feat: HostBridge trait impl

src/host/bridge.rs

@@ -0,0 +1,65 @@
+use std::io::{Read, Write};
+use std::path::{Path, PathBuf};
+
+use remotefs::fs::{Metadata, UnixPex};
+use remotefs::File;
+
+use super::HostResult;
+
+/// Trait to bridge a remote filesystem to the host filesystem
+///
+/// In case of `Localhost` this should be effortless, while for remote hosts this should
+/// implement a real bridge when the resource is first loaded on the local
+///  filesystem and then processed on the remote.
+pub trait HostBridge {
+    /// Print working directory
+    fn pwd(&mut self) -> HostResult<PathBuf>;
+
+    /// Change working directory with the new provided directory
+    fn change_wrkdir(&mut self, new_dir: &Path) -> HostResult<PathBuf>;
+
+    /// Make a directory at path and update the file list (only if relative)
+    fn mkdir(&mut self, dir_name: &Path) -> HostResult<()> {
+        self.mkdir_ex(dir_name, false)
+    }
+
+    /// Extended option version of makedir.
+    /// ignex: don't report error if directory already exists
+    fn mkdir_ex(&mut self, dir_name: &Path, ignore_existing: bool) -> HostResult<()>;
+
+    /// Remove file entry
+    fn remove(&mut self, entry: &File) -> HostResult<()>;
+
+    /// Rename file or directory to new name
+    fn rename(&mut self, entry: &File, dst_path: &Path) -> HostResult<()>;
+
+    /// Copy file to destination path
+    fn copy(&mut self, entry: &File, dst: &Path) -> HostResult<()>;
+
+    /// Stat file and create a File
+    fn stat(&mut self, path: &Path) -> HostResult<File>;
+
+    /// Returns whether provided file path exists
+    fn exists(&mut self, path: &Path) -> HostResult<bool>;
+
+    /// Get content of a directory
+    fn list_dir(&mut self, path: &Path) -> HostResult<Vec<File>>;
+
+    /// Set file stat
+    fn setstat(&mut self, path: &Path, metadata: &Metadata) -> HostResult<()>;
+
+    /// Execute a command on localhost
+    fn exec(&mut self, cmd: &str) -> HostResult<String>;
+
+    /// Create a symlink from src to dst
+    fn symlink(&mut self, src: &Path, dst: &Path) -> HostResult<()>;
+
+    /// Change file mode to file, according to UNIX permissions
+    fn chmod(&mut self, path: &Path, pex: UnixPex) -> HostResult<()>;
+
+    /// Open file for reading
+    fn open_file(&mut self, file: &Path) -> HostResult<Box<dyn Read + Send>>;
+
+    /// Open file for writing
+    fn create_file(&mut self, file: &Path) -> HostResult<Box<dyn Write + Send>>;
+}

src/ui/activities/filetransfer/actions/change_dir.rs

@@ -129,7 +129,17 @@ impl FileTransferActivity {
                     return;
                 }
             },
-            FileExplorerTab::Remote => self.host.file_exists(path.as_path()),
+            FileExplorerTab::Remote => match self.host.exists(path.as_path()) {
+                Ok(e) => e,
+                Err(err) => {
+                    error!(
+                        "Failed to check whether {} exists on host: {}",
+                        path.display(),
+                        err
+                    );
+                    return;
+                }
+            },
             _ => return,
         };
         let name = path

src/ui/activities/filetransfer/actions/newfile.rs

@@ -23,7 +23,7 @@ impl FileTransferActivity {
         }
         // Create file
         let file_path: PathBuf = PathBuf::from(input.as_str());
-        if let Err(err) = self.host.open_file_write(file_path.as_path()) {
+        if let Err(err) = self.host.create_file(file_path.as_path()) {
             self.log_and_alert(
                 LogLevel::Error,
                 format!("Could not create file \"{}\": {}", file_path.display(), err),

src/ui/activities/filetransfer/actions/walkdir.rs

@@ -18,7 +18,12 @@ impl FileTransferActivity {
     pub(crate) fn action_walkdir_local(&mut self) -> Result<Vec<File>, WalkdirError> {
         let mut acc = Vec::with_capacity(32_768);
 
