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Read fixed bytes size from /dev/urandom (#3052)

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Co-authored-by: José Valim <jose.valim@gmail.com>
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João Henrique Ferreira de Freitas 2025-09-02 09:55:21 -03:00 • committed by GitHub
parent 62f85951b8
commit dd8ce5439c
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2 changed files with 2 additions and 2 deletions
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2
rel/app/env.sh.eex
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@ -15,6 +15,6 @@ export PATH="${vendor_dir}/otp/erts-<%= @release.erts_version%>/bin:${vendor_dir
if [ ! -z "${LIVEBOOK_NODE}" ]; then export RELEASE_NODE=${LIVEBOOK_NODE}; fi
if [ ! -z "${LIVEBOOK_COOKIE}" ]; then export RELEASE_COOKIE=${LIVEBOOK_COOKIE}; fi
export RELEASE_COOKIE="${RELEASE_COOKIE:-$(cat /dev/urandom | env LC_ALL=C tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)}"
export RELEASE_COOKIE="${RELEASE_COOKIE:-$(head -c 512 /dev/urandom | env LC_ALL=C tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)}"
cd $HOME

2
rel/server/env.sh.eex
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@ -43,7 +43,7 @@ else
# specifically want the temporary node cookie to be random, rather than
# a fixed value. Note that this value is overriden on boot, so other
# than being the initial node cookie, we don't really use it.
export RELEASE_COOKIE="${RELEASE_COOKIE:-$(cat /dev/urandom | env LC_ALL=C tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)}"
export RELEASE_COOKIE="${RELEASE_COOKIE:-$(head -c 512 /dev/urandom | env LC_ALL=C tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)}"
cd $HOME
fi