From b600c0d558b0e1a6e4ad44dc59ba5036da412075 Mon Sep 17 00:00:00 2001
From: John Kohl <jtkohl@mit.edu>
Date: Mon, 23 Apr 1990 16:58:45 +0000
Subject: [PATCH] *** empty log message ***

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@560 dc483132-0cff-0310-8789-dd5450dbe970
---
 src/kdc/network.c | 141 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 src/kdc/network.c

diff --git a/src/kdc/network.c b/src/kdc/network.c
new file mode 100644
index 000000000..290bebaad
--- /dev/null
+++ b/src/kdc/network.c
@@ -0,0 +1,141 @@
+/*
+ * $Source$
+ * $Author$
+ *
+ * Copyright 1990 by the Massachusetts Institute of Technology.
+ *
+ * For copying and distribution information, please see the file
+ * <krb5/copyright.h>.
+ *
+ * Network code for Kerberos v5 KDC.
+ */
+
+#if !defined(lint) && !defined(SABER)
+static char rcsid_network_c[] =
+"$Id$";
+#endif	/* !lint & !SABER */
+
+#include <krb5/copyright.h>
+#include <krb5/osconf.h>
+#include <krb5/krb5.h>
+#include <krb5/ext-proto.h>
+#include <stdio.h>
+#include <krb5/libos-proto.h>
+#include <errno.h>
+#include <com_err.h>
+#include <krb5/kdb.h>
+#include "kdc_util.h"
+#include "extern.h"
+
+#ifdef KRB5_USE_INET
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+extern char *krb5_kdc_udp_portname;
+extern int errno;
+
+static int udp_port_fd = -1;
+
+void
+setup_network()
+{
+    struct servent *sp;
+    struct sockaddr_in sin;
+
+    sp = getservbyname(krb5_kdc_udp_portname, "udp");
+    if (!sp) {
+	fprintf(stderr, "XXX: %s/udp service unknown\n",
+		krb5_kdc_udp_portname);
+	return;
+    }
+    if ((udp_port_fd = socket(PF_INET, SOCK_DGRAM, 0)) == -1) {
+	com_err("XXX", errno, "when creating server socket");
+	return;
+    }
+    bzero((char *)&sin, sizeof(sin));
+    sin.sin_port = sp->s_port;
+    if (bind(udp_port_fd, (struct sockaddr *)&sin, sizeof(sin)) == -1) {
+	com_err("XXX", errno, "when binding server socket");
+	return;
+    }
+    return;
+}
+
+void
+listen_and_process()
+{
+    int cc, saddr_len;
+    krb5_error_code retval;
+    struct sockaddr_in saddr;
+    krb5_fulladdr faddr;
+    krb5_address addr;
+    krb5_data request;
+    krb5_data *response;
+    char pktbuf[MAX_DGRAM_SIZE];
+
+    if (udp_port_fd == -1) {
+	fprintf(stderr, "Network not setup\n");
+	return;
+    }
+    
+    while (!signal_requests_exit) {
+	saddr_len = sizeof(saddr);
+	if ((cc = recvfrom(udp_port_fd, pktbuf, sizeof(pktbuf), 0,
+			   (struct sockaddr *)&saddr, &saddr_len)) != -1) {
+	    if (!cc)
+		continue;		/* zero-length packet? */
+	    request.length = cc;
+	    request.data = pktbuf;
+	    faddr.port = ntohs(saddr.sin_port);
+	    faddr.address = &addr;
+	    addr.addrtype = ADDRTYPE_INET;
+	    addr.length = 4;
+	    addr.contents = (krb5_octet *) &saddr.sin_addr; /* XXX net order or host order? */
+	    if (retval = dispatch(&request, &faddr, &response)) {
+		com_err("XXX", retval, "while dispatching");
+		continue;
+	    }
+	    if ((cc = sendto(udp_port_fd, response->data, response->length, 0,
+			     (struct sockaddr *)&saddr, saddr_len)) != response->length) {
+		switch (cc) {
+		case -1:
+		    com_err("XXX", errno, "while sending reply to %s/%d",
+			    inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
+		    break;
+		default:
+		    fprintf(stderr, "short reply write %d vs %d\n",
+			    response->length, cc);
+		    break;
+		}
+	    }
+	    krb5_free_data(response);
+	} else {
+	    switch (errno) {
+	    case EINTR:
+		continue;
+	    default:
+		com_err("XXX", errno, "while receiving from network");
+		break;
+	    }
+	}
+	
+    }
+    
+}
+
+void
+closedown_network()
+{
+    if (udp_port_fd == -1) {
+	fprintf(stderr, "Network not setup\n");
+	return;
+    }
+    (void) close(udp_port_fd);
+    udp_port_fd = -1;
+    return;
+}
+
+#endif /* INET */
-- 
2.26.2