annotate 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
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2 /*
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3 * Copyright (C) Igor Sysoev
441
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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12 /* AF_INET only */
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13
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14 typedef struct {
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15 in_addr_t mask;
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16 in_addr_t addr;
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17 unsigned deny;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
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18 } ngx_http_access_rule_t;
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19
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21 typedef struct {
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22 ngx_array_t *rules; /* array of ngx_http_access_rule_t */
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23 } ngx_http_access_loc_conf_t;
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24
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25
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26 static ngx_int_t ngx_http_access_handler(ngx_http_request_t *r);
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27 static char *ngx_http_access_rule(ngx_conf_t *cf, ngx_command_t *cmd,
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28 void *conf);
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29 static void *ngx_http_access_create_loc_conf(ngx_conf_t *cf);
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30 static char *ngx_http_access_merge_loc_conf(ngx_conf_t *cf,
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31 void *parent, void *child);
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32 static ngx_int_t ngx_http_access_init(ngx_cycle_t *cycle);
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33
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34
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35 static ngx_command_t ngx_http_access_commands[] = {
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36
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37 { ngx_string("allow"),
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38 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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39 ngx_http_access_rule,
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40 NGX_HTTP_LOC_CONF_OFFSET,
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41 0,
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42 NULL },
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43
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44 { ngx_string("deny"),
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45 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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46 ngx_http_access_rule,
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47 NGX_HTTP_LOC_CONF_OFFSET,
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48 0,
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49 NULL },
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50
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51 ngx_null_command
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52 };
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53
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55
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56 ngx_http_module_t ngx_http_access_module_ctx = {
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57 NULL, /* pre conf */
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58
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59 NULL, /* create main configuration */
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60 NULL, /* init main configuration */
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61
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62 NULL, /* create server configuration */
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63 NULL, /* merge server configuration */
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64
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65 ngx_http_access_create_loc_conf, /* create location configuration */
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66 ngx_http_access_merge_loc_conf /* merge location configuration */
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67 };
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68
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69
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70 ngx_module_t ngx_http_access_module = {
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71 NGX_MODULE,
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72 &ngx_http_access_module_ctx, /* module context */
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73 ngx_http_access_commands, /* module directives */
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74 NGX_HTTP_MODULE, /* module type */
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75 ngx_http_access_init, /* init module */
408
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76 NULL /* init process */
368
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77 };
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78
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79
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80 static ngx_int_t
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81 ngx_http_access_handler(ngx_http_request_t *r)
368
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82 {
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83 ngx_uint_t i;
479
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84 struct sockaddr_in *sin;
368
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85 ngx_http_access_rule_t *rule;
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86 ngx_http_access_loc_conf_t *alcf;
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87
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88 alcf = ngx_http_get_module_loc_conf(r, ngx_http_access_module);
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89
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90 if (alcf->rules == NULL) {
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91 return NGX_OK;
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92 }
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93
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94 /* AF_INET only */
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95
479
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96 sin = (struct sockaddr_in *) r->connection->sockaddr;
368
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97
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98 rule = alcf->rules->elts;
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99 for (i = 0; i < alcf->rules->nelts; i++) {
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100
461
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101 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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102 "%08XD %08XD %08XD",
479
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103 sin->sin_addr.s_addr, rule[i].mask, rule[i].addr);
404
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104
479
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105 if ((sin->sin_addr.s_addr & rule[i].mask) == rule[i].addr) {
368
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106 if (rule[i].deny) {
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107 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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108 "access forbidden by rule");
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109
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110 return NGX_HTTP_FORBIDDEN;
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111 }
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112
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113 return NGX_OK;
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diff changeset
114 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
115 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
116
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
117 return NGX_OK;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
118 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
119
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
120
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
121 static char *
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
122 ngx_http_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
368
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
123 {
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
124 ngx_http_access_loc_conf_t *alcf = conf;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
125
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
126 ngx_str_t *value;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
127 ngx_inet_cidr_t in_cidr;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
128 ngx_http_access_rule_t *rule;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
129
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
130 if (alcf->rules == NULL) {
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
131 alcf->rules = ngx_array_create(cf->pool, 4,
368
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
132 sizeof(ngx_http_access_rule_t));
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
133 if (alcf->rules == NULL) {
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
134 return NGX_CONF_ERROR;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
135 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
136 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
137
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
138 rule = ngx_array_push(alcf->rules);
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
139 if (rule == NULL) {
368
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
140 return NGX_CONF_ERROR;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
141 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
142
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
143 value = cf->args->elts;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
144
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
145 rule->deny = (value[0].data[0] == 'd') ? 1 : 0;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
146
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
147 if (value[1].len == 3 && ngx_strcmp(value[1].data, "all") == 0) {
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
148 rule->mask = 0;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
149 rule->addr = 0;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
150
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
151 return NGX_CONF_OK;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
152 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
153
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
154 rule->addr = inet_addr((char *) value[1].data);
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
155
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
156 if (rule->addr != INADDR_NONE) {
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
157 rule->mask = 0xffffffff;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
158
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
159 return NGX_CONF_OK;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
160 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
161
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
162 if (ngx_ptocidr(&value[1], &in_cidr) == NGX_ERROR) {
485
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
163 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"",
461
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
164 &value[1]);
368
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
165 return NGX_CONF_ERROR;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
166 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
167
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
168 rule->mask = in_cidr.mask;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
169 rule->addr = in_cidr.addr;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
170
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
171 return NGX_CONF_OK;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
172 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
173
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
174
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
175 static void *
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
176 ngx_http_access_create_loc_conf(ngx_conf_t *cf)
368
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
177 {
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
178 ngx_http_access_loc_conf_t *conf;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
179
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
180 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_access_loc_conf_t));
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
181 if (conf == NULL) {
368
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
182 return NGX_CONF_ERROR;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
183 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
184
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
185 return conf;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
186 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
187
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
188
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
189 static char *
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
190 ngx_http_access_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
368
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
191 {
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
192 ngx_http_access_loc_conf_t *prev = parent;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
193 ngx_http_access_loc_conf_t *conf = child;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
194
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
195 if (conf->rules == NULL) {
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
196 conf->rules = prev->rules;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
197 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
198
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
199 return NGX_CONF_OK;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
200 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
201
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
202
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
203 static ngx_int_t
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
204 ngx_http_access_init(ngx_cycle_t *cycle)
368
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
205 {
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
206 ngx_http_handler_pt *h;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
207 ngx_http_core_main_conf_t *cmcf;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
208
393
5659d773cfa8 nginx-0.0.7-2004-07-15-20:35:51 import
Igor Sysoev <igor@sysoev.ru>
parents: 368
diff changeset
209 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);
368
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
210
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
211 h = ngx_array_push(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers);
368
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
212 if (h == NULL) {
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
213 return NGX_ERROR;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
214 }
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
215
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
216 *h = ngx_http_access_handler;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
217
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
218 return NGX_OK;
15c84a40e87d nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
219 }