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ef416fc2 | 1 | /* |
75bd9771 | 2 | * "$Id: file.c 7672 2008-06-18 22:03:02Z mike $" |
ef416fc2 | 3 | * |
71e16022 | 4 | * File functions for CUPS. |
ef416fc2 | 5 | * |
6 | * Since stdio files max out at 256 files on many systems, we have to | |
7 | * write similar functions without this limit. At the same time, using | |
8 | * our own file functions allows us to provide transparent support of | |
9 | * gzip'd print files, PPD files, etc. | |
10 | * | |
71e16022 | 11 | * Copyright 2007-2010 by Apple Inc. |
b86bc4cf | 12 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
ef416fc2 | 13 | * |
14 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 15 | * property of Apple Inc. and are protected by Federal copyright |
16 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
17 | * which should have been included with this file. If this file is | |
18 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
ef416fc2 | 19 | * |
20 | * Contents: | |
21 | * | |
22 | * cupsFileClose() - Close a CUPS file. | |
23 | * cupsFileCompression() - Return whether a file is compressed. | |
24 | * cupsFileEOF() - Return the end-of-file status. | |
fa73b229 | 25 | * cupsFileFind() - Find a file using the specified path. |
ef416fc2 | 26 | * cupsFileFlush() - Flush pending output. |
27 | * cupsFileGetChar() - Get a single character from a file. | |
28 | * cupsFileGetConf() - Get a line from a configuration file... | |
5a738aea MS |
29 | * cupsFileGetLine() - Get a CR and/or LF-terminated line that may contain |
30 | * binary data. | |
ef416fc2 | 31 | * cupsFileGets() - Get a CR and/or LF-terminated line. |
32 | * cupsFileLock() - Temporarily lock access to a file. | |
80ca4592 | 33 | * cupsFileNumber() - Return the file descriptor associated with a CUPS |
34 | * file. | |
ef416fc2 | 35 | * cupsFileOpen() - Open a CUPS file. |
36 | * cupsFileOpenFd() - Open a CUPS file using a file descriptor. | |
37 | * cupsFilePeekChar() - Peek at the next character from a file. | |
38 | * cupsFilePrintf() - Write a formatted string. | |
39 | * cupsFilePutChar() - Write a character. | |
40 | * cupsFilePuts() - Write a string. | |
41 | * cupsFileRead() - Read from a file. | |
5a738aea MS |
42 | * cupsFileRewind() - Set the current file position to the beginning of |
43 | * the file. | |
ef416fc2 | 44 | * cupsFileSeek() - Seek in a file. |
80ca4592 | 45 | * cupsFileStderr() - Return a CUPS file associated with stderr. |
46 | * cupsFileStdin() - Return a CUPS file associated with stdin. | |
47 | * cupsFileStdout() - Return a CUPS file associated with stdout. | |
ef416fc2 | 48 | * cupsFileTell() - Return the current file position. |
49 | * cupsFileUnlock() - Unlock access to a file. | |
50 | * cupsFileWrite() - Write to a file. | |
51 | * cups_compress() - Compress a buffer of data... | |
52 | * cups_fill() - Fill the input buffer... | |
53 | * cups_read() - Read from a file descriptor. | |
54 | * cups_write() - Write to a file descriptor. | |
55 | */ | |
56 | ||
57 | /* | |
58 | * Include necessary headers... | |
59 | */ | |
60 | ||
b9faaae1 | 61 | #include "file-private.h" |
c7017ecc MS |
62 | #include <sys/stat.h> |
63 | #include <sys/types.h> | |
ef416fc2 | 64 | |
65 | ||
66 | /* | |
67 | * Local functions... | |
68 | */ | |
69 | ||
70 | #ifdef HAVE_LIBZ | |
71 | static ssize_t cups_compress(cups_file_t *fp, const char *buf, size_t bytes); | |
72 | #endif /* HAVE_LIBZ */ | |
73 | static ssize_t cups_fill(cups_file_t *fp); | |
c7017ecc | 74 | static int cups_open(const char *filename, int mode); |
ef416fc2 | 75 | static ssize_t cups_read(cups_file_t *fp, char *buf, size_t bytes); |
76 | static ssize_t cups_write(cups_file_t *fp, const char *buf, size_t bytes); | |
77 | ||
78 | ||
79 | /* | |
80 | * 'cupsFileClose()' - Close a CUPS file. | |
5a738aea | 81 | * |
426c6a59 | 82 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 83 | */ |
84 | ||
85 | int /* O - 0 on success, -1 on error */ | |
86 | cupsFileClose(cups_file_t *fp) /* I - CUPS file */ | |
87 | { | |
88 | int fd; /* File descriptor */ | |
89 | char mode; /* Open mode */ | |
90 | int status; /* Return status */ | |
80ca4592 | 91 | int is_stdio; /* Is a stdio file? */ |
ef416fc2 | 92 | |
93 | ||
e07d4801 | 94 | DEBUG_printf(("cupsFileClose(fp=%p)", fp)); |
ef416fc2 | 95 | |
96 | /* | |
97 | * Range check... | |
98 | */ | |
99 | ||
100 | if (!fp) | |
101 | return (-1); | |
102 | ||
103 | /* | |
104 | * Flush pending write data... | |
105 | */ | |
106 | ||
107 | if (fp->mode == 'w') | |
108 | status = cupsFileFlush(fp); | |
109 | else | |
110 | status = 0; | |
111 | ||
112 | #ifdef HAVE_LIBZ | |
113 | if (fp->compressed && status >= 0) | |
114 | { | |
115 | if (fp->mode == 'r') | |
116 | { | |
117 | /* | |
118 | * Free decompression data... | |
119 | */ | |
120 | ||
121 | inflateEnd(&fp->stream); | |
122 | } | |
123 | else | |
124 | { | |
125 | /* | |
126 | * Flush any remaining compressed data... | |
127 | */ | |
128 | ||
129 | unsigned char trailer[8]; /* Trailer CRC and length */ | |
130 | int done; /* Done writing... */ | |
131 | ||
132 | ||
133 | fp->stream.avail_in = 0; | |
134 | ||
135 | for (done = 0;;) | |
136 | { | |
137 | if (fp->stream.next_out > fp->cbuf) | |
138 | { | |
139 | if (cups_write(fp, (char *)fp->cbuf, | |
140 | fp->stream.next_out - fp->cbuf) < 0) | |
141 | status = -1; | |
142 | ||
143 | fp->stream.next_out = fp->cbuf; | |
144 | fp->stream.avail_out = sizeof(fp->cbuf); | |
145 | } | |
146 | ||
147 | if (done || status < 0) | |
148 | break; | |
149 | ||
150 | done = deflate(&fp->stream, Z_FINISH) == Z_STREAM_END && | |
151 | fp->stream.next_out == fp->cbuf; | |
152 | } | |
153 | ||
154 | /* | |
155 | * Write the CRC and length... | |
156 | */ | |
157 | ||
158 | trailer[0] = fp->crc; | |
159 | trailer[1] = fp->crc >> 8; | |
160 | trailer[2] = fp->crc >> 16; | |
161 | trailer[3] = fp->crc >> 24; | |
162 | trailer[4] = fp->pos; | |
163 | trailer[5] = fp->pos >> 8; | |
164 | trailer[6] = fp->pos >> 16; | |
165 | trailer[7] = fp->pos >> 24; | |
166 | ||
167 | if (cups_write(fp, (char *)trailer, 8) < 0) | |
168 | status = -1; | |
169 | ||
170 | /* | |
171 | * Free all memory used by the compression stream... | |
172 | */ | |
173 | ||
174 | deflateEnd(&(fp->stream)); | |
175 | } | |
176 | } | |
177 | #endif /* HAVE_LIBZ */ | |
178 | ||
179 | /* | |
180 | * Save the file descriptor we used and free memory... | |
181 | */ | |
182 | ||
80ca4592 | 183 | fd = fp->fd; |
184 | mode = fp->mode; | |
185 | is_stdio = fp->is_stdio; | |
ef416fc2 | 186 | |
75bd9771 MS |
187 | if (fp->printf_buffer) |
188 | free(fp->printf_buffer); | |
189 | ||
ef416fc2 | 190 | free(fp); |
191 | ||
192 | /* | |
193 | * Close the file, returning the close status... | |
194 | */ | |
195 | ||
196 | if (mode == 's') | |
197 | { | |
198 | if (closesocket(fd) < 0) | |
199 | status = -1; | |
200 | } | |
80ca4592 | 201 | else if (!is_stdio) |
ef416fc2 | 202 | { |
203 | if (close(fd) < 0) | |
204 | status = -1; | |
205 | } | |
206 | ||
207 | return (status); | |
208 | } | |
209 | ||
210 | ||
211 | /* | |
212 | * 'cupsFileCompression()' - Return whether a file is compressed. | |
5a738aea | 213 | * |
426c6a59 | 214 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 215 | */ |
216 | ||
5a738aea | 217 | int /* O - @code CUPS_FILE_NONE@ or @code CUPS_FILE_GZIP@ */ |
ef416fc2 | 218 | cupsFileCompression(cups_file_t *fp) /* I - CUPS file */ |
219 | { | |
80ca4592 | 220 | return (fp ? fp->compressed : CUPS_FILE_NONE); |
ef416fc2 | 221 | } |
222 | ||
223 | ||
224 | /* | |
225 | * 'cupsFileEOF()' - Return the end-of-file status. | |
5a738aea | 226 | * |
426c6a59 | 227 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 228 | */ |
229 | ||
5a738aea | 230 | int /* O - 1 on end of file, 0 otherwise */ |
ef416fc2 | 231 | cupsFileEOF(cups_file_t *fp) /* I - CUPS file */ |
232 | { | |
80ca4592 | 233 | return (fp ? fp->eof : 1); |
ef416fc2 | 234 | } |
235 | ||
236 | ||
fa73b229 | 237 | /* |
238 | * 'cupsFileFind()' - Find a file using the specified path. | |
239 | * | |
240 | * This function allows the paths in the path string to be separated by | |
241 | * colons (UNIX standard) or semicolons (Windows standard) and stores the | |
242 | * result in the buffer supplied. If the file cannot be found in any of | |
5a738aea MS |
243 | * the supplied paths, @code NULL@ is returned. A @code NULL@ path only |
244 | * matches the current directory. | |
245 | * | |
426c6a59 | 246 | * @since CUPS 1.2/Mac OS X 10.5@ |
fa73b229 | 247 | */ |
248 | ||
5a738aea | 249 | const char * /* O - Full path to file or @code NULL@ if not found */ |
fa73b229 | 250 | cupsFileFind(const char *filename, /* I - File to find */ |
251 | const char *path, /* I - Colon/semicolon-separated path */ | |
4400e98d | 252 | int executable, /* I - 1 = executable files, 0 = any file/dir */ |
253 | char *buffer, /* I - Filename buffer */ | |
fa73b229 | 254 | int bufsize) /* I - Size of filename buffer */ |
255 | { | |
