From 63cf5838bd01e73108fda20027181498aadc4ba8 Mon Sep 17 00:00:00 2001
From: Asher <ash@coder.com>
Date: Tue, 2 Apr 2024 14:54:53 -0800
Subject: [PATCH 1/3] Implement automatic port forwarding

---
 .idea/gradle.xml                              |   1 +
 CHANGELOG.md                                  |   4 +-
 README.md                                     |  41 ++-----
 gradle.properties                             |   8 +-
 .../jetbrains/CoderBundle.kt}                 |   6 +-
 .../coder/jetbrains/scanner/PortScanner.kt    |  74 +++++++++++++
 .../services/CoderPortForwardService.kt       | 101 ++++++++++++++++++
 .../MyApplicationActivationListener.kt        |  12 ---
 .../services/MyProjectService.kt              |  17 ---
 .../toolWindow/MyToolWindowFactory.kt         |  45 --------
 src/main/resources/META-INF/plugin.xml        |  18 ++--
 .../resources/messages/CoderBundle.properties |   0
 .../resources/messages/MyBundle.properties    |   3 -
 .../jetbrains/scanner/PortScannerTest.kt      |  24 +++++
 .../jetbrainsbackendcoder/MyPluginTest.kt     |  39 -------
 src/test/testData/rename/foo.xml              |   3 -
 src/test/testData/rename/foo_after.xml        |   3 -
 src/test/testData/tcp                         |  26 +++++
 src/test/testData/tcp6                        |   7 ++
 19 files changed, 257 insertions(+), 175 deletions(-)
 rename src/main/kotlin/com/{github/codeasher/jetbrainsbackendcoder/MyBundle.kt => coder/jetbrains/CoderBundle.kt} (75%)
 create mode 100644 src/main/kotlin/com/coder/jetbrains/scanner/PortScanner.kt
 create mode 100644 src/main/kotlin/com/coder/jetbrains/services/CoderPortForwardService.kt
 delete mode 100644 src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/listeners/MyApplicationActivationListener.kt
 delete mode 100644 src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/services/MyProjectService.kt
 delete mode 100644 src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/toolWindow/MyToolWindowFactory.kt
 create mode 100644 src/main/resources/messages/CoderBundle.properties
 delete mode 100644 src/main/resources/messages/MyBundle.properties
 create mode 100644 src/test/kotlin/com/coder/jetbrains/scanner/PortScannerTest.kt
 delete mode 100644 src/test/kotlin/com/github/codeasher/jetbrainsbackendcoder/MyPluginTest.kt
 delete mode 100644 src/test/testData/rename/foo.xml
 delete mode 100644 src/test/testData/rename/foo_after.xml
 create mode 100644 src/test/testData/tcp
 create mode 100644 src/test/testData/tcp6

diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index ce1c62c..f2c1963 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -5,6 +5,7 @@
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="17" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f897c48..874791d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,5 @@
 <!-- Keep a Changelog guide -> https://keepachangelog.com -->
 
-# jetbrains-backend-coder Changelog
+# coder-gateway-backend changelog
 
 ## [Unreleased]
-### Added
-- Initial scaffold created from [IntelliJ Platform Plugin Template](https://github.com/JetBrains/intellij-platform-plugin-template)
diff --git a/README.md b/README.md
index 4a11cba..9170f66 100644
--- a/README.md
+++ b/README.md
@@ -1,44 +1,17 @@
-# jetbrains-backend-coder
+# coder-gateway-backend
 
-![Build](https://github.com/code-asher/jetbrains-backend-coder/workflows/Build/badge.svg)
-[![Version](https://img.shields.io/jetbrains/plugin/v/PLUGIN_ID.svg)](https://plugins.jetbrains.com/plugin/PLUGIN_ID)
-[![Downloads](https://img.shields.io/jetbrains/plugin/d/PLUGIN_ID.svg)](https://plugins.jetbrains.com/plugin/PLUGIN_ID)
-
-## Template ToDo list
-- [x] Create a new [IntelliJ Platform Plugin Template][template] project.
-- [ ] Get familiar with the [template documentation][template].
-- [ ] Adjust the [pluginGroup](./gradle.properties), [plugin ID](./src/main/resources/META-INF/plugin.xml) and [sources package](./src/main/kotlin).
-- [ ] Adjust the plugin description in `README` (see [Tips][docs:plugin-description])
-- [ ] Review the [Legal Agreements](https://plugins.jetbrains.com/docs/marketplace/legal-agreements.html?from=IJPluginTemplate).
-- [ ] [Publish a plugin manually](https://plugins.jetbrains.com/docs/intellij/publishing-plugin.html?from=IJPluginTemplate) for the first time.
-- [ ] Set the `PLUGIN_ID` in the above README badges.
-- [ ] Set the [Plugin Signing](https://plugins.jetbrains.com/docs/intellij/plugin-signing.html?from=IJPluginTemplate) related [secrets](https://github.com/JetBrains/intellij-platform-plugin-template#environment-variables).
-- [ ] Set the [Deployment Token](https://plugins.jetbrains.com/docs/marketplace/plugin-upload.html?from=IJPluginTemplate).
-- [ ] Click the <kbd>Watch</kbd> button on the top of the [IntelliJ Platform Plugin Template][template] to be notified about releases containing new features and fixes.
+![Build](https://github.com/coder/jetbrains-backend-coder/workflows/Build/badge.svg)
+[![Version](https://img.shields.io/jetbrains/plugin/v/coder-gateway-backend.svg)](https://plugins.jetbrains.com/plugin/coder-gateway-backend)
+[![Downloads](https://img.shields.io/jetbrains/plugin/d/coder-gateway-backend.svg)](https://plugins.jetbrains.com/plugin/coder-gateway-backend)
 
