From 8daa83a594a2e98f39d764422bfbdbc62c9efd44 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 19:20:00 +0200
Subject: Adding upstream version 2:4.20.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 source3/libads/ldap_schema.c | 354 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 354 insertions(+)
 create mode 100644 source3/libads/ldap_schema.c

(limited to 'source3/libads/ldap_schema.c')

diff --git a/source3/libads/ldap_schema.c b/source3/libads/ldap_schema.c
new file mode 100644
index 0000000..d2f486e
--- /dev/null
+++ b/source3/libads/ldap_schema.c
@@ -0,0 +1,354 @@
+/*
+   Unix SMB/CIFS implementation.
+   ads (active directory) utility library
+   Copyright (C) Guenther Deschner 2005-2007
+   Copyright (C) Gerald (Jerry) Carter 2006
+
+   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 "ads.h"
+#include "libads/ldap_schema.h"
+#include "libads/ldap_schema_oids.h"
+#include "../libcli/ldap/ldap_ndr.h"
+
+#ifdef HAVE_LDAP
+
+static ADS_STATUS ads_get_attrnames_by_oids(ADS_STRUCT *ads,
+					    TALLOC_CTX *mem_ctx,
+					    const char *schema_path,
+					    const char **OIDs,
+					    size_t num_OIDs,
+					    char ***OIDs_out, char ***names,
+					    size_t *count)
+{
+	ADS_STATUS status;
+	LDAPMessage *res = NULL;
+	LDAPMessage *msg;
+	char *expr = NULL;
+	const char *attrs[] = { "lDAPDisplayName", "attributeId", NULL };
+	int i = 0, p = 0;
+
+	if (!ads || !mem_ctx || !names || !count || !OIDs || !OIDs_out) {
+		return ADS_ERROR(LDAP_PARAM_ERROR);
+	}
+
+	if (num_OIDs == 0 || OIDs[0] == NULL) {
+		return ADS_ERROR_NT(NT_STATUS_NONE_MAPPED);
+	}
+
+	expr = talloc_asprintf(mem_ctx, "(|");
+
+	for (i=0; i<num_OIDs; i++) {
+		talloc_asprintf_addbuf(&expr, "(attributeId=%s)", OIDs[i]);
+	}
+
+	talloc_asprintf_addbuf(&expr, ")");
+	if (expr == NULL) {
+		return ADS_ERROR(LDAP_NO_MEMORY);
+	}
+
+	status = ads_do_search_retry(ads, schema_path,
+				     LDAP_SCOPE_SUBTREE, expr, attrs, &res);
+	if (!ADS_ERR_OK(status)) {
+		return status;
+	}
+
+	*count = ads_count_replies(ads, res);
+	if (*count == 0 || !res) {
+		status = ADS_ERROR_NT(NT_STATUS_NONE_MAPPED);
+		goto out;
+	}
+
+	if (((*names) = talloc_array(mem_ctx, char *, *count)) == NULL) {
+		status = ADS_ERROR(LDAP_NO_MEMORY);
+		goto out;
+	}
+	if (((*OIDs_out) = talloc_array(mem_ctx, char *, *count)) == NULL) {
+		status = ADS_ERROR(LDAP_NO_MEMORY);
+		goto out;
+	}
+
+	for (msg = ads_first_entry(ads, res); msg != NULL;
+	     msg = ads_next_entry(ads, msg)) {
+
+		(*names)[p] 	= ads_pull_string(ads, mem_ctx, msg,
+						  "lDAPDisplayName");
+		(*OIDs_out)[p] 	= ads_pull_string(ads, mem_ctx, msg,
+						  "attributeId");
+		if (((*names)[p] == NULL) || ((*OIDs_out)[p] == NULL)) {
+			status = ADS_ERROR(LDAP_NO_MEMORY);
+			goto out;
+		}
+
+		p++;
+	}
+
+	if (*count < num_OIDs) {
+		status = ADS_ERROR_NT(STATUS_SOME_UNMAPPED);
+		goto out;
+	}
+
+	status = ADS_ERROR(LDAP_SUCCESS);
+out:
+	ads_msgfree(ads, res);
+
+	return status;
+}
+
+const char *ads_get_attrname_by_guid(ADS_STRUCT *ads,
+				     const char *schema_path,
+				     TALLOC_CTX *mem_ctx,
+				     const struct GUID *schema_guid)
+{
+	ADS_STATUS rc;
+	LDAPMessage *res = NULL;
+	char *expr = NULL;
+	const char *attrs[] = { "lDAPDisplayName", NULL };
+	const char *result = NULL;
+	char *guid_bin = NULL;
+
+	if (!ads || !mem_ctx || !schema_guid) {
