Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_realip_module.c @ 6908:609daeb3b48b
Cache: increased cache header Vary and ETag lengths to 128.
This allows to store larger ETag values for proxy_cache_revalidate,
including ones generated as SHA256, and cache responses with longer
Vary (ticket #826).
In particular, this fixes caching of Amazon S3 responses with CORS
enabled, which now use "Vary: Origin, Access-Control-Request-Headers,
Access-Control-Request-Method".
Cache version bumped accordingly.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Fri, 10 Feb 2017 17:49:19 +0300 |
parents | cecf415643d7 |
children | df1a62c83b1b |
rev | line source |
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573 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
573 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_http.h> | |
11 | |
12 | |
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13 #define NGX_HTTP_REALIP_XREALIP 0 |
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14 #define NGX_HTTP_REALIP_XFWD 1 |
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15 #define NGX_HTTP_REALIP_HEADER 2 |
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16 #define NGX_HTTP_REALIP_PROXY 3 |
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17 |
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18 |
573 | 19 typedef struct { |
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20 ngx_array_t *from; /* array of ngx_cidr_t */ |
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21 ngx_uint_t type; |
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22 ngx_uint_t hash; |
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23 ngx_str_t header; |
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24 ngx_flag_t recursive; |
573 | 25 } ngx_http_realip_loc_conf_t; |
26 | |
27 | |
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28 typedef struct { |
3274 | 29 ngx_connection_t *connection; |
30 struct sockaddr *sockaddr; | |
31 socklen_t socklen; | |
32 ngx_str_t addr_text; | |
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33 } ngx_http_realip_ctx_t; |
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34 |
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35 |
573 | 36 static ngx_int_t ngx_http_realip_handler(ngx_http_request_t *r); |
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37 static ngx_int_t ngx_http_realip_set_addr(ngx_http_request_t *r, |
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38 ngx_addr_t *addr); |
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39 static void ngx_http_realip_cleanup(void *data); |
573 | 40 static char *ngx_http_realip_from(ngx_conf_t *cf, ngx_command_t *cmd, |
41 void *conf); | |
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42 static char *ngx_http_realip(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
573 | 43 static void *ngx_http_realip_create_loc_conf(ngx_conf_t *cf); |
44 static char *ngx_http_realip_merge_loc_conf(ngx_conf_t *cf, | |
45 void *parent, void *child); | |
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46 static ngx_int_t ngx_http_realip_add_variables(ngx_conf_t *cf); |
681 | 47 static ngx_int_t ngx_http_realip_init(ngx_conf_t *cf); |
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48 static ngx_http_realip_ctx_t *ngx_http_realip_get_module_ctx( |
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49 ngx_http_request_t *r); |
573 | 50 |
51 | |
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52 static ngx_int_t ngx_http_realip_remote_addr_variable(ngx_http_request_t *r, |
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53 ngx_http_variable_value_t *v, uintptr_t data); |
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54 static ngx_int_t ngx_http_realip_remote_port_variable(ngx_http_request_t *r, |
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55 ngx_http_variable_value_t *v, uintptr_t data); |
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56 |
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57 |
573 | 58 static ngx_command_t ngx_http_realip_commands[] = { |
59 | |
60 { ngx_string("set_real_ip_from"), | |
61 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
62 ngx_http_realip_from, | |
63 NGX_HTTP_LOC_CONF_OFFSET, | |
64 0, | |
65 NULL }, | |
66 | |
67 { ngx_string("real_ip_header"), | |
68 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
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69 ngx_http_realip, |
573 | 70 NGX_HTTP_LOC_CONF_OFFSET, |
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71 0, |
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72 NULL }, |
573 | 73 |
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74 { ngx_string("real_ip_recursive"), |
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75 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
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76 ngx_conf_set_flag_slot, |
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77 NGX_HTTP_LOC_CONF_OFFSET, |
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78 offsetof(ngx_http_realip_loc_conf_t, recursive), |
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79 NULL }, |
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80 |
573 | 81 ngx_null_command |
82 }; | |
83 | |
84 | |
85 | |
667 | 86 static ngx_http_module_t ngx_http_realip_module_ctx = { |
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87 ngx_http_realip_add_variables, /* preconfiguration */ |
681 | 88 ngx_http_realip_init, /* postconfiguration */ |
573 | 89 |
90 NULL, /* create main configuration */ | |
91 NULL, /* init main configuration */ | |
92 | |
93 NULL, /* create server configuration */ | |
94 NULL, /* merge server configuration */ | |
95 | |
