Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 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 | |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 17 | //#define LOG_NDEBUG 0 |
| 18 | #define LOG_TAG "ARTSPConnection" |
| 19 | #include <utils/Log.h> |
| 20 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 21 | #include "ARTSPConnection.h" |
| 22 | |
| 23 | #include <media/stagefright/foundation/ABuffer.h> |
| 24 | #include <media/stagefright/foundation/ADebug.h> |
| 25 | #include <media/stagefright/foundation/AMessage.h> |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 26 | #include <media/stagefright/foundation/base64.h> |
Andreas Huber | 0416da7 | 2010-08-26 11:17:32 -0700 | [diff] [blame] | 27 | #include <media/stagefright/MediaErrors.h> |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 28 | |
| 29 | #include <arpa/inet.h> |
| 30 | #include <fcntl.h> |
| 31 | #include <netdb.h> |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 32 | #include <openssl/md5.h> |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 33 | #include <sys/socket.h> |
| 34 | |
| 35 | namespace android { |
| 36 | |
| 37 | // static |
| 38 | const int64_t ARTSPConnection::kSelectTimeoutUs = 1000ll; |
| 39 | |
| 40 | ARTSPConnection::ARTSPConnection() |
| 41 | : mState(DISCONNECTED), |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 42 | mAuthType(NONE), |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 43 | mSocket(-1), |
| 44 | mConnectionID(0), |
| 45 | mNextCSeq(0), |
| 46 | mReceiveResponseEventPending(false) { |
| 47 | } |
| 48 | |
| 49 | ARTSPConnection::~ARTSPConnection() { |
| 50 | if (mSocket >= 0) { |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 51 | LOGE("Connection is still open, closing the socket."); |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 52 | close(mSocket); |
| 53 | mSocket = -1; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | void ARTSPConnection::connect(const char *url, const sp<AMessage> &reply) { |
| 58 | sp<AMessage> msg = new AMessage(kWhatConnect, id()); |
| 59 | msg->setString("url", url); |
| 60 | msg->setMessage("reply", reply); |
| 61 | msg->post(); |
| 62 | } |
| 63 | |
| 64 | void ARTSPConnection::disconnect(const sp<AMessage> &reply) { |
| 65 | sp<AMessage> msg = new AMessage(kWhatDisconnect, id()); |
| 66 | msg->setMessage("reply", reply); |
| 67 | msg->post(); |
| 68 | } |
| 69 | |
| 70 | void ARTSPConnection::sendRequest( |
| 71 | const char *request, const sp<AMessage> &reply) { |
| 72 | sp<AMessage> msg = new AMessage(kWhatSendRequest, id()); |
| 73 | msg->setString("request", request); |
| 74 | msg->setMessage("reply", reply); |
| 75 | msg->post(); |
| 76 | } |
| 77 | |
Andreas Huber | 0416da7 | 2010-08-26 11:17:32 -0700 | [diff] [blame] | 78 | void ARTSPConnection::observeBinaryData(const sp<AMessage> &reply) { |
| 79 | sp<AMessage> msg = new AMessage(kWhatObserveBinaryData, id()); |
| 80 | msg->setMessage("reply", reply); |
| 81 | msg->post(); |
| 82 | } |
| 83 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 84 | void ARTSPConnection::onMessageReceived(const sp<AMessage> &msg) { |
| 85 | switch (msg->what()) { |
| 86 | case kWhatConnect: |
| 87 | onConnect(msg); |
| 88 | break; |
| 89 | |
| 90 | case kWhatDisconnect: |
| 91 | onDisconnect(msg); |
| 92 | break; |
| 93 | |
| 94 | case kWhatCompleteConnection: |
| 95 | onCompleteConnection(msg); |
| 96 | break; |
| 97 | |
| 98 | case kWhatSendRequest: |
| 99 | onSendRequest(msg); |
| 100 | break; |
| 101 | |
| 102 | case kWhatReceiveResponse: |
| 103 | onReceiveResponse(); |
| 104 | break; |
| 105 | |
Andreas Huber | 0416da7 | 2010-08-26 11:17:32 -0700 | [diff] [blame] | 106 | case kWhatObserveBinaryData: |
| 107 | { |
| 108 | CHECK(msg->findMessage("reply", &mObserveBinaryMessage)); |
| 109 | break; |
| 110 | } |
| 111 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 112 | default: |
| 113 | TRESPASS(); |
| 114 | break; |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | // static |
| 119 | bool ARTSPConnection::ParseURL( |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 120 | const char *url, AString *host, unsigned *port, AString *path, |
| 121 | AString *user, AString *pass) { |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 122 | host->clear(); |