 <!-- Plugin description -->
-This Fancy IntelliJ Platform Plugin is going to be your implementation of the brilliant ideas that you have.
-
-This specific section is a source for the [plugin.xml](/src/main/resources/META-INF/plugin.xml) file which will be extracted by the [Gradle](/build.gradle.kts) during the build process.
-
-To keep everything working, do not remove `<!-- ... -->` sections. 
+This plugin is meant to be installed on a remote machine and used as a companion
+to using Coder through Gateway.
 <!-- Plugin description end -->
 
 ## Installation
 
-- Using the IDE built-in plugin system:
-  
-  <kbd>Settings/Preferences</kbd> > <kbd>Plugins</kbd> > <kbd>Marketplace</kbd> > <kbd>Search for "jetbrains-backend-coder"</kbd> >
-  <kbd>Install</kbd>
-  
 - Manually:
 
-  Download the [latest release](https://github.com/code-asher/jetbrains-backend-coder/releases/latest) and install it manually using
+  Download the [latest release](https://github.com/coder/jetbrains-backend-coder/releases/latest) and install it manually using
   <kbd>Settings/Preferences</kbd> > <kbd>Plugins</kbd> > <kbd>⚙️</kbd> > <kbd>Install plugin from disk...</kbd>
-
-
----
-Plugin based on the [IntelliJ Platform Plugin Template][template].
-
-[template]: https://github.com/JetBrains/intellij-platform-plugin-template
-[docs:plugin-description]: https://plugins.jetbrains.com/docs/intellij/plugin-user-experience.html#plugin-description-and-presentation
diff --git a/gradle.properties b/gradle.properties
index 6a8026b..31c7cec 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,8 +1,8 @@
 # IntelliJ Platform Artifacts Repositories -> https://plugins.jetbrains.com/docs/intellij/intellij-artifacts.html
 
-pluginGroup = com.github.codeasher.jetbrainsbackendcoder
-pluginName = jetbrains-backend-coder
-pluginRepositoryUrl = https://github.com/code-asher/jetbrains-backend-coder
+pluginGroup = com.coder.jetbrains
+pluginName = coder-gateway-backend
+pluginRepositoryUrl = https://github.com/coder/jetbrains-backend-coder
 # SemVer format -> https://semver.org
 pluginVersion = 0.0.1
 
@@ -16,7 +16,7 @@ platformVersion = 2022.3.3
 
 # Plugin Dependencies -> https://plugins.jetbrains.com/docs/intellij/plugin-dependencies.html
 # Example: platformPlugins = com.intellij.java, com.jetbrains.php:203.4449.22
-platformPlugins =
+platformPlugins=com.jetbrains.codeWithMe, org.jetbrains.plugins.terminal
 
 # Gradle Releases -> https://github.com/gradle/gradle/releases
 gradleVersion = 8.6
diff --git a/src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/MyBundle.kt b/src/main/kotlin/com/coder/jetbrains/CoderBundle.kt
similarity index 75%
rename from src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/MyBundle.kt
rename to src/main/kotlin/com/coder/jetbrains/CoderBundle.kt
index 233c90c..d13ebb3 100644
--- a/src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/MyBundle.kt
+++ b/src/main/kotlin/com/coder/jetbrains/CoderBundle.kt
@@ -1,13 +1,13 @@
-package com.github.codeasher.jetbrainsbackendcoder
+package com.coder.jetbrains
 
 import com.intellij.DynamicBundle
 import org.jetbrains.annotations.NonNls
 import org.jetbrains.annotations.PropertyKey
 
 @NonNls
-private const val BUNDLE = "messages.MyBundle"
+private const val BUNDLE = "messages.CoderBundle"
 
-object MyBundle : DynamicBundle(BUNDLE) {
+object CoderBundle : DynamicBundle(BUNDLE) {
 
