X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_httpd.cpp;h=f3ec3298bd8823b154b4c9fb5017159ba7bea800;hb=HEAD;hp=6ff80ad807ca15322fe3fe7fd8addbb3dcb9ebd0;hpb=bab14f0dd2345c9d7dcbc47c918563709e1ac094;p=user%2Fhenk%2Fcode%2Finspircd.git

diff --git a/src/modules/m_httpd.cpp b/src/modules/m_httpd.cpp
index 6ff80ad80..f3ec3298b 100644
--- a/src/modules/m_httpd.cpp
+++ b/src/modules/m_httpd.cpp
@@ -1 +1,489 @@
-/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
 * See: http://www.inspircd.org/wiki/index.php/Credits
 *
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

#include "inspircd.h"
#include <algorithm>
#include "modules.h"
#include "httpd.h"

/* $ModDesc: Provides HTTP serving facilities to modules */

class ModuleHttpServer;

static ModuleHttpServer* HttpModule;
static bool claimed;

/** HTTP socket states
 */
enum HttpState
{
	HTTP_LISTEN = 0,
	HTTP_SERVE_WAIT_REQUEST = 1,
	HTTP_SERVE_RECV_POSTDATA = 2,
	HTTP_SERVE_SEND_DATA = 3
};

class HttpServerSocket;

/** This class is used to handle HTTP socket timeouts
 */
class HttpServerTimeout : public InspTimer
{
 private:
	/** HttpServerSocket we are attached to
	 */
	HttpServerSocket* s;
	/** Socketengine the file descriptor is in
	 */
	SocketEngine* SE;
 public:
	/** Attach timeout to HttpServerSocket
	 */
	HttpServerTimeout(HttpServerSocket* sock, SocketEngine* engine);
	/** Handle timer tick
	 */
	void Tick(time_t TIME);
};

/** A socket used for HTTP transport
 */
class HttpServerSocket : public InspSocket
{
	FileReader* index;
	HttpState InternalState;
	std::stringstream headers;
	std::string postdata;
	std::string request_type;
	std::string uri;
	std::string http_version;
	unsigned int postsize;
	HttpServerTimeout* Timeout;

 public:

	HttpServerSocket(InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, FileReader* index_page) : InspSocket(SI, host, port, listening, maxtime), index(index_page), postsize(0)
	{
		InternalState = HTTP_LISTEN;
		Timeout = NULL;
	}

	HttpServerSocket(InspIRCd* SI, int newfd, char* ip, FileReader* ind) : InspSocket(SI, newfd, ip), index(ind), postsize(0)
	{
		InternalState = HTTP_SERVE_WAIT_REQUEST;
		Timeout = new HttpServerTimeout(this, Instance->SE);
		Instance->Timers->AddTimer(Timeout);
	}

	FileReader* GetIndex()
	{
		return index;
	}

	~HttpServerSocket()
	{
		if (Timeout)
		{
			if (Instance->Time() < Timeout->GetTimer())
				Instance->Timers->DelTimer(Timeout);
			Timeout = NULL;
		}
	}

	virtual int OnIncomingConnection(int newsock, char* ip)
	{
		if (InternalState == HTTP_LISTEN)
		{
			HttpServerSocket* s = new HttpServerSocket(this->Instance, newsock, ip, index);
			s = s; /* Stop GCC whining */
		}
		return true;
	}

