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vdr-plugin-streamdev/server/connectionHTTP.c

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/*
* $Id: connectionHTTP.c,v 1.21 2010/08/03 10:46:41 schmirl Exp $
*/
#include <ctype.h>
#include <time.h>
#include <stdarg.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <vdr/thread.h>
#include <vdr/recording.h>
#include "server/connectionHTTP.h"
#include "server/menuHTTP.h"
#include "server/server.h"
#include "server/setup.h"
cConnectionHTTP::cConnectionHTTP(void):
cServerConnection("HTTP"),
m_Status(hsRequest),
m_Streamer(NULL),
m_StreamType((eStreamType)StreamdevServerSetup.HTTPStreamType),
m_Channel(NULL),
m_RecPlayer(NULL),
m_ReplayPos(0),
m_ReplayFakeRange(false),
m_MenuList(NULL)
{
Dprintf("constructor hsRequest\n");
m_Apid[0] = m_Apid[1] = 0;
m_Dpid[0] = m_Dpid[1] = 0;
}
cConnectionHTTP::~cConnectionHTTP()
{
delete m_Streamer;
delete m_RecPlayer;
delete m_MenuList;
}
bool cConnectionHTTP::CanAuthenticate(void)
{
return opt_auth != NULL;
}
bool cConnectionHTTP::Command(char *Cmd)
{
Dprintf("command %s\n", Cmd);
switch (m_Status) {
case hsRequest:
// parse METHOD PATH[?QUERY] VERSION
{
char *p, *q, *v;
p = strchr(Cmd, ' ');
if (p) {
*p = 0;
v = strchr(++p, ' ');
if (v) {
*v = 0;
SetHeader("REQUEST_METHOD", Cmd);
q = strchr(p, '?');
if (q) {
*q = 0;
SetHeader("QUERY_STRING", q + 1);
while (q++) {
char *n = strchr(q, '&');
if (n)
*n = 0;
char *e = strchr(q, '=');
if (e)
*e++ = 0;
else
e = n ? n : v;
m_Params.insert(tStrStr(q, e));
q = n;
}
}
else
SetHeader("QUERY_STRING", "");
SetHeader("PATH_INFO", p);
m_Status = hsHeaders;
return true;
}
}
}
return false;
case hsHeaders:
if (*Cmd == '\0') {
m_Status = hsBody;
return ProcessRequest();
}
else if (isspace(*Cmd)) {
; //TODO: multi-line header
}
else {
// convert header name to CGI conventions:
// uppercase, '-' replaced with '_', prefix "HTTP_"
char *p;
for (p = Cmd; *p != 0 && *p != ':'; p++) {
if (*p == '-')
*p = '_';
else
*p = toupper(*p);
}
if (*p == ':') {
*p = 0;
p = skipspace(++p);
// don't disclose Authorization header
if (strcmp(Cmd, "AUTHORIZATION") == 0) {
char *q;
for (q = p; *q != 0 && *q != ' '; q++)
*q = toupper(*q);
if (p != q) {
*q = 0;
SetHeader("AUTH_TYPE", p);
m_Authorization = (std::string) skipspace(++q);
}
}
else
SetHeader(Cmd, p, "HTTP_");
}
}
return true;
default:
// skip additional blank lines
if (*Cmd == '\0')
return true;
break;
}
return false; // ??? shouldn't happen
}
bool cConnectionHTTP::ProcessRequest(void)
{
// keys for Headers() hash
const static std::string AUTH_TYPE("AUTH_TYPE");
const static std::string REQUEST_METHOD("REQUEST_METHOD");
const static std::string PATH_INFO("PATH_INFO");
Dprintf("process\n");
if (!StreamdevHosts.Acceptable(RemoteIpAddr())) {
bool authOk = opt_auth && !m_Authorization.empty();
if (authOk) {
tStrStrMap::const_iterator it = Headers().find(AUTH_TYPE);
if (it == Headers().end()) {
// no authorization header present
authOk = false;
}
else if (it->second.compare("BASIC") == 0) {
// basic auth
authOk &= m_Authorization.compare(opt_auth) == 0;
}
else {
// unsupported auth type
authOk = false;
}
}
if (!authOk) {
isyslog("streamdev-server: HTTP authorization required");
return HttpResponse(401, true, NULL, "WWW-authenticate: basic Realm=\"Streamdev-Server\"");
}
}
tStrStrMap::const_iterator it_method = Headers().find(REQUEST_METHOD);
tStrStrMap::const_iterator it_pathinfo = Headers().find(PATH_INFO);
if (it_method == Headers().end() || it_pathinfo == Headers().end()) {
// should never happen
esyslog("streamdev-server connectionHTTP: Missing method or pathinfo");
} else if (it_method->second.compare("GET") == 0 && ProcessURI(it_pathinfo->second)) {
