17089486438

Committed 20 Aug 2025 05:31AM UTC coverage: 64.683% (-1.2%) from 65.866%

Build # 17089486438

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Commit Message

Merge pull request #15991 from omoerbeek/boost-fix-system-lib-dep

Fix Boost system lib req: it is no longer a lib for boost >= 1.89

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0.0

/modules/remotebackend/httpconnector.cc

/*
 * 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.
 */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "remotebackend.hh"
#include <sys/socket.h>
#include <unistd.h>
#include <fcntl.h>

#include <sstream>
#include "pdns/lock.hh"

#ifndef UNIX_PATH_MAX
#define UNIX_PATH_MAX 108
#endif

HTTPConnector::HTTPConnector(std::map<std::string, std::string> options) :
  d_socket(nullptr)
{

  if (options.find("url") == options.end()) {
    throw PDNSException("Cannot find 'url' option in the remote backend HTTP connector's parameters");
  }

  this->d_url = options.find("url")->second;

  try {
    YaHTTP::URL url(d_url);
    d_host = url.host;
    d_port = url.port;
  }
  catch (const std::exception& e) {
    throw PDNSException("Error parsing the 'url' option provided to the remote backend HTTP connector: " + std::string(e.what()));
  }

  if (options.find("url-suffix") != options.end()) {
    this->d_url_suffix = options.find("url-suffix")->second;
  }
  else {
    this->d_url_suffix = "";
  }
  this->timeout = 2;
  this->d_post = false;
  this->d_post_json = false;

  if (options.find("timeout") != options.end()) {
    this->timeout = std::stoi(options.find("timeout")->second) / 1000;
  }
  if (options.find("post") != options.end()) {
    std::string val = options.find("post")->second;
    if (val == "yes" || val == "true" || val == "on" || val == "1") {
      this->d_post = true;
    }
  }
  if (options.find("post_json") != options.end()) {
    std::string val = options.find("post_json")->second;
    if (val == "yes" || val == "true" || val == "on" || val == "1") {
      this->d_post_json = true;
    }
  }
}

HTTPConnector::~HTTPConnector() = default;

void HTTPConnector::addUrlComponent(const Json& parameters, const string& element, std::stringstream& ss)
{
  std::string sparam;
  if (parameters[element] != Json()) {
    ss << "/" << YaHTTP::Utility::encodeURL(asString(parameters[element]), false);
  }
}

std::string HTTPConnector::buildMemberListArgs(const std::string& prefix, const Json& args)
{
  std::stringstream stream;

  for (const auto& pair : args.object_items()) {
    stream << prefix << "[" << YaHTTP::Utility::encodeURL(pair.first, false) << "]=";
    if (pair.second.is_bool()) {
      stream << (pair.second.bool_value() ? "1" : "0");
    }
    else if (!pair.second.is_null()) {
      stream << YaHTTP::Utility::encodeURL(HTTPConnector::asString(pair.second), false);
    }
    stream << "&";
  }

  return stream.str().substr(0, stream.str().size() - 1); // snip the trailing &
}

// builds our request (near-restful)
void HTTPConnector::restful_requestbuilder(const std::string& method, const Json& parameters, YaHTTP::Request& req)
{
  std::stringstream ss;
  std::string sparam;
  std::string verb;

  // special names are qname, name, zonename, kind, others go to headers

  ss << d_url;

  ss << "/" << method;

  // add the url components, if found, in following order.
  // id must be first due to the fact that the qname/name can be empty

  addUrlComponent(parameters, "id", ss);
  addUrlComponent(parameters, "domain_id", ss);
  addUrlComponent(parameters, "zonename", ss);
  addUrlComponent(parameters, "qname", ss);
  addUrlComponent(parameters, "name", ss);
  addUrlComponent(parameters, "kind", ss);
  addUrlComponent(parameters, "qtype", ss);

