Mercurial > hg > nginx
annotate src/http/modules/ngx_http_charset_filter_module.c @ 1107:db7c468c447d
ngx_strcasecmp()/ngx_strncasecmp()
| author | Igor Sysoev <igor@sysoev.ru> |
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| date | Wed, 14 Feb 2007 18:51:19 +0000 |
| parents | 36f7b549f481 |
| children | 33d6c994a0b2 |
| rev | line source |
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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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| 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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105 |
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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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149 |
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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 | |
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242 if (ngx_strncasecmp(ct, (u_char *) "text/", 5) != 0 |
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243 && ngx_strncasecmp(ct, |
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244 (u_char *) "application/x-javascript", 24) |
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245 != 0) |
| 657 | 246 { |
| 247 return ngx_http_next_header_filter(r); | |
| 248 } | |
| 249 } | |
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250 |
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251 if (charset >= NGX_HTTP_CHARSET_VAR) { |
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252 vv = ngx_http_get_indexed_variable(r, |
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253 charset - NGX_HTTP_CHARSET_VAR); |
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254 |
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255 if (vv == NULL || vv->not_found) { |
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256 return NGX_ERROR; |
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257 } |
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258 |
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259 charset = ngx_http_charset_get_charset(charsets, n, |
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260 (ngx_str_t *) vv); |
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261 } |
| 653 | 262 } |
| 263 | |
| 264 } else { | |
| 657 | 265 ctx = ngx_http_get_module_ctx(r->main, ngx_http_charset_filter_module); |
| 266 | |
| 267 if (ctx == NULL) { | |
| 268 | |
| 269 mc = &r->main->headers_out.charset; | |
| 270 | |
| 271 if (mc->len == 0) { | |
| 272 return ngx_http_next_header_filter(r); | |
| 273 } | |
| 274 | |
| 275 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_charset_ctx_t)); | |
| 276 if (ctx == NULL) { | |
| 277 return NGX_ERROR; | |
| 278 } | |
| 279 | |
| 280 ngx_http_set_ctx(r->main, ctx, ngx_http_charset_filter_module); | |
| 653 | 281 |
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282 charset = ngx_http_charset_get_charset(charsets, n, mc); |
| 657 | 283 |
| 284 ctx->charset = charset; | |
| 285 | |
| 661 | 286 } else { |
| 287 charset = ctx->charset; | |
| 653 | 288 } |
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289 } |
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290 |
| 657 | 291 /* source charset */ |
| 635 | 292 |
| 657 | 293 if (r->headers_out.charset.len == 0) { |
| 294 lcf = ngx_http_get_module_loc_conf(r, ngx_http_charset_filter_module); | |
| 635 | 295 |
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296 source_charset = lcf->source_charset; |
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297 |
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298 if (source_charset >= NGX_HTTP_CHARSET_VAR) { |
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299 vv = ngx_http_get_indexed_variable(r, |
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300 source_charset - NGX_HTTP_CHARSET_VAR); |
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301 |
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302 if (vv == NULL || vv->not_found) { |
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303 return NGX_ERROR; |
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304 } |
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305 |
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306 source_charset = ngx_http_charset_get_charset(charsets, n, |
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307 (ngx_str_t *) vv); |
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308 } |
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309 |
| 661 | 310 if (charset != NGX_HTTP_NO_CHARSET) { |
| 311 return ngx_http_charset_set_charset(r, mcf->charsets.elts, charset, | |
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312 source_charset); |
| 661 | 313 } |
| 314 | |
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315 if (source_charset == NGX_CONF_UNSET) { |
| 661 | 316 return ngx_http_next_header_filter(r); |
| 317 } | |
| 318 | |
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319 from = &charsets[source_charset].name; |
| 663 | 320 to = &r->main->headers_out.charset; |
| 661 | 321 |
| 663 | 322 goto no_charset_map; |
| 657 | 323 } |
| 635 | 324 |
| 657 | 325 source_charset = ngx_http_charset_get_charset(charsets, n, |
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326 &r->headers_out.charset); |
| 635 | 327 |
| 661 | 328 if (charset == NGX_HTTP_NO_CHARSET |
| 329 || source_charset == NGX_HTTP_NO_CHARSET) | |
| 330 { | |
| 331 if (charset != source_charset | |
| 332 || ngx_strcasecmp(r->main->headers_out.charset.data, | |
| 333 r->headers_out.charset.data) | |
| 334 != 0) | |
| 335 { | |
| 663 | 336 from = &r->headers_out.charset; |
| 337 to = (charset == NGX_HTTP_NO_CHARSET) ? | |
| 338 &r->main->headers_out.charset: | |
| 339 &charsets[charset].name; | |
| 340 | |
| 341 goto no_charset_map; | |
| 661 | 342 } |
| 635 | 343 |
| 657 | 344 return ngx_http_next_header_filter(r); |
| 345 } | |
| 635 | 346 |
| 657 | 347 if (source_charset != charset |
| 348 && (charsets[source_charset].tables == NULL | |
| 349 || charsets[source_charset].tables[charset] == NULL)) | |
| 350 { | |
| 663 | 351 from = &charsets[source_charset].name; |
| 352 to = &charsets[charset].name; | |
| 635 | 353 |
| 663 | 354 goto no_charset_map; |
|
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355 } |
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356 |
| 657 | 357 r->headers_out.content_type.len = r->headers_out.content_type_len; |
| 358 | |
| 359 return ngx_http_charset_set_charset(r, mcf->charsets.elts, charset, | |
| 360 source_charset); | |
| 663 | 361 |
| 362 no_charset_map: | |
| 363 | |
| 364 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 365 "no \"charset_map\" between the charsets " | |
