websubmit_webinterface.py
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Created: Fri, Nov 1, 10:14

websubmit_webinterface.py
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	## This file is part of CDS Invenio.
	## Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 CERN.
	##
	## CDS Invenio is free software; you can redistribute it and/or
	## modify it under the terms of the GNU General Public License as
	## published by the Free Software Foundation; either version 2 of the
	## License, or (at your option) any later version.
	##
	## CDS Invenio 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
	## General Public License for more details.
	##
	## You should have received a copy of the GNU General Public License
	## along with CDS Invenio; if not, write to the Free Software Foundation, Inc.,
	## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.

	__lastupdated__ = """$Date$"""

	__revision__ = "$Id$"

	import os
	import time
	import cgi
	try:
	from mod_python import apache
	except ImportError:
	pass

	from urllib import unquote, urlencode

	from invenio.config import \
	CFG_ACCESS_CONTROL_LEVEL_SITE, \
	CFG_SITE_LANG, \
	CFG_SITE_NAME, \
	CFG_SITE_NAME_INTL, \
	CFG_SITE_URL, \
	CFG_SITE_SECURE_URL, \
	CFG_WEBSUBMIT_STORAGEDIR, \
	CFG_PREFIX
	from invenio.dbquery import run_sql
	from invenio.access_control_config import VIEWRESTRCOLL
	from invenio.access_control_mailcookie import mail_cookie_create_authorize_action
	from invenio.access_control_engine import acc_authorize_action
	from invenio.webpage import page, create_error_box, pageheaderonly, \
	pagefooteronly
	from invenio.webuser import getUid, page_not_authorized, collect_user_info, isGuestUser
	from invenio.websubmit_config import *
	from invenio.webinterface_handler import wash_urlargd, WebInterfaceDirectory
	from invenio.urlutils import make_canonical_urlargd, redirect_to_url
	from invenio.messages import gettext_set_language
	from invenio.search_engine import \
	guess_primary_collection_of_a_record, \
	get_colID, \
	create_navtrail_links, check_user_can_view_record
	from invenio.bibdocfile import BibRecDocs, normalize_format, file_strip_ext, \
	stream_restricted_icon, BibDoc, InvenioWebSubmitFileError, stream_file
	from invenio.errorlib import register_exception
	from invenio.websubmit_icon_creator import create_icon, InvenioWebSubmitIconCreatorError
	import invenio.template
	websubmit_templates = invenio.template.load('websubmit')
	from invenio.websearchadminlib import get_detailed_page_tabs
	import invenio.template
	webstyle_templates = invenio.template.load('webstyle')
	websearch_templates = invenio.template.load('websearch')
	try:
	from invenio.fckeditor_invenio_connector import FCKeditorConnectorInvenio
	fckeditor_available = True
	except ImportError, e:
	fckeditor_available = False

	class WebInterfaceFilesPages(WebInterfaceDirectory):

	def __init__(self,recid):
	self.recid = recid

	def _lookup(self, component, path):
	# after /record/<recid>/files/ every part is used as the file
	# name
	filename = unquote(component)

	def getfile(req, form):
	args = wash_urlargd(form, websubmit_templates.files_default_urlargd)
	ln = args['ln']

	_ = gettext_set_language(ln)

	uid = getUid(req)
	user_info = collect_user_info(req)

	verbose = args['verbose']
	if verbose >= 1 and acc_authorize_action(user_info, 'fulltext')[0] != 0:
	# Only SuperUser can see all the details!
	verbose = 0

	if uid == -1 or CFG_ACCESS_CONTROL_LEVEL_SITE > 1:
	return page_not_authorized(req, "/record/%s" % self.recid,
	navmenuid='submit')

