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asterisk/res/res_pjsip_registrar.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2013, Digium, Inc.
*
* Joshua Colp <jcolp@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*** MODULEINFO
<depend>pjproject</depend>
<depend>res_pjproject</depend>
<depend>res_pjsip</depend>
<support_level>core</support_level>
***/
#include "asterisk.h"
#include <signal.h>
#include <pjsip.h>
#include <pjsip_ua.h>
#include "asterisk/res_pjsip.h"
#include "asterisk/module.h"
#include "asterisk/paths.h"
#include "asterisk/test.h"
#include "asterisk/taskprocessor.h"
#include "asterisk/manager.h"
#include "asterisk/named_locks.h"
#include "asterisk/res_pjproject.h"
#include "res_pjsip/include/res_pjsip_private.h"
/*** DOCUMENTATION
<manager name="PJSIPShowRegistrationsInbound" language="en_US">
<synopsis>
Lists PJSIP inbound registrations.
</synopsis>
<syntax />
<description>
<para>
In response, <literal>InboundRegistrationDetail</literal> events showing configuration
and status information are raised for all contacts, static or dynamic. Once all events
are completed an <literal>InboundRegistrationDetailComplete</literal> is issued.
</para>
<warning><para>
This command just dumps all coonfigured AORs with contacts, even if the contact
is a permanent one. To really get just inbound registrations, use
<literal>PJSIPShowRegistrationInboundContactStatuses</literal>.
</para>
</warning>
</description>
<see-also>
<ref type="manager" module="res_pjsip_registrar">PJSIPShowRegistrationInboundContactStatuses</ref>
</see-also>
</manager>
<manager name="PJSIPShowRegistrationInboundContactStatuses" language="en_US">
<synopsis>
Lists ContactStatuses for PJSIP inbound registrations.
</synopsis>
<syntax />
<description>
<para>
In response, <literal>ContactStatusDetail</literal> events showing status information
are raised for each inbound registration (dynamic contact) object. Once all events
are completed a <literal>ContactStatusDetailComplete</literal> event is issued.
</para>
</description>
</manager>
***/
static int pj_max_hostname = PJ_MAX_HOSTNAME;
static int pjsip_max_url_size = PJSIP_MAX_URL_SIZE;
/*! \brief Internal function which returns the expiration time for a contact */
static unsigned int registrar_get_expiration(const struct ast_sip_aor *aor, const pjsip_contact_hdr *contact, const pjsip_rx_data *rdata)
{
pjsip_expires_hdr *expires;
unsigned int expiration = aor->default_expiration;
if (contact && contact->expires != PJSIP_EXPIRES_NOT_SPECIFIED) {
/* Expiration was provided with the contact itself */
expiration = contact->expires;
} else if ((expires = pjsip_msg_find_hdr(rdata->msg_info.msg, PJSIP_H_EXPIRES, NULL))) {
/* Expiration was provided using the Expires header */
expiration = expires->ivalue;
}
/* If the value has explicitly been set to 0, do not enforce */
if (!expiration) {
return expiration;
}
/* Enforce the range that we will allow for expiration */
if (expiration < aor->minimum_expiration) {
expiration = aor->minimum_expiration;
} else if (expiration > aor->maximum_expiration) {
expiration = aor->maximum_expiration;
}
return expiration;
}
/*! \brief Structure used for finding contact */
struct registrar_contact_details {
/*! \brief Pool used for parsing URI */
pj_pool_t *pool;
/*! \brief URI being looked for */
pjsip_sip_uri *uri;
};
/*! \brief Callback function for finding a contact */
static int registrar_find_contact(void *obj, void *arg, int flags)
{
struct ast_sip_contact *contact = obj;
const struct registrar_contact_details *details = arg;
pjsip_uri *contact_uri;
if (ast_tvzero(contact->expiration_time)) {
return 0;
}
contact_uri = pjsip_parse_uri(details->pool, (char*)contact->uri, strlen(contact->uri), 0);
if (!contact_uri) {
ast_log(LOG_WARNING, "Unable to parse contact URI from '%s'.\n", contact->uri);
return 0;
}
return (pjsip_uri_cmp(PJSIP_URI_IN_CONTACT_HDR, details->uri, contact_uri) == PJ_SUCCESS) ? CMP_MATCH : 0;
}
/*! \brief Internal function which validates provided Contact headers to confirm that they are acceptable, and returns number of contacts */
static int registrar_validate_contacts(const pjsip_rx_data *rdata, pj_pool_t *pool, struct ao2_container *contacts,
struct ast_sip_aor *aor, int permanent, int *added, int *updated, int *deleted)
{
pjsip_contact_hdr *previous = NULL;
pjsip_contact_hdr *contact = (pjsip_contact_hdr *)&rdata->msg_info.msg->hdr;
struct registrar_contact_details details = {
.pool = pool,
};
for (; (contact = (pjsip_contact_hdr *) pjsip_msg_find_hdr(rdata->msg_info.msg, PJSIP_H_CONTACT, contact->next)); pj_pool_reset(pool)) {
unsigned int expiration = registrar_get_expiration(aor, contact, rdata);
struct ast_sip_contact *existing;
char contact_uri[pjsip_max_url_size];
if (contact->star) {
/* The expiration MUST be 0 when a '*' contact is used and there must be no other contact */
if (expiration != 0 || previous) {
return -1;
}
/* Count all contacts to delete */
*deleted = ao2_container_count(contacts) - permanent;
previous = contact;
continue;
} else if (previous && previous->star) {
/* If there is a previous contact and it is a '*' this is a deal breaker */
return -1;
}
previous = contact;
if (!PJSIP_URI_SCHEME_IS_SIP(contact->uri) && !PJSIP_URI_SCHEME_IS_SIPS(contact->uri)) {
continue;
}
details.uri = pjsip_uri_get_uri(contact->uri);
/* pjsip_uri_print returns -1 if there's not enough room in the buffer */
if (pjsip_uri_print(PJSIP_URI_IN_CONTACT_HDR, details.uri, contact_uri, sizeof(contact_uri)) < 0) {
