Matthew Jackson
745d9c0084
- to_keydb_cfg emits the sibling `| HC2 |` line (AACS 2.0 host cert), the inverse of parse_host_cert_v2, so a round-trip never silently drops v2 host certs. - save-validation mirrors the parser's real disc-entry rule exactly: a `0x` line counts as an entry only if it also contains ` = `, so validating + persisting content that parses to zero usable entries (e.g. a stray `0xDEADBEEF` line) can no longer succeed. - disc-entry title is kept verbatim (parens and all) on parse, matching the emit path so it round-trips.
1547 lines
62 KiB
Rust
1547 lines
62 KiB
Rust
//! AACS Key Database parsing — KEYDB.cfg format.
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//!
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//! Byte-faithful copy of libfreemkv's `aacs::keydb` parser, relocated so the
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//! keydb.cfg format lives with the key sources that consume it. The parsing
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//! logic is identical; the only deviation is [`KeyDb::load`], which returns a
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//! standalone [`std::io::Result`] here instead of `libfreemkv::error::Result`
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//! (so the format crate carries no dependency on libfreemkv's error type).
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//
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// The parser is copied verbatim, so it carries the full KeyDb/DiscEntry API
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// even though this crate's consumer (`keydb.rs`) only exercises a subset
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// (`load`, `find_disc`, `iter_disc_entries`, and the public fields read by
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// `candidates_from`/`host_certs`). The unused items — `empty`, `find_vuk`,
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// `DiscEntry::{title, vid}` — are part of the faithful copy and are
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// retained rather than pruned; allow dead_code so the byte-for-byte copy
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// compiles clean without diverging from the libfreemkv original.
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#![allow(dead_code)]
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use std::collections::HashMap;
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use libfreemkv::aacs::types::{DeviceKey, HostCert};
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/// A keydb per-disc unit key: the CPS-unit number paired with its 16-byte key.
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pub type NumberedUnitKey = (u32, [u8; 16]);
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/// Upper bound on the on-disk keydb.cfg size accepted by [`KeyDb::load`].
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/// The real public UHD keydb is a few MiB; 64 MiB is generous headroom while
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/// still bounding the worst-case allocation from a hostile/corrupt file.
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const MAX_KEYDB_BYTES: u64 = 64 * 1024 * 1024;
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/// Upper bound on parsed disc entries. The real public keydb carries
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/// ~170k+ entries, so the cap sits well above that while still bounding
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/// memory against a pathological input. Surplus lines are ignored.
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const MAX_DISC_ENTRIES: usize = 500_000;
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/// Parsed AACS key database.
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#[derive(Debug)]
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pub struct KeyDb {
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/// Device keys for MKB processing
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pub device_keys: Vec<DeviceKey>,
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/// Processing keys (pre-computed media keys for specific MKB versions)
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pub processing_keys: Vec<[u8; 16]>,
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/// Host certificate + private key for SCSI authentication, paired with the
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/// keydb's revocation metadata (libfreemkv's `HostCert` stays pure; the
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/// `Revoked in MKBv<N>` annotation is tracked in this crate).
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pub host_certs: Vec<KeydbHostCert>,
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/// Per-disc VUK entries indexed by disc hash (hex lowercase)
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pub disc_entries: HashMap<String, DiscEntry>,
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}
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/// A keydb host certificate together with its revocation generation.
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///
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/// libfreemkv's [`HostCert`] is intentionally crypto-pure and carries no
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/// revocation state; the keydb's `; Revoked in MKBv<N>` comment is parsed
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/// here and stored alongside the cert so callers can filter by MKB generation
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/// without modifying the library type.
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#[derive(Debug, Clone)]
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pub struct KeydbHostCert {
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/// The pure libfreemkv host certificate + private key(s).
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pub cert: HostCert,
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/// The MKB generation at which this host cert was revoked, parsed from a
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/// `; Revoked in MKBv<N>` comment. `None` when the cert carries no such
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/// annotation (treated as never-revoked).
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pub revoked_at_mkb: Option<u32>,
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}
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/// A per-disc entry from the key database.
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#[derive(Debug, Clone)]
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pub struct DiscEntry {
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/// Disc hash (20 bytes, hex)
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pub disc_hash: String,
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/// Disc title
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pub title: String,
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/// Media Key (16 bytes) — from MKB processing
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pub media_key: Option<[u8; 16]>,
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/// Volume ID — the AACS VID (the keydb `I` token), 16 bytes. NOT the disc's
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/// identity (that's `disc_hash`); this is the per-disc Volume ID used to
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/// derive the VUK.
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pub vid: Option<[u8; 16]>,
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/// Volume Unique Key (16 bytes) — decrypts title keys
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pub vuk: Option<[u8; 16]>,
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/// Unit keys (title keys) indexed by CPS unit number
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pub unit_keys: Vec<NumberedUnitKey>,
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/// MKB version parsed from the trailing `; MKBv<N>` comment, if present.
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pub mkb_version: Option<u32>,
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/// Volume size in bytes parsed from `VolumeSize: <N>` in the comment.
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pub volume_size: Option<u64>,
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/// True if the comment contains the literal `(UHD)` flag.
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pub is_uhd: bool,
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}
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/// Parse a hex string like "0xABCD..." into bytes.
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///
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/// Operates on bytes, not `&str` char boundaries: the keydb is
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/// third-party content, so a non-ASCII scalar (e.g. a 4-byte UTF-8
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/// codepoint) must not panic on a mid-codepoint slice. Any non-hex
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/// byte yields `None`.
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pub(crate) fn parse_hex(s: &str) -> Option<Vec<u8>> {
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// The one workspace hex parser (strips an optional 0x/0X, byte-based).
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libfreemkv::hex::parse_hex_bytes(s)
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}
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/// Read the run of consecutive ASCII decimal digits immediately following the
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/// first occurrence of `marker` in `text`, parsing them with `parse`.
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///
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/// Operates on raw bytes so untrusted third-party comment text (which may carry
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/// non-ASCII scalars) never panics on a char boundary. Returns `None` when the
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/// marker is absent or no digits follow it. Whitespace between the marker and
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/// the digits is skipped, so this serves both `MKBv<N>` (no gap) and
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/// `VolumeSize: <N>` (a space before the number).
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fn parse_digits_after<T: std::str::FromStr>(text: &str, marker: &str) -> Option<T> {
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let bytes = text.as_bytes();
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let start = text.find(marker)? + marker.len();
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let mut i = start;
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// Skip any whitespace between the marker and the digits.
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while i < bytes.len() && bytes[i].is_ascii_whitespace() {
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i += 1;
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}
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let digit_start = i;
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while i < bytes.len() && bytes[i].is_ascii_digit() {
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i += 1;
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}
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if i == digit_start {
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return None;
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}
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// The digit run is pure ASCII, so this slice is a valid str.
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std::str::from_utf8(&bytes[digit_start..i])
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.ok()?
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.parse()
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.ok()
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}
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/// Parse the host-cert revocation generation from a `Revoked in MKBv<N>`
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/// comment on a `| HC |`/`| HC2 |` line. `None` when absent.
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fn parse_revoked_at_mkb(line: &str) -> Option<u32> {
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parse_digits_after(line, "Revoked in MKBv")
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}
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/// Parse hex into a fixed-size array.
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pub(crate) fn parse_hex16(s: &str) -> Option<[u8; 16]> {
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libfreemkv::hex::parse_hex_fixed::<16>(s)
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}
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pub(crate) fn parse_hex20(s: &str) -> Option<[u8; 20]> {
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libfreemkv::hex::parse_hex_fixed::<20>(s)
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}
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impl KeyDb {
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/// Construct an empty KeyDb. Used by unit tests; production code
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/// reaches a populated KeyDb via [`KeyDb::load`] or [`KeyDb::parse`].
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pub fn empty() -> Self {
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KeyDb {
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device_keys: Vec::new(),
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processing_keys: Vec::new(),
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host_certs: Vec::new(),
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disc_entries: HashMap::new(),
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}
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}
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/// Parse a KEYDB.cfg file from a string.
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pub fn parse(data: &str) -> Self {
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let mut db = KeyDb {
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device_keys: Vec::new(),
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processing_keys: Vec::new(),
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host_certs: Vec::new(),
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disc_entries: HashMap::new(),
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};
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for line in data.lines() {
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let line = line.trim();
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// Skip comments and empty lines
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if line.is_empty() || line.starts_with(';') || line.starts_with('#') {
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continue;
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}
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// Device Key.
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// Two shapes are accepted:
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// 1. Positioned DK: `| DK | DEVICE_KEY 0x... | DEVICE_NODE 0x... | KEY_UV 0x... | KEY_U_MASK_SHIFT 0x...`
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// → loaded into `device_keys` (deterministic tree walk via `calc_pk_from_dk`).
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// 2. Orphan DK: `| DK | DEVICE_KEY 0x...` with no position fields.
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// → loaded into `processing_keys` (brute walker / terminal validation).
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// Per AACS spec a "PK" IS a DK at terminal position, so both row types
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// are DKs in the unified model; only the metadata differs.
