Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 1 | /*************************************************************************** |
| 2 | * _ _ ____ _ |
| 3 | * Project ___| | | | _ \| | |
| 4 | * / __| | | | |_) | | |
| 5 | * | (__| |_| | _ <| |___ |
| 6 | * \___|\___/|_| \_\_____| |
| 7 | * |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 8 | * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al. |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 9 | * |
| 10 | * This software is licensed as described in the file COPYING, which |
| 11 | * you should have received as part of this distribution. The terms |
Alex Deymo | d15eaac | 2016-06-28 14:49:26 -0700 | [diff] [blame] | 12 | * are also available at https://curl.haxx.se/docs/copyright.html. |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 13 | * |
| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell |
| 15 | * copies of the Software, and permit persons to whom the Software is |
| 16 | * furnished to do so, under the terms of the COPYING file. |
| 17 | * |
| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| 19 | * KIND, either express or implied. |
| 20 | * |
| 21 | ***************************************************************************/ |
| 22 | |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 23 | #include "curl_setup.h" |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 24 | |
| 25 | #ifndef CURL_DISABLE_RTSP |
| 26 | |
| 27 | #include "urldata.h" |
| 28 | #include <curl/curl.h> |
| 29 | #include "transfer.h" |
| 30 | #include "sendf.h" |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 31 | #include "multiif.h" |
| 32 | #include "http.h" |
| 33 | #include "url.h" |
| 34 | #include "progress.h" |
| 35 | #include "rtsp.h" |
Elliott Hughes | cee0338 | 2017-06-23 12:17:18 -0700 | [diff] [blame] | 36 | #include "strcase.h" |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 37 | #include "select.h" |
| 38 | #include "connect.h" |
Elliott Hughes | cee0338 | 2017-06-23 12:17:18 -0700 | [diff] [blame] | 39 | #include "strdup.h" |
Alex Deymo | d15eaac | 2016-06-28 14:49:26 -0700 | [diff] [blame] | 40 | /* The last 3 #include files should be in this order */ |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 41 | #include "curl_printf.h" |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 42 | #include "curl_memory.h" |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 43 | #include "memdebug.h" |
| 44 | |
| 45 | /* |
| 46 | * TODO (general) |
| 47 | * -incoming server requests |
| 48 | * -server CSeq counter |
| 49 | * -digest authentication |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 50 | * -connect through proxy |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 51 | * -pipelining? |
| 52 | */ |
| 53 | |
| 54 | |
| 55 | #define RTP_PKT_CHANNEL(p) ((int)((unsigned char)((p)[1]))) |
| 56 | |
| 57 | #define RTP_PKT_LENGTH(p) ((((int)((unsigned char)((p)[2]))) << 8) | \ |
| 58 | ((int)((unsigned char)((p)[3])))) |
| 59 | |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 60 | /* protocol-specific functions set up to be called by the main engine */ |
| 61 | static CURLcode rtsp_do(struct connectdata *conn, bool *done); |
| 62 | static CURLcode rtsp_done(struct connectdata *conn, CURLcode, bool premature); |
| 63 | static CURLcode rtsp_connect(struct connectdata *conn, bool *done); |
| 64 | static CURLcode rtsp_disconnect(struct connectdata *conn, bool dead); |
| 65 | |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 66 | static int rtsp_getsock_do(struct connectdata *conn, |
| 67 | curl_socket_t *socks, |
| 68 | int numsocks); |
| 69 | |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 70 | /* |
| 71 | * Parse and write out any available RTP data. |
| 72 | * |
| 73 | * nread: amount of data left after k->str. will be modified if RTP |
| 74 | * data is parsed and k->str is moved up |
| 75 | * readmore: whether or not the RTP parser needs more data right away |
| 76 | */ |
Alex Deymo | e3149cc | 2016-10-05 11:18:42 -0700 | [diff] [blame] | 77 | static CURLcode rtsp_rtp_readwrite(struct Curl_easy *data, |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 78 | struct connectdata *conn, |
| 79 | ssize_t *nread, |
| 80 | bool *readmore); |
| 81 | |
| 82 | static CURLcode rtsp_setup_connection(struct connectdata *conn); |
| 83 | |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 84 | bool rtsp_connisdead(struct connectdata *check); |
| 85 | static unsigned int rtsp_conncheck(struct connectdata *check, |
| 86 | unsigned int checks_to_perform); |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 87 | |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 88 | /* this returns the socket to wait for in the DO and DOING state for the multi |
| 89 | interface and then we're always _sending_ a request and thus we wait for |
| 90 | the single socket to become writable only */ |
| 91 | static int rtsp_getsock_do(struct connectdata *conn, |
| 92 | curl_socket_t *socks, |
| 93 | int numsocks) |
