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578 lines
16 KiB
578 lines
16 KiB
/*
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Copyright (C) 2000,2001 Dawit Alemayehu <adawit@kde.org>
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Copyright (C) 2000,2001 Waldo Bastian <bastian@kde.org>
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Copyright (C) 2000,2001 George Staikos <staikos@kde.org>
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Copyright (C) 2001,2002 Hamish Rodda <rodda@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef HTTP_H_
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#define HTTP_H_
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <string.h>
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#include <stdio.h>
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#include <time.h>
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#include <tqptrlist.h>
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#include <tqstrlist.h>
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#include <tqstringlist.h>
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#include <kurl.h>
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#include "tdeio/tcpslavebase.h"
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#include "tdeio/http.h"
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class DCOPClient;
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class TQDomElement;
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class TQDomNodeList;
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namespace TDEIO {
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class AuthInfo;
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}
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class HTTPProtocol : public TQObject, public TDEIO::TCPSlaveBase
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{
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TQ_OBJECT
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public:
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HTTPProtocol( const TQCString &protocol, const TQCString &pool,
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const TQCString &app );
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virtual ~HTTPProtocol();
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/** HTTP version **/
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enum HTTP_REV {HTTP_None, HTTP_Unknown, HTTP_10, HTTP_11, SHOUTCAST};
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/** Authorization method used **/
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enum HTTP_AUTH {AUTH_None, AUTH_Basic, AUTH_NTLM, AUTH_Digest, AUTH_Negotiate};
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/** HTTP / DAV method **/
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// Removed to interfaces/tdeio/http.h
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//enum HTTP_METHOD {HTTP_GET, HTTP_PUT, HTTP_POST, HTTP_HEAD, HTTP_DELETE,
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// HTTP_OPTIONS, DAV_PROPFIND, DAV_PROPPATCH, DAV_MKCOL,
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// DAV_COPY, DAV_MOVE, DAV_LOCK, DAV_UNLOCK, DAV_SEARCH };
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/** State of the current Connection **/
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struct HTTPState
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{
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HTTPState ()
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{
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port = 0;
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doProxy = false;
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}
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TQString hostname;
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TQString encoded_hostname;
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short unsigned int port;
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TQString user;
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TQString passwd;
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bool doProxy;
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};
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/** DAV-specific request elements for the current connection **/
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struct DAVRequest
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{
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DAVRequest ()
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{
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overwrite = false;
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depth = 0;
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}
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TQString desturl;
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bool overwrite;
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int depth;
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};
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/** The request for the current connection **/
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struct HTTPRequest
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{
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HTTPRequest ()
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{
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port = 0;
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method = TDEIO::HTTP_UNKNOWN;
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offset = 0;
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doProxy = false;
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allowCompressedPage = false;
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disablePassDlg = false;
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bNoAuth = false;
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bUseCache = false;
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bCachedRead = false;
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bCachedWrite = false;
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fcache = 0;
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bMustRevalidate = false;
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cacheExpireDateOffset = 0;
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bErrorPage = false;
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bUseCookiejar = false;
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expireDate = 0;
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creationDate = 0;
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}
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TQString hostname;
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TQString encoded_hostname;
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short unsigned int port;
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TQString user;
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TQString passwd;
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TQString path;
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TQString query;
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TDEIO::HTTP_METHOD method;
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TDEIO::CacheControl cache;
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TDEIO::filesize_t offset;
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bool doProxy;
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KURL url;
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TQString window; // Window Id this request is related to.
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TQString referrer;
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TQString charsets;
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TQString languages;
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bool allowCompressedPage;
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bool disablePassDlg;
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TQString userAgent;
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TQString id;
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DAVRequest davData;
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bool bNoAuth; // Do not authenticate
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// Cache related
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TQString cef; // Cache Entry File belonging to this URL.
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bool bUseCache; // Whether the cache is active
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bool bCachedRead; // Whether the file is to be read from m_fcache.
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bool bCachedWrite; // Whether the file is to be written to m_fcache.