/* If the total length of the uri is greater than pjproject can handle, go no further */
return -1;
}
if (details.uri->host.slen >= pj_max_hostname) {
/* If the length of the hostname is greater than pjproject can handle, go no further */
return -1;
}
/* Determine if this is an add, update, or delete for policy enforcement purposes */
existing = ao2_callback(contacts, 0, registrar_find_contact, &details);
ao2_cleanup(existing);
if (!existing) {
if (expiration) {
++*added;
}
} else if (expiration) {
++*updated;
} else {
++*deleted;
}
}
return 0;
}
enum contact_delete_type {
CONTACT_DELETE_ERROR,
CONTACT_DELETE_EXISTING,
CONTACT_DELETE_UNAVAILABLE,
CONTACT_DELETE_EXPIRE,
CONTACT_DELETE_REQUEST,
CONTACT_DELETE_SHUTDOWN,
};
static int registrar_contact_delete(enum contact_delete_type type, pjsip_transport *transport,
struct ast_sip_contact *contact, const char *aor_name);
/*! \brief Internal function used to delete a contact from an AOR */
static int registrar_delete_contact(void *obj, void *arg, int flags)
{
return registrar_contact_delete(
CONTACT_DELETE_REQUEST, NULL, obj, arg) ? 0 : CMP_MATCH;
}
/*! \brief Internal function which adds a contact to a response */
static int registrar_add_contact(void *obj, void *arg, int flags)
{
struct ast_sip_contact *contact = obj;
pjsip_tx_data *tdata = arg;
pj_str_t uri;
pjsip_uri *parsed;
pj_strdup2_with_null(tdata->pool, &uri, contact->uri);
parsed = pjsip_parse_uri(tdata->pool, uri.ptr, uri.slen, PJSIP_PARSE_URI_AS_NAMEADDR);
if (parsed && (PJSIP_URI_SCHEME_IS_SIP(parsed) || PJSIP_URI_SCHEME_IS_SIPS(parsed))) {
pjsip_contact_hdr *hdr = pjsip_contact_hdr_create(tdata->pool);
hdr->uri = parsed;
if (!ast_tvzero(contact->expiration_time)) {
hdr->expires = ast_tvdiff_ms(contact->expiration_time, ast_tvnow()) / 1000;
} else {
hdr->expires = PJSIP_EXPIRES_NOT_SPECIFIED;
}
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *) hdr);
} else {
ast_log(LOG_WARNING, "Skipping invalid Contact URI \"%.*s\" for AOR %s\n",
(int) uri.slen, uri.ptr, contact->aor);
}
return 0;
}
static const pj_str_t path_hdr_name = { "Path", 4 };
static int build_path_data(pjsip_rx_data *rdata, struct ast_str **path_str)
{
pjsip_generic_string_hdr *path_hdr = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &path_hdr_name, NULL);
if (!path_hdr) {
return 0;
}
*path_str = ast_str_create(64);
if (!*path_str) {
return -1;
}
ast_str_set(path_str, 0, "%.*s", (int)path_hdr->hvalue.slen, path_hdr->hvalue.ptr);
while ((path_hdr = (pjsip_generic_string_hdr *) pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &path_hdr_name, path_hdr->next))) {
ast_str_append(path_str, 0, ",%.*s", (int)path_hdr->hvalue.slen, path_hdr->hvalue.ptr);
}
return 0;
}
static int registrar_validate_path(pjsip_rx_data *rdata, struct ast_sip_aor *aor, struct ast_str **path_str)
{
const pj_str_t path_supported_name = { "path", 4 };
pjsip_supported_hdr *supported_hdr;
int i;
if (!aor->support_path) {
return 0;
}
if (build_path_data(rdata, path_str)) {
return -1;
}
if (!*path_str) {
return 0;
}
supported_hdr = pjsip_msg_find_hdr(rdata->msg_info.msg, PJSIP_H_SUPPORTED, NULL);
if (!supported_hdr) {
return -1;
}
/* Find advertised path support */
for (i = 0; i < supported_hdr->count; i++) {
if (!pj_stricmp(&supported_hdr->values[i], &path_supported_name)) {
return 0;
}
}
/* Path header present, but support not advertised */
return -1;
}
/*! Transport monitor for incoming REGISTER contacts */
struct contact_transport_monitor {
/*!
* \brief Sorcery contact name to remove on transport shutdown
* \note Stored after aor_name in space reserved when struct allocated.
*/
char *contact_name;
/*! Indicates that the monitor is in the process of removing a contact */
int removing;
/*! AOR name the contact is associated */
char aor_name[0];
};
static int contact_transport_monitor_matcher(void *a, void *b)
{
struct contact_transport_monitor *ma = a;
struct contact_transport_monitor *mb = b;
return strcmp(ma->aor_name, mb->aor_name) == 0
&& strcmp(ma->contact_name, mb->contact_name) == 0;
}
static int register_contact_transport_remove_cb(void *data)
{
struct contact_transport_monitor *monitor = data;
struct ast_sip_contact *contact;
struct ast_sip_aor *aor;
aor = ast_sip_location_retrieve_aor(monitor->aor_name);
if (!aor) {
ao2_lock(monitor);
monitor->removing = 0;
ao2_unlock(monitor);
ao2_ref(monitor, -1);
return 0;
}
ao2_lock(aor);
contact = ast_sip_location_retrieve_contact(monitor->contact_name);
if (contact) {
registrar_contact_delete(CONTACT_DELETE_SHUTDOWN, NULL, contact, monitor->aor_name);
ao2_ref(contact, -1);
}
ao2_unlock(aor);
ao2_ref(aor, -1);
ao2_ref(monitor, -1);
return 0;
}
/*!
* \internal
* \brief The reliable transport we registered as a contact has shutdown.
*
* \param data What contact needs to be removed.
*
* \note Normally executed by the pjsip monitor thread.
*/
static void register_contact_transport_shutdown_cb(void *data)
{
struct contact_transport_monitor *monitor = data;
/*
* It's possible for this shutdown handler to get called multiple times for the
* same monitor from different threads. Only one of the calls needs to do the
* actual removing of the contact, so if one is currently removing then any
* subsequent calls can skip.
*/
ao2_lock(monitor);
if (monitor->removing) {
ao2_unlock(monitor);
return;
}
monitor->removing = 1;
/*
* Push off to a default serializer. This is in case sorcery
* does database accesses for contacts. Database accesses may
* not be on this machine. We don't want to tie up the pjsip
* monitor thread with potentially long access times.
