3 Copyright (C) 2010 Simon MORLAT (simon.morlat@free.fr)
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version 2
8 of the License, or (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 This header files defines the Signaling Abstraction Layer.
22 The purpose of this layer is too allow experiment different call signaling
23 protocols and implementations under linphone, for example SIP, JINGLE...
29 #include "mediastreamer2/mscommon.h"
30 #include "ortp/ortp_srtp.h"
32 /*Dirty hack, keep in sync with mediastreamer2/include/mediastream.h */
33 #ifndef PAYLOAD_TYPE_FLAG_CAN_RECV
34 #define PAYLOAD_TYPE_FLAG_CAN_RECV PAYLOAD_TYPE_USER_FLAG_1
35 #define PAYLOAD_TYPE_FLAG_CAN_SEND PAYLOAD_TYPE_USER_FLAG_2
39 typedef struct Sal Sal;
43 typedef struct SalOp SalOp;
47 typedef struct SalAddress SalAddress;
50 SalTransportUDP, /*UDP*/
51 SalTransportTCP, /*TCP*/
52 SalTransportTLS, /*TLS*/
53 SalTransportDTLS /*DTLS*/
56 #define SAL_MEDIA_DESCRIPTION_UNCHANGED 0x00
57 #define SAL_MEDIA_DESCRIPTION_NETWORK_CHANGED 0x01
58 #define SAL_MEDIA_DESCRIPTION_CODEC_CHANGED 0x02
59 #define SAL_MEDIA_DESCRIPTION_CRYPTO_CHANGED 0x04
60 #define SAL_MEDIA_DESCRIPTION_CHANGED (SAL_MEDIA_DESCRIPTION_NETWORK_CHANGED | SAL_MEDIA_DESCRIPTION_CODEC_CHANGED | SAL_MEDIA_DESCRIPTION_CRYPTO_CHANGED)
62 const char* sal_transport_to_string(SalTransport transport);
63 SalTransport sal_transport_parse(const char*);
64 /* Address manipulation API*/
65 SalAddress * sal_address_new(const char *uri);
66 SalAddress * sal_address_clone(const SalAddress *addr);
67 const char *sal_address_get_scheme(const SalAddress *addr);
68 const char *sal_address_get_display_name(const SalAddress* addr);
69 char *sal_address_get_display_name_unquoted(const SalAddress *addr);
70 const char *sal_address_get_username(const SalAddress *addr);
71 const char *sal_address_get_domain(const SalAddress *addr);
72 const char * sal_address_get_port(const SalAddress *addr);
73 int sal_address_get_port_int(const SalAddress *addr);
74 SalTransport sal_address_get_transport(const SalAddress* addr);
76 void sal_address_set_display_name(SalAddress *addr, const char *display_name);
77 void sal_address_set_username(SalAddress *addr, const char *username);
78 void sal_address_set_domain(SalAddress *addr, const char *host);
79 void sal_address_set_port(SalAddress *addr, const char *port);
80 void sal_address_set_port_int(SalAddress *uri, int port);
81 void sal_address_clean(SalAddress *addr);
82 char *sal_address_as_string(const SalAddress *u);
83 char *sal_address_as_string_uri_only(const SalAddress *u);
84 void sal_address_destroy(SalAddress *u);
85 void sal_address_set_param(SalAddress *u,const char* name,const char* value);
86 void sal_address_set_transport(SalAddress* addr,SalTransport transport);
90 void sal_uninit(Sal* sal);
91 void sal_set_user_pointer(Sal *sal, void *user_data);
92 void *sal_get_user_pointer(const Sal *sal);
114 #define SAL_ENDPOINT_CANDIDATE_MAX 2
116 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN 64
117 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_FOUNDATION_LEN 32
118 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_TYPE_LEN 6
120 typedef struct SalIceCandidate {
121 char addr[SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN];
122 char raddr[SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN];
123 char foundation[SAL_MEDIA_DESCRIPTION_MAX_ICE_FOUNDATION_LEN];
124 char type[SAL_MEDIA_DESCRIPTION_MAX_ICE_TYPE_LEN];
125 unsigned int componentID;
126 unsigned int priority;
131 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES 10
133 typedef struct SalIceRemoteCandidate {
134 char addr[SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN];
136 } SalIceRemoteCandidate;
