426 lines
16 KiB
C++
426 lines
16 KiB
C++
#include <sys/stat.h>
|
|
#include "output_http.h"
|
|
#include <mist/stream.h>
|
|
#include <mist/checksum.h>
|
|
#include <set>
|
|
|
|
namespace Mist {
|
|
HTTPOutput::HTTPOutput(Socket::Connection & conn) : Output(conn) {
|
|
if (config->getString("ip").size()){
|
|
myConn.setHost(config->getString("ip"));
|
|
}
|
|
if (config->getString("streamname").size()){
|
|
streamName = config->getString("streamname");
|
|
}
|
|
config->activate();
|
|
}
|
|
|
|
void HTTPOutput::init(Util::Config * cfg){
|
|
Output::init(cfg);
|
|
capa["deps"] = "HTTP";
|
|
capa["forward"]["streamname"]["name"] = "Stream";
|
|
capa["forward"]["streamname"]["help"] = "What streamname to serve.";
|
|
capa["forward"]["streamname"]["type"] = "str";
|
|
capa["forward"]["streamname"]["option"] = "--stream";
|
|
capa["forward"]["ip"]["name"] = "IP";
|
|
capa["forward"]["ip"]["help"] = "IP of forwarded connection.";
|
|
capa["forward"]["ip"]["type"] = "str";
|
|
capa["forward"]["ip"]["option"] = "--ip";
|
|
cfg->addOption("streamname", JSON::fromString("{\"arg\":\"string\",\"short\":\"s\",\"long\":\"stream\",\"help\":\"The name of the stream that this connector will transmit.\"}"));
|
|
cfg->addOption("ip", JSON::fromString("{\"arg\":\"string\",\"short\":\"I\",\"long\":\"ip\",\"help\":\"IP address of connection on stdio.\"}"));
|
|
cfg->addBasicConnectorOptions(capa);
|
|
config = cfg;
|
|
}
|
|
|
|
void HTTPOutput::onFail(){
|
|
H.Clean(); //make sure no parts of old requests are left in any buffers
|
|
H.SetBody("Stream not found. Sorry, we tried.");
|
|
H.SendResponse("404", "Stream not found", myConn);
|
|
Output::onFail();
|
|
}
|
|
|
|
bool isMatch(const std::string & url, const std::string & m, std::string & streamname){
|
|
size_t found = m.find('$');
|
|
if (found != std::string::npos){
|
|
if (url.size() < m.size()){return false;}
|
|
if (m.substr(0, found) == url.substr(0, found) && m.substr(found+1) == url.substr(url.size() - (m.size() - found) + 1)){
|
|
streamname = url.substr(found, url.size() - m.size() + 1);
|
|
return true;
|
|
}
|
|
}
|
|
return (url == m);
|
|
}
|
|
|
|
bool isPrefix(const std::string & url, const std::string & m, std::string & streamname){
|
|
size_t found = m.find('$');
|
|
if (found != std::string::npos){
|
|
if (url.size() < m.size()){return false;}
|
|
size_t found_suf = url.find(m.substr(found+1), found);
|
|
if (m.substr(0, found) == url.substr(0, found) && found_suf != std::string::npos){
|
|
streamname = url.substr(found, found_suf - found);
|
|
return true;
|
|
}
|
|
}else{
|
|
return (url.substr(0, m.size()) == m);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/// - anything else: The request should be dispatched to a connector on the named socket.
