Repo created

backend/demo/build.gradle.kts

@@ -0,0 +1,16 @@
+@Suppress("DSL_SCOPE_VIOLATION")
+plugins {
+    id(ThunderbirdPlugins.Library.jvm)
+    alias(libs.plugins.ksp)
+    alias(libs.plugins.android.lint)
+}
+
+dependencies {
+    api(projects.backend.api)
+
+    implementation(libs.kotlinx.coroutines.core)
+    implementation(libs.moshi)
+    ksp(libs.moshi.kotlin.codegen)
+
+    testImplementation(projects.mail.testing)
+}

backend/demo/src/main/java/app/k9mail/backend/demo/DemoBackend.kt

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+package app.k9mail.backend.demo
+
+import com.fsck.k9.backend.api.Backend
+import com.fsck.k9.backend.api.BackendFolder.MoreMessages
+import com.fsck.k9.backend.api.BackendPusher
+import com.fsck.k9.backend.api.BackendPusherCallback
+import com.fsck.k9.backend.api.BackendStorage
+import com.fsck.k9.backend.api.FolderInfo
+import com.fsck.k9.backend.api.SyncConfig
+import com.fsck.k9.backend.api.SyncListener
+import com.fsck.k9.backend.api.updateFolders
+import com.fsck.k9.mail.BodyFactory
+import com.fsck.k9.mail.Flag
+import com.fsck.k9.mail.FolderType
+import com.fsck.k9.mail.Message
+import com.fsck.k9.mail.MessageDownloadState
+import com.fsck.k9.mail.Part
+import com.fsck.k9.mail.internet.MimeMessage
+import com.squareup.moshi.Moshi
+import com.squareup.moshi.adapter
+import java.io.ByteArrayInputStream
+import java.io.ByteArrayOutputStream
+import java.io.InputStream
+import java.util.UUID
+import okio.buffer
+import okio.source
+
+class DemoBackend(private val backendStorage: BackendStorage) : Backend {
+    private val messageStoreInfo by lazy { readMessageStoreInfo() }
+
+    override val supportsFlags: Boolean = true
+    override val supportsExpunge: Boolean = false
+    override val supportsMove: Boolean = true
+    override val supportsCopy: Boolean = true
+    override val supportsUpload: Boolean = true
+    override val supportsTrashFolder: Boolean = true
+    override val supportsSearchByDate: Boolean = false
+    override val isPushCapable: Boolean = false
+
+    override fun refreshFolderList() {
+        val localFolderServerIds = backendStorage.getFolderServerIds().toSet()
+
+        backendStorage.updateFolders {
+            val remoteFolderServerIds = messageStoreInfo.keys
+            val foldersServerIdsToCreate = remoteFolderServerIds - localFolderServerIds
+            val foldersToCreate = foldersServerIdsToCreate.mapNotNull { folderServerId ->
+                messageStoreInfo[folderServerId]?.let { folderData ->
+                    FolderInfo(folderServerId, folderData.name, folderData.type)
+                }
+            }
+            createFolders(foldersToCreate)
+
+            val folderServerIdsToRemove = (localFolderServerIds - remoteFolderServerIds).toList()
+            deleteFolders(folderServerIdsToRemove)
+        }
+    }
+
+    override fun sync(folderServerId: String, syncConfig: SyncConfig, listener: SyncListener) {
+        listener.syncStarted(folderServerId)
+
+        val folderData = messageStoreInfo[folderServerId]
+        if (folderData == null) {
+            listener.syncFailed(folderServerId, "Folder $folderServerId doesn't exist", null)
+            return
+        }
+
+        val backendFolder = backendStorage.getFolder(folderServerId)
+
+        val localMessageServerIds = backendFolder.getMessageServerIds()
+        if (localMessageServerIds.isNotEmpty()) {
+            listener.syncFinished(folderServerId)
+            return
+        }
+
+        for (messageServerId in folderData.messageServerIds) {
+            val message = loadMessage(folderServerId, messageServerId)
+            backendFolder.saveMessage(message, MessageDownloadState.FULL)
+            listener.syncNewMessage(folderServerId, messageServerId, isOldMessage = false)
+        }
+
+        backendFolder.setMoreMessages(MoreMessages.FALSE)
+
+        listener.syncFinished(folderServerId)
+    }
+
+    override fun downloadMessage(syncConfig: SyncConfig, folderServerId: String, messageServerId: String) {
+        throw UnsupportedOperationException("not implemented")
+    }
+
+    override fun downloadMessageStructure(folderServerId: String, messageServerId: String) {
+        throw UnsupportedOperationException("not implemented")
+    }
+
+    override fun downloadCompleteMessage(folderServerId: String, messageServerId: String) {
+        throw UnsupportedOperationException("not implemented")
+    }
+
+    override fun setFlag(folderServerId: String, messageServerIds: List<String>, flag: Flag, newState: Boolean) = Unit
+
+    override fun markAllAsRead(folderServerId: String) = Unit
+
+    override fun expunge(folderServerId: String) {
+        throw UnsupportedOperationException("not implemented")
+    }
+
+    override fun expungeMessages(folderServerId: String, messageServerIds: List<String>) {
+        throw UnsupportedOperationException("not implemented")
+    }
+
+    override fun deleteMessages(folderServerId: String, messageServerIds: List<String>) = Unit
+
+    override fun deleteAllMessages(folderServerId: String) = Unit
+
+    override fun moveMessages(
+        sourceFolderServerId: String,
+        targetFolderServerId: String,
+        messageServerIds: List<String>
+    ): Map<String, String> {
+        // We do just enough to simulate a successful operation on the server.
+        return messageServerIds.associateWith { createNewServerId() }
+    }
+
+    override fun moveMessagesAndMarkAsRead(
+        sourceFolderServerId: String,
+        targetFolderServerId: String,
+        messageServerIds: List<String>
+    ): Map<String, String> {
+        // We do just enough to simulate a successful operation on the server.
+        return messageServerIds.associateWith { createNewServerId() }
+    }
+
+    override fun copyMessages(
+        sourceFolderServerId: String,
+        targetFolderServerId: String,
+        messageServerIds: List<String>
+    ): Map<String, String> {
+        // We do just enough to simulate a successful operation on the server.
+        return messageServerIds.associateWith { createNewServerId() }
+    }
+
+    override fun search(
+        folderServerId: String,
+        query: String?,
+        requiredFlags: Set<Flag>?,
+        forbiddenFlags: Set<Flag>?,
+        performFullTextSearch: Boolean
+    ): List<String> {
+        throw UnsupportedOperationException("not implemented")
+    }
+
+    override fun fetchPart(folderServerId: String, messageServerId: String, part: Part, bodyFactory: BodyFactory) {
+        throw UnsupportedOperationException("not implemented")
+    }
+
+    override fun findByMessageId(folderServerId: String, messageId: String): String? {
+        throw UnsupportedOperationException("not implemented")
+    }
+
+    override fun uploadMessage(folderServerId: String, message: Message): String {
+        return createNewServerId()
+    }
+
+    override fun checkIncomingServerSettings() = Unit
+
+    override fun checkOutgoingServerSettings() = Unit
+
+    override fun sendMessage(message: Message) {
+        val inboxServerId = messageStoreInfo.filterValues { it.type == FolderType.INBOX }.keys.first()
+        val backendFolder = backendStorage.getFolder(inboxServerId)
+
+        val newMessage = message.copy(uid = createNewServerId())
+        backendFolder.saveMessage(newMessage, MessageDownloadState.FULL)
+    }
+
+    override fun createPusher(callback: BackendPusherCallback): BackendPusher {
+        throw UnsupportedOperationException("not implemented")
+    }
+
+    private fun createNewServerId() = UUID.randomUUID().toString()
+
+    private fun Message.copy(uid: String): MimeMessage {
+        val outputStream = ByteArrayOutputStream()
+        writeTo(outputStream)
+        val inputStream = ByteArrayInputStream(outputStream.toByteArray())
+        return MimeMessage.parseMimeMessage(inputStream, false).apply {
+            this.uid = uid
+        }
+    }
+
+    @OptIn(ExperimentalStdlibApi::class)
+    private fun readMessageStoreInfo(): MessageStoreInfo {
+        return getResourceAsStream("/contents.json").source().buffer().use { bufferedSource ->
+            val moshi = Moshi.Builder().build()
+            val adapter = moshi.adapter<MessageStoreInfo>()
+            adapter.fromJson(bufferedSource)
+        } ?: error("Couldn't read message store info")
+    }
+
+    private fun loadMessage(folderServerId: String, messageServerId: String): Message {
+        return getResourceAsStream("/$folderServerId/$messageServerId.eml").use { inputStream ->
+            MimeMessage.parseMimeMessage(inputStream, false).apply {
+                uid = messageServerId
+            }
+        }
+    }
+
+    private fun getResourceAsStream(name: String): InputStream {
+        return DemoBackend::class.java.getResourceAsStream(name) ?: error("Resource '$name' not found")
+    }
+}

