static ssize_t build_snmp_metric_response(int64_t value, uint8_t type, uint8_t * buffer, int size, uint8_t * seq1, uint8_t * seq2, uint8_t * seq3) {
uint8_t oid_sz;
if (type == UWSGI_METRIC_GAUGE) {
buffer[size - 2] = SNMP_GAUGE;
oid_sz = snmp_int_to_snmp(value, SNMP_GAUGE, buffer + (size - 1));
}
else {
buffer[size - 2] = SNMP_COUNTER64;
oid_sz = snmp_int_to_snmp(value, SNMP_COUNTER64, buffer + (size - 1));
}
if (oid_sz < 1)
return -1;
oid_sz--;
buffer[1] += oid_sz;
*seq1 += oid_sz;
*seq2 += oid_sz;
*seq3 += oid_sz;
return size + oid_sz;
}
static int get_snmp_integer(uint8_t * ptr, uint64_t * val) {
uint16_t tlen;
int i, j;
uint8_t *cval = (uint8_t *) val;
tlen = *ptr;
if (tlen > 4)
return -1;
#ifdef UWSGI_DEBUG
uwsgi_debug("SNMP get integer TLEN %d %p\n", tlen, ptr);
#endif
j = 0;
#ifdef __BIG_ENDIAN__
for (i = 0; i < tlen; i++) {
#else
for (i = tlen - 1; i >= 0; i--) {
#endif
cval[j] = ptr[1 + i];
j++;
}
return tlen + 1;
}
static uint8_t snmp_int_to_snmp(uint64_t snmp_val, uint8_t oid_type, uint8_t * buffer) {
uint8_t tlen;
int i, j;
uint8_t *ptr = (uint8_t *) &snmp_val;
// check for counter, counter64 or gauge
if (oid_type == SNMP_COUNTER64) {
tlen = 8;
}
else if (oid_type == SNMP_NULL || oid_type == 0) {
tlen = 0;
}
else {
tlen = 4;
}
buffer[0] = tlen;
j = 1;
#ifdef __BIG_ENDIAN__
for (i = 0; i < tlen; i++) {
#else
for (i = tlen - 1; i >= 0; i--) {
#endif
buffer[j] = ptr[i];
j++;
}
return tlen + 1;
}
static ssize_t build_snmp_response(uint8_t oid1, uint8_t oid2, uint8_t * buffer, int size, uint8_t * seq1, uint8_t * seq2, uint8_t * seq3) {
uint64_t snmp_val;
uint8_t oid_sz;
uint8_t oid_type;
if (oid1 == 1) {
snmp_val = get_uwsgi_snmp_value(oid2, &oid_type);
}
else if (oid1 == 2) {
snmp_val = get_uwsgi_custom_snmp_value(oid2, &oid_type);
}
else {
return -1;
}
buffer[size - 2] = oid_type;
oid_sz = snmp_int_to_snmp(snmp_val, oid_type, buffer + (size - 1));
if (oid_sz < 1)
return -1;
oid_sz--;
buffer[1] += oid_sz;
*seq1 += oid_sz;
*seq2 += oid_sz;
*seq3 += oid_sz;
return size + oid_sz;
}
