/**
* Object oriented C module to send ICMP and ICMPv6 `echo's.
- * Copyright (C) 2006 Florian octo Forster <octo at verplant.org>
+ * Copyright (C) 2006-2010 Florian octo Forster <octo at verplant.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * the Free Software Foundation; only version 2 of the License is
+ * applicable.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
# error "You don't have the standard C99 header files installed"
#endif /* STDC_HEADERS */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
#if HAVE_MATH_H
# include <math.h>
#endif
# include <signal.h>
#endif
+#if HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#if USE_NCURSES
+# include <ncurses.h>
+#endif
+
#include "oping.h"
+#ifndef _POSIX_SAVED_IDS
+# define _POSIX_SAVED_IDS 0
+#endif
+
typedef struct ping_context
{
char host[NI_MAXHOST];
int req_sent;
int req_rcvd;
-
+
double latency_min;
double latency_max;
double latency_total;
double latency_total_square;
+
+#if USE_NCURSES
+ WINDOW *window;
+#endif
} ping_context_t;
-static double opt_interval = 1.0;
-static int opt_addrfamily = PING_DEF_AF;
-static int opt_count = -1;
+static double opt_interval = 1.0;
+static int opt_addrfamily = PING_DEF_AF;
+static char *opt_srcaddr = NULL;
+static char *opt_device = NULL;
+static char *opt_filename = NULL;
+static int opt_count = -1;
+static int opt_send_ttl = 64;
-void sigint_handler (int signal)
+#if USE_NCURSES
+static WINDOW *main_win = NULL;
+#endif
+
+static void sigint_handler (int signal)
{
+ /* Make compiler happy */
+ signal = 0;
/* Exit the loop */
opt_count = 0;
}
-ping_context_t *context_create (void)
+static ping_context_t *context_create (void)
{
ping_context_t *ret;
ret->latency_total = 0.0;
ret->latency_total_square = 0.0;
+#if USE_NCURSES
+ ret->window = NULL;
+#endif
+
return (ret);
}
-void context_destroy (ping_context_t *context)
+static void context_destroy (ping_context_t *context)
{
+ if (context == NULL)
+ return;
+
+#if USE_NCURSES
+ if (context->window != NULL)
+ {
+ delwin (context->window);
+ context->window = NULL;
+ }
+#endif
+
free (context);
}
-void usage_exit (const char *name)
+static double context_get_average (ping_context_t *ctx) /* {{{ */
+{
+ double num_total;
+
+ if (ctx == NULL)
+ return (-1.0);
+
+ if (ctx->req_rcvd < 1)
+ return (-0.0);
+
+ num_total = (double) ctx->req_rcvd;
+ return (ctx->latency_total / num_total);
+} /* }}} double context_get_average */
+
+static double context_get_stddev (ping_context_t *ctx) /* {{{ */
{
- fprintf (stderr, "Usage: %s [-46] [-c count] [-i interval] host [host [host ...]]\n",
+ double num_total;
+
+ if (ctx == NULL)
+ return (-1.0);
+
+ if (ctx->req_rcvd < 1)
+ return (-0.0);
+ else if (ctx->req_rcvd < 2)
+ return (0.0);
+
+ num_total = (double) ctx->req_rcvd;
+ return (sqrt (((num_total * ctx->latency_total_square)
+ - (ctx->latency_total * ctx->latency_total))
+ / (num_total * (num_total - 1.0))));
+} /* }}} double context_get_stddev */
+
+static void usage_exit (const char *name, int status)
+{
+ int name_length;
+
+ name_length = (int) strlen (name);
+
+ fprintf (stderr, "Usage: %s [OPTIONS] "
+ "-f filename | host [host [host ...]]\n"
+
+ "\nAvailable options:\n"
+ " -4|-6 force the use of IPv4 or IPv6\n"
+ " -c count number of ICMP packets to send\n"
+ " -i interval interval with which to send ICMP packets\n"
+ " -t ttl time to live for each ICMP packet\n"
+ " -I srcaddr source address\n"
+ " -D device outgoing interface name\n"
+ " -f filename filename to read hosts from\n"
+
+ "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
+ "by Florian octo Forster <octo@verplant.org>\n"
+ "for contributions see `AUTHORS'\n",
name);
- exit (1);
+ exit (status);
}
-int read_options (int argc, char **argv)
+static int read_options (int argc, char **argv)
{
int optchar;
while (1)
{
- optchar = getopt (argc, argv, "46c:hi:");
+ optchar = getopt (argc, argv, "46c:hi:I:t:f:D:");
if (optchar == -1)
break;
new_count = atoi (optarg);
if (new_count > 0)
opt_count = new_count;
