2240 lines
76 KiB
C
2240 lines
76 KiB
C
/*
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* Copyright (C) 2012-2013 Doubango Telecom <http://www.doubango.org>
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* Copyright (C) 2012 Diop Mamadou Ibrahima
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*
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* This file is part of Open Source Doubango Framework.
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*
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* DOUBANGO is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* DOUBANGO is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with DOUBANGO.
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*
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*/
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/**@file tdav_session_av.c
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* @brief Audio/Video/T.140 base Session plugin
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*/
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// http://c-faq.com/ansi/constmismatch.html: to be checked for warnings
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#include "tinydav/tdav_session_av.h"
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#include "tinydav/codecs/dtmf/tdav_codec_dtmf.h"
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#include "tinydav/codecs/fec/tdav_codec_red.h"
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#include "tinydav/codecs/fec/tdav_codec_ulpfec.h"
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#include "tinysdp/headers/tsdp_header_S.h"
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#include "tinyrtp/trtp_manager.h"
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#include "tinyrtp/rtp/trtp_rtp_packet.h"
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#include "ice/tnet_ice_ctx.h"
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#include "ice/tnet_ice_candidate.h"
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#include "tinymedia/tmedia_consumer.h"
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#include "tinymedia/tmedia_producer.h"
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#include "tinymedia/tmedia_defaults.h"
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#include "tls/tnet_tls.h"
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#include "tls/tnet_dtls.h"
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#include <math.h> /* log10 */
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#include <limits.h> /* INT_MAX */
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#if HAVE_SRTP
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static const tsk_bool_t __have_libsrtp = tsk_true;
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#else
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static const tsk_bool_t __have_libsrtp = tsk_false;
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#endif
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#define TDAV_IS_DTMF_CODEC(codec) (codec && TMEDIA_CODEC((codec))->plugin == tdav_codec_dtmf_plugin_def_t)
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#define TDAV_IS_ULPFEC_CODEC(codec) (codec && TMEDIA_CODEC((codec))->plugin == tdav_codec_ulpfec_plugin_def_t)
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#define TDAV_IS_RED_CODEC(codec) (codec && TMEDIA_CODEC((codec))->plugin == tdav_codec_red_plugin_def_t)
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#define TDAV_IS_VIDEO_CODEC(codec) (codec && TMEDIA_CODEC((codec))->plugin->type == tmedia_video)
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#if !defined(TDAV_DFAULT_FP_HASH)
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#define TDAV_DFAULT_FP_HASH tnet_dtls_hash_type_sha256
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#endif /* TDAV_DFAULT_FP_HASH */
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#if !defined(TDAV_FIXME_MEDIA_LEVEL_DTLS_ATT)
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#define TDAV_FIXME_MEDIA_LEVEL_DTLS_ATT 0
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#endif /* TDAV_FIXME_MEDIA_LEVEL_DTLS_ATT */
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static void* TSK_STDCALL _tdav_session_av_error_async_thread(void* usrdata);
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static int _tdav_session_av_raise_error_async(struct tdav_session_av_s* self, tsk_bool_t is_fatal, const char* reason);
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#if HAVE_SRTP
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static int _tdav_session_av_srtp_dtls_cb(const void* usrdata, enum trtp_srtp_dtls_event_type_e type, const char* reason);
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#endif /* HAVE_SRTP */
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static int _tdav_session_av_red_cb(const void* usrdata, const struct trtp_rtp_packet_s* packet);
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static int _tdav_session_av_dtls_set_remote_setup(struct tdav_session_av_s* self, tnet_dtls_setup_t setup, tsk_bool_t connection_new);
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#define SDP_CAPS_COUNT_MAX 0x1F
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#define SDP_DECLARE_TAG int32_t tag // [1 - *]
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#define SDP_TAG(self) ((self) ? *((int32_t*)(self)) : 0)
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typedef enum RTP_PROFILE_E
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{
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RTP_PROFILE_NONE = 0x00,
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RTP_PROFILE_AVP = (1 << 0),
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RTP_PROFILE_AVPF = (1 << 1),
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RTP_PROFILE_SECURE = (1 << 2),
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RTP_PROFILE_SECURE_SDES = (RTP_PROFILE_SECURE | (1 << 3)),
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RTP_PROFILE_SECURE_DTLS = (RTP_PROFILE_SECURE | (1 << 4)),
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RTP_PROFILE_SAVP = (RTP_PROFILE_AVP | RTP_PROFILE_SECURE_SDES),
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RTP_PROFILE_SAVPF = (RTP_PROFILE_AVPF | RTP_PROFILE_SECURE_SDES),
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RTP_PROFILE_UDP_TLS_RTP_SAVP = (RTP_PROFILE_AVP | RTP_PROFILE_SECURE_DTLS),
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RTP_PROFILE_UDP_TLS_RTP_SAVPF = (RTP_PROFILE_AVPF | RTP_PROFILE_SECURE_DTLS)
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}
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RTP_PROFILE_T;
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typedef struct RTP_PROFILE_XS
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{
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enum RTP_PROFILE_E type;
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const char* name;
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}
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RTP_PROFILE_XT;
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static const RTP_PROFILE_XT RTP_PROFILES[] =
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{
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{ RTP_PROFILE_AVP, "RTP/AVP" },
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{ RTP_PROFILE_AVPF, "RTP/AVPF" },
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{ RTP_PROFILE_SAVP, "RTP/SAVP" },
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{ RTP_PROFILE_SAVPF, "RTP/SAVPF" },
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{ RTP_PROFILE_UDP_TLS_RTP_SAVP, "UDP/TLS/RTP/SAVP" },
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{ RTP_PROFILE_UDP_TLS_RTP_SAVPF, "UDP/TLS/RTP/SAVPF" },
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};
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#define RTP_PROFILES_COUNT (sizeof(RTP_PROFILES) / sizeof(RTP_PROFILES[0]))
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typedef struct sdp_acap_xs
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{
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SDP_DECLARE_TAG;
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unsigned optional:1; // "e.g. [2]"
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unsigned or:1; // "e.g.|2"
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const char* value;
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}
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sdp_acap_xt;
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typedef sdp_acap_xt sdp_acaps_xt[SDP_CAPS_COUNT_MAX];
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typedef struct sdp_tcap_xs
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{
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SDP_DECLARE_TAG;
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RTP_PROFILE_T profile;
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}
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sdp_tcap_xt;
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typedef sdp_tcap_xt sdp_tcaps_xt[SDP_CAPS_COUNT_MAX];
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typedef struct sdp_pcfg_xs
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{
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SDP_DECLARE_TAG;
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sdp_tcap_xt tcap;
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sdp_acaps_xt acaps;
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}
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sdp_pcfg_xt;
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typedef sdp_pcfg_xt sdp_acfg_xt;
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typedef sdp_pcfg_xt sdp_pcfgs_xt[SDP_CAPS_COUNT_MAX];
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typedef tsk_object_t sdp_headerM_Or_Message; /* tsdp_header_M_t or tsdp_message_t */
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#define _sdp_reset(self) if((self)) memset((self), 0, sizeof(*(self)));
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#define _sdp_pcfgs_reset(self) _sdp_reset((self))
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#define _sdp_acfgs_reset(self) _sdp_reset((self))
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#define _sdp_pcfg_reset(self) _sdp_reset((self))
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#define _sdp_acfg_reset(self) _sdp_reset((self))
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#define _sdp_tcaps_reset(self) _sdp_reset((self))
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#define _sdp_acaps_reset(self) _sdp_reset((self))
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#define _sdp_integer_length(self) ((self) ? ((int32_t)log10(abs(self)) + 1) : 1)
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#define _sdp_str_index_of(str, sub_str) tsk_strindexOf((str), tsk_strlen((str)), sub_str)
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#define _sdp_str_starts_with(str, sub_str) (_sdp_str_index_of((str), (sub_str)) == 0)
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#define _sdp_str_contains(str, sub_str) (_sdp_str_index_of((str), (sub_str)) != -1)
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#define _SDP_DECLARE_INDEX_OF(name) \
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static int32_t _sdp_##name##s_indexof(const sdp_##name##_xt (*name##s)[SDP_CAPS_COUNT_MAX], int32_t tag) \
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{ \
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if(name##s){ \
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int32_t i; \
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for(i = 0; i < SDP_CAPS_COUNT_MAX; ++i){ \
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if((*name##s)[i].tag == tag){ \
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return i; \
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} \
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} \
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} \
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return -1; \
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}
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typedef struct tdav_sdp_caps_s
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{
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TSK_DECLARE_OBJECT;
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sdp_pcfgs_xt local;
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sdp_pcfgs_xt remote;
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sdp_acfg_xt acfg;
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}
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tdav_sdp_caps_t;
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static tdav_sdp_caps_t* tdav_sdp_caps_create();
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static const tsdp_header_A_t* _sdp_findA_at(const sdp_headerM_Or_Message* sdp, const char* field, tsk_size_t index);
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static int _sdp_add_headerA(sdp_headerM_Or_Message* sdp, const char* field, const char* value);
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static RTP_PROFILE_T _sdp_profile_from_string(const char* profile);
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static const char* _sdp_profile_to_string(RTP_PROFILE_T profile);
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static int32_t _sdp_acaps_indexof(const sdp_acap_xt (*acaps)[SDP_CAPS_COUNT_MAX], int32_t tag);
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static const sdp_acap_xt* _sdp_acaps_find_by_field(const sdp_acap_xt (*acaps)[SDP_CAPS_COUNT_MAX], const char* field, int32_t index);
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static int _sdp_acaps_from_sdp(const sdp_headerM_Or_Message* sdp, sdp_acap_xt (*acaps)[SDP_CAPS_COUNT_MAX], tsk_bool_t reset);
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static int32_t _sdp_tcaps_indexof(const sdp_tcap_xt (*tcaps)[SDP_CAPS_COUNT_MAX], int32_t tag);
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static int _sdp_tcaps_from_sdp(const sdp_headerM_Or_Message* sdp, sdp_tcap_xt (*tcaps)[SDP_CAPS_COUNT_MAX], tsk_bool_t reset);
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static int _sdp_acfg_to_sdp(sdp_headerM_Or_Message* sdp, const sdp_acfg_xt *acfg);
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static int _sdp_pcfgs_from_sdp(const sdp_headerM_Or_Message* sdp, sdp_acap_xt (*acaps)[SDP_CAPS_COUNT_MAX], sdp_tcap_xt (*tcaps)[SDP_CAPS_COUNT_MAX], sdp_pcfg_xt (*pcfgs)[SDP_CAPS_COUNT_MAX], tsk_bool_t reset);
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static int _sdp_pcfgs_to_sdp(sdp_headerM_Or_Message* sdp, const sdp_pcfg_xt (*pcfg)[SDP_CAPS_COUNT_MAX]);
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static int _sdp_pcfg_ensure(sdp_headerM_Or_Message* sdp, const sdp_pcfg_xt* pcfg);
