jean-francois micouleau's well-alpha code for ldap password database stuff!

he's going to hate me for checking this in so early, but...
(This used to be commit ad9ba0a1cbac5c4e6cbcbcadefe8f1df72231f74)

1 files changed, 563 insertions, 0 deletions

diff --git a/source3/passdb/ldap.c b/source3/passdb/ldap.c
new file mode 100644
index 0000000000..fedc31cbfc
--- /dev/null
+++ b/source3/passdb/ldap.c
@@ -0,0 +1,563 @@
+/* 
+   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;
+	}
+}
+
+/*******************************************************************
+ find a user or a machine return a smbpass struct.
+******************************************************************/
+struct passwd *Get_ldap_Pwnam(char *user)
+{
+	LDAP *ldap_struct;
+	LDAPMessage *result;
+	LDAPMessage *entry;
+	char **valeur;
+	BOOL machine=False;
+	BOOL sambaAccount=False;
+	int i;
+	
+	static struct passwd ldap_passwd;
+	static char pw_name[256];
+	static char pw_passwd[256];
+	static char pw_gecos[256];
+	static char pw_dir[256];
+	static char pw_shell[256];
+	ldap_passwd.pw_name=pw_name;
+	ldap_passwd.pw_passwd=pw_passwd;
+	ldap_passwd.pw_gecos=pw_gecos;
+	ldap_passwd.pw_dir=pw_dir;
+	ldap_passwd.pw_shell=pw_shell;
+	
+	DEBUG(0,("XXXX XXXX XXXX, ca merde serieux!\n"));
+
+	/* first clear the struct */
+	bzero(pw_name,sizeof(pw_name));
+	bzero(pw_passwd,sizeof(pw_passwd));
+	bzero(pw_gecos,sizeof(pw_gecos));
+	bzero(pw_dir,sizeof(pw_dir));
+	bzero(pw_shell,sizeof(pw_shell));	
+	ldap_passwd.pw_uid=-1;
+	ldap_passwd.pw_gid=-1;
+
+	
+	ldap_open_connection(&ldap_struct);
+	
+	/* 
+	   to get all the attributes (specially the userPassword )
+	   we have to connect under the system administrator account
+	*/
+	ldap_connect_system(ldap_struct);
+	
+	ldap_search_one_user(ldap_struct, user, &result);
+
+	if (ldap_count_entries(ldap_struct, result) != 1)
+	{
+		DEBUG(0,("%s: Strange %d user in the base!\n",
+		         timestring(), ldap_count_entries(ldap_struct, result) ));
+		return(False);	
+	}
+	/* take the first and unique entry */
+	entry=ldap_first_entry(ldap_struct, result);
+
+	/* check what kind of account it is */
+	/* as jeremy doesn't want to split getpwnam in 2 functions :-( */
+
+	if (user[strlen(user)-1]=='$')
+	{
+		machine=True;
+	}
+
+	if (!machine)
+	{
+		valeur=ldap_get_values(ldap_struct,entry, "objectclass");
+
+		/* check if the entry is a person objectclass*/
+		if (valeur!=NULL)
+		for (i=0;valeur[i]!=NULL;i++)
+		{
+			if (!strcmp(valeur[i],"sambaAccount")) sambaAccount=True;
+		}
+		ldap_value_free(valeur);
+				
+		if (sambaAccount)
+		{
+		/* we should have enough info to fill the struct */
+			strncpy(ldap_passwd.pw_name,user,strlen(user));
+
+			valeur=ldap_get_values(ldap_struct,entry, "uidAccount");
+			if (valeur != NULL)
+			{
+				ldap_passwd.pw_uid=atoi(valeur[0]);
+			}
+			ldap_value_free(valeur);
+			
+			valeur=ldap_get_values(ldap_struct,entry, "gidAccount");
+			if (valeur != NULL)
+			{
+				ldap_passwd.pw_gid=atoi(valeur[0]);
+			}
+			ldap_value_free(valeur);
+
+			valeur=ldap_get_values(ldap_struct,entry, "userPassword");
+			if (valeur != NULL) 
+			{
+			/*
+			 as we have the clear-text password, we have to crypt it !
+			 hum hum hum currently pass the clear text password to wait
+			*/
+			strncpy(ldap_passwd.pw_passwd,valeur[0],strlen(valeur[0]));
+			}
+			ldap_value_free(valeur);
+			
+			valeur=ldap_get_values(ldap_struct,entry, "gecos");
+			if (valeur != NULL) 
+			{
+				strncpy(ldap_passwd.pw_gecos,valeur[0],strlen(valeur[0]));
+			}
+			ldap_value_free(valeur);
+			
+			valeur=ldap_get_values(ldap_struct,entry, "homeDirectory");
+			if (valeur != NULL) 
+			{
+				strncpy(ldap_passwd.pw_dir,valeur[0],strlen(valeur[0]));
+			}
+			ldap_value_free(valeur);
+
+			valeur=ldap_get_values(ldap_struct,entry, "loginShell");
+			if (valeur != NULL) 
+			{
+				strncpy(ldap_passwd.pw_shell,valeur[0],strlen(valeur[0]));
+			}
+			ldap_value_free(valeur);		
+		}
+	}
+	else
+	{
+	}
+
+	ldap_unbind(ldap_struct);	
+}
+
+/*******************************************************************
+ 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 smbpwd[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(smbpwd, '\0', 16);
+  		E_P16((uchar *) valeur[0], smbpwd);		
+		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=smbpwd;
+			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);
+	}
+}
+
+/*************************************************************
+ Routine to get the next 32 hex characters and turn them
+ into a 16 byte array.
+**************************************************************/
+
+static int gethexpwd(char *p, char *pwd)
+{
+  int i;
+  unsigned char   lonybble, hinybble;
+  char           *hexchars = "0123456789ABCDEF";
+  char           *p1, *p2;
+
+  for (i = 0; i < 32; i += 2) {
+    hinybble = toupper(p[i]);
+    lonybble = toupper(p[i + 1]);
+ 
+    p1 = strchr(hexchars, hinybble);
+    p2 = strchr(hexchars, lonybble);
+    if (!p1 || !p2)
+      return (False);
+    hinybble = PTR_DIFF(p1, hexchars);
+    lonybble = PTR_DIFF(p2, hexchars);
+ 
+    pwd[i / 2] = (hinybble << 4) | lonybble;
+  }
+  return (True);
+}
+
+/*******************************************************************
+ 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.
+******************************************************************/
+struct smb_passwd *ldap_get_smbpwd_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, ("ldap_get_smbpwd_entry: search by name: %s\n", name));
+	}
+	else 
+	{
+		DEBUG(10, ("ldap_get_smbpwd_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,("ldap_get_smbpwd_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);
+}
+#endif