Commit e81c0d8a by pdw

Fix to avoid system call in text mode wherever possible.

Robert Scheck <robert@fedoraproject.org>
parent ff057367
......@@ -74,7 +74,7 @@ dnl Fairly generic checks.
dnl
dnl Checks for system headers.
AC_CHECK_HEADERS(sys/ioctl.h sys/time.h sys/sockio.h unistd.h)
AC_CHECK_HEADERS([sgtty.h sys/ioctl.h sys/time.h sys/sockio.h termio.h termios.h unistd.h])
dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
......
/*
* tui.c:
*
* Based on ui.c from the original iftop sources.
*
* This user interface does not make use of curses. Instead, it prints its
* output to STDOUT. This output is activated by providing the '-t' flag.
*
*/
#include "config.h"
#include <string.h>
#include <stdio.h>
#include <signal.h>
#include <unistd.h>
#if defined(HAVE_TERMIOS_H)
#include <termios.h>
#elif defined(HAVE_SGTTY_H) && defined(TIOCSETP)
#include <sys/ioctl.h>
#include <sgtty.h>
#elif defined(HAVE_TERMIO_H)
#include <sys/ioctl.h>
#include <termio.h>
#else
#include <stdlib.h>
#endif
#include "sorted_list.h"
#include "options.h"
#include "ui_common.h"
/* Width of the host column in the output */
#define PRINT_WIDTH 40
/*
* UI print function
*/
void tui_print() {
sorted_list_node* nn = NULL;
char host1[HOSTNAME_LENGTH], host2[HOSTNAME_LENGTH];
char buf0_10[10], buf1_10[10], buf2_10[10];
int j;
static char *label;
static char *labellong;
int l = 0;
if (!label) {
xfree(label);
label = (char *)calloc(PRINT_WIDTH + 1, 1);
}
if (!labellong) {
xfree(labellong);
labellong = (char *)calloc(PRINT_WIDTH + 1 + 9, 1);
}
if (options.paused ) {
return;
}
/* Headings */
snprintf(label, PRINT_WIDTH, "%-*s", PRINT_WIDTH, "Host name (port/service if enabled)");
printf("%s %s %10s %10s %10s %10s\n", " #", label, "last 2s", "last 10s", "last 40s", "cumulative");
/* Divider line */
for (j = 0; j < PRINT_WIDTH + 52; j++) {
printf("-");
}
printf("\n");
/* Traverse the list of all connections */
while((nn = sorted_list_next_item(&screen_list, nn)) != NULL && l < options.num_lines) {
/* Increment the line counter */
l++;
/* Get the connection information */
host_pair_line* screen_line = (host_pair_line*)nn->data;
/* Assemble host information */
sprint_host(host1, screen_line->ap.af, &(screen_line->ap.src6), screen_line->ap.src_port, screen_line->ap.protocol, PRINT_WIDTH, options.aggregate_src);
sprint_host(host2, screen_line->ap.af, &(screen_line->ap.dst6), screen_line->ap.dst_port, screen_line->ap.protocol, PRINT_WIDTH, options.aggregate_dest);
/* Send rate per connection */
printf("%4d %s%s", l, host1, " =>");
for(j = 0; j < HISTORY_DIVISIONS; j++) {
readable_size(screen_line->sent[j], buf0_10, 10, 1024, options.bandwidth_in_bytes);
printf(" %10s", buf0_10);
}
/* Cumulative sent data per connection */
readable_size(screen_line->total_sent, buf0_10, 10, 1024, 1);
printf(" %10s\n", buf0_10);
/* Receive rate per connection */
printf(" %s%s", host2, " <=");
