feat: add kotlin bindings

Merge pull request #1239 from matrix-org/ganfra/kotlin_bindings

bindings/kotlin/README.md

@@ -0,0 +1,24 @@
+# Matrix rust components kotlin
+
+This project and build scripts demonstrate how to create an aar and how to import it in your android projects.
+
+## Prerequisites
+
+* the Rust toolchain
+* UniFFI - `cargo install uniffi_bindgen`
+* cargo-ndk < 2.12.0 `cargo install cargo-ndk --version 2.11.0`
+* android targets (e.g. `rustup target add \
+  aarch64-linux-android \
+  armv7-linux-androideabi \
+  x86_64-linux-android \
+  i686-linux-android`)
+
+## Building the SDK
+
+To build the full sdk and get an aar you can call :
+`./bindings/kotlin/scripts/build_sdk.sh /matrix-rust_sdk/bindings/kotlin/sample/libs`
+where the parameter is the path for the aar to go
+
+## License
+
+[Apache-2.0](https://www.apache.org/licenses/LICENSE-2.0)

bindings/kotlin/SECURITY.md

@@ -0,0 +1,5 @@
+# Reporting a Vulnerability
+
+**If you've found a security vulnerability, please report it to security@matrix.org**
+
+For more information on our security disclosure policy, visit https://www.matrix.org/security-disclosure-policy/

bindings/kotlin/build.gradle

@@ -0,0 +1,23 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+apply plugin: 'io.github.gradle-nexus.publish-plugin'
+apply from: "${rootDir}/scripts/publish-root.gradle"
+
+buildscript {
+    repositories {
+        maven { url "https://plugins.gradle.org/m2/" }
+        google()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath BuildPlugins.android
+        classpath BuildPlugins.kotlin
+        classpath BuildPlugins.nexusPublish
+    }
+}
+
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

bindings/kotlin/buildSrc/build.gradle.kts

@@ -0,0 +1,9 @@
+import org.gradle.kotlin.dsl.`kotlin-dsl`
+
+plugins {
+    `kotlin-dsl`
+}
+
+repositories {
+    mavenCentral()
+}

bindings/kotlin/buildSrc/src/main/java/ConfigurationData.kt

@@ -0,0 +1,11 @@
+object ConfigurationData {
+    const val compileSdk = 31
+    const val targetSdk = 31
+    const val minSdk = 21
+    const val majorVersion = 0
+    const val minorVersion = 2
+    const val patchVersion = 0
+    const val versionName = "$majorVersion.$minorVersion.$patchVersion"
+    const val snapshotVersionName = "$majorVersion.$minorVersion.${patchVersion + 1}-SNAPSHOT"
+    const val publishGroupId = "org.matrix.rustcomponents"
+}

bindings/kotlin/buildSrc/src/main/java/Dependencies.kt

@@ -0,0 +1,22 @@
+internal object Versions {
+    const val androidGradlePlugin = "7.1.2"
+    const val kotlin = "1.6.10"
+    const val jUnit = "4.12"
+    const val nexusPublishGradlePlugin = "1.1.0"
+    const val jna = "5.10.0"
+}
+
+internal object BuildPlugins {
+    const val android = "com.android.tools.build:gradle:${Versions.androidGradlePlugin}"
+    const val kotlin = "org.jetbrains.kotlin:kotlin-gradle-plugin:${Versions.kotlin}"
+    const val nexusPublish = "io.github.gradle-nexus:publish-plugin:${Versions.nexusPublishGradlePlugin}"
+}
+
+/**
+ * To define dependencies
+ */
+internal object Dependencies {
+    const val kotlin = "org.jetbrains.kotlin:kotlin-stdlib-jdk7:${Versions.kotlin}"
+    const val junit = "junit:junit:${Versions.jUnit}"
+    const val jna = "net.java.dev.jna:jna:${Versions.jna}@aar"
+}