*/
ao2_ref(monitor, +1);
if (ast_sip_push_task(NULL, register_contact_transport_remove_cb, monitor)) {
monitor->removing = 0;
ao2_ref(monitor, -1);
}
ao2_unlock(monitor);
}
static int registrar_contact_delete(enum contact_delete_type type, pjsip_transport *transport,
struct ast_sip_contact *contact, const char *aor_name)
{
int aor_size;
/* Permanent contacts can't be deleted */
if (ast_tvzero(contact->expiration_time)) {
return -1;
}
aor_size = aor_name ? strlen(aor_name) : 0;
if (contact->prune_on_boot && type != CONTACT_DELETE_SHUTDOWN && aor_size) {
const char *contact_name = ast_sorcery_object_get_id(contact);
size_t contact_name_len = strlen(contact_name) + 1;
struct contact_transport_monitor *monitor = ast_alloca(
sizeof(*monitor) + 1 + aor_size + contact_name_len);
strcpy(monitor->aor_name, aor_name); /* Safe */
monitor->contact_name = monitor->aor_name + aor_size + 1;
ast_copy_string(monitor->contact_name, contact_name, contact_name_len); /* Safe */
if (transport) {
ast_sip_transport_monitor_unregister(transport,
register_contact_transport_shutdown_cb, monitor,
contact_transport_monitor_matcher);
} else {
/*
* If a specific transport is not supplied then unregister the matching
* monitor from all reliable transports.
*/
ast_sip_transport_monitor_unregister_all(register_contact_transport_shutdown_cb,
monitor, contact_transport_monitor_matcher);
}
}
ast_sip_location_delete_contact(contact);
if (aor_size) {
if (VERBOSITY_ATLEAST(3)) {
const char *reason = "none";
switch (type) {
case CONTACT_DELETE_ERROR:
reason = "registration failure";
break;
case CONTACT_DELETE_EXISTING:
reason = "remove existing";
break;
case CONTACT_DELETE_UNAVAILABLE:
reason = "remove unavailable";
break;
case CONTACT_DELETE_EXPIRE:
reason = "expiration";
break;
case CONTACT_DELETE_REQUEST:
reason = "request";
break;
case CONTACT_DELETE_SHUTDOWN:
reason = "shutdown";
break;
}
ast_verb(3, "Removed contact '%s' from AOR '%s' due to %s\n",
contact->uri, aor_name, reason);
}
ast_test_suite_event_notify("AOR_CONTACT_REMOVED",
"Contact: %s\r\n"
"AOR: %s\r\n"
"UserAgent: %s",
contact->uri,
aor_name,
contact->user_agent);
}
return 0;
}
AST_VECTOR(excess_contact_vector, struct ast_sip_contact *);
static int vec_contact_cmp(struct ast_sip_contact *left, struct ast_sip_contact *right)
{
struct ast_sip_contact *left_contact = left;
struct ast_sip_contact *right_contact = right;
/* Sort from soonest to expire to last to expire */
int time_sorted = ast_tvcmp(left_contact->expiration_time, right_contact->expiration_time);
struct ast_sip_aor *aor = ast_sip_location_retrieve_aor(left_contact->aor);
struct ast_sip_contact_status *left_status;
struct ast_sip_contact_status *right_status;
int remove_unavailable = 0;
int left_unreachable;
int right_unreachable;
if (aor) {
remove_unavailable = aor->remove_unavailable;
ao2_ref(aor, -1);
}
if (!remove_unavailable) {
return time_sorted;
}
/* Get contact status if available */
left_status = ast_sip_get_contact_status(left_contact);
if (!left_status) {
return time_sorted;
}
right_status = ast_sip_get_contact_status(right_contact);
if (!right_status) {
ao2_ref(left_status, -1);
return time_sorted;
}
left_unreachable = (left_status->status == UNAVAILABLE);
right_unreachable = (right_status->status == UNAVAILABLE);
ao2_ref(left_status, -1);
ao2_ref(right_status, -1);
if (left_unreachable != right_unreachable) {
/* Set unavailable contact to top of vector */
if (left_unreachable) return -1;
if (right_unreachable) return 1;
}
/* Either both available or both unavailable */
return time_sorted;
}
static int vec_contact_add(void *obj, void *arg, int flags)
{
struct ast_sip_contact *contact = obj;
struct excess_contact_vector *contact_vec = arg;
/*
* Performance wise, an insertion sort is fine because we
* shouldn't need to remove more than a handful of contacts.
* I expect we'll typically be removing only one contact.
*/
AST_VECTOR_ADD_SORTED(contact_vec, contact, vec_contact_cmp);
if (AST_VECTOR_SIZE(contact_vec) == AST_VECTOR_MAX_SIZE(contact_vec)) {
/*
* We added a contact over the number we need to remove.
* Remove the longest to expire contact from the vector
* which is the last element in the vector. It may be
* the one we just added or the one we just added pushed
* out an earlier contact from removal consideration.
*/
--AST_VECTOR_SIZE(contact_vec);
}
return 0;
}
/*!
* \internal
* \brief Remove excess existing contacts that are unavailable or expire soonest.
* \since 13.18.0
*
* \param contacts Container of unmodified contacts that could remove.
* \param to_remove Maximum number of contacts to remove.
* \param response_contacts, remove_existing
*/
static void remove_excess_contacts(struct ao2_container *contacts, struct ao2_container *response_contacts,
unsigned int to_remove, unsigned int remove_existing)
{
struct excess_contact_vector contact_vec;
/*
* Create a sorted vector to hold the to_remove soonest to
* expire contacts. The vector has an extra space to
* temporarily hold the longest to expire contact that we
* won't remove.
*/
if (AST_VECTOR_INIT(&contact_vec, to_remove + 1)) {
return;
}
ao2_callback(contacts, OBJ_NODATA | OBJ_MULTIPLE, vec_contact_add, &contact_vec);
/*
* The vector should always be populated with the number
* of contacts we need to remove. Just in case, we will
* remove all contacts in the vector even if the contacts
* container had fewer contacts than there should be.
