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128 lines
6.1 KiB
C
128 lines
6.1 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org Code.
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*
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* The Initial Developer of the Original Code is
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* Cyrus Patel <cyp@fb14.uni-mainz.de>.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Doug Turner <dougt@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nspr.h"
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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 consistently: 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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/* #undef anything you don't want to support */
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#define SUPPORT_LSL /* /bin/ls -l and dozens of variations therof */
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#define SUPPORT_DLS /* /bin/dls format (very, Very, VERY rare) */
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#define SUPPORT_EPLF /* Extraordinarily Pathetic List Format */
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#define SUPPORT_DOS /* WinNT server in 'site dirstyle' dos */
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#define SUPPORT_VMS /* VMS (all: MultiNet, UCX, CMU-IP) */
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#define SUPPORT_CMS /* IBM VM/CMS,VM/ESA (z/VM and LISTING forms) */
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#define SUPPORT_OS2 /* IBM TCP/IP for OS/2 - FTP Server */
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#define SUPPORT_W16 /* win16 hosts: SuperTCP or NetManage Chameleon */
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struct list_state
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{
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void *magic; /* to determine if previously initialized */
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PRTime now_time; /* needed for year determination */
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PRExplodedTime now_tm; /* needed for year determination */
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PRInt32 lstyle; /* LISTing style */
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PRInt32 parsed_one; /* returned anything yet? */
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char carry_buf[84]; /* for VMS multiline */
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PRUint32 carry_buf_len; /* length of name in carry_buf */
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PRUint32 numlines; /* number of lines seen */
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};
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struct list_result
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{
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PRInt32 fe_type; /* 'd'(dir) or 'l'(link) or 'f'(file) */
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const char * fe_fname; /* pointer to filename */
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PRUint32 fe_fnlen; /* length of filename */
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const char * fe_lname; /* pointer to symlink name */
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PRUint32 fe_lnlen; /* length of symlink name */
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char fe_size[40]; /* size of file in bytes (<= (2^128 - 1)) */
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PRExplodedTime fe_time; /* last-modified time */
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PRInt32 fe_cinfs; /* file system is definitely case insensitive */
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/* (converting all-upcase names may be desirable) */
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};
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int ParseFTPList(const char *line,
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struct list_state *state,
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struct list_result *result );
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