404 lines
14 KiB
Bash
404 lines
14 KiB
Bash
#!/usr/bin/env bash
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# pass ssh extension for importing/exporting SSH keys and configs
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VERSION="0.1.0"
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SSH_DIR="$HOME/.ssh"
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CONFIG_FILE="$SSH_DIR/config"
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PASS_DIR="$PASSWORD_STORE_DIR"
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VERBOSE=0
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# Helper functions
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die() { echo "Error: $*" >&2; exit 1; }
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debug() { [[ $VERBOSE -eq 1 ]] && echo "DEBUG: $*" >&2; }
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yesno() {
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local answer
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read -r -p "$1 [y/N] " answer
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[[ "$answer" =~ [Yy] ]]
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}
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# Import a host and its dependencies
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cmd_import_with_deps() {
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local hostname="$1"
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local is_dep="${2:-false}"
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[[ -z "$hostname" ]] && die "Usage: pass ssh import <hostname>"
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debug "Starting import for host: $hostname (dependency: $is_dep)"
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# Skip if already imported in this session
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local imported_key="imported_$hostname"
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if [[ "${!imported_key}" == "1" ]]; then
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debug "Host $hostname already imported in this session, skipping"
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return
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fi
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declare -g "$imported_key=1"
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debug "Marking $hostname as imported"
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# Find Host block in SSH config
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debug "Searching for Host block in $CONFIG_FILE"
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local in_block=0
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local host_block=()
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while IFS= read -r line; do
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debug "Processing line: $line"
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if [[ "$line" =~ ^[[:space:]]*# ]]; then
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debug "Skipping comment line"
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continue
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fi
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if (( in_block )); then
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if [[ "$line" =~ ^[Hh][Oo][Ss][Tt][[:space:]]+ ]]; then
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debug "Found next Host block, stopping"
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break
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fi
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debug "Adding line to host block"
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host_block+=("$line")
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else
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if [[ "$line" =~ ^[Hh][Oo][Ss][Tt][[:space:]]+$hostname([[:space:]]+|$) ]]; then
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debug "Found matching Host block"
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in_block=1
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host_block+=("$line")
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fi
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fi
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done < "$CONFIG_FILE"
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(( ${#host_block[@]} )) || die "Host '$hostname' not found in $CONFIG_FILE"
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debug "Found ${#host_block[@]} lines in host block"
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# Check for ProxyJump directive and import dependencies
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debug "Checking for ProxyJump directives"
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local proxy_hosts=()
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for line in "${host_block[@]}"; do
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debug "Checking line for ProxyJump: $line"
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if [[ "$line" =~ ^[[:space:]]*[Pp][Rr][Oo][Xx][Yy][Jj][Uu][Mm][Pp][[:space:]]+([^[:space:]]+) ]]; then
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debug "Found ProxyJump directive: ${BASH_REMATCH[1]}"
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IFS=',' read -ra proxy_hosts <<< "${BASH_REMATCH[1]}"
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for proxy in "${proxy_hosts[@]}"; do
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# Remove leading/trailing whitespace
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proxy="${proxy#"${proxy%%[![:space:]]*}"}"
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proxy="${proxy%"${proxy##*[![:space:]]}"}"
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debug "Processing proxy host: $proxy"
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if [[ "$proxy" != "none" && "$proxy" != "NONE" ]]; then
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if $is_dep; then
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echo " Importing nested ProxyJump dependency: $proxy"
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else
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echo "Importing ProxyJump dependency: $proxy"
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fi
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cmd_import_with_deps "$proxy" true
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else
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debug "Skipping 'none' ProxyJump value"
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fi
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done
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fi
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done
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# Extract IdentityFiles and paths
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debug "Extracting IdentityFiles"
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local identity_files=()
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local identity_paths=()
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for line in "${host_block[@]}"; do
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if [[ "$line" =~ ^[Ii][Dd][Ee][Nn][Tt][Ii][Tt][Yy][Ff][Ii][Ll][Ee][[:space:]]+([^[:space:]]+) ]]; then
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identity_file="${BASH_REMATCH[1]}"
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debug "Found IdentityFile: $identity_file"
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identity_files+=("$identity_file")
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# Store original path relative to SSH_DIR
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if [[ "$identity_file" == "$SSH_DIR"/* ]]; then
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rel_path="${identity_file#$SSH_DIR/}"
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else
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rel_path="$identity_file"
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fi
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debug "Relative path: $rel_path"
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identity_paths+=("$rel_path")
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fi
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done
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# Process each IdentityFile with path tracking
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debug "Processing ${#identity_files[@]} IdentityFiles"
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for i in "${!identity_files[@]}"; do
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identity_file="${identity_files[$i]}"
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rel_path="${identity_paths[$i]}"
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debug "Processing IdentityFile $((i+1))/${#identity_files[@]}: $identity_file"
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# Expand path
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local expanded_path="${identity_file/#\~/$HOME}"
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expanded_path=$(realpath -m "$expanded_path")
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debug "Expanded path: $expanded_path"
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# Resolve relative to SSH_DIR if needed
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if [[ "$expanded_path" != "$SSH_DIR"/* ]]; then
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debug "Path not under SSH_DIR, adjusting"
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expanded_path="$SSH_DIR/$identity_file"
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fi
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# Check if private key exists
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if [[ -f "$expanded_path" ]]; then
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# Determine store path
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local rel_path="${expanded_path#$SSH_DIR/}"
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rel_path="${rel_path//../_dotdot_}" # Sanitize ..
