Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1 | /* |
| 2 | * xmlIO.c : implementation of the I/O interfaces used by the parser |
| 3 | * |
| 4 | * See Copyright for the status of this software. |
| 5 | * |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 6 | * Daniel.Veillard@w3.org |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 7 | * |
| 8 | * 14 Nov 2000 ht - for VMS, truncated name of long functions to under 32 char |
| 9 | */ |
| 10 | |
Bjorn Reese | 70a9da5 | 2001-04-21 16:57:29 +0000 | [diff] [blame] | 11 | #include "libxml.h" |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 12 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 13 | #include <string.h> |
| 14 | #include <errno.h> |
| 15 | |
| 16 | #ifdef HAVE_SYS_TYPES_H |
| 17 | #include <sys/types.h> |
| 18 | #endif |
| 19 | #ifdef HAVE_SYS_STAT_H |
| 20 | #include <sys/stat.h> |
| 21 | #endif |
| 22 | #ifdef HAVE_FCNTL_H |
| 23 | #include <fcntl.h> |
| 24 | #endif |
| 25 | #ifdef HAVE_UNISTD_H |
| 26 | #include <unistd.h> |
| 27 | #endif |
| 28 | #ifdef HAVE_STDLIB_H |
| 29 | #include <stdlib.h> |
| 30 | #endif |
| 31 | #ifdef HAVE_ZLIB_H |
| 32 | #include <zlib.h> |
| 33 | #endif |
| 34 | |
| 35 | /* Figure a portable way to know if a file is a directory. */ |
| 36 | #ifndef HAVE_STAT |
| 37 | # ifdef HAVE__STAT |
Daniel Veillard | 50f3437 | 2001-08-03 12:06:36 +0000 | [diff] [blame^] | 38 | /* MS C library seems to define stat and _stat. The definition |
| 39 | is identical. Still, mapping them to each other causes a warning. */ |
| 40 | # ifndef _MSC_VER |
| 41 | # define stat(x,y) _stat(x,y) |
| 42 | # endif |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 43 | # define HAVE_STAT |
| 44 | # endif |
| 45 | #endif |
| 46 | #ifdef HAVE_STAT |
| 47 | # ifndef S_ISDIR |
| 48 | # ifdef _S_ISDIR |
| 49 | # define S_ISDIR(x) _S_ISDIR(x) |
| 50 | # else |
| 51 | # ifdef S_IFDIR |
| 52 | # ifndef S_IFMT |
| 53 | # ifdef _S_IFMT |
| 54 | # define S_IFMT _S_IFMT |
| 55 | # endif |
| 56 | # endif |
| 57 | # ifdef S_IFMT |
| 58 | # define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) |
| 59 | # endif |
| 60 | # endif |
| 61 | # endif |
| 62 | # endif |
| 63 | #endif |
| 64 | |
| 65 | #include <libxml/xmlmemory.h> |
| 66 | #include <libxml/parser.h> |
| 67 | #include <libxml/parserInternals.h> |
| 68 | #include <libxml/xmlIO.h> |
Daniel Veillard | 388236f | 2001-07-08 18:35:48 +0000 | [diff] [blame] | 69 | #include <libxml/uri.h> |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 70 | #include <libxml/nanohttp.h> |
| 71 | #include <libxml/nanoftp.h> |
| 72 | #include <libxml/xmlerror.h> |
Daniel Veillard | 7d6fd21 | 2001-05-10 15:34:11 +0000 | [diff] [blame] | 73 | #ifdef LIBXML_CATALOG_ENABLED |
| 74 | #include <libxml/catalog.h> |
| 75 | #endif |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 76 | |
| 77 | #ifdef VMS |
| 78 | #define xmlRegisterDefaultInputCallbacks xmlRegisterDefInputCallbacks |
| 79 | #define xmlRegisterDefaultOutputCallbacks xmlRegisterDefOutputCallbacks |
| 80 | #endif |
| 81 | |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 82 | /* #define VERBOSE_FAILURE */ |
Daniel Veillard | 1fd36d2 | 2001-07-04 22:54:28 +0000 | [diff] [blame] | 83 | /* #define DEBUG_EXTERNAL_ENTITIES */ |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 84 | /* #define DEBUG_INPUT */ |
| 85 | |
| 86 | #ifdef DEBUG_INPUT |
| 87 | #define MINLEN 40 |
| 88 | #else |
| 89 | #define MINLEN 4000 |
| 90 | #endif |
| 91 | |
| 92 | /* |
| 93 | * Input I/O callback sets |
| 94 | */ |
| 95 | typedef struct _xmlInputCallback { |
| 96 | xmlInputMatchCallback matchcallback; |
| 97 | xmlInputOpenCallback opencallback; |
| 98 | xmlInputReadCallback readcallback; |
| 99 | xmlInputCloseCallback closecallback; |
| 100 | } xmlInputCallback; |
| 101 | |
| 102 | #define MAX_INPUT_CALLBACK 15 |
| 103 | |
Daniel Veillard | 2209073 | 2001-07-16 00:06:07 +0000 | [diff] [blame] | 104 | static xmlInputCallback xmlInputCallbackTable[MAX_INPUT_CALLBACK]; |
| 105 | static int xmlInputCallbackNr = 0; |
| 106 | static int xmlInputCallbackInitialized = 0; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 107 | |
| 108 | /* |
| 109 | * Output I/O callback sets |
| 110 | */ |
| 111 | typedef struct _xmlOutputCallback { |
| 112 | xmlOutputMatchCallback matchcallback; |
| 113 | xmlOutputOpenCallback opencallback; |
| 114 | xmlOutputWriteCallback writecallback; |
| 115 | xmlOutputCloseCallback closecallback; |
| 116 | } xmlOutputCallback; |
| 117 | |
| 118 | #define MAX_OUTPUT_CALLBACK 15 |
| 119 | |
Daniel Veillard | 2209073 | 2001-07-16 00:06:07 +0000 | [diff] [blame] | 120 | static xmlOutputCallback xmlOutputCallbackTable[MAX_OUTPUT_CALLBACK]; |
| 121 | static int xmlOutputCallbackNr = 0; |
| 122 | static int xmlOutputCallbackInitialized = 0; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 123 | |
| 124 | /************************************************************************ |
| 125 | * * |
| 126 | * Standard I/O for file accesses * |
| 127 | * * |
| 128 | ************************************************************************/ |
| 129 | |
| 130 | /** |
| 131 | * xmlCheckFilename |
| 132 | * @path: the path to check |
| 133 | * |
| 134 | * function checks to see if @path is a valid source |
| 135 | * (file, socket...) for XML. |
| 136 | * |
| 137 | * if stat is not available on the target machine, |
| 138 | * returns 1. if stat fails, returns 0 (if calling |
| 139 | * stat on the filename fails, it can't be right). |
| 140 | * if stat succeeds and the file is a directory, |
| 141 | * sets errno to EISDIR and returns 0. otherwise |
| 142 | * returns 1. |
| 143 | */ |
| 144 | |
| 145 | static int |
| 146 | xmlCheckFilename (const char *path) |
| 147 | { |
| 148 | #ifdef HAVE_STAT |
| 149 | #ifdef S_ISDIR |
| 150 | struct stat stat_buffer; |
| 151 | |
| 152 | if (stat(path, &stat_buffer) == -1) |
| 153 | return 0; |
| 154 | |
| 155 | if (S_ISDIR(stat_buffer.st_mode)) { |
| 156 | errno = EISDIR; |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | #endif |
| 161 | #endif |
| 162 | return 1; |
| 163 | } |
| 164 | |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 165 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 166 | xmlNop(void) { |
| 167 | return(0); |
| 168 | } |
| 169 | |
| 170 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 171 | * xmlFdRead: |
| 172 | * @context: the I/O context |
| 173 | * @buffer: where to drop data |
| 174 | * @len: number of bytes to read |
| 175 | * |
| 176 | * Read @len bytes to @buffer from the I/O channel. |
| 177 | * |
| 178 | * Returns the number of bytes written |
| 179 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 180 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 181 | xmlFdRead (void * context, char * buffer, int len) { |
Daniel Veillard | 8fcc494 | 2001-07-17 20:07:33 +0000 | [diff] [blame] | 182 | return(read((int) (long) context, &buffer[0], len)); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 183 | } |
| 184 | |
| 185 | /** |
| 186 | * xmlFdWrite: |
| 187 | * @context: the I/O context |
| 188 | * @buffer: where to get data |
| 189 | * @len: number of bytes to write |
| 190 | * |
| 191 | * Write @len bytes from @buffer to the I/O channel. |
| 192 | * |
| 193 | * Returns the number of bytes written |
| 194 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 195 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 196 | xmlFdWrite (void * context, const char * buffer, int len) { |
Daniel Veillard | 8fcc494 | 2001-07-17 20:07:33 +0000 | [diff] [blame] | 197 | return(write((int) (long) context, &buffer[0], len)); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | /** |
| 201 | * xmlFdClose: |
| 202 | * @context: the I/O context |
| 203 | * |
| 204 | * Close an I/O channel |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 205 | * |
| 206 | * Returns 0 in case of success and error code otherwise |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 207 | */ |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 208 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 209 | xmlFdClose (void * context) { |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 210 | return ( close((int) (long) context) ); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | /** |
| 214 | * xmlFileMatch: |
| 215 | * @filename: the URI for matching |
| 216 | * |
| 217 | * input from FILE * |
| 218 | * |
| 219 | * Returns 1 if matches, 0 otherwise |
| 220 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 221 | static int |
Daniel Veillard | c86a4fa | 2001-03-26 16:28:29 +0000 | [diff] [blame] | 222 | xmlFileMatch (const char *filename ATTRIBUTE_UNUSED) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 223 | return(1); |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * xmlFileOpen: |
| 228 | * @filename: the URI for matching |
| 229 | * |
| 230 | * input from FILE *, supports compressed input |
| 231 | * if @filename is " " then the standard input is used |
| 232 | * |
| 233 | * Returns an I/O context or NULL in case of error |
| 234 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 235 | static void * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 236 | xmlFileOpen (const char *filename) { |
| 237 | const char *path = NULL; |
| 238 | FILE *fd; |
| 239 | |
| 240 | if (!strcmp(filename, "-")) { |
| 241 | fd = stdin; |
| 242 | return((void *) fd); |
| 243 | } |
| 244 | |
| 245 | if (!strncmp(filename, "file://localhost", 16)) |
| 246 | path = &filename[16]; |
| 247 | else if (!strncmp(filename, "file:///", 8)) |
Daniel Veillard | 3c2758d | 2001-05-31 18:43:43 +0000 | [diff] [blame] | 248 | path = &filename[7]; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 249 | else |
| 250 | path = filename; |
| 251 | |
| 252 | if (path == NULL) |
| 253 | return(NULL); |
| 254 | if (!xmlCheckFilename(path)) |
| 255 | return(NULL); |
| 256 | |
| 257 | #ifdef WIN32 |
| 258 | fd = fopen(path, "rb"); |
| 259 | #else |
| 260 | fd = fopen(path, "r"); |
| 261 | #endif /* WIN32 */ |
| 262 | return((void *) fd); |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * xmlFileOpenW: |
| 267 | * @filename: the URI for matching |
| 268 | * |
| 269 | * output to from FILE *, |
| 270 | * if @filename is "-" then the standard output is used |
| 271 | * |
| 272 | * Returns an I/O context or NULL in case of error |
| 273 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 274 | static void * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 275 | xmlFileOpenW (const char *filename) { |
| 276 | const char *path = NULL; |
| 277 | FILE *fd; |
| 278 | |
| 279 | if (!strcmp(filename, "-")) { |
| 280 | fd = stdout; |
| 281 | return((void *) fd); |
| 282 | } |
| 283 | |
| 284 | if (!strncmp(filename, "file://localhost", 16)) |
| 285 | path = &filename[16]; |
| 286 | else if (!strncmp(filename, "file:///", 8)) |
Daniel Veillard | 3c2758d | 2001-05-31 18:43:43 +0000 | [diff] [blame] | 287 | path = &filename[7]; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 288 | else |
| 289 | path = filename; |
| 290 | |
| 291 | if (path == NULL) |
| 292 | return(NULL); |