  // set the correct type of request based on method
  if (method == "activateDomainKey" || method == "deactivateDomainKey" || method == "publishDomainKey" || method == "unpublishDomainKey") {
    // create an empty post
    req.preparePost();
    verb = "POST";
  }
  else if (method == "setTSIGKey") {
    req.POST()["algorithm"] = parameters["algorithm"].string_value();
    req.POST()["content"] = parameters["content"].string_value();
    req.preparePost();
    verb = "PATCH";
  }
  else if (method == "deleteTSIGKey") {
    verb = "DELETE";
  }
  else if (method == "addDomainKey") {
    const Json& param = parameters["key"];
    req.POST()["flags"] = asString(param["flags"]);
    req.POST()["active"] = (param["active"].bool_value() ? "1" : "0");
    req.POST()["published"] = (param["published"].bool_value() ? "1" : "0");
    req.POST()["content"] = param["content"].string_value();
    req.preparePost();
    verb = "PUT";
  }
  else if (method == "superMasterBackend") {
    std::stringstream ss2;
    addUrlComponent(parameters, "ip", ss);
    addUrlComponent(parameters, "domain", ss);
    // then we need to serialize rrset payload into POST
    for (size_t index = 0; index < parameters["nsset"].array_items().size(); index++) {
      ss2 << buildMemberListArgs("nsset[" + std::to_string(index) + "]", parameters["nsset"][index]) << "&";
    }
    req.body = ss2.str().substr(0, ss2.str().size() - 1);
    req.headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8";
    req.headers["content-length"] = std::to_string(req.body.size());
    verb = "POST";
  }
  else if (method == "createSlaveDomain") {
    addUrlComponent(parameters, "ip", ss);
    addUrlComponent(parameters, "domain", ss);
    if (!parameters["account"].is_null() && parameters["account"].is_string()) {
      req.POST()["account"] = parameters["account"].string_value();
    }
    req.preparePost();
    verb = "PUT";
  }
  else if (method == "replaceRRSet") {
    std::stringstream ss2;
    for (size_t index = 0; index < parameters["rrset"].array_items().size(); index++) {
      ss2 << buildMemberListArgs("rrset[" + std::to_string(index) + "]", parameters["rrset"][index]) << "&";
    }
    req.body = ss2.str().substr(0, ss2.str().size() - 1); // remove trailing &
    req.headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8";
    req.headers["content-length"] = std::to_string(req.body.size());
    verb = "PATCH";
  }
  else if (method == "feedRecord") {
    addUrlComponent(parameters, "trxid", ss);
    req.body = buildMemberListArgs("rr", parameters["rr"]);
    req.headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8";
    req.headers["content-length"] = std::to_string(req.body.size());
    verb = "PATCH";
  }
  else if (method == "feedEnts") {
    std::stringstream ss2;
    addUrlComponent(parameters, "trxid", ss);
    for (const auto& param : parameters["nonterm"].array_items()) {
      ss2 << "nonterm[]=" << YaHTTP::Utility::encodeURL(param.string_value(), false) << "&";
    }
    for (const auto& param : parameters["auth"].array_items()) {
      ss2 << "auth[]=" << (param["auth"].bool_value() ? "1" : "0") << "&";
    }
    req.body = ss2.str().substr(0, ss2.str().size() - 1);
    req.headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8";
    req.headers["content-length"] = std::to_string(req.body.size());
    verb = "PATCH";
  }
  else if (method == "feedEnts3") {
    std::stringstream ss2;
    addUrlComponent(parameters, "domain", ss);
    addUrlComponent(parameters, "trxid", ss);
    ss2 << "times=" << parameters["times"].int_value() << "&salt=" << YaHTTP::Utility::encodeURL(parameters["salt"].string_value(), false) << "&narrow=" << (parameters["narrow"].bool_value() ? 1 : 0) << "&";
    for (const auto& param : parameters["nonterm"].array_items()) {
      ss2 << "nonterm[]=" << YaHTTP::Utility::encodeURL(param.string_value(), false) << "&";
    }
    for (const auto& param : parameters["auth"].array_items()) {
      ss2 << "auth[]=" << (param["auth"].bool_value() ? "1" : "0") << "&";
    }
    req.body = ss2.str().substr(0, ss2.str().size() - 1);
    req.headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8";
    req.headers["content-length"] = std::to_string(req.body.size());
    verb = "PATCH";
  }
  else if (method == "startTransaction") {
    addUrlComponent(parameters, "domain", ss);
    addUrlComponent(parameters, "trxid", ss);
    req.preparePost();
    verb = "POST";
  }
  else if (method == "commitTransaction" || method == "abortTransaction") {
    addUrlComponent(parameters, "trxid", ss);
    req.preparePost();
    verb = "POST";
  }
  else if (method == "setDomainMetadata") {
    // copy all metadata values into post
    std::stringstream ss2;
    // this one has values too
    if (parameters["value"].is_array()) {
      for (const auto& val : parameters["value"].array_items()) {
        ss2 << "value[]=" << YaHTTP::Utility::encodeURL(val.string_value(), false) << "&";
      }
    }
    req.body = ss2.str().substr(0, ss2.str().size() - 1);
    req.headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8";
    req.headers["content-length"] = std::to_string(req.body.size());
    verb = "PATCH";
  }
  else if (method == "removeDomainKey") {
    // this one is delete
    verb = "DELETE";
  }
  else if (method == "setNotified") {
    req.POST()["serial"] = asString(parameters["serial"]);
    req.preparePost();
    verb = "PATCH";
  }
  else if (method == "setStale") {
    req.preparePost();
    verb = "PATCH";
  }
  else if (method == "setFresh") {
    req.preparePost();
    verb = "PATCH";
  }
  else if (method == "directBackendCmd") {
    req.POST()["query"] = parameters["query"].string_value();
    req.preparePost();
    verb = "POST";
  }
  else if (method == "searchRecords" || method == "searchComments") {
    req.GET()["pattern"] = parameters["pattern"].string_value();
    req.GET()["maxResults"] = std::to_string(parameters["maxResults"].int_value());
    verb = "GET";
  }
  else if (method == "getAllDomains") {
    req.GET()["includeDisabled"] = (parameters["include_disabled"].bool_value() ? "true" : "false");
    verb = "GET";
  }
  else {
    // perform normal get
    verb = "GET";
  }

