void update_a_sub(subs_t *subs_copy)
{
xmlDocPtr doc = NULL;
xmlNodePtr service_node = NULL;
int now = (int)time(NULL);
if (subs_copy->expires < now)
{
subs_copy->expires = 0;
LM_WARN("found expired subscription for: %.*s\n",
subs_copy->pres_uri.len, subs_copy->pres_uri.s);
goto done;
}
subs_copy->expires -= now;
if(rls_get_service_list(&subs_copy->pres_uri, &subs_copy->watcher_user,
&subs_copy->watcher_domain, &service_node, &doc)<0)
{
LM_ERR("failed getting resource list for: %.*s\n",
subs_copy->pres_uri.len, subs_copy->pres_uri.s);
goto done;
}
if(doc==NULL)
{
LM_WARN("no document returned for: %.*s\n",
subs_copy->pres_uri.len, subs_copy->pres_uri.s);
goto done;
}
subs_copy->internal_update_flag = INTERNAL_UPDATE_TRUE;
if(resource_subscriptions(subs_copy, service_node)< 0)
{
LM_ERR("failed sending subscribe requests to resources in list\n");
goto done;
}
done:
if (doc != NULL)
xmlFreeDoc(doc);
pkg_free(subs_copy);
}
static void timer_send_full_state_notifies(int round)
{
db_key_t query_cols[1], result_cols[22], update_cols[1];
db_val_t query_vals[1], update_vals[1], *values;
db_row_t *rows;
db1_res_t *result = NULL;
int n_result_cols = 0, i;
int pres_uri_col, tuser_col, tdomain_col, fuser_col, fdomain_col;
int wuser_col, wdomain_col, callid_col, to_tag_col, from_tag_col;
int sockinfo_col, lcontact_col, contact_col, rroute_col, event_id_col;
int reason_col, event_col, lcseq_col, rcseq_col, status_col;
int version_col, expires_col;
subs_t sub;
str ev_sname;
event_t parsed_event;
xmlDocPtr doc = NULL;
xmlNodePtr service_node = NULL;
int now = (int)time(NULL);
query_cols[0] = &str_updated_col;
query_vals[0].type = DB1_INT;
query_vals[0].nul = 0;
query_vals[0].val.int_val = round;
result_cols[pres_uri_col = n_result_cols++] = &str_presentity_uri_col;
result_cols[tuser_col = n_result_cols++] = &str_to_user_col;
result_cols[tdomain_col = n_result_cols++] = &str_to_domain_col;
result_cols[fuser_col = n_result_cols++] = &str_from_user_col;
result_cols[fdomain_col = n_result_cols++] = &str_from_domain_col;
result_cols[wuser_col = n_result_cols++] = &str_watcher_username_col;
result_cols[wdomain_col = n_result_cols++] = &str_watcher_domain_col;
result_cols[callid_col = n_result_cols++] = &str_callid_col;
result_cols[to_tag_col = n_result_cols++] = &str_to_tag_col;
result_cols[from_tag_col = n_result_cols++] = &str_from_tag_col;
result_cols[sockinfo_col = n_result_cols++] = &str_socket_info_col;
result_cols[lcontact_col = n_result_cols++] = &str_local_contact_col;
result_cols[contact_col = n_result_cols++] = &str_contact_col;
result_cols[rroute_col = n_result_cols++] = &str_record_route_col;
result_cols[event_id_col = n_result_cols++] = &str_event_id_col;
result_cols[reason_col = n_result_cols++] = &str_reason_col;
result_cols[event_col = n_result_cols++] = &str_event_col;
result_cols[lcseq_col = n_result_cols++] = &str_local_cseq_col;
result_cols[rcseq_col = n_result_cols++] = &str_remote_cseq_col;
result_cols[status_col = n_result_cols++] = &str_status_col;
result_cols[version_col = n_result_cols++] = &str_version_col;
result_cols[expires_col = n_result_cols++] = &str_expires_col;
update_cols[0] = &str_updated_col;
update_vals[0].type = DB1_INT;
update_vals[0].nul = 0;
update_vals[0].val.int_val = NO_UPDATE_TYPE;
if (rls_dbf.use_table(rls_db, &rlsubs_table) < 0)
{
LM_ERR("use table failed\n");
goto done;
}
if (dbmode == RLS_DB_ONLY && rls_dbf.start_transaction)
{
if (rls_dbf.start_transaction(rls_db) < 0)
{
LM_ERR("in start_transaction\n");
goto done;
}
}
