Mercurial > hg > nginx
annotate src/http/modules/ngx_http_xslt_filter_module.c @ 2151:c8331f70d799
xslt_stylesheet should be valid for location only
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 05 Aug 2008 13:07:42 +0000 |
| parents | 50cede290146 |
| children | b23e83f5b182 |
| 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 { | |
| 25 ngx_array_t *lengths; | |
| 26 ngx_array_t *values; | |
| 27 } ngx_http_xslt_param_t; | |
| 28 | |
| 29 | |
| 30 typedef struct { | |
| 31 xsltStylesheetPtr stylesheet; | |
| 32 ngx_array_t params; /* ngx_http_xslt_param_t */ | |
| 33 } ngx_http_xslt_sheet_t; | |
| 34 | |
| 35 | |
| 36 typedef struct { | |
| 37 xmlDtdPtr dtd; | |
| 38 ngx_array_t sheets; /* ngx_http_xslt_sheet_t */ | |
| 2148 | 39 ngx_hash_t types; |
| 40 ngx_array_t *types_keys; | |
| 2139 | 41 } ngx_http_xslt_filter_conf_t; |
| 42 | |
| 43 | |
| 44 typedef struct { | |
| 45 xmlDocPtr doc; | |
| 46 xmlParserCtxtPtr ctxt; | |
| 47 xmlSAXHandler *sax; | |
| 48 ngx_http_request_t *request; | |
| 49 ngx_array_t params; | |
| 50 unsigned done:1; | |
| 51 unsigned html:1; | |
| 52 } ngx_http_xslt_filter_ctx_t; | |
| 53 | |
| 54 | |
| 55 static ngx_int_t ngx_http_xslt_send(ngx_http_request_t *r, | |
| 56 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b); | |
| 57 static ngx_int_t ngx_http_xslt_filter_internal_error(ngx_http_request_t *r); | |
| 58 static ngx_int_t ngx_http_xslt_add_chunk(ngx_http_request_t *r, | |
| 59 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b); | |
| 60 | |
| 61 | |
| 62 static void ngx_http_xslt_sax_start_document(void *data); | |
| 63 static void ngx_http_xslt_sax_end_document(void *data); | |
| 64 static void ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name, | |
| 65 const xmlChar *externalId, const xmlChar *systemId); | |
| 66 static void ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
| 67 const xmlChar *externalId, const xmlChar *systemId); | |
| 68 static void ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name, | |
| 69 int type, const xmlChar *publicId, const xmlChar *systemId, | |
| 70 xmlChar *content); | |
| 71 static void ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem, | |
| 72 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue, | |
| 73 xmlEnumerationPtr tree); | |
| 74 static void ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name, | |
| 75 int type, xmlElementContentPtr content); | |
| 76 static void ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name, | |
| 77 const xmlChar *publicId, const xmlChar *systemId); | |
| 78 static void ngx_http_xslt_sax_unparsed_entity_decl(void *data, | |
| 79 const xmlChar *name, const xmlChar *publicId, const xmlChar *systemId, | |
| 80 const xmlChar *notationName); | |
| 81 static void ngx_http_xslt_sax_start_element(void *data, | |
| 82 const xmlChar *localname, const xmlChar *prefix, const xmlChar *URI, | |
| 83 int nb_namespaces, const xmlChar **namespaces, int nb_attributes, | |
| 84 int nb_defaulted, const xmlChar **attributes); | |
| 85 static void ngx_http_xslt_sax_end_element(void *data, | |
| 86 const xmlChar * localname ATTRIBUTE_UNUSED, | |
| 87 const xmlChar * prefix ATTRIBUTE_UNUSED, | |
| 88 const xmlChar * URI ATTRIBUTE_UNUSED); | |
| 89 static void ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len); | |
| 90 static void ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p, | |
| 91 int len); | |
| 92 static xmlEntityPtr ngx_http_xslt_sax_get_entity(void *data, | |
| 93 const xmlChar *name); | |
| 94 static xmlEntityPtr ngx_http_xslt_sax_get_parameter_entity(void *data, | |
| 95 const xmlChar *name); | |
| 96 static xmlParserInputPtr ngx_http_xslt_sax_resolve_entity(void *data, | |
| 97 const xmlChar *publicId, const xmlChar *systemId); | |
| 98 static void ngx_http_xslt_sax_reference(void *data, const xmlChar *name); | |
| 99 static void ngx_http_xslt_sax_comment(void *data, const xmlChar *value); | |
| 100 static void ngx_http_xslt_sax_processing_instruction(void *data, | |
| 101 const xmlChar *target, const xmlChar *pidata); | |
| 102 static int ngx_http_xslt_sax_is_standalone(void *data); | |
| 103 static int ngx_http_xslt_sax_has_internal_subset(void *data); | |
| 104 static int ngx_http_xslt_sax_has_external_subset(void *data); | |
| 105 static void ngx_cdecl ngx_http_xslt_sax_error(void *data, const char *msg, ...); | |
| 106 | |
| 107 | |
