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/lib.rs | 101 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 src/lib.rs

(limited to 'src/lib.rs')

diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..a26f02f
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,101 @@
+mod crc32;
+mod hid;
+
+pub mod devices;
+pub mod features;
+
+use std::fmt;
+
+pub type Error = Box<dyn std::error::Error>;
+
+const VID_NITROKEY: u16 = 0x20a0;
+const PID_NITROKEY_PRO: u16 = 0x4108;
+const PID_NITROKEY_STORAGE: u16 = 0x4109;
+
+pub fn connect() -> Result<devices::Device, Error> {
+    let manager = Manager::new()?;
+    if let Some(device) = manager.devices().first() {
+        device.connect()
+    } else {
+        Err("No device connected".into())
+    }
+}
+
+pub fn connect_model(model: Model) -> Result<devices::Device, Error> {
+    let manager = Manager::new()?;
+    if let Some(device) = manager.devices().iter().filter(|i| i.model == model).next() {
+        device.connect()
+    } else {
+        Err(format!("No {:?} device connected", model).into())
+    }
+}
+
+pub struct Manager {
+    hidapi: hidapi::HidApi,
+}
+
+impl Manager {
+    pub fn new() -> Result<Self, Error> {
+        let hidapi = hidapi::HidApi::new()?;
+        Ok(Manager { hidapi })
+    }
+
+    pub fn devices(&self) -> Vec<DeviceInfo<'_>> {
+        self.hidapi
+            .device_list()
+            .flat_map(|device_info| {
+                Model::from_vid_pid(device_info.vendor_id(), device_info.product_id()).map(
+                    |model| DeviceInfo {
+                        hidapi: &self.hidapi,
+                        device_info,
+                        model,
+                    },
+                )
+            })
+            .collect()
+    }
+}
+
+#[derive(Clone, Copy, Debug, Eq, Ord, PartialEq, PartialOrd)]
+pub enum Model {
+    Pro,
+    Storage,
+}
+
+impl Model {
+    fn from_vid_pid(vid: u16, pid: u16) -> Option<Model> {
+        match vid {
+            VID_NITROKEY => match pid {
+                PID_NITROKEY_PRO => Some(Model::Pro),
+                PID_NITROKEY_STORAGE => Some(Model::Storage),
+                _ => None,
+            },
+            _ => None,
+        }
+    }
+}
+
+pub struct DeviceInfo<'a> {
+    hidapi: &'a hidapi::HidApi,
+    device_info: &'a hidapi::DeviceInfo,
+    model: Model,
+}
+
+impl<'a> DeviceInfo<'a> {
+    pub fn connect(&self) -> Result<devices::Device, Error> {
+        let hid_device = self.device_info.open_device(self.hidapi)?;
+        match self.model {
+            Model::Pro => Ok(devices::Pro::new(hid_device, self).into()),
+            Model::Storage => unimplemented!(),
+        }
+    }
+}
+
+impl<'a> fmt::Debug for DeviceInfo<'a> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("DeviceInfo")
+            .field("model", &self.model)
+            .field("path", &self.device_info.path())
+            .finish()
+    }
+}
-- 
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