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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "sdp_os_defs.h"
#include "sipcc_sdp.h"
#include "sdp_private.h"
#include "sdp_log.h"
static const char* logTag = "sdp_main";
/* Note: These *must* be in the same order as the enum types. */
const sdp_tokenarray_t sdp_token[SDP_MAX_TOKENS] =
{
{"v=", sdp_parse_version, sdp_build_version },
{"o=", sdp_parse_owner, sdp_build_owner },
{"s=", sdp_parse_sessname, sdp_build_sessname },
{"i=", sdp_parse_sessinfo, sdp_build_sessinfo },
{"u=", sdp_parse_uri, sdp_build_uri },
{"e=", sdp_parse_email, sdp_build_email },
{"p=", sdp_parse_phonenum, sdp_build_phonenum },
{"c=", sdp_parse_connection, sdp_build_connection },
{"b=", sdp_parse_bandwidth, sdp_build_bandwidth },
{"t=", sdp_parse_timespec, sdp_build_timespec },
{"r=", sdp_parse_repeat_time, sdp_build_repeat_time },
{"z=", sdp_parse_timezone_adj, sdp_build_timezone_adj },
{"k=", sdp_parse_encryption, sdp_build_encryption },
{"a=", sdp_parse_attribute, sdp_build_attribute },
{"m=", sdp_parse_media, sdp_build_media }
};
/* Note: These *must* be in the same order as the enum types. */
const sdp_attrarray_t sdp_attr[SDP_MAX_ATTR_TYPES] =
{
{"bearer", sizeof("bearer"),
sdp_parse_attr_simple_string, sdp_build_attr_simple_string },
{"called", sizeof("called"),
sdp_parse_attr_simple_string, sdp_build_attr_simple_string },
{"connection_type", sizeof("connection_type"),
sdp_parse_attr_simple_string, sdp_build_attr_simple_string },
{"dialed", sizeof("dialed"),
sdp_parse_attr_simple_string, sdp_build_attr_simple_string },
{"dialing", sizeof("dialing"),
sdp_parse_attr_simple_string, sdp_build_attr_simple_string },
{"direction", sizeof("direction"),
sdp_parse_attr_comediadir, sdp_build_attr_comediadir },
{"eecid", sizeof("eecid"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"fmtp", sizeof("fmtp"),
sdp_parse_attr_fmtp, sdp_build_attr_fmtp },
{"sctpmap", sizeof("sctpmap"),
sdp_parse_attr_sctpmap, sdp_build_attr_sctpmap },
{"framing", sizeof("framing"),
sdp_parse_attr_simple_string, sdp_build_attr_simple_string },
{"inactive", sizeof("inactive"),
sdp_parse_attr_direction, sdp_build_attr_direction },
{"ptime", sizeof("ptime"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"qos", sizeof("qos"),
sdp_parse_attr_qos, sdp_build_attr_qos },
{"curr", sizeof("curr"),
sdp_parse_attr_curr, sdp_build_attr_curr },
{"des", sizeof("des"),
sdp_parse_attr_des, sdp_build_attr_des},
{"conf", sizeof("conf"),
sdp_parse_attr_conf, sdp_build_attr_conf},
{"recvonly", sizeof("recvonly"),
sdp_parse_attr_direction, sdp_build_attr_direction },
{"rtpmap", sizeof("rtpmap"),
sdp_parse_attr_transport_map, sdp_build_attr_transport_map },
{"secure", sizeof("secure"),
sdp_parse_attr_qos, sdp_build_attr_qos },
{"sendonly", sizeof("sendonly"),
sdp_parse_attr_direction, sdp_build_attr_direction },
{"sendrecv", sizeof("sendrecv"),
sdp_parse_attr_direction, sdp_build_attr_direction },
{"subnet", sizeof("subnet"),
sdp_parse_attr_subnet, sdp_build_attr_subnet },
{"T38FaxVersion", sizeof("T38FaxVersion"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"T38MaxBitRate", sizeof("T38MaxBitRate"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"T38FaxFillBitRemoval", sizeof("T38FaxFillBitRemoval"),
sdp_parse_attr_simple_bool, sdp_build_attr_simple_bool },
{"T38FaxTranscodingMMR", sizeof("T38FaxTranscodingMMR"),
sdp_parse_attr_simple_bool, sdp_build_attr_simple_bool },
{"T38FaxTranscodingJBIG", sizeof("T38FaxTranscodingJBIG"),
sdp_parse_attr_simple_bool, sdp_build_attr_simple_bool },
{"T38FaxRateManagement", sizeof("T38FaxRateManagement"),
sdp_parse_attr_t38_ratemgmt, sdp_build_attr_t38_ratemgmt },
{"T38FaxMaxBuffer", sizeof("T38FaxMaxBuffer"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"T38FaxMaxDatagram", sizeof("T38FaxMaxDatagram"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"T38FaxUdpEC", sizeof("T38FaxUdpEC"),
sdp_parse_attr_t38_udpec, sdp_build_attr_t38_udpec },
{"X-cap", sizeof("X-cap"),
sdp_parse_attr_cap, sdp_build_attr_cap },
{"X-cpar", sizeof("X-cpar"),
sdp_parse_attr_cpar, sdp_build_attr_cpar },
{"X-pc-codec", sizeof("X-pc-codec"),
sdp_parse_attr_pc_codec, sdp_build_attr_pc_codec },
{"X-pc-qos", sizeof("X-pc-qos"),
sdp_parse_attr_qos, sdp_build_attr_qos },
{"X-qos", sizeof("X-qos"),
sdp_parse_attr_qos, sdp_build_attr_qos },
{"X-sqn", sizeof("X-sqn"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"TMRGwXid", sizeof("TMRGwXid"),
sdp_parse_attr_simple_bool, sdp_build_attr_simple_bool },
{"TC1PayloadBytes", sizeof("TC1PayloadBytes"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"TC1WindowSize", sizeof("TC1WindowSize"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"TC2PayloadBytes", sizeof("TC2PayloadBytes"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"TC2WindowSize", sizeof("TC2WindowSize"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"rtcp", sizeof("rtcp"),
