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|
#!/usr/bin/env ruby
# This is just a simple environment for remote processing of context
# files. It's not a framework, nor an example of how that should be done.
# Nowadays there are environments like Rails or Nitro. Maybe some day I'll
# give one of them a try.
# <META Http-Equiv="Cache-Control" Content="no-cache">
# <META Http-Equiv="Pragma" Content="no-cache">
# <META Http-Equiv="Expires" Content="0">
# we make limited use of cgi methods because we also need to handle webrick
# %var% as well as $(var) are supported
# paths need to be expanded before they enter apache, since .. is not
# handled by default
require 'base/variables'
require 'ftools'
require 'fileutils'
require 'tempfile'
require 'timeout'
require 'md5'
require 'digest/md5'
require 'cgi' # we also need escaping for webrick (could move it here)
# beware, namespaces have to match !
module XML
def XML::element(tag,attributes=nil)
if attributes.class == Hash then
if block_given? then
XML::element(tag,XML::attributes(attributes)) do yield end
else
XML::element(tag,XML::attributes(attributes))
end
else
if block_given? then
"<#{tag}#{if attributes && ! attributes.empty? then ' ' + attributes end}>#{yield}</#{tag}>"
else
"<#{tag}#{if attributes && ! attributes.empty? then ' ' + attributes end}/>"
end
end
end
def XML::attributes(hash)
str = ''
hash.each do |k,v|
str << ' ' unless str.empty?
if v =~ /\'/ then
str << "#{k}=\"#{v}\""
else
str << "#{k}=\'#{v}\'"
end
end
return str
end
def XML::create(version='1.0')
"<?version='#{version}'?>#{yield || ''}"
end
def XML::line
"\n"
end
end
# str =
# XML::create do
# XML::element('test') do
# XML::element('test') do
# 'text a'
# end +
# XML::element('test',XML::attributes({'a'=>'b'})) do
# XML::element('nested',XML::attributes({'a'=>'b'})) do
# 'text b-1'
# end +
# XML::element('nested',XML::attributes({'a'=>'b'})) do
# 'text b-2'
# end
# end +
# XML::element('nested',{'a'=>'b'}) do
# 'text c'
# end
# end
# end
class ExtendedHash
DEFAULT = 'default'
@@re_default = /^(default|)$/i
def default?(key)
self[key] =~ @@re_default rescue true # unset, empty or 'default'
end
def default(key)
self[key] = DEFAULT
end
def match?(key,value)
value == '*' || value == self[key]
end
end
class WWW
@@session_prefix = ''
@@data_file = 'example.cfg'
@@session_max_age = 60*60
@@watch_delay = 30
@@send_threshold = 2*1024*1024
@@admin_refresh = 10
@@namespace = "http://www.pragma-ade.com/schemas/example.rng"
@@re_bar = /\s*\|\s*/
@@re_lst = /\s*\,\s*/
@@re_var_a = /\%(.*?)\%/
@@re_var_b = /\$\((.*?)\)/
attr_reader :variables
attr_writer :variables
@@paths = [
'configurations',
'data',
'distributions',
'documents',
'interfaces',
'logs',
'resources',
'runners',
'scripts',
'templates',
'work']
@@re_true = /^\s*(YES|ON|TRUE|1)\s*$/io
@@re_false = /^\s*(NO|OFF|FALSE|0)\s*$/io
def initialize(webrick_daemon=nil,webrick_request=nil,webrick_response=nil)
@session_id, @session_file = '', ''
@cgi, @cgi_cookie = nil, nil
@webrick_daemon, @webrick_request, @webrick_response = webrick_daemon, webrick_request, webrick_response
@interface = ExtendedHash.new
@variables = ExtendedHash.new
@session = ExtendedHash.new
@checked = false
analyze_request()
update_interface()
@interface.set('template:message' , 'exalogin-template.htm')
@interface.set('template:status' , 'exalogin-template.htm')
@interface.set('template:login' , 'exalogin.htm')
@interface.set('process:timeout' , @@session_max_age)
@interface.set('process:threshold' , @@send_threshold)
@interface.set('process:background', 'yes') # this demands a watchdog being active
@interface.set('process:indirect' , 'no') # indirect download, no direct feed
@interface.set('process:autologin' , 'yes') # provide default interface when applicable
@interface.set('process:exaurl' , '') # this one will be used as replacement in templates
@interface.set('trace:run' , 'no')
@interface.set('trace:errors' , 'no')
@interface.set('process:os' , platform)
@interface.set('process:texos' , 'texmf-' + platform)
@interface.set('trace:run' , 'yes') if (ENV['EXA_TRACE_RUN'] || '') =~ @@re_true
@interface.set('trace:errors' , 'yes') if (ENV['EXA_TRACE_ERRORS'] || '') =~ @@re_true
yield self if block_given?
