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 const char* sal_transport_to_string(SalTransport transport);
57 SalTransport sal_transport_parse(const char*);
58 /* Address manipulation API*/
59 SalAddress * sal_address_new(const char *uri);
60 SalAddress * sal_address_clone(const SalAddress *addr);
61 const char *sal_address_get_scheme(const SalAddress *addr);
62 const char *sal_address_get_display_name(const SalAddress* addr);
63 char *sal_address_get_display_name_unquoted(const SalAddress *addr);
64 const char *sal_address_get_username(const SalAddress *addr);
65 const char *sal_address_get_domain(const SalAddress *addr);
66 const char * sal_address_get_port(const SalAddress *addr);
67 int sal_address_get_port_int(const SalAddress *addr);
68 SalTransport sal_address_get_transport(const SalAddress* addr);
70 void sal_address_set_display_name(SalAddress *addr, const char *display_name);
71 void sal_address_set_username(SalAddress *addr, const char *username);
72 void sal_address_set_domain(SalAddress *addr, const char *host);
73 void sal_address_set_port(SalAddress *addr, const char *port);
74 void sal_address_set_port_int(SalAddress *uri, int port);
75 void sal_address_clean(SalAddress *addr);
76 char *sal_address_as_string(const SalAddress *u);
77 char *sal_address_as_string_uri_only(const SalAddress *u);
78 void sal_address_destroy(SalAddress *u);
79 void sal_address_set_param(SalAddress *u,const char* name,const char* value);
80 void sal_address_set_transport(SalAddress* addr,SalTransport transport);
84 void sal_uninit(Sal* sal);
85 void sal_set_user_pointer(Sal *sal, void *user_data);
86 void *sal_get_user_pointer(const Sal *sal);
108 typedef struct SalEndpointCandidate{
111 }SalEndpointCandidate;
113 #define SAL_ENDPOINT_CANDIDATE_MAX 2
115 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN 64
116 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_FOUNDATION_LEN 32
117 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_TYPE_LEN 6
119 typedef struct SalIceCandidate {
120 char addr[SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN];
121 char raddr[SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN];
122 char foundation[SAL_MEDIA_DESCRIPTION_MAX_ICE_FOUNDATION_LEN];
123 char type[SAL_MEDIA_DESCRIPTION_MAX_ICE_TYPE_LEN];
124 unsigned int componentID;
125 unsigned int priority;
130 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES 10
132 typedef struct SalIceRemoteCandidate {
133 char addr[SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN];
135 } SalIceRemoteCandidate;
137 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES 2
139 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN 256
140 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN 256
142 typedef struct SalSrtpCryptoAlgo {
144 enum ortp_srtp_crypto_suite_t algo;
145 /* 41= 40 max(key_length for all algo) + '\0' */
149 #define SAL_CRYPTO_ALGO_MAX 4
151 typedef struct SalStreamDescription{
159 MSList *payloads; //<list of PayloadType
162 SalEndpointCandidate candidates[SAL_ENDPOINT_CANDIDATE_MAX];
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{
183 unsigned int session_ver;
184 unsigned int session_id;
185 SalStreamDescription streams[SAL_MEDIA_DESCRIPTION_MAX_STREAMS];
186 char ice_ufrag[SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN];
187 char ice_pwd[SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN];
189 bool_t ice_completed;
190 } SalMediaDescription;
192 #define SAL_MEDIA_DESCRIPTION_MAX_MESSAGE_ATTRIBUTES 5
194 SalMediaDescription *sal_media_description_new();
195 void sal_media_description_ref(SalMediaDescription *md);
196 void sal_media_description_unref(SalMediaDescription *md);
197 bool_t sal_media_description_empty(const SalMediaDescription *md);
198 bool_t sal_media_description_equals(const SalMediaDescription *md1, const SalMediaDescription *md2);
199 bool_t sal_media_description_has_dir(const SalMediaDescription *md, SalStreamDir dir);
200 SalStreamDescription *sal_media_description_find_stream(SalMediaDescription *md,
201 SalMediaProto proto, SalStreamType type);
202 void sal_media_description_set_dir(SalMediaDescription *md, SalStreamDir stream_dir);
