Better error handling in cert generation

Now it should correctly free all resources in case
of failure. 

1 files changed, 47 insertions, 0 deletions

diff --git a/src/asn1/mod.rs b/src/asn1/mod.rs
index e69de29b..2cd4584f 100644
--- a/src/asn1/mod.rs
+++ b/src/asn1/mod.rs
@@ -0,0 +1,47 @@
+use libc::{c_long};
+use std::ptr;
+
+use ffi;
+use ssl::error::{SslError};
+
+
+pub struct Asn1Time {
+    handle: *mut ffi::ASN1_TIME,
+    owned: bool
+}
+
+impl Asn1Time {
+    /// Wraps existing ASN1_TIME and takes ownership
+    pub fn new(handle: *mut ffi::ASN1_TIME) -> Asn1Time {
+        Asn1Time {
+            handle: handle,
+            owned: true
+        }
+    }
+
+    fn new_with_period(period: u64) -> Result<Asn1Time, SslError> {
+        let handle = unsafe {
+            try_ssl_null!(ffi::X509_gmtime_adj(ptr::null_mut(),
+                                               period as c_long))
+        };
+        Ok(Asn1Time::new(handle))
+    }
+
+    /// Creates a new time on specified interval in days from now
+    pub fn days_from_now(days: uint) -> Result<Asn1Time, SslError> {
+        Asn1Time::new_with_period(days as u64 * 60 * 60 * 24)
+    }
+
+    /// Returns raw handle
+    pub unsafe fn get_handle(&self) -> *mut ffi::ASN1_TIME {
+        return self.handle
+    }
+}
+
+impl Drop for Asn1Time {
+    fn drop(&mut self) {
+        if self.owned {
+            unsafe { ffi::ASN1_TIME_free(self.handle) };
+        }
+    }
+}