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 <stdio.h> |
| 18 | #include <stdlib.h> |
| 19 | #include <unistd.h> |
| 20 | #include <string.h> |
| 21 | #include <errno.h> |
| 22 | |
| 23 | #include "sysdeps.h" |
| 24 | |
| 25 | #define TRACE_TAG TRACE_TRANSPORT |
| 26 | #include "adb.h" |
| 27 | |
| 28 | static void transport_unref(atransport *t); |
| 29 | |
| 30 | static atransport transport_list = { |
| 31 | .next = &transport_list, |
| 32 | .prev = &transport_list, |
| 33 | }; |
| 34 | |
| 35 | ADB_MUTEX_DEFINE( transport_lock ); |
| 36 | |
| 37 | #if ADB_TRACE |
| 38 | static void dump_hex( const unsigned char* ptr, size_t len ) |
| 39 | { |
| 40 | int nn, len2 = len; |
| 41 | |
| 42 | if (len2 > 16) len2 = 16; |
| 43 | |
| 44 | for (nn = 0; nn < len2; nn++) |
| 45 | D("%02x", ptr[nn]); |
| 46 | D(" "); |
| 47 | |
| 48 | for (nn = 0; nn < len2; nn++) { |
| 49 | int c = ptr[nn]; |
| 50 | if (c < 32 || c > 127) |
| 51 | c = '.'; |
| 52 | D("%c", c); |
| 53 | } |
| 54 | D("\n"); |
| 55 | fflush(stdout); |
| 56 | } |
| 57 | #endif |
| 58 | |
| 59 | void |
| 60 | kick_transport(atransport* t) |
| 61 | { |
| 62 | if (t && !t->kicked) |
| 63 | { |
| 64 | int kicked; |
| 65 | |
| 66 | adb_mutex_lock(&transport_lock); |
| 67 | kicked = t->kicked; |
| 68 | if (!kicked) |
| 69 | t->kicked = 1; |
| 70 | adb_mutex_unlock(&transport_lock); |
| 71 | |
| 72 | if (!kicked) |
| 73 | t->kick(t); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | void |
| 78 | run_transport_disconnects(atransport* t) |
| 79 | { |
| 80 | adisconnect* dis = t->disconnects.next; |
| 81 | |
| 82 | D("run_transport_disconnects: %p (%s)\n", t, t->serial ? t->serial : "unknown" ); |
| 83 | while (dis != &t->disconnects) { |
| 84 | adisconnect* next = dis->next; |
| 85 | dis->func( dis->opaque, t ); |
| 86 | dis = next; |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | static int |
| 91 | read_packet(int fd, apacket** ppacket) |
| 92 | { |
| 93 | char *p = (char*)ppacket; /* really read a packet address */ |
| 94 | int r; |
| 95 | int len = sizeof(*ppacket); |
| 96 | while(len > 0) { |
| 97 | r = adb_read(fd, p, len); |
| 98 | if(r > 0) { |
| 99 | len -= r; |
| 100 | p += r; |
| 101 | } else { |
| 102 | D("read_packet: %d error %d %d\n", fd, r, errno); |
| 103 | if((r < 0) && (errno == EINTR)) continue; |
| 104 | return -1; |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | #if ADB_TRACE |
| 109 | if (ADB_TRACING) |
| 110 | { |
| 111 | unsigned command = (*ppacket)->msg.command; |
| 112 | int len = (*ppacket)->msg.data_length; |
| 113 | char cmd[5]; |
| 114 | int n; |
| 115 | |
| 116 | for (n = 0; n < 4; n++) { |
| 117 | int b = (command >> (n*8)) & 255; |
| 118 | if (b >= 32 && b < 127) |
| 119 | cmd[n] = (char)b; |
| 120 | else |
| 121 | cmd[n] = '.'; |
| 122 | } |
| 123 | cmd[4] = 0; |
| 124 | |
| 125 | D("read_packet: %d ok: [%08x %s] %08x %08x (%d) ", |
| 126 | fd, command, cmd, (*ppacket)->msg.arg0, (*ppacket)->msg.arg1, len); |
| 127 | dump_hex((*ppacket)->data, len); |
| 128 | } |
| 129 | #endif |
| 130 | return 0; |
| 131 | } |
| 132 | |
| 133 | static int |
| 134 | write_packet(int fd, apacket** ppacket) |
| 135 | { |
| 136 | char *p = (char*) ppacket; /* we really write the packet address */ |
| 137 | int r, len = sizeof(ppacket); |
| 138 | |
| 139 | #if ADB_TRACE |
| 140 | if (ADB_TRACING) |
| 141 | { |
| 142 | unsigned command = (*ppacket)->msg.command; |
| 143 | int len = (*ppacket)->msg.data_length; |
| 144 | char cmd[5]; |
| 145 | int n; |
| 146 | |
| 147 | for (n = 0; n < 4; n++) { |
| 148 | int b = (command >> (n*8)) & 255; |
| 149 | if (b >= 32 && b < 127) |
| 150 | cmd[n] = (char)b; |
| 151 | else |
| 152 | cmd[n] = '.'; |
| 153 | } |
| 154 | cmd[4] = 0; |
| 155 | |
| 156 | D("write_packet: %d [%08x %s] %08x %08x (%d) ", |
