Webdav is useful to get information on something in exchange. Often you need to know what you can ask for. Here is a simple recipe to get a list of the attributes available for a specific item.
Python, 117 lines
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from xml.parsers import expat
def propfind(url,request,logon='',passwd='',depth=1):
##pfind='''<?xml version="1.0" ?>
##<D:propfind xmlns:D='DAV:' xmlns:m='urn:schemas:httpmail:'>
## <D:prop> <m:from/> <m:to/> <m:subject/> </D:prop>
##</D:propfind>'''
##dav=propfind(url,pfind)
dav = win32com.client.Dispatch('Microsoft.XMLHTTP')
dav.open('PROPFIND',url, 0) #,Logon, passwd)
dav.setRequestHeader("Content-type:", "text/xml")
dav.setRequestHeader("depth", depth) #0=immediate,1=w/children,infinity=all
dav.setRequestHeader("Translate", "f")
dav.send(request)
return dav.responseText
class xml_process:
def __init__(self,the_data,fields=[],keep_prefix=0,keep_attr=0):
self.results=[]
self.cur_name=None
self.tmp=[]
self.the_data=the_data
self.p=expat.ParserCreate()
self.p.StartElementHandler=self.start
self.p.EndElementHandler=self.end
self.p.CharacterDataHandler=self.data
self.fields=fields
self.keep_prefix=keep_prefix
self.keep_attr=keep_attr
def clean(self,data):
tmp=''.join(data)
return ' '.join(tmp.split())
def start(self,name,attrs):
if not self.cur_name: self.cur_name=name
tmp_name=self.cur_name
if not self.keep_prefix:
if self.cur_name[1]==':': tmp_name=self.cur_name[2:]
self.attrs=attrs
if name != self.cur_name:
if not self.attrs or not self.keep_attr:
if not self.fields or tmp_name.lower() in self.fields:
self.results.append( {tmp_name:self.clean(self.tmp)})
else:
if not self.fields or tmp_name.lower() in self.fields:
self.results.append( { tmp_name:{self.clean(self.tmp):attrs}})
self.tmp=[]
self.cur_name=name
def data(self,info): self.tmp.append(info)
def end(self,name): pass
def parse(self):
if 'xml' not in self.the_data[0:50].lower(): return []
self.p.Parse(self.the_data,1)
results=self.results
if self.fields:
filter_cache={}
results=[{}]
for i in self.fields: filter_cache[i]=None
for row in self.results:
k,v=row.items()[0]
#check if filter_cache is full
full=0
for i in filter_cache:
if not filter_cache[i]:
filter_cache[i]=1
full=0;break
full=1
if full:
for i in self.fields: filter_cache[i]=None
full=0
results.append({})
if k not in results[-1]:
results[-1][k]=v
return results
#Props={}
def all_props(url,raw=0,namespace=0,logon='',passwd=''):
request='''<?xml version="1.0" ?>
<D:propfind xmlns:D="DAV:">
<D:allprop/>
</D:propfind>'''
text=propfind(url,request,depth=0,logon=logon,passwd=passwd)
if raw: return text
elif namespace:
xmlns=text[text.find('multistatus'):]
xmlns=xmlns[:xmlns.find('>')]
xmlns_ref={}
for i in xmlns.split('xmlns:'):
j=i.split('=')
if len(j)==2:
k,v=j
xmlns_ref[k]=v
result=xml_process(text,keep_prefix=1)
field_ref={}
for i in result.parse():
l=i.keys()[0] #l=d:busystatus
if ':' not in l: continue
k,v=l.split(':')
field_ref[v]=xmlns_ref[k]
return field_ref
else:
result=xml_process(text)
result2=[]
for i in result.parse():
field=i.keys()[0]
result2.append(field)
return result2
url='http://host/exchange/user/Calendar/'
print all_props(url)
print all_props(url,namespace=1)
print all_props(url,raw=1)
|
As an example, information about the calendar is acquired.
The function all_props has 3 modes. Without any options it just gives you a list of properties. If you set namespace to be true, you get a list of properties and their corresponding namespace. If you want to look at the raw xml, set raw to true. The xml is parsed rather simply with expat which works well with the xml data the exchange server returns.
Tags: sysadmin
I am pyguy2 on yahoo. You can reach me(the author) at pyguy2 on yahoo
xmlhhtp without win32com. Hi,
This code really helped me get started with webdav. I also wrote a small python class to give the same functionality as the xmlhttp com object. Have tested the code on Windows XP Service Pack 2 and also Red Hat Linux. Both seem to work fine. Let me know if you encounter any issues!
Class File
Example Usage