/* Step 1: Find rls_watchers that require full-state notification */
if (rls_dbf.query(rls_db, query_cols, 0, query_vals, result_cols,
1, n_result_cols, 0, &result) < 0)
{
LM_ERR("in sql query\n");
goto done;
}
if(result== NULL || result->n<= 0)
goto done;
/* Step 2: Reset the update flag so we do not full-state notify
these watchers again */
if(rls_dbf.update(rls_db, query_cols, 0, query_vals, update_cols,
update_vals, 1, 1)< 0)
{
LM_ERR("in sql update\n");
goto done;
}
if (dbmode == RLS_DB_ONLY && rls_dbf.end_transaction)
{
if (rls_dbf.end_transaction(rls_db) < 0)
{
LM_ERR("in end_transaction\n");
goto done;
}
}
/* Step 3: Full-state notify each watcher we found */
rows = RES_ROWS(result);
for (i = 0; i < RES_ROW_N(result); i++)
{
memset(&sub, 0, sizeof(subs_t));
values = ROW_VALUES(&rows[i]);
EXTRACT_STRING(sub.pres_uri, VAL_STRING(&values[pres_uri_col]));
EXTRACT_STRING(sub.to_user, VAL_STRING(&values[tuser_col]));
EXTRACT_STRING(sub.to_domain, VAL_STRING(&values[tdomain_col]));
EXTRACT_STRING(sub.from_user, VAL_STRING(&values[fuser_col]));
EXTRACT_STRING(sub.from_domain, VAL_STRING(&values[fdomain_col]));
EXTRACT_STRING(sub.watcher_user, VAL_STRING(&values[wuser_col]));
EXTRACT_STRING(sub.watcher_domain, VAL_STRING(&values[wdomain_col]));
EXTRACT_STRING(sub.callid, VAL_STRING(&values[callid_col]));
EXTRACT_STRING(sub.to_tag, VAL_STRING(&values[to_tag_col]));
EXTRACT_STRING(sub.from_tag, VAL_STRING(&values[from_tag_col]));
EXTRACT_STRING(sub.sockinfo_str, VAL_STRING(&values[sockinfo_col]));
EXTRACT_STRING(sub.local_contact, VAL_STRING(&values[lcontact_col]));
EXTRACT_STRING(sub.contact, VAL_STRING(&values[contact_col]));
EXTRACT_STRING(sub.record_route, VAL_STRING(&values[rroute_col]));
EXTRACT_STRING(sub.event_id, VAL_STRING(&values[event_id_col]));
EXTRACT_STRING(sub.reason, VAL_STRING(&values[reason_col]));
EXTRACT_STRING(ev_sname, VAL_STRING(&values[event_col]));
sub.event = pres_contains_event(&ev_sname, &parsed_event);
if (sub.event == NULL)
{
LM_ERR("event not found and set to NULL\n");
goto done;
}
sub.local_cseq = VAL_INT(&values[lcseq_col]);
sub.remote_cseq = VAL_INT(&values[rcseq_col]);
sub.status = VAL_INT(&values[status_col]);
sub.version = VAL_INT(&values[version_col]);
if (VAL_INT(&values[expires_col]) > now + rls_expires_offset)
{
sub.expires = VAL_INT(&values[expires_col]) - now;
if (rls_get_service_list(&sub.pres_uri, &sub.watcher_user,
&sub.watcher_domain, &service_node, &doc) < 0)
{
LM_ERR("failed getting resource list\n");
goto done;
}
if (doc == NULL)
{
LM_WARN("no document returned for uri <%.*s>\n",
sub.pres_uri.len, sub.pres_uri.s);
goto done;
}
if (send_full_notify(&sub, service_node, &sub.pres_uri, 0) < 0)
{
LM_ERR("failed sending full state notify\n");
goto done;
}
xmlFreeDoc(doc);
doc = NULL;
}
else
{
sub.expires = 0;
rls_send_notify(&sub, NULL, NULL, NULL);
delete_rlsdb(&sub.callid, &sub.to_tag, &sub.from_tag);
}
}
done:
if (result != NULL)
rls_dbf.free_result(rls_db, result);
if (doc != NULL)
xmlFreeDoc(doc);
if (dbmode == RLS_DB_ONLY && rls_dbf.abort_transaction)
{
if (rls_dbf.abort_transaction(rls_db) < 0)
LM_ERR("in abort_transaction\n");
}
}
int rls_handle_subscribe(struct sip_msg* msg, str watcher_user, str watcher_domain)
{
subs_t subs;
pres_ev_t* event = NULL;
int err_ret = -1;
int ret = to_presence_code;
str* contact = NULL;
xmlDocPtr doc = NULL;
xmlNodePtr service_node = NULL;
unsigned int hash_code=0;
int to_tag_gen = 0;
event_t* parsed_event;
param_t* ev_param = NULL;
str reason;
int rt;
str rlsubs_did = {0, 0};
