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-rw-r--r--deno/mail-relay/.gitignore3
-rw-r--r--deno/mail-relay/app.ts81
-rw-r--r--deno/mail-relay/aws/app.ts136
-rw-r--r--deno/mail-relay/aws/context.ts41
-rw-r--r--deno/mail-relay/aws/deliver.ts114
-rw-r--r--deno/mail-relay/aws/retriever.ts100
-rw-r--r--deno/mail-relay/better-js.ts14
-rw-r--r--deno/mail-relay/config.ts103
-rw-r--r--deno/mail-relay/cron.ts43
-rw-r--r--deno/mail-relay/db.test.ts23
-rw-r--r--deno/mail-relay/db.ts145
-rw-r--r--deno/mail-relay/deno.json25
-rw-r--r--deno/mail-relay/dovecot/deliver.ts102
-rw-r--r--deno/mail-relay/dumb-smtp-server.ts119
-rw-r--r--deno/mail-relay/log.ts116
-rw-r--r--deno/mail-relay/mail.test.ts143
-rw-r--r--deno/mail-relay/mail.ts340
17 files changed, 0 insertions, 1648 deletions
diff --git a/deno/mail-relay/.gitignore b/deno/mail-relay/.gitignore
deleted file mode 100644
index 327aef0..0000000
--- a/deno/mail-relay/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-out
-.env.local
-db.sqlite
diff --git a/deno/mail-relay/app.ts b/deno/mail-relay/app.ts
deleted file mode 100644
index deb72c2..0000000
--- a/deno/mail-relay/app.ts
+++ /dev/null
@@ -1,81 +0,0 @@
-import { join } from "@std/path";
-import { Hono } from "hono";
-import { logger as honoLogger } from "hono/logger";
-
-import log from "./log.ts";
-import config from "./config.ts";
-import { DbService } from "./db.ts";
-import {
- AliasRecipientMailHook,
- FallbackRecipientHook,
- MailDeliverer,
-} from "./mail.ts";
-import { DovecotMailDeliverer } from "./dovecot/deliver.ts";
-import { CronTask, CronTaskConfig } from "./cron.ts";
-import { DumbSmtpServer } from "./dumb-smtp-server.ts";
-
-export abstract class AppBase {
- protected readonly db: DbService;
- protected readonly crons: CronTask[] = [];
- protected readonly routes: Hono[] = [];
- protected readonly inboundDeliverer: MailDeliverer;
- protected readonly hono = new Hono();
-
- protected abstract readonly outboundDeliverer: MailDeliverer;
-
- constructor() {
- const dataPath = config.get("dataPath");
- Deno.mkdirSync(dataPath, { recursive: true });
- log.path = join(dataPath, "log");
- log.info(config);
-
- this.db = new DbService(join(dataPath, "db.sqlite"));
- this.inboundDeliverer = new DovecotMailDeliverer();
- this.inboundDeliverer.preHooks.push(
- new FallbackRecipientHook(new Set(config.getList("inboundFallback"))),
- new AliasRecipientMailHook(join(dataPath, "aliases.csv")),
- );
-
- this.hono.onError((err, c) => {
- log.error(err);
- return c.json({ msg: "Server error, check its log." }, 500);
- });
-
- this.hono.use(honoLogger());
- this.hono.post("/send/raw", async (context) => {
- const body = await context.req.text();
- if (body.trim().length === 0) {
- return context.json({ msg: "Can't send an empty mail." }, 400);
- } else {
- const result = await this.outboundDeliverer.deliverRaw(body);
- return context.json({
- awsMessageId: result.awsMessageId,
- });
- }
- });
- this.hono.post("/receive/raw", async (context) => {
- await this.inboundDeliverer.deliverRaw(await context.req.text());
- return context.json({ "msg": "Done!" });
- });
- }
-
- createCron(config: CronTaskConfig): CronTask {
- const cron = new CronTask(config);
- this.crons.push(cron);
- return cron;
- }
-
- async setup() {
- await this.db.migrate()
- }
-
- serve(): { smtp: DumbSmtpServer; http: Deno.HttpServer } {
- const smtp = new DumbSmtpServer(this.outboundDeliverer);
- smtp.serve();
- const http = Deno.serve({
- hostname: config.HTTP_HOST,
- port: config.HTTP_PORT,
- }, this.hono.fetch);
- return { smtp, http };
- }
-}
diff --git a/deno/mail-relay/aws/app.ts b/deno/mail-relay/aws/app.ts
deleted file mode 100644
index 1fda64e..0000000
--- a/deno/mail-relay/aws/app.ts
+++ /dev/null
@@ -1,136 +0,0 @@
-import { parseArgs } from "@std/cli";
-import { z } from "zod";
-import { zValidator } from "@hono/zod-validator";
-
-import log from "../log.ts";
-import config from "../config.ts";
-import { AppBase } from "../app.ts";
-import { AwsContext } from "./context.ts";
-import {
- AwsMailDeliverer,
- AwsMailMessageIdRewriteHook,
- AwsMailMessageIdSaveHook,
-} from "./deliver.ts";
-import { AwsMailRetriever } from "./retriever.ts";
-
-export class AwsRelayApp extends AppBase {
- readonly #aws = new AwsContext();
- readonly #retriever;
- protected readonly outboundDeliverer = new AwsMailDeliverer(this.#aws);
-
- constructor() {
- super();
- this.#retriever = new AwsMailRetriever(this.#aws, this.inboundDeliverer);
-
- this.outboundDeliverer.preHooks.push(
- new AwsMailMessageIdRewriteHook(this.db),
- );
- this.outboundDeliverer.postHooks.push(
- new AwsMailMessageIdSaveHook(this.db),
- );
-
- this.hono.post(
- `/${config.get("awsInboundPath")}`,
- async (ctx, next) => {
- const auth = ctx.req.header("Authorization");
- if (auth !== config.get("awsInboundKey")) {
- return ctx.json({ "msg": "Bad auth!" }, 403);
- }
- await next();
- },
- zValidator(
- "json",
- z.object({
- key: z.string(),
- recipients: z.optional(z.array(z.string())),
- }),
- ),
- async (ctx) => {
- const { key, recipients } = ctx.req.valid("json");
- await this.#retriever.deliverS3Mail(key, recipients);
- return ctx.json({ "msg": "Done!" });
- },
- );
- }
-
- realServe() {
- this.createCron({
- name: "live-mail-recycler",
- interval: 6 * 3600 * 1000,
- callback: () => {
- return this.#retriever.recycleLiveMails();
- },
- startNow: true,
- });
-
- return this.serve();
- }
-
- readonly cli = {
- "init": (_: unknown) => {
- log.info("Just init!");
- return Promise.resolve();
- },
- "list-lives": async (_: unknown) => {
- const liveMails = await this.#retriever.listLiveMails();
