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asset.go
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asset.go
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// Copyright © by Jeff Foley 2017-2024. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
// SPDX-License-Identifier: Apache-2.0
package open_asset_model
import (
"strings"
)
type Asset interface {
Key() string
AssetType() AssetType
JSON() ([]byte, error)
}
type AssetType string
const (
AutnumRecord AssetType = "AutnumRecord"
AutonomousSystem AssetType = "AutonomousSystem"
ContactRecord AssetType = "ContactRecord"
DomainRecord AssetType = "DomainRecord"
EmailAddress AssetType = "EmailAddress"
File AssetType = "File"
Fingerprint AssetType = "Fingerprint"
FQDN AssetType = "FQDN"
IPAddress AssetType = "IPAddress"
IPNetRecord AssetType = "IPNetRecord"
Location AssetType = "Location"
Netblock AssetType = "Netblock"
NetworkEndpoint AssetType = "NetworkEndpoint"
Organization AssetType = "Organization"
Person AssetType = "Person"
Phone AssetType = "Phone"
Service AssetType = "Service"
SocketAddress AssetType = "SocketAddress"
Source AssetType = "Source"
TLSCertificate AssetType = "TLSCertificate"
URL AssetType = "URL"
)
var AssetList = []AssetType{
AutnumRecord, AutonomousSystem, ContactRecord, DomainRecord, EmailAddress, File,
Fingerprint, FQDN, IPAddress, IPNetRecord, Location, Netblock, NetworkEndpoint,
Organization, Person, Phone, Service, SocketAddress, Source, TLSCertificate, URL,
}
var locationRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
}
var phoneRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
}
var emailRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"domain": {FQDN},
}
var domainRecordRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"name_server": {FQDN},
"whois_server": {FQDN},
"registrar_contact": {ContactRecord},
"registrant_contact": {ContactRecord},
"admin_contact": {ContactRecord},
"technical_contact": {ContactRecord},
"billing_contact": {ContactRecord},
"associated_with": {AutnumRecord, DomainRecord, IPNetRecord},
}
var autnumRecordRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"whois_server": {FQDN},
"registrant": {ContactRecord},
"admin_contact": {ContactRecord},
"abuse_contact": {ContactRecord},
"technical_contact": {ContactRecord},
"rdap_url": {URL},
"associated_with": {AutnumRecord, DomainRecord, IPNetRecord},
}
var ipnetRecordRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"whois_server": {FQDN},
"registrant": {ContactRecord},
"admin_contact": {ContactRecord},
"abuse_contact": {ContactRecord},
"technical_contact": {ContactRecord},
"rdap_url": {URL},
"associated_with": {AutnumRecord, DomainRecord, IPNetRecord},
}
var personRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
}
var orgRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
}
var ipRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"port": {SocketAddress},
"ptr_record": {FQDN},
}
var netblockRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"contains": {IPAddress},
"registration": {IPNetRecord},
}
var autonomousSystemRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"announces": {Netblock},
"registration": {AutnumRecord},
}
var fileRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"url": {URL},
"contains": {ContactRecord, URL},
}
var fqdnRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"port": {NetworkEndpoint},
"a_record": {IPAddress},
"aaaa_record": {IPAddress},
"cname_record": {FQDN},
"ns_record": {FQDN},
"ptr_record": {FQDN},
"mx_record": {FQDN},
"srv_record": {FQDN, IPAddress},
"node": {FQDN},
"registration": {DomainRecord},
}
var tlscertRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"common_name": {FQDN},
"subject_contact": {ContactRecord},
"issuer_contact": {ContactRecord},
"san_dns_name": {FQDN},
"san_email_address": {EmailAddress},
"san_ip_address": {IPAddress},
"san_url": {URL},
"issuing_certificate": {TLSCertificate},
"issuing_certificate_url": {URL},
"ocsp_server": {URL},
"associated_with": {AutnumRecord, DomainRecord, IPNetRecord},
}
var socketAddressRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"service": {Service},
}
var networkEndpointRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"service": {Service},
}
var urlRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"domain": {FQDN},
"ip_address": {IPAddress},
"port": {SocketAddress, NetworkEndpoint},
"service": {Service},
"file": {File},
}
var fingerprintRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
}
var contactRecordRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"person": {Person},
"organization": {Organization},
"location": {Location},
"email": {EmailAddress},
"phone": {Phone},
"url": {URL},
}
var sourceRels = map[string][]AssetType{
"contact_record": {ContactRecord},
}
var serviceRels = map[string][]AssetType{
"source": {Source},
"monitored_by": {Source},
"fingerprint": {Fingerprint},
"certificate": {TLSCertificate},
}
// GetAssetOutgoingRelations returns the relation types allowed to be used
// when the subject is the asset type provided in the parameter.
// Providing an invalid subject causes a return value of nil.
func GetAssetOutgoingRelations(subject AssetType) []string {
relations := assetTypeRelations(subject)
if relations == nil {
return nil
}
var rtypes []string
for k := range relations {
rtypes = append(rtypes, k)
}
return rtypes
}
// GetAssetOutgoingRelations returns the relation types allowed to be used
// when the subject is the asset type provided in the parameter.
// Providing an invalid subject causes a return value of nil.
func GetTransformAssetTypes(subject AssetType, relation string) []AssetType {
relations := assetTypeRelations(subject)
if relations == nil {
return nil
}
rtype := strings.ToLower(relation)
if atypes, ok := relations[rtype]; ok {
return atypes
}
return nil
}
func assetTypeRelations(atype AssetType) map[string][]AssetType {
var relations map[string][]AssetType
switch atype {
case IPAddress:
relations = ipRels
case Netblock:
relations = netblockRels
case AutonomousSystem:
relations = autonomousSystemRels
case File:
relations = fileRels
case FQDN:
relations = fqdnRels
case NetworkEndpoint:
relations = networkEndpointRels
case DomainRecord:
relations = domainRecordRels
case AutnumRecord:
relations = autnumRecordRels
case IPNetRecord:
relations = ipnetRecordRels
case Location:
relations = locationRels
case Phone:
relations = phoneRels
case EmailAddress:
relations = emailRels
case Person:
relations = personRels
case Organization:
relations = orgRels
case TLSCertificate:
relations = tlscertRels
case SocketAddress:
relations = socketAddressRels
case URL:
relations = urlRels
case Fingerprint:
relations = fingerprintRels
case ContactRecord:
relations = contactRecordRels
case Source:
relations = sourceRels
case Service:
relations = serviceRels
default:
return nil
}
return relations
}
// ValidRelationship returns true if the relation is valid in the taxonomy
// when outgoing from the source asset type to the destination asset type.
func ValidRelationship(src AssetType, relation string, destination AssetType) bool {
atypes := GetTransformAssetTypes(src, relation)
if atypes == nil {
return false
}
for _, atype := range atypes {
if atype == destination {
return true
}
}
return false
}