Mercurial > hg > nginx
annotate src/http/modules/ngx_http_xslt_filter_module.c @ 2299:3e213fa0cbb3
exslt support
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 11 Nov 2008 15:22:24 +0000 |
| parents | fab3fa7339ff |
| children | a6954ce88b80 |
| 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 ngx_array_t *lengths; |
| 42 ngx_array_t *values; | |
| 43 } ngx_http_xslt_param_t; | |
| 44 | |
| 45 | |
| 46 typedef struct { | |
| 47 xsltStylesheetPtr stylesheet; | |
| 48 ngx_array_t params; /* ngx_http_xslt_param_t */ | |
| 49 } ngx_http_xslt_sheet_t; | |
| 50 | |
| 51 | |
| 52 typedef struct { | |
| 53 xmlDtdPtr dtd; | |
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54 ngx_array_t sheets; /* ngx_http_xslt_sheet_t */ |
| 2148 | 55 ngx_hash_t types; |
| 56 ngx_array_t *types_keys; | |
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57 } ngx_http_xslt_filter_loc_conf_t; |
| 2139 | 58 |
| 59 | |
| 60 typedef struct { | |
| 61 xmlDocPtr doc; | |
| 62 xmlParserCtxtPtr ctxt; | |
| 63 xmlSAXHandler *sax; | |
| 64 ngx_http_request_t *request; | |
| 65 ngx_array_t params; | |
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66 |
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67 ngx_uint_t done; /* unsigned done:1; */ |
| 2139 | 68 } ngx_http_xslt_filter_ctx_t; |
| 69 | |
| 70 | |
| 71 static ngx_int_t ngx_http_xslt_send(ngx_http_request_t *r, | |
| 72 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b); | |
| 73 static ngx_int_t ngx_http_xslt_filter_internal_error(ngx_http_request_t *r); | |
| 74 static ngx_int_t ngx_http_xslt_add_chunk(ngx_http_request_t *r, | |
| 75 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b); | |
| 76 | |
| 77 | |
| 78 static void ngx_http_xslt_sax_start_document(void *data); | |
| 79 static void ngx_http_xslt_sax_end_document(void *data); | |
| 80 static void ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name, | |
| 81 const xmlChar *externalId, const xmlChar *systemId); | |
| 82 static void ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
| 83 const xmlChar *externalId, const xmlChar *systemId); | |
| 84 static void ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name, | |
| 85 int type, const xmlChar *publicId, const xmlChar *systemId, | |
| 86 xmlChar *content); | |
| 87 static void ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem, | |
| 88 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue, | |
| 89 xmlEnumerationPtr tree); | |
| 90 static void ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name, | |
| 91 int type, xmlElementContentPtr content); | |
| 92 static void ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name, | |
| 93 const xmlChar *publicId, const xmlChar *systemId); | |
| 94 static void ngx_http_xslt_sax_unparsed_entity_decl(void *data, | |
| 95 const xmlChar *name, const xmlChar *publicId, const xmlChar *systemId, | |
| 96 const xmlChar *notationName); | |
| 97 static void ngx_http_xslt_sax_start_element(void *data, | |
| 98 const xmlChar *localname, const xmlChar *prefix, const xmlChar *URI, | |
| 99 int nb_namespaces, const xmlChar **namespaces, int nb_attributes, | |
| 100 int nb_defaulted, const xmlChar **attributes); | |
| 101 static void ngx_http_xslt_sax_end_element(void *data, | |
| 102 const xmlChar * localname ATTRIBUTE_UNUSED, | |
| 103 const xmlChar * prefix ATTRIBUTE_UNUSED, | |
| 104 const xmlChar * URI ATTRIBUTE_UNUSED); | |
| 105 static void ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len); | |
| 106 static void ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p, | |
| 107 int len); | |
| 108 static xmlEntityPtr ngx_http_xslt_sax_get_entity(void *data, | |
| 109 const xmlChar *name); | |
| 110 static xmlEntityPtr ngx_http_xslt_sax_get_parameter_entity(void *data, | |
| 111 const xmlChar *name); | |
| 112 static xmlParserInputPtr ngx_http_xslt_sax_resolve_entity(void *data, | |
| 113 const xmlChar *publicId, const xmlChar *systemId); | |
| 114 static void ngx_http_xslt_sax_reference(void *data, const xmlChar *name); | |
| 115 static void ngx_http_xslt_sax_comment(void *data, const xmlChar *value); | |
| 116 static void ngx_http_xslt_sax_processing_instruction(void *data, | |
| 117 const xmlChar *target, const xmlChar *pidata); | |
| 118 static int ngx_http_xslt_sax_is_standalone(void *data); | |
| 119 static int ngx_http_xslt_sax_has_internal_subset(void *data); | |
| 120 static int ngx_http_xslt_sax_has_external_subset(void *data); | |
| 121 static void ngx_cdecl ngx_http_xslt_sax_error(void *data, const char *msg, ...); | |
| 122 | |
| 123 | |
| 124 static ngx_buf_t *ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
| 125 ngx_http_xslt_filter_ctx_t *ctx); | |
| 126 static ngx_int_t ngx_http_xslt_params(ngx_http_request_t *r, | |
| 127 ngx_http_xslt_filter_ctx_t *ctx, ngx_array_t *params); | |
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128 static u_char *ngx_http_xslt_content_type(xsltStylesheetPtr s); |
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129 static u_char *ngx_http_xslt_encoding(xsltStylesheetPtr s); |
| 2139 | 130 static void ngx_http_xslt_cleanup(void *data); |
| 131 | |
| 132 static char *ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 133 void *conf); | |
| 134 static char *ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 135 void *conf); | |
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136 static void ngx_http_xslt_cleanup_dtd(void *data); |
| 2139 | 137 static void ngx_http_xslt_cleanup_stylesheet(void *data); |
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138 static void *ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf); |
| 2139 | 139 static void *ngx_http_xslt_filter_create_conf(ngx_conf_t *cf); |
| 140 static char *ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, | |
| 141 void *child); | |
| 142 static ngx_int_t ngx_http_xslt_filter_init(ngx_conf_t *cf); | |
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143 static void ngx_http_xslt_filter_exit(ngx_cycle_t *cycle); |
| 2139 | 144 |
| 145 | |
| 146 ngx_str_t ngx_http_xslt_default_types[] = { | |
| 147 ngx_string("text/xml"), | |
| 148 ngx_null_string | |
| 149 }; | |
| 150 | |
| 151 | |
| 152 static ngx_command_t ngx_http_xslt_filter_commands[] = { | |
| 153 | |
| 154 { ngx_string("xml_entities"), | |
