Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_headers_filter_module.c @ 7028:e6f399a176e7
Userid: ngx_http_get_indexed_variable() error handling.
When evaluating a mapped $reset_uid variable in the userid filter,
if get_handler set to ngx_http_map_variable() returned an error,
this previously resulted in a NULL pointer dereference.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Wed, 07 Jun 2017 18:46:36 +0300 |
parents | 057ec63be834 |
children | 8666da1ecf33 |
rev | line source |
---|---|
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 ngx_http_header_val_s ngx_http_header_val_t; |
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14 |
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15 typedef ngx_int_t (*ngx_http_set_header_pt)(ngx_http_request_t *r, |
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16 ngx_http_header_val_t *hv, ngx_str_t *value); |
625 | 17 |
18 | |
19 typedef struct { | |
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20 ngx_str_t name; |
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21 ngx_uint_t offset; |
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22 ngx_http_set_header_pt handler; |
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23 } ngx_http_set_header_t; |
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24 |
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25 |
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26 struct ngx_http_header_val_s { |
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27 ngx_http_complex_value_t value; |
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28 ngx_str_t key; |
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29 ngx_http_set_header_pt handler; |
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30 ngx_uint_t offset; |
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31 ngx_uint_t always; /* unsigned always:1 */ |
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32 }; |
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33 |
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34 |
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35 typedef enum { |
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36 NGX_HTTP_EXPIRES_OFF, |
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37 NGX_HTTP_EXPIRES_EPOCH, |
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38 NGX_HTTP_EXPIRES_MAX, |
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39 NGX_HTTP_EXPIRES_ACCESS, |
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40 NGX_HTTP_EXPIRES_MODIFIED, |
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41 NGX_HTTP_EXPIRES_DAILY, |
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42 NGX_HTTP_EXPIRES_UNSET |
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43 } ngx_http_expires_t; |
2013 | 44 |
45 | |
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46 typedef struct { |
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47 ngx_http_expires_t expires; |
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48 time_t expires_time; |
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49 ngx_http_complex_value_t *expires_value; |
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50 ngx_array_t *headers; |
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51 } ngx_http_headers_conf_t; |
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52 |
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53 |
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54 static ngx_int_t ngx_http_set_expires(ngx_http_request_t *r, |
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55 ngx_http_headers_conf_t *conf); |
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56 static ngx_int_t ngx_http_parse_expires(ngx_str_t *value, |
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57 ngx_http_expires_t *expires, time_t *expires_time, char **err); |
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58 static ngx_int_t ngx_http_add_cache_control(ngx_http_request_t *r, |
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59 ngx_http_header_val_t *hv, ngx_str_t *value); |
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60 static ngx_int_t ngx_http_add_header(ngx_http_request_t *r, |
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61 ngx_http_header_val_t *hv, ngx_str_t *value); |
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62 static ngx_int_t ngx_http_set_last_modified(ngx_http_request_t *r, |
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63 ngx_http_header_val_t *hv, ngx_str_t *value); |
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64 static ngx_int_t ngx_http_set_response_header(ngx_http_request_t *r, |
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65 ngx_http_header_val_t *hv, ngx_str_t *value); |
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66 |
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67 static void *ngx_http_headers_create_conf(ngx_conf_t *cf); |
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68 static char *ngx_http_headers_merge_conf(ngx_conf_t *cf, |
573 | 69 void *parent, void *child); |
681 | 70 static ngx_int_t ngx_http_headers_filter_init(ngx_conf_t *cf); |
501 | 71 static char *ngx_http_headers_expires(ngx_conf_t *cf, ngx_command_t *cmd, |
72 void *conf); | |
573 | 73 static char *ngx_http_headers_add(ngx_conf_t *cf, ngx_command_t *cmd, |
74 void *conf); | |
326
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75 |
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76 |
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77 static ngx_http_set_header_t ngx_http_set_headers[] = { |
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78 |
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79 { ngx_string("Cache-Control"), 0, ngx_http_add_cache_control }, |
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80 |
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81 { ngx_string("Last-Modified"), |
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82 offsetof(ngx_http_headers_out_t, last_modified), |
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83 ngx_http_set_last_modified }, |
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84 |
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85 { ngx_string("ETag"), |
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86 offsetof(ngx_http_headers_out_t, etag), |
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87 ngx_http_set_response_header }, |
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88 |
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89 { ngx_null_string, 0, NULL } |