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if line.starts_with("| DK") {
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if let Some(dk) = Self::parse_device_key(line) {
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db.device_keys.push(dk);
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} else if let Some(key) = Self::parse_orphan_dk(line) {
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db.processing_keys.push(key);
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}
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continue;
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}
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// Processing Key
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if line.starts_with("| PK") {
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if let Some(pk) = Self::parse_processing_key(line) {
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db.processing_keys.push(pk);
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}
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continue;
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}
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// Host Certificate (AACS 2.0).
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//
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// An HC2 row normally augments the preceding HC (AACS 1.0) row.
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// KEYDB line ordering is third-party, so an HC2 row may appear
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// before any HC row; rather than silently dropping the AACS 2.0
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// credentials, carry them on a fresh HostCert with an empty v1
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// cert (the v1 private_key/certificate stay zero/empty and are
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// ignored by the v1 handshake, which guards on cert length).
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if line.starts_with("| HC2") {
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if let Some((pk, cert, revoked_at_mkb)) = Self::parse_host_cert_v2(line) {
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if let Some(hc) = db.host_certs.last_mut() {
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hc.cert.private_key_v2 = Some(pk);
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hc.cert.certificate_v2 = Some(cert);
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// The `; Revoked in MKBv<N>` annotation can live on the
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// HC2 line rather than the preceding HC line; carry it
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// onto the combined cert if the HC line had none, so the
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// revocation isn't silently dropped.
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if hc.revoked_at_mkb.is_none() {
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hc.revoked_at_mkb = revoked_at_mkb;
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}
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} else {
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db.host_certs.push(KeydbHostCert {
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cert: HostCert {
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private_key: [0u8; 20],
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certificate: Vec::new(),
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private_key_v2: Some(pk),
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certificate_v2: Some(cert),
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},
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revoked_at_mkb,
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});
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}
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}
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continue;
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}
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// Host Certificate (AACS 1.0)
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if line.starts_with("| HC") {
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if let Some(hc) = Self::parse_host_cert(line) {
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db.host_certs.push(hc);
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}
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continue;
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}
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// Disc entry: starts with 0x
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if line.starts_with("0x") && line.contains(" = ") {
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if db.disc_entries.len() >= MAX_DISC_ENTRIES {
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continue;
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}
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if let Some(entry) = Self::parse_disc_entry(line) {
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db.disc_entries.insert(entry.disc_hash.clone(), entry);
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}
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}
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}
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db
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}
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/// Load a KEYDB.cfg from disk.
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///
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/// A read failure (missing/unreadable file, non-UTF-8 content) surfaces
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/// as an [`std::io::Error`] (the cap-exceeded case as
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/// [`std::io::ErrorKind::InvalidData`]). Note that [`Self::parse`] itself
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/// is lenient: a syntactically valid but key-less file parses to an empty
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/// [`KeyDb`] rather than an error — callers needing a non-empty db must
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/// check the parsed contents.
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pub fn load(path: &std::path::Path) -> std::io::Result<Self> {
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// Stat-and-cap before reading so a hostile/corrupt file can't force an
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// unbounded allocation. A file strictly over the cap is rejected (a
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// file exactly at MAX_KEYDB_BYTES is accepted, matching the `>` guard
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// and libfreemkv's original at-cap-is-allowed semantics).
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if let Ok(meta) = std::fs::metadata(path) {
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if meta.len() > MAX_KEYDB_BYTES {
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return Err(std::io::Error::new(
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std::io::ErrorKind::InvalidData,
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format!(
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"keydb.cfg exceeds {MAX_KEYDB_BYTES} byte cap: {}",
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path.display()
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),
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));
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}
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}
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let data = std::fs::read_to_string(path)?;
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Ok(Self::parse(&data))
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}
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/// Look up a disc by its hash. Returns the VUK if found.
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pub fn find_vuk(&self, disc_hash: &str) -> Option<[u8; 16]> {
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let hash = disc_hash
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.trim()
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.to_lowercase()
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.trim_start_matches("0x")
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.to_string();
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// Try with 0x prefix and without. parse_disc_entry only stores keys
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// from lines that began with "0x", so every stored key carries the
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// prefix and the no-prefix fallback is currently unreachable; it is
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// retained as a defensive match for the prefix-agnostic lookup contract.
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self.disc_entries
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.get(&format!("0x{hash}"))
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.or_else(|| self.disc_entries.get(&hash))
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.and_then(|e| e.vuk)
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}
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/// Look up a disc by its hash. Returns the full entry.
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pub fn find_disc(&self, disc_hash: &str) -> Option<&DiscEntry> {
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let hash = disc_hash
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.trim()
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.to_lowercase()
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.trim_start_matches("0x")
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.to_string();
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// The no-prefix fallback below is currently unreachable (every stored
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// key carries the "0x" prefix, see find_vuk); kept as a defensive
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// match for the prefix-agnostic lookup contract.
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self.disc_entries
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.get(&format!("0x{hash}"))
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.or_else(|| self.disc_entries.get(&hash))
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}
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/// Iterate every disc entry. Used by Path 3 (scan for matching VID).
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pub fn iter_disc_entries(&self) -> impl Iterator<Item = &DiscEntry> {
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self.disc_entries.values()
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}
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/// The host certs usable at MKB generation `mkb`.
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///
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/// A cert annotated `Revoked in MKBv<R>` is unusable once the disc's MKB
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/// generation reaches `R` (an AACS MKB revokes a cert from its own
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/// generation onward), so it is included only while `gen < R`. When `mkb`
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/// is `None` the disc's generation is unknown and cannot be filtered, so
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/// every cert is returned; certs with no revocation annotation are always
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/// returned.
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pub fn host_certs(&self, mkb: Option<u32>) -> Vec<HostCert> {
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self.host_certs
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.iter()
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.filter(|hc| match (hc.revoked_at_mkb, mkb) {
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(None, _) => true,
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(Some(_), None) => true,
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(Some(revoked), Some(disc_gen)) => disc_gen < revoked,
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})
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.map(|hc| hc.cert.clone())
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.collect()
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}
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/// Standalone keydb accessor: the disc's Volume ID (the keydb `I` token),
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/// looked up by the same disc-hash form [`Self::find_disc`] accepts. Pure
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/// file lookup; no crypto/derivation.
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pub fn get_vid(&self, disc_hash: &str) -> Option<[u8; 16]> {
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self.find_disc(disc_hash).and_then(|e| e.vid)
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}
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/// Standalone keydb accessor: the disc's stored unit (title) keys, cloned.
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/// Empty when the disc is absent or carries no unit keys. Pure file lookup.
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pub fn get_uk(&self, disc_hash: &str) -> Vec<NumberedUnitKey> {
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self.find_disc(disc_hash)
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.map(|e| e.unit_keys.clone())
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.unwrap_or_default()
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}
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/// Standalone keydb accessor: `(disc_hash, unit_keys)` for every disc entry
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/// that carries at least one unit key. Pure file lookup.
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pub fn get_uks(&self) -> Vec<(String, Vec<NumberedUnitKey>)> {
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self.disc_entries
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.values()
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.filter(|e| !e.unit_keys.is_empty())
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.map(|e| (e.disc_hash.clone(), e.unit_keys.clone()))
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.collect()
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}
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|
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/// Serialize back to keydb.cfg text — the INVERSE of [`Self::parse`], so the
|
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/// keydb wire format lives in ONE place (parse + emit together). Emits, in a
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/// deterministic order: host certs, device keys, processing keys, then one
|
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/// line per disc entry (sorted by hash). `parse(to_keydb_cfg(kd))` reproduces
|
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/// every field (see `round_trips_through_parse`). Used by the key-import tool
|
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/// to export a complete keydb.cfg (keys + host certs + VIDs).
|
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///
|
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/// The trailing `; <comment>` (MKB version / volume size / UHD) is emitted
|
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/// ONLY after a `U` (unit-keys) field — that is the one place the parser
|
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/// splits the value on `;`. Gluing a comment onto an `M`/`I`/`V` value would
|
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/// make `parse_hex16` reject the whole field, so a comment-bearing entry that
|
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/// has no unit keys drops its comment (keys always survive; the metadata is a
|
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/// derivable hint). Real per-disc rows that carry metadata also carry keys.
|
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pub fn to_keydb_cfg(&self) -> String {
|
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fn hx(b: &[u8]) -> String {
|
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use std::fmt::Write;
|
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let mut s = String::with_capacity(b.len() * 2);
|
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for x in b {
|
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let _ = write!(s, "{x:02x}");
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}
|
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s
|
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}
|
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let mut out = String::new();
|
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|
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// Host certs (AACS 1.0): | HC | HOST_PRIV_KEY 0x.. | HOST_CERT 0x.. ; Revoked in MKBv<N>
|
||
// AACS 2.0 credentials ride a sibling `| HC2 |` line; emit it too so a
|
||
// round-trip through `to_keydb_cfg` never silently drops v2 host certs.
|
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for hc in &self.host_certs {
|
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out.push_str("| HC | HOST_PRIV_KEY 0x");
|
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out.push_str(&hx(&hc.cert.private_key));
|
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out.push_str(" | HOST_CERT 0x");
|
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out.push_str(&hx(&hc.cert.certificate));
|
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if let Some(n) = hc.revoked_at_mkb {
|
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out.push_str(" ; Revoked in MKBv");
|
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out.push_str(&n.to_string());
|
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}
|
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out.push('\n');
|
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// AACS 2.0 (HC2): inverse of `parse_host_cert_v2`.
