Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_access_module.c @ 5202:322434f13bd8
Mp4: indentation and style, no functional changes.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Sat, 11 May 2013 18:49:49 +0400 |
parents | ae60a1085c82 |
children | 00dbfac67e48 |
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 |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_http.h> |
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11 |
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12 |
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13 typedef struct { |
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14 in_addr_t mask; |
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15 in_addr_t addr; |
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16 ngx_uint_t deny; /* unsigned deny:1; */ |
368
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17 } ngx_http_access_rule_t; |
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18 |
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19 #if (NGX_HAVE_INET6) |
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20 |
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21 typedef struct { |
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22 struct in6_addr addr; |
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23 struct in6_addr mask; |
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24 ngx_uint_t deny; /* unsigned deny:1; */ |
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25 } ngx_http_access_rule6_t; |
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26 |
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27 #endif |
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28 |
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29 typedef struct { |
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30 ngx_array_t *rules; /* array of ngx_http_access_rule_t */ |
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31 #if (NGX_HAVE_INET6) |
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32 ngx_array_t *rules6; /* array of ngx_http_access_rule6_t */ |
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33 #endif |
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34 } ngx_http_access_loc_conf_t; |
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35 |
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36 |
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37 static ngx_int_t ngx_http_access_handler(ngx_http_request_t *r); |
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38 static ngx_int_t ngx_http_access_inet(ngx_http_request_t *r, |
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39 ngx_http_access_loc_conf_t *alcf, in_addr_t addr); |
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40 #if (NGX_HAVE_INET6) |
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41 static ngx_int_t ngx_http_access_inet6(ngx_http_request_t *r, |
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42 ngx_http_access_loc_conf_t *alcf, u_char *p); |
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43 #endif |
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44 static ngx_int_t ngx_http_access_found(ngx_http_request_t *r, ngx_uint_t deny); |
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45 static char *ngx_http_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, |
501 | 46 void *conf); |
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47 static void *ngx_http_access_create_loc_conf(ngx_conf_t *cf); |
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48 static char *ngx_http_access_merge_loc_conf(ngx_conf_t *cf, |
501 | 49 void *parent, void *child); |
681 | 50 static ngx_int_t ngx_http_access_init(ngx_conf_t *cf); |
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51 |
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52 |
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53 static ngx_command_t ngx_http_access_commands[] = { |
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54 |
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55 { ngx_string("allow"), |
631 | 56 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF |
57 |NGX_CONF_TAKE1, | |
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58 ngx_http_access_rule, |
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59 NGX_HTTP_LOC_CONF_OFFSET, |
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60 0, |
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61 NULL }, |
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62 |
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63 { ngx_string("deny"), |
631 | 64 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF |
65 |NGX_CONF_TAKE1, | |
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66 ngx_http_access_rule, |
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67 NGX_HTTP_LOC_CONF_OFFSET, |
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68 0, |
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69 NULL }, |
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70 |
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71 ngx_null_command |
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72 }; |
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73 |
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74 |
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75 |
667 | 76 static ngx_http_module_t ngx_http_access_module_ctx = { |
509 | 77 NULL, /* preconfiguration */ |
681 | 78 ngx_http_access_init, /* postconfiguration */ |
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79 |
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80 NULL, /* create main configuration */ |
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81 NULL, /* init main configuration */ |
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82 |
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83 NULL, /* create server configuration */ |
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84 NULL, /* merge server configuration */ |
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85 |
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86 ngx_http_access_create_loc_conf, /* create location configuration */ |
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87 ngx_http_access_merge_loc_conf /* merge location configuration */ |
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88 }; |
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89 |
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90 |
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91 ngx_module_t ngx_http_access_module = { |
509 | 92 NGX_MODULE_V1, |
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93 &ngx_http_access_module_ctx, /* module context */ |
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94 ngx_http_access_commands, /* module directives */ |
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95 NGX_HTTP_MODULE, /* module type */ |
541 | 96 NULL, /* init master */ |
681 | 97 NULL, /* init module */ |
541 | 98 NULL, /* init process */ |
99 NULL, /* init thread */ | |
100 NULL, /* exit thread */ | |
101 NULL, /* exit process */ | |
102 NULL, /* exit master */ | |
103 NGX_MODULE_V1_PADDING | |
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104 }; |
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105 |
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106 |
501 | 107 static ngx_int_t |
108 ngx_http_access_handler(ngx_http_request_t *r) | |
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109 { |
479 | 110 struct sockaddr_in *sin; |
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111 ngx_http_access_loc_conf_t *alcf; |
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112 #if (NGX_HAVE_INET6) |
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113 u_char *p; |
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114 in_addr_t addr; |
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115 struct sockaddr_in6 *sin6; |
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116 #endif |
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117 |
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118 alcf = ngx_http_get_module_loc_conf(r, ngx_http_access_module); |
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119 |
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120 switch (r->connection->sockaddr->sa_family) { |
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121 |
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122 case AF_INET: |
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123 if (alcf->rules) { |
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124 sin = (struct sockaddr_in *) r->connection->sockaddr; |
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125 return ngx_http_access_inet(r, alcf, sin->sin_addr.s_addr); |
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126 } |
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127 break; |
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128 |
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129 #if (NGX_HAVE_INET6) |
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130 |
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131 case AF_INET6: |
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132 sin6 = (struct sockaddr_in6 *) r->connection->sockaddr; |
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133 p = sin6->sin6_addr.s6_addr; |
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134 |
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135 if (alcf->rules && IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { |
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136 addr = p[12] << 24; |
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137 addr += p[13] << 16; |
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138 addr += p[14] << 8; |
