vendor/krb5/1.15.1

1 files changed, 234 insertions, 0 deletions

diff --git a/src/include/fake-addrinfo.h b/src/include/fake-addrinfo.h
new file mode 100644
index 000000000000..03666a0aaaa7
--- /dev/null
+++ b/src/include/fake-addrinfo.h
@@ -0,0 +1,234 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+ * Copyright (C) 2001,2002,2003,2004 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.
+ */
+
+/* Approach overview:
+
+   If a system version is available but buggy, save handles to it (via
+   inline functions in a support library), redefine the names to refer
+   to library functions, and in those functions, call the system
+   versions and fix up the returned data.  Use the native data
+   structures and flag values.
+
+   If no system version exists, use gethostby* and fake it.  Define
+   the data structures and flag values locally.
+
+
+   On Mac OS X, getaddrinfo results aren't cached (though
+   gethostbyname results are), so we need to build a cache here.  Now
+   things are getting really messy.  Because the cache is in use, we
+   use getservbyname, and throw away thread safety.  (Not that the
+   cache is thread safe, but when we get locking support, that'll be
+   dealt with.)  This code needs tearing down and rebuilding, soon.
+
+
+   Note that recent Windows developers' code has an interesting hack:
+   When you include the right header files, with the right set of
+   macros indicating system versions, you'll get an inline function
+   that looks for getaddrinfo (or whatever) in the system library, and
+   calls it if it's there.  If it's not there, it fakes it with
+   gethostby* calls.
+
+   We're taking a simpler approach: A system provides these routines or
+   it does not.
+
+   Someday, we may want to take into account different versions (say,
+   different revs of GNU libc) where some are broken in one way, and
+   some work or are broken in another way.  Cross that bridge when we
+   come to it.  */
+
+/* To do, maybe:
+
+   + For AIX 4.3.3, using the RFC 2133 definition: Implement
+   AI_NUMERICHOST.  It's not defined in the header file.
+
+   For certain (old?) versions of GNU libc, AI_NUMERICHOST is
+   defined but not implemented.
+
+   + Use gethostbyname2, inet_aton and other IPv6 or thread-safe
+   functions if available.  But, see
+   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=135182 for one
+   gethostbyname2 problem on Linux.  And besides, if a platform is
+   supporting IPv6 at all, they really should be doing getaddrinfo
+   by now.
+
+   + inet_ntop, inet_pton
+
+   + Conditionally export/import the function definitions, so a
+   library can have a single copy instead of multiple.
+
+   + Upgrade host requirements to include working implementations of
+   these functions, and throw all this away.  Pleeease?  :-)  */
+
+#ifndef FAI_DEFINED
+#define FAI_DEFINED
+#include "port-sockets.h"
+#include "socket-utils.h"
+
+#if !defined (HAVE_GETADDRINFO)
+
+#undef  addrinfo
+#define addrinfo        my_fake_addrinfo
+
+struct addrinfo {
+    int ai_family;              /* PF_foo */
+    int ai_socktype;            /* SOCK_foo */
+    int ai_protocol;            /* 0, IPPROTO_foo */
+    int ai_flags;               /* AI_PASSIVE etc */
+    size_t ai_addrlen;          /* real length of socket address */
+    char *ai_canonname;         /* canonical name of host */
