make spawn function accept slice of &str instead of generics so joining into string for logging is easy

src/dl/ffmpeg.rs

@@ -22,7 +22,7 @@ impl FFMpeg {
         let bitrate = format!("{}k", bitrate);
         let output = spawn(
             "ffmpeg",
-            [
+            &[
                 "-i",
                 input_path,
                 "-codec:a",

src/dl/spawn.rs

@@ -1,8 +1,8 @@
 use core::fmt;
-use std::ffi::OsStr;
 use std::process::Output;
 use std::str::Utf8Error;
 use tokio::process::Command;
+use tracing::{event, Level};
 
 #[derive(Debug)]
 pub enum SpawnError {
@@ -36,11 +36,13 @@ impl fmt::Display for SpawnError {
 
 /* !!! The argument list could be exploited in a way to inject malicious arguments !!!
 !!! and alter the way program executes and/or gain access to system             !!! */
-pub async fn spawn<I, S>(program: &str, args: I) -> Result<Output, SpawnError>
-where
-    I: IntoIterator<Item = S>,
-    S: AsRef<OsStr>,
+pub async fn spawn(program: &str, args: &[&str]) -> Result<Output, SpawnError>
 {
+    {
+        let cmd_args = args.join(" ");
+        event!(Level::INFO, "{} {}", program, cmd_args);
+    }
+
     let output = Command::new(program).args(args).output().await?;
 
     if !output.status.success() {

src/dl/yt_dlp.rs

@@ -170,7 +170,7 @@ pub struct YtDlp {}
 // BUG: REAL ARGUMENT INJECTION! FIX ASAP
 impl YtDlp {
     pub async fn load_info(url: &str) -> Result<YtDlpInfo, YtDlpError> {
-        let output = spawn("python", ["-m", "yt_dlp", url, "-j"]).await?;
+        let output = spawn("python", &["-m", "yt_dlp", url, "-j"]).await?;
 
         Ok(YtDlpInfo::parse(&output.stdout)?)
     }
@@ -178,7 +178,7 @@ impl YtDlp {
     pub async fn download(url: &str, format_id: &str, output_path: &str) -> Result<(), YtDlpError> {
         spawn(
             "python",
-            [
+            &[
                 "-m",
                 "yt_dlp",
                 url,