| 366 "\"%V\" and \"%V\"", from, to); | |
| 367 | |
| 368 return ngx_http_next_header_filter(r); | |
| 657 | 369 } |
| 370 | |
| 371 | |
| 372 static ngx_int_t | |
| 373 ngx_http_charset_get_charset(ngx_http_charset_t *charsets, ngx_uint_t n, | |
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374 ngx_str_t *charset) |
| 657 | 375 { |
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376 size_t len; |
| 657 | 377 ngx_uint_t i; |
| 378 | |
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379 len = charset->len & 0xffff; |
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380 |
| 657 | 381 for (i = 0; i < n; i++) { |
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382 if (charsets[i].name.len != len) { |
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383 continue; |
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384 } |
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385 |
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386 if (ngx_strncasecmp(charsets[i].name.data, charset->data, len) == 0) { |
| 657 | 387 return i; |
| 388 } | |
| 389 } | |
| 390 | |
| 391 return NGX_HTTP_NO_CHARSET; | |
| 392 } | |
| 393 | |
| 394 | |
| 395 static ngx_int_t | |
| 396 ngx_http_charset_set_charset(ngx_http_request_t *r, | |
| 397 ngx_http_charset_t *charsets, ngx_int_t charset, ngx_int_t source_charset) | |
| 398 { | |
| 399 ngx_http_charset_ctx_t *ctx; | |
| 400 | |
|
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401 if (r->headers_out.status == NGX_HTTP_MOVED_PERMANENTLY |
| 501 | 402 || r->headers_out.status == NGX_HTTP_MOVED_TEMPORARILY) |
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403 { |
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404 /* |
| 635 | 405 * do not set charset for the redirect because NN 4.x |
| 406 * use this charset instead of the next page charset | |
|
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407 */ |
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408 |
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409 r->headers_out.charset.len = 0; |
| 657 | 410 |
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411 return ngx_http_next_header_filter(r); |
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412 } |
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413 |
| 635 | 414 r->headers_out.charset = charsets[charset].name; |
| 415 r->utf8 = charsets[charset].utf8; | |
| 416 | |
| 417 if (source_charset == NGX_CONF_UNSET || source_charset == charset) { | |
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418 return ngx_http_next_header_filter(r); |
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419 } |
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420 |
| 501 | 421 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_charset_ctx_t)); |
| 422 if (ctx == NULL) { | |
| 423 return NGX_ERROR; | |
| 424 } | |
| 425 | |
| 426 ngx_http_set_ctx(r, ctx, ngx_http_charset_filter_module); | |
| 427 | |
| 635 | 428 ctx->table = charsets[source_charset].tables[charset]; |
| 429 ctx->charset = charset; | |
| 657 | 430 ctx->length = charsets[charset].length; |
| 431 ctx->from_utf8 = charsets[source_charset].utf8; | |
| 432 ctx->to_utf8 = charsets[charset].utf8; | |
| 433 | |
| 663 | 434 r->filter_need_in_memory = 1; |
| 435 | |
| 657 | 436 if ((ctx->to_utf8 || ctx->from_utf8) && r == r->main) { |
| 437 ngx_http_clear_content_length(r); | |
| 663 | 438 |
| 439 } else { | |
| 440 r->filter_need_temporary = 1; | |
| 657 | 441 } |
|
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442 |
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443 return ngx_http_next_header_filter(r); |
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|
444 } |
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parents:
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changeset
|
445 |
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446 |
| 501 | 447 static ngx_int_t |
| 448 ngx_http_charset_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
|
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449 { |
| 657 | 450 ngx_int_t rc; |
| 451 ngx_buf_t *b; | |
| 452 ngx_chain_t *cl, *out, **ll; | |
| 635 | 453 ngx_http_charset_ctx_t *ctx; |
|
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454 |
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455 ctx = ngx_http_get_module_ctx(r, ngx_http_charset_filter_module); |
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456 |
| 635 | 457 if (ctx == NULL || ctx->table == NULL) { |
|
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458 return ngx_http_next_body_filter(r, in); |
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459 } |
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460 |
| 657 | 461 if ((ctx->to_utf8 || ctx->from_utf8) || ctx->busy) { |
| 462 | |
| 463 out = NULL; | |
| 464 ll = &out; | |
| 465 | |
| 466 for (cl = in; cl; cl = cl->next) { | |
| 467 b = cl->buf; | |
| 468 | |
| 469 if (ngx_buf_size(b) == 0) { | |
| 665 | 470 |
| 471 *ll = ngx_alloc_chain_link(r->pool); | |
| 472 if (*ll == NULL) { | |
| 473 return NGX_ERROR; | |
| 474 } | |
| 475 | |
| 476 (*ll)->buf = b; | |
| 477 (*ll)->next = NULL; | |
| 478 | |
| 479 ll = &(*ll)->next; | |
| 480 | |
| 657 | 481 continue; |
| 482 } | |
| 483 | |
| 484 if (ctx->to_utf8) { | |
| 485 *ll = ngx_http_charset_recode_to_utf8(r->pool, b, ctx); | |
| 486 | |
| 487 } else { | |
| 488 *ll = ngx_http_charset_recode_from_utf8(r->pool, b, ctx); | |
| 489 } | |
| 490 | |
| 491 if (*ll == NULL) { | |
| 492 return NGX_ERROR; | |
| 493 } | |
| 494 | |
| 495 while (*ll) { | |
| 496 ll = &(*ll)->next; | |
| 497 } | |
| 498 } | |
| 499 | |
| 500 rc = ngx_http_next_body_filter(r, out); | |
| 501 | |
| 502 if (out) { | |
| 503 if (ctx->busy == NULL) { | |
| 504 ctx->busy = out; | |
| 505 | |
| 506 } else { | |
| 507 for (cl = ctx->busy; cl->next; cl = cl->next) { /* void */ } | |
| 508 cl->next = out; | |
| 509 } | |
| 510 } | |
| 511 | |
| 512 while (ctx->busy) { | |
| 513 | |
| 514 cl = ctx->busy; | |
| 515 b = cl->buf; | |
| 516 | |
| 517 if (ngx_buf_size(b) != 0) { | |
| 518 break; | |
| 519 } | |
| 520 | |
| 521 #if (NGX_HAVE_WRITE_ZEROCOPY) | |
| 522 if (b->zerocopy_busy) { | |
| 523 break; | |
| 524 } | |
| 525 #endif | |
| 526 | |
| 527 ctx->busy = cl->next; | |
| 528 | |
| 529 if (b->tag != (ngx_buf_tag_t) &ngx_http_charset_filter_module) { | |
| 530 continue; | |
| 531 } | |
| 532 | |
| 533 if (b->shadow) { | |
| 534 b->shadow->pos = b->shadow->last; | |
| 535 } | |
| 536 | |
| 537 if (b->pos) { | |
| 538 cl->next = ctx->free_buffers; | |
| 539 ctx->free_buffers = cl; | |
| 540 continue; | |
| 541 } | |
| 542 | |
| 543 cl->next = ctx->free_bufs; | |
| 544 ctx->free_bufs = cl; | |
| 545 } | |
| 546 | |
| 547 return rc; | |
| 548 } | |
| 549 | |
|
