Files
libfreemkv/src/error.rs
T
Matthew Jackson bf9a69ec80 mux: thread halt into live AACS key-map resolution; cover Session arm
Round-2 follow-ups to 6d6e60f (inline base-map resolve on the live
single-pass Session/Live mux arms).

Fix 1 (halt threading) — the inline resolve chain sampled ciphertext off
the LIVE drive with no cancel token, so an operator /api/stop during key
resolution was not honored (the FMTS probe can issue hundreds of reads,
each able to stall to the 60s SCSI recovery timeout — violating the
"don't hammer a struggling live drive" rule). Add an optional
`halt: Option<&Halt>` to `resolve_mux_key_map`, `resolve_fmts_key_map`,
`resolve_inline_base_map`, and `Disc::resolve_content_key_map`, and poll
it at each loop boundary (FMTS anchor + per-index probe loops, multi-CPS
extent loop) — returning Err(Halted) promptly. Live/Session arms pass the
driver's halt; sweep/patch pass their own token (via Halt::from_arc);
file-backed probe/ISO callers pass None. Tested with a pre-cancelled halt
(Err Halted, no extent sampling) and a None-halt no-abort case;
mutation-verified (dropping the extent-loop check → Ok, not Err).

Fix 2 (Session-arm coverage) — the MuxInput::Session arm ran the same
resolve→install→decrypt sequence as Live but had NO end-to-end test
(DiscSession only exposed open(), which needs live hardware). Add a
#[cfg(test)] DiscSession::from_parts_for_test (injected reader + scanned
disc, no Drive), an end-to-end AACS decrypt test through the Session arm
(mutation-verified: dropping with_key_map → mux aborts), and a
missing-reader clean-error (not panic) test.

Fix 3 (cleanups) — io_error_code: remove the unreachable typed-Error
downcast branch (From<Error> for io::Error stringifies; no path builds an
io::Error holding a typed Error), keeping the stringify parse is_halt /
is_skippable_title_stub rely on. Add a resolve_keys_for test covering the
largest-title sampling branch. Document the patch wedge-exit coverage gap
(TODO) in passn_handler_ab.rs.
2026-07-24 09:04:19 -07:00

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//! Error types for libfreemkv.
//!
//! Every error is a code with structured data. No English text.
//! Applications map codes to localized messages.
//!
//! # Error Code Ranges
//!
//! | Range | Category |
//! |-------|----------|
//! | E1xxx | Device errors |
//! | E2xxx | Profile errors |
//! | E3xxx | Unlock errors |
//! | E4xxx | SCSI errors |
//! | E5xxx | I/O errors |
//! | E6xxx | Disc format errors |
//! | E7xxx | AACS errors |
//! | E8xxx | Keydb errors |
//! | E9xxx | Stream/mux errors |
// ── Error codes ─────────────────────────────────────────────────────────────
// Device (1xxx)
pub const E_DEVICE_NOT_FOUND: u16 = 1000;
pub const E_DEVICE_PERMISSION: u16 = 1001;
pub const E_DEVICE_NOT_READY: u16 = 1002;
pub const E_DEVICE_RESET_FAILED: u16 = 1003;
pub const E_SCSI_INTERFACE_UNAVAILABLE: u16 = 1004;
pub const E_DEVICE_LOCKED: u16 = 1005;
pub const E_IOKIT_PLUGIN_FAILED: u16 = 1006;
// Profile (2xxx)
pub const E_UNSUPPORTED_DRIVE: u16 = 2000;
// 2001: burned/retired — do not reuse.
pub const E_PROFILE_PARSE: u16 = 2002;
pub const E_UNSUPPORTED_PLATFORM: u16 = 2003;
pub const E_PLATFORM_NOT_IMPLEMENTED: u16 = 2004;
// Unlock (3xxx)
pub const E_UNLOCK_FAILED: u16 = 3000;
pub const E_SIGNATURE_MISMATCH: u16 = 3001;
// SCSI (4xxx)
pub const E_SCSI_ERROR: u16 = 4000;
pub const E_INVALID_CDB_LENGTH: u16 = 4001;
// I/O (5xxx)
pub const E_IO_ERROR: u16 = 5000;
// Disc format (6xxx)
pub const E_DISC_READ: u16 = 6000;
pub const E_MPLS_PARSE: u16 = 6001;
pub const E_CLPI_PARSE: u16 = 6002;
pub const E_UDF_NOT_FOUND: u16 = 6003;
// 6004: burned/retired — do not reuse.
pub const E_DISC_TITLE_RANGE: u16 = 6005;
// 6006: burned/retired — do not reuse.
pub const E_IFO_PARSE: u16 = 6007;
pub const E_MKV_INVALID: u16 = 6008;
pub const E_NO_STREAMS: u16 = 6009;
pub const E_HALTED: u16 = 6010;
pub const E_MAPFILE_INVALID: u16 = 6011;
pub const E_UDF_BUFFER_TOO_SMALL: u16 = 6012;
// AACS (7xxx)
pub const E_AACS_NO_KEYS: u16 = 7000;
pub const E_AACS_CERT_SHORT: u16 = 7001;
pub const E_AACS_AGID_ALLOC: u16 = 7002;
pub const E_AACS_CERT_REJECTED: u16 = 7003;
pub const E_AACS_CERT_READ: u16 = 7004;
pub const E_AACS_CERT_VERIFY: u16 = 7005;
pub const E_AACS_KEY_READ: u16 = 7006;
pub const E_AACS_KEY_REJECTED: u16 = 7007;
pub const E_AACS_KEY_VERIFY: u16 = 7008;
pub const E_AACS_VID_READ: u16 = 7009;
pub const E_AACS_VID_MAC: u16 = 7010;
pub const E_AACS_DATA_KEY: u16 = 7011;
// 7012: burned/retired — do not reuse.
pub const E_DECRYPT_FAILED: u16 = 7013;
pub const E_CSS_AUTH_FAILED: u16 = 7014;
pub const E_AACS_HOST_CERT_REJECTED: u16 = 7015;
pub const E_AACS_RAW_READ_UNSUPPORTED: u16 = 7016;
pub const E_AACS_VID_UNAVAILABLE: u16 = 7017;
pub const E_AACS_MK_UNAVAILABLE: u16 = 7018;
pub const E_AACS_VUK_NOT_IN_KEYDB: u16 = 7019;
pub const E_DRIVE_PROFILE_MISSING: u16 = 7020;
pub const E_VID_CDB_UNAVAILABLE: u16 = 7021;
pub const E_NO_DISC_KEY: u16 = 7022;
pub const E_CSS_KEY_MISSING: u16 = 7023;
pub const E_AACS_NO_HOST_CERT: u16 = 7024;
pub const E_AACS_BUS_KEY_UNAVAILABLE: u16 = 7025;
pub const E_FMTS_KEY_MISSING: u16 = 7026;
// Keydb (8xxx)
pub const E_KEYDB_CONNECT: u16 = 8000;
pub const E_KEYDB_HTTP: u16 = 8001;
pub const E_KEYDB_INVALID: u16 = 8002;
pub const E_KEYDB_WRITE: u16 = 8003;
pub const E_KEYDB_PARSE: u16 = 8004;
pub const E_KEYDB_LOAD: u16 = 8005;
pub const E_KEYDB_UNSUPPORTED_SCHEME: u16 = 8006;
pub const E_KEYDB_TOO_MANY_REDIRECTS: u16 = 8007;
// Stream/mux (9xxx)
pub const E_STREAM_READ_ONLY: u16 = 9000;
pub const E_STREAM_WRITE_ONLY: u16 = 9001;
pub const E_STREAM_URL_INVALID: u16 = 9002;
pub const E_STREAM_URL_MISSING_PATH: u16 = 9003;
pub const E_STREAM_URL_MISSING_PORT: u16 = 9004;
pub const E_PES_FRAME_TOO_LARGE: u16 = 9005;
pub const E_PES_INVALID_MAGIC: u16 = 9006;
pub const E_ISO_TOO_LARGE: u16 = 9007;
pub const E_NO_METADATA: u16 = 9008;
pub const E_DISC_URL_NOT_DIRECT: u16 = 9009;
/// `--raw` given with a `dir://` destination (raw + decrypted-tree is
/// a contradiction; raw bytes go to `iso://`).
pub const E_DIR_RAW_REJECTED: u16 = 9019;
pub const E_HEVC_PARAM_PARSE: u16 = 9010;
pub const E_MUX_TRACK_RANGE: u16 = 9011;
pub const E_FMP4_UNIMPLEMENTED: u16 = 9012;
pub const E_DEMUX_THREAD_PANICKED: u16 = 9013;
pub const E_PIPELINE_JOIN_TIMEOUT: u16 = 9014;
pub const E_PIPELINE_CONSUMER_PANICKED: u16 = 9015;
pub const E_SWEEP_CONSUMER_GONE: u16 = 9016;
pub const E_PES_TRACK_TOO_LARGE: u16 = 9017;
pub const E_PIPELINE_CONSUMER_GONE: u16 = 9018;
pub const E_DISC_CAPACITY_OVERFLOW: u16 = 9020;
/// `--multipass` given with a `dir://` destination (`dir://` is 1-shot;
/// recovery is the `iso://` path's job).
pub const E_DIR_MULTIPASS_REJECTED: u16 = 9024;
/// A non-disc (byte-stream) source was routed into `dir://`, which needs a
/// filesystem (only `disc://` / `iso://` qualify).
pub const E_DIR_SOURCE_UNSUPPORTED: u16 = 9025;
/// `dir://` target directory is non-empty and `--force` was not given.
pub const E_DIR_NOT_EMPTY: u16 = 9026;
/// `dir://` target filesystem free space is below the sum of file extents.
