2024-07-01 19:10:45 +00:00
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use crate::app_config::AppConfig;
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2024-07-02 20:55:51 +00:00
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use crate::devices::device::{Device, DeviceId, DeviceInfo};
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use crate::utils::time_utils::time_secs;
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use openssl::x509::X509Req;
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2024-07-01 19:10:45 +00:00
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use std::collections::HashMap;
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2024-07-02 20:55:51 +00:00
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#[derive(thiserror::Error, Debug)]
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pub enum DevicesListError {
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#[error("Enrollment failed: a device with the same ID was already registered!")]
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EnrollFailedDeviceAlreadyExists,
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#[error("Persist device config failed: the configuration of the device was not found!")]
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PersistFailedDeviceNotFound,
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}
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2024-07-01 19:10:45 +00:00
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pub struct DevicesList(HashMap<DeviceId, Device>);
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impl DevicesList {
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/// Load the list of devices. This method should be called only once during the whole execution
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/// of the program
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pub fn load() -> anyhow::Result<Self> {
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let mut list = Self(HashMap::new());
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for f in std::fs::read_dir(AppConfig::get().devices_config_path())? {
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let f = f?.file_name();
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let f = f.to_string_lossy();
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let dev_id = match f.strip_suffix(".conf") {
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Some(s) => DeviceId(s.to_string()),
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// This is not a device configuration file
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None => continue,
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};
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let device_conf = std::fs::read(AppConfig::get().device_config_path(&dev_id))?;
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list.0.insert(dev_id, serde_json::from_slice(&device_conf)?);
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}
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Ok(list)
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}
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/// Check if a device with a given id exists or not
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pub fn exists(&self, id: &DeviceId) -> bool {
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self.0.contains_key(id)
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}
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2024-07-02 20:55:51 +00:00
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/// Enroll a new device
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pub fn enroll(
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&mut self,
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id: &DeviceId,
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info: &DeviceInfo,
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csr: &X509Req,
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) -> anyhow::Result<()> {
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if self.exists(id) {
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return Err(DevicesListError::EnrollFailedDeviceAlreadyExists.into());
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}
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let device = Device {
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id: id.clone(),
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info: info.clone(),
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time_create: time_secs(),
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time_update: time_secs(),
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name: id.0.to_string(),
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description: "".to_string(),
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validated: false,
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enabled: false,
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relays: vec![],
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};
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// First, write CSR
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std::fs::write(AppConfig::get().device_csr_path(id), csr.to_pem()?)?;
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self.0.insert(id.clone(), device);
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self.persist_dev_config(id)?;
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Ok(())
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}
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/// Persist a device configuration on the filesystem
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fn persist_dev_config(&self, id: &DeviceId) -> anyhow::Result<()> {
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let dev = self
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.0
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.get(id)
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.ok_or_else(|| DevicesListError::PersistFailedDeviceNotFound)?;
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std::fs::write(
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AppConfig::get().device_config_path(id),
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serde_json::to_string_pretty(dev)?,
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)?;
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Ok(())
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}
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2024-07-01 19:10:45 +00:00
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}
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