678 lines
16 KiB
C
678 lines
16 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these librararies and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/* $XConsortium: URLStorage.C /main/1 1996/07/29 17:07:01 cde-hp $ */
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// Copyright (c) 1995 James Clark
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// See the file COPYING for copying permission.
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#ifdef __GNUG__
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#pragma implementation
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#endif
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// FIXME This implementation won't work on an EBCDIC machine.
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#include "splib.h"
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#ifdef WINSOCK
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#include <winsock.h>
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#define readsocket(s, p, n) ::recv(s, p, n, 0)
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#define writesocket(s, p, n) ::send(s, p, n, 0)
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#define errnosocket (WSAGetLastError())
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#define SocketMessageArg(n) WinsockMessageArg(n)
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#define SOCKET_EINTR (WSAEINTR)
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#define SP_HAVE_SOCKET
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#else
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#ifdef SP_HAVE_SOCKET
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#ifdef SP_INCLUDE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef SP_INCLUDE_OSFCN_H
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#include <osfcn.h>
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#endif
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typedef int SOCKET;
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#define SOCKET_ERROR (-1)
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#define INVALID_SOCKET (-1)
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#define SOCKET_EINTR (EINTR)
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#define closesocket(s) close(s)
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#define writesocket(fd, p, n) ::write(fd, p, n)
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#define readsocket(s, p, n) ::read(s, p, n)
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#define errnosocket (errno)
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#define SocketMessageArg(n) ErrnoMessageArg(n)
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#include "ErrnoMessageArg.h"
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#endif /* SP_HAVE_SOCKET */
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#endif /* not WINSOCK */
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#include "URLStorage.h"
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#include "URLStorageMessages.h"
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#include "RewindStorageObject.h"
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#include "UnivCharsetDesc.h"
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#include "MessageArg.h"
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#include "MessageBuilder.h"
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#include "macros.h"
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <stddef.h>
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#include <ctype.h>
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#include <stdio.h>
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#ifdef SP_NAMESPACE
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namespace SP_NAMESPACE {
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#endif
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static UnivCharsetDesc::Range range = { 0, 128, 0 };
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static UnivCharsetDesc iso646Charset(&range, 1);
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#ifdef SP_HAVE_SOCKET
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class HttpSocketStorageObject : public RewindStorageObject {
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public:
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HttpSocketStorageObject(SOCKET fd, Boolean mayRewind, const StringC &hostStr);
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~HttpSocketStorageObject();
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Boolean open(const String<char> &path, Messenger &);
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Boolean read(char *buf, size_t bufSize, Messenger &mgr, size_t &nread);
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Boolean seekToStart(Messenger &);
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static SOCKET openHttp(const String<char> &host,
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unsigned short port,
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const StringC &hostStr,
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Messenger &mgr);
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private:
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HttpSocketStorageObject(const HttpSocketStorageObject &); // undefined
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void operator=(const HttpSocketStorageObject &); // undefined
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Boolean readHeader(Messenger &);
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Boolean readLine(Messenger &mgr, String<char> &line, String<char> &leftOver);
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StringC hostStr_;
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String<char> path_;
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Boolean eof_;
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SOCKET fd_;
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};
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#ifdef WINSOCK
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class WinsockMessageArg : public MessageArg {
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public:
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WinsockMessageArg(int n) : n_(n) { }
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MessageArg *copy() const { return new WinsockMessageArg(*this); }
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void append(MessageBuilder &) const;
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private:
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int n_;
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};
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void WinsockMessageArg::append(MessageBuilder &builder) const
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{
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// I can't figure out how to get a string associated
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// with this error number. FormatMessage() doesn't seem
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// to work.
