Hi,
I posted before and I got a very helpful reply from Dave but I can't
find the thread.
It worked on the application I was working on at the time but in another
function snmp_parse_oid seems to corrupt some memory.
I'm trying to build an agent to handle ASN_OBJECT_ID types. Everywhere
in my application code i define the OIDs as a string.
char vendor[TR_MIB_MAX_OID_LEN] = "1.3.6.1.4.1.28215";
inventory[idx] = vendor;
tr_mib_add_item(context, 3, "vendortype", "entPhysicalVendorType",
TR_MIB_OID,TR_MIB_RO, NULL,NULL, NULL, 0, 0, &(inventory[0].vendor), w);
agent :
case TR_MIB_OID:
value = val->s;
snmp_parse_oid(value,root,&rootlen);
TR_DEBUG_D(TR_SNMP_DEBUG_REQ, "Returning value type
ASN_OBJECT_ID, value %s", value);
snmp_set_var_typed_value(idx, ASN_OBJECT_ID,(char
*)&root,rootlen*sizeof(int));
break;
**it's exactly the same application of the code before in a different
function used exactly the same way**
when i do an snmpwalk of the inventory, it crashes right after printing
out the OIDs.
On the debugger :
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1024 (LWP 485)]
0xb7d1aa64 in strchr () from /lib/libc.so.0
(gdb) bt
#0 0xb7d1aa64 in strchr () from /lib/libc.so.0
#1 0xb7e99ac0 in snmp_parse_oid (argv=0x0, root=0xbfbeec80,
rootlen=0xbfbeec7c) at mib.c:5820
#2 0x080744ae in _tr_mib_set_scalar (item=0xb785afb8, instance={{i =
22, s = 0x16 <Address 0x16 out of bounds>}}, idx=0xb5459db4)
at /u0/dev/wls_raisom/3route_lib/tr_mib_agent.c:125
#3 0x080755f4 in _tr_mib_table_handle_request (handler=0xb5ae6fe8,
reginfo=0xb5aeafd0, reqinfo=0xb5475ff4, requests=0xb5477fc0)
at /u0/dev/wls_raisom/3route_lib/tr_mib_agent.c:456
#4 0xb7e59b3a in netsnmp_call_next_handler (current=0x8075045,
reginfo=0xb5aeafd0, reqinfo=0xb5475ff4, requests=0xb5477fc0) at
agent_handler.c:435
#5 0xb7e3af43 in table_helper_handler (handler=0xb5af0fe8,
reginfo=0xb5aeafd0, reqinfo=0xb5475ff4, requests=0xb5477fc0) at table.c:619
#6 0xb7e59708 in netsnmp_call_handlers (reginfo=0xb5aeafd0,
reqinfo=0xb5475ff4, requests=0xb5477fc0) at agent_handler.c:435
#7 0xb7e4d005 in handle_var_requests (asp=0xb546ffb8) at snmp_agent.c:2491
#8 0xb7e4dc67 in handle_pdu (asp=0xb546ffb8) at snmp_agent.c:3280
#9 0xb7e4f01f in netsnmp_handle_request (asp=0xb546ffb8,
status=-1208834532) at snmp_agent.c:3076
#10 0xb7e4f60d in handle_snmp_packet (op=1, session=0xb546ffb8,
reqid=164, pdu=0x0, magic=0x0) at snmp_agent.c:1850
#11 0xb7eb3b22 in _sess_process_packet (sessp=0xb76a5ff0, sp=0xb76a9f08,
isp=0xb76a7fd0, transport=0xb7626fc0, opaque=0xb5455ffc, olength=4,
packetptr=0xb5444000 "\001\006",
length=1) at snmp_api.c:5360
#12 0xb7eb505e in _sess_read (sessp=0xb76a5ff0, fdset=0xbfbef730) at
snmp_api.c:5779
#13 0xb7eb5b09 in snmp_sess_read (sessp=0xb76a5ff0, fdset=0x3a3a) at
snmp_api.c:5798
#14 0xb7eb5b6d in snmp_read (fdset=0xbfbef730) at snmp_api.c:5412
#15 0x0805cc53 in tr_mibserver_start () at
/u0/dev/wls_raisom/3route_lib/tr_mibserver.c:573
#16 0x0804df0c in main () at /u0/dev/wls_raisom/3route_lite/trl_main.c:236
I think some memory was corrupted but I'm not sure where. Any ideas
would be most welcome.
Thanks!
Syikin.
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