/*!
* \internal
* \brief Adds diversion header information to an outbound SIP message
*
* \param tdata The outbound message
* \param data The redirecting data used to fill parts of the diversion header
*/
static void add_diversion_header(pjsip_tx_data *tdata, struct ast_party_redirecting *data)
{
pjsip_fromto_hdr *hdr;
pjsip_name_addr *name_addr;
pjsip_sip_uri *uri;
pjsip_param *param;
pjsip_fromto_hdr *old_hdr;
const char *reason_str;
const char *quote_str;
char *reason_buf;
struct ast_party_id *id = &data->from;
pjsip_uri *base = PJSIP_MSG_FROM_HDR(tdata->msg)->uri;
if (!id->number.valid || ast_strlen_zero(id->number.str)) {
return;
}
hdr = pjsip_from_hdr_create(tdata->pool);
hdr->type = PJSIP_H_OTHER;
pj_strdup(tdata->pool, &hdr->name, &diversion_name);
hdr->sname = hdr->name;
name_addr = pjsip_uri_clone(tdata->pool, base);
uri = pjsip_uri_get_uri(name_addr->uri);
pj_strdup2(tdata->pool, &name_addr->display, id->name.str);
pj_strdup2(tdata->pool, &uri->user, id->number.str);
param = PJ_POOL_ALLOC_T(tdata->pool, pjsip_param);
param->name = pj_str("reason");
reason_str = reason_code_to_str(&data->reason);
/* Reason is either already quoted or it is a token to not need quotes added. */
quote_str = *reason_str == '\"' || sip_is_token(reason_str) ? "" : "\"";
reason_buf = pj_pool_alloc(tdata->pool, strlen(reason_str) + 3);
sprintf(reason_buf, "%s%s%s", quote_str, reason_str, quote_str);/* Safe */
param->value = pj_str(reason_buf);
pj_list_insert_before(&hdr->other_param, param);
hdr->uri = (pjsip_uri *) name_addr;
old_hdr = pjsip_msg_find_hdr_by_name(tdata->msg, &diversion_name, NULL);
if (old_hdr) {
pj_list_erase(old_hdr);
}
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *)hdr);
}
void SessionExpiresHelper::process_request(pjsip_msg* req,
pj_pool_t* pool,
SAS::TrailId trail)
{
// Session expires is only allowed on INVITE and UPDATE methods.
pjsip_method* method = &req->line.req.method;
if ((pjsip_method_cmp(method, pjsip_get_invite_method()) != 0) &&
(pjsip_method_cmp(method, &METHOD_UPDATE) != 0))
{
return;
}
// Store if this is the initial transaction on a dialog, and if the UAC
// supports session timers. We need both of these when processing the
// response.
_initial_request = (PJSIP_MSG_TO_HDR(req)->tag.slen == 0);
_uac_supports_timer = timer_supported(req);
// Find the session-expires header (if present) and the minimum
// session-expires. Note that the latter has a default value.
pjsip_session_expires_hdr* se_hdr = (pjsip_session_expires_hdr*)
pjsip_msg_find_hdr_by_name(req, &STR_SESSION_EXPIRES, NULL);
pjsip_min_se_hdr* min_se_hdr = (pjsip_min_se_hdr*)
pjsip_msg_find_hdr_by_name(req, &STR_MIN_SE, NULL);
SessionInterval min_se = (min_se_hdr != NULL) ?
min_se_hdr->expires :
DEFAULT_MIN_SE;
if ((se_hdr != NULL) && (se_hdr->expires < _target_se))
{
// The request already has a session expires that is below our target. We
// don't need to change the value.
TRC_DEBUG("Session expires already set to %d", se_hdr->expires);
}
else
{
// No pre-existing session expires, or the current value is greater than
// our target. Set it to as close to our target as possible, but don't set
// it below the min-SE.
if (se_hdr == NULL)
{
se_hdr = pjsip_session_expires_hdr_create(pool);
pjsip_msg_add_hdr(req, (pjsip_hdr*)se_hdr);
}
se_hdr->expires = std::max(_target_se, min_se);
TRC_DEBUG("Set session expires to %d", se_hdr->expires);
}
// Make a note of the session expires (we may need it when processing the
// response)
_se_on_req = se_hdr->expires;
}
/**
* Get Q.850 reason code from pjsip_event
*/
int get_q850_reason_code(pjsip_event *e) {
int cause = 0;
const pj_str_t HDR = { "Reason", 6 };
pj_bool_t is_q850 = PJ_FALSE;
if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) {
pjsip_generic_string_hdr *hdr =
(pjsip_generic_string_hdr*) pjsip_msg_find_hdr_by_name(
e->body.tsx_state.src.rdata->msg_info.msg, &HDR, NULL);
if (hdr) {
char *token = strtok(hdr->hvalue.ptr, ";");
while (token != NULL) {
if (!is_q850 && pj_ansi_stricmp(token, "Q.850") == 0) {
is_q850 = PJ_TRUE;
} else if (cause == 0) {
cause = lookup_q850_cause(token);
}
token = strtok(NULL, ";");
}
}
}
return (is_q850) ? cause : 0;
}
static void rfc3326_use_reason_header(struct ast_sip_session *session, struct pjsip_rx_data *rdata)
{
const pj_str_t str_reason = { "Reason", 6 };
pjsip_generic_string_hdr *header = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &str_reason, NULL);
char buf[20], *cause, *text;
int code;
if (!header) {
return;
}
ast_copy_pj_str(buf, &header->hvalue, sizeof(buf));
cause = ast_skip_blanks(buf);
if (strncasecmp(cause, "Q.850", 5) || !(cause = strstr(cause, "cause="))) {
return;
}
/* If text is present get rid of it */
if ((text = strstr(cause, ";"))) {
*text = '\0';
}
if (sscanf(cause, "cause=%30d", &code) != 1) {
return;
}
ast_channel_hangupcause_set(session->channel, code & 0x7f);
}
/*!
