Mercurial > hg > nginx
annotate src/http/modules/ngx_http_xslt_filter_module.c @ 2158:18e85d78fb0c
disable ranges, because xslt filter runs after range body filter
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Wed, 06 Aug 2008 09:38:34 +0000 |
| parents | 0c6d0bd60579 |
| children | 0ec936b0010a |
| 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 | |
| 335 r->headers_out.content_length_n = b->last - b->pos; | |
| 336 | |
| 337 if (r->headers_out.content_length) { | |
| 338 r->headers_out.content_length->hash = 0; | |
| 339 r->headers_out.content_length = NULL; | |
| 340 } | |
| 341 | |
| 342 rc = ngx_http_next_header_filter(r); | |
| 343 | |
| 344 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
| 345 ngx_free(b->pos); | |
| 346 return rc; | |
| 347 } | |
| 348 | |
| 349 cln->handler = ngx_http_xslt_cleanup; | |
| 350 cln->data = b->pos; | |
| 351 | |
| 352 out.buf = b; | |
| 353 out.next = NULL; | |
| 354 | |
| 355 return ngx_http_next_body_filter(r, &out); | |
| 356 } | |
| 357 | |
| 358 | |
| 359 static ngx_int_t | |
| 360 ngx_http_xslt_filter_internal_error(ngx_http_request_t *r) | |
| 361 { | |
| 362 ngx_int_t rc; | |
| 363 | |
| 364 /* clear the modules contexts */ | |
| 365 ngx_memzero(r->ctx, sizeof(void *) * ngx_http_max_module); | |
| 366 | |
| 367 rc = ngx_http_special_response_handler(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 368 | |
| 369 /* NGX_ERROR resets any pending data */ | |
| 370 | |
| 371 return (rc == NGX_OK) ? NGX_ERROR : rc; | |
| 372 } | |
| 373 | |
| 374 | |
| 375 static ngx_int_t | |
| 376 ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 377 ngx_buf_t *b) | |
| 378 { | |
| 379 int err; | |
| 380 xmlSAXHandler *sax; | |
| 381 xmlParserCtxtPtr ctxt; | |
| 382 | |
| 383 if (ctx->ctxt == NULL) { | |
| 384 | |
| 385 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL); | |
| 386 if (ctxt == NULL) { | |
| 387 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 388 "xmlCreatePushParserCtxt() failed"); | |
| 389 return NGX_ERROR; | |
| 390 } | |
| 391 | |
| 392 ctx->sax = ngx_palloc(r->pool, sizeof(xmlSAXHandler)); | |
| 393 if (ctx->sax == NULL) { | |
| 394 return NGX_ERROR; | |
| 395 } | |
| 396 | |
| 397 sax = ctxt->sax; | |
| 398 | |
| 399 ngx_memcpy(ctx->sax, sax, sizeof(xmlSAXHandler)); | |
| 400 | |
| 401 sax->startDocument = ngx_http_xslt_sax_start_document; | |
| 402 sax->endDocument = ngx_http_xslt_sax_end_document; | |
| 403 | |
| 404 sax->internalSubset = ngx_http_xslt_sax_internal_subset; | |
| 405 sax->externalSubset = ngx_http_xslt_sax_external_subset; | |
| 406 sax->entityDecl = ngx_http_xslt_sax_entity_decl; | |
| 407 sax->attributeDecl = ngx_http_xslt_sax_attribute_decl; | |
| 408 sax->elementDecl = ngx_http_xslt_sax_element_decl; | |
| 409 sax->notationDecl = ngx_http_xslt_sax_notation_decl; | |
| 410 sax->unparsedEntityDecl = ngx_http_xslt_sax_unparsed_entity_decl; | |
| 411 sax->setDocumentLocator = NULL; | |
| 412 | |
| 413 sax->startElementNs = ngx_http_xslt_sax_start_element; | |
| 414 sax->endElementNs = ngx_http_xslt_sax_end_element; | |
| 415 | |
| 416 sax->characters = ngx_http_xslt_sax_characters; | |
| 417 sax->ignorableWhitespace = ngx_http_xslt_sax_characters; | |
| 418 sax->cdataBlock = ngx_http_xslt_sax_cdata_block; | |
| 419 sax->getEntity = ngx_http_xslt_sax_get_entity; | |
| 420 sax->resolveEntity = ngx_http_xslt_sax_resolve_entity; | |
| 421 sax->getParameterEntity = ngx_http_xslt_sax_get_parameter_entity; | |
| 422 sax->reference = ngx_http_xslt_sax_reference; | |
| 423 sax->comment = ngx_http_xslt_sax_comment; | |
| 424 sax->processingInstruction = ngx_http_xslt_sax_processing_instruction; | |
| 425 | |
| 426 sax->isStandalone = ngx_http_xslt_sax_is_standalone; | |
| 427 sax->hasInternalSubset = ngx_http_xslt_sax_has_internal_subset; | |
| 428 sax->hasExternalSubset = ngx_http_xslt_sax_has_external_subset; | |
| 429 | |
| 430 sax->warning = NULL; | |
| 431 sax->error = ngx_http_xslt_sax_error; | |
| 432 sax->fatalError = ngx_http_xslt_sax_error; | |
| 433 | |
| 434 ctxt->userData = ctx; | |
| 435 | |
| 436 ctxt->replaceEntities = 1; | |
| 437 ctxt->loadsubset = 1; | |
| 438 | |
| 439 ctx->ctxt = ctxt; | |
| 440 ctx->request = r; | |
| 441 } | |
| 442 | |
| 443 err = xmlParseChunk(ctx->ctxt, (char *) b->pos, | |
| 444 (int) (b->last - b->pos), b->last_buf); | |
| 445 | |
| 446 if (err == 0) { | |
| 447 b->pos = b->last; | |
| 448 return NGX_OK; | |
| 449 } | |
| 450 | |
| 451 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 452 "xmlParseChunk() failed, error:%d", err); | |
| 453 | |
| 454 return NGX_ERROR; | |
| 455 } | |
| 456 | |
| 457 | |
| 458 static void | |
| 459 ngx_http_xslt_sax_start_document(void *data) | |
