9829858019

Committed 07 Jul 2024 07:44PM UTC coverage: 59.459% (-5.2%) from 64.689%

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Merge pull request #14433 from PowerDNS/dependabot/pip/pdns/dnsdistdist/docs/certifi-2024.7.4

build(deps): bump certifi from 2024.2.2 to 2024.7.4 in /pdns/dnsdistdist/docs

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0.0

/modules/lua2backend/lua2api2.hh

/*
 * 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
 * MERCHANTAPILITY 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.
 */
#pragma once
#include "boost/lexical_cast.hpp"
#include "boost/algorithm/string/join.hpp"
#include "pdns/arguments.hh"

#include "pdns/dnsbackend.hh"
#include "pdns/lua-auth4.hh"

class Lua2BackendAPIv2 : public DNSBackend, AuthLua4
{
private:
  typedef std::function<void()> init_call_t;
  typedef std::function<void()> deinit_call_t;

  typedef std::vector<std::pair<string, string>> lookup_context_t;

  typedef std::vector<std::pair<int, std::vector<std::pair<string, boost::variant<bool, int, DNSName, string, QType>>>>> lookup_result_t;
  typedef std::function<lookup_result_t(const QType& qtype, const DNSName& qname, int domain_id, const lookup_context_t& ctx)> lookup_call_t;

  typedef boost::variant<bool, lookup_result_t> list_result_t;
  typedef std::function<list_result_t(const DNSName& qname, int domain_id)> list_call_t;

  typedef vector<pair<string, boost::variant<bool, long, string, vector<string>>>> domaininfo_result_t;
  typedef boost::variant<bool, domaininfo_result_t> get_domaininfo_result_t;
  typedef vector<pair<DNSName, domaininfo_result_t>> get_all_domains_result_t;
  typedef std::function<get_domaininfo_result_t(const DNSName& domain)> get_domaininfo_call_t;
  typedef std::function<get_all_domains_result_t()> get_all_domains_call_t;

  typedef vector<pair<int, string>> domain_metadata_result_t;
  typedef boost::variant<bool, domain_metadata_result_t> get_domain_metadata_result_t;
  typedef boost::variant<bool, vector<pair<string, domain_metadata_result_t>>> get_all_domain_metadata_result_t;
  typedef std::function<get_domain_metadata_result_t(const DNSName& domain, const string& kind)> get_domain_metadata_call_t;
  typedef std::function<get_all_domain_metadata_result_t(const DNSName& domain)> get_all_domain_metadata_call_t;

  typedef vector<pair<string, boost::variant<bool, int, string>>> keydata_result_t;
  typedef boost::variant<bool, vector<pair<int, keydata_result_t>>> get_domain_keys_result_t;
  typedef std::function<get_domain_keys_result_t(const DNSName& domain)> get_domain_keys_call_t;

  typedef std::vector<std::pair<string, boost::variant<string, DNSName>>> before_and_after_names_result_t;
  typedef boost::variant<bool, before_and_after_names_result_t> get_before_and_after_names_absolute_result_t;
  typedef std::function<get_before_and_after_names_absolute_result_t(int id, const DNSName& qname)> get_before_and_after_names_absolute_call_t;

  typedef std::function<void(int, long)> set_notified_call_t;

  typedef std::function<string(const string& cmd)> direct_backend_cmd_call_t;

public:
  Lua2BackendAPIv2(const string& suffix)
  {
    setArgPrefix("lua2" + suffix);
    d_debug_log = mustDo("query-logging");
    prepareContext();
    loadFile(getArg("filename"));
  }

  ~Lua2BackendAPIv2() override;

#define logCall(func, var)                                                                               \
  {                                                                                                      \
    if (d_debug_log) {                                                                                   \
      g_log << Logger::Debug << "[" << getPrefix() << "] Calling " << func << "(" << var << ")" << endl; \
    }                                                                                                    \
  }
#define logResult(var)                                                \
  {                                                                   \
    if (d_debug_log) {                                                \
      g_log << Logger::Debug << "[" << getPrefix() << "] Got result " \
            << "'" << var << "'" << endl;                             \
    }                                                                 \
  }

