HTTPServer.C

00001 /*!@file Devices/HttpServer.C  HTTP server for interfacing with http type devices */
00002 
00003 
00004 // //////////////////////////////////////////////////////////////////// //
00005 // The iLab Neuromorphic Vision C++ Toolkit - Copyright (C) 2000-2003   //
00006 // by the University of Southern California (USC) and the iLab at USC.  //
00007 // See http://iLab.usc.edu for information about this project.          //
00008 // //////////////////////////////////////////////////////////////////// //
00009 // Major portions of the iLab Neuromorphic Vision Toolkit are protected //
00010 // under the U.S. patent ``Computation of Intrinsic Perceptual Saliency //
00011 // in Visual Environments, and Applications'' by Christof Koch and      //
00012 // Laurent Itti, California Institute of Technology, 2001 (patent       //
00013 // pending; application number 09/912,225 filed July 23, 2001; see      //
00014 // http://pair.uspto.gov/cgi-bin/final/home.pl for current status).     //
00015 // //////////////////////////////////////////////////////////////////// //
00016 // This file is part of the iLab Neuromorphic Vision C++ Toolkit.       //
00017 //                                                                      //
00018 // The iLab Neuromorphic Vision C++ Toolkit is free software; you can   //
00019 // redistribute it and/or modify it under the terms of the GNU General  //
00020 // Public License as published by the Free Software Foundation; either  //
00021 // version 2 of the License, or (at your option) any later version.     //
00022 //                                                                      //
00023 // The iLab Neuromorphic Vision C++ Toolkit is distributed in the hope  //
00024 // that it will be useful, but WITHOUT ANY WARRANTY; without even the   //
00025 // implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      //
00026 // PURPOSE.  See the GNU General Public License for more details.       //
00027 //                                                                      //
00028 // You should have received a copy of the GNU General Public License    //
00029 // along with the iLab Neuromorphic Vision C++ Toolkit; if not, write   //
00030 // to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,   //
00031 // Boston, MA 02111-1307 USA.                                           //
00032 // //////////////////////////////////////////////////////////////////// //
00033 //
00034 // Primary maintainer for this file: Lior Elazary
00035 // $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/Devices/HTTPServer.C $
00036 // $Id: HTTPServer.C 12962 2010-03-06 02:13:53Z irock $
00037 //
00038 
00039 #include <sys/socket.h>
00040 #include <netinet/in.h>
00041 #include <stdio.h>
00042 #include <unistd.h>
00043 #include <stdlib.h>
00044 #include <string.h>
00045 #include <pthread.h>
00046 #include <signal.h>
00047 
00048 #include "Devices/HTTPServer.H"
00049 
00050 #include "Component/OptionManager.H"
00051 #include "Component/ModelOptionDef.H"
00052 #include "Devices/DeviceOpts.H"
00053 #include "Util/log.H"
00054 #include "rutz/unixcall.h" // for rutz::unixcall::get_file_user_pid()
00055 
00056 extern const ModelOptionCateg MOC_HTTP;
00057 
00058 const ModelOptionCateg MOC_HTTP = {
00059   MOC_SORTPRI_2,   "HttpServer-Related Options" };
00060 
00061 static const ModelOptionDef OPT_HttpServerPort =
00062   { MODOPT_ARG(uint), "ServerPort", &MOC_HTTP, OPTEXP_CORE,
00063     "Port number of the server to use ",
00064     "HttpServer-port", '\0', "<portnum>", "80" };
00065 
00066 
00067 // ######################################################################
00068 HttpServer::HttpServer(OptionManager& mgr,
00069                const std::string& descrName,
00070                const std::string& tagName) :
00071   ModelComponent(mgr, descrName, tagName),
00072   itsPort(&OPT_HttpServerPort, this),
00073   itsSocket(-1)
00074 {
00075 
00076 }
00077 
00078 // ######################################################################
00079 HttpServer::~HttpServer(void)
00080 {
00081         LINFO("Clossing connections");
00082         close(itsSocket);
00083 
00084 }
00085 
00086 
00087 // ######################################################################
00088 void HttpServer::start1()
00089 {
00090         //Start the http server
00091 
00092    struct sockaddr_in servaddr;
00093 
00094          /* Avoid possible SIGPIPE when sending data */
00095          signal(SIGPIPE, SIG_IGN);
00096 
00097    itsSocket=socket(AF_INET,SOCK_STREAM,0);
00098          if (itsSocket < 0)
00099                  LFATAL("Can not create socket\n");
00100 
00101    bzero(&servaddr,sizeof(servaddr));
00102    servaddr.sin_family = AF_INET;
00103    servaddr.sin_addr.s_addr=htonl(INADDR_ANY);
00104    servaddr.sin_port=htons(itsPort.getVal());
00105 
00106          //Set non blocking
00107          long arg;
00108          if( (arg = fcntl(itsSocket, F_GETFL, NULL)) < 0)
00109                  LFATAL("Error fcntl(..., F_GETFL)\n");
00110          arg |= O_NONBLOCK;
00111 
00112          if( fcntl(itsSocket, F_SETFL, arg) < 0)
00113                  LFATAL("Error fcntl(..., F_SETFL)\n");
00114 
00115 
00116    if (bind(itsSocket,(struct sockaddr *)&servaddr,sizeof(servaddr)) < 0)
00117                  LFATAL("Can not bind to port: %i\n", itsPort.getVal());
00118 
00119    if (listen(itsSocket,1024) < 0)
00120                  LFATAL("Can not listen to port\n");
00121 }
00122 
00123 // ######################################################################
00124 void HttpServer::stop2()
00125 {
00126         close(itsSocket);
00127 }
00128 
00129 int HttpServer::acceptConn()
00130 {
00131         struct sockaddr_in cliaddr;
00132         socklen_t clilen=sizeof(cliaddr);
00133 
00134         return accept(itsSocket,(struct sockaddr *)&cliaddr,&clilen);
00135 }
00136 
00137 int HttpServer::writeData(int clientFd, std::string& msg)
00138 {
00139         return write(clientFd, msg.c_str(), msg.size());
00140 }
00141 
00142 
00143 // ######################################################################
00144 /* So things look consistent in everyone's emacs... */
00145 /* Local Variables: */
00146 /* indent-tabs-mode: nil */
00147 /* End: */
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