2 # -*- coding: utf-8 -*-
4 # Copyright 1999, 2000 Martin Pool <mbp@humbug.org.au>
5 # Copyright 2002 Gerardo Poggiali
6 # Copyright 2007, 2008, 2009 Bernie Innocenti <bernie@codewiz.org>
8 # This program is free software: you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation, either version 3 of the License, or
11 # (at your option) any later version. You should have received a copy
12 # of the GNU General Public License along with this program.
13 # If not, see <http://www.gnu.org/licenses/>.
15 __version__ = '4.0-' + '$Id$'[4:11]
17 from time import clock
21 import cgi, sys, os, re, errno, stat, glob
23 image_ext = 'png|gif|jpg|jpeg|bmp|ico'
24 video_ext = "ogg|ogv|oga" # Not supported by Firefox 3.5: mkv|mpg|mpeg|mp4|avi|asf|flv|wmv|qt
25 image_re = re.compile(r".*\.(" + image_ext + "|" + video_ext + ")", re.IGNORECASE)
26 video_re = re.compile(r".*\.(" + video_ext + ")", re.IGNORECASE)
27 # FIXME: we accept stuff like foo/../bar and we shouldn't
28 file_re = re.compile(r"([A-Za-z0-9_\-][A-Za-z0-9_\.\-/]*)")
29 url_re = re.compile(r"[a-z]{3,8}://[^\s'\"]+\S")
30 ext_re = re.compile(r"\.([^\./]+)$")
32 # CGI stuff ---------------------------------------------------------
33 def config_get(key, default=None):
34 return globals().get(key, default)
37 return os.environ.get('SCRIPT_NAME', '')
40 path_info = os.environ.get('PATH_INFO', '')
41 if len(path_info) and path_info[0] == '/':
42 return path_info[1:] or 'FrontPage'
44 return os.environ.get('QUERY_STRING', '') or 'FrontPage'
46 def privileged_path():
47 return config_get('privileged_url') or script_name()
50 user = os.environ.get('REMOTE_USER', '')
51 if user is None or user == '' or user == 'anonymous':
52 user = 'AnonymousCoward'
56 return os.environ.get('REMOTE_ADDR', '')
58 def get_hostname(addr):
60 from socket import gethostbyaddr
61 return gethostbyaddr(addr)[0] + ' (' + addr + ')'
65 def is_external_url(pathname):
66 return (url_re.match(pathname) or pathname.startswith('/'))
68 def relative_url(pathname, privileged=False):
69 if not is_external_url(pathname):
71 url = privileged_path()
74 pathname = url + '/' + pathname
75 return cgi.escape(pathname, quote=True)
78 return re.sub(' ', '-', re.sub('[^a-z0-9_ ]', '', s.lower()).strip())
81 return re.sub(r'(?:.*[/:]|)([^:/\.]+)(?:\.[^/:]+|)$', r'\1', s.replace('_', ' '))
83 # Split arg lists like "blah|blah blah| width=100 | align = center",
84 # return a list containing anonymous arguments and a map containing the named arguments
88 for arg in s.strip('<[{}]>').split('|'):
89 m = re.match('\s*(\w+)\s*=\s*(.+)\s*', arg)
91 kvargs[m.group(1)] = m.group(2)
93 args.append(arg.strip())
98 for k, v in kvargs.items():
99 argv.append(k + '=' + v)
101 return '?' + '&'.join(argv)
104 # Formatting stuff --------------------------------------------------
105 def emit_header(mime_type="text/html"):
106 print("Content-type: " + mime_type + "; charset=utf-8\n")
108 def send_guru(msg_text, msg_type):
109 if not msg_text: return
110 print('<pre id="guru" onclick="this.style.display = \'none\'" class="' + msg_type + '">')
111 if msg_type == 'error':
112 print(' Software Failure. Press left mouse button to continue.\n')
113 print(cgi.escape(msg_text))
114 if msg_type == 'error':
115 print '\n Guru Meditation #DEADBEEF.ABADC0DE'
116 print('</pre><script language="JavaScript" type="text/javascript" src="%s" defer="defer"></script>' \
117 % relative_url('sys/GuruMeditation.js'))
119 def send_title(name, text="Limbo", msg_text=None, msg_type='error', writable=False):
121 if title_done: return
125 print('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"')