memset(&subs, 0, sizeof(subs_t));
/** sanity checks - parse all headers */
if (parse_headers(msg, HDR_EOH_F, 0)<-1)
{
LM_ERR("failed parsing all headers\n");
if (slb.freply(msg, 400, &pu_400_rpl) < 0)
{
LM_ERR("while sending 400 reply\n");
return -1;
}
return 0;
}
/* check for To and From headesr */
if(parse_to_uri(msg)<0 || parse_from_uri(msg)<0)
{
LM_ERR("failed to find To or From headers\n");
if (slb.freply(msg, 400, &pu_400_rpl) < 0)
{
LM_ERR("while sending 400 reply\n");
return -1;
}
return 0;
}
if(get_from(msg)->tag_value.s ==NULL || get_from(msg)->tag_value.len==0)
{
LM_ERR("no from tag value present\n");
return -1;
}
if(msg->callid==NULL || msg->callid->body.s==NULL)
{
LM_ERR("cannot find callid header\n");
return -1;
}
if(parse_sip_msg_uri(msg)<0)
{
LM_ERR("failed parsing Request URI\n");
return -1;
}
/* check for header 'Support: eventlist' */
if(msg->supported==NULL)
{
LM_DBG("supported header not found - not for rls\n");
goto forpresence;
}
if(parse_supported(msg)<0)
{
LM_ERR("failed to parse supported headers\n");
return -1;
}
if(!(get_supported(msg) & F_SUPPORTED_EVENTLIST))
{
LM_DBG("No support for 'eventlist' - not for rls\n");
goto forpresence;
}
/* inspecting the Event header field */
if(msg->event && msg->event->body.len > 0)
{
if (!msg->event->parsed && (parse_event(msg->event) < 0))
{
LM_ERR("cannot parse Event header\n");
goto error;
}
if(! ( ((event_t*)msg->event->parsed)->type & rls_events) )
{
goto forpresence;
}
} else {
goto bad_event;
}
/* search event in the list */
parsed_event = (event_t*)msg->event->parsed;
event = pres_search_event(parsed_event);
if(event==NULL)
{
goto bad_event;
}
subs.event= event;
/* extract the id if any*/
ev_param= parsed_event->params.list;
while(ev_param)
{
if(ev_param->name.len==2 && strncmp(ev_param->name.s, "id", 2)==0)
{
subs.event_id = ev_param->body;
break;
}
ev_param= ev_param->next;
}
/* extract dialog information from message headers */
if(pres_extract_sdialog_info(&subs, msg, rls_max_expires,
&to_tag_gen, rls_server_address,
watcher_user, watcher_domain)<0)
{
LM_ERR("bad subscribe request\n");
goto error;
}
hash_code = core_hash(&subs.callid, &subs.to_tag, hash_size);
if (CONSTR_RLSUBS_DID(&subs, &rlsubs_did) < 0)
{
LM_ERR("cannot build rls subs did\n");
goto error;
}
subs.updated = core_hash(&rlsubs_did, NULL, 0) %
(waitn_time * rls_notifier_poll_rate * rls_notifier_processes);
if(get_to(msg)->tag_value.s==NULL || get_to(msg)->tag_value.len==0)
{ /* initial Subscribe */
/*verify if Request URI represents a list by asking xcap server*/
if(uandd_to_uri(msg->parsed_uri.user, msg->parsed_uri.host,
&subs.pres_uri)<0)
{
LM_ERR("while constructing uri from user and domain\n");
goto error;
}
if(rls_get_service_list(&subs.pres_uri, &subs.watcher_user,
&subs.watcher_domain, &service_node, &doc)<0)
{
LM_ERR("while attepmting to get a resource list\n");
goto error;
}
if(doc==NULL)
{
/* if not for RLS, pass it to presence serivce */
LM_DBG("list not found - searched for uri <%.*s>\n",
subs.pres_uri.len, subs.pres_uri.s);
goto forpresence;
}
/* if correct reply with 200 OK */
if(reply_200(msg, &subs.local_contact, subs.expires)<0)
goto error;
subs.local_cseq = 0;
if(subs.expires != 0)
{
subs.version = 1;
if (dbmode==RLS_DB_ONLY)
{
rt=insert_rlsdb( &subs );
}
else
{
rt=pres_insert_shtable(rls_table, hash_code, &subs);
}
if (rt<0)
{
LM_ERR("while adding new subscription\n");
goto error;
}
}
} else {
/* search if a stored dialog */
if ( dbmode == RLS_DB_ONLY )
{
if (rls_dbf.start_transaction)
{
