commit b51ee93e87e80388fb43918175b9134e04fd5b5a
Author: vanitasvitae <vanitasvitae@fsfe.org>
Date:   Mon Jun 19 20:14:44 2017 +0200

    Initial commit

diff --git a/de.vanitasvitae.homemadeomemo/.gitignore b/de.vanitasvitae.homemadeomemo/.gitignore
new file mode 100644
index 0000000..1ad3004
--- /dev/null
+++ b/de.vanitasvitae.homemadeomemo/.gitignore
@@ -0,0 +1,21 @@
+# IntelliJ
+.idea
+*.iml
+*.ipr
+*.iws
+
+# Mac OS X
+.DS_Store
+
+.classpath
+.project
+.settings
+.gradle
+gradle.properties
+
+build/
+
+target/
+.metadata
+
+path/
diff --git a/de.vanitasvitae.homemadeomemo/build.gradle b/de.vanitasvitae.homemadeomemo/build.gradle
new file mode 100644
index 0000000..ececc53
--- /dev/null
+++ b/de.vanitasvitae.homemadeomemo/build.gradle
@@ -0,0 +1,33 @@
+apply plugin: 'java'
+apply plugin: 'idea'
+
+repositories {
+    mavenCentral()
+    maven {
+        url 'https://oss.sonatype.org/content/repositories/snapshots'
+    }
+}
+
+ext {
+    smackVersion="4.2.1-SNAPSHOT"
+}
+
+dependencies {
+    compile "org.igniterealtime.smack:smack-java7:$smackVersion"
+    compile "org.igniterealtime.smack:smack-omemo-signal:$smackVersion"
+    compile "org.igniterealtime.smack:smack-resolver-dnsjava:$smackVersion"
+    compile "org.igniterealtime.smack:smack-tcp:$smackVersion"
+}
+
+//Pack dependencies into the jar
+jar {
+    from(configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }) {
+        exclude "META-INF/*.SF"
+        exclude "META-INF/LICENSE"
+    }
+    manifest {
+        attributes(
+                'Main-Class': 'Messenger'
+        )
+    }
+}
diff --git a/de.vanitasvitae.homemadeomemo/gradle/wrapper/gradle-wrapper.jar b/de.vanitasvitae.homemadeomemo/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..a6290bb
Binary files /dev/null and b/de.vanitasvitae.homemadeomemo/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/de.vanitasvitae.homemadeomemo/gradle/wrapper/gradle-wrapper.properties b/de.vanitasvitae.homemadeomemo/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..221a6e7
--- /dev/null
+++ b/de.vanitasvitae.homemadeomemo/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Mon Jun 19 19:53:47 CEST 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-bin.zip
diff --git a/de.vanitasvitae.homemadeomemo/gradlew b/de.vanitasvitae.homemadeomemo/gradlew
new file mode 100755
index 0000000..4453cce
--- /dev/null
+++ b/de.vanitasvitae.homemadeomemo/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save ( ) {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/de.vanitasvitae.homemadeomemo/gradlew.bat b/de.vanitasvitae.homemadeomemo/gradlew.bat
new file mode 100644
index 0000000..e95643d
--- /dev/null
+++ b/de.vanitasvitae.homemadeomemo/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/de.vanitasvitae.homemadeomemo/settings.gradle b/de.vanitasvitae.homemadeomemo/settings.gradle
new file mode 100644
index 0000000..f8b7672
--- /dev/null
+++ b/de.vanitasvitae.homemadeomemo/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = 'de.vanitasvitae.homemadeomemo'
+
diff --git a/de.vanitasvitae.homemadeomemo/src/main/java/Messenger.java b/de.vanitasvitae.homemadeomemo/src/main/java/Messenger.java
new file mode 100644
index 0000000..c5bac5d
--- /dev/null
+++ b/de.vanitasvitae.homemadeomemo/src/main/java/Messenger.java
@@ -0,0 +1,153 @@
+import java.io.File;
+import java.util.HashMap;
+import java.util.Scanner;
+
+import org.jivesoftware.smack.AbstractXMPPConnection;
+import org.jivesoftware.smack.chat2.ChatManager;
+import org.jivesoftware.smack.packet.Message;
+import org.jivesoftware.smack.tcp.XMPPTCPConnection;
+import org.jivesoftware.smackx.omemo.OmemoConfiguration;
+import org.jivesoftware.smackx.omemo.OmemoFingerprint;
+import org.jivesoftware.smackx.omemo.OmemoManager;
+import org.jivesoftware.smackx.omemo.OmemoService;
+import org.jivesoftware.smackx.omemo.exceptions.CannotEstablishOmemoSessionException;
+import org.jivesoftware.smackx.omemo.exceptions.UndecidedOmemoIdentityException;
+import org.jivesoftware.smackx.omemo.internal.CipherAndAuthTag;
+import org.jivesoftware.smackx.omemo.internal.OmemoDevice;
+import org.jivesoftware.smackx.omemo.internal.OmemoMessageInformation;
+import org.jivesoftware.smackx.omemo.listener.OmemoMessageListener;
+import org.jivesoftware.smackx.omemo.signal.SignalOmemoService;
+import org.jivesoftware.smackx.omemo.util.OmemoKeyUtil;
+import org.jxmpp.jid.BareJid;
+import org.jxmpp.jid.EntityBareJid;
+import org.jxmpp.jid.impl.JidCreate;
+import org.whispersystems.libsignal.IdentityKey;
+
+public class Messenger {
+
+    private AbstractXMPPConnection connection;
+    private OmemoManager omemoManager;
+    private static Scanner scanner;
+
+    public static void main(String[] args) throws Exception {
+        String username = args[0];
+        String password = args[1];
+        Messenger messenger = new Messenger(username, password);
+
+        scanner = new Scanner(System.in);
+        while(true) {
+            String input = scanner.nextLine();
+
+            if (input.startsWith("/quit")) {
+                break;
+            }
+            if (input.isEmpty()) {
+                continue;
+            }