if (m_MenuList)
return Respond("%s", true, m_MenuList->HttpHeader().c_str());
else if (m_Channel != NULL) {
cDevice *device = NULL;
if (ProvidesChannel(m_Channel, StreamdevServerSetup.HTTPPriority))
device = SwitchDevice(m_Channel, StreamdevServerSetup.HTTPPriority);
if (device != NULL) {
cStreamdevLiveStreamer* liveStreamer = new cStreamdevLiveStreamer(StreamdevServerSetup.HTTPPriority, this);
m_Streamer = liveStreamer;
if (liveStreamer->SetChannel(m_Channel, m_StreamType, m_Apid[0] ? m_Apid : NULL, m_Dpid[0] ? m_Dpid : NULL)) {
liveStreamer->SetDevice(device);
if (!SetDSCP())
LOG_ERROR_STR("unable to set DSCP sockopt");
if (m_StreamType == stEXT) {
return Respond("HTTP/1.0 200 OK");
} else if (m_StreamType == stES && (m_Apid[0] || m_Dpid[0] || ISRADIO(m_Channel))) {
return HttpResponse(200, false, "audio/mpeg", "icy-name: %s", m_Channel->Name());
} else if (ISRADIO(m_Channel)) {
return HttpResponse(200, false, "audio/mpeg");
} else {
return HttpResponse(200, false, "video/mpeg");
}
}
DELETENULL(m_Streamer);
}
return HttpResponse(503, true);
}
else if (m_RecPlayer != NULL) {
Dprintf("GET recording\n");
int64_t from, to;
bool hasRange = ParseRange(from, to);
cStreamdevRecStreamer* recStreamer;
if (from == 0 && hasRange && m_ReplayFakeRange) {
recStreamer = new cStreamdevRecStreamer(m_RecPlayer, this);
from += m_ReplayPos;
if (to >= 0)
to += m_ReplayPos;
}
else
recStreamer = new cStreamdevRecStreamer(m_RecPlayer, this, m_ReplayPos);
m_Streamer = recStreamer;
uint64_t total = recStreamer->GetLength();
if (hasRange) {
int64_t length = recStreamer->SetRange(from, to);
Dprintf("range response: %lld-%lld/%lld, len %lld\n", (long long)from, (long long)to, (long long)total, (long long)length);
if (length < 0L)
return HttpResponse(416, true, "video/mpeg", "Accept-Ranges: bytes\r\nContent-Range: bytes */%llu", (unsigned long long) total);
else
return HttpResponse(206, false, "video/mpeg", "Accept-Ranges: bytes\r\nContent-Range: bytes %lld-%lld/%llu\r\nContent-Length: %lld", (long long) from, (long long) to, (unsigned long long) total, (long long) length);
}
else
return HttpResponse(200, false, "video/mpeg", "Accept-Ranges: bytes");
}
else {
return HttpResponse(404, true);
}
} else if (it_method->second.compare("HEAD") == 0 && ProcessURI(it_pathinfo->second)) {
if (m_MenuList) {
DeferClose();
return Respond("%s", true, m_MenuList->HttpHeader().c_str());
}
else if (m_Channel != NULL) {
if (ProvidesChannel(m_Channel, StreamdevServerSetup.HTTPPriority)) {
if (m_StreamType == stEXT) {
cStreamdevLiveStreamer *liveStreamer = new cStreamdevLiveStreamer(StreamdevServerSetup.HTTPPriority, this);
liveStreamer->SetChannel(m_Channel, m_StreamType, m_Apid[0] ? m_Apid : NULL, m_Dpid[0] ? m_Dpid : NULL);
m_Streamer = liveStreamer;
return Respond("HTTP/1.0 200 OK");
} else if (m_StreamType == stES && (m_Apid[0] || m_Dpid[0] || ISRADIO(m_Channel))) {
return HttpResponse(200, true, "audio/mpeg", "icy-name: %s", m_Channel->Name());
} else if (ISRADIO(m_Channel)) {
return HttpResponse(200, true, "audio/mpeg");
} else {
return HttpResponse(200, true, "video/mpeg");
}
}
return HttpResponse(503, true);
}
else if (m_RecPlayer != NULL) {
Dprintf("HEAD recording\n");
int64_t from, to;
bool hasRange = ParseRange(from, to);
cStreamdevRecStreamer* recStreamer;
if (from == 0 && hasRange && m_ReplayFakeRange) {
recStreamer = new cStreamdevRecStreamer(m_RecPlayer, this, m_ReplayPos);
from += m_ReplayPos;
if (to >= 0)
to += m_ReplayPos;
}
else
recStreamer = new cStreamdevRecStreamer(m_RecPlayer, this, m_ReplayPos);
m_Streamer = recStreamer;
uint64_t total = recStreamer->GetLength();
