1 files changed, 74 insertions, 0 deletions
diff --git a/src/libgit2/transports/auth.c b/src/libgit2/transports/auth.c
new file mode 100644
index 000000000..90b6b124f
--- /dev/null
+++ b/src/libgit2/transports/auth.c
@@ -0,0 +1,74 @@
+/*
+ * 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 "auth.h"
+
+#include "git2/sys/credential.h"
+
+static int basic_next_token(
+	git_str *out,
+	git_http_auth_context *ctx,
+	git_credential *c)
+{
+	git_credential_userpass_plaintext *cred;
+	git_str raw = GIT_STR_INIT;
+	int error = GIT_EAUTH;
+
+	GIT_UNUSED(ctx);
+
+	if (c->credtype != GIT_CREDENTIAL_USERPASS_PLAINTEXT) {
+		git_error_set(GIT_ERROR_INVALID, "invalid credential type for basic auth");
+		goto on_error;
+	}
+
+	cred = (git_credential_userpass_plaintext *)c;
+
+	git_str_printf(&raw, "%s:%s", cred->username, cred->password);
+
+	if (git_str_oom(&raw) ||
+		git_str_puts(out, "Basic ") < 0 ||
+		git_str_encode_base64(out, git_str_cstr(&raw), raw.size) < 0)
+		goto on_error;
+
+	error = 0;
+
+on_error:
+	if (raw.size)
+		git__memzero(raw.ptr, raw.size);
+
+	git_str_dispose(&raw);
+	return error;
+}
+
+static git_http_auth_context basic_context = {
+	GIT_HTTP_AUTH_BASIC,
+	GIT_CREDENTIAL_USERPASS_PLAINTEXT,
+	0,
+	NULL,
+	basic_next_token,
+	NULL,
+	NULL
+};
+
+int git_http_auth_basic(
+	git_http_auth_context **out, const git_net_url *url)
+{
+	GIT_UNUSED(url);
+
+	*out = &basic_context;
+	return 0;
+}
+
+int git_http_auth_dummy(
+	git_http_auth_context **out, const git_net_url *url)
+{
+	GIT_UNUSED(url);
+
+	*out = NULL;
+	return GIT_PASSTHROUGH;
+}
+