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Merge pull request #99 from Fraunhofer-AISEC/uc-time-constraints
UC time constraints & more
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115
camel-processors/src/main/kotlin/de/fhg/aisec/ids/camel/processors/ContractFactory.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| /*- | ||
| * ========================LICENSE_START================================= | ||
| * camel-processors | ||
| * %% | ||
| * Copyright (C) 2022 Fraunhofer AISEC | ||
| * %% | ||
| * 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. | ||
| * =========================LICENSE_END================================== | ||
| */ | ||
| package de.fhg.aisec.ids.camel.processors | ||
|
|
||
| import de.fraunhofer.iais.eis.AbstractConstraint | ||
| import de.fraunhofer.iais.eis.Action | ||
| import de.fraunhofer.iais.eis.BinaryOperator | ||
| import de.fraunhofer.iais.eis.ConstraintBuilder | ||
| import de.fraunhofer.iais.eis.ContractOffer | ||
| import de.fraunhofer.iais.eis.ContractOfferBuilder | ||
| import de.fraunhofer.iais.eis.LeftOperand | ||
| import de.fraunhofer.iais.eis.PermissionBuilder | ||
| import de.fraunhofer.iais.eis.util.TypedLiteral | ||
| import org.apache.camel.Exchange | ||
| import java.net.URI | ||
|
|
||
| object ContractFactory { | ||
|
|
||
| fun buildContractOffer(requestedArtifact: URI, exchange: Exchange): ContractOffer { | ||
| // Docker image whitelisting | ||
| val dockerImageUris = ( | ||
| exchange.getProperty(Constants.UC_DOCKER_IMAGE_URIS) | ||
| // Legacy property name without "uc-" prefix | ||
| ?: exchange.getProperty("containerUri") | ||
| ?: "" | ||
| ).toString() | ||
| .split(Regex("\\s+")) | ||
| .map(String::trim) | ||
| .filter(String::isNotEmpty) | ||
| .map(URI::create) | ||
| .toList() | ||
| val contractDate = Utils.newGregorianCalendar() | ||
| val timeConstraints = mutableListOf<AbstractConstraint>() | ||
| // Add not after (BEFORE) usage constraint | ||
| exchange.getProperty(Constants.UC_NOT_AFTER_DATETIME)?.let { dateTime -> | ||
| timeConstraints += ConstraintBuilder() | ||
| ._leftOperand_(LeftOperand.POLICY_EVALUATION_TIME) | ||
| ._operator_(BinaryOperator.BEFORE) | ||
| ._rightOperand_( | ||
| TypedLiteral( | ||
| Utils.DATATYPE_FACTORY.newXMLGregorianCalendar(dateTime.toString()).toString(), | ||
| Utils.TYPE_DATETIMESTAMP | ||
| ) | ||
| ) | ||
| .build() | ||
| } | ||
| // Add not before (AFTER) usage constraint | ||
| exchange.getProperty(Constants.UC_NOT_BEFORE_DATETIME)?.let { dateTime -> | ||
| timeConstraints += ConstraintBuilder() | ||
| ._leftOperand_(LeftOperand.POLICY_EVALUATION_TIME) | ||
| ._operator_(BinaryOperator.AFTER) | ||
| ._rightOperand_( | ||
| TypedLiteral( | ||
| Utils.DATATYPE_FACTORY.newXMLGregorianCalendar(dateTime.toString()).toString(), | ||
| Utils.TYPE_DATETIMESTAMP | ||
| ) | ||
| ) | ||
| .build() | ||
| } | ||
| return ContractOfferBuilder() | ||
| ._contractDate_(contractDate) | ||
| ._contractStart_(contractDate) | ||
| // Contract end one year in the future | ||
| ._contractEnd_(contractDate.copy().apply { year += 1 }) | ||
| ._permission_( | ||
| if (dockerImageUris.isEmpty()) { | ||
| // If no Docker images have been specified, just use time constraints | ||
| listOf( | ||
| PermissionBuilder() | ||
| ._target_(requestedArtifact) | ||
| ._action_(listOf(Action.USE)) | ||
| ._constraint_( | ||
| timeConstraints | ||
| ) | ||
| .build() | ||
| ) | ||
| } else { | ||
| // If Docker images have been specified, combine each with the specified time constraints | ||
| dockerImageUris.map { | ||
| PermissionBuilder() | ||
| ._target_(requestedArtifact) | ||
| ._action_(listOf(Action.USE)) | ||
| ._constraint_( | ||
| listOf( | ||
| ConstraintBuilder() | ||
| ._leftOperand_(LeftOperand.SYSTEM) | ||
| ._operator_(BinaryOperator.SAME_AS) | ||
| ._rightOperandReference_(it) | ||
| .build() | ||
| ) + timeConstraints | ||
| ) | ||
| .build() | ||
| } | ||
| } | ||
| ) | ||
| .build() | ||
| } | ||
| } |
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