* \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 Set an ast_party_id structure based on data in a P-Asserted-Identity header
*
* This makes use of \ref set_id_from_hdr for setting name and number. It uses
* the contents of a Privacy header in order to set presentation information.
*
* \param rdata The incoming message
* \param[out] id The ID to set
* \retval 0 Successfully set the party ID
* \retval non-zero Could not set the party ID
*/
static int set_id_from_pai(pjsip_rx_data *rdata, struct ast_party_id *id)
{
static const pj_str_t pai_str = { "P-Asserted-Identity", 19 };
static const pj_str_t privacy_str = { "Privacy", 7 };
pjsip_fromto_hdr *pai_hdr = get_id_header(rdata, &pai_str);
pjsip_generic_string_hdr *privacy;
if (!pai_hdr) {
return -1;
}
set_id_from_hdr(pai_hdr, id);
if (!id->number.valid) {
return -1;
}
privacy = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &privacy_str, NULL);
if (privacy && !pj_stricmp2(&privacy->hvalue, "id")) {
id->number.presentation = AST_PRES_PROHIB_USER_NUMBER_NOT_SCREENED;
id->name.presentation = AST_PRES_PROHIB_USER_NUMBER_NOT_SCREENED;
} else {
id->number.presentation = AST_PRES_ALLOWED_USER_NUMBER_NOT_SCREENED;
id->name.presentation = AST_PRES_ALLOWED_USER_NUMBER_NOT_SCREENED;
}
return 0;
}
/**
* VoX Mobile :: negative SIP response handler
*/
int get_vox_error_info(pjsip_event *e)
{
int cause = 0;
const pj_str_t HDR = { "Error-Info", 10 };
const pj_str_t BLOCKED_PSTN = { "PSTN not allowed", 16 };
const pj_str_t BLOCKED_DESTINATION = { "Blocked destination", 19 };
if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) {
pjsip_generic_string_hdr *hdr = (pjsip_generic_string_hdr*)pjsip_msg_find_hdr_by_name(
e->body.tsx_state.src.rdata->msg_info.msg,
&HDR,
NULL);
if (hdr) {
if (pj_strcmp(&hdr->hvalue, &BLOCKED_PSTN) == 0)
cause = 403;
else if (pj_strcmp(&hdr->hvalue, &BLOCKED_DESTINATION) == 0)
cause = 580;
else {
cause = (int)pj_strtoul(&hdr->hvalue);
}
}
}
return cause;
}
/**
* Get TAG reason code from pjsip_event
*/
int get_reason_code(pjsip_event *e, char* tag, int (*code_parser)(const char*)) {
int code = 0;
const pj_str_t HDR = { "Reason", 6 };
pj_bool_t has_tag = PJ_FALSE;
if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) {
pjsip_generic_string_hdr *hdr =
(pjsip_generic_string_hdr*) pjsip_msg_find_hdr_by_name(
e->body.tsx_state.src.rdata->msg_info.msg, &HDR, NULL);
// TODO : check if the header should not be parsed here? -- I don't see how it could work without parsing.
if (hdr) {
char *reason_header = strdup(hdr->hvalue.ptr);
char *token = strtok(reason_header, ";");
while (token != NULL) {
if (!has_tag && pj_ansi_stricmp(token, tag) == 0) {
has_tag = PJ_TRUE;
} else if (code == 0) {
code = code_parser(token);
}
token = strtok(NULL, ";");
}
free(reason_header);
}
}
return (has_tag) ? code : 0;
}
PJ_DECL(pj_str_t) get_rx_data_header(const pj_str_t name, pjsip_rx_data* data){
pjsip_generic_string_hdr *hdr =
(pjsip_generic_string_hdr*) pjsip_msg_find_hdr_by_name(data->msg_info.msg, &name, NULL);
if (hdr && hdr->hvalue.ptr) {
return hdr->hvalue;
}
return pj_str("");
}
/// Remove all existing copies of a header. The header to delete must
/// not be one that has an abbreviation.
void PJUtils::remove_hdr(pjsip_msg* msg,
const pj_str_t* name)
{
while (pjsip_hdr* hdr = (pjsip_hdr*)pjsip_msg_find_hdr_by_name(msg, name, NULL))
{
pj_list_erase(hdr);
}
}
static int has_call_feature(pjsip_rx_data *rdata)
{
static const pj_str_t call_feature_str = { "X-Digium-Call-Feature", 21 };
pjsip_generic_string_hdr *hdr = pjsip_msg_find_hdr_by_name(
rdata->msg_info.msg, &call_feature_str, NULL);
return hdr && !pj_stricmp2(&hdr->hvalue, SEND_TO_VM_HEADER_VALUE);
}
/// Determine the served user for originating requests.
pjsip_uri* PJUtils::orig_served_user(pjsip_msg* msg)
{
// The served user for originating requests is determined from the
// P-Served-User or P-Asserted-Identity headers. For extra compatibility,
// we will also look at the From header if neither of the IMS headers is
// present.
pjsip_uri* uri = NULL;
pjsip_routing_hdr* served_user = (pjsip_routing_hdr*)
pjsip_msg_find_hdr_by_name(msg, &STR_P_SERVED_USER, NULL);
if (served_user != NULL)
{
uri = (pjsip_uri*)pjsip_uri_get_uri(&served_user->name_addr);
LOG_DEBUG("Served user from P-Served-User header");
}
if (uri == NULL)
{
// No P-Served-User header present, so check for P-Asserted-Identity
// header.
pjsip_routing_hdr* asserted_id = (pjsip_routing_hdr*)
pjsip_msg_find_hdr_by_name(msg, &STR_P_ASSERTED_IDENTITY, NULL);
if (asserted_id != NULL)
{
uri = (pjsip_uri*)pjsip_uri_get_uri(&asserted_id->name_addr);
LOG_DEBUG("Served user from P-Asserted-Identity header");
}
}
if (uri == NULL)
{
// Neither IMS header is present, so use the From header. This isn't
// strictly speaking IMS compliant.
