Bash script for downloading images from camera
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296
scripts/shutterlinksort-usr-bin
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296
scripts/shutterlinksort-usr-bin
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#!/bin/bash
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# ======================================================================
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# shutterlinksort
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# ----------------
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# Camera image downloader and organizer for PTP/IP-connected devices.
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#
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# Connects to a camera over network (using gphoto2), downloads new
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# photos, extracts EXIF metadata (date, shutter count), and sorts
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# images into folders by date.
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#
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# Usage:
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# shutterlinksort
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# Dependencies:
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# gphoto2, exiftool, bash
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#
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# Author: James Blackmore (reclusejay)
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# Version: 1.0
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# ======================================================================
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# --- Safety options ---
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# -e : Exit immediately if a command exits with non-zero status.
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# -u : Treat unset variables as an error and exit.
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# -o pipefail : Fail a pipeline if *any* command in it fails.
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set -euo pipefail
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# ============================================================
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# Cleanup handler — runs on interrupt/termination
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# ============================================================
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cleanup() {
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# Disable any special globbing options we enabled
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shopt -u nullglob nocaseglob || true
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# Delete any 0-byte (incomplete) downloads if present
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find "$cam_dl_dir" -type f -size 0 -delete 2>/dev/null || true
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log "Caught interrupt, exiting"
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exit 0
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}
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# Trap cleanup on Ctrl+C, kill, or quit signals
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trap cleanup SIGINT SIGTERM SIGQUIT
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# ============================================================
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# Function: php_get
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# Pulls a config value from the PHP $CONFIG array
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# ============================================================
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php_get() {
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if ! command -v php >/dev/null 2>&1; then
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# fallback to php-cli
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if command -v php-cli >/dev/null 2>&1; then
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php-cli -r "include('../src/includes/config.php'); print \$CONFIG['$1'];"
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else
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echo "Error: Neither 'php' nor 'php-cli' is available."
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exit 1
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fi
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else
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php -r "include('../src/includes/config.php'); print \$CONFIG['$1'];"
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fi
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return 0
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}
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# ============================================================
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# Load all settings from PHP config
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# ============================================================
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cam_uuid=$(php_get "camera_uuid")
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cam_dl_dir=$(php_get "upload_dir")
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cam_sort_dir=$(php_get "sorted_img_dir")
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cam_index_file=$(php_get "index_file")
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cam_xml_url=$(php_get "camera_xml_url")
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cam_ext_format=$(php_get "camera_ext_formats")
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cam_mac=$(php_get "camera_mac")
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g2_port=$(php_get "gphoto2_config_port")
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g2_model=$(php_get "gphoto2_config_model")
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g2_guid=$(php_get "gphoto2_config_guid")
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g2_conf=$(php_get "gphoto2_config_file")
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# Create the index file if missing
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[ -f "$cam_index_file" ] || echo 0 > "$cam_index_file"
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# ============================================================
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# Global variables
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# ============================================================
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debug=true
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ver="v.25.10.1"
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STATUS="INITIALIZING"
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CAM_IP=""
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# ============================================================
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# Function: log
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# Provides timestamped console and syslog logging
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# ============================================================
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log() {
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local msg lev full_msg
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if $debug; then
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msg="${1:-NO MESSAGE!}"
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lev="${2:-info}"
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full_msg="[debug $lev] Version: $ver - $(date +[%Y/%m/%d-%H:%M:%S]) - $msg"
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# Always print to stdout for debugging
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echo "$full_msg"
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# Try syslog first; fallback to a file log if logger fails
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logger -t camera-download-sort "$full_msg" 2>/dev/null || \
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echo "$full_msg" >> /var/log/camera-download-sort.log
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fi
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}
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# ============================================================
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# Function: find_ip_by_mac
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# Locates the IP address of a device by its MAC address
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# ============================================================
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find_ip_by_mac() {
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local mac ip file
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# Normalize MAC to lowercase for comparison
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mac=$(echo "$1" | tr '[:upper:]' '[:lower:]')
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[ -z "$mac" ] && log "No MAC provided" && return 1
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# 1️⃣ Primary source: /proc/net/arp (most reliable)
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ip=$(awk -v mac="$mac" 'NR>1 && tolower($4)==mac {print $1; exit}' /proc/net/arp)
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# 2️⃣ Fallback: BusyBox arp command output
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if [ -z "$ip" ] && command -v arp >/dev/null 2>&1; then
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ip=$(arp | awk -v mac="$mac" 'NR>1 && tolower($4)==mac {print $1; exit}')
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fi
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# 3️⃣ Fallback: dnsmasq lease files
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if [ -z "$ip" ]; then
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for file in /tmp/dhcp.leases /var/lib/misc/dnsmasq.leases; do
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[ -f "$file" ] || continue
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ip=$(awk -v mac="$mac" 'tolower($2)==mac {print $3; exit}' "$file")
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[ -n "$ip" ] && break
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done
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fi
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# If found, set global CAM_IP variable
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if [ -n "$ip" ]; then
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CAM_IP="$ip"
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log "Camera found at $CAM_IP"
