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Wayland: Fix handling of clipboard set to self

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Passing any part of the result of glfwGetClipboardString to
glfwSetClipboardString would result in, at best, a use-after-free error.
This commit is contained in:
Camilla Löwy 2022-03-22 18:46:57 +01:00
parent 920d110b6c
commit 9c95cfb9f1
2 changed files with 11 additions and 11 deletions
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2
README.md
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@ -310,6 +310,8 @@ information on what to include when reporting a bug.
- [Wayland] Bugfix: Some keys were reported as wrong key or `GLFW_KEY_UNKNOWN` - [Wayland] Bugfix: Some keys were reported as wrong key or `GLFW_KEY_UNKNOWN`
- [Wayland] Bugfix: Text input did not repeat along with key repeat - [Wayland] Bugfix: Text input did not repeat along with key repeat
- [Wayland] Bugfix: `glfwPostEmptyEvent` sometimes had no effect (#1520,#1521) - [Wayland] Bugfix: `glfwPostEmptyEvent` sometimes had no effect (#1520,#1521)
- [Wayland] Bugfix: `glfwSetClipboardString` would fail if set to result of
`glfwGetClipboardString`
- [POSIX] Removed use of deprecated function `gettimeofday` - [POSIX] Removed use of deprecated function `gettimeofday`
- [POSIX] Bugfix: `CLOCK_MONOTONIC` was not correctly tested for or enabled - [POSIX] Bugfix: `CLOCK_MONOTONIC` was not correctly tested for or enabled
- [WGL] Disabled the DWM swap interval hack for Windows 8 and later (#1072) - [WGL] Disabled the DWM swap interval hack for Windows 8 and later (#1072)

20
src/wl_window.c
View File

@ -1664,20 +1664,18 @@ void _glfwSetClipboardStringWayland(const char* string)
_glfw.wl.dataSource = NULL; _glfw.wl.dataSource = NULL;
} }
if (_glfw.wl.clipboardSendString) char* copy = _glfw_strdup(string);
if (!copy)
{ {
_glfw_free(_glfw.wl.clipboardSendString); _glfwInputError(GLFW_OUT_OF_MEMORY,
_glfw.wl.clipboardSendString = NULL; "Wayland: Failed to allocate clipboard string");
}
_glfw.wl.clipboardSendString = _glfw_strdup(string);
if (!_glfw.wl.clipboardSendString)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Impossible to allocate clipboard string");
return; return;
} }
_glfw.wl.clipboardSendSize = strlen(string);
_glfw_free(_glfw.wl.clipboardSendString);
_glfw.wl.clipboardSendString = copy;
_glfw.wl.clipboardSendSize = strlen(_glfw.wl.clipboardSendString);
_glfw.wl.dataSource = _glfw.wl.dataSource =
wl_data_device_manager_create_data_source(_glfw.wl.dataDeviceManager); wl_data_device_manager_create_data_source(_glfw.wl.dataDeviceManager);
if (!_glfw.wl.dataSource) if (!_glfw.wl.dataSource)