diff options
Diffstat (limited to 'libcurl/src/lib/rtsp.c')
| -rw-r--r-- | libcurl/src/lib/rtsp.c | 807 |
1 files changed, 0 insertions, 807 deletions
diff --git a/libcurl/src/lib/rtsp.c b/libcurl/src/lib/rtsp.c deleted file mode 100644 index 531d206..0000000 --- a/libcurl/src/lib/rtsp.c +++ /dev/null @@ -1,807 +0,0 @@ -/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at http://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-#include "curl_setup.h"
-
-#ifndef CURL_DISABLE_RTSP
-
-#include "urldata.h"
-#include <curl/curl.h>
-#include "transfer.h"
-#include "sendf.h"
-#include "multiif.h"
-#include "http.h"
-#include "url.h"
-#include "progress.h"
-#include "rtsp.h"
-#include "rawstr.h"
-#include "select.h"
-#include "connect.h"
-#include "curl_printf.h"
-
-/* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
-
-/*
- * TODO (general)
- * -incoming server requests
- * -server CSeq counter
- * -digest authentication
- * -connect thru proxy
- * -pipelining?
- */
-
-
-#define RTP_PKT_CHANNEL(p) ((int)((unsigned char)((p)[1])))
-
-#define RTP_PKT_LENGTH(p) ((((int)((unsigned char)((p)[2]))) << 8) | \
- ((int)((unsigned char)((p)[3]))))
-
-/* protocol-specific functions set up to be called by the main engine */
-static CURLcode rtsp_do(struct connectdata *conn, bool *done);
-static CURLcode rtsp_done(struct connectdata *conn, CURLcode, bool premature);
-static CURLcode rtsp_connect(struct connectdata *conn, bool *done);
-static CURLcode rtsp_disconnect(struct connectdata *conn, bool dead);
-
-static int rtsp_getsock_do(struct connectdata *conn,
- curl_socket_t *socks,
- int numsocks);
-
-/*
- * Parse and write out any available RTP data.
- *
- * nread: amount of data left after k->str. will be modified if RTP
- * data is parsed and k->str is moved up
- * readmore: whether or not the RTP parser needs more data right away
- */
-static CURLcode rtsp_rtp_readwrite(struct SessionHandle *data,
- struct connectdata *conn,
- ssize_t *nread,
- bool *readmore);
-
-static CURLcode rtsp_setup_connection(struct connectdata *conn);
-
-
-/* this returns the socket to wait for in the DO and DOING state for the multi
- interface and then we're always _sending_ a request and thus we wait for
- the single socket to become writable only */
-static int rtsp_getsock_do(struct connectdata *conn,
- curl_socket_t *socks,
- int numsocks)
-{
- /* write mode */
- (void)numsocks; /* unused, we trust it to be at least 1 */
- socks[0] = conn->sock[FIRSTSOCKET];
- return GETSOCK_WRITESOCK(0);
-}
-
-static
-CURLcode rtp_client_write(struct connectdata *conn, char *ptr, size_t len);
-
-
-/*
- * RTSP handler interface.
- */
-const struct Curl_handler Curl_handler_rtsp = {
- "RTSP", /* scheme */
- rtsp_setup_connection, /* setup_connection */
- rtsp_do, /* do_it */
- rtsp_done, /* done */
- ZERO_NULL, /* do_more */
- rtsp_connect, /* connect_it */
- ZERO_NULL, /* connecting */
- ZERO_NULL, /* doing */
- ZERO_NULL, /* proto_getsock */
- rtsp_getsock_do, /* doing_getsock */
- ZERO_NULL, /* domore_getsock */
- ZERO_NULL, /* perform_getsock */
- rtsp_disconnect, /* disconnect */
- rtsp_rtp_readwrite, /* readwrite */
- PORT_RTSP, /* defport */
- CURLPROTO_RTSP, /* protocol */
- PROTOPT_NONE /* flags */
-};
-
-
-static CURLcode rtsp_setup_connection(struct connectdata *conn)
-{
- struct RTSP *rtsp;
-
- conn->data->req.protop = rtsp = calloc(1, sizeof(struct RTSP));
- if(!rtsp)
- return CURLE_OUT_OF_MEMORY;
-
- return CURLE_OK;
-}
-
-
-/*
- * The server may send us RTP data at any point, and RTSPREQ_RECEIVE does not
- * want to block the application forever while receiving a stream. Therefore,
- * we cannot assume that an RTSP socket is dead just because it is readable.
