/*
* Set up a default session for running internal queries.
* This needs to be done before the config files are read,
* so that it is available for "monitor" directives...
*/
int
_init_default_iquery_session( int majorID, int minorID,
void *serverargs, void *clientarg)
{
char *secName = netsnmp_ds_get_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_INTERNAL_SECNAME);
if (secName)
netsnmp_query_set_default_session(
netsnmp_iquery_user_session(secName));
return SNMPERR_SUCCESS;
}
void
parse_expression(const char *token, char *line)
{
char buf[ SPRINT_MAX_LEN];
char ename[EXP_STR1_LEN+1];
oid name_buf[MAX_OID_LEN];
size_t name_len;
char *cp, *cp2;
struct expExpression *entry;
struct expObject *object;
netsnmp_session *sess = NULL;
int type=EXPVALTYPE_COUNTER;
int i=1;
DEBUGMSGTL(("disman:expr:conf", "Parsing expression config... "));
memset(buf, 0, sizeof(buf));
memset(ename, 0, sizeof(ename));
for (cp = copy_nword(line, buf, SPRINT_MAX_LEN);
;
cp = copy_nword(cp, buf, SPRINT_MAX_LEN)) {
if (buf[0] == '-' ) {
switch (buf[1]) {
case 't': /* type */
switch (buf[2]) {
case 'c': type = EXPVALTYPE_COUNTER; break;
case 'u': type = EXPVALTYPE_UNSIGNED; break;
case 't': type = EXPVALTYPE_TIMETICKS; break;
case 'i': type = EXPVALTYPE_INTEGER; break;
case 'a': type = EXPVALTYPE_IPADDRESS; break;
case 's': type = EXPVALTYPE_STRING; break;
case 'o': type = EXPVALTYPE_OID; break;
case 'C': type = EXPVALTYPE_COUNTER64; break;
}
break;
case 'u': /* user */
cp = copy_nword(cp, buf, SPRINT_MAX_LEN);
sess = netsnmp_iquery_user_session(buf);
break;
}
} else {
break;
}
}
memcpy(ename, buf, sizeof(ename));
/* cp = copy_nword(line, ename, sizeof(ename)); */
entry = expExpression_createEntry( "snmpd.conf", ename, 1 );
if (!entry)
return;
cp2 = entry->expExpression;
while (cp && *cp) {
/*
* Copy everything that can't possibly be a MIB
* object name into the expression field...
*/
/* XXX - TODO - Handle string literals */
if (!isalpha(*cp)) {
*cp2++ = *cp++;
continue;
}
/*
* ... and copy the defined functions across as well
* XXX - TODO
*/
/*
* Anything else is presumably a MIB object (or instance).
* Create an entry in the expObjectTable, and insert a
* corresponding parameter in the expression itself.
*/
name_len = MAX_OID_LEN;
cp = copy_nword(cp, buf, SPRINT_MAX_LEN);
snmp_parse_oid( buf, name_buf, &name_len );
object = expObject_createEntry( "snmpd.conf", ename, i, 1 );
memcpy( object->expObjectID, name_buf, name_len*sizeof(oid));
object->expObjectID_len = name_len;
object->flags |= EXP_OBJ_FLAG_VALID
| EXP_OBJ_FLAG_ACTIVE
| EXP_OBJ_FLAG_OWILD;
/*
* The first such object can also be used as the
* expExpressionPrefix
*/
if ( i == 1 ) {
memcpy( entry->expPrefix, name_buf, name_len*sizeof(oid));
entry->expPrefix_len = name_len;
object->flags |= EXP_OBJ_FLAG_PREFIX;
}
sprintf(cp2, "$%d", i++);
while (*cp2)
cp2++; /* Skip over this parameter */
}
if (sess)
entry->session = sess;
else
entry->session = netsnmp_query_get_default_session();
entry->expDeltaInterval = 10;
entry->expValueType = type;
entry->flags |= EXP_FLAG_VALID
| EXP_FLAG_ACTIVE;
expExpression_enable( entry );
DEBUGMSG(("disman:expr:conf", "(%s, %s)\n", ename,
entry->expExpression));
}
