File launcher-buffer-overwrite.patch of Package shellinabox

diff -Pdpur shellinabox-2.14.orig/shellinabox/launcher.c shellinabox-2.14/shellinabox/launcher.c
--- shellinabox-2.14.orig/shellinabox/launcher.c	2012-04-21 19:30:44.000000000 +0200
+++ shellinabox-2.14/shellinabox/launcher.c	2013-02-06 15:03:12.205151893 +0100
@@ -523,7 +523,7 @@ int launchChild(int service, struct Sess
   request->width       = session->width;
   request->height      = session->height;
   strncat(request->peerName, httpGetPeerName(session->http),
-          sizeof(request->peerName) - 1);
+          sizeof(request->peerName) - strlen(request->peerName) - 1);
   request->urlLength   = strlen(u);
   memcpy(&request->url, u, request->urlLength);
   free(u);
@@ -576,10 +576,10 @@ void initUtmp(struct Utmp *utmp, int use
   dcheck(!strncmp(ptyPath, "/dev/pts", 8) ||
          !strncmp(ptyPath, "/dev/pty", 8) ||
          !strncmp(ptyPath, "/dev/tty", 8));
-  strncat(&utmp->utmpx.ut_line[0], ptyPath + 5,   sizeof(utmp->utmpx.ut_line) - 1);
-  strncat(&utmp->utmpx.ut_id[0],   ptyPath + 8,   sizeof(utmp->utmpx.ut_id) - 1);
-  strncat(&utmp->utmpx.ut_user[0], "SHELLINABOX", sizeof(utmp->utmpx.ut_user) - 1);
-  strncat(&utmp->utmpx.ut_host[0], peerName,      sizeof(utmp->utmpx.ut_host) - 1);
+  strncat(&utmp->utmpx.ut_line[0], ptyPath + 5,   sizeof(utmp->utmpx.ut_line) - strlen(utmp->utmpx.ut_line) - 1);
+  strncat(&utmp->utmpx.ut_id[0],   ptyPath + 8,   sizeof(utmp->utmpx.ut_id) - strlen(utmp->utmpx.ut_id) - 1);
+  strncat(&utmp->utmpx.ut_user[0], "SHELLINABOX", sizeof(utmp->utmpx.ut_user) - strlen(utmp->utmpx.ut_user) - 1);
+  strncat(&utmp->utmpx.ut_host[0], peerName,      sizeof(utmp->utmpx.ut_host) - strlen(utmp->utmpx.ut_host) - 1);
   struct timeval tv;
   check(!gettimeofday(&tv, NULL));
   utmp->utmpx.ut_tv.tv_sec  = tv.tv_sec;