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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 <string>
#include <vector>
#include "dnsrecords.hh"
#include "pdnsexception.hh"
#include "misc.hh"
#include "secpoll.hh"
bool isReleaseVersion(const std::string &version) {
return std::count(version.begin(), version.end(), '.') == 2;
}
static void setSecPollToUnknownOnOK(int &secPollStatus) {
if (secPollStatus == 1) { // it was ok, now it is unknown
secPollStatus = 0;
}
}
void processSecPoll(const int res, const std::vector<DNSRecord> &ret, int &secPollStatus, std::string &secPollMessage) {
secPollMessage.clear();
if (res != 0) { // not NOERROR
setSecPollToUnknownOnOK(secPollStatus);
throw PDNSException("RCODE was " + RCode::to_s(res));
}
if (ret.empty()) { // empty NOERROR... wat?
if (secPollStatus == 1) { // it was ok, now it is unknown
secPollStatus = 0;
}
throw PDNSException("Had empty answer on NOERROR RCODE");
}
DNSRecord record;
for (auto const &records: ret) {
if (records.d_type == QType::TXT && records.d_place == DNSResourceRecord::Place::ANSWER) {
record = records;
break;
}
}
if (record.d_name.empty()) {
setSecPollToUnknownOnOK(secPollStatus);
throw PDNSException("No TXT record found in response");
}
auto recordContent = getRR<TXTRecordContent>(record);
if (recordContent == nullptr) {
setSecPollToUnknownOnOK(secPollStatus);
throw PDNSException("Could not parse TXT record content");
}
string content = recordContent->d_text;
pair<string, string> split = splitField(unquotify(content), ' ');
try {
secPollStatus = std::stoi(split.first);
} catch (const std::exception &e) {
setSecPollToUnknownOnOK(secPollStatus);
throw PDNSException(std::string("Could not parse status number: ") + e.what());
}
secPollMessage = split.second;
}
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