Tldr; the debug output starting with "< HTTP/1.1 " 
Seems to be the most useful. Here is some of the debug output:
< HTTP/1.1 502 Proxy Error
< HTTP/1.1 200 OK
< HTTP/1.1 404 Not found
< HTTP/1.1 503 Service Temporarily Unavailable


The 200 is a good key retrieval. The 400 is definitely key not found. The 502 
and 503 can be retried.

Again, I'm keen to try adding "debug" to the --recv-keys command and see what 
happens. In parallel, if someone can figure out how to extract just the HTTP/ 
part of the debug output, we can programmatically distinguish between the key 
not found and the temporary errors.

Craig

> On Feb 12, 2019, at 3:44 PM, Craig Russell <[email protected]> wrote:
> 
> I just read the code again and I'll copy it here:
> 
> # run gpg verify command
>   out, err, rc = Open3.capture3 gpg, '--verify', signature.path,
>     attachment.path
> 
>   # if key is not found, fetch and try again
>   if 
>     err.include? "gpg: Can't check signature: No public key" or
>     err.include? "gpg: Can't check signature: public key not found"
>   then
>     # extract and fetch key
>     keyid = err[/[RD]SA key (ID )?(\w+)/,2].untaint
> 
>     out2, err2, rc2 = Open3.capture3 gpg, '--keyserver', 'pgpkeys.mit.edu 
> <http://pgpkeys.mit.edu/>',
>       '--recv-keys', keyid
> 
>     # run gpg verify command again
>     out, err, rc = Open3.capture3 gpg, '--verify', signature.path,
>       attachment.path
> 
>     # if verify failed, concatenate fetch output
>     if rc.exitstatus != 0
>       out += out2
>       err += err2
>     end
>   end
> 
> 
>> On Feb 11, 2019, at 12:25 PM, Craig Russell <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>> Hi Shane,
>> 
>>> On Feb 9, 2019, at 5:07 AM, Shane Curcuru <[email protected] 
>>> <mailto:[email protected]>> wrote:
>>> 
>>> Can;'t type enough for code yet, but miss coding, so... ideas:
>>> 
>>> When verifying zig, you want workbench to:
>>> 
>>> - IF we get here: (i.e. there was an error gettign key)
>>> https://github.com/apache/whimsy/blob/master/www/secretary/workbench/views/actions/check-signature.json.rb#L40
>>>  
>>> <https://github.com/apache/whimsy/blob/master/www/secretary/workbench/views/actions/check-signature.json.rb#L40>
>> 
>> First, the entire error message should be displayed instead of just "no 
>> data". 
> 
> Actually, if we get here, there was an error verifying the signature, *not* 
> getting the key. Getting the key is done after the #extract and fetch key 
> line, using the command
> gpg, '--keyserver', 'pgpkeys.mit.edu <http://pgpkeys.mit.edu/>',
> 
>  '--recv-keys', keyid
> The code then tries to verify the signature again, and if it fails, 
> concatenates the failure to obtain the key with the failure to verify.
> 
> I've never seen anything except "no key data" so I believe that the real 
> problem here is that the gpg --recv-keys command just doesn't give much data 
> if it doesn't successfully receive the key.
> 
> So perhaps all we really need to do here is to give more options on the 
> recv-keys command. Perhaps using --keyserver-options would help, with options 
> of "verbose" or "debug".
> 
> Using verbose does not seem to help:
> gpg --keyserver pgpkeys.mit.edu <http://pgpkeys.mit.edu/> --keyserver-options 
> verbose --recv-keys 91CDDE15
> gpg: requesting key 91CDDE15 from hkp server pgpkeys.mit.edu 
> <http://pgpkeys.mit.edu/>
> gpgkeys: key 91CDDE15 can't be retrieved
> gpg: no valid OpenPGP data found.
> gpg: Total number processed: 0
> gpg: keyserver communications error: keyserver helper general error
> gpg: keyserver communications error: Invalid public key algorithm
> gpg: keyserver receive failed: Invalid public key algorithm
> 
> Using debug gives more information:
> 
> bash-3.2$ gpg --keyserver pgpkeys.mit.edu <http://pgpkeys.mit.edu/> 
> --keyserver-options debug --recv-keys 91CDDE15
> gpg: requesting key 91CDDE15 from hkp server pgpkeys.mit.edu 
> <http://pgpkeys.mit.edu/>
> gpgkeys: curl version = libcurl/7.54.0 LibreSSL/2.0.20 zlib/1.2.11 
> nghttp2/1.24.0
> *   Trying 18.9.60.141...
> * TCP_NODELAY set
> * Connected to pgpkeys.mit.edu <http://pgpkeys.mit.edu/> (18.9.60.141) port 
> 11371 (#0)
