If you customize one line in this script, it will download and install / update Skype Call Recorder.

di-skypecallrecorder.sh

#!/usr/bin/env zsh -f
# Purpose: Download and install the latest version of Skype Call Recorder
#
# From:	Timothy J. Luoma
# Mail:	luomat at gmail dot com
# Date:	2018-08-22


	# you MUST customize this URL to be your URL from ECamm
	# it ends with your email address (URL encoded) and a 6 digit personal code
	# replace USER and EXAMPLE and COM with your email address
	# replace XXXXXX with your code from when you bought Skype Call Recorder
PRIVATE_URL='https://www.ecamm.com/cgi-bin/customercenter?u=USER%40EXAMPLE%2ECOM&c=XXXXXX'



## you should not have to change anything below this line



	# This is the public RSS feed for call recorder which we use for release notes
XML_FEED='https://www.ecamm.com/appcasts/callrecorder.xml'

	# this helps curl pretend that it's Safari
UA='Mozilla/5.0 (Macintosh; Intel Mac OS X 11_0) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.1 Safari/605.1.15'

if [[ -e "$HOME/.path" ]]
then
	source "$HOME/.path"
else
	PATH='/usr/local/scripts:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin'
fi

	# this will get us the actual URL for the actual download
URL=$(curl --user-agent "$UA" -sfLS "$PRIVATE_URL" | tr '"' '\012' | egrep -i '^https://www.ecamm.com/.*/CallRecorder.*\.zip')

	# we parse out the version number from that URL
LATEST_VERSION=$(echo "$URL:t:r" | tr -dc '[0-9]\.')

	# this is the URL to the release notes
RELEASE_NOTES_URL=$(curl --user-agent "$UA" -sfL "$XML_FEED" \
	| fgrep '<sparkle:releaseNotesLink>' \
	| head -1 \
	| sed 's#.*<sparkle:releaseNotesLink>##g ; s#</sparkle:releaseNotesLink>##g')


if [[ "$LATEST_VERSION" == ""  ]]
then
	echo "Unable to determine latest version of Skype Call Recorder"
	exit 0
fi


if [[ "$URL" == "" ]]
then
	echo "Unable to determine actual URL for Skype Call Recorder"
	exit 0
fi

	# this is where Call Recorder gets installed to
INSTALL_TO="/Library/Application Support/EcammVideoPlugins/CallRecorder.plugin"

	## if Call Recorder is already installed
if [[ -e "$INSTALL_TO" ]]
then

	INSTALLED_VERSION=$(defaults read "${INSTALL_TO}/Contents/Info" CFBundleVersion)

	autoload is-at-least

	is-at-least "$LATEST_VERSION" "$INSTALLED_VERSION"

	VERSION_COMPARE="$?"

	if [[ "$VERSION_COMPARE" == "0" ]]
	then
		echo "Call Recorder Up-To-Date ($INSTALLED_VERSION)"
		exit 0
	fi

fi

FILENAME="$HOME/Downloads/SkypeCallRecorder-${LATEST_VERSION}.zip"

if (( $+commands[lynx] ))
then
		# if you have Lynx installed, this will show you release notes
	(lynx -dump -nomargins -width='10000' -assume_charset=UTF-8 -pseudo_inlines "$RELEASE_NOTES_URL" ;
	 echo "\nSource: <$RELEASE_NOTES_URL>") | tee "$FILENAME:r.txt"
else
		# if you don't have Lynx, a URL to the release notes
	echo "Release Notes can be found at $RELEASE_NOTES_URL"  | tee "$FILENAME:r.txt"
fi


	# The server doesn't do continued downloads, so if we find something where our download is supposed to go,
	# we need to test it to see if it is a) a working zip file -- which probably means that they've previously
	# downloaded the file, so we don't need to download it again, or b) an incomplete zip -- which probably
	# means that the file download has started previously, but did not complete.

if [[ -e "$FILENAME" ]]
then
	(command unzip -qqt "$FILENAME" 2>&1) >/dev/null

	EXIT="$?"

	if [ "$EXIT" = "0" ]
	then
		# echo "$NAME: $FILENAME already exists as valid .zip. Using it."
		:

	else

		# echo "'$FILENAME' exists but is not a valid .zip file. Renaming it and re-downloading it."

			# Really, we should just delete / trash the file, but I'm loathe to do that on someone else's computer.
			# so we'll rename it and let them deal with it.

		zmodload zsh/datetime

		TIME=`strftime "%Y-%m-%d--%H.%M.%S" "$EPOCHSECONDS"`

		function timestamp { strftime "%Y-%m-%d--%H.%M.%S" "$EPOCHSECONDS" }

		mv -vn "$FILENAME" "$HOME/Downloads/SkypeCallRecorder-BROKEN-EXAMINE.${TIME}.${LATEST_VERSION}.zip"

		exec "$0"

	fi
fi

	# If we don't have the file, download the file
if [[ ! -e "$FILENAME" ]]
then

	# echo "$NAME: Downloading '$URL' to '$FILENAME':"

	curl --silent -S --continue-at - --fail --location --output "$FILENAME" "$URL"

	EXIT="$?"

		## exit 22 means 'the file was already fully downloaded'
	[ "$EXIT" != "0" -a "$EXIT" != "22" ] && echo "Download failed (EXIT = $EXIT)" && exit 0

	[[ ! -e "$FILENAME" ]] && echo "$FILENAME does not exist." && exit 0

	[[ ! -s "$FILENAME" ]] && echo "$FILENAME is zero bytes." && rm -f "$FILENAME" && exit 0

fi

	# Now that we have it downloaded, lets unpack it
UNZIP_TO=$(mktemp -d "${TMPDIR-/tmp/}${NAME}-XXXXXXXX")

ditto -xk --noqtn "$FILENAME" "$UNZIP_TO"

EXIT="$?"

if [[ "$EXIT" != "0" ]]
then

	echo "Failed to unzip '$FILENAME'"

		# show it in Finder
	open -R "$FILENAME"

	exit 0
fi

	# we look for the installer app in the folder we unpacked it to
APP=$(find "$UNZIP_TO" -maxdepth 2 -type d -iname 'Install Call Recorder.app' -print)

if [[ "$APP" == "" ]]
then
	echo "Failed to find 'Install Call Recorder.app' in '$UNZIP_TO'"
	exit 0
fi

	# the app is an installer which needs user intervention, so the most we can do is just open it
	# if it doesn't open, at least reveal it in the Finder
open -W "$APP" || open -R "$APP"

exit 0
#

Updated 2020-10-10 with some better error messaging more suitable for us with Keyboard Maestro.

See https://forum.keyboardmaestro.com/t/call-recorder-update-when-skype-quits-macro-v9-0-6/19812 for more details on how to use this with Keyboard Maestro.