|
||
if let (Some(pk2), Some(cert2)) = (
|
||
hc.cert.private_key_v2.as_ref(),
|
||
hc.cert.certificate_v2.as_ref(),
|
||
) {
|
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out.push_str("| HC2 | HOST_PRIV_KEY 0x");
|
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out.push_str(&hx(pk2));
|
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out.push_str(" | HOST_CERT 0x");
|
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out.push_str(&hx(cert2));
|
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out.push('\n');
|
||
}
|
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}
|
||
|
||
// Device keys: | DK | DEVICE_KEY 0x.. | DEVICE_NODE 0x.. | KEY_UV 0x.. | KEY_U_MASK_SHIFT 0x..
|
||
for dk in &self.device_keys {
|
||
out.push_str("| DK | DEVICE_KEY 0x");
|
||
out.push_str(&hx(&dk.key));
|
||
out.push_str(&format!(
|
||
" | DEVICE_NODE 0x{:04x} | KEY_UV 0x{:08x} | KEY_U_MASK_SHIFT 0x{:02x}\n",
|
||
dk.node, dk.uv, dk.u_mask_shift
|
||
));
|
||
}
|
||
|
||
// Processing keys: | PK | 0x..
|
||
for pk in &self.processing_keys {
|
||
out.push_str("| PK | 0x");
|
||
out.push_str(&hx(pk));
|
||
out.push('\n');
|
||
}
|
||
|
||
// Per-disc entries, sorted by hash for a deterministic, diff-friendly file.
|
||
let mut hashes: Vec<&String> = self.disc_entries.keys().collect();
|
||
hashes.sort();
|
||
for h in hashes {
|
||
let d = &self.disc_entries[h];
|
||
// `parse` keeps the `hash_part` verbatim, so the stored `disc_hash`
|
||
// already carries its `0x` prefix — emit it as-is (prefixing another
|
||
// `0x` would double it on re-parse).
|
||
out.push_str(h);
|
||
out.push_str(" = ");
|
||
// Parse stores the title VERBATIM (parens and all), so emitting it
|
||
// bare round-trips through parse. Empty → "Unknown".
|
||
if d.title.is_empty() {
|
||
out.push_str("Unknown");
|
||
} else {
|
||
out.push_str(&d.title);
|
||
}
|
||
if let Some(mk) = d.media_key {
|
||
out.push_str(" | M | 0x");
|
||
out.push_str(&hx(&mk));
|
||
}
|
||
if let Some(id) = d.vid {
|
||
out.push_str(" | I | 0x");
|
||
out.push_str(&hx(&id));
|
||
}
|
||
if let Some(vuk) = d.vuk {
|
||
out.push_str(" | V | 0x");
|
||
out.push_str(&hx(&vuk));
|
||
}
|
||
if !d.unit_keys.is_empty() {
|
||
out.push_str(" | U |");
|
||
for (n, k) in &d.unit_keys {
|
||
out.push_str(&format!(" {}-0x{}", n, hx(k)));
|
||
}
|
||
// Comment only after U (the one ;-split field) so it can't corrupt
|
||
// a preceding hex value on re-parse.
|
||
if d.mkb_version.is_some() || d.volume_size.is_some() || d.is_uhd {
|
||
out.push_str(" ;");
|
||
if let Some(v) = d.mkb_version {
|
||
out.push_str(&format!(" MKBv{v}"));
|
||
}
|
||
if let Some(sz) = d.volume_size {
|
||
out.push_str(&format!(" VolumeSize: {sz}"));
|
||
}
|
||
if d.is_uhd {
|
||
out.push_str(" (UHD)");
|
||
}
|
||
}
|
||
}
|
||
out.push('\n');
|
||
}
|
||
out
|
||
}
|
||
}
|
||
|
||
// ── Private parsers (re-open the inherent impl) ─────────────────────────────
|
||
|
||
impl KeyDb {
|
||
fn parse_device_key(line: &str) -> Option<DeviceKey> {
|
||
// | DK | DEVICE_KEY 0x... | DEVICE_NODE 0x... | KEY_UV 0x... | KEY_U_MASK_SHIFT 0x...
|
||
let key_str = line.split("DEVICE_KEY").nth(1)?.split('|').next()?.trim();
|
||
let node_str = line.split("DEVICE_NODE").nth(1)?.split('|').next()?.trim();
|
||
let uv_str = line.split("KEY_UV").nth(1)?.split('|').next()?.trim();
|
||
let shift_str = line
|
||
.split("KEY_U_MASK_SHIFT")
|
||
.nth(1)?
|
||
.split(';')
|
||
.next()?
|
||
.split('|')
|
||
.next()?
|
||
.trim();
|
||
|
||
Some(DeviceKey {
|
||
key: parse_hex16(key_str)?,
|
||
node: u16::from_str_radix(node_str.trim_start_matches("0x"), 16).ok()?,
|
||
uv: u32::from_str_radix(uv_str.trim_start_matches("0x"), 16).ok()?,
|
||
u_mask_shift: u8::from_str_radix(shift_str.trim_start_matches("0x"), 16).ok()?,
|
||
})
|
||
}
|
||
|
||
fn parse_processing_key(line: &str) -> Option<[u8; 16]> {
|
||
// | PK | 0x...
|
||
let parts: Vec<&str> = line.split('|').collect();
|
||
if parts.len() >= 3 {
|
||
let key_str = parts[2].split(';').next()?.trim();
|
||
return parse_hex16(key_str);
|
||
}
|
||
None
|
||
}
|
||
|
||
/// Parse an orphan DK row: a `| DK |` line carrying only the
|
||
/// `DEVICE_KEY` field (no position metadata). The key is then
|
||
/// treated like a terminal/unpositioned label by the resolver
|
||
/// (Path 2's brute walker). Returns `None` if the line carries
|
||
/// any position field — those are positioned DKs and parsed by
|
||
/// [`Self::parse_device_key`] instead.
|
||
fn parse_orphan_dk(line: &str) -> Option<[u8; 16]> {
|
||
if line.contains("DEVICE_NODE")
|
||
|| line.contains("KEY_UV")
|
||
|| line.contains("KEY_U_MASK_SHIFT")
|
||
{
|
||
return None;
|
||
}
|
||
let key_str = line
|
||
.split("DEVICE_KEY")
|
||
.nth(1)?
|
||
.split('|')
|
||
.next()?
|
||
.split(';')
|
||
.next()?
|
||
.trim();
|
||
parse_hex16(key_str)
|
||
}
|
||
|
||
fn parse_host_cert(line: &str) -> Option<KeydbHostCert> {
|
||
// | HC | HOST_PRIV_KEY 0x... | HOST_CERT 0x... ; Revoked in MKBv<N>
|
||
let priv_str = line
|
||
.split("HOST_PRIV_KEY")
|
||
.nth(1)?
|
||
.split('|')
|
||
.next()?
|
||
.trim();
|
||
let cert_str = line
|
||
.split("HOST_CERT")
|
||
.nth(1)?
|
||
.split(';')
|
||
.next()?
|
||
.split('|')
|
||
.next()?
|
||
.trim();
|
||
|
||
let certificate = parse_hex(cert_str)?;
|
||
// AACS 1.0 host certs are 92 bytes; drop malformed/short rows at
|
||
// parse time so the handshake never attempts junk (mirrors the v2
|
||
// path, which enforces >= 132).
|
||
if certificate.len() < 92 {
|
||
return None;
|
||
}
|
||
|
||
Some(KeydbHostCert {
|
||
cert: HostCert {
|
||
private_key: parse_hex20(priv_str)?,
|
||
certificate,
|
||
private_key_v2: None,
|
||
certificate_v2: None,
|
||
},
|
||
revoked_at_mkb: parse_revoked_at_mkb(line),
|
||
})
|
||
}
|
||
|
||
/// Parse AACS 2.0 host cert: `| HC2 | HOST_PRIV_KEY 0x... | HOST_CERT 0x...`
|
||
/// Returns the private key, the cert bytes, and the `Revoked in MKBv<N>`
|
||
/// generation (if the line carries that comment).
|
||
fn parse_host_cert_v2(line: &str) -> Option<([u8; 32], Vec<u8>, Option<u32>)> {
|
||
let priv_str = line
|
||
.split("HOST_PRIV_KEY")
|
||
.nth(1)?
|
||
.split('|')
|
||
.next()?
|
||
.trim();
|
||
let cert_str = line
|
||
.split("HOST_CERT")
|
||
.nth(1)?
|
||
.split(';')
|
||
.next()?
|
||
.split('|')
|
||
.next()?
|
||
.trim();
|
||
|
||
let priv_bytes = parse_hex(priv_str)?;
|
||
if priv_bytes.len() != 32 {
|
||
return None;
|
||
}
|
||
let mut pk = [0u8; 32];
|
||
pk.copy_from_slice(&priv_bytes);
|
||
|
||
let cert = parse_hex(cert_str)?;
|
||
if cert.len() < 132 {
|
||
return None;
|
||
}
|
||
|
||
Some((pk, cert, parse_revoked_at_mkb(line)))
|
||
}
|
||
|
||
fn parse_disc_entry(line: &str) -> Option<DiscEntry> {
|
||
// 0x<hash> = <title> | D | <date> | M | 0x<mk> | I | 0x<id> | V | 0x<vuk> | U | <unit_keys> ; <comment>
|
||
let (hash_part, rest) = line.split_once(" = ")?;
|
||
let disc_hash = hash_part.trim().to_lowercase();
|
||
|
||
// The trailing `;` comment (e.g.
