net_vampire: separate keytab code from samsync code.

Guenther
(This used to be commit 69d8442bf3248f97ad23def424901d7fa87bfe48)

1 files changed, 143 insertions, 0 deletions

diff --git a/source3/libnet/libnet_keytab.c b/source3/libnet/libnet_keytab.c
new file mode 100644
index 0000000000..90595e76dd
--- /dev/null
+++ b/source3/libnet/libnet_keytab.c
@@ -0,0 +1,143 @@
+/*
+   Unix SMB/CIFS implementation.
+   dump the remote SAM using rpc samsync operations
+
+   Copyright (C) Guenther Deschner 2008.
+
+   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 "libnet/libnet.h"
+
+#ifdef HAVE_KRB5
+
+/****************************************************************
+****************************************************************/
+
+static int keytab_close(struct libnet_keytab_context *ctx)
+{
+	if (!ctx) {
+		return 0;
+	}
+
+	if (ctx->keytab && ctx->context) {
+		krb5_kt_close(ctx->context, ctx->keytab);
+	}
+
+	if (ctx->context) {
+		krb5_free_context(ctx->context);
+	}
+
+	if (ctx->ads) {
+		ads_destroy(&ctx->ads);
+	}
+
+	TALLOC_FREE(ctx);
+
+	return 0;
+}
+
+/****************************************************************
+****************************************************************/
+
+krb5_error_code libnet_keytab_init(TALLOC_CTX *mem_ctx,
+				   const char *keytab_name,
+				   struct libnet_keytab_context **ctx)
+{
+	krb5_error_code ret = 0;
+	krb5_context context = NULL;
+	krb5_keytab keytab = NULL;
+	const char *keytab_string = NULL;
+
+	struct libnet_keytab_context *r;
+
+	r = TALLOC_ZERO_P(mem_ctx, struct libnet_keytab_context);
+	if (!r) {
+		return ENOMEM;
+	}
+
+	talloc_set_destructor(r, keytab_close);
+
+	initialize_krb5_error_table();
+	ret = krb5_init_context(&context);
+	if (ret) {
+		DEBUG(1,("keytab_init: could not krb5_init_context: %s\n",
+			error_message(ret)));
+		return ret;
+	}
+
+	ret = smb_krb5_open_keytab(context, keytab_name, true, &keytab);
+	if (ret) {
+		DEBUG(1,("keytab_init: smb_krb5_open_keytab failed (%s)\n",
+			error_message(ret)));
+		krb5_free_context(context);
+		return ret;
+	}
+
+	ret = smb_krb5_keytab_name(mem_ctx, context, keytab, &keytab_string);
+	if (ret) {
+		krb5_kt_close(context, keytab);
+		krb5_free_context(context);
+		return ret;
+	}
+
+	r->context = context;
+	r->keytab = keytab;
+	r->keytab_name = keytab_string;
+
+	*ctx = r;
+
+	return 0;
+}
+
+/****************************************************************
+****************************************************************/
+
+krb5_error_code libnet_keytab_add(struct libnet_keytab_context *ctx)
+{
+#if defined(ENCTYPE_ARCFOUR_HMAC)
+	krb5_error_code ret = 0;
+	krb5_enctype enctypes[2] = { ENCTYPE_ARCFOUR_HMAC, 0 };
+	int i;
+
+	for (i=0; i<ctx->count; i++) {
+
+		struct libnet_keytab_entry *entry = &ctx->entries[i];
+		krb5_data password;
+
+		password.data = (char *)entry->password.data;
+		password.length = entry->password.length;
+
+		ret = smb_krb5_kt_add_entry(ctx->context,
+					    ctx->keytab,
+					    entry->kvno,
+					    entry->principal,
+					    enctypes,
+					    password,
+					    true);
+		if (ret) {
+			DEBUG(1,("libnet_keytab_add: "
+				"Failed to add entry to keytab file\n"));
+			return ret;
+		}
+	}
+
+	return ret;
+#else
+	return -1;
+#endif /* defined(ENCTYPE_ARCFOUR_HMAC) */
+}
+
+#endif /* HAVE_KRB5 */