Exemplo n.º 1
0
static void log_missed(struct cell* t, struct sip_msg* reply, unsigned int code, time_t req_time)
{
        str* ouri;

	if (t->relayed_reply_branch >= 0) {
	    ouri = &t->uac[t->relayed_reply_branch].uri;
	} else {
	    ouri = GET_NEXT_HOP(t->uas.request);
	}
	
        log_request(t->uas.request, ouri, valid_to(t, reply), mc_table.s, code, req_time);
}
Exemplo n.º 2
0
int t_relay_to( struct sip_msg  *p_msg , struct proxy_l *proxy, int flags)
{
	int ret;
	int new_tran;
	int reply_ret;
	struct cell *t;

	ret=0;

	new_tran = t_newtran( p_msg, 1/*full UAS cloning*/ );

	/* parsing error, memory alloc, whatever ... */
	if (new_tran<0) {
		ret =  new_tran;
		goto done;
	}
	/* if that was a retransmission, break from script */
	if (new_tran==0) {
		goto done;
	}

	/* new transaction */

	/* ACKs do not establish a transaction and are fwd-ed statelessly */
	if ( p_msg->REQ_METHOD==METHOD_ACK) {
		LM_DBG("forwarding ACK\n");
		/* send it out */
		if (proxy==0) {
			proxy=uri2proxy(GET_NEXT_HOP(p_msg),
				p_msg->force_send_socket ?
				p_msg->force_send_socket->proto : PROTO_NONE );
			if (proxy==0) {
					ret=E_BAD_ADDRESS;
					goto done;
			}
			ret=forward_request( p_msg , proxy);
			if (ret>=0) ret=1;
			free_proxy( proxy );
			pkg_free( proxy );
		} else {
			ret=forward_request( p_msg , proxy);
			if (ret>=0) ret=1;
		}
		goto done;
	}

	/* if replication flag is set, mark the transaction as local
	   so that replies will not be relaied */
	t=get_t();
	if (flags&TM_T_RELAY_repl_FLAG) t->flags|=T_IS_LOCAL_FLAG;
	if (flags&TM_T_RELAY_nodnsfo_FLAG) t->flags|=T_NO_DNS_FAILOVER_FLAG;
	if (flags&TM_T_RELAY_reason_FLAG) t->flags|=T_CANCEL_REASON_FLAG;
	if ((flags&TM_T_RELAY_do_cancel_dis_FLAG) &&
	tm_has_request_disponsition_no_cancel(p_msg)==0 )
		t->flags|=T_MULTI_200OK_FLAG;

	/* now go ahead and forward ... */
	ret=t_forward_nonack( t, p_msg, proxy, 0/*no reset*/, 0/*unlocked*/);
	if (ret<=0) {
		LM_DBG("t_forward_nonack returned error \n");
		/* we don't want to pass upstream any reply regarding replicating
		 * a request; replicated branch must stop at us*/
		if (!(flags&(TM_T_RELAY_repl_FLAG|TM_T_RELAY_noerr_FLAG))) {
			reply_ret = kill_transaction( t );
			if (reply_ret>0) {
				/* we have taken care of all -- do nothing in
				script */
				LM_DBG("generation of a stateful reply on error succeeded\n");
				ret=0;
			}  else {
				LM_DBG("generation of a stateful reply on error failed\n");
			}
		}
	} else {
		LM_DBG("new transaction fwd'ed\n");
	}

done:
	return ret;
}
Exemplo n.º 3
0
/* WARNING: doesn't work from failure route (deadlock, uses t_reply => tries
 *  to get the reply lock again */
int t_relay_to( struct sip_msg  *p_msg , struct proxy_l *proxy, int proto,
				int replicate)
{
	int ret;
	int new_tran;
	/* struct hdr_field *hdr; */
	struct cell *t;
	struct dest_info dst;
	unsigned short port;
	str host;
	short comp;
#ifndef TM_DELAYED_REPLY
	int reply_ret;
#endif

	ret=0;
	
	/* special case for CANCEL */
	if ( p_msg->REQ_METHOD==METHOD_CANCEL){
		ret=t_forward_cancel(p_msg, proxy, proto, &t);
		if (t) goto handle_ret;
		goto done;
	}
	new_tran = t_newtran( p_msg );
	