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static int _sdp_pcfgs_cat(const sdp_pcfg_xt (*pcfgs_src)[SDP_CAPS_COUNT_MAX], sdp_pcfg_xt (*pcfgs_dst)[SDP_CAPS_COUNT_MAX]);
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int tdav_session_av_init(tdav_session_av_t* self, tmedia_type_t media_type)
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{
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uint64_t session_id;
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tmedia_profile_t profile = tmedia_defaults_get_profile(); // default profile, will be updated by the SIP session
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if(!self){
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TSK_DEBUG_ERROR("Invalid parameter");
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return -1;
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}
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/* base::init(): called by tmedia_session_create() */
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self->media_type = media_type;
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self->use_rtcp = tmedia_defaults_get_rtcp_enabled();
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self->use_rtcpmux = tmedia_defaults_get_rtcpmux_enabled();
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self->use_avpf = (profile == tmedia_profile_rtcweb); // negotiate if not RTCWeb profile or RFC5939 is in action
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self->bandwidth_max_upload_kbps = (media_type == tmedia_video ? tmedia_defaults_get_bandwidth_video_upload_max() : INT_MAX); // INT_MAX or <=0 means undefined
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self->bandwidth_max_download_kbps = (media_type == tmedia_video ? tmedia_defaults_get_bandwidth_video_download_max() : INT_MAX); // INT_MAX or <=0 means undefined
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self->congestion_ctrl_enabled = tmedia_defaults_get_congestion_ctrl_enabled(); // whether to enable draft-alvestrand-rtcweb-congestion-03 and draft-alvestrand-rmcat-remb-01
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#if HAVE_SRTP
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// this is the default value and can be updated by the user using "session_set('srtp-mode', mode_e)"
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self->srtp_type = (profile == tmedia_profile_rtcweb) ? tmedia_srtp_type_sdes : tmedia_defaults_get_srtp_type();
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self->srtp_mode = (profile == tmedia_profile_rtcweb) ? tmedia_srtp_mode_mandatory : tmedia_defaults_get_srtp_mode();
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self->use_srtp = (self->srtp_mode == tmedia_srtp_mode_mandatory); // if optional -> negotiate
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// remove DTLS-SRTP option if not supported
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if((self->srtp_type & tmedia_srtp_type_dtls) && !tnet_dtls_is_srtp_supported()){
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TSK_DEBUG_WARN("DTLS-SRTP enabled but not supported. Please rebuild the code with this option enabled (requires OpenSSL 1.0.1+)");
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if(!(self->srtp_type &= ~tmedia_srtp_type_dtls)){
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// only DTLS-SRTP was enabled
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self->srtp_mode = tmedia_srtp_mode_none;
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self->use_srtp = tsk_false;
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}
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}
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//!\ DTLS-SRTP requires certificates but do not check right now as it could be defined later
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#endif
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tsk_safeobj_init(self);
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// session id
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if(!(session_id = TMEDIA_SESSION(self)->id)){ // set the session id if not already done
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TMEDIA_SESSION(self)->id = session_id = tmedia_session_get_unique_id();
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}
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// consumer
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TSK_OBJECT_SAFE_FREE(self->consumer);
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if(!(self->consumer = tmedia_consumer_create(self->media_type, session_id))){
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TSK_DEBUG_ERROR("Failed to create consumer for media type = %d", self->media_type);
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}
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// producer
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TSK_OBJECT_SAFE_FREE(self->producer);
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if(!(self->producer = tmedia_producer_create(self->media_type, session_id))){
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TSK_DEBUG_ERROR("Failed to create producer for media type = %d", self->media_type);
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}
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// sdp caps
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TSK_OBJECT_SAFE_FREE(self->sdp_caps);
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if(!(self->sdp_caps = tdav_sdp_caps_create())){
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TSK_DEBUG_ERROR("Failed to create SDP caps");
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return -1;
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}
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// pt mapping (when bypassing is enabled)
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self->pt_map.local = self->pt_map.remote = self->pt_map.neg = -1;
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return 0;
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}
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tsk_bool_t tdav_session_av_set(tdav_session_av_t* self, const tmedia_param_t* param)
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{
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if(!self){
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TSK_DEBUG_ERROR("Invalid parameter");
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return tsk_false;
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}
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// try with base class first
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if(tmedia_session_set_2(TMEDIA_SESSION(self), param)){
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return tsk_true;
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}
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if(param->plugin_type == tmedia_ppt_consumer && self->consumer){
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return (tmedia_consumer_set(self->consumer, param) == 0);
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}
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else if(param->plugin_type == tmedia_ppt_producer && self->producer){
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return (tmedia_producer_set(self->producer, param) == 0);
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}
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else if(param->plugin_type == tmedia_ppt_session){
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if(param->value_type == tmedia_pvt_pchar){
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if(tsk_striequals(param->key, "remote-ip")){
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if(param->value){
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tsk_strupdate(&self->remote_ip, (const char*)param->value);
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return tsk_true;
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}
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}
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else if(tsk_striequals(param->key, "local-ip")){
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tsk_strupdate(&self->local_ip, (const char*)param->value);
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return tsk_true;
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}
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else if(tsk_striequals(param->key, "local-ipver")){
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self->use_ipv6 = tsk_striequals(param->value, "ipv6");
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return tsk_true;
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}
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}
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else if(param->value_type == tmedia_pvt_int32){
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if(tsk_striequals(param->key, "srtp-mode")){
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#if HAVE_SRTP
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self->srtp_mode = (tmedia_srtp_mode_t)TSK_TO_INT32((uint8_t*)param->value);
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if(self->rtp_manager){
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trtp_manager_set_srtp_type_local(self->rtp_manager, self->srtp_type, self->srtp_mode);
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}
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#else
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TSK_DEBUG_INFO("'srtp-mode' param ignored beacuse SRTP not enabled. Please rebuild the source code with this option.");
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#endif /* HAVE_SRTP */
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return tsk_true;
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}
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else if(tsk_striequals(param->key, "rtp-ssrc")){
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self->rtp_ssrc = *((uint32_t*)param->value);
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if(self->rtp_manager && self->rtp_ssrc){
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self->rtp_manager->rtp.ssrc.local = self->rtp_ssrc;
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}
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return tsk_true;
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}
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else if(tsk_striequals(param->key, "rtcp-enabled")){
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self->use_rtcp = (TSK_TO_INT32((uint8_t*)param->value) != 0);
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return tsk_true;
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}
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else if(tsk_striequals(param->key, "rtcpmux-enabled")){
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self->use_rtcpmux = (TSK_TO_INT32((uint8_t*)param->value) != 0);
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return tsk_true;
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}
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else if(tsk_striequals(param->key, "avpf-enabled")){
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self->use_avpf = (TSK_TO_INT32((uint8_t*)param->value) != 0);
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return tsk_true;
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}
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else if(tsk_striequals(param->key, "webrtc2sip-mode-enabled")){
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self->is_webrtc2sip_mode_enabled = (TSK_TO_INT32((uint8_t*)param->value) != 0);
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return tsk_true;
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}
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}
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else if(param->value_type == tmedia_pvt_pobject){
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if(tsk_striequals(param->key, "natt-ctx")){
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TSK_OBJECT_SAFE_FREE(self->natt_ctx);
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self->natt_ctx = tsk_object_ref(param->value);
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return tsk_true;
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}
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else if(tsk_striequals(param->key, "ice-ctx")){
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TSK_OBJECT_SAFE_FREE(self->ice_ctx);
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self->ice_ctx = tsk_object_ref(param->value);
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if(self->rtp_manager){
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trtp_manager_set_ice_ctx(self->rtp_manager, self->ice_ctx);
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}
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return tsk_true;
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}
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else if(tsk_striequals(param->key, "remote-sdp-message")){
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TSK_OBJECT_SAFE_FREE(self->remote_sdp);
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self->remote_sdp = (struct tsdp_message_s*)tsk_object_ref(param->value);
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return tsk_true;
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}
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else if(tsk_striequals(param->key, "local-sdp-message")){
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TSK_OBJECT_SAFE_FREE(self->local_sdp);
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self->local_sdp = (struct tsdp_message_s*)tsk_object_ref(param->value);
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return tsk_true;
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}
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}
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}
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return tsk_false;
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}
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tsk_bool_t tdav_session_av_get(tdav_session_av_t* self, tmedia_param_t* param)
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{
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if(!self || !param){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return tsk_false;
|
|
}
|
|
|
|
// try with the base class to see if this option is supported or not
|
|
if(tmedia_session_get(TMEDIA_SESSION(self), param)){
|
|
return tsk_true;
|
|
}
|
|
|
|
if(param->plugin_type == tmedia_ppt_session){
|
|
if(param->value_type == tmedia_pvt_int32){
|
|
if(tsk_striequals(param->key, "srtp-enabled")){
|
|
#if HAVE_SRTP
