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Purism-Calls/plugins/sip/calls-sip-origin.c
Evangelos Ribeiro Tzaras 0c966fdf83 origin: Add API to query supported protocols 
This will allow selecting a suitable origin when placing outgoing calls.
2021-05-28 17:02:02 +02:00

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/*
* Copyright (C) 2021 Purism SPC
*
* This file is part of Calls.
*
* Calls 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 3 of the License, or
* (at your option) any later version.
*
* Calls 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 Calls. If not, see <http://www.gnu.org/licenses/>.
*
* Author: Evangelos Ribeiro Tzaras <evangelos.tzaras@puri.sm>
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#define G_LOG_DOMAIN "CallsSipOrigin"
#include "calls-account.h"
#include "calls-credentials.h"
#include "calls-message-source.h"
#include "calls-origin.h"
#include "calls-sip-call.h"
#include "calls-sip-enums.h"
#include "calls-sip-origin.h"
#include "calls-sip-util.h"
#include "calls-sip-media-manager.h"
#include "config.h"
#include "enum-types.h"
#include <glib/gi18n.h>
#include <glib-object.h>
#include <sofia-sip/nua.h>
#include <sofia-sip/su_tag.h>
#include <sofia-sip/su_tag_io.h>
#include <sofia-sip/sip_util.h>
#include <sofia-sip/sdp.h>
/**
* SECTION:sip-origin
* @short_description: A #CallsOrigin for the SIP protocol
* @Title: CallsSipOrigin
*
* #CallsSipOrigin implements the #CallsOriginInterface and is mainly
* responsible for managing the sofia-sip callbacks, keeping track of #CallsSipCall
* objects and coordinating with #CallsSipMediaManager.
*/
enum {
PROP_0,
PROP_ACC_CREDENTIALS,
PROP_NAME,
PROP_ACC_DIRECT,
PROP_SIP_CONTEXT,
PROP_SIP_LOCAL_PORT,
PROP_ACC_STATE,
PROP_CALLS,
PROP_COUNTRY_CODE,
PROP_LAST_PROP,
};
static GParamSpec *props[PROP_LAST_PROP];
struct _CallsSipOrigin
{
GObject parent_instance;
CallsSipContext *ctx;
nua_t *nua;
CallsSipHandles *oper;
/* Direct connection mode is useful for debugging purposes */
gboolean use_direct_connection;
/* Needed to handle shutdown correctly. See sip_callback and dispose method */
gboolean is_nua_shutdown;
CallsAccountState state;
CallsSipMediaManager *media_manager;
/* Account information */
CallsCredentials *credentials;
const gchar *protocol_prefix;
gint local_port;
GList *calls;
GHashTable *call_handles;
};
static void calls_sip_origin_message_source_interface_init (CallsOriginInterface *iface);
static void calls_sip_origin_origin_interface_init (CallsOriginInterface *iface);
static void calls_sip_origin_accounts_interface_init (CallsAccountInterface *iface);
G_DEFINE_TYPE_WITH_CODE (CallsSipOrigin, calls_sip_origin, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (CALLS_TYPE_MESSAGE_SOURCE,
calls_sip_origin_message_source_interface_init)
G_IMPLEMENT_INTERFACE (CALLS_TYPE_ORIGIN,
calls_sip_origin_origin_interface_init)
G_IMPLEMENT_INTERFACE (CALLS_TYPE_ACCOUNT,
calls_sip_origin_accounts_interface_init))
static void
remove_call (CallsSipOrigin *self,
CallsCall *call,
const gchar *reason)
{
CallsOrigin *origin;
CallsSipCall *sip_call;
gboolean inbound;
nua_handle_t *nh;
origin = CALLS_ORIGIN (self);
sip_call = CALLS_SIP_CALL (call);
self->calls = g_list_remove (self->calls, call);
g_object_get (sip_call,
"inbound", &inbound,
"nua-handle", &nh,
NULL);
/* TODO support multiple simultaneous calls */
if (self->oper->call_handle == nh)
self->oper->call_handle = NULL;