| 157 | fd, command, cmd, (*ppacket)->msg.arg0, (*ppacket)->msg.arg1, len); |
| 158 | dump_hex((*ppacket)->data, len); |
| 159 | } |
| 160 | #endif |
| 161 | len = sizeof(ppacket); |
| 162 | while(len > 0) { |
| 163 | r = adb_write(fd, p, len); |
| 164 | if(r > 0) { |
| 165 | len -= r; |
| 166 | p += r; |
| 167 | } else { |
| 168 | D("write_packet: %d error %d %d\n", fd, r, errno); |
| 169 | if((r < 0) && (errno == EINTR)) continue; |
| 170 | return -1; |
| 171 | } |
| 172 | } |
| 173 | return 0; |
| 174 | } |
| 175 | |
| 176 | static void transport_socket_events(int fd, unsigned events, void *_t) |
| 177 | { |
| 178 | if(events & FDE_READ){ |
| 179 | apacket *p = 0; |
| 180 | if(read_packet(fd, &p)){ |
| 181 | D("failed to read packet from transport socket on fd %d\n", fd); |
| 182 | } else { |
| 183 | handle_packet(p, (atransport *) _t); |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | void send_packet(apacket *p, atransport *t) |
| 189 | { |
| 190 | unsigned char *x; |
| 191 | unsigned sum; |
| 192 | unsigned count; |
| 193 | |
| 194 | p->msg.magic = p->msg.command ^ 0xffffffff; |
| 195 | |
| 196 | count = p->msg.data_length; |
| 197 | x = (unsigned char *) p->data; |
| 198 | sum = 0; |
| 199 | while(count-- > 0){ |
| 200 | sum += *x++; |
| 201 | } |
| 202 | p->msg.data_check = sum; |
| 203 | |
| 204 | print_packet("send", p); |
| 205 | |
| 206 | if (t == NULL) { |
| 207 | fatal_errno("Transport is null"); |
| 208 | D("Transport is null \n"); |
| 209 | } |
| 210 | |
| 211 | if(write_packet(t->transport_socket, &p)){ |
| 212 | fatal_errno("cannot enqueue packet on transport socket"); |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | /* The transport is opened by transport_register_func before |
| 217 | ** the input and output threads are started. |
| 218 | ** |
| 219 | ** The output thread issues a SYNC(1, token) message to let |
| 220 | ** the input thread know to start things up. In the event |
| 221 | ** of transport IO failure, the output thread will post a |
| 222 | ** SYNC(0,0) message to ensure shutdown. |
| 223 | ** |
| 224 | ** The transport will not actually be closed until both |
| 225 | ** threads exit, but the input thread will kick the transport |
| 226 | ** on its way out to disconnect the underlying device. |
| 227 | */ |
| 228 | |
| 229 | static void *output_thread(void *_t) |
| 230 | { |
| 231 | atransport *t = _t; |
| 232 | apacket *p; |
| 233 | |
| 234 | D("from_remote: starting thread for transport %p, on fd %d\n", t, t->fd ); |
| 235 | |
| 236 | D("from_remote: transport %p SYNC online (%d)\n", t, t->sync_token + 1); |
| 237 | p = get_apacket(); |
| 238 | p->msg.command = A_SYNC; |
| 239 | p->msg.arg0 = 1; |
| 240 | p->msg.arg1 = ++(t->sync_token); |
| 241 | p->msg.magic = A_SYNC ^ 0xffffffff; |
| 242 | if(write_packet(t->fd, &p)) { |
| 243 | put_apacket(p); |
| 244 | D("from_remote: failed to write SYNC apacket to transport %p", t); |
| 245 | goto oops; |
| 246 | } |
| 247 | |
| 248 | D("from_remote: data pump for transport %p\n", t); |
| 249 | for(;;) { |
| 250 | p = get_apacket(); |
| 251 | |
| 252 | if(t->read_from_remote(p, t) == 0){ |
| 253 | D("from_remote: received remote packet, sending to transport %p\n", |
| 254 | t); |
| 255 | if(write_packet(t->fd, &p)){ |
| 256 | put_apacket(p); |
| 257 | D("from_remote: failed to write apacket to transport %p", t); |
| 258 | goto oops; |
| 259 | } |
| 260 | } else { |
| 261 | D("from_remote: remote read failed for transport %p\n", p); |
| 262 | put_apacket(p); |
| 263 | break; |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | D("from_remote: SYNC offline for transport %p\n", t); |
| 268 | p = get_apacket(); |
| 269 | p->msg.command = A_SYNC; |
| 270 | p->msg.arg0 = 0; |