126 print(' "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">')
127 print('<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">')
129 print("<head><title>%s: %s</title>" % (config_get('site_name', "Unconfigured Wiki"), text))
130 print(' <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=utf-8" />')
132 print(' <meta name="robots" content="noindex,nofollow" />')
134 for http_equiv, content in config_get('meta_urls', {}):
135 print(' <meta http-equiv="%s" content="%s" />' % (http_equiv, relative_url(content)))
137 for link in config_get('link_urls', {}):
139 print(' <link rel="%s" href="%s" />' % (rel, relative_url(href)))
141 editable = name and writable and config_get('privileged_url') is not None
143 print(' <link rel="alternate" type="application/x-wiki" title="Edit this page" href="%s" />' \
144 % (privileged_path() + '?a=edit&q=' + name))
146 history = config_get('history_url')
147 if history is not None:
148 print(' <link rel="alternate" type="application/rss+xml" title="RSS" href="%s" />' \
149 % relative_url(history + '?a=rss'))
155 print('<body ondblclick="location.href=\'' + privileged_path() + '?a=edit&q=' + name + '\'">')
160 send_guru(msg_text, msg_type)
163 print('<div class="nav">')
164 print link_tag('FrontPage', config_get('site_icon', 'Home'), cssclass='navlink')
166 print(' <b>' + link_tag('?fullsearch=' + name, text, cssclass='navlink') + '</b> ')
168 print(' <b>' + text + '</b> ')
169 print(' | ' + link_tag('FindPage', 'Find Page', cssclass='navlink'))
171 print(' | <a href="' + relative_url(history) + '" class="navlink">Recent Changes</a>')
173 print(' | <a href="' + relative_url(history + '?a=history;f=' + name) + '" class="navlink">Page History</a>')
176 print(' | ' + link_tag(name + '?a=raw', 'Raw Text', cssclass='navlink'))
177 if config_get('privileged_url') is not None:
179 print(' | ' + link_tag('?a=edit&q=' + name, 'Edit', cssclass='navlink', privileged=True))
181 print(' | ' + link_tag(name, 'Login', cssclass='navlink', privileged=True))
184 print(' | <i>Immutable Page</i>')
187 if user != 'AnonymousCoward':
188 print(' | <span class="login"><i><b>' + link_tag('User/' + user, user) + '</b></i></span>')
190 print('<hr /></div>')
192 def send_httperror(status="403 Not Found", query=""):
193 print("Status: %s" % status)
194 send_title(None, msg_text=("%s: on query '%s'" % (status, query)))
197 def link_tag(dest, text=None, privileged=False, **kvargs):
199 text = humanlink(dest)
200 elif image_re.match(text):
201 text = '<img border="0" src="' + relative_url(text) + '" alt="' + text + '" />'
203 link_class = kvargs.get('class', kvargs.get('cssclass', None))
205 if is_external_url(dest):
206 link_class = 'external'
207 elif file_re.match(dest) and Page(dest).exists():
208 link_class = 'wikilink'
210 text = config_get('nonexist_pfx', '') + text
211 link_class = 'nonexistent'
213 # Prevent crawlers from following links potentially added by spammers or to generated pages
215 if link_class == 'external' or link_class == 'navlink':
216 nofollow = 'rel="nofollow" '
218 return '<a class="%s" %shref="%s">%s</a>' % (link_class, nofollow, relative_url(dest, privileged=privileged), text)
220 def link_inline(name, descr=None, kvargs={}):
221 if not descr: descr = humanlink(name)
222 url = relative_url(name)
223 if video_re.match(name):
224 return '<video controls="1" src="%s">Your browser does not support HTML5 video</video>' % url
225 elif image_re.match(name):
226 return '<a href="%s"><img border="0" src="%s" alt="%s" /></a>' % (url, url + url_args(kvargs), descr)
227 elif file_re.match(name) and not ext_re.search(name): # FIXME: this guesses a wiki page