| 123 | *port = 0; |
| 124 | path->clear(); |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 125 | user->clear(); |
| 126 | pass->clear(); |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 127 | |
| 128 | if (strncasecmp("rtsp://", url, 7)) { |
| 129 | return false; |
| 130 | } |
| 131 | |
| 132 | const char *slashPos = strchr(&url[7], '/'); |
| 133 | |
| 134 | if (slashPos == NULL) { |
| 135 | host->setTo(&url[7]); |
| 136 | path->setTo("/"); |
| 137 | } else { |
| 138 | host->setTo(&url[7], slashPos - &url[7]); |
| 139 | path->setTo(slashPos); |
| 140 | } |
| 141 | |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 142 | ssize_t atPos = host->find("@"); |
| 143 | |
| 144 | if (atPos >= 0) { |
| 145 | // Split of user:pass@ from hostname. |
| 146 | |
| 147 | AString userPass(*host, 0, atPos); |
| 148 | host->erase(0, atPos + 1); |
| 149 | |
| 150 | ssize_t colonPos = userPass.find(":"); |
| 151 | |
| 152 | if (colonPos < 0) { |
| 153 | *user = userPass; |
| 154 | } else { |
| 155 | user->setTo(userPass, 0, colonPos); |
| 156 | pass->setTo(userPass, colonPos + 1, userPass.size() - colonPos - 1); |
| 157 | } |
| 158 | } |
| 159 | |
Mike Lockwood | 5a23f8c | 2010-07-15 14:58:25 -0400 | [diff] [blame] | 160 | const char *colonPos = strchr(host->c_str(), ':'); |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 161 | |
| 162 | if (colonPos != NULL) { |
| 163 | unsigned long x; |
| 164 | if (!ParseSingleUnsignedLong(colonPos + 1, &x) || x >= 65536) { |
| 165 | return false; |
| 166 | } |
| 167 | |
| 168 | *port = x; |
| 169 | |
| 170 | size_t colonOffset = colonPos - host->c_str(); |
| 171 | size_t trailing = host->size() - colonOffset; |
| 172 | host->erase(colonOffset, trailing); |
| 173 | } else { |
| 174 | *port = 554; |
| 175 | } |
| 176 | |
| 177 | return true; |
| 178 | } |
| 179 | |
Andreas Huber | af063a6 | 2010-08-18 10:17:18 -0700 | [diff] [blame] | 180 | static void MakeSocketBlocking(int s, bool blocking) { |
| 181 | // Make socket non-blocking. |
| 182 | int flags = fcntl(s, F_GETFL, 0); |
| 183 | CHECK_NE(flags, -1); |
| 184 | |
| 185 | if (blocking) { |
| 186 | flags &= ~O_NONBLOCK; |
| 187 | } else { |
| 188 | flags |= O_NONBLOCK; |
| 189 | } |
| 190 | |
| 191 | CHECK_NE(fcntl(s, F_SETFL, flags), -1); |
| 192 | } |
| 193 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 194 | void ARTSPConnection::onConnect(const sp<AMessage> &msg) { |
| 195 | ++mConnectionID; |
| 196 | |
| 197 | if (mState != DISCONNECTED) { |
| 198 | close(mSocket); |
| 199 | mSocket = -1; |
| 200 | |
| 201 | flushPendingRequests(); |
| 202 | } |
| 203 | |
| 204 | mState = CONNECTING; |
| 205 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 206 | AString url; |
| 207 | CHECK(msg->findString("url", &url)); |
| 208 | |
Andreas Huber | f3d2bdf | 2010-09-15 11:18:13 -0700 | [diff] [blame] | 209 | sp<AMessage> reply; |
| 210 | CHECK(msg->findMessage("reply", &reply)); |
| 211 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 212 | AString host, path; |
| 213 | unsigned port; |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 214 | if (!ParseURL(url.c_str(), &host, &port, &path, &mUser, &mPass) |
| 215 | || (mUser.size() > 0 && mPass.size() == 0)) { |
| 216 | // If we have a user name but no password we have to give up |
| 217 | // right here, since we currently have no way of asking the user |
| 218 | // for this information. |
| 219 | |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 220 | LOGE("Malformed rtsp url %s", url.c_str()); |
Andreas Huber | f3d2bdf | 2010-09-15 11:18:13 -0700 | [diff] [blame] | 221 | |
| 222 | reply->setInt32("result", ERROR_MALFORMED); |
| 223 | reply->post(); |
| 224 | |
| 225 | mState = DISCONNECTED; |
| 226 | return; |
| 227 | } |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 228 | |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 229 | if (mUser.size() > 0) { |
| 230 | LOGV("user = '%s', pass = '%s'", mUser.c_str(), mPass.c_str()); |
| 231 | } |
| 232 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 233 | struct hostent *ent = gethostbyname(host.c_str()); |
Andreas Huber | f3d2bdf | 2010-09-15 11:18:13 -0700 | [diff] [blame] | 234 | if (ent == NULL) { |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 235 | LOGE("Unknown host %s", host.c_str()); |
