pdns/auth-catalogzone.cc

   1 /*
   2  * This file is part of PowerDNS or dnsdist.
   3  * Copyright -- PowerDNS.COM B.V. and its contributors
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * In addition, for the avoidance of any doubt, permission is granted to
  10  * link this program with OpenSSL and to (re)distribute the binaries
  11  * produced as the result of such linking.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include "dnsbackend.hh"
  28
  29 void CatalogInfo::fromJson(const std::string& json, CatalogType type)
  30 {
  31   d_type = type;
  32   if (d_type == CatalogType::None) {
  33     throw std::runtime_error("CatalogType is set to None");
  34   }
  35   if (json.empty()) {
  36     return;
  37   }
  38   std::string err;
  39   d_doc = json11::Json::parse(json, err);
  40   if (!d_doc.is_null()) {
  41     if (!d_doc[getTypeString(d_type)].is_null()) {
  42       auto items = d_doc[getTypeString(type)].object_items();
  43       if (!items["coo"].is_null()) {
  44         if (items["coo"].is_string()) {
  45           if (!items["coo"].string_value().empty()) {
  46             d_coo = DNSName(items["coo"].string_value());
  47           }
  48         }
  49         else {
  50           throw std::out_of_range("Key 'coo' is not a string");
  51         }
  52       }
  53       if (!items["unique"].is_null()) {
  54         if (items["unique"].is_string()) {
  55           if (!items["unique"].string_value().empty()) {
  56             d_unique = DNSName(items["unique"].string_value());
  57           }
  58         }
  59         else {
  60           throw std::out_of_range("Key 'unique' is not a string");
  61         }
  62       }
  63       if (!items["group"].is_null()) {
  64         if (items["group"].is_array()) {
  65           for (const auto& value : items["group"].array_items()) {
  66             d_group.insert(value.string_value());
  67           }
  68         }
  69         else {
  70           throw std::out_of_range("Key 'group' is not an array");
  71         }
  72       }
  73     }
  74   }
  75   else {
  76     throw std::runtime_error("Parsing of JSON options failed: " + err);
  77   }
  78 }
  79
  80 std::string CatalogInfo::toJson() const
  81 {
  82   if (d_type == CatalogType::None) {
  83     throw std::runtime_error("CatalogType is set to None");
  84   }
  85   json11::Json::object object;
  86   if (!d_coo.empty()) {
  87     object["coo"] = d_coo.toString();
  88   }
  89   if (!d_unique.empty()) {
  90     if (d_unique.countLabels() > 1) {
  91       throw std::out_of_range("Multiple labels in a unique value are not allowed");
  92     }
  93     object["unique"] = d_unique.toString();
  94   }
  95   if (!d_group.empty()) {
  96     json11::Json::array entries;
  97     for (const auto& group : d_group) {
  98       entries.push_back(group);
  99     }
 100     object["group"] = entries;
 101   }
 102   auto tmp = d_doc.object_items();
 103   tmp[getTypeString(d_type)] = object;
 104   const json11::Json ret = tmp;
 105   return ret.dump();
 106 }
 107
 108 void CatalogInfo::updateHash(CatalogHashMap& hashes, const DomainInfo& di) const
 109 {
 110   hashes[di.catalog].process(std::to_string(di.id) + di.zone.toLogString() + string("\0", 1) + d_coo.toLogString() + string("\0", 1) + d_unique.toLogString());
 111   for (const auto& group : d_group) {
 112     hashes[di.catalog].process(std::to_string(group.length()) + group);
 113   }
 114 }
 115
 116 DNSZoneRecord CatalogInfo::getCatalogVersionRecord(const DNSName& zone)
 117 {
 118   DNSZoneRecord dzr;
 119   dzr.dr.d_name = DNSName("version") + zone;
 120   dzr.dr.d_ttl = 0;
 121   dzr.dr.d_type = QType::TXT;
 122   dzr.dr.setContent(std::make_shared<TXTRecordContent>("2"));
 123   return dzr;
 124 }
 125
 126 void CatalogInfo::toDNSZoneRecords(const DNSName& zone, vector<DNSZoneRecord>& dzrs) const
 127 {
 128   DNSName prefix;
 129   if (d_unique.empty()) {
 130     prefix = getUnique();
 131   }
 132   else {
 133     prefix = d_unique;
 134   }
 135   prefix += DNSName("zones") + zone;
 136
 137   DNSZoneRecord dzr;
 138   dzr.dr.d_name = prefix;
 139   dzr.dr.d_ttl = 0;
 140   dzr.dr.d_type = QType::PTR;
 141   dzr.dr.setContent(std::make_shared<PTRRecordContent>(d_zone.toString()));
 142   dzrs.emplace_back(dzr);
 143
 144   if (!d_coo.empty()) {
 145     dzr.dr.d_name = DNSName("coo") + prefix;
 146     dzr.dr.d_ttl = 0;
 147     dzr.dr.d_type = QType::PTR;
 148     dzr.dr.setContent(std::make_shared<PTRRecordContent>(d_coo));
 149     dzrs.emplace_back(dzr);
 150   }
 151
 152   for (const auto& group : d_group) {
 153     dzr.dr.d_name = DNSName("group") + prefix;
 154     dzr.dr.d_ttl = 0;
 155     dzr.dr.d_type = QType::TXT;
 156     dzr.dr.setContent(std::make_shared<TXTRecordContent>("\"" + group + "\""));
 157     dzrs.emplace_back(dzr);
 158   }
 159 }