#!/usr/bin/python
import sys,os, grp
sys.path.append('/usr/sbin')
import voms

uv = voms.UpgradeVO({})    
def write_siblings_context(self):
        tomcat_group = None
        options = self.user_options
        user_id = os.geteuid()
        if not options.has_key("tomcat-group"):
         if user_id == 0:
            for group in ['tomcat5','tomcat4','tomcat']:
                try:
                    if grp.getgrnam(group):
                        (gr_name,gr_passwd, gr_gid,gr_mem) = grp.getgrnam(group)
                        options['tomcat-group-id']=gr_gid
                        break
                except KeyError, k:
                    continue
            if not options.has_key('tomcat-group-id'):
                raise voms.VomsConfigureError,"Please specify the --tomcat-group option. The default 'tomcat5', 'tomcat4', 'tomcat' are not applicable to your system."
         else:
            options['tomcat-group-id'] = os.getgid()
        else:
         try:
            (gr_name,gr_passwd, gr_gid,gr_mem) =  grp.getgrnam(options['tomcat-group'])
            options['tomcat-group-id']=gr_gid
         except KeyError, k:
            raise voms.VomsConfigureError, "The tomcat-group passed as argument (%s) does not exist on this system!" % options['tomcat-group']
        # replace template
        m = {'WAR_FILE': voms.VomsConstants.voms_siblings_war,
             'GLITE_LOCATION': voms.VomsConstants.voms_loc,
             'GLITE_LOCATION_VAR': voms.VomsConstants.voms_admin_conf_loc,
             'VOMS_ADMIN_LOCATION': voms.VomsConstants.voms_loc,
             'VOMS_ADMIN_LOCATION_VAR': voms.VomsConstants.voms_admin_conf_loc,
             'VOMS_LOCATION': voms.VomsConstants.voms_loc
             }
        t = voms.Template(open(voms.VomsConstants.voms_siblings_context_template,"r").read())
        voms.ConfigureAction.write_and_close(self, 
                                        voms.VomsConstants.voms_siblings_context, 
                                        t.sub(m))
        voms.setup_permissions(voms.VomsConstants.voms_siblings_context, 
                          0644, 
                          self.user_options['tomcat-group-id'])
#run the procedure
# you'll find /etc/voms-admin/voms-siblings.xml
write_siblings_context(uv)