*/
ast_assert(AST_VECTOR_SIZE(&contact_vec) == to_remove);
to_remove = AST_VECTOR_SIZE(&contact_vec);
/* Remove the excess contacts that are unavailable or expire the soonest */
while (to_remove--) {
struct ast_sip_contact *contact;
contact = AST_VECTOR_GET(&contact_vec, to_remove);
if (!remove_existing) {
registrar_contact_delete(CONTACT_DELETE_UNAVAILABLE, NULL, contact, contact->aor);
} else {
registrar_contact_delete(CONTACT_DELETE_EXISTING, NULL, contact, contact->aor);
}
ao2_unlink(response_contacts, contact);
}
AST_VECTOR_FREE(&contact_vec);
}
/*! \brief Callback function which adds non-permanent contacts to a container */
static int registrar_add_non_permanent(void *obj, void *arg, int flags)
{
struct ast_sip_contact *contact = obj;
struct ao2_container *container = arg;
if (ast_tvzero(contact->expiration_time)) {
return 0;
}
ao2_link(container, contact);
return 0;
}
/*! \brief Internal callback function which adds any contact which is unreachable */
static int registrar_add_unreachable(void *obj, void *arg, int flags)
{
struct ast_sip_contact *contact = obj;
struct ao2_container *container = arg;
struct ast_sip_contact_status *status;
int unreachable;
status = ast_sip_get_contact_status(contact);
if (!status) {
return 0;
}
unreachable = (status->status == UNAVAILABLE);
ao2_ref(status, -1);
if (unreachable) {
ao2_link(container, contact);
}
return 0;
}
struct aor_core_response {
/*! Tx data to use for statefull response. NULL for stateless response. */
pjsip_tx_data *tdata;
/*! SIP response code to send in stateless response */
int code;
};
static void register_aor_core(pjsip_rx_data *rdata,
struct ast_sip_endpoint *endpoint,
struct ast_sip_aor *aor,
const char *aor_name,
struct ao2_container *contacts,
struct aor_core_response *response)
{
static const pj_str_t USER_AGENT = { "User-Agent", 10 };
int added = 0;
int updated = 0;
int deleted = 0;
int permanent = 0;
int contact_count;
struct ao2_container *existing_contacts = NULL;
struct ao2_container *unavail_contacts = NULL;
pjsip_contact_hdr *contact_hdr = (pjsip_contact_hdr *)&rdata->msg_info.msg->hdr;
struct registrar_contact_details details = { 0, };
pjsip_tx_data *tdata;
RAII_VAR(struct ast_str *, path_str, NULL, ast_free);
struct ast_sip_contact *response_contact;
char *user_agent = NULL;
pjsip_user_agent_hdr *user_agent_hdr;
pjsip_expires_hdr *expires_hdr;
pjsip_via_hdr *via_hdr;
pjsip_via_hdr *via_hdr_last;
char *via_addr = NULL;
int via_port = 0;
pjsip_cid_hdr *call_id_hdr;
char *call_id = NULL;
size_t alloc_size;
/* We create a single pool and use it throughout this function where we need one */
details.pool = pjsip_endpt_create_pool(ast_sip_get_pjsip_endpoint(),
"Contact Comparison", 1024, 256);
if (!details.pool) {
response->code = 500;
return;
}
/* If there are any permanent contacts configured on the AOR we need to take them
* into account when counting contacts.
*/
if (aor->permanent_contacts) {
permanent = ao2_container_count(aor->permanent_contacts);
}
if (registrar_validate_contacts(rdata, details.pool, contacts, aor, permanent, &added, &updated, &deleted)) {
/* The provided Contact headers do not conform to the specification */
ast_sip_report_failed_acl(endpoint, rdata, "registrar_invalid_contacts_provided");
ast_log(LOG_WARNING, "Failed to validate contacts in REGISTER request from '%s'\n",
ast_sorcery_object_get_id(endpoint));
response->code = 400;
pjsip_endpt_release_pool(ast_sip_get_pjsip_endpoint(), details.pool);
return;
}
if (registrar_validate_path(rdata, aor, &path_str)) {
/* Ensure that intervening proxies did not make invalid modifications to the request */
ast_log(LOG_WARNING, "Invalid modifications made to REGISTER request from '%s' by intervening proxy\n",
ast_sorcery_object_get_id(endpoint));
response->code = 420;
pjsip_endpt_release_pool(ast_sip_get_pjsip_endpoint(), details.pool);
return;
}
if (aor->remove_existing) {
/* Cumulative number of contacts affected by this registration */
contact_count = MAX(updated + added - deleted, 0);
/* We need to keep track of only existing contacts so we can later
* remove them if need be.
*/
existing_contacts = ao2_container_alloc_list(AO2_ALLOC_OPT_LOCK_NOLOCK, 0,
NULL, ast_sorcery_object_id_compare);
if (!existing_contacts) {
response->code = 500;
pjsip_endpt_release_pool(ast_sip_get_pjsip_endpoint(), details.pool);
return;
}
ao2_callback(contacts, OBJ_NODATA, registrar_add_non_permanent, existing_contacts);
} else {
/* Total contacts after this registration */
contact_count = ao2_container_count(contacts) - permanent + added - deleted;
}
if (contact_count > aor->max_contacts && aor->remove_unavailable) {
/* Get unavailable contact total */
int unavail_count = 0;
unavail_contacts = ao2_container_alloc_list(AO2_ALLOC_OPT_LOCK_NOLOCK, 0,
NULL, ast_sorcery_object_id_compare);
if (!unavail_contacts) {
response->code = 500;
pjsip_endpt_release_pool(ast_sip_get_pjsip_endpoint(), details.pool);
return;
}
ao2_callback(contacts, OBJ_NODATA, registrar_add_unreachable, unavail_contacts);
if (unavail_contacts) {
unavail_count = ao2_container_count(unavail_contacts);
}
/* Check to see if removing unavailable contacts will help */
if (contact_count - unavail_count <= aor->max_contacts) {
/* Remove any unavailable contacts */
remove_excess_contacts(unavail_contacts, contacts, contact_count - aor->max_contacts, aor->remove_existing);
ao2_cleanup(unavail_contacts);
/* We're only here if !aor->remove_existing so this count is correct */
contact_count = ao2_container_count(contacts) - permanent + added - deleted;
}
}
if (contact_count > aor->max_contacts) {
/* Enforce the maximum number of contacts */
ast_sip_report_failed_acl(endpoint, rdata, "registrar_attempt_exceeds_maximum_configured_contacts");
ast_log(LOG_WARNING, "Registration attempt from endpoint '%s' (%s:%d) to AOR '%s' will exceed max contacts of %u\n",
ast_sorcery_object_get_id(endpoint), rdata->pkt_info.src_name, rdata->pkt_info.src_port,
aor_name, aor->max_contacts);
response->code = 403;
pjsip_endpt_release_pool(ast_sip_get_pjsip_endpoint(), details.pool);
ao2_cleanup(existing_contacts);
return;
}
user_agent_hdr = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &USER_AGENT, NULL);
if (user_agent_hdr) {
alloc_size = pj_strlen(&user_agent_hdr->hvalue) + 1;
user_agent = ast_alloca(alloc_size);
ast_copy_pj_str(user_agent, &user_agent_hdr->hvalue, alloc_size);
}
/* Find the first Via header */
via_hdr = via_hdr_last = (pjsip_via_hdr*) pjsip_msg_find_hdr(rdata->msg_info.msg, PJSIP_H_VIA, NULL);
if (via_hdr) {
/* Find the last Via header */
while ( (via_hdr = (pjsip_via_hdr*) pjsip_msg_find_hdr(rdata->msg_info.msg,
PJSIP_H_VIA, via_hdr->next)) != NULL) {
via_hdr_last = via_hdr;
}
alloc_size = pj_strlen(&via_hdr_last->sent_by.host) + 1;
via_addr = ast_alloca(alloc_size);
ast_copy_pj_str(via_addr, &via_hdr_last->sent_by.host, alloc_size);
via_port=via_hdr_last->sent_by.port;
}
call_id_hdr = (pjsip_cid_hdr*) pjsip_msg_find_hdr(rdata->msg_info.msg, PJSIP_H_CALL_ID, NULL);
if (call_id_hdr) {
alloc_size = pj_strlen(&call_id_hdr->id) + 1;
call_id = ast_alloca(alloc_size);
ast_copy_pj_str(call_id, &call_id_hdr->id, alloc_size);
}
/* Iterate each provided Contact header and add, update, or delete */
for (; (contact_hdr = (pjsip_contact_hdr *) pjsip_msg_find_hdr(rdata->msg_info.msg, PJSIP_H_CONTACT, contact_hdr->next)); pj_pool_reset(details.pool)) {
int expiration;
char contact_uri[pjsip_max_url_size];
RAII_VAR(struct ast_sip_contact *, contact, NULL, ao2_cleanup);
if (contact_hdr->star) {
/* A star means to unregister everything, so do so for the possible contacts */
ao2_callback(contacts, OBJ_NODATA | OBJ_UNLINK | OBJ_MULTIPLE,
registrar_delete_contact, (void *)aor_name);
/* If we are keeping track of existing contacts for removal then, well, there is
* absolutely nothing left so no need to try to remove any.