backend/demo/src/main/java/app/k9mail/backend/demo/MessageStoreInfo.kt

@@ -0,0 +1,13 @@
+package app.k9mail.backend.demo
+
+import com.fsck.k9.mail.FolderType
+import com.squareup.moshi.JsonClass
+
+typealias MessageStoreInfo = Map<String, FolderData>
+
+@JsonClass(generateAdapter = true)
+data class FolderData(
+    val name: String,
+    val type: FolderType,
+    val messageServerIds: List<String>
+)

backend/demo/src/main/resources/contents.json

@@ -0,0 +1,60 @@
+{
+  "inbox": {
+    "name": "Inbox",
+    "type": "INBOX",
+    "messageServerIds": [
+      "intro",
+      "many_recipients",
+      "thread_1",
+      "thread_2",
+      "inline_image_data_uri",
+      "inline_image_attachment"
+    ]
+  },
+  "trash": {
+    "name": "Trash",
+    "type": "TRASH",
+    "messageServerIds": []
+  },
+  "drafts": {
+    "name": "Drafts",
+    "type": "DRAFTS",
+    "messageServerIds": []
+  },
+  "sent": {
+    "name": "Sent",
+    "type": "SENT",
+    "messageServerIds": []
+  },
+  "archive": {
+    "name": "Archive",
+    "type": "ARCHIVE",
+    "messageServerIds": []
+  },
+  "spam": {
+    "name": "Spam",
+    "type": "SPAM",
+    "messageServerIds": []
+  },
+  "turing": {
+    "name": "Turing Awards",
+    "type": "REGULAR",
+    "messageServerIds": [
+      "turing_award_1966",
+      "turing_award_1967",
+      "turing_award_1968",
+      "turing_award_1970",
+      "turing_award_1971",
+      "turing_award_1972",
+      "turing_award_1975",
+      "turing_award_1977",
+      "turing_award_1978",
+      "turing_award_1979",
+      "turing_award_1981",
+      "turing_award_1983",
+      "turing_award_1987",
+      "turing_award_1991",
+      "turing_award_1996"
+    ]
+  }
+}