Andreas Huber | f3d2bdf | 2010-09-15 11:18:13 -0700 | [diff] [blame] | 236 | |
| 237 | reply->setInt32("result", -ENOENT); |
| 238 | reply->post(); |
| 239 | |
| 240 | mState = DISCONNECTED; |
| 241 | return; |
| 242 | } |
| 243 | |
| 244 | mSocket = socket(AF_INET, SOCK_STREAM, 0); |
| 245 | |
| 246 | MakeSocketBlocking(mSocket, false); |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 247 | |
| 248 | struct sockaddr_in remote; |
| 249 | memset(remote.sin_zero, 0, sizeof(remote.sin_zero)); |
| 250 | remote.sin_family = AF_INET; |
| 251 | remote.sin_addr.s_addr = *(in_addr_t *)ent->h_addr; |
| 252 | remote.sin_port = htons(port); |
| 253 | |
| 254 | int err = ::connect( |
| 255 | mSocket, (const struct sockaddr *)&remote, sizeof(remote)); |
| 256 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 257 | reply->setInt32("server-ip", ntohl(remote.sin_addr.s_addr)); |
| 258 | |
| 259 | if (err < 0) { |
| 260 | if (errno == EINPROGRESS) { |
| 261 | sp<AMessage> msg = new AMessage(kWhatCompleteConnection, id()); |
| 262 | msg->setMessage("reply", reply); |
| 263 | msg->setInt32("connection-id", mConnectionID); |
| 264 | msg->post(); |
| 265 | return; |
| 266 | } |
| 267 | |
| 268 | reply->setInt32("result", -errno); |
| 269 | mState = DISCONNECTED; |
| 270 | |
| 271 | close(mSocket); |
| 272 | mSocket = -1; |
| 273 | } else { |
| 274 | reply->setInt32("result", OK); |
| 275 | mState = CONNECTED; |
| 276 | mNextCSeq = 1; |
| 277 | |
| 278 | postReceiveReponseEvent(); |
| 279 | } |
| 280 | |
| 281 | reply->post(); |
| 282 | } |
| 283 | |
| 284 | void ARTSPConnection::onDisconnect(const sp<AMessage> &msg) { |
| 285 | if (mState == CONNECTED || mState == CONNECTING) { |
| 286 | close(mSocket); |
| 287 | mSocket = -1; |
| 288 | |
| 289 | flushPendingRequests(); |
Andreas Huber | af063a6 | 2010-08-18 10:17:18 -0700 | [diff] [blame] | 290 | } |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 291 | |
| 292 | sp<AMessage> reply; |
| 293 | CHECK(msg->findMessage("reply", &reply)); |
| 294 | |
| 295 | reply->setInt32("result", OK); |
| 296 | mState = DISCONNECTED; |
| 297 | |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 298 | mUser.clear(); |
| 299 | mPass.clear(); |
| 300 | mAuthType = NONE; |
| 301 | mNonce.clear(); |
| 302 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 303 | reply->post(); |
| 304 | } |
| 305 | |
| 306 | void ARTSPConnection::onCompleteConnection(const sp<AMessage> &msg) { |
| 307 | sp<AMessage> reply; |
| 308 | CHECK(msg->findMessage("reply", &reply)); |
| 309 | |
| 310 | int32_t connectionID; |
| 311 | CHECK(msg->findInt32("connection-id", &connectionID)); |
| 312 | |
| 313 | if ((connectionID != mConnectionID) || mState != CONNECTING) { |
| 314 | // While we were attempting to connect, the attempt was |
| 315 | // cancelled. |
| 316 | reply->setInt32("result", -ECONNABORTED); |
| 317 | reply->post(); |
| 318 | return; |
| 319 | } |
| 320 | |
| 321 | struct timeval tv; |
| 322 | tv.tv_sec = 0; |
| 323 | tv.tv_usec = kSelectTimeoutUs; |
| 324 | |
| 325 | fd_set ws; |
| 326 | FD_ZERO(&ws); |
| 327 | FD_SET(mSocket, &ws); |
| 328 | |
| 329 | int res = select(mSocket + 1, NULL, &ws, NULL, &tv); |
| 330 | CHECK_GE(res, 0); |
| 331 | |
| 332 | if (res == 0) { |
| 333 | // Timed out. Not yet connected. |
| 334 | |
| 335 | msg->post(); |
| 336 | return; |
| 337 | } |
| 338 | |
| 339 | int err; |
| 340 | socklen_t optionLen = sizeof(err); |
| 341 | CHECK_EQ(getsockopt(mSocket, SOL_SOCKET, SO_ERROR, &err, &optionLen), 0); |
| 342 | CHECK_EQ(optionLen, (socklen_t)sizeof(err)); |
| 343 | |
| 344 | if (err != 0) { |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 345 | LOGE("err = %d (%s)", err, strerror(err)); |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 346 | |
| 347 | reply->setInt32("result", -err); |
| 348 | |
| 349 | mState = DISCONNECTED; |
| 350 | close(mSocket); |
| 351 | mSocket = -1; |
| 352 | } else { |
| 353 | reply->setInt32("result", OK); |
| 354 | mState = CONNECTED; |
| 355 | mNextCSeq = 1; |
| 356 | |
| 357 | postReceiveReponseEvent(); |
| 358 | } |
| 359 | |
| 360 | reply->post(); |
| 361 | } |
| 362 | |
| 363 | void ARTSPConnection::onSendRequest(const sp<AMessage> &msg) { |
| 364 | sp<AMessage> reply; |