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550 for (cl = in; cl; cl = cl->next) { |
| 635 | 551 (void) ngx_http_charset_recode(cl->buf, ctx->table); |
|
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552 } |
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553 |
|
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554 return ngx_http_next_body_filter(r, in); |
|
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|
555 } |
|
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556 |
|
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557 |
| 501 | 558 static ngx_uint_t |
| 635 | 559 ngx_http_charset_recode(ngx_buf_t *b, u_char *table) |
|
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560 { |
| 635 | 561 u_char *p; |
|
339
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562 |
|
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563 for (p = b->pos; p < b->last; p++) { |
| 635 | 564 |
| 565 if (*p == table[*p]) { | |
| 566 continue; | |
| 455 | 567 } |
| 568 | |
| 569 while (p < b->last) { | |
| 570 *p = table[*p]; | |
| 571 p++; | |
| 572 } | |
| 573 | |
| 574 b->in_file = 0; | |
| 635 | 575 |
| 576 return 1; | |
| 455 | 577 } |
| 578 | |
| 635 | 579 return 0; |
|
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580 } |
|
99
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parents:
diff
changeset
|
581 |
|
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parents:
diff
changeset
|
582 |
| 657 | 583 static ngx_chain_t * |
| 584 ngx_http_charset_recode_from_utf8(ngx_pool_t *pool, ngx_buf_t *buf, | |
| 585 ngx_http_charset_ctx_t *ctx) | |
| 586 { | |
| 587 size_t len, size; | |
| 588 u_char c, *p, *src, *dst, *saved, **table; | |
| 589 uint32_t n; | |
| 590 ngx_buf_t *b; | |
| 591 ngx_uint_t i; | |
| 592 ngx_chain_t *out, *cl, **ll; | |
| 593 | |
| 594 src = buf->pos; | |
| 595 | |
| 596 if (ctx->saved_len == 0) { | |
| 597 | |
| 598 for ( /* void */ ; src < buf->last; src++) { | |
| 599 | |
| 600 if (*src < 0x80) { | |
| 601 continue; | |
| 602 } | |
| 603 | |
| 604 len = src - buf->pos; | |
| 605 | |
| 606 if (len > 512) { | |
| 607 out = ngx_http_charset_get_buf(pool, ctx); | |
| 608 if (out == NULL) { | |
| 609 return NULL; | |
| 610 } | |
| 611 | |
| 612 b = out->buf; | |
| 613 | |
| 614 b->temporary = buf->temporary; | |
| 615 b->memory = buf->memory; | |
| 616 b->mmap = buf->mmap; | |
| 617 b->flush = buf->flush; | |
| 618 | |
| 619 b->pos = buf->pos; | |
| 620 b->last = src; | |
| 621 | |
| 622 out->buf = b; | |
| 623 out->next = NULL; | |
| 624 | |
| 625 size = buf->last - src; | |
| 626 | |
| 627 saved = src; | |
| 628 n = ngx_utf_decode(&saved, size); | |
| 629 | |
| 630 if (n == 0xfffffffe) { | |
| 631 /* incomplete UTF-8 symbol */ | |
| 632 | |
| 633 ngx_memcpy(ctx->saved, src, size); | |
| 634 ctx->saved_len = size; | |
| 635 | |
| 636 b->shadow = buf; | |
| 637 | |
| 638 return out; | |
| 639 } | |
| 640 | |
| 641 } else { | |
| 642 out = NULL; | |
| 643 size = len + buf->last - src; | |
| 644 src = buf->pos; | |
| 645 } | |
| 646 | |
| 647 if (size < NGX_HTML_ENTITY_LEN) { | |
| 648 size += NGX_HTML_ENTITY_LEN; | |
| 649 } | |
| 650 | |
| 651 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 652 if (cl == NULL) { | |
| 653 return NULL; | |
| 654 } | |
| 655 | |
| 656 if (out) { | |
| 657 out->next = cl; | |
| 658 | |
| 659 } else { | |
| 660 out = cl; | |
| 661 } | |
| 662 | |
| 663 b = cl->buf; | |
| 664 dst = b->pos; | |
| 665 | |
| 666 goto recode; | |
| 667 } | |
| 668 | |
| 669 out = ngx_alloc_chain_link(pool); | |
| 670 if (out == NULL) { | |
| 671 return NULL; | |
| 672 } | |
| 673 | |
| 674 out->buf = buf; | |
| 675 out->next = NULL; | |
| 676 | |
| 677 return out; | |
| 678 } | |
| 679 | |
| 680 /* process incomplete UTF sequence from previous buffer */ | |
| 681 | |
| 682 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pool->log, 0, | |
| 683 "http charset utf saved: %z", ctx->saved_len); | |
| 684 | |
| 685 p = src; | |
| 686 | |
| 687 for (i = ctx->saved_len; i < NGX_UTF_LEN; i++) { | |
| 688 ctx->saved[i] = *p++; | |
| 689 | |
| 690 if (p == buf->last) { | |
| 691 break; | |
| 692 } | |
| 693 } | |
| 694 | |
| 695 saved = ctx->saved; | |
| 696 n = ngx_utf_decode(&saved, i); | |
| 697 | |
| 698 c = '\0'; | |
| 699 | |
| 700 if (n < 0x10000) { | |
| 701 table = (u_char **) ctx->table; | |
| 702 p = table[n >> 8]; | |
| 703 | |
| 704 if (p) { | |
| 705 c = p[n & 0xff]; | |
| 706 } | |
| 707 | |
| 708 } else if (n == 0xfffffffe) { | |
| 709 | |
| 710 /* incomplete UTF-8 symbol */ | |
| 711 | |
| 712 if (i < NGX_UTF_LEN) { | |
| 713 out = ngx_http_charset_get_buf(pool, ctx); | |
| 714 if (out == NULL) { | |
| 715 return NULL; | |
| 716 } | |
| 717 | |
| 718 b = out->buf; | |
| 719 | |
| 720 b->pos = buf->pos; | |
| 721 b->last = buf->last; | |
| 722 b->sync = 1; | |
| 723 b->shadow = buf; | |
| 724 | |
| 725 ngx_memcpy(&ctx->saved[ctx->saved_len], src, i); | |
| 726 ctx->saved_len += i; | |
| 727 | |
| 728 return out; | |
| 729 } | |
| 730 } | |
| 731 | |
| 732 size = buf->last - buf->pos; | |
| 733 | |
| 734 if (size < NGX_HTML_ENTITY_LEN) { | |
| 735 size += NGX_HTML_ENTITY_LEN; | |
| 736 } | |
| 737 | |
| 738 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 739 if (cl == NULL) { | |
| 740 return NULL; | |
| 741 } | |
| 742 | |
| 743 out = cl; | |
| 744 | |
| 745 b = cl->buf; | |
| 746 dst = b->pos; | |
| 747 | |
| 748 if (c) { | |
| 749 *dst++ = c; | |
| 750 | |
| 751 } else if (n == 0xfffffffe) { | |
| 752 *dst++ = '?'; | |
| 753 | |
| 754 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pool->log, 0, | |
| 755 "http charset invalid utf 0"); | |
| 756 | |
| 757 saved = &ctx->saved[NGX_UTF_LEN]; | |
| 758 | |
| 759 } else if (n > 0x10ffff) { | |
| 760 *dst++ = '?'; | |
| 761 | |
| 762 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pool->log, 0, | |
| 763 "http charset invalid utf 1"); | |
| 764 | |
| 765 } else { | |
| 766 dst = ngx_sprintf(dst, "&#%uD;", n); | |
| 767 } | |
| 768 | |
| 769 src += (saved - ctx->saved) - ctx->saved_len; | |
| 770 ctx->saved_len = 0; | |
| 771 | |
| 772 recode: | |
| 773 | |
| 774 ll = &cl->next; | |
| 775 | |
| 776 table = (u_char **) ctx->table; | |
| 777 | |
| 778 while (src < buf->last) { | |
| 779 | |
| 780 if ((size_t) (b->end - dst) < NGX_HTML_ENTITY_LEN) { | |
| 781 b->last = dst; | |
| 782 | |
| 783 size = buf->last - src + NGX_HTML_ENTITY_LEN; | |
| 784 | |
| 785 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 786 if (cl == NULL) { | |
| 787 return NULL; | |
| 788 } | |
| 789 | |
| 790 *ll = cl; | |
| 791 ll = &cl->next; | |
| 792 | |
| 793 b = cl->buf; | |
| 794 dst = b->pos; | |
| 795 } | |
| 796 | |
| 797 if (*src < 0x80) { | |
| 798 *dst++ = *src++; | |
| 799 continue; | |
| 800 } | |
| 801 | |
| 802 len = buf->last - src; | |
