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/*
* Copyright (c) 2002-2009 Moxie Marlinspike
*
* 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 3 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 "FirefoxAddonUpdater.hpp"
#include "UpdateManager.hpp"
#include "Logger.hpp"
std::string FirefoxAddonUpdater::incrementVersion(std::string &version) {
int dot = version.rfind(".");
std::string prefix;
std::string postfix;
int postfixValue;
if (dot == std::string::npos) {
prefix = "";
postfix = version;
} else {
prefix = version.substr(0, dot+1);
postfix = version.substr(dot+1);
}
std::istringstream postStream(postfix);
postStream >> postfixValue;
postfixValue++;
std::ostringstream incrementedVersion;
incrementedVersion << prefix << postfixValue;
return incrementedVersion.str();
}
std::string FirefoxAddonUpdater::truncateVersion(std::string &version) {
int dot = version.rfind(".");
if (dot == std::string::npos || dot+1 == version.length()) {
return version;
} else {
return version.substr(0, dot);
}
}
void FirefoxAddonUpdater::sendMetaUpdateResponse() {
std::string path = UpdateManager::getInstance()->getAddonPath();
std::string sha = UpdateManager::getInstance()->getAddonHash();
std::string version = requestArguments["version"];
std::string newVersion = incrementVersion(version);
std::string appVersion = requestArguments["appVersion"];
std::string minVersion = truncateVersion(appVersion);
Logger::logAddonUpdate(requestArguments["id"]);
std::ostringstream headerStream;
std::ostringstream responseStream;
responseStream << "<?xml version=\"1.0\"?>"
<< "<RDF:RDF xmlns:RDF=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\" "
<< "xmlns:em=\"http://www.mozilla.org/2004/em-rdf#\">"
<< "<RDF:Description about=\"urn:mozilla:extension:" << requestArguments["id"] << "\">"
<< "<em:updates><RDF:Seq><RDF:li resource=\"urn:mozilla:extension:" << requestArguments["id"] << ":"
<< newVersion << "\"/>"
<< "</RDF:Seq></em:updates></RDF:Description>"
<< "<RDF:Description about=\"urn:mozilla:extension:" << requestArguments["id"] << ":" << newVersion << "\">"
<< "<em:version>" << newVersion << "</em:version>"
<< "<em:targetApplication><RDF:Description><em:id>" << requestArguments["appID"] << "</em:id>"
<< "<em:minVersion>" << minVersion << "</em:minVersion>"
<< "<em:maxVersion>" << requestArguments["maxAppVersion"] << "</em:maxVersion>"
<< "<em:updateLink>" << path << "</em:updateLink>"
<< "<em:updateInfoURL>http://www.thoughtcrime.org</em:updateInfoURL>"
<< "<em:updateHash>sha256:" << sha << "</em:updateHash>"
<< "</RDF:Description></em:targetApplication></RDF:Description></RDF:RDF>";
std::string response = responseStream.str();
headerStream << "HTTP/1.0 200 OK\r\n"
<< "Server: Apache/2.0\r\n"
<< "Accept-Ranges: bytes\r\n"
<< "Content-Length: " << response.length() << "\r\n"
<< "Connection: close\r\n"
<< "Content-Type: text/plain; charset=iso-8859-1\r\n\r\n";
std::string header = headerStream.str();
SSL_write(clientSession, header.c_str(), header.length());
SSL_write(clientSession, response.c_str(), response.length());
}
bool FirefoxAddonUpdater::parseArguments(std::string &request, std::vector<std::string> &arguments) {
int questionIndex = request.find('?');
if (questionIndex == std::string::npos)
return false;
if (questionIndex+1 == request.length())
return false;
std::string argumentString = request.substr(questionIndex+1);
std::string delimiters("&");
Util::tokenizeString(argumentString, delimiters, arguments);
return true;
}
bool FirefoxAddonUpdater::parseMetaRequest(std::string &request) {
std::vector<std::string> arguments;
if (!parseArguments(request, arguments))
return false;
if (arguments.size() < 10)
return false;
std::vector<std::string>::iterator iter;
for (iter = arguments.begin(); iter != arguments.end(); iter++) {
std::string argument = *iter;
int equalsIndex = argument.find('=');
if (equalsIndex == std::string::npos ||
equalsIndex+1 == argument.length())
continue;
std::string key = argument.substr(0, equalsIndex);
std::string value = argument.substr(equalsIndex+1);
requestArguments[key] = value;
}
return true;
}
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