| 365 | CHECK(msg->findMessage("reply", &reply)); |
| 366 | |
| 367 | if (mState != CONNECTED) { |
| 368 | reply->setInt32("result", -ENOTCONN); |
| 369 | reply->post(); |
| 370 | return; |
| 371 | } |
| 372 | |
| 373 | AString request; |
| 374 | CHECK(msg->findString("request", &request)); |
| 375 | |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 376 | // Just in case we need to re-issue the request with proper authentication |
| 377 | // later, stash it away. |
| 378 | reply->setString("original-request", request.c_str(), request.size()); |
| 379 | |
| 380 | addAuthentication(&request); |
| 381 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 382 | // Find the boundary between headers and the body. |
| 383 | ssize_t i = request.find("\r\n\r\n"); |
| 384 | CHECK_GE(i, 0); |
| 385 | |
| 386 | int32_t cseq = mNextCSeq++; |
| 387 | |
| 388 | AString cseqHeader = "CSeq: "; |
| 389 | cseqHeader.append(cseq); |
| 390 | cseqHeader.append("\r\n"); |
| 391 | |
| 392 | request.insert(cseqHeader, i + 2); |
| 393 | |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 394 | LOGV("request: '%s'", request.c_str()); |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 395 | |
| 396 | size_t numBytesSent = 0; |
| 397 | while (numBytesSent < request.size()) { |
| 398 | ssize_t n = |
| 399 | send(mSocket, request.c_str() + numBytesSent, |
| 400 | request.size() - numBytesSent, 0); |
| 401 | |
| 402 | if (n == 0) { |
| 403 | // Server closed the connection. |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 404 | LOGE("Server unexpectedly closed the connection."); |
Andreas Huber | f3d2bdf | 2010-09-15 11:18:13 -0700 | [diff] [blame] | 405 | |
| 406 | reply->setInt32("result", ERROR_IO); |
| 407 | reply->post(); |
| 408 | return; |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 409 | } else if (n < 0) { |
| 410 | if (errno == EINTR) { |
| 411 | continue; |
| 412 | } |
| 413 | |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 414 | LOGE("Error sending rtsp request."); |
Andreas Huber | f3d2bdf | 2010-09-15 11:18:13 -0700 | [diff] [blame] | 415 | reply->setInt32("result", -errno); |
| 416 | reply->post(); |
| 417 | return; |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 418 | } |
| 419 | |
| 420 | numBytesSent += (size_t)n; |
| 421 | } |
| 422 | |
| 423 | mPendingRequests.add(cseq, reply); |
| 424 | } |
| 425 | |
| 426 | void ARTSPConnection::onReceiveResponse() { |
| 427 | mReceiveResponseEventPending = false; |
| 428 | |
| 429 | if (mState != CONNECTED) { |
| 430 | return; |
| 431 | } |
| 432 | |
| 433 | struct timeval tv; |
| 434 | tv.tv_sec = 0; |
| 435 | tv.tv_usec = kSelectTimeoutUs; |
| 436 | |
| 437 | fd_set rs; |
| 438 | FD_ZERO(&rs); |
| 439 | FD_SET(mSocket, &rs); |
| 440 | |
| 441 | int res = select(mSocket + 1, &rs, NULL, NULL, &tv); |
| 442 | CHECK_GE(res, 0); |
| 443 | |
| 444 | if (res == 1) { |
Andreas Huber | af063a6 | 2010-08-18 10:17:18 -0700 | [diff] [blame] | 445 | MakeSocketBlocking(mSocket, true); |
| 446 | |
| 447 | bool success = receiveRTSPReponse(); |
| 448 | |
| 449 | MakeSocketBlocking(mSocket, false); |
| 450 | |
| 451 | if (!success) { |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 452 | // Something horrible, irreparable has happened. |
| 453 | flushPendingRequests(); |
| 454 | return; |
| 455 | } |
| 456 | } |
| 457 | |
| 458 | postReceiveReponseEvent(); |
| 459 | } |
| 460 | |
| 461 | void ARTSPConnection::flushPendingRequests() { |
| 462 | for (size_t i = 0; i < mPendingRequests.size(); ++i) { |
| 463 | sp<AMessage> reply = mPendingRequests.valueAt(i); |
| 464 | |
| 465 | reply->setInt32("result", -ECONNABORTED); |
| 466 | reply->post(); |
| 467 | } |
| 468 | |
| 469 | mPendingRequests.clear(); |
| 470 | } |
| 471 | |
| 472 | void ARTSPConnection::postReceiveReponseEvent() { |
| 473 | if (mReceiveResponseEventPending) { |
| 474 | return; |
| 475 | } |
| 476 | |
| 477 | sp<AMessage> msg = new AMessage(kWhatReceiveResponse, id()); |
| 478 | msg->post(); |
| 479 | |
| 480 | mReceiveResponseEventPending = true; |
| 481 | } |
| 482 | |
Andreas Huber | 0416da7 | 2010-08-26 11:17:32 -0700 | [diff] [blame] | 483 | status_t ARTSPConnection::receive(void *data, size_t size) { |
| 484 | size_t offset = 0; |
| 485 | while (offset < size) { |