228 Page(name).send_naked(kvargs) # FIXME: we should return the page as a string rather than print it
231 return '<iframe width="100%%" scrolling="auto" frameborder="0" src="%s"><a href="%s">%s</a></iframe>' \
234 def link_inline_glob(pattern, descr=None, kvargs={}):
236 for name in glob.glob(pattern):
237 s += link_inline(name, descr, kvargs)
240 # Search ---------------------------------------------------
242 def print_search_stats(hits, searched):
243 print("<p>%d hits out of %d pages searched.</p>" % (hits, searched))
245 def handle_fullsearch(query, form):
246 needle = form['q'].value
247 send_title(None, 'Full text search for "' + needle + '"')
249 needle_re = re.compile(needle, re.IGNORECASE)
251 all_pages = page_list()
252 for page_name in all_pages:
253 body = Page(page_name).get_raw_body()
254 count = len(needle_re.findall(body))
256 hits.append((count, page_name))
258 # The default comparison for tuples compares elements in order,
259 # so this sorts by number of hits
264 for (count, page_name) in hits:
265 print('<li><p>' + link_tag(page_name))
266 print(' . . . . ' + `count`)
267 print(['match', 'matches'][count != 1])
271 print_search_stats(len(hits), len(all_pages))
273 def handle_titlesearch(query, form):
274 needle = form['q'].value
275 send_title(None, 'Title search for "' + needle + '"')
277 needle_re = re.compile(needle, re.IGNORECASE)
278 all_pages = page_list()
279 hits = list(filter(needle_re.search, all_pages))
282 for filename in hits:
283 print('<li><p>' + link_tag(filename) + "</p></li>")
286 print_search_stats(len(hits), len(all_pages))
288 def handle_raw(pagename, form):
289 if not file_re.match(pagename):
290 send_httperror("403 Forbidden", pagename)
293 Page(pagename).send_raw()
295 def handle_edit(pagename, form):
296 if not file_re.match(pagename):
297 send_httperror("403 Forbidden", pagename)
300 pg = Page(form['q'].value)
302 if form['file'].value:
303 pg.save(form['file'].file.read(), form['changelog'].value)
305 pg.save(form['savetext'].value.replace('\r\n', '\n'), form['changelog'].value)
307 elif 'cancel' in form:
308 pg.msg_text = 'Editing canceled'
309 pg.msg_type = 'notice'
311 else: # preview or edit
313 if 'preview' in form:
314 text = form['savetext'].value
317 def handle_get(pagename, form):
318 if file_re.match(pagename):
319 # FIMXE: this is all bullshit, MimeTypes bases its guess on the extension!
320 from mimetypes import MimeTypes
321 mimetype, encoding = MimeTypes().guess_type(pagename)
323 Page(pagename).send_raw(mimetype=mimetype, args=form)
325 Page(pagename).format()
327 send_httperror("403 Forbidden", pagename)
329 # Used by sys/macros/WordIndex and sys/macros/TitleIndex
330 def make_index_key():
331 links = ['<a href="#%s">%s</a>' % (ch, ch) for ch in 'abcdefghijklmnopqrstuvwxyz']
332 return '<p style="text-align: center">' + ' | '.join(links) + '</p>'
334 def page_list(dirname=None, search_re=None):
335 if search_re is None:
336 # FIXME: WikiWord is too restrictive now!
337 search_re = re.compile(r"^\b((([A-Z][a-z0-9]+){2,}/)*([A-Z][a-z0-9]+){2,})\b$")
338 return sorted(filter(search_re.match, os.listdir(dirname or '.')))
340 def send_footer(mod_string=None):
341 if config_get('debug_cgi', False):
342 cgi.print_arguments()
345 link_inline("sys/footer", kvargs = { 'LAST_MODIFIED': mod_string })
346 print("</body></html>")
348 def _macro_ELAPSED_TIME(*args, **kvargs):
349 return "%03f" % (clock() - start_time)
351 def _macro_VERSION(*args, **kvargs):
355 """Object that turns Wiki markup into HTML.
357 All formatting commands can be parsed one line at a time, though
358 some state is carried over between lines.
