feat(client): add windows system proxies for Matcher (#190)

Author: seanmonstar

Cargo.toml

@@ -48,6 +48,9 @@ pnet_datalink = "0.35.0"
 [target.'cfg(target_os = "macos")'.dependencies]
 system-configuration = { version = "0.6.1", optional = true }
 
+[target.'cfg(windows)'.dependencies]
+windows-registry = { version = "0.4", optional = true }
+
 [features]
 default = []
 
@@ -68,7 +71,7 @@ full = [
 client = ["hyper/client", "dep:tracing", "dep:futures-channel", "dep:tower-service"]
 client-legacy = ["client", "dep:socket2", "tokio/sync", "dep:libc"]
 client-proxy = ["client", "dep:base64", "dep:ipnet", "dep:percent-encoding"]
-client-proxy-system = ["dep:system-configuration"]
+client-proxy-system = ["dep:system-configuration", "dep:windows-registry"]
 
 server = ["hyper/server"]
 server-auto = ["server", "http1", "http2"]

src/client/proxy/matcher.rs

@@ -242,6 +242,9 @@ impl Builder {
         #[cfg(all(feature = "client-proxy-system", target_os = "macos"))]
         mac::with_system(&mut builder);
 
+        #[cfg(all(feature = "client-proxy-system", windows))]
+        win::with_system(&mut builder);
+
         builder
     }
 
@@ -638,6 +641,41 @@ mod mac {
     }
 }
 
+#[cfg(feature = "client-proxy-system")]
+#[cfg(windows)]
+mod win {
+    pub(super) fn with_system(builder: &mut super::Builder) {
+        let settings = if let Ok(settings) = windows_registry::CURRENT_USER
+            .open("Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings")
+        {
+            settings
+        } else {
+            return;
+        };
+
+        if settings.get_u32("ProxyEnable").unwrap_or(0) == 0 {
+            return;
+        }
+
+        if builder.http.is_empty() {
+            if let Ok(val) = settings.get_string("ProxyServer") {
+                builder.http = val;
+            }
+        }
+
+        if builder.no.is_empty() {
+            if let Ok(val) = settings.get_string("ProxyOverride") {
+                builder.no = val
+                    .split(';')
+                    .map(|s| s.trim())
+                    .collect::<Vec<&str>>()
+                    .join(",")
+                    .replace("*.", "");
+            }
+        }
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;