feat(php-shim): implement gethostbyname() and inet_pton()

1 files changed, 22 insertions, 4 deletions

diff --git a/crates/shirabe-php-shim/src/net.rs b/crates/shirabe-php-shim/src/net.rs
index e7ecb18..0ecf5cb 100644
--- a/crates/shirabe-php-shim/src/net.rs
+++ b/crates/shirabe-php-shim/src/net.rs
@@ -1,13 +1,31 @@
+use std::net::{IpAddr, SocketAddr, ToSocketAddrs};
+
 pub fn gethostname() -> String {
     todo!()
 }
 
-pub fn gethostbyname(_hostname: &str) -> String {
-    todo!()
+// Resolves the first IPv4 address for the host name, mirroring PHP's gethostbyname
+// which only ever yields an IPv4 record and returns the unmodified host name on
+// failure.
+pub fn gethostbyname(hostname: &str) -> String {
+    match (hostname, 0u16).to_socket_addrs() {
+        Ok(addrs) => addrs
+            .filter_map(|addr| match addr {
+                SocketAddr::V4(v4) => Some(v4.ip().to_string()),
+                SocketAddr::V6(_) => None,
+            })
+            .next()
+            .unwrap_or_else(|| hostname.to_string()),
+        Err(_) => hostname.to_string(),
+    }
 }
 
-pub fn inet_pton(_host: &str) -> Option<Vec<u8>> {
-    todo!()
+pub fn inet_pton(host: &str) -> Option<Vec<u8>> {
+    match host.parse::<IpAddr>() {
+        Ok(IpAddr::V4(v4)) => Some(v4.octets().to_vec()),
+        Ok(IpAddr::V6(v6)) => Some(v6.octets().to_vec()),
+        Err(_) => None,
+    }
 }
 
 pub fn http_get_last_response_headers() -> Option<Vec<String>> {