+ else
+ fprintf(stderr, "Ignoring invalid count: %s\n",
+ optarg);
+ }
+ break;
+
+ case 'f':
+ {
+ if (opt_filename != NULL)
+ free (opt_filename);
+ opt_filename = strdup (optarg);
}
break;
{
double new_interval;
new_interval = atof (optarg);
- if (new_interval >= 0.2)
+ if (new_interval < 0.001)
+ fprintf (stderr, "Ignoring invalid interval: %s\n",
+ optarg);
+ else
opt_interval = new_interval;
}
break;
+ case 'I':
+ {
+ if (opt_srcaddr != NULL)
+ free (opt_srcaddr);
+ opt_srcaddr = strdup (optarg);
+ }
+ break;
+
+ case 'D':
+ opt_device = optarg;
+ break;
+
+ case 't':
+ {
+ int new_send_ttl;
+ new_send_ttl = atoi (optarg);
+ if ((new_send_ttl > 0) && (new_send_ttl < 256))
+ opt_send_ttl = new_send_ttl;
+ else
+ fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
+ optarg);
+ break;
+ }
case 'h':
+ usage_exit (argv[0], 0);
+ break;
default:
- usage_exit (argv[0]);
+ usage_exit (argv[0], 1);
}
}
return (optind);
}
-void print_host (pingobj_iter_t *iter)
+static void print_host (pingobj_iter_t *iter)
{
double latency;
unsigned int sequence;
+ int recv_ttl;
size_t buffer_len;
size_t data_len;
ping_context_t *context;
-
+
+ latency = -1.0;
buffer_len = sizeof (latency);
ping_iterator_get_info (iter, PING_INFO_LATENCY,
&latency, &buffer_len);
+ sequence = 0;
buffer_len = sizeof (sequence);
ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
&sequence, &buffer_len);
+ recv_ttl = -1;
+ buffer_len = sizeof (recv_ttl);
+ ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
+ &recv_ttl, &buffer_len);
+
data_len = 0;
ping_iterator_get_info (iter, PING_INFO_DATA,
NULL, &data_len);
context = (ping_context_t *) ping_iterator_get_context (iter);
+#if USE_NCURSES
+# define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
+#else
+# define HOST_PRINTF(...) printf(__VA_ARGS__)
+#endif
+
context->req_sent++;
if (latency > 0.0)
{
if ((context->latency_min < 0.0) || (context->latency_min > latency))
context->latency_min = latency;
- printf ("%u bytes from %s (%s): icmp_seq=%u time=%.2f ms\n",
- (unsigned int) data_len,
+ HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i "
+ "time=%.2f ms\n",
+ data_len,
context->host, context->addr,
- (unsigned int) sequence, latency);
+ sequence, recv_ttl, latency);
}
else
{
- printf ("echo reply from %s (%s): icmp_seq=%u timeout\n",
+ HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
context->host, context->addr,
- (unsigned int) sequence);
+ sequence);
+ }
+
+#if USE_NCURSES
+ wrefresh (main_win);
+ werase (context->window);
+ box (context->window, 0, 0);
+ mvwprintw (context->window, /* y = */ 0, /* x = */ 5,
+ " %s ping statistics ",
+ context->host);
+ mvwprintw (context->window, /* y = */ 1, /* x = */ 2,
+ "%i packets transmitted, %i received, %.2f%% packet "
+ "loss, time %.1fms",
+ context->req_sent, context->req_rcvd,
+ 100.0 * (context->req_sent - context->req_rcvd) / ((double) context->req_sent),
+ context->latency_total);
+ if (context->req_rcvd != 0)
+ {
+ double average;
+ double deviation;
+
+ average = context_get_average (context);
+ deviation = context_get_stddev (context);
+
+ mvwprintw (context->window, /* y = */ 2, /* x = */ 2,
+ "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms",
+ context->latency_min,
+ average,
+ context->latency_max,
+ deviation);
}
+ wrefresh (context->window);
+#endif
}
-void time_normalize (struct timespec *ts)
+static void time_normalize (struct timespec *ts)
{
while (ts->tv_nsec < 0)
{
}
}
-void time_calc (struct timespec *ts_dest,
+static void time_calc (struct timespec *ts_dest, /* {{{ */
const struct timespec *ts_int,
const struct timeval *tv_begin,
const struct timeval *tv_end)
ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
time_normalize (ts_dest);
-}
+} /* }}} void time_calc */
+
+static int print_header (pingobj_t *ping) /* {{{ */
+{
+ pingobj_iter_t *iter;
+ int i;
+
+#if USE_NCURSES
+ initscr ();
+ cbreak ();
+ noecho ();
+#endif
+
+ i = 0;
+ for (iter = ping_iterator_get (ping);
+ iter != NULL;
+ iter = ping_iterator_next (iter))