	virtual void OnClose()
	{
	}

	std::string Response(int response)
	{
		switch (response)
		{
			case 100:
				return "CONTINUE";
			case 101:
				return "SWITCHING PROTOCOLS";
			case 200:
				return "OK";
			case 201:
				return "CREATED";
			case 202:
				return "ACCEPTED";
			case 203:
				return "NON-AUTHORITATIVE INFORMATION";
			case 204:
				return "NO CONTENT";
			case 205:
				return "RESET CONTENT";
			case 206:
				return "PARTIAL CONTENT";
			case 300:
				return "MULTIPLE CHOICES";
			case 301:
				return "MOVED PERMENANTLY";
			case 302:
				return "FOUND";
			case 303:
				return "SEE OTHER";
			case 304:
				return "NOT MODIFIED";
			case 305:
				return "USE PROXY";
			case 307:
				return "TEMPORARY REDIRECT";
			case 400:
				return "BAD REQUEST";
			case 401:
				return "UNAUTHORIZED";
			case 402:
				return "PAYMENT REQUIRED";
			case 403:
				return "FORBIDDEN";
			case 404:
				return "NOT FOUND";
			case 405:
				return "METHOD NOT ALLOWED";
			case 406:
				return "NOT ACCEPTABLE";
			case 407:
				return "PROXY AUTHENTICATION REQUIRED";
			case 408:
				return "REQUEST TIMEOUT";
			case 409:
				return "CONFLICT";
			case 410:
				return "GONE";
			case 411:
				return "LENGTH REQUIRED";
			case 412:
				return "PRECONDITION FAILED";
			case 413:
				return "REQUEST ENTITY TOO LARGE";
			case 414:
				return "REQUEST-URI TOO LONG";
			case 415:
				return "UNSUPPORTED MEDIA TYPE";
			case 416:
				return "REQUESTED RANGE NOT SATISFIABLE";
			case 417:
				return "EXPECTATION FAILED";
			case 500:
				return "INTERNAL SERVER ERROR";
			case 501:
				return "NOT IMPLEMENTED";
			case 502:
				return "BAD GATEWAY";
			case 503:
				return "SERVICE UNAVAILABLE";
			case 504:
				return "GATEWAY TIMEOUT";
			case 505:
				return "HTTP VERSION NOT SUPPORTED";
			default:
				return "WTF";
			break;
				
		}
	}

	void SendHeaders(unsigned long size, int response, const std::string &extraheaders)
	{
		time_t local = this->Instance->Time();
		struct tm *timeinfo = gmtime(&local);
		this->Write("HTTP/1.1 "+ConvToStr(response)+" "+Response(response)+"\r\nDate: ");
		this->Write(asctime(timeinfo));
		if (extraheaders.empty())
		{
			this->Write("Content-Type: text/html\r\n");
		}
		else
		{
			this->Write(extraheaders);
		}
		this->Write("Server: InspIRCd/m_httpd.so/1.1\r\nContent-Length: "+ConvToStr(size)+
				"\r\nConnection: close\r\n\r\n");
	}

	virtual bool OnDataReady()
	{
		char* data = this->Read();

		/* Check that the data read is a valid pointer and it has some content */
		if (data && *data)
		{
			headers << data;

			if (headers.str().find("\r\n\r\n") != std::string::npos)
			{
				if (request_type.empty())
				{
					headers >> request_type;
					headers >> uri;
					headers >> http_version;

					std::transform(request_type.begin(), request_type.end(), request_type.begin(), ::toupper);
					std::transform(http_version.begin(), http_version.end(), http_version.begin(), ::toupper);
				}

				if ((InternalState == HTTP_SERVE_WAIT_REQUEST) && (request_type == "POST"))
				{
					/* Do we need to fetch postdata? */
					postdata.clear();
					InternalState = HTTP_SERVE_RECV_POSTDATA;
					std::string header_item;
					while (headers >> header_item)
					{
						if (header_item == "Content-Length:")
						{
							headers >> header_item;
							postsize = atoi(header_item.c_str());
						}
					}
					if (!postsize)
					{
						InternalState = HTTP_SERVE_SEND_DATA;
						SendHeaders(0, 400, "");
						Timeout = new HttpServerTimeout(this, Instance->SE);
						Instance->Timers->AddTimer(Timeout);
					}
					else
					{
						std::string::size_type x = headers.str().find("\r\n\r\n");
						postdata = headers.str().substr(x+4, headers.str().length());
						/* Get content length and store */
						if (postdata.length() >= postsize)
							ServeData();
					}
				}
				else if (InternalState == HTTP_SERVE_RECV_POSTDATA)
				{
					/* Add postdata, once we have it all, send the event */
					postdata.append(data);
					if (postdata.length() >= postsize)
						ServeData();
				}
				else
				{
					ServeData();
				}
				return true;
			}
			return true;
		}
		else
		{
			return false;
		}
	}

	void ServeData()
	{
		/* Headers are complete */
		InternalState = HTTP_SERVE_SEND_DATA;