|
||
// "; MKBv76/BEE/FindVUK 1.74 - VolumeSize: 81309007872 (UHD)") carries
|
||
// metadata the key fields don't. Capture everything after the FIRST ';'
|
||
// on the line, then extract MKB version / volume size / UHD flag.
|
||
let comment = line.split_once(';').map(|(_, c)| c).unwrap_or("");
|
||
// MKBv token: literal "MKBv" immediately followed by decimal digits.
|
||
let mkb_version: Option<u32> = parse_digits_after(comment, "MKBv");
|
||
// VolumeSize token: "VolumeSize:" then whitespace then a byte count.
|
||
let volume_size: Option<u64> = parse_digits_after(comment, "VolumeSize:");
|
||
// UHD flag: literal "(UHD)" anywhere in the comment.
|
||
let is_uhd = comment.contains("(UHD)");
|
||
|
||
// Title = everything between `= ` and the first ` | ` field (or the
|
||
// trailing `;` comment), kept VERBATIM (trimmed). This is a FAITHFUL copy
|
||
// of the keydb title, so it must round-trip exactly: a previous version
|
||
// extracted a `(...)` substring as a "display title", but that TRUNCATED
|
||
// real titles that legitimately contain parentheses ("Lawrence of Arabia
|
||
// (Restored Version) – Disc 2 …" → "Restored Version") and broke
|
||
// serialize→parse idempotence. Display prettification, if wanted, belongs
|
||
// in the title-display layer, NOT this codec.
|
||
let before_fields = rest.split(" | ").next().unwrap_or("");
|
||
// A title-only entry (no key fields) carries its `;` comment on the same
|
||
// chunk — strip it so the comment doesn't leak into the title.
|
||
let title = before_fields
|
||
.split(';')
|
||
.next()
|
||
.unwrap_or("")
|
||
.trim()
|
||
.to_string();
|
||
|
||
// Parse fields by tag
|
||
let mut media_key = None;
|
||
let mut vid = None;
|
||
let mut vuk = None;
|
||
let mut unit_keys = Vec::new();
|
||
|
||
let parts: Vec<&str> = rest.split(" | ").collect();
|
||
// Field scan starts at index 1: `parts[0]` is ALWAYS the title chunk and
|
||
// must be excluded, otherwise a disc whose title happens to be a field tag
|
||
// letter ("M", "I", "V", "U", "D") — e.g. `= M | M | 0x…` — would have the
|
||
// title eaten as a tag and shadow the real field. (Broke round-trip.)
|
||
let mut i = 1;
|
||
while i < parts.len() {
|
||
match parts[i].trim() {
|
||
"M" => {
|
||
if i + 1 < parts.len() {
|
||
media_key = parse_hex16(parts[i + 1].trim());
|
||
i += 1;
|
||
}
|
||
}
|
||
"I" => {
|
||
if i + 1 < parts.len() {
|
||
vid = parse_hex16(parts[i + 1].trim());
|
||
i += 1;
|
||
}
|
||
}
|
||
"V" => {
|
||
if i + 1 < parts.len() {
|
||
vuk = parse_hex16(parts[i + 1].trim());
|
||
i += 1;
|
||
}
|
||
}
|
||
"U" => {
|
||
if i + 1 < parts.len() {
|
||
// Unit keys: "1-0xKEY" or "1-0xKEY ; comment"
|
||
let uk_str = parts[i + 1].split(';').next().unwrap_or("").trim();
|
||
for uk in uk_str.split(' ') {
|
||
let uk = uk.trim();
|
||
if let Some((num, key)) = uk.split_once('-') {
|
||
if let Ok(n) = num.parse::<u32>() {
|
||
if let Some(k) = parse_hex16(key) {
|
||
unit_keys.push((n, k));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
i += 1;
|
||
}
|
||
}
|
||
_ => {}
|
||
}
|
||
i += 1;
|
||
}
|
||
|
||
Some(DiscEntry {
|
||
disc_hash,
|
||
title,
|
||
media_key,
|
||
vid,
|
||
vuk,
|
||
unit_keys,
|
||
mkb_version,
|
||
volume_size,
|
||
is_uhd,
|
||
})
|
||
}
|
||
}
|
||
|
||
#[cfg(test)]
|
||
mod tests {
|
||
use super::*;
|
||
|
||
/// `to_keydb_cfg` is the exact inverse of `parse`: parse a known line set,
|
||
/// serialize it, re-parse, and every field survives — device key, processing
|
||
/// key, host cert (priv key + cert + revocation), and the per-disc M/I(vid)/V/U
|
||
/// keys plus the MKBv/UHD comment metadata. Both sides go through `parse`, so
|
||
/// internal key forms (e.g. the `0x`-prefixed disc-hash) match by construction.
|
||
#[test]
|
||
fn to_keydb_cfg_round_trips_through_parse() {
|
||
let h = |b: u8, n: usize| {
|
||
std::iter::repeat(format!("{b:02x}"))
|
||
.take(n)
|
||
.collect::<String>()
|
||
};
|
||
let cert = h(0x99, 92); // AACS 1.0 host cert is 92 bytes
|
||
let src = format!(
|
||
"| HC | HOST_PRIV_KEY 0x{priv20} | HOST_CERT 0x{cert} ; Revoked in MKBv72\n\
|
||
| DK | DEVICE_KEY 0x{k16} | DEVICE_NODE 0x0a00 | KEY_UV 0x00000e23 | KEY_U_MASK_SHIFT 0x0b\n\
|
||
| PK | 0x{pk16}\n\
|
||
0x{hash20} = TestDisc | M | 0x{mk16} | I | 0x{id16} | V | 0x{vuk16} | U | 1-0x{u1} 2-0x{u2} ; MKBv76 VolumeSize: 81309007872 (UHD)\n",
|
||
hash20 = h(0xab, 20),
|
||
priv20 = h(0x88, 20),
|
||
cert = cert,
|
||
k16 = h(0x66, 16),
|
||
pk16 = h(0x77, 16),
|
||
mk16 = h(0x11, 16),
|
||
id16 = h(0x22, 16),
|
||
vuk16 = h(0x33, 16),
|
||
u1 = h(0x44, 16),
|
||
u2 = h(0x55, 16),
|
||
);
|
||
let a = KeyDb::parse(&src);
|
||
let b = KeyDb::parse(&a.to_keydb_cfg());
|
||
|
||
// Per-disc entry: every field round-trips.
|
||
assert_eq!(a.disc_entries.len(), 1);
|
||
assert_eq!(b.disc_entries.len(), 1);
|
||
let ea = a.disc_entries.values().next().unwrap();
|
||
let eb = b.disc_entries.values().next().unwrap();
|
||
assert_eq!(ea.disc_hash, eb.disc_hash);
|
||
assert_eq!(ea.title, eb.title, "title");
|
||
assert_eq!(ea.media_key, eb.media_key, "M");
|
||
assert_eq!(ea.vid, eb.vid, "I/vid");
|
||
assert_eq!(ea.vuk, eb.vuk, "V");
|
||
assert_eq!(ea.unit_keys, eb.unit_keys, "U");
|
||
assert_eq!(ea.mkb_version, eb.mkb_version, "MKBv");
|
||
assert_eq!(ea.is_uhd, eb.is_uhd, "UHD");
|
||
// Concrete values (not just self-consistency).
|
||
assert_eq!(ea.vid, Some([0x22u8; 16]));
|
||
assert_eq!(ea.vuk, Some([0x33u8; 16]));
|
||
assert_eq!(ea.unit_keys, vec![(1, [0x44u8; 16]), (2, [0x55u8; 16])]);
|
||
assert_eq!(ea.mkb_version, Some(76));
|
||
assert!(ea.is_uhd);
|
||
|
||
// Device key, processing key, host cert all survive byte-for-byte.
|
||
assert_eq!(a.device_keys.len(), b.device_keys.len());
|
||
assert_eq!(a.device_keys[0].key, b.device_keys[0].key);
|
||
assert_eq!(a.device_keys[0].node, b.device_keys[0].node);
|
||
assert_eq!(a.device_keys[0].uv, b.device_keys[0].uv);
|
||
assert_eq!(a.device_keys[0].u_mask_shift, b.device_keys[0].u_mask_shift);
|
||
assert_eq!(a.processing_keys, b.processing_keys);
|
||
assert_eq!(a.host_certs.len(), 1);
|
||
assert_eq!(b.host_certs.len(), 1);
|
||
assert_eq!(
|
||
a.host_certs[0].cert.private_key,
|
||
b.host_certs[0].cert.private_key
|
||
);
|
||
assert_eq!(
|
||
a.host_certs[0].cert.certificate,
|
||
b.host_certs[0].cert.certificate
|
||
);
|
||
assert_eq!(
|
||
a.host_certs[0].revoked_at_mkb,
|
||
b.host_certs[0].revoked_at_mkb
|
||
);
|
||
assert_eq!(b.host_certs[0].revoked_at_mkb, Some(72));
|
||
}
|
||
|
||
/// REAL-DATA IDEMPOTENCE — the "load + serialize back-to-back" check.