| 293 | |
| 294 | fd = fopen(path, "w"); |
| 295 | return((void *) fd); |
| 296 | } |
| 297 | |
| 298 | /** |
| 299 | * xmlFileRead: |
| 300 | * @context: the I/O context |
| 301 | * @buffer: where to drop data |
| 302 | * @len: number of bytes to write |
| 303 | * |
| 304 | * Read @len bytes to @buffer from the I/O channel. |
| 305 | * |
| 306 | * Returns the number of bytes written |
| 307 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 308 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 309 | xmlFileRead (void * context, char * buffer, int len) { |
| 310 | return(fread(&buffer[0], 1, len, (FILE *) context)); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * xmlFileWrite: |
| 315 | * @context: the I/O context |
| 316 | * @buffer: where to drop data |
| 317 | * @len: number of bytes to write |
| 318 | * |
| 319 | * Write @len bytes from @buffer to the I/O channel. |
| 320 | * |
| 321 | * Returns the number of bytes written |
| 322 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 323 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 324 | xmlFileWrite (void * context, const char * buffer, int len) { |
| 325 | return(fwrite(&buffer[0], 1, len, (FILE *) context)); |
| 326 | } |
| 327 | |
| 328 | /** |
| 329 | * xmlFileClose: |
| 330 | * @context: the I/O context |
| 331 | * |
| 332 | * Close an I/O channel |
| 333 | */ |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 334 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 335 | xmlFileClose (void * context) { |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 336 | return ( ( fclose((FILE *) context) == EOF ) ? -1 : 0 ); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 337 | } |
| 338 | |
| 339 | /** |
| 340 | * xmlFileFlush: |
| 341 | * @context: the I/O context |
| 342 | * |
| 343 | * Flush an I/O channel |
| 344 | */ |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 345 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 346 | xmlFileFlush (void * context) { |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 347 | return ( ( fflush((FILE *) context) == EOF ) ? -1 : 0 ); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 348 | } |
| 349 | |
| 350 | #ifdef HAVE_ZLIB_H |
| 351 | /************************************************************************ |
| 352 | * * |
| 353 | * I/O for compressed file accesses * |
| 354 | * * |
| 355 | ************************************************************************/ |
| 356 | /** |
| 357 | * xmlGzfileMatch: |
| 358 | * @filename: the URI for matching |
| 359 | * |
| 360 | * input from compressed file test |
| 361 | * |
| 362 | * Returns 1 if matches, 0 otherwise |
| 363 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 364 | static int |
Daniel Veillard | c86a4fa | 2001-03-26 16:28:29 +0000 | [diff] [blame] | 365 | xmlGzfileMatch (const char *filename ATTRIBUTE_UNUSED) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 366 | return(1); |
| 367 | } |
| 368 | |
| 369 | /** |
| 370 | * xmlGzfileOpen: |
| 371 | * @filename: the URI for matching |
| 372 | * |
| 373 | * input from compressed file open |
| 374 | * if @filename is " " then the standard input is used |
| 375 | * |
| 376 | * Returns an I/O context or NULL in case of error |
| 377 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 378 | static void * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 379 | xmlGzfileOpen (const char *filename) { |
| 380 | const char *path = NULL; |
| 381 | gzFile fd; |
| 382 | |
| 383 | if (!strcmp(filename, "-")) { |
| 384 | fd = gzdopen(fileno(stdin), "rb"); |
| 385 | return((void *) fd); |
| 386 | } |
| 387 | |
| 388 | if (!strncmp(filename, "file://localhost", 16)) |
| 389 | path = &filename[16]; |
| 390 | else if (!strncmp(filename, "file:///", 8)) |
| 391 | path = &filename[7]; |
| 392 | else |
| 393 | path = filename; |
| 394 | |
| 395 | if (path == NULL) |
| 396 | return(NULL); |
| 397 | if (!xmlCheckFilename(path)) |
| 398 | return(NULL); |
| 399 | |
| 400 | fd = gzopen(path, "rb"); |
| 401 | return((void *) fd); |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * xmlGzfileOpenW: |
| 406 | * @filename: the URI for matching |
| 407 | * @compression: the compression factor (0 - 9 included) |
| 408 | * |
| 409 | * input from compressed file open |
| 410 | * if @filename is " " then the standard input is used |
| 411 | * |
| 412 | * Returns an I/O context or NULL in case of error |
| 413 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 414 | static void * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 415 | xmlGzfileOpenW (const char *filename, int compression) { |
| 416 | const char *path = NULL; |
| 417 | char mode[15]; |
| 418 | gzFile fd; |
| 419 | |
| 420 | sprintf(mode, "wb%d", compression); |
| 421 | if (!strcmp(filename, "-")) { |
| 422 | fd = gzdopen(1, mode); |
| 423 | return((void *) fd); |
| 424 | } |
| 425 | |
| 426 | if (!strncmp(filename, "file://localhost", 16)) |
| 427 | path = &filename[16]; |
| 428 | else if (!strncmp(filename, "file:///", 8)) |
Daniel Veillard | 3c2758d | 2001-05-31 18:43:43 +0000 | [diff] [blame] | 429 | path = &filename[7]; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 430 | else |
| 431 | path = filename; |
| 432 | |
| 433 | if (path == NULL) |
| 434 | return(NULL); |
| 435 | |
| 436 | fd = gzopen(path, mode); |
| 437 | return((void *) fd); |
| 438 | } |
| 439 | |
| 440 | /** |
| 441 | * xmlGzfileRead: |
| 442 | * @context: the I/O context |
| 443 | * @buffer: where to drop data |
| 444 | * @len: number of bytes to write |
| 445 | * |
| 446 | * Read @len bytes to @buffer from the compressed I/O channel. |
| 447 | * |
| 448 | * Returns the number of bytes written |
| 449 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 450 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 451 | xmlGzfileRead (void * context, char * buffer, int len) { |
| 452 | return(gzread((gzFile) context, &buffer[0], len)); |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * xmlGzfileWrite: |
| 457 | * @context: the I/O context |
| 458 | * @buffer: where to drop data |
| 459 | * @len: number of bytes to write |
| 460 | * |
| 461 | * Write @len bytes from @buffer to the compressed I/O channel. |
| 462 | * |
| 463 | * Returns the number of bytes written |
| 464 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 465 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 466 | xmlGzfileWrite (void * context, const char * buffer, int len) { |
| 467 | return(gzwrite((gzFile) context, (char *) &buffer[0], len)); |
| 468 | } |
| 469 | |
| 470 | /** |
| 471 | * xmlGzfileClose: |
| 472 | * @context: the I/O context |
| 473 | * |
| 474 | * Close a compressed I/O channel |
| 475 | */ |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 476 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 477 | xmlGzfileClose (void * context) { |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 478 | return ( ( gzclose((gzFile) context) == Z_OK ) ? 0 : -1 ); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 479 | } |
| 480 | #endif /* HAVE_ZLIB_H */ |
| 481 | |
| 482 | #ifdef LIBXML_HTTP_ENABLED |
| 483 | /************************************************************************ |
| 484 | * * |
| 485 | * I/O for HTTP file accesses * |
| 486 | * * |
| 487 | ************************************************************************/ |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 488 | |
| 489 | typedef struct xmlIOHTTPWriteCtxt_ |
| 490 | { |
| 491 | int compression; |
| 492 | |
| 493 | char * uri; |
| 494 | |
| 495 | void * doc_buff; |
| 496 | |
| 497 | } xmlIOHTTPWriteCtxt, *xmlIOHTTPWriteCtxtPtr; |
| 498 | |
| 499 | #ifdef HAVE_ZLIB_H |
| 500 | |
| 501 | #define DFLT_WBITS ( -15 ) |
| 502 | #define DFLT_MEM_LVL ( 8 ) |
| 503 | #define GZ_MAGIC1 ( 0x1f ) |
| 504 | #define GZ_MAGIC2 ( 0x8b ) |
| 505 | #define LXML_ZLIB_OS_CODE ( 0x03 ) |
| 506 | #define INIT_HTTP_BUFF_SIZE ( 32768 ) |
| 507 | #define DFLT_ZLIB_RATIO ( 5 ) |
| 508 | |
| 509 | /* |
| 510 | ** Data structure and functions to work with sending compressed data |
| 511 | ** via HTTP. |
| 512 | */ |
| 513 | |
| 514 | typedef struct xmlZMemBuff_ |
| 515 | { |
| 516 | unsigned long size; |
| 517 | unsigned long crc; |
| 518 | |
| 519 | unsigned char * zbuff; |
| 520 | z_stream zctrl; |
| 521 | |
| 522 | } xmlZMemBuff, *xmlZMemBuffPtr; |
| 523 | |
| 524 | /** |
| 525 | * append_reverse_ulong |
| 526 | * @buff: Compressed memory buffer |
| 527 | * @data: Unsigned long to append |
| 528 | * |
| 529 | * Append a unsigned long in reverse byte order to the end of the |
| 530 | * memory buffer. |
| 531 | */ |
| 532 | static void |
| 533 | append_reverse_ulong( xmlZMemBuff * buff, unsigned long data ) { |
| 534 | |
| 535 | int idx; |
| 536 | |
| 537 | if ( buff == NULL ) |
| 538 | return; |
| 539 | |
| 540 | /* |
| 541 | ** This is plagiarized from putLong in gzio.c (zlib source) where |
| 542 | ** the number "4" is hardcoded. If zlib is ever patched to |
| 543 | ** support 64 bit file sizes, this code would need to be patched |
| 544 | ** as well. |
| 545 | */ |
| 546 | |
| 547 | for ( idx = 0; idx < 4; idx++ ) { |
| 548 | *buff->zctrl.next_out = ( data & 0xff ); |
| 549 | data >>= 8; |
| 550 | buff->zctrl.next_out++; |
| 551 | } |
| 552 | |
| 553 | return; |
| 554 | } |
| 555 | |
| 556 | /** |
| 557 | * |
| 558 | * xmlFreeZMemBuff |
| 559 | * @buff: The memory buffer context to clear |
| 560 | * |
| 561 | * Release all the resources associated with the compressed memory buffer. |
| 562 | */ |
| 563 | static void |
| 564 | xmlFreeZMemBuff( xmlZMemBuffPtr buff ) { |
| 565 | |
| 566 | int z_err; |
| 567 | |
| 568 | if ( buff == NULL ) |
| 569 | return; |
| 570 | |
| 571 | xmlFree( buff->zbuff ); |
| 572 | z_err = deflateEnd( &buff->zctrl ); |
| 573 | #ifdef DEBUG_HTTP |
| 574 | if ( z_err != Z_OK ) |
| 575 | xmlGenericError( xmlGenericErrorContext, |
| 576 | "xmlFreeZMemBuff: Error releasing zlib context: %d\n", |
| 577 | z_err ); |
| 578 | #endif |
| 579 | |
| 580 | xmlFree( buff ); |
| 581 | return; |
| 582 | } |
| 583 | |
| 584 | /** |
| 585 | * xmlCreateZMemBuff |
| 586 | *@compression: Compression value to use |
| 587 | * |
| 588 | * Create a memory buffer to hold the compressed XML document. The |
| 589 | * compressed document in memory will end up being identical to what |
| 590 | * would be created if gzopen/gzwrite/gzclose were being used to |
| 591 | * write the document to disk. The code for the header/trailer data to |
| 592 | * the compression is plagiarized from the zlib source files. |
| 593 | */ |
| 594 | static void * |
| 595 | xmlCreateZMemBuff( int compression ) { |
| 596 | |
| 597 | int z_err; |
| 598 | int hdr_lgth; |
| 599 | xmlZMemBuffPtr buff = NULL; |
| 600 | |
| 601 | if ( ( compression < 1 ) || ( compression > 9 ) ) |
| 602 | return ( NULL ); |
| 603 | |
| 604 | /* Create the control and data areas */ |
| 605 | |
| 606 | buff = xmlMalloc( sizeof( xmlZMemBuff ) ); |
| 607 | if ( buff == NULL ) { |
| 608 | xmlGenericError( xmlGenericErrorContext, |
| 609 | "xmlCreateZMemBuff: %s\n", |
| 610 | "Failure allocating buffer context." ); |
