mirror of
https://projects.vdr-developer.org/git/vdr-plugin-streamdev.git
synced 2023-10-10 19:16:51 +02:00
356 lines
9.9 KiB
C
356 lines
9.9 KiB
C
/*
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* $Id: connectionHTTP.c,v 1.21 2010/08/03 10:46:41 schmirl Exp $
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*/
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#include <ctype.h>
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#include "server/connectionHTTP.h"
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#include "server/menuHTTP.h"
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#include "server/server.h"
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#include "server/setup.h"
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cConnectionHTTP::cConnectionHTTP(void):
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cServerConnection("HTTP"),
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m_Status(hsRequest),
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m_LiveStreamer(NULL),
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m_Channel(NULL),
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m_StreamType((eStreamType)StreamdevServerSetup.HTTPStreamType),
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m_ChannelList(NULL)
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{
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Dprintf("constructor hsRequest\n");
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m_Apid[0] = m_Apid[1] = 0;
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m_Dpid[0] = m_Dpid[1] = 0;
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}
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cConnectionHTTP::~cConnectionHTTP()
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{
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delete m_LiveStreamer;
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}
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bool cConnectionHTTP::CanAuthenticate(void)
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{
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return opt_auth != NULL;
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}
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bool cConnectionHTTP::Command(char *Cmd)
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{
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Dprintf("command %s\n", Cmd);
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switch (m_Status) {
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case hsRequest:
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// parse METHOD PATH[?QUERY] VERSION
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{
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char *p, *q, *v;
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p = strchr(Cmd, ' ');
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if (p) {
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*p = 0;
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v = strchr(++p, ' ');
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if (v) {
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*v = 0;
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SetHeader("REQUEST_METHOD", Cmd);
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q = strchr(p, '?');
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if (q)
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*q = 0;
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SetHeader("QUERY_STRING", q ? ++q : "");
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SetHeader("PATH_INFO", p);
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m_Status = hsHeaders;
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return true;
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}
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}
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}
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return false;
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case hsHeaders:
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if (*Cmd == '\0') {
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m_Status = hsBody;
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return ProcessRequest();
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}
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else if (isspace(*Cmd)) {
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; //TODO: multi-line header
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}
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else {
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// convert header name to CGI conventions:
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// uppercase, '-' replaced with '_', prefix "HTTP_"
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char *p;
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for (p = Cmd; *p != 0 && *p != ':'; p++) {
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if (*p == '-')
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*p = '_';
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else
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*p = toupper(*p);
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}
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if (*p == ':') {
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*p = 0;
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p = skipspace(++p);
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// don't disclose Authorization header
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if (strcmp(Cmd, "AUTHORIZATION") == 0) {
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char *q;
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for (q = p; *q != 0 && *q != ' '; q++)
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*q = toupper(*q);
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if (p != q) {
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*q = 0;
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SetHeader("AUTH_TYPE", p);
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m_Authorization = (std::string) skipspace(++q);
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}
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}
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else
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SetHeader(Cmd, p, "HTTP_");
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}
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}
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return true;
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default:
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// skip additional blank lines
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if (*Cmd == '\0')
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return true;
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break;
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}
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return false; // ??? shouldn't happen
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}
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bool cConnectionHTTP::ProcessRequest(void)
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{
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// keys for Headers() hash
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const static std::string AUTH_TYPE("AUTH_TYPE");
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const static std::string REQUEST_METHOD("REQUEST_METHOD");
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const static std::string PATH_INFO("PATH_INFO");
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Dprintf("process\n");
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if (!StreamdevHosts.Acceptable(RemoteIpAddr())) {
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bool authOk = opt_auth && !m_Authorization.empty();
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if (authOk) {
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tStrStrMap::const_iterator it = Headers().find(AUTH_TYPE);
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if (it == Headers().end()) {
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// no authorization header present
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authOk = false;
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}
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else if (it->second.compare("BASIC") == 0) {
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// basic auth
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authOk &= m_Authorization.compare(opt_auth) == 0;
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}
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else {
