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-rw-r--r--plugins/mod_auth_internal_hashed.lua180
1 files changed, 180 insertions, 0 deletions
diff --git a/plugins/mod_auth_internal_hashed.lua b/plugins/mod_auth_internal_hashed.lua
new file mode 100644
index 00000000..39a263dc
--- /dev/null
+++ b/plugins/mod_auth_internal_hashed.lua
@@ -0,0 +1,180 @@
+-- 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("auth_internal_hashed");
+local type = type;
+local error = error;
+local ipairs = ipairs;
+local hashes = require "util.hashes";
+local jid_bare = require "util.jid".bare;
+local getAuthenticationDatabaseSHA1 = require "util.sasl.scram".getAuthenticationDatabaseSHA1;
+local config = require "core.configmanager";
+local usermanager = require "core.usermanager";
+local generate_uuid = require "util.uuid".generate;
+local new_sasl = require "util.sasl".new;
+local nodeprep = require "util.encodings".stringprep.nodeprep;
+local hosts = hosts;
+
+-- COMPAT w/old trunk: remove these two lines before 0.8 release
+local hmac_sha1 = require "util.hmac".sha1;
+local sha1 = require "util.hashes".sha1;
+
+local to_hex;
+do
+ local function replace_byte_with_hex(byte)
+ return ("%02x"):format(byte:byte());
+ end
+ function to_hex(binary_string)
+ return binary_string:gsub(".", replace_byte_with_hex);
+ end
+end
+
+local from_hex;
+do
+ local function replace_hex_with_byte(hex)
+ return string.char(tonumber(hex, 16));
+ end
+ function from_hex(hex_string)
+ return hex_string:gsub("..", replace_hex_with_byte);
+ end
+end
+
+
+local prosody = _G.prosody;
+
+-- Default; can be set per-user
+local iteration_count = 4096;
+
+function new_hashpass_provider(host)
+ local provider = { name = "internal_hashed" };
+ log("debug", "initializing hashpass authentication provider for host '%s'", host);
+
+ function provider.test_password(username, password)
+ local credentials = datamanager.load(username, host, "accounts") or {};
+
+ if credentials.password ~= nil and string.len(credentials.password) ~= 0 then
+ if credentials.password ~= password then
+ return nil, "Auth failed. Provided password is incorrect.";
+ end
+
+ if provider.set_password(username, credentials.password) == nil then
+ return nil, "Auth failed. Could not set hashed password from plaintext.";
+ else
+ return true;
+ end
+ end
+
+ if credentials.iteration_count == nil or credentials.salt == nil or string.len(credentials.salt) == 0 then
+ return nil, "Auth failed. Stored salt and iteration count information is not complete.";
+ end
+
+ -- convert hexpass to stored_key and server_key
+ -- COMPAT w/old trunk: remove before 0.8 release
+ if credentials.hashpass then
+ local salted_password = from_hex(credentials.hashpass);
+ credentials.stored_key = sha1(hmac_sha1(salted_password, "Client Key"), true);
+ credentials.server_key = to_hex(hmac_sha1(salted_password, "Server Key"));
+ credentials.hashpass = nil
+ datamanager.store(username, host, "accounts", credentials);
+ end
+
+ local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, credentials.salt, credentials.iteration_count);
+
+ local stored_key_hex = to_hex(stored_key);
+ local server_key_hex = to_hex(server_key);
+
+ if valid and stored_key_hex == credentials.stored_key and server_key_hex == credentials.server_key then
+ return true;
+ else
+ return nil, "Auth failed. Invalid username, password, or password hash information.";
+ end
+ end
+
+ function provider.set_password(username, password)
+ local account = datamanager.load(username, host, "accounts");
+ if account then
+ account.salt = account.salt or generate_uuid();
+ account.iteration_count = account.iteration_count or iteration_count;
+ local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, account.salt, account.iteration_count);
+ local stored_key_hex = to_hex(stored_key);
+ local server_key_hex = to_hex(server_key);
+
+ account.stored_key = stored_key_hex
+ account.server_key = server_key_hex
+
+ account.password = nil;
+ return datamanager.store(username, host, "accounts", account);
+ end
+ return nil, "Account not available.";
+ end
+
+ function provider.user_exists(username)
+ 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) and (account.password == nil or string.len(account.password) == 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)
+ local salt = generate_uuid();
+ local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, salt, iteration_count);
+ local stored_key_hex = to_hex(stored_key);
+ local server_key_hex = to_hex(server_key);
+ return datamanager.store(username, host, "accounts", {stored_key = stored_key_hex, server_key = server_key_hex, salt = salt, iteration_count = iteration_count});
+ end
+
+ function provider.get_sasl_handler()
+ local realm = module:get_option("sasl_realm") or module.host;
+ local testpass_authentication_profile = {
+ plain_test = function(username, password, realm)
+ local prepped_username = nodeprep(username);
+ if not prepped_username then
+ log("debug", "NODEprep failed on username: %s", username);
+ return "", nil;
+ end
+ return usermanager.test_password(prepped_username, password, realm), true;
+ end,
+ scram_sha_1 = function(username, realm)
+ local credentials = datamanager.load(username, host, "accounts") or {};
+ if credentials.password then
+ usermanager.set_password(username, credentials.password, host);
+ credentials = datamanager.load(username, host, "accounts") or {};
+ end
+
+ -- convert hexpass to stored_key and server_key
+ -- COMPAT w/old trunk: remove before 0.8 release
+ if credentials.hashpass then
+ local salted_password = from_hex(credentials.hashpass);
+ credentials.stored_key = sha1(hmac_sha1(salted_password, "Client Key"), true);
+ credentials.server_key = to_hex(hmac_sha1(salted_password, "Server Key"));
+ credentials.hashpass = nil
+ datamanager.store(username, host, "accounts", credentials);
+ end
+
+ local stored_key, server_key, iteration_count, salt = credentials.stored_key, credentials.server_key, credentials.iteration_count, credentials.salt;
+ stored_key = stored_key and from_hex(stored_key);
+ server_key = server_key and from_hex(server_key);
+ return stored_key, server_key, iteration_count, salt, true;
+ end
+ };
+ return new_sasl(realm, testpass_authentication_profile);
+ end
+
+ return provider;
+end
+
+module:add_item("auth-provider", new_hashpass_provider(module.host));
+