		Instance->Timers->DelTimer(Timeout);
		Timeout = NULL;
	
		if ((http_version != "HTTP/1.1") && (http_version != "HTTP/1.0"))
		{
			SendHeaders(0, 505, "");
		}
		else
		{
			if ((request_type == "GET") && (uri == "/"))
			{
				SendHeaders(index->ContentSize(), 200, "");
				this->Write(index->Contents());
			}
			else
			{
				claimed = false;
				HTTPRequest httpr(request_type,uri,&headers,this,this->GetIP(),postdata);
				Event e((char*)&httpr, (Module*)HttpModule, "httpd_url");
				e.Send(this->Instance);
				if (!claimed)
				{
					SendHeaders(0, 404, "");
				}
			}
		}
		Timeout = new HttpServerTimeout(this, Instance->SE);
		Instance->Timers->AddTimer(Timeout);
	}

	void Page(std::stringstream* n, int response, std::string& extraheaders)
	{
		SendHeaders(n->str().length(), response, extraheaders);
		this->Write(n->str());
	}
};

HttpServerTimeout::HttpServerTimeout(HttpServerSocket* sock, SocketEngine* engine) : InspTimer(60, time(NULL)), s(sock), SE(engine)
{
}

void HttpServerTimeout::Tick(time_t TIME)
{
	SE->DelFd(s);
	s->Close();
}

class ModuleHttpServer : public Module
{
	std::vector<HttpServerSocket*> httpsocks;
 public:

	void ReadConfig()
	{
		int port;
		std::string host;
		std::string bindip;
		std::string indexfile;
		FileReader* index;
		HttpServerSocket* http;
		ConfigReader c(ServerInstance);

		httpsocks.clear();

		for (int i = 0; i < c.Enumerate("http"); i++)
		{
			host = c.ReadValue("http", "host", i);
			bindip = c.ReadValue("http", "ip", i);
			port = c.ReadInteger("http", "port", i, true);
			indexfile = c.ReadValue("http", "index", i);
			index = new FileReader(ServerInstance, indexfile);
			if (!index->Exists())
				throw ModuleException("Can't read index file: "+indexfile);
			http = new HttpServerSocket(ServerInstance, bindip, port, true, 0, index);
			httpsocks.push_back(http);
		}
	}

	ModuleHttpServer(InspIRCd* Me) : Module(Me)
	{
		ReadConfig();
	}

	void OnEvent(Event* event)
	{
	}

	char* OnRequest(Request* request)
	{
		claimed = true;
		HTTPDocument* doc = (HTTPDocument*)request->GetData();
		HttpServerSocket* sock = (HttpServerSocket*)doc->sock;
		sock->Page(doc->GetDocument(), doc->GetResponseCode(), doc->GetExtraHeaders());
		return NULL;
	}

	void Implements(char* List)
	{
		List[I_OnEvent] = List[I_OnRequest] = 1;
	}

	virtual ~ModuleHttpServer()
	{
		for (size_t i = 0; i < httpsocks.size(); i++)
		{
			ServerInstance->SE->DelFd(httpsocks[i]);
			delete httpsocks[i]->GetIndex();
			delete httpsocks[i];
		}
	}

	virtual Version GetVersion()
	{
		return Version(1,1,0,0,VF_VENDOR|VF_SERVICEPROVIDER,API_VERSION);
	}
};