| 460 { | |
| 461 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 462 | |
| 463 ctx->sax->startDocument(ctx->ctxt); | |
| 464 } | |
| 465 | |
| 466 | |
| 467 static void | |
| 468 ngx_http_xslt_sax_end_document(void *data) | |
| 469 { | |
| 470 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 471 | |
| 472 ctx->sax->endDocument(ctx->ctxt); | |
| 473 } | |
| 474 | |
| 475 | |
| 476 static void | |
| 477 ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name, | |
| 478 const xmlChar *externalId, const xmlChar *systemId) | |
| 479 { | |
| 480 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 481 | |
| 482 ctx->sax->internalSubset(ctx->ctxt, name, externalId, systemId); | |
| 483 } | |
| 484 | |
| 485 | |
| 486 static void | |
| 487 ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
| 488 const xmlChar *externalId, const xmlChar *systemId) | |
| 489 { | |
| 490 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 491 | |
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492 xmlDocPtr doc; |
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493 xmlDtdPtr dtd; |
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494 ngx_http_request_t *r; |
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495 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 496 |
| 497 r = ctx->request; | |
| 498 | |
| 499 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 500 | |
| 501 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 502 "xslt filter extSubset: \"%s\" \"%s\" \"%s\"", | |
| 503 name ? name : (xmlChar *) "", | |
| 504 externalId ? externalId : (xmlChar *) "", | |
| 505 systemId ? systemId : (xmlChar *) ""); | |
| 506 | |
| 507 doc = ctx->ctxt->myDoc; | |
| 508 | |
| 509 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 510 | |
| 511 dtd = conf->dtd; | |
| 512 | |
| 513 #else | |
| 514 | |
| 515 dtd = xmlCopyDtd(conf->dtd); | |
| 516 if (dtd == NULL) { | |
| 517 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 518 "xmlCopyDtd() failed"); | |
| 519 return; | |
| 520 } | |
| 521 | |
| 522 if (doc->children == NULL) { | |
| 523 xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd); | |
| 524 | |
| 525 } else { | |
| 526 xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd); | |
| 527 } | |
| 528 | |
| 529 #endif | |
| 530 | |
| 531 doc->extSubset = dtd; | |
| 532 } | |
| 533 | |
| 534 | |
| 535 static void | |
| 536 ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name, int type, | |
| 537 const xmlChar *publicId, const xmlChar *systemId, xmlChar *content) | |
| 538 { | |
| 539 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 540 | |
| 541 ctx->sax->entityDecl(ctx->ctxt, name, type, publicId, systemId, content); | |
| 542 } | |
| 543 | |
| 544 | |
| 545 static void | |
| 546 ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem, | |
| 547 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue, | |
| 548 xmlEnumerationPtr tree) | |
| 549 { | |
| 550 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 551 | |
| 552 ctx->sax->attributeDecl(ctx->ctxt, elem, fullname, type, def, defaultValue, | |
| 553 tree); | |
| 554 } | |
| 555 | |
| 556 | |
| 557 static void | |
| 558 ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name, int type, | |
| 559 xmlElementContentPtr content) | |
| 560 { | |
| 561 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 562 | |
| 563 ctx->sax->elementDecl(ctx->ctxt, name, type, content); | |
| 564 } | |
| 565 | |
| 566 | |
| 567 static void | |
| 568 ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name, | |
| 569 const xmlChar *publicId, const xmlChar *systemId) | |
| 570 { | |
| 571 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 572 | |
| 573 ctx->sax->notationDecl(ctx->ctxt, name, publicId, systemId); | |
| 574 } | |
| 575 | |
| 576 | |
| 577 static void | |
| 578 ngx_http_xslt_sax_unparsed_entity_decl(void *data, const xmlChar *name, | |
| 579 const xmlChar *publicId, const xmlChar *systemId, | |
| 580 const xmlChar *notationName) | |
| 581 { | |
| 582 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 583 | |
| 584 ctx->sax->unparsedEntityDecl(ctx->ctxt, name, publicId, systemId, | |
| 585 notationName); | |
| 586 } | |
| 587 | |
| 588 | |
| 589 static void | |
| 590 ngx_http_xslt_sax_start_element(void *data, const xmlChar *localname, | |
| 591 const xmlChar *prefix, const xmlChar *URI, int nb_namespaces, | |
| 592 const xmlChar **namespaces, int nb_attributes, int nb_defaulted, | |
| 593 const xmlChar **attributes) | |
| 594 { | |
| 595 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 596 | |
| 597 ctx->sax->startElementNs(ctx->ctxt, localname, prefix, URI, nb_namespaces, | |
