULL) { 109 q = p + strlen(p); 110 } 111 len = q - p; 112 113 for (tagn = 0; tags[tagn].tag != NULL; tagn++) 114 { 115 int taglen = strlen(tags[tagn].tag); 116 117 if (len == taglen && !memcmp(tags[tagn].tag, p, len) ) 118 { 119 int flag = tags[tagn].flag; 120 if (flag == 0) { 121 adb_trace_mask = ~0; 122 return; 123 } 124 adb_trace_mask |= (1 << flag); 125 break; 126 } 127 } 128 p = q; 129 if (*p) 130 p++; 131 } 132 } 133 134 #if !ADB_HOST 135 /* 136 * Implements ADB tracing inside the emulator. 137 */ 138 139 #include <stdarg.h> 140 141 /* 142 * Redefine open and write for qemu_pipe.h that contains inlined references 143 * to those routines. We will redifine them back after qemu_pipe.h inclusion. 144 */ 145 146 #undef open 147 #undef write 148 #define open adb_open 149 #define write adb_write 150 #include <hardware/qemu_pipe.h> 151 #undef open 152 #undef write 153 #define open ___xxx_open 154 #define write ___xxx_write 155 156 /* A handle to adb-debug qemud service in the emulator. */ 157 int adb_debug_qemu = -1; 158 159 /* Initializes connection with the adb-debug qemud service in the emulator. */ 160 static int adb_qemu_trace_init(void) 161 { 162 char con_name[32]; 163 164 if (adb_debug_qemu >= 0) { 165 return 0; 166 } 167 168 /* adb debugging QEMUD service connection request. */ 169 snprintf(con_name, sizeof(con_name), "qemud:adb-debug"); 170 adb_debug_qemu = qemu_pipe_open(con_name); 171 return (adb_debug_qemu >= 0) ? 0 : -1; 172 } 173 174 void adb_qemu_trace(const char* fmt, ...) 175 { 176 va_list args; 177 va_start(args, fmt); 178 char msg[1024]; 179 180 if (adb_debug_qemu >= 0) { 181 vsnprintf(msg, sizeof(msg), fmt, args); 182 adb_write(adb_debug_qemu, msg, strlen(msg)); 183 } 184 } 185 #endif /* !ADB_HOST */ 186 187 apacket *get_apacket(void) 188 { 189 apacket *p = malloc(sizeof(apacket)); 190 if(p == 0) fatal("failed to allocate an apacket"); 191 memset(p, 0, sizeof(apacket) - MAX_PAYLOAD); 192 return p; 193 } 194 195 void put_apacket(apacket *p) 196 { 197 free(p); 198 } 199 200 void handle_online(void) 201 { 202 D("adb: online\n"); 203 } 204 205 void handle_offline(atransport *t) 206 { 207 D("adb: offline\n"); 208 //Close the associated usb 209 run_transport_disconnects(t); 210 } 211 212 #if TRACE_PACKETS 213 #define DUMPMAX 32 214 void print_packet(const char *label, apacket *p) 215 { 216 char *tag; 217 char *x; 218 unsigned count; 219 220 switch(p->msg.command){ 221 case A_SYNC: tag = "SYNC"; break; 222 case A_CNXN: tag = "CNXN" ; break; 223 case A_OPEN: tag = "OPEN"; break; 224 case A_OKAY: tag = "OKAY"; break; 225 case A_CLSE: tag = "CLSE"; break; 226 case A_WRTE: tag = "WRTE"; break; 227 default: tag = "????"; break; 228 } 229 230 fprintf(stderr, "%s: %s %08x %08x %04x \"", 231 label, tag, p->msg.arg0, p->msg.arg1, p->msg.data_length); 232 count = p->msg.data_length; 233 x = (char*) p->data; 234 if(count > DUMPMAX) { 235 count = DUMPMAX; 236 tag = "\n"; 237 } else { 238 tag = "\"\n"; 239 } 240 while(count-- > 0){ 241 if((*x >= ' ') && (*x < 127)) { 242 fputc(*x, stderr); 243 } else { 244 fputc('.', stderr); 245 } 246 x++; 247 } 248 fprintf(stderr, tag); 249 } 250 #endif 251 252 static void send_ready(unsigned local, unsigned remote, atransport *t) 253 { 254 D("Calling send_ready \n"); 255 apacket *p = get_apacket(); 256 p->msg.command = A_OKAY; 257 p->msg.arg0 = local; 258 p->msg.arg1 = remote; 259 send_packet(p, t); 260 } 261 262 static void send_close(unsigned local, unsigned remote, atransport *t) 263 { 264 D("Calling send_close \n"); 265 apacket *p = get_apacket(); 266 p->msg.command = A_CLSE; 267 p->msg.arg0 = local; 268 p->msg.arg1 = remote; 269 send_packet(p, t); 270 } 271 272 static void send_connect(atransport *t) 273 { 274 D("Calling send_connect \n"); 275 apacket *cp = get_apacket(); 276 cp->msg.command = A_CNXN; 277 cp->msg.arg0 = A_VERSION; 278 cp->msg.arg1 = MAX_PAYLOAD; 279 snprintf((char*) cp->data, sizeof cp->data, "%s::", 280 HOST ? "host" : adb_device_banner); 281 cp->msg.data_length = strlen((char*) cp->data) + 1; 282 send_packet(cp, t); 283 #if ADB_HOST 284 /* XXX why sleep here? */ 285 // allow the device some time to respond to the connect message 286 adb_sleep_ms(1000); 287 #endif 288 } 289 290 static char *connection_state_name(atransport *t) 291 { 292 if (t == NULL) { 293 return "unknown"; 294 } 295 296 