| 803 | |
| 804 n = ngx_utf_decode(&src, len); | |
| 805 | |
| 806 if (n < 0x10000) { | |
| 807 | |
| 808 p = table[n >> 8]; | |
| 809 | |
| 810 if (p) { | |
| 811 c = p[n & 0xff]; | |
| 812 | |
| 813 if (c) { | |
| 814 *dst++ = c; | |
| 815 continue; | |
| 816 } | |
| 817 } | |
| 818 | |
| 819 dst = ngx_sprintf(dst, "&#%uD;", n); | |
| 820 | |
| 821 continue; | |
| 822 } | |
| 823 | |
| 824 if (n == 0xfffffffe) { | |
| 825 /* incomplete UTF-8 symbol */ | |
| 826 | |
| 827 ngx_memcpy(ctx->saved, src, len); | |
| 828 ctx->saved_len = len; | |
| 829 | |
| 830 if (b->pos == dst) { | |
| 831 b->sync = 1; | |
| 832 b->temporary = 0; | |
| 833 } | |
| 834 | |
| 835 break; | |
| 836 } | |
| 837 | |
| 838 if (n > 0x10ffff) { | |
| 839 *dst++ = '?'; | |
| 840 | |
| 841 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pool->log, 0, | |
| 842 "http charset invalid utf 2"); | |
| 843 | |
| 844 continue; | |
| 845 } | |
| 846 | |
| 847 /* n > 0xffff */ | |
| 848 | |
| 849 dst = ngx_sprintf(dst, "&#%uD;", n); | |
| 850 } | |
| 851 | |
| 852 b->last = dst; | |
| 853 | |
| 854 b->last_buf = buf->last_buf; | |
| 855 b->last_in_chain = buf->last_in_chain; | |
| 856 b->flush = buf->flush; | |
| 857 | |
| 858 b->shadow = buf; | |
| 859 | |
| 860 return out; | |
| 861 } | |
| 862 | |
| 863 | |
| 864 static ngx_chain_t * | |
| 865 ngx_http_charset_recode_to_utf8(ngx_pool_t *pool, ngx_buf_t *buf, | |
| 866 ngx_http_charset_ctx_t *ctx) | |
| 867 { | |
| 868 size_t len, size; | |
| 869 u_char *p, *src, *dst, *table; | |
| 870 ngx_buf_t *b; | |
| 871 ngx_chain_t *out, *cl, **ll; | |
| 872 | |
| 873 table = ctx->table; | |
| 874 | |
| 875 for (src = buf->pos; src < buf->last; src++) { | |
| 876 if (table[*src * NGX_UTF_LEN] == '\1') { | |
| 877 continue; | |
| 878 } | |
| 879 | |
| 880 goto recode; | |
| 881 } | |
| 882 | |
| 883 out = ngx_alloc_chain_link(pool); | |
| 884 if (out == NULL) { | |
| 885 return NULL; | |
| 886 } | |
| 887 | |
| 888 out->buf = buf; | |
| 889 out->next = NULL; | |
| 890 | |
| 891 return out; | |
| 892 | |
| 893 recode: | |
| 894 | |
| 895 /* | |
| 896 * we assume that there are about half of characters to be recoded, | |
| 897 * so we preallocate "size / 2 + size / 2 * ctx->length" | |
| 898 */ | |
| 899 | |
| 900 len = src - buf->pos; | |
| 901 | |
| 902 if (len > 512) { | |
| 903 out = ngx_http_charset_get_buf(pool, ctx); | |
| 904 if (out == NULL) { | |
| 905 return NULL; | |
| 906 } | |
| 907 | |
| 908 b = out->buf; | |
| 909 | |
| 910 b->temporary = buf->temporary; | |
| 911 b->memory = buf->memory; | |
| 912 b->mmap = buf->mmap; | |
| 913 b->flush = buf->flush; | |
| 914 | |
| 915 b->pos = buf->pos; | |
| 916 b->last = src; | |
| 917 | |
| 918 out->buf = b; | |
| 919 out->next = NULL; | |
| 920 | |
| 921 size = buf->last - src; | |
| 922 size = size / 2 + size / 2 * ctx->length; | |
| 923 | |
| 924 } else { | |
| 925 out = NULL; | |
| 926 | |
| 927 size = buf->last - src; | |
| 928 size = len + size / 2 + size / 2 * ctx->length; | |
| 929 | |
| 930 src = buf->pos; | |
| 931 } | |
| 932 | |
| 933 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 934 if (cl == NULL) { | |
| 935 return NULL; | |
| 936 } | |
| 937 | |
| 938 if (out) { | |
| 939 out->next = cl; | |
| 940 | |
| 941 } else { | |
| 942 out = cl; | |
| 943 } | |
| 944 | |
| 945 ll = &cl->next; | |
| 946 | |
| 947 b = cl->buf; | |
| 948 dst = b->pos; | |
| 949 | |
| 950 while (src < buf->last) { | |
| 951 | |
| 952 p = &table[*src++ * NGX_UTF_LEN]; | |
| 953 len = *p++; | |
| 954 | |
| 955 if ((size_t) (b->end - dst) < len) { | |
| 956 b->last = dst; | |
| 957 | |
| 958 size = buf->last - src; | |
| 959 size = len + size / 2 + size / 2 * ctx->length; | |
| 960 | |
| 961 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 962 if (cl == NULL) { | |
| 963 return NULL; | |
| 964 } | |
| 965 | |
| 966 *ll = cl; | |
| 967 ll = &cl->next; | |
| 968 | |
| 969 b = cl->buf; | |
| 970 dst = b->pos; | |
| 971 } | |
| 972 | |
| 973 while (len) { | |
| 974 *dst++ = *p++; | |
| 975 len--; | |
| 976 } | |
| 977 } | |
| 978 | |
| 979 b->last = dst; | |
| 980 | |
| 981 b->last_buf = buf->last_buf; | |
| 982 b->last_in_chain = buf->last_in_chain; | |
| 983 b->flush = buf->flush; | |
| 984 | |
| 985 b->shadow = buf; | |
| 986 | |
| 987 return out; | |
| 988 } | |
| 989 | |
| 990 | |
| 991 static ngx_chain_t * | |
| 992 ngx_http_charset_get_buf(ngx_pool_t *pool, ngx_http_charset_ctx_t *ctx) | |
| 993 { | |
| 994 ngx_chain_t *cl; | |
| 995 | |
| 996 cl = ctx->free_bufs; | |
| 997 | |
| 998 if (cl) { | |
| 999 ctx->free_bufs = cl->next; | |
| 1000 | |
| 1001 cl->buf->shadow = NULL; | |
| 1002 cl->next = NULL; | |
| 1003 | |
| 1004 return cl; | |
| 1005 } | |
| 1006 | |
| 1007 cl = ngx_alloc_chain_link(pool); | |
| 1008 if (cl == NULL) { | |
| 1009 return NULL; | |
| 1010 } | |
| 1011 | |
| 1012 cl->buf = ngx_calloc_buf(pool); | |
| 1013 if (cl->buf == NULL) { | |
| 1014 return NULL; | |
| 1015 } | |
| 1016 | |
| 1017 cl->next = NULL; | |
| 1018 | |
| 1019 cl->buf->tag = (ngx_buf_tag_t) &ngx_http_charset_filter_module; | |
| 1020 | |
| 1021 return cl; | |
| 1022 } | |
| 1023 | |
| 1024 | |
| 1025 static ngx_chain_t * | |
| 1026 ngx_http_charset_get_buffer(ngx_pool_t *pool, ngx_http_charset_ctx_t *ctx, | |
| 1027 size_t size) | |
| 1028 { | |
| 1029 ngx_buf_t *b; | |
| 1030 ngx_chain_t *cl, **ll; | |
| 1031 | |
| 1032 for (ll = &ctx->free_buffers, cl = ctx->free_buffers; | |
| 1033 cl; | |
| 1034 ll = &cl->next, cl = cl->next) | |
| 1035 { | |
| 1036 b = cl->buf; | |
| 1037 | |
| 1038 if ((size_t) (b->end - b->start) >= size) { | |
| 1039 *ll = cl->next; | |
| 1040 cl->next = NULL; | |
| 1041 | |
| 1042 b->pos = b->start; | |
| 1043 b->temporary = 1; | |
| 1044 b->shadow = NULL; | |
| 1045 | |
| 1046 return cl; | |
| 1047 } | |
| 1048 } | |
| 1049 | |
| 1050 cl = ngx_alloc_chain_link(pool); | |
| 1051 if (cl == NULL) { | |
| 1052 return NULL; | |
| 1053 } | |
| 1054 | |
| 1055 cl->buf = ngx_create_temp_buf(pool, size); | |
| 1056 if (cl->buf == NULL) { | |
| 1057 return NULL; | |
| 1058 } | |
| 1059 | |
| 1060 cl->next = NULL; | |
| 1061 | |
| 1062 cl->buf->temporary = 1; | |
| 1063 cl->buf->tag = (ngx_buf_tag_t) &ngx_http_charset_filter_module; | |
| 1064 | |
| 1065 return cl; | |
| 1066 } | |
| 1067 | |
| 1068 | |
| 501 | 1069 static char * |
| 657 | 1070 ngx_http_charset_map_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
|
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1071 { |
|
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1072 ngx_http_charset_main_conf_t *mcf = conf; |
|
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1073 |
| 657 | 1074 char *rv; |
| 1075 u_char *p, *dst2src, **pp; | |
| 1076 ngx_int_t src, dst; | |
| 1077 ngx_uint_t i, n; | |
| 1078 ngx_str_t *value; | |