	(auth_code, auth_msg) = check_user_can_view_record(user_info, self.recid)
	if auth_code and user_info['email'] == 'guest' and not user_info['apache_user']:
	cookie = mail_cookie_create_authorize_action(VIEWRESTRCOLL, {'collection' : guess_primary_collection_of_a_record(self.recid)})
	target = '/youraccount/login' + \
	make_canonical_urlargd({'action': cookie, 'ln' : ln, 'referer' : \
	CFG_SITE_URL + user_info['uri']}, {})
	return redirect_to_url(req, target)
	elif auth_code:
	return page_not_authorized(req, "../", \
	text = auth_msg)


	readonly = CFG_ACCESS_CONTROL_LEVEL_SITE == 1

	# From now on: either the user provided a specific file
	# name (and a possible version), or we return a list of
	# all the available files. In no case are the docids
	# visible.
	try:
	bibarchive = BibRecDocs(self.recid)
	except InvenioWebSubmitFileError, e:
	register_exception(req=req, alert_admin=True)
	msg = "<p>%s</p><p>%s</p>" % (
	_("The system has encountered an error in retrieving the list of files for this document."),
	_("The error has been logged and will be taken in consideration as soon as possible."))
	return print_warning(msg)

	docname = ''
	format = ''
	version = ''

	if filename:
	# We know the complete file name, guess which docid it
	# refers to
	## TODO: Change the extension system according to ext.py from setlink
	## and have a uniform extension mechanism...
	docname = file_strip_ext(filename)
	format = filename[len(docname):]
	if format and format[0] != '.':
	format = '.' + format
	else:
	docname = args['docname']

	if not format:
	format = args['format']

	if not version:
	version = args['version']

	# version could be either empty, or all or an integer
	try:
	int(version)
	except ValueError:
	if version != 'all':
	version = ''

	display_hidden = acc_authorize_action(user_info, 'fulltext')[0] == 0

	if version != 'all':
	# search this filename in the complete list of files
	for doc in bibarchive.list_bibdocs():
	if docname == doc.get_docname():
	try:
	docfile = doc.get_file(format, version)
	except InvenioWebSubmitFileError, msg:
	register_exception(req=req, alert_admin=True)

	if docfile.get_status() == '':
	# The file is not resticted, let's check for
	# collection restriction then.
	(auth_code, auth_message) = check_user_can_view_record(user_info, self.recid)
	if auth_code:
	return warningMsg(_("The collection to which this file belong is restricted: ") + auth_message, req, CFG_SITE_NAME, ln)
	else:
	# The file is probably restricted on its own.
	# Let's check for proper authorization then
	(auth_code, auth_message) = docfile.is_restricted(req)
	if auth_code != 0:
	return warningMsg(_("This file is restricted: ") + auth_message, req, CFG_SITE_NAME, ln)

	if display_hidden or not docfile.hidden_p():
	if not readonly:
	ip = str(req.get_remote_host(apache.REMOTE_NOLOOKUP))
	res = doc.register_download(ip, version, format, uid)
	try:
	return docfile.stream(req)
	except InvenioWebSubmitFileError, msg:
	register_exception(req=req, alert_admin=True)
	return warningMsg(_("An error has happened in trying to stream the request file."), req, CFG_SITE_NAME, ln)
	else:
	warn = print_warning(_("The requested file is hidden and you don't have the proper rights to access it."))

	elif doc.get_icon() is not None and doc.get_icon().docname == file_strip_ext(filename):
	icon = doc.get_icon()
	try:
	iconfile = icon.get_file(format, version)
	except InvenioWebSubmitFileError, msg:
	register_exception(req=req, alert_admin=True)
	return warningMsg(_("An error has happened in trying to retrieve the corresponding icon."), req, CFG_SITE_NAME, ln)

	if iconfile.get_status() == '':
	# The file is not resticted, let's check for
	# collection restriction then.
	(auth_code, auth_message) = check_user_can_view_record(user_info, self.recid)
	if auth_code:
	return stream_restricted_icon(req)
	else:
	# The file is probably restricted on its own.
	# Let's check for proper authorization then
	(auth_code, auth_message) = iconfile.is_restricted(req)
	if auth_code != 0:
	return stream_restricted_icon(req)

