Libsmi August 2007

libsmi@ibr.cs.tu-bs.de

4 participants
4 discussions

How do I get the size of an OBJECT STRING?
by Luis EG Ontanon 26 Aug '07

26 Aug '07

Hi, I'm in a "quest" to rewrite Wireshark's snmp dissector with the goals of improving "filterability" of snmp packets (at the same time we'll get rid of the net-snmp dependecy that depends on open-ssl whose license isn't GPL compatible). I believe being able to filter on indexes of conceptual tables is far more interesting that to filter on any given value of an object's instance. I already implemented extracting the integer based indexes and (to some degree) those based on implicit octet strings but I got stuck on fixed-length strings. I haven't been able to figure out how to obtain the fixed length of a non-implied object string index element given: elNode = smiGetElementNode(smiElementPtr) && elType = smiGetNodeType(elNode) && elType->basetype == SMI_BASETYPE_OCTETSTRING Any help would be welcome. BR Luis -- This information is top security. When you have read it, destroy yourself. -- Marshall McLuhan

3 4

lib/parser-smi.c (and other generated files) in svn tree
by Luis EG Ontanon 22 Aug '07

22 Aug '07

Hi, When doing a svn diff on the tree to generate a patch I found out that lib/parser-smi.c was actually checked in svn. Shouldn't generated files being kept outside of the svn repo? Luis -- This information is top security. When you have read it, destroy yourself. -- Marshall McLuhan

3 2

oldNodePtr->lastObjectPtr->export.name might be NULL
by Luis EG Ontanon 22 Aug '07

22 Aug '07

A small patch to avoid a NULL pointer being passed to strcmp() =================================================================== --- lib/parser-smi.y (revision 7128) +++ lib/parser-smi.y (working copy) @@ -6213,7 +6213,7 @@ $$ = objectPtr; thisParserPtr->parentNodePtr = $$->nodePtr; } else if (oldNodePtr && - oldNodePtr->lastObjectPtr && + oldNodePtr->lastObjectPtr && oldNodePtr->lastObjectPtr->export.name && strcmp(oldNodePtr->lastObjectPtr->export.name, $1)) { smiPrintError(thisParserPtr, ERR_OIDLABEL_CHANGED,

2 1

Re-distributing the MIBs collection
by Luis EG Ontanon 22 Aug '07

22 Aug '07

I'm on the process of rewriting Wireshark's snmp and most probably we'll be using libsmi. We would like to distribute libsmi's collection of MIBs along wireshark, can we? Thanks, Luis -- This information is top security. When you have read it, destroy yourself. -- Marshall McLuhan

2 1

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Libsmi August 2007