Mercurial > hg > nginx
annotate src/http/modules/ngx_http_charset_filter_module.c @ 1588:86fbcc394564
style fix
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Thu, 18 Oct 2007 16:12:55 +0000 |
| parents | acb9b38cb791 |
| children | 4705b76bb08b |
| 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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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; |
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190 ngx_str_t *mc, *from, *to, s; |
| 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 s.len = vv->len; |
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260 s.data = vv->data; |
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261 |
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262 charset = ngx_http_charset_get_charset(charsets, n, &s); |
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263 } |
| 653 | 264 } |
| 265 | |
| 266 } else { | |
| 657 | 267 ctx = ngx_http_get_module_ctx(r->main, ngx_http_charset_filter_module); |
| 268 | |
| 269 if (ctx == NULL) { | |
| 270 | |
| 271 mc = &r->main->headers_out.charset; | |
| 272 | |
| 273 if (mc->len == 0) { | |
| 274 return ngx_http_next_header_filter(r); | |
| 275 } | |
| 276 | |
| 277 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_charset_ctx_t)); | |
| 278 if (ctx == NULL) { | |
| 279 return NGX_ERROR; | |
| 280 } | |
| 281 | |
| 282 ngx_http_set_ctx(r->main, ctx, ngx_http_charset_filter_module); | |
| 653 | 283 |
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284 charset = ngx_http_charset_get_charset(charsets, n, mc); |
| 657 | 285 |
| 286 ctx->charset = charset; | |
| 287 | |
| 661 | 288 } else { |
| 289 charset = ctx->charset; | |
| 653 | 290 } |
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291 } |
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292 |
| 657 | 293 /* source charset */ |
| 635 | 294 |
| 657 | 295 if (r->headers_out.charset.len == 0) { |
| 296 lcf = ngx_http_get_module_loc_conf(r, ngx_http_charset_filter_module); | |
| 635 | 297 |
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298 source_charset = lcf->source_charset; |
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299 |
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300 if (source_charset >= NGX_HTTP_CHARSET_VAR) { |
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301 vv = ngx_http_get_indexed_variable(r, |
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302 source_charset - NGX_HTTP_CHARSET_VAR); |
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303 |
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304 if (vv == NULL || vv->not_found) { |
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305 return NGX_ERROR; |
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306 } |
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307 |
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308 s.len = vv->len; |
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309 s.data = vv->data; |
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310 |
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311 source_charset = ngx_http_charset_get_charset(charsets, n, &s); |
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312 } |
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313 |
| 661 | 314 if (charset != NGX_HTTP_NO_CHARSET) { |
| 315 return ngx_http_charset_set_charset(r, mcf->charsets.elts, charset, | |
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316 source_charset); |
| 661 | 317 } |
| 318 | |
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319 if (source_charset == NGX_CONF_UNSET) { |
| 661 | 320 return ngx_http_next_header_filter(r); |
| 321 } | |
| 322 | |
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323 from = &charsets[source_charset].name; |
| 663 | 324 to = &r->main->headers_out.charset; |
| 661 | 325 |
| 663 | 326 goto no_charset_map; |
| 657 | 327 } |
| 635 | 328 |
| 657 | 329 source_charset = ngx_http_charset_get_charset(charsets, n, |
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330 &r->headers_out.charset); |
| 635 | 331 |
| 661 | 332 if (charset == NGX_HTTP_NO_CHARSET |
| 333 || source_charset == NGX_HTTP_NO_CHARSET) | |
| 334 { | |
| 335 if (charset != source_charset | |
| 336 || ngx_strcasecmp(r->main->headers_out.charset.data, | |
| 337 r->headers_out.charset.data) | |
| 338 != 0) | |
| 339 { | |
| 663 | 340 from = &r->headers_out.charset; |
| 341 to = (charset == NGX_HTTP_NO_CHARSET) ? | |
| 342 &r->main->headers_out.charset: | |
| 343 &charsets[charset].name; | |
| 344 | |
| 345 goto no_charset_map; | |
| 661 | 346 } |
| 635 | 347 |
| 657 | 348 return ngx_http_next_header_filter(r); |
| 349 } | |
| 635 | 350 |
| 657 | 351 if (source_charset != charset |
| 352 && (charsets[source_charset].tables == NULL | |
| 353 || charsets[source_charset].tables[charset] == NULL)) | |
| 354 { | |
| 663 | 355 from = &charsets[source_charset].name; |
| 356 to = &charsets[charset].name; | |
| 635 | 357 |
| 663 | 358 goto no_charset_map; |
|
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359 } |
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360 |
| 657 | 361 r->headers_out.content_type.len = r->headers_out.content_type_len; |
| 362 | |
| 363 return ngx_http_charset_set_charset(r, mcf->charsets.elts, charset, | |
| 364 source_charset); | |
| 663 | 365 |
| 366 no_charset_map: | |
| 367 | |
| 368 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1587 | 369 "no \"charset_map\" between the charsets \"%V\" and \"%V\"", |
| 370 from, to); | |
| 663 | 371 |
| 372 return ngx_http_next_header_filter(r); | |
| 657 | 373 } |
| 374 | |
| 375 | |
| 376 static ngx_int_t | |
| 377 ngx_http_charset_get_charset(ngx_http_charset_t *charsets, ngx_uint_t n, | |
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378 ngx_str_t *charset) |
| 657 | 379 { |
| 380 ngx_uint_t i; | |
| 381 | |
| 382 for (i = 0; i < n; i++) { | |
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383 if (charsets[i].name.len != charset->len) { |
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384 continue; |
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385 } |
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386 |
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387 if (ngx_strncasecmp(charsets[i].name.data, charset->data, charset->len) |
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388 == 0) |
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389 { |
| 657 | 390 return i; |
| 391 } | |
| 392 } | |
| 393 | |
| 394 return NGX_HTTP_NO_CHARSET; | |
| 395 } | |
| 396 | |
| 397 | |
| 398 static ngx_int_t | |
| 399 ngx_http_charset_set_charset(ngx_http_request_t *r, | |
