Mercurial > hg > nginx
annotate src/http/modules/ngx_http_xslt_filter_module.c @ 2184:274c0f3ea600
proxy_ssl_session_reuse
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Sun, 17 Aug 2008 17:47:52 +0000 |
| parents | 0ec936b0010a |
| children | fab3fa7339ff |
| rev | line source |
|---|---|
| 2139 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4 */ | |
| 5 | |
| 6 | |
| 7 #include <ngx_config.h> | |
| 8 #include <ngx_core.h> | |
| 9 #include <ngx_http.h> | |
| 10 | |
| 11 #include <libxml/parser.h> | |
| 12 #include <libxml/tree.h> | |
| 13 #include <libxslt/xslt.h> | |
| 14 #include <libxslt/xsltInternals.h> | |
| 15 #include <libxslt/transform.h> | |
| 16 #include <libxslt/xsltutils.h> | |
| 17 | |
| 18 | |
| 19 #ifndef NGX_HTTP_XSLT_REUSE_DTD | |
| 20 #define NGX_HTTP_XSLT_REUSE_DTD 1 | |
| 21 #endif | |
| 22 | |
| 23 | |
| 24 typedef struct { | |
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25 u_char *name; |
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26 void *data; |
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27 } ngx_http_xslt_file_t; |
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28 |
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29 |
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30 typedef struct { |
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31 ngx_array_t dtd_files; /* ngx_http_xslt_file_t */ |
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32 ngx_array_t sheet_files; /* ngx_http_xslt_file_t */ |
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33 } ngx_http_xslt_filter_main_conf_t; |
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34 |
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35 |
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36 typedef struct { |
| 2139 | 37 ngx_array_t *lengths; |
| 38 ngx_array_t *values; | |
| 39 } ngx_http_xslt_param_t; | |
| 40 | |
| 41 | |
| 42 typedef struct { | |
| 43 xsltStylesheetPtr stylesheet; | |
| 44 ngx_array_t params; /* ngx_http_xslt_param_t */ | |
| 45 } ngx_http_xslt_sheet_t; | |
| 46 | |
| 47 | |
| 48 typedef struct { | |
| 49 xmlDtdPtr dtd; | |
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50 ngx_array_t sheets; /* ngx_http_xslt_sheet_t */ |
| 2148 | 51 ngx_hash_t types; |
| 52 ngx_array_t *types_keys; | |
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53 } ngx_http_xslt_filter_loc_conf_t; |
| 2139 | 54 |
| 55 | |
| 56 typedef struct { | |
| 57 xmlDocPtr doc; | |
| 58 xmlParserCtxtPtr ctxt; | |
| 59 xmlSAXHandler *sax; | |
| 60 ngx_http_request_t *request; | |
| 61 ngx_array_t params; | |
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62 |
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63 ngx_uint_t done; /* unsigned done:1; */ |
| 2139 | 64 } ngx_http_xslt_filter_ctx_t; |
| 65 | |
| 66 | |
| 67 static ngx_int_t ngx_http_xslt_send(ngx_http_request_t *r, | |
| 68 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b); | |
| 69 static ngx_int_t ngx_http_xslt_filter_internal_error(ngx_http_request_t *r); | |
| 70 static ngx_int_t ngx_http_xslt_add_chunk(ngx_http_request_t *r, | |
| 71 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b); | |
| 72 | |
| 73 | |
| 74 static void ngx_http_xslt_sax_start_document(void *data); | |
| 75 static void ngx_http_xslt_sax_end_document(void *data); | |
| 76 static void ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name, | |
| 77 const xmlChar *externalId, const xmlChar *systemId); | |
| 78 static void ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
| 79 const xmlChar *externalId, const xmlChar *systemId); | |
| 80 static void ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name, | |
| 81 int type, const xmlChar *publicId, const xmlChar *systemId, | |
| 82 xmlChar *content); | |
| 83 static void ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem, | |
| 84 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue, | |
| 85 xmlEnumerationPtr tree); | |
| 86 static void ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name, | |
| 87 int type, xmlElementContentPtr content); | |
| 88 static void ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name, | |
| 89 const xmlChar *publicId, const xmlChar *systemId); | |
| 90 static void ngx_http_xslt_sax_unparsed_entity_decl(void *data, | |
| 91 const xmlChar *name, const xmlChar *publicId, const xmlChar *systemId, | |
| 92 const xmlChar *notationName); | |
| 93 static void ngx_http_xslt_sax_start_element(void *data, | |
| 94 const xmlChar *localname, const xmlChar *prefix, const xmlChar *URI, | |
| 95 int nb_namespaces, const xmlChar **namespaces, int nb_attributes, | |
| 96 int nb_defaulted, const xmlChar **attributes); | |
| 97 static void ngx_http_xslt_sax_end_element(void *data, | |
| 98 const xmlChar * localname ATTRIBUTE_UNUSED, | |
| 99 const xmlChar * prefix ATTRIBUTE_UNUSED, | |
| 100 const xmlChar * URI ATTRIBUTE_UNUSED); | |
| 101 static void ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len); | |
| 102 static void ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p, | |
| 103 int len); | |
| 104 static xmlEntityPtr ngx_http_xslt_sax_get_entity(void *data, | |
| 105 const xmlChar *name); | |
| 106 static xmlEntityPtr ngx_http_xslt_sax_get_parameter_entity(void *data, | |
| 107 const xmlChar *name); | |
| 108 static xmlParserInputPtr ngx_http_xslt_sax_resolve_entity(void *data, | |
| 109 const xmlChar *publicId, const xmlChar *systemId); | |
| 110 static void ngx_http_xslt_sax_reference(void *data, const xmlChar *name); | |
| 111 static void ngx_http_xslt_sax_comment(void *data, const xmlChar *value); | |
| 112 static void ngx_http_xslt_sax_processing_instruction(void *data, | |
| 113 const xmlChar *target, const xmlChar *pidata); | |
| 114 static int ngx_http_xslt_sax_is_standalone(void *data); | |
| 115 static int ngx_http_xslt_sax_has_internal_subset(void *data); | |
| 116 static int ngx_http_xslt_sax_has_external_subset(void *data); | |
| 117 static void ngx_cdecl ngx_http_xslt_sax_error(void *data, const char *msg, ...); | |
| 118 | |
| 119 | |
| 120 static ngx_buf_t *ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
| 121 ngx_http_xslt_filter_ctx_t *ctx); | |
| 122 static ngx_int_t ngx_http_xslt_params(ngx_http_request_t *r, | |
| 123 ngx_http_xslt_filter_ctx_t *ctx, ngx_array_t *params); | |
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124 static u_char *ngx_http_xslt_content_type(xsltStylesheetPtr s); |
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125 static u_char *ngx_http_xslt_encoding(xsltStylesheetPtr s); |