96 ngx_http_realip_create_loc_conf, /* create location configuration */ | |
97 ngx_http_realip_merge_loc_conf /* merge location configuration */ | |
98 }; | |
99 | |
100 | |
101 ngx_module_t ngx_http_realip_module = { | |
102 NGX_MODULE_V1, | |
103 &ngx_http_realip_module_ctx, /* module context */ | |
104 ngx_http_realip_commands, /* module directives */ | |
105 NGX_HTTP_MODULE, /* module type */ | |
106 NULL, /* init master */ | |
681 | 107 NULL, /* init module */ |
573 | 108 NULL, /* init process */ |
109 NULL, /* init thread */ | |
110 NULL, /* exit thread */ | |
111 NULL, /* exit process */ | |
112 NULL, /* exit master */ | |
113 NGX_MODULE_V1_PADDING | |
114 }; | |
115 | |
116 | |
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117 static ngx_http_variable_t ngx_http_realip_vars[] = { |
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118 |
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119 { ngx_string("realip_remote_addr"), NULL, |
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120 ngx_http_realip_remote_addr_variable, 0, 0, 0 }, |
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121 |
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122 { ngx_string("realip_remote_port"), NULL, |
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123 ngx_http_realip_remote_port_variable, 0, 0, 0 }, |
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124 |
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125 { ngx_null_string, NULL, NULL, 0, 0, 0 } |
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126 }; |
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127 |
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128 |
573 | 129 static ngx_int_t |
130 ngx_http_realip_handler(ngx_http_request_t *r) | |
131 { | |
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132 u_char *p; |
573 | 133 size_t len; |
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134 ngx_str_t *value; |
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135 ngx_uint_t i, hash; |
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136 ngx_addr_t addr; |
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137 ngx_array_t *xfwd; |
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138 ngx_list_part_t *part; |
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139 ngx_table_elt_t *header; |
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140 ngx_connection_t *c; |
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141 ngx_http_realip_ctx_t *ctx; |
573 | 142 ngx_http_realip_loc_conf_t *rlcf; |
143 | |
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144 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_realip_module); |
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145 |
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146 if (rlcf->from == NULL) { |
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147 return NGX_DECLINED; |
573 | 148 } |
149 | |
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150 ctx = ngx_http_realip_get_module_ctx(r); |
573 | 151 |
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152 if (ctx) { |
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153 return NGX_DECLINED; |
573 | 154 } |
155 | |
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156 switch (rlcf->type) { |
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157 |
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158 case NGX_HTTP_REALIP_XREALIP: |
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159 |
573 | 160 if (r->headers_in.x_real_ip == NULL) { |
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161 return NGX_DECLINED; |
573 | 162 } |
163 | |
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164 value = &r->headers_in.x_real_ip->value; |
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165 xfwd = NULL; |
573 | 166 |
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167 break; |
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168 |
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169 case NGX_HTTP_REALIP_XFWD: |
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170 |
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171 xfwd = &r->headers_in.x_forwarded_for; |
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172 |
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173 if (xfwd->elts == NULL) { |
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174 return NGX_DECLINED; |
573 | 175 } |
176 | |
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177 value = NULL; |
573 | 178 |
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179 break; |
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180 |
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181 case NGX_HTTP_REALIP_PROXY: |
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182 |
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183 value = &r->connection->proxy_protocol_addr; |
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184 |
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185 if (value->len == 0) { |
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186 return NGX_DECLINED; |
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Added server-side support for PROXY protocol v1 (ticket #355).
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187 } |
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188 |
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Added server-side support for PROXY protocol v1 (ticket #355).
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189 xfwd = NULL; |
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190 |
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Added server-side support for PROXY protocol v1 (ticket #355).
