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 #define SAL_ENDPOINT_CANDIDATE_MAX 2
110 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN 64
111 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_FOUNDATION_LEN 32
112 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_TYPE_LEN 6
114 typedef struct SalIceCandidate {
115 char addr[SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN];
116 char raddr[SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN];
117 char foundation[SAL_MEDIA_DESCRIPTION_MAX_ICE_FOUNDATION_LEN];
118 char type[SAL_MEDIA_DESCRIPTION_MAX_ICE_TYPE_LEN];
119 unsigned int componentID;
120 unsigned int priority;
125 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES 10
127 typedef struct SalIceRemoteCandidate {
128 char addr[SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN];
130 } SalIceRemoteCandidate;
132 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES 2
134 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN 256
135 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN 256
137 typedef struct SalSrtpCryptoAlgo {
139 enum ortp_srtp_crypto_suite_t algo;
140 /* 41= 40 max(key_length for all algo) + '\0' */
144 #define SAL_CRYPTO_ALGO_MAX 4
146 typedef struct SalStreamDescription{
154 MSList *payloads; //<list of PayloadType
158 SalSrtpCryptoAlgo crypto[SAL_CRYPTO_ALGO_MAX];
159 unsigned int crypto_local_tag;
161 SalIceCandidate ice_candidates[SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES];
162 SalIceRemoteCandidate ice_remote_candidates[SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES];
163 char ice_ufrag[SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN];
164 char ice_pwd[SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN];
166 bool_t ice_completed;
167 } SalStreamDescription;
169 #define SAL_MEDIA_DESCRIPTION_MAX_STREAMS 4
171 typedef struct SalMediaDescription{
177 unsigned int session_ver;
178 unsigned int session_id;
179 SalStreamDescription streams[SAL_MEDIA_DESCRIPTION_MAX_STREAMS];
180 char ice_ufrag[SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN];
181 char ice_pwd[SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN];
183 bool_t ice_completed;
184 } SalMediaDescription;
186 #define SAL_MEDIA_DESCRIPTION_MAX_MESSAGE_ATTRIBUTES 5
188 SalMediaDescription *sal_media_description_new();
189 void sal_media_description_ref(SalMediaDescription *md);
190 void sal_media_description_unref(SalMediaDescription *md);
191 bool_t sal_media_description_empty(const SalMediaDescription *md);
192 bool_t sal_media_description_equals(const SalMediaDescription *md1, const SalMediaDescription *md2);
193 bool_t sal_media_description_has_dir(const SalMediaDescription *md, SalStreamDir dir);
194 SalStreamDescription *sal_media_description_find_stream(SalMediaDescription *md,
195 SalMediaProto proto, SalStreamType type);
196 void sal_media_description_set_dir(SalMediaDescription *md, SalStreamDir stream_dir);
198 /*this structure must be at the first byte of the SalOp structure defined by implementors*/
199 typedef struct SalOpBase{
201 char *route; /*or request-uri for REGISTER*/
207 SalMediaDescription *local_media;
208 SalMediaDescription *remote_media;
214 typedef enum SalError{
217 SalErrorFailure, /* see SalReason for more details */
221 typedef enum SalReason{
225 SalReasonTemporarilyUnavailable,
227 SalReasonDoNotDisturb,
233 typedef enum SalPresenceStatus{
237 SalPresenceBerightback,
239 SalPresenceOnthephone,
240 SalPresenceOuttolunch,
241 SalPresenceDonotdisturb,
243 SalPresenceAltService,
246 typedef enum SalReferStatus{
252 typedef enum SalSubscribeStatus{
254 SalSubscribeTerminated
257 typedef enum SalTextDeliveryStatus{
258 SalTextDeliveryInProgress,
260 SalTextDeliveryFailed
261 }SalTextDeliveryStatus;
263 typedef void (*SalOnCallReceived)(SalOp *op);
264 typedef void (*SalOnCallRinging)(SalOp *op);
265 typedef void (*SalOnCallAccepted)(SalOp *op);
266 typedef void (*SalOnCallAck)(SalOp *op);