| 2139 | 126 static void ngx_http_xslt_cleanup(void *data); |
| 127 | |
| 128 static char *ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 129 void *conf); | |
| 130 static char *ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 131 void *conf); | |
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132 static void ngx_http_xslt_cleanup_dtd(void *data); |
| 2139 | 133 static void ngx_http_xslt_cleanup_stylesheet(void *data); |
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134 static void *ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf); |
| 2139 | 135 static void *ngx_http_xslt_filter_create_conf(ngx_conf_t *cf); |
| 136 static char *ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, | |
| 137 void *child); | |
| 138 static ngx_int_t ngx_http_xslt_filter_init(ngx_conf_t *cf); | |
| 139 | |
| 140 | |
| 141 ngx_str_t ngx_http_xslt_default_types[] = { | |
| 142 ngx_string("text/xml"), | |
| 143 ngx_null_string | |
| 144 }; | |
| 145 | |
| 146 | |
| 147 static ngx_command_t ngx_http_xslt_filter_commands[] = { | |
| 148 | |
| 149 { ngx_string("xml_entities"), | |
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150 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| 2139 | 151 ngx_http_xslt_entities, |
| 152 NGX_HTTP_LOC_CONF_OFFSET, | |
| 153 0, | |
| 154 NULL }, | |
| 155 | |
| 156 { ngx_string("xslt_stylesheet"), | |
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157 NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| 2139 | 158 ngx_http_xslt_stylesheet, |
| 159 NGX_HTTP_LOC_CONF_OFFSET, | |
| 160 0, | |
| 161 NULL }, | |
| 162 | |
| 163 { ngx_string("xslt_types"), | |
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164 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| 2139 | 165 ngx_http_types_slot, |
| 166 NGX_HTTP_LOC_CONF_OFFSET, | |
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167 offsetof(ngx_http_xslt_filter_loc_conf_t, types_keys), |
| 2139 | 168 &ngx_http_xslt_default_types[0] }, |
| 169 | |
| 170 ngx_null_command | |
| 171 }; | |
| 172 | |
| 173 | |
| 174 static ngx_http_module_t ngx_http_xslt_filter_module_ctx = { | |
| 175 NULL, /* preconfiguration */ | |
| 176 ngx_http_xslt_filter_init, /* postconfiguration */ | |
| 177 | |
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178 ngx_http_xslt_filter_create_main_conf, /* create main configuration */ |
| 2139 | 179 NULL, /* init main configuration */ |
| 180 | |
| 181 NULL, /* create server configuration */ | |
| 182 NULL, /* merge server configuration */ | |
| 183 | |
| 184 ngx_http_xslt_filter_create_conf, /* create location configuration */ | |
| 185 ngx_http_xslt_filter_merge_conf /* merge location configuration */ | |
| 186 }; | |
| 187 | |
| 188 | |
| 189 ngx_module_t ngx_http_xslt_filter_module = { | |
| 190 NGX_MODULE_V1, | |
| 191 &ngx_http_xslt_filter_module_ctx, /* module context */ | |
| 192 ngx_http_xslt_filter_commands, /* module directives */ | |
| 193 NGX_HTTP_MODULE, /* module type */ | |
| 194 NULL, /* init master */ | |
| 195 NULL, /* init module */ | |
| 196 NULL, /* init process */ | |
| 197 NULL, /* init thread */ | |
| 198 NULL, /* exit thread */ | |
| 199 NULL, /* exit process */ | |
| 200 NULL, /* exit master */ | |
| 201 NGX_MODULE_V1_PADDING | |
| 202 }; | |
| 203 | |
| 204 | |
| 205 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; | |
| 206 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; | |
| 207 | |
| 208 | |
| 209 static ngx_int_t | |
| 210 ngx_http_xslt_header_filter(ngx_http_request_t *r) | |
| 211 { | |
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212 ngx_http_xslt_filter_ctx_t *ctx; |
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213 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 214 |
| 215 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 216 "xslt filter header"); | |
| 217 | |
| 218 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) { | |
| 219 return ngx_http_next_header_filter(r); | |
| 220 } | |
| 221 | |
| 222 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 223 | |
| 224 if (conf->sheets.nelts == 0 | |
| 2148 | 225 || ngx_http_test_content_type(r, &conf->types) == NULL) |
| 2139 | 226 { |
| 227 return ngx_http_next_header_filter(r); | |
| 228 } | |
| 229 | |
| 230 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); | |
| 231 | |
| 232 if (ctx) { | |
| 233 return ngx_http_next_header_filter(r); | |
| 234 } | |
| 235 | |
| 236 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_xslt_filter_ctx_t)); | |
| 237 if (ctx == NULL) { | |
| 238 return NGX_ERROR; | |
| 239 } | |
| 240 | |
| 241 ngx_http_set_ctx(r, ctx, ngx_http_xslt_filter_module); | |
| 242 | |
| 243 r->main_filter_need_in_memory = 1; | |
| 244 | |
| 245 return NGX_OK; | |
| 246 } | |
| 247 | |
| 248 | |
| 249 static ngx_int_t | |
| 250 ngx_http_xslt_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
| 251 { | |
| 252 ngx_chain_t *cl; | |
| 253 ngx_http_xslt_filter_ctx_t *ctx; | |
| 254 | |
| 255 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 256 "xslt filter body"); | |
| 257 | |
| 258 if (in == NULL) { | |
| 259 return ngx_http_next_body_filter(r, in); | |
| 260 } | |
| 261 | |
| 262 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); | |
| 263 | |
| 264 if (ctx == NULL || ctx->done) { | |
| 265 return ngx_http_next_body_filter(r, in); | |
| 266 } | |
| 267 | |
| 268 for (cl = in; cl; cl = cl->next) { | |
| 269 | |
| 270 if (ngx_http_xslt_add_chunk(r, ctx, cl->buf) != NGX_OK) { | |
| 271 | |
| 272 if (ctx->ctxt->myDoc){ | |
| 273 | |
| 274 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 275 ctx->ctxt->myDoc->extSubset = NULL; | |
| 276 #endif | |
| 277 xmlFreeDoc(ctx->ctxt->myDoc); | |
| 278 } | |
| 279 | |
| 280 xmlFreeParserCtxt(ctx->ctxt); | |
| 281 | |
| 282 return ngx_http_xslt_send(r, ctx, NULL); | |
| 283 } | |
| 284 | |
| 285 if (cl->buf->last_buf) { | |
| 286 | |
| 287 ctx->doc = ctx->ctxt->myDoc; | |
| 288 | |
| 289 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 290 ctx->doc->extSubset = NULL; | |
| 291 #endif | |
| 292 | |
| 293 xmlFreeParserCtxt(ctx->ctxt); | |
| 294 | |
| 295 if (ctx->ctxt->wellFormed) { | |
| 296 return ngx_http_xslt_send(r, ctx, | |
| 297 ngx_http_xslt_apply_stylesheet(r, ctx)); | |
| 298 } | |
| 299 | |
| 300 xmlFreeDoc(ctx->doc); | |
| 301 | |
| 302 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 303 "not well formed XML document"); | |
| 304 | |
| 305 return ngx_http_xslt_send(r, ctx, NULL); | |
