Make early protocol auth mechanism generic, and add SRP

Adds everything needed for SRP (and everything works too),
but still deactivated, as protocol v25 init packets aren't final yet.
Can be activated by changing the LATEST_PROTOCOL_VERSION header to 25
inside networkprotocol.h.

1 files changed, 37 insertions, 0 deletions

diff --git a/src/util/auth.h b/src/util/auth.h
new file mode 100644
index 000000000..36d8c20a4
--- /dev/null
+++ b/src/util/auth.h
@@ -0,0 +1,37 @@
+/*
+Minetest
+Copyright (C) 2015 est31 <MTest31@outlook.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef AUTH_H
+#define AUTH_H
+
+std::string translatePassword(const std::string &name,
+	const std::string &password);
+void getSRPVerifier(const std::string &name,
+	const std::string &password, char **salt, size_t *salt_len,
+	char **bytes_v, size_t *len_v);
+std::string getSRPVerifier(const std::string &name,
+	const std::string &password);
+std::string getSRPVerifier(const std::string &name,
+	const std::string &password, const std::string &salt);
+std::string encodeSRPVerifier(const std::string &verifier,
+	const std::string &salt);
+bool decodeSRPVerifier(const std::string &enc_pwd,
+	std::string *salt, std::string *bytes_v);
+
+#endif
\ No newline at end of file