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/*
Unix SMB/Netbios implementation.
Version 1.9.
LDAP protocol helper functions for SAMBA
Copyright (C) Jean François Micouleau 1998
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifdef USE_LDAP
#include "includes.h"
#include "lber.h"
#include "ldap.h"
extern int DEBUGLEVEL;
/*******************************************************************
open a connection to the ldap serve.
******************************************************************/
BOOL ldap_open_connection(LDAP **ldap_struct)
{
if ( (*ldap_struct = ldap_open(lp_ldap_server(),lp_ldap_port()) )== NULL)
{
DEBUG(0,("%s: The LDAP server is not responding !\n",timestring()));
return(False);
}
DEBUG(2,("ldap_open_connection: connection opened\n"));
return (True);
}
/*******************************************************************
connect anonymously to the ldap server.
FIXME: later (jfm)
******************************************************************/
static BOOL ldap_connect_anonymous(LDAP *ldap_struct)
{
if ( ldap_simple_bind_s(ldap_struct,lp_ldap_root(),lp_ldap_rootpasswd()) != LDAP_SUCCESS)
{
DEBUG(0,("%s: Couldn't bind to the LDAP server !\n", timestring() ));
return(False);
}
return (True);
}
/*******************************************************************
connect to the ldap server under system privileg.
******************************************************************/
BOOL ldap_connect_system(LDAP *ldap_struct)
{
if ( ldap_simple_bind_s(ldap_struct,lp_ldap_root(),lp_ldap_rootpasswd()) != LDAP_SUCCESS)
{
DEBUG(0,("%s: Couldn't bind to the LDAP server !\n", timestring() ));
return(False);
}
DEBUG(2,("ldap_connect_system: succesfull connection to the LDAP server\n"));
return (True);
}
/*******************************************************************
connect to the ldap server under a particular user.
******************************************************************/
static BOOL ldap_connect_user(LDAP *ldap_struct, char *user, char *password)
{
if ( ldap_simple_bind_s(ldap_struct,lp_ldap_root(),lp_ldap_rootpasswd()) != LDAP_SUCCESS)
{
DEBUG(0,("%s: Couldn't bind to the LDAP server !\n", timestring() ));
return(False);
}
DEBUG(2,("ldap_connect_user: succesfull connection to the LDAP server\n"));
return (True);
}
/*******************************************************************
run the search by name.
******************************************************************/
static BOOL ldap_search_one_user(LDAP *ldap_struct, char *filter, LDAPMessage **result)
{
int scope = LDAP_SCOPE_ONELEVEL;
int rc;
DEBUG(2,("ldap_search_one_user: searching for:[%s]\n", filter));
rc=ldap_search_s(ldap_struct, lp_ldap_suffix(), scope, filter, NULL, 0, result);
if (rc != LDAP_SUCCESS )
{
DEBUG(0,("%s: Problem during the LDAP search\n",timestring()));
return(False);
}
return (True);
}
/*******************************************************************
run the search by name.
******************************************************************/
BOOL ldap_search_one_user_by_name(LDAP *ldap_struct, char *user, LDAPMessage **result)
{
pstring filter;
/*
in the filter expression, replace %u with the real name
so in ldap filter, %u MUST exist :-)
*/
strcpy(filter,lp_ldap_filter());
string_sub(filter,"%u",user);
if ( !ldap_search_one_user(ldap_struct, filter, result) )
{
return(False);
}
return (True);
}
/*******************************************************************
run the search by uid.
******************************************************************/
BOOL ldap_search_one_user_by_uid(LDAP *ldap_struct, int uid, LDAPMessage **result)
{
pstring filter;
/*
in the filter expression, replace %u with the real name
so in ldap filter, %u MUST exist :-)
*/
snprintf(filter, sizeof(pstring), "uidAccount=%d", uid);
if ( !ldap_search_one_user(ldap_struct, filter, result) )
{
return(False);
}
return (True);
}
/*******************************************************************
search an attribute and return the first value found.
******************************************************************/
void get_single_attribute(LDAP *ldap_struct, LDAPMessage *entry, char *attribute, char *value)
{
char **valeurs;
if ( (valeurs=ldap_get_values(ldap_struct, entry, attribute)) != NULL)
{
strcpy(value, valeurs[0]);
ldap_value_free(valeurs);
DEBUG(3,("get_single_attribute: [%s]=[%s]\n", attribute, value));
}
else
{
value=NULL;
}
}
/*******************************************************************
check if the returned entry is a sambaAccount objectclass.
