Fix build script on Windows

build.rs

@@ -1,54 +1,50 @@
 fn main() {
     #[cfg(target_os = "windows")]
-    download_winpcap_sdk()
+    download_windows_pcap_sdk()
 }
 
 #[cfg(target_os = "windows")]
-fn download_winpcap_sdk() {
+fn download_windows_pcap_sdk() {
+    use std::{
+        env, fs,
+        io::{self, Write},
+    };
+
     use http_req::request;
-    use std::env;
-    use std::fs::File;
-    use std::io::prelude::*;
+    use zip::ZipArchive;
 
     println!("cargo:rerun-if-changed=build.rs");
 
     let out_dir = env::var("OUT_DIR").unwrap();
 
-    let mut reader = Vec::new();
-    let _res = request::get(
-        "https://nmap.org/npcap/dist/npcap-sdk-1.05.zip",
-        &mut reader,
-    )
-    .unwrap();
-
-    let mut pcapzip = File::create(format!("{}{}", out_dir, "/npcap.zip")).unwrap();
-    pcapzip.write_all(reader.as_slice()).unwrap();
-    pcapzip.flush().unwrap();
-
-    pcapzip = File::open(format!("{}{}", out_dir, "/npcap.zip")).unwrap();
+    let mut pcap_zip = Vec::new();
+    let res = request::get("https://npcap.com/dist/npcap-sdk-1.13.zip", &mut pcap_zip).unwrap();
+    eprintln!("{:?}", res);
 
+    let lib_dir = if cfg!(target_arch = "aarch64") {
+        "Lib/ARM64"
+    } else if cfg!(target_arch = "x86_64") {
+        "Lib/x64"
+    } else if cfg!(target_arch = "x86") {
+        "Lib"
+    } else {
+        panic!("Unsupported target!")
+    };
     let lib_name = "Packet.lib";
-    #[cfg(target_arch = "x86_64")]
-    let lib_dir = "Lib/x64";
-    #[cfg(target_arch = "x86")]
-    let lib_dir = "Lib";
-
     let lib_path = format!("{}/{}", lib_dir, lib_name);
-    let mut zip_archive = zip::ZipArchive::new(pcapzip).unwrap();
-    let mut pcaplib = match zip_archive.by_name(lib_path.as_str()) {
-        Ok(pcaplib) => pcaplib,
+
+    let mut archive = ZipArchive::new(io::Cursor::new(pcap_zip)).unwrap();
+    let mut pcap_lib = match archive.by_name(&lib_path) {
+        Ok(lib) => lib,
         Err(err) => {
             panic!("{}", err);
         }
     };
 
-    let mut pcaplib_bytes = Vec::new();
-    pcaplib.read_to_end(&mut pcaplib_bytes).unwrap();
-
-    std::fs::create_dir_all(format!("{}/{}", out_dir, lib_dir)).unwrap();
-    let mut pcaplib_file = File::create(format!("{}/{}", out_dir, lib_path)).unwrap();
-    pcaplib_file.write_all(pcaplib_bytes.as_slice()).unwrap();
-    pcaplib_file.flush().unwrap();
+    fs::create_dir_all(format!("{}/{}", out_dir, lib_dir)).unwrap();
+    let mut pcap_lib_file = fs::File::create(format!("{}/{}", out_dir, lib_path)).unwrap();
+    io::copy(&mut pcap_lib, &mut pcap_lib_file).unwrap();
+    pcap_lib_file.flush().unwrap();
 
     println!("cargo:rustc-link-search=native={}/{}", out_dir, lib_dir);
 }