chiark / gitweb /
cmd-cgi.py: Don't allow caching of the `list' page.
[chopwood] / cmd-cgi.py
CommitLineData
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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
26from __future__ import with_statement
27
28import errno as E
29import os as OS
30
31from auto import PACKAGE, VERSION
32import agpl as AGPL
33import cgi as CGI
34import cmdutil as CU
35import dbmaint as D
36import httpauth as HA
37import operation as OP
38import output as O; OUT = O.OUT; PRINT = O.PRINT
39import service as S
40import subcommand as SC
41import util as U
42
43###--------------------------------------------------------------------------
44### Utilities.
45
46def 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')
59def cmd_list_cgi():
60 CGI.page('list.fhtml',
6a749ccf 61 header = dict(pragma = 'no-cache', cache_control = 'no-cache'),
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62 title = 'Chopwood: accounts list',
63 accts = CU.list_accounts(CU.USER),
64 nonce = HA.NONCE)
65
66@CGI.subcommand(
67 'set', ['cgi'], 'Set password for a collection of services.',
68 params = [SC.Arg('first'), SC.Arg('second')],
69 rparam = SC.Arg('services'))
70def cmd_set_cgi(first, second, services = []):
71 if first != second: raise U.ExpectedError, (400, "Passwords don't match")
72 operate('set passwords', 'set', services, first)
73
74@CGI.subcommand(
75 'reset', ['cgi'],
76 'Reset passwords for a collection of services.',
77 rparam = SC.Arg('services'))
78def cmd_reset_cgi(services = []):
79 operate('reset passwords', 'reset', services)
80
81@CGI.subcommand(
82 'clear', ['cgi'],
83 'Clear passwords for a collection of services.',
84 rparam = SC.Arg('services'))
85def cmd_clear_cgi(services = []):
86 operate('clear passwords', 'clear', services)
87
88@CGI.subcommand(
89 'fail', ['cgi-noauth'],
90 'Raise an exception, to test the error reporting machinery.',
91 opts = [SC.Opt('partial', '-p', '--partial',
92 'Raise exception after producing partial output.')])
93def cmd_fail_cgi(partial = False):
94 if partial:
95 OUT.header(content_type = 'text/html')
96 PRINT("""\
97<html>
98<head><title>Chopwood: filler text</title></head>
99<body>
100<h1>Failure expected soon
101<p>This is some normal output which will be rudely interrupted.""")
102 raise Exception, 'You asked for this.'
103
104###--------------------------------------------------------------------------
105### Static content.
106
107## A map of file names to content objects. See below.
108CONTENT = {}
109
110class PlainOutput (O.FileOutput):
111 def header(me, **kw):
112 pass
113
114class StaticContent (object):
115 def __init__(me, type):
116 me._type = type
117 def emit(me):
118 OUT.header(content_type = me._type)
119 me._emit()
120 def _write(me, dest):
121 with open(dest, 'w') as f:
122 with OUT.redirect_to(PlainOutput(f)):
123 me.emit()
124 def write(me, dest):
125 new = dest + '.new'
126 try: OS.unlink(new)
127 except OSError, e:
128 if e.errno != E.ENOENT: raise
129 me._write(new)
130 OS.rename(new, dest)
131
132class TemplateContent (StaticContent):
133 def __init__(me, template, *args, **kw):
134 super(TemplateContent, me).__init__(*args, **kw)
135 me._template = template
136 def _emit(me):
137 CGI.format_tmpl(CGI.TMPL[me._template])
138
139class HTMLContent (StaticContent):
140 def __init__(me, title, template, type = 'text/html', *args, **kw):
141 super(HTMLContent, me).__init__(type = type, *args, **kw)
142 me._template = template
143 me._title = title
144 def emit(me):
145 CGI.page(me._template, title = me._title)
146
147CONTENT.update({
148 'chpwd.css': TemplateContent(template = 'chpwd.css',
149 type = 'text/css'),
150 'chpwd.js': TemplateContent(template = 'chpwd.js',
151 type = 'text/javascript'),
152 'about.html': HTMLContent('Chopwood: about this program',
153 template = 'about.fhtml'),
154 'cookies.html': HTMLContent('Chopwood: use of cookies',
155 template = 'cookies.fhtml')
156})
157
158@CGI.subcommand(
159 'static', ['cgi-noauth'], 'Output a static file.',
160 rparam = SC.Arg('path'))
161def cmd_static_cgi(path):
162 name = '/'.join(path)
163 try: content = CONTENT[name]
164 except KeyError: raise U.ExpectedError, (404, "Unknown file `%s'" % name)
165 content.emit()
166
167@SC.subcommand(
168 'static', ['admin'], 'Write the static files to DIR.',
169 params = [SC.Arg('dir')])
170def cmd_static_admin(dir):
171 try: OS.makedirs(dir, 0777)
172 except OSError, e:
173 if e.errno != E.EEXIST: raise
174 for f, c in CONTENT.iteritems():
175 c.write(OS.path.join(dir, f))
176
177TARBALL = '%s-%s.tar.gz' % (PACKAGE, VERSION)
178@CGI.subcommand(TARBALL, ['cgi-noauth'], """\
179Download source code (in `.tar.gz' format).""")
180def cmd_source_cgi():
181 OUT.header(content_type = 'application/octet-stream')
182 AGPL.source(OUT)
183
184@CGI.subcommand('source', ['cgi-noauth'], """\
d674bfda 185Redirect to the source code tarball (so that it's correctly named).""")
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186def cmd_sourceredirect_cgi():
187 CGI.redirect(CGI.action(TARBALL))
188
189###----- That's all, folks --------------------------------------------------