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90 }; |
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91 |
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92 |
326
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93 static ngx_command_t ngx_http_headers_filter_commands[] = { |
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94 |
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95 { ngx_string("expires"), |
573 | 96 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF |
2013 | 97 |NGX_CONF_TAKE12, |
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98 ngx_http_headers_expires, |
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99 NGX_HTTP_LOC_CONF_OFFSET, |
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100 0, |
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101 NULL }, |
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102 |
573 | 103 { ngx_string("add_header"), |
104 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF | |
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105 |NGX_CONF_TAKE23, |
573 | 106 ngx_http_headers_add, |
107 NGX_HTTP_LOC_CONF_OFFSET, | |
108 0, | |
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109 NULL }, |
573 | 110 |
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111 ngx_null_command |
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112 }; |
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113 |
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114 |
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115 static ngx_http_module_t ngx_http_headers_filter_module_ctx = { |
509 | 116 NULL, /* preconfiguration */ |
681 | 117 ngx_http_headers_filter_init, /* postconfiguration */ |
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118 |
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119 NULL, /* create main configuration */ |
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120 NULL, /* init main configuration */ |
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121 |
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122 NULL, /* create server configuration */ |
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123 NULL, /* merge server configuration */ |
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124 |
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125 ngx_http_headers_create_conf, /* create location configuration */ |
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126 ngx_http_headers_merge_conf /* merge location configuration */ |
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127 }; |
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128 |
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129 |
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130 ngx_module_t ngx_http_headers_filter_module = { |
509 | 131 NGX_MODULE_V1, |
326
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132 &ngx_http_headers_filter_module_ctx, /* module context */ |
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133 ngx_http_headers_filter_commands, /* module directives */ |
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134 NGX_HTTP_MODULE, /* module type */ |
541 | 135 NULL, /* init master */ |
681 | 136 NULL, /* init module */ |
541 | 137 NULL, /* init process */ |
138 NULL, /* init thread */ | |
139 NULL, /* exit thread */ | |
140 NULL, /* exit process */ | |
141 NULL, /* exit master */ | |
142 NGX_MODULE_V1_PADDING | |
326
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143 }; |
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144 |
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145 |
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146 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
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147 |
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148 |
501 | 149 static ngx_int_t |
150 ngx_http_headers_filter(ngx_http_request_t *r) | |
326
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151 { |
1364 | 152 ngx_str_t value; |
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153 ngx_uint_t i, safe_status; |
625 | 154 ngx_http_header_val_t *h; |
326
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155 ngx_http_headers_conf_t *conf; |
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156 |
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157 conf = ngx_http_get_module_loc_conf(r, ngx_http_headers_filter_module); |
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158 |
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159 if ((conf->expires == NGX_HTTP_EXPIRES_OFF && conf->headers == NULL) |
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160 || r != r->main) |
543 | 161 { |
326
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162 return ngx_http_next_header_filter(r); |
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163 } |
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164 |
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165 switch (r->headers_out.status) { |
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166 |
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167 case NGX_HTTP_OK: |
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168 case NGX_HTTP_CREATED: |
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169 case NGX_HTTP_NO_CONTENT: |
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170 case NGX_HTTP_PARTIAL_CONTENT: |
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171 case NGX_HTTP_MOVED_PERMANENTLY: |
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172 case NGX_HTTP_MOVED_TEMPORARILY: |
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173 case NGX_HTTP_SEE_OTHER: |
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174 case NGX_HTTP_NOT_MODIFIED: |
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175 case NGX_HTTP_TEMPORARY_REDIRECT: |
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176 case NGX_HTTP_PERMANENT_REDIRECT: |
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177 safe_status = 1; |
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178 break; |
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179 |
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180 default: |
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181 safe_status = 0; |
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182 break; |
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183 } |
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184 |
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185 if (conf->expires != NGX_HTTP_EXPIRES_OFF && safe_status) { |