*/
if (existing_contacts) {
ao2_ref(existing_contacts, -1);
existing_contacts = NULL;
}
break;
}
if (!PJSIP_URI_SCHEME_IS_SIP(contact_hdr->uri) && !PJSIP_URI_SCHEME_IS_SIPS(contact_hdr->uri)) {
/* This registrar only currently supports sip: and sips: URI schemes */
continue;
}
expiration = registrar_get_expiration(aor, contact_hdr, rdata);
details.uri = pjsip_uri_get_uri(contact_hdr->uri);
pjsip_uri_print(PJSIP_URI_IN_CONTACT_HDR, details.uri, contact_uri, sizeof(contact_uri));
contact = ao2_callback(contacts, OBJ_UNLINK, registrar_find_contact, &details);
/* If a contact was returned and we need to keep track of existing contacts then it
* should be removed.
*/
if (contact && existing_contacts) {
ao2_unlink(existing_contacts, contact);
}
if (!contact) {
int prune_on_boot;
/* If they are actually trying to delete a contact that does not exist... be forgiving */
if (!expiration) {
ast_verb(3, "Attempted to remove non-existent contact '%s' from AOR '%s' by request\n",
contact_uri, aor_name);
continue;
}
prune_on_boot = !ast_sip_will_uri_survive_restart(details.uri, endpoint, rdata);
contact = ast_sip_location_create_contact(aor, contact_uri,
ast_tvadd(ast_tvnow(), ast_samp2tv(expiration, 1)),
path_str ? ast_str_buffer(path_str) : NULL,
user_agent, via_addr, via_port, call_id, prune_on_boot, endpoint);
if (!contact) {
ast_log(LOG_ERROR, "Unable to bind contact '%s' to AOR '%s'\n",
contact_uri, aor_name);
continue;
}
if (prune_on_boot) {
size_t contact_name_len;
const char *contact_name;
struct contact_transport_monitor *monitor;
/*
* Monitor the transport in case it gets disconnected because
* the contact won't be valid anymore if that happens.
*/
contact_name = ast_sorcery_object_get_id(contact);
contact_name_len = strlen(contact_name) + 1;
monitor = ao2_alloc(sizeof(*monitor) + 1 + strlen(aor_name)
+ contact_name_len, NULL);
if (monitor) {
strcpy(monitor->aor_name, aor_name);/* Safe */
monitor->contact_name = monitor->aor_name + strlen(aor_name) + 1;
ast_copy_string(monitor->contact_name, contact_name, contact_name_len);/* Safe */
ast_sip_transport_monitor_register_replace(rdata->tp_info.transport,
register_contact_transport_shutdown_cb, monitor, contact_transport_monitor_matcher);
ao2_ref(monitor, -1);
}
}
ast_verb(3, "Added contact '%s' to AOR '%s' with expiration of %d seconds\n",
contact_uri, aor_name, expiration);
ast_test_suite_event_notify("AOR_CONTACT_ADDED",
"Contact: %s\r\n"
"AOR: %s\r\n"
"Expiration: %d\r\n"
"UserAgent: %s",
contact_uri,
aor_name,
expiration,
user_agent);
ao2_link(contacts, contact);
} else if (expiration) {
struct ast_sip_contact *contact_update;
contact_update = ast_sorcery_copy(ast_sip_get_sorcery(), contact);
if (!contact_update) {
ast_log(LOG_ERROR, "Failed to update contact '%s' expiration time to %d seconds.\n",
contact->uri, expiration);
continue;
}
contact_update->expiration_time = ast_tvadd(ast_tvnow(), ast_samp2tv(expiration, 1));
contact_update->qualify_frequency = aor->qualify_frequency;
contact_update->authenticate_qualify = aor->authenticate_qualify;
if (path_str) {
ast_string_field_set(contact_update, path, ast_str_buffer(path_str));
}
if (user_agent) {
ast_string_field_set(contact_update, user_agent, user_agent);
}
if (!ast_strlen_zero(ast_config_AST_SYSTEM_NAME)) {
ast_string_field_set(contact_update, reg_server, ast_config_AST_SYSTEM_NAME);
}
if (ast_sip_location_update_contact(contact_update)) {
ast_log(LOG_ERROR, "Failed to update contact '%s' expiration time to %d seconds.\n",
contact->uri, expiration);
registrar_contact_delete(CONTACT_DELETE_ERROR, rdata->tp_info.transport,
contact, aor_name);
continue;
}
ast_debug(3, "Refreshed contact '%s' on AOR '%s' with new expiration of %d seconds\n",
contact_uri, aor_name, expiration);
ast_test_suite_event_notify("AOR_CONTACT_REFRESHED",
"Contact: %s\r\n"
"AOR: %s\r\n"
"Expiration: %d\r\n"
"UserAgent: %s",
contact_uri,
aor_name,
expiration,
contact_update->user_agent);
ao2_link(contacts, contact_update);
ao2_cleanup(contact_update);
} else {
registrar_contact_delete(CONTACT_DELETE_REQUEST, rdata->tp_info.transport,
contact, aor_name);
}
}
pjsip_endpt_release_pool(ast_sip_get_pjsip_endpoint(), details.pool);
/*
* If the AOR is configured to remove any contacts over max_contacts
* that have not been updated/added/deleted as a result of this
* REGISTER do so.