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builder.appendFragment(URLStorageMessages::winsockErrorNumber);
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builder.appendNumber(n_);
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}
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class WinsockIniter {
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public:
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WinsockIniter();
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~WinsockIniter();
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Boolean init(Messenger &mgr);
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private:
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Boolean inited_;
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Boolean initSuccess_;
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};
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static WinsockIniter winsockIniter;
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WinsockIniter::WinsockIniter()
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: inited_(0)
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{
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}
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WinsockIniter::~WinsockIniter()
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{
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if (inited_ && initSuccess_)
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(void)WSACleanup();
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}
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Boolean WinsockIniter::init(Messenger &mgr)
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{
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if (!inited_) {
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inited_ = 1;
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initSuccess_ = 0;
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WORD version = MAKEWORD(1, 1);
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WSADATA wsaData;
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int err = WSAStartup(version, &wsaData);
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if (err)
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mgr.message(URLStorageMessages::winsockInitialize,
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WinsockMessageArg(err));
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else if (LOBYTE(wsaData.wVersion) != 1
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|| HIBYTE(wsaData.wVersion) != 1) {
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mgr.message(URLStorageMessages::winsockVersion);
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WSACleanup();
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}
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else
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initSuccess_ = 1;
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}
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return initSuccess_;
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}
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#endif /* WINSOCK */
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#endif /* SP_HAVE_SOCKET */
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URLStorageManager::URLStorageManager(const char *type)
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: type_(type), IdStorageManager(iso646Charset)
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{
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}
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const char *URLStorageManager::type() const
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{
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return type_;
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}
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Boolean URLStorageManager::guessIsId(const StringC &id,
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const CharsetInfo &charset) const
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{
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if (id.size() < 8)
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return 0;
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size_t i = 0;
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for (const char *s = "http://"; *s; s++, i++)
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if (id[i] != charset.execToDesc(*s)
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&& (!islower(*s) || id[i] != charset.execToDesc(toupper(*s))))
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return 0;
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return 1;
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}
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StorageObject *URLStorageManager::makeStorageObject(const StringC &specId,
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const StringC &baseId,
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Boolean,
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Boolean mayRewind,
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Messenger &mgr,
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StringC &id)
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{
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#ifdef SP_HAVE_SOCKET
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id = specId;
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resolveRelative(baseId, id, 0);
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if (id.size() < 5
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|| (id[0] != 'h' && id[0] != 'H')
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|| (id[1] != 't' && id[1] != 'T')
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|| (id[2] != 't' && id[2] != 'T')
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|| (id[3] != 'p' && id[3] != 'P')
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|| id[4] != ':') {
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mgr.message(URLStorageMessages::onlyHTTP);
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return 0;
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}
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if (id.size() < 7 || id[5] != '/' || id[6] != '/') {
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mgr.message(URLStorageMessages::badRelative,
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StringMessageArg(id));
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return 0;
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}
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size_t i = 7;
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String<char> host;
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while (i < id.size()) {
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if (id[i] == '/')
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break;
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if (id[i] == ':')
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break;
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host += char(id[i]);
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i++;
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}
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if (host.size() == 0) {
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mgr.message(URLStorageMessages::emptyHost,
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StringMessageArg(id));
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return 0;
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}
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unsigned short port;
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if (i < id.size() && id[i] == ':') {
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i++;
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String<char> digits;
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while (i < id.size() && id[i] != '/') {
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digits += char(id[i]);
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i++;
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}
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if (digits.size() == 0) {
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mgr.message(URLStorageMessages::emptyPort,
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StringMessageArg(id));
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return 0;
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}
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digits += '\0';
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char *endptr;
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long n = strtol(digits.data(), &endptr, 10);
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if (endptr != digits.data() + digits.size() - 1
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|| n < 0
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|| n > 65535L) {
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mgr.message(URLStorageMessages::invalidPort,
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StringMessageArg(id));
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return 0;
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}
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port = (unsigned short)n;
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}
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else
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port = 80;
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String<char> path;
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if (i < id.size()) {
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while (i < id.size() && id[i] != '#') {
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path += char(id[i]);
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i++;
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}
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}
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if (path.size() == 0)
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path += '/';
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StringC hostStr;
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for (i = 0; i < host.size(); i++)
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hostStr += host[i];
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host += '\0';
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SOCKET fd = HttpSocketStorageObject::openHttp(host, port, hostStr, mgr);
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if (fd == INVALID_SOCKET)
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return 0;
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HttpSocketStorageObject *p
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= new HttpSocketStorageObject(fd, mayRewind, hostStr);
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if (!p->open(path, mgr)) {
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delete p;
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return 0;
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}
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return p;
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#else /* not SP_HAVE_SOCKET */
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ParentLocationMessenger(mgr).message(URLStorageMessages::notSupported);
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return 0;
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#endif /* not SP_HAVE_SOCKET */
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}
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Boolean URLStorageManager::resolveRelative(const StringC &baseId,
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StringC &id,
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Boolean) const
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{
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static const char schemeChars[] =
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"abcdefghijklmnopqrstuvwxyz"
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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"01234567879"
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"+-.";
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size_t i;
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// If it has a scheme, it is absolute.
