X-Git-Url: https://code.octet-stream.net/hashgood/blobdiff_plain/e92fb6d7ae75915b4395686b721cf7d92841b994..93ceef0a11e57980c967222a6504da7005895a5b:/src/verify.rs?ds=inline diff --git a/src/verify.rs b/src/verify.rs index 3d92964..0f2d1d8 100644 --- a/src/verify.rs +++ b/src/verify.rs @@ -8,7 +8,7 @@ use std::fs::File; use std::io; use std::io::prelude::*; use std::io::BufReader; -use std::path::PathBuf; +use std::path::Path; /// Calculate a list of candidate hashes based on the options specified. /// If no hash options have been specified returns None. @@ -61,20 +61,20 @@ fn get_from_clipboard() -> Result { filename: None, bytes, }; - return Ok(CandidateHashes { + Ok(CandidateHashes { alg, hashes: vec![candidate], source: VerificationSource::Clipboard, - }); + }) } #[cfg(not(feature = "paste"))] { - return Err("Paste not implemented".to_owned()); + Err("Paste not implemented".to_owned()) } } /// Generate a candidate hash from the digests file specified (could be "-" for STDIN), or throw an error. -fn get_from_file(path: &PathBuf) -> Result { +fn get_from_file(path: &Path) -> Result { // Get a reader for either standard input or the chosen path let reader: Box = if path.to_str() == Some("-") { Box::new(std::io::stdin()) @@ -96,7 +96,7 @@ fn get_from_file(path: &PathBuf) -> Result { let line = line.trim().to_owned(); // Does our first line look like a raw hash on its own? If so, use that - if let Some(candidate) = read_raw_candidate_from_file(&line, &path) { + if let Some(candidate) = read_raw_candidate_from_file(&line, path) { return Ok(candidate); } @@ -105,7 +105,7 @@ fn get_from_file(path: &PathBuf) -> Result { let full_lines = vec![Ok(line)].into_iter().chain(reader.lines()); // Does the entire file look like a coreutils-style digests file? (SHA1SUMS, etc.) - if let Some(candidate) = read_coreutils_digests_from_file(full_lines, &path) { + if let Some(candidate) = read_coreutils_digests_from_file(full_lines, path) { return Ok(candidate); } @@ -129,11 +129,11 @@ fn try_parse_hash(s: &str) -> Option<(Algorithm, Vec)> { Some((alg, bytes)) } -fn read_raw_candidate_from_file(line: &str, path: &PathBuf) -> Option { +fn read_raw_candidate_from_file(line: &str, path: &Path) -> Option { let (alg, bytes) = try_parse_hash(line)?; Some(CandidateHashes { alg, - source: VerificationSource::RawFile(path.clone()), + source: VerificationSource::RawFile(path.to_string_lossy().to_string()), hashes: vec![CandidateHash { bytes, filename: None, @@ -141,47 +141,56 @@ fn read_raw_candidate_from_file(line: &str, path: &PathBuf) -> Option(lines: I, path: &PathBuf) -> Option +fn read_coreutils_digests_from_file(lines: I, path: &Path) -> Option where I: Iterator>, S: AsRef, { let mut hashes = vec![]; let mut alg: Option = None; - for l in lines { - if let Ok(l) = l { - let l = l.as_ref().trim(); - // Allow (ignore) blank lines - if l.is_empty() { - continue; - } - // Expected format - // - let (line_alg, bytes, filename) = match l - .find(' ') - .and_then(|space_pos| (l.get(0..space_pos)).zip(l.get(space_pos + 2..))) - .and_then(|(maybe_hash, filename)| { + for l in lines.flatten() { + let l = l.as_ref().trim(); + // Allow (ignore) blank lines + if l.is_empty() { + continue; + } + // Expected format + // + let (line_alg, bytes, filename) = match l + .find(' ') + .and_then(|space_pos| { + // Char before filename should be space for text or * for binary + match l.chars().nth(space_pos + 1) { + Some(' ') | Some('*') => (l.get(..space_pos)).zip(l.get(space_pos + 2..)), + _ => None, + } + }) + .and_then(|(maybe_hash, filename)| { + // Filename should be in this position without extra whitespace + if filename.trim() == filename { try_parse_hash(maybe_hash).map(|(alg, bytes)| (alg, bytes, filename)) - }) { - Some(t) => t, - None => { - // if we have a line with content we cannot parse, this is an error - return None; + } else { + None } - }; - if alg.is_some() && alg != Some(line_alg) { - // Different algorithms in the same digest file are not supported + }) { + Some(t) => t, + None => { + // if we have a line with content we cannot parse, this is an error return None; - } else { - // If we are the first line, we define the overall algorithm - alg = Some(line_alg); } - // So far so good - create an entry for this line - hashes.push(CandidateHash { - bytes, - filename: Some(filename.to_owned()), - }); + }; + if alg.is_some() && alg != Some(line_alg) { + // Different algorithms in the same digest file are not supported + return None; + } else { + // If we are the first line, we define the overall algorithm + alg = Some(line_alg); } + // So far so good - create an entry for this line + hashes.push(CandidateHash { + bytes, + filename: Some(filename.to_owned()), + }); } // It is a failure if we got zero hashes or we somehow don't know the algorithm @@ -196,7 +205,7 @@ where // Otherwise all is well and we can return our results Some(CandidateHashes { alg, - source: VerificationSource::DigestsFile(path.clone()), + source: VerificationSource::DigestsFile(path.to_string_lossy().to_string()), hashes, }) } @@ -273,13 +282,11 @@ pub fn verify_hash<'a>(calculated: &Hash, candidates: &'a CandidateHashes) -> Ve #[cfg(test)] mod tests { - use std::path::Path; - use super::*; #[test] fn test_read_raw_inputs() { - let example_path: PathBuf = "some_file".into(); + let example_path = Path::new("some_file"); let valid_md5 = "d229da563da18fe5d58cd95a6467d584"; let valid_sha1 = "b314c7ebb7d599944981908b7f3ed33a30e78f3a"; let valid_sha1_2 = valid_sha1.to_uppercase(); @@ -292,28 +299,28 @@ mod tests { let invalid5 = "1eb85fc97224598dad1852b5d 483bbcf0aa8608790dcc657a5a2a761ae9c8c6"; assert!(matches!( - read_raw_candidate_from_file(valid_md5, &example_path), + read_raw_candidate_from_file(valid_md5, example_path), Some(CandidateHashes { alg: Algorithm::Md5, .. }) )); assert!(matches!( - read_raw_candidate_from_file(valid_sha1, &example_path), + read_raw_candidate_from_file(valid_sha1, example_path), Some(CandidateHashes { alg: Algorithm::Sha1, .. }) )); assert!(matches!( - read_raw_candidate_from_file(&valid_sha1_2, &example_path), + read_raw_candidate_from_file(&valid_sha1_2, example_path), Some(CandidateHashes { alg: Algorithm::Sha1, .. }) )); assert!(matches!( - read_raw_candidate_from_file(valid_sha256, &example_path), + read_raw_candidate_from_file(valid_sha256, example_path), Some(CandidateHashes { alg: Algorithm::Sha256, .. @@ -321,7 +328,7 @@ mod tests { )); for i in &[invalid1, invalid2, invalid3, invalid4, invalid5] { - assert!(read_raw_candidate_from_file(*i, &example_path).is_none()); + assert!(read_raw_candidate_from_file(*i, example_path).is_none()); } } @@ -331,9 +338,9 @@ mod tests { 75eb7420a9f5a260b04a3e8ad51e50f2838a17fc lel.txt fe6c26d485a3573a1cb0ad0682f5105325a1905f shasums"; - let lines = shasums.lines().map(|l| std::io::Result::Ok(l)); - let path = Path::new("SHASUMS").to_owned(); - let candidates = read_coreutils_digests_from_file(lines, &path); + let lines = shasums.lines().map(std::io::Result::Ok); + let path = Path::new("SHASUMS"); + let candidates = read_coreutils_digests_from_file(lines, path); assert_eq!( candidates, @@ -353,8 +360,24 @@ mod tests { filename: Some("shasums".to_owned()), } ], - source: VerificationSource::DigestsFile(path), + source: VerificationSource::DigestsFile(path.to_string_lossy().to_string()), }) ); } + + #[test] + fn test_invalid_shasums() { + let no_format = "4b91f7a387a6edd4a7c0afb2897f1ca968c9695b cp"; + let invalid_format = "4b91f7a387a6edd4a7c0afb2897f1ca968c9695b .cp"; + let extra_space = "4b91f7a387a6edd4a7c0afb2897f1ca968c9695b cp"; + + for digest in [no_format, invalid_format, extra_space] { + let lines = digest.lines().map(std::io::Result::Ok); + assert!( + read_coreutils_digests_from_file(lines, Path::new("SHASUMS")).is_none(), + "Should be invalid digest: {:?}", + digest + ); + } + } }