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186 if (ngx_http_set_expires(r, conf) != NGX_OK) { |
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187 return NGX_ERROR; |
326
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188 } |
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189 } |
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190 |
573 | 191 if (conf->headers) { |
192 h = conf->headers->elts; | |
193 for (i = 0; i < conf->headers->nelts; i++) { | |
625 | 194 |
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195 if (!safe_status && !h[i].always) { |
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196 continue; |
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197 } |
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198 |
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199 if (ngx_http_complex_value(r, &h[i].value, &value) != NGX_OK) { |
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200 return NGX_ERROR; |
625 | 201 } |
202 | |
1363
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203 if (h[i].handler(r, &h[i], &value) != NGX_OK) { |
625 | 204 return NGX_ERROR; |
205 } | |
573 | 206 } |
207 } | |
208 | |
326
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209 return ngx_http_next_header_filter(r); |
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210 } |
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211 |
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212 |
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213 static ngx_int_t |
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214 ngx_http_set_expires(ngx_http_request_t *r, ngx_http_headers_conf_t *conf) |
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215 { |
5942
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216 char *err; |
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217 size_t len; |
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218 time_t now, expires_time, max_age; |
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219 ngx_str_t value; |
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220 ngx_int_t rc; |
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221 ngx_uint_t i; |
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222 ngx_table_elt_t *e, *cc, **ccp; |
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223 ngx_http_expires_t expires; |
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224 |
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225 expires = conf->expires; |
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226 expires_time = conf->expires_time; |
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227 |
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228 if (conf->expires_value != NULL) { |
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229 |
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230 if (ngx_http_complex_value(r, conf->expires_value, &value) != NGX_OK) { |
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231 return NGX_ERROR; |
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232 } |
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233 |
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234 rc = ngx_http_parse_expires(&value, &expires, &expires_time, &err); |
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235 |
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236 if (rc != NGX_OK) { |
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237 return NGX_OK; |
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238 } |
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239 |
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240 if (expires == NGX_HTTP_EXPIRES_OFF) { |
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241 return NGX_OK; |
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242 } |
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243 } |
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244 |
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245 e = r->headers_out.expires; |
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246 |
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247 if (e == NULL) { |
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248 |
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249 e = ngx_list_push(&r->headers_out.headers); |
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250 if (e == NULL) { |
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251 return NGX_ERROR; |
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252 } |
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253 |
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254 r->headers_out.expires = e; |
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255 |
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256 e->hash = 1; |
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257 ngx_str_set(&e->key, "Expires"); |
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258 } |
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259 |
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260 len = sizeof("Mon, 28 Sep 1970 06:00:00 GMT"); |
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261 e->value.len = len - 1; |
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262 |
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263 ccp = r->headers_out.cache_control.elts; |
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264 |
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265 if (ccp == NULL) { |
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266 |
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267 if (ngx_array_init(&r->headers_out.cache_control, r->pool, |
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268 1, sizeof(ngx_table_elt_t *)) |
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269 != NGX_OK) |
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270 { |
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271 return NGX_ERROR; |
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272 } |
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273 |
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274 cc = ngx_list_push(&r->headers_out.headers); |
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275 if (cc == NULL) { |
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276 return NGX_ERROR; |
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277 } |
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278 |
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279 cc->hash = 1; |
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280 ngx_str_set(&cc->key, "Cache-Control"); |