+		goto done;
+	}
+
+	guid_bin = ldap_encode_ndr_GUID(mem_ctx, schema_guid);
+	if (!guid_bin) {
+		goto done;
+	}
+
+	expr = talloc_asprintf(mem_ctx, "(schemaIDGUID=%s)", guid_bin);
+	if (!expr) {
+		goto done;
+	}
+
+	rc = ads_do_search_retry(ads, schema_path, LDAP_SCOPE_SUBTREE,
+				 expr, attrs, &res);
+	if (!ADS_ERR_OK(rc)) {
+		goto done;
+	}
+
+	if (ads_count_replies(ads, res) != 1) {
+		goto done;
+	}
+
+	result = ads_pull_string(ads, mem_ctx, res, "lDAPDisplayName");
+
+ done:
+	TALLOC_FREE(guid_bin);
+	ads_msgfree(ads, res);
+	return result;
+
+}
+
+/*********************************************************************
+*********************************************************************/
+
+ADS_STATUS ads_schema_path(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, char **schema_path)
+{
+	ADS_STATUS status;
+	LDAPMessage *res;
+	const char *schema;
+	const char *attrs[] = { "schemaNamingContext", NULL };
+
+	status = ads_do_search(ads, "", LDAP_SCOPE_BASE, "(objectclass=*)", attrs, &res);
+	if (!ADS_ERR_OK(status)) {
+		return status;
+	}
+
+	if ( (schema = ads_pull_string(ads, mem_ctx, res, "schemaNamingContext")) == NULL ) {
+		ads_msgfree(ads, res);
+		return ADS_ERROR(LDAP_NO_RESULTS_RETURNED);
+	}
+
+	if ( (*schema_path = talloc_strdup(mem_ctx, schema)) == NULL ) {
+		ads_msgfree(ads, res);
+		return ADS_ERROR(LDAP_NO_MEMORY);
+	}
+
+	ads_msgfree(ads, res);
+
+	return status;
+}
+
+/**
+ * Check for "Services for Unix" or rfc2307 Schema and load some attributes into the ADS_STRUCT
+ * @param ads connection to ads server
+ * @param enum mapping type
+ * @return ADS_STATUS status of search (False if one or more attributes couldn't be
+ * found in Active Directory)
+ **/
+ADS_STATUS ads_check_posix_schema_mapping(TALLOC_CTX *mem_ctx,
+					  ADS_STRUCT *ads,
+					  enum wb_posix_mapping map_type,
+					  struct posix_schema **s )
+{
+	TALLOC_CTX *ctx = NULL;
+	ADS_STATUS status;
+	char **oids_out, **names_out;
+	size_t num_names;
+	char *schema_path = NULL;
+	int i;
+	struct posix_schema *schema = NULL;
+
+	const char *oids_sfu[] = { 	ADS_ATTR_SFU_UIDNUMBER_OID,
+					ADS_ATTR_SFU_GIDNUMBER_OID,
+					ADS_ATTR_SFU_HOMEDIR_OID,
+					ADS_ATTR_SFU_SHELL_OID,
+					ADS_ATTR_SFU_GECOS_OID,
+					ADS_ATTR_SFU_UID_OID };
+
+	const char *oids_sfu20[] = { 	ADS_ATTR_SFU20_UIDNUMBER_OID,
+					ADS_ATTR_SFU20_GIDNUMBER_OID,
+					ADS_ATTR_SFU20_HOMEDIR_OID,
+					ADS_ATTR_SFU20_SHELL_OID,
+					ADS_ATTR_SFU20_GECOS_OID,
+					ADS_ATTR_SFU20_UID_OID };
+
+	const char *oids_rfc2307[] = {	ADS_ATTR_RFC2307_UIDNUMBER_OID,
+					ADS_ATTR_RFC2307_GIDNUMBER_OID,
+					ADS_ATTR_RFC2307_HOMEDIR_OID,
+					ADS_ATTR_RFC2307_SHELL_OID,
+					ADS_ATTR_RFC2307_GECOS_OID,
+					ADS_ATTR_RFC2307_UID_OID };
+
+	DEBUG(10,("ads_check_posix_schema_mapping for schema mode: %d\n", map_type));
+
+	switch (map_type) {
+
+		case WB_POSIX_MAP_TEMPLATE:
+		case WB_POSIX_MAP_UNIXINFO:
+			DEBUG(10,("ads_check_posix_schema_mapping: nothing to do\n"));
+			return ADS_ERROR(LDAP_SUCCESS);
+
+		case WB_POSIX_MAP_SFU:
+		case WB_POSIX_MAP_SFU20:
+		case WB_POSIX_MAP_RFC2307:
+			break;
+
+		default:
+			DEBUG(0,("ads_check_posix_schema_mapping: "
+				 "unknown enum %d\n", map_type));
+			return ADS_ERROR(LDAP_PARAM_ERROR);
+	}
+
+	if ( (ctx = talloc_init("ads_check_posix_schema_mapping")) == NULL ) {
