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vdr-plugin-satip/rtsp.c

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/*
* rtsp.c: SAT>IP plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
*/
#define __STDC_FORMAT_MACROS // Required for format specifiers
#include <inttypes.h>
#include "config.h"
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#include "common.h"
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#include "log.h"
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#include "rtsp.h"
cSatipRtsp::cSatipRtsp(cSatipTunerIf &tunerP)
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: tunerM(tunerP),
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headerBufferM(),
dataBufferM(),
modeM(cmUnicast),
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handleM(NULL),
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headerListM(NULL),
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errorNoMoreM(""),
errorOutOfRangeM(""),
errorCheckSyntaxM("")
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{
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debug1("%s [device %d]", __PRETTY_FUNCTION__, tunerM.GetId());
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Create();
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}
cSatipRtsp::~cSatipRtsp()
{
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debug1("%s [device %d]", __PRETTY_FUNCTION__, tunerM.GetId());
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Destroy();
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}
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size_t cSatipRtsp::HeaderCallback(char *ptrP, size_t sizeP, size_t nmembP, void *dataP)
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{
cSatipRtsp *obj = reinterpret_cast<cSatipRtsp *>(dataP);
size_t len = sizeP * nmembP;
debug16("%s len=%zu", __PRETTY_FUNCTION__, len);
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if (obj && (len > 0))
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obj->headerBufferM.Add(ptrP, len);
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return len;
}
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size_t cSatipRtsp::DataCallback(char *ptrP, size_t sizeP, size_t nmembP, void *dataP)
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{
cSatipRtsp *obj = reinterpret_cast<cSatipRtsp *>(dataP);
size_t len = sizeP * nmembP;
debug16("%s len=%zu", __PRETTY_FUNCTION__, len);
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if (obj)
obj->dataBufferM.Add(ptrP, len);
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return len;
}
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int cSatipRtsp::DebugCallback(CURL *handleP, curl_infotype typeP, char *dataP, size_t sizeP, void *userPtrP)
{
cSatipRtsp *obj = reinterpret_cast<cSatipRtsp *>(userPtrP);
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if (obj) {
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switch (typeP) {
case CURLINFO_TEXT:
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debug2("%s [device %d] RTSP INFO %.*s", __PRETTY_FUNCTION__, obj->tunerM.GetId(), (int)sizeP, dataP);
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break;
case CURLINFO_HEADER_IN:
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debug2("%s [device %d] RTSP HEAD <<< %.*s", __PRETTY_FUNCTION__, obj->tunerM.GetId(), (int)sizeP, dataP);
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break;
case CURLINFO_HEADER_OUT:
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debug2("%s [device %d] RTSP HEAD >>>\n%.*s", __PRETTY_FUNCTION__, obj->tunerM.GetId(), (int)sizeP, dataP);
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break;
case CURLINFO_DATA_IN:
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debug2("%s [device %d] RTSP DATA <<< %.*s", __PRETTY_FUNCTION__, obj->tunerM.GetId(), (int)sizeP, dataP);
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break;
case CURLINFO_DATA_OUT:
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debug2("%s [device %d] RTSP DATA >>>\n%.*s", __PRETTY_FUNCTION__, obj->tunerM.GetId(), (int)sizeP, dataP);
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break;
default:
break;
}
}
return 0;
}
cString cSatipRtsp::RtspUnescapeString(const char *strP)
{
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debug1("%s (%s) [device %d]", __PRETTY_FUNCTION__, strP, tunerM.GetId());
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if (handleM) {
char *p = curl_easy_unescape(handleM, strP, 0, NULL);
cString s = p;
curl_free(p);
return s;
}
return cString(strP);
}
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void cSatipRtsp::Create(void)
{
debug1("%s [device %d]", __PRETTY_FUNCTION__, tunerM.GetId());
if (!handleM)
handleM = curl_easy_init();
if (handleM) {
CURLcode res = CURLE_OK;
// Verbose output
