This is another *BIG* change...

Samba now features a pluggable passdb interface, along the same lines as the
one in use in the auth subsystem.  In this case, only one backend may be active
at a time by the 'normal' interface, and only one backend per passdb_context is
permitted outside that.

This pluggable interface is designed to allow any number of passdb backends to
be compiled in, with the selection at runtime.  The 'passdb backend' paramater
has been created (and documented!) to support this.

As such, configure has been modfied to allow (for example) --with-ldap and the
old smbpasswd to be selected at the same time.

This patch also introduces two new backends:  smbpasswd_nua and tdbsam_nua.
These two backends accept 'non unix accounts', where the user does *not* exist
in /etc/passwd.  These accounts' don't have UIDs in the unix sense, but to
avoid conflicts in the algroitmic mapping of RIDs, they use the values
specified in the 'non unix account range' paramter - in the same way as the
winbind ranges are specifed.

While I was at it, I cleaned up some of the code in pdb_tdb (code copied
directly from smbpasswd and not really considered properly).  Most of this was
to do with % macro expansion on stored data.  It isn't easy to get the macros
into the tdb, and the first password change will 'expand' them.  tdbsam needs
to use a similar system to pdb_ldap in this regard.

This patch only makes minor adjustments to pdb_nisplus and pdb_ldap, becouse I
don't have the test facilities for these.  I plan to incoroprate at least
pdb_ldap into this scheme after consultation with Jerry.

Each (converted) passdb module now no longer has any 'static' variables, and
only exports 1 init function outside its .c file.

The non-unix-account support in this patch has been proven!  It is now possible
to join a win2k machine to a Samba PDC without an account in /etc/passwd!

Other changes:

Minor interface adjustments:
pdb_delete_sam_account() now takes a SAM_ACCOUNT, not a char*.

pdb_update_sam_account() no longer takes the 'override' argument that was being
ignored so often (every other passdb backend).  Extra checks have been added in
some places.

Minor code changes:
smbpasswd no longer attempts to initialise the passdb at startup, this is
now done on first use.

pdbedit has lost some of its 'machine account' logic, as this behaviour is now
controlled by the passdb subsystem directly.

The samr subsystem no longer calls 'local password change', but does the pdb
interactions directly.  This allow the ACB_ flags specifed to be transferred
direct to the backend, without interference.

Doco:

I've updated the doco to reflect some of the changes, and removed some paramters
no longer applicable to HEAD.

1 files changed, 42 insertions, 1 deletions

diff --git a/source/param/loadparm.c b/source/param/loadparm.c
index fce5fcde498..af8a5df897a 100644
--- a/source/param/loadparm.c
+++ b/source/param/loadparm.c
@@ -111,6 +111,7 @@ typedef struct
 	char *szSMBPasswdFile;
 	char *szPrivateDir;
 	char *szPassdbModulePath;
+	char *szPassdbBackend;
 	char *szPasswordServer;
 	char *szSocketOptions;
 	char *szWorkGroup;
@@ -150,6 +151,7 @@ typedef struct
 	char *szSourceEnv;
 	char *szWinbindUID;
 	char *szWinbindGID;
+	char *szNonUnixAccountRange;
 	char *szTemplateHomedir;
 	char *szTemplateShell;
 	char *szWinbindSeparator;
@@ -525,6 +527,7 @@ static BOOL handle_source_env(char *pszParmValue, char **ptr);
 static BOOL handle_netbios_name(char *pszParmValue, char **ptr);
 static BOOL handle_winbind_uid(char *pszParmValue, char **ptr);
 static BOOL handle_winbind_gid(char *pszParmValue, char **ptr);
+static BOOL handle_non_unix_account_range(char *pszParmValue, char **ptr);
 static BOOL handle_wins_server_list(char *pszParmValue, char **ptr);
 static BOOL handle_debug_list( char *pszParmValue, char **ptr );
 
