commit 8e3690a2b8f96ed30d6e2f007005b69868184d46 Author: Jacob Nguyen <76754747+jacoobes@users.noreply.github.com> Date: Wed Aug 17 21:16:22 2022 -0500 feat: first commit, got event listeners to work diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..d938789 --- /dev/null +++ b/.gitignore @@ -0,0 +1,45 @@ +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### IntelliJ IDEA ### +.idea/modules.xml +.idea/jarRepositories.xml +.idea/compiler.xml +.idea/libraries/ +*.iws +*.iml +*.ipr +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ + +### Eclipse ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache +bin/ +!**/src/main/**/bin/ +!**/src/test/**/bin/ + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ + +### VS Code ### +.vscode/ + +### Mac OS ### +.DS_Store + +/src/main/resources/ +/.env diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 0000000..13566b8 --- /dev/null +++ b/.idea/.gitignore @@ -0,0 +1,8 @@ +# Default ignored files +/shelf/ +/workspace.xml +# Editor-based HTTP Client requests +/httpRequests/ +# Datasource local storage ignored files +/dataSources/ +/dataSources.local.xml diff --git a/.idea/discord.xml b/.idea/discord.xml new file mode 100644 index 0000000..8cf359d --- /dev/null +++ b/.idea/discord.xml @@ -0,0 +1,7 @@ + + + + + \ No newline at end of file diff --git a/.idea/gradle.xml b/.idea/gradle.xml new file mode 100644 index 0000000..67033f8 --- /dev/null +++ b/.idea/gradle.xml @@ -0,0 +1,18 @@ + + + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000..1ebc6b1 --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,13 @@ + + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/vcs.xml b/.idea/vcs.xml new file mode 100644 index 0000000..94a25f7 --- /dev/null +++ b/.idea/vcs.xml @@ -0,0 +1,6 @@ + + + + + + \ No newline at end of file diff --git a/build.gradle.kts b/build.gradle.kts new file mode 100644 index 0000000..41f0fb8 --- /dev/null +++ b/build.gradle.kts @@ -0,0 +1,45 @@ +import org.jetbrains.kotlin.gradle.tasks.KotlinCompile +val jwt_version : String by project +val coroutine_version : String by project +val gh_version : String by project +val arrow_fx_version : String by project +val fuel_version : String by project +plugins { + kotlin("jvm") version "1.7.10" + application + kotlin("plugin.serialization") version "1.7.10" +} + +group = "org.example" +version = "1.0-SNAPSHOT" + +repositories { + mavenCentral() +} + +dependencies { + implementation(platform("io.arrow-kt:arrow-stack:$arrow_fx_version")) + testImplementation(kotlin("test")) + implementation("io.ktor:ktor-client-core:2.1.0") + implementation("io.ktor:ktor-client-cio:2.1.0") + implementation("io.ktor:ktor-server-core-jvm:2.0.3") + implementation("io.ktor:ktor-server-netty-jvm:2.0.3") + implementation("com.auth0:java-jwt:$jwt_version") + implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutine_version") + implementation("io.github.cdimascio:dotenv-kotlin:6.3.1") + implementation("org.kohsuke:github-api:$gh_version") + implementation("io.arrow-kt:arrow-fx-coroutines") + implementation("io.arrow-kt:arrow-core") +} + +tasks.test { + useJUnitPlatform() +} + +tasks.withType { + kotlinOptions.jvmTarget = "1.8" +} + +application { + mainClass.set("MainKt") +} \ No newline at end of file diff --git a/gradle.properties b/gradle.properties new file mode 100644 index 0000000..6f90f8d --- /dev/null +++ b/gradle.properties @@ -0,0 +1,6 @@ +kotlin.code.style=official +jwt_version=4.0.0 +coroutine_version= 1.6.4 +gh_version=1.307 +arrow_fx_version=1.0.1 +fuel_version=4.6.4 \ No newline at end of file diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..7454180 Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..60c76b3 --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists \ No newline at end of