Mercurial > hg > nginx
annotate src/http/modules/ngx_http_charset_filter_module.c @ 752:907361d07f25
ngx_http_charset_module supports the variables
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Mon, 09 Oct 2006 14:16:36 +0000 |
| parents | 7e24168b0853 |
| children | 36f7b549f481 |
| rev | line source |
|---|---|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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11 |
| 657 | 12 #define NGX_HTTP_NO_CHARSET -2 |
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13 #define NGX_HTTP_CHARSET_VAR 0x10000 |
| 657 | 14 |
| 15 /* 1 byte length and up to 3 bytes for the UTF-8 encoding of the UCS-2 */ | |
| 16 #define NGX_UTF_LEN 4 | |
| 17 | |
| 18 #define NGX_HTML_ENTITY_LEN (sizeof("") - 1) | |
| 529 | 19 |
| 20 | |
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21 typedef struct { |
| 657 | 22 u_char **tables; |
| 23 ngx_str_t name; | |
| 523 | 24 |
| 657 | 25 unsigned length:16; |
| 26 unsigned utf8:1; | |
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27 } ngx_http_charset_t; |
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30 typedef struct { |
| 657 | 31 ngx_int_t src; |
| 32 ngx_int_t dst; | |
| 529 | 33 } ngx_http_charset_recode_t; |
| 34 | |
| 35 | |
| 36 typedef struct { | |
| 657 | 37 ngx_int_t src; |
| 38 ngx_int_t dst; | |
| 39 u_char *src2dst; | |
| 40 u_char *dst2src; | |
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41 } ngx_http_charset_tables_t; |
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44 typedef struct { |
| 657 | 45 ngx_array_t charsets; /* ngx_http_charset_t */ |
| 46 ngx_array_t tables; /* ngx_http_charset_tables_t */ | |
| 47 ngx_array_t recodes; /* ngx_http_charset_recode_t */ | |
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48 } ngx_http_charset_main_conf_t; |
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51 typedef struct { |
| 657 | 52 ngx_int_t charset; |
| 53 ngx_int_t source_charset; | |
| 54 ngx_flag_t override_charset; | |
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55 } ngx_http_charset_loc_conf_t; |
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58 typedef struct { |
| 657 | 59 u_char *table; |
| 60 ngx_int_t charset; | |
| 61 | |
| 62 ngx_chain_t *busy; | |
| 63 ngx_chain_t *free_bufs; | |
| 64 ngx_chain_t *free_buffers; | |
| 65 | |
| 66 size_t saved_len; | |
| 67 u_char saved[NGX_UTF_LEN]; | |
| 68 | |
| 69 unsigned length:16; | |
| 70 unsigned from_utf8:1; | |
| 71 unsigned to_utf8:1; | |
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72 } ngx_http_charset_ctx_t; |
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74 |
| 657 | 75 typedef struct { |
| 76 ngx_http_charset_tables_t *table; | |
| 77 ngx_http_charset_t *charset; | |
| 78 ngx_uint_t characters; | |
| 79 } ngx_http_charset_conf_ctx_t; | |
| 80 | |
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81 |
| 657 | 82 static ngx_int_t ngx_http_charset_get_charset(ngx_http_charset_t *charsets, |
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83 ngx_uint_t n, ngx_str_t *charset); |
| 657 | 84 static ngx_int_t ngx_http_charset_set_charset(ngx_http_request_t *r, |
| 85 ngx_http_charset_t *charsets, ngx_int_t charset, ngx_int_t source_charset); | |
| 86 static ngx_uint_t ngx_http_charset_recode(ngx_buf_t *b, u_char *table); | |
| 87 static ngx_chain_t *ngx_http_charset_recode_from_utf8(ngx_pool_t *pool, | |
| 88 ngx_buf_t *buf, ngx_http_charset_ctx_t *ctx); | |
| 89 static ngx_chain_t *ngx_http_charset_recode_to_utf8(ngx_pool_t *pool, | |
| 90 ngx_buf_t *buf, ngx_http_charset_ctx_t *ctx); | |
| 91 | |
| 92 static ngx_chain_t *ngx_http_charset_get_buf(ngx_pool_t *pool, | |
| 93 ngx_http_charset_ctx_t *ctx); | |
| 94 static ngx_chain_t *ngx_http_charset_get_buffer(ngx_pool_t *pool, | |
| 95 ngx_http_charset_ctx_t *ctx, size_t size); | |
| 96 | |
| 97 static char *ngx_http_charset_map_block(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 501 | 98 void *conf); |
| 657 | 99 static char *ngx_http_charset_map(ngx_conf_t *cf, ngx_command_t *dummy, |
| 100 void *conf); | |
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102 static char *ngx_http_set_charset_slot(ngx_conf_t *cf, ngx_command_t *cmd, |
| 501 | 103 void *conf); |
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104 static ngx_int_t ngx_http_add_charset(ngx_array_t *charsets, ngx_str_t *name); |
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106 static void *ngx_http_charset_create_main_conf(ngx_conf_t *cf); |
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107 static void *ngx_http_charset_create_loc_conf(ngx_conf_t *cf); |
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108 static char *ngx_http_charset_merge_loc_conf(ngx_conf_t *cf, |
| 501 | 109 void *parent, void *child); |
| 529 | 110 static ngx_int_t ngx_http_charset_postconfiguration(ngx_conf_t *cf); |
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111 |
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112 |
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113 static ngx_command_t ngx_http_charset_filter_commands[] = { |
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114 |
| 529 | 115 { ngx_string("charset"), |
| 559 | 116 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF |
| 117 |NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1, | |
| 529 | 118 ngx_http_set_charset_slot, |
| 119 NGX_HTTP_LOC_CONF_OFFSET, | |
| 120 offsetof(ngx_http_charset_loc_conf_t, charset), | |
| 121 NULL }, | |
| 122 | |
| 123 { ngx_string("source_charset"), | |
| 559 | 124 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF |
| 125 |NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1, | |
| 529 | 126 ngx_http_set_charset_slot, |
| 127 NGX_HTTP_LOC_CONF_OFFSET, | |
| 128 offsetof(ngx_http_charset_loc_conf_t, source_charset), | |
| 129 NULL }, | |
| 130 | |
| 635 | 131 { ngx_string("override_charset"), |
| 132 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF | |
| 133 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG, | |
| 134 ngx_conf_set_flag_slot, | |
| 135 NGX_HTTP_LOC_CONF_OFFSET, | |
| 136 offsetof(ngx_http_charset_loc_conf_t, override_charset), | |
| 137 NULL }, | |
| 138 | |
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139 { ngx_string("charset_map"), |
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140 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE2, |
| 657 | 141 ngx_http_charset_map_block, |
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142 NGX_HTTP_MAIN_CONF_OFFSET, |
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143 0, |
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144 NULL }, |
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146 ngx_null_command |
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147 }; |
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148 |
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150 static ngx_http_module_t ngx_http_charset_filter_module_ctx = { |
| 509 | 151 NULL, /* preconfiguration */ |
| 529 | 152 ngx_http_charset_postconfiguration, /* postconfiguration */ |
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154 ngx_http_charset_create_main_conf, /* create main configuration */ |
| 529 | 155 NULL, /* init main configuration */ |
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156 |
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157 NULL, /* create server configuration */ |
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158 NULL, /* merge server configuration */ |
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159 |
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160 ngx_http_charset_create_loc_conf, /* create location configuration */ |
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161 ngx_http_charset_merge_loc_conf /* merge location configuration */ |
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162 }; |
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163 |
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164 |
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165 ngx_module_t ngx_http_charset_filter_module = { |
| 509 | 166 NGX_MODULE_V1, |
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167 &ngx_http_charset_filter_module_ctx, /* module context */ |
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168 ngx_http_charset_filter_commands, /* module directives */ |