| 400 ngx_http_charset_t *charsets, ngx_int_t charset, ngx_int_t source_charset) | |
| 401 { | |
| 402 ngx_http_charset_ctx_t *ctx; | |
| 403 | |
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404 if (r->headers_out.status == NGX_HTTP_MOVED_PERMANENTLY |
| 501 | 405 || r->headers_out.status == NGX_HTTP_MOVED_TEMPORARILY) |
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406 { |
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407 /* |
| 635 | 408 * do not set charset for the redirect because NN 4.x |
| 409 * use this charset instead of the next page charset | |
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410 */ |
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411 |
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412 r->headers_out.charset.len = 0; |
| 657 | 413 |
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414 return ngx_http_next_header_filter(r); |
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415 } |
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416 |
| 635 | 417 r->headers_out.charset = charsets[charset].name; |
| 418 r->utf8 = charsets[charset].utf8; | |
| 419 | |
| 420 if (source_charset == NGX_CONF_UNSET || source_charset == charset) { | |
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421 return ngx_http_next_header_filter(r); |
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422 } |
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423 |
| 501 | 424 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_charset_ctx_t)); |
| 425 if (ctx == NULL) { | |
| 426 return NGX_ERROR; | |
| 427 } | |
| 428 | |
| 429 ngx_http_set_ctx(r, ctx, ngx_http_charset_filter_module); | |
| 430 | |
| 635 | 431 ctx->table = charsets[source_charset].tables[charset]; |
| 432 ctx->charset = charset; | |
| 657 | 433 ctx->length = charsets[charset].length; |
| 434 ctx->from_utf8 = charsets[source_charset].utf8; | |
| 435 ctx->to_utf8 = charsets[charset].utf8; | |
| 436 | |
| 663 | 437 r->filter_need_in_memory = 1; |
| 438 | |
| 657 | 439 if ((ctx->to_utf8 || ctx->from_utf8) && r == r->main) { |
| 440 ngx_http_clear_content_length(r); | |
| 663 | 441 |
| 442 } else { | |
| 443 r->filter_need_temporary = 1; | |
| 657 | 444 } |
|
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445 |
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446 return ngx_http_next_header_filter(r); |
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447 } |
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448 |
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449 |
| 501 | 450 static ngx_int_t |
| 451 ngx_http_charset_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
|
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452 { |
| 657 | 453 ngx_int_t rc; |
| 454 ngx_buf_t *b; | |
| 455 ngx_chain_t *cl, *out, **ll; | |
| 635 | 456 ngx_http_charset_ctx_t *ctx; |
|
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457 |
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458 ctx = ngx_http_get_module_ctx(r, ngx_http_charset_filter_module); |
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459 |
| 635 | 460 if (ctx == NULL || ctx->table == NULL) { |
|
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461 return ngx_http_next_body_filter(r, in); |
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462 } |
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463 |
| 657 | 464 if ((ctx->to_utf8 || ctx->from_utf8) || ctx->busy) { |
| 465 | |
| 466 out = NULL; | |
| 467 ll = &out; | |
| 468 | |
| 469 for (cl = in; cl; cl = cl->next) { | |
| 470 b = cl->buf; | |
| 471 | |
| 472 if (ngx_buf_size(b) == 0) { | |
| 665 | 473 |
| 474 *ll = ngx_alloc_chain_link(r->pool); | |
| 475 if (*ll == NULL) { | |
| 476 return NGX_ERROR; | |
| 477 } | |
| 478 | |
| 479 (*ll)->buf = b; | |
| 480 (*ll)->next = NULL; | |
| 481 | |
| 482 ll = &(*ll)->next; | |
| 483 | |
| 657 | 484 continue; |
| 485 } | |
| 486 | |
| 487 if (ctx->to_utf8) { | |
| 488 *ll = ngx_http_charset_recode_to_utf8(r->pool, b, ctx); | |
| 489 | |
| 490 } else { | |
| 491 *ll = ngx_http_charset_recode_from_utf8(r->pool, b, ctx); | |
| 492 } | |
| 493 | |
| 494 if (*ll == NULL) { | |
| 495 return NGX_ERROR; | |
| 496 } | |
| 497 | |
| 498 while (*ll) { | |
| 499 ll = &(*ll)->next; | |
| 500 } | |
| 501 } | |
| 502 | |
| 503 rc = ngx_http_next_body_filter(r, out); | |
| 504 | |
| 505 if (out) { | |
| 506 if (ctx->busy == NULL) { | |
| 507 ctx->busy = out; | |
| 508 | |
| 509 } else { | |
| 510 for (cl = ctx->busy; cl->next; cl = cl->next) { /* void */ } | |
| 511 cl->next = out; | |
| 512 } | |
| 513 } | |
| 514 | |
| 515 while (ctx->busy) { | |
| 516 | |
| 517 cl = ctx->busy; | |
| 518 b = cl->buf; | |
| 519 | |
| 520 if (ngx_buf_size(b) != 0) { | |
| 521 break; | |
| 522 } | |
| 523 | |
| 524 #if (NGX_HAVE_WRITE_ZEROCOPY) | |
| 525 if (b->zerocopy_busy) { | |
| 526 break; | |
| 527 } | |
| 528 #endif | |
| 529 | |
| 530 ctx->busy = cl->next; | |
| 531 | |
| 532 if (b->tag != (ngx_buf_tag_t) &ngx_http_charset_filter_module) { | |
| 533 continue; | |
| 534 } | |
| 535 | |
| 536 if (b->shadow) { | |
| 537 b->shadow->pos = b->shadow->last; | |
| 538 } | |
| 539 | |
| 540 if (b->pos) { | |
| 541 cl->next = ctx->free_buffers; | |
| 542 ctx->free_buffers = cl; | |
| 543 continue; | |
| 544 } | |
| 545 | |
| 546 cl->next = ctx->free_bufs; | |
| 547 ctx->free_bufs = cl; | |
| 548 } | |
| 549 | |
| 550 return rc; | |
| 551 } | |
| 552 | |
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553 for (cl = in; cl; cl = cl->next) { |
| 635 | 554 (void) ngx_http_charset_recode(cl->buf, ctx->table); |
|
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555 } |
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556 |
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557 return ngx_http_next_body_filter(r, in); |
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558 } |
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559 |
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560 |
| 501 | 561 static ngx_uint_t |
| 635 | 562 ngx_http_charset_recode(ngx_buf_t *b, u_char *table) |
|
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563 { |
| 635 | 564 u_char *p; |
|
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565 |
|
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566 for (p = b->pos; p < b->last; p++) { |
| 635 | 567 |
| 568 if (*p == table[*p]) { | |
| 569 continue; | |
| 455 | 570 } |
| 571 | |
| 572 while (p < b->last) { | |
| 573 *p = table[*p]; | |
| 574 p++; | |
| 575 } | |
| 576 | |
| 577 b->in_file = 0; | |
| 635 | 578 |
| 579 return 1; | |
| 455 | 580 } |
| 581 | |
| 635 | 582 return 0; |
|
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583 } |
