зеркало из https://github.com/mozilla/pjs.git
652 строки
20 KiB
Perl
Executable File
652 строки
20 KiB
Perl
Executable File
#!/export2/gnu/files/perl-5.6.0/bin/perl -w
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# -*- Mode: perl; indent-tabs-mode: nil -*-
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#
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# The contents of this file are subject to the Mozilla Public
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# License Version 1.1 (the "License"); you may not use this file
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# except in compliance with the License. You may obtain a copy of
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# the License at http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS
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# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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# implied. See the License for the specific language governing
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# rights and limitations under the License.
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#
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# The Original Code is Doctor.
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#
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# The Initial Developer of the Original Code is Netscape
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# Communications Corporation. Portions created by Netscape
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# are Copyright (C) 2002 Netscape Communications Corporation.
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# All Rights Reserved.
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#
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# Contributor(s): Myk Melez <myk@mozilla.org>
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################################################################################
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# Script Initialization
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################################################################################
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# Make it harder to do dangerous things in Perl.
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use diagnostics;
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use strict;
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# Make it easier to access Perl's built-in variables by turning on the option
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# of referencing them by sensible name instead of punctuation mark.
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use English;
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# Include the standard Perl CGI library and create a new request object
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# to handle this CGI request.
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use CGI;
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my $request = new CGI;
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# Use a useful library for capturing filehandle output into a variable.
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# http://groups.google.com/groups?selm=yr0e8.12924%24ZC3.1033373%40newsread2.prod.itd.earthlink.net
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use IO::Capture;
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# Include the Perl library for creating and deleting directory hierarchies.
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use File::Path;
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# Use the Template Toolkit (http://www.template-toolkit.org/) to generate
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# the user interface using templates in the "template/" subdirectory.
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use Template;
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# Create the global template object that processes templates and specify
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# configuration parameters that apply to templates processed in this script.
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my $template = Template->new(
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{
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# Colon-separated list of directories containing templates.
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INCLUDE_PATH => "templates" ,
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FILTERS =>
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{
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linebreak => sub
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{
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my ($var) = @_;
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$var =~ s/\\/\\\\/g;
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$var =~ s/\n/\\n/g;
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$var =~ s/\r/\\r/g;
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return $var;
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}
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}
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}
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);
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# Define the global variables and functions that will be passed to the UI
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# template. Individual functions add their own values to this hash before
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# sending them to the templates they process.
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my $vars = {};
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################################################################################
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# Script Configuration
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################################################################################
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# Note: Look in the configuration file for descriptions of each parameter.
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# Use the AppConfig module for handling script configuration.
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use AppConfig qw(:expand :argcount);
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# Create an AppConfig object and populate it with parameters defined
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# in the configuration file.
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my $config = AppConfig->new(
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{
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CREATE => 1 ,
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GLOBAL => {
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ARGCOUNT => ARGCOUNT_ONE ,
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}
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}
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);
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$config->file("doctor.conf");
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# Write parameters into global variables.
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my $TEMP_DIR = $config->get('TEMP_DIR');
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my $READ_CVS_SERVER = $config->get('READ_CVS_SERVER');
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my $READ_CVS_USERNAME = $config->get('READ_CVS_USERNAME');
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my $READ_CVS_PASSWORD = $config->get('READ_CVS_PASSWORD');
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my $WRITE_CVS_SERVER = $config->get('WRITE_CVS_SERVER');
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my $WEB_BASE_URI = $config->get('WEB_BASE_URI');
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my $WEB_BASE_URI_PATTERN = $config->get('WEB_BASE_URI_PATTERN');
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my $WEB_BASE_PATH = $config->get('WEB_BASE_PATH');
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# Store the home directory so we can get back to it after changing directories
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# in certain places in the code.
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use Cwd;
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my $HOME = cwd;
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################################################################################
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# Main Body Execution
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################################################################################
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# Note: All calls to this script should contain an "action" variable
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# whose value determines what the user wants to do. The code below
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# checks the value of that variable and runs the appropriate code.
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# Determine whether to use the action specified by the user or the default.
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my $action = lc($request->param('action')) || "edit";
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# If the user wants to edit a file, but they haven't specified the name
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# of the file, prompt them for it.