- *
- * Instead, if it is readable, run Curl_getconnectinfo() to peek at the socket
- * and distinguish between closed and data.
- */
-CURL_STATIC bool Curl_rtsp_connisdead(struct connectdata *check)
-{
- int sval;
- bool ret_val = TRUE;
-
- sval = Curl_socket_ready(check->sock[FIRSTSOCKET], CURL_SOCKET_BAD, 0);
- if(sval == 0) {
- /* timeout */
- ret_val = FALSE;
- }
- else if(sval & CURL_CSELECT_ERR) {
- /* socket is in an error state */
- ret_val = TRUE;
- }
- else if((sval & CURL_CSELECT_IN) && check->data) {
- /* readable with no error. could be closed or could be alive but we can
- only check if we have a proper SessionHandle for the connection */
- curl_socket_t connectinfo = Curl_getconnectinfo(check->data, &check);
- if(connectinfo != CURL_SOCKET_BAD)
- ret_val = FALSE;
- }
-
- return ret_val;
-}
-
-static CURLcode rtsp_connect(struct connectdata *conn, bool *done)
-{
- CURLcode httpStatus;
- struct SessionHandle *data = conn->data;
-
- httpStatus = Curl_http_connect(conn, done);
-
- /* Initialize the CSeq if not already done */
- if(data->state.rtsp_next_client_CSeq == 0)
- data->state.rtsp_next_client_CSeq = 1;
- if(data->state.rtsp_next_server_CSeq == 0)
- data->state.rtsp_next_server_CSeq = 1;
-
- conn->proto.rtspc.rtp_channel = -1;
-
- return httpStatus;
-}
-
-static CURLcode rtsp_disconnect(struct connectdata *conn, bool dead)
-{
- (void) dead;
- Curl_safefree(conn->proto.rtspc.rtp_buf);
- return CURLE_OK;
-}
-
-
-static CURLcode rtsp_done(struct connectdata *conn,
- CURLcode status, bool premature)
-{
- struct SessionHandle *data = conn->data;
- struct RTSP *rtsp = data->req.protop;
- CURLcode httpStatus;
- long CSeq_sent;
- long CSeq_recv;
-
- /* Bypass HTTP empty-reply checks on receive */
- if(data->set.rtspreq == RTSPREQ_RECEIVE)
- premature = TRUE;
-
- httpStatus = Curl_http_done(conn, status, premature);
-
- if(rtsp) {
- /* Check the sequence numbers */
- CSeq_sent = rtsp->CSeq_sent;
- CSeq_recv = rtsp->CSeq_recv;
- if((data->set.rtspreq != RTSPREQ_RECEIVE) && (CSeq_sent != CSeq_recv)) {
- failf(data,
- "The CSeq of this request %ld did not match the response %ld",
- CSeq_sent, CSeq_recv);
- return CURLE_RTSP_CSEQ_ERROR;
- }
- else if(data->set.rtspreq == RTSPREQ_RECEIVE &&
- (conn->proto.rtspc.rtp_channel == -1)) {
- infof(data, "Got an RTP Receive with a CSeq of %ld\n", CSeq_recv);
- /* TODO CPC: Server -> Client logic here */
- }
- }
-
- return httpStatus;
-}
-
-static CURLcode rtsp_do(struct connectdata *conn, bool *done)
-{
- struct SessionHandle *data = conn->data;
- CURLcode result=CURLE_OK;
- Curl_RtspReq rtspreq = data->set.rtspreq;
- struct RTSP *rtsp = data->req.protop;
- struct HTTP *http;
- Curl_send_buffer *req_buffer;
- curl_off_t postsize = 0; /* for ANNOUNCE and SET_PARAMETER */
- curl_off_t putsize = 0; /* for ANNOUNCE and SET_PARAMETER */
-
- const char *p_request = NULL;
- const char *p_session_id = NULL;
- const char *p_accept = NULL;
- const char *p_accept_encoding = NULL;
- const char *p_range = NULL;
- const char *p_referrer = NULL;
- const char *p_stream_uri = NULL;
- const char *p_transport = NULL;
- const char *p_uagent = NULL;
-
- *done = TRUE;
-
- http = &(rtsp->http_wrapper);
- /* Assert that no one has changed the RTSP struct in an evil way */
- DEBUGASSERT((void *)http == (void *)rtsp);
-
- rtsp->CSeq_sent = data->state.rtsp_next_client_CSeq;
- rtsp->CSeq_recv = 0;
-
- /* Setup the 'p_request' pointer to the proper p_request string
- * Since all RTSP requests are included here, there is no need to
- * support custom requests like HTTP.
