/*!
* \brief Sends the UNSUBCRIBE gena request and recieves the response from the
* device and returns it as a parameter.
*
* \returns 0 if successful, otherwise returns the appropriate error code.
*/
static int gena_unsubscribe(
/*! [in] Event URL of the service. */
IN const UpnpString *url,
/*! [in] The subcription ID. */
IN const UpnpString *sid,
/*! [out] The UNSUBCRIBE response from the device. */
OUT http_parser_t *response )
{
int return_code;
uri_type dest_url;
membuffer request;
/* parse url */
return_code = http_FixStrUrl(
UpnpString_get_String(url),
UpnpString_get_Length(url),
&dest_url);
if (return_code != 0) {
return return_code;
}
/* make request msg */
membuffer_init(&request);
request.size_inc = 30;
return_code = http_MakeMessage(
&request, 1, 1,
"q" "ssc" "Uc",
HTTPMETHOD_UNSUBSCRIBE, &dest_url,
"SID: ", UpnpString_get_String(sid));
/* Not able to make the message so destroy the existing buffer */
if (return_code != 0) {
membuffer_destroy(&request);
return return_code;
}
/* send request and get reply */
return_code = http_RequestAndResponse(
&dest_url, request.buf, request.length,
HTTPMETHOD_UNSUBSCRIBE, HTTP_DEFAULT_TIMEOUT, response);
membuffer_destroy(&request);
if (return_code != 0) {
httpmsg_destroy(&response->msg);
}
if (return_code == 0 && response->msg.status_code != HTTP_OK) {
return_code = UPNP_E_UNSUBSCRIBE_UNACCEPTED;
httpmsg_destroy(&response->msg);
}
return return_code;
}
/****************************************************************************
* Function : soap_request_and_response
*
* Parameters :
* IN membuffer* request : request that will be sent to the device
* IN uri_type* destination_url : destination address string
* OUT http_parser_t *response : response from the device
*
* Description : This function sends the control point's request to the
* device and receives a response from it.
*
* Return : int
*
* Note :
****************************************************************************/
static int
soap_request_and_response( IN membuffer * request,
IN uri_type * destination_url,
OUT http_parser_t * response )
{
int ret_code;
ret_code = http_RequestAndResponse( destination_url, request->buf,
request->length,
SOAPMETHOD_POST,
UPNP_TIMEOUT, response );
if( ret_code != 0 ) {
httpmsg_destroy( &response->msg );
return ret_code;
}
/* method-not-allowed error */
if( response->msg.status_code == HTTP_METHOD_NOT_ALLOWED ) {
ret_code = add_man_header( request ); /* change to M-POST msg */
if( ret_code != 0 ) {
return ret_code;
}
httpmsg_destroy( &response->msg ); /* about to reuse response */
/* try again */
ret_code = http_RequestAndResponse( destination_url, request->buf,
request->length,
HTTPMETHOD_MPOST,
UPNP_TIMEOUT,
response );
if( ret_code != 0 ) {
httpmsg_destroy( &response->msg );
}
}
return ret_code;
}
/************************************************************************
* Function : gena_unsubscribe
*
* Parameters:
* IN char *url: Event URL of the service
* IN char *sid: The subcription ID.
* OUT http_parser_t* response: The UNSUBCRIBE response from the device
*
* Description:
* This function sends the UNSUBCRIBE gena request and recieves the
* response from the device and returns it as a parameter
*
* Returns: int
* return 0 if successful else returns appropriate error
***************************************************************************/
static int
gena_unsubscribe( IN char *url,
IN char *sid,
OUT http_parser_t * response )
{
int return_code;
uri_type dest_url;
membuffer request;
// parse url
return_code = http_FixStrUrl( url, strlen( url ), &dest_url );
if( return_code != 0 ) {
return return_code;
}
// make request msg
membuffer_init( &request );
request.size_inc = 30;
return_code = http_MakeMessage( &request, 1, 1,
"q" "ssc" "U" "c",
HTTPMETHOD_UNSUBSCRIBE, &dest_url,
"SID: ", sid );
//Not able to make the message so destroy the existing buffer
