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vdr-plugin-satip
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vdr-plugin-satip/discover.c

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/*
* discover.c: SAT>IP plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
*/
#include <string.h>
#ifdef USE_TINYXML
#include <tinyxml.h>
#else
#include <pugixml.hpp>
#endif
#include "common.h"
#include "config.h"
#include "log.h"
#include "socket.h"
#include "discover.h"
cSatipDiscover *cSatipDiscover::instanceS = NULL;
cSatipDiscover *cSatipDiscover::GetInstance(void)
{
if (!instanceS)
instanceS = new cSatipDiscover();
return instanceS;
}
bool cSatipDiscover::Initialize(cSatipDiscoverServers *serversP)
{
debug1("%s", __PRETTY_FUNCTION__);
if (instanceS) {
if (serversP) {
for (cSatipDiscoverServer *s = serversP->First(); s; s = serversP->Next(s))
instanceS->AddServer(s->SrcAddress(), s->IpAddress(), s->IpPort(), s->Model(), s->Filters(), s->Description(), s->Quirk());
}
else
instanceS->Activate();
}
return true;
}
void cSatipDiscover::Destroy(void)
{
debug1("%s", __PRETTY_FUNCTION__);
if (instanceS)
instanceS->Deactivate();
}
size_t cSatipDiscover::HeaderCallback(char *ptrP, size_t sizeP, size_t nmembP, void *dataP)
{
cSatipDiscover *obj = reinterpret_cast<cSatipDiscover *>(dataP);
size_t len = sizeP * nmembP;
debug16("%s len=%zu", __PRETTY_FUNCTION__, len);
if (obj && (len > 0))
obj->headerBufferM.Add(ptrP, len);
return len;
}
size_t cSatipDiscover::DataCallback(char *ptrP, size_t sizeP, size_t nmembP, void *dataP)
{
cSatipDiscover *obj = reinterpret_cast<cSatipDiscover *>(dataP);
size_t len = sizeP * nmembP;
debug16("%s len=%zu", __PRETTY_FUNCTION__, len);
if (obj && (len > 0))
obj->dataBufferM.Add(ptrP, len);
return len;
}
int cSatipDiscover::DebugCallback(CURL *handleP, curl_infotype typeP, char *dataP, size_t sizeP, void *userPtrP)
{
cSatipDiscover *obj = reinterpret_cast<cSatipDiscover *>(userPtrP);
if (obj) {
switch (typeP) {
case CURLINFO_TEXT:
debug2("%s HTTP INFO %.*s", __PRETTY_FUNCTION__, (int)sizeP, dataP);
break;
case CURLINFO_HEADER_IN:
debug2("%s HTTP HEAD <<< %.*s", __PRETTY_FUNCTION__, (int)sizeP, dataP);
break;
case CURLINFO_HEADER_OUT:
debug2("%s HTTP HEAD >>>\n%.*s", __PRETTY_FUNCTION__, (int)sizeP, dataP);
break;
case CURLINFO_DATA_IN:
debug2("%s HTTP DATA <<< %.*s", __PRETTY_FUNCTION__, (int)sizeP, dataP);
break;
case CURLINFO_DATA_OUT:
debug2("%s HTTP DATA >>>\n%.*s", __PRETTY_FUNCTION__, (int)sizeP, dataP);
break;
default:
break;
}
}
return 0;
}
cSatipDiscover::cSatipDiscover()
: cThread("SATIP discover"),
mutexM(),
headerBufferM(),
dataBufferM(),
msearchM(*this),
probeUrlListM(),
handleM(curl_easy_init()),
sleepM(),
probeIntervalM(0),
serversM()
{
debug1("%s", __PRETTY_FUNCTION__);
}
cSatipDiscover::~cSatipDiscover()
{
debug1("%s", __PRETTY_FUNCTION__);
Deactivate();
cMutexLock MutexLock(&mutexM);
// Free allocated memory
if (handleM)
curl_easy_cleanup(handleM);
handleM = NULL;
probeUrlListM.Clear();
}
void cSatipDiscover::Activate(void)
{
// Start the thread
Start();
}
void cSatipDiscover::Deactivate(void)
{
debug1("%s", __PRETTY_FUNCTION__);
cMutexLock MutexLock(&mutexM);
sleepM.Signal();
if (Running())
Cancel(3);
}
void cSatipDiscover::Action(void)
{
debug1("%s Entering", __PRETTY_FUNCTION__);
probeIntervalM.Set(eProbeIntervalMs);
msearchM.Probe();
// Do the thread loop
while (Running()) {
cStringList tmp;
if (probeIntervalM.TimedOut()) {
probeIntervalM.Set(eProbeIntervalMs);
msearchM.Probe();
mutexM.Lock();
serversM.Cleanup(eCleanupTimeoutMs);
mutexM.Unlock();
}
mutexM.Lock();
if (probeUrlListM.Size()) {
for (int i = 0; i < probeUrlListM.Size(); ++i)
tmp.Insert(strdup(probeUrlListM.At(i)));
probeUrlListM.Clear();
}
mutexM.Unlock();
if (tmp.Size()) {
for (int i = 0; i < tmp.Size(); ++i)
Fetch(tmp.At(i));
tmp.Clear();
}
// to avoid busy loop and reduce cpu load
sleepM.Wait(eSleepTimeoutMs);
