Fossil

** As new connections arrive, fork a child and let child return
** out of this procedure call.  The child will handle the request.
** The parent never returns from this procedure.
**
** Return 0 to each child as it runs.  If unable to establish a
** listening socket, return non-zero.
*/
int cgi_http_server(int mnPort, int mxPort, char *zBrowser){
#ifdef __MINGW32__
  /* Use win32_http_server() instead */
  exit(1);
#else
  int listener;                /* The server socket */
  int connection;              /* A socket for each individual connection */
  fd_set readfds;              /* Set of file descriptors for select() */
  size_t lenaddr;              /* Length of the inaddr structure */
  int child;                   /* PID of the child process */
  int nchildren = 0;           /* Number of child processes */
  struct timeval delay;        /* How long to wait inside select() */
  struct sockaddr_in inaddr;   /* The socket address */
  int opt = 1;                 /* setsockopt flag */
  int iPort = mnPort;

  while( iPort<mxPort ){
    memset(&inaddr, 0, sizeof(inaddr));
    inaddr.sin_family = AF_INET;
    inaddr.sin_addr.s_addr = INADDR_ANY;
    inaddr.sin_port = htons(iPort);
    listener = socket(AF_INET, SOCK_STREAM, 0);
    if( listener<0 ){
      iPort++;
      continue;
    }

    /* if we can't terminate nicely, at least allow the socket to be reused */
    setsockopt(listener,SOL_SOCKET,SO_REUSEADDR,&opt,sizeof(opt));

    if( bind(listener, (struct sockaddr*)&inaddr, sizeof(inaddr))<0 ){
      close(listener);
      iPort++;
      continue;
    }
    break;
  }
  if( iPort>mxPort ){
    if( mnPort==mxPort ){
      fossil_fatal("unable to open listening socket on ports %d", mnPort);
    }else{
      fossil_fatal("unable to open listening socket on any"
                   " ports %d..%d", mnPort, mxPort);
    }
  }
  if( iPort>mxPort ) return 1;
  listen(listener,10);
  if( iPort>mnPort ){
    printf("Listening for HTTP requests on TCP port %d\n", iPort);
    fflush(stdout);
  }
  if( zBrowser ){
    zBrowser = mprintf(zBrowser, iPort);
    system(zBrowser);
  }
  while( 1 ){
    if( nchildren>MAX_PARALLEL ){
      /* Slow down if connections are arriving too fast */
      sleep( nchildren-MAX_PARALLEL );
    }

** The repository argument may be omitted if the working directory is
** within an open checkout.
**
** The "ui" command automatically starts a web browser after initializing
** the web server.
*/
void cmd_webserver(void){
  int iPort, mxPort;
  const char *zPort;
  char *zBrowser;
  char *zBrowserCmd = 0;

  g.thTrace = find_option("th-trace", 0, 0)!=0;
  if( g.thTrace ){
    blob_zero(&g.thLog);
  }
  zPort = find_option("port", "P", 1);
  if( g.argc!=2 && g.argc!=3 ) usage("?REPOSITORY?");
  if( g.argc==2 ){
    db_must_be_within_tree();
  }else{
    db_open_repository(g.argv[2]);
  }
  if( zPort ){
    iPort = mxPort = atoi(zPort);
  }else{
    iPort = db_get_int("http-port", 8080);
    mxPort = iPort+100;
  }
#ifndef __MINGW32__
  /* Unix implementation */
  if( g.argv[1][0]=='u' ){
#if !defined(__DARWIN__) && !defined(__APPLE__)
    zBrowser = db_get("web-browser", "firefox");
#else
    zBrowser = db_get("web-browser", "open");
#endif
    zBrowserCmd = mprintf("%s http://localhost:%%d/ &", zBrowser);
  }
  db_close();
  if( cgi_http_server(iPort, mxPort, zBrowserCmd) ){
    fossil_fatal("unable to listen on TCP socket %d", iPort);
  }
  g.httpIn = stdin;
  g.httpOut = stdout;
  if( g.fHttpTrace ){
    fprintf(stderr, "====== SERVER pid %d =======\n", getpid());
  }
  g.cgiPanic = 1;
  if( g.argc==2 ){
    db_must_be_within_tree();
  }else{
    db_open_repository(g.argv[2]);
  }
  cgi_handle_http_request(0);
  process_one_web_page();
#else
  /* Win32 implementation */
  if( g.argv[1][0]=='u' ){
    zBrowser = db_get("web-browser", "start");
    zBrowserCmd = mprintf("%s http://127.0.0.1:%%d/", zBrowser);
  }
  db_close();
  win32_http_server(iPort, mxPort, zBrowserCmd);
#endif
}

  free(p);
}

/*
** Start a listening socket and process incoming HTTP requests on
** that socket.
*/
void win32_http_server(int mnPort, int mxPort, char *zBrowser){
  WSADATA wd;
  SOCKET s;
  SOCKADDR_IN addr;
  int idCnt = 0;
  int iPort = mnPort;

  if( WSAStartup(MAKEWORD(1,1), &wd) ){
    fossil_fatal("unable to initialize winsock");
  }
  while( iPort<mxPort ){
    s = socket(AF_INET, SOCK_STREAM, 0);
    if( s==INVALID_SOCKET ){
      fossil_fatal("unable to create a socket");
    }
    addr.sin_family = AF_INET;
    addr.sin_port = htons(iPort);
    addr.sin_addr.s_addr = htonl(INADDR_ANY);
    if( bind(s, (struct sockaddr*)&addr, sizeof(addr))==SOCKET_ERROR ){
      closesocket(s);
      iPort++;
      continue;
    }
    if( listen(s, SOMAXCONN)==SOCKET_ERROR ){
      closesocket(s);
      iPort++;
      continue;
    }
    break;
  }
  if( iPort>mxPort ){
    if( mnPort==mxPort ){
      fossil_fatal("unable to open listening socket on ports %d", mnPort);
    }else{
      fossil_fatal("unable to open listening socket on any"
                   " ports %d..%d", mnPort, mxPort);
    }
  }
  zTempPrefix = mprintf("fossil_server_P%d_", iPort);
  printf("Listening for HTTP requests on TCP port %d\n", iPort);
  if( zBrowser ){
    zBrowser = mprintf(zBrowser, iPort);
    printf("Launch webbrowser: %s\n", zBrowser);
    system(zBrowser);
  }
  printf("Type Ctrl-C to stop the HTTP server\n");
  for(;;){
    SOCKET client;
    SOCKADDR_IN client_addr;