Mercurial > hg > nginx
annotate src/http/modules/ngx_http_xslt_filter_module.c @ 2153:6476e445d6ce
xsl:output's media-type and encoding support
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 05 Aug 2008 14:24:16 +0000 |
| parents | b23e83f5b182 |
| children | 4f48a2765da0 |
| 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; | |
|
2153
6476e445d6ce
xsl:output's media-type and encoding support
Igor Sysoev <igor@sysoev.ru>
parents:
2152
diff
changeset
|
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; | |
|
2153
6476e445d6ce
xsl:output's media-type and encoding support
Igor Sysoev <igor@sysoev.ru>
parents:
2152
diff
changeset
|
50 |
|
6476e445d6ce
xsl:output's media-type and encoding support
Igor Sysoev <igor@sysoev.ru>
parents:
2152
diff
changeset
|
51 ngx_uint_t done; /* unsigned done:1; */ |
| 2139 | 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); | |
|
2153
6476e445d6ce
xsl:output's media-type and encoding support
Igor Sysoev <igor@sysoev.ru>
parents:
2152
diff
changeset
|
112 static u_char *ngx_http_xslt_content_type(xsltStylesheetPtr s); |
|
6476e445d6ce
xsl:output's media-type and encoding support
Igor Sysoev <igor@sysoev.ru>
parents:
2152
diff
changeset
|
113 static u_char *ngx_http_xslt_encoding(xsltStylesheetPtr s); |
| 2139 | 114 static void ngx_http_xslt_cleanup(void *data); |
| 115 | |
| 116 static char *ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 117 void *conf); | |
| 118 static char *ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 119 void *conf); | |
| 120 static void ngx_http_xslt_cleanup_stylesheet(void *data); | |
| 121 static void *ngx_http_xslt_filter_create_conf(ngx_conf_t *cf); | |
| 122 static char *ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, | |
| 123 void *child); | |
| 124 static ngx_int_t ngx_http_xslt_filter_init(ngx_conf_t *cf); | |
| 125 | |
| 126 | |
| 127 ngx_str_t ngx_http_xslt_default_types[] = { | |
| 128 ngx_string("text/xml"), | |
| 129 ngx_null_string | |
| 130 }; | |
| 131 | |
| 132 | |
| 133 static ngx_command_t ngx_http_xslt_filter_commands[] = { | |
| 134 | |
| 135 { ngx_string("xml_entities"), | |
|
2150
50cede290146
fix xslt module context levels
Igor Sysoev <igor@sysoev.ru>
parents:
2148
diff
changeset
|
136 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| 2139 | 137 ngx_http_xslt_entities, |
| 138 NGX_HTTP_LOC_CONF_OFFSET, | |
| 139 0, | |
| 140 NULL }, | |
| 141 | |
| 142 { ngx_string("xslt_stylesheet"), | |
|
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c8331f70d799
xslt_stylesheet should be valid for location only
Igor Sysoev <igor@sysoev.ru>
parents:
2150
diff
changeset
|
143 NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| 2139 | 144 ngx_http_xslt_stylesheet, |
| 145 NGX_HTTP_LOC_CONF_OFFSET, | |
| 146 0, | |
| 147 NULL }, | |
| 148 | |
| 149 { ngx_string("xslt_types"), | |
|
2150
50cede290146
fix xslt module context levels
Igor Sysoev <igor@sysoev.ru>
parents:
2148
diff
changeset
|
150 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| 2139 | 151 ngx_http_types_slot, |
| 152 NGX_HTTP_LOC_CONF_OFFSET, | |
| 2148 | 153 offsetof(ngx_http_xslt_filter_conf_t, types_keys), |
| 2139 | 154 &ngx_http_xslt_default_types[0] }, |
| 155 | |
| 156 ngx_null_command | |
| 157 }; | |
| 158 | |
| 159 | |
| 160 static ngx_http_module_t ngx_http_xslt_filter_module_ctx = { | |
| 161 NULL, /* preconfiguration */ | |
| 162 ngx_http_xslt_filter_init, /* postconfiguration */ | |
| 163 | |
| 164 NULL, /* create main configuration */ | |
| 165 NULL, /* init main configuration */ | |
| 166 | |
| 167 NULL, /* create server configuration */ | |
| 168 NULL, /* merge server configuration */ | |
| 169 | |
| 170 ngx_http_xslt_filter_create_conf, /* create location configuration */ | |
| 171 ngx_http_xslt_filter_merge_conf /* merge location configuration */ | |
| 172 }; | |
| 173 | |
| 174 | |
| 175 ngx_module_t ngx_http_xslt_filter_module = { | |
| 176 NGX_MODULE_V1, | |
| 177 &ngx_http_xslt_filter_module_ctx, /* module context */ | |
| 178 ngx_http_xslt_filter_commands, /* module directives */ | |
| 179 NGX_HTTP_MODULE, /* module type */ | |
| 180 NULL, /* init master */ | |
| 181 NULL, /* init module */ | |
| 182 NULL, /* init process */ | |
| 183 NULL, /* init thread */ | |
| 184 NULL, /* exit thread */ | |
| 185 NULL, /* exit process */ | |
| 186 NULL, /* exit master */ | |
| 187 NGX_MODULE_V1_PADDING | |
| 188 }; | |
| 189 | |
| 190 | |
| 191 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; | |
| 192 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; | |
| 193 | |
| 194 | |
| 195 static ngx_int_t | |
| 196 ngx_http_xslt_header_filter(ngx_http_request_t *r) | |
| 197 { | |
