1 /*------------------------------------------------------------------------- 2 * 3 * getaddrinfo.h 4 * Support getaddrinfo() on platforms that don't have it. 5 * 6 * Note: we use our own routines on platforms that don't HAVE_STRUCT_ADDRINFO, 7 * whether or not the library routine getaddrinfo() can be found. This 8 * policy is needed because on some platforms a manually installed libbind.a 9 * may provide getaddrinfo(), yet the system headers may not provide the 10 * struct definitions needed to call it. To avoid conflict with the libbind 11 * definition in such cases, we rename our routines to pg_xxx() via macros. 12 * 13 * This code will also work on platforms where struct addrinfo is defined 14 * in the system headers but no getaddrinfo() can be located. 15 * 16 * Copyright (c) 2003-2016, PostgreSQL Global Development Group 17 * 18 * src/include/getaddrinfo.h 19 * 20 *------------------------------------------------------------------------- 21 */ 22 #ifndef GETADDRINFO_H 23 #define GETADDRINFO_H 24 25 #include <sys/socket.h> 26 #include <netdb.h> 27 28 29 /* Various macros that ought to be in <netdb.h>, but might not be */ 30 31 #ifndef EAI_FAIL 32 #ifndef WIN32 33 #define EAI_BADFLAGS (-1) 34 #define EAI_NONAME (-2) 35 #define EAI_AGAIN (-3) 36 #define EAI_FAIL (-4) 37 #define EAI_FAMILY (-6) 38 #define EAI_SOCKTYPE (-7) 39 #define EAI_SERVICE (-8) 40 #define EAI_MEMORY (-10) 41 #define EAI_SYSTEM (-11) 42 #else /* WIN32 */ 43 #ifdef WIN32_ONLY_COMPILER 44 #ifndef WSA_NOT_ENOUGH_MEMORY 45 #define WSA_NOT_ENOUGH_MEMORY (WSAENOBUFS) 46 #endif 47 #ifndef __BORLANDC__ 48 #define WSATYPE_NOT_FOUND (WSABASEERR+109) 49 #endif 50 #endif 51 #define EAI_AGAIN WSATRY_AGAIN 52 #define EAI_BADFLAGS WSAEINVAL 53 #define EAI_FAIL WSANO_RECOVERY 54 #define EAI_FAMILY WSAEAFNOSUPPORT 55 #define EAI_MEMORY WSA_NOT_ENOUGH_MEMORY 56 #define EAI_NODATA WSANO_DATA 57 #define EAI_NONAME WSAHOST_NOT_FOUND 58 #define EAI_SERVICE WSATYPE_NOT_FOUND 59 #define EAI_SOCKTYPE WSAESOCKTNOSUPPORT 60 #endif /* !WIN32 */ 61 #endif /* !EAI_FAIL */ 62 63 #ifndef AI_PASSIVE 64 #define AI_PASSIVE 0x0001 65 #endif 66 67 #ifndef AI_NUMERICHOST 68 /* 69 * some platforms don't support AI_NUMERICHOST; define as zero if using 70 * the system version of getaddrinfo... 71 */ 72 #if defined(HAVE_STRUCT_ADDRINFO) && defined(HAVE_GETADDRINFO) 73 #define AI_NUMERICHOST 0 74 #else 75 #define AI_NUMERICHOST 0x0004 76 #endif 77 #endif 78 79 #ifndef NI_NUMERICHOST 80 #define NI_NUMERICHOST 1 81 #endif 82 #ifndef NI_NUMERICSERV 83 #define NI_NUMERICSERV 2 84 #endif 85 #ifndef NI_NAMEREQD 86 #define NI_NAMEREQD 4 87 #endif 88 89 #ifndef NI_MAXHOST 90 #define NI_MAXHOST 1025 91 #endif 92 #ifndef NI_MAXSERV 93 #define NI_MAXSERV 32 94 #endif 95 96 97 #ifndef HAVE_STRUCT_ADDRINFO 98 99 #ifndef WIN32 100 struct addrinfo 101 { 102 int ai_flags; 103 int ai_family; 104 int ai_socktype; 105 int ai_protocol; 106 size_t ai_addrlen; 107 struct sockaddr *ai_addr; 108 char *ai_canonname; 109 struct addrinfo *ai_next; 110 }; 111 #else 112 /* 113 * The order of the structure elements on Win32 doesn't match the 114 * order specified in the standard, but we have to match it for 115 * IPv6 to work. 116 */ 117 struct addrinfo 118 { 119 int ai_flags; 120 int ai_family; 121 int ai_socktype; 122 int ai_protocol; 123 size_t ai_addrlen; 124 char *ai_canonname; 125 struct sockaddr *ai_addr; 126 struct addrinfo *ai_next; 127 }; 128 #endif 129 #endif /* HAVE_STRUCT_ADDRINFO */ 130 131 132 #ifndef HAVE_GETADDRINFO 133 134 /* Rename private copies per comments above */ 135 #ifdef getaddrinfo 136 #undef getaddrinfo 137 #endif 138 #define getaddrinfo pg_getaddrinfo 139 140 #ifdef freeaddrinfo 141 #undef freeaddrinfo 142 #endif 143 #define freeaddrinfo pg_freeaddrinfo 144 145 #ifdef gai_strerror 146 #undef gai_strerror 147 #endif 148 #define gai_strerror pg_gai_strerror 149 150 #ifdef getnameinfo 151 #undef getnameinfo 152 #endif 153 #define getnameinfo pg_getnameinfo 154 155 extern int getaddrinfo(const char *node, const char *service, 156 const struct addrinfo * hints, struct addrinfo ** res); 157 extern void freeaddrinfo(struct addrinfo * res); 158 extern const char *gai_strerror(int errcode); 159 extern int getnameinfo(const struct sockaddr * sa, int salen, 160 char *node, int nodelen, 161 char *service, int servicelen, int flags); 162 #endif /* HAVE_GETADDRINFO */ 163 164 #endif /* GETADDRINFO_H */ 165