| 598 namespaces, nb_attributes, nb_defaulted, attributes); | |
| 599 } | |
| 600 | |
| 601 | |
| 602 static void | |
| 603 ngx_http_xslt_sax_end_element(void *data, | |
| 604 const xmlChar * localname ATTRIBUTE_UNUSED, | |
| 605 const xmlChar * prefix ATTRIBUTE_UNUSED, | |
| 606 const xmlChar * URI ATTRIBUTE_UNUSED) | |
| 607 { | |
| 608 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 609 | |
| 610 ctx->sax->endElementNs(ctx->ctxt, localname, prefix, URI); | |
| 611 } | |
| 612 | |
| 613 | |
| 614 static void | |
| 615 ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len) | |
| 616 { | |
| 617 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 618 | |
| 619 ctx->sax->characters(ctx->ctxt, p, len); | |
| 620 } | |
| 621 | |
| 622 | |
| 623 static void | |
| 624 ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p, int len) | |
| 625 { | |
| 626 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 627 | |
| 628 ctx->sax->cdataBlock(ctx->ctxt, p, len); | |
| 629 } | |
| 630 | |
| 631 | |
| 632 static xmlEntityPtr | |
| 633 ngx_http_xslt_sax_get_entity(void *data, const xmlChar *name) | |
| 634 { | |
| 635 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 636 | |
| 637 return ctx->sax->getEntity(ctx->ctxt, name); | |
| 638 } | |
| 639 | |
| 640 | |
| 641 static xmlEntityPtr | |
| 642 ngx_http_xslt_sax_get_parameter_entity(void *data, const xmlChar *name) | |
| 643 { | |
| 644 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 645 | |
| 646 return ctx->sax->getParameterEntity(ctx->ctxt, name); | |
| 647 } | |
| 648 | |
| 649 | |
| 650 static xmlParserInputPtr | |
| 651 ngx_http_xslt_sax_resolve_entity(void *data, const xmlChar *publicId, | |
| 652 const xmlChar *systemId) | |
| 653 { | |
| 654 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 655 | |
| 656 return ctx->sax->resolveEntity(ctx->ctxt, publicId, systemId); | |
| 657 } | |
| 658 | |
| 659 | |
| 660 static void | |
| 661 ngx_http_xslt_sax_reference(void *data, const xmlChar *name) | |
| 662 { | |
| 663 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 664 | |
| 665 ctx->sax->reference(ctx->ctxt, name); | |
| 666 } | |
| 667 | |
| 668 | |
| 669 static void | |
| 670 ngx_http_xslt_sax_comment(void *data, const xmlChar *value) | |
| 671 { | |
| 672 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 673 | |
| 674 ctx->sax->comment(ctx->ctxt, value); | |
| 675 } | |
| 676 | |
| 677 | |
| 678 static void | |
| 679 ngx_http_xslt_sax_processing_instruction(void *data, const xmlChar *target, | |
| 680 const xmlChar *pidata) | |
| 681 { | |
| 682 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 683 | |
| 684 ctx->sax->processingInstruction(ctx->ctxt, target, pidata); | |
| 685 } | |
| 686 | |
| 687 | |
| 688 static int | |
| 689 ngx_http_xslt_sax_is_standalone(void *data) | |
| 690 { | |
| 691 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 692 | |
| 693 return ctx->sax->isStandalone(ctx->ctxt); | |
| 694 } | |
| 695 | |
| 696 | |
| 697 static int | |
| 698 ngx_http_xslt_sax_has_internal_subset(void *data) | |
| 699 { | |
| 700 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 701 | |
| 702 return ctx->sax->hasInternalSubset(ctx->ctxt); | |
| 703 } | |
| 704 | |
| 705 | |
| 706 static int | |
| 707 ngx_http_xslt_sax_has_external_subset(void *data) | |
| 708 { | |
| 709 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 710 | |
| 711 return ctx->sax->hasExternalSubset(ctx->ctxt); | |
| 712 } | |
| 713 | |
| 714 | |
| 715 static void ngx_cdecl | |
| 716 ngx_http_xslt_sax_error(void *data, const char *msg, ...) | |
| 717 { | |
| 718 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 719 | |
| 720 size_t n; | |
| 721 va_list args; | |
| 722 u_char buf[NGX_MAX_ERROR_STR]; | |
| 723 | |
| 724 buf[0] = '\0'; | |
| 725 | |
| 726 va_start(args, msg); | |
| 727 n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args); | |
| 728 va_end(args); | |
| 729 | |
| 730 while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ } | |
| 731 | |
| 732 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
| 733 "libxml2 error: \"%*s\"", n, buf); | |
| 734 } | |
| 735 | |
| 736 | |
| 737 static ngx_buf_t * | |
| 738 ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
| 739 ngx_http_xslt_filter_ctx_t *ctx) | |
| 740 { | |
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741 int len, rc, doc_type; |
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742 u_char *type, *encoding; |
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743 ngx_buf_t *b; |
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744 ngx_uint_t i; |
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745 xmlChar *buf; |