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139 addr += p[15]; |
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140 return ngx_http_access_inet(r, alcf, htonl(addr)); |
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141 } |
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142 |
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143 if (alcf->rules6) { |
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144 return ngx_http_access_inet6(r, alcf, p); |
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145 } |
368
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146 |
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147 #endif |
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148 } |
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149 |
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150 return NGX_DECLINED; |
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151 } |
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152 |
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153 |
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154 static ngx_int_t |
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155 ngx_http_access_inet(ngx_http_request_t *r, ngx_http_access_loc_conf_t *alcf, |
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156 in_addr_t addr) |
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157 { |
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158 ngx_uint_t i; |
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159 ngx_http_access_rule_t *rule; |
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160 |
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161 rule = alcf->rules->elts; |
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162 for (i = 0; i < alcf->rules->nelts; i++) { |
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163 |
461 | 164 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
573 | 165 "access: %08XD %08XD %08XD", |
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166 addr, rule[i].mask, rule[i].addr); |
663 | 167 |
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168 if ((addr & rule[i].mask) == rule[i].addr) { |
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169 return ngx_http_access_found(r, rule[i].deny); |
368
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170 } |
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171 } |
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172 |
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173 return NGX_DECLINED; |
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174 } |
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175 |
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176 |
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177 #if (NGX_HAVE_INET6) |
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178 |
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179 static ngx_int_t |
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180 ngx_http_access_inet6(ngx_http_request_t *r, ngx_http_access_loc_conf_t *alcf, |
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181 u_char *p) |
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182 { |
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183 ngx_uint_t n; |
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184 ngx_uint_t i; |
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185 ngx_http_access_rule6_t *rule6; |
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186 |
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187 rule6 = alcf->rules6->elts; |
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188 for (i = 0; i < alcf->rules6->nelts; i++) { |
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189 |
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190 #if (NGX_DEBUG) |
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191 { |
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192 size_t cl, ml, al; |
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193 u_char ct[NGX_INET6_ADDRSTRLEN]; |
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194 u_char mt[NGX_INET6_ADDRSTRLEN]; |
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195 u_char at[NGX_INET6_ADDRSTRLEN]; |
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196 |
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197 cl = ngx_inet6_ntop(p, ct, NGX_INET6_ADDRSTRLEN); |
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198 ml = ngx_inet6_ntop(rule6[i].mask.s6_addr, mt, NGX_INET6_ADDRSTRLEN); |
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199 al = ngx_inet6_ntop(rule6[i].addr.s6_addr, at, NGX_INET6_ADDRSTRLEN); |
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200 |
3685 | 201 ngx_log_debug6(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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202 "access: %*s %*s %*s", cl, ct, ml, mt, al, at); |
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203 } |
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204 #endif |
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205 |
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206 for (n = 0; n < 16; n++) { |
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207 if ((p[n] & rule6[i].mask.s6_addr[n]) != rule6[i].addr.s6_addr[n]) { |
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208 goto next; |
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209 } |
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210 } |
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211 |
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212 return ngx_http_access_found(r, rule6[i].deny); |
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213 |
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214 next: |
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215 continue; |
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216 } |
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217 |
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218 return NGX_DECLINED; |
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219 } |
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220 |
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221 #endif |
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222 |
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223 |
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224 static ngx_int_t |
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225 ngx_http_access_found(ngx_http_request_t *r, ngx_uint_t deny) |
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226 { |
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227 ngx_http_core_loc_conf_t *clcf; |
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228 |
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229 if (deny) { |
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230 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
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231 |
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232 if (clcf->satisfy == NGX_HTTP_SATISFY_ALL) { |
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233 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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234 "access forbidden by rule"); |
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235 } |
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236 |
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237 return NGX_HTTP_FORBIDDEN; |
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238 } |
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239 |
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240 return NGX_OK; |
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241 } |
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242 |
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243 |
501 | 244 static char * |
245 ngx_http_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
368
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246 { |
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247 ngx_http_access_loc_conf_t *alcf = conf; |
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248 |
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249 ngx_int_t rc; |
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250 ngx_uint_t all; |
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251 ngx_str_t *value; |
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252 ngx_cidr_t cidr; |
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253 ngx_http_access_rule_t *rule; |
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254 #if (NGX_HAVE_INET6) |
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255 ngx_http_access_rule6_t *rule6; |
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256 #endif |
368
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257 |
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258 ngx_memzero(&cidr, sizeof(ngx_cidr_t)); |
368
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259 |
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260 value = cf->args->elts; |
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261 |
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262 all = (value[1].len == 3 && ngx_strcmp(value[1].data, "all") == 0); |
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263 |
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264 if (!all) { |
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265 |
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266 rc = ngx_ptocidr(&value[1], &cidr); |
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267 |
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268 if (rc == NGX_ERROR) { |
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269 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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270 "invalid parameter \"%V\"", &value[1]); |