|
|
if(self->rtp_manager){
|
|
((int8_t*)param->value)[0] = self->use_srtp ? 1 : 0;
|
|
return tsk_true;
|
|
}
|
|
#else
|
|
((int8_t*)param->value)[0] = 0;
|
|
TSK_DEBUG_INFO("Ignoring parameter 'srtp-enabled' because SRTP not supported. Please rebuild the source code with this option enabled.");
|
|
return tsk_true;
|
|
#endif /* HAVE_SRTP */
|
|
}
|
|
}
|
|
}
|
|
|
|
return tsk_false;
|
|
}
|
|
|
|
int tdav_session_av_prepare(tdav_session_av_t* self)
|
|
{
|
|
int ret = 0;
|
|
|
|
if(!self){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
/* set local port */
|
|
if(!self->rtp_manager){
|
|
self->rtp_manager = self->ice_ctx ? trtp_manager_create_2(self->ice_ctx, self->srtp_type, self->srtp_mode)
|
|
: trtp_manager_create(self->use_rtcp, self->local_ip, self->use_ipv6, self->srtp_type, self->srtp_mode);
|
|
if(self->rtp_manager){
|
|
if((ret = trtp_manager_set_port_range(self->rtp_manager, tmedia_defaults_get_rtp_port_range_start(), tmedia_defaults_get_rtp_port_range_stop()))){
|
|
return ret;
|
|
}
|
|
#if HAVE_SRTP
|
|
if(tsk_strnullORempty(TMEDIA_SESSION(self)->dtls.file_pbk)){
|
|
// DTLS-SRTP requires certificates
|
|
if(self->srtp_type & tmedia_srtp_type_dtls){
|
|
TSK_DEBUG_WARN("DTLS-SRTP requested but no SLL certificates provided, disabling this option :(");
|
|
if(!(self->srtp_type &= ~tmedia_srtp_type_dtls)){
|
|
// only DTLS-SRTP was enabled
|
|
self->srtp_mode = tmedia_srtp_mode_none;
|
|
self->use_srtp = tsk_false;
|
|
// update rtpmanager
|
|
ret = trtp_manager_set_srtp_type_local(self->rtp_manager, self->srtp_type, self->srtp_mode);
|
|
}
|
|
}
|
|
}
|
|
if((self->srtp_type & tmedia_srtp_type_dtls) && (self->srtp_mode == tmedia_srtp_mode_optional || self->srtp_mode == tmedia_srtp_mode_mandatory)){
|
|
if((ret = trtp_manager_set_dtls_certs(self->rtp_manager, TMEDIA_SESSION(self)->dtls.file_ca, TMEDIA_SESSION(self)->dtls.file_pbk, TMEDIA_SESSION(self)->dtls.file_pvk, TMEDIA_SESSION(self)->dtls.verify))){
|
|
return ret;
|
|
}
|
|
}
|
|
#endif /* HAVE_SRTP */
|
|
if((ret = trtp_manager_prepare(self->rtp_manager))){
|
|
return ret;
|
|
}
|
|
if(self->natt_ctx){
|
|
if((ret = trtp_manager_set_natt_ctx(self->rtp_manager, self->natt_ctx))){
|
|
return ret;
|
|
}
|
|
}
|
|
if(self->rtp_ssrc){
|
|
self->rtp_manager->rtp.ssrc.local = self->rtp_ssrc;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* SRTP */
|
|
#if HAVE_SRTP
|
|
{
|
|
|
|
}
|
|
#endif
|
|
|
|
/* Consumer will be prepared in tdav_session_audio_start() */
|
|
/* Producer will be prepared in tdav_session_audio_start() */
|
|
|
|
return ret;
|
|
}
|
|
|
|
int tdav_session_av_start(tdav_session_av_t* self, const tmedia_codec_t* best_codec)
|
|
{
|
|
int ret;
|
|
if(!self || !best_codec){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
// RED codec
|
|
TSK_OBJECT_SAFE_FREE(self->red.codec);
|
|
self->red.payload_type = 0;
|
|
if((self->red.codec = tsk_object_ref((tsk_object_t*)tdav_session_av_get_red_codec(self)))){
|
|
self->red.payload_type = atoi(self->red.codec->neg_format);
|
|
if(!TMEDIA_CODEC(self->red.codec)->opened){
|
|
if((ret = tmedia_codec_open(self->red.codec))){
|
|
TSK_DEBUG_ERROR("Failed to open [%s] codec", self->red.codec->plugin->desc);
|
|
return ret;
|
|
}
|
|
}
|
|
// set RED callback (unencapsulated data)
|
|
ret = tdav_codec_red_set_callback((struct tdav_codec_red_s*)self->red.codec, _tdav_session_av_red_cb, self);
|
|
}
|
|
|
|
// ULPFEC
|
|
TSK_OBJECT_SAFE_FREE(self->ulpfec.codec);
|
|
self->ulpfec.payload_type = 0;
|
|
if((self->ulpfec.codec = tsk_object_ref((tsk_object_t*)tdav_session_av_get_ulpfec_codec(self)))){
|
|
self->ulpfec.payload_type = atoi(self->ulpfec.codec->neg_format);
|
|
if(!TMEDIA_CODEC(self->ulpfec.codec)->opened){
|
|
if((ret = tmedia_codec_open(self->ulpfec.codec))){
|
|
TSK_DEBUG_ERROR("Failed to open [%s] codec", self->ulpfec.codec->plugin->desc);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(self->rtp_manager){
|
|
int ret;
|
|
/* RTP/RTCP manager: use latest information. */
|
|
|
|
// set callbacks
|
|
#if HAVE_SRTP
|
|
ret = trtp_manager_set_dtls_callback(self->rtp_manager, self, _tdav_session_av_srtp_dtls_cb);
|
|
#endif /* HAVE_SRTP */
|
|
|
|
// network information will be updated when the RTP manager starts if ICE is enabled
|
|
ret = trtp_manager_set_rtp_remote(self->rtp_manager, self->remote_ip, self->remote_port);
|
|
self->rtp_manager->use_rtcpmux = self->use_rtcpmux;
|
|
ret = trtp_manager_set_payload_type(self->rtp_manager, best_codec->neg_format ? atoi(best_codec->neg_format) : atoi(best_codec->format));
|
|
{
|
|
int32_t bandwidth_max_upload_kbps = self->bandwidth_max_upload_kbps;
|
|
int32_t bandwidth_max_download_kbps = self->bandwidth_max_download_kbps;
|
|
if(self->media_type == tmedia_video){
|
|
if(self->congestion_ctrl_enabled){
|
|
const tmedia_codec_t* best_codec = tdav_session_av_get_best_neg_codec(self); // use for encoding for sure and probably for decoding
|
|
if(TDAV_IS_VIDEO_CODEC(best_codec)){
|
|
// the up bandwidth will be updated once the decode the first frame as the current values (width, height, fps) are not really correct and based on the SDP negotiation
|
|
bandwidth_max_download_kbps = TSK_MIN(
|
|
tmedia_get_video_bandwidth_kbps_2(TMEDIA_CODEC_VIDEO(best_codec)->in.width, TMEDIA_CODEC_VIDEO(best_codec)->in.height, TMEDIA_CODEC_VIDEO(best_codec)->in.fps),
|
|
bandwidth_max_download_kbps);
|
|
bandwidth_max_upload_kbps = TSK_MIN(
|
|
tmedia_get_video_bandwidth_kbps_2(TMEDIA_CODEC_VIDEO(best_codec)->out.width, TMEDIA_CODEC_VIDEO(best_codec)->out.height, TMEDIA_CODEC_VIDEO(best_codec)->out.fps),
|
|
bandwidth_max_upload_kbps);
|
|
}
|
|
else if(self->media_type == tmedia_video){
|
|
bandwidth_max_download_kbps = TSK_MIN(tmedia_get_video_bandwidth_kbps_3(), bandwidth_max_download_kbps);
|
|
bandwidth_max_upload_kbps = TSK_MIN(tmedia_get_video_bandwidth_kbps_3(), bandwidth_max_upload_kbps);
|
|
}
|
|
}
|
|
}
|
|
TSK_DEBUG_INFO("max_bw_up=%d kpbs, max_bw_down=%d kpbs, congestion_ctrl_enabled=%d, media_type=%d", bandwidth_max_upload_kbps, bandwidth_max_download_kbps, self->congestion_ctrl_enabled, self->media_type);
|
|
ret = trtp_manager_set_app_bandwidth_max(self->rtp_manager, bandwidth_max_upload_kbps, bandwidth_max_download_kbps);
|
|
}
|
|
ret = trtp_manager_start(self->rtp_manager);
|
|
|
|
// because of AudioUnit under iOS => prepare both consumer and producer then start() at the same time
|
|
/* prepare consumer and producer */
|
|
if(self->producer) ret = tmedia_producer_prepare(self->producer, best_codec);
|
|
if(self->consumer) ret = tmedia_consumer_prepare(self->consumer, best_codec);
|
|
|
|
#if HAVE_SRTP
|
|
self->use_srtp = trtp_manager_is_srtp_activated(self->rtp_manager);
|
|
|
|
/* start consumer and producer */
|
|
if(trtp_manager_is_dtls_activated(self->rtp_manager) && !trtp_manager_is_dtls_started(self->rtp_manager)){
|
|
// delay starting util DTLS-SRTP negotiation terminates (handshaking succeed)
|
|
TSK_DEBUG_INFO("Delaying consumer/producer starting until DTLS-SRTP negotiation complete");
|
|
}
|
|
else{
|
|
#endif /* HAVE_SRTP */
|
|
if(self->consumer) ret = tmedia_consumer_start(self->consumer);
|
|
if(self->producer) ret = tmedia_producer_start(self->producer);
|
|
#if HAVE_SRTP
|
|
}
|
|
#endif /* HAVE_SRTP */
|
|
|
|
return ret;
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("Invalid RTP/RTCP manager");
|
|
return -3;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int tdav_session_av_stop(tdav_session_av_t* self)
|
|
{
|
|
tmedia_codec_t* codec;
|
|
tsk_list_item_t* item;
|
|
int ret = 0;
|
|
|
|
if(!self){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
/* stop Producer */
|
|
if(self->producer){
|
|
ret = tmedia_producer_stop(self->producer);
|
|
}
|
|
|
|
/* stop RTP/RTCP manager */
|
|
if(self->rtp_manager){
|
|
ret = trtp_manager_stop(self->rtp_manager);
|
|
}
|
|
|
|
/* stop Consumer (after RTP manager to silently discard in coming packets) */
|
|
if(self->consumer){
|
|
ret = tmedia_consumer_stop(self->consumer);
|
|
}
|
|
|
|
/* close codecs to force open() for next start (e.g SIP UPDATE with SDP) */
|
|
if(TMEDIA_SESSION(self)->neg_codecs){
|
|
tsk_list_foreach(item, TMEDIA_SESSION(self)->neg_codecs){
|
|
if(!(codec = TMEDIA_CODEC(item->data))){
|
|
continue;
|
|
}
|
|
ret = tmedia_codec_close(codec);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int tdav_session_av_pause(tdav_session_av_t* self)
|
|
{
|
|
int ret = 0;
|
|
|
|
if(!self){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
/* Consumer */
|
|
if(self->consumer){
|
|
ret = tmedia_consumer_pause(self->consumer);
|
|
}
|
|
/* Producer */
|
|
if(self->producer){
|
|
ret = tmedia_producer_pause(self->producer);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
const tsdp_header_M_t* tdav_session_av_get_lo(tdav_session_av_t* self, tsk_bool_t *updated)
|
|
{
|
|
tmedia_session_t* base = TMEDIA_SESSION(self);
|
|
#if HAVE_SRTP
|
|
static const tsk_bool_t have_lib_srtp = tsk_true;
|
|
#else
|
|
static const tsk_bool_t have_lib_srtp = tsk_false;
|
|
#endif
|
|
const tsk_bool_t have_lib_srtp_dtls = tnet_dtls_is_srtp_supported();
|
|
tsk_bool_t is_srtp_enable = (self->srtp_type != tmedia_srtp_type_none) && (self->srtp_mode == tmedia_srtp_mode_optional || self->srtp_mode == tmedia_srtp_mode_mandatory);
|
|
tsk_bool_t is_srtp_dtls_enabled = is_srtp_enable && !!(self->srtp_type & tmedia_srtp_type_dtls);
|
|
tsk_bool_t is_srtp_sdes_enabled = is_srtp_enable && !!(self->srtp_type & tmedia_srtp_type_sdes);
|
|
tsk_bool_t is_srtp_local_mandatory = is_srtp_enable && (self->srtp_mode == tmedia_srtp_mode_mandatory);
|
|
tsk_bool_t is_first_media;
|
|
|
|
if(!base || !base->plugin || !updated){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return tsk_null;
|
|
}
|
|
|
|
*updated = tsk_false;
|
|
|
|
if(!self->rtp_manager || (!self->ice_ctx && !self->rtp_manager->transport)){
|
|
if(self->rtp_manager && (!self->ice_ctx && !self->rtp_manager->transport)){ // reINVITE or UPDATE (manager was destroyed when stoppped)
|
|
if(trtp_manager_prepare(self->rtp_manager)){
|
|
TSK_DEBUG_ERROR("Failed to prepare transport");
|
|
return tsk_null;
|
|
}
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("RTP/RTCP manager in invalid");
|
|
return tsk_null;
|
|
}
|
|
}
|
|
|
|
// only first media will add session-level attributes (e.g. DTLS setup and fingerprint)
|
|
if((is_first_media = !!self->local_sdp)){
|
|
const tsdp_header_M_t* firstM = (const tsdp_header_M_t*)tsdp_message_get_headerAt(self->local_sdp, tsdp_htype_M, 0);
|
|
if(!(is_first_media = !firstM)){
|
|
is_first_media = tsk_striequals(TMEDIA_SESSION(self)->plugin->media, firstM->media);
|
|
}
|
|
}
|
|
|
|
if(base->ro_changed && base->M.lo){
|
|
static const char* __fields[] =
|
|
{
|
|
/* Codecs */
|
|
"fmtp", "rtpmap", "imageattr",
|
|
/* QoS */
|
|
"curr", "des", "conf",
|
|
/* SRTP */
|
|
"crypto",
|
|
/* DTLS */
|
|
"setup", "fingerprint",
|
|
/* ICE */
|
|
"candidate", "ice-ufrag", "ice-pwd",
|
|
/* SDPCapNeg */
|
|
"tcap", "acap", "pcfg",
|
|
/* Others */
|
|
"mid", "rtcp-mux", "ssrc"
|
|
};
|
|
// remove media-level attributes
|
|
tsdp_header_A_removeAll_by_fields(base->M.lo->Attributes, __fields, sizeof(__fields)/sizeof(__fields[0]));
|
|
tsk_list_clear_items(base->M.lo->FMTs);
|
|
// remove session-level attributes
|
|
if(is_first_media){
|
|
// headers: contains all kind of headers but this is a smart function :)
|
|
tsdp_header_A_removeAll_by_fields((tsdp_headers_A_L_t*)self->local_sdp->headers, __fields, sizeof(__fields)/sizeof(__fields[0]));
|
|
}
|
|
}
|
|
|
|
*updated = (base->ro_changed || !base->M.lo);
|
|
|
|
if(!base->M.lo){
|
|
if((base->M.lo = tsdp_header_M_create(base->plugin->media, self->rtp_manager->rtp.public_port, "RTP/AVP"))){
|
|
/* If NATT is active, do not rely on the global IP address Connection line */
|
|
if(self->natt_ctx){
|
|
tsdp_header_M_add_headers(base->M.lo,
|
|
TSDP_HEADER_C_VA_ARGS("IN", self->use_ipv6 ? "IP6" : "IP4", self->rtp_manager->rtp.public_ip),
|
|
tsk_null);
|
|
}
|
|
/* 3GPP TS 24.229 - 6.1.1 General
|
|
In order to support accurate bandwidth calculations, the UE may include the "a=ptime" attribute for all "audio" media
|
|
lines as described in RFC 4566 [39]. If a UE receives an "audio" media line with "a=ptime" specified, the UE should
|
|
transmit at the specified packetization rate. If a UE receives an "audio" media line which does not have "a=ptime"
|
|
specified or the UE does not support the "a=ptime" attribute, the UE should transmit at the default codec packetization
|
|
rate as defined in RFC 3551 [55A]. The UE will transmit consistent with the resources available from the network.
|
|
|
|
For "video" and "audio" media types that utilize the RTP/RTCP, the UE shall specify the proposed bandwidth for each
|
|
media stream utilizing the "b=" media descriptor and the "AS" bandwidth modifier in the SDP.
|
|
|
|
The UE shall include the MIME subtype "telephone-event" in the "m=" media descriptor in the SDP for audio media
|
|
flows that support both audio codec and DTMF payloads in RTP packets as described in RFC 4733 [23].
|
|
*/
|
|
if(self->media_type == tmedia_audio){
|
|
tsk_istr_t ptime;
|
|
tsk_itoa(tmedia_defaults_get_audio_ptime(), &ptime);
|
|
tsdp_header_M_add_headers(base->M.lo,
|
|
/* rfc3551 section 4.5 says the default ptime is 20 */
|
|
TSDP_HEADER_A_VA_ARGS("ptime", ptime),
|
|
TSDP_HEADER_A_VA_ARGS("minptime", "1"),
|
|
TSDP_HEADER_A_VA_ARGS("maxptime", "255"),
|
|
TSDP_HEADER_A_VA_ARGS("silenceSupp", "off - - - -"),
|
|
tsk_null);
|
|
// the "telephone-event" fmt/rtpmap is added below
|
|
}
|
|
else if(self->media_type == tmedia_video){
|
|
// https://code.google.com/p/webrtc2sip/issues/detail?id=81
|
|
tsdp_header_M_add_headers(base->M.lo,
|
|
TSDP_HEADER_A_VA_ARGS("rtcp-fb", "* nack pli"),
|
|
TSDP_HEADER_A_VA_ARGS("rtcp-fb", "* ccm fir"),
|
|
tsk_null);
|
|
// http://tools.ietf.org/html/rfc3556
|
|
if(self->bandwidth_max_download_kbps > 0 && self->bandwidth_max_download_kbps != INT_MAX){ // INT_MAX or <=0 means undefined
|
|
tsdp_header_M_add_headers(base->M.lo,
|
|
TSDP_HEADER_B_VA_ARGS("AS", self->bandwidth_max_download_kbps),
|
|
tsk_null);
|
|
}
|
|
}
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("Failed to create lo");
|
|
return tsk_null;
|
|
}
|
|
}
|
|
|
|
if(*updated){
|
|
tmedia_codecs_L_t* neg_codecs = tsk_null;
|
|
|
|
if(base->M.ro){
|
|
TSK_OBJECT_SAFE_FREE(base->neg_codecs);
|
|
/* update negociated codecs */
|
|
if((neg_codecs = tmedia_session_match_codec(base, base->M.ro))){
|
|
base->neg_codecs = neg_codecs;
|
|
}
|
|
/* from codecs to sdp */
|
|
if(TSK_LIST_IS_EMPTY(base->neg_codecs) || ((base->neg_codecs->tail == base->neg_codecs->head) && TDAV_IS_DTMF_CODEC(TSK_LIST_FIRST_DATA(base->neg_codecs)))){
|
|
base->M.lo->port = 0; /* Keep the RTP transport and reuse it when we receive a reINVITE or UPDATE request */
|
|
// To reject an offered stream, the port number in the corresponding stream in the answer
|
|
// MUST be set to zero. Any media formats listed are ignored. AT LEAST ONE MUST BE PRESENT, AS SPECIFIED BY SDP.
