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Commit | Line | Data |
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ef416fc2 | 1 | /* |
f2d18633 | 2 | * "$Id$" |
ef416fc2 | 3 | * |
da003234 | 4 | * File functions for CUPS. |
ef416fc2 | 5 | * |
da003234 MS |
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. | |
ef416fc2 | 10 | * |
7e86f2f6 | 11 | * Copyright 2007-2014 by Apple Inc. |
da003234 | 12 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
ef416fc2 | 13 | * |
da003234 MS |
14 | * These coded instructions, statements, and computer programs are the |
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 | ||
21 | /* | |
22 | * Include necessary headers... | |
23 | */ | |
24 | ||
b9faaae1 | 25 | #include "file-private.h" |
c7017ecc MS |
26 | #include <sys/stat.h> |
27 | #include <sys/types.h> | |
ef416fc2 | 28 | |
29 | ||
30 | /* | |
31 | * Local functions... | |
32 | */ | |
33 | ||
34 | #ifdef HAVE_LIBZ | |
35 | static ssize_t cups_compress(cups_file_t *fp, const char *buf, size_t bytes); | |
36 | #endif /* HAVE_LIBZ */ | |
37 | static ssize_t cups_fill(cups_file_t *fp); | |
c7017ecc | 38 | static int cups_open(const char *filename, int mode); |
ef416fc2 | 39 | static ssize_t cups_read(cups_file_t *fp, char *buf, size_t bytes); |
40 | static ssize_t cups_write(cups_file_t *fp, const char *buf, size_t bytes); | |
41 | ||
42 | ||
83e08001 | 43 | #ifndef WIN32 |
22c9029b MS |
44 | /* |
45 | * '_cupsFileCheck()' - Check the permissions of the given filename. | |
46 | */ | |
47 | ||
48 | _cups_fc_result_t /* O - Check result */ | |
49 | _cupsFileCheck( | |
50 | const char *filename, /* I - Filename to check */ | |
51 | _cups_fc_filetype_t filetype, /* I - Type of file checks? */ | |
52 | int dorootchecks, /* I - Check for root permissions? */ | |
53 | _cups_fc_func_t cb, /* I - Callback function */ | |
54 | void *context) /* I - Context pointer for callback */ | |
f228370c | 55 | |
22c9029b MS |
56 | { |
57 | struct stat fileinfo; /* File information */ | |
58 | char message[1024], /* Message string */ | |
59 | temp[1024], /* Parent directory filename */ | |
60 | *ptr; /* Pointer into parent directory */ | |
61 | _cups_fc_result_t result; /* Check result */ | |
62 | ||
63 | ||
88f9aafc MS |
64 | /* |
65 | * Does the filename contain a relative path ("../")? | |
66 | */ | |
67 | ||
68 | if (strstr(filename, "../")) | |
69 | { | |
70 | /* | |
71 | * Yes, fail it! | |
72 | */ | |
73 | ||
74 | result = _CUPS_FILE_CHECK_RELATIVE_PATH; | |
75 | goto finishup; | |
76 | } | |
77 | ||
22c9029b MS |
78 | /* |
79 | * Does the program even exist and is it accessible? | |
80 | */ | |
81 | ||
82 | if (stat(filename, &fileinfo)) | |
83 | { | |
84 | /* | |
85 | * Nope... | |
86 | */ | |
87 | ||
88 | result = _CUPS_FILE_CHECK_MISSING; | |
89 | goto finishup; | |
90 | } | |
91 | ||
92 | /* | |
93 | * Check the execute bit... | |
94 | */ | |
95 | ||
96 | result = _CUPS_FILE_CHECK_OK; | |
97 | ||
98 | switch (filetype) | |
99 | { | |
100 | case _CUPS_FILE_CHECK_DIRECTORY : | |
101 | if (!S_ISDIR(fileinfo.st_mode)) | |
102 | result = _CUPS_FILE_CHECK_WRONG_TYPE; | |
103 | break; | |
104 | ||
105 | default : | |
106 | if (!S_ISREG(fileinfo.st_mode)) | |
107 | result = _CUPS_FILE_CHECK_WRONG_TYPE; | |
108 | break; | |
109 | } | |
110 | ||
111 | if (result) | |
112 | goto finishup; | |
113 | ||
114 | /* | |
115 | * Are we doing root checks? | |
116 | */ | |
117 | ||
118 | if (!dorootchecks) | |
119 | { | |
120 | /* | |
121 | * Nope, so anything (else) goes... | |
122 | */ | |
123 | ||
124 | goto finishup; | |
125 | } | |
126 | ||
127 | /* | |
128 | * Verify permission of the file itself: | |
129 | * | |
130 | * 1. Must be owned by root | |
85dda01c | 131 | * 2. Must not be writable by group |
22c9029b MS |
132 | * 3. Must not be setuid |
133 | * 4. Must not be writable by others | |
134 | */ | |
135 | ||
136 | if (fileinfo.st_uid || /* 1. Must be owned by root */ | |
85dda01c | 137 | (fileinfo.st_mode & S_IWGRP) || /* 2. Must not be writable by group */ |
