/*! \brief Helper function which retrieves or allocates a T.38 state information datastore */
static struct t38_state *t38_state_get_or_alloc(struct ast_sip_session *session)
{
RAII_VAR(struct ast_datastore *, datastore, ast_sip_session_get_datastore(session, "t38"), ao2_cleanup);
struct t38_state *state;
/* While the datastore refcount is decremented this is operating in the serializer so it will remain valid regardless */
if (datastore) {
return datastore->data;
}
if (!(datastore = ast_sip_session_alloc_datastore(&t38_datastore, "t38"))
|| !(datastore->data = ast_calloc(1, sizeof(struct t38_state)))
|| ast_sip_session_add_datastore(session, datastore)) {
return NULL;
}
state = datastore->data;
/* This will get bumped up before scheduling */
state->timer.user_data = session;
state->timer.cb = t38_automatic_reject_timer_cb;
datastore->data = state;
return state;
}
/*!
* \internal
* \brief Session supplement callback on an incoming INVITE request
*
* Retrieve the header_datastore from the session or create one if it doesn't exist.
* Create and initialize the list if needed.
* Insert the headers.
*/
static int incoming_request(struct ast_sip_session *session, pjsip_rx_data * rdata)
{
pj_pool_t *pool = session->inv_session->dlg->pool;
RAII_VAR(struct ast_datastore *, datastore,
ast_sip_session_get_datastore(session, header_datastore.type), ao2_cleanup);
if (!datastore) {
if (!(datastore =
ast_sip_session_alloc_datastore(&header_datastore, header_datastore.type))
||
!(datastore->data = pj_pool_alloc(pool, sizeof(struct hdr_list))) ||
ast_sip_session_add_datastore(session, datastore)) {
ast_log(AST_LOG_ERROR, "Unable to create datastore for header functions.\n");
return 0;
}
AST_LIST_HEAD_INIT((struct hdr_list *) datastore->data);
}
insert_headers(pool, (struct hdr_list *) datastore->data, rdata->msg_info.msg);
return 0;
}
/*!
* \internal
* \brief Implements PJSIP_HEADER 'add' by inserting the specified header into thge list.
*
* Retrieve the header_datastore from the session or create one if it doesn't exist.
* Create and initialize the list if needed.
* Create the pj_strs for name and value.
* Create pjsip_msg and hdr_list_entry.
* Add the entry to the list.
*/
static int add_header(void *obj)
{
struct header_data *data = obj;
struct ast_sip_session *session = data->channel->session;
pj_pool_t *pool = session->inv_session->dlg->pool;
pj_str_t pj_header_name;
pj_str_t pj_header_value;
struct hdr_list_entry *le;
struct hdr_list *list;
RAII_VAR(struct ast_datastore *, datastore,
ast_sip_session_get_datastore(session, header_datastore.type), ao2_cleanup);
if (!datastore) {
if (!(datastore = ast_sip_session_alloc_datastore(&header_datastore,
header_datastore.type))
|| !(datastore->data = pj_pool_alloc(pool, sizeof(struct hdr_list)))
|| ast_sip_session_add_datastore(session, datastore)) {
ast_log(AST_LOG_ERROR, "Unable to create datastore for header functions.\n");
return -1;
}
AST_LIST_HEAD_INIT((struct hdr_list *) datastore->data);
}
ast_debug(1, "Adding header %s with value %s\n", data->header_name,
data->header_value);
pj_cstr(&pj_header_name, data->header_name);
pj_cstr(&pj_header_value, data->header_value);
le = pj_pool_zalloc(pool, sizeof(struct hdr_list_entry));
le->hdr = (pjsip_hdr *) pjsip_generic_string_hdr_create(pool, &pj_header_name,
&pj_header_value);
list = datastore->data;
AST_LIST_INSERT_TAIL(list, le, nextptr);
return 0;
}
static int handle_incoming_request(struct ast_sip_session *session, struct pjsip_rx_data *rdata)
{
struct ast_datastore *sip_session_datastore;
struct ast_channel *other_party;
int has_feature;
int has_reason;
if (!session->channel) {
return 0;
}
has_feature = has_call_feature(rdata);
has_reason = has_diversion_reason(rdata);
if (!has_feature && !has_reason) {
/* If we don't have a call feature or diversion reason or if
it's not a feature this module is related to then there
is nothing to do. */
return 0;
}
/* Check bridge status... */
other_party = ast_channel_bridge_peer(session->channel);
if (!other_party) {
/* The channel wasn't in a two party bridge */
ast_log(LOG_WARNING, "%s (%s) attempted to transfer to voicemail, "
"but was not in a two party bridge.\n",
ast_sorcery_object_get_id(session->endpoint),
ast_channel_name(session->channel));
send_response(session, 400, rdata);
return -1;
}
sip_session_datastore = ast_sip_session_alloc_datastore(
&call_feature_info, DATASTORE_NAME);
if (!sip_session_datastore) {
ast_channel_unref(other_party);
send_response(session, 500, rdata);
return -1;
}
sip_session_datastore->data = other_party;
if (ast_sip_session_add_datastore(session, sip_session_datastore)) {
ast_channel_unref(other_party);
ao2_ref(sip_session_datastore, -1);
send_response(session, 500, rdata);
return -1;
}
ao2_ref(sip_session_datastore, -1);
if (has_feature) {
pbx_builtin_setvar_helper(other_party, SEND_TO_VM_HEADER,
SEND_TO_VM_HEADER_VALUE);
}
if (has_reason) {
pbx_builtin_setvar_helper(other_party, SEND_TO_VM_REDIRECT,
SEND_TO_VM_REDIRECT_VALUE);
}
return 0;
}
