X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/641204dfbdb9fc870cdd2e7f9e3169a44693e7bf..refs/heads/stg-2.409-radius:/projects/stargazer/plugins/other/radius/radius.cpp

diff --git a/projects/stargazer/plugins/other/radius/radius.cpp b/projects/stargazer/plugins/other/radius/radius.cpp
index 591f4b63..45a9d0e1 100644
--- a/projects/stargazer/plugins/other/radius/radius.cpp
+++ b/projects/stargazer/plugins/other/radius/radius.cpp
@@ -18,711 +18,373 @@
  *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
  */
 
-/*
- *  This file contains a realization of radius data access plugin for Stargazer
- *
- *  $Revision: 1.14 $
- *  $Date: 2009/12/13 14:17:13 $
- *
- */
+#include "radius.h"
+
+#include "stg/store.h"
+#include "stg/users.h"
+#include "stg/plugin_creator.h"
+#include "stg/common.h"
 
 #include <algorithm>
-#include <signal.h>
+#include <stdexcept>
+#include <csignal>
+#include <cerrno>
+#include <cstring>
 
-#include "radius.h"
-#include "common.h"
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h> // UNIX
+#include <netinet/in.h> // IP
+#include <netinet/tcp.h> // TCP
+#include <netdb.h>
 
-extern volatile const time_t stgTime;
+using STG::Config;
+using STG::Conn;
 
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-class RAD_CREATOR
+namespace
 {
-private:
-    RADIUS * rad;
 
-public:
-    RAD_CREATOR()
-        : rad(new RADIUS())
-        {
-        };
-    ~RAD_CREATOR()
-        {
-        delete rad;
-        };
+PLUGIN_CREATOR<RADIUS> creator;
 
-    RADIUS * GetPlugin()
-        {
-        return rad;
-        };
-};
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-RAD_CREATOR radc;
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-BASE_PLUGIN * GetPlugin()
-{
-return radc.GetPlugin();
-}
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-uint16_t RAD_SETTINGS::GetPort() const
-{
-return port;
-}
-//-----------------------------------------------------------------------------
-uint32_t RAD_SETTINGS::GetServerIP() const
-{
-return serverIP;
-}
-//-----------------------------------------------------------------------------
-int RAD_SETTINGS::GetPassword(string * password) const
-{
-*password = RAD_SETTINGS::password;
-return 0;
-}
-//-----------------------------------------------------------------------------
-int RAD_SETTINGS::GetAuthServices(list<string> * svcs) const
-{
-*svcs = authServices;
-return 0;
-}
-//-----------------------------------------------------------------------------
-int RAD_SETTINGS::GetAcctServices(list<string> * svcs) const
-{
-*svcs = acctServices;
-return 0;
-}
-//-----------------------------------------------------------------------------
-int RAD_SETTINGS::ParseIP(const string & str, uint32_t * IP)
-{
-*IP = inet_addr(str.c_str());
-return *IP == INADDR_NONE ? -1 : 0;
-}
-//-----------------------------------------------------------------------------
-int RAD_SETTINGS::ParseIntInRange(const string & str, int min, int max, int * val)
-{
-if (str2x(str.c_str(), *val))
-    {
-    errorStr = "Incorrect value \'" + str + "\'.";
-    return -1;
-    }
-if (*val < min || *val > max)
-    {
-    errorStr = "Value \'" + str + "\' out of range.";
-    return -1;
-    }
-return 0;
 }
-//-----------------------------------------------------------------------------
-int RAD_SETTINGS::ParseServices(const vector<string> & str, list<string> * lst)
-{
-    copy(str.begin(), str.end(), back_inserter(*lst));
-    list<string>::iterator it(find(lst->begin(),
-                                   lst->end(),
-                                   "empty"));
-    if (it != lst->end())
-        *it = "";
 