pub const E_DIR_INSUFFICIENT_SPACE: u16 = 9027;
/// Two distinct disc paths sanitize to the same host path (would silently
/// overwrite — surfaced as a hard error instead).
pub const E_DIR_NAME_COLLISION: u16 = 9028;
/// A `dir://` create_dir_all / file write / rename failed.
pub const E_DIR_WRITE_FAILED: u16 = 9029;
pub const E_M2TS_PACKET_MALFORMED: u16 = 9021;
/// A `network://` output target resolved to no address that is safe to
/// connect to (every resolved IP was loopback / private / link-local /
/// multicast / unspecified). Closes the DNS-rebinding SSRF window.
pub const E_NETWORK_ADDR_BLOCKED: u16 = 9022;
/// A muxer's `finish()` was called after zero frames were emitted — the
/// output would be a header-only container with no media. Surfaced so a
/// zero-frame mux (undecryptable input, fully-unreadable title, every
/// frame dropped before the first keyframe) cannot report success.
pub const E_MUX_EMPTY: u16 = 9023;
pub const E_EXTENT_NOT_UNIT_ALIGNED: u16 = 9030;
/// `mp4://` output but the title has no (primary) video track to carry.
pub const E_MP4_NO_VIDEO_TRACK: u16 = 9048;
/// `mp4://` SOURCE file is malformed/truncated (bad box structure, sample table,
/// or offsets) — the MP4 demuxer could not parse it.
pub const E_MP4_INVALID: u16 = 9049;
/// `mp4://` video track is missing its codec-configuration record
/// (`hvcC`/`avcC`), without which the sample entry can't be written.
pub const E_MP4_MISSING_CODEC_PRIVATE: u16 = 9050;
/// READ CAPACITY returned a short or overflowing transfer.
pub const E_DISC_CAPACITY_MALFORMED: u16 = 9047;
// ── Error enum ──────────────────────────────────────────────────────────────
/// Structured error with numeric code and context data. No English text.
///
/// Marked `#[non_exhaustive]`: downstream crates must not match it
/// exhaustively, so new variants can be added without a semver break.
#[derive(Debug)]
#[non_exhaustive]
pub enum Error {
// Device (1xxx)
DeviceNotFound {
path: String,
},
DevicePermission {
path: String,
},
DeviceNotReady {
path: String,
},
DeviceResetFailed {
path: String,
},
/// Platform-specific SCSI interface couldn't be obtained from the OS
/// (macOS: `SCSITaskDeviceInterface` unavailable). The `path` field
/// carries the device path; no English commentary on the failure mode.
ScsiInterfaceUnavailable {
path: String,
},
/// Device is held by another process / kernel state. `kr` is the
/// platform return code (macOS IOReturn, Linux errno-equivalent).
DeviceLocked {
path: String,
kr: u32,
},
/// macOS IOKit plugin couldn't be created for this device. `kr` is
/// the IOReturn code from `IOCreatePlugInInterfaceForService`.
IoKitPluginFailed {
path: String,
kr: u32,
},
// Profile (2xxx)
UnsupportedDrive {
vendor_id: String,
product_id: String,
product_revision: String,
},
ProfileParse,
/// SCSI transport was requested on an OS without a backend
/// implementation. `target` is the `std::env::consts::OS` value.
UnsupportedPlatform {
target: String,
},
/// Drive matched a known platform that we haven't implemented yet
/// (e.g. Renesas firmware). `platform` is a stable identifier.
PlatformNotImplemented {
platform: String,
},
// Unlock (3xxx)
UnlockFailed,
SignatureMismatch {
expected: [u8; 4],
got: [u8; 4],
},
// SCSI (4xxx)
/// SCSI command failed.
///
/// `opcode` is the failing CDB byte 0. `status` is the raw SCSI
/// status byte: `0x02` = CHECK CONDITION (drive replied with sense
/// data), `0xFF` = libfreemkv-synthesised sentinel meaning "no SCSI
/// status delivered" (kernel timeout, USB bridge wedge, IOKit
/// service failure). `sense` carries the drive's SPC-4 sense triple
/// when the drive replied; `None` for transport-layer failures.
///
/// Recommended dispatch (callers shouldn't pattern-match raw
/// fields):
/// - [`Error::is_scsi_transport_failure`] — bail; bridge/transport wedge
/// - [`Error::is_marginal_read`] — drive said this read was marginal; smaller block may recover
/// - [`Error::scsi_sense`] — borrow the sense triple for finer routing ([`ScsiSense::is_medium_error`] etc.)
ScsiError {
opcode: u8,
status: u8,
sense: Option<crate::scsi::ScsiSense>,
},
/// CDB supplied to the transport exceeded the maximum supported length.
/// `len` is the supplied CDB length; `max` is the transport's limit.
InvalidCdbLength {
len: usize,
max: usize,
},
// I/O (5xxx)
IoError {
source: std::io::Error,
},
// Disc format (6xxx)
DiscRead {
sector: u64,
status: Option<u8>,
sense: Option<crate::scsi::ScsiSense>,
},
/// Drive was halted by caller.
Halted,
MplsParse,
ClpiParse,
UdfNotFound {
path: String,
},
/// A `SectorSource` caller passed a destination buffer smaller than one
/// 2048-byte sector. A contract violation on the public reader API —
/// returned instead of panicking on the slice.
UdfBufferTooSmall,
DiscTitleRange {
index: usize,
count: usize,
},
IfoParse,
MkvInvalid,
NoStreams,
/// ddrescue mapfile parse failed. `kind` is a stable, language-neutral
/// identifier (e.g. `"status_char"`, `"hex"`); not a translatable
/// English message.
MapfileInvalid {
kind: &'static str,
},
// AACS (7xxx)
AacsNoKeys,
AacsCertShort,
AacsAgidAlloc,
AacsCertRejected,
AacsCertRead,
AacsCertVerify,
AacsKeyRead,
AacsKeyRejected,
AacsKeyVerify,
AacsVidRead,
AacsVidMac,
AacsDataKey,
DecryptFailed,
CssAuthFailed,
/// Host certificate rejected by the drive's revocation list (HRL hit).
/// All available host certs failed mutual auth on this drive.
AacsHostCertRejected,
/// Drive cannot be put into raw-read mode and standard AACS cert
/// auth failed. No path to decryption remains.
AacsRawReadUnsupported,
/// Volume ID could not be retrieved from the drive (neither via cert
/// auth nor via the alternate VID read path). Downstream of step 1
/// of the AACS chain.
AacsVidUnavailable,
/// No available path produced a Media Key (no MK+VID in keydb, no
/// PK match, no DK derivation).
AacsMkUnavailable,
/// Disc-hash lookup in the keydb missed and no other path is
/// available (typically because VID is missing).
AacsVukNotInKeydb,
/// Drive identity did not match any bundled profile; per-drive CDB
/// templates aren't available so the OEM VID retrieval path can't
/// run.
DriveProfileMissing,
/// Drive's profile is present but doesn't carry a VID-retrieval CDB
/// template (older profile blob, or a drive class without an OEM
/// VID path).
VidCdbUnavailable,
/// The disc is AACS-encrypted and decryption was requested, but key
/// resolution produced no usable key for it — so muxing would emit
/// undecryptable garbage. Distinct from [`Error::KeydbLoad`] (no keydb
/// file at all): a keydb may be present but lack an entry for this disc.
/// `disc_hash` is the 40-hex SHA1 of `Unit_Key_RO.inf` (no `0x` prefix)
/// so the application can name the disc; empty if the hash wasn't
/// captured at scan.
NoDiscKey {
disc_hash: String,
},
/// The disc is CSS-encrypted and decryption was requested, but the
/// known-plaintext crack resolved no usable title key for the chosen
/// title (e.g. a multi-VTS DVD where the title's VTS could not be
/// re-cracked). Muxing would emit scrambled ciphertext, so the caller
/// fails fast instead. CSS analogue of [`Error::NoDiscKey`].
CssKeyMissing,
/// The live-drive AACS cert-auth handshake (the OEM/AACS baseline route)
/// could not run because NO host certificate was available from any key
/// source. Host certs are keysource-served, never compiled in, so without
/// a keysource that supplies one the OEM route fails gracefully here — this
/// is the intended outcome, not a panic. Resolution still proceeds with a
/// zero Volume ID and relies on the path-1 disc-hash → VUK lookup, so the
/// error is dropped when that lookup hits. `path` carries the sentinel
/// `<no host cert>` (mirroring [`Error::KeydbLoad`]'s sentinel) so a CLI can
/// render "No Host Certs Found."
AacsNoHostCert {
path: String,
},
/// A bus-encrypted disc (AACS 2.0 / UHD, Content Certificate bus-encryption
/// bit set) was scanned on a live drive, the Volume ID was obtained, but no
/// `read_data_key` (bus key) was produced — so the on-disc bytes are still
/// bus-encrypted and would decrypt to garbage. The bus key is derivable ONLY
/// from the AACS host-certificate cert-auth handshake; a VID-only OEM unlock
/// path (which returns no bus key) is insufficient for such a disc. Surfaced
/// instead of silently producing a corrupt rip. NOT raised for AACS 1.0 BD
/// (no bus encryption, `read_data_key` legitimately absent) nor for
/// file-backed (ISO) scans, where bus encryption was already removed at read
/// time and no handshake runs.
AacsBusKeyUnavailable,
/// AACS 2.1 (FMTS) disc carries forensic variant segments, but no segment
/// (variant) key is available to open them. Raised UPFRONT — before the mux —
/// exactly like a missing unit key, so a 2.1 disc that would rip with holes is
/// refused rather than silently producing a forensic-holed output. (The mux
/// resolves the full forensic key set up front; a resolution gap fails here.)