204 /*this structure must be at the first byte of the SalOp structure defined by implementors*/
205 typedef struct SalOpBase{
207 char *route; /*or request-uri for REGISTER*/
213 SalMediaDescription *local_media;
214 SalMediaDescription *remote_media;
219 typedef enum SalError{
222 SalErrorFailure, /* see SalReason for more details */
226 typedef enum SalReason{
230 SalReasonTemporarilyUnavailable,
232 SalReasonDoNotDisturb,
238 typedef enum SalPresenceStatus{
242 SalPresenceBerightback,
244 SalPresenceOnthephone,
245 SalPresenceOuttolunch,
246 SalPresenceDonotdisturb,
248 SalPresenceAltService,
251 typedef enum SalReferStatus{
257 typedef enum SalSubscribeStatus{
259 SalSubscribeTerminated
262 typedef void (*SalOnCallReceived)(SalOp *op);
263 typedef void (*SalOnCallRinging)(SalOp *op);
264 typedef void (*SalOnCallAccepted)(SalOp *op);
265 typedef void (*SalOnCallAck)(SalOp *op);
266 typedef void (*SalOnCallUpdating)(SalOp *op);/*< Called when a reINVITE is received*/
267 typedef void (*SalOnCallTerminated)(SalOp *op, const char *from);
268 typedef void (*SalOnCallFailure)(SalOp *op, SalError error, SalReason reason, const char *details, int code);
269 typedef void (*SalOnCallReleased)(SalOp *salop);
270 typedef void (*SalOnAuthRequested)(SalOp *op, const char *realm, const char *username);
271 typedef void (*SalOnAuthSuccess)(SalOp *op, const char *realm, const char *username);
272 typedef void (*SalOnRegisterSuccess)(SalOp *op, bool_t registered);
273 typedef void (*SalOnRegisterFailure)(SalOp *op, SalError error, SalReason reason, const char *details);
274 typedef void (*SalOnVfuRequest)(SalOp *op);
275 typedef void (*SalOnDtmfReceived)(SalOp *op, char dtmf);
276 typedef void (*SalOnRefer)(Sal *sal, SalOp *op, const char *referto);
277 typedef void (*SalOnTextReceived)(Sal *sal, const char *from, const char *msg);
278 typedef void (*SalOnNotify)(SalOp *op, const char *from, const char *event);
279 typedef void (*SalOnNotifyRefer)(SalOp *op, SalReferStatus state);
280 typedef void (*SalOnNotifyPresence)(SalOp *op, SalSubscribeStatus ss, SalPresenceStatus status, const char *msg);
281 typedef void (*SalOnSubscribeReceived)(SalOp *salop, const char *from);
282 typedef void (*SalOnSubscribeClosed)(SalOp *salop, const char *from);
283 typedef void (*SalOnPingReply)(SalOp *salop);
285 typedef struct SalCallbacks{
286 SalOnCallReceived call_received;
287 SalOnCallRinging call_ringing;
288 SalOnCallAccepted call_accepted;
289 SalOnCallAck call_ack;
290 SalOnCallUpdating call_updating;
291 SalOnCallTerminated call_terminated;
292 SalOnCallFailure call_failure;
293 SalOnCallReleased call_released;
294 SalOnAuthRequested auth_requested;
295 SalOnAuthSuccess auth_success;
296 SalOnRegisterSuccess register_success;
297 SalOnRegisterFailure register_failure;
298 SalOnVfuRequest vfu_request;
299 SalOnDtmfReceived dtmf_received;
300 SalOnRefer refer_received;
301 SalOnTextReceived text_received;
303 SalOnNotifyPresence notify_presence;
304 SalOnNotifyRefer notify_refer;
305 SalOnSubscribeReceived subscribe_received;
306 SalOnSubscribeClosed subscribe_closed;
307 SalOnPingReply ping_reply;
310 typedef struct SalAuthInfo{
317 SalAuthInfo* sal_auth_info_new();
318 SalAuthInfo* sal_auth_info_clone(const SalAuthInfo* auth_info);
319 void sal_auth_info_delete(const SalAuthInfo* auth_info);
321 void sal_set_callbacks(Sal *ctx, const SalCallbacks *cbs);
322 int sal_listen_port(Sal *ctx, const char *addr, int port, SalTransport tr, int is_secure);
323 int sal_unlisten_ports(Sal *ctx);
324 ortp_socket_t sal_get_socket(Sal *ctx);
325 void sal_set_user_agent(Sal *ctx, const char *user_agent);
326 /*keepalive period in ms*/
327 void sal_set_keepalive_period(Sal *ctx,unsigned int value);
329 * returns keepalive period in ms
332 unsigned int sal_get_keepalive_period(Sal *ctx);
333 void sal_use_session_timers(Sal *ctx, int expires);
334 void sal_use_double_registrations(Sal *ctx, bool_t enabled);
335 void sal_expire_old_registration_contacts(Sal *ctx, bool_t enabled);
336 void sal_reuse_authorization(Sal *ctx, bool_t enabled);