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155 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| 2139 | 156 ngx_http_xslt_entities, |
| 157 NGX_HTTP_LOC_CONF_OFFSET, | |
| 158 0, | |
| 159 NULL }, | |
| 160 | |
| 161 { ngx_string("xslt_stylesheet"), | |
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162 NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| 2139 | 163 ngx_http_xslt_stylesheet, |
| 164 NGX_HTTP_LOC_CONF_OFFSET, | |
| 165 0, | |
| 166 NULL }, | |
| 167 | |
| 168 { ngx_string("xslt_types"), | |
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169 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| 2139 | 170 ngx_http_types_slot, |
| 171 NGX_HTTP_LOC_CONF_OFFSET, | |
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172 offsetof(ngx_http_xslt_filter_loc_conf_t, types_keys), |
| 2139 | 173 &ngx_http_xslt_default_types[0] }, |
| 174 | |
| 175 ngx_null_command | |
| 176 }; | |
| 177 | |
| 178 | |
| 179 static ngx_http_module_t ngx_http_xslt_filter_module_ctx = { | |
| 180 NULL, /* preconfiguration */ | |
| 181 ngx_http_xslt_filter_init, /* postconfiguration */ | |
| 182 | |
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183 ngx_http_xslt_filter_create_main_conf, /* create main configuration */ |
| 2139 | 184 NULL, /* init main configuration */ |
| 185 | |
| 186 NULL, /* create server configuration */ | |
| 187 NULL, /* merge server configuration */ | |
| 188 | |
| 189 ngx_http_xslt_filter_create_conf, /* create location configuration */ | |
| 190 ngx_http_xslt_filter_merge_conf /* merge location configuration */ | |
| 191 }; | |
| 192 | |
| 193 | |
| 194 ngx_module_t ngx_http_xslt_filter_module = { | |
| 195 NGX_MODULE_V1, | |
| 196 &ngx_http_xslt_filter_module_ctx, /* module context */ | |
| 197 ngx_http_xslt_filter_commands, /* module directives */ | |
| 198 NGX_HTTP_MODULE, /* module type */ | |
| 199 NULL, /* init master */ | |
| 200 NULL, /* init module */ | |
| 201 NULL, /* init process */ | |
| 202 NULL, /* init thread */ | |
| 203 NULL, /* exit thread */ | |
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204 ngx_http_xslt_filter_exit, /* exit process */ |
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205 ngx_http_xslt_filter_exit, /* exit master */ |
| 2139 | 206 NGX_MODULE_V1_PADDING |
| 207 }; | |
| 208 | |
| 209 | |
| 210 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; | |
| 211 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; | |
| 212 | |
| 213 | |
| 214 static ngx_int_t | |
| 215 ngx_http_xslt_header_filter(ngx_http_request_t *r) | |
| 216 { | |
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217 ngx_http_xslt_filter_ctx_t *ctx; |
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218 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 219 |
| 220 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 221 "xslt filter header"); | |
| 222 | |
| 223 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) { | |
| 224 return ngx_http_next_header_filter(r); | |
| 225 } | |
| 226 | |
| 227 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 228 | |
| 229 if (conf->sheets.nelts == 0 | |
| 2148 | 230 || ngx_http_test_content_type(r, &conf->types) == NULL) |
| 2139 | 231 { |
| 232 return ngx_http_next_header_filter(r); | |
| 233 } | |
| 234 | |
| 235 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); | |
| 236 | |
| 237 if (ctx) { | |
| 238 return ngx_http_next_header_filter(r); | |
| 239 } | |
| 240 | |
| 241 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_xslt_filter_ctx_t)); | |
| 242 if (ctx == NULL) { | |
| 243 return NGX_ERROR; | |
| 244 } | |
| 245 | |
| 246 ngx_http_set_ctx(r, ctx, ngx_http_xslt_filter_module); | |
| 247 | |
| 248 r->main_filter_need_in_memory = 1; | |
| 249 | |
| 250 return NGX_OK; | |
| 251 } | |
| 252 | |
| 253 | |
| 254 static ngx_int_t | |
| 255 ngx_http_xslt_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
| 256 { | |
| 257 ngx_chain_t *cl; | |
| 258 ngx_http_xslt_filter_ctx_t *ctx; | |
| 259 | |
| 260 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 261 "xslt filter body"); | |
| 262 | |
| 263 if (in == NULL) { | |
| 264 return ngx_http_next_body_filter(r, in); | |
| 265 } | |
| 266 | |
| 267 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); | |
| 268 | |
| 269 if (ctx == NULL || ctx->done) { | |
| 270 return ngx_http_next_body_filter(r, in); | |
| 271 } | |
| 272 | |
| 273 for (cl = in; cl; cl = cl->next) { | |
| 274 | |
| 275 if (ngx_http_xslt_add_chunk(r, ctx, cl->buf) != NGX_OK) { | |
| 276 | |
| 277 if (ctx->ctxt->myDoc){ | |
| 278 | |
| 279 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 280 ctx->ctxt->myDoc->extSubset = NULL; | |
| 281 #endif | |
| 282 xmlFreeDoc(ctx->ctxt->myDoc); | |
| 283 } | |
| 284 | |
| 285 xmlFreeParserCtxt(ctx->ctxt); | |
| 286 | |
| 287 return ngx_http_xslt_send(r, ctx, NULL); | |
| 288 } | |
| 289 | |
| 290 if (cl->buf->last_buf) { | |
| 291 | |
| 292 ctx->doc = ctx->ctxt->myDoc; | |
| 293 | |
| 294 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 295 ctx->doc->extSubset = NULL; | |
| 296 #endif | |
| 297 | |
| 298 xmlFreeParserCtxt(ctx->ctxt); | |
| 299 | |
| 300 if (ctx->ctxt->wellFormed) { | |
| 301 return ngx_http_xslt_send(r, ctx, | |
| 302 ngx_http_xslt_apply_stylesheet(r, ctx)); | |
| 303 } | |
| 304 | |
| 305 xmlFreeDoc(ctx->doc); | |
| 306 | |
| 307 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 308 "not well formed XML document"); | |
| 309 | |
| 310 return ngx_http_xslt_send(r, ctx, NULL); | |
| 311 } | |
| 312 } | |
| 313 | |
| 314 return NGX_OK; | |
| 315 } | |
| 316 | |
| 317 | |
| 318 static ngx_int_t | |
| 319 ngx_http_xslt_send(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 320 ngx_buf_t *b) | |
| 321 { | |
| 322 ngx_int_t rc; | |
| 323 ngx_chain_t out; | |
| 324 ngx_pool_cleanup_t *cln; | |
| 325 | |
| 326 ctx->done = 1; | |
| 327 | |
| 328 if (b == NULL) { | |
| 329 return ngx_http_xslt_filter_internal_error(r); | |
| 330 } | |
| 331 | |
| 332 cln = ngx_pool_cleanup_add(r->pool, 0); | |
| 333 | |
| 334 if (cln == NULL) { | |
| 335 ngx_free(b->pos); | |
| 336 return ngx_http_special_response_handler(r, | |
| 337 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 338 } | |
| 339 | |
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340 if (r == r->main) { |
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341 r->headers_out.content_length_n = b->last - b->pos; |
| 2139 | 342 |