| 611 | return ( NULL ); |
| 612 | } |
| 613 | |
| 614 | (void)memset( buff, 0, sizeof( xmlZMemBuff ) ); |
| 615 | buff->size = INIT_HTTP_BUFF_SIZE; |
| 616 | buff->zbuff = xmlMalloc( buff->size ); |
| 617 | if ( buff->zbuff == NULL ) { |
| 618 | xmlFreeZMemBuff( buff ); |
| 619 | xmlGenericError( xmlGenericErrorContext, |
| 620 | "xmlCreateZMemBuff: %s\n", |
| 621 | "Failure allocating data buffer." ); |
| 622 | return ( NULL ); |
| 623 | } |
| 624 | |
| 625 | z_err = deflateInit2( &buff->zctrl, compression, Z_DEFLATED, |
| 626 | DFLT_WBITS, DFLT_MEM_LVL, Z_DEFAULT_STRATEGY ); |
| 627 | if ( z_err != Z_OK ) { |
| 628 | xmlFreeZMemBuff( buff ); |
| 629 | buff = NULL; |
| 630 | xmlGenericError( xmlGenericErrorContext, |
| 631 | "xmlCreateZMemBuff: %s %d\n", |
| 632 | "Error initializing compression context. ZLIB error:", |
| 633 | z_err ); |
| 634 | return ( NULL ); |
| 635 | } |
| 636 | |
| 637 | /* Set the header data. The CRC will be needed for the trailer */ |
| 638 | |
| 639 | buff->crc = crc32( 0L, Z_NULL, 0 ); |
| 640 | hdr_lgth = sprintf( (char *)buff->zbuff, "%c%c%c%c%c%c%c%c%c%c", |
| 641 | GZ_MAGIC1, GZ_MAGIC2, Z_DEFLATED, |
| 642 | 0, 0, 0, 0, 0, 0, LXML_ZLIB_OS_CODE ); |
| 643 | buff->zctrl.next_out = buff->zbuff + hdr_lgth; |
| 644 | buff->zctrl.avail_out = buff->size - hdr_lgth; |
| 645 | |
| 646 | return ( buff ); |
| 647 | } |
| 648 | |
| 649 | /** |
| 650 | * xmlZMemBuffExtend |
| 651 | * @buff: Buffer used to compress and consolidate data. |
| 652 | * @ext_amt: Number of bytes to extend the buffer. |
| 653 | * |
| 654 | * Extend the internal buffer used to store the compressed data by the |
| 655 | * specified amount. |
| 656 | * |
| 657 | * Returns 0 on success or -1 on failure to extend the buffer. On failure |
| 658 | * the original buffer still exists at the original size. |
| 659 | */ |
| 660 | static int |
| 661 | xmlZMemBuffExtend( xmlZMemBuffPtr buff, size_t ext_amt ) { |
| 662 | |
| 663 | int rc = -1; |
| 664 | size_t new_size; |
| 665 | size_t cur_used; |
| 666 | |
| 667 | unsigned char * tmp_ptr = NULL; |
| 668 | |
| 669 | if ( buff == NULL ) |
| 670 | return ( -1 ); |
| 671 | |
| 672 | else if ( ext_amt == 0 ) |
| 673 | return ( 0 ); |
| 674 | |
| 675 | cur_used = buff->zctrl.next_out - buff->zbuff; |
| 676 | new_size = buff->size + ext_amt; |
| 677 | |
| 678 | #ifdef DEBUG_HTTP |
| 679 | if ( cur_used > new_size ) |
| 680 | xmlGenericError( xmlGenericErrorContext, |
| 681 | "xmlZMemBuffExtend: %s\n%s %d bytes.\n", |
| 682 | "Buffer overwrite detected during compressed memory", |
| 683 | "buffer extension. Overflowed by", |
| 684 | (cur_used - new_size ) ); |
| 685 | #endif |
| 686 | |
| 687 | tmp_ptr = xmlRealloc( buff->zbuff, new_size ); |
| 688 | if ( tmp_ptr != NULL ) { |
| 689 | rc = 0; |
| 690 | buff->size = new_size; |
| 691 | buff->zbuff = tmp_ptr; |
| 692 | buff->zctrl.next_out = tmp_ptr + cur_used; |
| 693 | buff->zctrl.avail_out = new_size - cur_used; |
| 694 | } |
| 695 | else { |
| 696 | xmlGenericError( xmlGenericErrorContext, |
| 697 | "xmlZMemBuffExtend: %s %lu bytes.\n", |
| 698 | "Allocation failure extending output buffer to", |
| 699 | new_size ); |
| 700 | } |
| 701 | |
| 702 | return ( rc ); |
| 703 | } |
| 704 | |
| 705 | /** |
| 706 | * xmlZMemBuffAppend |
| 707 | * @buff: Buffer used to compress and consolidate data |
| 708 | * @src: Uncompressed source content to append to buffer |
| 709 | * @len: Length of source data to append to buffer |
| 710 | * |
| 711 | * Compress and append data to the internal buffer. The data buffer |
| 712 | * will be expanded if needed to store the additional data. |
| 713 | * |
| 714 | * Returns the number of bytes appended to the buffer or -1 on error. |
| 715 | */ |
| 716 | static int |
| 717 | xmlZMemBuffAppend( xmlZMemBuffPtr buff, const char * src, int len ) { |
| 718 | |
| 719 | int z_err; |
| 720 | size_t min_accept; |
| 721 | |
| 722 | if ( ( buff == NULL ) || ( src == NULL ) ) |
| 723 | return ( -1 ); |
| 724 | |
| 725 | buff->zctrl.avail_in = len; |
| 726 | buff->zctrl.next_in = (unsigned char *)src; |
| 727 | while ( buff->zctrl.avail_in > 0 ) { |
| 728 | /* |
| 729 | ** Extend the buffer prior to deflate call if a reasonable amount |
| 730 | ** of output buffer space is not available. |
| 731 | */ |
| 732 | min_accept = buff->zctrl.avail_in / DFLT_ZLIB_RATIO; |
| 733 | if ( buff->zctrl.avail_out <= min_accept ) { |
| 734 | if ( xmlZMemBuffExtend( buff, buff->size ) == -1 ) |
| 735 | return ( -1 ); |
| 736 | } |
| 737 | |
| 738 | z_err = deflate( &buff->zctrl, Z_NO_FLUSH ); |
| 739 | if ( z_err != Z_OK ) { |
| 740 | xmlGenericError( xmlGenericErrorContext, |
| 741 | "xmlZMemBuffAppend: %s %d %s - %d", |
| 742 | "Compression error while appending", |
| 743 | len, "bytes to buffer. ZLIB error", z_err ); |
| 744 | return ( -1 ); |
| 745 | } |
| 746 | } |
| 747 | |
| 748 | buff->crc = crc32( buff->crc, (unsigned char *)src, len ); |
| 749 | |
| 750 | return ( len ); |
| 751 | } |
| 752 | |
| 753 | /** |
| 754 | * xmlZMemBuffGetContent |
| 755 | * @buff: Compressed memory content buffer |
| 756 | * @data_ref: Pointer reference to point to compressed content |
| 757 | * |
| 758 | * Flushes the compression buffers, appends gzip file trailers and |
| 759 | * returns the compressed content and length of the compressed data. |
| 760 | * NOTE: The gzip trailer code here is plagiarized from zlib source. |
| 761 | * |
| 762 | * Returns the length of the compressed data or -1 on error. |
| 763 | */ |
| 764 | static int |
| 765 | xmlZMemBuffGetContent( xmlZMemBuffPtr buff, char ** data_ref ) { |
| 766 | |
| 767 | int zlgth = -1; |
| 768 | int z_err; |
| 769 | |
| 770 | if ( ( buff == NULL ) || ( data_ref == NULL ) ) |
| 771 | return ( -1 ); |
| 772 | |
| 773 | /* Need to loop until compression output buffers are flushed */ |
| 774 | |
| 775 | do |
| 776 | { |
| 777 | z_err = deflate( &buff->zctrl, Z_FINISH ); |
| 778 | if ( z_err == Z_OK ) { |
| 779 | /* In this case Z_OK means more buffer space needed */ |
| 780 | |
| 781 | if ( xmlZMemBuffExtend( buff, buff->size ) == -1 ) |
| 782 | return ( -1 ); |
| 783 | } |
| 784 | } |
| 785 | while ( z_err == Z_OK ); |
| 786 | |
| 787 | /* If the compression state is not Z_STREAM_END, some error occurred */ |
| 788 | |
| 789 | if ( z_err == Z_STREAM_END ) { |
| 790 | |
| 791 | /* Need to append the gzip data trailer */ |
| 792 | |
| 793 | if ( buff->zctrl.avail_out < ( 2 * sizeof( unsigned long ) ) ) { |
| 794 | if ( xmlZMemBuffExtend(buff, (2 * sizeof(unsigned long))) == -1 ) |
| 795 | return ( -1 ); |
| 796 | } |
| 797 | |
| 798 | /* |
| 799 | ** For whatever reason, the CRC and length data are pushed out |
| 800 | ** in reverse byte order. So a memcpy can't be used here. |
| 801 | */ |
| 802 | |
| 803 | append_reverse_ulong( buff, buff->crc ); |
| 804 | append_reverse_ulong( buff, buff->zctrl.total_in ); |
| 805 | |
| 806 | zlgth = buff->zctrl.next_out - buff->zbuff; |
| 807 | *data_ref = (char *)buff->zbuff; |
| 808 | } |
| 809 | |
| 810 | else |
| 811 | xmlGenericError( xmlGenericErrorContext, |
| 812 | "xmlZMemBuffGetContent: %s - %d\n", |
| 813 | "Error flushing zlib buffers. Error code", z_err ); |
| 814 | |
| 815 | return ( zlgth ); |
| 816 | } |
| 817 | #endif /* HAVE_ZLIB_H */ |
| 818 | |
| 819 | /** |
| 820 | * xmlFreeHTTPWriteCtxt |
| 821 | * @ctxt: Context to cleanup |
| 822 | * |
| 823 | * Free allocated memory and reclaim system resources. |
| 824 | * |
| 825 | * No return value. |
| 826 | */ |
| 827 | static void |
| 828 | xmlFreeHTTPWriteCtxt( xmlIOHTTPWriteCtxtPtr ctxt ) |
| 829 | { |
| 830 | if ( ctxt->uri != NULL ) |
| 831 | free( ctxt->uri ); |
| 832 | |
| 833 | if ( ctxt->doc_buff != NULL ) { |
| 834 | |
| 835 | #ifdef HAVE_ZLIB_H |
| 836 | if ( ctxt->compression > 0 ) { |
| 837 | xmlFreeZMemBuff( ctxt->doc_buff ); |
| 838 | } |
| 839 | else |
| 840 | #endif |
| 841 | { |
| 842 | xmlOutputBufferClose( ctxt->doc_buff ); |
| 843 | } |
| 844 | } |
| 845 | |
| 846 | free( ctxt ); |
| 847 | return; |
| 848 | } |
| 849 | |
| 850 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 851 | /** |
| 852 | * xmlIOHTTPMatch: |
| 853 | * @filename: the URI for matching |
| 854 | * |
| 855 | * check if the URI matches an HTTP one |
| 856 | * |
| 857 | * Returns 1 if matches, 0 otherwise |
| 858 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 859 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 860 | xmlIOHTTPMatch (const char *filename) { |
| 861 | if (!strncmp(filename, "http://", 7)) |
| 862 | return(1); |
| 863 | return(0); |
| 864 | } |
| 865 | |
| 866 | /** |
| 867 | * xmlIOHTTPOpen: |
| 868 | * @filename: the URI for matching |
| 869 | * |
| 870 | * open an HTTP I/O channel |
| 871 | * |
| 872 | * Returns an I/O context or NULL in case of error |
| 873 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 874 | static void * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 875 | xmlIOHTTPOpen (const char *filename) { |
| 876 | return(xmlNanoHTTPOpen(filename, NULL)); |
| 877 | } |
| 878 | |
| 879 | /** |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 880 | * xmlIOHTTPOpenW |
| 881 | * @post_uri: The destination URI for the document |
| 882 | * @compression: The compression desired for the document. |
| 883 | * |
| 884 | * Open a temporary buffer to collect the document for a subsequent HTTP POST |
| 885 | * request. Non-static as is called from the output buffer creation routine. |
| 886 | * |
| 887 | * Returns an I/O context or NULL in case of error. |
| 888 | */ |
| 889 | |
| 890 | void * |
| 891 | xmlIOHTTPOpenW( const char * post_uri, int compression ) { |
| 892 | |
| 893 | xmlIOHTTPWriteCtxtPtr ctxt = NULL; |
| 894 | |
| 895 | if ( post_uri == NULL ) |
| 896 | return ( NULL ); |
| 897 | |
| 898 | ctxt = xmlMalloc( sizeof( xmlIOHTTPWriteCtxt ) ); |
| 899 | if ( ctxt == NULL ) { |
| 900 | xmlGenericError( xmlGenericErrorContext, |
| 901 | "xmlIOHTTPOpenW: Failed to create output HTTP context.\n" ); |
| 902 | return ( NULL ); |
| 903 | } |
| 904 | |
| 905 | (void)memset( ctxt, 0, sizeof( xmlIOHTTPWriteCtxt ) ); |
| 906 | |
| 907 | ctxt->uri = strdup( post_uri ); |
| 908 | if ( ctxt->uri == NULL ) { |
| 909 | xmlGenericError( xmlGenericErrorContext, |
| 910 | "xmlIOHTTPOpenW: Failed to duplicate destination URI.\n" ); |
| 911 | xmlFreeHTTPWriteCtxt( ctxt ); |
| 912 | return ( NULL ); |
| 913 | } |
| 914 | |
| 915 | /* |
| 916 | ** Since the document length is required for an HTTP post, |
| 917 | ** need to put the document into a buffer. A memory buffer |
| 918 | ** is being used to avoid pushing the data to disk and back. |
| 919 | */ |
| 920 | |
| 921 | #ifdef HAVE_ZLIB_H |
| 922 | if ( ( compression > 0 ) && ( compression <= 9 ) ) { |
| 923 | |
| 924 | ctxt->compression = compression; |
| 925 | ctxt->doc_buff = xmlCreateZMemBuff( compression ); |
| 926 | } |
| 927 | else |
| 928 | #endif |
| 929 | { |
| 930 | /* Any character conversions should have been done before this */ |
| 931 | |
| 932 | ctxt->doc_buff = xmlAllocOutputBuffer( NULL ); |
| 933 | } |
| 934 | |
| 935 | if ( ctxt->doc_buff == NULL ) { |
| 936 | xmlFreeHTTPWriteCtxt( ctxt ); |