MODULE_INIT(ModuleHttpServer)
\ No newline at end of file
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2019 linuxdaemon <linuxdaemon.irc@gmail.com>
+ *   Copyright (C) 2018 edef <edef@edef.eu>
+ *   Copyright (C) 2013-2014, 2017-2020 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2012-2016 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
+ *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2007 John Brooks <special@inspircd.org>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2006, 2008, 2010 Craig Edwards <brain@inspircd.org>
+ *
+ * This file is part of InspIRCd.  InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+/// $CompilerFlags: -Ivendor_directory("http_parser")
+
+
+#include "inspircd.h"
+#include "iohook.h"
+#include "modules/httpd.h"
+
+#ifdef __GNUC__
+# pragma GCC diagnostic push
+#endif
+
+// Fix warnings about the use of commas at end of enumerator lists and long long
+// on C++03.
+#if defined __clang__
+# pragma clang diagnostic ignored "-Wc++11-extensions"
+# pragma clang diagnostic ignored "-Wc++11-long-long"
+#elif defined __GNUC__
+# pragma GCC diagnostic ignored "-Wlong-long"
+# if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 8))
+#  pragma GCC diagnostic ignored "-Wpedantic"
+# else
+#  pragma GCC diagnostic ignored "-pedantic"
+# endif
+#endif
+
+// Fix warnings about shadowing in http_parser.
+#ifdef __GNUC__
+# pragma GCC diagnostic ignored "-Wshadow"
+#endif
+
+#include <http_parser.c>
+
+#ifdef __GNUC__
+# pragma GCC diagnostic pop
+#endif
+
+class ModuleHttpServer;
+
+static ModuleHttpServer* HttpModule;
+static insp::intrusive_list<HttpServerSocket> sockets;
+static Events::ModuleEventProvider* aclevprov;
+static Events::ModuleEventProvider* reqevprov;
+static http_parser_settings parser_settings;
+
+/** A socket used for HTTP transport
+ */
+class HttpServerSocket : public BufferedSocket, public Timer, public insp::intrusive_list_node<HttpServerSocket>
+{
+ private:
+	friend class ModuleHttpServer;
+
+	http_parser parser;
+	http_parser_url url;
+	std::string ip;
+	std::string uri;
+	HTTPHeaders headers;
+	std::string body;
+	size_t total_buffers;
+	int status_code;
+
+	/** True if this object is in the cull list
+	 */
+	bool waitingcull;
+	bool messagecomplete;
+
+	bool Tick(time_t currtime) CXX11_OVERRIDE
+	{
+		if (!messagecomplete)
+		{
+			ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "HTTP socket %d timed out", GetFd());
+			Close();
+			return false;
+		}
+
+		return true;
+	}
+
+	template<int (HttpServerSocket::*f)()>
+	static int Callback(http_parser* p)
+	{
+		HttpServerSocket* sock = static_cast<HttpServerSocket*>(p->data);
+		return (sock->*f)();
+	}
+
+	template<int (HttpServerSocket::*f)(const char*, size_t)>
+	static int DataCallback(http_parser* p, const char* buf, size_t len)
+	{
+		HttpServerSocket* sock = static_cast<HttpServerSocket*>(p->data);
+		return (sock->*f)(buf, len);
+	}
+
+	static void ConfigureParser()
+	{
+		http_parser_settings_init(&parser_settings);
+		parser_settings.on_message_begin = Callback<&HttpServerSocket::OnMessageBegin>;
+		parser_settings.on_url = DataCallback<&HttpServerSocket::OnUrl>;
+		parser_settings.on_header_field = DataCallback<&HttpServerSocket::OnHeaderField>;