- **/
- DEBUGASSERT((rtspreq > RTSPREQ_NONE && rtspreq < RTSPREQ_LAST));
- data->set.opt_no_body = TRUE; /* most requests don't contain a body */
- switch(rtspreq) {
- case RTSPREQ_NONE:
- failf(data, "Got invalid RTSP request: RTSPREQ_NONE");
- return CURLE_BAD_FUNCTION_ARGUMENT;
- case RTSPREQ_OPTIONS:
- p_request = "OPTIONS";
- break;
- case RTSPREQ_DESCRIBE:
- p_request = "DESCRIBE";
- data->set.opt_no_body = FALSE;
- break;
- case RTSPREQ_ANNOUNCE:
- p_request = "ANNOUNCE";
- break;
- case RTSPREQ_SETUP:
- p_request = "SETUP";
- break;
- case RTSPREQ_PLAY:
- p_request = "PLAY";
- break;
- case RTSPREQ_PAUSE:
- p_request = "PAUSE";
- break;
- case RTSPREQ_TEARDOWN:
- p_request = "TEARDOWN";
- break;
- case RTSPREQ_GET_PARAMETER:
- /* GET_PARAMETER's no_body status is determined later */
- p_request = "GET_PARAMETER";
- data->set.opt_no_body = FALSE;
- break;
- case RTSPREQ_SET_PARAMETER:
- p_request = "SET_PARAMETER";
- break;
- case RTSPREQ_RECORD:
- p_request = "RECORD";
- break;
- case RTSPREQ_RECEIVE:
- p_request = "";
- /* Treat interleaved RTP as body*/
- data->set.opt_no_body = FALSE;
- break;
- case RTSPREQ_LAST:
- failf(data, "Got invalid RTSP request: RTSPREQ_LAST");
- return CURLE_BAD_FUNCTION_ARGUMENT;
- }
-
- if(rtspreq == RTSPREQ_RECEIVE) {
- Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE,
- &http->readbytecount, -1, NULL);
-
- return result;
- }
-
- p_session_id = data->set.str[STRING_RTSP_SESSION_ID];
- if(!p_session_id &&
- (rtspreq & ~(RTSPREQ_OPTIONS | RTSPREQ_DESCRIBE | RTSPREQ_SETUP))) {
- failf(data, "Refusing to issue an RTSP request [%s] without a session ID.",
- p_request ? p_request : "");
- return CURLE_BAD_FUNCTION_ARGUMENT;
- }
-
- /* TODO: auth? */
- /* TODO: proxy? */
-
- /* Stream URI. Default to server '*' if not specified */
- if(data->set.str[STRING_RTSP_STREAM_URI]) {
- p_stream_uri = data->set.str[STRING_RTSP_STREAM_URI];
- }
- else {
- p_stream_uri = "*";
- }
-
- /* Transport Header for SETUP requests */
- p_transport = Curl_checkheaders(conn, "Transport:");
- if(rtspreq == RTSPREQ_SETUP && !p_transport) {
- /* New Transport: setting? */
- if(data->set.str[STRING_RTSP_TRANSPORT]) {
- Curl_safefree(conn->allocptr.rtsp_transport);
-
- conn->allocptr.rtsp_transport =
- aprintf("Transport: %s\r\n",
- data->set.str[STRING_RTSP_TRANSPORT]);
- if(!conn->allocptr.rtsp_transport)
- return CURLE_OUT_OF_MEMORY;
- }
- else {
- failf(data,
- "Refusing to issue an RTSP SETUP without a Transport: header.");
- return CURLE_BAD_FUNCTION_ARGUMENT;
- }
-
- p_transport = conn->allocptr.rtsp_transport;
- }
-
- /* Accept Headers for DESCRIBE requests */
- if(rtspreq == RTSPREQ_DESCRIBE) {
- /* Accept Header */
- p_accept = Curl_checkheaders(conn, "Accept:")?
