2164a8d7b8
See this thread for reasoning and acceptance from contributors: https://groups.google.com/d/topic/qubes-devel/G7KzrfU0lWY/discussion "Changing qubes-core-admin license to LGPL v2.1+"
77 linhas
2.1 KiB
Bash
Ficheiro executável
77 linhas
2.1 KiB
Bash
Ficheiro executável
#!/bin/bash
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# The Qubes OS Project, http://www.qubes-os.org
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#
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# Copyright (C) 2016 Patrick Schleizer <adrelanos@riseup.net>
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, see <https://www.gnu.org/licenses/>.
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## Similar code as Boot Clock Randomization.
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## https://www.whonix.org/wiki/Boot_Clock_Randomization
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set -e
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## Get a random 0 or 1.
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## Will use this to decide to use plus or minus.
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ZERO_OR_ONE="$(shuf -i0-1 -n1 --random-source=/dev/random)"
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## Create a random number between 0 and 180.
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DELAY="$(shuf -i0-180 -n1 --random-source=/dev/random)"
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## Create a random number between 0 and 999999999.
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##
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## Thanks to
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## https://stackoverflow.com/questions/22887891/how-can-i-get-a-random-dev-random-number-between-0-and-999999999-in-bash
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NANOSECONDS="$(shuf -i0-999999999 -n1 --random-source=/dev/random)"
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## Examples NANOSECONDS:
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## 117752805
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## 38653957
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## Add leading zeros, because `date` expects 9 digits.
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NANOSECONDS="$(printf '%0*d\n' 9 "$NANOSECONDS")"
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## Using
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## printf '%0*d\n' 9 "38653957"
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## 38653957
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## becomes
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## 038653957
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## Examples NANOSECONDS:
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## 117752805
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## 038653957
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if [ "$ZERO_OR_ONE" = "0" ]; then
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PLUS_OR_MINUS="-"
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elif [ "$ZERO_OR_ONE" = "1" ]; then
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PLUS_OR_MINUS="+"
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else
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exit 2
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fi
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#OLD_TIME="$(date)"
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#OLD_TIME_NANOSECONDS="$(date +%s.%N)"
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OLD_UNIXTIME="$(date +%s)"
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NEW_TIME="$(( $OLD_UNIXTIME $PLUS_OR_MINUS $DELAY ))"
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NEW_TIME_NANOSECONDS="$NEW_TIME.$NANOSECONDS"
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echo "$NEW_TIME_NANOSECONDS"
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## Testing the `date` syntax:
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## date --date @1396733199.112834496
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## date --date "@$NEW_TIME_NANOSECONDS"
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