Esempi in C++ (Cpp) per snmp_append_outbound_varbind

Esempio n. 1

File: snmp_traps.c Progetto: ambrop72/badvpn

static err_t
snmp_trap_varbind_enc(struct snmp_msg_trap *trap, struct snmp_pbuf_stream *pbuf_stream, struct snmp_varbind *varbinds)
{
  struct snmp_asn1_tlv tlv;
  struct snmp_varbind *varbind;

  varbind = varbinds;

  SNMP_ASN1_SET_TLV_PARAMS(tlv, SNMP_ASN1_TYPE_SEQUENCE, 0, trap->vbseqlen);
  BUILD_EXEC( snmp_ans1_enc_tlv(pbuf_stream, &tlv) );

  while (varbind != NULL) {
    BUILD_EXEC( snmp_append_outbound_varbind(pbuf_stream, varbind) );

    varbind = varbind->next;
  }

  return ERR_OK;
}

Esempio n. 2

File: snmp_msg.c Progetto: geliang201201/lwip

static void 
snmp_process_varbind(struct snmp_request *request, struct snmp_varbind *vb, u8_t get_next)
{
  err_t err;
  struct snmp_node_instance node_instance;
  memset(&node_instance, 0, sizeof(node_instance));

  if (get_next) {
    struct snmp_obj_id result_oid;
    request->error_status = snmp_get_next_node_instance_from_oid(vb->oid.id, vb->oid.len, snmp_msg_getnext_validate_node_inst, request,  &result_oid, &node_instance);

    if (request->error_status == SNMP_ERR_NOERROR) {
      snmp_oid_assign(&vb->oid, result_oid.id, result_oid.len);
    }
  } else {
    request->error_status = snmp_get_node_instance_from_oid(vb->oid.id, vb->oid.len, &node_instance);

    if (request->error_status == SNMP_ERR_NOERROR) {
      /* use 'getnext_validate' method for validation to avoid code duplication (some checks have to be executed here) */
      request->error_status = snmp_msg_getnext_validate_node_inst(&node_instance, request);

      if (request->error_status != SNMP_ERR_NOERROR) {
        if (node_instance.release_instance != NULL) {
          node_instance.release_instance(&node_instance);
        }
      }
    }
  }

  if (request->error_status != SNMP_ERR_NOERROR)
  {
    if (request->error_status >= SNMP_VARBIND_EXCEPTION_OFFSET) {
      if (request->version == SNMP_VERSION_2c) {
        /* in SNMP v2c a varbind related exception is stored in varbind and not in frame header */
        vb->type = (SNMP_ASN1_CONTENTTYPE_PRIMITIVE | SNMP_ASN1_CLASS_CONTEXT | (request->error_status & SNMP_VARBIND_EXCEPTION_MASK));
        vb->value_len = 0;

        err = snmp_append_outbound_varbind(request, vb);
        if (err == ERR_OK) {
          /* we stored the exception in varbind -> go on */
          request->error_status = SNMP_ERR_NOERROR;
        } else if (err == ERR_BUF) {
          request->error_status = SNMP_ERR_TOOBIG;
        } else {
          request->error_status = SNMP_ERR_GENERROR;
        }
      }
    } else {
      /* according to RFC 1157/1905, all other errors only return genError */
      request->error_status = SNMP_ERR_GENERROR;
    }
  } else {
    vb->type = node_instance.asn1_type;
    vb->value_len = node_instance.get_value(&node_instance, vb->value);
    LWIP_ASSERT("SNMP_MAX_VALUE_SIZE is configured too low", (vb->value_len & ~SNMP_GET_VALUE_RAW_DATA) <= SNMP_MAX_VALUE_SIZE);

    err = snmp_append_outbound_varbind(request, vb);
    if (err == ERR_BUF) {
      request->error_status = SNMP_ERR_TOOBIG;
    } else if (err != ERR_OK) {
      request->error_status = SNMP_ERR_GENERROR;
    }

    if (node_instance.release_instance != NULL) {
      node_instance.release_instance(&node_instance);
    }
  }
}