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// unsupported auth type
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authOk = false;
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}
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}
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if (!authOk) {
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isyslog("streamdev-server: HTTP authorization required");
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DeferClose();
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return Respond("HTTP/1.0 401 Authorization Required")
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&& Respond("WWW-authenticate: basic Realm=\"Streamdev-Server\")")
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&& Respond("");
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}
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}
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tStrStrMap::const_iterator it_method = Headers().find(REQUEST_METHOD);
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tStrStrMap::const_iterator it_pathinfo = Headers().find(PATH_INFO);
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if (it_method == Headers().end() || it_pathinfo == Headers().end()) {
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// should never happen
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esyslog("streamdev-server connectionHTTP: Missing method or pathinfo");
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} else if (it_method->second.compare("GET") == 0 && ProcessURI(it_pathinfo->second)) {
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if (m_ChannelList)
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return Respond("%s", true, m_ChannelList->HttpHeader().c_str());
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else if (m_Channel != NULL) {
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cDevice *device = NULL;
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if (ProvidesChannel(m_Channel, 0))
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device = GetDevice(m_Channel, 0);
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if (device != NULL) {
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device->SwitchChannel(m_Channel, false);
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m_LiveStreamer = new cStreamdevLiveStreamer(0, this);
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if (m_LiveStreamer->SetChannel(m_Channel, m_StreamType, m_Apid[0] ? m_Apid : NULL, m_Dpid[0] ? m_Dpid : NULL)) {
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m_LiveStreamer->SetDevice(device);
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if (!SetDSCP())
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LOG_ERROR_STR("unable to set DSCP sockopt");
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if (m_StreamType == stEXT) {
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return Respond("HTTP/1.0 200 OK");
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} else if (ISRADIO(m_Channel) || (m_StreamType == stES && (m_Apid[0] || m_Dpid[0]))) {
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return Respond("HTTP/1.0 200 OK")
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&& Respond("Content-Type: audio/mpeg")
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&& Respond("icy-name: %s", true, m_Channel->Name())
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&& Respond("");
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} else {
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return Respond("HTTP/1.0 200 OK")
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&& Respond("Content-Type: video/mpeg")
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&& Respond("");
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}
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}
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DELETENULL(m_LiveStreamer);
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}
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DeferClose();
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return Respond("HTTP/1.0 409 Channel not available")
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&& Respond("");
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}
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else {
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DeferClose();
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return Respond("HTTP/1.0 404 not found")
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&& Respond("");
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}
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} else if (it_method->second.compare("HEAD") == 0 && ProcessURI(it_pathinfo->second)) {
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DeferClose();
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if (m_ChannelList)
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return Respond("%s", true, m_ChannelList->HttpHeader().c_str());
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else if (m_Channel != NULL) {
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if (ProvidesChannel(m_Channel, 0)) {
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if (m_StreamType == stEXT) {
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// TODO
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return Respond("HTTP/1.0 200 OK")
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&& Respond("");
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} else if (ISRADIO(m_Channel) || (m_StreamType == stES && (m_Apid[0] || m_Dpid[0]))) {
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return Respond("HTTP/1.0 200 OK")
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&& Respond("Content-Type: audio/mpeg")
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&& Respond("icy-name: %s", true, m_Channel->Name())
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&& Respond("");
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} else {
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return Respond("HTTP/1.0 200 OK")
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&& Respond("Content-Type: video/mpeg")
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&& Respond("");
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}
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}
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return Respond("HTTP/1.0 409 Channel not available")
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&& Respond("");
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}
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else {
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return Respond("HTTP/1.0 404 not found")
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&& Respond("");
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}
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}
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DeferClose();
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return Respond("HTTP/1.0 400 Bad Request")
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&& Respond("");
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}
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void cConnectionHTTP::Flushed(void)
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{
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std::string line;
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if (m_Status != hsBody)
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return;
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if (m_ChannelList) {
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if (m_ChannelList->HasNext()) {
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if (!Respond("%s", true, m_ChannelList->Next().c_str()))
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DeferClose();
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}
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else {
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DELETENULL(m_ChannelList);
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m_Status = hsFinished;
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DeferClose();
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}
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return;
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}
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else if (m_Channel != NULL) {
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Dprintf("streamer start\n");
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m_LiveStreamer->Start(this);
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m_Status = hsFinished;
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}
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else {