138 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES 2
140 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN 256
141 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN 256
143 typedef struct SalSrtpCryptoAlgo {
145 enum ortp_srtp_crypto_suite_t algo;
146 /* 41= 40 max(key_length for all algo) + '\0' */
150 #define SAL_CRYPTO_ALGO_MAX 4
152 typedef struct SalStreamDescription{
160 MSList *payloads; //<list of PayloadType
164 SalSrtpCryptoAlgo crypto[SAL_CRYPTO_ALGO_MAX];
165 unsigned int crypto_local_tag;
167 SalIceCandidate ice_candidates[SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES];
168 SalIceRemoteCandidate ice_remote_candidates[SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES];
169 char ice_ufrag[SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN];
170 char ice_pwd[SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN];
172 bool_t ice_completed;
173 } SalStreamDescription;
175 #define SAL_MEDIA_DESCRIPTION_MAX_STREAMS 4
177 typedef struct SalMediaDescription{
181 int n_active_streams;
184 unsigned int session_ver;
185 unsigned int session_id;
186 SalStreamDescription streams[SAL_MEDIA_DESCRIPTION_MAX_STREAMS];
187 char ice_ufrag[SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN];
188 char ice_pwd[SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN];
190 bool_t ice_completed;
191 } SalMediaDescription;
193 typedef struct SalMessage{
197 const char *message_id;
200 #define SAL_MEDIA_DESCRIPTION_MAX_MESSAGE_ATTRIBUTES 5
202 SalMediaDescription *sal_media_description_new();
203 void sal_media_description_ref(SalMediaDescription *md);
204 void sal_media_description_unref(SalMediaDescription *md);
205 bool_t sal_media_description_empty(const SalMediaDescription *md);
206 int sal_media_description_equals(const SalMediaDescription *md1, const SalMediaDescription *md2);
207 bool_t sal_media_description_has_dir(const SalMediaDescription *md, SalStreamDir dir);
208 SalStreamDescription *sal_media_description_find_stream(SalMediaDescription *md,
209 SalMediaProto proto, SalStreamType type);
210 void sal_media_description_set_dir(SalMediaDescription *md, SalStreamDir stream_dir);
212 /*this structure must be at the first byte of the SalOp structure defined by implementors*/
213 typedef struct SalOpBase{
215 char *route; /*or request-uri for REGISTER*/
221 SalMediaDescription *local_media;
222 SalMediaDescription *remote_media;
225 char *remote_contact;
229 typedef enum SalError{
232 SalErrorFailure, /* see SalReason for more details */
236 typedef enum SalReason{
240 SalReasonTemporarilyUnavailable,
242 SalReasonDoNotDisturb,
248 typedef enum SalPresenceStatus{
252 SalPresenceBerightback,
254 SalPresenceOnthephone,
255 SalPresenceOuttolunch,
256 SalPresenceDonotdisturb,
258 SalPresenceAltService,
261 typedef enum SalReferStatus{
267 typedef enum SalSubscribeStatus{
269 SalSubscribeTerminated
272 typedef enum SalTextDeliveryStatus{
273 SalTextDeliveryInProgress,
275 SalTextDeliveryFailed
276 }SalTextDeliveryStatus;
278 typedef void (*SalOnCallReceived)(SalOp *op);
279 typedef void (*SalOnCallRinging)(SalOp *op);
280 typedef void (*SalOnCallAccepted)(SalOp *op);
281 typedef void (*SalOnCallAck)(SalOp *op);
282 typedef void (*SalOnCallUpdating)(SalOp *op);/*< Called when a reINVITE is received*/
283 typedef void (*SalOnCallTerminated)(SalOp *op, const char *from);
284 typedef void (*SalOnCallFailure)(SalOp *op, SalError error, SalReason reason, const char *details, int code);
285 typedef void (*SalOnCallReleased)(SalOp *salop);
286 typedef void (*SalOnAuthRequested)(SalOp *op, const char *realm, const char *username);
287 typedef void (*SalOnAuthSuccess)(SalOp *op, const char *realm, const char *username);
288 typedef void (*SalOnRegisterSuccess)(SalOp *op, bool_t registered);