LOG_DEBUG("From header %p", PJSIP_MSG_FROM_HDR(msg));
uri = (pjsip_uri*)pjsip_uri_get_uri(PJSIP_MSG_FROM_HDR(msg)->uri);
LOG_DEBUG("Served user from From header (%p)", uri);
}
return uri;
}
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;
}
void PJUtils::clone_header(const pj_str_t* hdr_name, pjsip_msg* old_msg, pjsip_msg* new_msg, pj_pool_t* pool)
{
pjsip_hdr* original_hdr = NULL;
pjsip_hdr* last_hdr = NULL;
while ((original_hdr = (pjsip_hdr*)pjsip_msg_find_hdr_by_name(old_msg, hdr_name, original_hdr)) && (last_hdr != original_hdr))
{
LOG_INFO("Cloning header! %ld", (long int)original_hdr);
pjsip_hdr* new_hdr = (pjsip_hdr*)pjsip_hdr_clone(pool, original_hdr);
pjsip_msg_add_hdr(new_msg, new_hdr);
last_hdr = original_hdr;
}
}
/// Delete all existing copies of a header. The header to delete must
/// not be one that has an abbreviation.
void PJUtils::delete_header(pjsip_msg* msg,
const pj_str_t* name)
{
while (1)
{
pjsip_hdr* hdr = (pjsip_hdr*)pjsip_msg_find_hdr_by_name(msg, name, NULL);
if (hdr)
{
pj_list_erase(hdr);
}
else
{
break;
}
}
}
static pjsip_fromto_hdr *get_diversion_header(pjsip_rx_data *rdata)
{
static const pj_str_t from_name = { "From", 4 };
pjsip_generic_string_hdr *hdr;
pj_str_t value;
int size;
if (!(hdr = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &diversion_name, NULL))) {
return NULL;
}
pj_strdup_with_null(rdata->tp_info.pool, &value, &hdr->hvalue);
/* parse as a fromto header */
return pjsip_parse_hdr(rdata->tp_info.pool, &from_name, value.ptr,
pj_strlen(&value), &size);
}
/*!
* \internal
* \brief Add a Privacy header to an outbound message
*
* When sending a P-Asserted-Identity header, if privacy is requested, then we
* will need to indicate such by adding a Privacy header. Similarly, if no
* privacy is requested, and a Privacy header already exists on the message,
* then the old Privacy header should be removed.
*
* \param tdata The outbound message to add the Privacy header to
* \param id The id information used to determine privacy
*/
static void add_privacy_header(pjsip_tx_data *tdata, const struct ast_party_id *id)
{
static const pj_str_t pj_privacy_name = { "Privacy", 7 };
static const pj_str_t pj_privacy_value = { "id", 2 };
pjsip_hdr *old_privacy;
old_privacy = pjsip_msg_find_hdr_by_name(tdata->msg, &pj_privacy_name, NULL);
if ((ast_party_id_presentation(id) & AST_PRES_RESTRICTION) == AST_PRES_ALLOWED) {
if (old_privacy) {
pj_list_erase(old_privacy);
}
} else if (!old_privacy) {
pjsip_generic_string_hdr *privacy_hdr = pjsip_generic_string_hdr_create(
tdata->pool, &pj_privacy_name, &pj_privacy_value);
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *)privacy_hdr);
}
}
std::string
fetchHeaderValue(pjsip_msg *msg, const std::string &field)
{
pj_str_t name = pj_str((char*) field.c_str());
pjsip_generic_string_hdr *hdr = static_cast<pjsip_generic_string_hdr*>(pjsip_msg_find_hdr_by_name(msg, &name, NULL));
if (!hdr)
return "";
std::string value(hdr->hvalue.ptr, hdr->hvalue.slen);
size_t pos = value.find("\n");
if (pos != std::string::npos)
return value.substr(0, pos);
else
return "";
}
/// Delete all existing copies of a header and replace with a new one.
void PJUtils::set_generic_header(pjsip_tx_data* tdata,
const pj_str_t* name,
const pj_str_t* value)
{
while (1)
{
pjsip_hdr* hdr = (pjsip_hdr*)pjsip_msg_find_hdr_by_name(tdata->msg, name, NULL);
if (hdr)
{
pj_list_erase(hdr);
}
else
{
break;
}
}
pjsip_generic_string_hdr* new_hdr = pjsip_generic_string_hdr_create(tdata->pool, name, value);
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)new_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(const struct ast_sip_session *session, 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 *base;
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 {
ast_sip_modify_id_header(tdata->pool, old_pai, id);
add_privacy_header(tdata, id);
return;
}
}
base = tdata->msg->type == PJSIP_REQUEST_MSG ? session->saved_from_hdr :
PJSIP_MSG_TO_HDR(tdata->msg);
pai_hdr = create_new_id_hdr(&pj_pai_name, base, tdata, id);
if (!pai_hdr) {
return;
}
add_privacy_header(tdata, id);
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *)pai_hdr);
}
/*!