g_signal_emit_by_name (origin, "call-removed", call, reason);
g_object_unref (call);
}
static void
remove_calls (CallsSipOrigin *self,
const gchar *reason)
{
CallsCall *call;
GList *next;
while (self->calls != NULL) {
call = self->calls->data;
next = self->calls->next;
calls_call_hang_up (call);
g_list_free_1 (self->calls);
self->calls = next;
g_signal_emit_by_name (self, "call-removed", call, reason);
g_object_unref (call);
}
g_hash_table_remove_all (self->call_handles);
g_clear_pointer (&self->oper->call_handle, nua_handle_unref);
}
static void
on_call_state_changed (CallsSipOrigin *self,
CallsCallState new_state,
CallsCallState old_state,
CallsCall *call)
{
g_assert (CALLS_IS_SIP_ORIGIN (self));
g_assert (CALLS_IS_CALL (call));
if (new_state != CALLS_CALL_STATE_DISCONNECTED)
{
return;
}
remove_call (self, call, "Disconnected");
}
static void
add_call (CallsSipOrigin *self,
const gchar *address,
gboolean inbound,
nua_handle_t *handle)
{
CallsSipCall *sip_call;
CallsCall *call;
g_autofree gchar *local_sdp = NULL;
/* TODO get free port by creating GSocket and passing that to the pipeline */
guint local_port = get_port_for_rtp ();
sip_call = calls_sip_call_new (address, inbound, handle);
g_assert (sip_call != NULL);
if (self->oper->call_handle)
nua_handle_unref (self->oper->call_handle);
self->oper->call_handle = handle;
self->calls = g_list_append (self->calls, sip_call);
g_hash_table_insert (self->call_handles, handle, sip_call);
call = CALLS_CALL (sip_call);
g_signal_emit_by_name (CALLS_ORIGIN (self), "call-added", call);
g_signal_connect_swapped (call, "state-changed",
G_CALLBACK (on_call_state_changed),
self);
if (!inbound) {
calls_sip_call_setup_local_media_connection (sip_call, local_port, local_port + 1);
local_sdp = calls_sip_media_manager_static_capabilities (self->media_manager,
local_port,
check_sips (address));
g_assert (local_sdp);
g_debug ("Setting local SDP for outgoing call to %s:\n%s", address, local_sdp);
/* TODO transform tel URI according to https://tools.ietf.org/html/rfc3261#section-19.1.6 */
/* TODO handle IPv4 vs IPv6 for nua_invite (SOATAG_TAG) */
nua_invite (self->oper->call_handle,
SOATAG_AF (SOA_AF_IP4_IP6),
SOATAG_USER_SDP_STR (local_sdp),
SIPTAG_TO_STR (address),
SOATAG_RTP_SORT (SOA_RTP_SORT_REMOTE),
SOATAG_RTP_SELECT (SOA_RTP_SELECT_ALL),
TAG_END ());
}
}
static void
dial (CallsOrigin *origin,
const gchar *address)
{
CallsSipOrigin *self;
nua_handle_t *nh;
g_autofree char *name = NULL;
g_assert (CALLS_ORIGIN (origin));
g_assert (CALLS_IS_SIP_ORIGIN (origin));
name = calls_origin_get_name (origin);
if (address == NULL) {
g_warning ("Tried dialing on origin '%s' without an address",
name);
return;
}
self = CALLS_SIP_ORIGIN (origin);
nh = nua_handle (self->nua, self->oper,
NUTAG_MEDIA_ENABLE (1),
SOATAG_ACTIVE_AUDIO (SOA_ACTIVE_SENDRECV),
TAG_END ());
g_debug ("Calling `%s' from origin '%s'", address, name);
add_call (CALLS_SIP_ORIGIN (origin), address, FALSE, nh);
}
static void
create_inbound (CallsSipOrigin *self,
const gchar *address,
nua_handle_t *handle)
{
g_assert (CALLS_IS_SIP_ORIGIN (self));
g_assert (address != NULL);
/* TODO support multiple calls */
if (self->oper->call_handle)
nua_handle_unref (self->oper->call_handle);
self->oper->call_handle = handle;
add_call (self, address, TRUE, handle);
}
static void
update_nua (CallsSipOrigin *self)
{
gboolean use_sips = FALSE;
