enum {
	Aseq = 0x30,
	Aint = 0x02,
	Aoctstr = 0x04,
	Anull = 0x05,
	Aobjid = 0x06,
	Aipaddr = 0x40,
	Acounter = 0x41,
	Agauge = 0x42,
	Atimeticks = 0x43,

	Objidlen = 64,
	Pget = 0xa0,
	Pgetn, Presp, Pset, Ptrap,

	Mpdu = 4,
};

typedef struct Snmp Snmp;
typedef struct SnmpPdu SnmpPdu;

int a1readint(uchar*, int);
int a1readlen(uchar*, int*);
void Sfree(Snmp*);
Snmp* Salloc(void);
Snmp* Schkpdu(Snmp*, int);
int Sparse(void *buf, int nbuf, Snmp *dst);
void Sprint(Snmp*);
int Sunparse(Snmp *s, void *va, int na);
int dosnmp(int, Snmp*, Snmp*);

struct SnmpPdu {
	char objid[Objidlen];	/* "1.3.6.1.4.1.429.1.1.3.5.0" */
	int type;
	int len;
	union {
		int i;
		char *s;
	};
};

struct Snmp {
	int vers;
	int private;
	int type;
	int reqid;
	int estat, eindex;
	int npdu;
	int mpdu;
	SnmpPdu pdu[Mpdu];
};

int openlisten(char*);
void chat(char*, ...);
extern int chatty;