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584 |
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585 |
| 657 | 586 static ngx_chain_t * |
| 587 ngx_http_charset_recode_from_utf8(ngx_pool_t *pool, ngx_buf_t *buf, | |
| 588 ngx_http_charset_ctx_t *ctx) | |
| 589 { | |
| 590 size_t len, size; | |
| 591 u_char c, *p, *src, *dst, *saved, **table; | |
| 592 uint32_t n; | |
| 593 ngx_buf_t *b; | |
| 594 ngx_uint_t i; | |
| 595 ngx_chain_t *out, *cl, **ll; | |
| 596 | |
| 597 src = buf->pos; | |
| 598 | |
| 599 if (ctx->saved_len == 0) { | |
| 600 | |
| 601 for ( /* void */ ; src < buf->last; src++) { | |
| 602 | |
| 603 if (*src < 0x80) { | |
| 604 continue; | |
| 605 } | |
| 606 | |
| 607 len = src - buf->pos; | |
| 608 | |
| 609 if (len > 512) { | |
| 610 out = ngx_http_charset_get_buf(pool, ctx); | |
| 611 if (out == NULL) { | |
| 612 return NULL; | |
| 613 } | |
| 614 | |
| 615 b = out->buf; | |
| 616 | |
| 617 b->temporary = buf->temporary; | |
| 618 b->memory = buf->memory; | |
| 619 b->mmap = buf->mmap; | |
| 620 b->flush = buf->flush; | |
| 621 | |
| 622 b->pos = buf->pos; | |
| 623 b->last = src; | |
| 624 | |
| 625 out->buf = b; | |
| 626 out->next = NULL; | |
| 627 | |
| 628 size = buf->last - src; | |
| 629 | |
| 630 saved = src; | |
| 631 n = ngx_utf_decode(&saved, size); | |
| 632 | |
| 633 if (n == 0xfffffffe) { | |
| 634 /* incomplete UTF-8 symbol */ | |
| 635 | |
| 636 ngx_memcpy(ctx->saved, src, size); | |
| 637 ctx->saved_len = size; | |
| 638 | |
| 639 b->shadow = buf; | |
| 640 | |
| 641 return out; | |
| 642 } | |
| 643 | |
| 644 } else { | |
| 645 out = NULL; | |
| 646 size = len + buf->last - src; | |
| 647 src = buf->pos; | |
| 648 } | |
| 649 | |
| 650 if (size < NGX_HTML_ENTITY_LEN) { | |
| 651 size += NGX_HTML_ENTITY_LEN; | |
| 652 } | |
| 653 | |
| 654 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 655 if (cl == NULL) { | |
| 656 return NULL; | |
| 657 } | |
| 658 | |
| 659 if (out) { | |
| 660 out->next = cl; | |
| 661 | |
| 662 } else { | |
| 663 out = cl; | |
| 664 } | |
| 665 | |
| 666 b = cl->buf; | |
| 667 dst = b->pos; | |
| 668 | |
| 669 goto recode; | |
| 670 } | |
| 671 | |
| 672 out = ngx_alloc_chain_link(pool); | |
| 673 if (out == NULL) { | |
| 674 return NULL; | |
| 675 } | |
| 676 | |
| 677 out->buf = buf; | |
| 678 out->next = NULL; | |
| 679 | |
| 680 return out; | |
| 681 } | |
| 682 | |
| 683 /* process incomplete UTF sequence from previous buffer */ | |
| 684 | |
| 685 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pool->log, 0, | |
| 686 "http charset utf saved: %z", ctx->saved_len); | |
| 687 | |
| 688 p = src; | |
| 689 | |
| 690 for (i = ctx->saved_len; i < NGX_UTF_LEN; i++) { | |
| 691 ctx->saved[i] = *p++; | |
| 692 | |
| 693 if (p == buf->last) { | |
| 694 break; | |
| 695 } | |
| 696 } | |
| 697 | |
| 698 saved = ctx->saved; | |
| 699 n = ngx_utf_decode(&saved, i); | |
| 700 | |
| 701 c = '\0'; | |
| 702 | |
| 703 if (n < 0x10000) { | |
| 704 table = (u_char **) ctx->table; | |
| 705 p = table[n >> 8]; | |
| 706 | |
| 707 if (p) { | |
| 708 c = p[n & 0xff]; | |
| 709 } | |
| 710 | |
| 711 } else if (n == 0xfffffffe) { | |
| 712 | |
| 713 /* incomplete UTF-8 symbol */ | |
| 714 | |
| 715 if (i < NGX_UTF_LEN) { | |
| 716 out = ngx_http_charset_get_buf(pool, ctx); | |
| 717 if (out == NULL) { | |
| 718 return NULL; | |
| 719 } | |
| 720 | |
| 721 b = out->buf; | |
| 722 | |
| 723 b->pos = buf->pos; | |
| 724 b->last = buf->last; | |
| 725 b->sync = 1; | |
| 726 b->shadow = buf; | |
| 727 | |
| 728 ngx_memcpy(&ctx->saved[ctx->saved_len], src, i); | |
| 729 ctx->saved_len += i; | |
| 730 | |
| 731 return out; | |
| 732 } | |
| 733 } | |
| 734 | |
| 735 size = buf->last - buf->pos; | |
| 736 | |
| 737 if (size < NGX_HTML_ENTITY_LEN) { | |
| 738 size += NGX_HTML_ENTITY_LEN; | |
| 739 } | |
| 740 | |
| 741 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 742 if (cl == NULL) { | |
| 743 return NULL; | |
| 744 } | |
| 745 | |
| 746 out = cl; | |
| 747 | |
| 748 b = cl->buf; | |
| 749 dst = b->pos; | |
| 750 | |
| 751 if (c) { | |
| 752 *dst++ = c; | |
| 753 | |
| 754 } else if (n == 0xfffffffe) { | |
| 755 *dst++ = '?'; | |
| 756 | |
| 757 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pool->log, 0, | |
| 758 "http charset invalid utf 0"); | |
| 759 | |
| 760 saved = &ctx->saved[NGX_UTF_LEN]; | |
| 761 | |
| 762 } else if (n > 0x10ffff) { | |
| 763 *dst++ = '?'; | |
| 764 | |
| 765 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pool->log, 0, | |
| 766 "http charset invalid utf 1"); | |
| 767 | |
| 768 } else { | |
| 769 dst = ngx_sprintf(dst, "&#%uD;", n); | |
| 770 } | |
| 771 | |
| 772 src += (saved - ctx->saved) - ctx->saved_len; | |
| 773 ctx->saved_len = 0; | |
| 774 | |
| 775 recode: | |
| 776 | |
| 777 ll = &cl->next; | |
| 778 | |
| 779 table = (u_char **) ctx->table; | |
| 780 | |
| 781 while (src < buf->last) { | |
| 782 | |
| 783 if ((size_t) (b->end - dst) < NGX_HTML_ENTITY_LEN) { | |
| 784 b->last = dst; | |
| 785 | |
| 786 size = buf->last - src + NGX_HTML_ENTITY_LEN; | |
| 787 | |
| 788 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 789 if (cl == NULL) { | |
| 790 return NULL; | |
| 791 } | |
| 792 | |
| 793 *ll = cl; | |
| 794 ll = &cl->next; | |
| 795 | |
| 796 b = cl->buf; | |
| 797 dst = b->pos; | |
| 798 } | |
| 799 | |
| 800 if (*src < 0x80) { | |
| 801 *dst++ = *src++; | |
| 802 continue; | |
| 803 } | |
| 804 | |
| 805 len = buf->last - src; | |
| 806 | |
| 807 n = ngx_utf_decode(&src, len); | |
| 808 | |
| 809 if (n < 0x10000) { | |
| 810 | |
| 811 p = table[n >> 8]; | |
| 812 | |
| 813 if (p) { | |
| 814 c = p[n & 0xff]; | |
| 815 | |
| 816 if (c) { | |
| 817 *dst++ = c; | |
| 818 continue; | |
| 819 } | |
| 820 } | |
| 821 | |
| 822 dst = ngx_sprintf(dst, "&#%uD;", n); | |
| 823 | |
| 824 continue; | |
| 825 } | |
| 826 | |
| 827 if (n == 0xfffffffe) { | |
| 828 /* incomplete UTF-8 symbol */ | |
| 829 | |
| 830 ngx_memcpy(ctx->saved, src, len); | |
| 831 ctx->saved_len = len; | |
| 832 | |
| 833 if (b->pos == dst) { | |
| 834 b->sync = 1; | |
| 835 b->temporary = 0; | |
| 836 } | |
| 837 | |
| 838 break; | |
| 839 } | |
| 840 | |
| 841 if (n > 0x10ffff) { | |
| 842 *dst++ = '?'; | |
| 843 | |
| 844 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pool->log, 0, | |
| 845 "http charset invalid utf 2"); | |
| 846 | |
| 847 continue; | |
| 848 } | |
| 849 | |
| 850 /* n > 0xffff */ | |
| 851 | |
| 852 dst = ngx_sprintf(dst, "&#%uD;", n); | |
| 853 } | |
| 854 | |
| 855 b->last = dst; | |
| 856 | |
| 857 b->last_buf = buf->last_buf; | |
| 858 b->last_in_chain = buf->last_in_chain; | |
| 859 b->flush = buf->flush; | |
| 860 | |
| 861 b->shadow = buf; | |
