[scl.org] scl wrapper mishandles quotes in command parameters?

[Pavel Valena]

----- Original Message -----
> From: "John Beranek" <John.Beranek at pamediagroup.com>
> To: sclorg at redhat.com
> Sent: Tuesday, December 8, 2020 6:59:17 PM
> Subject: [scl.org] scl wrapper mishandles quotes in command parameters?
> 
> So, just discovered what looks like a bug in the 'scl' wrapper with handling
> double-quote (at least) characters in command parameters. This is with:
> 
> scl-utils-20130529-19.el7.x86_64
> 
> Given the test scripts:
> 
> ===============test.pl======================
> #!/usr/bin/perl
> 
> print "SCL wrapper\n===============\n";
> 
> system(
>        'scl',
>        'enable',
>        'rh-php72',
>        '--',
>        'php',
>        'test.php',
>        '"hello world"'
>       );
> 
> system(
>        'scl',
>        'enable',
>        'rh-php72',
>        '--',
>        'php',
>        'test.php',
>        'another"test'
>       );
> 
> print "\nWithout wrapper\n===============\n";
> 
> system(
>        '/opt/rh/rh-php72/root/bin/php',
>        'test.php',
>        '"hello world"'
>       );
> 
> system(
>        '/opt/rh/rh-php72/root/bin/php',
>        'test.php',
>        'another"test'
>       );
> ===================================================

Hello John,

although I don't have solution for you, I think the `scl enable XXX --` syntax is more aimed at shell usage. If you run it in shell, instead of using `system()`, will it help?

I think I've also seen this worked around somewhere by nesting the command in a shell:
```
$ scl enable -- sh -c "...."
```

AFAIK the scl-utils are quite outdated, and there's no suitable successor.

> 
> ==============test.php==============================
> <?php
> print("\$argv:\n");
> print_r($argv);
> ?>
> ===================================================
> 
> This is the rather unexpected output:
> 
> ===================================================
> $ ./test.pl
> SCL wrapper
> ===============
> $argv:
> Array
> (
>     [0] => test.php
>     [1] => hello
>     [2] => world
> )
> /var/tmp/sclbhWRnY: line 8: unexpected EOF while looking for matching `"'
> /var/tmp/sclbhWRnY: line 9: syntax error: unexpected end of file
> 
> Without wrapper
> ===============
> $argv:
> Array
> (
>     [0] => test.php
>     [1] => "hello world"
> )
> $argv:
> Array
> (
>     [0] => test.php
>     [1] => another"test
> )
> =====================================================
> 
> All the above available in a gist, in case it's hard to read from the list
> post:
> https://gist.github.com/pa-jberanek/8942f39573edf6044e42bf8724d657a5
> 
> Cheers,
> 
> John
> 
> --
> John Beranek
> 
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> 

Regards,

-- 
Pavel Valena
Software Engineer, Red Hat
Brno, Czech Republic