Credentials with "-" break unuseable with FromEnvironment

[thekid]

Works fine on Windows:

C:\Users\friebe>set LDAP-PASS=foo
C:\Users\friebe>echo %LDAP-PASS%
foo

...but not on Un*x sytems:

$ export LDAP-PASS=foo
-bash: export: `LDAP-PASS=foo': not a valid identifier

[thekid]

https://unix.stackexchange.com/questions/93532/exporting-a-variable-with-dot-in-it

[thekid]

On Cygwin, using env will work:

$ env LDAP-PASS=wurst xp -d '$_ENV["LDAP-PASS"]'
string(5) "wurst"

Unfortunately, on Linux, it won't:

# It works until here
root@ba274f210d69:/app# env LDAP-PASS=wurst php -r 'var_dump($_ENV["LDAP-PASS"]);'
string(5) "wurst"

# ...but stops here:
root@ba274f210d69:/app# env LDAP-PASS=wurst xp -d '$_ENV["LDAP-PASS"]'
Uncaught exception: Exception lang.IndexOutOfBoundsException (Undefined index: LDAP-PASS)

Seems like a bug in Mono at first, but this works like a charm:

root@ba274f210d69:/app# cat > getenv.cs
using System;

public class getenv
{
    public static int Main(string[] args)
    {
        Console.WriteLine("$ENV[{0}]= {1}", args[0], Environment.GetEnvironmentVariable(args[0]));
        return 0;
    }
}
root@ba274f210d69:/app# mcs getenv.cs
root@ba274f210d69:/app# env LDAP-PASS=wurst mono getenv.exe LDAP-PASS
$ENV[LDAP-PASS]= wurst

Actually is a bug in the shell wrapper!

root@ba274f210d69:/app# sh /usr/bin/xp -d 'ksort($_ENV); return $_ENV' > sh
root@ba274f210d69:/app# mono /usr/bin/xp.exe -d 'ksort($_ENV); return $_ENV' > mono
root@ba274f210d69:/app# diff -u mono sh
--- mono        2018-08-13 23:18:18.809871136 +0000
+++ sh  2018-08-13 23:18:07.245675225 +0000
@@ -1,12 +1,10 @@
-array(23) {
+array(22) {
   ["GPG_KEYS"]=>
   string(81) "1729F83938DA44E27BA0F4D3DBDB397470D12172 B1B44D8F021E4E2D6021E995DC9FF8D3EE5AF27F"
   ["HOME"]=>
   string(5) "/root"
   ["HOSTNAME"]=>
   string(12) "ba274f210d69"
-  ["LDAP-PASS"]=>
-  string(5) "wurst"
   ["PATH"]=>
   string(60) "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
   ["PHPIZE_DEPS"]=>
@@ -44,5 +42,5 @@
   ["XP_VERSION"]=>
   string(9) "8.1.3.420"
   ["_"]=>
-  string(13) "/usr/bin/mono"
+  string(7) "/bin/sh"
 }