bindings/kotlin/crypto/crypto-android/.gitignore

@@ -0,0 +1 @@
+/build

bindings/kotlin/crypto/crypto-android/build.gradle

@@ -0,0 +1,51 @@
+plugins {
+    id 'com.android.library'
+    id 'org.jetbrains.kotlin.android'
+}
+
+ext {
+    PUBLISH_GROUP_ID = ConfigurationData.publishGroupId
+    PUBLISH_ARTIFACT_ID = 'crypto-android'
+    PUBLISH_VERSION = rootVersionName
+    PUBLISH_DESCRIPTION = 'Android Bindings to the Matrix Rust Crypto SDK'
+}
+
+apply from: "${rootDir}/scripts/publish-module.gradle"
+
+android {
+
+    compileSdk ConfigurationData.compileSdk
+
+    defaultConfig {
+        minSdk ConfigurationData.minSdk
+        targetSdk ConfigurationData.targetSdk
+        versionName ConfigurationData.versionName
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles "consumer-rules.pro"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+}
+
+android.libraryVariants.all { variant ->
+    def sourceSet = variant.sourceSets.find { it.name == variant.name }
+    sourceSet.java.srcDir new File(buildDir, "generated/source/${variant.name}")
+}
+
+dependencies {
+    implementation Dependencies.jna
+    testImplementation Dependencies.junit
+}

bindings/kotlin/crypto/crypto-android/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

bindings/kotlin/crypto/crypto-android/src/main/AndroidManifest.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest package="org.matrix.rustcomponents.sdk.crypto">
+
+</manifest>

bindings/kotlin/crypto/crypto-jvm/.gitignore

@@ -0,0 +1 @@
+/build

bindings/kotlin/crypto/crypto-jvm/build.gradle

@@ -0,0 +1,13 @@
+plugins {
+    id 'java-library'
+    id 'org.jetbrains.kotlin.jvm'
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_7
+    targetCompatibility = JavaVersion.VERSION_1_7
+}
+
+dependencies {
+    implementation 'net.java.dev.jna:jna:5.10.0@aar'
+}

bindings/kotlin/gradle.properties

@@ -0,0 +1,25 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Automatically convert third-party libraries to use AndroidX
+android.enableJetifier=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true

bindings/kotlin/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Mon Feb 28 18:48:31 CET 2022
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME

bindings/kotlin/gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# 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
+#
+#      https://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.
+#
+
+##############################################################################
+##
+##  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 "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+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 or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; 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=`expr $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"
+
+exec "$JAVACMD" "$@"

bindings/kotlin/gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@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 Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@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="-Xmx64m" "-Xms64m"
+
+@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 execute
+
+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 execute
+
+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
+
+: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 %*
+
+: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

bindings/kotlin/scripts/build_crypto.sh

@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+set -eEu
+
+cd "$(dirname "$0")"
+CURRENT_DIR=$(pwd)
+
+# FOR DEBUG
+#RELEASE_FLAG=""
+#RELEASE_TYPE_DIR="debug"
+#RELEASE_AAR_NAME="crypto-android-debug"
+
+# FOR RELEASE
+RELEASE_FLAG="--release"
+RELEASE_TYPE_DIR="release"
+RELEASE_AAR_NAME="crypto-android-release"
+
+SRC_ROOT=../../..
+# Path to the kotlin root project
+KOTLIN_ROOT=..
+
+BASE_TARGET_DIR="${SRC_ROOT}/target"
+SDK_ROOT="${KOTLIN_ROOT}/crypto/crypto-android"
+SDK_TARGET_DIR="${SDK_ROOT}/src/main/jniLibs"
+BUILD_DIR="${SDK_ROOT}/build"
+GENERATED_DIR="${BUILD_DIR}/generated/source/${RELEASE_TYPE_DIR}"
+mkdir -p ${GENERATED_DIR}
+
+TARGET_CRATE=matrix-sdk-crypto-ffi
+
+AAR_DESTINATION=$1
+
+# Build libs for all the different architectures
+
+echo -e "Building for x86_64-linux-android[1/4]"
+cargo ndk --target x86_64-linux-android -o ${SDK_TARGET_DIR}/ build "${RELEASE_FLAG}" -p ${TARGET_CRATE}
+
+echo -e "Building for aarch64-linux-android[2/4]"
+cargo ndk --target aarch64-linux-android -o ${SDK_TARGET_DIR}/ build "${RELEASE_FLAG}" -p ${TARGET_CRATE}
+
+echo -e "Building for armv7-linux-androideabi[3/4]"
+cargo ndk --target armv7-linux-androideabi -o ${SDK_TARGET_DIR}/ build "${RELEASE_FLAG}" -p ${TARGET_CRATE}
+
+echo -e "Building for i686-linux-android[4/4]"
+cargo ndk --target i686-linux-android -o ${SDK_TARGET_DIR}/ build "${RELEASE_FLAG}" -p ${TARGET_CRATE}
+
+# Generate uniffi files
+echo -e "Generate uniffi kotlin file"
+uniffi-bindgen generate "${SRC_ROOT}/bindings/${TARGET_CRATE}/src/olm.udl" \
+  --language kotlin \
+  --config "${SRC_ROOT}/bindings/${TARGET_CRATE}/uniffi.toml" \
+  --out-dir ${GENERATED_DIR} \
+  --lib-file "${BASE_TARGET_DIR}/x86_64-linux-android/${RELEASE_TYPE_DIR}/libmatrix_sdk_crypto_ffi.a"
+  
+# Create android library
+cd "${KOTLIN_ROOT}"
+./gradlew :crypto:crypto-android:assemble
+cd "${CURRENT_DIR}"
+
+echo -e "Moving the generated aar file to ${AAR_DESTINATION}/matrix-rust-sdk-crypto.aar"
+mv "${BUILD_DIR}/outputs/aar/${RELEASE_AAR_NAME}.aar" "${AAR_DESTINATION}/matrix-rust-sdk-crypto.aar"
+
+# Clean-up
+echo -e "Cleaning up temporary files"
+
+rm -r "${BUILD_DIR}"
+rm -r "${SDK_TARGET_DIR}"
+