|
|
tsk_strupdate(&base->M.lo->proto, base->M.ro->proto);
|
|
if(base->M.ro->FMTs){
|
|
tsk_list_pushback_list(base->M.lo->FMTs, base->M.ro->FMTs);
|
|
}
|
|
TSK_DEBUG_INFO("No codec matching for media type = %d", (int32_t)self->media_type);
|
|
goto DONE;
|
|
}
|
|
else{
|
|
tmedia_codec_to_sdp(base->neg_codecs, base->M.lo);
|
|
}
|
|
}
|
|
else{
|
|
/* from codecs to sdp */
|
|
tmedia_codec_to_sdp(base->codecs, base->M.lo);
|
|
}
|
|
|
|
/* SRTP */
|
|
#if HAVE_SRTP
|
|
{ //start-of-HAVE_SRTP
|
|
|
|
/* DTLS-SRTP default values */
|
|
if(is_srtp_dtls_enabled){
|
|
/* "setup" and "connection" */
|
|
// rfc5763: the caller is server by default
|
|
//if(self->dtls.local.setup == tnet_dtls_setup_none || self->dtls.local.setup == tnet_dtls_setup_actpass){
|
|
self->dtls.remote.setup = (!base->M.ro) ? tnet_dtls_setup_active : tnet_dtls_setup_passive;
|
|
//}
|
|
_tdav_session_av_dtls_set_remote_setup(self, self->dtls.remote.setup, self->dtls.remote.connection_new);
|
|
if(self->rtp_manager){
|
|
trtp_manager_set_dtls_local_setup(self->rtp_manager, self->dtls.local.setup, self->dtls.local.connection_new);
|
|
}
|
|
}
|
|
|
|
if(!base->M.ro){
|
|
// === RO IS NULL ===
|
|
const trtp_srtp_ctx_xt *srtp_ctxs[SRTP_CRYPTO_TYPES_MAX] = { tsk_null };
|
|
tsk_size_t ctx_count = 0, ctx_idx, acap_tag = 1;
|
|
tsk_size_t acap_tag_fp_sha1 = 0, acap_tag_fp_sha256 = 0, acap_tag_setup = 0, acap_tag_connection = 0, acap_tag_crypro_start = 0;
|
|
char* str = tsk_null;
|
|
tsdp_header_A_t* cryptoA = tsk_null;
|
|
tsk_bool_t negotiate_srtp = (self->srtp_mode == tmedia_srtp_mode_optional && !base->M.ro);
|
|
tsk_bool_t negotiate_avpf = !self->use_avpf;
|
|
tsk_bool_t is_srtp_remote_mandatory = (base->M.ro && _sdp_str_contains(base->M.ro->proto, "SAVP"));
|
|
tsk_size_t profiles_index = 0;
|
|
RTP_PROFILE_T profiles[RTP_PROFILES_COUNT] = { RTP_PROFILE_NONE };
|
|
|
|
// get local SRTP context
|
|
if(is_srtp_sdes_enabled){
|
|
ctx_count = trtp_srtp_get_local_contexts(self->rtp_manager, (const trtp_srtp_ctx_xt **)&srtp_ctxs, sizeof(srtp_ctxs)/sizeof(srtp_ctxs[0]));
|
|
}
|
|
|
|
// a=tcap:
|
|
if((negotiate_srtp || negotiate_avpf)){
|
|
static const int32_t __tcap_tag = 1;
|
|
char* tcap = tsk_null;
|
|
const char* fp_sha1 = tsk_null;
|
|
const char* fp_sha256 = tsk_null;
|
|
#define _first_media_add_header()
|
|
#define _first_media_strcat(ppstr, format, ...) if(is_first_media) tsk_strcat_2((ppstr), (format), ##__VA_ARGS__)
|
|
#define _first_media_sprintf(ppstr, format, ...) if(is_first_media) tsk_sprintf((ppstr), (format), ##__VA_ARGS__)
|
|
#define _first_media_add_headers(sdp, ...) if(is_first_media) tsdp_message_add_headers((sdp), ##__VA_ARGS__)
|
|
|
|
_first_media_strcat(&tcap, "%d", __tcap_tag);
|
|
|
|
if(is_srtp_dtls_enabled){
|
|
if(!tsk_strnullORempty(TMEDIA_SESSION(self)->dtls.file_pbk)){
|
|
fp_sha1 = trtp_manager_get_dtls_local_fingerprint(self->rtp_manager, tnet_dtls_hash_type_sha1);
|
|
fp_sha256 = trtp_manager_get_dtls_local_fingerprint(self->rtp_manager, tnet_dtls_hash_type_sha256);
|
|
}
|
|
_first_media_strcat(&tcap, negotiate_avpf ? " UDP/TLS/RTP/SAVPF UDP/TLS/RTP/SAVP" : "UDP/TLS/RTP/SAVP");
|
|
if(negotiate_avpf){
|
|
profiles[profiles_index++] = RTP_PROFILE_UDP_TLS_RTP_SAVPF;
|
|
}
|
|
profiles[profiles_index++] = RTP_PROFILE_UDP_TLS_RTP_SAVP;
|
|
}
|
|
if(is_srtp_sdes_enabled){
|
|
_first_media_strcat(&tcap, negotiate_avpf ? " RTP/SAVPF RTP/SAVP" : "RTP/SAVP");
|
|
if(negotiate_avpf){
|
|
profiles[profiles_index++] = RTP_PROFILE_SAVPF;
|
|
}
|
|
profiles[profiles_index++] = RTP_PROFILE_SAVP;
|
|
}
|
|
|
|
if(!is_srtp_local_mandatory){
|
|
_first_media_strcat(&tcap, " RTP/AVPF");
|
|
profiles[profiles_index++] = RTP_PROFILE_AVPF;
|
|
}
|
|
|
|
// DTLS "setup" and "fringerprint"s
|
|
if((fp_sha1 || fp_sha256) && negotiate_srtp){
|
|
char* acap_fp = tsk_null;
|
|
acap_tag_setup = 1, acap_tag_connection = 2;
|
|
_first_media_sprintf(&str, "%d setup:%s", acap_tag_setup, TNET_DTLS_SETUP_NAMES[self->dtls.local.setup]);
|
|
_first_media_add_headers(self->local_sdp, TSDP_HEADER_A_VA_ARGS("acap", str), tsk_null);
|
|
_first_media_sprintf(&str, "%d connection:%s", acap_tag_connection, self->dtls.local.connection_new ? "new" : "existing");
|
|
_first_media_add_headers(self->local_sdp, TSDP_HEADER_A_VA_ARGS("acap", str), tsk_null);
|
|
// New Firefox Nightly repspond with SHA-256 when offered SHA-1 -> It's a bug in FF
|
|
// Just use SHA-256 as first choice
|
|
if(fp_sha256){
|
|
_first_media_sprintf(&acap_fp, "3 fingerprint:%s %s", TNET_DTLS_HASH_NAMES[tnet_dtls_hash_type_sha256], fp_sha256);
|
|
acap_tag_fp_sha256 = 3;
|
|
_first_media_add_headers(self->local_sdp, TSDP_HEADER_A_VA_ARGS("acap", acap_fp), tsk_null);
|
|
}
|
|
if(fp_sha1){
|
|
_first_media_sprintf(&acap_fp, "%d fingerprint:%s %s", fp_sha256 ? 4 : 3, TNET_DTLS_HASH_NAMES[tnet_dtls_hash_type_sha1], fp_sha1);
|
|
acap_tag_fp_sha1 = (fp_sha256 ? 4 : 3);
|
|
_first_media_add_headers(self->local_sdp, TSDP_HEADER_A_VA_ARGS("acap", acap_fp), tsk_null);
|
|
}
|
|
|
|
TSK_FREE(acap_fp);
|
|
}
|
|
|
|
// "tcap"
|
|
_first_media_add_headers(self->local_sdp, TSDP_HEADER_A_VA_ARGS("tcap", tcap), tsk_null);
|
|
TSK_FREE(tcap);
|
|
|
|
acap_tag = TSK_MAX(acap_tag, acap_tag_connection);
|
|
acap_tag = TSK_MAX(acap_tag, acap_tag_fp_sha1);
|
|
acap_tag = TSK_MAX(acap_tag, acap_tag_fp_sha256);
|
|
}
|
|
if(is_first_media && !negotiate_srtp && is_srtp_dtls_enabled){
|
|
// add DTLS-SRTP fingerprint and setup at session-level
|
|
const char* fp_str = trtp_manager_get_dtls_local_fingerprint(self->rtp_manager, TDAV_DFAULT_FP_HASH);
|
|
if(fp_str){
|
|
tsk_sprintf(&str, "%s %s", TNET_DTLS_HASH_NAMES[TDAV_DFAULT_FP_HASH], fp_str);
|
|
#if TDAV_FIXME_MEDIA_LEVEL_DTLS_ATT
|
|
tsdp_header_M_add_headers(base->M.lo, TSDP_HEADER_A_VA_ARGS("fingerprint", str), tsk_null);
|
|
tsdp_header_M_add_headers(base->M.lo, TSDP_HEADER_A_VA_ARGS("setup", "active"), tsk_null);
|
|
tsdp_header_M_add_headers(base->M.lo, TSDP_HEADER_A_VA_ARGS("connection", "new"), tsk_null);
|
|
#else
|
|
_first_media_add_headers(self->local_sdp, TSDP_HEADER_A_VA_ARGS("fingerprint", str), tsk_null);
|
|
_first_media_add_headers(self->local_sdp, TSDP_HEADER_A_VA_ARGS("setup", TNET_DTLS_SETUP_NAMES[self->dtls.local.setup]), tsk_null);
|
|
_first_media_add_headers(self->local_sdp, TSDP_HEADER_A_VA_ARGS("connection", self->dtls.local.connection_new ? "new" : "existing"), tsk_null);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// "a=acap:crypto" or "a=crypto"
|
|
for(ctx_idx = 0; ctx_idx < ctx_count; ++ctx_idx){
|
|
if(acap_tag_crypro_start == 0){
|
|
acap_tag_crypro_start = (acap_tag == 1 ? acap_tag : ++acap_tag);
|
|
}
|
|
if(negotiate_srtp){
|
|
tsk_sprintf(&str, "%d crypto:%d %s inline:%s", acap_tag++, srtp_ctxs[ctx_idx]->rtp.tag, trtp_srtp_crypto_type_strings[srtp_ctxs[ctx_idx]->rtp.crypto_type], srtp_ctxs[ctx_idx]->rtp.key_str);
|
|
cryptoA = tsdp_header_A_create("acap", str);
|
|
}
|
|
else{
|
|
tsk_sprintf(&str, "%d %s inline:%s", srtp_ctxs[ctx_idx]->rtp.tag, trtp_srtp_crypto_type_strings[srtp_ctxs[ctx_idx]->rtp.crypto_type], srtp_ctxs[ctx_idx]->rtp.key_str);
|
|
cryptoA = tsdp_header_A_create("crypto", str);
|
|
}
|
|
|
|
tsdp_header_M_add(base->M.lo, (const tsdp_header_t*)cryptoA);
|
|
|
|
TSK_OBJECT_SAFE_FREE(cryptoA);
|
|
}
|
|
|
|
// a=pcfg:
|
|
if(negotiate_srtp || negotiate_avpf){
|
|
tsk_size_t pcfg_tag, pcfg_idx;
|
|
char *acap_crypto = tsk_null, *acap_dtls = tsk_null;
|
|
|
|
// crypto
|
|
for(ctx_idx = 0; ctx_idx < ctx_count; ++ctx_idx){
|
|
tsk_strcat_2(&acap_crypto, "%s%d",
|
|
acap_crypto ? "," : "",
|
|
(acap_tag_crypro_start + ctx_idx)
|
|
);
|
|
}
|
|
|
|
// dtls setup and fingerprints
|
|
if(acap_tag_setup > 0 && acap_tag_connection > 0 && (acap_tag_fp_sha1 > 0 || acap_tag_fp_sha256 > 0)){
|
|
tsk_sprintf(&acap_dtls, "%d,%d", acap_tag_setup, acap_tag_connection);
|
|
if(acap_tag_fp_sha1 > 0){
|
|
tsk_strcat_2(&acap_dtls, ",%d", acap_tag_fp_sha1);
|
|
}
|
|
if(acap_tag_fp_sha256 > 0){
|
|
tsk_strcat_2(&acap_dtls, "%s%d", acap_tag_fp_sha1 > 0 ? "|" : ",", acap_tag_fp_sha256);
|
|
}
|
|
}
|
|
|
|
for(pcfg_tag = 1, pcfg_idx = 0; pcfg_idx < profiles_index; ++pcfg_tag, ++pcfg_idx){
|
|
if(((profiles[pcfg_idx] & RTP_PROFILE_SECURE_SDES) == RTP_PROFILE_SECURE_SDES) && acap_crypto){
|
|
tsk_sprintf(&str, "%d t=%d a=%s", pcfg_tag, pcfg_tag, acap_crypto);
|
|
}
|
|
else if(((profiles[pcfg_idx] & RTP_PROFILE_SECURE_DTLS) == RTP_PROFILE_SECURE_DTLS) && acap_dtls){
|
|
tsk_sprintf(&str, "%d t=%d a=%s", pcfg_tag, pcfg_tag, acap_dtls);
|
|
}
|
|
else{
|
|
tsk_sprintf(&str, "%d t=%d", pcfg_tag, pcfg_tag);
|
|
}
|
|
tsdp_header_M_add_headers(base->M.lo, TSDP_HEADER_A_VA_ARGS("pcfg", str), tsk_null);
|
|
}
|
|
|
|
TSK_FREE(acap_crypto);
|
|
TSK_FREE(acap_dtls);
|
|
}
|
|
|
|
if(is_srtp_remote_mandatory || is_srtp_local_mandatory || trtp_srtp_is_initialized(self->rtp_manager)){
|
|
self->use_srtp = tsk_true;
|
|
}
|
|
|
|
/* RFC 5939 - Session Description Protocol (SDP) Capability Negotiation */
|
|
{
|
|
sdp_acaps_xt acaps;
|
|
sdp_tcaps_xt tcaps;
|
|
|
|
_sdp_acaps_reset(&acaps);
|
|
_sdp_tcaps_reset(&tcaps);
|
|
_sdp_pcfgs_reset(&self->sdp_caps->local);
|
|
// session-level attributes
|
|
if(self->local_sdp){
|
|
_sdp_pcfgs_from_sdp(self->local_sdp, &acaps, &tcaps, &self->sdp_caps->local, tsk_false);
|
|
}
|
|
// media-level attributes
|
|
_sdp_pcfgs_from_sdp(base->M.lo, &acaps, &tcaps, &self->sdp_caps->local, tsk_false);
|
|
}
|
|
|
|
TSK_FREE(str);
|
|
} //end-of-if(!base->M.ro)
|
|
else{
|
|
// === RO IS NOT NULL ===
|
|
// the ro validity has been checked in "set_ro()"
|
|
RTP_PROFILE_T profile_remote = (self->sdp_caps->acfg.tag > 0 && self->sdp_caps->acfg.tcap.tag > 0)
|
|
? self->sdp_caps->acfg.tcap.profile
|
|
: _sdp_profile_from_string(base->M.ro->proto);
|
|
tsk_bool_t is_srtp_sdes_activated = tsk_false, is_srtp_dtls_activated = tsk_false;
|
|
|
|
// intersect remote and local SRTP options
|
|
self->use_avpf |= ((profile_remote & RTP_PROFILE_AVPF) == RTP_PROFILE_AVPF);
|
|
is_srtp_sdes_enabled &= ((profile_remote & RTP_PROFILE_SECURE_SDES) == RTP_PROFILE_SECURE_SDES);
|
|