@@ -693,6 +696,8 @@ static struct parm_struct parm_table[] = {
 	{"smb passwd file", P_STRING, P_GLOBAL, &Globals.szSMBPasswdFile, NULL, NULL, 0},
 	{"private dir", P_STRING, P_GLOBAL, &Globals.szPrivateDir, NULL, NULL, 0},
 	{"passdb module path", P_STRING, P_GLOBAL, &Globals.szPassdbModulePath, NULL, NULL, 0},
+	{"passdb backend", P_STRING, P_GLOBAL, &Globals.szPassdbBackend, NULL, NULL, 0},
+	{"non unix account range", P_STRING, P_GLOBAL, &Globals.szNonUnixAccountRange, handle_non_unix_account_range, NULL, 0},
 	{"root directory", P_STRING, P_GLOBAL, &Globals.szRootdir, NULL, NULL, 0},
 	{"root dir", P_STRING, P_GLOBAL, &Globals.szRootdir, NULL, NULL, 0},
 	{"root", P_STRING, P_GLOBAL, &Globals.szRootdir, NULL, NULL, 0},
@@ -1200,6 +1205,7 @@ static void init_globals(void)
 	string_set(&Globals.szSMBPasswdFile, dyn_SMB_PASSWD_FILE);
 	string_set(&Globals.szPrivateDir, dyn_PRIVATE_DIR);
 	string_set(&Globals.szPassdbModulePath, "");
+	string_set(&Globals.szPassdbBackend, "smbpasswd");
 
 	string_set(&Globals.szGuestaccount, GUEST_ACCOUNT);
 
@@ -1454,6 +1460,7 @@ FN_GLOBAL_STRING(lp_configfile, &Globals.szConfigFile)
 FN_GLOBAL_STRING(lp_smb_passwd_file, &Globals.szSMBPasswdFile)
 FN_GLOBAL_STRING(lp_private_dir, &Globals.szPrivateDir)
 FN_GLOBAL_STRING(lp_passdb_module_path, &Globals.szPassdbModulePath)
+FN_GLOBAL_STRING(lp_passdb_backend, &Globals.szPassdbBackend)
 FN_GLOBAL_STRING(lp_serverstring, &Globals.szServerString)
 FN_GLOBAL_STRING(lp_printcapname, &Globals.szPrintcapname)
 FN_GLOBAL_STRING(lp_enumports_cmd, &Globals.szEnumPortsCommand)
@@ -2444,7 +2451,7 @@ static BOOL handle_copy(char *pszParmValue, char **ptr)
 }
 
 /***************************************************************************
- Handle winbind uid and gid allocation parameters.  The format of these
+ Handle winbind/non unix account uid and gid allocation parameters.  The format of these
  parameters is:
 
  [global]
@@ -2461,6 +2468,7 @@ static BOOL handle_copy(char *pszParmValue, char **ptr)
 
 static uid_t winbind_uid_low, winbind_uid_high;
 static gid_t winbind_gid_low, winbind_gid_high;
+static uint32 non_unix_account_low, non_unix_account_high;
 
 BOOL lp_winbind_uid(uid_t *low, uid_t *high)
 {
@@ -2490,6 +2498,20 @@ BOOL lp_winbind_gid(gid_t *low, gid_t *high)
         return True;
 }
 
+BOOL lp_non_unix_account_range(uint32 *low, uint32 *high)
+{
+        if (non_unix_account_low == 0 || non_unix_account_high == 0)
+                return False;
+
+        if (low)
+                *low = non_unix_account_low;
+
+        if (high)
+                *high = non_unix_account_high;
+
+        return True;
+}
+
 /* Do some simple checks on "winbind [ug]id" parameter values */
 
 static BOOL handle_winbind_uid(char *pszParmValue, char **ptr)
@@ -2526,6 +2548,25 @@ static BOOL handle_winbind_gid(char *pszParmValue, char **ptr)
 	return True;
 }
 
+/* Do some simple checks on "non unix account range" parameter values */
+
+static BOOL handle_non_unix_account_range(char *pszParmValue, char **ptr)
+{
+	uint32 low, high;
+
+	if (sscanf(pszParmValue, "%u-%u", &low, &high) != 2 || high < low)
+		return False;
+
+	/* Parse OK */
+
+	string_set(ptr, pszParmValue);
+
+        non_unix_account_low = low;
+        non_unix_account_high = high;
+
+	return True;
+}
+
 /***************************************************************************
  Handle the WINS SERVER list
 ***************************************************************************/