}
debug1("%s Exiting", __PRETTY_FUNCTION__);
}
void cSatipDiscover::Fetch(const char *urlP)
{
debug1("%s (%s)", __PRETTY_FUNCTION__, urlP);
if (handleM && !isempty(urlP)) {
const char *addr = NULL;
long rc = 0;
CURLcode res = CURLE_OK;
// Verbose output
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_VERBOSE, 1L);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_DEBUGFUNCTION, cSatipDiscover::DebugCallback);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_DEBUGDATA, this);
// Set header and data callbacks
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_HEADERFUNCTION, cSatipDiscover::HeaderCallback);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEHEADER, this);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEFUNCTION, cSatipDiscover::DataCallback);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEDATA, 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", PLUGIN_NAME_I18N, VERSION));
// Set URL
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_URL, urlP);
// Fetch the data
SATIP_CURL_EASY_PERFORM(handleM);
SATIP_CURL_EASY_GETINFO(handleM, CURLINFO_RESPONSE_CODE, &rc);
SATIP_CURL_EASY_GETINFO(handleM, CURLINFO_PRIMARY_IP, &addr);
if (rc == 200) {
ParseDeviceInfo(addr, ParseRtspPort());
headerBufferM.Reset();
dataBufferM.Reset();
}
else
error("Discovery detected invalid status code: %ld", rc);
}
}
int cSatipDiscover::ParseRtspPort(void)
{
debug1("%s", __PRETTY_FUNCTION__);
char *s, *p = headerBufferM.Data();
char *r = strtok_r(p, "\r\n", &s);
int port = SATIP_DEFAULT_RTSP_PORT;
while (r) {
debug16("%s (%zu): %s", __PRETTY_FUNCTION__, headerBufferM.Size(), r);
r = skipspace(r);
if (strstr(r, "X-SATIP-RTSP-Port")) {
int tmp = -1;
if (sscanf(r, "X-SATIP-RTSP-Port:%11d", &tmp) == 1) {
port = tmp;
break;
}
}
r = strtok_r(NULL, "\r\n", &s);
}
return port;
}
void cSatipDiscover::ParseDeviceInfo(const char *addrP, const int portP)
{
debug1("%s (%s, %d)", __PRETTY_FUNCTION__, addrP, portP);
const char *desc = NULL, *model = NULL;
#ifdef USE_TINYXML
TiXmlDocument doc;
doc.Parse(dataBufferM.Data());
TiXmlHandle docHandle(&doc);
TiXmlElement *descElement = docHandle.FirstChild("root").FirstChild("device").FirstChild("friendlyName").ToElement();
if (descElement)
desc = descElement->GetText() ? descElement->GetText() : "MyBrokenHardware";
TiXmlElement *modelElement = docHandle.FirstChild("root").FirstChild("device").FirstChild("satip:X_SATIPCAP").ToElement();
if (modelElement)
model = modelElement->GetText() ? modelElement->GetText() : "DVBS2-1";
#else
pugi::xml_document doc;
if (doc.load_buffer(dataBufferM.Data(), dataBufferM.Size())) {
pugi::xml_node descNode = doc.first_element_by_path("root/device/friendlyName");
if (descNode)
desc = descNode.text().as_string("MyBrokenHardware");
pugi::xml_node modelNode = doc.first_element_by_path("root/device/satip:X_SATIPCAP");
if (modelNode)
model = modelNode.text().as_string("DVBS2-1");
}
#endif
AddServer(NULL, addrP, portP, model, NULL, desc, cSatipServer::eSatipQuirkNone);
}
void cSatipDiscover::AddServer(const char *srcAddrP, const char *addrP, const int portP, const char *modelP, const char *filtersP, const char *descP, const int quirkP)
{
debug1("%s (%s, %s, %d, %s, %s, %s, %d)", __PRETTY_FUNCTION__, srcAddrP, addrP, portP, modelP, filtersP, descP, quirkP);
cMutexLock MutexLock(&mutexM);
if (SatipConfig.GetUseSingleModelServers() && modelP && !isempty(modelP)) {
int n = 0;
char *s, *p = strdup(modelP);
char *r = strtok_r(p, ",", &s);
while (r) {
r = skipspace(r);
cString desc = cString::sprintf("%s #%d", !isempty(descP) ? descP : "MyBrokenHardware", n++);
cSatipServer *tmp = new cSatipServer(srcAddrP, addrP, portP, r, filtersP, desc, quirkP);
if (!serversM.Update(tmp)) {
info("Adding server '%s|%s|%s' Bind: %s Filters: %s CI: %s Quirks: %s", tmp->Address(), tmp->Model(), tmp->Description(), !isempty(tmp->SrcAddress()) ? tmp->SrcAddress() : "default", !isempty(tmp->Filters()) ? tmp->Filters() : "none", tmp->HasCI() ? "yes" : "no", tmp->HasQuirk() ? tmp->Quirks() : "none");
