#include "./def.h"#include <sys/types.h>#ifdef WINDOWS#include <windows.h>#else#include <unistd.h>#include <signal.h>#endif#include <sys/time.h>#include <time.h>#include <string.h>#include <stdio.h>#include <stdlib.h>#include "btconfig.h"#include "btcontent.h"#include "downloader.h"#include "peerlist.h"#include "tracker.h"#include "ctcs.h"#include "./config.h"#include <fcntl.h>#ifndef WINDOWS#include "sigint.h"#endifvoid usage();int param_check(int argc, char **argv);#ifdef WINDOWSint APIENTRY WinMain(HINSTANCE hInstance,                     HINSTANCE hPrzevInstance,                     LPSTR     lpCmdLine,                     int       nCmdShow){}#elsevoid Random_init(){  struct timeval tv;   gettimeofday(&tv,(struct timezone*) 0);  unsigned int seed = tv.tv_usec + tv.tv_sec + getpid();  srandom(seed);}int main(int argc, char **argv){  Random_init();  arg_user_agent = new char[MAX_PF_LEN];  strcpy(arg_user_agent,PEER_PFX);      if( argc < 2 || param_check(argc,argv) < 0 ){    usage();    exit(1);  }  if( arg_flg_make_torrent ){    if( !arg_announce ){ fprintf(stderr,"please use -u to specify a announce url!\n"); exit(1);}    if( !arg_save_as ){ fprintf(stderr,"please use -s to specify a metainfo file name!\n"); exit(1);}    if( BTCONTENT.InitialFromFS(arg_metainfo_file, arg_announce,  arg_piece_length) < 0 ||        BTCONTENT.CreateMetainfoFile(arg_save_as) < 0){      fprintf(stderr,"create metainfo failed.\n");      exit(1);    }    printf("create metainfo file %s successful.\n", arg_save_as);    exit(0);  }    if( BTCONTENT.InitialFromMI(arg_metainfo_file, arg_save_as) < 0){    fprintf(stderr,"error,initial meta info failed.\n");    exit(1);  }  if( !arg_flg_exam_only && !arg_flg_check_only){    if(WORLD.Initial_ListenPort() < 0){      fprintf(stderr,"warn, you couldn't accept connection.\n");    }    if( arg_ctcs ) CTCS.Initial();        Tracker.Initial();        signal(SIGPIPE,SIG_IGN);    signal(SIGINT,sig_catch);    signal(SIGTERM,sig_catch);    Downloader();  }  if( cfg_cache_size ) BTCONTENT.FlushCache();  if( arg_bitfield_file ) BTCONTENT.pBF->WriteToFile(arg_bitfield_file);  WORLD.CloseAll();  if (arg_runtime_status_fd >0) {    close(arg_runtime_status_fd);    arg_runtime_status_fd = -1;  }  exit(0);}#endifint param_check(int argc, char **argv){  int c, l;  char *s;  char *arg_runtime_status_file;  while ( ( c = getopt(argc,argv,"b:cC:D:e:E:fi:l:M:m:n:P:p:s:S:tu:U:vxz:hH")) != -1)    switch( c ){    case 'b':      arg_bitfield_file = new char[strlen(optarg) + 1];#ifndef WINDOWS      if( !arg_bitfield_file ) return -1;#endif      strcpy(arg_bitfield_file, optarg);      break;    case 'i':                  // listen on ip XXXX      cfg_listen_ip = inet_addr(optarg);      break;    case 'p':			// listen on Port XXXX      cfg_listen_port = atoi(optarg);      break;    case 's':			// Save as FILE/DIR NAME      if( arg_save_as ) return -1;      arg_save_as = new char[strlen(optarg) + 1];#ifndef WINDOWS      if( !arg_save_as ) return -1;#endif      strcpy(arg_save_as,optarg);      break;    case 'e':			// Exit while complete      cfg_seed_hours = atoi(optarg);      break;    case 'E':			// target seed ratio      cfg_seed_ratio = atof(optarg);      break;    case 'c':			// Check exist only      arg_flg_check_only = 1;      break;    case 'C':      cfg_cache_size = atoi(optarg);      break;          case 'M':			// Max peers      cfg_max_peers = atoi(optarg);      if( cfg_max_peers > 1000 ||          cfg_max_peers < 20){        return -1;      }      break;          case 'm':			// Min peers      cfg_min_peers = atoi(optarg);      if( cfg_min_peers > 1000 ||          cfg_min_peers < 1){        return -1;      }      break;    case 'z':			// slice size      cfg_req_slice_size = atoi(optarg) * 1024;      if( cfg_req_slice_size < 1024 || cfg_req_slice_size > 128*1024 )        return -1;      break;    case 'n':                  // Which file download      arg_file_to_download = atoi(optarg);    break;    case 'f':			// force seed mode, skip sha1 check when startup.      