Description: Implement interface statistics for GNU/kFreeBSD.
 The original source for "netload" uses "/proc/net/dev"
 to collect information on networkinterfaces. This is not
 trustworthy for GNU/kFreeBSD. An alternate source using
 getifaddrs(3) is here introduced for *BSD.
 .
 The present implementation works on GNU/Linux, GNU/kFreeBSD,
 FreeBSD, and OpenBSD.
 .
 The format string for parsing the content of "/proc/net/dev"
 is incorrect, an additional item is present in the string.
 .
 A large number of other buffer overrun problems are also
 meded. The are relevant also for GNU/Linux.
Author: Mats Erik Andersson <debian@gisladisker.se>
Forwarded: no
Last-Update: 2011-01-11

--- netdiag-1.0/netload-1.2.2/Makefile	2007-07-11 19:02:08.000000000 +0200
+++ netdiag-1.0/netload-1.2.2/Makefile	2011-01-11 00:05:16.000000000 +0100
@@ -3,7 +3,7 @@
 TARGET=		"/usr/local/bin/"	
 MANTARGET=	"/usr/share/man/man1"
 all :
-	$(CC) netload.c -o netload $(CLIBS)
+	$(CC) $(CFLAGS) netload.c -o netload $(CLIBS)
 
 install:
 	install -m 755 netload $(TARGET) 
--- netdiag-1.0/netload-1.2.2/netload.c	2007-07-11 17:37:38.000000000 +0200
+++ netdiag-1.0/netload-1.2.2/netload.c	2011-01-11 13:54:55.000000000 +0100
@@ -19,14 +19,32 @@
 #include <curses.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <time.h>
 #include <signal.h>
 #include <math.h>
 
+#ifndef __linux__
+  /* Targeted at *BSD, using getifaddrs(3). */
+# include <errno.h>
+# include <sys/param.h>
+# include <sys/socket.h>
+# include <net/if.h>
+# include <ifaddrs.h>
+#endif /* !__linux__ */
+
 #define CMD_LINE  fprintf (stderr,"usage : netload device [-t secs] \n\tnetload -setup\n")
 #define MAILER "/usr/lib/sendmail -t "
 #define PROC_DEV_SIZE 10000
 
+#ifndef IF_NAMESIZE
+#  define IF_NAMESIZE 16
+#endif
+
+#ifndef MAXPATHLEN
+#  define MAXPATHLEN 512
+#endif
+
 WINDOW *panel;
 WINDOW *lever;
 WINDOW *credit;
@@ -35,10 +53,10 @@
 int INIT = 0;
 long long int old_rec=0;
 long long int old_trans=0;
-long long temp_load=0;
-long long max_sofar=0;
+long long int temp_load=0;
+long long int max_sofar=0;
 
-int alarm=0;  /* High-load alarm */
+int hlalarm=0;  /* High-load alarm */
 int salarm=0; /* sound alarm */
 int ealarm=0; /* email notification */
 int aperiod; /* period for re-activating the email alarm */
@@ -64,7 +82,7 @@
 ******************************************************************************************************************************/
 
 
-main (int argc, char *argv[])
+int main (int argc, char *argv[])
 {
 
 FILE *source;
@@ -74,7 +92,7 @@
 int dormant;
 int scale;
 int argument_length;
-char mask [6];
+char mask [IF_NAMESIZE + 4];
 
 initscr ();
 nonl();
@@ -90,6 +108,13 @@
 
 scale = check_netloadrc (argv[1]); /* check status of .netloadrc, plus getting the alarm and scale factor settings of the device */
 
+if (scale == 0)
+  {
+    fprintf (stderr, "Unable to set positive scaling factor. Aborting.\n");
+    endwin ();
+    exit (1);
+  }
+
 signal (SIGINT,reset);
 
 if (argc > 2)
@@ -101,9 +126,10 @@
 	setup_netload ();
 
