/*
* Get message body and check Content-Type header field
*/
int extract_body(struct sip_msg *msg, str *body )
{
body->s = get_body(msg);
if (body->s==0) {
LM_ERR("failed to get the message body\n");
goto error;
}
body->len = msg->len -(int)(body->s-msg->buf);
if (body->len==0) {
LM_ERR("message body has length zero\n");
goto error;
}
/* no need for parse_headers(msg, EOH), get_body will
* parse everything */
/*is the content type correct?*/
if (check_content_type(msg)==-1)
{
LM_ERR("content type mismatching\n");
goto error;
}
/*LM_DBG("DEBUG:extract_body:=|%.*s|\n",body->len,body->s);*/
return 1;
error:
return -1;
}
static int mpjpeg_read_probe(AVProbeData *p)
{
AVIOContext *pb;
char line[128] = { 0 };
int ret = 0;
if (p->buf_size < 2 || p->buf[0] != '-' || p->buf[1] != '-')
return 0;
pb = avio_alloc_context(p->buf, p->buf_size, 0, NULL, NULL, NULL, NULL);
if (!pb)
return AVERROR(ENOMEM);
while (!pb->eof_reached) {
ret = get_line(pb, line, sizeof(line));
if (ret < 0)
break;
ret = check_content_type(line);
if (!ret) {
ret = AVPROBE_SCORE_MAX;
break;
}
}
av_free(pb);
return ret;
}
static void service_rpc(char *service_name)
{
const char *argv[] = {NULL, "--stateless-rpc", ".", NULL};
struct rpc_service *svc = select_service(service_name);
struct strbuf buf = STRBUF_INIT;
strbuf_reset(&buf);
strbuf_addf(&buf, "application/x-git-%s-request", svc->name);
check_content_type(buf.buf);
hdr_nocache();
strbuf_reset(&buf);
strbuf_addf(&buf, "application/x-git-%s-result", svc->name);
hdr_str(content_type, buf.buf);
end_headers();
argv[0] = svc->name;
run_service(argv);
strbuf_release(&buf);
}
/*
* Get message body and check Content-Type header field
*/
int extract_body(struct sip_msg *msg, str *body )
{
char c;
int skip;
if ( get_body(msg,body)!=0 || body->len==0) {
LM_ERR("failed to get the message body\n");
goto error;
}
/* no need for parse_headers(msg, EOH), get_body will
* parse everything */
/*is the content type correct?*/
if (check_content_type(msg)==-1)
{
LM_ERR("content type mismatching\n");
goto error;
}
for (skip = 0; skip < body->len; skip++) {
c = body->s[body->len - skip - 1];
if (c != '\r' && c != '\n')
break;
}
if (skip == body->len) {
LM_ERR("empty body\n");
goto error;
}
body->len -= skip;
/*LM_DBG("DEBUG:extract_body:%d=|%.*s|\n",body->len,body->len,body->s);*/
return 1;
error:
body->s = NULL;
body->len = 0;
return -1;
}
int check_metalink_content_type(const char *content_type)
{
return check_content_type(content_type, "application/metalink+xml");
}
static int msg_send(void *data)
{
RAII_VAR(struct msg_data *, mdata, data, ao2_cleanup);
const struct ast_sip_body body = {
.type = "text",
.subtype = "plain",
.body_text = ast_msg_get_body(mdata->msg)
};
pjsip_tx_data *tdata;
RAII_VAR(char *, uri, NULL, ast_free);
RAII_VAR(struct ast_sip_endpoint *, endpoint, get_outbound_endpoint(
mdata->to, &uri), ao2_cleanup);
if (!endpoint) {