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281 |
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282 ccp = ngx_array_push(&r->headers_out.cache_control); |
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283 if (ccp == NULL) { |
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284 return NGX_ERROR; |
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285 } |
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286 |
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287 *ccp = cc; |
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288 |
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289 } else { |
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290 for (i = 1; i < r->headers_out.cache_control.nelts; i++) { |
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291 ccp[i]->hash = 0; |
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292 } |
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293 |
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294 cc = ccp[0]; |
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295 } |
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296 |
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297 if (expires == NGX_HTTP_EXPIRES_EPOCH) { |
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298 e->value.data = (u_char *) "Thu, 01 Jan 1970 00:00:01 GMT"; |
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299 ngx_str_set(&cc->value, "no-cache"); |
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300 return NGX_OK; |
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301 } |
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302 |
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303 if (expires == NGX_HTTP_EXPIRES_MAX) { |
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304 e->value.data = (u_char *) "Thu, 31 Dec 2037 23:55:55 GMT"; |
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305 /* 10 years */ |
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306 ngx_str_set(&cc->value, "max-age=315360000"); |
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307 return NGX_OK; |
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308 } |
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309 |
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310 e->value.data = ngx_pnalloc(r->pool, len); |
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311 if (e->value.data == NULL) { |
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312 return NGX_ERROR; |
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313 } |
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314 |
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315 if (expires_time == 0 && expires != NGX_HTTP_EXPIRES_DAILY) { |
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316 ngx_memcpy(e->value.data, ngx_cached_http_time.data, |
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317 ngx_cached_http_time.len + 1); |
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318 ngx_str_set(&cc->value, "max-age=0"); |
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319 return NGX_OK; |
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320 } |
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321 |
2163 | 322 now = ngx_time(); |
323 | |
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324 if (expires == NGX_HTTP_EXPIRES_DAILY) { |
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325 expires_time = ngx_next_time(expires_time); |
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326 max_age = expires_time - now; |
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327 |
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328 } else if (expires == NGX_HTTP_EXPIRES_ACCESS |
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329 || r->headers_out.last_modified_time == -1) |
2013 | 330 { |
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331 max_age = expires_time; |
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332 expires_time += now; |
2163 | 333 |
2013 | 334 } else { |
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335 expires_time += r->headers_out.last_modified_time; |
2163 | 336 max_age = expires_time - now; |
2013 | 337 } |
338 | |
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339 ngx_http_time(e->value.data, expires_time); |
2013 | 340 |
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341 if (conf->expires_time < 0 || max_age < 0) { |
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342 ngx_str_set(&cc->value, "no-cache"); |
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343 return NGX_OK; |
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344 } |
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345 |
2049 | 346 cc->value.data = ngx_pnalloc(r->pool, |
347 sizeof("max-age=") + NGX_TIME_T_LEN + 1); | |
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348 if (cc->value.data == NULL) { |
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349 return NGX_ERROR; |
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350 } |
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351 |
2163 | 352 cc->value.len = ngx_sprintf(cc->value.data, "max-age=%T", max_age) |
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353 - cc->value.data; |
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354 |
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355 return NGX_OK; |
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356 } |
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357 |
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358 |
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359 static ngx_int_t |
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360 ngx_http_parse_expires(ngx_str_t *value, ngx_http_expires_t *expires, |
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361 time_t *expires_time, char **err) |
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362 { |
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363 ngx_uint_t minus; |
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364 |
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365 if (*expires != NGX_HTTP_EXPIRES_MODIFIED) { |
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366 |
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367 if (value->len == 5 && ngx_strncmp(value->data, "epoch", 5) == 0) { |
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368 *expires = NGX_HTTP_EXPIRES_EPOCH; |
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369 return NGX_OK; |
