/*!
* \internal
* \brief Session supplement callback for outgoing INVITE requests
*
* For an initial INVITE request, we may change the From header to appropriately
* reflect the identity information. On all INVITEs (initial and reinvite) we may
* add other identity headers such as P-Asserted-Identity and Remote-Party-ID based
* on configuration and privacy settings
*
* \param session The session on which the INVITE will be sent
* \param tdata The outbound INVITE request
*/
static void caller_id_outgoing_request(struct ast_sip_session *session, pjsip_tx_data *tdata)
{
struct ast_party_id connected_id;
if (!session->channel) {
return;
}
connected_id = ast_channel_connected_effective_id(session->channel);
if (session->inv_session->state < PJSIP_INV_STATE_CONFIRMED &&
ast_strlen_zero(session->endpoint->fromuser) &&
(session->endpoint->id.trust_outbound ||
((connected_id.name.presentation & AST_PRES_RESTRICTION) == AST_PRES_ALLOWED &&
(connected_id.number.presentation & AST_PRES_RESTRICTION) == AST_PRES_ALLOWED))) {
/* Only change the From header on the initial outbound INVITE. Switching it
* mid-call might confuse some UAs.
*/
pjsip_fromto_hdr *from;
pjsip_dialog *dlg;
from = pjsip_msg_find_hdr(tdata->msg, PJSIP_H_FROM, tdata->msg->hdr.next);
dlg = session->inv_session->dlg;
modify_id_header(tdata->pool, from, &connected_id);
modify_id_header(dlg->pool, dlg->local.info, &connected_id);
}
add_id_headers(session, tdata, &connected_id);
}
/*!
* \internal
* \brief Add a Remote-Party-ID header to an outbound message
* \param tdata The message to add the header to
* \param id The identification information used to populate the header
*/
static void add_rpid_header(pjsip_tx_data *tdata, const struct ast_party_id *id)
{
static const pj_str_t pj_rpid_name = { "Remote-Party-ID", 15 };
pjsip_fromto_hdr *rpid_hdr;
pjsip_fromto_hdr *old_rpid;
if (!id->number.valid) {
return;
}
/* Since inv_session reuses responses, we have to make sure there's not already
* a P-Asserted-Identity present. If there is, we just modify the old one.
*/
old_rpid = pjsip_msg_find_hdr_by_name(tdata->msg, &pj_rpid_name, NULL);
if (old_rpid) {
modify_id_header(tdata->pool, old_rpid, id);
add_privacy_params(tdata, old_rpid, id);
return;
}
rpid_hdr = create_new_id_hdr(&pj_rpid_name, tdata, id);
if (!rpid_hdr) {
return;
}
add_privacy_params(tdata, rpid_hdr, id);
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *)rpid_hdr);
}
/*!
* \internal
* \brief Session supplement callback for outgoing INVITE requests
*
* For an initial INVITE request, we may change the From header to appropriately
* reflect the identity information. On all INVITEs (initial and reinvite) we may
* add other identity headers such as P-Asserted-Identity and Remote-Party-ID based
* on configuration and privacy settings
*
* \param session The session on which the INVITE will be sent
* \param tdata The outbound INVITE request
*/
static void caller_id_outgoing_request(struct ast_sip_session *session, pjsip_tx_data *tdata)
{
struct ast_party_id effective_id;
struct ast_party_id connected_id;
if (!session->channel) {
return;
}
/* Must do a deep copy unless we hold the channel lock the entire time. */
ast_party_id_init(&connected_id);
ast_channel_lock(session->channel);
effective_id = ast_channel_connected_effective_id(session->channel);
ast_party_id_copy(&connected_id, &effective_id);
ast_channel_unlock(session->channel);
if (session->inv_session->state < PJSIP_INV_STATE_CONFIRMED) {
/* Only change the From header on the initial outbound INVITE. Switching it
* mid-call might confuse some UAs.
*/
pjsip_fromto_hdr *from;
pjsip_dialog *dlg;
from = pjsip_msg_find_hdr(tdata->msg, PJSIP_H_FROM, tdata->msg->hdr.next);
dlg = session->inv_session->dlg;
if (ast_strlen_zero(session->endpoint->fromuser)
&& (session->endpoint->id.trust_outbound
|| (ast_party_id_presentation(&connected_id) & AST_PRES_RESTRICTION) == AST_PRES_ALLOWED)) {
modify_id_header(tdata->pool, from, &connected_id);
modify_id_header(dlg->pool, dlg->local.info, &connected_id);
}
ast_sip_add_usereqphone(session->endpoint, tdata->pool, from->uri);
ast_sip_add_usereqphone(session->endpoint, dlg->pool, dlg->local.info->uri);
}
add_id_headers(session, tdata, &connected_id);
ast_party_id_free(&connected_id);
}
/*!
* \internal
* \brief Add a P-Asserted-Identity header to an outbound message
* \param tdata The message to add the header to
* \param id The identification information used to populate the header
*/
static void add_pai_header(pjsip_tx_data *tdata, const struct ast_party_id *id)
{
static const pj_str_t pj_pai_name = { "P-Asserted-Identity", 19 };
pjsip_fromto_hdr *pai_hdr;
pjsip_fromto_hdr *old_pai;
/* Since inv_session reuses responses, we have to make sure there's not already
* a P-Asserted-Identity present. If there is, we just modify the old one.
*/
old_pai = pjsip_msg_find_hdr_by_name(tdata->msg, &pj_pai_name, NULL);
if (old_pai) {
/* If type is OTHER, then the existing header was most likely
* added by the PJSIP_HEADER dial plan function as a simple
* name/value pair. We can't pass this to modify_id_header because
* there are no virtual functions to get the uri. We could parse
* it into a pjsip_fromto_hdr but it isn't worth it since
* modify_id_header is just going to overwrite the name and number
* anyway. We'll just remove it from the header list instead
* and create a new one.
*/
if (old_pai->type == PJSIP_H_OTHER) {
pj_list_erase(old_pai);
} else {
modify_id_header(tdata->pool, old_pai, id);
add_privacy_header(tdata, id);
return;
}
}
pai_hdr = create_new_id_hdr(&pj_pai_name, tdata, id);
if (!pai_hdr) {
return;
}
add_privacy_header(tdata, id);
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *)pai_hdr);
}
/*!
* \internal
* \brief Add a P-Asserted-Identity header to an outbound message
* \param tdata The message to add the header to
* \param id The identification information used to populate the header
*/
static void add_pai_header(pjsip_tx_data *tdata, const struct ast_party_id *id)
{
static const pj_str_t pj_pai_name = { "P-Asserted-Identity", 19 };
pjsip_fromto_hdr *pai_hdr;
pjsip_fromto_hdr *old_pai;
/* Since inv_session reuses responses, we have to make sure there's not already
* a P-Asserted-Identity present. If there is, we just modify the old one.
*/
old_pai = pjsip_msg_find_hdr_by_name(tdata->msg, &pj_pai_name, NULL);
if (old_pai) {
modify_id_header(tdata->pool, old_pai, id);
add_privacy_header(tdata, id);
return;
}
pai_hdr = create_new_id_hdr(&pj_pai_name, tdata, id);
if (!pai_hdr) {
return;
}
add_privacy_header(tdata, id);
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *)pai_hdr);
}
