Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 1 | /** |
| 2 | * catalog.c: set of generic Catalog related routines |
| 3 | * |
| 4 | * Reference: SGML Open Technical Resolution TR9401:1997. |
| 5 | * http://www.jclark.com/sp/catalog.htm |
| 6 | * |
| 7 | * See Copyright for the status of this software. |
| 8 | * |
| 9 | * Daniel.Veillard@imag.fr |
| 10 | */ |
| 11 | |
| 12 | #include "libxml.h" |
| 13 | |
| 14 | #ifdef LIBXML_CATALOG_ENABLED |
| 15 | #ifdef HAVE_SYS_TYPES_H |
| 16 | #include <sys/types.h> |
| 17 | #endif |
| 18 | #ifdef HAVE_SYS_STAT_H |
| 19 | #include <sys/stat.h> |
| 20 | #endif |
| 21 | #ifdef HAVE_UNISTD_H |
| 22 | #include <unistd.h> |
| 23 | #endif |
| 24 | #ifdef HAVE_FCNTL_H |
| 25 | #include <fcntl.h> |
| 26 | #endif |
| 27 | #include <string.h> |
| 28 | #include <libxml/xmlmemory.h> |
| 29 | #include <libxml/hash.h> |
| 30 | #include <libxml/uri.h> |
| 31 | #include <libxml/parserInternals.h> |
| 32 | #include <libxml/catalog.h> |
| 33 | #include <libxml/xmlerror.h> |
| 34 | |
| 35 | /************************************************************************ |
| 36 | * * |
| 37 | * Types, all private * |
| 38 | * * |
| 39 | ************************************************************************/ |
| 40 | |
| 41 | typedef enum { |
| 42 | XML_CATA_NONE = 0, |
| 43 | XML_CATA_SYSTEM, |
| 44 | XML_CATA_PUBLIC, |
| 45 | XML_CATA_ENTITY, |
| 46 | XML_CATA_PENTITY, |
| 47 | XML_CATA_DOCTYPE, |
| 48 | XML_CATA_LINKTYPE, |
| 49 | XML_CATA_NOTATION, |
| 50 | XML_CATA_DELEGATE, |
| 51 | XML_CATA_BASE, |
| 52 | XML_CATA_CATALOG, |
| 53 | XML_CATA_DOCUMENT, |
| 54 | XML_CATA_SGMLDECL |
| 55 | } xmlCatalogEntryType; |
| 56 | |
| 57 | typedef struct _xmlCatalogEntry xmlCatalogEntry; |
| 58 | typedef xmlCatalogEntry *xmlCatalogEntryPtr; |
| 59 | struct _xmlCatalogEntry { |
| 60 | xmlCatalogEntryType type; |
| 61 | xmlChar *name; |
| 62 | xmlChar *value; |
| 63 | }; |
| 64 | |
| 65 | static xmlHashTablePtr xmlDefaultCatalog; |
| 66 | |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 67 | /* Catalog stack */ |
Daniel Veillard | 81418e3 | 2001-05-22 15:08:55 +0000 | [diff] [blame] | 68 | static const char * catalTab[10]; /* stack of catals */ |
| 69 | static int catalNr = 0; /* Number of current catal streams */ |
| 70 | static int catalMax = 10; /* Max number of catal streams */ |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 71 | |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 72 | /************************************************************************ |
| 73 | * * |
| 74 | * alloc or dealloc * |
| 75 | * * |
| 76 | ************************************************************************/ |
| 77 | |
| 78 | static xmlCatalogEntryPtr |
| 79 | xmlNewCatalogEntry(int type, xmlChar *name, xmlChar *value) { |
| 80 | xmlCatalogEntryPtr ret; |
| 81 | |
| 82 | ret = (xmlCatalogEntryPtr) xmlMalloc(sizeof(xmlCatalogEntry)); |
| 83 | if (ret == NULL) { |
| 84 | xmlGenericError(xmlGenericErrorContext, |
| 85 | "malloc of %d byte failed\n", sizeof(xmlCatalogEntry)); |
| 86 | return(NULL); |
| 87 | } |
| 88 | ret->type = type; |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 89 | ret->name = xmlStrdup(name); |
| 90 | ret->value = xmlStrdup(value); |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 91 | return(ret); |
