Conversion error for b64encode

Wiki page updated with accurate notes re: affected versions, and the URI::encode/decode workaround.

 

Click here

 

 

Thanks, guys

 

 

/deb

Hey all,

 

 

I'm experiencing the same b64decode error " - conversion error invoked from within "b64decode [lindex $::banner_prg_png_class 0]"

 

 

I've encoded a png image as directed by this post http://devcentral.f5.com/wiki/default.aspx/iRules/LTMMaintenancePage.html

 

 

I've created the file and removed all of the 'returns', created the class, and associated the iRule with the VIP.

 

 

This code fails:

 

 

when HTTP_REQUEST { 
 log local0.info "Rule initiated" 
 HTTP::respond 200 content [b64decode [lindex $::banner_png_class 0]] "Content-Type" "image/png" 
 log local0.info "Response Successful"    
 }

 

 

When I replace the "[lindex $::banner_png_class 0]" with the actual b64 text - it works just fine.

 

 

What I'm trying to do in the end is to have a 200 respond with a multilined html response with several images, but I can't get past this step...

 

 

Thanks in advance.

Which LTM version are you running? Can you take a look at these posts for some ideas and reply here if it still doesn't work?

 

 

http://devcentral.f5.com/Default.aspx?tabid=53&view=topic&postid=58407&ptarget=58409

 

http://devcentral.f5.com/Default.aspx?tabid=53&view=topic&postid=33977&ptarget=34099

 

 

Can you post the content of the external file? It should be in the format of

 

 

"base64_encoded_string",

 

 

Aaron

Thus far, I've been working in our lab which is running 10.0.0.5401.0.

 

 

I was using the 'F5 Logo' example:

 

 

"iVBORw0KGgoAAAANSUhEUgAAAL4AAAC3AgMAAADRFQzGAAAACVBMVEUAAADDAAD///8UoaPIAAA\

 

DhElEQVRo3u3ZOW7dMBAAUB8lSBXkPmTB3g1PEqSf3jAwgYenTP4icVYuXpDmq/Dyv564SSNy+NT2\

 

jpenB3iALYAp7wBI12MZpOOoayClgXAAMJAWAPLzbdMtSPIoM4AKpBnQ5+siNDAF6CI0sOerIhRwCl\

 

AdpUDyjhoDckGOAbggxcA/XzRbAApAjkBQI1EnAaLzeT9xQCHIPkB2QYrqxAHwy0FQJw5E8Rh0LAMk\

 

Sw8awQDKa4HfCAZAXgpvVdeNYED3+HFdFAV3QPomgLMiyL7oAPWtj6zm/c8O4Ggb3S9HvDyw4Kwp3H/\

 

7AfwEdNboKGkFiMaDiXoC4FEjOro3jQEcNcL7vUALgN91FVV8qQqco3YHGRQoEtA5/BhEMAdUDUTlswS\

 

4C842R4CSAebZzBJUAdI7QJmAwgF54N8HaQSqB1K/YzIHOALX72IAbKBZwHy+9/Id9GGIQPoKoANsZSB\

 

9CSgdkAeyDsgfBXkKcgfogaJfqwtANjsAZxQp5k00AdXp5wOAnaCyIAMeaAPQFoGdU9RVcFSqgzQBNAcg\

 

ew1mgEyQmQDQ43KOvQPQmxCjBX/UMJVm6sSBvfmKnZSfgDxQ7UJnC+AuoClw1kYSlAmAXYATkB2QtwDtl\

 

tAmoHwcwCeD6qz6/zOwsz3avDWmwLnB5SNqgRptmjzTwQRoDKRYAUIsAX6LiFAZAv5eWQPZAzAAvYhVkH\

 

dBX2y2RVAswCHIuyBtg1s/UV4GxQAag/xOUJZBMqB9BnjW3YRVTqUVyLgJCs1A0pFPDwToBYeOfHtATot\

 

LXyqyRZMARcxxF0A1gIpe+Akg81NzkGX+p5y9yhevA1BHAE8gAz+YBbiY8smlQG3nsnQNOCt2UmvRKrqp\

 

dxJPUxjQ+BOHE1A4uPwD1zj5k2dObG6Nz0ivX/9+5ckcC5BnFi8ffPsRZtYzX2hcCrt88Pb6ywHEIgur0\

 

eXH24tXQmOBAnuNalgCG7n+LoNbH353AU/gHU/i/QK8l3Q7qrejwseh0QC4qcfG3uEqP4Z+chP6WZT0ui\

 

/Otza9gheB18voXs4k/kYPU8DNfVfRIMkcJtajNPZ2ojxOxZfdZH+Qu3d3UIbbCdsbFlGdaghwd9OlTWu\

 

0snGURhtHtLs1NZheBYAmW1n2mYbdDTza3SLUHbWwzRlvrS1spJalnVcanB9Evvj8aLuZ3BX1Y1P+AUbgL\

 

zbWCp20NpfmAAAAAElFTkSuQmCC",

OK. Just tried on 9.4.7 320.1 and it worked...hmm, why wouldn't it work in v10?

 

 

I'll post back final results here in a bit...

Wow. Guess I should have tried everything on v9 earlier on in my testing.

 

 

Everything works PERFECT on v9, but v10 is a no go. Is this a known issue?

There could be a bug in 10.0.0. 10.0.1 is out, so you could try upgrading and retesting.

 

 

Aaron

Referencing a class that way in v10 just returns the name of the class. You'll need to use the class command introduced in v10. Check out the bottom example in the wiki page for class:

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/class.html Click here

Awesome, thanks!

 

 

FYI - I think the syntax is swapped in the example (should be "-value 0" instead of "value -0" in the class section.

 

 

Cheers!

yep, good catch. I updated the wiki. For future reference, if you see these errors, you can edit as well.