backend/demo/src/main/resources/inbox/inline_image_attachment.eml

@@ -0,0 +1,248 @@
+MIME-Version: 1.0
+From: "Test data" <data@k9mail.example>
+Date: Tue, 14 Feb 2023 15:00:00 +0100
+Message-ID: <inbox-6@k9mail.example>
+Subject: Inline image attachment
+To: User <user@k9mail.example>
+Content-Type: multipart/related; boundary=BOUNDARY
+
+--BOUNDARY
+Content-Type: text/html; charset=UTF-8
+
+<html>
+<body>
+<p>Inline image using a cid: URI to reference an attached image:</p>
+
+<img src="cid:part1@k9mail.example">
+</body>
+</html>
+--BOUNDARY
+Content-Type: image/png; name="k9mail.png"
+Content-Transfer-Encoding: base64
+Content-ID: <part1@k9mail.example>
+Content-Disposition: inline; filename="k9mail.png"
+
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+--BOUNDARY--

backend/demo/src/main/resources/inbox/intro.eml

@@ -0,0 +1,9 @@
+MIME-Version: 1.0
+From: "cketti" <cketti@k9mail.example>
+Date: Thu, 23 Sep 2021 23:42:00 +0200
+Message-ID: <hello-1-2-3@k9mail.example>
+Subject: Welcome to K-9 Mail
+To: User <user@k9mail.example>
+Content-Type: text/plain; charset=UTF-8
+
+Congratulations, you have managed to set up K-9 Mail's demo account. Have fun exploring the app.

backend/demo/src/main/resources/inbox/many_recipients.eml

@@ -0,0 +1,42 @@
+MIME-Version: 1.0
+From: "Alice" <from1@k9mail.example>, "Bob" <from2@k9mail.example>
+Sender: "Bernd" <sender@k9mail.example>
+Reply-To: <reply-to@k9mail.example>
+Date: Mon, 23 Jan 2023 12:00:00 +0100
+Message-ID: <inbox-2@k9mail.example>
+Subject: Message details demo
+To: "User 1" <to1@k9mail.example>,
+ "User 2" <to2@k9mail.example>,
+ "User 3" <to3@k9mail.example>,
+ "User 4" <to4@k9mail.example>,
+ "User 5" <to5@k9mail.example>,
+ "User 6" <to6@k9mail.example>,
+ "User 7" <to7@k9mail.example>,
+ "User 8" <to8@k9mail.example>,
+ "User 9" <to9@k9mail.example>,
+ "User 10" <to10@k9mail.example>,
+ "User 11" <to11@k9mail.example>,
+ "User 12" <to12@k9mail.example>,
+ "User 13" <to13@k9mail.example>,
+ "User 14" <to14@k9mail.example>,
+ "User 15" <to15@k9mail.example>,
+ "User 16" <to16@k9mail.example>,
+ "User 17" <to17@k9mail.example>,
+ "User 18" <to18@k10mail.example>,
+ "User 19" <to19@k11mail.example>,
+ "User 20" <to20@k12mail.example>
+Cc: "Copy 1" <cc1@k9mail.example>,
+ "Copy 2" <cc2@k9mail.example>,
+ "Copy 3" <cc3@k9mail.example>
+Bcc: "Blind 1" <bcc1@k9mail.example>,
+ "Blind 2" <bcc2@k9mail.example>,
+ "Blind 3" <bcc3@k9mail.example>
+Content-Type: text/plain; charset=UTF-8
+
+This message contains…
+- multiple addresses in the From: header
+- a Sender: header
+- a Reply-To: header
+- multiple addresses in the To: header
+- multiple addresses in the Cc: header
+- multiple addresses in the Bcc: header

backend/demo/src/main/resources/inbox/thread_1.eml

@@ -0,0 +1,9 @@
+MIME-Version: 1.0
+From: Alice <alice@k9mail.example>
+Date: Fri, 10 Feb 2023 10:00:00 +0100
+Message-ID: <thread-1@k9mail.example>
+Subject: Thread
+To: Bob <bob@k9mail.example>
+Content-Type: text/plain; charset=UTF-8
+
+This is the first message in this thread.

backend/demo/src/main/resources/inbox/thread_2.eml

@@ -0,0 +1,11 @@
+MIME-Version: 1.0
+From: Bob <bob@k9mail.example>
+Date: Fri, 10 Feb 2023 10:05:00 +0100
+Message-ID: <thread-2@k9mail.example>
+Subject: Re: Thread
+To: Alice <alice@k9mail.example>
+In-Reply-To: <thread-1@k9mail.example>
+References: <thread-2@k9mail.example>
+Content-Type: text/plain; charset=UTF-8
+
+This is the second message in this thread.