- NULL:"Accept: application/sdp\r\n";
-
- /* Accept-Encoding header */
- if(!Curl_checkheaders(conn, "Accept-Encoding:") &&
- data->set.str[STRING_ENCODING]) {
- Curl_safefree(conn->allocptr.accept_encoding);
- conn->allocptr.accept_encoding =
- aprintf("Accept-Encoding: %s\r\n", data->set.str[STRING_ENCODING]);
-
- if(!conn->allocptr.accept_encoding)
- return CURLE_OUT_OF_MEMORY;
-
- p_accept_encoding = conn->allocptr.accept_encoding;
- }
- }
-
- /* The User-Agent string might have been allocated in url.c already, because
- it might have been used in the proxy connect, but if we have got a header
- with the user-agent string specified, we erase the previously made string
- here. */
- if(Curl_checkheaders(conn, "User-Agent:") && conn->allocptr.uagent) {
- Curl_safefree(conn->allocptr.uagent);
- conn->allocptr.uagent = NULL;
- }
- else if(!Curl_checkheaders(conn, "User-Agent:") &&
- data->set.str[STRING_USERAGENT]) {
- p_uagent = conn->allocptr.uagent;
- }
-
- /* Referrer */
- Curl_safefree(conn->allocptr.ref);
- if(data->change.referer && !Curl_checkheaders(conn, "Referer:"))
- conn->allocptr.ref = aprintf("Referer: %s\r\n", data->change.referer);
- else
- conn->allocptr.ref = NULL;
-
- p_referrer = conn->allocptr.ref;
-
- /*
- * Range Header
- * Only applies to PLAY, PAUSE, RECORD
- *
- * Go ahead and use the Range stuff supplied for HTTP
- */
- if(data->state.use_range &&
- (rtspreq & (RTSPREQ_PLAY | RTSPREQ_PAUSE | RTSPREQ_RECORD))) {
-
- /* Check to see if there is a range set in the custom headers */
- if(!Curl_checkheaders(conn, "Range:") && data->state.range) {
- Curl_safefree(conn->allocptr.rangeline);
- conn->allocptr.rangeline = aprintf("Range: %s\r\n", data->state.range);
- p_range = conn->allocptr.rangeline;
- }
- }
-
- /*
- * Sanity check the custom headers
- */
- if(Curl_checkheaders(conn, "CSeq:")) {
- failf(data, "CSeq cannot be set as a custom header.");
- return CURLE_RTSP_CSEQ_ERROR;
- }
- if(Curl_checkheaders(conn, "Session:")) {
- failf(data, "Session ID cannot be set as a custom header.");
- return CURLE_BAD_FUNCTION_ARGUMENT;
- }
-
- /* Initialize a dynamic send buffer */
- req_buffer = Curl_add_buffer_init();
-
- if(!req_buffer)
- return CURLE_OUT_OF_MEMORY;
-
- result =
- Curl_add_bufferf(req_buffer,
- "%s %s RTSP/1.0\r\n" /* Request Stream-URI RTSP/1.0 */
- "CSeq: %ld\r\n", /* CSeq */
- (p_request ? p_request : ""), p_stream_uri,
- rtsp->CSeq_sent);
- if(result)
- return result;
-
- /*
- * Rather than do a normal alloc line, keep the session_id unformatted
- * to make comparison easier
- */
- if(p_session_id) {
- result = Curl_add_bufferf(req_buffer, "Session: %s\r\n", p_session_id);
- if(result)
- return result;
- }
-
- /*
- * Shared HTTP-like options
- */
- result = Curl_add_bufferf(req_buffer,
- "%s" /* transport */
- "%s" /* accept */
- "%s" /* accept-encoding */
- "%s" /* range */
- "%s" /* referrer */
- "%s" /* user-agent */
- ,
- p_transport ? p_transport : "",
- p_accept ? p_accept : "",
