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connector.py
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#!/usr/bin/env python
"""
FCKeditor - The text editor for Internet - http://www.fckeditor.net
Copyright (C) 2003-2007 Frederico Caldeira Knabben
== BEGIN LICENSE ==
Licensed under the terms of any of the following licenses at your
choice:
- GNU General Public License Version 2 or later (the "GPL")
http://www.gnu.org/licenses/gpl.html
- GNU Lesser General Public License Version 2.1 or later (the "LGPL")
http://www.gnu.org/licenses/lgpl.html
- Mozilla Public License Version 1.1 or later (the "MPL")
http://www.mozilla.org/MPL/MPL-1.1.html
== END LICENSE ==
Connector for Python.
Tested With:
Standard:
Python 2.3.3
Zope:
Zope Version: (Zope 2.8.1-final, python 2.3.5, linux2)
Python Version: 2.3.5 (#4, Mar 10 2005, 01:40:25)
[GCC 3.3.3 20040412 (Red Hat Linux 3.3.3-7)]
System Platform: linux2
"""
"""
Author Notes (04 December 2005):
This module has gone through quite a few phases of change. Obviously,
I am only supporting that part of the code that I use. Initially
I had the upload directory as a part of zope (ie. uploading files
directly into Zope), before realising that there were too many
complex intricacies within Zope to deal with. Zope is one ugly piece
of code. So I decided to complement Zope by an Apache server (which
I had running anyway, and doing nothing). So I mapped all uploads
from an arbitrary server directory to an arbitrary web directory.
All the FCKeditor uploading occurred this way, and I didn't have to
stuff around with fiddling with Zope objects and the like (which are
terribly complex and something you don't want to do - trust me).
Maybe a Zope expert can touch up the Zope components. In the end,
I had FCKeditor loaded in Zope (probably a bad idea as well), and
I replaced the connector.py with an alias to a server module.
Right now, all Zope components will simple remain as is because
I've had enough of Zope.
See notes right at the end of this file for how I aliased out of Zope.
Anyway, most of you probably wont use Zope, so things are pretty
simple in that regard.
Typically, SERVER_DIR is the root of WEB_DIR (not necessarily).
Most definitely, SERVER_USERFILES_DIR points to WEB_USERFILES_DIR.
"""
import cgi
import re
import os
import string
"""
escape
Converts the special characters '<', '>', and '&'.
RFC 1866 specifies that these characters be represented
in HTML as &lt; &gt; and &amp; respectively. In Python
1.5 we use the new string.replace() function for speed.
"""
def escape(text, replace=string.replace):
text = replace(text, '&', '&amp;') # must be done 1st
text = replace(text, '<', '&lt;')
text = replace(text, '>', '&gt;')
text = replace(text, '"', '&quot;')
return text
"""
getFCKeditorConnector
Creates a new instance of an FCKeditorConnector, and runs it
"""
def getFCKeditorConnector(context=None):
# Called from Zope. Passes the context through
connector = FCKeditorConnector(context=context)
return connector.run()
"""
FCKeditorRequest
A wrapper around the request object
Can handle normal CGI request, or a Zope request
Extend as required
"""
class FCKeditorRequest(object):
def __init__(self, context=None):
if (context is not None):
r = context.REQUEST
else:
r = cgi.FieldStorage()
self.context = context
self.request = r
def isZope(self):
if (self.context is not None):
return True
return False
def has_key(self, key):
return self.request.has_key(key)
def get(self, key, default=None):
value = None
if (self.isZope()):
value = self.request.get(key, default)
else:
if key in self.request.keys():
value = self.request[key].value
else:
value = default
return value
"""
FCKeditorConnector
The connector class