-    return 0;
-}
-//-----------------------------------------------------------------------------
-int RAD_SETTINGS::ParseSettings(const MODULE_SETTINGS & s)
+extern "C" PLUGIN * GetPlugin()
 {
-int p;
-PARAM_VALUE pv;
-vector<PARAM_VALUE>::const_iterator pvi;
-///////////////////////////
-pv.param = "Port";
-pvi = find(s.moduleParams.begin(), s.moduleParams.end(), pv);
-if (pvi == s.moduleParams.end())
-    {
-    errorStr = "Parameter \'Port\' not found.";
-    printfd(__FILE__, "Parameter 'Port' not found\n");
-    return -1;
-    }
-if (ParseIntInRange(pvi->value[0], 2, 65535, &p))
-    {
-    errorStr = "Cannot parse parameter \'Port\': " + errorStr;
-    printfd(__FILE__, "Cannot parse parameter 'Port'\n");
-    return -1;
-    }
-port = p;
-///////////////////////////
-pv.param = "ServerIP";
-pvi = find(s.moduleParams.begin(), s.moduleParams.end(), pv);
-if (pvi == s.moduleParams.end())
-    {
-    serverIP = 0;
-    }
-else
-    {
-    if (ParseIP(pvi->value[0], &serverIP))
-        {
-        serverIP = 0;
-        }
-    }
-///////////////////////////
-pv.param = "Password";
-pvi = find(s.moduleParams.begin(), s.moduleParams.end(), pv);
-if (pvi == s.moduleParams.end())
-    {
-    errorStr = "Parameter \'Password\' not found.";
-    printfd(__FILE__, "Parameter 'Password' not found\n");
-    return -1;
-    }
-password = pvi->value[0];
-///////////////////////////
-pv.param = "AuthServices";
-pvi = find(s.moduleParams.begin(), s.moduleParams.end(), pv);
-if (pvi != s.moduleParams.end())
-    {
-    ParseServices(pvi->value, &authServices);
-    }
-///////////////////////////
-pv.param = "AcctServices";
-pvi = find(s.moduleParams.begin(), s.moduleParams.end(), pv);
-if (pvi != s.moduleParams.end())
-    {
-    ParseServices(pvi->value, &acctServices);
-    }
-
-return 0;
+    return creator.GetPlugin();
 }
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
+
 RADIUS::RADIUS()
+    : m_config(),
+      m_running(false),
+      m_stopped(true),
+      m_users(NULL),
+      m_store(NULL),
+      m_listenSocket(0),
+      m_logger(GetPluginLogger(GetStgLogger(), "radius"))
 {
-isRunning = false;
-}
-//-----------------------------------------------------------------------------
-void RADIUS::SetUsers(USERS * u)
-{
-users = u;
-}
-//-----------------------------------------------------------------------------
-void RADIUS::SetStgSettings(const SETTINGS * s)
-{
-stgSettings = s;
-}
-//-----------------------------------------------------------------------------
-void RADIUS::SetSettings(const MODULE_SETTINGS & s)
-{
-settings = s;
-}
-//-----------------------------------------------------------------------------
-void RADIUS::SetStore(BASE_STORE * s)
-{
-store = s;
 }
-//-----------------------------------------------------------------------------
+
 int RADIUS::ParseSettings()
 {
-int ret = radSettings.ParseSettings(settings);
-if (ret)
-    errorStr = radSettings.GetStrError();
-return ret;
-}
-//-----------------------------------------------------------------------------
-bool RADIUS::IsRunning()
-{
-return isRunning;
-}
-//-----------------------------------------------------------------------------
-const string RADIUS::GetVersion() const
-{
-return "RADIUS data access plugin v 0.6";
-}
-//-----------------------------------------------------------------------------
-uint16_t RADIUS::GetStartPosition() const
-{
-// Start before any authorizers!!!
-return 20;
-}
-//-----------------------------------------------------------------------------
-uint16_t RADIUS::GetStopPosition() const
-{
-return 20;
-}
-//-----------------------------------------------------------------------------
-void RADIUS::SetUserNotifier(user_iter)
-{
-}
-//-----------------------------------------------------------------------------
-void RADIUS::UnSetUserNotifier(user_iter)
-{
-}
-//-----------------------------------------------------------------------------
-int RADIUS::PrepareNet()
-{
-sock = socket(AF_INET, SOCK_DGRAM, 0);
-
-if (sock < 0)
-    {
-    errorStr = "Cannot create socket.";
-    printfd(__FILE__, "Cannot create socket\n");
-    return -1;
-    }
-
-inAddr.sin_family = AF_INET;
-inAddr.sin_port = htons(port);
-inAddr.sin_addr.s_addr = inet_addr("0.0.0.0");
-
-if (bind(sock, (struct sockaddr*)&inAddr, sizeof(inAddr)) < 0)
-    {
-    errorStr = "RADIUS: Bind failed.";
-    printfd(__FILE__, "Cannot bind socket\n");
-    return -1;
+    try {
+        m_config = STG::Config(m_settings);
+        return reconnect() ? 0 : -1;
+    } catch (const std::runtime_error& ex) {
+        m_logger("Failed to parse settings. %s", ex.what());
+        return -1;
     }
-
-return 0;
-}
-//-----------------------------------------------------------------------------
-int RADIUS::FinalizeNet()
-{
-close(sock);
-return 0;
 }
-//-----------------------------------------------------------------------------
+
 int RADIUS::Start()
 {
-string password;
-
-radSettings.GetPassword(&password);
-port = radSettings.GetPort();
-serverIP = radSettings.GetServerIP();
-radSettings.GetAuthServices(&authServices);
-radSettings.GetAcctServices(&acctServices);
+    if (m_running)
+        return 0;
 
