From: thomas at tada.se (Thomas Hallgren)
Date: Thu, 03 Jun 2010 16:32:41 +0200
Subject: [Pljava-dev] cannot set the classpath to a specific jar to get
 anexternal connection
In-Reply-To: <201006031543.21939.fluca1978@infinito.it>
References: <201006031052.33192.fluca1978@infinito.it>
	<8661B041D452404E8088FBD47D2443BE019EC515@NDCEXCUS703.int.asurion.com>
	<201006031539.14616.fluca1978@infinito.it>
	<201006031543.21939.fluca1978@infinito.it>
Message-ID: <4C07BD09.1070302@tada.se>

PL/Java is implemented as a trusted procedure language. It will 
therefore prevent all access to the filesystem. You can use language 
"javaU" if you want untrusted. More details here: 
http://wiki.tada.se/index.php/Security.

Regards,
Thomas Hallgren

On 2010-06-03 15:43, Luca Ferrari wrote:
> On Thursday 03 June 2010 03:39:14 pm Luca Ferrari's cat walking on the
> keyboard wrote:
>
>> java.lang.NoClassDefFoundError: Could not initialize class
>> sun.security.provider.NativePRNG
>>
>
> I've noted that when the function is called the first time the logs are
> differents and provide the following stacktrace:
>
> Caused by: java.lang.SecurityException: read on /dev/random
>          at
> org.postgresql.pljava.internal.Backend$1.assertPermission(Backend.java:176)
>          at
> org.postgresql.pljava.internal.Backend$PLJavaSecurityManager.nonRecursiveCheck(Backend.java:111)
>          at
> org.postgresql.pljava.internal.Backend$PLJavaSecurityManager.checkPermission(Backend.java:89)
>          at java.lang.SecurityManager.checkRead(SecurityManager.java:871)
>          at java.io.File.exists(File.java:731)
>          at sun.security.provider.NativePRNG$1.run(NativePRNG.java:60)
>          at java.security.AccessController.doPrivileged(Native Method)
>          at sun.security.provider.NativePRNG.initIO(NativePRNG.java:57)
>          at sun.security.provider.NativePRNG.<clinit>(NativePRNG.java:54)
>          ... 31 more
> 2010-06-03 15:39:43 CEST ERROR:  java.lang.ExceptionInInitializerError
>
>
> so it seems a problem of reading /dev/random, even if the user has the
> permissions:
>
> $ ls -l /dev/random
> crw-rw-rw- 1 root root 1, 8 2010-06-03 15:31 /dev/random
>
>
> Any idea?
>
> Thanks,
> Luca
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