"""
class FCKeditorConnector(object):
# Configuration for FCKEditor
# can point to another server here, if linked correctly
#WEB_HOST = "http://127.0.0.1/"
WEB_HOST = ""
SERVER_DIR = "/var/www/html/"
WEB_USERFILES_FOLDER = WEB_HOST + "upload/"
SERVER_USERFILES_FOLDER = SERVER_DIR + "upload/"
# Allow access (Zope)
__allow_access_to_unprotected_subobjects__ = 1
# Class Attributes
parentFolderRe = re.compile("[\/][^\/]+[\/]?$")
"""
Constructor
"""
def __init__(self, context=None):
# The given root path will NOT be shown to the user
# Only the userFilesPath will be shown
# Instance Attributes
self.context = context
self.request = FCKeditorRequest(context=context)
self.rootPath = self.SERVER_DIR
self.userFilesFolder = self.SERVER_USERFILES_FOLDER
self.webUserFilesFolder = self.WEB_USERFILES_FOLDER
# Enables / Disables the connector
self.enabled = False # Set to True to enable this connector
# These are instance variables
self.zopeRootContext = None
self.zopeUploadContext = None
# Copied from php module =)
self.allowedExtensions = {
"File": None,
"Image": None,
"Flash": None,
"Media": None
}
self.deniedExtensions = {
"File": [ "html","htm","php","php2","php3","php4","php5","phtml","pwml","inc","asp","aspx","ascx","jsp","cfm","cfc","pl","bat","exe","com","dll","vbs","js","reg","cgi","htaccess","asis" ],
"Image": [ "html","htm","php","php2","php3","php4","php5","phtml","pwml","inc","asp","aspx","ascx","jsp","cfm","cfc","pl","bat","exe","com","dll","vbs","js","reg","cgi","htaccess","asis" ],
"Flash": [ "html","htm","php","php2","php3","php4","php5","phtml","pwml","inc","asp","aspx","ascx","jsp","cfm","cfc","pl","bat","exe","com","dll","vbs","js","reg","cgi","htaccess","asis" ],
"Media": [ "html","htm","php","php2","php3","php4","php5","phtml","pwml","inc","asp","aspx","ascx","jsp","cfm","cfc","pl","bat","exe","com","dll","vbs","js","reg","cgi","htaccess","asis" ]
}
"""
Zope specific functions
"""
def isZope(self):
# The context object is the zope object
if (self.context is not None):
return True
return False
def getZopeRootContext(self):
if self.zopeRootContext is None:
self.zopeRootContext = self.context.getPhysicalRoot()
return self.zopeRootContext
def getZopeUploadContext(self):
if self.zopeUploadContext is None:
folderNames = self.userFilesFolder.split("/")
c = self.getZopeRootContext()
for folderName in folderNames:
if (folderName <> ""):
c = c[folderName]
self.zopeUploadContext = c
return self.zopeUploadContext
"""
Generic manipulation functions
"""
def getUserFilesFolder(self):
return self.userFilesFolder
def getWebUserFilesFolder(self):
return self.webUserFilesFolder
def getAllowedExtensions(self, resourceType):
return self.allowedExtensions[resourceType]
def getDeniedExtensions(self, resourceType):
return self.deniedExtensions[resourceType]
def removeFromStart(self, string, char):
return string.lstrip(char)
def removeFromEnd(self, string, char):
return string.rstrip(char)
def convertToXmlAttribute(self, value):
if (value is None):
value = ""
return escape(value)
def convertToPath(self, path):
if (path[-1] <> "/"):
return path + "/"
else:
return path
def getUrlFromPath(self, resourceType, path):
if (resourceType is None) or (resourceType == ''):
url = "%s%s" % (
self.removeFromEnd(self.getUserFilesFolder(), '/'),
path
)
else:
url = "%s%s%s" % (
self.getUserFilesFolder(),
resourceType,
path
)
return url
def getWebUrlFromPath(self, resourceType, path):
if (resourceType is None) or (resourceType == ''):
url = "%s%s" % (
self.removeFromEnd(self.getWebUserFilesFolder(), '/'),
path
)
else:
url = "%s%s%s" % (
self.getWebUserFilesFolder(),
resourceType,
path
)
return url
def removeExtension(self, fileName):
index = fileName.rindex(".")