| 937 | ctxt = NULL; |
| 938 | } |
| 939 | |
| 940 | return ( ctxt ); |
| 941 | } |
| 942 | |
| 943 | /** |
| 944 | * xmlIOHTTPDfltOpenW |
| 945 | * @post_uri: The destination URI for this document. |
| 946 | * |
| 947 | * Calls xmlIOHTTPOpenW with no compression to set up for a subsequent |
| 948 | * HTTP post command. This function should generally not be used as |
| 949 | * the open callback is short circuited in xmlOutputBufferCreateFile. |
| 950 | * |
| 951 | * Returns a pointer to the new IO context. |
| 952 | */ |
| 953 | static void * |
| 954 | xmlIOHTTPDfltOpenW( const char * post_uri ) { |
| 955 | return ( xmlIOHTTPOpenW( post_uri, 0 ) ); |
| 956 | } |
| 957 | |
| 958 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 959 | * xmlIOHTTPRead: |
| 960 | * @context: the I/O context |
| 961 | * @buffer: where to drop data |
| 962 | * @len: number of bytes to write |
| 963 | * |
| 964 | * Read @len bytes to @buffer from the I/O channel. |
| 965 | * |
| 966 | * Returns the number of bytes written |
| 967 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 968 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 969 | xmlIOHTTPRead(void * context, char * buffer, int len) { |
| 970 | return(xmlNanoHTTPRead(context, &buffer[0], len)); |
| 971 | } |
| 972 | |
| 973 | /** |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 974 | * xmlIOHTTPWrite |
| 975 | * @context: previously opened writing context |
| 976 | * @buffer: data to output to temporary buffer |
| 977 | * @len: bytes to output |
| 978 | * |
| 979 | * Collect data from memory buffer into a temporary file for later |
| 980 | * processing. |
| 981 | * |
| 982 | * Returns number of bytes written. |
| 983 | */ |
| 984 | |
| 985 | static int |
| 986 | xmlIOHTTPWrite( void * context, const char * buffer, int len ) { |
| 987 | |
| 988 | xmlIOHTTPWriteCtxtPtr ctxt = context; |
| 989 | |
| 990 | if ( ( ctxt == NULL ) || ( ctxt->doc_buff == NULL ) || ( buffer == NULL ) ) |
| 991 | return ( -1 ); |
| 992 | |
| 993 | if ( len > 0 ) { |
| 994 | |
| 995 | /* Use gzwrite or fwrite as previously setup in the open call */ |
| 996 | |
| 997 | #ifdef HAVE_ZLIB_H |
| 998 | if ( ctxt->compression > 0 ) |
| 999 | len = xmlZMemBuffAppend( ctxt->doc_buff, buffer, len ); |
| 1000 | |
| 1001 | else |
| 1002 | #endif |
| 1003 | len = xmlOutputBufferWrite( ctxt->doc_buff, len, buffer ); |
| 1004 | |
| 1005 | if ( len < 0 ) { |
| 1006 | xmlGenericError( xmlGenericErrorContext, |
| 1007 | "xmlIOHTTPWrite: %s\n%s '%s'.\n", |
| 1008 | "Error appending to internal buffer.", |
| 1009 | "Error sending document to URI", |
| 1010 | ctxt->uri ); |
| 1011 | } |
| 1012 | } |
| 1013 | |
| 1014 | return ( len ); |
| 1015 | } |
| 1016 | |
| 1017 | |
| 1018 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1019 | * xmlIOHTTPClose: |
| 1020 | * @context: the I/O context |
| 1021 | * |
| 1022 | * Close an HTTP I/O channel |
| 1023 | */ |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1024 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1025 | xmlIOHTTPClose (void * context) { |
| 1026 | xmlNanoHTTPClose(context); |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1027 | return 0; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1028 | } |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1029 | |
| 1030 | /** |
| 1031 | * xmlIOHTTCloseWrite |
| 1032 | * @context: The I/O context |
| 1033 | * @http_mthd: The HTTP method to be used when sending the data |
| 1034 | * |
| 1035 | * Close the transmit HTTP I/O channel and actually send the data. |
| 1036 | */ |
| 1037 | static int |
| 1038 | xmlIOHTTPCloseWrite( void * context, const char * http_mthd ) { |
| 1039 | |
| 1040 | int close_rc = -1; |
| 1041 | int http_rtn = 0; |
| 1042 | int content_lgth = 0; |
| 1043 | xmlIOHTTPWriteCtxtPtr ctxt = context; |
| 1044 | |
| 1045 | char * http_content = NULL; |
| 1046 | char * content_encoding = NULL; |
| 1047 | char * content_type = (char *) "text/xml"; |
| 1048 | void * http_ctxt = NULL; |
| 1049 | |
| 1050 | if ( ( ctxt == NULL ) || ( http_mthd == NULL ) ) |
| 1051 | return ( -1 ); |
| 1052 | |
| 1053 | /* Retrieve the content from the appropriate buffer */ |
| 1054 | |
| 1055 | #ifdef HAVE_ZLIB_H |
| 1056 | |
| 1057 | if ( ctxt->compression > 0 ) { |
| 1058 | content_lgth = xmlZMemBuffGetContent( ctxt->doc_buff, &http_content ); |
| 1059 | content_encoding = (char *) "Content-Encoding: gzip"; |
| 1060 | } |
| 1061 | else |
| 1062 | #endif |
| 1063 | { |
| 1064 | /* Pull the data out of the memory output buffer */ |
| 1065 | |
| 1066 | xmlOutputBufferPtr dctxt = ctxt->doc_buff; |
| 1067 | http_content = (char *)dctxt->buffer->content; |
| 1068 | content_lgth = dctxt->buffer->use; |
| 1069 | } |
| 1070 | |
| 1071 | if ( http_content == NULL ) { |
| 1072 | xmlGenericError( xmlGenericErrorContext, |
| 1073 | "xmlIOHTTPCloseWrite: %s '%s' %s '%s'.\n", |
| 1074 | "Error retrieving content.\nUnable to", |
| 1075 | http_mthd, "data to URI", ctxt->uri ); |
| 1076 | } |
| 1077 | |
| 1078 | else { |
| 1079 | |
| 1080 | http_ctxt = xmlNanoHTTPMethod( ctxt->uri, http_mthd, http_content, |
| 1081 | &content_type, content_encoding, |
| 1082 | content_lgth ); |
| 1083 | |
| 1084 | if ( http_ctxt != NULL ) { |
| 1085 | #ifdef DEBUG_HTTP |
| 1086 | /* If testing/debugging - dump reply with request content */ |
| 1087 | |
| 1088 | FILE * tst_file = NULL; |
| 1089 | char buffer[ 4096 ]; |
| 1090 | char * dump_name = NULL; |
| 1091 | int avail; |
| 1092 | |
| 1093 | xmlGenericError( xmlGenericErrorContext, |
| 1094 | "xmlNanoHTTPCloseWrite: HTTP %s to\n%s returned %d.\n", |
| 1095 | http_mthd, ctxt->uri, |
| 1096 | xmlNanoHTTPReturnCode( http_ctxt ) ); |
| 1097 | |
| 1098 | /* |
| 1099 | ** Since either content or reply may be gzipped, |
| 1100 | ** dump them to separate files instead of the |
| 1101 | ** standard error context. |
| 1102 | */ |
| 1103 | |
| 1104 | dump_name = tempnam( NULL, "lxml" ); |
| 1105 | if ( dump_name != NULL ) { |
| 1106 | (void)sprintf( buffer, "%s.content", dump_name ); |
| 1107 | |
| 1108 | tst_file = fopen( buffer, "w" ); |
| 1109 | if ( tst_file != NULL ) { |
| 1110 | xmlGenericError( xmlGenericErrorContext, |
| 1111 | "Transmitted content saved in file: %s\n", buffer ); |
| 1112 | |
| 1113 | fwrite( http_content, sizeof( char ), |
| 1114 | content_lgth, tst_file ); |
| 1115 | fclose( tst_file ); |
| 1116 | } |
| 1117 | |
| 1118 | (void)sprintf( buffer, "%s.reply", dump_name ); |
| 1119 | tst_file = fopen( buffer, "w" ); |
| 1120 | if ( tst_file != NULL ) { |
| 1121 | xmlGenericError( xmlGenericErrorContext, |
| 1122 | "Reply content saved in file: %s\n", buffer ); |
| 1123 | |
| 1124 | |
| 1125 | while ( (avail = xmlNanoHTTPRead( http_ctxt, |
| 1126 | buffer, sizeof( buffer ) )) > 0 ) { |
| 1127 | |
| 1128 | fwrite( buffer, sizeof( char ), avail, tst_file ); |
| 1129 | } |
| 1130 | |
| 1131 | fclose( tst_file ); |
| 1132 | } |
| 1133 | |
| 1134 | free( dump_name ); |
| 1135 | } |
| 1136 | #endif /* DEBUG_HTTP */ |
| 1137 | |
| 1138 | http_rtn = xmlNanoHTTPReturnCode( http_ctxt ); |
| 1139 | if ( ( http_rtn >= 200 ) && ( http_rtn < 300 ) ) |
| 1140 | close_rc = 0; |
| 1141 | else |
| 1142 | xmlGenericError( xmlGenericErrorContext, |
| 1143 | "xmlIOHTTPClose: HTTP '%s' of %d %s\n'%s' %s %d\n", |
| 1144 | http_mthd, content_lgth, |
| 1145 | "bytes to URI", ctxt->uri, |
| 1146 | "failed. HTTP return code:", http_rtn ); |
| 1147 | |
| 1148 | xmlNanoHTTPClose( http_ctxt ); |
| 1149 | xmlFree( content_type ); |
| 1150 | } |
| 1151 | } |
| 1152 | |
| 1153 | /* Final cleanups */ |
| 1154 | |
| 1155 | xmlFreeHTTPWriteCtxt( ctxt ); |
| 1156 | |
| 1157 | return ( close_rc ); |
| 1158 | } |
| 1159 | |
| 1160 | /** |
| 1161 | * xmlIOHTTPClosePut |
| 1162 | * |
| 1163 | * @context: The I/O context |
| 1164 | * |
| 1165 | * Close the transmit HTTP I/O channel and actually send data using a PUT |
| 1166 | * HTTP method. |
| 1167 | */ |
| 1168 | static int |
| 1169 | xmlIOHTTPClosePut( void * ctxt ) { |
| 1170 | return ( xmlIOHTTPCloseWrite( ctxt, "PUT" ) ); |
| 1171 | } |
| 1172 | |
| 1173 | |
| 1174 | /** |
| 1175 | * xmlIOHTTPClosePost |
| 1176 | * |
| 1177 | * @context: The I/O context |
| 1178 | * |
| 1179 | * Close the transmit HTTP I/O channel and actually send data using a POST |
| 1180 | * HTTP method. |
| 1181 | */ |
| 1182 | static int |
| 1183 | xmlIOHTTPClosePost( void * ctxt ) { |
| 1184 | return ( xmlIOHTTPCloseWrite( ctxt, "POST" ) ); |
| 1185 | } |
| 1186 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1187 | #endif /* LIBXML_HTTP_ENABLED */ |
| 1188 | |
| 1189 | #ifdef LIBXML_FTP_ENABLED |
| 1190 | /************************************************************************ |
| 1191 | * * |
| 1192 | * I/O for FTP file accesses * |
| 1193 | * * |
| 1194 | ************************************************************************/ |
| 1195 | /** |
| 1196 | * xmlIOFTPMatch: |
| 1197 | * @filename: the URI for matching |
| 1198 | * |
| 1199 | * check if the URI matches an FTP one |
| 1200 | * |
| 1201 | * Returns 1 if matches, 0 otherwise |
| 1202 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1203 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1204 | xmlIOFTPMatch (const char *filename) { |
| 1205 | if (!strncmp(filename, "ftp://", 6)) |
| 1206 | return(1); |
| 1207 | return(0); |
| 1208 | } |
| 1209 | |
| 1210 | /** |
| 1211 | * xmlIOFTPOpen: |
| 1212 | * @filename: the URI for matching |
| 1213 | * |
| 1214 | * open an FTP I/O channel |
| 1215 | * |
| 1216 | * Returns an I/O context or NULL in case of error |
| 1217 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1218 | static void * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1219 | xmlIOFTPOpen (const char *filename) { |
| 1220 | return(xmlNanoFTPOpen(filename)); |
| 1221 | } |
| 1222 | |
| 1223 | /** |
| 1224 | * xmlIOFTPRead: |
| 1225 | * @context: the I/O context |
| 1226 | * @buffer: where to drop data |
| 1227 | * @len: number of bytes to write |
| 1228 | * |
| 1229 | * Read @len bytes to @buffer from the I/O channel. |
| 1230 | * |
| 1231 | * Returns the number of bytes written |
| 1232 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1233 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1234 | xmlIOFTPRead(void * context, char * buffer, int len) { |
| 1235 | return(xmlNanoFTPRead(context, &buffer[0], len)); |
| 1236 | } |
| 1237 | |
| 1238 | /** |
| 1239 | * xmlIOFTPClose: |
| 1240 | * @context: the I/O context |
| 1241 | * |
| 1242 | * Close an FTP I/O channel |
| 1243 | */ |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1244 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1245 | xmlIOFTPClose (void * context) { |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1246 | return ( xmlNanoFTPClose(context) ); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1247 | } |
| 1248 | #endif /* LIBXML_FTP_ENABLED */ |
| 1249 | |
| 1250 | |
| 1251 | /** |
| 1252 | * xmlRegisterInputCallbacks: |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1253 | * @matchFunc: the xmlInputMatchCallback |
| 1254 | * @openFunc: the xmlInputOpenCallback |