| 92 | } |
| 93 | |
| 94 | static void |
| 95 | xmlFreeCatalogEntry(xmlCatalogEntryPtr ret) { |
| 96 | if (ret == NULL) |
| 97 | return; |
| 98 | if (ret->name != NULL) |
| 99 | xmlFree(ret->name); |
| 100 | if (ret->value != NULL) |
| 101 | xmlFree(ret->value); |
| 102 | xmlFree(ret); |
| 103 | } |
| 104 | |
Daniel Veillard | 7d6fd21 | 2001-05-10 15:34:11 +0000 | [diff] [blame] | 105 | /** |
| 106 | * xmlCatalogDumpEntry: |
| 107 | * @entry: the |
| 108 | * @out: the file. |
| 109 | * |
| 110 | * Free up all the memory associated with catalogs |
| 111 | */ |
| 112 | static void |
| 113 | xmlCatalogDumpEntry(xmlCatalogEntryPtr entry, FILE *out) { |
| 114 | if ((entry == NULL) || (out == NULL)) |
| 115 | return; |
| 116 | switch (entry->type) { |
| 117 | case XML_CATA_ENTITY: |
| 118 | fprintf(out, "ENTITY "); break; |
| 119 | case XML_CATA_PENTITY: |
| 120 | fprintf(out, "ENTITY %%"); break; |
| 121 | case XML_CATA_DOCTYPE: |
| 122 | fprintf(out, "DOCTYPE "); break; |
| 123 | case XML_CATA_LINKTYPE: |
| 124 | fprintf(out, "LINKTYPE "); break; |
| 125 | case XML_CATA_NOTATION: |
| 126 | fprintf(out, "NOTATION "); break; |
| 127 | case XML_CATA_PUBLIC: |
| 128 | fprintf(out, "PUBLIC "); break; |
| 129 | case XML_CATA_SYSTEM: |
| 130 | fprintf(out, "SYSTEM "); break; |
| 131 | case XML_CATA_DELEGATE: |
| 132 | fprintf(out, "DELEGATE "); break; |
| 133 | case XML_CATA_BASE: |
| 134 | fprintf(out, "BASE "); break; |
| 135 | case XML_CATA_CATALOG: |
| 136 | fprintf(out, "CATALOG "); break; |
| 137 | case XML_CATA_DOCUMENT: |
| 138 | fprintf(out, "DOCUMENT "); break; |
| 139 | case XML_CATA_SGMLDECL: |
| 140 | fprintf(out, "SGMLDECL "); break; |
| 141 | default: |
| 142 | return; |
| 143 | } |
| 144 | switch (entry->type) { |
| 145 | case XML_CATA_ENTITY: |
| 146 | case XML_CATA_PENTITY: |
| 147 | case XML_CATA_DOCTYPE: |
| 148 | case XML_CATA_LINKTYPE: |
| 149 | case XML_CATA_NOTATION: |
| 150 | fprintf(out, "%s", entry->name); break; |
| 151 | case XML_CATA_PUBLIC: |
| 152 | case XML_CATA_SYSTEM: |
| 153 | case XML_CATA_SGMLDECL: |
| 154 | case XML_CATA_DOCUMENT: |
| 155 | case XML_CATA_CATALOG: |
| 156 | case XML_CATA_BASE: |
| 157 | case XML_CATA_DELEGATE: |
| 158 | fprintf(out, "\"%s\"", entry->name); break; |
| 159 | default: |
| 160 | break; |
| 161 | } |
| 162 | switch (entry->type) { |
| 163 | case XML_CATA_ENTITY: |
| 164 | case XML_CATA_PENTITY: |
| 165 | case XML_CATA_DOCTYPE: |
| 166 | case XML_CATA_LINKTYPE: |
| 167 | case XML_CATA_NOTATION: |
| 168 | case XML_CATA_PUBLIC: |
| 169 | case XML_CATA_SYSTEM: |
| 170 | case XML_CATA_DELEGATE: |
| 171 | fprintf(out, " \"%s\"", entry->value); break; |
| 172 | default: |
| 173 | break; |
| 174 | } |
| 175 | fprintf(out, "\n"); |
| 176 | } |
| 177 | |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 178 | /************************************************************************ |
| 179 | * * |
| 180 | * The parser * |
| 181 | * * |
| 182 | ************************************************************************/ |
| 183 | |
| 184 | |
| 185 | #define RAW *cur |
| 186 | #define NEXT cur++; |
| 187 | #define SKIP(x) cur += x; |
| 188 | |
| 189 | #define SKIP_BLANKS while (IS_BLANK(*cur)) NEXT; |
| 190 | |
| 191 | static const xmlChar * |