FmtsKeyMissing,
// Keydb (8xxx)
KeydbConnect {
host: String,
},
KeydbHttp {
status: u16,
},
KeydbInvalid,
KeydbWrite {
path: String,
},
KeydbParse,
KeydbLoad {
path: String,
},
/// A redirect (or the configured URL) targets a scheme this
/// dependency-light HTTP client cannot fetch (e.g. `https://`).
/// Carries the offending scheme for diagnostics.
KeydbUnsupportedScheme {
scheme: String,
},
/// The redirect chain exceeded the follow limit.
KeydbTooManyRedirects,
// Stream/mux (9xxx)
StreamReadOnly,
StreamWriteOnly,
StreamUrlInvalid {
url: String,
},
StreamUrlMissingPath {
scheme: String,
},
StreamUrlMissingPort {
addr: String,
},
/// A `network://` output host resolved to no connectable address —
/// every resolved IP was loopback / private / link-local / multicast /
/// unspecified. Carries the offending `host:port`. Re-checked at
/// connect time to close the DNS-rebinding TOCTOU.
NetworkAddrBlocked {
addr: String,
},
/// A muxer's `finish()` was reached after zero frames were written, so
/// the output would be a header-only container with no media. Surfaced
/// (instead of writing a valid-but-empty file and reporting success) so
/// a zero-frame mux — undecryptable input, a fully-unreadable title, or
/// every frame dropped before the first keyframe — fails loudly. The
/// `m2ts://` analogue of [`Error::MkvInvalid`]'s zero-frame guard.
MuxEmpty,
/// `mp4://` target title has no primary video track to mux.
Mp4NoVideoTrack,
/// `mp4://` source file is malformed/truncated — the MP4 demuxer failed.
Mp4Invalid,
/// `mp4://` video track is missing its `hvcC`/`avcC` configuration record.
Mp4MissingCodecPrivate,
PesFrameTooLarge {
size: usize,
},
PesInvalidMagic,
/// PES frame track index exceeds the 1-byte on-wire field (> 255).
/// Carries the offending index. Distinct from [`Error::PesInvalidMagic`],
/// which signals corrupt input on the read side.
PesTrackTooLarge {
track: usize,
},
IsoTooLarge {
path: String,
},
NoMetadata,
/// `disc://` URLs aren't openable through `input()` — callers must use
/// `Drive::open() + Disc::scan() + DiscStream::new()` directly. This
/// is a structural API constraint, not a parse failure.
DiscUrlNotDirect,
/// A non-empty `HEVCDecoderConfigurationRecord` (hvcC) was supplied to
/// a muxer but failed to parse into any VPS/SPS/PPS NAL — emitting the
/// stream without parameter sets would yield an undecodable result.
HevcParamParse,
/// A muxer `write_frame` / `set_codec_private` was given a track index
/// beyond the configured PID/track count.
MuxTrackRange {
track: usize,
tracks: usize,
},
/// The fragmented-MP4 sink cannot emit media — `moof`/`mdat` framing is
/// not implemented. Surfaced instead of silently discarding samples.
Fmp4Unimplemented,
/// A worker thread in the threaded mux pipeline terminated without
/// sending its terminal sentinel — i.e. it panicked or was dropped
/// mid-stream. Surfaced so a parser/demux panic is never silently
/// reported to the caller as a clean end-of-stream (which would
/// truncate output without any error).
DemuxThreadPanicked,
/// A pipeline `join()` exceeded its deadline while waiting for the
/// consumer thread to drain. The consumer is intentionally leaked;
/// the caller should fall back to a degraded path.
PipelineJoinTimeout,
/// The pipeline consumer thread panicked. The original panic
/// payload is not preserved (no English text in the library); it is
/// logged at the panic site instead.
PipelineConsumerPanicked,
/// A pipeline producer's `send` failed because the consumer thread
/// has already terminated (the receiver end is gone).
SweepConsumerGone,
/// A producer thread tried to hand work to its pipeline consumer
/// (sweep / patch sink) but the consumer thread had already
/// terminated (panicked or dropped the receiver). The producer
/// surfaces this so the outer pass can abort cleanly instead of
/// blocking on a dead channel.
PipelineConsumerGone,
/// READ CAPACITY(10) reported a last-LBA of `0xFFFFFFFF` — the SPC
/// sentinel meaning "capacity exceeds 32-bit addressing". Adding 1 to
/// derive the sector count would overflow `u32`. Reachable from
/// disc-reported bytes and synthetic [`crate::sector::SectorSource`]
/// fixtures.
DiscCapacityOverflow,
/// An extent fed to the prefetch producer has a `sector_count`
/// whose trailing 1-2 sectors cannot form a complete AACS aligned
/// unit (3 sectors / 6144 bytes). Emitting that tail as a
/// standalone batch would hand the decrypt step a sub-unit chunk
/// it silently leaves encrypted. The producer surfaces this rather
/// than emit still-encrypted bytes.
ExtentNotUnitAligned,
/// An MPEG-TS packet under construction violated the 188-byte fixed
/// size (over-long adaptation field, overflowing payload, or a
/// short/mis-assembled packet). Indicates a muxer invariant break,
/// not untrusted input — surfaced instead of writing a corrupt
/// transport stream.
M2tsPacketMalformed,
/// READ CAPACITY transferred fewer than 4 bytes, or the decoded
/// last-LBA + 1 overflowed `u32`. Either case means the capacity
/// response is unusable; no English commentary.
DiscCapacityMalformed,
/// `--raw` was given with a `dir://` destination. An encrypted file
/// tree is useless; raw bytes belong in `iso://`.
DirRawRejected,
/// `--multipass` was given with a `dir://` destination. `dir://` is
/// 1-shot; recovery is the `iso://` multipass path's job.
DirMultipassRejected,
/// A non-disc (byte-stream) source was routed into `dir://`, which
/// requires a filesystem (only `disc://` / `iso://` qualify).
DirSourceUnsupported,
/// The `dir://` target directory is non-empty and `--force` was not
/// given. Mixing two discs' trees is refused by default.
DirNotEmpty,
/// The `dir://` target filesystem's free space is below the sum of
/// the file extents to extract. Carries required / available bytes.
DirInsufficientSpace {
required: u64,
available: u64,
},
/// Two distinct disc paths sanitize to the same host path. Surfaced
/// as a hard error rather than a silent overwrite. Carries the
/// colliding host component.
DirNameCollision {
host: String,
},
/// A `dir://` create_dir_all / file write / rename failed. Carries
/// the underlying errno when present.
DirWriteFailed {
errno: Option<i32>,
},
}
impl Error {
pub fn code(&self) -> u16 {
match self {
Error::DeviceNotFound { .. } => E_DEVICE_NOT_FOUND,
Error::DevicePermission { .. } => E_DEVICE_PERMISSION,
Error::DeviceNotReady { .. } => E_DEVICE_NOT_READY,
Error::DeviceResetFailed { .. } => E_DEVICE_RESET_FAILED,
Error::ScsiInterfaceUnavailable { .. } => E_SCSI_INTERFACE_UNAVAILABLE,
Error::DeviceLocked { .. } => E_DEVICE_LOCKED,
Error::IoKitPluginFailed { .. } => E_IOKIT_PLUGIN_FAILED,
Error::UnsupportedDrive { .. } => E_UNSUPPORTED_DRIVE,
Error::ProfileParse => E_PROFILE_PARSE,
Error::UnsupportedPlatform { .. } => E_UNSUPPORTED_PLATFORM,
Error::PlatformNotImplemented { .. } => E_PLATFORM_NOT_IMPLEMENTED,
Error::UnlockFailed => E_UNLOCK_FAILED,
Error::SignatureMismatch { .. } => E_SIGNATURE_MISMATCH,
Error::ScsiError { .. } => E_SCSI_ERROR,
Error::InvalidCdbLength { .. } => E_INVALID_CDB_LENGTH,
Error::IoError { .. } => E_IO_ERROR,
Error::DiscRead { .. } => E_DISC_READ,
Error::Halted => E_HALTED,
Error::MplsParse => E_MPLS_PARSE,
Error::ClpiParse => E_CLPI_PARSE,
Error::UdfNotFound { .. } => E_UDF_NOT_FOUND,
Error::UdfBufferTooSmall => E_UDF_BUFFER_TOO_SMALL,
Error::DiscTitleRange { .. } => E_DISC_TITLE_RANGE,
Error::IfoParse => E_IFO_PARSE,
Error::MkvInvalid => E_MKV_INVALID,
Error::NoStreams => E_NO_STREAMS,
Error::MapfileInvalid { .. } => E_MAPFILE_INVALID,
Error::AacsNoKeys => E_AACS_NO_KEYS,
Error::AacsCertShort => E_AACS_CERT_SHORT,
Error::AacsAgidAlloc => E_AACS_AGID_ALLOC,
Error::AacsCertRejected => E_AACS_CERT_REJECTED,