+ {
+ ping_context_t *context;
+ size_t buffer_size;
+
+ context = context_create ();
+
+ buffer_size = sizeof (context->host);
+ ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
+
+ buffer_size = sizeof (context->addr);
+ ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
+
+ buffer_size = 0;
+ ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
+
+#if USE_NCURSES
+ context->window = newwin (/* height = */ 4, COLS,
+ /* start y = */ 4*i, /* start x = */ 0);
+ box (context->window, 0, 0);
+ mvwprintw (context->window, /* y = */ 0, /* x = */ 5,
+ " %s ping statistics ",
+ context->host);
+ wrefresh (context->window);
+#else /* !USE_NCURSES */
+ printf ("PING %s (%s) %zu bytes of data.\n",
+ context->host, context->addr, buffer_size);
+#endif
+
+ ping_iterator_set_context (iter, (void *) context);
+
+ i++;
+ }
+
+#if USE_NCURSES
+ delwin (main_win);
+ main_win = newwin (LINES - 4*i, COLS, 4*i, 0);
+ scrollok (main_win, TRUE);
+#endif
+
+ return (0);
+} /* }}} int print_header */
+
+static int print_footer (pingobj_t *ping)
+{
+ pingobj_iter_t *iter;
+
+#if USE_NCURSES
+ endwin ();
+#endif
+
+ for (iter = ping_iterator_get (ping);
+ iter != NULL;
+ iter = ping_iterator_next (iter))
+ {
+ ping_context_t *context;
+
+ context = ping_iterator_get_context (iter);
+
+ printf ("\n--- %s ping statistics ---\n"
+ "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
+ context->host, context->req_sent, context->req_rcvd,
+ 100.0 * (context->req_sent - context->req_rcvd) / ((double) context->req_sent),
+ context->latency_total);
+
+ if (context->req_rcvd != 0)
+ {
+ double average;
+ double deviation;
+
+ average = context_get_average (context);
+ deviation = context_get_stddev (context);
-int main (int argc, char **argv)
+ printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n",
+ context->latency_min,
+ average,
+ context->latency_max,
+ deviation);
+ }
+
+ ping_iterator_set_context (iter, NULL);
+ context_destroy (context);
+ }
+
+ return (0);
+} /* }}} int print_footer */
+
+int main (int argc, char **argv) /* {{{ */
{
pingobj_t *ping;
pingobj_iter_t *iter;
int optind;
int i;
+ int status;
+#if _POSIX_SAVED_IDS
+ uid_t saved_set_uid;
+
+ /* Save the old effective user id */
+ saved_set_uid = geteuid ();
+ /* Set the effective user ID to the real user ID without changing the
+ * saved set-user ID */
+ status = seteuid (getuid ());
+ if (status != 0)
+ {
+ fprintf (stderr, "Temporarily dropping privileges "
+ "failed: %s\n", strerror (errno));
+ exit (EXIT_FAILURE);
+ }
+#endif
optind = read_options (argc, argv);
- if (optind >= argc)
- usage_exit (argv[0]);
-
- if (geteuid () != 0)
+#if !_POSIX_SAVED_IDS
+ /* Cannot temporarily drop privileges -> reject every file but "-". */
+ if ((opt_filename != NULL)
+ && (strcmp ("-", opt_filename) != 0)
+ && (getuid () != geteuid ()))
{
- fprintf (stderr, "Need superuser privileges to open a RAW socket. Sorry.\n");
- return (1);
+ fprintf (stderr, "Your real and effective user IDs don't "
+ "match. Reading from a file (option '-f')\n"
+ "is therefore too risky. You can still read "
+ "from STDIN using '-f -' if you like.\n"
+ "Sorry.\n");
+ exit (EXIT_FAILURE);
+ }
+#endif
+
+ if ((optind >= argc) && (opt_filename == NULL)) {
+ usage_exit (argv[0], 1);
}
if ((ping = ping_construct ()) == NULL)
return (1);
}
+ if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
+ {
+ fprintf (stderr, "Setting TTL to %i failed: %s\n",
+ opt_send_ttl, ping_get_error (ping));
+ }
+
{
double temp_sec;
double temp_nsec;
if (opt_addrfamily != PING_DEF_AF)
ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
- for (i = optind; i < argc; i++)
+ if (opt_srcaddr != NULL)
{
- if (ping_host_add (ping, argv[i]) > 0)
+ if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
{
- fprintf (stderr, "ping_host_add (%s) failed\n", argv[i]);
- continue;
+ fprintf (stderr, "Setting source address failed: %s\n",
+ ping_get_error (ping));
}
}
- for (iter = ping_iterator_get (ping);
- iter != NULL;
- iter = ping_iterator_next (iter))
