error.cgi

#!/usr/bin/env ruby

############################################################################
# Copyright 2009-2019 Benjamin Kellermann                                  #
#                                                                          #
# This file is part of Dudle.                                              #
#                                                                          #
# Dudle is free software: you can redistribute it and/or modify it under   #
# the terms of the GNU Affero General Public License as published by       #
# the Free Software Foundation, either version 3 of the License, or        #
# (at your option) any later version.                                      #
#                                                                          #
# Dudle is distributed in the hope that it will be useful, but WITHOUT ANY #
# WARRANTY; without even the implied warranty of MERCHANTABILITY or        #
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public     #
# License for more details.                                                #
#                                                                          #
# You should have received a copy of the GNU Affero General Public License #
# along with dudle.  If not, see <http://www.gnu.org/licenses/>.           #
############################################################################

require_relative 'dudle'

if File.exist?("#{Dir.pwd}/#{File.dirname(ENV.fetch('REDIRECT_URL', nil))}/data.yaml")
	$d = Dudle.new(title: _('Error'), hide_lang_chooser: true, load_extensions: false, relative_dir: '../')
else
	$d = Dudle.new(title: _('Error'), hide_lang_chooser: true, load_extensions: false)
end

if File.exist?($conf.errorlog)
	begin
		a = File.open($conf.errorlog, 'r').to_a
	rescue Exception => e
		errorstr = "Exception while opening #{$conf.errorlog}:\n#{e}"
	else
		s = [a.pop]
		s << a.pop while s.last.scan(/^\[([^\]]*)\] \[/).flatten[0] == a.last.scan(/^\[([^\]]*)\] \[/).flatten[0] || a.last =~ /^[^\[]/
		errorstr = s.reverse.join
	end

	errormessage = "\n" + _('The following error was printed:') + "\n" + errorstr

end

errormessagebody = format(_("Hi!\n\nI found a bug in your application at %<urlofsite>s.\nI did the following:\n\n<please describe what you did>\n<e.g., I wanted to post a comment to the poll.>\n\nI am using <please state your browser and operating system>\n%<errormessage>s\nSincerely,\n"), errormessage: errormessage, urlofsite: $conf.siteurl)
subject = _('Bug in DuD-Poll')

$d << (format(_('An error occurred while executing DuD-Poll.<br/>Please send an error report, including your browser, operating system, and what you did to %<admin>s.'), admin: "<a href='mailto:#{$conf.bugreportmail}?subject=#{CGI.escape(subject).gsub('+', '%20')}&amp;body=#{CGI.escape(errormessagebody).gsub('+', '%20')}'>#{$conf.bugreportmail}</a>"))

if errorstr
	errorheadstr = _('Please include the following as well:')
	$d << <<ERROR
<br/>
#{errorheadstr}
<pre style='background:#DDD;padding : 1em'>#{CGI.escapeHTML(errorstr)}</pre>
ERROR
end

$d.out

known = false
if errorstr
	$conf.known_errors.each { |err|
		known = true if errorstr.index(err)
	}
end

if $conf.auto_send_report && !known
	tmpfile = "/tmp/error.#{rand(10_000)}"
	File.open(tmpfile, 'w') { |f|
		f << errorstr
	}

	`mail -s "Bug in DuD-Poll" #{$conf.bugreportmail} < #{tmpfile}`

	File.delete(tmpfile)

end