backend/demo/src/main/resources/turing/turing_award_1966.eml

@@ -0,0 +1,84 @@
+MIME-Version: 1.0
+From: "Alan J. Perlis" <alan.perlis@example.com>
+Date: Sat, 01 Jan 1966 12:00:00 -0400
+Message-ID: <turing1966@cketti.de>
+Subject: The Synthesis of Algorithmic Systems
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=047d7b450b100959e604d85a5320
+
+--047d7b450b100959e604d85a5320
+Content-Type: text/plain; charset=UTF-8
+
+Both knowledge and wisdom extend man's reach. Knowledge led to computers, 
+wisdom to chopsticks. Unfortunately our association is overinvolved with 
+the former. The latter will have to wait for a more sublime day. 
+On what does and will the fame of Turing rest? That he proved a theorem 
+showing that for a general computing device--later dubbed a "Turing 
+machine"--there existed functions which it could not compute? I doubt it. 
+More likely it rests on the model he invented and employed: his formal 
+mechanism. 
+This model has captured the imagination and mobilized the thoughts of a 
+generation of scientists. It has provided a basis for arguments leading to 
+theories. His model has proved so useful that its generated activity has 
+been distributed not only in mathematics, but through several technologies 
+as well. The arguments that have been employed are not always formal and 
+the consequent creations not all abstract. 
+Indeed a most fruitful consequence of the Turing machine has been with the 
+creation, study and computation of functions which are computable, i.e., in 
+computer programming. This is not surprising since computers can compute so 
+much more than we yet know how to specify. 
+I am sure that all will agree that this model has been enormously valuable. 
+History will forgive me for not devoting any attention in this lecture to 
+the effect which Turing had on the development of the general-purpose 
+digital computer, which has further accelerated our involvement with the 
+theory and practice of computation. 
+Since the appearance of Turing's model there have, of course, been others 
+which have concerned and benefited us in computing. I think, however, that 
+only one has had an effect as great as Turing's: the formal mechanism 
+called ALGOL Many will immediately disagree, pointing out that too few of 
+us have understood it or used it. 
+While such has, unhappily, been the case, it is not the point. The impulse 
+given by ALGOL to the development of research in computer science is 
+relevant while the number of adherents is not. ALGOL, too, has mobilized 
+our thoughts and has provided us with a basis for our arguments. 
+
+--047d7b450b100959e604d85a5320
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>Both knowledge and wisdom extend man&#39;s reach. Kno=
+wledge led to computers, wisdom to chopsticks. Unfortunately our associatio=
+n is overinvolved with the former. The latter will have to wait for a more =
+sublime day.=C2=A0</div>
+<div>On what does and will the fame of Turing rest? That he proved a theore=
+m showing that for a general computing device--later dubbed a &quot;Turing =
+machine&quot;--there existed functions which it could not compute? I doubt =
+it. More likely it rests on the model he invented and employed: his formal =
+mechanism.=C2=A0</div>
+<div>This model has captured the imagination and mobilized the thoughts of =
+a generation of scientists. It has provided a basis for arguments leading t=
+o theories. His model has proved so useful that its generated activity has =
+been distributed not only in mathematics, but through several technologies =
+as well. The arguments that have been employed are not always formal and th=
+e consequent creations not all abstract.=C2=A0</div>
+<div>Indeed a most fruitful consequence of the Turing machine has been with=
+ the creation, study and computation of functions which are computable, i.e=
+., in computer programming. This is not surprising since computers can comp=
+ute so much more than we yet know how to specify.=C2=A0</div>
+<div>I am sure that all will agree that this model has been enormously valu=
+able. History will forgive me for not devoting any attention in this lectur=
+e to the effect which Turing had on the development of the general-purpose =
+digital computer, which has further accelerated our involvement with the th=
+eory and practice of computation.=C2=A0</div>
+<div>Since the appearance of Turing&#39;s model there have, of course, been=
+ others which have concerned and benefited us in computing. I think, howeve=
+r, that only one has had an effect as great as Turing&#39;s: the formal mec=
+hanism called ALGOL Many will immediately disagree, pointing out that too f=
+ew of us have understood it or used it.=C2=A0</div>
+<div>While such has, unhappily, been the case, it is not the point. The imp=
+ulse given by ALGOL to the development of research in computer science is r=
+elevant while the number of adherents is not. ALGOL, too, has mobilized our=
+ thoughts and has provided us with a basis for our arguments.=C2=A0</div>
+</div>
+
+--047d7b450b100959e604d85a5320--

backend/demo/src/main/resources/turing/turing_award_1967.eml

@@ -0,0 +1,35 @@
+MIME-Version: 1.0
+From: "Maurice V. Wilkes" <maurice.wilkes@example.com>
+Date: Wed, 30 Aug 1967 12:00:00 -0400
+Message-ID: <turing1967@cketti.de>
+Subject: Computers Then and Now
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=047d7b5d9bdd0d571a04d85aec30
+
+--047d7b5d9bdd0d571a04d85aec30
+Content-Type: text/plain; charset=UTF-8
+
+I do not imagine that many of the Turing lecturers who will follow me will 
+be people who were acquainted with Alan Turing. The work on computable 
+numbers, for which he is famous, was published in 1936 before digital 
+computers existed. Later he became one of the first of a distinguished 
+succession of able mathematicians who have made contributions to the 
+computer field. He was a colorful figure in the early days of digital 
+computer development in England, and I would find it difficult to speak of 
+that period without making some references to him.
+
+--047d7b5d9bdd0d571a04d85aec30
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>I do not imagine that many of the Turing lecturers wh=
+o will follow me will be people who were acquainted with Alan Turing. The w=
+ork on computable numbers, for which he is famous, was published in 1936 be=
+fore digital computers existed. Later he became one of the first of a disti=
+nguished succession of able mathematicians who have made contributions to t=
+he computer field. He was a colorful figure in the early days of digital co=
+mputer development in England, and I would find it difficult to speak of th=
+at period without making some references to him.</div>
+</div>
+
+--047d7b5d9bdd0d571a04d85aec30--