switch(t->connection_state) { 297 case CS_BOOTLOADER: 298 return "bootloader"; 299 case CS_DEVICE: 300 return "device"; 301 case CS_OFFLINE: 302 return "offline"; 303 default: 304 return "unknown"; 305 } 306 } 307 308 void parse_banner(char *banner, atransport *t) 309 { 310 char *type, *product, *end; 311 312 D("parse_banner: %s\n", banner); 313 type = banner; 314 product = strchr(type, ':'); 315 if(product) { 316 *product++ = 0; 317 } else { 318 product = ""; 319 } 320 321 /* remove trailing ':' */ 322 end = strchr(product, ':'); 323 if(end) *end = 0; 324 325 /* save product name in device structure */ 326 if (t->product == NULL) { 327 t->product = strdup(product); 328 } else if (strcmp(product, t->product) != 0) { 329 free(t->product); 330 t->product = strdup(product); 331 } 332 333 if(!strcmp(type, "bootloader")){ 334 D("setting connection_state to CS_BOOTLOADER\n"); 335 t->connection_state = CS_BOOTLOADER; 336 update_transports(); 337 return; 338 } 339 340 if(!strcmp(type, "device")) { 341 D("setting connection_state to CS_DEVICE\n"); 342 t->connection_state = CS_DEVICE; 343 update_transports(); 344 return; 345 } 346 347 if(!strcmp(type, "recovery")) { 348 D("setting connection_state to CS_RECOVERY\n"); 349 t->connection_state = CS_RECOVERY; 350 update_transports(); 351 return; 352 } 353 354 if(!strcmp(type, "sideload")) { 355 D("setting connection_state to CS_SIDELOAD\n"); 356 t->connection_state = CS_SIDELOAD; 357 update_transports(); 358 return; 359 } 360 361 t->connection_state = CS_HOST; 362 } 363 364 void handle_packet(apacket *p, atransport *t) 365 { 366 asocket *s; 367 368 D("handle_packet() %c%c%c%c\n", ((char*) (&(p->msg.command)))[0], 369 ((char*) (&(p->msg.command)))[1], 370 ((char*) (&(p->msg.command)))[2], 371 ((char*) (&(p->msg.command)))[3]); 372 print_packet("recv", p); 373 374 switch(p->msg.command){ 375 case A_SYNC: 376 if(p->msg.arg0){ 377 send_packet(p, t); 378 if(HOST) send_connect(t); 379 } else { 380 t->connection_state = CS_OFFLINE; 381 handle_offline(t); 382 send_packet(p, t); 383 } 384 return; 385 386 case A_CNXN: /* CONNECT(version, maxdata, "system-id-string") */ 387 /* XXX verify version, etc */ 388 if(t->connection_state != CS_OFFLINE) { 389 t->connection_state = CS_OFFLINE; 390 handle_offline(t); 391 } 392 parse_banner((char*) p->data, t); 393 handle_online(); 394 if(!HOST) send_connect(t); 395 break; 396 397 case A_OPEN: /* OPEN(local-id, 0, "destination") */ 398 if(t->connection_state != CS_OFFLINE) { 399 char *name = (char*) p->data; 400 name[p->msg.data_length > 0 ? p->msg.data_length - 1 : 0] = 0; 401 s = create_local_service_socket(name); 402 if(s == 0) { 403 send_close(0, p->msg.arg0, t); 404 } else { 405 s->peer = create_remote_socket(p->msg.arg0, t); 406 s->peer->peer = s; 407 send_ready(s->id, s->peer->id, t); 408 s->ready(s); 409 } 410 } 411 break; 412 413 case A_OKAY: /* READY(local-id, remote-id, "") */ 414 if(t->connection_state != CS_OFFLINE) { 415 if((s = find_local_socket(p->msg.arg1))) { 416 if(s->peer == 0) { 417 s->peer = create_remote_socket(p->msg.arg0, t); 418 s->peer->peer = s; 419 } 420 s->ready(s); 421 } 422 } 423 break; 424 425 case A_CLSE: /* CLOSE(local-id, remote-id, "") */ 426 if(t->connection_state != CS_OFFLINE) { 427 if((s = find_local_socket(p->msg.arg1))) { 428 s->close(s); 429 } 430 } 431 break; 432 433 case A_WRTE: 434 if(t->connection_state != CS_OFFLINE) { 435 if((s = find_local_socket(p->msg.arg1))) { 436 unsigned rid = p->msg.arg0; 437 p->len = p->msg.data_length; 438 439 if(s->enqueue(s, p) == 0) { 440 D("Enqueue the socket\n"); 441 send_ready(s->id, rid, t); 442 } 443 return; 444 } 445 } 446 break; 447 448 default: 449 printf("handle_packet: what is %08x?!