1 /* mnc: mini-netcat - built from the ground up for LRP
2 Copyright (C) 1998 Charles P. Wright
5 0.0.2 5K Smaller and you can also check the exit condition if you wish.
8 19980918 Busy Boxed! Dave Cinege
9 19990512 Uses Select. Charles P. Wright
10 19990513 Fixes stdin stupidity and uses buffers. Charles P. Wright
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
32 #include <sys/types.h>
33 #include <sys/socket.h>
34 #include <netinet/in.h>
35 #include <arpa/inet.h>
38 #include <sys/ioctl.h>
42 static const char mnc_usage[] =
44 "mini-netcat opens a pipe to IP:port\n";
47 mnc_main(int argc, char **argv)
54 struct sockaddr_in address;
55 struct hostent *hostinfo;
57 fd_set readfds, testfds;
59 if (argc<=1 || **(argv+1) == '-' ) {
65 sfd = socket(AF_INET, SOCK_STREAM, 0);
67 hostinfo = (struct hostent *) gethostbyname(*argv);
74 address.sin_family = AF_INET;
75 address.sin_addr = *(struct in_addr *) *hostinfo->h_addr_list;
76 address.sin_port = htons(atoi(*(++argv)));
78 len = sizeof(address);
80 result = connect(sfd, (struct sockaddr *)&address, len);
88 FD_SET(sfd, &readfds);
89 FD_SET(fileno(stdin), &readfds);
99 result = select(FD_SETSIZE, &testfds, (fd_set *) NULL, (fd_set *) NULL, (struct timeval *) 0);
106 for(fd = 0; fd < FD_SETSIZE; fd++)
108 if(FD_ISSET(fd,&testfds))
113 ioctl(fd, FIONREAD, &nread);
119 ofd = fileno(stdout);
130 rn = (BUFSIZE < nread - trn) ? BUFSIZE : nread - trn;