Debugging v0.2 features from j3270

LICENSE

@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <https://unlicense.org>

build.gradle

@@ -42,6 +42,13 @@ android {
 if (findProject(':lib3270j') != null) {
     project(':lib3270j') {
         apply plugin: 'java-library'
+        dependencies {
+            testImplementation 'org.junit.jupiter:junit-jupiter:5.10.2'
+            testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+        }
+        test {
+            useJUnitPlatform()
+        }
         java {
             sourceCompatibility = JavaVersion.VERSION_11
             targetCompatibility = JavaVersion.VERSION_11

src/main/java/org/pubvm/a3270/MainActivity.kt

@@ -36,6 +36,35 @@ import org.pubvm.a3270.ui.UntrustedCertificateDialog
 
 class MainActivity : ComponentActivity() {
 
+    companion object {
+        init {
+            val rootLogger = java.util.logging.Logger.getLogger("")
+            rootLogger.level = java.util.logging.Level.ALL
+            for (h in rootLogger.handlers) {
+                rootLogger.removeHandler(h)
+            }
+            rootLogger.addHandler(object : java.util.logging.Handler() {
+                override fun publish(record: java.util.logging.LogRecord?) {
+                    if (record == null) return
+                    val msg = record.message ?: ""
+                    val tag = "a3270-" + (record.loggerName?.substringAfterLast('.') ?: "lib3270j")
+                    when {
+                        record.level.intValue() >= java.util.logging.Level.SEVERE.intValue() ->
+                            android.util.Log.e(tag, msg, record.thrown)
+                        record.level.intValue() >= java.util.logging.Level.WARNING.intValue() ->
+                            android.util.Log.w(tag, msg, record.thrown)
+                        record.level.intValue() >= java.util.logging.Level.INFO.intValue() ->
+                            android.util.Log.i(tag, msg, record.thrown)
+                        else ->
+                            android.util.Log.d(tag, msg, record.thrown)
+                    }
+                }
+                override fun flush() {}
+                override fun close() {}
+            })
+        }
+    }
+
     private val viewModel: TerminalViewModel by viewModels()
     private val isShiftPressedState = mutableStateOf(false)
 
@@ -221,6 +250,7 @@ fun MainScreen(
                 cursorAddr = cursorAddr,
                 screenVersion = screenVersion,
                 programSymbolManager = viewModel.getClient()?.programSymbolManager,
+                graphicsPlane = viewModel.getClient()?.graphicsPlane,
                 maskHiddenFields = maskHiddenInput,
                 blinkCursor = cursorBlink,
                 onTapAddress = { addr ->

src/main/java/org/pubvm/a3270/TerminalViewModel.kt

@@ -221,10 +221,14 @@ class TerminalViewModel(application: Application) : AndroidViewModel(application
     }
 
     fun resolveUntrustedCert(accept: Boolean) {
-        val prompt = _untrustedCertPrompt.value
+        try {
-        if (prompt != null) {
+            val prompt = _untrustedCertPrompt.value
-            prompt.deferred.complete(accept)
+            if (prompt != null) {
-            _untrustedCertPrompt.value = null
+                prompt.deferred.complete(accept)
+                _untrustedCertPrompt.value = null
+            }
+        } catch (t: Throwable) {
+            log.warning("Error resolving untrusted cert: ${t.message}")
         }
     }
 
@@ -251,7 +255,6 @@ class TerminalViewModel(application: Application) : AndroidViewModel(application
         tlsVerifyCert: Boolean = true,
         graphicsModeStr: String = "BOTH"
     ) {
-        if (_connectionState.value.isConnected()) return
         currentHost = host
         activeHostType = hostType
         lastScreenContentHash = 0
@@ -261,6 +264,15 @@ class TerminalViewModel(application: Application) : AndroidViewModel(application
 
         viewModelScope.launch(Dispatchers.IO) {
             try {
+                // Always disconnect any existing client before establishing a new connection
+                if (client != null || _connectionState.value.isConnected()) {
+                    try {
+                        client?.disconnect()
+                    } catch (_: Exception) {}
+                    client = null
+                    _connectionState.value = ConnectionState.NOT_CONNECTED
+                }
+
                 val model = when (modelNum) {
                     3 -> TerminalModel.IBM_3279_3
                     4 -> TerminalModel.IBM_3279_4
@@ -303,8 +315,14 @@ class TerminalViewModel(application: Application) : AndroidViewModel(application
                         exception = exception,
                         deferred = deferred
                     )
-                    val accepted = kotlinx.coroutines.runBlocking { deferred.await() }
+                    val accepted = try {
-                    _untrustedCertPrompt.value = null
+                        kotlinx.coroutines.runBlocking { deferred.await() }
+                    } catch (t: Throwable) {
+                        log.warning("Certificate verifier prompt interrupted or failed: ${t.message}")
+                        false
+                    } finally {
+                        _untrustedCertPrompt.value = null
+                    }
                     accepted
                 }
 