- p_accept_encoding ? p_accept_encoding : "",
- p_range ? p_range : "",
- p_referrer ? p_referrer : "",
- p_uagent ? p_uagent : "");
- if(result)
- return result;
-
- if((rtspreq == RTSPREQ_SETUP) || (rtspreq == RTSPREQ_DESCRIBE)) {
- result = Curl_add_timecondition(data, req_buffer);
- if(result)
- return result;
- }
-
- result = Curl_add_custom_headers(conn, FALSE, req_buffer);
- if(result)
- return result;
-
- if(rtspreq == RTSPREQ_ANNOUNCE ||
- rtspreq == RTSPREQ_SET_PARAMETER ||
- rtspreq == RTSPREQ_GET_PARAMETER) {
-
- if(data->set.upload) {
- putsize = data->state.infilesize;
- data->set.httpreq = HTTPREQ_PUT;
-
- }
- else {
- postsize = (data->set.postfieldsize != -1)?
- data->set.postfieldsize:
- (data->set.postfields? (curl_off_t)strlen(data->set.postfields):0);
- data->set.httpreq = HTTPREQ_POST;
- }
-
- if(putsize > 0 || postsize > 0) {
- /* As stated in the http comments, it is probably not wise to
- * actually set a custom Content-Length in the headers */
- if(!Curl_checkheaders(conn, "Content-Length:")) {
- result = Curl_add_bufferf(req_buffer,
- "Content-Length: %" CURL_FORMAT_CURL_OFF_T"\r\n",
- (data->set.upload ? putsize : postsize));
- if(result)
- return result;
- }
-
- if(rtspreq == RTSPREQ_SET_PARAMETER ||
- rtspreq == RTSPREQ_GET_PARAMETER) {
- if(!Curl_checkheaders(conn, "Content-Type:")) {
- result = Curl_add_bufferf(req_buffer,
- "Content-Type: text/parameters\r\n");
- if(result)
- return result;
- }
- }
-
- if(rtspreq == RTSPREQ_ANNOUNCE) {
- if(!Curl_checkheaders(conn, "Content-Type:")) {
- result = Curl_add_bufferf(req_buffer,
- "Content-Type: application/sdp\r\n");
- if(result)
- return result;
- }
- }
-
- data->state.expect100header = FALSE; /* RTSP posts are simple/small */
- }
- else if(rtspreq == RTSPREQ_GET_PARAMETER) {
- /* Check for an empty GET_PARAMETER (heartbeat) request */
- data->set.httpreq = HTTPREQ_HEAD;
- data->set.opt_no_body = TRUE;
- }
- }
-
- /* RTSP never allows chunked transfer */
- data->req.forbidchunk = TRUE;
- /* Finish the request buffer */
- result = Curl_add_buffer(req_buffer, "\r\n", 2);
- if(result)
- return result;
-
- if(postsize > 0) {
- result = Curl_add_buffer(req_buffer, data->set.postfields,
- (size_t)postsize);
- if(result)
- return result;
- }
-
- /* issue the request */
- result = Curl_add_buffer_send(req_buffer, conn,
- &data->info.request_size, 0, FIRSTSOCKET);
- if(result) {
- failf(data, "Failed sending RTSP request");
- return result;
- }
-
- Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE, &http->readbytecount,
- putsize?FIRSTSOCKET:-1,
- putsize?&http->writebytecount:NULL);
-
- /* Increment the CSeq on success */
- data->state.rtsp_next_client_CSeq++;
-
- if(http->writebytecount) {
- /* if a request-body has been sent off, we make sure this progress is
- noted properly */
- Curl_pgrsSetUploadCounter(data, http->writebytecount);
- if(Curl_pgrsUpdate(conn))
- result = CURLE_ABORTED_BY_CALLBACK;
- }
-
- return result;