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343 if (r->headers_out.content_length) { |
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344 r->headers_out.content_length->hash = 0; |
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345 r->headers_out.content_length = NULL; |
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346 } |
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347 |
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348 ngx_http_clear_last_modified(r); |
| 2139 | 349 } |
| 350 | |
| 351 rc = ngx_http_next_header_filter(r); | |
| 352 | |
| 353 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
| 354 ngx_free(b->pos); | |
| 355 return rc; | |
| 356 } | |
| 357 | |
| 358 cln->handler = ngx_http_xslt_cleanup; | |
| 359 cln->data = b->pos; | |
| 360 | |
| 361 out.buf = b; | |
| 362 out.next = NULL; | |
| 363 | |
| 364 return ngx_http_next_body_filter(r, &out); | |
| 365 } | |
| 366 | |
| 367 | |
| 368 static ngx_int_t | |
| 369 ngx_http_xslt_filter_internal_error(ngx_http_request_t *r) | |
| 370 { | |
| 371 ngx_int_t rc; | |
| 372 | |
| 373 /* clear the modules contexts */ | |
| 374 ngx_memzero(r->ctx, sizeof(void *) * ngx_http_max_module); | |
| 375 | |
| 376 rc = ngx_http_special_response_handler(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 377 | |
| 378 /* NGX_ERROR resets any pending data */ | |
| 379 | |
| 380 return (rc == NGX_OK) ? NGX_ERROR : rc; | |
| 381 } | |
| 382 | |
| 383 | |
| 384 static ngx_int_t | |
| 385 ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 386 ngx_buf_t *b) | |
| 387 { | |
| 388 int err; | |
| 389 xmlSAXHandler *sax; | |
| 390 xmlParserCtxtPtr ctxt; | |
| 391 | |
| 392 if (ctx->ctxt == NULL) { | |
| 393 | |
| 394 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL); | |
| 395 if (ctxt == NULL) { | |
| 396 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 397 "xmlCreatePushParserCtxt() failed"); | |
| 398 return NGX_ERROR; | |
| 399 } | |
| 400 | |
| 401 ctx->sax = ngx_palloc(r->pool, sizeof(xmlSAXHandler)); | |
| 402 if (ctx->sax == NULL) { | |
| 403 return NGX_ERROR; | |
| 404 } | |
| 405 | |
| 406 sax = ctxt->sax; | |
| 407 | |
| 408 ngx_memcpy(ctx->sax, sax, sizeof(xmlSAXHandler)); | |
| 409 | |
| 410 sax->startDocument = ngx_http_xslt_sax_start_document; | |
| 411 sax->endDocument = ngx_http_xslt_sax_end_document; | |
| 412 | |
| 413 sax->internalSubset = ngx_http_xslt_sax_internal_subset; | |
| 414 sax->externalSubset = ngx_http_xslt_sax_external_subset; | |
| 415 sax->entityDecl = ngx_http_xslt_sax_entity_decl; | |
| 416 sax->attributeDecl = ngx_http_xslt_sax_attribute_decl; | |
| 417 sax->elementDecl = ngx_http_xslt_sax_element_decl; | |
| 418 sax->notationDecl = ngx_http_xslt_sax_notation_decl; | |
| 419 sax->unparsedEntityDecl = ngx_http_xslt_sax_unparsed_entity_decl; | |
| 420 sax->setDocumentLocator = NULL; | |
| 421 | |
| 422 sax->startElementNs = ngx_http_xslt_sax_start_element; | |
| 423 sax->endElementNs = ngx_http_xslt_sax_end_element; | |
| 424 | |
| 425 sax->characters = ngx_http_xslt_sax_characters; | |
| 426 sax->ignorableWhitespace = ngx_http_xslt_sax_characters; | |
| 427 sax->cdataBlock = ngx_http_xslt_sax_cdata_block; | |
| 428 sax->getEntity = ngx_http_xslt_sax_get_entity; | |
| 429 sax->resolveEntity = ngx_http_xslt_sax_resolve_entity; | |
| 430 sax->getParameterEntity = ngx_http_xslt_sax_get_parameter_entity; | |
| 431 sax->reference = ngx_http_xslt_sax_reference; | |
| 432 sax->comment = ngx_http_xslt_sax_comment; | |
| 433 sax->processingInstruction = ngx_http_xslt_sax_processing_instruction; | |
| 434 | |
| 435 sax->isStandalone = ngx_http_xslt_sax_is_standalone; | |
| 436 sax->hasInternalSubset = ngx_http_xslt_sax_has_internal_subset; | |
| 437 sax->hasExternalSubset = ngx_http_xslt_sax_has_external_subset; | |
| 438 | |
| 439 sax->warning = NULL; | |
| 440 sax->error = ngx_http_xslt_sax_error; | |
| 441 sax->fatalError = ngx_http_xslt_sax_error; | |
| 442 | |
| 443 ctxt->userData = ctx; | |
| 444 | |
| 445 ctxt->replaceEntities = 1; | |
| 446 ctxt->loadsubset = 1; | |
| 447 | |
| 448 ctx->ctxt = ctxt; | |
| 449 ctx->request = r; | |
| 450 } | |
| 451 | |
| 452 err = xmlParseChunk(ctx->ctxt, (char *) b->pos, | |
| 453 (int) (b->last - b->pos), b->last_buf); | |
| 454 | |
| 455 if (err == 0) { | |
| 456 b->pos = b->last; | |
| 457 return NGX_OK; | |
| 458 } | |
| 459 | |
| 460 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 461 "xmlParseChunk() failed, error:%d", err); | |
| 462 | |
| 463 return NGX_ERROR; | |
| 464 } | |
| 465 | |
| 466 | |
| 467 static void | |
| 468 ngx_http_xslt_sax_start_document(void *data) | |
| 469 { | |
| 470 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 471 | |
| 472 ctx->sax->startDocument(ctx->ctxt); | |
| 473 } | |
| 474 | |
| 475 | |
| 476 static void | |
| 477 ngx_http_xslt_sax_end_document(void *data) | |
| 478 { | |
| 479 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 480 | |
| 481 ctx->sax->endDocument(ctx->ctxt); | |
| 482 } | |
| 483 | |
| 484 | |
| 485 static void | |
| 486 ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name, | |
| 487 const xmlChar *externalId, const xmlChar *systemId) | |
| 488 { | |
| 489 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 490 | |
| 491 ctx->sax->internalSubset(ctx->ctxt, name, externalId, systemId); | |
| 492 } | |
| 493 | |
| 494 | |
| 495 static void | |
| 496 ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
| 497 const xmlChar *externalId, const xmlChar *systemId) | |
| 498 { | |
| 499 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 500 | |
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501 xmlDocPtr doc; |
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502 xmlDtdPtr dtd; |
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503 ngx_http_request_t *r; |
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504 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 505 |
| 506 r = ctx->request; | |
| 507 | |
| 508 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 509 | |
| 510 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 511 "xslt filter extSubset: \"%s\" \"%s\" \"%s\"", | |
| 512 name ? name : (xmlChar *) "", | |
| 513 externalId ? externalId : (xmlChar *) "", | |
| 514 systemId ? systemId : (xmlChar *) ""); | |
| 515 | |
| 516 doc = ctx->ctxt->myDoc; | |
| 517 | |