| 192 | xmlParseCatalogComment(const xmlChar *cur) { |
| 193 | if ((cur[0] != '-') || (cur[1] != '-')) |
| 194 | return(cur); |
| 195 | SKIP(2); |
| 196 | while ((cur[0] != 0) && ((cur[0] != '-') || ((cur[1] != '-')))) |
| 197 | NEXT; |
| 198 | if (cur[0] == 0) { |
| 199 | return(NULL); |
| 200 | } |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 201 | return(cur + 2); |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | static const xmlChar * |
| 205 | xmlParseCatalogPubid(const xmlChar *cur, xmlChar **id) { |
| 206 | xmlChar *buf = NULL; |
| 207 | int len = 0; |
| 208 | int size = 50; |
| 209 | xmlChar stop; |
| 210 | int count = 0; |
| 211 | |
| 212 | *id = NULL; |
| 213 | |
| 214 | if (RAW == '"') { |
| 215 | NEXT; |
| 216 | stop = '"'; |
| 217 | } else if (RAW == '\'') { |
| 218 | NEXT; |
| 219 | stop = '\''; |
| 220 | } else { |
| 221 | stop = ' '; |
| 222 | } |
| 223 | buf = (xmlChar *) xmlMalloc(size * sizeof(xmlChar)); |
| 224 | if (buf == NULL) { |
| 225 | xmlGenericError(xmlGenericErrorContext, |
| 226 | "malloc of %d byte failed\n", size); |
| 227 | return(NULL); |
| 228 | } |
| 229 | while (xmlIsPubidChar(*cur)) { |
| 230 | if ((*cur == stop) && (stop != ' ')) |
| 231 | break; |
| 232 | if ((stop == ' ') && (IS_BLANK(*cur))) |
| 233 | break; |
| 234 | if (len + 1 >= size) { |
| 235 | size *= 2; |
| 236 | buf = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar)); |
| 237 | if (buf == NULL) { |
| 238 | xmlGenericError(xmlGenericErrorContext, |
| 239 | "realloc of %d byte failed\n", size); |
| 240 | return(NULL); |
| 241 | } |
| 242 | } |
| 243 | buf[len++] = *cur; |
| 244 | count++; |
| 245 | NEXT; |
| 246 | } |
| 247 | buf[len] = 0; |
| 248 | if (stop == ' ') { |
| 249 | if (!IS_BLANK(*cur)) { |
| 250 | xmlFree(buf); |
| 251 | return(NULL); |
| 252 | } |
| 253 | } else { |
| 254 | if (*cur != stop) { |
| 255 | xmlFree(buf); |
| 256 | return(NULL); |
| 257 | } |
| 258 | NEXT; |
| 259 | } |
| 260 | *id = buf; |
| 261 | return(cur); |
| 262 | } |
| 263 | |
| 264 | static const xmlChar * |
| 265 | xmlParseCatalogName(const xmlChar *cur, xmlChar **name) { |
| 266 | xmlChar buf[XML_MAX_NAMELEN + 5]; |
| 267 | int len = 0; |
| 268 | int c; |
| 269 | |
| 270 | *name = NULL; |
| 271 | |
| 272 | /* |
| 273 | * Handler for more complex cases |
| 274 | */ |
| 275 | c = *cur; |
| 276 | if ((!IS_LETTER(c) && (c != '_') && (c != ':'))) { |
| 277 | return(NULL); |
| 278 | } |
| 279 | |
| 280 | while (((IS_LETTER(c)) || (IS_DIGIT(c)) || |
| 281 | (c == '.') || (c == '-') || |
| 282 | (c == '_') || (c == ':'))) { |
| 283 | buf[len++] = c; |
| 284 | cur++; |
| 285 | c = *cur; |
| 286 | if (len >= XML_MAX_NAMELEN) |
| 287 | return(NULL); |
| 288 | } |
| 289 | *name = xmlStrndup(buf, len); |
| 290 | return(cur); |
| 291 | } |
| 292 | |
| 293 | static int |
| 294 | xmlParseCatalog(const xmlChar *value, const char *file) { |
| 295 | const xmlChar *cur = value; |
| 296 | xmlChar *base = NULL; |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 297 | int res; |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 298 | |
| 299 | if ((cur == NULL) || (file == NULL)) |
| 300 | return(-1); |
| 301 | base = xmlStrdup((const xmlChar *) file); |
| 302 | |
| 303 | while ((cur != NULL) && (cur[0] != '0')) { |
| 304 | SKIP_BLANKS; |