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FILE* fcache; // File stream of a cache entry
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TQString etag; // ETag header.
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TQString lastModified; // Last modified.
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bool bMustRevalidate; // Cache entry is expired.
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long cacheExpireDateOffset; // Position in the cache entry where the
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// 16 byte expire date is stored.
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time_t expireDate; // Date when the cache entry will expire
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time_t creationDate; // Date when the cache entry was created
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TQString strCharset; // Charset
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// Indicates whether an error-page or error-msg should is preferred.
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bool bErrorPage;
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// Cookie flags
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bool bUseCookiejar;
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enum { CookiesAuto, CookiesManual, CookiesNone } cookieMode;
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};
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struct DigestAuthInfo
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{
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TQCString nc;
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TQCString qop;
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TQCString realm;
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TQCString nonce;
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TQCString method;
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TQCString cnonce;
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TQCString username;
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TQCString password;
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TQStrList digestURI;
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TQCString algorithm;
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TQCString entityBody;
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};
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//---------------------- Re-implemented methods ----------------
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virtual void setHost(const TQString& host, int port, const TQString& user,
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const TQString& pass);
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virtual void slave_status();
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virtual void get( const KURL& url );
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virtual void put( const KURL& url, int permissions, bool overwrite,
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bool resume );
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//----------------- Re-implemented methods for WebDAV -----------
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virtual void listDir( const KURL& url );
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virtual void mkdir( const KURL& url, int permissions );
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virtual void rename( const KURL& src, const KURL& dest, bool overwrite );
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virtual void copy( const KURL& src, const KURL& dest, int permissions, bool overwrite );
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virtual void del( const KURL& url, bool isfile );
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// ask the host whether it supports WebDAV & cache this info
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bool davHostOk();
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// send generic DAV request
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void davGeneric( const KURL& url, TDEIO::HTTP_METHOD method );
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// Send requests to lock and unlock resources
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void davLock( const KURL& url, const TQString& scope,
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const TQString& type, const TQString& owner );
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void davUnlock( const KURL& url );
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// Calls httpClose() and finished()
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void davFinished();
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// Handle error conditions
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TQString davError( int code = -1, TQString url = TQString::null );
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//---------------------------- End WebDAV -----------------------
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/**
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* Special commands supported by this slave :
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* 1 - HTTP POST
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* 2 - Cache has been updated
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* 3 - SSL Certificate Cache has been updated
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* 4 - HTTP multi get
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* 5 - DAV LOCK (see
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* 6 - DAV UNLOCK README.webdav)
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*/
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virtual void special( const TQByteArray &data );
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virtual void mimetype( const KURL& url);
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virtual void stat( const KURL& url );
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virtual void reparseConfiguration();
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virtual void closeConnection(); // Forced close of connection
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void post( const KURL& url );
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void multiGet(const TQByteArray &data);
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bool checkRequestURL( const KURL& );
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void cacheUpdate( const KURL &url, bool nocache, time_t expireDate);
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void httpError(); // Generate error message based on response code
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bool isOffline(const KURL &url); // Check network status
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protected slots:
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void slotData(const TQByteArray &);
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void error( int _errid, const TQString &_text );
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protected:
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int readChunked(); // Read a chunk
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int readLimited(); // Read maximum m_iSize bytes.
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int readUnlimited(); // Read as much as possible.
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/**
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* A "smart" wrapper around write that will use SSL_write or
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* write(2) depending on whether you've got an SSL connection or not.
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* The only shortcomming is that it uses the "global" file handles and
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* soforth. So you can't really use this on individual files/sockets.
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*/
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ssize_t write(const void *buf, size_t nbytes);
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/**
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* Another "smart" wrapper, this time around read that will
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* use SSL_read or read(2) depending on whether you've got an
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* SSL connection or not.
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*/
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ssize_t read (void *b, size_t nbytes);
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char *gets (char *str, int size);
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void setRewindMarker();
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void rewind();
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/**
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* Add an encoding on to the appropriate stack this
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* is nececesary because transfer encodings and
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* content encodings must be handled separately.