| 1255 | * @readFunc: the xmlInputReadCallback |
| 1256 | * @closeFunc: the xmlInputCloseCallback |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1257 | * |
| 1258 | * Register a new set of I/O callback for handling parser input. |
| 1259 | * |
| 1260 | * Returns the registered handler number or -1 in case of error |
| 1261 | */ |
| 1262 | int |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1263 | xmlRegisterInputCallbacks(xmlInputMatchCallback matchFunc, |
| 1264 | xmlInputOpenCallback openFunc, xmlInputReadCallback readFunc, |
| 1265 | xmlInputCloseCallback closeFunc) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1266 | if (xmlInputCallbackNr >= MAX_INPUT_CALLBACK) { |
| 1267 | return(-1); |
| 1268 | } |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1269 | xmlInputCallbackTable[xmlInputCallbackNr].matchcallback = matchFunc; |
| 1270 | xmlInputCallbackTable[xmlInputCallbackNr].opencallback = openFunc; |
| 1271 | xmlInputCallbackTable[xmlInputCallbackNr].readcallback = readFunc; |
| 1272 | xmlInputCallbackTable[xmlInputCallbackNr].closecallback = closeFunc; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1273 | return(xmlInputCallbackNr++); |
| 1274 | } |
| 1275 | |
| 1276 | /** |
| 1277 | * xmlRegisterOutputCallbacks: |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1278 | * @matchFunc: the xmlOutputMatchCallback |
| 1279 | * @openFunc: the xmlOutputOpenCallback |
| 1280 | * @writeFunc: the xmlOutputWriteCallback |
| 1281 | * @closeFunc: the xmlOutputCloseCallback |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1282 | * |
| 1283 | * Register a new set of I/O callback for handling output. |
| 1284 | * |
| 1285 | * Returns the registered handler number or -1 in case of error |
| 1286 | */ |
| 1287 | int |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1288 | xmlRegisterOutputCallbacks(xmlOutputMatchCallback matchFunc, |
| 1289 | xmlOutputOpenCallback openFunc, xmlOutputWriteCallback writeFunc, |
| 1290 | xmlOutputCloseCallback closeFunc) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1291 | if (xmlOutputCallbackNr >= MAX_INPUT_CALLBACK) { |
| 1292 | return(-1); |
| 1293 | } |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1294 | xmlOutputCallbackTable[xmlOutputCallbackNr].matchcallback = matchFunc; |
| 1295 | xmlOutputCallbackTable[xmlOutputCallbackNr].opencallback = openFunc; |
| 1296 | xmlOutputCallbackTable[xmlOutputCallbackNr].writecallback = writeFunc; |
| 1297 | xmlOutputCallbackTable[xmlOutputCallbackNr].closecallback = closeFunc; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1298 | return(xmlOutputCallbackNr++); |
| 1299 | } |
| 1300 | |
| 1301 | /** |
| 1302 | * xmlRegisterDefaultInputCallbacks: |
| 1303 | * |
| 1304 | * Registers the default compiled-in I/O handlers. |
| 1305 | */ |
| 1306 | void |
| 1307 | #ifdef VMS |
| 1308 | xmlRegisterDefInputCallbacks |
| 1309 | #else |
| 1310 | xmlRegisterDefaultInputCallbacks |
| 1311 | #endif |
| 1312 | (void) { |
| 1313 | if (xmlInputCallbackInitialized) |
| 1314 | return; |
| 1315 | |
| 1316 | xmlRegisterInputCallbacks(xmlFileMatch, xmlFileOpen, |
| 1317 | xmlFileRead, xmlFileClose); |
| 1318 | #ifdef HAVE_ZLIB_H |
| 1319 | xmlRegisterInputCallbacks(xmlGzfileMatch, xmlGzfileOpen, |
| 1320 | xmlGzfileRead, xmlGzfileClose); |
| 1321 | #endif /* HAVE_ZLIB_H */ |
| 1322 | |
| 1323 | #ifdef LIBXML_HTTP_ENABLED |
| 1324 | xmlRegisterInputCallbacks(xmlIOHTTPMatch, xmlIOHTTPOpen, |
| 1325 | xmlIOHTTPRead, xmlIOHTTPClose); |
| 1326 | #endif /* LIBXML_HTTP_ENABLED */ |
| 1327 | |
| 1328 | #ifdef LIBXML_FTP_ENABLED |
| 1329 | xmlRegisterInputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, |
| 1330 | xmlIOFTPRead, xmlIOFTPClose); |
| 1331 | #endif /* LIBXML_FTP_ENABLED */ |
| 1332 | xmlInputCallbackInitialized = 1; |
| 1333 | } |
| 1334 | |
| 1335 | /** |
| 1336 | * xmlRegisterDefaultOutputCallbacks: |
| 1337 | * |
| 1338 | * Registers the default compiled-in I/O handlers. |
| 1339 | */ |
| 1340 | void |
| 1341 | #ifdef VMS |
| 1342 | xmlRegisterDefOutputCallbacks |
| 1343 | #else |
| 1344 | xmlRegisterDefaultOutputCallbacks |
| 1345 | #endif |
| 1346 | (void) { |
| 1347 | if (xmlOutputCallbackInitialized) |
| 1348 | return; |
| 1349 | |
| 1350 | xmlRegisterOutputCallbacks(xmlFileMatch, xmlFileOpenW, |
| 1351 | xmlFileWrite, xmlFileClose); |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1352 | |
| 1353 | #ifdef LIBXML_HTTP_ENABLED |
| 1354 | xmlRegisterOutputCallbacks(xmlIOHTTPMatch, xmlIOHTTPDfltOpenW, |
| 1355 | xmlIOHTTPWrite, xmlIOHTTPClosePut); |
| 1356 | #endif |
| 1357 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1358 | /********************************* |
| 1359 | No way a-priori to distinguish between gzipped files from |
| 1360 | uncompressed ones except opening if existing then closing |
| 1361 | and saving with same compression ratio ... a pain. |
| 1362 | |
| 1363 | #ifdef HAVE_ZLIB_H |
| 1364 | xmlRegisterOutputCallbacks(xmlGzfileMatch, xmlGzfileOpen, |
| 1365 | xmlGzfileWrite, xmlGzfileClose); |
| 1366 | #endif |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1367 | |
| 1368 | Nor FTP PUT .... |
| 1369 | #ifdef LIBXML_FTP_ENABLED |
| 1370 | xmlRegisterOutputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, |
| 1371 | xmlIOFTPWrite, xmlIOFTPClose); |
| 1372 | #endif |
| 1373 | **********************************/ |
| 1374 | xmlOutputCallbackInitialized = 1; |
| 1375 | } |
| 1376 | |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1377 | #ifdef LIBXML_HTTP_ENABLED |
| 1378 | /** |
| 1379 | * xmlRegisterHTTPPostCallbacks |
| 1380 | * |
| 1381 | * By default, libxml submits HTTP output requests using the "PUT" method. |
| 1382 | * Calling this method changes the HTTP output method to use the "POST" |
| 1383 | * method instead. |
| 1384 | * |
| 1385 | */ |
| 1386 | void |
| 1387 | xmlRegisterHTTPPostCallbacks( void ) { |
| 1388 | |
| 1389 | /* Register defaults if not done previously */ |
| 1390 | |
| 1391 | if ( xmlOutputCallbackInitialized == 0 ) |
| 1392 | xmlRegisterDefaultOutputCallbacks( ); |
| 1393 | |
| 1394 | xmlRegisterOutputCallbacks(xmlIOHTTPMatch, xmlIOHTTPDfltOpenW, |
| 1395 | xmlIOHTTPWrite, xmlIOHTTPClosePost); |
| 1396 | return; |
| 1397 | } |
| 1398 | #endif |
| 1399 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1400 | /** |
| 1401 | * xmlAllocParserInputBuffer: |
| 1402 | * @enc: the charset encoding if known |
| 1403 | * |
| 1404 | * Create a buffered parser input for progressive parsing |
| 1405 | * |
| 1406 | * Returns the new parser input or NULL |
| 1407 | */ |
| 1408 | xmlParserInputBufferPtr |
| 1409 | xmlAllocParserInputBuffer(xmlCharEncoding enc) { |
| 1410 | xmlParserInputBufferPtr ret; |
| 1411 | |
| 1412 | ret = (xmlParserInputBufferPtr) xmlMalloc(sizeof(xmlParserInputBuffer)); |
| 1413 | if (ret == NULL) { |
| 1414 | xmlGenericError(xmlGenericErrorContext, |
| 1415 | "xmlAllocParserInputBuffer : out of memory!\n"); |
| 1416 | return(NULL); |
| 1417 | } |
| 1418 | memset(ret, 0, (size_t) sizeof(xmlParserInputBuffer)); |
| 1419 | ret->buffer = xmlBufferCreate(); |
| 1420 | if (ret->buffer == NULL) { |
| 1421 | xmlFree(ret); |
| 1422 | return(NULL); |
| 1423 | } |
| 1424 | ret->buffer->alloc = XML_BUFFER_ALLOC_DOUBLEIT; |
| 1425 | ret->encoder = xmlGetCharEncodingHandler(enc); |
| 1426 | if (ret->encoder != NULL) |
| 1427 | ret->raw = xmlBufferCreate(); |
| 1428 | else |
| 1429 | ret->raw = NULL; |
| 1430 | ret->readcallback = NULL; |
| 1431 | ret->closecallback = NULL; |
| 1432 | ret->context = NULL; |
| 1433 | |
| 1434 | return(ret); |
| 1435 | } |
| 1436 | |
| 1437 | /** |
| 1438 | * xmlAllocOutputBuffer: |
| 1439 | * @encoder: the encoding converter or NULL |
| 1440 | * |
| 1441 | * Create a buffered parser output |
| 1442 | * |
| 1443 | * Returns the new parser output or NULL |
| 1444 | */ |
| 1445 | xmlOutputBufferPtr |
| 1446 | xmlAllocOutputBuffer(xmlCharEncodingHandlerPtr encoder) { |
| 1447 | xmlOutputBufferPtr ret; |
| 1448 | |
| 1449 | ret = (xmlOutputBufferPtr) xmlMalloc(sizeof(xmlOutputBuffer)); |
| 1450 | if (ret == NULL) { |
| 1451 | xmlGenericError(xmlGenericErrorContext, |
| 1452 | "xmlAllocOutputBuffer : out of memory!\n"); |
| 1453 | return(NULL); |
| 1454 | } |
| 1455 | memset(ret, 0, (size_t) sizeof(xmlOutputBuffer)); |
| 1456 | ret->buffer = xmlBufferCreate(); |
| 1457 | if (ret->buffer == NULL) { |
| 1458 | xmlFree(ret); |
| 1459 | return(NULL); |
| 1460 | } |
| 1461 | ret->buffer->alloc = XML_BUFFER_ALLOC_DOUBLEIT; |
| 1462 | ret->encoder = encoder; |
| 1463 | if (encoder != NULL) { |
| 1464 | ret->conv = xmlBufferCreateSize(4000); |
| 1465 | /* |
| 1466 | * This call is designed to initiate the encoder state |
| 1467 | */ |
| 1468 | xmlCharEncOutFunc(encoder, ret->conv, NULL); |
| 1469 | } else |
| 1470 | ret->conv = NULL; |
| 1471 | ret->writecallback = NULL; |
| 1472 | ret->closecallback = NULL; |
| 1473 | ret->context = NULL; |
| 1474 | ret->written = 0; |
| 1475 | |
| 1476 | return(ret); |
| 1477 | } |
| 1478 | |
| 1479 | /** |
| 1480 | * xmlFreeParserInputBuffer: |
| 1481 | * @in: a buffered parser input |
| 1482 | * |
| 1483 | * Free up the memory used by a buffered parser input |
| 1484 | */ |
| 1485 | void |
| 1486 | xmlFreeParserInputBuffer(xmlParserInputBufferPtr in) { |
| 1487 | if (in->raw) { |
| 1488 | xmlBufferFree(in->raw); |
| 1489 | in->raw = NULL; |
| 1490 | } |
| 1491 | if (in->encoder != NULL) { |
| 1492 | xmlCharEncCloseFunc(in->encoder); |
| 1493 | } |
| 1494 | if (in->closecallback != NULL) { |
| 1495 | in->closecallback(in->context); |
| 1496 | } |
| 1497 | if (in->buffer != NULL) { |
| 1498 | xmlBufferFree(in->buffer); |
| 1499 | in->buffer = NULL; |
| 1500 | } |
| 1501 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1502 | xmlFree(in); |
| 1503 | } |
| 1504 | |
| 1505 | /** |
| 1506 | * xmlOutputBufferClose: |
| 1507 | * @out: a buffered output |
| 1508 | * |
| 1509 | * flushes and close the output I/O channel |
| 1510 | * and free up all the associated resources |
| 1511 | * |
| 1512 | * Returns the number of byte written or -1 in case of error. |
| 1513 | */ |
| 1514 | int |
| 1515 | xmlOutputBufferClose(xmlOutputBufferPtr out) { |
| 1516 | int written; |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1517 | int err_rc = 0; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1518 | |
| 1519 | if (out == NULL) |
| 1520 | return(-1); |
| 1521 | if (out->writecallback != NULL) |
| 1522 | xmlOutputBufferFlush(out); |
| 1523 | if (out->closecallback != NULL) { |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1524 | err_rc = out->closecallback(out->context); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1525 | } |
| 1526 | written = out->written; |
| 1527 | if (out->conv) { |
| 1528 | xmlBufferFree(out->conv); |
| 1529 | out->conv = NULL; |
| 1530 | } |
| 1531 | if (out->encoder != NULL) { |
| 1532 | xmlCharEncCloseFunc(out->encoder); |
| 1533 | } |
| 1534 | if (out->buffer != NULL) { |
| 1535 | xmlBufferFree(out->buffer); |
| 1536 | out->buffer = NULL; |
| 1537 | } |