| 305 | if ((cur[0] == '-') && (cur[1] == '-')) { |
| 306 | cur = xmlParseCatalogComment(cur); |
| 307 | if (cur == NULL) { |
| 308 | /* error */ |
| 309 | break; |
| 310 | } |
| 311 | } else { |
| 312 | xmlChar *sysid = NULL; |
| 313 | xmlChar *name = NULL; |
| 314 | xmlCatalogEntryType type = XML_CATA_NONE; |
| 315 | |
| 316 | cur = xmlParseCatalogName(cur, &name); |
| 317 | if (name == NULL) { |
| 318 | /* error */ |
| 319 | break; |
| 320 | } |
| 321 | if (!IS_BLANK(*cur)) { |
| 322 | /* error */ |
| 323 | break; |
| 324 | } |
| 325 | SKIP_BLANKS; |
| 326 | if (xmlStrEqual(name, (const xmlChar *) "SYSTEM")) |
| 327 | type = XML_CATA_SYSTEM; |
| 328 | else if (xmlStrEqual(name, (const xmlChar *) "PUBLIC")) |
| 329 | type = XML_CATA_PUBLIC; |
| 330 | else if (xmlStrEqual(name, (const xmlChar *) "DELEGATE")) |
| 331 | type = XML_CATA_DELEGATE; |
| 332 | else if (xmlStrEqual(name, (const xmlChar *) "ENTITY")) |
| 333 | type = XML_CATA_ENTITY; |
| 334 | else if (xmlStrEqual(name, (const xmlChar *) "DOCTYPE")) |
| 335 | type = XML_CATA_DOCTYPE; |
| 336 | else if (xmlStrEqual(name, (const xmlChar *) "LINKTYPE")) |
| 337 | type = XML_CATA_LINKTYPE; |
| 338 | else if (xmlStrEqual(name, (const xmlChar *) "NOTATION")) |
| 339 | type = XML_CATA_NOTATION; |
| 340 | else if (xmlStrEqual(name, (const xmlChar *) "SGMLDECL")) |
| 341 | type = XML_CATA_SGMLDECL; |
| 342 | else if (xmlStrEqual(name, (const xmlChar *) "DOCUMENT")) |
| 343 | type = XML_CATA_DOCUMENT; |
| 344 | else if (xmlStrEqual(name, (const xmlChar *) "CATALOG")) |
| 345 | type = XML_CATA_CATALOG; |
| 346 | else if (xmlStrEqual(name, (const xmlChar *) "BASE")) |
| 347 | type = XML_CATA_BASE; |
| 348 | else if (xmlStrEqual(name, (const xmlChar *) "DELEGATE")) |
| 349 | type = XML_CATA_DELEGATE; |
| 350 | else if (xmlStrEqual(name, (const xmlChar *) "OVERRIDE")) { |
| 351 | xmlFree(name); |
| 352 | cur = xmlParseCatalogName(cur, &name); |
| 353 | if (name == NULL) { |
| 354 | /* error */ |
| 355 | break; |
| 356 | } |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 357 | xmlFree(name); |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 358 | continue; |
| 359 | } |
| 360 | xmlFree(name); |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 361 | name = NULL; |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 362 | |
| 363 | switch(type) { |
| 364 | case XML_CATA_ENTITY: |
| 365 | if (*cur == '%') |
| 366 | type = XML_CATA_PENTITY; |
| 367 | case XML_CATA_PENTITY: |
| 368 | case XML_CATA_DOCTYPE: |
| 369 | case XML_CATA_LINKTYPE: |
| 370 | case XML_CATA_NOTATION: |
| 371 | cur = xmlParseCatalogName(cur, &name); |
| 372 | if (cur == NULL) { |
| 373 | /* error */ |
| 374 | break; |
| 375 | } |
| 376 | if (!IS_BLANK(*cur)) { |
| 377 | /* error */ |
| 378 | break; |
| 379 | } |
| 380 | SKIP_BLANKS; |
| 381 | cur = xmlParseCatalogPubid(cur, &sysid); |
| 382 | if (cur == NULL) { |
| 383 | /* error */ |
| 384 | break; |
| 385 | } |
| 386 | break; |
| 387 | case XML_CATA_PUBLIC: |
| 388 | case XML_CATA_SYSTEM: |
| 389 | case XML_CATA_DELEGATE: |
| 390 | cur = xmlParseCatalogPubid(cur, &name); |
| 391 | if (cur == NULL) { |
| 392 | /* error */ |
| 393 | break; |
| 394 | } |
| 395 | if (!IS_BLANK(*cur)) { |
| 396 | /* error */ |
| 397 | break; |
| 398 | } |
| 399 | SKIP_BLANKS; |