ast_log(LOG_ERROR, "PJSIP MESSAGE - Could not find endpoint '%s' and "
"no default outbound endpoint configured\n", mdata->to);
return -1;
}
if (ast_sip_create_request("MESSAGE", NULL, endpoint, uri, NULL, &tdata)) {
ast_log(LOG_ERROR, "PJSIP MESSAGE - Could not create request\n");
return -1;
}
update_to(tdata, mdata->to);
update_from(tdata, mdata->from);
if (ast_sip_add_body(tdata, &body)) {
pjsip_tx_data_dec_ref(tdata);
ast_log(LOG_ERROR, "PJSIP MESSAGE - Could not add body to request\n");
return -1;
}
vars_to_headers(mdata->msg, tdata);
ast_debug(1, "Sending message to '%s' (via endpoint %s) from '%s'\n",
mdata->to, ast_sorcery_object_get_id(endpoint), mdata->from);
if (ast_sip_send_request(tdata, NULL, endpoint, NULL, NULL)) {
ast_log(LOG_ERROR, "PJSIP MESSAGE - Could not send request\n");
return -1;
}
return PJ_SUCCESS;
}
static int sip_msg_send(const struct ast_msg *msg, const char *to, const char *from)
{
struct msg_data *mdata;
if (ast_strlen_zero(to)) {
ast_log(LOG_ERROR, "SIP MESSAGE - a 'To' URI must be specified\n");
return -1;
}
if (!(mdata = msg_data_create(msg, to, from)) ||
ast_sip_push_task(message_serializer, msg_send, mdata)) {
ao2_ref(mdata, -1);
return -1;
}
return 0;
}
static const struct ast_msg_tech msg_tech = {
.name = "pjsip",
.msg_send = sip_msg_send,
};
static pj_status_t send_response(pjsip_rx_data *rdata, enum pjsip_status_code code,
pjsip_dialog *dlg, pjsip_transaction *tsx)
{
pjsip_tx_data *tdata;
pj_status_t status;
status = ast_sip_create_response(rdata, code, NULL, &tdata);
if (status != PJ_SUCCESS) {
ast_log(LOG_ERROR, "Unable to create response (%d)\n", status);
return status;
}
if (dlg && tsx) {
status = pjsip_dlg_send_response(dlg, tsx, tdata);
} else {
struct ast_sip_endpoint *endpoint;
endpoint = ast_pjsip_rdata_get_endpoint(rdata);
status = ast_sip_send_stateful_response(rdata, tdata, endpoint);
ao2_cleanup(endpoint);
}
if (status != PJ_SUCCESS) {
ast_log(LOG_ERROR, "Unable to send response (%d)\n", status);
}
return status;
}
static pj_bool_t module_on_rx_request(pjsip_rx_data *rdata)
{
enum pjsip_status_code code;
struct ast_msg *msg;
/* if not a MESSAGE, don't handle */
if (pjsip_method_cmp(&rdata->msg_info.msg->line.req.method, &pjsip_message_method)) {
return PJ_FALSE;
}
code = check_content_type(rdata);
if (code != PJSIP_SC_OK) {
send_response(rdata, code, NULL, NULL);
return PJ_TRUE;
}
msg = ast_msg_alloc();
if (!msg) {
send_response(rdata, PJSIP_SC_INTERNAL_SERVER_ERROR, NULL, NULL);
return PJ_TRUE;
}
code = rx_data_to_ast_msg(rdata, msg);
if (code != PJSIP_SC_OK) {
send_response(rdata, code, NULL, NULL);
ast_msg_destroy(msg);
return PJ_TRUE;
}
if (!ast_msg_has_destination(msg)) {
ast_debug(1, "MESSAGE request received, but no handler wanted it\n");
send_response(rdata, PJSIP_SC_NOT_FOUND, NULL, NULL);
ast_msg_destroy(msg);
return PJ_TRUE;
}
/* Send it to the messaging core.