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debug "Sanitized relative path: $rel_path"
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local store_path="ssh/$hostname/$rel_path"
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debug "Store path: $store_path"
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if $is_dep; then
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echo " Importing $expanded_path to $store_path"
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else
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echo "Importing $expanded_path to $store_path"
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fi
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# Insert into pass
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debug "Inserting key into pass store"
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pass insert --multiline "$store_path" < "$expanded_path" || die "Failed to insert $store_path"
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else
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debug "IdentityFile not found: $expanded_path"
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echo "Skipping non-existent IdentityFile: $identity_file"
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fi
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done
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# Save Host block
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local config_store="ssh/$hostname/config"
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debug "Saving Host block to $config_store"
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if $is_dep; then
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echo " Storing Host block in $config_store"
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else
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echo "Storing Host block in $config_store"
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fi
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printf "%s\n" "${host_block[@]}" | pass insert --multiline "$config_store" >/dev/null || die "Failed to save config"
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debug "Host block saved successfully"
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}
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# Import SSH keys and config into pass
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cmd_import() {
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cmd_import_with_deps "$1"
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}
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# Export SSH keys and config from pass
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cmd_export() {
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local hostname="$1"
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[[ -z "$hostname" ]] && die "Usage: pass ssh export <hostname>"
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# Retrieve Host block
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local config_store="ssh/$hostname/config"
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local host_block
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host_block=$(pass show "$config_store" 2>/dev/null) || die "No config found for $hostname"
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# Check existing Host entries
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local existing_patterns=()
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while IFS= read -r line; do
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if [[ "$line" =~ ^[Hh][Oo][Ss][Tt][[:space:]]+([^#]+) ]]; then
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existing_patterns+=("${BASH_REMATCH[1]}")
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fi
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done < "$CONFIG_FILE"
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# Check if exported Host patterns exist
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local exported_patterns
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if [[ "$host_block" =~ ^[Hh][Oo][Ss][Tt][[:space:]]+([^[:space:]#]+) ]]; then
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exported_patterns="${BASH_REMATCH[1]}"
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else
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die "Invalid Host block in $config_store"
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fi
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# Check for conflicts
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local conflict=0
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for pattern in $exported_patterns; do
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for existing in "${existing_patterns[@]}"; do
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if [[ " $existing " == *" $pattern "* ]]; then
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echo "Conflict: Host pattern '$pattern' exists in $CONFIG_FILE"
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conflict=1
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fi
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done
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done
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if (( conflict )) && ! yesno "Overwrite conflicting Host entries?"; then
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die "Export aborted"
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fi
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# Backup original config
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local backup="${CONFIG_FILE}.bak.$(date +%s)"
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cp "$CONFIG_FILE" "$backup" || die "Failed to backup config"
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# Remove conflicting Host blocks
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awk -v patterns="$exported_patterns" '
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BEGIN { in_block=0; delete_lines=0 }
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/^[Hh][Oo][Ss][Tt][[:space:]]+/ {
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if (in_block) { in_block=0 }
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split($0, parts, /[[:space:]]+/)
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for (i=2; i<=NF; i++) {
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for (p in patterns_arr) {
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if (parts[i] == patterns_arr[p]) {
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delete_lines=1
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in_block=1
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next
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}
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}
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}
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}
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in_block { next }
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delete_lines { delete_lines=0; next }
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{ print }
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' "$backup" > "$CONFIG_FILE" || die "Failed to remove conflicts"
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# Append new Host block
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echo "Appending Host block for $hostname to $CONFIG_FILE"
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echo "$host_block" >> "$CONFIG_FILE"
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# Export IdentityFiles
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local identity_files=()
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while IFS= read -r line; do
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if [[ "$line" =~ ^[Ii][Dd][Ee][Nn][Tt][Ii][Tt][Yy][Ff][Ii][Ll][Ee][[:space:]]+([^[:space:]]+) ]]; then
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identity_files+=("${BASH_REMATCH[1]}")
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fi
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done <<< "$host_block"
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for identity_file in "${identity_files[@]}"; do
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local expanded_path="${identity_file/#\~/$HOME}"
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expanded_path=$(realpath -m "$expanded_path")
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# Resolve relative to SSH_DIR
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if [[ "$expanded_path" != "$SSH_DIR"/* ]]; then
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expanded_path="$SSH_DIR/$identity_file"
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fi
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local rel_path="${expanded_path#$SSH_DIR/}"
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rel_path="${rel_path//../_dotdot_}"
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local store_path="ssh/$hostname/$rel_path"
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if ! pass show "$store_path" >/dev/null 2>&1; then
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echo "Warning: $store_path not found in pass"
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continue
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fi
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if [[ -f "$expanded_path" ]] && ! yesno "Overwrite $expanded_path?"; then
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echo "Skipping $expanded_path"
