December 2009 - Libsmi - lists.ibr.cs.tu-bs.de

libsmi/smidump 0.4.8 problem: SYSAPPL-MIB::sysApplPastRunMaxRows SYNTAX Upper Bound
by Jens Engel 18 Mar '11

18 Mar '11

smidump 0.4.8 (up to rev13631 and maybe never) have a problem with the following SMI construct: -- FROM libsmi distributed SYSAPPL-MIB: sysApplPastRunMaxRows OBJECT-TYPE SYNTAX Unsigned32 (0..'ffffffff'h) ... NOTE: 0xFFFFFFFF = 2^32-1 = 4 294 967 295 when you try to convert the provided MIB via: smidump --format=smiv2 SYSAPPL-MIB ... you get the following output for libsmi 0.4.7 and 0.4.8. NOTE: Upper syntax bound is wrong in both cases. === modified file 'IETF/mibs/SYSAPPL-MIB.mib' --- IETF/mibs/SYSAPPL-MIB.mib 2009-03-28 19:03:48 +0000 +++ IETF/mibs/SYSAPPL-MIB.mib 2009-05-04 16:57:29 +0000 @@ -1038,7 +1038,7 @@ ::= { sysApplElmtPastRunEntry 11 } sysApplPastRunMaxRows OBJECT-TYPE - SYNTAX Unsigned32 (0..1134880) -- smidump 0.4.7 output + SYNTAX Unsigned32 (0..1134864) -- smidump 0.4.8 rev13631 (post-release) NOTE: Output of SYNTAX upper bound varies. WEIRD: The conversion to format=python leads to the correct result. Without looking at the source code, I assume that the hex-string to integer conversion has a problem. Ciao, Jens Engel Jens Engel mailto:jens_engel@t-online.de mailto:jens.engel

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[patch] to fix MS build with nmake and gmake
by Claus Klein 11 Jan '10

11 Jan '10

Hi, I had to build libsmi with MSVC 2005 and had some little problems to build it from last released distribution. Too there was a problem with 'make checkdist' on unix (MAC-OX) //regards Claus Changelog: Missing files in libsmi-0.4.8.tar.gz: dump-svg-script.h config.nmake smi.def Note that some files needs to be patched (CK) config.nmake change default install path and add missing install dir: MIBROOT = c:/usr/share/smi/mibs PIBROOT = c:/usr/share/smi/pibs INSTROOT = c:\usr INCDIR = $(INSTROOT)\include DEFINES = $(DEBUG) -D_CRT_SECURE_NO_DEPRECATE=1 -DYY_NO_UNISTD_H GNUmakefile and Makefile: substitude 'rm -f' with '$(RM)' to fix nmake clean config INSTROOT = c:\usr config MIBDIR = $(INSTROOT)\share\smi\mibs ignore errors with MKDIR! install smi.h to $(INCDIR) config.h.in change default config path prefix to c:\usr\etc\smi win.h add missing functions: #define isatty _isatty #define fileno _fileno ../lib/smi.h.in rename c++ reserved parameter class to classname: extern SmiClass *smiGetClass(SmiModule *smiModulePtr,char *classname); ../lib/util.c: #include win.h ../tools/Makefile.am comment out the line with 'MOSTLYCLEANFILES = dump-svg-script.h'

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Smidump-trap
by Jois, Diwakar (NSN - IN/Bangalore) 24 Dec '09

24 Dec '09

>Hi, > > Smidump tool does not generate any output (xsd format) for SNMP notifications (trap). Any reasons for not supporting traps in smidump? Please let me know your comment. > >With Best Regards, >Diwakar

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Handling incomplete/incorrect MIB
by Vincent Bernat 21 Dec '09

21 Dec '09

Hi! When a MIB is incomplete (because for example, there is a missing MIB which should have been imported), it is not possible to retrieve nodes that are not resolvable to an OID (which is good). However, it is still possible to retrieve nodes by their name. For example : $ cat test.mib TEST-MIB DEFINITIONS ::= BEGIN IMPORTS inexistentObject FROM INEXISTENT-MIB; myNode OBJECT IDENTIFIER ::= { inexistentObject 1 } END $ smiquery -p test.mib node TEST-MIB::myNode MibNode: TEST-MIB::myNode OID: 1414743380.1112100141 Declaration: <value-assignment> NodeKind: node The OID is bogus. Sometimes, libsmi will just segfault. If I use smidump, it is able to detect that the MIB is bogus. If I force dump (with -k), it gives me an empty MIB because the bogus node is not added to the list of nodes. smidump detects the problem by looking at "conformance" attribute in smi_module structure. I don't find any documentation about this. Is it the same conformance level as described in smilint(1)? Therefore, if I load a MIB how should I test conformance level? - (module->conformance) && (module->conformance >= 1) - (module->conformance) && (module->conformance > 1) Thanks! -- BOFH excuse #413: Cow-tippers tipped a cow onto the server.

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