if( return_code != 0 ) {
membuffer_destroy( &request );
return return_code;
}
// send request and get reply
return_code = http_RequestAndResponse( &dest_url, request.buf,
request.length,
HTTPMETHOD_UNSUBSCRIBE,
HTTP_DEFAULT_TIMEOUT,
response );
membuffer_destroy( &request );
if( return_code != 0 )
httpmsg_destroy( &response->msg );
if( return_code == 0 && response->msg.status_code != HTTP_OK ) {
return_code = UPNP_E_UNSUBSCRIBE_UNACCEPTED;
httpmsg_destroy( &response->msg );
}
return return_code;
}
/************************************************************************
* Function : gena_subscribe
*
* Parameters:
* IN char *url: url of service to subscribe
* INOUT int* timeout:subscription time desired (in secs)
* IN char* renewal_sid:for renewal, this contains a currently h
* held subscription SID. For first time
* subscription, this must be NULL
* OUT char** sid: SID returned by the subscription or renew msg
*
* Description:
* This function subscribes or renew subscription
*
* Returns: int
* return 0 if successful else returns appropriate error
***************************************************************************/
static int
gena_subscribe( IN char *url,
INOUT int *timeout,
IN char *renewal_sid,
OUT char **sid )
{
int return_code;
memptr sid_hdr,
timeout_hdr;
char timeout_str[25];
membuffer request;
uri_type dest_url;
http_parser_t response;
*sid = NULL; // init
// request timeout to string
if( ( timeout == NULL ) ||
( ( *timeout > 0 )
&& ( *timeout < CP_MINIMUM_SUBSCRIPTION_TIME ) ) ) {
sprintf( timeout_str, "%d", CP_MINIMUM_SUBSCRIPTION_TIME );
} else if( *timeout >= 0 ) {
sprintf( timeout_str, "%d", *timeout );
} else {
strcpy( timeout_str, "infinite" );
}
// parse url
return_code = http_FixStrUrl( url, strlen( url ), &dest_url );
if( return_code != 0 ) {
return return_code;
}
// make request msg
membuffer_init( &request );
request.size_inc = 30;
if( renewal_sid ) {
// renew subscription
return_code = http_MakeMessage( &request, 1, 1,
"q" "ssc" "ssc" "c",
HTTPMETHOD_SUBSCRIBE, &dest_url,
"SID: ", renewal_sid,
"TIMEOUT: Second-", timeout_str );
} else {
// subscribe
return_code = http_MakeMessage( &request, 1, 1,
"q" "sssdsscc",
HTTPMETHOD_SUBSCRIBE, &dest_url,
"CALLBACK: <http://", LOCAL_HOST,
":", LOCAL_PORT,
"/>\r\n" "NT: upnp:event\r\n"
"TIMEOUT: Second-", timeout_str );
}
if( return_code != 0 ) {
return return_code;
}
// send request and get reply
return_code = http_RequestAndResponse( &dest_url, request.buf,
request.length,
HTTPMETHOD_SUBSCRIBE,
HTTP_DEFAULT_TIMEOUT,
&response );
membuffer_destroy( &request );
if( return_code != 0 ) {
httpmsg_destroy( &response.msg );
return return_code;
}
if( response.msg.status_code != HTTP_OK ) {
httpmsg_destroy( &response.msg );
return UPNP_E_SUBSCRIBE_UNACCEPTED;
}
// get SID and TIMEOUT
if( httpmsg_find_hdr( &response.msg, HDR_SID, &sid_hdr ) == NULL ||
sid_hdr.length == 0 ||
httpmsg_find_hdr( &response.msg,
HDR_TIMEOUT, &timeout_hdr ) == NULL ||
timeout_hdr.length == 0 ) {
httpmsg_destroy( &response.msg );
return UPNP_E_BAD_RESPONSE;
}
// save timeout
if( matchstr( timeout_hdr.buf, timeout_hdr.length, "%iSecond-%d%0",
timeout ) == PARSE_OK ) {
// nothing
} else if( memptr_cmp_nocase( &timeout_hdr, "Second-infinite" ) == 0 ) {
*timeout = -1;
} else {
httpmsg_destroy( &response.msg );
return UPNP_E_BAD_RESPONSE;
}
// save SID
*sid = str_alloc( sid_hdr.buf, sid_hdr.length );
if( *sid == NULL ) {
httpmsg_destroy( &response.msg );
return UPNP_E_OUTOF_MEMORY;
}
httpmsg_destroy( &response.msg );
return UPNP_E_SUCCESS;
}
/*!
* \brief Subscribes or renew subscription.
*
* \return 0 if successful, otherwise returns the appropriate error code.
*/
static int gena_subscribe(
/*! [in] URL of service to subscribe. */
IN const UpnpString *url,
/*! [in,out] Subscription time desired (in secs). */
INOUT int *timeout,
/*! [in] for renewal, this contains a currently held subscription SID.