\n", p->msg.command); 450 } 451 452 put_apacket(p); 453 } 454 455 alistener listener_list = { 456 .next = &listener_list, 457 .prev = &listener_list, 458 }; 459 460 static void ss_listener_event_func(int _fd, unsigned ev, void *_l) 461 { 462 asocket *s; 463 464 if(ev & FDE_READ) { 465 struct sockaddr addr; 466 socklen_t alen; 467 int fd; 468 469 alen = sizeof(addr); 470 fd = adb_socket_accept(_fd, &addr, &alen); 471 if(fd < 0) return; 472 473 adb_socket_setbufsize(fd, CHUNK_SIZE); 474 475 s = create_local_socket(fd); 476 if(s) { 477 connect_to_smartsocket(s); 478 return; 479 } 480 481 adb_close(fd); 482 } 483 } 484 485 static void listener_event_func(int _fd, unsigned ev, void *_l) 486 { 487 alistener *l = _l; 488 asocket *s; 489 490 if(ev & FDE_READ) { 491 struct sockaddr addr; 492 socklen_t alen; 493 int fd; 494 495 alen = sizeof(addr); 496 fd = adb_socket_accept(_fd, &addr, &alen); 497 if(fd < 0) return; 498 499 s = create_local_socket(fd); 500 if(s) { 501 s->transport = l->transport; 502 connect_to_remote(s, l->connect_to); 503 return; 504 } 505 506 adb_close(fd); 507 } 508 } 509 510 static void free_listener(alistener* l) 511 { 512 if (l->next) { 513 l->next->prev = l->prev; 514 l->prev->next = l->next; 515 l->next = l->prev = l; 516 } 517 518 // closes the corresponding fd 519 fdevent_remove(&l->fde); 520 521 if (l->local_name) 522 free((char*)l->local_name); 523 524 if (l->connect_to) 525 free((char*)l->connect_to); 526 527 if (l->transport) { 528 remove_transport_disconnect(l->transport, &l->disconnect); 529 } 530 free(l); 531 } 532 533 static void listener_disconnect(void* _l, atransport* t) 534 { 535 alistener* l = _l; 536 537 free_listener(l); 538 } 539 540 int local_name_to_fd(const char *name) 541 { 542 int port; 543 544 if(!strncmp("tcp:", name, 4)){ 545 int ret; 546 port = atoi(name + 4); 547 ret = socket_loopback_server(port, SOCK_STREAM); 548 return ret; 549 } 550 #ifndef HAVE_WIN32_IPC /* no Unix-domain sockets on Win32 */ 551 // It's non-sensical to support the "reserved" space on the adb host side 552 if(!strncmp(name, "local:", 6)) { 553 return socket_local_server(name + 6, 554 ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); 555 } else if(!strncmp(name, "localabstract:", 14)) { 556 return socket_local_server(name + 14, 557 ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); 558 } else if(!strncmp(name, "localfilesystem:", 16)) { 559 return socket_local_server(name + 16, 560 ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM); 561 } 562 563 #endif 564 printf("unknown local portname '%s'\n", name); 565 return -1; 566 } 567 568 static int remove_listener(const char *local_name, const char *connect_to, atransport* transport) 569 { 570 alistener *l; 571 572 for (l = listener_list.next; l != &listener_list; l = l->next) { 573 if (!strcmp(local_name, l->local_name) && 574 !strcmp(connect_to, l->connect_to) && 575 l->transport && l->transport == transport) { 576 577 listener_disconnect(l, transport); 578 return 0; 579 } 580 } 581 582 return -1; 583 } 584 585 static int install_listener(const char *local_name, const char *connect_to, atransport* transport) 586 { 587 alistener *l; 588 589 //printf("install_listener('%s','%s')\n", local_name, connect_to); 590 591 for(l = listener_list.next; l != &listener_list; l = l->next){ 592 if(strcmp(local_name, l->local_name) == 0) { 593 char *cto; 594 595 /* can't repurpose a smartsocket */ 596 if(l->connect_to[0] == '*') { 597 return -1; 598 } 599 600 cto = strdup(connect_to); 601 if(cto == 0) { 602 return -1; 603 } 604 605 //printf("rebinding '%s' to '%s'\n", local_name, connect_to); 606 free((void*) l->connect_to); 607 l->connect_to = cto; 608 if (l->transport != transport) { 609 remove_transport_disconnect(l->transport, &l->disconnect); 610 l->transport = transport; 611 add_transport_disconnect(l->transport, &l->disconnect); 612 } 613 return 0; 614 } 615 } 616 617 if((l = calloc(1, sizeof(alistener))) == 0) goto nomem; 618 if((l->local_name = strdup(local_name)) == 0) goto nomem; 619 if((l->connect_to = strdup(connect_to)) == 0) goto nomem; 620 621 622 l->fd = local_name_to_fd(local_name); 623 if(l->fd < 0) { 624 free((void*) l->local_name); 625 free((void*) l->connect_to); 626 free(l); 627 printf("cannot bind '%s'\n", local_name); 628 return -2; 629 } 630 631 close_on_exec(l->fd); 632 if(!strcmp(l->connect_to, "*smartsocket*")) { 633 fdevent_install(&l->fde, l->fd, ss_listener_event_func, l); 634 } else { 635 fdevent_install(&l->fde, l->fd, listener_event_func, l); 636 } 637 fdevent_set(&l->fde, FDE_READ); 638 639 l->next = &listener_list; 640 l->prev = listener_list.prev; 641 l->next->prev = l; 642 l->prev->next = l; 643 l->transport = transport; 644 645 if (transport) { 646 l->disconnect.opaque = l; 647 l->disconnect.func = listener_disconnect; 648 add_transport_disconnect(transport, &l->disconnect); 649 } 650 return 0; 651 652 nomem: 653 fatal("cannot allocate listener"); 654 