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 bool_t sal_is_transport_enabled(Sal *sal, SalTransport transport);
57 const char* sal_transport_to_string(SalTransport transport);
58 SalTransport sal_transport_parse(const char*);
59 /* Address manipulation API*/
60 SalAddress * sal_address_new(const char *uri);
61 SalAddress * sal_address_clone(const SalAddress *addr);
62 const char *sal_address_get_scheme(const SalAddress *addr);
63 const char *sal_address_get_display_name(const SalAddress* addr);
64 char *sal_address_get_display_name_unquoted(const SalAddress *addr);
65 const char *sal_address_get_username(const SalAddress *addr);
66 const char *sal_address_get_domain(const SalAddress *addr);
67 const char * sal_address_get_port(const SalAddress *addr);
68 int sal_address_get_port_int(const SalAddress *addr);
69 SalTransport sal_address_get_transport(const SalAddress* addr);
71 void sal_address_set_display_name(SalAddress *addr, const char *display_name);
72 void sal_address_set_username(SalAddress *addr, const char *username);
73 void sal_address_set_domain(SalAddress *addr, const char *host);
74 void sal_address_set_port(SalAddress *addr, const char *port);
75 void sal_address_set_port_int(SalAddress *uri, int port);
76 void sal_address_clean(SalAddress *addr);
77 char *sal_address_as_string(const SalAddress *u);
78 char *sal_address_as_string_uri_only(const SalAddress *u);
79 void sal_address_destroy(SalAddress *u);
80 void sal_address_set_param(SalAddress *u,const char* name,const char* value);
81 void sal_address_set_transport(SalAddress* addr,SalTransport transport);
85 void sal_uninit(Sal* sal);
86 void sal_set_user_pointer(Sal *sal, void *user_data);
87 void *sal_get_user_pointer(const Sal *sal);
109 #define SAL_ENDPOINT_CANDIDATE_MAX 2
111 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN 64
112 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_FOUNDATION_LEN 32
113 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_TYPE_LEN 6
115 typedef struct SalIceCandidate {
116 char addr[SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN];
117 char raddr[SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN];
118 char foundation[SAL_MEDIA_DESCRIPTION_MAX_ICE_FOUNDATION_LEN];
119 char type[SAL_MEDIA_DESCRIPTION_MAX_ICE_TYPE_LEN];
120 unsigned int componentID;
121 unsigned int priority;
126 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES 10
128 typedef struct SalIceRemoteCandidate {
129 char addr[SAL_MEDIA_DESCRIPTION_MAX_ICE_ADDR_LEN];
131 } SalIceRemoteCandidate;
133 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES 2
135 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN 256
136 #define SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN 256
138 typedef struct SalSrtpCryptoAlgo {
140 enum ortp_srtp_crypto_suite_t algo;
141 /* 41= 40 max(key_length for all algo) + '\0' */
145 #define SAL_CRYPTO_ALGO_MAX 4
147 typedef struct SalStreamDescription{
155 MSList *payloads; //<list of PayloadType
159 SalSrtpCryptoAlgo crypto[SAL_CRYPTO_ALGO_MAX];
160 unsigned int crypto_local_tag;
162 SalIceCandidate ice_candidates[SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES];
163 SalIceRemoteCandidate ice_remote_candidates[SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES];
164 char ice_ufrag[SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN];
165 char ice_pwd[SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN];
167 bool_t ice_completed;
168 } SalStreamDescription;
170 #define SAL_MEDIA_DESCRIPTION_MAX_STREAMS 4
172 typedef struct SalMediaDescription{
178 unsigned int session_ver;
179 unsigned int session_id;
180 SalStreamDescription streams[SAL_MEDIA_DESCRIPTION_MAX_STREAMS];
181 char ice_ufrag[SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN];
