Bind the SSH2 Agent

1 files changed, 41 insertions, 2 deletions

diff --git a/src/error.rs b/src/error.rs
index e3ea407..ae1f6c7 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -1,2 +1,41 @@
-#[deriving(Show)]
-pub struct Error(pub int);
+use std::fmt;
+use std::kinds::marker;
+use std::str;
+use libc;
+
+use {raw, Session};
+
+/// Representation of an error that can occur within libssh2
+pub struct Error {
+    code: libc::c_int,
+    msg: &'static str,
+    marker: marker::NoCopy,
+}
+
+impl Error {
+    /// Generate the last error that occurred for a `Session`.
+    ///
+    /// Returns `None` if there was no last error.
+    pub fn last_error(sess: &Session) -> Option<Error> {
+        unsafe {
+            let mut msg = 0 as *mut _;
+            let rc = raw::libssh2_session_last_error(sess.raw(), &mut msg,
+                                                     0 as *mut _, 0);
+            if rc == 0 { return None }
+            Some(Error {
+                code: rc,
+                msg: str::raw::c_str_to_static_slice(msg as *const _),
+                marker: marker::NoCopy,
+            })
+        }
+    }
+
+    /// Get the message corresponding to this error
+    pub fn message(&self) -> &str { self.msg }
+}
+
+impl fmt::Show for Error {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "[{}] {}", self.code, self.msg)
+    }
+}