gboolean use_ipv6 = FALSE; /* TODO make configurable or use DNS to figure out if ipv6 is supported*/
gchar *ipv6_bind = "*";
gchar *ipv4_bind = "0.0.0.0";
g_autofree gchar *sip_url = NULL;
g_autofree gchar *sips_url = NULL;
g_autofree char *user = NULL;
g_autofree char *host = NULL;
g_autofree gchar *address = NULL;
g_assert (CALLS_IS_SIP_ORIGIN (self));
g_assert (self->nua);
g_object_get (self->credentials,
"user", &user,
"host", &host,
NULL);
if (user && host) {
address = g_strconcat (self->protocol_prefix, ":", user, "@", host, NULL);
use_sips = check_sips (address);
use_ipv6 = check_ipv6 (host);
}
if (self->local_port > 0) {
sip_url = g_strdup_printf ("sip:%s:%d",
use_ipv6 ? ipv6_bind : ipv4_bind,
self->local_port);
sips_url = g_strdup_printf ("sips:%s:%d",
use_ipv6 ? ipv6_bind : ipv4_bind,
self->local_port);
} else {
sip_url = g_strdup_printf ("sip:%s:*",
use_ipv6 ? ipv6_bind : ipv4_bind);
sips_url = g_strdup_printf ("sips:%s:*",
use_ipv6 ? ipv6_bind : ipv4_bind);
}
nua_set_params (self->nua,
NUTAG_URL (sip_url),
TAG_IF (use_sips, NUTAG_SIPS_URL (sips_url)),
TAG_IF (address, SIPTAG_FROM_STR (address)),
TAG_NULL ());
}
static void
update_credentials (CallsSipOrigin *self)
{
g_autofree char *protocol = NULL;
g_assert (CALLS_IS_SIP_ORIGIN (self));
g_debug ("Updating credentials");
g_object_get (self->credentials,
"protocol", &protocol,
NULL);
if (protocol == NULL) {
g_debug ("Protocol not set, falling back to 'UDP'");
g_object_set (self->credentials, "protocol", "UDP", NULL);
self->protocol_prefix = get_protocol_prefix ("UDP");
} else if (!protocol_is_valid (protocol)) {
g_warning ("Tried setting invalid protocol: '%s'\n"
"Falling back to default: '%s'",
protocol, "UDP");
g_object_set (self->credentials, "protocol", "UDP", NULL);
self->protocol_prefix = get_protocol_prefix ("UDP");
} else {
self->protocol_prefix = get_protocol_prefix (protocol);
}
if (self->nua)
update_nua (self);
}
static void
sip_authenticate (CallsSipOrigin *self,
nua_handle_t *nh,
sip_t const *sip)
{
const gchar *scheme = NULL;
const gchar *realm = NULL;
g_autofree gchar *auth = NULL;
g_autofree char *user = NULL;
g_autofree char *password = NULL;
sip_www_authenticate_t *www_auth = sip->sip_www_authenticate;
sip_proxy_authenticate_t *proxy_auth = sip->sip_proxy_authenticate;
if (www_auth) {
scheme = www_auth->au_scheme;
realm = msg_params_find (www_auth->au_params, "realm=");
}
else if (proxy_auth) {
scheme = proxy_auth->au_scheme;
realm = msg_params_find (proxy_auth->au_params, "realm=");
}
else {
g_warning ("No authentication context found");
return;
}
g_debug ("need to authenticate to realm %s", realm);
g_object_get (self->credentials,
"user", &user,
"password", &password,
NULL);
/* TODO handle authentication to different realms
* https://source.puri.sm/Librem5/calls/-/issues/266
*/
auth = g_strdup_printf ("%s:%s:%s:%s",
scheme, realm, user, password);
nua_authenticate (nh, NUTAG_AUTH (auth), TAG_END ());
}
static void
sip_r_invite (int status,
char const *phrase,
nua_t *nua,
CallsSipOrigin *origin,
nua_handle_t *nh,
CallsSipHandles *op,
sip_t const *sip,
tagi_t tags[])
{
g_debug ("response to outgoing INVITE: %03d %s", status, phrase);
/* TODO call states (see i_state) */
if (status == 401 || status == 407) {
sip_authenticate (origin, nh, sip);
}
else if (status == 403) {
g_warning ("Response to outgoing INVITE: 403 wrong credentials?");
}
else if (status == 904) {
g_warning ("Response to outgoing INVITE: 904 unmatched challenge."
