set.go - omci-lib-go - Gitiles

 /*
  * Copyright (c) 2018 - present.  Boling Consulting Solutions (bcsw.net)
  * Copyright 2020-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/binary"
 	"errors"
 	"fmt"
 	"github.com/google/gopacket"
 	me "github.com/opencord/omci-lib-go/v2/generated"
 )

 type SetRequest struct {
 	MeBasePacket
 	AttributeMask uint16
 	Attributes    me.AttributeValueMap
 }

 func (omci *SetRequest) String() string {
 	return fmt.Sprintf("%v, Mask: %#x, attributes: %v",
 		omci.MeBasePacket.String(), omci.AttributeMask, omci.Attributes)
 }

 // LayerType returns LayerTypeSetRequest
 func (omci *SetRequest) LayerType() gopacket.LayerType {
 	return LayerTypeSetRequest
 }

 // CanDecode returns the set of layer types that this DecodingLayer can decode
 func (omci *SetRequest) CanDecode() gopacket.LayerClass {
 	return LayerTypeSetRequest
 }

 // NextLayerType returns the layer type contained by this DecodingLayer.
 func (omci *SetRequest) NextLayerType() gopacket.LayerType {
 	return gopacket.LayerTypePayload
 }

 // DecodeFromBytes decodes the given bytes of a Set Request into this layer
 func (omci *SetRequest) DecodeFromBytes(data []byte, p gopacket.PacketBuilder) error {
 	// Common ClassID/EntityID decode in msgBase
 	var hdrSize int
 	if omci.Extended {
 		hdrSize = 6 + 2
 	} else {
 		hdrSize = 4 + 2
 	}
 	err := omci.MeBasePacket.DecodeFromBytes(data, p, hdrSize)
 	if err != nil {
 		return err
 	}
 	meDefinition, omciErr := me.LoadManagedEntityDefinition(omci.EntityClass,
 		me.ParamData{EntityID: omci.EntityInstance})
 	if omciErr.StatusCode() != me.Success {
 		return omciErr.GetError()
 	}
 	// ME needs to support Set
 	if !me.SupportsMsgType(meDefinition, me.Set) {
 		return me.NewProcessingError("managed entity does not support Set Message-Type")
 	}
 	offset := hdrSize - 2
 	omci.AttributeMask = binary.BigEndian.Uint16(data[offset:])

 	// Attribute decode
 	omci.Attributes, err = meDefinition.DecodeAttributes(omci.AttributeMask, data[hdrSize:], p, byte(SetRequestType))
 	if err != nil {
 		return err
 	}
 	// Validate all attributes support write
 	for attrName := range omci.Attributes {
 		attr, err := me.GetAttributeDefinitionByName(meDefinition.GetAttributeDefinitions(), attrName)
 		if err != nil {
 			return err
 		}
 		if attr.Index != 0 && !me.SupportsAttributeAccess(*attr, me.Write) {
 			msg := fmt.Sprintf("attribute '%v' does not support write access", attrName)
 			return me.NewProcessingError(msg)
 		}
 	}
 	if eidDef, eidDefOK := meDefinition.GetAttributeDefinitions()[0]; eidDefOK {
 		omci.Attributes[eidDef.GetName()] = omci.EntityInstance
 		return nil
 	}
 	return me.NewProcessingError("All Managed Entities have an EntityID attribute")
 }

 func decodeSetRequest(data []byte, p gopacket.PacketBuilder) error {
 	omci := &SetRequest{}
 	omci.MsgLayerType = LayerTypeSetRequest
 	return decodingLayerDecoder(omci, data, p)
 }

 func decodeSetRequestExtended(data []byte, p gopacket.PacketBuilder) error {
 	omci := &SetRequest{}
 	omci.MsgLayerType = LayerTypeSetRequest
 	omci.Extended = true
 	return decodingLayerDecoder(omci, data, p)
 }