-InitEncrypt(&ctx, password);
+    int res = pthread_create(&m_thread, NULL, run, this);
+    if (res == 0)
+        return 0;
 
-nonstop = true;
-
-if (PrepareNet())
-    {
+    m_error = strerror(res);
+    m_logger("Failed to create thread: '" + m_error + "'.");
     return -1;
-    }
-
-if (!isRunning)
-    {
-    if (pthread_create(&thread, NULL, Run, this))
-        {
-        errorStr = "Cannot create thread.";
-        printfd(__FILE__, "Cannot create thread\n");
-        return -1;
-        }
-    }
-
-errorStr = "";
-return 0;
 }
-//-----------------------------------------------------------------------------
+
 int RADIUS::Stop()
 {
-if (!IsRunning())
-    return 0;
+    std::set<std::string>::const_iterator it = m_logins.begin();
+    for (; it != m_logins.end(); ++it)
+        m_users->Unauthorize(*it, this, "Stopping RADIUS plugin.");
+    m_logins.clear();
 
-nonstop = false;
+    if (m_stopped)
+        return 0;
 
-map<string, RAD_SESSION>::iterator it;
-for (it = sessions.begin(); it != sessions.end(); ++it)
-    {
-    user_iter ui;
-    if (users->FindByName(it->second.userName, &ui))
-        {
-        ui->Unauthorize(this);
-        }
-    }
-sessions.erase(sessions.begin(), sessions.end());
-
-FinalizeNet();
-
-if (isRunning)
-    {
-    //5 seconds to thread stops itself
-    for (int i = 0; i < 25 && isRunning; i++)
-        {
-        usleep(200000);
-        }
-
-    //after 5 seconds waiting thread still running. now killing it
-    if (isRunning)
-        {
-        if (pthread_kill(thread, SIGINT))
-            {
-            errorStr = "Cannot kill thread.";
-            printfd(__FILE__, "Cannot kill thread\n");
-            return -1;
-            }
-        printfd(__FILE__, "RADIUS::Stop killed Run\n");
-        }
-    }
+    m_running = false;
 
-return 0;
-}
-//-----------------------------------------------------------------------------
-void * RADIUS::Run(void * d)
-{
-RADIUS * rad = (RADIUS *)d;
-RAD_PACKET packet;
-
-rad->isRunning = true;
-
-while (rad->nonstop)
-    {
-    if (!rad->WaitPackets(rad->sock))
-        {
-        continue;
-        }
-    if (rad->RecvData(&packet))
-        {
-        printfd(__FILE__, "RADIUS::Run Error on RecvData\n");
-        }
-    else
-        {
-        if (rad->ProcessData(&packet))
-            {
-            packet.packetType = RAD_REJECT_PACKET;
-            }
-        rad->Send(packet);
-        }
+    for (size_t i = 0; i < 25 && !m_stopped; i++) {
+        struct timespec ts = {0, 200000000};
+        nanosleep(&ts, NULL);
     }
 