| 1079 ngx_conf_t pvcf; | |
| 1080 ngx_http_charset_t *charset; | |
| 1081 ngx_http_charset_tables_t *table; | |
| 1082 ngx_http_charset_conf_ctx_t ctx; | |
|
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1083 |
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1084 value = cf->args->elts; |
|
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1085 |
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1086 src = ngx_http_add_charset(&mcf->charsets, &value[1]); |
|
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1087 if (src == NGX_ERROR) { |
|
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1088 return NGX_CONF_ERROR; |
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1089 } |
|
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1090 |
|
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1091 dst = ngx_http_add_charset(&mcf->charsets, &value[2]); |
|
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1092 if (dst == NGX_ERROR) { |
|
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1093 return NGX_CONF_ERROR; |
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1094 } |
|
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1095 |
|
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1096 if (src == dst) { |
|
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1097 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
|
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1098 "\"charset_map\" between the same charsets " |
| 461 | 1099 "\"%V\" and \"%V\"", &value[1], &value[2]); |
|
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1100 return NGX_CONF_ERROR; |
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1101 } |
|
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1102 |
|
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1103 table = mcf->tables.elts; |
|
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1104 for (i = 0; i < mcf->tables.nelts; i++) { |
|
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1105 if ((src == table->src && dst == table->dst) |
|
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1106 || (src == table->dst && dst == table->src)) |
|
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|
1107 { |
|
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|
1108 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
|
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|
1109 "duplicate \"charset_map\" between " |
| 461 | 1110 "\"%V\" and \"%V\"", &value[1], &value[2]); |
|
339
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1111 return NGX_CONF_ERROR; |
|
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|
1112 } |
|
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|
1113 } |
|
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|
1114 |
| 501 | 1115 table = ngx_array_push(&mcf->tables); |
| 1116 if (table == NULL) { | |
|
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1117 return NGX_CONF_ERROR; |
|
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|
1118 } |
|
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|
1119 |
|
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|
1120 table->src = src; |
|
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|
1121 table->dst = dst; |
|
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|
1122 |
|
1107
db7c468c447d
ngx_strcasecmp()/ngx_strncasecmp()
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parents:
797
diff
changeset
|
1123 if (ngx_strcasecmp(value[2].data, (u_char *) "utf-8") == 0) { |
| 657 | 1124 table->src2dst = ngx_pcalloc(cf->pool, 256 * NGX_UTF_LEN); |
| 1125 if (table->src2dst == NULL) { | |
| 1126 return NGX_CONF_ERROR; | |
| 1127 } | |
| 1128 | |
| 1129 table->dst2src = ngx_pcalloc(cf->pool, 256 * sizeof(void *)); | |
| 1130 if (table->dst2src == NULL) { | |
| 1131 return NGX_CONF_ERROR; | |
| 1132 } | |
| 1133 | |
| 1134 dst2src = ngx_pcalloc(cf->pool, 256); | |
| 1135 if (dst2src == NULL) { | |
| 1136 return NGX_CONF_ERROR; | |
| 1137 } | |
| 1138 | |
| 1139 pp = (u_char **) &table->dst2src[0]; | |
| 1140 pp[0] = dst2src; | |
| 1141 | |
| 1142 for (i = 0; i < 128; i++) { | |
| 1143 p = &table->src2dst[i * NGX_UTF_LEN]; | |
| 1144 p[0] = '\1'; | |
| 1145 p[1] = (u_char) i; | |
| 1146 dst2src[i] = (u_char) i; | |
| 1147 } | |
|
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|
1148 |
| 657 | 1149 for (/* void */; i < 256; i++) { |
| 1150 p = &table->src2dst[i * NGX_UTF_LEN]; | |
| 1151 p[0] = '\1'; | |
| 1152 p[1] = '?'; | |
| 1153 } | |
| 1154 | |
| 1155 } else { | |
| 1156 table->src2dst = ngx_palloc(cf->pool, 256); | |
| 1157 if (table->src2dst == NULL) { | |
| 1158 return NGX_CONF_ERROR; | |
| 1159 } | |
| 1160 | |
| 1161 table->dst2src = ngx_palloc(cf->pool, 256); | |
| 1162 if (table->dst2src == NULL) { | |
| 1163 return NGX_CONF_ERROR; | |
| 1164 } | |
| 1165 | |
| 1166 for (i = 0; i < 128; i++) { | |
| 1167 table->src2dst[i] = (u_char) i; | |
| 1168 table->dst2src[i] = (u_char) i; | |
| 1169 } | |
| 1170 | |
| 1171 for (/* void */; i < 256; i++) { | |
| 1172 table->src2dst[i] = '?'; | |
| 1173 table->dst2src[i] = '?'; | |
| 1174 } | |
|
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|
1175 } |
|
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|
1176 |
| 657 | 1177 charset = mcf->charsets.elts; |
|
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|
1178 |
| 657 | 1179 ctx.table = table; |
| 1180 ctx.charset = &charset[dst]; | |
| 1181 ctx.characters = 0; | |
|
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|
1182 |
|
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|
1183 pvcf = *cf; |
| 657 | 1184 cf->ctx = &ctx; |
| 1185 cf->handler = ngx_http_charset_map; | |
|
338
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|
1186 cf->handler_conf = conf; |
| 501 | 1187 |
|
338
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|
1188 rv = ngx_conf_parse(cf, NULL); |
| 501 | 1189 |
|
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|
1190 *cf = pvcf; |
|
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|
1191 |
| 657 | 1192 if (ctx.characters) { |
| 1193 n = ctx.charset->length; | |
| 1194 ctx.charset->length /= ctx.characters; | |
| 1195 | |
| 1196 if (((n * 10) / ctx.characters) % 10 > 4) { | |
| 1197 ctx.charset->length++; | |
| 1198 } | |
| 1199 } | |
| 1200 | |
|
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1201 return rv; |
|
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|
1202 } |
|
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|
1203 |
|
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|
1204 |
| 501 | 1205 static char * |
| 657 | 1206 ngx_http_charset_map(ngx_conf_t *cf, ngx_command_t *dummy, void *conf) |
|
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|
1207 { |