 
-
-line = malloc (100*sizeof (char));
-
+#ifndef __linux__
+/* The parse string variable within main(). */
+line = malloc (MAXPATHLEN);
+#endif
 
 init_pair (COLOR_CYAN,COLOR_CYAN, COLOR_BLACK);
 init_pair (COLOR_RED, COLOR_RED, COLOR_BLACK );
@@ -111,9 +137,12 @@
 init_pair (COLOR_BLUE, COLOR_BLUE,COLOR_BLACK);
 
 
-strcpy (mask,argv[1]);
-argument_length = strlen (argv[1]);
-mask [argument_length]=':';
+strncpy (mask, argv[1], sizeof (mask));
+mask [sizeof (mask) - 1] = '\0';
+argument_length = (strlen (argv[1]) < IF_NAMESIZE)
+			? strlen (argv[1]) : IF_NAMESIZE;
+mask [argument_length] = ':';
+mask [argument_length + 1] = '\0';
 
 panel = newwin (15,60,7,10);
 
@@ -123,6 +152,7 @@
 
 while (1)
   {
+#ifdef __linux__
     if ((source=fopen ("/proc/net/dev","r")) == NULL)
 	{
 	fprintf (stderr, "Couldn't open source file\n");
@@ -139,11 +169,72 @@
 	endwin ();
 	exit (1);
       } 
- 
+#else /* !__linux__ */
+  /* An interface statistics line will be simulated by
+   * figures collected from a call to getifaddrs(3).   */
+  struct ifaddrs *ifaddr, *ifa;
+  struct if_data *if_data = NULL;
+
+  if (getifaddrs (&ifaddr) < 0)
+    {
+      fprintf (stderr, "Could not access interface data: %s.\n",
+		strerror (errno));
+      endwin ();
+      exit (1);
+    }
+
+  for (ifa = ifaddr; ifa; ifa = ifa->ifa_next)
+    {
+      if ((strcmp (ifa->ifa_name, argv[1]) == 0)
+	    && (ifa->ifa_addr->sa_family == AF_LINK))
+	{
+	  if_data = ifa->ifa_data;
+	  break;
+	}
+    }
+
+  if ((ifa == NULL) || (if_data == NULL))
+    {
+      freeifaddrs (ifaddr);
+      fprintf (stderr,"Device \"%s\" not found\n", argv[1]);
+      endwin ();
+      exit (1);
+    }
+
+# ifdef __OpenBSD__
+#   define FORMAT "%s: %ju %ju %ju %ju %lu %lu %lu %ju" \
+		    " %ju %ju %ju %lu %lu %ju %lu %lu\n"
+# else
+#   define FORMAT "%s: %lu %lu %lu %lu %lu %lu %lu %lu" \
+		    " %lu %lu %lu %lu %lu %lu %lu %lu\n"
+#endif
+
+  /* Collect the available information. */
+  snprintf (line, MAXPATHLEN, FORMAT,
+		/* Input section. */
+		 ifa->ifa_name,
+		 if_data->ifi_ibytes, if_data->ifi_ipackets,
+		 if_data->ifi_ierrors, if_data->ifi_iqdrops,
+		 0L, 0L, 0L, /* rfifo, rframe, rcompressed, */
+		 if_data->ifi_imcasts,
+		/* Output section. */
+		 if_data->ifi_obytes, if_data->ifi_opackets,
+		 if_data->ifi_oerrors,
+		 0L, 0L, /* sdrop, sfifo */
+		 if_data->ifi_collisions,
+		 (long unsigned int) if_data->ifi_link_state,
+		 0L); /* scompressed */
+
+  freeifaddrs (ifaddr);
+#endif /* !__linux__ */
 
   show_load (line,scale,dormant);
-  lseek (source,0,SEEK_SET);
+
+#ifdef __linux__
+  lseek (fileno (source), 0, SEEK_SET);
   fclose (source);
+#endif
+
   sleep (dormant);
 
   }
@@ -160,7 +251,7 @@
 void show_load (char *line,int scale,int dormant)
 {
 
-char device [5];
+char device [IF_NAMESIZE];
 
 long long int rbytes, rec_load, trans_load, total_load, sbytes=0; 
 long long int rcompressed, colls, compressed, multicast,packets,rpackets;
@@ -171,9 +262,13 @@
 
 int load_level;
 
