python-ldap-dev

peculiar problem

[Anil J. <an...@en...>]

(thanks for all the help in my previous posts)

Hi,

I am seeing a peculiar problem in this area of the code. I don't know
exactly how to reproduce it. It almost like I have to wait a while and
I see this problem.

url = ''.join((self.server, base, '?', attr, '?', scope, '?', filter, '?'))
try:
    print url
    ldap_url = ldapurl.LDAPUrl(url)
    print ldap_url.attrs
    print attr
except ValueError:
    print "Bad URL"

The output is:

ldap://somehost.com:389/ou=People, o=entic.net?uid?one?mail=an...@en...?
[u'uid']
uid
Error - <type 'exceptions.TypeError'>: ('expected string in list', u'uid')


I am not sure if this is with my Pylons (web development framework) or
something specific to python-ldap.

Let me know if you can give me pointers on how I can try to troubleshoot this.

Thanks,
Anil

Re: peculiar problem

[<mi...@st...>]

Anil Jangity wrote:
> (thanks for all the help in my previous posts)
> 
> Hi,
> 
> I am seeing a peculiar problem in this area of the code. I don't know
> exactly how to reproduce it. It almost like I have to wait a while and
> I see this problem.
> 
> url = ''.join((self.server, base, '?', attr, '?', scope, '?', filter, '?'))
> try:
>     print url
>     ldap_url = ldapurl.LDAPUrl(url)
>     print ldap_url.attrs
>     print attr
> except ValueError:
>     print "Bad URL"
> 
> The output is:
> 
> ldap://somehost.com:389/ou=People, o=entic.net?uid?one?mail=an...@en...?
> [u'uid']
> uid
> Error - <type 'exceptions.TypeError'>: ('expected string in list', u'uid')

I can't reproduce the error since you didn't provide enough code.

But this simply works regarding module ldapurl:

>>> u=u'ldap://somehost.com:389/ou=People,
o=entic.net?uid?one?mail=an...@en...?'
>>> ldap_url=ldapurl.LDAPUrl(u)
>>> ldap_url.attrs
[u'uid']

Ciao, Michael.

Re: peculiar problem

[<mi...@st...>]

Anil Jangity wrote:
> 
> url = ''.join((self.server, base, '?', attr, '?', scope, '?', filter, '?'))
> try:
>     print url
>     ldap_url = ldapurl.LDAPUrl(url)

BTW: See also 2nd example on

http://python-ldap.sourceforge.net/doc/python-ldap/ldapurl-example.html

Ciao, Michael.

Re: peculiar problem

[Anil J. <an...@en...>]

I notice this in other areas of my code as well.

Here is a trace of a modify:

*** ldap://host:389 - SimpleLDAPObject.modify_ext (('cn=3DShilpa J,
uid=3Danilj, ou=3DPeople, o=3Dentic.net', [(0, 'mail',
[u'shi...@so...'])], None, None),{})
Error - <type 'exceptions.TypeError'>: ('expected a string in the
list', u'shi...@so...')


The problem is, it seems work on and off. When the modifications or
searches are done without the unicode string,  it works. But later
when I try to do the same thing again for some reason it trys to do
the LDAP operation using unicode lists: [u'abc']

Thats when it fails.

Is it something else in my code that is causing it or is something
else wrong in the python-ldap?

I'll see if I can find more details/code. I was just wondering if you
guys knew off the top of your heads...





On 2/25/07, Michael Str=F6der <mi...@st...> wrote:
> Anil Jangity wrote:
> >
> > url =3D ''.join((self.server, base, '?', attr, '?', scope, '?', filter,=
 '?'))
> > try:
> >     print url
> >     ldap_url =3D ldapurl.LDAPUrl(url)
>
> BTW: See also 2nd example on
>
> http://python-ldap.sourceforge.net/doc/python-ldap/ldapurl-example.html
>
> Ciao, Michael.
>

Re: peculiar problem

[<mi...@st...>]

Anil Jangity wrote:
> I notice this in other areas of my code as well.
> 
> Here is a trace of a modify:
> 
> *** ldap://host:389 - SimpleLDAPObject.modify_ext (('cn=Shilpa J,
> uid=anilj, ou=People, o=entic.net', [(0, 'mail',
> [u'shi...@so...'])], None, None),{})
> Error - <type 'exceptions.TypeError'>: ('expected a string in the
> list', u'shi...@so...')
> 
> 
> The problem is, it seems work on and off. When the modifications or
> searches are done without the unicode string,  it works. But later
> when I try to do the same thing again for some reason it trys to do
> the LDAP operation using unicode lists: [u'abc']
> 
> Thats when it fails.

You have to pass solely raw strings to python-ldap since the API does
not handle Unicode strings automatically.

 u'shi...@so...'.encode('utf-8')

Ciao, Michael.

Re: peculiar problem

[<mi...@st...>]

Anil,

please keep replies to the python-ldap-dev list.

Anil Jangity wrote:
> 
> But, why couldn't python-ldap automatically encode as utf-8? Is it
> because of performance issues?

Each attribute has different syntax, e.g. 'jpegPhoto' etc. So you have
to look at the schema to do the right thing. Or the application has
prior knowledge like most people are implementing it.

Strictly speaking in case of attribute 'mail' one would have to encode
as 'ascii' since the LDAP syntax for this is IA5String and ASCII is the
closest to this.

Ciao, Michael.