1 files changed, 113 insertions, 0 deletions
diff --git a/source3/libads/util.c b/source3/libads/util.c
new file mode 100644
index 0000000000..72f5dee80c
--- /dev/null
+++ b/source3/libads/util.c
@@ -0,0 +1,113 @@
+/* 
+   Unix SMB/CIFS implementation.
+   krb5 set password implementation
+   Copyright (C) Remus Koos 2001 (remuskoos@yahoo.com)
+   
+   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"
+
+#ifdef HAVE_KRB5
+
+ADS_STATUS ads_change_trust_account_password(ADS_STRUCT *ads, char *host_principal)
+{
+	char *password;
+	char *new_password;
+	ADS_STATUS ret;
+	uint32 sec_channel_type;
+    
+	if ((password = secrets_fetch_machine_password(lp_workgroup(), NULL, &sec_channel_type)) == NULL) {
+		DEBUG(1,("Failed to retrieve password for principal %s\n", host_principal));
+		return ADS_ERROR_SYSTEM(ENOENT);
+	}
+
+	new_password = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
+    
+	ret = kerberos_set_password(ads->auth.kdc_server, host_principal, password, host_principal, new_password, ads->auth.time_offset);
+
+	if (!ADS_ERR_OK(ret)) {
+		goto failed;
+	}
+
+	if (!secrets_store_machine_password(new_password, lp_workgroup(), sec_channel_type)) {
+		DEBUG(1,("Failed to save machine password\n"));
+		ret = ADS_ERROR_SYSTEM(EACCES);
+		goto failed;
+	}
+
+failed:
+	SAFE_FREE(password);
+	return ret;
+}
+
+ADS_STATUS ads_guess_service_principal(ADS_STRUCT *ads,
+				       char **returned_principal)
+{
+	char *princ = NULL;
+
+	if (ads->server.realm && ads->server.ldap_server) {
+		char *server, *server_realm;
+
+		server = SMB_STRDUP(ads->server.ldap_server);
+		server_realm = SMB_STRDUP(ads->server.realm);
+
+		if (!server || !server_realm) {
+			SAFE_FREE(server);
+			SAFE_FREE(server_realm);
+			return ADS_ERROR(LDAP_NO_MEMORY);
+		}
+
+		strlower_m(server);
+		strupper_m(server_realm);
+		asprintf(&princ, "ldap/%s@%s", server, server_realm);
+
+		SAFE_FREE(server);
+		SAFE_FREE(server_realm);
+
+		if (!princ) {
+			return ADS_ERROR(LDAP_NO_MEMORY);
+		}
+	} else if (ads->config.realm && ads->config.ldap_server_name) {
+		char *server, *server_realm;
+
+		server = SMB_STRDUP(ads->config.ldap_server_name);
+		server_realm = SMB_STRDUP(ads->config.realm);
+
+		if (!server || !server_realm) {
+			return ADS_ERROR(LDAP_NO_MEMORY);
+		}
+
+		strlower_m(server);
+		strupper_m(server_realm);
+		asprintf(&princ, "ldap/%s@%s", server, server_realm);
+
+		SAFE_FREE(server);
+		SAFE_FREE(server_realm);
+
+		if (!princ) {
+			return ADS_ERROR(LDAP_NO_MEMORY);
+		}
+	}
+
+	if (!princ) {
+		return ADS_ERROR(LDAP_PARAM_ERROR);
+	}
+
+	*returned_principal = princ;
+
+	return ADS_SUCCESS;
+}
+
+#endif