is_srtp_dtls_enabled &= ((profile_remote & RTP_PROFILE_SECURE_DTLS) == RTP_PROFILE_SECURE_DTLS);
|
|
|
|
|
|
// SDES-SRTP
|
|
if(is_srtp_sdes_enabled){
|
|
const trtp_srtp_ctx_xt *srtp_ctxs[SRTP_CRYPTO_TYPES_MAX] = { tsk_null };
|
|
tsk_size_t ctx_count = 0, ctx_idx;
|
|
// get local SRTP context
|
|
if((ctx_count = trtp_srtp_get_local_contexts(self->rtp_manager, (const trtp_srtp_ctx_xt **)&srtp_ctxs, sizeof(srtp_ctxs)/sizeof(srtp_ctxs[0]))) > 0){
|
|
char* str = tsk_null;
|
|
for(ctx_idx = 0; ctx_idx < ctx_count; ++ctx_idx){
|
|
is_srtp_sdes_activated = tsk_true;
|
|
tsk_sprintf(&str, "%d %s inline:%s", srtp_ctxs[ctx_idx]->rtp.tag, trtp_srtp_crypto_type_strings[srtp_ctxs[ctx_idx]->rtp.crypto_type], srtp_ctxs[ctx_idx]->rtp.key_str);
|
|
tsdp_header_M_add_headers(base->M.lo, TSDP_HEADER_A_VA_ARGS("crypto", str), tsk_null);
|
|
}
|
|
TSK_FREE(str);
|
|
}
|
|
}
|
|
|
|
// DTLS-SRTP
|
|
if(!is_srtp_sdes_activated && is_srtp_dtls_enabled){
|
|
// get "fingerprint", "setup" and "connection" attributes
|
|
if(!tsk_strnullORempty(TMEDIA_SESSION(self)->dtls.file_pbk)){
|
|
tnet_dtls_hash_type_t fp_hash_remote;
|
|
char* str = tsk_null;
|
|
if((fp_hash_remote = trtp_manager_get_dtls_remote_fingerprint_hash(self->rtp_manager)) == tnet_dtls_hash_type_none){
|
|
fp_hash_remote = TDAV_DFAULT_FP_HASH;
|
|
}
|
|
tsk_sprintf(&str, "%s %s", TNET_DTLS_HASH_NAMES[fp_hash_remote], trtp_manager_get_dtls_local_fingerprint(self->rtp_manager, fp_hash_remote));
|
|
#if TDAV_FIXME_MEDIA_LEVEL_DTLS_ATT
|
|
tsdp_header_M_add_headers(base->M.lo, TSDP_HEADER_A_VA_ARGS("fingerprint", str), tsk_null);
|
|
#else
|
|
_first_media_add_headers(self->local_sdp, TSDP_HEADER_A_VA_ARGS("fingerprint", str), tsk_null);
|
|
#endif
|
|
TSK_FREE(str);
|
|
}
|
|
#if TDAV_FIXME_MEDIA_LEVEL_DTLS_ATT
|
|
tsdp_header_M_add_headers(base->M.lo, TSDP_HEADER_A_VA_ARGS("setup", TNET_DTLS_SETUP_NAMES[self->dtls.local.setup]), tsk_null);
|
|
tsdp_header_M_add_headers(base->M.lo, TSDP_HEADER_A_VA_ARGS("connection", self->dtls.local.connection_new ? "new" : "existing"), tsk_null);
|
|
#else
|
|
_first_media_add_headers(self->local_sdp, TSDP_HEADER_A_VA_ARGS("setup", TNET_DTLS_SETUP_NAMES[self->dtls.local.setup]), tsk_null);
|
|
_first_media_add_headers(self->local_sdp, TSDP_HEADER_A_VA_ARGS("connection", self->dtls.local.connection_new ? "new" : "existing"), tsk_null);
|
|
#endif
|
|
|
|
is_srtp_dtls_activated = tsk_true;
|
|
}
|
|
|
|
// activate the right SRTP type and disable others
|
|
trtp_manager_set_srtp_type_remote(self->rtp_manager,
|
|
is_srtp_sdes_activated ? tmedia_srtp_type_sdes : (is_srtp_dtls_activated ? tmedia_srtp_type_dtls : tmedia_srtp_type_none));
|
|
|
|
self->use_srtp |= (is_srtp_sdes_activated || is_srtp_dtls_activated);
|
|
is_srtp_sdes_enabled &= is_srtp_sdes_activated;
|
|
is_srtp_dtls_enabled &= is_srtp_dtls_activated;
|
|
|
|
}//end-of-else
|
|
}//end-of-HAVE_SRTP
|
|
#endif /* HAVE_SRTP */
|
|
|
|
|
|
/* RFC 5939: acfg */
|
|
if(self->sdp_caps->acfg.tag > 0){
|
|
_sdp_acfg_to_sdp(base->M.lo, &self->sdp_caps->acfg);
|
|
}
|
|
|
|
/* Hold/Resume */
|
|
tsdp_header_M_set_holdresume_att(base->M.lo, base->lo_held, base->ro_held);
|
|
|
|
/* Update Proto*/
|
|
tsk_strupdate(&base->M.lo->proto,
|
|
self->use_srtp
|
|
? (self->use_avpf ? (is_srtp_dtls_enabled ? "UDP/TLS/RTP/SAVPF" : "RTP/SAVPF") : (is_srtp_dtls_enabled ? "UDP/TLS/RTP/SAVP" : "RTP/SAVP"))
|
|
: (self->use_avpf ? "RTP/AVPF" : "RTP/AVP")
|
|
);
|
|
|
|
// RFC 5761: RTCP/RTP muxing
|
|
if(self->use_rtcpmux){
|
|
tsdp_header_M_add_headers(base->M.lo, TSDP_HEADER_A_VA_ARGS("rtcp-mux", tsk_null), tsk_null);
|
|
}
|
|
|
|
// draft-lennox-mmusic-sdp-source-attributes-01
|
|
if(self->media_type == tmedia_audio || self->media_type == tmedia_video){
|
|
char* str = tsk_null;
|
|
tsk_sprintf(&str, "%u cname:%s", self->rtp_manager->rtp.ssrc.local, self->rtp_manager->rtcp.cname); // also defined in RTCP session
|
|
tsdp_header_M_add_headers(base->M.lo, TSDP_HEADER_A_VA_ARGS("ssrc", str), tsk_null);
|
|
tsk_sprintf(&str, "%u mslabel:%s", self->rtp_manager->rtp.ssrc.local, "6994f7d1-6ce9-4fbd-acfd-84e5131ca2e2");
|
|
tsdp_header_M_add_headers(base->M.lo, TSDP_HEADER_A_VA_ARGS("ssrc", str), tsk_null);
|
|
tsk_sprintf(&str, "%u label:%s", self->rtp_manager->rtp.ssrc.local, (self->media_type == tmedia_audio) ? "doubango@audio" : "doubango@video"); /* https://groups.google.com/group/discuss-webrtc/browse_thread/thread/6c44106c8ce7d6dc */
|
|
tsdp_header_M_add_headers(base->M.lo, TSDP_HEADER_A_VA_ARGS("ssrc", str), tsk_null);
|
|
TSK_FREE(str);
|
|
}
|
|
|
|
/* ICE */
|
|
if(self->ice_ctx){
|
|
tsk_size_t index = 0;
|
|
const tnet_ice_candidate_t* candidate;
|
|
tsk_bool_t remote_use_rtcpmux = (base->M.ro && (tsdp_header_M_findA(base->M.ro, "rtcp-mux") != tsk_null));
|
|
|
|
// FIXME: for RTCP, use "RFC 3605"in addition to "rtcp-mux"
|
|
|
|
// "a=ice-mismatch" if "C=" line is not included in the candidates
|
|
if((candidate = tnet_ice_ctx_get_local_candidate_at(self->ice_ctx, 0))){ // at least one candidate
|
|
base->M.lo->port = candidate->socket->port;
|
|
|
|
tsdp_header_M_remove(base->M.lo, tsdp_htype_C);
|
|
tsdp_header_M_add_headers(base->M.lo,
|
|
TSDP_HEADER_C_VA_ARGS("IN", TNET_SOCKET_TYPE_IS_IPV6(candidate->socket->type) ? "IP6" : "IP4", candidate->socket->ip),
|
|
tsk_null);
|
|
tsdp_header_M_add_headers(base->M.lo,
|
|
TSDP_HEADER_A_VA_ARGS("ice-ufrag", candidate->ufrag),
|
|
TSDP_HEADER_A_VA_ARGS("ice-pwd", candidate->pwd),
|
|
tsk_null);
|
|
// RTCWeb
|
|
// "mid:" must not added without BUNDLE
|
|
// tsdp_header_M_add_headers(base->M.lo,
|
|
// TSDP_HEADER_A_VA_ARGS("mid", self->media_type == tmedia_audio ? "audio" : "video"),
|
|
// tsk_null);
|
|
|
|
while((candidate = tnet_ice_ctx_get_local_candidate_at(self->ice_ctx, index++))){
|
|
if(self->use_rtcpmux && remote_use_rtcpmux && candidate->comp_id == TNET_ICE_CANDIDATE_COMPID_RTCP){
|
|
continue; // do not add RTCP candidates if RTCP-MUX is activated (local + remote)
|
|
}
|
|
tsdp_header_M_add_headers(base->M.lo,
|
|
TSDP_HEADER_A_VA_ARGS("candidate", tnet_ice_candidate_tostring((tnet_ice_candidate_t*)candidate)),
|
|
tsk_null);
|
|
}
|
|
}
|
|
}
|
|
else{
|
|
if(base->M.lo->C){
|
|
tsk_strupdate(&base->M.lo->C->addr, self->rtp_manager->rtp.public_ip);
|
|
tsk_strupdate(&base->M.lo->C->addrtype, (self->use_ipv6 ? "IP6" : "IP4"));
|
|
}
|
|
base->M.lo->port = self->rtp_manager->rtp.public_port;
|
|
}
|
|
|
|
if(self->media_type == tmedia_audio){
|
|
///* 3GPP TS 24.229 - 6.1.1 General
|
|
// The UE shall include the MIME subtype "telephone-event" in the "m=" media descriptor in the SDP for audio media
|
|
// flows that support both audio codec and DTMF payloads in RTP packets as described in RFC 4733 [23].
|
|
//*/
|
|
//tsdp_header_M_add_fmt(base->M.lo, TMEDIA_CODEC_FORMAT_DTMF);
|
|
//tsdp_header_M_add_headers(base->M.lo,
|
|
// TSDP_HEADER_A_VA_ARGS("fmtp", TMEDIA_CODEC_FORMAT_DTMF" 0-15"),
|
|
// tsk_null);
|
|
//tsdp_header_M_add_headers(base->M.lo,
|
|
// TSDP_HEADER_A_VA_ARGS("rtpmap", TMEDIA_CODEC_FORMAT_DTMF" telephone-event/8000"),
|
|
// tsk_null);
|
|
}
|
|
|
|
/* QoS */
|
|
if(base->qos){
|
|
tmedia_qos_tline_t* ro_tline;
|
|
if(base->M.ro && (ro_tline = tmedia_qos_tline_from_sdp(base->M.ro))){
|
|
tmedia_qos_tline_set_ro(base->qos, ro_tline);
|
|
TSK_OBJECT_SAFE_FREE(ro_tline);
|
|
}
|
|
tmedia_qos_tline_to_sdp(base->qos, base->M.lo);
|
|
}
|
|
DONE:;
|
|
} // end-of-if(*updated)
|
|
|
|
return base->M.lo;
|
|
}
|
|
|
|
int tdav_session_av_set_ro(tdav_session_av_t* self, const struct tsdp_header_M_s* m, tsk_bool_t *updated)
|
|
{
|
|
tmedia_codecs_L_t* neg_codecs;
|
|
tsk_bool_t srtp_sdes_neg_ok = tsk_false, srtp_dtls_neg_ok = tsk_false;
|
|
tsk_bool_t is_srtp_remote_mandatory, is_srtp_dtls_remote_mandatory, is_srtp_sdes_remote_mandatory;
|
|
tsk_bool_t is_srtp_local_mandatory, is_srtp_dtls_local_enabled, is_srtp_sdes_local_enabled;
|
|
tmedia_session_t* base = TMEDIA_SESSION(self);
|
|
RTP_PROFILE_T profile_remote;
|
|
int32_t acfg_idx = -1;
|
|
|
|
if(!base || !m || !updated){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
if(!self->rtp_manager){
|
|
TSK_DEBUG_ERROR("RTP manager is null. Did you forget to prepare the session?");
|
|
return -1;
|
|
}
|
|
|
|
/* update remote offer */
|
|
TSK_OBJECT_SAFE_FREE(base->M.ro);
|
|
base->M.ro = tsk_object_ref((void*)m);
|
|
|
|
*updated = tsk_false;
|
|
|
|
// check if the RTP profile from remote party is supported or not
|
|
if((profile_remote = _sdp_profile_from_string(m->proto)) == RTP_PROFILE_NONE){
|
|
TSK_DEBUG_ERROR("%s not supported as RTP profile");
|
|
return -2;
|
|
}
|
|
// check that all options in the profile are supported
|
|
if((is_srtp_remote_mandatory = (profile_remote & RTP_PROFILE_SECURE)) && (self->srtp_mode == tmedia_srtp_mode_none)){
|
|
TSK_DEBUG_ERROR("Remote party requesting secure transport (%s) but this option is not enabled", m->proto);
|
|
return -2;
|
|
}
|
|
if((is_srtp_sdes_remote_mandatory = (profile_remote & RTP_PROFILE_SECURE_SDES) == RTP_PROFILE_SECURE_SDES) && !(self->srtp_type & tmedia_srtp_type_sdes)){
|
|
TSK_DEBUG_ERROR("Remote party requesting SRTP-SDES (%s) but this option is not enabled", m->proto);
|
|
return -2;
|
|
}
|
|
if((is_srtp_dtls_remote_mandatory = (profile_remote & RTP_PROFILE_SECURE_DTLS) == RTP_PROFILE_SECURE_DTLS) && !(self->srtp_type & tmedia_srtp_type_dtls)){
|
|
TSK_DEBUG_ERROR("Remote party requesting DTLS-DTLS (%s) but this option is not enabled", m->proto);
|
|
return -2;
|
|
}
|
|
is_srtp_local_mandatory = (self->srtp_mode == tmedia_srtp_mode_mandatory) && (self->srtp_type != tmedia_srtp_type_none);
|
|
is_srtp_dtls_local_enabled = (self->srtp_mode != tmedia_srtp_mode_none) && (self->srtp_type & tmedia_srtp_type_dtls);
|
|
is_srtp_sdes_local_enabled = (self->srtp_mode != tmedia_srtp_mode_none) && (self->srtp_type & tmedia_srtp_type_sdes);
|
|
|
|
if(base->M.lo){
|
|
if((neg_codecs = tmedia_session_match_codec(base, m))){
|
|
/* update negociated codecs */
|
|
TSK_OBJECT_SAFE_FREE(base->neg_codecs);
|
|
base->neg_codecs = neg_codecs;
|
|
*updated = tsk_true;
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("None Match");
|
|
