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;
213 typedef enum SalError{
216 SalErrorFailure, /* see SalReason for more details */
220 typedef enum SalReason{
224 SalReasonTemporarilyUnavailable,
226 SalReasonDoNotDisturb,
232 typedef enum SalPresenceStatus{
236 SalPresenceBerightback,
238 SalPresenceOnthephone,
239 SalPresenceOuttolunch,
240 SalPresenceDonotdisturb,
242 SalPresenceAltService,
245 typedef enum SalReferStatus{
251 typedef enum SalSubscribeStatus{
253 SalSubscribeTerminated
256 typedef enum SalTextDeliveryStatus{
257 SalTextDeliveryInProgress,
259 SalTextDeliveryFailed
260 }SalTextDeliveryStatus;
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 (*SalOnMessageExternalBodyReceived)(Sal *sal, const char *from, const char *url);
279 typedef void (*SalOnTextDeliveryUpdate)(SalOp *op, SalTextDeliveryStatus status);
280 typedef void (*SalOnNotify)(SalOp *op, const char *from, const char *event);
281 typedef void (*SalOnNotifyRefer)(SalOp *op, SalReferStatus state);
282 typedef void (*SalOnNotifyPresence)(SalOp *op, SalSubscribeStatus ss, SalPresenceStatus status, const char *msg);
283 typedef void (*SalOnSubscribeReceived)(SalOp *salop, const char *from);
284 typedef void (*SalOnSubscribeClosed)(SalOp *salop, const char *from);
285 typedef void (*SalOnPingReply)(SalOp *salop);
287 typedef struct SalCallbacks{
288 SalOnCallReceived call_received;
289 SalOnCallRinging call_ringing;
290 SalOnCallAccepted call_accepted;
291 SalOnCallAck call_ack;
292 SalOnCallUpdating call_updating;
293 SalOnCallTerminated call_terminated;
294 SalOnCallFailure call_failure;
295 SalOnCallReleased call_released;
296 SalOnAuthRequested auth_requested;
297 SalOnAuthSuccess auth_success;
298 SalOnRegisterSuccess register_success;
299 SalOnRegisterFailure register_failure;
300 SalOnVfuRequest vfu_request;
301 SalOnDtmfReceived dtmf_received;
302 SalOnRefer refer_received;
303 SalOnTextReceived text_received;
304 SalOnMessageExternalBodyReceived message_external_body;
305 SalOnTextDeliveryUpdate text_delivery_update;
307 SalOnNotifyPresence notify_presence;
308 SalOnNotifyRefer notify_refer;
309 SalOnSubscribeReceived subscribe_received;
310 SalOnSubscribeClosed subscribe_closed;
311 SalOnPingReply ping_reply;
314 typedef struct SalAuthInfo{
321 SalAuthInfo* sal_auth_info_new();
322 SalAuthInfo* sal_auth_info_clone(const SalAuthInfo* auth_info);
323 void sal_auth_info_delete(const SalAuthInfo* auth_info);
325 void sal_set_callbacks(Sal *ctx, const SalCallbacks *cbs);
326 int sal_listen_port(Sal *ctx, const char *addr, int port, SalTransport tr, int is_secure);
327 int sal_unlisten_ports(Sal *ctx);
328 void sal_set_dscp(Sal *ctx, int dscp);
329 int sal_reset_transports(Sal *ctx);
330 ortp_socket_t sal_get_socket(Sal *ctx);
331 void sal_set_user_agent(Sal *ctx, const char *user_agent);
332 /*keepalive period in ms*/
333 void sal_set_keepalive_period(Sal *ctx,unsigned int value);
335 * returns keepalive period in ms
338 unsigned int sal_get_keepalive_period(Sal *ctx);
339 void sal_use_session_timers(Sal *ctx, int expires);
340 void sal_use_double_registrations(Sal *ctx, bool_t enabled);
341 void sal_expire_old_registration_contacts(Sal *ctx, bool_t enabled);
342 void sal_reuse_authorization(Sal *ctx, bool_t enabled);
343 void sal_use_one_matching_codec_policy(Sal *ctx, bool_t one_matching_codec);
344 void sal_use_rport(Sal *ctx, bool_t use_rports);
345 void sal_use_101(Sal *ctx, bool_t use_101);
346 void sal_set_root_ca(Sal* ctx, const char* rootCa);
347 void sal_verify_server_certificates(Sal *ctx, bool_t verify);
349 int sal_iterate(Sal *sal);
350 MSList * sal_get_pending_auths(Sal *sal);
352 /*create an operation */
353 SalOp * sal_op_new(Sal *sal);
355 /*generic SalOp API, working for all operations */