* \internal
* \brief Adds diversion header information to an outbound SIP message
*
* \param tdata The outbound message
* \param data The redirecting data used to fill parts of the diversion header
*/
static void add_diversion_header(pjsip_tx_data *tdata, struct ast_party_redirecting *data)
{
pjsip_fromto_hdr *hdr;
pjsip_name_addr *name_addr;
pjsip_sip_uri *uri;
pjsip_param *param;
pjsip_fromto_hdr *old_hdr;
struct ast_party_id *id = &data->from;
pjsip_uri *base = PJSIP_MSG_FROM_HDR(tdata->msg)->uri;
if (!id->number.valid || ast_strlen_zero(id->number.str)) {
return;
}
hdr = pjsip_from_hdr_create(tdata->pool);
hdr->type = PJSIP_H_OTHER;
pj_strdup(tdata->pool, &hdr->name, &diversion_name);
hdr->sname.slen = 0;
name_addr = pjsip_uri_clone(tdata->pool, base);
uri = pjsip_uri_get_uri(name_addr->uri);
pj_strdup2(tdata->pool, &name_addr->display, id->name.str);
pj_strdup2(tdata->pool, &uri->user, id->number.str);
param = PJ_POOL_ALLOC_T(tdata->pool, pjsip_param);
param->name = pj_str("reason");
param->value = pj_str((char*)reason_code_to_str(&data->reason));
pj_list_insert_before(&hdr->other_param, param);
hdr->uri = (pjsip_uri *) name_addr;
old_hdr = pjsip_msg_find_hdr_by_name(tdata->msg, &diversion_name, NULL);
if (old_hdr) {
pj_list_erase(old_hdr);
}
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *)hdr);
}
static void diversion_incoming_response(struct ast_sip_session *session, pjsip_rx_data *rdata)
{
static const pj_str_t contact_name = { "Contact", 7 };
pjsip_status_line status = rdata->msg_info.msg->line.status;
pjsip_fromto_hdr *div_hdr;
pjsip_contact_hdr *contact_hdr;
if ((status.code != 302) && (status.code != 181)) {
return;
}
/* use the diversion header info if there is one. if not one then use the
session caller id info. if that doesn't exist use info from the To hdr*/
if (!(div_hdr = get_diversion_header(rdata)) && !session->id.number.valid) {
div_hdr = PJSIP_MSG_TO_HDR(rdata->msg_info.msg);
}
contact_hdr = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &contact_name, NULL);
set_redirecting(session, div_hdr, contact_hdr ? (pjsip_name_addr*)contact_hdr->uri :
(pjsip_name_addr*)PJSIP_MSG_FROM_HDR(rdata->msg_info.msg)->uri);
}
/// Add P-Charging headers on incoming out-of-dialog/dialog initiating requests
static void proxy_add_p_charging_header(pjsip_tx_data *tdata)
{
LOG_DEBUG("Add P-Charging headers");
std::string cdf_domain = PJUtils::pj_str_to_string(&stack_data.cdf_domain);
if (cdf_domain != "")
{
// Add the P-Charging-Function-Addresses. The value of the CDF is passed in
// as a parameter in bono - if this isn't present then don't set these
// headers.
pjsip_p_c_f_a_hdr* p_c_f_a = pjsip_p_c_f_a_hdr_create(tdata->pool);
pjsip_param* new_param = (pjsip_param*) pj_pool_alloc(tdata->pool, sizeof(pjsip_param));
new_param->name = STR_CCF;
new_param->value = stack_data.cdf_domain;
pj_list_insert_before(&p_c_f_a->ccf, new_param);
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)p_c_f_a);
// Add the P-Charging-Vector Id. The icid-value is the Call-ID, and the
// icid-generated-at is the bono hostname - it must be unique to the node that
// generates it.
pjsip_cid_hdr* call_id = (pjsip_cid_hdr*)pjsip_msg_find_hdr_by_name(tdata->msg,
&STR_CALL_ID,
NULL);
std::string c_id = PJUtils::pj_str_to_string(&call_id->id);
c_id.erase(std::remove(c_id.begin(), c_id.end(), '@'), c_id.end());
c_id.erase(std::remove(c_id.begin(), c_id.end(), '"'), c_id.end());
pjsip_p_c_v_hdr* p_c_v = pjsip_p_c_v_hdr_create(tdata->pool);
pj_strdup2(tdata->pool, &p_c_v->icid, c_id.c_str());
p_c_v->icid_gen_addr = stack_data.public_host;
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)p_c_v);
}
}
/*!
* \internal
* \brief Get a P-Asserted-Identity or Remote-Party-ID header from an incoming message
*
* This function will parse the header as if it were a From header. This allows for us
* to easily manipulate the URI, as well as add, modify, or remove parameters from the
* header
*
* \param rdata The incoming message
* \param header_name The name of the ID header to find
* \retval NULL No ID header present or unable to parse ID header
* \retval non-NULL The parsed ID header
*/
static pjsip_fromto_hdr *get_id_header(pjsip_rx_data *rdata, const pj_str_t *header_name)
{
static const pj_str_t from = { "From", 4 };
pj_str_t header_content;
pjsip_fromto_hdr *parsed_hdr;
pjsip_generic_string_hdr *ident = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg,
header_name, NULL);
int parsed_len;
if (!ident) {
return NULL;
}
pj_strdup_with_null(rdata->tp_info.pool, &header_content, &ident->hvalue);
parsed_hdr = pjsip_parse_hdr(rdata->tp_info.pool, &from, header_content.ptr,
pj_strlen(&header_content), &parsed_len);
if (!parsed_hdr) {
return NULL;
}
return parsed_hdr;
}
/*!