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_VERBOSE, 1L);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_DEBUGFUNCTION, cSatipRtsp::DebugCallback);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_DEBUGDATA, this);
// No progress meter and no signaling
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_NOPROGRESS, 1L);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_NOSIGNAL, 1L);
// Set timeouts
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_TIMEOUT_MS, (long)eConnectTimeoutMs);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_CONNECTTIMEOUT_MS, (long)eConnectTimeoutMs);
// Set user-agent
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_USERAGENT, *cString::sprintf("vdr-%s/%s (device %d)", PLUGIN_NAME_I18N, VERSION, tunerM.GetId()));
}
}
void cSatipRtsp::Destroy(void)
{
debug1("%s [device %d]", __PRETTY_FUNCTION__, tunerM.GetId());
if (handleM) {
// Cleanup curl stuff
if (headerListM) {
curl_slist_free_all(headerListM);
headerListM = NULL;
}
curl_easy_cleanup(handleM);
handleM = NULL;
}
}
void cSatipRtsp::Reset(void)
{
debug1("%s [device %d]", __PRETTY_FUNCTION__, tunerM.GetId());
Destroy();
Create();
}
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bool cSatipRtsp::Options(const char *uriP)
{
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debug1("%s (%s) [device %d]", __PRETTY_FUNCTION__, uriP, tunerM.GetId());
bool result = false;
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if (handleM && !isempty(uriP)) {
long rc = 0;
cTimeMs processing(0);
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CURLcode res = CURLE_OK;
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_URL, uriP);
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_STREAM_URI, uriP);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_OPTIONS);
SATIP_CURL_EASY_PERFORM(handleM);
result = ValidateLatestResponse(&rc);
debug5("%s (%s) Response %ld in %" PRIu64 " ms [device %d]", __PRETTY_FUNCTION__, uriP, rc, processing.Elapsed(), tunerM.GetId());
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}
return result;
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}
bool cSatipRtsp::Setup(const char *uriP, int rtpPortP, int rtcpPortP)
{
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debug1("%s (%s, %d, %d) [device %d]", __PRETTY_FUNCTION__, uriP, rtpPortP, rtcpPortP, tunerM.GetId());
bool result = false;
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if (handleM && !isempty(uriP)) {
cString transport;
long rc = 0;
cTimeMs processing(0);
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CURLcode res = CURLE_OK;
switch (modeM) {
case cmMulticast:
// RTP/AVP;multicast;destination=<IP multicast address>;port=<RTP port>-<RTCP port>;ttl=<ttl>
transport = cString::sprintf("RTP/AVP;multicast;port=%d-%d", rtpPortP, rtcpPortP);
break;
default:
case cmUnicast:
// RTP/AVP;unicast;client_port=<client RTP port>-<client RTCP port>
transport = cString::sprintf("RTP/AVP;unicast;client_port=%d-%d", rtpPortP, rtcpPortP);
break;
}
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// Setup media stream
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_STREAM_URI, uriP);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_TRANSPORT, *transport);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_SETUP);
// Set header callback for catching the session and timeout
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_HEADERFUNCTION, cSatipRtsp::HeaderCallback);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEHEADER, this);
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEFUNCTION, cSatipRtsp::DataCallback);
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEDATA, this);
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SATIP_CURL_EASY_PERFORM(handleM);
// Session id is now known - disable header parsing
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_HEADERFUNCTION, NULL);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEHEADER, NULL);
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEFUNCTION, NULL);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEDATA, NULL);
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if (headerBufferM.Size() > 0) {
ParseHeader();
headerBufferM.Reset();
}
if (dataBufferM.Size() > 0) {
ParseData();
dataBufferM.Reset();
}
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result = ValidateLatestResponse(&rc);
debug5("%s (%s, %d, %d) Response %ld in %" PRIu64 " ms [device %d]", __PRETTY_FUNCTION__, uriP, rtpPortP, rtcpPortP, rc, processing.Elapsed(), tunerM.GetId());
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}
return result;
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}
bool cSatipRtsp::SetSession(const char *sessionP)
{
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debug1("%s (%s) [device %d]", __PRETTY_FUNCTION__, sessionP, tunerM.GetId());
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if (handleM) {
CURLcode res = CURLE_OK;
