Mercurial > hg > nginx
annotate src/http/modules/ngx_http_xslt_filter_module.c @ 2156:0c6d0bd60579
reuse compiled DTD hash in different locations, add DTD cleanup
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 05 Aug 2008 19:05:15 +0000 |
| parents | 4f48a2765da0 |
| children | 18e85d78fb0c |
| 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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xsl:output's media-type and encoding support
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parents:
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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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parents:
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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 r->allow_ranges = 1; | |
| 343 | |
| 344 rc = ngx_http_next_header_filter(r); | |
| 345 | |
| 346 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
| 347 ngx_free(b->pos); | |
| 348 return rc; | |
| 349 } | |
| 350 | |
| 351 cln->handler = ngx_http_xslt_cleanup; | |
| 352 cln->data = b->pos; | |
| 353 | |
| 354 out.buf = b; | |
| 355 out.next = NULL; | |
| 356 | |
| 357 return ngx_http_next_body_filter(r, &out); | |
| 358 } | |
| 359 | |
| 360 | |
| 361 static ngx_int_t | |
| 362 ngx_http_xslt_filter_internal_error(ngx_http_request_t *r) | |
| 363 { | |
| 364 ngx_int_t rc; | |
| 365 | |
| 366 /* clear the modules contexts */ | |
| 367 ngx_memzero(r->ctx, sizeof(void *) * ngx_http_max_module); | |
| 368 | |
| 369 rc = ngx_http_special_response_handler(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 370 | |
| 371 /* NGX_ERROR resets any pending data */ | |
| 372 | |
| 373 return (rc == NGX_OK) ? NGX_ERROR : rc; | |
| 374 } | |
| 375 | |
| 376 | |
| 377 static ngx_int_t | |
| 378 ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 379 ngx_buf_t *b) | |
| 380 { | |
| 381 int err; | |
| 382 xmlSAXHandler *sax; | |
| 383 xmlParserCtxtPtr ctxt; | |
| 384 | |
| 385 if (ctx->ctxt == NULL) { | |
| 386 | |
| 387 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL); | |
| 388 if (ctxt == NULL) { | |
| 389 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 390 "xmlCreatePushParserCtxt() failed"); | |
| 391 return NGX_ERROR; | |
| 392 } | |
| 393 | |
| 394 ctx->sax = ngx_palloc(r->pool, sizeof(xmlSAXHandler)); | |
| 395 if (ctx->sax == NULL) { | |
| 396 return NGX_ERROR; | |
| 397 } | |
| 398 | |
| 399 sax = ctxt->sax; | |
| 400 | |
| 401 ngx_memcpy(ctx->sax, sax, sizeof(xmlSAXHandler)); | |
| 402 | |
| 403 sax->startDocument = ngx_http_xslt_sax_start_document; | |
| 404 sax->endDocument = ngx_http_xslt_sax_end_document; | |
| 405 | |
| 406 sax->internalSubset = ngx_http_xslt_sax_internal_subset; | |
| 407 sax->externalSubset = ngx_http_xslt_sax_external_subset; | |
| 408 sax->entityDecl = ngx_http_xslt_sax_entity_decl; | |
| 409 sax->attributeDecl = ngx_http_xslt_sax_attribute_decl; | |
| 410 sax->elementDecl = ngx_http_xslt_sax_element_decl; | |
| 411 sax->notationDecl = ngx_http_xslt_sax_notation_decl; | |
| 412 sax->unparsedEntityDecl = ngx_http_xslt_sax_unparsed_entity_decl; | |
| 413 sax->setDocumentLocator = NULL; | |
| 414 | |
| 415 sax->startElementNs = ngx_http_xslt_sax_start_element; | |
| 416 sax->endElementNs = ngx_http_xslt_sax_end_element; | |
| 417 | |
| 418 sax->characters = ngx_http_xslt_sax_characters; | |
| 419 sax->ignorableWhitespace = ngx_http_xslt_sax_characters; | |
| 420 sax->cdataBlock = ngx_http_xslt_sax_cdata_block; | |
| 421 sax->getEntity = ngx_http_xslt_sax_get_entity; | |
| 422 sax->resolveEntity = ngx_http_xslt_sax_resolve_entity; | |
| 423 sax->getParameterEntity = ngx_http_xslt_sax_get_parameter_entity; | |
| 424 sax->reference = ngx_http_xslt_sax_reference; | |
| 425 sax->comment = ngx_http_xslt_sax_comment; | |
| 426 sax->processingInstruction = ngx_http_xslt_sax_processing_instruction; | |
| 427 | |
| 428 sax->isStandalone = ngx_http_xslt_sax_is_standalone; | |
| 429 sax->hasInternalSubset = ngx_http_xslt_sax_has_internal_subset; | |
| 430 sax->hasExternalSubset = ngx_http_xslt_sax_has_external_subset; | |
| 431 | |
| 432 sax->warning = NULL; | |
| 433 sax->error = ngx_http_xslt_sax_error; | |
| 434 sax->fatalError = ngx_http_xslt_sax_error; | |
| 435 | |
| 436 ctxt->userData = ctx; | |
| 437 | |
| 438 ctxt->replaceEntities = 1; | |
| 439 ctxt->loadsubset = 1; | |
| 440 | |
| 441 ctx->ctxt = ctxt; | |
| 442 ctx->request = r; | |
| 443 } | |
| 444 | |
| 445 err = xmlParseChunk(ctx->ctxt, (char *) b->pos, | |
| 446 (int) (b->last - b->pos), b->last_buf); | |
| 447 | |
| 448 if (err == 0) { | |
| 449 b->pos = b->last; | |
| 450 return NGX_OK; | |
| 451 } | |
| 452 | |
