From f081fe91875fc285fb2723a05a069e904d425591 Mon Sep 17 00:00:00 2001
From: Jan Kaluza <hanzz.k@gmail.com>
Date: Wed, 1 Aug 2012 13:50:38 +0200
Subject: [PATCH] Support for [registration] allowed_usernames

---
 src/config.cpp           |  1 +
 src/userregistration.cpp | 19 ++++++++++---------
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/src/config.cpp b/src/config.cpp
index e7f505f5..3ec7f508 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -101,6 +101,7 @@ bool Config::load(std::istream &ifs, boost::program_options::options_description
 		("registration.instructions", value<std::string>()->default_value("Enter your legacy network username and password."), "Instructions showed to user in registration form")
 		("registration.username_label", value<std::string>()->default_value("Legacy network username:"), "Label for username field")
 		("registration.username_mask", value<std::string>()->default_value(""), "Username mask")
+		("registration.allowed_usernanames", value<std::string>()->default_value(""), "Allowed usernames")
 		("registration.auto_register", value<bool>()->default_value(false), "Register new user automatically when the presence arrives.")
 		("registration.encoding", value<std::string>()->default_value("utf8"), "Default encoding in registration form")
 		("registration.require_local_account", value<bool>()->default_value(false), "True if users have to have a local account to register to this transport from remote servers.")
diff --git a/src/userregistration.cpp b/src/userregistration.cpp
index 7d083c2e..e32507df 100644
--- a/src/userregistration.cpp
+++ b/src/userregistration.cpp
@@ -29,6 +29,7 @@
 #include <boost/shared_ptr.hpp>
 #include <boost/thread.hpp>
 #include <boost/date_time/posix_time/posix_time.hpp>
+#include <boost/regex.hpp> 
 
 using namespace Swift;
 
@@ -441,15 +442,15 @@ bool UserRegistration::handleSetRequest(const Swift::JID& from, const Swift::JID
 // 		return true;
 // 	}
 
-//TODO: Part of spectrum1 registration stuff, this should be potentially rewritten for S2 too
-// #if GLIB_CHECK_VERSION(2,14,0)
-// 	if (!CONFIG_STRING(m_config, "registration.reg_allowed_usernames").empty() &&
-// 		!g_regex_match_simple(CONFIG_STRING(m_config, "registration.reg_allowed_usernames"), newUsername.c_str(),(GRegexCompileFlags) (G_REGEX_CASELESS | G_REGEX_EXTENDED), (GRegexMatchFlags) 0)) {
-// 		Log("UserRegistration", "This is not valid username: "<< newUsername);
-// 		sendError(from, id, ErrorPayload::NotAcceptable, ErrorPayload::Modify);
-// 		return true;
-// 	}
-// #endif
+	if (!CONFIG_STRING(m_config, "registration.allowed_usernames").empty()) {
+		boost::regex expression(CONFIG_STRING(m_config, "registration.allowed_usernames"));
+		if (!regex_match(newUsername, expression)) {
+			LOG4CXX_INFO(logger, "This is not valid username: " << newUsername);
+			sendError(from, id, ErrorPayload::NotAcceptable, ErrorPayload::Modify);
+			return true;
+		}
+	}
+
 	if (!registered) {
 		res.jid = barejid;
 		res.uin = newUsername;