--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+ * Author : Boris Mikhailenko <stg34@stargazer.dp.ua>
+ * Author : Maxim Mamontov <faust@stargazer.dp.ua>
+ */
+
+#include "configproto.h"
+
+#include "conn.h"
+
+#include "parser_server_info.h"
+#include "parser_admins.h"
+#include "parser_tariffs.h"
+#include "parser_users.h"
+#include "parser_services.h"
+#include "parser_message.h"
+#include "parser_user_info.h"
+#include "parser_auth_by.h"
+
+#include "stg/common.h"
+#include "stg/logger.h"
+
+#include <algorithm>
+#include <functional>
+#include <vector>
+#include <csignal>
+#include <cstring>
+#include <cerrno>
+#include <cassert>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
+namespace SP = STG::PARSER;
+
+CONFIGPROTO::CONFIGPROTO(STG::PluginLogger & l)
+ : m_settings(NULL),
+ m_admins(NULL),
+ m_tariffs(NULL),
+ m_users(NULL),
+ m_services(NULL),
+ m_corporations(NULL),
+ m_store(NULL),
+ m_port(0),
+ m_bindAddress("0.0.0.0"),
+ m_running(false),
+ m_stopped(true),
+ m_logger(l),
+ m_listenSocket(-1)
+{
+}
+
+CONFIGPROTO::~CONFIGPROTO()
+{
+ {
+ std::deque<STG::Conn *>::iterator it;
+ for (it = m_conns.begin(); it != m_conns.end(); ++it)
+ delete *it;
+ }
+ {
+ BASE_PARSER::REGISTRY::iterator it;
+ for (it = m_registry.begin(); it != m_registry.end(); ++it)
+ delete it->second;
+ }
+}
+
+int CONFIGPROTO::Prepare()
+{
+ sigset_t sigmask, oldmask;
+ sigemptyset(&sigmask);
+ sigaddset(&sigmask, SIGINT);
+ sigaddset(&sigmask, SIGTERM);
+ sigaddset(&sigmask, SIGUSR1);
+ sigaddset(&sigmask, SIGHUP);
+ pthread_sigmask(SIG_BLOCK, &sigmask, &oldmask);
+ m_listenSocket = socket(PF_INET, SOCK_STREAM, 0);
+
+ if (m_listenSocket < 0)
+ {
+ m_errorStr = std::string("Cannot create listen socket: '") + strerror(errno) + "'.";
+ m_logger(m_errorStr);
+ return -1;
+ }
+
+ int dummy = 1;
+
+ if (setsockopt(m_listenSocket, SOL_SOCKET, SO_REUSEADDR, &dummy, 4) != 0)
+ {
+ m_errorStr = std::string("Failed to set SO_REUSEADDR to the listen socket: '") + strerror(errno) + "'.";
+ m_logger(m_errorStr);
+ return -1;
+ }
+
+ if (!Bind())
+ return -1;
+
+ if (listen(m_listenSocket, 64) == -1) // TODO: backlog length
+ {
+ m_errorStr = std::string("Failed to start listening for connections: '") + strerror(errno) + "'.";
+ m_logger(m_errorStr);
+ return -1;
+ }
+
+ RegisterParsers();
+
+ m_running = true;
+ m_stopped = false;
+ return 0;
+}
+
+int CONFIGPROTO::Stop()
+{
+ m_running = false;
+ for (int i = 0; i < 5 && !m_stopped; ++i)
+ {
+ struct timespec ts = {0, 200000000};
+ nanosleep(&ts, NULL);
+ }
+
+ if (!m_stopped)
+ {
+ m_errorStr = "Cannot stop listenign thread.";
+ m_logger(m_errorStr);
+ return -1;
+ }
+
+ shutdown(m_listenSocket, SHUT_RDWR);
+ close(m_listenSocket);
+ return 0;
+}
+
+void CONFIGPROTO::Run()
+{
+ while (m_running)
+ {
+ fd_set fds;
+
+ BuildFDSet(fds);
+
+ struct timeval tv;
+ tv.tv_sec = 0;
+ tv.tv_usec = 500000;
+
+ int res = select(MaxFD() + 1, &fds, NULL, NULL, &tv);
+ if (res < 0)
+ {
+ m_errorStr = std::string("'select' is failed: '") + strerror(errno) + "'.";
+ printfd(__FILE__, "%s\n", m_errorStr.c_str());
+ m_logger(m_errorStr);
+ break;
+ }
+ if (!m_running)
+ break;
+ if (res > 0)
+ HandleEvents(fds);
+
+ CleanupConns();
+ }
+ m_stopped = true;
+}
+
+bool CONFIGPROTO::Bind()
+{
+ const hostent * he = gethostbyname(m_bindAddress.c_str());
+ if (he == NULL)
+ {
+ m_errorStr = "Failed to resolve name '" + m_bindAddress + "': '" + hstrerror(h_errno) + "'.";
+ printfd(__FILE__, "%s\n", m_errorStr.c_str());
+ m_logger(m_errorStr);
+ return false;
+ }
+
+ char ** ptr = he->h_addr_list;
+ while (*ptr != NULL)
+ {
+ struct sockaddr_in listenAddr;
+ listenAddr.sin_family = PF_INET;
+ listenAddr.sin_port = htons(m_port);
+ listenAddr.sin_addr.s_addr = *reinterpret_cast<in_addr_t *>(*ptr);
+
+ printfd(__FILE__, "Trying to bind to %s:%d\n", inet_ntostring(listenAddr.sin_addr.s_addr).c_str(), m_port);
+
+ if (bind(m_listenSocket, reinterpret_cast<sockaddr *>(&listenAddr), sizeof(listenAddr)) == 0)