| 271 | p->msg.arg1 = 0; |
| 272 | p->msg.magic = A_SYNC ^ 0xffffffff; |
| 273 | if(write_packet(t->fd, &p)) { |
| 274 | put_apacket(p); |
| 275 | D("from_remote: failed to write SYNC apacket to transport %p", t); |
| 276 | } |
| 277 | |
| 278 | oops: |
| 279 | D("from_remote: thread is exiting for transport %p\n", t); |
| 280 | kick_transport(t); |
| 281 | transport_unref(t); |
| 282 | return 0; |
| 283 | } |
| 284 | |
| 285 | static void *input_thread(void *_t) |
| 286 | { |
| 287 | atransport *t = _t; |
| 288 | apacket *p; |
| 289 | int active = 0; |
| 290 | |
| 291 | D("to_remote: starting input_thread for %p, reading from fd %d\n", |
| 292 | t, t->fd); |
| 293 | |
| 294 | for(;;){ |
| 295 | if(read_packet(t->fd, &p)) { |
| 296 | D("to_remote: failed to read apacket from transport %p on fd %d\n", |
| 297 | t, t->fd ); |
| 298 | break; |
| 299 | } |
| 300 | if(p->msg.command == A_SYNC){ |
| 301 | if(p->msg.arg0 == 0) { |
| 302 | D("to_remote: transport %p SYNC offline\n", t); |
| 303 | put_apacket(p); |
| 304 | break; |
| 305 | } else { |
| 306 | if(p->msg.arg1 == t->sync_token) { |
| 307 | D("to_remote: transport %p SYNC online\n", t); |
| 308 | active = 1; |
| 309 | } else { |
| 310 | D("to_remote: trandport %p ignoring SYNC %d != %d\n", |
| 311 | t, p->msg.arg1, t->sync_token); |
| 312 | } |
| 313 | } |
| 314 | } else { |
| 315 | if(active) { |
| 316 | D("to_remote: transport %p got packet, sending to remote\n", t); |
| 317 | t->write_to_remote(p, t); |
| 318 | } else { |
| 319 | D("to_remote: transport %p ignoring packet while offline\n", t); |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | put_apacket(p); |
| 324 | } |
| 325 | |
| 326 | // this is necessary to avoid a race condition that occured when a transport closes |
| 327 | // while a client socket is still active. |
| 328 | close_all_sockets(t); |
| 329 | |
| 330 | D("to_remote: thread is exiting for transport %p, fd %d\n", t, t->fd); |
| 331 | kick_transport(t); |
| 332 | transport_unref(t); |
| 333 | return 0; |
| 334 | } |
| 335 | |
| 336 | |
| 337 | static int transport_registration_send = -1; |
| 338 | static int transport_registration_recv = -1; |
| 339 | static fdevent transport_registration_fde; |
| 340 | |
| 341 | |
| 342 | #if ADB_HOST |
| 343 | static int list_transports_msg(char* buffer, size_t bufferlen) |
| 344 | { |
| 345 | char head[5]; |
| 346 | int len; |
| 347 | |
| 348 | len = list_transports(buffer+4, bufferlen-4); |
| 349 | snprintf(head, sizeof(head), "%04x", len); |
| 350 | memcpy(buffer, head, 4); |
| 351 | len += 4; |
| 352 | return len; |
| 353 | } |
| 354 | |
| 355 | /* this adds support required by the 'track-devices' service. |
| 356 | * this is used to send the content of "list_transport" to any |
| 357 | * number of client connections that want it through a single |
| 358 | * live TCP connection |
| 359 | */ |
| 360 | typedef struct device_tracker device_tracker; |
| 361 | struct device_tracker { |
| 362 | asocket socket; |
| 363 | int update_needed; |
| 364 | device_tracker* next; |
| 365 | }; |
| 366 | |
| 367 | /* linked list of all device trackers */ |
| 368 | static device_tracker* device_tracker_list; |
| 369 | |
| 370 | static void |
| 371 | device_tracker_remove( device_tracker* tracker ) |
| 372 | { |
| 373 | device_tracker** pnode = &device_tracker_list; |
| 374 | device_tracker* node = *pnode; |
| 375 | |
| 376 | adb_mutex_lock( &transport_lock ); |
| 377 | while (node) { |
| 378 | if (node == tracker) { |
| 379 | *pnode = node->next; |
| 380 | break; |
| 381 | } |
| 382 | pnode = &node->next; |
| 383 | node = *pnode; |
| 384 | } |
| 385 | adb_mutex_unlock( &transport_lock ); |
| 386 | } |
| 387 | |
| 388 | static void |
| 389 | device_tracker_close( asocket* socket ) |
| 390 | { |
