2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
6 * Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
7 * Copyright (C) 2006-2008 Craig Edwards <craigedwards@brainbox.cc>
8 * Copyright (C) 2007 John Brooks <john.brooks@dereferenced.net>
9 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
11 * This file is part of InspIRCd. InspIRCd is free software: you can
12 * redistribute it and/or modify it under the terms of the GNU General Public
13 * License as published by the Free Software Foundation, version 2.
15 * This program is distributed in the hope that it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
20 * You should have received a copy of the GNU General Public License
21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include "modules/httpd.h"
29 class ModuleHttpServer;
31 static ModuleHttpServer* HttpModule;
33 static std::set<HttpServerSocket*> sockets;
35 /** HTTP socket states
39 HTTP_SERVE_WAIT_REQUEST = 0, /* Waiting for a full request */
40 HTTP_SERVE_RECV_POSTDATA = 1, /* Waiting to finish recieving POST data */
41 HTTP_SERVE_SEND_DATA = 2 /* Sending response */
44 /** A socket used for HTTP transport
46 class HttpServerSocket : public BufferedSocket
48 HttpState InternalState;
52 std::string reqbuffer;
54 unsigned int postsize;
55 std::string request_type;
57 std::string http_version;
60 const time_t createtime;
62 HttpServerSocket(int newfd, const std::string& IP, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
63 : BufferedSocket(newfd), ip(IP), postsize(0)
64 , createtime(ServerInstance->Time())
66 InternalState = HTTP_SERVE_WAIT_REQUEST;
69 via->iohookprov->OnAccept(this, client, server);
77 void OnError(BufferedSocketError) CXX11_OVERRIDE
79 ServerInstance->GlobalCulls.AddItem(this);
82 std::string Response(int response)
89 return "SWITCHING PROTOCOLS";
97 return "NON-AUTHORITATIVE INFORMATION";
101 return "RESET CONTENT";
103 return "PARTIAL CONTENT";
105 return "MULTIPLE CHOICES";
107 return "MOVED PERMANENTLY";
113 return "NOT MODIFIED";
117 return "TEMPORARY REDIRECT";
119 return "BAD REQUEST";
121 return "UNAUTHORIZED";
123 return "PAYMENT REQUIRED";
129 return "METHOD NOT ALLOWED";
131 return "NOT ACCEPTABLE";
133 return "PROXY AUTHENTICATION REQUIRED";
135 return "REQUEST TIMEOUT";
141 return "LENGTH REQUIRED";
143 return "PRECONDITION FAILED";
145 return "REQUEST ENTITY TOO LARGE";
147 return "REQUEST-URI TOO LONG";
149 return "UNSUPPORTED MEDIA TYPE";
151 return "REQUESTED RANGE NOT SATISFIABLE";
153 return "EXPECTATION FAILED";
155 return "INTERNAL SERVER ERROR";
157 return "NOT IMPLEMENTED";
159 return "BAD GATEWAY";
161 return "SERVICE UNAVAILABLE";
163 return "GATEWAY TIMEOUT";
165 return "HTTP VERSION NOT SUPPORTED";
173 void SendHTTPError(int response)
176 std::string data = "<html><head></head><body>Server error "+ConvToStr(response)+": "+Response(response)+"<br>"+
177 "<small>Powered by <a href='http://www.inspircd.org'>InspIRCd</a></small></body></html>";
179 SendHeaders(data.length(), response, empty);
183 void SendHeaders(unsigned long size, int response, HTTPHeaders &rheaders)
186 WriteData(http_version + " "+ConvToStr(response)+" "+Response(response)+"\r\n");
188 time_t local = ServerInstance->Time();
189 struct tm *timeinfo = gmtime(&local);
190 char *date = asctime(timeinfo);
191 date[strlen(date) - 1] = '\0';
192 rheaders.CreateHeader("Date", date);
194 rheaders.CreateHeader("Server", BRANCH);
195 rheaders.SetHeader("Content-Length", ConvToStr(size));
198 rheaders.CreateHeader("Content-Type", "text/html");
200 rheaders.RemoveHeader("Content-Type");
202 /* Supporting Connection: keep-alive causes a whole world of hurt syncronizing timeouts,
203 * so remove it, its not essential for what we need.
