1 /* vi: set sw=4 ts=4: */
2 /* nc: mini-netcat - built from the ground up for LRP
3 Copyright (C) 1998 Charles P. Wright
6 0.0.2 5K Smaller and you can also check the exit condition if you wish.
9 19980918 Busy Boxed! Dave Cinege
10 19990512 Uses Select. Charles P. Wright
11 19990513 Fixes stdin stupidity and uses buffers. Charles P. Wright
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 #warning This applet has moved to netkit-tiny. After BusyBox 0.49, this
30 #warning applet will be removed from BusyBox. All maintainence efforts
31 #warning should be done in the netkit-tiny source tree.
38 #include <sys/types.h>
39 #include <sys/socket.h>
40 #include <netinet/in.h>
41 #include <arpa/inet.h>
44 #include <sys/ioctl.h>
46 int nc_main(int argc, char **argv)
51 struct sockaddr_in address;
52 struct hostent *hostinfo;
54 fd_set readfds, testfds;
58 if (argc < 2 || **argv == '-') {
62 if ((sfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
63 perror_msg_and_die("socket");
65 if ((hostinfo = gethostbyname(*argv)) == NULL)
66 error_msg_and_die("cannot resolve %s\n", *argv);
68 address.sin_family = AF_INET;
69 address.sin_addr = *(struct in_addr *) *hostinfo->h_addr_list;
70 address.sin_port = htons(atoi(*(++argv)));
72 if (connect(sfd, (struct sockaddr *) &address, sizeof(address)) < 0)
73 perror_msg_and_die("connect");
76 FD_SET(sfd, &readfds);
77 FD_SET(STDIN_FILENO, &readfds);
86 if (select(FD_SETSIZE, &testfds, NULL, NULL, NULL) < 0)
87 perror_msg_and_die("select");
89 for (fd = 0; fd < FD_SETSIZE; fd++) {
90 if (FD_ISSET(fd, &testfds)) {
91 if ((nread = safe_read(fd, buf, sizeof(buf))) < 0)
92 perror_msg_and_die("read");
104 if (full_write(ofd, buf, nread) < 0)
105 perror_msg_and_die("write");