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/*
* Copyright (c) 2010 Remko Tronçon
* Licensed under the GNU General Public License v3.
* See Documentation/Licenses/GPLv3.txt for more information.
*/
#include <Swiften/TLS/ServerIdentityVerifier.h>
#include <boost/algorithm/string.hpp>
#include <Swiften/Base/foreach.h>
#include <Swiften/IDN/IDNA.h>
namespace Swift {
ServerIdentityVerifier::ServerIdentityVerifier(const JID& jid) {
domain = jid.getDomain();
encodedDomain = IDNA::getEncoded(domain);
}
bool ServerIdentityVerifier::certificateVerifies(Certificate::ref certificate) {
bool hasSAN = false;
// DNS names
std::vector<std::string> dnsNames = certificate->getDNSNames();
foreach (const std::string& dnsName, dnsNames) {
if (matchesDomain(dnsName)) {
return true;
}
}
hasSAN |= !dnsNames.empty();
// SRV names
std::vector<std::string> srvNames = certificate->getSRVNames();
foreach (const std::string& srvName, srvNames) {
// Only match SRV names that begin with the service; this isn't required per
// spec, but we're being purist about this.
if (boost::starts_with(srvName, "_xmpp-client.") && matchesDomain(srvName.substr(std::string("_xmpp-client.").size(), srvName.npos))) {
return true;
}
}
hasSAN |= !srvNames.empty();
// XmppAddr
std::vector<std::string> xmppAddresses = certificate->getXMPPAddresses();
foreach (const std::string& xmppAddress, xmppAddresses) {
if (matchesAddress(xmppAddress)) {
return true;
}
}
hasSAN |= !xmppAddresses.empty();
// CommonNames. Only check this if there was no SAN (according to spec).
if (!hasSAN) {
std::vector<std::string> commonNames = certificate->getCommonNames();
foreach (const std::string& commonName, commonNames) {
if (matchesDomain(commonName)) {
return true;
}
}
}
return false;
}
bool ServerIdentityVerifier::matchesDomain(const std::string& s) const {
if (boost::starts_with(s, "*.")) {
std::string matchString(s.substr(2, s.npos));
std::string matchDomain = encodedDomain;
size_t dotIndex = matchDomain.find('.');
if (dotIndex != matchDomain.npos) {
matchDomain = matchDomain.substr(dotIndex + 1, matchDomain.npos);
}
return matchString == matchDomain;
}
else {
return s == encodedDomain;
}
}
bool ServerIdentityVerifier::matchesAddress(const std::string& s) const {
return s == domain;
}
}
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Swift