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if ($action eq "edit" && !$request->param('file')) { $action = "select" }
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if ($action eq "select")
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{
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print $request->header;
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$template->process("select.tmpl", $vars)
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|| DisplayError("Template Process Failed", $template->error())
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&& exit;
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}
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elsif ($action eq "edit")
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{
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ValidateFile();
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$vars->{'file'} = $request->param('file');
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if ($request->param('content'))
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{
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ValidateContent();
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$vars->{'content'} = $request->param('content');
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$vars->{'version'} = $request->param('version');
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$vars->{'line_endings'} = $request->param('line_endings');
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}
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else
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{
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($vars->{'content'}, $vars->{'version'}, $vars->{'line_endings'})
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= RetrieveFile($request->param('file'));
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}
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print $request->header;
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$template->process("edit.tmpl", $vars)
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|| DisplayError("Template Process Failed", $template->error())
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&& exit;
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}
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elsif ($action eq "review")
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{
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ValidateFile();
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ReviewChanges();
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}
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elsif ($action eq "commit")
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{
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ValidateContent();
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ValidateUsername();
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ValidatePassword();
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ValidateComment();
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CommitFile();
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}
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else
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{
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DisplayError("I could not figure out what you wanted to do.", "Unknown action");
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}
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exit;
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################################################################################
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# Input Validation
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################################################################################
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sub ValidateFile
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{
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# Make sure a path was entered.
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my $file = $request->param("file");
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$file
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|| DisplayError("You must include the name of the file.")
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&& exit;
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# URL -> Path Conversion
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# Remove the absolute URI for files on the web site (if any)
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# from the beginning of the path.
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if ($WEB_BASE_URI_PATTERN) { $file =~ s/^$WEB_BASE_URI_PATTERN//i }
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else { $file =~ s/^\Q$WEB_BASE_URI\E//i }
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# Entire Path Issues
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# Collapse multiple consecutive slashes (i.e. dir//file.txt) into a single slash.
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$file =~ s:/{2,}:/:;
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# Beginning of Path Issues
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# Remove a preceding slash.
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$file =~ s:^/::;
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# Add the base path of the file in the cvs repository if necessary.
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# (i.e. if the user entered a URL or a path based on the URL).
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if ($file !~ /^\Q$WEB_BASE_PATH\E/) { $file = $WEB_BASE_PATH . $file }
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# End of Path Issues
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# If the filename (the last name in the path) contains no period,
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# it is probably a directory, so add a slash.
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if ($file =~ m:^[^\./]+$: || $file =~ m:/[^\./]+$:) { $file .= "/" }
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# If the file ends with a forward slash, it is a directory,
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# so add the name of the default file.
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if ($file =~ m:/$:) { $file .= "index.html" }
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# Set the file path.
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$request->param("file", $file);
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# Note: we don't need to make sure the file exists at this point
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# because CVS will tell us that.
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# Construct a URL to the file if possible.
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my $url = $file;
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if ($url =~ s/^\Q$WEB_BASE_PATH\E(.*)$/$1/i) { $vars->{'file_url'} = $WEB_BASE_URI . $url }
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}
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sub ValidateUsername
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{
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$request->param('username')
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|| DisplayError("You must enter a username.")
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&& exit;
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my $username = $request->param('username');
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# If the username has an at sign in it, convert it to a percentage sign,
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# since that is probably what the user meant (CVS usernames are often
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# email addresses in which the at sign has been converted to a percentage sign.
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$username =~ s/@/%/;
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$request->param('username', $username);
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}
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sub ValidatePassword
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{
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$request->param('password')
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|| DisplayError("You must enter a password.")
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&& exit;
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}
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sub ValidateComment
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{
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$request->param('comment')
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|| DisplayError("You must enter a check-in comment.")
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&& exit;
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}
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sub ValidateContent
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{
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my $content = $request->param('content');
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# The HTML spec tells browsers to remove line breaks (carriage return
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# and newline characters) from form values in some cases. This happens
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# even if those characters are encoded into entities ( and ).
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# To prevent corruption of file content in this case, we have to escape
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# those characters as \r and \n, so here we convert them back.
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#
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# An escaped line break is the literal string "\r" or "\n" with zero
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# or an even number of slashes before it, because if there are an odd
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# number of slashes before it, then the total number of slashes is even,
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# so the slashes are actually escaped slashes followed by a literal
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# "r" or "n" character, rather than an escaped line break character.