* \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;
/* 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) {
/* 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_rpid->type == PJSIP_H_OTHER) {
pj_list_erase(old_rpid);
} else {
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 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);
}
//////////////////////////////////////////////////////////////////////////
// Request handler to receive out-of-dialog NOTIFY (from Asterisk)
static pj_bool_t on_rx_request(pjsip_rx_data *rdata)
{
if (strstr(pj_strbuf(&rdata->msg_info.msg->line.req.method.name),
"NOTIFY"))
{
pjsip_generic_string_hdr * hdr;
pj_str_t did_str = pj_str("Event");
hdr = (pjsip_generic_string_hdr*) pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &did_str, NULL);
if (!hdr) return false;
// We have an event header, now determine if it's contents are "message-summary"
if (pj_strcmp2(&hdr->hvalue, "message-summary")) return false;
pjsip_msg_body * body_p = rdata->msg_info.msg->body;
wchar_t* buf = (wchar_t*)pj_pool_alloc(app_config.pool, body_p->len);
buf = PJ_STRING_TO_NATIVE((char*)body_p->data, buf, body_p->len);
// Process body message as desired...
if (strncmp((char*)body_p->data, "Messages-Waiting: yes", body_p->len) != 0)
{
if (cb_mwi != 0) cb_mwi(1, buf);
}
else
{
if (cb_mwi != 0) cb_mwi(0, buf);
}
PJ_LOG(3,(THIS_FILE,"MWI message: %s", buf));
}
pjsip_endpt_respond_stateless(pjsip_ua_get_endpt(pjsip_ua_instance()),
rdata, 200, NULL,
NULL, NULL);
return PJ_TRUE;
}
// Reject request unless it's a SUBSCRIBE targeted at the home domain / this node.
pj_bool_t subscription_on_rx_request(pjsip_rx_data *rdata)
{
SAS::TrailId trail = get_trail(rdata);
if (rdata->tp_info.transport->local_name.port != stack_data.scscf_port)
{
// Not an S-CSCF, so don't handle SUBSCRIBEs.
return PJ_FALSE; // LCOV_EXCL_LINE
}
if (pjsip_method_cmp(&rdata->msg_info.msg->line.req.method, pjsip_get_subscribe_method()))
{
// This isn't a SUBSCRIBE, so this module can't process it.
return PJ_FALSE;
}
if (!((PJUtils::is_home_domain(rdata->msg_info.msg->line.req.uri) ||
(PJUtils::is_uri_local(rdata->msg_info.msg->line.req.uri))) &&
PJUtils::check_route_headers(rdata)))
{
LOG_DEBUG("Rejecting subscription request not targeted at this domain or node");
SAS::Event event(trail, SASEvent::SUBSCRIBE_FAILED_EARLY_DOMAIN, 0);
SAS::report_event(event);
return PJ_FALSE;
}
// SUBSCRIBE request targeted at the home domain or specifically at this node. Check
// whether it should be processed by this module or passed up to an AS.
pjsip_msg *msg = rdata->msg_info.msg;
// A valid subscription must have the Event header set to "reg". This is case-sensitive
pj_str_t event_name = pj_str("Event");
pjsip_event_hdr* event = (pjsip_event_hdr*)pjsip_msg_find_hdr_by_name(msg, &event_name, NULL);
if (!event || (PJUtils::pj_str_to_string(&event->event_type) != "reg"))
{
// The Event header is missing or doesn't match "reg"
LOG_DEBUG("Rejecting subscription request with invalid event header");
SAS::Event sas_event(trail, SASEvent::SUBSCRIBE_FAILED_EARLY_EVENT, 0);
if (event)
{
char event_hdr_str[256];
memset(event_hdr_str, 0, 256);
pjsip_hdr_print_on(event, event_hdr_str, 255);
sas_event.add_var_param(event_hdr_str);
}
SAS::report_event(sas_event);
return PJ_FALSE;
}
// Accept header may be present - if so must include the application/reginfo+xml
pjsip_accept_hdr* accept = (pjsip_accept_hdr*)pjsip_msg_find_hdr(msg, PJSIP_H_ACCEPT, NULL);
if (accept)
{
bool found = false;
pj_str_t reginfo = pj_str("application/reginfo+xml");
for (uint32_t i = 0; i < accept->count; i++)
{
if (!pj_strcmp(accept->values + i, ®info))
{
found = true;
}
}
if (!found)
{
// The Accept header (if it exists) doesn't contain "application/reginfo+xml"
LOG_DEBUG("Rejecting subscription request with invalid accept header");
char accept_hdr_str[256];
memset(accept_hdr_str, 0, 256);
pjsip_hdr_print_on(accept, accept_hdr_str, 255);
SAS::Event event(trail, SASEvent::SUBSCRIBE_FAILED_EARLY_ACCEPT, 0);
event.add_var_param(accept_hdr_str);
SAS::report_event(event);
return PJ_FALSE;
}
}
process_subscription_request(rdata);
return PJ_TRUE;
}
void process_register_request(pjsip_rx_data* rdata)
{
pj_status_t status;
int st_code = PJSIP_SC_OK;
// Get the URI from the To header and check it is a SIP or SIPS URI.
pjsip_uri* uri = (pjsip_uri*)pjsip_uri_get_uri(rdata->msg_info.to->uri);
if (!PJSIP_URI_SCHEME_IS_SIP(uri))
{
// Reject a non-SIP/SIPS URI with 404 Not Found (RFC3261 isn't clear
// whether 404 is the right status code - it says 404 should be used if
// the AoR isn't valid for the domain in the RequestURI).