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191 break; |
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192 |
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193 default: /* NGX_HTTP_REALIP_HEADER */ |
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194 |
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195 part = &r->headers_in.headers.part; |
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196 header = part->elts; |
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197 |
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198 hash = rlcf->hash; |
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199 len = rlcf->header.len; |
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200 p = rlcf->header.data; |
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201 |
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202 for (i = 0; /* void */ ; i++) { |
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203 |
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204 if (i >= part->nelts) { |
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205 if (part->next == NULL) { |
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206 break; |
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207 } |
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208 |
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209 part = part->next; |
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210 header = part->elts; |
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211 i = 0; |
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212 } |
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213 |
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214 if (hash == header[i].hash |
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215 && len == header[i].key.len |
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216 && ngx_strncmp(p, header[i].lowcase_key, len) == 0) |
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217 { |
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218 value = &header[i].value; |
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219 xfwd = NULL; |
2257
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220 |
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221 goto found; |
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222 } |
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223 } |
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224 |
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225 return NGX_DECLINED; |
573 | 226 } |
227 | |
2257
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228 found: |
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229 |
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230 c = r->connection; |
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231 |
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232 addr.sockaddr = c->sockaddr; |
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233 addr.socklen = c->socklen; |
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234 /* addr.name = c->addr_text; */ |
3274 | 235 |
5084
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236 if (ngx_http_get_forwarded_addr(r, &addr, xfwd, value, rlcf->from, |
4624
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237 rlcf->recursive) |
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|
238 != NGX_DECLINED) |
4624
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239 { |
6563
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Dmitry Volyntsev <xeioex@nginx.com>
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diff
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|
240 if (rlcf->type == NGX_HTTP_REALIP_PROXY) { |
6593
b3b7e33083ac
Introduced ngx_inet_get_port() and ngx_inet_set_port() functions.
Roman Arutyunyan <arut@nginx.com>
parents:
6565
diff
changeset
|
241 ngx_inet_set_port(addr.sockaddr, c->proxy_protocol_port); |
6563
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|
242 } |
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|
243 |
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244 return ngx_http_realip_set_addr(r, &addr); |
3274 | 245 } |
246 | |
247 return NGX_DECLINED; | |
248 } | |
249 | |
573 | 250 |
3274 | 251 static ngx_int_t |
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252 ngx_http_realip_set_addr(ngx_http_request_t *r, ngx_addr_t *addr) |
3274 | 253 { |
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254 size_t len; |
3274 | 255 u_char *p; |
4624
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|
256 u_char text[NGX_SOCKADDR_STRLEN]; |
3274 | 257 ngx_connection_t *c; |
258 ngx_pool_cleanup_t *cln; | |
259 ngx_http_realip_ctx_t *ctx; | |
573 | 260 |
3274 | 261 cln = ngx_pool_cleanup_add(r->pool, sizeof(ngx_http_realip_ctx_t)); |
262 if (cln == NULL) { | |
263 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
264 } | |
2176
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265 |
3274 | 266 ctx = cln->data; |
1114
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fix broken values, debug logging, and style fix
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diff
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|
267 |
3274 | 268 c = r->connection; |
269 | |
5263
05ba5bce31e0
Core: extended ngx_sock_ntop() with socklen parameter.
Vladimir Homutov <vl@nginx.com>
parents:
5084
diff
changeset
|
270 len = ngx_sock_ntop(addr->sockaddr, addr->socklen, text, |
05ba5bce31e0
Core: extended ngx_sock_ntop() with socklen parameter.
Vladimir Homutov <vl@nginx.com>
parents:
5084
diff
changeset
|
271 NGX_SOCKADDR_STRLEN, 0); |
4624
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272 if (len == 0) { |
3274 | 273 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
274 } | |
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275 |
3274 | 276 p = ngx_pnalloc(c->pool, len); |
277 if (p == NULL) { | |
278 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
279 } | |
1118
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a client address must be allocated from a connection pool
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280 |
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281 ngx_memcpy(p, text, len); |
2176
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282 |
3274 | 283 cln->handler = ngx_http_realip_cleanup; |
6671
6b1b8c4b7a95
Realip: fixed uninitialized memory access.
