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Diffstat (limited to 'src/include/getaddrinfo.h')
| -rw-r--r-- | src/include/getaddrinfo.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/include/getaddrinfo.h b/src/include/getaddrinfo.h new file mode 100644 index 0000000..2042c2d --- /dev/null +++ b/src/include/getaddrinfo.h @@ -0,0 +1,162 @@ +/*------------------------------------------------------------------------- + * + * getaddrinfo.h + * Support getaddrinfo() on platforms that don't have it. + * + * Note: we use our own routines on platforms that don't HAVE_STRUCT_ADDRINFO, + * whether or not the library routine getaddrinfo() can be found. This + * policy is needed because on some platforms a manually installed libbind.a + * may provide getaddrinfo(), yet the system headers may not provide the + * struct definitions needed to call it. To avoid conflict with the libbind + * definition in such cases, we rename our routines to pg_xxx() via macros. + * + * This code will also work on platforms where struct addrinfo is defined + * in the system headers but no getaddrinfo() can be located. + * + * Copyright (c) 2003-2022, PostgreSQL Global Development Group + * + * src/include/getaddrinfo.h + * + *------------------------------------------------------------------------- + */ +#ifndef GETADDRINFO_H +#define GETADDRINFO_H + +#include <sys/socket.h> +#include <netdb.h> + + +/* Various macros that ought to be in <netdb.h>, but might not be */ + +#ifndef EAI_FAIL +#ifndef WIN32 +#define EAI_BADFLAGS (-1) +#define EAI_NONAME (-2) +#define EAI_AGAIN (-3) +#define EAI_FAIL (-4) +#define EAI_FAMILY (-6) +#define EAI_SOCKTYPE (-7) +#define EAI_SERVICE (-8) +#define EAI_MEMORY (-10) +#define EAI_SYSTEM (-11) +#else /* WIN32 */ +#ifdef _MSC_VER +#ifndef WSA_NOT_ENOUGH_MEMORY +#define WSA_NOT_ENOUGH_MEMORY (WSAENOBUFS) +#endif +#define WSATYPE_NOT_FOUND (WSABASEERR+109) +#endif +#define EAI_AGAIN WSATRY_AGAIN +#define EAI_BADFLAGS WSAEINVAL +#define EAI_FAIL WSANO_RECOVERY +#define EAI_FAMILY WSAEAFNOSUPPORT +#define EAI_MEMORY WSA_NOT_ENOUGH_MEMORY +#define EAI_NODATA WSANO_DATA +#define EAI_NONAME WSAHOST_NOT_FOUND +#define EAI_SERVICE WSATYPE_NOT_FOUND +#define EAI_SOCKTYPE WSAESOCKTNOSUPPORT +#endif /* !WIN32 */ +#endif /* !EAI_FAIL */ + +#ifndef AI_PASSIVE +#define AI_PASSIVE 0x0001 +#endif + +#ifndef AI_NUMERICHOST +/* + * some platforms don't support AI_NUMERICHOST; define as zero if using + * the system version of getaddrinfo... + */ +#if defined(HAVE_STRUCT_ADDRINFO) && defined(HAVE_GETADDRINFO) +#define AI_NUMERICHOST 0 +#else +#define AI_NUMERICHOST 0x0004 +#endif +#endif + +#ifndef NI_NUMERICHOST +#define NI_NUMERICHOST 1 +#endif +#ifndef NI_NUMERICSERV +#define NI_NUMERICSERV 2 +#endif +#ifndef NI_NAMEREQD +#define NI_NAMEREQD 4 +#endif + +#ifndef NI_MAXHOST +#define NI_MAXHOST 1025 +#endif +#ifndef NI_MAXSERV +#define NI_MAXSERV 32 +#endif + + +#ifndef HAVE_STRUCT_ADDRINFO + +#ifndef WIN32 +struct addrinfo +{ + int ai_flags; + int ai_family; + int ai_socktype; + int ai_protocol; + size_t ai_addrlen; + struct sockaddr *ai_addr; + char *ai_canonname; + struct addrinfo *ai_next; +}; +#else +/* + * The order of the structure elements on Win32 doesn't match the + * order specified in the standard, but we have to match it for + * IPv6 to work. + */ +struct addrinfo +{ + int ai_flags; + int ai_family; + int ai_socktype; + int ai_protocol; + size_t ai_addrlen; + char *ai_canonname; + struct sockaddr *ai_addr; + struct addrinfo *ai_next; +}; +#endif +#endif /* HAVE_STRUCT_ADDRINFO */ + + +#ifndef HAVE_GETADDRINFO + +/* Rename private copies per comments above */ +#ifdef getaddrinfo +#undef getaddrinfo +#endif +#define getaddrinfo pg_getaddrinfo + +#ifdef freeaddrinfo +#undef freeaddrinfo +#endif +#define freeaddrinfo pg_freeaddrinfo + +#ifdef gai_strerror +#undef gai_strerror +#endif +#define gai_strerror pg_gai_strerror + +#ifdef getnameinfo +#undef getnameinfo +#endif +#define getnameinfo pg_getnameinfo + +extern int getaddrinfo(const char *node, const char *service, + const struct addrinfo *hints, struct addrinfo **res); +extern void freeaddrinfo(struct addrinfo *res); +extern const char *gai_strerror(int errcode); +extern int getnameinfo(const struct sockaddr *sa, int salen, + char *node, int nodelen, + char *service, int servicelen, int flags); +#endif /* HAVE_GETADDRINFO */ + +#endif /* GETADDRINFO_H */ |