| 94 | { |
| 95 | /* write mode */ |
| 96 | (void)numsocks; /* unused, we trust it to be at least 1 */ |
| 97 | socks[0] = conn->sock[FIRSTSOCKET]; |
| 98 | return GETSOCK_WRITESOCK(0); |
| 99 | } |
| 100 | |
| 101 | static |
| 102 | CURLcode rtp_client_write(struct connectdata *conn, char *ptr, size_t len); |
| 103 | |
| 104 | |
| 105 | /* |
| 106 | * RTSP handler interface. |
| 107 | */ |
| 108 | const struct Curl_handler Curl_handler_rtsp = { |
| 109 | "RTSP", /* scheme */ |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 110 | rtsp_setup_connection, /* setup_connection */ |
| 111 | rtsp_do, /* do_it */ |
| 112 | rtsp_done, /* done */ |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 113 | ZERO_NULL, /* do_more */ |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 114 | rtsp_connect, /* connect_it */ |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 115 | ZERO_NULL, /* connecting */ |
| 116 | ZERO_NULL, /* doing */ |
| 117 | ZERO_NULL, /* proto_getsock */ |
| 118 | rtsp_getsock_do, /* doing_getsock */ |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 119 | ZERO_NULL, /* domore_getsock */ |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 120 | ZERO_NULL, /* perform_getsock */ |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 121 | rtsp_disconnect, /* disconnect */ |
| 122 | rtsp_rtp_readwrite, /* readwrite */ |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 123 | rtsp_conncheck, /* connection_check */ |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 124 | PORT_RTSP, /* defport */ |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 125 | CURLPROTO_RTSP, /* protocol */ |
| 126 | PROTOPT_NONE /* flags */ |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 127 | }; |
| 128 | |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 129 | |
| 130 | static CURLcode rtsp_setup_connection(struct connectdata *conn) |
| 131 | { |
| 132 | struct RTSP *rtsp; |
| 133 | |
| 134 | conn->data->req.protop = rtsp = calloc(1, sizeof(struct RTSP)); |
| 135 | if(!rtsp) |
| 136 | return CURLE_OUT_OF_MEMORY; |
| 137 | |
| 138 | return CURLE_OK; |
| 139 | } |
| 140 | |
| 141 | |
| 142 | /* |
| 143 | * The server may send us RTP data at any point, and RTSPREQ_RECEIVE does not |
| 144 | * want to block the application forever while receiving a stream. Therefore, |
| 145 | * we cannot assume that an RTSP socket is dead just because it is readable. |
| 146 | * |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 147 | * Instead, if it is readable, run Curl_connalive() to peek at the socket |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 148 | * and distinguish between closed and data. |
| 149 | */ |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 150 | bool rtsp_connisdead(struct connectdata *check) |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 151 | { |
| 152 | int sval; |
| 153 | bool ret_val = TRUE; |
| 154 | |
Elliott Hughes | cee0338 | 2017-06-23 12:17:18 -0700 | [diff] [blame] | 155 | sval = SOCKET_READABLE(check->sock[FIRSTSOCKET], 0); |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 156 | if(sval == 0) { |
| 157 | /* timeout */ |
| 158 | ret_val = FALSE; |
| 159 | } |
| 160 | else if(sval & CURL_CSELECT_ERR) { |
| 161 | /* socket is in an error state */ |
| 162 | ret_val = TRUE; |
| 163 | } |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 164 | else if(sval & CURL_CSELECT_IN) { |
| 165 | /* readable with no error. could still be closed */ |
| 166 | ret_val = !Curl_connalive(check); |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | return ret_val; |
| 170 | } |
| 171 | |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 172 | /* |
| 173 | * Function to check on various aspects of a connection. |
| 174 | */ |
| 175 | static unsigned int rtsp_conncheck(struct connectdata *check, |
| 176 | unsigned int checks_to_perform) |
| 177 | { |
| 178 | unsigned int ret_val = CONNRESULT_NONE; |
| 179 | |
| 180 | if(checks_to_perform & CONNCHECK_ISDEAD) { |
| 181 | if(rtsp_connisdead(check)) |
| 182 | ret_val |= CONNRESULT_DEAD; |
| 183 | } |
| 184 | |
| 185 | return ret_val; |
| 186 | } |
| 187 | |
| 188 | |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 189 | static CURLcode rtsp_connect(struct connectdata *conn, bool *done) |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 190 | { |
| 191 | CURLcode httpStatus; |
Alex Deymo | e3149cc | 2016-10-05 11:18:42 -0700 | [diff] [blame] | 192 | struct Curl_easy *data = conn->data; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 193 | |
| 194 | httpStatus = Curl_http_connect(conn, done); |
| 195 | |
| 196 | /* Initialize the CSeq if not already done */ |
| 197 | if(data->state.rtsp_next_client_CSeq == 0) |
| 198 | data->state.rtsp_next_client_CSeq = 1; |
| 199 | if(data->state.rtsp_next_server_CSeq == 0) |
| 200 | data->state.rtsp_next_server_CSeq = 1; |
| 201 | |
| 202 | conn->proto.rtspc.rtp_channel = -1; |
| 203 | |
| 204 | return httpStatus; |
| 205 | } |