// LCOV_EXCL_START
LOG_ERROR("Rejecting register request using non SIP URI");
PJUtils::respond_stateless(stack_data.endpt,
rdata,
PJSIP_SC_NOT_FOUND,
NULL,
NULL,
NULL);
return;
// LCOV_EXCL_STOP
}
// Canonicalize the public ID from the URI in the To header.
std::string public_id = PJUtils::aor_from_uri((pjsip_sip_uri*)uri);
LOG_DEBUG("Process REGISTER for public ID %s", public_id.c_str());
// Get the call identifier and the cseq number from the respective headers.
std::string cid = PJUtils::pj_str_to_string((const pj_str_t*)&rdata->msg_info.cid->id);;
int cseq = rdata->msg_info.cseq->cseq;
pjsip_msg *msg = rdata->msg_info.msg;
// Add SAS markers to the trail attached to the message so the trail
// becomes searchable.
SAS::TrailId trail = get_trail(rdata);
LOG_DEBUG("Report SAS start marker - trail (%llx)", trail);
SAS::Marker start_marker(trail, SASMarker::INIT_TIME, 1u);
SAS::report_marker(start_marker);
SAS::Marker calling_dn(trail, SASMarker::CALLING_DN, 1u);
pjsip_sip_uri* calling_uri = (pjsip_sip_uri*)pjsip_uri_get_uri(rdata->msg_info.to->uri);
calling_dn.add_var_param(calling_uri->user.slen, calling_uri->user.ptr);
SAS::report_marker(calling_dn);
SAS::Marker cid_marker(trail, SASMarker::SIP_CALL_ID, 1u);
cid_marker.add_var_param(rdata->msg_info.cid->id.slen, rdata->msg_info.cid->id.ptr);
SAS::report_marker(cid_marker, SAS::Marker::Scope::TrailGroup);
// Query the HSS for the associated URIs.
// This should really include the private ID, but we don't yet have a
// homestead API for it. Homestead won't be able to query a third-party HSS
// without the private ID.
Json::Value* uris = hss->get_associated_uris(public_id, trail);
if ((uris == NULL) ||
(uris->size() == 0))
{
// We failed to get the list of associated URIs. This indicates that the
// HSS is unavailable, the public identity doesn't exist or the public
// identity doesn't belong to the private identity. Reject with 403.
LOG_ERROR("Rejecting register request with invalid public/private identity");
PJUtils::respond_stateless(stack_data.endpt,
rdata,
PJSIP_SC_FORBIDDEN,
NULL,
NULL,
NULL);
return;
}
// Determine the AOR from the first entry in the uris array.
std::string aor = uris->get((Json::ArrayIndex)0, Json::Value::null).asString();
LOG_DEBUG("REGISTER for public ID %s uses AOR %s", public_id.c_str(), aor.c_str());
// Find the expire headers in the message.
pjsip_expires_hdr* expires = (pjsip_expires_hdr*)pjsip_msg_find_hdr(msg, PJSIP_H_EXPIRES, NULL);
// Get the system time in seconds for calculating absolute expiry times.
int now = time(NULL);
int expiry = 0;
// The registration service uses optimistic locking to avoid concurrent
// updates to the same AoR conflicting. This means we have to loop
// reading, updating and writing the AoR until the write is successful.
RegData::AoR* aor_data = NULL;
do
{
if (aor_data != NULL)
{
delete aor_data; // LCOV_EXCL_LINE - Single-threaded tests mean we'll
// always pass CAS.
}
// Find the current bindings for the AoR.
aor_data = store->get_aor_data(aor);
LOG_DEBUG("Retrieved AoR data %p", aor_data);
if (aor_data == NULL)
{
// Failed to get data for the AoR because there is no connection
// to the store. Reject the register with a 500 response.
// LCOV_EXCL_START - local store (used in testing) never fails
LOG_ERROR("Failed to get AoR binding for %s from store", aor.c_str());
st_code = PJSIP_SC_INTERNAL_SERVER_ERROR;
break;
// LCOV_EXCL_STOP
}
// Now loop through all the contacts. If there are multiple contacts in
// the contact header in the SIP message, pjsip parses them to separate
// contact header structures.
pjsip_contact_hdr* contact = (pjsip_contact_hdr*)pjsip_msg_find_hdr(msg, PJSIP_H_CONTACT, NULL);
while (contact != NULL)
{
if (contact->star)
{
// Wildcard contact, which can only be used to clear all bindings for
// the AoR.
aor_data->clear();
break;
}
pjsip_uri* uri = (contact->uri != NULL) ?
(pjsip_uri*)pjsip_uri_get_uri(contact->uri) :
NULL;
if ((uri != NULL) &&
(PJSIP_URI_SCHEME_IS_SIP(uri)))
{
// The binding identifier is based on the +sip.instance parameter if
// it is present. If not the contact URI is used instead.
std::string contact_uri = PJUtils::uri_to_string(PJSIP_URI_IN_CONTACT_HDR, uri);
std::string binding_id = get_binding_id(contact);
if (binding_id == "")
{
binding_id = contact_uri;
}
LOG_DEBUG(". Binding identifier for contact = %s", binding_id.c_str());
// Find the appropriate binding in the bindings list for this AoR.