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169 NGX_HTTP_MODULE, /* module type */ |
| 541 | 170 NULL, /* init master */ |
| 681 | 171 NULL, /* init module */ |
| 541 | 172 NULL, /* init process */ |
| 173 NULL, /* init thread */ | |
| 174 NULL, /* exit thread */ | |
| 175 NULL, /* exit process */ | |
| 176 NULL, /* exit master */ | |
| 177 NGX_MODULE_V1_PADDING | |
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178 }; |
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179 |
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180 |
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181 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
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182 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; |
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183 |
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184 |
| 501 | 185 static ngx_int_t |
| 186 ngx_http_charset_header_filter(ngx_http_request_t *r) | |
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187 { |
| 657 | 188 u_char *ct; |
| 635 | 189 ngx_int_t charset, source_charset; |
| 663 | 190 ngx_str_t *mc, *from, *to; |
| 657 | 191 ngx_uint_t n; |
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192 ngx_http_charset_t *charsets; |
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193 ngx_http_charset_ctx_t *ctx; |
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194 ngx_http_variable_value_t *vv; |
| 653 | 195 ngx_http_charset_loc_conf_t *lcf, *mlcf; |
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196 ngx_http_charset_main_conf_t *mcf; |
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197 |
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198 mcf = ngx_http_get_module_main_conf(r, ngx_http_charset_filter_module); |
| 635 | 199 |
| 657 | 200 charsets = mcf->charsets.elts; |
| 201 n = mcf->charsets.nelts; | |
| 635 | 202 |
| 657 | 203 /* destination charset */ |
| 653 | 204 |
| 205 if (r == r->main) { | |
| 657 | 206 |
| 653 | 207 if (r->headers_out.content_type.len == 0) { |
| 208 return ngx_http_next_header_filter(r); | |
| 209 } | |
|
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210 |
| 657 | 211 if (r->headers_out.override_charset |
| 212 && r->headers_out.override_charset->len) | |
| 653 | 213 { |
| 657 | 214 charset = ngx_http_charset_get_charset(charsets, n, |
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215 r->headers_out.override_charset); |
| 657 | 216 |
| 217 if (charset == NGX_HTTP_NO_CHARSET) { | |
| 661 | 218 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| 657 | 219 "unknown charset \"%V\" to override", |
| 659 | 220 r->headers_out.override_charset); |
| 657 | 221 |
| 222 return ngx_http_next_header_filter(r); | |
| 223 } | |
| 224 | |
| 225 } else { | |
| 226 mlcf = ngx_http_get_module_loc_conf(r, | |
| 227 ngx_http_charset_filter_module); | |
| 228 charset = mlcf->charset; | |
| 229 | |
| 230 if (charset == NGX_HTTP_NO_CHARSET) { | |
| 231 return ngx_http_next_header_filter(r); | |
| 232 } | |
| 233 | |
| 234 if (r->headers_out.charset.len) { | |
| 235 if (mlcf->override_charset == 0) { | |
| 236 return ngx_http_next_header_filter(r); | |
| 237 } | |
| 238 | |
| 239 } else { | |
| 240 ct = r->headers_out.content_type.data; | |
| 241 | |
| 242 if (ngx_strncasecmp(ct, "text/", 5) != 0 | |
| 243 && ngx_strncasecmp(ct, "application/x-javascript", 24) != 0) | |
| 244 { | |
| 245 return ngx_http_next_header_filter(r); | |
| 246 } | |
| 247 } | |
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248 |
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249 if (charset >= NGX_HTTP_CHARSET_VAR) { |
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250 vv = ngx_http_get_indexed_variable(r, |
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251 charset - NGX_HTTP_CHARSET_VAR); |
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252 |
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253 charset = ngx_http_charset_get_charset(charsets, n, |
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254 (ngx_str_t *) vv); |
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255 } |
| 653 | 256 } |
| 257 | |
| 258 } else { | |
| 657 | 259 ctx = ngx_http_get_module_ctx(r->main, ngx_http_charset_filter_module); |
| 260 | |
| 261 if (ctx == NULL) { | |
| 262 | |
| 263 mc = &r->main->headers_out.charset; | |
| 264 | |
| 265 if (mc->len == 0) { | |
| 266 return ngx_http_next_header_filter(r); | |
| 267 } | |
| 268 | |
| 269 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_charset_ctx_t)); | |
| 270 if (ctx == NULL) { | |
| 271 return NGX_ERROR; | |
| 272 } | |
| 273 | |
| 274 ngx_http_set_ctx(r->main, ctx, ngx_http_charset_filter_module); | |
| 653 | 275 |
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276 charset = ngx_http_charset_get_charset(charsets, n, mc); |
| 657 | 277 |
| 278 ctx->charset = charset; | |
| 279 | |
| 661 | 280 } else { |
| 281 charset = ctx->charset; | |
| 653 | 282 } |
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283 } |
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284 |
| 657 | 285 /* source charset */ |
| 635 | 286 |
| 657 | 287 if (r->headers_out.charset.len == 0) { |
| 288 lcf = ngx_http_get_module_loc_conf(r, ngx_http_charset_filter_module); | |
| 635 | 289 |
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290 source_charset = lcf->source_charset; |
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291 |
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292 if (source_charset >= NGX_HTTP_CHARSET_VAR) { |
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293 vv = ngx_http_get_indexed_variable(r, |
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294 source_charset - NGX_HTTP_CHARSET_VAR); |
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295 |
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296 source_charset = ngx_http_charset_get_charset(charsets, n, |
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297 (ngx_str_t *) vv); |
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298 } |
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299 |
| 661 | 300 if (charset != NGX_HTTP_NO_CHARSET) { |
| 301 return ngx_http_charset_set_charset(r, mcf->charsets.elts, charset, | |
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302 source_charset); |
| 661 | 303 } |
| 304 | |
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305 if (source_charset == NGX_CONF_UNSET) { |
| 661 | 306 return ngx_http_next_header_filter(r); |
| 307 } | |
| 308 | |
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309 from = &charsets[source_charset].name; |
| 663 | 310 to = &r->main->headers_out.charset; |
| 661 | 311 |
| 663 | 312 goto no_charset_map; |
| 657 | 313 } |
| 635 | 314 |
| 657 | 315 source_charset = ngx_http_charset_get_charset(charsets, n, |
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316 &r->headers_out.charset); |
| 635 | 317 |
| 661 | 318 if (charset == NGX_HTTP_NO_CHARSET |
| 319 || source_charset == NGX_HTTP_NO_CHARSET) | |
| 320 { | |
| 321 if (charset != source_charset | |
| 322 || ngx_strcasecmp(r->main->headers_out.charset.data, | |
| 323 r->headers_out.charset.data) | |
| 324 != 0) | |
| 325 { | |
| 663 | 326 from = &r->headers_out.charset; |
| 327 to = (charset == NGX_HTTP_NO_CHARSET) ? | |
| 328 &r->main->headers_out.charset: | |
| 329 &charsets[charset].name; | |
| 330 | |
| 331 goto no_charset_map; | |
| 661 | 332 } |
| 635 | 333 |
| 657 | 334 return ngx_http_next_header_filter(r); |
| 335 } | |
| 635 | 336 |
| 657 | 337 if (source_charset != charset |
| 338 && (charsets[source_charset].tables == NULL | |
| 339 || charsets[source_charset].tables[charset] == NULL)) | |
| 340 { | |
| 663 | 341 from = &charsets[source_charset].name; |
| 342 to = &charsets[charset].name; | |
| 635 | 343 |
| 663 | 344 goto no_charset_map; |
|
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345 } |
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346 |
| 657 | 347 r->headers_out.content_type.len = r->headers_out.content_type_len; |
| 348 | |
| 349 return ngx_http_charset_set_charset(r, mcf->charsets.elts, charset, | |
| 350 source_charset); | |
| 663 | 351 |
| 352 no_charset_map: | |
| 353 | |