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370 } |
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371 |
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372 if (value->len == 3 && ngx_strncmp(value->data, "max", 3) == 0) { |
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373 *expires = NGX_HTTP_EXPIRES_MAX; |
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374 return NGX_OK; |
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375 } |
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376 |
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changeset
|
377 if (value->len == 3 && ngx_strncmp(value->data, "off", 3) == 0) { |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
378 *expires = NGX_HTTP_EXPIRES_OFF; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
379 return NGX_OK; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
380 } |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
381 } |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
382 |
6062
173561dfd567
Fixed invalid access to complex value defined as an empty string.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5942
diff
changeset
|
383 if (value->len && value->data[0] == '@') { |
5942
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
384 value->data++; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
385 value->len--; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
386 minus = 0; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
387 |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
388 if (*expires == NGX_HTTP_EXPIRES_MODIFIED) { |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
389 *err = "daily time cannot be used with \"modified\" parameter"; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
390 return NGX_ERROR; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
391 } |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
392 |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
393 *expires = NGX_HTTP_EXPIRES_DAILY; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
394 |
6062
173561dfd567
Fixed invalid access to complex value defined as an empty string.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5942
diff
changeset
|
395 } else if (value->len && value->data[0] == '+') { |
5942
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
396 value->data++; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
397 value->len--; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
398 minus = 0; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
399 |
6062
173561dfd567
Fixed invalid access to complex value defined as an empty string.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5942
diff
changeset
|
400 } else if (value->len && value->data[0] == '-') { |
5942
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
401 value->data++; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
402 value->len--; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
403 minus = 1; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
404 |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
405 } else { |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
406 minus = 0; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
407 } |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
408 |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
409 *expires_time = ngx_parse_time(value, 1); |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
410 |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
411 if (*expires_time == (time_t) NGX_ERROR) { |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
412 *err = "invalid value"; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
413 return NGX_ERROR; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
414 } |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
415 |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
416 if (*expires == NGX_HTTP_EXPIRES_DAILY |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
417 && *expires_time > 24 * 60 * 60) |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
418 { |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
419 *err = "daily time value must be less than 24 hours"; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
420 return NGX_ERROR; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
421 } |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
422 |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
423 if (minus) { |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
424 *expires_time = - *expires_time; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
425 } |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
426 |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
427 return NGX_OK; |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
428 } |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
429 |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
430 |
4983f7d18fe3
Headers filter: variables support in expires (ticket #113).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5941
diff
changeset
|
431 static ngx_int_t |
1363
b0e114fb3bdc
use header specific handler in add_handler,
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
432 ngx_http_add_header(ngx_http_request_t *r, ngx_http_header_val_t *hv, |
b0e114fb3bdc
use header specific handler in add_handler,
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
433 ngx_str_t *value) |
b0e114fb3bdc
use header specific handler in add_handler,
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
434 { |
b0e114fb3bdc
use header specific handler in add_handler,
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
435 ngx_table_elt_t *h; |
b0e114fb3bdc
use header specific handler in add_handler,
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
436 |
2406
008777fa59e0
do not add header if add_header ""
Igor Sysoev <igor@sysoev.ru>
parents:
2164
diff
changeset
|
437 if (value->len) { |
008777fa59e0
do not add header if add_header ""
Igor Sysoev <igor@sysoev.ru>
parents:
2164
diff
changeset
|
438 h = ngx_list_push(&r->headers_out.headers); |
008777fa59e0
do not add header if add_header ""
Igor Sysoev <igor@sysoev.ru>
parents:
2164
diff
changeset
|
439 if (h == NULL) { |
008777fa59e0
do not add header if add_header ""
Igor Sysoev <igor@sysoev.ru>
parents:
2164
diff
changeset
|
440 return NGX_ERROR; |
008777fa59e0
do not add header if add_header ""
Igor Sysoev <igor@sysoev.ru>
parents:
2164
diff
changeset
|
441 } |
008777fa59e0
do not add header if add_header ""
Igor Sysoev <igor@sysoev.ru>
parents:
2164
diff
changeset
|
442 |
4547
2577c27cbffd
Minor ngx_http_headers_filter_module.c code cleanup.