205 rheaders.SetHeader("Connection", "Close");
207 WriteData(rheaders.GetFormattedHeaders());
213 if (InternalState == HTTP_SERVE_RECV_POSTDATA)
215 postdata.append(recvq);
216 if (postdata.length() >= postsize)
221 reqbuffer.append(recvq);
223 if (reqbuffer.length() >= 8192)
225 ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "m_httpd dropped connection due to an oversized request buffer");
230 if (InternalState == HTTP_SERVE_WAIT_REQUEST)
231 CheckRequestBuffer();
235 void CheckRequestBuffer()
237 std::string::size_type reqend = reqbuffer.find("\r\n\r\n");
238 if (reqend == std::string::npos)
241 // We have the headers; parse them all
242 std::string::size_type hbegin = 0, hend;
243 while ((hend = reqbuffer.find("\r\n", hbegin)) != std::string::npos)
248 if (request_type.empty())
250 std::istringstream cheader(std::string(reqbuffer, hbegin, hend - hbegin));
251 cheader >> request_type;
253 cheader >> http_version;
255 if (request_type.empty() || uri.empty() || http_version.empty())
265 std::string cheader = reqbuffer.substr(hbegin, hend - hbegin);
267 std::string::size_type fieldsep = cheader.find(':');
268 if ((fieldsep == std::string::npos) || (fieldsep == 0) || (fieldsep == cheader.length() - 1))
274 headers.SetHeader(cheader.substr(0, fieldsep), cheader.substr(fieldsep + 2));
279 reqbuffer.erase(0, reqend + 4);
281 std::transform(request_type.begin(), request_type.end(), request_type.begin(), ::toupper);
282 std::transform(http_version.begin(), http_version.end(), http_version.begin(), ::toupper);
284 if ((http_version != "HTTP/1.1") && (http_version != "HTTP/1.0"))
290 if (headers.IsSet("Content-Length") && (postsize = ConvToInt(headers.GetHeader("Content-Length"))) > 0)
292 InternalState = HTTP_SERVE_RECV_POSTDATA;
294 if (reqbuffer.length() >= postsize)
296 postdata = reqbuffer.substr(0, postsize);
297 reqbuffer.erase(0, postsize);
299 else if (!reqbuffer.empty())
301 postdata = reqbuffer;
305 if (postdata.length() >= postsize)
316 InternalState = HTTP_SERVE_SEND_DATA;
319 HTTPRequest acl((Module*)HttpModule, "httpd_acl", request_type, uri, &headers, this, ip, postdata);
323 HTTPRequest url((Module*)HttpModule, "httpd_url", request_type, uri, &headers, this, ip, postdata);
332 void Page(std::stringstream* n, int response, HTTPHeaders *hheaders)
334 SendHeaders(n->str().length(), response, *hheaders);
339 class HTTPdAPIImpl : public HTTPdAPIBase
342 HTTPdAPIImpl(Module* parent)
343 : HTTPdAPIBase(parent)
347 void SendResponse(HTTPDocumentResponse& resp) CXX11_OVERRIDE
350 resp.src.sock->Page(resp.document, resp.responsecode, &resp.headers);
354 class ModuleHttpServer : public Module
356 std::vector<HttpServerSocket *> httpsocks;
357 HTTPdAPIImpl APIImpl;
358 unsigned int timeoutsec;
366 void init() CXX11_OVERRIDE
371 void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
373 ConfigTag* tag = ServerInstance->Config->ConfValue("httpd");
374 timeoutsec = tag->getInt("timeout");
377 ModResult OnAcceptConnection(int nfd, ListenSocket* from, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) CXX11_OVERRIDE
379 if (from->bind_tag->getString("type") != "httpd")
380 return MOD_RES_PASSTHRU;
382 std::string incomingip;
383 irc::sockets::satoap(*client, incomingip, port);
384 sockets.insert(new HttpServerSocket(nfd, incomingip, from, client, server));
385 return MOD_RES_ALLOW;
388 void OnBackgroundTimer(time_t curtime) CXX11_OVERRIDE
393 time_t oldest_allowed = curtime - timeoutsec;
394 for (std::set<HttpServerSocket*>::const_iterator i = sockets.begin(); i != sockets.end(); )
396 HttpServerSocket* sock = *i;
398 if (sock->createtime < oldest_allowed)
406 CullResult cull() CXX11_OVERRIDE
408 std::set<HttpServerSocket*> local;
410 for (std::set<HttpServerSocket*>::const_iterator i = local.begin(); i != local.end(); ++i)
412 HttpServerSocket* sock = *i;
416 return Module::cull();
419 Version GetVersion() CXX11_OVERRIDE
421 return Version("Provides HTTP serving facilities to modules", VF_VENDOR);
425 MODULE_INIT(ModuleHttpServer)