 // SerializeTo provides serialization of an Set Request message
 func (omci *SetRequest) SerializeTo(b gopacket.SerializeBuffer, _ gopacket.SerializeOptions) error {
 	// Basic (common) OMCI Header is 8 octets, 10
 	err := omci.MeBasePacket.SerializeTo(b)
 	if err != nil {
 		return err
 	}
 	meDefinition, omciErr := me.LoadManagedEntityDefinition(omci.EntityClass,
 		me.ParamData{EntityID: omci.EntityInstance})
 	if omciErr.StatusCode() != me.Success {
 		return omciErr.GetError()
 	}
 	// ME needs to support Set
 	if !me.SupportsMsgType(meDefinition, me.Set) {
 		return me.NewProcessingError("managed entity does not support Set Message-Type")
 	}
 	// Validate all attributes support write
 	for attrName := range omci.Attributes {
 		attr, err := me.GetAttributeDefinitionByName(meDefinition.GetAttributeDefinitions(), attrName)
 		if err != nil {
 			return err
 		}
 		// Do not test for write of Entity ID in the attribute list
 		if attr.Index != 0 && !me.SupportsAttributeAccess(*attr, me.Write) {
 			// TODO: Check ITU spec to see if this should be listed as a failed
 			//       attribute and not a processing error.
 			msg := fmt.Sprintf("attribute '%v' does not support write access", attrName)
 			return me.NewProcessingError(msg)
 		}
 	}
 	var maskOffset int
 	var bytesAvailable int
 	if omci.Extended {
 		maskOffset = 2
 		bytesAvailable = MaxExtendedLength - 12 - 4
 	} else {
 		maskOffset = 0
 		bytesAvailable = MaxBaselineLength - 10 - 8
 	}
 	// Attribute serialization
 	attributeBuffer := gopacket.NewSerializeBuffer()
 	err, _ = meDefinition.SerializeAttributes(omci.Attributes, omci.AttributeMask, attributeBuffer,
 		byte(SetRequestType), bytesAvailable, false)

 	bytes, err := b.AppendBytes(maskOffset + 2 + len(attributeBuffer.Bytes()))
 	if err != nil {
 		return err
 	}
 	if omci.Extended {
 		binary.BigEndian.PutUint16(bytes, uint16(len(attributeBuffer.Bytes())+2))
 	}
 	binary.BigEndian.PutUint16(bytes[maskOffset:], omci.AttributeMask)
 	copy(bytes[maskOffset+2:], attributeBuffer.Bytes())
 	return nil
 }

 type SetResponse struct {
 	MeBasePacket
 	Result                   me.Results
 	UnsupportedAttributeMask uint16
 	FailedAttributeMask      uint16
 }

 func (omci *SetResponse) String() string {
 	return fmt.Sprintf("%v, Result: %d (%v), Unsupported Mask: %#x, Failed Mask: %#x",
 		omci.MeBasePacket.String(), omci.Result, omci.Result, omci.UnsupportedAttributeMask,
 		omci.FailedAttributeMask)
 }

 // LayerType returns LayerTypeSetResponse
 func (omci *SetResponse) LayerType() gopacket.LayerType {
 	return LayerTypeSetResponse
 }

 // CanDecode returns the set of layer types that this DecodingLayer can decode
 func (omci *SetResponse) CanDecode() gopacket.LayerClass {
 	return LayerTypeSetResponse
 }

 // NextLayerType returns the layer type contained by this DecodingLayer.
 func (omci *SetResponse) NextLayerType() gopacket.LayerType {
 	return gopacket.LayerTypePayload
 }

 // DecodeFromBytes decodes the given bytes of a Set Response into this layer
 func (omci *SetResponse) DecodeFromBytes(data []byte, p gopacket.PacketBuilder) error {
 	// Common ClassID/EntityID decode in msgBase
 	var hdrSize int
 	if omci.Extended {
 		hdrSize = 6 + 1 // Plus 4 more if result = 9
 	} else {
 		hdrSize = 4 + 5
 	}
 	err := omci.MeBasePacket.DecodeFromBytes(data, p, hdrSize)
 	if err != nil {
 		return err
 	}
 	entity, omciErr := me.LoadManagedEntityDefinition(omci.EntityClass,
 		me.ParamData{EntityID: omci.EntityInstance})
 	if omciErr.StatusCode() != me.Success {
 		return omciErr.GetError()
 	}
 	// ME needs to support Set
 	if !me.SupportsMsgType(entity, me.Set) {
 		return me.NewProcessingError("managed entity does not support the Set Message-Type")
 	}
 	offset := hdrSize - 5
 	omci.Result = me.Results(data[offset])

 	if omci.Result == me.AttributeFailure {
 		// Optional attribute masks (4 octets) is required
 		if len(data) < hdrSize+4 {
 			p.SetTruncated()
 			return errors.New("frame too small")
 		}
 		omci.UnsupportedAttributeMask = binary.BigEndian.Uint16(data[offset+1:])
 		omci.FailedAttributeMask = binary.BigEndian.Uint16(data[offset+3:])
 	}
 	return nil
 }

 func decodeSetResponse(data []byte, p gopacket.PacketBuilder) error {
 	omci := &SetResponse{}
 	omci.MsgLayerType = LayerTypeSetResponse
 	return decodingLayerDecoder(omci, data, p)
 }

 func decodeSetResponseExtended(data []byte, p gopacket.PacketBuilder) error {
 	omci := &SetResponse{}
 	omci.MsgLayerType = LayerTypeSetResponse
 	omci.Extended = true
 	return decodingLayerDecoder(omci, data, p)
 }