| 657 | 1208 u_char *p, *dst2src, **pp; |
| 1209 uint32_t n; | |
| 1210 ngx_int_t src, dst; | |
| 1211 ngx_str_t *value; | |
| 1212 ngx_uint_t i; | |
| 1213 ngx_http_charset_tables_t *table; | |
| 1214 ngx_http_charset_conf_ctx_t *ctx; | |
|
338
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|
1215 |
|
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|
1216 if (cf->args->nelts != 2) { |
|
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|
1217 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameters number"); |
|
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|
1218 return NGX_CONF_ERROR; |
|
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|
1219 } |
|
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|
1220 |
|
339
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|
1221 value = cf->args->elts; |
|
338
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|
1222 |
|
339
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|
1223 src = ngx_hextoi(value[0].data, value[0].len); |
|
338
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|
1224 if (src == NGX_ERROR || src > 255) { |
|
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|
1225 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 461 | 1226 "invalid value \"%V\"", &value[0]); |
|
339
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|
1227 return NGX_CONF_ERROR; |
|
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|
1228 } |
|
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|
1229 |
| 657 | 1230 ctx = cf->ctx; |
| 1231 table = ctx->table; | |
| 1232 | |
| 1233 if (ctx->charset->utf8) { | |
| 1234 p = &table->src2dst[src * NGX_UTF_LEN]; | |
| 1235 | |
| 1236 *p++ = (u_char) (value[1].len / 2); | |
| 1237 | |
| 1238 for (i = 0; i < value[1].len; i += 2) { | |
| 1239 dst = ngx_hextoi(&value[1].data[i], 2); | |
| 1240 if (dst == NGX_ERROR || dst > 255) { | |
| 1241 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 1242 "invalid value \"%V\"", &value[1]); | |
| 1243 return NGX_CONF_ERROR; | |
| 1244 } | |
| 1245 | |
| 1246 *p++ = (u_char) dst; | |
| 1247 } | |
| 1248 | |
| 1249 i /= 2; | |
| 1250 | |
| 1251 ctx->charset->length += i; | |
| 1252 ctx->characters++; | |
| 1253 | |
| 1254 p = &table->src2dst[src * NGX_UTF_LEN] + 1; | |
| 1255 | |
| 1256 n = ngx_utf_decode(&p, i); | |
| 1257 | |
| 1258 if (n > 0xffff) { | |
| 1259 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 1260 "invalid value \"%V\"", &value[1]); | |
| 1261 return NGX_CONF_ERROR; | |
| 1262 } | |
| 1263 | |
| 1264 pp = (u_char **) &table->dst2src[0]; | |
| 1265 | |
| 1266 dst2src = pp[n >> 8]; | |
| 1267 | |
| 1268 if (dst2src == NULL) { | |
| 1269 dst2src = ngx_pcalloc(cf->pool, 256); | |
| 1270 if (dst2src == NULL) { | |
| 1271 return NGX_CONF_ERROR; | |
| 1272 } | |
| 1273 | |
| 1274 pp[n >> 8] = dst2src; | |
| 1275 } | |
| 1276 | |
| 1277 dst2src[n & 0xff] = (u_char) src; | |
| 1278 | |
| 1279 } else { | |
| 1280 dst = ngx_hextoi(value[1].data, value[1].len); | |
| 1281 if (dst == NGX_ERROR || dst > 255) { | |
| 1282 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 1283 "invalid value \"%V\"", &value[1]); | |
| 1284 return NGX_CONF_ERROR; | |
| 1285 } | |
| 1286 | |
| 1287 table->src2dst[src] = (u_char) dst; | |
| 1288 table->dst2src[dst] = (u_char) src; | |
|
338
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|
1289 } |
|
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1290 |
|
339
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1291 return NGX_CONF_OK; |
|
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|
1292 } |
|
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|
1293 |
|
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|
1294 |
| 501 | 1295 static char * |
| 1296 ngx_http_set_charset_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
|
339
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|
1297 { |
|
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|
1298 char *p = conf; |
|
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|
1299 |
|
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|
1300 ngx_int_t *cp; |
|
752
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|
1301 ngx_str_t *value, var; |
|
339
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|
1302 ngx_http_charset_main_conf_t *mcf; |
|
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|
1303 |
|
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|
1304 cp = (ngx_int_t *) (p + cmd->offset); |
|
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|
1305 |
|
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|
1306 if (*cp != NGX_CONF_UNSET) { |
|
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|
1307 return "is duplicate"; |
|
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|
1308 } |
|
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|
1309 |
| 529 | 1310 value = cf->args->elts; |
| 1311 | |
| 1312 if (cmd->offset == offsetof(ngx_http_charset_loc_conf_t, charset) | |
| 1313 && ngx_strcmp(value[1].data, "off") == 0) | |
| 1314 { | |
| 1315 *cp = NGX_HTTP_NO_CHARSET; | |
| 1316 return NGX_CONF_OK; | |
| 1317 } | |
| 1318 | |
|
752
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parents:
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diff
changeset
|
1319 |
|
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parents:
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diff
changeset
|
1320 if (value[1].data[0] == '$') { |
|
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diff
changeset
|
1321 var.len = value[1].len - 1; |
|
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diff
changeset
|
1322 var.data = value[1].data + 1; |
|
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diff
changeset
|
1323 |
|
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diff
changeset
|
1324 *cp = ngx_http_get_variable_index(cf, &var); |
|
907361d07f25
ngx_http_charset_module supports the variables
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parents:
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diff
changeset
|
1325 |
|
907361d07f25
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parents:
681
diff
changeset
|
1326 if (*cp == NGX_ERROR) { |
|
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diff
changeset
|
1327 return NGX_CONF_ERROR; |
|
907361d07f25
ngx_http_charset_module supports the variables
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parents:
681
diff
changeset
|
1328 } |
|
907361d07f25
ngx_http_charset_module supports the variables
Igor Sysoev <igor@sysoev.ru>
parents:
681
diff
changeset
|
1329 |
|
907361d07f25
ngx_http_charset_module supports the variables
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parents:
681
diff
changeset
|
1330 *cp += NGX_HTTP_CHARSET_VAR; |
|
907361d07f25
