di-cocoapacketanalyzer.sh

#!/usr/bin/env zsh -f
# Purpose: Download and install the latest version of CocaPacketAnalyzer
#
# From:	Timothy J. Luoma
# Mail:	luomat at gmail dot com
# Date:	2016-03-19; 2019-07-31

NAME="$0:t:r"

INSTALL_TO='/Applications/CocoaPacketAnalyzer.app'

HOMEPAGE="http://www.tastycocoabytes.com/cpa/"

DOWNLOAD_PAGE="http://www.tastycocoabytes.com/cpa/"

SUMMARY="Cocoa Packet Analyzer is a native Mac OS X implementation of a network protocol analyzer and packet sniffer. CPA supports the industry-standard PCAP packet capture format for reading, capturing and writing packet trace files."

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

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

# OLD (but identical?)
# XML_FEED="http://www.tastycocoabytes.com/cpa/updates/appcasting.php"

XML_FEED='http://www.tastycocoabytes.com/cpa/updates/appcast.xml'

INFO=($(curl -sfL "$XML_FEED" \
		| tr -s ' ' '\012' \
		| egrep 'sparkle:version=|url=' \
		| tail -2 \
		| sort \
		| awk -F'"' '/^/{print $2}'))

	# "Sparkle" will always come before "url" because of "sort"
LATEST_VERSION="$INFO[1]"
URL="$INFO[2]"

	# If any of these are blank, we should not continue
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 [[ "$LATEST_VERSION" == "$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: Up-To-Date (Installed = $INSTALLED_VERSION vs Latest = $LATEST_VERSION)"
	exit 0
fi

echo "$NAME: Outdated (Installed = $INSTALLED_VERSION vs Latest = $LATEST_VERSION)"

	if [[ -e "$INSTALL_TO/Contents/_MASReceipt/receipt" ]]
	then
		echo "$NAME: $INSTALL_TO was installed from the Mac App Store and cannot be updated by this script."
		echo "	See <https://apps.apple.com/us/app/cocoa-packet-analyzer/id418357707?mt=12> or"
		echo "	<macappstore://apps.apple.com/us/app/cocoa-packet-analyzer/id418357707>"
		echo "	Please use the App Store app to update it: <macappstore://showUpdatesPage?scan=true>"
		exit 0
	fi

FILENAME="$HOME/Downloads/$INSTALL_TO:t:r-${LATEST_VERSION}.zip"

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

	(curl -sfLS 'http://www.tastycocoabytes.com/cpa/history.php' \
	| awk '/<ul>/{i++}i==1' \
	| sed '$d' \
	| lynx -dump -nomargins -width='10000' -assume_charset=UTF-8 -pseudo_inlines -nonumbers -nolist -stdin ; \
		echo "\nURL: $URL\nSource: http://www.tastycocoabytes.com/cpa/history.php\n" \
	 ) | tee "$FILENAME:r.txt"

fi

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

curl --continue-at - --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

(cd "$FILENAME:h" ; echo "\nLocal sha256:" ; shasum -a 256 "$FILENAME:t" ) >>| "$FILENAME:r.txt"

## make sure that the .zip is valid before we proceed
(command unzip -l "$FILENAME" 2>&1 )>/dev/null

EXIT="$?"

if [ "$EXIT" = "0" ]
then
	echo "$NAME: '$FILENAME' is a valid zip file."

else
	echo "$NAME: '$FILENAME' is an invalid zip file (\$EXIT = $EXIT)"

	mv -fv "$FILENAME" "$HOME/.Trash/"

	mv -fv "$FILENAME:r".* "$HOME/.Trash/"

	exit 0

fi

## unzip to a temporary directory
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
	# Note the extra "$INSTALL_TO:t:r" which is not usually necessary
mv -vn "$UNZIP_TO/$INSTALL_TO:t:r/$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