Merge pull request #4 from adn77/MFA

Added MFA

README.md

@@ -13,6 +13,7 @@ ALEXA     - the URL you would use for the Alexa Web App
 CURL      - location of your cURL binary
 OPTS      - any cURL options you require
 TMP       - location of the temp dir
+OATHTOOL  - command line for oathtool MFA
 ```
 You will very likely want to set the language to:
 ```
@@ -50,10 +51,15 @@ alexa-remote-control [-d <device>|ALL] -e <pause|play|next|prev|fwd|rwd|shuffle|
  
 There's also a "plain" version, which lacks some functionality (-i, -p, -P, -S and no radio station names and no routines) but doesn't require 'jq' for JSON processing.
 
+In order to use MFA, one needs to obtain the MFA_SECRET from Amazon account:
+1. You should have MFA using an App already working before proceeding
+1. Add a new app
+1. When presented with the QR-code select "can't scan code"
+1. You will be presented with the MFA shared secret, something like `1234 5678 9ABC DEFG HIJK LMNO PQRS TUVW XYZ0 1234 5678 9ABC DEFG`
+1. Now you have to generate a valid response code via `oathtool -b --totp "<MFA shared secret from above>"` and enter that in the web form
+1. Going from here the MFA shared secret becomes the MFA_SECRET for the alexa_remote_control script
+*Treat that MFA_SCECRET just like your password - DO NOT share it anywhere!!!*
+
+It is assumed that MFA secured accounts are less likely to get a captcha response during login - that's why MFA might yield better results if the plain username/password didn't work for you.
+
 http://blog.loetzimmer.de/2017/10/amazon-alexa-hort-auf-die-shell-echo.html
-
-
-
-
-
-

alexa_remote_control.sh

@@ -41,6 +41,8 @@
 # 2019-02-14: v0.12a reduced the number of replaced characters for TTS and automation
 # 2019-06-18: v0.12b fixed CSRF
 # 2019-06-28: v0.12c properly fixed CSRF
+# 2019-07-08: v0.13 added support for Multi-Factor Authentication
+#               (thanks to rich-gepp https://github.com/rich-gepp)
 #
 ###
 #
@@ -48,14 +50,18 @@
 # - requires cURL for web communication
 # - (GNU) sed and awk for extraction
 # - jq as command line JSON parser (optional for the fancy bits)
+# - oathtool as OATH one-time password tool (optional for two-factor authentication)
 #
 ##########################################
 
 SET_EMAIL='amazon_account@email.address'
 SET_PASSWORD='Very_Secret_Amazon_Account_Password'
+SET_MFA_SECRET=''
+# something like:
+#  1234 5678 9ABC DEFG HIJK LMNO PQRS TUVW XYZ0 1234 5678 9ABC DEFG
 
-SET_LANGUAGE="de,en-US;q=0.7,en;q=0.3"
+SET_LANGUAGE='de,en-US;q=0.7,en;q=0.3'
-#SET_LANGUAGE="en-US"
+#SET_LANGUAGE='en-US'
 
 SET_TTS_LOCALE='de-DE'
 
@@ -79,6 +85,9 @@ SET_OPTS='--compressed --http1.1'
 SET_BROWSER='Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:1.0) bash-script/1.0'
 #SET_BROWSER='Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:65.0) Gecko/20100101 Firefox/65.0'
 
+# oathtool command line tool
+SET_OATHTOOL='/usr/bin/oathtool'
+
 # tmp path
 SET_TMP="/tmp"
 
@@ -89,6 +98,7 @@ SET_TMP="/tmp"
 # retrieving environment variables if any are set
 EMAIL=${EMAIL:-$SET_EMAIL}
 PASSWORD=${PASSWORD:-$SET_PASSWORD}
+MFA_SECRET=${MFA_SECRET:-$SET_MFA_SECRET}
 AMAZON=${AMAZON:-$SET_AMAZON}
 ALEXA=${ALEXA:-$SET_ALEXA}
 LANGUAGE=${LANGUAGE:-$SET_LANGUAGE}
@@ -97,6 +107,7 @@ CURL=${CURL:-$SET_CURL}
 OPTS=${OPTS:-$SET_OPTS}
 TTS_LOCALE=${TTS_LOCALE:-$SET_TTS_LOCALE}
 TMP=${TMP:-$SET_TMP}
+OATHTOOL=${OOATHTOOL:-$SET_OATHTOOL}
 
