r25154: move winbindd code into winbindd/

metze
(This used to be commit 3ac7566ae14c48ff9b0f6b232e0ec4b2f73df558)

1 files changed, 267 insertions, 0 deletions

diff --git a/source3/winbindd/idmap_rid.c b/source3/winbindd/idmap_rid.c
new file mode 100644
index 0000000000..8e5f1302f7
--- /dev/null
+++ b/source3/winbindd/idmap_rid.c
@@ -0,0 +1,267 @@
+/*
+ *  idmap_rid: static map between Active Directory/NT RIDs and RFC 2307 accounts
+ *  Copyright (C) Guenther Deschner, 2004
+ *  Copyright (C) Sumit Bose, 2004
+ *
+ *  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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "includes.h"
+#include "winbindd.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_IDMAP
+
+struct idmap_rid_context {
+	const char *domain_name;
+	uint32_t low_id;
+	uint32_t high_id;
+	uint32_t base_rid;
+};
+
+/******************************************************************************
+  compat params can't be used because of the completely different way
+  we support multiple domains in the new idmap
+ *****************************************************************************/
+
+static NTSTATUS idmap_rid_initialize(struct idmap_domain *dom)
+{
+	NTSTATUS ret;
+	struct idmap_rid_context *ctx;
+	char *config_option = NULL;
+	const char *range;
+	uid_t low_uid = 0;
+	uid_t high_uid = 0;
+	gid_t low_gid = 0;
+	gid_t high_gid = 0;
+
+	if ( (ctx = TALLOC_ZERO_P(dom, struct idmap_rid_context)) == NULL ) {
+		DEBUG(0, ("Out of memory!\n"));
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	config_option = talloc_asprintf(ctx, "idmap config %s", dom->name);
+	if ( ! config_option) {
+		DEBUG(0, ("Out of memory!\n"));
+		ret = NT_STATUS_NO_MEMORY;
+		goto failed;
+	}
+
+	range = lp_parm_const_string(-1, config_option, "range", NULL);
+	if ( !range ||
+	    (sscanf(range, "%u - %u", &ctx->low_id, &ctx->high_id) != 2) ||
+	    (ctx->low_id > ctx->high_id)) 
+	{
+		ctx->low_id = 0;
+		ctx->high_id = 0;
+	}
+
+	/* lets see if the range is defined by the old idmap uid/idmap gid */
+	if (!ctx->low_id && !ctx->high_id) {
+		if (lp_idmap_uid(&low_uid, &high_uid)) {
+			ctx->low_id = low_uid;
+			ctx->high_id = high_uid;
+		}
+
+		if (lp_idmap_gid(&low_gid, &high_gid)) {
+			if ((ctx->low_id != low_gid) ||
+			    (ctx->high_id != high_uid)) {
+				DEBUG(1, ("ERROR: idmap uid range must match idmap gid range\n"));
+				ret = NT_STATUS_UNSUCCESSFUL;
+				goto failed;
+			}
+		}
+	}
+
+	if (!ctx->low_id || !ctx->high_id) {
+		DEBUG(1, ("ERROR: Invalid configuration, ID range missing or invalid\n"));
+		ret = NT_STATUS_UNSUCCESSFUL;
+		goto failed;
+	}
+
+	ctx->base_rid = lp_parm_int(-1, config_option, "base_rid", 0);
+	ctx->domain_name = talloc_strdup( ctx, dom->name );
+	
+	dom->private_data = ctx;
+	dom->initialized = True;
+
+	talloc_free(config_option);
+	return NT_STATUS_OK;
+
+failed:
+	talloc_free(ctx);
+	return ret;
+}
+
+static NTSTATUS idmap_rid_id_to_sid(TALLOC_CTX *memctx, struct idmap_rid_context *ctx, struct id_map *map)
+{
+	struct winbindd_domain *domain;	
+
+	/* apply filters before checking */
+	if ((map->xid.id < ctx->low_id) || (map->xid.id > ctx->high_id)) {
+		DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
+				map->xid.id, ctx->low_id, ctx->high_id));
+		return NT_STATUS_NONE_MAPPED;
+	}
+
+	if ( (domain = find_domain_from_name_noinit(ctx->domain_name)) == NULL ) {
+		return NT_STATUS_NO_SUCH_DOMAIN;
+	}
+	
+	sid_compose(map->sid, &domain->sid, map->xid.id - ctx->low_id + ctx->base_rid);
+
+	/* We **really** should have some way of validating 
+	   the SID exists and is the correct type here.  But 
