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223 lines
7.0 KiB
223 lines
7.0 KiB
////////////////////////////////////////////////////////////////////////////
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// Copyright KAZ 2021 //
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// //
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// contact (at) kaz.bzh //
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// //
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// This software is a filter to shrink email by attachment extraction. //
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// //
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// This software is governed by the CeCILL-B license under French law and //
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// abiding by the rules of distribution of free software. You can use, //
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// modify and/or redistribute the software under the terms of the //
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// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
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// URL "http://www.cecill.info". //
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// //
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// As a counterpart to the access to the source code and rights to copy, //
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// modify and redistribute granted by the license, users are provided //
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// only with a limited warranty and the software's author, the holder of //
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// the economic rights, and the successive licensors have only limited //
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// liability. //
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// //
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// In this respect, the user's attention is drawn to the risks associated //
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// with loading, using, modifying and/or developing or reproducing the //
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// software by the user in light of its specific status of free software, //
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// that may mean that it is complicated to manipulate, and that also //
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// therefore means that it is reserved for developers and experienced //
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// professionals having in-depth computer knowledge. Users are therefore //
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// encouraged to load and test the software's suitability as regards //
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// their requirements in conditions enabling the security of their //
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// systems and/or data to be ensured and, more generally, to use and //
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// operate it in the same conditions as regards security. //
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// //
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// The fact that you are presently reading this means that you have had //
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// knowledge of the CeCILL-B license and that you accept its terms. //
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////////////////////////////////////////////////////////////////////////////
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#include <boost/program_options.hpp>
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#include <fcntl.h>
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#include <map>
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#include <netinet/in.h>
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#include <poll.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string>
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#include <sys/socket.h>
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#include <unistd.h>
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#include <vector>
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#include "kazDebug.hpp"
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#include "kazMisc.hpp"
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using namespace std;
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using namespace boost;
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using namespace boost::program_options;
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using namespace kaz;
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#define CONSOLE(expr) {if (!quietFlag) {std::cerr << Log::getLocalTimeStr () << " " << expr << std::endl << std::flush; }}
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// ================================================================================
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const string LAST_VERSION_NUM ("3.0");
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const string LAST_VERSION_DATE ("2024-01-01");
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const string LAST_VERSION (LAST_VERSION_NUM+" "+LAST_VERSION_DATE+" server");
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#define PORT 8080
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const string BASH ("/bin/bash");
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const string FILTER_CMD ("src/bash/testCopyInOut.sh");
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// ================================================================================
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static options_description mainDescription ("Main options", getCols ());
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static options_description hide ("Hidded options", getCols ());
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static const char *prog = NULL;
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// ================================================================================
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void
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usage (const string &msg = "", const bool &hidden = false) {
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if (!msg.empty ()) {
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cout << msg << endl;
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exit (1);
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}
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cout << endl
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<< "Usage: " << endl
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<< " " << prog << " [-p port] [-f filterFileName.sh]" << endl
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<< endl << mainDescription
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<< endl;
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if (hidden)
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cout << hide << endl;
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exit (0);
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}
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void
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version () {
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cout << LAST_VERSION << " KAZ team production (https://kaz.bzh/)" << endl;
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exit (0);
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}
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// ================================================================================
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int
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main (int argc, const char *argv[], char **envp) {
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// uncomment next line in case of debug parse options
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// Log::debug = true;
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DEF_LOG ("main:", LAST_VERSION);
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prog = argv [0];
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bool
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helpFlag (false),
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versionFlag (false),
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quietFlag (false),
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useTheForceLuke (false),
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debugFlag (false);
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int port (PORT);
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string filterFileName (FILTER_CMD);
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try {
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mainDescription.add_options ()
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("help,h", bool_switch (&helpFlag), "produce this help message")
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("version,v", bool_switch (&versionFlag), "display version information")
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("quiet,q", bool_switch (&quietFlag), "quiet mode")
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("port,p", value<int> (&port)->default_value (port), "server port number")
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("filter,f", value<string> (&filterFileName)->default_value (filterFileName), "filter file name script")
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;
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hide.add_options ()
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("useTheForceLuke", bool_switch (&useTheForceLuke), "display hidded options")
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("debug,g", bool_switch (&debugFlag), "debug mode")
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;
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options_description cmd ("All options");
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cmd.add (mainDescription).add (hide).add_options ();
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variables_map vm;
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store (parse_command_line(argc, argv, cmd), vm);
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notify (vm);
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if (debugFlag) {
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#ifdef DISABLE_LOG
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cerr << "No debug option available (was compiled with -DDISABLE_LOG)" << endl;
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#endif
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}
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Log::debug = debugFlag;
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if (useTheForceLuke)
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usage ("", true);
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if (versionFlag)
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version ();
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if (helpFlag)
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usage ();
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} catch (std::exception &e) {
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cerr << "error: " << e.what() << endl;
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usage ();
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return 1;
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} catch (...) {
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cerr << "Exception of unknown type!" << endl;
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return 1;
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}
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struct sockaddr_in address;
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int opt = 1;
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socklen_t addrlen = sizeof (address);
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LOG ("create socket");
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int serverSocket (socket (AF_INET, SOCK_STREAM, 0));
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if (serverSocket < 0) {
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perror ("socket failed");
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exit (EXIT_FAILURE);
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}
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LOG ("set socket options");
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if (setsockopt (serverSocket, SOL_SOCKET,
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SO_REUSEADDR | SO_REUSEPORT, &opt,
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sizeof (opt))) {
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perror ("setsockopt");
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exit (EXIT_FAILURE);
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}
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address.sin_family = AF_INET;
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address.sin_addr.s_addr = INADDR_ANY;
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address.sin_port = htons (port);
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LOG ("bind");
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if (bind (serverSocket, (struct sockaddr*)&address, sizeof (address)) < 0) {
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perror ("bind failed");
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exit (EXIT_FAILURE);
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}
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LOG ("listen");
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if (listen (serverSocket, 3) < 0) {
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perror ("listen");
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exit (EXIT_FAILURE);
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}
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CONSOLE ("Server started on port " << port);
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for (;;) {
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LOG ("accept");
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int clientSocket (accept (serverSocket, (struct sockaddr*) &address, &addrlen));
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if (clientSocket < 0) {
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perror ("accept");
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// XXX ne pas quitter
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exit (EXIT_FAILURE);
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}
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char *command[] = {const_cast<char *> (BASH.c_str ()),
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const_cast<char *> (filterFileName.c_str ()), NULL};
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switch (fork ()) {
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case -1:
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perror ("fork");
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exit (EXIT_FAILURE);
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case 0:
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CONSOLE ("New request");
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close (STDOUT_FILENO);
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close (STDIN_FILENO);
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dup2 (clientSocket, STDIN_FILENO);
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dup2 (clientSocket, STDOUT_FILENO);
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execve (BASH.c_str (), command, envp);
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perror ("execve");
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break;
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default:
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close (clientSocket);
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break;
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}
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}
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// XXX condition de sortie ?
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close (serverSocket);
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return 0;
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}
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// ================================================================================
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