+    struct sockaddr *ai_addr;   /* pointer to variable-size address */
+    struct addrinfo *ai_next;   /* next in linked list */
+};
+
+#undef  AI_PASSIVE
+#define AI_PASSIVE      0x01
+#undef  AI_CANONNAME
+#define AI_CANONNAME    0x02
+#undef  AI_NUMERICHOST
+#define AI_NUMERICHOST  0x04
+/* RFC 2553 says these are part of the interface for getipnodebyname,
+   not for getaddrinfo.  RFC 3493 says they're part of the interface
+   for getaddrinfo, and getipnodeby* are deprecated.  Our fake
+   getaddrinfo implementation here does IPv4 only anyways.  */
+#undef  AI_V4MAPPED
+#define AI_V4MAPPED     0
+#undef  AI_ADDRCONFIG
+#define AI_ADDRCONFIG   0
+#undef  AI_ALL
+#define AI_ALL          0
+#undef  AI_DEFAULT
+#define AI_DEFAULT      (AI_V4MAPPED|AI_ADDRCONFIG)
+
+#ifndef NI_MAXHOST
+#define NI_MAXHOST 1025
+#endif
+#ifndef NI_MAXSERV
+#define NI_MAXSERV 32
+#endif
+
+#undef  NI_NUMERICHOST
+#define NI_NUMERICHOST  0x01
+#undef  NI_NUMERICSERV
+#define NI_NUMERICSERV  0x02
+#undef  NI_NAMEREQD
+#define NI_NAMEREQD     0x04
+#undef  NI_DGRAM
+#define NI_DGRAM        0x08
+#undef  NI_NOFQDN
+#define NI_NOFQDN       0x10
+
+
+#undef  EAI_ADDRFAMILY
+#define EAI_ADDRFAMILY  1
+#undef  EAI_AGAIN
+#define EAI_AGAIN       2
+#undef  EAI_BADFLAGS
+#define EAI_BADFLAGS    3
+#undef  EAI_FAIL
+#define EAI_FAIL        4
+#undef  EAI_FAMILY
+#define EAI_FAMILY      5
+#undef  EAI_MEMORY
+#define EAI_MEMORY      6
+#undef  EAI_NODATA
+#define EAI_NODATA      7
+#undef  EAI_NONAME
+#define EAI_NONAME      8
+#undef  EAI_SERVICE
+#define EAI_SERVICE     9
+#undef  EAI_SOCKTYPE
+#define EAI_SOCKTYPE    10
+#undef  EAI_SYSTEM
+#define EAI_SYSTEM      11
+
+#endif /* ! HAVE_GETADDRINFO */
+
+/* Fudge things on older gai implementations.  */
+/* AIX 4.3.3 is based on RFC 2133; no AI_NUMERICHOST.  */
+#ifndef AI_NUMERICHOST
+# define AI_NUMERICHOST 0
+#endif
+/* Partial RFC 2553 implementations may not have AI_ADDRCONFIG and
+   friends, which RFC 3493 says are now part of the getaddrinfo
+   interface, and we'll want to use.  */
+#ifndef AI_ADDRCONFIG
+# define AI_ADDRCONFIG 0
+#endif
+#ifndef AI_V4MAPPED
+# define AI_V4MAPPED 0
+#endif
+#ifndef AI_ALL
+# define AI_ALL 0
+#endif
+#ifndef AI_DEFAULT
+# define AI_DEFAULT (AI_ADDRCONFIG|AI_V4MAPPED)
+#endif
+
+#if defined(NEED_INSIXADDR_ANY)
+/* If compiling with IPv6 support and C library does not define in6addr_any */
+extern const struct in6_addr krb5int_in6addr_any;
+#undef in6addr_any
+#define in6addr_any krb5int_in6addr_any
+#endif
+
+/* Call out to stuff defined in libkrb5support.  */
+extern int krb5int_getaddrinfo (const char *node, const char *service,
+                                const struct addrinfo *hints,
+                                struct addrinfo **aip);
+extern void krb5int_freeaddrinfo (struct addrinfo *ai);
+extern const char *krb5int_gai_strerror(int err);
+extern int krb5int_getnameinfo (const struct sockaddr *sa, socklen_t salen,
+                                char *hbuf, size_t hbuflen,
+                                char *sbuf, size_t sbuflen,
+                                int flags);
+#ifndef IMPLEMENT_FAKE_GETADDRINFO
+#undef  getaddrinfo
+#define getaddrinfo krb5int_getaddrinfo
+#undef  freeaddrinfo
+#define freeaddrinfo krb5int_freeaddrinfo
+#undef  gai_strerror
+#define gai_strerror krb5int_gai_strerror
+#undef  getnameinfo
+#define getnameinfo krb5int_getnameinfo
+#endif
+
+#endif /* FAI_DEFINED */