sdp_parse_attr_rtcp, sdp_build_attr_rtcp },
{"rtr", sizeof("rtr"),
sdp_parse_attr_rtr, sdp_build_attr_rtr},
{"silenceSupp", sizeof("silenceSupp"),
sdp_parse_attr_silencesupp, sdp_build_attr_silencesupp },
{"X-crypto", sizeof("X-crypto"),
sdp_parse_attr_srtpcontext, sdp_build_attr_srtpcontext },
{"mptime", sizeof("mptime"),
sdp_parse_attr_mptime, sdp_build_attr_mptime },
{"X-sidin", sizeof("X-sidin"),
sdp_parse_attr_x_sidin, sdp_build_attr_x_sidin },
{"X-sidout", sizeof("X-sidout"),
sdp_parse_attr_x_sidout, sdp_build_attr_x_sidout },
{"X-confid", sizeof("X-confid"),
sdp_parse_attr_x_confid, sdp_build_attr_x_confid },
{"group", sizeof("group"),
sdp_parse_attr_group, sdp_build_attr_group },
{"mid", sizeof("mid"),
sdp_parse_attr_simple_string, sdp_build_attr_simple_string },
{"source-filter", sizeof("source-filter"),
sdp_parse_attr_source_filter, sdp_build_source_filter},
{"rtcp-unicast", sizeof("rtcp-unicast"),
sdp_parse_attr_rtcp_unicast, sdp_build_attr_rtcp_unicast},
{"maxprate", sizeof("maxprate"),
sdp_parse_attr_maxprate, sdp_build_attr_simple_string},
{"sqn", sizeof("sqn"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"cdsc", sizeof("cdsc"),
sdp_parse_attr_cap, sdp_build_attr_cap },
{"cpar", sizeof("cpar"),
sdp_parse_attr_cpar, sdp_build_attr_cpar },
{"sprtmap", sizeof("sprtmap"),
sdp_parse_attr_transport_map, sdp_build_attr_transport_map },
{"crypto", sizeof("crypto"),
sdp_parse_attr_sdescriptions, sdp_build_attr_sdescriptions },
{"label", sizeof("label"),
sdp_parse_attr_simple_string, sdp_build_attr_simple_string },
{"framerate", sizeof("framerate"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32 },
{"candidate", sizeof("candidate"),
sdp_parse_attr_ice_attr, sdp_build_attr_ice_attr },
{"ice-ufrag", sizeof("ice-ufrag"),
sdp_parse_attr_ice_attr, sdp_build_attr_ice_attr },
{"ice-pwd", sizeof("ice-pwd"),
sdp_parse_attr_ice_attr, sdp_build_attr_ice_attr},
{"ice-lite", sizeof("ice-lite"),
sdp_parse_attr_simple_flag, sdp_build_attr_simple_flag},
{"rtcp-mux", sizeof("rtcp-mux"),
sdp_parse_attr_simple_flag, sdp_build_attr_simple_flag},
{"fingerprint", sizeof("fingerprint"),
sdp_parse_attr_complete_line, sdp_build_attr_simple_string},
{"maxptime", sizeof("maxptime"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32},
{"rtcp-fb", sizeof("rtcp-fb"),
sdp_parse_attr_rtcp_fb, sdp_build_attr_rtcp_fb},
{"setup", sizeof("setup"),
sdp_parse_attr_setup, sdp_build_attr_setup},
{"connection", sizeof("connection"),
sdp_parse_attr_connection, sdp_build_attr_connection},
{"extmap", sizeof("extmap"),
sdp_parse_attr_extmap, sdp_build_attr_extmap},
{"identity", sizeof("identity"),
sdp_parse_attr_long_line, sdp_build_attr_long_line},
{"msid", sizeof("msid"),
sdp_parse_attr_msid, sdp_build_attr_msid},
{"msid-semantic", sizeof("msid-semantic"),
sdp_parse_attr_msid_semantic, sdp_build_attr_msid_semantic},
{"bundle-only", sizeof("bundle-only"),
sdp_parse_attr_simple_flag, sdp_build_attr_simple_flag},
{"end-of-candidates", sizeof("end-of-candidates"),
sdp_parse_attr_simple_flag, sdp_build_attr_simple_flag},
{"ice-options", sizeof("ice-options"),
sdp_parse_attr_complete_line, sdp_build_attr_simple_string},
{"ssrc", sizeof("ssrc"),
sdp_parse_attr_ssrc, sdp_build_attr_ssrc},
{"imageattr", sizeof("imageattr"),
sdp_parse_attr_complete_line, sdp_build_attr_simple_string},
{"simulcast", sizeof("simulcast"),
sdp_parse_attr_complete_line, sdp_build_attr_simple_string},
{"rid", sizeof("rid"),
sdp_parse_attr_complete_line, sdp_build_attr_simple_string},
{"dtls-message", sizeof("dtls-message"),
sdp_parse_attr_long_line, sdp_build_attr_long_line},
{"sctp-port", sizeof("sctp-port"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32},
{"max-message-size", sizeof("max-message-size"),
sdp_parse_attr_simple_u32, sdp_build_attr_simple_u32},
{"ssrc-group", sizeof("ssrc-group"), sdp_parse_attr_ssrc_group,
sdp_build_attr_ssrc_group},
{"rtcp-rsize", sizeof("rtcp-rsize"),
sdp_parse_attr_simple_flag, sdp_build_attr_simple_flag},
};
/* Note: These *must* be in the same order as the enum types. */
const sdp_namearray_t sdp_media[SDP_MAX_MEDIA_TYPES] =
{
{"audio", sizeof("audio")},
{"video", sizeof("video")},
{"application", sizeof("application")},
{"data", sizeof("data")},
{"control", sizeof("control")},
{"nas/radius", sizeof("nas/radius")},
{"nas/tacacs", sizeof("nas/tacacs")},
{"nas/diameter", sizeof("nas/diameter")},
{"nas/l2tp", sizeof("nas/l2tp")},
{"nas/login", sizeof("nas/login")},
{"nas/none", sizeof("nas/none")},
{"image", sizeof("image")},
{"text", sizeof("text")}
};
/* Note: These *must* be in the same order as the enum types. */
const sdp_namearray_t sdp_nettype[SDP_MAX_NETWORK_TYPES] =
{
{"IN", sizeof("IN")},
{"ATM", sizeof("ATM")},
