/
subscribe.c
2280 lines (1962 loc) · 57.8 KB
/
subscribe.c
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/*
* presence module - presence server implementation
*
* Copyright (C) 2006 Voice Sistem S.R.L.
*
* This file is part of opensips, a free SIP serves.
*
* opensips 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
*
* opensips 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* History:
* --------
* 2006-08-15 initial version (Anca Vamanu)
* 2010-10-19 support for extra headers (osas)
*/
#include "../../ut.h"
#include "../../usr_avp.h"
#include "../../mod_fix.h"
#include "../../data_lump_rpl.h"
#include "../../parser/parse_expires.h"
#include "../../parser/parse_event.h"
#include "../../parser/contact/parse_contact.h"
#include "../pua/hash.h"
#include "presence.h"
#include "subscribe.h"
#include "utils_func.h"
#include "notify.h"
#include "clustering.h"
int get_stored_info(struct sip_msg* msg, subs_t* subs, int* error_ret,
str* reply_str);
int get_database_info(struct sip_msg* msg, subs_t* subs, int* error_ret,
str* reply_str);
int get_db_subs_auth(subs_t* subs, int* found);
int insert_db_subs_auth(subs_t* subs);
int insert_subs_db(subs_t* s);
static str su_200_rpl = str_init("OK");
static str pu_481_rpl = str_init("Subscription does not exist");
static str pu_400_rpl = str_init("Bad request");
static str pu_500_rpl = str_init("Server Internal Error");
static str pu_489_rpl = str_init("Bad Event");
int send_2XX_reply(struct sip_msg * msg, int reply_code, int lexpire,
str *rtag, str* local_contact)
{
char * hdr_append=NULL;
int lexpire_len;
char *lexpire_s;
int len;
char *p;
if(lexpire < 0 )
lexpire = 0;
lexpire_s = int2str((unsigned long)lexpire, &lexpire_len);
len = 9 /*"Expires: "*/ + lexpire_len + CRLF_LEN
+ 10 /*"Contact: <"*/ + local_contact->len + 1 /*">"*/ + CRLF_LEN;
hdr_append = (char *)pkg_malloc( len );
if(hdr_append == NULL)
{
ERR_MEM(PKG_MEM_STR);
}
p = hdr_append;
/* expires header */
memcpy(p, "Expires: ", 9);
p += 9;
memcpy(p,lexpire_s,lexpire_len);
p += lexpire_len;
/* contact header */
memcpy(p, CRLF "Contact: <", CRLF_LEN+10);
p += CRLF_LEN + 10;
memcpy(p,local_contact->s,local_contact->len);
p += local_contact->len;
memcpy(p, ">" CRLF, 1+CRLF_LEN);
p += 1+CRLF_LEN;
if (add_lump_rpl( msg, hdr_append, p-hdr_append, LUMP_RPL_HDR)==0 )
{
LM_ERR("unable to add lump_rl\n");
goto error;
}
if( sigb.reply( msg, reply_code, &su_200_rpl, rtag)== -1)
{
LM_ERR("sending reply\n");
goto error;
}
pkg_free(hdr_append);
return 0;
error:
if (hdr_append)
pkg_free(hdr_append);
return -1;
}
int delete_db_subs(str pres_uri, str ev_stored_name, str to_tag)
{
static db_ps_t my_ps = NULL;
db_key_t query_cols[5];
db_val_t query_vals[5];
int n_query_cols= 0;
query_cols[n_query_cols] = &str_presentity_uri_col;
query_vals[n_query_cols].type = DB_STR;
query_vals[n_query_cols].nul = 0;
query_vals[n_query_cols].val.str_val = pres_uri;
n_query_cols++;
query_cols[n_query_cols] = &str_event_col;
query_vals[n_query_cols].type = DB_STR;
query_vals[n_query_cols].nul = 0;
query_vals[n_query_cols].val.str_val = ev_stored_name;
n_query_cols++;
query_cols[n_query_cols] = &str_to_tag_col;