newFileName = fileName[0:index]
return newFileName
def getExtension(self, fileName):
index = fileName.rindex(".") + 1
fileExtension = fileName[index:]
return fileExtension
def getParentFolder(self, folderPath):
parentFolderPath = self.parentFolderRe.sub('', folderPath)
return parentFolderPath
"""
serverMapFolder
Purpose: works out the folder map on the server
"""
def serverMapFolder(self, resourceType, folderPath):
# Get the resource type directory
resourceTypeFolder = "%s%s/" % (
self.getUserFilesFolder(),
resourceType
)
# Ensure that the directory exists
self.createServerFolder(resourceTypeFolder)
# Return the resource type directory combined with the
# required path
return "%s%s" % (
resourceTypeFolder,
self.removeFromStart(folderPath, '/')
)
"""
createServerFolder
Purpose: physically creates a folder on the server
"""
def createServerFolder(self, folderPath):
# Check if the parent exists
parentFolderPath = self.getParentFolder(folderPath)
if not(os.path.exists(parentFolderPath)):
errorMsg = self.createServerFolder(parentFolderPath)
if errorMsg is not None:
return errorMsg
# Check if this exists
if not(os.path.exists(folderPath)):
os.mkdir(folderPath)
os.chmod(folderPath, 0755)
errorMsg = None
else:
if os.path.isdir(folderPath):
errorMsg = None
else:
raise "createServerFolder: Non-folder of same name already exists"
return errorMsg
"""
getRootPath
Purpose: returns the root path on the server
"""
def getRootPath(self):
return self.rootPath
"""
setXmlHeaders
Purpose: to prepare the headers for the xml to return
"""
def setXmlHeaders(self):
#now = self.context.BS_get_now()
#yesterday = now - 1
self.setHeader("Content-Type", "text/xml")
#self.setHeader("Expires", yesterday)
#self.setHeader("Last-Modified", now)
#self.setHeader("Cache-Control", "no-store, no-cache, must-revalidate")
self.printHeaders()
return
def setHeader(self, key, value):
if (self.isZope()):
self.context.REQUEST.RESPONSE.setHeader(key, value)
else:
print "%s: %s" % (key, value)
return
def printHeaders(self):
# For non-Zope requests, we need to print an empty line
# to denote the end of headers
if (not(self.isZope())):
print ""
"""
createXmlFooter
Purpose: returns the xml header
"""
def createXmlHeader(self, command, resourceType, currentFolder):
self.setXmlHeaders()
s = ""
# Create the XML document header
s += """<?xml version="1.0" encoding="utf-8" ?>"""
# Create the main connector node
s += """<Connector command="%s" resourceType="%s">""" % (
command,
resourceType
)
# Add the current folder node
s += """<CurrentFolder path="%s" url="%s" />""" % (
self.convertToXmlAttribute(currentFolder),
self.convertToXmlAttribute(
self.getWebUrlFromPath(
resourceType,
currentFolder
)
),
)
return s
"""
createXmlFooter
Purpose: returns the xml footer
"""
def createXmlFooter(self):
s = """</Connector>"""
return s
"""
sendError
Purpose: in the event of an error, return an xml based error
"""
def sendError(self, number, text):
self.setXmlHeaders()
s = ""
# Create the XML document header
s += """<?xml version="1.0" encoding="utf-8" ?>"""
s += """<Connector>"""
s += """<Error number="%s" text="%s" />""" % (number, text)
s += """</Connector>"""
return s
"""
getFolders
Purpose: command to recieve a list of folders
"""
def getFolders(self, resourceType, currentFolder):
if (self.isZope()):
return self.getZopeFolders(resourceType, currentFolder)
else:
return self.getNonZopeFolders(resourceType, currentFolder)
def getZopeFolders(self, resourceType, currentFolder):
# Open the folders node
s = ""
s += """<Folders>"""
zopeFolder = self.findZopeFolder(resourceType, currentFolder)
for (name, o) in zopeFolder.objectItems(["Folder"]):
s += """<Folder name="%s" />""" % (
self.convertToXmlAttribute(name)
)
# Close the folders node
s += """</Folders>"""
return s
def getNonZopeFolders(self, resourceType, currentFolder):
# Map the virtual path to our local server
serverPath = self.serverMapFolder(resourceType, currentFolder)
# Open the folders node
s = ""
s += """<Folders>"""
for someObject in os.listdir(serverPath):
someObjectPath = os.path.join(serverPath, someObject)
if os.path.isdir(someObjectPath):
s += """<Folder name="%s" />""" % (
self.convertToXmlAttribute(someObject)
)
# Close the folders node
s += """</Folders>"""
return s
"""
getFoldersAndFiles
Purpose: command to recieve a list of folders and files