| 198 ngx_http_xslt_filter_ctx_t *ctx; | |
| 199 ngx_http_xslt_filter_conf_t *conf; | |
| 200 | |
| 201 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 202 "xslt filter header"); | |
| 203 | |
| 204 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) { | |
| 205 return ngx_http_next_header_filter(r); | |
| 206 } | |
| 207 | |
| 208 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 209 | |
| 210 if (conf->sheets.nelts == 0 | |
| 2148 | 211 || ngx_http_test_content_type(r, &conf->types) == NULL) |
| 2139 | 212 { |
| 213 return ngx_http_next_header_filter(r); | |
| 214 } | |
| 215 | |
| 216 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); | |
| 217 | |
| 218 if (ctx) { | |
| 219 return ngx_http_next_header_filter(r); | |
| 220 } | |
| 221 | |
| 222 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_xslt_filter_ctx_t)); | |
| 223 if (ctx == NULL) { | |
| 224 return NGX_ERROR; | |
| 225 } | |
| 226 | |
| 227 ngx_http_set_ctx(r, ctx, ngx_http_xslt_filter_module); | |
| 228 | |
| 229 r->main_filter_need_in_memory = 1; | |
| 230 | |
| 231 return NGX_OK; | |
| 232 } | |
| 233 | |
| 234 | |
| 235 static ngx_int_t | |
| 236 ngx_http_xslt_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
| 237 { | |
| 238 ngx_chain_t *cl; | |
| 239 ngx_http_xslt_filter_ctx_t *ctx; | |
| 240 | |
| 241 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 242 "xslt filter body"); | |
| 243 | |
| 244 if (in == NULL) { | |
| 245 return ngx_http_next_body_filter(r, in); | |
| 246 } | |
| 247 | |
| 248 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); | |
| 249 | |
| 250 if (ctx == NULL || ctx->done) { | |
| 251 return ngx_http_next_body_filter(r, in); | |
| 252 } | |
| 253 | |
| 254 for (cl = in; cl; cl = cl->next) { | |
| 255 | |
| 256 if (ngx_http_xslt_add_chunk(r, ctx, cl->buf) != NGX_OK) { | |
| 257 | |
| 258 if (ctx->ctxt->myDoc){ | |
| 259 | |
| 260 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 261 ctx->ctxt->myDoc->extSubset = NULL; | |
| 262 #endif | |
| 263 xmlFreeDoc(ctx->ctxt->myDoc); | |
| 264 } | |
| 265 | |
| 266 xmlFreeParserCtxt(ctx->ctxt); | |
| 267 | |
| 268 return ngx_http_xslt_send(r, ctx, NULL); | |
| 269 } | |
| 270 | |
| 271 if (cl->buf->last_buf) { | |
| 272 | |
| 273 ctx->doc = ctx->ctxt->myDoc; | |
| 274 | |
| 275 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 276 ctx->doc->extSubset = NULL; | |
| 277 #endif | |
| 278 | |
| 279 xmlFreeParserCtxt(ctx->ctxt); | |
| 280 | |
| 281 if (ctx->ctxt->wellFormed) { | |
| 282 return ngx_http_xslt_send(r, ctx, | |
| 283 ngx_http_xslt_apply_stylesheet(r, ctx)); | |
| 284 } | |
| 285 | |
| 286 xmlFreeDoc(ctx->doc); | |
| 287 | |
| 288 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 289 "not well formed XML document"); | |
| 290 | |
| 291 return ngx_http_xslt_send(r, ctx, NULL); | |
| 292 } | |
| 293 } | |
| 294 | |
| 295 return NGX_OK; | |
| 296 } | |
| 297 | |
| 298 | |
| 299 static ngx_int_t | |
| 300 ngx_http_xslt_send(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 301 ngx_buf_t *b) | |
| 302 { | |
| 303 ngx_int_t rc; | |
| 304 ngx_chain_t out; | |
| 305 ngx_pool_cleanup_t *cln; | |
| 306 | |
| 307 ctx->done = 1; | |
| 308 | |
| 309 if (b == NULL) { | |
| 310 return ngx_http_xslt_filter_internal_error(r); | |
| 311 } | |
| 312 | |
| 313 cln = ngx_pool_cleanup_add(r->pool, 0); | |
| 314 | |
| 315 if (cln == NULL) { | |
| 316 ngx_free(b->pos); | |
| 317 return ngx_http_special_response_handler(r, | |
| 318 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 319 } | |
| 320 | |
| 321 r->headers_out.content_length_n = b->last - b->pos; | |
| 322 | |
| 323 if (r->headers_out.content_length) { | |
| 324 r->headers_out.content_length->hash = 0; | |
| 325 r->headers_out.content_length = NULL; | |
| 326 } | |
| 327 | |
| 328 r->allow_ranges = 1; | |
| 329 | |
| 330 rc = ngx_http_next_header_filter(r); | |
| 331 | |
| 332 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
| 333 ngx_free(b->pos); | |
| 334 return rc; | |
| 335 } | |
| 336 | |
| 337 cln->handler = ngx_http_xslt_cleanup; | |
| 338 cln->data = b->pos; | |
| 339 | |
| 340 out.buf = b; | |
| 341 out.next = NULL; | |
| 342 | |
| 343 return ngx_http_next_body_filter(r, &out); | |
| 344 } | |
| 345 | |
| 346 | |
| 347 static ngx_int_t | |
| 348 ngx_http_xslt_filter_internal_error(ngx_http_request_t *r) | |
| 349 { | |
| 350 ngx_int_t rc; | |
| 351 | |
| 352 /* clear the modules contexts */ | |
| 353 ngx_memzero(r->ctx, sizeof(void *) * ngx_http_max_module); | |
| 354 | |
| 355 rc = ngx_http_special_response_handler(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 356 | |
| 357 /* NGX_ERROR resets any pending data */ | |