| 453 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 454 "xmlParseChunk() failed, error:%d", err); | |
| 455 | |
| 456 return NGX_ERROR; | |
| 457 } | |
| 458 | |
| 459 | |
| 460 static void | |
| 461 ngx_http_xslt_sax_start_document(void *data) | |
| 462 { | |
| 463 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 464 | |
| 465 ctx->sax->startDocument(ctx->ctxt); | |
| 466 } | |
| 467 | |
| 468 | |
| 469 static void | |
| 470 ngx_http_xslt_sax_end_document(void *data) | |
| 471 { | |
| 472 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 473 | |
| 474 ctx->sax->endDocument(ctx->ctxt); | |
| 475 } | |
| 476 | |
| 477 | |
| 478 static void | |
| 479 ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name, | |
| 480 const xmlChar *externalId, const xmlChar *systemId) | |
| 481 { | |
| 482 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 483 | |
| 484 ctx->sax->internalSubset(ctx->ctxt, name, externalId, systemId); | |
| 485 } | |
| 486 | |
| 487 | |
| 488 static void | |
| 489 ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
| 490 const xmlChar *externalId, const xmlChar *systemId) | |
| 491 { | |
| 492 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 493 | |
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494 xmlDocPtr doc; |
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495 xmlDtdPtr dtd; |
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496 ngx_http_request_t *r; |
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497 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 498 |
| 499 r = ctx->request; | |
| 500 | |
| 501 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 502 | |
| 503 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 504 "xslt filter extSubset: \"%s\" \"%s\" \"%s\"", | |
| 505 name ? name : (xmlChar *) "", | |
| 506 externalId ? externalId : (xmlChar *) "", | |
| 507 systemId ? systemId : (xmlChar *) ""); | |
| 508 | |
| 509 doc = ctx->ctxt->myDoc; | |
| 510 | |
| 511 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 512 | |
| 513 dtd = conf->dtd; | |
| 514 | |
| 515 #else | |
| 516 | |
| 517 dtd = xmlCopyDtd(conf->dtd); | |
| 518 if (dtd == NULL) { | |
| 519 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 520 "xmlCopyDtd() failed"); | |
| 521 return; | |
| 522 } | |
| 523 | |
| 524 if (doc->children == NULL) { | |
| 525 xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd); | |
| 526 | |
| 527 } else { | |
| 528 xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd); | |
| 529 } | |
| 530 | |
| 531 #endif | |
| 532 | |
| 533 doc->extSubset = dtd; | |
| 534 } | |
| 535 | |
| 536 | |
| 537 static void | |
| 538 ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name, int type, | |
| 539 const xmlChar *publicId, const xmlChar *systemId, xmlChar *content) | |
| 540 { | |
| 541 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 542 | |
| 543 ctx->sax->entityDecl(ctx->ctxt, name, type, publicId, systemId, content); | |
| 544 } | |
| 545 | |
| 546 | |
| 547 static void | |
| 548 ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem, | |
| 549 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue, | |
| 550 xmlEnumerationPtr tree) | |
| 551 { | |
| 552 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 553 | |
| 554 ctx->sax->attributeDecl(ctx->ctxt, elem, fullname, type, def, defaultValue, | |
| 555 tree); | |
| 556 } | |
| 557 | |
| 558 | |
| 559 static void | |
| 560 ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name, int type, | |
| 561 xmlElementContentPtr content) | |
| 562 { | |
| 563 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 564 | |
| 565 ctx->sax->elementDecl(ctx->ctxt, name, type, content); | |
| 566 } | |
| 567 | |
| 568 | |
| 569 static void | |
| 570 ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name, | |
| 571 const xmlChar *publicId, const xmlChar *systemId) | |
| 572 { | |
| 573 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 574 | |
| 575 ctx->sax->notationDecl(ctx->ctxt, name, publicId, systemId); | |
| 576 } | |
| 577 | |
| 578 | |
| 579 static void | |
| 580 ngx_http_xslt_sax_unparsed_entity_decl(void *data, const xmlChar *name, | |
| 581 const xmlChar *publicId, const xmlChar *systemId, | |
| 582 const xmlChar *notationName) | |
| 583 { | |
| 584 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 585 | |
| 586 ctx->sax->unparsedEntityDecl(ctx->ctxt, name, publicId, systemId, | |
| 587 notationName); | |
| 588 } | |
| 589 | |
| 590 | |
| 591 static void | |
| 592 ngx_http_xslt_sax_start_element(void *data, const xmlChar *localname, | |
| 593 const xmlChar *prefix, const xmlChar *URI, int nb_namespaces, | |
| 594 const xmlChar **namespaces, int nb_attributes, int nb_defaulted, | |
| 595 const xmlChar **attributes) | |