256 | char *bufptr, /* Current position in buffer */ | |
257 | *bufend; /* End of buffer */ | |
258 | ||
259 | ||
260 | /* | |
261 | * Range check input... | |
262 | */ | |
263 | ||
e07d4801 MS |
264 | DEBUG_printf(("cupsFileFind(filename=\"%s\", path=\"%s\", executable=%d, " |
265 | "buffer=%p, bufsize=%d)", filename, path, executable, buffer, | |
266 | bufsize)); | |
267 | ||
fa73b229 | 268 | if (!filename || !buffer || bufsize < 2) |
269 | return (NULL); | |
270 | ||
271 | if (!path) | |
272 | { | |
273 | /* | |
274 | * No path, so check current directory... | |
275 | */ | |
276 | ||
277 | if (!access(filename, 0)) | |
278 | { | |
279 | strlcpy(buffer, filename, bufsize); | |
280 | return (buffer); | |
281 | } | |
282 | else | |
283 | return (NULL); | |
284 | } | |
285 | ||
286 | /* | |
287 | * Now check each path and return the first match... | |
288 | */ | |
289 | ||
290 | bufend = buffer + bufsize - 1; | |
291 | bufptr = buffer; | |
292 | ||
293 | while (*path) | |
294 | { | |
b86bc4cf | 295 | #ifdef WIN32 |
296 | if (*path == ';' || (*path == ':' && ((bufptr - buffer) > 1 || !isalpha(buffer[0] & 255)))) | |
297 | #else | |
fa73b229 | 298 | if (*path == ';' || *path == ':') |
b86bc4cf | 299 | #endif /* WIN32 */ |
fa73b229 | 300 | { |
301 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
302 | *bufptr++ = '/'; | |
303 | ||
304 | strlcpy(bufptr, filename, bufend - bufptr); | |
305 | ||
4400e98d | 306 | #ifdef WIN32 |
fa73b229 | 307 | if (!access(buffer, 0)) |
4400e98d | 308 | #else |
309 | if (!access(buffer, executable ? X_OK : 0)) | |
310 | #endif /* WIN32 */ | |
b86bc4cf | 311 | { |
e07d4801 | 312 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 313 | return (buffer); |
b86bc4cf | 314 | } |
fa73b229 | 315 | |
316 | bufptr = buffer; | |
317 | } | |
318 | else if (bufptr < bufend) | |
319 | *bufptr++ = *path; | |
320 | ||
321 | path ++; | |
322 | } | |
323 | ||
324 | /* | |
325 | * Check the last path... | |
326 | */ | |
327 | ||
328 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
329 | *bufptr++ = '/'; | |
330 | ||
331 | strlcpy(bufptr, filename, bufend - bufptr); | |
332 | ||
333 | if (!access(buffer, 0)) | |
b86bc4cf | 334 | { |
e07d4801 | 335 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 336 | return (buffer); |
b86bc4cf | 337 | } |
fa73b229 | 338 | else |
b86bc4cf | 339 | { |
e07d4801 | 340 | DEBUG_puts("1cupsFileFind: Returning NULL"); |
fa73b229 | 341 | return (NULL); |
b86bc4cf | 342 | } |
fa73b229 | 343 | } |
344 | ||
345 | ||
ef416fc2 | 346 | /* |
347 | * 'cupsFileFlush()' - Flush pending output. | |
5a738aea | 348 | * |
426c6a59 | 349 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 350 | */ |
351 | ||
352 | int /* O - 0 on success, -1 on error */ | |
353 | cupsFileFlush(cups_file_t *fp) /* I - CUPS file */ | |
354 | { | |
2abf387c | 355 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 356 | |
357 | ||
e07d4801 | 358 | DEBUG_printf(("cupsFileFlush(fp=%p)", fp)); |
ef416fc2 | 359 | |
360 | /* | |
361 | * Range check input... | |
362 | */ | |
363 | ||
364 | if (!fp || fp->mode != 'w') | |
365 | { | |
e07d4801 | 366 | DEBUG_puts("1cupsFileFlush: Attempt to flush a read-only file..."); |
ef416fc2 | 367 | return (-1); |
368 | } | |
369 | ||
b86bc4cf | 370 | bytes = (ssize_t)(fp->ptr - fp->buf); |
ef416fc2 | 371 | |
e07d4801 | 372 | DEBUG_printf(("2cupsFileFlush: Flushing " CUPS_LLFMT " bytes...", |
634763e8 | 373 | CUPS_LLCAST bytes)); |
ecdc0628 | 374 | |
ef416fc2 | 375 | if (bytes > 0) |
376 | { | |
377 | #ifdef HAVE_LIBZ | |
378 | if (fp->compressed) | |
379 | bytes = cups_compress(fp, fp->buf, bytes); | |
380 | else | |
381 | #endif /* HAVE_LIBZ */ | |
382 | bytes = cups_write(fp, fp->buf, bytes); | |
383 | ||
384 | if (bytes < 0) | |
385 | return (-1); | |
386 | ||
387 | fp->ptr = fp->buf; | |
388 | } | |
f14324a7 | 389 | |
ef416fc2 | 390 | return (0); |
391 | } | |
392 | ||
393 | ||
394 | /* | |
395 | * 'cupsFileGetChar()' - Get a single character from a file. | |
5a738aea | 396 | * |
426c6a59 | 397 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 398 | */ |
399 | ||
5a738aea | 400 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 401 | cupsFileGetChar(cups_file_t *fp) /* I - CUPS file */ |
402 | { | |
403 | /* | |
404 | * Range check input... | |
405 | */ | |
406 | ||
407 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
b86bc4cf | 408 | { |
f14324a7 | 409 | DEBUG_puts("5cupsFileGetChar: Bad arguments!"); |
ef416fc2 | 410 | return (-1); |
b86bc4cf | 411 | } |
ef416fc2 | 412 | |
413 | /* | |
414 | * If the input buffer is empty, try to read more data... | |
415 | */ | |
416 | ||
417 | if (fp->ptr >= fp->end) | |
418 | if (cups_fill(fp) < 0) | |
b86bc4cf | 419 | { |
f14324a7 | 420 | DEBUG_puts("5cupsFileGetChar: Unable to fill buffer!"); |
ef416fc2 | 421 | return (-1); |
b86bc4cf | 422 | } |
ef416fc2 | 423 | |
424 | /* | |
425 | * Return the next character in the buffer... | |
426 | */ | |
427 | ||
f14324a7 | 428 | DEBUG_printf(("5cupsFileGetChar: Returning %d...", *(fp->ptr) & 255)); |
b86bc4cf | 429 | |
634763e8 MS |
430 | fp->pos ++; |
431 | ||
f14324a7 | 432 | DEBUG_printf(("6cupsFileGetChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 433 | |
ef416fc2 | 434 | return (*(fp->ptr)++ & 255); |
435 | } | |
436 | ||
437 | ||
438 | /* | |
439 | * 'cupsFileGetConf()' - Get a line from a configuration file... | |
5a738aea | 440 | * |
426c6a59 | 441 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 442 | */ |
443 | ||
5a738aea | 444 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 445 | cupsFileGetConf(cups_file_t *fp, /* I - CUPS file */ |
446 | char *buf, /* O - String buffer */ | |
447 | size_t buflen, /* I - Size of string buffer */ | |
448 | char **value, /* O - Pointer to value */ | |
449 | int *linenum) /* IO - Current line number */ | |
450 | { | |
451 | char *ptr; /* Pointer into line */ | |
452 | ||
453 | ||
454 | /* | |
455 | * Range check input... | |
456 | */ | |
457 | ||
e07d4801 MS |
458 | DEBUG_printf(("2cupsFileGetConf(fp=%p, buf=%p, buflen=" CUPS_LLFMT |
459 | ", value=%p, linenum=%p)", fp, buf, CUPS_LLCAST buflen, | |
634763e8 MS |
460 | value, linenum)); |
461 | ||
ef416fc2 | 462 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || |
463 | !buf || buflen < 2 || !value) | |
464 | { | |
465 | if (value) | |
466 | *value = NULL; | |
467 | ||
468 | return (NULL); | |
469 | } | |
470 | ||
471 | /* | |
472 | * Read the next non-comment line... | |
473 | */ | |
474 | ||
475 | *value = NULL; | |
f7deaa1a | 476 | |
ef416fc2 | 477 | while (cupsFileGets(fp, buf, buflen)) |
478 | { | |
479 | (*linenum) ++; | |
480 | ||
481 | /* | |
482 | * Strip any comments... | |
483 | */ | |
484 | ||
485 | if ((ptr = strchr(buf, '#')) != NULL) | |
486 | { | |
f7deaa1a | 487 | if (ptr > buf && ptr[-1] == '\\') |
ef416fc2 | 488 | { |
f7deaa1a | 489 | // Unquote the #... |
490 | _cups_strcpy(ptr - 1, ptr); | |
ef416fc2 | 491 | } |
f7deaa1a | 492 | else |
493 | { | |
494 | // Strip the comment and any trailing whitespace... | |
495 | while (ptr > buf) | |
496 | { | |
7cf5915e | 497 | if (!_cups_isspace(ptr[-1])) |
f7deaa1a | 498 | break; |
499 | ||
500 | ptr --; | |
501 | } | |
ef416fc2 | 502 | |
f7deaa1a | 503 | *ptr = '\0'; |
504 | } | |
ef416fc2 | 505 | } |
506 | ||
507 | /* | |
508 | * Strip leading whitespace... | |
509 | */ | |
510 | ||
7cf5915e | 511 | for (ptr = buf; _cups_isspace(*ptr); ptr ++); |
ef416fc2 | 512 | |
513 | if (ptr > buf) | |
514 | _cups_strcpy(buf, ptr); | |
515 | ||
516 | /* | |
517 | * See if there is anything left... | |
518 | */ | |
519 | ||
520 | if (buf[0]) | |
521 | { | |
522 | /* | |
523 | * Yes, grab any value and return... | |
524 | */ | |
525 | ||
526 | for (ptr = buf; *ptr; ptr ++) | |
7cf5915e | 527 | if (_cups_isspace(*ptr)) |
ef416fc2 | 528 | break; |
529 | ||
530 | if (*ptr) | |
531 | { | |
532 | /* | |
533 | * Have a value, skip any other spaces... | |
534 | */ | |
535 | ||
7cf5915e | 536 | while (_cups_isspace(*ptr)) |
ef416fc2 | 537 | *ptr++ = '\0'; |
538 | ||
539 | if (*ptr) | |
540 | *value = ptr; | |
541 | ||
542 | /* | |
543 | * Strip trailing whitespace and > for lines that begin with <... | |
544 | */ | |
545 | ||
546 | ptr += strlen(ptr) - 1; | |
547 | ||
548 | if (buf[0] == '<' && *ptr == '>') | |
549 | *ptr-- = '\0'; | |
550 | else if (buf[0] == '<' && *ptr != '>') | |
551 | { | |
552 | /* | |
553 | * Syntax error... | |
554 | */ | |
555 | ||
556 | *value = NULL; | |
557 | return (buf); | |
558 | } | |
559 | ||
7cf5915e | 560 | while (ptr > *value && _cups_isspace(*ptr)) |
ef416fc2 | 561 | *ptr-- = '\0'; |
562 | } | |
563 | ||
564 | /* | |
565 | * Return the line... | |
566 | */ | |
567 | ||
568 | return (buf); | |
569 | } | |
570 | } | |
571 | ||
572 | return (NULL); | |
573 | } | |
574 | ||
575 | ||
80ca4592 | 576 | /* |
577 | * 'cupsFileGetLine()' - Get a CR and/or LF-terminated line that may | |
578 | * contain binary data. | |
579 | * | |
5a738aea MS |
580 | * This function differs from @link cupsFileGets@ in that the trailing CR |