backend/demo/src/main/resources/turing/turing_award_1968.eml

@@ -0,0 +1,40 @@
+MIME-Version: 1.0
+From: Richard Hamming <richard.hamming@example.com>
+Date: Tue, 27 Aug 1968 12:00:00 -0400
+Message-ID: <turing1968@cketti.de>
+Subject: One Man's View of Computer Science
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=089e01227b30f6f60004d85af2ae
+
+--089e01227b30f6f60004d85af2ae
+Content-Type: text/plain; charset=UTF-8
+
+Let me begin with a few personal words. When one is notified that he has 
+been elected the ACM Turing lecturer for the year, he is at first 
+surprised--especially is the nonacademic person surprised by an ACM award. 
+After a little while the surprise is replaced by a feeling of pleasure. 
+Still later comes a feeling of "Why me?" With all that has been done and is 
+being done in computing, why single out me and my work? Well, I suppose 
+that it has to happen to someone each year, and this 
+time I am the lucky person. Anyway, let me thank you for the honor you have 
+given to me and by inference to the Bell Telephone Laboratories where I 
+work and which has made possible so much of what I have done.
+
+--089e01227b30f6f60004d85af2ae
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>Let me begin with a few personal words. When one is n=
+otified that he has been elected the ACM Turing lecturer for the year, he i=
+s at first surprised--especially is the nonacademic person surprised by an =
+ACM award. After a little while the surprise is replaced by a feeling of pl=
+easure. Still later comes a feeling of &quot;Why me?&quot; With all that ha=
+s been done and is being done in computing, why single out me and my work? =
+Well, I suppose that it has to happen to someone each year, and this=C2=A0<=
+/div>
+<div>time I am the lucky person. Anyway, let me thank you for the honor you=
+ have given to me and by inference to the Bell Telephone Laboratories where=
+ I work and which has made possible so much of what I have done.</div></div=
+>
+
+--089e01227b30f6f60004d85af2ae--

backend/demo/src/main/resources/turing/turing_award_1970.eml

@@ -0,0 +1,35 @@
+MIME-Version: 1.0
+From: "James H. Wilkinson" <james.wilkinson@example.com>
+Date: Tue, 01 Sep 1970 12:00:00 -0400
+Message-ID: <turing1970@cketti.de>
+Subject: Some Comments from a Numerical Analyst
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=047d7b5d9bdd9697d504d85ac65f
+
+--047d7b5d9bdd9697d504d85ac65f
+Content-Type: text/plain; charset=UTF-8
+
+When at last I recovered from the feeling of shocked elation at being 
+invited to give the 1970 Turing Award Lecture, I became aware that I must 
+indeed prepare an appropriate lecture. There appears to be a tradition that 
+a Turing Lecturer should decide for himself what is expected from him, and 
+probably for this reason previous lectures have differed considerably in 
+style and content. However, it was made quite clear that I was to give an 
+after-luncheon speech and that I would not have the benefit of an overhead 
+projector or a blackboard.
+
+--047d7b5d9bdd9697d504d85ac65f
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>When at last I recovered from the feeling of shocked =
+elation at being invited to give the 1970 Turing Award Lecture, I became aw=
+are that I must indeed prepare an appropriate lecture. There appears to be =
+a tradition that a Turing Lecturer should decide for himself what is expect=
+ed from him, and probably for this reason previous lectures have differed c=
+onsiderably in style and content. However, it was made quite clear that I w=
+as to give an after-luncheon speech and that I would not have the benefit o=
+f an overhead projector or a blackboard.</div>
+</div>
+
+--047d7b5d9bdd9697d504d85ac65f--

backend/demo/src/main/resources/turing/turing_award_1971.eml

@@ -0,0 +1,32 @@
+MIME-Version: 1.0
+From: John McCarthy <john.mccarthy@example.com>
+Date: Fri, 01 Jan 1971 12:00:00 -0400
+Message-ID: <turing1971@cketti.de>
+Subject: Generality in Artificial Intelligence
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=089e01030106b6942904d85ad870
+
+--089e01030106b6942904d85ad870
+Content-Type: text/plain; charset=UTF-8
+
+Postscript
+My 1971 Turing Award Lecture was entitled "Generality in Artificial 
+Intelligence." The topic turned out to have been overambitious in that I 
+discovered that I was unable to put my thoughts on the subject in a 
+satisfactory written form at that time. It would have been better to have 
+reviewed previous work rather than attempt something new, but such wasn't 
+my custom at that time.
+
+--089e01030106b6942904d85ad870
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>Postscript</div><div>My 1971 Turing Award Lecture was=
+ entitled &quot;Generality in Artificial Intelligence.&quot; The topic turn=
+ed out to have been overambitious in that I discovered that I was unable to=
+ put my thoughts on the subject in a satisfactory written form at that time=
+. It would have been better to have reviewed previous work rather than atte=
+mpt something new, but such wasn&#39;t my custom at that time.</div>
+</div>
+
+--089e01030106b6942904d85ad870--

backend/demo/src/main/resources/turing/turing_award_1972.eml

@@ -0,0 +1,27 @@
+MIME-Version: 1.0
+From: "Edsger W. Dijkstra" <edsger.dijkstra@example.com>
+Date: Mon, 02 Aug 1972 12:00:00 -0500
+Message-ID: <turing1972@cketti.de>
+Subject: The Humble Programmer
+To: Alan Turing <alan@turing.example>
+Content-Type: text/plain; charset=UTF-8; format=flowed
+
+As a result of a long sequence of coincidences I entered the programming 
+profession officially on the first spring morning of 1952, and as far as 
+I have been able to trace, I was the first Dutchman to do so in my 
+country. In retrospect the most amazing thing is the slowness with which, 
+at least in my part of the world, the programming profession emerged, a 
+slowness which is now hard to believe. But I am grateful for two vivid 
+recollections from that period that establish that slowness beyond any 
+doubt.
+
+After having programmed for some three years, I had a discussion with 
+van Wijngaarden, who was then my boss at the Mathematical Centre in 
+Amsterdam - a discussion for which I shall remain grateful to him 
+as long as I live. The point was that I was supposed to study theoretical 
+physics at the University of Leiden simultaneously, and as I found the 
+two activities harder and harder to combine, I had to make up my 
+mind, either to stop programming and become a real, respectable theoretical 
+physicist, or to carry my study of physics to a formal completion only, 
+with a minimum of effort, and to become..., yes what? A programmer? 
+But was that a respectable profession? After all, what was programming?