|
||
///
|
||
/// Parse the full keydb → serialize (S1) → parse S1 → serialize again (S2).
|
||
/// S1 MUST equal S2 byte-for-byte. This is the right invariant: a raw
|
||
/// keydb.cfg has formatting variance (whitespace, optional fields, comment
|
||
/// style) that our CANONICAL serializer normalizes, so `text == to_keydb_cfg`
|
||
/// is NOT expected — but once normalized, a re-load+re-serialize must be
|
||
/// stable. Idempotence here proves `parse` is lossless on its own output and
|
||
/// `to_keydb_cfg` is deterministic. Also asserts no rows are dropped.
|
||
/// Skipped unless `KEYDB_PATH` points at a real keydb.cfg.
|
||
#[test]
|
||
fn to_keydb_cfg_is_idempotent_on_real_keydb() {
|
||
let path = match keydb_path() {
|
||
Some(p) => p,
|
||
None => return,
|
||
};
|
||
let db1 = KeyDb::load(&path).unwrap();
|
||
let s1 = db1.to_keydb_cfg();
|
||
let db2 = KeyDb::parse(&s1);
|
||
let s2 = db2.to_keydb_cfg();
|
||
assert_eq!(s1.len(), s2.len(), "serialized byte length drifted");
|
||
assert!(s1 == s2, "to_keydb_cfg is NOT idempotent (S1 != S2)");
|
||
// No rows lost crossing the round trip.
|
||
assert_eq!(
|
||
db1.disc_entries.len(),
|
||
db2.disc_entries.len(),
|
||
"disc-entry count drift"
|
||
);
|
||
assert_eq!(db1.device_keys.len(), db2.device_keys.len(), "DK drift");
|
||
assert_eq!(
|
||
db1.processing_keys.len(),
|
||
db2.processing_keys.len(),
|
||
"PK drift"
|
||
);
|
||
assert_eq!(db1.host_certs.len(), db2.host_certs.len(), "HC drift");
|
||
}
|
||
|
||
/// Get KEYDB path from KEYDB_PATH environment variable. Returns None if not set or not found.
|
||
fn keydb_path() -> Option<std::path::PathBuf> {
|
||
let path = std::path::PathBuf::from(std::env::var("KEYDB_PATH").ok()?);
|
||
if path.exists() { Some(path) } else { None }
|
||
}
|
||
|
||
#[test]
|
||
fn test_parse_disc_entry() {
|
||
// All-zero placeholders — synthetic; no real key material in code.
|
||
let z40 = "00".repeat(20);
|
||
let z32 = "00".repeat(16);
|
||
let line = format!(
|
||
"0x{z40} = SAMPLE_FILM (Sample Film) | D | 2024-01-01 | M | 0x{z32} | I | 0x{z32} | V | 0x{z32} | U | 1-0x{z32} ; MKBv77"
|
||
);
|
||
let entry = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert_eq!(entry.title, "SAMPLE_FILM (Sample Film)"); // faithful, verbatim
|
||
assert!(entry.media_key.is_some());
|
||
assert!(entry.vuk.is_some());
|
||
assert_eq!(entry.unit_keys.len(), 1);
|
||
assert_eq!(entry.unit_keys[0].0, 1);
|
||
}
|
||
|
||
// NOTE: key fields below use obvious repeated-byte / zero placeholders
|
||
// (0x01.., 0x02.., 0x03.., 0x00..). NEVER put real — or real-looking — host,
|
||
// device, or processing key material in code; these tests exercise the
|
||
// parser's field-splitting only, not any genuine key.
|
||
|
||
#[test]
|
||
fn test_parse_device_key() {
|
||
let line = "| DK | DEVICE_KEY 0x00000000000000000000000000000000 | DEVICE_NODE 0x0800 | KEY_UV 0x00000400 | KEY_U_MASK_SHIFT 0x17 ; MKBv01-MKBv48";
|
||
let dk = KeyDb::parse_device_key(line).unwrap();
|
||
assert_eq!(dk.node, 0x0800);
|
||
assert_eq!(dk.u_mask_shift, 0x17);
|
||
}
|
||
|
||
#[test]
|
||
fn test_orphan_dk_row_loads_into_processing_keys() {
|
||
// `| DK |` row without position fields = an orphan DK. Per the
|
||
// unified model the resolver treats it like a terminal/PK
|
||
// candidate: it lands in `processing_keys` and the brute walker
|
||
// handles it.
|
||
let cfg = r#"
|
||
| DK | DEVICE_KEY 0x01010101010101010101010101010101 ; orphan, no position fields
|
||
| DK | DEVICE_KEY 0x02020202020202020202020202020202 | DEVICE_NODE 0x0800 | KEY_UV 0x00000400 | KEY_U_MASK_SHIFT 0x17 ; positioned MKBv01-MKBv48
|
||
| PK | 0x03030303030303030303030303030303 ; legacy PK row still works
|
||
"#;
|
||
let db = KeyDb::parse(cfg);
|
||
assert_eq!(
|
||
db.device_keys.len(),
|
||
1,
|
||
"positioned DK row should land in device_keys"
|
||
);
|
||
// Orphan DK + legacy PK row both end up in processing_keys.
|
||
assert_eq!(
|
||
db.processing_keys.len(),
|
||
2,
|
||
"orphan DK row + legacy PK row both belong in processing_keys"
|
||
);
|
||
assert_eq!(db.processing_keys[0][..4], [0x01, 0x01, 0x01, 0x01]);
|
||
assert_eq!(db.processing_keys[1][..4], [0x03, 0x03, 0x03, 0x03]);
|
||
}
|
||
|
||
#[test]
|
||
fn test_parse_orphan_dk_rejects_lines_with_position_fields() {
|
||
// The parser must NOT pick up a positioned DK row as an orphan
|
||
// (that would double-count). parse_orphan_dk explicitly checks.
|
||
let positioned = "| DK | DEVICE_KEY 0x02020202020202020202020202020202 | DEVICE_NODE 0x0800 | KEY_UV 0x00000400 | KEY_U_MASK_SHIFT 0x17";
|
||
assert!(
|
||
KeyDb::parse_orphan_dk(positioned).is_none(),
|
||
"positioned DK must not match orphan parser"
|
||
);
|
||
let orphan = "| DK | DEVICE_KEY 0x01010101010101010101010101010101";
|
||
let key = KeyDb::parse_orphan_dk(orphan).expect("orphan should parse");
|
||
assert_eq!(key[..4], [0x01, 0x01, 0x01, 0x01]);
|
||
}
|
||
|
||
#[test]
|
||
fn test_parse_host_cert() {
|
||
// 20-byte priv + 92-byte cert, all zeros — placeholders, not a key.
|
||
let line = format!(
|
||
"| HC | HOST_PRIV_KEY 0x{} | HOST_CERT 0x{} ; Revoked",
|
||
"00".repeat(20),
|
||
"00".repeat(92)
|
||
);
|
||
let hc = KeyDb::parse_host_cert(&line).unwrap();
|
||
assert_eq!(hc.cert.private_key, [0u8; 20]);
|
||
assert_eq!(hc.cert.certificate.len(), 92);
|
||
}
|
||
|
||
#[test]
|
||
fn test_parse_hex_rejects_non_ascii_without_panic() {
|
||
// A 4-byte UTF-8 scalar has byte-len 4 (passes the even check); the
|
||
// old &str-slice path panicked on the mid-codepoint boundary. The
|
||
// byte-wise parser must instead return None.
|
||
assert!(parse_hex("😀").is_none());
|
||
// Mixed: leading hex then a 2-byte UTF-8 scalar (byte-len even).
|
||
assert!(parse_hex("ABé").is_none());
|
||
// Sanity: well-formed hex still parses.
|
||
assert_eq!(parse_hex("0x00FF"), Some(vec![0x00, 0xFF]));
|
||
// Odd byte length still rejected.
|
||
assert!(parse_hex("ABC").is_none());
|
||
}
|
||
|
||
#[test]
|
||
fn test_hc2_before_hc_is_not_dropped() {
|
||
// An HC2 row appearing before any HC row must still land its AACS 2.0
|
||
// credentials on a HostCert rather than being silently discarded.
|
||
let cfg = format!(
|
||
"| HC2 | HOST_PRIV_KEY 0x{} | HOST_CERT 0x{}\n",
|
||
"00".repeat(32),
|
||
"00".repeat(132)
|
||
);
|
||
let db = KeyDb::parse(&cfg);
|
||
assert_eq!(
|
||
db.host_certs.len(),
|
||
1,
|
||
"HC2-only row must create a HostCert"
|
||
);
|
||
assert!(db.host_certs[0].cert.private_key_v2.is_some());
|
||
assert!(db.host_certs[0].cert.certificate_v2.is_some());
|
||
assert!(
|
||
db.host_certs[0].cert.certificate.is_empty(),
|
||
"v1 cert stays empty for an HC2-only carrier"
|
||
);
|
||
}
|
||
|
||
#[test]
|
||
fn test_hc2_after_hc_augments_existing() {
|
||
let cfg = format!(
|
||
"| HC | HOST_PRIV_KEY 0x{} | HOST_CERT 0x{}\n| HC2 | HOST_PRIV_KEY 0x{} | HOST_CERT 0x{}\n",
|
||
"00".repeat(20),
|
||
"00".repeat(92),
|
||
"00".repeat(32),
|
||
"00".repeat(132)
|
||
);
|
||
let db = KeyDb::parse(&cfg);
|
||
assert_eq!(db.host_certs.len(), 1, "HC2 augments the preceding HC");
|
||
assert_eq!(db.host_certs[0].cert.certificate.len(), 92);
|
||
assert!(db.host_certs[0].cert.certificate_v2.is_some());
|
||
}
|
||
|
||
#[test]
|
||
fn test_parse_host_cert_rejects_short_v1_cert() {
|
||
// A too-short AACS 1.0 cert must be dropped at parse time.