"Possibly the challenge was already answered?");
}
else if (status == 180) {
}
else if (status == 100) {
}
else if (status == 200) {
}
}
static void
sip_r_register (int status,
char const *phrase,
nua_t *nua,
CallsSipOrigin *origin,
nua_handle_t *nh,
CallsSipHandles *op,
sip_t const *sip,
tagi_t tags[])
{
g_debug ("response to REGISTER: %03d %s", status, phrase);
if (status == 200) {
g_debug ("REGISTER successful");
origin->state = CALLS_ACCOUNT_ONLINE;
}
else if (status == 401 || status == 407) {
sip_authenticate (origin, nh, sip);
origin->state = CALLS_ACCOUNT_AUTHENTICATING;
}
else if (status == 403) {
g_warning ("wrong credentials?");
origin->state = CALLS_ACCOUNT_AUTHENTICATION_FAILURE;
}
else if (status == 904) {
g_warning ("unmatched challenge");
origin->state = CALLS_ACCOUNT_AUTHENTICATION_FAILURE;
}
g_object_notify_by_pspec (G_OBJECT (origin), props[PROP_ACC_STATE]);
}
static void
sip_i_state (int status,
char const *phrase,
nua_t *nua,
CallsSipOrigin *origin,
nua_handle_t *nh,
CallsSipHandles *op,
sip_t const *sip,
tagi_t tags[])
{
const sdp_session_t *r_sdp = NULL;
const sdp_session_t *l_sdp = NULL;
gint call_state = nua_callstate_init;
CallsCallState state;
CallsSipCall *call;
int offer_sent = 0;
int offer_recv = 0;
int answer_sent = 0;
int answer_recv = 0;
g_assert (CALLS_IS_SIP_ORIGIN (origin));
g_debug ("The call state has changed: %03d %s", status, phrase);
call = g_hash_table_lookup (origin->call_handles, nh);
if (call == NULL) {
g_warning ("No call found for the current handle");
return;
}
tl_gets (tags,
SOATAG_LOCAL_SDP_REF (l_sdp),
SOATAG_REMOTE_SDP_REF (r_sdp),
NUTAG_CALLSTATE_REF (call_state),
NUTAG_OFFER_SENT_REF (offer_sent),
NUTAG_OFFER_RECV_REF (offer_recv),
NUTAG_ANSWER_SENT_REF (answer_sent),
NUTAG_ANSWER_RECV_REF (answer_recv),
TAG_END ());
if (status == 503) {
CALLS_EMIT_MESSAGE (origin, "DNS error", GTK_MESSAGE_ERROR);
}
/* XXX making some assumptions about the received SDP message here...
* namely: that there is only the session wide connection c= line
* and no individual connections per media stream.
* also: rtcp port = rtp port + 1
*/
if (r_sdp) {
GList *codecs =
calls_sip_media_manager_get_codecs_from_sdp (origin->media_manager,
r_sdp->sdp_media);
calls_sip_call_set_codecs (call, codecs);
calls_sip_call_setup_remote_media_connection (call,
r_sdp->sdp_connection->c_address,
r_sdp->sdp_media->m_port,
r_sdp->sdp_media->m_port + 1);
}
switch (call_state) {
case nua_callstate_init:
return;
case nua_callstate_calling:
state = CALLS_CALL_STATE_DIALING;
break;
case nua_callstate_received:
state = CALLS_CALL_STATE_INCOMING;
g_debug ("Call incoming");
break;
case nua_callstate_ready:
g_debug ("Call ready. Activating media pipeline");
calls_sip_call_activate_media (call, TRUE);
state = CALLS_CALL_STATE_ACTIVE;
break;
case nua_callstate_terminated:
g_debug ("Call terminated. Deactivating media pipeline");
calls_sip_call_activate_media (call, FALSE);
state = CALLS_CALL_STATE_DISCONNECTED;
g_hash_table_remove (origin->call_handles, nh);
break;
default:
return;
}
calls_sip_call_set_state (call, state);
}
static void
sip_callback (nua_event_t event,
int status,
char const *phrase,
nua_t *nua,
nua_magic_t *magic,
nua_handle_t *nh,
nua_hmagic_t *hmagic,
sip_t const *sip,
tagi_t tags[])
{
CallsSipOrigin *origin = CALLS_SIP_ORIGIN (magic);
CallsSipHandles *op = origin->oper;
g_autofree gchar * from = NULL;
switch (event) {
case nua_i_invite:
if (sip->sip_from && sip->sip_from->a_url &&
sip->sip_from->a_url->url_scheme &&
sip->sip_from->a_url->url_user &&
sip->sip_from->a_url->url_host)
from = g_strconcat (sip->sip_from->a_url->url_scheme, ":",
sip->sip_from->a_url->url_user, "@",
