# Session 003 Handoff — P4Sudo Project

**Date:** 2026-04-08
**Bot user:** bot_Claude_Anthropic
**Workspace:** bot_Claude_Anthropic.P4MBPro5.p4sudo
**Stream:** //p4sudo/dev

---

## Session Summary

This session was primarily a coding session. Three main deliverables:

1. **`bin/p4sudo.sh`** — Core dispatcher (CL 32547)
2. **`bin/p4sudo-help.sh`** — Help interception script (CL 32547)
3. **`README.md`** — Project overview for the Swarm/Code Review landing page (CL 32549)

Additionally, governance was updated at session close (this CL):
- `ai/CLAUDE.md` updated with stream topology notes (`ai/` exclude mapping,
  Version file format)
- `ai/session-003-handoff.md` (this file)

---

## Changelists This Session

| CL | Description | Status |
|----|-------------|--------|
| 32547 | Add bin/p4sudo.sh dispatcher and bin/p4sudo-help.sh | Submitted |
| 32549 | Add README.md project overview | Submitted |
| 32555 | Update CLAUDE.md governance; session-003 handoff | **Submitted this session** |

---

## What Was Accomplished

### p4sudo.sh — Core Dispatcher

Full implementation of the broker filter dispatcher:

- **Broker stdin parsing** — extracts `user`, `workspace`, `cwd`,
  `brokerTargetPort`, `argCount`, `Arg0`…`ArgN`
- **Config parsing** (`parse_cfg`) — reads `[settings]`, `[commands]`,
  `[rules]` sections from `p4sudo.cfg`
- **Service account guard** — rejects invocations by `p4sudo-svc` itself
  (prevents privilege escalation)
- **`max_args` enforcement** — safety limit on argument count
- **Authorization** (`check_authorization`) — walks rules top-to-bottom;
  matches by `user:` or `group:` principal (via `p4 groups -u`), command
  name, and optional arg glob pattern; first match wins; implicit deny if
  no rule matches
- **Dispatch** — `type=native` emits `action: REWRITE` to p4d as the service
  account; `type=script` execs the command script under `timeout`; unknown
  command type treated as native
- **Context export** — command scripts receive `P4SUDO_REQUESTING_USER`,
  `P4SUDO_P4PORT`, `P4SUDO_WORKSPACE`, `P4SUDO_CWD`, etc. as env vars
- **Hybrid logging** — per-invocation timestamped log in `$LOGS` (SDP style,
  explicit writes — no exec redirect since stdout is the broker protocol
  channel) plus persistent audit log from `p4sudo.cfg`

### p4sudo-help.sh — Help Interception

- Intercepts `p4 help sudo` and `p4 help sudo <subcmd>`; passes all other
  `p4 help` topics through with `action: PASS`
- `p4 help sudo` lists all registered commands with descriptions from
  `p4sudo.cfg`
- `p4 help sudo <subcmd>` shows usage for that command
- Reads command registry from the `[commands]` section of `p4sudo.cfg`

### Coding Standard Compliance

Both scripts conform to the SDP Bash Coding Standard (CL 32539):
- `set -u` only (no `-e`, no `-o pipefail`)
- 3-space indentation
- `UpperCamelCase` globals, `lowerCamelCase` function-local variables
- `function name () { }` style
- `#====` / `#----` section dividers
- `usage()` with `-h`, `-man`, `-V`/`--version`
- Sources `logging.lib` and `run.lib` from `$SDPCommonLib`
- `terminate()` overridden after library source to suppress stdout output
  (stdout is the broker protocol channel — the library's version would print
  "Log is: ..." to the protocol stream)
- ShellCheck 0.10.0 clean

### README.md

Project overview for the Swarm Code Review landing page:
- Problem statement (the super-user delegation problem)
- How it works (architecture narrative + ASCII diagram)
- Key features: policy-driven rules, site-defined commands, web UI support,
  audit trail, `p4 help` integration
- Deployment overview (files, broker config snippet)
- Repository layout
- Status section

Does not mention Black Belt, PPN, or any customer-specific content.

---

## Governance Updates (CLAUDE.md)

Added to the Version Control Workflow section:

- **Stream topology / `ai/` exclude**: The `//p4sudo/dev` stream spec has an
  `exclude ai/...` mapping. Session logs and handoffs live in `dev` only and
  cannot be promoted north. No special handling needed — stream spec enforces
  the boundary.

- **Version file format**: `Rev. P4Sudo/MultiArch/2026.1/32549 (2026/04/08).`
  Tom manages this file manually. Bot should not modify unless asked.

---

## Tom's Action Items (Carried Forward)

1. **Promote `README.md` to `//p4sudo/main`** — Tom intends to do this manually.
2. **Add `exclude ai/...` to `//p4sudo/dev` stream spec** — Required to enforce
   the boundary described above. (Tom may have already done this.)
3. **AWS Security Group** — Open port :1671 on `ppn.perforce.com` (internal-only).
4. **Provision Ubuntu 24.04 EC2** — New app server in PPN AWS account.
5. **`p4sudo-svc.blackbelt` persistent workspace** — Manual setup on PPN.

---

## Next Session: Where to Pick Up

The core P4Sudo framework (dispatcher, help script, config format, docs) is
complete. The next logical milestone is the first site-defined command script.

**Recommended next task: `mkblackbelt.sh`**

This is the first real command script, implementing the full 9-step workflow
documented in `doc/use-cases.md`. It exercises every part of the framework:
config parsing, ephemeral workspace creation, P4 operations as the service
account, template substitution, and CustomerIndex.md update.

Pre-requisites for testing `mkblackbelt.sh` end-to-end:
- Port :1671 open on `ppn.perforce.com` (AWS Security Group — Tom's action item)
- `p4sudo-svc.blackbelt` persistent workspace on PPN
- `//BlackBelt/main/docs/INFO.md.template` accessible on PPN

If infrastructure isn't ready, the script can still be written and
syntax-checked; integration testing waits for the port to open.

---

## Files of Interest

| Path | Notes |
|------|-------|
| `ai/CLAUDE.md` | Full governance — read at session start |
| `bin/p4sudo.sh` | Core dispatcher — complete |
| `bin/p4sudo-help.sh` | Help interception — complete |
| `README.md` | Project overview (Swarm landing page) |
| `doc/use-cases.md` | UC-001 mkblackbelt — fully documented |
| `doc/mkblackbelt.ui.yaml` | Web form definition for mkblackbelt |
| `doc/p4sudo.cfg.example` | Annotated config reference |
| `doc/broker-rewrite-reference/README.md` | Broker filter protocol reference |