ibus/ibus-socket-name-compatibility.patch

This writes ~/.config/ibus/bus/SOCKETPATH with the old name.
Author: Changwoo Ryu
Last-Update: 2020-05-01
Bug: https://bugreports.qt.io/browse/QTBUG-82910
Forwarded: not-needed, workaround

--- a/src/ibusshare.c
+++ b/src/ibusshare.c
@@ -90,79 +90,132 @@
     return g_getenv("IBUS_SESSION_ID");
 }
 
+static const gchar *ibus_get_socket_path_internal (gboolean compat, gchar *client_display);
+
 const gchar *
 ibus_get_socket_path (void)
 {
     static gchar *path = NULL;
 
     if (path == NULL) {
-        gchar *hostname = "unix";
-        gchar *display;
-        gchar *displaynumber = "0";
-        /* gchar *screennumber = "0"; */
-        gboolean is_wayland = FALSE;
-        gchar *p;
-
-        path = g_strdup (g_getenv ("IBUS_ADDRESS_FILE"));
-        if (path != NULL) {
-            return path;
+        path = ibus_get_socket_path_internal (FALSE, NULL);
+    }
+    return path;
+}
+
+static const gchar *
+ibus_get_socket_path_x11_compat (void)
+{
+    static gchar *path = NULL;
+    if (path == NULL)
+        path = ibus_get_socket_path_internal (TRUE, NULL);
+    return path;
+}
+
+static const gchar *
+ibus_get_socket_path_gnome_xwayland_compat (void)
+{
+    static gchar *path = NULL;
+    if (path == NULL) {
+        gint setup_display_number;
+        gchar *client_display;
+        gchar **tokens;
+
+        tokens = g_strsplit (ibus_get_socket_path_x11_compat (), "-", 3);
+        if (tokens[0] != NULL && tokens[1] != NULL && tokens[2] != NULL) {
+            setup_display_number = g_strtod(tokens[2], NULL);
+            if (setup_display_number > 0) {
+                client_display = g_strdup_printf (":%d", setup_display_number - 1);
+                path = ibus_get_socket_path_internal (TRUE, client_display);
+            }
         }
 
-        if (_display == NULL) {
+        g_strfreev (tokens);
+    }
+    return path;
+}
+
+static const gchar *
+ibus_get_socket_path_internal (gboolean compat, gchar *client_display)
+{
+    gchar *path = NULL;
+
+    gchar *hostname = "unix";
+    gchar *display;
+    gchar *displaynumber = "0";
+    /* gchar *screennumber = "0"; */
+    gboolean is_wayland = FALSE;
+    gchar *p;
+
+    path = g_strdup (g_getenv ("IBUS_ADDRESS_FILE"));
+    if (path != NULL) {
+        return path;
+    }
+
+    if (_display == NULL) {
+        if (compat) {
+            if (client_display == NULL)
+                display = g_strdup (g_getenv ("DISPLAY"));
+            else
+                display = client_display;
+        } else {
             display = g_strdup (g_getenv ("WAYLAND_DISPLAY"));
             if (display)
                 is_wayland = TRUE;
-            else
+            else if (client_display == NULL)
                 display = g_strdup (g_getenv ("DISPLAY"));
+            else
+                display = client_display;
         }
-        else {
-            display = g_strdup (_display);
-        }
-
-        if (is_wayland) {
-            displaynumber = display;
-        } else if (display) {
-            p = display;
-            hostname = display;
-            for (; *p != ':' && *p != '\0'; p++);
+    }
+    else {
+        display = g_strdup (_display);
+    }
 
-            if (*p == ':') {
-                *p = '\0';
-                p++;
-                displaynumber = p;
-            }
+    if (is_wayland) {
+        displaynumber = display;
+    } else if (display) {
+        p = display;
+        hostname = display;
+        for (; *p != ':' && *p != '\0'; p++);
+
+        if (*p == ':') {
+            *p = '\0';
+            p++;
+            displaynumber = p;
+        }
 
-            for (; *p != '.' && *p != '\0'; p++);
+        for (; *p != '.' && *p != '\0'; p++);
 
-            if (*p == '.') {
-                *p = '\0';
-                p++;
-                /* Do not use screennumber
-                 screennumber = p; */
-            }
+        if (*p == '.') {
+            *p = '\0';
+            p++;
+            /* Do not use screennumber
+             screennumber = p; */
         }
+    }
 
-        if (hostname[0] == '\0')
-            hostname = "unix";
+    if (hostname[0] == '\0')
+        hostname = "unix";
+
+    p = g_strdup_printf ("%s-%s-%s",
+                         ibus_get_local_machine_id (),
+                         hostname,
+                         displaynumber);
+    /* Qt5 IBus module has a hard-coded path and we cannot change this
+     * for the back compatibility.
+     * XDG_RUNTIME_DIR is not useful because it's generated by
+     * login but not `su` command and ibus-daemon can be run with `su`
+     * and we may change the path to XDG_CACHE_HOME in the future.
+     */
+    path = g_build_filename (g_get_user_config_dir (),
+                             "ibus",
+                             "bus",
+                             p,
+                             NULL);
+    g_free (p);
+    g_free (display);
 
-        p = g_strdup_printf ("%s-%s-%s",
-                             ibus_get_local_machine_id (),
-                             hostname,
-                             displaynumber);
-        /* Qt5 IBus module has a hard-coded path and we cannot change this
-         * for the back compatibility.
-         * XDG_RUNTIME_DIR is not useful because it's generated by
-         * login but not `su` command and ibus-daemon can be run with `su`
-         * and we may change the path to XDG_CACHE_HOME in the future.
-         */
-        path = g_build_filename (g_get_user_config_dir (),
-                                 "ibus",
-                                 "bus",
-                                 p,
-                                 NULL);
-        g_free (p);
-        g_free (display);
-    }
     return path;
 }
 
@@ -248,19 +301,45 @@
     return address;
 }
 
+static void ibus_write_address_internal (const gchar *address, const gchar *socket_path);
+
 void
 ibus_write_address (const gchar *address)
 {
+    const gchar *socket_path;
+    const gchar *socket_path_compat;
+
+    socket_path = ibus_get_socket_path ();
+    ibus_write_address_internal (address, socket_path);
+
+    if (g_getenv ("WAYLAND_DISPLAY") != NULL) {
+        socket_path_compat = ibus_get_socket_path_x11_compat ();
+        ibus_write_address_internal (address, socket_path_compat);
+
+        if (g_getenv ("GNOME_SETUP_DISPLAY") != NULL &&
+            strcmp (g_getenv ("GNOME_SETUP_DISPLAY"), g_getenv ("DISPLAY")) == 0) {
+            /* Running from gnome-shell with the setup display; write the socket
+             * address to an additional path for X11 clients */
+            socket_path_compat = ibus_get_socket_path_gnome_xwayland_compat ();
+            if (socket_path_compat != NULL)
+                ibus_write_address_internal (address, socket_path_compat);
+        }
+    }
+}
+
+static void
+ibus_write_address_internal (const gchar *address, const gchar *socket_path)
+{
     FILE *pf;
     gchar *path;
     g_return_if_fail (address != NULL);
 
-    path = g_path_get_dirname (ibus_get_socket_path ());
+    path = g_path_get_dirname (socket_path);
     g_mkdir_with_parents (path, 0700);
     g_free (path);
 
-    g_unlink (ibus_get_socket_path ());
-    pf = fopen (ibus_get_socket_path (), "w");
+    g_unlink (socket_path);
+    pf = fopen (socket_path, "w");
     g_return_if_fail (pf != NULL);
 
     fprintf (pf,