sip->sip_from->a_url->url_host, NULL);
else {
nua_respond (nh, 400, NULL, TAG_END ());
g_warning ("invalid incoming INVITE request");
break;
}
g_debug ("incoming call INVITE: %03d %s from %s", status, phrase, from);
/* reject if there already is a ongoing call */
if (op->call_handle) {
nua_respond (nh, 486, NULL, TAG_END ());
g_debug ("Cannot handle more than one call. Rejecting");
}
else
create_inbound (origin, from, nh);
break;
case nua_r_invite:
sip_r_invite (status,
phrase,
nua,
origin,
nh,
op,
sip,
tags);
break;
case nua_i_ack:
g_debug ("incoming ACK: %03d %s", status, phrase);
break;
case nua_i_bye:
g_debug ("incoming BYE: %03d %s", status, phrase);
break;
case nua_r_bye:
g_debug ("response to BYE: %03d %s", status, phrase);
if (status == 200) {
CallsSipCall *call =
CALLS_SIP_CALL (g_hash_table_lookup (origin->call_handles, nh));
if (call == NULL) {
g_warning ("BYE response from an unknown call");
return;
}
}
break;
case nua_r_register:
sip_r_register (status,
phrase,
nua,
origin,
nh,
op,
sip,
tags);
break;
case nua_r_set_params:
g_debug ("response to set_params: %03d %s", status, phrase);
break;
case nua_i_outbound:
g_debug ("status of outbound engine has changed: %03d %s", status, phrase);
if (status == 404) {
CALLS_EMIT_MESSAGE (origin, "contact not found", GTK_MESSAGE_ERROR);
g_warning ("outbound engine changed state to %03d %s", status, phrase);
}
break;
case nua_i_state:
sip_i_state (status,
phrase,
nua,
origin,
nh,
op,
sip,
tags);
break;
case nua_r_cancel:
g_debug ("response to CANCEL: %03d %s", status, phrase);
break;
case nua_r_terminate:
break;
case nua_r_shutdown:
/* see also deinit_sip () */
g_debug ("response to nua_shutdown: %03d %s", status, phrase);
if (status == 200)
origin->is_nua_shutdown = TRUE;
break;
/* Deprecated events */
case nua_i_active:
break;
case nua_i_terminated:
break;
default:
/* unknown event -> print out error message */
g_warning ("unknown event %d: %03d %s",
event,
status,
phrase);
g_warning ("printing tags");
tl_print(stdout, "", tags);
break;
}
}
static nua_t *
setup_nua (CallsSipOrigin *self)
{
g_autofree gchar *address = NULL;
nua_t *nua;
gboolean use_sips = FALSE;
gboolean use_ipv6 = FALSE; /* TODO make configurable or use DNS to figure out if ipv6 is supported*/
gchar *ipv6_bind = "*";
gchar *ipv4_bind = "0.0.0.0";
g_autofree gchar *sip_url = NULL;
g_autofree gchar *sips_url = NULL;
const gchar *uuid = NULL;
g_autofree gchar* urn_uuid = NULL;
g_autofree char *user = NULL;
g_autofree char *host = NULL;
uuid = nua_generate_instance_identifier (self->ctx->home);
urn_uuid = g_strdup_printf ("urn:uuid:%s", uuid);
g_object_get (self->credentials,
"user", &user,
"host", &host,
NULL);
if (user && host) {
address = g_strconcat (self->protocol_prefix, ":", user, "@", host, NULL);
use_sips = check_sips (address);
use_ipv6 = check_ipv6 (host);
}
if (self->local_port > 0) {
sip_url = g_strdup_printf ("sip:%s:%d",
use_ipv6 ? ipv6_bind : ipv4_bind,
self->local_port);
sips_url = g_strdup_printf ("sips:%s:%d",
use_ipv6 ? ipv6_bind : ipv4_bind,
self->local_port);
} else {
sip_url = g_strdup_printf ("sip:%s:*",
use_ipv6 ? ipv6_bind : ipv4_bind);
sips_url = g_strdup_printf ("sips:%s:*",
use_ipv6 ? ipv6_bind : ipv4_bind);
}
nua = nua_create (self->ctx->root,
sip_callback,
self,
NUTAG_USER_AGENT (APP_DATA_NAME),
NUTAG_URL (sip_url),
TAG_IF (use_sips, NUTAG_SIPS_URL (sips_url)),
TAG_IF (address, SIPTAG_FROM_STR (address)),
NUTAG_ALLOW ("INVITE, ACK, BYE, CANCEL, OPTIONS, UPDATE"),
NUTAG_SUPPORTED ("replaces, gruu, outbound"),
NTATAG_MAX_FORWARDS (70),
NUTAG_ENABLEINVITE (1),
NUTAG_AUTOANSWER (0),
NUTAG_AUTOACK (1),
NUTAG_PATH_ENABLE (0),
NUTAG_MEDIA_ENABLE (1),
NUTAG_INSTANCE (urn_uuid),