| 596 { | |
| 597 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 598 | |
| 599 ctx->sax->startElementNs(ctx->ctxt, localname, prefix, URI, nb_namespaces, | |
| 600 namespaces, nb_attributes, nb_defaulted, attributes); | |
| 601 } | |
| 602 | |
| 603 | |
| 604 static void | |
| 605 ngx_http_xslt_sax_end_element(void *data, | |
| 606 const xmlChar * localname ATTRIBUTE_UNUSED, | |
| 607 const xmlChar * prefix ATTRIBUTE_UNUSED, | |
| 608 const xmlChar * URI ATTRIBUTE_UNUSED) | |
| 609 { | |
| 610 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 611 | |
| 612 ctx->sax->endElementNs(ctx->ctxt, localname, prefix, URI); | |
| 613 } | |
| 614 | |
| 615 | |
| 616 static void | |
| 617 ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len) | |
| 618 { | |
| 619 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 620 | |
| 621 ctx->sax->characters(ctx->ctxt, p, len); | |
| 622 } | |
| 623 | |
| 624 | |
| 625 static void | |
| 626 ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p, int len) | |
| 627 { | |
| 628 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 629 | |
| 630 ctx->sax->cdataBlock(ctx->ctxt, p, len); | |
| 631 } | |
| 632 | |
| 633 | |
| 634 static xmlEntityPtr | |
| 635 ngx_http_xslt_sax_get_entity(void *data, const xmlChar *name) | |
| 636 { | |
| 637 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 638 | |
| 639 return ctx->sax->getEntity(ctx->ctxt, name); | |
| 640 } | |
| 641 | |
| 642 | |
| 643 static xmlEntityPtr | |
| 644 ngx_http_xslt_sax_get_parameter_entity(void *data, const xmlChar *name) | |
| 645 { | |
| 646 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 647 | |
| 648 return ctx->sax->getParameterEntity(ctx->ctxt, name); | |
| 649 } | |
| 650 | |
| 651 | |
| 652 static xmlParserInputPtr | |
| 653 ngx_http_xslt_sax_resolve_entity(void *data, const xmlChar *publicId, | |
| 654 const xmlChar *systemId) | |
| 655 { | |
| 656 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 657 | |
| 658 return ctx->sax->resolveEntity(ctx->ctxt, publicId, systemId); | |
| 659 } | |
| 660 | |
| 661 | |
| 662 static void | |
| 663 ngx_http_xslt_sax_reference(void *data, const xmlChar *name) | |
| 664 { | |
| 665 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 666 | |
| 667 ctx->sax->reference(ctx->ctxt, name); | |
| 668 } | |
| 669 | |
| 670 | |
| 671 static void | |
| 672 ngx_http_xslt_sax_comment(void *data, const xmlChar *value) | |
| 673 { | |
| 674 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 675 | |
| 676 ctx->sax->comment(ctx->ctxt, value); | |
| 677 } | |
| 678 | |
| 679 | |
| 680 static void | |
| 681 ngx_http_xslt_sax_processing_instruction(void *data, const xmlChar *target, | |
| 682 const xmlChar *pidata) | |
| 683 { | |
| 684 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 685 | |
| 686 ctx->sax->processingInstruction(ctx->ctxt, target, pidata); | |
| 687 } | |
| 688 | |
| 689 | |
| 690 static int | |
| 691 ngx_http_xslt_sax_is_standalone(void *data) | |
| 692 { | |
| 693 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 694 | |
| 695 return ctx->sax->isStandalone(ctx->ctxt); | |
| 696 } | |
| 697 | |
| 698 | |
| 699 static int | |
| 700 ngx_http_xslt_sax_has_internal_subset(void *data) | |
| 701 { | |
| 702 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 703 | |
| 704 return ctx->sax->hasInternalSubset(ctx->ctxt); | |
| 705 } | |
| 706 | |
| 707 | |
| 708 static int | |
| 709 ngx_http_xslt_sax_has_external_subset(void *data) | |
| 710 { | |
| 711 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 712 | |
| 713 return ctx->sax->hasExternalSubset(ctx->ctxt); | |
| 714 } | |
| 715 | |
| 716 | |
| 717 static void ngx_cdecl | |
| 718 ngx_http_xslt_sax_error(void *data, const char *msg, ...) | |
| 719 { | |
| 720 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 721 | |
| 722 size_t n; | |
| 723 va_list args; | |
| 724 u_char buf[NGX_MAX_ERROR_STR]; | |
| 725 | |
| 726 buf[0] = '\0'; | |
| 727 | |
| 728 va_start(args, msg); | |
| 729 n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args); | |
| 730 va_end(args); | |
| 731 | |
| 732 while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ } | |
| 733 | |
| 734 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
| 735 "libxml2 error: \"%*s\"", n, buf); | |
| 736 } | |
| 737 | |
| 738 | |
| 739 static ngx_buf_t * | |
| 740 ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
| 741 ngx_http_xslt_filter_ctx_t *ctx) | |
| 742 { | |
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743 int len, rc, doc_type; |
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744 u_char *type, *encoding; |
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745 ngx_buf_t *b; |