| 108 static ngx_buf_t *ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
| 109 ngx_http_xslt_filter_ctx_t *ctx); | |
| 110 static ngx_int_t ngx_http_xslt_params(ngx_http_request_t *r, | |
| 111 ngx_http_xslt_filter_ctx_t *ctx, ngx_array_t *params); | |
| 112 static void ngx_http_xslt_cleanup(void *data); | |
| 113 | |
| 114 static char *ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 115 void *conf); | |
| 116 static char *ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 117 void *conf); | |
| 118 static void ngx_http_xslt_cleanup_stylesheet(void *data); | |
| 119 static void *ngx_http_xslt_filter_create_conf(ngx_conf_t *cf); | |
| 120 static char *ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, | |
| 121 void *child); | |
| 122 static ngx_int_t ngx_http_xslt_filter_init(ngx_conf_t *cf); | |
| 123 | |
| 124 | |
| 125 ngx_str_t ngx_http_xslt_default_types[] = { | |
| 126 ngx_string("text/xml"), | |
| 127 ngx_null_string | |
| 128 }; | |
| 129 | |
| 130 | |
| 131 static ngx_command_t ngx_http_xslt_filter_commands[] = { | |
| 132 | |
| 133 { ngx_string("xml_entities"), | |
|
2150
50cede290146
fix xslt module context levels
Igor Sysoev <igor@sysoev.ru>
parents:
2148
diff
changeset
|
134 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| 2139 | 135 ngx_http_xslt_entities, |
| 136 NGX_HTTP_LOC_CONF_OFFSET, | |
| 137 0, | |
| 138 NULL }, | |
| 139 | |
| 140 { ngx_string("xslt_stylesheet"), | |
|
2151
c8331f70d799
xslt_stylesheet should be valid for location only
Igor Sysoev <igor@sysoev.ru>
parents:
2150
diff
changeset
|
141 NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| 2139 | 142 ngx_http_xslt_stylesheet, |
| 143 NGX_HTTP_LOC_CONF_OFFSET, | |
| 144 0, | |
| 145 NULL }, | |
| 146 | |
| 147 { ngx_string("xslt_types"), | |
|
2150
50cede290146
fix xslt module context levels
Igor Sysoev <igor@sysoev.ru>
parents:
2148
diff
changeset
|
148 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| 2139 | 149 ngx_http_types_slot, |
| 150 NGX_HTTP_LOC_CONF_OFFSET, | |
| 2148 | 151 offsetof(ngx_http_xslt_filter_conf_t, types_keys), |
| 2139 | 152 &ngx_http_xslt_default_types[0] }, |
| 153 | |
| 154 ngx_null_command | |
| 155 }; | |
| 156 | |
| 157 | |
| 158 static ngx_http_module_t ngx_http_xslt_filter_module_ctx = { | |
| 159 NULL, /* preconfiguration */ | |
| 160 ngx_http_xslt_filter_init, /* postconfiguration */ | |
| 161 | |
| 162 NULL, /* create main configuration */ | |
| 163 NULL, /* init main configuration */ | |
| 164 | |
| 165 NULL, /* create server configuration */ | |
| 166 NULL, /* merge server configuration */ | |
| 167 | |
| 168 ngx_http_xslt_filter_create_conf, /* create location configuration */ | |
| 169 ngx_http_xslt_filter_merge_conf /* merge location configuration */ | |
| 170 }; | |
| 171 | |
| 172 | |
| 173 ngx_module_t ngx_http_xslt_filter_module = { | |
| 174 NGX_MODULE_V1, | |
| 175 &ngx_http_xslt_filter_module_ctx, /* module context */ | |
| 176 ngx_http_xslt_filter_commands, /* module directives */ | |
| 177 NGX_HTTP_MODULE, /* module type */ | |
| 178 NULL, /* init master */ | |
| 179 NULL, /* init module */ | |
| 180 NULL, /* init process */ | |
| 181 NULL, /* init thread */ | |
| 182 NULL, /* exit thread */ | |
| 183 NULL, /* exit process */ | |
| 184 NULL, /* exit master */ | |
| 185 NGX_MODULE_V1_PADDING | |
| 186 }; | |
| 187 | |
| 188 | |
| 189 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; | |
| 190 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; | |
| 191 | |
| 192 | |
| 193 static ngx_int_t | |
| 194 ngx_http_xslt_header_filter(ngx_http_request_t *r) | |
| 195 { | |
| 196 ngx_http_xslt_filter_ctx_t *ctx; | |
| 197 ngx_http_xslt_filter_conf_t *conf; | |
| 198 | |
| 199 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 200 "xslt filter header"); | |
| 201 | |
| 202 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) { | |
| 203 return ngx_http_next_header_filter(r); | |
| 204 } | |
| 205 | |
| 206 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 207 | |
| 208 if (conf->sheets.nelts == 0 | |
| 2148 | 209 || ngx_http_test_content_type(r, &conf->types) == NULL) |
| 2139 | 210 { |
| 211 return ngx_http_next_header_filter(r); | |
| 212 } | |
| 213 | |
| 214 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); | |
| 215 | |
| 216 if (ctx) { | |
| 217 return ngx_http_next_header_filter(r); | |
| 218 } | |
| 219 | |
| 220 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_xslt_filter_ctx_t)); | |