******************************************************************/
BOOL ldap_check_user(LDAP *ldap_struct, LDAPMessage *entry)
{
BOOL sambaAccount=False;
char **valeur;
int i;
DEBUG(2,("ldap_check_user: "));
valeur=ldap_get_values(ldap_struct, entry, "objectclass");
if (valeur!=NULL)
{
for (i=0;valeur[i]!=NULL;i++)
{
if (!strcmp(valeur[i],"sambaAccount")) sambaAccount=True;
}
}
DEBUG(2,("%s\n",sambaAccount?"yes":"no"));
ldap_value_free(valeur);
return (sambaAccount);
}
/*******************************************************************
check if the returned entry is a sambaMachine objectclass.
******************************************************************/
BOOL ldap_check_machine(LDAP *ldap_struct, LDAPMessage *entry)
{
BOOL sambaMachine=False;
char **valeur;
int i;
DEBUG(2,("ldap_check_machine: "));
valeur=ldap_get_values(ldap_struct, entry, "objectclass");
if (valeur!=NULL)
{
for (i=0;valeur[i]!=NULL;i++)
{
if (!strcmp(valeur[i],"sambaMachine")) sambaMachine=True;
}
}
DEBUG(2,("%s\n",sambaMachine?"yes":"no"));
ldap_value_free(valeur);
return (sambaMachine);
}
/*******************************************************************
retrieve the user's info and contruct a smb_passwd structure.
******************************************************************/
static void ldap_get_user(LDAP *ldap_struct,LDAPMessage *entry,
struct smb_passwd *ldap_passwd)
{
static pstring user_name;
static unsigned char ldappwd[16];
static unsigned char smbntpwd[16];
char **valeur;
get_single_attribute(ldap_struct, entry, "cn", user_name);
DEBUG(2,("ldap_get_user: user: %s\n",user_name));
if ( (valeur=ldap_get_values(ldap_struct, entry, "uidAccount")) != NULL)
{
ldap_passwd->smb_userid=atoi(valeur[0]);
ldap_value_free(valeur);
}
if ( (valeur=ldap_get_values(ldap_struct, entry, "userPassword")) != NULL)
{
memset(smbntpwd, '\0', 16);
E_md4hash((uchar *) valeur[0], smbntpwd);
valeur[0][14] = '\0';
strupper(valeur[0]);
memset(ldappwd, '\0', 16);
E_P16((uchar *) valeur[0], ldappwd);
ldap_value_free(valeur);
}
if ( (valeur=ldap_get_values(ldap_struct,entry, "userAccountControl") ) != NULL)
{
ldap_passwd->acct_ctrl=atoi(valeur[0]);
if (ldap_passwd->acct_ctrl & (ACB_DOMTRUST|ACB_WSTRUST|ACB_SVRTRUST) )
{
DEBUG(0,("Inconsistency in the LDAP database\n"));
}
if (ldap_passwd->acct_ctrl & ACB_NORMAL)
{
ldap_passwd->smb_name=user_name;
ldap_passwd->smb_passwd=ldappwd;
ldap_passwd->smb_nt_passwd=smbntpwd;
}
ldap_value_free(valeur);
}
if ( (valeur=ldap_get_values(ldap_struct,entry, "pwdLastSet")) != NULL)
{
ldap_passwd->last_change_time=(time_t)strtol(valeur[0], NULL, 16);
ldap_value_free(valeur);
}
}
/*******************************************************************
retrieve the machine's info and contruct a smb_passwd structure.
******************************************************************/
static void ldap_get_machine(LDAP *ldap_struct,LDAPMessage *entry,
struct smb_passwd *ldap_passwd)
{
static pstring user_name;
static unsigned char smbntpwd[16];
char **valeur;
/* by default it's a station */
ldap_passwd->acct_ctrl = ACB_WSTRUST;
get_single_attribute(ldap_struct, entry, "cn", user_name);
DEBUG(2,("ldap_get_machine: machine: %s\n", user_name));
if ( (valeur=ldap_get_values(ldap_struct, entry, "uidAccount")) != NULL)
{
ldap_passwd->smb_userid=atoi(valeur[0]);
ldap_value_free(valeur);
}
if ( (valeur=ldap_get_values(ldap_struct, entry, "machinePassword")) != NULL)
{
gethexpwd(valeur[0],smbntpwd);
ldap_value_free(valeur);
}
if ( (valeur=ldap_get_values(ldap_struct,entry, "machineRole") ) != NULL)
{
if ( !strcmp(valeur[0],"workstation") )
ldap_passwd->acct_ctrl=ACB_WSTRUST;
else
if ( !strcmp(valeur[0],"server") )
ldap_passwd->acct_ctrl=ACB_SVRTRUST;
ldap_value_free(valeur);
}
ldap_passwd->smb_name=user_name;
ldap_passwd->smb_passwd=smbntpwd;
ldap_passwd->smb_nt_passwd=smbntpwd;
}
/*******************************************************************
find a user or a machine return a smbpass struct.