     @JvmStatic
     fun message(@PropertyKey(resourceBundle = BUNDLE) key: String, vararg params: Any) =
diff --git a/src/main/kotlin/com/coder/jetbrains/scanner/PortScanner.kt b/src/main/kotlin/com/coder/jetbrains/scanner/PortScanner.kt
new file mode 100644
index 0000000..91aa055
--- /dev/null
+++ b/src/main/kotlin/com/coder/jetbrains/scanner/PortScanner.kt
@@ -0,0 +1,74 @@
+package com.coder.jetbrains.scanner
+
+import java.io.File
+
+private val sources = listOf(
+    "/proc/net/tcp",
+    "/proc/net/tcp6"
+)
+
+private val whitespaceRe = "\\s+".toRegex()
+
+/**
+ * Parse a TCP socket /proc interface.
+ */
+fun readTcpFile(file: File): Set<Int> {
+    /*
+     * A typical entry of /proc/net/tcp would look like this (only the first
+     * four parts since that is all we use):
+     *
+     * 46: 010310AC:9C4C 030310AC:1770 01
+     * |      |      |      |      |   |--> connection state
+     * |      |      |      |      |------> remote TCP port number
+     * |      |      |      |-------------> remote IPv4 address
+     * |      |      |--------------------> local TCP port number
+     * |      |---------------------------> local IPv4 address
+     * |----------------------------------> number of entry
+     *
+     * connection states:
+     *   TCP_ESTABLISHED,
+     *   TCP_SYN_SENT,
+     *   TCP_SYN_RECV,
+     *   TCP_FIN_WAIT1,
+     *   TCP_FIN_WAIT2,
+     *   TCP_TIME_WAIT,
+     *   TCP_CLOSE,
+     *   TCP_CLOSE_WAIT,
+     *   TCP_LAST_ACK,
+     *   TCP_LISTEN,
+     *   TCP_CLOSING,
+     *   TCP_NEW_SYN_RECV,
+     */
+    return try {
+        file.readLines()
+            .asSequence()
+            // Fields are separated by spaces.
+            .map { it.trim().split(whitespaceRe) }
+            // Only TCP_LISTEN.
+            .filter { it.size >= 4 && it[3] == "0A" }
+            // Local address.
+            .map { it[1].split(":") }
+            .filter { it.size == 2 }
+            // Decode port from hex.
+            .map { it[1].toIntOrNull(16) }
+            .filterNotNull()
+            .toSet()
+    } catch (ex: Exception) {
+        // TODO: Log this exception?
+        emptySet()
+    }
+}
+
+/**
+ * Return a list of ports with listening TCP sockets.  It does not differentiate
+ * between ipv4 and ipv6, and it does not return addresses since the forwarding
+ * API does not appear to let us give it an address anyway.
+ *
+ * It only supports Linux, as that is the only place remote IDEs can run anyway.
+ */
+fun listeningPorts(): Set<Int> {
+    // REVIEW: We could instead query /workspaceagents/me/listening-ports (after
+    // adding it to coderd) which would let us share the port scanning code with
+    // the agent?
+    return sources.flatMap { readTcpFile(File(it)) }.toSet()
+}
diff --git a/src/main/kotlin/com/coder/jetbrains/services/CoderPortForwardService.kt b/src/main/kotlin/com/coder/jetbrains/services/CoderPortForwardService.kt
new file mode 100644
index 0000000..8fb1c47
--- /dev/null
+++ b/src/main/kotlin/com/coder/jetbrains/services/CoderPortForwardService.kt
@@ -0,0 +1,101 @@
+package com.coder.jetbrains.services
+
+import com.coder.jetbrains.scanner.listeningPorts
+import com.intellij.openapi.Disposable
+import com.intellij.openapi.components.service
+import com.intellij.openapi.diagnostic.thisLogger
+import com.intellij.util.application
+import com.jetbrains.rd.platform.codeWithMe.portForwarding.ClientPortAttributes
+import com.jetbrains.rd.platform.codeWithMe.portForwarding.ClientPortPickingStrategy
+import com.jetbrains.rd.platform.codeWithMe.portForwarding.PerClientPortForwardingManager
+import com.jetbrains.rd.platform.codeWithMe.portForwarding.PortAlreadyForwardedException
+import com.jetbrains.rd.platform.codeWithMe.portForwarding.PortType
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
+
+/**
+ * Automatically forward ports that have something listening on them by scanning
+ * /proc/net/ipv{,6} at a regular interval.
+ *
+ * If a process stops listening the port forward is removed.
+ *
+ * If the user manually removes a port, it will be added back at the next
+ * interval.
+ */
+@Suppress("UnstableApiUsage")
+class CoderPortForwardService(
+    private val cs: CoroutineScope,
+): Disposable {
+    private var poller: Job? = null
+
+    // TODO: Make customizable.
+    private val ignoreList = setOf(
+        22,   // SSH
+        5990, // Default JetBrains remote port.
+    )
+
+    init {
+        thisLogger().info("initializing port forwarding service")
+        application.invokeLater {
+            start()
+        }
+    }
+
+    override fun dispose() {
+        poller?.cancel()
+    }
+
+    private fun start() {
+        thisLogger().info("starting port scanner")
+        poller = cs.launch {
+            while (isActive) {
+                thisLogger().debug("scanning for ports")
+                val listeningPorts = listeningPorts().subtract(ignoreList)
+                val manager = service<PerClientPortForwardingManager>()
+                val ports = manager.getPorts()
+                // Remove ports that are no longer listening.
+                // TODO: Only remove ones we added?
+                ports.forEach { old ->
+                    if (!listeningPorts.contains(old.hostPortNumber)) {
+                        try {
+                            thisLogger().info("removing port ${old.hostPortNumber}")
+                            manager.removePort(old)
+                        } catch (ex: Exception) {
+                            thisLogger().error("failed to remove port $old", ex)
+                        }
+                    }
+                }
+                // Add ports that are not yet listening.
