Esempio n. 1
0
int sbranch_set_ruri(sip_msg_t *msg)
{
	str sv;
	flag_t old_bflags;
	branch_t *br;
	int ret;

	ret = 0;
	br = &_pv_sbranch;
	if(br->len==0)
		return -1;

	sv.s = br->uri;
	sv.len = br->len;

	if (rewrite_uri(msg, &sv) < 0) {
		LM_ERR("unable to rewrite Request-URI\n");
		ret = -3;
		goto error;
	}

	/* reset next hop address */
	reset_dst_uri(msg);
	if(br->dst_uri_len>0) {
		sv.s = br->dst_uri;
		sv.len = br->dst_uri_len;
		if (set_dst_uri(msg, &sv) < 0) {
			ret = -3;
			goto error;
		}
	}

	reset_path_vector(msg);
	if(br->path_len==0) {
		sv.s = br->path;
		sv.len = br->path_len;
		if(set_path_vector(msg, &sv) < 0) {
			ret = -4;
			goto error;
		}
	}

	reset_instance(msg);
	if (br->instance_len) {
		sv.s = br->instance;
		sv.len = br->instance_len;
	    if (set_instance(msg, &sv) < 0) {
			ret = -5;
			goto error;
	    }
	}

	reset_ruid(msg);
	if (br->ruid_len) {
		sv.s = br->ruid;
		sv.len = br->ruid_len;
	    if (set_ruid(msg, &sv) < 0) {
			ret = -6;
			goto error;
	    }
	}

	reset_ua(msg);
	if (br->location_ua_len) {
		sv.s = br->location_ua;
		sv.len = br->location_ua_len;
	    if (set_ua(msg, &sv) < 0) {
			ret = -7;
			goto error;
	    }
	}

	if (br->force_send_socket)
		set_force_socket(msg, br->force_send_socket);

	msg->reg_id = br->reg_id;
	set_ruri_q(br->q);
	old_bflags = 0;
	getbflagsval(0, &old_bflags);
	setbflagsval(0, old_bflags|br->flags);

	return 0;
error:
	return ret;
}
Esempio n. 2
0
/*! \brief
 * Lookup contact in the database and rewrite Request-URI
 * \return: -1 : not found
 *          -2 : found but method not allowed
 *          -3 : error
 */
int lookup(struct sip_msg* _m, udomain_t* _d, str* _uri)
{
	urecord_t* r;
	str aor, uri;
	sip_uri_t puri;
	ucontact_t* ptr = 0;
	int res;
	int ret;
	str path_dst;
	flag_t old_bflags;
	int i;
	str inst = {0};
	unsigned int ahash = 0;
	sr_xavp_t *xavp=NULL;
	sr_xavp_t *list=NULL;
	str xname = {"ruid", 4};
	sr_xval_t xval;

	ret = -1;

	if (_m->new_uri.s) uri = _m->new_uri;
	else uri = _m->first_line.u.request.uri;
	
	if (extract_aor((_uri)?_uri:&uri, &aor, &puri) < 0) {
		LM_ERR("failed to extract address of record\n");
		return -3;
	}
	/* check if gruu */
	if(puri.gr.s!=NULL)
	{
		if(puri.gr_val.len>0) {
			/* pub-gruu */
			inst = puri.gr_val;
			LM_DBG("looking up pub gruu [%.*s]\n", inst.len, inst.s);
		} else {
			/* temp-gruu */
			ahash = 0;
			inst = puri.user;
			for(i=inst.len-1; i>=0; i--)
			{
				if(inst.s[i]==REG_GRUU_SEP)
					break;
				ahash <<= 4;
				if(inst.s[i] >='0' && inst.s[i] <='9') ahash+=inst.s[i] -'0';
				else if (inst.s[i] >='a' && inst.s[i] <='f') ahash+=inst.s[i] -'a'+10;
				else if (inst.s[i] >='A' && inst.s[i] <='F') ahash+=inst.s[i] -'A'+10;
				else {
					LM_ERR("failed to extract temp gruu - invalid hash\n");
					return -3;
				}
			}
			if(i<0) {
				LM_ERR("failed to extract temp gruu - invalid format\n");
				return -3;
			}
			inst.len = i;
			LM_DBG("looking up temp gruu [%u / %.*s]\n", ahash, inst.len, inst.s);
		}
	}

	get_act_time();

	if(puri.gr.s==NULL || puri.gr_val.len>0)
	{
		/* aor or pub-gruu lookup */
		ul.lock_udomain(_d, &aor);
		res = ul.get_urecord(_d, &aor, &r);
		if (res > 0) {
			LM_DBG("'%.*s' Not found in usrloc\n", aor.len, ZSW(aor.s));
			ul.unlock_udomain(_d, &aor);
			return -1;
		}