| 221 if (ctx == NULL) { | |
| 222 return NGX_ERROR; | |
| 223 } | |
| 224 | |
| 225 ngx_http_set_ctx(r, ctx, ngx_http_xslt_filter_module); | |
| 226 | |
| 227 r->main_filter_need_in_memory = 1; | |
| 228 | |
| 229 return NGX_OK; | |
| 230 } | |
| 231 | |
| 232 | |
| 233 static ngx_int_t | |
| 234 ngx_http_xslt_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
| 235 { | |
| 236 ngx_chain_t *cl; | |
| 237 ngx_http_xslt_filter_ctx_t *ctx; | |
| 238 | |
| 239 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 240 "xslt filter body"); | |
| 241 | |
| 242 if (in == NULL) { | |
| 243 return ngx_http_next_body_filter(r, in); | |
| 244 } | |
| 245 | |
| 246 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); | |
| 247 | |
| 248 if (ctx == NULL || ctx->done) { | |
| 249 return ngx_http_next_body_filter(r, in); | |
| 250 } | |
| 251 | |
| 252 for (cl = in; cl; cl = cl->next) { | |
| 253 | |
| 254 if (ngx_http_xslt_add_chunk(r, ctx, cl->buf) != NGX_OK) { | |
| 255 | |
| 256 if (ctx->ctxt->myDoc){ | |
| 257 | |
| 258 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 259 ctx->ctxt->myDoc->extSubset = NULL; | |
| 260 #endif | |
| 261 xmlFreeDoc(ctx->ctxt->myDoc); | |
| 262 } | |
| 263 | |
| 264 xmlFreeParserCtxt(ctx->ctxt); | |
| 265 | |
| 266 return ngx_http_xslt_send(r, ctx, NULL); | |
| 267 } | |
| 268 | |
| 269 if (cl->buf->last_buf) { | |
| 270 | |
| 271 ctx->doc = ctx->ctxt->myDoc; | |
| 272 | |
| 273 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 274 ctx->doc->extSubset = NULL; | |
| 275 #endif | |
| 276 | |
| 277 xmlFreeParserCtxt(ctx->ctxt); | |
| 278 | |
| 279 if (ctx->ctxt->wellFormed) { | |
| 280 return ngx_http_xslt_send(r, ctx, | |
| 281 ngx_http_xslt_apply_stylesheet(r, ctx)); | |
| 282 } | |
| 283 | |
| 284 xmlFreeDoc(ctx->doc); | |
| 285 | |
| 286 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 287 "not well formed XML document"); | |
| 288 | |
| 289 return ngx_http_xslt_send(r, ctx, NULL); | |
| 290 } | |
| 291 } | |
| 292 | |
| 293 return NGX_OK; | |
| 294 } | |
| 295 | |
| 296 | |
| 297 static ngx_int_t | |
| 298 ngx_http_xslt_send(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 299 ngx_buf_t *b) | |
| 300 { | |
| 301 ngx_int_t rc; | |
| 302 ngx_chain_t out; | |
| 303 ngx_pool_cleanup_t *cln; | |
| 304 | |
| 305 ctx->done = 1; | |
| 306 | |
| 307 if (b == NULL) { | |
| 308 return ngx_http_xslt_filter_internal_error(r); | |
| 309 } | |
| 310 | |
| 311 cln = ngx_pool_cleanup_add(r->pool, 0); | |
| 312 | |
| 313 if (cln == NULL) { | |
| 314 ngx_free(b->pos); | |
| 315 return ngx_http_special_response_handler(r, | |
| 316 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 317 } | |
| 318 | |
| 319 if (ctx->html) { | |
| 320 r->headers_out.content_type_len = sizeof("text/html") - 1; | |
| 321 r->headers_out.content_type.len = sizeof("text/html") - 1; | |
| 322 r->headers_out.content_type.data = (u_char *) "text/html"; | |
| 323 } | |
| 324 | |
| 325 r->headers_out.content_length_n = b->last - b->pos; | |
| 326 | |
| 327 if (r->headers_out.content_length) { | |
| 328 r->headers_out.content_length->hash = 0; | |
| 329 r->headers_out.content_length = NULL; | |
| 330 } | |
| 331 | |
| 332 r->allow_ranges = 1; | |
| 333 | |
| 334 rc = ngx_http_next_header_filter(r); | |
| 335 | |
| 336 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
| 337 ngx_free(b->pos); | |
| 338 return rc; | |
| 339 } | |
| 340 | |
| 341 cln->handler = ngx_http_xslt_cleanup; | |
| 342 cln->data = b->pos; | |
| 343 | |
| 344 out.buf = b; | |
| 345 out.next = NULL; | |
| 346 | |
| 347 return ngx_http_next_body_filter(r, &out); | |
| 348 } | |
| 349 | |
| 350 | |
| 351 static ngx_int_t | |
| 352 ngx_http_xslt_filter_internal_error(ngx_http_request_t *r) | |
| 353 { | |
| 354 ngx_int_t rc; | |
| 355 | |
| 356 /* clear the modules contexts */ | |
| 357 ngx_memzero(r->ctx, sizeof(void *) * ngx_http_max_module); | |
| 358 | |
| 359 rc = ngx_http_special_response_handler(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 360 | |
| 361 /* NGX_ERROR resets any pending data */ | |
| 362 | |
| 363 return (rc == NGX_OK) ? NGX_ERROR : rc; | |
| 364 } | |
| 365 | |
| 366 | |
| 367 static ngx_int_t | |
| 368 ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 369 ngx_buf_t *b) | |
| 370 { | |
| 371 int err; | |
| 372 xmlSAXHandler *sax; | |
| 373 xmlParserCtxtPtr ctxt; | |
| 374 | |
| 375 if (ctx->ctxt == NULL) { | |