@@ -379,10 +397,10 @@ class TerminalViewModel(application: Application) : AndroidViewModel(application
                 _screenBuffer.value = newClient.screenBuffer
 
                 newClient.connect()
-            } catch (e: Exception) {
+            } catch (e: Throwable) {
                 log.severe("Failed to connect: ${e.message}")
                 _connectionState.value = ConnectionState.NOT_CONNECTED
-                _oiaText.value = "Failed: ${e.localizedMessage ?: e.message}"
+                _oiaText.value = "Failed: ${e.localizedMessage ?: e.message ?: "Connection error"}"
             }
         }
     }

src/main/java/org/pubvm/a3270/storage/HostStorage.kt

@@ -69,7 +69,13 @@ object HostStorage {
             val jsonArray = JSONArray(jsonStr)
             for (i in 0 until jsonArray.length()) {
                 val obj = jsonArray.getJSONObject(i)
-                list.add(SavedHost.fromJson(obj))
+                val saved = SavedHost.fromJson(obj)
+                val effective = if (saved.graphicsMode == "PROGRAMMED_SYMBOLS") {
+                    saved.copy(graphicsMode = "BOTH")
+                } else {
+                    saved
+                }
+                list.add(effective)
             }
         } catch (e: Exception) {
             e.printStackTrace()

src/main/java/org/pubvm/a3270/ui/ConnectDialog.kt

@@ -298,9 +298,9 @@ fun ConnectDialog(
                         ) {
                             Text("Graphics:", fontSize = 11.sp, color = Color.Gray)
                             listOf(
-                                "BOTH" to "Both",
-                                "VECTOR_GRAPHICS" to "Vector",
                                 "PROGRAMMED_SYMBOLS" to "Symbols",
+                                "VECTOR_GRAPHICS" to "Vector",
+                                "BOTH" to "Both",
                                 "NONE" to "None"
                             ).forEach { (modeKey, modeLabel) ->
                                 FilterChip(

src/main/java/org/pubvm/a3270/ui/TerminalView.kt

@@ -59,6 +59,7 @@ fun TerminalView(
     cursorAddr: Int,
     screenVersion: Long,
     programSymbolManager: org.lib3270j.graphics.ProgramSymbolManager? = null,
+    graphicsPlane: org.lib3270j.graphics.GraphicsPlane? = null,
     maskHiddenFields: Boolean = true,
     blinkCursor: Boolean = true,
     onTapAddress: (Int) -> Unit,
@@ -304,28 +305,8 @@ fun TerminalView(
                         if (slot != null) {
                             val symWidth = slot.width
                             val symHeight = slot.height
-                            val pixelData = slot.pixelData
+                            val rgbArray = slot.getRgbPixels(fgColor.toArgb(), bgColor.toArgb())
-                            if (pixelData != null && symWidth > 0 && symHeight > 0) {
+                            if (rgbArray != null && symWidth > 0 && symHeight > 0) {
-                                val fgArgb = fgColor.toArgb()
-                                val bgArgb = bgColor.toArgb()
-                                val isTriple = slot.isTriplePlane
-                                val rgbArray = IntArray(symWidth * symHeight)
-                                for (py in 0 until symHeight) {
-                                    for (px in 0 until symWidth) {
-                                        val pIdx = py * symWidth + px
-                                        val v = if (pIdx < pixelData.size) (pixelData[pIdx].toInt() and 0xFF) else 0
-                                        if (v == 0) {
-                                            rgbArray[pIdx] = bgArgb
-                                        } else if (!isTriple) {
-                                            rgbArray[pIdx] = fgArgb
-                                        } else {
-                                            val redVal = if ((v and 0x01) != 0) 255 else 0
-                                            val greenVal = if ((v and 0x02) != 0) 255 else 0
-                                            val blueVal = if ((v and 0x04) != 0) 255 else 0
-                                            rgbArray[pIdx] = (0xFF shl 24) or (redVal shl 16) or (greenVal shl 8) or blueVal
-                                        }
-                                    }
-                                }
                                 val bmp = android.graphics.Bitmap.createBitmap(rgbArray, symWidth, symHeight, android.graphics.Bitmap.Config.ARGB_8888)
                                 drawContext.canvas.nativeCanvas.drawBitmap(
                                     bmp,
@@ -362,6 +343,25 @@ fun TerminalView(
                     }
                 }
             }
+
+            // Draw Vector Graphics Plane overlay if present
+            if (graphicsPlane != null && graphicsPlane.hasContent()) {
+                val gridW = (cols * cellWidth).toInt()
+                val gridH = (rows * cellHeight).toInt()
+                if (gridW > 0 && gridH > 0) {
+                    graphicsPlane.resize(gridW, gridH)
+                    val rgb = graphicsPlane.rgbBuffer
+                    if (rgb != null) {
+                        val bmp = android.graphics.Bitmap.createBitmap(rgb, gridW, gridH, android.graphics.Bitmap.Config.ARGB_8888)
+                        drawContext.canvas.nativeCanvas.drawBitmap(
+                            bmp,
+                            null,
+                            android.graphics.RectF(0f, 0f, gridW.toFloat(), gridH.toFloat()),
+                            null
+                        )
+                    }
+                }
+            }
         }
 