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746 xmlDocPtr doc, res; |
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747 ngx_http_xslt_sheet_t *sheet; |
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748 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 749 |
| 750 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 751 sheet = conf->sheets.elts; | |
| 752 doc = ctx->doc; | |
| 753 | |
| 754 /* preallocate array for 4 params */ | |
| 755 | |
| 756 if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *)) | |
| 757 != NGX_OK) | |
| 758 { | |
| 759 xmlFreeDoc(doc); | |
| 760 return NULL; | |
| 761 } | |
| 762 | |
| 763 for (i = 0; i < conf->sheets.nelts; i++) { | |
| 764 | |
| 765 if (ngx_http_xslt_params(r, ctx, &sheet[i].params) != NGX_OK) { | |
| 766 xmlFreeDoc(doc); | |
| 767 return NULL; | |
| 768 } | |
| 769 | |
| 770 res = xsltApplyStylesheet(sheet[i].stylesheet, doc, ctx->params.elts); | |
| 771 | |
| 772 xmlFreeDoc(doc); | |
| 773 | |
| 774 if (res == NULL) { | |
| 775 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 776 "xsltApplyStylesheet() failed"); | |
| 777 return NULL; | |
| 778 } | |
| 779 | |
| 780 doc = res; | |
| 781 | |
| 782 /* reset array elements */ | |
| 783 ctx->params.nelts = 0; | |
| 784 } | |
| 785 | |
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786 /* there must be at least one stylesheet */ |
| 2139 | 787 |
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788 type = ngx_http_xslt_content_type(sheet[i - 1].stylesheet); |
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789 encoding = ngx_http_xslt_encoding(sheet[i - 1].stylesheet); |
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790 doc_type = doc->type; |
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791 |
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792 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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793 "xslt filter type: %d t:%s e:%s", |
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794 doc_type, type ? type : (u_char *) "(null)", |
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795 encoding ? encoding : (u_char *) "(null)"); |
| 2139 | 796 |
| 797 rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet); | |
| 798 | |
| 799 xmlFreeDoc(doc); | |
| 800 | |
| 801 if (rc != 0) { | |
| 802 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 803 "xsltSaveResultToString() failed"); | |
| 804 return NULL; | |
| 805 } | |
| 806 | |
| 807 if (len == 0) { | |
| 808 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 809 "xsltSaveResultToString() returned zero-length result"); | |
| 810 return NULL; | |
| 811 } | |
| 812 | |
| 813 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
| 814 if (b == NULL) { | |
| 815 ngx_free(buf); | |
| 816 return NULL; | |
| 817 } | |
| 818 | |
| 819 b->pos = buf; | |
| 820 b->last = buf + len; | |
| 821 b->memory = 1; | |
| 822 b->last_buf = 1; | |
| 823 | |
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824 if (type) { |
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825 len = ngx_strlen(type); |
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826 |
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827 r->headers_out.content_type_len = len; |
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828 r->headers_out.content_type.len = len; |
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829 r->headers_out.content_type.data = type; |
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830 |
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831 } else if (doc_type == XML_HTML_DOCUMENT_NODE) { |
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832 |
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833 r->headers_out.content_type_len = sizeof("text/html") - 1; |
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834 r->headers_out.content_type.len = sizeof("text/html") - 1; |
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835 r->headers_out.content_type.data = (u_char *) "text/html"; |
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836 } |
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837 |
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838 if (encoding) { |
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839 r->headers_out.charset.len = ngx_strlen(encoding); |
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840 r->headers_out.charset.data = encoding; |
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841 } |
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842 |
| 2139 | 843 return b; |
| 844 } | |
| 845 | |
| 846 | |
| 847 static ngx_int_t | |