| 358 | |
| 359 return (rc == NGX_OK) ? NGX_ERROR : rc; | |
| 360 } | |
| 361 | |
| 362 | |
| 363 static ngx_int_t | |
| 364 ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 365 ngx_buf_t *b) | |
| 366 { | |
| 367 int err; | |
| 368 xmlSAXHandler *sax; | |
| 369 xmlParserCtxtPtr ctxt; | |
| 370 | |
| 371 if (ctx->ctxt == NULL) { | |
| 372 | |
| 373 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL); | |
| 374 if (ctxt == NULL) { | |
| 375 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 376 "xmlCreatePushParserCtxt() failed"); | |
| 377 return NGX_ERROR; | |
| 378 } | |
| 379 | |
| 380 ctx->sax = ngx_palloc(r->pool, sizeof(xmlSAXHandler)); | |
| 381 if (ctx->sax == NULL) { | |
| 382 return NGX_ERROR; | |
| 383 } | |
| 384 | |
| 385 sax = ctxt->sax; | |
| 386 | |
| 387 ngx_memcpy(ctx->sax, sax, sizeof(xmlSAXHandler)); | |
| 388 | |
| 389 sax->startDocument = ngx_http_xslt_sax_start_document; | |
| 390 sax->endDocument = ngx_http_xslt_sax_end_document; | |
| 391 | |
| 392 sax->internalSubset = ngx_http_xslt_sax_internal_subset; | |
| 393 sax->externalSubset = ngx_http_xslt_sax_external_subset; | |
| 394 sax->entityDecl = ngx_http_xslt_sax_entity_decl; | |
| 395 sax->attributeDecl = ngx_http_xslt_sax_attribute_decl; | |
| 396 sax->elementDecl = ngx_http_xslt_sax_element_decl; | |
| 397 sax->notationDecl = ngx_http_xslt_sax_notation_decl; | |
| 398 sax->unparsedEntityDecl = ngx_http_xslt_sax_unparsed_entity_decl; | |
| 399 sax->setDocumentLocator = NULL; | |
| 400 | |
| 401 sax->startElementNs = ngx_http_xslt_sax_start_element; | |
| 402 sax->endElementNs = ngx_http_xslt_sax_end_element; | |
| 403 | |
| 404 sax->characters = ngx_http_xslt_sax_characters; | |
| 405 sax->ignorableWhitespace = ngx_http_xslt_sax_characters; | |
| 406 sax->cdataBlock = ngx_http_xslt_sax_cdata_block; | |
| 407 sax->getEntity = ngx_http_xslt_sax_get_entity; | |
| 408 sax->resolveEntity = ngx_http_xslt_sax_resolve_entity; | |
| 409 sax->getParameterEntity = ngx_http_xslt_sax_get_parameter_entity; | |
| 410 sax->reference = ngx_http_xslt_sax_reference; | |
| 411 sax->comment = ngx_http_xslt_sax_comment; | |
| 412 sax->processingInstruction = ngx_http_xslt_sax_processing_instruction; | |
| 413 | |
| 414 sax->isStandalone = ngx_http_xslt_sax_is_standalone; | |
| 415 sax->hasInternalSubset = ngx_http_xslt_sax_has_internal_subset; | |
| 416 sax->hasExternalSubset = ngx_http_xslt_sax_has_external_subset; | |
| 417 | |
| 418 sax->warning = NULL; | |
| 419 sax->error = ngx_http_xslt_sax_error; | |
| 420 sax->fatalError = ngx_http_xslt_sax_error; | |
| 421 | |
| 422 ctxt->userData = ctx; | |
| 423 | |
| 424 ctxt->replaceEntities = 1; | |
| 425 ctxt->loadsubset = 1; | |
| 426 | |
| 427 ctx->ctxt = ctxt; | |
| 428 ctx->request = r; | |
| 429 } | |
| 430 | |
| 431 err = xmlParseChunk(ctx->ctxt, (char *) b->pos, | |
| 432 (int) (b->last - b->pos), b->last_buf); | |
| 433 | |
| 434 if (err == 0) { | |
| 435 b->pos = b->last; | |
| 436 return NGX_OK; | |
| 437 } | |
| 438 | |
| 439 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 440 "xmlParseChunk() failed, error:%d", err); | |
| 441 | |
| 442 return NGX_ERROR; | |
| 443 } | |
| 444 | |
| 445 | |
| 446 static void | |
| 447 ngx_http_xslt_sax_start_document(void *data) | |
| 448 { | |
| 449 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 450 | |
| 451 ctx->sax->startDocument(ctx->ctxt); | |
| 452 } | |
| 453 | |
| 454 | |
| 455 static void | |
| 456 ngx_http_xslt_sax_end_document(void *data) | |
| 457 { | |
| 458 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 459 | |
| 460 ctx->sax->endDocument(ctx->ctxt); | |
| 461 } | |
| 462 | |
| 463 | |
| 464 static void | |
| 465 ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name, | |
| 466 const xmlChar *externalId, const xmlChar *systemId) | |
| 467 { | |
| 468 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 469 | |
| 470 ctx->sax->internalSubset(ctx->ctxt, name, externalId, systemId); | |
| 471 } | |
| 472 | |
| 473 | |
| 474 static void | |
| 475 ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
| 476 const xmlChar *externalId, const xmlChar *systemId) | |
| 477 { | |
| 478 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 479 | |
| 480 xmlDocPtr doc; | |
| 481 xmlDtdPtr dtd; | |
| 482 ngx_http_request_t *r; | |
| 483 ngx_http_xslt_filter_conf_t *conf; | |
| 484 | |
| 485 r = ctx->request; | |
| 486 | |
| 487 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 488 | |
| 489 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 490 "xslt filter extSubset: \"%s\" \"%s\" \"%s\"", | |
| 491 name ? name : (xmlChar *) "", | |
| 492 externalId ? externalId : (xmlChar *) "", | |