{"FR", sizeof("FR")},
{"LOCAL", sizeof("LOCAL")}
};
/* Note: These *must* be in the same order as the enum types. */
const sdp_namearray_t sdp_addrtype[SDP_MAX_ADDR_TYPES] =
{
{"IP4", sizeof("IP4")},
{"IP6", sizeof("IP6")},
{"NSAP", sizeof("NSAP")},
{"EPN", sizeof("EPN")},
{"E164", sizeof("E164")},
{"GWID", sizeof("GWID")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_transport[SDP_MAX_TRANSPORT_TYPES] =
{
{"RTP/AVP", sizeof("RTP/AVP")},
{"udp", sizeof("udp")},
{"udptl", sizeof("udptl")},
{"ces10", sizeof("ces10")},
{"LOCAL", sizeof("LOCAL")},
{"AAL2/ITU", sizeof("AAL2/ITU")},
{"AAL2/ATMF", sizeof("AAL2/ATMF")},
{"AAL2/custom", sizeof("AAL2/custom")},
{"AAL1/AVP", sizeof("AAL1/AVP")},
{"udpsprt", sizeof("udpsprt")},
{"RTP/SAVP", sizeof("RTP/SAVP")},
{"tcp", sizeof("tcp")},
{"RTP/SAVPF", sizeof("RTP/SAVPF")},
{"DTLS/SCTP", sizeof("DTLS/SCTP")},
{"RTP/AVPF", sizeof("RTP/AVPF")},
{"UDP/TLS/RTP/SAVP", sizeof("UDP/TLS/RTP/SAVP")},
{"UDP/TLS/RTP/SAVPF", sizeof("UDP/TLS/RTP/SAVPF")},
{"TCP/DTLS/RTP/SAVP", sizeof("TCP/DTLS/RTP/SAVP")},
{"TCP/DTLS/RTP/SAVPF", sizeof("TCP/DTLS/RTP/SAVPF")},
{"UDP/DTLS/SCTP", sizeof("UDP/DTLS/SCTP")},
{"TCP/DTLS/SCTP", sizeof("TCP/DTLS/SCTP")},
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_encrypt[SDP_MAX_ENCRYPT_TYPES] =
{
{"clear", sizeof("clear")},
{"base64", sizeof("base64")},
{"uri", sizeof("uri")},
{"prompt", sizeof("prompt")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_payload[SDP_MAX_STRING_PAYLOAD_TYPES] =
{
{"t38", sizeof("t38")},
{"X-tmr", sizeof("X-tmr")},
{"T120", sizeof("T120")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_t38_rate[SDP_T38_MAX_RATES] =
{
{"localTCF", sizeof("localTCF")},
{"transferredTCF", sizeof("transferredTCF")},
{"unknown", sizeof("unknown")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_t38_udpec[SDP_T38_MAX_UDPEC] =
{
{"t38UDPRedundancy", sizeof("t38UDPRedundancy")},
{"t38UDPFEC", sizeof("t38UDPFEC")},
{"unknown", sizeof("unknown")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_qos_strength[SDP_MAX_QOS_STRENGTH] =
{
{"optional", sizeof("optional")},
{"mandatory", sizeof("mandatory")},
{"success", sizeof("success")},
{"failure", sizeof("failure")},
{"none", sizeof("none")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_qos_status_type[SDP_MAX_QOS_STATUS_TYPES] =
{
{"local", sizeof("local")},
{"remote", sizeof("remote")},
{"e2e", sizeof("e2e")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_curr_type[SDP_MAX_CURR_TYPES] =
{
{"qos", sizeof("qos")},
{"unknown", sizeof("unknown")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_des_type[SDP_MAX_DES_TYPES] =
{
{"qos", sizeof("qos")},
{"unknown", sizeof("unknown")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_conf_type[SDP_MAX_CONF_TYPES] =
{
{"qos", sizeof("qos")},
{"unknown", sizeof("unknown")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_qos_direction[SDP_MAX_QOS_DIR] =
{
{"send", sizeof("send")},
{"recv", sizeof("recv")},
{"sendrecv", sizeof("sendrecv")},
{"none", sizeof("none")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_silencesupp_pref[SDP_MAX_SILENCESUPP_PREF] = {
{"standard", sizeof("standard")},
{"custom", sizeof("custom")},
{"-", sizeof("-")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_silencesupp_siduse[SDP_MAX_SILENCESUPP_SIDUSE] = {
{"No SID", sizeof("No SID")},
{"Fixed Noise", sizeof("Fixed Noise")},
{"Sampled Noise", sizeof("Sampled Noise")},
{"-", sizeof("-")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_mediadir_role[SDP_MAX_MEDIADIR_ROLES] =
{
{"passive", sizeof("passive")},
{"active", sizeof("active")},
{"both", sizeof("both")},
{"reuse", sizeof("reuse")},
{"unknown", sizeof("unknown")}
};
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_fmtp_codec_param[SDP_MAX_FMTP_PARAM] =
{
{"annexa", sizeof("annexa")}, /* 0 */
{"annexb", sizeof("annexb")}, /* 1 */
{"bitrate", sizeof("bitrate")}, /* 2 */
{"QCIF", sizeof("QCIF")}, /* 3 */
{"CIF", sizeof("CIF")}, /* 4 */
{"MAXBR", sizeof("MAXBR")}, /* 5 */
{"SQCIF", sizeof("SQCIF")}, /* 6 */
{"CIF4", sizeof("CIF4")}, /* 7 */
{"CIF16", sizeof("CIF16")}, /* 8 */
{"CUSTOM", sizeof("CUSTOM")}, /* 9 */
{"PAR", sizeof("PAR")}, /* 10 */
{"CPCF", sizeof("CPCF")}, /* 11 */
{"BPP", sizeof("BPP")}, /* 12 */
{"HRD", sizeof("HRD")}, /* 13 */
{"PROFILE", sizeof("PROFILE")}, /* 14 */
{"LEVEL", sizeof("LEVEL")}, /* 15 */
{"INTERLACE", sizeof("INTERLACE")}, /* 16 */
/* H.264 related */
{"profile-level-id", sizeof("profile-level-id")}, /* 17 */
{"sprop-parameter-sets", sizeof("sprop-parameter-sets")}, /* 18 */
{"packetization-mode", sizeof("packetization-mode")}, /* 19 */
{"sprop-interleaving-depth", sizeof("sprop-interleaving-depth")}, /* 20 */
{"sprop-deint-buf-req", sizeof("sprop-deint-buf-req")}, /* 21 */
{"sprop-max-don-diff", sizeof("sprop-max-don-diff")}, /* 22 */
