Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_access_module.c @ 4075:39574a944f66
Version bump.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 05 Sep 2011 16:26:51 +0000 |
parents | bab3488bd113 |
children | d620f497c50f |
rev | line source |
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441
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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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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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10 |
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11 |
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12 typedef struct { |
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13 in_addr_t mask; |
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14 in_addr_t addr; |
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15 ngx_uint_t deny; /* unsigned deny:1; */ |
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16 } ngx_http_access_rule_t; |
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17 |
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18 #if (NGX_HAVE_INET6) |
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19 |
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20 typedef struct { |
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21 struct in6_addr addr; |
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22 struct in6_addr mask; |
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23 ngx_uint_t deny; /* unsigned deny:1; */ |
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24 } ngx_http_access_rule6_t; |
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25 |
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26 #endif |
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27 |
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28 typedef struct { |
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29 ngx_array_t *rules; /* array of ngx_http_access_rule_t */ |
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30 #if (NGX_HAVE_INET6) |
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31 ngx_array_t *rules6; /* array of ngx_http_access_rule6_t */ |
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32 #endif |
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33 } ngx_http_access_loc_conf_t; |
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34 |
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35 |
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36 static ngx_int_t ngx_http_access_handler(ngx_http_request_t *r); |
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37 static ngx_int_t ngx_http_access_inet(ngx_http_request_t *r, |
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38 ngx_http_access_loc_conf_t *alcf, in_addr_t addr); |
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39 #if (NGX_HAVE_INET6) |
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40 static ngx_int_t ngx_http_access_inet6(ngx_http_request_t *r, |
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41 ngx_http_access_loc_conf_t *alcf, u_char *p); |
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42 #endif |
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43 static ngx_int_t ngx_http_access_found(ngx_http_request_t *r, ngx_uint_t deny); |
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44 static char *ngx_http_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, |
501 | 45 void *conf); |
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46 static void *ngx_http_access_create_loc_conf(ngx_conf_t *cf); |
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47 static char *ngx_http_access_merge_loc_conf(ngx_conf_t *cf, |
501 | 48 void *parent, void *child); |
681 | 49 static ngx_int_t ngx_http_access_init(ngx_conf_t *cf); |
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50 |
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51 |
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52 static ngx_command_t ngx_http_access_commands[] = { |
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53 |
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54 { ngx_string("allow"), |
631 | 55 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF |
56 |NGX_CONF_TAKE1, | |
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57 ngx_http_access_rule, |
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58 NGX_HTTP_LOC_CONF_OFFSET, |
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59 0, |
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60 NULL }, |
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61 |
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62 { ngx_string("deny"), |
631 | 63 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF |
64 |NGX_CONF_TAKE1, | |
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65 ngx_http_access_rule, |
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66 NGX_HTTP_LOC_CONF_OFFSET, |
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67 0, |
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68 NULL }, |
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69 |
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70 ngx_null_command |
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71 }; |
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72 |
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73 |
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74 |
667 | 75 static ngx_http_module_t ngx_http_access_module_ctx = { |
509 | 76 NULL, /* preconfiguration */ |
681 | 77 ngx_http_access_init, /* postconfiguration */ |
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78 |
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79 NULL, /* create main configuration */ |
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80 NULL, /* init main configuration */ |
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81 |
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82 NULL, /* create server configuration */ |
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83 NULL, /* merge server configuration */ |
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84 |
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85 ngx_http_access_create_loc_conf, /* create location configuration */ |
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86 ngx_http_access_merge_loc_conf /* merge location configuration */ |
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87 }; |
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88 |
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89 |
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90 ngx_module_t ngx_http_access_module = { |
509 | 91 NGX_MODULE_V1, |
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92 &ngx_http_access_module_ctx, /* module context */ |
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93 ngx_http_access_commands, /* module directives */ |
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94 NGX_HTTP_MODULE, /* module type */ |
541 | 95 NULL, /* init master */ |
681 | 96 NULL, /* init module */ |
541 | 97 NULL, /* init process */ |
98 NULL, /* init thread */ | |
99 NULL, /* exit thread */ | |
100 NULL, /* exit process */ | |
101 NULL, /* exit master */ | |
102 NGX_MODULE_V1_PADDING | |
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103 }; |
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104 |
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105 |
501 | 106 static ngx_int_t |
107 ngx_http_access_handler(ngx_http_request_t *r) | |
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108 { |
479 | 109 struct sockaddr_in *sin; |
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110 ngx_http_access_loc_conf_t *alcf; |
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111 #if (NGX_HAVE_INET6) |
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112 u_char *p; |
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113 in_addr_t addr; |
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114 struct sockaddr_in6 *sin6; |
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115 #endif |
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116 |
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117 alcf = ngx_http_get_module_loc_conf(r, ngx_http_access_module); |
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118 |
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119 switch (r->connection->sockaddr->sa_family) { |
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120 |
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121 case AF_INET: |
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122 if (alcf->rules) { |
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123 sin = (struct sockaddr_in *) r->connection->sockaddr; |
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124 return ngx_http_access_inet(r, alcf, sin->sin_addr.s_addr); |
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125 } |
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126 break; |
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127 |
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128 #if (NGX_HAVE_INET6) |
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129 |
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130 case AF_INET6: |
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131 sin6 = (struct sockaddr_in6 *) r->connection->sockaddr; |
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132 p = sin6->sin6_addr.s6_addr; |
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133 |
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134 if (alcf->rules && IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { |
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135 addr = p[12] << 24; |
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136 addr += p[13] << 16; |