| 493 systemId ? systemId : (xmlChar *) ""); | |
| 494 | |
| 495 doc = ctx->ctxt->myDoc; | |
| 496 | |
| 497 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 498 | |
| 499 dtd = conf->dtd; | |
| 500 | |
| 501 #else | |
| 502 | |
| 503 dtd = xmlCopyDtd(conf->dtd); | |
| 504 if (dtd == NULL) { | |
| 505 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 506 "xmlCopyDtd() failed"); | |
| 507 return; | |
| 508 } | |
| 509 | |
| 510 if (doc->children == NULL) { | |
| 511 xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd); | |
| 512 | |
| 513 } else { | |
| 514 xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd); | |
| 515 } | |
| 516 | |
| 517 #endif | |
| 518 | |
| 519 doc->extSubset = dtd; | |
| 520 } | |
| 521 | |
| 522 | |
| 523 static void | |
| 524 ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name, int type, | |
| 525 const xmlChar *publicId, const xmlChar *systemId, xmlChar *content) | |
| 526 { | |
| 527 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 528 | |
| 529 ctx->sax->entityDecl(ctx->ctxt, name, type, publicId, systemId, content); | |
| 530 } | |
| 531 | |
| 532 | |
| 533 static void | |
| 534 ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem, | |
| 535 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue, | |
| 536 xmlEnumerationPtr tree) | |
| 537 { | |
| 538 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 539 | |
| 540 ctx->sax->attributeDecl(ctx->ctxt, elem, fullname, type, def, defaultValue, | |
| 541 tree); | |
| 542 } | |
| 543 | |
| 544 | |
| 545 static void | |
| 546 ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name, int type, | |
| 547 xmlElementContentPtr content) | |
| 548 { | |
| 549 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 550 | |
| 551 ctx->sax->elementDecl(ctx->ctxt, name, type, content); | |
| 552 } | |
| 553 | |
| 554 | |
| 555 static void | |
| 556 ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name, | |
| 557 const xmlChar *publicId, const xmlChar *systemId) | |
| 558 { | |
| 559 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 560 | |
| 561 ctx->sax->notationDecl(ctx->ctxt, name, publicId, systemId); | |
| 562 } | |
| 563 | |
| 564 | |
| 565 static void | |
| 566 ngx_http_xslt_sax_unparsed_entity_decl(void *data, const xmlChar *name, | |
| 567 const xmlChar *publicId, const xmlChar *systemId, | |
| 568 const xmlChar *notationName) | |
| 569 { | |
| 570 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 571 | |
| 572 ctx->sax->unparsedEntityDecl(ctx->ctxt, name, publicId, systemId, | |
| 573 notationName); | |
| 574 } | |
| 575 | |
| 576 | |
| 577 static void | |
| 578 ngx_http_xslt_sax_start_element(void *data, const xmlChar *localname, | |
| 579 const xmlChar *prefix, const xmlChar *URI, int nb_namespaces, | |
| 580 const xmlChar **namespaces, int nb_attributes, int nb_defaulted, | |
| 581 const xmlChar **attributes) | |
| 582 { | |
| 583 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 584 | |
| 585 ctx->sax->startElementNs(ctx->ctxt, localname, prefix, URI, nb_namespaces, | |
| 586 namespaces, nb_attributes, nb_defaulted, attributes); | |
| 587 } | |
| 588 | |
| 589 | |
| 590 static void | |
| 591 ngx_http_xslt_sax_end_element(void *data, | |
| 592 const xmlChar * localname ATTRIBUTE_UNUSED, | |
| 593 const xmlChar * prefix ATTRIBUTE_UNUSED, | |
| 594 const xmlChar * URI ATTRIBUTE_UNUSED) | |
| 595 { | |
| 596 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 597 | |
| 598 ctx->sax->endElementNs(ctx->ctxt, localname, prefix, URI); | |
| 599 } | |
| 600 | |
| 601 | |
| 602 static void | |
| 603 ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len) | |
| 604 { | |
| 605 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 606 | |
| 607 ctx->sax->characters(ctx->ctxt, p, len); | |
| 608 } | |
| 609 | |
| 610 | |
| 611 static void | |
| 612 ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p, int len) | |
| 613 { | |
| 614 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 615 | |
| 616 ctx->sax->cdataBlock(ctx->ctxt, p, len); | |
| 617 } | |
| 618 | |
| 619 | |
| 620 static xmlEntityPtr | |
| 621 ngx_http_xslt_sax_get_entity(void *data, const xmlChar *name) | |
| 622 { | |
| 623 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 624 | |
| 625 return ctx->sax->getEntity(ctx->ctxt, name); | |
| 626 } | |
| 627 | |
| 628 | |
| 629 static xmlEntityPtr | |
| 630 ngx_http_xslt_sax_get_parameter_entity(void *data, const xmlChar *name) | |
| 631 { | |
| 632 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 633 | |
| 634 return ctx->sax->getParameterEntity(ctx->ctxt, name); | |
| 635 } | |
| 636 | |
| 637 | |
| 638 static xmlParserInputPtr | |
