From 434e61c231e142b6f5f8d81eb25f4ef97686d85a Mon Sep 17 00:00:00 2001
From: Robin Krahl <robin.krahl@ireas.org>
Date: Sat, 27 Mar 2021 16:10:53 +0100
Subject: Initial commit

---
 src/devices/pro.rs | 99 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 src/devices/pro.rs

(limited to 'src/devices/pro.rs')

diff --git a/src/devices/pro.rs b/src/devices/pro.rs
new file mode 100644
index 0000000..f986f6b
--- /dev/null
+++ b/src/devices/pro.rs
@@ -0,0 +1,99 @@
+use std::fmt;
+
+use crate::{devices, hid, features, DeviceInfo, Error, Model};
+use crate::devices::RawDevice as _;
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[repr(u8)]
+enum Command {
+    GetStatus = 0x00,
+    GetPasswordRetryCount = 0x09,
+    GetUserPasswordRetryCount = 0x0F,
+}
+
+impl From<Command> for u8 {
+    fn from(command: Command) -> u8 {
+        command as u8
+    }
+}
+
+pub struct Pro {
+    hid_device: hidapi::HidDevice,
+    path: std::ffi::CString,
+}
+
+impl Pro {
+    pub(crate) fn new(hid_device: hidapi::HidDevice, device_info: &DeviceInfo<'_>) -> Self {
+        Self {
+            hid_device,
+            path: device_info.device_info.path().to_owned(),
+        }
+    }
+}
+
+impl features::Basic for Pro {
+    fn get_model(&self) -> Model {
+        Model::Pro
+    }
+
+    fn get_status(&self) -> Result<features::Status, Error> {
+        self.execute(Command::GetStatus, ())
+    }
+
+    fn get_user_retry_count(&self) -> Result<u8, Error> {
+        self.execute(Command::GetPasswordRetryCount, ())
+    }
+
+    fn get_admin_retry_count(&self) -> Result<u8, Error> {
+        self.execute(Command::GetUserPasswordRetryCount, ())
+    }
+}
+
+impl devices::RawDevice for Pro {
+    fn execute<T, U>(&self, command_id: impl Into<u8>, data: T) -> Result<U, Error>
+    where
+        T: serde::Serialize,
+        U: serde::de::DeserializeOwned,
+    {
+        use hid::HidDeviceExt as _;
+
+        let command_id = command_id.into();
+        let crc = self.hid_device.send(&hid::Request::new(command_id, data))?;
+
+        let mut response = self.hid_device.receive()?;
+        let mut retry_count = 0;
+        while response.device_status == hid::DeviceStatus::Busy && retry_count < 3 {
+            std::thread::sleep(std::time::Duration::from_millis(100));
+            response = self.hid_device.receive()?;
+            retry_count += 1;
+        }
+
+        if response.device_status != hid::DeviceStatus::Ok {
+            return Err(format!("Got device status {:?}", response.device_status).into());
+        }
+        if response.command_id != command_id {
+            return Err(format!(
+                "Expected command ID {}, got {}",
+                command_id, response.command_id
+            )
+            .into());
+        }
+        if response.command_status != hid::CommandStatus::Ok {
+            return Err(format!("Got command status {:?}", response.command_status).into());
+        }
+        if response.last_crc() != crc {
+            return Err(format!("Expected last_crc {}, got {}", crc, response.last_crc()).into());
+        }
+
+        Ok(response.data)
+    }
+}
+
+impl fmt::Debug for Pro {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("Pro")
+            .field("path", &self.path)
+            .finish()
+    }
+}
+
-- 
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