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137 addr += p[14] << 8; |
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138 addr += p[15]; |
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139 return ngx_http_access_inet(r, alcf, htonl(addr)); |
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140 } |
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141 |
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142 if (alcf->rules6) { |
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143 return ngx_http_access_inet6(r, alcf, p); |
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144 } |
368
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145 |
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146 #endif |
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147 } |
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148 |
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149 return NGX_DECLINED; |
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150 } |
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151 |
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152 |
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153 static ngx_int_t |
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154 ngx_http_access_inet(ngx_http_request_t *r, ngx_http_access_loc_conf_t *alcf, |
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155 in_addr_t addr) |
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156 { |
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157 ngx_uint_t i; |
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158 ngx_http_access_rule_t *rule; |
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159 |
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160 rule = alcf->rules->elts; |
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161 for (i = 0; i < alcf->rules->nelts; i++) { |
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162 |
461 | 163 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
573 | 164 "access: %08XD %08XD %08XD", |
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165 addr, rule[i].mask, rule[i].addr); |
663 | 166 |
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167 if ((addr & rule[i].mask) == rule[i].addr) { |
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168 return ngx_http_access_found(r, rule[i].deny); |
368
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169 } |
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170 } |
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171 |
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172 return NGX_DECLINED; |
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173 } |
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174 |
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175 |
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176 #if (NGX_HAVE_INET6) |
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177 |
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178 static ngx_int_t |
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179 ngx_http_access_inet6(ngx_http_request_t *r, ngx_http_access_loc_conf_t *alcf, |
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180 u_char *p) |
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181 { |
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182 ngx_uint_t n; |
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183 ngx_uint_t i; |
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184 ngx_http_access_rule6_t *rule6; |
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185 |
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186 rule6 = alcf->rules6->elts; |
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187 for (i = 0; i < alcf->rules6->nelts; i++) { |
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188 |
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189 #if (NGX_DEBUG) |
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190 { |
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191 size_t cl, ml, al; |
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192 u_char ct[NGX_INET6_ADDRSTRLEN]; |
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193 u_char mt[NGX_INET6_ADDRSTRLEN]; |
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194 u_char at[NGX_INET6_ADDRSTRLEN]; |
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195 |
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196 cl = ngx_inet6_ntop(p, ct, NGX_INET6_ADDRSTRLEN); |
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197 ml = ngx_inet6_ntop(rule6[i].mask.s6_addr, mt, NGX_INET6_ADDRSTRLEN); |
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198 al = ngx_inet6_ntop(rule6[i].addr.s6_addr, at, NGX_INET6_ADDRSTRLEN); |
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199 |
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201 "access: %*s %*s %*s", cl, ct, ml, mt, al, at); |
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202 } |
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203 #endif |
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204 |
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205 for (n = 0; n < 16; n++) { |
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206 if ((p[n] & rule6[i].mask.s6_addr[n]) != rule6[i].addr.s6_addr[n]) { |
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207 goto next; |
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208 } |
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209 } |
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210 |
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211 return ngx_http_access_found(r, rule6[i].deny); |
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212 |
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213 next: |
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214 continue; |
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215 } |
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216 |
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217 return NGX_DECLINED; |
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218 } |
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219 |
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220 #endif |
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221 |
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222 |
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223 static ngx_int_t |
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224 ngx_http_access_found(ngx_http_request_t *r, ngx_uint_t deny) |
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225 { |
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226 ngx_http_core_loc_conf_t *clcf; |
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227 |
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228 if (deny) { |
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229 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
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230 |
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231 if (clcf->satisfy == NGX_HTTP_SATISFY_ALL) { |
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232 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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233 "access forbidden by rule"); |
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234 } |
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235 |
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236 return NGX_HTTP_FORBIDDEN; |
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237 } |
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238 |
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239 return NGX_OK; |
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240 } |
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241 |
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242 |
501 | 243 static char * |
244 ngx_http_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
368
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245 { |
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246 ngx_http_access_loc_conf_t *alcf = conf; |
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247 |
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248 ngx_int_t rc; |
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249 ngx_uint_t all; |
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250 ngx_str_t *value; |
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251 ngx_cidr_t cidr; |
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252 ngx_http_access_rule_t *rule; |
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253 #if (NGX_HAVE_INET6) |
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254 ngx_http_access_rule6_t *rule6; |
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255 #endif |
368
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256 |
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257 ngx_memzero(&cidr, sizeof(ngx_cidr_t)); |
368
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258 |
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259 value = cf->args->elts; |
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260 |
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261 all = (value[1].len == 3 && ngx_strcmp(value[1].data, "all") == 0); |
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262 |
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263 if (!all) { |
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264 |
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265 rc = ngx_ptocidr(&value[1], &cidr); |
368
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266 |
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267 if (rc == NGX_ERROR) { |
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268 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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269 "invalid parameter \"%V\"", &value[1]); |
