+#if XDEBUG
+ /* check for disaster */
+ {
+ char jbuf[MAXHOSTNAMELEN];
+
+ expand("\201j", jbuf, sizeof jbuf, CurEnv);
+ if (!wordinclass(jbuf, 'w'))
+ {
+ dumpstate("daemon lost $j");
+ syslog(LOG_ALERT, "daemon process doesn't have $j in $=w; see syslog");
+ abort();
+ }
+ else if (j_has_dot && strchr(jbuf, '.') == NULL)
+ {
+ dumpstate("daemon $j lost dot");
+ syslog(LOG_ALERT, "daemon process $j lost dot; see syslog");
+ abort();
+ }
+ }
+#endif
+
+ /* wait for a connection */
+ setproctitle("accepting connections");
+ do
+ {
+ errno = 0;
+ lotherend = socksize;
+ t = accept(DaemonSocket,
+ (struct sockaddr *)&RealHostAddr, &lotherend);
+ } while (t < 0 && errno == EINTR);
+ if (t < 0)
+ {
+ syserr("getrequests: accept");
+
+ /* arrange to re-open the socket next time around */
+ (void) close(DaemonSocket);
+ DaemonSocket = -1;
+ sleep(5);
+ continue;
+ }
+
+ /*
+ ** Create a subprocess to process the mail.
+ */
+
+ if (tTd(15, 2))
+ printf("getrequests: forking (fd = %d)\n", t);
+
+ pid = fork();
+ if (pid < 0)
+ {
+ syserr("daemon: cannot fork");
+ sleep(10);
+ (void) close(t);
+ continue;
+ }
+
+ if (pid == 0)
+ {
+ char *p;
+ extern char *hostnamebyanyaddr();
+ extern void intsig();
+
+ /*
+ ** CHILD -- return to caller.
+ ** Collect verified idea of sending host.
+ ** Verify calling user id if possible here.
+ */
+
+ (void) setsignal(SIGCHLD, SIG_DFL);
+ (void) setsignal(SIGHUP, intsig);
+ (void) close(DaemonSocket);
+ DisConnected = FALSE;
+
+ setproctitle("startup with %s",
+ anynet_ntoa(&RealHostAddr));
+
+ /* determine host name */
+ p = hostnamebyanyaddr(&RealHostAddr);
+ if (strlen(p) > MAXNAME)
+ p[MAXNAME] = '\0';
+ RealHostName = newstr(p);
+ setproctitle("startup with %s", p);
+
+ if ((InChannel = fdopen(t, "r")) == NULL ||
+ (t = dup(t)) < 0 ||
+ (OutChannel = fdopen(t, "w")) == NULL)
+ {
+ syserr("cannot open SMTP server channel, fd=%d", t);
+ exit(0);
+ }
+
+ /* should we check for illegal connection here? XXX */
+#ifdef XLA
+ if (!xla_host_ok(RealHostName))
+ {
+ message("421 Too many SMTP sessions for this host");
+ exit(0);
+ }
+#endif
+
+ if (tTd(15, 2))
+ printf("getreq: returning\n");
+ return;
+ }
+
+ CurChildren++;
+
+ /* close the port so that others will hang (for a while) */
+ (void) close(t);
projects / unix-history / blobdiff