# 13apr23 Software Lab. Alexander Burger

# Exit on error
(de *Err
   (prinl *Pid " ! " (stamp) " [" *Adr " " (host *Adr) "] " *Agent)
   (for ("L" (trail T)  "L")
      (cond
         ((pair (car "L"))
            (let "E" (++ "L")
               (println
                  (if (getd (box? (car "E")))
                     (cons @ (cdr "E"))
                     "E" ) ) ) )
         ((== '"L" (car "L"))
            (setq "L" (cddr "L")) )
         (T
            (space 3)
            (println (++ "L") (++ "L")) ) ) )
   (println '====)
   (show This)
   (println '*Uri (pack *Uri))
   (println '*Host (pack *Host))
   (for "X" '(*Port *SesId *ConId *Tab *Gui *Btn *Get *ID)
      (println "X" (val "X")) )
   (println '*PRG *PRG (val *PRG))
   (rollback) )

# User identification
(de user (Pid1 Pid2 Nm To)
   (nond
      (Pid1 (tell 'user *Pid))
      (Pid2
         (tell 'user Pid1 *Pid (get *Login 'nm)
            (/ (- *Timeout (cadr (assoc -1 *Run))) 60000) ) )
      ((<> *Pid Pid1) (println Pid2 Nm To)) ) )

# Timestamp
(msg *Pid " + " (stamp))
(flush)

# Extend 'app' function
(conc (last app)
   '((msg *Pid " + " (stamp) " [" *Adr " " (host *Adr) (and *Cipher (pack " / " @)) "] " *Agent)) )

# Bye message
(push '*Fork
   '(finish (and *SesId (msg *Pid " - " (stamp)))) )