add authorizedprincipalscommand
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2 changed files with 136 additions and 0 deletions
85
scripts/authorizedprincipals.py
Executable file
85
scripts/authorizedprincipals.py
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#!/usr/bin/env python
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#
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# A Dovecot post-login script for IMAP. This creates environment
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# ACL_GROUPS with a comma-separated list of the user's LDAP group
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# memberships and then execs the Dovecot IMAP handler.
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#
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import ldap;
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import logging
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import os, sys, platform
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import re
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logging.basicConfig(level=logging.DEBUG,filename='/var/log/ssh-principalcommand.log')
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logger = logging.getLogger(__name__)
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hostname = platform.node()
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dnFilter = re.compile("^ldap_default_bind_dn *=")
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pwFilter = re.compile("^ldap_default_authtok *=")
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with open('/etc/sssd/sssd.conf') as f:
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content = f.readlines()
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content = [x.strip() for x in content]
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for line in content:
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if dnFilter.search(line):
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bindAccount = line.partition('=')[2].strip()
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if pwFilter.search(line):
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bindPw = line.partition('=')[2].strip()
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ldapUrl = "ldap://ldap.schuerz.at"
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hostDn = bindAccount.split(',')
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hostDn.pop(0)
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hostDn = ','.join(hostDn)
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searchBase = "dc=schuerz,dc=at"
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searchFilter = "(&(dcAccountStatus=active)(|(memberof=cn=perm-sys_local_admins," + hostDn + ") (memberof=cn=perm-sys_local_users," + hostDn + ") ( memberof=cn=perm-sys_admins,ou=all_hosts,ou=posix,ou=groups,dc=schuerz,dc=at) (memberof=cn=perm-sys_users,ou=all_hosts,ou=posix,ou=groups,dc=schuerz,dc=at)))"
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groupBase = re.compile("ou=groups,dc=schuerz,dc=at|cn=perm-svc-mailserver_admins,ou=mailserver,ou=system,ou=services,dc=schuerz,dc=at")
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logger.debug(searchFilter)
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logger.debug(groupBase)
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logger.debug("ENV: %s" % (os.environ))
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user = {0}
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groups = []
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l = ldap.initialize(ldapUrl)
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l.set_option(ldap.OPT_X_TLS_CACERTFILE, '/etc/ssl/certs/Xunde_Energie_Chain-CA.pem')
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l.set_option(ldap.OPT_X_TLS,ldap.OPT_X_TLS_DEMAND)
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l.set_option(ldap.OPT_X_TLS_DEMAND, True)
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l.set_option(ldap.OPT_DEBUG_LEVEL, 255)
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l.set_option(ldap.OPT_REFERRALS, 0)
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l.set_option(ldap.OPT_PROTOCOL_VERSION, 3)
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l.start_tls_s()
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l.bind(bindAccount, bindPw, ldap.AUTH_SIMPLE)
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res = l.search_s(searchBase, ldap.SCOPE_SUBTREE,
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searchFilter,
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['uid'])
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for dn, entry in res:
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try:
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for g in entry['uid']:
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# Returns 'cn=All UK staff,ou=Groups,dc=example,dc=com' etc.
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# Fish out 'All UK staff' as group name.
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#print g
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groups.append(g)
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except KeyError:
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pass # User in no groups.
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#logger.debug('USERDB_KEYS: (before) '+str(os.environ["USERDB_KEYS"]))
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print ' '.join(groups)
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sys.exit(0)
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os.environ["ACL_GROUPS"] = ",".join(set(groups))
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try:
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logger.debug('try')
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#os.environ["USERDB_KEYS"] += " GROUPS"
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os.environ["USERDB_KEYS"] += "acl_groups"
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except KeyError:
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logger.debug('except')
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#os.environ["USERDB_KEYS"] = "GROUPS"
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os.environ["USERDB_KEYS"] = "acl_groups"
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logger.debug('ACL_GROUPS: '+str(os.environ["ACL_GROUPS"]))
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logger.debug('USERDB_KEYS: '+str(os.environ["USERDB_KEYS"]))
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logger.debug("ENV(after): %s" % (os.environ))
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logger.debug('sys.argv[1]: '+str(sys.argv[1]))
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logger.debug('sys.argv[1:]: '+str(sys.argv[1:]))
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logger.debug('sys.argv: '+str(sys.argv))
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logger.debug('-------------------------')
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os.execv(sys.argv[1], sys.argv[1:])
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sys.exit(1) # In case above fails
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51
scripts/authorizedprincipals.sh
Executable file
51
scripts/authorizedprincipals.sh
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#!/bin/bash
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LDAPSEARCH=/usr/bin/ldapsearch
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SSSD_CONFIG=/etc/sssd/sssd.conf
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SEARCHBASE="dc=schuerz,dc=at"
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BindDN=$(sed -n -e '/^ldap_default_bind_dn/s/^ldap_default_bind_dn[ ]*=[ ]*//p' $SSSD_CONFIG)
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BindPW=$(sed -n -e '/^ldap_default_authtok/s/^ldap_default_authtok[ ]*=[ ]*//p' $SSSD_CONFIG)
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LDAPHost="ldap://ldap.schuerz.at"
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HostDN=""
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function join_by { local d=$1; shift; echo -n "$1"; shift; printf "%s" "${@/#/$d}"; }
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#echo BindDN: $BindDN
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#echo BindPW: $BindPW
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#echo HostDN: $HostDN
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regex='([^,]+),([^,]+),([^,]+),([^,]+),([^,]+),([^,]+)'
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#regex='(([^,]+),)+[^,]+'
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if [[ $BindDN =~ $regex ]]; then
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i=2
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n=${#BASH_REMATCH[*]}
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#echo BR ${BASH_REMATCH[*]}
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# delete=( ${BASH_REMATCH[1]} )
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# echo delete ${delete[*]}
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# echo deleted ${BASH_REMATCH[*]/$delete}
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# HostDN=("${BASH_REMATCH[@]/$delete}")
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while [[ $i -lt $n ]]
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do
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#echo " capture[$i]: ${BASH_REMATCH[$i]}"
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if [[ -z "$HostDN" ]]; then
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HostDN="${BASH_REMATCH[$i]}"
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#echo $HostDN
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else
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HostDN="${HostDN},${BASH_REMATCH[$i]}"
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#echo $HostDN
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fi
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let i++
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done
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else
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echo BindDN does not match regex
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echo $BindDN
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echo $regex
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fi
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#echo "HostDN: $HostDN"
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SEARCHFILTER="(&(dcAccountStatus=active)(|(memberof=cn=perm-sys_local_admins,${HostDN}) (memberof=cn=perm-sys_local_users,${HostDN}) ( memberof=cn=perm-sys_admins,ou=all_hosts,ou=posix,ou=groups,dc=schuerz,dc=at) (memberof=cn=perm-sys_users,ou=all_hosts,ou=posix,ou=groups,dc=schuerz,dc=at)))"
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#echo "SEARCHFILTER: $SEARCHFILTER"
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ldapsearch -LLL -Z -w $BindPW -D $BindDN "${SEARCHFILTER}" uid|awk 'BEGIN{ORS=" "}$1=="uid:" {print $2}'
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