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+ "num_cpus", + "once_cell", + "pin-project-lite", + "pin-utils", + "slab", + "wasm-bindgen-futures", +] + +[[package]] +name = "async-task" +version = "4.0.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e91831deabf0d6d7ec49552e489aed63b7456a7a3c46cff62adad428110b0af0" + +[[package]] +name = "atomic-waker" +version = "1.0.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "065374052e7df7ee4047b1160cca5e1467a12351a40b3da123c870ba0b8eda2a" + [[package]] name = "atomicwrites" version = "0.2.5" @@ -38,13 +174,14 @@ version = "0.1.0" dependencies = [ "anyhow", "atomicwrites", - "base64", + "base64 0.13.0", + "cacache", "cargo-husky", "fail", "femme", "fs2", "glob", - "hex", + "hex 0.4.2", "log", "nix 0.19.1", "pretty_assertions", @@ -56,7 +193,7 @@ dependencies = [ "serde", "serde_cbor", "serde_json", - "sha2", + "sha2 0.9.3", "tempfile", "thiserror", "two-rusty-forks", @@ -65,6 +202,15 @@ dependencies = [ "walkdir", ] 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"generic-array", + "generic-array 0.14.4", ] [[package]] @@ -226,6 +460,12 @@ version = "1.6.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457" +[[package]] +name = "event-listener" +version = "2.5.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f7531096570974c3a9dcf9e4b8e1cede1ec26cf5046219fb3b9d897503b9be59" + [[package]] name = "fail" version = "0.4.0" @@ -237,6 +477,21 @@ dependencies = [ "rand 0.7.3", ] +[[package]] +name = "fake-simd" +version = "0.1.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e88a8acf291dafb59c2d96e8f59828f3838bb1a70398823ade51a84de6a6deed" + +[[package]] +name = "fastrand" +version = "1.4.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "77b705829d1e87f762c2df6da140b26af5839e1033aa84aa5f56bb688e4e1bdb" +dependencies = [ + "instant", +] + [[package]] name = "femme" 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"futures-core", + "js-sys", + "wasm-bindgen", + "web-sys", +] + [[package]] name = "half" version = "1.7.1" @@ -334,12 +720,27 @@ dependencies = [ "libc", ] +[[package]] +name = "hex" +version = "0.3.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "805026a5d0141ffc30abb3be3173848ad46a1b1664fe632428479619a3644d77" + [[package]] name = "hex" version = "0.4.2" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "644f9158b2f133fd50f5fb3242878846d9eb792e445c893805ff0e3824006e35" +[[package]] +name = "instant" +version = "0.1.9" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "61124eeebbd69b8190558df225adf7e4caafce0d743919e5d6b19652314ec5ec" +dependencies = [ + "cfg-if 1.0.0", +] + [[package]] name = "itoa" version = "0.4.7" @@ -348,13 +749,22 @@ checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736" [[package]] name = "js-sys" -version = "0.3.47" +version = "0.3.49" source = 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dependencies = [ "output_vt100", ] +[[package]] +name = "proc-macro-hack" +version = "0.5.19" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5" + +[[package]] +name = "proc-macro-nested" +version = "0.1.7" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "bc881b2c22681370c6a780e47af9840ef841837bc98118431d4e1868bd0c1086" + [[package]] name = "proc-macro2" version = "1.0.24" @@ -792,17 +1273,92 @@ dependencies = [ "serde", ] +[[package]] +name = "sha-1" +version = "0.8.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f7d94d0bede923b3cea61f3f1ff57ff8cdfd77b400fb8f9998949e0cf04163df" +dependencies = [ + "block-buffer 0.7.3", + "digest 0.8.1", + "fake-simd", + "opaque-debug 0.2.3", +] + +[[package]] +name = "sha2" +version = "0.8.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = 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+dependencies = [ + "libc", +] + +[[package]] +name = "slab" +version = "0.4.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f173ac3d1a7e3b28003f40de0b5ce7fe2710f9b9dc3fc38664cebee46b3b6527" + +[[package]] +name = "socket2" +version = "0.4.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "9e3dfc207c526015c632472a77be09cf1b6e46866581aecae5cc38fb4235dea2" +dependencies = [ + "libc", + "winapi", +] + +[[package]] +name = "ssri" +version = "5.0.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e875e58f12c33f832d09cff94b079aee84a48d8188d7a7132b3434358afb70c9" +dependencies = [ + "base64 0.10.1", + "digest 0.8.1", + "hex 0.3.2", + "serde", + "serde_derive", + "sha-1", + "sha2 0.8.2", + "thiserror", ] [[package]] @@ -942,6 +1498,12 @@ dependencies = [ "libc", ] +[[package]] +name = "waker-fn" +version = "1.1.