-rad->isRunning = false;
-
-return NULL;
-}
-//-----------------------------------------------------------------------------
-int RADIUS::RecvData(RAD_PACKET * packet)
-{
-    int8_t buf[RAD_MAX_PACKET_LEN];
-    outerAddrLen = sizeof(struct sockaddr_in);
-    int dataLen = recvfrom(sock, buf, RAD_MAX_PACKET_LEN, 0, (struct sockaddr *)&outerAddr, &outerAddrLen);
-    if (dataLen > 0) {
-        Decrypt(&ctx, (char *)packet, (const char *)buf, dataLen / 8);
+    if (m_stopped) {
+        pthread_join(m_thread, NULL);
+        return 0;
     }
-    if (strncmp((char *)packet->magic, RAD_ID, RAD_MAGIC_LEN))
-        {
-        printfd(__FILE__, "RADIUS::RecvData Error magic. Wanted: '%s', got: '%s'\n", RAD_ID, packet->magic);
-        return -1;
-        }
-    return 0;
-}
-//-----------------------------------------------------------------------------
-int RADIUS::Send(const RAD_PACKET & packet)
-{
-int res, len = sizeof(RAD_PACKET);
-char buf[1032];
 
-Encrypt(&ctx, buf, (char *)&packet, len / 8);
-res = sendto(sock, buf, len, 0, (struct sockaddr *)&outerAddr, outerAddrLen);
+    if (m_config.connectionType == Config::UNIX)
+        unlink(m_config.bindAddress.c_str());
 
-return 0;
-}
-//-----------------------------------------------------------------------------
-int RADIUS::ProcessData(RAD_PACKET * packet)
-{
-//struct in_addr addr = {packet->ip};
-if (strncmp((const char *)packet->protoVer, "01", 2))
-    {
-    printfd(__FILE__, "RADIUS::ProcessData packet.protoVer incorrect\n");
+    m_error = "Failed to stop thread.";
+    m_logger(m_error);
     return -1;
-    }
-switch (packet->packetType)
-    {
-    case RAD_AUTZ_PACKET:
-        return ProcessAutzPacket(packet);
-    case RAD_AUTH_PACKET:
-        return ProcessAuthPacket(packet);
-    case RAD_POST_AUTH_PACKET:
-        return ProcessPostAuthPacket(packet);
-    case RAD_ACCT_START_PACKET:
-        return ProcessAcctStartPacket(packet);
-    case RAD_ACCT_STOP_PACKET:
-        return ProcessAcctStopPacket(packet);
-    case RAD_ACCT_UPDATE_PACKET:
-        return ProcessAcctUpdatePacket(packet);
-    case RAD_ACCT_OTHER_PACKET:
-        return ProcessAcctOtherPacket(packet);
-    default:
-        printfd(__FILE__, "RADIUS::ProcessData Unsupported packet type: %d\n", packet->packetType);
-        return -1;
-    };
-return 0;
 }
 //-----------------------------------------------------------------------------
-int RADIUS::ProcessAutzPacket(RAD_PACKET * packet)
+void* RADIUS::run(void* d)
 {
-USER_CONF conf;
-
-if (!IsAllowedService((char *)packet->service))
-    {
-    printfd(__FILE__, "RADIUS::ProcessAutzPacket service '%s' is not allowed to authorize\n", packet->service);
-    packet->packetType = RAD_REJECT_PACKET;
-    return 0;
-    }
-
-if (store->RestoreUserConf(&conf, (char *)packet->login))
-    {
-    packet->packetType = RAD_REJECT_PACKET;
-    printfd(__FILE__, "RADIUS::ProcessAutzPacket cannot restore conf for user '%s'\n", packet->login);
-    return 0;
-    }
+    sigset_t signalSet;
+    sigfillset(&signalSet);
+    pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
 
-// At this point service can be authorized at least
-// So we send a plain-text password
+    static_cast<RADIUS *>(d)->runImpl();
 