| 354 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 355 "no \"charset_map\" between the charsets " | |
| 356 "\"%V\" and \"%V\"", from, to); | |
| 357 | |
| 358 return ngx_http_next_header_filter(r); | |
| 657 | 359 } |
| 360 | |
| 361 | |
| 362 static ngx_int_t | |
| 363 ngx_http_charset_get_charset(ngx_http_charset_t *charsets, ngx_uint_t n, | |
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364 ngx_str_t *charset) |
| 657 | 365 { |
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366 size_t len; |
| 657 | 367 ngx_uint_t i; |
| 368 | |
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369 len = charset->len & 0xffff; |
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370 |
| 657 | 371 for (i = 0; i < n; i++) { |
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372 if (charsets[i].name.len != len) { |
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373 continue; |
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374 } |
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375 |
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376 if (ngx_strncasecmp(charsets[i].name.data, charset->data, len) == 0) { |
| 657 | 377 return i; |
| 378 } | |
| 379 } | |
| 380 | |
| 381 return NGX_HTTP_NO_CHARSET; | |
| 382 } | |
| 383 | |
| 384 | |
| 385 static ngx_int_t | |
| 386 ngx_http_charset_set_charset(ngx_http_request_t *r, | |
| 387 ngx_http_charset_t *charsets, ngx_int_t charset, ngx_int_t source_charset) | |
| 388 { | |
| 389 ngx_http_charset_ctx_t *ctx; | |
| 390 | |
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391 if (r->headers_out.status == NGX_HTTP_MOVED_PERMANENTLY |
| 501 | 392 || r->headers_out.status == NGX_HTTP_MOVED_TEMPORARILY) |
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393 { |
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394 /* |
| 635 | 395 * do not set charset for the redirect because NN 4.x |
| 396 * use this charset instead of the next page charset | |
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397 */ |
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398 |
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399 r->headers_out.charset.len = 0; |
| 657 | 400 |
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401 return ngx_http_next_header_filter(r); |
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402 } |
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403 |
| 635 | 404 r->headers_out.charset = charsets[charset].name; |
| 405 r->utf8 = charsets[charset].utf8; | |
| 406 | |
| 407 if (source_charset == NGX_CONF_UNSET || source_charset == charset) { | |
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408 return ngx_http_next_header_filter(r); |
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409 } |
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410 |
| 501 | 411 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_charset_ctx_t)); |
| 412 if (ctx == NULL) { | |
| 413 return NGX_ERROR; | |
| 414 } | |
| 415 | |
| 416 ngx_http_set_ctx(r, ctx, ngx_http_charset_filter_module); | |
| 417 | |
| 635 | 418 ctx->table = charsets[source_charset].tables[charset]; |
| 419 ctx->charset = charset; | |
| 657 | 420 ctx->length = charsets[charset].length; |
| 421 ctx->from_utf8 = charsets[source_charset].utf8; | |
| 422 ctx->to_utf8 = charsets[charset].utf8; | |
| 423 | |
| 663 | 424 r->filter_need_in_memory = 1; |
| 425 | |
| 657 | 426 if ((ctx->to_utf8 || ctx->from_utf8) && r == r->main) { |
| 427 ngx_http_clear_content_length(r); | |
| 663 | 428 |
| 429 } else { | |
| 430 r->filter_need_temporary = 1; | |
| 657 | 431 } |
|
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432 |
|
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433 return ngx_http_next_header_filter(r); |
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434 } |
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435 |
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436 |
| 501 | 437 static ngx_int_t |
| 438 ngx_http_charset_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
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439 { |
| 657 | 440 ngx_int_t rc; |
| 441 ngx_buf_t *b; | |
| 442 ngx_chain_t *cl, *out, **ll; | |
| 635 | 443 ngx_http_charset_ctx_t *ctx; |
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444 |
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445 ctx = ngx_http_get_module_ctx(r, ngx_http_charset_filter_module); |
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446 |
| 635 | 447 if (ctx == NULL || ctx->table == NULL) { |
|
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parents:
338
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changeset
|
448 return ngx_http_next_body_filter(r, in); |
|
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nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
449 } |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
338
diff
changeset
|
450 |
| 657 | 451 if ((ctx->to_utf8 || ctx->from_utf8) || ctx->busy) { |
| 452 | |
| 453 out = NULL; | |
| 454 ll = &out; | |
| 455 | |
| 456 for (cl = in; cl; cl = cl->next) { | |
| 457 b = cl->buf; | |
| 458 | |
| 459 if (ngx_buf_size(b) == 0) { | |
| 665 | 460 |
| 461 *ll = ngx_alloc_chain_link(r->pool); | |
| 462 if (*ll == NULL) { | |
| 463 return NGX_ERROR; | |
| 464 } | |
| 465 | |
| 466 (*ll)->buf = b; | |
| 467 (*ll)->next = NULL; | |
| 468 | |
| 469 ll = &(*ll)->next; | |
| 470 | |
| 657 | 471 continue; |
| 472 } | |
| 473 | |
| 474 if (ctx->to_utf8) { | |
| 475 *ll = ngx_http_charset_recode_to_utf8(r->pool, b, ctx); | |
| 476 | |
| 477 } else { | |
| 478 *ll = ngx_http_charset_recode_from_utf8(r->pool, b, ctx); | |
| 479 } | |
| 480 | |
| 481 if (*ll == NULL) { | |
| 482 return NGX_ERROR; | |
| 483 } | |
| 484 | |
| 485 while (*ll) { | |
| 486 ll = &(*ll)->next; | |
| 487 } | |
| 488 } | |
| 489 | |
| 490 rc = ngx_http_next_body_filter(r, out); | |
| 491 | |
| 492 if (out) { | |
| 493 if (ctx->busy == NULL) { | |
| 494 ctx->busy = out; | |
| 495 | |
| 496 } else { | |
| 497 for (cl = ctx->busy; cl->next; cl = cl->next) { /* void */ } | |
| 498 cl->next = out; | |
| 499 } | |
| 500 } | |
| 501 | |
| 502 while (ctx->busy) { | |
| 503 | |
| 504 cl = ctx->busy; | |
| 505 b = cl->buf; | |
| 506 | |
| 507 if (ngx_buf_size(b) != 0) { | |
| 508 break; | |
| 509 } | |
| 510 | |
| 511 #if (NGX_HAVE_WRITE_ZEROCOPY) | |
| 512 if (b->zerocopy_busy) { | |
| 513 break; | |
| 514 } | |
| 515 #endif | |
| 516 | |
| 517 ctx->busy = cl->next; | |
| 518 | |
| 519 if (b->tag != (ngx_buf_tag_t) &ngx_http_charset_filter_module) { | |
| 520 continue; | |
| 521 } | |
| 522 | |
| 523 if (b->shadow) { | |
| 524 b->shadow->pos = b->shadow->last; | |
| 525 } | |
| 526 | |
| 527 if (b->pos) { | |
| 528 cl->next = ctx->free_buffers; | |
| 529 ctx->free_buffers = cl; | |
| 530 continue; | |
| 531 } | |
| 532 | |
| 533 cl->next = ctx->free_bufs; | |
| 534 ctx->free_bufs = cl; | |
| 535 } | |
| 536 | |
| 537 return rc; | |
| 538 } | |
| 539 | |
|
339
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nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
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changeset
|
540 for (cl = in; cl; cl = cl->next) { |
| 635 | 541 (void) ngx_http_charset_recode(cl->buf, ctx->table); |
|
339
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parents:
338
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changeset
|
542 } |
|
8c5b69141dfd
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parents:
338
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changeset
|
543 |
|
155
46eb23d9471d
nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
139
diff
changeset
|
544 return ngx_http_next_body_filter(r, in); |
|
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
545 } |
|
339
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nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
546 |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
547 |
| 501 | 548 static ngx_uint_t |
| 635 | 549 ngx_http_charset_recode(ngx_buf_t *b, u_char *table) |
|
339
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parents:
338
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changeset
|
550 { |
| 635 | 551 u_char *p; |
|
339
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parents:
338
diff
changeset
|
552 |
|
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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parents:
340
diff
changeset
|
553 for (p = b->pos; p < b->last; p++) { |
| 635 | 554 |
| 555 if (*p == table[*p]) { | |
| 556 continue; | |
| 455 | 557 } |
| 558 | |
| 559 while (p < b->last) { | |
| 560 *p = table[*p]; | |
| 561 p++; | |
| 562 } | |
| 563 | |
| 564 b->in_file = 0; | |
| 635 | 565 |
| 566 return 1; | |
| 455 | 567 } |
| 568 | |
| 635 | 569 return 0; |
|
339
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
570 } |
|
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
571 |
|
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
572 |
| 657 | 573 static ngx_chain_t * |
| 574 ngx_http_charset_recode_from_utf8(ngx_pool_t *pool, ngx_buf_t *buf, | |
| 575 ngx_http_charset_ctx_t *ctx) | |
| 576 { | |
| 577 size_t len, size; | |
| 578 u_char c, *p, *src, *dst, *saved, **table; | |
| 579 uint32_t n; | |
| 580 ngx_buf_t *b; | |
| 581 ngx_uint_t i; | |
| 582 ngx_chain_t *out, *cl, **ll; | |
| 583 | |
| 584 src = buf->pos; | |
| 585 | |
| 586 if (ctx->saved_len == 0) { | |
| 587 | |
| 588 for ( /* void */ ; src < buf->last; src++) { | |
| 589 | |
| 590 if (*src < 0x80) { | |
| 591 continue; | |
| 592 } | |
| 593 | |
| 594 len = src - buf->pos; | |
| 595 | |
| 596 if (len > 512) { | |
| 597 out = ngx_http_charset_get_buf(pool, ctx); | |
| 598 if (out == NULL) { | |
| 599 return NULL; | |
| 600 } | |
| 601 | |
| 602 b = out->buf; | |
| 603 | |
| 604 b->temporary = buf->temporary; | |
| 605 b->memory = buf->memory; | |
| 606 b->mmap = buf->mmap; | |
| 607 b->flush = buf->flush; | |
| 608 | |
| 609 b->pos = buf->pos; | |
| 610 b->last = src; | |
| 611 | |
| 612 out->buf = b; | |
| 613 out->next = NULL; | |
| 614 | |
| 615 size = buf->last - src; | |
| 616 | |
| 617 saved = src; | |
| 618 n = ngx_utf_decode(&saved, size); | |
| 619 | |
| 620 if (n == 0xfffffffe) { | |
| 621 /* incomplete UTF-8 symbol */ | |
| 622 | |
| 623 ngx_memcpy(ctx->saved, src, size); | |
| 624 ctx->saved_len = size; | |
| 625 | |
| 626 b->shadow = buf; | |
| 627 | |
| 628 return out; | |
| 629 } | |
| 630 | |
| 631 } else { | |
| 632 out = NULL; | |
| 633 size = len + buf->last - src; | |
| 634 src = buf->pos; | |
| 635 } | |
| 636 | |
| 637 if (size < NGX_HTML_ENTITY_LEN) { | |
| 638 size += NGX_HTML_ENTITY_LEN; | |
| 639 } | |
| 640 | |
| 641 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 642 if (cl == NULL) { | |
| 643 return NULL; | |
| 644 } | |
| 645 | |
| 646 if (out) { | |
| 647 out->next = cl; | |
| 648 | |
| 649 } else { | |
| 650 out = cl; | |
| 651 } | |
| 652 | |
| 653 b = cl->buf; | |
| 654 dst = b->pos; | |
| 655 | |
| 656 goto recode; | |
| 657 } | |
| 658 | |
| 659 out = ngx_alloc_chain_link(pool); | |
| 660 if (out == NULL) { | |
| 661 return NULL; | |
| 662 } | |
| 663 | |
| 664 out->buf = buf; | |
| 665 out->next = NULL; | |
| 666 | |
| 667 return out; | |
| 668 } | |
| 669 | |
| 670 /* process incomplete UTF sequence from previous buffer */ | |
| 671 | |
| 672 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pool->log, 0, | |
| 673 "http charset utf saved: %z", ctx->saved_len); | |
| 674 | |
| 675 p = src; | |
| 676 | |
| 677 for (i = ctx->saved_len; i < NGX_UTF_LEN; i++) { | |
| 678 ctx->saved[i] = *p++; | |
| 679 | |
| 680 if (p == buf->last) { | |
| 681 break; | |
| 682 } | |
| 683 } | |
| 684 | |
| 685 saved = ctx->saved; | |
| 686 n = ngx_utf_decode(&saved, i); | |
| 687 | |
| 688 c = '\0'; | |
| 689 | |
| 690 if (n < 0x10000) { | |
| 691 table = (u_char **) ctx->table; | |
| 692 p = table[n >> 8]; | |
| 693 | |
| 694 if (p) { | |
| 695 c = p[n & 0xff]; | |
| 696 } | |
| 697 | |
| 698 } else if (n == 0xfffffffe) { | |
| 699 | |
| 700 /* incomplete UTF-8 symbol */ | |
| 701 | |
| 702 if (i < NGX_UTF_LEN) { | |
| 703 out = ngx_http_charset_get_buf(pool, ctx); | |
| 704 if (out == NULL) { | |
| 705 return NULL; | |
| 706 } | |
| 707 | |
| 708 b = out->buf; | |
| 709 | |
| 710 b->pos = buf->pos; | |
| 711 b->last = buf->last; | |
| 712 b->sync = 1; | |
| 713 b->shadow = buf; | |
| 714 | |
| 715 ngx_memcpy(&ctx->saved[ctx->saved_len], src, i); | |
| 716 ctx->saved_len += i; | |
| 717 | |
| 718 return out; | |
| 719 } | |
| 720 } | |
| 721 | |
| 722 size = buf->last - buf->pos; | |
| 723 | |
| 724 if (size < NGX_HTML_ENTITY_LEN) { | |
| 725 size += NGX_HTML_ENTITY_LEN; | |
| 726 } | |
| 727 | |
| 728 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 729 if (cl == NULL) { | |
| 730 return NULL; | |
| 731 } | |
| 732 | |
| 733 out = cl; | |
| 734 | |
| 735 b = cl->buf; | |
| 736 dst = b->pos; | |
| 737 | |
| 738 if (c) { | |
| 739 *dst++ = c; | |
| 740 | |
| 741 } else if (n == 0xfffffffe) { | |
| 742 *dst++ = '?'; | |
| 743 | |
| 744 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pool->log, 0, | |
| 745 "http charset invalid utf 0"); | |
| 746 | |
| 747 saved = &ctx->saved[NGX_UTF_LEN]; | |
| 748 | |
| 749 } else if (n > 0x10ffff) { | |
| 750 *dst++ = '?'; | |
| 751 | |
| 752 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pool->log, 0, | |
| 753 "http charset invalid utf 1"); | |
| 754 | |
| 755 } else { | |
| 756 dst = ngx_sprintf(dst, "&#%uD;", n); | |
| 757 } | |
| 758 | |
| 759 src += (saved - ctx->saved) - ctx->saved_len; | |
| 760 ctx->saved_len = 0; | |
| 761 | |
| 762 recode: | |
| 763 | |
| 764 ll = &cl->next; | |
| 765 | |
| 766 table = (u_char **) ctx->table; | |
| 767 | |
| 768 while (src < buf->last) { | |
| 769 | |
| 770 if ((size_t) (b->end - dst) < NGX_HTML_ENTITY_LEN) { | |
| 771 b->last = dst; | |
| 772 | |
| 773 size = buf->last - src + NGX_HTML_ENTITY_LEN; | |
| 774 | |
| 775 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 776 if (cl == NULL) { | |
| 777 return NULL; | |
| 778 } | |
| 779 | |
| 780 *ll = cl; | |
| 781 ll = &cl->next; | |
| 782 | |
| 783 b = cl->buf; | |
| 784 dst = b->pos; | |
| 785 } | |
| 786 | |
| 787 if (*src < 0x80) { | |
| 788 *dst++ = *src++; | |
| 789 continue; | |
| 790 } | |
| 791 | |
| 792 len = buf->last - src; | |
| 793 | |
| 794 n = ngx_utf_decode(&src, len); | |
| 795 | |
| 796 if (n < 0x10000) { | |
| 797 | |
| 798 p = table[n >> 8]; | |
| 799 | |
| 800 if (p) { | |
| 801 c = p[n & 0xff]; | |
| 802 | |
| 803 if (c) { | |
| 804 *dst++ = c; | |
| 805 continue; | |
| 806 } | |
| 807 } | |
| 808 | |
| 809 dst = ngx_sprintf(dst, "&#%uD;", n); | |
| 810 | |
| 811 continue; | |
| 812 } | |
| 813 | |
| 814 if (n == 0xfffffffe) { | |
| 815 /* incomplete UTF-8 symbol */ | |
| 816 | |
| 817 ngx_memcpy(ctx->saved, src, len); | |
| 818 ctx->saved_len = len; | |
| 819 | |
| 820 if (b->pos == dst) { | |
| 821 b->sync = 1; | |
| 822 b->temporary = 0; | |
| 823 } | |
| 824 | |
| 825 break; | |
| 826 } | |
| 827 | |
| 828 if (n > 0x10ffff) { | |
| 829 *dst++ = '?'; | |
| 830 | |
| 831 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pool->log, 0, | |
| 832 "http charset invalid utf 2"); | |
| 833 | |
| 834 continue; | |
| 835 } | |
| 836 | |
| 837 /* n > 0xffff */ | |
| 838 | |
| 839 dst = ngx_sprintf(dst, "&#%uD;", n); | |
| 840 } | |
| 841 | |
| 842 b->last = dst; | |
| 843 | |
| 844 b->last_buf = buf->last_buf; | |
| 845 b->last_in_chain = buf->last_in_chain; | |
| 846 b->flush = buf->flush; | |
| 847 | |
| 848 b->shadow = buf; | |
| 849 | |
| 850 return out; | |
| 851 } | |
| 852 | |
| 853 | |
| 854 static ngx_chain_t * | |
| 855 ngx_http_charset_recode_to_utf8(ngx_pool_t *pool, ngx_buf_t *buf, | |
| 856 ngx_http_charset_ctx_t *ctx) | |
| 857 { | |
| 858 size_t len, size; | |
| 859 u_char *p, *src, *dst, *table; | |
| 860 ngx_buf_t *b; | |
| 861 ngx_chain_t *out, *cl, **ll; | |
| 862 | |
| 863 table = ctx->table; | |
| 864 | |
| 865 for (src = buf->pos; src < buf->last; src++) { | |
| 866 if (table[*src * NGX_UTF_LEN] == '\1') { | |
| 867 continue; | |
| 868 } | |
| 869 | |
| 870 goto recode; | |
| 871 } | |
| 872 | |
| 873 out = ngx_alloc_chain_link(pool); | |
| 874 if (out == NULL) { | |
| 875 return NULL; | |
| 876 } | |
| 877 | |
| 878 out->buf = buf; | |
| 879 out->next = NULL; | |
| 880 | |
| 881 return out; | |
| 882 | |
| 883 recode: | |
| 884 | |
| 885 /* | |
| 886 * we assume that there are about half of characters to be recoded, | |
| 887 * so we preallocate "size / 2 + size / 2 * ctx->length" | |
| 888 */ | |
| 889 | |
| 890 len = src - buf->pos; | |
| 891 | |
| 892 if (len > 512) { | |
| 893 out = ngx_http_charset_get_buf(pool, ctx); | |
| 894 if (out == NULL) { | |