|
|
std::string HTTPOutput::getHandler(){
|
|
std::string url = H.getUrl();
|
|
//check the current output first, the most common case
|
|
if (capa.isMember("url_match") || capa.isMember("url_prefix")){
|
|
bool match = false;
|
|
std::string streamname;
|
|
//if there is a matcher, try to match
|
|
if (capa.isMember("url_match")){
|
|
if (capa["url_match"].isArray()){
|
|
jsonForEach(capa["url_match"], it) {
|
|
match |= isMatch(url, it->asStringRef(), streamname);
|
|
}
|
|
}
|
|
if (capa["url_match"].isString()){
|
|
match |= isMatch(url, capa["url_match"].asStringRef(), streamname);
|
|
}
|
|
}
|
|
//if there is a prefix, try to match
|
|
if (capa.isMember("url_prefix")){
|
|
if (capa["url_prefix"].isArray()){
|
|
jsonForEach(capa["url_prefix"], it) {
|
|
match |= isPrefix(url, it->asStringRef(), streamname);
|
|
}
|
|
}
|
|
if (capa["url_prefix"].isString()){
|
|
match |= isPrefix(url, capa["url_prefix"].asStringRef(), streamname);
|
|
}
|
|
}
|
|
if (match){
|
|
if (streamname.size()){
|
|
Util::sanitizeName(streamname);
|
|
H.SetVar("stream", streamname);
|
|
}
|
|
return capa["name"].asStringRef();
|
|
}
|
|
}
|
|
|
|
//loop over the connectors
|
|
IPC::semaphore configLock(SEM_CONF, O_CREAT | O_RDWR, ACCESSPERMS, 1);
|
|
configLock.wait();
|
|
IPC::sharedPage serverCfg(SHM_CONF, DEFAULT_CONF_PAGE_SIZE);
|
|
DTSC::Scan capa = DTSC::Scan(serverCfg.mapped, serverCfg.len).getMember("capabilities").getMember("connectors");
|
|
unsigned int capa_ctr = capa.getSize();
|
|
for (unsigned int i = 0; i < capa_ctr; ++i){
|
|
DTSC::Scan c = capa.getIndice(i);
|
|
//if it depends on HTTP and has a match or prefix...
|
|
if ((c.getMember("name").asString() == "HTTP" || c.getMember("deps").asString() == "HTTP") && (c.getMember("url_match") || c.getMember("url_prefix"))){
|
|
bool match = false;
|
|
std::string streamname;
|
|
//if there is a matcher, try to match
|
|
if (c.getMember("url_match")){
|
|
if (c.getMember("url_match").getSize()){
|
|
for (unsigned int j = 0; j < c.getMember("url_match").getSize(); ++j){
|
|
match |= isMatch(url, c.getMember("url_match").getIndice(j).asString(), streamname);
|
|
}
|
|
}else{
|
|
match |= isMatch(url, c.getMember("url_match").asString(), streamname);
|
|
}
|
|
}
|
|
//if there is a prefix, try to match
|
|
if (c.getMember("url_prefix")){
|
|
if (c.getMember("url_prefix").getSize()){
|
|
for (unsigned int j = 0; j < c.getMember("url_prefix").getSize(); ++j){
|
|
match |= isPrefix(url, c.getMember("url_prefix").getIndice(j).asString(), streamname);
|
|
}
|
|
}else{
|
|
match |= isPrefix(url, c.getMember("url_prefix").asString(), streamname);
|
|
}
|
|
}
|
|
if (match){
|
|
if (streamname.size()){
|
|
Util::sanitizeName(streamname);
|
|
H.SetVar("stream", streamname);
|
|
}
|
|
configLock.post();
|
|
configLock.close();
|
|
return capa.getIndiceName(i);
|
|
}
|
|
}
|
|
}
|
|
configLock.post();
|
|
configLock.close();
|
|
return "";
|
|
}
|
|
|
|
void HTTPOutput::requestHandler(){
|
|
if (myConn.Received().size() && myConn.spool()){
|
|
