Mercurial > hg > nginx
annotate src/http/modules/ngx_http_xslt_filter_module.c @ 2821:26e06e009ced
allow to pass image filter errors via the same location where the filter is set
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Fri, 08 May 2009 14:52:50 +0000 |
| parents | 3daf68f2efe3 |
| children | 896db5a09bd2 |
| 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 | |
| 2299 | 18 #if (NGX_HAVE_EXSLT) |
| 19 #include <libexslt/exslt.h> | |
| 20 #endif | |
| 21 | |
| 2139 | 22 |
| 23 #ifndef NGX_HTTP_XSLT_REUSE_DTD | |
| 24 #define NGX_HTTP_XSLT_REUSE_DTD 1 | |
| 25 #endif | |
| 26 | |
| 27 | |
| 28 typedef struct { | |
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29 u_char *name; |
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30 void *data; |
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31 } ngx_http_xslt_file_t; |
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32 |
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33 |
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34 typedef struct { |
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35 ngx_array_t dtd_files; /* ngx_http_xslt_file_t */ |
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36 ngx_array_t sheet_files; /* ngx_http_xslt_file_t */ |
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37 } ngx_http_xslt_filter_main_conf_t; |
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38 |
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39 |
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40 typedef struct { |
| 2139 | 41 xsltStylesheetPtr stylesheet; |
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42 ngx_array_t params; /* ngx_http_complex_value_t */ |
| 2139 | 43 } ngx_http_xslt_sheet_t; |
| 44 | |
| 45 | |
| 46 typedef struct { | |
| 47 xmlDtdPtr dtd; | |
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48 ngx_array_t sheets; /* ngx_http_xslt_sheet_t */ |
| 2148 | 49 ngx_hash_t types; |
| 50 ngx_array_t *types_keys; | |
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51 } ngx_http_xslt_filter_loc_conf_t; |
| 2139 | 52 |
| 53 | |
| 54 typedef struct { | |
| 55 xmlDocPtr doc; | |
| 56 xmlParserCtxtPtr ctxt; | |
| 57 xmlSAXHandler *sax; | |
| 58 ngx_http_request_t *request; | |
| 59 ngx_array_t params; | |
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60 |
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61 ngx_uint_t done; /* unsigned done:1; */ |
| 2139 | 62 } ngx_http_xslt_filter_ctx_t; |
| 63 | |
| 64 | |
| 65 static ngx_int_t ngx_http_xslt_send(ngx_http_request_t *r, | |
| 66 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b); | |
| 67 static ngx_int_t ngx_http_xslt_add_chunk(ngx_http_request_t *r, | |
| 68 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b); | |
| 69 | |
| 70 | |
| 71 static void ngx_http_xslt_sax_start_document(void *data); | |
| 72 static void ngx_http_xslt_sax_end_document(void *data); | |
| 73 static void ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name, | |
| 74 const xmlChar *externalId, const xmlChar *systemId); | |
| 75 static void ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
| 76 const xmlChar *externalId, const xmlChar *systemId); | |
| 77 static void ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name, | |
| 78 int type, const xmlChar *publicId, const xmlChar *systemId, | |
| 79 xmlChar *content); | |
| 80 static void ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem, | |
| 81 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue, | |
| 82 xmlEnumerationPtr tree); | |
| 83 static void ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name, | |
| 84 int type, xmlElementContentPtr content); | |
| 85 static void ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name, | |
| 86 const xmlChar *publicId, const xmlChar *systemId); | |
| 87 static void ngx_http_xslt_sax_unparsed_entity_decl(void *data, | |
| 88 const xmlChar *name, const xmlChar *publicId, const xmlChar *systemId, | |
| 89 const xmlChar *notationName); | |
| 90 static void ngx_http_xslt_sax_start_element(void *data, | |
| 91 const xmlChar *localname, const xmlChar *prefix, const xmlChar *URI, | |
| 92 int nb_namespaces, const xmlChar **namespaces, int nb_attributes, | |
| 93 int nb_defaulted, const xmlChar **attributes); | |
| 94 static void ngx_http_xslt_sax_end_element(void *data, | |
| 95 const xmlChar * localname ATTRIBUTE_UNUSED, | |
| 96 const xmlChar * prefix ATTRIBUTE_UNUSED, | |
| 97 const xmlChar * URI ATTRIBUTE_UNUSED); | |
| 98 static void ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len); | |
| 99 static void ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p, | |
| 100 int len); | |
| 101 static xmlEntityPtr ngx_http_xslt_sax_get_entity(void *data, | |
| 102 const xmlChar *name); | |
| 103 static xmlEntityPtr ngx_http_xslt_sax_get_parameter_entity(void *data, | |
| 104 const xmlChar *name); | |
| 105 static xmlParserInputPtr ngx_http_xslt_sax_resolve_entity(void *data, | |
| 106 const xmlChar *publicId, const xmlChar *systemId); | |
| 107 static void ngx_http_xslt_sax_reference(void *data, const xmlChar *name); | |
| 108 static void ngx_http_xslt_sax_comment(void *data, const xmlChar *value); | |
| 109 static void ngx_http_xslt_sax_processing_instruction(void *data, | |
| 110 const xmlChar *target, const xmlChar *pidata); | |
| 111 static int ngx_http_xslt_sax_is_standalone(void *data); | |
| 112 static int ngx_http_xslt_sax_has_internal_subset(void *data); | |
| 113 static int ngx_http_xslt_sax_has_external_subset(void *data); | |
| 114 static void ngx_cdecl ngx_http_xslt_sax_error(void *data, const char *msg, ...); | |
| 115 | |
| 116 | |
| 117 static ngx_buf_t *ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
| 118 ngx_http_xslt_filter_ctx_t *ctx); | |
| 119 static ngx_int_t ngx_http_xslt_params(ngx_http_request_t *r, | |
| 120 ngx_http_xslt_filter_ctx_t *ctx, ngx_array_t *params); | |
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121 static u_char *ngx_http_xslt_content_type(xsltStylesheetPtr s); |
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122 static u_char *ngx_http_xslt_encoding(xsltStylesheetPtr s); |
| 2139 | 123 static void ngx_http_xslt_cleanup(void *data); |
| 124 | |
| 125 static char *ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 126 void *conf); | |
| 127 static char *ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 128 void *conf); | |
