Files
DECNET/decnet/services/smtp.py
anti f2b3393669 chore: relicense to AGPL-3.0-or-later and add SPDX headers
Replaces LICENSE (GPLv3 -> AGPLv3) and prepends
`SPDX-License-Identifier: AGPL-3.0-or-later` to every source file
across decnet/, decnet_web/, tests/, scripts/, and tools/.

Rationale: closes the GPLv3 ASP loophole so any party operating a
modified DECNET as a network service must offer their modified
source. Personal copyright (Samuel Paschuan) + inbound=outbound
contributions make a future unilateral relicense infeasible.

- LICENSE: full AGPL-3.0 text (gnu.org/licenses/agpl-3.0.txt)
- COPYRIGHT: project copyright notice
- tools/add_spdx_headers.py: idempotent header injector
  (shebang- and PEP 263-aware)

Touches 1565 source files (.py, .ts, .tsx, .js, .jsx, .css, .sh).
No behavior change; comments only.
2026-05-22 21:04:16 -04:00

67 lines
2.2 KiB
Python

# SPDX-License-Identifier: AGPL-3.0-or-later
import os
from pathlib import Path
from decnet.services.base import BaseService, ServiceConfigField
TEMPLATES_DIR = Path(__file__).parent.parent / "templates" / "smtp"
ARTIFACTS_ROOT = os.environ.get("DECNET_ARTIFACTS_ROOT", "/var/lib/decnet/artifacts")
# In-container path for full-message capture. /var/spool/mqueue is where
# sendmail historically parks unsent messages, so `ls` / `mount` inside the
# container looks benign to an attacker poking around.
_IN_CONTAINER_QUARANTINE = "/var/spool/mqueue"
class SMTPService(BaseService):
name = "smtp"
ports = [25, 587]
default_image = "build"
config_schema = [
ServiceConfigField(
key="banner",
label="SMTP greeting banner",
type="string",
placeholder="mail.corp.local ESMTP Postfix",
help="First line returned on TCP connect (220 ...).",
),
ServiceConfigField(
key="mta",
label="MTA persona",
type="enum",
enum=["postfix", "exim", "sendmail"],
default="postfix",
help="Shapes EHLO capability list and error wording.",
),
]
def compose_fragment(
self,
decky_name: str,
log_target: str | None = None,
service_cfg: dict | None = None,
) -> dict:
cfg = service_cfg or {}
quarantine_host = f"{ARTIFACTS_ROOT}/{decky_name}/smtp"
fragment: dict = {
"build": {"context": str(TEMPLATES_DIR)},
"container_name": f"{decky_name}-smtp",
"restart": "unless-stopped",
"cap_add": ["NET_BIND_SERVICE"],
"environment": {
"NODE_NAME": decky_name,
"SMTP_QUARANTINE_DIR": _IN_CONTAINER_QUARANTINE,
},
"volumes": [f"{quarantine_host}:{_IN_CONTAINER_QUARANTINE}:rw"],
}
if log_target:
fragment["environment"]["LOG_TARGET"] = log_target
if "banner" in cfg:
fragment["environment"]["SMTP_BANNER"] = cfg["banner"]
if "mta" in cfg:
fragment["environment"]["SMTP_MTA"] = cfg["mta"]
return fragment
def dockerfile_context(self) -> Path:
return TEMPLATES_DIR