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fix: Steam Input mouse clicks, scrolling and pointer moves reach games again

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maxjivi05 authored and MaxsTechReview committed 2026-10-24 09:07:04 -04:00
1 parent 2bd279a0f3
commit a66d7d74a4
2 files changed
+39 -2
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tools/linuxfs/preload/rptouch.c
+9 -2
View File
@@ -51,9 +51,16 @@ static void rt_send(void *dpy, uint32_t action) {
}
}
static void *rt_xtst(const char *name) {
void *fn = dlsym(RTLD_NEXT, name);
if (fn) return fn;
void *lib = dlopen("libXtst.so.6", RTLD_LAZY | RTLD_NOLOAD);
return lib ? dlsym(lib, name) : NULL;
}
int XTestFakeMotionEvent(void *dpy, int screen, int x, int y, unsigned long delay) {
static int (*real)(void *, int, int, int, unsigned long);
if (!real) real = (int (*)(void *, int, int, int, unsigned long))dlsym(RTLD_NEXT, "XTestFakeMotionEvent");
if (!real) real = (int (*)(void *, int, int, int, unsigned long))rt_xtst("XTestFakeMotionEvent");
if (rt_enabled()) {
pthread_mutex_lock(&rt_lock);
rt_x = x;
@@ -69,7 +76,7 @@ int XTestFakeMotionEvent(void *dpy, int screen, int x, int y, unsigned long dela
int XTestFakeButtonEvent(void *dpy, unsigned int button, int press, unsigned long delay) {
static int (*real)(void *, unsigned int, int, unsigned long);
if (!real) real = (int (*)(void *, unsigned int, int, unsigned long))dlsym(RTLD_NEXT, "XTestFakeButtonEvent");
if (!real) real = (int (*)(void *, unsigned int, int, unsigned long))rt_xtst("XTestFakeButtonEvent");
if (button == 1) {
pthread_mutex_lock(&rt_lock);
int handled = 0;
tools/tests/test_venc_emulator.py
+30
View File
@@ -223,5 +223,35 @@ class VencEmulatorTest(unittest.TestCase):
self.assertEqual(server.touches, [(0, 65535, 32767), (1, 32767, 0), (2, 32767, 0)])
def test_xtest_calls_from_a_locally_loaded_library_still_reach_libxtst(self):
with tempfile.TemporaryDirectory() as tmp:
tmp = Path(tmp)
(tmp / 'xtst.c').write_text(
'int XTestFakeButtonEvent(void *d, unsigned b, int p, unsigned long t) { return 7; }\n'
'int XTestFakeMotionEvent(void *d, int s, int x, int y, unsigned long t) { return 7; }\n')
(tmp / 'ui.c').write_text(
'int XTestFakeButtonEvent(void *, unsigned, int, unsigned long);\n'
'int XTestFakeMotionEvent(void *, int, int, int, unsigned long);\n'
'int ui_click(void) { return XTestFakeButtonEvent(0, 1, 1, 0) + XTestFakeButtonEvent(0, 3, 0, 0); }\n'
'int ui_move(void) { return XTestFakeMotionEvent(0, 0, 10, 20, 0); }\n')
(tmp / 'main.c').write_text(
'#include <dlfcn.h>\n#include <stdio.h>\n'
'int main(int argc, char **argv) {\n'
' void *ui = dlopen(argv[1], RTLD_NOW | RTLD_LOCAL);\n'
' if (!ui) return 2;\n'
' int (*click)(void) = dlsym(ui, "ui_click"), (*move)(void) = dlsym(ui, "ui_move");\n'
' printf("%d %d\\n", click(), move());\n'
' return click() == 14 && move() == 7 ? 0 : 1;\n'
'}\n')
run = lambda *a: subprocess.run(['cc', *a], check=True, cwd=tmp)
run('-shared', '-fPIC', '-Wl,-soname,libXtst.so.6', '-o', 'libXtst.so.6', 'xtst.c')
run('-shared', '-fPIC', '-o', 'libui.so', 'ui.c', '-L.', '-l:libXtst.so.6', "-Wl,-rpath,$ORIGIN")
run('-shared', '-fPIC', '-pthread', '-o', 'libhook.so', str(VENC), str(TOUCH), '-ldl')
run('-o', 'main', 'main.c', '-ldl')
done = subprocess.run([str(tmp / 'main'), str(tmp / 'libui.so')],
env=dict(os.environ, LD_PRELOAD=str(tmp / 'libhook.so')),
capture_output=True, text=True, timeout=20)
self.assertEqual(done.returncode, 0, done.stdout + done.stderr)
if __name__ == '__main__':
unittest.main()