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129 static void ngx_http_xslt_cleanup_dtd(void *data); |
| 2139 | 130 static void ngx_http_xslt_cleanup_stylesheet(void *data); |
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131 static void *ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf); |
| 2139 | 132 static void *ngx_http_xslt_filter_create_conf(ngx_conf_t *cf); |
| 133 static char *ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, | |
| 134 void *child); | |
| 135 static ngx_int_t ngx_http_xslt_filter_init(ngx_conf_t *cf); | |
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136 static void ngx_http_xslt_filter_exit(ngx_cycle_t *cycle); |
| 2139 | 137 |
| 138 | |
| 139 ngx_str_t ngx_http_xslt_default_types[] = { | |
| 140 ngx_string("text/xml"), | |
| 141 ngx_null_string | |
| 142 }; | |
| 143 | |
| 144 | |
| 145 static ngx_command_t ngx_http_xslt_filter_commands[] = { | |
| 146 | |
| 147 { ngx_string("xml_entities"), | |
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148 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| 2139 | 149 ngx_http_xslt_entities, |
| 150 NGX_HTTP_LOC_CONF_OFFSET, | |
| 151 0, | |
| 152 NULL }, | |
| 153 | |
| 154 { ngx_string("xslt_stylesheet"), | |
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155 NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| 2139 | 156 ngx_http_xslt_stylesheet, |
| 157 NGX_HTTP_LOC_CONF_OFFSET, | |
| 158 0, | |
| 159 NULL }, | |
| 160 | |
| 161 { ngx_string("xslt_types"), | |
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162 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| 2139 | 163 ngx_http_types_slot, |
| 164 NGX_HTTP_LOC_CONF_OFFSET, | |
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165 offsetof(ngx_http_xslt_filter_loc_conf_t, types_keys), |
| 2139 | 166 &ngx_http_xslt_default_types[0] }, |
| 167 | |
| 168 ngx_null_command | |
| 169 }; | |
| 170 | |
| 171 | |
| 172 static ngx_http_module_t ngx_http_xslt_filter_module_ctx = { | |
| 173 NULL, /* preconfiguration */ | |
| 174 ngx_http_xslt_filter_init, /* postconfiguration */ | |
| 175 | |
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176 ngx_http_xslt_filter_create_main_conf, /* create main configuration */ |
| 2139 | 177 NULL, /* init main configuration */ |
| 178 | |
| 179 NULL, /* create server configuration */ | |
| 180 NULL, /* merge server configuration */ | |
| 181 | |
| 182 ngx_http_xslt_filter_create_conf, /* create location configuration */ | |
| 183 ngx_http_xslt_filter_merge_conf /* merge location configuration */ | |
| 184 }; | |
| 185 | |
| 186 | |
| 187 ngx_module_t ngx_http_xslt_filter_module = { | |
| 188 NGX_MODULE_V1, | |
| 189 &ngx_http_xslt_filter_module_ctx, /* module context */ | |
| 190 ngx_http_xslt_filter_commands, /* module directives */ | |
| 191 NGX_HTTP_MODULE, /* module type */ | |
| 192 NULL, /* init master */ | |
| 193 NULL, /* init module */ | |
| 194 NULL, /* init process */ | |
| 195 NULL, /* init thread */ | |
| 196 NULL, /* exit thread */ | |
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197 ngx_http_xslt_filter_exit, /* exit process */ |
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198 ngx_http_xslt_filter_exit, /* exit master */ |
| 2139 | 199 NGX_MODULE_V1_PADDING |
| 200 }; | |
| 201 | |
| 202 | |
| 203 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; | |
| 204 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; | |
| 205 | |
| 206 | |
| 207 static ngx_int_t | |
| 208 ngx_http_xslt_header_filter(ngx_http_request_t *r) | |
| 209 { | |
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210 ngx_http_xslt_filter_ctx_t *ctx; |
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211 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 212 |
| 213 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 214 "xslt filter header"); | |
| 215 | |
| 216 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) { | |
| 217 return ngx_http_next_header_filter(r); | |
| 218 } | |
| 219 | |
| 220 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 221 | |
| 222 if (conf->sheets.nelts == 0 | |
| 2148 | 223 || ngx_http_test_content_type(r, &conf->types) == NULL) |
| 2139 | 224 { |
| 225 return ngx_http_next_header_filter(r); | |
| 226 } | |
| 227 | |
| 228 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); | |
| 229 | |
| 230 if (ctx) { | |
| 231 return ngx_http_next_header_filter(r); | |
| 232 } | |
| 233 | |
| 234 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_xslt_filter_ctx_t)); | |
| 235 if (ctx == NULL) { | |
| 236 return NGX_ERROR; | |
| 237 } | |
| 238 | |
| 239 ngx_http_set_ctx(r, ctx, ngx_http_xslt_filter_module); | |
| 240 | |
| 241 r->main_filter_need_in_memory = 1; | |
| 242 | |
| 243 return NGX_OK; | |
| 244 } | |
| 245 | |
| 246 | |
| 247 static ngx_int_t | |
| 248 ngx_http_xslt_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
| 249 { | |
| 250 ngx_chain_t *cl; | |
| 251 ngx_http_xslt_filter_ctx_t *ctx; | |
| 252 | |
| 253 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 254 "xslt filter body"); | |
| 255 | |
| 256 if (in == NULL) { | |
| 257 return ngx_http_next_body_filter(r, in); | |
| 258 } | |
| 259 | |
| 260 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); | |
| 261 | |
| 262 if (ctx == NULL || ctx->done) { | |
| 263 return ngx_http_next_body_filter(r, in); | |
| 264 } | |
| 265 | |
| 266 for (cl = in; cl; cl = cl->next) { | |
| 267 | |
| 268 if (ngx_http_xslt_add_chunk(r, ctx, cl->buf) != NGX_OK) { | |
| 269 | |
| 270 if (ctx->ctxt->myDoc){ | |
| 271 | |
| 272 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 273 ctx->ctxt->myDoc->extSubset = NULL; | |
| 274 #endif | |
| 275 xmlFreeDoc(ctx->ctxt->myDoc); | |
| 276 } | |
| 277 | |
| 278 xmlFreeParserCtxt(ctx->ctxt); | |
| 279 | |
| 280 return ngx_http_xslt_send(r, ctx, NULL); | |
| 281 } | |
| 282 | |
| 283 if (cl->buf->last_buf) { | |
| 284 | |
| 285 ctx->doc = ctx->ctxt->myDoc; | |
| 286 | |
| 287 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 288 ctx->doc->extSubset = NULL; | |
| 289 #endif | |
| 290 | |
| 291 xmlFreeParserCtxt(ctx->ctxt); | |
| 292 | |
| 293 if (ctx->ctxt->wellFormed) { | |
| 294 return ngx_http_xslt_send(r, ctx, | |
| 295 ngx_http_xslt_apply_stylesheet(r, ctx)); | |
| 296 } | |
| 297 | |
| 298 xmlFreeDoc(ctx->doc); | |
| 299 | |
| 300 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 301 "not well formed XML document"); | |