  void postPrepareContext() override
  {
    AuthLua4::postPrepareContext();
  }

  void postLoad() override
  {
    f_lookup = d_lw->readVariable<boost::optional<lookup_call_t>>("dns_lookup").get_value_or(0);
    f_list = d_lw->readVariable<boost::optional<list_call_t>>("dns_list").get_value_or(0);
    f_get_all_domains = d_lw->readVariable<boost::optional<get_all_domains_call_t>>("dns_get_all_domains").get_value_or(0);
    f_get_domaininfo = d_lw->readVariable<boost::optional<get_domaininfo_call_t>>("dns_get_domaininfo").get_value_or(0);
    f_get_domain_metadata = d_lw->readVariable<boost::optional<get_domain_metadata_call_t>>("dns_get_domain_metadata").get_value_or(0);
    f_get_all_domain_metadata = d_lw->readVariable<boost::optional<get_all_domain_metadata_call_t>>("dns_get_all_domain_metadata").get_value_or(0);
    f_get_domain_keys = d_lw->readVariable<boost::optional<get_domain_keys_call_t>>("dns_get_domain_keys").get_value_or(0);
    f_get_before_and_after_names_absolute = d_lw->readVariable<boost::optional<get_before_and_after_names_absolute_call_t>>("dns_get_before_and_after_names_absolute").get_value_or(0);
    f_set_notified = d_lw->readVariable<boost::optional<set_notified_call_t>>("dns_set_notified").get_value_or(0);

    auto init = d_lw->readVariable<boost::optional<init_call_t>>("dns_init").get_value_or(0);
    if (init)
      init();

    f_deinit = d_lw->readVariable<boost::optional<deinit_call_t>>("dns_deinit").get_value_or(0);

    if (f_lookup == nullptr)
      throw PDNSException("dns_lookup missing");

    /* see if dnssec support is wanted */
    d_dnssec = d_lw->readVariable<boost::optional<bool>>("dns_dnssec").get_value_or(false);
    if (d_dnssec) {
      if (f_get_domain_metadata == nullptr)
        throw PDNSException("dns_dnssec is true but dns_get_domain_metadata is missing");
      if (f_get_before_and_after_names_absolute == nullptr)
        throw PDNSException("dns_dnssec is true but dns_get_before_and_after_names_absolute is missing");
      /* domain keys is not strictly speaking necessary for dnssec backend */
      if (f_get_domain_keys == nullptr)
        g_log << Logger::Warning << "dns_get_domain_keys missing - cannot do live signing" << endl;
    }
  }

  bool doesDNSSEC() override
  {
    return d_dnssec;
  }

  void parseLookup(const lookup_result_t& result)
  {
    for (const auto& row : result) {
      DNSResourceRecord rec;
      for (const auto& item : row.second) {
        if (item.first == "type") {
          if (item.second.which() == 1)
            rec.qtype = QType(boost::get<int>(item.second));
          else if (item.second.which() == 3)
            rec.qtype = boost::get<string>(item.second);
          else if (item.second.which() == 4)
            rec.qtype = boost::get<QType>(item.second);
          else
            throw PDNSException("Unsupported value for type");
        }
        else if (item.first == "name") {
          if (item.second.which() == 3)
            rec.qname = DNSName(boost::get<string>(item.second));
          else if (item.second.which() == 2)
            rec.qname = boost::get<DNSName>(item.second);
          else
            throw PDNSException("Unsupported value for name");
        }
        else if (item.first == "domain_id")
          rec.domain_id = boost::get<int>(item.second);
        else if (item.first == "auth")
          rec.auth = boost::get<bool>(item.second);
        else if (item.first == "last_modified")
          rec.last_modified = static_cast<time_t>(boost::get<int>(item.second));
        else if (item.first == "ttl")
          rec.ttl = boost::get<int>(item.second);
        else if (item.first == "content")
          rec.setContent(boost::get<string>(item.second));
        else if (item.first == "scopeMask")
          rec.scopeMask = boost::get<int>(item.second);
        else
          g_log << Logger::Warning << "Unsupported key '" << item.first << "' in lookup or list result" << endl;
      }
      logResult(rec.qname << " IN " << rec.qtype.toString() << " " << rec.ttl << " " << rec.getZoneRepresentation());
      d_result.push_back(rec);
    }
    if (d_result.empty() && d_debug_log)
      g_log << Logger::Debug << "[" << getPrefix() << "] Got empty result" << endl;
  }

  bool list(const DNSName& target, int domain_id, bool /* include_disabled */ = false) override
  {
    if (f_list == nullptr) {
      g_log << Logger::Error << "[" << getPrefix() << "] dns_list missing - cannot do AXFR" << endl;
      return false;
    }

    if (d_result.size() != 0)
      throw PDNSException("list attempted while another was running");

    logCall("list", "target=" << target << ",domain_id=" << domain_id);
    list_result_t result = f_list(target, domain_id);

    if (result.which() == 0)
      return false;

    parseLookup(boost::get<lookup_result_t>(result));

    return true;
  }

  void lookup(const QType& qtype, const DNSName& qname, int domain_id, DNSPacket* p = nullptr) override
  {
    if (d_result.size() != 0)
      throw PDNSException("lookup attempted while another was running");

    lookup_context_t ctx;
    if (p != NULL) {
      ctx.emplace_back(lookup_context_t::value_type{"source_address", p->getInnerRemote().toString()});
      ctx.emplace_back(lookup_context_t::value_type{"real_source_address", p->getRealRemote().toString()});
    }