| 518 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
| 519 | |
| 520 dtd = conf->dtd; | |
| 521 | |
| 522 #else | |
| 523 | |
| 524 dtd = xmlCopyDtd(conf->dtd); | |
| 525 if (dtd == NULL) { | |
| 526 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 527 "xmlCopyDtd() failed"); | |
| 528 return; | |
| 529 } | |
| 530 | |
| 531 if (doc->children == NULL) { | |
| 532 xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd); | |
| 533 | |
| 534 } else { | |
| 535 xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd); | |
| 536 } | |
| 537 | |
| 538 #endif | |
| 539 | |
| 540 doc->extSubset = dtd; | |
| 541 } | |
| 542 | |
| 543 | |
| 544 static void | |
| 545 ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name, int type, | |
| 546 const xmlChar *publicId, const xmlChar *systemId, xmlChar *content) | |
| 547 { | |
| 548 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 549 | |
| 550 ctx->sax->entityDecl(ctx->ctxt, name, type, publicId, systemId, content); | |
| 551 } | |
| 552 | |
| 553 | |
| 554 static void | |
| 555 ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem, | |
| 556 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue, | |
| 557 xmlEnumerationPtr tree) | |
| 558 { | |
| 559 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 560 | |
| 561 ctx->sax->attributeDecl(ctx->ctxt, elem, fullname, type, def, defaultValue, | |
| 562 tree); | |
| 563 } | |
| 564 | |
| 565 | |
| 566 static void | |
| 567 ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name, int type, | |
| 568 xmlElementContentPtr content) | |
| 569 { | |
| 570 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 571 | |
| 572 ctx->sax->elementDecl(ctx->ctxt, name, type, content); | |
| 573 } | |
| 574 | |
| 575 | |
| 576 static void | |
| 577 ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name, | |
| 578 const xmlChar *publicId, const xmlChar *systemId) | |
| 579 { | |
| 580 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 581 | |
| 582 ctx->sax->notationDecl(ctx->ctxt, name, publicId, systemId); | |
| 583 } | |
| 584 | |
| 585 | |
| 586 static void | |
| 587 ngx_http_xslt_sax_unparsed_entity_decl(void *data, const xmlChar *name, | |
| 588 const xmlChar *publicId, const xmlChar *systemId, | |
| 589 const xmlChar *notationName) | |
| 590 { | |
| 591 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 592 | |
| 593 ctx->sax->unparsedEntityDecl(ctx->ctxt, name, publicId, systemId, | |
| 594 notationName); | |
| 595 } | |
| 596 | |
| 597 | |
| 598 static void | |
| 599 ngx_http_xslt_sax_start_element(void *data, const xmlChar *localname, | |
| 600 const xmlChar *prefix, const xmlChar *URI, int nb_namespaces, | |
| 601 const xmlChar **namespaces, int nb_attributes, int nb_defaulted, | |
| 602 const xmlChar **attributes) | |
| 603 { | |
| 604 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 605 | |
| 606 ctx->sax->startElementNs(ctx->ctxt, localname, prefix, URI, nb_namespaces, | |
| 607 namespaces, nb_attributes, nb_defaulted, attributes); | |
| 608 } | |
| 609 | |
| 610 | |
| 611 static void | |
| 612 ngx_http_xslt_sax_end_element(void *data, | |
| 613 const xmlChar * localname ATTRIBUTE_UNUSED, | |
| 614 const xmlChar * prefix ATTRIBUTE_UNUSED, | |
| 615 const xmlChar * URI ATTRIBUTE_UNUSED) | |
| 616 { | |
| 617 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 618 | |
| 619 ctx->sax->endElementNs(ctx->ctxt, localname, prefix, URI); | |
| 620 } | |
| 621 | |
| 622 | |
| 623 static void | |
| 624 ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len) | |
| 625 { | |
| 626 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 627 | |
| 628 ctx->sax->characters(ctx->ctxt, p, len); | |
| 629 } | |
| 630 | |
| 631 | |
| 632 static void | |
| 633 ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p, int len) | |
| 634 { | |
| 635 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 636 | |
| 637 ctx->sax->cdataBlock(ctx->ctxt, p, len); | |
| 638 } | |
| 639 | |
| 640 | |
| 641 static xmlEntityPtr | |
| 642 ngx_http_xslt_sax_get_entity(void *data, const xmlChar *name) | |
| 643 { | |
| 644 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 645 | |
| 646 return ctx->sax->getEntity(ctx->ctxt, name); | |
| 647 } | |
| 648 | |
| 649 | |
| 650 static xmlEntityPtr | |
| 651 ngx_http_xslt_sax_get_parameter_entity(void *data, const xmlChar *name) | |
| 652 { | |
| 653 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 654 | |
| 655 return ctx->sax->getParameterEntity(ctx->ctxt, name); | |
| 656 } | |
| 657 | |
| 658 | |
| 659 static xmlParserInputPtr | |
| 660 ngx_http_xslt_sax_resolve_entity(void *data, const xmlChar *publicId, | |
| 661 const xmlChar *systemId) | |
| 662 { | |
| 663 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 664 | |
| 665 return ctx->sax->resolveEntity(ctx->ctxt, publicId, systemId); | |
| 666 } | |
| 667 | |
| 668 | |
| 669 static void | |
| 670 ngx_http_xslt_sax_reference(void *data, const xmlChar *name) | |
| 671 { | |
| 672 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 673 | |
| 674 ctx->sax->reference(ctx->ctxt, name); | |
| 675 } | |
| 676 | |
| 677 | |
| 678 static void | |
| 679 ngx_http_xslt_sax_comment(void *data, const xmlChar *value) | |
| 680 { | |
| 681 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 682 | |
| 683 ctx->sax->comment(ctx->ctxt, value); | |
| 684 } | |
| 685 | |
| 686 | |
| 687 static void | |
| 688 ngx_http_xslt_sax_processing_instruction(void *data, const xmlChar *target, | |
| 689 const xmlChar *pidata) | |
| 690 { | |
| 691 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 692 | |
| 693 ctx->sax->processingInstruction(ctx->ctxt, target, pidata); | |
| 694 } | |
| 695 | |
| 696 | |
| 697 static int | |
| 698 ngx_http_xslt_sax_is_standalone(void *data) | |
| 699 { | |
| 700 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 701 | |
| 702 return ctx->sax->isStandalone(ctx->ctxt); | |
| 703 } | |
| 704 | |
| 705 | |
| 706 static int | |
| 707 ngx_http_xslt_sax_has_internal_subset(void *data) | |
| 708 { | |
| 709 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 710 | |
| 711 return ctx->sax->hasInternalSubset(ctx->ctxt); | |
| 712 } | |
| 713 | |
| 714 | |
| 715 static int | |
| 716 ngx_http_xslt_sax_has_external_subset(void *data) | |
| 717 { | |
| 718 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 719 | |
| 720 return ctx->sax->hasExternalSubset(ctx->ctxt); | |
