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wireguard-scripts/README.md
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wireguard-scripts

M1 runtime foundation

The current entry point provides dependency-free help and version commands. The planned operational commands are recognized but remain unavailable until later milestones.

Runtime locations default to the project directory and can be redirected for an isolated run with absolute paths using these environment variables:

WG_MANAGER_CONFIG, WG_MANAGER_BACKUP_DIR, WG_MANAGER_LOG_DIR, WG_MANAGER_METADATA_DIR, WG_MANAGER_ARCHIVE_DIR, and WG_MANAGER_LOCK_FILE.

WG_MANAGER_GUM selects an executable gum explicitly; otherwise the bundled bin/gum and then PATH are checked in that order. Configuration is parsed as restricted KEY=VALUE data and is never executed as shell code. Blank lines and full-line # comments are ignored; spaces around the key, =, and value are trimmed. Values are either one unquoted token or a double-quoted value without escapes, and only documented keys are accepted.

For deterministic read-only tests, WG_MANAGER_NOW may override the current epoch when set to decimal seconds; invalid values are rejected.

M2 adds read-only status and list. They parse the configured WireGuard file and, when available, wg show <interface> dump; a stopped or unavailable runtime is reported as unavailable and disk-only peers remain visible. list uses stable tab-separated output with English machine fields state and origin (managed, legacy, or unmanaged) and never prints private or preshared keys.

The explicit peer comment marker is # wg-manager-client: NAME; it is only a display candidate. A peer is considered managed only when its exact public key and configured addresses match a valid metadata record with MANAGED=1.

M3 transaction foundation

The internal run_transaction OPERATION TARGET BUILDER [METADATA_FILE...] primitive acquires WG_MANAGER_LOCK_FILE, then reloads and validates the live configuration before calling its builder. It creates a restrictive, timestamped backup, validates a same-filesystem staged configuration with wg-quick strip, replaces the live file atomically, applies it with wg syncconf, and verifies the active peer set. Apply or verification failures restore both disk and runtime; a failed restoration is reported as a critical rollback error. No M3 mutation command is exposed yet.

M3 tests use only isolated overrides and deny-by-default command mocks; they do not inspect or modify host WireGuard state.

M4 client creation

add NAME creates a client transactionally. The optional forms are --mode full-tunnel|split-tunnel and --endpoint HOST; unknown or extra arguments are rejected. Names are restricted to ASCII letters, digits, ., _, and - (without a leading -). Root is required for production use; tests enable only an isolated WG_MANAGER_TEST_MODE under TEST_ROOT.

Private/public/PSK files, client configuration, and metadata use restrictive permissions and are removed if the server transaction or rollback fails. Generated key material is supplied to wg through stdin or stdout and is not placed in command arguments or diagnostic output.