289 typedef void (*SalOnRegisterFailure)(SalOp *op, SalError error, SalReason reason, const char *details);
290 typedef void (*SalOnVfuRequest)(SalOp *op);
291 typedef void (*SalOnDtmfReceived)(SalOp *op, char dtmf);
292 typedef void (*SalOnRefer)(Sal *sal, SalOp *op, const char *referto);
293 typedef void (*SalOnTextReceived)(Sal *sal, const SalMessage *msg);
294 typedef void (*SalOnTextDeliveryUpdate)(SalOp *op, SalTextDeliveryStatus status);
295 typedef void (*SalOnNotify)(SalOp *op, const char *from, const char *event);
296 typedef void (*SalOnNotifyRefer)(SalOp *op, SalReferStatus state);
297 typedef void (*SalOnNotifyPresence)(SalOp *op, SalSubscribeStatus ss, SalPresenceStatus status, const char *msg);
298 typedef void (*SalOnSubscribeReceived)(SalOp *salop, const char *from);
299 typedef void (*SalOnSubscribeClosed)(SalOp *salop, const char *from);
300 typedef void (*SalOnPingReply)(SalOp *salop);
302 typedef struct SalCallbacks{
303 SalOnCallReceived call_received;
304 SalOnCallRinging call_ringing;
305 SalOnCallAccepted call_accepted;
306 SalOnCallAck call_ack;
307 SalOnCallUpdating call_updating;
308 SalOnCallTerminated call_terminated;
309 SalOnCallFailure call_failure;
310 SalOnCallReleased call_released;
311 SalOnAuthRequested auth_requested;
312 SalOnAuthSuccess auth_success;
313 SalOnRegisterSuccess register_success;
314 SalOnRegisterFailure register_failure;
315 SalOnVfuRequest vfu_request;
316 SalOnDtmfReceived dtmf_received;
317 SalOnRefer refer_received;
318 SalOnTextReceived text_received;
319 SalOnTextDeliveryUpdate text_delivery_update;
321 SalOnNotifyPresence notify_presence;
322 SalOnNotifyRefer notify_refer;
323 SalOnSubscribeReceived subscribe_received;
324 SalOnSubscribeClosed subscribe_closed;
325 SalOnPingReply ping_reply;
328 typedef struct SalAuthInfo{
335 SalAuthInfo* sal_auth_info_new();
336 SalAuthInfo* sal_auth_info_clone(const SalAuthInfo* auth_info);
337 void sal_auth_info_delete(const SalAuthInfo* auth_info);
339 void sal_set_callbacks(Sal *ctx, const SalCallbacks *cbs);
340 int sal_listen_port(Sal *ctx, const char *addr, int port, SalTransport tr, int is_secure);
341 int sal_unlisten_ports(Sal *ctx);
342 void sal_set_dscp(Sal *ctx, int dscp);
343 int sal_reset_transports(Sal *ctx);
344 ortp_socket_t sal_get_socket(Sal *ctx);
345 void sal_set_user_agent(Sal *ctx, const char *user_agent);
346 /*keepalive period in ms*/
347 void sal_set_keepalive_period(Sal *ctx,unsigned int value);
348 void sal_use_tcp_tls_keepalive(Sal *ctx, bool_t enabled);
350 * returns keepalive period in ms
353 unsigned int sal_get_keepalive_period(Sal *ctx);
354 void sal_use_session_timers(Sal *ctx, int expires);
355 void sal_use_double_registrations(Sal *ctx, bool_t enabled);
356 void sal_expire_old_registration_contacts(Sal *ctx, bool_t enabled);
357 void sal_use_dates(Sal *ctx, bool_t enabled);
358 void sal_reuse_authorization(Sal *ctx, bool_t enabled);
359 void sal_use_one_matching_codec_policy(Sal *ctx, bool_t one_matching_codec);
360 void sal_use_rport(Sal *ctx, bool_t use_rports);
361 void sal_use_101(Sal *ctx, bool_t use_101);
362 void sal_set_root_ca(Sal* ctx, const char* rootCa);
363 const char *sal_get_root_ca(Sal* ctx);
364 void sal_verify_server_certificates(Sal *ctx, bool_t verify);
365 void sal_verify_server_cn(Sal *ctx, bool_t verify);
367 int sal_iterate(Sal *sal);
368 MSList * sal_get_pending_auths(Sal *sal);
370 /*create an operation */
371 SalOp * sal_op_new(Sal *sal);
373 /*generic SalOp API, working for all operations */
374 Sal *sal_op_get_sal(const SalOp *op);
375 void sal_op_set_contact(SalOp *op, const char *contact);
376 void sal_op_set_route(SalOp *op, const char *route);
377 void sal_op_set_from(SalOp *op, const char *from);