return -1;
|
|
}
|
|
/* QoS */
|
|
if(base->qos){
|
|
tmedia_qos_tline_t* ro_tline;
|
|
if(base->M.ro && (ro_tline = tmedia_qos_tline_from_sdp(base->M.ro))){
|
|
tmedia_qos_tline_set_ro(base->qos, ro_tline);
|
|
TSK_OBJECT_SAFE_FREE(ro_tline);
|
|
}
|
|
}
|
|
/* AVPF */
|
|
if(_sdp_str_contains(base->M.lo->proto, "AVPF")){
|
|
self->use_avpf = tsk_true;
|
|
}
|
|
}
|
|
|
|
/* RFC 5939 - Session Description Protocol (SDP) Capability Negotiation */
|
|
{
|
|
sdp_acaps_xt acaps;
|
|
sdp_tcaps_xt tcaps;
|
|
|
|
_sdp_acfg_reset(&self->sdp_caps->acfg);
|
|
|
|
_sdp_acaps_reset(&acaps);
|
|
_sdp_tcaps_reset(&tcaps);
|
|
_sdp_pcfgs_reset(&self->sdp_caps->remote);
|
|
|
|
// session-level attributes
|
|
if(self->remote_sdp){
|
|
_sdp_pcfgs_from_sdp(self->remote_sdp, &acaps, &tcaps, &self->sdp_caps->remote, tsk_false);
|
|
}
|
|
// media-level attributes
|
|
_sdp_pcfgs_from_sdp(base->M.ro, &acaps, &tcaps, &self->sdp_caps->remote, tsk_false);
|
|
}
|
|
|
|
/* get connection associated to this media line
|
|
* If the connnection is global, then the manager will call tdav_session_audio_set() */
|
|
if(m->C && m->C->addr){
|
|
tsk_strupdate(&self->remote_ip, m->C->addr);
|
|
self->use_ipv6 = tsk_striequals(m->C->addrtype, "IP6");
|
|
}
|
|
/* set remote port */
|
|
self->remote_port = m->port;
|
|
|
|
/* RTCP-MUX */
|
|
self->use_rtcpmux &= (tsdp_header_M_findA(m, "rtcp-mux") != tsk_null);
|
|
if(self->ice_ctx){
|
|
tnet_ice_ctx_set_rtcpmux(self->ice_ctx, self->use_rtcpmux);
|
|
}
|
|
|
|
/* Remote SSRC */
|
|
{
|
|
// will be also updated based on received RTP packets
|
|
const tsdp_header_A_t* ssrcA = tsdp_header_M_findA(m, "ssrc");
|
|
if(ssrcA && ssrcA->value){
|
|
if(sscanf(ssrcA->value, "%u %*s", &self->rtp_manager->rtp.ssrc.remote) != EOF){
|
|
TSK_DEBUG_INFO("Remote SSRC = %u", self->rtp_manager->rtp.ssrc.remote);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* RTCWeb Type */
|
|
if(self->remote_sdp){
|
|
const tsdp_header_S_t* S = (const tsdp_header_S_t*)tsdp_message_get_header(self->remote_sdp, tsdp_htype_S);
|
|
if(S && !tsk_strnullORempty(S->value)){
|
|
struct rtcweb_type { const char* name; tmedia_rtcweb_type_t type; };
|
|
static const struct rtcweb_type rtcweb_types[] =
|
|
{
|
|
{ "firefox", tmedia_rtcweb_type_firefox },
|
|
{ "chrome", tmedia_rtcweb_type_chrome },
|
|
{ "bowser", tmedia_rtcweb_type_ericsson },
|
|
{ "doubango", tmedia_rtcweb_type_doubango },
|
|
};
|
|
static const int32_t rtcweb_types_count = sizeof(rtcweb_types)/sizeof(rtcweb_types[0]);
|
|
int32_t i;
|
|
for(i = 0; i < rtcweb_types_count; ++i){
|
|
if(_sdp_str_contains(S->value, rtcweb_types[i].name)){
|
|
trtp_manager_set_rtcweb_type_remote(self->rtp_manager, rtcweb_types[i].type);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* SRTP */
|
|
#if HAVE_SRTP
|
|
// this is SRTP negotiation -> do not trust the remote profile
|
|
if(is_srtp_dtls_local_enabled || is_srtp_sdes_local_enabled){
|
|
tsk_size_t i, j;
|
|
const sdp_acap_xt *acap;
|
|
int ret;
|
|
if(is_srtp_sdes_local_enabled){
|
|
const tsdp_header_A_t* A;
|
|
const char* cryptos[2] = { tsk_null };
|
|
|
|
/* 1. check crypto lines from the SDP */
|
|
i = 0;
|
|
while((A = tsdp_header_M_findA_at(m, "crypto", i))){
|
|
cryptos[i++] = A->value;
|
|
if(i >= (sizeof(cryptos)/sizeof(cryptos[0]))){
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* 2. check crypto lines from the caps (RFC 5939)*/
|
|
if(!cryptos[0]){
|
|
tsk_size_t k = 0;
|
|
for(i = 0; (i < SDP_CAPS_COUNT_MAX && self->sdp_caps->remote[i].tag > 0); ++i){
|
|
j = 0;
|
|
while((acap = _sdp_acaps_find_by_field(&self->sdp_caps->remote[i].acaps, "crypto", j++))){
|
|
if(k < (sizeof(cryptos)/sizeof(cryptos[0]))){
|
|
// remove "crypto: "
|
|
if((cryptos[k] = strstr(acap->value, ":")) && ++cryptos[k]){
|
|
while(isspace(*cryptos[k])) ++cryptos[k];
|
|
++k;
|
|
}
|
|
}
|
|
}
|
|
if(k != 0){ // do not mix crypto lines from different pcfgs
|
|
acfg_idx = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 3. match cryptos */
|
|
for(i = 0; i< sizeof(cryptos)/sizeof(cryptos[0]); ++i){
|
|
if(!cryptos[i]){
|
|
break;
|
|
}
|
|
if((ret = trtp_srtp_set_crypto_remote(self->rtp_manager, cryptos[i])) == 0){
|
|
srtp_sdes_neg_ok = tsk_true;
|
|
break;
|
|
}
|
|
}
|
|
} // end-of-sdes
|
|
|
|
if(!srtp_sdes_neg_ok && is_srtp_dtls_local_enabled){
|
|
int ret;
|
|
const tsdp_header_A_t *setupA = tsk_null, *fpA = tsk_null, *connectionA = tsk_null;
|
|
const char* fingerprints[4] = { tsk_null };
|
|
const char* setups[4] = { tsk_null };
|
|
const char* connections[4] = { tsk_null };
|
|
const char* connection = tsk_null;
|
|
const char* setup = tsk_null;
|
|
|
|
/* 1. check DTLS attributes from the SDP */
|
|
|
|
if(self->remote_sdp){
|
|
setupA = tsdp_message_get_headerA(self->remote_sdp, "setup");
|
|
fpA = tsdp_message_get_headerA(self->remote_sdp, "fingerprint");
|
|
connectionA = tsdp_message_get_headerA(self->remote_sdp, "connection");
|
|
}
|
|
if(!setupA) setupA = tsdp_header_M_findA(m, "setup");
|
|
if(!fpA) fpA = tsdp_header_M_findA(m, "fingerprint");
|
|
if(!connectionA) connectionA = tsdp_header_M_findA(m, "connection");
|
|
|
|
if(setupA) setups[0] = setupA->value;
|
|
if(fpA) fingerprints[0] = fpA->value;
|
|
if(connectionA) connections[0] = connectionA->value;
|
|
|
|
/* 2. check DTLS attributes from from the caps (RFC 5939) */
|
|
if(!srtp_dtls_neg_ok && !fingerprints[0]){
|
|
tsk_size_t k_fp = 0, k_st = 0, k_conn = 0;
|
|
for(i = 0; (i < SDP_CAPS_COUNT_MAX && self->sdp_caps->remote[i].tag > 0); ++i){
|
|
// "fingerprint"
|
|
j = 0;
|
|
while((acap = _sdp_acaps_find_by_field(&self->sdp_caps->remote[i].acaps, "fingerprint", j++))){
|
|
if(k_fp < (sizeof(fingerprints)/sizeof(fingerprints[0]))){
|
|
if((fingerprints[k_fp] = strstr(acap->value, ":")) && ++fingerprints[k_fp]){
|
|
while(isspace(*fingerprints[k_fp])) ++fingerprints[k_fp];
|
|
++k_fp;
|
|
}
|
|
}
|
|
}
|
|
// "setup"
|
|
j = 0;
|
|
while((acap = _sdp_acaps_find_by_field(&self->sdp_caps->remote[i].acaps, "setup", j++))){
|
|
if(k_st < (sizeof(setups)/sizeof(setups[0]))){
|
|
if((setups[k_st] = strstr(acap->value, ":")) && ++setups[k_st]){
|
|
while(isspace(*setups[k_st])) ++setups[k_st];
|
|
++k_st;
|
|
}
|
|
}
|
|
}
|
|
// "connection"
|
|
j = 0;
|
|
while((acap = _sdp_acaps_find_by_field(&self->sdp_caps->remote[i].acaps, "connection", j++))){
|
|
if(k_conn < (sizeof(connections)/sizeof(connections[0]))){
|
|
if((connections[k_conn] = strstr(acap->value, ":")) && ++connections[k_conn]){
|
|
while(isspace(*connections[k_conn])) ++connections[k_conn];
|
|
++k_conn;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(k_fp || k_st || k_conn){ // do not mix crypto lines from different pcfgs
|
|
acfg_idx = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 3. setup DTLS connection using negotiated attributes */
|
|
|
|
if(!srtp_dtls_neg_ok && fingerprints[0]){
|
|
tnet_fingerprint_t fingerprint;
|
|
char hash[16];
|
|
for(i = 0; i < sizeof(fingerprints)/sizeof(fingerprints[0]) && !srtp_dtls_neg_ok; ++i){
|
|
if(!fingerprints[i]){
|
|
break;
|
|
}
|
|
if(sscanf(fingerprints[i], "%15s %255s", hash, fingerprint) >= 2){
|
|
if((ret = trtp_manager_set_dtls_remote_fingerprint(self->rtp_manager, &fingerprint, hash)) == 0){
|
|
acfg_idx = i;
|
|
srtp_dtls_neg_ok = tsk_true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// only accept sdp without fingerprints if certificate verification is OFF
|
|
if(!srtp_dtls_neg_ok && !fingerprints[0] && !TMEDIA_SESSION(self)->dtls.verify){
|
|
for(i = 0; (i < SDP_CAPS_COUNT_MAX && self->sdp_caps->remote[i].tag > 0); ++i){
|
|
if(self->sdp_caps->remote[i].tcap.tag > 0 && (self->sdp_caps->remote[i].tcap.profile & RTP_PROFILE_SECURE_DTLS) == RTP_PROFILE_SECURE_DTLS){
|
|
acfg_idx = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// defaults
|
|
if(!connection) connection = connections[acfg_idx != -1 ? acfg_idx : 0];
|
|
if(!setup) setup = setups[acfg_idx != -1 ? acfg_idx : 0];
|
|
|
|
if((!connection || !setup) && (is_srtp_dtls_remote_mandatory || is_srtp_local_mandatory || (acfg_idx != -1 && (self->sdp_caps->remote[acfg_idx].tcap.profile & RTP_PROFILE_SECURE_DTLS) == RTP_PROFILE_SECURE_DTLS))){
|
|
if(!connection) connection = (self->dtls.local.connection_new ? "existing" : "new");
|
|
if(!setup) setup = (self->dtls.local.setup == tnet_dtls_setup_active
|
|
? "passive"
|
|
: (self->dtls.local.setup == tnet_dtls_setup_passive ? "active" : (base->M.lo ? "passive" : "active")));
|
|
}
|
|
|
|
if(connection && setup){
|
|
// update local setup according to remote setup
|
|
ret = _tdav_session_av_dtls_set_remote_setup(self,
|
|
tnet_dtls_get_setup_from_string(setup),
|
|
!tsk_striequals(connection, "existing")
|
|
);
|
|
if(ret == 0){
|
|
// pass new local values to the RTP manager
|
|
ret = trtp_manager_set_dtls_local_setup(self->rtp_manager, self->dtls.local.setup, self->dtls.local.connection_new);
|
|
srtp_dtls_neg_ok = (ret == 0);
|
|
}
|
|
}
|
|
|
|
}// end-of-dtls
|
|
}//end-of-if(srtp=optional|mandatory)
|
|
|
|
self->use_srtp = trtp_srtp_is_initialized(self->rtp_manager);
|
|
|
|
// activate the right SRTP type and disable others
|
|
trtp_manager_set_srtp_type_remote(self->rtp_manager,
|
|
srtp_sdes_neg_ok ? tmedia_srtp_type_sdes : (srtp_dtls_neg_ok ? tmedia_srtp_type_dtls : tmedia_srtp_type_none));
|
|
|
|
#endif
|
|
|
|
// set actual config
|
|
if(acfg_idx == -1){
|
|
// none matched (means SRTP negotiation failed or not enabled -> try to negotiate AVP(F))
|
|
int32_t i;
|
|
for(i = 0; (i < SDP_CAPS_COUNT_MAX && self->sdp_caps->remote[i].tag > 0); ++i){
|
|
if(self->sdp_caps->remote[i].tcap.tag > 0){
|
|
if(self->sdp_caps->remote[i].tcap.profile == RTP_PROFILE_AVPF){
|
|
acfg_idx = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if(acfg_idx != -1){
|
|
self->sdp_caps->acfg = self->sdp_caps->remote[acfg_idx];
|
|
}
|
|
|
|
if(!srtp_sdes_neg_ok && !srtp_dtls_neg_ok && (is_srtp_remote_mandatory || is_srtp_local_mandatory)){
|
|
TSK_DEBUG_ERROR("SRTP negotiation failed");
|
|
return -4;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
const tmedia_codec_t* tdav_session_av_get_best_neg_codec(const tdav_session_av_t* self)
