Introduce a new authentication backend auth_onefs_wb

This new backend is custom tailored to onefs' unique requirements:
1) No fallback logic
2) Does not validate the domain of the user
3) Handles unencrypted passwords

1 files changed, 134 insertions, 0 deletions

diff --git a/source3/auth/auth_onefs_wb.c b/source3/auth/auth_onefs_wb.c
new file mode 100644
index 0000000000..49de6966b0
--- /dev/null
+++ b/source3/auth/auth_onefs_wb.c
@@ -0,0 +1,134 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind authentication mechnism, customized for onefs
+
+   Copyright (C) Tim Potter 2000
+   Copyright (C) Andrew Bartlett 2001 - 2002
+   Copyright (C) Dan Sledz 2009
+
+   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"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+/* Authenticate a user with a challenge/response */
+
+static NTSTATUS check_onefs_wb_security(const struct auth_context *auth_context,
+				       void *my_private_data,
+				       TALLOC_CTX *mem_ctx,
+				       const auth_usersupplied_info *user_info,
+				       auth_serversupplied_info **server_info)
+{
+	NTSTATUS nt_status;
+	wbcErr wbc_status;
+	struct wbcAuthUserParams params;
+	struct wbcAuthUserInfo *info = NULL;
+	struct wbcAuthErrorInfo *err = NULL;
+
+	if (!user_info || !auth_context || !server_info) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	/* Send off request */
+
+	params.account_name	= user_info->smb_name;
+	params.domain_name	= user_info->domain;
+	params.workstation_name	= user_info->wksta_name;
+
+	params.flags		= 0;
+	params.parameter_control= user_info->logon_parameters;
+
+	/* Handle plaintext */
+	if (!user_info->encrypted) {
+		DEBUG(3,("Checking plaintext password for %s.\n",
+			 user_info->internal_username));
+		params.level = WBC_AUTH_USER_LEVEL_PLAIN;
+
+		params.password.plaintext = user_info->plaintext_password.data;
+	} else {
+		DEBUG(3,("Checking encrypted password for %s.\n",
+			 user_info->internal_username));
+		params.level = WBC_AUTH_USER_LEVEL_RESPONSE;
+
+		memcpy(params.password.response.challenge,
+		    auth_context->challenge.data,
+		    sizeof(params.password.response.challenge));
+
+		params.password.response.nt_length = user_info->nt_resp.length;
+		params.password.response.nt_data = user_info->nt_resp.data;
+		params.password.response.lm_length = user_info->lm_resp.length;
+		params.password.response.lm_data = user_info->lm_resp.data;
+
+	}
+
+	/* we are contacting the privileged pipe */
+	become_root();
+	wbc_status = wbcAuthenticateUserEx(&params, &info, &err);
+	unbecome_root();
+
+	if (!WBC_ERROR_IS_OK(wbc_status)) {
+		DEBUG(10,("wbcAuthenticateUserEx failed (%d): %s\n",
+			wbc_status, wbcErrorString(wbc_status)));
+	}
+
+	if (wbc_status == WBC_ERR_NO_MEMORY) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (wbc_status == WBC_ERR_AUTH_ERROR) {
+		nt_status = NT_STATUS(err->nt_status);
+		wbcFreeMemory(err);
+		return nt_status;
+	}
+
+	if (!WBC_ERROR_IS_OK(wbc_status)) {
+		return NT_STATUS_LOGON_FAILURE;
+	}
+
+	DEBUG(10,("wbcAuthenticateUserEx succeeded\n"));
+
+	nt_status = make_server_info_wbcAuthUserInfo(mem_ctx,
+						     user_info->smb_name,
+						     user_info->domain,
+						     info, server_info);
+	wbcFreeMemory(info);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		return nt_status;
+	}
+
+	(*server_info)->nss_token |= user_info->was_mapped;
+
+        return nt_status;
+}
+
+/* module initialisation */
+static NTSTATUS auth_init_onefs_wb(struct auth_context *auth_context, const char *param, auth_methods **auth_method)
+{
+	if (!make_auth_methods(auth_context, auth_method)) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	(*auth_method)->name = "onefs_wb";
+	(*auth_method)->auth = check_onefs_wb_security;
+
+	return NT_STATUS_OK;
+}
+
+NTSTATUS auth_onefs_wb_init(void)
+{
+	return smb_register_auth(AUTH_INTERFACE_VERSION, "onefs_wb", auth_init_onefs_wb);
+}