chore(gui-client/linux): export all logs, not just app logs (#4830)

17ac1ebe79 looks good on both Linux and Windows

```[tasklist]
### Before merging
- [x] Allow GUI to delete IPC service logs
- [x] Test Linux
- [x] Test Windows
```

rust/gui-client/src-tauri/deb_files/firezone-client-ipc.service

@@ -7,6 +7,8 @@ CapabilityBoundingSet=CAP_CHOWN CAP_NET_ADMIN
 DeviceAllow=/dev/net/tun
 LockPersonality=true
 LogsDirectory=dev.firezone.client
+# Allow users in `firezone` group to delete log files
+LogsDirectoryMode=775
 MemoryDenyWriteExecute=true
 NoNewPrivileges=true
 PrivateMounts=true

rust/gui-client/src-tauri/src/client/gui.rs

@@ -65,20 +65,6 @@ pub(crate) struct Managed {
     pub inject_faults: bool,
 }
 
-impl Managed {
-    #[cfg(debug_assertions)]
-    /// In debug mode, if `--inject-faults` is passed, sleep for `millis` milliseconds
-    pub async fn fault_msleep(&self, millis: u64) {
-        if self.inject_faults {
-            tokio::time::sleep(std::time::Duration::from_millis(millis)).await;
-        }
-    }
-
-    #[cfg(not(debug_assertions))]
-    /// Does nothing in release mode
-    pub async fn fault_msleep(&self, _millis: u64) {}
-}
-
 // TODO: Replace with `anyhow` gradually per <https://github.com/firezone/firezone/pull/3546#discussion_r1477114789>
 #[allow(dead_code)]
 #[derive(Debug, thiserror::Error)]
@@ -373,6 +359,10 @@ async fn smoke_test(ctlr_tx: CtlrTx) -> Result<()> {
         })
         .await
         .context("Failed to send ExportLogs request")?;
+    ctlr_tx
+        .send(ControllerRequest::ClearLogs)
+        .await
+        .context("Failed to send ClearLogs request")?;
 
     // Give the app some time to export the zip and reach steady state
     tokio::time::sleep_until(quit_time).await;
@@ -467,6 +457,8 @@ fn handle_system_tray_event(app: &tauri::AppHandle, event: TrayMenuEvent) -> Res
 pub(crate) enum ControllerRequest {
     /// The GUI wants us to use these settings in-memory, they've already been saved to disk
     ApplySettings(AdvancedSettings),
+    /// Only used for smoke tests
+    ClearLogs,
     Disconnected,
     /// The same as the arguments to `client::logging::export_logs_to`
     ExportLogs {
@@ -588,6 +580,9 @@ impl Controller {
                     "Applied new settings. Log level will take effect at next app start."
                 );
             }
+            Req::ClearLogs => logging::clear_logs_inner()
+                .await
+                .context("Failed to clear logs")?,
             Req::Disconnected => {
                 tracing::info!("Disconnected by connlib");
                 self.sign_out().await?;

rust/gui-client/src-tauri/src/client/logging.rs

@@ -7,7 +7,12 @@ use crate::client::{
 use anyhow::{bail, Context, Result};
 use connlib_client_shared::file_logger;
 use serde::Serialize;
-use std::{fs, io, path::PathBuf, result::Result as StdResult, str::FromStr};
+use std::{
+    fs, io,
+    path::{Path, PathBuf},
+    result::Result as StdResult,
+    str::FromStr,
+};
 use tokio::task::spawn_blocking;
 use tracing::subscriber::set_global_default;
 use tracing_log::LogTracer;
@@ -21,10 +26,19 @@ pub(crate) struct Handles {
     pub _reloader: reload::Handle<EnvFilter, Registry>,
 }
 