  // put everything else into headers
  for (const auto& pair : parameters.object_items()) {
    std::string member = pair.first;
    // whitelist header parameters
    if ((member == "trxid" || member == "local" || member == "remote" || member == "real-remote" || member == "zone-id")) {
      std::string hdr = "x-remotebackend-" + member;
      req.headers[hdr] = asString(pair.second);
    }
  };

  // finally add suffix and store url
  ss << d_url_suffix;

  req.setup(verb, ss.str());
  req.headers["accept"] = "application/json";
}

void HTTPConnector::post_requestbuilder(const Json& input, YaHTTP::Request& req)
{
  if (this->d_post_json) {
    std::string out = input.dump();
    req.setup("POST", d_url);
    // simple case, POST JSON into url. nothing fancy.
    req.headers["Content-Type"] = "text/javascript; charset=utf-8";
    req.headers["Content-Length"] = std::to_string(out.size());
    req.headers["accept"] = "application/json";
    req.body = out;
  }
  else {
    std::stringstream url;
    std::stringstream content;
    // call url/method.suffix
    url << d_url << "/" << input["method"].string_value() << d_url_suffix;
    req.setup("POST", url.str());
    // then build content
    req.POST()["parameters"] = input["parameters"].dump();
    req.preparePost();
    req.headers["accept"] = "application/json";
  }
}

int HTTPConnector::send_message(const Json& input)
{
  int rv = 0;
  int ec = 0;
  int fd = 0;

  std::vector<std::string> members;
  std::string method;
  std::ostringstream out;

  // perform request
  YaHTTP::Request req;

  if (d_post) {
    post_requestbuilder(input, req);
  }
  else {
    restful_requestbuilder(input["method"].string_value(), input["parameters"], req);
  }

  rv = -1;
  req.headers["connection"] = "Keep-Alive"; // see if we can streamline requests (not needed, strictly speaking)

  out << req;

  // try sending with current socket, if it fails retry with new socket
  if (this->d_socket != nullptr) {
    fd = this->d_socket->getHandle();
    // there should be no data waiting
    if (waitForRWData(fd, true, 0, 1) < 1) {
      try {
        d_socket->writenWithTimeout(out.str().c_str(), out.str().size(), timeout);
        rv = 1;
      }
      catch (NetworkError& ne) {
        g_log << Logger::Error << "While writing to HTTP endpoint " << d_addr.toStringWithPort() << ": " << ne.what() << std::endl;
      }
      catch (...) {
        g_log << Logger::Error << "While writing to HTTP endpoint " << d_addr.toStringWithPort() << ": exception caught" << std::endl;
      }
    }
  }

  if (rv == 1) {
    return rv;
  }

  this->d_socket.reset();

