commit 93d7cda28fead6f518a04fcc2c6aedd615fffcce
Author: networkException <git@nwex.de>
Date:   Sun Apr 10 19:49:40 2022 +0200

    Everywhere: Initial working version

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..a4de783
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,482 @@
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+# It is not intended for manual editing.
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+]
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+ "winapi-x86_64-pc-windows-gnu",
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+dependencies = [
+ "winapi",
+]
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+[[package]]
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..bc1624e
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "restic-integrity"
+version = "1.0.0"
+edition = "2021"
+authors = [ "networkException" ]
+description = "Check the integrity of a restic repository without unlocking it"
+
+[dependencies]
+clap = { version = "3.1.8", features = [ "derive" ] }
+sha2 = "0.10.2"
+rayon = "1.5.1"
+indicatif = { version = "0.16.2", features = [ "rayon" ] }
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..5676b67
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,91 @@
+use clap::Parser;
+use indicatif::{ParallelProgressIterator, ProgressBar, ProgressStyle, ProgressFinish};
+use rayon::ThreadPoolBuilder;
+use rayon::iter::{ParallelIterator, IntoParallelRefIterator};
+use std::fs::File;
+use std::path::Path;
+use std::io::{self, Result, Error, ErrorKind};
+use sha2::{Sha256, Digest};
+
+#[derive(Parser, Debug)]
+#[clap(author, version, about, long_about = None)]
+struct Args {
+    /// The path to the repository
+    path: String,
+
+    /// The number of jobs to use for hashing
+    #[clap(short, long, default_value_t = 0)]
+    jobs: u8,
+
+    /// If the path argument should be used to check all files in a directory it points to instead of a restic repository (use for testing)
+    #[clap(short, long)]
+    single_directory: bool
+}
+
+fn run() -> Result<()> {
+    let args = Args::parse();
+    let path = Path::new(&args.path);
+
+    let mut directories_with_hashed_files = Vec::new();
+
+    if args.single_directory {
+        directories_with_hashed_files.push(path.to_path_buf());
+    } else {
+        directories_with_hashed_files.push(path.join(Path::new("index")));
+        directories_with_hashed_files.push(path.join(Path::new("keys")));
+        directories_with_hashed_files.push(path.join(Path::new("snapshots")));
+
+        for subdirectory in path.join(Path::new("data")).read_dir()? {
+            let subdirectory = subdirectory?;
+
+            directories_with_hashed_files.push(subdirectory.path());
+        }
+    }
+
+    let mut hashed_files = Vec::new();
+
+    for directory in directories_with_hashed_files {
+        for file in directory.read_dir()? {
+            let file = file?;
+            let path = file.path();
+
+            hashed_files.push(path);
+        }
+    }
+
+    let progress_bar = ProgressBar::new(hashed_files.len() as u64);
+    progress_bar.set_style(ProgressStyle::default_bar()
+        .template("Hashing files... {bar} {pos:>7}/{len:7} [{elapsed_precise}] ")
+        .on_finish(ProgressFinish::AndLeave));
+
+    let pool = ThreadPoolBuilder::new().num_threads(args.jobs as usize).build().unwrap();
+
+    return pool.install(|| {
+        return hashed_files.par_iter().progress_with(progress_bar).try_for_each(|path| -> Result<()> {
+            // Just opening the file and hashing using io::copy is roughly ~2.5x fater compared to sha256::digest_file
+            let mut hasher = Sha256::new();
+            let mut file = File::open(path)?;
+
+            io::copy(&mut file, &mut hasher)?;
+
+            let hash = format!("{:x}", hasher.finalize());
+            let filename = path.file_name().unwrap().to_str().unwrap();
+
+            if filename != hash {
+                let path_string = path.to_str().unwrap();
+
+                return Err(Error::new(ErrorKind::Other, format!("Integrity check failed for {}: Expected {}, got {}", path_string, filename, hash)));
+            }
+
+            Ok(())
+        });
+    });
+}
+
+fn main() {
+    let result = run();
+    if result.is_err() {
+        eprintln!("{}", result.unwrap_err());
+        std::process::exit(1);
+    }
+}