X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_httpd.cpp;h=2b079c6ff9fe19d017d8347332f38d4b0a66fe95;hb=571714e28b26cc59cbc8d27098a5ba981240ee2d;hp=8150a6b5f52f4afab8566ab852b790d219527f21;hpb=e2e165d57331ea5a7805bad5df6938ce701aa261;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_httpd.cpp b/src/modules/m_httpd.cpp index 8150a6b5f..2b079c6ff 100644 --- a/src/modules/m_httpd.cpp +++ b/src/modules/m_httpd.cpp @@ -1,188 +1,433 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon * - * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. - * E-mail: - * - * - * - * Written by Craig Edwards, Craig McLure, and others. - * This program is free but copyrighted software; see - * the file COPYING for details. + * Copyright (C) 2009 Daniel De Graaf + * Copyright (C) 2007-2008 Robin Burchell + * Copyright (C) 2008 Pippijn van Steenhoven + * Copyright (C) 2006-2008 Craig Edwards + * Copyright (C) 2007 John Brooks + * Copyright (C) 2007 Dennis Friis * - * --------------------------------------------------- + * 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 . */ -using namespace std; -#include -#include "users.h" -#include "channels.h" -#include "modules.h" -#include "inspsocket.h" -#include "helperfuncs.h" +#include "inspircd.h" +#include "httpd.h" /* $ModDesc: Provides HTTP serving facilities to modules */ +/* $ModDep: httpd.h */ + +class ModuleHttpServer; -static Server *Srv; -extern time_t TIME; +static ModuleHttpServer* HttpModule; +static bool claimed; +static std::set sockets; +/** HTTP socket states + */ enum HttpState { - HTTP_LISTEN = 0, - HTTP_SERVE_WAIT_REQUEST = 1, - HTTP_SERVE_SEND_DATA = 2 + HTTP_SERVE_WAIT_REQUEST = 0, /* Waiting for a full request */ + HTTP_SERVE_RECV_POSTDATA = 1, /* Waiting to finish recieving POST data */ + HTTP_SERVE_SEND_DATA = 2 /* Sending response */ }; -class HttpSocket : public InspSocket +/** A socket used for HTTP transport + */ +class HttpServerSocket : public BufferedSocket { - FileReader* index; HttpState InternalState; - std::stringstream headers; + std::string ip; + + HTTPHeaders headers; + std::string reqbuffer; + std::string postdata; + unsigned int postsize; + std::string request_type; + std::string uri; + std::string http_version; public: + const time_t createtime; - HttpSocket(std::string host, int port, bool listening, unsigned long maxtime, FileReader* index_page) : InspSocket(host, port, listening, maxtime), index(index_page) + HttpServerSocket(int newfd, const std::string& IP, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) + : BufferedSocket(newfd), ip(IP), postsize(0) + , createtime(ServerInstance->Time()) { - log(DEBUG,"HttpSocket constructor"); - InternalState = HTTP_LISTEN; + InternalState = HTTP_SERVE_WAIT_REQUEST; + + FOREACH_MOD(I_OnHookIO, OnHookIO(this, via)); + if (GetIOHook()) + GetIOHook()->OnStreamSocketAccept(this, client, server); } - HttpSocket(int newfd, char* ip, FileReader* ind) : InspSocket(newfd, ip), index(ind) + ~HttpServerSocket() { - InternalState = HTTP_SERVE_WAIT_REQUEST; + sockets.erase(this); + } + + virtual void OnError(BufferedSocketError) + { + ServerInstance->GlobalCulls.AddItem(this); } - virtual int OnIncomingConnection(int newsock, char* ip) + std::string Response(int response) { - if (InternalState == HTTP_LISTEN) + switch (response) { - HttpSocket* s = new HttpSocket(newsock, ip, index); - Srv->AddSocket(s); + 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 PERMANENTLY"; + 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; + } - return true; } - virtual void OnClose() + void SendHTTPError(int response) { + HTTPHeaders empty; + std::string data = "Server error "+ConvToStr(response)+": "+Response(response)+"