    logCall("lookup", "qtype=" << qtype.toString() << ",qname=" << qname << ",domain_id=" << domain_id);
    lookup_result_t result = f_lookup(qtype, qname, domain_id, ctx);
    parseLookup(result);
  }

  bool get(DNSResourceRecord& rr) override
  {
    if (d_result.size() == 0)
      return false;
    rr = std::move(d_result.front());
    d_result.pop_front();
    return true;
  }

  string directBackendCmd(const string& querystr) override
  {
    string::size_type pos = querystr.find_first_of(" \t");
    string cmd = querystr;
    string par = "";
    if (pos != string::npos) {
      cmd = querystr.substr(0, pos);
      par = querystr.substr(pos + 1);
    }
    direct_backend_cmd_call_t f = d_lw->readVariable<boost::optional<direct_backend_cmd_call_t>>(cmd).get_value_or(0);
    if (f == nullptr) {
      return cmd + "not found";
    }
    logCall(cmd, "parameter=" << par);
    return f(par);
  }

  void setNotified(uint32_t id, uint32_t serial) override
  {
    if (f_set_notified == NULL)
      return;
    logCall("dns_set_notified", "id=" << static_cast<int>(id) << ",serial=" << serial);
    f_set_notified(static_cast<int>(id), serial);
  }

  void parseDomainInfo(const domaininfo_result_t& row, DomainInfo& di)
  {
    for (const auto& item : row) {
      if (item.first == "account")
        di.account = boost::get<string>(item.second);
      else if (item.first == "last_check")
        di.last_check = static_cast<time_t>(boost::get<long>(item.second));
      else if (item.first == "masters")
        for (const auto& primary : boost::get<vector<string>>(item.second))
          di.primaries.push_back(ComboAddress(primary, 53));
      else if (item.first == "id")
        di.id = static_cast<int>(boost::get<long>(item.second));
      else if (item.first == "notified_serial")
        di.notified_serial = static_cast<unsigned int>(boost::get<long>(item.second));
      else if (item.first == "serial")
        di.serial = static_cast<unsigned int>(boost::get<long>(item.second));
      else if (item.first == "kind")
        di.kind = DomainInfo::stringToKind(boost::get<string>(item.second));
      else
        g_log << Logger::Warning << "Unsupported key '" << item.first << "' in domaininfo result" << endl;
    }
    di.backend = this;
    logResult("zone=" << di.zone << ",serial=" << di.serial << ",kind=" << di.getKindString());
  }

  bool getDomainInfo(const DNSName& domain, DomainInfo& di, bool /* getSerial */ = true) override
  {
    if (f_get_domaininfo == nullptr) {
      // use getAuth instead
      SOAData sd;
      if (!getAuth(domain, &sd))
        return false;

      di.zone = domain;
      di.backend = this;
      di.serial = sd.serial;
      return true;
    }

    logCall("get_domaininfo", "domain=" << domain);
    get_domaininfo_result_t result = f_get_domaininfo(domain);

    if (result.which() == 0)
      return false;

    di.zone = domain;
    parseDomainInfo(boost::get<domaininfo_result_t>(result), di);

    return true;
  }

  void getAllDomains(vector<DomainInfo>* domains, bool /* getSerial */, bool /* include_disabled */) override
  {
    if (f_get_all_domains == nullptr)
      return;

    logCall("get_all_domains", "");
    for (const auto& row : f_get_all_domains()) {
      DomainInfo di;
      di.zone = row.first;
      logResult(di.zone);
      parseDomainInfo(row.second, di);
      domains->push_back(di);
    }
  }

  bool getAllDomainMetadata(const DNSName& name, std::map<std::string, std::vector<std::string>>& meta) override
  {
    if (f_get_all_domain_metadata == nullptr)
      return false;

    logCall("get_all_domain_metadata", "name=" << name);
    get_all_domain_metadata_result_t result = f_get_all_domain_metadata(name);
    if (result.which() == 0)
      return false;

    for (const auto& row : boost::get<vector<pair<string, domain_metadata_result_t>>>(result)) {
      meta[row.first].clear();
      for (const auto& item : row.second)
        meta[row.first].push_back(item.second);
      logResult("kind=" << row.first << ",value=" << boost::algorithm::join(meta[row.first], ", "));
    }

    return true;
  }

  bool getDomainMetadata(const DNSName& name, const std::string& kind, std::vector<std::string>& meta) override
  {
    if (f_get_domain_metadata == nullptr)
      return false;

    logCall("get_domain_metadata", "name=" << name << ",kind=" << kind);
    get_domain_metadata_result_t result = f_get_domain_metadata(name, kind);
    if (result.which() == 0)
      return false;

