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add code and pom to project
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‎pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>org.cryptomator</groupId>
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<artifactId>integrations-linux</artifactId>
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<version>0.1.0-SNAPSHOT</version>
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<name>integrations-linux</name>
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<description>Provides optional Linux services used by Cryptomator</description>
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<url>http://www.cryptomator.org</url>
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<scm>
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<connection>scm:git:[email protected]:cryptomator/integrations-linux.git</connection>
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<developerConnection>scm:git:[email protected]:cryptomator/integrations-linux.git</developerConnection>
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<url>[email protected]:cryptomator/integrations-linux.git</url>
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</scm>
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<developers>
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<developer>
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<name>Armin Schrenk</name>
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<email>[email protected]</email>
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<timezone>+1</timezone>
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<organization>Skymatic GmbH</organization>
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<organizationUrl>http://skymatic.de</organizationUrl>
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</developer>
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</developers>
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<licenses>
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<license>
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<name>GNU Affero General Public License (AGPL) version 3.0</name>
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<url>https://www.gnu.org/licenses/agpl.txt</url>
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<distribution>repo</distribution>
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</license>
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</licenses>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.release>11</maven.compiler.release>
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<api.version>0.1.1</api.version>
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<commons-lang3.version>3.11</commons-lang3.version>
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<secret-service.version>1.1.0</secret-service.version>
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<kdewallet.version>1.1.1</kdewallet.version>
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<jwt.version>3.10.3</jwt.version>
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<easybind.version>2.1.0</easybind.version>
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<guava.version>30.0-jre</guava.version>
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<dagger.version>2.22</dagger.version>
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<gson.version>2.8.6</gson.version>
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<slf4j.version>1.7.30</slf4j.version>
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<logback.version>1.2.3</logback.version>
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<junit.jupiter.version>5.6.2</junit.jupiter.version>
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</properties>
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<repositories>
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<repository>
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<id>bintray</id>
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<name>bintray</name>
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<url>https://jcenter.bintray.com</url>
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</repository>
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</repositories>
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<distributionManagement>
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<repository>
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<id>bintray-jcenter</id>
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<url>https://api.bintray.com/maven/cryptomator/maven/integrations-win/;publish=1</url>
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</repository>
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</distributionManagement>
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<dependencies>
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<dependency>
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<groupId>org.cryptomator</groupId>
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<artifactId>integrations-api</artifactId>
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<version>${api.version}</version>
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</dependency>
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<!-- Apache -->
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<dependency>
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<groupId>org.apache.commons</groupId>
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<artifactId>commons-lang3</artifactId>
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<version>${commons-lang3.version}</version>
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</dependency>
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<!-- Google -->
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<dependency>
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<groupId>com.google.guava</groupId>
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<artifactId>guava</artifactId>
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<version>${guava.version}</version>
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</dependency>
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<!-- secret-service lib -->
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<dependency>
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<groupId>de.swiesend</groupId>
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<artifactId>secret-service</artifactId>
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<version>${secret-service.version}</version>
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</dependency>
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<!-- kdewallet lib -->
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<dependency>
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<groupId>org.purejava</groupId>
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<artifactId>kdewallet</artifactId>
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<version>${kdewallet.version}</version>
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</dependency>
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<!-- Logging -->
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-simple</artifactId>
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<version>${slf4j.version}</version>
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<scope>test</scope>
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</dependency>
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<!-- Testing -->
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter</artifactId>
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<version>${junit.jupiter.version}</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<artifactId>maven-compiler-plugin</artifactId>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-surefire-plugin</artifactId>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-enforcer-plugin</artifactId>
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<executions>
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<execution>
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<id>check-preconditions</id>
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<goals>
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<goal>enforce</goal>
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</goals>
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<configuration>
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<rules>
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<requireOS>
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<family>unix</family>