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# In other words, "\n" and "\\\n" are a line break and a slash followed
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# by a line break, respectively, but "\\n" is a slash followed by
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# a literal "n".
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#
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$content =~ s/(^|[^\\])((\\\\)*)\\r/$1$2\r/g;
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$content =~ s/(^|[^\\])((\\\\)*)\\n/$1$2\n/g;
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$content =~ s/\\\\/\\/g;
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$request->param('content', $content);
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}
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################################################################################
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# Utility Functions
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################################################################################
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sub RetrieveFile
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{
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my ($name) = @_;
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my @args = ("-d",
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":pserver:$READ_CVS_USERNAME:$READ_CVS_PASSWORD\@$READ_CVS_SERVER",
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"checkout",
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"-p", # write to STDOUT
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$name);
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# Check out the file from the CVS repository, capturing the file content
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# and any errors/notices.
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my $CAPTURE_ERR = IO::Capture->new(\*STDERR);
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my $CAPTURE_OUT = IO::Capture->new(\*STDOUT);
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my $error_code = system("cvs", @args);
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my $output = $CAPTURE_OUT->capture;
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my $errors = $CAPTURE_ERR->capture;
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if ($error_code != 0)
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{
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# Include the command in the error message (but hide the username/password).
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my $command = join(" ", "cvs", @args);
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$command =~ s/\Q$READ_CVS_PASSWORD\E/[password]/g;
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$errors =~ s/\Q$READ_CVS_PASSWORD\E/[password]/g;
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DisplayError("I could not check the file out from the repository.<br>
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<strong>Command:</strong> <em>$command</em><br>
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<strong>Error Code:</strong> <em>$error_code</em><br>
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<strong>Error Message:</strong><b><pre>$errors</pre>");
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exit;
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}
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# Extract the file version from the errors/notices.
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my $version = "";
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if ($errors =~ /VERS:\s([0-9.]+)\s/) { $version = $1 }
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# Figure out the line-ending style by examining the content of the file.
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my $line_endings = "unix";
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if ($output =~ /\r\n/s) { $line_endings = "windows" }
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elsif ($output =~ /\r[^\n]/s) { $line_endings = "mac" }
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return ($output, $version, $line_endings);
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}
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sub ReviewChanges
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{
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# Displays a diff between the version of a file in the repository
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# and the version submitted by the user so the user can review the
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# changes they are making to the file. Offers the user the option
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# to either commit their changes or edit the file some more.
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# Create and change to a temporary sub-directory into which
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# we will check out the file being reviewed.
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CreateTempDir();
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# Check out the file from the repository.
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my $file = $request->param('file');
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my $oldversion = $request->param('version');
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my $newversion = CheckOutFile($file);
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# Throw an error if the version of the file that was edited
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# does not match the version in the repository. In the future
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# we should try to merge the user's changes if possible.
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if ($oldversion && $newversion && $oldversion != $newversion)
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{
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DisplayError("You edited version <em>$oldversion</em> of the file,
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but version <em>$newversion</em> is in the repository.
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Reload the edit page and make your changes again
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(and bother the authors of this script to implement
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change merging).");
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DeleteTempDir();
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exit;
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}
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# Replace the checked out file with the edited version, generate
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# a diff between the edited file, and display it to the user.
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ReplaceFile($file);
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$vars->{'diff'} = DiffFile($file);
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# Delete the temporary directory into which we checked out the file.
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DeleteTempDir();
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$vars->{'file'} = $file;
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$vars->{'content'} = $request->param('content');
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$vars->{'version'} = $request->param('version');
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$vars->{'line_endings'} = $request->param('line_endings');
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print $request->header;
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$template->process("review.tmpl", $vars)
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|| DisplayError("Template Process Failed", $template->error())
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&& exit;
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}
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sub CommitFile
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{
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# Commit a file to the repository. Checks out the file via cvs,
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# applies the changes, generates a diff, and then checks the file
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# back in. It would be easier if we could commit a file by piping
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# it into standard input, but cvs does not provide for this.
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# Create and change to a temporary sub-directory into which
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# we will check out the file being committed.
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CreateTempDir();
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# Check out the file from the repository.
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my $file = $request->param('file');
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my $oldversion = $request->param('version');
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my $newversion = CheckOutFile($file);
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# Throw an error if the version of the file that was edited
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# does not match the version in the repository. In the future
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# we should try to merge the user's changes if possible.