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debug1("%s: session id quirk enabled [device %d]", __PRETTY_FUNCTION__, tunerM.GetId());
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_SESSION_ID, sessionP);
}
return true;
}
bool cSatipRtsp::Describe(const char *uriP)
{
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debug1("%s (%s) [device %d]", __PRETTY_FUNCTION__, uriP, tunerM.GetId());
bool result = false;
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if (handleM && !isempty(uriP)) {
long rc = 0;
cTimeMs processing(0);
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CURLcode res = CURLE_OK;
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_STREAM_URI, uriP);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_DESCRIBE);
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEFUNCTION, cSatipRtsp::DataCallback);
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEDATA, this);
SATIP_CURL_EASY_PERFORM(handleM);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEFUNCTION, NULL);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEDATA, NULL);
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if (dataBufferM.Size() > 0) {
tunerM.ProcessApplicationData((u_char *)dataBufferM.Data(), dataBufferM.Size());
dataBufferM.Reset();
}
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result = ValidateLatestResponse(&rc);
debug5("%s (%s) Response %ld in %" PRIu64 " ms [device %d]", __PRETTY_FUNCTION__, uriP, rc, processing.Elapsed(), tunerM.GetId());
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}
return result;
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}
bool cSatipRtsp::Play(const char *uriP)
{
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debug1("%s (%s) [device %d]", __PRETTY_FUNCTION__, uriP, tunerM.GetId());
bool result = false;
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if (handleM && !isempty(uriP)) {
long rc = 0;
cTimeMs processing(0);
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CURLcode res = CURLE_OK;
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_STREAM_URI, uriP);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_PLAY);
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEFUNCTION, cSatipRtsp::DataCallback);
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEDATA, this);
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SATIP_CURL_EASY_PERFORM(handleM);
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEFUNCTION, NULL);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEDATA, NULL);
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if (dataBufferM.Size() > 0) {
ParseData();
dataBufferM.Reset();
}
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result = ValidateLatestResponse(&rc);
debug5("%s (%s) Response %ld in %" PRIu64 " ms [device %d]", __PRETTY_FUNCTION__, uriP, rc, processing.Elapsed(), tunerM.GetId());
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}
return result;
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}
bool cSatipRtsp::Teardown(const char *uriP)
{
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debug1("%s (%s) [device %d]", __PRETTY_FUNCTION__, uriP, tunerM.GetId());
bool result = false;
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if (handleM && !isempty(uriP)) {
long rc = 0;
cTimeMs processing(0);
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CURLcode res = CURLE_OK;
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_STREAM_URI, uriP);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_TEARDOWN);
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEFUNCTION, cSatipRtsp::DataCallback);
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEDATA, this);
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SATIP_CURL_EASY_PERFORM(handleM);
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEFUNCTION, NULL);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEDATA, NULL);
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if (dataBufferM.Size() > 0) {
ParseData();
dataBufferM.Reset();
}
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SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_CLIENT_CSEQ, 1L);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_SESSION_ID, NULL);
result = ValidateLatestResponse(&rc);
debug5("%s (%s) Response %ld in %" PRIu64 " ms [device %d]", __PRETTY_FUNCTION__, uriP, rc, processing.Elapsed(), tunerM.GetId());
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}
return result;
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}
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void cSatipRtsp::ParseHeader(void)
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{
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debug1("%s [device %d]", __PRETTY_FUNCTION__, tunerM.GetId());
char *s, *p = headerBufferM.Data();
char *r = strtok_r(p, "\r\n", &s);
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while (r) {
debug16("%s (%zu): %s", __PRETTY_FUNCTION__, headerBufferM.Size(), r);
