ldap2csv.py

from ldap.controls import SimplePagedResultsControl
import ldap
import csv

try:
    # python-ldap 2.4
    LDAP_CONTROL_PAGED_RESULTS = ldap.CONTROL_PAGEDRESULTS
    PYTHON_LDAP_24 = True
except AttributeError:
    # python-ldap 2.3
    LDAP_CONTROL_PAGED_RESULTS = ldap.LDAP_CONTROL_PAGE_OID
    PYTHON_LDAP_24 = False

host = 'ldap://example.com:389'
bind_dn = 'ldap@example.com'
bind_pw = 'secret'
base_dn = 'dc=example,dc=com'
filter_ = '(objectCategory=Person)'
# Show only activate users
# filter_ = '(!(userAccountControl=66050))'
# filter_ = '(objectClass=*)'
attrs = [
    'sAMAccountName',
    'givenname',
    'sn',
    'mail',
    'description',
    'telephonenumber',
    'homephone',
    'mobile',
]
page_size = 1000

conn = ldap.initialize(host)
conn.simple_bind_s(bind_dn, bind_pw)

if PYTHON_LDAP_24:
    lc = SimplePagedResultsControl(size=page_size, cookie='')
else:
    lc = SimplePagedResultsControl(LDAP_CONTROL_PAGED_RESULTS,
                                   True,
                                   (page_size, ''),)

is_last_page = False
results = []
while not is_last_page:
    msgid = conn.search_ext(base_dn,
                            ldap.SCOPE_SUBTREE,
                            filter_,
                            attrs,
                            serverctrls=[lc])
    res = conn.search_s(base_dn, ldap.SCOPE_SUBTREE, filter_, attrs)
    rtype, rdata, rmsgid, serverctrls = conn.result3(msgid)
    results.extend(rdata)
    pctrls = [c for c in serverctrls
              if c.controlType == LDAP_CONTROL_PAGED_RESULTS]
    if pctrls:
        if PYTHON_LDAP_24:
            cookie = pctrls[0].cookie
            if cookie:
                lc.cookie = cookie
            else:
                is_last_page = True
        else:
            cookie = pctrls[0].controlValue[1]
            if cookie:
                lc.controlValue[1] = cookie
            else:
                is_last_page = True
    else:
        print "Server ignores paged results control (RFC 2696)."
        is_last_page = True

csv_file = open('users.csv', 'wb')
csv_writer = csv.writer(csv_file,
                        delimiter=';',
                        quotechar='"',
                        quoting=csv.QUOTE_MINIMAL)
csv_writer.writerow(attrs)
for dn, entry in results:
    row = []
    for attr in attrs:
        if attr in entry:
            row.append(entry[attr][0])
        else:
            row.append('')
    csv_writer.writerow(row)

csv_file.close()