	/* parsing error, memory alloc, whatever ... if via is bad
	   and we are forced to reply there, return with 0 (->break),
	   pass error status otherwise
	   MMA: return value E_SCRIPT means that transaction was already started
	   from the script so continue with that transaction
	*/
	if (likely(new_tran!=E_SCRIPT)) {
		if (new_tran<0) {
			ret = (ser_error==E_BAD_VIA && reply_to_via) ? 0 : new_tran;
			goto done;
		}
		/* if that was a retransmission, return we are happily done */
		if (new_tran==0) {
			ret = 1;
			goto done;
		}
	}else if (unlikely(p_msg->REQ_METHOD==METHOD_ACK)) {
			/* transaction previously found (E_SCRIPT) and msg==ACK
			    => ack to neg. reply  or ack to local trans.
			    => process it and exit */
			/* FIXME: there's no way to distinguish here between acks to
			   local trans. and neg. acks */
			/* in normal operation we should never reach this point, if we
			   do WARN(), it might hide some real bug (apart from possibly
			   hiding a bug the most harm done is calling the TMCB_ACK_NEG
			   callbacks twice) */
			WARN("negative or local ACK caught, please report\n");
			t=get_t();
			if (unlikely(has_tran_tmcbs(t, TMCB_ACK_NEG_IN)))
				run_trans_callbacks(TMCB_ACK_NEG_IN, t, p_msg, 0, 
										p_msg->REQ_METHOD);
			t_release_transaction(t);
			ret=1;
			goto done;
	}

	/* new transaction */

	/* at this point if the msg is an ACK it is an e2e ACK and
	   e2e ACKs do not establish a transaction and are fwd-ed statelessly */
	if ( p_msg->REQ_METHOD==METHOD_ACK) {
		DBG( "SER: forwarding ACK  statelessly \n");
		if (proxy==0) {
			init_dest_info(&dst);
			dst.proto=proto;
			if (get_uri_send_info(GET_NEXT_HOP(p_msg), &host, &port,
									&dst.proto, &comp)!=0){
				ret=E_BAD_ADDRESS;
				goto done;
			}
#ifdef USE_COMP
			dst.comp=comp;
#endif
			/* dst->send_sock not set, but forward_request will take care
			 * of it */
			ret=forward_request(p_msg, &host, port, &dst);
		} else {
			init_dest_info(&dst);
			dst.proto=get_proto(proto, proxy->proto);
			proxy2su(&dst.to, proxy);
			/* dst->send_sock not set, but forward_request will take care
			 * of it */
			ret=forward_request( p_msg , 0, 0, &dst) ;
		}
		goto done;
	}

	/* if replication flag is set, mark the transaction as local
	   so that replies will not be relayed */
	t=get_t();
	if (replicate) t->flags|=T_IS_LOCAL_FLAG;

	/* INVITE processing might take long, particularly because of DNS
	   look-ups -- let upstream know we're working on it */
	if (p_msg->REQ_METHOD==METHOD_INVITE && (t->flags&T_AUTO_INV_100)
		&& (t->uas.status < 100)
	) {
		DBG( "SER: new INVITE\n");
		if (!t_reply( t, p_msg , 100 ,
			cfg_get(tm, tm_cfg, tm_auto_inv_100_r)))
				DBG("SER: ERROR: t_reply (100)\n");
	} 

	/* now go ahead and forward ... */
	ret=t_forward_nonack(t, p_msg, proxy, proto);
handle_ret:
	if (ret<=0) {
		DBG( "t_forward_nonack returned error %d (%d)\n", ret, ser_error);
		/* we don't want to pass upstream any reply regarding replicating
		 * a request; replicated branch must stop at us*/
		if (likely(!replicate)) {
			if(t->flags&T_DISABLE_INTERNAL_REPLY) {
				/* flag set to don't generate the internal negative reply
				 * - let the transaction live further, processing should
				 *   continue in config */
				DBG("not generating immediate reply for error %d\n", ser_error);
				tm_error=ser_error;
				ret = -4;
				goto done;
			}
#ifdef TM_DELAYED_REPLY
			/* current error in tm_error */
			tm_error=ser_error;
			set_kr(REQ_ERR_DELAYED);
			DBG("%d error reply generation delayed \n", ser_error);
#else

			reply_ret=kill_transaction( t, ser_error );
			if (reply_ret>0) {
				/* we have taken care of all -- do nothing in
			  	script */
				DBG("ERROR: generation of a stateful reply "
					"on error succeeded\n");
				/*ret=0; -- we don't want to stop the script */
			}  else {
				DBG("ERROR: generation of a stateful reply "
					"on error failed\n");
				t_release_transaction(t);
			}
#endif /* TM_DELAYED_REPLY */
		}else{
			t_release_transaction(t); /* kill it  silently */
		}
	} else {
		DBG( "SER: new transaction fwd'ed\n");
	}

done:
	return ret;
}
Exemplo n.º 4
0
Arquivo: t_fwd.c Projeto: OPSF/uClinux
/* function returns:
 *       1 - forward successful
 *      -1 - error during forward
 */
int t_forward_nonack( struct cell *t, struct sip_msg* p_msg ,
                      struct proxy_l * proxy, int proto)
{
    str          backup_uri;
    int branch_ret, lowest_ret;
    str current_uri;
    branch_bm_t	added_branches;
    int first_branch;
    int i, q;
    struct cell *t_invite;
    int success_branch;
    int try_new;
    str dst_uri;