+#ifdef __GLIBC__
+#  define SCANFORMAT "%[^:]: %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld\n"
+#else /* __OpenBSD__ || __FreeBSD__ */
+#  define SCANFORMAT "%[^:]: %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld\n"
+#endif
 
-
-    sscanf (line,"%[^:]: %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld %Ld\n",&device,&rbytes,&rpackets,&rerrors,&rdrop,&rfifo,&rframe,&rcompressed,&multicast, &sbytes, &packets,&errors,&drop,&fifo,&colls,&carrier,&compressed);
+    sscanf (line, SCANFORMAT, device,&rbytes,&rpackets,&rerrors,&rdrop,&rfifo,&rframe,&rcompressed,&multicast, &sbytes, &packets,&errors,&drop,&fifo,&colls,&carrier,&compressed);
 
 
 
@@ -183,13 +278,13 @@
     wprintw (INFO,"ERRORS\t  DROP\tFIFO");    
     wmove (INFO,3,1);
 
-    wprintw (INFO,"RECV\t%Ld",rbytes);
+    wprintw (INFO,"RECV\t%lld",rbytes);
     wmove (INFO,3,27);
-    wprintw (INFO,"%Ld\t  %Ld\t  %Ld",rerrors,rdrop,rfifo);
+    wprintw (INFO,"%lld\t  %lld\t  %lld",rerrors,rdrop,rfifo);
     wmove (INFO,4,1);
-    wprintw (INFO,"TRANS\t%Ld",sbytes);
+    wprintw (INFO,"TRANS\t%lld",sbytes);
     wmove (INFO,4,27);
-    wprintw (INFO,"%Ld\t  %Ld\t  %Ld",errors,drop,fifo);
+    wprintw (INFO,"%lld\t  %lld\t  %lld",errors,drop,fifo);
     
 
     rec_load = rbytes - old_rec; 
@@ -229,21 +324,21 @@
     werase (panel);
     werase (lever);
     wmove (panel,1,5);
-    wprintw (panel,"Maximum device load %Ld (%s)",max_sofar,current_time);
+    wprintw (panel,"Maximum device load %lld (%s)",max_sofar,current_time);
     wmove (panel,2,1);
-    whline (panel,0,58); 
+    whline (panel, '-', 58); 
     wmove (panel,4,14);
     wattrset (panel,A_BOLD);
     wprintw (panel, "Relative Load in %d sec(s) step",dormant);
     wmove (panel,6,15);
     wattrset (panel,COLOR_PAIR (COLOR_CYAN));
-    wprintw (panel, "Received  \t %Ld",rec_load); 
+    wprintw (panel, "Received  \t %lld", rec_load); 
  
     wmove (panel,7,15);
-    wprintw (panel, "Transmitted\t %Ld",trans_load);
+    wprintw (panel, "Transmitted\t %lld", trans_load);
 
     wmove (panel,8,15);
-    wprintw (panel, "Total load\t %Ld",rec_load + trans_load);
+    wprintw (panel, "Total load\t %lld", rec_load + trans_load);
 
     
     wmove (panel,13,22);
@@ -266,11 +361,10 @@
 	if (load_level >20 && load_level < 40)
 		{
 		wattrset (lever,COLOR_PAIR (COLOR_GREEN));
-		COLOR_PAIR (COLOR_GREEN);
 		}
 	if (load_level > 40)
 		{
-		if ( alarm==1)
+		if ( hlalarm==1)
 			{
 			if (salarm == 1) 
 			     beep ();
@@ -279,7 +373,6 @@
 			}	
 						
 		wattrset (lever,COLOR_PAIR (COLOR_RED)); 
-		COLOR_PAIR (COLOR_RED);
 		}
       	for (marks=0;marks < load_level+1;marks++)	
 			wechochar (lever,ACS_BLOCK); 
@@ -305,7 +398,8 @@
 char *time_holder;
 time (&reloj);
 time_holder = ctime (&reloj);
-time_holder [24] =0;
+/* Remove NL. */
+time_holder [strlen (time_holder) - 1] = '\0';
 return (time_holder);
 }
 