if (hasRange) {
int64_t length = recStreamer->SetRange(from, to);
if (length < 0L)
return HttpResponse(416, true, "video/mpeg", "Accept-Ranges: bytes\r\nContent-Range: bytes */%llu", (unsigned long long) total);
else
return HttpResponse(206, true, "video/mpeg", "Accept-Ranges: bytes\r\nContent-Range: bytes %lld-%lld/%llu\r\nContent-Length: %lld", (long long) from, (long long) to, (unsigned long long) total, (long long) length);
}
else
return HttpResponse(200, true, "video/mpeg", "Accept-Ranges: bytes");
}
else {
return HttpResponse(404, true);
}
}
return HttpResponse(400, true);
}
static const char *AAA[] = {
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
};
static const char *MMM[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
bool cConnectionHTTP::HttpResponse(int Code, bool Last, const char* ContentType, const char* Headers, ...)
{
va_list ap;
va_start(ap, Headers);
#if APIVERSNUM >= 10728
cString headers = cString::vsprintf(Headers, ap);
#else
cString headers = cString::sprintf(Headers, ap);
#endif
va_end(ap);
bool rc;
if (Last)
DeferClose();
switch (Code)
{
case 200: rc = Respond("HTTP/1.1 200 OK"); break;
case 206: rc = Respond("HTTP/1.1 206 Partial Content"); break;
case 400: rc = Respond("HTTP/1.1 400 Bad Request"); break;
case 401: rc = Respond("HTTP/1.1 401 Authorization Required"); break;
case 404: rc = Respond("HTTP/1.1 404 Not Found"); break;
case 416: rc = Respond("HTTP/1.1 416 Requested range not satisfiable"); break;
case 503: rc = Respond("HTTP/1.1 503 Service Unavailable"); break;
default: rc = Respond("HTTP/1.1 500 Internal Server Error");
}
if (rc && ContentType)
rc = Respond("Content-Type: %s", true, ContentType);
if (rc)
rc = Respond("Connection: close")
&& Respond("Pragma: no-cache")
&& Respond("Cache-Control: no-cache")
&& Respond("Server: VDR-%s / streamdev-server-%s", true, VDRVERSION, VERSION);
time_t t = time(NULL);
struct tm *gmt = gmtime(&t);
if (rc && gmt) {
char buf[] = "Date: AAA, DD MMM YYYY HH:MM:SS GMT";
if (snprintf(buf, sizeof(buf), "Date: %s, %.2d %s %.4d %.2d:%.2d:%.2d GMT", AAA[gmt->tm_wday], gmt->tm_mday, MMM[gmt->tm_mon], gmt->tm_year + 1900, gmt->tm_hour, gmt->tm_min, gmt->tm_sec) == sizeof(buf) - 1)
rc = Respond(buf);
}
if (rc && strlen(Headers) > 0)
rc = Respond(headers);
tStrStrMap::iterator it = m_Params.begin();
while (rc && it != m_Params.end()) {
static const char DLNA_POSTFIX[] = ".dlna.org";
if (it->first.rfind(DLNA_POSTFIX) + sizeof(DLNA_POSTFIX) - 1 == it->first.length())
rc = Respond("%s: %s", true, it->first.c_str(), it->second.c_str());
++it;
}
return rc && Respond("");
}
bool cConnectionHTTP::ParseRange(int64_t &From, int64_t &To) const
{
const static std::string RANGE("HTTP_RANGE");
From = To = 0L;
tStrStrMap::const_iterator it = Headers().find(RANGE);
if (it != Headers().end()) {
size_t b = it->second.find("bytes=");
if (b != std::string::npos) {
char* e = NULL;
const char* r = it->second.c_str() + b + sizeof("bytes=") - 1;
if (strchr(r, ',') != NULL)
esyslog("streamdev-server cConnectionHTTP::GetRange: Multi-ranges not supported");
From = strtol(r, &e, 10);
if (r != e) {
if (From < 0L) {
To = -1L;
return *e == 0 || *e == ',';
}
else if (*e == '-') {
r = e + 1;
if (*r == 0 || *e == ',') {
To = -1L;
return true;
}
To = strtol(r, &e, 10);
return r != e && To >= From &&
(*e == 0 || *e == ',');
}
}
}
}
return false;
}
void cConnectionHTTP::Flushed(void)
{
if (m_Status != hsBody)
return;
if (m_MenuList) {
if (m_MenuList->HasNext()) {
if (!Respond("%s", true, m_MenuList->Next().c_str()))
DeferClose();
}
else {
DELETENULL(m_MenuList);
m_Status = hsFinished;
DeferClose();
}
return;
}
else if (m_Streamer != NULL) {