360 def __init__(self, raw, kvargs=None):
362 self.kvargs = kvargs or {}
364 self.in_pre = self.in_html = self.in_table = self.in_li = False
365 self.in_header = True
366 self.list_indents = []
374 "--": ["del", False],
375 "^^": ["sup", False],
376 ",,": ["sub", False],
377 "''": ["em", False], # LEGACY
378 "'''": ["b", False], # LEGACY
379 "``": ["tt", False], # LEGACY
382 def _b_repl(self, word):
383 style = self.styles[word]
384 style[1] = not style[1]
385 return ['</', '<'][style[1]] + style[0] + '>'
387 def _glyph_repl(self, word):
390 def _tit_repl(self, word):
392 result = '</h%d><p>\n' % self.h_level
395 self.h_level = len(word) - 1
396 link = permalink(self.line)
397 result = '\n</p><h%d id="%s"><a class="heading" href="#%s">¶</a> ' % (self.h_level, link, link)
400 def _br_repl(self, word):
403 def _rule_repl(self, word):
404 return self._undent() + '\n<hr size="%d" noshade="noshade" />\n' % (len(word) - 2)
406 def _macro_repl(self, word):
408 args, kvargs = parse_args(word)
409 if args[0] in self.kvargs:
410 return self.kvargs[args[0]]
411 macro = globals().get('_macro_' + args[0])
413 exec(open("sys/macros/" + args[0] + ".py").read(), globals())
414 macro = globals().get('_macro_' + args[0])
415 return macro(*args, **kvargs)
417 msg = cgi.escape(word) + ": " + cgi.escape(e.message)
419 msg = '<strong class="error">' + msg + '</strong>'
422 def _hurl_repl(self, word):
423 args, kvargs = parse_args(word)
424 return link_tag(*args, **kvargs)
426 def _inl_repl(self, word):
427 args, kvargs = parse_args(word)
431 # This double div nonsense works around a limitation of the HTML block model
432 return '<div class="' + kvargs.get('class', 'thumb') + '">' \
433 + '<div class="innerthumb">' \
434 + link_inline_glob(name, descr, kvargs) \
435 + '<div class="caption">' + descr + '</div></div></div>'
437 return link_inline_glob(name, None, kvargs)
439 def _html_repl(self, word):
440 if not self.in_html and word.startswith('<div'): word = '</p>' + word
442 return word; # Pass through
444 def _htmle_repl(self, word):
446 if not self.in_html and word.startswith('</div'): word += '<p>'
447 return word; # Pass through
449 def _ent_repl(self, s):
451 return s; # Pass through
452 return {'&': '&',
456 def _img_repl(self, word): # LEGACY
457 return self._inl_repl('{{' + word + '}}')
459 def _word_repl(self, word): # LEGACY
460 if self.in_html: return word # pass through
461 return link_tag(word)
463 def _url_repl(self, word): # LEGACY
464 if self.in_html: return word # pass through
465 return link_tag(word)
467 def _email_repl(self, word): # LEGACY
468 if self.in_html: return word # pass through
469 return '<a href="mailto:%s">%s</a>' % (word, word)
471 def _li_repl(self, match):
478 def _pre_repl(self, word):
479 if word == '{{{' and not self.in_pre:
487 def _hi_repl(self, word):
488 return '<strong class="highlight ' + word + '">' + word + '</strong>'
490 def _tr_repl(self, word):
492 if not self.in_table:
495 out = '</p><table><tbody>\n'
497 out = out + '<tr class="' + ['even', 'odd'][self.tr_cnt % 2] + '">'
498 return out + ['<td>', '<th>'][word.strip() == '||=']
500 def _td_repl(self, word):
502 return ['</td><td>', '</th><th>'][word.strip() == '||=']
505 def _tre_repl(self, word):
507 return ['</td></tr>', '</th></tr>'][word.strip() == '||=']
510 def _indent_level(self):
511 return len(self.list_indents) and self.list_indents[-1]
513 def _indent_to(self, new_level):
514 if self._indent_level() == new_level:
517 while self._indent_level() > new_level:
518 del(self.list_indents[-1])
521 self.in_li = False # FIXME
523 while self._indent_level() < new_level:
524 self.list_indents.append(new_level)
531 res += '</ul>' * len(self.list_indents)