267 typedef void (*SalOnCallUpdating)(SalOp *op);/*< Called when a reINVITE is received*/
268 typedef void (*SalOnCallTerminated)(SalOp *op, const char *from);
269 typedef void (*SalOnCallFailure)(SalOp *op, SalError error, SalReason reason, const char *details, int code);
270 typedef void (*SalOnCallReleased)(SalOp *salop);
271 typedef void (*SalOnAuthRequested)(SalOp *op, const char *realm, const char *username);
272 typedef void (*SalOnAuthSuccess)(SalOp *op, const char *realm, const char *username);
273 typedef void (*SalOnRegisterSuccess)(SalOp *op, bool_t registered);
274 typedef void (*SalOnRegisterFailure)(SalOp *op, SalError error, SalReason reason, const char *details);
275 typedef void (*SalOnVfuRequest)(SalOp *op);
276 typedef void (*SalOnDtmfReceived)(SalOp *op, char dtmf);
277 typedef void (*SalOnRefer)(Sal *sal, SalOp *op, const char *referto);
278 typedef void (*SalOnTextReceived)(Sal *sal, const char *from, const char *msg);
279 typedef void (*SalOnMessageExternalBodyReceived)(Sal *sal, const char *from, const char *url);
280 typedef void (*SalOnTextDeliveryUpdate)(SalOp *op, SalTextDeliveryStatus status);
281 typedef void (*SalOnNotify)(SalOp *op, const char *from, const char *event);
282 typedef void (*SalOnNotifyRefer)(SalOp *op, SalReferStatus state);
283 typedef void (*SalOnNotifyPresence)(SalOp *op, SalSubscribeStatus ss, SalPresenceStatus status, const char *msg);
284 typedef void (*SalOnSubscribeReceived)(SalOp *salop, const char *from);
285 typedef void (*SalOnSubscribeClosed)(SalOp *salop, const char *from);
286 typedef void (*SalOnPingReply)(SalOp *salop);
288 typedef struct SalCallbacks{
289 SalOnCallReceived call_received;
290 SalOnCallRinging call_ringing;
291 SalOnCallAccepted call_accepted;
292 SalOnCallAck call_ack;
293 SalOnCallUpdating call_updating;
294 SalOnCallTerminated call_terminated;
295 SalOnCallFailure call_failure;
296 SalOnCallReleased call_released;
297 SalOnAuthRequested auth_requested;
298 SalOnAuthSuccess auth_success;
299 SalOnRegisterSuccess register_success;
300 SalOnRegisterFailure register_failure;
301 SalOnVfuRequest vfu_request;
302 SalOnDtmfReceived dtmf_received;
303 SalOnRefer refer_received;
304 SalOnTextReceived text_received;
305 SalOnMessageExternalBodyReceived message_external_body;
306 SalOnTextDeliveryUpdate text_delivery_update;
308 SalOnNotifyPresence notify_presence;
309 SalOnNotifyRefer notify_refer;
310 SalOnSubscribeReceived subscribe_received;
311 SalOnSubscribeClosed subscribe_closed;
312 SalOnPingReply ping_reply;
315 typedef struct SalAuthInfo{
322 SalAuthInfo* sal_auth_info_new();
323 SalAuthInfo* sal_auth_info_clone(const SalAuthInfo* auth_info);
324 void sal_auth_info_delete(const SalAuthInfo* auth_info);
326 void sal_set_callbacks(Sal *ctx, const SalCallbacks *cbs);
327 int sal_listen_port(Sal *ctx, const char *addr, int port, SalTransport tr, int is_secure);
328 int sal_unlisten_ports(Sal *ctx);
329 void sal_set_dscp(Sal *ctx, int dscp);
330 int sal_reset_transports(Sal *ctx);
331 ortp_socket_t sal_get_socket(Sal *ctx);
332 void sal_set_user_agent(Sal *ctx, const char *user_agent);
333 /*keepalive period in ms*/
334 void sal_set_keepalive_period(Sal *ctx,unsigned int value);
336 * returns keepalive period in ms
339 unsigned int sal_get_keepalive_period(Sal *ctx);
340 void sal_use_session_timers(Sal *ctx, int expires);
341 void sal_use_double_registrations(Sal *ctx, bool_t enabled);
342 void sal_expire_old_registration_contacts(Sal *ctx, bool_t enabled);
343 void sal_reuse_authorization(Sal *ctx, bool_t enabled);
344 void sal_use_one_matching_codec_policy(Sal *ctx, bool_t one_matching_codec);
345 void sal_use_rport(Sal *ctx, bool_t use_rports);
346 void sal_use_101(Sal *ctx, bool_t use_101);
347 void sal_set_root_ca(Sal* ctx, const char* rootCa);
348 void sal_verify_server_certificates(Sal *ctx, bool_t verify);
350 int sal_iterate(Sal *sal);
351 MSList * sal_get_pending_auths(Sal *sal);
