76 lines
3.5 KiB
Fish
76 lines
3.5 KiB
Fish
function gitea_key -d "Generate (or regenerate) an ed25519 SSH key for Gitea and configure ~/.ssh/config"
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set -l key_path "$HOME/.ssh/id_ed25519_gitea"
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set -l pub_path "$key_path.pub"
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set -l config_path "$HOME/.ssh/config"
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set -l host "gitssh.toomuchtaco.net"
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# ── Step 1: Handle existing key ─────────────────────────────────────────
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if test -f "$key_path"
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echo "An SSH key already exists at $key_path"
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read -p 'echo "Overwrite it? [y/N] "' -l confirm
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if test "$confirm" != "y" -a "$confirm" != "Y"
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echo "Aborted."
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return 1
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end
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echo ""
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end
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# ── Step 2: Generate the key ────────────────────────────────────────────
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# -t ed25519: modern, secure, fast elliptic-curve key
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# -f: output file
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# -N "": empty passphrase (prompts to set one if desired)
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ssh-keygen -t ed25519 -f "$key_path" -N ""
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echo ""
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# ── Step 3: Update ~/.ssh/config ────────────────────────────────────────
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# If the host block already exists, update the IdentityFile line in place.
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# Otherwise, append a new block at the end of the file.
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if grep -q "^Host $host\$" "$config_path" 2>/dev/null
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# Host block exists — update the IdentityFile line.
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# If an IdentityFile line already exists under this Host, replace it;
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# otherwise add one after the HostName line.
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if grep -A5 "^Host $host\$" "$config_path" | grep -q "IdentityFile"
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sed -i "/^Host $host\$/,/^Host /s|IdentityFile .*|IdentityFile $key_path|" "$config_path"
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echo "Updated IdentityFile for Host $host in $config_path"
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else
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sed -i "/^Host $host\$/,/^Host /s|HostName .*|&\n\tIdentityFile $key_path|" "$config_path"
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echo "Added IdentityFile for Host $host in $config_path"
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end
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else
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# No Host block yet — append one.
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# printf interprets \t as a literal tab (unlike echo in Fish).
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printf "\n# Gitea\nHost %s\n\tHostName %s\n\tUser git\n\tIdentityFile %s\n" \
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"$host" "$host" "$key_path" >>"$config_path"
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echo "Appended Host block for $host to $config_path"
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end
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# ── Step 4: Set correct permissions ────────────────────────────────────
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chmod 600 "$key_path"
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chmod 644 "$pub_path"
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chmod 600 "$config_path"
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echo ""
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# ── Step 5: Print the public key ────────────────────────────────────────
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echo "=============================="
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echo " Public key (add to Gitea): "
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echo "=============================="
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echo ""
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cat "$pub_path"
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echo ""
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echo "=============================="
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echo "Key copied to clipboard if pbcopy/xclip is available."
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if command -v pbcopy &>/dev/null
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cat "$pub_path" | pbcopy
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echo "(copied to clipboard via pbcopy)"
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else if command -v xclip &>/dev/null
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cat "$pub_path" | xclip -selection clipboard
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echo "(copied to clipboard via xclip)"
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else if command -v wl-copy &>/dev/null
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cat "$pub_path" | wl-copy
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echo "(copied to clipboard via wl-copy)"
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end
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echo "=============================="
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end
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