		ptr = r->contacts;
		ret = -1;
		/* look first for an un-expired and suported contact */
		while (ptr) {
			if(VALID_CONTACT(ptr,act_time)) {
				if(allowed_method(_m,ptr)) {
					/* match on instance, if pub-gruu */
					if(inst.len>0) {
						if(reg_cmp_instances(&inst, &ptr->instance)==0)
						{
							/* pub-gruu - found by instance */
							LM_DBG("contact for [%.*s] found by pub gruu [%.*s]\n",
								aor.len, ZSW(aor.s), inst.len, inst.s);
							break;
						}
					} else {
						/* no-gruu - found by address */
						LM_DBG("contact for [%.*s] found by address\n",
								aor.len, ZSW(aor.s));
						break;
					}
				} else {
					LM_DBG("contact for [%.*s] cannot handle the SIP method\n",
							aor.len, ZSW(aor.s));
					ret = -2;
				}
			}
			ptr = ptr->next;
		}
		if (ptr==0) {
			/* nothing found */
			LM_DBG("'%.*s' has no valid contact in usrloc\n", aor.len, ZSW(aor.s));
			goto done;
		}
	} else {
		/* temp-gruu lookup */
		res = ul.get_urecord_by_ruid(_d, ahash, &inst, &r, &ptr);
		if(res<0) {
			LM_DBG("temp gruu '%.*s' not found in usrloc\n", aor.len, ZSW(aor.s));
			return -1;
		}
		aor = *ptr->aor;
		/* test if un-expired and suported contact */
		if( (ptr) && !(VALID_CONTACT(ptr,act_time)
					&& (ret=-2) && allowed_method(_m,ptr)))
			goto done;
		LM_DBG("contact for [%.*s] found by temp gruu [%.*s / %u]\n",
							aor.len, ZSW(aor.s), inst.len, inst.s, ahash);
	}

	ret = 1;
	if (ptr) {
		if (rewrite_uri(_m, &ptr->c) < 0) {
			LM_ERR("unable to rewrite Request-URI\n");
			ret = -3;
			goto done;
		}

		/* reset next hop address */
		reset_dst_uri(_m);

		/* add xavp with details of the record (ruid, ...) */
		if(reg_xavp_rcd.s!=NULL)
		{
			list = xavp_get(&reg_xavp_rcd, NULL);
			xavp = list;
			memset(&xval, 0, sizeof(sr_xval_t));
			xval.type = SR_XTYPE_STR;
			xval.v.s = ptr->ruid;
			xavp_add_value(&xname, &xval, &xavp);
			if(list==NULL)
			{
				/* no reg_xavp_rcd xavp in root list - add it */
				xval.type = SR_XTYPE_XAVP;
				xval.v.xavp = xavp;
				xavp_add_value(&reg_xavp_rcd, &xval, NULL);
			}
		}
		/* If a Path is present, use first path-uri in favour of
		 * received-uri because in that case the last hop towards the uac
		 * has to handle NAT. - agranig */
		if (ptr->path.s && ptr->path.len) {
			if (get_path_dst_uri(&ptr->path, &path_dst) < 0) {
				LM_ERR("failed to get dst_uri for Path\n");
				ret = -3;
				goto done;
			}
			if (set_path_vector(_m, &ptr->path) < 0) {
				LM_ERR("failed to set path vector\n");
				ret = -3;
				goto done;
			}
			if (set_dst_uri(_m, &path_dst) < 0) {
				LM_ERR("failed to set dst_uri of Path\n");
				ret = -3;
				goto done;
			}
		} else if (ptr->received.s && ptr->received.len) {
			if (set_dst_uri(_m, &ptr->received) < 0) {
				ret = -3;
				goto done;
			}
		}

		if (ptr->instance.len) {
		    if (set_instance(_m, &(ptr->instance)) < 0) {
				ret = -3;
				goto done;
		    }
		}
		
		_m->reg_id = ptr->reg_id;

		if (ptr->ruid.len) {
		    if (set_ruid(_m, &(ptr->ruid)) < 0) {
				ret = -3;
				goto done;
		    }
		}

		if (ptr->user_agent.len) {
		    if (set_ua(_m, &(ptr->user_agent)) < 0) {
				ret = -3;
				goto done;
		    }
		}

		set_ruri_q(ptr->q);

		old_bflags = 0;
		getbflagsval(0, &old_bflags);
		setbflagsval(0, old_bflags|ptr->cflags);

		if (ptr->sock)
			set_force_socket(_m, ptr->sock);

		if(ptr->xavp!=NULL) {
			xavp = xavp_clone_level_nodata(ptr->xavp);
			if(xavp_add(xavp, NULL)<0) {
				ret = -3;
				goto done;
			}
		}
		ptr = ptr->next;
	}

	/* if was gruu, no more branches */
	if(inst.len>0) goto done;

	/* Append branches if enabled */
	if (!cfg_get(registrar, registrar_cfg, append_branches)) goto done;

	for( ; ptr ; ptr = ptr->next ) {
		if (VALID_CONTACT(ptr, act_time) && allowed_method(_m, ptr)) {
			path_dst.len = 0;
			if(ptr->path.s && ptr->path.len 
			&& get_path_dst_uri(&ptr->path, &path_dst) < 0) {
				LM_ERR("failed to get dst_uri for Path\n");
				continue;
			}

			/* The same as for the first contact applies for branches 
			 * regarding path vs. received. */
			LM_DBG("instance is %.*s\n",
			       ptr->instance.len, ptr->instance.s);
			if (append_branch(_m, &ptr->c,
					  path_dst.len?&path_dst:&ptr->received,
					  &ptr->path, ptr->q, ptr->cflags,
					  ptr->sock,
					  ptr->instance.len?&(ptr->instance):0,
				          ptr->instance.len?ptr->reg_id:0,
					  &ptr->ruid, &ptr->user_agent)
			    == -1) {
				LM_ERR("failed to append a branch\n");
				/* Also give a chance to the next branches*/
				continue;
			}
			if(ptr->xavp!=NULL) {
				xavp = xavp_clone_level_nodata(ptr->xavp);
				if(xavp_insert(xavp, nr_branches, NULL)<0) {
					ret = -3;
					goto done;
				}
			}
		}
	}

done:
	ul.release_urecord(r);
	ul.unlock_udomain(_d, &aor);
	return ret;
}