我再公司实习做一个linphone产品的技改，这次任务是要实现一个能检测其他用户状态的功能，我再网上搜了很久才找到linphone里面有一个示例程序buddy status.c文件，但是不知道怎么使用。请各位好汉帮忙，代码如下，也不是很长：
/*
buddy_status
Copyright (C) 2010 Belledonne Communications SARL
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef IN_LINPHONE
#include "linphonecore.h"
#else
#include "linphone/linphonecore.h"
#endif
#include <signal.h>
static bool_t running=TRUE;
static void stop(int signum){
running=FALSE;
}
static void notify_presence_recv_updated (LinphoneCore *lc, LinphoneFriend *friend) {
const LinphonePresenceModel* model = linphone_friend_get_presence_model(friend);
const LinphoneAddress* friend_address = linphone_friend_get_address(friend);
LinphonePresenceActivity *activity = linphone_presence_model_get_activity(model);
char *activity_str = linphone_presence_activity_to_string(activity);
printf("New state state [%s] for user id [%s] \n"
,activity_str
,linphone_address_as_string (friend_address));
}
static void new_subscription_requested (LinphoneCore *lc, LinphoneFriend *friend, const char* url) {
const LinphoneAddress* friend_address = linphone_friend_get_address(friend);
printf(" [%s] wants to see your status, accepting\n"
,linphone_address_as_string (friend_address));
linphone_friend_edit(friend); /* start editing friend */
linphone_friend_set_inc_subscribe_policy(friend,LinphoneSPAccept); /* Accept incoming subscription request for this friend*/
linphone_friend_done(friend); /*commit change*/
linphone_core_add_friend(lc,friend); /* add this new friend to the buddy list*/
}
static void registration_state_changed(struct _LinphoneCore *lc, LinphoneProxyConfig *cfg, LinphoneRegistrationState cstate, const char *message){
printf("New registration state %s for user id [%s] at proxy [%s]"
,linphone_registration_state_to_string(cstate)
,linphone_proxy_config_get_identity(cfg)
,linphone_proxy_config_get_addr(cfg));
}
LinphoneCore *lc;
int main(int argc, char *argv[]){
LinphoneCoreVTable vtable={0};
char* dest_friend=NULL;
char* identity=NULL;
char* password=NULL;
LinphoneFriend* my_friend=NULL;
/* takes sip uri identity from the command line arguments */
if (argc>1){
dest_friend=argv[1];
}
/* takes sip uri identity from the command line arguments */
if (argc>2){
identity=argv[2];
}
/* takes password from the command line arguments */
if (argc>3){
password=argv[3];
}
signal(SIGINT,stop);
//#define DEBUG
#ifdef DEBUG
linphone_core_enable_logs(NULL); /*enable liblinphone logs.*/
#endif
/*
Fill the LinphoneCoreVTable with application callbacks.
All are optional. Here we only use the both notify_presence_received and new_subscription_requested callbacks
in order to get notifications about friend status.
*/
vtable.notify_presence_received=notify_presence_recv_updated;
vtable.new_subscription_requested=new_subscription_requested;
vtable.registration_state_changed=registration_state_changed; /*just in case sip proxy is used*/
/*
Instantiate a LinphoneCore object given the LinphoneCoreVTable
*/
lc=linphone_core_new(&vtable,NULL,NULL,NULL);
/*sip proxy might be requested*/
if (identity != NULL) {
/*create proxy config*/
LinphoneProxyConfig* proxy_cfg = linphone_proxy_config_new();
/*parse identity*/
LinphoneAddress *from = linphone_address_new(identity);
LinphoneAuthInfo *info;
if (from==NULL){
printf("%s not a valid sip uri, must be like sip:toto@sip.linphone.org \n",identity);
goto end;
}
if (password!=NULL){
info=linphone_auth_info_new(linphone_address_get_username(from),NULL,password,NULL,NULL,NULL); /*create authentication structure from identity*/
linphone_core_add_auth_info(lc,info); /*add authentication info to LinphoneCore*/
}
// configure proxy entries
linphone_proxy_config_set_identity(proxy_cfg,identity); /*set identity with user name and domain*/
linphone_proxy_config_set_server_addr(proxy_cfg,linphone_address_get_domain(from)); /* we assume domain = proxy server address*/
linphone_proxy_config_enable_register(proxy_cfg,TRUE); /*activate registration for this proxy config*/
linphone_proxy_config_enable_publish(proxy_cfg,TRUE); /* enable presence satus publication for this proxy*/
linphone_address_destroy(from); /*release resource*/
linphone_core_add_proxy_config(lc,proxy_cfg); /*add proxy config to linphone core*/
linphone_core_set_default_proxy(lc,proxy_cfg); /*set to default proxy*/
/* Loop until registration status is available */
do {
linphone_core_iterate(lc); /* first iterate initiates registration */
ms_usleep(100000);
}
while( running && linphone_proxy_config_get_state(proxy_cfg) == LinphoneRegistrationProgress);
}
if (dest_friend) {
my_friend = linphone_friend_new_with_address(dest_friend); /*creates friend object from dest*/
if (my_friend == NULL) {
printf("bad destination uri for friend [%s]\n",dest_friend);
goto end;
}
linphone_friend_enable_subscribes(my_friend,TRUE); /*configure this friend to emit SUBSCRIBE message after being added to LinphoneCore*/
linphone_friend_set_inc_subscribe_policy(my_friend,LinphoneSPAccept); /* Accept incoming subscription request for this friend*/
linphone_core_add_friend(lc,my_friend); /* add my friend to the buddy list, initiate SUBSCRIBE message*/
}
/*set my status to online*/
linphone_core_set_presence_model(lc, linphone_presence_model_new_with_activity(LinphonePresenceActivityOnline, NULL));
/* main loop for receiving notifications and doing background linphone core work: */
while(running){
linphone_core_iterate(lc); /* first iterate initiates subscription */
ms_usleep(50000);
}
/* change my presence status to offline*/
linphone_core_set_presence_model(lc, linphone_presence_model_new_with_activity(LinphonePresenceActivityOffline, NULL));
linphone_core_iterate(lc); /* just to make sure new status is initiate message is issued */
linphone_friend_edit(my_friend); /* start editing friend */
linphone_friend_enable_subscribes(my_friend,FALSE); /*disable subscription for this friend*/
linphone_friend_done(my_friend); /*commit changes triggering an UNSUBSCRIBE message*/
linphone_core_iterate(lc); /* just to make sure unsubscribe message is issued */
end:
printf("Shutting down...\n");
linphone_core_destroy(lc);
printf("Exited\n");
return 0;
}