+	   that is a deficiency in the idmap_rid design. */
+
+	map->status = ID_MAPPED;
+
+	return NT_STATUS_OK;
+}
+
+/**********************************
+ Single sid to id lookup function. 
+**********************************/
+
+static NTSTATUS idmap_rid_sid_to_id(TALLOC_CTX *memctx, struct idmap_rid_context *ctx, struct id_map *map)
+{
+	uint32_t rid;
+
+	sid_peek_rid(map->sid, &rid);
+	map->xid.id = rid - ctx->base_rid + ctx->low_id;
+
+	/* apply filters before returning result */
+
+	if ((map->xid.id < ctx->low_id) || (map->xid.id > ctx->high_id)) {
+		DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
+				map->xid.id, ctx->low_id, ctx->high_id));
+		map->status = ID_UNMAPPED;
+		return NT_STATUS_NONE_MAPPED;
+	}
+
+	/* We **really** should have some way of validating 
+	   the SID exists and is the correct type here.  But 
+	   that is a deficiency in the idmap_rid design. */
+
+	map->status = ID_MAPPED;
+
+	return NT_STATUS_OK;
+}
+
+/**********************************
+ lookup a set of unix ids. 
+**********************************/
+
+static NTSTATUS idmap_rid_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
+{
+	struct idmap_rid_context *ridctx;
+	TALLOC_CTX *ctx;
+	NTSTATUS ret;
+	int i;
+
+	/* Initilization my have been deferred because of an error, retry or fail */
+	if ( ! dom->initialized) {
+		ret = idmap_rid_initialize(dom);
+		if ( ! NT_STATUS_IS_OK(ret)) {
+			return ret;
+		}
+	}
+
+	ridctx = talloc_get_type(dom->private_data, struct idmap_rid_context);
+
+	ctx = talloc_new(dom);
+	if ( ! ctx) {
+		DEBUG(0, ("Out of memory!\n"));
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	for (i = 0; ids[i]; i++) {
+
+		ret = idmap_rid_id_to_sid(ctx, ridctx, ids[i]);
+
+		if (( ! NT_STATUS_IS_OK(ret)) &&
+		    ( ! NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED))) {
+			/* some fatal error occurred, log it */
+			DEBUG(3, ("Unexpected error resolving an ID (%d)\n", ids[i]->xid.id));
+		}
+	}
+
+	talloc_free(ctx);
+	return NT_STATUS_OK;
+}
+
+/**********************************
+ lookup a set of sids. 
+**********************************/
+
+static NTSTATUS idmap_rid_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
+{
+	struct idmap_rid_context *ridctx;
+	TALLOC_CTX *ctx;
+	NTSTATUS ret;
+	int i;
+
+	/* Initilization my have been deferred because of an error, retry or fail */
+	if ( ! dom->initialized) {
+		ret = idmap_rid_initialize(dom);
+		if ( ! NT_STATUS_IS_OK(ret)) {
+			return ret;
+		}
+	}
+
+	ridctx = talloc_get_type(dom->private_data, struct idmap_rid_context);
+
+	ctx = talloc_new(dom);
+	if ( ! ctx) {
+		DEBUG(0, ("Out of memory!\n"));
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	for (i = 0; ids[i]; i++) {
+
+		ret = idmap_rid_sid_to_id(ctx, ridctx, ids[i]);
+
+		if (( ! NT_STATUS_IS_OK(ret)) &&
+		    ( ! NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED))) {
+			/* some fatal error occurred, log it */
+			DEBUG(3, ("Unexpected error resolving a SID (%s)\n",
+					sid_string_static(ids[i]->sid)));
+		}
+	}
+
+	talloc_free(ctx);
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS idmap_rid_close(struct idmap_domain *dom)
+{
+	if (dom->private_data) {
+		TALLOC_FREE(dom->private_data);
+	}
+	return NT_STATUS_OK;
+}
+
+static struct idmap_methods rid_methods = {
+	.init = idmap_rid_initialize,
+	.unixids_to_sids = idmap_rid_unixids_to_sids,
+	.sids_to_unixids = idmap_rid_sids_to_unixids,
+	.close_fn = idmap_rid_close
+};
+
+NTSTATUS idmap_rid_init(void)
+{
+	return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "rid", &rid_methods);
+}
+