 COOKIE="${TMP}/.alexa.cookie"
 DEVLIST="${TMP}/.alexa.devicelist.json"
@@ -399,6 +410,14 @@ ${CURL} ${OPTS} -s -D "${TMP}/.alexa.header" -c ${COOKIE} -b ${COOKIE} -A "${BRO
 ${CURL} ${OPTS} -s -c ${COOKIE} -b ${COOKIE} -A "${BROWSER}" -H "Accept-Language: ${LANGUAGE}" -H "DNT: 1" -H "Connection: keep-alive" -H "Upgrade-Insecure-Requests: 1" -L\
  -H "$(grep 'Location: ' ${TMP}/.alexa.header | sed 's/Location: /Referer: /')" -d "@${TMP}/.alexa.postdata" https://www.${AMAZON}/ap/signin | grep "hidden" | sed 's/hidden/\n/g' | grep "value=\"" | sed -r 's/^.*name="([^"]+)".*value="([^"]+)".*/\1=\2\&/g' > "${TMP}/.alexa.postdata2"
 
+#
+# add OTP if using MFA
+#
+if [ -n "${MFA_SECRET}" ] ; then
+	OTP=$(${OATHTOOL} -b --totp "${MFA_SECRET}")
+	PASSWORD="${PASSWORD}${OTP}"
+fi
+
 #
 # login with filled out form
 #  !!! referer now contains session in URL
@@ -413,6 +432,11 @@ if [ -z "$(grep 'Location: https://alexa.*html' ${TMP}/.alexa.header2)" ] ; then
 	echo " make sure to have all Amazon related cookies deleted and Javascript disabled!"
 	echo
 	echo " (For more information have a look at ${TMP}/.alexa.login)"
+	echo
+	echo " To avoid issues with captcha, try using Multi-Factor Authentication."
+	echo " To do so, first set up Two-Step Verification on your Amazon account, then"
+	echo " configure this script (or the environment) with your MFA secret."
+	echo " Support for Multi-Factor Authentication requires 'oathtool' to be installed."
 
 	rm -f ${COOKIE}
 	rm -f "${TMP}/.alexa.header"
@@ -547,7 +571,7 @@ if [ -n "${SEQUENCECMD}" ]
 			ALEXACMD="{\"behaviorId\":\"PREVIEW\",\"sequenceJson\":\"{\\\"@type\\\":\\\"com.amazon.alexa.behaviors.model.Sequence\\\",\\\"startNode\\\":{\\\"@type\\\":\\\"com.amazon.alexa.behaviors.model.OpaquePayloadOperationNode\\\",\\\"type\\\":\\\"${SEQUENCECMD}\\\",\\\"operationPayload\\\":{\\\"deviceType\\\":\\\"${DEVICETYPE}\\\",\\\"deviceSerialNumber\\\":\\\"${DEVICESERIALNUMBER}\\\",\\\"locale\\\":\\\"${TTS_LOCALE}\\\",\\\"customerId\\\":\\\"${MEDIAOWNERCUSTOMERID}\\\"${TTS}}}}\",\"status\":\"ENABLED\"}"
 		fi
 
-		# Due to some weird shell-escape-behavior the command has t be written to a file before POSTing it
+		# Due to some weird shell-escape-behavior the command has to be written to a file before POSTing it
 		echo $ALEXACMD > "${TMP}/.alexa.cmd"
 
 		${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\

alexa_remote_control_plain.sh

@@ -3,7 +3,7 @@
 # Amazon Alexa Remote Control (PLAIN shell)
 #  alex(at)loetzimmer.de
 #
-# 2019-06-28: v0.12c (for updates see http://blog.loetzimmer.de/2017/10/amazon-alexa-hort-auf-die-shell-echo.html)
+# 2019-07-08: v0.13 (for updates see http://blog.loetzimmer.de/2017/10/amazon-alexa-hort-auf-die-shell-echo.html)
 #
 ###
 #
@@ -13,12 +13,14 @@
 #
 ##########################################
 
-
 SET_EMAIL='amazon_account@email.address'
 SET_PASSWORD='Very_Secret_Amazon_Account_Password'
+SET_MFA_SECRET=''
+# something like:
+#  1234 5678 9ABC DEFG HIJK LMNO PQRS TUVW XYZ0 1234 5678 9ABC DEFG
 
-SET_LANGUAGE="de,en-US;q=0.7,en;q=0.3"
+SET_LANGUAGE='de,en-US;q=0.7,en;q=0.3'
-#SET_LANGUAGE="en-US"
+#SET_LANGUAGE='en-US'
 
 SET_TTS_LOCALE='de-DE'
 
@@ -42,6 +44,9 @@ SET_OPTS='--compressed --http1.1'
 SET_BROWSER='Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:1.0) bash-script/1.0'
 #SET_BROWSER='Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:65.0) Gecko/20100101 Firefox/65.0'
 
