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getaddrinfo.h
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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) 2003-2017, 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;
106  size_t ai_addrlen;
107  struct sockaddr *ai_addr;
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 */
#define getaddrinfo
Definition: getaddrinfo.h:138
#define freeaddrinfo
Definition: getaddrinfo.h:143
int errcode(int sqlerrcode)
Definition: elog.c:575
#define gai_strerror
Definition: getaddrinfo.h:148
char * ai_canonname
Definition: getaddrinfo.h:108
int ai_protocol
Definition: getaddrinfo.h:105
int ai_socktype
Definition: getaddrinfo.h:104
struct addrinfo * ai_next
Definition: getaddrinfo.h:109
#define getnameinfo
Definition: getaddrinfo.h:153
size_t ai_addrlen
Definition: getaddrinfo.h:106
int ai_flags
Definition: getaddrinfo.h:102
struct sockaddr * ai_addr
Definition: getaddrinfo.h:107
int ai_family
Definition: getaddrinfo.h:103