end
def set(key,value)
@interface.set(key,value)
end
def get(key)
@interface.get(key,value)
end
def platform
case RUBY_PLATFORM
when /(mswin|bccwin|mingw|cygwin)/i then 'mswin'
when /(linux)/i then 'linux'
when /(netbsd|unix)/i then 'unix'
when /(darwin|rhapsody|nextstep)/i then 'macosx'
else 'unix'
end
end
def check_cgi
# when mod_ruby is used, we need to close
# the cgi session explicitly
unless @webrick_request then
unless @cgi then
@cgi = CGI.new('html4')
at_exit do
begin
@cgi.close
rescue
end
end
end
end
end
def request_variable(key)
begin
if @webrick_request then
[@webrick_request.query[key]].flatten.first.to_s
else
check_cgi
[@cgi.params[key]].flatten.first.to_s
end
rescue
''
end
end
def request_cookie(key)
begin
if @cgi then
if str = @cgi.cookies[key] then
return str.first || ''
end
elsif @webrick_request then
@webrick_request.cookies.flatten.each do |cookie|
if cookie.name == key then
return cookie.value unless cookie.value.empty?
end
end
end
rescue
end
return ''
end
def analyze_request
if @webrick_request then
@interface.set('path:docroot', @webrick_daemon.config[:DocumentRoot] || './documents')
@interface.set('process:uri', @webrick_request.request_uri.to_s)
# @interface.set('process.url', [@webrick_request.host,@webrick_request.request_port].join(':'))
@cgi = nil
@webrick_request.query.each do |key, value|
# todo: filename
@variables.set(key, [value].flatten.first)
end
else
@interface.set('path:docroot', ENV['DOCUMENT_ROOT'] || './documents')
@interface.set('process:uri', ENV['REQUEST_URI'] || '')
# @interface.set('process.url', [ENV['SERVER_NAME'],ENV['SERVER:PORT']].join(':'))
ARGV[0] = '' # get rid of terminal mode
check_cgi
# quite fragile, due to changes between 1.6 and 1.8
@cgi.params.keys.each do |p|
if @cgi[p].respond_to?(:original_filename) then
@interface.set('log:method','post')
if @cgi[p].original_filename && ! @cgi[p].original_filename.empty? then
@variables.set(p, File.basename(@cgi[p].original_filename))
else
case @cgi.params[p].class
when StringIO.class then @variables.set(p, @cgi[p].read)
when Array.class then @variables.set(p, @cgi[p].first.to_s)
when String.class then @variables.set(p, @cgi[p])
when Tempfile.class then @variables.set(p, '[data blob]')
end
end
else
@interface.set('log:method','get') unless @interface.get('log:method') == 'post'
@variables.set(p, [@cgi.params[p]].flatten.first.to_s)
end
end
end
@interface.set('path:root', File.dirname(@interface.get('path:docroot')))
end
# name in calling script takes precedence
# one can set template:whatever as well
# todo: in config
def check_template_file(tag='',filename='exalogin-template.htm')
@interface.set('file:template', filename) if @interface.get('file:template').empty?
@interface.set('tag:template', tag)
@interface.set('file:template', @interface.get('tag:template')) unless @interface.get('tag:template').empty?
end
def update_interface()
root = @interface.get('path:docroot')
@interface.set('path:docroot', File.expand_path("#{root}"))
@@paths.each do |path|
@interface.set("path:#{path}", File.expand_path("#{root}/../#{path}"))
end
@interface.set('file:template', @interface.get('tag:template')) unless @interface.get('tag:template').empty?
end
def indirect?(result)
size = FileTest.size?(result) || 0
@interface.true?('trace:errors') || @interface.true?('trace:run') || @interface.true?('process:indirect') ||
((! @interface.empty?('process:threshold')) && (size > @interface.get('process:threshold').to_i)) ||
((! @session.empty?('threshold')) && (size > @session.get('threshold').to_i))
end
end
# files
class WWW
def sesname
File.basename(@session_file)
end
def dirname
File.basename(@session_file.sub(/ses$/,'dir'))
end
def lckname
File.basename(@session_file.sub(/ses$/,'lck'))
end
def work_root(expand=true)
p = if expand then File.expand_path(@interface.get('path:work')) else @interface.get('path:work') end
if @interface.true?('process:background') then
File.join(@interface.get('path:work'),'watch')
else
File.join(@interface.get('path:work'),'direct')
end
end
def work_roots(expand=true)
p = if expand then File.expand_path(@interface.get('path:work')) else @interface.get('path:work') end
[File.join(@interface.get('path:work'),'watch'),File.join(@interface.get('path:work'),'direct')]
end
def cache_root(expand=true)
p = if expand then File.expand_path(@interface.get('path:work')) else @interface.get('path:work') end
File.join(@interface.get('path:work'),'cache')
end
def cleanup_path(dir)
FileUtils::rm_r(pth) rescue false
end
def tmp_path(dir)
@interface.set('path:templates', File.expand_path(@interface.get('path:templates'))) # to be sure; here ? ? ?
pth = File.join(work_root,dir)
File.makedirs(pth) rescue false
pth
end
def locked?(lck)
FileTest.file?(lck)
end
end
# sessions
class WWW
@@session_tags = ['id','domain','project','username','password','gui','path','process','command','filename','action','status', 'starttime','endtime','runtime','task','option','threshold','url'].sort
@@session_keep = ['id','domain','project','username','password','process'].sort
@@session_reset = @@session_tags - @@session_keep
def new_session()
if @variables.empty?('exa:session') then
@session_id = new_session_id
else
@session_id = @variables.get('exa:session')
end
if @session_id == 'default' then # ???