  // connect using tcp
  struct addrinfo* gAddr = nullptr;
  struct addrinfo* gAddrPtr = nullptr;
  struct addrinfo hints{};
  std::string sPort = std::to_string(d_port);
  memset(&hints, 0, sizeof hints);
  hints.ai_family = AF_UNSPEC;
  hints.ai_flags = AI_ADDRCONFIG;
  hints.ai_socktype = SOCK_STREAM;
  hints.ai_protocol = IPPROTO_TCP;
  if ((ec = getaddrinfo(d_host.c_str(), sPort.c_str(), &hints, &gAddr)) == 0) {
    // try to connect to each address.
    gAddrPtr = gAddr;

    while (gAddrPtr != nullptr) {
      try {
        d_socket = std::make_unique<Socket>(gAddrPtr->ai_family, gAddrPtr->ai_socktype, gAddrPtr->ai_protocol);
        d_addr.setSockaddr(gAddrPtr->ai_addr, gAddrPtr->ai_addrlen);
        d_socket->connect(d_addr);
        d_socket->setNonBlocking();
        d_socket->writenWithTimeout(out.str().c_str(), out.str().size(), timeout);
        rv = 1;
      }
      catch (NetworkError& ne) {
        g_log << Logger::Error << "While writing to HTTP endpoint " << d_addr.toStringWithPort() << ": " << ne.what() << std::endl;
      }
      catch (...) {
        g_log << Logger::Error << "While writing to HTTP endpoint " << d_addr.toStringWithPort() << ": exception caught" << std::endl;
      }

      if (rv > -1) {
        break;
      }
      d_socket.reset();
      gAddrPtr = gAddrPtr->ai_next;
    }
    freeaddrinfo(gAddr);
  }
  else {
    g_log << Logger::Error << "Unable to resolve " << d_host << ": " << gai_strerror(ec) << std::endl;
  }

  return rv;
}

int HTTPConnector::recv_message(Json& output)
{
  YaHTTP::AsyncResponseLoader arl;
  YaHTTP::Response resp;

  if (d_socket == nullptr) {
    return -1; // cannot receive :(
  }
  std::array<char, 4096> buffer{};
  time_t time0 = 0;

  arl.initialize(&resp);

  try {
    time0 = time(nullptr);
    while (!arl.ready() && (labs(time(nullptr) - time0) <= timeout)) {
      auto readBytes = d_socket->readWithTimeout(buffer.data(), buffer.size(), timeout);
      if (readBytes == 0) {
        throw NetworkError("EOF while reading");
      }
      arl.feed(std::string(buffer.data(), readBytes));
    }
    // timeout occurred.
    if (!arl.ready()) {
      throw NetworkError("timeout");
    }
  }
  catch (NetworkError& ne) {
    d_socket.reset();
    throw PDNSException("While reading from HTTP endpoint " + d_addr.toStringWithPort() + ": " + ne.what());
  }
  catch (...) {
    d_socket.reset();
    throw PDNSException("While reading from HTTP endpoint " + d_addr.toStringWithPort() + ": unknown error");
  }

  arl.finalize();

  if ((resp.status < 200 || resp.status >= 400) && resp.status != 404) {
    // bad.
    throw PDNSException("Received unacceptable HTTP status code " + std::to_string(resp.status) + " from HTTP endpoint " + d_addr.toStringWithPort());
  }

  std::string err;
  output = Json::parse(resp.body, err);
  if (output != nullptr) {
    return static_cast<int>(resp.body.size());
  }
  g_log << Logger::Error << "Cannot parse JSON reply: " << err << endl;