******************************************************************/
static struct smb_passwd *get_ldappwd_entry(char *name, int smb_userid)
{
LDAP *ldap_struct;
LDAPMessage *result;
LDAPMessage *entry;
BOOL machine=False;
static struct smb_passwd ldap_passwd;
ldap_passwd.smb_name = NULL;
ldap_passwd.smb_passwd = NULL;
ldap_passwd.smb_nt_passwd = NULL;
ldap_passwd.smb_userid = -1;
ldap_passwd.acct_ctrl = ACB_DISABLED;
ldap_passwd.last_change_time = 0;
ldap_struct=NULL;
if (name != NULL)
{
DEBUG(10, ("get_ldappwd_entry: search by name: %s\n", name));
}
else
{
DEBUG(10, ("get_ldappwd_entry: search by smb_userid: %x\n", smb_userid));
}
if (!ldap_open_connection(&ldap_struct))
return (NULL);
if (!ldap_connect_system(ldap_struct))
return (NULL);
if (name != NULL)
{
if (!ldap_search_one_user_by_name(ldap_struct, name, &result))
return (NULL);
}
else
{
if (!ldap_search_one_user_by_uid(ldap_struct, smb_userid, &result))
return (NULL);
}
if (ldap_count_entries(ldap_struct, result) == 0)
{
DEBUG(2,("%s: Non existant user!\n", timestring() ));
return (NULL);
}
if (ldap_count_entries(ldap_struct, result) > 1)
{
DEBUG(2,("%s: Strange %d users in the base!\n",
timestring(), ldap_count_entries(ldap_struct, result) ));
}
/* take the first and unique entry */
entry=ldap_first_entry(ldap_struct, result);
if (name != NULL)
{
DEBUG(0,("get_ldappwd_entry: Found user: %s\n",name));
if (name[strlen(name)-1]=='$')
machine=True;
else
machine=False;
}
if (machine==False)
{
if (ldap_check_user(ldap_struct, entry)==True)
ldap_get_user(ldap_struct, entry, &ldap_passwd);
}
else
{
if (ldap_check_machine(ldap_struct, entry)==True)
ldap_get_machine(ldap_struct, entry, &ldap_passwd);
}
ldap_msgfree(result);
result=NULL;
ldap_unbind(ldap_struct);
return(&ldap_passwd);
}
/************************************************************************
Routine to add an entry to the ldap passwd file.
do not call this function directly. use passdb.c instead.
*************************************************************************/
BOOL add_ldappwd_entry(struct smb_passwd *newpwd)
{
return True;
}
/************************************************************************
Routine to search the ldap passwd file for an entry matching the username.
and then modify its password entry. We can't use the startldappwent()/
getldappwent()/endldappwent() interfaces here as we depend on looking
in the actual file to decide how much room we have to write data.
override = False, normal
override = True, override XXXXXXXX'd out password or NO PASS
do not call this function directly. use passdb.c instead.
************************************************************************/
BOOL mod_ldappwd_entry(struct smb_passwd* pwd, BOOL override)
{
return False;
}
/************************************************************************
Routine to search ldap passwd by name.
do not call this function directly. use passdb.c instead.
*************************************************************************/
struct smb_passwd *getldappwnam(char *name)
{
return get_ldappwd_entry(name, 0);
}
/************************************************************************
Routine to search ldap passwd by uid.
do not call this function directly. use passdb.c instead.
*************************************************************************/
struct smb_passwd *getldappwuid(unsigned int uid)
{
return get_ldappwd_entry(NULL, uid);
}
/***************************************************************
Start to enumerate the ldap passwd list. Returns a void pointer
to ensure no modification outside this module.
do not call this function directly. use passdb.c instead.
****************************************************************/
void *startldappwent(BOOL update)
{
return NULL;
}
/***************************************************************
End enumeration of the ldap passwd list.
****************************************************************/
void endldappwent(void *vp)
{
}
/*************************************************************************
Routine to return the next entry in the ldap passwd list.
do not call this function directly. use passdb.c instead.
*************************************************************************/
struct smb_passwd *getldappwent(void *vp)
{
return NULL;
}
/*************************************************************************
Return the current position in the ldap passwd list as an unsigned long.
This must be treated as an opaque token.
do not call this function directly. use passdb.c instead.
*************************************************************************/
unsigned long getldappwpos(void *vp)
{
return 0;
}
/*************************************************************************
Set the current position in the ldap passwd list from unsigned long.
This must be treated as an opaque token.
do not call this function directly. use passdb.c instead.
*************************************************************************/
BOOL setldappwpos(void *vp, unsigned long tok)
{
return False;
}
#endif
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