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for (i = 0; i < id.size(); i++) {
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if (id[i] == ':') {
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if (i == 0)
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break;
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else
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return 1;
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}
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else if (!strchr(schemeChars, id[i]))
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break;
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}
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for (i = 0; i < id.size(); i++) {
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if (id[i] != '/')
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break;
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}
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size_t slashCount = i;
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if (slashCount > 0) {
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Boolean foundSameSlash = 0;
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size_t sameSlashPos;
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for (size_t j = 0; j < baseId.size(); j++) {
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size_t thisSlashCount = 0;
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for (size_t k = j; k < baseId.size() && baseId[k] == '/'; k++)
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thisSlashCount++;
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if (thisSlashCount == slashCount && !foundSameSlash) {
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foundSameSlash = 1;
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sameSlashPos = j;
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}
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else if (thisSlashCount > slashCount)
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foundSameSlash = 0;
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}
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if (foundSameSlash) {
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StringC tem(baseId.data(), sameSlashPos);
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tem += id;
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tem.swap(id);
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}
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}
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else {
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size_t j;
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for (j = baseId.size(); j > 0; j--)
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if (baseId[j - 1] == '/')
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break;
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if (j > 0) {
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StringC tem(baseId.data(), j);
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tem += id;
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tem.swap(id);
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}
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}
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// FIXME remove xxx/../, and /.
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return 1;
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}
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Boolean URLStorageManager::transformNeutral(StringC &str, Boolean fold,
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Messenger &) const
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{
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if (fold)
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for (size_t i = 0; i < str.size(); i++) {
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Char c = str[i];
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if (c <= (unsigned char)-1)
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str[i] = tolower(str[i]);
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}
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return 1;
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}
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#ifdef SP_HAVE_SOCKET
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SOCKET HttpSocketStorageObject::openHttp(const String<char> &host,
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unsigned short port,
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const StringC &hostStr,
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Messenger &mgr)
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{
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#ifdef WINSOCK
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if (!winsockIniter.init(mgr))
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return INVALID_SOCKET;
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#endif
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struct sockaddr_in sock;
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sock.sin_family = AF_INET;
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sock.sin_port = htons(port);
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if (isdigit((unsigned char)host[0])) {
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unsigned long n = inet_addr(host.data());
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if (n == (unsigned long)-1) {
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ParentLocationMessenger(mgr).message(URLStorageMessages::invalidHostNumber,
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StringMessageArg(hostStr));
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return INVALID_SOCKET;
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}
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sock.sin_addr.s_addr = n;
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}
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else {
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struct hostent *hp = gethostbyname(host.data());
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if (!hp) {
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const MessageType1 *message;
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switch (h_errno) {
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case HOST_NOT_FOUND:
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message = &URLStorageMessages::hostNotFound;
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break;
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case TRY_AGAIN:
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message = &URLStorageMessages::hostTryAgain;
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break;
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case NO_RECOVERY:
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message = &URLStorageMessages::hostNoRecovery;
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break;
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case NO_DATA:
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#ifdef NO_ADDRESS
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#if NO_ADDRESS != NO_DATA
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case NO_ADDRESS:
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#endif
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#endif
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message = &URLStorageMessages::hostNoData;
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break;
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default:
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#ifdef WINSOCK
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ParentLocationMessenger(mgr).message(URLStorageMessages::hostOtherError,
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StringMessageArg(hostStr),
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WinsockMessageArg(h_errno));
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return INVALID_SOCKET;
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#else
