freeipa/install/tools/ipactl

#!/usr/bin/python
# Authors: Simo Sorce <ssorce@redhat.com>
#
# Copyright (C) 2008-2010  Red Hat
# see file 'COPYING' for use and warranty information
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

import sys
try:
    from ipaserver.install import service
    from ipaserver.install import dsinstance
    from ipapython import config
    from ipalib import api, errors
    import logging
    import ldap
    import socket
except ImportError:
    print >> sys.stderr, """\
There was a problem importing one of the required Python modules. The
error was:

    %s
""" % sys.exc_value
    sys.exit(1)

def parse_options():
    usage = "%prog start|stop|restart|status\n"
    parser = config.IPAOptionParser(usage=usage,
                                    formatter=config.IPAFormatter())

    parser.add_option("-d", "--debug", action="store_true", dest="debug",
                      help="Display debugging information")

    options, args = parser.parse_args()
    safe_options = parser.get_safe_opts(options)

    return safe_options, options, args

def emit_err(err):
    sys.stderr.write(err)

def get_config():
    base = "cn=%s,cn=masters,cn=ipa,cn=etc,%s" % (socket.gethostname(),
                                                  api.env.basedn)
    srcfilter = '(ipaConfigString=enabledService)'
    attrs = ['cn', 'ipaConfigString']

    try:
        con = ldap.initialize(api.env.ldap_uri)
        con.simple_bind()
        res = con.search_st(base,
                            ldap.SCOPE_SUBTREE,
                            filterstr=srcfilter,
                            attrlist=attrs,
                            timeout=10)
    except Exception, e:
        print "Error retrieving list of services %s" % e
        print "Is IPA installed ?"
        raise

    svc_list = []

    for entry in res:
        name = entry[1]['cn'][0]
        for p in entry[1]['ipaConfigString']:
            if p.startswith('startOrder '):
                order = p.split()[1]
        svc_list.append((order, name))

    return svc_list

def ipa_start(serverid):

    try:
        print "Starting Directory Service"
        service.start('dirsrv', instance_name=serverid, capture_output=False)
    except:
        emit_err("Failed to start Directory Service")
        return

    svc_list = []
    try:
        svc_list = get_config()
    except:
        emit_err("Failed to read data from Directory Service")
        emit_err("Shutting down")
        service.stop('dirsrv', instance_name=serverid, capture_output=False)

    if len(svc_list) == 0:
        return

    for (order, svc) in sorted(svc_list):
        svc_name = service.SERVICE_LIST[svc][0]
        try:
            print "Starting %s Service" % svc
            service.start(svc_name, capture_output=False)
        except:
            emit_err("Failed to start %s Service" % svc)
            emit_err("Shutting down")
            for (order, svc) in sorted(svc_list):
                svc_name = service.SERVICE_LIST[svc][0]
                try:
                    service.stop(svc_name, capture_output=False)
                except:
                    pass
            try:
                service.stop('dirsrv', instance_name=serverid, capture_output=False)
            except:
                pass
            return

def ipa_stop(serverid):

    svc_list = []
    try:
        svc_list = get_config()
    except:
        # ok if dirsrv died this may fail, so let's try to quickly restart it
        # and see if we can get anything. If not throw our hands up and just
        # exit
        try:
            service.start('dirsrv', instance_name=serverid, capture_output=False)
            svc_list = get_config()
        except:
            emit_err("Failed to read data from Directory Service")
            emit_err("Shutting down")
            service.stop('dirsrv', instance_name=serverid, capture_output=False)

    if len(svc_list) == 0:
        return

    for (order, svc) in sorted(svc_list, reverse=True):
        svc_name = service.SERVICE_LIST[svc][0]
        try:
            print "Stopping %s Service" % svc
            service.stop(svc_name, capture_output=False)
        except:
            emit_err("Failed to stop %s Service" % svc)

    try:
        print "Stopping Directory Service"
        service.stop('dirsrv', instance_name=serverid, capture_output=False)
    except:
        emit_err("Failed to stop Directory Service")
        return


def ipa_restart(serverid):
    try:
        print "Restarting Directory Service"
        service.restart('dirsrv', instance_name=serverid, capture_output=False)
    except:
        emit_err("Failed to restart Directory Service")
        return

    svc_list = []
    try:
        svc_list = get_config()
    except:
        emit_err("Failed to read data from Directory Service")
        emit_err("Shutting down")
        service.stop('dirsrv', instance_name=serverid, capture_output=False)

    if len(svc_list) == 0:
        return

    for (order, svc) in sorted(svc_list):
        svc_name = service.SERVICE_LIST[svc][0]
        try:
            print "Restarting %s Service" % svc
            service.restart(svc_name, capture_output=False)
        except:
            emit_err("Failed to restart %s Service" % svc)
            emit_err("Shutting down")
            for (order, svc) in sorted(svc_list):
                svc_name = service.SERVICE_LIST[svc][0]
                try:
                    service.stop(svc_name, capture_output=False)
                except:
                    pass
            try:
                service.stop('dirsrv', instance_name=serverid, capture_output=False)
            except:
                pass
            return

def ipa_status(serverid):
    try:
        if service.is_running('dirsrv', instance_name=serverid):
            print "Directory Service: RUNNING"
        else:
            print "Directory Service: STOPPED"
    except:
        print "Failed to get Directory Service status"
        return

    svc_list = []
    try:
        svc_list = get_config()
    except:
        print "Failed to get list of services to probe status"

    if len(svc_list) == 0:
        return

    for (order, svc) in sorted(svc_list):
        svc_name = service.SERVICE_LIST[svc][0]
        try:
            if service.is_running(svc_name):
                print "%s Service: RUNNING" % svc
            else:
                print "%s Service: STOPPED" % svc
        except:
            print "Failed to get %s Service status" % svc

def main():

    safe_options, options, args = parse_options()

    if len(args) != 1:
        sys.exit("You must specify one action")
    elif args[0] != "start" and args[0] != "stop" and args[0] != "restart" and args[0] != "status":
        sys.exit("Unrecognized action [" + args[0] + "]")

    api.bootstrap(context='cli', debug=options.debug)
    api.finalize()

    serverid = dsinstance.realm_to_serverid(api.env.realm)

    if args[0].lower() == "start":
        ipa_start(serverid)
    elif args[0].lower() == "stop":
        ipa_stop(serverid)
    elif args[0].lower() == "restart":
        ipa_restart(serverid)
    elif args[0].lower() == "status":
        ipa_status(serverid)

try:
    if __name__ == "__main__":
        sys.exit(main())
except RuntimeError, e:
    print "%s" % e
    sys.exit(1)
except SystemExit, e:
    sys.exit(e)
except KeyboardInterrupt, e:
    sys.exit(1)