1 /* 2 * Copyright (c) 2006-2018, RT-Thread Development Team 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 * 6 * Change Logs: 7 * Date Author Notes 8 * 2018-05-24 ChenYong First version 9 */ 10 #ifndef SAL_NETDB_H__ 11 #define SAL_NETDB_H__ 12 13 #include <sal_socket.h> 14 15 #ifdef __cplusplus 16 extern "C" { 17 #endif 18 19 #define EAI_NONAME 200 20 #define EAI_SERVICE 201 21 #define EAI_FAIL 202 22 #define EAI_MEMORY 203 23 #define EAI_FAMILY 204 24 25 #define HOST_NOT_FOUND 210 26 #define NO_DATA 211 27 #define NO_RECOVERY 212 28 #define TRY_AGAIN 213 29 30 #define AI_PASSIVE 0x01 31 #define AI_CANONNAME 0x02 32 #define AI_NUMERICHOST 0x04 33 #define AI_NUMERICSERV 0x08 34 #define AI_V4MAPPED 0x10 35 #define AI_ALL 0x20 36 #define AI_ADDRCONFIG 0x40 37 38 /* input flags for structure addrinfo */ 39 #define AI_PASSIVE 0x01 40 #define AI_CANONNAME 0x02 41 #define AI_NUMERICHOST 0x04 42 #define AI_NUMERICSERV 0x08 43 #define AI_V4MAPPED 0x10 44 #define AI_ALL 0x20 45 #define AI_ADDRCONFIG 0x40 46 47 #define DNS_MAX_NAME_LENGTH 256 48 49 struct hostent { 50 char *h_name; /* Official name of the host. */ 51 char **h_aliases; /* A pointer to an array of pointers to alternative host names, 52 terminated by a null pointer. */ 53 int h_addrtype; /* Address type. */ 54 int h_length; /* The length, in bytes, of the address. */ 55 char **h_addr_list; /* A pointer to an array of pointers to network addresses (in 56 network byte order) for the host, terminated by a null pointer. */ 57 #define h_addr h_addr_list[0] /* for backward compatibility */ 58 }; 59 60 struct addrinfo { 61 int ai_flags; /* Input flags. */ 62 int ai_family; /* Address family of socket. */ 63 int ai_socktype; /* Socket type. */ 64 int ai_protocol; /* Protocol of socket. */ 65 socklen_t ai_addrlen; /* Length of socket address. */ 66 struct sockaddr *ai_addr; /* Socket address of socket. */ 67 char *ai_canonname; /* Canonical name of service location. */ 68 struct addrinfo *ai_next; /* Pointer to next in list. */ 69 }; 70 71 struct hostent *sal_gethostbyname(const char *name); 72 73 int sal_gethostbyname_r(const char *name, struct hostent *ret, char *buf, 74 size_t buflen, struct hostent **result, int *h_errnop); 75 void sal_freeaddrinfo(struct addrinfo *ai); 76 int sal_getaddrinfo(const char *nodename, 77 const char *servname, 78 const struct addrinfo *hints, 79 struct addrinfo **res); 80 81 #ifdef __cplusplus 82 } 83 #endif 84 85 #endif /* SAL_NETDB_H__ */ 86