| 639 ngx_http_xslt_sax_resolve_entity(void *data, const xmlChar *publicId, | |
| 640 const xmlChar *systemId) | |
| 641 { | |
| 642 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 643 | |
| 644 return ctx->sax->resolveEntity(ctx->ctxt, publicId, systemId); | |
| 645 } | |
| 646 | |
| 647 | |
| 648 static void | |
| 649 ngx_http_xslt_sax_reference(void *data, const xmlChar *name) | |
| 650 { | |
| 651 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 652 | |
| 653 ctx->sax->reference(ctx->ctxt, name); | |
| 654 } | |
| 655 | |
| 656 | |
| 657 static void | |
| 658 ngx_http_xslt_sax_comment(void *data, const xmlChar *value) | |
| 659 { | |
| 660 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 661 | |
| 662 ctx->sax->comment(ctx->ctxt, value); | |
| 663 } | |
| 664 | |
| 665 | |
| 666 static void | |
| 667 ngx_http_xslt_sax_processing_instruction(void *data, const xmlChar *target, | |
| 668 const xmlChar *pidata) | |
| 669 { | |
| 670 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 671 | |
| 672 ctx->sax->processingInstruction(ctx->ctxt, target, pidata); | |
| 673 } | |
| 674 | |
| 675 | |
| 676 static int | |
| 677 ngx_http_xslt_sax_is_standalone(void *data) | |
| 678 { | |
| 679 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 680 | |
| 681 return ctx->sax->isStandalone(ctx->ctxt); | |
| 682 } | |
| 683 | |
| 684 | |
| 685 static int | |
| 686 ngx_http_xslt_sax_has_internal_subset(void *data) | |
| 687 { | |
| 688 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 689 | |
| 690 return ctx->sax->hasInternalSubset(ctx->ctxt); | |
| 691 } | |
| 692 | |
| 693 | |
| 694 static int | |
| 695 ngx_http_xslt_sax_has_external_subset(void *data) | |
| 696 { | |
| 697 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 698 | |
| 699 return ctx->sax->hasExternalSubset(ctx->ctxt); | |
| 700 } | |
| 701 | |
| 702 | |
| 703 static void ngx_cdecl | |
| 704 ngx_http_xslt_sax_error(void *data, const char *msg, ...) | |
| 705 { | |
| 706 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 707 | |
| 708 size_t n; | |
| 709 va_list args; | |
| 710 u_char buf[NGX_MAX_ERROR_STR]; | |
| 711 | |
| 712 buf[0] = '\0'; | |
| 713 | |
| 714 va_start(args, msg); | |
| 715 n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args); | |
| 716 va_end(args); | |
| 717 | |
| 718 while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ } | |
| 719 | |
| 720 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
| 721 "libxml2 error: \"%*s\"", n, buf); | |
| 722 } | |
| 723 | |
| 724 | |
| 725 static ngx_buf_t * | |
| 726 ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
| 727 ngx_http_xslt_filter_ctx_t *ctx) | |
| 728 { | |
|
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729 int len, rc, doc_type; |
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730 u_char *type, *encoding; |
| 2139 | 731 ngx_buf_t *b; |
| 732 ngx_uint_t i; | |
| 733 xmlChar *buf; | |
| 734 xmlDocPtr doc, res; | |
| 735 ngx_http_xslt_sheet_t *sheet; | |
| 736 ngx_http_xslt_filter_conf_t *conf; | |
| 737 | |
| 738 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 739 sheet = conf->sheets.elts; | |
| 740 doc = ctx->doc; | |
| 741 | |
| 742 /* preallocate array for 4 params */ | |
| 743 | |
| 744 if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *)) | |
| 745 != NGX_OK) | |
| 746 { | |
| 747 xmlFreeDoc(doc); | |
| 748 return NULL; | |
| 749 } | |
| 750 | |
| 751 for (i = 0; i < conf->sheets.nelts; i++) { | |
| 752 | |
| 753 if (ngx_http_xslt_params(r, ctx, &sheet[i].params) != NGX_OK) { | |
| 754 xmlFreeDoc(doc); | |
| 755 return NULL; | |
| 756 } | |
| 757 | |
| 758 res = xsltApplyStylesheet(sheet[i].stylesheet, doc, ctx->params.elts); | |
| 759 | |
| 760 xmlFreeDoc(doc); | |
| 761 | |
| 762 if (res == NULL) { | |
| 763 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 764 "xsltApplyStylesheet() failed"); | |
| 765 return NULL; | |
| 766 } | |
| 767 | |
| 768 doc = res; | |
| 769 | |
| 770 /* reset array elements */ | |
| 771 ctx->params.nelts = 0; | |
| 772 } | |
| 773 | |
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774 /* there must be at least one stylesheet */ |
| 2139 | 775 |
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776 type = ngx_http_xslt_content_type(sheet[i - 1].stylesheet); |
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777 encoding = ngx_http_xslt_encoding(sheet[i - 1].stylesheet); |
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778 doc_type = doc->type; |
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779 |
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780 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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781 "xslt filter type: %d t:%s e:%s", |