| 486 | ssize_t n = recv(mSocket, (uint8_t *)data + offset, size - offset, 0); |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 487 | if (n == 0) { |
| 488 | // Server closed the connection. |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 489 | LOGE("Server unexpectedly closed the connection."); |
Andreas Huber | 0416da7 | 2010-08-26 11:17:32 -0700 | [diff] [blame] | 490 | return ERROR_IO; |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 491 | } else if (n < 0) { |
| 492 | if (errno == EINTR) { |
| 493 | continue; |
| 494 | } |
| 495 | |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 496 | LOGE("Error reading rtsp response."); |
Andreas Huber | f3d2bdf | 2010-09-15 11:18:13 -0700 | [diff] [blame] | 497 | return -errno; |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 498 | } |
| 499 | |
Andreas Huber | 0416da7 | 2010-08-26 11:17:32 -0700 | [diff] [blame] | 500 | offset += (size_t)n; |
| 501 | } |
| 502 | |
| 503 | return OK; |
| 504 | } |
| 505 | |
| 506 | bool ARTSPConnection::receiveLine(AString *line) { |
| 507 | line->clear(); |
| 508 | |
| 509 | bool sawCR = false; |
| 510 | for (;;) { |
| 511 | char c; |
| 512 | if (receive(&c, 1) != OK) { |
| 513 | return false; |
| 514 | } |
| 515 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 516 | if (sawCR && c == '\n') { |
| 517 | line->erase(line->size() - 1, 1); |
| 518 | return true; |
| 519 | } |
| 520 | |
| 521 | line->append(&c, 1); |
| 522 | |
Andreas Huber | 0416da7 | 2010-08-26 11:17:32 -0700 | [diff] [blame] | 523 | if (c == '$' && line->size() == 1) { |
| 524 | // Special-case for interleaved binary data. |
| 525 | return true; |
| 526 | } |
| 527 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 528 | sawCR = (c == '\r'); |
| 529 | } |
| 530 | } |
| 531 | |
Andreas Huber | 0416da7 | 2010-08-26 11:17:32 -0700 | [diff] [blame] | 532 | sp<ABuffer> ARTSPConnection::receiveBinaryData() { |
| 533 | uint8_t x[3]; |
| 534 | if (receive(x, 3) != OK) { |
| 535 | return NULL; |
| 536 | } |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 537 | |
Andreas Huber | 0416da7 | 2010-08-26 11:17:32 -0700 | [diff] [blame] | 538 | sp<ABuffer> buffer = new ABuffer((x[1] << 8) | x[2]); |
| 539 | if (receive(buffer->data(), buffer->size()) != OK) { |
| 540 | return NULL; |
| 541 | } |
| 542 | |
| 543 | buffer->meta()->setInt32("index", (int32_t)x[0]); |
| 544 | |
| 545 | return buffer; |
| 546 | } |
| 547 | |
Andreas Huber | e066616 | 2011-02-16 13:20:02 -0800 | [diff] [blame] | 548 | static bool IsRTSPVersion(const AString &s) { |
| 549 | return s == "RTSP/1.0"; |
| 550 | } |
| 551 | |
Andreas Huber | 0416da7 | 2010-08-26 11:17:32 -0700 | [diff] [blame] | 552 | bool ARTSPConnection::receiveRTSPReponse() { |
| 553 | AString statusLine; |
| 554 | |
| 555 | if (!receiveLine(&statusLine)) { |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 556 | return false; |
| 557 | } |
| 558 | |
Andreas Huber | 0416da7 | 2010-08-26 11:17:32 -0700 | [diff] [blame] | 559 | if (statusLine == "$") { |
| 560 | sp<ABuffer> buffer = receiveBinaryData(); |
| 561 | |
| 562 | if (buffer == NULL) { |
| 563 | return false; |
| 564 | } |
| 565 | |
| 566 | if (mObserveBinaryMessage != NULL) { |
| 567 | sp<AMessage> notify = mObserveBinaryMessage->dup(); |
| 568 | notify->setObject("buffer", buffer); |
| 569 | notify->post(); |
| 570 | } else { |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 571 | LOGW("received binary data, but no one cares."); |
Andreas Huber | 0416da7 | 2010-08-26 11:17:32 -0700 | [diff] [blame] | 572 | } |
| 573 | |
| 574 | return true; |
| 575 | } |
| 576 | |
| 577 | sp<ARTSPResponse> response = new ARTSPResponse; |
| 578 | response->mStatusLine = statusLine; |
| 579 | |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 580 | LOGI("status: %s", response->mStatusLine.c_str()); |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 581 | |
| 582 | ssize_t space1 = response->mStatusLine.find(" "); |
| 583 | if (space1 < 0) { |
| 584 | return false; |
| 585 | } |
| 586 | ssize_t space2 = response->mStatusLine.find(" ", space1 + 1); |
| 587 | if (space2 < 0) { |
| 588 | return false; |
| 589 | } |
| 590 | |
Andreas Huber | e066616 | 2011-02-16 13:20:02 -0800 | [diff] [blame] | 591 | bool isRequest = false; |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 592 | |