+ return true;
+
+ m_errorStr = std::string("Cannot bind listen socket: '") + strerror(errno) + "'.";
+ printfd(__FILE__, "%s\n", m_errorStr.c_str());
+ m_logger(m_errorStr);
+
+ ++ptr;
+ }
+
+ return false;
+}
+
+void CONFIGPROTO::RegisterParsers()
+{
+ assert(m_settings != NULL);
+ assert(m_store != NULL);
+ assert(m_admins != NULL);
+ assert(m_users != NULL);
+ assert(m_tariffs != NULL);
+ assert(m_services != NULL);
+ assert(m_corporations != NULL);
+
+ SP::GET_SERVER_INFO::FACTORY::Register(m_registry, *m_settings, *m_users, *m_tariffs);
+
+ SP::GET_ADMINS::FACTORY::Register(m_registry, *m_admins);
+ SP::ADD_ADMIN::FACTORY::Register(m_registry, *m_admins);
+ SP::DEL_ADMIN::FACTORY::Register(m_registry, *m_admins);
+ SP::CHG_ADMIN::FACTORY::Register(m_registry, *m_admins);
+
+ SP::GET_TARIFFS::FACTORY::Register(m_registry, *m_tariffs);
+ SP::ADD_TARIFF::FACTORY::Register(m_registry, *m_tariffs);
+ SP::DEL_TARIFF::FACTORY::Register(m_registry, *m_tariffs, *m_users);
+ SP::CHG_TARIFF::FACTORY::Register(m_registry, *m_tariffs);
+
+ SP::GET_USERS::FACTORY::Register(m_registry, *m_users);
+ SP::GET_USER::FACTORY::Register(m_registry, *m_users);
+ SP::ADD_USER::FACTORY::Register(m_registry, *m_users);
+ SP::DEL_USER::FACTORY::Register(m_registry, *m_users);
+ SP::CHG_USER::FACTORY::Register(m_registry, *m_users, *m_store, *m_tariffs);
+ SP::CHECK_USER::FACTORY::Register(m_registry, *m_users);
+
+ SP::GET_SERVICES::FACTORY::Register(m_registry, *m_services);
+ SP::GET_SERVICE::FACTORY::Register(m_registry, *m_services);
+ SP::ADD_SERVICE::FACTORY::Register(m_registry, *m_services);
+ SP::DEL_SERVICE::FACTORY::Register(m_registry, *m_services);
+ SP::CHG_SERVICE::FACTORY::Register(m_registry, *m_services);
+
+ SP::SEND_MESSAGE::FACTORY::Register(m_registry, *m_users);
+
+ SP::AUTH_BY::FACTORY::Register(m_registry, *m_users);
+
+ SP::USER_INFO::FACTORY::Register(m_registry, *m_users);
+}
+
+int CONFIGPROTO::MaxFD() const
+{
+ int maxFD = m_listenSocket;
+ std::deque<STG::Conn *>::const_iterator it;
+ for (it = m_conns.begin(); it != m_conns.end(); ++it)
+ if (maxFD < (*it)->Sock())
+ maxFD = (*it)->Sock();
+ return maxFD;
+}
+
+void CONFIGPROTO::BuildFDSet(fd_set & fds) const
+{
+ FD_ZERO(&fds);
+ FD_SET(m_listenSocket, &fds);
+ std::deque<STG::Conn *>::const_iterator it;
+ for (it = m_conns.begin(); it != m_conns.end(); ++it)
+ FD_SET((*it)->Sock(), &fds);
+}
+
+void CONFIGPROTO::CleanupConns()
+{
+ std::deque<STG::Conn *>::iterator pos;
+ for (pos = m_conns.begin(); pos != m_conns.end(); ++pos)
+ if (((*pos)->IsDone() && !(*pos)->IsKeepAlive()) || !(*pos)->IsOk())
+ {
+ delete *pos;
+ *pos = NULL;
+ }
+
+ pos = std::remove(m_conns.begin(), m_conns.end(), static_cast<STG::Conn *>(NULL));
+ m_conns.erase(pos, m_conns.end());
+}
+
+void CONFIGPROTO::HandleEvents(const fd_set & fds)
+{
+ if (FD_ISSET(m_listenSocket, &fds))
+ AcceptConnection();
+ else
+ {
+ std::deque<STG::Conn *>::iterator it;
+ for (it = m_conns.begin(); it != m_conns.end(); ++it)
+ if (FD_ISSET((*it)->Sock(), &fds))
+ (*it)->Read();
+ }
+}
+
+void CONFIGPROTO::AcceptConnection()
+{
+ struct sockaddr_in outerAddr;
+ socklen_t outerAddrLen(sizeof(outerAddr));
+ int sock = accept(m_listenSocket, reinterpret_cast<sockaddr *>(&outerAddr), &outerAddrLen);
+
+ if (sock < 0)
+ {
+ m_errorStr = std::string("Failed to accept connection: '") + strerror(errno) + "'.";
+ printfd(__FILE__, "%s\n", m_errorStr.c_str());
+ m_logger(m_errorStr);
+ return;
+ }
+
+ assert(m_admins != NULL);
+
+ try
+ {
+ m_conns.push_back(new STG::Conn(m_registry, *m_admins, sock, outerAddr, m_logger));
+ printfd(__FILE__, "New connection from %s:%d. Total connections: %d\n", inet_ntostring(m_conns.back()->IP()).c_str(), m_conns.back()->Port(), m_conns.size());
+ }
+ catch (const STG::Conn::Error & error)
+ {
+ // Unlikely.
+ m_logger(std::string("Failed to create new client connection: '") + error.what() + "'.");
+ }
+}
git.stg.codes / stg.git / blobdiff