| 895 return NULL; | |
| 896 } | |
| 897 | |
| 898 b = out->buf; | |
| 899 | |
| 900 b->temporary = buf->temporary; | |
| 901 b->memory = buf->memory; | |
| 902 b->mmap = buf->mmap; | |
| 903 b->flush = buf->flush; | |
| 904 | |
| 905 b->pos = buf->pos; | |
| 906 b->last = src; | |
| 907 | |
| 908 out->buf = b; | |
| 909 out->next = NULL; | |
| 910 | |
| 911 size = buf->last - src; | |
| 912 size = size / 2 + size / 2 * ctx->length; | |
| 913 | |
| 914 } else { | |
| 915 out = NULL; | |
| 916 | |
| 917 size = buf->last - src; | |
| 918 size = len + size / 2 + size / 2 * ctx->length; | |
| 919 | |
| 920 src = buf->pos; | |
| 921 } | |
| 922 | |
| 923 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 924 if (cl == NULL) { | |
| 925 return NULL; | |
| 926 } | |
| 927 | |
| 928 if (out) { | |
| 929 out->next = cl; | |
| 930 | |
| 931 } else { | |
| 932 out = cl; | |
| 933 } | |
| 934 | |
| 935 ll = &cl->next; | |
| 936 | |
| 937 b = cl->buf; | |
| 938 dst = b->pos; | |
| 939 | |
| 940 while (src < buf->last) { | |
| 941 | |
| 942 p = &table[*src++ * NGX_UTF_LEN]; | |
| 943 len = *p++; | |
| 944 | |
| 945 if ((size_t) (b->end - dst) < len) { | |
| 946 b->last = dst; | |
| 947 | |
| 948 size = buf->last - src; | |
| 949 size = len + size / 2 + size / 2 * ctx->length; | |
| 950 | |
| 951 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 952 if (cl == NULL) { | |
| 953 return NULL; | |
| 954 } | |
| 955 | |
| 956 *ll = cl; | |
| 957 ll = &cl->next; | |
| 958 | |
| 959 b = cl->buf; | |
| 960 dst = b->pos; | |
| 961 } | |
| 962 | |
| 963 while (len) { | |
| 964 *dst++ = *p++; | |
| 965 len--; | |
| 966 } | |
| 967 } | |
| 968 | |
| 969 b->last = dst; | |
| 970 | |
| 971 b->last_buf = buf->last_buf; | |
| 972 b->last_in_chain = buf->last_in_chain; | |
| 973 b->flush = buf->flush; | |
| 974 | |
| 975 b->shadow = buf; | |
| 976 | |
| 977 return out; | |
| 978 } | |
| 979 | |
| 980 | |
| 981 static ngx_chain_t * | |
| 982 ngx_http_charset_get_buf(ngx_pool_t *pool, ngx_http_charset_ctx_t *ctx) | |
| 983 { | |
| 984 ngx_chain_t *cl; | |
| 985 | |
| 986 cl = ctx->free_bufs; | |
| 987 | |
| 988 if (cl) { | |
| 989 ctx->free_bufs = cl->next; | |
| 990 | |
| 991 cl->buf->shadow = NULL; | |
| 992 cl->next = NULL; | |
| 993 | |
| 994 return cl; | |
| 995 } | |
| 996 | |
| 997 cl = ngx_alloc_chain_link(pool); | |
| 998 if (cl == NULL) { | |
| 999 return NULL; | |
| 1000 } | |
| 1001 | |
| 1002 cl->buf = ngx_calloc_buf(pool); | |
| 1003 if (cl->buf == NULL) { | |
| 1004 return NULL; | |
| 1005 } | |
| 1006 | |
| 1007 cl->next = NULL; | |
| 1008 | |
| 1009 cl->buf->tag = (ngx_buf_tag_t) &ngx_http_charset_filter_module; | |
| 1010 | |
| 1011 return cl; | |
| 1012 } | |
| 1013 | |
| 1014 | |
| 1015 static ngx_chain_t * | |
| 1016 ngx_http_charset_get_buffer(ngx_pool_t *pool, ngx_http_charset_ctx_t *ctx, | |
| 1017 size_t size) | |
| 1018 { | |
| 1019 ngx_buf_t *b; | |
| 1020 ngx_chain_t *cl, **ll; | |
| 1021 | |
| 1022 for (ll = &ctx->free_buffers, cl = ctx->free_buffers; | |
| 1023 cl; | |
| 1024 ll = &cl->next, cl = cl->next) | |
| 1025 { | |
| 1026 b = cl->buf; | |
| 1027 | |
| 1028 if ((size_t) (b->end - b->start) >= size) { | |
| 1029 *ll = cl->next; | |
| 1030 cl->next = NULL; | |
| 1031 | |
| 1032 b->pos = b->start; | |
| 1033 b->temporary = 1; | |
| 1034 b->shadow = NULL; | |
| 1035 | |
| 1036 return cl; | |
| 1037 } | |
| 1038 } | |
| 1039 | |
| 1040 cl = ngx_alloc_chain_link(pool); | |
| 1041 if (cl == NULL) { | |
| 1042 return NULL; | |
| 1043 } | |
| 1044 | |
| 1045 cl->buf = ngx_create_temp_buf(pool, size); | |
| 1046 if (cl->buf == NULL) { | |
| 1047 return NULL; | |
| 1048 } | |
| 1049 | |
| 1050 cl->next = NULL; | |
| 1051 | |
| 1052 cl->buf->temporary = 1; | |
| 1053 cl->buf->tag = (ngx_buf_tag_t) &ngx_http_charset_filter_module; | |
| 1054 | |
| 1055 return cl; | |
| 1056 } | |
| 1057 | |
| 1058 | |
| 501 | 1059 static char * |
| 657 | 1060 ngx_http_charset_map_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
|
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1061 { |
|
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1062 ngx_http_charset_main_conf_t *mcf = conf; |
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1063 |
| 657 | 1064 char *rv; |
| 1065 u_char *p, *dst2src, **pp; | |
| 1066 ngx_int_t src, dst; | |
| 1067 ngx_uint_t i, n; | |
| 1068 ngx_str_t *value; | |
| 1069 ngx_conf_t pvcf; | |
| 1070 ngx_http_charset_t *charset; | |
| 1071 ngx_http_charset_tables_t *table; | |
| 1072 ngx_http_charset_conf_ctx_t ctx; | |
|
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1073 |
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1074 value = cf->args->elts; |
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1075 |
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1076 src = ngx_http_add_charset(&mcf->charsets, &value[1]); |
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1077 if (src == NGX_ERROR) { |
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1078 return NGX_CONF_ERROR; |
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1079 } |
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1080 |
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1081 dst = ngx_http_add_charset(&mcf->charsets, &value[2]); |
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1082 if (dst == NGX_ERROR) { |
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1083 return NGX_CONF_ERROR; |
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1084 } |
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1085 |
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1086 if (src == dst) { |
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1087 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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1088 "\"charset_map\" between the same charsets " |
| 461 | 1089 "\"%V\" and \"%V\"", &value[1], &value[2]); |
|
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1090 return NGX_CONF_ERROR; |
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1091 } |
|
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1092 |
|
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1093 table = mcf->tables.elts; |
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1094 for (i = 0; i < mcf->tables.nelts; i++) { |
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1095 if ((src == table->src && dst == table->dst) |
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1096 || (src == table->dst && dst == table->src)) |
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1097 { |
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1098 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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1099 "duplicate \"charset_map\" between " |
| 461 | 1100 "\"%V\" and \"%V\"", &value[1], &value[2]); |
|
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1101 return NGX_CONF_ERROR; |
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1102 } |
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1103 } |
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1104 |
| 501 | 1105 table = ngx_array_push(&mcf->tables); |
| 1106 if (table == NULL) { | |
|
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1107 return NGX_CONF_ERROR; |
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1108 } |
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1109 |
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1110 table->src = src; |
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1111 table->dst = dst; |
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1112 |
| 657 | 1113 if (ngx_strcasecmp(value[2].data, "utf-8") == 0) { |
| 1114 table->src2dst = ngx_pcalloc(cf->pool, 256 * NGX_UTF_LEN); | |
| 1115 if (table->src2dst == NULL) { | |
| 1116 return NGX_CONF_ERROR; | |
| 1117 } | |
| 1118 | |
| 1119 table->dst2src = ngx_pcalloc(cf->pool, 256 * sizeof(void *)); | |
| 1120 if (table->dst2src == NULL) { | |
| 1121 return NGX_CONF_ERROR; | |
| 1122 } | |
| 1123 | |
| 1124 dst2src = ngx_pcalloc(cf->pool, 256); | |
| 1125 if (dst2src == NULL) { | |
| 1126 return NGX_CONF_ERROR; | |
| 1127 } | |
| 1128 | |
| 1129 pp = (u_char **) &table->dst2src[0]; | |
| 1130 pp[0] = dst2src; | |
| 1131 | |
| 1132 for (i = 0; i < 128; i++) { | |
| 1133 p = &table->src2dst[i * NGX_UTF_LEN]; | |
