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HI,
I'm Rok. I'm a beginner to snmp. I have some problems to develop snmp agent. What I to do is to modify receive() function in snmpd.c for my
own operation.
I should get all the get/set messages from nms, and parse those, and response. I had read some mails referring to this subject.. but I can't still solve the problem. -- OS : Sun Solaris 5.8
1. Can I use snmp agent in my own program? if so, could you tell me the all the included files list ?(eg. header files, libararies, functions) I can see below codes in receive() function (in snmpd.c)
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for (i = 0; i < external_readfdlen; i++) { FD_SET(external_readfd[i], &readfds); if (external_readfd[i] >= numfds) numfds = external_readfd[i] + 1; } ------------------------------------------------------ what can I use the first argument of
FD_SET(external_readfd)?
external_readfd are defined in agent_registry.h as below line extern int
external_readfd[NUM_EXTERNAL_FDS],
external_readfdlen;
extern void (*external_readfdfunc[NUM_EXTERNAL_FDS]) (int, void *); 2. should I define the value of "external_readfdlen" ?
3. "external_readfdfunc" is the callback function that receive the Get/Set message? 4. if so, How can I defint "external_readfdfunc"( what is the first/second arguments?) If snmpd receives Get/Set message from nms, it responses the message automatically. I think snmpd parse the asn.1 packet and make response PDU, and send it to nms. Is it right? If nms send some request PDUs which could be parsed automatically, shoud I parse and encode it? (eg. if the message should be parsed only between nms and snmp agent) Somebody advised me that I should use ASN.1 parser/encoder such as "snacc"
to solve this problem.
Should I install "snacc"? 5. If I make snmp-agent embeded in my program, should I make a ~.conf
file(like snmpd.conf)?
I have to make snmp-agent as fast as I can.
If you answer the questions, that will great helpful for me. And I'm sorry I wrote too many questions. Thank you. |