| 302 | |
| 303 return ngx_http_xslt_send(r, ctx, NULL); | |
| 304 } | |
| 305 } | |
| 306 | |
| 307 return NGX_OK; | |
| 308 } | |
| 309 | |
| 310 | |
| 311 static ngx_int_t | |
| 312 ngx_http_xslt_send(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 313 ngx_buf_t *b) | |
| 314 { | |
| 315 ngx_int_t rc; | |
| 316 ngx_chain_t out; | |
| 317 ngx_pool_cleanup_t *cln; | |
| 318 | |
| 319 ctx->done = 1; | |
| 320 | |
| 321 if (b == NULL) { | |
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322 return ngx_http_filter_finalize_request(r, NULL, |
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323 NGX_HTTP_INTERNAL_SERVER_ERROR); |
| 2139 | 324 } |
| 325 | |
| 326 cln = ngx_pool_cleanup_add(r->pool, 0); | |
| 327 | |
| 328 if (cln == NULL) { | |
| 329 ngx_free(b->pos); | |
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330 return ngx_http_filter_finalize_request(r, NULL, |
| 2139 | 331 NGX_HTTP_INTERNAL_SERVER_ERROR); |
| 332 } | |
| 333 | |
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334 if (r == r->main) { |
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335 r->headers_out.content_length_n = b->last - b->pos; |
| 2139 | 336 |
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337 if (r->headers_out.content_length) { |
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338 r->headers_out.content_length->hash = 0; |
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339 r->headers_out.content_length = NULL; |
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340 } |
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341 |
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342 ngx_http_clear_last_modified(r); |
| 2139 | 343 } |
| 344 | |
| 345 rc = ngx_http_next_header_filter(r); | |
| 346 | |
| 347 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
| 348 ngx_free(b->pos); | |
| 349 return rc; | |
| 350 } | |
| 351 | |
| 352 cln->handler = ngx_http_xslt_cleanup; | |
| 353 cln->data = b->pos; | |
| 354 | |
| 355 out.buf = b; | |
| 356 out.next = NULL; | |
| 357 | |
| 358 return ngx_http_next_body_filter(r, &out); | |
| 359 } | |
| 360 | |
| 361 | |
| 362 static ngx_int_t | |
| 363 ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 364 ngx_buf_t *b) | |
| 365 { | |
| 366 int err; | |
| 367 xmlSAXHandler *sax; | |
| 368 xmlParserCtxtPtr ctxt; | |
| 369 | |
| 370 if (ctx->ctxt == NULL) { | |
| 371 | |
| 372 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL); | |
| 373 if (ctxt == NULL) { | |
| 374 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 375 "xmlCreatePushParserCtxt() failed"); | |
| 376 return NGX_ERROR; | |
| 377 } | |
| 378 | |
| 379 ctx->sax = ngx_palloc(r->pool, sizeof(xmlSAXHandler)); | |
| 380 if (ctx->sax == NULL) { | |
| 381 return NGX_ERROR; | |
| 382 } | |
| 383 | |
| 384 sax = ctxt->sax; | |
| 385 | |
| 386 ngx_memcpy(ctx->sax, sax, sizeof(xmlSAXHandler)); | |
| 387 | |
| 388 sax->startDocument = ngx_http_xslt_sax_start_document; | |
| 389 sax->endDocument = ngx_http_xslt_sax_end_document; | |
| 390 | |
| 391 sax->internalSubset = ngx_http_xslt_sax_internal_subset; | |
| 392 sax->externalSubset = ngx_http_xslt_sax_external_subset; | |
| 393 sax->entityDecl = ngx_http_xslt_sax_entity_decl; | |
| 394 sax->attributeDecl = ngx_http_xslt_sax_attribute_decl; | |
| 395 sax->elementDecl = ngx_http_xslt_sax_element_decl; | |
| 396 sax->notationDecl = ngx_http_xslt_sax_notation_decl; | |
| 397 sax->unparsedEntityDecl = ngx_http_xslt_sax_unparsed_entity_decl; | |
| 398 sax->setDocumentLocator = NULL; | |
| 399 | |
| 400 sax->startElementNs = ngx_http_xslt_sax_start_element; | |
| 401 sax->endElementNs = ngx_http_xslt_sax_end_element; | |
| 402 | |
| 403 sax->characters = ngx_http_xslt_sax_characters; | |
| 404 sax->ignorableWhitespace = ngx_http_xslt_sax_characters; | |
| 405 sax->cdataBlock = ngx_http_xslt_sax_cdata_block; | |
| 406 sax->getEntity = ngx_http_xslt_sax_get_entity; | |
| 407 sax->resolveEntity = ngx_http_xslt_sax_resolve_entity; | |
| 408 sax->getParameterEntity = ngx_http_xslt_sax_get_parameter_entity; | |
| 409 sax->reference = ngx_http_xslt_sax_reference; | |
| 410 sax->comment = ngx_http_xslt_sax_comment; | |
| 411 sax->processingInstruction = ngx_http_xslt_sax_processing_instruction; | |
| 412 | |
| 413 sax->isStandalone = ngx_http_xslt_sax_is_standalone; | |
| 414 sax->hasInternalSubset = ngx_http_xslt_sax_has_internal_subset; | |
| 415 sax->hasExternalSubset = ngx_http_xslt_sax_has_external_subset; | |
| 416 | |
| 417 sax->warning = NULL; | |
| 418 sax->error = ngx_http_xslt_sax_error; | |
| 419 sax->fatalError = ngx_http_xslt_sax_error; | |
| 420 | |
| 421 ctxt->userData = ctx; | |
| 422 | |
| 423 ctxt->replaceEntities = 1; | |
| 424 ctxt->loadsubset = 1; | |
| 425 | |
| 426 ctx->ctxt = ctxt; | |
| 427 ctx->request = r; | |
| 428 } | |
| 429 | |
| 430 err = xmlParseChunk(ctx->ctxt, (char *) b->pos, | |
| 431 (int) (b->last - b->pos), b->last_buf); | |
| 432 | |
| 433 if (err == 0) { | |
| 434 b->pos = b->last; | |
| 435 return NGX_OK; | |
| 436 } | |
| 437 | |
| 438 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 439 "xmlParseChunk() failed, error:%d", err); | |
| 440 | |
| 441 return NGX_ERROR; | |
| 442 } | |
| 443 | |
| 444 | |
| 445 static void | |
| 446 ngx_http_xslt_sax_start_document(void *data) | |
| 447 { | |
| 448 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 449 | |
| 450 ctx->sax->startDocument(ctx->ctxt); | |
| 451 } | |
| 452 | |
| 453 | |
| 454 static void | |
| 455 ngx_http_xslt_sax_end_document(void *data) | |
| 456 { | |
| 457 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 458 | |
| 459 ctx->sax->endDocument(ctx->ctxt); | |
| 460 } | |
| 461 | |
| 462 | |
| 463 static void | |
| 464 ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name, | |
| 465 const xmlChar *externalId, const xmlChar *systemId) | |
| 466 { | |
| 467 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 468 | |
| 469 ctx->sax->internalSubset(ctx->ctxt, name, externalId, systemId); | |
| 470 } | |
| 471 | |
| 472 | |
| 473 static void | |
| 474 ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
| 475 const xmlChar *externalId, const xmlChar *systemId) | |
| 476 { | |
| 477 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 478 | |
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479 xmlDocPtr doc; |
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480 xmlDtdPtr dtd; |
