Move temp directory creation to locator

Cargo.lock

@@ -2030,6 +2030,7 @@ dependencies = [
  "log",
  "native-tls",
  "normpath",
+ "rand",
  "regex",
  "semver",
  "serde",

samples/RustIced/Cargo.lock

@@ -3678,6 +3678,7 @@ dependencies = [
  "log",
  "native-tls",
  "normpath",
+ "rand",
  "regex",
  "semver",
  "serde",

src/bins/src/commands/apply_windows_impl.rs

@@ -57,10 +57,9 @@ pub fn apply_package_impl(old_locator: &VelopackLocator, package: &PathBuf, run_
         bail!("Stopping apply. Pre-requisites are missing and user cancelled.");
     }
 
-    let packages_dir = old_locator.get_packages_dir();
     let current_dir = old_locator.get_current_bin_dir();
-    let temp_path_new = packages_dir.join(format!("tmp_{}", shared::random_string(16)));
-    let temp_path_old = packages_dir.join(format!("tmp_{}", shared::random_string(16)));
+    let temp_path_new = old_locator.get_temp_dir_rand16()?;
+    let temp_path_old = old_locator.get_temp_dir_rand16()?;
 
     // open a dialog showing progress...
     let (mut tx, _) = mpsc::channel::<i16>();

src/bins/src/commands/install.rs

@@ -101,7 +101,7 @@ pub fn install(pkg: &mut BundleZip, install_to: Option<&PathBuf>, start_args: Op
             anyhow!("Failed to stop application ({}), please close the application and try running the installer again.", z)
         })?;
 
-        root_path_renamed = format!("{}_{}", root_path_str, shared::random_string(8));
+        root_path_renamed = format!("{}_{}", root_path_str, shared::random_string(16));
         info!("Renaming existing directory to '{}' to allow rollback...", root_path_renamed);
 
         shared::retry_io(|| fs::rename(&root_path, &root_path_renamed)).map_err(|_| {

src/lib-nodejs/crates/velopack_nodeffi/src/lib.rs

@@ -221,10 +221,11 @@ fn js_appbuilder_run(mut cx: FunctionContext) -> JsResult<JsUndefined> {
 
     #[cfg(target_os = "windows")]
     {
-        builder.on_after_install_fast_callback(|semver| hook_handler("after-install", semver));
-        builder.on_before_uninstall_fast_callback(|semver| hook_handler("before-uninstall", semver));
-        builder.on_before_update_fast_callback(|semver| hook_handler("before-update", semver));
-        builder.on_after_update_fast_callback(|semver| hook_handler("after-update", semver));
+        builder = builder
+            .on_after_install_fast_callback(|semver| hook_handler("after-install", semver))
+            .on_before_uninstall_fast_callback(|semver| hook_handler("before-uninstall", semver))
+            .on_before_update_fast_callback(|semver| hook_handler("before-update", semver))
+            .on_after_update_fast_callback(|semver| hook_handler("after-update", semver));
     }
 
     if let Some(locator) = locator {

src/lib-rust/Cargo.toml

@@ -36,6 +36,7 @@ lazy_static = "1.5"
 regex = "1.10"
 normpath = "1.3"
 bitflags = "2.6"
+rand = "0.8"
 
 # typescript
 ts-rs = { version = "10.0", optional = true }

src/lib-rust/src/bindetect.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 use std::fs::File;
 use std::io::{self, Read};
 use std::path::Path;

src/lib-rust/src/locator.rs

@@ -145,13 +145,20 @@ impl VelopackLocator {
     }
 
     /// Returns the path to the current app temporary directory.
-    pub fn get_temp_dir(&self) -> PathBuf {
+    pub fn get_temp_dir_root(&self) -> PathBuf {
         self.paths.PackagesDir.join("VelopackTemp")
     }
+    
+    /// Creates a new temporary directory inside get_temp_dir_root() with a random 16-character suffix.
+    pub fn get_temp_dir_rand16(&self) -> Result<PathBuf, Error> {
+        let p = self.get_temp_dir_root().join("tmp_".to_string() + &util::random_string(16));
+        std::fs::create_dir_all(&p)?;
+        Ok(p)
+    }
 
     /// Returns the path to the current app temporary directory as a string.
     pub fn get_temp_dir_as_string(&self) -> String {
-        Self::path_as_string(&self.get_temp_dir())
+        Self::path_as_string(&self.get_temp_dir_root())
     }
 
     /// Returns the root directory of the current app.
@@ -289,7 +296,7 @@ impl VelopackLocator {
 /// Create a paths object containing default / ideal paths for a given root directory
 /// Generally, this should not be used except for installing the app for the first time.
 #[cfg(target_os = "windows")]
-pub fn create_config_from_root_dir<P: AsRef<Path>>(root_dir: P) -> VelopackLocatorConfig
+pub fn create_config_from_root_dir<P: AsRef<std::path::Path>>(root_dir: P) -> VelopackLocatorConfig
 {
     let root_dir = root_dir.as_ref();
     VelopackLocatorConfig {

src/lib-rust/src/util.rs

@@ -1,5 +1,6 @@
 use std::thread;
 use std::time::Duration;
+use rand::distributions::{Alphanumeric, DistString};
 
 pub fn retry_io<F, T, E>(op: F) -> Result<T, E>
 where
@@ -31,4 +32,8 @@ where
     thread::sleep(Duration::from_millis(1000));
 
     op()
+}
+
+pub fn random_string(len: usize) -> String {
+    Alphanumeric.sample_string(&mut rand::thread_rng(), len)
 }