bindings/kotlin/scripts/build_sdk.sh

@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+set -eEu
+
+cd "$(dirname "$0")"
+CURRENT_DIR=$(pwd)
+
+# FOR DEBUG
+#RELEASE_FLAG=""
+#RELEASE_TYPE_DIR="debug"
+#RELEASE_AAR_NAME="sdk-android-debug"
+
+# FOR RELEASE
+RELEASE_FLAG="--release"
+RELEASE_TYPE_DIR="release"
+RELEASE_AAR_NAME="sdk-android-release"
+
+SRC_ROOT=../../..
+# Path to the kotlin root project
+KOTLIN_ROOT=..
+
+BASE_TARGET_DIR="${SRC_ROOT}/target"
+SDK_ROOT="${KOTLIN_ROOT}/sdk/sdk-android"
+SDK_TARGET_DIR="${SDK_ROOT}/src/main/jniLibs"
+BUILD_DIR="${SDK_ROOT}/build"
+GENERATED_DIR="${BUILD_DIR}/generated/source/${RELEASE_TYPE_DIR}"
+mkdir -p ${GENERATED_DIR}
+
+AAR_DESTINATION=$1
+
+# Build libs for all the different architectures
+
+echo -e "Building for x86_64-linux-android[1/4]"
+cargo ndk --target x86_64-linux-android -o ${SDK_TARGET_DIR}/ build "${RELEASE_FLAG}" -p matrix-sdk-ffi
+
+echo -e "Building for aarch64-linux-android[2/4]"
+cargo ndk --target aarch64-linux-android -o ${SDK_TARGET_DIR}/ build "${RELEASE_FLAG}" -p matrix-sdk-ffi
+
+echo -e "Building for armv7-linux-androideabi[3/4]"
+cargo ndk --target armv7-linux-androideabi -o ${SDK_TARGET_DIR}/ build "${RELEASE_FLAG}" -p matrix-sdk-ffi
+
+echo -e "Building for i686-linux-android[4/4]"
+cargo ndk --target i686-linux-android -o ${SDK_TARGET_DIR}/ build "${RELEASE_FLAG}" -p matrix-sdk-ffi
+
+# Generate uniffi files
+echo -e "Generate uniffi kotlin file"
+uniffi-bindgen generate "${SRC_ROOT}/bindings/matrix-sdk-ffi/src/api.udl" \
+  --language kotlin \
+  --out-dir ${GENERATED_DIR} \
+  --lib-file "${BASE_TARGET_DIR}/x86_64-linux-android/${RELEASE_TYPE_DIR}/libmatrix_sdk_ffi.a"
+  
+# Create android library
+cd "${KOTLIN_ROOT}"
+./gradlew :sdk:sdk-android:assemble
+cd "${CURRENT_DIR}"
+
+echo -e "Moving the generated aar file to ${AAR_DESTINATION}/matrix-rust-sdk.aar"
+mv "${BUILD_DIR}/outputs/aar/${RELEASE_AAR_NAME}.aar" "${AAR_DESTINATION}/matrix-rust-sdk.aar"
+
+# Clean-up
+echo -e "Cleaning up temporary files"
+
+rm -r "${BUILD_DIR}"
+rm -r "${SDK_TARGET_DIR}"
+

