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LibIPC: Allow opt-in UTF-8 validation on message parameters

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You can now mark String message parameters with the [UTF8] attribute.
This will cause the generated decoder to perform UTF-8 validation and
reject the message if the given parameter is not a valid UTF-8 string.

This frees up the receiving side from having to do this validation at
a higher level.
This commit is contained in:
Andreas Kling 2020-05-16 14:11:35 +02:00
parent f7a75598bb
commit cd29844632
Notes: sideshowbarker 2024-07-19 06:36:35 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/cd298446328
6 changed files with 39 additions and 16 deletions
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23
DevTools/IPCCompiler/main.cpp
View File

@ -35,6 +35,7 @@
//#define GENERATE_DEBUG_CODE
struct Parameter {
Vector<String> attributes;
String type;
String name;
};
@ -127,6 +128,23 @@ int main(int argc, char** argv)
consume_whitespace();
if (peek() == ')')
break;
if (peek() == '[') {
consume_one();
for (;;) {
if (peek() == ']') {
consume_one();
consume_whitespace();
break;
}
if (peek() == ',') {
consume_one();
consume_whitespace();
}
auto attribute = extract_while([](char ch) { return ch != ']' && ch != ','; });
parameter.attributes.append(attribute);
consume_whitespace();
}
}
parameter.type = extract_while([](char ch) { return !isspace(ch); });
consume_whitespace();
parameter.name = extract_while([](char ch) { return !isspace(ch) && ch != ',' && ch != ')'; });
@ -226,6 +244,7 @@ int main(int argc, char** argv)
out() << "#pragma once";
out() << "#include <AK/BufferStream.h>";
out() << "#include <AK/OwnPtr.h>";
out() << "#include <AK/Utf8View.h>";
out() << "#include <LibGfx/Color.h>";
out() << "#include <LibGfx/Rect.h>";
out() << "#include <LibGfx/ShareableBitmap.h>";
@ -312,6 +331,10 @@ int main(int argc, char** argv)
out() << " " << parameter.type << " " << parameter.name << " = " << initial_value << ";";
out() << " if (!decoder.decode(" << parameter.name << "))";
out() << " return nullptr;";
if (parameter.attributes.contains_slow("UTF8")) {
out() << " if (!Utf8View(" << parameter.name << ").validate())";
out() << " return nullptr;";
}
}
StringBuilder builder;

2
Services/Clipboard/ClipboardClient.ipc
View File

@ -1,4 +1,4 @@
endpoint ClipboardClient = 804
{
ClipboardDataChanged(String mime_type) =|
ClipboardDataChanged([UTF8] String mime_type) =|
}

4
Services/Clipboard/ClipboardServer.ipc
View File

@ -2,6 +2,6 @@ endpoint ClipboardServer = 802
{
Greet() => (i32 client_id)
GetClipboardData() => (i32 shbuf_id, i32 data_size, String mime_type)
SetClipboardData(i32 shbuf_id, i32 data_size, String mime_type) => ()
GetClipboardData() => (i32 shbuf_id, i32 data_size, [UTF8] String mime_type)
SetClipboardData(i32 shbuf_id, i32 data_size, [UTF8] String mime_type) => ()
}

2
Services/NotificationServer/NotificationServer.ipc
View File

@ -3,5 +3,5 @@ endpoint NotificationServer = 95
// Basic protocol
Greet() => (i32 client_id)
ShowNotification(String text, String title, Gfx::ShareableBitmap icon) => ()
ShowNotification([UTF8] String text, [UTF8] String title, Gfx::ShareableBitmap icon) => ()
}