	if not readonly:
	ip = str(req.get_remote_host(apache.REMOTE_NOLOOKUP))
	res = doc.register_download(ip, version, format, uid)
	try:
	return iconfile.stream(req)
	except InvenioWebSubmitFileError, msg:
	register_exception(req=req, alert_admin=True)
	return warningMsg(_("An error has happened in trying to stream the corresponding icon."), req, CFG_SITE_NAME, ln)

	if docname and format and display_hidden:
	req.status = apache.HTTP_NOT_FOUND
	warn = print_warning(_("Requested file does not seem to exist."))
	else:
	warn = ''
	filelist = bibarchive.display("", version, ln=ln, verbose=verbose, display_hidden=display_hidden)

	t = warn + websubmit_templates.tmpl_filelist(
	ln=ln,
	recid=self.recid,
	docname=args['docname'],
	version=version,
	filelist=filelist)

	cc = guess_primary_collection_of_a_record(self.recid)
	unordered_tabs = get_detailed_page_tabs(get_colID(cc), self.recid, ln)
	ordered_tabs_id = [(tab_id, values['order']) for (tab_id, values) in unordered_tabs.iteritems()]
	ordered_tabs_id.sort(lambda x,y: cmp(x[1],y[1]))
	link_ln = ''
	if ln != CFG_SITE_LANG:
	link_ln = '?ln=%s' % ln
	tabs = [(unordered_tabs[tab_id]['label'], \
	'%s/record/%s/%s%s' % (CFG_SITE_URL, self.recid, tab_id, link_ln), \
	tab_id == 'files',
	unordered_tabs[tab_id]['enabled']) \
	for (tab_id, order) in ordered_tabs_id
	if unordered_tabs[tab_id]['visible'] == True]
	top = webstyle_templates.detailed_record_container_top(self.recid,
	tabs,
	args['ln'])
	bottom = webstyle_templates.detailed_record_container_bottom(self.recid,
	tabs,
	args['ln'])
	title, description, keywords = websearch_templates.tmpl_record_page_header_content(req, self.recid, args['ln'])
	return pageheaderonly(title=title,
	navtrail=create_navtrail_links(cc=cc, aas=0, ln=ln) + \
	''' > <a class="navtrail" href="%s/record/%s">%s</a>
	> %s''' % \
	(CFG_SITE_URL, self.recid, title, _("Access to Fulltext")),

	description="",
	keywords="keywords",
	uid=uid,
	language=ln,
	req=req,
	navmenuid='search',
	navtrail_append_title_p=0) + \
	websearch_templates.tmpl_search_pagestart(ln) + \
	top + t + bottom + \
	websearch_templates.tmpl_search_pageend(ln) + \
	pagefooteronly(lastupdated=__lastupdated__, language=ln, req=req)
	return getfile, []

	def __call__(self, req, form):
	"""Called in case of URLs like /record/123/files without
	trailing slash.
	"""
	args = wash_urlargd(form, websubmit_templates.files_default_urlargd)
	ln = args['ln']
	link_ln = ''
	if ln != CFG_SITE_LANG:
	link_ln = '?ln=%s' % ln

	return redirect_to_url(req, '%s/record/%s/files/%s' % (CFG_SITE_URL, self.recid, link_ln))

	def websubmit_legacy_getfile(req, form):
	""" Handle legacy /getfile.py URLs """

	args = wash_urlargd(form, {
	'recid': (int, 0),
	'docid': (int, 0),
	'version': (str, ''),
	'name': (str, ''),
	'format': (str, ''),
	'ln' : (str, CFG_SITE_LANG)
	})