file diff --git a/gradlew b/gradlew new file mode 100644 index 0000000..1b6c787 --- /dev/null +++ b/gradlew @@ -0,0 +1,234 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original 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 POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | 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" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..107acd3 --- /dev/null +++ b/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 diff --git a/settings.gradle.kts b/settings.gradle.kts new file mode 100644 index 0000000..ca0dc38 --- /dev/null +++ b/settings.gradle.kts @@ -0,0 +1,3 @@ + +rootProject.name = "sern-automata" + diff --git a/src/main/kotlin/Client.kt b/src/main/kotlin/Client.kt new file mode 100644 index 0000000..ccb3ae8 --- /dev/null +++ b/src/main/kotlin/Client.kt @@ -0,0 +1,125 @@ +import arrow.core.Either +import arrow.fx.coroutines.release +import arrow.fx.coroutines.resource +import com.auth0.jwt.JWT +import com.auth0.jwt.algorithms.Algorithm +import com.auth0.jwt.exceptions.JWTCreationException +import io.github.cdimascio.dotenv.dotenv +import io.ktor.server.engine.* +import io.ktor.server.netty.* +import kotlinx.coroutines.* +import kotlinx.coroutines.channels.Channel +import kotlinx.coroutines.channels.Channel.Factory.UNLIMITED +import kotlinx.coroutines.flow.collect +import org.kohsuke.github.* +import org.kohsuke.github.connector.GitHubConnector +import java.security.KeyFactory +import java.security.interfaces.RSAPrivateKey +import java.security.spec.PKCS8EncodedKeySpec +import java.time.Instant +import java.util.* +import kotlin.coroutines.CoroutineContext + +object Client : CoroutineScope { + private const val orgName = "sern-handler" + private const val baseLink = "https://api.github.com" + private var jwtToken: String + private var gitHubApp: GHApp + private var gitHub: GitHub + private var parentJob = Job() + val eventEmitter = EventEmitter() + + override val coroutineContext: CoroutineContext + get() = Dispatchers.Default + parentJob + private val server = embeddedServer( + Netty, + port = 8000, + host = "localhost", + parentCoroutineContext = coroutineContext + ) { + configureRouting() + } + init { + runBlocking { + dotenv { + systemProperties = true + } + val privateKey = processKey().use { it } + val algorithm = Algorithm.RSA256(privateKey) + jwtToken = JWT.create() + .withIssuer("215907") + .withIssuedAt(Instant.now().minusMillis(6_000)) + .withExpiresAt(Instant.now().plusMillis(600000)) + .sign(algorithm) ?: throw JWTCreationException("Could not create JWT", Throwable()) + val github = GitHubBuilder() + .withJwtToken(jwtToken) + .withConnector(GitHubConnector.DEFAULT) + .withEndpoint(baseLink) + .build() + gitHubApp = github.app + val appInstallation = gitHubApp.getInstallationByOrganization("sern-handler") + val installationToken = appInstallation.createToken().create() + gitHub = GitHubBuilder() + .withAppInstallationToken(installationToken.token) + .withEndpoint(baseLink) + .build() + + } + } + + fun fetchRepoAsync(name: String) : Deferred> { + return async { + try { + Either.Right(gitHub.getRepository("$orgName/$name")) + } catch (e: Throwable) { + Either.Left(e.message ?: "Something went wrong while trying to fetch repository") + } + + } + } + fun fetchPullRequestAsync(repo : GHRepository, id: Int) : Deferred> { + return async { + try { + Either.Right(repo.getPullRequest(id)) + } catch(e : Throwable) { + Either.Left("Could not find a pull request #$id") + } + } + } + suspend fun on( + eventName: String, + fn: suspend (String) -> Unit + ) { + Client.launch { + eventEmitter.events.collect { + when (it) { + "Hello" -> fn(it) + } + } + } + } + + private fun processKey() = resource { + object{}.javaClass.getResourceAsStream("/private_key.pem") + ?.bufferedReader() + ?.useLines { br -> + val privateKey = br.filter { str -> + str != "-----BEGIN PRIVATE KEY-----" && str != "-----END PRIVATE KEY-----" + } + val seq = privateKey.joinToString("") + val encoded = Base64.getDecoder().decode(seq) + val kf = KeyFactory.getInstance("RSA") + val keySpec = PKCS8EncodedKeySpec(encoded) + (kf.generatePrivate(keySpec) as RSAPrivateKey) + } + } release { + println("Released resources from reading pem") + } + + /** + * This should start last in order to prevent blocking of thread and listeners + */ + fun startWebhookListener() { + server.start(wait = true) + } +} \ No newline at end of file diff --git a/src/main/kotlin/EventEmitter.kt b/src/main/kotlin/EventEmitter.kt new file mode 100644 index 0000000..24fb0e4 --- /dev/null +++ b/src/main/kotlin/EventEmitter.kt @@ -0,0 +1,12 @@ +import kotlinx.coroutines.flow.MutableSharedFlow +import kotlinx.coroutines.flow.asSharedFlow + +typealias Event = String +class EventEmitter { + private val _events = MutableSharedFlow() // private mutable shared flow + val events = _events.asSharedFlow() // publicly exposed as read-only shared flow + + suspend fun produceEvent(event: Event) { + _events.emit(event) // suspends until all subscribers receive it + } +} \ No newline at end of file diff --git a/src/main/kotlin/HttpClientExtensions.kt b/src/main/kotlin/HttpClientExtensions.kt new file mode 100644 index 0000000..f294770 --- /dev/null +++ b/src/main/kotlin/HttpClientExtensions.kt @@ -0,0 +1,64 @@ +import io.ktor.http.* +import io.ktor.server.application.* +import io.ktor.server.request.* +import io.ktor.server.response.* +import io.ktor.server.routing.* +import io.ktor.util.pipeline.* +import kotlinx.coroutines.* +import javax.crypto.Mac +import javax.crypto.spec.SecretKeySpec +import kotlin.experimental.xor + + +fun Application.configureRouting() { + routing { + pullRequests() + } + +} + +fun Routing.pullRequests() { + post("/payload") { + val secret = call.request.headers["X-Hub-Signature-256"]!! + val text = call.receiveText() + if(!HashUtils.secureCompare(secret, HashUtils.sha256(text))) { + call.respond(HttpStatusCode.Unauthorized, "Nice try") + } + launch(Dispatchers.Default) { + Client.eventEmitter.produceEvent(text) + }.join() + } +} + +object HashUtils { + private fun ByteArray.toHex(): String = joinToString(separator = "") { eachByte -> "%02x".format(eachByte) } + + //https://security.stackexchange.com/questions/239054/timing-attacks-in-password-hash-comparisons + fun secureCompare(secret : String, hash: String) : Boolean { + val digesta = secret.toByteArray(); val digestb = hash.toByteArray() + + if (digesta.size and digestb.size == 0) return false + var difference = 0 + for (i in digesta.indices) difference = difference.or(digesta[i].xor(digestb[i]).toInt()) + return difference == 0 + } + /** + * Supported algorithms on Android: + * + * Algorithm Supported API Levels + * MD5 1+ + * SHA-1 1+ + * SHA-224 1-8,22+ + * SHA-256 1+ + * SHA-384 1+ + * SHA-512 1+ + */ + fun sha256(body: String): String { + val key = System.getProperty("WEBHOOK_TOKEN") + val hasher: Mac = Mac.getInstance("HmacSHA256") + hasher.init(SecretKeySpec(key.toByteArray(), "HmacSHA256")) + + val hash: ByteArray = hasher.doFinal(body.toByteArray()) + return "sha256=${hash.toHex()}" + } +} diff --git a/src/main/kotlin/Main.kt b/src/main/kotlin/Main.kt new file mode 100644 index 0000000..e39e838 --- /dev/null +++ b/src/main/kotlin/Main.kt @@ -0,0 +1,21 @@ + +import kotlinx.coroutines.* + +fun main() = runBlocking { + + val client = Client + + client.on("pullRequest") { + println(it + "2") + } + client.on("issue") { + println(it + "3") + } + println("Start program") + println(Thread.currentThread().name) + client.startWebhookListener() +} + + + +