serversM.Add(tmp);
}
else
DELETENULL(tmp);
r = strtok_r(NULL, ",", &s);
}
FREE_POINTER(p);
}
else {
cSatipServer *tmp = new cSatipServer(srcAddrP, addrP, portP, modelP, filtersP, descP, quirkP);
if (!serversM.Update(tmp)) {
info("Adding server '%s|%s|%s' Bind: %s Filters: %s CI: %s Quirks: %s", tmp->Address(), tmp->Model(), tmp->Description(), !isempty(tmp->SrcAddress()) ? tmp->SrcAddress() : "default", !isempty(tmp->Filters()) ? tmp->Filters() : "none", tmp->HasCI() ? "yes" : "no", tmp->HasQuirk() ? tmp->Quirks() : "none");
serversM.Add(tmp);
}
else
DELETENULL(tmp);
}
}
int cSatipDiscover::GetServerCount(void)
{
debug16("%s", __PRETTY_FUNCTION__);
cMutexLock MutexLock(&mutexM);
return serversM.Count();
}
cSatipServer *cSatipDiscover::AssignServer(int deviceIdP, int sourceP, int transponderP, int systemP)
{
debug16("%s (%d, %d, %d, %d)", __PRETTY_FUNCTION__, deviceIdP, sourceP, transponderP, systemP);
cMutexLock MutexLock(&mutexM);
return serversM.Assign(deviceIdP, sourceP, transponderP, systemP);
}
cSatipServer *cSatipDiscover::GetServer(int sourceP)
{
debug16("%s (%d)", __PRETTY_FUNCTION__, sourceP);
cMutexLock MutexLock(&mutexM);
return serversM.Find(sourceP);
}
cSatipServer *cSatipDiscover::GetServer(cSatipServer *serverP)
{
debug16("%s", __PRETTY_FUNCTION__);
cMutexLock MutexLock(&mutexM);
return serversM.Find(serverP);
}
cSatipServers *cSatipDiscover::GetServers(void)
{
debug16("%s", __PRETTY_FUNCTION__);
cMutexLock MutexLock(&mutexM);
return &serversM;
}
cString cSatipDiscover::GetServerString(cSatipServer *serverP)
{
debug16("%s", __PRETTY_FUNCTION__);
cMutexLock MutexLock(&mutexM);
return serversM.GetString(serverP);
}
cString cSatipDiscover::GetServerList(void)
{
debug16("%s", __PRETTY_FUNCTION__);
cMutexLock MutexLock(&mutexM);
return serversM.List();
}
void cSatipDiscover::ActivateServer(cSatipServer *serverP, bool onOffP)
{
debug16("%s (, %d)", __PRETTY_FUNCTION__, onOffP);
cMutexLock MutexLock(&mutexM);
serversM.Activate(serverP, onOffP);
}
void cSatipDiscover::AttachServer(cSatipServer *serverP, int deviceIdP, int transponderP)
{
debug16("%s (, %d, %d)", __PRETTY_FUNCTION__, deviceIdP, transponderP);
cMutexLock MutexLock(&mutexM);
serversM.Attach(serverP, deviceIdP, transponderP);
}
void cSatipDiscover::DetachServer(cSatipServer *serverP, int deviceIdP, int transponderP)
{
debug16("%s (, %d, %d)", __PRETTY_FUNCTION__, deviceIdP, transponderP);
cMutexLock MutexLock(&mutexM);
serversM.Detach(serverP, deviceIdP, transponderP);
}
bool cSatipDiscover::IsServerQuirk(cSatipServer *serverP, int quirkP)
{
debug16("%s (, %d)", __PRETTY_FUNCTION__, quirkP);
cMutexLock MutexLock(&mutexM);
return serversM.IsQuirk(serverP, quirkP);
}
bool cSatipDiscover::HasServerCI(cSatipServer *serverP)
{
debug16("%s", __PRETTY_FUNCTION__);
cMutexLock MutexLock(&mutexM);
return serversM.HasCI(serverP);
}
cString cSatipDiscover::GetSourceAddress(cSatipServer *serverP)
{
debug16("%s", __PRETTY_FUNCTION__);
cMutexLock MutexLock(&mutexM);
return serversM.GetSrcAddress(serverP);
}
cString cSatipDiscover::GetServerAddress(cSatipServer *serverP)
{
debug16("%s", __PRETTY_FUNCTION__);
cMutexLock MutexLock(&mutexM);
return serversM.GetAddress(serverP);
}
int cSatipDiscover::GetServerPort(cSatipServer *serverP)
{
debug16("%s", __PRETTY_FUNCTION__);
cMutexLock MutexLock(&mutexM);
return serversM.GetPort(serverP);
}
int cSatipDiscover::NumProvidedSystems(void)
{
debug16("%s", __PRETTY_FUNCTION__);
cMutexLock MutexLock(&mutexM);
return serversM.NumProvidedSystems();
}
void cSatipDiscover::SetUrl(const char *urlP)
{
debug16("%s (%s)", __PRETTY_FUNCTION__, urlP);
mutexM.Lock();
probeUrlListM.Insert(strdup(urlP));
mutexM.Unlock();
sleepM.Signal();
}
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