Error::AacsCertRead => E_AACS_CERT_READ,
Error::AacsCertVerify => E_AACS_CERT_VERIFY,
Error::AacsKeyRead => E_AACS_KEY_READ,
Error::AacsKeyRejected => E_AACS_KEY_REJECTED,
Error::AacsKeyVerify => E_AACS_KEY_VERIFY,
Error::AacsVidRead => E_AACS_VID_READ,
Error::AacsVidMac => E_AACS_VID_MAC,
Error::AacsDataKey => E_AACS_DATA_KEY,
Error::DecryptFailed => E_DECRYPT_FAILED,
Error::CssAuthFailed => E_CSS_AUTH_FAILED,
Error::AacsHostCertRejected => E_AACS_HOST_CERT_REJECTED,
Error::AacsRawReadUnsupported => E_AACS_RAW_READ_UNSUPPORTED,
Error::AacsVidUnavailable => E_AACS_VID_UNAVAILABLE,
Error::AacsMkUnavailable => E_AACS_MK_UNAVAILABLE,
Error::AacsVukNotInKeydb => E_AACS_VUK_NOT_IN_KEYDB,
Error::DriveProfileMissing => E_DRIVE_PROFILE_MISSING,
Error::VidCdbUnavailable => E_VID_CDB_UNAVAILABLE,
Error::NoDiscKey { .. } => E_NO_DISC_KEY,
Error::CssKeyMissing => E_CSS_KEY_MISSING,
Error::AacsNoHostCert { .. } => E_AACS_NO_HOST_CERT,
Error::AacsBusKeyUnavailable => E_AACS_BUS_KEY_UNAVAILABLE,
Error::FmtsKeyMissing => E_FMTS_KEY_MISSING,
Error::KeydbConnect { .. } => E_KEYDB_CONNECT,
Error::KeydbHttp { .. } => E_KEYDB_HTTP,
Error::KeydbInvalid => E_KEYDB_INVALID,
Error::KeydbWrite { .. } => E_KEYDB_WRITE,
Error::KeydbParse => E_KEYDB_PARSE,
Error::KeydbLoad { .. } => E_KEYDB_LOAD,
Error::KeydbUnsupportedScheme { .. } => E_KEYDB_UNSUPPORTED_SCHEME,
Error::KeydbTooManyRedirects => E_KEYDB_TOO_MANY_REDIRECTS,
Error::StreamReadOnly => E_STREAM_READ_ONLY,
Error::StreamWriteOnly => E_STREAM_WRITE_ONLY,
Error::StreamUrlInvalid { .. } => E_STREAM_URL_INVALID,
Error::StreamUrlMissingPath { .. } => E_STREAM_URL_MISSING_PATH,
Error::StreamUrlMissingPort { .. } => E_STREAM_URL_MISSING_PORT,
Error::NetworkAddrBlocked { .. } => E_NETWORK_ADDR_BLOCKED,
Error::MuxEmpty => E_MUX_EMPTY,
Error::Mp4NoVideoTrack => E_MP4_NO_VIDEO_TRACK,
Error::Mp4Invalid => E_MP4_INVALID,
Error::Mp4MissingCodecPrivate => E_MP4_MISSING_CODEC_PRIVATE,
Error::PesFrameTooLarge { .. } => E_PES_FRAME_TOO_LARGE,
Error::PesInvalidMagic => E_PES_INVALID_MAGIC,
Error::PesTrackTooLarge { .. } => E_PES_TRACK_TOO_LARGE,
Error::IsoTooLarge { .. } => E_ISO_TOO_LARGE,
Error::NoMetadata => E_NO_METADATA,
Error::DiscUrlNotDirect => E_DISC_URL_NOT_DIRECT,
Error::HevcParamParse => E_HEVC_PARAM_PARSE,
Error::MuxTrackRange { .. } => E_MUX_TRACK_RANGE,
Error::Fmp4Unimplemented => E_FMP4_UNIMPLEMENTED,
Error::DemuxThreadPanicked => E_DEMUX_THREAD_PANICKED,
Error::PipelineJoinTimeout => E_PIPELINE_JOIN_TIMEOUT,
Error::PipelineConsumerPanicked => E_PIPELINE_CONSUMER_PANICKED,
Error::SweepConsumerGone => E_SWEEP_CONSUMER_GONE,
Error::PipelineConsumerGone => E_PIPELINE_CONSUMER_GONE,
Error::DiscCapacityOverflow => E_DISC_CAPACITY_OVERFLOW,
Error::ExtentNotUnitAligned => E_EXTENT_NOT_UNIT_ALIGNED,
Error::M2tsPacketMalformed => E_M2TS_PACKET_MALFORMED,
Error::DiscCapacityMalformed => E_DISC_CAPACITY_MALFORMED,
Error::DirRawRejected => E_DIR_RAW_REJECTED,
Error::DirMultipassRejected => E_DIR_MULTIPASS_REJECTED,
Error::DirSourceUnsupported => E_DIR_SOURCE_UNSUPPORTED,
Error::DirNotEmpty => E_DIR_NOT_EMPTY,
Error::DirInsufficientSpace { .. } => E_DIR_INSUFFICIENT_SPACE,
Error::DirNameCollision { .. } => E_DIR_NAME_COLLISION,
Error::DirWriteFailed { .. } => E_DIR_WRITE_FAILED,
}
}
}
/// Display: "E{code}" with structured data. No English words.
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Error::DeviceNotFound { path } => write!(f, "E{}: {}", self.code(), path),
Error::DevicePermission { path } => write!(f, "E{}: {}", self.code(), path),
Error::DeviceNotReady { path } => write!(f, "E{}: {}", self.code(), path),
Error::DeviceResetFailed { path } => write!(f, "E{}: {}", self.code(), path),
Error::ScsiInterfaceUnavailable { path } => write!(f, "E{}: {}", self.code(), path),
Error::DeviceLocked { path, kr } => {
write!(f, "E{}: {} 0x{:08x}", self.code(), path, kr)
}
Error::IoKitPluginFailed { path, kr } => {
write!(f, "E{}: {} 0x{:08x}", self.code(), path, kr)
}
Error::UnsupportedPlatform { target } => {
write!(f, "E{}: {}", self.code(), target)
}
Error::PlatformNotImplemented { platform } => {
write!(f, "E{}: {}", self.code(), platform)
}
Error::MapfileInvalid { kind } => {
write!(f, "E{}: {}", self.code(), kind)
}
Error::UnsupportedDrive {
vendor_id,
product_id,
product_revision,
} => write!(
f,
"E{}: {} {} {}",
self.code(),
vendor_id.trim(),
product_id.trim(),
product_revision.trim()
),
Error::SignatureMismatch { expected, got } => write!(
f,
"E{}: {:02x}{:02x}{:02x}{:02x}!={:02x}{:02x}{:02x}{:02x}",
self.code(),
expected[0],
expected[1],
expected[2],
expected[3],
got[0],
got[1],
got[2],
got[3]
),
Error::ScsiError {
opcode,
status,
sense,
} => match sense {
Some(s) => write!(
f,
"E{}: 0x{:02x}/0x{:02x}/0x{:02x}/0x{:02x}/0x{:02x}",
self.code(),
opcode,
status,
s.sense_key,
s.asc,
s.ascq,
),
None => write!(f, "E{}: 0x{:02x}/0x{:02x}", self.code(), opcode, status,),
},
// Language-neutral: std::io::Error's Display is English
// ("permission denied"); emit the raw OS errno when present,
// else the ErrorKind debug name (an identifier, not prose).
Error::IoError { source } => match source.raw_os_error() {
Some(errno) => write!(f, "E{}: {}", self.code(), errno),
None => write!(f, "E{}: {:?}", self.code(), source.kind()),
},
Error::DiscRead {
sector,
status,
sense,
} => match (status, sense) {
(Some(st), Some(s)) => write!(
f,
"E{}: {} 0x{:02x}/0x{:02x}/0x{:02x}/0x{:02x}",
self.code(),
sector,
st,
s.sense_key,
s.asc,
s.ascq,
),
(Some(st), None) => write!(f, "E{}: {} 0x{:02x}", self.code(), sector, st,),
(None, Some(s)) => write!(
f,
"E{}: {} 0x{:02x}/0x{:02x}/0x{:02x}",
self.code(),
sector,
s.sense_key,
s.asc,
s.ascq,
),
(None, None) => write!(f, "E{}: {}", self.code(), sector),
},
Error::Halted => write!(f, "E{}", self.code()),
Error::UdfNotFound { path } => write!(f, "E{}: {}", self.code(), path),
Error::DiscTitleRange { index, count } => {
write!(f, "E{}: {}/{}", self.code(), index, count)
}
Error::KeydbConnect { host } => write!(f, "E{}: {}", self.code(), host),
Error::KeydbHttp { status } => write!(f, "E{}: {}", self.code(), status),
Error::KeydbWrite { path } => write!(f, "E{}: {}", self.code(), path),
Error::KeydbLoad { path } => write!(f, "E{}: {}", self.code(), path),
Error::AacsNoHostCert { path } => write!(f, "E{}: {}", self.code(), path),
Error::KeydbUnsupportedScheme { scheme } => {
write!(f, "E{}: {}", self.code(), scheme)
}
Error::StreamUrlInvalid { url } => write!(f, "E{}: {}", self.code(), url),
Error::StreamUrlMissingPath { scheme } => write!(f, "E{}: {}", self.code(), scheme),
Error::StreamUrlMissingPort { addr } => write!(f, "E{}: {}", self.code(), addr),
Error::NetworkAddrBlocked { addr } => write!(f, "E{}: {}", self.code(), addr),
Error::PesFrameTooLarge { size } => write!(f, "E{}: {}", self.code(), size),
Error::PesTrackTooLarge { track } => write!(f, "E{}: {}", self.code(), track),
Error::IsoTooLarge { path } => write!(f, "E{}: {}", self.code(), path),
Error::NoDiscKey { disc_hash } => {
if disc_hash.is_empty() {
write!(f, "E{}", self.code())
} else {
write!(f, "E{}: {}", self.code(), disc_hash)
}
}
Error::MuxTrackRange { track, tracks } => {
write!(f, "E{}: {}/{}", self.code(), track, tracks)
}
Error::InvalidCdbLength { len, max } => {
write!(f, "E{}: {}/{}", self.code(), len, max)
}
_ => write!(f, "E{}", self.code()),
}
}
}
impl std::error::Error for Error {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
Error::IoError { source } => Some(source),
_ => None,
}
}
}
impl From<std::io::Error> for Error {
fn from(e: std::io::Error) -> Self {
Error::IoError { source: e }
}
}
impl From<Error> for std::io::Error {
fn from(e: Error) -> Self {
// An `Error::IoError` is just a wrapper around an underlying
// `io::Error` that entered via `From<io::Error> for Error`.