| 306 } | |
| 307 } | |
| 308 | |
| 309 return NGX_OK; | |
| 310 } | |
| 311 | |
| 312 | |
| 313 static ngx_int_t | |
| 314 ngx_http_xslt_send(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 315 ngx_buf_t *b) | |
| 316 { | |
| 317 ngx_int_t rc; | |
| 318 ngx_chain_t out; | |
| 319 ngx_pool_cleanup_t *cln; | |
| 320 | |
| 321 ctx->done = 1; | |
| 322 | |
| 323 if (b == NULL) { | |
| 324 return ngx_http_xslt_filter_internal_error(r); | |
| 325 } | |
| 326 | |
| 327 cln = ngx_pool_cleanup_add(r->pool, 0); | |
| 328 | |
| 329 if (cln == NULL) { | |
| 330 ngx_free(b->pos); | |
| 331 return ngx_http_special_response_handler(r, | |
| 332 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 333 } | |
| 334 | |
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335 if (r == r->main) { |
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336 r->headers_out.content_length_n = b->last - b->pos; |
| 2139 | 337 |
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338 if (r->headers_out.content_length) { |
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339 r->headers_out.content_length->hash = 0; |
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340 r->headers_out.content_length = NULL; |
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341 } |
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342 |
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343 ngx_http_clear_last_modified(r); |
| 2139 | 344 } |
| 345 | |
| 346 rc = ngx_http_next_header_filter(r); | |
| 347 | |
| 348 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
| 349 ngx_free(b->pos); | |
| 350 return rc; | |
| 351 } | |
| 352 | |
| 353 cln->handler = ngx_http_xslt_cleanup; | |
| 354 cln->data = b->pos; | |
| 355 | |
| 356 out.buf = b; | |
| 357 out.next = NULL; | |
| 358 | |
| 359 return ngx_http_next_body_filter(r, &out); | |
| 360 } | |
| 361 | |
| 362 | |
| 363 static ngx_int_t | |
| 364 ngx_http_xslt_filter_internal_error(ngx_http_request_t *r) | |
| 365 { | |
| 366 ngx_int_t rc; | |
| 367 | |
| 368 /* clear the modules contexts */ | |
| 369 ngx_memzero(r->ctx, sizeof(void *) * ngx_http_max_module); | |
| 370 | |
| 371 rc = ngx_http_special_response_handler(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 372 | |
| 373 /* NGX_ERROR resets any pending data */ | |
| 374 | |
| 375 return (rc == NGX_OK) ? NGX_ERROR : rc; | |
| 376 } | |
| 377 | |
| 378 | |
| 379 static ngx_int_t | |
| 380 ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 381 ngx_buf_t *b) | |
| 382 { | |
| 383 int err; | |
| 384 xmlSAXHandler *sax; | |
| 385 xmlParserCtxtPtr ctxt; | |
| 386 | |
| 387 if (ctx->ctxt == NULL) { | |
| 388 | |
| 389 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL); | |
| 390 if (ctxt == NULL) { | |
| 391 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 392 "xmlCreatePushParserCtxt() failed"); | |
| 393 return NGX_ERROR; | |
| 394 } | |
| 395 | |
| 396 ctx->sax = ngx_palloc(r->pool, sizeof(xmlSAXHandler)); | |
| 397 if (ctx->sax == NULL) { | |
| 398 return NGX_ERROR; | |
| 399 } | |
| 400 | |
| 401 sax = ctxt->sax; | |
| 402 | |
| 403 ngx_memcpy(ctx->sax, sax, sizeof(xmlSAXHandler)); | |
| 404 | |
| 405 sax->startDocument = ngx_http_xslt_sax_start_document; | |
| 406 sax->endDocument = ngx_http_xslt_sax_end_document; | |
| 407 | |
| 408 sax->internalSubset = ngx_http_xslt_sax_internal_subset; | |
| 409 sax->externalSubset = ngx_http_xslt_sax_external_subset; | |
| 410 sax->entityDecl = ngx_http_xslt_sax_entity_decl; | |
| 411 sax->attributeDecl = ngx_http_xslt_sax_attribute_decl; | |
| 412 sax->elementDecl = ngx_http_xslt_sax_element_decl; | |
| 413 sax->notationDecl = ngx_http_xslt_sax_notation_decl; | |
| 414 sax->unparsedEntityDecl = ngx_http_xslt_sax_unparsed_entity_decl; | |
| 415 sax->setDocumentLocator = NULL; | |
| 416 | |
| 417 sax->startElementNs = ngx_http_xslt_sax_start_element; | |
| 418 sax->endElementNs = ngx_http_xslt_sax_end_element; | |
| 419 | |
| 420 sax->characters = ngx_http_xslt_sax_characters; | |
| 421 sax->ignorableWhitespace = ngx_http_xslt_sax_characters; | |
| 422 sax->cdataBlock = ngx_http_xslt_sax_cdata_block; | |
| 423 sax->getEntity = ngx_http_xslt_sax_get_entity; | |
| 424 sax->resolveEntity = ngx_http_xslt_sax_resolve_entity; | |
| 425 sax->getParameterEntity = ngx_http_xslt_sax_get_parameter_entity; | |
| 426 sax->reference = ngx_http_xslt_sax_reference; | |
| 427 sax->comment = ngx_http_xslt_sax_comment; | |
| 428 sax->processingInstruction = ngx_http_xslt_sax_processing_instruction; | |
| 429 | |
| 430 sax->isStandalone = ngx_http_xslt_sax_is_standalone; | |
| 431 sax->hasInternalSubset = ngx_http_xslt_sax_has_internal_subset; | |
| 432 sax->hasExternalSubset = ngx_http_xslt_sax_has_external_subset; | |
| 433 | |
| 434 sax->warning = NULL; | |
| 435 sax->error = ngx_http_xslt_sax_error; | |
| 436 sax->fatalError = ngx_http_xslt_sax_error; | |
| 437 | |
| 438 ctxt->userData = ctx; | |
| 439 | |
| 440 ctxt->replaceEntities = 1; | |
| 441 ctxt->loadsubset = 1; | |
| 442 | |
| 443 ctx->ctxt = ctxt; | |
| 444 ctx->request = r; | |
| 445 } | |
| 446 | |
| 447 err = xmlParseChunk(ctx->ctxt, (char *) b->pos, | |
| 448 (int) (b->last - b->pos), b->last_buf); | |
| 449 | |
| 450 if (err == 0) { | |
| 451 b->pos = b->last; | |
| 452 return NGX_OK; | |
| 453 } | |
| 454 | |
| 455 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 456 "xmlParseChunk() failed, error:%d", err); | |
| 457 | |
| 458 return NGX_ERROR; | |
| 459 } | |
| 460 | |
| 461 | |
| 462 static void | |
| 463 ngx_http_xslt_sax_start_document(void *data) | |
| 464 { | |
| 465 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 466 | |
| 467 ctx->sax->startDocument(ctx->ctxt); | |
| 468 } | |
| 469 | |
| 470 | |
| 471 static void | |
| 472 ngx_http_xslt_sax_end_document(void *data) | |
| 473 { | |
| 474 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 475 | |
| 476 ctx->sax->endDocument(ctx->ctxt); | |
| 477 } | |
| 478 | |
| 479 | |
| 480 static void | |
| 481 ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name, | |
| 482 const xmlChar *externalId, const xmlChar *systemId) | |
| 483 { | |
| 484 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 485 | |
| 486 ctx->sax->internalSubset(ctx->ctxt, name, externalId, systemId); | |
| 487 } | |
| 488 | |
| 489 | |
| 490 static void | |
| 491 ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
| 492 const xmlChar *externalId, const xmlChar *systemId) | |
| 493 { | |
| 494 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 495 | |