    /* make -Wall happy */
    current_uri.s=0;

    set_kr(REQ_FWDED);

    if (p_msg->REQ_METHOD==METHOD_CANCEL) {
        t_invite=t_lookupOriginalT(  p_msg );
        if (t_invite!=T_NULL_CELL) {
            e2e_cancel( p_msg, t, t_invite );
            UNREF(t_invite);
            return 1;
        }
    }

    /* backup current uri ... add_uac changes it */
    backup_uri = p_msg->new_uri;
    /* if no more specific error code is known, use this */
    lowest_ret=E_BUG;
    /* branches added */
    added_branches=0;
    /* branch to begin with */
    first_branch=t->nr_of_outgoings;

    /* on first-time forwarding, use current uri, later only what
       is in additional branches (which may be continuously refilled
    */
    if (first_branch==0) {
        try_new=1;
        branch_ret=add_uac( t, p_msg, GET_RURI(p_msg), GET_NEXT_HOP(p_msg), proxy, proto );
        if (branch_ret>=0)
            added_branches |= 1<<branch_ret;
        else
            lowest_ret=branch_ret;
    } else try_new=0;

    init_branch_iterator();
    while((current_uri.s=next_branch( &current_uri.len, &q, &dst_uri.s, &dst_uri.len))) {
        try_new++;
        branch_ret=add_uac( t, p_msg, &current_uri,
                            (dst_uri.len) ? (&dst_uri) : &current_uri,
                            proxy, proto);
        /* pick some of the errors in case things go wrong;
           note that picking lowest error is just as good as
           any other algorithm which picks any other negative
           branch result */
        if (branch_ret>=0)
            added_branches |= 1<<branch_ret;
        else
            lowest_ret=branch_ret;
    }
    /* consume processed branches */
    clear_branches();

    /* restore original URI */
    p_msg->new_uri=backup_uri;

    /* don't forget to clear all branches processed so far */

    /* things went wrong ... no new branch has been fwd-ed at all */
    if (added_branches==0) {
        if (try_new==0) {
            LOG(L_ERR, "ERROR: t_forward_nonack: no branched for forwarding\n");
            return -1;
        }
        LOG(L_ERR, "ERROR: t_forward_nonack: failure to add branches\n");
        return lowest_ret;
    }

    /* send them out now */
    success_branch=0;
    for (i=first_branch; i<t->nr_of_outgoings; i++) {
        if (added_branches & (1<<i)) {
            if (SEND_BUFFER( &t->uac[i].request)==-1) {
                LOG(L_ERR, "ERROR: t_forward_nonack: sending request failed\n");
                if (proxy) {
                    proxy->errors++;
                    proxy->ok=0;
                }
            } else {
                success_branch++;
            }
            start_retr( &t->uac[i].request );
        }
    }
    if (success_branch<=0) {
        ser_error=E_SEND;
        return -1;
    }
    return 1;
}
Exemplo n.º 5
0
int t_relay_to( struct sip_msg  *p_msg , struct proxy_l *proxy, int flags)
{
	int ret;
	int new_tran;
	int reply_ret;
	struct cell *t;
	context_p ctx_backup;

	ret=0;

	new_tran = t_newtran( p_msg, 1/*full UAS cloning*/ );

	/* parsing error, memory alloc, whatever ... */
	if (new_tran<0) {
		ret =  new_tran;
		goto done;
	}
	/* if that was a retransmission, break from script */
	if (new_tran==0) {
		goto done;
	}

	/* new transaction */

	/* ACKs do not establish a transaction and are fwd-ed statelessly */
	if ( p_msg->REQ_METHOD==METHOD_ACK) {
		LM_DBG("forwarding ACK\n");
		/* send it out */
		if (proxy==0) {
			proxy=uri2proxy(GET_NEXT_HOP(p_msg),
				p_msg->force_send_socket ?
				p_msg->force_send_socket->proto : PROTO_NONE );
			if (proxy==0) {
					ret=E_BAD_ADDRESS;
					goto done;
			}
			ret=forward_request( p_msg , proxy);
			if (ret>=0) ret=1;
			free_proxy( proxy );
			pkg_free( proxy );
		} else {
			ret=forward_request( p_msg , proxy);
			if (ret>=0) ret=1;
		}
		goto done;
	}