533 self.list_indents = []
536 def replace(self, match):
537 for rule, hit in list(match.groupdict().items()):
539 return getattr(self, '_' + rule + '_repl')(hit)
541 raise Exception("Can't handle match " + repr(match))
543 def print_html(self):
544 print('<div class="wiki"><p>')
546 scan_re = re.compile(r"""(?:
547 # Styles and formatting ("--" must cling to a word to disambiguate it from the dash)
548 (?P<b> \*\* | // | \#\# | __ | --\b | \b-- | \^\^ | ,, | ''' | '' | `` )
552 | (?P<hi> \b( FIXME | TODO | DONE )\b )
556 | (?P<macro> \<\<([^\s\|\>]+)(?:\s*\|\s*([^\>]+)|)\>\>)
557 | (?P<hurl> \[\[([^\s\|]+)(?:\s*\|\s*([^\]]+)|)\]\])
560 | (?P<html> <(br|hr|div|span|form|iframe|input|textarea|a|img|h[1-5])\b )
561 | (?P<htmle> ( /\s*> | </(br|hr|div|span|form|iframe|input|textarea|a|img|h[1-5])> ) )
564 # Auto links (LEGACY)
565 | (?P<img> \b[a-zA-Z0-9_/-]+\.(""" + image_ext + "|" + video_ext + r"""))
566 | (?P<word> \b(?:[A-Z][a-z]+){2,}\b)
567 | (?P<url> (http|https|ftp|mailto)\:[^\s'\"]+\S)
568 | (?P<email> [-\w._+]+\@[\w.-]+)
570 # Lists, divs, spans and inline objects
571 | (?P<li> ^\s+[\*\#]\s+)
572 | (?P<pre> \{\{\{|\s*\}\}\})
573 | (?P<inl> \{\{([^\s\|]+)(?:\s*\|\s*([^\]]+)|)\}\})
576 | (?P<tr> ^\s*\|\|(=|)\s*)
577 | (?P<tre> \s*\|\|(=|)\s*$)
578 | (?P<td> \s*\|\|(=|)\s*)
580 # TODO: highlight search words (look at referrer)
582 pre_re = re.compile("""(?:
586 blank_re = re.compile(r"^\s*$")
587 indent_re = re.compile(r"^\s*")
588 tr_re = re.compile(r"^\s*\|\|")
589 eol_re = re.compile(r"\r?\n")
590 # For each line, we scan through looking for magic strings, outputting verbatim any intervening text
591 #3.0: for self.line in eol_re.split(str(self.raw.expandtabs(), 'utf-8')):
592 for self.line in eol_re.split(str(self.raw.expandtabs())):
595 if self.line.startswith('#'):
597 self.in_header = False
600 print(re.sub(pre_re, self.replace, self.line))
602 if self.in_table and not tr_re.match(self.line):
603 self.in_table = False
604 print('</tbody></table><p>')
606 if blank_re.match(self.line):
609 indent = indent_re.match(self.line)
610 #3.0: print(self._indent_to(len(indent.group(0))), end=' ')
611 print(self._indent_to(len(indent.group(0))))
612 print(re.sub(scan_re, self.replace, self.line))
614 if self.in_pre: print('</pre>')
615 if self.in_table: print('</tbody></table><p>')
616 print(self._undent())
620 def __init__(self, page_name):
621 self.page_name = page_name
623 self.msg_type = 'error'
625 def split_title(self):
626 # look for the end of words and the start of a new word and insert a space there
627 return re.sub('([a-z])([A-Z])', r'\1 \2', self.page_name)
630 return self.page_name
632 def _tmp_filename(self):
633 return self.page_name + '.tmp' + str(os.getpid()) + '#'
637 os.stat(self._filename())
640 if err.errno == errno.ENOENT:
644 def get_raw_body(self, default=None):
646 return open(self._filename(), 'rb').read()
648 if err.errno == errno.ENOENT:
650 default = '//[[?a=edit&q=%s|Describe %s]]//' % (self.page_name, self.page_name)
652 if err.errno == errno.EISDIR:
653 return self.format_dir()
656 def format_dir(self):
659 for dirname in self.page_name.strip('/').split('/'):
660 pathname = (pathname + '/' + dirname) if pathname else dirname
661 out += '[[' + pathname + '|' + dirname + ']]/'
664 for filename in page_list(self._filename(), file_re):
665 if image_re.match(filename):
666 maxwidth = config_get(image_maxwidth, '')
668 maxwidth = ' | maxwidth=' + str(maxwidth)
669 out += '{{' + self.page_name + '/' + filename + ' | ' + humanlink(filename) + maxwidth + ' | class=thumbleft}}\n'
671 out += ' * [[' + self.page_name + '/' + filename + ']]\n'
675 if not '_pragmas' in self.__dict__:
678 file = open(self._filename(), 'rt')