Andreas Huber | e066616 | 2011-02-16 13:20:02 -0800 | [diff] [blame] | 593 | if (!IsRTSPVersion(AString(response->mStatusLine, 0, space1))) { |
| 594 | CHECK(IsRTSPVersion( |
| 595 | AString( |
| 596 | response->mStatusLine, |
| 597 | space2 + 1, |
| 598 | response->mStatusLine.size() - space2 - 1))); |
| 599 | |
| 600 | isRequest = true; |
| 601 | |
| 602 | response->mStatusCode = 0; |
| 603 | } else { |
| 604 | AString statusCodeStr( |
| 605 | response->mStatusLine, space1 + 1, space2 - space1 - 1); |
| 606 | |
| 607 | if (!ParseSingleUnsignedLong( |
| 608 | statusCodeStr.c_str(), &response->mStatusCode) |
| 609 | || response->mStatusCode < 100 || response->mStatusCode > 999) { |
| 610 | return false; |
| 611 | } |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 612 | } |
| 613 | |
| 614 | AString line; |
| 615 | for (;;) { |
| 616 | if (!receiveLine(&line)) { |
| 617 | break; |
| 618 | } |
| 619 | |
| 620 | if (line.empty()) { |
| 621 | break; |
| 622 | } |
| 623 | |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 624 | LOGV("line: %s", line.c_str()); |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 625 | |
| 626 | ssize_t colonPos = line.find(":"); |
| 627 | if (colonPos < 0) { |
| 628 | // Malformed header line. |
| 629 | return false; |
| 630 | } |
| 631 | |
| 632 | AString key(line, 0, colonPos); |
| 633 | key.trim(); |
| 634 | key.tolower(); |
| 635 | |
| 636 | line.erase(0, colonPos + 1); |
| 637 | line.trim(); |
| 638 | |
| 639 | response->mHeaders.add(key, line); |
| 640 | } |
| 641 | |
| 642 | unsigned long contentLength = 0; |
| 643 | |
| 644 | ssize_t i = response->mHeaders.indexOfKey("content-length"); |
| 645 | |
| 646 | if (i >= 0) { |
| 647 | AString value = response->mHeaders.valueAt(i); |
| 648 | if (!ParseSingleUnsignedLong(value.c_str(), &contentLength)) { |
| 649 | return false; |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | if (contentLength > 0) { |
| 654 | response->mContent = new ABuffer(contentLength); |
| 655 | |
| 656 | size_t numBytesRead = 0; |
| 657 | while (numBytesRead < contentLength) { |
| 658 | ssize_t n = recv( |
| 659 | mSocket, response->mContent->data() + numBytesRead, |
| 660 | contentLength - numBytesRead, 0); |
| 661 | |
| 662 | if (n == 0) { |
| 663 | // Server closed the connection. |
| 664 | TRESPASS(); |
| 665 | } else if (n < 0) { |
| 666 | if (errno == EINTR) { |
| 667 | continue; |
| 668 | } |
| 669 | |
| 670 | TRESPASS(); |
| 671 | } |
| 672 | |
| 673 | numBytesRead += (size_t)n; |
| 674 | } |
| 675 | } |
| 676 | |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 677 | if (response->mStatusCode == 401) { |
| 678 | if (mAuthType == NONE && mUser.size() > 0 |
| 679 | && parseAuthMethod(response)) { |
| 680 | ssize_t i; |
| 681 | CHECK_EQ((status_t)OK, findPendingRequest(response, &i)); |
| 682 | CHECK_GE(i, 0); |
| 683 | |
| 684 | sp<AMessage> reply = mPendingRequests.valueAt(i); |
| 685 | mPendingRequests.removeItemsAt(i); |
| 686 | |
| 687 | AString request; |
| 688 | CHECK(reply->findString("original-request", &request)); |
| 689 | |
| 690 | sp<AMessage> msg = new AMessage(kWhatSendRequest, id()); |
| 691 | msg->setMessage("reply", reply); |
| 692 | msg->setString("request", request.c_str(), request.size()); |
| 693 | |
| 694 | LOGI("re-sending request with authentication headers..."); |
| 695 | onSendRequest(msg); |
| 696 | |
| 697 | return true; |
| 698 | } |
| 699 | } |
| 700 | |
Andreas Huber | e066616 | 2011-02-16 13:20:02 -0800 | [diff] [blame] | 701 | return isRequest |
| 702 | ? handleServerRequest(response) |
| 703 | : notifyResponseListener(response); |
| 704 | } |
| 705 | |
| 706 | bool ARTSPConnection::handleServerRequest(const sp<ARTSPResponse> &request) { |
| 707 | // Implementation of server->client requests is optional for all methods |
| 708 | // but we do need to respond, even if it's just to say that we don't |
| 709 | // support the method. |
| 710 | |
| 711 | ssize_t space1 = request->mStatusLine.find(" "); |
| 712 | CHECK_GE(space1, 0); |
| 713 | |
| 714 | AString response; |
| 715 | response.append("RTSP/1.0 501 Not Implemented\r\n"); |
| 716 | |
| 717 | ssize_t i = request->mHeaders.indexOfKey("cseq"); |
| 718 | |