@session_id = new_session_id
end
@session_file = File.join(work_root,"#{@@session_prefix}#{@session_id}.ses")
register_session
return @session_id
end
def reset_session(all=false)
(if all then @@session_tags else @@session_reset end).each do |k|
@session.set(k)
end
end
def valid_session
@session_id = request_variable('id')
if @session_id.empty? then
begin
if @cgi then
if @session_id = @cgi.cookies['session_id'] then
@session_id = @session_id.first || ''
else
@session_id = ''
end
elsif @webrick_request then
@webrick_request.cookies.flatten.each do |cookie|
if cookie.name == 'session_id' then
unless cookie.value.empty? then
@session_id = cookie.value
# break
end
end
end
else
@session_id = ''
end
rescue
@interface.set('log:session',"[error in request #{$!}]")
return false
end
end
if @session_id.empty? then
@interface.set('log:session','[no id, check work dir permissions]')
return false
else
@interface.set('log:session',@session_id)
load_session
if ! @session.empty?('domain') && ! @session.empty?('project') && ! @session.empty?('username') then
register_session
return @session_id
else
return false
end
end
end
def touch_session(id=nil)
begin
t = Time.now
File.utime(t,t,File.join(work_root,"#{@@session_prefix}#{id || @session_id}.ses")) rescue false
rescue
false
end
end
def forced_session
@session_id = new_session
if @session_id.empty? then
@interface.set('log:session','[no id, check work dir permissions]')
return false
else
return check_session
end
end
def client_session
request, done = @variables.get('exa:request'), false
request.sub!(/(^.*<exa:request[^>]*>.*?)\s*<exa:client>\s*(.*)\s*<\/exa:client>\s*(.*?<\/exa:request>.*$)/mio) do
pre, client, post = $1, $2, $3
client.scan(/<exa:(domain|project|username|password)>(.*?)<\/exa:\1>/mio) do
@variables.set($1, $2)
end
done = true
pre + post
end
if done then
return forced_session
else
return nil
end
end
def register_session
if @cgi then
@cgi_cookie = CGI::Cookie::new(
'name' => 'session_id',
'value' => @session_id,
'expires' => Time.now + @interface.get('process:timeout').to_i
)
# @cgi_cookie = CGI::Cookie::new('session_id',@session_id)
elsif @webrick_response then
if cookie = WEBrick::Cookie.new('session_id', @session_id) then
cookie.expires = Time.now + @interface.get('process:timeout').to_i
cookie.max_age = @interface.get('process:timeout').to_i
cookie.comment = 'exa identifier'
@webrick_response.cookies.clear
@webrick_response.cookies << cookie
end
end
end
def new_session_id # taken from cgi
md5 = Digest::MD5::new
now = Time::now
md5.update(now.to_s)
md5.update(String(now.usec))
md5.update(String(rand(0)))
md5.update(String($$))
md5.update('foobar')
@new_session = true
md5.hexdigest[0,32] # was 16
end
@@hide_passwords = true
HIDDEN = 'hidden'
def same_passwords(password) # password in cfg file
if @@hide_passwords && (@session.get('password') == HIDDEN) && (@session_id == @session.get('id')) then
# this condition is only true when a same session id is found and
# the password is checked once and set to HIDDEN
same = true
elsif password =~ /^MD5:/ then
# so, one cannot send a known encrypted password since it will be
# encrypted twice then
same = (password == "MD5:" + MD5.new(@session.get('password')).hexdigest.upcase)
else
if (@session.default?('domain') && @session.default?('project') && @session.default?('username')) then
@session.default('password') # is this safe enough?
