X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Foping.c;h=78f053f31e4f3e8568ff32e18c22caa3731cce62;hb=21a27ab171f36612cb5249d5aa04584ce12a2624;hp=37f64b27a76831980bb60ddb48e2fc4b8c95301e;hpb=d2e133810968cd0d8f96ff538803d1579f524d36;p=liboping.git diff --git a/src/oping.c b/src/oping.c index 37f64b2..78f053f 100644 --- a/src/oping.c +++ b/src/oping.c @@ -1,11 +1,11 @@ /** * Object oriented C module to send ICMP and ICMPv6 `echo's. - * Copyright (C) 2006 Florian octo Forster + * Copyright (C) 2006-2010 Florian octo Forster * * 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 @@ -25,12 +25,18 @@ # include # include # include +# include +# include # include # include #else # error "You don't have the standard C99 header files installed" #endif /* STDC_HEADERS */ +#if HAVE_UNISTD_H +# include +#endif + #if HAVE_MATH_H # include #endif @@ -46,6 +52,16 @@ # endif #endif +#if HAVE_SYS_SOCKET_H +# include +#endif +#if HAVE_NETINET_IN_H +# include +#endif +#if HAVE_NETINET_IP_H +# include +#endif + #if HAVE_NETDB_H # include /* NI_MAXHOST */ #endif @@ -54,33 +70,68 @@ # include #endif +#if HAVE_SYS_TYPES_H +#include +#endif + +#if USE_NCURSES +# define NCURSES_OPAQUE 1 +# include + +# define OPING_GREEN 1 +# define OPING_YELLOW 2 +# define OPING_RED 3 +#endif + #include "oping.h" +#ifndef _POSIX_SAVED_IDS +# define _POSIX_SAVED_IDS 0 +#endif + typedef struct ping_context { char host[NI_MAXHOST]; char addr[NI_MAXHOST]; + int index; 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; +static uint8_t opt_send_tos = 0; + +static int host_num = 0; -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; -} +} /* }}} void sigint_handler */ -ping_context_t *context_create (void) +static ping_context_t *context_create (void) /* {{{ */ { ping_context_t *ret; @@ -94,28 +145,194 @@ ping_context_t *context_create (void) ret->latency_total = 0.0; ret->latency_total_square = 0.0; +#if USE_NCURSES + ret->window = NULL; +#endif + return (ret); -} +} /* }}} ping_context_t *context_create */ -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 context_destroy */ -void usage_exit (const char *name) +static double context_get_average (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); + + 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) /* {{{ */ +{ + 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 double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */ +{ + if (ctx == NULL) + return (-1.0); + + if (ctx->req_sent < 1) + return (0.0); + + return (100.0 * (ctx->req_sent - ctx->req_rcvd) + / ((double) ctx->req_sent)); +} /* }}} double context_get_packet_loss */ + +static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */ +{ + pingobj_iter_t *iter; + int index; + + if (ping == NULL) + return (EINVAL); + + index = 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 (); + context->index = index; + + 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); + + ping_iterator_set_context (iter, (void *) context); + + index++; + } + + return (0); +} /* }}} int ping_initialize_contexts */ + +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" + " -z tos Type-of-service/class-of-service 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 \n" + "for contributions see `AUTHORS'\n", name); - exit (1); -} + exit (status); +} /* }}} void usage_exit */ + +static void usage_tos_exit (const char *arg, int status) /* {{{ */ +{ + if (arg != 0) + fprintf (stderr, "Invalid ToS argument: \"%s\"\n\n", arg); + + fprintf (stderr, "Valid ToS arguments (option \"-z\") are:\n" + "\n" + " lowdelay (%#04x) minimize delays\n" + " throughput (%#04x) optimize throughput\n" + " reliability (%#04x) optimize reliability\n" + " mincost (%#04x) minimize cost\n" + " 0x00 - 0xff specify manually\n" + "\n", + (unsigned int) IPTOS_LOWDELAY, + (unsigned int) IPTOS_THROUGHPUT, + (unsigned int) IPTOS_RELIABILITY, + (unsigned int) IPTOS_MINCOST); + + exit (status); +} /* }}} void usage_tos_exit */ + +static int set_opt_send_tos (const char *opt) /* {{{ */ +{ + if (opt == NULL) + return (EINVAL); + + if (strcasecmp ("lowdelay", opt) == 0) + opt_send_tos = IPTOS_LOWDELAY; + else if (strcasecmp ("throughput", opt) == 0) + opt_send_tos = IPTOS_THROUGHPUT; + else