query_vals[n_query_cols].type = DB_STR;
query_vals[n_query_cols].nul = 0;
query_vals[n_query_cols].val.str_val = to_tag;
n_query_cols++;
if (pa_dbf.use_table(pa_db, &active_watchers_table) < 0)
{
LM_ERR("in use table sql operation\n");
return -1;
}
CON_PS_REFERENCE(pa_db) = &my_ps;
LM_DBG("delete subs \n");
if(pa_dbf.delete(pa_db, query_cols, 0, query_vals,
n_query_cols)< 0 )
{
LM_ERR("sql delete failed\n");
return -1;
}
return 0;
}
int update_subs_db(subs_t* subs, int type)
{
static db_ps_t my_ps_remote = NULL, my_ps_local = NULL;
db_key_t query_cols[22], update_keys[8];
db_val_t query_vals[22], update_vals[8];
int n_update_cols= 0;
int n_query_cols = 0;
if (pa_dbf.use_table(pa_db, &active_watchers_table) < 0)
{
LM_ERR("in use table sql operation\n");
return -1;
}
query_cols[n_query_cols] = &str_presentity_uri_col;
query_vals[n_query_cols].type = DB_STR;
query_vals[n_query_cols].nul = 0;
query_vals[n_query_cols].val.str_val = subs->pres_uri;
n_query_cols++;
query_cols[n_query_cols] = &str_watcher_username_col;
query_vals[n_query_cols].type = DB_STR;
query_vals[n_query_cols].nul = 0;
query_vals[n_query_cols].val.str_val = subs->from_user;
n_query_cols++;
query_cols[n_query_cols] = &str_watcher_domain_col;
query_vals[n_query_cols].type = DB_STR;
query_vals[n_query_cols].nul = 0;
query_vals[n_query_cols].val.str_val = subs->from_domain;
n_query_cols++;
query_cols[n_query_cols] = &str_event_col;
query_vals[n_query_cols].type = DB_STR;
query_vals[n_query_cols].nul = 0;
query_vals[n_query_cols].val.str_val = subs->event->name;
n_query_cols++;
query_cols[n_query_cols] = &str_event_id_col;
query_vals[n_query_cols].type = DB_STR;
query_vals[n_query_cols].nul = 0;
if(subs->event_id.s)
{
query_vals[n_query_cols].val.str_val = subs->event_id;
}
else
{
query_vals[n_query_cols].val.str_val.s = "";
query_vals[n_query_cols].val.str_val.len = 0;
}
n_query_cols++;
query_cols[n_query_cols] = &str_callid_col;
query_vals[n_query_cols].type = DB_STR;
query_vals[n_query_cols].nul = 0;
query_vals[n_query_cols].val.str_val = subs->callid;
n_query_cols++;
query_cols[n_query_cols] = &str_to_tag_col;
query_vals[n_query_cols].type = DB_STR;
query_vals[n_query_cols].nul = 0;
query_vals[n_query_cols].val.str_val = subs->to_tag;
n_query_cols++;
query_cols[n_query_cols] = &str_from_tag_col;
query_vals[n_query_cols].type = DB_STR;
query_vals[n_query_cols].nul = 0;
query_vals[n_query_cols].val.str_val = subs->from_tag;
n_query_cols++;
if(type & REMOTE_TYPE)
{
update_keys[n_update_cols] = &str_expires_col;
update_vals[n_update_cols].type = DB_INT;
update_vals[n_update_cols].nul = 0;
update_vals[n_update_cols].val.int_val = subs->expires + (int)time(NULL);
n_update_cols++;
update_keys[n_update_cols] = &str_remote_cseq_col;
update_vals[n_update_cols].type = DB_INT;
update_vals[n_update_cols].nul = 0;
update_vals[n_update_cols].val.int_val = subs->remote_cseq;
n_update_cols++;
update_keys[n_update_cols] = &str_contact_col;
update_vals[n_update_cols].type = DB_STR;
update_vals[n_update_cols].nul = 0;
update_vals[n_update_cols].val.str_val = subs->contact;
n_update_cols++;