581 | * and LF are preserved, as is any binary data on the line. The buffer is | |
582 | * nul-terminated, however you should use the returned length to determine | |
80ca4592 | 583 | * the number of bytes on the line. |
5a738aea | 584 | * |
426c6a59 | 585 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 586 | */ |
587 | ||
5a738aea | 588 | size_t /* O - Number of bytes on line or 0 on end of file */ |
80ca4592 | 589 | cupsFileGetLine(cups_file_t *fp, /* I - File to read from */ |
590 | char *buf, /* I - Buffer */ | |
591 | size_t buflen) /* I - Size of buffer */ | |
592 | { | |
593 | int ch; /* Character from file */ | |
594 | char *ptr, /* Current position in line buffer */ | |
595 | *end; /* End of line buffer */ | |
596 | ||
597 | ||
598 | /* | |
599 | * Range check input... | |
600 | */ | |
601 | ||
e07d4801 | 602 | DEBUG_printf(("2cupsFileGetLine(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", |
634763e8 MS |
603 | fp, buf, CUPS_LLCAST buflen)); |
604 | ||
80ca4592 | 605 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 3) |
606 | return (0); | |
607 | ||
608 | /* | |
609 | * Now loop until we have a valid line... | |
610 | */ | |
611 | ||
612 | for (ptr = buf, end = buf + buflen - 2; ptr < end ;) | |
613 | { | |
614 | if (fp->ptr >= fp->end) | |
615 | if (cups_fill(fp) <= 0) | |
616 | break; | |
617 | ||
618 | *ptr++ = ch = *(fp->ptr)++; | |
634763e8 | 619 | fp->pos ++; |
80ca4592 | 620 | |
621 | if (ch == '\r') | |
622 | { | |
623 | /* | |
624 | * Check for CR LF... | |
625 | */ | |
626 | ||
627 | if (fp->ptr >= fp->end) | |
628 | if (cups_fill(fp) <= 0) | |
629 | break; | |
630 | ||
631 | if (*(fp->ptr) == '\n') | |
634763e8 | 632 | { |
80ca4592 | 633 | *ptr++ = *(fp->ptr)++; |
634763e8 MS |
634 | fp->pos ++; |
635 | } | |
80ca4592 | 636 | |
637 | break; | |
638 | } | |
639 | else if (ch == '\n') | |
640 | { | |
641 | /* | |
642 | * Line feed ends a line... | |
643 | */ | |
644 | ||
645 | break; | |
646 | } | |
647 | } | |
648 | ||
649 | *ptr = '\0'; | |
650 | ||
e07d4801 | 651 | DEBUG_printf(("4cupsFileGetLine: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 652 | |
80ca4592 | 653 | return (ptr - buf); |
654 | } | |
655 | ||
656 | ||
ef416fc2 | 657 | /* |
658 | * 'cupsFileGets()' - Get a CR and/or LF-terminated line. | |
5a738aea | 659 | * |
426c6a59 | 660 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 661 | */ |
662 | ||
5a738aea | 663 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 664 | cupsFileGets(cups_file_t *fp, /* I - CUPS file */ |
665 | char *buf, /* O - String buffer */ | |
666 | size_t buflen) /* I - Size of string buffer */ | |
667 | { | |
668 | int ch; /* Character from file */ | |
669 | char *ptr, /* Current position in line buffer */ | |
670 | *end; /* End of line buffer */ | |
671 | ||
672 | ||
673 | /* | |
674 | * Range check input... | |
675 | */ | |
676 | ||
e07d4801 | 677 | DEBUG_printf(("2cupsFileGets(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
678 | CUPS_LLCAST buflen)); |
679 | ||
ef416fc2 | 680 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 2) |
681 | return (NULL); | |
682 | ||
683 | /* | |
684 | * Now loop until we have a valid line... | |
685 | */ | |
686 | ||
687 | for (ptr = buf, end = buf + buflen - 1; ptr < end ;) | |
688 | { | |
689 | if (fp->ptr >= fp->end) | |
690 | if (cups_fill(fp) <= 0) | |
691 | { | |
692 | if (ptr == buf) | |
693 | return (NULL); | |
694 | else | |
695 | break; | |
696 | } | |
697 | ||
698 | ch = *(fp->ptr)++; | |
634763e8 | 699 | fp->pos ++; |
ef416fc2 | 700 | |
701 | if (ch == '\r') | |
702 | { | |
703 | /* | |
704 | * Check for CR LF... | |
705 | */ | |
706 | ||
707 | if (fp->ptr >= fp->end) | |
708 | if (cups_fill(fp) <= 0) | |
709 | break; | |
710 | ||
711 | if (*(fp->ptr) == '\n') | |
634763e8 MS |
712 | { |
713 | fp->ptr ++; | |
714 | fp->pos ++; | |
715 | } | |
ef416fc2 | 716 | |
717 | break; | |
718 | } | |
719 | else if (ch == '\n') | |
720 | { | |
721 | /* | |
722 | * Line feed ends a line... | |
723 | */ | |
724 | ||
725 | break; | |
726 | } | |
727 | else | |
728 | *ptr++ = ch; | |
729 | } | |
730 | ||
731 | *ptr = '\0'; | |
732 | ||
e07d4801 | 733 | DEBUG_printf(("4cupsFileGets: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 734 | |
ef416fc2 | 735 | return (buf); |
736 | } | |
737 | ||
738 | ||
739 | /* | |
740 | * 'cupsFileLock()' - Temporarily lock access to a file. | |
5a738aea | 741 | * |
426c6a59 | 742 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 743 | */ |
744 | ||
745 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 746 | cupsFileLock(cups_file_t *fp, /* I - CUPS file */ |
ef416fc2 | 747 | int block) /* I - 1 to wait for the lock, 0 to fail right away */ |
748 | { | |
749 | /* | |
750 | * Range check... | |
751 | */ | |
752 | ||
753 | if (!fp || fp->mode == 's') | |
754 | return (-1); | |
755 | ||
756 | /* | |
757 | * Try the lock... | |
758 | */ | |
759 | ||
760 | #ifdef WIN32 | |
536bc2c6 | 761 | return (_locking(fp->fd, block ? _LK_LOCK : _LK_NBLCK, 0)); |
ef416fc2 | 762 | #else |
763 | return (lockf(fp->fd, block ? F_LOCK : F_TLOCK, 0)); | |
764 | #endif /* WIN32 */ | |
765 | } | |
766 | ||
767 | ||
768 | /* | |
769 | * 'cupsFileNumber()' - Return the file descriptor associated with a CUPS file. | |
5a738aea | 770 | * |
426c6a59 | 771 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 772 | */ |
773 | ||
774 | int /* O - File descriptor */ | |
775 | cupsFileNumber(cups_file_t *fp) /* I - CUPS file */ | |
776 | { | |
5a738aea MS |
777 | if (fp) |
778 | return (fp->fd); | |
779 | else | |
780 | return (-1); | |
ef416fc2 | 781 | } |
782 | ||
783 | ||
784 | /* | |
785 | * 'cupsFileOpen()' - Open a CUPS file. | |
5a738aea MS |
786 | * |
787 | * The "mode" parameter can be "r" to read, "w" to write, overwriting any | |
788 | * existing file, "a" to append to an existing file or create a new file, | |
789 | * or "s" to open a socket connection. | |
790 | * | |
634763e8 MS |
791 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
792 | * supplied which enables Flate compression of the file. Compression is | |
793 | * not supported for the "a" (append) mode. | |
5a738aea MS |
794 | * |
795 | * When opening a socket connection, the filename is a string of the form | |
796 | * "address:port" or "hostname:port". The socket will make an IPv4 or IPv6 | |
797 | * connection as needed, generally preferring IPv6 connections when there is | |
798 | * a choice. | |
799 | * | |
426c6a59 | 800 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 801 | */ |
802 | ||
5a738aea | 803 | cups_file_t * /* O - CUPS file or @code NULL@ if the file or socket cannot be opened */ |
ef416fc2 | 804 | cupsFileOpen(const char *filename, /* I - Name of file */ |
805 | const char *mode) /* I - Open mode */ | |
806 | { | |
807 | cups_file_t *fp; /* New CUPS file */ | |
808 | int fd; /* File descriptor */ | |
809 | char hostname[1024], /* Hostname */ | |
810 | *portname; /* Port "name" (number or service) */ | |
811 | http_addrlist_t *addrlist; /* Host address list */ | |
812 | ||
813 | ||
e07d4801 | 814 | DEBUG_printf(("cupsFileOpen(filename=\"%s\", mode=\"%s\")", filename, |
b423cd4c | 815 | mode)); |
816 | ||
ef416fc2 | 817 | /* |
818 | * Range check input... | |
819 | */ | |
820 | ||
821 | if (!filename || !mode || | |
634763e8 MS |
822 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
823 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 824 | return (NULL); |
825 | ||
826 | /* | |
827 | * Open the file... | |
828 | */ | |
829 | ||
830 | switch (*mode) | |
831 | { | |
832 | case 'a' : /* Append file */ | |
c7017ecc MS |
833 | fd = cups_open(filename, |
834 | O_RDWR | O_CREAT | O_APPEND | O_LARGEFILE | O_BINARY); | |
ef416fc2 | 835 | break; |
836 | ||
837 | case 'r' : /* Read file */ | |
b86bc4cf | 838 | fd = open(filename, O_RDONLY | O_LARGEFILE | O_BINARY, 0); |
ef416fc2 | 839 | break; |
840 | ||
841 | case 'w' : /* Write file */ | |
c7017ecc MS |
842 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); |
843 | if (fd < 0 && errno == ENOENT) | |
844 | { | |
845 | fd = cups_open(filename, | |
846 | O_WRONLY | O_CREAT | O_EXCL | O_LARGEFILE | O_BINARY); | |
847 | if (fd < 0 && errno == EEXIST) | |
848 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); | |
849 | } | |
850 | ||
851 | if (fd >= 0) | |
852 | #ifdef WIN32 | |
853 | _chsize(fd, 0); | |
854 | #else | |
855 | ftruncate(fd, 0); | |
856 | #endif /* WIN32 */ | |
ef416fc2 | 857 | break; |
858 | ||
859 | case 's' : /* Read/write socket */ | |
860 | strlcpy(hostname, filename, sizeof(hostname)); | |
861 | if ((portname = strrchr(hostname, ':')) != NULL) | |
862 | *portname++ = '\0'; | |
863 | else | |
864 | return (NULL); | |
865 | ||
866 | /* | |
867 | * Lookup the hostname and service... | |
868 | */ | |
869 | ||
870 | if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL) | |
871 | return (NULL); | |
872 | ||
873 | /* | |
874 | * Connect to the server... | |
875 | */ | |
876 | ||
