1 files changed, 68 insertions, 0 deletions
diff --git a/src/libgit2/transports/credential_helpers.c b/src/libgit2/transports/credential_helpers.c
new file mode 100644
index 000000000..6d34a4e97
--- /dev/null
+++ b/src/libgit2/transports/credential_helpers.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#include "common.h"
+
+#include "git2/credential_helpers.h"
+
+int git_credential_userpass(
+		git_credential **cred,
+		const char *url,
+		const char *user_from_url,
+		unsigned int allowed_types,
+		void *payload)
+{
+	git_credential_userpass_payload *userpass = (git_credential_userpass_payload*)payload;
+	const char *effective_username = NULL;
+
+	GIT_UNUSED(url);
+
+	if (!userpass || !userpass->password) return -1;
+
+	/* Username resolution: a username can be passed with the URL, the
+	 * credentials payload, or both. Here's what we do.  Note that if we get
+	 * this far, we know that any password the url may contain has already
+	 * failed at least once, so we ignore it.
+	 *
+	 * |  Payload    |   URL    |   Used    |
+	 * +-------------+----------+-----------+
+	 * |    yes      |   no     |  payload  |
+	 * |    yes      |   yes    |  payload  |
+	 * |    no       |   yes    |  url      |
+	 * |    no       |   no     |  FAIL     |
+	 */
+	if (userpass->username)
+		effective_username = userpass->username;
+	else if (user_from_url)
+		effective_username = user_from_url;
+	else
+		return -1;
+
+	if (GIT_CREDENTIAL_USERNAME & allowed_types)
+		return git_credential_username_new(cred, effective_username);
+
+	if ((GIT_CREDENTIAL_USERPASS_PLAINTEXT & allowed_types) == 0 ||
+			git_credential_userpass_plaintext_new(cred, effective_username, userpass->password) < 0)
+		return -1;
+
+	return 0;
+}
+
+/* Deprecated credential functions */
+
+#ifndef GIT_DEPRECATE_HARD
+int git_cred_userpass(
+	git_credential **out,
+	const char *url,
+	const char *user_from_url,
+	unsigned int allowed_types,
+	void *payload)
+{
+	return git_credential_userpass(out, url, user_from_url,
+		allowed_types, payload);
+}
+#endif