Dprintf("streamer start\n");
m_Streamer->Start(this);
m_Status = hsFinished;
}
else {
// should never be reached
esyslog("streamdev-server cConnectionHTTP::Flushed(): no job to do");
m_Status = hsFinished;
}
}
cMenuList* cConnectionHTTP::MenuListFromString(const std::string& Path, const std::string& Filebase, const std::string& Fileext) const
{
std::string groupTarget;
cItemIterator *iterator = NULL;
const static std::string GROUP("group");
if (Filebase.compare("tree") == 0) {
tStrStrMap::const_iterator it = m_Params.find(GROUP);
iterator = new cListTree(it == m_Params.end() ? NULL : it->second.c_str());
groupTarget = Filebase + Fileext;
} else if (Filebase.compare("groups") == 0) {
iterator = new cListGroups();
groupTarget = (std::string) "group" + Fileext;
} else if (Filebase.compare("group") == 0) {
tStrStrMap::const_iterator it = m_Params.find(GROUP);
iterator = new cListGroup(it == m_Params.end() ? NULL : it->second.c_str());
} else if (Filebase.compare("channels") == 0) {
iterator = new cListChannels();
} else if (Filebase.compare("all") == 0 ||
(Filebase.empty() && Fileext.empty())) {
iterator = new cListAll();
} else if (Filebase.compare("recordings") == 0) {
iterator = new cRecordingsIterator();
}
if (iterator) {
// assemble base url: http://host/path/
std::string base;
const static std::string HOST("HTTP_HOST");
tStrStrMap::const_iterator it = Headers().find(HOST);
if (it != Headers().end())
base = "http://" + it->second + "/";
else
base = (std::string) "http://" + LocalIp() + ":" +
(const char*) itoa(StreamdevServerSetup.HTTPServerPort) + "/";
base += Path;
if (Filebase.empty() || Fileext.compare(".htm") == 0 || Fileext.compare(".html") == 0) {
std::string self = Filebase + Fileext;
std::string rss = Filebase + ".rss";
tStrStrMap::const_iterator it = Headers().find("QUERY_STRING");
if (it != Headers().end() && !it->second.empty()) {
self += '?' + it->second;
rss += '?' + it->second;
}
return new cHtmlMenuList(iterator, m_StreamType, self.c_str(), rss.c_str(), groupTarget.c_str());
} else if (Fileext.compare(".m3u") == 0) {
return new cM3uMenuList(iterator, base.c_str());
} else if (Fileext.compare(".rss") == 0) {
std::string html = Filebase + ".html";
tStrStrMap::const_iterator it = Headers().find("QUERY_STRING");
if (it != Headers().end() && !it->second.empty()) {
html += '?' + it->second;
}
return new cRssMenuList(iterator, base.c_str(), html.c_str());
} else {
delete iterator;
}
}
return NULL;
}
RecPlayer* cConnectionHTTP::RecPlayerFromString(const char *FileBase, const char *FileExt)
{
RecPlayer *recPlayer = NULL;
if (strcasecmp(FileExt, ".rec") != 0)
return NULL;
char *p = NULL;
unsigned long l = strtoul(FileBase, &p, 0);
if (p != FileBase && l > 0L) {
if (*p == ':') {
// get recording by dev:inode
ino_t inode = (ino_t) strtoull(p + 1, &p, 0);
if (*p == 0 && inode > 0) {
struct stat st;
cThreadLock RecordingsLock(&Recordings);
for (cRecording *rec = Recordings.First(); rec; rec = Recordings.Next(rec)) {
if (stat(rec->FileName(), &st) == 0 && st.st_dev == (dev_t) l && st.st_ino == inode)
recPlayer = new RecPlayer(rec->FileName());
}
}
}
else if (*p == 0) {
// get recording by index
cThreadLock RecordingsLock(&Recordings);
cRecording *rec = Recordings.Get((int) l - 1);
if (rec)
recPlayer = new RecPlayer(rec->FileName());
}
if (recPlayer) {
const char *pos = NULL;
tStrStrMap::const_iterator it = m_Params.begin();
while (it != m_Params.end()) {
if (it->first == "pos") {
pos = it->second.c_str();
break;
}
++it;
}
if (pos) {
// With prefix "full_" we try to fool players
// by replying with a content range starting
// at the requested position instead of 0.
