provider.c 7.19 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
/*
	belle-sip - SIP (RFC3261) library.
    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 3 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, see <http://www.gnu.org/licenses/>.
*/

#include "belle_sip_internal.h"



static void belle_sip_provider_uninit(belle_sip_provider_t *p){
	belle_sip_list_free(p->listeners);
	belle_sip_list_free(p->lps);
}

28 29 30
static void channel_state_changed(belle_sip_channel_listener_t *obj, belle_sip_channel_t *chan, belle_sip_channel_state_t state){
}

Simon Morlat's avatar
Simon Morlat committed
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92
static void belle_sip_provider_dispatch_message(belle_sip_provider_t *prov, belle_sip_message_t *msg){
	/*should find existing transaction*/

	if (belle_sip_message_is_request(msg)){
		belle_sip_request_event_t event;
		event.source=prov;
		event.server_transaction=NULL;
		event.request=(belle_sip_request_t*)msg;
		event.dialog=NULL;
		BELLE_SIP_PROVIDER_INVOKE_LISTENERS(prov,process_request_event,&event);
	}else{
		belle_sip_response_event_t event;
		event.source=prov;
		event.client_transaction=NULL;
		event.dialog=NULL;
		event.response=(belle_sip_response_t*)msg;
		BELLE_SIP_PROVIDER_INVOKE_LISTENERS(prov,process_response_event,&event);
	}
}

static void fix_via(belle_sip_request_t *msg, const struct addrinfo* origin){
	char received[NI_MAXHOST];
	char rport[NI_MAXSERV];
	belle_sip_header_via_t *via;
	int err=getnameinfo(origin->ai_addr,origin->ai_addrlen,received,sizeof(received),
	                rport,sizeof(rport),NI_NUMERICHOST|NI_NUMERICSERV);
	if (err!=0){
		belle_sip_error("fix_via: getnameinfo() failed: %s",gai_strerror(errno));
		return;
	}
	via=BELLE_SIP_HEADER_VIA(belle_sip_message_get_header((belle_sip_message_t*)msg,"via"));
	if (via){
		belle_sip_header_via_set_received(via,received);
		belle_sip_header_via_set_rport(via,atoi(rport));
	}
}

static void belle_sip_provider_read_message(belle_sip_provider_t *prov, belle_sip_channel_t *chan){
	char buffer[belle_sip_network_buffer_size];
	int err;
	err=belle_sip_channel_recv(chan,buffer,sizeof(buffer));
	if (err>0){
		belle_sip_message_t *msg;
		buffer[err]='\0';
		belle_sip_message("provider %p read message from %s:%i\n%s",chan->peer_name,chan->peer_port,buffer);
		msg=belle_sip_message_parse(buffer);
		if (msg){
			if (belle_sip_message_is_request(msg)) fix_via(BELLE_SIP_REQUEST(msg),chan->peer);
			belle_sip_provider_dispatch_message(prov,msg);
		}else{
			belle_sip_error("Could not parse this message.");
		}
	}
}

static int channel_on_event(belle_sip_channel_listener_t *obj, belle_sip_channel_t *chan, unsigned int revents){
	if (revents & BELLE_SIP_EVENT_READ){
		belle_sip_provider_read_message(BELLE_SIP_PROVIDER(obj),chan);
	}
	return 0;
}

93
BELLE_SIP_IMPLEMENT_INTERFACE_BEGIN(belle_sip_provider_t,belle_sip_channel_listener_t)
Simon Morlat's avatar
Simon Morlat committed
94 95
	channel_state_changed,
	channel_on_event
96 97 98 99
BELLE_SIP_IMPLEMENT_INTERFACE_END

BELLE_SIP_DECLARE_IMPLEMENTED_INTERFACES_1(belle_sip_provider_t,belle_sip_channel_listener_t);
	
Simon Morlat's avatar
Simon Morlat committed
100
BELLE_SIP_INSTANCIATE_VPTR(belle_sip_provider_t,belle_sip_object_t,belle_sip_provider_uninit,NULL,NULL,FALSE);
Simon Morlat's avatar
Simon Morlat committed
101

102
belle_sip_provider_t *belle_sip_provider_new(belle_sip_stack_t *s, belle_sip_listening_point_t *lp){
Simon Morlat's avatar
Simon Morlat committed
103
	belle_sip_provider_t *p=belle_sip_object_new(belle_sip_provider_t);
104
	p->stack=s;
105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
	belle_sip_provider_add_listening_point(p,lp);
	return p;
}

int belle_sip_provider_add_listening_point(belle_sip_provider_t *p, belle_sip_listening_point_t *lp){
	p->lps=belle_sip_list_append(p->lps,lp);
	return 0;
}

belle_sip_listening_point_t *belle_sip_provider_get_listening_point(belle_sip_provider_t *p, const char *transport){
	belle_sip_list_t *l;
	for(l=p->lps;l!=NULL;l=l->next){
		belle_sip_listening_point_t *lp=(belle_sip_listening_point_t*)l->data;
		if (strcasecmp(belle_sip_listening_point_get_transport(lp),transport)==0)
			return lp;
	}
	return NULL;
}

const belle_sip_list_t *belle_sip_provider_get_listening_points(belle_sip_provider_t *p){
	return p->lps;
}