    meta.clear();
    for (const auto& item : boost::get<domain_metadata_result_t>(result))
      meta.push_back(item.second);

    logResult("value=" << boost::algorithm::join(meta, ", "));
    return true;
  }

  bool getDomainKeys(const DNSName& name, std::vector<DNSBackend::KeyData>& keys) override
  {
    if (f_get_domain_keys == nullptr)
      return false;

    logCall("get_domain_keys", "name=" << name);
    get_domain_keys_result_t result = f_get_domain_keys(name);

    if (result.which() == 0)
      return false;

    for (const auto& row : boost::get<vector<pair<int, keydata_result_t>>>(result)) {
      DNSBackend::KeyData key;
      key.published = true;
      for (const auto& item : row.second) {
        if (item.first == "content")
          key.content = boost::get<string>(item.second);
        else if (item.first == "id")
          key.id = static_cast<unsigned int>(boost::get<int>(item.second));
        else if (item.first == "flags")
          key.flags = static_cast<unsigned int>(boost::get<int>(item.second));
        else if (item.first == "active")
          key.active = boost::get<bool>(item.second);
        else if (item.first == "published")
          key.published = boost::get<bool>(item.second);
        else
          g_log << Logger::Warning << "[" << getPrefix() << "] Unsupported key '" << item.first << "' in keydata result" << endl;
      }
      logResult("id=" << key.id << ",flags=" << key.flags << ",active=" << (key.active ? "true" : "false") << ",published=" << (key.published ? "true" : "false"));
      keys.push_back(key);
    }

    return true;
  }

  bool getBeforeAndAfterNamesAbsolute(uint32_t id, const DNSName& qname, DNSName& unhashed, DNSName& before, DNSName& after) override
  {
    if (f_get_before_and_after_names_absolute == nullptr)
      return false;

    logCall("get_before_and_after_names_absolute", "id=<<" << id << ",qname=" << qname);
    get_before_and_after_names_absolute_result_t result = f_get_before_and_after_names_absolute(id, qname);

    if (result.which() == 0)
      return false;

    before_and_after_names_result_t row = boost::get<before_and_after_names_result_t>(result);
    if (row.size() != 3) {
      g_log << Logger::Error << "Invalid result from dns_get_before_and_after_names_absolute, expected array with 3 items, got " << row.size() << "item(s)" << endl;
      return false;
    }
    for (const auto& item : row) {
      DNSName value;
      if (item.second.which() == 0)
        value = DNSName(boost::get<string>(item.second));
      else
        value = DNSName(boost::get<DNSName>(item.second));
      if (item.first == "unhashed")
        unhashed = value;
      else if (item.first == "before")
        before = value;
      else if (item.first == "after")
        after = value;
      else {
        g_log << Logger::Error << "Invalid result from dns_get_before_and_after_names_absolute, unexpected key " << item.first << endl;
        return false;
      }
    }

    logResult("unhashed=" << unhashed << ",before=" << before << ",after=" << after);
    return true;
  }

private:
  std::list<DNSResourceRecord> d_result;
  bool d_debug_log{false};
  bool d_dnssec{false};

  lookup_call_t f_lookup;
  list_call_t f_list;

  get_domaininfo_call_t f_get_domaininfo;
  get_all_domains_call_t f_get_all_domains;

  get_domain_metadata_call_t f_get_domain_metadata;
  get_all_domain_metadata_call_t f_get_all_domain_metadata;

  get_domain_keys_call_t f_get_domain_keys;

  get_before_and_after_names_absolute_call_t f_get_before_and_after_names_absolute;

  set_notified_call_t f_set_notified;

  deinit_call_t f_deinit;
};