 // SerializeTo provides serialization of an Set Response message
 func (omci *SetResponse) SerializeTo(b gopacket.SerializeBuffer, _ gopacket.SerializeOptions) error {
 	// Basic (common) OMCI Header is 8 octets, 10

 	err := omci.MeBasePacket.SerializeTo(b)
 	if err != nil {
 		return err
 	}
 	entity, omciErr := me.LoadManagedEntityDefinition(omci.EntityClass,
 		me.ParamData{EntityID: omci.EntityInstance})
 	if omciErr.StatusCode() != me.Success {
 		return omciErr.GetError()
 	}
 	// ME needs to support Set
 	if !me.SupportsMsgType(entity, me.Set) {
 		return me.NewProcessingError("managed entity does not support the Set Message-Type")
 	}
 	var offset, length int
 	if omci.Extended {
 		offset = 2
 		length = 1
 		if omci.Result == me.AttributeFailure {
 			length += 4
 		}
 	} else {
 		offset = 0
 		length = 5
 	}
 	bytes, err := b.AppendBytes(offset + length)
 	if err != nil {
 		return err
 	}

 	if omci.Extended {
 		binary.BigEndian.PutUint16(bytes, uint16(length))
 		bytes[offset] = byte(omci.Result)
 		if omci.Result == me.AttributeFailure {
 			binary.BigEndian.PutUint16(bytes[offset+1:], omci.UnsupportedAttributeMask)
 			binary.BigEndian.PutUint16(bytes[offset+3:], omci.FailedAttributeMask)
 		}
 	} else {
 		bytes[offset] = byte(omci.Result)
 		binary.BigEndian.PutUint16(bytes[offset+1:], omci.UnsupportedAttributeMask)
 		binary.BigEndian.PutUint16(bytes[offset+3:], omci.FailedAttributeMask)
 	}
 	return nil
 }
	/*
	* Copyright (c) 2018 - present. Boling Consulting Solutions (bcsw.net)
	* Copyright 2020-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/binary"
	"errors"
	"fmt"
	"github.com/google/gopacket"
	me "github.com/opencord/omci-lib-go/v2/generated"
	)

	type SetRequest struct {
	MeBasePacket
	AttributeMask uint16
	Attributes me.AttributeValueMap
	}

	func (omci *SetRequest) String() string {
	return fmt.Sprintf("%v, Mask: %#x, attributes: %v",
	omci.MeBasePacket.String(), omci.AttributeMask, omci.Attributes)
	}

	// LayerType returns LayerTypeSetRequest
	func (omci *SetRequest) LayerType() gopacket.LayerType {
	return LayerTypeSetRequest
	}

	// CanDecode returns the set of layer types that this DecodingLayer can decode
	func (omci *SetRequest) CanDecode() gopacket.LayerClass {
	return LayerTypeSetRequest
	}

	// NextLayerType returns the layer type contained by this DecodingLayer.
	func (omci *SetRequest) NextLayerType() gopacket.LayerType {
	return gopacket.LayerTypePayload
	}

	// DecodeFromBytes decodes the given bytes of a Set Request into this layer
	func (omci *SetRequest) DecodeFromBytes(data []byte, p gopacket.PacketBuilder) error {
	// Common ClassID/EntityID decode in msgBase
	var hdrSize int
	if omci.Extended {
	hdrSize = 6 + 2
	} else {
	hdrSize = 4 + 2
	}
	err := omci.MeBasePacket.DecodeFromBytes(data, p, hdrSize)
	if err != nil {
	return err
	}
	meDefinition, omciErr := me.LoadManagedEntityDefinition(omci.EntityClass,
	me.ParamData{EntityID: omci.EntityInstance})
	if omciErr.StatusCode() != me.Success {
	return omciErr.GetError()
	}
	// ME needs to support Set
	if !me.SupportsMsgType(meDefinition, me.Set) {
	return me.NewProcessingError("managed entity does not support Set Message-Type")
	}
	offset := hdrSize - 2
	omci.AttributeMask = binary.BigEndian.Uint16(data[offset:])