{"sprop-init-buf-time", sizeof("sprop-init-buf-time")}, /* 23 */
{"max-mbps", sizeof("max-mbps")}, /* 24 */
{"max-fs", sizeof("max-fs")}, /* 25 */
{"max-cpb", sizeof("max-cpb")}, /* 26 */
{"max-dpb", sizeof("max-dpb")}, /* 27 */
{"max-br", sizeof("max-br")}, /* 28 */
{"redundant-pic-cap", sizeof("redundant-pic-cap")}, /* 29 */
{"deint-buf-cap", sizeof("deint-buf-cap")}, /* 30 */
{"max-rcmd-nalu-size", sizeof("max-rcmd_nali-size")}, /* 31 */
{"parameter-add", sizeof("parameter-add")}, /* 32 */
/* Annexes - require special handling */
{"D", sizeof("D")}, /* 33 */
{"F", sizeof("F")}, /* 34 */
{"I", sizeof("I")}, /* 35 */
{"J", sizeof("J")}, /* 36 */
{"T", sizeof("T")}, /* 37 */
{"K", sizeof("K")}, /* 38 */
{"N", sizeof("N")}, /* 39 */
{"P", sizeof("P")}, /* 40 */
{"mode", sizeof("mode")}, /* 41 */
{"level-asymmetry-allowed", sizeof("level-asymmetry-allowed")}, /* 42 */
{"maxaveragebitrate", sizeof("maxaveragebitrate")}, /* 43 */
{"usedtx", sizeof("usedtx")}, /* 44 */
{"stereo", sizeof("stereo")}, /* 45 */
{"useinbandfec", sizeof("useinbandfec")}, /* 46 */
{"maxcodedaudiobandwidth", sizeof("maxcodedaudiobandwidth")}, /* 47 */
{"cbr", sizeof("cbr")}, /* 48 */
{"max-fr", sizeof("max-fr")}, /* 49 */
{"maxplaybackrate", sizeof("maxplaybackrate")}, /* 50 */
{"apt", sizeof("apt")}, /* 51 */
{"rtx-time", sizeof("rtx-time")} /* 52 */
} ;
/* Note: These *must* be in the same order as the enum type. */
const sdp_namearray_t sdp_fmtp_codec_param_val[SDP_MAX_FMTP_PARAM_VAL] =
{
{"yes", sizeof("yes")},
{"no", sizeof("no")}
};
const sdp_namearray_t sdp_bw_modifier_val[SDP_MAX_BW_MODIFIER_VAL] =
{
{"AS", sizeof("AS")},
{"CT", sizeof("CT")},
{"TIAS", sizeof("TIAS")}
};
const sdp_namearray_t sdp_group_attr_val[SDP_MAX_GROUP_ATTR_VAL] =
{
{"FID", sizeof("FID")},
{"LS", sizeof("LS")},
{"ANAT", sizeof("ANAT")},
{"BUNDLE", sizeof("BUNDLE")}
};
const sdp_namearray_t sdp_ssrc_group_attr_val[SDP_MAX_SSRC_GROUP_ATTR_VAL] = {
{"DUP", sizeof("DUP")},
{"FEC", sizeof("FEC")},
{"FEC-FR", sizeof("FEC-FR")},
{"FID", sizeof("FID")},
{"SIM", sizeof("SIM")}
};
const sdp_namearray_t sdp_srtp_context_crypto_suite[SDP_SRTP_MAX_NUM_CRYPTO_SUITES] =
{
{"UNKNOWN_CRYPTO_SUITE", sizeof("UNKNOWN_CRYPTO_SUITE")},
{"AES_CM_128_HMAC_SHA1_32", sizeof("AES_CM_128_HMAC_SHA1_32")},
{"AES_CM_128_HMAC_SHA1_80", sizeof("AES_CM_128_HMAC_SHA1_80")},
{"F8_128_HMAC_SHA1_80", sizeof("F8_128_HMAC_SHA1_80")}
};
/* Maintain the same order as defined in typedef sdp_src_filter_mode_e */
const sdp_namearray_t sdp_src_filter_mode_val[SDP_MAX_FILTER_MODE] =
{
{"incl", sizeof("incl")},
{"excl", sizeof("excl")}
};
/* Maintain the same order as defined in typdef sdp_rtcp_unicast_mode_e */
const sdp_namearray_t sdp_rtcp_unicast_mode_val[SDP_RTCP_MAX_UNICAST_MODE] =
{
{"reflection", sizeof("reflection")},
{"rsi", sizeof("rsi")}
};
#define SDP_NAME(x) {x, sizeof(x)}
/* Maintain the same order as defined in typdef sdp_rtcp_fb_type_e */
const sdp_namearray_t sdp_rtcp_fb_type_val[SDP_MAX_RTCP_FB] =
{
SDP_NAME("ack"),
SDP_NAME("ccm"),
SDP_NAME("nack"),
SDP_NAME("trr-int"),
SDP_NAME("goog-remb"),
SDP_NAME("transport-cc")
};
/* Maintain the same order as defined in typdef sdp_rtcp_fb_nack_type_e */
const sdp_namearray_t sdp_rtcp_fb_nack_type_val[SDP_MAX_RTCP_FB_NACK] =
{
SDP_NAME(""),
SDP_NAME("sli"),
SDP_NAME("pli"),
SDP_NAME("rpsi"),
SDP_NAME("app"),
SDP_NAME("rai"),
SDP_NAME("tllei"),
SDP_NAME("pslei"),
SDP_NAME("ecn")
};
/* Maintain the same order as defined in typdef sdp_rtcp_fb_ack_type_e */
const sdp_namearray_t sdp_rtcp_fb_ack_type_val[SDP_MAX_RTCP_FB_ACK] =
{
SDP_NAME("rpsi"),
SDP_NAME("app")
};
/* Maintain the same order as defined in typdef sdp_rtcp_fb_ccm_type_e */
const sdp_namearray_t sdp_rtcp_fb_ccm_type_val[SDP_MAX_RTCP_FB_CCM] =
{
SDP_NAME("fir"),
SDP_NAME("tmmbr"),
SDP_NAME("tstr"),
SDP_NAME("vbcm")
};
/* Maintain the same order as defined in typedef sdp_setup_type_e */
const sdp_namearray_t sdp_setup_type_val[SDP_MAX_SETUP] =
{
SDP_NAME("active"),
SDP_NAME("passive"),
SDP_NAME("actpass"),
SDP_NAME("holdconn")
};
/* Maintain the same order as defined in typedef sdp_connection_type_e */
const sdp_namearray_t sdp_connection_type_val[SDP_MAX_CONNECTION] =
{
SDP_NAME("new"),
SDP_NAME("existing")
};
/* Maintain same order as defined in typedef sdp_srtp_crypto_suite_t */
const sdp_srtp_crypto_suite_list sdp_srtp_crypto_suite_array[SDP_SRTP_MAX_NUM_CRYPTO_SUITES] =
{
{SDP_SRTP_UNKNOWN_CRYPTO_SUITE, UNKNOWN_CRYPTO_SUITE, 0, 0},
{SDP_SRTP_AES_CM_128_HMAC_SHA1_32, AES_CM_128_HMAC_SHA1_32,
SDP_SRTP_AES_CM_128_HMAC_SHA1_32_KEY_BYTES,
SDP_SRTP_AES_CM_128_HMAC_SHA1_32_SALT_BYTES},
{SDP_SRTP_AES_CM_128_HMAC_SHA1_80, AES_CM_128_HMAC_SHA1_80,
SDP_SRTP_AES_CM_128_HMAC_SHA1_80_KEY_BYTES,
SDP_SRTP_AES_CM_128_HMAC_SHA1_80_SALT_BYTES},
{SDP_SRTP_F8_128_HMAC_SHA1_80, F8_128_HMAC_SHA1_80,