DEBUG_MSG(DLVL_DONTEVEN, "onRequest");
|
|
onRequest();
|
|
}else{
|
|
if (!myConn.Received().size()){
|
|
if (myConn.peek() && H.Read(myConn)){
|
|
std::string handler = getHandler();
|
|
DEBUG_MSG(DLVL_MEDIUM, "Received request: %s => %s (%s)", H.getUrl().c_str(), handler.c_str(), H.GetVar("stream").c_str());
|
|
if (!handler.size()){
|
|
H.Clean();
|
|
H.SetHeader("Server", "MistServer/" PACKAGE_VERSION);
|
|
H.SetBody("<!DOCTYPE html><html><head><title>Unsupported Media Type</title></head><body><h1>Unsupported Media Type</h1>The server isn't quite sure what you wanted to receive from it.</body></html>");
|
|
H.SendResponse("415", "Unsupported Media Type", myConn);
|
|
myConn.close();
|
|
return;
|
|
}
|
|
if (handler != capa["name"].asStringRef() || H.GetVar("stream") != streamName){
|
|
DEBUG_MSG(DLVL_MEDIUM, "Switching from %s (%s) to %s (%s)", capa["name"].asStringRef().c_str(), streamName.c_str(), handler.c_str(), H.GetVar("stream").c_str());
|
|
streamName = H.GetVar("stream");
|
|
nProxy.userClient.finish();
|
|
statsPage.finish();
|
|
reConnector(handler);
|
|
H.Clean();
|
|
if (myConn.connected()){
|
|
FAIL_MSG("Request failed - no connector started");
|
|
myConn.close();
|
|
}
|
|
return;
|
|
}else{
|
|
H.Clean();
|
|
myConn.Received().clear();
|
|
myConn.spool();
|
|
DEBUG_MSG(DLVL_DONTEVEN, "onRequest");
|
|
onRequest();
|
|
}
|
|
}else{
|
|
H.Clean();
|
|
if (myConn.Received().size()){
|
|
myConn.Received().clear();
|
|
myConn.spool();
|
|
DEBUG_MSG(DLVL_DONTEVEN, "onRequest");
|
|
onRequest();
|
|
}
|
|
if (!myConn.Received().size()){
|
|
Util::sleep(500);
|
|
}
|
|
}
|
|
}else{
|
|
if (!isBlocking && !parseData){
|
|
Util::sleep(500);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void HTTPOutput::onRequest(){
|
|
while (H.Read(myConn)){
|
|
if (hasSessionIDs()){
|
|
if (H.GetVar("sessId").size()){
|
|
std::string ua = H.GetVar("sessId");
|
|
crc = checksum::crc32(0, ua.data(), ua.size());
|
|
}else{
|
|
std::string ua = JSON::Value((long long)getpid()).asString();
|
|
crc = checksum::crc32(0, ua.data(), ua.size());
|
|
}
|
|
}else{
|
|
std::string ua = H.GetHeader("User-Agent") + H.GetHeader("X-Playback-Session-Id");
|
|
crc = checksum::crc32(0, ua.data(), ua.size());
|
|
}
|
|
|
|
INFO_MSG("Received request %s", H.getUrl().c_str());
|
|
initialize();
|
|
if (H.GetVar("audio") != "" || H.GetVar("video") != ""){
|
|
selectedTracks.clear();
|
|
if (H.GetVar("audio") != ""){
|
|
selectedTracks.insert(JSON::Value(H.GetVar("audio")).asInt());
|
|
}
|
|
if (H.GetVar("video") != ""){
|
|
selectedTracks.insert(JSON::Value(H.GetVar("video")).asInt());
|
|
}
|
|
selectDefaultTracks();
|
|
std::set<unsigned long> toRemove;
|
|
if (H.GetVar("video") == "0"){
|
|
for (std::set<unsigned long>::iterator it = selectedTracks.begin(); it != selectedTracks.end(); it++){
|
|
if (myMeta.tracks.at(*it).type=="video"){
|
|
toRemove.insert(*it);
|
|
}
|
|
}
|
|
}
|
|
if (H.GetVar("audio") == "0"){
|
|
for (std::set<unsigned long>::iterator it = selectedTracks.begin(); it != selectedTracks.end(); it++){