-packet->packetType = RAD_ACCEPT_PACKET;
-strncpy((char *)packet->password, conf.password.c_str(), RAD_PASSWORD_LEN);
-
-return 0;
+    return NULL;
 }
-//-----------------------------------------------------------------------------
-int RADIUS::ProcessAuthPacket(RAD_PACKET * packet)
-{
-user_iter ui;
-
-if (!CanAcctService((char *)packet->service))
-    {
-
-    // There are no sense to check for allowed service
-    // It has allready checked at previous stage (authorization)
-
-    printfd(__FILE__, "RADIUS::ProcessAuthPacket service '%s' neednot stargazer authentication\n", (char *)packet->service);
-    packet->packetType = RAD_ACCEPT_PACKET;
-    return 0;
-    }
 
-// At this point we have an accountable service
-// All other services got a password if allowed or rejected
-
-if (!FindUser(&ui, (char *)packet->login))
+bool RADIUS::reconnect()
+{
+    if (!m_conns.empty())
     {
-    packet->packetType = RAD_REJECT_PACKET;
-    printfd(__FILE__, "RADIUS::ProcessAuthPacket user '%s' not found\n", (char *)packet->login);
-    return 0;
+        std::deque<STG::Conn *>::const_iterator it;
+        for (it = m_conns.begin(); it != m_conns.end(); ++it)
+            delete(*it);
+        m_conns.clear();
     }
-
-if (ui->IsInetable())
+    if (m_listenSocket != 0)
     {
-    packet->packetType = RAD_ACCEPT_PACKET;
+        shutdown(m_listenSocket, SHUT_RDWR);
+        close(m_listenSocket);
     }
-else
+    if (m_config.connectionType == Config::UNIX)
+        m_listenSocket = createUNIX();
+    else
+        m_listenSocket = createTCP();
+    if (m_listenSocket == 0)
+        return false;
+    if (listen(m_listenSocket, 100) == -1)
     {
-    packet->packetType = RAD_REJECT_PACKET;
+        m_error = std::string("Error starting to listen socket: ") + strerror(errno);
+        m_logger(m_error);
+        return false;
     }
-
-packet->packetType = RAD_ACCEPT_PACKET;
-return 0;
+    return true;
 }
-//-----------------------------------------------------------------------------
-int RADIUS::ProcessPostAuthPacket(RAD_PACKET * packet)
-{
-user_iter ui;
 
-if (!CanAcctService((char *)packet->service))
+int RADIUS::createUNIX() const
+{
+    int fd = socket(AF_UNIX, SOCK_STREAM, 0);
+    if (fd == -1)
     {
-
-    // There are no sense to check for allowed service
-    // It has allready checked at previous stage (authorization)
-
-    packet->packetType = RAD_ACCEPT_PACKET;
-    return 0;
+        m_error = std::string("Error creating UNIX socket: ") + strerror(errno);
+        m_logger(m_error);
+        return 0;
     }
-
-if (!FindUser(&ui, (char *)packet->login))
+    struct sockaddr_un addr;
+    memset(&addr, 0, sizeof(addr));
+    addr.sun_family = AF_UNIX;
+    strncpy(addr.sun_path, m_config.bindAddress.c_str(), m_config.bindAddress.length());
+    unlink(m_config.bindAddress.c_str());
+    if (bind(fd, reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr)) == -1)
     {
-    packet->packetType = RAD_REJECT_PACKET;
-    printfd(__FILE__, "RADIUS::ProcessPostAuthPacket user '%s' not found\n", (char *)packet->login);
-    return 0;
+        shutdown(fd, SHUT_RDWR);
+        close(fd);
+        m_error = std::string("Error binding UNIX socket: ") + strerror(errno);
+        m_logger(m_error);
+        return 0;
     }
-
-// I think that only Framed-User services has sense to be accountable
-// So we have to supply a Framed-IP
-
-USER_IPS ips = ui->property.ips;
-packet->packetType = RAD_ACCEPT_PACKET;
-
-// Additional checking for Framed-User service
-
-if (!strncmp((char *)packet->service, "Framed-User", RAD_SERVICE_LEN))
-    packet->ip = ips[0].ip;
-else
-    packet->ip = 0;
-
-return 0;
+    chown(m_config.bindAddress.c_str(), m_config.sockUID, m_config.sockGID);
+    if (m_config.sockMode != static_cast<mode_t>(-1))
+        chmod(m_config.bindAddress.c_str(), m_config.sockMode);
+    return fd;
 }
-//-----------------------------------------------------------------------------
-int RADIUS::ProcessAcctStartPacket(RAD_PACKET * packet)
+
+int RADIUS::createTCP() const
 {
-user_iter ui;
+    addrinfo hints;
+    memset(&hints, 0, sizeof(addrinfo));
+
+    hints.ai_family = AF_INET;       /* Allow IPv4 */
+    hints.ai_socktype = SOCK_STREAM; /* Stream socket */
+    hints.ai_flags = AI_PASSIVE;     /* For wildcard IP address */
+    hints.ai_protocol = 0;           /* Any protocol */
+    hints.ai_canonname = NULL;
+    hints.ai_addr = NULL;
+    hints.ai_next = NULL;
 