- log.info(`Total ${liveMails.length}:`);
- log.info(liveMails.join("\n"));
- },
- "recycle-lives": async (_: unknown) => {
- await this.#retriever.recycleLiveMails();
- },
- "serve": async (_: unknown) => {
- await this.serve().http.finished;
- },
- "real-serve": async (_: unknown) => {
- await this.realServe().http.finished;
- },
- } as const;
-}
-
-const nonServerCli = {
- "sendmail": async (_: unknown) => {
- const decoder = new TextDecoder();
- let text = "";
- for await (const chunk of Deno.stdin.readable) {
- text += decoder.decode(chunk);
- }
-
- const res = await fetch(
- `http://localhost:${config.HTTP_PORT}/send/raw`,
- {
- method: "post",
- body: text,
- },
- );
- log.infoOrError(!res.ok, res);
- log.infoOrError(!res.ok, "Body\n" + await res.text());
- if (!res.ok) Deno.exit(-1);
- },
-} as const;
-
-if (import.meta.main) {
- const args = parseArgs(Deno.args);
-
- if (args._.length === 0) {
- throw new Error("You must specify a command.");
- }
-
- const command = args._[0];
-
- if (command in nonServerCli) {
- log.info(`Run non-server command ${command}.`);
- await nonServerCli[command as keyof typeof nonServerCli](args);
- Deno.exit(0);
- }
-
- const app = new AwsRelayApp();
- await app.setup();
- if (command in app.cli) {
- log.info(`Run command ${command}.`);
- await app.cli[command as keyof AwsRelayApp["cli"]](args);
- Deno.exit(0);
- } else {
- throw new Error(command + " is not a valid command.");
- }
-}
diff --git a/deno/mail-relay/aws/context.ts b/deno/mail-relay/aws/context.ts
deleted file mode 100644
index b1e0336..0000000
--- a/deno/mail-relay/aws/context.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-import {
- CopyObjectCommand,
- DeleteObjectCommand,
- S3Client,
-} from "@aws-sdk/client-s3";
-import { FetchHttpHandler } from "@smithy/fetch-http-handler";
-
-import config from "../config.ts";
-
-export class AwsContext {
- readonly credentials = () =>
- Promise.resolve({
- accessKeyId: config.get("awsUser"),
- secretAccessKey: config.get("awsPassword"),
- });
- readonly requestHandler = new FetchHttpHandler();
-
- get region() {
- return config.get("awsRegion");
- }
-}
-
-export async function s3MoveObject(
- client: S3Client,
- bucket: string,
- path: string,
- newPath: string,
-): Promise<void> {
- const copyCommand = new CopyObjectCommand({
- Bucket: bucket,
- Key: newPath,
- CopySource: `${bucket}/${path}`,
- });
- await client.send(copyCommand);
-
- const deleteCommand = new DeleteObjectCommand({
- Bucket: bucket,
- Key: path,
- });
- await client.send(deleteCommand);
-}
diff --git a/deno/mail-relay/aws/deliver.ts b/deno/mail-relay/aws/deliver.ts
deleted file mode 100644
index 0db5fa8..0000000
--- a/deno/mail-relay/aws/deliver.ts
+++ /dev/null
@@ -1,114 +0,0 @@
-// spellchecker: words sesv2 amazonses
-
-import { SendEmailCommand, SESv2Client } from "@aws-sdk/client-sesv2";
-
-import log from "../log.ts";
-import { DbService } from "../db.ts";
-import {
- Mail,
- MailDeliverContext,
- MailDeliverHook,
- SyncMailDeliverer,
-} from "../mail.ts";
-import { AwsContext } from "./context.ts";
-
-declare module "../mail.ts" {
- interface MailDeliverResult {
- awsMessageId?: string;
- }
-}
-
-export class AwsMailMessageIdRewriteHook implements MailDeliverHook {
- readonly #db;
-
- constructor(db: DbService) {
- this.#db = db;
- }
-
- async callback(context: MailDeliverContext): Promise<void> {
- log.info("Rewrite message ids...");
- const addresses = context.mail.simpleFindAllAddresses();
- log.info(`Addresses found in mail: ${addresses.join(", ")}.`);
- for (const address of addresses) {
- const awsMessageId = await this.#db.messageIdToAws(address);
- if (awsMessageId != null && awsMessageId.length !== 0) {
- log.info(`Rewrite ${address} to ${awsMessageId}.`);
- context.mail.raw = context.mail.raw.replaceAll(address, awsMessageId);
- }
- }
- log.info("Done rewrite message ids.");
- }
-}
-
-export class AwsMailMessageIdSaveHook implements MailDeliverHook {
- readonly #db;
-
- constructor(db: DbService) {
- this.#db = db;
- }
-
- async callback(context: MailDeliverContext): Promise<void> {
- log.info("Save aws message ids...");
- const messageId = context.mail.startSimpleParse().sections().headers()
- .messageId();
- if (messageId == null) {
- log.info("Original mail does not have message id. Skip saving.");
- return;
- }
- if (context.result.awsMessageId != null) {
- log.info(`Saving ${messageId} => ${context.result.awsMessageId}.`);
- await this.#db.addMessageIdMap({
- message_id: messageId,
- aws_message_id: context.result.awsMessageId,
- });
- }
- log.info("Done save message ids.");
- }
-}
-
-export class AwsMailDeliverer extends SyncMailDeliverer {
- readonly name = "aws";
- readonly #aws;
- readonly #ses;
-
- constructor(aws: AwsContext) {
- super();
- this.#aws = aws;
- this.#ses = new SESv2Client(aws);
- }
-
- protected override async doDeliver(
- mail: Mail,
- context: MailDeliverContext,
- ): Promise<void> {
- log.info("Begin to call aws send-email api...");
-
- try {
- const sendCommand = new SendEmailCommand({
- Content: {
- Raw: { Data: mail.toUtf8Bytes() },
- },
- });
-
- const res = await this.#ses.send(sendCommand);
- if (res.MessageId == null) {
- log.warn("Aws send-email returns no message id.");
- } else {
- context.result.awsMessageId =
- `${res.MessageId}@${this.#aws.region}.amazonses.com`;
- }
-
- context.result.recipients.set("*", {
- kind: "done",
- message:
- `Successfully called aws send-email, message id ${context.result.awsMessageId}.`,
- });
- } catch (cause) {
- context.result.recipients.set("*", {
- kind: "fail",
- message: "An error was thrown when calling aws send-email." + cause,
