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BreeeZe / rpos

Raspberry Pi Onvif Server
http://breeeze.github.io/rpos
MIT License
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Get exception from sax.js in node_modules #156

Closed KianZhou8005 closed 11 months ago

KianZhou8005 commented 1 year ago

Hi,

I have a Onvif client written by C++, it uses curl_easy_perform(curl) to query device info.

but it gets an response which shows below error:

Error: No whitespace between attributes Line: 0 Column: 114 Char: x at error (D:\TEMP\rpos-master\node_modules\sax\lib\sax.js:651:10) at strictFail (D:\TEMP\rpos-master\node_modules\sax\lib\sax.js:677:7)
at SAXParser.write (D:\TEMP\rpos-master\node _modules\sax\lib\sax.js:1395:13)
at WSDL.xmlToObject (D:\TEMP\rpos-master\node_modules\soap\lib\wsdl.js:1381:5)
at Server._process (D:\TEMP\rpos-master\node_modules\soap\lib\server.js:151:21)
at IncomingMessage. (D:\TEMP\rpos-master\node_modules\soap\lib\server.js:124:14)
at IncomingMessage.emit (node:events:513:28)
at endReadableNT (node:internal/streams/readable:1359:12)
at process.processTicksAndRejections (node:internal/process/task_queues:82:21)

It seems the error is a XML converting issue, but I don`t know where is the XML and where is method is called

Can you give some advise?

RogerHardiman commented 1 year ago

can you past the XML that you send out from your onvif client please?

RogerHardiman commented 11 months ago

I stumbled across the same error myself two weeks ago and was able to find and fix it. I also had to go looking for where the XML conversion is.

The cause is that there are characters after the ONVIF XML query. So curl is sending something like this

<XML><ONVIF Command></ONVIF Command></XML><null or whitespace><null or whitespace><null or whitespace>

it was the extra NULL or whitespace after the end of the XML text that caused the crash in 'sax.js'

The current master branch has a fix for this. It had to be fixed in an upstream library which RPOS forked (node-soap)