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parents:
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diff
changeset
|
1331 |
|
907361d07f25
ngx_http_charset_module supports the variables
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parents:
681
diff
changeset
|
1332 return NGX_CONF_OK; |
|
907361d07f25
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parents:
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diff
changeset
|
1333 } |
|
907361d07f25
ngx_http_charset_module supports the variables
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parents:
681
diff
changeset
|
1334 |
|
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
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parents:
389
diff
changeset
|
1335 mcf = ngx_http_conf_get_module_main_conf(cf, |
|
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
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parents:
389
diff
changeset
|
1336 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
|
1337 |
|
339
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|
1338 *cp = ngx_http_add_charset(&mcf->charsets, &value[1]); |
|
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|
1339 if (*cp == NGX_ERROR) { |
|
338
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diff
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|
1340 return NGX_CONF_ERROR; |
|
0376cffa29e6
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parents:
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diff
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|
1341 } |
|
0376cffa29e6
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parents:
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diff
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|
1342 |
|
0376cffa29e6
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diff
changeset
|
1343 return NGX_CONF_OK; |
|
0376cffa29e6
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parents:
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diff
changeset
|
1344 } |
|
0376cffa29e6
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parents:
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changeset
|
1345 |
|
0376cffa29e6
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|
1346 |
| 501 | 1347 static ngx_int_t |
| 1348 ngx_http_add_charset(ngx_array_t *charsets, ngx_str_t *name) | |
|
339
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diff
changeset
|
1349 { |
|
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|
1350 ngx_uint_t i; |
|
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diff
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|
1351 ngx_http_charset_t *c; |
|
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|
1352 |
|
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|
1353 c = charsets->elts; |
|
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|
1354 for (i = 0; i < charsets->nelts; i++) { |
|
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|
1355 if (name->len != c[i].name.len) { |
|
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changeset
|
1356 continue; |
|
8c5b69141dfd
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parents:
338
diff
changeset
|
1357 } |
|
8c5b69141dfd
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parents:
338
diff
changeset
|
1358 |
|
8c5b69141dfd
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338
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changeset
|
1359 if (ngx_strcasecmp(name->data, c[i].name.data) == 0) { |
|
8c5b69141dfd
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338
diff
changeset
|
1360 break; |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
1361 } |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
1362 } |
|
8c5b69141dfd
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diff
changeset
|
1363 |
|
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parents:
338
diff
changeset
|
1364 if (i < charsets->nelts) { |
|
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|
1365 return i; |
|
8c5b69141dfd
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diff
changeset
|
1366 } |
|
8c5b69141dfd
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diff
changeset
|
1367 |
| 501 | 1368 c = ngx_array_push(charsets); |
| 1369 if (c == NULL) { | |
|
339
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changeset
|
1370 return NGX_ERROR; |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
1371 } |
|
8c5b69141dfd
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338
diff
changeset
|
1372 |
| 455 | 1373 c->tables = NULL; |
|
339
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338
diff
changeset
|
1374 c->name = *name; |
| 657 | 1375 c->length = 0; |
|
339
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338
diff
changeset
|
1376 |
|
1107
db7c468c447d
ngx_strcasecmp()/ngx_strncasecmp()
Igor Sysoev <igor@sysoev.ru>
parents:
797
diff
changeset
|
1377 if (ngx_strcasecmp(name->data, (u_char *) "utf-8") == 0) { |
| 523 | 1378 c->utf8 = 1; |
| 667 | 1379 |
| 1380 } else { | |
| 1381 c->utf8 = 0; | |
| 523 | 1382 } |
| 1383 | |
|
339
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changeset
|
1384 return i; |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
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changeset
|
1385 } |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
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changeset
|
1386 |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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338
diff
changeset
|
1387 |
| 501 | 1388 static void * |
| 1389 ngx_http_charset_create_main_conf(ngx_conf_t *cf) | |
|
338
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parents:
307
diff
changeset
|
1390 { |
|
0376cffa29e6
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parents:
307
diff
changeset
|
1391 ngx_http_charset_main_conf_t *mcf; |
|
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diff
changeset
|
1392 |
| 501 | 1393 mcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_charset_main_conf_t)); |
| 1394 if (mcf == NULL) { | |
|
339
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diff
changeset
|
1395 return NGX_CONF_ERROR; |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
1396 } |
|
338
0376cffa29e6
nginx-0.0.3-2004-05-20-21:33:52 import
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parents:
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diff
changeset
|
1397 |
| 501 | 1398 if (ngx_array_init(&mcf->charsets, cf->pool, 2, sizeof(ngx_http_charset_t)) |
| 529 | 1399 == NGX_ERROR) |
| 501 | 1400 { |
| 1401 return NGX_CONF_ERROR; | |
| 1402 } | |
|
339
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338
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changeset
|
1403 |