- cause,
- });
- }
- }
-}
diff --git a/deno/mail-relay/aws/retriever.ts b/deno/mail-relay/aws/retriever.ts
deleted file mode 100644
index 756cfc3..0000000
--- a/deno/mail-relay/aws/retriever.ts
+++ /dev/null
@@ -1,100 +0,0 @@
-/// <reference types="npm:@types/node" />
-
-import {
- GetObjectCommand,
- ListObjectsV2Command,
- S3Client,
-} from "@aws-sdk/client-s3";
-
-import log from "../log.ts";
-import config from "../config.ts";
-import "../better-js.ts";
-
-import { Mail, MailDeliverer } from "../mail.ts";
-import { AwsContext, s3MoveObject } from "./context.ts";
-
-const AWS_SES_S3_SETUP_TAG = "AMAZON_SES_SETUP_NOTIFICATION";
-
-export class AwsMailRetriever {
- readonly liveMailPrefix = "mail/live/";
- readonly archiveMailPrefix = "mail/archive/";
- readonly mailBucket = config.get("awsMailBucket");
-
- readonly #s3;
-
- constructor(
- aws: AwsContext,
- public readonly inboundDeliverer: MailDeliverer,
- ) {
- this.#s3 = new S3Client(aws);
- }
-
- async listLiveMails(): Promise<string[]> {
- log.info("Begin to retrieve live mails.");
-
- const listCommand = new ListObjectsV2Command({
- Bucket: this.mailBucket,
- Prefix: this.liveMailPrefix,
- });
- const res = await this.#s3.send(listCommand);
-
- if (res.Contents == null) {
- log.warn("Listing live mails in S3 returns null Content.");
- return [];
- }
-
- const result: string[] = [];
- for (const object of res.Contents) {
- if (object.Key == null) {
- log.warn("Listing live mails in S3 returns an object with no Key.");
- continue;
- }
-
- if (object.Key.endsWith(AWS_SES_S3_SETUP_TAG)) continue;
-
- result.push(object.Key.slice(this.liveMailPrefix.length));
- }
- return result;
- }
-
- async deliverS3Mail(s3Key: string, recipients: string[] = []) {
- log.info(`Begin to deliver s3 mail ${s3Key} to ${recipients.join(" ")}...`);
-
- log.info(`Fetching s3 mail ${s3Key}...`);
- const mailPath = `${this.liveMailPrefix}${s3Key}`;
- const command = new GetObjectCommand({
- Bucket: this.mailBucket,
- Key: mailPath,
- });
- const res = await this.#s3.send(command);
-
- if (res.Body == null) {
- throw new Error("S3 mail returns a null body.");
- }
-
- const rawMail = await res.Body.transformToString();
- log.info(`Done fetching s3 mail ${s3Key}.`);
-
- log.info(`Delivering s3 mail ${s3Key}...`);
- const mail = new Mail(rawMail);
- await this.inboundDeliverer.deliver({ mail, recipients: recipients });
- log.info(`Done delivering s3 mail ${s3Key}.`);
-
- const date = mail.startSimpleParse().sections().headers().date();
- const dateString = date?.toFileNameString(true) ?? "invalid-date";
- const newPath = `${this.archiveMailPrefix}${dateString}/${s3Key}`;
-
- log.info(`Archiving s3 mail ${s3Key} to ${newPath}...`);
- await s3MoveObject(this.#s3, this.mailBucket, mailPath, newPath);
- log.info(`Done delivering s3 mail ${s3Key}...`);
- }
-
- async recycleLiveMails() {
- log.info("Begin to recycle live mails...");
- const mails = await this.listLiveMails();
- log.info(`Found ${mails.length} live mails`);
- for (const s3Key of mails) {
- await this.deliverS3Mail(s3Key);
- }
- }
-}
diff --git a/deno/mail-relay/better-js.ts b/deno/mail-relay/better-js.ts
deleted file mode 100644
index c424a6e..0000000
--- a/deno/mail-relay/better-js.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-declare global {
- interface Date {
- toFileNameString(dateOnly?: boolean): string;
- }
-}
-
-Object.defineProperty(Date.prototype, "toFileNameString", {
- value: function (this: Date, dateOnly?: boolean) {
- const str = this.toISOString();
- return dateOnly === true
- ? str.slice(0, str.indexOf("T"))
- : str.replaceAll(/:|\./g, "-");
- },
-});
diff --git a/deno/mail-relay/config.ts b/deno/mail-relay/config.ts
deleted file mode 100644
index d58b163..0000000
--- a/deno/mail-relay/config.ts
+++ /dev/null
@@ -1,103 +0,0 @@
-export const APP_PREFIX = "crupest";
-export const APP_NAME = "mail-server";
-
-export interface ConfigItemDefinition {
- description: string;
- default?: string;
- secret?: boolean;
-}
-
-export const CONFIG_DEFINITIONS = {
- mailDomain: {
- description: "the part after `@` of an address",
- },
- dataPath: {
- description: "path to save app persistent data",
- },
- ldaPath: {
- description: "full path of lda executable",
- "default": "/dovecot/libexec/dovecot/dovecot-lda",
- },
- inboundFallback: {
- description: "comma separated addresses used as fallback recipients",
- "default": "",
- },
- awsInboundPath: {
- description: "(random set) path for aws sns",
- },
- awsInboundKey: {
- description: "(random set) http header Authorization for aws sns",
- },
- awsRegion: {
- description: "aws region",
- },
- awsUser: {
- description: "aws access key id",
- },
- awsPassword: {
- description: "aws secret access key",
- secret: true,
- },
- awsMailBucket: {
- description: "aws s3 bucket saving raw mails",
- secret: true,
- },
-} as const satisfies Record<string, ConfigItemDefinition>;
-
-type ConfigDefinitions = typeof CONFIG_DEFINITIONS;
-type ConfigNames = keyof ConfigDefinitions;
-type ConfigMap = {
- [K in ConfigNames]: ConfigDefinitions[K] & {
- readonly env: string;
- readonly value: string;
- };
-};
-
-function resolveConfig(): ConfigMap {
- const result: Record<string, ConfigMap[ConfigNames]> = {};
- for (const [name, def] of Object.entries(CONFIG_DEFINITIONS)) {
- const env = `${APP_PREFIX}-${APP_NAME}-${
- name.replace(/[A-Z]/g, (m) => "-" + m.toLowerCase())
- }`.replaceAll("-", "_").toUpperCase();
- const value = Deno.env.get(env) ?? (def as ConfigItemDefinition).default;
- if (value == null) {
- throw new Error(`Required env ${env} (${def.description}) is not set.`);
- }
- result[name] = { ...def, env, value };