RegData::AoR::Binding* binding = aor_data->get_binding(binding_id);
if ((cid != binding->_cid) ||
(cseq > binding->_cseq))
{
// Either this is a new binding, has come from a restarted device, or
// is an update to an existing binding.
binding->_uri = contact_uri;
// TODO Examine Via header to see if we're the first hop
// TODO Only if we're not the first hop, check that the top path header has "ob" parameter
// Get the Path headers, if present. RFC 3327 allows us the option of
// rejecting a request with a Path header if there is no corresponding
// "path" entry in the Supported header but we don't do so on the assumption
// that the edge proxy knows what it's doing.
binding->_path_headers.clear();
pjsip_generic_string_hdr* path_hdr =
(pjsip_generic_string_hdr*)pjsip_msg_find_hdr_by_name(msg, &STR_PATH, NULL);
while (path_hdr)
{
std::string path = PJUtils::pj_str_to_string(&path_hdr->hvalue);
LOG_DEBUG("Path header %s", path.c_str());
// Extract all the paths from this header.
Utils::split_string(path, ',', binding->_path_headers, 0, true);
// Look for the next header.
path_hdr = (pjsip_generic_string_hdr*)pjsip_msg_find_hdr_by_name(msg, &STR_PATH, path_hdr->next);
}
binding->_cid = cid;
binding->_cseq = cseq;
binding->_priority = contact->q1000;
binding->_params.clear();
pjsip_param* p = contact->other_param.next;
while ((p != NULL) && (p != &contact->other_param))
{
std::string pname = PJUtils::pj_str_to_string(&p->name);
std::string pvalue = PJUtils::pj_str_to_string(&p->value);
binding->_params.push_back(std::make_pair(pname, pvalue));
p = p->next;
}
// Calculate the expiry period for the updated binding.
expiry = (contact->expires != -1) ? contact->expires :
(expires != NULL) ? expires->ivalue : 300;
if (expiry > 300)
{
// Expiry is too long, set it to the maximum of 300 seconds (5 minutes).
expiry = 300;
}
binding->_expires = now + expiry;
if (analytics != NULL)
{
// Generate an analytics log for this binding update.
analytics->registration(aor, binding_id, contact_uri, expiry);
}
}
}
contact = (pjsip_contact_hdr*)pjsip_msg_find_hdr(msg, PJSIP_H_CONTACT, contact->next);
}
}
while (!store->set_aor_data(aor, aor_data));
if (aor_data != NULL)
{
// Log the bindings.
log_bindings(aor, aor_data);
}
// Build and send the reply.
pjsip_tx_data* tdata;
status = PJUtils::create_response(stack_data.endpt, rdata, st_code, NULL, &tdata);
if (status != PJ_SUCCESS)
{
// LCOV_EXCL_START - don't know how to get PJSIP to fail to create a response
LOG_ERROR("Error building REGISTER %d response %s", st_code,
PJUtils::pj_status_to_string(status).c_str());
PJUtils::respond_stateless(stack_data.endpt,
rdata,
PJSIP_SC_INTERNAL_SERVER_ERROR,
NULL,
NULL,
NULL);
delete aor_data;
return;
// LCOV_EXCL_STOP
}
if (st_code != PJSIP_SC_OK)
{
// LCOV_EXCL_START - we only reject REGISTER if something goes wrong, and
// we aren't covering any of those paths so we can't hit this either
status = pjsip_endpt_send_response2(stack_data.endpt, rdata, tdata, NULL, NULL);
delete aor_data;
return;
// LCOV_EXCL_STOP
}
// Add supported and require headers for RFC5626.
pjsip_generic_string_hdr* gen_hdr;
gen_hdr = pjsip_generic_string_hdr_create(tdata->pool,
&STR_SUPPORTED,
&STR_OUTBOUND);
if (gen_hdr == NULL)
{
// LCOV_EXCL_START - can't see how this could ever happen
LOG_ERROR("Failed to add RFC 5626 headers");
tdata->msg->line.status.code = PJSIP_SC_INTERNAL_SERVER_ERROR;
status = pjsip_endpt_send_response2(stack_data.endpt, rdata, tdata, NULL, NULL);
delete aor_data;
return;
// LCOV_EXCL_STOP
}
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)gen_hdr);
// Add contact headers for all active bindings.
for (RegData::AoR::Bindings::const_iterator i = aor_data->bindings().begin();
i != aor_data->bindings().end();
++i)
{
RegData::AoR::Binding* binding = i->second;
if (binding->_expires > now)
{
// The binding hasn't expired.
pjsip_uri* uri = PJUtils::uri_from_string(binding->_uri, tdata->pool);
if (uri != NULL)
{
// Contact URI is well formed, so include this in the response.
pjsip_contact_hdr* contact = pjsip_contact_hdr_create(tdata->pool);
contact->star = 0;
contact->uri = uri;
contact->q1000 = binding->_priority;
contact->expires = binding->_expires - now;
pj_list_init(&contact->other_param);
for (std::list<std::pair<std::string, std::string> >::iterator j = binding->_params.begin();
j != binding->_params.end();
++j)
{
pjsip_param *new_param = PJ_POOL_ALLOC_T(tdata->pool, pjsip_param);
pj_strdup2(tdata->pool, &new_param->name, j->first.c_str());
pj_strdup2(tdata->pool, &new_param->value, j->second.c_str());
pj_list_insert_before(&contact->other_param, new_param);
}
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)contact);
}
else
{
// Contact URI is malformed. Log an error, but otherwise don't try and
// fix it.