| 1134 p[0] = '\1'; | |
| 1135 p[1] = (u_char) i; | |
| 1136 dst2src[i] = (u_char) i; | |
| 1137 } | |
|
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1138 |
| 657 | 1139 for (/* void */; i < 256; i++) { |
| 1140 p = &table->src2dst[i * NGX_UTF_LEN]; | |
| 1141 p[0] = '\1'; | |
| 1142 p[1] = '?'; | |
| 1143 } | |
| 1144 | |
| 1145 } else { | |
| 1146 table->src2dst = ngx_palloc(cf->pool, 256); | |
| 1147 if (table->src2dst == NULL) { | |
| 1148 return NGX_CONF_ERROR; | |
| 1149 } | |
| 1150 | |
| 1151 table->dst2src = ngx_palloc(cf->pool, 256); | |
| 1152 if (table->dst2src == NULL) { | |
| 1153 return NGX_CONF_ERROR; | |
| 1154 } | |
| 1155 | |
| 1156 for (i = 0; i < 128; i++) { | |
| 1157 table->src2dst[i] = (u_char) i; | |
| 1158 table->dst2src[i] = (u_char) i; | |
| 1159 } | |
| 1160 | |
| 1161 for (/* void */; i < 256; i++) { | |
| 1162 table->src2dst[i] = '?'; | |
| 1163 table->dst2src[i] = '?'; | |
| 1164 } | |
|
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1165 } |
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1166 |
| 657 | 1167 charset = mcf->charsets.elts; |
|
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1168 |
| 657 | 1169 ctx.table = table; |
| 1170 ctx.charset = &charset[dst]; | |
| 1171 ctx.characters = 0; | |
|
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1172 |
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|
1173 pvcf = *cf; |
| 657 | 1174 cf->ctx = &ctx; |
| 1175 cf->handler = ngx_http_charset_map; | |
|
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1176 cf->handler_conf = conf; |
| 501 | 1177 |
|
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1178 rv = ngx_conf_parse(cf, NULL); |
| 501 | 1179 |
|
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1180 *cf = pvcf; |
|
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1181 |
| 657 | 1182 if (ctx.characters) { |
| 1183 n = ctx.charset->length; | |
| 1184 ctx.charset->length /= ctx.characters; | |
| 1185 | |
| 1186 if (((n * 10) / ctx.characters) % 10 > 4) { | |
| 1187 ctx.charset->length++; | |
| 1188 } | |
| 1189 } | |
| 1190 | |
|
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1191 return rv; |
|
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1192 } |
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1193 |
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1194 |
| 501 | 1195 static char * |
| 657 | 1196 ngx_http_charset_map(ngx_conf_t *cf, ngx_command_t *dummy, void *conf) |
|
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|
1197 { |
| 657 | 1198 u_char *p, *dst2src, **pp; |
| 1199 uint32_t n; | |
| 1200 ngx_int_t src, dst; | |
| 1201 ngx_str_t *value; | |
| 1202 ngx_uint_t i; | |
| 1203 ngx_http_charset_tables_t *table; | |
| 1204 ngx_http_charset_conf_ctx_t *ctx; | |
|
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1205 |
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1206 if (cf->args->nelts != 2) { |
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1207 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameters number"); |
|
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1208 return NGX_CONF_ERROR; |
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1209 } |
|
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|
1210 |
|
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1211 value = cf->args->elts; |
|
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1212 |
|
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1213 src = ngx_hextoi(value[0].data, value[0].len); |
|
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1214 if (src == NGX_ERROR || src > 255) { |
|
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|
1215 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 461 | 1216 "invalid value \"%V\"", &value[0]); |
|
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1217 return NGX_CONF_ERROR; |
|
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|
1218 } |
|
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1219 |
| 657 | 1220 ctx = cf->ctx; |
| 1221 table = ctx->table; | |
| 1222 | |
| 1223 if (ctx->charset->utf8) { | |
| 1224 p = &table->src2dst[src * NGX_UTF_LEN]; | |
| 1225 | |
| 1226 *p++ = (u_char) (value[1].len / 2); | |
| 1227 | |
| 1228 for (i = 0; i < value[1].len; i += 2) { | |
| 1229 dst = ngx_hextoi(&value[1].data[i], 2); | |
| 1230 if (dst == NGX_ERROR || dst > 255) { | |
| 1231 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 1232 "invalid value \"%V\"", &value[1]); | |
| 1233 return NGX_CONF_ERROR; | |
| 1234 } | |
| 1235 | |
| 1236 *p++ = (u_char) dst; | |
| 1237 } | |
| 1238 | |
| 1239 i /= 2; | |
| 1240 | |
| 1241 ctx->charset->length += i; | |
| 1242 ctx->characters++; | |
| 1243 | |
| 1244 p = &table->src2dst[src * NGX_UTF_LEN] + 1; | |
| 1245 | |
| 1246 n = ngx_utf_decode(&p, i); | |
| 1247 | |
| 1248 if (n > 0xffff) { | |
| 1249 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 1250 "invalid value \"%V\"", &value[1]); | |
| 1251 return NGX_CONF_ERROR; | |
| 1252 } | |
| 1253 | |
| 1254 pp = (u_char **) &table->dst2src[0]; | |
| 1255 | |
| 1256 dst2src = pp[n >> 8]; | |
| 1257 | |
| 1258 if (dst2src == NULL) { | |
| 1259 dst2src = ngx_pcalloc(cf->pool, 256); | |
| 1260 if (dst2src == NULL) { | |
| 1261 return NGX_CONF_ERROR; | |
| 1262 } | |
| 1263 | |
| 1264 pp[n >> 8] = dst2src; | |
| 1265 } | |
| 1266 | |
| 1267 dst2src[n & 0xff] = (u_char) src; | |
| 1268 | |
| 1269 } else { | |
| 1270 dst = ngx_hextoi(value[1].data, value[1].len); | |
| 1271 if (dst == NGX_ERROR || dst > 255) { | |
| 1272 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 1273 "invalid value \"%V\"", &value[1]); | |
| 1274 return NGX_CONF_ERROR; | |
| 1275 } | |
| 1276 | |
| 1277 table->src2dst[src] = (u_char) dst; | |
| 1278 table->dst2src[dst] = (u_char) src; | |
|
338
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|
1279 } |
|
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|
1280 |
|
339
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|
1281 return NGX_CONF_OK; |
|
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diff
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|
1282 } |
|
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diff
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|
1283 |
|
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diff
changeset
|
1284 |
| 501 | 1285 static char * |
| 1286 ngx_http_set_charset_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
|
339
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parents:
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diff
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|
1287 { |
|
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diff
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|
1288 char *p = conf; |
|
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diff
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|
1289 |
|
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diff
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|
1290 ngx_int_t *cp; |
|
752
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diff
changeset
|
1291 ngx_str_t *value, var; |
|
339
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diff
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|
1292 ngx_http_charset_main_conf_t *mcf; |
|
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338
diff
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|
1293 |
|
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diff
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|
1294 cp = (ngx_int_t *) (p + cmd->offset); |
|
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diff
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|
1295 |
|
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parents:
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diff
changeset
|
1296 if (*cp != NGX_CONF_UNSET) { |
|
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diff
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|
1297 return "is duplicate"; |
|
8c5b69141dfd
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parents:
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diff
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|
1298 } |
|
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diff
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|
1299 |