| 848 ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 849 ngx_array_t *params) | |
| 850 { | |
| 851 u_char *p, *last, *value, *dst, *src, **s; | |
| 852 size_t len; | |
| 853 ngx_uint_t i; | |
| 854 ngx_str_t string; | |
| 855 ngx_http_xslt_param_t *param; | |
| 856 | |
| 857 param = params->elts; | |
| 858 | |
| 859 for (i = 0; i < params->nelts; i++) { | |
| 860 | |
| 861 if (ngx_http_script_run(r, &string, param[i].lengths->elts, 1, | |
| 862 param[i].values->elts) | |
| 863 == NULL) | |
| 864 { | |
| 865 return NGX_ERROR; | |
| 866 } | |
| 867 | |
| 868 last = string.data + string.len - 1; | |
| 869 *last = '\0'; | |
| 870 | |
| 871 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 872 "xslt filter param: \"%s\"", string.data); | |
| 873 | |
| 874 p = string.data; | |
| 875 | |
| 876 while (p && *p) { | |
| 877 | |
| 878 value = p; | |
| 879 p = (u_char *) ngx_strchr(p, '='); | |
| 880 if (p == NULL) { | |
| 881 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 882 "invalid libxslt parameter \"%s\"", value); | |
| 883 return NGX_ERROR; | |
| 884 } | |
| 885 *p++ = '\0'; | |
| 886 | |
| 887 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 888 "xslt filter param name: \"%s\"", value); | |
| 889 | |
| 890 s = ngx_array_push(&ctx->params); | |
| 891 if (s == NULL) { | |
| 892 return NGX_ERROR; | |
| 893 } | |
| 894 | |
| 895 *s = value; | |
| 896 | |
| 897 value = p; | |
| 898 p = (u_char *) ngx_strchr(p, ':'); | |
| 899 | |
| 900 if (p) { | |
| 901 len = p - value; | |
| 902 *p++ = '\0'; | |
| 903 | |
| 904 } else { | |
| 905 len = last - value; | |
| 906 } | |
| 907 | |
| 908 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 909 "xslt filter param value: \"%s\"", value); | |
| 910 | |
| 911 dst = value; | |
| 912 src = value; | |
| 913 | |
| 914 ngx_unescape_uri(&dst, &src, len, 0); | |
| 915 | |
| 916 *dst = '\0'; | |
| 917 | |
| 918 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 919 "xslt filter param unescaped: \"%s\"", value); | |
| 920 | |
| 921 s = ngx_array_push(&ctx->params); | |
| 922 if (s == NULL) { | |
| 923 return NGX_ERROR; | |
| 924 } | |
| 925 | |
| 926 *s = value; | |
| 927 } | |
| 928 } | |
| 929 | |
| 930 s = ngx_array_push(&ctx->params); | |
| 931 if (s == NULL) { | |
| 932 return NGX_ERROR; | |
| 933 } | |
| 934 | |
| 935 *s = NULL; | |
| 936 | |
| 937 return NGX_OK; | |
| 938 } | |
| 939 | |
| 940 | |
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941 static u_char * |
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942 ngx_http_xslt_content_type(xsltStylesheetPtr s) |
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943 { |
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944 u_char *type; |
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945 |
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946 if (s->mediaType) { |
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947 return s->mediaType; |
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948 } |
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949 |
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950 for (s = s->imports; s; s = s->next) { |
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951 |
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952 type = ngx_http_xslt_content_type(s); |
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953 |
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954 if (type) { |
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955 return type; |
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956 } |
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957 } |
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958 |
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959 return NULL; |
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960 } |
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961 |
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962 |
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963 static u_char * |
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964 ngx_http_xslt_encoding(xsltStylesheetPtr s) |
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965 { |
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966 u_char *encoding; |
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967 |
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968 if (s->encoding) { |
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969 return s->encoding; |
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970 } |
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971 |
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972 for (s = s->imports; s; s = s->next) { |
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973 |