| 206 | |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 207 | static CURLcode rtsp_disconnect(struct connectdata *conn, bool dead) |
| 208 | { |
| 209 | (void) dead; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 210 | Curl_safefree(conn->proto.rtspc.rtp_buf); |
| 211 | return CURLE_OK; |
| 212 | } |
| 213 | |
| 214 | |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 215 | static CURLcode rtsp_done(struct connectdata *conn, |
| 216 | CURLcode status, bool premature) |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 217 | { |
Alex Deymo | e3149cc | 2016-10-05 11:18:42 -0700 | [diff] [blame] | 218 | struct Curl_easy *data = conn->data; |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 219 | struct RTSP *rtsp = data->req.protop; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 220 | CURLcode httpStatus; |
| 221 | long CSeq_sent; |
| 222 | long CSeq_recv; |
| 223 | |
| 224 | /* Bypass HTTP empty-reply checks on receive */ |
| 225 | if(data->set.rtspreq == RTSPREQ_RECEIVE) |
| 226 | premature = TRUE; |
| 227 | |
| 228 | httpStatus = Curl_http_done(conn, status, premature); |
| 229 | |
| 230 | if(rtsp) { |
| 231 | /* Check the sequence numbers */ |
| 232 | CSeq_sent = rtsp->CSeq_sent; |
| 233 | CSeq_recv = rtsp->CSeq_recv; |
| 234 | if((data->set.rtspreq != RTSPREQ_RECEIVE) && (CSeq_sent != CSeq_recv)) { |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 235 | failf(data, |
| 236 | "The CSeq of this request %ld did not match the response %ld", |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 237 | CSeq_sent, CSeq_recv); |
| 238 | return CURLE_RTSP_CSEQ_ERROR; |
| 239 | } |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 240 | if(data->set.rtspreq == RTSPREQ_RECEIVE && |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 241 | (conn->proto.rtspc.rtp_channel == -1)) { |
| 242 | infof(data, "Got an RTP Receive with a CSeq of %ld\n", CSeq_recv); |
| 243 | /* TODO CPC: Server -> Client logic here */ |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | return httpStatus; |
| 248 | } |
| 249 | |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 250 | static CURLcode rtsp_do(struct connectdata *conn, bool *done) |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 251 | { |
Alex Deymo | e3149cc | 2016-10-05 11:18:42 -0700 | [diff] [blame] | 252 | struct Curl_easy *data = conn->data; |
Alex Deymo | 486467e | 2017-12-19 19:04:07 +0100 | [diff] [blame] | 253 | CURLcode result = CURLE_OK; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 254 | Curl_RtspReq rtspreq = data->set.rtspreq; |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 255 | struct RTSP *rtsp = data->req.protop; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 256 | struct HTTP *http; |
| 257 | Curl_send_buffer *req_buffer; |
| 258 | curl_off_t postsize = 0; /* for ANNOUNCE and SET_PARAMETER */ |
| 259 | curl_off_t putsize = 0; /* for ANNOUNCE and SET_PARAMETER */ |
| 260 | |
| 261 | const char *p_request = NULL; |
| 262 | const char *p_session_id = NULL; |
| 263 | const char *p_accept = NULL; |
| 264 | const char *p_accept_encoding = NULL; |
| 265 | const char *p_range = NULL; |
| 266 | const char *p_referrer = NULL; |
| 267 | const char *p_stream_uri = NULL; |
| 268 | const char *p_transport = NULL; |
| 269 | const char *p_uagent = NULL; |
Alex Deymo | d15eaac | 2016-06-28 14:49:26 -0700 | [diff] [blame] | 270 | const char *p_proxyuserpwd = NULL; |
| 271 | const char *p_userpwd = NULL; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 272 | |
| 273 | *done = TRUE; |
| 274 | |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 275 | http = &(rtsp->http_wrapper); |
| 276 | /* Assert that no one has changed the RTSP struct in an evil way */ |
| 277 | DEBUGASSERT((void *)http == (void *)rtsp); |
| 278 | |
| 279 | rtsp->CSeq_sent = data->state.rtsp_next_client_CSeq; |
| 280 | rtsp->CSeq_recv = 0; |
| 281 | |
| 282 | /* Setup the 'p_request' pointer to the proper p_request string |
| 283 | * Since all RTSP requests are included here, there is no need to |
| 284 | * support custom requests like HTTP. |
| 285 | **/ |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 286 | data->set.opt_no_body = TRUE; /* most requests don't contain a body */ |
| 287 | switch(rtspreq) { |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 288 | default: |
| 289 | failf(data, "Got invalid RTSP request"); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 290 | return CURLE_BAD_FUNCTION_ARGUMENT; |
| 291 | case RTSPREQ_OPTIONS: |
| 292 | p_request = "OPTIONS"; |
| 293 | break; |
| 294 | case RTSPREQ_DESCRIBE: |
| 295 | p_request = "DESCRIBE"; |
| 296 | data->set.opt_no_body = FALSE; |
| 297 | break; |
| 298 | case RTSPREQ_ANNOUNCE: |
| 299 | p_request = "ANNOUNCE"; |
| 300 | break; |
| 301 | case RTSPREQ_SETUP: |
| 302 | p_request = "SETUP"; |
| 303 | break; |
| 304 | case RTSPREQ_PLAY: |
| 305 | p_request = "PLAY"; |
| 306 | break; |
| 307 | case RTSPREQ_PAUSE: |
| 308 | p_request = "PAUSE"; |
| 309 | break; |
| 310 | case RTSPREQ_TEARDOWN: |
