di-detectxswift.sh

#!/usr/bin/env zsh -f
# Purpose: Download and install latest version of DetectX Swift
#
# From:	Timothy J. Luoma
# Mail:	luomat at gmail dot com
# Date:	2015-12-15

NAME="$0:t:r"

INSTALL_TO='/Applications/DetectX Swift.app'

HOMEPAGE="https://sqwarq.com/detectx/"

DOWNLOAD_PAGE="https://sqwarq.com/detectx/"

SUMMARY="DetectX Swift is a lightweight, on-demand dedicated search and troubleshooting tool that can identify malware, adware, keyloggers, potentially unwanted apps and potentially destabilising apps on a Mac."

RELEASE_NOTES_URL='https://s3.amazonaws.com/sqwarq.com/AppCasts/dtxswift_release_notes.html'

if [[ -e "$HOME/.path" ]]
then
	source "$HOME/.path"
fi

XML_FEED='https://s3.amazonaws.com/sqwarq.com/AppCasts/dtxswift.xml'

	# no other version info in feed
INFO=($(curl -sfL "$XML_FEED" \
		| tr -s ' ' '\012' \
		| egrep 'sparkle:version=|url=' \
		| head -2 \
		| sort \
		| awk -F'"' '/^/{print $2}'))

	# "Sparkle" will always come before "url" because of "sort"
LATEST_VERSION="$INFO[1]"

URL="$INFO[2]"

if [ "$INFO" = "" -o "$LATEST_VERSION" = "" -o "$URL" = "" ]
then
	echo "$NAME: Error: bad data received:
	INFO: $INFO
	LATEST_VERSION: $LATEST_VERSION
	URL: $URL
	"

	exit 1
fi

if [[ -e "$INSTALL_TO" ]]
then

	INSTALLED_VERSION=`defaults read "$INSTALL_TO/Contents/Info" CFBundleShortVersionString 2>/dev/null || echo '0'`

	if [[ "$LATEST_VERSION" == "$INSTALLED_VERSION" ]]
	then
		echo "$NAME: Up-To-Date ($INSTALLED_VERSION)"
		exit 0
	fi

	autoload is-at-least

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

	if [ "$?" = "0" ]
	then
		echo "$NAME: Installed version ($INSTALLED_VERSION) is ahead of official version $LATEST_VERSION"
		exit 0
	fi

	echo "$NAME: Outdated (Installed = $INSTALLED_VERSION vs Latest = $LATEST_VERSION)"

fi

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

if (( $+commands[lynx] ))
then

	( echo "$NAME: Release Notes for $INSTALL_TO:t:r:" ;
	curl -sfLS "$RELEASE_NOTES_URL" \
	| awk '/<p id="version">/{i++}i==1' \
	| lynx -dump -nomargins -width='10000' -assume_charset=UTF-8 -pseudo_inlines -stdin ;
	echo "\nSource: <$RELEASE_NOTES_URL>") \
	| tee "$FILENAME:r.txt"

fi

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

curl --continue-at - --progress-bar --fail --location --output "$FILENAME" "$URL"

EXIT="$?"

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

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

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

UNZIP_TO=$(mktemp -d "${TMPDIR-/tmp/}${NAME}-XXXXXXXX")

echo "$NAME: Unzipping '$FILENAME' to '$UNZIP_TO':"

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

EXIT="$?"

if [[ "$EXIT" == "0" ]]
then
	echo "$NAME: Unzip successful"
else
		# failed
	echo "$NAME failed (ditto -xkv '$FILENAME' '$UNZIP_TO')"

	exit 1
fi

if [[ -e "$INSTALL_TO" ]]
then

	pgrep -xq "$INSTALL_TO:t:r" \
	&& LAUNCH='yes' \
	&& osascript -e "tell application \"$INSTALL_TO:t:r\" to quit"

	echo "$NAME: Moving existing (old) '$INSTALL_TO' to '$HOME/.Trash/'."

	mv -vf "$INSTALL_TO" "$HOME/.Trash/$INSTALL_TO:t:r.$INSTALLED_VERSION.app"

	EXIT="$?"

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

		echo "$NAME: failed to move existing $INSTALL_TO to $HOME/.Trash/"

		exit 1
	fi
fi

echo "$NAME: Moving new version of '$INSTALL_TO:t' (from '$UNZIP_TO') to '$INSTALL_TO'."

	# Move the file out of the folder
mv -vn "$UNZIP_TO/$INSTALL_TO:t" "$INSTALL_TO"

EXIT="$?"

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

	echo "$NAME: Successfully installed '$UNZIP_TO/$INSTALL_TO:t' to '$INSTALL_TO'."

else
	echo "$NAME: Failed to move '$UNZIP_TO/$INSTALL_TO:t' to '$INSTALL_TO'."

	exit 1
fi

[[ "$LAUNCH" = "yes" ]] && open -a "$INSTALL_TO"

exit 0
#EOF