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481 ngx_http_request_t *r; |
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482 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 483 |
| 484 r = ctx->request; | |
| 485 | |
| 486 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 487 | |
| 488 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 489 "xslt filter extSubset: \"%s\" \"%s\" \"%s\"", | |
| 490 name ? name : (xmlChar *) "", | |
| 491 externalId ? externalId : (xmlChar *) "", | |
| 492 systemId ? systemId : (xmlChar *) ""); | |
| 493 | |
| 494 doc = ctx->ctxt->myDoc; | |
| 495 | |
| 496 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 497 | |
| 498 dtd = conf->dtd; | |
| 499 | |
| 500 #else | |
| 501 | |
| 502 dtd = xmlCopyDtd(conf->dtd); | |
| 503 if (dtd == NULL) { | |
| 504 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 505 "xmlCopyDtd() failed"); | |
| 506 return; | |
| 507 } | |
| 508 | |
| 509 if (doc->children == NULL) { | |
| 510 xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd); | |
| 511 | |
| 512 } else { | |
| 513 xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd); | |
| 514 } | |
| 515 | |
| 516 #endif | |
| 517 | |
| 518 doc->extSubset = dtd; | |
| 519 } | |
| 520 | |
| 521 | |
| 522 static void | |
| 523 ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name, int type, | |
| 524 const xmlChar *publicId, const xmlChar *systemId, xmlChar *content) | |
| 525 { | |
| 526 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 527 | |
| 528 ctx->sax->entityDecl(ctx->ctxt, name, type, publicId, systemId, content); | |
| 529 } | |
| 530 | |
| 531 | |
| 532 static void | |
| 533 ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem, | |
| 534 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue, | |
| 535 xmlEnumerationPtr tree) | |
| 536 { | |
| 537 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 538 | |
| 539 ctx->sax->attributeDecl(ctx->ctxt, elem, fullname, type, def, defaultValue, | |
| 540 tree); | |
| 541 } | |
| 542 | |
| 543 | |
| 544 static void | |
| 545 ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name, int type, | |
| 546 xmlElementContentPtr content) | |
| 547 { | |
| 548 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 549 | |
| 550 ctx->sax->elementDecl(ctx->ctxt, name, type, content); | |
| 551 } | |
| 552 | |
| 553 | |
| 554 static void | |
| 555 ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name, | |
| 556 const xmlChar *publicId, const xmlChar *systemId) | |
| 557 { | |
| 558 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 559 | |
| 560 ctx->sax->notationDecl(ctx->ctxt, name, publicId, systemId); | |
| 561 } | |
| 562 | |
| 563 | |
| 564 static void | |
| 565 ngx_http_xslt_sax_unparsed_entity_decl(void *data, const xmlChar *name, | |
| 566 const xmlChar *publicId, const xmlChar *systemId, | |
| 567 const xmlChar *notationName) | |
| 568 { | |
| 569 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 570 | |
| 571 ctx->sax->unparsedEntityDecl(ctx->ctxt, name, publicId, systemId, | |
| 572 notationName); | |
| 573 } | |
| 574 | |
| 575 | |
| 576 static void | |
| 577 ngx_http_xslt_sax_start_element(void *data, const xmlChar *localname, | |
| 578 const xmlChar *prefix, const xmlChar *URI, int nb_namespaces, | |
| 579 const xmlChar **namespaces, int nb_attributes, int nb_defaulted, | |
| 580 const xmlChar **attributes) | |
| 581 { | |
| 582 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 583 | |
| 584 ctx->sax->startElementNs(ctx->ctxt, localname, prefix, URI, nb_namespaces, | |
| 585 namespaces, nb_attributes, nb_defaulted, attributes); | |
| 586 } | |
| 587 | |
| 588 | |
| 589 static void | |
| 590 ngx_http_xslt_sax_end_element(void *data, | |
| 591 const xmlChar * localname ATTRIBUTE_UNUSED, | |
| 592 const xmlChar * prefix ATTRIBUTE_UNUSED, | |
| 593 const xmlChar * URI ATTRIBUTE_UNUSED) | |
| 594 { | |
| 595 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 596 | |
| 597 ctx->sax->endElementNs(ctx->ctxt, localname, prefix, URI); | |
| 598 } | |
| 599 | |
| 600 | |
| 601 static void | |
| 602 ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len) | |
| 603 { | |
| 604 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 605 | |
| 606 ctx->sax->characters(ctx->ctxt, p, len); | |
| 607 } | |
| 608 | |
| 609 | |
| 610 static void | |
| 611 ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p, int len) | |
| 612 { | |
| 613 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 614 | |
| 615 ctx->sax->cdataBlock(ctx->ctxt, p, len); | |
| 616 } | |
| 617 | |
| 618 | |
| 619 static xmlEntityPtr | |
| 620 ngx_http_xslt_sax_get_entity(void *data, const xmlChar *name) | |
| 621 { | |
| 622 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 623 | |
| 624 return ctx->sax->getEntity(ctx->ctxt, name); | |
| 625 } | |
| 626 | |
| 627 | |
| 628 static xmlEntityPtr | |
| 629 ngx_http_xslt_sax_get_parameter_entity(void *data, const xmlChar *name) | |
| 630 { | |
| 631 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 632 | |
| 633 return ctx->sax->getParameterEntity(ctx->ctxt, name); | |
| 634 } | |
| 635 | |
| 636 | |
| 637 static xmlParserInputPtr | |
| 638 ngx_http_xslt_sax_resolve_entity(void *data, const xmlChar *publicId, | |
| 639 const xmlChar *systemId) | |
| 640 { | |
| 641 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 642 | |
| 643 return ctx->sax->resolveEntity(ctx->ctxt, publicId, systemId); | |
| 644 } | |
| 645 | |
| 646 | |
| 647 static void | |
| 648 ngx_http_xslt_sax_reference(void *data, const xmlChar *name) | |
| 649 { | |
| 650 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 651 | |
| 652 ctx->sax->reference(ctx->ctxt, name); | |
| 653 } | |
| 654 | |
| 655 | |
| 656 static void | |
| 657 ngx_http_xslt_sax_comment(void *data, const xmlChar *value) | |
| 658 { | |
| 659 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 660 | |
| 661 ctx->sax->comment(ctx->ctxt, value); | |
| 662 } | |
| 663 | |
| 664 | |
| 665 static void | |
| 666 ngx_http_xslt_sax_processing_instruction(void *data, const xmlChar *target, | |
| 667 const xmlChar *pidata) | |
| 668 { | |
| 669 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 670 | |
| 671 ctx->sax->processingInstruction(ctx->ctxt, target, pidata); | |
| 672 } | |
| 673 | |
| 674 | |
| 675 static int | |
| 676 ngx_http_xslt_sax_is_standalone(void *data) | |