| 311 | p_request = "TEARDOWN"; |
| 312 | break; |
| 313 | case RTSPREQ_GET_PARAMETER: |
| 314 | /* GET_PARAMETER's no_body status is determined later */ |
| 315 | p_request = "GET_PARAMETER"; |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 316 | data->set.opt_no_body = FALSE; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 317 | break; |
| 318 | case RTSPREQ_SET_PARAMETER: |
| 319 | p_request = "SET_PARAMETER"; |
| 320 | break; |
| 321 | case RTSPREQ_RECORD: |
| 322 | p_request = "RECORD"; |
| 323 | break; |
| 324 | case RTSPREQ_RECEIVE: |
| 325 | p_request = ""; |
| 326 | /* Treat interleaved RTP as body*/ |
| 327 | data->set.opt_no_body = FALSE; |
| 328 | break; |
| 329 | case RTSPREQ_LAST: |
| 330 | failf(data, "Got invalid RTSP request: RTSPREQ_LAST"); |
| 331 | return CURLE_BAD_FUNCTION_ARGUMENT; |
| 332 | } |
| 333 | |
| 334 | if(rtspreq == RTSPREQ_RECEIVE) { |
Lucas Eckels | 9bd90e6 | 2012-08-06 15:07:02 -0700 | [diff] [blame] | 335 | Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE, |
| 336 | &http->readbytecount, -1, NULL); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 337 | |
| 338 | return result; |
| 339 | } |
| 340 | |
| 341 | p_session_id = data->set.str[STRING_RTSP_SESSION_ID]; |
| 342 | if(!p_session_id && |
| 343 | (rtspreq & ~(RTSPREQ_OPTIONS | RTSPREQ_DESCRIBE | RTSPREQ_SETUP))) { |
| 344 | failf(data, "Refusing to issue an RTSP request [%s] without a session ID.", |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 345 | p_request); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 346 | return CURLE_BAD_FUNCTION_ARGUMENT; |
| 347 | } |
| 348 | |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 349 | /* TODO: proxy? */ |
| 350 | |
| 351 | /* Stream URI. Default to server '*' if not specified */ |
| 352 | if(data->set.str[STRING_RTSP_STREAM_URI]) { |
| 353 | p_stream_uri = data->set.str[STRING_RTSP_STREAM_URI]; |
| 354 | } |
| 355 | else { |
| 356 | p_stream_uri = "*"; |
| 357 | } |
| 358 | |
| 359 | /* Transport Header for SETUP requests */ |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 360 | p_transport = Curl_checkheaders(conn, "Transport"); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 361 | if(rtspreq == RTSPREQ_SETUP && !p_transport) { |
| 362 | /* New Transport: setting? */ |
| 363 | if(data->set.str[STRING_RTSP_TRANSPORT]) { |
| 364 | Curl_safefree(conn->allocptr.rtsp_transport); |
| 365 | |
| 366 | conn->allocptr.rtsp_transport = |
| 367 | aprintf("Transport: %s\r\n", |
| 368 | data->set.str[STRING_RTSP_TRANSPORT]); |
| 369 | if(!conn->allocptr.rtsp_transport) |
| 370 | return CURLE_OUT_OF_MEMORY; |
| 371 | } |
| 372 | else { |
| 373 | failf(data, |
| 374 | "Refusing to issue an RTSP SETUP without a Transport: header."); |
| 375 | return CURLE_BAD_FUNCTION_ARGUMENT; |
| 376 | } |
| 377 | |
| 378 | p_transport = conn->allocptr.rtsp_transport; |
| 379 | } |
| 380 | |
| 381 | /* Accept Headers for DESCRIBE requests */ |
| 382 | if(rtspreq == RTSPREQ_DESCRIBE) { |
| 383 | /* Accept Header */ |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 384 | p_accept = Curl_checkheaders(conn, "Accept")? |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 385 | NULL:"Accept: application/sdp\r\n"; |
| 386 | |
| 387 | /* Accept-Encoding header */ |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 388 | if(!Curl_checkheaders(conn, "Accept-Encoding") && |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 389 | data->set.str[STRING_ENCODING]) { |
| 390 | Curl_safefree(conn->allocptr.accept_encoding); |
| 391 | conn->allocptr.accept_encoding = |
| 392 | aprintf("Accept-Encoding: %s\r\n", data->set.str[STRING_ENCODING]); |
| 393 | |
| 394 | if(!conn->allocptr.accept_encoding) |
| 395 | return CURLE_OUT_OF_MEMORY; |
| 396 | |
| 397 | p_accept_encoding = conn->allocptr.accept_encoding; |
| 398 | } |
| 399 | } |
| 400 | |
| 401 | /* The User-Agent string might have been allocated in url.c already, because |
| 402 | it might have been used in the proxy connect, but if we have got a header |
| 403 | with the user-agent string specified, we erase the previously made string |
| 404 | here. */ |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 405 | if(Curl_checkheaders(conn, "User-Agent") && conn->allocptr.uagent) { |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 406 | Curl_safefree(conn->allocptr.uagent); |
| 407 | conn->allocptr.uagent = NULL; |
| 408 | } |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 409 | else if(!Curl_checkheaders(conn, "User-Agent") && |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 410 | data->set.str[STRING_USERAGENT]) { |
| 411 | p_uagent = conn->allocptr.uagent; |
| 412 | } |
| 413 | |
Alex Deymo | d15eaac | 2016-06-28 14:49:26 -0700 | [diff] [blame] | 414 | /* setup the authentication headers */ |
| 415 | result = Curl_http_output_auth(conn, p_request, p_stream_uri, FALSE); |
| 416 | if(result) |
| 417 | return result; |
| 418 | |
| 419 | p_proxyuserpwd = conn->allocptr.proxyuserpwd; |