| 376 | |
| 377 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL); | |
| 378 if (ctxt == NULL) { | |
| 379 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 380 "xmlCreatePushParserCtxt() failed"); | |
| 381 return NGX_ERROR; | |
| 382 } | |
| 383 | |
| 384 ctx->sax = ngx_palloc(r->pool, sizeof(xmlSAXHandler)); | |
| 385 if (ctx->sax == NULL) { | |
| 386 return NGX_ERROR; | |
| 387 } | |
| 388 | |
| 389 sax = ctxt->sax; | |
| 390 | |
| 391 ngx_memcpy(ctx->sax, sax, sizeof(xmlSAXHandler)); | |
| 392 | |
| 393 sax->startDocument = ngx_http_xslt_sax_start_document; | |
| 394 sax->endDocument = ngx_http_xslt_sax_end_document; | |
| 395 | |
| 396 sax->internalSubset = ngx_http_xslt_sax_internal_subset; | |
| 397 sax->externalSubset = ngx_http_xslt_sax_external_subset; | |
| 398 sax->entityDecl = ngx_http_xslt_sax_entity_decl; | |
| 399 sax->attributeDecl = ngx_http_xslt_sax_attribute_decl; | |
| 400 sax->elementDecl = ngx_http_xslt_sax_element_decl; | |
| 401 sax->notationDecl = ngx_http_xslt_sax_notation_decl; | |
| 402 sax->unparsedEntityDecl = ngx_http_xslt_sax_unparsed_entity_decl; | |
| 403 sax->setDocumentLocator = NULL; | |
| 404 | |
| 405 sax->startElementNs = ngx_http_xslt_sax_start_element; | |
| 406 sax->endElementNs = ngx_http_xslt_sax_end_element; | |
| 407 | |
| 408 sax->characters = ngx_http_xslt_sax_characters; | |
| 409 sax->ignorableWhitespace = ngx_http_xslt_sax_characters; | |
| 410 sax->cdataBlock = ngx_http_xslt_sax_cdata_block; | |
| 411 sax->getEntity = ngx_http_xslt_sax_get_entity; | |
| 412 sax->resolveEntity = ngx_http_xslt_sax_resolve_entity; | |
| 413 sax->getParameterEntity = ngx_http_xslt_sax_get_parameter_entity; | |
| 414 sax->reference = ngx_http_xslt_sax_reference; | |
| 415 sax->comment = ngx_http_xslt_sax_comment; | |
| 416 sax->processingInstruction = ngx_http_xslt_sax_processing_instruction; | |
| 417 | |
| 418 sax->isStandalone = ngx_http_xslt_sax_is_standalone; | |
| 419 sax->hasInternalSubset = ngx_http_xslt_sax_has_internal_subset; | |
| 420 sax->hasExternalSubset = ngx_http_xslt_sax_has_external_subset; | |
| 421 | |
| 422 sax->warning = NULL; | |
| 423 sax->error = ngx_http_xslt_sax_error; | |
| 424 sax->fatalError = ngx_http_xslt_sax_error; | |
| 425 | |
| 426 ctxt->userData = ctx; | |
| 427 | |
| 428 ctxt->replaceEntities = 1; | |
| 429 ctxt->loadsubset = 1; | |
| 430 | |
| 431 ctx->ctxt = ctxt; | |
| 432 ctx->request = r; | |
| 433 } | |
| 434 | |
| 435 err = xmlParseChunk(ctx->ctxt, (char *) b->pos, | |
| 436 (int) (b->last - b->pos), b->last_buf); | |
| 437 | |
| 438 if (err == 0) { | |
| 439 b->pos = b->last; | |
| 440 return NGX_OK; | |
| 441 } | |
| 442 | |
| 443 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 444 "xmlParseChunk() failed, error:%d", err); | |
| 445 | |
| 446 return NGX_ERROR; | |
| 447 } | |
| 448 | |
| 449 | |
| 450 static void | |
| 451 ngx_http_xslt_sax_start_document(void *data) | |
| 452 { | |
| 453 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 454 | |
| 455 ctx->sax->startDocument(ctx->ctxt); | |
| 456 } | |
| 457 | |
| 458 | |
| 459 static void | |
| 460 ngx_http_xslt_sax_end_document(void *data) | |
| 461 { | |
| 462 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 463 | |
| 464 ctx->sax->endDocument(ctx->ctxt); | |
| 465 } | |
| 466 | |
| 467 | |
| 468 static void | |
| 469 ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name, | |
| 470 const xmlChar *externalId, const xmlChar *systemId) | |
| 471 { | |
| 472 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 473 | |
| 474 ctx->sax->internalSubset(ctx->ctxt, name, externalId, systemId); | |
| 475 } | |
| 476 | |
| 477 | |
| 478 static void | |
| 479 ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
| 480 const xmlChar *externalId, const xmlChar *systemId) | |
| 481 { | |
| 482 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 483 | |
| 484 xmlDocPtr doc; | |
| 485 xmlDtdPtr dtd; | |
| 486 ngx_http_request_t *r; | |
| 487 ngx_http_xslt_filter_conf_t *conf; | |
| 488 | |
| 489 r = ctx->request; | |
| 490 | |
| 491 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 492 | |
| 493 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 494 "xslt filter extSubset: \"%s\" \"%s\" \"%s\"", | |
| 495 name ? name : (xmlChar *) "", | |
| 496 externalId ? externalId : (xmlChar *) "", | |
| 497 systemId ? systemId : (xmlChar *) ""); | |
| 498 | |
| 499 doc = ctx->ctxt->myDoc; | |