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746 ngx_uint_t i; |
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747 xmlChar *buf; |
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748 xmlDocPtr doc, res; |
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749 ngx_http_xslt_sheet_t *sheet; |
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750 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 751 |
| 752 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 753 sheet = conf->sheets.elts; | |
| 754 doc = ctx->doc; | |
| 755 | |
| 756 /* preallocate array for 4 params */ | |
| 757 | |
| 758 if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *)) | |
| 759 != NGX_OK) | |
| 760 { | |
| 761 xmlFreeDoc(doc); | |
| 762 return NULL; | |
| 763 } | |
| 764 | |
| 765 for (i = 0; i < conf->sheets.nelts; i++) { | |
| 766 | |
| 767 if (ngx_http_xslt_params(r, ctx, &sheet[i].params) != NGX_OK) { | |
| 768 xmlFreeDoc(doc); | |
| 769 return NULL; | |
| 770 } | |
| 771 | |
| 772 res = xsltApplyStylesheet(sheet[i].stylesheet, doc, ctx->params.elts); | |
| 773 | |
| 774 xmlFreeDoc(doc); | |
| 775 | |
| 776 if (res == NULL) { | |
| 777 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 778 "xsltApplyStylesheet() failed"); | |
| 779 return NULL; | |
| 780 } | |
| 781 | |
| 782 doc = res; | |
| 783 | |
| 784 /* reset array elements */ | |
| 785 ctx->params.nelts = 0; | |
| 786 } | |
| 787 | |
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788 /* there must be at least one stylesheet */ |
| 2139 | 789 |
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790 type = ngx_http_xslt_content_type(sheet[i - 1].stylesheet); |
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791 encoding = ngx_http_xslt_encoding(sheet[i - 1].stylesheet); |
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792 doc_type = doc->type; |
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793 |
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794 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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795 "xslt filter type: %d t:%s e:%s", |
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796 doc_type, type ? type : (u_char *) "(null)", |
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797 encoding ? encoding : (u_char *) "(null)"); |
| 2139 | 798 |
| 799 rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet); | |
| 800 | |
| 801 xmlFreeDoc(doc); | |
| 802 | |
| 803 if (rc != 0) { | |
| 804 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 805 "xsltSaveResultToString() failed"); | |
| 806 return NULL; | |
| 807 } | |
| 808 | |
| 809 if (len == 0) { | |
| 810 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 811 "xsltSaveResultToString() returned zero-length result"); | |
| 812 return NULL; | |
| 813 } | |
| 814 | |
| 815 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
| 816 if (b == NULL) { | |
| 817 ngx_free(buf); | |
| 818 return NULL; | |
| 819 } | |
| 820 | |
| 821 b->pos = buf; | |
| 822 b->last = buf + len; | |
| 823 b->memory = 1; | |
| 824 b->last_buf = 1; | |
| 825 | |
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826 if (type) { |
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827 len = ngx_strlen(type); |
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828 |
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829 r->headers_out.content_type_len = len; |
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830 r->headers_out.content_type.len = len; |
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831 r->headers_out.content_type.data = type; |
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832 |
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833 } else if (doc_type == XML_HTML_DOCUMENT_NODE) { |
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834 |
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835 r->headers_out.content_type_len = sizeof("text/html") - 1; |
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836 r->headers_out.content_type.len = sizeof("text/html") - 1; |
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837 r->headers_out.content_type.data = (u_char *) "text/html"; |
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838 } |
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839 |
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840 if (encoding) { |
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841 r->headers_out.charset.len = ngx_strlen(encoding); |
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842 r->headers_out.charset.data = encoding; |
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843 } |
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844 |