for(j = 0; j < HISTORY_DIVISIONS; j++) {
readable_size(screen_line->recv[j], buf0_10, 10, 1024, options.bandwidth_in_bytes);
printf(" %10s", buf0_10);
}
/* Cumulative received data per connection */
readable_size(screen_line->total_recv, buf0_10, 10, 1024, 1);
printf(" %10s\n", buf0_10);
}
/* Divider line */
for (j = 0; j < PRINT_WIDTH + 52; j++) {
printf("-");
}
printf("\n");
/* Rate totals */
snprintf(labellong, PRINT_WIDTH + 9, "%-*s", PRINT_WIDTH + 9, "Total send rate:");
printf("%s ", labellong);
for(j = 0; j < HISTORY_DIVISIONS; j++) {
readable_size((((host_pair_line *)&totals)->sent[j]) , buf0_10, 10, 1024, options.bandwidth_in_bytes);
printf("%10s%c", buf0_10, j == HISTORY_DIVISIONS - 1 ? '\n' : ' ');
}
snprintf(labellong, PRINT_WIDTH + 9, "%-*s", PRINT_WIDTH + 9, "Total receive rate:");
printf("%s ", labellong);
for(j = 0; j < HISTORY_DIVISIONS; j++) {
readable_size((((host_pair_line *)&totals)->recv[j]) , buf0_10, 10, 1024, options.bandwidth_in_bytes);
printf("%10s%c", buf0_10, j == HISTORY_DIVISIONS - 1 ? '\n' : ' ');
}
snprintf(labellong, PRINT_WIDTH + 9, "%-*s", PRINT_WIDTH + 9, "Total send and receive rate:");
printf("%s ", labellong);
for(j = 0; j < HISTORY_DIVISIONS; j++) {
readable_size((((host_pair_line *)&totals)->sent[j] + ((host_pair_line *)&totals)->recv[j]) , buf0_10, 10, 1024, options.bandwidth_in_bytes);
printf("%10s%c", buf0_10, j == HISTORY_DIVISIONS - 1 ? '\n' : ' ');
}
/* Divider line */
for (j = 0; j < PRINT_WIDTH + 52; j++) {
printf("-");
}
printf("\n");
/* Peak traffic */
snprintf(labellong, PRINT_WIDTH + 9, "%-*s", PRINT_WIDTH + 9, "Peak rate (sent/received/total):");
readable_size(peaksent / RESOLUTION, buf0_10, 10, 1024, options.bandwidth_in_bytes);
readable_size(peakrecv / RESOLUTION, buf1_10, 10, 1024, options.bandwidth_in_bytes);
readable_size(peaktotal / RESOLUTION, buf2_10, 10, 1024, options.bandwidth_in_bytes);
printf("%s %10s %10s %10s\n", labellong, buf0_10, buf1_10, buf2_10);
/* Cumulative totals */
snprintf(labellong, PRINT_WIDTH + 9, "%-*s", PRINT_WIDTH + 9, "Cumulative (sent/received/total):");
readable_size(history_totals.total_sent, buf0_10, 10, 1024, 1);
readable_size(history_totals.total_recv, buf1_10, 10, 1024, 1);
readable_size(history_totals.total_recv + history_totals.total_sent, buf2_10, 10, 1024, 1);
printf("%s %10s %10s %10s\n", labellong, buf0_10, buf1_10, buf2_10);
/* Double divider line */
for (j = 0; j < PRINT_WIDTH + 52; j++) {
printf("=");
}
printf("\n\n");
}
/*
* Text interface data structure initializations.
*/
void tui_init() {
screen_list_init();
screen_hash = addr_hash_create();
service_hash = serv_hash_create();
serv_hash_initialise(service_hash);
printf("Listening on %s\n", options.interface);
}
/*
* Tick function indicating screen refresh
*/
void tui_tick(int print) {
if (print) {
tui_print();
}
}
/*
* Main UI loop. Code any interactive character inputs here.