CON_PS_REFERENCE(pa_db) = &my_ps_remote;
}
else
{
update_keys[n_update_cols] = &str_local_cseq_col;
update_vals[n_update_cols].type = DB_INT;
update_vals[n_update_cols].nul = 0;
update_vals[n_update_cols].val.int_val = subs->local_cseq+ 1;
n_update_cols++;
update_keys[n_update_cols] = &str_version_col;
update_vals[n_update_cols].type = DB_INT;
update_vals[n_update_cols].nul = 0;
update_vals[n_update_cols].val.int_val = subs->version+ 1;
n_update_cols++;
CON_PS_REFERENCE(pa_db) = &my_ps_local;
}
update_keys[n_update_cols] = &str_status_col;
update_vals[n_update_cols].type = DB_INT;
update_vals[n_update_cols].nul = 0;
update_vals[n_update_cols].val.int_val = subs->status;
n_update_cols++;
update_keys[n_update_cols] = &str_reason_col;
update_vals[n_update_cols].type = DB_STR;
update_vals[n_update_cols].nul = 0;
update_vals[n_update_cols].val.str_val = subs->reason;
n_update_cols++;
if(pa_dbf.update( pa_db,query_cols, 0, query_vals,
update_keys, update_vals, n_query_cols,n_update_cols)<0)
{
LM_ERR("updating presence information\n");
return -1;
}
return 0;
}
int subs_process_insert_status(subs_t* subs)
{
struct sip_uri uri;
/*default 'pending' status */
subs->status= PENDING_STATUS;
subs->reason.s= NULL;
subs->reason.len= 0;
if(parse_uri(subs->pres_uri.s, subs->pres_uri.len, &uri)< 0)
{
LM_ERR("parsing uri\n");
goto error;
}
if(subs->event->get_rules_doc(&uri.user, &uri.host, &subs->auth_rules_doc)< 0)
{
LM_ERR("getting rules doc\n");
goto error;
}
if(subs->event->get_auth_status(subs)< 0)
{
LM_ERR("in event specific function is_watcher_allowed\n");
goto error;
}
if(get_status_str(subs->status)== NULL)
{
LM_ERR("wrong status= %d\n", subs->status);
goto error;
}
if(insert_db_subs_auth(subs)< 0)
{
LM_ERR("while inserting record in watchers table\n");
goto error;
}
return 0;
error:
return -1;
}
int update_subscription(struct sip_msg* msg, subs_t* subs, int init_req)
{
unsigned int hash_code;
int reply_code= 200;
if(subs->event->type & PUBL_TYPE)
reply_code=(subs->status==PENDING_STATUS)?202:200;
hash_code= core_hash(&subs->pres_uri, &subs->event->name, shtable_size);
if(init_req ==0) /*if a SUBSCRIBE within a dialog */
{
if(subs->expires == 0)
{
LM_DBG("expires=0, deleting subscription from "
"[%.*s@%.*s] to [%.*s]\n",
subs->from_user.len, subs->from_user.s, subs->from_domain.len,
subs->from_domain.s, subs->pres_uri.len, subs->pres_uri.s);
if(delete_db_subs(subs->pres_uri,subs->event->name,subs->to_tag)<0)
{
LM_ERR("deleting subscription record from database\n");
goto error;
}
/* delete record from hash table also */
subs->local_cseq= delete_shtable(subs_htable,hash_code,
subs->to_tag);
if( msg && send_2XX_reply(msg, reply_code, subs->expires, 0,
&subs->local_contact) <0)
{
LM_ERR("sending %d OK\n", reply_code);
goto error;
}
goto send_notify;
}
subs->expires+= expires_offset;
if(update_shtable(subs_htable, hash_code, subs, REMOTE_TYPE)< 0)
{
LM_DBG("updating subscription record in hash table failed\n");
if(!fallback2db)
goto error;
}
if(fallback2db)
{
if(update_subs_db(subs, REMOTE_TYPE)< 0)
{
LM_ERR("updating subscription in database table\n");
goto error;
}
}
if(msg && send_2XX_reply(msg, reply_code, subs->expires, 0,