| 500 | |
| 501 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 502 | |
| 503 dtd = conf->dtd; | |
| 504 | |
| 505 #else | |
| 506 | |
| 507 dtd = xmlCopyDtd(conf->dtd); | |
| 508 if (dtd == NULL) { | |
| 509 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 510 "xmlCopyDtd() failed"); | |
| 511 return; | |
| 512 } | |
| 513 | |
| 514 dtd->name = xmlStrdup(name); | |
| 515 | |
| 516 if (doc->children == NULL) { | |
| 517 xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd); | |
| 518 | |
| 519 } else { | |
| 520 xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd); | |
| 521 } | |
| 522 | |
| 523 #endif | |
| 524 | |
| 525 doc->extSubset = dtd; | |
| 526 } | |
| 527 | |
| 528 | |
| 529 static void | |
| 530 ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name, int type, | |
| 531 const xmlChar *publicId, const xmlChar *systemId, xmlChar *content) | |
| 532 { | |
| 533 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 534 | |
| 535 ctx->sax->entityDecl(ctx->ctxt, name, type, publicId, systemId, content); | |
| 536 } | |
| 537 | |
| 538 | |
| 539 static void | |
| 540 ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem, | |
| 541 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue, | |
| 542 xmlEnumerationPtr tree) | |
| 543 { | |
| 544 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 545 | |
| 546 ctx->sax->attributeDecl(ctx->ctxt, elem, fullname, type, def, defaultValue, | |
| 547 tree); | |
| 548 } | |
| 549 | |
| 550 | |
| 551 static void | |
| 552 ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name, int type, | |
| 553 xmlElementContentPtr content) | |
| 554 { | |
| 555 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 556 | |
| 557 ctx->sax->elementDecl(ctx->ctxt, name, type, content); | |
| 558 } | |
| 559 | |
| 560 | |
| 561 static void | |
| 562 ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name, | |
| 563 const xmlChar *publicId, const xmlChar *systemId) | |
| 564 { | |
| 565 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 566 | |
| 567 ctx->sax->notationDecl(ctx->ctxt, name, publicId, systemId); | |
| 568 } | |
| 569 | |
| 570 | |
| 571 static void | |
| 572 ngx_http_xslt_sax_unparsed_entity_decl(void *data, const xmlChar *name, | |
| 573 const xmlChar *publicId, const xmlChar *systemId, | |
| 574 const xmlChar *notationName) | |
| 575 { | |
| 576 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 577 | |
| 578 ctx->sax->unparsedEntityDecl(ctx->ctxt, name, publicId, systemId, | |
| 579 notationName); | |
| 580 } | |
| 581 | |
| 582 | |
| 583 static void | |
| 584 ngx_http_xslt_sax_start_element(void *data, const xmlChar *localname, | |
| 585 const xmlChar *prefix, const xmlChar *URI, int nb_namespaces, | |
| 586 const xmlChar **namespaces, int nb_attributes, int nb_defaulted, | |
| 587 const xmlChar **attributes) | |
| 588 { | |
| 589 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 590 | |
| 591 ctx->sax->startElementNs(ctx->ctxt, localname, prefix, URI, nb_namespaces, | |
| 592 namespaces, nb_attributes, nb_defaulted, attributes); | |
| 593 } | |
| 594 | |
| 595 | |
| 596 static void | |
| 597 ngx_http_xslt_sax_end_element(void *data, | |
| 598 const xmlChar * localname ATTRIBUTE_UNUSED, | |
| 599 const xmlChar * prefix ATTRIBUTE_UNUSED, | |
| 600 const xmlChar * URI ATTRIBUTE_UNUSED) | |
| 601 { | |
| 602 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 603 | |
| 604 ctx->sax->endElementNs(ctx->ctxt, localname, prefix, URI); | |
| 605 } | |
| 606 | |
| 607 | |
| 608 static void | |
| 609 ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len) | |
| 610 { | |
| 611 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 612 | |
| 613 ctx->sax->characters(ctx->ctxt, p, len); | |
| 614 } | |
| 615 | |
| 616 | |
| 617 static void | |
| 618 ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p, int len) | |
| 619 { | |
| 620 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 621 | |
| 622 ctx->sax->cdataBlock(ctx->ctxt, p, len); | |
| 623 } | |
| 624 | |
| 625 | |
| 626 static xmlEntityPtr | |
| 627 ngx_http_xslt_sax_get_entity(void *data, const xmlChar *name) | |
| 628 { | |
| 629 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 630 | |
| 631 return ctx->sax->getEntity(ctx->ctxt, name); | |
| 632 } | |
| 633 | |
| 634 | |
| 635 static xmlEntityPtr | |
| 636 ngx_http_xslt_sax_get_parameter_entity(void *data, const xmlChar *name) | |