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496 xmlDocPtr doc; |
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497 xmlDtdPtr dtd; |
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498 ngx_http_request_t *r; |
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499 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 500 |
| 501 r = ctx->request; | |
| 502 | |
| 503 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 504 | |
| 505 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 506 "xslt filter extSubset: \"%s\" \"%s\" \"%s\"", | |
| 507 name ? name : (xmlChar *) "", | |
| 508 externalId ? externalId : (xmlChar *) "", | |
| 509 systemId ? systemId : (xmlChar *) ""); | |
| 510 | |
| 511 doc = ctx->ctxt->myDoc; | |
| 512 | |
| 513 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 514 | |
| 515 dtd = conf->dtd; | |
| 516 | |
| 517 #else | |
| 518 | |
| 519 dtd = xmlCopyDtd(conf->dtd); | |
| 520 if (dtd == NULL) { | |
| 521 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 522 "xmlCopyDtd() failed"); | |
| 523 return; | |
| 524 } | |
| 525 | |
| 526 if (doc->children == NULL) { | |
| 527 xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd); | |
| 528 | |
| 529 } else { | |
| 530 xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd); | |
| 531 } | |
| 532 | |
| 533 #endif | |
| 534 | |
| 535 doc->extSubset = dtd; | |
| 536 } | |
| 537 | |
| 538 | |
| 539 static void | |
| 540 ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name, int type, | |
| 541 const xmlChar *publicId, const xmlChar *systemId, xmlChar *content) | |
| 542 { | |
| 543 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 544 | |
| 545 ctx->sax->entityDecl(ctx->ctxt, name, type, publicId, systemId, content); | |
| 546 } | |
| 547 | |
| 548 | |
| 549 static void | |
| 550 ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem, | |
| 551 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue, | |
| 552 xmlEnumerationPtr tree) | |
| 553 { | |
| 554 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 555 | |
| 556 ctx->sax->attributeDecl(ctx->ctxt, elem, fullname, type, def, defaultValue, | |
| 557 tree); | |
| 558 } | |
| 559 | |
| 560 | |
| 561 static void | |
| 562 ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name, int type, | |
| 563 xmlElementContentPtr content) | |
| 564 { | |
| 565 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 566 | |
| 567 ctx->sax->elementDecl(ctx->ctxt, name, type, content); | |
| 568 } | |
| 569 | |
| 570 | |
| 571 static void | |
| 572 ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name, | |
| 573 const xmlChar *publicId, const xmlChar *systemId) | |
| 574 { | |
| 575 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 576 | |
| 577 ctx->sax->notationDecl(ctx->ctxt, name, publicId, systemId); | |
| 578 } | |
| 579 | |
| 580 | |
| 581 static void | |
| 582 ngx_http_xslt_sax_unparsed_entity_decl(void *data, const xmlChar *name, | |
| 583 const xmlChar *publicId, const xmlChar *systemId, | |
| 584 const xmlChar *notationName) | |
| 585 { | |
| 586 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 587 | |
| 588 ctx->sax->unparsedEntityDecl(ctx->ctxt, name, publicId, systemId, | |
| 589 notationName); | |
| 590 } | |
| 591 | |
| 592 | |
| 593 static void | |
| 594 ngx_http_xslt_sax_start_element(void *data, const xmlChar *localname, | |
| 595 const xmlChar *prefix, const xmlChar *URI, int nb_namespaces, | |
| 596 const xmlChar **namespaces, int nb_attributes, int nb_defaulted, | |
| 597 const xmlChar **attributes) | |
| 598 { | |
| 599 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 600 | |
| 601 ctx->sax->startElementNs(ctx->ctxt, localname, prefix, URI, nb_namespaces, | |
| 602 namespaces, nb_attributes, nb_defaulted, attributes); | |
| 603 } | |
| 604 | |
| 605 | |
| 606 static void | |
| 607 ngx_http_xslt_sax_end_element(void *data, | |
| 608 const xmlChar * localname ATTRIBUTE_UNUSED, | |
| 609 const xmlChar * prefix ATTRIBUTE_UNUSED, | |
| 610 const xmlChar * URI ATTRIBUTE_UNUSED) | |
| 611 { | |
| 612 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 613 | |
| 614 ctx->sax->endElementNs(ctx->ctxt, localname, prefix, URI); | |
| 615 } | |
| 616 | |
| 617 | |
| 618 static void | |
| 619 ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len) | |
| 620 { | |
| 621 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 622 | |
| 623 ctx->sax->characters(ctx->ctxt, p, len); | |
| 624 } | |
| 625 | |
| 626 | |
| 627 static void | |
| 628 ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p, int len) | |
| 629 { | |
| 630 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 631 | |
| 632 ctx->sax->cdataBlock(ctx->ctxt, p, len); | |
| 633 } | |
| 634 | |
| 635 | |
| 636 static xmlEntityPtr | |
| 637 ngx_http_xslt_sax_get_entity(void *data, const xmlChar *name) | |
| 638 { | |
| 639 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 640 | |
| 641 return ctx->sax->getEntity(ctx->ctxt, name); | |
| 642 } | |
| 643 | |
| 644 | |
| 645 static xmlEntityPtr | |
| 646 ngx_http_xslt_sax_get_parameter_entity(void *data, const xmlChar *name) | |
| 647 { | |
| 648 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 649 | |
| 650 return ctx->sax->getParameterEntity(ctx->ctxt, name); | |
| 651 } | |
| 652 | |
| 653 | |
| 654 static xmlParserInputPtr | |
| 655 ngx_http_xslt_sax_resolve_entity(void *data, const xmlChar *publicId, | |
| 656 const xmlChar *systemId) | |
| 657 { | |
| 658 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 659 | |
| 660 return ctx->sax->resolveEntity(ctx->ctxt, publicId, systemId); | |
| 661 } | |
| 662 | |
| 663 | |
| 664 static void | |
| 665 ngx_http_xslt_sax_reference(void *data, const xmlChar *name) | |
| 666 { | |
| 667 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 668 | |
| 669 ctx->sax->reference(ctx->ctxt, name); | |
| 670 } | |
| 671 | |
| 672 | |
| 673 static void | |
| 674 ngx_http_xslt_sax_comment(void *data, const xmlChar *value) | |
| 675 { | |
| 676 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 677 | |
| 678 ctx->sax->comment(ctx->ctxt, value); | |
| 679 } | |
| 680 | |
| 681 | |
| 682 static void | |
| 683 ngx_http_xslt_sax_processing_instruction(void *data, const xmlChar *target, | |
| 684 const xmlChar *pidata) | |
| 685 { | |
| 686 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 687 | |
| 688 ctx->sax->processingInstruction(ctx->ctxt, target, pidata); | |
| 689 } | |
| 690 | |
| 691 | |
| 692 static int | |