| 420 | p_userpwd = conn->allocptr.userpwd; |
| 421 | |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 422 | /* Referrer */ |
| 423 | Curl_safefree(conn->allocptr.ref); |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 424 | if(data->change.referer && !Curl_checkheaders(conn, "Referer")) |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 425 | conn->allocptr.ref = aprintf("Referer: %s\r\n", data->change.referer); |
| 426 | else |
| 427 | conn->allocptr.ref = NULL; |
| 428 | |
| 429 | p_referrer = conn->allocptr.ref; |
| 430 | |
| 431 | /* |
| 432 | * Range Header |
| 433 | * Only applies to PLAY, PAUSE, RECORD |
| 434 | * |
| 435 | * Go ahead and use the Range stuff supplied for HTTP |
| 436 | */ |
| 437 | if(data->state.use_range && |
| 438 | (rtspreq & (RTSPREQ_PLAY | RTSPREQ_PAUSE | RTSPREQ_RECORD))) { |
| 439 | |
| 440 | /* Check to see if there is a range set in the custom headers */ |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 441 | if(!Curl_checkheaders(conn, "Range") && data->state.range) { |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 442 | Curl_safefree(conn->allocptr.rangeline); |
| 443 | conn->allocptr.rangeline = aprintf("Range: %s\r\n", data->state.range); |
| 444 | p_range = conn->allocptr.rangeline; |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | /* |
| 449 | * Sanity check the custom headers |
| 450 | */ |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 451 | if(Curl_checkheaders(conn, "CSeq")) { |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 452 | failf(data, "CSeq cannot be set as a custom header."); |
| 453 | return CURLE_RTSP_CSEQ_ERROR; |
| 454 | } |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 455 | if(Curl_checkheaders(conn, "Session")) { |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 456 | failf(data, "Session ID cannot be set as a custom header."); |
| 457 | return CURLE_BAD_FUNCTION_ARGUMENT; |
| 458 | } |
| 459 | |
| 460 | /* Initialize a dynamic send buffer */ |
| 461 | req_buffer = Curl_add_buffer_init(); |
| 462 | |
| 463 | if(!req_buffer) |
| 464 | return CURLE_OUT_OF_MEMORY; |
| 465 | |
| 466 | result = |
| 467 | Curl_add_bufferf(req_buffer, |
| 468 | "%s %s RTSP/1.0\r\n" /* Request Stream-URI RTSP/1.0 */ |
| 469 | "CSeq: %ld\r\n", /* CSeq */ |
Alex Deymo | d15eaac | 2016-06-28 14:49:26 -0700 | [diff] [blame] | 470 | p_request, p_stream_uri, rtsp->CSeq_sent); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 471 | if(result) |
| 472 | return result; |
| 473 | |
| 474 | /* |
| 475 | * Rather than do a normal alloc line, keep the session_id unformatted |
| 476 | * to make comparison easier |
| 477 | */ |
| 478 | if(p_session_id) { |
| 479 | result = Curl_add_bufferf(req_buffer, "Session: %s\r\n", p_session_id); |
| 480 | if(result) |
| 481 | return result; |
| 482 | } |
| 483 | |
| 484 | /* |
| 485 | * Shared HTTP-like options |
| 486 | */ |
| 487 | result = Curl_add_bufferf(req_buffer, |
| 488 | "%s" /* transport */ |
| 489 | "%s" /* accept */ |
| 490 | "%s" /* accept-encoding */ |
| 491 | "%s" /* range */ |
| 492 | "%s" /* referrer */ |
| 493 | "%s" /* user-agent */ |
Alex Deymo | d15eaac | 2016-06-28 14:49:26 -0700 | [diff] [blame] | 494 | "%s" /* proxyuserpwd */ |
| 495 | "%s" /* userpwd */ |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 496 | , |
| 497 | p_transport ? p_transport : "", |
| 498 | p_accept ? p_accept : "", |
| 499 | p_accept_encoding ? p_accept_encoding : "", |
| 500 | p_range ? p_range : "", |
| 501 | p_referrer ? p_referrer : "", |
Alex Deymo | d15eaac | 2016-06-28 14:49:26 -0700 | [diff] [blame] | 502 | p_uagent ? p_uagent : "", |
| 503 | p_proxyuserpwd ? p_proxyuserpwd : "", |
| 504 | p_userpwd ? p_userpwd : ""); |
| 505 | |
| 506 | /* |
| 507 | * Free userpwd now --- cannot reuse this for Negotiate and possibly NTLM |
| 508 | * with basic and digest, it will be freed anyway by the next request |
| 509 | */ |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 510 | Curl_safefree(conn->allocptr.userpwd); |
Alex Deymo | d15eaac | 2016-06-28 14:49:26 -0700 | [diff] [blame] | 511 | conn->allocptr.userpwd = NULL; |
| 512 | |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 513 | if(result) |
| 514 | return result; |
| 515 | |
| 516 | if((rtspreq == RTSPREQ_SETUP) || (rtspreq == RTSPREQ_DESCRIBE)) { |
| 517 | result = Curl_add_timecondition(data, req_buffer); |
| 518 | if(result) |
| 519 | return result; |
| 520 | } |
| 521 | |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 522 | result = Curl_add_custom_headers(conn, FALSE, req_buffer); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 523 | if(result) |
| 524 | return result; |
| 525 | |
| 526 | if(rtspreq == RTSPREQ_ANNOUNCE || |
| 527 | rtspreq == RTSPREQ_SET_PARAMETER || |
| 528 | rtspreq == RTSPREQ_GET_PARAMETER) { |
| 529 | |
| 530 | if(data->set.upload) { |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 531 | putsize = data->state.infilesize; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 532 | data->set.httpreq = HTTPREQ_PUT; |