| 637 { | |
| 638 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 639 | |
| 640 return ctx->sax->getParameterEntity(ctx->ctxt, name); | |
| 641 } | |
| 642 | |
| 643 | |
| 644 static xmlParserInputPtr | |
| 645 ngx_http_xslt_sax_resolve_entity(void *data, const xmlChar *publicId, | |
| 646 const xmlChar *systemId) | |
| 647 { | |
| 648 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 649 | |
| 650 return ctx->sax->resolveEntity(ctx->ctxt, publicId, systemId); | |
| 651 } | |
| 652 | |
| 653 | |
| 654 static void | |
| 655 ngx_http_xslt_sax_reference(void *data, const xmlChar *name) | |
| 656 { | |
| 657 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 658 | |
| 659 ctx->sax->reference(ctx->ctxt, name); | |
| 660 } | |
| 661 | |
| 662 | |
| 663 static void | |
| 664 ngx_http_xslt_sax_comment(void *data, const xmlChar *value) | |
| 665 { | |
| 666 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 667 | |
| 668 ctx->sax->comment(ctx->ctxt, value); | |
| 669 } | |
| 670 | |
| 671 | |
| 672 static void | |
| 673 ngx_http_xslt_sax_processing_instruction(void *data, const xmlChar *target, | |
| 674 const xmlChar *pidata) | |
| 675 { | |
| 676 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 677 | |
| 678 ctx->sax->processingInstruction(ctx->ctxt, target, pidata); | |
| 679 } | |
| 680 | |
| 681 | |
| 682 static int | |
| 683 ngx_http_xslt_sax_is_standalone(void *data) | |
| 684 { | |
| 685 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 686 | |
| 687 return ctx->sax->isStandalone(ctx->ctxt); | |
| 688 } | |
| 689 | |
| 690 | |
| 691 static int | |
| 692 ngx_http_xslt_sax_has_internal_subset(void *data) | |
| 693 { | |
| 694 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 695 | |
| 696 return ctx->sax->hasInternalSubset(ctx->ctxt); | |
| 697 } | |
| 698 | |
| 699 | |
| 700 static int | |
| 701 ngx_http_xslt_sax_has_external_subset(void *data) | |
| 702 { | |
| 703 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 704 | |
| 705 return ctx->sax->hasExternalSubset(ctx->ctxt); | |
| 706 } | |
| 707 | |
| 708 | |
| 709 static void ngx_cdecl | |
| 710 ngx_http_xslt_sax_error(void *data, const char *msg, ...) | |
| 711 { | |
| 712 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 713 | |
| 714 size_t n; | |
| 715 va_list args; | |
| 716 u_char buf[NGX_MAX_ERROR_STR]; | |
| 717 | |
| 718 buf[0] = '\0'; | |
| 719 | |
| 720 va_start(args, msg); | |
| 721 n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args); | |
| 722 va_end(args); | |
| 723 | |
| 724 while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ } | |
| 725 | |
| 726 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
| 727 "libxml2 error: \"%*s\"", n, buf); | |
| 728 } | |
| 729 | |
| 730 | |
| 731 static ngx_buf_t * | |
| 732 ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
| 733 ngx_http_xslt_filter_ctx_t *ctx) | |
| 734 { | |
| 735 int len, rc; | |
| 736 ngx_buf_t *b; | |
| 737 ngx_uint_t i; | |
| 738 xmlChar *buf; | |
| 739 xmlDocPtr doc, res; | |
| 740 ngx_http_xslt_sheet_t *sheet; | |
| 741 ngx_http_xslt_filter_conf_t *conf; | |
| 742 | |
| 743 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 744 sheet = conf->sheets.elts; | |
| 745 doc = ctx->doc; | |
| 746 | |
| 747 /* preallocate array for 4 params */ | |
| 748 | |
| 749 if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *)) | |
| 750 != NGX_OK) | |
| 751 { | |
| 752 xmlFreeDoc(doc); | |
| 753 return NULL; | |
| 754 } | |
| 755 | |
| 756 for (i = 0; i < conf->sheets.nelts; i++) { | |
| 757 | |
| 758 if (ngx_http_xslt_params(r, ctx, &sheet[i].params) != NGX_OK) { | |
| 759 xmlFreeDoc(doc); | |
| 760 return NULL; | |
| 761 } | |
| 762 | |
| 763 res = xsltApplyStylesheet(sheet[i].stylesheet, doc, ctx->params.elts); | |
| 764 | |
| 765 xmlFreeDoc(doc); | |
| 766 | |
| 767 if (res == NULL) { | |
| 768 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 769 "xsltApplyStylesheet() failed"); | |
| 770 return NULL; | |
| 771 } | |
| 772 | |
| 773 doc = res; | |
| 774 | |
| 775 /* reset array elements */ | |
| 776 ctx->params.nelts = 0; | |
| 777 } | |
| 778 | |
| 779 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 780 "xslt filter doc type: %d", doc->type); | |
| 781 | |
| 782 ctx->html = (doc->type == XML_HTML_DOCUMENT_NODE) ? 1 : 0; | |
| 783 | |
| 784 rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet); | |
| 785 | |
| 786 xmlFreeDoc(doc); | |