Ruslan Ermilov <ru@nginx.com>
parents:
4491
diff
changeset
|
443 h->hash = 1; |
2588
a6954ce88b80
use complex values in add_header, auth_basic_user_file,
Igor Sysoev <igor@sysoev.ru>
parents:
2406
diff
changeset
|
444 h->key = hv->key; |
2406
008777fa59e0
do not add header if add_header ""
Igor Sysoev <igor@sysoev.ru>
parents:
2164
diff
changeset
|
445 h->value = *value; |
1363
b0e114fb3bdc
use header specific handler in add_handler,
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
446 } |
b0e114fb3bdc
use header specific handler in add_handler,
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
447 |
b0e114fb3bdc
use header specific handler in add_handler,
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
448 return NGX_OK; |
b0e114fb3bdc
use header specific handler in add_handler,
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
449 } |
b0e114fb3bdc
use header specific handler in add_handler,
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
450 |
b0e114fb3bdc
use header specific handler in add_handler,
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
451 |
b0e114fb3bdc
use header specific handler in add_handler,
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
452 static ngx_int_t |
1365
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
453 ngx_http_add_cache_control(ngx_http_request_t *r, ngx_http_header_val_t *hv, |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
454 ngx_str_t *value) |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
455 { |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
456 ngx_table_elt_t *cc, **ccp; |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
457 |
5427
7ed23dcfea3d
Headers filter: empty Cache-Control is no longer added.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4975
diff
changeset
|
458 if (value->len == 0) { |
7ed23dcfea3d
Headers filter: empty Cache-Control is no longer added.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4975
diff
changeset
|
459 return NGX_OK; |
7ed23dcfea3d
Headers filter: empty Cache-Control is no longer added.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4975
diff
changeset
|
460 } |
7ed23dcfea3d
Headers filter: empty Cache-Control is no longer added.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4975
diff
changeset
|
461 |
1365
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
462 ccp = r->headers_out.cache_control.elts; |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
463 |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
464 if (ccp == NULL) { |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
465 |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
466 if (ngx_array_init(&r->headers_out.cache_control, r->pool, |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
467 1, sizeof(ngx_table_elt_t *)) |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
468 != NGX_OK) |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
469 { |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
470 return NGX_ERROR; |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
471 } |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
472 } |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
473 |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
474 cc = ngx_list_push(&r->headers_out.headers); |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
475 if (cc == NULL) { |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
476 return NGX_ERROR; |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
477 } |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
478 |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
479 cc->hash = 1; |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
Igor Sysoev <igor@sysoev.ru>
parents:
3405
diff
changeset
|
480 ngx_str_set(&cc->key, "Cache-Control"); |
1365
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
481 cc->value = *value; |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
482 |
6986
0cdee26605f3
Cleaned up r->headers_out.headers allocation error handling.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6977
diff
changeset
|
483 ccp = ngx_array_push(&r->headers_out.cache_control); |
0cdee26605f3
Cleaned up r->headers_out.headers allocation error handling.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6977
diff
changeset
|
484 if (ccp == NULL) { |
0cdee26605f3
Cleaned up r->headers_out.headers allocation error handling.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6977
diff
changeset
|
485 return NGX_ERROR; |
0cdee26605f3
Cleaned up r->headers_out.headers allocation error handling.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6977
diff
changeset
|
486 } |
0cdee26605f3
Cleaned up r->headers_out.headers allocation error handling.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6977
diff
changeset
|
487 |
1365
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
488 *ccp = cc; |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
489 |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
490 return NGX_OK; |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
491 } |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
492 |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
changeset
|
493 |
d1dc7ef7c3ce
move "Cache-Control" header code to specific handler
Igor Sysoev <igor@sysoev.ru>
parents:
1364
diff
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494 static ngx_int_t |
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495 ngx_http_set_last_modified(ngx_http_request_t *r, ngx_http_header_val_t *hv, |
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496 ngx_str_t *value) |
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497 { |
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498 if (ngx_http_set_response_header(r, hv, value) != NGX_OK) { |
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499 return NGX_ERROR; |
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500 } |
1655 | 501 |
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502 r->headers_out.last_modified_time = |
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503 (value->len) ? ngx_parse_http_time(value->data, value->len) : -1; |
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504 |
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505 return NGX_OK; |
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506 } |
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507 |
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508 |
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509 static ngx_int_t |
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510 ngx_http_set_response_header(ngx_http_request_t *r, ngx_http_header_val_t *hv, |
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511 ngx_str_t *value) |