- }
- return result as ConfigMap;
-}
-
-export class Config {
- #config = resolveConfig();
-
- readonly HTTP_HOST = "0.0.0.0";
- readonly HTTP_PORT = 2345;
- readonly SMTP_HOST = "127.0.0.1";
- readonly SMTP_PORT = 2346;
-
- getAllConfig<K extends ConfigNames>(key: K): ConfigMap[K] {
- return this.#config[key];
- }
-
- get(key: ConfigNames): string {
- return this.getAllConfig(key).value;
- }
-
- getList(key: ConfigNames, separator: string = ","): string[] {
- const value = this.get(key);
- if (value.length === 0) return [];
- return value.split(separator);
- }
-
- [Symbol.for("Deno.customInspect")]() {
- return Object.entries(this.#config).map(([key, item]) =>
- `${key} [env: ${item.env}]: ${
- (item as ConfigItemDefinition).secret === true ? "***" : item.value
- }`
- ).join("\n");
- }
-}
-
-const config = new Config();
-export default config;
diff --git a/deno/mail-relay/cron.ts b/deno/mail-relay/cron.ts
deleted file mode 100644
index bf0a0be..0000000
--- a/deno/mail-relay/cron.ts
+++ /dev/null
@@ -1,43 +0,0 @@
-export type CronCallback = (task: CronTask) => Promise<void>;
-
-export interface CronTaskConfig {
- readonly name: string;
- readonly interval: number;
- readonly callback: CronCallback;
- readonly startNow?: boolean;
-}
-
-export class CronTask {
- #timerTag: number | null = null;
-
- constructor(public readonly config: CronTaskConfig) {
- if (config.interval <= 0) {
- throw new Error("Cron task interval must be positive.");
- }
-
- if (config.startNow === true) {
- this.start();
- }
- }
-
- get running(): boolean {
- return this.#timerTag != null;
- }
-
- start() {
- if (this.#timerTag == null) {
- this.#timerTag = setInterval(
- this.config.callback,
- this.config.interval,
- this,
- );
- }
- }
-
- stop() {
- if (this.#timerTag != null) {
- clearInterval(this.#timerTag);
- this.#timerTag = null;
- }
- }
-}
diff --git a/deno/mail-relay/db.test.ts b/deno/mail-relay/db.test.ts
deleted file mode 100644
index 60035c4..0000000
--- a/deno/mail-relay/db.test.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-import { describe, it } from "@std/testing/bdd";
-import { expect } from "@std/expect/expect";
-
-import { DbService } from "./db.ts";
-
-describe("DbService", () => {
- const mockRow = {
- message_id: "mock-message-id@mock.mock",
- aws_message_id: "mock-aws-message-id@mock.mock",
- };
-
- it("works", async () => {
- const db = new DbService(":memory:");
- await db.migrate();
- await db.addMessageIdMap(mockRow);
- expect(await db.messageIdToAws(mockRow.message_id)).toBe(
- mockRow.aws_message_id,
- );
- expect(await db.messageIdFromAws(mockRow.aws_message_id)).toBe(
- mockRow.message_id,
- );
- });
-});
diff --git a/deno/mail-relay/db.ts b/deno/mail-relay/db.ts
deleted file mode 100644
index 9b05e32..0000000
--- a/deno/mail-relay/db.ts
+++ /dev/null
@@ -1,145 +0,0 @@
-// spellchecker: words kysely insertable updateable introspector
-
-import {
- Generated,
- Insertable,
- Kysely,
- Migration,
- Migrator,
- SqliteDatabase,
- SqliteDialect,
- SqliteStatement,
-} from "kysely";
-import * as sqlite from "@db/sqlite";
-
-class SqliteStatementAdapter implements SqliteStatement {
- constructor(public readonly stmt: sqlite.Statement) {}
-
- get reader(): boolean {
- return this.stmt.columnNames().length >= 1;
- }
-
- all(parameters: readonly unknown[]): unknown[] {
- return this.stmt.all(...parameters as sqlite.BindValue[]);
- }
-
- iterate(parameters: readonly unknown[]): IterableIterator<unknown> {
- return this.stmt.iter(...parameters as sqlite.BindValue[]);
- }
-
- run(
- parameters: readonly unknown[],
- ): { changes: number | bigint; lastInsertRowid: number | bigint } {
- const { db } = this.stmt;
- const totalChangesBefore = db.totalChanges;
- const changes = this.stmt.run(...parameters as sqlite.BindValue[]);
- return {
- changes: totalChangesBefore === db.totalChanges ? 0 : changes,
- lastInsertRowid: db.lastInsertRowId,
- };
- }
-}
-
-class SqliteDatabaseAdapter implements SqliteDatabase {
- constructor(public readonly db: sqlite.Database) {}
-
- prepare(sql: string): SqliteStatementAdapter {
- return new SqliteStatementAdapter(this.db.prepare(sql));
- }
-
- close(): void {
- this.db.close();
- }
-}
-
-export class DbError extends Error {
-}
-
-interface AwsMessageIdMapTable {
- id: Generated<number>;
- message_id: string;
- aws_message_id: string;
-}
-
-interface Database {
- aws_message_id_map: AwsMessageIdMapTable;
-}
-
-const migrations: Record<string, Migration> = {
- "0001-init": {
- // deno-lint-ignore no-explicit-any
- async up(db: Kysely<any>): Promise<void> {
- await db.schema
- .createTable("aws_message_id_map")
- .addColumn("id", "integer", (col) => col.primaryKey().autoIncrement())
- .addColumn("message_id", "text", (col) => col.notNull().unique())
- .addColumn("aws_message_id", "text", (col) => col.notNull().unique())
- .execute();
-
- for (const column of ["message_id", "aws_message_id"]) {
- await db.schema
- .createIndex(`aws_message_id_map_${column}`)
- .on("aws_message_id_map")
- .column(column)
- .execute();
- }
- },
-
- // deno-lint-ignore no-explicit-any
- async down(db: Kysely<any>): Promise<void> {
- await db.schema.dropTable("aws_message_id_map").execute();
- },
- },
-};
-
-export class DbService {
- #db;
- #kysely;
- #migrator;
-
- constructor(public readonly path: string) {
- this.#db = new sqlite.Database(path);
- this.#kysely = new Kysely<Database>({
- dialect: new SqliteDialect(
- { database: new SqliteDatabaseAdapter(this.#db) },
- ),
- });
- this.#migrator = new Migrator({
- db: this.#kysely,
- provider: {
- getMigrations(): Promise<Record<string, Migration>> {