| 1538 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1539 | xmlFree(out); |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1540 | return( ( err_rc == 0 ) ? written : err_rc ); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1541 | } |
| 1542 | |
| 1543 | /** |
Daniel Veillard | 5e2dace | 2001-07-18 19:30:27 +0000 | [diff] [blame] | 1544 | * xmlParserInputBufferCreateFname: |
| 1545 | * @URI: a C string containing the URI or filename |
| 1546 | * @enc: the charset encoding if known |
| 1547 | * |
| 1548 | * VMS version of xmlParserInputBufferCreateFilename() |
| 1549 | * |
| 1550 | * Returns the new parser input or NULL |
| 1551 | */ |
| 1552 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1553 | * xmlParserInputBufferCreateFilename: |
| 1554 | * @URI: a C string containing the URI or filename |
| 1555 | * @enc: the charset encoding if known |
| 1556 | * |
| 1557 | * Create a buffered parser input for the progressive parsing of a file |
| 1558 | * If filename is "-' then we use stdin as the input. |
| 1559 | * Automatic support for ZLIB/Compress compressed document is provided |
| 1560 | * by default if found at compile-time. |
| 1561 | * Do an encoding check if enc == XML_CHAR_ENCODING_NONE |
| 1562 | * |
| 1563 | * Returns the new parser input or NULL |
| 1564 | */ |
| 1565 | xmlParserInputBufferPtr |
| 1566 | #ifdef VMS |
| 1567 | xmlParserInputBufferCreateFname |
| 1568 | #else |
| 1569 | xmlParserInputBufferCreateFilename |
| 1570 | #endif |
| 1571 | (const char *URI, xmlCharEncoding enc) { |
| 1572 | xmlParserInputBufferPtr ret; |
Daniel Veillard | 388236f | 2001-07-08 18:35:48 +0000 | [diff] [blame] | 1573 | int i = 0; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1574 | void *context = NULL; |
Daniel Veillard | 388236f | 2001-07-08 18:35:48 +0000 | [diff] [blame] | 1575 | char *unescaped; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1576 | |
| 1577 | if (xmlInputCallbackInitialized == 0) |
| 1578 | xmlRegisterDefaultInputCallbacks(); |
| 1579 | |
| 1580 | if (URI == NULL) return(NULL); |
| 1581 | |
| 1582 | /* |
| 1583 | * Try to find one of the input accept method accepting taht scheme |
| 1584 | * Go in reverse to give precedence to user defined handlers. |
Daniel Veillard | 388236f | 2001-07-08 18:35:48 +0000 | [diff] [blame] | 1585 | * try with an unescaped version of the URI |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1586 | */ |
Daniel Veillard | 388236f | 2001-07-08 18:35:48 +0000 | [diff] [blame] | 1587 | unescaped = xmlURIUnescapeString(URI, 0, NULL); |
| 1588 | if (unescaped != NULL) { |
| 1589 | for (i = xmlInputCallbackNr - 1;i >= 0;i--) { |
| 1590 | if ((xmlInputCallbackTable[i].matchcallback != NULL) && |
| 1591 | (xmlInputCallbackTable[i].matchcallback(unescaped) != 0)) { |
| 1592 | context = xmlInputCallbackTable[i].opencallback(unescaped); |
| 1593 | if (context != NULL) |
| 1594 | break; |
| 1595 | } |
| 1596 | } |
| 1597 | xmlFree(unescaped); |
| 1598 | } |
| 1599 | |
| 1600 | /* |
| 1601 | * If this failed try with a non-escaped URI this may be a strange |
| 1602 | * filename |
| 1603 | */ |
| 1604 | if (context == NULL) { |
| 1605 | for (i = xmlInputCallbackNr - 1;i >= 0;i--) { |
| 1606 | if ((xmlInputCallbackTable[i].matchcallback != NULL) && |
| 1607 | (xmlInputCallbackTable[i].matchcallback(URI) != 0)) { |
| 1608 | context = xmlInputCallbackTable[i].opencallback(URI); |
| 1609 | if (context != NULL) |
| 1610 | break; |
| 1611 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1612 | } |
| 1613 | } |
| 1614 | if (context == NULL) { |
| 1615 | return(NULL); |
| 1616 | } |
| 1617 | |
| 1618 | /* |
| 1619 | * Allocate the Input buffer front-end. |
| 1620 | */ |
| 1621 | ret = xmlAllocParserInputBuffer(enc); |
| 1622 | if (ret != NULL) { |
| 1623 | ret->context = context; |
| 1624 | ret->readcallback = xmlInputCallbackTable[i].readcallback; |
| 1625 | ret->closecallback = xmlInputCallbackTable[i].closecallback; |
| 1626 | } |
| 1627 | return(ret); |
| 1628 | } |
| 1629 | |
| 1630 | /** |
| 1631 | * xmlOutputBufferCreateFilename: |
| 1632 | * @URI: a C string containing the URI or filename |
| 1633 | * @encoder: the encoding converter or NULL |
| 1634 | * @compression: the compression ration (0 none, 9 max). |
| 1635 | * |
| 1636 | * Create a buffered output for the progressive saving of a file |
| 1637 | * If filename is "-' then we use stdout as the output. |
| 1638 | * Automatic support for ZLIB/Compress compressed document is provided |
| 1639 | * by default if found at compile-time. |
| 1640 | * TODO: currently if compression is set, the library only support |
| 1641 | * writing to a local file. |
| 1642 | * |
| 1643 | * Returns the new output or NULL |
| 1644 | */ |
| 1645 | xmlOutputBufferPtr |
| 1646 | xmlOutputBufferCreateFilename(const char *URI, |
| 1647 | xmlCharEncodingHandlerPtr encoder, |
| 1648 | int compression) { |
| 1649 | xmlOutputBufferPtr ret; |
| 1650 | int i; |
| 1651 | void *context = NULL; |
| 1652 | |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1653 | int is_http_uri = 0; /* Can't change if HTTP disabled */ |
| 1654 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1655 | if (xmlOutputCallbackInitialized == 0) |
| 1656 | xmlRegisterDefaultOutputCallbacks(); |
| 1657 | |
| 1658 | if (URI == NULL) return(NULL); |
| 1659 | |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1660 | #ifdef LIBXML_HTTP_ENABLED |
| 1661 | /* Need to prevent HTTP URI's from falling into zlib short circuit */ |
| 1662 | |
| 1663 | is_http_uri = xmlIOHTTPMatch( URI ); |
| 1664 | #endif |
| 1665 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1666 | #ifdef HAVE_ZLIB_H |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1667 | if ((compression > 0) && (compression <= 9) && (is_http_uri == 0)) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1668 | context = xmlGzfileOpenW(URI, compression); |
| 1669 | if (context != NULL) { |
| 1670 | ret = xmlAllocOutputBuffer(encoder); |
| 1671 | if (ret != NULL) { |
| 1672 | ret->context = context; |
| 1673 | ret->writecallback = xmlGzfileWrite; |
| 1674 | ret->closecallback = xmlGzfileClose; |
| 1675 | } |
| 1676 | return(ret); |
| 1677 | } |
| 1678 | } |
| 1679 | #endif |
| 1680 | |
| 1681 | /* |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1682 | * Try to find one of the output accept method accepting that scheme |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1683 | * Go in reverse to give precedence to user defined handlers. |
| 1684 | */ |
| 1685 | for (i = xmlOutputCallbackNr - 1;i >= 0;i--) { |
| 1686 | if ((xmlOutputCallbackTable[i].matchcallback != NULL) && |
| 1687 | (xmlOutputCallbackTable[i].matchcallback(URI) != 0)) { |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1688 | |
| 1689 | #if ( defined( LIBXML_HTTP_ENABLED ) && defined( HAVE_ZLIB_H ) ) |
| 1690 | /* Need to pass compression parameter into HTTP open calls */ |
| 1691 | |
| 1692 | if ( xmlOutputCallbackTable[i].matchcallback == xmlIOHTTPMatch ) |
| 1693 | context = xmlIOHTTPOpenW( URI, compression ); |
| 1694 | else |
| 1695 | #endif |
| 1696 | context = xmlOutputCallbackTable[i].opencallback(URI); |
| 1697 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1698 | if (context != NULL) |
| 1699 | break; |
| 1700 | } |
| 1701 | } |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 1702 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1703 | if (context == NULL) { |
| 1704 | return(NULL); |
| 1705 | } |
| 1706 | |
| 1707 | /* |
| 1708 | * Allocate the Output buffer front-end. |
| 1709 | */ |
| 1710 | ret = xmlAllocOutputBuffer(encoder); |
| 1711 | if (ret != NULL) { |
| 1712 | ret->context = context; |
| 1713 | ret->writecallback = xmlOutputCallbackTable[i].writecallback; |
| 1714 | ret->closecallback = xmlOutputCallbackTable[i].closecallback; |
| 1715 | } |
| 1716 | return(ret); |
| 1717 | } |
| 1718 | |
| 1719 | /** |
| 1720 | * xmlParserInputBufferCreateFile: |
| 1721 | * @file: a FILE* |
| 1722 | * @enc: the charset encoding if known |
| 1723 | * |
| 1724 | * Create a buffered parser input for the progressive parsing of a FILE * |
| 1725 | * buffered C I/O |
| 1726 | * |
| 1727 | * Returns the new parser input or NULL |
| 1728 | */ |
| 1729 | xmlParserInputBufferPtr |
| 1730 | xmlParserInputBufferCreateFile(FILE *file, xmlCharEncoding enc) { |
| 1731 | xmlParserInputBufferPtr ret; |
| 1732 | |
| 1733 | if (xmlInputCallbackInitialized == 0) |
| 1734 | xmlRegisterDefaultInputCallbacks(); |
| 1735 | |
| 1736 | if (file == NULL) return(NULL); |
| 1737 | |
| 1738 | ret = xmlAllocParserInputBuffer(enc); |
| 1739 | if (ret != NULL) { |
| 1740 | ret->context = file; |
| 1741 | ret->readcallback = xmlFileRead; |
| 1742 | ret->closecallback = xmlFileFlush; |
| 1743 | } |
| 1744 | |
| 1745 | return(ret); |
| 1746 | } |
| 1747 | |
| 1748 | /** |
| 1749 | * xmlOutputBufferCreateFile: |
| 1750 | * @file: a FILE* |
| 1751 | * @encoder: the encoding converter or NULL |
| 1752 | * |
| 1753 | * Create a buffered output for the progressive saving to a FILE * |
| 1754 | * buffered C I/O |
| 1755 | * |
| 1756 | * Returns the new parser output or NULL |
| 1757 | */ |
| 1758 | xmlOutputBufferPtr |
| 1759 | xmlOutputBufferCreateFile(FILE *file, xmlCharEncodingHandlerPtr encoder) { |
| 1760 | xmlOutputBufferPtr ret; |
| 1761 | |
| 1762 | if (xmlOutputCallbackInitialized == 0) |
| 1763 | xmlRegisterDefaultOutputCallbacks(); |
| 1764 | |
| 1765 | if (file == NULL) return(NULL); |
| 1766 | |
| 1767 | ret = xmlAllocOutputBuffer(encoder); |
| 1768 | if (ret != NULL) { |
| 1769 | ret->context = file; |
| 1770 | ret->writecallback = xmlFileWrite; |
| 1771 | ret->closecallback = xmlFileFlush; |
| 1772 | } |
| 1773 | |
| 1774 | return(ret); |
| 1775 | } |
| 1776 | |
| 1777 | /** |
| 1778 | * xmlParserInputBufferCreateFd: |
| 1779 | * @fd: a file descriptor number |
| 1780 | * @enc: the charset encoding if known |
| 1781 | * |
| 1782 | * Create a buffered parser input for the progressive parsing for the input |
| 1783 | * from a file descriptor |
| 1784 | * |
| 1785 | * Returns the new parser input or NULL |
| 1786 | */ |
| 1787 | xmlParserInputBufferPtr |
| 1788 | xmlParserInputBufferCreateFd(int fd, xmlCharEncoding enc) { |
| 1789 | xmlParserInputBufferPtr ret; |
| 1790 | |
| 1791 | if (fd < 0) return(NULL); |
| 1792 | |
| 1793 | ret = xmlAllocParserInputBuffer(enc); |
| 1794 | if (ret != NULL) { |
Daniel Veillard | 8fcc494 | 2001-07-17 20:07:33 +0000 | [diff] [blame] | 1795 | ret->context = (void *) (long) fd; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1796 | ret->readcallback = xmlFdRead; |
| 1797 | ret->closecallback = xmlFdClose; |
| 1798 | } |
| 1799 | |
| 1800 | return(ret); |
| 1801 | } |
| 1802 | |
| 1803 | /** |
| 1804 | * xmlParserInputBufferCreateMem: |
| 1805 | * @mem: the memory input |
| 1806 | * @size: the length of the memory block |
| 1807 | * @enc: the charset encoding if known |
| 1808 | * |
| 1809 | * Create a buffered parser input for the progressive parsing for the input |
| 1810 | * from a memory area. |
| 1811 | * |
| 1812 | * Returns the new parser input or NULL |
| 1813 | */ |
| 1814 | xmlParserInputBufferPtr |