337 void sal_use_one_matching_codec_policy(Sal *ctx, bool_t one_matching_codec);
338 void sal_use_rport(Sal *ctx, bool_t use_rports);
339 void sal_use_101(Sal *ctx, bool_t use_101);
340 void sal_set_root_ca(Sal* ctx, const char* rootCa);
341 void sal_verify_server_certificates(Sal *ctx, bool_t verify);
343 int sal_iterate(Sal *sal);
344 MSList * sal_get_pending_auths(Sal *sal);
346 /*create an operation */
347 SalOp * sal_op_new(Sal *sal);
349 /*generic SalOp API, working for all operations */
350 Sal *sal_op_get_sal(const SalOp *op);
351 void sal_op_set_contact(SalOp *op, const char *contact);
352 void sal_op_set_route(SalOp *op, const char *route);
353 void sal_op_set_from(SalOp *op, const char *from);
354 void sal_op_set_to(SalOp *op, const char *to);
355 void sal_op_release(SalOp *h);
356 void sal_op_authenticate(SalOp *h, const SalAuthInfo *info);
357 void sal_op_cancel_authentication(SalOp *h);
358 void sal_op_set_user_pointer(SalOp *h, void *up);
359 int sal_op_get_auth_requested(SalOp *h, const char **realm, const char **username);
360 const char *sal_op_get_from(const SalOp *op);
361 const char *sal_op_get_to(const SalOp *op);
362 const char *sal_op_get_contact(const SalOp *op);
363 const char *sal_op_get_route(const SalOp *op);
364 const char *sal_op_get_proxy(const SalOp *op);
365 /*for incoming requests, returns the origin of the packet as a sip uri*/
366 const char *sal_op_get_network_origin(const SalOp *op);
367 /*returns far-end "User-Agent" string */
368 const char *sal_op_get_remote_ua(const SalOp *op);
369 void *sal_op_get_user_pointer(const SalOp *op);
372 int sal_call_set_local_media_description(SalOp *h, SalMediaDescription *desc);
373 int sal_call(SalOp *h, const char *from, const char *to);
374 int sal_call_notify_ringing(SalOp *h, bool_t early_media);
375 /*accept an incoming call or, during a call accept a reINVITE*/
376 int sal_call_accept(SalOp*h);
377 int sal_call_decline(SalOp *h, SalReason reason, const char *redirection /*optional*/);
378 int sal_call_update(SalOp *h, const char *subject);
379 SalMediaDescription * sal_call_get_remote_media_description(SalOp *h);
380 SalMediaDescription * sal_call_get_final_media_description(SalOp *h);
381 int sal_call_refer(SalOp *h, const char *refer_to);
382 int sal_call_refer_with_replaces(SalOp *h, SalOp *other_call_h);
383 int sal_call_accept_refer(SalOp *h);
384 /*informs this call is consecutive to an incoming refer */
385 int sal_call_set_referer(SalOp *h, SalOp *refered_call);
386 /* returns the SalOp of a call that should be replaced by h, if any */
387 SalOp *sal_call_get_replaces(SalOp *h);
388 int sal_call_send_dtmf(SalOp *h, char dtmf);
389 int sal_call_terminate(SalOp *h);
390 bool_t sal_call_autoanswer_asked(SalOp *op);
391 void sal_call_send_vfu_request(SalOp *h);
392 int sal_call_is_offerer(const SalOp *h);
393 int sal_call_notify_refer_state(SalOp *h, SalOp *newcall);
396 int sal_register(SalOp *op, const char *proxy, const char *from, int expires);
397 int sal_register_refresh(SalOp *op, int expires);
398 int sal_unregister(SalOp *h);
401 int sal_text_send(SalOp *op, const char *from, const char *to, const char *text);
403 /*presence Subscribe/notify*/
404 int sal_subscribe_presence(SalOp *op, const char *from, const char *to);
405 int sal_unsubscribe(SalOp *op);
406 int sal_subscribe_accept(SalOp *op);
407 int sal_subscribe_decline(SalOp *op);
408 int sal_notify_presence(SalOp *op, SalPresenceStatus status, const char *status_message);
409 int sal_notify_close(SalOp *op);
411 /*presence publish */
412 int sal_publish(SalOp *op, const char *from, const char *to, SalPresenceStatus status);
415 /*ping: main purpose is to obtain its own contact address behind firewalls*/
416 int sal_ping(SalOp *op, const char *from, const char *to);
420 #define payload_type_set_number(pt,n) (pt)->user_data=(void*)((long)n);
421 #define payload_type_get_number(pt) ((int)(long)(pt)->user_data)
424 void sal_get_default_local_ip(Sal *sal, int address_family, char *ip, size_t iplen);
428 void __sal_op_init(SalOp *b, Sal *sal);
429 void __sal_op_set_network_origin(SalOp *op, const char *origin /*a sip uri*/);
430 void __sal_op_free(SalOp *b);