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32 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
37 static const char sccsid[] = "@(#)look_up.c 8.1 (Berkeley) 6/6/93";
40 #include <sys/types.h>
41 #include <sys/socket.h>
42 #include <protocols/talkd.h>
52 * See if the local daemon has an invitation for us.
57 CTL_RESPONSE response;
58 CTL_RESPONSE *rp = &response;
61 /* the rest of msg was set up in get_names */
62 /* copy new style sockaddr to old, swap family (short in old) */
63 msg.ctl_addr = *(struct tsockaddr *)&ctl_addr;
64 msg.ctl_addr.sa_family = htons(ctl_addr.sin_family);
65 /* must be initiating a talk */
66 if (!look_for_invite(rp))
69 * There was an invitation waiting for us,
70 * so connect with the other (hopefully waiting) party
72 current_state = "Waiting to connect with caller";
74 if (rp->addr.sa_family != AF_INET)
75 p_error("Response uses invalid network address");
76 (void)memcpy(&addr, &rp->addr.sa_family, sizeof(addr));
77 addr.sa_family = rp->addr.sa_family;
78 addr.sa_len = sizeof(addr);
80 if (connect(sockt, &addr, sizeof(addr)) != -1)
82 } while (errno == EINTR);
83 if (errno == ECONNREFUSED) {
85 * The caller gave up, but his invitation somehow
86 * was not cleared. Clear it and initiate an
87 * invitation. (We know there are no newer invitations,
88 * the talkd works LIFO.)
90 ctl_transact(his_machine_addr, msg, DELETE, rp);
95 p_error("Unable to connect with initiator");
101 * Look for an invitation on 'machine'
104 look_for_invite(CTL_RESPONSE *rp)
106 current_state = "Checking for invitation on caller's machine";
107 ctl_transact(his_machine_addr, msg, LOOK_UP, rp);
108 /* the switch is for later options, such as multiple invitations */
109 switch (rp->answer) {
112 msg.id_num = htonl(rp->id_num);
116 /* there wasn't an invitation waiting for us */