| 677 { | |
| 678 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 679 | |
| 680 return ctx->sax->isStandalone(ctx->ctxt); | |
| 681 } | |
| 682 | |
| 683 | |
| 684 static int | |
| 685 ngx_http_xslt_sax_has_internal_subset(void *data) | |
| 686 { | |
| 687 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 688 | |
| 689 return ctx->sax->hasInternalSubset(ctx->ctxt); | |
| 690 } | |
| 691 | |
| 692 | |
| 693 static int | |
| 694 ngx_http_xslt_sax_has_external_subset(void *data) | |
| 695 { | |
| 696 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 697 | |
| 698 return ctx->sax->hasExternalSubset(ctx->ctxt); | |
| 699 } | |
| 700 | |
| 701 | |
| 702 static void ngx_cdecl | |
| 703 ngx_http_xslt_sax_error(void *data, const char *msg, ...) | |
| 704 { | |
| 705 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 706 | |
| 707 size_t n; | |
| 708 va_list args; | |
| 709 u_char buf[NGX_MAX_ERROR_STR]; | |
| 710 | |
| 711 buf[0] = '\0'; | |
| 712 | |
| 713 va_start(args, msg); | |
| 714 n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args); | |
| 715 va_end(args); | |
| 716 | |
| 717 while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ } | |
| 718 | |
| 719 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
| 720 "libxml2 error: \"%*s\"", n, buf); | |
| 721 } | |
| 722 | |
| 723 | |
| 724 static ngx_buf_t * | |
| 725 ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
| 726 ngx_http_xslt_filter_ctx_t *ctx) | |
| 727 { | |
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728 int len, rc, doc_type; |
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729 u_char *type, *encoding; |
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730 ngx_buf_t *b; |
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731 ngx_uint_t i; |
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732 xmlChar *buf; |
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733 xmlDocPtr doc, res; |
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734 ngx_http_xslt_sheet_t *sheet; |
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735 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 736 |
| 737 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 738 sheet = conf->sheets.elts; | |
| 739 doc = ctx->doc; | |
| 740 | |
| 741 /* preallocate array for 4 params */ | |
| 742 | |
| 743 if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *)) | |
| 744 != NGX_OK) | |
| 745 { | |
| 746 xmlFreeDoc(doc); | |
| 747 return NULL; | |
| 748 } | |
| 749 | |
| 750 for (i = 0; i < conf->sheets.nelts; i++) { | |
| 751 | |
| 752 if (ngx_http_xslt_params(r, ctx, &sheet[i].params) != NGX_OK) { | |
| 753 xmlFreeDoc(doc); | |
| 754 return NULL; | |
| 755 } | |
| 756 | |
| 757 res = xsltApplyStylesheet(sheet[i].stylesheet, doc, ctx->params.elts); | |
| 758 | |
| 759 xmlFreeDoc(doc); | |
| 760 | |
| 761 if (res == NULL) { | |
| 762 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 763 "xsltApplyStylesheet() failed"); | |
| 764 return NULL; | |
| 765 } | |
| 766 | |
| 767 doc = res; | |
| 768 | |
| 769 /* reset array elements */ | |
| 770 ctx->params.nelts = 0; | |
| 771 } | |
| 772 | |
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773 /* there must be at least one stylesheet */ |
| 2139 | 774 |
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775 if (r == r->main) { |
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776 type = ngx_http_xslt_content_type(sheet[i - 1].stylesheet); |
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777 |
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778 } else { |
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779 type = NULL; |
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780 } |
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781 |
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782 encoding = ngx_http_xslt_encoding(sheet[i - 1].stylesheet); |
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783 doc_type = doc->type; |
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784 |
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785 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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786 "xslt filter type: %d t:%s e:%s", |
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|
787 doc_type, type ? type : (u_char *) "(null)", |
|
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788 encoding ? encoding : (u_char *) "(null)"); |
| 2139 | 789 |
| 790 rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet); | |
| 791 | |
| 792 xmlFreeDoc(doc); | |
| 793 | |
| 794 if (rc != 0) { | |
| 795 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 796 "xsltSaveResultToString() failed"); | |
| 797 return NULL; | |
| 798 } | |
| 799 | |
| 800 if (len == 0) { | |
| 801 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 802 "xsltSaveResultToString() returned zero-length result"); | |
| 803 return NULL; | |
| 804 } | |
| 805 | |
| 806 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
| 807 if (b == NULL) { | |
| 808 ngx_free(buf); | |
| 809 return NULL; | |
| 810 } | |
| 811 | |
| 812 b->pos = buf; | |
| 813 b->last = buf + len; | |
| 814 b->memory = 1; | |
| 815 b->last_buf = 1; | |
| 816 | |
|
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817 if (encoding) { |
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818 r->headers_out.charset.len = ngx_strlen(encoding); |
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819 r->headers_out.charset.data = encoding; |
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820 } |
|
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821 |
|
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822 if (r != r->main) { |
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823 return b; |
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824 } |
|
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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 |
| 2139 | 840 return b; |
| 841 } | |
| 842 | |
| 843 | |
| 844 static ngx_int_t | |
| 845 ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 846 ngx_array_t *params) | |
| 847 { | |
|
2588
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848 u_char *p, *last, *value, *dst, *src, **s; |
|
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|
849 size_t len; |
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850 ngx_uint_t i; |
