Add 20 honeypot services: email, DB, ICS, cloud, IoT, network protocols

Tier 1 (upstream images): telnet (cowrie), smtp (mailoney),
elasticsearch (elasticpot), conpot (Modbus/S7/SNMP ICS).

Tier 2 (custom asyncio honeypots): pop3, imap, mysql, mssql, redis,
mongodb, postgres, ldap, vnc, docker_api, k8s, sip, mqtt, llmnr, snmp,
tftp — each with Dockerfile, entrypoint, and protocol-accurate
handshake/credential capture.

Adds 256 pytest cases covering registration, compose fragments,
LOG_TARGET propagation, and Dockerfile presence for all 25 services.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

templates/mysql/Dockerfile

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+FROM debian:bookworm-slim
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    python3 \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY mysql_honeypot.py /opt/mysql_honeypot.py
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+EXPOSE 3306
+ENTRYPOINT ["/entrypoint.sh"]

templates/mysql/entrypoint.sh

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+#!/bin/bash
+set -e
+exec python3 /opt/mysql_honeypot.py

templates/mysql/mysql_honeypot.py

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+#!/usr/bin/env python3
+"""
+MySQL honeypot.
+Sends a realistic MySQL 5.7 server handshake, reads the client login
+packet, extracts username, then closes with Access Denied. Logs auth
+attempts as JSON.
+"""
+
+import asyncio
+import json
+import os
+import socket
+import struct
+from datetime import datetime, timezone
+
+HONEYPOT_NAME = os.environ.get("HONEYPOT_NAME", "dbserver")
+LOG_TARGET = os.environ.get("LOG_TARGET", "")
+
+# Minimal MySQL 5.7 server greeting (protocol v10)
+_GREETING = (
+    b"\x0a"                              # protocol version 10
+    b"5.7.38-honeypot\x00"              # server version + NUL
+    b"\x01\x00\x00\x00"                 # connection id = 1
+    b"\x70\x76\x21\x6d\x61\x67\x69\x63"  # auth-plugin-data part 1
+    b"\x00"                              # filler
+    b"\xff\xf7"                          # capability flags low
+    b"\x21"                              # charset utf8
+    b"\x02\x00"                          # status flags
+    b"\xff\x81"                          # capability flags high
+    b"\x15"                              # auth plugin data length
+    b"\x00" * 10                         # reserved
+    b"\x21\x4f\x7d\x25\x3e\x55\x4d\x7c\x67\x75\x5e\x31\x00"  # auth part 2
+    b"mysql_native_password\x00"        # auth plugin name
+)
+
+
+def _make_packet(payload: bytes, seq: int = 0) -> bytes:
+    length = len(payload)
+    return struct.pack("<I", length)[:3] + bytes([seq]) + payload
+
+
+def _forward(event: dict) -> None:
+    if not LOG_TARGET:
+        return
+    try:
+        host, port = LOG_TARGET.rsplit(":", 1)
+        with socket.create_connection((host, int(port)), timeout=3) as s:
+            s.sendall((json.dumps(event) + "\n").encode())
+    except Exception:
+        pass
+
+
+def _log(event_type: str, **kwargs) -> None:
+    event = {
+        "ts": datetime.now(timezone.utc).isoformat(),
+        "service": "mysql",
+        "host": HONEYPOT_NAME,
+        "event": event_type,
+        **kwargs,
+    }
+    print(json.dumps(event), flush=True)
+    _forward(event)
+
+
+class MySQLProtocol(asyncio.Protocol):
+    def __init__(self):
+        self._transport = None
+        self._peer = None
+        self._buf = b""
+        self._greeted = False
+
+    def connection_made(self, transport):
+        self._transport = transport
+        self._peer = transport.get_extra_info("peername", ("?", 0))
+        _log("connect", src=self._peer[0], src_port=self._peer[1])
+        transport.write(_make_packet(_GREETING, seq=0))
+        self._greeted = True
+
+    def data_received(self, data):
+        self._buf += data
+        # MySQL packets: 3-byte length + 1-byte seq + payload
+        while len(self._buf) >= 4:
+            length = struct.unpack("<I", self._buf[:3] + b"\x00")[0]
+            if len(self._buf) < 4 + length:
+                break
+            payload = self._buf[4:4 + length]
+            self._buf = self._buf[4 + length:]
+            self._handle_packet(payload)
+
+    def _handle_packet(self, payload: bytes):
+        if not payload:
+            return
+        # Login packet: capability flags (4), max_packet (4), charset (1), reserved (23), username (NUL-terminated)
+        if len(payload) > 32:
+            try:
+                # skip capability(4) + max_pkt(4) + charset(1) + reserved(23) = 32 bytes
+                username_start = 32
+                nul = payload.index(b"\x00", username_start)
+                username = payload[username_start:nul].decode(errors="replace")
+            except (ValueError, IndexError):
+                username = "<parse_error>"
+            _log("auth", src=self._peer[0], username=username)
+        # Send Access Denied error
+        err = b"\xff" + struct.pack("<H", 1045) + b"#28000Access denied for user\x00"
+        self._transport.write(_make_packet(err, seq=2))
+        self._transport.close()
+
+    def connection_lost(self, exc):
+        _log("disconnect", src=self._peer[0] if self._peer else "?")
+
+
+async def main():
+    _log("startup", msg=f"MySQL honeypot starting as {HONEYPOT_NAME}")
+    loop = asyncio.get_running_loop()
+    server = await loop.create_server(MySQLProtocol, "0.0.0.0", 3306)
+    async with server:
+        await server.serve_forever()
+
+
+if __name__ == "__main__":
+    asyncio.run(main())