Mercurial > hg > nginx
comparison src/http/modules/ngx_http_access_module.c @ 501:d4ea69372b94 release-0.1.25
nginx-0.1.25-RELEASE import
*) Bugfix: nginx did run on Linux parisc.
*) Feature: nginx now does not start under FreeBSD if the sysctl
kern.ipc.somaxconn value is too big.
*) Bugfix: if a request was internally redirected by the
ngx_http_index_module module to the ngx_http_proxy_module or
ngx_http_fastcgi_module modules, then the index file was not closed
after request completion.
*) Feature: the "proxy_pass" can be used in location with regular
expression.
*) Feature: the ngx_http_rewrite_filter_module module supports the
condition like "if ($HTTP_USER_AGENT ~ MSIE)".
*) Bugfix: nginx started too slow if the large number of addresses and
text values were used in the "geo" directive.
*) Change: a variable name must be declared as "$name" in the "geo"
directive. The previous variant without "$" is still supported, but
will be removed soon.
*) Feature: the "%{VARIABLE}v" logging parameter.
*) Feature: the "set $name value" directive.
*) Bugfix: gcc 4.0 compatibility.
*) Feature: the --with-openssl-opt=OPTIONS autoconfiguration directive.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Sat, 19 Mar 2005 12:38:37 +0000 |
parents | src/http/modules/ngx_http_access_handler.c@64d9afb209da |
children | 9b8c906f6e63 |
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1 | |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #include <ngx_config.h> | |
8 #include <ngx_core.h> | |
9 #include <ngx_http.h> | |
10 | |
11 | |
12 /* AF_INET only */ | |
13 | |
14 typedef struct { | |
15 in_addr_t mask; | |
16 in_addr_t addr; | |
17 unsigned deny; | |
18 } ngx_http_access_rule_t; | |
19 | |
20 | |
21 typedef struct { | |
22 ngx_array_t *rules; /* array of ngx_http_access_rule_t */ | |
23 } ngx_http_access_loc_conf_t; | |
24 | |
25 | |
26 static ngx_int_t ngx_http_access_handler(ngx_http_request_t *r); | |
27 static char *ngx_http_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, | |
28 void *conf); | |
29 static void *ngx_http_access_create_loc_conf(ngx_conf_t *cf); | |
30 static char *ngx_http_access_merge_loc_conf(ngx_conf_t *cf, | |
31 void *parent, void *child); | |
32 static ngx_int_t ngx_http_access_init(ngx_cycle_t *cycle); | |
33 | |
34 | |
35 static ngx_command_t ngx_http_access_commands[] = { | |
36 | |
37 { ngx_string("allow"), | |
38 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
39 ngx_http_access_rule, | |
40 NGX_HTTP_LOC_CONF_OFFSET, | |
41 0, | |
42 NULL }, | |
43 | |
44 { ngx_string("deny"), | |
45 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
46 ngx_http_access_rule, | |
47 NGX_HTTP_LOC_CONF_OFFSET, | |
48 0, | |
49 NULL }, | |
50 | |
51 ngx_null_command | |
52 }; | |
53 | |
54 | |
55 | |
56 ngx_http_module_t ngx_http_access_module_ctx = { | |
57 NULL, /* pre conf */ | |
58 | |
59 NULL, /* create main configuration */ | |
60 NULL, /* init main configuration */ | |
61 | |
62 NULL, /* create server configuration */ | |
63 NULL, /* merge server configuration */ | |
64 | |
65 ngx_http_access_create_loc_conf, /* create location configuration */ | |
66 ngx_http_access_merge_loc_conf /* merge location configuration */ | |
67 }; | |
68 | |
69 | |
70 ngx_module_t ngx_http_access_module = { | |
71 NGX_MODULE, | |
72 &ngx_http_access_module_ctx, /* module context */ | |
73 ngx_http_access_commands, /* module directives */ | |
74 NGX_HTTP_MODULE, /* module type */ | |
75 ngx_http_access_init, /* init module */ | |
76 NULL /* init process */ | |
77 }; | |
78 | |
79 | |
80 static ngx_int_t | |