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782 doc_type, type ? type : (u_char *) "(null)", |
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783 encoding ? encoding : (u_char *) "(null)"); |
| 2139 | 784 |
| 785 rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet); | |
| 786 | |
| 787 xmlFreeDoc(doc); | |
| 788 | |
| 789 if (rc != 0) { | |
| 790 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 791 "xsltSaveResultToString() failed"); | |
| 792 return NULL; | |
| 793 } | |
| 794 | |
| 795 if (len == 0) { | |
| 796 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 797 "xsltSaveResultToString() returned zero-length result"); | |
| 798 return NULL; | |
| 799 } | |
| 800 | |
| 801 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
| 802 if (b == NULL) { | |
| 803 ngx_free(buf); | |
| 804 return NULL; | |
| 805 } | |
| 806 | |
| 807 b->pos = buf; | |
| 808 b->last = buf + len; | |
| 809 b->memory = 1; | |
| 810 b->last_buf = 1; | |
| 811 | |
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812 if (type) { |
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813 len = ngx_strlen(type); |
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814 |
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815 r->headers_out.content_type_len = len; |
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816 r->headers_out.content_type.len = len; |
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817 r->headers_out.content_type.data = type; |
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818 |
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819 } else if (doc_type == XML_HTML_DOCUMENT_NODE) { |
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820 |
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821 r->headers_out.content_type_len = sizeof("text/html") - 1; |
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822 r->headers_out.content_type.len = sizeof("text/html") - 1; |
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823 r->headers_out.content_type.data = (u_char *) "text/html"; |
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824 } |
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825 |
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826 if (encoding) { |
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827 r->headers_out.charset.len = ngx_strlen(encoding); |
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828 r->headers_out.charset.data = encoding; |
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829 } |
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830 |
| 2139 | 831 return b; |
| 832 } | |
| 833 | |
| 834 | |
| 835 static ngx_int_t | |
| 836 ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 837 ngx_array_t *params) | |
| 838 { | |
| 839 u_char *p, *last, *value, *dst, *src, **s; | |
| 840 size_t len; | |
| 841 ngx_uint_t i; | |
| 842 ngx_str_t string; | |
| 843 ngx_http_xslt_param_t *param; | |
| 844 | |
| 845 param = params->elts; | |
| 846 | |
| 847 for (i = 0; i < params->nelts; i++) { | |
| 848 | |
| 849 if (ngx_http_script_run(r, &string, param[i].lengths->elts, 1, | |
| 850 param[i].values->elts) | |
| 851 == NULL) | |
| 852 { | |
| 853 return NGX_ERROR; | |
| 854 } | |
| 855 | |
| 856 last = string.data + string.len - 1; | |
| 857 *last = '\0'; | |
| 858 | |
| 859 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 860 "xslt filter param: \"%s\"", string.data); | |
| 861 | |
| 862 p = string.data; | |
| 863 | |
| 864 while (p && *p) { | |
| 865 | |
| 866 value = p; | |
| 867 p = (u_char *) ngx_strchr(p, '='); | |
| 868 if (p == NULL) { | |
| 869 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 870 "invalid libxslt parameter \"%s\"", value); | |
| 871 return NGX_ERROR; | |
| 872 } | |
| 873 *p++ = '\0'; | |
| 874 | |
| 875 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 876 "xslt filter param name: \"%s\"", value); | |
| 877 | |
| 878 s = ngx_array_push(&ctx->params); | |
| 879 if (s == NULL) { | |
| 880 return NGX_ERROR; | |
| 881 } | |
| 882 | |
| 883 *s = value; | |
| 884 | |
| 885 value = p; | |
| 886 p = (u_char *) ngx_strchr(p, ':'); | |
| 887 | |
| 888 if (p) { | |
| 889 len = p - value; | |
| 890 *p++ = '\0'; | |
| 891 | |
| 892 } else { | |
| 893 len = last - value; | |
| 894 } | |
| 895 | |
| 896 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 897 "xslt filter param value: \"%s\"", value); | |
| 898 | |
| 899 dst = value; | |
| 900 src = value; | |
| 901 | |
| 902 ngx_unescape_uri(&dst, &src, len, 0); | |
| 903 | |
| 904 *dst = '\0'; | |
| 905 | |