backend/demo/src/main/resources/turing/turing_award_1975.eml

@@ -0,0 +1,30 @@
+MIME-Version: 1.0
+From: Allen Newell <allen.newell@example.com>
+Cc: Herbert Simon <herbert.simon@example.com>
+Date: Mon, 20 Oct 1975 12:00:00 -0500
+Message-ID: <turing1975@cketti.de>
+Subject: Computer Science as Empirical Inquiry: Symbols and Search
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=047d7b450b1092035304d85abf33
+
+--047d7b450b1092035304d85abf33
+Content-Type: text/plain; charset=UTF-8
+
+Computer science is the study of the phenomena surrounding computers. The 
+founders of this society understood this very well when they called 
+themselves the Association for Computing Machinery. The machine---not just 
+the hardware, but the programmed, living machine--is the organism we study.
+
+--047d7b450b1092035304d85abf33
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr">Computer science is the study of the phenomena surrounding=
+ computers. The founders of this society understood this very well when the=
+y called themselves the Association for Computing Machinery. The machine---=
+not just the hardware, but the programmed, living machine--is the organism =
+we study.<br>
+
+</div>
+
+--047d7b450b1092035304d85abf33--

backend/demo/src/main/resources/turing/turing_award_1977.eml

@@ -0,0 +1,39 @@
+MIME-Version: 1.0
+From: "John W. Backus" <john.backus@example.com>
+Date: Mon, 17 Oct 1977 12:00:00 -0700
+Message-ID: <turing1977@cketti.de>
+Subject: Can Programming Be Liberated from the von Neumann Style? A Functional
+ Style and Its Algebra of Programs
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=047d7b5d9bdd8a36e804d85ade47
+
+--047d7b5d9bdd8a36e804d85ade47
+Content-Type: text/plain; charset=UTF-8
+
+Conventional programming languages are growing ever more enormous, but not 
+stronger. Inherent defects at the most basic level cause them to be both 
+fat and weak: their primitive word-at-a-time style of programming inherited 
+from their common ancestor--the von Neumann computer, their close coupling 
+of semantics to state transitions, their division of programming into a 
+world of expressions and a world of statements, their inability to 
+effectively use powerful combining forms for building new programs from 
+existing ones, and their lack of useful mathematical properties for 
+reasoning about 
+programs.
+
+--047d7b5d9bdd8a36e804d85ade47
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>Conventional programming languages are growing ever m=
+ore enormous, but not stronger. Inherent defects at the most basic level ca=
+use them to be both fat and weak: their primitive word-at-a-time style of p=
+rogramming inherited from their common ancestor--the von Neumann computer, =
+their close coupling of semantics to state transitions, their division of p=
+rogramming into a world of expressions and a world of statements, their ina=
+bility to effectively use powerful combining forms for building new program=
+s from existing ones, and their lack of useful mathematical properties for =
+reasoning about=C2=A0</div>
+<div>programs.</div></div>
+
+--047d7b5d9bdd8a36e804d85ade47--

backend/demo/src/main/resources/turing/turing_award_1978.eml

@@ -0,0 +1,36 @@
+MIME-Version: 1.0
+From: Robert Floyd <robert.floyd@example.com>
+Date: Mon, 04 Dec 1978 12:00:00 -0500
+Message-ID: <turing1978@cketti.de>
+Subject: The Paradigms of Programming
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=089e0118419206e64304d85af860
+
+--089e0118419206e64304d85af860
+Content-Type: text/plain; charset=UTF-8
+
+Today I want to talk about the paradigms of programming, how they affect 
+our success as designers of computer programs, how they should be taught, 
+and how they should be embodied in our programming languages. 
+A familiar example of a paradigm of programming is the technique of 
+structured programming, which appears to be the dominant paradigm in most 
+current treatments of programming methodology. Structured programming, as 
+formulated by Dijkstra, Wirth, and Parnas, among others, consists of two 
+phases. 
+
+--089e0118419206e64304d85af860
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>Today I want to talk about the paradigms of programmi=
+ng, how they affect our success as designers of computer programs, how they=
+ should be taught, and how they should be embodied in our programming langu=
+ages.=C2=A0</div>
+<div>A familiar example of a paradigm of programming is the technique of st=
+ructured programming, which appears to be the dominant paradigm in most cur=
+rent treatments of programming methodology. Structured programming, as form=
+ulated by Dijkstra, Wirth, and Parnas, among others, consists of two phases=
+.=C2=A0</div>
+</div>
+
+--089e0118419206e64304d85af860--

