diff options
Diffstat (limited to 'usr.bin/talk/ctl.c')
| -rw-r--r-- | usr.bin/talk/ctl.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/usr.bin/talk/ctl.c b/usr.bin/talk/ctl.c new file mode 100644 index 0000000..0704b28 --- /dev/null +++ b/usr.bin/talk/ctl.c @@ -0,0 +1,122 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> + +__FBSDID("$FreeBSD$"); + +#ifndef lint +static const char sccsid[] = "@(#)ctl.c 8.1 (Berkeley) 6/6/93"; +#endif + +/* + * This file handles haggling with the various talk daemons to + * get a socket to talk to. sockt is opened and connected in + * the progress + */ + +#include <sys/types.h> +#include <sys/socket.h> + +#include <string.h> + +#include "talk.h" +#include "talk_ctl.h" + +struct sockaddr_in daemon_addr = { .sin_len = sizeof(daemon_addr), .sin_family = AF_INET }; +struct sockaddr_in ctl_addr = { .sin_len = sizeof(ctl_addr), .sin_family = AF_INET }; +struct sockaddr_in my_addr = { .sin_len = sizeof(my_addr), .sin_family = AF_INET }; + + /* inet addresses of the two machines */ +struct in_addr my_machine_addr; +struct in_addr his_machine_addr; + +u_short daemon_port; /* port number of the talk daemon */ + +int ctl_sockt; +int sockt; +int invitation_waiting = 0; + +CTL_MSG msg; + +void +open_sockt(void) +{ + socklen_t length; + + (void)memset(&my_addr, 0, sizeof(my_addr)); + my_addr.sin_family = AF_INET; + my_addr.sin_len = sizeof(my_addr); + my_addr.sin_addr = my_machine_addr; + my_addr.sin_port = 0; + sockt = socket(AF_INET, SOCK_STREAM, 0); + if (sockt == -1) + p_error("Bad socket"); + if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0) + p_error("Binding local socket"); + length = sizeof(my_addr); + if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1) + p_error("Bad address for socket"); +} + +/* open the ctl socket */ +void +open_ctl(void) +{ + socklen_t length; + + (void)memset(&ctl_addr, 0, sizeof(ctl_addr)); + ctl_addr.sin_family = AF_INET; + ctl_addr.sin_len = sizeof(my_addr); + ctl_addr.sin_port = 0; + ctl_addr.sin_addr = my_machine_addr; + ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0); + if (ctl_sockt == -1) + p_error("Bad socket"); + if (bind(ctl_sockt, + (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0) + p_error("Couldn't bind to control socket"); + length = sizeof(ctl_addr); + if (getsockname(ctl_sockt, + (struct sockaddr *)&ctl_addr, &length) == -1) + p_error("Bad address for ctl socket"); +} + +/* print_addr is a debug print routine */ +void +print_addr(struct sockaddr_in addr) +{ + int i; + + printf("addr = %lx, port = %o, family = %o zero = ", + (u_long)addr.sin_addr.s_addr, addr.sin_port, addr.sin_family); + for (i = 0; i<8;i++) + printf("%o ", (int)addr.sin_zero[i]); + putchar('\n'); +} |