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	* MERCHANTAPILITY 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	#pragma once
23	#include "boost/lexical_cast.hpp"
24	#include "boost/algorithm/string/join.hpp"
25	#include "pdns/arguments.hh"
26
27	#include "pdns/dnsbackend.hh"
28	#include "pdns/lua-auth4.hh"
29
30	class Lua2BackendAPIv2 : public DNSBackend, AuthLua4
31	{
32	private:
33	typedef std::function<void()> init_call_t;
34	typedef std::function<void()> deinit_call_t;
35
36	typedef std::vector<std::pair<string, string>> lookup_context_t;
37
38	typedef std::vector<std::pair<int, std::vector<std::pair<string, boost::variant<bool, int, DNSName, string, QType>>>>> lookup_result_t;
39	typedef std::function<lookup_result_t(const QType& qtype, const DNSName& qname, int domain_id, const lookup_context_t& ctx)> lookup_call_t;
40
41	typedef boost::variant<bool, lookup_result_t> list_result_t;
42	typedef std::function<list_result_t(const DNSName& qname, int domain_id)> list_call_t;
43
44	typedef vector<pair<string, boost::variant<bool, long, string, vector<string>>>> domaininfo_result_t;
45	typedef boost::variant<bool, domaininfo_result_t> get_domaininfo_result_t;
46	typedef vector<pair<DNSName, domaininfo_result_t>> get_all_domains_result_t;
47	typedef std::function<get_domaininfo_result_t(const DNSName& domain)> get_domaininfo_call_t;
48	typedef std::function<get_all_domains_result_t()> get_all_domains_call_t;
49
50	typedef vector<pair<int, string>> domain_metadata_result_t;
51	typedef boost::variant<bool, domain_metadata_result_t> get_domain_metadata_result_t;
52	typedef boost::variant<bool, vector<pair<string, domain_metadata_result_t>>> get_all_domain_metadata_result_t;
53	typedef std::function<get_domain_metadata_result_t(const DNSName& domain, const string& kind)> get_domain_metadata_call_t;
54	typedef std::function<get_all_domain_metadata_result_t(const DNSName& domain)> get_all_domain_metadata_call_t;
55
56	typedef vector<pair<string, boost::variant<bool, int, string>>> keydata_result_t;
57	typedef boost::variant<bool, vector<pair<int, keydata_result_t>>> get_domain_keys_result_t;
58	typedef std::function<get_domain_keys_result_t(const DNSName& domain)> get_domain_keys_call_t;
59
60	typedef std::vector<std::pair<string, boost::variant<string, DNSName>>> before_and_after_names_result_t;
61	typedef boost::variant<bool, before_and_after_names_result_t> get_before_and_after_names_absolute_result_t;
62	typedef std::function<get_before_and_after_names_absolute_result_t(int id, const DNSName& qname)> get_before_and_after_names_absolute_call_t;
63
64	typedef std::function<void(int, long)> set_notified_call_t;
65
66	typedef std::function<string(const string& cmd)> direct_backend_cmd_call_t;
67
68	public:
69	Lua2BackendAPIv2(const string& suffix)
70	{	×
71	setArgPrefix("lua2" + suffix);	×
72	d_debug_log = mustDo("query-logging");	×
73	prepareContext();	×
74	loadFile(getArg("filename"));	×
75	}	×
76
77	~Lua2BackendAPIv2() override;
78
79	#define logCall(func, var) \
80	{ \	×
81	if (d_debug_log) { \	×
82	g_log << Logger::Debug << "[" << getPrefix() << "] Calling " << func << "(" << var << ")" << endl; \	×
83	} \	×
84	}	×
85	#define logResult(var) \
86	{ \	×
87	if (d_debug_log) { \	×
88	g_log << Logger::Debug << "[" << getPrefix() << "] Got result " \	×
89	<< "'" << var << "'" << endl; \	×
90	} \	×
91	}	×
92
93	void postPrepareContext() override
94	{	×
95	AuthLua4::postPrepareContext();	×
96	}	×
97
98	void postLoad() override
99	{	×
100	f_lookup = d_lw->readVariable<boost::optional<lookup_call_t>>("dns_lookup").get_value_or(0);	×
101	f_list = d_lw->readVariable<boost::optional<list_call_t>>("dns_list").get_value_or(0);	×
102	f_get_all_domains = d_lw->readVariable<boost::optional<get_all_domains_call_t>>("dns_get_all_domains").get_value_or(0);	×
103	f_get_domaininfo = d_lw->readVariable<boost::optional<get_domaininfo_call_t>>("dns_get_domaininfo").get_value_or(0);	×
104	f_get_domain_metadata = d_lw->readVariable<boost::optional<get_domain_metadata_call_t>>("dns_get_domain_metadata").get_value_or(0);	×
105	f_get_all_domain_metadata = d_lw->readVariable<boost::optional<get_all_domain_metadata_call_t>>("dns_get_all_domain_metadata").get_value_or(0);	×
106	f_get_domain_keys = d_lw->readVariable<boost::optional<get_domain_keys_call_t>>("dns_get_domain_keys").get_value_or(0);	×
