Description: Patch to make 4.2.1 compatible with Debian's 4.1.0 and
 4.2.0 packages 4.2.1 includes the Debian patches to extend the login
 name and $TERM length, but uses even larger values. This causes
 screen clients to no more be able to talk to older screen
 servers. See #644788 for a discussion of the same issue with earlier
 release combinations (4.1.0 vs 4.0.3).
 .
 For now this patch sets the mentioned values back to those which
 werew in use in Debian before (and seemed to be large enough for use
 in Debian).
Author: Axel Beckert <abe@debian.org>
Forwarded: no

--- a/os.h
+++ b/os.h
@@ -524,6 +524,6 @@
 /* Changing those you won't be able to attach to your old sessions
  * when changing those values in official tree don't forget to bump
  * MSG_VERSION */
-#define MAXTERMLEN	32
-#define MAXLOGINLEN	256
+#define MAXTERMLEN	40
+#define MAXLOGINLEN	50
 
--- a/screen.h
+++ b/screen.h
@@ -186,7 +186,7 @@
  * 4:	screen version 4.2.1		(bumped once again due to changed terminal and login length)
  * 5: 	screen version 4.4.0		(fix screenterm size)
  */
-#define MSG_VERSION	5
+#define MSG_VERSION	2
 
 #define MSG_REVISION	(('m'<<24) | ('s'<<16) | ('g'<<8) | MSG_VERSION)
 struct msg
@@ -205,7 +205,7 @@
 	  int nargs;
 	  char line[MAXPATHLEN];
 	  char dir[MAXPATHLEN];
-	  char screenterm[MAXTERMLEN + 1];	/* is screen really "screen" ? */
+	  char screenterm[20];	/* is screen really "screen" ? */
 	}
       create;
       struct
--- a/socket.c
+++ b/socket.c
@@ -723,8 +723,8 @@
       return;
     }
   if (nwin->term != nwin_undef.term)
-    strncpy(m.m.create.screenterm, nwin->term, MAXTERMLEN);
-  m.m.create.screenterm[MAXTERMLEN] = '\0';
+    strncpy(m.m.create.screenterm, nwin->term, 20-1);
+  m.m.create.screenterm[20-1] = '\0';
   m.protocol_revision = MSG_REVISION;
   debug1("SendCreateMsg writing '%s'\n", m.m.create.line);
   if (write(s, (char *) &m, sizeof m) != sizeof m)