// Round-trip it back unchanged so the original `ErrorKind` and
// raw OS error code survive instead of being flattened to
// `Other` with a stringified message.
if let Error::IoError { source } = e {
return source;
}
let code = e.code();
let msg = e.to_string();
// Map our error categories to io::ErrorKind
let kind = match code {
// Device access-denied semantics map to PermissionDenied;
// the rest of the 1xxx block is "device absent" -> NotFound.
E_DEVICE_PERMISSION | E_DEVICE_LOCKED => std::io::ErrorKind::PermissionDenied,
1000..=1999 => std::io::ErrorKind::NotFound,
2000..=2999 => std::io::ErrorKind::Unsupported,
3000..=3999 => std::io::ErrorKind::PermissionDenied,
4000..=4999 => std::io::ErrorKind::Other,
5000..=5999 => std::io::ErrorKind::Other,
6000..=6999 => std::io::ErrorKind::InvalidData,
7000..=7999 => std::io::ErrorKind::PermissionDenied,
8000..=8999 => std::io::ErrorKind::Other,
9000..=9001 => std::io::ErrorKind::Unsupported,
9002..=9008 => std::io::ErrorKind::InvalidInput,
// 9009 DiscUrlNotDirect: structurally unsupported entry point,
// not a parse failure — caller used the wrong API.
9009 => std::io::ErrorKind::Unsupported,
// 9010 HevcParamParse: malformed hvcC payload.
9010 => std::io::ErrorKind::InvalidData,
// 9011 MuxTrackRange: caller passed a bad track index.
9011 => std::io::ErrorKind::InvalidInput,
// 9012 Fmp4Unimplemented: sink can't emit media yet.
9012 => std::io::ErrorKind::Unsupported,
// 9014 PipelineJoinTimeout: consumer drain exceeded deadline.
E_PIPELINE_JOIN_TIMEOUT => std::io::ErrorKind::TimedOut,
// 9017 PesTrackTooLarge: out-of-range track index on serialize.
9017 => std::io::ErrorKind::InvalidInput,
// 9020 DiscCapacityOverflow: disc reported a capacity sentinel
// we can't represent — treat as bad/invalid device data.
9020 => std::io::ErrorKind::InvalidData,
// 9021 M2tsPacketMalformed: a muxer invariant break produced
// a non-188-byte packet — treat as invalid data.
9021 => std::io::ErrorKind::InvalidData,
// 9022 NetworkAddrBlocked: the output host resolved only to
// blocked (loopback/private/link-local) addresses — refuse.
E_NETWORK_ADDR_BLOCKED => std::io::ErrorKind::PermissionDenied,
// 9023 MuxEmpty: finish() reached with zero frames — the output
// would be a header-only container. Treat as invalid output.
E_MUX_EMPTY => std::io::ErrorKind::InvalidData,
// mp4:// demux errors: a malformed/truncated source file
// (E_MP4_INVALID), or a source whose tracks the mux can't use — no
// video track / missing codec-private config. All are invalid data.
E_MP4_NO_VIDEO_TRACK | E_MP4_INVALID | E_MP4_MISSING_CODEC_PRIVATE => {
std::io::ErrorKind::InvalidData
}
// 9030 ExtentNotUnitAligned: a malformed/non-AACS-aligned
// extent was handed to the prefetch producer.
9030 => std::io::ErrorKind::InvalidInput,
// 9047 DiscCapacityMalformed: the drive returned an unusable
// READ CAPACITY response (short transfer / overflow).
9047 => std::io::ErrorKind::InvalidData,
// dir:// usage / footgun gates (9019, 90249026, 9028): the caller
// gave an invalid flag/source/name combination — InvalidInput.
E_DIR_RAW_REJECTED
| E_DIR_MULTIPASS_REJECTED
| E_DIR_SOURCE_UNSUPPORTED
| E_DIR_NOT_EMPTY
| E_DIR_NAME_COLLISION => std::io::ErrorKind::InvalidInput,
// 9027 insufficient space / 9029 write failed: a filesystem-level
// failure, not bad input.
E_DIR_INSUFFICIENT_SPACE | E_DIR_WRITE_FAILED => std::io::ErrorKind::Other,
_ => std::io::ErrorKind::Other,
};
std::io::Error::new(kind, msg)
}
}
/// Convenience alias for `Result<T, Error>`.
pub type Result<T> = std::result::Result<T, Error>;
/// The numeric error code carried by an [`io::Error`](std::io::Error) that was
/// produced from an [`Error`], or `None` if it carries none.
///
/// [`From<Error> for io::Error`] is the ONLY path from a typed [`Error`] to an
/// `io::Error` in this crate, and it stringifies (`io::Error::new(kind, msg)`
/// where `msg` is the `Error`'s `E<code>[: …]` [`Display`](std::fmt::Display)
/// string) rather than boxing the typed value — no code path constructs an
/// `io::Error` that still holds a `crate::error::Error` via `get_ref`. So the
/// only recognised shape is the round-tripped `E<code>` message prefix.
fn io_error_code(e: &std::io::Error) -> Option<u16> {
// Round-tripped: `From<Error> for io::Error` stringifies as "E<code>[: …]".
let s = e.to_string();
let digits = s.strip_prefix('E')?;
let end = digits
.find(|c: char| !c.is_ascii_digit())
.unwrap_or(digits.len());
digits.get(..end)?.parse::<u16>().ok()
}
/// Whether a per-title mux failure is a *skippable title stub* — a
/// copy-protected-but-uncrackable title ([`Error::CssKeyMissing`]) or a title
/// that produced no muxable frames ([`Error::MkvInvalid`], an empty nav/menu
/// PGC stub). An all-titles rip skips such a title and finishes the rest;
/// every other error stays fatal.
///
/// This replaces the CLI's `E7023`/`E6008` string-match with a typed check on
/// the [`io::Error`](std::io::Error) `mux_stream` returns.
pub fn is_skippable_title_stub(e: &std::io::Error) -> bool {
matches!(io_error_code(e), Some(E_MKV_INVALID | E_CSS_KEY_MISSING))
}
/// Whether an [`io::Error`](std::io::Error) is a cooperative user stop
/// ([`Error::Halted`], code [`E_HALTED`]) — vs a structural failure. A stop is
/// resumable, not a rip failure: `mux_stream` maps a mid-run halt to
/// `completed = false`, and consumers preserve staging rather than quarantining.
/// Typed replacement for the consumers' `E<code>`-leading-token string match.
pub fn is_halt(e: &std::io::Error) -> bool {
io_error_code(e) == Some(E_HALTED)
}
impl Error {
/// Borrow the drive-returned SPC-4 sense triple if this error is a
/// [`Error::ScsiError`] carrying sense data. `None` for any other
/// variant **and** for `ScsiError`s that represent a transport-layer
/// failure (where the device never delivered a SCSI status reply, so
/// no sense data exists).
pub fn scsi_sense(&self) -> Option<&crate::scsi::ScsiSense> {
match self {
Error::ScsiError { sense: Some(s), .. } => Some(s),
Error::DiscRead { sense: Some(s), .. } => Some(s),
_ => None,
}
}
/// True if this is a [`Error::ScsiError`] representing a transport-layer
/// failure — kernel timeout, USB bridge wedge, IOKit service error.
/// The device never delivered a SCSI status reply, so there is no
/// sense data to inspect; retrying typically requires physical
/// intervention (replug).
pub fn is_scsi_transport_failure(&self) -> bool {
matches!(
self,
Error::ScsiError {
status: crate::scsi::SCSI_STATUS_TRANSPORT_FAILURE,
..
}
) || matches!(
self,
Error::DiscRead {
status: Some(crate::scsi::SCSI_STATUS_TRANSPORT_FAILURE),
..
}
) || matches!(
// A failed `ioctl(SG_IO)` (Error::IoError, e.g. ENODEV/EIO on an
// unplugged USB bridge) and a vanished device (Error::DeviceNotFound,
// fd gone) are dead-bus / transport-layer faults too — NOT recoverable
// bad sectors. Treat them as transport failures so sweep / patch /
// fill_extents abort the pass and re-enumerate the bridge instead of
// zero-filling every read against a wedged device.
self,
Error::IoError { .. } | Error::DeviceNotFound { .. }
)
}
/// True if this error indicates bridge degradation — the SCSI status
/// is neither GOOD (0x00), CHECK CONDITION (0x02), nor transport failure
/// (0xFF). Observed on the Initio INIC-1618L USB bridge preceding a full
/// crash: the bridge firmware returns non-standard status bytes (e.g.
/// 0x04, 0x05) with empty sense data. The caller should cool down
/// (10 s pause) and retry rather than hammering the bridge.
pub fn is_bridge_degradation(&self) -> bool {
let status = match self {
Error::ScsiError { status, .. } => *status,
Error::DiscRead { status, .. } => status.unwrap_or(0),
_ => return false,
};
status != crate::scsi::SCSI_STATUS_GOOD
&& status != crate::scsi::SCSI_STATUS_CHECK_CONDITION
&& status != crate::scsi::SCSI_STATUS_TRANSPORT_FAILURE
}
/// True if the underlying SCSI failure is a *marginal read* — the
/// drive returned an error category in which smaller-granularity
/// retries can sometimes recover the data:
///
/// - MEDIUM ERROR (sense key 3) — canonical bad-sector signal
/// - ABORTED COMMAND (sense key B) — transient; retry usually works
/// - NOT READY (sense key 2) — the dominant bad-sector response on
/// the BU40N (ASC 0x04/ASCQ 0x3E); a pause + retry often recovers
/// - RECOVERED ERROR (sense key 1) / NO SENSE (sense key 0) — not
/// classified as fatal; treat as recoverable
///
/// Returns `false` for transport failures (no sense data delivered),
/// HARDWARE ERROR, DATA PROTECT, UNIT ATTENTION, ILLEGAL
/// REQUEST, BLANK CHECK, kernel `IoError`, and any non-SCSI variant.