SDP_SRTP_F8_128_HMAC_SHA1_80_KEY_BYTES,
SDP_SRTP_F8_128_HMAC_SHA1_80_SALT_BYTES}
};
const char* sdp_result_name[SDP_MAX_RC] =
{"SDP_SUCCESS",
"SDP_FAILURE",
"SDP_INVALID_SDP_PTR",
"SDP_NOT_SDP_DESCRIPTION",
"SDP_INVALID_TOKEN_ORDERING",
"SDP_INVALID_PARAMETER",
"SDP_INVALID_MEDIA_LEVEL",
"SDP_INVALID_CAPABILITY",
"SDP_NO_RESOURCE",
"SDP_UNRECOGNIZED_TOKEN",
"SDP_NULL_BUF_PTR",
"SDP_POTENTIAL_SDP_OVERFLOW",
"SDP_EMPTY_TOKEN"};
const char *sdp_get_result_name ( sdp_result_e rc )
{
if (rc >= SDP_MAX_RC) {
return ("Invalid SDP result code");
} else {
return (sdp_result_name[rc]);
}
}
const char *sdp_get_attr_name ( sdp_attr_e attr_type )
{
if (attr_type >= SDP_MAX_ATTR_TYPES) {
return ("Invalid attribute type");
} else {
return (sdp_attr[attr_type].name);
}
}
const char *sdp_get_media_name ( sdp_media_e media_type )
{
if (media_type == SDP_MEDIA_UNSUPPORTED) {
return (SDP_UNSUPPORTED);
} else if (media_type >= SDP_MAX_MEDIA_TYPES) {
return ("Invalid media type");
} else {
return (sdp_media[media_type].name);
}
}
const char *sdp_get_network_name ( sdp_nettype_e network_type )
{
if (network_type == SDP_NT_UNSUPPORTED) {
return (SDP_UNSUPPORTED);
} else if (network_type >= SDP_MAX_NETWORK_TYPES) {
return ("Invalid network type");
} else {
return (sdp_nettype[network_type].name);
}
}
const char *sdp_get_address_name ( sdp_addrtype_e addr_type )
{
if (addr_type == SDP_AT_UNSUPPORTED) {
return (SDP_UNSUPPORTED);
} else if (addr_type >= SDP_MAX_ADDR_TYPES) {
if (addr_type == SDP_AT_FQDN) {
return ("*");
} else {
return ("Invalid address type");
}
} else {
return (sdp_addrtype[addr_type].name);
}
}
const char *sdp_get_transport_name ( sdp_transport_e transport_type )
{
if (transport_type == SDP_TRANSPORT_UNSUPPORTED) {
return (SDP_UNSUPPORTED);
} else if (transport_type >= SDP_MAX_TRANSPORT_TYPES) {
return ("Invalid transport type");
} else {
return (sdp_transport[transport_type].name);
}
}
const char *sdp_get_encrypt_name ( sdp_encrypt_type_e encrypt_type )
{
if (encrypt_type == SDP_ENCRYPT_UNSUPPORTED) {
return (SDP_UNSUPPORTED);
} else if (encrypt_type >= SDP_MAX_ENCRYPT_TYPES) {
return ("Invalid encryption type");
} else {
return (sdp_encrypt[encrypt_type].name);
}
}
const char *sdp_get_payload_name ( sdp_payload_e payload )
{
if (payload == SDP_PAYLOAD_UNSUPPORTED) {
return (SDP_UNSUPPORTED);
} else if (payload >= SDP_MAX_STRING_PAYLOAD_TYPES) {
return ("Invalid payload type");
} else {
return (sdp_payload[payload].name);
}
}
const char *sdp_get_t38_ratemgmt_name ( sdp_t38_ratemgmt_e rate )
{
if (rate >= SDP_T38_MAX_RATES) {
return ("Invalid rate");
} else {
return (sdp_t38_rate[rate].name);
}
}
const char *sdp_get_t38_udpec_name ( sdp_t38_udpec_e udpec )
{
if (udpec >= SDP_T38_MAX_UDPEC) {
return ("Invalid udpec");
} else {
return (sdp_t38_udpec[udpec].name);
}
}
const char *sdp_get_qos_strength_name ( sdp_qos_strength_e strength )
{
if (strength >= SDP_MAX_QOS_STRENGTH) {
return ("Invalid qos strength");
} else {
return (sdp_qos_strength[strength].name);
}
}
const char *sdp_get_qos_direction_name ( sdp_qos_dir_e direction )
{
if (direction >= SDP_MAX_QOS_DIR) {
return ("Invalid qos direction");
} else {
return (sdp_qos_direction[direction].name);
}
}
const char *sdp_get_qos_status_type_name ( sdp_qos_status_types_e status_type )
{
if (status_type >= SDP_MAX_QOS_STATUS_TYPES) {
return ("Invalid qos status type");
} else {
return (sdp_qos_status_type[status_type].name);
}
}
const char *sdp_get_curr_type_name (sdp_curr_type_e curr_type )
{
if (curr_type >= SDP_MAX_CURR_TYPES) {
return ("Invalid curr type");
} else {
return (sdp_curr_type[curr_type].name);
}
}
const char *sdp_get_des_type_name (sdp_des_type_e des_type )
{
if (des_type >= SDP_MAX_DES_TYPES) {
return ("Invalid des type");
} else {
return (sdp_des_type[des_type].name);
}
}
const char *sdp_get_conf_type_name (sdp_conf_type_e conf_type )
{
if (conf_type >= SDP_MAX_CONF_TYPES) {
return ("Invalid conf type");
} else {
return (sdp_conf_type[conf_type].name);
}
}
const char *sdp_get_silencesupp_pref_name (sdp_silencesupp_pref_e pref)
{
if (pref >= SDP_MAX_SILENCESUPP_PREF) {
return ("Invalid silencesupp pref");
} else {
return (sdp_silencesupp_pref[pref].name);
}
}
const char *sdp_get_silencesupp_siduse_name (sdp_silencesupp_siduse_e siduse)
{
if (siduse >= SDP_MAX_SILENCESUPP_SIDUSE) {
return ("Invalid silencesupp siduse");
} else {
return (sdp_silencesupp_siduse[siduse].name);
}
}
const char *sdp_get_mediadir_role_name (sdp_mediadir_role_e role)
{
if (role >= SDP_MEDIADIR_ROLE_UNKNOWN) {
return ("Invalid media direction role");
} else {
return (sdp_mediadir_role[role].name);
}
}
const char *sdp_get_bw_modifier_name (sdp_bw_modifier_e bw_modifier_type)
{
if (bw_modifier_type == SDP_BW_MODIFIER_UNSUPPORTED) {
return (SDP_UNSUPPORTED);