if (strcasecmp ("reliability", opt) == 0) + opt_send_tos = IPTOS_RELIABILITY; + else if (strcasecmp ("mincost", opt) == 0) + opt_send_tos = IPTOS_MINCOST; + else if (strcasecmp ("help", opt) == 0) + usage_tos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS); + else + { + unsigned long value; + char *endptr; + + errno = 0; + endptr = NULL; + value = strtoul (opt, &endptr, /* base = */ 0); + if ((errno != 0) || (endptr == opt) + || (endptr == NULL) || (*endptr != 0) + || (value >= 0xff)) + usage_tos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE); + + opt_send_tos = (uint8_t) value; + } + + return (0); +} /* }}} int set_opt_send_tos */ -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:z:f:D:"); if (optchar == -1) break; @@ -133,6 +350,17 @@ int read_options (int argc, char **argv) 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; @@ -140,62 +368,53 @@ int read_options (int argc, char **argv) { 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 'z': + set_opt_send_tos (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) -{ - double latency; - uint16_t sequence; - size_t buffer_len; - ping_context_t *context; - - buffer_len = sizeof (latency); - ping_iterator_get_info (iter, PING_INFO_LATENCY, - &latency, &buffer_len); - - buffer_len = sizeof (sequence); - ping_iterator_get_info (iter, PING_INFO_SEQUENCE, - &sequence, &buffer_len); - - context = (ping_context_t *) ping_iterator_get_context (iter); - - context->req_sent++; - if (latency > 0.0) - { - context->req_rcvd++; - context->latency_total += latency; - context->latency_total_square += (latency * latency); - - if ((context->latency_max < 0.0) || (context->latency_max < latency)) - context->latency_max = latency; - if ((context->latency_min < 0.0) || (context->latency_min > latency)) - context->latency_min = latency; +} /* }}} read_options */ - printf ("echo reply from %s (%s): icmp_seq=%u time=%.2f ms\n", - context->host, context->addr, - (unsigned int) sequence, latency); - } - else - { - printf ("echo reply from %s (%s): icmp_seq=%u timeout\n", - context->host, context->addr, - (unsigned int) sequence); - } -} - -void time_normalize (struct timespec *ts) +static void time_normalize (struct timespec *ts) /* {{{ */ { while (ts->tv_nsec < 0) { @@ -214,9 +433,9 @@ void time_normalize (struct timespec *ts) ts->tv_sec += 1; ts->tv_nsec -= 1000000000; } -} +} /* }}} void time_normalize */ -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) @@ -240,9 +459,396 @@ void time_calc (struct timespec *ts_dest, 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 */ + +#if USE_NCURSES +static int update_stats_from_context (ping_context_t *ctx) /* {{{ */ +{ + if ((ctx == NULL) || (ctx->window == NULL)) + return (EINVAL); + + werase (ctx->window); + + box (ctx->window, 0, 0); + wattron (ctx->window, A_BOLD); + mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5, + " %s ", ctx->host); + wattroff (ctx->window, A_BOLD); + wprintw (ctx->window, "ping statistics "); + mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2, + "%i packets transmitted, %i received, %.2f%% packet " + "loss, time %.1fms", + ctx->req_sent, ctx->req_rcvd, + context_get_packet_loss (ctx), + ctx->latency_total); + if (ctx->req_rcvd != 0) + { + double average; + double deviation; + + average = context_get_average (ctx); + deviation = context_get_stddev (ctx); + + mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2, + "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms", + ctx->latency_min, + average, + ctx->latency_max, + deviation); + } + + wrefresh (ctx->window); + + return (0); +} /* }}} int update_stats_from_context */ + +static int on_resize (pingobj_t *ping) /* {{{ */ +{ + pingobj_iter_t *iter; + int width = 0; + int height = 0; + int main_win_height; + + getmaxyx (stdscr, height, width); + if ((height < 1) || (width < 1)) + return (EINVAL); + + main_win_height = height - (4 * host_num); + wresize (main_win, main_win_height, /* width = */ width); + /* Allow scrolling */ + scrollok (main_win, TRUE); + /* wsetscrreg (main_win, 0, main_win_height - 1); */ + /* Allow hardware accelerated scrolling. */ + idlok (main_win, TRUE); + wrefresh (main_win); + + for (iter = ping_iterator_get (ping); + iter != NULL; + iter = ping_iterator_next (iter)) + { + ping_context_t *context; + + context = ping_iterator_get_context (iter); + if (context == NULL) + continue; + + if (context->window != NULL) + { + delwin (context->window); + context->window = NULL; + } + context->window = newwin (/* height = */ 4, + /* width = */ 0, + /* y = */ main_win_height + (4 * context->index), + /* x = */ 0); + } + + return (0); +} /* }}} */ + +static int check_resize (pingobj_t *ping) /* {{{ */ +{ + int need_resize = 0; + + while (42) + { + int key = wgetch (stdscr); + if (key == ERR) + break; + else if (key == KEY_RESIZE) + need_resize = 1; + } + + if (need_resize) + return (on_resize (ping)); + else + return (0); +} /* }}} int check_resize */ + +static int pre_loop_hook (pingobj_t *ping) /* {{{ */ +{ + pingobj_iter_t *iter; + int width = 0; + int height = 0; + int main_win_height; + + initscr (); + cbreak (); + noecho (); + nodelay (stdscr, TRUE); + + getmaxyx (stdscr, height, width); + if ((height < 1) || (width < 1)) + return (EINVAL); + + if (has_colors () == TRUE) + { + start_color (); + init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0); + init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0); + init_pair (OPING_RED, COLOR_RED, /* default = */ 0); + } + + main_win_height = height - (4 * host_num); + main_win = newwin (/* height = */ main_win_height, + /* width = */ 0, + /* y = */ 0, /* x = */ 0); + /* Allow scrolling */ + scrollok (main_win, TRUE); + /* wsetscrreg (main_win, 0, main_win_height - 1); */ + /* Allow hardware accelerated scrolling. */ + idlok (main_win, TRUE); + wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0); + wrefresh (main_win); + + for (iter = ping_iterator_get (ping); + iter != NULL; + iter = ping_iterator_next (iter)) + { + ping_context_t *context; + + context = ping_iterator_get_context (iter); + if (context == NULL) + continue; + + if (context->window != NULL) + { + delwin (context->window); + context->window = NULL; + } + context->window = newwin (/* height = */ 4, + /* width = */ 0, + /* y = */ main_win_height + (4 * context->index), + /* x = */ 0); + } + + + /* Don't know what good this does exactly, but without this code + * "check_resize" will be called right after startup and *somehow* + * this leads to display errors. If we purge all initial characters + * here, the problem goes away. "wgetch" is non-blocking due to + * "nodelay" (see above). */ + while (wgetch (stdscr) != ERR) + { + /* eat up characters */; + } + + return (0); +} /* }}} int pre_loop_hook */ + +static int pre_sleep_hook (pingobj_t *ping) /* {{{ */ +{ + return (check_resize (ping)); +} /* }}} int pre_sleep_hook */ + +static int post_sleep_hook (pingobj_t *ping) /* {{{ */ +{ + return (check_resize (ping)); +} /* }}} int pre_sleep_hook */ +#else /* if !USE_NCURSES */ +static int pre_loop_hook (pingobj_t *ping) /* {{{ */ +{ + pingobj_iter_t *iter; + + for (iter = ping_iterator_get (ping); + iter != NULL; + iter = ping_iterator_next (iter)) + { + ping_context_t *ctx; + size_t buffer_size; + + ctx = ping_iterator_get_context (iter); + if (ctx == NULL) + continue; + + buffer_size = 0; + ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size); + + printf ("PING %s (%s) %zu bytes of data.\n", + ctx->host, ctx->addr, buffer_size); + } + + return (0); +} /* }}} int pre_loop_hook */ + +static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */ +{ + fflush (stdout); + + return (0); +} /* }}} int pre_sleep_hook */ + +static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */ +{ + return (0); +} /* }}} int post_sleep_hook */ +#endif -int main (int argc, char **argv) +static void update_host_hook (pingobj_iter_t *iter, /* {{{ */ + int index) +{ + double latency; + unsigned int sequence; + int recv_ttl; + uint8_t recv_tos; + 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); + + recv_tos = 0; + buffer_len = sizeof (recv_tos); + ping_iterator_get_info (iter, PING_INFO_RECV_TOS, + &recv_tos, &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) + { + context->req_rcvd++; + context->latency_total += latency; + context->latency_total_square += (latency * latency); + + if ((context->latency_max < 0.0) || (context->latency_max < latency)) + context->latency_max = latency; + if ((context->latency_min < 0.0) || (context->latency_min > latency)) + context->latency_min = latency; + +#if USE_NCURSES + if (has_colors () == TRUE) + { + int color = OPING_GREEN; + double average = context_get_average (context); + double stddev = context_get_stddev (context); + + if ((latency < (average - (2 * stddev))) + || (latency > (average + (2 * stddev)))) + color = OPING_RED; + else if ((latency < (average - stddev)) + || (latency > (average + stddev))) + color = OPING_YELLOW; + + HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i tos=0x%02"PRIx8 + " time=", + data_len, context->host, context->addr, + sequence, recv_ttl, recv_tos); + wattron (main_win, COLOR_PAIR(color)); + HOST_PRINTF ("%.2f", latency); + wattroff (main_win, COLOR_PAIR(color)); + HOST_PRINTF (" ms\n"); + } + else + { +#endif + HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i tos=0x%02"PRIx8 + " time=%.2f ms\n", + data_len, + context->host, context->addr, + sequence, recv_ttl, recv_tos, latency); +#if USE_NCURSES + } +#endif + } + else + { +#if USE_NCURSES + if (has_colors () == TRUE) + { + HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ", + context->host, context->addr, + sequence); + wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD); + HOST_PRINTF ("timeout"); + wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD); + HOST_PRINTF ("\n"); + } + else + { +#endif + HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n", + context->host, context->addr, + sequence); +#if USE_NCURSES + } +#endif + } + +#if USE_NCURSES + update_stats_from_context (context); + wrefresh (main_win); +#endif +} /* }}} void update_host_hook */ + +static int post_loop_hook (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, + context_get_packet_loss (context), + context->latency_total); + + if (context->req_rcvd != 0) + { + double average; + double deviation; + + average = context_get_average (context); + deviation = context_get_stddev (context); + + 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 post_loop_hook */ + +int main (int argc, char **argv) /* {{{ */ { pingobj_t *ping; pingobj_iter_t *iter; @@ -256,16 +862,42 @@ int main (int argc, char **argv) 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) @@ -274,6 +906,18 @@ int main (int argc, char **argv) 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)); + } + + if (ping_setopt (ping, PING_OPT_TOS, &opt_send_tos) != 0) + { + fprintf (stderr, "Setting TOS to %i failed: %s\n", + opt_send_tos, ping_get_error (ping)); + } + { double temp_sec; double temp_nsec; @@ -288,32 +932,135 @@ int main (int argc, char **argv) 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; + } + else + { + host_num++; + } + } + +#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; + } + else + { + host_num++; + } + } + + /* 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 + + ping_initialize_contexts (ping); + + if (i == 0) + return (1); memset (&sigint_action, '\0', sizeof (sigint_action)); sigint_action.sa_handler = sigint_handler; @@ -323,8 +1070,11 @@ int main (int argc, char **argv) return (1); } + pre_loop_hook (ping); + while (opt_count != 0) { + int index; int status; if (gettimeofday (&tv_begin, NULL) < 0) @@ -335,17 +1085,21 @@ int main (int argc, char **argv) if (ping_send (ping) < 0) { - fprintf (stderr, "ping_send failed\n"); + fprintf (stderr, "ping_send failed: %s\n", + ping_get_error (ping)); return (1); } + index = 0; for (iter = ping_iterator_get (ping); iter != NULL; iter = ping_iterator_next (iter)) { - print_host (iter); + update_host_hook (iter, index); + index++; } - fflush (stdout); + + pre_sleep_hook (ping); /* Don't sleep in the last iteration */ if (opt_count == 1) @@ -374,47 +1128,17 @@ int main (int argc, char **argv) } } + post_sleep_hook (ping); + if (opt_count > 0) 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 (context->latency_total_square - (num_total * average * average)); - - 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); - } + post_loop_hook (ping); ping_destroy (ping); return (0); -} +} /* }}} int main */ + +/* vim: set fdm=marker : */