1 files changed, 161 insertions, 0 deletions
diff --git a/source4/auth/ntlm/auth_anonymous.c b/source4/auth/ntlm/auth_anonymous.c
new file mode 100644
index 0000000..a25aaca
--- /dev/null
+++ b/source4/auth/ntlm/auth_anonymous.c
@@ -0,0 +1,161 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Anonymous Authentification
+
+   Copyright (C) Stefan Metzmacher            2004-2005
+   
+   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 <tevent.h>
+#include "auth/auth.h"
+#include "auth/ntlm/auth_proto.h"
+#include "param/param.h"
+#include "lib/util/tevent_ntstatus.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+_PUBLIC_ NTSTATUS auth4_anonymous_init(TALLOC_CTX *);
+
+/**
+ * Return a anonymous logon for anonymous users (username = "")
+ *
+ * Typically used as the first module in the auth chain, this allows
+ * anonymou logons to be dealt with in one place.  Non-anonymou logons 'fail'
+ * and pass onto the next module.
+ **/
+static NTSTATUS anonymous_want_check(struct auth_method_context *ctx,
+			      	     TALLOC_CTX *mem_ctx,
+				     const struct auth_usersupplied_info *user_info)
+{
+	if (user_info->client.account_name && *user_info->client.account_name) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+
+	switch (user_info->password_state) {
+	case AUTH_PASSWORD_PLAIN:
+		if (user_info->password.plaintext != NULL &&
+		    strlen(user_info->password.plaintext) > 0)
+		{
+			return NT_STATUS_NOT_IMPLEMENTED;
+		}
+		break;
+	case AUTH_PASSWORD_HASH:
+		if (user_info->password.hash.lanman != NULL) {
+			return NT_STATUS_NOT_IMPLEMENTED;
+		}
+		if (user_info->password.hash.nt != NULL) {
+			return NT_STATUS_NOT_IMPLEMENTED;
+		}
+		break;
+	case AUTH_PASSWORD_RESPONSE:
+		if (user_info->password.response.lanman.length == 1) {
+			if (user_info->password.response.lanman.data[0] != '\0') {
+				return NT_STATUS_NOT_IMPLEMENTED;
+			}
+		} else if (user_info->password.response.lanman.length > 1) {
+			return NT_STATUS_NOT_IMPLEMENTED;
+		}
+		if (user_info->password.response.nt.length > 0) {
+			return NT_STATUS_NOT_IMPLEMENTED;
+		}
+		break;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/**
+ * Return a anonymous logon for anonymous users (username = "")
+ *
+ * Typically used as the first module in the auth chain, this allows
+ * anonymou logons to be dealt with in one place.  Non-anonymou logons 'fail'
+ * and pass onto the next module.
+ **/
+
+struct anonymous_check_password_state {
+	struct auth_user_info_dc *user_info_dc;
+};
+
+static struct tevent_req *anonymous_check_password_send(
+	TALLOC_CTX *mem_ctx,
+	struct tevent_context *ev,
+	struct auth_method_context *ctx,
+	const struct auth_usersupplied_info *user_info)
+{
+	struct tevent_req *req = NULL;
+	struct anonymous_check_password_state *state = NULL;
+	NTSTATUS status;
+
+	req = tevent_req_create(
+		mem_ctx,
+		&state,
+		struct anonymous_check_password_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	status = auth_anonymous_user_info_dc(
+		state,
+		lpcfg_netbios_name(ctx->auth_ctx->lp_ctx),
+		&state->user_info_dc);
+	if (tevent_req_nterror(req, status)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_done(req);
+	return tevent_req_post(req, ev);
+}
+
+static NTSTATUS anonymous_check_password_recv(
+	struct tevent_req *req,
+	TALLOC_CTX *mem_ctx,
+	struct auth_user_info_dc **interim_info,
+	bool *authoritative)
+{
+	struct anonymous_check_password_state *state = tevent_req_data(
+		req, struct anonymous_check_password_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		tevent_req_received(req);
+		return status;
+	}
+	*interim_info = talloc_move(mem_ctx, &state->user_info_dc);
+	tevent_req_received(req);
+	return NT_STATUS_OK;
+}
+
+
+static const struct auth_operations anonymous_auth_ops = {
+	.name			= "anonymous",
+	.want_check		= anonymous_want_check,
+	.check_password_send	= anonymous_check_password_send,
+	.check_password_recv	= anonymous_check_password_recv,
+};
+
+_PUBLIC_ NTSTATUS auth4_anonymous_init(TALLOC_CTX *ctx)
+{
+	NTSTATUS ret;
+
+	ret = auth_register(ctx, &anonymous_auth_ops);
+	if (!NT_STATUS_IS_OK(ret)) {
+		DEBUG(0,("Failed to register 'anonymous' auth backend!\n"));
+		return ret;
+	}
+
+	return ret;
+}