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/* smplayer, GUI front-end for mplayer.
Copyright (C) 2006-2016 Ricardo Villalba <rvm@users.sourceforge.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "sig.h"
#include <QRegExp>
#include <QStringList>
#include <QtScript>
#include <QSettings>
#include <QDebug>
//#define ULTRAVERBOSE
QString Sig::findText(const QString & text, const QString & begin, const QString & end) {
QString res;
int pos = text.indexOf(begin);
if (pos > -1) {
int pos2 = text.indexOf(end, pos);
if (pos2 > -1) {
pos = pos + begin.length();
res = text.mid(pos, pos2 - pos);
}
}
return res;
}
QString Sig::findFunctions(const QString & text) {
QString res;
//QString sts;
QRegExp rx_sts("sts:(\\d+)");
if (rx_sts.indexIn(text) != -1) {
sts = rx_sts.cap(1);
}
qDebug() << "Sig::findFunctions: sts:" << sts;
QString sig_name;
//QRegExp rx_sig("\\.sig\\|\\|([a-zA-Z0-9\\$]+)\\(");
QRegExp rx_sig("([\"\'])signature\\1\\s*,\\s*([a-zA-Z0-9$]+)\\(");
if (rx_sig.indexIn(text) != -1) {
//sig_name = rx_sig.cap(1);
sig_name = rx_sig.cap(2);
}
qDebug() << "Sig::findFunctions: sig_name:" << sig_name;
QString sig_code;
if (!sig_name.isEmpty()) {
//int pos = text.indexOf("function " + sig_name);
int pos = text.indexOf("var " + sig_name + "=function");
if (pos == -1) pos = text.indexOf("," + sig_name + "=function");
if (pos == -1) pos = text.indexOf(sig_name + "=function");
if (pos > -1) {
int endpos = text.indexOf("}", pos);
#ifdef ULTRAVERBOSE
qDebug() << "Sig::findFunctions: pos:" << pos << "endpos:" << endpos;
#endif
if (endpos > -1) {
sig_code = text.mid(pos, (endpos-pos)+1);
if (sig_code.startsWith("var ")) sig_code.replace("var " + sig_name + "=function", "function " + sig_name);
else
if (sig_code.startsWith(",")) sig_code.replace("," + sig_name + "=function", "function " + sig_name);
else
if (sig_code.startsWith(sig_name+"=")) sig_code.replace(sig_name + "=function", "function " + sig_name);
}
}
}
qDebug() << "Sig::findFunctions: sig_code:" << sig_code;
// Find the 2nd function
QString function2;
if (!sig_code.isEmpty()) {
QStringList parts = sig_code.split(";");
#ifdef ULTRAVERBOSE
qDebug() << "Sig::findFunctions: parts:" << parts;
#endif
foreach(QString part, parts) {
//qDebug() << "Sig::findFunctions: part:" << part;
QRegExp rx("([a-zA-Z\\$]+)\\.([a-zA-Z0-9]+)\\(");
if (rx.indexIn(part) != -1) {
QString possible_var = rx.cap(1);
#ifdef ULTRAVERBOSE
qDebug() << "Sig::findFunctions: possible var:" << possible_var;
#endif
if ((possible_var != "a") && (possible_var != "")) {
QString s = findText(text, "var "+ possible_var +"=", "};");
#ifdef ULTRAVERBOSE
qDebug() << "Sig::findFunctions: s:" << s;
#endif
if (!s.isEmpty()) {
function2 = "var "+ possible_var +" = "+ s +" };";
break;
}
}
}
}
}
qDebug() << "Sig::findFunctions: function2:" << function2;
if (!sig_code.isEmpty()) {
//sig_code = sig_code.replace("function "+ sig_name + "(", "function aclara(");
function_name = sig_name;
#ifdef ULTRAVERBOSE
qDebug() << "Sig::findFunctions: sig_code:" << sig_code;
#endif
res = sig_code + " " + function2;
}
qDebug() << "Sig::findFunctions: res:" << res;
decrypt_function = res;
return res;
}
QString Sig::aclara(const QString & text) {
int dot = text.indexOf('.');
qDebug("Sig::aclara: length: %d (%d.%d)", text.size(), dot, text.size()-dot-1);
QString res;
if (!decrypt_function.isEmpty()) {
QString fname = function_name;
QScriptEngine engine;
engine.evaluate(decrypt_function);
QScriptValueList args;
args << text;
QScriptValue aclarar = engine.globalObject().property(fname);
res = aclarar.call(QScriptValue(), args).toString();
}
qDebug() << "Sig::aclara: res:" << res;
if (res.isEmpty()) {
qDebug() << "Sig::aclara: signature length not supported:" << text.size() << ":" << text;
}
return res;
}
void Sig::save(QSettings * set) {
qDebug() << "Sig::save";
set->beginGroup("sig");
set->setValue("player", html5_player);
set->setValue("sts", sts);
set->setValue("function_name", function_name);
set->setValue("function", decrypt_function);
set->endGroup();
}
void Sig::load(QSettings * set) {
qDebug() << "Sig::load";
set->beginGroup("sig");
html5_player = set->value("player", "").toString();
sts = set->value("sts", "").toString();
function_name = set->value("function_name", "").toString();
decrypt_function = set->value("function", "").toString();
set->endGroup();
}
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