| 862 | |
| 863 return out; | |
| 864 } | |
| 865 | |
| 866 | |
| 867 static ngx_chain_t * | |
| 868 ngx_http_charset_recode_to_utf8(ngx_pool_t *pool, ngx_buf_t *buf, | |
| 869 ngx_http_charset_ctx_t *ctx) | |
| 870 { | |
| 871 size_t len, size; | |
| 872 u_char *p, *src, *dst, *table; | |
| 873 ngx_buf_t *b; | |
| 874 ngx_chain_t *out, *cl, **ll; | |
| 875 | |
| 876 table = ctx->table; | |
| 877 | |
| 878 for (src = buf->pos; src < buf->last; src++) { | |
| 879 if (table[*src * NGX_UTF_LEN] == '\1') { | |
| 880 continue; | |
| 881 } | |
| 882 | |
| 883 goto recode; | |
| 884 } | |
| 885 | |
| 886 out = ngx_alloc_chain_link(pool); | |
| 887 if (out == NULL) { | |
| 888 return NULL; | |
| 889 } | |
| 890 | |
| 891 out->buf = buf; | |
| 892 out->next = NULL; | |
| 893 | |
| 894 return out; | |
| 895 | |
| 896 recode: | |
| 897 | |
| 898 /* | |
| 899 * we assume that there are about half of characters to be recoded, | |
| 900 * so we preallocate "size / 2 + size / 2 * ctx->length" | |
| 901 */ | |
| 902 | |
| 903 len = src - buf->pos; | |
| 904 | |
| 905 if (len > 512) { | |
| 906 out = ngx_http_charset_get_buf(pool, ctx); | |
| 907 if (out == NULL) { | |
| 908 return NULL; | |
| 909 } | |
| 910 | |
| 911 b = out->buf; | |
| 912 | |
| 913 b->temporary = buf->temporary; | |
| 914 b->memory = buf->memory; | |
| 915 b->mmap = buf->mmap; | |
| 916 b->flush = buf->flush; | |
| 917 | |
| 918 b->pos = buf->pos; | |
| 919 b->last = src; | |
| 920 | |
| 921 out->buf = b; | |
| 922 out->next = NULL; | |
| 923 | |
| 924 size = buf->last - src; | |
| 925 size = size / 2 + size / 2 * ctx->length; | |
| 926 | |
| 927 } else { | |
| 928 out = NULL; | |
| 929 | |
| 930 size = buf->last - src; | |
| 931 size = len + size / 2 + size / 2 * ctx->length; | |
| 932 | |
| 933 src = buf->pos; | |
| 934 } | |
| 935 | |
| 936 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 937 if (cl == NULL) { | |
| 938 return NULL; | |
| 939 } | |
| 940 | |
| 941 if (out) { | |
| 942 out->next = cl; | |
| 943 | |
| 944 } else { | |
| 945 out = cl; | |
| 946 } | |
| 947 | |
| 948 ll = &cl->next; | |
| 949 | |
| 950 b = cl->buf; | |
| 951 dst = b->pos; | |
| 952 | |
| 953 while (src < buf->last) { | |
| 954 | |
| 955 p = &table[*src++ * NGX_UTF_LEN]; | |
| 956 len = *p++; | |
| 957 | |
| 958 if ((size_t) (b->end - dst) < len) { | |
| 959 b->last = dst; | |
| 960 | |
| 961 size = buf->last - src; | |
| 962 size = len + size / 2 + size / 2 * ctx->length; | |
| 963 | |
| 964 cl = ngx_http_charset_get_buffer(pool, ctx, size); | |
| 965 if (cl == NULL) { | |
| 966 return NULL; | |
| 967 } | |
| 968 | |
| 969 *ll = cl; | |
| 970 ll = &cl->next; | |
| 971 | |
| 972 b = cl->buf; | |
| 973 dst = b->pos; | |
| 974 } | |
| 975 | |
| 976 while (len) { | |
| 977 *dst++ = *p++; | |
| 978 len--; | |
| 979 } | |
| 980 } | |
| 981 | |
| 982 b->last = dst; | |
| 983 | |
| 984 b->last_buf = buf->last_buf; | |
| 985 b->last_in_chain = buf->last_in_chain; | |
| 986 b->flush = buf->flush; | |
| 987 | |
| 988 b->shadow = buf; | |
| 989 | |
| 990 return out; | |
| 991 } | |
| 992 | |
| 993 | |
| 994 static ngx_chain_t * | |
| 995 ngx_http_charset_get_buf(ngx_pool_t *pool, ngx_http_charset_ctx_t *ctx) | |
| 996 { | |
| 997 ngx_chain_t *cl; | |
| 998 | |
| 999 cl = ctx->free_bufs; | |
| 1000 | |
| 1001 if (cl) { | |
| 1002 ctx->free_bufs = cl->next; | |
| 1003 | |
| 1004 cl->buf->shadow = NULL; | |
| 1005 cl->next = NULL; | |
| 1006 | |
| 1007 return cl; | |
| 1008 } | |
| 1009 | |
| 1010 cl = ngx_alloc_chain_link(pool); | |
| 1011 if (cl == NULL) { | |
| 1012 return NULL; | |
| 1013 } | |
| 1014 | |
| 1015 cl->buf = ngx_calloc_buf(pool); | |
| 1016 if (cl->buf == NULL) { | |
| 1017 return NULL; | |
| 1018 } | |
| 1019 | |
| 1020 cl->next = NULL; | |
| 1021 | |
| 1022 cl->buf->tag = (ngx_buf_tag_t) &ngx_http_charset_filter_module; | |
| 1023 | |
| 1024 return cl; | |
| 1025 } | |
| 1026 | |
| 1027 | |
| 1028 static ngx_chain_t * | |
| 1029 ngx_http_charset_get_buffer(ngx_pool_t *pool, ngx_http_charset_ctx_t *ctx, | |
| 1030 size_t size) | |
| 1031 { | |
| 1032 ngx_buf_t *b; | |
| 1033 ngx_chain_t *cl, **ll; | |
| 1034 | |
| 1035 for (ll = &ctx->free_buffers, cl = ctx->free_buffers; | |
| 1036 cl; | |
| 1037 ll = &cl->next, cl = cl->next) | |
| 1038 { | |
| 1039 b = cl->buf; | |
| 1040 | |
| 1041 if ((size_t) (b->end - b->start) >= size) { | |
| 1042 *ll = cl->next; | |
| 1043 cl->next = NULL; | |
| 1044 | |
| 1045 b->pos = b->start; | |
| 1046 b->temporary = 1; | |
| 1047 b->shadow = NULL; | |
| 1048 | |
| 1049 return cl; | |
| 1050 } | |
| 1051 } | |
| 1052 | |
| 1053 cl = ngx_alloc_chain_link(pool); | |
| 1054 if (cl == NULL) { | |
| 1055 return NULL; | |
| 1056 } | |
| 1057 | |
| 1058 cl->buf = ngx_create_temp_buf(pool, size); | |
| 1059 if (cl->buf == NULL) { | |
| 1060 return NULL; | |
| 1061 } | |
| 1062 | |
| 1063 cl->next = NULL; | |
| 1064 | |
| 1065 cl->buf->temporary = 1; | |
| 1066 cl->buf->tag = (ngx_buf_tag_t) &ngx_http_charset_filter_module; | |
| 1067 | |
| 1068 return cl; | |
| 1069 } | |
| 1070 | |
| 1071 | |
| 501 | 1072 static char * |
| 657 | 1073 ngx_http_charset_map_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
|
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1074 { |
|
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1075 ngx_http_charset_main_conf_t *mcf = conf; |
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1076 |
| 657 | 1077 char *rv; |
| 1078 u_char *p, *dst2src, **pp; | |
| 1079 ngx_int_t src, dst; | |
| 1080 ngx_uint_t i, n; | |
| 1081 ngx_str_t *value; | |
| 1082 ngx_conf_t pvcf; | |
| 1083 ngx_http_charset_t *charset; | |
| 1084 ngx_http_charset_tables_t *table; | |
| 1085 ngx_http_charset_conf_ctx_t ctx; | |
|
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1086 |
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1087 value = cf->args->elts; |
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1088 |
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1089 src = ngx_http_add_charset(&mcf->charsets, &value[1]); |
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1090 if (src == NGX_ERROR) { |
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1091 return NGX_CONF_ERROR; |
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1092 } |
|
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1093 |
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1094 dst = ngx_http_add_charset(&mcf->charsets, &value[2]); |
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1095 if (dst == NGX_ERROR) { |
|
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1096 return NGX_CONF_ERROR; |
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1097 } |
|
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1098 |