	/* if replication flag is set, mark the transaction as local
	   so that replies will not be relaied */
	t=get_t();
	if (flags&TM_T_REPLY_repl_FLAG) t->flags|=T_IS_LOCAL_FLAG;
	if (flags&TM_T_REPLY_nodnsfo_FLAG) t->flags|=T_NO_DNS_FAILOVER_FLAG;
	if (flags&TM_T_REPLY_reason_FLAG) t->flags|=T_CANCEL_REASON_FLAG;

	/* INVITE processing might take long, particularly because of DNS
	   look-ups -- let upstream know we're working on it */
	if ( p_msg->REQ_METHOD==METHOD_INVITE &&
	!(flags&(TM_T_REPLY_no100_FLAG|TM_T_REPLY_repl_FLAG)) ) {
		ctx_backup = current_processing_ctx;
		current_processing_ctx = NULL;
		t_reply( t, p_msg , 100 , &relay_reason_100);
		current_processing_ctx = ctx_backup;
	}

	/* now go ahead and forward ... */
	ret=t_forward_nonack( t, p_msg, proxy);
	if (ret<=0) {
		LM_DBG("t_forward_nonack returned error \n");
		/* we don't want to pass upstream any reply regarding replicating
		 * a request; replicated branch must stop at us*/
		if (!(flags&(TM_T_REPLY_repl_FLAG|TM_T_REPLY_noerr_FLAG))) {
			reply_ret = kill_transaction( t );
			if (reply_ret>0) {
				/* we have taken care of all -- do nothing in
				script */
				LM_DBG("generation of a stateful reply on error succeeded\n");
				ret=0;
			}  else {
				LM_DBG("generation of a stateful reply on error failed\n");
			}
		}
	} else {
		LM_DBG("new transaction fwd'ed\n");
	}

done:
	return ret;
}
Exemplo n.º 6
0
/* WARNING: doesn't work from failure route (deadlock, uses t_reply => tries
 *  to get the reply lock again */
int t_relay_to( struct sip_msg  *p_msg , struct proxy_l *proxy, int proto,
				int replicate)
{
	int ret;
	int new_tran;
	int reply_ret;
	/* struct hdr_field *hdr; */
	struct cell *t;
	struct dest_info dst;
	unsigned short port;
	str host;
	short comp;

	ret=0;
	
	new_tran = t_newtran( p_msg );
	
	/* parsing error, memory alloc, whatever ... if via is bad
	   and we are forced to reply there, return with 0 (->break),
	   pass error status otherwise

       MMA: return value E_SCRIPT means that transaction was already started from the script
	   so continue with that transaction
	*/
	if (new_tran!=E_SCRIPT) {
		if (new_tran<0) {
			ret = (ser_error==E_BAD_VIA && reply_to_via) ? 0 : new_tran;
			goto done;
		}
		/* if that was a retransmission, return we are happily done */
		if (new_tran==0) {
			ret = 1;
			goto done;
		}
	}

	/* new transaction */

	/* ACKs do not establish a transaction and are fwd-ed statelessly */
	if ( p_msg->REQ_METHOD==METHOD_ACK) {
		DBG( "SER: forwarding ACK  statelessly \n");
		if (proxy==0) {
			init_dest_info(&dst);
			dst.proto=proto;
			if (get_uri_send_info(GET_NEXT_HOP(p_msg), &host, &port,
									&dst.proto, &comp)!=0){
				ret=E_BAD_ADDRESS;
				goto done;
			}
#ifdef USE_COMP
			dst.comp=comp;
#endif
			/* dst->send_sock not set, but forward_request will take care
			 * of it */
			ret=forward_request(p_msg, &host, port, &dst);
		} else {
			init_dest_info(&dst);
			dst.proto=get_proto(proto, proxy->proto);
			proxy2su(&dst.to, proxy);
			/* dst->send_sock not set, but forward_request will take care
			 * of it */
			ret=forward_request( p_msg , 0, 0, &dst) ;
		}
		goto done;
	}

	/* if replication flag is set, mark the transaction as local
	   so that replies will not be relayed */
	t=get_t();
	if (replicate) t->flags|=T_IS_LOCAL_FLAG;