return 0; 655 } 656 657 #ifdef HAVE_WIN32_PROC 658 static BOOL WINAPI ctrlc_handler(DWORD type) 659 { 660 exit(STATUS_CONTROL_C_EXIT); 661 return TRUE; 662 } 663 #endif 664 665 static void adb_cleanup(void) 666 { 667 usb_cleanup(); 668 } 669 670 void start_logging(void) 671 { 672 #ifdef HAVE_WIN32_PROC 673 char temp[ MAX_PATH ]; 674 FILE* fnul; 675 FILE* flog; 676 677 GetTempPath( sizeof(temp) - 8, temp ); 678 strcat( temp, "adb.log" ); 679 680 /* Win32 specific redirections */ 681 fnul = fopen( "NUL", "rt" ); 682 if (fnul != NULL) 683 stdin[0] = fnul[0]; 684 685 flog = fopen( temp, "at" ); 686 if (flog == NULL) 687 flog = fnul; 688 689 setvbuf( flog, NULL, _IONBF, 0 ); 690 691 stdout[0] = flog[0]; 692 stderr[0] = flog[0]; 693 fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid()); 694 #else 695 int fd; 696 697 fd = unix_open("/dev/null", O_RDONLY); 698 dup2(fd, 0); 699 adb_close(fd); 700 701 fd = unix_open("/tmp/adb.log", O_WRONLY | O_CREAT | O_APPEND, 0640); 702 if(fd < 0) { 703 fd = unix_open("/dev/null", O_WRONLY); 704 } 705 dup2(fd, 1); 706 dup2(fd, 2); 707 adb_close(fd); 708 fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid()); 709 #endif 710 } 711 712 #if !ADB_HOST 713 void start_device_log(void) 714 { 715 int fd; 716 char path[PATH_MAX]; 717 struct tm now; 718 time_t t; 719 char value[PROPERTY_VALUE_MAX]; 720 721 // read the trace mask from persistent property persist.adb.trace_mask 722 // give up if the property is not set or cannot be parsed 723 property_get("persist.adb.trace_mask", value, ""); 724 if (sscanf(value, "%x", &adb_trace_mask) != 1) 725 return; 726 727 adb_mkdir("/data/adb", 0775); 728 tzset(); 729 time(&t); 730 localtime_r(&t, &now); 731 strftime(path, sizeof(path), 732 "/data/adb/adb-%Y-%m-%d-%H-%M-%S.txt", 733 &now); 734 fd = unix_open(path, O_WRONLY | O_CREAT | O_TRUNC, 0640); 735 if (fd < 0) 736 return; 737 738 // redirect stdout and stderr to the log file 739 dup2(fd, 1); 740 dup2(fd, 2); 741 fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid()); 742 adb_close(fd); 743 744 fd = unix_open("/dev/null", O_RDONLY); 745 dup2(fd, 0); 746 adb_close(fd); 747 } 748 #endif 749 750 #if ADB_HOST 751 int launch_server(int server_port) 752 { 753 #ifdef HAVE_WIN32_PROC 754 /* we need to start the server in the background */ 755 /* we create a PIPE that will be used to wait for the server's "OK" */ 756 /* message since the pipe handles must be inheritable, we use a */ 757 /* security attribute */ 758 HANDLE pipe_read, pipe_write; 759 SECURITY_ATTRIBUTES sa; 760 STARTUPINFO startup; 761 PROCESS_INFORMATION pinfo; 762 char program_path[ MAX_PATH ]; 763 int ret; 764 765 sa.nLength = sizeof(sa); 766 sa.lpSecurityDescriptor = NULL; 767 sa.bInheritHandle = TRUE; 768 769 /* create pipe, and ensure its read handle isn't inheritable */ 770 ret = CreatePipe( &pipe_read, &pipe_write, &sa, 0 ); 771 if (!ret) { 772 fprintf(stderr, "CreatePipe() failure, error %ld\n", GetLastError() ); 773 return -1; 774 } 775 776 SetHandleInformation( pipe_read, HANDLE_FLAG_INHERIT, 0 ); 777 778 ZeroMemory( &startup, sizeof(startup) ); 779 startup.cb = sizeof(startup); 780 startup.hStdInput = GetStdHandle( STD_INPUT_HANDLE ); 781 startup.hStdOutput = pipe_write; 782 startup.hStdError = GetStdHandle( STD_ERROR_HANDLE ); 783 startup.dwFlags = STARTF_USESTDHANDLES; 784 785 ZeroMemory( &pinfo, sizeof(pinfo) ); 786 787 /* get path of current program */ 788 GetModuleFileName( NULL, program_path, sizeof(program_path) ); 789 790 ret = CreateProcess( 791 program_path, /* program path */ 792 "adb fork-server server", 793 /* the fork-server argument will set the 794 debug = 2 in the child */ 795 NULL, /* process handle is not inheritable */ 796 NULL, /* thread handle is not inheritable */ 797 TRUE, /* yes, inherit some handles */ 798 DETACHED_PROCESS, /* the new process doesn't have a console */ 799 NULL, /* use parent's environment block */ 800 NULL, /* use parent's starting directory */ 801 &startup, /* startup info, i.e. std handles */ 802 &pinfo ); 803 804 CloseHandle( pipe_write ); 805 806 if (!ret) { 807 fprintf(stderr, "CreateProcess failure, error %ld\n", GetLastError() ); 808 CloseHandle( pipe_read ); 809 return -1; 810 } 811 812 CloseHandle( pinfo.hProcess ); 813 CloseHandle( pinfo.hThread ); 814 815 /* wait for the "OK\n" message */ 816 { 817 char temp[3]; 818 DWORD count; 819 820 ret = ReadFile( pipe_read, temp, 3, &count, NULL ); 821 CloseHandle( pipe_read ); 822 if ( !ret ) { 823 fprintf(stderr, "could not read ok from ADB Server, error = %ld\n", GetLastError() ); 824 return -1; 825 } 826 if (count != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') { 827 fprintf(stderr, "ADB server didn't ACK\n" ); 828 return -1; 829 } 830 } 831 #elif defined(HAVE_FORKEXEC) 832 char path[PATH_MAX]; 833 int fd[2]; 834 835 // set up a pipe so the child can tell us when it is ready. 836 // fd[0] will be parent's end, and fd[1] will get mapped to stderr in the child. 837 if (pipe(fd)) { 838 fprintf(stderr, "pipe failed in launch_server, errno: %d\n", errno); 839 return -1; 840 } 841 get_my_path(path, PATH_MAX); 842 pid_t pid = fork(); 843 if(pid < 0) return -1; 844 845 if (pid == 0) { 846 // child side of the fork 847 848 // redirect stderr to the pipe 849 // we use stderr instead of stdout due to stdout's buffering behavior. 850 adb_close(fd[0]); 851 dup2(fd[1], STDERR_FILENO); 852 adb_close(fd[1]); 853 854 // child process 855 int result = execl(path, "adb", "fork-server", "server", NULL); 856 // this should not return 857 fprintf(stderr, "OOPS! execl returned %d, errno: %d\n", result, errno); 858 } else { 859 // parent side of the fork 860 861 char temp[3]; 862 863 temp[0] = 'A'; temp[1] = 'B'; temp[2] = 'C'; 864 // wait for the "OK\n" message 865 adb_close(fd[1]); 866 int ret = adb_read(fd[0], temp, 3); 867 int saved_errno = errno; 868 adb_close(fd[0]); 869 if (ret < 0) { 870 fprintf(stderr, "could not read ok from ADB Server, errno = %d\n", saved_errno); 871 return -1; 872 } 873 if (ret != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') { 874 fprintf(stderr, "ADB server didn't ACK\n" ); 875 return -1; 876 } 877 878 setsid(); 879 } 880 #else 881 #error "cannot implement background server start on this platform" 882 #endif 883 return 0; 884 } 885 #endif 886 887 /* Constructs a local name of form tcp:port. 888 * target_str points to the target string, it's content will be overwritten. 889 * target_size is the capacity of the target string. 890 * server_port is the port number to use for the local name. 891 */ 892 void build_local_name(char* target_str, size_t target_size, int server_port) 893 { 894 snprintf(target_str, target_size, "tcp:%d", server_port); 895 } 896 897 #if !ADB_HOST 898 static int should_drop_privileges() { 899 #ifndef ALLOW_ADBD_ROOT 900 return 1; 901 #else /* ALLOW_ADBD_ROOT */ 902 int secure = 0; 903 char value[PROPERTY_VALUE_MAX]; 904 905 /* run adbd in secure mode if ro.secure is set and 906 ** we are not in the emulator 907 */ 908 property_get("ro.kernel.qemu", value, ""); 909 if (strcmp(value, "1") != 0) { 910 property_get("ro.secure", value, "1"); 911 if (strcmp(value, "1") == 0) { 912 // don't run as root if ro.secure is set... 913 secure = 1; 914 915 // ... except we allow running as root in userdebug builds if the 916 // service.adb.root property has been set by the "adb root" command 917 property_get("ro.debuggable", value, ""); 918 if (strcmp(value, "1") == 0) { 919 property_get("service.adb.root", value, ""); 920 if (strcmp(value, "1") == 0) { 921 secure = 0; 922 } 923 } 924 } 925 } 926 return secure; 927 #endif /* ALLOW_ADBD_ROOT */ 928 } 929 #endif /* !ADB_HOST */ 930 931 int adb_main(int is_daemon, int server_port) 932 { 933 #if !ADB_HOST 934 int port; 935 char value[PROPERTY_VALUE_MAX]; 936 937 umask(000); 938 #endif 939 940 atexit(adb_cleanup); 941 #ifdef HAVE_WIN32_PROC 942 SetConsoleCtrlHandler( ctrlc_handler, TRUE ); 943 #elif defined(HAVE_FORKEXEC) 944 // No SIGCHLD. Let the service subproc handle its children. 945 signal(SIGPIPE, SIG_IGN); 946 #endif 947 948 init_transport_registration(); 949 950 951 #if ADB_HOST 952 HOST = 1; 953 usb_vendors_init(); 954 usb_init(); 955 local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT); 956 957 char local_name[30]; 958 build_local_name(local_name, sizeof(local_name), server_port); 959 if(install_listener(local_name, "*smartsocket*", NULL)) { 960 exit(1); 961 } 962 #else 963 964 /* don't listen on a port (default 5037) if running in secure mode */ 965 /* don't run as root if we are running in secure mode */ 966 if (should_drop_privileges()) { 967 struct __user_cap_header_struct header; 968 struct __user_cap_data_struct cap; 969 970 if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) != 0) { 971 exit(1); 972 } 973 974 /* add extra groups: 975 ** AID_ADB to access the USB driver 976 ** AID_LOG to read system logs (adb logcat) 977 ** AID_INPUT to diagnose input issues (getevent) 978 ** AID_INET to diagnose network issues (netcfg, ping) 979 ** AID_GRAPHICS to access the frame buffer 980 ** AID_NET_BT and AID_NET_BT_ADMIN to diagnose bluetooth (hcidump) 981 ** AID_SDCARD_R to allow reading from the SD card 982 ** AID_SDCARD_RW to allow writing to the SD card 983 ** AID_MOUNT to allow unmounting the SD card before rebooting 984 ** AID_NET_BW_STATS to read out qtaguid statistics 985 */ 986 gid_t groups[] = { AID_ADB, AID_LOG, AID_INPUT, AID_INET, AID_GRAPHICS, 987 AID_NET_BT, AID_NET_BT_ADMIN, AID_SDCARD_R, AID_SDCARD_RW, 988 AID_MOUNT, AID_NET_BW_STATS }; 989 if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) { 990 exit(1); 991 } 992 993 /* then switch user and group to "shell" */ 994 if (setgid(AID_SHELL) != 0) { 995 exit(1); 996 } 997 if (setuid(AID_SHELL) != 0) { 998 exit(1); 999 } 1000 1001 /* set CAP_SYS_BOOT capability, so "adb reboot" will succeed */ 1002 header.version = _LINUX_CAPABILITY_VERSION; 1003 header.pid = 0; 1004 cap.effective = cap.permitted = (1 << CAP_SYS_BOOT); 1005 cap.inheritable = 0; 1006 capset(&header, &cap); 1007 1008 D("Local port disabled\n"); 1009 } else { 1010 char local_name[30]; 1011 build_local_name(local_name, sizeof(local_name), server_port); 1012 if(install_listener(local_name, "*smartsocket*", NULL)) { 1013 exit(1); 1014 } 1015 } 1016 1017 /* for the device, start the usb transport if the 1018 ** android usb device exists and the "service.adb.tcp.port" and 1019 ** "persist.adb.tcp.port" properties are not set. 1020 ** Otherwise start the network transport. 1021 */ 1022 property_get("service.adb.tcp.port", value, ""); 1023 if (!value[0]) 1024 property_get("persist.adb.tcp.port", value, ""); 1025 if (sscanf(value, "%d", &port) == 1 && port > 0) { 1026 // listen on TCP port specified by service.adb.tcp.port property 1027 local_init(port); 1028 } else if (access("/dev/android_adb", F_OK) == 0) { 1029 // listen on USB 1030 usb_init(); 1031 } else { 1032 // listen on default port 1033 local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT); 1034 } 1035 D("adb_main(): pre init_jdwp()\n"); 1036 init_jdwp(); 1037 D("adb_main(): post init_jdwp()\n"); 1038 #endif 1039 1040 if (is_daemon) 1041 { 1042 // inform our parent that we are up and running. 1043 #ifdef HAVE_WIN32_PROC 1044 DWORD count; 1045 WriteFile( GetStdHandle( STD_OUTPUT_HANDLE ), "OK\n", 3, &count, NULL ); 1046 #elif defined(HAVE_FORKEXEC) 1047 fprintf(stderr, "OK\n"); 1048 #endif 1049 start_logging(); 1050 } 1051 D("Event loop starting\n"); 1052 1053 fdevent_loop(); 1054 1055 usb_cleanup(); 1056 1057 return 0; 1058 } 1059 1060 #if ADB_HOST 1061 void connect_device(char* host, char* buffer, int buffer_size) 1062 { 1063 int port, fd; 1064 char* portstr = strchr(host, ':'); 1065 char hostbuf[100]; 1066 char serial[100]; 1067 1068 strncpy(hostbuf, host, sizeof(hostbuf) - 1); 1069 if (portstr) { 1070 if (portstr - host >= sizeof(hostbuf)) { 1071 snprintf(buffer, buffer_size, "bad host name %s", host); 1072 return; 1073 } 1074 // zero terminate the host at the point we found the colon 1075 hostbuf[portstr - host] = 0; 1076 if (sscanf(portstr + 1, "%d", &port) == 0) { 1077 snprintf(buffer, buffer_size, "bad port number %s", portstr); 1078 return; 1079 } 1080 } else { 1081 port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT; 1082 } 1083 1084 snprintf(serial, sizeof(serial), "%s:%d", hostbuf, port); 1085 if (find_transport(serial)) { 1086 snprintf(buffer, buffer_size, "already connected to %s", serial); 1087 return; 1088 } 1089 1090 fd = socket_network_client(hostbuf, port, SOCK_STREAM); 1091 if (fd < 0) { 1092 snprintf(buffer, buffer_size, "unable to connect to %s:%d", host, port); 1093 return; 1094 } 1095 1096 D("client: connected on remote on fd %d\n", fd); 1097 close_on_exec(fd); 1098 disable_tcp_nagle(fd); 1099 register_socket_transport(fd, serial, port, 0); 1100 snprintf(buffer, buffer_size, "connected to %s", serial); 1101 } 1102 1103 void connect_emulator(char* port_spec, char* buffer, int buffer_size) 1104 { 1105 char* port_separator = strchr(port_spec, ','); 1106 if (!port_separator) { 1107 snprintf(buffer, buffer_size, 1108 "unable to parse '%s' as <console port>,<adb port>", 1109 port_spec); 1110 return; 1111 } 1112 1113 // Zero-terminate console port and make port_separator point to 2nd port. 1114 *port_separator++ = 0; 1115 int console_port = strtol(port_spec, NULL, 0); 1116 int adb_port = strtol(port_separator, NULL, 0); 1117 if (!