} else if (bw_modifier_type < SDP_BW_MODIFIER_AS ||
bw_modifier_type >= SDP_MAX_BW_MODIFIER_VAL) {
return ("Invalid bw modifier type");
} else {
return (sdp_bw_modifier_val[bw_modifier_type].name);
}
}
const char *sdp_get_group_attr_name (sdp_group_attr_e group_attr_type)
{
if (group_attr_type == SDP_GROUP_ATTR_UNSUPPORTED) {
return (SDP_UNSUPPORTED);
} else if (group_attr_type >= SDP_MAX_GROUP_ATTR_VAL) {
return ("Invalid a=group: attribute type");
} else {
return (sdp_group_attr_val[group_attr_type].name);
}
}
const char *sdp_get_ssrc_group_attr_name(
sdp_ssrc_group_attr_e ssrc_group_attr_type) {
if (ssrc_group_attr_type == SDP_SSRC_GROUP_ATTR_UNSUPPORTED) {
return (SDP_UNSUPPORTED);
} else if (ssrc_group_attr_type >= SDP_MAX_SSRC_GROUP_ATTR_VAL) {
return ("Invalid a=ssrc-group: attribute type");
} else {
return (sdp_ssrc_group_attr_val[ssrc_group_attr_type].name);
}
}
const char *sdp_get_src_filter_mode_name (sdp_src_filter_mode_e type)
{
if (type >= SDP_MAX_FILTER_MODE) {
return ("Invalid source filter mode");
} else {
return (sdp_src_filter_mode_val[type].name);
}
}
const char *sdp_get_rtcp_unicast_mode_name (sdp_rtcp_unicast_mode_e type)
{
if (type >= SDP_RTCP_MAX_UNICAST_MODE) {
return ("Invalid rtcp unicast mode");
} else {
return (sdp_rtcp_unicast_mode_val[type].name);
}
}
/* Function: sdp_init_description
* Description: Allocates a new SDP structure that can be used for either
* parsing or building an SDP description. This routine
* saves the config pointer passed in the SDP structure so
* SDP will know how to parse/build based on the options defined.
* An SDP structure must be allocated before parsing or building
* since the handle must be passed to these routines.
* Parameters: config_p The config handle returned by sdp_init_config
* Returns: A handle for a new SDP structure as a void ptr.
*/
sdp_t *sdp_init_description (sdp_conf_options_t *conf_p)
{
int i;
sdp_t *sdp_p;
if (!conf_p) {
return (NULL);
}
sdp_p = (sdp_t *)SDP_MALLOC(sizeof(sdp_t));
if (sdp_p == NULL) {
return (NULL);
}
sdp_p->conf_p = conf_p;
sdp_p->version = SDP_CURRENT_VERSION;
sdp_p->owner_name[0] = '\0';
sdp_p->owner_sessid[0] = '\0';
sdp_p->owner_version[0] = '\0';
sdp_p->owner_network_type = SDP_NT_INVALID;
sdp_p->owner_addr_type = SDP_AT_INVALID;
sdp_p->owner_addr[0] = '\0';
sdp_p->sessname[0] = '\0';
sdp_p->sessinfo_found = FALSE;
sdp_p->uri_found = FALSE;
sdp_p->default_conn.nettype = SDP_NT_INVALID;
sdp_p->default_conn.addrtype = SDP_AT_INVALID;
sdp_p->default_conn.conn_addr[0] = '\0';
sdp_p->default_conn.is_multicast = FALSE;
sdp_p->default_conn.ttl = 0;
sdp_p->default_conn.num_of_addresses = 0;
sdp_p->bw.bw_data_count = 0;
sdp_p->bw.bw_data_list = NULL;
sdp_p->timespec_p = NULL;
sdp_p->sess_attrs_p = NULL;
sdp_p->mca_p = NULL;
sdp_p->mca_count = 0;
/* Set default debug flags from application config. */
for (i=0; i < SDP_MAX_DEBUG_TYPES; i++) {
sdp_p->debug_flag[i] = conf_p->debug_flag[i];
}
return (sdp_p);
}
/* Function: void sdp_debug(sdp_t *sdp_p, sdp_debug_e debug_type,
* tinybool my_bool);
* Description: Define the type of debug for this particular SDP structure.
* By default, each SDP description has the settings that are
* set for the application.
* Valid debug types are ERRORS, WARNINGS, and TRACE. Each
* debug type can be turned on/off individually. The
* debug level can be redefined at any time.
* Parameters: sdp_ptr The SDP handle returned by sdp_init_description.
* debug_type Specifies the debug type being enabled/disabled.
* my_bool Defines whether the debug should be enabled or not.
* Returns: Nothing.
*/
void sdp_debug (sdp_t *sdp_p, sdp_debug_e debug_type, tinybool debug_flag)
{
if (!sdp_p) {
return;
}
if (debug_type < SDP_MAX_DEBUG_TYPES) {
sdp_p->debug_flag[debug_type] = debug_flag;
}
}
/* Function: void sdp_set_string_debug(sdp_t *sdp_p, char *debug_str)
* Description: Define a string to be associated with all debug output
* for this SDP. The string will be copied into the SDP
* structure and so the library will not be dependent on
* the application's memory for this string.
* Parameters: sdp_p The SDP handle returned by sdp_init_description.
* debug_str Pointer to a string that should be printed out
* with every debug msg.
* Returns: Nothing.
*/
void sdp_set_string_debug (sdp_t *sdp_p, const char *debug_str)
{
if (!sdp_p) {
return;
}
sstrncpy(sdp_p->debug_str, debug_str, sizeof(sdp_p->debug_str));
}
/* Function: sdp_validate_sdp
* Description: Validate an SDP structure.
* Parameters: sdp_p The SDP handle of the struct to validate.
* Returns: A result value indicating if the validation was successful.
* If not, what type of error was encountered.
*/
sdp_result_e sdp_validate_sdp (sdp_t *sdp_p)
{
int i;
uint16_t num_media_levels;
/* Need to validate c= info is specified at session level or
* at all m= levels.