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continue
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fi
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echo "Exporting $store_path to $expanded_path"
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mkdir -p "$(dirname "$expanded_path")"
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pass show "$store_path" > "$expanded_path"
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chmod 600 "$expanded_path"
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done
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echo "Export complete. Original config backed up to $backup"
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}
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# Bulk operations
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cmd_import_all() {
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echo "Importing all hosts from $CONFIG_FILE"
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local hostname=""
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while IFS= read -r line; do
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if [[ "$line" =~ ^[Hh][Oo][Ss][Tt][[:space:]]+([^#[:space:]]+) ]]; then
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hostname="${BASH_REMATCH[1]}"
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echo "Importing host: $hostname"
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cmd_import_with_deps "$hostname" || echo "Failed to import $hostname"
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fi
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done < "$CONFIG_FILE"
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}
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cmd_export_all() {
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echo "Exporting all hosts to $CONFIG_FILE"
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local hosts=()
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while IFS= read -r -d '' path; do
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if [[ "$path" =~ ^ssh/([^/]+)/config ]]; then
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hosts+=("${BASH_REMATCH[1]}")
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fi
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done < <(pass ls ssh | grep -F /config | tr '\n' '\0')
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for host in "${hosts[@]}"; do
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echo "Exporting host: $host"
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cmd_export "$host" || echo "Failed to export $host"
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done
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}
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# Connect directly using stored keys
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cmd_connect() {
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local hostname="$1"
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[[ -z "$hostname" ]] && die "Usage: pass ssh connect <hostname>"
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# Create temporary directory for keys
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local tmp_dir=$(mktemp -d)
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trap 'rm -rf "$tmp_dir"' EXIT
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# Function to process a host and its ProxyJump dependencies
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process_host() {
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local host="$1"
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debug "Processing host: $host"
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# Retrieve Host block
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local config_store="ssh/$host/config"
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local host_block
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host_block=$(pass show "$config_store" 2>/dev/null) || die "No config found for $host"
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# Append to temporary SSH config
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echo "$host_block" >> "$tmp_config"
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# Extract and restore keys
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while IFS= read -r line; do
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if [[ "$line" =~ ^[[:space:]]*[Pp][Rr][Oo][Xx][Yy][Jj][Uu][Mm][Pp][[:space:]]+([^[:space:]]+) ]]; then
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debug "Found ProxyJump: ${BASH_REMATCH[1]}"
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IFS=',' read -ra proxy_hosts <<< "${BASH_REMATCH[1]}"
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for proxy in "${proxy_hosts[@]}"; do
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# Remove leading/trailing whitespace
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proxy="${proxy#"${proxy%%[![:space:]]*}"}"
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proxy="${proxy%"${proxy##*[![:space:]]}"}"
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if [[ "$proxy" != "none" && "$proxy" != "NONE" ]]; then
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debug "Processing ProxyJump host: $proxy"
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process_host "$proxy"
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fi
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done
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elif [[ "$line" =~ ^[Ii][Dd][Ee][Nn][Tt][Ii][Tt][Yy][Ff][Ii][Ll][Ee][[:space:]]+([^[:space:]]+) ]]; then
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local identity_file="${BASH_REMATCH[1]}"
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local expanded_path="${identity_file/#\~/$HOME}"
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expanded_path=$(realpath -m "$expanded_path")
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# Resolve relative to SSH_DIR if needed
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if [[ "$expanded_path" != "$SSH_DIR"/* ]]; then
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expanded_path="$SSH_DIR/$identity_file"
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fi
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local rel_path="${expanded_path#$SSH_DIR/}"
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rel_path="${rel_path//../_dotdot_}"
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local store_path="ssh/$host/$rel_path"
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local tmp_key="$tmp_dir/$(basename "$identity_file")"
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# Restore key to temporary location
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if pass show "$store_path" > "$tmp_key" 2>/dev/null; then
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chmod 600 "$tmp_key"
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debug "Restored key $store_path to $tmp_key"
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# Update config to use temporary key
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sed -i "s|${identity_file}|${tmp_key}|g" "$tmp_config"
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else
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echo "Warning: Key $store_path not found in pass"
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fi
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fi
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done <<< "$host_block"
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}
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# Create empty temporary SSH config
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local tmp_config="$tmp_dir/config"
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touch "$tmp_config"
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# Process the main host and its dependencies
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process_host "$hostname"
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# Execute SSH command with temporary config
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echo "Connecting to $hostname..."
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ssh -F "$tmp_config" "$hostname"
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}
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# Main command handler
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case "$1" in
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-v|--verbose)
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VERBOSE=1
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debug "Verbose mode enabled"
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shift
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;;
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esac
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case "$1" in
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import) shift; cmd_import_with_deps "$@" ;;
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import-all) shift; cmd_import_all ;;
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export) shift; cmd_export "$@" ;;
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export-all) shift; cmd_export_all ;;
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connect) shift; cmd_connect "$@" ;;
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*) die "Usage: pass ssh [-v|--verbose] import|import-all|export|export-all|connect [hostname]" ;;
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esac
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