| 2139 | 845 return b; |
| 846 } | |
| 847 | |
| 848 | |
| 849 static ngx_int_t | |
| 850 ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 851 ngx_array_t *params) | |
| 852 { | |
| 853 u_char *p, *last, *value, *dst, *src, **s; | |
| 854 size_t len; | |
| 855 ngx_uint_t i; | |
| 856 ngx_str_t string; | |
| 857 ngx_http_xslt_param_t *param; | |
| 858 | |
| 859 param = params->elts; | |
| 860 | |
| 861 for (i = 0; i < params->nelts; i++) { | |
| 862 | |
| 863 if (ngx_http_script_run(r, &string, param[i].lengths->elts, 1, | |
| 864 param[i].values->elts) | |
| 865 == NULL) | |
| 866 { | |
| 867 return NGX_ERROR; | |
| 868 } | |
| 869 | |
| 870 last = string.data + string.len - 1; | |
| 871 *last = '\0'; | |
| 872 | |
| 873 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 874 "xslt filter param: \"%s\"", string.data); | |
| 875 | |
| 876 p = string.data; | |
| 877 | |
| 878 while (p && *p) { | |
| 879 | |
| 880 value = p; | |
| 881 p = (u_char *) ngx_strchr(p, '='); | |
| 882 if (p == NULL) { | |
| 883 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 884 "invalid libxslt parameter \"%s\"", value); | |
| 885 return NGX_ERROR; | |
| 886 } | |
| 887 *p++ = '\0'; | |
| 888 | |
| 889 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 890 "xslt filter param name: \"%s\"", value); | |
| 891 | |
| 892 s = ngx_array_push(&ctx->params); | |
| 893 if (s == NULL) { | |
| 894 return NGX_ERROR; | |
| 895 } | |
| 896 | |
| 897 *s = value; | |
| 898 | |
| 899 value = p; | |
| 900 p = (u_char *) ngx_strchr(p, ':'); | |
| 901 | |
| 902 if (p) { | |
| 903 len = p - value; | |
| 904 *p++ = '\0'; | |
| 905 | |
| 906 } else { | |
| 907 len = last - value; | |
| 908 } | |
| 909 | |
| 910 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 911 "xslt filter param value: \"%s\"", value); | |
| 912 | |
| 913 dst = value; | |
| 914 src = value; | |
| 915 | |
| 916 ngx_unescape_uri(&dst, &src, len, 0); | |
| 917 | |
| 918 *dst = '\0'; | |
| 919 | |
| 920 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 921 "xslt filter param unescaped: \"%s\"", value); | |
| 922 | |
| 923 s = ngx_array_push(&ctx->params); | |
| 924 if (s == NULL) { | |
| 925 return NGX_ERROR; | |
| 926 } | |
| 927 | |
| 928 *s = value; | |
| 929 } | |
| 930 } | |
| 931 | |
| 932 s = ngx_array_push(&ctx->params); | |
| 933 if (s == NULL) { | |
| 934 return NGX_ERROR; | |
| 935 } | |
| 936 | |
| 937 *s = NULL; | |
| 938 | |
| 939 return NGX_OK; | |
| 940 } | |
| 941 | |
| 942 | |
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943 static u_char * |
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944 ngx_http_xslt_content_type(xsltStylesheetPtr s) |
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945 { |
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946 u_char *type; |
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947 |
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948 if (s->mediaType) { |
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949 return s->mediaType; |
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950 } |
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951 |
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952 for (s = s->imports; s; s = s->next) { |
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953 |
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954 type = ngx_http_xslt_content_type(s); |
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955 |
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956 if (type) { |
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957 return type; |
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958 } |
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959 } |
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960 |
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961 return NULL; |
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962 } |
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963 |
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964 |
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965 static u_char * |
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966 ngx_http_xslt_encoding(xsltStylesheetPtr s) |
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967 { |
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968 u_char *encoding; |
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969 |
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970 if (s->encoding) { |
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971 return s->encoding; |
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972 } |
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973 |