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974 encoding = ngx_http_xslt_encoding(s); |
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975 |
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976 if (encoding) { |
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977 return encoding; |
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978 } |
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979 } |
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980 |
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981 return NULL; |
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982 } |
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983 |
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984 |
| 2139 | 985 static void |
| 986 ngx_http_xslt_cleanup(void *data) | |
| 987 { | |
| 988 ngx_free(data); | |
| 989 } | |
| 990 | |
| 991 | |
| 992 static char * | |
| 993 ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 994 { | |
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995 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
| 2139 | 996 |
|
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997 ngx_str_t *value; |
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998 ngx_uint_t i; |
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999 ngx_pool_cleanup_t *cln; |
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1000 ngx_http_xslt_file_t *file; |
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1001 ngx_http_xslt_filter_main_conf_t *xmcf; |
| 2139 | 1002 |
| 1003 if (xlcf->dtd) { | |
| 1004 return "is duplicate"; | |
| 1005 } | |
| 1006 | |
| 1007 value = cf->args->elts; | |
| 1008 | |
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1009 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); |
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1010 |
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1011 file = xmcf->dtd_files.elts; |
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1012 for (i = 0; i < xmcf->dtd_files.nelts; i++) { |
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1013 if (ngx_strcmp(file[i].name, &value[1].data) == 0) { |
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1014 xlcf->dtd = file[i].data; |
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1015 return NGX_CONF_OK; |
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1016 } |
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1017 } |
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1018 |
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1019 cln = ngx_pool_cleanup_add(cf->pool, 0); |
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1020 if (cln == NULL) { |
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1021 return NGX_CONF_ERROR; |
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1022 } |
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1023 |
| 2139 | 1024 xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data); |
| 1025 | |
| 1026 if (xlcf->dtd == NULL) { | |
| 1027 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed"); | |
| 1028 return NGX_CONF_ERROR; | |
| 1029 } | |
| 1030 | |
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1031 cln->handler = ngx_http_xslt_cleanup_dtd; |
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1032 cln->data = xlcf->dtd; |
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1033 |
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1034 file = ngx_array_push(&xmcf->dtd_files); |
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1035 if (file == NULL) { |
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1036 return NGX_CONF_ERROR; |
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1037 } |
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1038 |
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1039 file->name = value[1].data; |
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1040 file->data = xlcf->dtd; |
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1041 |
| 2139 | 1042 return NGX_CONF_OK; |
| 1043 } | |
| 1044 | |
| 1045 | |
| 1046 | |
| 1047 static char * | |
| 1048 ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 1049 { | |
|
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1050 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
| 2139 | 1051 |
|
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1052 ngx_str_t *value; |
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1053 ngx_uint_t i, n; |
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1054 ngx_pool_cleanup_t *cln; |
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1055 ngx_http_xslt_file_t *file; |