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851 ngx_str_t string; |
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|
852 ngx_http_complex_value_t *param; |
| 2139 | 853 |
| 854 param = params->elts; | |
| 855 | |
| 856 for (i = 0; i < params->nelts; i++) { | |
| 857 | |
|
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|
858 if (ngx_http_complex_value(r, ¶m[i], &string) != NGX_OK) { |
| 2139 | 859 return NGX_ERROR; |
| 860 } | |
| 861 | |
| 862 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 863 "xslt filter param: \"%s\"", string.data); | |
| 864 | |
| 865 p = string.data; | |
|
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|
866 last = string.data + string.len - 1; |
| 2139 | 867 |
| 868 while (p && *p) { | |
| 869 | |
| 870 value = p; | |
| 871 p = (u_char *) ngx_strchr(p, '='); | |
| 872 if (p == NULL) { | |
| 873 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 874 "invalid libxslt parameter \"%s\"", value); | |
| 875 return NGX_ERROR; | |
| 876 } | |
| 877 *p++ = '\0'; | |
| 878 | |
| 879 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 880 "xslt filter param name: \"%s\"", value); | |
| 881 | |
| 882 s = ngx_array_push(&ctx->params); | |
| 883 if (s == NULL) { | |
| 884 return NGX_ERROR; | |
| 885 } | |
| 886 | |
| 887 *s = value; | |
| 888 | |
| 889 value = p; | |
| 890 p = (u_char *) ngx_strchr(p, ':'); | |
| 891 | |
| 892 if (p) { | |
| 893 len = p - value; | |
| 894 *p++ = '\0'; | |
| 895 | |
| 896 } else { | |
| 897 len = last - value; | |
| 898 } | |
| 899 | |
| 900 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 901 "xslt filter param value: \"%s\"", value); | |
| 902 | |
| 903 dst = value; | |
| 904 src = value; | |
| 905 | |
| 906 ngx_unescape_uri(&dst, &src, len, 0); | |
| 907 | |
| 908 *dst = '\0'; | |
| 909 | |
| 910 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 911 "xslt filter param unescaped: \"%s\"", value); | |
| 912 | |
| 913 s = ngx_array_push(&ctx->params); | |
| 914 if (s == NULL) { | |
| 915 return NGX_ERROR; | |
| 916 } | |
| 917 | |
| 918 *s = value; | |
| 919 } | |
| 920 } | |
| 921 | |
| 922 s = ngx_array_push(&ctx->params); | |
| 923 if (s == NULL) { | |
| 924 return NGX_ERROR; | |
| 925 } | |
| 926 | |
| 927 *s = NULL; | |
| 928 | |
| 929 return NGX_OK; | |
| 930 } | |
| 931 | |
| 932 | |
|
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933 static u_char * |
|
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934 ngx_http_xslt_content_type(xsltStylesheetPtr s) |
|
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935 { |
|
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|
936 u_char *type; |
|
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|
937 |
|
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|
938 if (s->mediaType) { |
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939 return s->mediaType; |
|
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|
940 } |
|
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|
941 |
|
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|
942 for (s = s->imports; s; s = s->next) { |
|
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|
943 |
|
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|
944 type = ngx_http_xslt_content_type(s); |
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|
945 |
|
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|
946 if (type) { |
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947 return type; |
|
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|
948 } |
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|
949 } |
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|
950 |
|
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|
951 return NULL; |
|
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|
952 } |
|
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|
953 |
|
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|
954 |
|
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|
955 static u_char * |
|
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|
956 ngx_http_xslt_encoding(xsltStylesheetPtr s) |
|
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|
957 { |
|
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|
958 u_char *encoding; |
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|
959 |
|
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|
960 if (s->encoding) { |
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|
961 return s->encoding; |
|
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|
962 } |
|
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|
963 |
|
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|
964 for (s = s->imports; s; s = s->next) { |
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|
965 |
|
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|
966 encoding = ngx_http_xslt_encoding(s); |
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|
967 |
|
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|
968 if (encoding) { |
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|
969 return encoding; |
|
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|
970 } |
|
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|
971 } |
|
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|
972 |
|
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|
973 return NULL; |
|
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|
974 } |
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|
975 |
|
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|
976 |
| 2139 | 977 static void |
| 978 ngx_http_xslt_cleanup(void *data) | |
| 979 { | |
| 980 ngx_free(data); | |
| 981 } | |
| 982 | |
| 983 | |
| 984 static char * | |
| 985 ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 986 { | |
|
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987 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
| 2139 | 988 |
|
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989 ngx_str_t *value; |
|
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990 ngx_uint_t i; |
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|
991 ngx_pool_cleanup_t *cln; |
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992 ngx_http_xslt_file_t *file; |
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|
993 ngx_http_xslt_filter_main_conf_t *xmcf; |
| 2139 | 994 |
| 995 if (xlcf->dtd) { | |