| 721 } | |
| 722 | |
| 723 | |
| 724 static void ngx_cdecl | |
| 725 ngx_http_xslt_sax_error(void *data, const char *msg, ...) | |
| 726 { | |
| 727 ngx_http_xslt_filter_ctx_t *ctx = data; | |
| 728 | |
| 729 size_t n; | |
| 730 va_list args; | |
| 731 u_char buf[NGX_MAX_ERROR_STR]; | |
| 732 | |
| 733 buf[0] = '\0'; | |
| 734 | |
| 735 va_start(args, msg); | |
| 736 n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args); | |
| 737 va_end(args); | |
| 738 | |
| 739 while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ } | |
| 740 | |
| 741 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
| 742 "libxml2 error: \"%*s\"", n, buf); | |
| 743 } | |
| 744 | |
| 745 | |
| 746 static ngx_buf_t * | |
| 747 ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
| 748 ngx_http_xslt_filter_ctx_t *ctx) | |
| 749 { | |
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750 int len, rc, doc_type; |
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751 u_char *type, *encoding; |
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752 ngx_buf_t *b; |
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753 ngx_uint_t i; |
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754 xmlChar *buf; |
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755 xmlDocPtr doc, res; |
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756 ngx_http_xslt_sheet_t *sheet; |
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757 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 758 |
| 759 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
| 760 sheet = conf->sheets.elts; | |
| 761 doc = ctx->doc; | |
| 762 | |
| 763 /* preallocate array for 4 params */ | |
| 764 | |
| 765 if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *)) | |
| 766 != NGX_OK) | |
| 767 { | |
| 768 xmlFreeDoc(doc); | |
| 769 return NULL; | |
| 770 } | |
| 771 | |
| 772 for (i = 0; i < conf->sheets.nelts; i++) { | |
| 773 | |
| 774 if (ngx_http_xslt_params(r, ctx, &sheet[i].params) != NGX_OK) { | |
| 775 xmlFreeDoc(doc); | |
| 776 return NULL; | |
| 777 } | |
| 778 | |
| 779 res = xsltApplyStylesheet(sheet[i].stylesheet, doc, ctx->params.elts); | |
| 780 | |
| 781 xmlFreeDoc(doc); | |
| 782 | |
| 783 if (res == NULL) { | |
| 784 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 785 "xsltApplyStylesheet() failed"); | |
| 786 return NULL; | |
| 787 } | |
| 788 | |
| 789 doc = res; | |
| 790 | |
| 791 /* reset array elements */ | |
| 792 ctx->params.nelts = 0; | |
| 793 } | |
| 794 | |
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795 /* there must be at least one stylesheet */ |
| 2139 | 796 |
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797 if (r == r->main) { |
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798 type = ngx_http_xslt_content_type(sheet[i - 1].stylesheet); |
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799 |
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800 } else { |
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801 type = NULL; |
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802 } |
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803 |
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804 encoding = ngx_http_xslt_encoding(sheet[i - 1].stylesheet); |
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805 doc_type = doc->type; |
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806 |
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807 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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808 "xslt filter type: %d t:%s e:%s", |
|
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809 doc_type, type ? type : (u_char *) "(null)", |
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810 encoding ? encoding : (u_char *) "(null)"); |
| 2139 | 811 |
| 812 rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet); | |
| 813 | |
| 814 xmlFreeDoc(doc); | |
| 815 | |
| 816 if (rc != 0) { | |
| 817 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 818 "xsltSaveResultToString() failed"); | |
| 819 return NULL; | |
| 820 } | |
| 821 | |
| 822 if (len == 0) { | |
| 823 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 824 "xsltSaveResultToString() returned zero-length result"); | |
| 825 return NULL; | |
| 826 } | |
| 827 | |
| 828 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
| 829 if (b == NULL) { | |
| 830 ngx_free(buf); | |
| 831 return NULL; | |
| 832 } | |
| 833 | |
| 834 b->pos = buf; | |
| 835 b->last = buf + len; | |
| 836 b->memory = 1; | |
| 837 b->last_buf = 1; | |
| 838 | |
|
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839 if (encoding) { |
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840 r->headers_out.charset.len = ngx_strlen(encoding); |
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841 r->headers_out.charset.data = encoding; |
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842 } |
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843 |
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844 if (r != r->main) { |
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845 return b; |
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846 } |
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847 |
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848 if (type) { |
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849 len = ngx_strlen(type); |
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850 |
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851 r->headers_out.content_type_len = len; |
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852 r->headers_out.content_type.len = len; |
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853 r->headers_out.content_type.data = type; |
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854 |
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855 } else if (doc_type == XML_HTML_DOCUMENT_NODE) { |
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856 |
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857 r->headers_out.content_type_len = sizeof("text/html") - 1; |
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858 r->headers_out.content_type.len = sizeof("text/html") - 1; |
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859 r->headers_out.content_type.data = (u_char *) "text/html"; |