| 693 ngx_http_xslt_sax_is_standalone(void *data) | |
| 694 { | |
| 695 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 696 | |
| 697 return ctx->sax->isStandalone(ctx->ctxt); | |
| 698 } | |
| 699 | |
| 700 | |
| 701 static int | |
| 702 ngx_http_xslt_sax_has_internal_subset(void *data) | |
| 703 { | |
| 704 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 705 | |
| 706 return ctx->sax->hasInternalSubset(ctx->ctxt); | |
| 707 } | |
| 708 | |
| 709 | |
| 710 static int | |
| 711 ngx_http_xslt_sax_has_external_subset(void *data) | |
| 712 { | |
| 713 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 714 | |
| 715 return ctx->sax->hasExternalSubset(ctx->ctxt); | |
| 716 } | |
| 717 | |
| 718 | |
| 719 static void ngx_cdecl | |
| 720 ngx_http_xslt_sax_error(void *data, const char *msg, ...) | |
| 721 { | |
| 722 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 723 | |
| 724 size_t n; | |
| 725 va_list args; | |
| 726 u_char buf[NGX_MAX_ERROR_STR]; | |
| 727 | |
| 728 buf[0] = '\0'; | |
| 729 | |
| 730 va_start(args, msg); | |
| 731 n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args); | |
| 732 va_end(args); | |
| 733 | |
| 734 while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ } | |
| 735 | |
| 736 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
| 737 "libxml2 error: \"%*s\"", n, buf); | |
| 738 } | |
| 739 | |
| 740 | |
| 741 static ngx_buf_t * | |
| 742 ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
| 743 ngx_http_xslt_filter_ctx_t *ctx) | |
| 744 { | |
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745 int len, rc, doc_type; |
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746 u_char *type, *encoding; |
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747 ngx_buf_t *b; |
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748 ngx_uint_t i; |
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749 xmlChar *buf; |
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750 xmlDocPtr doc, res; |
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751 ngx_http_xslt_sheet_t *sheet; |
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752 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 753 |
| 754 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 755 sheet = conf->sheets.elts; | |
| 756 doc = ctx->doc; | |
| 757 | |
| 758 /* preallocate array for 4 params */ | |
| 759 | |
| 760 if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *)) | |
| 761 != NGX_OK) | |
| 762 { | |
| 763 xmlFreeDoc(doc); | |
| 764 return NULL; | |
| 765 } | |
| 766 | |
| 767 for (i = 0; i < conf->sheets.nelts; i++) { | |
| 768 | |
| 769 if (ngx_http_xslt_params(r, ctx, &sheet[i].params) != NGX_OK) { | |
| 770 xmlFreeDoc(doc); | |
| 771 return NULL; | |
| 772 } | |
| 773 | |
| 774 res = xsltApplyStylesheet(sheet[i].stylesheet, doc, ctx->params.elts); | |
| 775 | |
| 776 xmlFreeDoc(doc); | |
| 777 | |
| 778 if (res == NULL) { | |
| 779 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 780 "xsltApplyStylesheet() failed"); | |
| 781 return NULL; | |
| 782 } | |
| 783 | |
| 784 doc = res; | |
| 785 | |
| 786 /* reset array elements */ | |
| 787 ctx->params.nelts = 0; | |
| 788 } | |
| 789 | |
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790 /* there must be at least one stylesheet */ |
| 2139 | 791 |
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792 if (r == r->main) { |
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793 type = ngx_http_xslt_content_type(sheet[i - 1].stylesheet); |
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794 |
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795 } else { |
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796 type = NULL; |
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797 } |
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798 |
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799 encoding = ngx_http_xslt_encoding(sheet[i - 1].stylesheet); |
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800 doc_type = doc->type; |
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801 |
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802 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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803 "xslt filter type: %d t:%s e:%s", |
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804 doc_type, type ? type : (u_char *) "(null)", |
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805 encoding ? encoding : (u_char *) "(null)"); |
| 2139 | 806 |
| 807 rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet); | |
| 808 | |
| 809 xmlFreeDoc(doc); | |
| 810 | |
| 811 if (rc != 0) { | |
| 812 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 813 "xsltSaveResultToString() failed"); | |
| 814 return NULL; | |
| 815 } | |
| 816 | |
| 817 if (len == 0) { | |
| 818 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 819 "xsltSaveResultToString() returned zero-length result"); | |
| 820 return NULL; | |
| 821 } | |
| 822 | |
| 823 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
| 824 if (b == NULL) { | |
| 825 ngx_free(buf); | |
| 826 return NULL; | |
| 827 } | |
| 828 | |
| 829 b->pos = buf; | |
| 830 b->last = buf + len; | |
| 831 b->memory = 1; | |
| 832 b->last_buf = 1; | |
| 833 | |
|
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834 if (encoding) { |
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835 r->headers_out.charset.len = ngx_strlen(encoding); |
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836 r->headers_out.charset.data = encoding; |
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837 } |
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838 |
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839 if (r != r->main) { |
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840 return b; |
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841 } |
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842 |
|
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843 if (type) { |
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844 len = ngx_strlen(type); |
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845 |
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846 r->headers_out.content_type_len = len; |
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847 r->headers_out.content_type.len = len; |
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848 r->headers_out.content_type.data = type; |
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849 |