"""
def getFoldersAndFiles(self, resourceType, currentFolder):
if (self.isZope()):
return self.getZopeFoldersAndFiles(resourceType, currentFolder)
else:
return self.getNonZopeFoldersAndFiles(resourceType, currentFolder)
def getNonZopeFoldersAndFiles(self, resourceType, currentFolder):
# Map the virtual path to our local server
serverPath = self.serverMapFolder(resourceType, currentFolder)
# Open the folders / files node
folders = """<Folders>"""
files = """<Files>"""
for someObject in os.listdir(serverPath):
someObjectPath = os.path.join(serverPath, someObject)
if os.path.isdir(someObjectPath):
folders += """<Folder name="%s" />""" % (
self.convertToXmlAttribute(someObject)
)
elif os.path.isfile(someObjectPath):
size = os.path.getsize(someObjectPath)
files += """<File name="%s" size="%s" />""" % (
self.convertToXmlAttribute(someObject),
os.path.getsize(someObjectPath)
)
# Close the folders / files node
folders += """</Folders>"""
files += """</Files>"""
# Return it
s = folders + files
return s
def getZopeFoldersAndFiles(self, resourceType, currentFolder):
folders = self.getZopeFolders(resourceType, currentFolder)
files = self.getZopeFiles(resourceType, currentFolder)
s = folders + files
return s
def getZopeFiles(self, resourceType, currentFolder):
# Open the files node
s = ""
s += """<Files>"""
zopeFolder = self.findZopeFolder(resourceType, currentFolder)
for (name, o) in zopeFolder.objectItems(["File","Image"]):
s += """<File name="%s" size="%s" />""" % (
self.convertToXmlAttribute(name),
((o.get_size() / 1024) + 1)
)
# Close the files node
s += """</Files>"""
return s
def findZopeFolder(self, resourceType, folderName):
# returns the context of the resource / folder
zopeFolder = self.getZopeUploadContext()
folderName = self.removeFromStart(folderName, "/")
folderName = self.removeFromEnd(folderName, "/")
if (resourceType <> ""):
try:
zopeFolder = zopeFolder[resourceType]
except:
zopeFolder.manage_addProduct["OFSP"].manage_addFolder(id=resourceType, title=resourceType)
zopeFolder = zopeFolder[resourceType]
if (folderName <> ""):
folderNames = folderName.split("/")
for folderName in folderNames:
zopeFolder = zopeFolder[folderName]
return zopeFolder
"""
createFolder
Purpose: command to create a new folder
"""
def createFolder(self, resourceType, currentFolder):
if (self.isZope()):
return self.createZopeFolder(resourceType, currentFolder)
else:
return self.createNonZopeFolder(resourceType, currentFolder)
def createZopeFolder(self, resourceType, currentFolder):
# Find out where we are
zopeFolder = self.findZopeFolder(resourceType, currentFolder)
errorNo = 0
errorMsg = ""
if self.request.has_key("NewFolderName"):
newFolder = self.request.get("NewFolderName", None)
zopeFolder.manage_addProduct["OFSP"].manage_addFolder(id=newFolder, title=newFolder)
else:
errorNo = 102
error = """<Error number="%s" originalDescription="%s" />""" % (
errorNo,
self.convertToXmlAttribute(errorMsg)
)
return error
def createNonZopeFolder(self, resourceType, currentFolder):
errorNo = 0
errorMsg = ""
if self.request.has_key("NewFolderName"):
newFolder = self.request.get("NewFolderName", None)
currentFolderPath = self.serverMapFolder(
resourceType,
currentFolder
)
try:
newFolderPath = currentFolderPath + newFolder
errorMsg = self.createServerFolder(newFolderPath)
if (errorMsg is not None):
errorNo = 110
except:
errorNo = 103
else:
errorNo = 102
error = """<Error number="%s" originalDescription="%s" />""" % (
errorNo,
self.convertToXmlAttribute(errorMsg)
)
return error
"""
getFileName
Purpose: helper function to extrapolate the filename
"""
def getFileName(self, filename):
for splitChar in ["/", "\\"]:
array = filename.split(splitChar)
if (len(array) > 1):
filename = array[-1]
return filename
"""
fileUpload
Purpose: command to upload files to server
"""
def fileUpload(self, resourceType, currentFolder):
if (self.isZope()):
return self.zopeFileUpload(resourceType, currentFolder)
else:
return self.nonZopeFileUpload(resourceType, currentFolder)
def zopeFileUpload(self, resourceType, currentFolder, count=None):
zopeFolder = self.findZopeFolder(resourceType, currentFolder)
file = self.request.get("NewFile", None)
fileName = self.getFileName(file.filename)
fileNameOnly = self.removeExtension(fileName)
fileExtension = self.getExtension(fileName).lower()
