Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 107 insertions, 0 deletions

diff --git a/source3/auth/auth_unix.c b/source3/auth/auth_unix.c
new file mode 100644
index 0000000..eaf344d
--- /dev/null
+++ b/source3/auth/auth_unix.c
@@ -0,0 +1,107 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Password and authentication handling
+   Copyright (C) Andrew Bartlett              2001
+
+   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 "auth.h"
+#include "system/passwd.h"
+#include "../lib/tsocket/tsocket.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+/** Check a plaintext username/password
+ *
+ * Cannot deal with an encrypted password in any manner whatsoever,
+ * unless the account has a null password.
+ **/
+
+static NTSTATUS check_unix_security(const struct auth_context *auth_context,
+			     void *my_private_data, 
+			     TALLOC_CTX *mem_ctx,
+			     const struct auth_usersupplied_info *user_info,
+			     struct auth_serversupplied_info **server_info)
+{
+	NTSTATUS nt_status;
+	struct passwd *pass = NULL;
+	const char *rhost;
+
+	DEBUG(10, ("Check auth for: [%s]\n", user_info->mapped.account_name));
+
+	if (tsocket_address_is_inet(user_info->remote_host, "ip")) {
+		rhost = tsocket_address_inet_addr_string(user_info->remote_host,
+							 talloc_tos());
+		if (rhost == NULL) {
+			return NT_STATUS_NO_MEMORY;
+		}
+	} else {
+		rhost = "127.0.0.1";
+	}
+
+	become_root();
+	pass = Get_Pwnam_alloc(talloc_tos(), user_info->mapped.account_name);
+
+	/** @todo This call assumes a ASCII password, no charset transformation is 
+	    done.  We may need to revisit this **/
+	nt_status = pass_check(pass,
+				pass ? pass->pw_name : user_info->mapped.account_name,
+				rhost,
+				user_info->password.plaintext,
+				true);
+
+	unbecome_root();
+
+	if (NT_STATUS_IS_OK(nt_status)) {
+		if (pass != NULL) {
+			nt_status = make_server_info_pw(mem_ctx,
+							pass->pw_name,
+							pass,
+							server_info);
+		} else {
+			/* we need to do something more useful here */
+			nt_status = NT_STATUS_NO_SUCH_USER;
+		}
+	}
+
+	TALLOC_FREE(pass);
+	return nt_status;
+}
+
+/* module initialisation */
+static NTSTATUS auth_init_unix(
+	struct auth_context *auth_context,
+	const char* param,
+	struct auth_methods **auth_method)
+{
+	struct auth_methods *result;
+
+	result = talloc_zero(auth_context, struct auth_methods);
+	if (result == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	result->name = "unix";
+	result->auth = check_unix_security;
+
+	*auth_method = result;
+	return NT_STATUS_OK;
+}
+
+NTSTATUS auth_unix_init(TALLOC_CTX *mem_ctx)
+{
+	return smb_register_auth(AUTH_INTERFACE_VERSION, "unix", auth_init_unix);
+}