353 /*create an operation */
354 SalOp * sal_op_new(Sal *sal);
356 /*generic SalOp API, working for all operations */
357 Sal *sal_op_get_sal(const SalOp *op);
358 void sal_op_set_contact(SalOp *op, const char *contact);
359 void sal_op_set_route(SalOp *op, const char *route);
360 void sal_op_set_from(SalOp *op, const char *from);
361 void sal_op_set_to(SalOp *op, const char *to);
362 void sal_op_release(SalOp *h);
363 void sal_op_authenticate(SalOp *h, const SalAuthInfo *info);
364 void sal_op_cancel_authentication(SalOp *h);
365 void sal_op_set_user_pointer(SalOp *h, void *up);
366 int sal_op_get_auth_requested(SalOp *h, const char **realm, const char **username);
367 const char *sal_op_get_from(const SalOp *op);
368 const char *sal_op_get_to(const SalOp *op);
369 const char *sal_op_get_contact(const SalOp *op);
370 const char *sal_op_get_route(const SalOp *op);
371 const char *sal_op_get_proxy(const SalOp *op);
372 /*for incoming requests, returns the origin of the packet as a sip uri*/
373 const char *sal_op_get_network_origin(const SalOp *op);
374 /*returns far-end "User-Agent" string */
375 const char *sal_op_get_remote_ua(const SalOp *op);
376 void *sal_op_get_user_pointer(const SalOp *op);
377 const char* sal_op_get_call_id(const SalOp *op);
380 int sal_call_set_local_media_description(SalOp *h, SalMediaDescription *desc);
381 int sal_call(SalOp *h, const char *from, const char *to);
382 int sal_call_notify_ringing(SalOp *h, bool_t early_media);
383 /*accept an incoming call or, during a call accept a reINVITE*/
384 int sal_call_accept(SalOp*h);
385 int sal_call_decline(SalOp *h, SalReason reason, const char *redirection /*optional*/);
386 int sal_call_update(SalOp *h, const char *subject);
387 SalMediaDescription * sal_call_get_remote_media_description(SalOp *h);
388 SalMediaDescription * sal_call_get_final_media_description(SalOp *h);
389 int sal_call_refer(SalOp *h, const char *refer_to);
390 int sal_call_refer_with_replaces(SalOp *h, SalOp *other_call_h);
391 int sal_call_accept_refer(SalOp *h);
392 /*informs this call is consecutive to an incoming refer */
393 int sal_call_set_referer(SalOp *h, SalOp *refered_call);
394 /* returns the SalOp of a call that should be replaced by h, if any */
395 SalOp *sal_call_get_replaces(SalOp *h);
396 int sal_call_send_dtmf(SalOp *h, char dtmf);
397 int sal_call_terminate(SalOp *h);
398 bool_t sal_call_autoanswer_asked(SalOp *op);
399 void sal_call_send_vfu_request(SalOp *h);
400 int sal_call_is_offerer(const SalOp *h);
401 int sal_call_notify_refer_state(SalOp *h, SalOp *newcall);
404 int sal_register(SalOp *op, const char *proxy, const char *from, int expires);
405 int sal_register_refresh(SalOp *op, int expires);
406 int sal_unregister(SalOp *h);
409 int sal_text_send(SalOp *op, const char *from, const char *to, const char *text);
410 int sal_message_send(SalOp *op, const char *from, const char *to, const char* content_type, const char *msg);
412 /*presence Subscribe/notify*/
413 int sal_subscribe_presence(SalOp *op, const char *from, const char *to);
414 int sal_unsubscribe(SalOp *op);
415 int sal_subscribe_accept(SalOp *op);
416 int sal_subscribe_decline(SalOp *op);
417 int sal_notify_presence(SalOp *op, SalPresenceStatus status, const char *status_message);
418 int sal_notify_close(SalOp *op);
420 /*presence publish */
421 int sal_publish(SalOp *op, const char *from, const char *to, SalPresenceStatus status);
424 /*ping: main purpose is to obtain its own contact address behind firewalls*/
425 int sal_ping(SalOp *op, const char *from, const char *to);
429 #define payload_type_set_number(pt,n) (pt)->user_data=(void*)((long)n);
430 #define payload_type_get_number(pt) ((int)(long)(pt)->user_data)
433 void sal_get_default_local_ip(Sal *sal, int address_family, char *ip, size_t iplen);
437 void __sal_op_init(SalOp *b, Sal *sal);
438 void __sal_op_set_network_origin(SalOp *op, const char *origin /*a sip uri*/);
439 void __sal_op_free(SalOp *b);