Initial revision0_29alpha2

1 files changed, 148 insertions, 0 deletions

diff --git a/mnc.c b/mnc.c
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index 0000000..9d59977
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+++ b/mnc.c
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+/*  mnc: mini-netcat - built from the ground up for LRP
+    Copyright (C) 1998  Charles P. Wright
+
+    0.0.1   6K      It works.
+    0.0.2   5K      Smaller and you can also check the exit condition if you wish.
+
+
+    19980918 Busy Boxed! Dave Cinege
+
+    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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+*/
+#include "internal.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+
+const char mnc_usage[] = 
+"mini-netcat 0.0.1 -- Open pipe to IP:port\n"
+"\tmnc [IP] [port]\n";
+
+int
+mnc_main(struct FileInfo * i, int argc, char **argv)
+{
+ 
+        int sfd;
+        int result;
+        int len;
+        int pid;
+        char ch;
+        
+        struct sockaddr_in address;
+        struct hostent *hostinfo;
+
+#ifdef SELECT
+        fd_set readfds, testfds;
+#endif
+
+        sfd = socket(AF_INET, SOCK_STREAM, 0);
+
+        hostinfo = (struct hostent *) gethostbyname(argv[1]);
+
+        if (!hostinfo)
+        {
+                exit(1);
+        }
+
+        address.sin_family = AF_INET;
+        address.sin_addr = *(struct in_addr *) *hostinfo->h_addr_list;
+        address.sin_port = htons(atoi(argv[2]));
+
+        len = sizeof(address);
+
+        result = connect(sfd, (struct sockaddr *)&address, len);
+
+        if (result < 0) 
+        {
+                exit(2);
+        }
+
+#ifdef SELECT
+        FD_ZERO(&readfds);
+        FD_SET(sfd, &readfds);
+        FD_SET(fileno(stdin), &readfds);
+
+        while(1)
+        {
+                int fd;
+                int nread;
+
+                testfds = readfds;
+
+                result = select(FD_SETSIZE, &testfds, (fd_set *) NULL, (fd_set *) NULL, (struct timeval *) 0);
+
+                if(result < 1) 
+                {
+                        exit(3);
+                }
+
+                for(fd = 0; fd < FD_SETSIZE; fd++)
+                {
+                        if(FD_ISSET(fd,&testfds))
+                        {
+                                ioctl(fd, FIONREAD, &nread);
+
+                                if (nread == 0)
+                                        exit(0);
+
+                                if(fd == sfd)
+                                {
+                                        read(sfd, &ch, 1);
+                                        write(fileno(stdout), &ch, 1);
+                                }
+                                else
+                                {
+                                        read(fileno(stdin), &ch, 1);
+                                        write(sfd, &ch, 1);
+                                }
+                        }
+                }
+        }
+#else
+        pid = fork();
+
+        if (!pid)
+        {
+                int retval;
+                retval = 1;
+                while(retval == 1)
+                {
+                        retval = read(fileno(stdin), &ch, 1);
+                        write(sfd, &ch, 1);
+                }
+        }
+        else
+        {
+                int retval;
+                retval = 1;
+                while(retval == 1)
+                {
+                        retval = read(sfd, &ch, 1);
+                        write(fileno(stdout), &ch, 1);
+                }
+        }
+
+        exit(0);
+#endif
+}