| 1815 | xmlParserInputBufferCreateMem(const char *mem, int size, xmlCharEncoding enc) { |
| 1816 | xmlParserInputBufferPtr ret; |
| 1817 | |
| 1818 | if (size <= 0) return(NULL); |
| 1819 | if (mem == NULL) return(NULL); |
| 1820 | |
| 1821 | ret = xmlAllocParserInputBuffer(enc); |
| 1822 | if (ret != NULL) { |
| 1823 | ret->context = (void *) mem; |
| 1824 | ret->readcallback = (xmlInputReadCallback) xmlNop; |
| 1825 | ret->closecallback = NULL; |
| 1826 | xmlBufferAdd(ret->buffer, (const xmlChar *) mem, size); |
| 1827 | } |
| 1828 | |
| 1829 | return(ret); |
| 1830 | } |
| 1831 | |
| 1832 | /** |
| 1833 | * xmlOutputBufferCreateFd: |
| 1834 | * @fd: a file descriptor number |
| 1835 | * @encoder: the encoding converter or NULL |
| 1836 | * |
| 1837 | * Create a buffered output for the progressive saving |
| 1838 | * to a file descriptor |
| 1839 | * |
| 1840 | * Returns the new parser output or NULL |
| 1841 | */ |
| 1842 | xmlOutputBufferPtr |
| 1843 | xmlOutputBufferCreateFd(int fd, xmlCharEncodingHandlerPtr encoder) { |
| 1844 | xmlOutputBufferPtr ret; |
| 1845 | |
| 1846 | if (fd < 0) return(NULL); |
| 1847 | |
| 1848 | ret = xmlAllocOutputBuffer(encoder); |
| 1849 | if (ret != NULL) { |
Daniel Veillard | 8fcc494 | 2001-07-17 20:07:33 +0000 | [diff] [blame] | 1850 | ret->context = (void *) (long) fd; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1851 | ret->writecallback = xmlFdWrite; |
| 1852 | ret->closecallback = xmlFdClose; |
| 1853 | } |
| 1854 | |
| 1855 | return(ret); |
| 1856 | } |
| 1857 | |
| 1858 | /** |
| 1859 | * xmlParserInputBufferCreateIO: |
| 1860 | * @ioread: an I/O read function |
| 1861 | * @ioclose: an I/O close function |
| 1862 | * @ioctx: an I/O handler |
| 1863 | * @enc: the charset encoding if known |
| 1864 | * |
| 1865 | * Create a buffered parser input for the progressive parsing for the input |
| 1866 | * from an I/O handler |
| 1867 | * |
| 1868 | * Returns the new parser input or NULL |
| 1869 | */ |
| 1870 | xmlParserInputBufferPtr |
| 1871 | xmlParserInputBufferCreateIO(xmlInputReadCallback ioread, |
| 1872 | xmlInputCloseCallback ioclose, void *ioctx, xmlCharEncoding enc) { |
| 1873 | xmlParserInputBufferPtr ret; |
| 1874 | |
| 1875 | if (ioread == NULL) return(NULL); |
| 1876 | |
| 1877 | ret = xmlAllocParserInputBuffer(enc); |
| 1878 | if (ret != NULL) { |
| 1879 | ret->context = (void *) ioctx; |
| 1880 | ret->readcallback = ioread; |
| 1881 | ret->closecallback = ioclose; |
| 1882 | } |
| 1883 | |
| 1884 | return(ret); |
| 1885 | } |
| 1886 | |
| 1887 | /** |
| 1888 | * xmlOutputBufferCreateIO: |
| 1889 | * @iowrite: an I/O write function |
| 1890 | * @ioclose: an I/O close function |
| 1891 | * @ioctx: an I/O handler |
| 1892 | * @enc: the charset encoding if known |
| 1893 | * |
| 1894 | * Create a buffered output for the progressive saving |
| 1895 | * to an I/O handler |
| 1896 | * |
| 1897 | * Returns the new parser output or NULL |
| 1898 | */ |
| 1899 | xmlOutputBufferPtr |
| 1900 | xmlOutputBufferCreateIO(xmlOutputWriteCallback iowrite, |
| 1901 | xmlOutputCloseCallback ioclose, void *ioctx, |
| 1902 | xmlCharEncodingHandlerPtr encoder) { |
| 1903 | xmlOutputBufferPtr ret; |
| 1904 | |
| 1905 | if (iowrite == NULL) return(NULL); |
| 1906 | |
| 1907 | ret = xmlAllocOutputBuffer(encoder); |
| 1908 | if (ret != NULL) { |
| 1909 | ret->context = (void *) ioctx; |
| 1910 | ret->writecallback = iowrite; |
| 1911 | ret->closecallback = ioclose; |
| 1912 | } |
| 1913 | |
| 1914 | return(ret); |
| 1915 | } |
| 1916 | |
| 1917 | /** |
| 1918 | * xmlParserInputBufferPush: |
| 1919 | * @in: a buffered parser input |
| 1920 | * @len: the size in bytes of the array. |
| 1921 | * @buf: an char array |
| 1922 | * |
| 1923 | * Push the content of the arry in the input buffer |
| 1924 | * This routine handle the I18N transcoding to internal UTF-8 |
| 1925 | * This is used when operating the parser in progressive (push) mode. |
| 1926 | * |
| 1927 | * Returns the number of chars read and stored in the buffer, or -1 |
| 1928 | * in case of error. |
| 1929 | */ |
| 1930 | int |
| 1931 | xmlParserInputBufferPush(xmlParserInputBufferPtr in, |
| 1932 | int len, const char *buf) { |
| 1933 | int nbchars = 0; |
| 1934 | |
| 1935 | if (len < 0) return(0); |
| 1936 | if (in->encoder != NULL) { |
| 1937 | /* |
| 1938 | * Store the data in the incoming raw buffer |
| 1939 | */ |
| 1940 | if (in->raw == NULL) { |
| 1941 | in->raw = xmlBufferCreate(); |
| 1942 | } |
| 1943 | xmlBufferAdd(in->raw, (const xmlChar *) buf, len); |
| 1944 | |
| 1945 | /* |
| 1946 | * convert as much as possible to the parser reading buffer. |
| 1947 | */ |
| 1948 | nbchars = xmlCharEncInFunc(in->encoder, in->buffer, in->raw); |
| 1949 | if (nbchars < 0) { |
| 1950 | xmlGenericError(xmlGenericErrorContext, |
| 1951 | "xmlParserInputBufferPush: encoder error\n"); |
| 1952 | return(-1); |
| 1953 | } |
| 1954 | } else { |
| 1955 | nbchars = len; |
| 1956 | xmlBufferAdd(in->buffer, (xmlChar *) buf, nbchars); |
| 1957 | } |
| 1958 | #ifdef DEBUG_INPUT |
| 1959 | xmlGenericError(xmlGenericErrorContext, |
| 1960 | "I/O: pushed %d chars, buffer %d/%d\n", |
| 1961 | nbchars, in->buffer->use, in->buffer->size); |
| 1962 | #endif |
| 1963 | return(nbchars); |
| 1964 | } |
| 1965 | |
| 1966 | /** |
| 1967 | * xmlParserInputBufferGrow: |
| 1968 | * @in: a buffered parser input |
| 1969 | * @len: indicative value of the amount of chars to read |
| 1970 | * |
| 1971 | * Grow up the content of the input buffer, the old data are preserved |
| 1972 | * This routine handle the I18N transcoding to internal UTF-8 |
| 1973 | * This routine is used when operating the parser in normal (pull) mode |
| 1974 | * |
| 1975 | * TODO: one should be able to remove one extra copy by copying directy |
| 1976 | * onto in->buffer or in->raw |
| 1977 | * |
| 1978 | * Returns the number of chars read and stored in the buffer, or -1 |
| 1979 | * in case of error. |
| 1980 | */ |
| 1981 | int |
| 1982 | xmlParserInputBufferGrow(xmlParserInputBufferPtr in, int len) { |
| 1983 | char *buffer = NULL; |
| 1984 | int res = 0; |
| 1985 | int nbchars = 0; |
| 1986 | int buffree; |
| 1987 | |
| 1988 | if ((len <= MINLEN) && (len != 4)) |
| 1989 | len = MINLEN; |
| 1990 | buffree = in->buffer->size - in->buffer->use; |
| 1991 | if (buffree <= 0) { |
| 1992 | xmlGenericError(xmlGenericErrorContext, |
| 1993 | "xmlParserInputBufferGrow : buffer full !\n"); |
| 1994 | return(0); |
| 1995 | } |
| 1996 | if (len > buffree) |
| 1997 | len = buffree; |
| 1998 | |
| 1999 | buffer = (char *) xmlMalloc((len + 1) * sizeof(char)); |
| 2000 | if (buffer == NULL) { |
| 2001 | xmlGenericError(xmlGenericErrorContext, |
| 2002 | "xmlParserInputBufferGrow : out of memory !\n"); |
| 2003 | return(-1); |
| 2004 | } |
| 2005 | |
| 2006 | /* |
| 2007 | * Call the read method for this I/O type. |
| 2008 | */ |
| 2009 | if (in->readcallback != NULL) { |
| 2010 | res = in->readcallback(in->context, &buffer[0], len); |
| 2011 | } else { |
| 2012 | xmlGenericError(xmlGenericErrorContext, |
| 2013 | "xmlParserInputBufferGrow : no input !\n"); |
| 2014 | xmlFree(buffer); |
| 2015 | return(-1); |
| 2016 | } |
| 2017 | if (res < 0) { |
| 2018 | perror ("read error"); |
| 2019 | xmlFree(buffer); |
| 2020 | return(-1); |
| 2021 | } |
| 2022 | len = res; |
| 2023 | if (in->encoder != NULL) { |
| 2024 | /* |
| 2025 | * Store the data in the incoming raw buffer |
| 2026 | */ |
| 2027 | if (in->raw == NULL) { |
| 2028 | in->raw = xmlBufferCreate(); |
| 2029 | } |
| 2030 | xmlBufferAdd(in->raw, (const xmlChar *) buffer, len); |
| 2031 | |
| 2032 | /* |
| 2033 | * convert as much as possible to the parser reading buffer. |
| 2034 | */ |
| 2035 | nbchars = xmlCharEncInFunc(in->encoder, in->buffer, in->raw); |
| 2036 | if (nbchars < 0) { |
| 2037 | xmlGenericError(xmlGenericErrorContext, |
| 2038 | "xmlParserInputBufferGrow: encoder error\n"); |
| 2039 | return(-1); |
| 2040 | } |
| 2041 | } else { |
| 2042 | nbchars = len; |
| 2043 | buffer[nbchars] = 0; |
| 2044 | xmlBufferAdd(in->buffer, (xmlChar *) buffer, nbchars); |
| 2045 | } |
| 2046 | #ifdef DEBUG_INPUT |
| 2047 | xmlGenericError(xmlGenericErrorContext, |
| 2048 | "I/O: read %d chars, buffer %d/%d\n", |
| 2049 | nbchars, in->buffer->use, in->buffer->size); |
| 2050 | #endif |
| 2051 | xmlFree(buffer); |
| 2052 | return(nbchars); |
| 2053 | } |
| 2054 | |
| 2055 | /** |
| 2056 | * xmlParserInputBufferRead: |
| 2057 | * @in: a buffered parser input |
| 2058 | * @len: indicative value of the amount of chars to read |
| 2059 | * |
| 2060 | * Refresh the content of the input buffer, the old data are considered |
| 2061 | * consumed |
| 2062 | * This routine handle the I18N transcoding to internal UTF-8 |
| 2063 | * |
| 2064 | * Returns the number of chars read and stored in the buffer, or -1 |
| 2065 | * in case of error. |
| 2066 | */ |
| 2067 | int |
| 2068 | xmlParserInputBufferRead(xmlParserInputBufferPtr in, int len) { |
| 2069 | /* xmlBufferEmpty(in->buffer); */ |
| 2070 | if (in->readcallback != NULL) |
| 2071 | return(xmlParserInputBufferGrow(in, len)); |
| 2072 | else |
| 2073 | return(-1); |
| 2074 | } |
| 2075 | |
| 2076 | /** |
| 2077 | * xmlOutputBufferWrite: |
| 2078 | * @out: a buffered parser output |
| 2079 | * @len: the size in bytes of the array. |
| 2080 | * @buf: an char array |
| 2081 | * |
| 2082 | * Write the content of the array in the output I/O buffer |
| 2083 | * This routine handle the I18N transcoding from internal UTF-8 |
| 2084 | * The buffer is lossless, i.e. will store in case of partial |
| 2085 | * or delayed writes. |
| 2086 | * |
| 2087 | * Returns the number of chars immediately written, or -1 |
| 2088 | * in case of error. |
| 2089 | */ |
| 2090 | int |
| 2091 | xmlOutputBufferWrite(xmlOutputBufferPtr out, int len, const char *buf) { |
| 2092 | int nbchars = 0; /* number of chars to output to I/O */ |
| 2093 | int ret; /* return from function call */ |
| 2094 | int written = 0; /* number of char written to I/O so far */ |
| 2095 | int chunk; /* number of byte curreent processed from buf */ |
| 2096 | |
| 2097 | if (len < 0) return(0); |
| 2098 | |
| 2099 | do { |
| 2100 | chunk = len; |
| 2101 | if (chunk > 4 * MINLEN) |
| 2102 | chunk = 4 * MINLEN; |
| 2103 | |
| 2104 | /* |
| 2105 | * first handle encoding stuff. |
| 2106 | */ |
| 2107 | if (out->encoder != NULL) { |
| 2108 | /* |
| 2109 | * Store the data in the incoming raw buffer |
| 2110 | */ |
| 2111 | if (out->conv == NULL) { |
| 2112 | out->conv = xmlBufferCreate(); |
| 2113 | } |
| 2114 | xmlBufferAdd(out->buffer, (const xmlChar *) buf, chunk); |
| 2115 | |
| 2116 | if ((out->buffer->use < MINLEN) && (chunk == len)) |
| 2117 | goto done; |
| 2118 | |
| 2119 | /* |
| 2120 | * convert as much as possible to the parser reading buffer. |
| 2121 | */ |
| 2122 | ret = xmlCharEncOutFunc(out->encoder, out->conv, out->buffer); |
| 2123 | if (ret < 0) { |
| 2124 | xmlGenericError(xmlGenericErrorContext, |
| 2125 | "xmlOutputBufferWrite: encoder error\n"); |
| 2126 | return(-1); |
| 2127 | } |
| 2128 | nbchars = out->conv->use; |
| 2129 | } else { |