| 787 | |
| 788 if (rc != 0) { | |
| 789 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 790 "xsltSaveResultToString() failed"); | |
| 791 return NULL; | |
| 792 } | |
| 793 | |
| 794 if (len == 0) { | |
| 795 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 796 "xsltSaveResultToString() returned zero-length result"); | |
| 797 return NULL; | |
| 798 } | |
| 799 | |
| 800 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
| 801 if (b == NULL) { | |
| 802 ngx_free(buf); | |
| 803 return NULL; | |
| 804 } | |
| 805 | |
| 806 b->pos = buf; | |
| 807 b->last = buf + len; | |
| 808 b->memory = 1; | |
| 809 b->last_buf = 1; | |
| 810 | |
| 811 return b; | |
| 812 } | |
| 813 | |
| 814 | |
| 815 static ngx_int_t | |
| 816 ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 817 ngx_array_t *params) | |
| 818 { | |
| 819 u_char *p, *last, *value, *dst, *src, **s; | |
| 820 size_t len; | |
| 821 ngx_uint_t i; | |
| 822 ngx_str_t string; | |
| 823 ngx_http_xslt_param_t *param; | |
| 824 | |
| 825 param = params->elts; | |
| 826 | |
| 827 for (i = 0; i < params->nelts; i++) { | |
| 828 | |
| 829 if (ngx_http_script_run(r, &string, param[i].lengths->elts, 1, | |
| 830 param[i].values->elts) | |
| 831 == NULL) | |
| 832 { | |
| 833 return NGX_ERROR; | |
| 834 } | |
| 835 | |
| 836 last = string.data + string.len - 1; | |
| 837 *last = '\0'; | |
| 838 | |
| 839 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 840 "xslt filter param: \"%s\"", string.data); | |
| 841 | |
| 842 p = string.data; | |
| 843 | |
| 844 while (p && *p) { | |
| 845 | |
| 846 value = p; | |
| 847 p = (u_char *) ngx_strchr(p, '='); | |
| 848 if (p == NULL) { | |
| 849 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 850 "invalid libxslt parameter \"%s\"", value); | |
| 851 return NGX_ERROR; | |
| 852 } | |
| 853 *p++ = '\0'; | |
| 854 | |
| 855 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 856 "xslt filter param name: \"%s\"", value); | |
| 857 | |
| 858 s = ngx_array_push(&ctx->params); | |
| 859 if (s == NULL) { | |
| 860 return NGX_ERROR; | |
| 861 } | |
| 862 | |
| 863 *s = value; | |
| 864 | |
| 865 value = p; | |
| 866 p = (u_char *) ngx_strchr(p, ':'); | |
| 867 | |
| 868 if (p) { | |
| 869 len = p - value; | |
| 870 *p++ = '\0'; | |
| 871 | |
| 872 } else { | |
| 873 len = last - value; | |
| 874 } | |
| 875 | |
| 876 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 877 "xslt filter param value: \"%s\"", value); | |
| 878 | |
| 879 dst = value; | |
| 880 src = value; | |
| 881 | |
| 882 ngx_unescape_uri(&dst, &src, len, 0); | |
| 883 | |
| 884 *dst = '\0'; | |
| 885 | |
| 886 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 887 "xslt filter param unescaped: \"%s\"", value); | |
| 888 | |
| 889 s = ngx_array_push(&ctx->params); | |
| 890 if (s == NULL) { | |
| 891 return NGX_ERROR; | |
| 892 } | |
| 893 | |
| 894 *s = value; | |
| 895 } | |
| 896 } | |
| 897 | |
| 898 s = ngx_array_push(&ctx->params); | |
| 899 if (s == NULL) { | |
| 900 return NGX_ERROR; | |
| 901 } | |
| 902 | |
| 903 *s = NULL; | |
| 904 | |
| 905 return NGX_OK; | |
| 906 } | |
| 907 | |
| 908 | |
| 909 static void | |
| 910 ngx_http_xslt_cleanup(void *data) | |
| 911 { | |
| 912 ngx_free(data); | |
| 913 } | |
| 914 | |
| 915 | |
| 916 static char * | |
| 917 ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 918 { | |
| 919 ngx_http_xslt_filter_conf_t *xlcf = conf; | |
| 920 | |
| 921 ngx_str_t *value; | |
| 922 | |
| 923 if (xlcf->dtd) { | |
| 924 return "is duplicate"; | |
| 925 } | |
| 926 | |
| 927 value = cf->args->elts; | |
| 928 | |
| 929 xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data); | |
| 930 | |
| 931 if (xlcf->dtd == NULL) { | |
| 932 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed"); | |
| 933 return NGX_CONF_ERROR; | |
| 934 } | |
| 935 | |
| 936 return NGX_CONF_OK; | |
| 937 } | |
| 938 | |
| 939 | |
| 940 | |
| 941 static char * | |
| 942 ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 943 { | |
| 944 ngx_http_xslt_filter_conf_t *xlcf = conf; | |
| 945 | |
| 946 ngx_str_t *value; | |
| 947 ngx_uint_t i, n; | |
| 948 ngx_pool_cleanup_t *cln; | |
| 949 ngx_http_xslt_sheet_t *sheet; | |
| 950 ngx_http_xslt_param_t *param; | |
| 951 ngx_http_script_compile_t sc; | |
| 952 | |
| 953 value = cf->args->elts; | |
| 954 | |
| 955 if (xlcf->sheets.elts == NULL) { | |
| 956 if (ngx_array_init(&xlcf->sheets, cf->pool, 1, | |
