tfc_signal.c

   1 /*
   2  * tfcrypt -- high security Threefish encryption tool.
   3  *
   4  * tfcrypt is copyrighted:
   5  * Copyright (C) 2012-2018 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, was_sigint;
  43
  44         if (last == YES) return;
  45         if (signal == 0) 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                 if (signal == SIGINT) was_sigint = YES;
  59                 if (do_stop == TFC_STOP_FULL) xexit(0);
  60                 do_stop = TFC_STOP_FULL;
  61                 status_timer = 0;
  62                 verbose = NO;
  63                 if (bench_timer) goto _out;
  64                 return;
  65         }
  66
  67 _out:   tfc_getcurtime(&current_time);
  68         seconds = TFC_UTODSECS(current_time - delta_time);
  69         wr_speed = delta_processed / seconds;
  70         tfc_describescale(total_processed_src, &human_totalproc_src, &src_scale_idx);
  71         tfc_describescale(total_processed_dst, &human_totalproc_dst, &dst_scale_idx);
  72         tfc_describescale(wr_speed, &human_wr_speed, &wr_speed_scale);
  73
  74         if (bench_timer) {
  75                 tfc_say("done!");
  76                 tfc_say("%s %s benchmark results:", progname, tfc_modename(ctr_mode));
  77                 tfc_nfsay(stdout, "%s %llu (%.2f%s) bytes, "
  78                         "avg. speed %llu (%.2f%s) B/s, time %.4fs.",
  79                         oper_mode,
  80                         total_processed_src, human_totalproc_src, tfc_getscale(src_scale_idx),
  81                         wr_speed, human_wr_speed, tfc_getscale(wr_speed_scale),
  82                         TFC_UTODSECS(current_time - delta_time));
  83                 if (was_sigint == NO) tfc_esay("\n");
  84                 xexit(0);
  85         }
  86
  87         if (do_statline_dynamic == YES) inplace = "\033[2K\r";
  88         else inplace = "";
  89
  90         if (do_less_stats == YES) {
  91                 tfc_nfsay(stderr, "%s%s:"
  92                         " %s %.2f%s,"
  93                         " %.2f%s B/s",
  94                         inplace, progname,
  95                         oper_mode,
  96                         human_totalproc_dst, tfc_getscale(dst_scale_idx),
  97                         human_wr_speed, tfc_getscale(wr_speed_scale));
  98         }
  99         else {
 100                 if (ctr_mode <= TFC_MODE_PLAIN) tfc_nfsay(stderr, "%s%s: read: %llu (%.2f%s),"
 101                         " %s %llu (%.2f%s) bytes,"
 102                         " (%llu (%.2f%s) B/s)",
 103                         inplace, progname,
 104                         total_processed_src, human_totalproc_src, tfc_getscale(src_scale_idx),
 105                         oper_mode,
 106                         total_processed_dst, human_totalproc_dst, tfc_getscale(dst_scale_idx),
 107                         wr_speed, human_wr_speed, tfc_getscale(wr_speed_scale));
 108                 else tfc_nfsay(stderr, "%s%s: read: %llu (%.2f%s),"
 109                         " %s %s %llu (%.2f%s) bytes,"
 110                         " (%llu (%.2f%s) B/s)",
 111                         inplace, progname,
 112                         total_processed_src, human_totalproc_src, tfc_getscale(src_scale_idx),
 113                         tfc_modename(ctr_mode), oper_mode,
 114                         total_processed_dst, human_totalproc_dst, tfc_getscale(dst_scale_idx),
 115                         wr_speed, human_wr_speed, tfc_getscale(wr_speed_scale));
 116         }
 117
 118         if ((do_statline_dynamic == NO || last == YES || signal == -1) && was_sigint == NO) tfc_esay("\n");
 119         statline_was_shown = YES;
 120
 121         delta_processed = 0;
 122         tfc_getcurtime(&delta_time);
 123
 124         if (signal == SIGTSTP) {
 125                 tfc_esay("stopping.");
 126                 kill(getpid(), SIGSTOP);
 127         }
 128
 129         if (status_timer) setup_next_alarm(status_timer);
 130 }
 131
 132 void change_status_width(int signal)
 133 {
 134         if (do_less_stats == YES) do_less_stats = NO;
 135         else if (do_less_stats == NO) do_less_stats = YES;
 136 }
 137
 138 void change_status_timer(int signal)
 139 {
 140         static tfc_useconds reset_timer;
 141         tfc_useconds t;
 142
 143         tfc_getcurtime(&t);
 144         if (reset_timer && (t - reset_timer) < TFC_DTOUSECS(0.1)) status_timer = 0;
 145         reset_timer = t;
 146
 147         if (status_timer == 0) status_timer = TFC_DTOUSECS(0.25);
 148         else status_timer *= 2;
 149
 150         if (verbose) tfc_esay("%s: status timer was changed to %.2fs",
 151                 progname, TFC_UTODSECS(status_timer));
 152         setup_next_alarm(status_timer);
 153 }
 154
 155 void setup_next_alarm(tfc_useconds useconds)
 156 {
 157         struct itimerval it;
 158
 159         memset(&it, 0, sizeof(struct itimerval));
 160         it.it_value.tv_sec = useconds / 1000000;
 161         it.it_value.tv_usec = useconds % 1000000;
 162         setitimer(ITIMER_REAL, &it, NULL);
 163 }