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850 } else if (doc_type == XML_HTML_DOCUMENT_NODE) { |
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851 |
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852 r->headers_out.content_type_len = sizeof("text/html") - 1; |
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853 r->headers_out.content_type.len = sizeof("text/html") - 1; |
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854 r->headers_out.content_type.data = (u_char *) "text/html"; |
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855 } |
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856 |
| 2139 | 857 return b; |
| 858 } | |
| 859 | |
| 860 | |
| 861 static ngx_int_t | |
| 862 ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 863 ngx_array_t *params) | |
| 864 { | |
| 865 u_char *p, *last, *value, *dst, *src, **s; | |
| 866 size_t len; | |
| 867 ngx_uint_t i; | |
| 868 ngx_str_t string; | |
| 869 ngx_http_xslt_param_t *param; | |
| 870 | |
| 871 param = params->elts; | |
| 872 | |
| 873 for (i = 0; i < params->nelts; i++) { | |
| 874 | |
| 875 if (ngx_http_script_run(r, &string, param[i].lengths->elts, 1, | |
| 876 param[i].values->elts) | |
| 877 == NULL) | |
| 878 { | |
| 879 return NGX_ERROR; | |
| 880 } | |
| 881 | |
| 882 last = string.data + string.len - 1; | |
| 883 *last = '\0'; | |
| 884 | |
| 885 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 886 "xslt filter param: \"%s\"", string.data); | |
| 887 | |
| 888 p = string.data; | |
| 889 | |
| 890 while (p && *p) { | |
| 891 | |
| 892 value = p; | |
| 893 p = (u_char *) ngx_strchr(p, '='); | |
| 894 if (p == NULL) { | |
| 895 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 896 "invalid libxslt parameter \"%s\"", value); | |
| 897 return NGX_ERROR; | |
| 898 } | |
| 899 *p++ = '\0'; | |
| 900 | |
| 901 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 902 "xslt filter param name: \"%s\"", value); | |
| 903 | |
| 904 s = ngx_array_push(&ctx->params); | |
| 905 if (s == NULL) { | |
| 906 return NGX_ERROR; | |
| 907 } | |
| 908 | |
| 909 *s = value; | |
| 910 | |
| 911 value = p; | |
| 912 p = (u_char *) ngx_strchr(p, ':'); | |
| 913 | |
| 914 if (p) { | |
| 915 len = p - value; | |
| 916 *p++ = '\0'; | |
| 917 | |
| 918 } else { | |
| 919 len = last - value; | |
| 920 } | |
| 921 | |
| 922 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 923 "xslt filter param value: \"%s\"", value); | |
| 924 | |
| 925 dst = value; | |
| 926 src = value; | |
| 927 | |
| 928 ngx_unescape_uri(&dst, &src, len, 0); | |
| 929 | |
| 930 *dst = '\0'; | |
| 931 | |
| 932 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 933 "xslt filter param unescaped: \"%s\"", value); | |
| 934 | |
| 935 s = ngx_array_push(&ctx->params); | |
| 936 if (s == NULL) { | |
| 937 return NGX_ERROR; | |
| 938 } | |
| 939 | |
| 940 *s = value; | |
| 941 } | |
| 942 } | |
| 943 | |
| 944 s = ngx_array_push(&ctx->params); | |
| 945 if (s == NULL) { | |
| 946 return NGX_ERROR; | |
| 947 } | |
| 948 | |
| 949 *s = NULL; | |
| 950 | |
| 951 return NGX_OK; | |
| 952 } | |
| 953 | |
| 954 | |
|
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955 static u_char * |
|
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956 ngx_http_xslt_content_type(xsltStylesheetPtr s) |
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957 { |
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958 u_char *type; |
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959 |
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960 if (s->mediaType) { |
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961 return s->mediaType; |
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962 } |
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963 |
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964 for (s = s->imports; s; s = s->next) { |
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965 |
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966 type = ngx_http_xslt_content_type(s); |
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967 |
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968 if (type) { |
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969 return type; |
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970 } |
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971 } |
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972 |
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973 return NULL; |
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974 } |
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975 |
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976 |
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977 static u_char * |
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978 ngx_http_xslt_encoding(xsltStylesheetPtr s) |
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979 { |
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980 u_char *encoding; |
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981 |
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982 if (s->encoding) { |
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983 return s->encoding; |
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984 } |
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985 |
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986 for (s = s->imports; s; s = s->next) { |
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987 |
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988 encoding = ngx_http_xslt_encoding(s); |
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989 |
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990 if (encoding) { |
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991 return encoding; |
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992 } |
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993 } |
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|
994 |
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995 return NULL; |
|
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|
996 } |
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|
997 |
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998 |
| 2139 | 999 static void |
| 1000 ngx_http_xslt_cleanup(void *data) | |
| 1001 { | |
| 1002 ngx_free(data); | |
| 1003 } | |
| 1004 | |
| 1005 | |
| 1006 static char * | |
| 1007 ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 1008 { | |
|
