1 files changed, 0 insertions, 122 deletions
diff --git a/services/docker/mail-server/relay/dumb-smtp-server.ts b/services/docker/mail-server/relay/dumb-smtp-server.ts
deleted file mode 100644
index af2a69f..0000000
--- a/services/docker/mail-server/relay/dumb-smtp-server.ts
+++ /dev/null
@@ -1,122 +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 #send(rawMail: string): Promise<{ message: string }> {
-    const mail = await this.#deliverer.deliverRaw(rawMail);
-    return {
-      message: mail.deliverMessage ?? "Success",
-    };
-  }
-
-  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...");
-              const { message } = await this.#send(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 running on port ${config.SMTP_PORT}.`);
-
-    for await (const conn of listener) {
-      await this.#handleConnection(conn);
-    }
-  }
-}