Roman Arutyunyan <arut@nginx.com>
parents:
6593
diff
changeset
|
284 ngx_http_set_ctx(r, ctx, ngx_http_realip_module); |
2176
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285 |
3274 | 286 ctx->connection = c; |
287 ctx->sockaddr = c->sockaddr; | |
288 ctx->socklen = c->socklen; | |
289 ctx->addr_text = c->addr_text; | |
573 | 290 |
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291 c->sockaddr = addr->sockaddr; |
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|
292 c->socklen = addr->socklen; |
3274 | 293 c->addr_text.len = len; |
294 c->addr_text.data = p; | |
573 | 295 |
986
68c85f283043
ngx_http_realip_module must return NGX_DECLINED
Igor Sysoev <igor@sysoev.ru>
parents:
681
diff
changeset
|
296 return NGX_DECLINED; |
573 | 297 } |
298 | |
299 | |
2176
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|
300 static void |
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|
301 ngx_http_realip_cleanup(void *data) |
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302 { |
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|
303 ngx_http_realip_ctx_t *ctx = data; |
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|
304 |
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|
305 ngx_connection_t *c; |
2176
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306 |
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|
307 c = ctx->connection; |
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|
308 |
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|
309 c->sockaddr = ctx->sockaddr; |
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310 c->socklen = ctx->socklen; |
2176
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311 c->addr_text = ctx->addr_text; |
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312 } |
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313 |
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314 |
573 | 315 static char * |
316 ngx_http_realip_from(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
317 { | |
318 ngx_http_realip_loc_conf_t *rlcf = conf; | |
319 | |
2257
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|
320 ngx_int_t rc; |
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|
321 ngx_str_t *value; |
4624
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|
322 ngx_cidr_t *cidr; |
573 | 323 |
3274 | 324 value = cf->args->elts; |
325 | |
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|
326 if (rlcf->from == NULL) { |
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|
327 rlcf->from = ngx_array_create(cf->pool, 2, |
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|
328 sizeof(ngx_cidr_t)); |
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|
329 if (rlcf->from == NULL) { |
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|
330 return NGX_CONF_ERROR; |
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331 } |
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|
332 } |
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333 |
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|
334 cidr = ngx_array_push(rlcf->from); |
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|
335 if (cidr == NULL) { |
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336 return NGX_CONF_ERROR; |
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|
337 } |
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|
338 |
3274 | 339 #if (NGX_HAVE_UNIX_DOMAIN) |
340 | |
341 if (ngx_strcmp(value[1].data, "unix:") == 0) { | |
6474 | 342 cidr->family = AF_UNIX; |
343 return NGX_CONF_OK; | |
3274 | 344 } |
345 | |
346 #endif | |
347 | |
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|
348 rc = ngx_ptocidr(&value[1], cidr); |
1380
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|
349 |
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|
350 if (rc == NGX_ERROR) { |
573 | 351 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", |
352 &value[1]); | |
353 return NGX_CONF_ERROR; | |
354 } | |
355 | |
1380
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|
356 if (rc == NGX_DONE) { |
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357 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
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358 "low address bits of %V are meaningless", &value[1]); |
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359 } |
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360 |
573 | 361 return NGX_CONF_OK; |
362 } | |
363 | |
364 | |
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365 static char * |
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366 ngx_http_realip(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
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367 { |
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368 ngx_http_realip_loc_conf_t *rlcf = conf; |
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369 |
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370 ngx_str_t *value; |
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371 |
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372 if (rlcf->type != NGX_CONF_UNSET_UINT) { |
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373 return "is duplicate"; |
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374 } |
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375 |
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376 value = cf->args->elts; |
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377 |
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378 if (ngx_strcmp(value[1].data, "X-Real-IP") == 0) { |
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379 rlcf->type = NGX_HTTP_REALIP_XREALIP; |
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380 return NGX_CONF_OK; |
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381 } |
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382 |
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383 if (ngx_strcmp(value[1].data, "X-Forwarded-For") == 0) { |
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384 rlcf->type = NGX_HTTP_REALIP_XFWD; |
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385 return NGX_CONF_OK; |
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386 } |
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387 |
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Added server-side support for PROXY protocol v1 (ticket #355).
