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Configure Tomcat max header size through environment variable #197

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1 change: 1 addition & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,7 @@ If you're running `Docker Toolbox` then start a web browser session to <http://1
* **COUNTRY_CODE**: Country code to be used as certificate "C" record; default `FR`
* **KEYSTORE_PASS**: ".keystore"/.jks" store password; default `V3ry1nS3cur3P4ssw0rd`
* **KEY_PASS**: Private key password; default `<ref:KEYSTORE_PASS>`
* **TOMCAT_REQUEST_HEADER_LIMIT**: Request header limit for the Tomcat Server

## HTTPS SSL Certificate via Let's Encrypt

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9 changes: 9 additions & 0 deletions main/docker-entrypoint.sh
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Expand Up @@ -58,6 +58,14 @@ if [ -n "$DRAWIO_SERVER_URL" ] && [ "$CONTEXT_PATH" != "/" ]; then
else
echo "Tomcat context remains at root '/'"
fi

# Update the maxHTTPHeaderSize in Tomcat for the HTTP endpoint
echo "Updating Tomcat max header size to '${TOMCAT_REQUEST_HEADER_LIMIT:-8192}'"
xmlstarlet ed -P -S -L \
-i '/Server/Service/Connector[@port="8080"]' -t attr -n 'maxHttpHeaderSize' -v "${TOMCAT_REQUEST_HEADER_LIMIT:-8192}" \
conf/server.xml


#DRAWIO_VIEWER_URL is path to the viewer js, e.g. https://www.example.com/js/viewer.min.js
echo "window.DRAWIO_VIEWER_URL = '${DRAWIO_VIEWER_URL}';" >> $CATALINA_HOME/webapps/draw/js/PreConfig.js
#DRAWIO_LIGHTBOX_URL Replace with your lightbox URL, eg. https://www.example.com
Expand Down Expand Up @@ -189,6 +197,7 @@ if [ -f $CATALINA_HOME/.keystore ] && [ -z $VAR ]; then
-i "/Server/Service/${UUID}" -t 'attr' -n 'KeystoreFile' -v "$CATALINA_HOME/.keystore" \
-i "/Server/Service/${UUID}" -t 'attr' -n 'KeystorePass' -v "${KEY_PASS}" \
-i "/Server/Service/${UUID}" -t 'attr' -n 'defaultSSLHostConfigName' -v "${PUBLIC_DNS:-'draw.example.com'}" \
-i "/Server/Service/${UUID}" -t 'attr' -n 'maxHttpHeaderSize' -v "${TOMCAT_REQUEST_HEADER_LIMIT:-8192}" \
-s "/Server/Service/${UUID}" -t 'elem' -n 'SSLHostConfig' \
-i "/Server/Service/${UUID}/SSLHostConfig" -t 'attr' -n 'hostName' -v "${PUBLIC_DNS:-'draw.example.com'}" \
-i "/Server/Service/${UUID}/SSLHostConfig" -t 'attr' -n 'protocols' -v 'TLSv1.2' \
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