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860 } |
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861 |
| 2139 | 862 return b; |
| 863 } | |
| 864 | |
| 865 | |
| 866 static ngx_int_t | |
| 867 ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
| 868 ngx_array_t *params) | |
| 869 { | |
| 870 u_char *p, *last, *value, *dst, *src, **s; | |
| 871 size_t len; | |
| 872 ngx_uint_t i; | |
| 873 ngx_str_t string; | |
| 874 ngx_http_xslt_param_t *param; | |
| 875 | |
| 876 param = params->elts; | |
| 877 | |
| 878 for (i = 0; i < params->nelts; i++) { | |
| 879 | |
| 880 if (ngx_http_script_run(r, &string, param[i].lengths->elts, 1, | |
| 881 param[i].values->elts) | |
| 882 == NULL) | |
| 883 { | |
| 884 return NGX_ERROR; | |
| 885 } | |
| 886 | |
| 887 last = string.data + string.len - 1; | |
| 888 *last = '\0'; | |
| 889 | |
| 890 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 891 "xslt filter param: \"%s\"", string.data); | |
| 892 | |
| 893 p = string.data; | |
| 894 | |
| 895 while (p && *p) { | |
| 896 | |
| 897 value = p; | |
| 898 p = (u_char *) ngx_strchr(p, '='); | |
| 899 if (p == NULL) { | |
| 900 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 901 "invalid libxslt parameter \"%s\"", value); | |
| 902 return NGX_ERROR; | |
| 903 } | |
| 904 *p++ = '\0'; | |
| 905 | |
| 906 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 907 "xslt filter param name: \"%s\"", value); | |
| 908 | |
| 909 s = ngx_array_push(&ctx->params); | |
| 910 if (s == NULL) { | |
| 911 return NGX_ERROR; | |
| 912 } | |
| 913 | |
| 914 *s = value; | |
| 915 | |
| 916 value = p; | |
| 917 p = (u_char *) ngx_strchr(p, ':'); | |
| 918 | |
| 919 if (p) { | |
| 920 len = p - value; | |
| 921 *p++ = '\0'; | |
| 922 | |
| 923 } else { | |
| 924 len = last - value; | |
| 925 } | |
| 926 | |
| 927 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 928 "xslt filter param value: \"%s\"", value); | |
| 929 | |
| 930 dst = value; | |
| 931 src = value; | |
| 932 | |
| 933 ngx_unescape_uri(&dst, &src, len, 0); | |
| 934 | |
| 935 *dst = '\0'; | |
| 936 | |
| 937 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 938 "xslt filter param unescaped: \"%s\"", value); | |
| 939 | |
| 940 s = ngx_array_push(&ctx->params); | |
| 941 if (s == NULL) { | |
| 942 return NGX_ERROR; | |
| 943 } | |
| 944 | |
| 945 *s = value; | |
| 946 } | |
| 947 } | |
| 948 | |
| 949 s = ngx_array_push(&ctx->params); | |
| 950 if (s == NULL) { | |
| 951 return NGX_ERROR; | |
| 952 } | |
| 953 | |
| 954 *s = NULL; | |
| 955 | |
| 956 return NGX_OK; | |
| 957 } | |
| 958 | |
| 959 | |
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960 static u_char * |
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961 ngx_http_xslt_content_type(xsltStylesheetPtr s) |
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962 { |
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963 u_char *type; |
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964 |
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965 if (s->mediaType) { |
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966 return s->mediaType; |
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967 } |
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968 |
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969 for (s = s->imports; s; s = s->next) { |
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970 |
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971 type = ngx_http_xslt_content_type(s); |
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972 |
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973 if (type) { |
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974 return type; |
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975 } |
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976 } |
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977 |
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978 return NULL; |
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979 } |
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980 |
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981 |
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982 static u_char * |
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983 ngx_http_xslt_encoding(xsltStylesheetPtr s) |
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984 { |
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985 u_char *encoding; |
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986 |
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987 if (s->encoding) { |
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988 return s->encoding; |
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989 } |
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990 |
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991 for (s = s->imports; s; s = s->next) { |
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992 |
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993 encoding = ngx_http_xslt_encoding(s); |
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994 |
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995 if (encoding) { |
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996 return encoding; |
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997 } |
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998 } |
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999 |
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1000 return NULL; |
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1001 } |
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1002 |
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1003 |
| 2139 | 1004 static void |
| 1005 ngx_http_xslt_cleanup(void *data) | |
| 1006 { | |
| 1007 ngx_free(data); | |
| 1008 } | |
| 1009 | |
| 1010 | |
| 1011 static char * | |
| 1012 ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 1013 { | |
|
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1014 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
| 2139 | 1015 |
|
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1016 ngx_str_t *value; |
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1017 ngx_uint_t i; |
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1018 ngx_pool_cleanup_t *cln; |
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1019 ngx_http_xslt_file_t *file; |