arg_flg_force_seed_mode = 1;      break;          case 'D':      cfg_max_bandwidth_down = (int)(strtod(optarg, NULL) * 1024);      break;    case 'U':      cfg_max_bandwidth_up = (int)(strtod(optarg, NULL) * 1024);      break;    case 'P':      l = strlen(optarg);      if (l > MAX_PF_LEN) {printf("-P arg must be 8 or less characters\n"); exit(1);}      if (l == 1 && *optarg == '-') *arg_user_agent = (char) 0;      else strcpy(arg_user_agent,optarg);      break;     // BELLOW OPTIONS USED FOR CREATE TORRENT.    case 'u':			// Announce url      if( arg_announce ) return -1;      arg_announce = new char[strlen(optarg) + 1];      strcpy(arg_announce, optarg);      break;    case 't':			// make Torrent      arg_flg_make_torrent = 1;      break;    case 'l':			// piece Length (default 262144)      arg_piece_length = atoi(optarg);      if( arg_piece_length < 65536 ||          arg_piece_length > 1310720 ){        // warn message:        // piece length range is 65536 =>> 1310720        return -1;      }      break;     // ABOVE OPTIONS USED FOR CREATE TORRENT.    case 'x':      arg_flg_exam_only = 1;      break;    case 'S':			// CTCS server      if( arg_ctcs ) return -1;      arg_ctcs = new char[strlen(optarg) + 1];      if( !strchr(optarg, ':') ) return -1;      strcpy(arg_ctcs, optarg);      break;    case 'v':      arg_verbose = 1;      break;    case 'h':    case 'H':    default:      //unknow option.      return -1;    }  argc -= optind; argv += optind;  if( cfg_min_peers >= cfg_max_peers ) cfg_min_peers = cfg_max_peers - 1;  if( argc != 1 ) return -1;  arg_metainfo_file = new char[strlen(*argv) + 1];  arg_runtime_status_file = new char[strlen(*argv)+10];#ifndef WINDOWS  if( !arg_metainfo_file ) return -1;#endif  strcpy(arg_metainfo_file, *argv);  if (!arg_runtime_status_file) {    fprintf(stderr, "Cannot save runtime information.\n");  } else {    sprintf(arg_runtime_status_file, "%s.runtime", arg_metainfo_file);    arg_runtime_status_fd = open(arg_runtime_status_file, O_RDWR|O_CREAT|O_TRUNC, 0666);    if (arg_runtime_status_fd <= 0)      printf("\n*** open file %s fail!\n", arg_runtime_status_file);  }  delete []arg_runtime_status_file;  return 0;}void usage(){  fprintf(stderr,"%s	Original code Copyright: YuHong(992126018601033)",PACKAGE_STRING);  fprintf(stderr,"\nWARNING: THERE IS NO WARRANTY FOR CTorrent. USE AT YOUR OWN RISK!!!\n");  fprintf(stderr,"\nGeneric Options:\n");  fprintf(stderr,"-h/-H\t\tShow this message.\n");  fprintf(stderr,"-x\t\tDecode metainfo(torrent) file only, don't download.\n");  fprintf(stderr,"-c\t\tCheck exist only. don't download.\n");  fprintf(stderr,"-v\t\tVerbose output (for debugging).\n");  fprintf(stderr,"\nDownload Options:\n");  fprintf(stderr,"-e int\t\tExit while seed <int> hours later. (default 72 hours)\n");  fprintf(stderr,"-E num\t\tExit after seeding to <num> ratio (UL:DL).\n");  fprintf(stderr,"-i ip\t\tListen for connection on ip. (default all ip's)\n");  fprintf(stderr,"-p port\t\tListen port. (default 2706 -> 2106)\n");  fprintf(stderr,"-s save_as\tSave file/directory/metainfo as... \n");  fprintf(stderr,"-C cache_size\tCache size,unit MB. (default 16MB)\n");  fprintf(stderr,"-f\t\tForce seed mode. skip hash check at startup.\n");  fprintf(stderr,"-b bf_filename\tBit field filename. (use it carefully)\n");  fprintf(stderr,"-M max_peers\tMax peers count.\n");  fprintf(stderr,"-m min_peers\tMin peers count.\n");  fprintf(stderr,"-z slice_size\tDownload slice/block size, unit KB. (default 16, max 128).\n");  fprintf(stderr,"-n file_number\tWhich file download.\n");  fprintf(stderr,"-D rate\t\tMax bandwidth down (unit KB/s)\n");  fprintf(stderr,"-U rate\t\tMax bandwidth up (unit KB/s)\n");  fprintf(stderr,"-P peer_id\tSet Peer ID ["PEER_PFX"]\n");  fprintf(stderr,"-S host:port\tUse CTCS server\n");  fprintf(stderr,"\nMake metainfo(torrent) file Options:\n");  fprintf(stderr,"-t\t\tWith make torrent. must specify this option.\n");  fprintf(stderr,"-u url\t\tTracker's url.\n");  fprintf(stderr,"-l piece_len\tPiece length.(default 262144)\n");  fprintf(stderr,"\neg.\n");  fprintf(stderr,"hong> ctorrent -s new_filename -e 12 -C 32 -p 6881 eg.torrent\n\n");  fprintf(stderr,"home page: http://ctorrent.sourceforge.net/\n");  fprintf(stderr,"see also: http://www.rahul.net/dholmes/ctorrent/\n");  fprintf(stderr,"bug report: %s\n",PACKAGE_BUGREPORT);  fprintf(stderr,"original author: bsdi@sina.com\n\n");}