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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 */
63 /* copy new style sockaddr to old, swap family (short in old) */
64 msg.ctl_addr = *(struct osockaddr *)&ctl_addr;
65 msg.ctl_addr.sa_family = htons(ctl_addr.sin_family);
67 msg.ctl_addr = *(struct sockaddr *)&ctl_addr;
69 /* must be initiating a talk */
70 if (!look_for_invite(rp))
73 * There was an invitation waiting for us,
74 * so connect with the other (hopefully waiting) party
76 current_state = "Waiting to connect with caller";
78 if (rp->addr.sa_family != AF_INET)
79 p_error("Response uses invalid network address");
80 (void)memcpy(&addr, &rp->addr.sa_family, sizeof(addr));
81 addr.sa_family = rp->addr.sa_family;
82 addr.sa_len = sizeof(addr);
84 if (connect(sockt, &addr, sizeof(addr)) != -1)
86 } while (errno == EINTR);
87 if (errno == ECONNREFUSED) {
89 * The caller gave up, but his invitation somehow
90 * was not cleared. Clear it and initiate an
91 * invitation. (We know there are no newer invitations,
92 * the talkd works LIFO.)
94 ctl_transact(his_machine_addr, msg, DELETE, rp);
99 p_error("Unable to connect with initiator");
105 * Look for an invitation on 'machine'
108 look_for_invite(CTL_RESPONSE *rp)
110 current_state = "Checking for invitation on caller's machine";
111 ctl_transact(his_machine_addr, msg, LOOK_UP, rp);
112 /* the switch is for later options, such as multiple invitations */
113 switch (rp->answer) {
116 msg.id_num = htonl(rp->id_num);
120 /* there wasn't an invitation waiting for us */