* Fix wrong signal handler signature
* Fix inet_ntoa prototype and arguments (use `struct in_addr` as an intermediate)
* Fix -Wformat-security
--- a/dispdata.c
+++ b/dispdata.c
@@ -12,6 +12,7 @@
 #include "netwatch.h"
 #include "curs.h"
 #include <sys/time.h>
+#include <sys/socket.h>
 
 #ifdef NEWCURSES_SUPP
 #include <ncurses/curses.h>
@@ -33,7 +34,7 @@
 #include <linux/in.h>
 #endif
 
-
+#include <arpa/inet.h>
 #include <signal.h>
 #include <unistd.h>
 #include <string.h>
@@ -48,7 +49,6 @@ EXT_CREATE_LOCK(inllist);
 EXT_CREATE_LOCK(resolvechange);
 void clearnetresolv ();
 void startnetresolv ();
-char *inet_ntoa ();
 
 #define MAXREFRESH 85
 #define ROUTERSTATSMAX 160
@@ -296,11 +296,14 @@ void print_udp (unsigned char *dp, unsigned short len, char *s)
 void print_icmp (unsigned char *dp, unsigned short len, char *s)
 {
   struct icmphdr *p = (struct icmphdr *) dp;
+  struct in_addr inp = {
+      .s_addr = p->un.gateway
+  };
 
   sprintf (s,
 	   "\\3 ICMP TYPE:\\2%-3d\\3 CODE:\\2%-3d\\3 ID:\\2%-5d\\3 SEQ:\\2%-5d\\3 GATEWAY:\\2%-15s \\3FRAGMTU:\\2%d ",
 	   p->type, p->code, ntohs (p->un.echo.id),
-	   ntohs (p->un.echo.sequence), inet_ntoa (p->un.gateway),
+	   ntohs (p->un.echo.sequence), inet_ntoa (inp),
 	   ntohs (p->un.frag.mtu));
 }
 
@@ -1472,7 +1475,7 @@ void dispdata (int errnum)
 	      fprintf (fpspeclog, "%s\n", ttt);
 	    else
 	      //!!mvprintw (yact, xleft, "%s",ttt);
-	      mvprintw (yact, xleft, ttt);
+	      mvprintw (yact, xleft, "%s", ttt);
 	    attron (col4);
 	    if (current->update)
 	    {
@@ -1720,7 +1723,7 @@ void dispdata (int errnum)
 	      fprintf (fpspeclog, "%s\n", ttt);
 	    else
 	      //!!mvprintw (yact, xright,"%s", ttt);
-	      mvprintw (yact, xright, ttt);
+	      mvprintw (yact, xright, "%s", ttt);
 	    attron (col4);
 	    if (current->update)
 	    {
--- a/netwatch.c
+++ b/netwatch.c
@@ -1137,7 +1137,7 @@ sigfunc signal_intr (int signo, sigfunc func)
 /*
    * Simple Control C and Hangup handler... to clean the screen 
 */
-void intrhandle ()
+void intrhandle (int sig)
 {
   //alarm (0);
   signal_intr (SIGALRM, SIG_DFL);
@@ -1537,7 +1537,7 @@ void indepscreen ()
 
 }
 
-void winchange ()
+void winchange (int sig)
 {
   static struct winsize size;