877 | if (!httpAddrConnect(addrlist, &fd)) | |
878 | { | |
879 | httpAddrFreeList(addrlist); | |
880 | return (NULL); | |
881 | } | |
882 | ||
883 | httpAddrFreeList(addrlist); | |
884 | break; | |
885 | ||
886 | default : /* Remove bogus compiler warning... */ | |
887 | return (NULL); | |
888 | } | |
889 | ||
890 | if (fd < 0) | |
891 | return (NULL); | |
892 | ||
893 | /* | |
894 | * Create the CUPS file structure... | |
895 | */ | |
896 | ||
897 | if ((fp = cupsFileOpenFd(fd, mode)) == NULL) | |
898 | { | |
899 | if (*mode == 's') | |
900 | closesocket(fd); | |
901 | else | |
902 | close(fd); | |
903 | } | |
904 | ||
905 | /* | |
906 | * Return it... | |
907 | */ | |
908 | ||
909 | return (fp); | |
910 | } | |
911 | ||
912 | /* | |
913 | * 'cupsFileOpenFd()' - Open a CUPS file using a file descriptor. | |
5a738aea | 914 | * |
634763e8 MS |
915 | * The "mode" parameter can be "r" to read, "w" to write, "a" to append, |
916 | * or "s" to treat the file descriptor as a bidirectional socket connection. | |
5a738aea | 917 | * |
634763e8 MS |
918 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
919 | * supplied which enables Flate compression of the file. Compression is | |
920 | * not supported for the "a" (append) mode. | |
5a738aea | 921 | * |
426c6a59 | 922 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 923 | */ |
924 | ||
5a738aea | 925 | cups_file_t * /* O - CUPS file or @code NULL@ if the file could not be opened */ |
ef416fc2 | 926 | cupsFileOpenFd(int fd, /* I - File descriptor */ |
927 | const char *mode) /* I - Open mode */ | |
928 | { | |
929 | cups_file_t *fp; /* New CUPS file */ | |
930 | ||
931 | ||
e07d4801 | 932 | DEBUG_printf(("cupsFileOpenFd(fd=%d, mode=\"%s\")", fd, mode)); |
b423cd4c | 933 | |
ef416fc2 | 934 | /* |
935 | * Range check input... | |
936 | */ | |
937 | ||
938 | if (fd < 0 || !mode || | |
634763e8 MS |
939 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
940 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 941 | return (NULL); |
942 | ||
943 | /* | |
944 | * Allocate memory... | |
945 | */ | |
946 | ||
947 | if ((fp = calloc(1, sizeof(cups_file_t))) == NULL) | |
948 | return (NULL); | |
949 | ||
950 | /* | |
951 | * Open the file... | |
952 | */ | |
953 | ||
954 | fp->fd = fd; | |
955 | ||
956 | switch (*mode) | |
957 | { | |
ef416fc2 | 958 | case 'a' : |
634763e8 MS |
959 | fp->pos = lseek(fd, 0, SEEK_END); |
960 | ||
961 | case 'w' : | |
ef416fc2 | 962 | fp->mode = 'w'; |
963 | fp->ptr = fp->buf; | |
964 | fp->end = fp->buf + sizeof(fp->buf); | |
965 | ||
966 | #ifdef HAVE_LIBZ | |
967 | if (mode[1] >= '1' && mode[1] <= '9') | |
968 | { | |
969 | /* | |
970 | * Open a compressed stream, so write the standard gzip file | |
971 | * header... | |
972 | */ | |
973 | ||
974 | unsigned char header[10]; /* gzip file header */ | |
975 | time_t curtime; /* Current time */ | |
976 | ||
977 | ||
978 | curtime = time(NULL); | |
979 | header[0] = 0x1f; | |
980 | header[1] = 0x8b; | |
981 | header[2] = Z_DEFLATED; | |
982 | header[3] = 0; | |
983 | header[4] = curtime; | |
984 | header[5] = curtime >> 8; | |
985 | header[6] = curtime >> 16; | |
986 | header[7] = curtime >> 24; | |
987 | header[8] = 0; | |
988 | header[9] = 0x03; | |
989 | ||
990 | cups_write(fp, (char *)header, 10); | |
991 | ||
992 | /* | |
993 | * Initialize the compressor... | |
994 | */ | |
995 | ||
996 | deflateInit2(&(fp->stream), mode[1] - '0', Z_DEFLATED, -15, 8, | |
997 | Z_DEFAULT_STRATEGY); | |
998 | ||
999 | fp->stream.next_out = fp->cbuf; | |
1000 | fp->stream.avail_out = sizeof(fp->cbuf); | |
1001 | fp->compressed = 1; | |
1002 | fp->crc = crc32(0L, Z_NULL, 0); | |
1003 | } | |
1004 | #endif /* HAVE_LIBZ */ | |
1005 | break; | |
1006 | ||
1007 | case 'r' : | |
1008 | fp->mode = 'r'; | |
1009 | break; | |
1010 | ||
1011 | case 's' : | |
1012 | fp->mode = 's'; | |
1013 | break; | |
1014 | ||
1015 | default : /* Remove bogus compiler warning... */ | |
1016 | return (NULL); | |
1017 | } | |
1018 | ||
1019 | /* | |
1020 | * Don't pass this file to child processes... | |
1021 | */ | |
1022 | ||
1023 | #ifndef WIN32 | |
1024 | fcntl(fp->fd, F_SETFD, fcntl(fp->fd, F_GETFD) | FD_CLOEXEC); | |
1025 | #endif /* !WIN32 */ | |
1026 | ||
1027 | return (fp); | |
1028 | } | |
1029 | ||
1030 | ||
1031 | /* | |
1032 | * 'cupsFilePeekChar()' - Peek at the next character from a file. | |
5a738aea | 1033 | * |
426c6a59 | 1034 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1035 | */ |
1036 | ||
5a738aea | 1037 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 1038 | cupsFilePeekChar(cups_file_t *fp) /* I - CUPS file */ |
1039 | { | |
1040 | /* | |
1041 | * Range check input... | |
1042 | */ | |
1043 | ||
1044 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
1045 | return (-1); | |
1046 | ||
1047 | /* | |
1048 | * If the input buffer is empty, try to read more data... | |
1049 | */ | |
1050 | ||
1051 | if (fp->ptr >= fp->end) | |
1052 | if (cups_fill(fp) < 0) | |
1053 | return (-1); | |
1054 | ||
1055 | /* | |
1056 | * Return the next character in the buffer... | |
1057 | */ | |
1058 | ||
1059 | return (*(fp->ptr) & 255); | |
1060 | } | |
1061 | ||
1062 | ||
1063 | /* | |
1064 | * 'cupsFilePrintf()' - Write a formatted string. | |
5a738aea | 1065 | * |
426c6a59 | 1066 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1067 | */ |
1068 | ||
5a738aea | 1069 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1070 | cupsFilePrintf(cups_file_t *fp, /* I - CUPS file */ |
1071 | const char *format, /* I - Printf-style format string */ | |
1072 | ...) /* I - Additional args as necessary */ | |
1073 | { | |
1074 | va_list ap; /* Argument list */ | |
2abf387c | 1075 | ssize_t bytes; /* Formatted size */ |
ecdc0628 | 1076 | |
ef416fc2 | 1077 | |
e07d4801 | 1078 | DEBUG_printf(("2cupsFilePrintf(fp=%p, format=\"%s\", ...)", fp, format)); |
ef416fc2 | 1079 | |
1080 | if (!fp || !format || (fp->mode != 'w' && fp->mode != 's')) | |
1081 | return (-1); | |
1082 | ||
75bd9771 MS |
1083 | if (!fp->printf_buffer) |
1084 | { | |
1085 | /* | |
1086 | * Start with an 1k printf buffer... | |
1087 | */ | |
1088 | ||
1089 | if ((fp->printf_buffer = malloc(1024)) == NULL) | |
1090 | return (-1); | |
1091 | ||
1092 | fp->printf_size = 1024; | |
1093 | } | |
1094 | ||
ef416fc2 | 1095 | va_start(ap, format); |
75bd9771 | 1096 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); |
ef416fc2 | 1097 | va_end(ap); |
1098 | ||
536bc2c6 | 1099 | if (bytes >= (ssize_t)fp->printf_size) |
75bd9771 MS |
1100 | { |
1101 | /* | |
1102 | * Expand the printf buffer... | |
1103 | */ | |
1104 | ||
1105 | char *temp; /* Temporary buffer pointer */ | |
1106 | ||
1107 | ||
1108 | if (bytes > 65535) | |
1109 | return (-1); | |
1110 | ||
1111 | if ((temp = realloc(fp->printf_buffer, bytes + 1)) == NULL) | |
1112 | return (-1); | |
1113 | ||
1114 | fp->printf_buffer = temp; | |
1115 | fp->printf_size = bytes + 1; | |
1116 | ||
1117 | va_start(ap, format); | |
1118 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); | |
1119 | va_end(ap); | |
1120 | } | |
ecdc0628 | 1121 | |
ef416fc2 | 1122 | if (fp->mode == 's') |
634763e8 | 1123 | { |
75bd9771 | 1124 | if (cups_write(fp, fp->printf_buffer, bytes) < 0) |
634763e8 MS |
1125 | return (-1); |
1126 | ||
1127 | fp->pos += bytes; | |
1128 | ||
e07d4801 | 1129 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 MS |
1130 | |
1131 | return (bytes); | |
1132 | } | |
ef416fc2 | 1133 | |
1134 | if ((fp->ptr + bytes) > fp->end) | |
1135 | if (cupsFileFlush(fp)) | |
1136 | return (-1); | |
1137 | ||
1138 | fp->pos += bytes; | |
1139 | ||
e07d4801 | 1140 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1141 | |
ef416fc2 | 1142 | if (bytes > sizeof(fp->buf)) |
1143 | { | |
1144 | #ifdef HAVE_LIBZ | |
1145 | if (fp->compressed) | |
75bd9771 | 1146 | return (cups_compress(fp, fp->printf_buffer, bytes)); |
ef416fc2 | 1147 | else |
1148 | #endif /* HAVE_LIBZ */ | |
75bd9771 | 1149 | return (cups_write(fp, fp->printf_buffer, bytes)); |
ef416fc2 | 1150 | } |
1151 | else | |
1152 | { | |
75bd9771 | 1153 | memcpy(fp->ptr, fp->printf_buffer, bytes); |
ef416fc2 | 1154 | fp->ptr += bytes; |
1155 | return (bytes); | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | ||
1160 | /* | |
1161 | * 'cupsFilePutChar()' - Write a character. | |
5a738aea | 1162 | * |
426c6a59 | 1163 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1164 | */ |
1165 | ||
1166 | int /* O - 0 on success, -1 on error */ | |
1167 | cupsFilePutChar(cups_file_t *fp, /* I - CUPS file */ | |
1168 | int c) /* I - Character to write */ | |
1169 | { | |
1170 | /* | |
1171 | * Range check input... | |
1172 | */ | |
1173 | ||
1174 | if (!fp || (fp->mode != 'w' && fp->mode != 's')) | |
1175 | return (-1); | |
1176 | ||
1177 | if (fp->mode == 's') | |
1178 | { | |
1179 | /* | |
1180 | * Send character immediately over socket... | |
1181 | */ | |
1182 | ||
1183 | char ch; /* Output character */ | |
1184 | ||
1185 | ||
1186 | ch = c; | |
1187 | ||
1188 | if (send(fp->fd, &ch, 1, 0) < 1) | |