bindings/kotlin/scripts/publish-module.gradle

@@ -0,0 +1,77 @@
+apply plugin: 'maven-publish'
+apply plugin: 'signing'
+
+task androidSourcesJar(type: Jar) {
+    archiveClassifier.set('sources')
+    if (project.plugins.findPlugin("com.android.library")) {
+        // For Android libraries
+        from android.sourceSets.main.java.srcDirs
+        from android.sourceSets.main.kotlin.srcDirs
+    } else {
+        // For pure Kotlin libraries, in case you have them
+        from sourceSets.main.java.srcDirs
+        from sourceSets.main.kotlin.srcDirs
+    }
+}
+
+artifacts {
+    archives androidSourcesJar
+}
+
+group = PUBLISH_GROUP_ID
+version = rootVersionName
+
+afterEvaluate {
+    publishing {
+        publications {
+            release(MavenPublication) {
+
+                groupId PUBLISH_GROUP_ID
+                artifactId PUBLISH_ARTIFACT_ID
+                version PUBLISH_VERSION
+
+                if (project.plugins.findPlugin("com.android.library")) {
+                    from components.release
+                } else {
+                    from components.java
+                }
+
+                artifact androidSourcesJar
+
+                pom {
+                    name = PUBLISH_ARTIFACT_ID
+                    description = PUBLISH_DESCRIPTION
+                    url = 'https://github.com/matrix-org/matrix-rust-components-kotlin'
+                    licenses {
+                        license {
+                            name = 'The Apache Software License, Version 2.0'
+                            url = 'https://www.apache.org/licenses/LICENSE-2.0.txt'
+                        }
+                    }
+                    developers {
+                        developer {
+                            id = 'matrixdev'
+                            name = 'matrixdev'
+                            email = 'android@element.io'
+                        }
+                    }
+
+                    scm {
+                        connection = 'scm:git:git://github.com/matrix-org/matrix-rust-components-kotlin.git'
+                        developerConnection = 'scm:git:ssh://git@github.com/matrix-org/matrix-rust-components-kotlin.git'
+                        url = 'https://github.com/matrix-org/matrix-rust-components-kotlin'
+                    }
+                }
+            }
+        }
+    }
+}
+
+signing {
+    useInMemoryPgpKeys(
+            rootProject.ext["signing.keyId"],
+            rootProject.ext["signing.key"],
+            rootProject.ext["signing.password"],
+    )
+    sign publishing.publications
+}

bindings/kotlin/scripts/publish-root.gradle

@@ -0,0 +1,43 @@
+ext["signing.keyId"] = ''
+ext["signing.password"] = ''
+ext["signing.key"] = ''
+ext["ossrhUsername"] = ''
+ext["ossrhPassword"] = ''
+ext["sonatypeStagingProfileId"] = ''
+ext["snapshot"] = ''
+
+File secretPropsFile = project.rootProject.file('local.properties')
+if (secretPropsFile.exists()) {
+    // Read local.properties file first if it exists
+    Properties p = new Properties()
+    new FileInputStream(secretPropsFile).withCloseable { is -> p.load(is) }
+    p.each { name, value -> ext[name] = value }
+} else {
+    // Use system environment variables
+    ext["ossrhUsername"] = System.getenv('OSSRH_USERNAME')
+    ext["ossrhPassword"] = System.getenv('OSSRH_PASSWORD')
+    ext["sonatypeStagingProfileId"] = System.getenv('SONATYPE_STAGING_PROFILE_ID')
+    ext["signing.keyId"] = System.getenv('SIGNING_KEY_ID')
+    ext["signing.password"] = System.getenv('SIGNING_PASSWORD')
+    ext["signing.key"] = System.getenv('SIGNING_KEY')
+    ext["snapshot"] = System.getenv('SNAPSHOT')
+}
+
+if (snapshot.toBoolean()) {
+    ext["rootVersionName"] = ConfigurationData.snapshotVersionName
+} else {
+    ext["rootVersionName"] = ConfigurationData.versionName
+}
+
+nexusPublishing {
+    repositories {
+        sonatype {
+            stagingProfileId = sonatypeStagingProfileId
+            username = ossrhUsername
+            password = ossrhPassword
+            version = rootVersionName
+            nexusUrl.set(uri("https://s01.oss.sonatype.org/service/local/"))
+            snapshotRepositoryUrl.set(uri("https://s01.oss.sonatype.org/content/repositories/snapshots/"))
+        }
+    }
+}

