Agent++/Snmp++ on Solaris8 64bit

[Bettendorf, Cristian]

Hello Frank,

My short investigation, shows that the code is not 64bit compatible. Please
take a look and give me feedback.

1. the code works on Tru64 /Digital UX but this is a positive side effect
and shows only that the serialization looks to be ok, not the full code...

2. the Tru64 use a little endian hardware architecture, this hide the real
problems in the code 

3. the Sol8 64bit use a big endian hardware architecture, sizes here
(identical with Tru64):
long      : 8
pointer   : 8
short     : 2
int       : 4
char      : 1
long long : 8

Now I have analysed why the snmpGet don't work and find a type cast into the
code
file: snmp++/src/snmpmsg.cpp, fct int SnmpMessage::load(...)

(int *) &bufflen

Now, buflen is defined as 'unsigned long', this cast here to the high 4
bytes of the buflen! Then other calls will break with error since the value
is wrong...
On win32, solaris 32bit the sizeof int == size of long == 4 bytes, also
identical -> no problem; on tru64 due the little endian architecture the
cast works too since get the 4 low bytes from buflen and the value can be
represented only using this 4 bytes.

I have stopped here the analysis since this is the first problem which kill
snmpGet.

Do I miss something?

Cristian


-----Original Message-----
From: Bettendorf, Cristian 
Sent: Freitag, 8. Februar 2002 20:25
To: Bettendorf, Cristian; 'Frank.Fock____t-online.de'
Cc: 'bjcarter____asapit.com'; agentpp-dl____agentpp.com
Subject: RE: Agent++/Snmp++ on Solaris8 64bit


Hi,

ok, I have compiled the test utility snmpget on OSF1 4.0 and here looks to
work...

Cristian

-----Original Message-----
From: Bettendorf, Cristian [mailto:Cristian.Bettendorf____softwareag.com]
Sent: Freitag, 8. Februar 2002 19:27
To: 'Frank.Fock____t-online.de'
Cc: 'bjcarter____asapit.com'; agentpp-dl____agentpp.com
Subject: RE: Agent++/Snmp++ on Solaris8 64bit


Hi Frank,

which flags are used to compile on OSF1? (Digital Unix 4.0 or True64 5.0 )
I can made a quick test...

Cristian

-----Original Message-----
From: Frank.Fock____t-online.de [mailto:Frank.Fock____t-online.de]
Sent: Freitag, 8. Februar 2002 18:29
To: Bettendorf, Cristian
Cc: 'bjcarter____asapit.com'; agentpp-dl____agentpp.com
Subject: Re: Agent++/Snmp++ on Solaris8 64bit


Hi Christian,

The AGENT++ and SNMP++v3.x code works on Digital Unix
(True64) which is a true 64bit system. SNMP++v2.x will not work
on 64bit systems! If you have used SNMP++v3.x please check
compiler settings that may turn off 64bit compatibility. Code that
may be affected by 64bit is located in snmp++/src/asn1.cpp

Hope this helps.

Best regards,
Frank

"Bettendorf, Cristian" wrote:

> Hi,
>
> I don't understand exactly what you mean. I use this compiler to build a
lot
> of projects on this machine in 64bit mode and all works fine, e.g. the
full
> Microsoft DCOM stuff ported to UNIX (our EXX DCOM product). This all
include
> C++ and network low level code, all works fine.
>
> As I sad, the compile and link step was OK, the module was built and it's
> starting and not produce segmentation errors.
>
> But I had the feeling that the error could be produced due the new data
size
> used for all basic types in a 64bit native environment. Maybye somebody
had
> done the analysis and could point me in the right direction.
>
> Cristian
>
> -----Original Message-----
> From: Bruce J. Carter [mailto:bjcarter____asapit.com]
> Sent: Donnerstag, 7. Februar 2002 18:48
> To: Bettendorf, Cristian
> Cc: agentpp-dl____agentpp.com
> Subject: Re: Agent++/Snmp++ on Solaris8 64bit
>
> I had this same problem and Frank pointed me in the correct direction.
> Check your version of workshop, if you are indeed running workshop 5,
> then you lose. You have to upgrade to Workshop 6 update 2. Solaris 8 on
> Sparc is not supported by Workshop 5... Check the inside front cover of
> the Workshop, or the release notes under system requirements.
>
> Bettendorf, Cristian wrote:
>
> > Hi,
> >
> > has somebody compiled & used the stuff on a Solaris 8 machine in 64 bit
> > mode?
> >
> > I started a short test and it looks that the stuff is not working and
must
> > be ported to native 64bit platforms.
> >
> > OS: SunOS 5.8 Generic_108528-04 sun4u sparc SUNW,Ultra-80
> > CC: WorkShop Compilers 5.0 98/12/15 C++ 5.0
> >
> > I tested first only the snmpget example from the snmp++ package, the
> > compile+link step was OK, here the used options: -D_XPG4_EXTENDED -Dsun
> > -D__unix -pta -xtarget=ultra  -xarch=v9  -KPIC -mt  -g
> > -D_POSIX_PTHREAD_SEMANTICS
> >
> > Now a short test run return errors:
> >
> > $snmpget 127.0.0.1
> > Get from 127.0.0.1/161 SNMPV1 Retries=1 Timeout=100ms Community=public
> > Get error, SNMP: Response PDU Too Big
> >
> >
> > Compiled as 32bit stuff, all works fine. Any hints?
> >
> > Thanks in advance
> > Cristian
> >
> >
> >
>
> --
> Bruce J. Carter
> ASAP
> 1771 International Pkwy #129
> Richardson, TX. 75081
> phone: 972.783.1000x17
> fax:   972.783.1166
> email: bjcarter____asapit.com