1189 | return (-1); | |
1190 | } | |
1191 | else | |
1192 | { | |
1193 | /* | |
1194 | * Buffer it up... | |
1195 | */ | |
1196 | ||
1197 | if (fp->ptr >= fp->end) | |
1198 | if (cupsFileFlush(fp)) | |
1199 | return (-1); | |
1200 | ||
1201 | *(fp->ptr) ++ = c; | |
1202 | } | |
1203 | ||
1204 | fp->pos ++; | |
1205 | ||
e07d4801 | 1206 | DEBUG_printf(("4cupsFilePutChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1207 | |
ef416fc2 | 1208 | return (0); |
1209 | } | |
1210 | ||
1211 | ||
58dc1933 MS |
1212 | /* |
1213 | * 'cupsFilePutConf()' - Write a configuration line. | |
1214 | * | |
1215 | * This function handles any comment escaping of the value. | |
1216 | * | |
178cb736 | 1217 | * @since CUPS 1.4/Mac OS X 10.6@ |
58dc1933 MS |
1218 | */ |
1219 | ||
1220 | ssize_t /* O - Number of bytes written or -1 on error */ | |
1221 | cupsFilePutConf(cups_file_t *fp, /* I - CUPS file */ | |
1222 | const char *directive, /* I - Directive */ | |
1223 | const char *value) /* I - Value */ | |
1224 | { | |
1225 | ssize_t bytes, /* Number of bytes written */ | |
1226 | temp; /* Temporary byte count */ | |
1227 | const char *ptr; /* Pointer into value */ | |
1228 | ||
1229 | ||
1230 | if (!fp || !directive || !*directive) | |
1231 | return (-1); | |
1232 | ||
1233 | if ((bytes = cupsFilePuts(fp, directive)) < 0) | |
1234 | return (-1); | |
1235 | ||
1236 | if (cupsFilePutChar(fp, ' ') < 0) | |
1237 | return (-1); | |
1238 | bytes ++; | |
1239 | ||
1240 | if (value && *value) | |
1241 | { | |
1242 | if ((ptr = strchr(value, '#')) != NULL) | |
1243 | { | |
1244 | /* | |
1245 | * Need to quote the first # in the info string... | |
1246 | */ | |
1247 | ||
1248 | if ((temp = cupsFileWrite(fp, value, ptr - value)) < 0) | |
1249 | return (-1); | |
1250 | bytes += temp; | |
1251 | ||
1252 | if (cupsFilePutChar(fp, '\\') < 0) | |
1253 | return (-1); | |
1254 | bytes ++; | |
1255 | ||
1256 | if ((temp = cupsFilePuts(fp, ptr)) < 0) | |
1257 | return (-1); | |
1258 | bytes += temp; | |
1259 | } | |
1260 | else if ((temp = cupsFilePuts(fp, value)) < 0) | |
1261 | return (-1); | |
1262 | else | |
1263 | bytes += temp; | |
1264 | } | |
1265 | ||
1266 | if (cupsFilePutChar(fp, '\n') < 0) | |
1267 | return (-1); | |
1268 | else | |
1269 | return (bytes + 1); | |
1270 | } | |
1271 | ||
1272 | ||
ef416fc2 | 1273 | /* |
1274 | * 'cupsFilePuts()' - Write a string. | |
5a738aea MS |
1275 | * |
1276 | * Like the @code fputs@ function, no newline is appended to the string. | |
1277 | * | |
426c6a59 | 1278 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1279 | */ |
1280 | ||
5a738aea | 1281 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1282 | cupsFilePuts(cups_file_t *fp, /* I - CUPS file */ |
1283 | const char *s) /* I - String to write */ | |
1284 | { | |
2abf387c | 1285 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 1286 | |
1287 | ||
1288 | /* | |
1289 | * Range check input... | |
1290 | */ | |
1291 | ||
1292 | if (!fp || !s || (fp->mode != 'w' && fp->mode != 's')) | |
1293 | return (-1); | |
1294 | ||
1295 | /* | |
1296 | * Write the string... | |
1297 | */ | |
1298 | ||
b86bc4cf | 1299 | bytes = (int)strlen(s); |
ef416fc2 | 1300 | |
1301 | if (fp->mode == 's') | |
1302 | { | |
1303 | if (cups_write(fp, s, bytes) < 0) | |
1304 | return (-1); | |
1305 | ||
1306 | fp->pos += bytes; | |
1307 | ||
e07d4801 | 1308 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1309 | |
ef416fc2 | 1310 | return (bytes); |
1311 | } | |
1312 | ||
1313 | if ((fp->ptr + bytes) > fp->end) | |
1314 | if (cupsFileFlush(fp)) | |
1315 | return (-1); | |
1316 | ||
1317 | fp->pos += bytes; | |
1318 | ||
e07d4801 | 1319 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1320 | |
ef416fc2 | 1321 | if (bytes > sizeof(fp->buf)) |
1322 | { | |
1323 | #ifdef HAVE_LIBZ | |
1324 | if (fp->compressed) | |
1325 | return (cups_compress(fp, s, bytes)); | |
1326 | else | |
1327 | #endif /* HAVE_LIBZ */ | |
1328 | return (cups_write(fp, s, bytes)); | |
1329 | } | |
1330 | else | |
1331 | { | |
1332 | memcpy(fp->ptr, s, bytes); | |
1333 | fp->ptr += bytes; | |
1334 | return (bytes); | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | ||
1339 | /* | |
1340 | * 'cupsFileRead()' - Read from a file. | |
5a738aea | 1341 | * |
426c6a59 | 1342 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1343 | */ |
1344 | ||
5a738aea | 1345 | ssize_t /* O - Number of bytes read or -1 on error */ |
ef416fc2 | 1346 | cupsFileRead(cups_file_t *fp, /* I - CUPS file */ |
1347 | char *buf, /* O - Buffer */ | |
1348 | size_t bytes) /* I - Number of bytes to read */ | |
1349 | { | |
2abf387c | 1350 | size_t total; /* Total bytes read */ |
1351 | ssize_t count; /* Bytes read */ | |
ef416fc2 | 1352 | |
1353 | ||
e07d4801 | 1354 | DEBUG_printf(("2cupsFileRead(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 1355 | CUPS_LLCAST bytes)); |
ef416fc2 | 1356 | |
1357 | /* | |
1358 | * Range check input... | |
1359 | */ | |
1360 | ||
1361 | if (!fp || !buf || bytes < 0 || (fp->mode != 'r' && fp->mode != 's')) | |
1362 | return (-1); | |
1363 | ||
1364 | if (bytes == 0) | |
1365 | return (0); | |
1366 | ||
1367 | /* | |
1368 | * Loop until all bytes are read... | |
1369 | */ | |
1370 | ||
1371 | total = 0; | |
1372 | while (bytes > 0) | |
1373 | { | |
1374 | if (fp->ptr >= fp->end) | |
1375 | if (cups_fill(fp) <= 0) | |
1376 | { | |
e07d4801 MS |
1377 | DEBUG_printf(("4cupsFileRead: cups_fill() returned -1, total=" |
1378 | CUPS_LLFMT, CUPS_LLCAST total)); | |
ef416fc2 | 1379 | |
1380 | if (total > 0) | |
b86bc4cf | 1381 | return ((ssize_t)total); |
ef416fc2 | 1382 | else |
1383 | return (-1); | |
1384 | } | |
1385 | ||
b86bc4cf | 1386 | count = (ssize_t)(fp->end - fp->ptr); |
1387 | if (count > (ssize_t)bytes) | |
1388 | count = (ssize_t)bytes; | |
ef416fc2 | 1389 | |
1390 | memcpy(buf, fp->ptr, count); | |
1391 | fp->ptr += count; | |
634763e8 MS |
1392 | fp->pos += count; |
1393 | ||
e07d4801 | 1394 | DEBUG_printf(("4cupsFileRead: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1395 | |
1396 | /* | |
1397 | * Update the counts for the last read... | |
1398 | */ | |
1399 | ||
1400 | bytes -= count; | |
1401 | total += count; | |
1402 | buf += count; | |
1403 | } | |
1404 | ||
1405 | /* | |
1406 | * Return the total number of bytes read... | |
1407 | */ | |
1408 | ||
e07d4801 | 1409 | DEBUG_printf(("3cupsFileRead: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
ef416fc2 | 1410 | |
b86bc4cf | 1411 | return ((ssize_t)total); |
ef416fc2 | 1412 | } |
1413 | ||
1414 | ||
1415 | /* | |
5a738aea MS |
1416 | * 'cupsFileRewind()' - Set the current file position to the beginning of the |
1417 | * file. | |
1418 | * | |
426c6a59 | 1419 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1420 | */ |
1421 | ||
5a738aea | 1422 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1423 | cupsFileRewind(cups_file_t *fp) /* I - CUPS file */ |
1424 | { | |
80ca4592 | 1425 | /* |
1426 | * Range check input... | |
1427 | */ | |
1428 | ||
e07d4801 MS |
1429 | DEBUG_printf(("cupsFileRewind(fp=%p)", fp)); |
1430 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); | |
634763e8 | 1431 | |
80ca4592 | 1432 | if (!fp || fp->mode != 'r') |
1433 | return (-1); | |
1434 | ||
1435 | /* | |
1436 | * Handle special cases... | |
1437 | */ | |
1438 | ||
634763e8 | 1439 | if (fp->bufpos == 0) |
80ca4592 | 1440 | { |
1441 | /* | |
1442 | * No seeking necessary... | |
1443 | */ | |
1444 | ||
634763e8 MS |
1445 | fp->pos = 0; |
1446 | ||
80ca4592 | 1447 | if (fp->ptr) |
1448 | { | |
1449 | fp->ptr = fp->buf; | |
1450 | fp->eof = 0; | |
1451 | } | |
1452 | ||
e07d4801 | 1453 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1454 | |
80ca4592 | 1455 | return (0); |
1456 | } | |
1457 | ||
1458 | /* | |
1459 | * Otherwise, seek in the file and cleanup any compression buffers... | |
1460 | */ | |
1461 | ||
1462 | #ifdef HAVE_LIBZ | |
1463 | if (fp->compressed) | |
1464 | { | |
1465 | inflateEnd(&fp->stream); | |
1466 | fp->compressed = 0; | |
1467 | } | |
1468 | #endif /* HAVE_LIBZ */ | |
1469 | ||
c9fc04c6 MS |
1470 | if (lseek(fp->fd, 0, SEEK_SET)) |
1471 | { | |
e07d4801 | 1472 | DEBUG_printf(("1cupsFileRewind: lseek failed: %s", strerror(errno))); |
c9fc04c6 MS |
1473 | return (-1); |
1474 | } | |
80ca4592 | 1475 | |
634763e8 MS |
1476 | fp->bufpos = 0; |
1477 | fp->pos = 0; | |
1478 | fp->ptr = NULL; | |
1479 | fp->end = NULL; | |
1480 | fp->eof = 0; | |
1481 | ||
e07d4801 | 1482 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
80ca4592 | 1483 | |
1484 | return (0); | |
ef416fc2 | 1485 | } |
1486 | ||
1487 | ||
1488 | /* | |
1489 | * 'cupsFileSeek()' - Seek in a file. | |
5a738aea | 1490 | * |
426c6a59 | 1491 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1492 | */ |
1493 | ||
5a738aea | 1494 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1495 | cupsFileSeek(cups_file_t *fp, /* I - CUPS file */ |
1496 | off_t pos) /* I - Position in file */ | |
1497 | { | |
2abf387c | 1498 | ssize_t bytes; /* Number bytes in buffer */ |