-if (!FindUser(&ui, (char *)packet->login))
+    addrinfo* ais = NULL;
+    int res = getaddrinfo(m_config.bindAddress.c_str(), m_config.portStr.c_str(), &hints, &ais);
+    if (res != 0)
     {
-    packet->packetType = RAD_REJECT_PACKET;
-    printfd(__FILE__, "RADIUS::ProcessAcctStartPacket user '%s' not found\n", (char *)packet->login);
-    return 0;
+        m_error = "Error resolving address '" + m_config.bindAddress + "': " + gai_strerror(res);
+        m_logger(m_error);
+        return 0;
     }
 
-// At this point we have to unauthorize user only if it is an accountable service
-
-if (CanAcctService((char *)packet->service))
+    for (addrinfo* ai = ais; ai != NULL; ai = ai->ai_next)
     {
-    if (sessions.find((const char *)packet->sessid) != sessions.end())
+        int fd = socket(AF_INET, SOCK_STREAM, 0);
+        if (fd == -1)
         {
-        printfd(__FILE__, "RADIUS::ProcessAcctStartPacket session already started!\n");
-        packet->packetType = RAD_REJECT_PACKET;
-        return -1;
+            m_error = std::string("Error creating TCP socket: ") + strerror(errno);
+            m_logger(m_error);
+            freeaddrinfo(ais);
+            return 0;
         }
-    USER_IPS ips = ui->property.ips;
-    if (ui->Authorize(ips[0].ip, "", 0xffFFffFF, this))
+        if (bind(fd, ai->ai_addr, ai->ai_addrlen) == -1)
         {
-        printfd(__FILE__, "RADIUS::ProcessAcctStartPacket cannot authorize user '%s'\n", packet->login);
-        packet->packetType = RAD_REJECT_PACKET;
-        return -1;
+            shutdown(fd, SHUT_RDWR);
+            close(fd);
+            m_error = std::string("Error binding TCP socket: ") + strerror(errno);
+            m_logger(m_error);
+            continue;
         }
-    sessions[(const char *)packet->sessid].userName = (const char *)packet->login;
-    sessions[(const char *)packet->sessid].serviceType = (const char *)packet->service;
-    for_each(sessions.begin(), sessions.end(), SPrinter());
-    }
-else
-    {
-    printfd(__FILE__, "RADIUS::ProcessAcctStartPacket service '%s' can not be accounted\n", (char *)packet->service);
+        freeaddrinfo(ais);
+        return fd;
     }
 
-packet->packetType = RAD_ACCEPT_PACKET;
-return 0;
+    m_error = "Failed to resolve '" + m_config.bindAddress;
+    m_logger(m_error);
+
+    freeaddrinfo(ais);
+    return 0;
 }
-//-----------------------------------------------------------------------------
-int RADIUS::ProcessAcctStopPacket(RAD_PACKET * packet)
+
+void RADIUS::runImpl()
 {
-map<string, RAD_SESSION>::iterator sid;
+    m_running = true;
+    m_stopped = false;
 