+                // TODO: Avoid adding if the user removed it previously?
+                listeningPorts.forEach {
+                    try {
+                        thisLogger().info("forwarding port $it")
+                        forwardPort(it)
+                    } catch (ex: PortAlreadyForwardedException) {
+                        // All good.
+                    } catch (ex: Exception) {
+                        thisLogger().error("failed to forward port $it", ex)
+                    }
+                }
+                // TODO: Customizable interval.
+                delay(5000)
+            }
+        }
+    }
+
+    /**
+     * Add a port forward to the provided port on the host.
+     *
+     * TODO: If privileged, use a different port.
+     */
+    private fun forwardPort(port: Int) {
+        val manager = service<PerClientPortForwardingManager>()
+        manager.forwardPort(port, PortType.TCP, setOf("coder"), ClientPortAttributes(
+            preferredPortNumber = port,
+            strategy = ClientPortPickingStrategy.REASSIGN_WHEN_BUSY,
+        ))
+    }
+}
diff --git a/src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/listeners/MyApplicationActivationListener.kt b/src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/listeners/MyApplicationActivationListener.kt
deleted file mode 100644
index 953ae8d..0000000
--- a/src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/listeners/MyApplicationActivationListener.kt
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.github.codeasher.jetbrainsbackendcoder.listeners
-
-import com.intellij.openapi.application.ApplicationActivationListener
-import com.intellij.openapi.diagnostic.thisLogger
-import com.intellij.openapi.wm.IdeFrame
-
-internal class MyApplicationActivationListener : ApplicationActivationListener {
-
-    override fun applicationActivated(ideFrame: IdeFrame) {
-        thisLogger().warn("Don't forget to remove all non-needed sample code files with their corresponding registration entries in `plugin.xml`.")
-    }
-}
diff --git a/src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/services/MyProjectService.kt b/src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/services/MyProjectService.kt
deleted file mode 100644
index afe48e5..0000000
--- a/src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/services/MyProjectService.kt
+++ /dev/null
@@ -1,17 +0,0 @@
-package com.github.codeasher.jetbrainsbackendcoder.services
-
-import com.intellij.openapi.components.Service
-import com.intellij.openapi.diagnostic.thisLogger
-import com.intellij.openapi.project.Project
-import com.github.codeasher.jetbrainsbackendcoder.MyBundle
-
-@Service(Service.Level.PROJECT)
-class MyProjectService(project: Project) {
-
-    init {
-        thisLogger().info(MyBundle.message("projectService", project.name))
-        thisLogger().warn("Don't forget to remove all non-needed sample code files with their corresponding registration entries in `plugin.xml`.")
-    }
-
-    fun getRandomNumber() = (1..100).random()
-}
diff --git a/src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/toolWindow/MyToolWindowFactory.kt b/src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/toolWindow/MyToolWindowFactory.kt
deleted file mode 100644
index ce1a8e9..0000000
--- a/src/main/kotlin/com/github/codeasher/jetbrainsbackendcoder/toolWindow/MyToolWindowFactory.kt
+++ /dev/null
@@ -1,45 +0,0 @@
-package com.github.codeasher.jetbrainsbackendcoder.toolWindow
-
-import com.intellij.openapi.components.service
-import com.intellij.openapi.diagnostic.thisLogger
-import com.intellij.openapi.project.Project
-import com.intellij.openapi.wm.ToolWindow
-import com.intellij.openapi.wm.ToolWindowFactory
-import com.intellij.ui.components.JBLabel
-import com.intellij.ui.components.JBPanel
-import com.intellij.ui.content.ContentFactory
-import com.github.codeasher.jetbrainsbackendcoder.MyBundle
-import com.github.codeasher.jetbrainsbackendcoder.services.MyProjectService
-import javax.swing.JButton
-
-
-class MyToolWindowFactory : ToolWindowFactory {
-
-    init {
-        thisLogger().warn("Don't forget to remove all non-needed sample code files with their corresponding registration entries in `plugin.xml`.")
-    }
-
-    override fun createToolWindowContent(project: Project, toolWindow: ToolWindow) {
-        val myToolWindow = MyToolWindow(toolWindow)
-        val content = ContentFactory.getInstance().createContent(myToolWindow.getContent(), null, false)
-        toolWindow.contentManager.addContent(content)
-    }
-
-    override fun shouldBeAvailable(project: Project) = true
-
-    class MyToolWindow(toolWindow: ToolWindow) {
-
-        private val service = toolWindow.project.service<MyProjectService>()
-
-        fun getContent() = JBPanel<JBPanel<*>>().apply {
-            val label = JBLabel(MyBundle.message("randomLabel", "?"))
-
-            add(label)
-            add(JButton(MyBundle.message("shuffle")).apply {
-                addActionListener {
-                    label.text = MyBundle.message("randomLabel", service.getRandomNumber())
-                }
-            })
-        }
-    }
-}
diff --git a/src/main/resources/META-INF/plugin.xml b/src/main/resources/META-INF/plugin.xml
index 62a8d20..918e5f4 100644
--- a/src/main/resources/META-INF/plugin.xml
+++ b/src/main/resources/META-INF/plugin.xml
@@ -1,18 +1,18 @@
 <!-- Plugin Configuration File. Read more: https://plugins.jetbrains.com/docs/intellij/plugin-configuration-file.html -->
 <idea-plugin>
-    <id>com.github.codeasher.jetbrainsbackendcoder</id>
-    <name>jetbrains-backend-coder</name>
-    <vendor>code-asher</vendor>
+    <id>com.coder.jetbrains</id>
+    <name>Coder Gateway Backend</name>
+    <vendor>coder</vendor>
 
