include/netdb.h

   1 #ifndef _NETDB_H
   2 #define _NETDB_H
   3
   4 #ifdef __cplusplus
   5 extern "C" {
   6 #endif
   7
   8 #include <features.h>
   9 #include <netinet/in.h>
  10
  11 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
  12 #define __NEED_size_t
  13 #include <bits/alltypes.h>
  14 #endif
  15
  16 struct addrinfo {
  17         int ai_flags;
  18         int ai_family;
  19         int ai_socktype;
  20         int ai_protocol;
  21         socklen_t ai_addrlen;
  22         struct sockaddr *ai_addr;
  23         char *ai_canonname;
  24         struct addrinfo *ai_next;
  25 };
  26
  27 #define AI_PASSIVE      0x01
  28 #define AI_CANONNAME    0x02
  29 #define AI_NUMERICHOST  0x04
  30 #define AI_V4MAPPED     0x08
  31 #define AI_ALL          0x10
  32 #define AI_ADDRCONFIG   0x20
  33 #define AI_NUMERICSERV  0x400
  34
  35
  36 #define NI_NUMERICHOST  0x01
  37 #define NI_NUMERICSERV  0x02
  38 #define NI_NOFQDN       0x04
  39 #define NI_NAMEREQD     0x08
  40 #define NI_DGRAM        0x10
  41 #define NI_NUMERICSCOPE 0x100
  42
  43 #define EAI_BADFLAGS   -1
  44 #define EAI_NONAME     -2
  45 #define EAI_AGAIN      -3
  46 #define EAI_FAIL       -4
  47 #define EAI_NODATA     -5
  48 #define EAI_FAMILY     -6
  49 #define EAI_SOCKTYPE   -7
  50 #define EAI_SERVICE    -8
  51 #define EAI_MEMORY     -10
  52 #define EAI_SYSTEM     -11
  53 #define EAI_OVERFLOW   -12
  54
  55 int getaddrinfo (const char *__restrict, const char *__restrict, const struct addrinfo *__restrict, struct addrinfo **__restrict);
  56 void freeaddrinfo (struct addrinfo *);
  57 int getnameinfo (const struct sockaddr *__restrict, socklen_t, char *__restrict, socklen_t, char *__restrict, socklen_t, int);
  58 const char *gai_strerror(int);
  59
  60
  61 /* Legacy functions follow (marked OBsolete in SUS) */
  62
  63 struct netent {
  64         char *n_name;
  65         char **n_aliases;
  66         int n_addrtype;
  67         uint32_t n_net;
  68 };
  69
  70 struct hostent {
  71         char *h_name;
  72         char **h_aliases;
  73         int h_addrtype;
  74         int h_length;
  75         char **h_addr_list;
  76 };
  77 #define h_addr h_addr_list[0]
  78
  79 struct servent {
  80         char *s_name;
  81         char **s_aliases;
  82         int s_port;
  83         char *s_proto;
  84 };
  85
  86 struct protoent {
  87         char *p_name;
  88         char **p_aliases;
  89         int p_proto;
  90 };
  91
  92 void sethostent (int);
  93 void endhostent (void);
  94 struct hostent *gethostent (void);
  95
  96 void setnetent (int);
  97 void endnetent (void);
  98 struct netent *getnetent (void);
  99 struct netent *getnetbyaddr (uint32_t, int);
 100 struct netent *getnetbyname (const char *);
 101
 102 void setservent (int);
 103 void endservent (void);
 104 struct servent *getservent (void);
 105 struct servent *getservbyname (const char *, const char *);
 106 struct servent *getservbyport (int, const char *);
 107
 108 void setprotoent (int);
 109 void endprotoent (void);
 110 struct protoent *getprotoent (void);
 111 struct protoent *getprotobyname (const char *);
 112 struct protoent *getprotobynumber (int);
 113
 114 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || defined(_POSIX_SOURCE) \
 115  || (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE+0 < 200809L) \
 116  || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
 117 struct hostent *gethostbyname (const char *);
 118 struct hostent *gethostbyaddr (const void *, socklen_t, int);
 119 #ifdef __GNUC__
 120 __attribute__((const))
 121 #endif
 122 int *__h_errno_location(void);
 123 #define h_errno (*__h_errno_location())
 124 #define HOST_NOT_FOUND 1
 125 #define TRY_AGAIN      2
 126 #define NO_RECOVERY    3
 127 #define NO_DATA        4
 128 #define NO_ADDRESS     NO_DATA
 129 #endif
 130
 131 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 132 void herror(const char *);
 133 const char *hstrerror(int);
 134 int gethostbyname_r(const char *, struct hostent *, char *, size_t, struct hostent **, int *);
 135 int gethostbyname2_r(const char *, int, struct hostent *, char *, size_t, struct hostent **, int *);
 136 struct hostent *gethostbyname2(const char *, int);
 137 int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, char *, size_t, struct hostent **, int *);
 138 int getservbyport_r(int, const char *, struct servent *, char *, size_t, struct servent **);
 139 int getservbyname_r(const char *, const char *, struct servent *, char *, size_t, struct servent **);
 140 #define EAI_NODATA     -5
 141 #define EAI_ADDRFAMILY -9
 142 #define EAI_INPROGRESS -100
 143 #define EAI_CANCELED   -101
 144 #define EAI_NOTCANCELED -102
 145 #define EAI_ALLDONE    -103
 146 #define EAI_INTR       -104
 147 #define EAI_IDN_ENCODE -105
 148 #define NI_MAXHOST 255
 149 #define NI_MAXSERV 32
 150 #endif
 151
 152
 153 #ifdef __cplusplus
 154 }
 155 #endif
 156
 157 #endif