-if ((sid = sessions.find((const char *)packet->sessid)) == sessions.end())
-    {
-    printfd(__FILE__, "RADIUS::ProcessAcctStopPacket session had not started yet\n");
-    packet->packetType = RAD_REJECT_PACKET;
-    return -1;
-    }
+    while (m_running) {
+        fd_set fds;
 
-user_iter ui;
+        buildFDSet(fds);
 
-if (!FindUser(&ui, sid->second.userName))
-    {
-    packet->packetType = RAD_REJECT_PACKET;
-    printfd(__FILE__, "RADIUS::ProcessPostAuthPacket user '%s' not found\n", sid->second.userName.c_str());
-    return 0;
-    }
+        struct timeval tv;
+        tv.tv_sec = 0;
+        tv.tv_usec = 500000;
+
+        int res = select(maxFD() + 1, &fds, NULL, NULL, &tv);
+        if (res < 0)
+        {
+            if (errno == EINTR)
+                continue;
+            m_error = std::string("'select' is failed: '") + strerror(errno) + "'.";
+            m_logger(m_error);
+            break;
+        }
 
-sessions.erase(sid);
+        if (!m_running)
+            break;
 
-ui->Unauthorize(this);
+        if (res > 0)
+            handleEvents(fds);
+        else
+        {
+            for (std::deque<Conn*>::iterator it = m_conns.begin(); it != m_conns.end(); ++it)
+                (*it)->tick();
+        }
 
-packet->packetType = RAD_ACCEPT_PACKET;
-return 0;
-}
-//-----------------------------------------------------------------------------
-int RADIUS::ProcessAcctUpdatePacket(RAD_PACKET * packet)
-{
-// Fake. May be used later
-packet->packetType = RAD_ACCEPT_PACKET;
-return 0;
+        cleanupConns();
+    }
+
+    m_stopped = true;
 }
-//-----------------------------------------------------------------------------
-int RADIUS::ProcessAcctOtherPacket(RAD_PACKET * packet)
+
+int RADIUS::maxFD() const
 {
-// Fake. May be used later
-packet->packetType = RAD_ACCEPT_PACKET;
-return 0;
+    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 RADIUS::InitEncrypt(BLOWFISH_CTX * ctx, const string & password)
+
+void RADIUS::buildFDSet(fd_set & fds) const
 {
-unsigned char keyL[RAD_PASSWORD_LEN];  // Пароль для шифровки
-memset(keyL, 0, RAD_PASSWORD_LEN);
-strncpy((char *)keyL, password.c_str(), RAD_PASSWORD_LEN);
-Blowfish_Init(ctx, keyL, RAD_PASSWORD_LEN);
+    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 RADIUS::Encrypt(BLOWFISH_CTX * ctx, char * dst, const char * src, int len8)
-{
-// len8 - длина в 8-ми байтовых блоках
-if (dst != src)
-    memcpy(dst, src, len8 * 8);
 
-for (int i = 0; i < len8; i++)
-    Blowfish_Encrypt(ctx, (uint32_t *)(dst + i*8), (uint32_t *)(dst + i*8 + 4));
-}
-//-----------------------------------------------------------------------------
-void RADIUS::Decrypt(BLOWFISH_CTX * ctx, char * dst, const char * src, int len8)
+void RADIUS::cleanupConns()
 {
-// len8 - длина в 8-ми байтовых блоках
-if (dst != src)
-    memcpy(dst, src, len8 * 8);
+    std::deque<STG::Conn *>::iterator pos;
+    for (pos = m_conns.begin(); pos != m_conns.end(); ++pos)
+        if (!(*pos)->isOk()) {
+            delete *pos;
+            *pos = NULL;
+        }
 
