*** empty log message ***

CHANGES

 Change log for iftop
 $Id$
 
+0.12
+
+Added 1-line display options.
+Added display scrolling.
+
 0.11 08/01/03
 
 Added support for token ring networks

TODO

 Things to do for iftop
 $Id$
 
-* 1-line per host display
-
-* Up and down arrows to scroll through host list
+* Attempt to assign direction based on IP of selected interface for DLT_RAW.
 
 * Search for BSD interface names - need to know what to look for.
 
@@ -18,6 +16,3 @@ $Id$
 
 * Configurable refresh rates.
 
-* Filtering of items included in diplay
-
-* Attempt to assign direction based on IP of selected interface for DLT_RAW.

configure.in

@@ -17,7 +17,7 @@ dnl
 AC_INIT(iftop.c)
 AC_CONFIG_AUX_DIR(config)
 AM_CONFIG_HEADER(config.h)
-AM_INIT_AUTOMAKE(iftop, "0.11")
+AM_INIT_AUTOMAKE(iftop, "0.12pre1")
 
 AC_DEFINE_UNQUOTED(IFTOP_VERSION, "$VERSION", [The iftop version number])
 

iftop.8

@@ -128,6 +128,12 @@ machine.
 \fBS\fP or \fBD\fP toggle the display of source and destination ports
 respectively. \fBp\fP will toggle port display on/off.
 
+.SH DISPLAY TYPE
+
+\fBt\fP cycles through the four line display modes; the default 2-line display,
+with sent and received traffic on separate lines, and 3 1-line displays, with
+sent, received, or total traffic shown.
+
 .SH DISPLAY ORDER
 
 By default, the display is ordered according to the 10s average (2nd column).
@@ -140,7 +146,8 @@ source or destination hostname respectively.
 \fBl\fP allows you to enter a POSIX extended regular expression that will be
 used to filter hostnames shown in the display.  This is a good way to quickly
 limit what is shown on the display.  Note that this happens at a much later
-stage than filter code, and does not affect what is actually captured.
+stage than filter code, and does not affect what is actually captured.  Display
+filters DO NOT affect the totals at the bottom of the screen.
 
 .SH PAUSE DISPLAY / FREEZE ORDER
 
@@ -150,6 +157,11 @@ stage than filter code, and does not affect what is actually captured.
 traffic between hosts not shown on the screen at the time will not be shown at
 all, although it will be included in the totals at the bottom of the screen.
 
+.SH SCROLL DISPLAY
+
+\fBj\fP and \fBk\fP will scroll the display of hosts.  This feature is most
+useful when the display order is frozen (see above).
+
 .SH FILTER CODE
 
 \fBf\fP allows you to edit the filter code whilst iftop running.  This
@@ -170,11 +182,12 @@ you, but is included in the totals.
 
 A more subtle explanation comes about when running in promiscuous mode
 without specifying a \fB-N\fP option.  In this case there is no easy way
-to assign the direction of traffic between two other hosts.  For the
-purposes of the main display this is done in an arbitrary fashion (by
-ordering of IP addresses), but for the sake of totals all traffic
-between other hosts is accounted as incoming, because that's what it is
-from the point of view of your interface.  
+to assign the direction of traffic between two third parties.  For the purposes
+of the main display this is done in an arbitrary fashion (by ordering of IP
+addresses), but for the sake of totals all traffic between other hosts is
+accounted as incoming, because that's what it is from the point of view of your
+interface.  The \fB-N\fP option allows you to specify an arbitrary network
+boundary, and to show traffic flowing across it.
 
 \fBPeak totals don't add up\fP
 

iftop.h

@@ -20,7 +20,7 @@ typedef struct {
     int last_write;
 } history_type;
 
-void tick(void);
+void tick(int print);
 
 void *xmalloc(size_t n);
 void *xcalloc(size_t n, size_t m);

options.c

@@ -98,6 +98,8 @@ static void set_defaults() {
     options.sort = OPTION_SORT_DIV2;
     options.screenfilter = NULL;
     options.freezeorder = 0;
+    options.linedisplay = OPTION_LINEDISPLAY_TWO_LINE;
+    options.screen_offset = 0;
 }
 
 static void die(char *msg) {

options.h

@@ -26,6 +26,13 @@ typedef enum {
   OPTION_SORT_DEST
 } option_sort_t;
 
+typedef enum {
+  OPTION_LINEDISPLAY_TWO_LINE,
+  OPTION_LINEDISPLAY_ONE_LINE_BOTH,
+  OPTION_LINEDISPLAY_ONE_LINE_RECV,
+  OPTION_LINEDISPLAY_ONE_LINE_SENT
+} option_linedisplay_t;
+
 typedef struct {
     /* interface on which to listen */
     char *interface;
@@ -52,6 +59,10 @@ typedef struct {
     char* screenfilter;
     int freezeorder;
 