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1099 if (src == dst) { |
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1100 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
|
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1101 "\"charset_map\" between the same charsets " |
| 461 | 1102 "\"%V\" and \"%V\"", &value[1], &value[2]); |
|
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1103 return NGX_CONF_ERROR; |
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1104 } |
|
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1105 |
|
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1106 table = mcf->tables.elts; |
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1107 for (i = 0; i < mcf->tables.nelts; i++) { |
|
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1108 if ((src == table->src && dst == table->dst) |
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1109 || (src == table->dst && dst == table->src)) |
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1110 { |
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1111 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
|
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1112 "duplicate \"charset_map\" between " |
| 461 | 1113 "\"%V\" and \"%V\"", &value[1], &value[2]); |
|
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1114 return NGX_CONF_ERROR; |
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1115 } |
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1116 } |
|
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1117 |
| 501 | 1118 table = ngx_array_push(&mcf->tables); |
| 1119 if (table == NULL) { | |
|
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1120 return NGX_CONF_ERROR; |
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1121 } |
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1122 |
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1123 table->src = src; |
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1124 table->dst = dst; |
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1125 |
|
1107
db7c468c447d
ngx_strcasecmp()/ngx_strncasecmp()
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797
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|
1126 if (ngx_strcasecmp(value[2].data, (u_char *) "utf-8") == 0) { |
| 657 | 1127 table->src2dst = ngx_pcalloc(cf->pool, 256 * NGX_UTF_LEN); |
| 1128 if (table->src2dst == NULL) { | |
| 1129 return NGX_CONF_ERROR; | |
| 1130 } | |
| 1131 | |
| 1132 table->dst2src = ngx_pcalloc(cf->pool, 256 * sizeof(void *)); | |
| 1133 if (table->dst2src == NULL) { | |
| 1134 return NGX_CONF_ERROR; | |
| 1135 } | |
| 1136 | |
| 1137 dst2src = ngx_pcalloc(cf->pool, 256); | |
| 1138 if (dst2src == NULL) { | |
| 1139 return NGX_CONF_ERROR; | |
| 1140 } | |
| 1141 | |
| 1142 pp = (u_char **) &table->dst2src[0]; | |
| 1143 pp[0] = dst2src; | |
| 1144 | |
| 1145 for (i = 0; i < 128; i++) { | |
| 1146 p = &table->src2dst[i * NGX_UTF_LEN]; | |
| 1147 p[0] = '\1'; | |
| 1148 p[1] = (u_char) i; | |
| 1149 dst2src[i] = (u_char) i; | |
| 1150 } | |
|
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1151 |
| 657 | 1152 for (/* void */; i < 256; i++) { |
| 1153 p = &table->src2dst[i * NGX_UTF_LEN]; | |
| 1154 p[0] = '\1'; | |
| 1155 p[1] = '?'; | |
| 1156 } | |
| 1157 | |
| 1158 } else { | |
| 1159 table->src2dst = ngx_palloc(cf->pool, 256); | |
| 1160 if (table->src2dst == NULL) { | |
| 1161 return NGX_CONF_ERROR; | |
| 1162 } | |
| 1163 | |
| 1164 table->dst2src = ngx_palloc(cf->pool, 256); | |
| 1165 if (table->dst2src == NULL) { | |
| 1166 return NGX_CONF_ERROR; | |
| 1167 } | |
| 1168 | |
| 1169 for (i = 0; i < 128; i++) { | |
| 1170 table->src2dst[i] = (u_char) i; | |
| 1171 table->dst2src[i] = (u_char) i; | |
| 1172 } | |
| 1173 | |
| 1174 for (/* void */; i < 256; i++) { | |
| 1175 table->src2dst[i] = '?'; | |
| 1176 table->dst2src[i] = '?'; | |
| 1177 } | |
|
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|
1178 } |
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1179 |
| 657 | 1180 charset = mcf->charsets.elts; |
|
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|
1181 |
| 657 | 1182 ctx.table = table; |
| 1183 ctx.charset = &charset[dst]; | |
| 1184 ctx.characters = 0; | |
|
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1185 |
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|
1186 pvcf = *cf; |
| 657 | 1187 cf->ctx = &ctx; |
| 1188 cf->handler = ngx_http_charset_map; | |
|
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|
1189 cf->handler_conf = conf; |
| 501 | 1190 |
|
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1191 rv = ngx_conf_parse(cf, NULL); |
| 501 | 1192 |
|
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1193 *cf = pvcf; |
|
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1194 |
| 657 | 1195 if (ctx.characters) { |
| 1196 n = ctx.charset->length; | |
| 1197 ctx.charset->length /= ctx.characters; | |
| 1198 | |
| 1199 if (((n * 10) / ctx.characters) % 10 > 4) { | |
| 1200 ctx.charset->length++; | |
| 1201 } | |
| 1202 } | |
| 1203 | |
|
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1204 return rv; |
|
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1205 } |
|
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|
1206 |
|
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1207 |
| 501 | 1208 static char * |
| 657 | 1209 ngx_http_charset_map(ngx_conf_t *cf, ngx_command_t *dummy, void *conf) |
|
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|
1210 { |
| 657 | 1211 u_char *p, *dst2src, **pp; |
| 1212 uint32_t n; | |
| 1213 ngx_int_t src, dst; | |
| 1214 ngx_str_t *value; | |
| 1215 ngx_uint_t i; | |
| 1216 ngx_http_charset_tables_t *table; | |
| 1217 ngx_http_charset_conf_ctx_t *ctx; | |
|
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|
1218 |
|
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1219 if (cf->args->nelts != 2) { |
|
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1220 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameters number"); |
|
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1221 return NGX_CONF_ERROR; |
|
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|
1222 } |
|
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|
1223 |
|
339
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1224 value = cf->args->elts; |
|
338
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|
1225 |
|
339
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|
1226 src = ngx_hextoi(value[0].data, value[0].len); |
|
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1227 if (src == NGX_ERROR || src > 255) { |
|
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|