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974 for (s = s->imports; s; s = s->next) { |
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975 |
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976 encoding = ngx_http_xslt_encoding(s); |
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977 |
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978 if (encoding) { |
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979 return encoding; |
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980 } |
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981 } |
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982 |
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983 return NULL; |
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984 } |
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985 |
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986 |
| 2139 | 987 static void |
| 988 ngx_http_xslt_cleanup(void *data) | |
| 989 { | |
| 990 ngx_free(data); | |
| 991 } | |
| 992 | |
| 993 | |
| 994 static char * | |
| 995 ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 996 { | |
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997 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
| 2139 | 998 |
|
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999 ngx_str_t *value; |
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1000 ngx_uint_t i; |
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1001 ngx_pool_cleanup_t *cln; |
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1002 ngx_http_xslt_file_t *file; |
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1003 ngx_http_xslt_filter_main_conf_t *xmcf; |
| 2139 | 1004 |
| 1005 if (xlcf->dtd) { | |
| 1006 return "is duplicate"; | |
| 1007 } | |
| 1008 | |
| 1009 value = cf->args->elts; | |
| 1010 | |
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1011 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); |
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1012 |
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1013 file = xmcf->dtd_files.elts; |
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1014 for (i = 0; i < xmcf->dtd_files.nelts; i++) { |
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1015 if (ngx_strcmp(file[i].name, &value[1].data) == 0) { |
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1016 xlcf->dtd = file[i].data; |
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1017 return NGX_CONF_OK; |
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1018 } |
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1019 } |
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1020 |
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1021 cln = ngx_pool_cleanup_add(cf->pool, 0); |
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1022 if (cln == NULL) { |
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1023 return NGX_CONF_ERROR; |
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1024 } |
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1025 |
| 2139 | 1026 xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data); |
| 1027 | |
| 1028 if (xlcf->dtd == NULL) { | |
| 1029 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed"); | |
| 1030 return NGX_CONF_ERROR; | |
| 1031 } | |
| 1032 | |
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1033 cln->handler = ngx_http_xslt_cleanup_dtd; |
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1034 cln->data = xlcf->dtd; |
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1035 |
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1036 file = ngx_array_push(&xmcf->dtd_files); |
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1037 if (file == NULL) { |
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1038 return NGX_CONF_ERROR; |
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1039 } |
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1040 |
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1041 file->name = value[1].data; |
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1042 file->data = xlcf->dtd; |
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1043 |
| 2139 | 1044 return NGX_CONF_OK; |
| 1045 } | |
| 1046 | |
| 1047 | |
| 1048 | |
| 1049 static char * | |
| 1050 ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 1051 { | |
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1052 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
| 2139 | 1053 |
|
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1054 ngx_str_t *value; |
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1055 ngx_uint_t i, n; |
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1056 ngx_pool_cleanup_t *cln; |
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1057 ngx_http_xslt_file_t *file; |