*
* If we are unable to send a response, the most likely reason is that we
* are handling a retransmission of an incoming MESSAGE and were unable to
* create a transaction due to a duplicate key. If we are unable to send
* a response, we should not queue the message to the dialplan
*/
if (!send_response(rdata, PJSIP_SC_ACCEPTED, NULL, NULL)) {
ast_msg_queue(msg);
}
return PJ_TRUE;
}
static int incoming_in_dialog_request(struct ast_sip_session *session, struct pjsip_rx_data *rdata)
{
char buf[MAX_BODY_SIZE];
enum pjsip_status_code code;
struct ast_frame f;
pjsip_dialog *dlg = session->inv_session->dlg;
pjsip_transaction *tsx = pjsip_rdata_get_tsx(rdata);
if (!session->channel) {
send_response(rdata, PJSIP_SC_NOT_FOUND, dlg, tsx);
return 0;
}
if ((code = check_content_type(rdata)) != PJSIP_SC_OK) {
send_response(rdata, code, dlg, tsx);
return 0;
}
if (print_body(rdata, buf, sizeof(buf)-1) < 1) {
/* invalid body size */
send_response(rdata, PJSIP_SC_REQUEST_ENTITY_TOO_LARGE, dlg, tsx);
return 0;
}
ast_debug(3, "Received in dialog SIP message\n");
memset(&f, 0, sizeof(f));
f.frametype = AST_FRAME_TEXT;
f.subclass.integer = 0;
f.offset = 0;
f.data.ptr = buf;
f.datalen = strlen(buf) + 1;
ast_queue_frame(session->channel, &f);
send_response(rdata, PJSIP_SC_ACCEPTED, dlg, tsx);
return 0;
}
static int msg_send(void *data)
{
RAII_VAR(struct msg_data *, mdata, data, ao2_cleanup);
const struct ast_sip_body body = {
.type = "text",
.subtype = "plain",
.body_text = ast_msg_get_body(mdata->msg)
};
pjsip_tx_data *tdata;
RAII_VAR(char *, uri, NULL, ast_free);
RAII_VAR(struct ast_sip_endpoint *, endpoint, get_outbound_endpoint(
mdata->to, &uri), ao2_cleanup);
if (!endpoint) {
ast_log(LOG_ERROR, "PJSIP MESSAGE - Could not find endpoint and "
"no default outbound endpoint configured\n");
return -1;
}
if (ast_sip_create_request("MESSAGE", NULL, endpoint, uri, NULL, &tdata)) {
ast_log(LOG_ERROR, "PJSIP MESSAGE - Could not create request\n");
return -1;
}
update_to(tdata, mdata->to);
update_from(tdata, mdata->from);
if (ast_sip_add_body(tdata, &body)) {
pjsip_tx_data_dec_ref(tdata);
ast_log(LOG_ERROR, "PJSIP MESSAGE - Could not add body to request\n");
return -1;
}
vars_to_headers(mdata->msg, tdata);
if (ast_sip_send_request(tdata, NULL, endpoint, NULL, NULL)) {
ast_log(LOG_ERROR, "PJSIP MESSAGE - Could not send request\n");
return -1;
}
return PJ_SUCCESS;
}
static int sip_msg_send(const struct ast_msg *msg, const char *to, const char *from)
{
struct msg_data *mdata;
if (ast_strlen_zero(to)) {
ast_log(LOG_ERROR, "SIP MESSAGE - a 'To' URI must be specified\n");
return -1;
}
if (!(mdata = msg_data_create(msg, to, from)) ||
ast_sip_push_task(NULL, msg_send, mdata)) {
ao2_ref(mdata, -1);
return -1;
}
return 0;
}
static const struct ast_msg_tech msg_tech = {
.name = "pjsip",
.msg_send = sip_msg_send,
};
static pj_status_t send_response(pjsip_rx_data *rdata, enum pjsip_status_code code,
pjsip_dialog *dlg, pjsip_transaction *tsx)
{
pjsip_tx_data *tdata;
pj_status_t status;
pjsip_response_addr res_addr;
status = ast_sip_create_response(rdata, code, NULL, &tdata);
if (status != PJ_SUCCESS) {
ast_log(LOG_ERROR, "Unable to create response (%d)\n", status);
return status;
}
if (dlg && tsx) {
status = pjsip_dlg_send_response(dlg, tsx, tdata);
} else {
/* Get where to send request. */
status = pjsip_get_response_addr(tdata->pool, rdata, &res_addr);
if (status != PJ_SUCCESS) {
ast_log(LOG_ERROR, "Unable to get response address (%d)\n", status);
