Created attachment 77890 [details]
snapshot of memory and CPU trend of soffice.bin

We use OOo to generate word documents, OOo runs as service,our Java application  pulls data from Database which includes plain text, html content with RTF data  and files like jpgs from local filesystem and puts them in placeholders in odt template. RTF content mentioned above comes from TinyMCE - Javascript WYSIWYG Editor of our web application, here RTF content is pasted from MicroSoft WORD documents.

Some of the UNO API used are 

xReplaceDescriptor.setReplaceString(replaceStr) where replaceStr could HTML content

OR

XDocumentInsertable xDocumentInsertable = (XDocumentInsertable) UnoRuntime.queryInterface(XDocumentInsertable.class, xTextCursor);
xDocumentInsertable.insertDocumentFromURL(strFileUrl, insertArgs);// Inserts the document that is specified by the URL, strFileUrl is a HTML file with RTF content.

Most of the time above API work fine but we noted critical failures when there are special HTML attributes in the RTF content or if there is ill formatted HTML like nested SPAN tags without matching close tags.

For example 'class=Note' attribute of <P> tag causing soffice.bin hang and CPU and memory hijack. Below is sample tags causing this problem

<P style="MARGIN: 6pt 3.5in 6pt 0.5in" class=Note _mce_style="margin-bottom: 0pt;margin: 6pt 3.5in 6pt 0.5in;" ><FONT size=2 face=Arial> </FONT></P>
<P style="MARGIN: 6pt 3.5in 6pt 0.5in" class=Note _mce_style="margin-bottom: 0pt;margin: 6pt 3.5in 6pt 0.5in;" ><FONT size=2 face=Arial>To update the table of contents, put the cursor anywhere in the table and press [F9].<SPAN style="mso-spacerun: yes" _mce_style="mso-spacerun: yes;">  </SPAN>To change the number of levels displayed, select the menu option Insert-&gt;Index and Tables, make sure the Table of Contents tab is active, and change the Number of Levels to a new value.</FONT></P></DIV>

See Attached is snapshot of memory and CPU trend of soffice.bin process

Below is sample stacktraces when soffice.bin is hung

WebContainer : 0" Priority=5 Thread Id=101 In State : WAITING
at java.lang.Object.wait(Native Method)
at com.sun.star.lib.uno.environments.remote.JobQueue.removeJob(JobQueue.java:289)
at com.sun.star.lib.uno.environments.remote.JobQueue.enter(JobQueue.java:399)
at com.sun.star.lib.uno.environments.remote.JobQueue.enter(JobQueue.java:372)
at com.sun.star.lib.uno.environments.remote.JavaThreadPool.enter(JavaThreadPool.java:132)
at com.sun.star.lib.uno.bridges.java_remote.java_remote_bridge.sendRequest(java_remote_bridge.java:902)
at com.sun.star.lib.uno.bridges.java_remote.java_remote_bridge.sendRequest(java_remote_bridge.java:851)

AND

 0000000d ThreadMonitor W   WSVR0605W: Thread "WebContainer : 23" (0000009b) has been active for 624507 milliseconds and may be hung.  There is/are 1 thread(s) in total in the server that may be hung.
	at java.lang.Object.wait(Native Method)
	at com.sun.star.lib.uno.environments.remote.JobQueue.removeJob(JobQueue.java:289)
	at com.sun.star.lib.uno.environments.remote.JobQueue.enter(JobQueue.java:399)
	at com.sun.star.lib.uno.environments.remote.JobQueue.enter(JobQueue.java:372)
	at com.sun.star.lib.uno.environments.remote.JavaThreadPool.enter(JavaThreadPool.java:132)
	at com.sun.star.lib.uno.bridges.java_remote.java_remote_bridge.sendRequest(java_remote_bridge.java:902)
	at com.sun.star.lib.uno.bridges.java_remote.java_remote_bridge.sendRequest(java_remote_bridge.java:851)
	at com.sun.star.lib.uno.bridges.java_remote.ProxyFactory$Handler.request(ProxyFactory.java:177)
	at com.sun.star.lib.uno.bridges.java_remote.ProxyFactory$Handler.invoke(ProxyFactory.java:163)
	at $Proxy30.storeAsURL(Unknown Source)
at com.sun.star.lib.uno.bridges.java_remote.ProxyFactory$Handler.request(ProxyFactory.java:177)
at com.sun.star.lib.uno.bridges.java_remote.ProxyFactory$Handler.invoke(ProxyFactory.java:163)
at $Proxy10.getString(Unknown Source)


Are there any fixes or workarounds for these issues?

We have partial success when HTML content is cleaned with utilities like jTidy API before passing to OpenOffice service

Are there any utilities at UNO API level to discard above mentioned HTML attributes or ill formatted HTML

Quick response is appreciated, let us know if you need more details in reproducing the issue