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/ldap/Dockerfile

@@ -0,0 +1,12 @@
+FROM debian:bookworm-slim
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    python3 \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY ldap_honeypot.py /opt/ldap_honeypot.py
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+EXPOSE 389 636
+ENTRYPOINT ["/entrypoint.sh"]

templates/ldap/entrypoint.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+set -e
+exec python3 /opt/ldap_honeypot.py

templates/ldap/ldap_honeypot.py

@@ -0,0 +1,165 @@
+#!/usr/bin/env python3
+"""
+LDAP honeypot.
+Parses BER-encoded BindRequest messages, logs DN and password, returns an
+invalidCredentials error. Logs all interactions as JSON.
+"""
+
+import asyncio
+import json
+import os
+import socket
+from datetime import datetime, timezone
+
+HONEYPOT_NAME = os.environ.get("HONEYPOT_NAME", "ldapserver")
+LOG_TARGET = os.environ.get("LOG_TARGET", "")
+
+
+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": "ldap",
+        "host": HONEYPOT_NAME,
+        "event": event_type,
+        **kwargs,
+    }
+    print(json.dumps(event), flush=True)
+    _forward(event)
+
+
+def _ber_length(data: bytes, pos: int):
+    """Return (length, next_pos)."""
+    b = data[pos]
+    if b < 0x80:
+        return b, pos + 1
+    n = b & 0x7f
+    length = int.from_bytes(data[pos + 1:pos + 1 + n], "big")
+    return length, pos + 1 + n
+
+
+def _ber_string(data: bytes, pos: int):
+    """Skip tag byte, read BER length, return (string, next_pos)."""
+    pos += 1  # skip tag
+    length, pos = _ber_length(data, pos)
+    return data[pos:pos + length].decode(errors="replace"), pos + length
+
+
+def _parse_bind_request(msg: bytes):
+    """Best-effort extraction of (dn, password) from a raw LDAPMessage."""
+    try:
+        pos = 0
+        # LDAPMessage SEQUENCE
+        assert msg[pos] == 0x30
+        pos += 1
+        _, pos = _ber_length(msg, pos)
+        # messageID INTEGER
+        assert msg[pos] == 0x02
+        pos += 1
+        id_len, pos = _ber_length(msg, pos)
+        pos += id_len
+        # BindRequest [APPLICATION 0]
+        assert msg[pos] == 0x60
+        pos += 1
+        _, pos = _ber_length(msg, pos)
+        # version INTEGER
+        assert msg[pos] == 0x02
+        pos += 1
+        v_len, pos = _ber_length(msg, pos)
+        pos += v_len
+        # name LDAPDN (OCTET STRING)
+        dn, pos = _ber_string(msg, pos)
+        # authentication CHOICE — simple [0] OCTET STRING
+        if msg[pos] == 0x80:
+            pos += 1
+            pw_len, pos = _ber_length(msg, pos)
+            password = msg[pos:pos + pw_len].decode(errors="replace")
+        else:
+            password = "<sasl_or_unknown>"
+        return dn, password
+    except Exception:
+        return "<parse_error>", "<parse_error>"
+
+
+def _bind_error_response(message_id: int) -> bytes:
+    # BindResponse: resultCode=49 (invalidCredentials), matchedDN="", errorMessage=""
+    result_code = bytes([0x0a, 0x01, 0x31])   # ENUMERATED 49
+    matched_dn = bytes([0x04, 0x00])           # empty OCTET STRING
+    error_msg  = bytes([0x04, 0x00])           # empty OCTET STRING
+    bind_resp_body = result_code + matched_dn + error_msg
+    bind_resp = bytes([0x61, len(bind_resp_body)]) + bind_resp_body
+
+    msg_id_enc = bytes([0x02, 0x01, message_id & 0xff])
+    ldap_msg_body = msg_id_enc + bind_resp
+    return bytes([0x30, len(ldap_msg_body)]) + ldap_msg_body
+
+
+class LDAPProtocol(asyncio.Protocol):
+    def __init__(self):
+        self._transport = None
+        self._peer = None
+        self._buf = b""
+
+    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])
+
+    def data_received(self, data):
+        self._buf += data
+        self._process()
+
+    def _process(self):
+        while len(self._buf) >= 2:
+            if self._buf[0] != 0x30:
+                self._buf = b""
+                return
+            if self._buf[1] < 0x80:
+                msg_len = self._buf[1] + 2
+            elif self._buf[1] == 0x81:
+                if len(self._buf) < 3:
+                    return
+                msg_len = self._buf[2] + 3
+            else:
+                self._buf = b""
+                return
+            if len(self._buf) < msg_len:
+                return
+            msg = self._buf[:msg_len]
+            self._buf = self._buf[msg_len:]
+            self._handle_message(msg)
+
+    def _handle_message(self, msg: bytes):
+        # Extract messageID for the response
+        try:
+            message_id = msg[4] if len(msg) > 4 else 1
+        except Exception:
+            message_id = 1
+        dn, password = _parse_bind_request(msg)
+        _log("bind", src=self._peer[0], dn=dn, password=password)
+        self._transport.write(_bind_error_response(message_id))
+
+    def connection_lost(self, exc):
+        _log("disconnect", src=self._peer[0] if self._peer else "?")
+
+
+async def main():
+    _log("startup", msg=f"LDAP honeypot starting as {HONEYPOT_NAME}")
+    loop = asyncio.get_running_loop()
+    server = await loop.create_server(LDAPProtocol, "0.0.0.0", 389)
+    async with server:
+        await server.serve_forever()
+
+
+if __name__ == "__main__":
+    asyncio.run(main())