| 391 | device_tracker* tracker = (device_tracker*) socket; |
| 392 | asocket* peer = socket->peer; |
| 393 | |
| 394 | D( "device tracker %p removed\n", tracker); |
| 395 | if (peer) { |
| 396 | peer->peer = NULL; |
| 397 | peer->close(peer); |
| 398 | } |
| 399 | device_tracker_remove(tracker); |
| 400 | free(tracker); |
| 401 | } |
| 402 | |
| 403 | static int |
| 404 | device_tracker_enqueue( asocket* socket, apacket* p ) |
| 405 | { |
| 406 | /* you can't read from a device tracker, close immediately */ |
| 407 | put_apacket(p); |
| 408 | device_tracker_close(socket); |
| 409 | return -1; |
| 410 | } |
| 411 | |
| 412 | static int |
| 413 | device_tracker_send( device_tracker* tracker, |
| 414 | const char* buffer, |
| 415 | int len ) |
| 416 | { |
| 417 | apacket* p = get_apacket(); |
| 418 | asocket* peer = tracker->socket.peer; |
| 419 | |
| 420 | memcpy(p->data, buffer, len); |
| 421 | p->len = len; |
| 422 | return peer->enqueue( peer, p ); |
| 423 | } |
| 424 | |
| 425 | |
| 426 | static void |
| 427 | device_tracker_ready( asocket* socket ) |
| 428 | { |
| 429 | device_tracker* tracker = (device_tracker*) socket; |
| 430 | |
| 431 | /* we want to send the device list when the tracker connects |
| 432 | * for the first time, even if no update occured */ |
| 433 | if (tracker->update_needed > 0) { |
| 434 | char buffer[1024]; |
| 435 | int len; |
| 436 | |
| 437 | tracker->update_needed = 0; |
| 438 | |
| 439 | len = list_transports_msg(buffer, sizeof(buffer)); |
| 440 | device_tracker_send(tracker, buffer, len); |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | |
| 445 | asocket* |
| 446 | create_device_tracker(void) |
| 447 | { |
| 448 | device_tracker* tracker = calloc(1,sizeof(*tracker)); |
| 449 | |
| 450 | if(tracker == 0) fatal("cannot allocate device tracker"); |
| 451 | |
| 452 | D( "device tracker %p created\n", tracker); |
| 453 | |
| 454 | tracker->socket.enqueue = device_tracker_enqueue; |
| 455 | tracker->socket.ready = device_tracker_ready; |
| 456 | tracker->socket.close = device_tracker_close; |
| 457 | tracker->update_needed = 1; |
| 458 | |
| 459 | tracker->next = device_tracker_list; |
| 460 | device_tracker_list = tracker; |
| 461 | |
| 462 | return &tracker->socket; |
| 463 | } |
| 464 | |
| 465 | |
| 466 | /* call this function each time the transport list has changed */ |
| 467 | void update_transports(void) |
| 468 | { |
| 469 | char buffer[1024]; |
| 470 | int len; |
| 471 | device_tracker* tracker; |
| 472 | |
| 473 | len = list_transports_msg(buffer, sizeof(buffer)); |
| 474 | |
| 475 | tracker = device_tracker_list; |
| 476 | while (tracker != NULL) { |
| 477 | device_tracker* next = tracker->next; |
| 478 | /* note: this may destroy the tracker if the connection is closed */ |
| 479 | device_tracker_send(tracker, buffer, len); |
| 480 | tracker = next; |
| 481 | } |
| 482 | } |
| 483 | #else |
| 484 | void update_transports(void) |
| 485 | { |
| 486 | // nothing to do on the device side |
| 487 | } |
| 488 | #endif // ADB_HOST |
| 489 | |
| 490 | typedef struct tmsg tmsg; |
| 491 | struct tmsg |
| 492 | { |
| 493 | atransport *transport; |
| 494 | int action; |
| 495 | }; |
| 496 | |
| 497 | static int |
| 498 | transport_read_action(int fd, struct tmsg* m) |
| 499 | { |
| 500 | char *p = (char*)m; |
| 501 | int len = sizeof(*m); |
| 502 | int r; |
| 503 | |
| 504 | while(len > 0) { |
| 505 | r = adb_read(fd, p, len); |
| 506 | if(r > 0) { |
| 507 | len -= r; |
| 508 | p += r; |
| 509 | } else { |
| 510 | if((r < 0) && (errno == EINTR)) continue; |
| 511 | D("transport_read_action: on fd %d, error %d: %s\n", |
| 512 | fd, errno, strerror(errno)); |
| 513 | return -1; |
| 514 | } |
| 515 | } |
| 516 | return 0; |
| 517 | } |
| 518 | |
| 519 | static int |