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if ($oldversion && $newversion && $oldversion != $newversion)
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{
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DisplayError("You edited version <em>$oldversion</em> of the file,
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but version <em>$newversion</em> is in the repository.
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Reload the edit page and make your changes again
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(and bother the authors of this script to implement
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change merging).");
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DeleteTempDir();
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exit;
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}
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# Replace the checked out file with the edited version, generate
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# a diff between the edited file and the version in the repository,
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# and check in the edited file.
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ReplaceFile($file);
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$vars->{'diff'} = DiffFile($file);
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$vars->{'checkin_results'} = CheckInFile($file);
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# Delete the temporary directory into which we checked out the file.
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DeleteTempDir();
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$vars->{'file'} = $file;
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$vars->{'at_sign'} = $at_sign;
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print $request->header;
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$template->process("committed.tmpl", $vars)
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|| DisplayError("Template Process Failed", $template->error())
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&& exit;
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}
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sub CheckOutFile
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{
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# Checks out a file from the repository.
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my ($file) = @_;
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my @args = ("-t", # debugging messages from which to extract the version
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"-d",
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":pserver:$READ_CVS_USERNAME:$READ_CVS_PASSWORD\@$READ_CVS_SERVER",
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"checkout",
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$file);
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# Check out the file from the repository, capturing the output of the
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# command and any error messages/notices.
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my $CAPTURE_ERR = IO::Capture->new(\*STDERR);
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my $CAPTURE_OUT = IO::Capture->new(\*STDOUT);
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my $error_code = system("cvs", @args);
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my $output = $CAPTURE_OUT->capture;
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my $errors = $CAPTURE_ERR->capture;
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if ($error_code != 0)
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{
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# Include the command in the error message (but hide the password).
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my $command = join(" ", "cvs", @args);
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$command =~ s/\Q$READ_CVS_PASSWORD\E/[password]/g;
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$errors =~ s/\Q$READ_CVS_PASSWORD\E/[password]/g;
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DisplayError("I could not check the file out from the repository.<br>
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<strong>Command:</strong> <em>$command</em><br>
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<strong>Error Message:</strong><b><pre>$errors</pre>");
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DeleteTempDir();
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exit;
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}
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# Extract the file version from the errors/notices.
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my $version = "";
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if ($errors =~ /\Q$file\E,v,\s([0-9.]+),/) { $version = $1 }
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return $version;
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}
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sub ReplaceFile
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{
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# Replaces the file checked out from the repository with the edited version.
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my ($file) = @_;
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my $content = $request->param('content');
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my $line_endings = $request->param('line_endings');
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# Replace the Windows-style line endings in which browsers send content
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# with line endings appropriate to the file being replaced if the file
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# has Unix- or Mac-style line endings.
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if ($line_endings eq "unix") { $content =~ s/\r\n/\n/g }
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if ($line_endings eq "mac") { $content =~ s/\r\n/\r/g }
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if (!open(DOC, ">$file"))
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{
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DisplayError("I could not open the temporary file <em>$file</em>
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for writing: $!");
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DeleteTempDir();
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exit;
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}
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print DOC $content;
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close(DOC);
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}
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sub DiffFile
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{
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# Returns the results of diffing a file against the version in the repository.
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my ($file) = @_;
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my @args = ("-d",
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":pserver:$READ_CVS_USERNAME:$READ_CVS_PASSWORD\@$READ_CVS_SERVER",
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"diff",
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"-u",
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$file);
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# Diff the file against the version in the repository, capturing the diff
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# and any error messages/notices.
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|
my $CAPTURE_ERR = IO::Capture->new(\*STDERR);
|
|
my $CAPTURE_OUT = IO::Capture->new(\*STDOUT);
|
|
my $error_code = system("cvs", @args);
|
|
my $output = $CAPTURE_OUT->capture;
|
|
my $errors = $CAPTURE_ERR->capture;
|
|
|
|
# Check the error messages/notices in addition to the error code
|
|
# returned by the system call, because for some reason the call
|
|
# sometimes returns a non-zero error code (256) upon success.
|
|
if ($error_code && $errors)