+		return ADS_ERROR(LDAP_NO_MEMORY);
+	}
+
+	if ( (schema = talloc(mem_ctx, struct posix_schema)) == NULL ) {
+		TALLOC_FREE( ctx );
+		return ADS_ERROR(LDAP_NO_MEMORY);
+	}
+
+	status = ads_schema_path(ads, ctx, &schema_path);
+	if (!ADS_ERR_OK(status)) {
+		DEBUG(3,("ads_check_posix_mapping: Unable to retrieve schema DN!\n"));
+		goto done;
+	}
+
+	switch (map_type) {
+		case WB_POSIX_MAP_SFU:
+			status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu,
+							   ARRAY_SIZE(oids_sfu),
+							   &oids_out, &names_out, &num_names);
+			break;
+		case WB_POSIX_MAP_SFU20:
+			status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu20,
+							   ARRAY_SIZE(oids_sfu20),
+							   &oids_out, &names_out, &num_names);
+			break;
+		case WB_POSIX_MAP_RFC2307:
+			status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_rfc2307,
+							   ARRAY_SIZE(oids_rfc2307),
+							   &oids_out, &names_out, &num_names);
+			break;
+		default:
+			status = ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+			break;
+	}
+
+	if (!ADS_ERR_OK(status)) {
+		DEBUG(3,("ads_check_posix_schema_mapping: failed %s\n",
+			ads_errstr(status)));
+		goto done;
+	}
+
+	for (i=0; i<num_names; i++) {
+
+		DEBUGADD(10,("\tOID %s has name: %s\n", oids_out[i], names_out[i]));
+
+		if (strequal(ADS_ATTR_RFC2307_UIDNUMBER_OID, oids_out[i]) ||
+		    strequal(ADS_ATTR_SFU_UIDNUMBER_OID, oids_out[i]) ||
+		    strequal(ADS_ATTR_SFU20_UIDNUMBER_OID, oids_out[i])) {
+			schema->posix_uidnumber_attr = talloc_strdup(schema, names_out[i]);
+			continue;
+		}
+
+		if (strequal(ADS_ATTR_RFC2307_GIDNUMBER_OID, oids_out[i]) ||
+		    strequal(ADS_ATTR_SFU_GIDNUMBER_OID, oids_out[i]) ||
+		    strequal(ADS_ATTR_SFU20_GIDNUMBER_OID, oids_out[i])) {
+			schema->posix_gidnumber_attr = talloc_strdup(schema, names_out[i]);
+			continue;
+		}
+
+		if (strequal(ADS_ATTR_RFC2307_HOMEDIR_OID, oids_out[i]) ||
+		    strequal(ADS_ATTR_SFU_HOMEDIR_OID, oids_out[i]) ||
+		    strequal(ADS_ATTR_SFU20_HOMEDIR_OID, oids_out[i])) {
+			schema->posix_homedir_attr = talloc_strdup(schema, names_out[i]);
+			continue;
+		}
+
+		if (strequal(ADS_ATTR_RFC2307_SHELL_OID, oids_out[i]) ||
+		    strequal(ADS_ATTR_SFU_SHELL_OID, oids_out[i]) ||
+		    strequal(ADS_ATTR_SFU20_SHELL_OID, oids_out[i])) {
+			schema->posix_shell_attr = talloc_strdup(schema, names_out[i]);
+			continue;
+		}
+
+		if (strequal(ADS_ATTR_RFC2307_GECOS_OID, oids_out[i]) ||
+		    strequal(ADS_ATTR_SFU_GECOS_OID, oids_out[i]) ||
+		    strequal(ADS_ATTR_SFU20_GECOS_OID, oids_out[i])) {
+			schema->posix_gecos_attr = talloc_strdup(schema, names_out[i]);
+		}
+
+		if (strequal(ADS_ATTR_RFC2307_UID_OID, oids_out[i]) ||
+		    strequal(ADS_ATTR_SFU_UID_OID, oids_out[i]) ||
+		    strequal(ADS_ATTR_SFU20_UID_OID, oids_out[i])) {
+			schema->posix_uid_attr = talloc_strdup(schema, names_out[i]);
+		}
+	}
+
+	if (!schema->posix_uidnumber_attr ||
+	    !schema->posix_gidnumber_attr ||
+	    !schema->posix_homedir_attr ||
+	    !schema->posix_shell_attr ||
+	    !schema->posix_gecos_attr) {
+	    	status = ADS_ERROR(LDAP_NO_MEMORY);
+	        TALLOC_FREE( schema );
+	    	goto done;
+	}
+
+	*s = schema;
+
+	status = ADS_ERROR(LDAP_SUCCESS);
+
+done:
+	TALLOC_FREE(ctx);
+
+	return status;
+}
+
+#endif
-- 
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