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refactor: Extract SSH key management helpers to reduce nesting
Created helper functions in shared/common.sh to simplify ensure_ssh_key(): - generate_ssh_key_if_missing(key_path): Generate SSH key if needed - get_ssh_fingerprint(pub_path): Get MD5 fingerprint - json_escape(string): JSON-escape strings for API bodies Refactored ensure_ssh_key() in all cloud providers to use these helpers: - Reduced function length from 35-52 lines to 24-28 lines - Eliminated nested conditionals - Made the code flow more linear and readable - Centralized SSH key generation and fingerprint logic Benefits: - Single source of truth for SSH key operations - Reduced code duplication (~40 lines per provider → 3 helper functions) - Easier to maintain and test - More consistent error handling All tests pass (42/42). Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
Sprite
parent
528694123d
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da7724da68
5 changed files with 81 additions and 68 deletions
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@ -103,29 +103,22 @@ ensure_ssh_key() {
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local key_path="$HOME/.ssh/id_ed25519"
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local pub_path="${key_path}.pub"
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# Generate SSH key if it doesn't exist
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if [[ ! -f "$key_path" ]]; then
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log_warn "Generating SSH key..."
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mkdir -p "$HOME/.ssh"
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ssh-keygen -t ed25519 -f "$key_path" -N "" -q
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log_info "SSH key generated at $key_path"
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fi
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# Generate key if needed
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generate_ssh_key_if_missing "$key_path"
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local pub_key=$(cat "$pub_path")
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local key_name="spawn-$(hostname)-$(date +%s)"
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# Check if this key is already registered
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local existing_fingerprint=$(ssh-keygen -lf "$pub_path" -E md5 2>/dev/null | awk '{print $2}' | sed 's/MD5://')
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# Check if already registered
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local fingerprint=$(get_ssh_fingerprint "$pub_path")
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local existing_keys=$(do_api GET "/account/keys")
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if echo "$existing_keys" | grep -q "$existing_fingerprint"; then
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if echo "$existing_keys" | grep -q "$fingerprint"; then
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log_info "SSH key already registered with DigitalOcean"
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return 0
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fi
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# Register the key
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log_warn "Registering SSH key with DigitalOcean..."
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local json_pub_key=$(python3 -c "import json; print(json.dumps('$pub_key'))" 2>/dev/null || echo "\"$pub_key\"")
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local key_name="spawn-$(hostname)-$(date +%s)"
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local pub_key=$(cat "$pub_path")
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local json_pub_key=$(json_escape "$pub_key")
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local register_body="{\"name\":\"$key_name\",\"public_key\":$json_pub_key}"
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local register_response=$(do_api POST "/account/keys" "$register_body")
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@ -192,12 +185,7 @@ create_server() {
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# Get all SSH key IDs
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local ssh_keys_response=$(do_api GET "/account/keys")
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local ssh_key_ids=$(python3 -c "
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import json, sys
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data = json.loads(sys.stdin.read())
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ids = [k['id'] for k in data.get('ssh_keys', [])]
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print(json.dumps(ids))
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" <<< "$ssh_keys_response")
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local ssh_key_ids=$(extract_ssh_key_ids "$ssh_keys_response" "ssh_keys")
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# JSON-escape the cloud-init userdata
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local userdata=$(get_cloud_init_userdata)
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@ -98,29 +98,22 @@ ensure_ssh_key() {
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local key_path="$HOME/.ssh/id_ed25519"
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local pub_path="${key_path}.pub"
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# Generate SSH key if it doesn't exist
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if [[ ! -f "$key_path" ]]; then
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log_warn "Generating SSH key..."