     <depends>com.intellij.modules.platform</depends>
+    <dependencies>
+        <plugin id="com.jetbrains.codeWithMe"/>
+    </dependencies>
 
-    <resource-bundle>messages.MyBundle</resource-bundle>
+    <resource-bundle>messages.CoderBundle</resource-bundle>
 
     <extensions defaultExtensionNs="com.intellij">
-        <toolWindow factoryClass="com.github.codeasher.jetbrainsbackendcoder.toolWindow.MyToolWindowFactory" id="MyToolWindow"/>
+        <applicationService serviceImplementation="com.coder.jetbrains.services.CoderPortForwardService"
+                            client="controller" preload="true"/>
     </extensions>
-
-    <applicationListeners>
-        <listener class="com.github.codeasher.jetbrainsbackendcoder.listeners.MyApplicationActivationListener" topic="com.intellij.openapi.application.ApplicationActivationListener"/>
-    </applicationListeners>
 </idea-plugin>
diff --git a/src/main/resources/messages/CoderBundle.properties b/src/main/resources/messages/CoderBundle.properties
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/resources/messages/MyBundle.properties b/src/main/resources/messages/MyBundle.properties
deleted file mode 100644
index 2e041d8..0000000
--- a/src/main/resources/messages/MyBundle.properties
+++ /dev/null
@@ -1,3 +0,0 @@
-projectService=Project service: {0}
-randomLabel=The random number is: {0}
-shuffle=Shuffle
diff --git a/src/test/kotlin/com/coder/jetbrains/scanner/PortScannerTest.kt b/src/test/kotlin/com/coder/jetbrains/scanner/PortScannerTest.kt
new file mode 100644
index 0000000..95e63c7
--- /dev/null
+++ b/src/test/kotlin/com/coder/jetbrains/scanner/PortScannerTest.kt
@@ -0,0 +1,24 @@
+package com.coder.jetbrains.scanner
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import java.io.File
+import java.nio.file.Path
+
+internal class PortScannerTest {
+    @Test
+    fun testNoFile() {
+        assertEquals(emptySet<Int>(), readTcpFile(File("/does/not/exist")))
+    }
+
+    @Test
+    fun testScanner() {
+        val tests = listOf(
+            Pair("tcp", setOf(59574, 13337, 59738, 13339, 2112, 2113, 5990, 6060, 63342)),
+            Pair("tcp6", setOf(8000, 6901, 22)))
+        tests.forEach {
+            assertEquals(it.second,
+                readTcpFile(Path.of("src/test/testData").resolve(it.first).toFile()))
+        }
+    }
+}
diff --git a/src/test/kotlin/com/github/codeasher/jetbrainsbackendcoder/MyPluginTest.kt b/src/test/kotlin/com/github/codeasher/jetbrainsbackendcoder/MyPluginTest.kt
deleted file mode 100644
index 8fb778f..0000000
--- a/src/test/kotlin/com/github/codeasher/jetbrainsbackendcoder/MyPluginTest.kt
+++ /dev/null
@@ -1,39 +0,0 @@
-package com.github.codeasher.jetbrainsbackendcoder
-
-import com.intellij.ide.highlighter.XmlFileType
-import com.intellij.openapi.components.service
-import com.intellij.psi.xml.XmlFile
-import com.intellij.testFramework.TestDataPath
-import com.intellij.testFramework.fixtures.BasePlatformTestCase
-import com.intellij.util.PsiErrorElementUtil
-import com.github.codeasher.jetbrainsbackendcoder.services.MyProjectService
-
-@TestDataPath("\$CONTENT_ROOT/src/test/testData")
-class MyPluginTest : BasePlatformTestCase() {
-
-    fun testXMLFile() {
-        val psiFile = myFixture.configureByText(XmlFileType.INSTANCE, "<foo>bar</foo>")
-        val xmlFile = assertInstanceOf(psiFile, XmlFile::class.java)
-
-        assertFalse(PsiErrorElementUtil.hasErrors(project, xmlFile.virtualFile))
-
-        assertNotNull(xmlFile.rootTag)
-
-        xmlFile.rootTag?.let {
-            assertEquals("foo", it.name)
-            assertEquals("bar", it.value.text)
-        }
-    }
-
-    fun testRename() {
-        myFixture.testRename("foo.xml", "foo_after.xml", "a2")
-    }
-
-    fun testProjectService() {
-        val projectService = project.service<MyProjectService>()
-
-        assertNotSame(projectService.getRandomNumber(), projectService.getRandomNumber())
-    }
-
-    override fun getTestDataPath() = "src/test/testData/rename"
-}
diff --git a/src/test/testData/rename/foo.xml b/src/test/testData/rename/foo.xml
deleted file mode 100644
index b21e9f2..0000000
--- a/src/test/testData/rename/foo.xml
+++ /dev/null
@@ -1,3 +0,0 @@
-<root>
-    <a<caret>1>Foo</a1>
-</root>
diff --git a/src/test/testData/rename/foo_after.xml b/src/test/testData/rename/foo_after.xml
deleted file mode 100644
index 980ca96..0000000
--- a/src/test/testData/rename/foo_after.xml
+++ /dev/null
@@ -1,3 +0,0 @@
-<root>
-    <a2>Foo</a2>
-</root>
diff --git a/src/test/testData/tcp b/src/test/testData/tcp
new file mode 100644
index 0000000..f9ad216
--- /dev/null
+++ b/src/test/testData/tcp