128 129
void belle_sip_provider_add_sip_listener(belle_sip_provider_t *p, belle_sip_listener_t *l){
	p->listeners=belle_sip_list_append(p->listeners,l);
130 131
}

132 133
void belle_sip_provider_remove_sip_listener(belle_sip_provider_t *p, belle_sip_listener_t *l){
	p->listeners=belle_sip_list_remove(p->listeners,l);
134 135
}

136 137 138 139 140 141 142 143
belle_sip_header_call_id_t * belle_sip_provider_create_call_id(belle_sip_provider_t *prov){
	belle_sip_header_call_id_t *cid=belle_sip_header_call_id_new();
	char tmp[32];
	snprintf(tmp,sizeof(tmp),"%u",belle_sip_random());
	belle_sip_header_call_id_set_call_id(cid,tmp);
	return cid;
}

144 145 146 147 148 149 150 151 152 153 154 155
belle_sip_client_transaction_t *belle_sip_provider_create_client_transaction(belle_sip_provider_t *p, belle_sip_request_t *req){
	return belle_sip_client_transaction_new(p,req);
}

belle_sip_server_transaction_t *belle_sip_provider_create_server_transaction(belle_sip_provider_t *p, belle_sip_request_t *req){
	return belle_sip_server_transaction_new(p,req);
}

belle_sip_stack_t *belle_sip_provider_get_sip_stack(belle_sip_provider_t *p){
	return p->stack;
}

156 157 158 159 160 161 162 163 164 165 166 167 168 169 170
belle_sip_channel_t * belle_sip_provider_get_channel(belle_sip_provider_t *p, const char *name, int port, const char *transport){
	belle_sip_list_t *l;
	belle_sip_listening_point_t *candidate=NULL,*lp;
	belle_sip_channel_t *chan;
	for(l=p->lps;l!=NULL;l=l->next){
		lp=(belle_sip_listening_point_t*)l->data;
		if (strcasecmp(belle_sip_listening_point_get_transport(lp),transport)==0){
			chan=belle_sip_listening_point_get_channel(lp,name,port);
			if (chan) return chan;
			candidate=lp;
		}
	}
	if (candidate){
		chan=belle_sip_listening_point_create_channel(candidate,name,port);
		if (chan==NULL) belle_sip_error("Could not create channel to %s:%s:%i",transport,name,port);
Simon Morlat's avatar
Simon Morlat committed
171
		else belle_sip_channel_add_listener(chan,BELLE_SIP_CHANNEL_LISTENER(p));
172 173 174
		return chan;
	}
	belle_sip_error("No listening point matching for transport %s",transport);
175
	return NULL;
Simon Morlat's avatar
wip  
Simon Morlat committed
176 177
}

Simon Morlat's avatar
Simon Morlat committed
178

179
void belle_sip_provider_send_request(belle_sip_provider_t *p, belle_sip_request_t *req){
180 181 182 183 184
	belle_sip_hop_t hop={0};
	belle_sip_channel_t *chan;
	belle_sip_stack_get_next_hop(p->stack,req,&hop);
	chan=belle_sip_provider_get_channel(p,hop.host, hop.port, hop.transport);
	if (chan) belle_sip_channel_queue_message(chan,BELLE_SIP_MESSAGE(req));
185 186
}

Simon Morlat's avatar
wip  
Simon Morlat committed
187
void belle_sip_provider_send_response(belle_sip_provider_t *p, belle_sip_response_t *resp){
188 189 190 191 192
	belle_sip_hop_t hop;
	belle_sip_channel_t *chan;
	belle_sip_response_get_return_hop(resp,&hop);
	chan=belle_sip_provider_get_channel(p,hop.host, hop.port, hop.transport);
	if (chan) belle_sip_channel_queue_message(chan,BELLE_SIP_MESSAGE(resp));
193 194 195 196 197 198 199 200 201 202
}

/*private provider API*/

void belle_sip_provider_set_transaction_terminated(belle_sip_provider_t *p, belle_sip_transaction_t *t){
	belle_sip_transaction_terminated_event_t ev;
	ev.source=p;
	ev.transaction=t;
	ev.is_server_transaction=t->is_server;
	BELLE_SIP_PROVIDER_INVOKE_LISTENERS(p,process_transaction_terminated,&ev);
Simon Morlat's avatar
wip  
Simon Morlat committed
203
}
204