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1020 ngx_http_xslt_filter_main_conf_t *xmcf; |
| 2139 | 1021 |
| 1022 if (xlcf->dtd) { | |
| 1023 return "is duplicate"; | |
| 1024 } | |
| 1025 | |
| 1026 value = cf->args->elts; | |
| 1027 | |
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1028 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); |
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1029 |
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1030 file = xmcf->dtd_files.elts; |
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1031 for (i = 0; i < xmcf->dtd_files.nelts; i++) { |
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1032 if (ngx_strcmp(file[i].name, &value[1].data) == 0) { |
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1033 xlcf->dtd = file[i].data; |
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1034 return NGX_CONF_OK; |
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1035 } |
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1036 } |
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1037 |
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|
1038 cln = ngx_pool_cleanup_add(cf->pool, 0); |
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1039 if (cln == NULL) { |
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1040 return NGX_CONF_ERROR; |
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1041 } |
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1042 |
| 2139 | 1043 xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data); |
| 1044 | |
| 1045 if (xlcf->dtd == NULL) { | |
| 1046 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed"); | |
| 1047 return NGX_CONF_ERROR; | |
| 1048 } | |
| 1049 | |
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1050 cln->handler = ngx_http_xslt_cleanup_dtd; |
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1051 cln->data = xlcf->dtd; |
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1052 |
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1053 file = ngx_array_push(&xmcf->dtd_files); |
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1054 if (file == NULL) { |
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1055 return NGX_CONF_ERROR; |
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1056 } |
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1057 |
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1058 file->name = value[1].data; |
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1059 file->data = xlcf->dtd; |
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1060 |
| 2139 | 1061 return NGX_CONF_OK; |
| 1062 } | |
| 1063 | |
| 1064 | |
| 1065 | |
| 1066 static char * | |
| 1067 ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 1068 { | |
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1069 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
| 2139 | 1070 |
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1071 ngx_str_t *value; |
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1072 ngx_uint_t i, n; |
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1073 ngx_pool_cleanup_t *cln; |
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1074 ngx_http_xslt_file_t *file; |
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1075 ngx_http_xslt_sheet_t *sheet; |
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1076 ngx_http_xslt_param_t *param; |
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1077 ngx_http_script_compile_t sc; |
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1078 ngx_http_xslt_filter_main_conf_t *xmcf; |
| 2139 | 1079 |
| 1080 value = cf->args->elts; | |
| 1081 | |
| 1082 if (xlcf->sheets.elts == NULL) { | |
| 1083 if (ngx_array_init(&xlcf->sheets, cf->pool, 1, | |
| 1084 sizeof(ngx_http_xslt_sheet_t)) | |
| 1085 != NGX_OK) | |
| 1086 { | |
| 1087 return NGX_CONF_ERROR; | |
| 1088 } | |
| 1089 } | |
| 1090 | |
| 1091 sheet = ngx_array_push(&xlcf->sheets); | |
| 1092 if (sheet == NULL) { | |
| 1093 return NGX_CONF_ERROR; | |
| 1094 } | |
| 1095 | |
| 1096 ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t)); | |
| 1097 | |
| 1098 if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) { | |
| 1099 return NGX_CONF_ERROR; | |
| 1100 } | |
| 1101 | |
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1102 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); |
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1103 |
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1104 file = xmcf->sheet_files.elts; |
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1105 for (i = 0; i < xmcf->sheet_files.nelts; i++) { |
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1106 if (ngx_strcmp(file[i].name, &value[1].data) == 0) { |
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1107 sheet->stylesheet = file[i].data; |
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1108 goto found; |
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1109 } |
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1110 } |
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1111 |
| 2139 | 1112 cln = ngx_pool_cleanup_add(cf->pool, 0); |
| 1113 if (cln == NULL) { | |
| 1114 return NGX_CONF_ERROR; | |
| 1115 } | |
| 1116 | |
| 1117 sheet->stylesheet = xsltParseStylesheetFile(value[1].data); | |
| 1118 if (sheet->stylesheet == NULL) { | |
| 1119 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, | |
| 1120 "xsltParseStylesheetFile(\"%s\") failed", | |
| 1121 value[1].data); | |
| 1122 return NGX_CONF_ERROR; | |
| 1123 } | |
| 1124 | |
| 1125 cln->handler = ngx_http_xslt_cleanup_stylesheet; | |
| 1126 cln->data = sheet->stylesheet; | |
| 1127 | |
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1128 file = ngx_array_push(&xmcf->sheet_files); |
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1129 if (file == NULL) { |
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1130 return NGX_CONF_ERROR; |
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1131 } |
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1132 |
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1133 file->name = value[1].data; |
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1134 file->data = sheet->stylesheet; |
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1135 |
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1136 found: |