| 719 | if (i >= 0) { |
| 720 | AString value = request->mHeaders.valueAt(i); |
| 721 | |
| 722 | unsigned long cseq; |
| 723 | if (!ParseSingleUnsignedLong(value.c_str(), &cseq)) { |
| 724 | return false; |
| 725 | } |
| 726 | |
| 727 | response.append("CSeq: "); |
| 728 | response.append(cseq); |
| 729 | response.append("\r\n"); |
| 730 | } |
| 731 | |
| 732 | response.append("\r\n"); |
| 733 | |
| 734 | size_t numBytesSent = 0; |
| 735 | while (numBytesSent < response.size()) { |
| 736 | ssize_t n = |
| 737 | send(mSocket, response.c_str() + numBytesSent, |
| 738 | response.size() - numBytesSent, 0); |
| 739 | |
| 740 | if (n == 0) { |
| 741 | // Server closed the connection. |
| 742 | LOGE("Server unexpectedly closed the connection."); |
| 743 | |
| 744 | return false; |
| 745 | } else if (n < 0) { |
| 746 | if (errno == EINTR) { |
| 747 | continue; |
| 748 | } |
| 749 | |
| 750 | LOGE("Error sending rtsp response."); |
| 751 | return false; |
| 752 | } |
| 753 | |
| 754 | numBytesSent += (size_t)n; |
| 755 | } |
| 756 | |
| 757 | return true; |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 758 | } |
| 759 | |
| 760 | // static |
| 761 | bool ARTSPConnection::ParseSingleUnsignedLong( |
| 762 | const char *from, unsigned long *x) { |
| 763 | char *end; |
| 764 | *x = strtoul(from, &end, 10); |
| 765 | |
| 766 | if (end == from || *end != '\0') { |
| 767 | return false; |
| 768 | } |
| 769 | |
| 770 | return true; |
| 771 | } |
| 772 | |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 773 | status_t ARTSPConnection::findPendingRequest( |
| 774 | const sp<ARTSPResponse> &response, ssize_t *index) const { |
| 775 | *index = 0; |
| 776 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 777 | ssize_t i = response->mHeaders.indexOfKey("cseq"); |
| 778 | |
| 779 | if (i < 0) { |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 780 | // This is an unsolicited server->client message. |
| 781 | return OK; |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 782 | } |
| 783 | |
| 784 | AString value = response->mHeaders.valueAt(i); |
| 785 | |
| 786 | unsigned long cseq; |
| 787 | if (!ParseSingleUnsignedLong(value.c_str(), &cseq)) { |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 788 | return ERROR_MALFORMED; |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 789 | } |
| 790 | |
| 791 | i = mPendingRequests.indexOfKey(cseq); |
| 792 | |
| 793 | if (i < 0) { |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 794 | return -ENOENT; |
| 795 | } |
| 796 | |
| 797 | *index = i; |
| 798 | |
| 799 | return OK; |
| 800 | } |
| 801 | |
| 802 | bool ARTSPConnection::notifyResponseListener( |
| 803 | const sp<ARTSPResponse> &response) { |
| 804 | ssize_t i; |
| 805 | status_t err = findPendingRequest(response, &i); |
| 806 | |
| 807 | if (err == OK && i < 0) { |
| 808 | // An unsolicited server response is not a problem. |
| 809 | return true; |
| 810 | } |
| 811 | |
| 812 | if (err != OK) { |
| 813 | return false; |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 814 | } |
| 815 | |
| 816 | sp<AMessage> reply = mPendingRequests.valueAt(i); |
| 817 | mPendingRequests.removeItemsAt(i); |
| 818 | |
| 819 | reply->setInt32("result", OK); |
| 820 | reply->setObject("response", response); |
| 821 | reply->post(); |
| 822 | |
| 823 | return true; |
| 824 | } |
| 825 | |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 826 | bool ARTSPConnection::parseAuthMethod(const sp<ARTSPResponse> &response) { |
| 827 | ssize_t i = response->mHeaders.indexOfKey("www-authenticate"); |
| 828 | |
| 829 | if (i < 0) { |
| 830 | return false; |
| 831 | } |
| 832 | |
| 833 | AString value = response->mHeaders.valueAt(i); |
| 834 | |
| 835 | if (!strncmp(value.c_str(), "Basic", 5)) { |
| 836 | mAuthType = BASIC; |
| 837 | } else { |
Andreas Huber | cf74754 | 2010-10-25 09:40:52 -0700 | [diff] [blame] | 838 | #if !defined(HAVE_ANDROID_OS) |
| 839 | // We don't have access to the MD5 implementation on the simulator, |
| 840 | // so we won't support digest authentication. |
| 841 | return false; |
| 842 | #endif |
| 843 | |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 844 | CHECK(!strncmp(value.c_str(), "Digest", 6)); |
| 845 | mAuthType = DIGEST; |
| 846 | |
| 847 | i = value.find("nonce="); |