*
* The existing contacts container holds all contacts that were not
* involved in this REGISTER.
* The contacts container holds the current contacts of the AOR.
*/
if (aor->remove_existing && existing_contacts) {
/* Total contacts after this registration */
contact_count = ao2_container_count(existing_contacts) + updated + added;
if (contact_count > aor->max_contacts) {
/* Remove excess existing contacts that are unavailable or expire soonest */
remove_excess_contacts(existing_contacts, contacts, contact_count - aor->max_contacts,
aor->remove_existing);
}
ao2_ref(existing_contacts, -1);
}
response_contact = ao2_callback(contacts, 0, NULL, NULL);
/* Send a response containing all of the contacts (including static) that are present on this AOR */
if (ast_sip_create_response(rdata, 200, response_contact, &tdata) != PJ_SUCCESS) {
ao2_cleanup(response_contact);
ao2_cleanup(contacts);
response->code = 500;
return;
}
ao2_cleanup(response_contact);
/* Add the date header to the response, some UAs use this to set their date and time */
ast_sip_add_date_header(tdata);
ao2_callback(contacts, 0, registrar_add_contact, tdata);
if ((expires_hdr = pjsip_msg_find_hdr(rdata->msg_info.msg, PJSIP_H_EXPIRES, NULL))) {
expires_hdr = pjsip_expires_hdr_create(tdata->pool, registrar_get_expiration(aor, NULL, rdata));
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)expires_hdr);
}
response->tdata = tdata;
}
static int register_aor(pjsip_rx_data *rdata,
struct ast_sip_endpoint *endpoint,
struct ast_sip_aor *aor,
const char *aor_name)
{
struct aor_core_response response = {
.code = 500,
};
struct ao2_container *contacts = NULL;
ao2_lock(aor);
contacts = ast_sip_location_retrieve_aor_contacts_nolock(aor);
if (!contacts) {
ao2_unlock(aor);
pjsip_endpt_respond_stateless(ast_sip_get_pjsip_endpoint(),
rdata, response.code, NULL, NULL, NULL);
return PJ_TRUE;
}
register_aor_core(rdata, endpoint, aor, aor_name, contacts, &response);
ao2_cleanup(contacts);
ao2_unlock(aor);
/* Now send the REGISTER response to the peer */
if (response.tdata) {
ast_sip_send_stateful_response(rdata, response.tdata, endpoint);
} else {
pjsip_endpt_respond_stateless(ast_sip_get_pjsip_endpoint(),
rdata, response.code, NULL, NULL, NULL);
}
return PJ_TRUE;
}
static int match_aor(const char *aor_name, const char *id)
{
if (ast_strlen_zero(aor_name)) {
return 0;
}
if (!strcmp(aor_name, id)) {
ast_debug(3, "Matched id '%s' to aor '%s'\n", id, aor_name);
return 1;
}
return 0;
}
static char *find_aor_name(const pj_str_t *pj_username, const pj_str_t *pj_domain, const char *aors)
{
char *configured_aors;
char *aors_buf;
char *aor_name;
char *id_domain;
char *username, *domain;
struct ast_sip_domain_alias *alias;
/* Turn these into C style strings for convenience */
username = ast_alloca(pj_strlen(pj_username) + 1);
ast_copy_pj_str(username, pj_username, pj_strlen(pj_username) + 1);
domain = ast_alloca(pj_strlen(pj_domain) + 1);
ast_copy_pj_str(domain, pj_domain, pj_strlen(pj_domain) + 1);
id_domain = ast_alloca(strlen(username) + strlen(domain) + 2);
sprintf(id_domain, "%s@%s", username, domain);
aors_buf = ast_strdupa(aors);
/* Look for exact match on username@domain */
configured_aors = aors_buf;
while ((aor_name = ast_strip(strsep(&configured_aors, ",")))) {
if (match_aor(aor_name, id_domain)) {
return ast_strdup(aor_name);
}
}
/* If there's a domain alias, look for exact match on username@domain_alias */
alias = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "domain_alias", domain);
if (alias) {
char *id_domain_alias = ast_alloca(strlen(username) + strlen(alias->domain) + 2);
sprintf(id_domain_alias, "%s@%s", username, alias->domain);
ao2_cleanup(alias);
configured_aors = strcpy(aors_buf, aors);/* Safe */
while ((aor_name = ast_strip(strsep(&configured_aors, ",")))) {
if (match_aor(aor_name, id_domain_alias)) {
return ast_strdup(aor_name);
}
}
}
if (ast_strlen_zero(username)) {
/* No username, no match */
return NULL;
}
/* Look for exact match on username only */
configured_aors = strcpy(aors_buf, aors);/* Safe */
while ((aor_name = ast_strip(strsep(&configured_aors, ",")))) {
if (match_aor(aor_name, username)) {
return ast_strdup(aor_name);
}
}
return NULL;
}
static struct ast_sip_aor *find_registrar_aor(struct pjsip_rx_data *rdata, struct ast_sip_endpoint *endpoint)
{
struct ast_sip_aor *aor = NULL;
char *aor_name = NULL;
int i;
for (i = 0; i < AST_VECTOR_SIZE(&endpoint->ident_method_order); ++i) {
pj_str_t username;
pjsip_sip_uri *uri;
pjsip_authorization_hdr *header = NULL;
switch (AST_VECTOR_GET(&endpoint->ident_method_order, i)) {
case AST_SIP_ENDPOINT_IDENTIFY_BY_USERNAME:
uri = pjsip_uri_get_uri(rdata->msg_info.to->uri);
pj_strassign(&username, &uri->user);
/*
* We may want to match without any user options getting
* in the way.
*
* Logic adapted from AST_SIP_USER_OPTIONS_TRUNCATE_CHECK for pj_str_t.