  return -1;
}

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	#ifdef HAVE_CONFIG_H
23	#include "config.h"
24	#endif
25	#include "remotebackend.hh"
26	#include <sys/socket.h>
27	#include <unistd.h>
28	#include <fcntl.h>
29
30	#include <sstream>
31	#include "pdns/lock.hh"
32
33	#ifndef UNIX_PATH_MAX
34	#define UNIX_PATH_MAX 108
35	#endif
36
37	HTTPConnector::HTTPConnector(std::map<std::string, std::string> options) :
38	d_socket(nullptr)
39	{	×
40
41	if (options.find("url") == options.end()) {	×
42	throw PDNSException("Cannot find 'url' option in the remote backend HTTP connector's parameters");	×
43	}	×
44
45	this->d_url = options.find("url")->second;	×
46
47	try {	×
48	YaHTTP::URL url(d_url);	×
49	d_host = url.host;	×
50	d_port = url.port;	×
51	}	×
52	catch (const std::exception& e) {	×
53	throw PDNSException("Error parsing the 'url' option provided to the remote backend HTTP connector: " + std::string(e.what()));	×
54	}	×
55
56	if (options.find("url-suffix") != options.end()) {	×
57	this->d_url_suffix = options.find("url-suffix")->second;	×
58	}	×
59	else {	×
60	this->d_url_suffix = "";	×
61	}	×
62	this->timeout = 2;	×
63	this->d_post = false;	×
64	this->d_post_json = false;	×
65
66	if (options.find("timeout") != options.end()) {	×
67	this->timeout = std::stoi(options.find("timeout")->second) / 1000;	×
68	}	×
69	if (options.find("post") != options.end()) {	×
70	std::string val = options.find("post")->second;	×
71	if (val == "yes" \|\| val == "true" \|\| val == "on" \|\| val == "1") {	×
72	this->d_post = true;	×
73	}	×
74	}	×
75	if (options.find("post_json") != options.end()) {	×
76	std::string val = options.find("post_json")->second;	×
77	if (val == "yes" \|\| val == "true" \|\| val == "on" \|\| val == "1") {	×
78	this->d_post_json = true;	×
79	}	×
80	}	×
81	}	×
82
83	HTTPConnector::~HTTPConnector() = default;	×
84
85	void HTTPConnector::addUrlComponent(const Json& parameters, const string& element, std::stringstream& ss)
86	{	×
87	std::string sparam;	×
88	if (parameters[element] != Json()) {	×
89	ss << "/" << YaHTTP::Utility::encodeURL(asString(parameters[element]), false);	×
90	}	×
91	}	×
92
93	std::string HTTPConnector::buildMemberListArgs(const std::string& prefix, const Json& args)
94	{	×
95	std::stringstream stream;	×
96
97	for (const auto& pair : args.object_items()) {	×
98	stream << prefix << "[" << YaHTTP::Utility::encodeURL(pair.first, false) << "]=";	×
99	if (pair.second.is_bool()) {	×
100	stream << (pair.second.bool_value() ? "1" : "0");	×
101	}	×
102	else if (!pair.second.is_null()) {	×
103	stream << YaHTTP::Utility::encodeURL(HTTPConnector::asString(pair.second), false);	×
104	}	×
105	stream << "&";	×
106	}	×
107
108	return stream.str().substr(0, stream.str().size() - 1); // snip the trailing &	×
109	}	×
110
111	// builds our request (near-restful)
112	void HTTPConnector::restful_requestbuilder(const std::string& method, const Json& parameters, YaHTTP::Request& req)
113	{	×
114	std::stringstream ss;	×
115	std::string sparam;	×
116	std::string verb;	×
117
118	// special names are qname, name, zonename, kind, others go to headers
119
120	ss << d_url;	×
121
122	ss << "/" << method;	×
123
124	// add the url components, if found, in following order.
125	// id must be first due to the fact that the qname/name can be empty
126
127	addUrlComponent(parameters, "id", ss);	×
128	addUrlComponent(parameters, "domain_id", ss);	×
129	addUrlComponent(parameters, "zonename", ss);	×
130	addUrlComponent(parameters, "qname", ss);	×
131	addUrlComponent(parameters, "name", ss);	×
132	addUrlComponent(parameters, "kind", ss);	×
133	addUrlComponent(parameters, "qtype", ss);	×
134
135	// set the correct type of request based on method
136	if (method == "activateDomainKey" \|\| method == "deactivateDomainKey" \|\| method == "publishDomainKey" \|\| method == "unpublishDomainKey") {	×
137	// create an empty post
138	req.preparePost();	×
139	verb = "POST";	×
140	}	×
141	else if (method == "setTSIGKey") {	×
142	req.POST()["algorithm"] = parameters["algorithm"].string_value();	×
143	req.POST()["content"] = parameters["content"].string_value();	×
