Move libtextsecure into independent repository.

.gitignore

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+.gradle
+.idea
+*.iml
+local.properties
+build/

README.md

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+# libtextsecure-java
+
+A Java library for communicating via TextSecure.
+
+## Implementing the Axolotl interfaces
+
+The axolotl encryption protocol is a stateful protocol, so libtextsecure users
+need to implement the storage interface `AxolotlStore`, which handles load/store
+of your key and session information to durable media.
+
+## Creating keys
+
+`````
+IdentityKeyPair    identityKey        = KeyHelper.generateIdentityKeyPair();
+List<PreKeyRecord> oneTimePreKeys     = KeyHelper.generatePreKeys(100);
+PreKeyRecord       lastResortKey      = KeyHelper.generateLastResortKey();
+SignedPreKeyRecord signedPreKeyRecord = KeyHelper.generateSignedPreKey(identityKey, signedPreKeyId);
+`````
+
+The above are then stored locally so that they're available for load via the `AxolotlStore`.
+
+## Registering
+
+At install time, clients need to register with the TextSecure server.
+
+`````
+private final String     URL         = "https://my.textsecure.server.com";
+private final TrustStore TRUST_STORE = new MyTrustStoreImpl();
+private final String     USERNAME    = "+14151231234";
+private final String     PASSWORD    = generateRandomPassword();
+
+TextSecureAccountManager accountManager = new TextSecureAccountManager(URL, TRUST_STORE,
+                                                                       USERNAME, PASSWORD);
+
+accountManager.requestSmsVerificationCode();
+accountManager.verifyAccount(receivedSmsVerificationCode, generateRandomSignalingKey(),
+                             false, generateRandomInstallId());
+accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
+accountManager.setPreKeys(identityKey.getPublic(), lastResortKey, signedPreKey, oneTimePreKeys);
+`````
+
+## Sending text messages
+
+`````
+TextSecureMessageSender messageSender = new TextSecureMessageSender(URL, TRUST_STORE, USERNAME, PASSWORD,
+                                                                    localRecipientId, new MyAxolotlStore(),
+                                                                    Optional.absent());
+
+long              recipientId = getRecipientIdFor("+14159998888");
+TextSecureAddress destination = new TextSecureAddress(recipientId, "+14159998888", null);
+TextSecureMessage message     = new TextSecureMessage(System.currentTimeMillis(), "Hello, world!");
+
+messageSender.sendMessage(destination, message);
+`````
+
+## Sending media messages
+
+`````
+TextSecureMessageSender messageSender = new TextSecureMessageSender(URL, TRUST_STORE, USERNAME, PASSWORD,
+                                                                    localRecipientId, new MyAxolotlStore(),
+                                                                    Optional.absent());
+
+long              recipientId = getRecipientIdFor("+14159998888");
+TextSecureAddress destination = new TextSecureAddress(recipientId, "+14159998888", null);
+
+File                 myAttachment     = new File("/path/to/my.attachment");
+FileInputStream      attachmentStream = new FileInputStream(myAttachment);
+TextSecureAttachment attachment       = new TextSecureAttachmentStream(attachmentStream, "image/png", myAttachment.size());
+TextSecureMessage    message          = new TextSecureMessage(System.currentTimeMillis(), attachment, "Hello, world!");
+
+messageSender.sendMessage(destination, message);
+
+`````
+
+## Receiving messages
+
+`````
+TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, USERNAME, PASSWORD, mySignalingKey);
+TextSecureMessagePipe     messagePipe;
+
+try {
+  messagePipe = messageReciever.createMessagePipe();
+
+  while (listeningForMessages) {
+    TextSecureEnvelope envelope = messagePipe.read(timeout, timeoutTimeUnit);
+    TextSecureCipher   cipher   = new TextSecureCipher(new MyAxolotlStore(),
+                                                       getRecipientIdFor(envelope.getSource()),
+                                                       envelope.getSourceDevice());
+    TextSecureMessage message   = cipher.decrypt(envelope);
+
+    System.out.println("Received message: " + message.getBody().get());
+  }
+
+} finally {
+  if (messagePipe != null)
+    messagePipe.close();
+}
+`````

build.gradle

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+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:1.0.0'
+    }
+}
+
+apply plugin: 'com.android.library'
+apply plugin: 'maven'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    compile 'com.google.protobuf:protobuf-java:2.5.0'
+    compile 'com.googlecode.libphonenumber:libphonenumber:6.1'
+    compile 'com.fasterxml.jackson.core:jackson-databind:2.5.0'
+
+    compile 'org.whispersystems:axolotl-android:1.0.0'
+    compile 'com.squareup.okhttp:okhttp:2.2.0'
+}
+
+android {
+    compileSdkVersion 21
+    buildToolsVersion '21.1.2'
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_7
+        targetCompatibility JavaVersion.VERSION_1_7
+    }
+}
+
+tasks.whenTaskAdded { task ->
+    if (task.name.equals("lint")) {
+        task.enabled = false
+    }
+}
+
+version '0.1'
+group 'org.whispersystems.textsecure'
+archivesBaseName = 'libtextsecure'
+
+uploadArchives {
+    repositories {
+        mavenDeployer {
+            repository(url: mavenLocal().getUrl())
+        }
+    }
+}

gradle/wrapper/gradle-wrapper.properties

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+#Fri Feb 27 17:12:50 PST 2015
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.2-bin.zip

gradlew

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+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched.
+if $cygwin ; then
+    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+fi
+
+# 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\"`/" >&-
+APP_HOME="`pwd -P`"
+cd "$SAVED" >&-
+
+CLASSPATH=$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" ] ; 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"`
+
+    # 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
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"