- return Promise.resolve(migrations);
- },
- },
- });
- }
-
- async migrate(): Promise<void> {
- await this.#migrator.migrateToLatest();
- }
-
- async addMessageIdMap(
- mail: Insertable<AwsMessageIdMapTable>,
- ): Promise<number> {
- const inserted = await this.#kysely.insertInto("aws_message_id_map").values(
- mail,
- ).executeTakeFirstOrThrow();
- return Number(inserted.insertId!);
- }
-
- async messageIdToAws(messageId: string): Promise<string | null> {
- const row = await this.#kysely.selectFrom("aws_message_id_map").where(
- "message_id",
- "=",
- messageId,
- ).select("aws_message_id").executeTakeFirst();
- return row?.aws_message_id ?? null;
- }
-
- async messageIdFromAws(awsMessageId: string): Promise<string | null> {
- const row = await this.#kysely.selectFrom("aws_message_id_map")
- .where("aws_message_id", "=", awsMessageId).select("message_id")
- .executeTakeFirst();
- return row?.message_id ?? null;
- }
-}
diff --git a/deno/mail-relay/deno.json b/deno/mail-relay/deno.json
deleted file mode 100644
index 9066b33..0000000
--- a/deno/mail-relay/deno.json
+++ /dev/null
@@ -1,25 +0,0 @@
-{
- "tasks": {
- "run": "deno run -A aws/app.ts",
- "test": "deno test -A",
- "compile": "deno compile -o out/crupest-relay -A aws/app.ts"
- },
- "imports": {
- "@aws-sdk/client-s3": "npm:@aws-sdk/client-s3@^3.821.0",
- "@aws-sdk/client-sesv2": "npm:@aws-sdk/client-sesv2@^3.821.0",
- "@db/sqlite": "jsr:@db/sqlite@^0.12.0",
- "@hono/zod-validator": "npm:@hono/zod-validator@^0.7.0",
- "@smithy/fetch-http-handler": "npm:@smithy/fetch-http-handler@^5.0.4",
- "@std/cli": "jsr:@std/cli@^1.0.19",
- "@std/csv": "jsr:@std/csv@^1.0.6",
- "@std/encoding": "jsr:@std/encoding@^1.0.10",
- "@std/expect": "jsr:@std/expect@^1.0.16",
- "@std/io": "jsr:@std/io@^0.225.2",
- "@std/path": "jsr:@std/path@^1.1.0",
- "@std/testing": "jsr:@std/testing@^1.0.13",
- "email-addresses": "npm:email-addresses@^5.0.0",
- "hono": "npm:hono@^4.7.11",
- "kysely": "npm:kysely@^0.28.2",
- "zod": "npm:zod@^3.25.48"
- }
-}
diff --git a/deno/mail-relay/dovecot/deliver.ts b/deno/mail-relay/dovecot/deliver.ts
deleted file mode 100644
index 92bdc58..0000000
--- a/deno/mail-relay/dovecot/deliver.ts
+++ /dev/null
@@ -1,102 +0,0 @@
-import { basename } from "@std/path";
-
-import config from "../config.ts";
-import log from "../log.ts";
-import {
- Mail,
- MailDeliverContext,
- MailDeliverer,
- RecipientFromHeadersHook,
-} from "../mail.ts";
-
-export class DovecotMailDeliverer extends MailDeliverer {
- readonly name = "dovecot";
-
- constructor() {
- super();
- this.preHooks.push(
- new RecipientFromHeadersHook(),
- );
- }
-
- protected override async doDeliver(
- mail: Mail,
- context: MailDeliverContext,
- ): Promise<void> {
- const ldaPath = config.get("ldaPath");
- const ldaBinName = basename(ldaPath);
- const utf8Stream = mail.toUtf8Bytes();
-
- const recipients = [...context.recipients];
-
- if (recipients.length === 0) {
- context.result.message =
- "Failed to deliver to dovecot, no recipients are specified.";
- return;
- }
-
- log.info(`Deliver to dovecot users: ${recipients.join(", ")}.`);
-
- for (const recipient of recipients) {
- try {
- const commandArgs = ["-d", recipient];
- log.info(
- `Run ${ldaBinName} ${commandArgs.join(" ")}...`,
- );
-
- const ldaCommand = new Deno.Command(ldaPath, {
- args: commandArgs,
- stdin: "piped",
- stdout: "piped",
- stderr: "piped",
- });
-
- const ldaProcess = ldaCommand.spawn();
- using logFiles = await log.openLogForProgram(ldaBinName);
- ldaProcess.stdout.pipeTo(logFiles.stdout.writable);
- ldaProcess.stderr.pipeTo(logFiles.stderr.writable);
-
- const stdinWriter = ldaProcess.stdin.getWriter();
- await stdinWriter.write(utf8Stream);
- await stdinWriter.close();
-
- const status = await ldaProcess.status;
-
- if (status.success) {
- context.result.recipients.set(recipient, {
- kind: "done",
- message: `${ldaBinName} exited with success.`,
- });
- } else {
- let message = `${ldaBinName} exited with error code ${status.code}`;
-
- if (status.signal != null) {
- message += ` (signal ${status.signal})`;
- }
-
- // https://doc.dovecot.org/main/core/man/dovecot-lda.1.html
- switch (status.code) {
- case 67:
- message += ", recipient user not known";
- break;
- case 75:
- message += ", temporary error";
- break;
- }
-
- message += ".";
-
- context.result.recipients.set(recipient, { kind: "fail", message });
- }
- } catch (cause) {
- context.result.recipients.set(recipient, {
- kind: "fail",
- message: "An error is thrown when running lda: " + cause,
- cause,
- });
- }
- }
-
- log.info("Done handling all recipients.");
- }
-}
diff --git a/deno/mail-relay/dumb-smtp-server.ts b/deno/mail-relay/dumb-smtp-server.ts
deleted file mode 100644
index 6c63f5c..0000000
--- a/deno/mail-relay/dumb-smtp-server.ts
+++ /dev/null
@@ -1,119 +0,0 @@
-import config from "./config.ts";
-import log from "./log.ts";
-import { MailDeliverer } from "./mail.ts";
-
-const CRLF = "\r\n";
-
-const SERVER_NAME = `[${config.SMTP_HOST}]:${config.SMTP_PORT}`;
-
-const RESPONSES = {
- "READY": `220 ${SERVER_NAME} SMTP Ready`,
- "EHLO": `250 ${SERVER_NAME}`,
- "MAIL": "250 2.1.0 Sender OK",
- "RCPT": "250 2.1.5 Recipient OK",
- "DATA": "354 Start mail input; end with <CRLF>.<CRLF>",
- "QUIT": `211 2.0.0 ${SERVER_NAME} closing connection`,
- "INVALID": "500 5.5.1 Error: command not recognized",
-} as const;
-
-export class DumbSmtpServer {
- #deliverer: MailDeliverer;
-
- constructor(deliverer: MailDeliverer) {
- this.#deliverer = deliverer;
- }
-
- async #handleConnection(conn: Deno.Conn) {
- using disposeStack = new DisposableStack();
- disposeStack.defer(() => {