	_ = gettext_set_language(args['ln'])

	def _getfile_py(req, recid=0, docid=0, version="", name="", format="", ln=CFG_SITE_LANG):
	if not recid:
	## Let's obtain the recid from the docid
	if docid:
	try:
	bibdoc = BibDoc(docid=docid)
	recid = bibdoc.get_recid()
	except InvenioWebSubmitFileError, e:
	return warningMsg(_("An error has happened in trying to retrieve the requested file."), req, CFG_SITE_NAME, ln)
	else:
	return warningMsg(_('Not enough information to retrieve the document'), req, CFG_SITE_NAME, ln)
	else:
	if not name and docid:
	## Let's obtain the name from the docid
	try:
	bibdoc = BibDoc(docid)
	name = bibdoc.get_docname()
	except InvenioWebSubmitFileError, e:
	return warningMsg(_("An error has happened in trying to retrieving the requested file."), req, CFG_SITE_NAME, ln)

	format = normalize_format(format)

	redirect_to_url(req, '%s/record/%s/files/%s%s?ln=%s%s' % (CFG_SITE_URL, recid, name, format, ln, version and 'version=%s' % version or ''), apache.HTTP_MOVED_PERMANENTLY)

	return _getfile_py(req, **args)


	# --------------------------------------------------

	from invenio.websubmit_engine import home, action, interface, endaction

	class WebInterfaceSubmitPages(WebInterfaceDirectory):

	_exports = ['summary', 'sub', 'direct', '', 'attachfile']

	def attachfile(self, req, form):
	"""
	Process requests received from FCKeditor to upload files.
	If the uploaded file is an image, create an icon version
	"""
	if not fckeditor_available:
	return apache.HTTP_NOT_FOUND

	if not form.has_key('NewFile') or \
	not form.get('type', None) in \
	['File', 'Image', 'Flash', 'Media']:
	return apache.HTTP_NOT_FOUND

	uid = getUid(req)

	# URL where the file can be fetched after upload
	user_files_path = '%(CFG_SITE_URL)s/submit/getattachedfile/%(uid)s' % \
	{'uid': uid,
	'CFG_SITE_URL': CFG_SITE_URL}

	# Path to directory where uploaded files are saved
	user_files_absolute_path = '%(CFG_PREFIX)s/var/tmp/attachfile/%(uid)s' % \
	{'uid': uid,
	'CFG_PREFIX': CFG_PREFIX}
	try:
	os.makedirs(user_files_absolute_path)
	except:
	pass

	# Create a Connector instance to handle the request
	conn = FCKeditorConnectorInvenio(form, recid=-1, uid=uid,
	allowed_commands=['QuickUpload'],
	allowed_types = ['File', 'Image', 'Flash', 'Media'],
	user_files_path = user_files_path,
	user_files_absolute_path = user_files_absolute_path)

	user_info = collect_user_info(req)
	(auth_code, auth_msg) = acc_authorize_action(user_info, 'attachsubmissionfile')
	if user_info['email'] == 'guest' and not user_info['apache_user']:
	# User is guest: must login prior to upload
	data = conn.sendUploadResults(1, '', '', 'Please login before uploading file.')
	elif auth_code:
	# User cannot submit
	data = conn.sendUploadResults(1, '', '', 'Sorry, you are not allowed to submit files.')
	else:
	# Process the upload and get the response
	data = conn.doResponse()

	# At this point, the file has been uploaded. The FCKeditor
	# submit the image in form['NewFile']. However, the image
	# might have been renamed in between by the FCK connector on
	# the server side, by appending (%04d) at the end of the base
	# name. Retrieve that file
	uploaded_file_path = os.path.join(user_files_absolute_path,
	form['type'].lower(),
	form['NewFile'].filename)
	uploaded_file_path = retrieve_most_recent_attached_file(uploaded_file_path)
	uploaded_file_name = os.path.basename(uploaded_file_path)

	# Create an icon
	if form.get('type','') == 'Image':
	try:
	(icon_path, icon_name) = create_icon(
	{ 'input-file' : uploaded_file_path,
	'icon-name' : os.path.splitext(uploaded_file_name)[0],
	'icon-file-format' : os.path.splitext(uploaded_file_name)[1][1:] or 'gif',
	'multipage-icon' : False,
	'multipage-icon-delay' : 100,
	'icon-scale' : "300>", # Resize only if width > 300
	'verbosity' : 0,
	})

