This script tries to get warranty information for Apple product. This script has not been tested with all Apple devices, only with Mac computers and some iPhone models.

check_warranty.sh

#!/bin/bash

# check_warranty.sh
#
# This script tries to get warranty information for Apple product
#
# This script has not been tested with all Apple devices, only with Mac computers and some iPhone models
#
# Script accepts a valid serial as argument $1
# If argument $1 is not provided then the serial of current computer is used
#
###
# DISCLAIMER: This script may or may not suit for your purposes, no warranties whatsoever
# Script's functionality may break when Apple decides to change their websites at:
# https://selfsolve.apple.com/wcResults.do
# http://support-sp.apple.com/sp/product?
#
###
# This is based on @glarizza's and @chilcote scripts:¬
#              https://github.com/glarizza/scripts/blob/master/ruby/warranty.rb¬
#              https://github.com/chilcote/warranty/blob/master/warranty.rb
#
###
# version 2013-03-13 by Mika Viikki (aka MiqViq) 2013-03-13
###

# unregistered response:
# window.location.href='/RegisterProduct.do?productRegister=Y&country=' + 'USA' + '&id='+ 'W86073UNVJ1';
# https://selfsolve.apple.com/RegisterProduct.do?productRegister=Y&country=USA&id=W86073UNVJ1

echo "Running '$(basename $0)'..."

if [ "${1}" == "" ]; then
	checkSerial=$(ioreg -l | grep -i 'ioplatformserialnumber' | awk -F'"' '{ print $4 }')
else
	checkSerial="${1}"
fi

if [ "" == "${checkSerial}" ]; then
	echo "ERROR: could not get serial"
	exit 1
elif echo "${checkSerial}" | grep -q "SystemSerialNumb"; then
	echo "ERROR: motherboard is not serialized properly"
	exit 1
fi

echo "Checking warranty status for serial: '${checkSerial}'..."

# get serial snippet for model
serLength=$(printf "${checkSerial}" | wc -c)

if [ ${serLength} -eq 12 ] ; then
	snippet=$(echo "${checkSerial}" | rev | cut -b-4 | rev)
else
	snippet=$(echo "${checkSerial}" | rev | cut -b-3 | rev)
fi

# get response html
getResponseBody=$(curl -sS -k -t3 -m6 "https://selfsolve.apple.com/wcResults.do?sn=${checkSerial}&Continue=Continue&cn=&locale=&caller=&num=0" 2>/dev/null)

if [ "" == "${getResponseBody}" ]; then
	echo "ERROR: not proper response from Apple!"
	exit 1
fi

# check if serial was invalid
if echo "${getResponseBody}" | grep -oqw "invalidserialnumber"; then
	echo "ERROR: invalid serial number!"
	exit 1
fi

# get model info
getModelInfo=$(curl -sS -k -t3 -m6 "http://support-sp.apple.com/sp/product?cc=${snippet}&?lang=en_US" | awk -F 'configCode>' '{print $2}' | cut -d '<' -f1)

if [ "${getModelInfo}" == "" ]; then
	getModelInfo="???"
fi

echo "SERIAL NUMBER: ${checkSerial}"

echo "MODEL INFO: ${getModelInfo}"

# get registration status 
getRegistrationStatus=$(echo "${getResponseBody}" | awk '/warrantyPage.setClassAndShow/,/;/' | grep -oqw "'green'" && echo 'Registered')
echo "REGISTRATION STATUS: ${getRegistrationStatus}"

#warrantyPage.setClassAndShow('registration', 'green', 'registration-true');

# get hardware warranty status
getWarrantyStatusHW=$(echo "${getResponseBody}" | awk '/warrantyPage.warrantycheck.displayHWSupportInfo/,/;/' | grep -ow 'Active' || echo 'Expired')
echo "WARRANTY STATUS: ${getWarrantyStatusHW}"

#warrantyPage.warrantycheck.displayHWSupportInfo(true, 'Repairs and Service Coverage: Active', 'Your product is covered for eligible hardware repairs and service under a custom agreement. <br/>For more information about your coverage, please <a href="http://support.apple.com/kb/HE57">contact us</a>.<br/>Estimated Expiration Date: November 5, 2016<br/><a href="http://support.apple.com/kb/he44">Learn about Apple&#039;s coverage information for your product.</a>', 'https://selfsolve.apple.com/GetWarranty.do?sn=${checkSerial}');

# get active warranty info
if [ "Active" == "${getWarrantyStatusHW}" ]; then

	getExpirationDate=$(echo "${getResponseBody}" | awk '/warrantyPage.warrantycheck.displayHWSupportInfo/,/;/' | grep -i 'Estimated Expiration Date:' | awk -F 'Date: ' '{print $NF}' | cut -d'<' -f1)

	# transform exp. date to ISO 8601 YYYY-MM-DD
	iso8601ExpDate=$(perl -e 'use strict; use warnings; use Time::Piece; use POSIX qw(locale_h); setlocale(LC_ALL, "en_US.UTF-8"); my $t = Time::Piece->strptime("$ARGV[0]", "%B %d, %Y"); print $t->strftime("%F\n");' "$getExpirationDate" 2>/dev/null)
	
	if [ ! "" == "${iso8601ExpDate}" ]; then
		showExpirationDate=${iso8601ExpDate}
	else
		showExpirationDate=${getExpirationDate}
	fi
	
	echo "WARRANTY EXPIRES ON: ${showExpirationDate}"
	
	getWarrantyType=$(echo "${getResponseBody}" | awk '/warrantyPage.warrantycheck.displayHWSupportInfo/,/;/' | egrep -iow 'custom agreement|applecare protection plan|limited warranty' | perl -pe 's/\w+/\u$&/g')

	echo "WARRANTY TYPE: ${getWarrantyType}"
fi

# get telephone support status
getPhoneSupportStatus=$(echo "${getResponseBody}" | awk '/warrantyPage.warrantycheck.displayPHSupportInfo/,/;/' | grep -ow 'Active' || echo 'Expired')
echo "PHONE SUPPORT STATUS: ${getPhoneSupportStatus}"

#warrantyPage.warrantycheck.displayPHSupportInfo( true, 'Telephone Technical Support: Active', 'Your product is eligible for telephone technical support under a custom agreement. <br/>For more information about your coverage, please <a href="http://support.apple.com/kb/HE57">contact us</a>.<br/>Estimated Expiration Date: November 5, 2016', 'https://expresslane.apple.com/GetproductgroupList.do?serialno=${checkSerial}');