r = skipspace(r);
if (strstr(r, "com.ses.streamID")) {
int streamid = -1;
if (sscanf(r, "com.ses.streamID:%11d", &streamid) == 1)
tunerM.SetStreamId(streamid);
}
else if (strstr(r, "Session:")) {
int timeout = -1;
char *session = NULL;
if (sscanf(r, "Session:%m[^;];timeout=%11d", &session, &timeout) == 2)
tunerM.SetSessionTimeout(skipspace(session), timeout * 1000);
else if (sscanf(r, "Session:%m[^;]", &session) == 1)
tunerM.SetSessionTimeout(skipspace(session), -1);
FREE_POINTER(session);
}
r = strtok_r(NULL, "\r\n", &s);
}
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}
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void cSatipRtsp::ParseData(void)
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{
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debug1("%s [device %d]", __PRETTY_FUNCTION__, tunerM.GetId());
char *s, *p = dataBufferM.Data();
char *r = strtok_r(p, "\r\n", &s);
while (r) {
debug16("%s (%zu): %s", __PRETTY_FUNCTION__, dataBufferM.Size(), r);
r = skipspace(r);
if (strstr(r, "No-More:")) {
char *tmp = NULL;
if (sscanf(r, "No-More:%m[^;]", &tmp) == 1) {
errorNoMoreM = skipspace(tmp);
debug3("%s No-More: %s [device %d]", __PRETTY_FUNCTION__, *errorNoMoreM, tunerM.GetId());
}
FREE_POINTER(tmp);
}
else if (strstr(r, "Out-of-Range:")) {
char *tmp = NULL;
if (sscanf(r, "Out-of-Range:%m[^;]", &tmp) == 1) {
errorOutOfRangeM = skipspace(tmp);
debug3("%s Out-of-Range: %s [device %d]", __PRETTY_FUNCTION__, *errorOutOfRangeM, tunerM.GetId());
}
FREE_POINTER(tmp);
}
else if (strstr(r, "Check-Syntax:")) {
char *tmp = NULL;
if (sscanf(r, "Check-Syntax:%m[^;]", &tmp) == 1) {
errorCheckSyntaxM = skipspace(tmp);
debug3("%s Check-Syntax: %s [device %d]", __PRETTY_FUNCTION__, *errorCheckSyntaxM, tunerM.GetId());
}
FREE_POINTER(tmp);
}
r = strtok_r(NULL, "\r\n", &s);
}
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}
bool cSatipRtsp::ValidateLatestResponse(long *rcP)
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{
bool result = false;
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if (handleM) {
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char *url = NULL;
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long rc = 0;
CURLcode res = CURLE_OK;
SATIP_CURL_EASY_GETINFO(handleM, CURLINFO_RESPONSE_CODE, &rc);
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switch (rc) {
case 200:
result = true;
break;
case 400:
// SETUP PLAY TEARDOWN
// The message body of the response may contain the "Check-Syntax:" parameter followed
// by the malformed syntax
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if (!isempty(*errorCheckSyntaxM)) {
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SATIP_CURL_EASY_GETINFO(handleM, CURLINFO_EFFECTIVE_URL, &url);
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error("Check syntax: %s (error code %ld: %s) [device %d]", *errorCheckSyntaxM, rc, url, tunerM.GetId());
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break;
}
case 403:
// SETUP PLAY TEARDOWN
// The message body of the response may contain the "Out-of-Range:" parameter followed
// by a space-separated list of the attribute names that are not understood:
// "src" "fe" "freq" "pol" "msys" "mtype" "plts" "ro" "sr" "fec" "pids" "addpids" "delpids" "mcast
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if (!isempty(*errorOutOfRangeM)) {
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SATIP_CURL_EASY_GETINFO(handleM, CURLINFO_EFFECTIVE_URL, &url);
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error("Out of range: %s (error code %ld: %s) [device %d]", *errorOutOfRangeM, rc, url, tunerM.GetId());
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break;
}
case 503:
// SETUP PLAY
// The message body of the response may contain the "No-More:" parameter followed
// by a space-separated list of the missing ressources: “sessions” "frontends" "pids
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if (!isempty(*errorNoMoreM)) {
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SATIP_CURL_EASY_GETINFO(handleM, CURLINFO_EFFECTIVE_URL, &url);
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error("No more: %s (error code %ld: %s) [device %d]", *errorNoMoreM, rc, url, tunerM.GetId());
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break;
}
default:
SATIP_CURL_EASY_GETINFO(handleM, CURLINFO_EFFECTIVE_URL, &url);
error("Detected invalid status code %ld: %s [device %d]", rc, url, tunerM.GetId());
break;
}
if (rcP)
*rcP = rc;
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}
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errorNoMoreM = "";
errorOutOfRangeM = "";
errorCheckSyntaxM = "";
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debug1("%s result=%s [device %d]", __PRETTY_FUNCTION__, result ? "ok" : "failed", tunerM.GetId());
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return result;
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}