| 529 | 1300 value = cf->args->elts; |
| 1301 | |
| 1302 if (cmd->offset == offsetof(ngx_http_charset_loc_conf_t, charset) | |
| 1303 && ngx_strcmp(value[1].data, "off") == 0) | |
| 1304 { | |
| 1305 *cp = NGX_HTTP_NO_CHARSET; | |
| 1306 return NGX_CONF_OK; | |
| 1307 } | |
| 1308 | |
|
752
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parents:
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diff
changeset
|
1309 |
|
907361d07f25
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parents:
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diff
changeset
|
1310 if (value[1].data[0] == '$') { |
|
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parents:
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diff
changeset
|
1311 var.len = value[1].len - 1; |
|
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parents:
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diff
changeset
|
1312 var.data = value[1].data + 1; |
|
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parents:
681
diff
changeset
|
1313 |
|
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parents:
681
diff
changeset
|
1314 *cp = ngx_http_get_variable_index(cf, &var); |
|
907361d07f25
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parents:
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diff
changeset
|
1315 |
|
907361d07f25
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parents:
681
diff
changeset
|
1316 if (*cp == NGX_ERROR) { |
|
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parents:
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diff
changeset
|
1317 return NGX_CONF_ERROR; |
|
907361d07f25
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parents:
681
diff
changeset
|
1318 } |
|
907361d07f25
ngx_http_charset_module supports the variables
Igor Sysoev <igor@sysoev.ru>
parents:
681
diff
changeset
|
1319 |
|
907361d07f25
ngx_http_charset_module supports the variables
Igor Sysoev <igor@sysoev.ru>
parents:
681
diff
changeset
|
1320 *cp += NGX_HTTP_CHARSET_VAR; |
|
907361d07f25
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parents:
681
diff
changeset
|
1321 |
|
907361d07f25
ngx_http_charset_module supports the variables
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parents:
681
diff
changeset
|
1322 return NGX_CONF_OK; |
|
907361d07f25
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parents:
681
diff
changeset
|
1323 } |
|
907361d07f25
ngx_http_charset_module supports the variables
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parents:
681
diff
changeset
|
1324 |
|
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
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parents:
389
diff
changeset
|
1325 mcf = ngx_http_conf_get_module_main_conf(cf, |
|
6f3b20c1ac50
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parents:
389
diff
changeset
|
1326 ngx_http_charset_filter_module); |
|
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
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parents:
389
diff
changeset
|
1327 |
|
339
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diff
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|
1328 *cp = ngx_http_add_charset(&mcf->charsets, &value[1]); |
|
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parents:
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diff
changeset
|
1329 if (*cp == NGX_ERROR) { |
|
338
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parents:
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diff
changeset
|
1330 return NGX_CONF_ERROR; |
|
0376cffa29e6
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parents:
307
diff
changeset
|
1331 } |
|
0376cffa29e6
nginx-0.0.3-2004-05-20-21:33:52 import
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parents:
307
diff
changeset
|
1332 |
|
0376cffa29e6
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parents:
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diff
changeset
|
1333 return NGX_CONF_OK; |
|
0376cffa29e6
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parents:
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diff
changeset
|
1334 } |
|
0376cffa29e6
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parents:
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diff
changeset
|
1335 |
|
0376cffa29e6
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parents:
307
diff
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|
1336 |
| 501 | 1337 static ngx_int_t |
| 1338 ngx_http_add_charset(ngx_array_t *charsets, ngx_str_t *name) | |
|
339
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parents:
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|
1339 { |
|
8c5b69141dfd
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diff
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|
1340 ngx_uint_t i; |
|
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338
diff
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|
1341 ngx_http_charset_t *c; |
|
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parents:
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diff
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|
1342 |
|
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diff
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|
1343 c = charsets->elts; |
|
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diff
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|
1344 for (i = 0; i < charsets->nelts; i++) { |
|
8c5b69141dfd
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parents:
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diff
changeset
|
1345 if (name->len != c[i].name.len) { |
|
8c5b69141dfd
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parents:
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|
1346 continue; |
|
8c5b69141dfd
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parents:
338
diff
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|
1347 } |
|
8c5b69141dfd
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parents:
338
diff
changeset
|
1348 |
|
8c5b69141dfd
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338
diff
changeset
|
1349 if (ngx_strcasecmp(name->data, c[i].name.data) == 0) { |
|
8c5b69141dfd
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parents:
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diff
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|
1350 break; |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
1351 } |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
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|
1352 } |
|
8c5b69141dfd
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parents:
338
diff
changeset
|
1353 |
|
8c5b69141dfd
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parents:
338
diff
changeset
|
1354 if (i < charsets->nelts) { |
|
8c5b69141dfd
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|
1355 return i; |
|
8c5b69141dfd
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parents:
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diff
changeset
|
1356 } |
|
8c5b69141dfd
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parents:
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diff
changeset
|
1357 |
| 501 | 1358 c = ngx_array_push(charsets); |
| 1359 if (c == NULL) { | |
|
339
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diff
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|
1360 return NGX_ERROR; |
|
8c5b69141dfd
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parents:
338
diff
changeset
|
1361 } |
|
8c5b69141dfd
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338
diff
changeset
|
1362 |
| 455 | 1363 c->tables = NULL; |
|
339
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338
diff
changeset
|
1364 c->name = *name; |
| 657 | 1365 c->length = 0; |
|
339
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338
diff
changeset
|
1366 |
| 523 | 1367 if (ngx_strcasecmp(name->data, "utf-8") == 0) { |
| 1368 c->utf8 = 1; | |
| 667 | 1369 |
| 1370 } else { | |
| 1371 c->utf8 = 0; | |
| 523 | 1372 } |
| 1373 | |
|
339
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|
1374 return i; |
|
8c5b69141dfd
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parents:
338
diff
changeset
|
1375 } |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
1376 |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