| 906 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 907 "xslt filter param unescaped: \"%s\"", value); | |
| 908 | |
| 909 s = ngx_array_push(&ctx->params); | |
| 910 if (s == NULL) { | |
| 911 return NGX_ERROR; | |
| 912 } | |
| 913 | |
| 914 *s = value; | |
| 915 } | |
| 916 } | |
| 917 | |
| 918 s = ngx_array_push(&ctx->params); | |
| 919 if (s == NULL) { | |
| 920 return NGX_ERROR; | |
| 921 } | |
| 922 | |
| 923 *s = NULL; | |
| 924 | |
| 925 return NGX_OK; | |
| 926 } | |
| 927 | |
| 928 | |
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929 static u_char * |
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930 ngx_http_xslt_content_type(xsltStylesheetPtr s) |
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931 { |
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932 u_char *type; |
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933 |
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934 if (s->mediaType) { |
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935 return s->mediaType; |
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936 } |
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937 |
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938 for (s = s->imports; s; s = s->next) { |
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939 |
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940 type = ngx_http_xslt_content_type(s); |
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941 |
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942 if (type) { |
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943 return type; |
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944 } |
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945 } |
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946 |
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947 return NULL; |
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948 } |
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949 |
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950 |
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951 static u_char * |
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952 ngx_http_xslt_encoding(xsltStylesheetPtr s) |
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953 { |
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954 u_char *encoding; |
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955 |
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956 if (s->encoding) { |
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957 return s->encoding; |
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958 } |
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959 |
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960 for (s = s->imports; s; s = s->next) { |
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961 |
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962 encoding = ngx_http_xslt_encoding(s); |
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963 |
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964 if (encoding) { |
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965 return encoding; |
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966 } |
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967 } |
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968 |
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969 return NULL; |
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970 } |
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971 |
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972 |
| 2139 | 973 static void |
| 974 ngx_http_xslt_cleanup(void *data) | |
| 975 { | |
| 976 ngx_free(data); | |
| 977 } | |
| 978 | |
| 979 | |
| 980 static char * | |
| 981 ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 982 { | |
| 983 ngx_http_xslt_filter_conf_t *xlcf = conf; | |
| 984 | |
| 985 ngx_str_t *value; | |
| 986 | |
| 987 if (xlcf->dtd) { | |
| 988 return "is duplicate"; | |
| 989 } | |
| 990 | |
| 991 value = cf->args->elts; | |
| 992 | |
| 993 xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data); | |
| 994 | |
| 995 if (xlcf->dtd == NULL) { | |
| 996 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed"); | |
| 997 return NGX_CONF_ERROR; | |
| 998 } | |
| 999 | |
| 1000 return NGX_CONF_OK; | |
| 1001 } | |
| 1002 | |
| 1003 | |
| 1004 | |
| 1005 static char * | |
| 1006 ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 1007 { | |
| 1008 ngx_http_xslt_filter_conf_t *xlcf = conf; | |
| 1009 | |
| 1010 ngx_str_t *value; | |
| 1011 ngx_uint_t i, n; | |
| 1012 ngx_pool_cleanup_t *cln; | |
| 1013 ngx_http_xslt_sheet_t *sheet; | |
