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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.
*/
#ifndef WEBSERVER_HH
#define WEBSERVER_HH
#include <map>
#include <string>
#include <list>
#include <boost/utility.hpp>
#include <yahttp/yahttp.hpp>
#include "json11.hpp"
#include "namespaces.hh"
#include "sstuff.hh"
class WebServer;
class HttpRequest : public YaHTTP::Request {
public:
HttpRequest() : YaHTTP::Request(), accept_json(false), accept_html(false), complete(false) { };
bool accept_json;
bool accept_html;
bool complete;
json11::Json json();
// checks password _only_.
bool compareAuthorization(const string &expected_password);
bool compareHeader(const string &header_name, const string &expected_value);
};
class HttpResponse: public YaHTTP::Response {
public:
HttpResponse() : YaHTTP::Response() { };
HttpResponse(const YaHTTP::Response &resp) : YaHTTP::Response(resp) { };
void setBody(const json11::Json& document);
void setErrorResult(const std::string& message, const int status);
void setSuccessResult(const std::string& message, const int status = 200);
};
class HttpException
{
public:
HttpException(int status) : d_response()
{
d_response.status = status;
};
HttpResponse response()
{
return d_response;
}
protected:
HttpResponse d_response;
};
class HttpBadRequestException : public HttpException {
public:
HttpBadRequestException() : HttpException(400) { };
};
class HttpUnauthorizedException : public HttpException {
public:
HttpUnauthorizedException(string const &scheme) : HttpException(401)
{
d_response.headers["WWW-Authenticate"] = scheme + " realm=\"PowerDNS\"";
}
};
class HttpForbiddenException : public HttpException {
public:
HttpForbiddenException() : HttpException(403) { };
};
class HttpNotFoundException : public HttpException {
public:
HttpNotFoundException() : HttpException(404) { };
};
class HttpMethodNotAllowedException : public HttpException {
public:
HttpMethodNotAllowedException() : HttpException(405) { };
};
class HttpInternalServerErrorException : public HttpException {
public:
HttpInternalServerErrorException() : HttpException(500) { };
};
class ApiException : public runtime_error
{
public:
ApiException(const string& what) : runtime_error(what) {
}
};
class Server
{
public:
Server(const string &localaddress, int port) : d_local(localaddress.empty() ? "0.0.0.0" : localaddress, port), d_server_socket(d_local.sin4.sin_family, SOCK_STREAM, 0) {
d_server_socket.setReuseAddr();
d_server_socket.bind(d_local);
d_server_socket.listen();
}
ComboAddress d_local;
Socket *accept() {
return d_server_socket.accept();
}
protected:
Socket d_server_socket;
};
class WebServer : public boost::noncopyable
{
public:
WebServer(const string &listenaddress, int port);
void bind();
void go();
void serveConnection(Socket *client);
void handleRequest(HttpRequest& request, HttpResponse& resp);
typedef boost::function<void(HttpRequest* req, HttpResponse* resp)> HandlerFunction;
void registerApiHandler(const string& url, HandlerFunction handler);
void registerWebHandler(const string& url, HandlerFunction handler);
protected:
void registerBareHandler(const string& url, HandlerFunction handler);
virtual Server* createServer() {
return new Server(d_listenaddress, d_port);
}
string d_listenaddress;
int d_port;
string d_password;
Server* d_server;
};
#endif /* WEBSERVER_HH */
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