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REBOL [ Title: {Patch for REBOL FTP protocol 226 response handling.} Copyright: {Copyright 2003 Brett Handley} Author: {Brett Handley} Web: File: %patch-ftp-226-handling.r Date: 3-jul-2005 Purpose: {To fix FTP protocol 226 response handling.} Library: [ level: 'advanced type: [function] platform: 'all support: none domain: [ftp patch] tested-under: [ view on [WinNT4] {Patch and resultant FTP behaviour tested.} "Brett" core on [WinNT4] {Application of patch tested only.} "Brett" core on [WinNT4] {Application of patch tested only.} "Brett" link on [WinNT4] {Application of patch tested only.} "Brett" command on [WinNT4] {Application of patch tested only.} "Brett" command/view on [WinNT4] {Application of patch tested only.} "Brett" ] license: none comment: { Copyright (C) 2003 Brett Handley All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. } ] Comment: { ---When to use this script This script is only useful for older versions of REBOL (official releases older than REBOL/View 1.3). ---What this script does It defines a function to modify REBOL FTP protocol handler functions to fix a known bug. It then calls the function on FTP protocol handler functions that are known to have the bug. ---How to use this script Just DO it. If you want to see if changes are made then print the result of the DO, for example: PRINT DO %patch-ftp-226-handling.r If you are an SDK user then you could apply this script, view the changes and incorporate them into the source of your encapped applications manually. ---When this script might fail This script makes an assumption that the REBOL FTP protocol code below is always wrong: net-utils/confirm port/locals/cmd-port transfer-check and that the replacement code is always right: net-utils/confirm/multiline port/locals/cmd-port transfer-check If this assumption is broken the script will not have the intended effect. } ] ; ----------------------------------------------------------------- ; Function to modify FTP handler code in-place. ; ----------------------------------------------------------------- fix-ftp-226-handling: func [ {Fixes FTP 226 server response handling bug in a FTP handler function.} function-name [word!] /local bug-occurrence input change-rule log-func value result code ][ ; ----------------------------------------------------------------- ; A parse rule to match an occurrence of the bugged code and to fix it. ; Only designed and tested for the multiline bug of this script. ; ----------------------------------------------------------------- bug-occurrence: [ path! path! 'transfer-check ( if find/match input [ net-utils/confirm port/locals/cmd-port transfer-check ][ result: any [result copy {}] insert tail input/1 'multiline append result rejoin [ {Fixed occurrence of FTP 226 handling bug in } form function-name ".^/" ] ] ) ] ; ----------------------------------------------------------------- ; The overall parse rule to recursively process REBOL code. ; ----------------------------------------------------------------- change-rule: [ any [ input: bug-occurrence | block! :input into change-rule | skip ] ] ; ----------------------------------------------------------------- ; Process the function. ; ----------------------------------------------------------------- code: second get in system/schemes/ftp/handler function-name either parse code change-rule [ any [result rejoin [{No changes to } form function-name ".^/"]] ][ make error! "FTP 226 server response handling patch failed part way through!" ] ] ; ----------------------------------------------------------------- ; Apply the patch now to the FTP handler functions and emit a log as result. ; ----------------------------------------------------------------- reduce [ fix-ftp-226-handling 'open fix-ftp-226-handling 'close ]
halt ;; to terminate script if DO'ne from webpage