*/
if (ast_sip_get_ignore_uri_user_options()) {
pj_ssize_t semi = pj_strcspn2(&username, ";");
if (semi < pj_strlen(&username)) {
username.slen = semi;
}
}
aor_name = find_aor_name(&username, &uri->host, endpoint->aors);
if (aor_name) {
ast_debug(3, "Matched aor '%s' by To username\n", aor_name);
}
break;
case AST_SIP_ENDPOINT_IDENTIFY_BY_AUTH_USERNAME:
while ((header = pjsip_msg_find_hdr(rdata->msg_info.msg, PJSIP_H_AUTHORIZATION,
header ? header->next : NULL))) {
if (header && !pj_stricmp2(&header->scheme, "digest")) {
aor_name = find_aor_name(&header->credential.digest.username,
&header->credential.digest.realm, endpoint->aors);
if (aor_name) {
ast_debug(3, "Matched aor '%s' by Authentication username\n", aor_name);
break;
}
}
}
break;
default:
continue;
}
if (aor_name) {
break;
}
}
if (ast_strlen_zero(aor_name) || !(aor = ast_sip_location_retrieve_aor(aor_name))) {
/* The provided AOR name was not found (be it within the configuration or sorcery itself) */
pjsip_endpt_respond_stateless(ast_sip_get_pjsip_endpoint(), rdata, 404, NULL, NULL, NULL);
ast_sip_report_req_no_support(endpoint, rdata, "registrar_requested_aor_not_found");
ast_log(LOG_WARNING, "AOR '%s' not found for endpoint '%s' (%s:%d)\n",
aor_name ?: "", ast_sorcery_object_get_id(endpoint),
rdata->pkt_info.src_name, rdata->pkt_info.src_port);
}
ast_free(aor_name);
return aor;
}
static pj_bool_t registrar_on_rx_request(struct pjsip_rx_data *rdata)
{
RAII_VAR(struct ast_sip_endpoint *, endpoint,
ast_pjsip_rdata_get_endpoint(rdata), ao2_cleanup);
struct ast_sip_aor *aor;
const char *aor_name;
if (pjsip_method_cmp(&rdata->msg_info.msg->line.req.method, &pjsip_register_method) || !endpoint) {
return PJ_FALSE;
}
if (ast_strlen_zero(endpoint->aors)) {
/* Short circuit early if the endpoint has no AORs configured on it, which means no registration possible */
pjsip_endpt_respond_stateless(ast_sip_get_pjsip_endpoint(), rdata, 403, NULL, NULL, NULL);
ast_sip_report_failed_acl(endpoint, rdata, "registrar_attempt_without_configured_aors");
ast_log(LOG_WARNING, "Endpoint '%s' (%s:%d) has no configured AORs\n", ast_sorcery_object_get_id(endpoint),
rdata->pkt_info.src_name, rdata->pkt_info.src_port);
return PJ_TRUE;
}
if (!PJSIP_URI_SCHEME_IS_SIP(rdata->msg_info.to->uri) && !PJSIP_URI_SCHEME_IS_SIPS(rdata->msg_info.to->uri)) {
pjsip_endpt_respond_stateless(ast_sip_get_pjsip_endpoint(), rdata, 416, NULL, NULL, NULL);
ast_sip_report_failed_acl(endpoint, rdata, "registrar_invalid_uri_in_to_received");
ast_log(LOG_WARNING, "Endpoint '%s' (%s:%d) attempted to register to an AOR with a non-SIP URI\n", ast_sorcery_object_get_id(endpoint),
rdata->pkt_info.src_name, rdata->pkt_info.src_port);
return PJ_TRUE;
}
aor = find_registrar_aor(rdata, endpoint);
if (!aor) {
/* We've already responded about not finding an AOR. */
return PJ_TRUE;
}
aor_name = ast_sorcery_object_get_id(aor);
if (!aor->max_contacts) {
/* Registration is not permitted for this AOR */
pjsip_endpt_respond_stateless(ast_sip_get_pjsip_endpoint(), rdata, 403, NULL, NULL, NULL);
ast_sip_report_req_no_support(endpoint, rdata, "registrar_attempt_without_registration_permitted");
ast_log(LOG_WARNING, "AOR '%s' has no configured max_contacts. Endpoint '%s' (%s:%d) unable to register\n",
aor_name, ast_sorcery_object_get_id(endpoint),
rdata->pkt_info.src_name, rdata->pkt_info.src_port);
} else {
register_aor(rdata, endpoint, aor, aor_name);
}
ao2_ref(aor, -1);
return PJ_TRUE;
}
/* function pointer to callback needs to be within the module
in order to avoid problems with an undefined symbol */
static int sip_contact_to_str(void *acp, void *arg, int flags)
{
return ast_sip_contact_to_str(acp, arg, flags);
}
static int ami_registrations_aor(void *obj, void *arg, int flags)
{
struct ast_sip_aor *aor = obj;
struct ast_sip_ami *ami = arg;
int *count = ami->arg;
RAII_VAR(struct ast_str *, buf,
ast_sip_create_ami_event("InboundRegistrationDetail", ami), ast_free);
if (!buf) {
return -1;
}
ast_sip_sorcery_object_to_ami(aor, &buf);
ast_str_append(&buf, 0, "Contacts: ");
ast_sip_for_each_contact(aor, sip_contact_to_str, &buf);
ast_str_append(&buf, 0, "\r\n");
astman_append(ami->s, "%s\r\n", ast_str_buffer(buf));
(*count)++;
return 0;
}
static int ami_registrations_endpoint(void *obj, void *arg, int flags)
{
struct ast_sip_endpoint *endpoint = obj;
return ast_sip_for_each_aor(
endpoint->aors, ami_registrations_aor, arg);
}
static int ami_registrations_endpoints(void *arg)
{
RAII_VAR(struct ao2_container *, endpoints,
ast_sip_get_endpoints(), ao2_cleanup);
if (!endpoints) {
return 0;
}
ao2_callback(endpoints, OBJ_NODATA, ami_registrations_endpoint, arg);
return 0;
}
static int ami_show_registrations(struct mansession *s, const struct message *m)
{
int count = 0;
struct ast_sip_ami ami = { .s = s, .m = m, .arg = &count, .action_id = astman_get_header(m, "ActionID"), };
astman_send_listack(s, m, "Following are Events for each Inbound registration",
"start");
ami_registrations_endpoints(&ami);
astman_send_list_complete_start(s, m, "InboundRegistrationDetailComplete", count);
astman_send_list_complete_end(s);
return 0;
}
static int ami_show_registration_contact_statuses(struct mansession *s, const struct message *m)
{
int count = 0;
struct ast_sip_ami ami = { .s = s, .m = m, .arg = NULL, .action_id = astman_get_header(m, "ActionID"), };
struct ao2_container *contacts = ast_sorcery_retrieve_by_fields(
ast_sip_get_sorcery(), "contact", AST_RETRIEVE_FLAG_MULTIPLE | AST_RETRIEVE_FLAG_ALL, NULL);
struct ao2_iterator i;
struct ast_sip_contact *contact;
astman_send_listack(s, m, "Following are ContactStatusEvents for each Inbound "
"registration", "start");
if (contacts) {
i = ao2_iterator_init(contacts, 0);
while ((contact = ao2_iterator_next(&i))) {
struct ast_sip_contact_wrapper wrapper;
wrapper.aor_id = (char *)contact->aor;
wrapper.contact = contact;
wrapper.contact_id = (char *)ast_sorcery_object_get_id(contact);
ast_sip_format_contact_ami(&wrapper, &ami, 0);
count++;
ao2_ref(contact, -1);
}
ao2_iterator_destroy(&i);
ao2_ref(contacts, -1);
}
astman_send_list_complete_start(s, m, "ContactStatusDetailComplete", count);
astman_send_list_complete_end(s);
return 0;
}
#define AMI_SHOW_REGISTRATION_CONTACT_STATUSES "PJSIPShowRegistrationInboundContactStatuses"
#define AMI_SHOW_REGISTRATIONS "PJSIPShowRegistrationsInbound"
static pjsip_module registrar_module = {
.name = { "Registrar", 9 },
.id = -1,
.priority = PJSIP_MOD_PRIORITY_APPLICATION,
.on_rx_request = registrar_on_rx_request,
};
/*! \brief Thread keeping things alive */
static pthread_t check_thread = AST_PTHREADT_NULL;
/*! \brief The global interval at which to check for contact expiration */
static unsigned int check_interval;
/*! \brief Callback function which deletes a contact */
static int expire_contact(void *obj, void *arg, int flags)
{
struct ast_sip_contact *contact = obj;
struct ast_named_lock *lock;
lock = ast_named_lock_get(AST_NAMED_LOCK_TYPE_MUTEX, "aor", contact->aor);
if (!lock) {
return 0;
}
/*
* We need to check the expiration again with the aor lock held
* in case another thread is attempting to renew the contact.