|
|
if (myMeta.tracks.at(*it).type=="audio"){
|
|
toRemove.insert(*it);
|
|
}
|
|
}
|
|
}
|
|
//remove those from selectedtracks
|
|
for (std::set<unsigned long>::iterator it = toRemove.begin(); it != toRemove.end(); it++){
|
|
selectedTracks.erase(*it);
|
|
}
|
|
}else{
|
|
selectDefaultTracks();
|
|
}
|
|
|
|
onHTTP();
|
|
if (!H.bufferChunks){
|
|
H.Clean();
|
|
}
|
|
}
|
|
}
|
|
|
|
static inline void builPipedPart(JSON::Value & p, char * argarr[], int & argnum, JSON::Value & argset){
|
|
jsonForEach(argset, it) {
|
|
if (it->isMember("option") && p.isMember(it.key())){
|
|
if (it->isMember("type")){
|
|
if ((*it)["type"].asStringRef() == "str" && !p[it.key()].isString()){
|
|
p[it.key()] = p[it.key()].asString();
|
|
}
|
|
if (((*it)["type"].asStringRef() == "uint" || (*it)["type"].asStringRef() == "int") && !p[it.key()].isInt()){
|
|
p[it.key()] = JSON::Value(p[it.key()].asInt()).asString();
|
|
}
|
|
}
|
|
if (p[it.key()].asStringRef().size() > 0){
|
|
argarr[argnum++] = (char*)((*it)["option"].c_str());
|
|
argarr[argnum++] = (char*)(p[it.key()].c_str());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
///\brief Handles requests by starting a corresponding output process.
|
|
///\param H The request to be handled
|
|
///\param conn The connection to the client that issued the request.
|
|
///\param connector The type of connector to be invoked.
|
|
void HTTPOutput::reConnector(std::string & connector){
|
|
//taken from CheckProtocols (controller_connectors.cpp)
|
|
char * argarr[20];
|
|
for (int i=0; i<20; i++){argarr[i] = 0;}
|
|
int id = -1;
|
|
|
|
IPC::semaphore configLock(SEM_CONF, O_CREAT | O_RDWR, ACCESSPERMS, 1);
|
|
configLock.wait();
|
|
IPC::sharedPage serverCfg(SHM_CONF, DEFAULT_CONF_PAGE_SIZE);
|
|
DTSC::Scan prots = DTSC::Scan(serverCfg.mapped, serverCfg.len).getMember("config").getMember("protocols");
|
|
unsigned int prots_ctr = prots.getSize();
|
|
|
|
for (unsigned int i=0; i < prots_ctr; ++i){
|
|
if (prots.getIndice(i).getMember("connector").asString() == connector) {
|
|
id = i;
|
|
break; //pick the first protocol in the list that matches the connector
|
|
}
|
|
}
|
|
if (id == -1) {
|
|
connector = connector + ".exe";
|
|
for (unsigned int i=0; i < prots_ctr; ++i){
|
|
if (prots.getIndice(i).getMember("connector").asString() == connector) {
|
|
id = i;
|
|
break; //pick the first protocol in the list that matches the connector
|
|
}
|
|
}
|
|
if (id == -1) {
|
|
connector = connector.substr(0, connector.size() - 4);
|
|
DEBUG_MSG(DLVL_ERROR, "No connector found for: %s", connector.c_str());
|
|
configLock.post();
|
|
configLock.close();
|
|
return;
|
|
}
|
|
}
|
|
|
|
DEBUG_MSG(DLVL_HIGH, "Connector found: %s", connector.c_str());
|
|
//build arguments for starting output process
|
|
|
|
std::string temphost=getConnectedHost();
|
|
std::string debuglevel = JSON::Value((long long)Util::Config::printDebugLevel).asString();
|
|
std::string tmparg = Util::getMyPath() + std::string("MistOut") + connector;
|
|
|
|
int argnum = 0;
|
|
