Show config only on demand.

[stg.git] / projects / stargazer / plugins / configuration / sgconfig / configproto.cpp

diff --git a/projects/stargazer/plugins/configuration/sgconfig/configproto.cpp b/projects/stargazer/plugins/configuration/sgconfig/configproto.cpp
index a5ffcf5b3c5d4a4828d26245cd3e117c6c5a1be6..f012fa1a7e6c1a192ddc5b8beb6691f7c62a117b 100644 (file)
--- a/projects/stargazer/plugins/configuration/sgconfig/configproto.cpp
+++ b/projects/stargazer/plugins/configuration/sgconfig/configproto.cpp
@@ -14,217 +14,308 @@
  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 

-/*
- *    Date: 27.10.2002
- */
-

 /*
  *    Author : Boris Mikhailenko <stg34@stargazer.dp.ua>
 /*
  *    Author : Boris Mikhailenko <stg34@stargazer.dp.ua>

- */
-
- /*
- $Revision: 1.22 $
- $Date: 2010/10/04 20:24:14 $
- $Author: faust $
+ *    Author : Maxim Mamontov <faust@stargazer.dp.ua>

  */
 
 #include "configproto.h"
 
  */
 
 #include "configproto.h"
 

-#include "parser.h"
-#include "parser_auth_by.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_user_info.h"

+#include "parser_auth_by.h"

 
 

-#include "stg/users.h"
-#include "stg/admins.h"
-#include "stg/tariffs.h"
-#include "stg/logger.h"

 #include "stg/common.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>

 
 

-#include <unistd.h>
+namespace SP = STG::PARSER;

 
 

-//-----------------------------------------------------------------------------
-void ParseXMLStart(void *data, const char *el, const char **attr)
+CONFIGPROTO::CONFIGPROTO(PLUGIN_LOGGER & 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;
+}
+
+int CONFIGPROTO::Prepare()

 {
 {

-CONFIGPROTO * cp = static_cast<CONFIGPROTO *>(data);
+    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 (cp->currParser)
+    if (m_listenSocket < 0)

     {
     {

-    cp->currParser->SetCurrAdmin(*cp->currAdmin);
-    cp->currParser->ParseStart(data, el, attr);
+        m_errorStr = std::string("Cannot create listen socket: '") + strerror(errno) + "'.";
+        m_logger(m_errorStr);
+        return -1;

     }
     }

-else
+
+    int dummy = 1;
+
+    if (setsockopt(m_listenSocket, SOL_SOCKET, SO_REUSEADDR, &dummy, 4) != 0)

     {
     {

-    for (size_t i = 0; i < cp->dataParser.size(); i++)
-        {
-        cp->dataParser[i]->SetCurrAdmin(*cp->currAdmin);
-        cp->dataParser[i]->Reset();
-        if (cp->dataParser[i]->ParseStart(data, el, attr) == 0)
-            {
-            cp->currParser = cp->dataParser[i];
-            break;
-            }
-        else
-            {
-            cp->dataParser[i]->Reset();
-            }
-        }
+        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;

 }
 }

-//-----------------------------------------------------------------------------
-void ParseXMLEnd(void *data, const char *el)
+
+int CONFIGPROTO::Stop()

 {
 {

-CONFIGPROTO * cp = static_cast<CONFIGPROTO *>(data);
-if (cp->currParser)
+    m_running = false;
+    for (int i = 0; i < 5 && !m_stopped; ++i)

     {
     {

-    if (cp->currParser->ParseEnd(data, el) == 0)
-        {
-        cp->currParser = NULL;
-        }
+        struct timespec ts = {0, 200000000};
+        nanosleep(&ts, NULL);

     }
     }

-else
+
+    if (!m_stopped)

     {
     {

-    for (size_t i = 0; i < cp->dataParser.size(); i++)
+        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)

         {
         {

-        if (cp->dataParser[i]->ParseEnd(data, el) == 0)
-            {
+            m_errorStr = std::string("'select' is failed: '") + strerror(errno) + "'.";
+            printfd(__FILE__, "%s\n", m_errorStr.c_str());
+            m_logger(m_errorStr);

             break;
             break;

-            }

         }
         }

+        if (!m_running)
+            break;
+        if (res > 0)
+            HandleEvents(fds);
+
+        CleanupConns();

     }
     }

+    m_stopped = true;

 }
 }

-//-----------------------------------------------------------------------------
-CONFIGPROTO::CONFIGPROTO(PLUGIN_LOGGER & l)
-    : adminIP(0),
-      port(0),
-      nonstop(true),
-      state(0),
-      currAdmin(NULL),
-      logger(l),
-      listenSocket(-1),
-      admins(NULL),
-      currParser(NULL)
+
+bool CONFIGPROTO::Bind()