| 996 return "is duplicate"; | |
| 997 } | |
| 998 | |
| 999 value = cf->args->elts; | |
| 1000 | |
|
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1001 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); |
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|
1002 |
|
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|
1003 file = xmcf->dtd_files.elts; |
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|
1004 for (i = 0; i < xmcf->dtd_files.nelts; i++) { |
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|
1005 if (ngx_strcmp(file[i].name, &value[1].data) == 0) { |
|
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|
1006 xlcf->dtd = file[i].data; |
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1007 return NGX_CONF_OK; |
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1008 } |
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1009 } |
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1010 |
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1011 cln = ngx_pool_cleanup_add(cf->pool, 0); |
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1012 if (cln == NULL) { |
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1013 return NGX_CONF_ERROR; |
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1014 } |
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1015 |
| 2139 | 1016 xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data); |
| 1017 | |
| 1018 if (xlcf->dtd == NULL) { | |
| 1019 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed"); | |
| 1020 return NGX_CONF_ERROR; | |
| 1021 } | |
| 1022 | |
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1023 cln->handler = ngx_http_xslt_cleanup_dtd; |
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1024 cln->data = xlcf->dtd; |
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1025 |
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1026 file = ngx_array_push(&xmcf->dtd_files); |
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1027 if (file == NULL) { |
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1028 return NGX_CONF_ERROR; |
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1029 } |
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1030 |
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1031 file->name = value[1].data; |
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1032 file->data = xlcf->dtd; |
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1033 |
| 2139 | 1034 return NGX_CONF_OK; |
| 1035 } | |
| 1036 | |
| 1037 | |
| 1038 | |
| 1039 static char * | |
| 1040 ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 1041 { | |
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1042 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
| 2139 | 1043 |
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1044 ngx_str_t *value; |
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1045 ngx_uint_t i, n; |
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1046 ngx_pool_cleanup_t *cln; |
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1047 ngx_http_xslt_file_t *file; |
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1048 ngx_http_xslt_sheet_t *sheet; |
|
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1049 ngx_http_complex_value_t *param; |
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1050 ngx_http_compile_complex_value_t ccv; |
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1051 ngx_http_xslt_filter_main_conf_t *xmcf; |
| 2139 | 1052 |
| 1053 value = cf->args->elts; | |
| 1054 | |
| 1055 if (xlcf->sheets.elts == NULL) { | |
| 1056 if (ngx_array_init(&xlcf->sheets, cf->pool, 1, | |
| 1057 sizeof(ngx_http_xslt_sheet_t)) | |
| 1058 != NGX_OK) | |
| 1059 { | |
| 1060 return NGX_CONF_ERROR; | |
| 1061 } | |
| 1062 } | |
| 1063 | |
| 1064 sheet = ngx_array_push(&xlcf->sheets); | |
| 1065 if (sheet == NULL) { | |
| 1066 return NGX_CONF_ERROR; | |
| 1067 } | |
| 1068 | |
| 1069 ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t)); | |
| 1070 | |
| 1071 if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) { | |
| 1072 return NGX_CONF_ERROR; | |
| 1073 } | |
| 1074 | |
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1075 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); |
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1076 |
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1077 file = xmcf->sheet_files.elts; |
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1078 for (i = 0; i < xmcf->sheet_files.nelts; i++) { |
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1079 if (ngx_strcmp(file[i].name, &value[1].data) == 0) { |
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1080 sheet->stylesheet = file[i].data; |
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1081 goto found; |
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1082 } |
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1083 } |
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1084 |
| 2139 | 1085 cln = ngx_pool_cleanup_add(cf->pool, 0); |
| 1086 if (cln == NULL) { | |
| 1087 return NGX_CONF_ERROR; | |
| 1088 } | |
| 1089 | |
| 1090 sheet->stylesheet = xsltParseStylesheetFile(value[1].data); | |
| 1091 if (sheet->stylesheet == NULL) { | |
| 1092 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, | |
| 1093 "xsltParseStylesheetFile(\"%s\") failed", | |
| 1094 value[1].data); | |
| 1095 return NGX_CONF_ERROR; | |
| 1096 } | |
| 1097 | |
| 1098 cln->handler = ngx_http_xslt_cleanup_stylesheet; | |
| 1099 cln->data = sheet->stylesheet; | |
| 1100 | |
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1101 file = ngx_array_push(&xmcf->sheet_files); |
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1102 if (file == NULL) { |
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1103 return NGX_CONF_ERROR; |
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1104 } |
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1105 |
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1106 file->name = value[1].data; |
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1107 file->data = sheet->stylesheet; |
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1108 |
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1109 found: |
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1110 |
| 2139 | 1111 n = cf->args->nelts; |
| 1112 | |
| 1113 if (n == 2) { | |
| 1114 return NGX_CONF_OK; | |