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1009 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
| 2139 | 1010 |
|
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1011 ngx_str_t *value; |
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1012 ngx_uint_t i; |
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1013 ngx_pool_cleanup_t *cln; |
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1014 ngx_http_xslt_file_t *file; |
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1015 ngx_http_xslt_filter_main_conf_t *xmcf; |
| 2139 | 1016 |
| 1017 if (xlcf->dtd) { | |
| 1018 return "is duplicate"; | |
| 1019 } | |
| 1020 | |
| 1021 value = cf->args->elts; | |
| 1022 | |
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1023 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); |
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1024 |
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1025 file = xmcf->dtd_files.elts; |
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1026 for (i = 0; i < xmcf->dtd_files.nelts; i++) { |
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1027 if (ngx_strcmp(file[i].name, &value[1].data) == 0) { |
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1028 xlcf->dtd = file[i].data; |
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1029 return NGX_CONF_OK; |
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1030 } |
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1031 } |
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1032 |
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1033 cln = ngx_pool_cleanup_add(cf->pool, 0); |
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1034 if (cln == NULL) { |
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1035 return NGX_CONF_ERROR; |
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1036 } |
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|
1037 |
| 2139 | 1038 xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data); |
| 1039 | |
| 1040 if (xlcf->dtd == NULL) { | |
| 1041 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed"); | |
| 1042 return NGX_CONF_ERROR; | |
| 1043 } | |
| 1044 | |
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1045 cln->handler = ngx_http_xslt_cleanup_dtd; |
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1046 cln->data = xlcf->dtd; |
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1047 |
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1048 file = ngx_array_push(&xmcf->dtd_files); |
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1049 if (file == NULL) { |
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1050 return NGX_CONF_ERROR; |
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1051 } |
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1052 |
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1053 file->name = value[1].data; |
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1054 file->data = xlcf->dtd; |
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1055 |
| 2139 | 1056 return NGX_CONF_OK; |
| 1057 } | |
| 1058 | |
| 1059 | |
| 1060 | |
| 1061 static char * | |
| 1062 ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 1063 { | |
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1064 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
| 2139 | 1065 |
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1066 ngx_str_t *value; |
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1067 ngx_uint_t i, n; |
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1068 ngx_pool_cleanup_t *cln; |
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1069 ngx_http_xslt_file_t *file; |
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1070 ngx_http_xslt_sheet_t *sheet; |
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1071 ngx_http_xslt_param_t *param; |
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1072 ngx_http_script_compile_t sc; |
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1073 ngx_http_xslt_filter_main_conf_t *xmcf; |
| 2139 | 1074 |
| 1075 value = cf->args->elts; | |
| 1076 | |
| 1077 if (xlcf->sheets.elts == NULL) { | |
| 1078 if (ngx_array_init(&xlcf->sheets, cf->pool, 1, | |
| 1079 sizeof(ngx_http_xslt_sheet_t)) | |
| 1080 != NGX_OK) | |
| 1081 { | |
| 1082 return NGX_CONF_ERROR; | |
| 1083 } | |
| 1084 } | |
| 1085 | |
| 1086 sheet = ngx_array_push(&xlcf->sheets); | |
| 1087 if (sheet == NULL) { | |
| 1088 return NGX_CONF_ERROR; | |
| 1089 } | |
| 1090 | |
| 1091 ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t)); | |
| 1092 | |
| 1093 if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) { | |
| 1094 return NGX_CONF_ERROR; | |
| 1095 } | |
| 1096 | |
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1097 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); |
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1098 |
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1099 file = xmcf->sheet_files.elts; |
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1100 for (i = 0; i < xmcf->sheet_files.nelts; i++) { |
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1101 if (ngx_strcmp(file[i].name, &value[1].data) == 0) { |
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1102 sheet->stylesheet = file[i].data; |
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1103 goto found; |
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1104 } |
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1105 } |
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1106 |
| 2139 | 1107 cln = ngx_pool_cleanup_add(cf->pool, 0); |
| 1108 if (cln == NULL) { | |
| 1109 return NGX_CONF_ERROR; | |
| 1110 } | |
| 1111 | |
| 1112 sheet->stylesheet = xsltParseStylesheetFile(value[1].data); | |
| 1113 if (sheet->stylesheet == NULL) { | |
| 1114 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, | |
| 1115 "xsltParseStylesheetFile(\"%s\") failed", | |
| 1116 value[1].data); | |
| 1117 return NGX_CONF_ERROR; | |
| 1118 } | |
| 1119 | |
| 1120 cln->handler = ngx_http_xslt_cleanup_stylesheet; | |
| 1121 cln->data = sheet->stylesheet; | |
| 1122 | |
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1123 file = ngx_array_push(&xmcf->sheet_files); |
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1124 if (file == NULL) { |
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1125 return NGX_CONF_ERROR; |
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1126 } |
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1127 |
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1128 file->name = value[1].data; |