| 533 | |
| 534 | } |
| 535 | else { |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 536 | postsize = (data->state.infilesize != -1)? |
| 537 | data->state.infilesize: |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 538 | (data->set.postfields? (curl_off_t)strlen(data->set.postfields):0); |
| 539 | data->set.httpreq = HTTPREQ_POST; |
| 540 | } |
| 541 | |
| 542 | if(putsize > 0 || postsize > 0) { |
| 543 | /* As stated in the http comments, it is probably not wise to |
| 544 | * actually set a custom Content-Length in the headers */ |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 545 | if(!Curl_checkheaders(conn, "Content-Length")) { |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 546 | result = Curl_add_bufferf(req_buffer, |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 547 | "Content-Length: %" CURL_FORMAT_CURL_OFF_T"\r\n", |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 548 | (data->set.upload ? putsize : postsize)); |
| 549 | if(result) |
| 550 | return result; |
| 551 | } |
| 552 | |
| 553 | if(rtspreq == RTSPREQ_SET_PARAMETER || |
| 554 | rtspreq == RTSPREQ_GET_PARAMETER) { |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 555 | if(!Curl_checkheaders(conn, "Content-Type")) { |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 556 | result = Curl_add_bufferf(req_buffer, |
| 557 | "Content-Type: text/parameters\r\n"); |
| 558 | if(result) |
| 559 | return result; |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | if(rtspreq == RTSPREQ_ANNOUNCE) { |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 564 | if(!Curl_checkheaders(conn, "Content-Type")) { |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 565 | result = Curl_add_bufferf(req_buffer, |
| 566 | "Content-Type: application/sdp\r\n"); |
| 567 | if(result) |
| 568 | return result; |
| 569 | } |
| 570 | } |
| 571 | |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 572 | data->state.expect100header = FALSE; /* RTSP posts are simple/small */ |
| 573 | } |
| 574 | else if(rtspreq == RTSPREQ_GET_PARAMETER) { |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 575 | /* Check for an empty GET_PARAMETER (heartbeat) request */ |
| 576 | data->set.httpreq = HTTPREQ_HEAD; |
| 577 | data->set.opt_no_body = TRUE; |
| 578 | } |
| 579 | } |
| 580 | |
| 581 | /* RTSP never allows chunked transfer */ |
| 582 | data->req.forbidchunk = TRUE; |
| 583 | /* Finish the request buffer */ |
| 584 | result = Curl_add_buffer(req_buffer, "\r\n", 2); |
| 585 | if(result) |
| 586 | return result; |
| 587 | |
| 588 | if(postsize > 0) { |
| 589 | result = Curl_add_buffer(req_buffer, data->set.postfields, |
| 590 | (size_t)postsize); |
| 591 | if(result) |
| 592 | return result; |
| 593 | } |
| 594 | |
| 595 | /* issue the request */ |
| 596 | result = Curl_add_buffer_send(req_buffer, conn, |
| 597 | &data->info.request_size, 0, FIRSTSOCKET); |
| 598 | if(result) { |
| 599 | failf(data, "Failed sending RTSP request"); |
| 600 | return result; |
| 601 | } |
| 602 | |
Lucas Eckels | 9bd90e6 | 2012-08-06 15:07:02 -0700 | [diff] [blame] | 603 | Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE, &http->readbytecount, |
| 604 | putsize?FIRSTSOCKET:-1, |
| 605 | putsize?&http->writebytecount:NULL); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 606 | |
| 607 | /* Increment the CSeq on success */ |
| 608 | data->state.rtsp_next_client_CSeq++; |
| 609 | |
| 610 | if(http->writebytecount) { |
| 611 | /* if a request-body has been sent off, we make sure this progress is |
| 612 | noted properly */ |
| 613 | Curl_pgrsSetUploadCounter(data, http->writebytecount); |
| 614 | if(Curl_pgrsUpdate(conn)) |
| 615 | result = CURLE_ABORTED_BY_CALLBACK; |
| 616 | } |
| 617 | |
| 618 | return result; |
| 619 | } |
| 620 | |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 621 | |
Alex Deymo | e3149cc | 2016-10-05 11:18:42 -0700 | [diff] [blame] | 622 | static CURLcode rtsp_rtp_readwrite(struct Curl_easy *data, |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 623 | struct connectdata *conn, |
| 624 | ssize_t *nread, |
| 625 | bool *readmore) { |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 626 | struct SingleRequest *k = &data->req; |
| 627 | struct rtsp_conn *rtspc = &(conn->proto.rtspc); |
| 628 | |
| 629 | char *rtp; /* moving pointer to rtp data */ |
| 630 | ssize_t rtp_dataleft; /* how much data left to parse in this round */ |
| 631 | char *scratch; |
| 632 | CURLcode result; |
| 633 | |
| 634 | if(rtspc->rtp_buf) { |
| 635 | /* There was some leftover data the last time. Merge buffers */ |
Elliott Hughes | cee0338 | 2017-06-23 12:17:18 -0700 | [diff] [blame] | 636 | char *newptr = Curl_saferealloc(rtspc->rtp_buf, |
| 637 | rtspc->rtp_bufsize + *nread); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 638 | if(!newptr) { |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 639 | rtspc->rtp_buf = NULL; |
| 640 | rtspc->rtp_bufsize = 0; |
| 641 | return CURLE_OUT_OF_MEMORY; |
| 642 | } |