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270 return NGX_CONF_ERROR; |
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271 } |
368
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272 |
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273 if (rc == NGX_DONE) { |
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274 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
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275 "low address bits of %V are meaningless", &value[1]); |
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276 } |
368
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277 } |
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278 |
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279 switch (cidr.family) { |
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280 |
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281 #if (NGX_HAVE_INET6) |
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282 case AF_INET6: |
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283 case 0: /* all */ |
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284 |
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285 if (alcf->rules6 == NULL) { |
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286 alcf->rules6 = ngx_array_create(cf->pool, 4, |
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287 sizeof(ngx_http_access_rule6_t)); |
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288 if (alcf->rules6 == NULL) { |
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289 return NGX_CONF_ERROR; |
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290 } |
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291 } |
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292 |
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293 rule6 = ngx_array_push(alcf->rules6); |
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294 if (rule6 == NULL) { |
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295 return NGX_CONF_ERROR; |
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296 } |
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297 |
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298 rule6->mask = cidr.u.in6.mask; |
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299 rule6->addr = cidr.u.in6.addr; |
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300 rule6->deny = (value[0].data[0] == 'd') ? 1 : 0; |
368
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301 |
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302 if (!all) { |
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303 break; |
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304 } |
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305 |
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306 /* "all" passes through */ |
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307 #endif |
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308 |
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309 default: /* AF_INET */ |
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310 |
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311 if (alcf->rules == NULL) { |
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312 alcf->rules = ngx_array_create(cf->pool, 4, |
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313 sizeof(ngx_http_access_rule_t)); |
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314 if (alcf->rules == NULL) { |
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315 return NGX_CONF_ERROR; |
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316 } |
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317 } |
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318 |
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319 rule = ngx_array_push(alcf->rules); |
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320 if (rule == NULL) { |
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321 return NGX_CONF_ERROR; |
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322 } |
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323 |
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324 rule->mask = cidr.u.in.mask; |
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325 rule->addr = cidr.u.in.addr; |
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326 rule->deny = (value[0].data[0] == 'd') ? 1 : 0; |
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327 } |
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328 |
368
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329 return NGX_CONF_OK; |
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330 } |
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331 |
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332 |
501 | 333 static void * |
334 ngx_http_access_create_loc_conf(ngx_conf_t *cf) | |
368
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335 { |
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336 ngx_http_access_loc_conf_t *conf; |
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337 |
501 | 338 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_access_loc_conf_t)); |
339 if (conf == NULL) { | |
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340 return NULL; |
368
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341 } |
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342 |
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343 return conf; |
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344 } |
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345 |
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346 |
501 | 347 static char * |
348 ngx_http_access_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
368
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349 { |
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350 ngx_http_access_loc_conf_t *prev = parent; |
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351 ngx_http_access_loc_conf_t *conf = child; |
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352 |
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353 if (conf->rules == NULL) { |
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354 conf->rules = prev->rules; |
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355 } |
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356 |
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357 #if (NGX_HAVE_INET6) |
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Igor Sysoev <igor@sysoev.ru>
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358 if (conf->rules6 == NULL) { |
ab9f5a715805
IPv6 support in ngx_http_access_module
Igor Sysoev <igor@sysoev.ru>
parents:
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359 conf->rules6 = prev->rules6; |
ab9f5a715805
IPv6 support in ngx_http_access_module
Igor Sysoev <igor@sysoev.ru>
parents:
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360 } |
ab9f5a715805
IPv6 support in ngx_http_access_module
Igor Sysoev <igor@sysoev.ru>
parents:
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361 #endif |
ab9f5a715805
IPv6 support in ngx_http_access_module
Igor Sysoev <igor@sysoev.ru>
parents:
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362 |
368
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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363 return NGX_CONF_OK; |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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364 } |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
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changeset
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365 |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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366 |
501 | 367 static ngx_int_t |
681 | 368 ngx_http_access_init(ngx_conf_t *cf) |
368
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nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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369 { |
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nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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370 ngx_http_handler_pt *h; |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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371 ngx_http_core_main_conf_t *cmcf; |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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372 |
681 | 373 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
368
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nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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374 |
501 | 375 h = ngx_array_push(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers); |
368
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nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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376 if (h == NULL) { |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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377 return NGX_ERROR; |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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378 } |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
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379 |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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380 *h = ngx_http_access_handler; |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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381 |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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382 return NGX_OK; |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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383 } |