&subs->local_contact)<0)
{
LM_ERR("sending 2XX reply\n");
goto error;
}
}
else
{
if(msg && send_2XX_reply(msg, reply_code, subs->expires, &subs->to_tag,
&subs->local_contact)<0)
{
LM_ERR("sending 2XX reply\n");
goto error;
}
if(subs->expires!= 0)
{
subs->expires += expires_offset;
if(insert_shtable(subs_htable,hash_code,subs)< 0)
{
LM_ERR("inserting new record in subs_htable\n");
goto error;
}
if(fallback2db)
{
if(insert_subs_db(subs) < 0)
{
LM_ERR("failed to insert subscription in database\n");
goto error;
}
}
}
/*otherwise there is a subscription outside a dialog with expires= 0
* no update in database, but should try to send Notify */
}
/* send Notifies */
send_notify:
if((subs->event->type & PUBL_TYPE) && subs->event->wipeer)
{
LM_DBG("send Notify with winfo\n");
if(query_db_notify(&subs->pres_uri, subs->event->wipeer, (subs->expires==0)?NULL:subs)< 0)
{
LM_ERR("Could not send notify winfo\n");
goto error;
}
}
LM_INFO("notify\n");
if(notify(subs, NULL, NULL, 0 , NULL, 0)< 0)
{
LM_ERR("Failed to send notify request\n");
goto error;
}
return 0;
error:
return -1;
}
void msg_watchers_clean(unsigned int ticks,void *param)
{
db_key_t db_keys[2];
db_val_t db_vals[2];
db_op_t db_ops[2] ;
LM_DBG("cleaning pending subscriptions\n");
db_keys[0] = &str_inserted_time_col;
db_ops[0] = OP_LT;
db_vals[0].type = DB_INT;
db_vals[0].nul = 0;
db_vals[0].val.int_val = (int)time(NULL)- waiting_subs_time;
db_keys[1] = &str_status_col;
db_ops [1] = OP_EQ;
db_vals[1].type = DB_INT;
db_vals[1].nul = 0;
db_vals[1].val.int_val = PENDING_STATUS;
if (pa_dbf.use_table(pa_db, &watchers_table) < 0)
{
LM_ERR("unsuccessful use_table sql operation\n");
return;
}
if (pa_dbf.delete(pa_db, db_keys, db_ops, db_vals, 2) < 0)
LM_ERR("cleaning pending subscriptions\n");
}
/*
* Function called from the script to process a SUBSCRIBE request
* returns:
* 1 : success
* -1: error
* - sends a reply in all cases (success or error).
* TODO replace -1 return code in error case with 0 ( exit from the script)
* */
int handle_subscribe(struct sip_msg* msg, int* force_active_param, str* tag)
{
int init_req = 0;
subs_t subs;
pres_ev_t* event= NULL;
event_t* parsed_event= NULL;
param_t* ev_param= NULL;
int found = 0;
str reason= {0, 0};
int reply_code;
str reply_str;
int ret;
/* ??? rename to avoid collisions with other symbols */
counter++;
memset(&subs, 0, sizeof(subs_t));
reply_code= 400;
reply_str= pu_400_rpl;
if( parse_headers(msg,HDR_EOH_F, 0)==-1 )
{
LM_ERR("parsing headers\n");
goto error;
}
/* inspecting the Event header field */
if(msg->event && msg->event->body.len > 0)
{
if (!msg->event->parsed && (parse_event(msg->event) < 0))
{
LM_ERR("bad Event header\n");
goto error;
}
if(((event_t*)msg->event->parsed)->parsed == EVENT_OTHER)
{
LM_ERR("unrecognized value [%.*s] in Event header\n",
msg->event->body.len, msg->event->body.s);
goto bad_event;
}
} else {
LM_ERR("Missing Event header\n");
goto bad_event;
}
/* search event in the list */
parsed_event= (event_t*)msg->event->parsed;
event= search_event(parsed_event);
if(event== NULL)
{
LM_ERR("un-registered support for known event [%.*s]\n",