	# Move original file to /original dir, and replace it with icon file
	original_user_files_absolute_path = os.path.join(user_files_absolute_path,
	'image', 'original')
	if not os.path.exists(original_user_files_absolute_path):
	# Create /original dir if needed
	os.mkdir(original_user_files_absolute_path)
	os.rename(uploaded_file_path,
	original_user_files_absolute_path + os.sep + uploaded_file_name)
	os.rename(icon_path + os.sep + icon_name,
	uploaded_file_path)
	except InvenioWebSubmitIconCreatorError, e:
	pass

	# Transform the headers into something ok for mod_python
	for header in conn.headers:
	if not header is None:
	if header[0] == 'Content-Type':
	req.content_type = header[1]
	else:
	req.headers_out[header[0]] = header[1]

	# Send our response
	req.send_http_header()
	req.write(data)

	def _lookup(self, component, path):
	""" This handler is invoked for the dynamic URLs (for getting
	and putting attachments) Eg:
	/submit/getattachedfile/41336978/image/myfigure.png
	/submit/attachfile/41336978/image/myfigure.png
	"""
	if component == 'getattachedfile' and len(path) > 2:

	uid = path[0] # uid of the submitter
	file_type = path[1] # file, image, flash or media (as
	# defined by FCKeditor)

	if file_type in ['file', 'image', 'flash', 'media']:
	file_name = '/'.join(path[2:]) # the filename

	def answer_get(req, form):
	"""Accessing files attached to submission."""
	form['file'] = file_name
	form['type'] = file_type
	form['uid'] = uid
	return self.getattachedfile(req, form)

	return answer_get, []

	# All other cases: file not found
	return None, []

	def getattachedfile(self, req, form):
	"""
	Returns a file uploaded to the submission 'drop box' by the
	FCKeditor.
	"""
	argd = wash_urlargd(form, {'file': (str, None),
	'type': (str, None),
	'uid': (int, 0)})

	# Can user view this record, i.e. can user access its
	# attachments?
	uid = getUid(req)
	user_info = collect_user_info(req)

	if not argd['file'] is None:
	# Prepare path to file on disk. Normalize the path so that
	# ../ and other dangerous components are removed.
	path = os.path.abspath(CFG_PREFIX + '/var/tmp/attachfile/' + \
	'/' + str(argd['uid']) + \
	'/' + argd['type'] + '/' + argd['file'])

	# Check that we are really accessing attachements
	# directory, for the declared record.
	if path.startswith(CFG_PREFIX + '/var/tmp/attachfile/') and os.path.exists(path):
	return stream_file(req, path)

	# Send error 404 in all other cases
	return(apache.HTTP_NOT_FOUND)

	def direct(self, req, form):
	"""Directly redirected to an initialized submission."""
	args = wash_urlargd(form, {'sub': (str, ''),
	'access' : (str, '')})

	sub = args['sub']
	access = args['access']
	ln = args['ln']

	_ = gettext_set_language(ln)

	uid = getUid(req)
	if uid == -1 or CFG_ACCESS_CONTROL_LEVEL_SITE >= 1:
	return page_not_authorized(req, "direct",
	navmenuid='submit')

	myQuery = req.args
	if not sub:
	return warningMsg(_("Sorry, 'sub' parameter missing..."), req, ln=ln)
	res = run_sql("SELECT docname,actname FROM sbmIMPLEMENT WHERE subname=%s", (sub,))
	if not res:
	return warningMsg(_("Sorry. Cannot analyse parameter"), req, ln=ln)
	else:
	# get document type
	doctype = res[0][0]
	# get action name
	action = res[0][1]
	# retrieve other parameter values
	params = dict(form)
	# find existing access number
	if not access:
	# create 'unique' access number
	pid = os.getpid()
	now = time.time()
	access = "%i_%s" % (now,pid)
	# retrieve 'dir' value
	res = run_sql ("SELECT dir FROM sbmACTION WHERE sactname=%s", (action,))
	dir = res[0][0]

