let module decide if alt-gr needs to be ignored

vnc/vnc.c

@@ -190,7 +190,18 @@ lib_mod_event(struct vnc* v, int msg, long param1, long param2,
           v->shift_state = (msg == 15);
           break;
         case 0x0038: /* left-right alt */
-          key = (param2 & 0x0100) ? 0xffea : 0xffe9;
+          if (param2 & 0x0100) /* right alt */
+          {
+            /* only en-us keymap can send right alt(alt-gr) */
+            if (v->keylayout == 0x409)
+            {
+              key = 0xffea;
+            }
+          }
+          else /* left alt */
+          {
+            key = 0xffe9;
+          }
           break;
         case 0x003b: /* F1 */
           key = 0xffbe;
@@ -1102,22 +1113,26 @@ lib_mod_end(struct vnc* v)
 int DEFAULT_CC
 lib_mod_set_param(struct vnc* v, char* name, char* value)
 {
-  if (g_strncasecmp(name, "username", 8) == 0)
+  if (g_strcasecmp(name, "username") == 0)
   {
     g_strncpy(v->username, value, 255);
   }
-  else if (g_strncasecmp(name, "password", 8) == 0)
+  else if (g_strcasecmp(name, "password") == 0)
   {
     g_strncpy(v->password, value, 255);
   }
-  else if (g_strncasecmp(name, "ip", 2) == 0)
+  else if (g_strcasecmp(name, "ip") == 0)
   {
     g_strncpy(v->ip, value, 255);
   }
-  else if (g_strncasecmp(name, "port", 4) == 0)
+  else if (g_strcasecmp(name, "port") == 0)
   {
     g_strncpy(v->port, value, 255);
   }
+  else if (g_strcasecmp(name, "keylayout") == 0)
+  {
+    v->keylayout = g_atoi(value);
+  }
   return 0;
 }
 

vnc/vnc.h

@@ -92,4 +92,5 @@ struct vnc
   char port[256];
   int sck_closed;
   int shift_state; /* 0 up, 1 down */
+  int keylayout;
 };

xrdp/lang.c

@@ -431,54 +431,42 @@ get_char_from_scan_code(int device_flags, int scan_code, int* keys,
   int shift;
   int altgr;
   int ext;
-  int has_altgr;
 
   if (keylayout == 0x40c) /* france */
   {
     keys_noshift = fr_noshift;
     keys_shift = fr_shift;
     keys_altgr = fr_altgr;
-    has_altgr = 1;
   }
   else if (keylayout == 0x809) /* en-uk or en-gb */
   {
     keys_noshift = en_uk_noshift;
     keys_shift = en_uk_shift;
     keys_altgr = en_uk_altgr;
-    has_altgr = 1;
   }
   else if (keylayout == 0x407) /* german */
   {
     keys_noshift = de_noshift;
     keys_shift = de_shift;
     keys_altgr = de_altgr;
-    has_altgr = 1;
   }
   else if (keylayout == 0x416) /* Portuguese (Brazil) */
   {
     keys_noshift = pt_br_noshift;
     keys_shift = pt_br_shift;
     keys_altgr = pt_br_altgr;
-    has_altgr = 1;
   }
   else if (keylayout == 0x410) /* italy */
   {
     keys_noshift = it_noshift;
     keys_shift = it_shift;
     keys_altgr = it_altgr;
-    has_altgr = 1;
   }
   else /* english us 0x409 */
   {
     keys_noshift = en_us_noshift;
     keys_shift = en_us_shift;
     keys_altgr = en_us_altgr;
-    has_altgr = 0;
-  }
-  /* don't send altgr */
-  if (has_altgr && (scan_code == 56) && (device_flags & 0x100))
-  {
-    return 1;
   }
   /*g_writeln("%d %d %x", scan_code, device_flags, keylayout);*/
   shift = keys[42] || keys[54];

xrdp/xrdp_wm.c

@@ -1171,13 +1171,7 @@ xrdp_wm_key(struct xrdp_wm* self, int device_flags, int scan_code)
                                     self->num_lock,
                                     self->scroll_lock,
                                     self->session->client_info->keylayout);
-        /* this means don't send anything */
-        /* used to qvoid sending alt to xserver eg altgr */
-        /* if alt state is down, the xserver avoids the keystroke */
-        if (c == 1)
-        {
-        }
-        else if (c != 0)
+        if (c != 0)
         {
           self->mod->mod_event(self->mod, msg, (unsigned char)c, 0xffff,
                                scan_code, device_flags);