ef416fc2 | 1499 | |
1500 | ||
e07d4801 | 1501 | DEBUG_printf(("cupsFileSeek(fp=%p, pos=" CUPS_LLFMT ")", fp, |
634763e8 | 1502 | CUPS_LLCAST pos)); |
e07d4801 MS |
1503 | DEBUG_printf(("2cupsFileSeek: fp->pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
1504 | DEBUG_printf(("2cupsFileSeek: fp->ptr=%p, fp->end=%p", fp->ptr, fp->end)); | |
ef416fc2 | 1505 | |
1506 | /* | |
1507 | * Range check input... | |
1508 | */ | |
1509 | ||
1510 | if (!fp || pos < 0 || fp->mode != 'r') | |
1511 | return (-1); | |
1512 | ||
80ca4592 | 1513 | /* |
1514 | * Handle special cases... | |
1515 | */ | |
1516 | ||
1517 | if (pos == 0) | |
1518 | return (cupsFileRewind(fp)); | |
1519 | ||
634763e8 | 1520 | if (fp->ptr) |
b423cd4c | 1521 | { |
634763e8 | 1522 | bytes = (ssize_t)(fp->end - fp->buf); |
b423cd4c | 1523 | |
e07d4801 | 1524 | DEBUG_printf(("2cupsFileSeek: bytes=" CUPS_LLFMT, CUPS_LLCAST bytes)); |
c168a833 | 1525 | |
634763e8 | 1526 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
b423cd4c | 1527 | { |
634763e8 MS |
1528 | /* |
1529 | * No seeking necessary... | |
1530 | */ | |
1531 | ||
1532 | fp->pos = pos; | |
1533 | fp->ptr = fp->buf + pos - fp->bufpos; | |
b423cd4c | 1534 | fp->eof = 0; |
b423cd4c | 1535 | |
634763e8 MS |
1536 | return (pos); |
1537 | } | |
b423cd4c | 1538 | } |
1539 | ||
80ca4592 | 1540 | #ifdef HAVE_LIBZ |
1541 | if (!fp->compressed && !fp->ptr) | |
1542 | { | |
1543 | /* | |
1544 | * Preload a buffer to determine whether the file is compressed... | |
1545 | */ | |
1546 | ||
1547 | if (cups_fill(fp) < 0) | |
1548 | return (-1); | |
1549 | } | |
1550 | #endif /* HAVE_LIBZ */ | |
1551 | ||
ef416fc2 | 1552 | /* |
634763e8 | 1553 | * Seek forwards or backwards... |
ef416fc2 | 1554 | */ |
1555 | ||
ef416fc2 | 1556 | fp->eof = 0; |
1557 | ||
634763e8 | 1558 | if (pos < fp->bufpos) |
ef416fc2 | 1559 | { |
1560 | /* | |
1561 | * Need to seek backwards... | |
1562 | */ | |
1563 | ||
e07d4801 | 1564 | DEBUG_puts("2cupsFileSeek: SEEK BACKWARDS"); |
80ca4592 | 1565 | |
ef416fc2 | 1566 | #ifdef HAVE_LIBZ |
1567 | if (fp->compressed) | |
1568 | { | |
1569 | inflateEnd(&fp->stream); | |
1570 | ||
1571 | lseek(fp->fd, 0, SEEK_SET); | |
634763e8 MS |
1572 | fp->bufpos = 0; |
1573 | fp->pos = 0; | |
1574 | fp->ptr = NULL; | |
1575 | fp->end = NULL; | |
ef416fc2 | 1576 | |
1577 | while ((bytes = cups_fill(fp)) > 0) | |
634763e8 | 1578 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1579 | break; |
1580 | ||
1581 | if (bytes <= 0) | |
1582 | return (-1); | |
80ca4592 | 1583 | |
634763e8 MS |
1584 | fp->ptr = fp->buf + pos - fp->bufpos; |
1585 | fp->pos = pos; | |
ef416fc2 | 1586 | } |
1587 | else | |
1588 | #endif /* HAVE_LIBZ */ | |
1589 | { | |
634763e8 MS |
1590 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1591 | fp->pos = fp->bufpos; | |
1592 | fp->ptr = NULL; | |
1593 | fp->end = NULL; | |
80ca4592 | 1594 | |
e07d4801 | 1595 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1596 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1597 | } |
1598 | } | |
634763e8 | 1599 | else |
ef416fc2 | 1600 | { |
1601 | /* | |
1602 | * Need to seek forwards... | |
1603 | */ | |
1604 | ||
e07d4801 | 1605 | DEBUG_puts("2cupsFileSeek: SEEK FORWARDS"); |
80ca4592 | 1606 | |
ef416fc2 | 1607 | #ifdef HAVE_LIBZ |
80ca4592 | 1608 | if (fp->compressed) |
ef416fc2 | 1609 | { |
1610 | while ((bytes = cups_fill(fp)) > 0) | |
80ca4592 | 1611 | { |
634763e8 | 1612 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1613 | break; |
80ca4592 | 1614 | } |
ef416fc2 | 1615 | |
1616 | if (bytes <= 0) | |
1617 | return (-1); | |
80ca4592 | 1618 | |
634763e8 MS |
1619 | fp->ptr = fp->buf + pos - fp->bufpos; |
1620 | fp->pos = pos; | |
ef416fc2 | 1621 | } |
1622 | else | |
1623 | #endif /* HAVE_LIBZ */ | |
1624 | { | |
634763e8 MS |
1625 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1626 | fp->pos = fp->bufpos; | |
1627 | fp->ptr = NULL; | |
1628 | fp->end = NULL; | |
80ca4592 | 1629 | |
e07d4801 | 1630 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1631 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1632 | } |
1633 | } | |
ef416fc2 | 1634 | |
e07d4801 | 1635 | DEBUG_printf(("2cupsFileSeek: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1636 | |
1637 | return (fp->pos); | |
1638 | } | |
1639 | ||
1640 | ||
80ca4592 | 1641 | /* |
1642 | * 'cupsFileStderr()' - Return a CUPS file associated with stderr. | |
5a738aea | 1643 | * |
426c6a59 | 1644 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 1645 | */ |
1646 | ||
5a738aea | 1647 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1648 | cupsFileStderr(void) |
1649 | { | |
1650 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1651 | ||
1652 | ||
1653 | /* | |
1654 | * Open file descriptor 2 as needed... | |
1655 | */ | |
1656 | ||
1657 | if (!cg->stdio_files[2]) | |
1658 | { | |
1659 | /* | |
1660 | * Flush any pending output on the stdio file... | |
1661 | */ | |
1662 | ||
1663 | fflush(stderr); | |
1664 | ||
1665 | /* | |
1666 | * Open file descriptor 2... | |
1667 | */ | |
1668 | ||
1669 | if ((cg->stdio_files[2] = cupsFileOpenFd(2, "w")) != NULL) | |
1670 | cg->stdio_files[2]->is_stdio = 1; | |
1671 | } | |
1672 | ||
1673 | return (cg->stdio_files[2]); | |
1674 | } | |
1675 | ||
1676 | ||
1677 | /* | |
1678 | * 'cupsFileStdin()' - Return a CUPS file associated with stdin. | |
5a738aea | 1679 | * |
426c6a59 | 1680 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 1681 | */ |
1682 | ||
5a738aea | 1683 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1684 | cupsFileStdin(void) |
1685 | { | |
1686 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1687 | ||
1688 | ||
1689 | /* | |
1690 | * Open file descriptor 0 as needed... | |
1691 | */ | |
1692 | ||
1693 | if (!cg->stdio_files[0]) | |
1694 | { | |
1695 | /* | |
1696 | * Open file descriptor 0... | |
1697 | */ | |
1698 | ||
1699 | if ((cg->stdio_files[0] = cupsFileOpenFd(0, "r")) != NULL) | |
1700 | cg->stdio_files[0]->is_stdio = 1; | |
1701 | } | |
1702 | ||
1703 | return (cg->stdio_files[0]); | |
1704 | } | |
1705 | ||
1706 | ||
1707 | /* | |
1708 | * 'cupsFileStdout()' - Return a CUPS file associated with stdout. | |
5a738aea | 1709 | * |
426c6a59 | 1710 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 1711 | */ |
1712 | ||
5a738aea | 1713 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1714 | cupsFileStdout(void) |
1715 | { | |
1716 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1717 | ||
1718 | ||
1719 | /* | |
1720 | * Open file descriptor 1 as needed... | |
1721 | */ | |
1722 | ||
1723 | if (!cg->stdio_files[1]) | |
1724 | { | |
1725 | /* | |
1726 | * Flush any pending output on the stdio file... | |
1727 | */ | |
1728 | ||
1729 | fflush(stdout); | |
1730 | ||
1731 | /* | |
1732 | * Open file descriptor 1... | |
1733 | */ | |
1734 | ||
1735 | if ((cg->stdio_files[1] = cupsFileOpenFd(1, "w")) != NULL) | |
1736 | cg->stdio_files[1]->is_stdio = 1; | |
1737 | } | |
1738 | ||
1739 | return (cg->stdio_files[1]); | |
1740 | } | |
1741 | ||
1742 | ||
ef416fc2 | 1743 | /* |
1744 | * 'cupsFileTell()' - Return the current file position. | |
5a738aea | 1745 | * |
426c6a59 | 1746 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1747 | */ |
1748 | ||
1749 | off_t /* O - File position */ | |
1750 | cupsFileTell(cups_file_t *fp) /* I - CUPS file */ | |
1751 | { | |
e07d4801 MS |
1752 | DEBUG_printf(("2cupsFileTell(fp=%p)", fp)); |
1753 | DEBUG_printf(("3cupsFileTell: pos=" CUPS_LLFMT, | |
1754 | CUPS_LLCAST (fp ? fp->pos : -1))); | |
634763e8 | 1755 | |
80ca4592 | 1756 | return (fp ? fp->pos : 0); |
ef416fc2 | 1757 | } |
1758 | ||
1759 | ||
1760 | /* | |
1761 | * 'cupsFileUnlock()' - Unlock access to a file. | |
5a738aea | 1762 | * |
426c6a59 | 1763 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1764 | */ |
1765 | ||
1766 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 1767 | cupsFileUnlock(cups_file_t *fp) /* I - CUPS file */ |
ef416fc2 | 1768 | { |
1769 | /* | |
1770 | * Range check... | |
1771 | */ | |
1772 | ||
e07d4801 | 1773 | DEBUG_printf(("cupsFileUnlock(fp=%p)", fp)); |
634763e8 | 1774 | |
ef416fc2 | 1775 | if (!fp || fp->mode == 's') |
1776 | return (-1); | |
1777 | ||
1778 | /* | |
1779 | * Unlock... | |
1780 | */ | |
1781 | ||
1782 | #ifdef WIN32 | |
536bc2c6 | 1783 | return (_locking(fp->fd, _LK_UNLCK, 0)); |
ef416fc2 | 1784 | #else |
1785 | return (lockf(fp->fd, F_ULOCK, 0)); | |
1786 | #endif /* WIN32 */ | |
1787 | } | |
1788 | ||
1789 | ||
1790 | /* | |
1791 | * 'cupsFileWrite()' - Write to a file. | |
5a738aea | 1792 | * |
426c6a59 | 1793 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1794 | */ |
1795 | ||
5a738aea | 1796 | ssize_t /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1797 | cupsFileWrite(cups_file_t *fp, /* I - CUPS file */ |
1798 | const char *buf, /* I - Buffer */ | |
1799 | size_t bytes) /* I - Number of bytes to write */ | |
1800 | { | |
1801 | /* | |
1802 | * Range check input... | |
1803 | */ | |