| 520 | transport_write_action(int fd, struct tmsg* m) |
| 521 | { |
| 522 | char *p = (char*)m; |
| 523 | int len = sizeof(*m); |
| 524 | int r; |
| 525 | |
| 526 | while(len > 0) { |
| 527 | r = adb_write(fd, p, len); |
| 528 | if(r > 0) { |
| 529 | len -= r; |
| 530 | p += r; |
| 531 | } else { |
| 532 | if((r < 0) && (errno == EINTR)) continue; |
| 533 | D("transport_write_action: on fd %d, error %d: %s\n", |
| 534 | fd, errno, strerror(errno)); |
| 535 | return -1; |
| 536 | } |
| 537 | } |
| 538 | return 0; |
| 539 | } |
| 540 | |
| 541 | static void transport_registration_func(int _fd, unsigned ev, void *data) |
| 542 | { |
| 543 | tmsg m; |
| 544 | adb_thread_t output_thread_ptr; |
| 545 | adb_thread_t input_thread_ptr; |
| 546 | int s[2]; |
| 547 | atransport *t; |
| 548 | |
| 549 | if(!(ev & FDE_READ)) { |
| 550 | return; |
| 551 | } |
| 552 | |
| 553 | if(transport_read_action(_fd, &m)) { |
| 554 | fatal_errno("cannot read transport registration socket"); |
| 555 | } |
| 556 | |
| 557 | t = m.transport; |
| 558 | |
| 559 | if(m.action == 0){ |
| 560 | D("transport: %p removing and free'ing %d\n", t, t->transport_socket); |
| 561 | |
| 562 | /* IMPORTANT: the remove closes one half of the |
| 563 | ** socket pair. The close closes the other half. |
| 564 | */ |
| 565 | fdevent_remove(&(t->transport_fde)); |
| 566 | adb_close(t->fd); |
| 567 | |
| 568 | adb_mutex_lock(&transport_lock); |
| 569 | t->next->prev = t->prev; |
| 570 | t->prev->next = t->next; |
| 571 | adb_mutex_unlock(&transport_lock); |
| 572 | |
| 573 | run_transport_disconnects(t); |
| 574 | |
| 575 | if (t->product) |
| 576 | free(t->product); |
| 577 | if (t->serial) |
| 578 | free(t->serial); |
| 579 | |
| 580 | memset(t,0xee,sizeof(atransport)); |
| 581 | free(t); |
| 582 | |
| 583 | update_transports(); |
| 584 | return; |
| 585 | } |
| 586 | |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame^] | 587 | /* don't create transport threads for inaccessible devices */ |
| 588 | if (t->connection_state != CS_NOPERM) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 589 | /* initial references are the two threads */ |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame^] | 590 | t->ref_count = 2; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 591 | |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame^] | 592 | if(adb_socketpair(s)) { |
| 593 | fatal_errno("cannot open transport socketpair"); |
| 594 | } |
| 595 | |
| 596 | D("transport: %p (%d,%d) starting\n", t, s[0], s[1]); |
| 597 | |
| 598 | t->transport_socket = s[0]; |
| 599 | t->fd = s[1]; |
| 600 | |
| 601 | D("transport: %p install %d\n", t, t->transport_socket ); |
| 602 | fdevent_install(&(t->transport_fde), |
| 603 | t->transport_socket, |
| 604 | transport_socket_events, |
| 605 | t); |
| 606 | |
| 607 | fdevent_set(&(t->transport_fde), FDE_READ); |
| 608 | |
| 609 | if(adb_thread_create(&input_thread_ptr, input_thread, t)){ |
| 610 | fatal_errno("cannot create input thread"); |
| 611 | } |
| 612 | |
| 613 | if(adb_thread_create(&output_thread_ptr, output_thread, t)){ |
| 614 | fatal_errno("cannot create output thread"); |
| 615 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 616 | } |
| 617 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 618 | /* put us on the master device list */ |
| 619 | adb_mutex_lock(&transport_lock); |
| 620 | t->next = &transport_list; |
| 621 | t->prev = transport_list.prev; |
| 622 | t->next->prev = t; |
| 623 | t->prev->next = t; |
| 624 | adb_mutex_unlock(&transport_lock); |
| 625 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 626 | t->disconnects.next = t->disconnects.prev = &t->disconnects; |
| 627 | |
| 628 | update_transports(); |
| 629 | } |
| 630 | |
| 631 | void init_transport_registration(void) |