| 400 | cur = xmlParseCatalogPubid(cur, &sysid); |
| 401 | if (cur == NULL) { |
| 402 | /* error */ |
| 403 | break; |
| 404 | } |
| 405 | break; |
| 406 | case XML_CATA_BASE: |
| 407 | case XML_CATA_CATALOG: |
| 408 | case XML_CATA_DOCUMENT: |
| 409 | case XML_CATA_SGMLDECL: |
| 410 | cur = xmlParseCatalogPubid(cur, &sysid); |
| 411 | if (cur == NULL) { |
| 412 | /* error */ |
| 413 | break; |
| 414 | } |
| 415 | break; |
| 416 | default: |
| 417 | break; |
| 418 | } |
| 419 | if (cur == NULL) { |
| 420 | if (name != NULL) |
| 421 | xmlFree(name); |
| 422 | if (sysid != NULL) |
| 423 | xmlFree(sysid); |
| 424 | break; |
| 425 | } else if (type == XML_CATA_BASE) { |
| 426 | if (base != NULL) |
| 427 | xmlFree(base); |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 428 | base = xmlStrdup(sysid); |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 429 | } else if ((type == XML_CATA_PUBLIC) || |
| 430 | (type == XML_CATA_SYSTEM)) { |
| 431 | xmlChar *filename; |
| 432 | |
| 433 | filename = xmlBuildURI(sysid, base); |
| 434 | if (filename != NULL) { |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 435 | xmlCatalogEntryPtr entry; |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 436 | |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 437 | entry = xmlNewCatalogEntry(type, name, filename); |
| 438 | res = xmlHashAddEntry(xmlDefaultCatalog, name, entry); |
| 439 | if (res < 0) { |
| 440 | xmlFreeCatalogEntry(entry); |
| 441 | } |
| 442 | xmlFree(filename); |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 443 | } |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 444 | |
| 445 | } else if (type == XML_CATA_CATALOG) { |
| 446 | xmlChar *filename; |
| 447 | |
| 448 | filename = xmlBuildURI(sysid, base); |
| 449 | if (filename != NULL) { |
| 450 | xmlLoadCatalog((const char *)filename); |
| 451 | xmlFree(filename); |
| 452 | } |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 453 | } |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 454 | /* |
| 455 | * drop anything else we won't handle it |
| 456 | */ |
| 457 | if (name != NULL) |
| 458 | xmlFree(name); |
| 459 | if (sysid != NULL) |
| 460 | xmlFree(sysid); |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 461 | } |
| 462 | } |
| 463 | if (base != NULL) |
| 464 | xmlFree(base); |
| 465 | if (cur == NULL) |
| 466 | return(-1); |
| 467 | return(0); |
| 468 | } |
| 469 | |
| 470 | /************************************************************************ |
| 471 | * * |
| 472 | * Public interfaces * |
| 473 | * * |
| 474 | ************************************************************************/ |
| 475 | |
| 476 | /* |
| 477 | * xmlLoadCatalog: |
| 478 | * @filename: a file path |
| 479 | * |
Daniel Veillard | 81418e3 | 2001-05-22 15:08:55 +0000 | [diff] [blame] | 480 | * Load the catalog and makes its definitions effective for the default |
| 481 | * external entity loader. It will recuse in CATALOG entries. |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 482 | * TODO: this function is not thread safe, catalog initialization should |
| 483 | * be done once at startup |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 484 | * |
| 485 | * Returns 0 in case of success -1 in case of error |
| 486 | */ |
| 487 | int |
