Re: Net-snmp master agentx not speaking the same protocol as a perl subagent?

Hi again,

I found the issue, see below:

On Sun, July 20, 2008 18:18, Brice Figureau wrote:
> [snipped the whole trace]
> trace: agentx_parse_oid(): mibgroup/agentx/protocol.c, 1205:
> dumpv_recv:           OID: SNMPv2-SMI::enterprises.20267.200.1.6.0
> dumpx_recv:          00 00 00 00
> dumpv_recv:            Integer:	0 (0x00)
> dumpx_recv:          E8 83 84 B8
> dumpv_recv:            Integer:	3095692264 (0xB88483E8)
> trace: agentx_parse_varbind(): mibgroup/agentx/protocol.c, 1344:
> dumph_recv:         VarBind:
> trace: agentx_parse_varbind(): mibgroup/agentx/protocol.c, 1345:

agentx_parse_varbind was increasing the buffer pointer of 2 * sizeof(long)
after decoding a counter64. This is incorrect since on amd64 sizeof(long)
is 8 bytes and not 4 bytes. It was just then jumping over the next
varbind.

I attached a patch to fix this issue, which I'll also register on
sourceforge.

-- 
Brice Figureau

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--- agent/mibgroup/agentx/protocol.c.orig	2008-07-20 18:42:16.000000000 +0200
+++ agent/mibgroup/agentx/protocol.c	2008-07-20 18:43:17.000000000 +0200
@@ -1411,7 +1411,7 @@
 
         memcpy(data_buf, &tmp64, sizeof(tmp64));
 	*data_len = sizeof(tmp64);
-	bufp += 2 * sizeof(long);
+	bufp += 2 * 4;
 	*length -= 8;
         break;