end
same = (password == @session.get('password'))
end
if @@hide_passwords && same then
@session.set('password', HIDDEN)
save_session # next time this session is ok anyway
end
return same
end
@@session_line = /^\s*(?![\#\%])(.*?)\s*\=\s*(.*?)\s*$/o
@@session_begin = 'begin exa session'
@@session_end = 'end exa session'
def loaded_session_data(filename)
begin
if data = IO.readlines(filename) then
return data if (data.first =~ /^[\#\%]\s*#{@@session_begin}/o) && (data.last =~ /^[\#\%]\s*#{@@session_end}/o)
end
rescue
end
return nil
end
def load_session()
begin
@session_file = File.join(work_root,"#{@@session_prefix}#{@session_id}.ses")
if data = loaded_session_data(@session_file) then
data.each do |line|
if line =~ @@session_line then
@session.set($1, $2 || '')
end
end
else
return false
end
rescue
return false
else
return true
end
end
def load_session_file(filename)
begin
if data = loaded_session_data(filename) then
session = Hash.new
data.each do |line|
if line =~ @@session_line then
session[$1] = $2 || ''
end
end
else
Hash.new
end
rescue
Hash.new
else
session
end
end
def save_session
begin
unless @session_id.empty? then
@session_file = File.join(work_root,"#{@@session_prefix}#{@session_id}.ses")
@session_file = File.join(work_root,"#{@@session_prefix}#{@session_id}.ses")
File.open(@session_file,'w') do |f|
f << "\# #{@@session_begin}\n"
@@session_tags.each do |tag|
if @session && @session.key?(tag) then
if ! @session.get(tag).empty? then # no one liner, fails
f << "#{tag}=#{@session.get(tag)}\n"
end
elsif @variables.key?(tag) && ! @variables.empty?(key) then
f << "#{tag}=#{@variables.get(tag)}\n"
end
end
@session.subset("ENV").keys.each do |tag|
f << "#{tag}=#{@session.get(tag)}\n"
end
f << "\# #{@@session_end}\n"
end
end
rescue
return false
else
return true
end
end
def logged_in_session(force_default=false)
if force_default || (@variables.default?('domain') && @variables.default?('project') && @variables.default?('username')) then
id = default_session
else
id = check_session
end
end
def default_session
if @interface.true?('process:autologin') then
@variables.default('domain')
@variables.default('project')
@variables.default('username')
@variables.default('password')
check_session
else
@session_id = nil
end
end
def check_session
@session.set('domain', @variables.get('domain').downcase)
@session.set('project', @variables.get('project').downcase)
@session.set('username', @variables.get('username').downcase)
@session.set('password', @variables.get('password').downcase)
new_session
@session.set('id', @session_id)
save_session
return @session_id
end
def delete_session(id=nil)
File.delete(work_root,"#{@@session_prefix}#{id || @session_id}.ses") rescue false
end
def cleanup_sessions(max_age=nil)
begin
now, age = Time.now, (max_age||@interface.get('process:timeout')).to_i
Dir.glob("{#{work_root},#{cache_root}/#{@@session_prefix}*").each do |s|
begin
if (now - File.mtime(s)) > age then
if FileTest.directory?(s) then
FileUtils::rm_r(s)
else
File.delete(s)
end
end
rescue
# maybe purged in the meantime
end
end
rescue
# maybe another process is busy
end
end
end
# templates
class WWW
def filled_template(title,text,showtime=false,refresh=0,refreshurl=nil)
template = @interface.get("template:#{@interface.get('tag:template')}")
template = @interface.get("template:status") if template.empty?
fullname = File.join(@interface.get('path:templates'),template)
@interface.set('log:templatename',template)
@interface.set('log:templatefile',fullname)
append_status(text)
htmreply = ''
if FileTest.file?(fullname) then
begin
htmreply = IO.read(fullname)
rescue
htmreply = ''
end
end
if refresh>0 then
if refreshurl then
metadata = "<meta http-equiv='refresh' content='#{refresh};#{refreshurl}'>"
else
metadata = "<meta http-equiv='refresh' content='#{refresh}'>"
end
else
metadata = ''
end
if ! htmreply || htmreply.empty? then
# in head: <link rel='stylesheet' href='/exaresource/exastyle.css'>
htmreply = <<-EOD
<html>
#{metadata}
<head>
<title>#{title}</title>
</head>
<body>
<h2>#{title}</h2>
<h4>#{Time.now}</h4>
#{text}
</body>
</html>
EOD
else
if showtime then
exa_template = "<h1>#{title}</h1>\n<h2>#{Time.now}</h2>\n#{text}\n"
else
exa_template = "<h1>#{title}</h1>#{text}\n"
end
htmreply = replace_template_placeholder(htmreply,exa_template,metadata)
end
htmreply
end
def message(title,str='',showtime=false,refresh=0,refreshurl=nil)
if @cgi then
@cgi.out("cookie"=>[@cgi_cookie]) do
filled_template(title,str,showtime,refresh,refreshurl)
end
elsif @webrick_response then
@webrick_response['content-type'] = 'text/html'
@webrick_response.body = filled_template(title,str,showtime,refresh,refreshurl)
else
filled_template(title,str,showtime,refresh,refreshurl)
end
end
def plaintext(str)
if @cgi then
@cgi.out('cookie'=>[@cgi_cookie],'content-type'=>'text/plain') do
str
end
elsif @webrick_response then
@webrick_response['content-type'] = 'text/plain'
@webrick_response.body = str
else
str
end
end
def exareply(status='',url='',size='',comment='')
exaurl = @interface.get('process:exaurl')
str = "<?xml version='1.0'?>\n\n"
str << "<exa:reply xmlns:exa='#{@@namespace}'>\n"
str << " <exa:session>#{@session_id}</exa:session>\n" unless @session_id.empty?