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512 { |
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513 ngx_table_elt_t *h, **old; |
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514 |
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515 old = (ngx_table_elt_t **) ((char *) &r->headers_out + hv->offset); |
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516 |
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517 if (value->len == 0) { |
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518 if (*old) { |
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519 (*old)->hash = 0; |
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520 *old = NULL; |
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521 } |
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522 |
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523 return NGX_OK; |
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524 } |
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525 |
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526 if (*old) { |
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527 h = *old; |
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528 |
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529 } else { |
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530 h = ngx_list_push(&r->headers_out.headers); |
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531 if (h == NULL) { |
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532 return NGX_ERROR; |
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533 } |
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534 |
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535 *old = h; |
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536 } |
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537 |
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538 h->hash = 1; |
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539 h->key = hv->key; |
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540 h->value = *value; |
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541 |
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542 return NGX_OK; |
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543 } |
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544 |
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545 |
501 | 546 static void * |
547 ngx_http_headers_create_conf(ngx_conf_t *cf) | |
577 | 548 { |
326
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549 ngx_http_headers_conf_t *conf; |
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550 |
573 | 551 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_headers_conf_t)); |
501 | 552 if (conf == NULL) { |
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553 return NULL; |
326
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554 } |
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555 |
573 | 556 /* |
557 * set by ngx_pcalloc(): | |
558 * | |
559 * conf->headers = NULL; | |
2013 | 560 * conf->expires_time = 0; |
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561 * conf->expires_value = NULL; |
573 | 562 */ |
563 | |
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564 conf->expires = NGX_HTTP_EXPIRES_UNSET; |
326
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565 |
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566 return conf; |
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567 } |
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568 |
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569 |
501 | 570 static char * |
571 ngx_http_headers_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
326
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572 { |
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573 ngx_http_headers_conf_t *prev = parent; |
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574 ngx_http_headers_conf_t *conf = child; |
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575 |
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576 if (conf->expires == NGX_HTTP_EXPIRES_UNSET) { |
2013 | 577 conf->expires = prev->expires; |
578 conf->expires_time = prev->expires_time; | |
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579 conf->expires_value = prev->expires_value; |
2013 | 580 |
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581 if (conf->expires == NGX_HTTP_EXPIRES_UNSET) { |
2013 | 582 conf->expires = NGX_HTTP_EXPIRES_OFF; |
583 } | |
326
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584 } |
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585 |
573 | 586 if (conf->headers == NULL) { |
587 conf->headers = prev->headers; | |
588 } | |
589 | |
326
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590 return NGX_CONF_OK; |
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|
591 } |
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|
592 |
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|
593 |
681 | 594 static ngx_int_t |
595 ngx_http_headers_filter_init(ngx_conf_t *cf) | |
596 { | |
597 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
598 ngx_http_top_header_filter = ngx_http_headers_filter; | |
599 | |
600 return NGX_OK; | |
601 } | |
602 | |
603 | |
501 | 604 static char * |
605 ngx_http_headers_expires(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
326
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606 { |
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607 ngx_http_headers_conf_t *hcf = conf; |
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608 |
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609 char *err; |
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610 ngx_str_t *value; |
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611 ngx_int_t rc; |
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612 ngx_uint_t n; |
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613 ngx_http_complex_value_t cv; |
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614 ngx_http_compile_complex_value_t ccv; |
326
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|
615 |
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616 if (hcf->expires != NGX_HTTP_EXPIRES_UNSET) { |
326
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|
617 return "is duplicate"; |
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|
618 } |
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|
619 |
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|
620 value = cf->args->elts; |
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|
621 |
2013 | 622 if (cf->args->nelts == 2) { |
623 | |
624 hcf->expires = NGX_HTTP_EXPIRES_ACCESS; | |
625 | |
626 n = 1; | |
627 | |
628 } else { /* cf->args->nelts == 3 */ | |
629 | |
630 if (ngx_strcmp(value[1].data, "modified") != 0) { | |