1804 | ||
e07d4801 | 1805 | DEBUG_printf(("2cupsFileWrite(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", |
634763e8 MS |
1806 | fp, buf, CUPS_LLCAST bytes)); |
1807 | ||
ef416fc2 | 1808 | if (!fp || !buf || bytes < 0 || (fp->mode != 'w' && fp->mode != 's')) |
1809 | return (-1); | |
1810 | ||
1811 | if (bytes == 0) | |
1812 | return (0); | |
1813 | ||
1814 | /* | |
1815 | * Write the buffer... | |
1816 | */ | |
1817 | ||
1818 | if (fp->mode == 's') | |
1819 | { | |
1820 | if (cups_write(fp, buf, bytes) < 0) | |
1821 | return (-1); | |
1822 | ||
b86bc4cf | 1823 | fp->pos += (off_t)bytes; |
ef416fc2 | 1824 | |
e07d4801 | 1825 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1826 | |
b86bc4cf | 1827 | return ((ssize_t)bytes); |
ef416fc2 | 1828 | } |
1829 | ||
1830 | if ((fp->ptr + bytes) > fp->end) | |
1831 | if (cupsFileFlush(fp)) | |
1832 | return (-1); | |
1833 | ||
b86bc4cf | 1834 | fp->pos += (off_t)bytes; |
ef416fc2 | 1835 | |
e07d4801 | 1836 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1837 | |
ef416fc2 | 1838 | if (bytes > sizeof(fp->buf)) |
1839 | { | |
1840 | #ifdef HAVE_LIBZ | |
1841 | if (fp->compressed) | |
1842 | return (cups_compress(fp, buf, bytes)); | |
1843 | else | |
1844 | #endif /* HAVE_LIBZ */ | |
1845 | return (cups_write(fp, buf, bytes)); | |
1846 | } | |
1847 | else | |
1848 | { | |
1849 | memcpy(fp->ptr, buf, bytes); | |
1850 | fp->ptr += bytes; | |
b86bc4cf | 1851 | return ((ssize_t)bytes); |
ef416fc2 | 1852 | } |
1853 | } | |
1854 | ||
1855 | ||
1856 | #ifdef HAVE_LIBZ | |
1857 | /* | |
1858 | * 'cups_compress()' - Compress a buffer of data... | |
1859 | */ | |
1860 | ||
1861 | static ssize_t /* O - Number of bytes written or -1 */ | |
1862 | cups_compress(cups_file_t *fp, /* I - CUPS file */ | |
1863 | const char *buf, /* I - Buffer */ | |
1864 | size_t bytes) /* I - Number bytes */ | |
1865 | { | |
e07d4801 | 1866 | DEBUG_printf(("7cups_compress(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 1867 | CUPS_LLCAST bytes)); |
ecdc0628 | 1868 | |
ef416fc2 | 1869 | /* |
1870 | * Update the CRC... | |
1871 | */ | |
1872 | ||
1873 | fp->crc = crc32(fp->crc, (const Bytef *)buf, bytes); | |
1874 | ||
1875 | /* | |
1876 | * Deflate the bytes... | |
1877 | */ | |
1878 | ||
1879 | fp->stream.next_in = (Bytef *)buf; | |
1880 | fp->stream.avail_in = bytes; | |
1881 | ||
1882 | while (fp->stream.avail_in > 0) | |
1883 | { | |
1884 | /* | |
1885 | * Flush the current buffer... | |
1886 | */ | |
1887 | ||
e07d4801 | 1888 | DEBUG_printf(("9cups_compress: avail_in=%d, avail_out=%d", |
634763e8 | 1889 | fp->stream.avail_in, fp->stream.avail_out)); |
ecdc0628 | 1890 | |
ef416fc2 | 1891 | if (fp->stream.avail_out < (int)(sizeof(fp->cbuf) / 8)) |
1892 | { | |
1893 | if (cups_write(fp, (char *)fp->cbuf, fp->stream.next_out - fp->cbuf) < 0) | |
1894 | return (-1); | |
ecdc0628 | 1895 | |
1896 | fp->stream.next_out = fp->cbuf; | |
1897 | fp->stream.avail_out = sizeof(fp->cbuf); | |
ef416fc2 | 1898 | } |
1899 | ||
1900 | deflate(&(fp->stream), Z_NO_FLUSH); | |
1901 | } | |
1902 | ||
1903 | return (bytes); | |
1904 | } | |
1905 | #endif /* HAVE_LIBZ */ | |
1906 | ||
1907 | ||
1908 | /* | |
1909 | * 'cups_fill()' - Fill the input buffer... | |
1910 | */ | |
1911 | ||
1912 | static ssize_t /* O - Number of bytes or -1 */ | |
1913 | cups_fill(cups_file_t *fp) /* I - CUPS file */ | |
1914 | { | |
1915 | ssize_t bytes; /* Number of bytes read */ | |
1916 | #ifdef HAVE_LIBZ | |
c277e2f8 | 1917 | int status; /* Decompression status */ |
ef416fc2 | 1918 | const unsigned char *ptr, /* Pointer into buffer */ |
1919 | *end; /* End of buffer */ | |
1920 | #endif /* HAVE_LIBZ */ | |
1921 | ||
1922 | ||
e07d4801 MS |
1923 | DEBUG_printf(("7cups_fill(fp=%p)", fp)); |
1924 | DEBUG_printf(("9cups_fill: fp->ptr=%p, fp->end=%p, fp->buf=%p, " | |
1925 | "fp->bufpos=" CUPS_LLFMT ", fp->eof=%d", | |
634763e8 | 1926 | fp->ptr, fp->end, fp->buf, CUPS_LLCAST fp->bufpos, fp->eof)); |
ef416fc2 | 1927 | |
1928 | if (fp->ptr && fp->end) | |
c9fc04c6 | 1929 | fp->bufpos += fp->end - fp->buf; |
ef416fc2 | 1930 | |
1931 | #ifdef HAVE_LIBZ | |
e07d4801 | 1932 | DEBUG_printf(("9cups_fill: fp->compressed=%d", fp->compressed)); |
b423cd4c | 1933 | |
ef416fc2 | 1934 | while (!fp->ptr || fp->compressed) |
1935 | { | |
1936 | /* | |
1937 | * Check to see if we have read any data yet; if not, see if we have a | |
1938 | * compressed file... | |
1939 | */ | |
1940 | ||
1941 | if (!fp->ptr) | |
1942 | { | |
1943 | /* | |
1944 | * Reset the file position in case we are seeking... | |
1945 | */ | |
1946 | ||
1947 | fp->compressed = 0; | |
ef416fc2 | 1948 | |
1949 | /* | |
1950 | * Read the first bytes in the file to determine if we have a gzip'd | |
1951 | * file... | |
1952 | */ | |
1953 | ||
fa73b229 | 1954 | if ((bytes = cups_read(fp, (char *)fp->buf, sizeof(fp->buf))) < 0) |
ef416fc2 | 1955 | { |
1956 | /* | |
1957 | * Can't read from file! | |
1958 | */ | |
1959 | ||
e07d4801 | 1960 | DEBUG_printf(("9cups_fill: cups_read() returned " CUPS_LLFMT, |
b423cd4c | 1961 | CUPS_LLCAST bytes)); |
1962 | ||
ef416fc2 | 1963 | return (-1); |
1964 | } | |
1965 | ||
fa73b229 | 1966 | if (bytes < 10 || fp->buf[0] != 0x1f || |
e00b005a | 1967 | (fp->buf[1] & 255) != 0x8b || |
fa73b229 | 1968 | fp->buf[2] != 8 || (fp->buf[3] & 0xe0) != 0) |
ef416fc2 | 1969 | { |
1970 | /* | |
1971 | * Not a gzip'd file! | |
1972 | */ | |
1973 | ||
ef416fc2 | 1974 | fp->ptr = fp->buf; |
1975 | fp->end = fp->buf + bytes; | |
1976 | ||
e07d4801 | 1977 | DEBUG_printf(("9cups_fill: Returning " CUPS_LLFMT, |
c9fc04c6 | 1978 | CUPS_LLCAST bytes)); |
b423cd4c | 1979 | |
ef416fc2 | 1980 | return (bytes); |
1981 | } | |
1982 | ||
1983 | /* | |
1984 | * Parse header junk: extra data, original name, and comment... | |
1985 | */ | |
1986 | ||
fa73b229 | 1987 | ptr = (unsigned char *)fp->buf + 10; |
1988 | end = (unsigned char *)fp->buf + bytes; | |
ef416fc2 | 1989 | |
fa73b229 | 1990 | if (fp->buf[3] & 0x04) |
ef416fc2 | 1991 | { |
1992 | /* | |
1993 | * Skip extra data... | |
1994 | */ | |
1995 | ||
1996 | if ((ptr + 2) > end) | |
1997 | { | |
1998 | /* | |
1999 | * Can't read from file! | |
2000 | */ | |
2001 | ||
2002 | return (-1); | |
2003 | } | |
2004 | ||
2005 | bytes = ((unsigned char)ptr[1] << 8) | (unsigned char)ptr[0]; | |
2006 | ptr += 2 + bytes; | |
2007 | ||
2008 | if (ptr > end) | |
2009 | { | |
2010 | /* | |
2011 | * Can't read from file! | |
2012 | */ | |
2013 | ||
2014 | return (-1); | |
2015 | } | |
2016 | } | |
2017 | ||
fa73b229 | 2018 | if (fp->buf[3] & 0x08) |
ef416fc2 | 2019 | { |
2020 | /* | |
2021 | * Skip original name data... | |
2022 | */ | |
2023 | ||
2024 | while (ptr < end && *ptr) | |
2025 | ptr ++; | |
2026 | ||
2027 | if (ptr < end) | |
2028 | ptr ++; | |
2029 | else | |
2030 | { | |
2031 | /* | |
2032 | * Can't read from file! | |
2033 | */ | |
2034 | ||
2035 | return (-1); | |
2036 | } | |
2037 | } | |
2038 | ||
fa73b229 | 2039 | if (fp->buf[3] & 0x10) |
ef416fc2 | 2040 | { |
2041 | /* | |
2042 | * Skip comment data... | |
2043 | */ | |
2044 | ||
2045 | while (ptr < end && *ptr) | |
2046 | ptr ++; | |
2047 | ||
2048 | if (ptr < end) | |
2049 | ptr ++; | |
2050 | else | |
2051 | { | |
2052 | /* | |
2053 | * Can't read from file! | |
2054 | */ | |
2055 | ||
2056 | return (-1); | |
2057 | } | |
2058 | } | |
2059 | ||
fa73b229 | 2060 | if (fp->buf[3] & 0x02) |
ef416fc2 | 2061 | { |
2062 | /* | |
2063 | * Skip header CRC data... | |
2064 | */ | |
2065 | ||
2066 | ptr += 2; | |
2067 | ||
2068 | if (ptr > end) | |
2069 | { | |
2070 | /* | |
2071 | * Can't read from file! | |
2072 | */ | |
2073 | ||
2074 | return (-1); | |
2075 | } | |
2076 | } | |
2077 | ||
fa73b229 | 2078 | /* |
2079 | * Copy the flate-compressed data to the compression buffer... | |
2080 | */ | |
2081 | ||
2082 | if ((bytes = end - ptr) > 0) | |
2083 | memcpy(fp->cbuf, ptr, bytes); | |
2084 | ||
ef416fc2 | 2085 | /* |
2086 | * Setup the decompressor data... | |
2087 | */ | |
2088 | ||
2089 | fp->stream.zalloc = (alloc_func)0; | |
2090 | fp->stream.zfree = (free_func)0; | |
2091 | fp->stream.opaque = (voidpf)0; | |
fa73b229 | 2092 | fp->stream.next_in = (Bytef *)fp->cbuf; |
ef416fc2 | 2093 | fp->stream.next_out = NULL; |
fa73b229 | 2094 | fp->stream.avail_in = bytes; |
ef416fc2 | 2095 | fp->stream.avail_out = 0; |
2096 | fp->crc = crc32(0L, Z_NULL, 0); | |
2097 | ||
2098 | if (inflateInit2(&(fp->stream), -15) != Z_OK) | |
2099 | return (-1); | |
2100 | ||
2101 | fp->compressed = 1; | |
2102 | } | |
2103 | ||
2104 | if (fp->compressed) | |
2105 | { | |
2106 | /* | |
2107 | * If we have reached end-of-file, return immediately... | |
2108 | */ | |
2109 | ||
2110 | if (fp->eof) | |
2111 | return (-1); | |
2112 | ||
2113 | /* | |
2114 | * Fill the decompression buffer as needed... | |
2115 | */ | |
2116 | ||
2117 | if (fp->stream.avail_in == 0) | |
2118 | { | |
2119 | if ((bytes = cups_read(fp, (char *)fp->cbuf, sizeof(fp->cbuf))) <= 0) | |
2120 | return (-1); | |
2121 | ||