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*/
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void addEncoding(TQString, TQStringList &);
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void configAuth( char *, bool );
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bool httpOpen(); // Open transfer
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void httpClose(bool keepAlive); // Close transfer
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bool httpOpenConnection(); // Open connection
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void httpCloseConnection(); // Close connection
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void httpCheckConnection(); // Check whether to keep connection.
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void forwardHttpResponseHeader();
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bool readHeader();
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bool sendBody();
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// where dataInternal == true, the content is to be made available
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// to an internal function.
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bool readBody( bool dataInternal = false );
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/**
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* Performs a WebDAV stat or list
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*/
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void davSetRequest( const TQCString& requestXML );
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void davStatList( const KURL& url, bool stat = true );
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void davParsePropstats( const TQDomNodeList& propstats, TDEIO::UDSEntry& entry );
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void davParseActiveLocks( const TQDomNodeList& activeLocks,
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uint& lockCount );
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/**
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* Parses a date & time string
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*/
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long parseDateTime( const TQString& input, const TQString& type );
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/**
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* Returns the error code from a "HTTP/1.1 code Code Name" string
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*/
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int codeFromResponse( const TQString& response );
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/**
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* Extracts locks from metadata
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* Returns the appropriate If: header
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*/
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TQString davProcessLocks();
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/**
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* Send a cookie to the cookiejar
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*/
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void addCookies( const TQString &url, const TQCString &cookieHeader);
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/**
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* Look for cookies in the cookiejar
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*/
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TQString findCookies( const TQString &url);
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/**
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* Do a cache lookup for the current url. (m_state.url)
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*
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* @param readWrite If true, file is opened read/write.
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* If false, file is opened read-only.
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*
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* @return a file stream open for reading and at the start of
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* the header section when the Cache entry exists and is valid.
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* 0 if no cache entry could be found, or if the entry is not
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* valid (any more).
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*/
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FILE *checkCacheEntry(bool readWrite = false);
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/**
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* Create a cache entry for the current url. (m_state.url)
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*
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* Set the contents type of the cache entry to 'mimetype'.
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*/
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void createCacheEntry(const TQString &mimetype, time_t expireDate);
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/**
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* Write data to cache.
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*
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* Write 'nbytes' from 'buffer' to the Cache Entry File
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*/
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void writeCacheEntry( const char *buffer, int nbytes);
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/**
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* Close cache entry
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*/
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void closeCacheEntry();
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/**
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* Update expire time of current cache entry.
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*/
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void updateExpireDate(time_t expireDate, bool updateCreationDate=false);
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/**
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* Quick check whether the cache needs cleaning.
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*/
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void cleanCache();
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/**
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* Performs a GET HTTP request.
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*/
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// where dataInternal == true, the content is to be made available
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// to an internal function.
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void retrieveContent( bool dataInternal = false );
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/**
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* Performs a HEAD HTTP request.
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*/
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bool retrieveHeader(bool close_connection = true);
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/**
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* Resets any per session settings.
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*/
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void resetSessionSettings();
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/**
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* Resets settings related to parsing a response.
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*/
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void resetResponseSettings();
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/**
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* Resets any per connection settings. These are different from
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* per-session settings in that they must be invalidates every time
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* a request is made, e.g. a retry to re-send the header to the
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* server, as compared to only when a new request arrives.
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*/
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void resetConnectionSettings();
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/**
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* Returns any pre-cached proxy authentication info
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* info in HTTP header format.
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*/
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TQString proxyAuthenticationHeader();
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/**
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* Retrieves authorization info from cache or user.
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*/
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bool getAuthorization();
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/**
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* Saves valid authorization info in the cache daemon.
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*/
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void saveAuthorization();
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/**
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* Creates the entity-header for Basic authentication.
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*/
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TQString createBasicAuth( bool isForProxy = false );
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/**
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* Creates the entity-header for Digest authentication.
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*/
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TQString createDigestAuth( bool isForProxy = false );
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/**
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* Creates the entity-header for NTLM authentication.