str << " <exa:status>#{status}</exa:status>\n" unless (status || '').empty?
str << " <exa:url>#{exaurl}/#{url}</exa:url>\n" unless (url || '').empty?
str << " <exa:size>#{size}</exa:size>\n" unless (size || '').empty?
str << " <exa:comment>#{comment}</exa:comment>\n" unless (comment|| '').empty?
str << "</exa:reply>\n"
return str
end
def append_status(str='')
if @interface.true?('trace:errors') then
if $! && $@ then
str << "<br/><br/><br/><em>Error:</em><br/><pre>#{$!}</pre><pre>"
str << $@.join("\n")
end
str << '<br/><br/><br/>'
str << status_data
str << '<em>Paths</em><br/>'
str << '<pre>'
@interface.subset('path:').each do |k,v|
if FileTest.directory?(v) then
if FileTest.writable?(v) then
str << "#{v} exists and is writable\n"
else
str << "#{v} is not writable\n"
end
else
str << "#{v} does not exist\n"
end
end
str << '</pre>'
end
str
end
def simpleurl(url)
if url then url.sub(/(:80|:443)$/,'') else '' end
end
def replace_exa_placeholders(data)
data.gsub(/([\"\'])\@exa\_([a-zA-Z0-9\-\_]+)\1/) do
quot, key, value = $1, $2, ''
begin
value = @variables.get(key)
rescue
value = ''
end
quot + value + quot
end
end
def replace_url_placeholder(data)
data.gsub!(/(http:\/\/|\/+)*\@exa\_main\_url/, @interface.get('process:exaurl'))
replace_exa_placeholders(data)
end
def replace_template_placeholder(data,template='',metadata='')
data.gsub!(/(http:\/\/|\/+)*\@exa\_main\_url/, @interface.get('process:exaurl'))
data.gsub!(/\@exa\_template/, template)
data.gsub!(/\@exa\_metadata/, metadata)
replace_exa_placeholders(data)
end
def escaped(str)
str
end
end
# send files
class WWW
def send_file(filename,parse=false) # this can take a lot of memory, look for alternative (fastcgi ?)
begin
if filename =~ /\.pdf$/ then
mimetype, parse = 'application/pdf', false
elsif filename =~ /\.(html|htm)$/ then
mimetype, parse = 'text/html', true
else
mimetype, parse = 'text/plain', false
end
if FileTest.file?(filename) then
if @webrick_response then
begin
@webrick_response['content-type'] = mimetype
@webrick_response['content-length'] = FileTest.size?(filename)
if parse then
File.open(filename, 'rb') do |f|
@webrick_response.body = replace_url_placeholder(f.read)
end
else
@webrick_response.body = File.open(filename, 'rb')
end
rescue
else
return
end
elsif @cgi then
begin
# the following works ok, but stores the whole file in memory (see @cgi.out)
#
# File.open(filename, 'rb') do |f|
# @cgi.out('cookie'=>[@cgi_cookie],'connection'=>'close', 'length'=>File.size(filename), 'type'=>mimetype) do
# if parse then replace_url_placeholder(f.read) else f.read end
# end
# end
if parse then
File.open(filename, 'rb') do |f|
@cgi.out('cookie'=>[@cgi_cookie],'connection'=>'close', 'length'=>File.size(filename), 'type'=>mimetype) do
replace_url_placeholder(f.read)
end
end
else
@cgi.print(@cgi.header('cookie'=>[@cgi_cookie],'connection'=>'close', 'length'=>File.size(filename), 'type'=>mimetype))
File.open(filename, 'rb') do |f|
while str = f.gets do
@cgi.print(str)
end
end
end
rescue
else
return
end
end
end
rescue
end
message('Error', "There is a problem with sending file #{File.basename(filename)}.")
end
def send_htmlfile(filename,parse=false)
send_file(filename,parse)
end
def send_pdffile(filename) # this can take a lot of memory, look for alternative (fastcgi ?)