bindings/kotlin/sdk/sdk-android/.gitignore

@@ -0,0 +1 @@
+/build

bindings/kotlin/sdk/sdk-android/build.gradle

@@ -0,0 +1,51 @@
+plugins {
+    id 'com.android.library'
+    id 'org.jetbrains.kotlin.android'
+}
+
+ext {
+    PUBLISH_GROUP_ID = ConfigurationData.publishGroupId
+    PUBLISH_ARTIFACT_ID = 'sdk-android'
+    PUBLISH_VERSION = rootVersionName
+    PUBLISH_DESCRIPTION = 'Android Bindings to the Matrix Rust SDK'
+}
+
+apply from: "${rootDir}/scripts/publish-module.gradle"
+
+android {
+
+    compileSdk ConfigurationData.compileSdk
+
+    defaultConfig {
+        minSdk ConfigurationData.minSdk
+        targetSdk ConfigurationData.targetSdk
+        versionName ConfigurationData.versionName
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles "consumer-rules.pro"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+}
+
+android.libraryVariants.all { variant ->
+    def sourceSet = variant.sourceSets.find { it.name == variant.name }
+    sourceSet.java.srcDir new File(buildDir, "generated/source/${variant.name}")
+}
+
+dependencies {
+    implementation Dependencies.jna
+    testImplementation Dependencies.junit
+}

bindings/kotlin/sdk/sdk-android/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

bindings/kotlin/sdk/sdk-android/src/main/AndroidManifest.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest package="org.matrix.rustcomponents.sdk.android" />

bindings/kotlin/sdk/sdk-jvm/.gitignore

@@ -0,0 +1 @@
+/build

bindings/kotlin/sdk/sdk-jvm/build.gradle

@@ -0,0 +1,13 @@
+plugins {
+    id 'java-library'
+    id 'org.jetbrains.kotlin.jvm'
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_7
+    targetCompatibility = JavaVersion.VERSION_1_7
+}
+
+dependencies {
+    implementation 'net.java.dev.jna:jna:5.10.0@aar'
+}

bindings/kotlin/settings.gradle

@@ -0,0 +1,27 @@
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        google()
+        mavenCentral()
+    }
+    plugins {
+        id 'com.android.application' version '7.1.0-beta01'
+        id 'com.android.library' version '7.1.0-beta01'
+        id 'org.jetbrains.kotlin.android' version '1.5.30'
+        id 'org.jetbrains.kotlin.jvm' version '1.5.30'
+    }
+}
+dependencyResolutionManagement {
+    repositories {
+        google()
+        mavenCentral()
+        flatDir {
+            dirs 'libs'
+        }
+    }
+}
+rootProject.name = "MatrixKotlinRustSDK"
+include ':crypto:crypto-android'
+include ':crypto:crypto-jvm'
+include ':sdk:sdk-jvm'
+include ':sdk:sdk-android'

bindings/matrix-sdk-crypto-ffi/uniffi.toml

@@ -1,5 +1,6 @@
 [bindings.kotlin]
-package_name = "org.matrix.sdk.crypto"
+package_name = "org.matrix.rustcomponents.sdk.crypto"
+cdylib_name = "matrix_sdk_crypto_ffi"
 
 [bindings.swift]
 module_name = "MatrixSDKCrypto"

bindings/matrix-sdk-ffi/uniffi.toml

@@ -0,0 +1,3 @@
+[bindings.kotlin]
+package_name = "org.matrix.rustcomponents.sdk"
+cdylib_name = "matrix_sdk_ffi"