356 Sal *sal_op_get_sal(const SalOp *op);
357 void sal_op_set_contact(SalOp *op, const char *contact);
358 void sal_op_set_route(SalOp *op, const char *route);
359 void sal_op_set_from(SalOp *op, const char *from);
360 void sal_op_set_to(SalOp *op, const char *to);
361 void sal_op_release(SalOp *h);
362 void sal_op_authenticate(SalOp *h, const SalAuthInfo *info);
363 void sal_op_cancel_authentication(SalOp *h);
364 void sal_op_set_user_pointer(SalOp *h, void *up);
365 int sal_op_get_auth_requested(SalOp *h, const char **realm, const char **username);
366 const char *sal_op_get_from(const SalOp *op);
367 const char *sal_op_get_to(const SalOp *op);
368 const char *sal_op_get_contact(const SalOp *op);
369 const char *sal_op_get_route(const SalOp *op);
370 const char *sal_op_get_proxy(const SalOp *op);
371 /*for incoming requests, returns the origin of the packet as a sip uri*/
372 const char *sal_op_get_network_origin(const SalOp *op);
373 /*returns far-end "User-Agent" string */
374 const char *sal_op_get_remote_ua(const SalOp *op);
375 void *sal_op_get_user_pointer(const SalOp *op);
378 int sal_call_set_local_media_description(SalOp *h, SalMediaDescription *desc);
379 int sal_call(SalOp *h, const char *from, const char *to);
380 int sal_call_notify_ringing(SalOp *h, bool_t early_media);
381 /*accept an incoming call or, during a call accept a reINVITE*/
382 int sal_call_accept(SalOp*h);
383 int sal_call_decline(SalOp *h, SalReason reason, const char *redirection /*optional*/);
384 int sal_call_update(SalOp *h, const char *subject);
385 SalMediaDescription * sal_call_get_remote_media_description(SalOp *h);
386 SalMediaDescription * sal_call_get_final_media_description(SalOp *h);
387 int sal_call_refer(SalOp *h, const char *refer_to);
388 int sal_call_refer_with_replaces(SalOp *h, SalOp *other_call_h);
389 int sal_call_accept_refer(SalOp *h);
390 /*informs this call is consecutive to an incoming refer */
391 int sal_call_set_referer(SalOp *h, SalOp *refered_call);
392 /* returns the SalOp of a call that should be replaced by h, if any */
393 SalOp *sal_call_get_replaces(SalOp *h);
394 int sal_call_send_dtmf(SalOp *h, char dtmf);
395 int sal_call_terminate(SalOp *h);
396 bool_t sal_call_autoanswer_asked(SalOp *op);
397 void sal_call_send_vfu_request(SalOp *h);
398 int sal_call_is_offerer(const SalOp *h);
399 int sal_call_notify_refer_state(SalOp *h, SalOp *newcall);
402 int sal_register(SalOp *op, const char *proxy, const char *from, int expires);
403 int sal_register_refresh(SalOp *op, int expires);
404 int sal_unregister(SalOp *h);
407 int sal_text_send(SalOp *op, const char *from, const char *to, const char *text);
408 int sal_message_send(SalOp *op, const char *from, const char *to, const char* content_type, const char *msg);
410 /*presence Subscribe/notify*/
411 int sal_subscribe_presence(SalOp *op, const char *from, const char *to);
412 int sal_unsubscribe(SalOp *op);
413 int sal_subscribe_accept(SalOp *op);
414 int sal_subscribe_decline(SalOp *op);
415 int sal_notify_presence(SalOp *op, SalPresenceStatus status, const char *status_message);
416 int sal_notify_close(SalOp *op);
418 /*presence publish */
419 int sal_publish(SalOp *op, const char *from, const char *to, SalPresenceStatus status);
422 /*ping: main purpose is to obtain its own contact address behind firewalls*/
423 int sal_ping(SalOp *op, const char *from, const char *to);
427 #define payload_type_set_number(pt,n) (pt)->user_data=(void*)((long)n);
428 #define payload_type_get_number(pt) ((int)(long)(pt)->user_data)
431 void sal_get_default_local_ip(Sal *sal, int address_family, char *ip, size_t iplen);
435 void __sal_op_init(SalOp *b, Sal *sal);
436 void __sal_op_set_network_origin(SalOp *op, const char *origin /*a sip uri*/);
437 void __sal_op_free(SalOp *b);