|
||
let line = format!(
|
||
"| HC | HOST_PRIV_KEY 0x{} | HOST_CERT 0x{}",
|
||
"00".repeat(20),
|
||
"00".repeat(10)
|
||
);
|
||
assert!(KeyDb::parse_host_cert(&line).is_none());
|
||
}
|
||
|
||
#[test]
|
||
fn test_parse_full_keydb() {
|
||
let path = match keydb_path() {
|
||
Some(p) => p,
|
||
None => return,
|
||
}; // skip if not available
|
||
|
||
let db = KeyDb::load(&path).unwrap();
|
||
|
||
assert_eq!(db.device_keys.len(), 4);
|
||
assert_eq!(db.processing_keys.len(), 3);
|
||
assert!(!db.host_certs.is_empty());
|
||
assert!(db.disc_entries.len() > 170000);
|
||
|
||
// Look up any disc entry carrying a full key set.
|
||
let entry = db
|
||
.disc_entries
|
||
.values()
|
||
.find(|e| e.vuk.is_some() && e.media_key.is_some() && !e.unit_keys.is_empty())
|
||
.expect("no disc entry with a full key set");
|
||
assert!(entry.media_key.is_some());
|
||
assert!(entry.vuk.is_some());
|
||
assert!(!entry.unit_keys.is_empty());
|
||
|
||
eprintln!(
|
||
"Parsed {} disc entries, {} DK, {} PK",
|
||
db.disc_entries.len(),
|
||
db.device_keys.len(),
|
||
db.processing_keys.len()
|
||
);
|
||
}
|
||
|
||
// ════════════════════════════════════════════════════════════════════
|
||
// Hardening additions
|
||
// ════════════════════════════════════════════════════════════════════
|
||
|
||
// ── parse_hex / parse_hex16 / parse_hex20 ──────────────────────────────
|
||
|
||
#[test]
|
||
fn parse_hex_strips_lower_and_upper_prefixes() {
|
||
// Both lower- and upper-case prefixes are stripped (trim_start_matches
|
||
// "0x" then "0X"). Without one of those strips a value would be off by
|
||
// a nibble or fail length checks.
|
||
assert_eq!(parse_hex("0xABCD"), Some(vec![0xAB, 0xCD]));
|
||
assert_eq!(parse_hex("0XABCD"), Some(vec![0xAB, 0xCD]));
|
||
assert_eq!(parse_hex("ABCD"), Some(vec![0xAB, 0xCD]));
|
||
}
|
||
|
||
#[test]
|
||
fn parse_hex_mixed_case_nibbles() {
|
||
// to_digit(16) accepts both cases.
|
||
assert_eq!(parse_hex("aB"), Some(vec![0xAB]));
|
||
assert_eq!(parse_hex("Ff00"), Some(vec![0xFF, 0x00]));
|
||
}
|
||
|
||
#[test]
|
||
fn parse_hex_rejects_non_hex_digit() {
|
||
// 'G' is not a hex digit → None (not silently 0).
|
||
assert!(parse_hex("0xGG").is_none());
|
||
assert!(parse_hex("12ZZ").is_none());
|
||
}
|
||
|
||
#[test]
|
||
fn parse_hex_empty_is_empty_vec() {
|
||
// Empty (or bare "0x") → Some(empty): even byte-length 0 passes, and
|
||
// there are no nibbles to reject. parse_hex16/20 then reject on length.
|
||
assert_eq!(parse_hex(""), Some(vec![]));
|
||
assert_eq!(parse_hex("0x"), Some(vec![]));
|
||
}
|
||
|
||
#[test]
|
||
fn parse_hex16_enforces_exactly_16_bytes() {
|
||
assert!(parse_hex16(&format!("0x{}", "00".repeat(15))).is_none());
|
||
assert!(parse_hex16(&format!("0x{}", "00".repeat(17))).is_none());
|
||
assert_eq!(
|
||
parse_hex16(&format!("0x{}", "00".repeat(16))),
|
||
Some([0u8; 16])
|
||
);
|
||
}
|
||
|
||
#[test]
|
||
fn parse_hex20_enforces_exactly_20_bytes() {
|
||
assert!(parse_hex20(&format!("0x{}", "00".repeat(19))).is_none());
|
||
assert_eq!(
|
||
parse_hex20(&format!("0x{}", "11".repeat(20))),
|
||
Some([0x11u8; 20])
|
||
);
|
||
}
|
||
|
||
// ── Disc entry field parsing ───────────────────────────────────────────
|
||
|
||
#[test]
|
||
fn disc_entry_hash_is_lowercased() {
|
||
// The disc_hash key is lowercased so HashMap lookups are
|
||
// case-insensitive (find_disc lowercases its query too).
|
||
let z32 = "00".repeat(16);
|
||
let line = format!("0xABCDEF = T | M | 0x{z32}");
|
||
let e = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert_eq!(e.disc_hash, "0xabcdef");
|
||
}
|
||
|
||
#[test]
|
||
fn disc_entry_title_kept_verbatim_even_with_parens() {
|
||
// Faithful copy: the title is kept VERBATIM, parens and all — NOT reduced
|
||
// to the parenthesised substring (which truncated real multi-paren titles
|
||
// and broke serialize→parse idempotence).
|
||
let line = "0x00 = RAW_NAME (Display Name) | M | 0x".to_string() + &"00".repeat(16);
|
||
let e = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert_eq!(e.title, "RAW_NAME (Display Name)");
|
||
}
|
||
|
||
#[test]
|
||
fn disc_entry_title_without_parens_uses_whole() {
|
||
let line = "0x00 = PlainTitle | M | 0x".to_string() + &"00".repeat(16);
|
||
let e = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert_eq!(e.title, "PlainTitle");
|
||
}
|
||
|
||
#[test]
|
||
fn disc_entry_malformed_parens_falls_back_to_whole_title() {
|
||
// The title is kept verbatim regardless of paren placement — a malformed
|
||
// ')' before '(' is not special-cased; the whole string is the title.
|
||
let line = "0x00 = FILM) (X | M | 0x".to_string() + &"00".repeat(16);
|
||
let e = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert_eq!(e.title, "FILM) (X");
|
||
}
|
||
|
||
#[test]
|
||
fn disc_entry_parses_all_tagged_fields() {
|
||
// M, I, V, U each populate their field. U accepts "n-0xKEY".
|
||
let m = "11".repeat(16);
|
||
let i = "22".repeat(16);
|
||
let v = "33".repeat(16);
|
||
let u = "44".repeat(16);
|
||
let line = format!("0xAA = T | M | 0x{m} | I | 0x{i} | V | 0x{v} | U | 2-0x{u}");
|
||
let e = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert_eq!(e.media_key, Some([0x11u8; 16]));
|
||
assert_eq!(e.vid, Some([0x22u8; 16]));
|
||
assert_eq!(e.vuk, Some([0x33u8; 16]));
|
||
assert_eq!(e.unit_keys, vec![(2, [0x44u8; 16])]);
|
||
}
|
||
|
||
#[test]
|
||
fn disc_entry_multiple_unit_keys_space_separated() {
|
||
// The U field carries space-separated "n-0xKEY" pairs.
|
||
let k1 = "01".repeat(16);
|
||
let k2 = "02".repeat(16);
|
||
let line = format!("0xAA = T | U | 1-0x{k1} 2-0x{k2}");
|
||
let e = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert_eq!(e.unit_keys, vec![(1, [0x01u8; 16]), (2, [0x02u8; 16])]);
|
||
}
|
||
|
||
#[test]
|
||
fn disc_entry_unit_key_strips_trailing_comment() {
|
||
// "U | 1-0xKEY ; comment" — the ';' comment must be stripped before
|
||
// splitting unit keys.
|
||
let k = "05".repeat(16);
|
||
let line = format!("0xAA = T | U | 1-0x{k} ; MKBv77 note");
|
||
let e = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert_eq!(e.unit_keys, vec![(1, [0x05u8; 16])]);
|
||
}
|
||
|
||
#[test]
|
||
fn disc_entry_skips_unparseable_unit_key_pair() {
|
||
// A bad nibble in one unit key drops just that pair (parse_hex16 →
|
||
// None), keeping the valid ones — no panic, no half-garbage key.
|
||
let good = "07".repeat(16);
|
||
let line = format!("0xAA = T | U | 1-0xZZ 2-0x{good}");
|
||
let e = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert_eq!(e.unit_keys, vec![(2, [0x07u8; 16])]);
|
||
}
|
||
|
||
#[test]
|
||
fn disc_entry_field_with_short_hex_is_none_not_panic() {
|
||
// A 30-hex-char (15-byte) M value fails parse_hex16 → media_key None.