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mkdir -p "$HOME/.ssh"
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ssh-keygen -t ed25519 -f "$key_path" -N "" -q
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log_info "SSH key generated at $key_path"
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fi
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# Generate key if needed
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generate_ssh_key_if_missing "$key_path"
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local pub_key=$(cat "$pub_path")
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local key_name="spawn-$(hostname)-$(date +%s)"
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# Check if this key is already registered
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# Check if already registered
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local fingerprint=$(get_ssh_fingerprint "$pub_path")
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local existing_keys=$(hetzner_api GET "/ssh_keys")
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local existing_fingerprint=$(ssh-keygen -lf "$pub_path" -E md5 2>/dev/null | awk '{print $2}' | sed 's/MD5://')
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if echo "$existing_keys" | grep -q "$existing_fingerprint"; then
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if echo "$existing_keys" | grep -q "$fingerprint"; then
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log_info "SSH key already registered with Hetzner"
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return 0
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fi
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# Register the key
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log_warn "Registering SSH key with Hetzner..."
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local json_pub_key=$(python3 -c "import json; print(json.dumps('$pub_key'))" 2>/dev/null || echo "\"$pub_key\"")
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local key_name="spawn-$(hostname)-$(date +%s)"
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local pub_key=$(cat "$pub_path")
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local json_pub_key=$(json_escape "$pub_key")
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local register_body="{\"name\":\"$key_name\",\"public_key\":$json_pub_key}"
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local register_response=$(hetzner_api POST "/ssh_keys" "$register_body")
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@ -187,12 +180,7 @@ create_server() {
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# Get all SSH key IDs
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local ssh_keys_response=$(hetzner_api GET "/ssh_keys")
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local ssh_key_ids=$(python3 -c "
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import json, sys
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data = json.loads(sys.stdin.read())
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ids = [k['id'] for k in data.get('ssh_keys', [])]
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print(json.dumps(ids))
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" <<< "$ssh_keys_response")
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local ssh_key_ids=$(extract_ssh_key_ids "$ssh_keys_response" "ssh_keys")
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# JSON-escape the cloud-init userdata
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local userdata=$(get_cloud_init_userdata)
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@ -64,21 +64,16 @@ EOF
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ensure_ssh_key() {
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local key_path="$HOME/.ssh/id_ed25519" pub_path="${key_path}.pub"
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if [[ ! -f "$key_path" ]]; then
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log_warn "Generating SSH key..."
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mkdir -p "$HOME/.ssh"
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ssh-keygen -t ed25519 -f "$key_path" -N "" -q
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log_info "SSH key generated at $key_path"
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fi
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local pub_key=$(cat "$pub_path")
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local existing_fingerprint=$(ssh-keygen -lf "$pub_path" -E md5 2>/dev/null | awk '{print $2}' | sed 's/MD5://')
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generate_ssh_key_if_missing "$key_path"
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local fingerprint=$(get_ssh_fingerprint "$pub_path")
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local existing_keys=$(linode_api GET "/profile/sshkeys")
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if echo "$existing_keys" | grep -q "$existing_fingerprint"; then
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if echo "$existing_keys" | grep -q "$fingerprint"; then
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log_info "SSH key already registered with Linode"; return 0
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fi
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log_warn "Registering SSH key with Linode..."
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local key_name="spawn-$(hostname)-$(date +%s)"
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local json_pub_key=$(python3 -c "import json; print(json.dumps('$pub_key'))" 2>/dev/null || echo "\"$pub_key\"")
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local pub_key=$(cat "$pub_path")
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local json_pub_key=$(json_escape "$pub_key")
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local register_body="{\"label\":\"$key_name\",\"ssh_key\":$json_pub_key}"
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local register_response=$(linode_api POST "/profile/sshkeys" "$register_body")
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if echo "$register_response" | grep -q '"id"'; then
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@ -290,6 +290,51 @@ get_openrouter_api_key_oauth() {
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fi
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}
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# ============================================================
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# SSH key management helpers
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# ============================================================
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# Generate SSH key if it doesn't exist
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# Usage: generate_ssh_key_if_missing KEY_PATH
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generate_ssh_key_if_missing() {
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local key_path="$1"
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if [[ -f "$key_path" ]]; then
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return 0
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fi
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log_warn "Generating SSH key..."