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1058 ngx_http_xslt_sheet_t *sheet; |
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1059 ngx_http_xslt_param_t *param; |
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1060 ngx_http_script_compile_t sc; |
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1061 ngx_http_xslt_filter_main_conf_t *xmcf; |
| 2139 | 1062 |
| 1063 value = cf->args->elts; | |
| 1064 | |
| 1065 if (xlcf->sheets.elts == NULL) { | |
| 1066 if (ngx_array_init(&xlcf->sheets, cf->pool, 1, | |
| 1067 sizeof(ngx_http_xslt_sheet_t)) | |
| 1068 != NGX_OK) | |
| 1069 { | |
| 1070 return NGX_CONF_ERROR; | |
| 1071 } | |
| 1072 } | |
| 1073 | |
| 1074 sheet = ngx_array_push(&xlcf->sheets); | |
| 1075 if (sheet == NULL) { | |
| 1076 return NGX_CONF_ERROR; | |
| 1077 } | |
| 1078 | |
| 1079 ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t)); | |
| 1080 | |
| 1081 if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) { | |
| 1082 return NGX_CONF_ERROR; | |
| 1083 } | |
| 1084 | |
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1085 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); |
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1086 |
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1087 file = xmcf->sheet_files.elts; |
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1088 for (i = 0; i < xmcf->sheet_files.nelts; i++) { |
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1089 if (ngx_strcmp(file[i].name, &value[1].data) == 0) { |
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1090 sheet->stylesheet = file[i].data; |
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1091 goto found; |
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1092 } |
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1093 } |
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1094 |
| 2139 | 1095 cln = ngx_pool_cleanup_add(cf->pool, 0); |
| 1096 if (cln == NULL) { | |
| 1097 return NGX_CONF_ERROR; | |
| 1098 } | |
| 1099 | |
| 1100 sheet->stylesheet = xsltParseStylesheetFile(value[1].data); | |
| 1101 if (sheet->stylesheet == NULL) { | |
| 1102 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, | |
| 1103 "xsltParseStylesheetFile(\"%s\") failed", | |
| 1104 value[1].data); | |
| 1105 return NGX_CONF_ERROR; | |
| 1106 } | |
| 1107 | |
| 1108 cln->handler = ngx_http_xslt_cleanup_stylesheet; | |
| 1109 cln->data = sheet->stylesheet; | |
| 1110 | |
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1111 file = ngx_array_push(&xmcf->sheet_files); |
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1112 if (file == NULL) { |
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1113 return NGX_CONF_ERROR; |
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1114 } |
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1115 |
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1116 file->name = value[1].data; |
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1117 file->data = sheet->stylesheet; |
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1118 |
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1119 found: |
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1120 |
| 2139 | 1121 n = cf->args->nelts; |
| 1122 | |
| 1123 if (n == 2) { | |
| 1124 return NGX_CONF_OK; | |
| 1125 } | |
| 1126 | |
| 1127 if (ngx_array_init(&sheet->params, cf->pool, n - 2, | |
| 1128 sizeof(ngx_http_xslt_param_t)) | |
| 1129 != NGX_OK) | |
| 1130 { | |
| 1131 return NGX_CONF_ERROR; | |
| 1132 } | |
| 1133 | |
| 1134 for (i = 2; i < n; i++) { | |
| 1135 | |
| 1136 param = ngx_array_push(&sheet->params); | |
| 1137 if (param == NULL) { | |
| 1138 return NGX_CONF_ERROR; | |
| 1139 } | |
| 1140 | |
| 1141 param->lengths = NULL; | |
| 1142 param->values = NULL; | |
| 1143 | |
| 1144 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 1145 | |
| 1146 sc.cf = cf; | |
| 1147 sc.source = &value[i]; | |
| 1148 sc.lengths = ¶m->lengths; | |
| 1149 sc.values = ¶m->values; | |
| 1150 sc.variables = ngx_http_script_variables_count(&value[i]); | |
| 1151 sc.complete_lengths = 1; | |
| 1152 sc.complete_values = 1; | |
| 1153 | |
| 1154 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 1155 return NGX_CONF_ERROR; | |
| 1156 } | |
| 1157 } | |
| 1158 | |
| 1159 return NGX_CONF_OK; | |
| 1160 } | |
| 1161 | |
| 1162 | |
| 1163 static void | |
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1164 ngx_http_xslt_cleanup_dtd(void *data) |
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1165 { |
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1166 xmlFreeDtd(data); |
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1167 } |
