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47 lines
1.4 KiB
Bash
47 lines
1.4 KiB
Bash
#!/usr/bin/env bash
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#
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# Author: Hari Sekhon
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# Date: 2019-09-16
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#
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# https://github.com/HariSekhon/DevOps-Bash-tools
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#
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# License: see accompanying LICENSE file
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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# Installs the SSH Key(s) from user's GitHub to the local $HOME/.ssh/authorized_keys
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#
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# Uses $GITHUB_USER or $USER as the expected GitHub user
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#
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# set $AUTHORIZED_KEYS to specify an alternative ssh keys location
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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home="${HOME:-$(cd && pwd)}"
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authorized_keys="${AUTHORIZED_KEYS:-$home/.ssh/authorized_keys}"
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"$srcdir/../github/github_ssh_get_user_public_keys.sh" |
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while read -r ssh_key; do
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# skip comment lines
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[ -z "$(sed 's/#.*//; /^[[:space:]]*$/d' <<< "$ssh_key")" ] && continue
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echo "Processing key: $ssh_key"
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#algo_hash="$(awk '{print $1" "$2}' <<< "$ssh_key")"
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algo_hash="${ssh_key%%==*}"
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if [ -f "$authorized_keys" ] &&
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grep -Fq "$algo_hash" "$authorized_keys"; then
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echo "Key already found in $authorized_keys, skipping..."
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else
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echo "Adding key to $authorized_keys"
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mkdir -vp "$(dirname "$authorized_keys")"
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echo "$ssh_key from GitHub" >> "$authorized_keys"
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fi
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echo
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echo "ensuring correct 0600 permissions applied to $authorized_keys"
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chmod 0600 "$authorized_keys"
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echo
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done
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echo Done
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