| 2130 | xmlBufferAdd(out->buffer, (const xmlChar *) buf, chunk); |
| 2131 | nbchars = out->buffer->use; |
| 2132 | } |
| 2133 | buf += chunk; |
| 2134 | len -= chunk; |
| 2135 | |
| 2136 | if ((nbchars < MINLEN) && (len <= 0)) |
| 2137 | goto done; |
| 2138 | |
| 2139 | if (out->writecallback) { |
| 2140 | /* |
| 2141 | * second write the stuff to the I/O channel |
| 2142 | */ |
| 2143 | if (out->encoder != NULL) { |
| 2144 | ret = out->writecallback(out->context, |
| 2145 | (const char *)out->conv->content, nbchars); |
| 2146 | if (ret >= 0) |
Daniel Veillard | edddff9 | 2001-05-02 10:58:52 +0000 | [diff] [blame] | 2147 | xmlBufferShrink(out->conv, ret); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2148 | } else { |
| 2149 | ret = out->writecallback(out->context, |
| 2150 | (const char *)out->buffer->content, nbchars); |
| 2151 | if (ret >= 0) |
Daniel Veillard | edddff9 | 2001-05-02 10:58:52 +0000 | [diff] [blame] | 2152 | xmlBufferShrink(out->buffer, ret); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2153 | } |
| 2154 | if (ret < 0) { |
| 2155 | xmlGenericError(xmlGenericErrorContext, |
| 2156 | "I/O: error %d writing %d bytes\n", ret, nbchars); |
| 2157 | return(ret); |
| 2158 | } |
| 2159 | out->written += ret; |
| 2160 | } |
| 2161 | written += nbchars; |
| 2162 | } while (len > 0); |
| 2163 | |
| 2164 | done: |
| 2165 | #ifdef DEBUG_INPUT |
| 2166 | xmlGenericError(xmlGenericErrorContext, |
| 2167 | "I/O: wrote %d chars\n", written); |
| 2168 | #endif |
| 2169 | return(written); |
| 2170 | } |
| 2171 | |
| 2172 | /** |
| 2173 | * xmlOutputBufferWriteString: |
| 2174 | * @out: a buffered parser output |
| 2175 | * @str: a zero terminated C string |
| 2176 | * |
| 2177 | * Write the content of the string in the output I/O buffer |
| 2178 | * This routine handle the I18N transcoding from internal UTF-8 |
| 2179 | * The buffer is lossless, i.e. will store in case of partial |
| 2180 | * or delayed writes. |
| 2181 | * |
| 2182 | * Returns the number of chars immediately written, or -1 |
| 2183 | * in case of error. |
| 2184 | */ |
| 2185 | int |
| 2186 | xmlOutputBufferWriteString(xmlOutputBufferPtr out, const char *str) { |
| 2187 | int len; |
| 2188 | |
| 2189 | if (str == NULL) |
| 2190 | return(-1); |
| 2191 | len = strlen(str); |
| 2192 | |
| 2193 | if (len > 0) |
| 2194 | return(xmlOutputBufferWrite(out, len, str)); |
| 2195 | return(len); |
| 2196 | } |
| 2197 | |
| 2198 | /** |
| 2199 | * xmlOutputBufferFlush: |
| 2200 | * @out: a buffered output |
| 2201 | * |
| 2202 | * flushes the output I/O channel |
| 2203 | * |
| 2204 | * Returns the number of byte written or -1 in case of error. |
| 2205 | */ |
| 2206 | int |
| 2207 | xmlOutputBufferFlush(xmlOutputBufferPtr out) { |
| 2208 | int nbchars = 0, ret = 0; |
| 2209 | |
| 2210 | /* |
| 2211 | * first handle encoding stuff. |
| 2212 | */ |
| 2213 | if ((out->conv != NULL) && (out->encoder != NULL)) { |
| 2214 | /* |
| 2215 | * convert as much as possible to the parser reading buffer. |
| 2216 | */ |
| 2217 | nbchars = xmlCharEncOutFunc(out->encoder, out->conv, out->buffer); |
| 2218 | if (nbchars < 0) { |
| 2219 | xmlGenericError(xmlGenericErrorContext, |
| 2220 | "xmlOutputBufferWrite: encoder error\n"); |
| 2221 | return(-1); |
| 2222 | } |
| 2223 | } |
| 2224 | |
| 2225 | /* |
| 2226 | * second flush the stuff to the I/O channel |
| 2227 | */ |
| 2228 | if ((out->conv != NULL) && (out->encoder != NULL) && |
| 2229 | (out->writecallback != NULL)) { |
| 2230 | ret = out->writecallback(out->context, |
| 2231 | (const char *)out->conv->content, out->conv->use); |
| 2232 | if (ret >= 0) |
| 2233 | xmlBufferShrink(out->conv, ret); |
| 2234 | } else if (out->writecallback != NULL) { |
| 2235 | ret = out->writecallback(out->context, |
| 2236 | (const char *)out->buffer->content, out->buffer->use); |
| 2237 | if (ret >= 0) |
| 2238 | xmlBufferShrink(out->buffer, ret); |
| 2239 | } |
| 2240 | if (ret < 0) { |
| 2241 | xmlGenericError(xmlGenericErrorContext, |
| 2242 | "I/O: error %d flushing %d bytes\n", ret, nbchars); |
| 2243 | return(ret); |
| 2244 | } |
| 2245 | out->written += ret; |
| 2246 | |
| 2247 | #ifdef DEBUG_INPUT |
| 2248 | xmlGenericError(xmlGenericErrorContext, |
| 2249 | "I/O: flushed %d chars\n", ret); |
| 2250 | #endif |
| 2251 | return(ret); |
| 2252 | } |
| 2253 | |
Daniel Veillard | 5e2dace | 2001-07-18 19:30:27 +0000 | [diff] [blame] | 2254 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2255 | * xmlParserGetDirectory: |
| 2256 | * @filename: the path to a file |
| 2257 | * |
| 2258 | * lookup the directory for that file |
| 2259 | * |
| 2260 | * Returns a new allocated string containing the directory, or NULL. |
| 2261 | */ |
| 2262 | char * |
| 2263 | xmlParserGetDirectory(const char *filename) { |
| 2264 | char *ret = NULL; |
| 2265 | char dir[1024]; |
| 2266 | char *cur; |
| 2267 | char sep = '/'; |
| 2268 | |
| 2269 | if (xmlInputCallbackInitialized == 0) |
| 2270 | xmlRegisterDefaultInputCallbacks(); |
| 2271 | |
| 2272 | if (filename == NULL) return(NULL); |
| 2273 | #ifdef WIN32 |
| 2274 | sep = '\\'; |
| 2275 | #endif |
| 2276 | |
| 2277 | strncpy(dir, filename, 1023); |
| 2278 | dir[1023] = 0; |
| 2279 | cur = &dir[strlen(dir)]; |
| 2280 | while (cur > dir) { |
| 2281 | if (*cur == sep) break; |
| 2282 | cur --; |
| 2283 | } |
| 2284 | if (*cur == sep) { |
| 2285 | if (cur == dir) dir[1] = 0; |
| 2286 | else *cur = 0; |
| 2287 | ret = xmlMemStrdup(dir); |
| 2288 | } else { |
| 2289 | if (getcwd(dir, 1024) != NULL) { |
| 2290 | dir[1023] = 0; |
| 2291 | ret = xmlMemStrdup(dir); |
| 2292 | } |
| 2293 | } |
| 2294 | return(ret); |
| 2295 | } |
| 2296 | |
| 2297 | /**************************************************************** |
| 2298 | * * |
| 2299 | * External entities loading * |
| 2300 | * * |
| 2301 | ****************************************************************/ |
| 2302 | |
Daniel Veillard | 5e2dace | 2001-07-18 19:30:27 +0000 | [diff] [blame] | 2303 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2304 | * xmlDefaultExternalEntityLoader: |
| 2305 | * @URL: the URL for the entity to load |
| 2306 | * @ID: the System ID for the entity to load |
| 2307 | * @ctxt: the context in which the entity is called or NULL |
| 2308 | * |
| 2309 | * By default we don't load external entitites, yet. |
| 2310 | * |
| 2311 | * Returns a new allocated xmlParserInputPtr, or NULL. |
| 2312 | */ |
| 2313 | static |
| 2314 | xmlParserInputPtr |
| 2315 | xmlDefaultExternalEntityLoader(const char *URL, const char *ID, |
| 2316 | xmlParserCtxtPtr ctxt) { |
| 2317 | xmlParserInputPtr ret = NULL; |
Daniel Veillard | 7d6fd21 | 2001-05-10 15:34:11 +0000 | [diff] [blame] | 2318 | const xmlChar *resource = NULL; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2319 | |
| 2320 | #ifdef DEBUG_EXTERNAL_ENTITIES |
| 2321 | xmlGenericError(xmlGenericErrorContext, |
Daniel Veillard | f012a64 | 2001-07-23 19:10:52 +0000 | [diff] [blame] | 2322 | "xmlDefaultExternalEntityLoader(%s, xxx)\n", URL); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2323 | #endif |
Daniel Veillard | 7d6fd21 | 2001-05-10 15:34:11 +0000 | [diff] [blame] | 2324 | #ifdef LIBXML_CATALOG_ENABLED |
| 2325 | /* |
| 2326 | * Try to load it from the resource pointed in the catalog |
| 2327 | */ |
| 2328 | if (ID != NULL) |
| 2329 | resource = xmlCatalogGetPublic((const xmlChar *)ID); |
| 2330 | if ((resource == NULL) && (URL != NULL)) |
| 2331 | resource = xmlCatalogGetSystem((const xmlChar *)URL); |
| 2332 | #endif |
| 2333 | |
| 2334 | if (resource == NULL) |
| 2335 | resource = (const xmlChar *)URL; |
| 2336 | |
| 2337 | if (resource == NULL) { |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 2338 | if ((ctxt->validate) && (ctxt->sax != NULL) && |
| 2339 | (ctxt->sax->error != NULL)) |
| 2340 | ctxt->sax->error(ctxt, |
| 2341 | "failed to load external entity \"%s\"\n", ID); |
| 2342 | else if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL)) |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2343 | ctxt->sax->warning(ctxt, |
| 2344 | "failed to load external entity \"%s\"\n", ID); |
| 2345 | return(NULL); |
| 2346 | } |
Daniel Veillard | 7d6fd21 | 2001-05-10 15:34:11 +0000 | [diff] [blame] | 2347 | ret = xmlNewInputFromFile(ctxt, (const char *)resource); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2348 | if (ret == NULL) { |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 2349 | if ((ctxt->validate) && (ctxt->sax != NULL) && |
| 2350 | (ctxt->sax->error != NULL)) |
| 2351 | ctxt->sax->error(ctxt, |
Daniel Veillard | 7d6fd21 | 2001-05-10 15:34:11 +0000 | [diff] [blame] | 2352 | "failed to load external entity \"%s\"\n", resource); |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 2353 | else if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL)) |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2354 | ctxt->sax->warning(ctxt, |
Daniel Veillard | 7d6fd21 | 2001-05-10 15:34:11 +0000 | [diff] [blame] | 2355 | "failed to load external entity \"%s\"\n", resource); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2356 | } |
| 2357 | return(ret); |
| 2358 | } |
| 2359 | |
| 2360 | static xmlExternalEntityLoader xmlCurrentExternalEntityLoader = |
| 2361 | xmlDefaultExternalEntityLoader; |
| 2362 | |
Daniel Veillard | 5e2dace | 2001-07-18 19:30:27 +0000 | [diff] [blame] | 2363 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2364 | * xmlSetExternalEntityLoader: |
| 2365 | * @f: the new entity resolver function |
| 2366 | * |
| 2367 | * Changes the defaultexternal entity resolver function for the application |
| 2368 | */ |
| 2369 | void |
| 2370 | xmlSetExternalEntityLoader(xmlExternalEntityLoader f) { |
| 2371 | xmlCurrentExternalEntityLoader = f; |
| 2372 | } |
| 2373 | |
Daniel Veillard | 5e2dace | 2001-07-18 19:30:27 +0000 | [diff] [blame] | 2374 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2375 | * xmlGetExternalEntityLoader: |
| 2376 | * |
| 2377 | * Get the default external entity resolver function for the application |
| 2378 | * |
| 2379 | * Returns the xmlExternalEntityLoader function pointer |
| 2380 | */ |
| 2381 | xmlExternalEntityLoader |
| 2382 | xmlGetExternalEntityLoader(void) { |
| 2383 | return(xmlCurrentExternalEntityLoader); |
| 2384 | } |
| 2385 | |
Daniel Veillard | 5e2dace | 2001-07-18 19:30:27 +0000 | [diff] [blame] | 2386 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2387 | * xmlLoadExternalEntity: |
| 2388 | * @URL: the URL for the entity to load |
| 2389 | * @ID: the System ID for the entity to load |
| 2390 | * @ctxt: the context in which the entity is called or NULL |
| 2391 | * |
| 2392 | * Load an external entity, note that the use of this function for |
| 2393 | * unparsed entities may generate problems |
| 2394 | * TODO: a more generic External entitiy API must be designed |
| 2395 | * |
| 2396 | * Returns the xmlParserInputPtr or NULL |
| 2397 | */ |
| 2398 | xmlParserInputPtr |
| 2399 | xmlLoadExternalEntity(const char *URL, const char *ID, |
| 2400 | xmlParserCtxtPtr ctxt) { |
| 2401 | return(xmlCurrentExternalEntityLoader(URL, ID, ctxt)); |
| 2402 | } |
| 2403 | |