+    int screen_offset;
+
+    option_linedisplay_t linedisplay;
+
 } options_t;
 
 #endif /* __OPTIONS_H_ */

ui.c

@@ -38,6 +38,7 @@
 " r - toggle DNS host resolution         P - pause display\n"\
 " s - toggle show source host            h - toggle this help display\n"\
 " d - toggle show destination host       b - toggle bar graph display\n"\
+" t - cycle line display mode            j/k - scroll display\n"\
 "                                        f - edit filter code\n"\
 "Port display:                           l - set screen filter\n"\
 " R - toggle service resolution          ! - shell command\n"\
@@ -245,30 +246,60 @@ int history_length(const int d) {
         return history_divs[d] * RESOLUTION;
 }
 
-void draw_line_totals(int y, host_pair_line* line) {
-    int j, L;
+void draw_line_total(float n, int y, int x) {
     char buf[10];
+    readable_size(n, buf, 10, 1024, options.bandwidth_in_bytes);
+    mvaddstr(y, x, buf);
+}
+
+void draw_bar(float n, int y) {
+  int L;
+  mvchgat(y, 0, -1, A_NORMAL, 0, NULL);
+  L = get_bar_length(8 * n);
+  if (L > 0)
+      mvchgat(y, 0, L + 1, A_REVERSE, 0, NULL);
+}
+
+void draw_line_totals(int y, host_pair_line* line, option_linedisplay_t linedisplay) {
+    int j;
     int x = (COLS - 8 * HISTORY_DIVISIONS);
 
     for(j = 0; j < HISTORY_DIVISIONS; j++) {
-        readable_size(line->sent[j], buf, 10, 1024, options.bandwidth_in_bytes);
-        mvaddstr(y, x, buf);
+      switch(linedisplay) {
+        case OPTION_LINEDISPLAY_TWO_LINE:
+          draw_line_total(line->sent[j], y, x);
+          draw_line_total(line->recv[j], y+1, x);
+          break;
+        case OPTION_LINEDISPLAY_ONE_LINE_SENT:
+          draw_line_total(line->sent[j], y, x);
+          break;
+        case OPTION_LINEDISPLAY_ONE_LINE_RECV:
+          draw_line_total(line->recv[j], y, x);
+          break;
+        case OPTION_LINEDISPLAY_ONE_LINE_BOTH:
+          draw_line_total(line->recv[j] + line->sent[j], y, x);
+          break;
+      }
 
-        readable_size(line->recv[j], buf, 10, 1024, options.bandwidth_in_bytes);
-        mvaddstr(y+1, x, buf);
-        x += 8;
+      x += 8;
     }
     
     if(options.showbars) {
-        mvchgat(y, 0, -1, A_NORMAL, 0, NULL);
-        L = get_bar_length(8 * line->sent[BARGRAPH_INTERVAL] );
-        if (L > 0)
-            mvchgat(y, 0, L + 1, A_REVERSE, 0, NULL);
-
-        mvchgat(y+1, 0, -1, A_NORMAL, 0, NULL);
-        L = get_bar_length(8 * line->recv[BARGRAPH_INTERVAL] );
-        if (L > 0)
-            mvchgat(y+1, 0, L + 1, A_REVERSE, 0, NULL);
+      switch(linedisplay) {
+        case OPTION_LINEDISPLAY_TWO_LINE:
+          draw_bar(line->sent[BARGRAPH_INTERVAL],y);
+          draw_bar(line->recv[BARGRAPH_INTERVAL],y+1);
+          break;
+        case OPTION_LINEDISPLAY_ONE_LINE_SENT:
+          draw_bar(line->sent[BARGRAPH_INTERVAL],y);
+          break;
+        case OPTION_LINEDISPLAY_ONE_LINE_RECV:
+          draw_bar(line->recv[BARGRAPH_INTERVAL],y);
+          break;
+        case OPTION_LINEDISPLAY_ONE_LINE_BOTH:
+          draw_bar(line->recv[BARGRAPH_INTERVAL] + line->sent[BARGRAPH_INTERVAL],y);
+          break;
+      }
     }
 }
 
@@ -279,7 +310,7 @@ void draw_totals(host_pair_line* totals) {
     char buf[10];
     int x = (COLS - 8 * HISTORY_DIVISIONS);
     y++;
-    draw_line_totals(y, totals);
+    draw_line_totals(y, totals, OPTION_LINEDISPLAY_TWO_LINE);
     y += 2;
     for(j = 0; j < HISTORY_DIVISIONS; j++) {
         readable_size((totals->sent[j] + totals->recv[j]) , buf, 10, 1024, options.bandwidth_in_bytes);
@@ -513,44 +544,69 @@ void ui_print() {
       mvaddstr(y,0,HELP_MESSAGE);
     }
     else {
+      int i = 0;
+
+      while(i < options.screen_offset && ((nn = sorted_list_next_item(&screen_list, nn)) != NULL)) {
+        i++;
+      }
 