/// Caller-agnostic predicate — describes a property of the *error*,
/// not what one specific call site should do with it. Used by
/// `Disc::copy`'s hysteresis dispatch.
pub fn is_marginal_read(&self) -> bool {
self.scsi_sense()
.map(crate::scsi::ScsiSense::is_marginal)
.unwrap_or(false)
}
}
#[cfg(test)]
mod tests {
//! Smoke tests for the error code → variant mapping. Each new variant
//! added in 0.13.0 (English-elimination work) gets a code() check + a
//! Display sanity-check (no English words) + an io::ErrorKind mapping
//! check. Without these, future drift between the const codes and the
//! match arms in `code()` / the From impl could silently miscategorize.
use super::*;
#[test]
fn is_skippable_title_stub_matches_only_the_two_stub_codes() {
// The two skippable per-title stub codes, round-tripped through io::Error
// exactly as `mux_stream` returns them.
let mkv: std::io::Error = Error::MkvInvalid.into();
let css: std::io::Error = Error::CssKeyMissing.into();
assert!(is_skippable_title_stub(&mkv));
assert!(is_skippable_title_stub(&css));
// A different coded error is NOT skippable (kills a "match anything with
// an E-code" mutant).
let nostreams: std::io::Error = Error::NoStreams.into();
assert!(!is_skippable_title_stub(&nostreams));
// A plain io::Error with no E-code prefix is not skippable.
let plain = std::io::Error::from(std::io::ErrorKind::BrokenPipe);
assert!(!is_skippable_title_stub(&plain));
}
#[test]
fn new_variants_have_distinct_codes() {
let codes = [
Error::ScsiInterfaceUnavailable { path: "p".into() }.code(),
Error::DeviceLocked {
path: "p".into(),
kr: 0,
}
.code(),
Error::IoKitPluginFailed {
path: "p".into(),
kr: 0,
}
.code(),
Error::UnsupportedPlatform { target: "x".into() }.code(),
Error::PlatformNotImplemented {
platform: "renesas".into(),
}
.code(),
Error::MapfileInvalid { kind: "hex" }.code(),
Error::DiscUrlNotDirect.code(),
Error::ExtentNotUnitAligned.code(),
Error::M2tsPacketMalformed.code(),
Error::DiscCapacityMalformed.code(),
Error::DirRawRejected.code(),
Error::DirMultipassRejected.code(),
Error::DirSourceUnsupported.code(),
Error::DirNotEmpty.code(),
Error::DirInsufficientSpace {
required: 1,
available: 0,
}
.code(),
Error::DirNameCollision { host: "x".into() }.code(),
Error::DirWriteFailed { errno: Some(28) }.code(),
];
let mut sorted = codes.to_vec();
sorted.sort();
sorted.dedup();
assert_eq!(
sorted.len(),
codes.len(),
"two new variants share a code — check error.rs constants"
);
}
#[test]
fn display_emits_no_english_words() {
// Every variant's Display must be `E{code}: {data}` — no English.
// Sample a few of the new variants and a few existing ones to
// catch accidental string-stuffing in future edits.
let cases: &[(Error, u16)] = &[
(
Error::ScsiInterfaceUnavailable {
path: "/dev/sg4".into(),
},
E_SCSI_INTERFACE_UNAVAILABLE,
),
(
Error::DeviceLocked {
path: "/dev/sg4".into(),
kr: 0xE00002C5,
},
E_DEVICE_LOCKED,
),
(
Error::UnsupportedPlatform {
target: "freebsd".into(),
},
E_UNSUPPORTED_PLATFORM,
),
(
Error::PlatformNotImplemented {
platform: "renesas".into(),
},
E_PLATFORM_NOT_IMPLEMENTED,
),
(Error::MapfileInvalid { kind: "hex" }, E_MAPFILE_INVALID),
(Error::DiscUrlNotDirect, E_DISC_URL_NOT_DIRECT),
(Error::ExtentNotUnitAligned, E_EXTENT_NOT_UNIT_ALIGNED),
];
for (e, want_code) in cases {
let s = e.to_string();
assert!(
s.starts_with(&format!("E{}", want_code)),
"{:?} display does not lead with code: {}",
e,
s
);
// Crude English filter — `Display` should never emit ASCII words
// longer than 4 chars (codes/paths/identifiers like `/dev/sg4`,
// `renesas`, `freebsd` all pass; "exclusive access denied" would
// not).
for word in s.split(|c: char| !c.is_ascii_alphabetic()) {
assert!(
word.len() <= 8,
"Display contains suspicious English-looking word `{word}` in `{s}`"
);
}
}
}
#[test]
fn iokind_mapping_for_new_variants() {
use std::io::ErrorKind;
let mapped = |e: Error| -> ErrorKind {
let io: std::io::Error = e.into();
io.kind()
};
// 1xxx "device absent" → NotFound
assert_eq!(
mapped(Error::ScsiInterfaceUnavailable { path: "p".into() }),
ErrorKind::NotFound
);
assert_eq!(
mapped(Error::DeviceNotFound { path: "p".into() }),
ErrorKind::NotFound
);
// 1xxx access-denied semantics → PermissionDenied (not NotFound)
assert_eq!(
mapped(Error::DevicePermission { path: "p".into() }),
ErrorKind::PermissionDenied
);
assert_eq!(
mapped(Error::DeviceLocked {
path: "p".into(),
kr: 0
}),
ErrorKind::PermissionDenied
);
// 2xxx range → Unsupported
assert_eq!(
mapped(Error::UnsupportedPlatform { target: "x".into() }),
ErrorKind::Unsupported
);
assert_eq!(
mapped(Error::PlatformNotImplemented {
platform: "x".into()
}),
ErrorKind::Unsupported
);
// 6xxx range → InvalidData
assert_eq!(
mapped(Error::MapfileInvalid { kind: "hex" }),
ErrorKind::InvalidData
);
// 9009 special-cased to Unsupported
assert_eq!(mapped(Error::DiscUrlNotDirect), ErrorKind::Unsupported);
// 9021 special-cased to InvalidData
assert_eq!(mapped(Error::M2tsPacketMalformed), ErrorKind::InvalidData);
// 9047 DiscCapacityMalformed → InvalidData
assert_eq!(mapped(Error::DiscCapacityMalformed), ErrorKind::InvalidData);
}
/// `Error::IoError` must round-trip back to the *original*
/// `io::Error` — preserving its `ErrorKind` and raw OS error —
/// rather than being flattened to `Other` with a stringified
/// message.
#[test]
fn ioerror_roundtrips_preserving_kind_and_oscode() {
use std::io::ErrorKind;
let original = std::io::Error::from_raw_os_error(13); // EACCES
let original_kind = original.kind();
let wrapped: Error = original.into(); // From<io::Error> for Error
let back: std::io::Error = wrapped.into(); // From<Error> for io::Error
assert_eq!(back.kind(), original_kind);
assert_eq!(back.raw_os_error(), Some(13));
// A synthesized kind (no OS code) must also survive.
let timeout: Error = std::io::Error::from(ErrorKind::TimedOut).into();
let back2: std::io::Error = timeout.into();
assert_eq!(back2.kind(), ErrorKind::TimedOut);
}
/// `DiscRead` Display must include the ASCQ byte (the 5th field) so
/// NOT_READY substates (0x04/0x3E vs 0x04/0x01) are distinguishable
/// in logs and bug reports.
#[test]
fn discread_display_includes_ascq() {
let e = Error::DiscRead {
sector: 42,
status: Some(0x02),
sense: Some(crate::scsi::ScsiSense {
sense_key: 0x02,
asc: 0x04,
ascq: 0x3e,
}),
};
let s = e.to_string();
// sense_key/asc/ascq triple all present.
assert!(s.contains("0x02/0x04/0x3e"), "ascq missing from `{s}`");
}
/// `NoDiscKey` with an empty hash must not emit a dangling
/// "colon space" suffix.
#[test]
fn nodisckey_empty_hash_has_no_trailing_colon() {
let e = Error::NoDiscKey {
disc_hash: String::new(),
};
assert_eq!(e.to_string(), format!("E{}", E_NO_DISC_KEY));
let e2 = Error::NoDiscKey {
disc_hash: "abc".into(),
};
assert_eq!(e2.to_string(), format!("E{}: abc", E_NO_DISC_KEY));
}
// ── New comprehensive tests ────────────────────────────────────────────────
/// Every published error code constant must be unique.
/// This pins all code assignments: a new variant that accidentally reuses
/// an existing code will make this test fail.
/// Mutation: changing E_KEYDB_PARSE from 8004 to 8000 (duplicating E_KEYDB_CONNECT) fails here.