> > GET /pks/lookup?op=get&options=mr&search=0x91CDDE15 HTTP/1.1
> Host: pgpkeys.mit.edu:11371 <http://pgpkeys.mit.edu:11371/>
> Accept: */*
> Pragma: no-cache
> Cache-Control: no-cache
> 
> < HTTP/1.1 503 Service Temporarily Unavailable
> < Date: Tue, 12 Feb 2019 23:31:23 GMT
> < Content-Length: 323
> < Connection: close
> < Content-Type: text/html; charset=iso-8859-1
> < 
> * Closing connection 0
> gpgkeys: key 91CDDE15 can't be retrieved
> gpg: no valid OpenPGP data found.
> gpg: Total number processed: 0
> gpg: keyserver communications error: keyserver helper general error
> gpg: keyserver communications error: Invalid public key algorithm
> gpg: keyserver receive failed: Invalid public key algorithm
> 
> I'm not clear from the console output here which output is part of the stdout 
> and which is part of errout. But I'd be willing to just try adding debug to 
> the command and see what happens.
> 
> WDYT?
> 
> Craig
> 
>>> 
>>> - And if
>>>    err.include? "gpg: Can't check signature: No public key" or
>>>    err.include? "gpg: Can't check signature: public key not found"
>>> 
>>> - Then Do: enable the action that sends pubkey.erb (so you can push the
>>> button - or do you want it to automatically send that upload email)?
>> 
>> The action to send pub key.erb is always enabled. But the message should 
>> have the command that failed, e.g. 
>> http://pgpkeys.mit.edu/pks/lookup?search=91CDDE11&op=index 
>> <http://pgpkeys.mit.edu/pks/lookup?search=91CDDE11&op=index> 
>> 
>> That way, the sender has some idea of which key was being requested.
>>> 
>>> - ELSE: (other error like proxy/timeout)
>>>  - Disable the pubkey.erb
>> 
>> No need. 
>> 
>>>  - Allow the Secretary to re-process the check sig action.
>>> 
>>> Do you want it to simply give you the button to immediately re-chceck
>>> for the key, 
>> 
>> That would be a nice option. Just clicking on the .pdf file doesn't 
>> automatically try to download the public key from what I can tell.
>> 
>>> or do you want to leave this whole msg and come back later?
>> 
>> Just having the entire error message displayed with no further 
>> editing/analysis is fine. From the message, secretary can decide whether to 
>> send the "upload pub key" message or not. And in fact, sometimes it takes a 
>> couple of upload messages before the sender gets around to uploading the 
>> key. And having the command as part of the message might allow the sender to 
>> just click on the link and see if they are successful accessing their own 
>> public key.
>> 
>> Craig
>>> 
>>> -- 
>>> 
>>> - Shane
>>>  Director & Member
>>>  The Apache Software Foundation
>>> 
>>> Craig Russell wrote on 2/8/19 8:18 PM:
>>>> Hi,
>>>> 
>>>> When a document has an associated .asc file, whimsy automatically tries to 
>>>> download the public key in order to verify the signature.
>>>> 
>>>> But the key server is often busy and just cannot service the request 
>>>> timely.
>>>> 
>>>> The current behavior of whimsy does not distinguish among at least three 
>>>> cases:
>>>> 
>>>> No key found
>>>> Timeout
>>>> Proxy error
>>>> 
>>>> No key found is the only case where the secretary should send the "upload 
>>>> public key" message to the submitter.
>>>> 
>>>> In the other two cases, the secretary should retry (later) until a 
>>>> definitive No key found error is received or the public key is downloaded.
>>>> 
>>>> Can the actual error be extracted from the message to avoid confusion?
>>>> 
>>>> Thanks,
>>>> 
>>>> Craig
>>>> 
>>>> Craig L Russell
>>>> Secretary, Apache Software Foundation
>>>> [email protected] <mailto:[email protected]> http://db.apache.org/jdo 
>>>> <http://db.apache.org/jdo>
>>>> 
>>> 
>> 
>> Craig L Russell
>> Secretary, Apache Software Foundation
>> [email protected] <mailto:[email protected]> http://db.apache.org/jdo 
>> <http://db.apache.org/jdo>
> Craig L Russell
> Secretary, Apache Software Foundation
> [email protected] <mailto:[email protected]> http://db.apache.org/jdo 
> <http://db.apache.org/jdo>
Craig L Russell
Secretary, Apache Software Foundation
[email protected] <mailto:[email protected]> http://db.apache.org/jdo 
<http://db.apache.org/jdo>

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