1228 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 461 | 1229 "invalid value \"%V\"", &value[0]); |
|
339
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|
1230 return NGX_CONF_ERROR; |
|
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|
1231 } |
|
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|
1232 |
| 657 | 1233 ctx = cf->ctx; |
| 1234 table = ctx->table; | |
| 1235 | |
| 1236 if (ctx->charset->utf8) { | |
| 1237 p = &table->src2dst[src * NGX_UTF_LEN]; | |
| 1238 | |
| 1239 *p++ = (u_char) (value[1].len / 2); | |
| 1240 | |
| 1241 for (i = 0; i < value[1].len; i += 2) { | |
| 1242 dst = ngx_hextoi(&value[1].data[i], 2); | |
| 1243 if (dst == NGX_ERROR || dst > 255) { | |
| 1244 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 1245 "invalid value \"%V\"", &value[1]); | |
| 1246 return NGX_CONF_ERROR; | |
| 1247 } | |
| 1248 | |
| 1249 *p++ = (u_char) dst; | |
| 1250 } | |
| 1251 | |
| 1252 i /= 2; | |
| 1253 | |
| 1254 ctx->charset->length += i; | |
| 1255 ctx->characters++; | |
| 1256 | |
| 1257 p = &table->src2dst[src * NGX_UTF_LEN] + 1; | |
| 1258 | |
| 1259 n = ngx_utf_decode(&p, i); | |
| 1260 | |
| 1261 if (n > 0xffff) { | |
| 1262 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 1263 "invalid value \"%V\"", &value[1]); | |
| 1264 return NGX_CONF_ERROR; | |
| 1265 } | |
| 1266 | |
| 1267 pp = (u_char **) &table->dst2src[0]; | |
| 1268 | |
| 1269 dst2src = pp[n >> 8]; | |
| 1270 | |
| 1271 if (dst2src == NULL) { | |
| 1272 dst2src = ngx_pcalloc(cf->pool, 256); | |
| 1273 if (dst2src == NULL) { | |
| 1274 return NGX_CONF_ERROR; | |
| 1275 } | |
| 1276 | |
| 1277 pp[n >> 8] = dst2src; | |
| 1278 } | |
| 1279 | |
| 1280 dst2src[n & 0xff] = (u_char) src; | |
| 1281 | |
| 1282 } else { | |
| 1283 dst = ngx_hextoi(value[1].data, value[1].len); | |
| 1284 if (dst == NGX_ERROR || dst > 255) { | |
| 1285 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 1286 "invalid value \"%V\"", &value[1]); | |
| 1287 return NGX_CONF_ERROR; | |
| 1288 } | |
| 1289 | |
| 1290 table->src2dst[src] = (u_char) dst; | |
| 1291 table->dst2src[dst] = (u_char) src; | |
|
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|
1292 } |
|
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|
1293 |
|
339
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1294 return NGX_CONF_OK; |
|
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|
1295 } |
|
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|
1296 |
|
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|
1297 |
| 501 | 1298 static char * |
| 1299 ngx_http_set_charset_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
|
339
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|
1300 { |
|
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|
1301 char *p = conf; |
|
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1302 |
|
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|
1303 ngx_int_t *cp; |
|
752
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diff
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|
1304 ngx_str_t *value, var; |
|
339
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|
1305 ngx_http_charset_main_conf_t *mcf; |
|
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|
1306 |
|
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|
1307 cp = (ngx_int_t *) (p + cmd->offset); |
|
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|
1308 |
|
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|
1309 if (*cp != NGX_CONF_UNSET) { |
|
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|
1310 return "is duplicate"; |
|
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|
1311 } |
|
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|
1312 |
| 529 | 1313 value = cf->args->elts; |
| 1314 | |
| 1315 if (cmd->offset == offsetof(ngx_http_charset_loc_conf_t, charset) | |
| 1316 && ngx_strcmp(value[1].data, "off") == 0) | |
| 1317 { | |
| 1318 *cp = NGX_HTTP_NO_CHARSET; | |
| 1319 return NGX_CONF_OK; | |
| 1320 } | |
| 1321 | |
|
752
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diff
changeset
|
1322 |
|
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parents:
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diff
changeset
|
1323 if (value[1].data[0] == '$') { |
|
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|
1324 var.len = value[1].len - 1; |
|
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diff
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|
1325 var.data = value[1].data + 1; |
|
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parents:
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diff
changeset
|
1326 |
|
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diff
changeset
|
1327 *cp = ngx_http_get_variable_index(cf, &var); |
|
907361d07f25
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parents:
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diff
changeset
|
1328 |
|
907361d07f25
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parents:
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diff
changeset
|
1329 if (*cp == NGX_ERROR) { |
|
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diff
changeset
|
1330 return NGX_CONF_ERROR; |
|
907361d07f25
ngx_http_charset_module supports the variables
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parents:
681
diff
changeset
|
1331 } |
|
907361d07f25
ngx_http_charset_module supports the variables
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parents:
681
diff
changeset
|
1332 |
|
907361d07f25
ngx_http_charset_module supports the variables
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parents:
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diff
changeset
|
1333 *cp += NGX_HTTP_CHARSET_VAR; |
|
907361d07f25
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parents:
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diff
changeset
|
1334 |
|
907361d07f25
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parents:
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diff
changeset
|
1335 return NGX_CONF_OK; |
|
907361d07f25
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parents:
681
diff
changeset
|
1336 } |
|
907361d07f25
ngx_http_charset_module supports the variables
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parents:
681
diff
changeset
|
1337 |
|
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
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parents:
389
diff
changeset
|
1338 mcf = ngx_http_conf_get_module_main_conf(cf, |
|
6f3b20c1ac50
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389
diff
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|
1339 ngx_http_charset_filter_module); |
