Mercurial > dropbear

annotate progressmeter.c @ 994:5c5ade336926

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Prefer stronger algorithms in algorithm negotiation. Prefer diffie-hellman-group14-sha1 (2048 bit) over diffie-hellman-group1-sha1 (1024 bit). Due to meet-in-the-middle attacks the effective key length of three key 3DES is 112 bits. AES is stronger and faster then 3DES. Prefer to delay the start of compression until after authentication has completed. This avoids exposing compression code to attacks from unauthenticated users. (github pull request #9)
author Fedor Brunner <fedor.brunner@azet.sk>
date Fri, 23 Jan 2015 23:00:25 +0800
parents b72f98803e46
children
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rev   line source
4
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1 #ifdef PROGRESS_METER
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2 /*
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3 * Copyright (c) 2003 Nils Nordman. All rights reserved.
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4 *
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5 * Redistribution and use in source and binary forms, with or without
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6 * modification, are permitted provided that the following conditions
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7 * are met:
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8 * 1. Redistributions of source code must retain the above copyright
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9 * notice, this list of conditions and the following disclaimer.
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10 * 2. Redistributions in binary form must reproduce the above copyright
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11 * notice, this list of conditions and the following disclaimer in the
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12 * documentation and/or other materials provided with the distribution.
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13 *
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14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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24 */
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25
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26 #include "includes.h"
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27 /*RCSID("$OpenBSD: progressmeter.c,v 1.24 2005/06/07 13:25:23 jaredy Exp $");*/
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28
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29 #include "progressmeter.h"
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30 #include "atomicio.h"
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31 #include "scpmisc.h"
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32
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33 #define DEFAULT_WINSIZE 80
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34 #define MAX_WINSIZE 512
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35 #define PADDING 1 /* padding between the progress indicators */
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36 #define UPDATE_INTERVAL 1 /* update the progress meter every second */
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37 #define STALL_TIME 5 /* we're stalled after this many seconds */
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38
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39 /* determines whether we can output to the terminal */
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40 static int can_output(void);
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41
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42 /* formats and inserts the specified size into the given buffer */
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43 static void format_size(char *, int, off_t);
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44 static void format_rate(char *, int, off_t);
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45
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46 /* window resizing */
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47 static void sig_winch(int);
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48 static void setscreensize(void);
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49
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50 /* updates the progressmeter to reflect the current state of the transfer */
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51 void refresh_progress_meter(void);
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52
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53 /* signal handler for updating the progress meter */
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54 static void update_progress_meter(int);
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55
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56 static time_t start; /* start progress */
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57 static time_t last_update; /* last progress update */
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58 static char *file; /* name of the file being transferred */
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59 static off_t end_pos; /* ending position of transfer */
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60 static off_t cur_pos; /* transfer position as of last refresh */
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61 static volatile off_t *counter; /* progress counter */
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62 static long stalled; /* how long we have been stalled */
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63 static int bytes_per_second; /* current speed in bytes per second */
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64 static int win_size; /* terminal window size */
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65 static volatile sig_atomic_t win_resized; /* for window resizing */
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67 /* units for format_size */
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68 static const char unit[] = " KMGT";
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70 static int
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71 can_output(void)
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72 {
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73 return (getpgrp() == tcgetpgrp(STDOUT_FILENO));
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74 }
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76 static void
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77 format_rate(char *buf, int size, off_t bytes)
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78 {
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79 int i;
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81 bytes *= 100;
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82 for (i = 0; bytes >= 100*1000 && unit[i] != 'T'; i++)
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83 bytes = (bytes + 512) / 1024;
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84 if (i == 0) {
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85 i++;
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86 bytes = (bytes + 512) / 1024;
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87 }
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88 snprintf(buf, size, "%3lld.%1lld%c%s",
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89 (long long) (bytes + 5) / 100,
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90 (long long) (bytes + 5) / 10 % 10,
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91 unit[i],
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92 i ? "B" : " ");
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93 }
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94
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95 static void
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96 format_size(char *buf, int size, off_t bytes)
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97 {
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98 int i;
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99
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100 for (i = 0; bytes >= 10000 && unit[i] != 'T'; i++)
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101 bytes = (bytes + 512) / 1024;
