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/*
* This file is part of PowerDNS or dnsdist.
* Copyright -- PowerDNS.COM B.V. and its contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* In addition, for the avoidance of any doubt, permission is granted to
* link this program with OpenSSL and to (re)distribute the binaries
* produced as the result of such linking.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <fstream>
#include <stdexcept>
#include "dnsname.hh"
#include "logging.hh"
#include "misc.hh"
#include "pubsuffix.hh"
std::vector<std::vector<std::string>> g_pubs;
static bool initPublicSuffixList(const std::string& file, std::istream& stream, std::vector<std::vector<std::string>>& pbList)
{
try {
Regex reg("^[.0-9a-z-]*$");
std::string line;
while (std::getline(stream, line)) {
if (line.empty() || (line.rfind("//", 0) == 0)) {
/* skip empty and commented lines */
continue;
}
try {
line = toLower(line);
if (!reg.match(line)) {
continue;
}
DNSName name(line);
if (name.countLabels() < 2) {
continue;
}
pbList.emplace_back(name.labelReverse().getRawLabels());
}
catch (...) {
/* not a DNS name, ignoring */
continue;
}
}
if (file != "internal") {
g_slog->withName("runtime")->info(Logr::Info, "Loaded the Public Suffix List", "file", Logging::Loggable(file));
}
return true;
}
catch (const std::exception& e) {
g_slog->withName("runtime")->error(Logr::Error, e.what(), "Error while loading the Public Suffix List", "file", Logging::Loggable(file));
}
return false;
}
void initPublicSuffixList(const std::string& file)
{
bool loaded = false;
std::vector<std::vector<std::string>> pbList;
if (!file.empty()) {
try {
std::ifstream suffixFile(file);
if (!suffixFile.is_open()) {
throw std::runtime_error("Error opening the public suffix list file");
}
loaded = initPublicSuffixList(file, suffixFile, pbList);
}
catch (const std::exception& e) {
g_slog->withName("runtime")->error(Logr::Error, e.what(), "Error while loading the Public Suffix List", "file", Logging::Loggable(file));
}
}
if (!loaded) {
pbList.clear();
std::istringstream stream(g_pubsuffix);
initPublicSuffixList("internal", stream, pbList);
}
std::sort(pbList.begin(), pbList.end());
g_pubs = std::move(pbList);
}
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