(console_port > 0 && adb_port > 0)) { 1118 *(port_separator - 1) = ','; 1119 snprintf(buffer, buffer_size, 1120 "Invalid port numbers: Expected positive numbers, got '%s'", 1121 port_spec); 1122 return; 1123 } 1124 1125 /* Check if the emulator is already known. 1126 * Note: There's a small but harmless race condition here: An emulator not 1127 * present just yet could be registered by another invocation right 1128 * after doing this check here. However, local_connect protects 1129 * against double-registration too. From here, a better error message 1130 * can be produced. In the case of the race condition, the very specific 1131 * error message won't be shown, but the data doesn't get corrupted. */ 1132 atransport* known_emulator = find_emulator_transport_by_adb_port(adb_port); 1133 if (known_emulator != NULL) { 1134 snprintf(buffer, buffer_size, 1135 "Emulator on port %d already registered.", adb_port); 1136 return; 1137 } 1138 1139 /* Check if more emulators can be registered. Similar unproblematic 1140 * race condition as above. */ 1141 int candidate_slot = get_available_local_transport_index(); 1142 if (candidate_slot < 0) { 1143 snprintf(buffer, buffer_size, "Cannot accept more emulators."); 1144 return; 1145 } 1146 1147 /* Preconditions met, try to connect to the emulator. */ 1148 if (!local_connect_arbitrary_ports(console_port, adb_port)) { 1149 snprintf(buffer, buffer_size, 1150 "Connected to emulator on ports %d,%d", console_port, adb_port); 1151 } else { 1152 snprintf(buffer, buffer_size, 1153 "Could not connect to emulator on ports %d,%d", 1154 console_port, adb_port); 1155 } 1156 } 1157 #endif 1158 1159 int handle_host_request(char *service, transport_type ttype, char* serial, int reply_fd, asocket *s) 1160 { 1161 atransport *transport = NULL; 1162 char buf[4096]; 1163 1164 if(!strcmp(service, "kill")) { 1165 fprintf(stderr,"adb server killed by remote request\n"); 1166 fflush(stdout); 1167 adb_write(reply_fd, "OKAY", 4); 1168 usb_cleanup(); 1169 exit(0); 1170 } 1171 1172 #if ADB_HOST 1173 // "transport:" is used for switching transport with a specified serial number 1174 // "transport-usb:" is used for switching transport to the only USB transport 1175 // "transport-local:" is used for switching transport to the only local transport 1176 // "transport-any:" is used for switching transport to the only transport 1177 if (!strncmp(service, "transport", strlen("transport"))) { 1178 char* error_string = "unknown failure"; 1179 transport_type type = kTransportAny; 1180 1181 if (!strncmp(service, "transport-usb", strlen("transport-usb"))) { 1182 type = kTransportUsb; 1183 } else if (!strncmp(service, "transport-local", strlen("transport-local"))) { 1184 type = kTransportLocal; 1185 } else if (!strncmp(service, "transport-any", strlen("transport-any"))) { 1186 type = kTransportAny; 1187 } else if (!strncmp(service, "transport:", strlen("transport:"))) { 1188 service += strlen("transport:"); 1189 serial = service; 1190 } 1191 1192 transport = acquire_one_transport(CS_ANY, type, serial, &error_string); 1193 1194 if (transport) { 1195 s->transport = transport; 1196 adb_write(reply_fd, "OKAY", 4); 1197 } else { 1198 sendfailmsg(reply_fd, error_string); 1199 } 1200 return 1; 1201 } 1202 1203 // return a list of all connected devices 1204 if (!strcmp(service, "devices")) { 1205 char buffer[4096]; 1206 memset(buf, 0, sizeof(buf)); 1207 memset(buffer, 0, sizeof(buffer)); 1208 D("Getting device list \n"); 1209 list_transports(buffer, sizeof(buffer)); 1210 snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer),buffer); 1211 D("Wrote device list \n"); 1212 writex(reply_fd, buf, strlen(buf)); 1213 return 0; 1214 } 1215 1216 // add a new TCP transport, device or emulator 1217 if (!strncmp(service, "connect:", 8)) { 1218 char buffer[4096]; 1219 char* host = service + 8; 1220 if (!strncmp(host, "emu:", 4)) { 1221 connect_emulator(host + 