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