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// should never be reached
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esyslog("streamdev-server cConnectionHTTP::Flushed(): no job to do");
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m_Status = hsFinished;
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}
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}
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cChannelList* cConnectionHTTP::ChannelListFromString(const std::string& Path, const std::string& Filebase, const std::string& Fileext) const
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{
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// keys for Headers() hash
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const static std::string QUERY_STRING("QUERY_STRING");
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const static std::string HOST("HTTP_HOST");
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tStrStrMap::const_iterator it_query = Headers().find(QUERY_STRING);
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const std::string& query = it_query == Headers().end() ? "" : it_query->second;
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std::string groupTarget;
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cChannelIterator *iterator = NULL;
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if (Filebase.compare("tree") == 0) {
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const cChannel* c = NULL;
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size_t groupIndex = query.find("group=");
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if (groupIndex != std::string::npos)
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c = cChannelList::GetGroup(atoi(query.c_str() + groupIndex + 6));
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iterator = new cListTree(c);
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groupTarget = Filebase + Fileext;
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} else if (Filebase.compare("groups") == 0) {
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iterator = new cListGroups();
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groupTarget = (std::string) "group" + Fileext;
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} else if (Filebase.compare("group") == 0) {
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const cChannel* c = NULL;
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size_t groupIndex = query.find("group=");
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if (groupIndex != std::string::npos)
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c = cChannelList::GetGroup(atoi(query.c_str() + groupIndex + 6));
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iterator = new cListGroup(c);
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} else if (Filebase.compare("channels") == 0) {
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iterator = new cListChannels();
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} else if (Filebase.compare("all") == 0 ||
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(Filebase.empty() && Fileext.empty())) {
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iterator = new cListAll();
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}
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if (iterator) {
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if (Filebase.empty() || Fileext.compare(".htm") == 0 || Fileext.compare(".html") == 0) {
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std::string self = Filebase + Fileext;
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if (!query.empty())
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self += '?' + query;
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return new cHtmlChannelList(iterator, m_StreamType, self.c_str(), groupTarget.c_str());
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} else if (Fileext.compare(".m3u") == 0) {
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std::string base;
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tStrStrMap::const_iterator it = Headers().find(HOST);
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if (it != Headers().end())
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base = "http://" + it->second + "/";
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else
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base = (std::string) "http://" + LocalIp() + ":" +
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(const char*) itoa(StreamdevServerSetup.HTTPServerPort) + "/";
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base += Path;
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return new cM3uChannelList(iterator, base.c_str());
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} else {
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delete iterator;
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}
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}
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return NULL;
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}
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bool cConnectionHTTP::ProcessURI(const std::string& PathInfo)
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{
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std::string filespec, fileext;
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size_t file_pos = PathInfo.rfind('/');
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if (file_pos != std::string::npos) {
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size_t ext_pos = PathInfo.rfind('.');
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// file basename with leading / stripped off
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filespec = PathInfo.substr(file_pos + 1, ext_pos - file_pos - 1);
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if (ext_pos != std::string::npos)
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// file extension including leading .
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fileext = PathInfo.substr(ext_pos);
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}
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if (fileext.length() > 5) {
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//probably not an extension
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filespec += fileext;
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fileext.clear();
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}
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// Streamtype with leading / stripped off
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std::string type = PathInfo.substr(1, PathInfo.find_first_of("/;", 1) - 1);
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const char* pType = type.c_str();
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if (strcasecmp(pType, "PS") == 0) {
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m_StreamType = stPS;
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} else if (strcasecmp(pType, "PES") == 0) {
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m_StreamType = stPES;
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} else if (strcasecmp(pType, "TS") == 0) {
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m_StreamType = stTS;
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} else if (strcasecmp(pType, "ES") == 0) {
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m_StreamType = stES;
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} else if (strcasecmp(pType, "EXT") == 0) {
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m_StreamType = stEXT;
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}
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Dprintf("before channelfromstring: type(%s) filespec(%s) fileext(%s)\n", type.c_str(), filespec.c_str(), fileext.c_str());
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if ((m_ChannelList = ChannelListFromString(PathInfo.substr(1, file_pos), filespec.c_str(), fileext.c_str())) != NULL) {
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Dprintf("Channel list requested\n");
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return true;
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} else if ((m_Channel = ChannelFromString(filespec.c_str(), &m_Apid[0], &m_Dpid[0])) != NULL) {
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Dprintf("Channel found. Apid/Dpid is %d/%d\n", m_Apid[0], m_Dpid[0]);
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return true;
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} else
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return false;
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}
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