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ngx_inet.h
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1 
2 /*
3  * Copyright (C) Igor Sysoev
4  * Copyright (C) Nginx, Inc.
5  */
6 
7 
8 #ifndef _NGX_INET_H_INCLUDED_
9 #define _NGX_INET_H_INCLUDED_
10 
11 
12 #include <ngx_config.h>
13 #include <ngx_core.h>
14 
15 
16 /*
17  * TODO: autoconfigure NGX_SOCKADDRLEN and NGX_SOCKADDR_STRLEN as
18  * sizeof(struct sockaddr_storage)
19  * sizeof(struct sockaddr_un)
20  * sizeof(struct sockaddr_in6)
21  * sizeof(struct sockaddr_in)
22  */
23 
24 #define NGX_INET_ADDRSTRLEN (sizeof("255.255.255.255") - 1)
25 #define NGX_INET6_ADDRSTRLEN \
26  (sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255") - 1)
27 #define NGX_UNIX_ADDRSTRLEN \
28  (sizeof(struct sockaddr_un) - offsetof(struct sockaddr_un, sun_path))
29 
30 #if (NGX_HAVE_UNIX_DOMAIN)
31 #define NGX_SOCKADDR_STRLEN (sizeof("unix:") - 1 + NGX_UNIX_ADDRSTRLEN)
32 #else
33 #define NGX_SOCKADDR_STRLEN (NGX_INET6_ADDRSTRLEN + sizeof("[]:65535") - 1)
34 #endif
35 
36 #if (NGX_HAVE_UNIX_DOMAIN)
37 #define NGX_SOCKADDRLEN sizeof(struct sockaddr_un)
38 #else
39 #define NGX_SOCKADDRLEN 512
40 #endif
41 
42 
43 typedef struct {
44  in_addr_t addr;
45  in_addr_t mask;
46 } ngx_in_cidr_t;
47 
48 
49 #if (NGX_HAVE_INET6)
50 
51 typedef struct {
52  struct in6_addr addr;
53  struct in6_addr mask;
54 } ngx_in6_cidr_t;
55 
56 #endif
57 
58 
59 typedef struct {
60  ngx_uint_t family;
61  union {
62  ngx_in_cidr_t in;
63 #if (NGX_HAVE_INET6)
64  ngx_in6_cidr_t in6;
65 #endif
66  } u;
67 } ngx_cidr_t;
68 
69 
70 typedef struct {
71  struct sockaddr *sockaddr;
72  socklen_t socklen;
73  ngx_str_t name;
74 } ngx_addr_t;
75 
76 
77 typedef struct {
78  ngx_str_t url;
79  ngx_str_t host;
80  ngx_str_t port_text;
81  ngx_str_t uri;
82 
83  in_port_t port;
84  in_port_t default_port;
85  int family;
86 
87  unsigned listen:1;
88  unsigned uri_part:1;
89  unsigned no_resolve:1;
90  unsigned one_addr:1; /* compatibility */
91 
92  unsigned no_port:1;
93  unsigned wildcard:1;
94 
95  socklen_t socklen;
96  u_char sockaddr[NGX_SOCKADDRLEN];
97 
98  ngx_addr_t *addrs;
99  ngx_uint_t naddrs;
100 
101  char *err;
102 } ngx_url_t;
103 
104 
105 in_addr_t ngx_inet_addr(u_char *text, size_t len);
106 #if (NGX_HAVE_INET6)
107 ngx_int_t ngx_inet6_addr(u_char *p, size_t len, u_char *addr);
108 size_t ngx_inet6_ntop(u_char *p, u_char *text, size_t len);
109 #endif
110 size_t ngx_sock_ntop(struct sockaddr *sa, u_char *text, size_t len,
111  ngx_uint_t port);
112 size_t ngx_inet_ntop(int family, void *addr, u_char *text, size_t len);
113 ngx_int_t ngx_ptocidr(ngx_str_t *text, ngx_cidr_t *cidr);
114 ngx_int_t ngx_parse_addr(ngx_pool_t *pool, ngx_addr_t *addr, u_char *text,
115  size_t len);
116 ngx_int_t ngx_parse_url(ngx_pool_t *pool, ngx_url_t *u);
117 ngx_int_t ngx_inet_resolve_host(ngx_pool_t *pool, ngx_url_t *u);
118 
119 
120 #endif /* _NGX_INET_H_INCLUDED_ */
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