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return 0
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fi
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# Not found
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return 1
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}
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# ============================================================
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# Function: is_camera_connected
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# Checks whether the camera’s MAC address is visible
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# ============================================================
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is_camera_connected() {
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if find_ip_by_mac "$cam_mac"; then
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if [ "$STATUS" = "WAITING" ]; then
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# Already in waiting state — skip
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return 1
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fi
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STATUS="CONNECTED"
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return 0
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fi
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STATUS="DISCONNECTED"
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return 1
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}
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# ============================================================
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# Function: download_images
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# Uses gphoto2 (PTP/IP) to pull new images from camera
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# ============================================================
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download_images() {
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local wd="$PWD"
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STATUS="WAITING"
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cd "$cam_dl_dir" || return 1
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# Create gphoto2 config file if it doesn’t exist
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if [ ! -f "$g2_conf" ]; then
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{
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echo "$g2_port$CAM_IP"
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echo "$g2_model"
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echo "$g2_guid$cam_uuid"
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} > "$g2_conf"
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fi
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# Check for gphoto2 availability
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if command -v gphoto2 >/dev/null 2>&1; then
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# Download all new files, skipping ones that already exist
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if gphoto2 --port "ptpip:$CAM_IP" -P --skip-existing; then
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log "Downloaded new images from $CAM_IP"
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cd "$wd" || true
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return 0
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fi
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log "gphoto2 download failed" error
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else
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log "gphoto2 not found — skipping download" warn
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fi
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cd "$wd" || true
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return 1
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}
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# ============================================================
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# Function: sort_images
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# Sorts downloaded images into folders by EXIF date
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# ============================================================
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sort_images() {
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local ext img datetime shuttercount yyyy mm dd timepart hhmmss ext_lower \
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output_dir new_filename new_file uid index
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STATUS="SORTING"
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log "$STATUS"
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# Ensure exiftool exists
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command -v exiftool >/dev/null 2>&1 || {
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log "exiftool missing — cannot sort" error
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return 1
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}
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# Get current image index number
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index=$(cat "$cam_index_file")
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# Loop over each configured image extension (e.g. JPG ARW)
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for ext in $cam_ext_format; do
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# Enable flexible globbing (case-insensitive, no literal fail)
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shopt -s nullglob nocaseglob
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# Iterate through each matching file
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for img in "$cam_dl_dir"/*."$ext"; do
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# Pull EXIF date and shutter count
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readarray -t exif_data < <(exiftool -s -s -s -DateTimeOriginal -ShutterCount "$img")
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datetime="${exif_data[0]:-0000:00:00 00:00:00}"
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shuttercount="${exif_data[1]:-}"
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log "Processing $img (index $index)"
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# Generate a unique ID if no shuttercount found
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if [ -z "$shuttercount" ]; then
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uid="rn${RANDOM}idx${index}"
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log "No shuttercount in $img, uid=$uid"
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else
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uid="sc${shuttercount}idx${index}"
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log "Shuttercount=$shuttercount uid=$uid"
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fi
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# Parse EXIF date into components
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yyyy=$(echo "$datetime" | cut -d':' -f1)
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mm=$(echo "$datetime" | cut -d':' -f2)
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dd=$(echo "$datetime" | cut -d':' -f3 | cut -d' ' -f1)
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timepart=$(echo "$datetime" | cut -d' ' -f2)
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hhmmss=$(echo "$timepart" | tr -d ':')
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# Normalize extension to lowercase
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ext_lower=${ext,,}
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# Build destination folder structure
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output_dir="$cam_sort_dir/$ext_lower/$yyyy/$mm/$dd"
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mkdir -p "$output_dir" || { log "mkdir failed: $output_dir" error; return 1; }
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# Construct new filename
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new_filename="${hhmmss}_${uid}.${ext_lower}"
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new_file="$output_dir/$new_filename"
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log "Moving $img -> $new_file"
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# Move and increment index
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if mv "$img" "$new_file"; then
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index=$((index + 1))
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else
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log "Failed to move $img" error
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fi
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done
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# Update index file after processing each extension type
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printf '%s\n' "$index" > "$cam_index_file"
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done
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STATUS="DONE"
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log "$STATUS"
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return 0
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}
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# ============================================================
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# Main loop — runs forever
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# ============================================================
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log "Camera script started"
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while :; do
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# If camera detected and not already downloading/sorting
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if is_camera_connected && [ "$STATUS" != "WAITING" ] && [ "$STATUS" != "SORTING" ]; then
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download_images || log "Download step failed" error
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# If camera disconnected, begin sorting
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elif [ "$STATUS" = "DISCONNECTED" ]; then
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sort_images || log "Sort step failed" error
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fi
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# Avoid hammering system; check every 2 seconds
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sleep 2
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done
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