- log.info("Close smtp session tcp connection.");
- conn.close();
- });
- const writer = conn.writable.getWriter();
- disposeStack.defer(() => writer.releaseLock());
- const reader = conn.readable.getReader();
- disposeStack.defer(() => reader.releaseLock());
-
- const [decoder, encoder] = [new TextDecoder(), new TextEncoder()];
- const decode = (data: Uint8Array) => decoder.decode(data);
- const send = async (s: string) =>
- await writer.write(encoder.encode(s + CRLF));
-
- let buffer: string = "";
- let rawMail: string | null = null;
-
- await send(RESPONSES["READY"]);
-
- while (true) {
- const { value, done } = await reader.read();
- if (done) break;
-
- buffer += decode(value);
-
- while (true) {
- const eolPos = buffer.indexOf(CRLF);
- if (eolPos === -1) break;
-
- const line = buffer.slice(0, eolPos);
- buffer = buffer.slice(eolPos + CRLF.length);
-
- if (rawMail == null) {
- log.info("Smtp server received line:", line);
- const upperLine = line.toUpperCase();
- if (upperLine.startsWith("EHLO") || upperLine.startsWith("HELO")) {
- await send(RESPONSES["EHLO"]);
- } else if (upperLine.startsWith("MAIL FROM:")) {
- await send(RESPONSES["MAIL"]);
- } else if (upperLine.startsWith("RCPT TO:")) {
- await send(RESPONSES["RCPT"]);
- } else if (upperLine === "DATA") {
- await send(RESPONSES["DATA"]);
- log.info("Begin to receive mail data...");
- rawMail = "";
- } else if (upperLine === "QUIT") {
- await send(RESPONSES["QUIT"]);
- return;
- } else {
- log.warn("Smtp server command unrecognized:", line);
- await send(RESPONSES["INVALID"]);
- return;
- }
- } else {
- if (line === ".") {
- try {
- log.info("Done receiving mail data, begin to relay...");
- const { message } = await this.#deliverer.deliverRaw(rawMail);
- await send(`250 2.6.0 ${message}`);
- rawMail = null;
- log.info("Done SMTP mail session.");
- } catch (err) {
- log.info(err);
- await send("554 5.3.0 Error: check server log");
- return;
- }
- } else {
- const dataLine = line.startsWith("..") ? line.slice(1) : line;
- rawMail += dataLine + CRLF;
- }
- }
- }
- }
- }
-
- async serve() {
- const listener = Deno.listen({
- hostname: config.SMTP_HOST,
- port: config.SMTP_PORT,
- });
- listener.unref();
- log.info(`Dumb SMTP server starts running on port ${config.SMTP_PORT}.`);
-
- for await (const conn of listener) {
- try {
- await this.#handleConnection(conn);
- } catch (cause) {
- log.error("One smtp connection session throws an error " + cause);
- }
- }
- }
-}
diff --git a/deno/mail-relay/log.ts b/deno/mail-relay/log.ts
deleted file mode 100644
index ce27eca..0000000
--- a/deno/mail-relay/log.ts
+++ /dev/null
@@ -1,116 +0,0 @@
-import { join } from "@std/path";
-import { toWritableStream, Writer } from "@std/io";
-
-import "./better-js.ts";
-
-export interface LogOptions {
- time?: Date;
- error?: boolean;
-}
-
-export type LogFile = Pick<Deno.FsFile, "writable"> & Disposable;
-
-export class Log {
- #path: string | null = null;
-
- #wrapWriter(writer: Writer): LogFile {
- return {
- writable: toWritableStream(writer, { autoClose: false }),
- [Symbol.dispose]() {},
- };
- }
-
- #stdoutWrapper: LogFile = this.#wrapWriter(Deno.stdout);
- #stderrWrapper: LogFile = this.#wrapWriter(Deno.stderr);
-
- constructor() {
- }
-
- get path() {
- return this.#path;
- }
-
- set path(path) {
- this.#path = path;
- if (path != null) {
- Deno.mkdirSync(path, { recursive: true });
- }
- }
-
- infoOrError(isError: boolean, ...args: unknown[]) {
- this[isError ? "error" : "info"].call(this, ...args);
- }
-
- info(...args: unknown[]) {
- console.log(...args);
- }
-
- warn(...args: unknown[]) {
- console.warn(...args);
- }
-
- error(...args: unknown[]) {
- console.error(...args);
- }
-
- #extractOptions(options?: LogOptions): Required<LogOptions> {
- return {
- time: options?.time ?? new Date(),
- error: options?.error ?? false,
- };
- }
-
- async openLog(
- prefix: string,
- suffix: string,
- options?: LogOptions,
- ): Promise<LogFile> {
- if (prefix.includes("/")) {
- throw new Error(`Log file prefix ${prefix} contains '/'.`);
- }
- if (suffix.includes("/")) {
- throw new Error(`Log file suffix ${suffix} contains '/'.`);
- }
-
- const { time, error } = this.#extractOptions(options);
- if (this.#path == null) {
- return error ? this.#stderrWrapper : this.#stdoutWrapper;
- }
-
- const logPath = join(
- this.#path,
- `${prefix}-${time.toFileNameString()}-${suffix}`,
- );
- return await Deno.open(logPath, {
- read: false,
- write: true,
- append: true,
- create: true,
- });
- }
-
- async openLogForProgram(
- program: string,
- options?: Omit<LogOptions, "error">,
- ): Promise<{ stdout: LogFile; stderr: LogFile } & Disposable> {
- const stdout = await this.openLog(program, "stdout", {
- ...options,
- error: false,
- });
- const stderr = await this.openLog(program, "stderr", {
- ...options,
- error: true,
- });
- return {
- stdout,
- stderr,
- [Symbol.dispose]: () => {
- stdout[Symbol.dispose]();
- stderr[Symbol.dispose]();
- },
- };
- }
-}
-
-const log = new Log();
-export default log;
diff --git a/deno/mail-relay/mail.test.ts b/deno/mail-relay/mail.test.ts
deleted file mode 100644
index ee275af..0000000
--- a/deno/mail-relay/mail.test.ts
+++ /dev/null
@@ -1,143 +0,0 @@
-import { describe, it } from "@std/testing/bdd";
-import { expect, fn } from "@std/expect";
-
-import { Mail, MailDeliverContext, MailDeliverer } from "./mail.ts";
-
-const mockDate = "Fri, 02 May 2025 08:33:02 +0000";
-const mockMessageId = "mock-message-id@from.mock";
-const mockMessageId2 = "mock-message-id-2@from.mock";
-const mockFromAddress = "mock@from.mock";
-const mockCcAddress = "mock@cc.mock";
-const mockBodyStr = `This is body content.
