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73
.../src/main/java/com/evolveum/midpoint/web/page/admin/workflow/dto/ProtectedWorkItemId.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| /* | ||
| * Copyright (c) 2010-2019 Evolveum | ||
| * | ||
| * 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 com.evolveum.midpoint.web.page.admin.workflow.dto; | ||
|
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| import com.evolveum.midpoint.prism.xml.XmlTypeConverter; | ||
| import com.evolveum.midpoint.schema.util.WfContextUtil; | ||
| import com.evolveum.midpoint.util.MiscUtil; | ||
| import com.evolveum.midpoint.util.exception.SystemException; | ||
| import com.evolveum.midpoint.xml.ns._public.common.common_3.WorkItemType; | ||
| import org.jetbrains.annotations.NotNull; | ||
|
|
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| import java.nio.charset.StandardCharsets; | ||
| import java.security.MessageDigest; | ||
| import java.security.NoSuchAlgorithmException; | ||
|
|
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| /** | ||
| * Protected version of work item ID in the form of "id:hash". | ||
| * | ||
| * It is to be used as part of URL used to display the work item. The hash is computed from selected parts of | ||
| * the work item so it is impossible to guess. | ||
| */ | ||
| public class ProtectedWorkItemId { | ||
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| @NotNull public final String id; | ||
| @NotNull public final String hash; | ||
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| private ProtectedWorkItemId(@NotNull String id, @NotNull String hash) { | ||
| this.id = id; | ||
| this.hash = hash; | ||
| } | ||
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| public static ProtectedWorkItemId fromExternalForm(@NotNull String externalForm) { | ||
| int i = externalForm.indexOf(':'); | ||
| if (i < 0) { | ||
| throw new IllegalArgumentException("Wrong work item ID format"); | ||
| } | ||
| return new ProtectedWorkItemId(externalForm.substring(0, i), externalForm.substring(i+1)); | ||
| } | ||
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| private static String createWorkItemHash(WorkItemType workItem) { | ||
| try { | ||
| String valueToHash = workItem.getExternalId() + ":" + | ||
| WfContextUtil.getTaskOid(workItem) + ":" + | ||
| XmlTypeConverter.toMillis(workItem.getCreateTimestamp()); | ||
| byte[] hashBytes = MessageDigest.getInstance("SHA-256").digest(valueToHash.getBytes(StandardCharsets.UTF_8)); | ||
| return MiscUtil.binaryToHex(hashBytes); | ||
| } catch (NoSuchAlgorithmException e) { | ||
| throw new SystemException("Couldn't compute message digest: " + e.getMessage(), e); | ||
| } | ||
| } | ||
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| public static String createExternalForm(WorkItemType workItem) { | ||
| return workItem.getExternalId() + ":" + createWorkItemHash(workItem); | ||
| } | ||
|
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| public boolean isCorrect(WorkItemType workItem) { | ||
| return hash.equals(createWorkItemHash(workItem)); | ||
| } | ||
| } |
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