+		parser_settings.on_body = DataCallback<&HttpServerSocket::OnBody>;
+		parser_settings.on_message_complete = Callback<&HttpServerSocket::OnMessageComplete>;
+	}
+
+	int OnMessageBegin()
+	{
+		uri.clear();
+		header_state = HEADER_NONE;
+		body.clear();
+		total_buffers = 0;
+		return 0;
+	}
+
+	bool AcceptData(size_t len)
+	{
+		total_buffers += len;
+		return total_buffers < 8192;
+	}
+
+	int OnUrl(const char* buf, size_t len)
+	{
+		if (!AcceptData(len))
+		{
+			status_code = HTTP_STATUS_URI_TOO_LONG;
+			return -1;
+		}
+		uri.append(buf, len);
+		return 0;
+	}
+
+	enum { HEADER_NONE, HEADER_FIELD, HEADER_VALUE } header_state;
+	std::string header_field;
+	std::string header_value;
+
+	void OnHeaderComplete()
+	{
+		headers.SetHeader(header_field, header_value);
+		header_field.clear();
+		header_value.clear();
+	}
+
+	int OnHeaderField(const char* buf, size_t len)
+	{
+		if (header_state == HEADER_VALUE)
+			OnHeaderComplete();
+		header_state = HEADER_FIELD;
+		if (!AcceptData(len))
+		{
+			status_code = HTTP_STATUS_REQUEST_HEADER_FIELDS_TOO_LARGE;
+			return -1;
+		}
+		header_field.append(buf, len);
+		return 0;
+	}
+
+	int OnHeaderValue(const char* buf, size_t len)
+	{
+		header_state = HEADER_VALUE;
+		if (!AcceptData(len))
+		{
+			status_code = HTTP_STATUS_REQUEST_HEADER_FIELDS_TOO_LARGE;
+			return -1;
+		}
+		header_value.append(buf, len);
+		return 0;
+	}
+
+	int OnHeadersComplete()
+	{
+		if (header_state != HEADER_NONE)
+			OnHeaderComplete();
+		return 0;
+	}
+
+	int OnBody(const char* buf, size_t len)
+	{
+		if (!AcceptData(len))
+		{
+			status_code = HTTP_STATUS_PAYLOAD_TOO_LARGE;
+			return -1;
+		}
+		body.append(buf, len);
+		return 0;
+	}
+
+	int OnMessageComplete()
+	{
+		messagecomplete = true;
+		ServeData();
+		return 0;
+	}
+
+ public:
+	HttpServerSocket(int newfd, const std::string& IP, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server, unsigned int timeoutsec)
+		: BufferedSocket(newfd)
+		, Timer(timeoutsec)
+		, ip(IP)
+		, status_code(0)
+		, waitingcull(false)
+		, messagecomplete(false)
+	{
+		if ((!via->iohookprovs.empty()) && (via->iohookprovs.back()))
+		{
+			via->iohookprovs.back()->OnAccept(this, client, server);
+			// IOHook may have errored
+			if (!getError().empty())
+			{
+				ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "HTTP socket %d encountered a hook error: %s",
+					GetFd(), getError().c_str());
+				Close();
+				return;
+			}
+		}
+
+		parser.data = this;
+		http_parser_init(&parser, HTTP_REQUEST);
+		ServerInstance->Timers.AddTimer(this);
+	}
+
+	~HttpServerSocket()
+	{
+		sockets.erase(this);
+	}
+
+	void Close() CXX11_OVERRIDE
+	{
+		if (waitingcull || !HasFd())
+			return;
+
+		waitingcull = true;
+		BufferedSocket::Close();
+		ServerInstance->GlobalCulls.AddItem(this);
+	}
+
+	void OnError(BufferedSocketError err) CXX11_OVERRIDE
+	{
+		ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "HTTP socket %d encountered an error: %d - %s",
+			GetFd(), err, getError().c_str());
+		Close();
+	}
+
+	void SendHTTPError(unsigned int response, const char* errstr = NULL)
+	{
+		if (!errstr)
+			errstr = http_status_str((http_status)response);
+