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102 snprintf(buf, size, "%4lld%c%s",
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103 (long long) bytes,
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104 unit[i],
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105 i ? "B" : " ");
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106 }
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107
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108 void
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109 refresh_progress_meter(void)
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110 {
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111 char buf[MAX_WINSIZE + 1];
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112 time_t now;
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113 off_t transferred;
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114 double elapsed;
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115 int percent;
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116 off_t bytes_left;
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117 int cur_speed;
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118 int hours, minutes, seconds;
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119 int i, len;
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120 int file_len;
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121
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122 transferred = *counter - cur_pos;
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123 cur_pos = *counter;
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124 now = time(NULL);
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125 bytes_left = end_pos - cur_pos;
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126
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127 if (bytes_left > 0)
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128 elapsed = now - last_update;
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129 else {
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130 elapsed = now - start;
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131 /* Calculate true total speed when done */
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132 transferred = end_pos;
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133 bytes_per_second = 0;
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134 }
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135
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136 /* calculate speed */
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137 if (elapsed != 0)
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138 cur_speed = (transferred / elapsed);
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139 else
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140 cur_speed = transferred;
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141
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142 #define AGE_FACTOR 0.9
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143 if (bytes_per_second != 0) {
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144 bytes_per_second = (bytes_per_second * AGE_FACTOR) +
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145 (cur_speed * (1.0 - AGE_FACTOR));
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146 } else
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147 bytes_per_second = cur_speed;
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148
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diff changeset
149 /* filename */
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parents:
diff changeset
150 buf[0] = '\0';
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parents:
diff changeset
151 file_len = win_size - 35;
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parents:
diff changeset
152 if (file_len > 0) {
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parents:
diff changeset
153 len = snprintf(buf, file_len + 1, "\r%s", file);
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parents:
diff changeset
154 if (len < 0)
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diff changeset
155 len = 0;
287
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parents: 38
diff changeset
156 if (len >= file_len + 1)
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parents: 38
diff changeset
157 len = file_len;
4
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parents:
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158 for (i = len; i < file_len; i++ )
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
159 buf[i] = ' ';
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parents:
diff changeset
160 buf[file_len] = '\0';
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parents:
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161 }
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parents:
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162
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Matt Johnston <matt@ucc.asn.au>
parents:
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163 /* percent of transfer done */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
164 if (end_pos != 0)
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parents:
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165 percent = ((float)cur_pos / end_pos) * 100;
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parents:
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166 else
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parents:
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167 percent = 100;
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Matt Johnston <matt@ucc.asn.au>
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168 snprintf(buf + strlen(buf), win_size - strlen(buf),
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
169 " %3d%% ", percent);
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parents:
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170
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
171 /* amount transferred */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
172 format_size(buf + strlen(buf), win_size - strlen(buf),
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Matt Johnston <matt@ucc.asn.au>
parents:
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173 cur_pos);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174 strlcat(buf, " ", win_size);
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parents:
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175
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
176 /* bandwidth usage */
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parents:
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177 format_rate(buf + strlen(buf), win_size - strlen(buf),
287
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
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parents: 38
diff changeset
178 (off_t)bytes_per_second);
4
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Matt Johnston <matt@ucc.asn.au>
parents:
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179 strlcat(buf, "/s ", win_size);
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parents:
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180
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
181 /* ETA */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
182 if (!transferred)
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
183 stalled += elapsed;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
184 else
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parents:
diff changeset
185 stalled = 0;
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parents:
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186
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187 if (stalled >= STALL_TIME)
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diff changeset
188 strlcat(buf, "- stalled -", win_size);
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Matt Johnston <matt@ucc.asn.au>
parents:
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189 else if (bytes_per_second == 0 && bytes_left)
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parents:
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190 strlcat(buf, " --:-- ETA", win_size);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
191 else {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
192 if (bytes_left > 0)
