Replace Mailslurper with script printing to cmdline

docker-compose.dev.yml

@@ -126,9 +126,6 @@ services:
       dev:
         aliases:
           - mail
-    ports:
-      - "5005:5005"
-      - "5006:5006"
 
 volumes:
   home:

docker/mail.Dockerfile

@@ -1,13 +1,8 @@
-FROM golang:rc-alpine
-RUN apk add --no-cache git
-RUN apk add --no-cache gcc
-RUN apk add --no-cache musl-dev
-RUN git clone "https://github.com/jamillosantos/mailslurper.git" /opt/mailslurper
-WORKDIR /opt/mailslurper/cmd/mailslurper
-RUN go get github.com/mjibson/esc
-RUN cd /opt/mailslurper/cmd/mailslurper
-COPY ./mailslurper.conf config.json
-RUN go get
-RUN go generate
-RUN go build
-ENTRYPOINT ["/opt/mailslurper/cmd/mailslurper/mailslurper"]
+FROM debian:unstable
+
+RUN apt-get update && apt-get install -y python3 python3-aiosmtpd python3-termcolor
+
+WORKDIR /opt/mail
+COPY ./mail.py mail.py
+
+ENTRYPOINT ["python3", "mail.py"]

docker/mail/mail.py

@@ -0,0 +1,49 @@
+import asyncio
+import email
+import email.policy
+import sys
+
+from aiosmtpd.controller import Controller
+from termcolor import cprint
+
+
+class PycroftDebugging:
+    COLOR_HEADER = "blue"
+    COLOR_CONTENT_BORDER = "magenta"
+
+    async def handle_DATA(self, server, session, envelope):
+        message = email.message_from_bytes(envelope.content, policy=email.policy.default)
+
+        # Print headers
+        for key, value in message.items():
+            cprint(f"{key}: {value}", self.COLOR_HEADER)
+
+        # Print message parts, i.e. text/plain, text/html
+        for part in message.walk():
+            try:
+                content = part.get_content()
+            except KeyError:
+                continue
+
+            print()
+            content_type = part.get_content_type()
+            cprint(content_type, self.COLOR_CONTENT_BORDER)
+            cprint("⌄" * len(content_type), self.COLOR_CONTENT_BORDER)
+            print(content)
+            cprint("⌃" * len(content_type), self.COLOR_CONTENT_BORDER)
+
+        print()
+        sys.stdout.flush()
+
+        return "250 Message accepted for delivery"
+
+
+controller = Controller(PycroftDebugging(), hostname="0.0.0.0", port=2500)
+controller.start()
+
+loop = asyncio.get_event_loop()
+try:
+    loop.run_forever()
+finally:
+    loop.close()
+    controller.stop()

justfile

@@ -129,3 +129,7 @@ _stop_all:
 
 _up +containers:
     {{ drc }} up --wait {{ containers }}
+
+show_emails:
+    {{ drc }} --progress=none up -d dev-celery-worker dev-mail
+    {{ drc }} logs --no-log-prefix -f dev-mail