| 632 | { |
| 633 | int s[2]; |
| 634 | |
| 635 | if(adb_socketpair(s)){ |
| 636 | fatal_errno("cannot open transport registration socketpair"); |
| 637 | } |
| 638 | |
| 639 | transport_registration_send = s[0]; |
| 640 | transport_registration_recv = s[1]; |
| 641 | |
| 642 | fdevent_install(&transport_registration_fde, |
| 643 | transport_registration_recv, |
| 644 | transport_registration_func, |
| 645 | 0); |
| 646 | |
| 647 | fdevent_set(&transport_registration_fde, FDE_READ); |
| 648 | } |
| 649 | |
| 650 | /* the fdevent select pump is single threaded */ |
| 651 | static void register_transport(atransport *transport) |
| 652 | { |
| 653 | tmsg m; |
| 654 | m.transport = transport; |
| 655 | m.action = 1; |
| 656 | D("transport: %p registered\n", transport); |
| 657 | if(transport_write_action(transport_registration_send, &m)) { |
| 658 | fatal_errno("cannot write transport registration socket\n"); |
| 659 | } |
| 660 | } |
| 661 | |
| 662 | static void remove_transport(atransport *transport) |
| 663 | { |
| 664 | tmsg m; |
| 665 | m.transport = transport; |
| 666 | m.action = 0; |
| 667 | D("transport: %p removed\n", transport); |
| 668 | if(transport_write_action(transport_registration_send, &m)) { |
| 669 | fatal_errno("cannot write transport registration socket\n"); |
| 670 | } |
| 671 | } |
| 672 | |
| 673 | |
| 674 | static void transport_unref(atransport *t) |
| 675 | { |
| 676 | if (t) { |
| 677 | adb_mutex_lock(&transport_lock); |
| 678 | t->ref_count--; |
| 679 | D("transport: %p R- (ref=%d)\n", t, t->ref_count); |
| 680 | if (t->ref_count == 0) { |
| 681 | D("transport: %p kicking and closing\n", t); |
| 682 | if (!t->kicked) { |
| 683 | t->kicked = 1; |
| 684 | t->kick(t); |
| 685 | } |
| 686 | t->close(t); |
| 687 | remove_transport(t); |
| 688 | } |
| 689 | adb_mutex_unlock(&transport_lock); |
| 690 | } |
| 691 | } |
| 692 | |
| 693 | void add_transport_disconnect(atransport* t, adisconnect* dis) |
| 694 | { |
| 695 | adb_mutex_lock(&transport_lock); |
| 696 | dis->next = &t->disconnects; |
| 697 | dis->prev = dis->next->prev; |
| 698 | dis->prev->next = dis; |
| 699 | dis->next->prev = dis; |
| 700 | adb_mutex_unlock(&transport_lock); |
| 701 | } |
| 702 | |
| 703 | void remove_transport_disconnect(atransport* t, adisconnect* dis) |
| 704 | { |
| 705 | dis->prev->next = dis->next; |
| 706 | dis->next->prev = dis->prev; |
| 707 | dis->next = dis->prev = dis; |
| 708 | } |
| 709 | |
| 710 | |
| 711 | atransport *acquire_one_transport(int state, transport_type ttype, const char* serial, char** error_out) |
| 712 | { |
| 713 | atransport *t; |
| 714 | atransport *result = NULL; |
| 715 | int ambiguous = 0; |
| 716 | |
| 717 | retry: |
| 718 | if (error_out) |
| 719 | *error_out = "device not found"; |
| 720 | |
| 721 | adb_mutex_lock(&transport_lock); |
| 722 | for (t = transport_list.next; t != &transport_list; t = t->next) { |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame^] | 723 | if (t->connection_state == CS_NOPERM) continue; |
| 724 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 725 | /* check for matching serial number */ |
| 726 | if (serial) { |
| 727 | if (t->serial && !strcmp(serial, t->serial)) { |
| 728 | result = t; |
| 729 | break; |
| 730 | } |
| 731 | } else { |
| 732 | if (ttype == kTransportUsb && t->type == kTransportUsb) { |
| 733 | if (result) { |
| 734 | if (error_out) |
| 735 | *error_out = "more than one device"; |
| 736 | ambiguous = 1; |
| 737 | result = NULL; |
| 738 | break; |
| 739 | } |
| 740 | result = t; |
| 741 | } else if (ttype == kTransportLocal && t->type == kTransportLocal) { |
| 742 | if (result) { |
| 743 | if (error_out) |
| 744 | *error_out = "more than one emulator"; |
| 745 | ambiguous = 1; |
| 746 | result = NULL; |
