Initial import

[samba] / source / passdb / pdb_plugin.c

diff --git a/source/passdb/pdb_plugin.c b/source/passdb/pdb_plugin.c
new file mode 100644 (file)
index 0000000..027cd0b
--- /dev/null
+++ b/source/passdb/pdb_plugin.c
@@ -0,0 +1,80 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Loadable passdb module interface.
+   Copyright (C) Jelmer Vernooij 2002
+   Copyright (C) Andrew Bartlett 2002
+      
+   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.
+*/
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_PASSDB
+
+NTSTATUS pdb_init_plugin(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
+{
+       void * dl_handle;
+       char *plugin_location, *plugin_name, *p;
+       pdb_init_function plugin_init;
+       int (*plugin_version)(void);
+
+       if (location == NULL) {
+               DEBUG(0, ("The plugin module needs an argument!\n"));
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       plugin_name = smb_xstrdup(location);
+       p = strchr(plugin_name, ':');
+       if (p) {
+               *p = 0;
+               plugin_location = p+1;
+               trim_char(plugin_location, ' ', ' ');
+       } else {
+               plugin_location = NULL;
+       }
+       trim_char(plugin_name, ' ', ' ');
+
+       DEBUG(5, ("Trying to load sam plugin %s\n", plugin_name));
+       dl_handle = sys_dlopen(plugin_name, RTLD_NOW );
+       if (!dl_handle) {
+               DEBUG(0, ("Failed to load sam plugin %s using sys_dlopen (%s)\n", plugin_name, sys_dlerror()));
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+    
+       plugin_version = sys_dlsym(dl_handle, "pdb_version");
+       if (!plugin_version) {
+               sys_dlclose(dl_handle);
+               DEBUG(0, ("Failed to find function 'pdb_version' using sys_dlsym in sam plugin %s (%s)\n", plugin_name, sys_dlerror()));            
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       if (plugin_version() != PASSDB_INTERFACE_VERSION) {
+               sys_dlclose(dl_handle);
+               DEBUG(0, ("Wrong PASSDB_INTERFACE_VERSION! sam plugin has version %d and version %d is needed! Please update!\n",
+                           plugin_version(),PASSDB_INTERFACE_VERSION));
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+                                       
+       plugin_init = sys_dlsym(dl_handle, "pdb_init");
+       if (!plugin_init) {
+               sys_dlclose(dl_handle);
+               DEBUG(0, ("Failed to find function 'pdb_init' using sys_dlsym in sam plugin %s (%s)\n", plugin_name, sys_dlerror()));       
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       DEBUG(5, ("Starting sam plugin %s with location %s\n", plugin_name, plugin_location));
+       return plugin_init(pdb_context, pdb_method, plugin_location);
+}