 {
 {

-dataParser.push_back(new PARSER_GET_SERVER_INFO);
-
-dataParser.push_back(new PARSER_GET_USERS);
-dataParser.push_back(new PARSER_GET_USER);
-dataParser.push_back(new PARSER_CHG_USER);
-dataParser.push_back(new PARSER_ADD_USER);
-dataParser.push_back(new PARSER_DEL_USER);
-dataParser.push_back(new PARSER_CHECK_USER);
-dataParser.push_back(new PARSER_SEND_MESSAGE);
-dataParser.push_back(new PARSER_AUTH_BY);
-dataParser.push_back(new PARSER_USER_INFO);
-
-dataParser.push_back(new PARSER_GET_TARIFFS);
-dataParser.push_back(new PARSER_ADD_TARIFF);
-dataParser.push_back(new PARSER_DEL_TARIFF);
-dataParser.push_back(new PARSER_CHG_TARIFF);
-
-dataParser.push_back(new PARSER_GET_ADMINS);
-dataParser.push_back(new PARSER_CHG_ADMIN);
-dataParser.push_back(new PARSER_DEL_ADMIN);
-dataParser.push_back(new PARSER_ADD_ADMIN);
-
-xmlParser = XML_ParserCreate(NULL);
-
-if (!xmlParser)
+    const hostent * he = gethostbyname(m_bindAddress.c_str());
+    if (he == NULL)

     {
     {

-    logger("Couldn't allocate memory for parser.");
-    exit(1);
+        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;

     }
 
     }
 

-}
-//-----------------------------------------------------------------------------
-CONFIGPROTO::~CONFIGPROTO()
-{
-for (size_t i = 0; i < dataParser.size(); ++i)
-    delete dataParser[i];
-XML_ParserFree(xmlParser);
-}
-//-----------------------------------------------------------------------------
-int CONFIGPROTO::ParseCommand()
-{
-std::list<std::string>::iterator n;
-int done = 0;
-char str[9];
+    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);

 
 

-if (requestList.empty())
-    return 0;
+        printfd(__FILE__, "Trying to bind to %s:%d\n", inet_ntostring(listenAddr.sin_addr.s_addr).c_str(), m_port);

 
 

-n = requestList.begin();
+        if (bind(m_listenSocket, reinterpret_cast<sockaddr *>(&listenAddr), sizeof(listenAddr)) == 0)
+            return true;

 
 

-strncpy(str, (*n).c_str(), 8);
-str[8] = 0;
+        m_errorStr = std::string("Cannot bind listen socket: '") + strerror(errno) + "'.";
+        printfd(__FILE__, "%s\n", m_errorStr.c_str());
+        m_logger(m_errorStr);

 
 

-XML_ParserReset(xmlParser, NULL);
-XML_SetElementHandler(xmlParser, ParseXMLStart, ParseXMLEnd);
-XML_SetUserData(xmlParser, this);
+        ++ptr;
+    }

 
 

-while(nonstop)
-    {
-    strncpy(str, (*n).c_str(), 8);
-    str[8] = 0;
-    size_t len = strlen(str);
+    return false;
+}

 
 

-    ++n;
-    if (n == requestList.end())
-        done = 1;
-    --n;
+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);

 
 

-    if (XML_Parse(xmlParser, (*n).c_str(), static_cast<int>(len), done) == XML_STATUS_ERROR)
-        {
-        logger("Invalid configuration request");
-        printfd(__FILE__, "Parse error at line %d:\n%s\n",
-           XML_GetCurrentLineNumber(xmlParser),
-           XML_ErrorString(XML_GetErrorCode(xmlParser)));
-        if (currParser)
-            {
-            printfd(__FILE__, "Parser reset\n");
-            currParser->Reset();
-            currParser = NULL;
-            }
+    SP::GET_SERVER_INFO::FACTORY::Register(m_registry, *m_settings, *m_users, *m_tariffs);

 
 

-        return -1;
-        }
+    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);

 
 

-    if (done)
-        return 0;
+    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);

 
 

-    ++n;
-    }
+    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);

 
 

-return 0;
+    SP::AUTH_BY::FACTORY::Register(m_registry, *m_users);
+
+    SP::USER_INFO::FACTORY::Register(m_registry, *m_users);

 }
 }

-//-----------------------------------------------------------------------------
-void CONFIGPROTO::SetAdmins(ADMINS * a)
+
+int CONFIGPROTO::MaxFD() const

 {
 {

-admins = a;
-for (size_t i = 0; i < dataParser.size(); i++)
-    dataParser[i]->SetAdmins(a);
+    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::SetUsers(USERS * u)
+
+void CONFIGPROTO::BuildFDSet(fd_set & fds) const

 {
 {

-for (size_t i = 0; i < dataParser.size(); i++)
-    dataParser[i]->SetUsers(u);
+    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::SetTariffs(TARIFFS * t)
+
+void CONFIGPROTO::CleanupConns()

 {
 {

-for (size_t i = 0; i < dataParser.size(); i++)
-    dataParser[i]->SetTariffs(t);
+    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::SetStore(STORE * s)
+
+void CONFIGPROTO::HandleEvents(const fd_set & fds)

 {
 {

-for (size_t i = 0; i < dataParser.size(); i++)
-    dataParser[i]->SetStore(s);
+    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::SetStgSettings(const SETTINGS * s)
+
+void CONFIGPROTO::AcceptConnection()

 {
 {

-for (size_t i = 0; i < dataParser.size(); i++)
-    dataParser[i]->SetStgSettings(s);
+    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() + "'.");
+    }

 }
 }

-//-----------------------------------------------------------------------------