#[test]
fn all_error_code_constants_are_unique() {
let mut codes = vec![
E_DEVICE_NOT_FOUND,
E_DEVICE_PERMISSION,
E_DEVICE_NOT_READY,
E_DEVICE_RESET_FAILED,
E_SCSI_INTERFACE_UNAVAILABLE,
E_DEVICE_LOCKED,
E_IOKIT_PLUGIN_FAILED,
E_UNSUPPORTED_DRIVE,
E_PROFILE_PARSE,
E_UNSUPPORTED_PLATFORM,
E_PLATFORM_NOT_IMPLEMENTED,
E_UNLOCK_FAILED,
E_SIGNATURE_MISMATCH,
E_SCSI_ERROR,
E_INVALID_CDB_LENGTH,
E_IO_ERROR,
E_DISC_READ,
E_MPLS_PARSE,
E_CLPI_PARSE,
E_UDF_NOT_FOUND,
E_DISC_TITLE_RANGE,
E_IFO_PARSE,
E_MKV_INVALID,
E_NO_STREAMS,
E_HALTED,
E_MAPFILE_INVALID,
E_UDF_BUFFER_TOO_SMALL,
E_AACS_NO_KEYS,
E_AACS_CERT_SHORT,
E_AACS_AGID_ALLOC,
E_AACS_CERT_REJECTED,
E_AACS_CERT_READ,
E_AACS_CERT_VERIFY,
E_AACS_KEY_READ,
E_AACS_KEY_REJECTED,
E_AACS_KEY_VERIFY,
E_AACS_VID_READ,
E_AACS_VID_MAC,
E_AACS_DATA_KEY,
E_DECRYPT_FAILED,
E_CSS_AUTH_FAILED,
E_AACS_HOST_CERT_REJECTED,
E_AACS_RAW_READ_UNSUPPORTED,
E_AACS_VID_UNAVAILABLE,
E_AACS_MK_UNAVAILABLE,
E_AACS_VUK_NOT_IN_KEYDB,
E_DRIVE_PROFILE_MISSING,
E_VID_CDB_UNAVAILABLE,
E_NO_DISC_KEY,
E_CSS_KEY_MISSING,
E_AACS_NO_HOST_CERT,
E_AACS_BUS_KEY_UNAVAILABLE,
E_FMTS_KEY_MISSING,
E_KEYDB_CONNECT,
E_KEYDB_HTTP,
E_KEYDB_INVALID,
E_KEYDB_WRITE,
E_KEYDB_PARSE,
E_KEYDB_LOAD,
E_KEYDB_UNSUPPORTED_SCHEME,
E_KEYDB_TOO_MANY_REDIRECTS,
E_STREAM_READ_ONLY,
E_STREAM_WRITE_ONLY,
E_STREAM_URL_INVALID,
E_STREAM_URL_MISSING_PATH,
E_STREAM_URL_MISSING_PORT,
E_NETWORK_ADDR_BLOCKED,
E_MUX_EMPTY,
E_MP4_NO_VIDEO_TRACK,
E_MP4_INVALID,
E_MP4_MISSING_CODEC_PRIVATE,
E_PES_FRAME_TOO_LARGE,
E_PES_INVALID_MAGIC,
E_PES_TRACK_TOO_LARGE,
E_ISO_TOO_LARGE,
E_NO_METADATA,
E_DISC_URL_NOT_DIRECT,
E_HEVC_PARAM_PARSE,
E_MUX_TRACK_RANGE,
E_FMP4_UNIMPLEMENTED,
E_DEMUX_THREAD_PANICKED,
E_PIPELINE_JOIN_TIMEOUT,
E_PIPELINE_CONSUMER_PANICKED,
E_SWEEP_CONSUMER_GONE,
E_PIPELINE_CONSUMER_GONE,
E_DISC_CAPACITY_OVERFLOW,
E_M2TS_PACKET_MALFORMED,
E_EXTENT_NOT_UNIT_ALIGNED,
E_DISC_CAPACITY_MALFORMED,
];
let original_len = codes.len();
codes.sort();
codes.dedup();
assert_eq!(
codes.len(),
original_len,
"duplicate error code constants detected — check error.rs"
);
}
/// Error code ranges match their documented category buckets.
/// E.g. all device codes are 10001999, all AACS codes are 70007999.
/// Mutation: accidentally shifting a constant out of its range (e.g. E_DEVICE_NOT_FOUND = 2000)
/// breaks CLI range-based dispatch and logging.
#[test]
fn error_code_range_buckets_are_correct() {
// Device (1xxx)
assert!((1000..2000).contains(&E_DEVICE_NOT_FOUND));
assert!((1000..2000).contains(&E_DEVICE_PERMISSION));
assert!((1000..2000).contains(&E_SCSI_INTERFACE_UNAVAILABLE));
// Profile (2xxx)
assert!((2000..3000).contains(&E_UNSUPPORTED_DRIVE));
assert!((2000..3000).contains(&E_PROFILE_PARSE));
// Unlock (3xxx)
assert!((3000..4000).contains(&E_UNLOCK_FAILED));
assert!((3000..4000).contains(&E_SIGNATURE_MISMATCH));
// SCSI (4xxx)
assert!((4000..5000).contains(&E_SCSI_ERROR));
// I/O (5xxx)
assert!((5000..6000).contains(&E_IO_ERROR));
// Disc format (6xxx)
assert!((6000..7000).contains(&E_DISC_READ));
assert!((6000..7000).contains(&E_HALTED));
assert!((6000..7000).contains(&E_MAPFILE_INVALID));
// AACS (7xxx)
assert!((7000..8000).contains(&E_AACS_NO_KEYS));
assert!((7000..8000).contains(&E_NO_DISC_KEY));
// Keydb (8xxx)
assert!((8000..9000).contains(&E_KEYDB_CONNECT));
assert!((8000..9000).contains(&E_KEYDB_TOO_MANY_REDIRECTS));
// Stream/mux (9xxx)
assert!((9000..10000).contains(&E_STREAM_READ_ONLY));
assert!((9000..10000).contains(&E_DISC_CAPACITY_MALFORMED));
}
/// Error.code() matches its associated constant for every new 9xxx variant.
/// Mutation: swapping two adjacent code() arms (e.g. SweepConsumerGone ↔
/// PipelineConsumerGone) makes the wrong code appear in logs.
#[test]
fn error_code_matches_constant_for_stream_variants() {
use std::io::ErrorKind;
let cases: &[(Error, u16)] = &[
(Error::StreamReadOnly, E_STREAM_READ_ONLY),
(Error::StreamWriteOnly, E_STREAM_WRITE_ONLY),
(Error::PesInvalidMagic, E_PES_INVALID_MAGIC),
(Error::NoMetadata, E_NO_METADATA),
(Error::DiscUrlNotDirect, E_DISC_URL_NOT_DIRECT),
(Error::HevcParamParse, E_HEVC_PARAM_PARSE),
(Error::Fmp4Unimplemented, E_FMP4_UNIMPLEMENTED),
(Error::DemuxThreadPanicked, E_DEMUX_THREAD_PANICKED),
(
Error::PipelineConsumerPanicked,
E_PIPELINE_CONSUMER_PANICKED,
),
(Error::SweepConsumerGone, E_SWEEP_CONSUMER_GONE),
(Error::PipelineConsumerGone, E_PIPELINE_CONSUMER_GONE),
(Error::DiscCapacityOverflow, E_DISC_CAPACITY_OVERFLOW),
(Error::MuxEmpty, E_MUX_EMPTY),
(Error::Mp4NoVideoTrack, E_MP4_NO_VIDEO_TRACK),
(Error::Mp4Invalid, E_MP4_INVALID),
(Error::Mp4MissingCodecPrivate, E_MP4_MISSING_CODEC_PRIVATE),
(Error::M2tsPacketMalformed, E_M2TS_PACKET_MALFORMED),
(Error::ExtentNotUnitAligned, E_EXTENT_NOT_UNIT_ALIGNED),
(Error::DiscCapacityMalformed, E_DISC_CAPACITY_MALFORMED),
(
Error::NetworkAddrBlocked {
addr: String::new(),
},
E_NETWORK_ADDR_BLOCKED,
),
];
for (e, expected_code) in cases {
assert_eq!(
e.code(),
*expected_code,
"{:?}.code() must equal {} (const)",
e,
expected_code
);
}
// io::ErrorKind mapping spot-check for 9xxx variants.
let to_kind = |e: Error| -> ErrorKind {
let io: std::io::Error = e.into();
io.kind()
};
assert_eq!(to_kind(Error::StreamReadOnly), ErrorKind::Unsupported);
assert_eq!(to_kind(Error::HevcParamParse), ErrorKind::InvalidData);
assert_eq!(to_kind(Error::Fmp4Unimplemented), ErrorKind::Unsupported);
assert_eq!(to_kind(Error::PipelineJoinTimeout), ErrorKind::TimedOut);
assert_eq!(
to_kind(Error::ExtentNotUnitAligned),
ErrorKind::InvalidInput
);
}
/// Error.code() for AACS variants matches their constants.
/// Mutation: swapping E_AACS_CERT_READ and E_AACS_CERT_VERIFY codes
/// makes the wrong diagnostic appear in the UI.
#[test]
fn error_code_matches_constant_for_aacs_variants() {
let aacs_cases: &[(Error, u16)] = &[
(Error::AacsNoKeys, E_AACS_NO_KEYS),
(Error::AacsCertShort, E_AACS_CERT_SHORT),
(Error::AacsAgidAlloc, E_AACS_AGID_ALLOC),
(Error::AacsCertRejected, E_AACS_CERT_REJECTED),
(Error::AacsCertRead, E_AACS_CERT_READ),
(Error::AacsCertVerify, E_AACS_CERT_VERIFY),
(Error::AacsKeyRead, E_AACS_KEY_READ),
(Error::AacsKeyRejected, E_AACS_KEY_REJECTED),
(Error::AacsKeyVerify, E_AACS_KEY_VERIFY),
(Error::AacsVidRead, E_AACS_VID_READ),
(Error::AacsVidMac, E_AACS_VID_MAC),
(Error::AacsDataKey, E_AACS_DATA_KEY),
(Error::DecryptFailed, E_DECRYPT_FAILED),
(Error::CssAuthFailed, E_CSS_AUTH_FAILED),
(Error::AacsHostCertRejected, E_AACS_HOST_CERT_REJECTED),
(Error::AacsRawReadUnsupported, E_AACS_RAW_READ_UNSUPPORTED),
(Error::AacsVidUnavailable, E_AACS_VID_UNAVAILABLE),
(Error::AacsMkUnavailable, E_AACS_MK_UNAVAILABLE),
(Error::AacsVukNotInKeydb, E_AACS_VUK_NOT_IN_KEYDB),
(Error::DriveProfileMissing, E_DRIVE_PROFILE_MISSING),
(Error::VidCdbUnavailable, E_VID_CDB_UNAVAILABLE),
];
for (e, expected_code) in aacs_cases {
assert_eq!(
e.code(),
*expected_code,
"{:?}.code() must be {}",
e,
expected_code
);
}
}
/// is_scsi_transport_failure is true for the 0xFF SCSI sentinel AND for the
/// non-SCSI dead-bus faults (Error::IoError from a failed ioctl(SG_IO),
/// Error::DeviceNotFound from a vanished fd) — but NEVER for a real SCSI
/// reply (CHECK CONDITION) or unrelated errors.
