From 050eacd142401b2b8fdea7ceaea3533dbcc2af14 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Thu, 15 Feb 2018 13:05:00 -0800
Subject: [PATCH] ircd::m: Add m::user helpers to generate password hash and
 access tokens.

---
 include/ircd/m/user.h |  3 +++
 ircd/m/user.cc        | 27 +++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/include/ircd/m/user.h b/include/ircd/m/user.h
index 6dd771ded..e114e0d7e 100644
--- a/include/ircd/m/user.h
+++ b/include/ircd/m/user.h
@@ -25,6 +25,9 @@ struct ircd::m::user
 	static room accounts;
 	static room sessions;
 
+	static string_view gen_password_hash(const mutable_buffer &out, const string_view &candidate);
+	static string_view gen_access_token(const mutable_buffer &out);
+
 	bool is_active() const;
 	bool is_password(const string_view &password) const;
 
diff --git a/ircd/m/user.cc b/ircd/m/user.cc
index eec1a0b5a..edbf50291 100644
--- a/ircd/m/user.cc
+++ b/ircd/m/user.cc
@@ -201,3 +201,30 @@ const
 		buf, user_id.local(), my_host()
 	};
 }
+
+ircd::string_view
+ircd::m::user::gen_access_token(const mutable_buffer &buf)
+{
+	static const size_t token_max{32};
+	static const auto &token_dict{rand::dict::alpha};
+
+	const mutable_buffer out
+	{
+		data(buf), std::min(token_max, size(buf))
+	};
+
+	return rand::string(token_dict, out);
+}
+
+ircd::string_view
+ircd::m::user::gen_password_hash(const mutable_buffer &out,
+                                 const string_view &supplied_password)
+{
+	//TODO: ADD SALT
+	const sha256::buf hash
+	{
+		sha256{supplied_password}
+	};
+
+	return b64encode_unpadded(out, hash);
+}