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
193 seconds = bytes_left / bytes_per_second;
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parents:
diff changeset
194 else
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
195 seconds = elapsed;
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parents:
diff changeset
196
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
197 hours = seconds / 3600;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
198 seconds -= hours * 3600;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
199 minutes = seconds / 60;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
200 seconds -= minutes * 60;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
201
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
202 if (hours != 0)
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
203 snprintf(buf + strlen(buf), win_size - strlen(buf),
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
204 "%d:%02d:%02d", hours, minutes, seconds);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
205 else
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
206 snprintf(buf + strlen(buf), win_size - strlen(buf),
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
207 " %02d:%02d", minutes, seconds);
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parents:
diff changeset
208
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
209 if (bytes_left > 0)
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
210 strlcat(buf, " ETA", win_size);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
211 else
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212 strlcat(buf, " ", win_size);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
213 }
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parents:
diff changeset
214
287
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
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parents: 38
diff changeset
215 atomicio(vwrite, STDOUT_FILENO, buf, win_size - 1);
4
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
216 last_update = now;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
217 }
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parents:
diff changeset
218
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
219 static void
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
220 update_progress_meter(int ignore)
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
221 {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
222 int save_errno;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
223
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
224 save_errno = errno;
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parents:
diff changeset
225
287
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
226 if (win_resized) {
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
227 setscreensize();
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
228 win_resized = 0;
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
229 }
4
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parents:
diff changeset
230 if (can_output())
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parents:
diff changeset
231 refresh_progress_meter();
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parents:
diff changeset
232
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
233 signal(SIGALRM, update_progress_meter);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
234 alarm(UPDATE_INTERVAL);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
235 errno = save_errno;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
237
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
238 void
287
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
239 start_progress_meter(char *f, off_t filesize, off_t *ctr)
4
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
240 {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241 start = last_update = time(NULL);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
242 file = f;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
243 end_pos = filesize;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
244 cur_pos = 0;
287
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
245 counter = ctr;
4
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
246 stalled = 0;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
247 bytes_per_second = 0;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
248
287
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
249 setscreensize();
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
250 if (can_output())
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
251 refresh_progress_meter();
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
252
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
253 signal(SIGALRM, update_progress_meter);
287
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
254 signal(SIGWINCH, sig_winch);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
255 alarm(UPDATE_INTERVAL);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
256 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
257
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
258 void
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
259 stop_progress_meter(void)
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
260 {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
261 alarm(0);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
262
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
263 if (!can_output())
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
264 return;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
265
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
266 /* Ensure we complete the progress */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
267 if (cur_pos != end_pos)
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
268 refresh_progress_meter();
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parents:
diff changeset
269
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
270 atomicio(vwrite, STDOUT_FILENO, "\n", 1);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
271 }
287
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Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
272
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
273 static void
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Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
274 sig_winch(int sig)
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Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
275 {
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Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
276 win_resized = 1;
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Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
277 }
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Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
278
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
279 static void
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Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
280 setscreensize(void)
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Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
281 {
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Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
282 struct winsize winsize;
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Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
283
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
284 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &winsize) != -1 &&
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
285 winsize.ws_col != 0) {
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Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
286 if (winsize.ws_col > MAX_WINSIZE)
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
287 win_size = MAX_WINSIZE;
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
288 else
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
289 win_size = winsize.ws_col;
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
290 } else
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
291 win_size = DEFAULT_WINSIZE;
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
292 win_size += 1; /* trailing \0 */
b72f98803e46 Update to scp from OpenSSH portable 4.3p2
Matt Johnston <matt@ucc.asn.au>
parents: 38
diff changeset
293 }
4
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
294 #endif /* PROGRESS_METER */