parsed_event->text.len, parsed_event->text.s);
goto bad_event;
}
subs.event= event;
/* extract the id if any*/
ev_param= parsed_event->params;
while(ev_param)
{
if(ev_param->name.len==2 && strncasecmp(ev_param->name.s, "id", 2)==0)
{
subs.event_id= ev_param->body;
break;
}
ev_param= ev_param->next;
}
ret = extract_sdialog_info(&subs, msg, max_expires_subscribe, &init_req,
server_address);
if(ret< 0)
{
LM_ERR("failed to extract dialog information\n");
if(ret== -2)
{
reply_code= 500;
reply_str= pu_500_rpl;
}
goto error;
}
/* from now one most of the possible error are due to fail
* in internal processing */
reply_code= 500;
reply_str= pu_500_rpl;
if (tag) {
subs.sh_tag = *tag;
if (c_api.shtag_get( &subs.sh_tag, pres_cluster_id)<0) {
LM_ERR("failed to lookup the <%.*s> sharing tag\n",
subs.sh_tag.len, subs.sh_tag.s);
goto error;
}
}
/* getting presentity uri from Request-URI if initial subscribe;
* or else from database*/
if(init_req)
{
if(parsed_event->parsed!= EVENT_DIALOG_SLA)
{
if( parse_sip_msg_uri(msg)< 0)
{
LM_ERR("failed to parse R-URI\n");
reply_code= 400;
reply_str= pu_400_rpl;
goto error;
}
if(uandd_to_uri(msg->parsed_uri.user, msg->parsed_uri.host,
&subs.pres_uri)< 0)
{
LM_ERR("failed to construct uri from user and domain\n");
goto error;
}
}
}
else
{
if(get_stored_info(msg, &subs, &reply_code, &reply_str )< 0)
{
LM_ERR("getting stored info\n");
goto error;
}
reason= subs.reason;
}
/* call event specific subscription handling */
if(event->evs_subs_handl)
{
if(event->evs_subs_handl(msg, &subs, &reply_code, &reply_str)< 0)
{
LM_ERR("in event specific subscription handling\n");
goto error;
}
}
/* if dialog initiation Subscribe - get subscription state */
if(init_req)
{
if(!event->req_auth ||(force_active_param && *force_active_param == 1))
subs.status = ACTIVE_STATUS;
else
{
/* query in watchers_table - if negative reply - server error */
if(get_db_subs_auth(&subs, &found) < 0)
{
LM_ERR("getting subscription status from watchers table\n");
goto error;
}
if(found== 0)
{
if( subs_process_insert_status(&subs) < 0)
{
LM_ERR("Failed to extract and insert authorization status\n");
goto error;
}
}
else
{
reason= subs.reason;
}
}
}
/* check if correct status */
if(get_status_str(subs.status)== NULL)
{
LM_ERR("wrong status\n");
goto error;
}
LM_DBG("subscription status= %s - %s\n", get_status_str(subs.status),
found==0?"inserted":"found in watcher table");
if(update_subscription(msg, &subs, init_req) <0)
{
LM_ERR("in update_subscription\n");
goto error_free;
}
if(subs.auth_rules_doc)
{
pkg_free(subs.auth_rules_doc->s);
pkg_free(subs.auth_rules_doc);
}
if(reason.s)
pkg_free(reason.s);
if(subs.pres_uri.s)
pkg_free(subs.pres_uri.s);
if(subs.record_route.s)
pkg_free(subs.record_route.s);
return 1;
bad_event:
LM_INFO("Missing or unsupported event header field value\n");
if(parsed_event && parsed_event->text.s)
LM_INFO("\tevent= %.*s\n",parsed_event->text.len,parsed_event->text.s);
reply_code= BAD_EVENT_CODE;
reply_str= pu_489_rpl;
error:
if(send_error_reply(msg, reply_code, reply_str)< 0)
{
LM_ERR("failed to send reply on error case\n");
}
error_free:
if(subs.pres_uri.s)