argarr[argnum++] = (char*)tmparg.c_str();
|
|
JSON::Value p = prots.getIndice(id).asJSON();
|
|
JSON::Value pipedCapa = DTSC::Scan(serverCfg.mapped, serverCfg.len).getMember("capabilities").getMember("connectors").getMember(connector).asJSON();
|
|
configLock.post();
|
|
configLock.close();
|
|
argarr[argnum++] = (char*)"--ip";
|
|
argarr[argnum++] = (char*)(temphost.c_str());
|
|
argarr[argnum++] = (char*)"--stream";
|
|
argarr[argnum++] = (char*)(streamName.c_str());
|
|
//set the debug level if non-default
|
|
if (Util::Config::printDebugLevel != DEBUG){
|
|
argarr[argnum++] = (char*)"--debug";
|
|
argarr[argnum++] = (char*)(debuglevel.c_str());
|
|
}
|
|
if (pipedCapa.isMember("required")){builPipedPart(p, argarr, argnum, pipedCapa["required"]);}
|
|
if (pipedCapa.isMember("optional")){builPipedPart(p, argarr, argnum, pipedCapa["optional"]);}
|
|
|
|
///start new/better process
|
|
execv(argarr[0], argarr);
|
|
}
|
|
|
|
/// Parses a "Range: " header, setting byteStart and byteEnd.
|
|
/// Assumes byteStart and byteEnd are initialized to their minimum respectively maximum values when the function is called.
|
|
/// On error, byteEnd is set to zero and the function return false.
|
|
bool HTTPOutput::parseRange(uint64_t & byteStart, uint64_t & byteEnd){
|
|
std::string header = H.GetHeader("Range");
|
|
if (header.size() < 6 || header.substr(0, 6) != "bytes="){
|
|
byteEnd = 0;
|
|
WARN_MSG("Invalid range header: %s", header.c_str());
|
|
return false;
|
|
}
|
|
header.erase(0, 6);
|
|
//Do parsing of the rest of the header...
|
|
if (header.size() && header[0] == '-'){
|
|
//negative range = count from end
|
|
byteStart = 0;
|
|
for (unsigned int i = 1; i < header.size(); ++i){
|
|
if (header[i] >= '0' && header[i] <= '9'){
|
|
byteStart *= 10;
|
|
byteStart += header[i] - '0';
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
if (byteStart > byteEnd){
|
|
//entire file if starting before byte zero
|
|
byteStart = 0;
|
|
}else{
|
|
//start byteStart bytes before byteEnd
|
|
byteStart = byteEnd - byteStart;
|
|
}
|
|
MEDIUM_MSG("Range request: %" PRIu64 "-%" PRIu64 " (%s)", byteStart, byteEnd, header.c_str());
|
|
return true;
|
|
}
|
|
|
|
//Positive range
|
|
long long size = byteEnd;
|
|
byteEnd = 0;
|
|
byteStart = 0;
|
|
unsigned int i = 0;
|
|
for (; i < header.size(); ++i){
|
|
if (header[i] >= '0' && header[i] <= '9'){
|
|
byteStart *= 10;
|
|
byteStart += header[i] - '0';
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
if (header[i] != '-'){
|
|
WARN_MSG("Invalid range header: %s", header.c_str());
|
|
byteEnd = 0;
|
|
return false;
|
|
}
|
|
++i;
|
|
if (i < header.size()){
|
|
for (; i < header.size(); ++i){
|
|
if (header[i] >= '0' && header[i] <= '9'){
|
|
byteEnd *= 10;
|
|
byteEnd += header[i] - '0';
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
if (byteEnd > size){
|
|
byteEnd = size;
|
|
}
|
|
}else{
|
|
byteEnd = size;
|
|
}
|
|
MEDIUM_MSG("Range request: %" PRIu64 "-%" PRIu64 " (%s)", byteStart, byteEnd, header.c_str());
|
|
return true;
|
|
}
|
|
|
|
}
|