4, buffer, sizeof(buffer)); 1222 } else { 1223 connect_device(host, buffer, sizeof(buffer)); 1224 } 1225 // Send response for emulator and device 1226 snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer), buffer); 1227 writex(reply_fd, buf, strlen(buf)); 1228 return 0; 1229 } 1230 1231 // remove TCP transport 1232 if (!strncmp(service, "disconnect:", 11)) { 1233 char buffer[4096]; 1234 memset(buffer, 0, sizeof(buffer)); 1235 char* serial = service + 11; 1236 if (serial[0] == 0) { 1237 // disconnect from all TCP devices 1238 unregister_all_tcp_transports(); 1239 } else { 1240 char hostbuf[100]; 1241 // assume port 5555 if no port is specified 1242 if (!strchr(serial, ':')) { 1243 snprintf(hostbuf, sizeof(hostbuf) - 1, "%s:5555", serial); 1244 serial = hostbuf; 1245 } 1246 atransport *t = find_transport(serial); 1247 1248 if (t) { 1249 unregister_transport(t); 1250 } else { 1251 snprintf(buffer, sizeof(buffer), "No such device %s", serial); 1252 } 1253 } 1254 1255 snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer), buffer); 1256 writex(reply_fd, buf, strlen(buf)); 1257 return 0; 1258 } 1259 1260 // returns our value for ADB_SERVER_VERSION 1261 if (!strcmp(service, "version")) { 1262 char version[12]; 1263 snprintf(version, sizeof version, "%04x", ADB_SERVER_VERSION); 1264 snprintf(buf, sizeof buf, "OKAY%04x%s", (unsigned)strlen(version), version); 1265 writex(reply_fd, buf, strlen(buf)); 1266 return 0; 1267 } 1268 1269 if(!strncmp(service,"get-serialno",strlen("get-serialno"))) { 1270 char *out = "unknown"; 1271 transport = acquire_one_transport(CS_ANY, ttype, serial, NULL); 1272 if (transport && transport->serial) { 1273 out = transport->serial; 1274 } 1275 snprintf(buf, sizeof buf, "OKAY%04x%s",(unsigned)strlen(out),out); 1276 writex(reply_fd, buf, strlen(buf)); 1277 return 0; 1278 } 1279 // indicates a new emulator instance has started 1280 if (!strncmp(service,"emulator:",9)) { 1281 int port = atoi(service+9); 1282 local_connect(port); 1283 /* we don't even need to send a reply */ 1284 return 0; 1285 } 1286 #endif // ADB_HOST 1287 1288 if(!strncmp(service,"forward:",8) || !strncmp(service,"killforward:",12)) { 1289 char *local, *remote, *err; 1290 int r; 1291 atransport *transport; 1292 1293 int createForward = strncmp(service,"kill",4); 1294 1295 local = service + (createForward ? 8 : 12); 1296 remote = strchr(local,';'); 1297 if(remote == 0) { 1298 sendfailmsg(reply_fd, "malformed forward spec"); 1299 return 0; 1300 } 1301 1302 *remote++ = 0; 1303 if((local[0] == 0) || (remote[0] == 0) || (remote[0] == '*')){ 1304 sendfailmsg(reply_fd, "malformed forward spec"); 1305 return 0; 1306 } 1307 1308 transport = acquire_one_transport(CS_ANY, ttype, serial, &err); 1309 if (!transport) { 1310 sendfailmsg(reply_fd, err); 1311 return 0; 1312 } 1313 1314 if (createForward) { 1315 r = install_listener(local, remote, transport); 1316 } else { 1317 r = remove_listener(local, remote, transport); 1318 } 1319 if(r == 0) { 1320 /* 1st OKAY is connect, 2nd OKAY is status */ 1321 writex(reply_fd, "OKAYOKAY", 8); 1322 return 0; 1323 } 1324 1325 if (createForward) { 1326 sendfailmsg(reply_fd, (r == -1) ? "cannot rebind smartsocket" : "cannot bind socket"); 1327 } else { 1328 sendfailmsg(reply_fd, "cannot remove listener"); 1329 } 1330 return 0; 1331 } 1332 1333 if(!strncmp(service,"get-state",strlen("get-state"))) { 1334 transport = acquire_one_transport(CS_ANY, ttype, serial, NULL); 1335 char *state = connection_state_name(transport); 1336 snprintf(buf, sizeof buf, "OKAY%04x%s",(unsigned)strlen(state),state); 1337 writex(reply_fd, buf, strlen(buf)); 1338 return 0; 1339 } 1340 return -1; 1341 } 1342 1343 #if !ADB_HOST 1344 int recovery_mode = 0; 1345 #endif 1346 1347 int main(int argc, char **argv) 1348 { 1349 #if ADB_HOST 1350 adb_sysdeps_init(); 1351 adb_trace_init(); 1352 D("Handling commandline()\n"); 1353 return adb_commandline(argc - 1, argv + 1); 1354 #else 1355 /* If adbd runs inside the emulator this will enable adb tracing via 1356 * adb-debug qemud service in the emulator. */ 1357 adb_qemu_trace_init(); 1358 if((argc > 1) && (!strcmp(argv[1],"recovery"))) { 1359 adb_device_banner = "recovery"; 1360 recovery_mode = 1; 1361 } 1362 1363 start_device_log(); 1364 D("Handling main()\n"); 1365 return adb_main(0, DEFAULT_ADB_PORT); 1366 #endif 1367 } 1368