pkg_free(subs.pres_uri.s);
if(subs.auth_rules_doc)
{
if(subs.auth_rules_doc->s)
pkg_free(subs.auth_rules_doc->s);
pkg_free(subs.auth_rules_doc);
}
if(reason.s)
pkg_free(reason.s);
if(subs.record_route.s)
pkg_free(subs.record_route.s);
return -1;
}
int extract_sdialog_info(subs_t* subs,struct sip_msg* msg, int mexp,
int* init_req, str local_address)
{
str rec_route= {0, 0};
int rt = 0;
contact_body_t *b;
struct to_body *pto, *pfrom = NULL;
int lexpire;
struct sip_uri uri;
int err_ret = -1;
/* examine the expire header field */
if(msg->expires && msg->expires->body.len > 0)
{
if (!msg->expires->parsed && (parse_expires(msg->expires) < 0))
{
LM_ERR("cannot parse Expires header\n");
goto error;
}
lexpire = ((exp_body_t*)msg->expires->parsed)->val;
LM_DBG("'Expires' header found, value= %d\n", lexpire);
}
else
{
LM_DBG("'expires' not found; default=%d\n",subs->event->default_expires);
lexpire = subs->event->default_expires;
}
if(lexpire > mexp)
lexpire = mexp;
subs->expires = lexpire;
if ( (!msg->to && parse_headers(msg, HDR_TO_F, 0)<0) || !msg->to ) {
LM_ERR("bad request or missing TO hdr\n");
goto error;
}
pto = get_to(msg);
if (pto == NULL || pto->error != PARSE_OK) {
LM_ERR("failed to parse TO header\n");
goto error;
}
if( pto->parsed_uri.user.s && pto->parsed_uri.host.s &&
pto->parsed_uri.user.len && pto->parsed_uri.host.len)
{
subs->to_user = pto->parsed_uri.user;
subs->to_domain = pto->parsed_uri.host;
}
else
{
if(parse_uri(pto->uri.s, pto->uri.len, &uri)< 0)
{
LM_ERR("while parsing uri\n");
goto error;
}
subs->to_user = uri.user;
subs->to_domain = uri.host;
}
/* examine the from header */
if (!msg->from || !msg->from->body.s)
{
LM_ERR("cannot find 'from' header!\n");
goto error;
}
if (msg->from->parsed == NULL)
{
LM_DBG("'From' header not parsed\n");
/* parsing from header */
if ( parse_from_header( msg )<0 )
{
LM_ERR("cannot parse From header\n");
goto error;
}
}
pfrom = (struct to_body*)msg->from->parsed;
if( pfrom->parsed_uri.user.s && pfrom->parsed_uri.host.s &&
pfrom->parsed_uri.user.len && pfrom->parsed_uri.host.len)
{
subs->from_user = pfrom->parsed_uri.user;
subs->from_domain = pfrom->parsed_uri.host;
}
else
{
if(parse_uri(pfrom->uri.s, pfrom->uri.len, &uri)< 0)
{
LM_ERR("while parsing uri\n");
goto error;
}
subs->from_user = uri.user;
subs->from_domain = uri.host;
}
/*check if the message is an initial request */
if (pto->tag_value.s==NULL || pto->tag_value.len==0 )
{
LM_DBG("initial request\n");
*init_req = 1;
}
else
{
subs->to_tag = pto->tag_value;
*init_req = 0;
}
if( msg->callid==NULL || msg->callid->body.s==NULL)
{
LM_ERR("cannot parse callid header\n");
goto error;
}
subs->callid = msg->callid->body;
if( msg->cseq==NULL || msg->cseq->body.s==NULL)
{
LM_ERR("cannot parse cseq header\n");
goto error;
}
if (str2int( &(get_cseq(msg)->number), &subs->remote_cseq)!=0 )
{
LM_ERR("cannot parse cseq number\n");
goto error;
}
if( msg->contact==NULL || msg->contact->body.s==NULL)
{
LM_ERR("cannot parse contact header\n");
goto error;
}
if( parse_contact(msg->contact) <0 )
{
LM_ERR(" cannot parse contact"
" header\n");
goto error;
}
b= (contact_body_t* )msg->contact->parsed;