| 488 | xmlLoadCatalog(const char *filename) { |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 489 | int fd, len, ret, i; |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 490 | struct stat info; |
| 491 | xmlChar *content; |
| 492 | |
| 493 | if (filename == NULL) |
| 494 | return(-1); |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 495 | |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 496 | if (xmlDefaultCatalog == NULL) |
| 497 | xmlDefaultCatalog = xmlHashCreate(20); |
| 498 | if (xmlDefaultCatalog == NULL) |
| 499 | return(-1); |
| 500 | |
| 501 | if (stat(filename, &info) < 0) |
| 502 | return(-1); |
| 503 | |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 504 | /* |
| 505 | * Prevent loops |
| 506 | */ |
| 507 | for (i = 0;i < catalNr;i++) { |
Daniel Veillard | 81418e3 | 2001-05-22 15:08:55 +0000 | [diff] [blame] | 508 | if (xmlStrEqual((const xmlChar *)catalTab[i], |
| 509 | (const xmlChar *)filename)) { |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 510 | xmlGenericError(xmlGenericErrorContext, |
| 511 | "xmlLoadCatalog: %s seems to induce a loop\n", |
| 512 | filename); |
| 513 | return(-1); |
| 514 | } |
| 515 | } |
| 516 | if (catalNr >= catalMax) { |
| 517 | xmlGenericError(xmlGenericErrorContext, |
| 518 | "xmlLoadCatalog: %s catalog list too deep\n", |
| 519 | filename); |
| 520 | return(-1); |
| 521 | } |
| 522 | catalTab[catalNr++] = filename; |
| 523 | |
| 524 | if ((fd = open(filename, O_RDONLY)) < 0) { |
| 525 | catalNr--; |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 526 | return(-1); |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 527 | } |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 528 | |
| 529 | content = xmlMalloc(info.st_size + 10); |
| 530 | if (content == NULL) { |
| 531 | xmlGenericError(xmlGenericErrorContext, |
| 532 | "realloc of %d byte failed\n", info.st_size + 10); |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 533 | catalNr--; |
| 534 | return(-1); |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 535 | } |
| 536 | len = read(fd, content, info.st_size); |
| 537 | if (len < 0) { |
| 538 | xmlFree(content); |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 539 | catalNr--; |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 540 | return(-1); |
| 541 | } |
| 542 | content[len] = 0; |
| 543 | close(fd); |
| 544 | |
| 545 | ret = xmlParseCatalog(content, filename); |
| 546 | xmlFree(content); |
Daniel Veillard | af86c7f | 2001-05-21 14:11:26 +0000 | [diff] [blame] | 547 | catalNr--; |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 548 | return(ret); |
| 549 | } |
| 550 | |
Daniel Veillard | 81418e3 | 2001-05-22 15:08:55 +0000 | [diff] [blame] | 551 | /* |
| 552 | * xmlLoadCatalogs: |
| 553 | * @paths: a list of file path separated by ':' or spaces |
| 554 | * |
| 555 | * Load the catalogs and makes their definitions effective for the default |
| 556 | * external entity loader. |
| 557 | * TODO: this function is not thread safe, catalog initialization should |
| 558 | * be done once at startup |
| 559 | */ |
| 560 | void |
| 561 | xmlLoadCatalogs(const char *pathss) { |
| 562 | const char *cur; |
| 563 | const char *paths; |
| 564 | xmlChar *path; |
| 565 | |
| 566 | cur = pathss; |
| 567 | while ((cur != NULL) && (*cur != 0)) { |