182 char ice_pwd[SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN];
184 bool_t ice_completed;
185 } SalMediaDescription;
187 #define SAL_MEDIA_DESCRIPTION_MAX_MESSAGE_ATTRIBUTES 5
189 SalMediaDescription *sal_media_description_new();
190 void sal_media_description_ref(SalMediaDescription *md);
191 void sal_media_description_unref(SalMediaDescription *md);
192 bool_t sal_media_description_empty(const SalMediaDescription *md);
193 bool_t sal_media_description_equals(const SalMediaDescription *md1, const SalMediaDescription *md2);
194 bool_t sal_media_description_has_dir(const SalMediaDescription *md, SalStreamDir dir);
195 SalStreamDescription *sal_media_description_find_stream(SalMediaDescription *md,
196 SalMediaProto proto, SalStreamType type);
197 void sal_media_description_set_dir(SalMediaDescription *md, SalStreamDir stream_dir);
199 /*this structure must be at the first byte of the SalOp structure defined by implementors*/
200 typedef struct SalOpBase{
202 char *route; /*or request-uri for REGISTER*/
208 SalMediaDescription *local_media;
209 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);
379 int sal_call_set_local_media_description(SalOp *h, SalMediaDescription *desc);
380 int sal_call(SalOp *h, const char *from, const char *to);
381 int sal_call_notify_ringing(SalOp *h, bool_t early_media);
382 /*accept an incoming call or, during a call accept a reINVITE*/
383 int sal_call_accept(SalOp*h);
384 int sal_call_decline(SalOp *h, SalReason reason, const char *redirection /*optional*/);
385 int sal_call_update(SalOp *h, const char *subject);
386 SalMediaDescription * sal_call_get_remote_media_description(SalOp *h);
387 SalMediaDescription * sal_call_get_final_media_description(SalOp *h);
388 int sal_call_refer(SalOp *h, const char *refer_to);
389 int sal_call_refer_with_replaces(SalOp *h, SalOp *other_call_h);
390 int sal_call_accept_refer(SalOp *h);
391 /*informs this call is consecutive to an incoming refer */
392 int sal_call_set_referer(SalOp *h, SalOp *refered_call);
393 /* returns the SalOp of a call that should be replaced by h, if any */
394 SalOp *sal_call_get_replaces(SalOp *h);
395 int sal_call_send_dtmf(SalOp *h, char dtmf);
396 int sal_call_terminate(SalOp *h);
397 bool_t sal_call_autoanswer_asked(SalOp *op);
398 void sal_call_send_vfu_request(SalOp *h);
399 int sal_call_is_offerer(const SalOp *h);
400 int sal_call_notify_refer_state(SalOp *h, SalOp *newcall);
403 int sal_register(SalOp *op, const char *proxy, const char *from, int expires);
404 int sal_register_refresh(SalOp *op, int expires);
405 int sal_unregister(SalOp *h);
408 int sal_text_send(SalOp *op, const char *from, const char *to, const char *text);
409 int sal_message_send(SalOp *op, const char *from, const char *to, const char* content_type, const char *msg);
411 /*presence Subscribe/notify*/
412 int sal_subscribe_presence(SalOp *op, const char *from, const char *to);
413 int sal_unsubscribe(SalOp *op);
414 int sal_subscribe_accept(SalOp *op);
415 int sal_subscribe_decline(SalOp *op);
416 int sal_notify_presence(SalOp *op, SalPresenceStatus status, const char *status_message);
417 int sal_notify_close(SalOp *op);
419 /*presence publish */
420 int sal_publish(SalOp *op, const char *from, const char *to, SalPresenceStatus status);
423 /*ping: main purpose is to obtain its own contact address behind firewalls*/
424 int sal_ping(SalOp *op, const char *from, const char *to);
428 #define payload_type_set_number(pt,n) (pt)->user_data=(void*)((long)n);
429 #define payload_type_get_number(pt) ((int)(long)(pt)->user_data)
432 void sal_get_default_local_ip(Sal *sal, int address_family, char *ip, size_t iplen);
436 void __sal_op_init(SalOp *b, Sal *sal);
437 void __sal_op_set_network_origin(SalOp *op, const char *origin /*a sip uri*/);
438 void __sal_op_free(SalOp *b);