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-rw-r--r--third_party/sipcc/sdp_main.c1374
1 files changed, 1374 insertions, 0 deletions
diff --git a/third_party/sipcc/sdp_main.c b/third_party/sipcc/sdp_main.c
new file mode 100644
index 0000000000..cdc8bf8e0b
--- /dev/null
+++ b/third_party/sipcc/sdp_main.c
@@ -0,0 +1,1374 @@
+/* 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
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#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);
+}