	// Attribute decode
	omci.Attributes, err = meDefinition.DecodeAttributes(omci.AttributeMask, data[hdrSize:], p, byte(SetRequestType))
	if err != nil {
	return err
	}
	// Validate all attributes support write
	for attrName := range omci.Attributes {
	attr, err := me.GetAttributeDefinitionByName(meDefinition.GetAttributeDefinitions(), attrName)
	if err != nil {
	return err
	}
	if attr.Index != 0 && !me.SupportsAttributeAccess(*attr, me.Write) {
	msg := fmt.Sprintf("attribute '%v' does not support write access", attrName)
	return me.NewProcessingError(msg)
	}
	}
	if eidDef, eidDefOK := meDefinition.GetAttributeDefinitions()[0]; eidDefOK {
	omci.Attributes[eidDef.GetName()] = omci.EntityInstance
	return nil
	}
	return me.NewProcessingError("All Managed Entities have an EntityID attribute")
	}

	func decodeSetRequest(data []byte, p gopacket.PacketBuilder) error {
	omci := &SetRequest{}
	omci.MsgLayerType = LayerTypeSetRequest
	return decodingLayerDecoder(omci, data, p)
	}

	func decodeSetRequestExtended(data []byte, p gopacket.PacketBuilder) error {
	omci := &SetRequest{}
	omci.MsgLayerType = LayerTypeSetRequest
	omci.Extended = true
	return decodingLayerDecoder(omci, data, p)
	}

	// SerializeTo provides serialization of an Set Request message
	func (omci *SetRequest) SerializeTo(b gopacket.SerializeBuffer, _ gopacket.SerializeOptions) error {
	// Basic (common) OMCI Header is 8 octets, 10
	err := omci.MeBasePacket.SerializeTo(b)
	if err != nil {
	return err
	}
	meDefinition, omciErr := me.LoadManagedEntityDefinition(omci.EntityClass,
	me.ParamData{EntityID: omci.EntityInstance})
	if omciErr.StatusCode() != me.Success {
	return omciErr.GetError()
	}
	// ME needs to support Set
	if !me.SupportsMsgType(meDefinition, me.Set) {
	return me.NewProcessingError("managed entity does not support Set Message-Type")
	}
	// Validate all attributes support write
	for attrName := range omci.Attributes {
	attr, err := me.GetAttributeDefinitionByName(meDefinition.GetAttributeDefinitions(), attrName)
	if err != nil {
	return err
	}
	// Do not test for write of Entity ID in the attribute list
	if attr.Index != 0 && !me.SupportsAttributeAccess(*attr, me.Write) {
	// TODO: Check ITU spec to see if this should be listed as a failed
	// attribute and not a processing error.
	msg := fmt.Sprintf("attribute '%v' does not support write access", attrName)
	return me.NewProcessingError(msg)
	}
	}
	var maskOffset int
	var bytesAvailable int
	if omci.Extended {
	maskOffset = 2
	bytesAvailable = MaxExtendedLength - 12 - 4
	} else {
	maskOffset = 0
	bytesAvailable = MaxBaselineLength - 10 - 8
	}
	// Attribute serialization
	attributeBuffer := gopacket.NewSerializeBuffer()
	err, _ = meDefinition.SerializeAttributes(omci.Attributes, omci.AttributeMask, attributeBuffer,
	byte(SetRequestType), bytesAvailable, false)

	bytes, err := b.AppendBytes(maskOffset + 2 + len(attributeBuffer.Bytes()))
	if err != nil {
	return err
	}
	if omci.Extended {
	binary.BigEndian.PutUint16(bytes, uint16(len(attributeBuffer.Bytes())+2))
	}
	binary.BigEndian.PutUint16(bytes[maskOffset:], omci.AttributeMask)
	copy(bytes[maskOffset+2:], attributeBuffer.Bytes())
	return nil
	}

	type SetResponse struct {
	MeBasePacket
	Result me.Results
	UnsupportedAttributeMask uint16
	FailedAttributeMask uint16
	}

	func (omci *SetResponse) String() string {
	return fmt.Sprintf("%v, Result: %d (%v), Unsupported Mask: %#x, Failed Mask: %#x",
	omci.MeBasePacket.String(), omci.Result, omci.Result, omci.UnsupportedAttributeMask,
	omci.FailedAttributeMask)
	}