|
6f3b20c1ac50
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parents:
389
diff
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|
1340 |
|
339
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|
1341 *cp = ngx_http_add_charset(&mcf->charsets, &value[1]); |
|
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|
1342 if (*cp == NGX_ERROR) { |
|
338
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diff
changeset
|
1343 return NGX_CONF_ERROR; |
|
0376cffa29e6
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parents:
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diff
changeset
|
1344 } |
|
0376cffa29e6
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parents:
307
diff
changeset
|
1345 |
|
0376cffa29e6
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diff
changeset
|
1346 return NGX_CONF_OK; |
|
0376cffa29e6
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parents:
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diff
changeset
|
1347 } |
|
0376cffa29e6
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parents:
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changeset
|
1348 |
|
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|
1349 |
| 501 | 1350 static ngx_int_t |
| 1351 ngx_http_add_charset(ngx_array_t *charsets, ngx_str_t *name) | |
|
339
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diff
changeset
|
1352 { |
|
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|
1353 ngx_uint_t i; |
|
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diff
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|
1354 ngx_http_charset_t *c; |
|
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changeset
|
1355 |
|
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|
1356 c = charsets->elts; |
|
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|
1357 for (i = 0; i < charsets->nelts; i++) { |
|
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changeset
|
1358 if (name->len != c[i].name.len) { |
|
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diff
changeset
|
1359 continue; |
|
8c5b69141dfd
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parents:
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diff
changeset
|
1360 } |
|
8c5b69141dfd
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parents:
338
diff
changeset
|
1361 |
|
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338
diff
changeset
|
1362 if (ngx_strcasecmp(name->data, c[i].name.data) == 0) { |
|
8c5b69141dfd
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diff
changeset
|
1363 break; |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
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diff
changeset
|
1364 } |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
1365 } |
|
8c5b69141dfd
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diff
changeset
|
1366 |
|
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338
diff
changeset
|
1367 if (i < charsets->nelts) { |
|
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|
1368 return i; |
|
8c5b69141dfd
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changeset
|
1369 } |
|
8c5b69141dfd
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338
diff
changeset
|
1370 |
| 501 | 1371 c = ngx_array_push(charsets); |
| 1372 if (c == NULL) { | |
|
339
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changeset
|
1373 return NGX_ERROR; |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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338
diff
changeset
|
1374 } |
|
8c5b69141dfd
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338
diff
changeset
|
1375 |
| 455 | 1376 c->tables = NULL; |
|
339
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338
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changeset
|
1377 c->name = *name; |
| 657 | 1378 c->length = 0; |
|
339
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diff
changeset
|
1379 |
|
1107
db7c468c447d
ngx_strcasecmp()/ngx_strncasecmp()
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parents:
797
diff
changeset
|
1380 if (ngx_strcasecmp(name->data, (u_char *) "utf-8") == 0) { |
| 523 | 1381 c->utf8 = 1; |
| 667 | 1382 |
| 1383 } else { | |
| 1384 c->utf8 = 0; | |
| 523 | 1385 } |
| 1386 | |
|
339
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changeset
|
1387 return i; |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
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changeset
|
1388 } |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
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changeset
|
1389 |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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338
diff
changeset
|
1390 |
| 501 | 1391 static void * |
| 1392 ngx_http_charset_create_main_conf(ngx_conf_t *cf) | |
|
338
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parents:
307
diff
changeset
|
1393 { |
|
0376cffa29e6
nginx-0.0.3-2004-05-20-21:33:52 import
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parents:
307
diff
changeset
|
1394 ngx_http_charset_main_conf_t *mcf; |
|
0376cffa29e6
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parents:
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diff
changeset
|
1395 |
| 501 | 1396 mcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_charset_main_conf_t)); |
| 1397 if (mcf == NULL) { | |
|
339
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338
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changeset
|
1398 return NGX_CONF_ERROR; |
|
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changeset
|
1399 } |
|
338
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|
1400 |
| 501 | 1401 if (ngx_array_init(&mcf->charsets, cf->pool, 2, sizeof(ngx_http_charset_t)) |
| 529 | 1402 == NGX_ERROR) |
| 501 | 1403 { |
| 1404 return NGX_CONF_ERROR; | |
| 1405 } | |
|
339
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|
1406 |
| 529 | 1407 if (ngx_array_init(&mcf->tables, cf->pool, 1, |
| 501 | 1408 sizeof(ngx_http_charset_tables_t)) == NGX_ERROR) |
| 1409 { | |
| 1410 return NGX_CONF_ERROR; | |
| 1411 } | |
|
338
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1412 |
| 529 | 1413 if (ngx_array_init(&mcf->recodes, cf->pool, 2, |
| 1414 sizeof(ngx_http_charset_recode_t)) == NGX_ERROR) | |
| 1415 { | |
| 1416 return NGX_CONF_ERROR; | |
| 1417 } | |
| 1418 | |
|
338
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1419 return mcf; |
|
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1420 } |
|
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1421 |
|
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1422 |
| 501 | 1423 static void * |