-Line 2 ${mockMessageId2}
-
-Line 4`;
-const mockHeaders = [
- ["Content-Disposition", "inline"],
- ["Content-Transfer-Encoding", "quoted-printable"],
- ["MIME-Version", "1.0"],
- ["X-Mailer", "MIME-tools 5.509 (Entity 5.509)"],
- ["Content-Type", "text/plain; charset=utf-8"],
- ["From", `"Mock From" <${mockFromAddress}>`],
- [
- "To",
- `"John \\"Big\\" Doe" <john@example.com>, "Alice (Work)" <alice+work@example.com>,
- undisclosed-recipients:;, "Group: Team" <team@company.com>,
- "Escaped, Name" <escape@test.com>, just@email.com,
- "Comment (This is valid)" <comment@domain.net>,
- "Odd @Chars" <weird!#$%'*+-/=?^_\`{|}~@char-test.com>,
- "Non-ASCII 用户" <user@例子.中国>,
- admin@[192.168.1.1]`,
- ],
- ["CC", `Mock CC <${mockCcAddress}>`],
- ["Subject", "A very long mock\n subject"],
- ["Message-ID", `<${mockMessageId}>`],
- ["Date", mockDate],
-];
-const mockHeaderStr = mockHeaders.map((h) => h[0] + ": " + h[1]).join("\n");
-const mockMailStr = mockHeaderStr + "\n\n" + mockBodyStr;
-const mockCrlfMailStr = mockMailStr.replaceAll("\n", "\r\n");
-const mockToAddresses = [
- "john@example.com",
- "alice+work@example.com",
- "team@company.com",
- "escape@test.com",
- "just@email.com",
- "comment@domain.net",
- "weird!#$%'*+-/=?^_`{|}~@char-test.com",
- "user@例子.中国",
- "admin@[192.168.1.1]",
-];
-
-describe("Mail", () => {
- it("simple parse", () => {
- const parsed = new Mail(mockMailStr).startSimpleParse().sections();
- expect(parsed.header).toEqual(mockHeaderStr);
- expect(parsed.body).toEqual(mockBodyStr);
- expect(parsed.sep).toBe("\n");
- expect(parsed.eol).toBe("\n");
- });
-
- it("simple parse crlf", () => {
- const parsed = new Mail(mockCrlfMailStr).startSimpleParse().sections();
- expect(parsed.sep).toBe("\r\n");
- expect(parsed.eol).toBe("\r\n");
- });
-
- it("simple parse date", () => {
- expect(new Mail(mockMailStr).startSimpleParse().sections().headers().date())
- .toEqual(new Date(mockDate));
- });
-
- it("simple parse headers", () => {
- expect(
- new Mail(mockMailStr).startSimpleParse().sections().headers(),
- ).toEqual(mockHeaders.map(
- (h) => [h[0], " " + h[1].replaceAll("\n", "")],
- ));
- });
-
- it("append headers", () => {
- const mail = new Mail(mockMailStr);
- const mockMoreHeaders = [["abc", "123"], ["def", "456"]] satisfies [
- string,
- string,
- ][];
- mail.appendHeaders(mockMoreHeaders);
-
- expect(mail.raw).toBe(
- mockHeaderStr + "\n" +
- mockMoreHeaders.map((h) => h[0] + ": " + h[1]).join("\n") +
- "\n\n" + mockBodyStr,
- );
- });
-
- it("parse recipients", () => {
- const mail = new Mail(mockMailStr);
- expect([...mail.startSimpleParse().sections().headers().recipients()])
- .toEqual([
- ...mockToAddresses,
- mockCcAddress,
- ]);
- expect([
- ...mail.startSimpleParse().sections().headers().recipients({
- domain: "example.com",
- }),
- ]).toEqual([
- ...mockToAddresses,
- mockCcAddress,
- ].filter((a) => a.endsWith("example.com")));
- });
-
- it("find all addresses", () => {
- const mail = new Mail(mockMailStr);
- expect(mail.simpleFindAllAddresses()).toEqual([
- "mock@from.mock",
- "john@example.com",
- "alice+work@example.com",
- "team@company.com",
- "escape@test.com",
- "just@email.com",
- "comment@domain.net",
- "mock@cc.mock",
- "mock-message-id@from.mock",
- "mock-message-id-2@from.mock",
- ]);
- });
-});
-
-describe("MailDeliverer", () => {
- class MockMailDeliverer extends MailDeliverer {
- name = "mock";
- override doDeliver = fn((_: Mail, ctx: MailDeliverContext) => {
- ctx.result.recipients.set("*", { kind: "done", message: "success" });
- return Promise.resolve();
- }) as MailDeliverer["doDeliver"];
- }
- const mockDeliverer = new MockMailDeliverer();
-
- it("deliver success", async () => {
- await mockDeliverer.deliverRaw(mockMailStr);
- expect(mockDeliverer.doDeliver).toHaveBeenCalledTimes(1);
- });
-});
diff --git a/deno/mail-relay/mail.ts b/deno/mail-relay/mail.ts
deleted file mode 100644
index af0df40..0000000
--- a/deno/mail-relay/mail.ts
+++ /dev/null
@@ -1,340 +0,0 @@
-import { encodeBase64 } from "@std/encoding/base64";
-import { parse } from "@std/csv/parse";
-import emailAddresses from "email-addresses";
-
-import log from "./log.ts";
-import config from "./config.ts";
-
-class MailSimpleParseError extends Error {
- constructor(
- message: string,
- public readonly text: string,
- public readonly lineNumber?: number,
- options?: ErrorOptions,
- ) {
- if (lineNumber != null) message += `(at line ${lineNumber})`;
- super(message, options);
- }
-}
-
-class MailSimpleParsedHeaders extends Array<[key: string, value: string]> {
- getFirst(fieldKey: string): string | undefined {
- for (const [key, value] of this) {
- if (key.toLowerCase() === fieldKey.toLowerCase()) return value;
- }
- return undefined;
- }
-
- messageId(): string | undefined {
- const messageIdField = this.getFirst("message-id");
- if (messageIdField == null) return undefined;
-
- const match = messageIdField.match(/\<(.*?)\>/);
- if (match != null) {
- return match[1];
- } else {
- console.warn("Invalid message-id header of mail: ", messageIdField);
- return undefined;
- }
- }
-
- date(invalidToUndefined: boolean = true): Date | undefined {
- const dateField = this.getFirst("date");
- if (dateField == null) return undefined;
-
- const date = new Date(dateField);
- if (invalidToUndefined && isNaN(date.getTime())) {
- log.warn(`Invalid date string (${dateField}) found in header.`);
- return undefined;
- }
- return date;
- }
-
- recipients(options?: { domain?: string; headers?: string[] }): Set<string> {
- const domain = options?.domain;
- const headers = options?.headers ?? ["to", "cc", "bcc", "x-original-to"];
- const recipients = new Set<string>();
- for (const [key, value] of this) {
- if (headers.includes(key.toLowerCase())) {
- emailAddresses.parseAddressList(value)?.flatMap((a) =>
- a.type === "mailbox" ? a : a.addresses
- )?.forEach(({ address }) => {
- if (domain == null || address.endsWith(domain)) {
- recipients.add(address);
- }
- });
- }
- }
- return recipients;
- }
-}
-
-class MailSimpleParsedSections {
- header: string;
- body: string;
- eol: string;
- sep: string;
-
- constructor(raw: string) {
- const twoEolMatch = raw.match(/(\r?\n)(\r?\n)/);
- if (twoEolMatch == null) {
- throw new MailSimpleParseError(
- "No header/body section separator (2 successive EOLs) found.",
- raw,
- );
- }
-
- const [eol, sep] = [twoEolMatch[1], twoEolMatch[2]];
-
- if (eol !== sep) {
- log.warn("Different EOLs (\\r\\n, \\n) found.");
- }
-
- this.header = raw.slice(0, twoEolMatch.index!);
- this.body = raw.slice(twoEolMatch.index! + eol.length + sep.length);
- this.eol = eol;
- this.sep = sep;
- }
-
- headers(): MailSimpleParsedHeaders {
- const headers = new MailSimpleParsedHeaders();
-
- let field: string | null = null;
- let lineNumber = 1;
-
- const handleField = () => {
- if (field == null) return;
- const sepPos = field.indexOf(":");
- if (sepPos === -1) {
- throw new MailSimpleParseError(
- "No ':' in the header field.",
- this.header,
- lineNumber,
- );
- }
- headers.push([field.slice(0, sepPos).trim(), field.slice(sepPos + 1)]);
- field = null;
- };
-
- for (const line of this.header.trimEnd().split(/\r?\n|\r/)) {
- if (line.match(/^\s/)) {
- if (field == null) {
- throw new MailSimpleParseError(
- "Header field starts with a space.",
- this.header,
- lineNumber,
- );
- }
- field += line;
- } else {
- handleField();
- field = line;
- }
- lineNumber += 1;
- }
-
- handleField();
-
- return headers;
- }
-}
-
-export class Mail {
- constructor(public raw: string) {}
-
- toUtf8Bytes(): Uint8Array {
- const utf8Encoder = new TextEncoder();
- return utf8Encoder.encode(this.raw);
- }
-
- toBase64(): string {
- return encodeBase64(this.raw);
- }
-
- startSimpleParse() {
- return { sections: () => new MailSimpleParsedSections(this.raw) };
- }
-
- simpleFindAllAddresses(): string[] {
- const re = /,?\<?([a-z0-9_'+\-\.]+\@[a-z0-9_'+\-\.]+)\>?,?/ig
- return [...this.raw.matchAll(re)].map(m => m[1])
- }
-
- // TODO: Add folding.