631 return "invalid value"; | |
632 } | |
633 | |
634 hcf->expires = NGX_HTTP_EXPIRES_MODIFIED; | |
635 | |
636 n = 2; | |
729 | 637 } |
638 | |
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639 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
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640 |
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641 ccv.cf = cf; |
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642 ccv.value = &value[n]; |
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643 ccv.complex_value = &cv; |
2163 | 644 |
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645 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
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646 return NGX_CONF_ERROR; |
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647 } |
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|
648 |
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|
649 if (cv.lengths != NULL) { |
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650 |
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|
651 hcf->expires_value = ngx_palloc(cf->pool, |
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652 sizeof(ngx_http_complex_value_t)); |
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653 if (hcf->expires_value == NULL) { |
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654 return NGX_CONF_ERROR; |
2163 | 655 } |
656 | |
5942
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657 *hcf->expires_value = cv; |
326
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658 |
5942
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659 return NGX_CONF_OK; |
326
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660 } |
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661 |
5942
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662 rc = ngx_http_parse_expires(&value[n], &hcf->expires, &hcf->expires_time, |
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663 &err); |
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664 if (rc != NGX_OK) { |
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665 return err; |
326
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666 } |
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667 |
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668 return NGX_CONF_OK; |
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669 } |
573 | 670 |
671 | |
672 static char * | |
673 ngx_http_headers_add(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
674 { | |
675 ngx_http_headers_conf_t *hcf = conf; | |
676 | |
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677 ngx_str_t *value; |
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678 ngx_uint_t i; |
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679 ngx_http_header_val_t *hv; |
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680 ngx_http_set_header_t *set; |
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681 ngx_http_compile_complex_value_t ccv; |
573 | 682 |
683 value = cf->args->elts; | |
684 | |
685 if (hcf->headers == NULL) { | |
625 | 686 hcf->headers = ngx_array_create(cf->pool, 1, |
687 sizeof(ngx_http_header_val_t)); | |
573 | 688 if (hcf->headers == NULL) { |
689 return NGX_CONF_ERROR; | |
690 } | |
691 } | |
692 | |
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693 hv = ngx_array_push(hcf->headers); |
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694 if (hv == NULL) { |
573 | 695 return NGX_CONF_ERROR; |
696 } | |
697 | |
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698 hv->key = value[1]; |
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699 hv->handler = ngx_http_add_header; |
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700 hv->offset = 0; |
5817
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701 hv->always = 0; |
625 | 702 |
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703 set = ngx_http_set_headers; |
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704 for (i = 0; set[i].name.len; i++) { |
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705 if (ngx_strcasecmp(value[1].data, set[i].name.data) != 0) { |
1363
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706 continue; |
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707 } |
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708 |
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709 hv->offset = set[i].offset; |
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710 hv->handler = set[i].handler; |
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711 |
1363
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712 break; |
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713 } |
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714 |
2605
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715 if (value[2].len == 0) { |
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716 ngx_memzero(&hv->value, sizeof(ngx_http_complex_value_t)); |
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717 |
6405
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718 } else { |
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719 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
625 | 720 |
6405
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721 ccv.cf = cf; |
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722 ccv.value = &value[2]; |
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723 ccv.complex_value = &hv->value; |
625 | 724 |
6405
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725 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
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726 return NGX_CONF_ERROR; |
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727 } |
625 | 728 } |
573 | 729 |
5817
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730 if (cf->args->nelts == 3) { |
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731 return NGX_CONF_OK; |
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732 } |
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733 |
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734 if (ngx_strcmp(value[3].data, "always") != 0) { |
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735 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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|
736 "invalid parameter \"%V\"", &value[3]); |
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737 return NGX_CONF_ERROR; |
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738 } |
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|
739 |
74ffe03555d0
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|
740 hv->always = 1; |
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|
741 |
573 | 742 return NGX_CONF_OK; |
743 } |