-for (int i = 0; i < len8; i++)
-    Blowfish_Decrypt(ctx, (uint32_t *)(dst + i*8), (uint32_t *)(dst + i*8 + 4));
-}
-//-----------------------------------------------------------------------------
-void RADIUS::PrintServices(const list<string> & svcs)
-{
-    for_each(svcs.begin(), svcs.end(), Printer());
+    pos = std::remove(m_conns.begin(), m_conns.end(), static_cast<STG::Conn *>(NULL));
+    m_conns.erase(pos, m_conns.end());
 }
-//-----------------------------------------------------------------------------
-bool RADIUS::FindUser(user_iter * ui, const std::string & login) const
+
+void RADIUS::handleEvents(const fd_set & fds)
 {
-if (users->FindByName(login, ui))
+    if (FD_ISSET(m_listenSocket, &fds))
+        acceptConnection();
+    else
     {
-    return false;
+        std::deque<STG::Conn *>::iterator it;
+        for (it = m_conns.begin(); it != m_conns.end(); ++it)
+            if (FD_ISSET((*it)->sock(), &fds))
+                (*it)->read();
+            else
+                (*it)->tick();
     }
-return true;
 }
-//-----------------------------------------------------------------------------
-bool RADIUS::CanAuthService(const std::string & svc) const
-{
-    return find(authServices.begin(), authServices.end(), svc) != authServices.end();
-}
-//-----------------------------------------------------------------------------
-bool RADIUS::CanAcctService(const std::string & svc) const
+
+void RADIUS::acceptConnection()
 {
-    return find(acctServices.begin(), acctServices.end(), svc) != acctServices.end();
+    if (m_config.connectionType == Config::UNIX)
+        acceptUNIX();
+    else
+        acceptTCP();
 }
-//-----------------------------------------------------------------------------
-bool RADIUS::IsAllowedService(const std::string & svc) const
+
+void RADIUS::acceptUNIX()
 {
-    return CanAuthService(svc) || CanAcctService(svc);
+    struct sockaddr_un addr;
+    memset(&addr, 0, sizeof(addr));
+    socklen_t size = sizeof(addr);
+    int res = accept(m_listenSocket, reinterpret_cast<sockaddr*>(&addr), &size);
+    if (res == -1)
+    {
+        m_error = std::string("Failed to accept UNIX connection: ") + strerror(errno);
+        m_logger(m_error);
+        return;
+    }
+    printfd(__FILE__, "New UNIX connection: '%s'\n", addr.sun_path);
+    m_conns.push_back(new Conn(*m_users, m_logger, *this, m_config, res, addr.sun_path));
 }
-//-----------------------------------------------------------------------------
-bool RADIUS::WaitPackets(int sd) const
-{
-fd_set rfds;
-FD_ZERO(&rfds);
-FD_SET(sd, &rfds);
-
-struct timeval tv;
-tv.tv_sec = 0;
-tv.tv_usec = 500000;
 
-int res = select(sd + 1, &rfds, NULL, NULL, &tv);
-if (res == -1) // Error
+void RADIUS::acceptTCP()
+{
+    struct sockaddr_in addr;
+    memset(&addr, 0, sizeof(addr));
+    socklen_t size = sizeof(addr);
+    int res = accept(m_listenSocket, reinterpret_cast<sockaddr*>(&addr), &size);
+    if (res == -1)
     {
-    if (errno != EINTR)
-        {
-        printfd(__FILE__, "Error on select: '%s'\n", strerror(errno));
-        }
-    return false;
+        m_error = std::string("Failed to accept TCP connection: ") + strerror(errno);
+        m_logger(m_error);
+        return;
     }
+    std::string remote = inet_ntostring(addr.sin_addr.s_addr) + ":" + x2str(ntohs(addr.sin_port));
+    printfd(__FILE__, "New TCP connection: '%s'\n", remote.c_str());
+    m_conns.push_back(new Conn(*m_users, m_logger, *this, m_config, res, remote));
+}
 
-if (res == 0) // Timeout
+void RADIUS::authorize(const USER& user)
+{
+    uint32_t ip = 0;
+    const std::string& login(user.GetLogin());
+    if (!m_users->Authorize(login, ip, 0xffFFffFF, this))
     {
-    return false;
+        m_error = "Unable to authorize user '" + login + "' with ip " + inet_ntostring(ip) + ".";
+        m_logger(m_error);
     }
+    else
+        m_logins.insert(login);
+}
 
-return true;
+void RADIUS::unauthorize(const std::string& login, const std::string& reason)
+{
+    const std::set<std::string>::const_iterator it = m_logins.find(login);
+    if (it == m_logins.end())
+        return;
+    m_logins.erase(it);
+    m_users->Unauthorize(login, this, reason);
 }