add a request type for grabbing the host's directory separator, fixes #4892

git-svn-id: file:///home/svn/framework3/trunk@13346 4d416f70-5f16-0410-b530-b9f4589650da

data/meterpreter/ext_server_stdapi.php

@@ -391,6 +391,13 @@ function stdapi_fs_ls($req, &$pkt) {
 }
 }
 
+if (!function_exists('stdapi_fs_separator')) {
+function stdapi_fs_separator($req, &$pkt) {
+    packet_add_tlv($pkt, create_tlv(TLV_TYPE_STRING, DIRECTORY_SEPARATOR));
+    return ERROR_SUCCESS;
+}
+}
+
 if (!function_exists('stdapi_fs_stat')) {
 function stdapi_fs_stat($req, &$pkt) {
     my_print("doing stat");

external/source/meterpreter/java/src/stdapi/com/metasploit/meterpreter/stdapi/Loader.java

@@ -35,6 +35,7 @@ public class Loader implements ExtensionLoader {
 		mgr.registerCommand("stdapi_fs_ls", stdapi_fs_ls.class);
 		mgr.registerCommand("stdapi_fs_mkdir", stdapi_fs_mkdir.class);
 		mgr.registerCommand("stdapi_fs_search", stdapi_fs_search.class);
+		mgr.registerCommand("stdapi_fs_separator", stdapi_fs_separator.class);
 		mgr.registerCommand("stdapi_fs_stat", stdapi_fs_stat.class, V1_2, V1_6);
 		mgr.registerCommand("stdapi_net_config_get_interfaces", stdapi_net_config_get_interfaces.class, V1_4, V1_6);
 		mgr.registerCommand("stdapi_net_config_get_routes", stdapi_net_config_get_routes.class, V1_4);

external/source/meterpreter/java/src/stdapi/com/metasploit/meterpreter/stdapi/stdapi_fs_separator.java

@@ -0,0 +1,20 @@
+package com.metasploit.meterpreter.stdapi;
+
+import java.io.ByteArrayOutputStream;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.IOException;
+
+import com.metasploit.meterpreter.Meterpreter;
+import com.metasploit.meterpreter.TLVPacket;
+import com.metasploit.meterpreter.TLVType;
+import com.metasploit.meterpreter.command.Command;
+
+public class stdapi_fs_separator implements Command {
+
+	public int execute(Meterpreter meterpreter, TLVPacket request, TLVPacket response) throws Exception {
+		response.add(TLVType.TLV_TYPE_STRING, File.separator);
+		return ERROR_SUCCESS;
+	}
+
+}

external/source/meterpreter/source/extensions/stdapi/server/fs/file.c

@@ -223,6 +223,29 @@ DWORD request_fs_file_channel_open(Remote *remote, Packet *packet)
 	return res;
 }
 
+/*
+ * Gets the directory separator for this system
+ */
+DWORD request_fs_separator(Remote *remote, Packet *packet)
+{
+	Packet *response = packet_create_response(packet);
+#ifdef _WIN32
+	LPCSTR separator = "\\";
+#else
+	LPCSTR separator = "/";
+#endif
+
+	packet_add_tlv_string(response, TLV_TYPE_STRING, separator);
+
+	// Set the result and transmit the response
+	packet_add_tlv_uint(response, TLV_TYPE_RESULT, ERROR_SUCCESS);
+
+	packet_transmit(remote, response, NULL);
+
+	return ERROR_SUCCESS;
+}
+
+
 /*
  * Gets information about the file path that is supplied and returns it to the
  * requestor
@@ -462,4 +485,4 @@ DWORD request_fs_sha1(Remote *remote, Packet *packet)
 		free(expanded);
 
 	return ERROR_SUCCESS;
-}
+}

external/source/meterpreter/source/extensions/stdapi/server/fs/fs.h

@@ -12,6 +12,7 @@ DWORD request_fs_chdir(Remote *remote, Packet *packet);
 DWORD request_fs_mkdir(Remote *remote, Packet *packet);
 DWORD request_fs_delete_dir(Remote *remote, Packet *packet);
 DWORD request_fs_delete_file(Remote *remote, Packet *packet);
+DWORD request_fs_separator(Remote *remote, Packet *packet);
 DWORD request_fs_stat(Remote *remote, Packet *packet);
 DWORD request_fs_file_expand_path(Remote *remote, Packet *packet);
 DWORD request_fs_search( Remote * remote, Packet * packet );

external/source/meterpreter/source/extensions/stdapi/server/stdapi.c

@@ -71,6 +71,10 @@ Command customCommands[] =
 	  { request_fs_delete_file,                             { 0 }, 0 },
 	  { EMPTY_DISPATCH_HANDLER                                      },
 	},
+	{ "stdapi_fs_separator",
+	  { request_fs_separator,                              { 0 }, 0 },
+	  { EMPTY_DISPATCH_HANDLER                                      },
+	},
 	{ "stdapi_fs_stat",
 	  { request_fs_stat,                                   { 0 }, 0 },
 	  { EMPTY_DISPATCH_HANDLER                                      },

lib/rex/post/meterpreter/extensions/stdapi/fs/file.rb

@@ -24,15 +24,32 @@ module Fs
 class File < Rex::Post::Meterpreter::Extensions::Stdapi::Fs::IO
 
 	#
-	# This should be replaced with a platform-specific value.
+	# Return the directory separator, i.e.: "/" on unix, "\\" on windows
 	#
-	SEPARATOR = "\\"
-	Separator = "\\"
+	def File.separator()
+		# The separator won't change, so cache it to prevent sending
+		# unnecessary requests.
+		return @separator if @separator
 
-	include Rex::Post::File
+		request = Packet.create_request('stdapi_fs_separator')
+
+		# Fall back to the old behavior of always assuming windows.  This
+		# allows meterpreter executables built before the addition of this
+		# command to continue functioning.
+		begin
+			response = client.send_request(request)
+			@separator = response.get_tlv_value(TLV_TYPE_STRING)
+		rescue RequestError
+			@separator = "\\"
+		end
+
+		return @separator
+	end
 
 	class << self
 		attr_accessor :client
+		alias :Separator :separator
+		alias :SEPARATOR :separator
 	end
 
 	#
@@ -169,7 +186,7 @@ class File < Rex::Post::Meterpreter::Extensions::Stdapi::Fs::IO
 
 			stat.call('uploading', src, dest) if (stat)
 			if (File.basename(destination) != ::File.basename(src))
-				dest += File::SEPARATOR + ::File.basename(src)
+				dest += File.separator + ::File.basename(src)
 			end
 
 			upload_file(dest, src)