/
image.go
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/
image.go
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/*
* Copyright 2018-present Open Networking Foundation
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package omci
import (
"encoding/hex"
"errors"
"github.com/google/gopacket"
"github.com/opencord/omci-lib-go"
me "github.com/opencord/omci-lib-go/generated"
log "github.com/sirupsen/logrus"
"math"
"strconv"
)
func ParseStartSoftwareDownloadRequest(omciPkt gopacket.Packet) (*omci.StartSoftwareDownloadRequest, error) {
msgLayer := omciPkt.Layer(omci.LayerTypeStartSoftwareDownloadRequest)
if msgLayer == nil {
err := "omci Msg layer could not be detected for LayerTypeStartSoftwareDownloadRequest"
omciLogger.Error(err)
return nil, errors.New(err)
}
msgObj, msgOk := msgLayer.(*omci.StartSoftwareDownloadRequest)
if !msgOk {
err := "omci Msg layer could not be assigned for LayerTypeStartSoftwareDownloadRequest"
omciLogger.Error(err)
return nil, errors.New(err)
}
return msgObj, nil
}
func ParseDownloadSectionRequest(omciPkt gopacket.Packet) (*omci.DownloadSectionRequest, error) {
msgLayer := omciPkt.Layer(omci.LayerTypeDownloadSectionRequest)
if msgLayer == nil {
err := "omci Msg layer could not be detected for LayerTypeDownloadSectionRequest"
omciLogger.Error(err)
return nil, errors.New(err)
}
msgObj, msgOk := msgLayer.(*omci.DownloadSectionRequest)
if !msgOk {
err := "omci Msg layer could not be assigned for LayerTypeDownloadSectionRequest"
omciLogger.Error(err)
return nil, errors.New(err)
}
return msgObj, nil
}
func ParseEndSoftwareDownloadRequest(omciPkt gopacket.Packet) (*omci.EndSoftwareDownloadRequest, error) {
msgLayer := omciPkt.Layer(omci.LayerTypeEndSoftwareDownloadRequest)
if msgLayer == nil {
err := "omci Msg layer could not be detected for LayerTypeEndSoftwareDownloadRequest"
omciLogger.Error(err)
return nil, errors.New(err)
}
msgObj, msgOk := msgLayer.(*omci.EndSoftwareDownloadRequest)
if !msgOk {
err := "omci Msg layer could not be assigned for LayerTypeEndSoftwareDownloadRequest"
omciLogger.Error(err)
return nil, errors.New(err)
}
return msgObj, nil
}
func ParseActivateSoftwareRequest(omciPkt gopacket.Packet) (*omci.ActivateSoftwareRequest, error) {
msgLayer := omciPkt.Layer(omci.LayerTypeActivateSoftwareRequest)
if msgLayer == nil {
err := "omci Msg layer could not be detected for LayerTypeActivateSoftwareRequest"
omciLogger.Error(err)
return nil, errors.New(err)
}
msgObj, msgOk := msgLayer.(*omci.ActivateSoftwareRequest)
if !msgOk {
err := "omci Msg layer could not be assigned for LayerTypeActivateSoftwareRequest"
omciLogger.Error(err)
return nil, errors.New(err)
}
return msgObj, nil
}
func ParseCommitSoftwareRequest(omciPkt gopacket.Packet) (*omci.CommitSoftwareRequest, error) {
msgLayer := omciPkt.Layer(omci.LayerTypeCommitSoftwareRequest)
if msgLayer == nil {
err := "omci Msg layer could not be detected for LayerTypeCommitSoftwareRequest"
omciLogger.Error(err)
return nil, errors.New(err)
}
msgObj, msgOk := msgLayer.(*omci.CommitSoftwareRequest)
if !msgOk {
err := "omci Msg layer could not be assigned for LayerTypeCommitSoftwareRequest"
omciLogger.Error(err)
return nil, errors.New(err)
}
return msgObj, nil
}
func CreateStartSoftwareDownloadResponse(omciPkt gopacket.Packet, omciMsg *omci.OMCI) ([]byte, error) {
responeCode := me.Success
msgObj, err := ParseStartSoftwareDownloadRequest(omciPkt)
if err != nil {
responeCode = me.ProcessingError
}
omciLogger.WithFields(log.Fields{
"OmciMsgType": omciMsg.MessageType,
"TransCorrId": omciMsg.TransactionID,
"EntityInstance": msgObj.EntityInstance,
"WindowSize": msgObj.WindowSize,
"ImageSize": msgObj.ImageSize,
"NumberOfCircuitPacks": msgObj.NumberOfCircuitPacks,
"CircuitPacks": msgObj.CircuitPacks,
}).Debug("received-start-software-download-request")
response := &omci.StartSoftwareDownloadResponse{
MeBasePacket: omci.MeBasePacket{
EntityClass: msgObj.EntityClass,
EntityInstance: msgObj.EntityInstance,
},
WindowSize: msgObj.WindowSize,
Result: responeCode,
NumberOfInstances: 0, // NOTE this can't be bigger than 0 this we can populate downloadResults
MeResults: []omci.DownloadResults{}, // FIXME downloadResults is not exported
}
pkt, err := Serialize(omci.StartSoftwareDownloadResponseType, response, omciMsg.TransactionID)
if err != nil {
omciLogger.WithFields(log.Fields{
"Err": err,
}).Error("cannot-Serialize-CreateResponse")
