Get options for filesystem

Cargo.lock

@@ -558,6 +558,7 @@ dependencies = [
  "fuser",
  "log",
  "rustcryptfs-lib",
+ "serde_json",
  "thiserror",
 ]
 

rustcryptfs-linux/Cargo.toml

@@ -9,4 +9,5 @@ edition = "2021"
 fuser = "0.11"
 log = "0.4"
 rustcryptfs-lib = { path = "../rustcryptfs-lib" }
-thiserror = "1.0"
+thiserror = "1.0"
+serde_json = "1.0"

rustcryptfs-linux/src/encrypted_filesystem.rs

@@ -1,20 +1,36 @@
-use std::path::Path;
+use std::{fs, path::Path};
 
 use fuser::Filesystem;
-use rustcryptfs_lib::config::CryptConf;
+use rustcryptfs_lib::{config::CryptConf, filename::FilenameDecoder};
 
-pub struct EncryptedFs {}
+use crate::error::Result;
+
+pub struct EncryptedFs {
+    master_key: Vec<u8>,
+    filename_decoder: FilenameDecoder,
+}
 
 impl EncryptedFs {
-    pub fn new<P>(path: P) -> Self
+    pub fn new<P>(path: P, password: &str) -> Result<Self>
     where
         P: AsRef<Path>,
     {
-        todo!()
+        let path = path.as_ref();
-    }
 
-    pub fn new_from_config(config: &CryptConf) -> Self {
+        let conf_path = path.join("gocryptfs.conf");
-        Self {}
+
+        let content = fs::read_to_string(conf_path)?;
+
+        let conf: CryptConf = serde_json::from_str(&content)?;
+
+        let master_key = conf.get_master_key(password.as_bytes())?;
+
+        let filename_decoder = FilenameDecoder::new(&master_key)?;
+
+        Ok(Self {
+            master_key,
+            filename_decoder,
+        })
     }
 
     pub fn mount<P>(self, mountpoint: P)

rustcryptfs-linux/src/error.rs

@@ -0,0 +1,18 @@
+use thiserror::Error;
+
+pub type Result<T> = std::result::Result<T, Error>;
+
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error(transparent)]
+    IoError(#[from] std::io::Error),
+
+    #[error(transparent)]
+    JsonError(#[from] serde_json::Error),
+
+    #[error(transparent)]
+    RustCryptFsError(#[from] rustcryptfs_lib::error::Error),
+
+    #[error(transparent)]
+    RustCryptFsFilenameError(#[from] rustcryptfs_lib::error::FilenameDecryptError),
+}

rustcryptfs-linux/src/lib.rs

@@ -1,3 +1,4 @@
 mod encrypted_filesystem;
+pub mod error;
 
 pub use encrypted_filesystem::EncryptedFs;

rustcryptfs/src/main.rs

@@ -108,7 +108,7 @@ fn decrypt_file(c: &DecryptCommand) -> anyhow::Result<()> {
 fn mount(mount: &MountCommand) -> anyhow::Result<()> {
     use rustcryptfs_linux::EncryptedFs;
 
-    let fs = EncryptedFs::new(&mount.path);
+    let fs = EncryptedFs::new(&mount.path, mount.password.as_ref().unwrap())?;
 
     fs.mount(&mount.mountpoint);
     Ok(())