send_file(filename,false)
end
end
# tracing
class WWW
def show_vars(a=@variables,title='')
if a && a.length > 0 then
if title.empty? then
str = ''
else
str = "<em>#{title}</em>"
end
str << "<br/><pre>\n"
a.keys.sort.each do |k|
if k && a[k] && ! a[k].empty? then
if k == 'password' then
val = if a[k] == 'default' then 'default' else '******' end
else
# str << "#{k} => #{a[k].sub(/^\s+/moi,'').sub(/\s+$/moi,'')}\n"
val = a[k].to_s.strip
val.gsub!("&","&")
val.gsub!("<","<")
val.gsub!(">",">")
val.gsub!("\n","\n ")
end
str << "#{k} => #{val}\n"
end
end
str << "</pre><br/>\n"
return str
else
return ''
end
end
def status_data
show_vars(@session , 'Session' ) +
show_vars(@variables, 'Variables' ) +
show_vars(@interface, 'Interface' ) +
show_vars(ENV , 'Environment')
end
def report_status
check_template_file('status')
message('Status',status_data)
end
end
# attachments
class WWW
def extract_sent_files(dir)
files = Array.new
if @cgi then
@cgi.params.keys.each do |tag|
begin
if filename = @cgi[tag].original_filename then
files << extract_file_content(dir,filename,@cgi[tag]) unless filename.empty?
end
rescue
end
end
elsif @webrick_request then
@webrick_request.query.keys.each do |tag|
begin
if filename = @webrick_request.query[tag].filename then
files << extract_file_content(dir,filename,@webrick_request.query[tag]) unless filename.empty?
end
rescue
end
end
end
@interface.set('log:attachments', files.compact.uniq.join('|'))
end
def extract_file_content(dir,filename,data)
filename = File.join(dir,File.basename(filename))
begin
@interface.set('log:attachclass', data.class.inspect)
if data.class == Tempfile then
begin
File.copy(data.path,filename)
rescue
begin
File.open(filename,'wb') do |f|
File.open(data.path,'rb') do |g|
while str = g.gets do
f.write(str)
end
end
end
rescue
@interface.set('log:attachstate', "saving tempfile #{filename} failed (#{$!})")
else
@interface.set('log:attachstate', "tempfile #{filename} has been saved")
end
else
@interface.set('log:attachstate', "#{data.path} copied to #{filename}")
end
elsif data.class == String then
begin
File.open(filename,'wb') do |f|
f.write(data)
end
rescue
@interface.set('log:attachstate', "saving string #{filename} failed (#{$!})")
else
@interface.set('log:attachstate', "string #{filename} has been saved")
end
elsif data.class == StringIO then
begin
File.open(filename,'wb') do |f|
f.write(data.read)
end
rescue
@interface.set('log:attachstate', "saving stringio #{filename} failed (#{$!})")
else
@interface.set('log:attachstate', "stringio #{filename} has been saved")
end
else
@interface.set('log:attachstate', "unknown attachment class #{data.class.to_s}")
end
rescue
begin File.delete(filename) ; rescue ; end
else
begin File.delete(filename) if FileTest.size(filename) == 0 ; rescue ; end
end
return File.basename(filename)
end
end
# configuration
class WWW
def interface_base_name(str)
str.sub(/\.(pdf|htm|html)$/, '')
end
def located_interface_file(filename)
['configurations', 'runners', 'scripts'].each do |tag|
datafile = File.join(@interface.get("path:#{tag}"),filename)
if FileTest.file?(datafile+'.encrypted') then
return datafile + '.encrypted'
elsif FileTest.file?(datafile) then
return datafile
end
end
return nil
end
def load_interface_file(filename=@@data_file)
reset_session() # no save yet
if datafile = located_interface_file(filename) then
nestedfiles = Array.new
begin
data = IO.read(datafile) || ''
unless data.empty? then
loop do # we need to load them recursively
done = false
data.gsub!(/^include\s*:\s*(.*?)\s*$/) do
includedname, done = $1, true
if nestedname = located_interface_file(includedname) then
begin
str = ("\n" + IO.read(nestedname) + "\n") || ''
rescue
nestedfiles << File.basename('-'+includedname)
''
else
nestedfiles << File.basename('+'+includedname)
str
end
else
nestedfiles << File.basename('-'+includedname)
''
end
end
break unless done
end
end
@interface.set('log:configurationfile', datafile + ' [' + nestedfiles.join(' ') + ']')
return data
rescue
end
end
@interface.set('log:configurationfile', filename + ' [not loaded]')
return nil
end
def fetch_session_interface_variables(data)
data.scan(/^variable\s*:\s*(.*?)\s*\=\s*(.*?)\s*$/) do
@interface.set($1, $2)
end
return true
end
def fetch_session_project_list(data)
projectlist, permitted = Array.new, false
data.scan(/^user\s*:\s*(.*?)\s*\,\s*(.*?)\s*\=\s*(.*?)\s*\,\s*(.*?)\s*$/) do
domain, username, password, projects = $1, $2, $3, $4
if @session.match?('domain',domain) && @session.match?('username',username) then
if same_passwords(password) then
projectlist, permitted = @interface.resolved(projects).split(@@re_bar), true
