From 527aaf6def6b53c0e01fc5d8369b06be4237fca0 Mon Sep 17 00:00:00 2001 From: Andrew Bartlett Date: Fri, 22 Feb 2002 02:47:53 +0000 Subject: Add the pdb_plugin module from Jelmer Vernooij . This allow the user to select 'passdb backend = plugin : /path/to/plugin.so : pluging args' And load any arbitary plugin. Apparently Jelmer has a mysql plugin in the works - hence this patch. We probably need to rework the interface a bit before 3.0 (add versioning of some kind) but this is a good start. Andrew Bartlett (This used to be commit d6d18b70f0c377344b0b3d9df5a11d209793bfe0) --- source3/passdb/pdb_interface.c | 7 ++-- source3/passdb/pdb_plugin.c | 72 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 76 insertions(+), 3 deletions(-) create mode 100644 source3/passdb/pdb_plugin.c (limited to 'source3/passdb') diff --git a/source3/passdb/pdb_interface.c b/source3/passdb/pdb_interface.c index 13d483fc25..73532984b6 100644 --- a/source3/passdb/pdb_interface.c +++ b/source3/passdb/pdb_interface.c @@ -22,7 +22,7 @@ /** List of various built-in passdb modules */ -const struct pdb_init_function builtin_pdb_init_functions[] = { +const struct pdb_init_function_entry builtin_pdb_init_functions[] = { { "smbpasswd", pdb_init_smbpasswd }, { "smbpasswd_nua", pdb_init_smbpasswd_nua }, { "tdbsam", pdb_init_tdbsam }, @@ -32,6 +32,7 @@ const struct pdb_init_function builtin_pdb_init_functions[] = { { "nisplus", pdb_init_nisplus }, { "unix", pdb_init_unix }, #endif + { "plugin", pdb_init_plugin }, { NULL, NULL} }; @@ -198,7 +199,7 @@ NTSTATUS make_pdb_context_name(struct pdb_context **context, const char *selecte return nt_status; } - DEBUG(5,("Attempting to find an passdb backend to match %s\n", selected)); + DEBUG(5,("Attempting to find an passdb backend to match %s (%s)\n", selected, module_name)); for (i = 0; builtin_pdb_init_functions[i].name; i++) { if (strequal(builtin_pdb_init_functions[i].name, module_name)) @@ -214,7 +215,7 @@ NTSTATUS make_pdb_context_name(struct pdb_context **context, const char *selecte break; } } - + if (!(*context)->pdb_selected) { DEBUG(0,("failed to select passdb backed!\n")); talloc_destroy((*context)->mem_ctx); diff --git a/source3/passdb/pdb_plugin.c b/source3/passdb/pdb_plugin.c new file mode 100644 index 0000000000..4ea4245398 --- /dev/null +++ b/source3/passdb/pdb_plugin.c @@ -0,0 +1,72 @@ +/* + Unix SMB/CIFS implementation. + Loadable passdb module interface. + Copyright (C) Jelmer Vernooij 2002 + Copyright (C) Andrew Bartlett 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" + +#ifdef HAVE_LIBDL + +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; + + 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_string(plugin_location, " ", " "); + } else plugin_location = NULL; + trim_string(plugin_name, " ", " "); + + DEBUG(5, ("Trying to load sam plugin %s\n", plugin_name)); + dl_handle = sys_dlopen(plugin_name, RTLD_NOW | RTLD_GLOBAL ); + 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_init = sys_dlsym(dl_handle, "pdb_init"); + if (!plugin_init){ + 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); +} + +#else + +NTSTATUS pdb_init_plugin(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location) +{ + DEBUG(0, ("pdb_init_plugin: No libdl present - cannot use passdb loadable modules\n")); + return NT_STATUS_UNSUCCESSFUL; +} + +#endif -- cgit