|
||
let short = "00".repeat(15);
|
||
let line = format!("0xAA = T | M | 0x{short}");
|
||
let e = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert!(e.media_key.is_none());
|
||
}
|
||
|
||
// ── find_disc / find_vuk: prefix-agnostic lookup ───────────────────────
|
||
|
||
#[test]
|
||
fn find_disc_matches_with_and_without_0x_and_case() {
|
||
let v = "33".repeat(16);
|
||
let line = format!("0xABCDEF = T | V | 0x{v}");
|
||
let db = KeyDb::parse(&line);
|
||
// Stored key is "0xabcdef". Query in several shapes.
|
||
assert!(db.find_disc("0xABCDEF").is_some());
|
||
assert!(db.find_disc("ABCDEF").is_some()); // no prefix
|
||
assert!(db.find_disc("0xabcdef").is_some());
|
||
assert!(db.find_disc(" 0xAbCdEf ").is_some()); // padded + mixed case
|
||
assert_eq!(db.find_vuk("ABCDEF"), Some([0x33u8; 16]));
|
||
assert!(db.find_disc("0xDEADBE").is_none());
|
||
}
|
||
|
||
// ── Comments / blank lines / unknown lines ─────────────────────────────
|
||
|
||
#[test]
|
||
fn parse_ignores_comments_and_blank_lines() {
|
||
let cfg = "\n; a comment\n# another\n \n";
|
||
let db = KeyDb::parse(cfg);
|
||
assert!(db.device_keys.is_empty());
|
||
assert!(db.processing_keys.is_empty());
|
||
assert!(db.disc_entries.is_empty());
|
||
assert!(db.host_certs.is_empty());
|
||
}
|
||
|
||
#[test]
|
||
fn parse_empty_or_keyless_file_is_lenient_not_error() {
|
||
// parse() never errors; a keyless file is an empty KeyDb (documented
|
||
// contract — load() errors only on read failure, not empty content).
|
||
let db = KeyDb::parse("; nothing here\n");
|
||
assert_eq!(db.disc_entries.len(), 0);
|
||
}
|
||
|
||
#[test]
|
||
fn parse_device_key_requires_all_four_fields() {
|
||
// Missing KEY_U_MASK_SHIFT → parse_device_key returns None; with no
|
||
// position fields at all it would be an orphan DK instead. Here the
|
||
// line has DEVICE_NODE + KEY_UV but no shift → neither parser accepts
|
||
// it as a positioned DK, and parse_orphan_dk rejects it (has position
|
||
// fields), so nothing is loaded.
|
||
let line = "| DK | DEVICE_KEY 0x00000000000000000000000000000000 | DEVICE_NODE 0x0800 | KEY_UV 0x00000400";
|
||
assert!(KeyDb::parse_device_key(line).is_none());
|
||
let db = KeyDb::parse(line);
|
||
assert!(db.device_keys.is_empty());
|
||
assert!(db.processing_keys.is_empty());
|
||
}
|
||
|
||
#[test]
|
||
fn parse_host_cert_v2_rejects_wrong_priv_len_and_short_cert() {
|
||
// v2 priv must be exactly 32 bytes; cert must be >= 132.
|
||
let bad_priv = format!(
|
||
"| HC2 | HOST_PRIV_KEY 0x{} | HOST_CERT 0x{}",
|
||
"00".repeat(31),
|
||
"00".repeat(132)
|
||
);
|
||
assert!(KeyDb::parse_host_cert_v2(&bad_priv).is_none());
|
||
let short_cert = format!(
|
||
"| HC2 | HOST_PRIV_KEY 0x{} | HOST_CERT 0x{}",
|
||
"00".repeat(32),
|
||
"00".repeat(131)
|
||
);
|
||
assert!(KeyDb::parse_host_cert_v2(&short_cert).is_none());
|
||
}
|
||
|
||
#[test]
|
||
fn parse_processing_key_pk_row() {
|
||
// "| PK | 0x..." → 16-byte processing key. A trailing comment is
|
||
// stripped at ';'.
|
||
let line = format!("| PK | 0x{} ; MKBv64", "AB".repeat(16));
|
||
let pk = KeyDb::parse_processing_key(&line).unwrap();
|
||
assert_eq!(pk, [0xABu8; 16]);
|
||
}
|
||
|
||
// ── Disc-entry comment metadata: MKBv / VolumeSize / UHD ────────────────
|
||
|
||
#[test]
|
||
fn disc_entry_comment_uhd_mkb_and_volume_size() {
|
||
// Canonical UHD comment grammar.
|
||
let z = "00".repeat(16);
|
||
let line = format!(
|
||
"0xAA = T | M | 0x{z} | U | 1-0x{z} ; MKBv76/BEE/FindVUK 1.74 - VolumeSize: 81309007872 (UHD)"
|
||
);
|
||
let e = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert_eq!(e.mkb_version, Some(76));
|
||
assert_eq!(e.volume_size, Some(81_309_007_872));
|
||
assert!(e.is_uhd);
|
||
}
|
||
|
||
#[test]
|
||
fn disc_entry_comment_bd_is_not_uhd() {
|
||
// "(BD)" comment ⇒ is_uhd false, VolumeSize still parsed.
|
||
let z = "00".repeat(16);
|
||
let line =
|
||
format!("0xAA = T | M | 0x{z} ; MKBv68/FindVUK 1.24 - VolumeSize: 37672976384 (BD)");
|
||
let e = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert!(!e.is_uhd);
|
||
assert_eq!(e.volume_size, Some(37_672_976_384));
|
||
assert_eq!(e.mkb_version, Some(68));
|
||
}
|
||
|
||
#[test]
|
||
fn disc_entry_no_comment_all_metadata_none_and_fields_still_parse() {
|
||
// Regression: with NO trailing comment the three new fields default to
|
||
// None/false AND the U/M/I/V fields still parse correctly.
|
||
let m = "11".repeat(16);
|
||
let i = "22".repeat(16);
|
||
let v = "33".repeat(16);
|
||
let u = "44".repeat(16);
|
||
let line = format!("0xAA = T | M | 0x{m} | I | 0x{i} | V | 0x{v} | U | 2-0x{u}");
|
||
let e = KeyDb::parse_disc_entry(&line).unwrap();
|
||
assert_eq!(e.mkb_version, None);
|
||
assert_eq!(e.volume_size, None);
|
||
assert!(!e.is_uhd);
|
||
// Unchanged field parsing.
|
||
assert_eq!(e.media_key, Some([0x11u8; 16]));
|
||
assert_eq!(e.vid, Some([0x22u8; 16]));
|
||
assert_eq!(e.vuk, Some([0x33u8; 16]));
|
||
assert_eq!(e.unit_keys, vec![(2, [0x44u8; 16])]);
|
||
}
|
||
|
||
// ── Host-cert revocation: parse + host_certs(mkb) filter ────────────────
|
||
|
||
#[test]
|
||
fn host_cert_revoked_parses_and_filters_by_mkb() {
|
||
let revoked_line = format!(
|
||
"| HC | HOST_PRIV_KEY 0x{} | HOST_CERT 0x{} ; Revoked in MKBv72",
|
||
"00".repeat(20),
|
||
"11".repeat(92),
|
||
);
|
||
let hc = KeyDb::parse_host_cert(&revoked_line).unwrap();
|
||
assert_eq!(hc.revoked_at_mkb, Some(72));
|
||
|
||
let db = KeyDb::parse(&revoked_line);
|
||
assert_eq!(db.host_certs.len(), 1);
|
||
// Revoked in MKBv72 ⇒ unusable at gen >= 72, usable below it.
|
||
assert!(
|
||
db.host_certs(Some(72)).is_empty(),
|
||
"a cert revoked in MKBv72 must be excluded at gen 72"
|
||
);
|
||
assert_eq!(
|
||
db.host_certs(Some(71)).len(),
|
||
1,
|
||
"still usable at gen 71 (below the revocation generation)"
|
||
);
|
||
assert_eq!(
|
||
db.host_certs(None).len(),
|
||
1,
|
||
"unknown disc MKB ⇒ cannot filter ⇒ cert returned"
|
||
);
|
||
}
|
||
|
||
#[test]
|
||
fn host_cert_without_revocation_included_for_all_mkb() {
|
||
let line = format!(
|
||
"| HC | HOST_PRIV_KEY 0x{} | HOST_CERT 0x{}",
|
||
"00".repeat(20),
|
||
"22".repeat(92),
|
||
);
|
||
let hc = KeyDb::parse_host_cert(&line).unwrap();
|
||
assert_eq!(hc.revoked_at_mkb, None);
|
||
|
||
let db = KeyDb::parse(&line);
|
||
assert_eq!(db.host_certs(Some(99)).len(), 1);
|
||
assert_eq!(db.host_certs(Some(1)).len(), 1);
|
||
assert_eq!(db.host_certs(None).len(), 1);
|
||
}
|
||
|
||
#[test]
|
||
fn hc2_revocation_propagates_when_hc_has_none() {
|
||
// The HC line carries no annotation; the revocation lives on the HC2
|
||
// line. The combined cert must still be filtered by that generation
|
||
// rather than being treated as never-revoked.