return nil, err
}
log.WithFields(log.Fields{
"TxID": strconv.FormatInt(int64(omciMsg.TransactionID), 16),
"pkt": hex.EncodeToString(pkt),
}).Trace("omci-start-software-download-response")
return pkt, nil
}
func CreateDownloadSectionResponse(omciPkt gopacket.Packet, omciMsg *omci.OMCI) ([]byte, error) {
msgObj, err := ParseDownloadSectionRequest(omciPkt)
if err != nil {
return nil, err
}
omciLogger.WithFields(log.Fields{
"OmciMsgType": omciMsg.MessageType,
"TransCorrId": omciMsg.TransactionID,
"EntityInstance": msgObj.EntityInstance,
"SectionNumber": msgObj.SectionNumber,
}).Debug("received-download-section-request")
response := &omci.DownloadSectionResponse{
MeBasePacket: omci.MeBasePacket{
EntityClass: msgObj.EntityClass,
EntityInstance: msgObj.EntityInstance,
},
Result: me.Success,
SectionNumber: msgObj.SectionNumber,
}
pkt, err := Serialize(omci.DownloadSectionResponseType, response, omciMsg.TransactionID)
if err != nil {
return nil, err
}
log.WithFields(log.Fields{
"TxID": strconv.FormatInt(int64(omciMsg.TransactionID), 16),
"pkt": hex.EncodeToString(pkt),
}).Trace("omci-download-section-with-response-response")
return pkt, nil
}
func CreateEndSoftwareDownloadResponse(omciPkt gopacket.Packet, omciMsg *omci.OMCI, status me.Results) ([]byte, error) {
msgObj, err := ParseEndSoftwareDownloadRequest(omciPkt)
if err != nil {
return nil, err
}
omciLogger.WithFields(log.Fields{
"OmciMsgType": omciMsg.MessageType,
"TransCorrId": omciMsg.TransactionID,
"EntityInstance": msgObj.EntityInstance,
"Crc32": msgObj.CRC32,
"ImageSize": msgObj.ImageSize,
"NumberOfInstances": msgObj.NumberOfInstances,
"ImageInstances": msgObj.ImageInstances,
}).Debug("received-end-software-download-request")
response := &omci.EndSoftwareDownloadResponse{
MeBasePacket: omci.MeBasePacket{
EntityClass: msgObj.EntityClass,
EntityInstance: msgObj.EntityInstance,
},
Result: status,
NumberOfInstances: 0, // NOTE this can't be bigger than 0 this we can populate downloadResults
//MeResults: []omci.downloadResults{}, // FIXME downloadResults is not exported
}
pkt, err := Serialize(omci.EndSoftwareDownloadResponseType, response, omciMsg.TransactionID)
if err != nil {
return nil, err
}
log.WithFields(log.Fields{
"TxID": strconv.FormatInt(int64(omciMsg.TransactionID), 16),
"pkt": hex.EncodeToString(pkt),
}).Trace("omci-end-software-download-response")
return pkt, nil
}
func CreateActivateSoftwareResponse(omciPkt gopacket.Packet, omciMsg *omci.OMCI) ([]byte, error) {
msgObj, err := ParseActivateSoftwareRequest(omciPkt)
if err != nil {
return nil, err
}
omciLogger.WithFields(log.Fields{
"OmciMsgType": omciMsg.MessageType,
"TransCorrId": omciMsg.TransactionID,
"EntityInstance": msgObj.EntityInstance,
"ActivateFlags": msgObj.ActivateFlags,
}).Debug("received-activate-software-request")
response := &omci.ActivateSoftwareResponse{
MeBasePacket: omci.MeBasePacket{
EntityClass: msgObj.EntityClass,
EntityInstance: msgObj.EntityInstance,
},
Result: me.Success,
}
pkt, err := Serialize(omci.ActivateSoftwareResponseType, response, omciMsg.TransactionID)
if err != nil {
return nil, err
}
log.WithFields(log.Fields{
"TxID": strconv.FormatInt(int64(omciMsg.TransactionID), 16),
"pkt": hex.EncodeToString(pkt),
}).Trace("omci-activate-software-response")
return pkt, nil
}
func CreateCommitSoftwareResponse(omciPkt gopacket.Packet, omciMsg *omci.OMCI) ([]byte, error) {
msgObj, err := ParseCommitSoftwareRequest(omciPkt)
if err != nil {
return nil, err
}
omciLogger.WithFields(log.Fields{
"OmciMsgType": omciMsg.MessageType,
"TransCorrId": omciMsg.TransactionID,
"EntityInstance": msgObj.EntityInstance,
}).Debug("received-commit-software-request")
response := &omci.CommitSoftwareResponse{
MeBasePacket: omci.MeBasePacket{
EntityClass: msgObj.EntityClass,
EntityInstance: msgObj.EntityInstance,
},
}
pkt, err := Serialize(omci.CommitSoftwareResponseType, response, omciMsg.TransactionID)
if err != nil {
return nil, err
}
log.WithFields(log.Fields{
"TxID": strconv.FormatInt(int64(omciMsg.TransactionID), 16),
"pkt": hex.EncodeToString(pkt),
}).Trace("omci-commit-software-response")
return pkt, nil
}
func ComputeDownloadSectionsCount(pkt gopacket.Packet) int {
msgObj, err := ParseStartSoftwareDownloadRequest(pkt)
if err != nil {
omciLogger.Error("cannot-parse-start-software-download-request")
}
return int(math.Ceil(float64(msgObj.ImageSize) / float64(msgObj.WindowSize)))
}