|
|
{
|
|
# Include the command in the error message (but hide the password).
|
|
my $command = join(" ", "cvs", @args);
|
|
$command =~ s/\Q$READ_CVS_PASSWORD\E/[password]/g;
|
|
$errors =~ s/\Q$READ_CVS_PASSWORD\E/[password]/g;
|
|
|
|
DisplayError("I could not diff your version of the file against
|
|
the version in the repository.<br>
|
|
<strong>Command:</strong> <em>$command</em><br>
|
|
<strong>Error Message:</strong><b><pre>$errors</pre>");
|
|
|
|
DeleteTempDir();
|
|
exit;
|
|
}
|
|
|
|
if (!$output)
|
|
{
|
|
DisplayError("You didn't change anything!");
|
|
DeleteTempDir();
|
|
exit;
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
sub CheckInFile
|
|
{
|
|
# Checks a file into the repository.
|
|
|
|
my ($file) = @_;
|
|
|
|
my $username = $request->param('username');
|
|
my $password = $request->param('password');
|
|
|
|
my $comment = $request->param('comment');
|
|
my @args = ("-d" ,
|
|
":pserver:$username:$password\@$WRITE_CVS_SERVER" ,
|
|
"commit" ,
|
|
"-m" ,
|
|
$comment ,
|
|
$file);
|
|
|
|
# Check the file into the repository and capture the results.
|
|
my $CAPTURE_ERR = IO::Capture->new(\*STDERR);
|
|
my $CAPTURE_OUT = IO::Capture->new(\*STDOUT);
|
|
my $error_code = system("cvs", @args);
|
|
my $output = $CAPTURE_OUT->capture;
|
|
my $errors = $CAPTURE_ERR->capture;
|
|
|
|
if ($error_code != 0)
|
|
{
|
|
# Include the command in the error message (but hide the password).
|
|
my $command = join(" ", "cvs", @args);
|
|
$command =~ s/\Q$password\E/[password]/g;
|
|
$errors =~ s/\Q$password\E/[password]/g;
|
|
|
|
DisplayError("I could not check your version of the file
|
|
into the repository.<br>
|
|
<strong>Command:</strong> <em>$command</em><br>
|
|
<strong>Error Message:</strong><br><pre>$errors</pre>");
|
|
|
|
DeleteTempDir();
|
|
exit;
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
sub DisplayError
|
|
{
|
|
($vars->{'message'}, $vars->{'title'}) = @_;
|
|
|
|
chdir($HOME)
|
|
|| die("Could not change back to original working directory
|
|
to deliver error message <strong>$vars->{'title'}</strong>:
|
|
<em>$vars->{'message'}</em>.");
|
|
|
|
print $request->header;
|
|
$template->process("error.tmpl", $vars)
|
|
|| die("<strong>Template Error</strong>: <em>" . $template->error() . "</em>
|
|
while trying to deliver error message <strong>$vars->{'title'}</strong>:
|
|
<em>$vars->{'message'}</em>.");
|
|
}
|
|
|
|
sub CreateTempDir
|
|
{
|
|
# Creates and changes to a temporary sub-directory unique to this process
|
|
# that can be used for CVS activities requiring the checking out of files.
|
|
|
|
if (!-e $TEMP_DIR and !mkdir($TEMP_DIR))
|
|
{
|
|
DisplayError("I could not create the temporary directory <em>$TEMP_DIR</em>: $!");
|
|
exit;
|
|
}
|
|
elsif (!-d $TEMP_DIR)
|
|
{
|
|
DisplayError("I could not use the temporary directory <em>$TEMP_DIR</em>
|
|
because it is not a directory.");
|
|
exit;
|
|
}
|
|
|
|
# Create and change to a unique sub-directory in the temporary directory.
|
|
mkdir("$TEMP_DIR/$PID")
|
|
|| DisplayError("I could not create a temporary sub-directory <em>$TEMP_DIR/$PID</em>: $!")
|
|
&& exit;
|
|
|
|
chdir("$TEMP_DIR/$PID")
|
|
|| DisplayError("I could not change to the temporary sub-directory <em>$TEMP_DIR/$PID</em>: $!")
|
|
&& exit;
|
|
}
|
|
|
|
sub DeleteTempDir
|
|
{
|
|
# Changes back to the home directory and deletes the temporary directory.
|
|
|
|
chdir($HOME);
|
|
rmtree("$TEMP_DIR/$PID", 0, 1)
|
|
|| DisplayError("I could not delete the temporary sub-directory <em>$TEMP_DIR/$PID</em>: $!")
|
|
&& exit;
|
|
}
|