break
end
end
end
if permitted then
@interface.set('log:projectlist', '['+projectlist.join(' ')+']')
if projectlist.length == 0 then
return nil
else
return projectlist
end
else
@interface.set('log:projectlist', '[no projects]')
return nil
end
end
def fetch_session_command(data)
data.scan(/^process\s*:\s*(.*?)\s*\,\s*(.*?)\s*\=\s*(.*?)\s*$/) do
domain, process, command = $1, $2, $3
if @session.match?('domain',domain) && @session.match?('process',process) then
@session.set('command', @interface.resolved(command))
end
end
return @session.get('command')
end
def fetch_session_settings(data)
data.scan(/^setting\s*:\s*(.*?)\s*\,\s*(.*?)\s*\,\s*(.*?)\s*\=\s*(.*?)\s*$/) do
domain, process, variable, value = $1, $2, $3, $4
if @session.match?('domain',domain) && @session.match?('process',process) then
@interface.set(variable,value)
end
end
end
def get_command(action)
# @session.set('action', action)
# if @session.get('process') == 'none' then
# @interface.set('log:child','yes')
# @session.set('process', action)
# end
if data = load_interface_file() then
fetch_session_interface_variables(data)
if projectlist = fetch_session_project_list(data) then
data.scan(/^project\s*:\s*(.*?)\s*\,\s*(.*?)\s*\=\s*(.*?)\s*,\s*(.*?)\s*,\s*(.*?)\s*$/) do
domain, project, gui, path, process = $1, $2, $3, $4, $5
if @session.match?('domain',domain) then
if @session.match?('project',project) then
if projectlist.include?(project) then
@session.set('process', @interface.resolved(process))
# break # no, else we end up in the parent (e.g. examplap instead of impose)
end
elsif ! action.empty? && project == action then
if projectlist.include?(action) then
@session.set('process', @interface.resolved(process))
# break # no, else we end up in the parent (e.g. examplap instead of impose)
end
end
end
end
fetch_session_command(data)
fetch_session_settings(data)
end
end
return ! @session.nothing?('command')
end
def get_file(filename)
@session.set('filename', filename)
if data = load_interface_file() then
fetch_session_interface_variables(data)
if projectlist = fetch_session_project_list(data) then
data.scan(/^project\s*:\s*(.*?)\s*\,\s*(.*?)\s*\=\s*(.*?)\s*,\s*(.*?)\s*,\s*(.*?)\s*$/) do
domain, project, gui, path, process = $1, $2, $3, $4, $5
if @session.match?('domain',domain) then
guilist = @interface.resolved(gui).split(@@re_bar)
guilist.each do |g|
if /#{filename}$/ =~ g then
@session.set('gui', File.expand_path(@interface.resolved(g)))
@session.set('path', File.expand_path(@interface.resolved(path)))
@session.set('process', process)
break # take first matching interface
end
end
end
end
end
end
return ! (@session.nothing?('gui') && @session.nothing?('path') && @session.nothing?('process'))
end
def get_path(url='')
if data = load_interface_file() then
fetch_session_interface_variables(data)
if projectlist = fetch_session_project_list(data) then
data.scan(/^project\s*:\s*(.*?)\s*\,\s*(.*?)\s*\=\s*(.*?)\s*,\s*(.*?)\s*,\s*(.*?)\s*$/) do
domain, project, gui, path, process = $1, $2, $3, $4, $5
if @session.match?('domain',domain) && @session.match?('project',project) then
@session.set('url', url)
@session.set('gui', '')
@session.set('path', File.expand_path(@interface.resolved(path)))
@session.set('process', '')
end
end
end
end
return ! @session.nothing?('path')
end
def get_gui()
if data = load_interface_file() then
fetch_session_interface_variables(data)
if projectlist = fetch_session_project_list(data) then
data.scan(/^project\s*:\s*(.*?)\s*\,\s*(.*?)\s*\=\s*(.*?)\s*,\s*(.*?)\s*,\s*(.*?)\s*$/) do
domain, project, gui, path, process = $1, $2, $3, $4, $5
if @session.match?('domain',domain) && @session.match?('project',project) && projectlist.include?(project) then
@session.set('gui', File.expand_path(@interface.resolved(gui)))
@session.set('path', File.expand_path(@interface.resolved(path)))
@session.set('process', process) unless process == 'none'
break # take first matching interface
end
end
data.scan(/^admin\s*:\s*(.*?)\s*\,\s*(.*?)\s*\=\s*(.*?)\s*\,\s*(.*?)\s*$/) do
domain, project, task, option = $1, $2, $3, $4
if @session.match?('domain',domain) && @session.match?('project',project) && projectlist.include?(project) then
@session.set('task', task)
@session.set('option', option)
break # take first matching task
end
end
end
end
return ! (@session.nothing?('gui') && @session.nothing?('path') && @session.nothing?('process'))
end
def get_cfg()
if data = load_interface_file() then
fetch_session_interface_variables(data)
end
end
end
class WWW
def send_reply(logdata='')
if @interface.true?('trace:run') then
send_result(logdata)
else
