rabbitmqctl.bat encode doesn't works under Windows

[moerwald]

Describe the bug

Docu describes following example:

rabbitmqctl encode '<<"guest">>' mypassphrase

Using this snipped in PowerShell :

> .\rabbitmqctl.bat encode '<<"ABC">>' "1234"
"<<" kann syntaktisch an dieser Stelle nicht verarbeitet werden.

return above error.

RabbitMQ-Version: 4.0.1

Reproduction steps

Using this snipped in PowerShell :

> .\rabbitmqctl.bat encode '<<"ABC">>' "1234"
"<<" kann syntaktisch an dieser Stelle nicht verarbeitet werden.

return above error.

Expected behavior

Clear documentation how to use this under Windows PowerShell/Cmd-Line.

Additional context

Workaround

> .\rabbitmqctl.bat encode '"""ABC"""' "1234"
Encrypting value ...
{encrypted,<<"GvSHcFgA2c0ji2j1DsZn9gGqVNXODWvocjj/YQCFEsCBmJEb50NrPJM7gDELGYDp">>}

[lukebakken]

Don't use PowerShell:

C:\Users\lbakken\opt\rabbitmq\rabbitmq_server-4.0.6>.\sbin\rabbitmqctl.bat encode "<<\"ABC\">>" 1234
Encrypting value to be used in advanced.config...
{encrypted,<<"Fu08BDHv+D8KPTlBJSxdmGdoEcce8U/8Qsa9fA8ulHiJ3fcZrDWEFaaDgqM8n90j">>}

C:\Users\lbakken\opt\rabbitmq\rabbitmq_server-4.0.6>.\sbin\rabbitmqctl.bat decode "<<\"OLjslB7qoCChOiXHBQ/69qIv1FIskSfe3xl+nbERYOX27ryDNmagJtl+B9KcnZi9\">>"
Decrypting an advanced.config (Erlang term) value...
Passphrase:
1234
<<"ABC">>

<< is interpreted as either a redirect or here-document by PowerShell, I can't tell which. I'm investigating how to escape that.

[lukebakken]

Actually, it's not a PowerShell issue. If I take cmd.exe out of the mix, it works fine. On my dev machine, the RabbitMQ Windows zip release is extracted to C:\Users\lbakken\opt\rabbitmq\rabbitmq_server-4.0.6

C:\Users\lbakken\opt\rabbitmq\rabbitmq_server-4.0.6
> $env:ERL_LIBS='C:\Users\lbakken\opt\rabbitmq\rabbitmq_server-4.0.6\plugins'

C:\Users\lbakken\opt\rabbitmq\rabbitmq_server-4.0.6
> erl.exe '+B' -noinput -noshell -hidden -smp enable -boot start_clean -run escript start -escript main rabbitmqctl_escript -extra 'C:\Users\lbakken\opt\rabbitmq\rabbitmq_server-4.0.6\escript\rabbitmqctl' encode '<<"ABC">>' "1234"
Encrypting value to be used in advanced.config...
{encrypted,<<"j2Iy/CPr5iXXWFa+16eUVMPp29AdviR/aTMEsdkFtBx5JJCC1hSDrz17/VaiTEeK">>}

So, this has to do with how cmd.exe is parsing <<.

[lukebakken]

@moerwald - this is the correct way to escape the arguments for encode to work, when using PowerShell:

C:\Users\lbakken\opt\rabbitmq\rabbitmq_server-4.0.6
> .\sbin\rabbitmqctl.bat encode '"<<\"ABC\">>"' 1234
Encrypting value to be used in advanced.config...
{encrypted,<<"K9CcSy8t5y9olNyiGsMFOTXn2sZWt9CAxwuWM3oXlO3e88jjggFTWhNhtb1CVrAM">>}

C:\Users\lbakken\opt\rabbitmq\rabbitmq_server-4.0.6
> .\sbin\rabbitmqctl.bat decode '"<<\"K9CcSy8t5y9olNyiGsMFOTXn2sZWt9CAxwuWM3oXlO3e88jjggFTWhNhtb1CVrAM\">>"'
Decrypting an advanced.config (Erlang term) value...
Passphrase:
1234
<<"ABC">>

I will see what documentation I can update.