Re: Bug #1251: snmpwalk function causes segfault

On Sun, Mar 21, 1999 at 06:09:55PM -0000, lemming@k332.feld.cvut.cz wrote: > From: lemming@k332.feld.cvut.cz > Operating system: Linux 2.2.1 > PHP version: 3.0.7 > PHP Bug Type: Reproduceable crash > Bug description: snmpwalk function causes segfault > > Hello. > > There is a bug in the snmpwalk() function when used with ucd-snmp > 3.6.1. This version of UCD frees the 'community' string on snmp_close(), > but PHP does not malloc this string - it passes pointer to variable. > > When following program is ran with PHP 3.0.7 and UCD 3.6.1, it > always crashes: > > <? > $a = snmpwalk("localhost","public","system"); > ?> > > BTW: Current implementation of SNMPWALK is useless - it should > return string-indexed array and not just array of values. You need > to know to which variable the value belongs. I discussed this already with Rasmus, but have not received an answer so far: ----------------------------------------------------------------------------- On Sun, Feb 28, 1999 at 12:42:41PM -0500, Rasmus Lerdorf wrote: > > Btw, I've been playing around with SNMP lately. Is there any way to get > > the key identifier when using snmpwalk? It's nice to know the value, but > > it does not make so much sence without knowing what it is. > > Don't think so, and it is actually very useful even without the key name. > It is of course not useful to do a full MIB walk, but if you are just > doing a sub-tree, then you know exaxtly what you are requesting and you > will get out an array containing that sub-tree. > > -Rasmus Hm... that's the prerequisite I don't like. Granted, my experience with snmp is very limited, but what, if I wanted to simply scan e.g. the interface tree which may hold entries for interfaces which are dynamically added/removed. It's late now, I'm tired and thinking hardly takes place: Would there be any drawback, if php3 would provide the user also with the key? ----------------------------------------------------------------------------- -- Regards, Sascha Schumann | Consultant | finger sas@schell.de | for PGP public key -- PHP Development Mailing List http://www.php.net/ To unsubscribe send an empty message to php-dev-unsubscribe@lists.php.net For help: php-dev-help@lists.php.net