|
|
{
|
|
const tsk_list_item_t* item;
|
|
if(!self){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return tsk_null;
|
|
}
|
|
|
|
tsk_list_foreach(item, TMEDIA_SESSION(self)->neg_codecs){
|
|
// exclude DTMF, RED and ULPFEC
|
|
if(!TDAV_IS_DTMF_CODEC(item->data) && !TDAV_IS_ULPFEC_CODEC(item->data) && !TDAV_IS_RED_CODEC(item->data)
|
|
&& TMEDIA_CODEC(item->data)->plugin && TMEDIA_CODEC(item->data)->plugin->encode && TMEDIA_CODEC(item->data)->plugin->decode){
|
|
return TMEDIA_CODEC(item->data);
|
|
}
|
|
}
|
|
return tsk_null;
|
|
}
|
|
|
|
const tmedia_codec_t* tdav_session_av_get_red_codec(const tdav_session_av_t* self)
|
|
{
|
|
const tsk_list_item_t* item;
|
|
if(!self){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return tsk_null;
|
|
}
|
|
|
|
tsk_list_foreach(item, TMEDIA_SESSION(self)->neg_codecs){
|
|
const tmedia_codec_t* codec = (const tmedia_codec_t*)item->data;
|
|
if(TDAV_IS_RED_CODEC(codec)){
|
|
return TMEDIA_CODEC(item->data);
|
|
}
|
|
}
|
|
return tsk_null;
|
|
}
|
|
|
|
static void* TSK_STDCALL _tdav_session_av_error_async_thread(void* usrdata)
|
|
{
|
|
if(usrdata){
|
|
tdav_session_av_t* self = (tdav_session_av_t*)usrdata;
|
|
tsk_safeobj_lock(self);
|
|
if(TMEDIA_SESSION(self)->onerror_cb.fun){
|
|
TMEDIA_SESSION(self)->onerror_cb.fun(TMEDIA_SESSION(self)->onerror_cb.usrdata, TMEDIA_SESSION(self), self->last_error.reason, self->last_error.is_fatal);
|
|
}
|
|
tsk_safeobj_unlock(self);
|
|
tsk_object_unref(self); // see _tdav_session_av_raise_error_async()
|
|
}
|
|
return tsk_null;
|
|
}
|
|
|
|
static int _tdav_session_av_raise_error_async(struct tdav_session_av_s* self, tsk_bool_t is_fatal, const char* reason)
|
|
{
|
|
int ret;
|
|
if(!self){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
tsk_safeobj_lock(self);
|
|
|
|
tsk_object_ref(self); // see _tdav_session_av_error_async_thread()
|
|
|
|
if(self->last_error.tid[0]){
|
|
tsk_thread_join(self->last_error.tid);
|
|
}
|
|
|
|
self->last_error.is_fatal = is_fatal;
|
|
tsk_strupdate(&self->last_error.reason, reason);
|
|
if((ret = tsk_thread_create(self->last_error.tid, _tdav_session_av_error_async_thread, self)) != 0){
|
|
tsk_object_unref(self);
|
|
goto bail;
|
|
}
|
|
|
|
bail:
|
|
tsk_safeobj_unlock(self);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#if HAVE_SRTP
|
|
static int _tdav_session_av_srtp_dtls_cb(const void* usrdata, enum trtp_srtp_dtls_event_type_e type, const char* reason)
|
|
{
|
|
tdav_session_av_t* self = (tdav_session_av_t*)usrdata;
|
|
|
|
tsk_safeobj_lock(self);
|
|
switch(type){
|
|
case trtp_srtp_dtls_event_type_handshake_failed:
|
|
case trtp_srtp_dtls_event_type_fatal_error:
|
|
{
|
|
if(TMEDIA_SESSION(self)->onerror_cb.fun){
|
|
static const tsk_bool_t __is_fatal = tsk_true;
|
|
_tdav_session_av_raise_error_async(self, __is_fatal, reason);
|
|
}
|
|
break;
|
|
}
|
|
case trtp_srtp_dtls_event_type_handshake_succeed:
|
|
{
|
|
break;
|
|
}
|
|
case trtp_srtp_dtls_event_type_started:
|
|
{
|
|
// start producer and consumer
|
|
if(self->rtp_manager && self->rtp_manager->is_started){
|
|
if(self->consumer) tmedia_consumer_start(self->consumer);
|
|
if(self->producer) tmedia_producer_start(self->producer);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
tsk_safeobj_unlock(self);
|
|
|
|
return 0;
|
|
}
|
|
#endif /* HAVE_SRTP */
|
|
|
|
static int _tdav_session_av_red_cb(const void* usrdata, const struct trtp_rtp_packet_s* packet)
|
|
{
|
|
tdav_session_av_t* self = (tdav_session_av_t*)usrdata;
|
|
if(self->rtp_manager && self->rtp_manager->rtp.cb.fun){
|
|
return self->rtp_manager->rtp.cb.fun(self->rtp_manager->rtp.cb.usrdata, packet);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int _tdav_session_av_dtls_set_remote_setup(struct tdav_session_av_s* self, tnet_dtls_setup_t setup, tsk_bool_t connection_new)
|
|
{
|
|
if(self){
|
|
TSK_DEBUG_INFO("dtls.remote.setup=%s", TNET_DTLS_SETUP_NAMES[(int)setup]);
|
|
self->dtls.remote.setup = setup;
|
|
self->dtls.remote.connection_new = connection_new;
|
|
switch(self->dtls.remote.setup){
|
|
case tnet_dtls_setup_none:
|
|
default:
|
|
self->dtls.local.setup = tnet_dtls_setup_actpass;
|
|
self->dtls.local.connection_new = tsk_true; // RTP transport always unprepared for reINVITE/UPDATE -> new connection
|
|
break;
|
|
case tnet_dtls_setup_active:
|
|
self->dtls.local.setup = tnet_dtls_setup_passive;
|
|
self->dtls.local.connection_new = tsk_true;
|
|
break;
|
|
case tnet_dtls_setup_passive:
|
|
self->dtls.local.setup = tnet_dtls_setup_active;
|
|
self->dtls.local.connection_new = tsk_true;
|
|
break;
|
|
case tnet_dtls_setup_actpass:
|
|
self->dtls.local.setup = (self->dtls.local.setup == tnet_dtls_setup_actpass || self->dtls.local.setup == tnet_dtls_setup_active)
|
|
? tnet_dtls_setup_active
|
|
: tnet_dtls_setup_passive;
|
|
self->dtls.local.connection_new = tsk_true;
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
const tmedia_codec_t* tdav_session_av_get_ulpfec_codec(const tdav_session_av_t* self)
|
|
{
|
|
const tsk_list_item_t* item;
|
|
if(!self){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return tsk_null;
|
|
}
|
|
|
|
tsk_list_foreach(item, TMEDIA_SESSION(self)->neg_codecs){
|
|
if(TDAV_IS_ULPFEC_CODEC(item->data)){
|
|
return TMEDIA_CODEC(item->data);
|
|
}
|
|
}
|
|
return tsk_null;
|
|
}
|
|
|
|
int tdav_session_av_deinit(tdav_session_av_t* self)
|
|
{
|
|
if(!self){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
/* deinit self (rtp manager should be destroyed after the producer) */
|
|
TSK_OBJECT_SAFE_FREE(self->consumer);
|
|
TSK_OBJECT_SAFE_FREE(self->producer);
|
|
TSK_OBJECT_SAFE_FREE(self->rtp_manager);
|
|
TSK_OBJECT_SAFE_FREE(self->sdp_caps);
|
|
TSK_OBJECT_SAFE_FREE(self->remote_sdp);
|
|
TSK_OBJECT_SAFE_FREE(self->local_sdp);
|
|
TSK_FREE(self->remote_ip);
|
|
TSK_FREE(self->local_ip);
|
|
|
|
/* RED and ULPFEC codecs */
|
|
TSK_OBJECT_SAFE_FREE(self->red.codec);
|
|
TSK_OBJECT_SAFE_FREE(self->ulpfec.codec);
|
|
|
|
/* NAT Traversal context */
|
|
TSK_OBJECT_SAFE_FREE(self->natt_ctx);
|
|
TSK_OBJECT_SAFE_FREE(self->ice_ctx);
|
|
|
|
/* Last error */
|
|
if(self->last_error.tid[0]){
|
|
tsk_thread_join(self->last_error.tid);
|
|
}
|
|
TSK_FREE(self->last_error.reason);
|
|
|
|
tsk_safeobj_deinit(self);
|
|
|
|
/* deinit base */
|
|
tmedia_session_deinit(TMEDIA_SESSION(self));
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static const tsdp_header_A_t* _sdp_findA_at(const sdp_headerM_Or_Message* sdp, const char* field, tsk_size_t index)
|
|
{
|
|
if(sdp){
|
|
if(TSK_OBJECT_HEADER(sdp)->__def__ == tsdp_message_def_t){
|
|
return tsdp_message_get_headerA_at((const tsdp_message_t*)sdp, field, index);
|
|
}
|
|
else if(TSK_OBJECT_HEADER(sdp)->__def__ == tsdp_header_M_def_t){
|
|
return tsdp_header_M_findA_at((const tsdp_header_M_t*)sdp, field, index);
|
|
}
|
|
}
|
|
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return tsk_null;
|
|
}
|
|
|
|
static int _sdp_add_headerA(sdp_headerM_Or_Message* sdp, const char* field, const char* value)
|
|
{
|
|
if(sdp && field){
|
|
if(TSK_OBJECT_HEADER(sdp)->__def__ == tsdp_message_def_t){
|
|
return tsdp_message_add_headers((tsdp_message_t*)sdp,
|
|
TSDP_HEADER_A_VA_ARGS(field, value),
|
|
tsk_null);
|
|
}
|
|
else if(TSK_OBJECT_HEADER(sdp)->__def__ == tsdp_header_M_def_t){
|
|
return tsdp_header_M_add_headers((tsdp_header_M_t*)sdp,
|
|
TSDP_HEADER_A_VA_ARGS(field, value),
|
|
tsk_null);
|
|
}
|
|
}
|
|
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
static RTP_PROFILE_T _sdp_profile_from_string(const char* profile)
|
|
{
|
|
int32_t i;
|
|
for(i = 0; i < RTP_PROFILES_COUNT; ++i){
|
|
if(tsk_striequals(RTP_PROFILES[i].name, profile)){
|
|
return RTP_PROFILES[i].type;
|
|
}
|
|
}
|
|
return RTP_PROFILE_NONE;
|
|
}
|
|
|
|
static const char* _sdp_profile_to_string(RTP_PROFILE_T profile)
|
|
{
|
|
int32_t i;
|
|
for(i = 0; i < RTP_PROFILES_COUNT; ++i){
|
|
if(RTP_PROFILES[i].type == profile){
|
|
return RTP_PROFILES[i].name;
|
|
}
|
|
}
|
|
return tsk_null;
|
|
}
|
|
|
|
_SDP_DECLARE_INDEX_OF(acap);
|
|
|
|
static const sdp_acap_xt* _sdp_acaps_find_by_field(const sdp_acap_xt (*acaps)[SDP_CAPS_COUNT_MAX], const char* field, int32_t index)
|
|
{
|
|
int32_t i, j, k, size;
|
|
|
|
if(!acaps || !field){
|
|
TSK_DEBUG_ERROR("Invalid paramter");
|
|
return tsk_null;
|
|
}
|
|
|
|
i = 0, j = 0;
|
|
size = tsk_strlen(field);
|
|
while((*acaps)[j].tag && j < SDP_CAPS_COUNT_MAX){
|
|
k = _sdp_str_index_of((*acaps)[j].value, field);
|
|
if(k == 0 && (*acaps)[j].value[size] == ':'){
|
|
if(i == index){
|
|
return &(*acaps)[j];
|
|
}
|
|
++i;
|
|
}
|
|
++j;
|
|
}
|
|
return tsk_null;
|
|
}
|
|
|
|
static int _sdp_acaps_from_sdp(const sdp_headerM_Or_Message* sdp, sdp_acap_xt (*acaps)[SDP_CAPS_COUNT_MAX], tsk_bool_t reset)
|
|
{
|
|
tsk_size_t acaps_count, acaps_idx;
|
|
const tsdp_header_A_t* A;
|
|
int32_t tag, index, size;
|
|
|
|
if(!sdp || !acaps){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
|
|
if(reset){
|
|
_sdp_acaps_reset(acaps);
|
|
acaps_count = 0;
|
|
}
|
|
else{
|
|
if((acaps_count = _sdp_acaps_indexof(acaps, 0)) == -1){
|
|
TSK_DEBUG_ERROR("No room to append items");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
acaps_idx = 0;
|
|
while((A = _sdp_findA_at(sdp, "acap", acaps_idx++))){
|
|
if(!(size = tsk_strlen(A->value))){
|
|
goto next;
|
|
}
|
|
if(sscanf(A->value, "%d", &tag) == EOF){
|
|
TSK_DEBUG_ERROR("sscanf(%s) failed", A->value);
|
|
break;
|
|
}
|
|
if(tag <= 0 || (tag + 1) > SDP_CAPS_COUNT_MAX){
|
|
TSK_DEBUG_WARN("Ignoring tag with value = %d");
|
|
goto next;
|
|
}
|
|
|
|
index = _sdp_integer_length(tag) + 1;/*SPACE*/
|
|
if(index >= size){
|
|
TSK_DEBUG_WARN("a=%s is empty", A->value);
|
|
goto next;
|
|
}
|
|
|
|
(*acaps)[acaps_count].tag = tag;
|
|
(*acaps)[acaps_count].value = &A->value[index];
|
|
next:
|
|
if(++acaps_count >= SDP_CAPS_COUNT_MAX){
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
_SDP_DECLARE_INDEX_OF(tcap);
|
|
|
|
static int _sdp_tcaps_from_sdp(const sdp_headerM_Or_Message* sdp, sdp_tcap_xt (*tcaps)[SDP_CAPS_COUNT_MAX], tsk_bool_t reset)
|
|
{
|
|