TAG_NULL ());
return nua;
}
static char *
get_registrar_url (CallsSipOrigin *self)
{
char *registrar_url = NULL;
g_autofree char *host = NULL;
gint port;
g_assert (CALLS_IS_SIP_ORIGIN (self));
g_object_get (self->credentials,
"host", &host,
"port", &port,
NULL);
if (port > 0 && port <= 65535)
registrar_url =
g_strdup_printf ("%s:%s:%d", self->protocol_prefix, host, port);
else
registrar_url = g_strconcat (self->protocol_prefix, ":", host, NULL);
return registrar_url;
}
static CallsSipHandles *
setup_sip_handles (CallsSipOrigin *self)
{
CallsSipHandles *oper;
g_autofree gchar *registrar_url = NULL;
g_assert (CALLS_IS_SIP_ORIGIN (self));
if (!(oper = su_zalloc (self->ctx->home, sizeof(CallsSipHandles)))) {
g_warning ("cannot create handle");
return NULL;
}
oper->context = self->ctx;
oper->register_handle = nua_handle (self->nua, self->oper,
SIPTAG_EXPIRES_STR ("180"),
NUTAG_SUPPORTED ("replaces, outbound, gruu"),
NUTAG_OUTBOUND ("outbound natify gruuize validate"), // <- janus uses "no-validate"
NUTAG_M_PARAMS ("user=phone"),
NUTAG_CALLEE_CAPS (1), /* header parameters based on SDP capabilities and Allow header */
TAG_END ());
oper->call_handle = NULL;
return oper;
}
static void
go_online (CallsAccount *account,
gboolean online)
{
CallsSipOrigin *self;
g_assert (CALLS_IS_ACCOUNT (account));
g_assert (CALLS_IS_ORIGIN (account));
g_assert (CALLS_IS_SIP_ORIGIN (account));
self = CALLS_SIP_ORIGIN (account);
if (online) {
g_autofree char *user = NULL;
g_autofree char *display_name = NULL;
g_autofree char *registrar_url = NULL;
if (self->state == CALLS_ACCOUNT_ONLINE)
return;
g_object_get (self->credentials,
"user", &user,
"display-name", &display_name,
NULL);
registrar_url = get_registrar_url (self);
nua_register (self->oper->register_handle,
NUTAG_M_USERNAME (user),
TAG_IF (display_name, NUTAG_M_DISPLAY (display_name)),
NUTAG_REGISTRAR (registrar_url),
TAG_END ());
}
else {
if (self->state == CALLS_ACCOUNT_OFFLINE)
return;
nua_unregister (self->oper->register_handle,
TAG_END ());
}
g_object_notify_by_pspec (G_OBJECT (self), props[PROP_ACC_STATE]);
}
static void
setup_account_for_direct_connection (CallsSipOrigin *self)
{
g_autofree char *user = NULL;
g_assert (CALLS_IS_SIP_ORIGIN (self));
g_object_get (self->credentials, "user", &user, NULL);
/* honour username, if previously set */
if (user == NULL)
g_object_set (self->credentials,
"user", g_get_user_name (),
NULL);
g_object_set (self->credentials,
"host", g_get_host_name (),
"password", NULL,
"protocol", "UDP",
NULL);
self->protocol_prefix = get_protocol_prefix ("UDP");
g_debug ("Account changed:\nuser: %s\nhost URL: %s",
user ?: g_get_user_name (), g_get_host_name ());
}
static gboolean
is_account_complete (CallsSipOrigin *self)
{
g_autofree char *host = NULL;
g_autofree char *user = NULL;
g_autofree char *password = NULL;
g_autofree char *protocol = NULL;
g_assert (CALLS_IS_SIP_ORIGIN (self));
g_object_get (self->credentials,
"host", &host,
"user", &user,
"password", &password,
"protocol", &protocol,
NULL);
/* we need only need to check for password if needing to authenticate over a proxy/UAS */
if (user == NULL ||
(!self->use_direct_connection && password == NULL) ||
host == NULL ||
protocol == NULL)
return FALSE;
return TRUE;
}
static gboolean
init_sip_account (CallsSipOrigin *self,
GError **error)
{
gboolean auto_connect = FALSE;
if (self->use_direct_connection) {
g_debug ("Direct connection case. Using user and hostname");
setup_account_for_direct_connection (self);
}
if (!is_account_complete (self)) {
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Must have completed account setup before calling"
"init_sip_account ()"
"Try again when account is setup");
