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Sanitize Linux open env for AppImage, add safer fallbacks

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This commit is contained in:
deepend-tildeclub
2026-03-31 23:26:40 -06:00
parent 64bffd0dc8
commit 2cf69d2e67
2 changed files with 50 additions and 31 deletions
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69
src/fe-gtk/fe-gtk.c
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@@ -1308,17 +1308,38 @@ maybe_escape_uri (const char *uri)
return g_strdup (uri);
}
#ifndef WIN32
static gchar **
fe_open_url_env_sanitized (void)
{
gchar **env = g_get_environ ();
const char *vars[] = {"LD_LIBRARY_PATH", "LD_PRELOAD", "APPDIR", "APPIMAGE", "ARGV0", NULL};
int i;
for (i = 0; vars[i]; i++)
{
gchar **tmp_env = env;
env = g_environ_unsetenv (tmp_env, vars[i]);
if (env != tmp_env)
g_strfreev (tmp_env);
}
return env;
}
#endif
static void
fe_open_url_inner (const char *url)
{
GError *error = NULL;
char *escaped_url = maybe_escape_uri (url);
gboolean opened = g_app_info_launch_default_for_uri (escaped_url, NULL, &error);
gboolean opened = FALSE;
#ifdef WIN32
opened = g_app_info_launch_default_for_uri (escaped_url, NULL, &error);
if (!opened)
{
g_clear_error (&error);
#ifdef WIN32
gunichar2 *url_utf16 = g_utf8_to_utf16 (escaped_url, -1, NULL, NULL, NULL);
if (url_utf16 != NULL)
@@ -1326,22 +1347,11 @@ fe_open_url_inner (const char *url)
opened = ((INT_PTR) ShellExecuteW (0, L"open", url_utf16, NULL, NULL, SW_SHOWNORMAL)) > 32;
g_free (url_utf16);
}
}
#else
{
gchar *xdg_open_argv[] = {(gchar *) "xdg-open", escaped_url, NULL};
gchar **spawn_env = NULL;
spawn_env = g_get_environ ();
{
gchar **tmp_env = spawn_env;
spawn_env = g_environ_unsetenv (tmp_env, "LD_LIBRARY_PATH");
if (spawn_env != tmp_env)
g_strfreev (tmp_env);
tmp_env = spawn_env;
spawn_env = g_environ_unsetenv (tmp_env, "LD_PRELOAD");
if (spawn_env != tmp_env)
g_strfreev (tmp_env);
}
gchar **spawn_env = fe_open_url_env_sanitized ();
if (g_spawn_async (NULL, xdg_open_argv, spawn_env,
G_SPAWN_SEARCH_PATH | G_SPAWN_STDOUT_TO_DEV_NULL | G_SPAWN_STDERR_TO_DEV_NULL,
@@ -1354,19 +1364,26 @@ fe_open_url_inner (const char *url)
g_clear_error (&error);
}
if (!opened && gtk_show_uri_on_window (NULL, escaped_url, GDK_CURRENT_TIME, &error))
{
opened = TRUE;
}
else if (!opened)
{
g_clear_error (&error);
}
g_strfreev (spawn_env);
#endif
}
if (!opened)
{
opened = g_app_info_launch_default_for_uri (escaped_url, NULL, &error);
if (!opened)
g_clear_error (&error);
}
if (!opened && gtk_show_uri_on_window (NULL, escaped_url, GDK_CURRENT_TIME, &error))
{
opened = TRUE;
}
else if (!opened)
{
g_clear_error (&error);
}
#endif
if (!opened)
{
g_warning ("Unable to open URL '%s' using system default application", escaped_url);