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#include <cerrno>
#include <cstring>
#include <fstream>
#include <sstream>
#include <stdexcept>
#include <vdr/config.h>
#include <vdr/plugin.h>
#include "i18n.h"
#include "live.h"
#include "setup.h"
#include "tntconfig.h"
namespace vdrlive {
using namespace std;
TntConfig::TntConfig()
{
WriteConfig();
}
void TntConfig::WriteConfig()
{
WriteProperties();
string const configDir(Plugin::GetConfigDirectory());
ostringstream builder;
builder << configDir << "/httpd.config";
m_configPath = builder.str();
ofstream file( m_configPath.c_str(), ios::out | ios::trunc );
if ( !file ) {
ostringstream builder;
builder << "Can't open " << m_configPath << " for writing: " << strerror( errno );
throw runtime_error( builder.str() );
}
// +++ CAUTION +++ CAUTION +++ CAUTION +++ CAUTION +++ CAUTION +++
// ------------------------------------------------------------------------
// These MapUrl statements are very security sensitive!
// A wrong mapping to content@ may allow retrieval of arbitrary files
// from your VDR system via live.
// Two meassures are taken against this in our implementation:
// 1. The MapUrls need to be checked regulary against possible exploits
// One tool to do this can be found here:
// http://www.lumadis.be/regex/test_regex.php
// Newly inserted MapUrls should be marked with author and confirmed
// by a second party. (use source code comments for this)
// 2. content.ecpp checks the given path to be
// a. an absolute path starting at /
// b. not containing ../ paths components
// In order to do so, the MapUrl statements must create absolute
// path arguments to content@
// ------------------------------------------------------------------------
// +++ CAUTION +++ CAUTION +++ CAUTION +++ CAUTION +++ CAUTION +++
file << "MapUrl ^/$ login@" << endl;
// the following redirects vdr_request URL to the component
// specified by the action parameter.
// inserted by 'tadi' -- verified with above, but not counterchecked yet!
file << "MapUrl ^/vdr_request/([^.]+) $1@" << endl;
// the following selects the theme specific 'theme.css' file
// inserted by 'tadi' -- verified with above, but not counterchecked yet!
file << "MapUrl ^/themes/([^/]*)/css.*/(.+\\.css) content@ " << configDir << "/themes/$1/css/$2 text/css" << endl;
// the following rules provide a search scheme for images. The first
// rule where a image is found, terminates the search.
// 1. /themes/<theme>/img/<imgname>.<ext>
// 2. /img/<imgname>.<ext>
// deprecated: 3. <imgname>.<ext> (builtin images)
// inserted by 'tadi' -- verified with above, but not counterchecked yet!
file << "MapUrl ^/themes/([^/]*)/img.*/(.+)\\.(.+) content@ " << configDir << "/themes/$1/img/$2.$3 image/$3" << endl;
file << "MapUrl ^/themes/([^/]*)/img.*/(.+)\\.(.+) content@ " << configDir << "/img/$2.$3 image/$3" << endl;
// deprecated: file << "MapUrl ^/themes/([^/]*)/img.*/(.+)\\.(.+) $2@" << endl;
// Epg images
string const epgImgPath(LiveSetup().GetEpgImageDir());
if (!epgImgPath.empty()) {
// inserted by 'winni' -- EXPLOITABLE! (checked by tadi)
// file << "MapUrl ^/epgimages/(.*)\\.(.+) content@ " << epgImgPath << "/$1.$2 image/$2" << endl;
// inserted by 'tadi' -- verified with above, but not counterchecked yet!
file << "MapUrl ^/epgimages/([^/]*)\\.([^./]+) content@ " << epgImgPath << "/$1.$2 image/$2" << endl;
}
// select additional (not build in) javascript.
// WARNING: no path components with '.' in the name are allowed. Only
// the basename may contain dots and must end with '.js'
// inserted by 'tadi' -- verified with above, but not counterchecked yet!
file << "MapUrl ^/js(/[^.]*)([^/]*\\.js) content@ " << configDir << "/js$1$2 text/javascript" << endl;
// map to 'css/basename(uri)'
// inserted by 'tadi' -- verified with above, but not counterchecked yet!
file << "MapUrl ^/css.*/(.+) content@ " << configDir << "/css/$1 text/css" << endl;
// map to 'img/basename(uri)'
// inserted by 'tadi' -- verified with above, but not counterchecked yet!
file << "MapUrl ^/img.*/(.+)\\.([^.]+) content@ " << configDir << "/img/$1.$2 image/$2" << endl;
// Map favicon.ico into img directory
file << "MapUrl ^/favicon.ico$ content@ " << configDir << "/img/favicon.ico image/x-icon" << endl;
// insecure by default: DO NOT UNKOMMENT!!!
// file << "MapUrl /([^/]+/.+) content@ $1" << endl;
// takes first path components without 'extension' when it does not
// contain '.'
// modified by 'tadi' -- verified with above, but not counterchecked yet!
file << "MapUrl ^/([^./]+)(.*)? $1@" << endl;
file << "PropertyFile " << m_propertiesPath << endl;
file << "SessionTimeout 86400" << endl;
file << "DefaultContentType \"text/html; charset=" << LiveI18n().CharacterEncoding() << "\"" << endl;
Setup::IpList const& ips = LiveSetup().GetServerIps();
int port = LiveSetup().GetServerPort();
for ( Setup::IpList::const_iterator ip = ips.begin(); ip != ips.end(); ++ip ) {
file << "Listen " << *ip << " " << port << endl;
}
}
void TntConfig::WriteProperties()
{
ostringstream builder;
builder << Plugin::GetConfigDirectory() << "/httpd.properties";
m_propertiesPath = builder.str();
ofstream file( m_propertiesPath.c_str(), ios::out | ios::trunc );
if ( !file ) {
ostringstream builder;
builder << "Can't open " << m_propertiesPath << " for writing: " << strerror( errno );
throw runtime_error( builder.str() );
}
// XXX modularize
file << "rootLogger=" << LiveSetup().GetTntnetLogLevel() << endl;
file << "logger.tntnet=" << LiveSetup().GetTntnetLogLevel() << endl;
}
TntConfig const& TntConfig::Get()
{
static TntConfig instance;
return instance;
}
} // namespace vdrlive
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