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_CHANGED (SAL_MEDIA_DESCRIPTION_NETWORK_CHANGED | SAL_MEDIA_DESCRIPTION_CODEC_CHANGED)
61 const char* sal_transport_to_string(SalTransport transport);
62 SalTransport sal_transport_parse(const char*);
63 /* Address manipulation API*/
64 SalAddress * sal_address_new(const char *uri);
65 SalAddress * sal_address_clone(const SalAddress *addr);
66 const char *sal_address_get_scheme(const SalAddress *addr);
67 const char *sal_address_get_display_name(const SalAddress* addr);
68 char *sal_address_get_display_name_unquoted(const SalAddress *addr);
69 const char *sal_address_get_username(const SalAddress *addr);
70 const char *sal_address_get_domain(const SalAddress *addr);
71 const char * sal_address_get_port(const SalAddress *addr);
72 int sal_address_get_port_int(const SalAddress *addr);
73 SalTransport sal_address_get_transport(const SalAddress* addr);
75 void sal_address_set_display_name(SalAddress *addr, const char *display_name);
76 void sal_address_set_username(SalAddress *addr, const char *username);
77 void sal_address_set_domain(SalAddress *addr, const char *host);
78 void sal_address_set_port(SalAddress *addr, const char *port);
79 void sal_address_set_port_int(SalAddress *uri, int port);
80 void sal_address_clean(SalAddress *addr);
81 char *sal_address_as_string(const SalAddress *u);
82 char *sal_address_as_string_uri_only(const SalAddress *u);
83 void sal_address_destroy(SalAddress *u);
84 void sal_address_set_param(SalAddress *u,const char* name,const char* value);
85 void sal_address_set_transport(SalAddress* addr,SalTransport transport);
89 void sal_uninit(Sal* sal);
90 void sal_set_user_pointer(Sal *sal, void *user_data);
91 void *sal_get_user_pointer(const Sal *sal);
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
163 SalSrtpCryptoAlgo crypto[SAL_CRYPTO_ALGO_MAX];
164 unsigned int crypto_local_tag;
166 SalIceCandidate ice_candidates[SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES];
167 SalIceRemoteCandidate ice_remote_candidates[SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES];
168 char ice_ufrag[SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN];
169 char ice_pwd[SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN];
171 bool_t ice_completed;
172 } SalStreamDescription;
174 #define SAL_MEDIA_DESCRIPTION_MAX_STREAMS 4
176 typedef struct SalMediaDescription{
182 unsigned int session_ver;
183 unsigned int session_id;
184 SalStreamDescription streams[SAL_MEDIA_DESCRIPTION_MAX_STREAMS];
185 char ice_ufrag[SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN];
186 char ice_pwd[SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN];
188 bool_t ice_completed;
189 } SalMediaDescription;
191 #define SAL_MEDIA_DESCRIPTION_MAX_MESSAGE_ATTRIBUTES 5
193 SalMediaDescription *sal_media_description_new();
194 void sal_media_description_ref(SalMediaDescription *md);
195 void sal_media_description_unref(SalMediaDescription *md);
196 bool_t sal_media_description_empty(const SalMediaDescription *md);
197 int sal_media_description_equals(const SalMediaDescription *md1, const SalMediaDescription *md2);
198 bool_t sal_media_description_has_dir(const SalMediaDescription *md, SalStreamDir dir);
199 SalStreamDescription *sal_media_description_find_stream(SalMediaDescription *md,
200 SalMediaProto proto, SalStreamType type);
201 void sal_media_description_set_dir(SalMediaDescription *md, SalStreamDir stream_dir);
203 /*this structure must be at the first byte of the SalOp structure defined by implementors*/
204 typedef struct SalOpBase{
206 char *route; /*or request-uri for REGISTER*/
212 SalMediaDescription *local_media;
213 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 enum SalTextDeliveryStatus{
263 SalTextDeliveryInProgress,
265 SalTextDeliveryFailed
266 }SalTextDeliveryStatus;
268 typedef void (*SalOnCallReceived)(SalOp *op);
269 typedef void (*SalOnCallRinging)(SalOp *op);
270 typedef void (*SalOnCallAccepted)(SalOp *op);
