didericis
20e83258bf
Places a bottle's git-gate credentials + bare repos into the live shared gateway container when it registers — the execution side of the 13c(i) provisioning render. - provision_git_gate(gateway, bottle_id, plan): mkdir the per-bottle creds dir, docker cp each upstream's identity key (+ known_hosts when present) into /git-gate/creds/<bottle_id>/, then docker exec the namespaced, init-only script from git_gate_render_provision. No-op with no upstreams. - deprovision_git_gate(gateway, bottle_id): rm the bottle's /git/<id> + creds on teardown (idempotent). - bottle_id is validated (shell/path-safe alphabet) BEFORE any docker cp/rm, so a traversal id can never reach a path arg — the creds/repo dirs land in docker cp/rm arguments. Registry ids are token_hex; defense in depth. pyright 0 errors; pylint 9.83/10; unit suite green (the 13 test_sidecar_init /bin/sleep errors are pre-existing NixOS-local noise). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WBMWTEtQdJ4W5UrWuLHCck
95 lines
3.8 KiB
Python
95 lines
3.8 KiB
Python
"""Provision one bottle's git-gate state into the running shared gateway
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(PRD 0070, docker slice).
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The consolidated gateway serves every bottle's repos under `/git/<bottle_id>/`
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with per-repo credentials under `/git-gate/creds/<bottle_id>/`. When a bottle
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is registered the launcher must place *its* deploy keys + known_hosts into
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that per-bottle creds dir and init its bare repos there — so this copies the
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credential files into the live gateway container and runs the (namespaced,
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init-only) provisioning script produced by `git_gate_render_provision`.
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Isolating each bottle's creds dir + repo root by id is what keeps one
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bottle's push credentials out of another's repos on the shared gateway.
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"""
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from __future__ import annotations
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import re
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from ...docker_cmd import run_docker
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from ...git_gate import GitGatePlan, git_gate_render_provision
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# bottle ids index the gateway's per-bottle repo + creds dirs; they land in
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# `docker cp`/`rm` path arguments, so validate before any path is built (a
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# traversal id like "../etc" must never reach the container). Registry ids are
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# token_hex — this is defense in depth at the docker boundary.
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_SAFE_BOTTLE_ID = re.compile(r"[A-Za-z0-9_-]+")
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class GatewayProvisionError(RuntimeError):
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"""A git-gate provisioning step against the running gateway failed."""
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def _require_safe(bottle_id: str) -> None:
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if not _SAFE_BOTTLE_ID.fullmatch(bottle_id):
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raise GatewayProvisionError(f"unsafe bottle id {bottle_id!r}")
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def _creds_dir(bottle_id: str) -> str:
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return f"/git-gate/creds/{bottle_id}"
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def _exec(gateway: str, argv: list[str]) -> None:
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"""`docker exec` a command in the gateway, raising on non-zero exit."""
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proc = run_docker(["docker", "exec", gateway, *argv])
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if proc.returncode != 0:
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raise GatewayProvisionError(
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f"gateway exec {argv!r} failed: {proc.stderr.strip()}"
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)
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def _cp_into(gateway: str, src: str, dest: str) -> None:
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"""`docker cp` a host file into the gateway, raising on non-zero exit."""
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proc = run_docker(["docker", "cp", src, f"{gateway}:{dest}"])
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if proc.returncode != 0:
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raise GatewayProvisionError(
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f"gateway cp {src} -> {dest} failed: {proc.stderr.strip()}"
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)
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def provision_git_gate(gateway: str, bottle_id: str, plan: GitGatePlan) -> None:
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"""Place `bottle_id`'s git-gate credentials into the running `gateway`
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container and init its bare repos under `/git/<bottle_id>/`.
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Copies each upstream's identity key (and known_hosts, when present) into
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`/git-gate/creds/<bottle_id>/`, then runs the namespaced provisioning
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script. No-op for a bottle with no git upstreams."""
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_require_safe(bottle_id)
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if not plan.upstreams:
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return
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creds = _creds_dir(bottle_id)
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_exec(gateway, ["mkdir", "-p", creds])
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for u in plan.upstreams:
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if u.identity_file:
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_cp_into(gateway, u.identity_file, f"{creds}/{u.name}-key")
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known_hosts = str(u.known_hosts_file)
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if known_hosts and known_hosts != ".":
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_cp_into(gateway, known_hosts, f"{creds}/{u.name}-known_hosts")
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# Init the bare repos + per-repo credential config for this namespace.
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script = git_gate_render_provision(bottle_id, plan.upstreams)
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_exec(gateway, ["sh", "-c", script])
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def deprovision_git_gate(gateway: str, bottle_id: str) -> None:
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"""Remove a bottle's repos + creds from the gateway on teardown. Idempotent
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— an already-absent namespace is a clean no-op (best effort; a stray dir
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can't leak, since attribution is by source IP and the bottle is gone)."""
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_require_safe(bottle_id)
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run_docker([
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"docker", "exec", gateway, "rm", "-rf",
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f"/git/{bottle_id}", _creds_dir(bottle_id),
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])
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__all__ = ["provision_git_gate", "deprovision_git_gate", "GatewayProvisionError"]
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