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<name>Linux</name>
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<message>This build configuration requires Linux.</message>
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</requireOS>
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</rules>
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</configuration>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<artifactId>maven-source-plugin</artifactId>
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<version>3.2.0</version>
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<executions>
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<execution>
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<id>attach-sources</id>
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<goals>
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<goal>jar-no-fork</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<artifactId>maven-javadoc-plugin</artifactId>
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<version>3.2.0</version>
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<executions>
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<execution>
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<id>attach-javadocs</id>
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<goals>
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<goal>jar</goal>
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</goals>
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</execution>
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</executions>
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<configuration>
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<quiet>true</quiet>
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<release>11</release>
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<tags>
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<!-- workaround for "unknown tag: implNote", see https://blog.codefx.org/java/new-javadoc-tags/#Maven -->
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<tag>
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<name>apiNote</name>
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<placement>a</placement>
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<head>API Note:</head>
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</tag>
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<tag>
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<name>implSpec</name>
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<placement>a</placement>
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<head>Implementation Requirements:</head>
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</tag>
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<tag>
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<name>implNote</name>
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<placement>a</placement>
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<head>Implementation Note:</head>
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</tag>
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<tag><name>param</name></tag>
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<tag><name>return</name></tag>
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<tag><name>throws</name></tag>
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<tag><name>since</name></tag>
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<tag><name>version</name></tag>
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<tag><name>serialData</name></tag>
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<tag><name>see</name></tag>
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</tags>
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</configuration>
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</plugin>
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</plugins>
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<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
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<plugins>
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<!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
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<plugin>
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<artifactId>maven-clean-plugin</artifactId>
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<version>3.1.0</version>
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</plugin>
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<!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
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<plugin>
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<artifactId>maven-resources-plugin</artifactId>
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<version>3.0.2</version>
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</plugin>
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<plugin>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.8.1</version>
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</plugin>
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<plugin>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>3.0.0-M5</version>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-enforcer-plugin</artifactId>
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<version>3.0.0-M3</version>
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</plugin>
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<plugin>
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<artifactId>maven-jar-plugin</artifactId>
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<version>3.2.0</version>
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</plugin>
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<plugin>
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<artifactId>maven-install-plugin</artifactId>
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<version>3.0.0-M1</version>
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</plugin>
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<plugin>
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<artifactId>maven-deploy-plugin</artifactId>
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<version>3.0.0-M1</version>
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</plugin>
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<plugin>
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<artifactId>maven-project-info-reports-plugin</artifactId>
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<version>3.1.1</version>
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</plugin>
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</plugins>
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</pluginManagement>
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</build>
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</project>

‎src/main/java/org/cryptomator/linux/keychain/LinuxKDEWalletKeychainAccessImpl.java

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package org.cryptomator.linux.keychain;
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import org.cryptomator.integrations.keychain.KeychainAccessException;
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import org.cryptomator.integrations.keychain.KeychainAccessProvider;
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import org.freedesktop.dbus.connections.impl.DBusConnection;
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import org.freedesktop.dbus.exceptions.DBusException;
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import org.kde.KWallet;
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import org.kde.Static;
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import org.purejava.KDEWallet;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class LinuxKDEWalletKeychainAccessImpl implements KeychainAccessProvider {
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private static final Logger LOG = LoggerFactory.getLogger(LinuxKDEWalletKeychainAccessImpl.class);
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private final String FOLDER_NAME = "Cryptomator";
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private final String APP_NAME = "Cryptomator";
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private DBusConnection connection;
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private KDEWallet wallet;
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private int handle = -1;
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public LinuxKDEWalletKeychainAccessImpl() throws KeychainAccessException {
