155 lines
5.7 KiB
C++
155 lines
5.7 KiB
C++
/*
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* Copyright (C) 2002 Cyrus Patel <cyp@fb14.uni-mainz.de>
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* (C) 2007 Apple Inc. All rights reserved.
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*
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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 Lesser General Public
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* License 2.1 as published by the Free Software Foundation.
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*
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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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*
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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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/* ParseFTPList() parses lines from an FTP LIST command.
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**
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** Written July 2002 by Cyrus Patel <cyp@fb14.uni-mainz.de>
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** with acknowledgements to squid, lynx, wget and ftpmirror.
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**
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** Arguments:
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** 'line': line of FTP data connection output. The line is assumed
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** to end at the first '\0' or '\n' or '\r\n'.
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** 'state': a structure used internally to track state between
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** lines. Needs to be bzero()'d at LIST begin.
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** 'result': where ParseFTPList will store the results of the parse
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** if 'line' is not a comment and is not junk.
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**
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** Returns one of the following:
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** 'd' - LIST line is a directory entry ('result' is valid)
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** 'f' - LIST line is a file's entry ('result' is valid)
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** 'l' - LIST line is a symlink's entry ('result' is valid)
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** '?' - LIST line is junk. (cwd, non-file/dir/link, etc)
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** '"' - its not a LIST line (its a "comment")
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**
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** It may be advisable to let the end-user see "comments" (particularly when
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** the listing results in ONLY such lines) because such a listing may be:
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** - an unknown LIST format (NLST or "custom" format for example)
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** - an error msg (EPERM,ENOENT,ENFILE,EMFILE,ENOTDIR,ENOTBLK,EEXDEV etc).
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** - an empty directory and the 'comment' is a "total 0" line or similar.
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** (warning: a "total 0" can also mean the total size is unknown).
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**
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** ParseFTPList() supports all known FTP LISTing formats:
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** - '/bin/ls -l' and all variants (including Hellsoft FTP for NetWare);
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** - EPLF (Easily Parsable List Format);
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** - Windows NT's default "DOS-dirstyle";
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** - OS/2 basic server format LIST format;
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** - VMS (MultiNet, UCX, and CMU) LIST format (including multi-line format);
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** - IBM VM/CMS, VM/ESA LIST format (two known variants);
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** - SuperTCP FTP Server for Win16 LIST format;
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** - NetManage Chameleon (NEWT) for Win16 LIST format;
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** - '/bin/dls' (two known variants, plus multi-line) LIST format;
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** If there are others, then I'd like to hear about them (send me a sample).
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**
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** NLSTings are not supported explicitely because they cannot be machine
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** parsed consistantly: NLSTings do not have unique characteristics - even
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** the assumption that there won't be whitespace on the line does not hold
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** because some nlistings have more than one filename per line and/or
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** may have filenames that have spaces in them. Moreover, distinguishing
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** between an error message and an NLST line would require ParseList() to
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** recognize all the possible strerror() messages in the world.
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*/
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// This was originally Mozilla code, titled ParseFTPList.h
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// Original version of this file can currently be found at: http://mxr.mozilla.org/mozilla1.8/source/netwerk/streamconv/converters/ParseFTPList.h
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#pragma once
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#include <wtf/text/WTFString.h>
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#include <time.h>
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#define SUPPORT_LSL /* Support for /bin/ls -l and dozens of variations therof */
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#define SUPPORT_DLS /* Support for /bin/dls format (very, Very, VERY rare) */
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#define SUPPORT_EPLF /* Support for Extraordinarily Pathetic List Format */
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#define SUPPORT_DOS /* Support for WinNT server in 'site dirstyle' dos */
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#define SUPPORT_VMS /* Support for VMS (all: MultiNet, UCX, CMU-IP) */
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#define SUPPORT_CMS /* Support for IBM VM/CMS,VM/ESA (z/VM and LISTING forms) */
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#define SUPPORT_OS2 /* Support for IBM TCP/IP for OS/2 - FTP Server */
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#define SUPPORT_W16 /* Support for win16 hosts: SuperTCP or NetManage Chameleon */
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namespace WebCore {
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typedef struct tm FTPTime;
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struct ListState {
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ListState()
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: now(0)
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, listStyle(0)
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, parsedOne(false)
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, carryBufferLength(0)
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, numLines(0)
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{
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memset(&nowFTPTime, 0, sizeof(FTPTime));
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}
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double now; /* needed for year determination */
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FTPTime nowFTPTime;
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char listStyle; /* LISTing style */
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bool parsedOne; /* returned anything yet? */
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char carryBuffer[84]; /* for VMS multiline */
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int carryBufferLength; /* length of name in carry_buf */
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int64_t numLines; /* number of lines seen */
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};
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enum FTPEntryType {
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FTPDirectoryEntry,
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FTPFileEntry,
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FTPLinkEntry,
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FTPMiscEntry,
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FTPJunkEntry
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};
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struct ListResult
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{
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ListResult()
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{
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clear();
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}
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void clear()
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{
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valid = false;
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type = FTPJunkEntry;
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filename = nullptr;
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filenameLength = 0;
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linkname = nullptr;
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linknameLength = 0;
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fileSize.truncate(0);
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caseSensitive = false;
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memset(&modifiedTime, 0, sizeof(FTPTime));
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}
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bool valid;
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FTPEntryType type;
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const char* filename;
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uint32_t filenameLength;
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const char* linkname;
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uint32_t linknameLength;
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String fileSize;
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FTPTime modifiedTime;
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bool caseSensitive; // file system is definitely case insensitive
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};
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FTPEntryType parseOneFTPLine(const char* inputLine, ListState&, ListResult&);
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} // namespace WebCore
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