Initial commit

src/sms_handler/server.py

@@ -0,0 +1,85 @@
+#!/usr/bin/env python
+__author__ = "Philippe May <phil.dev@philome.mooo.com>"
+__license__ = "BSD"
+__doc__ = "Listen to messages from the SMS Forwarder app on Android, and send mail."
+
+import os
+import textwrap
+from datetime import datetime
+from socket import gethostname
+from email.message import EmailMessage
+
+from fastapi import FastAPI
+from aiosmtplib import send
+from pydantic import BaseModel, Field, EmailStr
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+USER = os.environ.get("USER", "root")
+HOST_NAME = gethostname()
+
+
+## Definition of settings:
+class MailSettings(BaseSettings):
+    model_config = SettingsConfigDict(env_prefix="SMS_HANDLER_MAIL_")
+    enable: bool = True
+    sender: str = f"{USER}@{HOST_NAME}"
+    to: str = f"{USER}@{HOST_NAME}"
+    server: str = "localhost"
+    server_port: int = 25
+    server_start_tls: bool = False
+    template: str = textwrap.dedent(
+        """\
+        {text}
+        ---
+        From: {from}
+        Sent: {sentStamp:%c}
+        Received: {receivedStamp:%c}
+        Sim: {sim}
+        """
+    )
+
+
+class Settings(BaseSettings):
+    model_config = SettingsConfigDict(env_prefix="SMS_HANDLER_")
+    mail: MailSettings = MailSettings()
+
+
+class SmsAlert(BaseModel):
+    from_: str = Field(alias="from")
+    text: str
+    sentStamp: datetime
+    receivedStamp: datetime
+    sim: str
+
+
+settings = Settings()
+app = FastAPI()
+
+
+def send_mail(smsAlert: SmsAlert):
+    msg = EmailMessage()
+    msg["Subject"] = f"SMS from {smsAlert.from_}"
+    msg["From"] = settings.mail.sender
+    msg["To"] = settings.mail.to
+    fmt = dict(smsAlert)
+    fmt["from"] = fmt.pop("from_")
+    msg.set_content(settings.mail.template.format_map(fmt))
+    return send(
+        msg,
+        hostname=settings.mail.server,
+        port=settings.mail.server_port,
+        start_tls=settings.mail.server_start_tls,
+    )
+
+
+@app.post("/handle-sms")
+async def handle_sms(smsAlert: SmsAlert):
+    if settings.mail.enable:
+        await send_mail(smsAlert)
+    return "OK"
+
+
+def main():
+    from uvicorn import run
+
+    run(app, host="0.0.0.0", port=8025)