-}
-
-
-static CURLcode rtsp_rtp_readwrite(struct SessionHandle *data,
- struct connectdata *conn,
- ssize_t *nread,
- bool *readmore) {
- struct SingleRequest *k = &data->req;
- struct rtsp_conn *rtspc = &(conn->proto.rtspc);
-
- char *rtp; /* moving pointer to rtp data */
- ssize_t rtp_dataleft; /* how much data left to parse in this round */
- char *scratch;
- CURLcode result;
-
- if(rtspc->rtp_buf) {
- /* There was some leftover data the last time. Merge buffers */
- char *newptr = realloc(rtspc->rtp_buf, rtspc->rtp_bufsize + *nread);
- if(!newptr) {
- Curl_safefree(rtspc->rtp_buf);
- rtspc->rtp_buf = NULL;
- rtspc->rtp_bufsize = 0;
- return CURLE_OUT_OF_MEMORY;
- }
- rtspc->rtp_buf = newptr;
- memcpy(rtspc->rtp_buf + rtspc->rtp_bufsize, k->str, *nread);
- rtspc->rtp_bufsize += *nread;
- rtp = rtspc->rtp_buf;
- rtp_dataleft = rtspc->rtp_bufsize;
- }
- else {
- /* Just parse the request buffer directly */
- rtp = k->str;
- rtp_dataleft = *nread;
- }
-
- while((rtp_dataleft > 0) &&
- (rtp[0] == '$')) {
- if(rtp_dataleft > 4) {
- int rtp_length;
-
- /* Parse the header */
- /* The channel identifier immediately follows and is 1 byte */
- rtspc->rtp_channel = RTP_PKT_CHANNEL(rtp);
-
- /* The length is two bytes */
- rtp_length = RTP_PKT_LENGTH(rtp);
-
- if(rtp_dataleft < rtp_length + 4) {
- /* Need more - incomplete payload*/
- *readmore = TRUE;
- break;
- }
- else {
- /* We have the full RTP interleaved packet
- * Write out the header including the leading '$' */
- DEBUGF(infof(data, "RTP write channel %d rtp_length %d\n",
- rtspc->rtp_channel, rtp_length));
- result = rtp_client_write(conn, &rtp[0], rtp_length + 4);
- if(result) {
- failf(data, "Got an error writing an RTP packet");
- *readmore = FALSE;
- Curl_safefree(rtspc->rtp_buf);
- rtspc->rtp_buf = NULL;
- rtspc->rtp_bufsize = 0;
- return result;
- }
-
- /* Move forward in the buffer */
- rtp_dataleft -= rtp_length + 4;
- rtp += rtp_length + 4;
-
- if(data->set.rtspreq == RTSPREQ_RECEIVE) {
- /* If we are in a passive receive, give control back
- * to the app as often as we can.
- */
- k->keepon &= ~KEEP_RECV;
- }
- }
- }
- else {
- /* Need more - incomplete header */
- *readmore = TRUE;
- break;
- }
- }
-
- if(rtp_dataleft != 0 && rtp[0] == '$') {
- DEBUGF(infof(data, "RTP Rewinding %zd %s\n", rtp_dataleft,
- *readmore ? "(READMORE)" : ""));
-
- /* Store the incomplete RTP packet for a "rewind" */
- scratch = malloc(rtp_dataleft);
- if(!scratch) {
- Curl_safefree(rtspc->rtp_buf);
- rtspc->rtp_buf = NULL;
- rtspc->rtp_bufsize = 0;
- return CURLE_OUT_OF_MEMORY;
- }
- memcpy(scratch, rtp, rtp_dataleft);
- Curl_safefree(rtspc->rtp_buf);
- rtspc->rtp_buf = scratch;
- rtspc->rtp_bufsize = rtp_dataleft;
-
- /* As far as the transfer is concerned, this data is consumed */
- *nread = 0;
- return CURLE_OK;
- }
- else {
- /* Fix up k->str to point just after the last RTP packet */
- k->str += *nread - rtp_dataleft;
-
- /* either all of the data has been read or...