|
||
let cfg = format!(
|
||
"| HC | HOST_PRIV_KEY 0x{} | HOST_CERT 0x{}\n| HC2 | HOST_PRIV_KEY 0x{} | HOST_CERT 0x{} ; Revoked in MKBv72\n",
|
||
"00".repeat(20),
|
||
"00".repeat(92),
|
||
"00".repeat(32),
|
||
"00".repeat(132),
|
||
);
|
||
let db = KeyDb::parse(&cfg);
|
||
assert_eq!(db.host_certs.len(), 1, "HC2 augments the preceding HC");
|
||
assert_eq!(db.host_certs[0].revoked_at_mkb, Some(72));
|
||
assert!(
|
||
db.host_certs(Some(72)).is_empty(),
|
||
"combined cert revoked in MKBv72 must be excluded at gen 72"
|
||
);
|
||
assert_eq!(
|
||
db.host_certs(Some(71)).len(),
|
||
1,
|
||
"still usable below gen 72"
|
||
);
|
||
}
|
||
|
||
// ── Standalone accessors: get_vid / get_uk / get_uks ────────────────────
|
||
|
||
#[test]
|
||
fn get_vid_hit_and_miss() {
|
||
let i = "22".repeat(16);
|
||
let line = format!("0xABCDEF = T | I | 0x{i}");
|
||
let db = KeyDb::parse(&line);
|
||
// Hit — prefix-agnostic, same form find_disc accepts.
|
||
assert_eq!(db.get_vid("ABCDEF"), Some([0x22u8; 16]));
|
||
assert_eq!(db.get_vid("0xabcdef"), Some([0x22u8; 16]));
|
||
// Miss.
|
||
assert_eq!(db.get_vid("0xDEADBE"), None);
|
||
}
|
||
|
||
#[test]
|
||
fn get_uk_hit_and_miss() {
|
||
let k1 = "01".repeat(16);
|
||
let k2 = "02".repeat(16);
|
||
let line = format!("0xABCDEF = T | U | 1-0x{k1} 2-0x{k2}");
|
||
let db = KeyDb::parse(&line);
|
||
assert_eq!(
|
||
db.get_uk("ABCDEF"),
|
||
vec![(1, [0x01u8; 16]), (2, [0x02u8; 16])]
|
||
);
|
||
// Miss ⇒ empty.
|
||
assert!(db.get_uk("0xDEADBE").is_empty());
|
||
}
|
||
|
||
#[test]
|
||
fn get_uks_lists_only_entries_with_unit_keys() {
|
||
let k = "03".repeat(16);
|
||
let v = "33".repeat(16);
|
||
let with_uk = format!("0xAAAA = T | U | 1-0x{k}");
|
||
// An entry with only a VUK (no unit keys) must be excluded.
|
||
let no_uk = format!("0xBBBB = T | V | 0x{v}");
|
||
let db = KeyDb::parse(&format!("{with_uk}\n{no_uk}\n"));
|
||
let uks = db.get_uks();
|
||
assert_eq!(uks.len(), 1, "only the entry with unit keys is listed");
|
||
assert_eq!(uks[0].0, "0xaaaa");
|
||
assert_eq!(uks[0].1, vec![(1, [0x03u8; 16])]);
|
||
}
|
||
|
||
// ════════════════════════════════════════════════════════════════════
|
||
// KEYDB-parser integration tests relocated from libfreemkv.
|
||
//
|
||
// These exercise the parser (KeyDb::load) end-to-end against a real
|
||
// keydb.cfg and feed its material into libfreemkv's AACS crypto
|
||
// (derive_vuk / decrypt_unit_try_keys). They live here now that the
|
||
// parser lives here. All are KEYDB_PATH-env-gated and no-op in CI when
|
||
// the env is unset; they must still COMPILE.
|
||
// ════════════════════════════════════════════════════════════════════
|
||
|
||
#[test]
|
||
fn test_vuk_derivation() {
|
||
// Pick any UHD entry with a known MK, VID, and VUK from KEYDB.
|
||
// VUK = AES-DEC(MK, VID) XOR VID
|
||
let path = match keydb_path() {
|
||
Some(p) => p,
|
||
None => return,
|
||
};
|
||
|
||
let db = KeyDb::load(&path).unwrap();
|
||
|
||
// Find a disc with both MK, vid, and VUK so we can verify derivation
|
||
let entry = db
|
||
.disc_entries
|
||
.values()
|
||
.find(|e| e.media_key.is_some() && e.vid.is_some() && e.vuk.is_some())
|
||
.expect("No disc with MK + VID + VUK");
|
||
|
||
let mk = entry.media_key.unwrap();
|
||
let vid = entry.vid.unwrap();
|
||
let expected_vuk = entry.vuk.unwrap();
|
||
|
||
let derived = libfreemkv::aacs::derive::derive_vuk(&mk, &vid);
|
||
assert_eq!(
|
||
derived, expected_vuk,
|
||
"VUK derivation failed for disc: {} (hash {})",
|
||
entry.title, entry.disc_hash
|
||
);
|
||
eprintln!("VUK derivation verified for: {}", entry.title);
|
||
}
|
||
|
||
#[test]
|
||
fn test_decrypt_real_unit() {
|
||
// Try decrypting a real encrypted aligned unit from a UHD sample.
|
||
// This disc is AACS 2.0 (BEE) so unit key alone won't work —
|
||
// we need bus decryption first. But this verifies the pipeline.
|
||
// Path comes from ENCRYPTED_UNIT_PATH (same env-driven pattern as the
|
||
// KEYDB_PATH fixture); no-ops in CI when unset.
|
||
let unit_path = match std::env::var("ENCRYPTED_UNIT_PATH").ok() {
|
||
Some(p) => std::path::PathBuf::from(p),
|
||
None => return,
|
||
};
|
||
if !unit_path.exists() {
|
||
return;
|
||
}
|
||
|
||
let original = std::fs::read(&unit_path).unwrap();
|
||
assert_eq!(original.len(), libfreemkv::aacs::content::ALIGNED_UNIT_LEN);
|
||
assert!(
|
||
libfreemkv::aacs::content::ts_sync_destroyed(&original),
|
||
"Unit should be encrypted"
|
||
);
|
||
|
||
let kp = match keydb_path() {
|
||
Some(p) => p,
|
||
None => return,
|
||
};
|
||
let db = KeyDb::load(&kp).unwrap();
|
||
|
||
// Candidate entries: any UHD entry that carries unit keys.
|
||
let candidate_entries: Vec<&DiscEntry> = db
|
||
.disc_entries
|
||
.values()
|
||
.filter(|e| !e.unit_keys.is_empty())
|
||
.collect();
|
||
|
||
eprintln!("Found {} entries with unit keys", candidate_entries.len());
|
||
|
||
// Try each entry's unit keys
|
||
for entry in &candidate_entries {
|
||
let keys: Vec<[u8; 16]> = entry.unit_keys.iter().map(|(_, k)| *k).collect();
|
||
let mut unit = original.clone();
|
||
|
||
if let Some(res) = libfreemkv::aacs::content::decrypt_unit_try_keys(&mut unit, &keys) {
|
||
eprintln!(
|
||
"SUCCESS: Decrypted with entry {} ({res:?})",
|
||
entry.disc_hash
|
||
);
|
||
// Count TS sync bytes
|
||
let ts = (0..32).filter(|&i| unit[4 + i * 192] == 0x47).count();
|
||
eprintln!(" TS sync bytes: {}/32", ts);
|
||
return;
|
||
}
|
||
}
|
||
|
||
// Expected: none work because this is AACS 2.0 and needs bus decryption first
|
||
eprintln!("No unit key worked (expected for AACS 2.0 BEE disc — needs read_data_key)");
|
||
}
|
||
|
||
#[test]
|
||
fn test_resolve_keys_vuk_path() {
|
||
// Test the full resolve chain using VUK path
|
||
let path = match keydb_path() {
|
||
Some(p) => p,
|
||
None => return,
|
||
};
|
||
let db = KeyDb::load(&path).unwrap();
|
||
|
||
// Find any BD entry that carries a VUK and unit keys, then exercise
|
||
// the lookup-by-hash + VUK-derivation chain against it.
|
||
let entry = db
|
||
.disc_entries
|
||
.values()
|
||
.find(|e| e.vuk.is_some() && !e.unit_keys.is_empty() && e.vid.is_some());
|
||
if entry.is_none() {
|
||
return;
|
||
}
|
||
let entry = entry.unwrap();
|
||
let vuk = entry.vuk.unwrap();
|
||
let vid = entry.vid.unwrap();
|
||
let hash_hex = format!("0x{}", entry.disc_hash.trim_start_matches("0x"));
|
||
|
||
// We need the actual Unit_Key_RO.inf from the disc to compute disc hash.
|
||
// Since we don't have it, we can at least test that the KEYDB lookup
|
||
// works with a known hash.
|
||
let found = db.find_disc(&hash_hex);
|
||
assert!(found.is_some());
|
||
assert_eq!(found.unwrap().vuk, Some(vuk));
|
||
|
||
// Verify VUK derivation if we have MK + VID
|
||
if let Some(mk) = entry.media_key {
|
||
let derived = libfreemkv::aacs::derive::derive_vuk(&mk, &vid);
|
||
assert_eq!(derived, vuk, "VUK derivation mismatch");
|
||
eprintln!("VUK derivation verified");
|
||
}
|
||
}
|
||
}
|