*/
void tui_loop() {
int i;
extern sig_atomic_t foad;
#if defined(HAVE_TERMIOS_H)
struct termios new_termios, old_termios;
tcgetattr(STDIN_FILENO, &old_termios);
new_termios = old_termios;
new_termios.c_lflag &= ~(ICANON|ECHO);
new_termios.c_cc[VMIN] = 1;
new_termios.c_cc[VTIME] = 0;
tcsetattr(STDIN_FILENO, TCSANOW, &new_termios);
#elif defined(HAVE_SGTTY_H) && defined(TIOCSETP)
struct sgttyb new_tty, old_tty;
ioctl(STDIN_FILENO, TIOCGETP, &old_tty);
new_tty = old_tty;
new_tty.sg_flags &= ~(ICANON|ECHO);
ioctl(STDIN_FILENO, TIOCSETP, &new_tty);
#elif defined(HAVE_TERMIO_H)
struct termio new_termio, old_termio;
ioctl(0, TCGETA, &old_termio);
new_termio = old_termio;
new_termio.c_lflag &= ~(ICANON|ECHO);
new_termio.c_cc[VMIN] = 1;
new_termio.c_cc[VTIME] = 0;
ioctl(0, TCSETA, &new_termio);
#else
system("/bin/stty cbreak -echo >/dev/null 2>&1");
#endif
while ((i = getchar()) != 'q' && foad == 0) {
switch (i) {
case 'u':
tick(1);
break;
case 'n':
options.dnsresolution ^= 1;
printf("DNS resolution is %s.\n\n", options.dnsresolution ? "ON" : "OFF");
tick(1);
break;
case 'N':
options.portresolution ^= 1;
printf("Port resolution is %s.\n\n", options.portresolution ? "ON" : "OFF");
tick(1);
break;
case 's':
options.aggregate_src ^= 1;
printf("%s source host\n\n", options.aggregate_src ? "Hide" : "Show");
tick(1);
break;
case 'd':
options.aggregate_dest ^= 1;
printf("%s destination host\n\n", options.aggregate_dest ? "Hide" : "Show");
tick(1);
break;
case 'S':
if (options.showports == OPTION_PORTS_OFF) {
options.showports = OPTION_PORTS_SRC;
}
else if (options.showports == OPTION_PORTS_DEST) {
options.showports = OPTION_PORTS_ON;
}
else if(options.showports == OPTION_PORTS_ON) {
options.showports = OPTION_PORTS_DEST;
}
else {
options.showports = OPTION_PORTS_OFF;
}
printf("Showing ports:%s%s%s%s.\n\n",
options.showports == OPTION_PORTS_SRC ? " src" : "",
options.showports == OPTION_PORTS_DEST ? " dest" : "",
options.showports == OPTION_PORTS_ON ? " both" : "",
options.showports == OPTION_PORTS_OFF ? " none" : "");
tick(1);
break;
case 'D':
if (options.showports == OPTION_PORTS_OFF) {
options.showports = OPTION_PORTS_DEST;
}
else if (options.showports == OPTION_PORTS_SRC) {
options.showports = OPTION_PORTS_ON;
}
else if(options.showports == OPTION_PORTS_ON) {
options.showports = OPTION_PORTS_SRC;
}
else {
options.showports = OPTION_PORTS_OFF;
}
printf("Showing ports:%s%s%s%s.\n\n",
options.showports == OPTION_PORTS_SRC ? " src" : "",
options.showports == OPTION_PORTS_DEST ? " dest" : "",
options.showports == OPTION_PORTS_ON ? " both" : "",
options.showports == OPTION_PORTS_OFF ? " none" : "");
tick(1);
break;
case 'p':
options.showports =
(options.showports == OPTION_PORTS_OFF) ?
OPTION_PORTS_ON :
OPTION_PORTS_OFF;
printf("Showing ports:%s%s%s%s.\n\n",
options.showports == OPTION_PORTS_SRC ? " src" : "",
options.showports == OPTION_PORTS_DEST ? " dest" : "",
options.showports == OPTION_PORTS_ON ? " both" : "",
options.showports == OPTION_PORTS_OFF ? " none" : "");
tick(1);
break;
case 'P':
options.paused ^= 1;
if (options.paused) {
printf("Pausing... press 'P' again to continue.\n");
}
else {
printf("Continuing.\n\n");
tick(1);
}
break;
case 'o':
options.freezeorder ^= 1;
printf("Order %s.\n\n", options.freezeorder ? "frozen" : "unfrozen");
tick(1);
break;
case '1':
options.sort = OPTION_SORT_DIV1;
printf("Sorting by column 1.\n\n");
tick(1);
break;
case '2':
options.sort = OPTION_SORT_DIV2;
printf("Sorting by column 2.\n\n");
tick(1);
break;
case '3':
options.sort = OPTION_SORT_DIV3;
printf("Sorting by column 3.\n\n");
tick(1);
break;
case '<':
options.sort = OPTION_SORT_SRC;
printf("Sorting by column source.\n\n");
tick(1);
break;
case '>':
options.sort = OPTION_SORT_DEST;
printf("Sorting by column destination.\n\n");
tick(1);
break;
default:
break;
}
}
#if defined(HAVE_TERMIOS_H)
tcsetattr(STDIN_FILENO, TCSANOW, &old_termios);
#elif defined(HAVE_SGTTY_H) && defined(TIOCSETP)
ioctl(0, TIOCSETP, &old_tty);
#elif defined(HAVE_TERMIO_H)
ioctl(0, TCSETA, &old_termio);
#else
system("/bin/stty -cbreak echo >/dev/null 2>&1");
#endif
}
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