+# oathtool command line tool
+SET_OATHTOOL='/usr/bin/oathtool'
+
 # tmp path
 SET_TMP="/tmp"
 
@@ -52,6 +57,7 @@ SET_TMP="/tmp"
 # retrieving environment variables if any are set
 EMAIL=${EMAIL:-$SET_EMAIL}
 PASSWORD=${PASSWORD:-$SET_PASSWORD}
+MFA_SECRET=${MFA_SECRET:-$SET_MFA_SECRET}
 AMAZON=${AMAZON:-$SET_AMAZON}
 ALEXA=${ALEXA:-$SET_ALEXA}
 LANGUAGE=${LANGUAGE:-$SET_LANGUAGE}
@@ -60,6 +66,7 @@ CURL=${CURL:-$SET_CURL}
 OPTS=${OPTS:-$SET_OPTS}
 TTS_LOCALE=${TTS_LOCALE:-$SET_TTS_LOCALE}
 TMP=${TMP:-$SET_TMP}
+OATHTOOL=${OOATHTOOL:-$SET_OATHTOOL}
 
 COOKIE="${TMP}/.alexa.cookie"
 DEVLIST="${TMP}/.alexa.devicelist.json"
@@ -343,6 +350,14 @@ ${CURL} ${OPTS} -s -D "${TMP}/.alexa.header" -c ${COOKIE} -b ${COOKIE} -A "${BRO
 ${CURL} ${OPTS} -s -c ${COOKIE} -b ${COOKIE} -A "${BROWSER}" -H "Accept-Language: ${LANGUAGE}" -H "DNT: 1" -H "Connection: keep-alive" -H "Upgrade-Insecure-Requests: 1" -L\
  -H "$(grep 'Location: ' ${TMP}/.alexa.header | sed 's/Location: /Referer: /')" -d "@${TMP}/.alexa.postdata" https://www.${AMAZON}/ap/signin | grep "hidden" | sed 's/hidden/\n/g' | grep "value=\"" | sed -r 's/^.*name="([^"]+)".*value="([^"]+)".*/\1=\2\&/g' > "${TMP}/.alexa.postdata2"
 
+#
+# add OTP if using MFA
+#
+if [ -n "${MFA_SECRET}" ] ; then
+	OTP=$(${OATHTOOL} -b --totp "${MFA_SECRET}")
+	PASSWORD="${PASSWORD}${OTP}"
+fi
+
 #
 # login with filled out form
 #  !!! referer now contains session in URL
@@ -357,6 +372,11 @@ if [ -z "$(grep 'Location: https://alexa.*html' ${TMP}/.alexa.header2)" ] ; then
 	echo " make sure to have all Amazon related cookies deleted and Javascript disabled!"
 	echo
 	echo " (For more information have a look at ${TMP}/.alexa.login)"
+	echo
+	echo " To avoid issues with captcha, try using Multi-Factor Authentication."
+	echo " To do so, first set up Two-Step Verification on your Amazon account, then"
+	echo " configure this script (or the environment) with your MFA secret."
+	echo " Support for Multi-Factor Authentication requires 'oathtool' to be installed."
 
 	rm -f ${COOKIE}
 	rm -f "${TMP}/.alexa.header"
@@ -550,7 +570,7 @@ if [ -n "${SEQUENCECMD}" ]
 	then
 		ALEXACMD="{\"behaviorId\":\"PREVIEW\",\"sequenceJson\":\"{\\\"@type\\\":\\\"com.amazon.alexa.behaviors.model.Sequence\\\",\\\"startNode\\\":{\\\"@type\\\":\\\"com.amazon.alexa.behaviors.model.OpaquePayloadOperationNode\\\",\\\"type\\\":\\\"${SEQUENCECMD}\\\",\\\"operationPayload\\\":{\\\"deviceType\\\":\\\"${DEVICETYPE}\\\",\\\"deviceSerialNumber\\\":\\\"${DEVICESERIALNUMBER}\\\",\\\"locale\\\":\\\"${TTS_LOCALE}\\\",\\\"customerId\\\":\\\"${MEDIAOWNERCUSTOMERID}\\\"${TTS}}}}\",\"status\":\"ENABLED\"}"
 
-		# Due to some weird shell-escape-behavior the command has t be written to a file before POSTing it
+		# Due to some weird shell-escape-behavior the command has to be written to a file before POSTing it
 		echo $ALEXACMD > "${TMP}/.alexa.cmd"
 		
 		${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\