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message = &URLStorageMessages::hostUnknownError;
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break;
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#endif
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}
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ParentLocationMessenger(mgr).message(*message,
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StringMessageArg(hostStr));
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return INVALID_SOCKET;
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}
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memcpy(&sock.sin_addr, hp->h_addr, hp->h_length);
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}
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SOCKET fd = socket(PF_INET, SOCK_STREAM, 0);
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if (fd == INVALID_SOCKET) {
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ParentLocationMessenger(mgr).message(URLStorageMessages::cannotCreateSocket,
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SocketMessageArg(errnosocket));
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return INVALID_SOCKET;
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}
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if (connect(fd, (struct sockaddr *)&sock, sizeof(sock)) == SOCKET_ERROR) {
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ParentLocationMessenger(mgr).message(URLStorageMessages::cannotConnect,
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StringMessageArg(hostStr),
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SocketMessageArg(errnosocket));
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(void)closesocket(fd);
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return INVALID_SOCKET;
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}
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return fd;
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}
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HttpSocketStorageObject::HttpSocketStorageObject(SOCKET fd,
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Boolean mayRewind,
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const StringC &hostStr)
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: RewindStorageObject(mayRewind, 0), hostStr_(hostStr), fd_(fd), eof_(0)
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{
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}
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HttpSocketStorageObject::~HttpSocketStorageObject()
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{
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if (fd_ != INVALID_SOCKET)
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(void)closesocket(fd_);
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}
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Boolean HttpSocketStorageObject::open(const String<char> &path, Messenger &mgr)
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{
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path_ = path;
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String<char> request;
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request.append("GET ", 4);
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request += path_;
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request += ' ';
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request.append("HTTP/1.0\r\n\r\n", 12);
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// FIXME check length of write
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if (writesocket(fd_, request.data(), request.size()) == SOCKET_ERROR) {
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ParentLocationMessenger(mgr).message(URLStorageMessages::writeError,
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StringMessageArg(hostStr_),
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SocketMessageArg(errnosocket));
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(void)closesocket(fd_);
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fd_ = INVALID_SOCKET;
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return 0;
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}
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if (!readHeader(mgr)) {
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(void)closesocket(fd_);
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fd_ = INVALID_SOCKET;
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return 0;
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}
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return 1;
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}
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Boolean HttpSocketStorageObject::readHeader(Messenger &mgr)
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{
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String<char> buf;
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String<char> leftOver;
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if (!readLine(mgr, buf, leftOver))
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return 0;
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buf += '\0';
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static const char ver[] = "HTTP/1.0";
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int i;
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for (i = 0; ver[i]; i++)
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if (ver[i] != buf[i])
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break;
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if (ver[i]) {
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if (buf.size() > 0)
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unread(buf.data(), buf.size() - 1);
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return 1;
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}
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const char *ptr = &buf[i];
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while (isspace((unsigned char)*ptr))
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ptr++;
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int val = 0;
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while (isdigit((unsigned char)*ptr)) {
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val = val*10 + *ptr - '0';
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ptr++;
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}
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while (isspace((unsigned char)*ptr))
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ptr++;
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if (val < 200 || val >= 300) {
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StringC reason;
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while (*ptr && *ptr != '\n' && *ptr != '\r') {
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reason += Char(*ptr);
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ptr++;
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}
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StringC pathStr;
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for (size_t i = 0; i < path_.size(); i++)
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pathStr += path_[i];
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ParentLocationMessenger(mgr).message(URLStorageMessages::getFailed,
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StringMessageArg(hostStr_),
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StringMessageArg(pathStr),
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StringMessageArg(reason));
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return 0;
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}
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for (;;) {
|
|
if (!readLine(mgr, buf, leftOver))
|
|
return 0;
|
|
if (buf.size() == 0 || buf[0] == '\r' || buf[0] == '\n')
|
|
break;
|
|
}
|
|
if (leftOver.size())
|
|
unread(leftOver.data(), leftOver.size());
|
|
return 1;
|
|
}
|
|
|
|
// True will be returned for an empty line.