"+ + "Powered by InspIRCd"; + + SendHeaders(data.length(), response, empty); + WriteData(data); } - void SendHeaders() + void SendHeaders(unsigned long size, int response, HTTPHeaders &rheaders) { - struct tm *timeinfo = localtime(&TIME); - this->Write("HTTP/1.1 200 OK\r\nDate: "); - this->Write(asctime(timeinfo)); - this->Write("Server: InspIRCd/m_httpd.so/1.1\r\nContent-Length: "+ConvToStr(index->ContentSize())+ - "\r\nConnection: close\r\nContent-Type: text/html\r\n\r\n"); + + WriteData(http_version + " "+ConvToStr(response)+" "+Response(response)+"\r\n"); + + time_t local = ServerInstance->Time(); + struct tm *timeinfo = gmtime(&local); + char *date = asctime(timeinfo); + date[strlen(date) - 1] = '\0'; + rheaders.CreateHeader("Date", date); + + rheaders.CreateHeader("Server", 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 syncronizing timeouts, + * so remove it, its not essential for what we need. + */ + rheaders.SetHeader("Connection", "Close"); + + WriteData(rheaders.GetFormattedHeaders()); + WriteData("\r\n"); } - virtual bool OnDataReady() + void OnDataReady() { - char* data = this->Read(); - /* Check that the data read is a valid pointer and it has some content */ - if (data && *data) + if (InternalState == HTTP_SERVE_RECV_POSTDATA) { - headers << data; + postdata.append(recvq); + if (postdata.length() >= postsize) + ServeData(); + } + else + { + reqbuffer.append(recvq); + + if (reqbuffer.length() >= 8192) + { + ServerInstance->Logs->Log("m_httpd",DEBUG, "m_httpd dropped connection due to an oversized request buffer"); + reqbuffer.clear(); + SetError("Buffer"); + } + + if (InternalState == HTTP_SERVE_WAIT_REQUEST) + CheckRequestBuffer(); + } + } + + void CheckRequestBuffer() + { + std::string::size_type reqend = reqbuffer.find("\r\n\r\n"); + if (reqend == std::string::npos) + return; + + // We have the headers; parse them all + std::string::size_type hbegin = 0, hend; + while ((hend = reqbuffer.find("\r\n", hbegin)) != std::string::npos) + { + if (hbegin == hend) + break; - if (headers.str().find("\r\n\r\n") != std::string::npos) + if (request_type.empty()) { - /* Headers are complete */ - InternalState = HTTP_SERVE_SEND_DATA; - SendHeaders(); + std::istringstream cheader(std::string(reqbuffer, hbegin, hend - hbegin)); + cheader >> request_type; + cheader >> uri; + cheader >> http_version; - this->Write(index->Contents()); + if (request_type.empty() || uri.empty() || http_version.empty()) + { + SendHTTPError(400); + return; + } - return false; + hbegin = hend + 2; + continue; } - return true; + + std::string cheader = reqbuffer.substr(hbegin, hend - hbegin); + + std::string::size_type fieldsep = cheader.find(':'); + if ((fieldsep == std::string::npos) || (fieldsep == 0) || (fieldsep == cheader.length() - 1)) + { + SendHTTPError(400); + return; + } + + headers.SetHeader(cheader.substr(0, fieldsep), cheader.substr(fieldsep + 2)); + + hbegin = hend + 2; } - else + + reqbuffer.erase(0, reqend + 4); + + 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 ((http_version != "HTTP/1.1") && (http_version != "HTTP/1.0")) { - /* Bastard client closed the socket on us! - * Oh wait, theyre SUPPOSED to do that! - */ - return false; + SendHTTPError(505); + return; } - } -}; - -class ModuleHttp : public Module -{ - int port; - std::string host; - std::string bindip; - std::string indexfile; - FileReader index; + if (headers.IsSet("Content-Length") && (postsize = ConvToInt(headers.GetHeader("Content-Length"))) > 0) + { + InternalState = HTTP_SERVE_RECV_POSTDATA; - HttpSocket* http; + if (reqbuffer.length() >= postsize) + { + postdata = reqbuffer.substr(0, postsize); + reqbuffer.erase(0, postsize); + } + else if (!reqbuffer.empty()) + { + postdata = reqbuffer; + reqbuffer.clear(); + } - public: + if (postdata.length() >= postsize) + ServeData(); - void ReadConfig() - { - ConfigReader c; - this->host = c.ReadValue("http", "host", 0); - this->bindip = c.ReadValue("http", "ip", 0); - this->port = c.ReadInteger("http", "port", 0, true); - this->indexfile = c.ReadValue("http", "index", 0); + return; + } - index.LoadFile(this->indexfile); + ServeData(); } - void CreateListener() + void ServeData() { - http = new HttpSocket(this->bindip, this->port, true, 0, &index); - if ((http) && (http->GetState() == I_LISTENING)) + InternalState = HTTP_SERVE_SEND_DATA; + + claimed = false; + HTTPRequest acl((Module*)HttpModule, "httpd_acl", request_type, uri, &headers, this, ip, postdata); + acl.Send(); + if (!claimed) { - Srv->AddSocket(http); + HTTPRequest url((Module*)HttpModule, "httpd_url", request_type, uri, &headers, this, ip, postdata); + url.Send(); + if (!claimed) + { + SendHTTPError(404); + } } } - ModuleHttp(Server* Me) : Module::Module(Me) + void Page(std::stringstream* n, int response, HTTPHeaders *hheaders) { - Srv = Me; - ReadConfig(); - CreateListener(); + SendHeaders(n->str().length(), response, *hheaders); + WriteData(n->str()); } +}; + +class ModuleHttpServer : public Module +{ + unsigned int timeoutsec; - void Implements(char* List) + public: + + void init() { - List[I_OnEvent] = List[I_OnRequest] = 1; + HttpModule = this; + Implementation eventlist[] = { I_OnAcceptConnection, I_OnBackgroundTimer, I_OnRehash, I_OnUnloadModule }; + ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation)); + OnRehash(NULL); } - virtual ~ModuleHttp() + void OnRehash(User* user) { - Srv->DelSocket(http); + ConfigTag* tag = ServerInstance->Config->ConfValue("httpd"); + timeoutsec = tag->getInt("timeout"); } - virtual Version GetVersion() + void OnRequest(Request& request) { - return Version(1,0,0,0,VF_STATIC|VF_VENDOR); + if (strcmp(request.id, "HTTP-DOC") != 0) + return; + HTTPDocumentResponse& resp = static_cast(request); + claimed = true; + resp.src.sock->Page(resp.document, resp.responsecode, &resp.headers); + } + + ModResult OnAcceptConnection(int nfd, ListenSocket* from, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) + { + if (from->bind_tag->getString("type") != "httpd") + return MOD_RES_PASSTHRU; + int port; + std::string incomingip; + irc::sockets::satoap(*client, incomingip, port); + sockets.insert(new HttpServerSocket(nfd, incomingip, from, client, server)); + return MOD_RES_ALLOW; } -}; + void OnBackgroundTimer(time_t curtime) + { + if (!timeoutsec) + return; -class ModuleHttpFactory : public ModuleFactory -{ - public: - ModuleHttpFactory() + time_t oldest_allowed = curtime - timeoutsec; + for (std::set::const_iterator i = sockets.begin(); i != sockets.end(); ) + { + HttpServerSocket* sock = *i; + ++i; + if (sock->createtime < oldest_allowed) + { + sock->cull(); + delete sock; + } + } + } + + void OnUnloadModule(Module* mod) { + for (std::set::const_iterator i = sockets.begin(); i != sockets.end(); ) + { + HttpServerSocket* sock = *i; + ++i; + if (sock->GetIOHook() == mod) + { + sock->cull(); + delete sock; + } + } } - - ~ModuleHttpFactory() + + CullResult cull() { + std::set local; + local.swap(sockets); + for (std::set::const_iterator i = local.begin(); i != local.end(); ++i) + { + HttpServerSocket* sock = *i; + sock->cull(); + delete sock; + } + return Module::cull(); } - - virtual Module * CreateModule(Server* Me) + + virtual Version GetVersion() { - return new ModuleHttp(Me); + return Version("Provides HTTP serving facilities to modules", VF_VENDOR); } }; - -extern "C" void * init_module( void ) -{ - return new ModuleHttpFactory; -} +MODULE_INIT(ModuleHttpServer)