| 957 sizeof(ngx_http_xslt_sheet_t)) | |
| 958 != NGX_OK) | |
| 959 { | |
| 960 return NGX_CONF_ERROR; | |
| 961 } | |
| 962 } | |
| 963 | |
| 964 sheet = ngx_array_push(&xlcf->sheets); | |
| 965 if (sheet == NULL) { | |
| 966 return NGX_CONF_ERROR; | |
| 967 } | |
| 968 | |
| 969 ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t)); | |
| 970 | |
| 971 if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) { | |
| 972 return NGX_CONF_ERROR; | |
| 973 } | |
| 974 | |
| 975 cln = ngx_pool_cleanup_add(cf->pool, 0); | |
| 976 if (cln == NULL) { | |
| 977 return NGX_CONF_ERROR; | |
| 978 } | |
| 979 | |
| 980 sheet->stylesheet = xsltParseStylesheetFile(value[1].data); | |
| 981 if (sheet->stylesheet == NULL) { | |
| 982 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, | |
| 983 "xsltParseStylesheetFile(\"%s\") failed", | |
| 984 value[1].data); | |
| 985 return NGX_CONF_ERROR; | |
| 986 } | |
| 987 | |
| 988 cln->handler = ngx_http_xslt_cleanup_stylesheet; | |
| 989 cln->data = sheet->stylesheet; | |
| 990 | |
| 991 n = cf->args->nelts; | |
| 992 | |
| 993 if (n == 2) { | |
| 994 return NGX_CONF_OK; | |
| 995 } | |
| 996 | |
| 997 if (ngx_array_init(&sheet->params, cf->pool, n - 2, | |
| 998 sizeof(ngx_http_xslt_param_t)) | |
| 999 != NGX_OK) | |
| 1000 { | |
| 1001 return NGX_CONF_ERROR; | |
| 1002 } | |
| 1003 | |
| 1004 for (i = 2; i < n; i++) { | |
| 1005 | |
| 1006 param = ngx_array_push(&sheet->params); | |
| 1007 if (param == NULL) { | |
| 1008 return NGX_CONF_ERROR; | |
| 1009 } | |
| 1010 | |
| 1011 param->lengths = NULL; | |
| 1012 param->values = NULL; | |
| 1013 | |
| 1014 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 1015 | |
| 1016 sc.cf = cf; | |
| 1017 sc.source = &value[i]; | |
| 1018 sc.lengths = ¶m->lengths; | |
| 1019 sc.values = ¶m->values; | |
| 1020 sc.variables = ngx_http_script_variables_count(&value[i]); | |
| 1021 sc.complete_lengths = 1; | |
| 1022 sc.complete_values = 1; | |
| 1023 | |
| 1024 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 1025 return NGX_CONF_ERROR; | |
| 1026 } | |
| 1027 } | |
| 1028 | |
| 1029 return NGX_CONF_OK; | |
| 1030 } | |
| 1031 | |
| 1032 | |
| 1033 static void | |
| 1034 ngx_http_xslt_cleanup_stylesheet(void *data) | |
| 1035 { | |
| 1036 xsltStylesheetPtr stylesheet = data; | |
| 1037 | |
| 1038 xsltFreeStylesheet(stylesheet); | |
| 1039 } | |
| 1040 | |
| 1041 | |
| 1042 | |
| 1043 static void * | |
| 1044 ngx_http_xslt_filter_create_conf(ngx_conf_t *cf) | |
| 1045 { | |
| 1046 ngx_http_xslt_filter_conf_t *conf; | |
| 1047 | |
| 1048 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_conf_t)); | |
| 1049 if (conf == NULL) { | |
| 1050 return NGX_CONF_ERROR; | |
| 1051 } | |
| 1052 | |
| 1053 /* | |
| 1054 * set by ngx_pcalloc(): | |
| 1055 * | |
| 2148 | 1056 * conf->dtd = NULL; |
| 1057 * conf->sheets = { NULL }; | |
| 1058 * conf->types = { NULL }; | |
| 1059 * conf->types_keys = NULL; | |
| 2139 | 1060 */ |
| 1061 | |
| 1062 return conf; | |
| 1063 } | |
| 1064 | |
| 1065 | |
| 1066 static char * | |
| 1067 ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 1068 { | |
| 1069 ngx_http_xslt_filter_conf_t *prev = parent; | |
| 1070 ngx_http_xslt_filter_conf_t *conf = child; | |
| 1071 | |
| 1072 if (conf->dtd == NULL) { | |
| 1073 conf->dtd = prev->dtd; | |
| 1074 } | |
| 1075 | |
| 1076 if (conf->sheets.nelts == 0) { | |
| 1077 conf->sheets = prev->sheets; | |
| 1078 } | |
| 1079 | |
| 2148 | 1080 if (ngx_http_merge_types(cf, conf->types_keys, &conf->types, |
| 1081 prev->types_keys, &prev->types, | |
| 1082 ngx_http_xslt_default_types) | |
| 2139 | 1083 != NGX_OK) |
| 1084 { | |
| 1085 return NGX_CONF_ERROR; | |
| 1086 } | |
| 1087 | |
| 1088 return NGX_CONF_OK; | |
| 1089 } | |
| 1090 | |
| 1091 | |
| 1092 static ngx_int_t | |
| 1093 ngx_http_xslt_filter_init(ngx_conf_t *cf) | |
| 1094 { | |
| 1095 xmlInitParser(); | |
| 1096 | |
| 1097 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
| 1098 ngx_http_top_header_filter = ngx_http_xslt_header_filter; | |
| 1099 | |
| 1100 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
| 1101 ngx_http_top_body_filter = ngx_http_xslt_body_filter; | |
| 1102 | |
| 1103 return NGX_OK; | |
| 1104 } | |
| 1105 | |
| 1106 | |
| 1107 static void | |
| 1108 ngx_http_xslt_filter_exit(ngx_cycle_t *cycle) | |
| 1109 { | |
| 1110 xsltCleanupGlobals(); | |
| 1111 xmlCleanupParser(); | |
| 1112 } |