| 1424 ngx_http_charset_create_loc_conf(ngx_conf_t *cf) | |
|
99
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parents:
diff
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|
1425 { |
|
a059e1aa65d4
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parents:
diff
changeset
|
1426 ngx_http_charset_loc_conf_t *lcf; |
|
a059e1aa65d4
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|
1427 |
| 501 | 1428 lcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_charset_loc_conf_t)); |
| 1429 if (lcf == NULL) { | |
|
339
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1430 return NGX_CONF_ERROR; |
|
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|
1431 } |
|
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1432 |
| 529 | 1433 lcf->charset = NGX_CONF_UNSET; |
|
339
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|
1434 lcf->source_charset = NGX_CONF_UNSET; |
| 635 | 1435 lcf->override_charset = NGX_CONF_UNSET; |
|
99
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|
1436 |
|
a059e1aa65d4
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parents:
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changeset
|
1437 return lcf; |
|
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
1438 } |
|
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
1439 |
|
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
1440 |
| 501 | 1441 static char * |
| 1442 ngx_http_charset_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
|
99
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parents:
diff
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|
1443 { |
|
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
1444 ngx_http_charset_loc_conf_t *prev = parent; |
|
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
1445 ngx_http_charset_loc_conf_t *conf = child; |
|
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
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parents:
diff
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|
1446 |
| 529 | 1447 ngx_uint_t i; |
| 1448 ngx_http_charset_recode_t *recode; | |
| 1449 ngx_http_charset_main_conf_t *mcf; | |
| 477 | 1450 |
| 635 | 1451 ngx_conf_merge_value(conf->override_charset, prev->override_charset, 0); |
| 529 | 1452 ngx_conf_merge_value(conf->charset, prev->charset, NGX_HTTP_NO_CHARSET); |
| 477 | 1453 |
|
339
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parents:
338
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changeset
|
1454 if (conf->source_charset == NGX_CONF_UNSET) { |
|
8c5b69141dfd
nginx-0.0.3-2004-05-21-20:12:13 import
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parents:
338
diff
changeset
|
1455 conf->source_charset = prev->source_charset; |
|
8c5b69141dfd
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parents:
338
diff
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|
1456 } |
|
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
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parents:
diff
changeset
|
1457 |
| 529 | 1458 if (conf->charset == NGX_HTTP_NO_CHARSET |
| 1459 || conf->source_charset == NGX_CONF_UNSET | |
| 1460 || conf->charset == conf->source_charset) | |
| 477 | 1461 { |
| 529 | 1462 return NGX_CONF_OK; |
| 477 | 1463 } |
| 1464 | |
| 529 | 1465 mcf = ngx_http_conf_get_module_main_conf(cf, |
| 1466 ngx_http_charset_filter_module); | |
| 1467 recode = mcf->recodes.elts; | |
| 1468 for (i = 0; i < mcf->recodes.nelts; i++) { | |
| 1469 if (conf->source_charset == recode[i].src | |
| 1470 && conf->charset == recode[i].dst) | |
| 1471 { | |
| 1472 return NGX_CONF_OK; | |
| 1473 } | |
| 477 | 1474 } |
| 1475 | |
| 529 | 1476 recode = ngx_array_push(&mcf->recodes); |
| 1477 if (recode == NULL) { | |
| 477 | 1478 return NGX_CONF_ERROR; |
| 1479 } | |
|
340
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parents:
339
diff
changeset
|
1480 |
| 529 | 1481 recode->src = conf->source_charset; |
| 1482 recode->dst = conf->charset; | |
| 1483 | |
|
99
a059e1aa65d4
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parents:
diff
changeset
|
1484 return NGX_CONF_OK; |
|
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
1485 } |
| 529 | 1486 |
| 1487 | |
| 1488 static ngx_int_t | |
| 1489 ngx_http_charset_postconfiguration(ngx_conf_t *cf) | |
| 1490 { | |
| 635 | 1491 u_char **src, **dst; |
| 529 | 1492 ngx_int_t c; |
| 1493 ngx_uint_t i, t; | |
| 1494 ngx_http_charset_t *charset; | |
| 1495 ngx_http_charset_recode_t *recode; | |
| 1496 ngx_http_charset_tables_t *tables; | |
| 1497 ngx_http_charset_main_conf_t *mcf; | |
| 1498 | |
| 1499 mcf = ngx_http_conf_get_module_main_conf(cf, | |
| 1500 ngx_http_charset_filter_module); | |
| 1501 | |
| 1502 recode = mcf->recodes.elts; | |
| 1503 tables = mcf->tables.elts; | |
| 1504 charset = mcf->charsets.elts; | |
| 1505 | |
| 1506 for (i = 0; i < mcf->recodes.nelts; i++) { | |
| 1507 | |
| 1508 c = recode[i].src; | |
| 1509 | |
| 1510 for (t = 0; t < mcf->tables.nelts; t++) { | |
| 1511 | |
| 1512 if (c == tables[t].src && recode[i].dst == tables[t].dst) { | |
| 1513 goto next; | |
| 1514 } | |
| 1515 | |
| 1516 if (c == tables[t].dst && recode[i].dst == tables[t].src) { | |
| 1517 goto next; | |
| 1518 } | |
| 1519 } | |
| 1520 | |
| 1521 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 1588 | 1522 "no \"charset_map\" between the charsets \"%V\" and \"%V\"", |
| 1523 &charset[c].name, &charset[recode[i].dst].name); | |
| 529 | 1524 return NGX_ERROR; |
| 1525 | |
| 1526 next: | |
| 1527 continue; | |
| 1528 } | |
| 1529 | |
| 635 | 1530 |
| 1531 for (t = 0; t < mcf->tables.nelts; t++) { | |
| 1532 | |
| 1533 src = charset[tables[t].src].tables; | |
| 1534 | |
| 1535 if (src == NULL) { | |
| 1536 src = ngx_pcalloc(cf->pool, sizeof(u_char *) * mcf->charsets.nelts); | |
| 1537 if (src == NULL) { | |
| 1538 return NGX_ERROR; | |
| 1539 } | |
| 1540 | |
| 1541 charset[tables[t].src].tables = src; | |
| 1542 } | |
| 1543 | |
| 1544 dst = charset[tables[t].dst].tables; | |
| 1545 | |
| 1546 if (dst == NULL) { | |
| 1547 dst = ngx_pcalloc(cf->pool, sizeof(u_char *) * mcf->charsets.nelts); | |
| 1548 if (dst == NULL) { | |
| 1549 return NGX_ERROR; | |
| 1550 } | |
| 1551 | |
| 1552 charset[tables[t].dst].tables = dst; | |
| 1553 } | |
| 1554 | |
| 1555 src[tables[t].dst] = tables[t].src2dst; | |
| 1556 dst[tables[t].src] = tables[t].dst2src; | |
| 1557 } | |
| 1558 | |
| 681 | 1559 ngx_http_next_header_filter = ngx_http_top_header_filter; |
| 1560 ngx_http_top_header_filter = ngx_http_charset_header_filter; | |
| 1561 | |
| 1562 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
| 1563 ngx_http_top_body_filter = ngx_http_charset_body_filter; | |
| 1564 | |
| 529 | 1565 return NGX_OK; |
| 1566 } |