+struct LogPath {
+    /// Where to find the logs on disk
+    ///
+    /// e.g. `/var/log/dev.firezone.client`
+    src: PathBuf,
+    /// Where to store the logs in the zip
+    ///
+    /// e.g. `connlib`
+    dst: PathBuf,
+}
+
 #[derive(Debug, thiserror::Error)]
 pub(crate) enum Error {
-    #[error("Couldn't compute our local AppData path")]
-    CantFindLocalAppDataFolder,
     #[error("Couldn't create logs dir: {0}")]
     CreateDirAll(std::io::Error),
     #[error("Log filter couldn't be parsed")]
@@ -36,8 +50,8 @@ pub(crate) enum Error {
 }
 
 /// Set up logs after the process has started
-pub(crate) fn setup(log_filter: &str) -> Result<Handles, Error> {
-    let log_path = log_path()?;
+pub(crate) fn setup(log_filter: &str) -> Result<Handles> {
+    let log_path = app_log_path()?.src;
 
     std::fs::create_dir_all(&log_path).map_err(Error::CreateDirAll)?;
     let (layer, logger) = file_logger::layer(&log_path);
@@ -73,8 +87,8 @@ pub(crate) fn debug_command_setup() -> Result<(), Error> {
 }
 
 #[tauri::command]
-pub(crate) async fn clear_logs(managed: tauri::State<'_, Managed>) -> StdResult<(), String> {
-    clear_logs_inner(&managed).await.map_err(|e| e.to_string())
+pub(crate) async fn clear_logs() -> StdResult<(), String> {
+    clear_logs_inner().await.map_err(|e| e.to_string())
 }
 
 #[tauri::command]
@@ -97,13 +111,14 @@ pub(crate) async fn count_logs() -> StdResult<FileCount, String> {
 ///
 /// This includes the current log file, so we won't write any more logs to disk
 /// until the file rolls over or the app restarts.
-pub(crate) async fn clear_logs_inner(managed: &Managed) -> Result<()> {
-    let mut dir = tokio::fs::read_dir(log_path()?).await?;
-    while let Some(entry) = dir.next_entry().await? {
-        tokio::fs::remove_file(entry.path()).await?;
+pub(crate) async fn clear_logs_inner() -> Result<()> {
+    for log_path in log_paths()?.into_iter().map(|x| x.src) {
+        let mut dir = tokio::fs::read_dir(log_path).await?;
+        while let Some(entry) = dir.next_entry().await? {
+            tokio::fs::remove_file(entry.path()).await?;
+        }
     }
 
-    managed.fault_msleep(5000).await;
     Ok(())
 }
 
@@ -111,7 +126,7 @@ pub(crate) async fn clear_logs_inner(managed: &Managed) -> Result<()> {
 pub(crate) fn export_logs_inner(ctlr_tx: CtlrTx) -> Result<()> {
     let now = chrono::Local::now();
     let datetime_string = now.format("%Y_%m_%d-%H-%M");
-    let stem = PathBuf::from(format!("connlib-{datetime_string}"));
+    let stem = PathBuf::from(format!("firezone_logs_{datetime_string}"));
     let filename = stem.with_extension("zip");
     let Some(filename) = filename.to_str() else {
         bail!("zip filename isn't valid Unicode");
@@ -145,30 +160,58 @@ pub(crate) async fn export_logs_to(path: PathBuf, stem: PathBuf) -> Result<()> {
     spawn_blocking(move || {
         let f = fs::File::create(path).context("Failed to create zip file")?;
         let mut zip = zip::ZipWriter::new(f);
-        // All files will have the same modified time. Doing otherwise seems to be difficult
-        let options = zip::write::FileOptions::default();
-        let log_path = log_path().context("Failed to compute log dir path")?;
-        for entry in fs::read_dir(log_path).context("Failed to `read_dir` log dir")? {
-            let entry = entry.context("Got bad entry from `read_dir`")?;
-            let Some(path) = stem.join(entry.file_name()).to_str().map(|x| x.to_owned()) else {
-                bail!("log filename isn't valid Unicode")
-            };
-            zip.start_file(path, options)
-                .context("`ZipWriter::start_file` failed")?;
-            let mut f = fs::File::open(entry.path()).context("Failed to open log file")?;
-            io::copy(&mut f, &mut zip).context("Failed to copy log file into zip")?;
+        for log_path in log_paths().context("Can't compute log paths")? {
+            add_dir_to_zip(&mut zip, &log_path.src, &stem.join(log_path.dst))?;
         }
         zip.finish().context("Failed to finish zip file")?;
-        Ok(())
+        Ok::<_, anyhow::Error>(())
     })
     .await
     .context("Failed to join zip export task")??;
     Ok(())
 }
 