2122 | fp->stream.next_in = fp->cbuf; | |
2123 | fp->stream.avail_in = bytes; | |
2124 | } | |
2125 | ||
2126 | /* | |
2127 | * Decompress data from the buffer... | |
2128 | */ | |
2129 | ||
2130 | fp->stream.next_out = (Bytef *)fp->buf; | |
2131 | fp->stream.avail_out = sizeof(fp->buf); | |
2132 | ||
c277e2f8 MS |
2133 | status = inflate(&(fp->stream), Z_NO_FLUSH); |
2134 | ||
2135 | if (fp->stream.next_out > (Bytef *)fp->buf) | |
2136 | fp->crc = crc32(fp->crc, (Bytef *)fp->buf, | |
2137 | fp->stream.next_out - (Bytef *)fp->buf); | |
2138 | ||
2139 | if (status == Z_STREAM_END) | |
ef416fc2 | 2140 | { |
2141 | /* | |
2142 | * Read the CRC and length... | |
2143 | */ | |
2144 | ||
2145 | unsigned char trailer[8]; /* Trailer bytes */ | |
2146 | uLong tcrc; /* Trailer CRC */ | |
2147 | ||
2148 | ||
2149 | if (read(fp->fd, trailer, sizeof(trailer)) < sizeof(trailer)) | |
2150 | { | |
2151 | /* | |
2152 | * Can't get it, so mark end-of-file... | |
2153 | */ | |
2154 | ||
2155 | fp->eof = 1; | |
ef416fc2 | 2156 | } |
fa73b229 | 2157 | else |
2158 | { | |
2159 | tcrc = (((((trailer[3] << 8) | trailer[2]) << 8) | trailer[1]) << 8) | | |
2160 | trailer[0]; | |
ef416fc2 | 2161 | |
fa73b229 | 2162 | if (tcrc != fp->crc) |
2163 | { | |
2164 | /* | |
2165 | * Bad CRC, mark end-of-file... | |
2166 | */ | |
2167 | ||
e07d4801 | 2168 | DEBUG_printf(("9cups_fill: tcrc=%08x, fp->crc=%08x", |
c277e2f8 MS |
2169 | (unsigned int)tcrc, (unsigned int)fp->crc)); |
2170 | ||
fa73b229 | 2171 | fp->eof = 1; |
2172 | ||
2173 | return (-1); | |
2174 | } | |
ef416fc2 | 2175 | |
ef416fc2 | 2176 | /* |
fa73b229 | 2177 | * Otherwise, reset the compressed flag so that we re-read the |
2178 | * file header... | |
ef416fc2 | 2179 | */ |
ef416fc2 | 2180 | |
fa73b229 | 2181 | fp->compressed = 0; |
ef416fc2 | 2182 | } |
ef416fc2 | 2183 | } |
2184 | ||
2185 | bytes = sizeof(fp->buf) - fp->stream.avail_out; | |
2186 | ||
2187 | /* | |
2188 | * Return the decompressed data... | |
2189 | */ | |
2190 | ||
2191 | fp->ptr = fp->buf; | |
2192 | fp->end = fp->buf + bytes; | |
2193 | ||
fa73b229 | 2194 | if (bytes) |
2195 | return (bytes); | |
ef416fc2 | 2196 | } |
2197 | } | |
2198 | #endif /* HAVE_LIBZ */ | |
2199 | ||
2200 | /* | |
2201 | * Read a buffer's full of data... | |
2202 | */ | |
2203 | ||
2204 | if ((bytes = cups_read(fp, fp->buf, sizeof(fp->buf))) <= 0) | |
2205 | { | |
2206 | /* | |
2207 | * Can't read from file! | |
2208 | */ | |
2209 | ||
2210 | fp->eof = 1; | |
2211 | fp->ptr = fp->buf; | |
2212 | fp->end = fp->buf; | |
2213 | ||
2214 | return (-1); | |
2215 | } | |
2216 | ||
2217 | /* | |
2218 | * Return the bytes we read... | |
2219 | */ | |
2220 | ||
2221 | fp->eof = 0; | |
2222 | fp->ptr = fp->buf; | |
2223 | fp->end = fp->buf + bytes; | |
2224 | ||
2225 | return (bytes); | |
2226 | } | |
2227 | ||
2228 | ||
c7017ecc MS |
2229 | /* |
2230 | * 'cups_open()' - Safely open a file for writing. | |
2231 | * | |
2232 | * We don't allow appending to directories or files that are hard-linked or | |
2233 | * symlinked. | |
2234 | */ | |
2235 | ||
2236 | static int /* O - File descriptor or -1 otherwise */ | |
2237 | cups_open(const char *filename, /* I - Filename */ | |
2238 | int mode) /* I - Open mode */ | |
2239 | { | |
2240 | int fd; /* File descriptor */ | |
2241 | struct stat fileinfo; /* File information */ | |
2242 | #ifndef WIN32 | |
2243 | struct stat linkinfo; /* Link information */ | |
2244 | #endif /* !WIN32 */ | |
2245 | ||
2246 | ||
2247 | /* | |
2248 | * Open the file... | |
2249 | */ | |
2250 | ||
2251 | if ((fd = open(filename, mode, 0666)) < 0) | |
2252 | return (-1); | |
2253 | ||
2254 | /* | |
2255 | * Then verify that the file descriptor doesn't point to a directory or hard- | |
2256 | * linked file. | |
2257 | */ | |
2258 | ||
2259 | if (fstat(fd, &fileinfo)) | |
2260 | { | |
2261 | close(fd); | |
2262 | return (-1); | |
2263 | } | |
2264 | ||
2265 | if (fileinfo.st_nlink != 1) | |
2266 | { | |
2267 | close(fd); | |
2268 | errno = EPERM; | |
2269 | return (-1); | |
2270 | } | |
2271 | ||
2272 | #ifdef WIN32 | |
2273 | if (fileinfo.st_mode & _S_IFDIR) | |
2274 | #else | |
2275 | if (S_ISDIR(fileinfo.st_mode)) | |
2276 | #endif /* WIN32 */ | |
2277 | { | |
2278 | close(fd); | |
2279 | errno = EISDIR; | |
2280 | return (-1); | |
2281 | } | |
2282 | ||
2283 | #ifndef WIN32 | |
2284 | /* | |
2285 | * Then use lstat to determine whether the filename is a symlink... | |
2286 | */ | |
2287 | ||
2288 | if (lstat(filename, &linkinfo)) | |
2289 | { | |
2290 | close(fd); | |
2291 | return (-1); | |
2292 | } | |
2293 | ||
2294 | if (S_ISLNK(linkinfo.st_mode) || | |
2295 | fileinfo.st_dev != linkinfo.st_dev || | |
2296 | fileinfo.st_ino != linkinfo.st_ino || | |
2297 | #ifdef HAVE_ST_GEN | |
2298 | fileinfo.st_gen != linkinfo.st_gen || | |
2299 | #endif /* HAVE_ST_GEN */ | |
2300 | fileinfo.st_nlink != linkinfo.st_nlink || | |
2301 | fileinfo.st_mode != linkinfo.st_mode) | |
2302 | { | |
2303 | /* | |
2304 | * Yes, don't allow! | |
2305 | */ | |
2306 | ||
2307 | close(fd); | |
2308 | errno = EPERM; | |
2309 | return (-1); | |
2310 | } | |
2311 | #endif /* !WIN32 */ | |
2312 | ||
2313 | return (fd); | |
2314 | } | |
2315 | ||
2316 | ||
ef416fc2 | 2317 | /* |
2318 | * 'cups_read()' - Read from a file descriptor. | |
2319 | */ | |
2320 | ||
2321 | static ssize_t /* O - Number of bytes read or -1 */ | |
2322 | cups_read(cups_file_t *fp, /* I - CUPS file */ | |
2323 | char *buf, /* I - Buffer */ | |
2324 | size_t bytes) /* I - Number bytes */ | |
2325 | { | |
2326 | ssize_t total; /* Total bytes read */ | |
2327 | ||
2328 | ||
e07d4801 | 2329 | DEBUG_printf(("7cups_read(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
2330 | CUPS_LLCAST bytes)); |
2331 | ||
ef416fc2 | 2332 | /* |
2333 | * Loop until we read at least 0 bytes... | |
2334 | */ | |
2335 | ||
2336 | for (;;) | |
2337 | { | |
b86bc4cf | 2338 | #ifdef WIN32 |
2339 | if (fp->mode == 's') | |
2340 | total = (ssize_t)recv(fp->fd, buf, (unsigned)bytes, 0); | |
2341 | else | |
2342 | total = (ssize_t)read(fp->fd, buf, (unsigned)bytes); | |
2343 | #else | |
ef416fc2 | 2344 | if (fp->mode == 's') |
2345 | total = recv(fp->fd, buf, bytes, 0); | |
2346 | else | |
2347 | total = read(fp->fd, buf, bytes); | |
b86bc4cf | 2348 | #endif /* WIN32 */ |
ef416fc2 | 2349 | |
e07d4801 | 2350 | DEBUG_printf(("9cups_read: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
634763e8 | 2351 | |
ef416fc2 | 2352 | if (total >= 0) |
2353 | break; | |
2354 | ||
2355 | /* | |
2356 | * Reads can be interrupted by signals and unavailable resources... | |
2357 | */ | |
2358 | ||
2359 | if (errno == EAGAIN || errno == EINTR) | |
2360 | continue; | |
2361 | else | |
2362 | return (-1); | |
2363 | } | |
2364 | ||
2365 | /* | |
2366 | * Return the total number of bytes read... | |
2367 | */ | |
2368 | ||
2369 | return (total); | |
2370 | } | |
2371 | ||
2372 | ||
2373 | /* | |
2374 | * 'cups_write()' - Write to a file descriptor. | |
2375 | */ | |
2376 | ||
2377 | static ssize_t /* O - Number of bytes written or -1 */ | |
2378 | cups_write(cups_file_t *fp, /* I - CUPS file */ | |
2379 | const char *buf, /* I - Buffer */ | |
2380 | size_t bytes) /* I - Number bytes */ | |
2381 | { | |
2abf387c | 2382 | size_t total; /* Total bytes written */ |
2383 | ssize_t count; /* Count this time */ | |
ef416fc2 | 2384 | |
2385 | ||
e07d4801 | 2386 | DEBUG_printf(("7cups_write(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2387 | CUPS_LLCAST bytes)); |
ecdc0628 | 2388 | |
ef416fc2 | 2389 | /* |
2390 | * Loop until all bytes are written... | |
2391 | */ | |
2392 | ||
2393 | total = 0; | |
2394 | while (bytes > 0) | |
2395 | { | |
b86bc4cf | 2396 | #ifdef WIN32 |
2397 | if (fp->mode == 's') | |
2398 | count = (ssize_t)send(fp->fd, buf, (unsigned)bytes, 0); | |
2399 | else | |
2400 | count = (ssize_t)write(fp->fd, buf, (unsigned)bytes); | |
2401 | #else | |
ef416fc2 | 2402 | if (fp->mode == 's') |
2403 | count = send(fp->fd, buf, bytes, 0); | |
2404 | else | |
2405 | count = write(fp->fd, buf, bytes); | |
b86bc4cf | 2406 | #endif /* WIN32 */ |
ef416fc2 | 2407 | |
e07d4801 | 2408 | DEBUG_printf(("9cups_write: count=" CUPS_LLFMT, CUPS_LLCAST count)); |
634763e8 | 2409 | |
ef416fc2 | 2410 | if (count < 0) |
2411 | { | |
2412 | /* | |
2413 | * Writes can be interrupted by signals and unavailable resources... | |
2414 | */ | |
2415 | ||
2416 | if (errno == EAGAIN || errno == EINTR) | |
2417 | continue; | |
2418 | else | |
2419 | return (-1); | |
2420 | } | |
2421 | ||
2422 | /* | |
2423 | * Update the counts for the last write call... | |
2424 | */ | |
2425 | ||
2426 | bytes -= count; | |
2427 | total += count; | |
2428 | buf += count; | |
2429 | } | |
2430 | ||
2431 | /* | |
2432 | * Return the total number of bytes written... | |
2433 | */ | |
2434 | ||
b86bc4cf | 2435 | return ((ssize_t)total); |
ef416fc2 | 2436 | } |
2437 | ||
2438 | ||
2439 | /* | |
75bd9771 | 2440 | * End of "$Id: file.c 7672 2008-06-18 22:03:02Z mike $". |
ef416fc2 | 2441 | */ |