378 void sal_op_set_to(SalOp *op, const char *to);
379 void sal_op_release(SalOp *h);
380 void sal_op_authenticate(SalOp *h, const SalAuthInfo *info);
381 void sal_op_cancel_authentication(SalOp *h);
382 void sal_op_set_user_pointer(SalOp *h, void *up);
383 int sal_op_get_auth_requested(SalOp *h, const char **realm, const char **username);
384 const char *sal_op_get_from(const SalOp *op);
385 const char *sal_op_get_to(const SalOp *op);
386 const char *sal_op_get_contact(const SalOp *op);
387 const char *sal_op_get_route(const SalOp *op);
388 const char *sal_op_get_proxy(const SalOp *op);
389 const char *sal_op_get_remote_contact(const SalOp *op);
390 /*for incoming requests, returns the origin of the packet as a sip uri*/
391 const char *sal_op_get_network_origin(const SalOp *op);
392 /*returns far-end "User-Agent" string */
393 const char *sal_op_get_remote_ua(const SalOp *op);
394 void *sal_op_get_user_pointer(const SalOp *op);
395 const char* sal_op_get_call_id(const SalOp *op);
398 int sal_call_set_local_media_description(SalOp *h, SalMediaDescription *desc);
399 int sal_call(SalOp *h, const char *from, const char *to);
400 int sal_call_notify_ringing(SalOp *h, bool_t early_media);
401 /*accept an incoming call or, during a call accept a reINVITE*/
402 int sal_call_accept(SalOp*h);
403 int sal_call_decline(SalOp *h, SalReason reason, const char *redirection /*optional*/);
404 int sal_call_update(SalOp *h, const char *subject);
405 SalMediaDescription * sal_call_get_remote_media_description(SalOp *h);
406 SalMediaDescription * sal_call_get_final_media_description(SalOp *h);
407 int sal_call_refer(SalOp *h, const char *refer_to);
408 int sal_call_refer_with_replaces(SalOp *h, SalOp *other_call_h);
409 int sal_call_accept_refer(SalOp *h);
410 /*informs this call is consecutive to an incoming refer */
411 int sal_call_set_referer(SalOp *h, SalOp *refered_call);
412 /* returns the SalOp of a call that should be replaced by h, if any */
413 SalOp *sal_call_get_replaces(SalOp *h);
414 int sal_call_send_dtmf(SalOp *h, char dtmf);
415 int sal_call_terminate(SalOp *h);
416 bool_t sal_call_autoanswer_asked(SalOp *op);
417 void sal_call_send_vfu_request(SalOp *h);
418 int sal_call_is_offerer(const SalOp *h);
419 int sal_call_notify_refer_state(SalOp *h, SalOp *newcall);
422 int sal_register(SalOp *op, const char *proxy, const char *from, int expires);
423 int sal_register_refresh(SalOp *op, int expires);
424 int sal_unregister(SalOp *h);
427 int sal_text_send(SalOp *op, const char *from, const char *to, const char *text);
428 int sal_message_send(SalOp *op, const char *from, const char *to, const char* content_type, const char *msg);
430 /*presence Subscribe/notify*/
431 int sal_subscribe_presence(SalOp *op, const char *from, const char *to);
432 int sal_unsubscribe(SalOp *op);
433 int sal_subscribe_accept(SalOp *op);
434 int sal_subscribe_decline(SalOp *op);
435 int sal_notify_presence(SalOp *op, SalPresenceStatus status, const char *status_message);
436 int sal_notify_close(SalOp *op);
438 /*presence publish */
439 int sal_publish(SalOp *op, const char *from, const char *to, SalPresenceStatus status);
442 /*ping: main purpose is to obtain its own contact address behind firewalls*/
443 int sal_ping(SalOp *op, const char *from, const char *to);
447 #define payload_type_set_number(pt,n) (pt)->user_data=(void*)((long)n);
448 #define payload_type_get_number(pt) ((int)(long)(pt)->user_data)
451 void sal_get_default_local_ip(Sal *sal, int address_family, char *ip, size_t iplen);
455 void __sal_op_init(SalOp *b, Sal *sal);
456 void __sal_op_set_network_origin(SalOp *op, const char *origin /*a sip uri*/);
457 void __sal_op_set_remote_contact(SalOp *op, const char *ct);
458 void __sal_op_free(SalOp *b);