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1056 ngx_http_xslt_sheet_t *sheet; |
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1057 ngx_http_xslt_param_t *param; |
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1058 ngx_http_script_compile_t sc; |
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1059 ngx_http_xslt_filter_main_conf_t *xmcf; |
| 2139 | 1060 |
| 1061 value = cf->args->elts; | |
| 1062 | |
| 1063 if (xlcf->sheets.elts == NULL) { | |
| 1064 if (ngx_array_init(&xlcf->sheets, cf->pool, 1, | |
| 1065 sizeof(ngx_http_xslt_sheet_t)) | |
| 1066 != NGX_OK) | |
| 1067 { | |
| 1068 return NGX_CONF_ERROR; | |
| 1069 } | |
| 1070 } | |
| 1071 | |
| 1072 sheet = ngx_array_push(&xlcf->sheets); | |
| 1073 if (sheet == NULL) { | |
| 1074 return NGX_CONF_ERROR; | |
| 1075 } | |
| 1076 | |
| 1077 ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t)); | |
| 1078 | |
| 1079 if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) { | |
| 1080 return NGX_CONF_ERROR; | |
| 1081 } | |
| 1082 | |
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1083 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); |
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1084 |
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1085 file = xmcf->sheet_files.elts; |
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1086 for (i = 0; i < xmcf->sheet_files.nelts; i++) { |
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1087 if (ngx_strcmp(file[i].name, &value[1].data) == 0) { |
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1088 sheet->stylesheet = file[i].data; |
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1089 goto found; |
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1090 } |
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1091 } |
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1092 |
| 2139 | 1093 cln = ngx_pool_cleanup_add(cf->pool, 0); |
| 1094 if (cln == NULL) { | |
| 1095 return NGX_CONF_ERROR; | |
| 1096 } | |
| 1097 | |
| 1098 sheet->stylesheet = xsltParseStylesheetFile(value[1].data); | |
| 1099 if (sheet->stylesheet == NULL) { | |
| 1100 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, | |
| 1101 "xsltParseStylesheetFile(\"%s\") failed", | |
| 1102 value[1].data); | |
| 1103 return NGX_CONF_ERROR; | |
| 1104 } | |
| 1105 | |
| 1106 cln->handler = ngx_http_xslt_cleanup_stylesheet; | |
| 1107 cln->data = sheet->stylesheet; | |
| 1108 | |
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1109 file = ngx_array_push(&xmcf->sheet_files); |
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1110 if (file == NULL) { |
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1111 return NGX_CONF_ERROR; |
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1112 } |
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1113 |
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1114 file->name = value[1].data; |
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1115 file->data = sheet->stylesheet; |
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1116 |
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1117 found: |
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1118 |
| 2139 | 1119 n = cf->args->nelts; |
| 1120 | |
| 1121 if (n == 2) { | |
| 1122 return NGX_CONF_OK; | |
| 1123 } | |
| 1124 | |
| 1125 if (ngx_array_init(&sheet->params, cf->pool, n - 2, | |
| 1126 sizeof(ngx_http_xslt_param_t)) | |
| 1127 != NGX_OK) | |
| 1128 { | |
| 1129 return NGX_CONF_ERROR; | |
| 1130 } | |
| 1131 | |
| 1132 for (i = 2; i < n; i++) { | |
| 1133 | |
| 1134 param = ngx_array_push(&sheet->params); | |
| 1135 if (param == NULL) { | |
| 1136 return NGX_CONF_ERROR; | |
| 1137 } | |
| 1138 | |
| 1139 param->lengths = NULL; | |
| 1140 param->values = NULL; | |
| 1141 | |
| 1142 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 1143 | |
| 1144 sc.cf = cf; | |
| 1145 sc.source = &value[i]; | |
| 1146 sc.lengths = ¶m->lengths; | |
| 1147 sc.values = ¶m->values; | |
| 1148 sc.variables = ngx_http_script_variables_count(&value[i]); | |
| 1149 sc.complete_lengths = 1; | |
| 1150 sc.complete_values = 1; | |
| 1151 | |
| 1152 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 1153 return NGX_CONF_ERROR; | |
| 1154 } | |
| 1155 } | |
| 1156 | |
| 1157 return NGX_CONF_OK; | |
| 1158 } | |
| 1159 | |
| 1160 | |
| 1161 static void | |
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1162 ngx_http_xslt_cleanup_dtd(void *data) |
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1163 { |
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1164 xmlFreeDtd(data); |
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1165 } |
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1166 |