| 1014 ngx_http_xslt_param_t *param; | |
| 1015 ngx_http_script_compile_t sc; | |
| 1016 | |
| 1017 value = cf->args->elts; | |
| 1018 | |
| 1019 if (xlcf->sheets.elts == NULL) { | |
| 1020 if (ngx_array_init(&xlcf->sheets, cf->pool, 1, | |
| 1021 sizeof(ngx_http_xslt_sheet_t)) | |
| 1022 != NGX_OK) | |
| 1023 { | |
| 1024 return NGX_CONF_ERROR; | |
| 1025 } | |
| 1026 } | |
| 1027 | |
| 1028 sheet = ngx_array_push(&xlcf->sheets); | |
| 1029 if (sheet == NULL) { | |
| 1030 return NGX_CONF_ERROR; | |
| 1031 } | |
| 1032 | |
| 1033 ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t)); | |
| 1034 | |
| 1035 if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) { | |
| 1036 return NGX_CONF_ERROR; | |
| 1037 } | |
| 1038 | |
| 1039 cln = ngx_pool_cleanup_add(cf->pool, 0); | |
| 1040 if (cln == NULL) { | |
| 1041 return NGX_CONF_ERROR; | |
| 1042 } | |
| 1043 | |
| 1044 sheet->stylesheet = xsltParseStylesheetFile(value[1].data); | |
| 1045 if (sheet->stylesheet == NULL) { | |
| 1046 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, | |
| 1047 "xsltParseStylesheetFile(\"%s\") failed", | |
| 1048 value[1].data); | |
| 1049 return NGX_CONF_ERROR; | |
| 1050 } | |
| 1051 | |
| 1052 cln->handler = ngx_http_xslt_cleanup_stylesheet; | |
| 1053 cln->data = sheet->stylesheet; | |
| 1054 | |
| 1055 n = cf->args->nelts; | |
| 1056 | |
| 1057 if (n == 2) { | |
| 1058 return NGX_CONF_OK; | |
| 1059 } | |
| 1060 | |
| 1061 if (ngx_array_init(&sheet->params, cf->pool, n - 2, | |
| 1062 sizeof(ngx_http_xslt_param_t)) | |
| 1063 != NGX_OK) | |
| 1064 { | |
| 1065 return NGX_CONF_ERROR; | |
| 1066 } | |
| 1067 | |
| 1068 for (i = 2; i < n; i++) { | |
| 1069 | |
| 1070 param = ngx_array_push(&sheet->params); | |
| 1071 if (param == NULL) { | |
| 1072 return NGX_CONF_ERROR; | |
| 1073 } | |
| 1074 | |
| 1075 param->lengths = NULL; | |
| 1076 param->values = NULL; | |
| 1077 | |
| 1078 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 1079 | |
| 1080 sc.cf = cf; | |
| 1081 sc.source = &value[i]; | |
| 1082 sc.lengths = ¶m->lengths; | |
| 1083 sc.values = ¶m->values; | |
| 1084 sc.variables = ngx_http_script_variables_count(&value[i]); | |
| 1085 sc.complete_lengths = 1; | |
| 1086 sc.complete_values = 1; | |
| 1087 | |
| 1088 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 1089 return NGX_CONF_ERROR; | |
| 1090 } | |
| 1091 } | |
| 1092 | |
| 1093 return NGX_CONF_OK; | |
| 1094 } | |
| 1095 | |
| 1096 | |
| 1097 static void | |
| 1098 ngx_http_xslt_cleanup_stylesheet(void *data) | |
| 1099 { | |
| 1100 xsltStylesheetPtr stylesheet = data; | |
| 1101 | |
| 1102 xsltFreeStylesheet(stylesheet); | |
| 1103 } | |
| 1104 | |
| 1105 | |
| 1106 | |
| 1107 static void * | |
| 1108 ngx_http_xslt_filter_create_conf(ngx_conf_t *cf) | |
| 1109 { | |
| 1110 ngx_http_xslt_filter_conf_t *conf; | |
| 1111 | |
| 1112 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_conf_t)); | |
| 1113 if (conf == NULL) { | |
| 1114 return NGX_CONF_ERROR; | |
| 1115 } | |
| 1116 | |
| 1117 /* | |
| 1118 * set by ngx_pcalloc(): | |
| 1119 * | |
| 2148 | 1120 * conf->dtd = NULL; |
| 1121 * conf->sheets = { NULL }; | |
| 1122 * conf->types = { NULL }; | |
| 1123 * conf->types_keys = NULL; | |
| 2139 | 1124 */ |
| 1125 | |
| 1126 return conf; | |
| 1127 } | |
| 1128 | |
| 1129 | |
| 1130 static char * | |
| 1131 ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 1132 { | |
| 1133 ngx_http_xslt_filter_conf_t *prev = parent; | |
| 1134 ngx_http_xslt_filter_conf_t *conf = child; | |
| 1135 | |
| 1136 if (conf->dtd == NULL) { | |
| 1137 conf->dtd = prev->dtd; | |
| 1138 } | |
| 1139 | |
| 1140 if (conf->sheets.nelts == 0) { | |
| 1141 conf->sheets = prev->sheets; | |
| 1142 } | |
| 1143 | |
| 2148 | 1144 if (ngx_http_merge_types(cf, conf->types_keys, &conf->types, |
| 1145 prev->types_keys, &prev->types, | |
| 1146 ngx_http_xslt_default_types) | |
| 2139 | 1147 != NGX_OK) |
| 1148 { | |
| 1149 return NGX_CONF_ERROR; | |
| 1150 } | |
| 1151 | |
| 1152 return NGX_CONF_OK; | |
| 1153 } | |
| 1154 | |
| 1155 | |
| 1156 static ngx_int_t | |
| 1157 ngx_http_xslt_filter_init(ngx_conf_t *cf) | |
| 1158 { | |
| 1159 xmlInitParser(); | |
| 1160 | |
| 1161 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
| 1162 ngx_http_top_header_filter = ngx_http_xslt_header_filter; | |
| 1163 | |
| 1164 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
| 1165 ngx_http_top_body_filter = ngx_http_xslt_body_filter; | |
| 1166 | |
| 1167 return NGX_OK; | |
| 1168 } | |
| 1169 | |
| 1170 | |
| 1171 static void | |
| 1172 ngx_http_xslt_filter_exit(ngx_cycle_t *cycle) | |
| 1173 { | |
| 1174 xsltCleanupGlobals(); | |
| 1175 xmlCleanupParser(); | |
| 1176 } |