/// Mutation: testing against 0x02 (CHECK CONDITION) would wrongly mark CHECK
/// CONDITION replies as transport failures; dropping the IoError/
/// DeviceNotFound arm would let a dead bus zero-fill the disc.
#[test]
fn is_scsi_transport_failure_only_for_0xff() {
use crate::scsi::SCSI_STATUS_TRANSPORT_FAILURE;
// True: transport failure sentinel.
let tf = Error::ScsiError {
opcode: 0x28,
status: SCSI_STATUS_TRANSPORT_FAILURE,
sense: None,
};
assert!(tf.is_scsi_transport_failure());
// False: CHECK CONDITION is a real SCSI reply, not a transport failure.
let cc = Error::ScsiError {
opcode: 0x28,
status: crate::scsi::SCSI_STATUS_CHECK_CONDITION,
sense: Some(crate::scsi::ScsiSense {
sense_key: 0x03,
asc: 0x11,
ascq: 0x00,
}),
};
assert!(!cc.is_scsi_transport_failure());
// True: non-SCSI dead-bus faults — a failed ioctl(SG_IO) and a vanished
// device are transport-layer failures, not recoverable bad sectors.
assert!(
Error::IoError {
source: std::io::Error::from(std::io::ErrorKind::NotConnected)
}
.is_scsi_transport_failure()
);
assert!(
Error::DeviceNotFound {
path: "/dev/sg9".into()
}
.is_scsi_transport_failure()
);
// False for unrelated errors.
assert!(!Error::Halted.is_scsi_transport_failure());
}
/// is_marginal_read returns true for MEDIUM ERROR (3), NOT READY (2),
/// ABORTED COMMAND (B), RECOVERED ERROR (1), NO SENSE (0).
/// Spec: comment on is_marginal_read lists these five sense keys.
/// Mutation: removing NOT_READY from the marginal set means BU40N "bad sector"
/// responses are treated as fatal instead of retriable.
#[test]
fn is_marginal_read_sense_key_coverage() {
use crate::scsi::ScsiSense;
let marginal_keys = [
0x00, // NO SENSE
0x01, // RECOVERED ERROR
0x02, // NOT READY — dominant BU40N bad-sector sense key
0x03, // MEDIUM ERROR — canonical bad sector
0x0B, // ABORTED COMMAND
];
for sk in marginal_keys {
let e = Error::ScsiError {
opcode: 0x28,
status: crate::scsi::SCSI_STATUS_CHECK_CONDITION,
sense: Some(ScsiSense {
sense_key: sk,
asc: 0x11,
ascq: 0x00,
}),
};
assert!(
e.is_marginal_read(),
"sense_key=0x{:02x} must be marginal",
sk
);
}
// Non-marginal keys: HARDWARE ERROR (4), ILLEGAL REQUEST (5),
// UNIT ATTENTION (6), DATA PROTECT (7), BLANK CHECK (8).
let non_marginal_keys = [0x04, 0x05, 0x06, 0x07, 0x08];
for sk in non_marginal_keys {
let e = Error::ScsiError {
opcode: 0x28,
status: crate::scsi::SCSI_STATUS_CHECK_CONDITION,
sense: Some(ScsiSense {
sense_key: sk,
asc: 0x00,
ascq: 0x00,
}),
};
assert!(
!e.is_marginal_read(),
"sense_key=0x{:02x} must NOT be marginal",
sk
);
}
}
/// is_bridge_degradation returns true for a status byte that is not GOOD,
/// CHECK CONDITION, or TRANSPORT_FAILURE.
/// Spec: comment says "bridge firmware returns non-standard status bytes
/// (e.g. 0x04, 0x05) with empty sense data."
/// Mutation: checking only for 0x04 misses 0x05 and other degradation bytes.
#[test]
fn is_bridge_degradation_detects_non_standard_status() {
use crate::scsi::{
SCSI_STATUS_CHECK_CONDITION, SCSI_STATUS_GOOD, SCSI_STATUS_TRANSPORT_FAILURE,
};
// 0x04 and 0x05 are non-standard bridge degradation codes.
for bad_status in [0x04u8, 0x05, 0x08, 0x10] {
let e = Error::ScsiError {
opcode: 0x28,
status: bad_status,
sense: None,
};
assert!(
e.is_bridge_degradation(),
"status=0x{:02x} must be bridge degradation",
bad_status
);
}
// Standard codes must NOT be classified as bridge degradation.
assert!(
!Error::ScsiError {
opcode: 0x28,
status: SCSI_STATUS_GOOD,
sense: None
}
.is_bridge_degradation()
);
assert!(
!Error::ScsiError {
opcode: 0x28,
status: SCSI_STATUS_CHECK_CONDITION,
sense: None
}
.is_bridge_degradation()
);
assert!(
!Error::ScsiError {
opcode: 0x28,
status: SCSI_STATUS_TRANSPORT_FAILURE,
sense: None
}
.is_bridge_degradation()
);
}
/// scsi_sense returns Some for ScsiError with sense and DiscRead with sense.
/// Mutation: only checking ScsiError misses DiscRead sense data.
#[test]
fn scsi_sense_from_disc_read() {
use crate::scsi::ScsiSense;
let sense = ScsiSense {
sense_key: 0x02,
asc: 0x04,
ascq: 0x3e,
};
let disc_read = Error::DiscRead {
sector: 12345,
status: Some(0x02),
sense: Some(sense),
};
let got = disc_read.scsi_sense().unwrap();
assert_eq!(got.sense_key, 0x02);
assert_eq!(got.asc, 0x04);
assert_eq!(got.ascq, 0x3e);
// Non-SCSI errors return None.
assert!(Error::Halted.scsi_sense().is_none());
assert!(Error::NoMetadata.scsi_sense().is_none());
}
/// Display for SignatureMismatch includes both expected and got bytes in hex.
/// Mutation: printing only `expected` without `got` makes the mismatch undiscoverable.
#[test]
fn signature_mismatch_display_includes_both_sides() {
let e = Error::SignatureMismatch {
expected: [0xAA, 0xBB, 0xCC, 0xDD],
got: [0x11, 0x22, 0x33, 0x44],
};
let s = e.to_string();
// Must include the E-code prefix.
assert!(
s.starts_with(&format!("E{}", E_SIGNATURE_MISMATCH)),
"must start with code: {s}"
);
// Must include the expected bytes.
assert!(s.contains("aabbccdd"), "must contain expected bytes: {s}");
// Must include the got bytes.
assert!(s.contains("11223344"), "must contain got bytes: {s}");
// Must use '!=' as the separator between expected and got.
assert!(s.contains("!="), "must use '!=' separator: {s}");
}
/// DiscTitleRange display format is "E6005: index/count".
/// Mutation: swapping index and count in the format string makes logs misleading.
#[test]
fn disc_title_range_display_is_index_slash_count() {
let e = Error::DiscTitleRange {
index: 3,
count: 10,
};
let expected = format!("E{}: 3/10", E_DISC_TITLE_RANGE);
assert_eq!(e.to_string(), expected);
}
/// Keydb error variants display correctly with their structured data.
/// Mutation: using a generic "E{code}" fallback drops the host/path data from logs.
#[test]
fn keydb_errors_include_structured_data_in_display() {
let e_connect = Error::KeydbConnect {
host: "mirror.example".into(),
};
assert!(
e_connect.to_string().contains("mirror.example"),
"KeydbConnect display must include host"
);
let e_http = Error::KeydbHttp { status: 403 };
assert!(
e_http.to_string().contains("403"),
"KeydbHttp display must include status code"
);
let e_write = Error::KeydbWrite {
path: "/root/.config/freemkv/keydb.cfg".into(),
};
assert!(
e_write.to_string().contains("/root"),
"KeydbWrite display must include path"
);
let e_load = Error::KeydbLoad {
path: "<no keydb in search paths>".into(),
};
assert!(
e_load.to_string().contains("<no keydb in search paths>"),
"KeydbLoad display must include the sentinel path"
);
let e_no_cert = Error::AacsNoHostCert {
path: "<no host cert>".into(),
};
assert!(
e_no_cert.to_string().contains("<no host cert>"),
"AacsNoHostCert display must include the sentinel path"
);
let e_scheme = Error::KeydbUnsupportedScheme {
scheme: "ftp".into(),
};
assert!(
e_scheme.to_string().contains("ftp"),
"KeydbUnsupportedScheme display must include scheme"
);
}
/// MuxTrackRange display format is "E9011: track/tracks".
/// Mutation: formatting as "track/count" or "tracks/track" is wrong.
#[test]
fn mux_track_range_display_is_track_slash_tracks() {
let e = Error::MuxTrackRange {
track: 5,
tracks: 3,
};
let expected = format!("E{}: 5/3", E_MUX_TRACK_RANGE);
assert_eq!(e.to_string(), expected);
}
}