+            messenger.handleInput(input);
+        }
+    }
+
+    public Messenger(String username, String password) throws Exception {
+        connection = new XMPPTCPConnection(username, password);
+        connection = connection.connect();
+        connection.login();
+
+        SignalOmemoService.acknowledgeLicense();
+        SignalOmemoService.setup();
+        OmemoConfiguration.setFileBasedOmemoStoreDefaultPath(new File("path"));
+        omemoManager = OmemoManager.getInstanceFor(connection);
+        omemoManager.addOmemoMessageListener(new OmemoMessageListener() {
+            @Override
+            public void onOmemoMessageReceived(String decryptedBody, Message encryptedMessage,
+                                               Message wrappingMessage, OmemoMessageInformation omemoInformation) {
+                IdentityKey senderKey = (IdentityKey) omemoInformation.getSenderIdentityKey().getIdentityKey();
+                OmemoService<?,IdentityKey,?,?,?,?,?,?,?> service =
+                        (OmemoService<?,IdentityKey,?,?,?,?,?,?,?>) OmemoService.getInstance();
+                OmemoFingerprint fingerprint = service.getOmemoStoreBackend().keyUtil().getFingerprint(senderKey);
+                boolean trusted = omemoManager.isTrustedOmemoIdentity(omemoInformation.getSenderDevice(),
+                        fingerprint);
+                System.out.println("(O) " + trusted + " " + encryptedMessage.getFrom() + ": " + decryptedBody);
+            }
+
+            @Override
+            public void onOmemoKeyTransportReceived(CipherAndAuthTag cipherAndAuthTag, Message message, Message wrappingMessage, OmemoMessageInformation omemoInformation) {
+            }
+        });
+
+        ChatManager.getInstanceFor(connection).addIncomingListener(
+                (from, message, chat) -> System.out.println(from.asBareJid() + ": " + message)
+        );
+        omemoManager.initialize();
+        System.out.println("Ready to chat");
+    }
+
+    private void handleInput(String input) throws Exception {
+        String[] split = input.split(" ");
+        String command = split[0];
+
+        switch (command) {
+            case "/say":
+                if (split.length > 2) {
+                    String recipient = split[1];
+                    EntityBareJid recipientJid = JidCreate.entityBareFrom(recipient);
+
+                    StringBuilder message = new StringBuilder(split[2]);
+                    for (int i=3; i<split.length; i++) message.append(" ").append(split[i]);
+
+                    ChatManager.getInstanceFor(connection).chatWith(recipientJid).send(message);
+                }
+                break;
+
+            case "/omemo":
+                if (split.length > 2) {
+                    String recipient = split[1];
+                    EntityBareJid recipientJid = JidCreate.entityBareFrom(recipient);
+
+                    StringBuilder message = new StringBuilder();
+                    for (int i=2; i<split.length; i++) message.append(split[i]);
+
+                    Message encrypted = null;
+                    try {
+                        encrypted = OmemoManager.getInstanceFor(connection).encrypt(recipientJid, message.toString());
+                        ChatManager.getInstanceFor(connection).chatWith(recipientJid).send(encrypted);
+                    }
+                    // Untrusted devices
+                    catch (UndecidedOmemoIdentityException e) {
+                        System.out.println("Untrusted Identities: ");
+                        for (OmemoDevice device : e.getUntrustedDevices()) {
+                            System.out.println(device);
+                        }
+                    }
+                    catch (CannotEstablishOmemoSessionException e) {
+                        encrypted = omemoManager.encryptForExistingSessions(e, message.toString());
+                    }
+
+                    if (encrypted != null) {
+                        ChatManager.getInstanceFor(connection).chatWith(recipientJid).send(encrypted);
+                    }
+                }
+                break;
+
+            case "/trust":
+                if (split.length == 2) {
+                    BareJid contact = JidCreate.bareFrom(split[1]);
+                    HashMap<OmemoDevice, OmemoFingerprint> fingerprints =
+                            omemoManager.getActiveFingerprints(contact);
+
+                    //Let user decide
+                    for (OmemoDevice d : fingerprints.keySet()) {
+                        System.out.println("Trust (1), or distrust (2)?");
+                        System.out.println(OmemoKeyUtil.prettyFingerprint(fingerprints.get(d)));
+                        int decision = Integer.parseInt(scanner.nextLine());
+                        if (decision == 1) {
+                            omemoManager.trustOmemoIdentity(d, fingerprints.get(d));
+                        } else {
+                            omemoManager.distrustOmemoIdentity(d, fingerprints.get(d));
+                        }
+                    }
+                }
+                break;
+        }
+    }
+}