| 747 | break; |
| 748 | } |
| 749 | result = t; |
| 750 | } else if (ttype == kTransportAny) { |
| 751 | if (result) { |
| 752 | if (error_out) |
| 753 | *error_out = "more than one device and emulator"; |
| 754 | ambiguous = 1; |
| 755 | result = NULL; |
| 756 | break; |
| 757 | } |
| 758 | result = t; |
| 759 | } |
| 760 | } |
| 761 | } |
| 762 | adb_mutex_unlock(&transport_lock); |
| 763 | |
| 764 | if (result) { |
| 765 | /* offline devices are ignored -- they are either being born or dying */ |
| 766 | if (result && result->connection_state == CS_OFFLINE) { |
| 767 | if (error_out) |
| 768 | *error_out = "device offline"; |
| 769 | result = NULL; |
| 770 | } |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame^] | 771 | if (result && result->connection_state == CS_NOPERM) { |
| 772 | if (error_out) |
| 773 | *error_out = "no permissions for device"; |
| 774 | result = NULL; |
| 775 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 776 | |
| 777 | /* check for required connection state */ |
| 778 | if (result && state != CS_ANY && result->connection_state != state) { |
| 779 | if (error_out) |
| 780 | *error_out = "invalid device state"; |
| 781 | result = NULL; |
| 782 | } |
| 783 | } |
| 784 | |
| 785 | if (result) { |
| 786 | /* found one that we can take */ |
| 787 | if (error_out) |
| 788 | *error_out = NULL; |
| 789 | } else if (state != CS_ANY && (serial || !ambiguous)) { |
| 790 | adb_sleep_ms(1000); |
| 791 | goto retry; |
| 792 | } |
| 793 | |
| 794 | return result; |
| 795 | } |
| 796 | |
| 797 | #if ADB_HOST |
| 798 | static const char *statename(atransport *t) |
| 799 | { |
| 800 | switch(t->connection_state){ |
| 801 | case CS_OFFLINE: return "offline"; |
| 802 | case CS_BOOTLOADER: return "bootloader"; |
| 803 | case CS_DEVICE: return "device"; |
| 804 | case CS_HOST: return "host"; |
| 805 | case CS_RECOVERY: return "recovery"; |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame^] | 806 | case CS_NOPERM: return "no permissions"; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 807 | default: return "unknown"; |
| 808 | } |
| 809 | } |
| 810 | |
| 811 | int list_transports(char *buf, size_t bufsize) |
| 812 | { |
| 813 | char* p = buf; |
| 814 | char* end = buf + bufsize; |
| 815 | int len; |
| 816 | atransport *t; |
| 817 | |
| 818 | /* XXX OVERRUN PROBLEMS XXX */ |
| 819 | adb_mutex_lock(&transport_lock); |
| 820 | for(t = transport_list.next; t != &transport_list; t = t->next) { |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame^] | 821 | const char* serial = t->serial; |
| 822 | if (!serial || !serial[0]) |
| 823 | serial = "????????????"; |
| 824 | len = snprintf(p, end - p, "%s\t%s\n", serial, statename(t)); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 825 | |
| 826 | if (p + len >= end) { |
| 827 | /* discard last line if buffer is too short */ |
| 828 | break; |
| 829 | } |
| 830 | p += len; |
| 831 | } |
| 832 | p[0] = 0; |
| 833 | adb_mutex_unlock(&transport_lock); |
| 834 | return p - buf; |
| 835 | } |
| 836 | |
| 837 | |
| 838 | /* hack for osx */ |
| 839 | void close_usb_devices() |
| 840 | { |
| 841 | atransport *t; |
| 842 | |
| 843 | adb_mutex_lock(&transport_lock); |
| 844 | for(t = transport_list.next; t != &transport_list; t = t->next) { |
| 845 | if ( !t->kicked ) { |
| 846 | t->kicked = 1; |
| 847 | t->kick(t); |
| 848 | } |
| 849 | } |
| 850 | adb_mutex_unlock(&transport_lock); |
| 851 | } |
| 852 | #endif // ADB_HOST |
| 853 | |
| 854 | void register_socket_transport(int s, const char *serial, int port) |
| 855 | { |
| 856 | atransport *t = calloc(1, sizeof(atransport)); |
| 857 | D("transport: %p init'ing for socket %d, on port %d\n", t, s, port); |
| 858 | if ( init_socket_transport(t, s, port) < 0 ) { |
