[BUG] Custom URI are deleted on subsequent edit

[Hexabit GmbH]

Problem Description

We have a custom URL protocol (hxcrypt://) which launches an application on our side. First it works, but on a subsequent edit of this page, the <a ... /> tag is still there, but the href attribute is missing.

Do we need to register the URL somewhere in the system?

Failed Workarounds

• Not setting a link name
• Link inside or outside of a table
• Escaping the hash in the url

Steps to Reproduce

Create a Web Link on a page with the following parameters:

URL: hxcrypt://eyJTYWx0IjoiM0V5dC9hc2IyWENVVzFIOEFSRTVueDdiTjdDeEEwT254YUE5ZFhjWFlMa1FPTkVLVlVwYWdscXFDcDBEWHV2dE41dERNM01OU1NLRkhkYUFMbjVicFE9PSIsIkNyeXB0b0hhc2giOiJxTUk2Z1g3NnAvZ1NUUjdqUUlZam13PT0ifQ==

Name: Test

Save the page. Then edit the page, change something in the document, then save again. The web link is now broken.

Version Information

Confluence-Version	6.0.4
Build-Nummer	7102

Betriebssystem	Linux 3.16.0-4-amd64
Betriebssystemarchitektur	amd64
Anwendungsserver	Apache Tomcat/8.0.39
Servlet-Version	3.1
Java-Version	1.8.0_112
Java-Hersteller	Oracle Corporation
JVM-Version	1.8
JVM-Hersteller	Oracle Corporation
JVM-Implementierungsversion	25.112-b15
Java Runtime	Java(TM) SE Runtime Environment
Java VM	Java HotSpot(TM) 64-Bit Server VM
Java-Laufzeitargumente	-Djava.util.logging.config.file=/home/atlassian/confluence/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Dorg.apache.tomcat.websocket.DEFAULT_BUFFER_SIZE=32768 -Xms1024m -Xmx1024m -XX:+UseG1GC -Datlassian.plugins.enable.wait=300 -Djava.awt.headless=true -XX:G1ReservePercent=20 -Xloggc:/home/atlassian/confluence/logs/gc-2017-11-09_18-53-39.log -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=5 -XX:GCLogFileSize=2M -XX:-PrintGCDetails -XX:+PrintGCDateStamps -XX:-PrintTenuringDistribution -Djava.endorsed.dirs=/home/atlassian/confluence/endorsed -Dcatalina.base=/home/atlassian/confluence -Dcatalina.home=/home/atlassian/confluence -Djava.io.tmpdir=/home/atlassian/confluence/temp

Datenbankname	PostgreSQL
Datenbankversion	9.4.10
Datenbankdialekt	net.sf.hibernate.dialect.PostgreSQLDialect
Name des Datenbanktreibers	org.postgresql.Driver
Version des Datenbanktreibers	PostgreSQL 9.4.1212
URL für Datenbankverbindung	jdbc:postgresql://localhost:5432/confluence
Transaktionsisolation für Datenbankverbindung	Read committed
Datenbank-Wartezeit	0

Thank you in advance!

luetm

[Nic Brough -Adaptavist- · Accepted solution]

Are your users using plain text or the link option?  How have you customised the link option to understand the new non-standard protocol?

[Hexabit GmbH]

We use the 'Link' button in the toolbar. I did not have to customize anything on the JIRA/Confluence side. The protocol is registered in the Windows Registry and works with a custom application we developed.

[Nic Brough -Adaptavist-]

Ok.  Confluence does not recognise that as a valid link, so it does not save it as a link.  That's why I asked what you had customised, because you need to hack the code in confluence to tell it that this should be treated as a link.

[Hexabit GmbH]

That's not entirely true. The first time around, it works and it recognizes the link as valid. When I save, everything works, the click launchers our software, everthing perfect. But, when I go on to edit the page again at some later time, the link will be gone.

Is it possible to tell confluence, that the hxcrypt:// protocol is valid?

[Nic Brough -Adaptavist-]

You would have to hack the code.

The reason that it seems valid at first until edited is probably that the "create link" code has been written to accept anything without validation because users may post invalid stuff.  Editing is expected to put valid things in.

[Hexabit GmbH]

OK. I'll look if I can find a plugin that lets me put plain HTML in there, then it should work.