tsk_size_t tcaps_count, tcaps_idx, profiles_count;
|
|
const tsdp_header_A_t* A;
|
|
int32_t tag, index, size, tag_fake;
|
|
char tcap[256];
|
|
|
|
if(!sdp || !tcaps){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
if(reset){
|
|
_sdp_tcaps_reset(tcaps);
|
|
tcaps_count = 0;
|
|
}
|
|
else{
|
|
if((tcaps_count = _sdp_tcaps_indexof(tcaps, 0)) == -1){
|
|
TSK_DEBUG_ERROR("No room to append items");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
profiles_count = 0;
|
|
index = 0;
|
|
tcaps_idx = 0;
|
|
while((A = _sdp_findA_at(sdp, "tcap", tcaps_idx++))){
|
|
if(!(size = tsk_strlen(A->value))){
|
|
goto next;
|
|
}
|
|
if(sscanf(&A->value[index], "%d", &tag) == EOF || (_sdp_integer_length(tag) + 1 >= size)){
|
|
TSK_DEBUG_ERROR("sscanf(%s) failed", A->value);
|
|
break;
|
|
}
|
|
if(tag <= 0 || (tag + 1) > SDP_CAPS_COUNT_MAX){
|
|
TSK_DEBUG_WARN("Ignoring tag with value = %d", tag);
|
|
goto next;
|
|
}
|
|
|
|
index += _sdp_integer_length(tag) + 1/*SPACE*/;
|
|
|
|
profiles_count = 0;
|
|
tag_fake = tag;
|
|
while(sscanf(&A->value[index], "%255s", &tcap) != EOF){
|
|
if(tag_fake < SDP_CAPS_COUNT_MAX){
|
|
(*tcaps)[tcaps_count + profiles_count].tag = tag_fake;
|
|
(*tcaps)[tcaps_count + profiles_count].profile = _sdp_profile_from_string(tcap); // split profiles
|
|
}
|
|
if((index += tsk_strlen(tcap) + 1/*SPACE*/) >= size){
|
|
break;
|
|
}
|
|
++tag_fake;
|
|
++profiles_count;
|
|
}
|
|
next:
|
|
if(++tcaps_count >= SDP_CAPS_COUNT_MAX){
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int _sdp_acfg_to_sdp(sdp_headerM_Or_Message* sdp, const sdp_acfg_xt *acfg)
|
|
{
|
|
int32_t i_a_caps;
|
|
char *acfg_str = tsk_null;
|
|
|
|
if(!sdp || !acfg || acfg->tag <= 0){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
// acfg: tag
|
|
tsk_strcat_2(&acfg_str, "%d", acfg->tag);
|
|
// acfg: t=
|
|
if(acfg_str && acfg->tcap.tag > 0){
|
|
tsk_strcat_2(&acfg_str, " t=%d", acfg->tcap.tag);
|
|
}
|
|
// acfg: a=
|
|
for (i_a_caps = 0; acfg_str && i_a_caps < SDP_CAPS_COUNT_MAX; ++i_a_caps){
|
|
if(acfg->acaps[i_a_caps].tag <= 0){
|
|
break;
|
|
}
|
|
if(i_a_caps == 0){
|
|
tsk_strcat_2(&acfg_str, " a=%d", acfg->acaps[i_a_caps].tag);
|
|
}
|
|
else{
|
|
tsk_strcat_2(&acfg_str, "%s%s%d%s", // e.g. |2 or ,6 or ,[2]
|
|
acfg->acaps[i_a_caps].or ? "|" : ",",
|
|
acfg->acaps[i_a_caps].optional ? "[" : "",
|
|
acfg->acaps[i_a_caps].tag,
|
|
acfg->acaps[i_a_caps].optional ? "]" : ""
|
|
);
|
|
}
|
|
}
|
|
|
|
// a=acfg:
|
|
if(acfg_str){
|
|
_sdp_add_headerA(sdp, "acfg", acfg_str);
|
|
TSK_FREE(acfg_str);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
_SDP_DECLARE_INDEX_OF(pcfg);
|
|
|
|
static int _sdp_pcfgs_from_sdp(const sdp_headerM_Or_Message* sdp, sdp_acap_xt (*acaps)[SDP_CAPS_COUNT_MAX], sdp_tcap_xt (*tcaps)[SDP_CAPS_COUNT_MAX], sdp_pcfg_xt (*pcfgs)[SDP_CAPS_COUNT_MAX], tsk_bool_t reset)
|
|
{
|
|
tsk_size_t pcfgs_count, pcfgs_idx;
|
|
const tsdp_header_A_t* A;
|
|
int32_t tag, index = 0, size, t, a_tag, indexof;
|
|
sdp_tcap_xt* tcap_curr;
|
|
int ret;
|
|
char pcfg[256], a[256];
|
|
|
|
if(!sdp || !acaps || !tcaps || !pcfgs){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
if((ret = _sdp_tcaps_from_sdp(sdp, tcaps, reset))){
|
|
return ret;
|
|
}
|
|
if((ret = _sdp_acaps_from_sdp(sdp, acaps, reset))){
|
|
return ret;
|
|
}
|
|
|
|
if(reset){
|
|
_sdp_pcfgs_reset(pcfgs);
|
|
pcfgs_count = 0;
|
|
}
|
|
else{
|
|
if((pcfgs_count = _sdp_pcfgs_indexof(pcfgs, 0)) == -1){
|
|
TSK_DEBUG_ERROR("No room to append items");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
pcfgs_idx = 0;
|
|
tcap_curr = tsk_null;
|
|
while((A = _sdp_findA_at(sdp, "pcfg", pcfgs_idx++))){
|
|
if(!(size = tsk_strlen(A->value))){
|
|
goto next_A;
|
|
}
|
|
if(sscanf(A->value, "%d", &tag) == EOF || (_sdp_integer_length(tag) + 1 >= size)){
|
|
TSK_DEBUG_ERROR("sscanf(%s) failed", A->value);
|
|
break;
|
|
}
|
|
if(tag <= 0 || (tag + 1) > SDP_CAPS_COUNT_MAX){
|
|
TSK_DEBUG_WARN("Ignoring tag with value = %d");
|
|
goto next_A;
|
|
}
|
|
|
|
(*pcfgs)[pcfgs_count].tag = tag;
|
|
|
|
index = _sdp_integer_length(tag) + 1/*SPACE*/;
|
|
|
|
while(sscanf(&A->value[index], "%255s", &pcfg) != EOF){
|
|
if(_sdp_str_starts_with(&A->value[index], "t=") && sscanf(pcfg, "t=%d", &t) != EOF){
|
|
if(t <= 0 || t + 1 >= SDP_CAPS_COUNT_MAX){
|
|
TSK_DEBUG_ERROR("t = %d ignored", t);
|
|
goto next_pcfg;
|
|
}
|
|
// tcap is something like a=tcap:1 RTP/SAVPF RTP/SAVP RTP/AVPF
|
|
// tcap [2] is "RTP/SAVP" -> not indexed by tag
|
|
tcap_curr = &(*pcfgs)[pcfgs_count].tcap;
|
|
if((indexof = _sdp_tcaps_indexof(tcaps, t)) == -1){
|
|
TSK_DEBUG_ERROR("Failed to find 'tcap' with tag=%d", t);
|
|
goto next_pcfg;
|
|
}
|
|
*tcap_curr = (*tcaps)[indexof];
|
|
}
|
|
else{
|
|
if(_sdp_str_starts_with(&A->value[index], "a=") && sscanf(pcfg, "a=%255s", a) != EOF){
|
|
char a_copy[sizeof(a)], *pch;
|
|
tsk_size_t pcfg_acfgs_count = 0;
|
|
sdp_acap_xt* acap;
|
|
memcpy(a_copy, a, sizeof(a));
|
|
|
|
pch = strtok (a, ",[]|");
|
|
while(pch){
|
|
a_tag = atoi(pch);
|
|
if(a_tag <= 0 || a_tag + 1 >= SDP_CAPS_COUNT_MAX){
|
|
TSK_DEBUG_ERROR("a = %d ignored", a_tag);
|
|
goto next_a;
|
|
}
|
|
if((indexof = _sdp_acaps_indexof(acaps, a_tag)) == -1){
|
|
TSK_DEBUG_ERROR("Failed to find 'acap' with tag=%d", a_tag);
|
|
goto next_a;
|
|
}
|
|
acap = &(*pcfgs)[pcfgs_count].acaps[pcfg_acfgs_count++];
|
|
*acap = (*acaps)[indexof];
|
|
acap->optional = (pch != a && a_copy[pch - a - 1] == '[') ? 1 : 0;
|
|
acap->or = (pch != a && a_copy[pch - a - 1] == '|') ? 1 : 0;
|
|
next_a:
|
|
pch = strtok (NULL, ",[]|");
|
|
}
|
|
}
|
|
tcap_curr = tsk_null;
|
|
}
|
|
next_pcfg:
|
|
if((index += tsk_strlen(pcfg) + 1/*SPACE*/) >= size){
|
|
break;
|
|
}
|
|
}
|
|
next_A:
|
|
if(++pcfgs_count >= SDP_CAPS_COUNT_MAX){
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int _sdp_pcfgs_to_sdp(sdp_headerM_Or_Message* sdp, const sdp_pcfg_xt (*pcfgs)[SDP_CAPS_COUNT_MAX])
|
|
{
|
|
int32_t i_pcfgs, i_a_caps, i_serialized_acaps;
|
|
char *pcfg = tsk_null, *acap = tsk_null, *tcap = tsk_null;
|
|
sdp_acaps_xt serialized_acaps; /* to avoid duplication */
|
|
|
|
if(!sdp || !pcfgs){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
// compact(a=tcap:)
|
|
// tcap:1 RTP/AVP
|
|
// tcap:2 RTP/SAVP
|
|
// tcap:3 RTP/SAVPF
|
|
// will be compacted as
|
|
// tcap:1 RTP/AVP RTP/SAVP RTP/SAVPF
|
|
for (i_pcfgs = 0; i_pcfgs < SDP_CAPS_COUNT_MAX; ++i_pcfgs){
|
|
if((*pcfgs)[i_pcfgs].tag <= 0 || (*pcfgs)[i_pcfgs].tcap.tag <= 0){
|
|
break;
|
|
}
|
|
if(!tcap){
|
|
tsk_sprintf(&tcap, "1 %s", _sdp_profile_to_string((*pcfgs)[i_pcfgs].tcap.profile));
|
|
}
|
|
else{
|
|
tsk_strcat_2(&tcap, " %s", _sdp_profile_to_string((*pcfgs)[i_pcfgs].tcap.profile));
|
|
}
|
|
}
|
|
if(tcap){
|
|
_sdp_add_headerA(sdp, "tcap", tcap);
|
|
TSK_FREE(tcap);
|
|
}
|
|
|
|
_sdp_acaps_reset(&serialized_acaps);
|
|
i_serialized_acaps = 0;
|
|
|
|
for (i_pcfgs = 0; i_pcfgs < SDP_CAPS_COUNT_MAX; ++i_pcfgs){
|
|
if((*pcfgs)[i_pcfgs].tag <= 0){
|
|
break;
|
|
}
|
|
// pcfg: tag
|
|
tsk_strcat_2(&pcfg, "%d", (*pcfgs)[i_pcfgs].tag);
|
|
// pcfg: t=
|
|
if((*pcfgs)[i_pcfgs].tcap.tag > 0){
|
|
tsk_strcat_2(&pcfg, " t=%d", (*pcfgs)[i_pcfgs].tcap.tag);
|
|
}
|
|
|
|
// pcfg: a=
|
|
for (i_a_caps = 0; i_a_caps < SDP_CAPS_COUNT_MAX; ++i_a_caps){
|
|
if((*pcfgs)[i_pcfgs].acaps[i_a_caps].tag <= 0){
|
|
break;
|
|
}
|
|
if(i_a_caps == 0){
|
|
tsk_strcat_2(&pcfg, " a=%d", (*pcfgs)[i_pcfgs].acaps[i_a_caps].tag);
|
|
}
|
|
else{
|
|
tsk_strcat_2(&pcfg, "%s%s%d%s", // e.g. |2 or ,6 or ,[2]
|
|
(*pcfgs)[i_pcfgs].acaps[i_a_caps].or ? "|" : ",",
|
|
(*pcfgs)[i_pcfgs].acaps[i_a_caps].optional ? "[" : "",
|
|
(*pcfgs)[i_pcfgs].acaps[i_a_caps].tag,
|
|
(*pcfgs)[i_pcfgs].acaps[i_a_caps].optional ? "]" : ""
|
|
);
|
|
}
|
|
// a=acap:
|
|
if(_sdp_acaps_indexof(&serialized_acaps, (*pcfgs)[i_pcfgs].acaps[i_a_caps].tag) == -1){
|
|
tsk_sprintf(&acap, "%d %s", (*pcfgs)[i_pcfgs].acaps[i_a_caps].tag, (*pcfgs)[i_pcfgs].acaps[i_a_caps].value);
|
|
if(acap){
|
|
_sdp_add_headerA(sdp, "acap", acap);
|
|
TSK_FREE(acap);
|
|
serialized_acaps[i_serialized_acaps++].tag = (*pcfgs)[i_pcfgs].acaps[i_a_caps].tag;
|
|
}
|
|
}
|
|
}
|
|
|
|
// a=pcfg:
|
|
if(pcfg){
|
|
_sdp_add_headerA(sdp, "pcfg", pcfg);
|
|
TSK_FREE(pcfg);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int _sdp_pcfg_ensure(sdp_headerM_Or_Message* sdp, const sdp_pcfg_xt* pcfg)
|
|
{
|
|
int32_t i, n;
|
|
char field[256];
|
|
|
|
if(!sdp || !pcfg || pcfg->tag <=0){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
if(TSK_OBJECT_HEADER(sdp)->__def__ == tsdp_header_M_def_t && pcfg->tcap.profile != RTP_PROFILE_NONE){
|
|
tsk_strupdate(&((tsdp_header_M_t*)sdp)->proto, _sdp_profile_to_string(pcfg->tcap.profile));
|
|
}
|
|
|
|
for(i = 0; i < SDP_CAPS_COUNT_MAX && pcfg->acaps[i].tag > 0; ++i){
|
|
if(sscanf(pcfg->acaps[i].value, "%255s%*s", field) != EOF && (n = tsk_strlen(field)) > 2){
|
|
field[n - 2] = '\0';
|
|
_sdp_add_headerA(sdp, field, &pcfg->acaps[i].value[n + 1/*SPACE*/]);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int _sdp_pcfgs_cat(const sdp_pcfg_xt (*pcfgs_src)[SDP_CAPS_COUNT_MAX], sdp_pcfg_xt (*pcfgs_dst)[SDP_CAPS_COUNT_MAX])
|
|
{
|
|
int32_t i, j;
|
|
if(!pcfgs_src || !pcfgs_dst){
|
|
TSK_DEBUG_ERROR("Invalid parameter");
|
|
return -1;
|
|
}
|
|
|
|
for(i = 0; i < SDP_CAPS_COUNT_MAX && (*pcfgs_dst)[i].tag > 0; ++i);
|
|
|
|
j = 0;
|
|
while (i < SDP_CAPS_COUNT_MAX && j < SDP_CAPS_COUNT_MAX){
|
|
if((*pcfgs_src)[j].tag > 0){
|
|
(*pcfgs_dst)[i++] = (*pcfgs_src)[j++];
|
|
}
|
|
else break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static tsk_object_t* tdav_sdp_caps_ctor(tsk_object_t * self, va_list * app)
|
|
{
|
|
tdav_sdp_caps_t *caps = self;
|
|
if(caps){
|
|
}
|
|
return self;
|
|
}
|
|
static tsk_object_t* tdav_sdp_caps_dtor(tsk_object_t * self)
|
|
{
|
|
tdav_sdp_caps_t *caps = self;
|
|
if(caps){
|
|
}
|
|
return self;
|
|
}
|
|
static const tsk_object_def_t tdav_sdp_caps_def_s =
|
|
{
|
|
sizeof(tdav_sdp_caps_t),
|
|
tdav_sdp_caps_ctor,
|
|
tdav_sdp_caps_dtor,
|
|
tsk_null,
|
|
};
|
|
|
|
static tdav_sdp_caps_t* tdav_sdp_caps_create()
|
|
{
|
|
return tsk_object_new(&tdav_sdp_caps_def_s);
|
|
} |