	// LayerType returns LayerTypeSetResponse
	func (omci *SetResponse) LayerType() gopacket.LayerType {
	return LayerTypeSetResponse
	}

	// CanDecode returns the set of layer types that this DecodingLayer can decode
	func (omci *SetResponse) CanDecode() gopacket.LayerClass {
	return LayerTypeSetResponse
	}

	// NextLayerType returns the layer type contained by this DecodingLayer.
	func (omci *SetResponse) NextLayerType() gopacket.LayerType {
	return gopacket.LayerTypePayload
	}

	// DecodeFromBytes decodes the given bytes of a Set Response into this layer
	func (omci *SetResponse) DecodeFromBytes(data []byte, p gopacket.PacketBuilder) error {
	// Common ClassID/EntityID decode in msgBase
	var hdrSize int
	if omci.Extended {
	hdrSize = 6 + 1 // Plus 4 more if result = 9
	} else {
	hdrSize = 4 + 5
	}
	err := omci.MeBasePacket.DecodeFromBytes(data, p, hdrSize)
	if err != nil {
	return err
	}
	entity, omciErr := me.LoadManagedEntityDefinition(omci.EntityClass,
	me.ParamData{EntityID: omci.EntityInstance})
	if omciErr.StatusCode() != me.Success {
	return omciErr.GetError()
	}
	// ME needs to support Set
	if !me.SupportsMsgType(entity, me.Set) {
	return me.NewProcessingError("managed entity does not support the Set Message-Type")
	}
	offset := hdrSize - 5
	omci.Result = me.Results(data[offset])

	if omci.Result == me.AttributeFailure {
	// Optional attribute masks (4 octets) is required
	if len(data) < hdrSize+4 {
	p.SetTruncated()
	return errors.New("frame too small")
	}
	omci.UnsupportedAttributeMask = binary.BigEndian.Uint16(data[offset+1:])
	omci.FailedAttributeMask = binary.BigEndian.Uint16(data[offset+3:])
	}
	return nil
	}

	func decodeSetResponse(data []byte, p gopacket.PacketBuilder) error {
	omci := &SetResponse{}
	omci.MsgLayerType = LayerTypeSetResponse
	return decodingLayerDecoder(omci, data, p)
	}

	func decodeSetResponseExtended(data []byte, p gopacket.PacketBuilder) error {
	omci := &SetResponse{}
	omci.MsgLayerType = LayerTypeSetResponse
	omci.Extended = true
	return decodingLayerDecoder(omci, data, p)
	}

	// SerializeTo provides serialization of an Set Response message
	func (omci *SetResponse) SerializeTo(b gopacket.SerializeBuffer, _ gopacket.SerializeOptions) error {
	// Basic (common) OMCI Header is 8 octets, 10

	err := omci.MeBasePacket.SerializeTo(b)
	if err != nil {
	return err
	}
	entity, omciErr := me.LoadManagedEntityDefinition(omci.EntityClass,
	me.ParamData{EntityID: omci.EntityInstance})
	if omciErr.StatusCode() != me.Success {
	return omciErr.GetError()
	}
	// ME needs to support Set
	if !me.SupportsMsgType(entity, me.Set) {
	return me.NewProcessingError("managed entity does not support the Set Message-Type")
	}
	var offset, length int
	if omci.Extended {
	offset = 2
	length = 1
	if omci.Result == me.AttributeFailure {
	length += 4
	}
	} else {
	offset = 0
	length = 5
	}
	bytes, err := b.AppendBytes(offset + length)
	if err != nil {
	return err
	}

	if omci.Extended {
	binary.BigEndian.PutUint16(bytes, uint16(length))
	bytes[offset] = byte(omci.Result)
	if omci.Result == me.AttributeFailure {
	binary.BigEndian.PutUint16(bytes[offset+1:], omci.UnsupportedAttributeMask)
	binary.BigEndian.PutUint16(bytes[offset+3:], omci.FailedAttributeMask)
	}
	} else {
	bytes[offset] = byte(omci.Result)
	binary.BigEndian.PutUint16(bytes[offset+1:], omci.UnsupportedAttributeMask)
	binary.BigEndian.PutUint16(bytes[offset+3:], omci.FailedAttributeMask)
	}
	return nil
	}