if(b == NULL)
{
LM_ERR("cannot parse contact header\n");
goto error;
}
subs->contact = b->contacts->uri;
LM_DBG("subs->contact= %.*s - len = %d\n",subs->contact.len,
subs->contact.s, subs->contact.len);
if(subs->event->evp->parsed== EVENT_DIALOG_SLA)
{
pv_value_t tok;
/* if pseudovaraible set use that value */
if(bla_presentity_spec_param.s) /* if parameter defined */
{
memset(&tok, 0, sizeof(pv_value_t));
if(pv_get_spec_value(msg, &bla_presentity_spec, &tok) < 0) /* if value set */
{
LM_ERR("Failed to get bla_presentity value\n");
goto error;
}
if(!(tok.flags&PV_VAL_STR))
{
LM_ERR("Wrong value in bla_presentity pvar\n");
goto error;
}
if(parse_uri(tok.rs.s, tok.rs.len, &uri)< 0)
{
LM_ERR("Not a valid value, must be a uri [%.*s]\n", tok.rs.len, tok.rs.s);
goto error;
}
if(uandd_to_uri(uri.user, uri.host, &subs->pres_uri)< 0)
{
LM_ERR("failed to construct uri\n");
goto error;
}
}
else
{
/* user_contact@from_domain */
if(parse_uri(subs->contact.s, subs->contact.len, &uri)< 0)
{
LM_ERR("failed to parse contact uri\n");
goto error;
}
if(uandd_to_uri(uri.user, subs->from_domain, &subs->pres_uri)< 0)
{
LM_ERR("failed to construct uri\n");
goto error;
}
}
}
/*process record route and add it to a string*/
if(*init_req && msg->record_route!=NULL)
{
rt = print_rr_body(msg->record_route, &rec_route, 0, 0, NULL);
if(rt != 0)
{
LM_ERR("processing the record route [%d]\n", rt);
rec_route.s=NULL;
rec_route.len=0;
// goto error;
}
}
subs->record_route = rec_route;
subs->sockinfo= msg->rcv.bind_address;
if( pfrom->tag_value.s ==NULL || pfrom->tag_value.len == 0)
{
LM_ERR("no from tag value present\n");
goto error;
}
subs->from_tag = pfrom->tag_value;
subs->version = 0;
if(!local_address.s || !local_address.len)
{
if(get_local_contact(msg->rcv.bind_address, &subs->local_contact) < 0)
{
LM_ERR("in function get_local_contact\n");
err_ret = -2;
goto error;
}
}
else
subs->local_contact= local_address;
return 0;
error:
return err_ret;
/*
* -1 - bad message
* -2 - internal error
* */
}
/*
* function that queries 'active_watchers' table for stored subscription dialog
* - sets reply_code and reply_str in error case if different than server error
* */
int get_stored_info(struct sip_msg* msg, subs_t* subs, int* reply_code,
str* reply_str)
{
str pres_uri= {0, 0}, reason={0, 0};
subs_t* s;
int i;
unsigned int hash_code;
/* first try to_user== pres_user and to_domain== pres_domain */
if(subs->pres_uri.s == NULL)
{
uandd_to_uri(subs->to_user, subs->to_domain, &pres_uri);
if(pres_uri.s== NULL)
{
LM_ERR("creating uri from user and domain\n");
return -1;
}
}
else
pres_uri = subs->pres_uri;
hash_code= core_hash(&pres_uri, &subs->event->name, shtable_size);
lock_get(&subs_htable[hash_code].lock);
i= hash_code;
s= search_shtable(subs_htable, subs->callid, subs->to_tag,
subs->from_tag, hash_code);
if(s)
{
goto found_rec;
}
lock_release(&subs_htable[hash_code].lock);
if(subs->pres_uri.s)
goto not_found;
pkg_free(pres_uri.s);
pres_uri.s= NULL;
LM_DBG("record not found using R-URI search iteratively\n");
/* take one row at a time */
for(i= 0; i< shtable_size; i++)
{
lock_get(&subs_htable[i].lock);