271 typedef void (*SalOnCallAck)(SalOp *op);
272 typedef void (*SalOnCallUpdating)(SalOp *op);/*< Called when a reINVITE is received*/
273 typedef void (*SalOnCallTerminated)(SalOp *op, const char *from);
274 typedef void (*SalOnCallFailure)(SalOp *op, SalError error, SalReason reason, const char *details, int code);
275 typedef void (*SalOnCallReleased)(SalOp *salop);
276 typedef void (*SalOnAuthRequested)(SalOp *op, const char *realm, const char *username);
277 typedef void (*SalOnAuthSuccess)(SalOp *op, const char *realm, const char *username);
278 typedef void (*SalOnRegisterSuccess)(SalOp *op, bool_t registered);
279 typedef void (*SalOnRegisterFailure)(SalOp *op, SalError error, SalReason reason, const char *details);
280 typedef void (*SalOnVfuRequest)(SalOp *op);
281 typedef void (*SalOnDtmfReceived)(SalOp *op, char dtmf);
282 typedef void (*SalOnRefer)(Sal *sal, SalOp *op, const char *referto);
283 typedef void (*SalOnTextReceived)(Sal *sal, const char *from, const char *msg);
284 typedef void (*SalOnMessageExternalBodyReceived)(Sal *sal, const char *from, const char *url);
285 typedef void (*SalOnTextDeliveryUpdate)(SalOp *op, SalTextDeliveryStatus status);
286 typedef void (*SalOnNotify)(SalOp *op, const char *from, const char *event);
287 typedef void (*SalOnNotifyRefer)(SalOp *op, SalReferStatus state);
288 typedef void (*SalOnNotifyPresence)(SalOp *op, SalSubscribeStatus ss, SalPresenceStatus status, const char *msg);
289 typedef void (*SalOnSubscribeReceived)(SalOp *salop, const char *from);
290 typedef void (*SalOnSubscribeClosed)(SalOp *salop, const char *from);
291 typedef void (*SalOnPingReply)(SalOp *salop);
293 typedef struct SalCallbacks{
294 SalOnCallReceived call_received;
295 SalOnCallRinging call_ringing;
296 SalOnCallAccepted call_accepted;
297 SalOnCallAck call_ack;
298 SalOnCallUpdating call_updating;
299 SalOnCallTerminated call_terminated;
300 SalOnCallFailure call_failure;
301 SalOnCallReleased call_released;
302 SalOnAuthRequested auth_requested;
303 SalOnAuthSuccess auth_success;
304 SalOnRegisterSuccess register_success;
305 SalOnRegisterFailure register_failure;
306 SalOnVfuRequest vfu_request;
307 SalOnDtmfReceived dtmf_received;
308 SalOnRefer refer_received;
309 SalOnTextReceived text_received;
310 SalOnMessageExternalBodyReceived message_external_body;
311 SalOnTextDeliveryUpdate text_delivery_update;
313 SalOnNotifyPresence notify_presence;
314 SalOnNotifyRefer notify_refer;
315 SalOnSubscribeReceived subscribe_received;
316 SalOnSubscribeClosed subscribe_closed;
317 SalOnPingReply ping_reply;
320 typedef struct SalAuthInfo{
327 SalAuthInfo* sal_auth_info_new();
328 SalAuthInfo* sal_auth_info_clone(const SalAuthInfo* auth_info);
329 void sal_auth_info_delete(const SalAuthInfo* auth_info);
331 void sal_set_callbacks(Sal *ctx, const SalCallbacks *cbs);
332 int sal_listen_port(Sal *ctx, const char *addr, int port, SalTransport tr, int is_secure);
333 int sal_unlisten_ports(Sal *ctx);
334 void sal_set_dscp(Sal *ctx, int dscp);
335 int sal_reset_transports(Sal *ctx);
336 ortp_socket_t sal_get_socket(Sal *ctx);
337 void sal_set_user_agent(Sal *ctx, const char *user_agent);
338 /*keepalive period in ms*/
339 void sal_set_keepalive_period(Sal *ctx,unsigned int value);
341 * returns keepalive period in ms
344 unsigned int sal_get_keepalive_period(Sal *ctx);
345 void sal_use_session_timers(Sal *ctx, int expires);
346 void sal_use_double_registrations(Sal *ctx, bool_t enabled);
347 void sal_expire_old_registration_contacts(Sal *ctx, bool_t enabled);
348 void sal_use_dates(Sal *ctx, bool_t enabled);
349 void sal_reuse_authorization(Sal *ctx, bool_t enabled);
350 void sal_use_one_matching_codec_policy(Sal *ctx, bool_t one_matching_codec);
351 void sal_use_rport(Sal *ctx, bool_t use_rports);
352 void sal_use_101(Sal *ctx, bool_t use_101);
353 void sal_set_root_ca(Sal* ctx, const char* rootCa);
354 void sal_verify_server_certificates(Sal *ctx, bool_t verify);
356 int sal_iterate(Sal *sal);
