tests: Add file transfer test

Signed-off-by: Siddharth Chandrasekaran <sidcha.dev@gmail.com>

libosdp/Cargo.toml

@@ -23,7 +23,9 @@ thiserror = { version = "1.0.50", optional = true }
 [dev-dependencies]
 env_logger = "0.11.3"
 multiqueue = "0.3.2"
+rand = "0.8.5"
 ringbuf = "0.3.3"
+sha256 = "1.5.0"
 
 [features]
 default = ["std"]

libosdp/tests/commands.rs

@@ -3,6 +3,9 @@
 //
 // SPDX-License-Identifier: Apache-2.0
 
+mod common;
+type Result<T> = core::result::Result<T, libosdp::OsdpError>;
+
 use std::{sync::MutexGuard, thread, time};
 
 use libosdp::{
@@ -14,10 +17,6 @@ use crate::common::{
     device::CpDevice, device::PdDevice, memory_channel::MemoryChannel, threadbus::ThreadBus,
 };
 
-mod common;
-
-type Result<T> = core::result::Result<T, libosdp::OsdpError>;
-
 fn send_command(mut cp: MutexGuard<'_, ControlPanel>, command: OsdpCommand) -> Result<()> {
     cp.send_command(0, command)
 }
@@ -64,8 +63,8 @@ fn test_commands() -> Result<()> {
     notify_event(pd.get_device(), event.clone())?;
     assert_eq!(
         cp.receiver.recv().unwrap(),
-        (0 as i32, event),
-        "Cardread event check failed"
+        (0_i32, event),
+        "Card read event check failed"
     );
 
     Ok(())

libosdp/tests/common/mod.rs

@@ -3,27 +3,14 @@
 //
 // SPDX-License-Identifier: Apache-2.0
 
-use std::{
-    collections::hash_map::DefaultHasher,
-    hash::{Hash, Hasher},
-};
-
 pub mod device;
 pub mod memory_channel;
 pub mod threadbus;
 
 pub fn setup() {
     env_logger::builder()
-        .filter_level(log::LevelFilter::Debug)
+        .filter_level(log::LevelFilter::Info)
         .format_target(false)
         .format_timestamp(None)
         .init();
 }
-
-pub fn str_to_channel_id(key: &str) -> i32 {
-    let mut hasher = DefaultHasher::new();
-    key.hash(&mut hasher);
-    let mut id: u64 = hasher.finish();
-    id = (id >> 32) ^ id & 0xffffffff;
-    id as i32
-}

libosdp/tests/common/threadbus.rs

@@ -4,7 +4,14 @@
 // SPDX-License-Identifier: Apache-2.0
 
 use multiqueue::{BroadcastReceiver, BroadcastSender};
-use std::{fmt::Debug, io::Error, io::ErrorKind, sync::Mutex};
+use std::{
+    collections::hash_map::DefaultHasher,
+    fmt::Debug,
+    hash::{Hash, Hasher},
+    io::Error,
+    io::ErrorKind,
+    sync::Mutex,
+};
 
 pub struct ThreadBus {
     name: String,
@@ -13,12 +20,20 @@ pub struct ThreadBus {
     recv: Mutex<BroadcastReceiver<Vec<u8>>>,
 }
 
+fn str_to_channel_id(key: &str) -> i32 {
+    let mut hasher = DefaultHasher::new();
+    key.hash(&mut hasher);
+    let mut id: u64 = hasher.finish();
+    id = (id >> 32) ^ id & 0xffffffff;
+    id as i32
+}
+
 impl ThreadBus {
     pub fn new(name: &str) -> Self {
         let (send, recv) = multiqueue::broadcast_queue(4);
         Self {
             name: name.into(),
-            id: super::str_to_channel_id(name),
+            id: str_to_channel_id(name),
             send: Mutex::new(send),
             recv: Mutex::new(recv),
         }