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mkdir -p "$(dirname "$key_path")"
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ssh-keygen -t ed25519 -f "$key_path" -N "" -q
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log_info "SSH key generated at $key_path"
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}
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# Get MD5 fingerprint of SSH public key
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# Usage: get_ssh_fingerprint PUB_KEY_PATH
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get_ssh_fingerprint() {
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local pub_path="$1"
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ssh-keygen -lf "$pub_path" -E md5 2>/dev/null | awk '{print $2}' | sed 's/MD5://'
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}
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# JSON-escape a string (for embedding in JSON bodies)
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# Usage: json_escape STRING
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json_escape() {
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local string="$1"
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python3 -c "import json; print(json.dumps('$string'))" 2>/dev/null || echo "\"$string\""
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}
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# Extract SSH key IDs from cloud provider API response
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# Usage: extract_ssh_key_ids API_RESPONSE KEY_FIELD
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# KEY_FIELD: "ssh_keys" (DigitalOcean/Vultr) or "data" (Linode)
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extract_ssh_key_ids() {
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local api_response="$1"
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local key_field="${2:-ssh_keys}"
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python3 -c "
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import json, sys
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data = json.loads(sys.stdin.read())
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ids = [k['id'] for k in data.get('$key_field', [])]
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print(json.dumps(ids))
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" <<< "$api_response"
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}
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# ============================================================
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# SSH connectivity helpers
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# ============================================================
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@ -79,24 +79,26 @@ EOF
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ensure_ssh_key() {
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local key_path="$HOME/.ssh/id_ed25519"
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local pub_path="${key_path}.pub"
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if [[ ! -f "$key_path" ]]; then
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log_warn "Generating SSH key..."
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mkdir -p "$HOME/.ssh"
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ssh-keygen -t ed25519 -f "$key_path" -N "" -q
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log_info "SSH key generated at $key_path"
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fi
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local pub_key=$(cat "$pub_path")
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# Generate key if needed
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generate_ssh_key_if_missing "$key_path"
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# Check if already registered
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local fingerprint=$(get_ssh_fingerprint "$pub_path")
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local existing_keys=$(vultr_api GET "/ssh-keys")
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local existing_fingerprint=$(ssh-keygen -lf "$pub_path" -E md5 2>/dev/null | awk '{print $2}' | sed 's/MD5://')
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if echo "$existing_keys" | grep -q "$existing_fingerprint"; then
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if echo "$existing_keys" | grep -q "$fingerprint"; then
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log_info "SSH key already registered with Vultr"
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return 0
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fi
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# Register the key
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log_warn "Registering SSH key with Vultr..."
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local key_name="spawn-$(hostname)-$(date +%s)"
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local json_pub_key=$(python3 -c "import json; print(json.dumps('$pub_key'))" 2>/dev/null || echo "\"$pub_key\"")
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local pub_key=$(cat "$pub_path")
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local json_pub_key=$(json_escape "$pub_key")
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local register_body="{\"name\":\"$key_name\",\"ssh_key\":$json_pub_key}"
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local register_response=$(vultr_api POST "/ssh-keys" "$register_body")
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if echo "$register_response" | grep -q '"ssh_key"'; then
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log_info "SSH key registered with Vultr"
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else
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@ -150,12 +152,7 @@ create_server() {
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# Get all SSH key IDs
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local ssh_keys_response=$(vultr_api GET "/ssh-keys")
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local ssh_key_ids=$(python3 -c "
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import json, sys
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data = json.loads(sys.stdin.read())
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ids = [k['id'] for k in data.get('ssh_keys', [])]
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print(json.dumps(ids))
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" <<< "$ssh_keys_response")
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local ssh_key_ids=$(extract_ssh_key_ids "$ssh_keys_response" "ssh_keys")
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local userdata=$(get_cloud_init_userdata)
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local userdata_b64=$(echo "$userdata" | base64 -w0 2>/dev/null || echo "$userdata" | base64)
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