@@ -0,0 +1,26 @@
+  sl  local_address rem_address   st tx_queue rx_queue tr tm->when retrnsmt   uid  timeout inode
+   0: 0100007F:E8B6 00000000:0000 0A 00000000:00000000 00:00000000 00000000  1000        0 2852483014 1 0000000000000000 100 0 0 10 0
+   1: 0100007F:3419 00000000:0000 0A 00000000:00000000 00:00000000 00000000  1000        0 2850909277 1 0000000000000000 100 0 0 10 0
+   2: 0100007F:E95A 00000000:0000 0A 00000000:00000000 00:00000000 00000000  1000        0 2852511084 1 0000000000000000 100 0 0 10 0
+   3: 0100007F:341B 00000000:0000 0A 00000000:00000000 00:00000000 00000000  1000        0 2850888451 1 0000000000000000 100 0 0 10 0
+   4: 0100007F:0840 00000000:0000 0A 00000000:00000000 00:00000000 00000000  1000        0 2850894076 1 0000000000000000 100 0 0 10 0
+   5: 0100007F:0841 00000000:0000 0A 00000000:00000000 00:00000000 00000000  1000        0 2850862852 1 0000000000000000 100 0 0 10 0
+   6: 0100007F:1766 00000000:0000 0A 00000000:00000000 00:00000000 00000000  1000        0 2852492688 1 0000000000000000 100 0 0 10 0
+   7: 0100007F:17AC 00000000:0000 0A 00000000:00000000 00:00000000 00000000  1000        0 2850862850 1 0000000000000000 100 0 0 10 0
+   8: 0100007F:F76E 00000000:0000 0A 00000000:00000000 00:00000000 00000000  1002        0 2852518037 1 0000000000000000 100 0 0 10 0
+   9: 0100007F:BA2E 0100007F:3419 06 00000000:00000000 03:00000D1E 00000000     0        0 0 3 0000000000000000
+  10: 0100007F:83B4 0100007F:3419 06 00000000:00000000 03:00001106 00000000     0        0 0 3 0000000000000000
+  11: 2F0014AC:8FEC C73F4322:01BB 01 00000000:00000000 02:000004F1 00000000  1000        0 2855838421 2 0000000000000000 24 6 24 10 -1
+  12: 0100007F:DAA6 0100007F:3419 06 00000000:00000000 03:0000054D 00000000     0        0 0 3 0000000000000000
+  13: 0100007F:8372 0100007F:3419 06 00000000:00000000 03:00000F12 00000000     0        0 0 3 0000000000000000
+  14: 0100007F:B9D0 0100007F:3419 06 00000000:00000000 03:00000B2A 00000000     0        0 0 3 0000000000000000
+  15: 0100007F:A02C 0100007F:3419 06 00000000:00000000 03:000016E3 00000000     0        0 0 3 0000000000000000
+  16: 0100007F:8020 0100007F:3419 06 00000000:00000000 03:00000164 00000000     0        0 0 3 0000000000000000
+  17: 0100007F:8FC4 0100007F:3419 06 00000000:00000000 03:00000741 00000000     0        0 0 3 0000000000000000
+  18: 0100007F:C050 0100007F:1766 01 00000000:00000000 02:00000364 00000000  1000        0 2852513993 3 0000000000000000 20 4 30 10 -1
+  19: 2F0014AC:A228 C73F4322:01BB 01 00000000:00000000 02:00000082 00000000  1000        0 2855820903 2 0000000000000000 24 4 30 10 -1
+  20: 0100007F:DA42 0100007F:3419 06 00000000:00000000 03:00000358 00000000     0        0 0 3 0000000000000000
+  21: 0100007F:CBA0 0100007F:3419 06 00000000:00000000 03:000012FB 00000000     0        0 0 3 0000000000000000
+  22: 0100007F:9014 0100007F:3419 06 00000000:00000000 03:00000936 00000000     0        0 0 3 0000000000000000
+  23: 0100007F:CBF2 0100007F:3419 06 00000000:00000000 03:000014EF 00000000     0        0 0 3 0000000000000000
+  24: 0100007F:1766 0100007F:C050 01 00000000:00000000 00:00000000 00000000  1000        0 2852499944 2 0000000000000000 20 4 1 10 -1
diff --git a/src/test/testData/tcp6 b/src/test/testData/tcp6
new file mode 100644
index 0000000..378c04d
--- /dev/null
+++ b/src/test/testData/tcp6
@@ -0,0 +1,7 @@
+  sl  local_address                         remote_address                        st tx_queue rx_queue tr tm->when retrnsmt   uid  timeout inode
+   0: 00000000000000000000000000000000:1F40 00000000000000000000000000000000:0000 0A 00000000:00000000 00:00000000 00000000  1000        0 2856915312 1 0000000000000000 100 0 0 10 0
+   1: 00000000000000000000000000000000:1AF5 00000000000000000000000000000000:0000 0A 00000000:00000000 00:00000000 00000000  1002        0 8939662 1 0000000000000000 100 0 0 10 0
+   2: 00000000000000000000000000000000:0016 00000000000000000000000000000000:0000 0A 00000000:00000000 00:00000000 00000000     0        0 4631 1 0000000000000000 100 0 0 10 0
+   3: 0000000000000000FFFF00000100007F:1AF5 0000000000000000FFFF00000100007F:8F82 01 00000000:00000000 02:0000057E 00000000  1002        0 8939137 3 0000000000000000 20 4 20 10 -1
+   4: 0000000000000000FFFF00000100007F:0016 0000000000000000FFFF00000100007F:D2D0 01 00000000:00000000 02:000A2361 00000000     0        0 6911372 2 0000000000000000 20 4 31 10 -1
+   1: 00000000000000000000000000000000:F76E 00000000000000000000000000000000:0000 01 00000000:00000000 00:00000000 00000000  1002        0 8939662 1 0000000000000000 100 0 0 10 0