*/
if (sdp_connection_valid((void *)sdp_p, SDP_SESSION_LEVEL) == FALSE) {
num_media_levels = sdp_get_num_media_lines((void *)sdp_p);
for (i=1; i <= num_media_levels; i++) {
if (sdp_connection_valid((void *)sdp_p, (unsigned short)i) == FALSE) {
sdp_parse_error(sdp_p,
"%s c= connection line not specified for "
"every media level, validation failed.",
sdp_p->debug_str);
return (SDP_FAILURE);
}
}
}
/* Validate required lines were specified */
if ((sdp_owner_valid((void *)sdp_p) == FALSE) &&
(sdp_p->conf_p->owner_reqd == TRUE)) {
sdp_parse_error(sdp_p,
"%s o= owner line not specified, validation failed.",
sdp_p->debug_str);
return (SDP_FAILURE);
}
if ((sdp_session_name_valid((void *)sdp_p) == FALSE) &&
(sdp_p->conf_p->session_name_reqd == TRUE)) {
sdp_parse_error(sdp_p,
"%s s= session name line not specified, validation failed.",
sdp_p->debug_str);
return (SDP_FAILURE);
}
if ((sdp_timespec_valid((void *)sdp_p) == FALSE) &&
(sdp_p->conf_p->timespec_reqd == TRUE)) {
sdp_parse_error(sdp_p,
"%s t= timespec line not specified, validation failed.",
sdp_p->debug_str);
return (SDP_FAILURE);
}
return (SDP_SUCCESS);
}
/* Function: sdp_parse
* Description: Parse an SDP description in the specified buffer.
* Parameters: sdp_p The SDP handle returned by sdp_init_description
* bufp Pointer to the buffer containing the SDP
* description to parse.
* len The length of the buffer.
* Returns: A result value indicating if the parse was successful and
* if not, what type of error was encountered. The
* information from the parse is stored in the sdp_p structure.
*/
sdp_result_e sdp_parse (sdp_t *sdp_p, const char *buf, size_t len)
{
uint8_t i;
uint16_t cur_level = SDP_SESSION_LEVEL;
const char *ptr;
const char *next_ptr = NULL;
char *line_end;
sdp_token_e last_token = SDP_TOKEN_V;
sdp_result_e result = SDP_SUCCESS;
tinybool parse_done = FALSE;
tinybool end_found = FALSE;
tinybool first_line = TRUE;
tinybool unrec_token = FALSE;
const char **bufp = &buf;
if (!sdp_p) {
return (SDP_INVALID_SDP_PTR);
}
if ((bufp == NULL) || (*bufp == NULL)) {
return (SDP_NULL_BUF_PTR);
}
if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) {
SDP_PRINT("%s Trace SDP Parse:", sdp_p->debug_str);
}
next_ptr = *bufp;
sdp_p->conf_p->num_parses++;
/* Initialize the last valid capability instance to zero. Used
* to help in parsing X-cpar attrs. */
sdp_p->cap_valid = FALSE;
sdp_p->last_cap_inst = 0;
sdp_p->parse_line = 0;
/* We want to try to find the end of the SDP description, even if
* we find a parsing error.
*/
while (!end_found) {
/* If the last char of this line goes beyond the end of the buffer,
* we don't parse it.
*/
ptr = next_ptr;
sdp_p->parse_line++;
line_end = sdp_findchar(ptr, "\n");
if ((line_end >= (*bufp + len)) ||
(*line_end == '\0')) {
/* As this does not update the result value the SDP up to this point
* is still accept as valid. So encountering this is not treated as
* an error.
*/
sdp_parse_error(sdp_p,
"%s End of line beyond end of buffer.",
sdp_p->debug_str);
SDPLogError(logTag, "SDP: Invalid SDP, no \\n (len %u): %*s",
(unsigned)len, (int)len, *bufp);
end_found = TRUE;
break;
}
/* Print the line if we're tracing. */
if ((parse_done == FALSE) &&
(sdp_p->debug_flag[SDP_DEBUG_TRACE])) {
SDP_PRINT("%s ", sdp_p->debug_str);
SDP_PRINT("%*s", (int)(line_end - ptr), ptr);
}
/* Find out which token this line has, if any. */
for (i=0; i < SDP_MAX_TOKENS; i++) {
if (strncmp(ptr, sdp_token[i].name, SDP_TOKEN_LEN) == 0) {
break;
}
}
if (i == SDP_MAX_TOKENS) {
/* See if the second char on the next line is an '=' char.
* If so, we note this as an unrecognized token line. */
if (ptr[1] == '=') {
unrec_token = TRUE;
}
if (first_line == TRUE) {
sdp_parse_error(sdp_p,
"%s Attempt to parse text not recognized as "
"SDP text, parse fails.", sdp_p->debug_str);
/* If we haven't already printed out the line we
* were trying to parse, do it now.
*/
if (!sdp_p->debug_flag[SDP_DEBUG_TRACE]) {
SDP_PRINT("%s ", sdp_p->debug_str);
SDP_PRINT("%*s", (int)(line_end - ptr), ptr);
}
sdp_p->conf_p->num_not_sdp_desc++;
return (SDP_NOT_SDP_DESCRIPTION);
} else {
end_found = TRUE;
break;
}
}
/* This is the beginning of a new SDP description. */
if ((first_line != TRUE) && (i == SDP_TOKEN_V)) {
end_found = TRUE;
break;
}
/* Advance the next ptr to one char beyond the end of the line. */
next_ptr = line_end + 1;
if (next_ptr >= (*bufp + len)) {
end_found = TRUE;
}
/* If we've finished parsing and are just looking for the end of
* the SDP description, we don't need to do anything else here.
*/
if (parse_done == TRUE) {
continue;
}
/* Only certain tokens are valid at the media level. */
if (cur_level != SDP_SESSION_LEVEL) {
if ((i != SDP_TOKEN_I) && (i != SDP_TOKEN_C) &&
(i != SDP_TOKEN_B) && (i != SDP_TOKEN_K) &&
(i != SDP_TOKEN_A) && (i != SDP_TOKEN_M)) {
sdp_p->conf_p->num_invalid_token_order++;
sdp_parse_error(sdp_p,
"%s Warning: Invalid token %s found at media level",
sdp_p->debug_str, sdp_token[i].name);
continue;
}
}
/* Verify the token ordering. */
if (first_line == TRUE) {
if (i != SDP_TOKEN_V) {
if (sdp_p->conf_p->version_reqd == TRUE) {
sdp_parse_error(sdp_p,
"%s First line not v=, parse fails",
sdp_p->debug_str);
sdp_p->conf_p->num_invalid_token_order++;
result = SDP_INVALID_TOKEN_ORDERING;
parse_done = TRUE;
} else {
last_token = (sdp_token_e)i;
}
} else {
last_token = (sdp_token_e)i;
}
first_line = FALSE;
} else {
if (i < last_token) {
sdp_p->conf_p->num_invalid_token_order++;
sdp_parse_error(sdp_p,
"%s Warning: Invalid token ordering detected, "
"token %s found after token %s", sdp_p->debug_str,
sdp_token[i].name, sdp_token[last_token].name);
}
}
/* Finally parse the line. */
ptr += SDP_TOKEN_LEN;
result = sdp_token[i].parse_func(sdp_p, cur_level, (const char *)ptr);
last_token = (sdp_token_e)i;
if (last_token == SDP_TOKEN_M) {
if (cur_level == SDP_SESSION_LEVEL) {
cur_level = 1;
} else {
cur_level++;
}
/* The token ordering can start again at i= */
last_token = (sdp_token_e)(SDP_TOKEN_I - 1);
}
if (result != SDP_SUCCESS) {
parse_done = TRUE;
}
/* Skip the new line char at the end of this line and see if
* this is the end of the buffer.