if (rls_dbf.start_transaction(rls_db, DB_LOCKING_WRITE) < 0)
{
LM_ERR("in start_transaction\n");
goto error;
}
}
rt = get_dialog_subscribe_rlsdb(&subs);
if (rt <= 0)
{
LM_DBG("subscription dialog not found for <%.*s@%.*s>\n",
subs.watcher_user.len, subs.watcher_user.s,
subs.watcher_domain.len, subs.watcher_domain.s);
if (rls_dbf.end_transaction)
{
if (rls_dbf.end_transaction(rls_db) < 0)
{
LM_ERR("in end_transaction\n");
goto error;
}
}
goto forpresence;
}
else if(rt>=400)
{
reason = (rt==400)?pu_400_rpl:stale_cseq_rpl;
if (slb.freply(msg, 400, &reason) < 0)
{
LM_ERR("while sending reply\n");
goto error;
}
if (rls_dbf.end_transaction)
{
if (rls_dbf.end_transaction(rls_db) < 0)
{
LM_ERR("in end_transaction\n");
goto error;
}
}
ret = 0;
goto stop;
}
/* if correct reply with 200 OK */
if(reply_200(msg, &subs.local_contact, subs.expires)<0)
goto error;
if (update_dialog_subscribe_rlsdb(&subs) < 0)
{
LM_ERR("while updating resource list subscription\n");
goto error;
}
if (rls_dbf.end_transaction)
{
if (rls_dbf.end_transaction(rls_db) < 0)
{
LM_ERR("in end_transaction\n");
goto error;
}
}
}
else
{
lock_get(&rls_table[hash_code].lock);
if(pres_search_shtable(rls_table, subs.callid,
subs.to_tag, subs.from_tag, hash_code)==NULL)
{
lock_release(&rls_table[hash_code].lock);
LM_DBG("subscription dialog not found for <%.*s@%.*s>\n",
subs.watcher_user.len, subs.watcher_user.s,
subs.watcher_domain.len, subs.watcher_domain.s);
goto forpresence;
}
lock_release(&rls_table[hash_code].lock);
/* if correct reply with 200 OK */
if(reply_200(msg, &subs.local_contact, subs.expires)<0)
goto error;
rt = update_rlsubs(&subs, hash_code);
if(rt<0)
{
LM_ERR("while updating resource list subscription\n");
goto error;
}
if(rt>=400)
{
reason = (rt==400)?pu_400_rpl:stale_cseq_rpl;
if (slb.freply(msg, 400, &reason) < 0)
{
LM_ERR("while sending reply\n");
goto error;
}
ret = 0;
goto stop;
}
}
if(rls_get_service_list(&subs.pres_uri, &subs.watcher_user,
&subs.watcher_domain, &service_node, &doc)<0)
{
LM_ERR("failed getting resource list\n");
goto error;
}
if(doc==NULL)
{
/* warning: no document returned?!?! */
LM_WARN("no document returned for uri <%.*s>\n",
subs.pres_uri.len, subs.pres_uri.s);
goto done;
}
}
if (dbmode != RLS_DB_ONLY)
{
/* sending notify with full state */
if(send_full_notify(&subs, service_node, &subs.pres_uri, hash_code)<0)
{
LM_ERR("failed sending full state notify\n");
goto error;
}
}
/* send subscribe requests for all in the list */
if(resource_subscriptions(&subs, service_node)< 0)
{
LM_ERR("failed sending subscribe requests to resources in list\n");
goto error;
}
if (dbmode !=RLS_DB_ONLY)
remove_expired_rlsubs(&subs, hash_code);
done:
ret = 1;
stop:
forpresence:
if(contact!=NULL)
{
if(contact->s!=NULL)
pkg_free(contact->s);
pkg_free(contact);
}
if(subs.pres_uri.s!=NULL)
pkg_free(subs.pres_uri.s);
if(subs.record_route.s!=NULL)
pkg_free(subs.record_route.s);
if(doc!=NULL)
xmlFreeDoc(doc);
if (rlsubs_did.s != NULL)
pkg_free(rlsubs_did.s);
return ret;
bad_event:
err_ret = 0;
if(reply_489(msg)<0)
{
LM_ERR("failed sending 489 reply\n");
err_ret = -1;
}
error:
LM_ERR("occured in rls_handle_subscribe\n");
if(contact!=NULL)
{
if(contact->s!=NULL)
pkg_free(contact->s);
pkg_free(contact);
}
if(subs.pres_uri.s!=NULL)
pkg_free(subs.pres_uri.s);
if(subs.record_route.s!=NULL)
pkg_free(subs.record_route.s);
if(doc!=NULL)
xmlFreeDoc(doc);
if (rlsubs_did.s != NULL)
pkg_free(rlsubs_did.s);
if (rls_dbf.abort_transaction)
{
if (rls_dbf.abort_transaction(rls_db) < 0)
LM_ERR("in abort_transaction\n");
}
return err_ret;
}