+		ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Sending HTTP error %u: %s", response, errstr);
+		static HTTPHeaders empty;
+		std::string data = InspIRCd::Format(
+			"<html><head></head><body style='font-family: sans-serif; text-align: center'>"
+			"<h1 style='font-size: 48pt'>Error %u</h1><h2 style='font-size: 24pt'>%s</h2><hr>"
+			"<small>Powered by <a href='https://www.inspircd.org'>InspIRCd</a></small></body></html>",
+			response, errstr);
+
+		Page(data, response, &empty);
+	}
+
+	void SendHeaders(unsigned long size, unsigned int response, HTTPHeaders &rheaders)
+	{
+		WriteData(InspIRCd::Format("HTTP/%u.%u %u %s\r\n", parser.http_major ? parser.http_major : 1, parser.http_major ? parser.http_minor : 1, response, http_status_str((http_status)response)));
+
+		rheaders.CreateHeader("Date", InspIRCd::TimeString(ServerInstance->Time(), "%a, %d %b %Y %H:%M:%S GMT", true));
+		rheaders.CreateHeader("Server", INSPIRCD_BRANCH);
+		rheaders.SetHeader("Content-Length", ConvToStr(size));
+
+		if (size)
+			rheaders.CreateHeader("Content-Type", "text/html");
+		else
+			rheaders.RemoveHeader("Content-Type");
+
+		/* Supporting Connection: keep-alive causes a whole world of hurt synchronizing timeouts,
+		 * so remove it, its not essential for what we need.
+		 */
+		rheaders.SetHeader("Connection", "Close");
+
+		WriteData(rheaders.GetFormattedHeaders());
+		WriteData("\r\n");
+	}
+
+	void OnDataReady() CXX11_OVERRIDE
+	{
+		if (parser.upgrade || HTTP_PARSER_ERRNO(&parser))
+			return;
+		http_parser_execute(&parser, &parser_settings, recvq.data(), recvq.size());
+		if (parser.upgrade)
+			SendHTTPError(status_code ? status_code : 400);
+		else if (HTTP_PARSER_ERRNO(&parser))
+			SendHTTPError(status_code ? status_code : 400, http_errno_description((http_errno)parser.http_errno));
+	}
+
+	void ServeData()
+	{
+		ModResult MOD_RESULT;
+		std::string method = http_method_str(static_cast<http_method>(parser.method));
+		HTTPRequestURI parsed;
+		ParseURI(uri, parsed);
+		HTTPRequest acl(method, parsed, &headers, this, ip, body);
+		FIRST_MOD_RESULT_CUSTOM(*aclevprov, HTTPACLEventListener, OnHTTPACLCheck, MOD_RESULT, (acl));
+		if (MOD_RESULT != MOD_RES_DENY)
+		{
+			HTTPRequest request(method, parsed, &headers, this, ip, body);
+			FIRST_MOD_RESULT_CUSTOM(*reqevprov, HTTPRequestEventListener, OnHTTPRequest, MOD_RESULT, (request));
+			if (MOD_RESULT == MOD_RES_PASSTHRU)
+			{
+				SendHTTPError(404);
+			}
+		}
+	}
+
+	void Page(const std::string& s, unsigned int response, HTTPHeaders* hheaders)
+	{
+		SendHeaders(s.length(), response, *hheaders);
+		WriteData(s);
+		BufferedSocket::Close(true);
+	}
+
+	void Page(std::stringstream* n, unsigned int response, HTTPHeaders* hheaders)
+	{
+		Page(n->str(), response, hheaders);
+	}
+
+	bool ParseURI(const std::string& uristr, HTTPRequestURI& out)
+	{
+		http_parser_url_init(&url);
+		if (http_parser_parse_url(uristr.c_str(), uristr.size(), 0, &url) != 0)
+			return false;
+
+		if (url.field_set & (1 << UF_PATH))
+		{
+			// Normalise the path.
+			std::vector<std::string> pathsegments;
+			irc::sepstream pathstream(uri.substr(url.field_data[UF_PATH].off, url.field_data[UF_PATH].len), '/');
+			for (std::string pathsegment; pathstream.GetToken(pathsegment); )
+			{
