38 lines
1.2 KiB
Rust
38 lines
1.2 KiB
Rust
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pub mod content_key;
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pub mod header;
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pub mod metadata;
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use cipher::block_padding::UnpadError;
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use thiserror::Error;
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use umc_utils::base64;
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#[derive(Error, Debug)]
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pub enum NetEaseCryptoError {
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#[error("Header need at least {0} more bytes")]
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HeaderTooSmall(usize),
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#[error("Not a NCM file")]
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NotNCMFile,
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#[error("Invalid NCM checksum. Expected {expected:08x}, actual: {expected:08x}")]
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ChecksumInvalid { expected: u32, actual: u32 },
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#[error("Unsupported cover image version: {0}")]
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UnsupportedCoverImageVersion(u8),
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#[error("Cover image: Frame size is less than image 1. frame_size:{frame_size}, image1_size:{image1_size}")]
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InvalidCoverImage2Size {
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frame_size: usize,
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image1_size: usize,
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},
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#[error("ContentKey: AES PKCS#7 Decode Error")]
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ContentKeyDecryptError(UnpadError),
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#[error("ContentKey: Invalid key prefix: {0}")]
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ContentKeyWrongPrefix(String),
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#[error("Metadata: Invalid prefix while decoding: {0}")]
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MetadataWrongPrefix(String),
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#[error("Metadata: AES PKCS#7 Decode Error")]
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MetadataDecryptError(UnpadError),
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#[error("Metadata: Decode metadata failed: {0}")]
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MetadataDecodeError(base64::DecodeError),
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}
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