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162 lines
3.8 KiB
C
162 lines
3.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* getaddrinfo.h
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* Support getaddrinfo() on platforms that don't have it.
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*
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* Note: we use our own routines on platforms that don't HAVE_STRUCT_ADDRINFO,
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* whether or not the library routine getaddrinfo() can be found. This
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* policy is needed because on some platforms a manually installed libbind.a
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* may provide getaddrinfo(), yet the system headers may not provide the
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* struct definitions needed to call it. To avoid conflict with the libbind
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* definition in such cases, we rename our routines to pg_xxx() via macros.
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*
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* This code will also work on platforms where struct addrinfo is defined
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* in the system headers but no getaddrinfo() can be located.
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*
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* Copyright (c) 2003-2010, PostgreSQL Global Development Group
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*
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* src/include/getaddrinfo.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef GETADDRINFO_H
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#define GETADDRINFO_H
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#include <sys/socket.h>
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#include <netdb.h>
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/* Various macros that ought to be in <netdb.h>, but might not be */
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#ifndef EAI_FAIL
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#ifndef WIN32
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#define EAI_BADFLAGS (-1)
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#define EAI_NONAME (-2)
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#define EAI_AGAIN (-3)
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#define EAI_FAIL (-4)
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#define EAI_FAMILY (-6)
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#define EAI_SOCKTYPE (-7)
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#define EAI_SERVICE (-8)
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#define EAI_MEMORY (-10)
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#define EAI_SYSTEM (-11)
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#else /* WIN32 */
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#ifdef WIN32_ONLY_COMPILER
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#ifndef WSA_NOT_ENOUGH_MEMORY
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#define WSA_NOT_ENOUGH_MEMORY (WSAENOBUFS)
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#endif
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#ifndef __BORLANDC__
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#define WSATYPE_NOT_FOUND (WSABASEERR+109)
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#endif
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#endif
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#define EAI_AGAIN WSATRY_AGAIN
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#define EAI_BADFLAGS WSAEINVAL
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#define EAI_FAIL WSANO_RECOVERY
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#define EAI_FAMILY WSAEAFNOSUPPORT
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#define EAI_MEMORY WSA_NOT_ENOUGH_MEMORY
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#define EAI_NODATA WSANO_DATA
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#define EAI_NONAME WSAHOST_NOT_FOUND
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#define EAI_SERVICE WSATYPE_NOT_FOUND
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#define EAI_SOCKTYPE WSAESOCKTNOSUPPORT
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#endif /* !WIN32 */
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#endif /* !EAI_FAIL */
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#ifndef AI_PASSIVE
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#define AI_PASSIVE 0x0001
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#endif
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#ifndef AI_NUMERICHOST
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/*
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* some platforms don't support AI_NUMERICHOST; define as zero if using
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* the system version of getaddrinfo...
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*/
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#if defined(HAVE_STRUCT_ADDRINFO) && defined(HAVE_GETADDRINFO)
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#define AI_NUMERICHOST 0
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#else
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#define AI_NUMERICHOST 0x0004
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#endif
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#endif
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#ifndef NI_NUMERICHOST
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#define NI_NUMERICHOST 1
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#endif
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#ifndef NI_NUMERICSERV
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#define NI_NUMERICSERV 2
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#endif
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#ifndef NI_MAXHOST
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#define NI_MAXHOST 1025
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#endif
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#ifndef NI_MAXSERV
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#define NI_MAXSERV 32
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#endif
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#ifndef HAVE_STRUCT_ADDRINFO
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#ifndef WIN32
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struct addrinfo
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{
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int ai_flags;
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int ai_family;
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int ai_socktype;
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int ai_protocol;
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size_t ai_addrlen;
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struct sockaddr *ai_addr;
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char *ai_canonname;
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struct addrinfo *ai_next;
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};
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#else
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/*
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* The order of the structure elements on Win32 doesn't match the
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* order specified in the standard, but we have to match it for
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* IPv6 to work.
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*/
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struct addrinfo
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{
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int ai_flags;
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int ai_family;
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int ai_socktype;
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int ai_protocol;
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size_t ai_addrlen;
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char *ai_canonname;
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struct sockaddr *ai_addr;
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struct addrinfo *ai_next;
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};
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#endif
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#endif /* HAVE_STRUCT_ADDRINFO */
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#ifndef HAVE_GETADDRINFO
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/* Rename private copies per comments above */
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#ifdef getaddrinfo
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#undef getaddrinfo
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#endif
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#define getaddrinfo pg_getaddrinfo
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#ifdef freeaddrinfo
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#undef freeaddrinfo
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#endif
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#define freeaddrinfo pg_freeaddrinfo
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#ifdef gai_strerror
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#undef gai_strerror
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#endif
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#define gai_strerror pg_gai_strerror
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#ifdef getnameinfo
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#undef getnameinfo
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#endif
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#define getnameinfo pg_getnameinfo
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extern int getaddrinfo(const char *node, const char *service,
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const struct addrinfo * hints, struct addrinfo ** res);
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extern void freeaddrinfo(struct addrinfo * res);
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extern const char *gai_strerror(int errcode);
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extern int getnameinfo(const struct sockaddr * sa, int salen,
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char *node, int nodelen,
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char *service, int servicelen, int flags);
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#endif /* HAVE_GETADDRINFO */
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#endif /* GETADDRINFO_H */
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