From ce7c1312b5bf549862e6161688078240b1159b0f Mon Sep 17 00:00:00 2001
From: Asher <ash@coder.com>
Date: Tue, 2 Apr 2024 14:55:29 -0800
Subject: [PATCH 2/3] Add icons

---
 src/main/resources/META-INF/pluginIcon.svg      | 15 +++++++++++++++
 src/main/resources/META-INF/pluginIcon_dark.svg | 15 +++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 src/main/resources/META-INF/pluginIcon.svg
 create mode 100644 src/main/resources/META-INF/pluginIcon_dark.svg

diff --git a/src/main/resources/META-INF/pluginIcon.svg b/src/main/resources/META-INF/pluginIcon.svg
new file mode 100644
index 0000000..15696c6
--- /dev/null
+++ b/src/main/resources/META-INF/pluginIcon.svg
@@ -0,0 +1,15 @@
+<svg width="52" height="37" viewBox="0 0 52 37" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <g clip-path="url(#clip0_4116_5204)">
+        <path d="M50.4353 15.8152C49.4054 15.8152 48.7188 15.219 48.7188 13.9952V6.96621C48.7188 2.47896 46.8462 0 42.0086 0H39.7615V4.73827H40.4482C42.3519 4.73827 43.257 5.77379 43.257 7.62517V13.8383C43.257 16.5369 44.0684 17.6352 45.8474 18.2C44.0684 18.7335 43.257 19.8631 43.257 22.5617C43.257 24.0993 43.257 25.6369 43.257 27.1745C43.257 28.461 43.257 29.7162 42.9137 31.0027C42.5704 32.1952 42.0086 33.3248 41.2284 34.2975C40.7914 34.8625 40.2921 35.3331 39.7304 35.7725V36.4H41.9774C46.815 36.4 48.6876 33.921 48.6876 29.4338V22.4048C48.6876 21.1496 49.343 20.5848 50.4042 20.5848H51.6838V15.8465H50.4353V15.8152Z" fill="#6E6E6E"/>
+        <path d="M35.1425 7.15546H28.2139C28.0578 7.15546 27.9331 7.02994 27.9331 6.87305V6.33961C27.9331 6.18271 28.0578 6.05719 28.2139 6.05719H35.1738C35.3297 6.05719 35.4546 6.18271 35.4546 6.33961V6.87305C35.4546 7.02994 35.2985 7.15546 35.1425 7.15546Z" fill="#6E6E6E"/>
+        <path d="M36.3282 13.9331H31.2723C31.1162 13.9331 30.9913 13.8075 30.9913 13.6506V13.1172C30.9913 12.9603 31.1162 12.8348 31.2723 12.8348H36.3282C36.4843 12.8348 36.6091 12.9603 36.6091 13.1172V13.6506C36.6091 13.7762 36.4843 13.9331 36.3282 13.9331Z" fill="#6E6E6E"/>
+        <path d="M38.3259 10.5443H28.2139C28.0578 10.5443 27.9331 10.4187 27.9331 10.2619V9.7284C27.9331 9.5715 28.0578 9.446 28.2139 9.446H38.2947C38.4508 9.446 38.5756 9.5715 38.5756 9.7284V10.2619C38.5756 10.3874 38.482 10.5443 38.3259 10.5443Z" fill="#6E6E6E"/>
+        <path d="M20.193 8.69207C20.8796 8.69207 21.5662 8.75483 22.2216 8.91173V7.62517C22.2216 5.80517 23.1579 4.73827 25.0306 4.73827H25.7171V0H23.47C18.6324 0 16.7599 2.47896 16.7599 6.96621V9.28827C17.8522 8.91173 19.007 8.69207 20.193 8.69207Z" fill="#6E6E6E"/>
+        <path d="M40.4482 25.7617C39.9488 21.7765 36.8902 18.4503 32.9577 17.6972C31.8654 17.4776 30.773 17.4462 29.7119 17.6345C29.6807 17.6345 29.6807 17.603 29.6495 17.603C27.9329 13.9945 24.2502 11.6096 20.2553 11.6096C16.2604 11.6096 12.6089 13.9317 10.8611 17.5403C10.8299 17.5403 10.8299 17.5717 10.7986 17.5717C9.6751 17.4462 8.55154 17.5089 7.42797 17.7913C3.55794 18.7327 0.6242 21.9962 0.0936299 25.9499C0.0312099 26.3578 0 26.7658 0 27.1424C0 28.3347 0.81146 29.433 1.99743 29.5899C3.4643 29.8097 4.74391 28.6799 4.7127 27.2365C4.7127 27.0168 4.7127 26.7658 4.74391 26.5462C4.9936 24.5378 6.52288 22.8434 8.52032 22.3727C9.14452 22.2158 9.76872 22.1845 10.3617 22.2786C12.2655 22.5297 14.1381 21.5568 14.9496 19.8624C15.5426 18.6072 16.4789 17.5089 17.7273 16.9127C19.1004 16.2537 20.661 16.1597 22.0967 16.6617C23.5947 17.1951 24.7183 18.3247 25.4049 19.7368C26.1227 21.1176 26.466 22.0903 27.9954 22.2786C28.6195 22.3727 30.3673 22.3413 31.0228 22.3099C32.3024 22.3099 33.582 22.7493 34.4871 23.6593C35.08 24.2868 35.5169 25.0713 35.7042 25.9499C35.9851 27.362 35.6418 28.7741 34.7991 29.841C34.2061 30.5941 33.3946 31.1589 32.4895 31.4099C32.0526 31.5355 31.6157 31.5668 31.1787 31.5668C30.9291 31.5668 30.5858 31.5668 30.1801 31.5668C28.9317 31.5668 26.2788 31.5668 24.2813 31.5668C22.9082 31.5668 21.8158 30.4686 21.8158 29.0878V24.4437V19.8937C21.8158 19.5172 21.5037 19.2034 21.1292 19.2034H20.1616C18.2578 19.2347 16.7285 21.3686 16.7285 23.6278C16.7285 25.8872 16.7285 31.8807 16.7285 31.8807C16.7285 34.3282 18.6947 36.3051 21.1292 36.3051C21.1292 36.3051 31.9591 36.2737 32.115 36.2737C34.6118 36.0227 36.9214 34.7362 38.4819 32.7593C40.0424 30.8451 40.7602 28.3347 40.4482 25.7617Z" fill="#6E6E6E"/>
+    </g>
+    <defs>
+        <clipPath id="clip0_4116_5204">
+            <rect width="52" height="36.4" fill="white"/>
+        </clipPath>
+    </defs>
+</svg>
\ No newline at end of file
diff --git a/src/main/resources/META-INF/pluginIcon_dark.svg b/src/main/resources/META-INF/pluginIcon_dark.svg