+				if (pathsegment == ".")
+				{
+					// Stay at the current level.
+					continue;
+				}
+
+				if (pathsegment == "..")
+				{
+					// Traverse up to the previous level.
+					if (!pathsegments.empty())
+						pathsegments.pop_back();
+					continue;
+				}
+
+				pathsegments.push_back(pathsegment);
+			}
+
+			out.path.reserve(url.field_data[UF_PATH].len);
+			out.path.append("/").append(stdalgo::string::join(pathsegments, '/'));
+		}
+
+		if (url.field_set & (1 << UF_FRAGMENT))
+			out.fragment = uri.substr(url.field_data[UF_FRAGMENT].off, url.field_data[UF_FRAGMENT].len);
+
+		std::string param_str;
+		if (url.field_set & (1 << UF_QUERY))
+			param_str = uri.substr(url.field_data[UF_QUERY].off, url.field_data[UF_QUERY].len);
+
+		irc::sepstream param_stream(param_str, '&');
+		std::string token;
+		std::string::size_type eq_pos;
+		while (param_stream.GetToken(token))
+		{
+			eq_pos = token.find('=');
+			if (eq_pos == std::string::npos)
+			{
+				out.query_params.insert(std::make_pair(token, ""));
+			}
+			else
+			{
+				out.query_params.insert(std::make_pair(token.substr(0, eq_pos), token.substr(eq_pos + 1)));
+			}
+		}
+		return true;
+	}
+};
+
+class HTTPdAPIImpl : public HTTPdAPIBase
+{
+ public:
+	HTTPdAPIImpl(Module* parent)
+		: HTTPdAPIBase(parent)
+	{
+	}
+
+	void SendResponse(HTTPDocumentResponse& resp) CXX11_OVERRIDE
+	{
+		resp.src.sock->Page(resp.document, resp.responsecode, &resp.headers);
+	}
+};
+
+class ModuleHttpServer : public Module
+{
+	HTTPdAPIImpl APIImpl;
+	unsigned int timeoutsec;
+	Events::ModuleEventProvider acleventprov;
+	Events::ModuleEventProvider reqeventprov;
+
+ public:
+	ModuleHttpServer()
+		: APIImpl(this)
+		, acleventprov(this, "event/http-acl")
+		, reqeventprov(this, "event/http-request")
+	{
+		aclevprov = &acleventprov;
+		reqevprov = &reqeventprov;
+		HttpServerSocket::ConfigureParser();
+	}
+
+	void init() CXX11_OVERRIDE
+	{
+		HttpModule = this;
+	}
+
+	void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
+	{
+		ConfigTag* tag = ServerInstance->Config->ConfValue("httpd");
+		timeoutsec = tag->getDuration("timeout", 10, 1);
+	}
+
+	ModResult OnAcceptConnection(int nfd, ListenSocket* from, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) CXX11_OVERRIDE
+	{
+		if (!stdalgo::string::equalsci(from->bind_tag->getString("type"), "httpd"))
+			return MOD_RES_PASSTHRU;
+
+		sockets.push_front(new HttpServerSocket(nfd, client->addr(), from, client, server, timeoutsec));
+		return MOD_RES_ALLOW;
+	}
+
+	void OnUnloadModule(Module* mod) CXX11_OVERRIDE
+	{
+		for (insp::intrusive_list<HttpServerSocket>::const_iterator i = sockets.begin(); i != sockets.end(); )
+		{
+			HttpServerSocket* sock = *i;
+			++i;
+			if (sock->GetModHook(mod))
+			{
+				sock->cull();
+				delete sock;
+			}
+		}
+	}
+
+	CullResult cull() CXX11_OVERRIDE
+	{
+		for (insp::intrusive_list<HttpServerSocket>::const_iterator i = sockets.begin(); i != sockets.end(); ++i)
+		{
+			HttpServerSocket* sock = *i;
+			sock->Close();
+		}
+		return Module::cull();
+	}
+
+	Version GetVersion() CXX11_OVERRIDE
+	{
+		return Version("Allows the server administrator to serve various useful resources over HTTP.", VF_VENDOR);
+	}
+};
+
+MODULE_INIT(ModuleHttpServer)