	/* INVITE processing might take long, particularly because of DNS
	   look-ups -- let upstream know we're working on it */
	if (p_msg->REQ_METHOD==METHOD_INVITE )
	{
		DBG( "SER: new INVITE\n");
		if (!t_reply( t, p_msg , 100 ,
			"trying -- your call is important to us"))
				DBG("SER: ERROR: t_reply (100)\n");
	} 

	/* now go ahead and forward ... */
	ret=t_forward_nonack(t, p_msg, proxy, proto);
	if (ret<=0) {
		DBG( "ERROR:tm:t_relay_to:  t_forward_nonack returned error \n");
		/* we don't want to pass upstream any reply regarding replicating
		 * a request; replicated branch must stop at us*/
		if (!replicate) {
			reply_ret=kill_transaction( t );
			if (reply_ret>0) {
				/* we have taken care of all -- do nothing in
			  	script */
				DBG("ERROR: generation of a stateful reply "
					"on error succeeded\n");
				/*ret=0; -- we don't want to stop the script */
			}  else {
				DBG("ERROR: generation of a stateful reply "
					"on error failed\n");
				t_release_transaction(t);
			}
		}else{
			t_release_transaction(t); /* kill it  silently */
		}
	} else {
		DBG( "SER: new transaction fwd'ed\n");
	}

done:
	return ret;
}
Exemplo n.º 7
0
static int xl_get_nexthop(struct sip_msg *msg, str *res, str *hp, int hi, int hf)
{
	*res=*GET_NEXT_HOP(msg);
	return 0;
}
Exemplo n.º 8
0
int t_relay_to( struct sip_msg  *p_msg , struct proxy_l *proxy, int proto,
				int replicate)
{
	int ret;
	int new_tran;
	str *uri;
	int reply_ret;
	/* struct hdr_field *hdr; */
	struct cell *t;

	ret=0;

	new_tran = t_newtran( p_msg );

	/* parsing error, memory alloc, whatever ... if via is bad
	   and we are forced to reply there, return with 0 (->break),
	   pass error status otherwise
	*/
	if (new_tran<0) {
		ret = (ser_error==E_BAD_VIA && reply_to_via) ? 0 : new_tran;
		goto done;
	}
	/* if that was a retransmission, return we are happily done */
	if (new_tran==0) {
		ret = 1;
		goto done;
	}

	/* new transaction */

	/* ACKs do not establish a transaction and are fwd-ed statelessly */
	if ( p_msg->REQ_METHOD==METHOD_ACK) {
		DBG("DEBUG:tm:t_relay: forwarding ACK  statelessly \n");
		if (proxy==0) {
			uri = GET_RURI(p_msg);
			proxy=uri2proxy(GET_NEXT_HOP(p_msg), proto);
			if (proxy==0) {
					ret=E_BAD_ADDRESS;
					goto done;
			}
			proto=proxy->proto; /* uri2proxy set it correctly */
			ret=forward_request( p_msg , proxy, proto) ;
			free_proxy( proxy );	
			pkg_free( proxy );
		} else {
			proto=get_proto(proto, proxy->proto);
			ret=forward_request( p_msg , proxy, proto ) ;
		}
		goto done;
	}

	/* if replication flag is set, mark the transaction as local
	   so that replies will not be relaied */
	t=get_t();
	if (replicate) t->flags|=T_IS_LOCAL_FLAG;

	/* INVITE processing might take long, particularly because of DNS
	   look-ups -- let upstream know we're working on it */
	if (p_msg->REQ_METHOD==METHOD_INVITE )
	{
		DBG("DEBUG:tm:t_relay: new INVITE\n");
		if (!t_reply( t, p_msg , 100 ,
			"trying -- your call is important to us"))
				DBG("SER: ERROR: t_reply (100)\n");
	} 

	/* now go ahead and forward ... */
	ret=t_forward_nonack(t, p_msg, proxy, proto);
	if (ret<=0) {
		DBG( "ERROR:tm:t_relay_to:  t_forward_nonack returned error \n");
		/* we don't want to pass upstream any reply regarding replicating
		 * a request; replicated branch must stop at us*/
		if (!replicate) {
			reply_ret=kill_transaction( t );
			if (reply_ret>0) {
				/* we have taken care of all -- do nothing in
			  	script */
				DBG("ERROR: generation of a stateful reply "
					"on error succeeded\n");
				ret=0;
			}  else {
				DBG("ERROR: generation of a stateful reply "
					"on error failed\n");
			}
		}
	} else {
		DBG( "SER: new transaction fwd'ed\n");
	}

done:
	return ret;
}