Libsmi December 2004

libsmi@ibr.cs.tu-bs.de

7 participants
6 discussions

Libsmi 0.4.3 memory fault (Linux/gcc)
by Allen McIntosh 03 May '05

03 May '05

The libsmi parser memory faults when parsing mibs/ietf/DOT12-RPTR-MIB. Repeat by running smilint mibs/ietf/DOT12-RPTR-MIB after installing libsmi. This happened to me under RedHat 9 (gcc 3.2.2/x86) and RedHat 7.3 (gcc 2.96/x86). The parser usually runs off the rails thus: $ gdb /usr/local/bin/smilint [stuff omitted] (gdb) run mibs/ietf/DOT12-RPTR-MIB Starting program: /usr/local/bin/smilint mibs/ietf/DOT12-RPTR-MIB mibs/ietf/DOT12-RPTR-MIB:36: revision for last update is missing mibs/ietf/DOT12-RPTR-MIB:151: warning: use Integer32 instead of INTEGER in SMIv2 Program received signal SIGSEGV, Segmentation fault. 0x40037b15 in checkObjects (parserPtr=0xbffff5f0, modulePtr=0x80559a0) at parser-smi.y:220 220 if (objectPtr->nodePtr->parentPtr && (gdb) where #0 0x40037b15 in checkObjects (parserPtr=0xbffff5f0, modulePtr=0x80559a0) at parser-smi.y:220 #1 0x4003a26c in smiparse (parserPtr=0xbffff5f0) at parser-smi.y:1641 #2 0x40031021 in loadModule ( modulename=0xbffff841 "mibs/ietf/DOT12-RPTR-MIB", parserPtr=0x0) at data.c:3792 #3 0x40035110 in smiLoadModule (module=0xbffff841 "mibs/ietf/DOT12-RPTR-MIB") at smi.c:416 #4 0x080492f2 in main (argc=2, argv=0xbffff6f4) at smilint.c:314 #5 0x42017589 in __libc_start_main () from /lib/i686/libc.so.6 (gdb) print objectPtr->nodePtr->parentPtr $1 = (struct Node *) 0x62696d2f Running with ElectricFence and EF_PROTECT_BELOW on turns up a problem, if that helps. I can provide details if that would help.

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RE: [libsmi] import problem
by miksiu 22 Dec '04

22 Dec '04

Standard MIB SNMPv2-CONF has a import clause: IMPORTS ObjectName, NotificationName, ObjectSyntax FROM SNMPv2-SMI; and then during ObjectSyntax is imported, there is an error (CheckImport function returns a value 1), because cannot import ObjectSyntax and I don't know why. Maybe this is unimportant. Please, short answer. Regards Tom Styczynski

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import problem
by miksiu 20 Dec '04

20 Dec '04

Hi all! During working with libsmi library (0.4.1) I detect some problems. There is a CheckImport() function in data.c file, which returns a integer value. This value is equal to number of not imported items. This function is using in parser-smi.y file. I add some code and functions to libsmi to control this returned value and it works ok (my code return names of items which can't be imported or names of not existing modules). It allowed me to detect import error during importing ObjectSyntax item from SNMPv2-SMI module. I don't know why this error appears. I need some sugestions how can I repair this error. When I use oryginal code of 0.4.1 library and when in my lib file is : IMPORTS ObjectSyntax FROM SNMPv2-SMI the "n" variable in CheckImport() function equals 1, but normally there is no checking this returned value in parser-smi.y file. Please help me. Regards Tom Styczynski

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libsmi to C++
by Apostolos Manolitzas 14 Dec '04

14 Dec '04

Hello, reading through the library I discovered that it can genarate java and c modules from the MIB. Is it possible to generate c++ objects from a PIB? Has anyone achieved that? thanks for your time, Apostolos -- Apostolos Manolitzas | amanol(a)nospam.iit.demokritos.gr NCSR Demokritos | Telecommunications Engineer mob: +30 6972 172547 | tel: +30 210650 3000 ext.3167 pgp key at: http://www.ist-athena.org/~amanol/pgp.asc

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Python interface
by Keith Dart 02 Dec '04

02 Dec '04

In case anyone is interested I now have complete Python wrapper/interface for the libsmi. Well, the user/programmer interface is actually very different, but it does use the libsmi underneath. Let me know if you are interesting in it. It is part of my pyNMS package and you can download it from sourceforge. http://www.sourceforge.net/projects/pynms -- \/ \/ (O O) -- --------------------oOOo~(_)~oOOo---------------------------------------- Keith Dart <kdart(a)kdart.com> vcard: <http://www.kdart.com/~kdart/kdart.vcf> public key: ID: F3D288E4 URL: <http://www.kdart.com/~kdart/public.key> ============================================================================

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Re: smilint remembers named number in OID value assignment
by Frank Strauß 01 Dec '04

01 Dec '04

Thanks to all who contributed to this issue. I've just comitted a new revision to the libsmi SVN repository that handles OID and identifiers in the "NameAndNumberForm" more acurately, and also emits warnings such as... ./XXX-MIB:165: warning: object identifier for label `snmpDot3MauMgt' does not match previous label usage ./XXX-MIB:40: info: previous definition of `snmpDot3MauMgt' ./XXX-MIB:165: warning: label `snmpDot3MauMgtXXX' does not match previous label `snmpDot3MauMgt' for same object identifier ./XXX-MIB:40: info: previous definition of `snmpDot3MauMgt'

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Libsmi December 2004