	mainmenu = req.headers_in.get('referer')

	params['access'] = access
	params['act'] = action
	params['doctype'] = doctype
	params['startPg'] = '1'
	params['mainmenu'] = mainmenu
	params['ln'] = ln
	params['indir'] = dir

	url = "%s/submit?%s" % (CFG_SITE_URL, urlencode(params))
	redirect_to_url(req, url)

	def sub(self, req, form):
	"""DEPRECATED: /submit/sub is deprecated now, so raise email to the admin (but allow submission to continue anyway)"""
	args = wash_urlargd(form, {'password': (str, '')})
	uid = getUid(req)
	if uid == -1 or CFG_ACCESS_CONTROL_LEVEL_SITE >= 1:
	return page_not_authorized(req, "../sub/",
	navmenuid='submit')
	try:
	raise DeprecationWarning, 'submit/sub handler has been used. Please use submit/direct. e.g. "submit/sub?RN=123@SBIFOO" -> "submit/direct?RN=123&sub=SBIFOO"'
	except DeprecationWarning:
	register_exception(req=req, alert_admin=True)

	ln = args['ln']
	_ = gettext_set_language(ln)
	#DEMOBOO_RN=DEMO-BOOK-2008-001&ln=en&password=1223993532.26572%40APPDEMOBOO
	params = dict(form)
	password = args['password']
	if password:
	del params['password']
	if "@" in password:
	params['access'], params['sub'] = password.split('@', 1)
	else:
	params['sub'] = password
	else:
	args = str(req.args).split('@')
	if len(args) > 1:
	params = {'sub' : args[-1]}
	args = '@'.join(args[:-1])
	params.update(cgi.parse_qs(args))
	else:
	return warningMsg(_("Sorry, invalid URL..."), req, ln=ln)
	url = "%s/submit/direct?%s" % (CFG_SITE_URL, urlencode(params, doseq=True))
	redirect_to_url(req, url)


	def summary(self, req, form):
	args = wash_urlargd(form, {
	'doctype': (str, ''),
	'act': (str, ''),
	'access': (str, ''),
	'indir': (str, '')})

	uid = getUid(req)
	if uid == -1 or CFG_ACCESS_CONTROL_LEVEL_SITE >= 1:
	return page_not_authorized(req, "../summary",
	navmenuid='submit')

	t=""
	curdir = os.path.join(CFG_WEBSUBMIT_STORAGEDIR, args['indir'], args['doctype'], args['access'])
	try:
	assert(curdir == os.path.abspath(curdir))
	except AssertionError:
	register_exception(req=req, alert_admin=True, prefix='Possible cracking tentative: indir="%s", doctype="%s", access="%s"' % (args['indir'], args['doctype'], args['access']))
	return warningMsg("Invalid parameters")

	subname = "%s%s" % (args['act'], args['doctype'])

	res = run_sql("select sdesc,fidesc,pagenb,level from sbmFIELD where subname=%s "
	"order by pagenb,fieldnb", (subname,))
	nbFields = 0

	values = []
	for arr in res:
	if arr[0] != "":
	val = {
	'mandatory' : (arr[3] == 'M'),
	'value' : '',
	'page' : arr[2],
	'name' : arr[0],
	}
	if os.path.exists(os.path.join(curdir, curdir,arr[1])):
	fd = open(os.path.join(curdir, arr[1]),"r")
	value = fd.read()
	fd.close()
	value = value.replace("\n"," ")
	value = value.replace("Select:","")
	else:
	value = ""
	val['value'] = value
	values.append(val)

	return websubmit_templates.tmpl_submit_summary(
	ln = args['ln'],
	values = values,
	)

	def index(self, req, form):