-        self.walkdir(&mut acc, &self.host.pwd(), |activity, path| {
+        let pwd = self
+            .host
+            .pwd()
+            .map_err(|e| WalkdirError::Error(e.to_string()))?;
+
+        self.walkdir(&mut acc, &pwd, |activity, path| {
             activity.host.list_dir(path).map_err(|e| e.to_string())
         })?;
 

src/ui/activities/filetransfer/mod.rs

@@ -32,7 +32,7 @@ use super::{Activity, Context, ExitReason};
 use crate::config::themes::Theme;
 use crate::explorer::{FileExplorer, FileSorting};
 use crate::filetransfer::{Builder, FileTransferParams};
-use crate::host::Localhost;
+use crate::host::{HostBridge, Localhost};
 use crate::system::config_client::ConfigClient;
 use crate::system::watcher::FsWatcher;
 
@@ -214,7 +214,7 @@ pub struct FileTransferActivity {
     /// Whether should redraw UI
     redraw: bool,
     /// Localhost bridge
-    host: Localhost,
+    host: Box<dyn HostBridge>,
     /// Remote host client
     client: Box<dyn RemoteFs>,
     /// Browser
@@ -247,7 +247,7 @@ impl FileTransferActivity {
                     .default_input_listener(ticks),
             ),
             redraw: true,
-            host,
+            host: Box::new(host),
             client: Builder::build(params.protocol, params.params.clone(), &config_client),
             browser: Browser::new(&config_client),
             log_records: VecDeque::with_capacity(256), // 256 events is enough I guess

src/ui/activities/filetransfer/session.rs

@@ -3,8 +3,7 @@
 //! `filetransfer_activiy` is the module which implements the Filetransfer activity, which is the main activity afterall
 
 // Locals
-use std::fs::File as StdFile;
-use std::io::{Read, Seek, Write};
+use std::io::{Read, Write};
 use std::path::{Path, PathBuf};
 use std::time::Instant;
 
@@ -26,8 +25,6 @@ const BUFSIZE: usize = 65535;
 enum TransferErrorReason {
     #[error("File transfer aborted")]
     Abrupted,
-    #[error("Failed to seek file: {0}")]
-    CouldNotRewind(std::io::Error),
     #[error("I/O error on localhost: {0}")]
     LocalIoError(std::io::Error),
     #[error("Host error: {0}")]
@@ -153,7 +150,10 @@ impl FileTransferActivity {
     pub(super) fn reload_local_dir(&mut self) {
         self.mount_blocking_wait("Loading local directory...");
 
-        let wrkdir: PathBuf = self.host.pwd();
+        let Ok(wrkdir) = self.host.pwd() else {
+            error!("failed to get host working directory");
+            return;
+        };
 
         let res = self.local_scan(wrkdir.as_path());
 