+ if (opt_device != NULL)
{
- ping_context_t *context;
- size_t buffer_size;
+ if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
+ {
+ fprintf (stderr, "Setting device failed: %s\n",
+ ping_get_error (ping));
+ }
+ }
- context = context_create ();
+ if (opt_filename != NULL)
+ {
+ FILE *infile;
+ char line[256];
+ char host[256];
- buffer_size = sizeof (context->host);
- ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
+ if (strcmp (opt_filename, "-") == 0)
+ /* Open STDIN */
+ infile = fdopen(0, "r");
+ else
+ infile = fopen(opt_filename, "r");
- buffer_size = sizeof (context->addr);
- ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
+ if (infile == NULL)
+ {
+ fprintf (stderr, "Opening %s failed: %s\n",
+ (strcmp (opt_filename, "-") == 0)
+ ? "STDIN" : opt_filename,
+ strerror(errno));
+ return (1);
+ }
- ping_iterator_set_context (iter, (void *) context);
+#if _POSIX_SAVED_IDS
+ /* Regain privileges */
+ status = seteuid (saved_set_uid);
+ if (status != 0)
+ {
+ fprintf (stderr, "Temporarily re-gaining privileges "
+ "failed: %s\n", strerror (errno));
+ exit (EXIT_FAILURE);
+ }
+#endif
+
+ while (fgets(line, sizeof(line), infile))
+ {
+ /* Strip whitespace */
+ if (sscanf(line, "%s", host) != 1)
+ continue;
+
+ if ((host[0] == 0) || (host[0] == '#'))
+ continue;
+
+ if (ping_host_add(ping, host) < 0)
+ {
+ const char *errmsg = ping_get_error (ping);
+
+ fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
+ continue;
+ }
+ }
+
+#if _POSIX_SAVED_IDS
+ /* Drop privileges */
+ status = seteuid (getuid ());
+ if (status != 0)
+ {
+ fprintf (stderr, "Temporarily dropping privileges "
+ "failed: %s\n", strerror (errno));
+ exit (EXIT_FAILURE);
+ }
+#endif
+
+ fclose(infile);
+ }
+
+#if _POSIX_SAVED_IDS
+ /* Regain privileges */
+ status = seteuid (saved_set_uid);
+ if (status != 0)
+ {
+ fprintf (stderr, "Temporarily re-gaining privileges "
+ "failed: %s\n", strerror (errno));
+ exit (EXIT_FAILURE);
+ }
+#endif
+
+ for (i = optind; i < argc; i++)
+ {
+ if (ping_host_add (ping, argv[i]) < 0)
+ {
+ const char *errmsg = ping_get_error (ping);
+
+ fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
+ continue;
+ }
}
+ /* Permanently drop root privileges if we're setuid-root. */
+ status = setuid (getuid ());
+ if (status != 0)
+ {
+ fprintf (stderr, "Dropping privileges failed: %s\n",
+ strerror (errno));
+ exit (EXIT_FAILURE);
+ }
+
+#if _POSIX_SAVED_IDS
+ saved_set_uid = (uid_t) -1;
+#endif
+
+ print_header (ping);
+
+ if (i == 0)
+ return (1);
+
memset (&sigint_action, '\0', sizeof (sigint_action));
sigint_action.sa_handler = sigint_handler;
if (sigaction (SIGINT, &sigint_action, NULL) < 0)
if (ping_send (ping) < 0)
{
- fprintf (stderr, "ping_send failed\n");
+ fprintf (stderr, "ping_send failed: %s\n",
+ ping_get_error (ping));
return (1);
}
opt_count--;
} /* while (opt_count != 0) */
- for (iter = ping_iterator_get (ping);
- iter != NULL;
- iter = ping_iterator_next (iter))
- {
- ping_context_t *context;
-
- context = ping_iterator_get_context (iter);
-
- printf ("\n--- %s ping statistics ---\n"
- "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
- context->host, context->req_sent, context->req_rcvd,
- 100.0 * (context->req_sent - context->req_rcvd) / ((double) context->req_sent),
- context->latency_total);
-
- if (context->req_rcvd != 0)
- {
- double num_total;
- double average;
- double deviation;
-
- num_total = (double) context->req_rcvd;
-
- average = context->latency_total / num_total;
- deviation = sqrt (((num_total * context->latency_total_square) - (context->latency_total * context->latency_total))
- / (num_total * (num_total - 1.0)));
-
- printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n",
- context->latency_min,
- average,
- context->latency_max,
- deviation);
- }
-
- ping_iterator_set_context (iter, NULL);
- free (context);
- }
+ print_footer (ping);
ping_destroy (ping);
return (0);
-}
+} /* }}} int main */
+
+/* vim: set fdm=marker : */
projects / liboping.git / blobdiff