*/
ao2_lock(lock);
if (ast_tvdiff_ms(ast_tvnow(), contact->expiration_time) > 0) {
registrar_contact_delete(CONTACT_DELETE_EXPIRE, NULL, contact, contact->aor);
}
ao2_unlock(lock);
ast_named_lock_put(lock);
return 0;
}
static void *check_expiration_thread(void *data)
{
struct ao2_container *contacts;
struct ast_variable *var;
char time[AST_TIME_T_LEN];
while (check_interval) {
sleep(check_interval);
ast_time_t_to_string(ast_tvnow().tv_sec, time, sizeof(time));
var = ast_variable_new("expiration_time <=", time, "");
ast_debug(4, "Woke up at %s Interval: %d\n", time, check_interval);
contacts = ast_sorcery_retrieve_by_fields(ast_sip_get_sorcery(), "contact",
AST_RETRIEVE_FLAG_MULTIPLE, var);
ast_variables_destroy(var);
if (contacts) {
ast_debug(3, "Expiring %d contacts\n", ao2_container_count(contacts));
ao2_callback(contacts, OBJ_NODATA, expire_contact, NULL);
ao2_ref(contacts, -1);
}
}
return NULL;
}
static void expiration_global_loaded(const char *object_type)
{
check_interval = ast_sip_get_contact_expiration_check_interval();
/* Observer calls are serialized so this is safe without it's own lock */
if (check_interval) {
if (check_thread == AST_PTHREADT_NULL) {
if (ast_pthread_create_background(&check_thread, NULL, check_expiration_thread, NULL)) {
ast_log(LOG_ERROR, "Could not create thread for checking contact expiration.\n");
return;
}
ast_debug(3, "Interval = %d, starting thread\n", check_interval);
}
} else {
if (check_thread != AST_PTHREADT_NULL) {
pthread_kill(check_thread, SIGURG);
pthread_join(check_thread, NULL);
check_thread = AST_PTHREADT_NULL;
ast_debug(3, "Interval = 0, shutting thread down\n");
}
}
}
/*! \brief Observer which is used to update our interval when the global setting changes */
static struct ast_sorcery_observer expiration_global_observer = {
.loaded = expiration_global_loaded,
};
static int load_module(void)
{
const pj_str_t STR_REGISTER = { "REGISTER", 8 };
ast_pjproject_get_buildopt("PJ_MAX_HOSTNAME", "%d", &pj_max_hostname);
/* As of pjproject 2.4.5, PJSIP_MAX_URL_SIZE isn't exposed yet but we try anyway. */
ast_pjproject_get_buildopt("PJSIP_MAX_URL_SIZE", "%d", &pjsip_max_url_size);
if (ast_sip_register_service(&registrar_module)) {
return AST_MODULE_LOAD_DECLINE;
}
if (pjsip_endpt_add_capability(ast_sip_get_pjsip_endpoint(), NULL, PJSIP_H_ALLOW, NULL, 1, &STR_REGISTER) != PJ_SUCCESS) {
ast_sip_unregister_service(&registrar_module);
return AST_MODULE_LOAD_DECLINE;
}
ast_manager_register_xml(AMI_SHOW_REGISTRATIONS, EVENT_FLAG_SYSTEM,
ami_show_registrations);
ast_manager_register_xml(AMI_SHOW_REGISTRATION_CONTACT_STATUSES, EVENT_FLAG_SYSTEM,
ami_show_registration_contact_statuses);
ast_sorcery_observer_add(ast_sip_get_sorcery(), "global", &expiration_global_observer);
ast_sorcery_reload_object(ast_sip_get_sorcery(), "global");
return AST_MODULE_LOAD_SUCCESS;
}
static int unload_module(void)
{
if (check_thread != AST_PTHREADT_NULL) {
check_interval = 0;
pthread_kill(check_thread, SIGURG);
pthread_join(check_thread, NULL);
check_thread = AST_PTHREADT_NULL;
}
ast_sorcery_observer_remove(ast_sip_get_sorcery(), "global", &expiration_global_observer);
ast_manager_unregister(AMI_SHOW_REGISTRATIONS);
ast_manager_unregister(AMI_SHOW_REGISTRATION_CONTACT_STATUSES);
ast_sip_unregister_service(&registrar_module);
ast_sip_transport_monitor_unregister_all(register_contact_transport_shutdown_cb, NULL, NULL);
return 0;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "PJSIP Registrar Support",
.support_level = AST_MODULE_SUPPORT_CORE,
.load = load_module,
.unload = unload_module,
.load_pri = AST_MODPRI_CHANNEL_DEPEND - 3,
.requires = "res_pjproject,res_pjsip",
);
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