Download entire iCloud shared albums icloud-album-download.sh

gistfile1.txt

#!/bin/bash

# requires jq
# arg 1: iCloud web album URL
# arg 2: folder to download into (optional)
#
# Credits: https://gist.github.com/zneak/8f719cd81967e0eb2234897491e051ec
# icloud-album-download.sh

function curl_post_json {
	curl -sH "Content-Type: application/json" -X POST -d "@-" "$@"
}

BASE_API_URL="https://p23-sharedstreams.icloud.com/$(echo $1 | cut -d# -f2)/sharedstreams"

pushd $2 > /dev/null
STREAM=$(echo '{"streamCtag":null}' | curl_post_json "$BASE_API_URL/webstream")
HOST=$(echo $STREAM | jq '.["X-Apple-MMe-Host"]' | cut -c 2- | rev | cut -c 2- | rev)

if [ "$HOST" ]; then
    BASE_API_URL="https://$(echo $HOST)/$(echo $1 | cut -d# -f2)/sharedstreams"
    STREAM=$(echo '{"streamCtag":null}' | curl_post_json "$BASE_API_URL/webstream")
fi

CHECKSUMS=$(echo $STREAM | jq -r '.photos[] | [(.derivatives[] | {size: .fileSize | tonumber, value: .checksum})] | max_by(.size | tonumber).value')

echo $STREAM \
| jq -c "{photoGuids: [.photos[].photoGuid]}" \
| curl_post_json "$BASE_API_URL/webasseturls" \
| jq -r '.items | to_entries[] | "https://" + .value.url_location + .value.url_path + "&" + .key' \
| while read URL; do
	for CHECKSUM in $CHECKSUMS; do
		if echo $URL | grep $CHECKSUM > /dev/null; then
			curl -sOJ $URL &
			break
		fi
	done
done

popd > /dev/null
wait

Works like charm, even 5 years later! Thank you so much!

I know I'm more than 2 years late @SDK665 but in case someone else needs this:
Download the bash file, then open a terminal and navigate to the folder where the script is. First argument is the iCloud Shared Album URL, second argument is the output folder where pictures will be downloaded to. Make sure your output folder exists. So in the terminal type:

cd ~/Downloads
mkdir downloaded_pictures
sh download-icloud-sharedalbum.sh https://www.icloud.com/sharedalbum/#YOUR-FOLDER_ID ~/Downloads/downloaded_pictures