if (count):
nid = "%s.%s.%s" % (fileNameOnly, count, fileExtension)
else:
nid = fileName
title = nid
try:
zopeFolder.manage_addProduct['OFSP'].manage_addFile(
id=nid,
title=title,
file=file.read()
)
except:
if (count):
count += 1
else:
count = 1
self.zopeFileUpload(resourceType, currentFolder, count)
return
def nonZopeFileUpload(self, resourceType, currentFolder):
errorNo = 0
errorMsg = ""
if self.request.has_key("NewFile"):
# newFile has all the contents we need
newFile = self.request.get("NewFile", "")
# Get the file name
newFileName = newFile.filename
newFileNameOnly = self.removeExtension(newFileName)
newFileExtension = self.getExtension(newFileName).lower()
allowedExtensions = self.getAllowedExtensions(resourceType)
deniedExtensions = self.getDeniedExtensions(resourceType)
if (allowedExtensions is not None):
# Check for allowed
isAllowed = False
if (newFileExtension in allowedExtensions):
isAllowed = True
elif (deniedExtensions is not None):
# Check for denied
isAllowed = True
if (newFileExtension in deniedExtensions):
isAllowed = False
else:
# No extension limitations
isAllowed = True
if (isAllowed):
if (self.isZope()):
# Upload into zope
self.zopeFileUpload(resourceType, currentFolder)
else:
# Upload to operating system
# Map the virtual path to the local server path
currentFolderPath = self.serverMapFolder(
resourceType,
currentFolder
)
i = 0
while (True):
newFilePath = "%s%s" % (
currentFolderPath,
newFileName
)
if os.path.exists(newFilePath):
i += 1
newFilePath = "%s%s(%s).%s" % (
currentFolderPath,
newFileNameOnly,
i,
newFileExtension
)
errorNo = 201
break
else:
fileHandle = open(newFilePath,'w')
linecount = 0
while (1):
#line = newFile.file.readline()
line = newFile.readline()
if not line: break
fileHandle.write("%s" % line)
linecount += 1
os.chmod(newFilePath, 0777)
break
else:
newFileName = "Extension not allowed"
errorNo = 203
else:
newFileName = "No File"
errorNo = 202
string = """
<script type="text/javascript">
window.parent.frames["frmUpload"].OnUploadCompleted(%s,"%s");
</script>
""" % (
errorNo,
newFileName.replace('"',"'")
)
return string
def run(self):
s = ""
try:
# Check if this is disabled
if not(self.enabled):
return self.sendError(1, "This connector is disabled. Please check the connector configurations and try again")
# Make sure we have valid inputs
if not(
(self.request.has_key("Command")) and
(self.request.has_key("Type")) and
(self.request.has_key("CurrentFolder"))
):
return
# Get command
command = self.request.get("Command", None)
# Get resource type
resourceType = self.request.get("Type", None)
# folder syntax must start and end with "/"
currentFolder = self.request.get("CurrentFolder", None)
if (currentFolder[-1] <> "/"):
currentFolder += "/"
if (currentFolder[0] <> "/"):
currentFolder = "/" + currentFolder
# Check for invalid paths
if (".." in currentFolder):
return self.sendError(102, "")
# File upload doesn't have to return XML, so intercept
# her:e
if (command == "FileUpload"):
return self.fileUpload(resourceType, currentFolder)
# Begin XML
s += self.createXmlHeader(command, resourceType, currentFolder)
# Execute the command
if (command == "GetFolders"):
f = self.getFolders
elif (command == "GetFoldersAndFiles"):
f = self.getFoldersAndFiles
elif (command == "CreateFolder"):
f = self.createFolder
else:
f = None
if (f is not None):
s += f(resourceType, currentFolder)
s += self.createXmlFooter()
except Exception, e:
s = "ERROR: %s" % e
return s
# Running from command line
if __name__ == '__main__':
# To test the output, uncomment the standard headers
#print "Content-Type: text/html"
#print ""
print getFCKeditorConnector()
"""
Running from zope, you will need to modify this connector.
If you have uploaded the FCKeditor into Zope (like me), you need to
move this connector out of Zope, and replace the "connector" with an
alias as below. The key to it is to pass the Zope context in, as
we then have a like to the Zope context.
## Script (Python) "connector.py"
##bind container=container
##bind context=context
##bind namespace=
##bind script=script
##bind subpath=traverse_subpath
##parameters=*args, **kws
##title=ALIAS
##
import Products.connector as connector
return connector.getFCKeditorConnector(context=context).run()
"""

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