Code

Allow adding a new host after noping has started
[liboping.git] / src / oping.c
index a74cd420a8e5567a5907d6faca5db76e4ff4067c..d0e9f3344134dd0b01d0ea0ecef1cdb5e5e02ed8 100644 (file)
@@ -1,6 +1,6 @@
 /**
  * Object oriented C module to send ICMP and ICMPv6 `echo's.
- * Copyright (C) 2006-2014  Florian octo Forster <ff at octo.it>
+ * Copyright (C) 2006-2016  Florian octo Forster <ff at octo.it>
  *
  * 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
@@ -192,9 +192,11 @@ typedef struct ping_context
 } ping_context_t;
 
 static double  opt_interval   = 1.0;
+static double  opt_timeout    = PING_DEF_TIMEOUT;
 static int     opt_addrfamily = PING_DEF_AF;
 static char   *opt_srcaddr    = NULL;
 static char   *opt_device     = NULL;
+static char   *opt_mark       = NULL;
 static char   *opt_filename   = NULL;
 static int     opt_count      = -1;
 static int     opt_send_ttl   = 64;
@@ -206,8 +208,11 @@ static double  opt_exit_status_threshold = 1.0;
 static int     opt_show_graph = 1;
 static int     opt_utf8       = 0;
 #endif
+static char   *opt_outfile    = NULL;
+static int     opt_bell       = 0;
 
-static int host_num = 0;
+static int host_num  = 0;
+static FILE *outfile = NULL;
 
 #if USE_NCURSES
 static WINDOW *main_win = NULL;
@@ -288,6 +293,11 @@ static void clean_history (ping_context_t *ctx) /* {{{ */
        memcpy (ctx->history_by_value, ctx->history_by_time,
                        sizeof (ctx->history_by_time));
 
+        /* Remove impossible values caused by adding a new host */
+       for (i = 0; i < ctx->history_size; i++)
+                if (ctx->history_by_value[i]<0)
+                        ctx->history_by_value[i]=NAN;
+
        /* Sort all RTTs. */
        qsort (ctx->history_by_value, ctx->history_size, sizeof
                        (ctx->history_by_value[0]), compare_double);
@@ -392,6 +402,7 @@ static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
 {
        pingobj_iter_t *iter;
        int index;
+        size_t history_size = 0;
 
        if (ping == NULL)
                return (EINVAL);
@@ -404,9 +415,25 @@ static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
                ping_context_t *context;
                size_t buffer_size;
 
+                context = ping_iterator_get_context(iter);
+
+                /* if this is a previously existing host, do not recreate it */
+                if (context != NULL) {
+                    history_size = context->history_size;
+                    context->index = index++;
+                    continue;
+                }
+
                context = context_create ();
                context->index = index;
 
+                /* start new hosts at the same graph point as old hosts */
+                context->history_size = history_size;
+                context->history_index = history_size;
+                for (int i = 0; i<history_size; i++) {
+                    context->history_by_time[i] = -1;
+                }
+
                buffer_size = sizeof (context->host);
                ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
 
@@ -430,12 +457,15 @@ static void usage_exit (const char *name, int status) /* {{{ */
                        "  -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"
+                       "  -w timeout   time to wait for replies, in seconds\n"
                        "  -t ttl       time to live for each ICMP packet\n"
                        "  -Q qos       Quality of Service (QoS) of outgoing packets\n"
                        "               Use \"-Q help\" for a list of valid options.\n"
                        "  -I srcaddr   source address\n"
                        "  -D device    outgoing interface name\n"
-                       "  -f filename  filename to read hosts from\n"
+                       "  -m mark      mark to set on outgoing packets\n"
+                       "  -f filename  read hosts from <filename>\n"
+                       "  -O filename  write RTT measurements to <filename>\n"
 #if USE_NCURSES
                        "  -u / -U      force / disable UTF-8 output\n"
                        "  -g graph     graph type to draw\n"
@@ -444,8 +474,8 @@ static void usage_exit (const char *name, int status) /* {{{ */
                        "  -Z percent   Exit with non-zero exit status if more than this percentage of\n"
                        "               probes timed out. (default: never)\n"
 