| 1115 } | |
| 1116 | |
| 1117 if (ngx_array_init(&sheet->params, cf->pool, n - 2, | |
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1118 sizeof(ngx_http_complex_value_t)) |
| 2139 | 1119 != NGX_OK) |
| 1120 { | |
| 1121 return NGX_CONF_ERROR; | |
| 1122 } | |
| 1123 | |
| 1124 for (i = 2; i < n; i++) { | |
| 1125 | |
| 1126 param = ngx_array_push(&sheet->params); | |
| 1127 if (param == NULL) { | |
| 1128 return NGX_CONF_ERROR; | |
| 1129 } | |
| 1130 | |
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1131 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
| 2139 | 1132 |
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1133 ccv.cf = cf; |
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1134 ccv.value = &value[i]; |
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1135 ccv.complex_value = param; |
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1136 ccv.zero = 1; |
| 2139 | 1137 |
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1138 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
| 2139 | 1139 return NGX_CONF_ERROR; |
| 1140 } | |
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1141 |
| 2139 | 1142 } |
| 1143 | |
| 1144 return NGX_CONF_OK; | |
| 1145 } | |
| 1146 | |
| 1147 | |
| 1148 static void | |
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1149 ngx_http_xslt_cleanup_dtd(void *data) |
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1150 { |
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1151 xmlFreeDtd(data); |
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1152 } |
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1153 |
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1154 |
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1155 static void |
| 2139 | 1156 ngx_http_xslt_cleanup_stylesheet(void *data) |
| 1157 { | |
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1158 xsltFreeStylesheet(data); |
| 2139 | 1159 } |
| 1160 | |
| 1161 | |
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1162 static void * |
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1163 ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf) |
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1164 { |
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1165 ngx_http_xslt_filter_main_conf_t *conf; |
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1166 |
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1167 conf = ngx_palloc(cf->pool, sizeof(ngx_http_xslt_filter_main_conf_t)); |
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1168 if (conf == NULL) { |
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1169 return NGX_CONF_ERROR; |
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1170 } |
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1171 |
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1172 if (ngx_array_init(&conf->dtd_files, cf->pool, 1, |
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1173 sizeof(ngx_http_xslt_file_t)) |
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1174 != NGX_OK) |
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1175 { |
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1176 return NULL; |
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1177 } |
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1178 |
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1179 if (ngx_array_init(&conf->sheet_files, cf->pool, 1, |
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1180 sizeof(ngx_http_xslt_file_t)) |
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1181 != NGX_OK) |
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1182 { |
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1183 return NULL; |
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1184 } |
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1185 |
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1186 return conf; |
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1187 } |
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1188 |
| 2139 | 1189 |
| 1190 static void * | |
| 1191 ngx_http_xslt_filter_create_conf(ngx_conf_t *cf) | |
| 1192 { | |
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1193 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 1194 |
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1195 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_loc_conf_t)); |
| 2139 | 1196 if (conf == NULL) { |
| 1197 return NGX_CONF_ERROR; | |
| 1198 } | |
| 1199 | |
| 1200 /* | |
| 1201 * set by ngx_pcalloc(): | |
| 1202 * | |
| 2148 | 1203 * conf->dtd = NULL; |
| 1204 * conf->sheets = { NULL }; | |
| 1205 * conf->types = { NULL }; | |
| 1206 * conf->types_keys = NULL; | |
| 2139 | 1207 */ |
| 1208 | |
| 1209 return conf; | |
| 1210 } | |
| 1211 | |
| 1212 | |
| 1213 static char * | |
| 1214 ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 1215 { | |
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1216 ngx_http_xslt_filter_loc_conf_t *prev = parent; |
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1217 ngx_http_xslt_filter_loc_conf_t *conf = child; |
| 2139 | 1218 |
| 1219 if (conf->dtd == NULL) { | |
| 1220 conf->dtd = prev->dtd; | |
| 1221 } | |
| 1222 | |
| 1223 if (conf->sheets.nelts == 0) { | |
| 1224 conf->sheets = prev->sheets; | |
| 1225 } | |
| 1226 | |
| 2148 | 1227 if (ngx_http_merge_types(cf, conf->types_keys, &conf->types, |
| 1228 prev->types_keys, &prev->types, | |
| 1229 ngx_http_xslt_default_types) | |
| 2139 | 1230 != NGX_OK) |
| 1231 { | |
| 1232 return NGX_CONF_ERROR; | |
| 1233 } | |
| 1234 | |
| 1235 return NGX_CONF_OK; | |
| 1236 } | |
| 1237 | |
| 1238 | |
| 1239 static ngx_int_t | |
| 1240 ngx_http_xslt_filter_init(ngx_conf_t *cf) | |
| 1241 { | |
| 1242 xmlInitParser(); | |
| 1243 | |
| 2299 | 1244 #if (NGX_HAVE_EXSLT) |
| 1245 exsltRegisterAll(); | |
| 1246 #endif | |
| 1247 | |
| 2139 | 1248 ngx_http_next_header_filter = ngx_http_top_header_filter; |
| 1249 ngx_http_top_header_filter = ngx_http_xslt_header_filter; | |
| 1250 | |
| 1251 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
| 1252 ngx_http_top_body_filter = ngx_http_xslt_body_filter; | |
| 1253 | |
| 1254 return NGX_OK; | |
| 1255 } | |
| 1256 | |
| 1257 | |
| 1258 static void | |
| 1259 ngx_http_xslt_filter_exit(ngx_cycle_t *cycle) | |
| 1260 { | |
| 1261 xsltCleanupGlobals(); | |
| 1262 xmlCleanupParser(); | |
| 1263 } |