// LCOV_EXCL_START hard to hit - needs bad data in the store
LOG_WARNING("Badly formed contact URI %s for address of record %s",
binding->_uri.c_str(), aor.c_str());
// LCOV_EXCL_STOP
}
}
}
// Deal with path header related fields in the response.
pjsip_generic_string_hdr* path_hdr =
(pjsip_generic_string_hdr*)pjsip_msg_find_hdr_by_name(msg, &STR_PATH, NULL);
if ((path_hdr != NULL) &&
(!aor_data->bindings().empty()))
{
// We have bindings with path headers so we must require outbound.
pjsip_require_hdr* require_hdr = pjsip_require_hdr_create(tdata->pool);
require_hdr->count = 1;
require_hdr->values[0] = STR_OUTBOUND;
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)require_hdr);
}
// Echo back any Path headers as per RFC 3327, section 5.3. We take these
// from the request as they may not exist in the bindings any more if the
// bindings have expired.
while (path_hdr)
{
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)pjsip_hdr_clone(tdata->pool, path_hdr));
path_hdr = (pjsip_generic_string_hdr*)pjsip_msg_find_hdr_by_name(msg, &STR_PATH, path_hdr->next);
}
// Construct a Service-Route header pointing at the sprout cluster. We don't
// care which sprout handles the subsequent requests as they all have access
// to all subscriber information.
pjsip_sip_uri* service_route_uri = pjsip_sip_uri_create(tdata->pool, false);
pj_strdup(tdata->pool,
&service_route_uri->host,
&stack_data.sprout_cluster_domain);
service_route_uri->port = stack_data.trusted_port;
service_route_uri->transport_param = pj_str("TCP");
service_route_uri->lr_param = 1;
pjsip_route_hdr* service_route = pjsip_route_hdr_create(tdata->pool);
service_route->name = STR_SERVICE_ROUTE;
service_route->sname = pj_str("");
service_route->name_addr.uri = (pjsip_uri*)service_route_uri;
pjsip_msg_insert_first_hdr(tdata->msg, (pjsip_hdr*)service_route);
// Add P-Associated-URI headers for all of the associated URIs.
static const pj_str_t p_associated_uri_hdr_name = pj_str("P-Associated-URI");
for (Json::ValueIterator it = uris->begin(); it != uris->end(); it++)
{
pj_str_t associated_uri = {(char*)(*it).asCString(), strlen((*it).asCString())};
pjsip_hdr* associated_uri_hdr =
(pjsip_hdr*)pjsip_generic_string_hdr_create(tdata->pool,
&p_associated_uri_hdr_name,
&associated_uri);
pjsip_msg_add_hdr(tdata->msg, associated_uri_hdr);
}
delete uris;
// Send the response, but prevent the transmitted data from being freed, as we may need to inform the
// ASes of the 200 OK response we sent.
pjsip_tx_data_add_ref(tdata);
status = pjsip_endpt_send_response2(stack_data.endpt, rdata, tdata, NULL, NULL);
RegistrationUtils::register_with_application_servers(ifchandler, store, rdata, tdata, "");
// Now we can free the tdata.
pjsip_tx_data_dec_ref(tdata);
LOG_DEBUG("Report SAS end marker - trail (%llx)", trail);
SAS::Marker end_marker(trail, SASMarker::END_TIME, 1u);
SAS::report_marker(end_marker);
delete aor_data;
}
void SessionExpiresHelper::process_response(pjsip_msg* rsp,
pj_pool_t* pool,
SAS::TrailId trail)
{
// Session expires is only allowed on INVITE and UPDATE methods.
pjsip_method* method = &PJSIP_MSG_CSEQ_HDR(rsp)->method;
if ((pjsip_method_cmp(method, pjsip_get_invite_method()) != 0) &&
(pjsip_method_cmp(method, &METHOD_UPDATE) != 0))
{
return;
}
// We only need to process successful final responses.
if (!PJSIP_IS_STATUS_IN_CLASS(rsp->line.status.code, 200))
{
return;
}
pjsip_session_expires_hdr* se_hdr = (pjsip_session_expires_hdr*)
pjsip_msg_find_hdr_by_name(rsp, &STR_SESSION_EXPIRES, NULL);
if (se_hdr == NULL)
{
// There is no session-expires header. This means we are most downstream
// device that supports session timers, and in particular the UAS does not
// support them.
//
// If the UAC does not support session timers, there's nothing more we can
// do - session timers will not be used for this dialog.
//
// If the UAC *does* support session timers, re-add a session-expires header
// that instructs the UAC to be the refresher.
if (_uac_supports_timer)
{
se_hdr = pjsip_session_expires_hdr_create(pool);
pjsip_msg_add_hdr(rsp, (pjsip_hdr*)se_hdr);
se_hdr->expires = _se_on_req;
se_hdr->refresher = SESSION_REFRESHER_UAC;
// Also update (or add) the require header to force the UAC to do session
// refreshes.
pjsip_require_hdr* require_hdr = (pjsip_require_hdr*)
pjsip_msg_find_hdr(rsp, PJSIP_H_REQUIRE, NULL);
if (require_hdr == NULL)
{
require_hdr = (pjsip_require_hdr*)pjsip_require_hdr_create(pool);
pjsip_msg_add_hdr(rsp, (pjsip_hdr*)require_hdr);
}
pj_strdup(pool, &require_hdr->values[require_hdr->count], &STR_TIMER);
require_hdr->count++;
}
}
if (_initial_request)
{
if (se_hdr == NULL)
{
SAS::Event event(trail, SASEvent::SESS_TIMER_NO_UA_SUPPORT, 0);
SAS::report_event(event);
}
else if (se_hdr->expires > _target_se)
{
SAS::Event event(trail, SASEvent::SESS_TIMER_INTERVAL_TOO_LONG, 0);
event.add_static_param(_target_se);
event.add_static_param(se_hdr->expires);
SAS::report_event(event);
}
}
}