81 ngx_http_access_handler(ngx_http_request_t *r) | |
82 { | |
83 ngx_uint_t i; | |
84 struct sockaddr_in *sin; | |
85 ngx_http_access_rule_t *rule; | |
86 ngx_http_access_loc_conf_t *alcf; | |
87 | |
88 alcf = ngx_http_get_module_loc_conf(r, ngx_http_access_module); | |
89 | |
90 if (alcf->rules == NULL) { | |
91 return NGX_OK; | |
92 } | |
93 | |
94 /* AF_INET only */ | |
95 | |
96 sin = (struct sockaddr_in *) r->connection->sockaddr; | |
97 | |
98 rule = alcf->rules->elts; | |
99 for (i = 0; i < alcf->rules->nelts; i++) { | |
100 | |
101 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
102 "%08XD %08XD %08XD", | |
103 sin->sin_addr.s_addr, rule[i].mask, rule[i].addr); | |
104 | |
105 if ((sin->sin_addr.s_addr & rule[i].mask) == rule[i].addr) { | |
106 if (rule[i].deny) { | |
107 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
108 "access forbidden by rule"); | |
109 | |
110 return NGX_HTTP_FORBIDDEN; | |
111 } | |
112 | |
113 return NGX_OK; | |
114 } | |
115 } | |
116 | |
117 return NGX_OK; | |
118 } | |
119 | |
120 | |
121 static char * | |
122 ngx_http_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
123 { | |
124 ngx_http_access_loc_conf_t *alcf = conf; | |
125 | |
126 ngx_str_t *value; | |
127 ngx_inet_cidr_t in_cidr; | |
128 ngx_http_access_rule_t *rule; | |
129 | |
130 if (alcf->rules == NULL) { | |
131 alcf->rules = ngx_array_create(cf->pool, 4, | |
132 sizeof(ngx_http_access_rule_t)); | |
133 if (alcf->rules == NULL) { | |
134 return NGX_CONF_ERROR; | |
135 } | |
136 } | |
137 | |
138 rule = ngx_array_push(alcf->rules); | |
139 if (rule == NULL) { | |
140 return NGX_CONF_ERROR; | |
141 } | |
142 | |
143 value = cf->args->elts; | |
144 | |
145 rule->deny = (value[0].data[0] == 'd') ? 1 : 0; | |
146 | |
147 if (value[1].len == 3 && ngx_strcmp(value[1].data, "all") == 0) { | |
148 rule->mask = 0; | |
149 rule->addr = 0; | |
150 | |
151 return NGX_CONF_OK; | |
152 } | |
153 | |
154 rule->addr = inet_addr((char *) value[1].data); | |
155 | |
156 if (rule->addr != INADDR_NONE) { | |
157 rule->mask = 0xffffffff; | |
158 | |
159 return NGX_CONF_OK; | |
160 } | |
161 | |
162 if (ngx_ptocidr(&value[1], &in_cidr) == NGX_ERROR) { | |
163 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", | |
164 &value[1]); | |
165 return NGX_CONF_ERROR; | |
166 } | |
167 | |
168 rule->mask = in_cidr.mask; | |
169 rule->addr = in_cidr.addr; | |
170 | |
171 return NGX_CONF_OK; | |
172 } | |
173 | |
174 | |
175 static void * | |
176 ngx_http_access_create_loc_conf(ngx_conf_t *cf) | |
177 { | |
178 ngx_http_access_loc_conf_t *conf; | |
179 | |
180 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_access_loc_conf_t)); | |
181 if (conf == NULL) { | |
182 return NGX_CONF_ERROR; | |
183 } | |
184 | |
185 return conf; | |
186 } | |
187 | |
188 | |
189 static char * | |
190 ngx_http_access_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
191 { | |
192 ngx_http_access_loc_conf_t *prev = parent; | |
193 ngx_http_access_loc_conf_t *conf = child; | |
194 | |
195 if (conf->rules == NULL) { | |
196 conf->rules = prev->rules; | |
197 } | |
198 | |
199 return NGX_CONF_OK; | |
200 } | |
201 | |
202 | |
203 static ngx_int_t | |
204 ngx_http_access_init(ngx_cycle_t *cycle) | |
205 { | |
206 ngx_http_handler_pt *h; | |
207 ngx_http_core_main_conf_t *cmcf; | |
208 | |
209 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module); | |
210 | |
211 h = ngx_array_push(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers); | |
212 if (h == NULL) { | |
213 return NGX_ERROR; | |
214 } | |
215 | |
216 *h = ngx_http_access_handler; | |
217 | |
218 return NGX_OK; | |
219 } |