return status;
}
status = ast_sip_send_response(&res_addr, tdata, ast_pjsip_rdata_get_endpoint(rdata));
}
if (status != PJ_SUCCESS) {
ast_log(LOG_ERROR, "Unable to send response (%d)\n", status);
}
return status;
}
static pj_bool_t module_on_rx_request(pjsip_rx_data *rdata)
{
enum pjsip_status_code code;
struct ast_msg *msg;
/* if not a MESSAGE, don't handle */
if (pjsip_method_cmp(&rdata->msg_info.msg->line.req.method, &pjsip_message_method)) {
return PJ_FALSE;
}
msg = ast_msg_alloc();
if (!msg) {
send_response(rdata, PJSIP_SC_INTERNAL_SERVER_ERROR, NULL, NULL);
return PJ_TRUE;
}
if ((code = check_content_type(rdata)) != PJSIP_SC_OK) {
send_response(rdata, code, NULL, NULL);
return PJ_TRUE;
}
if ((code = rx_data_to_ast_msg(rdata, msg)) == PJSIP_SC_OK) {
/* send it to the dialplan */
ast_msg_queue(msg);
code = PJSIP_SC_ACCEPTED;
}
send_response(rdata, code, NULL, NULL);
return PJ_TRUE;
}
static int incoming_in_dialog_request(struct ast_sip_session *session, struct pjsip_rx_data *rdata)
{
char buf[MAX_BODY_SIZE];
enum pjsip_status_code code;
struct ast_frame f;
pjsip_dialog *dlg = session->inv_session->dlg;
pjsip_transaction *tsx = pjsip_rdata_get_tsx(rdata);
if ((code = check_content_type(rdata)) != PJSIP_SC_OK) {
send_response(rdata, code, dlg, tsx);
return 0;
}
if (print_body(rdata, buf, sizeof(buf)-1) < 1) {
/* invalid body size */
return 0;
}
ast_debug(3, "Received in dialog SIP message\n");
memset(&f, 0, sizeof(f));
f.frametype = AST_FRAME_TEXT;
f.subclass.integer = 0;
f.offset = 0;
f.data.ptr = buf;
f.datalen = strlen(buf) + 1;
ast_queue_frame(session->channel, &f);
send_response(rdata, PJSIP_SC_ACCEPTED, dlg, tsx);
return 0;
}
//static int check_user_natted(struct sip *msg, struct sip_uri *uri){
int P_SDP_manipulate(struct sip_msg *msg,char *str1,char *str2)
{
int response = CSCF_RETURN_FALSE ;
int method;
struct sip_msg *req=0;
if (!pcscf_nat_enable || !rtpproxy_enable) return CSCF_RETURN_FALSE;
if( check_content_type(msg) )
{
if (msg->first_line.type == SIP_REQUEST) method = msg->first_line.u.request.method_value;
else {
req = cscf_get_request_from_reply(msg);
if (req){
method = req->first_line.u.request.method_value;
}else method=METHOD_UNDEF;
}
switch(method)
{
case METHOD_INVITE:
if (msg->first_line.type == SIP_REQUEST){
/* on INVITE */
/* check the sdp if it has a 1918 */
if(1)
{
/* get rtp_proxy/nathelper to open ports - get a iovec*/
response = force_rtp_proxy2_f(msg,"","") ;
LOG(L_CRIT,"DBG:"M_NAME":P_SDP_manipulate: ... rtp proxy done\n");
} else {
/* using public ip */
LOG(L_CRIT,"DBG:"M_NAME":P_SDP_manipulate: ... found public network in SDP.\n");
response = CSCF_RETURN_FALSE ;
}
}else{
if (msg->first_line.u.reply.statuscode == 183 ||
(msg->first_line.u.reply.statuscode >= 200 &&
msg->first_line.u.reply.statuscode < 300)) {
if(1)
{
/* sdp_1918(msg) */
/* str1 & str2 must be something */
response = force_rtp_proxy2_f(msg, "", "") ;
LOG(L_CRIT,"DBG:"M_NAME":P_SDP_manipulate: ... rtp proxy done\n");
} else {
/* public ip found */
response = CSCF_RETURN_FALSE ;
}
break;
}
}
break ;
case METHOD_BYE:
case METHOD_CANCEL:
LOG(L_CRIT,"DBG:"M_NAME":P_SDP_manipulate: on BYE/CANCEL...\n");
if (msg->first_line.type == SIP_REQUEST){
/* request/response not acceptable */
response = unforce_rtp_proxy_f(msg,-1) ;
}
break;
default:
response = CSCF_RETURN_FALSE;
break;
}
} else {
LOG(L_ERR, "ERROR:check_content_type: parse error:"
"see the content_type block\n");
response = -1 ;
}
return response ;
}