|
|
|
|
Boolean HttpSocketStorageObject::readLine(Messenger &mgr,
|
|
String<char> &line,
|
|
String<char> &leftOver)
|
|
{
|
|
line.resize(0);
|
|
Boolean hadCr = 0;
|
|
Boolean gotLine = 0;
|
|
size_t li;
|
|
for (li = 0; li < leftOver.size(); li++) {
|
|
if (leftOver[li] == '\r') {
|
|
if (hadCr) {
|
|
gotLine = 1;
|
|
break;
|
|
}
|
|
line += '\r';
|
|
hadCr = 1;
|
|
}
|
|
else if (leftOver[li] == '\n') {
|
|
line += '\n';
|
|
li++;
|
|
gotLine = 1;
|
|
break;
|
|
}
|
|
else if (hadCr) {
|
|
gotLine = 1;
|
|
break;
|
|
}
|
|
else
|
|
line += leftOver[li];
|
|
}
|
|
if (gotLine) {
|
|
for (size_t i = li; i < leftOver.size(); i++)
|
|
leftOver[i - li] = leftOver[i];
|
|
leftOver.resize(leftOver.size() - li);
|
|
return 1;
|
|
}
|
|
leftOver.resize(0);
|
|
if (eof_)
|
|
return 1;
|
|
for (;;) {
|
|
char c;
|
|
long n;
|
|
do {
|
|
n = readsocket(fd_, &c, 1);
|
|
} while (n < 0 && errnosocket == SOCKET_EINTR);
|
|
if (n == 0) {
|
|
(void)closesocket(fd_);
|
|
eof_ = 1;
|
|
return 1;
|
|
}
|
|
if (n < 0) {
|
|
ParentLocationMessenger(mgr).message(URLStorageMessages::readError,
|
|
StringMessageArg(hostStr_),
|
|
SocketMessageArg(errnosocket));
|
|
(void)closesocket(fd_);
|
|
fd_ = INVALID_SOCKET;
|
|
return 0;
|
|
}
|
|
switch (c) {
|
|
case '\r':
|
|
if (hadCr) {
|
|
leftOver += c;
|
|
return 1;
|
|
}
|
|
hadCr = 1;
|
|
line += c;
|
|
break;
|
|
case '\n':
|
|
line += c;
|
|
return 1;
|
|
default:
|
|
if (hadCr) {
|
|
leftOver += c;
|
|
return 1;
|
|
}
|
|
line += c;
|
|
break;
|
|
}
|
|
}
|
|
return 0; // not reached
|
|
}
|
|
|
|
Boolean HttpSocketStorageObject::read(char *buf, size_t bufSize, Messenger &mgr,
|
|
size_t &nread)
|
|
{
|
|
if (readSaved(buf, bufSize, nread))
|
|
return 1;
|
|
if (fd_ == INVALID_SOCKET || eof_)
|
|
return 0;
|
|
long n;
|
|
do {
|
|
n = readsocket(fd_, buf, bufSize);
|
|
} while (n < 0 && errnosocket == SOCKET_EINTR);
|
|
if (n > 0) {
|
|
nread = size_t(n);
|
|
saveBytes(buf, nread);
|
|
return 1;
|
|
}
|
|
if (n < 0) {
|
|
ParentLocationMessenger(mgr).message(URLStorageMessages::readError,
|
|
StringMessageArg(hostStr_),
|
|
SocketMessageArg(errnosocket));
|
|
fd_ = INVALID_SOCKET;
|
|
}
|
|
else {
|
|
eof_ = 1;
|
|
if (closesocket(fd_) == SOCKET_ERROR)
|
|
ParentLocationMessenger(mgr).message(URLStorageMessages::closeError,
|
|
StringMessageArg(hostStr_),
|
|
SocketMessageArg(errnosocket));
|
|
fd_ = INVALID_SOCKET;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
Boolean HttpSocketStorageObject::seekToStart(Messenger &)
|
|
{
|
|
CANNOT_HAPPEN();
|
|
return 0;
|
|
}
|
|
|
|
#endif /* SP_HAVE_SOCKET */
|
|
|
|
#ifdef SP_NAMESPACE
|
|
}
|
|
#endif
|