1 files changed, 39 insertions, 0 deletions
diff --git a/openssl/src/x509/extension.rs b/openssl/src/x509/extension.rs
index 88cb64a2..c0b3bad4 100644
--- a/openssl/src/x509/extension.rs
+++ b/openssl/src/x509/extension.rs
@@ -1,4 +1,9 @@
 use std::fmt;
+use std::marker::PhantomData;
+use std::slice;
+use std::str;
+use ffi;
+
 use nid::Nid;
 
 /// Type-only version of the `Extension` enum.
@@ -218,3 +223,37 @@ impl fmt::Display for AltNameOption {
         })
     }
 }
+
+pub struct GeneralName<'a> {
+    name: *const ffi::GENERAL_NAME,
+    m: PhantomData<&'a ()>,
+}
+
+impl<'a> GeneralName<'a> {
+    pub fn dns(&self) -> Option<&str> {
+        unsafe {
+            if (*self.name).type_ != ffi::GEN_DNS {
+                return None;
+            }
+
+            let ptr = ffi::ASN1_STRING_data((*self.name).d as *mut _);
+            let len = ffi::ASN1_STRING_length((*self.name).d as *mut _);
+
+            let slice = slice::from_raw_parts(ptr as *const u8, len as usize);
+            Some(str::from_utf8_unchecked(slice))
+        }
+    }
+
+    pub fn ipadd(&self) -> Option<&[u8]> {
+        unsafe {
+            if (*self.name).type_ != ffi::GEN_IPADD {
+                return None;
+            }
+
+            let ptr = ffi::ASN1_STRING_data((*self.name).d as *mut _);
+            let len = ffi::ASN1_STRING_length((*self.name).d as *mut _);
+
+            Some(slice::from_raw_parts(ptr as *const u8, len as usize))
+        }
+    }
+}