144	req.preparePost();	×
145	verb = "PATCH";	×
146	}	×
147	else if (method == "deleteTSIGKey") {	×
148	verb = "DELETE";	×
149	}	×
150	else if (method == "addDomainKey") {	×
151	const Json& param = parameters["key"];	×
152	req.POST()["flags"] = asString(param["flags"]);	×
153	req.POST()["active"] = (param["active"].bool_value() ? "1" : "0");	×
154	req.POST()["published"] = (param["published"].bool_value() ? "1" : "0");	×
155	req.POST()["content"] = param["content"].string_value();	×
156	req.preparePost();	×
157	verb = "PUT";	×
158	}	×
159	else if (method == "superMasterBackend") {	×
160	std::stringstream ss2;	×
161	addUrlComponent(parameters, "ip", ss);	×
162	addUrlComponent(parameters, "domain", ss);	×
163	// then we need to serialize rrset payload into POST
164	for (size_t index = 0; index < parameters["nsset"].array_items().size(); index++) {	×
165	ss2 << buildMemberListArgs("nsset[" + std::to_string(index) + "]", parameters["nsset"][index]) << "&";	×
166	}	×
167	req.body = ss2.str().substr(0, ss2.str().size() - 1);	×
168	req.headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8";	×
169	req.headers["content-length"] = std::to_string(req.body.size());	×
170	verb = "POST";	×
171	}	×
172	else if (method == "createSlaveDomain") {	×
173	addUrlComponent(parameters, "ip", ss);	×
174	addUrlComponent(parameters, "domain", ss);	×
175	if (!parameters["account"].is_null() && parameters["account"].is_string()) {	×
176	req.POST()["account"] = parameters["account"].string_value();	×
177	}	×
178	req.preparePost();	×
179	verb = "PUT";	×
180	}	×
181	else if (method == "replaceRRSet") {	×
182	std::stringstream ss2;	×
183	for (size_t index = 0; index < parameters["rrset"].array_items().size(); index++) {	×
184	ss2 << buildMemberListArgs("rrset[" + std::to_string(index) + "]", parameters["rrset"][index]) << "&";	×
185	}	×
186	req.body = ss2.str().substr(0, ss2.str().size() - 1); // remove trailing &	×
187	req.headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8";	×
188	req.headers["content-length"] = std::to_string(req.body.size());	×
189	verb = "PATCH";	×
190	}	×
191	else if (method == "feedRecord") {	×
192	addUrlComponent(parameters, "trxid", ss);	×
193	req.body = buildMemberListArgs("rr", parameters["rr"]);	×
194	req.headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8";	×
195	req.headers["content-length"] = std::to_string(req.body.size());	×
196	verb = "PATCH";	×
197	}	×
198	else if (method == "feedEnts") {	×
199	std::stringstream ss2;	×
200	addUrlComponent(parameters, "trxid", ss);	×
201	for (const auto& param : parameters["nonterm"].array_items()) {	×
202	ss2 << "nonterm[]=" << YaHTTP::Utility::encodeURL(param.string_value(), false) << "&";	×
203	}	×
204	for (const auto& param : parameters["auth"].array_items()) {	×
205	ss2 << "auth[]=" << (param["auth"].bool_value() ? "1" : "0") << "&";	×
206	}	×
207	req.body = ss2.str().substr(0, ss2.str().size() - 1);	×
208	req.headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8";	×
209	req.headers["content-length"] = std::to_string(req.body.size());	×
210	verb = "PATCH";	×
211	}	×
212	else if (method == "feedEnts3") {	×
213	std::stringstream ss2;	×
214	addUrlComponent(parameters, "domain", ss);	×
215	addUrlComponent(parameters, "trxid", ss);	×
216	ss2 << "times=" << parameters["times"].int_value() << "&salt=" << YaHTTP::Utility::encodeURL(parameters["salt"].string_value(), false) << "&narrow=" << (parameters["narrow"].bool_value() ? 1 : 0) << "&";	×
217	for (const auto& param : parameters["nonterm"].array_items()) {	×
218	ss2 << "nonterm[]=" << YaHTTP::Utility::encodeURL(param.string_value(), false) << "&";	×
219	}	×
220	for (const auto& param : parameters["auth"].array_items()) {	×
221	ss2 << "auth[]=" << (param["auth"].bool_value() ? "1" : "0") << "&";	×
222	}	×
223	req.body = ss2.str().substr(0, ss2.str().size() - 1);	×
224	req.headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8";	×
225	req.headers["content-length"] = std::to_string(req.body.size());	×
226	verb = "PATCH";	×
227	}	×
228	else if (method == "startTransaction") {	×