       /* Screen layout: we have 2 * HISTORY_DIVISIONS 6-character wide history
        * items, and so can use COLS - 12 * HISTORY_DIVISIONS to print the two
        * host names. */
 
-      while((y < LINES - 5) && ((nn = sorted_list_next_item(&screen_list, nn)) != NULL)) {
-          int x = 0, L;
-
+      if(i == 0 || nn != NULL) {
+        while((y < LINES - 5) && ((nn = sorted_list_next_item(&screen_list, nn)) != NULL)) {
+            int x = 0, L;
 
-          host_pair_line* screen_line = (host_pair_line*)nn->data;
 
-          if(y < LINES - 5) {
-              L = (COLS - 8 * HISTORY_DIVISIONS - 4) / 2;
-              if(L > HOSTNAME_LENGTH) {
-                  L = HOSTNAME_LENGTH;
-              }
+            host_pair_line* screen_line = (host_pair_line*)nn->data;
 
-              sprint_host(host1, &(screen_line->ap.src), screen_line->ap.src_port, screen_line->ap.protocol, L);
-              sprint_host(host2, &(screen_line->ap.dst), screen_line->ap.dst_port, screen_line->ap.protocol, L);
-              if(!screen_filter_match(host1) && !screen_filter_match(host2)) {
-                continue;
-              }
+            if(y < LINES - 5) {
+                L = (COLS - 8 * HISTORY_DIVISIONS - 4) / 2;
+                if(L > HOSTNAME_LENGTH) {
+                    L = HOSTNAME_LENGTH;
+                }
 
-              mvaddstr(y, x, host1);
-              x += L;
+                sprint_host(host1, &(screen_line->ap.src), screen_line->ap.src_port, screen_line->ap.protocol, L);
+                sprint_host(host2, &(screen_line->ap.dst), screen_line->ap.dst_port, screen_line->ap.protocol, L);
+                if(!screen_filter_match(host1) && !screen_filter_match(host2)) {
+                  continue;
+                }
 
-              mvaddstr(y, x, " => ");
-              mvaddstr(y+1, x, " <= ");
+                mvaddstr(y, x, host1);
+                x += L;
+
+                switch(options.linedisplay) {
+                  case OPTION_LINEDISPLAY_TWO_LINE:
+                    mvaddstr(y, x, " => ");
+                    mvaddstr(y+1, x, " <= ");
+                    break;
+                  case OPTION_LINEDISPLAY_ONE_LINE_BOTH:
+                    mvaddstr(y, x, "<=> ");
+                    break;
+                  case OPTION_LINEDISPLAY_ONE_LINE_SENT:
+                    mvaddstr(y, x, " => ");
+                    break;
+                  case OPTION_LINEDISPLAY_ONE_LINE_RECV:
+                    mvaddstr(y, x, " <= ");
+                    break;
+                }
 
-              x += 4;
+                x += 4;
 
 
-              mvaddstr(y, x, host2);
-              
-              draw_line_totals(y, screen_line);
+                mvaddstr(y, x, host2);
+                
+                draw_line_totals(y, screen_line, options.linedisplay);
 
-          }
-          y += 2;
+            }
+            if(options.linedisplay == OPTION_LINEDISPLAY_TWO_LINE) {
+              y += 2;
+            }
+            else {
+              y += 1;
+            }
+        }
       }
     }
 
@@ -831,6 +887,34 @@ void ui_loop() {
                 options.sort = OPTION_SORT_DEST;
                 showhelp("Sort by dest");
                 break;
+            case 'j':
+                options.screen_offset++;
+                ui_print();
+                break;
+            case 'k':
+                if(options.screen_offset > 0) {
+                  options.screen_offset--;
+                  ui_print();
+                }
+                break;
+            case 't':
+                options.linedisplay = (options.linedisplay + 1) % 4;
+                switch(options.linedisplay) {
+                  case OPTION_LINEDISPLAY_TWO_LINE:
+                    showhelp("Two lines per host");
+                    break;
+                  case OPTION_LINEDISPLAY_ONE_LINE_SENT:
+                    showhelp("Sent traffic only");
+                    break;
+                  case OPTION_LINEDISPLAY_ONE_LINE_RECV:
+                    showhelp("Received traffic only");
+                    break;
+                  case OPTION_LINEDISPLAY_ONE_LINE_BOTH:
+                    showhelp("One line per host");
+                    break;
+                }
+                ui_print();
+                break;
             case 'f': {
                 char *s;
                 dontshowdisplay = 1;