| 859 | adb_close(s); |
| 860 | free(t); |
| 861 | return; |
| 862 | } |
| 863 | if(serial) { |
| 864 | t->serial = strdup(serial); |
| 865 | } |
| 866 | register_transport(t); |
| 867 | } |
| 868 | |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame^] | 869 | void register_usb_transport(usb_handle *usb, const char *serial, unsigned writeable) |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 870 | { |
| 871 | atransport *t = calloc(1, sizeof(atransport)); |
| 872 | D("transport: %p init'ing for usb_handle %p (sn='%s')\n", t, usb, |
| 873 | serial ? serial : ""); |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame^] | 874 | init_usb_transport(t, usb, (writeable ? CS_OFFLINE : CS_NOPERM)); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 875 | if(serial) { |
| 876 | t->serial = strdup(serial); |
| 877 | } |
| 878 | register_transport(t); |
| 879 | } |
| 880 | |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame^] | 881 | /* this should only be used for transports with connection_state == CS_NOPERM */ |
| 882 | void unregister_usb_transport(usb_handle *usb) |
| 883 | { |
| 884 | atransport *t; |
| 885 | adb_mutex_lock(&transport_lock); |
| 886 | for(t = transport_list.next; t != &transport_list; t = t->next) { |
| 887 | if (t->usb == usb && t->connection_state == CS_NOPERM) { |
| 888 | t->next->prev = t->prev; |
| 889 | t->prev->next = t->next; |
| 890 | break; |
| 891 | } |
| 892 | } |
| 893 | adb_mutex_unlock(&transport_lock); |
| 894 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 895 | |
| 896 | #undef TRACE_TAG |
| 897 | #define TRACE_TAG TRACE_RWX |
| 898 | |
| 899 | int readx(int fd, void *ptr, size_t len) |
| 900 | { |
| 901 | char *p = ptr; |
| 902 | int r; |
| 903 | #if ADB_TRACE |
| 904 | int len0 = len; |
| 905 | #endif |
| 906 | D("readx: %d %p %d\n", fd, ptr, (int)len); |
| 907 | while(len > 0) { |
| 908 | r = adb_read(fd, p, len); |
| 909 | if(r > 0) { |
| 910 | len -= r; |
| 911 | p += r; |
| 912 | } else { |
| 913 | D("readx: %d %d %s\n", fd, r, strerror(errno)); |
| 914 | if((r < 0) && (errno == EINTR)) continue; |
| 915 | return -1; |
| 916 | } |
| 917 | } |
| 918 | |
| 919 | #if ADB_TRACE |
| 920 | D("readx: %d ok: ", fd); |
| 921 | dump_hex( ptr, len0 ); |
| 922 | #endif |
| 923 | return 0; |
| 924 | } |
| 925 | |
| 926 | int writex(int fd, const void *ptr, size_t len) |
| 927 | { |
| 928 | char *p = (char*) ptr; |
| 929 | int r; |
| 930 | |
| 931 | #if ADB_TRACE |
| 932 | D("writex: %d %p %d: ", fd, ptr, (int)len); |
| 933 | dump_hex( ptr, len ); |
| 934 | #endif |
| 935 | while(len > 0) { |
| 936 | r = adb_write(fd, p, len); |
| 937 | if(r > 0) { |
| 938 | len -= r; |
| 939 | p += r; |
| 940 | } else { |
| 941 | D("writex: %d %d %s\n", fd, r, strerror(errno)); |
| 942 | if((r < 0) && (errno == EINTR)) continue; |
| 943 | return -1; |
| 944 | } |
| 945 | } |
| 946 | |
| 947 | D("writex: %d ok\n", fd); |
| 948 | return 0; |
| 949 | } |
| 950 | |
| 951 | int check_header(apacket *p) |
| 952 | { |
| 953 | if(p->msg.magic != (p->msg.command ^ 0xffffffff)) { |
| 954 | D("check_header(): invalid magic\n"); |
| 955 | return -1; |
| 956 | } |
| 957 | |
| 958 | if(p->msg.data_length > MAX_PAYLOAD) { |
| 959 | D("check_header(): %d > MAX_PAYLOAD\n", p->msg.data_length); |
| 960 | return -1; |
| 961 | } |
| 962 | |
| 963 | return 0; |
| 964 | } |
| 965 | |
| 966 | int check_data(apacket *p) |
| 967 | { |
| 968 | unsigned count, sum; |
| 969 | unsigned char *x; |
| 970 | |
| 971 | count = p->msg.data_length; |
| 972 | x = p->data; |
| 973 | sum = 0; |
| 974 | while(count-- > 0) { |
| 975 | sum += *x++; |
| 976 | } |
| 977 | |
| 978 | if(sum != p->msg.data_check) { |
| 979 | return -1; |
| 980 | } else { |
| 981 | return 0; |
| 982 | } |
| 983 | } |
| 984 | |