self->state = CALLS_ACCOUNT_NO_CREDENTIALS;
goto err;
}
// setup_nua and setup_oper only after account data has been set
self->nua = setup_nua (self);
if (self->nua == NULL) {
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed setting up nua context");
self->state = CALLS_ACCOUNT_NULL;
goto err;
}
self->oper = setup_sip_handles (self);
if (self->oper == NULL) {
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed setting operation handles");
self->state = CALLS_ACCOUNT_NULL;
goto err;
}
/* In the case of a direct connection we're immediately good to go */
if (self->use_direct_connection)
self->state = CALLS_ACCOUNT_ONLINE;
else {
self->state = CALLS_ACCOUNT_OFFLINE;
g_object_get (self->credentials, "auto-connect", &auto_connect, NULL);
/* try to go online */
if (auto_connect)
go_online (CALLS_ACCOUNT (self), TRUE);
}
g_object_notify_by_pspec (G_OBJECT (self), props[PROP_ACC_STATE]);
return TRUE;
err:
g_object_notify_by_pspec (G_OBJECT (self), props[PROP_ACC_STATE]);
return FALSE;
}
static gboolean
supports_protocol (CallsOrigin *origin,
const char *protocol)
{
CallsSipOrigin *self;
g_assert (protocol);
g_assert (CALLS_IS_SIP_ORIGIN (origin));
self = CALLS_SIP_ORIGIN (origin);
if (g_strcmp0 (protocol, "sip") == 0)
return TRUE;
if (g_strcmp0 (protocol, "sips") == 0)
return g_strcmp0 (self->protocol_prefix, "sips") == 0;
/* TODO need to set a property (from the UI) to allow using origin for telephony */
return FALSE;
}
static void
calls_sip_origin_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
CallsSipOrigin *self = CALLS_SIP_ORIGIN (object);
switch (property_id) {
case PROP_ACC_CREDENTIALS:
self->credentials = g_value_get_object (value);
update_credentials (self);
break;
case PROP_ACC_DIRECT:
self->use_direct_connection = g_value_get_boolean (value);
break;
case PROP_SIP_CONTEXT:
self->ctx = g_value_get_pointer (value);
break;
case PROP_ACC_STATE:
g_warning ("Setting the account state does not yet have any effect");
break;
case PROP_SIP_LOCAL_PORT:
if (g_value_get_int (value) > 0 && g_value_get_int (value) < 1025) {
g_warning ("Tried setting a privileged port as the local port to bind to: %d\n"
"Continue using old 'local-port' value: %d (using 0 let's the OS decide)",
g_value_get_int (value), self->local_port);
return;
}
self->local_port = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
calls_sip_origin_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
CallsSipOrigin *self = CALLS_SIP_ORIGIN (object);
g_autofree char *name = NULL;
switch (property_id) {
case PROP_NAME:
g_object_get (self->credentials, "name", &name, NULL);
g_value_set_string (value, name);
break;
case PROP_CALLS:
g_value_set_pointer (value, g_list_copy (self->calls));
break;
case PROP_ACC_STATE:
g_value_set_enum (value, self->state);
break;
case PROP_SIP_LOCAL_PORT:
g_value_set_int (value, self->local_port);
break;
case PROP_COUNTRY_CODE:
g_value_set_string (value, NULL);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
calls_sip_origin_constructed (GObject *object)
{
CallsSipOrigin *self = CALLS_SIP_ORIGIN (object);
g_autoptr (GError) error = NULL;
if (!init_sip_account (self, &error)) {
g_warning ("Error initializing the SIP account: %s", error->message);
}
self->media_manager = calls_sip_media_manager_default ();
g_signal_connect_swapped (self->credentials, "account-updated",
(GCallback) update_credentials, self);
G_OBJECT_CLASS (calls_sip_origin_parent_class)->constructed (object);
}
static void
calls_sip_origin_dispose (GObject *object)
{
CallsSipOrigin *self = CALLS_SIP_ORIGIN (object);
if (self->state == CALLS_ACCOUNT_NULL)
return;
remove_calls (self, NULL);
if (self->oper) {