107	f_get_before_and_after_names_absolute = d_lw->readVariable<boost::optional<get_before_and_after_names_absolute_call_t>>("dns_get_before_and_after_names_absolute").get_value_or(0);	×
108	f_set_notified = d_lw->readVariable<boost::optional<set_notified_call_t>>("dns_set_notified").get_value_or(0);	×
109
110	auto init = d_lw->readVariable<boost::optional<init_call_t>>("dns_init").get_value_or(0);	×
111	if (init)	×
112	init();	×
113
114	f_deinit = d_lw->readVariable<boost::optional<deinit_call_t>>("dns_deinit").get_value_or(0);	×
115
116	if (f_lookup == nullptr)	×
117	throw PDNSException("dns_lookup missing");	×
118
119	/* see if dnssec support is wanted */
120	d_dnssec = d_lw->readVariable<boost::optional<bool>>("dns_dnssec").get_value_or(false);	×
121	if (d_dnssec) {	×
122	if (f_get_domain_metadata == nullptr)	×
123	throw PDNSException("dns_dnssec is true but dns_get_domain_metadata is missing");	×
124	if (f_get_before_and_after_names_absolute == nullptr)	×
125	throw PDNSException("dns_dnssec is true but dns_get_before_and_after_names_absolute is missing");	×
126	/* domain keys is not strictly speaking necessary for dnssec backend */
127	if (f_get_domain_keys == nullptr)	×
128	g_log << Logger::Warning << "dns_get_domain_keys missing - cannot do live signing" << endl;	×
129	}	×
130	}	×
131
132	bool doesDNSSEC() override
133	{	×
134	return d_dnssec;	×
135	}	×
136
137	void parseLookup(const lookup_result_t& result)
138	{	×
139	for (const auto& row : result) {	×
140	DNSResourceRecord rec;	×
141	for (const auto& item : row.second) {	×
142	if (item.first == "type") {	×
143	if (item.second.which() == 1)	×
144	rec.qtype = QType(boost::get<int>(item.second));	×
145	else if (item.second.which() == 3)	×
146	rec.qtype = boost::get<string>(item.second);	×
147	else if (item.second.which() == 4)	×
148	rec.qtype = boost::get<QType>(item.second);	×
149	else	×
150	throw PDNSException("Unsupported value for type");	×
151	}	×
152	else if (item.first == "name") {	×
153	if (item.second.which() == 3)	×
154	rec.qname = DNSName(boost::get<string>(item.second));	×
155	else if (item.second.which() == 2)	×
156	rec.qname = boost::get<DNSName>(item.second);	×
157	else	×
158	throw PDNSException("Unsupported value for name");	×
159	}	×
160	else if (item.first == "domain_id")	×
161	rec.domain_id = boost::get<int>(item.second);	×
162	else if (item.first == "auth")	×
163	rec.auth = boost::get<bool>(item.second);	×
164	else if (item.first == "last_modified")	×
165	rec.last_modified = static_cast<time_t>(boost::get<int>(item.second));	×
166	else if (item.first == "ttl")	×
167	rec.ttl = boost::get<int>(item.second);	×
168	else if (item.first == "content")	×
169	rec.setContent(boost::get<string>(item.second));	×
170	else if (item.first == "scopeMask")	×
171	rec.scopeMask = boost::get<int>(item.second);	×
172	else	×
173	g_log << Logger::Warning << "Unsupported key '" << item.first << "' in lookup or list result" << endl;	×
174	}	×
175	logResult(rec.qname << " IN " << rec.qtype.toString() << " " << rec.ttl << " " << rec.getZoneRepresentation());	×
176	d_result.push_back(rec);	×
177	}	×
178	if (d_result.empty() && d_debug_log)	×
179	g_log << Logger::Debug << "[" << getPrefix() << "] Got empty result" << endl;	×
180	}	×
181
182	bool list(const DNSName& target, int domain_id, bool /* include_disabled */ = false) override
183	{	×
184	if (f_list == nullptr) {	×
185	g_log << Logger::Error << "[" << getPrefix() << "] dns_list missing - cannot do AXFR" << endl;	×
186	return false;	×
187	}	×
188
189	if (d_result.size() != 0)	×
190	throw PDNSException("list attempted while another was running");	×
191
192	logCall("list", "target=" << target << ",domain_id=" << domain_id);	×
193	list_result_t result = f_list(target, domain_id);	×
194
195	if (result.which() == 0)	×
196	return false;	×
197
198	parseLookup(boost::get<lookup_result_t>(result));	×
199
200	return true;	×
201	}	×
202
203	void lookup(const QType& qtype, const DNSName& qname, int domain_id, DNSPacket* p = nullptr) override
204	{	×
205	if (d_result.size() != 0)	×
206	throw PDNSException("lookup attempted while another was running");	×
207
208	lookup_context_t ctx;	×
209	if (p != NULL) {	×
210	ctx.emplace_back(lookup_context_t::value_type{"source_address", p->getInnerRemote().toString()});	×
