cred: introduce username-only cred

This exists as ssh needs to know about the username to use before it can
query for the supported authentication methods.

1 files changed, 14 insertions, 0 deletions

diff --git a/include/git2/transport.h b/include/git2/transport.h
index af7812b5d..d1322a10b 100644
--- a/include/git2/transport.h
+++ b/include/git2/transport.h
@@ -44,6 +44,14 @@ typedef enum {
 
 	/* git_cred_ssh_interactive */
 	GIT_CREDTYPE_SSH_INTERACTIVE = (1u << 4),
+
+	/**
+	 * Username-only information
+	 *
+	 * If the SSH transport does not know which username to use,
+	 * it will ask via this credential type.
+	 */
+	GIT_CREDTYPE_USERNAME = (1u << 5),
 } git_credtype_t;
 
 /* The base structure for all credential types */
@@ -105,6 +113,12 @@ typedef struct git_cred_ssh_custom {
 /** A key for NTLM/Kerberos "default" credentials */
 typedef struct git_cred git_cred_default;
 
+/** Username-only credential information */
+typedef struct git_cred_username {
+	git_cred parent;
+	char username[1];
+} git_cred_username;
+
 /**
  * Check whether a credential object contains username information.
  *