* For first time subscription, this must be NULL. */
IN const UpnpString *renewal_sid,
/*! [out] SID returned by the subscription or renew msg. */
OUT UpnpString *sid)
{
int return_code;
int parse_ret = 0;
int local_timeout = CP_MINIMUM_SUBSCRIPTION_TIME;
memptr sid_hdr;
memptr timeout_hdr;
char timeout_str[25];
membuffer request;
uri_type dest_url;
http_parser_t response;
int rc = 0;
UpnpString_clear(sid);
/* request timeout to string */
if (timeout == NULL) {
timeout = &local_timeout;
}
if (*timeout < 0) {
memset(timeout_str, 0, sizeof(timeout_str));
strncpy(timeout_str, "infinite", sizeof(timeout_str) - 1);
} else if(*timeout < CP_MINIMUM_SUBSCRIPTION_TIME) {
rc = snprintf(timeout_str, sizeof(timeout_str),
"%d", CP_MINIMUM_SUBSCRIPTION_TIME);
} else {
rc = snprintf(timeout_str, sizeof(timeout_str), "%d", *timeout);
}
if (rc < 0 || (unsigned int) rc >= sizeof(timeout_str))
return UPNP_E_OUTOF_MEMORY;
/* parse url */
return_code = http_FixStrUrl(
UpnpString_get_String(url),
UpnpString_get_Length(url),
&dest_url);
if (return_code != 0) {
return return_code;
}
/* make request msg */
membuffer_init(&request);
request.size_inc = 30;
if (renewal_sid) {
/* renew subscription */
return_code = http_MakeMessage(
&request, 1, 1,
"q" "ssc" "sscc",
HTTPMETHOD_SUBSCRIBE, &dest_url,
"SID: ", UpnpString_get_String(renewal_sid),
"TIMEOUT: Second-", timeout_str );
} else {
/* subscribe */
if (dest_url.hostport.IPaddress.ss_family == AF_INET6) {
struct sockaddr_in6* DestAddr6 = (struct sockaddr_in6*)&dest_url.hostport.IPaddress;
return_code = http_MakeMessage(
&request, 1, 1,
"q" "sssdsc" "sc" "sscc",
HTTPMETHOD_SUBSCRIBE, &dest_url,
"CALLBACK: <http://[",
(IN6_IS_ADDR_LINKLOCAL(&DestAddr6->sin6_addr) || strlen(gIF_IPV6_ULA_GUA) == 0) ?
gIF_IPV6 : gIF_IPV6_ULA_GUA,
"]:", LOCAL_PORT_V6, "/>",
"NT: upnp:event",
"TIMEOUT: Second-", timeout_str);
} else {
return_code = http_MakeMessage(
&request, 1, 1,
"q" "sssdsc" "sc" "sscc",
HTTPMETHOD_SUBSCRIBE, &dest_url,
"CALLBACK: <http://", gIF_IPV4, ":", LOCAL_PORT_V4, "/>",
"NT: upnp:event",
"TIMEOUT: Second-", timeout_str);
}
}
if (return_code != 0) {
return return_code;
}
/* send request and get reply */
return_code = http_RequestAndResponse(&dest_url, request.buf,
request.length,
HTTPMETHOD_SUBSCRIBE,
HTTP_DEFAULT_TIMEOUT,
&response);
membuffer_destroy(&request);
if (return_code != 0) {
httpmsg_destroy(&response.msg);
return return_code;
}
if (response.msg.status_code != HTTP_OK) {
httpmsg_destroy(&response.msg);
return UPNP_E_SUBSCRIBE_UNACCEPTED;
}
/* get SID and TIMEOUT */
if (httpmsg_find_hdr(&response.msg, HDR_SID, &sid_hdr) == NULL ||
sid_hdr.length == 0 ||
httpmsg_find_hdr( &response.msg, HDR_TIMEOUT, &timeout_hdr ) == NULL ||
timeout_hdr.length == 0 ) {
httpmsg_destroy( &response.msg );
return UPNP_E_BAD_RESPONSE;
}
/* save timeout */
parse_ret = matchstr(timeout_hdr.buf, timeout_hdr.length, "%iSecond-%d%0", timeout);
if (parse_ret == PARSE_OK) {
/* nothing to do */
} else if (memptr_cmp_nocase(&timeout_hdr, "Second-infinite") == 0) {
*timeout = -1;
} else {
httpmsg_destroy( &response.msg );
return UPNP_E_BAD_RESPONSE;
}
/* save SID */
UpnpString_set_StringN(sid, sid_hdr.buf, sid_hdr.length);
if (UpnpString_get_String(sid) == NULL) {
httpmsg_destroy(&response.msg);
return UPNP_E_OUTOF_MEMORY;
}
httpmsg_destroy(&response.msg);
return UPNP_E_SUCCESS;
}