211	ctx.emplace_back(lookup_context_t::value_type{"real_source_address", p->getRealRemote().toString()});	×
212	}	×
213
214	logCall("lookup", "qtype=" << qtype.toString() << ",qname=" << qname << ",domain_id=" << domain_id);	×
215	lookup_result_t result = f_lookup(qtype, qname, domain_id, ctx);	×
216	parseLookup(result);	×
217	}	×
218
219	bool get(DNSResourceRecord& rr) override
220	{	×
221	if (d_result.size() == 0)	×
222	return false;	×
223	rr = std::move(d_result.front());	×
224	d_result.pop_front();	×
225	return true;	×
226	}	×
227
228	string directBackendCmd(const string& querystr) override
229	{	×
230	string::size_type pos = querystr.find_first_of(" \t");	×
231	string cmd = querystr;	×
232	string par = "";	×
233	if (pos != string::npos) {	×
234	cmd = querystr.substr(0, pos);	×
235	par = querystr.substr(pos + 1);	×
236	}	×
237	direct_backend_cmd_call_t f = d_lw->readVariable<boost::optional<direct_backend_cmd_call_t>>(cmd).get_value_or(0);	×
238	if (f == nullptr) {	×
239	return cmd + "not found";	×
240	}	×
241	logCall(cmd, "parameter=" << par);	×
242	return f(par);	×
243	}	×
244
245	void setNotified(uint32_t id, uint32_t serial) override
246	{	×
247	if (f_set_notified == NULL)	×
248	return;	×
249	logCall("dns_set_notified", "id=" << static_cast<int>(id) << ",serial=" << serial);	×
250	f_set_notified(static_cast<int>(id), serial);	×
251	}	×
252
253	void parseDomainInfo(const domaininfo_result_t& row, DomainInfo& di)
254	{	×
255	for (const auto& item : row) {	×
256	if (item.first == "account")	×
257	di.account = boost::get<string>(item.second);	×
258	else if (item.first == "last_check")	×
259	di.last_check = static_cast<time_t>(boost::get<long>(item.second));	×
260	else if (item.first == "masters")	×
261	for (const auto& primary : boost::get<vector<string>>(item.second))	×
262	di.primaries.push_back(ComboAddress(primary, 53));	×
263	else if (item.first == "id")	×
264	di.id = static_cast<int>(boost::get<long>(item.second));	×
265	else if (item.first == "notified_serial")	×
266	di.notified_serial = static_cast<unsigned int>(boost::get<long>(item.second));	×
267	else if (item.first == "serial")	×
268	di.serial = static_cast<unsigned int>(boost::get<long>(item.second));	×
269	else if (item.first == "kind")	×
270	di.kind = DomainInfo::stringToKind(boost::get<string>(item.second));	×
271	else	×
272	g_log << Logger::Warning << "Unsupported key '" << item.first << "' in domaininfo result" << endl;	×
273	}	×
274	di.backend = this;	×
275	logResult("zone=" << di.zone << ",serial=" << di.serial << ",kind=" << di.getKindString());	×
276	}	×
277
278	bool getDomainInfo(const DNSName& domain, DomainInfo& di, bool /* getSerial */ = true) override
279	{	×
280	if (f_get_domaininfo == nullptr) {	×
281	// use getAuth instead
282	SOAData sd;	×
283	if (!getAuth(domain, &sd))	×
284	return false;	×
285
286	di.zone = domain;	×
287	di.backend = this;	×
288	di.serial = sd.serial;	×
289	return true;	×
290	}	×
291
292	logCall("get_domaininfo", "domain=" << domain);	×
293	get_domaininfo_result_t result = f_get_domaininfo(domain);	×
294
295	if (result.which() == 0)	×
296	return false;	×
297
298	di.zone = domain;	×
299	parseDomainInfo(boost::get<domaininfo_result_t>(result), di);	×
300
301	return true;	×
302	}	×
303
304	void getAllDomains(vector<DomainInfo>* domains, bool /* getSerial /, bool / include_disabled */) override
305	{	×
306	if (f_get_all_domains == nullptr)	×
307	return;	×
308
309	logCall("get_all_domains", "");	×
310	for (const auto& row : f_get_all_domains()) {	×
311	DomainInfo di;	×
312	di.zone = row.first;	×
313	logResult(di.zone);	×
314	parseDomainInfo(row.second, di);	×
315	domains->push_back(di);	×
316	}	×
317	}	×
318
319	bool getAllDomainMetadata(const DNSName& name, std::map<std::string, std::vector<std::string>>& meta) override
320	{	×
321	if (f_get_all_domain_metadata == nullptr)	×
322	return false;	×
323
324	logCall("get_all_domain_metadata", "name=" << name);	×
325	get_all_domain_metadata_result_t result = f_get_all_domain_metadata(name);	×
326	if (result.which() == 0)	×
327	return false;	×
328
329	for (const auto& row : boost::get<vector<pair<string, domain_metadata_result_t>>>(result)) {	×
330	meta[row.first].clear();	×
331	for (const auto& item : row.second)	×
332	meta[row.first].push_back(item.second);	×
333	logResult("kind=" << row.first << ",value=" << boost::algorithm::join(meta[row.first], ", "));	×
