Check in mod_hashpassauth -- works!

1 files changed, 127 insertions, 0 deletions

diff --git a/plugins/mod_hashpassauth.lua b/plugins/mod_hashpassauth.lua
new file mode 100644
index 00000000..3c5cd291
--- /dev/null
+++ b/plugins/mod_hashpassauth.lua
@@ -0,0 +1,127 @@
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
+-- Copyright (C) 2010 Jeff Mitchell
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local datamanager = require "util.datamanager";
+local log = require "util.logger".init("usermanager");
+local type = type;
+local error = error;
+local ipairs = ipairs;
+local hashes = require "util.hashes";
+local jid_bare = require "util.jid".bare;
+local saltedPasswordSHA1 = require "util.sasl.scram".saltedPasswordSHA1;
+local config = require "core.configmanager";
+local usermanager = require "core.usermanager";
+local generate_uuid = require "util.uuid".generate;
+local hosts = hosts;
+
+local prosody = _G.prosody;
+
+local is_cyrus = usermanager.is_cyrus;
+
+-- Default; can be set per-user
+local iteration_count = 4096;
+
+function new_hashpass_provider(host)
+	local provider = { name = "hashpass" };
+	log("debug", "initializing hashpass authentication provider for host '%s'", host);
+
+	function provider.test_password(username, password)
+		log("debug", "test password for user %s at host %s", username, module.host);
+		if is_cyrus(host) then return nil, "Legacy auth not supported with Cyrus SASL."; end
+		local credentials = datamanager.load(username, host, "accounts") or {};
+	
+		if credentials.hashpass == nil or credentials.iteration_count == nil or credentials.salt == nil then
+			return nil, "Auth failed. Stored credential information is not complete.";
+		end
+
+		local valid, binpass = saltedPasswordSHA1(password, credentials.salt, credentials.iteration_count);
+		local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
+		if valid then
+			log("debug", "salted password returned valid");
+		else
+			log("debug", "salted password returned not valid");
+		end
+		log("debug", "hexpass is '%s', stored pass is '%s'", hexpass, credentials.hashpass);
+		if valid and hexpass == credentials.hashpass then
+			return true;
+		else
+			return nil, "Auth failed. Invalid username, password, or password hash information.";
+		end
+	end
+
+	function provider.get_password(username)
+		log("debug", "get_password for username '%s' at host '%s'", username, module.host);
+		if is_cyrus(host) then return nil, "Passwords unavailable for Cyrus SASL."; end
+		return (datamanager.load(username, host, "accounts") or {}).hashpass;
+	end
+	
+	function provider.set_password(username, password)
+		if is_cyrus(host) then return nil, "Passwords unavailable for Cyrus SASL."; end
+		local account = datamanager.load(username, host, "accounts");
+		if account then
+			if account.iteration_count == nil then
+				account.iteration_count = iteration_count;
+			end
+
+			if account.salt == nil then
+				account.salt = generate_uuid();
+			end
+
+			local valid, binpass = saltedPasswordSHA1(password, account.salt, account.iteration_count);
+			local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
+			account.hashpass = hexpass;
+
+			return datamanager.store(username, host, "accounts", account);
+		end
+		return nil, "Account not available.";
+	end
+
+	function provider.user_exists(username)
+		if is_cyrus(host) then return true; end
+		local account = datamanager.load(username, host, "accounts");
+		if not account then
+			log("debug", "account not found for username '%s' at host '%s'", username, module.host);
+			return nil, "Auth failed. Invalid username";
+		end
+		if account.hashpass == nil or string.len(account.hashpass) == 0 then
+			log("debug", "account password not set or zero-length for username '%s' at host '%s'", username, module.host);
+			return nil, "Auth failed. Password invalid.";
+		end
+		return true;
+	end
+
+	function provider.create_user(username, password)
+		if is_cyrus(host) then return nil, "Account creation/modification not available with Cyrus SASL."; end
+		local salt = generate_uuid();
+		local valid, binpass = saltedPasswordSHA1(password, salt, iteration_count);
+		local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
+		return datamanager.store(username, host, "accounts", {hashpass = hexpass, salt = salt, iteration_count = iteration_count});
+	end
+
+	function provider.get_supported_methods()
+		return {["PLAIN"] = true}; -- TODO this should be taken from the config
+	end
+
+	function provider.is_admin(jid)
+		local admins = config.get(host, "core", "admins");
+		if admins ~= config.get("*", "core", "admins") and type(admins) == "table" then
+			jid = jid_bare(jid);
+			for _,admin in ipairs(admins) do
+				if admin == jid then return true; end
+			end
+		elseif admins then
+			log("error", "Option 'admins' for host '%s' is not a table", host);
+		end
+		return is_admin(jid); -- Test whether it's a global admin instead
+	end
+	return provider;
+end
+
+module:add_item("auth-provider", new_hashpass_provider(module.host));
+