mdw@git.distorted.org.uk Git - chopwood/blob - cmd-cgi.py

   1 ### -*-python-*-
   2 ###
   3 ### CGI commands
   4 ###
   5 ### (c) 2013 Mark Wooding
   6 ###
   7
   8 ###----- Licensing notice ---------------------------------------------------
   9 ###
  10 ### This file is part of Chopwood: a password-changing service.
  11 ###
  12 ### Chopwood is free software; you can redistribute it and/or modify
  13 ### it under the terms of the GNU Affero General Public License as
  14 ### published by the Free Software Foundation; either version 3 of the
  15 ### License, or (at your option) any later version.
  16 ###
  17 ### Chopwood is distributed in the hope that it will be useful,
  18 ### but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ### GNU Affero General Public License for more details.
  21 ###
  22 ### You should have received a copy of the GNU Affero General Public
  23 ### License along with Chopwood; if not, see
  24 ### <http://www.gnu.org/licenses/>.
  25
  26 from __future__ import with_statement
  27
  28 import errno as E
  29 import os as OS
  30
  31 from auto import PACKAGE, VERSION
  32 import agpl as AGPL
  33 import cgi as CGI
  34 import cmdutil as CU
  35 import dbmaint as D
  36 import httpauth as HA
  37 import operation as OP
  38 import output as O; OUT = O.OUT; PRINT = O.PRINT
  39 import service as S
  40 import subcommand as SC
  41 import util as U
  42
  43 ###--------------------------------------------------------------------------
  44 ### Utilities.
  45
  46 def operate(what, op, services, *args, **kw):
  47   accts = CU.resolve_accounts(CU.USER, services)
  48   o, ii, rq, ops = OP.operate(op, accts, *args, **kw)
  49   CGI.page('operate.fhtml',
  50            header = dict(pragma = 'no-cache', cache_control = 'no-cache'),
  51            title = 'Chopwood: %s' % what,
  52            what = what,
  53            outcome = o, info = ii, results = ops)
  54
  55 ###--------------------------------------------------------------------------
  56 ### Commands.
  57
  58 @CGI.subcommand('list', ['cgi-query'], 'List available accounts')
  59 def cmd_list_cgi():
  60   CGI.page('list.fhtml',
  61            title = 'Chopwood: accounts list',
  62            accts = CU.list_accounts(CU.USER),
  63            nonce = HA.NONCE)
  64
  65 @CGI.subcommand(
  66   'set', ['cgi'], 'Set password for a collection of services.',
  67   params = [SC.Arg('first'), SC.Arg('second')],
  68   rparam = SC.Arg('services'))
  69 def cmd_set_cgi(first, second, services = []):
  70   if first != second: raise U.ExpectedError, (400, "Passwords don't match")
  71   operate('set passwords', 'set', services, first)
  72
  73 @CGI.subcommand(
  74   'reset', ['cgi'],
  75   'Reset passwords for a collection of services.',
  76   rparam = SC.Arg('services'))
  77 def cmd_reset_cgi(services = []):
  78   operate('reset passwords', 'reset', services)
  79
  80 @CGI.subcommand(
  81   'clear', ['cgi'],
  82   'Clear passwords for a collection of services.',
  83   rparam = SC.Arg('services'))
  84 def cmd_clear_cgi(services = []):
  85   operate('clear passwords', 'clear', services)
  86
  87 @CGI.subcommand(
  88   'fail', ['cgi-noauth'],
  89   'Raise an exception, to test the error reporting machinery.',
  90   opts = [SC.Opt('partial', '-p', '--partial',
  91                  'Raise exception after producing partial output.')])
  92 def cmd_fail_cgi(partial = False):
  93   if partial:
  94     OUT.header(content_type = 'text/html')
  95     PRINT("""\
  96 <html>
  97 <head><title>Chopwood: filler text</title></head>
  98 <body>
  99 <h1>Failure expected soon
 100 <p>This is some normal output which will be rudely interrupted.""")
 101   raise Exception, 'You asked for this.'
 102
 103 ###--------------------------------------------------------------------------
 104 ### Static content.
 105
 106 ## A map of file names to content objects.  See below.
 107 CONTENT = {}
 108
 109 class PlainOutput (O.FileOutput):
 110   def header(me, **kw):
 111     pass
 112
 113 class StaticContent (object):
 114   def __init__(me, type):
 115     me._type = type
 116   def emit(me):
 117     OUT.header(content_type = me._type)
 118     me._emit()
 119   def _write(me, dest):
 120     with open(dest, 'w') as f:
 121       with OUT.redirect_to(PlainOutput(f)):
 122         me.emit()
 123   def write(me, dest):
 124     new = dest + '.new'
 125     try: OS.unlink(new)
 126     except OSError, e:
 127       if e.errno != E.ENOENT: raise
 128     me._write(new)
 129     OS.rename(new, dest)
 130
 131 class TemplateContent (StaticContent):
 132   def __init__(me, template, *args, **kw):
 133     super(TemplateContent, me).__init__(*args, **kw)
 134     me._template = template
 135   def _emit(me):
 136     CGI.format_tmpl(CGI.TMPL[me._template])
 137
 138 class HTMLContent (StaticContent):
 139   def __init__(me, title, template, type = 'text/html', *args, **kw):
 140     super(HTMLContent, me).__init__(type = type, *args, **kw)
 141     me._template = template
 142     me._title = title
 143   def emit(me):
 144     CGI.page(me._template, title = me._title)
 145
 146 CONTENT.update({
 147   'chpwd.css': TemplateContent(template = 'chpwd.css',
 148                                type = 'text/css'),
 149   'chpwd.js': TemplateContent(template = 'chpwd.js',
 150                               type = 'text/javascript'),
 151   'about.html': HTMLContent('Chopwood: about this program',
 152                             template = 'about.fhtml'),
 153   'cookies.html': HTMLContent('Chopwood: use of cookies',
 154                               template = 'cookies.fhtml')
 155 })
 156
 157 @CGI.subcommand(
 158   'static', ['cgi-noauth'], 'Output a static file.',
 159   rparam = SC.Arg('path'))
 160 def cmd_static_cgi(path):
 161   name = '/'.join(path)
 162   try: content = CONTENT[name]
 163   except KeyError: raise U.ExpectedError, (404, "Unknown file `%s'" % name)
 164   content.emit()
 165
 166 @SC.subcommand(
 167   'static', ['admin'], 'Write the static files to DIR.',
 168   params = [SC.Arg('dir')])
 169 def cmd_static_admin(dir):
 170   try: OS.makedirs(dir, 0777)
 171   except OSError, e:
 172     if e.errno != E.EEXIST: raise
 173   for f, c in CONTENT.iteritems():
 174     c.write(OS.path.join(dir, f))
 175
 176 TARBALL = '%s-%s.tar.gz' % (PACKAGE, VERSION)
 177 @CGI.subcommand(TARBALL, ['cgi-noauth'], """\
 178 Download source code (in `.tar.gz' format).""")
 179 def cmd_source_cgi():
 180   OUT.header(content_type = 'application/octet-stream')
 181   AGPL.source(OUT)
 182
 183 @CGI.subcommand('source', ['cgi-noauth'], """\
 184 Redirect to the source code tarball (so that it's correctly named).""")
 185 def cmd_sourceredirect_cgi():
 186   CGI.redirect(CGI.action(TARBALL))
 187
 188 ###----- That's all, folks --------------------------------------------------