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1167 |
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1168 static void |
| 2139 | 1169 ngx_http_xslt_cleanup_stylesheet(void *data) |
| 1170 { | |
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1171 xsltFreeStylesheet(data); |
| 2139 | 1172 } |
| 1173 | |
| 1174 | |
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1175 static void * |
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1176 ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf) |
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1177 { |
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1178 ngx_http_xslt_filter_main_conf_t *conf; |
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1179 |
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1180 conf = ngx_palloc(cf->pool, sizeof(ngx_http_xslt_filter_main_conf_t)); |
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1181 if (conf == NULL) { |
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1182 return NGX_CONF_ERROR; |
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1183 } |
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1184 |
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1185 if (ngx_array_init(&conf->dtd_files, cf->pool, 1, |
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1186 sizeof(ngx_http_xslt_file_t)) |
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1187 != NGX_OK) |
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1188 { |
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1189 return NULL; |
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1190 } |
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1191 |
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1192 if (ngx_array_init(&conf->sheet_files, cf->pool, 1, |
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1193 sizeof(ngx_http_xslt_file_t)) |
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1194 != NGX_OK) |
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1195 { |
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1196 return NULL; |
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1197 } |
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1198 |
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1199 return conf; |
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1200 } |
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1201 |
| 2139 | 1202 |
| 1203 static void * | |
| 1204 ngx_http_xslt_filter_create_conf(ngx_conf_t *cf) | |
| 1205 { | |
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1206 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 1207 |
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1208 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_loc_conf_t)); |
| 2139 | 1209 if (conf == NULL) { |
| 1210 return NGX_CONF_ERROR; | |
| 1211 } | |
| 1212 | |
| 1213 /* | |
| 1214 * set by ngx_pcalloc(): | |
| 1215 * | |
| 2148 | 1216 * conf->dtd = NULL; |
| 1217 * conf->sheets = { NULL }; | |
| 1218 * conf->types = { NULL }; | |
| 1219 * conf->types_keys = NULL; | |
| 2139 | 1220 */ |
| 1221 | |
| 1222 return conf; | |
| 1223 } | |
| 1224 | |
| 1225 | |
| 1226 static char * | |
| 1227 ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 1228 { | |
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1229 ngx_http_xslt_filter_loc_conf_t *prev = parent; |
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1230 ngx_http_xslt_filter_loc_conf_t *conf = child; |
| 2139 | 1231 |
| 1232 if (conf->dtd == NULL) { | |
| 1233 conf->dtd = prev->dtd; | |
| 1234 } | |
| 1235 | |
| 1236 if (conf->sheets.nelts == 0) { | |
| 1237 conf->sheets = prev->sheets; | |
| 1238 } | |
| 1239 | |
| 2148 | 1240 if (ngx_http_merge_types(cf, conf->types_keys, &conf->types, |
| 1241 prev->types_keys, &prev->types, | |
| 1242 ngx_http_xslt_default_types) | |
| 2139 | 1243 != NGX_OK) |
| 1244 { | |
| 1245 return NGX_CONF_ERROR; | |
| 1246 } | |
| 1247 | |
| 1248 return NGX_CONF_OK; | |
| 1249 } | |
| 1250 | |
| 1251 | |
| 1252 static ngx_int_t | |
| 1253 ngx_http_xslt_filter_init(ngx_conf_t *cf) | |
| 1254 { | |
| 1255 xmlInitParser(); | |
| 1256 | |
| 1257 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
| 1258 ngx_http_top_header_filter = ngx_http_xslt_header_filter; | |
| 1259 | |
| 1260 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
| 1261 ngx_http_top_body_filter = ngx_http_xslt_body_filter; | |
| 1262 | |
| 1263 return NGX_OK; | |
| 1264 } | |
| 1265 | |
| 1266 | |
| 1267 static void | |
| 1268 ngx_http_xslt_filter_exit(ngx_cycle_t *cycle) | |
| 1269 { | |
| 1270 xsltCleanupGlobals(); | |
| 1271 xmlCleanupParser(); | |
| 1272 } |