+/// Reads all files in a directory and adds them to a zip file
+///
+/// Does not recurse.
+/// All files will have the same modified time. Doing otherwise seems to be difficult
+fn add_dir_to_zip(
+    zip: &mut zip::ZipWriter<std::fs::File>,
+    src_dir: &Path,
+    dst_stem: &Path,
+) -> Result<()> {
+    let options = zip::write::FileOptions::default();
+    for entry in fs::read_dir(src_dir).context("Failed to `read_dir` log dir")? {
+        let entry = entry.context("Got bad entry from `read_dir`")?;
+        let Some(path) = dst_stem
+            .join(entry.file_name())
+            .to_str()
+            .map(|x| x.to_owned())
+        else {
+            bail!("log filename isn't valid Unicode")
+        };
+        zip.start_file(path, options)
+            .context("`ZipWriter::start_file` failed")?;
+        let mut f = fs::File::open(entry.path()).context("Failed to open log file")?;
+        io::copy(&mut f, zip).context("Failed to copy log file into zip")?;
+    }
+    Ok(())
+}
+
 /// Count log files and their sizes
 pub(crate) async fn count_logs_inner() -> Result<FileCount> {
-    let mut dir = tokio::fs::read_dir(log_path()?).await?;
+    // I spent about 5 minutes on this and couldn't get it to work with `Stream`
+    let mut total_count = FileCount::default();
+    for log_path in log_paths()? {
+        let count = count_one_dir(&log_path.src).await?;
+        total_count.files += count.files;
+        total_count.bytes += count.bytes;
+    }
+    Ok(total_count)
+}
+
+async fn count_one_dir(path: &Path) -> Result<FileCount> {
+    let mut dir = tokio::fs::read_dir(path).await?;
     let mut file_count = FileCount::default();
 
     while let Some(entry) = dir.next_entry().await? {
@@ -180,7 +223,34 @@ pub(crate) async fn count_logs_inner() -> Result<FileCount> {
     Ok(file_count)
 }
 
-/// Wrapper around `known_dirs::logs`
-pub(crate) fn log_path() -> Result<PathBuf, Error> {
-    known_dirs::logs().ok_or(Error::CantFindLocalAppDataFolder)
+#[cfg(target_os = "linux")]
+fn log_paths() -> Result<Vec<LogPath>> {
+    Ok(vec![
+        LogPath {
+            // TODO: This is magic, it must match the systemd file
+            src: PathBuf::from("/var/log").join(connlib_shared::BUNDLE_ID),
+            dst: PathBuf::from("connlib"),
+        },
+        app_log_path()?,
+    ])
+}
+
+/// Windows doesn't have separate connlib logs until #3712 merges
+#[cfg(not(target_os = "linux"))]
+fn log_paths() -> Result<Vec<LogPath>> {
+    Ok(vec![app_log_path()?])
+}
+
+/// Log dir for just the GUI app
+///
+/// e.g. `$HOME/.cache/dev.firezone.client/data/logs`
+/// or `%LOCALAPPDATA%/dev.firezone.client/data/logs`
+///
+/// On Windows this also happens to contain the connlib logs,
+/// until #3712 merges
+fn app_log_path() -> Result<LogPath> {
+    Ok(LogPath {
+        src: known_dirs::logs().context("Can't compute app log dir")?,
+        dst: PathBuf::from("app"),
+    })
 }

rust/gui-client/src/settings.ts

@@ -154,7 +154,7 @@ async function clearLogs() {
       console.error(e);
     })
     .finally(() => {
-      logCountOutput.innerText = "0 files, 0 MB";
+      countLogs();
       unlockLogsForm();
     });
 }