	args = wash_urlargd(form, {
	'c': (str, CFG_SITE_NAME),
	'doctype': (str, ''),
	'act': (str, ''),
	'startPg': (str, "1"),
	'access': (str, ''),
	'mainmenu': (str, ''),
	'fromdir': (str, ''),
	'nextPg': (str, ''),
	'nbPg': (str, ''),
	'curpage': (str, '1'),
	'step': (str, '0'),
	'mode': (str, 'U'),
	})

	req.form = form
	## Strip whitespace from beginning and end of doctype and action:
	args["doctype"] = args["doctype"].strip()
	args["act"] = args["act"].strip()

	def _index(req, c, ln, doctype, act, startPg, access,
	mainmenu, fromdir, nextPg, nbPg, curpage, step,
	mode):

	uid = getUid(req)
	if isGuestUser(uid):
	return redirect_to_url(req, "%s/youraccount/login%s" % (
	CFG_SITE_SECURE_URL,
	make_canonical_urlargd({
	'referer' : CFG_SITE_URL + req.unparsed_uri, 'ln' : args['ln']}, {})))

	if uid == -1 or CFG_ACCESS_CONTROL_LEVEL_SITE >= 1:
	return page_not_authorized(req, "../submit",
	navmenuid='submit')

	if doctype=="":
	return home(req,c,ln)
	elif act=="":
	return action(req,c,ln,doctype)
	elif int(step)==0:
	return interface(req, c, ln, doctype, act, startPg, access, mainmenu, fromdir, nextPg, nbPg, curpage)
	else:
	return endaction(req, c, ln, doctype, act, startPg, access,mainmenu, fromdir, nextPg, nbPg, curpage, step, mode)

	return _index(req, **args)

	# Answer to both /submit/ and /submit
	__call__ = index

	def errorMsg(title, req, c=None, ln=CFG_SITE_LANG):
	# load the right message language
	_ = gettext_set_language(ln)

	if c is None:
	c = CFG_SITE_NAME_INTL.get(ln, CFG_SITE_NAME)

	return page(title = _("Error"),
	body = create_error_box(req, title=title, verbose=0, ln=ln),
	description="%s - Internal Error" % c,
	keywords="%s, Internal Error" % c,
	uid = getUid(req),
	language=ln,
	req=req,
	navmenuid='submit')

	def warningMsg(title, req, c=None, ln=CFG_SITE_LANG):
	# load the right message language
	_ = gettext_set_language(ln)

	if c is None:
	c = CFG_SITE_NAME_INTL.get(ln, CFG_SITE_NAME)

	return page(title = _("Warning"),
	body = title,
	description="%s - Internal Error" % c,
	keywords="%s, Internal Error" % c,
	uid = getUid(req),
	language=ln,
	req=req,
	navmenuid='submit')

	def print_warning(msg, type='', prologue='<br />', epilogue='<br />'):
	"""Prints warning message and flushes output."""
	if msg:
	return websubmit_templates.tmpl_print_warning(
	msg = msg,
	type = type,
	prologue = prologue,
	epilogue = epilogue,
	)
	else:
	return ''

	def retrieve_most_recent_attached_file(file_path):
	"""
	Retrieve the latest file that has been uploaded with the
	FCKeditor. This is the only way to retrieve files that the
	FCKeditor has renamed after the upload.

	Eg: 'prefix/image.jpg' was uploaded but did already
	exist. FCKeditor silently renamed it to 'prefix/image(0001).jpg':
	>>> retrieve_most_recent_attached_file('prefix/image.jpg')
	'prefix/image(0001).jpg'
	"""
	(base_path, filename) = os.path.split(file_path)
	base_name = os.path.splitext(filename)[0]
	file_ext = os.path.splitext(filename)[1][1:]
	most_recent_filename = filename
	for i in range(1, 10000): # FCKeditor renames up to 9999. After it overwrites.
	possible_filename = "%s(%04d).%s" % \
	(base_name, i, file_ext)
	if os.path.exists(base_path + os.sep + possible_filename):
	most_recent_filename = possible_filename
	else:
	break

	return os.path.join(base_path, most_recent_filename)

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