tfc_signal.c

   1 /*
   2  * tfcrypt -- high security Threefish encryption tool.
   3  *
   4  * tfcrypt is copyrighted:
   5  * Copyright (C) 2012-2019 Andrey Rys. All rights reserved.
   6  *
   7  * tfcrypt is licensed to you under the terms of std. MIT/X11 license:
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining
  10  * a copy of this software and associated documentation files (the
  11  * "Software"), to deal in the Software without restriction, including
  12  * without limitation the rights to use, copy, modify, merge, publish,
  13  * distribute, sublicense, and/or sell copies of the Software, and to
  14  * permit persons to whom the Software is furnished to do so, subject to
  15  * the following conditions:
  16  *
  17  * The above copyright notice and this permission notice shall be
  18  * included in all copies or substantial portions of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  23  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  24  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  25  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  26  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27  */
  28
  29 #include "tfcrypt.h"
  30
  31 void exit_sigterm(int signal)
  32 {
  33         xexit(0);
  34 }
  35
  36 void print_crypt_status(int signal)
  37 {
  38         tfc_fsize wr_speed;
  39         double seconds, human_totalproc_src, human_totalproc_dst, human_wr_speed;
  40         int src_scale_idx, dst_scale_idx, wr_speed_scale;
  41         const char *oper_mode, *inplace;
  42         static tfc_yesno last;
  43
  44         if (last == YES) return;
  45         if (signal == 0 || signal == -1) last = YES;
  46
  47         switch (do_edcrypt) {
  48                 case TFC_DO_ENCRYPT: oper_mode = "encrypted"; break;
  49                 case TFC_DO_DECRYPT: oper_mode = "decrypted"; break;
  50                 default:
  51                         if (ctr_mode == TFC_MODE_PLAIN) oper_mode = "written";
  52                         else if (ctr_mode == TFC_MODE_SKSUM) oper_mode = "hashed";
  53                         else oper_mode = NULL;
  54                         break;
  55         }
  56
  57         if (signal == SIGINT || signal == SIGTERM) {
  58                 do_stop = YES;
  59         }
  60
  61         tfc_getcurtime(&current_time);
  62         total_time += (current_time - delta_time);
  63         seconds = TFC_UTODSECS(current_time - delta_time);
  64         wr_speed = delta_processed / seconds;
  65         tfc_describescale(total_processed_src, &human_totalproc_src, &src_scale_idx);
  66         tfc_describescale(total_processed_dst, &human_totalproc_dst, &dst_scale_idx);
  67         tfc_describescale(wr_speed, &human_wr_speed, &wr_speed_scale);
  68
  69         if (bench_timer) {
  70                 tfc_say("done!");
  71                 tfc_say("%s %s benchmark results:", progname, tfc_modename(ctr_mode));
  72                 tfc_nfsay(stdout, "%s %llu (%.2f%s) bytes, "
  73                         "avg. speed %llu (%.2f%s) B/s, time %.4fs.",
  74                         oper_mode,
  75                         total_processed_src, human_totalproc_src, tfc_getscale(src_scale_idx),
  76                         wr_speed, human_wr_speed, tfc_getscale(wr_speed_scale),
  77                         TFC_UTODSECS(current_time - delta_time));
  78                 tfc_esay("\n");
  79                 xexit(0);
  80         }
  81
  82         if (do_statline_dynamic == YES) inplace = "\033[2K\r";
  83         else inplace = "";
  84
  85         if (do_less_stats == YES) {
  86                 tfc_nfsay(stderr, "%s%s:"
  87                         " %s %.2f%s,"
  88                         " %.2f%s B/s @%s",
  89                         inplace, progname,
  90                         oper_mode,
  91                         human_totalproc_dst, tfc_getscale(dst_scale_idx),
  92                         human_wr_speed, tfc_getscale(wr_speed_scale), tfc_format_time(total_time));
  93         }
  94         else {
  95                 if (ctr_mode <= TFC_MODE_PLAIN) tfc_nfsay(stderr, "%s%s: read: %llu (%.2f%s),"
  96                         " %s %llu (%.2f%s) bytes,"
  97                         " (%llu (%.2f%s) B/s), time %s",
  98                         inplace, progname,
  99                         total_processed_src, human_totalproc_src, tfc_getscale(src_scale_idx),
 100                         oper_mode,
 101                         total_processed_dst, human_totalproc_dst, tfc_getscale(dst_scale_idx),
 102                         wr_speed, human_wr_speed, tfc_getscale(wr_speed_scale), tfc_format_time(total_time));
 103                 else tfc_nfsay(stderr, "%s%s: read: %llu (%.2f%s),"
 104                         " %s %s %llu (%.2f%s) bytes,"
 105                         " (%llu (%.2f%s) B/s), time %s",
 106                         inplace, progname,
 107                         total_processed_src, human_totalproc_src, tfc_getscale(src_scale_idx),
 108                         tfc_modename(ctr_mode), oper_mode,
 109                         total_processed_dst, human_totalproc_dst, tfc_getscale(dst_scale_idx),
 110                         wr_speed, human_wr_speed, tfc_getscale(wr_speed_scale), tfc_format_time(total_time));
 111         }
 112
 113         if (do_stop == NO && do_statline_dynamic == NO) tfc_esay("\n");
 114         if (last) tfc_esay("\n");
 115         statline_was_shown = YES;
 116
 117         if ((signal == SIGINT || signal == SIGTERM) && do_stop == YES) {
 118                 tfc_esay("\n");
 119                 exit_sigterm(signal);
 120         }
 121
 122         delta_processed = 0;
 123         tfc_getcurtime(&delta_time);
 124
 125         if (signal == SIGTSTP) kill(getpid(), SIGSTOP);
 126
 127         if (status_timer) setup_next_alarm(status_timer);
 128 }
 129
 130 void change_status_width(int signal)
 131 {
 132         if (do_less_stats == YES) do_less_stats = NO;
 133         else if (do_less_stats == NO) do_less_stats = YES;
 134 }
 135
 136 void change_status_timer(int signal)
 137 {
 138         static tfc_useconds reset_timer;
 139         tfc_useconds t;
 140
 141         tfc_getcurtime(&t);
 142         if (reset_timer && (t - reset_timer) < TFC_DTOUSECS(0.1)) status_timer = 0;
 143         reset_timer = t;
 144
 145         if (status_timer == 0) status_timer = TFC_DTOUSECS(0.25);
 146         else status_timer *= 2;
 147
 148         if (verbose) tfc_esay("%s: status timer was changed to %.2fs",
 149                 progname, TFC_UTODSECS(status_timer));
 150         setup_next_alarm(status_timer);
 151 }
 152
 153 void setup_next_alarm(tfc_useconds useconds)
 154 {
 155         struct itimerval it;
 156
 157         memset(&it, 0, sizeof(struct itimerval));
 158         it.it_value.tv_sec = useconds / 1000000;
 159         it.it_value.tv_usec = useconds % 1000000;
 160         setitimer(ITIMER_REAL, &it, NULL);
 161 }