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1129 file->data = sheet->stylesheet; |
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1130 |
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1131 found: |
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1132 |
| 2139 | 1133 n = cf->args->nelts; |
| 1134 | |
| 1135 if (n == 2) { | |
| 1136 return NGX_CONF_OK; | |
| 1137 } | |
| 1138 | |
| 1139 if (ngx_array_init(&sheet->params, cf->pool, n - 2, | |
| 1140 sizeof(ngx_http_xslt_param_t)) | |
| 1141 != NGX_OK) | |
| 1142 { | |
| 1143 return NGX_CONF_ERROR; | |
| 1144 } | |
| 1145 | |
| 1146 for (i = 2; i < n; i++) { | |
| 1147 | |
| 1148 param = ngx_array_push(&sheet->params); | |
| 1149 if (param == NULL) { | |
| 1150 return NGX_CONF_ERROR; | |
| 1151 } | |
| 1152 | |
| 1153 param->lengths = NULL; | |
| 1154 param->values = NULL; | |
| 1155 | |
| 1156 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 1157 | |
| 1158 sc.cf = cf; | |
| 1159 sc.source = &value[i]; | |
| 1160 sc.lengths = ¶m->lengths; | |
| 1161 sc.values = ¶m->values; | |
| 1162 sc.variables = ngx_http_script_variables_count(&value[i]); | |
| 1163 sc.complete_lengths = 1; | |
| 1164 sc.complete_values = 1; | |
| 1165 | |
| 1166 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 1167 return NGX_CONF_ERROR; | |
| 1168 } | |
| 1169 } | |
| 1170 | |
| 1171 return NGX_CONF_OK; | |
| 1172 } | |
| 1173 | |
| 1174 | |
| 1175 static void | |
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1176 ngx_http_xslt_cleanup_dtd(void *data) |
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1177 { |
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1178 xmlFreeDtd(data); |
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1179 } |
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1180 |
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1181 |
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1182 static void |
| 2139 | 1183 ngx_http_xslt_cleanup_stylesheet(void *data) |
| 1184 { | |
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1185 xsltFreeStylesheet(data); |
| 2139 | 1186 } |
| 1187 | |
| 1188 | |
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1189 static void * |
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1190 ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf) |
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1191 { |
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1192 ngx_http_xslt_filter_main_conf_t *conf; |
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1193 |
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1194 conf = ngx_palloc(cf->pool, sizeof(ngx_http_xslt_filter_main_conf_t)); |
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1195 if (conf == NULL) { |
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1196 return NGX_CONF_ERROR; |
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1197 } |
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1198 |
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1199 if (ngx_array_init(&conf->dtd_files, cf->pool, 1, |
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1200 sizeof(ngx_http_xslt_file_t)) |
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1201 != NGX_OK) |
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1202 { |
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1203 return NULL; |
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1204 } |
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1205 |
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1206 if (ngx_array_init(&conf->sheet_files, cf->pool, 1, |
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1207 sizeof(ngx_http_xslt_file_t)) |
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1208 != NGX_OK) |
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1209 { |
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1210 return NULL; |
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1211 } |
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1212 |
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1213 return conf; |
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1214 } |
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1215 |
| 2139 | 1216 |
| 1217 static void * | |
| 1218 ngx_http_xslt_filter_create_conf(ngx_conf_t *cf) | |
| 1219 { | |
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1220 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 1221 |
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1222 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_loc_conf_t)); |
| 2139 | 1223 if (conf == NULL) { |
| 1224 return NGX_CONF_ERROR; | |
| 1225 } | |
| 1226 | |
| 1227 /* | |
| 1228 * set by ngx_pcalloc(): | |
| 1229 * | |
| 2148 | 1230 * conf->dtd = NULL; |
| 1231 * conf->sheets = { NULL }; | |
| 1232 * conf->types = { NULL }; | |
| 1233 * conf->types_keys = NULL; | |
| 2139 | 1234 */ |
| 1235 | |
| 1236 return conf; | |
| 1237 } | |
| 1238 | |
| 1239 | |
| 1240 static char * | |
| 1241 ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 1242 { | |
|
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1243 ngx_http_xslt_filter_loc_conf_t *prev = parent; |
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1244 ngx_http_xslt_filter_loc_conf_t *conf = child; |
| 2139 | 1245 |
| 1246 if (conf->dtd == NULL) { | |
| 1247 conf->dtd = prev->dtd; | |
| 1248 } | |
| 1249 | |
| 1250 if (conf->sheets.nelts == 0) { | |
| 1251 conf->sheets = prev->sheets; | |
| 1252 } | |
| 1253 | |
| 2148 | 1254 if (ngx_http_merge_types(cf, conf->types_keys, &conf->types, |
| 1255 prev->types_keys, &prev->types, | |
| 1256 ngx_http_xslt_default_types) | |
| 2139 | 1257 != NGX_OK) |
| 1258 { | |
| 1259 return NGX_CONF_ERROR; | |
| 1260 } | |
| 1261 | |
| 1262 return NGX_CONF_OK; | |
| 1263 } | |
| 1264 | |
| 1265 | |
| 1266 static ngx_int_t | |
| 1267 ngx_http_xslt_filter_init(ngx_conf_t *cf) | |
| 1268 { | |
| 1269 xmlInitParser(); | |
| 1270 | |
| 1271 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
| 1272 ngx_http_top_header_filter = ngx_http_xslt_header_filter; | |
| 1273 | |
| 1274 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
| 1275 ngx_http_top_body_filter = ngx_http_xslt_body_filter; | |
| 1276 | |
| 1277 return NGX_OK; | |
| 1278 } | |
| 1279 | |
| 1280 | |
| 1281 static void | |
| 1282 ngx_http_xslt_filter_exit(ngx_cycle_t *cycle) | |
| 1283 { | |
| 1284 xsltCleanupGlobals(); | |
| 1285 xmlCleanupParser(); | |
| 1286 } |