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388 if (ngx_strcmp(value[1].data, "proxy_protocol") == 0) { |
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389 rlcf->type = NGX_HTTP_REALIP_PROXY; |
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390 return NGX_CONF_OK; |
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391 } |
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392 |
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393 rlcf->type = NGX_HTTP_REALIP_HEADER; |
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394 rlcf->hash = ngx_hash_strlow(value[1].data, value[1].data, value[1].len); |
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395 rlcf->header = value[1]; |
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396 |
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397 return NGX_CONF_OK; |
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398 } |
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399 |
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400 |
573 | 401 static void * |
402 ngx_http_realip_create_loc_conf(ngx_conf_t *cf) | |
403 { | |
404 ngx_http_realip_loc_conf_t *conf; | |
405 | |
406 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_realip_loc_conf_t)); | |
407 if (conf == NULL) { | |
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408 return NULL; |
573 | 409 } |
410 | |
411 /* | |
412 * set by ngx_pcalloc(): | |
413 * | |
414 * conf->from = NULL; | |
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415 * conf->hash = 0; |
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416 * conf->header = { 0, NULL }; |
573 | 417 */ |
418 | |
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419 conf->type = NGX_CONF_UNSET_UINT; |
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420 conf->recursive = NGX_CONF_UNSET; |
573 | 421 |
422 return conf; | |
423 } | |
424 | |
425 | |
426 static char * | |
427 ngx_http_realip_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
428 { | |
429 ngx_http_realip_loc_conf_t *prev = parent; | |
430 ngx_http_realip_loc_conf_t *conf = child; | |
431 | |
432 if (conf->from == NULL) { | |
433 conf->from = prev->from; | |
3305
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434 } |
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435 |
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436 ngx_conf_merge_uint_value(conf->type, prev->type, NGX_HTTP_REALIP_XREALIP); |
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437 ngx_conf_merge_value(conf->recursive, prev->recursive, 0); |
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438 |
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439 if (conf->header.len == 0) { |
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440 conf->hash = prev->hash; |
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441 conf->header = prev->header; |
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442 } |
573 | 443 |
444 return NGX_CONF_OK; | |
445 } | |
446 | |
447 | |
448 static ngx_int_t | |
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449 ngx_http_realip_add_variables(ngx_conf_t *cf) |
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450 { |
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451 ngx_http_variable_t *var, *v; |
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452 |
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453 for (v = ngx_http_realip_vars; v->name.len; v++) { |
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454 var = ngx_http_add_variable(cf, &v->name, v->flags); |
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455 if (var == NULL) { |
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456 return NGX_ERROR; |
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|
457 } |
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|
458 |
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|
459 var->get_handler = v->get_handler; |
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|
460 var->data = v->data; |
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|
461 } |
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|
462 |
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|
463 return NGX_OK; |
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|
464 } |
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|
465 |
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|
466 |
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|
467 static ngx_int_t |
681 | 468 ngx_http_realip_init(ngx_conf_t *cf) |
573 | 469 { |
470 ngx_http_handler_pt *h; | |
471 ngx_http_core_main_conf_t *cmcf; | |
472 | |
681 | 473 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
573 | 474 |
475 h = ngx_array_push(&cmcf->phases[NGX_HTTP_POST_READ_PHASE].handlers); | |
476 if (h == NULL) { | |
477 return NGX_ERROR; | |
478 } | |
479 | |
480 *h = ngx_http_realip_handler; | |
481 | |
581 | 482 h = ngx_array_push(&cmcf->phases[NGX_HTTP_PREACCESS_PHASE].handlers); |
573 | 483 if (h == NULL) { |
484 return NGX_ERROR; | |
485 } | |
486 | |
487 *h = ngx_http_realip_handler; | |
488 | |
489 return NGX_OK; | |
490 } | |
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changeset
|
491 |
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changeset
|
492 |
6562
b13d3a6f0512
Added the $realip_remote_port variable.