@@ -460,13 +460,12 @@ impl FileTransferActivity {
         }
         // Upload file
         // Try to open local file
-        match self.host.open_file_read(local.path.as_path()) {
-            Ok(fhnd) => match self.client.create(remote, &metadata) {
-                Ok(rhnd) => {
-                    self.filetransfer_send_one_with_stream(local, remote, file_name, fhnd, rhnd)
-                }
+        match self.host.open_file(local.path.as_path()) {
+            Ok(local_read) => match self.client.create(remote, &metadata) {
+                Ok(rhnd) => self
+                    .filetransfer_send_one_with_stream(local, remote, file_name, local_read, rhnd),
                 Err(err) if err.kind == RemoteErrorType::UnsupportedFeature => {
-                    self.filetransfer_send_one_wno_stream(local, remote, file_name, fhnd)
+                    self.filetransfer_send_one_wno_stream(local, remote, file_name, local_read)
                 }
                 Err(err) => Err(TransferErrorReason::FileTransferError(err)),
             },
@@ -480,17 +479,18 @@ impl FileTransferActivity {
         local: &File,
         remote: &Path,
         file_name: String,
-        mut reader: StdFile,
+        mut reader: Box<dyn Read + Send>,
         mut writer: WriteStream,
     ) -> Result<(), TransferErrorReason> {
         // Write file
-        let file_size: usize = reader.seek(std::io::SeekFrom::End(0)).unwrap_or(0) as usize;
+        let file_size = self
+            .host
+            .stat(local.path())
+            .map_err(TransferErrorReason::HostError)
+            .map(|x| x.metadata().size as usize)?;
         // Init transfer
         self.transfer.partial.init(file_size);
-        // rewind
-        if let Err(err) = reader.rewind() {
-            return Err(TransferErrorReason::CouldNotRewind(err));
-        }
+
         // Write remote file
         let mut total_bytes_written: usize = 0;
         let mut last_progress_val: f64 = 0.0;
@@ -583,7 +583,7 @@ impl FileTransferActivity {
         local: &File,
         remote: &Path,
         file_name: String,
-        mut reader: StdFile,
+        reader: Box<dyn Read + Send>,
     ) -> Result<(), TransferErrorReason> {
         // Sync file size and attributes before transfer
         let metadata = self
@@ -592,18 +592,19 @@ impl FileTransferActivity {
             .map_err(TransferErrorReason::HostError)
             .map(|x| x.metadata().clone())?;
         // Write file
-        let file_size: usize = reader.seek(std::io::SeekFrom::End(0)).unwrap_or(0) as usize;
+        let file_size = self
+            .host
+            .stat(local.path())
+            .map_err(TransferErrorReason::HostError)
+            .map(|x| x.metadata().size as usize)?;
         // Init transfer
         self.transfer.partial.init(file_size);
-        // rewind
-        if let Err(err) = reader.rewind() {
-            return Err(TransferErrorReason::CouldNotRewind(err));
-        }
+
         // Draw before
         self.update_progress_bar(format!("Uploading \"{file_name}\"…"));
         self.view();
         // Send file
-        if let Err(err) = self.client.create_file(remote, &metadata, Box::new(reader)) {
+        if let Err(err) = self.client.create_file(remote, &metadata, reader) {
             return Err(TransferErrorReason::FileTransferError(err));
         }
         // set stat
@@ -889,7 +890,7 @@ impl FileTransferActivity {
         }
 
         // Try to open local file
-        match self.host.open_file_write(local) {
+        match self.host.create_file(local) {
             Ok(local_file) => {
                 // Download file from remote
                 match self.client.open(remote.path.as_path()) {
@@ -913,7 +914,7 @@ impl FileTransferActivity {
         remote: &File,
         file_name: String,
         mut reader: ReadStream,
-        mut writer: StdFile,
+        mut writer: Box<dyn Write + Send>,
     ) -> Result<(), TransferErrorReason> {
         let mut total_bytes_written: usize = 0;
         // Init transfer
@@ -1020,7 +1021,7 @@ impl FileTransferActivity {
         // Open local file
         let reader = self
             .host
-            .open_file_write(local)
+            .create_file(local)
             .map_err(TransferErrorReason::HostError)
             .map(Box::new)?;
         // Init transfer
@@ -1207,7 +1208,7 @@ impl FileTransferActivity {
     // file changed
 
     /// Check whether provided file has changed on local disk, compared to remote file
-    fn has_local_file_changed(&self, local: &Path, remote: &File) -> bool {
+    fn has_local_file_changed(&mut self, local: &Path, remote: &File) -> bool {
         // check if files are equal (in case, don't transfer)
         if let Ok(local_file) = self.host.stat(local) {
             local_file.metadata().modified != remote.metadata().modified
@@ -1231,10 +1232,10 @@ impl FileTransferActivity {
     // -- file exist
 
     pub(crate) fn local_file_exists(&mut self, p: &Path) -> bool {
-        self.host.file_exists(p)
+        self.host.exists(p).unwrap_or_default()
     }
 
     pub(crate) fn remote_file_exists(&mut self, p: &Path) -> bool {
-        self.client.stat(p).is_ok()
+        self.client.exists(p).unwrap_or_default()
     }
 }