229	addUrlComponent(parameters, "domain", ss);	×
230	addUrlComponent(parameters, "trxid", ss);	×
231	req.preparePost();	×
232	verb = "POST";	×
233	}	×
234	else if (method == "commitTransaction" \|\| method == "abortTransaction") {	×
235	addUrlComponent(parameters, "trxid", ss);	×
236	req.preparePost();	×
237	verb = "POST";	×
238	}	×
239	else if (method == "setDomainMetadata") {	×
240	// copy all metadata values into post
241	std::stringstream ss2;	×
242	// this one has values too
243	if (parameters["value"].is_array()) {	×
244	for (const auto& val : parameters["value"].array_items()) {	×
245	ss2 << "value[]=" << YaHTTP::Utility::encodeURL(val.string_value(), false) << "&";	×
246	}	×
247	}	×
248	req.body = ss2.str().substr(0, ss2.str().size() - 1);	×
249	req.headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8";	×
250	req.headers["content-length"] = std::to_string(req.body.size());	×
251	verb = "PATCH";	×
252	}	×
253	else if (method == "removeDomainKey") {	×
254	// this one is delete
255	verb = "DELETE";	×
256	}	×
257	else if (method == "setNotified") {	×
258	req.POST()["serial"] = asString(parameters["serial"]);	×
259	req.preparePost();	×
260	verb = "PATCH";	×
261	}	×
262	else if (method == "setStale") {	×
263	req.preparePost();	×
264	verb = "PATCH";	×
265	}	×
266	else if (method == "setFresh") {	×
267	req.preparePost();	×
268	verb = "PATCH";	×
269	}	×
270	else if (method == "directBackendCmd") {	×
271	req.POST()["query"] = parameters["query"].string_value();	×
272	req.preparePost();	×
273	verb = "POST";	×
274	}	×
275	else if (method == "searchRecords" \|\| method == "searchComments") {	×
276	req.GET()["pattern"] = parameters["pattern"].string_value();	×
277	req.GET()["maxResults"] = std::to_string(parameters["maxResults"].int_value());	×
278	verb = "GET";	×
279	}	×
280	else if (method == "getAllDomains") {	×
281	req.GET()["includeDisabled"] = (parameters["include_disabled"].bool_value() ? "true" : "false");	×
282	verb = "GET";	×
283	}	×
284	else {	×
285	// perform normal get
286	verb = "GET";	×
287	}	×
288
289	// put everything else into headers
290	for (const auto& pair : parameters.object_items()) {	×
291	std::string member = pair.first;	×
292	// whitelist header parameters
293	if ((member == "trxid" \|\| member == "local" \|\| member == "remote" \|\| member == "real-remote" \|\| member == "zone-id")) {	×
294	std::string hdr = "x-remotebackend-" + member;	×
295	req.headers[hdr] = asString(pair.second);	×
296	}	×
297	};	×
298
299	// finally add suffix and store url
300	ss << d_url_suffix;	×
301
302	req.setup(verb, ss.str());	×
303	req.headers["accept"] = "application/json";	×
304	}	×
305
306	void HTTPConnector::post_requestbuilder(const Json& input, YaHTTP::Request& req)
307	{	×
308	if (this->d_post_json) {	×
309	std::string out = input.dump();	×
310	req.setup("POST", d_url);	×
311	// simple case, POST JSON into url. nothing fancy.
312	req.headers["Content-Type"] = "text/javascript; charset=utf-8";	×
313	req.headers["Content-Length"] = std::to_string(out.size());	×
314	req.headers["accept"] = "application/json";	×
315	req.body = out;	×
316	}	×
317	else {	×
318	std::stringstream url;	×
319	std::stringstream content;	×
320	// call url/method.suffix
321	url << d_url << "/" << input["method"].string_value() << d_url_suffix;	×
322	req.setup("POST", url.str());	×
323	// then build content
324	req.POST()["parameters"] = input["parameters"].dump();	×
325	req.preparePost();	×
326	req.headers["accept"] = "application/json";	×
327	}	×
328	}	×
329
330	int HTTPConnector::send_message(const Json& input)
331	{	×
332	int rv = 0;	×
333	int ec = 0;	×
334	int fd = 0;	×
335
336	std::vector<std::string> members;	×
337	std::string method;	×
338	std::ostringstream out;	×
339
340	// perform request
341	YaHTTP::Request req;	×
342
343	if (d_post) {	×
344	post_requestbuilder(input, req);	×
345	}	×
346	else {	×
347	restful_requestbuilder(input["method"].string_value(), input["parameters"], req);	×
348	}	×
349
350	rv = -1;	×
351	req.headers["connection"] = "Keep-Alive"; // see if we can streamline requests (not needed, strictly speaking)	×
352
353	out << req;	×