| 848 | CHECK_GE(i, 0); |
| 849 | CHECK_EQ(value.c_str()[i + 6], '\"'); |
| 850 | ssize_t j = value.find("\"", i + 7); |
| 851 | CHECK_GE(j, 0); |
| 852 | |
| 853 | mNonce.setTo(value, i + 7, j - i - 7); |
| 854 | } |
| 855 | |
| 856 | return true; |
| 857 | } |
| 858 | |
Andreas Huber | cf74754 | 2010-10-25 09:40:52 -0700 | [diff] [blame] | 859 | #if defined(HAVE_ANDROID_OS) |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 860 | static void H(const AString &s, AString *out) { |
| 861 | out->clear(); |
| 862 | |
| 863 | MD5_CTX m; |
| 864 | MD5_Init(&m); |
| 865 | MD5_Update(&m, s.c_str(), s.size()); |
| 866 | |
| 867 | uint8_t key[16]; |
| 868 | MD5_Final(key, &m); |
| 869 | |
| 870 | for (size_t i = 0; i < 16; ++i) { |
| 871 | char nibble = key[i] >> 4; |
| 872 | if (nibble <= 9) { |
| 873 | nibble += '0'; |
| 874 | } else { |
| 875 | nibble += 'a' - 10; |
| 876 | } |
| 877 | out->append(&nibble, 1); |
| 878 | |
| 879 | nibble = key[i] & 0x0f; |
| 880 | if (nibble <= 9) { |
| 881 | nibble += '0'; |
| 882 | } else { |
| 883 | nibble += 'a' - 10; |
| 884 | } |
| 885 | out->append(&nibble, 1); |
| 886 | } |
| 887 | } |
Andreas Huber | cf74754 | 2010-10-25 09:40:52 -0700 | [diff] [blame] | 888 | #endif |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 889 | |
| 890 | static void GetMethodAndURL( |
| 891 | const AString &request, AString *method, AString *url) { |
| 892 | ssize_t space1 = request.find(" "); |
| 893 | CHECK_GE(space1, 0); |
| 894 | |
| 895 | ssize_t space2 = request.find(" ", space1 + 1); |
| 896 | CHECK_GE(space2, 0); |
| 897 | |
| 898 | method->setTo(request, 0, space1); |
| 899 | url->setTo(request, space1 + 1, space2 - space1); |
| 900 | } |
| 901 | |
| 902 | void ARTSPConnection::addAuthentication(AString *request) { |
| 903 | if (mAuthType == NONE) { |
| 904 | return; |
| 905 | } |
| 906 | |
| 907 | // Find the boundary between headers and the body. |
| 908 | ssize_t i = request->find("\r\n\r\n"); |
| 909 | CHECK_GE(i, 0); |
| 910 | |
| 911 | if (mAuthType == BASIC) { |
| 912 | AString tmp; |
| 913 | tmp.append(mUser); |
| 914 | tmp.append(":"); |
| 915 | tmp.append(mPass); |
| 916 | |
| 917 | AString out; |
| 918 | encodeBase64(tmp.c_str(), tmp.size(), &out); |
| 919 | |
| 920 | AString fragment; |
| 921 | fragment.append("Authorization: Basic "); |
| 922 | fragment.append(out); |
| 923 | fragment.append("\r\n"); |
| 924 | |
| 925 | request->insert(fragment, i + 2); |
| 926 | |
| 927 | return; |
| 928 | } |
| 929 | |
Andreas Huber | cf74754 | 2010-10-25 09:40:52 -0700 | [diff] [blame] | 930 | #if defined(HAVE_ANDROID_OS) |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 931 | CHECK_EQ((int)mAuthType, (int)DIGEST); |
| 932 | |
| 933 | AString method, url; |
| 934 | GetMethodAndURL(*request, &method, &url); |
| 935 | |
| 936 | AString A1; |
| 937 | A1.append(mUser); |
| 938 | A1.append(":"); |
| 939 | A1.append("Streaming Server"); |
| 940 | A1.append(":"); |
| 941 | A1.append(mPass); |
| 942 | |
| 943 | AString A2; |
| 944 | A2.append(method); |
| 945 | A2.append(":"); |
| 946 | A2.append(url); |
| 947 | |
| 948 | AString HA1, HA2; |
| 949 | H(A1, &HA1); |
| 950 | H(A2, &HA2); |
| 951 | |
| 952 | AString tmp; |
| 953 | tmp.append(HA1); |
| 954 | tmp.append(":"); |
| 955 | tmp.append(mNonce); |
| 956 | tmp.append(":"); |
| 957 | tmp.append(HA2); |
| 958 | |
| 959 | AString digest; |
| 960 | H(tmp, &digest); |
| 961 | |
| 962 | AString fragment; |
| 963 | fragment.append("Authorization: Digest "); |
| 964 | fragment.append("nonce=\""); |
| 965 | fragment.append(mNonce); |
| 966 | fragment.append("\", "); |
| 967 | fragment.append("username=\""); |
| 968 | fragment.append(mUser); |
| 969 | fragment.append("\", "); |
| 970 | fragment.append("uri=\""); |
| 971 | fragment.append(url); |
| 972 | fragment.append("\", "); |
| 973 | fragment.append("response=\""); |
| 974 | fragment.append(digest); |
| 975 | fragment.append("\""); |
| 976 | fragment.append("\r\n"); |
| 977 | |
| 978 | request->insert(fragment, i + 2); |
Andreas Huber | cf74754 | 2010-10-25 09:40:52 -0700 | [diff] [blame] | 979 | #endif |
Andreas Huber | a0b442e | 2010-10-20 15:00:34 -0700 | [diff] [blame] | 980 | } |
| 981 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 982 | } // namespace android |