| 643 | rtspc->rtp_buf = newptr; |
| 644 | memcpy(rtspc->rtp_buf + rtspc->rtp_bufsize, k->str, *nread); |
| 645 | rtspc->rtp_bufsize += *nread; |
| 646 | rtp = rtspc->rtp_buf; |
| 647 | rtp_dataleft = rtspc->rtp_bufsize; |
| 648 | } |
| 649 | else { |
| 650 | /* Just parse the request buffer directly */ |
| 651 | rtp = k->str; |
| 652 | rtp_dataleft = *nread; |
| 653 | } |
| 654 | |
| 655 | while((rtp_dataleft > 0) && |
| 656 | (rtp[0] == '$')) { |
| 657 | if(rtp_dataleft > 4) { |
| 658 | int rtp_length; |
| 659 | |
| 660 | /* Parse the header */ |
| 661 | /* The channel identifier immediately follows and is 1 byte */ |
| 662 | rtspc->rtp_channel = RTP_PKT_CHANNEL(rtp); |
| 663 | |
| 664 | /* The length is two bytes */ |
| 665 | rtp_length = RTP_PKT_LENGTH(rtp); |
| 666 | |
| 667 | if(rtp_dataleft < rtp_length + 4) { |
| 668 | /* Need more - incomplete payload*/ |
| 669 | *readmore = TRUE; |
| 670 | break; |
| 671 | } |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 672 | /* We have the full RTP interleaved packet |
| 673 | * Write out the header including the leading '$' */ |
| 674 | DEBUGF(infof(data, "RTP write channel %d rtp_length %d\n", |
| 675 | rtspc->rtp_channel, rtp_length)); |
| 676 | result = rtp_client_write(conn, &rtp[0], rtp_length + 4); |
| 677 | if(result) { |
| 678 | failf(data, "Got an error writing an RTP packet"); |
| 679 | *readmore = FALSE; |
| 680 | Curl_safefree(rtspc->rtp_buf); |
| 681 | rtspc->rtp_buf = NULL; |
| 682 | rtspc->rtp_bufsize = 0; |
| 683 | return result; |
| 684 | } |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 685 | |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 686 | /* Move forward in the buffer */ |
| 687 | rtp_dataleft -= rtp_length + 4; |
| 688 | rtp += rtp_length + 4; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 689 | |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 690 | if(data->set.rtspreq == RTSPREQ_RECEIVE) { |
| 691 | /* If we are in a passive receive, give control back |
| 692 | * to the app as often as we can. |
| 693 | */ |
| 694 | k->keepon &= ~KEEP_RECV; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 695 | } |
| 696 | } |
| 697 | else { |
| 698 | /* Need more - incomplete header */ |
| 699 | *readmore = TRUE; |
| 700 | break; |
| 701 | } |
| 702 | } |
| 703 | |
| 704 | if(rtp_dataleft != 0 && rtp[0] == '$') { |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 705 | DEBUGF(infof(data, "RTP Rewinding %zd %s\n", rtp_dataleft, |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 706 | *readmore ? "(READMORE)" : "")); |
| 707 | |
| 708 | /* Store the incomplete RTP packet for a "rewind" */ |
| 709 | scratch = malloc(rtp_dataleft); |
| 710 | if(!scratch) { |
| 711 | Curl_safefree(rtspc->rtp_buf); |
| 712 | rtspc->rtp_buf = NULL; |
| 713 | rtspc->rtp_bufsize = 0; |
| 714 | return CURLE_OUT_OF_MEMORY; |
| 715 | } |
| 716 | memcpy(scratch, rtp, rtp_dataleft); |
| 717 | Curl_safefree(rtspc->rtp_buf); |
| 718 | rtspc->rtp_buf = scratch; |
| 719 | rtspc->rtp_bufsize = rtp_dataleft; |
| 720 | |
| 721 | /* As far as the transfer is concerned, this data is consumed */ |
| 722 | *nread = 0; |
| 723 | return CURLE_OK; |
| 724 | } |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 725 | /* Fix up k->str to point just after the last RTP packet */ |
| 726 | k->str += *nread - rtp_dataleft; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 727 | |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 728 | /* either all of the data has been read or... |
| 729 | * rtp now points at the next byte to parse |
| 730 | */ |
| 731 | if(rtp_dataleft > 0) |
| 732 | DEBUGASSERT(k->str[0] == rtp[0]); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 733 | |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 734 | DEBUGASSERT(rtp_dataleft <= *nread); /* sanity check */ |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 735 | |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 736 | *nread = rtp_dataleft; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 737 | |
| 738 | /* If we get here, we have finished with the leftover/merge buffer */ |
| 739 | Curl_safefree(rtspc->rtp_buf); |
| 740 | rtspc->rtp_buf = NULL; |
| 741 | rtspc->rtp_bufsize = 0; |
| 742 | |
| 743 | return CURLE_OK; |
| 744 | } |
| 745 | |
| 746 | static |
| 747 | CURLcode rtp_client_write(struct connectdata *conn, char *ptr, size_t len) |
| 748 | { |
Alex Deymo | e3149cc | 2016-10-05 11:18:42 -0700 | [diff] [blame] | 749 | struct Curl_easy *data = conn->data; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 750 | size_t wrote; |
| 751 | curl_write_callback writeit; |
Alex Deymo | 486467e | 2017-12-19 19:04:07 +0100 | [diff] [blame] | 752 | void *user_ptr; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 753 | |
| 754 | if(len == 0) { |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 755 | failf(data, "Cannot write a 0 size RTP packet."); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 756 | return CURLE_WRITE_ERROR; |
| 757 | } |
| 758 | |