// This is a heavy violation of standards.
// Use at your own risk!
if (strncasecmp(pos, "full_", 5) == 0) {
m_ReplayFakeRange = true;
pos += 5;
}
if (strncasecmp(pos, "resume", 6) == 0) {
int id = pos[6] == '.' ? atoi(pos + 7) : 0;
m_ReplayPos = recPlayer->positionFromResume(id);
}
else if (strncasecmp(pos, "mark.", 5) == 0) {
int index = atoi(pos + 5);
m_ReplayPos = recPlayer->positionFromMark(index);
}
else if (strncasecmp(pos, "time.", 5) == 0) {
int seconds = atoi(pos + 5);
m_ReplayPos = recPlayer->positionFromTime(seconds);
}
else if (strncasecmp(pos, "frame.", 6) == 0) {
int frame = atoi(pos + 6);
m_ReplayPos = recPlayer->positionFromFrameNumber(frame);
}
else {
m_ReplayPos = atol(pos);
if (m_ReplayPos > 0L && m_ReplayPos < 100L)
m_ReplayPos = recPlayer->positionFromPercent((int) m_ReplayPos);
}
}
}
}
return recPlayer;
}
bool cConnectionHTTP::ProcessURI(const std::string& PathInfo)
{
std::string filespec, fileext;
size_t file_pos = PathInfo.rfind('/');
if (file_pos != std::string::npos) {
size_t ext_pos = PathInfo.rfind('.');
if (ext_pos != std::string::npos) {
// file extension including leading .
fileext = PathInfo.substr(ext_pos);
const char *ext = fileext.c_str();
// ignore dummy file extensions
if (strcasecmp(ext, ".ts") == 0 ||
strcasecmp(ext, ".vdr") == 0 ||
strcasecmp(ext, ".vob") == 0) {
size_t ext_end = ext_pos;
if (ext_pos > 0)
ext_pos = PathInfo.rfind('.', ext_pos - 1);
if (ext_pos == std::string::npos)
ext_pos = ext_end;
fileext = PathInfo.substr(ext_pos, ext_end - ext_pos);
}
}
// file basename with leading / stripped off
filespec = PathInfo.substr(file_pos + 1, ext_pos - file_pos - 1);
}
if (fileext.length() > 5) {
//probably not an extension
filespec += fileext;
fileext.clear();
}
// Streamtype with leading / stripped off
std::string type = PathInfo.substr(1, PathInfo.find_first_of("/;", 1) - 1);
const char* pType = type.c_str();
if (strcasecmp(pType, "PS") == 0) {
m_StreamType = stPS;
} else if (strcasecmp(pType, "PES") == 0) {
m_StreamType = stPES;
} else if (strcasecmp(pType, "TS") == 0) {
m_StreamType = stTS;
} else if (strcasecmp(pType, "ES") == 0) {
m_StreamType = stES;
} else if (strcasecmp(pType, "EXT") == 0) {
m_StreamType = stEXT;
}
Dprintf("before channelfromstring: type(%s) filespec(%s) fileext(%s)\n", type.c_str(), filespec.c_str(), fileext.c_str());
if ((m_MenuList = MenuListFromString(PathInfo.substr(1, file_pos), filespec.c_str(), fileext.c_str())) != NULL) {
Dprintf("Channel list requested\n");
return true;
} else if ((m_RecPlayer = RecPlayerFromString(filespec.c_str(), fileext.c_str())) != NULL) {
Dprintf("Recording %s found\n", m_RecPlayer->getCurrentRecording()->Name());
return true;
} else if ((m_Channel = ChannelFromString(filespec.c_str(), &m_Apid[0], &m_Dpid[0])) != NULL) {
Dprintf("Channel found. Apid/Dpid is %d/%d\n", m_Apid[0], m_Dpid[0]);
return true;
} else
return false;
}
cString cConnectionHTTP::ToText() const
{
cString str = cServerConnection::ToText();
return m_Streamer ? cString::sprintf("%s\t%s", *str, *m_Streamer->ToText()) : str;
}
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