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try {
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connection = DBusConnection.getConnection(DBusConnection.DBusBusType.SESSION);
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} catch (DBusException e) {
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LOG.error("Connecting to D-Bus failed:", e);
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throw new KeychainAccessException("TODO", e); //FIXME
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}
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}
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@Override
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public boolean isSupported() {
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try {
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wallet = new KDEWallet(connection);
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return wallet.isEnabled();
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} catch (Exception e) {
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LOG.error("A KDEWallet could not be created:", e);
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return false;
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}
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}
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@Override
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public void storePassphrase(String key, CharSequence passphrase) throws KeychainAccessException {
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try {
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if (walletIsOpen() &&
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!(wallet.hasEntry(handle, FOLDER_NAME, key, APP_NAME)
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&& wallet.entryType(handle, FOLDER_NAME, key, APP_NAME) == 1)
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&& wallet.writePassword(handle, FOLDER_NAME, key, passphrase.toString(), APP_NAME) == 0) {
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LOG.debug("Passphrase successfully stored.");
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} else {
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LOG.debug("Passphrase was not stored.");
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}
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} catch (Exception e) {
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LOG.error("Storing the passphrase failed:", e);
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throw new KeychainAccessException("TODO", e); //FIXME
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}
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}
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@Override
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public char[] loadPassphrase(String key) throws KeychainAccessException {
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String password = "";
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try {
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if (walletIsOpen()) {
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password = wallet.readPassword(handle, FOLDER_NAME, key, APP_NAME);
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LOG.debug("loadPassphrase: wallet is open.");
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} else {
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LOG.debug("loadPassphrase: wallet is closed.");
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}
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return (password.equals("")) ? null : password.toCharArray();
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} catch (Exception e) {
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LOG.error("Loading the passphrase failed:", e);
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throw new KeychainAccessException("TODO", e); //FIXME
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}
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}
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@Override
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public void deletePassphrase(String key) throws KeychainAccessException {
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try {
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if (walletIsOpen()
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&& wallet.hasEntry(handle, FOLDER_NAME, key, APP_NAME)
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&& wallet.entryType(handle, FOLDER_NAME, key, APP_NAME) == 1
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&& wallet.removeEntry(handle, FOLDER_NAME, key, APP_NAME) == 0) {
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LOG.debug("Passphrase successfully deleted.");
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} else {
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LOG.debug("Passphrase was not deleted.");
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}
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} catch (Exception e) {
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LOG.error("Deleting the passphrase failed:", e);
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throw new KeychainAccessException("TODO", e); //FIXME
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}
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}
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@Override
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public void changePassphrase(String key, CharSequence passphrase) throws KeychainAccessException {
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try {
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if (walletIsOpen()
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&& wallet.hasEntry(handle, FOLDER_NAME, key, APP_NAME)
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&& wallet.entryType(handle, FOLDER_NAME, key, APP_NAME) == 1
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&& wallet.writePassword(handle, FOLDER_NAME, key, passphrase.toString(), APP_NAME) == 0) {
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LOG.debug("Passphrase successfully changed.");
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} else {
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LOG.debug("Passphrase could not be changed.");
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}
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} catch (Exception e) {
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LOG.error("Changing the passphrase failed:", e);
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throw new KeychainAccessException("TODO", e); //FIXME
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}
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}
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private boolean walletIsOpen() throws KeychainAccessException {
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try {
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if (wallet.isOpen(Static.DEFAULT_WALLET)) {
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// This is needed due to KeechainManager loading the passphase directly
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if (handle == -1) handle = wallet.open(Static.DEFAULT_WALLET, 0, APP_NAME);
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return true;
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}
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wallet.openAsync(Static.DEFAULT_WALLET, 0, APP_NAME, false);
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wallet.getSignalHandler().await(KWallet.walletAsyncOpened.class, Static.ObjectPaths.KWALLETD5, () -> null);
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handle = wallet.getSignalHandler().getLastHandledSignal(KWallet.walletAsyncOpened.class, Static.ObjectPaths.KWALLETD5).handle;
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LOG.debug("Wallet successfully initialized.");
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return handle != -1;
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} catch (Exception e) {
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LOG.error("Asynchronous opening the wallet failed:", e);
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throw new KeychainAccessException("TODO", e); //FIXME
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}
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}
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}

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