- appendHeaders(headers: [key: string, value: string][]) {
- const { header, body, sep, eol } = this.startSimpleParse().sections();
-
- this.raw = header + eol +
- headers.map(([k, v]) => `${k}: ${v}`).join(eol) + eol + sep +
- body;
- }
-}
-
-export type MailDeliverResultKind = "done" | "fail";
-
-export interface MailDeliverRecipientResult {
- kind: MailDeliverResultKind;
- message: string;
- cause?: unknown;
-}
-
-export class MailDeliverResult {
- message: string = "";
- recipients: Map<string, MailDeliverRecipientResult> = new Map();
-
- constructor(public mail: Mail) {}
-
- hasError(): boolean {
- return this.recipients.size === 0 ||
- this.recipients.values().some((r) => r.kind !== "done");
- }
-
- [Symbol.for("Deno.customInspect")]() {
- return [
- `message: ${this.message}`,
- ...this.recipients.entries().map(([recipient, result]) =>
- `${recipient} [${result.kind}]: ${result.message}`
- ),
- ].join("\n");
- }
-}
-
-export class MailDeliverContext {
- readonly recipients: Set<string> = new Set();
- readonly result;
-
- constructor(public mail: Mail) {
- this.result = new MailDeliverResult(this.mail);
- }
-}
-
-export interface MailDeliverHook {
- callback(context: MailDeliverContext): Promise<void>;
-}
-
-export abstract class MailDeliverer {
- abstract readonly name: string;
- preHooks: MailDeliverHook[] = [];
- postHooks: MailDeliverHook[] = [];
-
- protected abstract doDeliver(
- mail: Mail,
- context: MailDeliverContext,
- ): Promise<void>;
-
- async deliverRaw(rawMail: string) {
- return await this.deliver({ mail: new Mail(rawMail) });
- }
-
- async deliver(
- options: { mail: Mail; recipients?: string[] },
- ): Promise<MailDeliverResult> {
- log.info(`Begin to deliver mail via ${this.name}...`);
-
- const context = new MailDeliverContext(options.mail);
- options.recipients?.forEach((r) => context.recipients.add(r));
-
- for (const hook of this.preHooks) {
- await hook.callback(context);
- }
-
- await this.doDeliver(context.mail, context);
-
- for (const hook of this.postHooks) {
- await hook.callback(context);
- }
-
- log.info("Deliver result:");
- log.info(context.result);
-
- if (context.result.hasError()) {
- throw new Error("Mail failed to deliver.");
- }
-
- return context.result;
- }
-}
-
-export abstract class SyncMailDeliverer extends MailDeliverer {
- #last: Promise<void> = Promise.resolve();
-
- override async deliver(
- options: { mail: Mail; recipients?: string[] },
- ): Promise<MailDeliverResult> {
- log.info("The mail deliverer is sync. Wait for last delivering done...");
- await this.#last;
- const result = super.deliver(options);
- this.#last = result.then(() => {}, () => {});
- return result;
- }
-}
-
-export class RecipientFromHeadersHook implements MailDeliverHook {
- callback(context: MailDeliverContext) {
- if (context.recipients.size !== 0) {
- log.warn(
- "Recipients are already filled. Won't set them with ones in headers.",
- );
- } else {
- context.mail.startSimpleParse().sections().headers().recipients({
- domain: config.get("mailDomain"),
- }).forEach((r) => context.recipients.add(r));
-
- log.info(
- "Recipients found from mail headers: ",
- [...context.recipients].join(" "),
- );
- }
- return Promise.resolve();
- }
-}
-
-export class FallbackRecipientHook implements MailDeliverHook {
- constructor(public fallback: Set<string> = new Set()) {}
-
- callback(context: MailDeliverContext) {
- if (context.recipients.size === 0) {
- log.info(
- "No recipients, fill with fallback: ",
- [...this.fallback].join(" "),
- );
- this.fallback.forEach((a) => context.recipients.add(a));
- }
- return Promise.resolve();
- }
-}
-
-export class AliasRecipientMailHook implements MailDeliverHook {
- #aliasFile;
-
- constructor(aliasFile: string) {
- this.#aliasFile = aliasFile;
- }
-
- async #parseAliasFile(): Promise<Map<string, string>> {
- const result = new Map();
- if ((await Deno.stat(this.#aliasFile)).isFile) {
- log.info(`Found recipients alias file: ${this.#aliasFile}.`);
- const text = await Deno.readTextFile(this.#aliasFile);
- const csv = parse(text);
- for (const [real, ...aliases] of csv) {
- aliases.forEach((a) => result.set(a, real));
- }
- }
- return result;
- }
-
- async callback(context: MailDeliverContext) {
- const aliases = await this.#parseAliasFile();
- for (const recipient of [...context.recipients]) {
- const realRecipients = aliases.get(recipient);
- if (realRecipients != null) {
- log.info(
- `Recipient alias resolved: ${recipient} => ${realRecipients}.`,
- );
- context.recipients.delete(recipient);
- context.recipients.add(realRecipients);
- }
- }
- }
-}
generated by cgit v1.2.3 (git 2.46.0) at 2025-12-15 03:24:08 +0000