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*/
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TQString createNTLMAuth( bool isForProxy = false );
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/**
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* Creates the entity-header for Negotiate authentication.
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*/
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TQString createNegotiateAuth();
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/**
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* create GSS error string
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*/
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TQCString gssError( int major_status, int minor_status );
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/**
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* Calcualtes the message digest response based on RFC 2617.
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*/
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void calculateResponse( DigestAuthInfo &info, TQCString &Response );
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/**
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* Prompts the user for authorization retry.
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*/
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bool retryPrompt();
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/**
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* Creates authorization prompt info.
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*/
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void promptInfo( TDEIO::AuthInfo& info );
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protected:
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HTTPState m_state;
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HTTPRequest m_request;
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TQPtrList<HTTPRequest> m_requestQueue;
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bool m_bBusy; // Busy handling request queue.
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bool m_bEOF;
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bool m_bEOD;
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//--- Settings related to a single response only
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TQStringList m_responseHeader; // All headers
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KURL m_redirectLocation;
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bool m_bRedirect; // Indicates current request is a redirection
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// Processing related
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bool m_bChunked; // Chunked tranfer encoding
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TDEIO::filesize_t m_iSize; // Expected size of message
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TDEIO::filesize_t m_iBytesLeft; // # of bytes left to receive in this message.
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TDEIO::filesize_t m_iContentLeft; // # of content bytes left
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TQByteArray m_bufReceive; // Receive buffer
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bool m_dataInternal; // Data is for internal consumption
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char m_lineBuf[1024];
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char m_rewindBuf[8192];
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size_t m_rewindCount;
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char *m_linePtr;
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size_t m_lineCount;
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char *m_lineBufUnget;
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char *m_linePtrUnget;
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size_t m_lineCountUnget;
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// Mimetype determination
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bool m_cpMimeBuffer;
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TQByteArray m_mimeTypeBuffer;
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// Language/Encoding related
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TQStringList m_qTransferEncodings;
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TQStringList m_qContentEncodings;
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TQString m_sContentMD5;
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TQString m_strMimeType;
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//--- WebDAV
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// Data structure to hold data which will be passed to an internal func.
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TQByteArray m_bufWebDavData;
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TQStringList m_davCapabilities;
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bool m_davHostOk;
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bool m_davHostUnsupported;
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//----------
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// Holds the POST data so it won't get lost on if we
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// happend to get a 401/407 response when submitting,
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// a form.
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TQByteArray m_bufPOST;
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// Cache related
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int m_maxCacheAge; // Maximum age of a cache entry.
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long m_maxCacheSize; // Maximum cache size in Kb.
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TQString m_strCacheDir; // Location of the cache.
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//--- Proxy related members
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bool m_bUseProxy;
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bool m_bNeedTunnel; // Whether we need to make a SSL tunnel
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bool m_bIsTunneled; // Whether we have an active SSL tunnel
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bool m_bProxyAuthValid;
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int m_iProxyPort;
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KURL m_proxyURL;
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TQString m_strProxyRealm;
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// Operation mode
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TQCString m_protocol;
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// Authentication
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TQString m_strRealm;
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TQString m_strAuthorization;
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TQString m_strProxyAuthorization;
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HTTP_AUTH Authentication;
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HTTP_AUTH ProxyAuthentication;
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bool m_bUnauthorized;
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short unsigned int m_iProxyAuthCount;
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short unsigned int m_iWWWAuthCount;
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// First request on a connection
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bool m_bFirstRequest;
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// Persistent connections
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bool m_bKeepAlive;
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int m_keepAliveTimeout; // Timeout in seconds.
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// Persistent proxy connections
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bool m_bPersistentProxyConnection;
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// Indicates whether there was some connection error.
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bool m_bError;
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// Previous and current response codes
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unsigned int m_responseCode;
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unsigned int m_prevResponseCode;
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// Values that determine the remote connection timeouts.
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int m_proxyConnTimeout;
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int m_remoteConnTimeout;
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int m_remoteRespTimeout;
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int m_pid;
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};
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#endif
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