backend/demo/src/main/resources/turing/turing_award_1979.eml

@@ -0,0 +1,33 @@
+MIME-Version: 1.0
+From: "Kenneth E. Iverson" <kenneth.iverson@example.com>
+Date: Mon, 29 Oct 1979 12:00:00 -0500
+Message-ID: <turing1979@cketti.de>
+Subject: Notation as a Tool of Thought
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=20cf30549cad76254e04d85ae4df
+
+--20cf30549cad76254e04d85ae4df
+Content-Type: text/plain; charset=UTF-8
+
+The importance of nomenclature, notation, and language as tools of thought 
+has long been recognized. In chemistry and in botany, for example, the 
+establishment of systems of nomenclature by Lavoisier and Linnaeus did much 
+to stimulate and to channel later investigation. Concerning language, 
+George Boole in his Laws off Thought asserted "That language is an 
+instrument of human reason, and not merely a medium for the expression of 
+thought, is a truth generally admitted."
+
+--20cf30549cad76254e04d85ae4df
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>The importance of nomenclature, notation, and languag=
+e as tools of thought has long been recognized. In chemistry and in botany,=
+ for example, the establishment of systems of nomenclature by Lavoisier and=
+ Linnaeus did much to stimulate and to channel later investigation. Concern=
+ing language, George Boole in his Laws off Thought asserted &quot;That lang=
+uage is an instrument of human reason, and not merely a medium for the expr=
+ession of thought, is a truth generally admitted.&quot;</div>
+</div>
+
+--20cf30549cad76254e04d85ae4df--

backend/demo/src/main/resources/turing/turing_award_1981.eml

@@ -0,0 +1,51 @@
+MIME-Version: 1.0
+From: "Edgar F. Codd" <edgar.codd@example.com>
+Date: Wed, 11 Nov 1981 12:00:00 -0800
+Message-ID: <turing1981@cketti.de>
+Subject: Relational Database: A Practical Foundation for Productivity
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=047d7bfd026c782f2404d85ab4b8
+
+--047d7bfd026c782f2404d85ab4b8
+Content-Type: text/plain; charset=UTF-8
+
+It is well known that the growth in demands from end users for new 
+applications is outstripping the capability of data processing departments 
+to implement the corresponding application programs. There are two 
+complementary approaches to attacking this problem (and both approaches are 
+needed): one is to put end users into direct touch with the information 
+stored in computers; the other is to increase the productivity of data 
+processing professionals in the development of application programs. It is 
+less well known that a single technology, relational database management, 
+provides a practical foundation for both approaches. It is explained why 
+this 
+is so. 
+While developing this productivity theme, it is noted that the time has 
+come to draw a very sharp line between relational and non-relational 
+database systems, so that the label "relational" will not be used in 
+misleading ways. 
+The key to drawing this line is something called a "relational processing 
+capability."
+
+--047d7bfd026c782f2404d85ab4b8
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>It is well known that the growth in demands from end =
+users for new applications is outstripping the capability of data processin=
+g departments to implement the corresponding application programs. There ar=
+e two complementary approaches to attacking this problem (and both approach=
+es are needed): one is to put end users into direct touch with the informat=
+ion stored in computers; the other is to increase the productivity of data =
+processing professionals in the development of application programs. It is =
+less well known that a single technology, relational database management, p=
+rovides a practical foundation for both approaches. It is explained why thi=
+s=C2=A0</div>
+<div><div>is so.=C2=A0</div><div>While developing this productivity theme, =
+it is noted that the time has come to draw a very sharp line between relati=
+onal and non-relational database systems, so that the label &quot;relationa=
+l&quot; will not be used in misleading ways.=C2=A0</div>
+<div>The key to drawing this line is something called a &quot;relational pr=
+ocessing capability.&quot;</div></div></div>
+
+--047d7bfd026c782f2404d85ab4b8--

backend/demo/src/main/resources/turing/turing_award_1983.eml

@@ -0,0 +1,46 @@
+MIME-Version: 1.0
+From: Dennis Ritchie <dennis.ritchie@example.com>
+Date: Mon, 24 Oct 1983 12:00:00 -0400
+Message-ID: <turing1983@cketti.de>
+Subject: Reflections on Software Research
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=bcaec54fbb2250035a04d85aabcd
+
+--bcaec54fbb2250035a04d85aabcd
+Content-Type: text/plain; charset=UTF-8
+
+The UNIX operating system has suddenly become news, but it is not new. It 
+began in 1969 when Ken Thompson discovered a little-used PDP-7 computer and 
+set out to fashion a computing environment that he liked, His work soon 
+attracted me; I joined in the enterprise, though most of the ideas, and 
+most of the work for that matter, were his. Before long, others from our 
+group in the research area of AT&T Bell Laboratories were using the system; 
+Joe Ossanna, Doug Mcllroy, and 
+Bob Morris were especially enthusiastic critics and contributors, tn 1971, 
+we acquired a PDP-11, and by the end of that year we were supporting our 
+first real users: three typists entering patent applications. In 1973, the 
+system was rewritten in the C language, and in that year, too, it was first 
+described publicly at the Operating Systems Principles conference; the 
+resulting paper appeared in Communications of the ACM the next year. 
+
+--bcaec54fbb2250035a04d85aabcd
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>The UNIX operating system has suddenly become news, b=
+ut it is not new. It began in 1969 when Ken Thompson discovered a little-us=
+ed PDP-7 computer and set out to fashion a computing environment that he li=
+ked, His work soon attracted me; I joined in the enterprise, though most of=
+ the ideas, and most of the work for that matter, were his. Before long, ot=
+hers from our group in the research area of AT&amp;T Bell Laboratories were=
+ using the system; Joe Ossanna, Doug Mcllroy, and=C2=A0</div>
+<div>Bob Morris were especially enthusiastic critics and contributors, tn 1=
+971, we acquired a PDP-11, and by the end of that year we were supporting o=
+ur first real users: three typists entering patent applications. In 1973, t=
+he system was rewritten in the C language, and in that year, too, it was fi=
+rst described publicly at the Operating Systems Principles conference; the =
+resulting paper appeared in Communications of the ACM the next year.=C2=A0<=
+/div>
+</div>
+
+--bcaec54fbb2250035a04d85aabcd--