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diff
changeset
|
493 static ngx_http_realip_ctx_t * |
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diff
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|
494 ngx_http_realip_get_module_ctx(ngx_http_request_t *r) |
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|
495 { |
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|
496 ngx_pool_cleanup_t *cln; |
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|
497 ngx_http_realip_ctx_t *ctx; |
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|
498 |
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diff
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|
499 ctx = ngx_http_get_module_ctx(r, ngx_http_realip_module); |
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|
500 |
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|
501 if (ctx == NULL && (r->internal || r->filter_finalize)) { |
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|
502 |
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|
503 /* |
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|
504 * if module context was reset, the original address |
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diff
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|
505 * can still be found in the cleanup handler |
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|
506 */ |
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diff
changeset
|
507 |
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diff
changeset
|
508 for (cln = r->pool->cleanup; cln; cln = cln->next) { |
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diff
changeset
|
509 if (cln->handler == ngx_http_realip_cleanup) { |
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diff
changeset
|
510 ctx = cln->data; |
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diff
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|
511 break; |
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|
512 } |
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|
513 } |
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diff
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|
514 } |
cebe43bace93
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diff
changeset
|
515 |
6562
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Added the $realip_remote_port variable.
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diff
changeset
|
516 return ctx; |
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Added the $realip_remote_port variable.
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diff
changeset
|
517 } |
b13d3a6f0512
Added the $realip_remote_port variable.
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diff
changeset
|
518 |
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Added the $realip_remote_port variable.
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diff
changeset
|
519 |
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Added the $realip_remote_port variable.
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6474
diff
changeset
|
520 static ngx_int_t |
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6474
diff
changeset
|
521 ngx_http_realip_remote_addr_variable(ngx_http_request_t *r, |
b13d3a6f0512
Added the $realip_remote_port variable.
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diff
changeset
|
522 ngx_http_variable_value_t *v, uintptr_t data) |
b13d3a6f0512
Added the $realip_remote_port variable.
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6474
diff
changeset
|
523 { |
b13d3a6f0512
Added the $realip_remote_port variable.
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524 ngx_str_t *addr_text; |
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525 ngx_http_realip_ctx_t *ctx; |
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526 |
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527 ctx = ngx_http_realip_get_module_ctx(r); |
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528 |
6294
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Realip: the $realip_remote_addr variable.
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529 addr_text = ctx ? &ctx->addr_text : &r->connection->addr_text; |
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530 |
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531 v->len = addr_text->len; |
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532 v->valid = 1; |
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533 v->no_cacheable = 0; |
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534 v->not_found = 0; |
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535 v->data = addr_text->data; |
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536 |
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537 return NGX_OK; |
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538 } |
6562
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539 |
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540 |
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541 static ngx_int_t |
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542 ngx_http_realip_remote_port_variable(ngx_http_request_t *r, |
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543 ngx_http_variable_value_t *v, uintptr_t data) |
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544 { |
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545 ngx_uint_t port; |
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546 struct sockaddr *sa; |
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547 ngx_http_realip_ctx_t *ctx; |
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548 |
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549 ctx = ngx_http_realip_get_module_ctx(r); |
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550 |
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551 sa = ctx ? ctx->sockaddr : r->connection->sockaddr; |
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552 |
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553 v->len = 0; |
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554 v->valid = 1; |
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555 v->no_cacheable = 0; |
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Added the $realip_remote_port variable.
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556 v->not_found = 0; |
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557 |
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558 v->data = ngx_pnalloc(r->pool, sizeof("65535") - 1); |
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559 if (v->data == NULL) { |
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560 return NGX_ERROR; |
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561 } |
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562 |
6593
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Introduced ngx_inet_get_port() and ngx_inet_set_port() functions.
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563 port = ngx_inet_get_port(sa); |
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564 |
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565 if (port > 0 && port < 65536) { |
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566 v->len = ngx_sprintf(v->data, "%ui", port) - v->data; |
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567 } |
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568 |
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569 return NGX_OK; |
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570 } |