g_clear_pointer (&self->oper->call_handle, nua_handle_unref);
g_clear_pointer (&self->oper->register_handle, nua_handle_unref);
if (!self->use_direct_connection && self->state == CALLS_ACCOUNT_OFFLINE)
go_online (CALLS_ACCOUNT (self), FALSE);
}
if (self->nua) {
g_debug ("Requesting nua_shutdown ()");
nua_shutdown (self->nua);
// need to wait for nua_r_shutdown event before calling nua_destroy ()
while (!self->is_nua_shutdown)
su_root_step (self->ctx->root, 100);
g_debug ("nua_shutdown () complete. Destroying nua handle");
nua_destroy (self->nua);
self->nua = NULL;
}
self->state = CALLS_ACCOUNT_NULL;
G_OBJECT_CLASS (calls_sip_origin_parent_class)->dispose (object);
}
static void
calls_sip_origin_finalize (GObject *object)
{
CallsSipOrigin *self = CALLS_SIP_ORIGIN (object);
g_object_unref (self->credentials);
g_hash_table_destroy (self->call_handles);
G_OBJECT_CLASS (calls_sip_origin_parent_class)->finalize (object);
}
static void
calls_sip_origin_class_init (CallsSipOriginClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = calls_sip_origin_constructed;
object_class->dispose = calls_sip_origin_dispose;
object_class->finalize = calls_sip_origin_finalize;
object_class->get_property = calls_sip_origin_get_property;
object_class->set_property = calls_sip_origin_set_property;
props[PROP_ACC_DIRECT] =
g_param_spec_boolean ("direct-connection",
"Direct connection",
"Whether to use a direct connection (no SIP server)",
FALSE,
G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_property (object_class, PROP_ACC_DIRECT, props[PROP_ACC_DIRECT]);
props[PROP_SIP_CONTEXT] =
g_param_spec_pointer ("sip-context",
"SIP context",
"The SIP context (sofia) used for our sip handles",
G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_property (object_class, PROP_SIP_CONTEXT, props[PROP_SIP_CONTEXT]);
props[PROP_SIP_LOCAL_PORT] =
g_param_spec_int ("local-port",
"Local port",
"The local port to which the SIP stack binds to",
0, 65535, 0,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_property (object_class, PROP_SIP_LOCAL_PORT, props[PROP_SIP_LOCAL_PORT]);
g_object_class_override_property (object_class, PROP_ACC_CREDENTIALS, "account-credentials");
props[PROP_ACC_CREDENTIALS] = g_object_class_find_property (object_class, "account-credentials");
g_object_class_override_property (object_class, PROP_ACC_STATE, "account-state");
props[PROP_ACC_STATE] = g_object_class_find_property (object_class, "account-state");
#define IMPLEMENTS(ID, NAME) \
g_object_class_override_property (object_class, ID, NAME); \
props[ID] = g_object_class_find_property(object_class, NAME);
IMPLEMENTS (PROP_NAME, "name");
IMPLEMENTS (PROP_CALLS, "calls");
IMPLEMENTS (PROP_COUNTRY_CODE, "country-code");
#undef IMPLEMENTS
}
static void
calls_sip_origin_message_source_interface_init (CallsOriginInterface *iface)
{
}
static void
calls_sip_origin_origin_interface_init (CallsOriginInterface *iface)
{
iface->dial = dial;
iface->supports_protocol = supports_protocol;
}
static void
calls_sip_origin_accounts_interface_init (CallsAccountInterface *iface)
{
iface->go_online = go_online;
}
static void
calls_sip_origin_init (CallsSipOrigin *self)
{
self->call_handles = g_hash_table_new (NULL, NULL);
}
CallsSipOrigin *
calls_sip_origin_new (CallsSipContext *sip_context,
CallsCredentials *credentials,
gint local_port,
gboolean direct_connection)
{
g_return_val_if_fail (sip_context, NULL);
g_return_val_if_fail (credentials, NULL);
return g_object_new (CALLS_TYPE_SIP_ORIGIN,
"sip-context", sip_context,
"account-credentials", g_object_ref (credentials),
"local-port", local_port,
"direct-connection", direct_connection,
NULL);
}
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