diff options
Diffstat (limited to 'usr.bin/talk/look_up.c')
| -rw-r--r-- | usr.bin/talk/look_up.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/usr.bin/talk/look_up.c b/usr.bin/talk/look_up.c deleted file mode 100644 index 9c335ae..0000000 --- a/usr.bin/talk/look_up.c +++ /dev/null @@ -1,115 +0,0 @@ -/* - * 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. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 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. - */ - -#ifndef lint -static char sccsid[] = "@(#)look_up.c 8.1 (Berkeley) 6/6/93"; -#endif /* not lint */ - -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <protocols/talkd.h> -#include <errno.h> -#include "talk_ctl.h" -#include "talk.h" - -/* - * See if the local daemon has an invitation for us. - */ -check_local() -{ - CTL_RESPONSE response; - register CTL_RESPONSE *rp = &response; - - /* the rest of msg was set up in get_names */ -#ifdef MSG_EOR - /* copy new style sockaddr to old, swap family (short in old) */ - msg.ctl_addr = *(struct osockaddr *)&ctl_addr; - msg.ctl_addr.sa_family = htons(ctl_addr.sin_family); -#else - msg.ctl_addr = *(struct sockaddr *)&ctl_addr; -#endif - /* must be initiating a talk */ - if (!look_for_invite(rp)) - return (0); - /* - * There was an invitation waiting for us, - * so connect with the other (hopefully waiting) party - */ - current_state = "Waiting to connect with caller"; - do { - if (rp->addr.sa_family != AF_INET) - p_error("Response uses invalid network address"); - errno = 0; - if (connect(sockt, - (struct sockaddr *)&rp->addr, sizeof (rp->addr)) != -1) - return (1); - } while (errno == EINTR); - if (errno == ECONNREFUSED) { - /* - * The caller gave up, but his invitation somehow - * was not cleared. Clear it and initiate an - * invitation. (We know there are no newer invitations, - * the talkd works LIFO.) - */ - ctl_transact(his_machine_addr, msg, DELETE, rp); - close(sockt); - open_sockt(); - return (0); - } - p_error("Unable to connect with initiator"); - /*NOTREACHED*/ -} - -/* - * Look for an invitation on 'machine' - */ -look_for_invite(rp) - CTL_RESPONSE *rp; -{ - struct in_addr machine_addr; - - current_state = "Checking for invitation on caller's machine"; - ctl_transact(his_machine_addr, msg, LOOK_UP, rp); - /* the switch is for later options, such as multiple invitations */ - switch (rp->answer) { - - case SUCCESS: - msg.id_num = htonl(rp->id_num); - return (1); - - default: - /* there wasn't an invitation waiting for us */ - return (0); - } -} |