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271 return NGX_CONF_ERROR; |
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272 } |
368
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273 |
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274 if (rc == NGX_DONE) { |
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275 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
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276 "low address bits of %V are meaningless", &value[1]); |
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277 } |
368
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278 } |
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279 |
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280 switch (cidr.family) { |
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281 |
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282 #if (NGX_HAVE_INET6) |
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283 case AF_INET6: |
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284 case 0: /* all */ |
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285 |
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286 if (alcf->rules6 == NULL) { |
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287 alcf->rules6 = ngx_array_create(cf->pool, 4, |
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288 sizeof(ngx_http_access_rule6_t)); |
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289 if (alcf->rules6 == NULL) { |
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290 return NGX_CONF_ERROR; |
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291 } |
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292 } |
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293 |
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294 rule6 = ngx_array_push(alcf->rules6); |
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295 if (rule6 == NULL) { |
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296 return NGX_CONF_ERROR; |
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297 } |
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298 |
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299 rule6->mask = cidr.u.in6.mask; |
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300 rule6->addr = cidr.u.in6.addr; |
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301 rule6->deny = (value[0].data[0] == 'd') ? 1 : 0; |
368
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302 |
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303 if (!all) { |
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304 break; |
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305 } |
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306 |
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307 /* "all" passes through */ |
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308 #endif |
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309 |
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310 default: /* AF_INET */ |
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311 |
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312 if (alcf->rules == NULL) { |
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313 alcf->rules = ngx_array_create(cf->pool, 4, |
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314 sizeof(ngx_http_access_rule_t)); |
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315 if (alcf->rules == NULL) { |
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316 return NGX_CONF_ERROR; |
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317 } |
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318 } |
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319 |
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320 rule = ngx_array_push(alcf->rules); |
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321 if (rule == NULL) { |
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322 return NGX_CONF_ERROR; |
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323 } |
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324 |
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325 rule->mask = cidr.u.in.mask; |
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326 rule->addr = cidr.u.in.addr; |
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327 rule->deny = (value[0].data[0] == 'd') ? 1 : 0; |
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328 } |
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329 |
368
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330 return NGX_CONF_OK; |
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331 } |
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332 |
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333 |
501 | 334 static void * |
335 ngx_http_access_create_loc_conf(ngx_conf_t *cf) | |
368
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336 { |
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337 ngx_http_access_loc_conf_t *conf; |
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338 |
501 | 339 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_access_loc_conf_t)); |
340 if (conf == NULL) { | |
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341 return NULL; |
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342 } |
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343 |
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344 return conf; |
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345 } |
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346 |
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347 |
501 | 348 static char * |
349 ngx_http_access_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
368
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350 { |
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351 ngx_http_access_loc_conf_t *prev = parent; |
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352 ngx_http_access_loc_conf_t *conf = child; |
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353 |
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354 #if (NGX_HAVE_INET6) |
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355 |
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356 if (conf->rules == NULL && conf->rules6 == NULL) { |
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357 conf->rules = prev->rules; |
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358 conf->rules6 = prev->rules6; |
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359 } |
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360 |
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361 #else |
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362 |
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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363 if (conf->rules == NULL) { |
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nginx-0.0.7-2004-06-24-20:07:04 import
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364 conf->rules = prev->rules; |
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nginx-0.0.7-2004-06-24-20:07:04 import
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365 } |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
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366 |
3278
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IPv6 support in ngx_http_access_module
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367 #endif |
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368 |
368
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nginx-0.0.7-2004-06-24-20:07:04 import
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369 return NGX_CONF_OK; |
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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 } |
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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371 |
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nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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372 |
501 | 373 static ngx_int_t |
681 | 374 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>
parents:
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375 { |
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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 ngx_http_handler_pt *h; |
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nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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377 ngx_http_core_main_conf_t *cmcf; |
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nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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378 |
681 | 379 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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380 |
501 | 381 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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382 if (h == NULL) { |
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nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
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383 return NGX_ERROR; |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
384 } |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
385 |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
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386 *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
|
387 |
15c84a40e87d
nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
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388 return NGX_OK; |
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nginx-0.0.7-2004-06-24-20:07:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
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389 } |