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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/IDN/StringPrep.h>
#include <stringprep.h>
#include <vector>
#include <cassert>
#include <Swiften/Base/SafeAllocator.h>
using namespace Swift;
namespace {
static const int MAX_STRINGPREP_SIZE = 1024;
const Stringprep_profile* getLibIDNProfile(StringPrep::Profile profile) {
switch(profile) {
case StringPrep::NamePrep: return stringprep_nameprep; break;
case StringPrep::XMPPNodePrep: return stringprep_xmpp_nodeprep; break;
case StringPrep::XMPPResourcePrep: return stringprep_xmpp_resourceprep; break;
case StringPrep::SASLPrep: return stringprep_saslprep; break;
}
assert(false);
return 0;
}
template<typename StringType, typename ContainerType>
ContainerType getStringPrepared(const StringType& s, StringPrep::Profile profile) {
ContainerType input(s.begin(), s.end());
input.resize(MAX_STRINGPREP_SIZE);
if (stringprep(&input[0], MAX_STRINGPREP_SIZE, static_cast<Stringprep_profile_flags>(0), getLibIDNProfile(profile)) == 0) {
return input;
}
else {
return ContainerType();
}
}
}
namespace Swift {
std::string StringPrep::getPrepared(const std::string& s, Profile profile) {
std::vector<char> preparedData = getStringPrepared< std::string, std::vector<char> >(s, profile);
if (preparedData.empty()) {
throw std::exception();
}
return std::string(vecptr(preparedData));
}
SafeByteArray StringPrep::getPrepared(const SafeByteArray& s, Profile profile) {
std::vector<char, SafeAllocator<char> > preparedData = getStringPrepared<SafeByteArray, std::vector<char, SafeAllocator<char> > >(s, profile);
if (preparedData.empty()) {
throw std::exception();
}
return createSafeByteArray(reinterpret_cast<const char*>(vecptr(preparedData)));
}
}
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Swift