Add options support for setting and getting HMAC algorithms

BUG: https://red.libssh.org/issues/91

Reviewed-by: Andreas Schneider <asn@cryptomilk.org>

1 files changed, 31 insertions, 1 deletions

diff --git a/src/session.c b/src/session.c
index 204adad6..3a0a90d4 100644
--- a/src/session.c
+++ b/src/session.c
@@ -311,7 +311,7 @@ const char* ssh_get_serverbanner(ssh_session session) {
 }
 
 /**
- * @brief get the name of the input for the given session.
+ * @brief get the name of the input cipher for the given session.
  *
  * @param[in] session The SSH session.
  *
@@ -343,6 +343,36 @@ const char* ssh_get_cipher_out(ssh_session session) {
 }
 
 /**
+ * @brief get the name of the input HMAC algorithm for the given session.
+ *
+ * @param[in] session The SSH session.
+ *
+ * @return Returns HMAC algorithm name or NULL if unknown.
+ */
+const char* ssh_get_hmac_in(ssh_session session) {
+    if ((session != NULL) &&
+        (session->current_crypto != NULL)) {
+        return ssh_hmac_type_to_string(session->current_crypto->in_hmac);
+    }
+    return NULL;
+}
+
+/**
+ * @brief get the name of the output HMAC algorithm for the given session.
+ *
+ * @param[in] session The SSH session.
+ *
+ * @return Returns HMAC algorithm name or NULL if unknown.
+ */
+const char* ssh_get_hmac_out(ssh_session session) {
+    if ((session != NULL) &&
+        (session->current_crypto != NULL)) {
+        return ssh_hmac_type_to_string(session->current_crypto->out_hmac);
+    }
+    return NULL;
+}
+
+/**
  * @brief Disconnect impolitely from a remote host by closing the socket.
  *
  * Suitable if you forked and want to destroy this session.