334	}	×
335
336	return true;	×
337	}	×
338
339	bool getDomainMetadata(const DNSName& name, const std::string& kind, std::vector<std::string>& meta) override
340	{	×
341	if (f_get_domain_metadata == nullptr)	×
342	return false;	×
343
344	logCall("get_domain_metadata", "name=" << name << ",kind=" << kind);	×
345	get_domain_metadata_result_t result = f_get_domain_metadata(name, kind);	×
346	if (result.which() == 0)	×
347	return false;	×
348
349	meta.clear();	×
350	for (const auto& item : boost::get<domain_metadata_result_t>(result))	×
351	meta.push_back(item.second);	×
352
353	logResult("value=" << boost::algorithm::join(meta, ", "));	×
354	return true;	×
355	}	×
356
357	bool getDomainKeys(const DNSName& name, std::vector<DNSBackend::KeyData>& keys) override
358	{	×
359	if (f_get_domain_keys == nullptr)	×
360	return false;	×
361
362	logCall("get_domain_keys", "name=" << name);	×
363	get_domain_keys_result_t result = f_get_domain_keys(name);	×
364
365	if (result.which() == 0)	×
366	return false;	×
367
368	for (const auto& row : boost::get<vector<pair<int, keydata_result_t>>>(result)) {	×
369	DNSBackend::KeyData key;	×
370	key.published = true;	×
371	for (const auto& item : row.second) {	×
372	if (item.first == "content")	×
373	key.content = boost::get<string>(item.second);	×
374	else if (item.first == "id")	×
375	key.id = static_cast<unsigned int>(boost::get<int>(item.second));	×
376	else if (item.first == "flags")	×
377	key.flags = static_cast<unsigned int>(boost::get<int>(item.second));	×
378	else if (item.first == "active")	×
379	key.active = boost::get<bool>(item.second);	×
380	else if (item.first == "published")	×
381	key.published = boost::get<bool>(item.second);	×
382	else	×
383	g_log << Logger::Warning << "[" << getPrefix() << "] Unsupported key '" << item.first << "' in keydata result" << endl;	×
384	}	×
385	logResult("id=" << key.id << ",flags=" << key.flags << ",active=" << (key.active ? "true" : "false") << ",published=" << (key.published ? "true" : "false"));	×
386	keys.push_back(key);	×
387	}	×
388
389	return true;	×
390	}	×
391
392	bool getBeforeAndAfterNamesAbsolute(uint32_t id, const DNSName& qname, DNSName& unhashed, DNSName& before, DNSName& after) override
393	{	×
394	if (f_get_before_and_after_names_absolute == nullptr)	×
395	return false;	×
396
397	logCall("get_before_and_after_names_absolute", "id=<<" << id << ",qname=" << qname);	×
398	get_before_and_after_names_absolute_result_t result = f_get_before_and_after_names_absolute(id, qname);	×
399
400	if (result.which() == 0)	×
401	return false;	×
402
403	before_and_after_names_result_t row = boost::get<before_and_after_names_result_t>(result);	×
404	if (row.size() != 3) {	×
405	g_log << Logger::Error << "Invalid result from dns_get_before_and_after_names_absolute, expected array with 3 items, got " << row.size() << "item(s)" << endl;	×
406	return false;	×
407	}	×
408	for (const auto& item : row) {	×
409	DNSName value;	×
410	if (item.second.which() == 0)	×
411	value = DNSName(boost::get<string>(item.second));	×
412	else	×
413	value = DNSName(boost::get<DNSName>(item.second));	×
414	if (item.first == "unhashed")	×
415	unhashed = value;	×
416	else if (item.first == "before")	×
417	before = value;	×
418	else if (item.first == "after")	×
419	after = value;	×
420	else {	×
421	g_log << Logger::Error << "Invalid result from dns_get_before_and_after_names_absolute, unexpected key " << item.first << endl;	×
422	return false;	×
423	}	×
424	}	×
425
426	logResult("unhashed=" << unhashed << ",before=" << before << ",after=" << after);	×
427	return true;	×
428	}	×
429
430	private:
431	std::list<DNSResourceRecord> d_result;
432	bool d_debug_log{false};
433	bool d_dnssec{false};
434
435	lookup_call_t f_lookup;
436	list_call_t f_list;
437
438	get_domaininfo_call_t f_get_domaininfo;
439	get_all_domains_call_t f_get_all_domains;
440
441	get_domain_metadata_call_t f_get_domain_metadata;
442	get_all_domain_metadata_call_t f_get_all_domain_metadata;
443
444	get_domain_keys_call_t f_get_domain_keys;
445
446	get_before_and_after_names_absolute_call_t f_get_before_and_after_names_absolute;
447
448	set_notified_call_t f_set_notified;
449
450	deinit_call_t f_deinit;
451	};

PowerDNS / pdns / 9829858019

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