-                       "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
-                       "by Florian octo Forster <octo@verplant.org>\n"
+                       "\noping "PACKAGE_VERSION", http://noping.cc/\n"
+                       "by Florian octo Forster <ff@octo.it>\n"
                        "for contributions see `AUTHORS'\n",
                        name);
        exit (status);
@@ -645,7 +675,7 @@ static int read_options (int argc, char **argv) /* {{{ */
 
        while (1)
        {
-               optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:P:"
+               optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:O:P:m:w:b"
 #if USE_NCURSES
                                "uUg:"
 #endif
@@ -698,6 +728,18 @@ static int read_options (int argc, char **argv) /* {{{ */
                                }
                                break;
 
+                       case 'w':
+                               {
+                                       char *endp = NULL;
+                                       double t = strtod (optarg, &endp);
+                                       if ((optarg[0] != 0) && (endp != NULL) && (*endp == 0))
+                                               opt_timeout = t;
+                                       else
+                                               fprintf (stderr, "Ignoring invalid timeout: %s\n",
+                                                               optarg);
+                               }
+                               break;
+
                        case 'I':
                                {
                                        if (opt_srcaddr != NULL)
@@ -710,6 +752,10 @@ static int read_options (int argc, char **argv) /* {{{ */
                                opt_device = optarg;
                                break;
 
+                       case 'm':
+                               opt_mark = optarg;
+                               break;
+
                        case 't':
                        {
                                int new_send_ttl;
@@ -726,6 +772,13 @@ static int read_options (int argc, char **argv) /* {{{ */
                                set_opt_send_qos (optarg);
                                break;
 
+                       case 'O':
+                               {
+                                       free (opt_outfile);
+                                       opt_outfile = strdup (optarg);
+                               }
+                               break;
+
                        case 'P':
                                {
                                        double new_percentile;
@@ -761,6 +814,9 @@ static int read_options (int argc, char **argv) /* {{{ */
                                opt_utf8 = 1;
                                break;
 #endif
+                       case 'b':
+                               opt_bell = 1;
+                               break;
 
                        case 'Z':
                        {
@@ -965,7 +1021,7 @@ static int update_graph_boxplot (ping_context_t *ctx) /* {{{ */
 } /* }}} int update_graph_boxplot */
 
 static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
-               double latency, unsigned int sequence)
+               double latency)
 {
        size_t x;
        size_t x_max;
@@ -979,12 +1035,19 @@ static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
        /* Determine the first index in the history we need to draw
         * the graph. */
        history_offset = 0;
-       if (((size_t) x_max) < ctx->history_size)
+       if (((size_t) x_max) < ctx->history_size) /* window is smaller than history */
        {
                if (ctx->history_index > x_max)
                        history_offset = ctx->history_index - x_max;
                else /* wrap around */
-                       history_offset = ctx->history_index + x_max - ctx->history_size;
+                       history_offset = ctx->history_index + ctx->history_size - x_max;
+       }
+       else /* window is larger than history */
+       {
+               if (ctx->history_index != ctx->history_size) /* no longer growing. */
+                       history_offset = ctx->history_index;
+               else /* start-up */
+                       history_offset = 0;
        }
 
        for (x = 0; x < x_max; x++)
@@ -1005,6 +1068,10 @@ static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
                index = (history_offset + x) % ctx->history_size;
                latency = ctx->history_by_time[index];
 
+                if (latency < 0) {
+                        continue;
+                }
+
                if (latency >= 0.0)
                {
                        double ratio;
@@ -1176,12 +1243,6 @@ static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter)
        ping_iterator_get_info (iter, PING_INFO_LATENCY,
                        &latency, &buffer_len);
 
-       unsigned int sequence = 0;
-       buffer_len = sizeof (sequence);
-       ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
-                       &sequence, &buffer_len);
-
-
        if ((ctx == NULL) || (ctx->window == NULL))
                return (EINVAL);
 