4
Services/WindowServer/WindowClient.ipc
View File

@ -21,7 +21,7 @@ endpoint WindowClient = 4
ScreenRectChanged(Gfx::Rect rect) =|
WM_WindowRemoved(i32 wm_id, i32 client_id, i32 window_id) =|
WM_WindowStateChanged(i32 wm_id, i32 client_id, i32 window_id, bool is_active, bool is_minimized, bool is_frameless, i32 window_type, String title, Gfx::Rect rect) =|
WM_WindowStateChanged(i32 wm_id, i32 client_id, i32 window_id, bool is_active, bool is_minimized, bool is_frameless, i32 window_type, [UTF8] String title, Gfx::Rect rect) =|
WM_WindowIconBitmapChanged(i32 wm_id, i32 client_id, i32 window_id, i32 icon_buffer_id, Gfx::Size icon_size) =|
WM_WindowRectChanged(i32 wm_id, i32 client_id, i32 window_id, Gfx::Rect rect) =|
@ -30,7 +30,7 @@ endpoint WindowClient = 4
DragAccepted() =|
DragCancelled() =|
DragDropped(i32 window_id, Gfx::Point mouse_position, String text, String data_type, String data) =|
DragDropped(i32 window_id, Gfx::Point mouse_position, [UTF8] String text, String data_type, String data) =|
UpdateSystemTheme(i32 system_theme_buffer_id) =|

20
Services/WindowServer/WindowServer.ipc
View File

@ -5,7 +5,7 @@ endpoint WindowServer = 2
CreateMenubar() => (i32 menubar_id)
DestroyMenubar(i32 menubar_id) => ()
CreateMenu(String menu_title) => (i32 menu_id)
CreateMenu([UTF8] String menu_title) => (i32 menu_id)
DestroyMenu(i32 menu_id) => ()
AddMenuToMenubar(i32 menubar_id, i32 menu_id) => ()
@ -17,17 +17,17 @@ endpoint WindowServer = 2
i32 menu_id,
i32 identifier,
i32 submenu_id,
String text,
[UTF8] String text,
bool enabled,
bool checkable,
bool checked,
String shortcut,
[UTF8] String shortcut,
i32 icon_buffer_id,
bool exclusive) => ()
AddMenuSeparator(i32 menu_id) => ()
UpdateMenuItem(i32 menu_id, i32 identifier, i32 submenu_id, String text, bool enabled, bool checkable, bool checked, String shortcut) => ()
UpdateMenuItem(i32 menu_id, i32 identifier, i32 submenu_id, [UTF8] String text, bool enabled, bool checkable, bool checked, [UTF8] String shortcut) => ()
CreateWindow(
Gfx::Rect rect,
@ -41,13 +41,13 @@ endpoint WindowServer = 2
Gfx::Size base_size,
Gfx::Size size_increment,
i32 type,
String title,
[UTF8] String title,
i32 parent_window_id) => (i32 window_id)
DestroyWindow(i32 window_id) => (Vector<i32> destroyed_window_ids)
SetWindowTitle(i32 window_id, String title) => ()
GetWindowTitle(i32 window_id) => (String title)
SetWindowTitle(i32 window_id, [UTF8] String title) => ()
GetWindowTitle(i32 window_id) => ([UTF8] String title)
SetWindowRect(i32 window_id, Gfx::Rect rect) => (Gfx::Rect rect)
GetWindowRect(i32 window_id) => (Gfx::Rect rect)
@ -84,10 +84,10 @@ endpoint WindowServer = 2
SetWindowOverrideCursor(i32 window_id, i32 cursor_type) => ()
SetWindowCustomOverrideCursor(i32 window_id, Gfx::ShareableBitmap cursor) => ()
StartDrag(String text, String data_type, String data, i32 bitmap_id, Gfx::Size bitmap_size) => (bool started)
StartDrag([UTF8] String text, String data_type, String data, i32 bitmap_id, Gfx::Size bitmap_size) => (bool started)
SetSystemTheme(String theme_path, String theme_name) => (bool success)
GetSystemTheme() => (String theme_name)
SetSystemTheme(String theme_path, [UTF8] String theme_name) => (bool success)
GetSystemTheme() => ([UTF8] String theme_name)
SetWindowBaseSizeAndSizeIncrement(i32 window_id, Gfx::Size base_size, Gfx::Size size_increment) => ()