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "9d5b2c62b4012a3e1eca5a7e077d13b3bf498c4073e33ccd58626607748ceeca" + [[package]] name = "walkdir" version = "2.3.1" @@ -967,9 +1529,9 @@ checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6" [[package]] name = "wasm-bindgen" -version = "0.2.70" +version = "0.2.72" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "55c0f7123de74f0dab9b7d00fd614e7b19349cd1e2f5252bbe9b1754b59433be" +checksum = "8fe8f61dba8e5d645a4d8132dc7a0a66861ed5e1045d2c0ed940fab33bac0fbe" dependencies = [ "cfg-if 1.0.0", "serde", @@ -979,9 +1541,9 @@ dependencies = [ [[package]] name = "wasm-bindgen-backend" -version = "0.2.70" +version = "0.2.72" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "7bc45447f0d4573f3d65720f636bbcc3dd6ce920ed704670118650bcd47764c7" +checksum = "046ceba58ff062da072c7cb4ba5b22a37f00a302483f7e2a6cdc18fedbdc1fd3" dependencies = [ "bumpalo", "lazy_static", @@ -993,10 +1555,22 @@ dependencies = [ ] [[package]] -name = "wasm-bindgen-macro" -version = "0.2.70" +name = "wasm-bindgen-futures" +version = "0.4.22" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "3b8853882eef39593ad4174dd26fc9865a64e84026d223f63bb2c42affcbba2c" +checksum = "73157efb9af26fb564bb59a009afd1c7c334a44db171d280690d0c3faaec3468" +dependencies = [ + "cfg-if 1.0.0", + "js-sys", + "wasm-bindgen", + "web-sys", +] + +[[package]] +name = "wasm-bindgen-macro" +version = "0.2.72" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "0ef9aa01d36cda046f797c57959ff5f3c615c9cc63997a8d545831ec7976819b" dependencies = [ "quote", "wasm-bindgen-macro-support", @@ -1004,9 +1578,9 @@ dependencies = [ [[package]] name = "wasm-bindgen-macro-support" -version = "0.2.70" +version = "0.2.72" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "4133b5e7f2a531fa413b3a1695e925038a05a71cf67e87dafa295cb645a01385" +checksum = "96eb45c1b2ee33545a813a92dbb53856418bf7eb54ab34f7f7ff1448a5b3735d" dependencies = [ "proc-macro2", "quote", @@ -1017,9 +1591,9 @@ dependencies = [ [[package]] name = "wasm-bindgen-shared" -version = "0.2.70" +version = "0.2.72" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "dd4945e4943ae02d15c13962b38a5b1e81eadd4b71214eee75af64a4d6a4fd64" +checksum = "b7148f4696fb4960a346eaa60bbfb42a1ac4ebba21f750f75fc1375b098d5ffa" [[package]] name = "web-sys" @@ -1031,6 +1605,15 @@ dependencies = [ "wasm-bindgen", ] +[[package]] +name = "wepoll-sys" +version = "3.0.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "0fcb14dea929042224824779fbc82d9fab8d2e6d3cbc0ac404de8edf489e77ff" +dependencies = [ + "cc", +] + [[package]] name = "winapi" version = "0.3.9" diff --git a/Cargo.toml b/Cargo.toml index 6f30472..892174b 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -7,6 +7,7 @@ license = "AGPL-3.0" description = "modern and simple, yet efficient backup solution" [dependencies] +cacache = "8" anyhow = "1.0" atomicwrites = "0.2" base64 = "0.13" diff --git a/src/io/error_correcting_encoder.rs b/src/io/error_correcting_encoder.rs index 189f560..33cda87 100644 --- a/src/io/error_correcting_encoder.rs +++ b/src/io/error_correcting_encoder.rs @@ -1,11 +1,54 @@ -use anyhow::*; +use std::io::Read; +use anyhow::*; +use reed_solomon::Encoder; +use reed_solomon::{Buffer, Decoder}; + +const BLOCK_SIZE: usize = 256; +const ECC_LENGTH: usize = 8; + +// TODO: make the API streaming friendly pub fn encode(bytes: &[u8]) -> Result> { - Ok(Vec::from(bytes)) + let encoder = Encoder::new(ECC_LENGTH); + + let encoded_blocks = bytes + .chunks(BLOCK_SIZE) + .map(|chunk| encoder.encode(chunk)) + .collect::>(); + + let mut result = vec![]; + + dbg!(encoded_blocks.len()); + for buffer in encoded_blocks { + dbg!(buffer.bytes().count()); + for byte in buffer.bytes() { + result.push(byte?); + } + } + + dbg!(result.len()); + Ok(result) } pub fn decode(bytes: &[u8]) -> Result> { - Ok(Vec::from(bytes)) + let decoder = Decoder::new(ECC_LENGTH); + let decoded_blocks = bytes + .chunks(BLOCK_SIZE + ECC_LENGTH) + .map(|chunk| decoder.correct(chunk, None).map_err(|e| anyhow!(format!("{:#?}", e)))) + .collect::>>()?; + + let mut result = vec![]; + + dbg!(decoded_blocks.len()); + for buffer in decoded_blocks { + dbg!(buffer.bytes().count()); + for byte in buffer.data() { + result.push(byte.clone()); + } + } + + dbg!(result.len()); + Ok(result) } #[cfg(test)] @@ -19,7 +62,29 @@ mod must { use pretty_assertions::assert_eq; #[test] - #[ignore = "wip"] + fn encode_small_amounts_of_data() -> Result<()> { + let mut original: [u8; 32] = [0; 32]; + thread_rng().fill_bytes(&mut original); + + let decoded = decode(&encode(&original)?)?; + + assert_eq!(decoded, original); + + Ok(()) + } + #[test] + fn encode_large_amounts_of_data() -> Result<()> { + let mut original: [u8; 1024 * 1024] = [0; 1024 * 1024]; + thread_rng().fill_bytes(&mut original); + + let decoded = decode(&encode(&original)?)?; + + assert_eq!(decoded, original); + + Ok(()) + } + + #[test] fn survive_data_corruption() -> Result<()> { let mut original: [u8; 32] = [0; 32]; thread_rng().fill_bytes(&mut original); @@ -32,7 +97,7 @@ mod must { let mut corrupted = Vec::from(encoded); corrupted[corrupt_byte_index] = rand::thread_rng().gen::(); - let decoded = decode(&corrupted).unwrap(); + let decoded = decode(&corrupted)?; assert_eq!(decoded, original);