@@ -1212,12 +1273,12 @@ static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter)
                percentile = percentile_to_latency (ctx, opt_percentile);
 
                mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
-                               "RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f",
+                               "RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f  ",
                                min, median, opt_percentile, percentile, max);
        }
 
        if (opt_show_graph == 1)
-               update_graph_prettyping (ctx, latency, sequence);
+               update_graph_prettyping (ctx, latency);
        else if (opt_show_graph == 2)
                update_graph_histogram (ctx);
        else if (opt_show_graph == 3)
@@ -1291,6 +1352,34 @@ static int check_resize (pingobj_t *ping) /* {{{ */
                        else if (opt_show_graph > 0)
                                opt_show_graph++;
                }
+                else if (key == 'a')
+                {
+                        char host[80];
+
+                        wprintw(main_win, "New Host: ");
+                        echo();
+                        wgetnstr(main_win, host, sizeof(host));
+                        noecho();
+
+                       if (ping_host_add(ping, host) < 0)
+                       {
+                               const char *errmsg = ping_get_error (ping);
+
+                               wprintw (main_win, "Adding host `%s' failed: %s\n", host, errmsg);
+                       }
+                       else
+                       {
+                                int box_height = (opt_show_graph == 0) ? 4 : 5;
+
+                                /* make sure old data is still visible */
+                                for (int i = 0; i<box_height; i++)
+                                    wprintw (main_win, "\n");
+
+                                need_resize = 1;
+                               host_num++;
+                                ping_initialize_contexts(ping);
+                       }
+                }
        }
 
        if (need_resize)
@@ -1539,6 +1628,13 @@ static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
 #if USE_NCURSES
                }
 #endif
+                if (opt_bell) {
+#if USE_NCURSES
+                       beep();
+#else
+                       HOST_PRINTF ("\a");
+#endif
+                }
        }
        else /* if (!(latency > 0.0)) */
        {
@@ -1564,6 +1660,21 @@ static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
 #endif
        }
 
+       if (outfile != NULL)
+       {
+               struct timespec ts = { 0, 0 };
+
+               if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
+               {
+                       double t = ((double) ts.tv_sec) + (((double) ts.tv_nsec) / 1000000000.0);
+
+                       if ((sequence % 32) == 0)
+                               fprintf (outfile, "#time,host,latency[ms]\n");
+
+                       fprintf (outfile, "%.3f,\"%s\",%.2f\n", t, context->host, latency);
+               }
+       }
+
 #if USE_NCURSES
        update_stats_from_context (context, iter);
        wrefresh (main_win);
@@ -1657,7 +1768,7 @@ int main (int argc, char **argv) /* {{{ */
        }
 #endif
 
-        setlocale(LC_ALL, "");
+       setlocale(LC_ALL, "");
        optind = read_options (argc, argv);
 
 #if !_POSIX_SAVED_IDS
@@ -1708,6 +1819,12 @@ int main (int argc, char **argv) /* {{{ */
                /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
        }
 
+       if (ping_setopt (ping, PING_OPT_TIMEOUT, (void*)(&opt_timeout)) != 0)
+       {
+               fprintf (stderr, "Setting timeout failed: %s\n",
+                               ping_get_error (ping));
+       }
+
        if (opt_addrfamily != PING_DEF_AF)
                ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
 
@@ -1729,6 +1846,24 @@ int main (int argc, char **argv) /* {{{ */
                }
        }
 
+       if (opt_mark != NULL)
+       {
+               char *endp = NULL;
+               int mark = (int) strtol (opt_mark, &endp, /* base = */ 0);
+               if ((opt_mark[0] != 0) && (endp != NULL) && (*endp == 0))
+               {
+                       if (ping_setopt(ping, PING_OPT_MARK, (void*)(&mark)) != 0)
+                       {
+                               fprintf (stderr, "Setting mark failed: %s\n",
+                                       ping_get_error (ping));
+                       }
+               }
+               else
+               {
+                       fprintf(stderr, "Ignoring invalid mark: %s\n", optarg);
+               }
+       }
+
        if (opt_filename != NULL)
        {
                FILE *infile;
@@ -1839,6 +1974,17 @@ int main (int argc, char **argv) /* {{{ */
        saved_set_uid = (uid_t) -1;
 #endif
 
+       if (opt_outfile != NULL)
+       {
+               outfile = fopen (opt_outfile, "a");
+               if (outfile == NULL)
+               {
+                       fprintf (stderr, "opening \"%s\" failed: %s\n",
+                                opt_outfile, strerror (errno));
+                       exit (EXIT_FAILURE);
+               }
+       }
+
        ping_initialize_contexts (ping);
 
        if (i == 0)
@@ -1925,6 +2071,12 @@ int main (int argc, char **argv) /* {{{ */
 
        ping_destroy (ping);
 
+       if (outfile != NULL)
+       {
+               fclose (outfile);
+               outfile = NULL;
+       }
+
        if (status == 0)
                exit (EXIT_SUCCESS);
        else