| 568 | while (IS_BLANK(*cur)) cur++; |
| 569 | if (*cur != 0) { |
| 570 | paths = cur; |
| 571 | while ((*cur != 0) && (*cur != ':') && (!IS_BLANK(*cur))) |
| 572 | cur++; |
| 573 | path = xmlStrndup((const xmlChar *)paths, cur - paths); |
| 574 | if (path != NULL) { |
| 575 | xmlLoadCatalog((const char *) path); |
| 576 | xmlFree(path); |
| 577 | } |
| 578 | } |
| 579 | while (*cur == ':') |
| 580 | cur++; |
| 581 | } |
| 582 | } |
| 583 | |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 584 | /** |
| 585 | * xmlCatalogCleanup: |
| 586 | * |
| 587 | * Free up all the memory associated with catalogs |
| 588 | */ |
| 589 | void |
| 590 | xmlCatalogCleanup(void) { |
| 591 | if (xmlDefaultCatalog != NULL) |
| 592 | xmlHashFree(xmlDefaultCatalog, |
| 593 | (xmlHashDeallocator) xmlFreeCatalogEntry); |
| 594 | xmlDefaultCatalog = NULL; |
| 595 | } |
| 596 | |
| 597 | /** |
Daniel Veillard | 7d6fd21 | 2001-05-10 15:34:11 +0000 | [diff] [blame] | 598 | * xmlCatalogGetSystem: |
| 599 | * @sysId: the system ID string |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 600 | * |
Daniel Veillard | 7d6fd21 | 2001-05-10 15:34:11 +0000 | [diff] [blame] | 601 | * Try to lookup the resource associated to a system ID |
| 602 | * |
| 603 | * Returns the resource name if found or NULL otherwise. |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 604 | */ |
Daniel Veillard | 7d6fd21 | 2001-05-10 15:34:11 +0000 | [diff] [blame] | 605 | const xmlChar * |
| 606 | xmlCatalogGetSystem(const xmlChar *sysID) { |
| 607 | xmlCatalogEntryPtr entry; |
| 608 | |
| 609 | if ((sysID == NULL) || (xmlDefaultCatalog == NULL)) |
| 610 | return(NULL); |
| 611 | entry = (xmlCatalogEntryPtr) xmlHashLookup(xmlDefaultCatalog, sysID); |
| 612 | if (entry == NULL) |
| 613 | return(NULL); |
| 614 | if (entry->type == XML_CATA_SYSTEM) |
| 615 | return(entry->value); |
| 616 | return(NULL); |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 617 | } |
| 618 | |
| 619 | /** |
Daniel Veillard | 7d6fd21 | 2001-05-10 15:34:11 +0000 | [diff] [blame] | 620 | * xmlCatalogGetPublic: |
| 621 | * @pubId: the public ID string |
| 622 | * |
| 623 | * Try to lookup the system ID associated to a public ID |
| 624 | * |
| 625 | * Returns the system ID if found or NULL otherwise. |
| 626 | */ |
| 627 | const xmlChar * |
| 628 | xmlCatalogGetPublic(const xmlChar *pubID) { |
| 629 | xmlCatalogEntryPtr entry; |
| 630 | |
| 631 | if ((pubID == NULL) || (xmlDefaultCatalog == NULL)) |
| 632 | return(NULL); |
| 633 | entry = (xmlCatalogEntryPtr) xmlHashLookup(xmlDefaultCatalog, pubID); |
| 634 | if (entry == NULL) |
| 635 | return(NULL); |
| 636 | if (entry->type == XML_CATA_PUBLIC) |
| 637 | return(entry->value); |
| 638 | return(NULL); |
| 639 | } |
| 640 | /** |
Daniel Veillard | a737459 | 2001-05-10 14:17:55 +0000 | [diff] [blame] | 641 | * xmlCatalogDump: |
| 642 | * @out: the file. |
| 643 | * |
| 644 | * Free up all the memory associated with catalogs |
| 645 | */ |
| 646 | void |
| 647 | xmlCatalogDump(FILE *out) { |
| 648 | if (out == NULL) |
| 649 | return; |
| 650 | if (xmlDefaultCatalog != NULL) { |
| 651 | xmlHashScan(xmlDefaultCatalog, |
| 652 | (xmlHashScanner) xmlCatalogDumpEntry, out); |
| 653 | } |
| 654 | } |
| 655 | #endif /* LIBXML_CATALOG_ENABLED */ |