Alex Deymo | 486467e | 2017-12-19 19:04:07 +0100 | [diff] [blame] | 759 | /* If the user has configured CURLOPT_INTERLEAVEFUNCTION then use that |
| 760 | function and any configured CURLOPT_INTERLEAVEDATA to write out the RTP |
| 761 | data. Otherwise, use the CURLOPT_WRITEFUNCTION with the CURLOPT_WRITEDATA |
| 762 | pointer to write out the RTP data. */ |
| 763 | if(data->set.fwrite_rtp) { |
| 764 | writeit = data->set.fwrite_rtp; |
| 765 | user_ptr = data->set.rtp_out; |
| 766 | } |
| 767 | else |
| 768 | { |
| 769 | writeit = data->set.fwrite_func; |
| 770 | user_ptr = data->set.out; |
| 771 | } |
| 772 | |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 773 | Curl_set_in_callback(data, true); |
Alex Deymo | 486467e | 2017-12-19 19:04:07 +0100 | [diff] [blame] | 774 | wrote = writeit(ptr, 1, len, user_ptr); |
Elliott Hughes | cac3980 | 2018-04-27 16:19:43 -0700 | [diff] [blame] | 775 | Curl_set_in_callback(data, false); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 776 | |
| 777 | if(CURL_WRITEFUNC_PAUSE == wrote) { |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 778 | failf(data, "Cannot pause RTP"); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 779 | return CURLE_WRITE_ERROR; |
| 780 | } |
| 781 | |
| 782 | if(wrote != len) { |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 783 | failf(data, "Failed writing RTP data"); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 784 | return CURLE_WRITE_ERROR; |
| 785 | } |
| 786 | |
| 787 | return CURLE_OK; |
| 788 | } |
| 789 | |
| 790 | CURLcode Curl_rtsp_parseheader(struct connectdata *conn, |
| 791 | char *header) |
| 792 | { |
Alex Deymo | e3149cc | 2016-10-05 11:18:42 -0700 | [diff] [blame] | 793 | struct Curl_easy *data = conn->data; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 794 | long CSeq = 0; |
| 795 | |
| 796 | if(checkprefix("CSeq:", header)) { |
| 797 | /* Store the received CSeq. Match is verified in rtsp_done */ |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 798 | int nc = sscanf(&header[4], ": %ld", &CSeq); |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 799 | if(nc == 1) { |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 800 | struct RTSP *rtsp = data->req.protop; |
| 801 | rtsp->CSeq_recv = CSeq; /* mark the request */ |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 802 | data->state.rtsp_CSeq_recv = CSeq; /* update the handle */ |
| 803 | } |
| 804 | else { |
| 805 | failf(data, "Unable to read the CSeq header: [%s]", header); |
| 806 | return CURLE_RTSP_CSEQ_ERROR; |
| 807 | } |
| 808 | } |
| 809 | else if(checkprefix("Session:", header)) { |
| 810 | char *start; |
| 811 | |
| 812 | /* Find the first non-space letter */ |
Bertrand SIMONNET | e6cd738 | 2015-07-01 15:39:44 -0700 | [diff] [blame] | 813 | start = header + 8; |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 814 | while(*start && ISSPACE(*start)) |
| 815 | start++; |
| 816 | |
Lucas Eckels | 9bd90e6 | 2012-08-06 15:07:02 -0700 | [diff] [blame] | 817 | if(!*start) { |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 818 | failf(data, "Got a blank Session ID"); |
| 819 | } |
| 820 | else if(data->set.str[STRING_RTSP_SESSION_ID]) { |
| 821 | /* If the Session ID is set, then compare */ |
| 822 | if(strncmp(start, data->set.str[STRING_RTSP_SESSION_ID], |
| 823 | strlen(data->set.str[STRING_RTSP_SESSION_ID])) != 0) { |
| 824 | failf(data, "Got RTSP Session ID Line [%s], but wanted ID [%s]", |
| 825 | start, data->set.str[STRING_RTSP_SESSION_ID]); |
| 826 | return CURLE_RTSP_SESSION_ERROR; |
| 827 | } |
| 828 | } |
| 829 | else { |
Elliott Hughes | cee0338 | 2017-06-23 12:17:18 -0700 | [diff] [blame] | 830 | /* If the Session ID is not set, and we find it in a response, then set |
| 831 | * it. |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 832 | * |
Elliott Hughes | 82be86d | 2017-09-20 17:00:17 -0700 | [diff] [blame] | 833 | * Allow any non whitespace content, up to the field separator or end of |
Elliott Hughes | cee0338 | 2017-06-23 12:17:18 -0700 | [diff] [blame] | 834 | * line. RFC 2326 isn't 100% clear on the session ID and for example |
| 835 | * gstreamer does url-encoded session ID's not covered by the standard. |
| 836 | */ |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 837 | char *end = start; |
Elliott Hughes | cee0338 | 2017-06-23 12:17:18 -0700 | [diff] [blame] | 838 | while(*end && *end != ';' && !ISSPACE(*end)) |
Kristian Monsen | 5ab5018 | 2010-05-14 18:53:44 +0100 | [diff] [blame] | 839 | end++; |
| 840 | |
| 841 | /* Copy the id substring into a new buffer */ |
| 842 | data->set.str[STRING_RTSP_SESSION_ID] = malloc(end - start + 1); |
| 843 | if(data->set.str[STRING_RTSP_SESSION_ID] == NULL) |
| 844 | return CURLE_OUT_OF_MEMORY; |
| 845 | memcpy(data->set.str[STRING_RTSP_SESSION_ID], start, end - start); |
| 846 | (data->set.str[STRING_RTSP_SESSION_ID])[end - start] = '\0'; |
| 847 | } |
| 848 | } |
| 849 | return CURLE_OK; |
| 850 | } |
| 851 | |
| 852 | #endif /* CURL_DISABLE_RTSP */ |