new file mode 100644
index 0000000..64d036a
--- /dev/null
+++ b/src/main/resources/META-INF/pluginIcon_dark.svg
@@ -0,0 +1,15 @@
+<svg width="52" height="37" viewBox="0 0 52 37" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_4116_5238)">
+<path d="M50.4353 15.8152C49.4054 15.8152 48.7188 15.219 48.7188 13.9952V6.96621C48.7188 2.47896 46.8462 0 42.0086 0H39.7615V4.73827H40.4482C42.3519 4.73827 43.257 5.77379 43.257 7.62517V13.8383C43.257 16.5369 44.0684 17.6352 45.8474 18.2C44.0684 18.7335 43.257 19.8631 43.257 22.5617C43.257 24.0993 43.257 25.6369 43.257 27.1745C43.257 28.461 43.257 29.7162 42.9137 31.0027C42.5704 32.1952 42.0086 33.3248 41.2284 34.2975C40.7914 34.8625 40.2921 35.3331 39.7304 35.7725V36.4H41.9774C46.815 36.4 48.6876 33.921 48.6876 29.4338V22.4048C48.6876 21.1496 49.343 20.5848 50.4042 20.5848H51.6838V15.8465H50.4353V15.8152Z" fill="#AFB1B3"/>
+<path d="M35.1425 7.15546H28.2139C28.0578 7.15546 27.9331 7.02994 27.9331 6.87305V6.33961C27.9331 6.18271 28.0578 6.05719 28.2139 6.05719H35.1738C35.3297 6.05719 35.4546 6.18271 35.4546 6.33961V6.87305C35.4546 7.02994 35.2985 7.15546 35.1425 7.15546Z" fill="#AFB1B3"/>
+<path d="M36.3282 13.9331H31.2723C31.1162 13.9331 30.9913 13.8075 30.9913 13.6506V13.1172C30.9913 12.9603 31.1162 12.8348 31.2723 12.8348H36.3282C36.4843 12.8348 36.6091 12.9603 36.6091 13.1172V13.6506C36.6091 13.7762 36.4843 13.9331 36.3282 13.9331Z" fill="#AFB1B3"/>
+<path d="M38.3259 10.5443H28.2139C28.0578 10.5443 27.9331 10.4187 27.9331 10.2619V9.7284C27.9331 9.5715 28.0578 9.44599 28.2139 9.44599H38.2947C38.4508 9.44599 38.5756 9.5715 38.5756 9.7284V10.2619C38.5756 10.3874 38.482 10.5443 38.3259 10.5443Z" fill="#AFB1B3"/>
+<path d="M20.193 8.69207C20.8796 8.69207 21.5662 8.75483 22.2216 8.91173V7.62517C22.2216 5.80517 23.1579 4.73827 25.0306 4.73827H25.7171V0H23.47C18.6324 0 16.7599 2.47896 16.7599 6.96621V9.28827C17.8522 8.91173 19.007 8.69207 20.193 8.69207Z" fill="#AFB1B3"/>
+<path d="M40.4482 25.7617C39.9488 21.7765 36.8902 18.4503 32.9577 17.6972C31.8654 17.4776 30.773 17.4462 29.7119 17.6345C29.6807 17.6345 29.6807 17.603 29.6495 17.603C27.9329 13.9945 24.2502 11.6096 20.2553 11.6096C16.2604 11.6096 12.6089 13.9317 10.8611 17.5403C10.8299 17.5403 10.8299 17.5717 10.7986 17.5717C9.6751 17.4462 8.55154 17.5089 7.42797 17.7913C3.55794 18.7327 0.6242 21.9962 0.0936299 25.9499C0.0312099 26.3578 0 26.7658 0 27.1424C0 28.3347 0.81146 29.433 1.99743 29.5899C3.4643 29.8097 4.74391 28.6799 4.7127 27.2365C4.7127 27.0168 4.7127 26.7658 4.74391 26.5462C4.9936 24.5378 6.52288 22.8434 8.52032 22.3727C9.14452 22.2158 9.76872 22.1845 10.3617 22.2786C12.2655 22.5297 14.1381 21.5568 14.9496 19.8624C15.5426 18.6072 16.4789 17.5089 17.7273 16.9127C19.1004 16.2537 20.661 16.1597 22.0967 16.6617C23.5947 17.1951 24.7183 18.3247 25.4049 19.7368C26.1227 21.1176 26.466 22.0903 27.9954 22.2786C28.6195 22.3727 30.3673 22.3413 31.0228 22.3099C32.3024 22.3099 33.582 22.7493 34.4871 23.6593C35.08 24.2868 35.5169 25.0713 35.7042 25.9499C35.9851 27.362 35.6418 28.7741 34.7991 29.841C34.2061 30.5941 33.3946 31.1589 32.4895 31.4099C32.0526 31.5355 31.6157 31.5668 31.1787 31.5668C30.9291 31.5668 30.5858 31.5668 30.1801 31.5668C28.9317 31.5668 26.2788 31.5668 24.2813 31.5668C22.9082 31.5668 21.8158 30.4686 21.8158 29.0878V24.4437V19.8937C21.8158 19.5172 21.5037 19.2034 21.1292 19.2034H20.1616C18.2578 19.2347 16.7285 21.3686 16.7285 23.6278C16.7285 25.8872 16.7285 31.8807 16.7285 31.8807C16.7285 34.3282 18.6947 36.3051 21.1292 36.3051C21.1292 36.3051 31.9591 36.2737 32.115 36.2737C34.6118 36.0227 36.9214 34.7361 38.4819 32.7593C40.0424 30.8451 40.7602 28.3347 40.4482 25.7617Z" fill="#AFB1B3"/>
+</g>
+<defs>
+<clipPath id="clip0_4116_5238">
+<rect width="52" height="36.4" fill="white"/>
+</clipPath>
+</defs>
+</svg>

From b2744057a0008e543511f1e5dac421b1791860f8 Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Tue, 2 Apr 2024 22:56:48 +0000
Subject: [PATCH 3/3] Bump org.jetbrains.qodana from 2023.3.1 to 2023.3.2

Bumps org.jetbrains.qodana from 2023.3.1 to 2023.3.2.

---
updated-dependencies:
- dependency-name: org.jetbrains.qodana
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
---
 gradle/libs.versions.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 20c8749..edfed2c 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -6,7 +6,7 @@ annotations = "24.1.0"
 kotlin = "1.9.23"
 changelog = "2.2.0"
 gradleIntelliJPlugin = "1.17.2"
-qodana = "2023.3.1"
+qodana = "2023.3.2"
 kover = "0.7.6"
 
 [libraries]