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1168 |
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1169 |
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1170 static void |
| 2139 | 1171 ngx_http_xslt_cleanup_stylesheet(void *data) |
| 1172 { | |
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1173 xsltFreeStylesheet(data); |
| 2139 | 1174 } |
| 1175 | |
| 1176 | |
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1177 static void * |
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1178 ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf) |
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1179 { |
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1180 ngx_http_xslt_filter_main_conf_t *conf; |
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1181 |
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1182 conf = ngx_palloc(cf->pool, sizeof(ngx_http_xslt_filter_main_conf_t)); |
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1183 if (conf == NULL) { |
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1184 return NGX_CONF_ERROR; |
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1185 } |
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1186 |
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1187 if (ngx_array_init(&conf->dtd_files, cf->pool, 1, |
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1188 sizeof(ngx_http_xslt_file_t)) |
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1189 != NGX_OK) |
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1190 { |
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1191 return NULL; |
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1192 } |
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1193 |
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1194 if (ngx_array_init(&conf->sheet_files, cf->pool, 1, |
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1195 sizeof(ngx_http_xslt_file_t)) |
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1196 != NGX_OK) |
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1197 { |
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1198 return NULL; |
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1199 } |
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1200 |
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1201 return conf; |
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1202 } |
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1203 |
| 2139 | 1204 |
| 1205 static void * | |
| 1206 ngx_http_xslt_filter_create_conf(ngx_conf_t *cf) | |
| 1207 { | |
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1208 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 1209 |
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1210 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_loc_conf_t)); |
| 2139 | 1211 if (conf == NULL) { |
| 1212 return NGX_CONF_ERROR; | |
| 1213 } | |
| 1214 | |
| 1215 /* | |
| 1216 * set by ngx_pcalloc(): | |
| 1217 * | |
| 2148 | 1218 * conf->dtd = NULL; |
| 1219 * conf->sheets = { NULL }; | |
| 1220 * conf->types = { NULL }; | |
| 1221 * conf->types_keys = NULL; | |
| 2139 | 1222 */ |
| 1223 | |
| 1224 return conf; | |
| 1225 } | |
| 1226 | |
| 1227 | |
| 1228 static char * | |
| 1229 ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 1230 { | |
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1231 ngx_http_xslt_filter_loc_conf_t *prev = parent; |
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1232 ngx_http_xslt_filter_loc_conf_t *conf = child; |
| 2139 | 1233 |
| 1234 if (conf->dtd == NULL) { | |
| 1235 conf->dtd = prev->dtd; | |
| 1236 } | |
| 1237 | |
| 1238 if (conf->sheets.nelts == 0) { | |
| 1239 conf->sheets = prev->sheets; | |
| 1240 } | |
| 1241 | |
| 2148 | 1242 if (ngx_http_merge_types(cf, conf->types_keys, &conf->types, |
| 1243 prev->types_keys, &prev->types, | |
| 1244 ngx_http_xslt_default_types) | |
| 2139 | 1245 != NGX_OK) |
| 1246 { | |
| 1247 return NGX_CONF_ERROR; | |
| 1248 } | |
| 1249 | |
| 1250 return NGX_CONF_OK; | |
| 1251 } | |
| 1252 | |
| 1253 | |
| 1254 static ngx_int_t | |
| 1255 ngx_http_xslt_filter_init(ngx_conf_t *cf) | |
| 1256 { | |
| 1257 xmlInitParser(); | |
| 1258 | |
| 1259 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
| 1260 ngx_http_top_header_filter = ngx_http_xslt_header_filter; | |
| 1261 | |
| 1262 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
| 1263 ngx_http_top_body_filter = ngx_http_xslt_body_filter; | |
| 1264 | |
| 1265 return NGX_OK; | |
| 1266 } | |
| 1267 | |
| 1268 | |
| 1269 static void | |
| 1270 ngx_http_xslt_filter_exit(ngx_cycle_t *cycle) | |
| 1271 { | |
| 1272 xsltCleanupGlobals(); | |
| 1273 xmlCleanupParser(); | |
| 1274 } |