dir, tmp = dirname, tmp_path(dirname)
case @session.get('status')
when 'running: finished' then
resultname, replyname = 'result.pdf', 'reply.exa'
replyfile = File.join(tmp,replyname)
if FileTest.file?(replyfile) then
begin
data = IO.read(replyfile)
resultname = if data =~ /<exa:output>(.*?)<\/exa:output>/ then $1 else resultname end
rescue
plaintext(exareply('error in reply'))
return
end
end
resultfile = File.join(tmp,resultname)
if FileTest.file?(resultfile) then
if indirect?(resultfile) then
begin
File.makedirs(File.join(cache_root,dir))
FileUtils::mv(resultfile,File.join(cache_root,dir,resultname))
rescue
plaintext(exareply('unable to access cache'))
else
plaintext(exareply('big file', "cache/#{dir}/#{resultname}", "#{File.size?(resultfile)}"))
end
else
send_file(resultfile)
end
else
plaintext(exareply('no result'))
end
else # background, running, aborted
plaintext(exareply(@session.get('status')))
end
end
end
def send_url(fullname)
dir, tmp = dirname, tmp_path(dirname)
resultname, replyname = 'result.pdf', 'reply.exa'
replyfile = File.join(tmp,replyname)
resultfile = File.join(tmp,resultname)
targetname = File.join(cache_root,dir,resultname)
# make sure that there is no target left in case of an
# error; needed in case of given session name
if FileTest.directory?(File.join(cache_root,dir)) then
File.delete(targetname) rescue false
end
# now try to locate the file
if FileTest.file?(fullname) then
if indirect?(fullname) then
begin
# check if directory exists and (if so) delete left overs
File.makedirs(File.join(cache_root,dir))
File.delete(targetname) rescue false
File.symlink(fullname,targetname) rescue message('Status',$!)
unless FileTest.file?(targetname) then
FileUtils::cp(fullname,targetname) rescue false
end
rescue
plaintext(exareply('unable to access cache'))
else
plaintext(exareply('big file', "cache/#{dir}/#{resultname}", "#{File.size?(fullname)}"))
end
else
send_file(fullname)
end
else
message('Status', 'The file is not found')
end
end
def send_result(logdata='')
check_template_file('exalogin','exalogin-template.htm')
dir, tmp = dirname, tmp_path(dirname)
resultname, replyname, logname = 'result.pdf', 'reply.exa', 'log.htm'
case @session.get('status')
when 'running: background' then
if st = @session.get('starttime') then # fuzzy
st = Time.now.to_i if st.empty?
if (Time.now.to_i - st.to_i) > @interface.get('process:timeout').to_i then
message('Status', 'Your request has been aborted (timeout)',true)
else
message('Status', 'Your request is queued',true,5,'exastatus')
end
end
when 'running: busy' then
if st = @session.get('starttime') then # fuzzy
st = Time.now.to_i if st.empty?
if (Time.now.to_i - st.to_i) > @interface.get('process:timeout').to_i then
message('Status', 'Your request has been aborted (timeout)',true)
else
message('Status', 'Your request is being processed',true,5,'exastatus')
end
end
when 'running: aborted' then
message('Status', 'Your request has been aborted (timeout)',true)
when 'running: finished' then
if @interface.true?('trace:run') then
logfile = File.join(tmp,logname)
begin
if f = File.open(logname,'w') then
if logdata.empty? then
begin
logdata = IO.read('www-watch.out')
rescue
logdata = 'no log data'
end
end
f << filled_template('Log',"<pre>#{CGI::escapeHTML(logdata)}</pre>")
f.close
end
rescue
message('Error', '')
end
if FileTest.file?(logfile) then
begin
File.makedirs(File.join(cache_root,dir))
FileUtils::mv(logfile,File.join(cache_root,dir,logname))
rescue
logdata = "<br/><br/>unable to access cache</a>"
else
logdata = "<br/><br/><a href='/cache/#{dir}/#{logname}'>#{logname}</a>"
end
else
logdata = ''
end
else
logdata = ''
end
# todo: generate reply.exa if no reply
replyfile = File.join(tmp,replyname)
if FileTest.file?(replyfile) then
begin
data = IO.read(replyfile)
resultname = if data =~ /<exa:output>(.*?)<\/exa:output>/ then $1 else resultname end
rescue
message('Error','There is a problem in handling this request (invalid reply).')
return
end
end
resultfile = File.join(tmp,resultname)
if FileTest.file?(resultfile) then
if indirect?(resultfile) then
begin
File.makedirs(File.join(cache_root,dir))
FileUtils::mv(resultfile,File.join(cache_root,dir,resultname))
rescue
str = "<br/><br/>unable to access cache</a>"
else
str = "<br/><br/><a href='/cache/#{dir}/#{resultname}'>#{resultname}</a> (#{File.size?(resultname)} bytes)"
end
message('Result', 'You can pick up the result here:' + str + logdata)
else
send_file(resultfile)
end
else
message('Error', 'There is a problem in handling this request (no result file).' + logdata)
end
end
end
end
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