         // Context Menu Popup

src/main/java/org/pubvm/a3270/ui/UntrustedCertificateDialog.kt

@@ -42,30 +42,54 @@ fun UntrustedCertificateDialog(
             append("\n\n")
         }
         if (cert != null) {
-            append("Subject:\n  ")
+            try {
-            append(cert.subjectX500Principal.name)
+                append("Subject:\n  ")
-            append("\n\n")
+                append(cert.subjectX500Principal?.name ?: cert.subjectDN?.name ?: "Unknown")
+                append("\n\n")
+            } catch (t: Throwable) {
+                append("Subject: ${t.message ?: "Unavailable"}\n\n")
+            }
 
-            append("Issuer:\n  ")
+            try {
-            append(cert.issuerX500Principal.name)
+                append("Issuer:\n  ")
-            append("\n\n")
+                append(cert.issuerX500Principal?.name ?: cert.issuerDN?.name ?: "Unknown")
+                append("\n\n")
+            } catch (t: Throwable) {
+                append("Issuer: ${t.message ?: "Unavailable"}\n\n")
+            }
 
-            append("Validity:\n  From: ")
+            try {
-            append(sdf.format(cert.notBefore))
+                append("Validity:\n  From: ")
-            append("\n  To:   ")
+                append(cert.notBefore?.let { sdf.format(it) } ?: "Unknown")
-            append(sdf.format(cert.notAfter))
+                append("\n  To:   ")
-            append("\n\n")
+                append(cert.notAfter?.let { sdf.format(it) } ?: "Unknown")
+                append("\n\n")
+            } catch (t: Throwable) {
+                append("Validity: ${t.message ?: "Unavailable"}\n\n")
+            }
 
-            append("Serial Number:\n  ")
+            try {
-            append(cert.serialNumber.toString(16).uppercase(Locale.US))
+                append("Serial Number:\n  ")
-            append("\n\n")
+                append(cert.serialNumber?.toString(16)?.uppercase(Locale.US) ?: "Unknown")
+                append("\n\n")
+            } catch (t: Throwable) {
+                append("Serial Number: ${t.message ?: "Unavailable"}\n\n")
+            }
 
-            append("SHA-256 Fingerprint:\n  ")
+            try {
-            append(computeFingerprint(cert, "SHA-256"))
+                append("SHA-256 Fingerprint:\n  ")
-            append("\n\n")
+                append(computeFingerprint(cert, "SHA-256"))
+                append("\n\n")
+            } catch (t: Throwable) {
+                append("SHA-256 Fingerprint: ${t.message ?: "Unavailable"}\n\n")
+            }
 
-            append("SHA-1 Fingerprint:\n  ")
+            try {
-            append(computeFingerprint(cert, "SHA-1"))
+                append("SHA-1 Fingerprint:\n  ")
+                append(computeFingerprint(cert, "SHA-1"))
+            } catch (t: Throwable) {
+                append("SHA-1 Fingerprint: ${t.message ?: "Unavailable"}")
+            }
         } else {
             append("No peer certificate information available.")
         }
@@ -161,8 +185,8 @@ private fun computeFingerprint(cert: X509Certificate, algorithm: String): String
     return try {
         val md = MessageDigest.getInstance(algorithm)
         val digest = md.digest(cert.encoded)
-        digest.joinToString(":") { "%02X".format(it) }
+        digest.joinToString(":") { "%02X".format(it.toInt() and 0xFF) }
-    } catch (e: Exception) {
+    } catch (e: Throwable) {
         "Unable to compute fingerprint: ${e.message}"
     }
 }