Module: sip-router Branch: master Commit: 12a33bc8d08cabefb2a0205d4f3c1140b4355707 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=12a33bc… Author: Ovidiu Sas &lt;osas(a)voipembedded.com&gt; Committer: Ovidiu Sas &lt;osas(a)voipembedded.com&gt; Date: Mon Aug 9 16:38:09 2010 -0400 core: sdp parser - added suport for fmtp attributes --- parser/sdp/sdp.c | 69 ++++++++++++++++++++++++++++------------- parser/sdp/sdp.h | 1 + parser/sdp/sdp_helpr_funcs.c | 42 +++++++++++++++++++++++++ parser/sdp/sdp_helpr_funcs.h | 1 + 4 files changed, 91 insertions(+), 22 deletions(-) diff --git a/parser/sdp/sdp.c b/parser/sdp/sdp.c index d3e6f85..0025c03 100644 --- a/parser/sdp/sdp.c +++ b/parser/sdp/sdp.c @@ -69,9 +69,9 @@ static inline sdp_session_cell_t *add_sdp_session(sdp_info_t* _sdp, int session_ len = sizeof(sdp_session_cell_t); session = (sdp_session_cell_t*)pkg_malloc(len); - if (session == 0) { + if (session == NULL) { LM_ERR("No memory left\n"); - return 0; + return NULL; } memset( session, 0, len); @@ -100,9 +100,9 @@ static inline sdp_stream_cell_t *add_sdp_stream(sdp_session_cell_t* _session, in len = sizeof(sdp_stream_cell_t); stream = (sdp_stream_cell_t*)pkg_malloc(len); - if (stream == 0) { + if (stream == NULL) { LM_ERR("No memory left\n"); - return 0; + return NULL; } memset( stream, 0, len); @@ -141,9 +141,9 @@ static inline sdp_payload_attr_t *add_sdp_payload(sdp_stream_cell_t* _stream, in len = sizeof(sdp_payload_attr_t); payload_attr = (sdp_payload_attr_t*)pkg_malloc(len); - if (payload_attr == 0) { + if (payload_attr == NULL) { LM_ERR("No memory left\n"); - return 0; + return NULL; } memset( payload_attr, 0, len); @@ -167,14 +167,14 @@ static inline sdp_payload_attr_t** init_p_payload_attr(sdp_stream_cell_t* _strea int payloads_num, i; sdp_payload_attr_t *payload; - if (_stream == 0) { + if (_stream == NULL) { LM_ERR("Invalid stream\n"); - return 0; + return NULL; } payloads_num = _stream->payloads_num; if (payloads_num == 0) { LM_ERR("Invalid number of payloads\n"); - return 0; + return NULL; } if (pkg == USE_PKG_MEM) { _stream->p_payload_attr = (sdp_payload_attr_t**)pkg_malloc(payloads_num * sizeof(sdp_payload_attr_t*)); @@ -182,11 +182,11 @@ static inline sdp_payload_attr_t** init_p_payload_attr(sdp_stream_cell_t* _strea _stream->p_payload_attr = (sdp_payload_attr_t**)shm_malloc(payloads_num * sizeof(sdp_payload_attr_t*)); } else { LM_ERR("undefined memory type\n"); - return 0; + return NULL; } - if (_stream->p_payload_attr == 0) { + if (_stream->p_payload_attr == NULL) { LM_ERR("No memory left\n"); - return 0; + return NULL; } --payloads_num; @@ -205,7 +205,7 @@ static inline sdp_payload_attr_t** init_p_payload_attr(sdp_stream_cell_t* _strea void set_sdp_payload_attr(sdp_payload_attr_t *payload_attr, str *rtp_enc, str *rtp_clock, str *rtp_params) { - if (payload_attr == 0) { + if (payload_attr == NULL) { LM_ERR("Invalid payload location\n"); return; } @@ -219,6 +219,18 @@ void set_sdp_payload_attr(sdp_payload_attr_t *payload_attr, str *rtp_enc, str *r return; } +void set_sdp_payload_fmtp(sdp_payload_attr_t *payload_attr, str *fmtp_string ) +{ + if (payload_attr == NULL) { + LM_ERR("Invalid payload location\n"); + return; + } + payload_attr->fmtp_string.s = fmtp_string->s; + payload_attr->fmtp_string.len = fmtp_string->len; + + return; +} + /* * Getters .... */ @@ -353,6 +365,7 @@ static int parse_sdp_session(str *sdp_body, int session_num, str *cnt_disp, sdp_ sdp_stream_cell_t *stream; sdp_payload_attr_t *payload_attr; int parse_payload_attr; + str fmtp_string; /* * Parsing of SDP body. @@ -478,7 +491,7 @@ static int parse_sdp_session(str *sdp_body, int session_num, str *cnt_disp, sdp_ payload.s = tmpstr1.s; payload.len = a1p - tmpstr1.s; payload_attr = add_sdp_payload(stream, payloadnum, &payload); - if (payload_attr == 0) return -1; + if (payload_attr == NULL) return -1; tmpstr1.len -= payload.len; tmpstr1.s = a1p; a2p = eat_space_end(tmpstr1.s, tmpstr1.s + tmpstr1.len); @@ -490,7 +503,7 @@ static int parse_sdp_session(str *sdp_body, int session_num, str *cnt_disp, sdp_ } /* Initialize fast access pointers */ - if (0 == init_p_payload_attr(stream, USE_PKG_MEM)) { + if (NULL == init_p_payload_attr(stream, USE_PKG_MEM)) { return -1; } parse_payload_attr = 1; @@ -523,6 +536,10 @@ static int parse_sdp_session(str *sdp_body, int session_num, str *cnt_disp, sdp_ set_sdp_payload_attr(payload_attr, &rtp_enc, &rtp_clock, &rtp_params); } else if (extract_rtcp(&tmpstr1, &stream->rtcp_port) == 0) { a1p = stream->rtcp_port.s + stream->rtcp_port.len; + } else if (parse_payload_attr && extract_fmtp(&tmpstr1,&rtp_payload,&fmtp_string) == 0){ + a1p = fmtp_string.s + fmtp_string.len; + payload_attr = (sdp_payload_attr_t*)get_sdp_payload4payload(stream, &rtp_payload); + set_sdp_payload_fmtp(payload_attr, &fmtp_string); } else if (extract_accept_types(&tmpstr1, &stream->accept_types) == 0) { a1p = stream->accept_types.s + stream->accept_types.len; } else if (extract_accept_wrapped_types(&tmpstr1, &stream->accept_wrapped_types) == 0) { @@ -649,7 +666,7 @@ int parse_sdp(struct sip_msg* _m) } body.s = get_body(_m); - if (body.s==0) { + if (body.s==NULL) { LM_ERR("failed to get the message body\n"); return -1; } @@ -732,7 +749,7 @@ void free_sdp(sdp_info_t** _sdp) sdp_payload_attr_t *payload, *l_payload; LM_DBG("_sdp = %p\n", _sdp); - if (sdp == 0) return; + if (sdp == NULL) return; LM_DBG("sdp = %p\n", sdp); session = sdp->sessions; LM_DBG("session = %p\n", session); @@ -783,13 +800,14 @@ void print_sdp_stream(sdp_stream_cell_t *stream, int log_level) stream->accept_wrapped_types.len, stream->accept_wrapped_types.s); payload = stream->payload_attr; while (payload) { - LOG(log_level, "......payload[%d]:%p=>%p p_payload_attr[%d]:%p '%.*s' '%.*s' '%.*s' '%.*s'\n", + LOG(log_level, "......payload[%d]:%p=>%p p_payload_attr[%d]:%p '%.*s' '%.*s' '%.*s' '%.*s' '%.*s'\n", payload->payload_num, payload, payload->next, payload->payload_num, stream->p_payload_attr[payload->payload_num], payload->rtp_payload.len, payload->rtp_payload.s, payload->rtp_enc.len, payload->rtp_enc.s, payload->rtp_clock.len, payload->rtp_clock.s, - payload->rtp_params.len, payload->rtp_params.s); + payload->rtp_params.len, payload->rtp_params.s, + payload->fmtp_string.len, payload->fmtp_string.s); payload=payload->next; } } @@ -891,7 +909,8 @@ sdp_payload_attr_t * clone_sdp_payload_attr(sdp_payload_attr_t *attr) attr->rtp_payload.len + attr->rtp_enc.len + attr->rtp_clock.len + - attr->rtp_params.len; + attr->rtp_params.len + + attr->fmtp_string.len; clone_attr = (sdp_payload_attr_t*)shm_malloc(len); if (clone_attr == NULL) { LM_ERR("no more shm mem (%d)\n",len); @@ -930,6 +949,13 @@ sdp_payload_attr_t * clone_sdp_payload_attr(sdp_payload_attr_t *attr) p += attr->rtp_params.len; } + if (attr->fmtp_string.len) { + clone_attr->fmtp_string.s = p; + clone_attr->fmtp_string.len = attr->fmtp_string.len; + memcpy( p, attr->fmtp_string.s, attr->fmtp_string.len); + p += attr->fmtp_string.len; + } + return clone_attr; } @@ -1163,8 +1189,7 @@ error: sdp_info_t * clone_sdp_info(struct sip_msg* _m) { - sdp_info_t *clone_sdp_info, *sdp_info=(sdp_info_t*)_m->body -; + sdp_info_t *clone_sdp_info, *sdp_info=(sdp_info_t*)_m->body; sdp_session_cell_t *clone_session, *prev_clone_session, *session; int i, len; diff --git a/parser/sdp/sdp.h b/parser/sdp/sdp.h index c7cc866..bdbf593 100644 --- a/parser/sdp/sdp.h +++ b/parser/sdp/sdp.h @@ -41,6 +41,7 @@ typedef struct sdp_payload_attr { str rtp_enc; str rtp_clock; str rtp_params; + str fmtp_string; } sdp_payload_attr_t; typedef struct sdp_stream_cell { diff --git a/parser/sdp/sdp_helpr_funcs.c b/parser/sdp/sdp_helpr_funcs.c index 90a19fe..8b521f9 100644 --- a/parser/sdp/sdp_helpr_funcs.c +++ b/parser/sdp/sdp_helpr_funcs.c @@ -224,6 +224,48 @@ int extract_rtpmap(str *body, return 0; } +int extract_fmtp( str *body, str *fmtp_payload, str *fmtp_string ) +{ + char *cp, *cp1; + int len; + + if (strncasecmp(body->s, "a=fmtp:", 7) !=0) { + /*LM_DBG("We are not pointing to an a=fmtp: attribute =>`%.*s'\n", body->len, body->s); */ + return -1; + } + + cp1 = body->s; + + fmtp_payload->s = cp1 + 7; /* skip `a=fmtp:' */ + fmtp_payload->len = eat_line(fmtp_payload->s, body->s + body->len - + fmtp_payload->s) - fmtp_payload->s; + trim_len(fmtp_payload->len, fmtp_payload->s, *fmtp_payload); + len = fmtp_payload->len; + + /* */ + cp = eat_token_end(fmtp_payload->s, fmtp_payload->s + fmtp_payload->len); + fmtp_payload->len = cp - fmtp_payload->s; + if (fmtp_payload->len <= 0 || cp == fmtp_payload->s) { + LM_ERR("no encoding in `a=fmtp:'\n"); + return -1; + } + len -= fmtp_payload->len; + fmtp_string->s = cp; + cp = eat_space_end(fmtp_string->s, fmtp_string->s + len); + len -= cp - fmtp_string->s; + if (len <= 0 || cp == fmtp_string->s) { + LM_ERR("no encoding in `a=fmtp:'\n"); + return -1; + } + + fmtp_string->s = cp; + + fmtp_string->len = eat_line(fmtp_string->s, body->s + body->len - + fmtp_string->s) - fmtp_string->s; + trim_len(fmtp_string->len, fmtp_string->s, *fmtp_string); + + return 0; +} /* generic method for attribute extraction * field must has format "a=attrname:" */ diff --git a/parser/sdp/sdp_helpr_funcs.h b/parser/sdp/sdp_helpr_funcs.h index 0456993..21512e6 100644 --- a/parser/sdp/sdp_helpr_funcs.h +++ b/parser/sdp/sdp_helpr_funcs.h @@ -45,6 +45,7 @@ int get_mixed_part_delimiter(str * body, str * mp_delimiter); int extract_rtpmap(str *body, str *rtpmap_payload, str *rtpmap_encoding, str *rtpmap_clockrate, str *rtpmap_parmas); +int extract_fmtp( str *body, str *fmtp_payload, str *fmtp_string ); int extract_ptime(str *body, str *ptime); int extract_sendrecv_mode(str *body, str *sendrecv_mode); int extract_mediaip(str *body, str *mediaip, int *pf, char *line);