backend/demo/src/main/resources/turing/turing_award_1987.eml

@@ -0,0 +1,42 @@
+MIME-Version: 1.0
+From: John Cocke <john.cocke@example.com>
+Date: Mon, 16 Feb 1987 12:00:00 -0600
+Message-ID: <turing1987@cketti.de>
+Subject: The Search for Performance in Scientific Processors
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=047d7bfd079665fb2c04d85ad0bc
+
+--047d7bfd079665fb2c04d85ad0bc
+Content-Type: text/plain; charset=UTF-8
+
+I am honored and grateful to have been selected to join the ranks of ACM 
+Turing Award winners. I probably have spent too much of my life thinking 
+about computers, but I do not regret it a bit. I was fortunate to enter the 
+field of computing in its infancy and participate in its explosive growth. 
+The rapid evolution of the underlying technologies in the past 30 years has 
+not only provided an exciting environment, but has also presented a 
+constant stream of intellectual challenges to those of us trying to harness 
+this power and squeeze it to the last ounce. I hasten to say, especially to 
+the 
+younger members of the audience, there is no end in sight. As a matter of 
+fact, I believe the next thirty years will be even more exciting and rich 
+with challenges. 
+
+--047d7bfd079665fb2c04d85ad0bc
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>I am honored and grateful to have been selected to jo=
+in the ranks of ACM Turing Award winners. I probably have spent too much of=
+ my life thinking about computers, but I do not regret it a bit. I was fort=
+unate to enter the field of computing in its infancy and participate in its=
+ explosive growth. The rapid evolution of the underlying technologies in th=
+e past 30 years has not only provided an exciting environment, but has also=
+ presented a constant stream of intellectual challenges to those of us tryi=
+ng to harness this power and squeeze it to the last ounce. I hasten to say,=
+ especially to the=C2=A0</div>
+<div>younger members of the audience, there is no end in sight. As a matter=
+ of fact, I believe the next thirty years will be even more exciting and ri=
+ch with challenges.=C2=A0</div></div>
+
+--047d7bfd079665fb2c04d85ad0bc--

backend/demo/src/main/resources/turing/turing_award_1991.eml

@@ -0,0 +1,44 @@
+MIME-Version: 1.0
+From: Robin Milner <robin.milner@example.com>
+Date: Mon, 18 Nov 1991 12:00:00 -0700
+Message-ID: <turing1991@cketti.de>
+Subject: Elements of Interaction
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=047d7b86e6de64aecb04d85affff
+
+--047d7b86e6de64aecb04d85affff
+Content-Type: text/plain; charset=UTF-8
+
+I am greatly honored to receive this award, bearing the name of Alan 
+Turing. Perhaps Turing would be pleased that it should go to someone 
+educated at his old college, King's College at Cambridge. While there in 
+1956 I wrote my first computer program; it was on the EDSAC. Of course 
+EDSAC made history. But I am ashamed to say it did not lure me into 
+computing, and I ignored computers for four years. In 1960 I thought that 
+computers might be more peaceful to handle than schoolchildren--I was then 
+a teacher--so I applied for a job at Ferranti in London, at the time of 
+Pegasus. I was asked at the interview whether I would like to devote my 
+life to computers. This daunting notion had never crossed my mind. Well, 
+here I am still, and I have had the lucky chance to grow alongside computer 
+science.
+
+--047d7b86e6de64aecb04d85affff
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>I am greatly honored to receive this award, bearing t=
+he name of Alan Turing. Perhaps Turing would be pleased that it should go t=
+o someone educated at his old college, King&#39;s College at Cambridge. Whi=
+le there in 1956 I wrote my first computer program; it was on the EDSAC. Of=
+ course EDSAC made history. But I am ashamed to say it did not lure me into=
+ computing, and I ignored computers for four years. In 1960 I thought that =
+computers might be more peaceful to handle than schoolchildren--I was then =
+a teacher--so I applied for a job at Ferranti in London, at the time of=C2=
+=A0</div>
+<div>Pegasus. I was asked at the interview whether I would like to devote m=
+y life to computers. This daunting notion had never crossed my mind. Well, =
+here I am still, and I have had the lucky chance to grow alongside computer=
+ science.</div>
+</div>
+
+--047d7b86e6de64aecb04d85affff--

backend/demo/src/main/resources/turing/turing_award_1996.eml

@@ -0,0 +1,28 @@
+MIME-Version: 1.0
+From: Amir Pnueli <amir.pnueli@example.com>
+Date: Thu, 15 Feb 1996 12:00:00 -0500
+Message-ID: <turing1996@cketti.de>
+Subject: Verification Engineering: A Future Profession
+To: Alan Turing <alan@turing.example>
+Content-Type: multipart/alternative; boundary=bcaec54fbb222acf6704d85aa523
+
+--bcaec54fbb222acf6704d85aa523
+Content-Type: text/plain; charset=UTF-8
+
+It is time that formal verification (of both software and hardware systems) 
+be demoted from an art practiced by the enlightened few to an activity 
+routinely and mundanely performed by a cadre of Verification Engineers (a 
+new profession), as a standard part of the system development process.
+
+--bcaec54fbb222acf6704d85aa523
+Content-Type: text/html; charset=UTF-8
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"ltr"><div>It is time that formal verification (of both software=
+ and hardware systems) be demoted from an art practiced by the enlightened =
+few to an activity routinely and mundanely performed by a cadre of Verifica=
+tion Engineers (a new profession), as a standard part of the system develop=
+ment process.</div>
+</div>
+
+--bcaec54fbb222acf6704d85aa523--