@@ -369,10 +463,10 @@
 
 FILE *source;
 
-char *line;
-char *period;
+char *line, *line_str, *home;
+char *period, *period_str;
 char content [10000];
-char mask [6];
+char mask [IF_NAMESIZE + 4];
 int argument_length;
 int filesize=0;
 int counter=1;
@@ -380,18 +474,34 @@
 
 endwin ();
 
-netrc= malloc ( 100*sizeof (char));
-netrc = getenv ("HOME");
-netrc = strcat ( netrc,"/.netloadrc");
+netrc = malloc (MAXPATHLEN);
+netrc[0] = '\0';
+home = getenv ("HOME");
 
-strcpy (mask,device);
-argument_length = strlen (device);
-mask [argument_length]=':';
+/* Check that HOME was set. */
+if (home == NULL)
+  {
+    fprintf (stderr, "Unable to detect path for HOME.\n");
+    /* Report scaling naught to abort further action. */
+    return 0;
+  }
 
+strncpy (netrc, home, MAXPATHLEN);
+netrc[MAXPATHLEN - 1] = '\0';
 
+strncat (netrc, "/.netloadrc", MAXPATHLEN - strlen ("/.netloadrc"));
 
-line = malloc (10000*sizeof (char));
-period = malloc (10000*sizeof (char));
+strncpy (mask, device, sizeof (mask));
+mask [sizeof (mask) - 1] = '\0';
+argument_length = (strlen (device) < IF_NAMESIZE)
+			? strlen (device) : IF_NAMESIZE;
+mask [argument_length] = ':';
+mask [argument_length + 1] = '\0';
+
+
+/* Local parse string variable. */
+line = line_str = malloc (10000*sizeof (char));
+period = period_str = malloc (10000*sizeof (char));
 
 
 if ((source=fopen (netrc,"r")) == NULL)
@@ -442,7 +552,7 @@
     line = strstr (content,mask);
 
     if ( strstr ( content,"alarm:1" )) 
-	alarm=1;
+	hlalarm=1;
 	
    if ( strstr ( content,"sound:1" )) 
 	salarm=1;
@@ -483,7 +593,8 @@
 sfactor = atoi (line);
 
 fclose (source);
-
+free (period_str);
+free (line_str);
 
 return ( sfactor );
 
@@ -526,15 +637,17 @@
     fprintf (mail, "\n\nSnapshot of device %s  ( All the values are in Bytes )\n\n", device);
     fprintf (mail, "Time of High-load : %s\n", current_time);
     fprintf (mail, "Time for next email check: %d minutes\n\n", aperiod/60);
-    fprintf (mail, "Total Received:\t\t %Ld\n", rbytes);
-    fprintf (mail, "Total Sent:\t\t %Ld\n\n", sbytes); 
-    fprintf (mail, "Rec. in the last %d seconds:\t\t%Ld\n",dormant, rec_load);  
-    fprintf (mail, "Sent in the last %d seconds:\t\t%Ld\n",dormant, trans_load);   
-    fprintf (mail, "Total in the last %d seconds:\t\t%Ld\n\n\n",dormant, rec_load+trans_load);
-    fprintf (mail, "Average # Bytes per second: %Ld\n", total_load);  
+    fprintf (mail, "Total Received:\t\t %lld\n", rbytes);
+    fprintf (mail, "Total Sent:\t\t %lld\n\n", sbytes); 
+    fprintf (mail, "Rec. in the last %d seconds:\t\t%lld\n",dormant, rec_load);  
+    fprintf (mail, "Sent in the last %d seconds:\t\t%lld\n",dormant, trans_load);   
+    fprintf (mail, "Total in the last %d seconds:\t\t%lld\n\n\n",dormant, rec_load+trans_load);
+    fprintf (mail, "Average # Bytes per second: %lld\n", total_load);  
     pclose(mail);
 
 aflag=0;
+free (message);
 
+return 0;
 }