- * rtp now points at the next byte to parse
- */
- if(rtp_dataleft > 0)
- DEBUGASSERT(k->str[0] == rtp[0]);
-
- DEBUGASSERT(rtp_dataleft <= *nread); /* sanity check */
-
- *nread = rtp_dataleft;
- }
-
- /* If we get here, we have finished with the leftover/merge buffer */
- Curl_safefree(rtspc->rtp_buf);
- rtspc->rtp_buf = NULL;
- rtspc->rtp_bufsize = 0;
-
- return CURLE_OK;
-}
-
-static
-CURLcode rtp_client_write(struct connectdata *conn, char *ptr, size_t len)
-{
- struct SessionHandle *data = conn->data;
- size_t wrote;
- curl_write_callback writeit;
-
- if(len == 0) {
- failf (data, "Cannot write a 0 size RTP packet.");
- return CURLE_WRITE_ERROR;
- }
-
- writeit = data->set.fwrite_rtp?data->set.fwrite_rtp:data->set.fwrite_func;
- wrote = writeit(ptr, 1, len, data->set.rtp_out);
-
- if(CURL_WRITEFUNC_PAUSE == wrote) {
- failf (data, "Cannot pause RTP");
- return CURLE_WRITE_ERROR;
- }
-
- if(wrote != len) {
- failf (data, "Failed writing RTP data");
- return CURLE_WRITE_ERROR;
- }
-
- return CURLE_OK;
-}
-
-CURL_STATIC CURLcode Curl_rtsp_parseheader(struct connectdata *conn,
- char *header)
-{
- struct SessionHandle *data = conn->data;
- long CSeq = 0;
-
- if(checkprefix("CSeq:", header)) {
- /* Store the received CSeq. Match is verified in rtsp_done */
- int nc = sscanf(&header[4], ": %ld", &CSeq);
- if(nc == 1) {
- struct RTSP *rtsp = data->req.protop;
- rtsp->CSeq_recv = CSeq; /* mark the request */
- data->state.rtsp_CSeq_recv = CSeq; /* update the handle */
- }
- else {
- failf(data, "Unable to read the CSeq header: [%s]", header);
- return CURLE_RTSP_CSEQ_ERROR;
- }
- }
- else if(checkprefix("Session:", header)) {
- char *start;
-
- /* Find the first non-space letter */
- start = header + 8;
- while(*start && ISSPACE(*start))
- start++;
-
- if(!*start) {
- failf(data, "Got a blank Session ID");
- }
- else if(data->set.str[STRING_RTSP_SESSION_ID]) {
- /* If the Session ID is set, then compare */
- if(strncmp(start, data->set.str[STRING_RTSP_SESSION_ID],
- strlen(data->set.str[STRING_RTSP_SESSION_ID])) != 0) {
- failf(data, "Got RTSP Session ID Line [%s], but wanted ID [%s]",
- start, data->set.str[STRING_RTSP_SESSION_ID]);
- return CURLE_RTSP_SESSION_ERROR;
- }
- }
- else {
- /* If the Session ID is not set, and we find it in a response, then
- set it */
-
- /* The session ID can be an alphanumeric or a 'safe' character
- *
- * RFC 2326 15.1 Base Syntax:
- * safe = "\$" | "-" | "_" | "." | "+"
- * */
- char *end = start;
- while(*end &&
- (ISALNUM(*end) || *end == '-' || *end == '_' || *end == '.' ||
- *end == '+' ||
- (*end == '\\' && *(end + 1) && *(end + 1) == '$' && (++end, 1))))
- end++;
-
- /* Copy the id substring into a new buffer */
- data->set.str[STRING_RTSP_SESSION_ID] = malloc(end - start + 1);
- if(data->set.str[STRING_RTSP_SESSION_ID] == NULL)
- return CURLE_OUT_OF_MEMORY;
- memcpy(data->set.str[STRING_RTSP_SESSION_ID], start, end - start);
- (data->set.str[STRING_RTSP_SESSION_ID])[end - start] = '\0';
- }
- }
- return CURLE_OK;
-}
-
-#endif /* CURL_DISABLE_RTSP */
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