354
355	// try sending with current socket, if it fails retry with new socket
356	if (this->d_socket != nullptr) {	×
357	fd = this->d_socket->getHandle();	×
358	// there should be no data waiting
359	if (waitForRWData(fd, true, 0, 1) < 1) {	×
360	try {	×
361	d_socket->writenWithTimeout(out.str().c_str(), out.str().size(), timeout);	×
362	rv = 1;	×
363	}	×
364	catch (NetworkError& ne) {	×
365	g_log << Logger::Error << "While writing to HTTP endpoint " << d_addr.toStringWithPort() << ": " << ne.what() << std::endl;	×
366	}	×
367	catch (...) {	×
368	g_log << Logger::Error << "While writing to HTTP endpoint " << d_addr.toStringWithPort() << ": exception caught" << std::endl;	×
369	}	×
370	}	×
371	}	×
372
373	if (rv == 1) {	×
374	return rv;	×
375	}	×
376
377	this->d_socket.reset();	×
378
379	// connect using tcp
380	struct addrinfo* gAddr = nullptr;	×
381	struct addrinfo* gAddrPtr = nullptr;	×
382	struct addrinfo hints{};	×
383	std::string sPort = std::to_string(d_port);	×
384	memset(&hints, 0, sizeof hints);	×
385	hints.ai_family = AF_UNSPEC;	×
386	hints.ai_flags = AI_ADDRCONFIG;	×
387	hints.ai_socktype = SOCK_STREAM;	×
388	hints.ai_protocol = IPPROTO_TCP;	×
389	if ((ec = getaddrinfo(d_host.c_str(), sPort.c_str(), &hints, &gAddr)) == 0) {	×
390	// try to connect to each address.
391	gAddrPtr = gAddr;	×
392
393	while (gAddrPtr != nullptr) {	×
394	try {	×
395	d_socket = std::make_unique<Socket>(gAddrPtr->ai_family, gAddrPtr->ai_socktype, gAddrPtr->ai_protocol);	×
396	d_addr.setSockaddr(gAddrPtr->ai_addr, gAddrPtr->ai_addrlen);	×
397	d_socket->connect(d_addr);	×
398	d_socket->setNonBlocking();	×
399	d_socket->writenWithTimeout(out.str().c_str(), out.str().size(), timeout);	×
400	rv = 1;	×
401	}	×
402	catch (NetworkError& ne) {	×
403	g_log << Logger::Error << "While writing to HTTP endpoint " << d_addr.toStringWithPort() << ": " << ne.what() << std::endl;	×
404	}	×
405	catch (...) {	×
406	g_log << Logger::Error << "While writing to HTTP endpoint " << d_addr.toStringWithPort() << ": exception caught" << std::endl;	×
407	}	×
408
409	if (rv > -1) {	×
410	break;	×
411	}	×
412	d_socket.reset();	×
413	gAddrPtr = gAddrPtr->ai_next;	×
414	}	×
415	freeaddrinfo(gAddr);	×
416	}	×
417	else {	×
418	g_log << Logger::Error << "Unable to resolve " << d_host << ": " << gai_strerror(ec) << std::endl;	×
419	}	×
420
421	return rv;	×
422	}	×
423
424	int HTTPConnector::recv_message(Json& output)
425	{	×
426	YaHTTP::AsyncResponseLoader arl;	×
427	YaHTTP::Response resp;	×
428
429	if (d_socket == nullptr) {	×
430	return -1; // cannot receive :(	×
431	}	×
432	std::array<char, 4096> buffer{};	×
433	time_t time0 = 0;	×
434
435	arl.initialize(&resp);	×
436
437	try {	×
438	time0 = time(nullptr);	×
439	while (!arl.ready() && (labs(time(nullptr) - time0) <= timeout)) {	×
440	auto readBytes = d_socket->readWithTimeout(buffer.data(), buffer.size(), timeout);	×
441	if (readBytes == 0) {	×
442	throw NetworkError("EOF while reading");	×
443	}	×
444	arl.feed(std::string(buffer.data(), readBytes));	×
445	}	×
446	// timeout occurred.
447	if (!arl.ready()) {	×
448	throw NetworkError("timeout");	×
449	}	×
450	}	×
451	catch (NetworkError& ne) {	×
452	d_socket.reset();	×
453	throw PDNSException("While reading from HTTP endpoint " + d_addr.toStringWithPort() + ": " + ne.what());	×
454	}	×
455	catch (...) {	×
456	d_socket.reset();	×
457	throw PDNSException("While reading from HTTP endpoint " + d_addr.toStringWithPort() + ": unknown error");	×
458	}	×
459
460	arl.finalize();	×
461
462	if ((resp.status < 200 \|\| resp.status >= 400) && resp.status != 404) {	×
463	// bad.
464	throw PDNSException("Received unacceptable HTTP status code " + std::to_string(resp.status) + " from HTTP endpoint " + d_addr.toStringWithPort());	×
465	}	×
466
467	std::string err;	×
468	output = Json::parse(resp.body, err);	×
469	if (output != nullptr) {	×
470	return static_cast<int>(resp.body.size());	×
471	}	×
472	g_log << Logger::Error << "Cannot parse JSON reply: " << err << endl;	×
473
474	return -1;	×
475	}	×

PowerDNS / pdns / 17089486438

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