679 attr_re = re.compile(r"^#(\S*)(.*)$")
681 m = attr_re.match(line)
684 self._pragmas[m.group(1)] = m.group(2).strip()
685 #print "bernie: pragmas[" + m.group(1) + "] = " + m.group(2) + "<br>\n"
687 if err.errno != errno.ENOENT and err.errno != errno.EISDIR:
691 def pragma(self, name, default):
692 return self.pragmas().get(name, default)
694 def can(self, action, default=True):
697 #acl SomeUser:read,write All:read
698 acl = self.pragma("acl", None)
699 for rule in acl.split():
700 (user, perms) = rule.split(':')
701 if user == remote_user() or user == "All":
702 return action in perms.split(',')
706 self.msg_text = 'Illegal acl line: ' + acl
710 return self.can("write", True)
713 return self.can("read", True)
715 def send_naked(self, kvargs=None):
717 WikiFormatter(self.get_raw_body(), kvargs).print_html()
719 send_guru("Read access denied by ACLs", "notice")
723 value = self.pragma("css", None)
726 link_urls += [ [ "stylesheet", value ] ]
728 send_title(self.page_name, self.split_title(),
729 msg_text=self.msg_text, msg_type=self.msg_type, writable=self.can_write())
731 send_footer(self._last_modified())
733 def _last_modified(self):
735 from time import localtime, strftime
736 modtime = localtime(os.stat(self._filename())[stat.ST_MTIME])
738 if err.errno != errno.ENOENT:
741 return strftime(config_get(datetime_fmt, '%a %d %b %Y %I:%M %p'), modtime)
743 def send_editor(self, preview=None):
744 send_title(None, 'Edit ' + self.split_title(), msg_text=self.msg_text, msg_type=self.msg_type)
745 if not self.can_write():
746 send_guru("Write access denied by ACLs", "error")
750 preview = self.get_raw_body(default='')
752 link_inline("sys/EditPage", kvargs = {
753 'EDIT_BODY': cgi.escape(preview),
754 #'EDIT_PREVIEW': WikiFormatter(preview).print_html(),
758 print("<div class='preview'>")
759 WikiFormatter(preview).print_html()
763 def send_raw(self, mimetype='text/plain', args=[]):
764 if not self.can_read():
765 send_title(None, msg_text='Read access denied by ACLs', msg_type='notice')
768 if 'maxwidth' in args:
770 emit_header(mimetype)
772 subprocess.check_call(['gm', 'convert', self._filename(),
773 '-scale', args['maxwidth'].value + ' >', '-'])
775 body = self.get_raw_body()
776 emit_header(mimetype)
779 def _write_file(self, data):
780 tmp_filename = self._tmp_filename()
781 open(tmp_filename, 'wb').write(data)
782 name = self._filename()
784 # Bad Bill! POSIX rename ought to replace. :-(
788 if err.errno != errno.ENOENT: raise err
789 path = os.path.split(name)[0]
790 if not os.path.exists(path):
792 os.rename(tmp_filename, name)
794 def save(self, newdata, changelog):
795 if not self.can_write():
796 self.msg_text = 'Write access denied by ACLs'
797 self.msg_type = 'error'
800 self._write_file(newdata)
802 if config_get('post_edit_hook'):
805 config_get('post_edit_hook'),
806 self.page_name, remote_user(),
807 remote_host(), changelog ]
808 child = subprocess.Popen(cmd, stdout=subprocess.PIPE, close_fds=True)
809 output = child.stdout.read()
812 self.msg_text += "Post-editing hook returned %d. Command was:\n'%s'\n" % (rc, "' '".join(cmd))
814 self.msg_text += 'Output follows:\n' + output
816 self.msg_text = 'Thank you for your contribution. Your attention to detail is appreciated.'
817 self.msg_type = 'success'
820 exec(open("geekigeeki.conf.py").read())
821 os.chdir(config_get('data_dir', 'data'))
822 form = cgi.FieldStorage()
823 action = form.getvalue('a', 'get')
824 handler = globals().get('handle_' + action)
826 handler(query_string(), form)
828 send_httperror("403 Forbidden", query_string())
832 msg_text = traceback.format_exc()
834 send_guru(msg_text, "error")
836 send_title(None, msg_text=msg_text)