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1137 |
| 2139 | 1138 n = cf->args->nelts; |
| 1139 | |
| 1140 if (n == 2) { | |
| 1141 return NGX_CONF_OK; | |
| 1142 } | |
| 1143 | |
| 1144 if (ngx_array_init(&sheet->params, cf->pool, n - 2, | |
| 1145 sizeof(ngx_http_xslt_param_t)) | |
| 1146 != NGX_OK) | |
| 1147 { | |
| 1148 return NGX_CONF_ERROR; | |
| 1149 } | |
| 1150 | |
| 1151 for (i = 2; i < n; i++) { | |
| 1152 | |
| 1153 param = ngx_array_push(&sheet->params); | |
| 1154 if (param == NULL) { | |
| 1155 return NGX_CONF_ERROR; | |
| 1156 } | |
| 1157 | |
| 1158 param->lengths = NULL; | |
| 1159 param->values = NULL; | |
| 1160 | |
| 1161 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 1162 | |
| 1163 sc.cf = cf; | |
| 1164 sc.source = &value[i]; | |
| 1165 sc.lengths = ¶m->lengths; | |
| 1166 sc.values = ¶m->values; | |
| 1167 sc.variables = ngx_http_script_variables_count(&value[i]); | |
| 1168 sc.complete_lengths = 1; | |
| 1169 sc.complete_values = 1; | |
| 1170 | |
| 1171 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 1172 return NGX_CONF_ERROR; | |
| 1173 } | |
| 1174 } | |
| 1175 | |
| 1176 return NGX_CONF_OK; | |
| 1177 } | |
| 1178 | |
| 1179 | |
| 1180 static void | |
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1181 ngx_http_xslt_cleanup_dtd(void *data) |
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1182 { |
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1183 xmlFreeDtd(data); |
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1184 } |
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1185 |
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1186 |
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1187 static void |
| 2139 | 1188 ngx_http_xslt_cleanup_stylesheet(void *data) |
| 1189 { | |
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1190 xsltFreeStylesheet(data); |
| 2139 | 1191 } |
| 1192 | |
| 1193 | |
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1194 static void * |
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1195 ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf) |
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1196 { |
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1197 ngx_http_xslt_filter_main_conf_t *conf; |
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1198 |
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1199 conf = ngx_palloc(cf->pool, sizeof(ngx_http_xslt_filter_main_conf_t)); |
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1200 if (conf == NULL) { |
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1201 return NGX_CONF_ERROR; |
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1202 } |
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1203 |
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1204 if (ngx_array_init(&conf->dtd_files, cf->pool, 1, |
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1205 sizeof(ngx_http_xslt_file_t)) |
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1206 != NGX_OK) |
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1207 { |
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1208 return NULL; |
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1209 } |
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1210 |
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1211 if (ngx_array_init(&conf->sheet_files, cf->pool, 1, |
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1212 sizeof(ngx_http_xslt_file_t)) |
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1213 != NGX_OK) |
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1214 { |
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1215 return NULL; |
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1216 } |
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1217 |
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1218 return conf; |
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1219 } |
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1220 |
| 2139 | 1221 |
| 1222 static void * | |
| 1223 ngx_http_xslt_filter_create_conf(ngx_conf_t *cf) | |
| 1224 { | |
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1225 ngx_http_xslt_filter_loc_conf_t *conf; |
| 2139 | 1226 |
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1227 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_loc_conf_t)); |
| 2139 | 1228 if (conf == NULL) { |
| 1229 return NGX_CONF_ERROR; | |
| 1230 } | |
| 1231 | |
| 1232 /* | |
| 1233 * set by ngx_pcalloc(): | |
| 1234 * | |
| 2148 | 1235 * conf->dtd = NULL; |
| 1236 * conf->sheets = { NULL }; | |
| 1237 * conf->types = { NULL }; | |
| 1238 * conf->types_keys = NULL; | |
| 2139 | 1239 */ |
| 1240 | |
| 1241 return conf; | |
| 1242 } | |
| 1243 | |
| 1244 | |
| 1245 static char * | |
| 1246 ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 1247 { | |
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1248 ngx_http_xslt_filter_loc_conf_t *prev = parent; |
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1249 ngx_http_xslt_filter_loc_conf_t *conf = child; |
| 2139 | 1250 |
| 1251 if (conf->dtd == NULL) { | |
| 1252 conf->dtd = prev->dtd; | |
| 1253 } | |
| 1254 | |
| 1255 if (conf->sheets.nelts == 0) { | |
| 1256 conf->sheets = prev->sheets; | |
| 1257 } | |
| 1258 | |
| 2148 | 1259 if (ngx_http_merge_types(cf, conf->types_keys, &conf->types, |
| 1260 prev->types_keys, &prev->types, | |
| 1261 ngx_http_xslt_default_types) | |
| 2139 | 1262 != NGX_OK) |
| 1263 { | |
| 1264 return NGX_CONF_ERROR; | |
| 1265 } | |
| 1266 | |
| 1267 return NGX_CONF_OK; | |
| 1268 } | |
| 1269 | |
| 1270 | |
| 1271 static ngx_int_t | |
| 1272 ngx_http_xslt_filter_init(ngx_conf_t *cf) | |
| 1273 { | |
| 1274 xmlInitParser(); | |
| 1275 | |
| 2299 | 1276 #if (NGX_HAVE_EXSLT) |
| 1277 exsltRegisterAll(); | |
| 1278 #endif | |
| 1279 | |
| 2139 | 1280 ngx_http_next_header_filter = ngx_http_top_header_filter; |
| 1281 ngx_http_top_header_filter = ngx_http_xslt_header_filter; | |
| 1282 | |
| 1283 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
| 1284 ngx_http_top_body_filter = ngx_http_xslt_body_filter; | |
| 1285 | |
| 1286 return NGX_OK; | |
| 1287 } | |
| 1288 | |
| 1289 | |
| 1290 static void | |
| 1291 ngx_http_xslt_filter_exit(ngx_cycle_t *cycle) | |
| 1292 { | |
| 1293 xsltCleanupGlobals(); | |
| 1294 xmlCleanupParser(); | |
| 1295 } |