libosdp/tests/file_transfer.rs

@@ -0,0 +1,173 @@
+//
+// Copyright (c) 2024 Siddharth Chandrasekaran <sidcha.dev@gmail.com>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+mod common;
+
+type Result<T> = core::result::Result<T, libosdp::OsdpError>;
+
+use core::time::Duration;
+use libosdp::{OsdpCommand, OsdpCommandFileTx, OsdpError, OsdpFileOps};
+use rand::Rng;
+use std::{
+    cmp,
+    collections::HashMap,
+    fs::File,
+    io::{BufWriter, Write},
+    path::PathBuf,
+    str::FromStr,
+    thread,
+};
+
+use crate::common::{device::CpDevice, device::PdDevice, memory_channel::MemoryChannel};
+
+#[cfg(not(target_os = "windows"))]
+use std::os::unix::prelude::FileExt;
+#[cfg(target_os = "windows")]
+use std::os::windows::fs::FileExt;
+
+/// OSDP file transfer context
+#[derive(Debug)]
+pub struct OsdpFileManager {
+    files: HashMap<i32, PathBuf>,
+    file: Option<File>,
+}
+
+impl OsdpFileManager {
+    pub fn new() -> Self {
+        Self {
+            files: HashMap::new(),
+            file: None,
+        }
+    }
+
+    pub fn register_file(&mut self, id: i32, path: &str) {
+        let _ = self.files.insert(id, PathBuf::from_str(path).unwrap());
+    }
+}
+
+impl OsdpFileOps for OsdpFileManager {
+    fn open(&mut self, id: i32, read_only: bool) -> Result<usize> {
+        let path = self
+            .files
+            .get(&id)
+            .ok_or(OsdpError::FileTransfer("Invalid file ID"))?;
+        log::debug!("File {:?}", path);
+        let file = if read_only {
+            File::open(path.as_os_str())?
+        } else {
+            File::create(path.as_os_str())?
+        };
+        let size = file.metadata()?.len() as usize;
+        self.file = Some(file);
+        Ok(size)
+    }
+
+    fn offset_read(&self, buf: &mut [u8], off: u64) -> Result<usize> {
+        let file = self
+            .file
+            .as_ref()
+            .ok_or(OsdpError::FileTransfer("File not open"))?;
+
+        #[cfg(not(target_os = "windows"))]
+        let r = file.read_at(buf, off)?;
+
+        #[cfg(target_os = "windows")]
+        let r = file.seek_read(buf, off)?;
+
+        Ok(r)
+    }
+
+    fn offset_write(&self, buf: &[u8], off: u64) -> Result<usize> {
+        let file = self
+            .file
+            .as_ref()
+            .ok_or(OsdpError::FileTransfer("File not open"))?;
+
+        #[cfg(not(target_os = "windows"))]
+        let r = file.write_at(buf, off)?;
+
+        #[cfg(target_os = "windows")]
+        let r = file.seek_write(buf, off)?;
+
+        Ok(r)
+    }
+
+    fn close(&mut self) -> Result<()> {
+        let _ = self.file.take().unwrap();
+        Ok(())
+    }
+}
+
+fn create_random_file<P>(path: P, size: usize)
+where
+    P: AsRef<std::path::Path>,
+{
+    if path.as_ref().exists() {
+        return;
+    }
+
+    let mut buffer = [0; 1024];
+    let mut remaining_size = size;
+
+    let f = File::create(path).unwrap();
+    let mut writer = BufWriter::new(f);
+
+    let mut rng = rand::thread_rng();
+
+    while remaining_size > 0 {
+        let to_write = cmp::min(remaining_size, buffer.len());
+        let buffer = &mut buffer[..to_write];
+        rng.fill(buffer);
+        writer.write_all(buffer).unwrap();
+        remaining_size -= to_write;
+    }
+}
+
+#[test]
+fn test_file_transfer() -> Result<()> {
+    common::setup();
+    let (cp_bus, pd_bus) = MemoryChannel::new();
+    let pd = PdDevice::new(Box::new(pd_bus))?;
+    let cp = CpDevice::new(Box::new(cp_bus))?;
+
+    create_random_file("/tmp/ftx_test.in", 50 * 1024);
+
+    thread::sleep(Duration::from_secs(2));
+
+    let mut fm = OsdpFileManager::new();
+    fm.register_file(1, "/tmp/ftx_test.in");
+
+    cp.get_device().register_file_ops(0, Box::new(fm))?;
+
+    let mut fm = OsdpFileManager::new();
+    fm.register_file(1, "/tmp/ftx_test.out");
+
+    pd.get_device().register_file_ops(Box::new(fm))?;
+
+    let command = OsdpCommand::FileTx(OsdpCommandFileTx::new(1, 0));
+    cp.get_device().send_command(0, command.clone())?;
+
+    assert_eq!(
+        pd.receiver.recv().unwrap(),
+        command,
+        "PD file tx command callback verification failed!"
+    );
+
+    loop {
+        let (size, offset) = pd.get_device().file_transfer_status()?;
+        log::info!("File TX in progress: size:{size} offset:{offset}");
+        if size == offset {
+            break;
+        }
+        thread::sleep(Duration::from_secs(1));
+    }
+
+    assert_eq!(
+        sha256::digest(std::fs::read("/tmp/ftx_test.in").unwrap()),
+        sha256::digest(std::fs::read("/tmp/ftx_test.out").unwrap()),
+        "Transferred file hash mismatch!"
+    );
+    Ok(())
+}