357 MSList * sal_get_pending_auths(Sal *sal);
359 /*create an operation */
360 SalOp * sal_op_new(Sal *sal);
362 /*generic SalOp API, working for all operations */
363 Sal *sal_op_get_sal(const SalOp *op);
364 void sal_op_set_contact(SalOp *op, const char *contact);
365 void sal_op_set_route(SalOp *op, const char *route);
366 void sal_op_set_from(SalOp *op, const char *from);
367 void sal_op_set_to(SalOp *op, const char *to);
368 void sal_op_release(SalOp *h);
369 void sal_op_authenticate(SalOp *h, const SalAuthInfo *info);
370 void sal_op_cancel_authentication(SalOp *h);
371 void sal_op_set_user_pointer(SalOp *h, void *up);
372 int sal_op_get_auth_requested(SalOp *h, const char **realm, const char **username);
373 const char *sal_op_get_from(const SalOp *op);
374 const char *sal_op_get_to(const SalOp *op);
375 const char *sal_op_get_contact(const SalOp *op);
376 const char *sal_op_get_route(const SalOp *op);
377 const char *sal_op_get_proxy(const SalOp *op);
378 /*for incoming requests, returns the origin of the packet as a sip uri*/
379 const char *sal_op_get_network_origin(const SalOp *op);
380 /*returns far-end "User-Agent" string */
381 const char *sal_op_get_remote_ua(const SalOp *op);
382 void *sal_op_get_user_pointer(const SalOp *op);
383 const char* sal_op_get_call_id(const SalOp *op);
386 int sal_call_set_local_media_description(SalOp *h, SalMediaDescription *desc);
387 int sal_call(SalOp *h, const char *from, const char *to);
388 int sal_call_notify_ringing(SalOp *h, bool_t early_media);
389 /*accept an incoming call or, during a call accept a reINVITE*/
390 int sal_call_accept(SalOp*h);
391 int sal_call_decline(SalOp *h, SalReason reason, const char *redirection /*optional*/);
392 int sal_call_update(SalOp *h, const char *subject);
393 SalMediaDescription * sal_call_get_remote_media_description(SalOp *h);
394 SalMediaDescription * sal_call_get_final_media_description(SalOp *h);
395 int sal_call_refer(SalOp *h, const char *refer_to);
396 int sal_call_refer_with_replaces(SalOp *h, SalOp *other_call_h);
397 int sal_call_accept_refer(SalOp *h);
398 /*informs this call is consecutive to an incoming refer */
399 int sal_call_set_referer(SalOp *h, SalOp *refered_call);
400 /* returns the SalOp of a call that should be replaced by h, if any */
401 SalOp *sal_call_get_replaces(SalOp *h);
402 int sal_call_send_dtmf(SalOp *h, char dtmf);
403 int sal_call_terminate(SalOp *h);
404 bool_t sal_call_autoanswer_asked(SalOp *op);
405 void sal_call_send_vfu_request(SalOp *h);
406 int sal_call_is_offerer(const SalOp *h);
407 int sal_call_notify_refer_state(SalOp *h, SalOp *newcall);
410 int sal_register(SalOp *op, const char *proxy, const char *from, int expires);
411 int sal_register_refresh(SalOp *op, int expires);
412 int sal_unregister(SalOp *h);
415 int sal_text_send(SalOp *op, const char *from, const char *to, const char *text);
416 int sal_message_send(SalOp *op, const char *from, const char *to, const char* content_type, const char *msg);
418 /*presence Subscribe/notify*/
419 int sal_subscribe_presence(SalOp *op, const char *from, const char *to);
420 int sal_unsubscribe(SalOp *op);
421 int sal_subscribe_accept(SalOp *op);
422 int sal_subscribe_decline(SalOp *op);
423 int sal_notify_presence(SalOp *op, SalPresenceStatus status, const char *status_message);
424 int sal_notify_close(SalOp *op);
426 /*presence publish */
427 int sal_publish(SalOp *op, const char *from, const char *to, SalPresenceStatus status);
430 /*ping: main purpose is to obtain its own contact address behind firewalls*/
431 int sal_ping(SalOp *op, const char *from, const char *to);
435 #define payload_type_set_number(pt,n) (pt)->user_data=(void*)((long)n);
436 #define payload_type_get_number(pt) ((int)(long)(pt)->user_data)
439 void sal_get_default_local_ip(Sal *sal, int address_family, char *ip, size_t iplen);
443 void __sal_op_init(SalOp *b, Sal *sal);
444 void __sal_op_set_network_origin(SalOp *op, const char *origin /*a sip uri*/);
445 void __sal_op_free(SalOp *b);