1377 |
| 501 | 1378 static void * |
| 1379 ngx_http_charset_create_main_conf(ngx_conf_t *cf) | |
|
338
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parents:
307
diff
changeset
|
1380 { |
|
0376cffa29e6
nginx-0.0.3-2004-05-20-21:33:52 import
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parents:
307
diff
changeset
|
1381 ngx_http_charset_main_conf_t *mcf; |
|
0376cffa29e6
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parents:
307
diff
changeset
|
1382 |
| 501 | 1383 mcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_charset_main_conf_t)); |
| 1384 if (mcf == NULL) { | |
|
339
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diff
changeset
|
1385 return NGX_CONF_ERROR; |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
1386 } |
|
338
0376cffa29e6
nginx-0.0.3-2004-05-20-21:33:52 import
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parents:
307
diff
changeset
|
1387 |
| 501 | 1388 if (ngx_array_init(&mcf->charsets, cf->pool, 2, sizeof(ngx_http_charset_t)) |
| 529 | 1389 == NGX_ERROR) |
| 501 | 1390 { |
| 1391 return NGX_CONF_ERROR; | |
| 1392 } | |
|
339
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parents:
338
diff
changeset
|
1393 |
| 529 | 1394 if (ngx_array_init(&mcf->tables, cf->pool, 1, |
| 501 | 1395 sizeof(ngx_http_charset_tables_t)) == NGX_ERROR) |
| 1396 { | |
| 1397 return NGX_CONF_ERROR; | |
| 1398 } | |
|
338
0376cffa29e6
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parents:
307
diff
changeset
|
1399 |
| 529 | 1400 if (ngx_array_init(&mcf->recodes, cf->pool, 2, |
| 1401 sizeof(ngx_http_charset_recode_t)) == NGX_ERROR) | |
| 1402 { | |
| 1403 return NGX_CONF_ERROR; | |
| 1404 } | |
| 1405 | |
|
338
0376cffa29e6
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parents:
307
diff
changeset
|
1406 return mcf; |
|
0376cffa29e6
nginx-0.0.3-2004-05-20-21:33:52 import
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parents:
307
diff
changeset
|
1407 } |
|
0376cffa29e6
nginx-0.0.3-2004-05-20-21:33:52 import
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parents:
307
diff
changeset
|
1408 |
|
0376cffa29e6
nginx-0.0.3-2004-05-20-21:33:52 import
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parents:
307
diff
changeset
|
1409 |
| 501 | 1410 static void * |
| 1411 ngx_http_charset_create_loc_conf(ngx_conf_t *cf) | |
|
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
1412 { |
|
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
1413 ngx_http_charset_loc_conf_t *lcf; |
|
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
1414 |
| 501 | 1415 lcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_charset_loc_conf_t)); |
| 1416 if (lcf == NULL) { | |
|
339
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
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1417 return NGX_CONF_ERROR; |
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1418 } |
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1419 |
| 529 | 1420 lcf->charset = NGX_CONF_UNSET; |
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1421 lcf->source_charset = NGX_CONF_UNSET; |
| 635 | 1422 lcf->override_charset = NGX_CONF_UNSET; |
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99
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1423 |
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1424 return lcf; |
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1425 } |
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1426 |
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1427 |
| 501 | 1428 static char * |
| 1429 ngx_http_charset_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
|
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1430 { |
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1431 ngx_http_charset_loc_conf_t *prev = parent; |
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1432 ngx_http_charset_loc_conf_t *conf = child; |
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1433 |
| 529 | 1434 ngx_uint_t i; |
| 1435 ngx_http_charset_recode_t *recode; | |
| 1436 ngx_http_charset_main_conf_t *mcf; | |
| 477 | 1437 |
| 635 | 1438 ngx_conf_merge_value(conf->override_charset, prev->override_charset, 0); |
| 529 | 1439 ngx_conf_merge_value(conf->charset, prev->charset, NGX_HTTP_NO_CHARSET); |
| 477 | 1440 |
|
339
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1441 if (conf->source_charset == NGX_CONF_UNSET) { |
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1442 conf->source_charset = prev->source_charset; |
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1443 } |
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99
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1444 |
| 529 | 1445 if (conf->charset == NGX_HTTP_NO_CHARSET |
| 1446 || conf->source_charset == NGX_CONF_UNSET | |
| 1447 || conf->charset == conf->source_charset) | |
| 477 | 1448 { |
| 529 | 1449 return NGX_CONF_OK; |
| 477 | 1450 } |
| 1451 | |
| 529 | 1452 mcf = ngx_http_conf_get_module_main_conf(cf, |
| 1453 ngx_http_charset_filter_module); | |
| 1454 recode = mcf->recodes.elts; | |
| 1455 for (i = 0; i < mcf->recodes.nelts; i++) { | |
| 1456 if (conf->source_charset == recode[i].src | |
| 1457 && conf->charset == recode[i].dst) | |
| 1458 { | |
| 1459 return NGX_CONF_OK; | |
| 1460 } | |
| 477 | 1461 } |
| 1462 | |
| 529 | 1463 recode = ngx_array_push(&mcf->recodes); |
| 1464 if (recode == NULL) { | |
| 477 | 1465 return NGX_CONF_ERROR; |
| 1466 } | |
|
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1467 |
| 529 | 1468 recode->src = conf->source_charset; |
| 1469 recode->dst = conf->charset; | |
| 1470 | |
|
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1471 return NGX_CONF_OK; |
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1472 } |
| 529 | 1473 |
| 1474 | |
| 1475 static ngx_int_t | |
| 1476 ngx_http_charset_postconfiguration(ngx_conf_t *cf) | |
| 1477 { | |
| 635 | 1478 u_char **src, **dst; |
| 529 | 1479 ngx_int_t c; |
| 1480 ngx_uint_t i, t; | |
| 1481 ngx_http_charset_t *charset; | |
| 1482 ngx_http_charset_recode_t *recode; | |
| 1483 ngx_http_charset_tables_t *tables; | |
| 1484 ngx_http_charset_main_conf_t *mcf; | |
| 1485 | |
| 1486 mcf = ngx_http_conf_get_module_main_conf(cf, | |
| 1487 ngx_http_charset_filter_module); | |
| 1488 | |
| 1489 recode = mcf->recodes.elts; | |
| 1490 tables = mcf->tables.elts; | |
| 1491 charset = mcf->charsets.elts; | |
| 1492 | |
| 1493 for (i = 0; i < mcf->recodes.nelts; i++) { | |
| 1494 | |
| 1495 c = recode[i].src; | |
| 1496 | |
| 1497 for (t = 0; t < mcf->tables.nelts; t++) { | |
| 1498 | |
| 1499 if (c == tables[t].src && recode[i].dst == tables[t].dst) { | |
| 1500 goto next; | |
| 1501 } | |
| 1502 | |
| 1503 if (c == tables[t].dst && recode[i].dst == tables[t].src) { | |
| 1504 goto next; | |
| 1505 } | |
| 1506 } | |
| 1507 | |
| 1508 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 1509 " no \"charset_map\" between the charsets " | |
| 1510 "\"%V\" and \"%V\"", | |
| 1511 &charset[c].name, &charset[recode[i].dst].name); | |
| 1512 return NGX_ERROR; | |
| 1513 | |
| 1514 next: | |
| 1515 continue; | |
| 1516 } | |
| 1517 | |
| 635 | 1518 |
| 1519 for (t = 0; t < mcf->tables.nelts; t++) { | |
| 1520 | |
| 1521 src = charset[tables[t].src].tables; | |
| 1522 | |
| 1523 if (src == NULL) { | |
| 1524 src = ngx_pcalloc(cf->pool, sizeof(u_char *) * mcf->charsets.nelts); | |
| 1525 if (src == NULL) { | |
| 1526 return NGX_ERROR; | |
| 1527 } | |
| 1528 | |
| 1529 charset[tables[t].src].tables = src; | |
| 1530 } | |
| 1531 | |
| 1532 dst = charset[tables[t].dst].tables; | |
| 1533 | |
| 1534 if (dst == NULL) { | |
| 1535 dst = ngx_pcalloc(cf->pool, sizeof(u_char *) * mcf->charsets.nelts); | |
| 1536 if (dst == NULL) { | |
| 1537 return NGX_ERROR; | |
| 1538 } | |
| 1539 | |
| 1540 charset[tables[t].dst].tables = dst; | |
| 1541 } | |
| 1542 | |
| 1543 src[tables[t].dst] = tables[t].src2dst; | |
| 1544 dst[tables[t].src] = tables[t].dst2src; | |
| 1545 } | |
| 1546 | |
| 681 | 1547 ngx_http_next_header_filter = ngx_http_top_header_filter; |
| 1548 ngx_http_top_header_filter = ngx_http_charset_header_filter; | |
| 1549 | |
| 1550 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
| 1551 ngx_http_top_body_filter = ngx_http_charset_body_filter; | |
| 1552 | |
| 529 | 1553 return NGX_OK; |
| 1554 } |