*/
if ((line_end + 1) == (*bufp + len)) {
end_found = TRUE;
}
}
/* If we found no valid lines, return an error. */
if (first_line == TRUE) {
sdp_p->conf_p->num_not_sdp_desc++;
return (SDP_NOT_SDP_DESCRIPTION);
}
/* If no errors were found yet, validate the overall sdp. */
if (result == SDP_SUCCESS) {
result = sdp_validate_sdp(sdp_p);
}
/* Return the pointer where we left off. */
*bufp = next_ptr;
/* If the SDP is valid, but the next line following was an
* unrecognized <token>= line, indicate this on the return. */
if ((result == SDP_SUCCESS) && (unrec_token == TRUE)) {
return (SDP_UNRECOGNIZED_TOKEN);
} else {
return (result);
}
}
/* Function: sdp_build
* Description: Build an SDP description in the specified buffer based
* on the information in the given SDP structure.
* Parameters: sdp_p The SDP handle returned by sdp_init_description
* fs A flex_string where the SDP description should be built.
* Returns: A result value indicating if the build was successful and
* if not, what type of error was encountered - e.g.,
* description was too long for the given buffer.
*/
sdp_result_e sdp_build (sdp_t *sdp_p, flex_string *fs)
{
int i, j;
sdp_result_e result = SDP_SUCCESS;
if (!sdp_p) {
return (SDP_INVALID_SDP_PTR);
}
if (!fs) {
return (SDP_NULL_BUF_PTR);
}
if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) {
SDP_PRINT("%s Trace SDP Build:", sdp_p->debug_str);
}
sdp_p->conf_p->num_builds++;
for (i=0; ((i < SDP_TOKEN_M) &&
(result == SDP_SUCCESS)); i++) {
result = sdp_token[i].build_func(sdp_p, SDP_SESSION_LEVEL, fs);
/* ok not to check buffer space (yet) as the if() checks it */
}
/* If the session level was ok, build the media lines. */
if (result == SDP_SUCCESS) {
for (i=1; ((i <= sdp_p->mca_count) &&
(result == SDP_SUCCESS)); i++) {
result = sdp_token[SDP_TOKEN_M].build_func(sdp_p, (uint16_t)i, fs);
/* ok not to check buffer space (yet) as the for() checks it */
for (j=SDP_TOKEN_I;
((j < SDP_TOKEN_M) && (result == SDP_SUCCESS));
j++) {
if ((j == SDP_TOKEN_U) || (j == SDP_TOKEN_E) ||
(j == SDP_TOKEN_P) || (j == SDP_TOKEN_T) ||
(j == SDP_TOKEN_R) || (j == SDP_TOKEN_Z)) {
/* These tokens not valid at media level. */
continue;
}
result = sdp_token[j].build_func(sdp_p, (uint16_t)i, fs);
/* ok not to check buffer space (yet) as the for() checks it */
}
}
}
return (result);
}
/* Function: sdp_free_description
* Description: Free an SDP description and all memory associated with it.
* Parameters: sdp_p The SDP handle returned by sdp_init_description
* Returns: A result value indicating if the free was successful and
* if not, what type of error was encountered - e.g., sdp_p
* was invalid and didn't point to an SDP structure.
*/
sdp_result_e sdp_free_description (sdp_t *sdp_p)
{
sdp_timespec_t *time_p, *next_time_p;
sdp_attr_t *attr_p, *next_attr_p;
sdp_mca_t *mca_p, *next_mca_p;
sdp_bw_t *bw_p;
sdp_bw_data_t *bw_data_p;
if (!sdp_p) {
return (SDP_INVALID_SDP_PTR);
}
/* Free the config structure */
sdp_free_config(sdp_p->conf_p);
/* Free any timespec structures - should be only one since
* this is all we currently support.
*/
time_p = sdp_p->timespec_p;
while (time_p != NULL) {
next_time_p = time_p->next_p;
SDP_FREE(time_p);
time_p = next_time_p;
}
bw_p = &(sdp_p->bw);
bw_data_p = bw_p->bw_data_list;
while (bw_data_p != NULL) {
bw_p->bw_data_list = bw_data_p->next_p;
SDP_FREE(bw_data_p);
bw_data_p = bw_p->bw_data_list;
}
/* Free any session attr structures */
attr_p = sdp_p->sess_attrs_p;
while (attr_p != NULL) {
next_attr_p = attr_p->next_p;
sdp_free_attr(attr_p);
attr_p = next_attr_p;
}
/* Free any mca structures */
mca_p = sdp_p->mca_p;
while (mca_p != NULL) {
next_mca_p = mca_p->next_p;
/* Free any media attr structures */
attr_p = mca_p->media_attrs_p;
while (attr_p != NULL) {
next_attr_p = attr_p->next_p;
sdp_free_attr(attr_p);
attr_p = next_attr_p;
}
/* Free the media profiles struct if allocated. */
if (mca_p->media_profiles_p != NULL) {
SDP_FREE(mca_p->media_profiles_p);
}
bw_p = &(mca_p->bw);
bw_data_p = bw_p->bw_data_list;
while (bw_data_p != NULL) {
bw_p->bw_data_list = bw_data_p->next_p;
SDP_FREE(bw_data_p);
bw_data_p = bw_p->bw_data_list;
}
SDP_FREE(mca_p);
mca_p = next_mca_p;
}
SDP_FREE(sdp_p);
return (SDP_SUCCESS);
}
/*
* sdp_parse_error
* Send SDP parsing errors to log and up to peerconnection
*/
void sdp_parse_error(sdp_t* sdp, const char *format, ...) {
flex_string fs;
va_list ap;
flex_string_init(&fs);
va_start(ap, format);
flex_string_vsprintf(&fs, format, ap);
va_end(ap);
SDPLogError("SDP Parse", "SDP Parse Error %s, line %u", fs.buffer,
sdp->parse_line);
if (sdp->conf_p->error_handler) {
sdp->conf_p->error_handler(sdp->conf_p->error_handler_context,
sdp->parse_line,
fs.buffer);
}
flex_string_free(&fs);
}