135 lines
3.6 KiB
C
135 lines
3.6 KiB
C
/* Copyright (c) 2010-2013, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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/**
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* \file status.c
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* \brief Keep status information and log the heartbeat messages.
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**/
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#include "or.h"
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#include "config.h"
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#include "status.h"
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#include "nodelist.h"
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#include "relay.h"
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#include "router.h"
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#include "circuitlist.h"
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#include "main.h"
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#include "hibernate.h"
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#include "rephist.h"
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/** Return the total number of circuits. */
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static int
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count_circuits(void)
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{
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circuit_t *circ;
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int nr=0;
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for (circ = circuit_get_global_list_(); circ; circ = circ->next)
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nr++;
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return nr;
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}
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/** Take seconds <b>secs</b> and return a newly allocated human-readable
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* uptime string */
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static char *
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secs_to_uptime(long secs)
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{
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long int days = secs / 86400;
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int hours = (int)((secs - (days * 86400)) / 3600);
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int minutes = (int)((secs - (days * 86400) - (hours * 3600)) / 60);
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char *uptime_string = NULL;
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switch (days) {
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case 0:
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tor_asprintf(&uptime_string, "%d:%02d hours", hours, minutes);
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break;
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case 1:
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tor_asprintf(&uptime_string, "%ld day %d:%02d hours",
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days, hours, minutes);
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break;
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default:
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tor_asprintf(&uptime_string, "%ld days %d:%02d hours",
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days, hours, minutes);
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break;
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}
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return uptime_string;
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}
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/** Take <b>bytes</b> and returns a newly allocated human-readable usage
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* string. */
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static char *
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bytes_to_usage(uint64_t bytes)
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{
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char *bw_string = NULL;
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if (bytes < (1<<20)) { /* Less than a megabyte. */
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tor_asprintf(&bw_string, U64_FORMAT" kB", U64_PRINTF_ARG(bytes>>10));
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} else if (bytes < (1<<30)) { /* Megabytes. Let's add some precision. */
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double bw = U64_TO_DBL(bytes);
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tor_asprintf(&bw_string, "%.2f MB", bw/(1<<20));
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} else { /* Gigabytes. */
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double bw = U64_TO_DBL(bytes);
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tor_asprintf(&bw_string, "%.2f GB", bw/(1<<30));
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}
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return bw_string;
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}
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/** Log a "heartbeat" message describing Tor's status and history so that the
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* user can know that there is indeed a running Tor. Return 0 on success and
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* -1 on failure. */
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int
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log_heartbeat(time_t now)
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{
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char *bw_sent = NULL;
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char *bw_rcvd = NULL;
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char *uptime = NULL;
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const routerinfo_t *me;
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double r = tls_get_write_overhead_ratio();
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const int hibernating = we_are_hibernating();
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const or_options_t *options = get_options();
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(void)now;
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if (public_server_mode(options) && !hibernating) {
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/* Let's check if we are in the current cached consensus. */
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if (!(me = router_get_my_routerinfo()))
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return -1; /* Something stinks, we won't even attempt this. */
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else
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if (!node_get_by_id(me->cache_info.identity_digest))
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log_fn(LOG_NOTICE, LD_HEARTBEAT, "Heartbeat: It seems like we are not "
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"in the cached consensus.");
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}
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uptime = secs_to_uptime(get_uptime());
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bw_rcvd = bytes_to_usage(get_bytes_read());
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bw_sent = bytes_to_usage(get_bytes_written());
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log_fn(LOG_NOTICE, LD_HEARTBEAT, "Heartbeat: Tor's uptime is %s, with %d "
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"circuits open. I've sent %s and received %s.%s",
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uptime, count_circuits(),bw_sent,bw_rcvd,
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hibernating?" We are currently hibernating.":"");
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if (stats_n_data_cells_packaged && !hibernating)
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log_notice(LD_HEARTBEAT, "Average packaged cell fullness: %2.3f%%",
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100*(U64_TO_DBL(stats_n_data_bytes_packaged) /
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U64_TO_DBL(stats_n_data_cells_packaged*RELAY_PAYLOAD_SIZE)) );
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if (r > 1.0) {
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double overhead = ( r - 1.0 ) * 100.0;
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log_notice(LD_HEARTBEAT, "TLS write overhead: %.f%%", overhead);
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}
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if (public_server_mode(options))
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rep_hist_log_circuit_handshake_stats(now);
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tor_free(uptime);
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tor_free(bw_sent);
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tor_free(bw_rcvd);
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return 0;
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}
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