| 529 | 1404 if (ngx_array_init(&mcf->tables, cf->pool, 1, |
| 501 | 1405 sizeof(ngx_http_charset_tables_t)) == NGX_ERROR) |
| 1406 { | |
| 1407 return NGX_CONF_ERROR; | |
| 1408 } | |
|
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1409 |
| 529 | 1410 if (ngx_array_init(&mcf->recodes, cf->pool, 2, |
| 1411 sizeof(ngx_http_charset_recode_t)) == NGX_ERROR) | |
| 1412 { | |
| 1413 return NGX_CONF_ERROR; | |
| 1414 } | |
| 1415 | |
|
338
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1416 return mcf; |
|
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1417 } |
|
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1418 |
|
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1419 |
| 501 | 1420 static void * |
| 1421 ngx_http_charset_create_loc_conf(ngx_conf_t *cf) | |
|
99
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1422 { |
|
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1423 ngx_http_charset_loc_conf_t *lcf; |
|
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1424 |
| 501 | 1425 lcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_charset_loc_conf_t)); |
| 1426 if (lcf == NULL) { | |
|
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1427 return NGX_CONF_ERROR; |
|
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1428 } |
|
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1429 |
| 529 | 1430 lcf->charset = NGX_CONF_UNSET; |
|
339
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1431 lcf->source_charset = NGX_CONF_UNSET; |
| 635 | 1432 lcf->override_charset = NGX_CONF_UNSET; |
|
99
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1433 |
|
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1434 return lcf; |
|
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1435 } |
|
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1436 |
|
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1437 |
| 501 | 1438 static char * |
| 1439 ngx_http_charset_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
|
99
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1440 { |
|
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|
1441 ngx_http_charset_loc_conf_t *prev = parent; |
|
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|
1442 ngx_http_charset_loc_conf_t *conf = child; |
|
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|
1443 |
| 529 | 1444 ngx_uint_t i; |
| 1445 ngx_http_charset_recode_t *recode; | |
| 1446 ngx_http_charset_main_conf_t *mcf; | |
| 477 | 1447 |
| 635 | 1448 ngx_conf_merge_value(conf->override_charset, prev->override_charset, 0); |
| 529 | 1449 ngx_conf_merge_value(conf->charset, prev->charset, NGX_HTTP_NO_CHARSET); |
| 477 | 1450 |
|
339
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1451 if (conf->source_charset == NGX_CONF_UNSET) { |
|
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|
1452 conf->source_charset = prev->source_charset; |
|
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|
1453 } |
|
99
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|
1454 |
| 529 | 1455 if (conf->charset == NGX_HTTP_NO_CHARSET |
| 1456 || conf->source_charset == NGX_CONF_UNSET | |
| 1457 || conf->charset == conf->source_charset) | |
| 477 | 1458 { |
| 529 | 1459 return NGX_CONF_OK; |
| 477 | 1460 } |
| 1461 | |
| 529 | 1462 mcf = ngx_http_conf_get_module_main_conf(cf, |
| 1463 ngx_http_charset_filter_module); | |
| 1464 recode = mcf->recodes.elts; | |
| 1465 for (i = 0; i < mcf->recodes.nelts; i++) { | |
| 1466 if (conf->source_charset == recode[i].src | |
| 1467 && conf->charset == recode[i].dst) | |
| 1468 { | |
| 1469 return NGX_CONF_OK; | |
| 1470 } | |
| 477 | 1471 } |
| 1472 | |
| 529 | 1473 recode = ngx_array_push(&mcf->recodes); |
| 1474 if (recode == NULL) { | |
| 477 | 1475 return NGX_CONF_ERROR; |
| 1476 } | |
|
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diff
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|
1477 |
| 529 | 1478 recode->src = conf->source_charset; |
| 1479 recode->dst = conf->charset; | |
| 1480 | |
|
99
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1481 return NGX_CONF_OK; |
|
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diff
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|
1482 } |
| 529 | 1483 |
| 1484 | |
| 1485 static ngx_int_t | |
| 1486 ngx_http_charset_postconfiguration(ngx_conf_t *cf) | |
| 1487 { | |
| 635 | 1488 u_char **src, **dst; |
| 529 | 1489 ngx_int_t c; |
| 1490 ngx_uint_t i, t; | |
| 1491 ngx_http_charset_t *charset; | |
| 1492 ngx_http_charset_recode_t *recode; | |
| 1493 ngx_http_charset_tables_t *tables; | |
| 1494 ngx_http_charset_main_conf_t *mcf; | |
| 1495 | |
| 1496 mcf = ngx_http_conf_get_module_main_conf(cf, | |
| 1497 ngx_http_charset_filter_module); | |
| 1498 | |
| 1499 recode = mcf->recodes.elts; | |
| 1500 tables = mcf->tables.elts; | |
| 1501 charset = mcf->charsets.elts; | |
| 1502 | |
| 1503 for (i = 0; i < mcf->recodes.nelts; i++) { | |
| 1504 | |
| 1505 c = recode[i].src; | |
| 1506 | |
| 1507 for (t = 0; t < mcf->tables.nelts; t++) { | |
| 1508 | |
| 1509 if (c == tables[t].src && recode[i].dst == tables[t].dst) { | |
| 1510 goto next; | |
| 1511 } | |
| 1512 | |
| 1513 if (c == tables[t].dst && recode[i].dst == tables[t].src) { | |
| 1514 goto next; | |
| 1515 } | |
| 1516 } | |
| 1517 | |
| 1518 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 1519 " no \"charset_map\" between the charsets " | |
| 1520 "\"%V\" and \"%V\"", | |
| 1521 &charset[c].name, &charset[recode[i].dst].name); | |
| 1522 return NGX_ERROR; | |
| 1523 | |
| 1524 next: | |
| 1525 continue; | |
| 1526 } | |
| 1527 | |
| 635 | 1528 |
| 1529 for (t = 0; t < mcf->tables.nelts; t++) { | |
| 1530 | |
| 1531 src = charset[tables[t].src].tables; | |
| 1532 | |
| 1533 if (src == NULL) { | |
| 1534 src = ngx_pcalloc(cf->pool, sizeof(u_char *) * mcf->charsets.nelts); | |
| 1535 if (src == NULL) { | |
| 1536 return NGX_ERROR; | |
| 1537 } | |
| 1538 | |
| 1539 charset[tables[t].src].tables = src; | |
| 1540 } | |
| 1541 | |
| 1542 dst = charset[tables[t].dst].tables; | |
| 1543 | |
| 1544 if (dst == NULL) { | |
| 1545 dst = ngx_pcalloc(cf->pool, sizeof(u_char *) * mcf->charsets.nelts); | |
| 1546 if (dst == NULL) { | |
| 1547 return NGX_ERROR; | |
| 1548 } | |
| 1549 | |
| 1550 charset[tables[t].dst].tables = dst; | |
| 1551 } | |
| 1552 | |
| 1553 src[tables[t].dst] = tables[t].src2dst; | |
| 1554 dst[tables[t].src] = tables[t].dst2src; | |
| 1555 } | |
| 1556 | |
| 681 | 1557 ngx_http_next_header_filter = ngx_http_top_header_filter; |
| 1558 ngx_http_top_header_filter = ngx_http_charset_header_filter; | |
| 1559 | |
| 1560 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
| 1561 ngx_http_top_body_filter = ngx_http_charset_body_filter; | |
| 1562 | |
| 529 | 1563 return NGX_OK; |
| 1564 } |