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authorCy Schubert <cy@FreeBSD.org>2017-07-07 17:03:42 +0000
committerCy Schubert <cy@FreeBSD.org>2017-07-07 17:03:42 +0000
commit33a9b234e7087f573ef08cd7318c6497ba08b439 (patch)
treed0ea40ad3bf5463a3c55795977c71bcb7d781b4b /src/include/socket-utils.h
downloadsrc-33a9b234e7087f573ef08cd7318c6497ba08b439.tar.gz
src-33a9b234e7087f573ef08cd7318c6497ba08b439.zip
Import MIT KRB5 1.15.1, which will gracefully replace KTH Heimdal.vendor/krb5/1.15.1
The tarball used in this import is the same tarball used in ports/krb5-115 r435378. Obtained from: http://web.mit.edu/kerberos/dist/ Thanks to: pfg (for all your tireless behind-the-scenes effort)
Notes
Notes: svn path=/vendor-crypto/krb5/dist/; revision=320790 svn path=/vendor-crypto/krb5/1.15.1/; revision=320791; tag=vendor/krb5/1.15.1
Diffstat (limited to 'src/include/socket-utils.h')
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1 files changed, 135 insertions, 0 deletions
diff --git a/src/include/socket-utils.h b/src/include/socket-utils.h
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+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+ * Copyright (C) 2001,2005 by the Massachusetts Institute of Technology,
+ * Cambridge, MA, USA. All Rights Reserved.
+ *
+ * This software is being provided to you, the LICENSEE, by the
+ * Massachusetts Institute of Technology (M.I.T.) under the following
+ * license. By obtaining, using and/or copying this software, you agree
+ * that you have read, understood, and will comply with these terms and
+ * conditions:
+ *
+ * Export of this software from the United States of America may
+ * require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify and distribute
+ * this software and its documentation for any purpose and without fee or
+ * royalty is hereby granted, provided that you agree to comply with the
+ * following copyright notice and statements, including the disclaimer, and
+ * that the same appear on ALL copies of the software and documentation,
+ * including modifications that you make for internal use or for
+ * distribution:
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS", AND M.I.T. MAKES NO REPRESENTATIONS
+ * OR WARRANTIES, EXPRESS OR IMPLIED. By way of example, but not
+ * limitation, M.I.T. MAKES NO REPRESENTATIONS OR WARRANTIES OF
+ * MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF
+ * THE LICENSED SOFTWARE OR DOCUMENTATION WILL NOT INFRINGE ANY THIRD PARTY
+ * PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS.
+ *
+ * The name of the Massachusetts Institute of Technology or M.I.T. may NOT
+ * be used in advertising or publicity pertaining to distribution of the
+ * software. Title to copyright in this software and any associated
+ * documentation shall at all times remain with M.I.T., and USER agrees to
+ * preserve same.
+ *
+ * Furthermore if you modify this software you must label
+ * your software as modified software and not distribute it in such a
+ * fashion that it might be confused with the original M.I.T. software.
+ */
+
+#ifndef SOCKET_UTILS_H
+#define SOCKET_UTILS_H
+
+/* Some useful stuff cross-platform for manipulating socket addresses.
+ We assume at least ipv4 sockaddr_in support. The sockaddr_storage
+ stuff comes from the ipv6 socket api enhancements; socklen_t is
+ provided on some systems; the rest is just convenience for internal
+ use in the krb5 tree.
+
+ Do NOT install this file. */
+
+/* for HAVE_SOCKLEN_T etc */
+#include "autoconf.h"
+/* for sockaddr_storage */
+#include "port-sockets.h"
+/* for "inline" if needed */
+#include "k5-platform.h"
+
+/*
+ * There's a lot of confusion between pointers to different sockaddr
+ * types, and pointers with different degrees of indirection, as in
+ * the locate_kdc type functions. Use these function to ensure we
+ * don't do something silly like cast a "sockaddr **" to a
+ * "sockaddr_in *".
+ *
+ * The casts to (void *) are to get GCC to shut up about alignment
+ * increasing.
+ */
+static inline struct sockaddr_in *sa2sin (struct sockaddr *sa)
+{
+ return (struct sockaddr_in *) (void *) sa;
+}
+static inline struct sockaddr_in6 *sa2sin6 (struct sockaddr *sa)
+{
+ return (struct sockaddr_in6 *) (void *) sa;
+}
+static inline struct sockaddr *ss2sa (struct sockaddr_storage *ss)
+{
+ return (struct sockaddr *) ss;
+}
+static inline struct sockaddr_in *ss2sin (struct sockaddr_storage *ss)
+{
+ return (struct sockaddr_in *) ss;
+}
+static inline struct sockaddr_in6 *ss2sin6 (struct sockaddr_storage *ss)
+{
+ return (struct sockaddr_in6 *) ss;
+}
+
+/* Set the IPv4 or IPv6 port on sa to port. Do nothing if sa is not an
+ * Internet socket. */
+static inline void
+sa_setport(struct sockaddr *sa, uint16_t port)
+{
+ if (sa->sa_family == AF_INET)
+ sa2sin(sa)->sin_port = htons(port);
+ else if (sa->sa_family == AF_INET6)
+ sa2sin6(sa)->sin6_port = htons(port);
+}
+
+/* Get the Internet port number of sa, or 0 if it is not an Internet socket. */
+static inline uint16_t
+sa_getport(struct sockaddr *sa)
+{
+ if (sa->sa_family == AF_INET)
+ return ntohs(sa2sin(sa)->sin_port);
+ else if (sa->sa_family == AF_INET6)
+ return ntohs(sa2sin6(sa)->sin6_port);
+ else
+ return 0;
+}
+
+/* Return true if sa is an IPv4 or IPv6 socket address. */
+static inline int
+sa_is_inet(struct sockaddr *sa)
+{
+ return sa->sa_family == AF_INET || sa->sa_family == AF_INET6;
+}
+
+/* Return the length of an IPv4 or IPv6 socket structure; abort if it is
+ * neither. */
+static inline socklen_t
+sa_socklen(struct sockaddr *sa)
+{
+ if (sa->sa_family == AF_INET6)
+ return sizeof(struct sockaddr_in6);
+ else if (sa->sa_family == AF_INET)
+ return sizeof(struct sockaddr_in);
+ else
+ abort();
+}
+
+#endif /* SOCKET_UTILS_H */