22c9029b MS |
138 | (fileinfo.st_mode & S_ISUID) || /* 3. Must not be setuid */ |
139 | (fileinfo.st_mode & S_IWOTH)) /* 4. Must not be writable by others */ | |
140 | { | |
141 | result = _CUPS_FILE_CHECK_PERMISSIONS; | |
142 | goto finishup; | |
143 | } | |
144 | ||
145 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY || | |
146 | filetype == _CUPS_FILE_CHECK_FILE_ONLY) | |
147 | goto finishup; | |
148 | ||
149 | /* | |
150 | * Now check the containing directory... | |
151 | */ | |
152 | ||
153 | strlcpy(temp, filename, sizeof(temp)); | |
154 | if ((ptr = strrchr(temp, '/')) != NULL) | |
155 | { | |
156 | if (ptr == temp) | |
157 | ptr[1] = '\0'; | |
158 | else | |
159 | *ptr = '\0'; | |
160 | } | |
161 | ||
162 | if (stat(temp, &fileinfo)) | |
163 | { | |
164 | /* | |
165 | * Doesn't exist?!? | |
166 | */ | |
167 | ||
168 | result = _CUPS_FILE_CHECK_MISSING; | |
169 | filetype = _CUPS_FILE_CHECK_DIRECTORY; | |
170 | filename = temp; | |
171 | ||
172 | goto finishup; | |
173 | } | |
174 | ||
175 | if (fileinfo.st_uid || /* 1. Must be owned by root */ | |
85dda01c | 176 | (fileinfo.st_mode & S_IWGRP) || /* 2. Must not be writable by group */ |
22c9029b MS |
177 | (fileinfo.st_mode & S_ISUID) || /* 3. Must not be setuid */ |
178 | (fileinfo.st_mode & S_IWOTH)) /* 4. Must not be writable by others */ | |
179 | { | |
180 | result = _CUPS_FILE_CHECK_PERMISSIONS; | |
181 | filetype = _CUPS_FILE_CHECK_DIRECTORY; | |
182 | filename = temp; | |
183 | } | |
184 | ||
185 | /* | |
186 | * Common return point... | |
187 | */ | |
188 | ||
189 | finishup: | |
190 | ||
191 | if (cb) | |
192 | { | |
193 | cups_lang_t *lang = cupsLangDefault(); | |
194 | /* Localization information */ | |
195 | ||
196 | switch (result) | |
197 | { | |
198 | case _CUPS_FILE_CHECK_OK : | |
199 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
200 | snprintf(message, sizeof(message), | |
201 | _cupsLangString(lang, _("Directory \"%s\" permissions OK " | |
202 | "(0%o/uid=%d/gid=%d).")), | |
203 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
204 | (int)fileinfo.st_gid); | |
205 | else | |
206 | snprintf(message, sizeof(message), | |
207 | _cupsLangString(lang, _("File \"%s\" permissions OK " | |
208 | "(0%o/uid=%d/gid=%d).")), | |
209 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
210 | (int)fileinfo.st_gid); | |
211 | break; | |
212 | ||
213 | case _CUPS_FILE_CHECK_MISSING : | |
214 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
215 | snprintf(message, sizeof(message), | |
216 | _cupsLangString(lang, _("Directory \"%s\" not available: " | |
217 | "%s")), | |
218 | filename, strerror(errno)); | |
219 | else | |
220 | snprintf(message, sizeof(message), | |
221 | _cupsLangString(lang, _("File \"%s\" not available: %s")), | |
222 | filename, strerror(errno)); | |
223 | break; | |
224 | ||
225 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
226 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
227 | snprintf(message, sizeof(message), | |
228 | _cupsLangString(lang, _("Directory \"%s\" has insecure " | |
229 | "permissions " | |
230 | "(0%o/uid=%d/gid=%d).")), | |
231 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
232 | (int)fileinfo.st_gid); | |
233 | else | |
234 | snprintf(message, sizeof(message), | |
235 | _cupsLangString(lang, _("File \"%s\" has insecure " | |
236 | "permissions " | |
237 | "(0%o/uid=%d/gid=%d).")), | |
238 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
239 | (int)fileinfo.st_gid); | |
240 | break; | |
241 | ||
242 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
243 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
244 | snprintf(message, sizeof(message), | |
245 | _cupsLangString(lang, _("Directory \"%s\" is a file.")), | |
246 | filename); | |
247 | else | |
248 | snprintf(message, sizeof(message), | |
249 | _cupsLangString(lang, _("File \"%s\" is a directory.")), | |
250 | filename); | |
251 | break; | |
88f9aafc MS |
252 | |
253 | case _CUPS_FILE_CHECK_RELATIVE_PATH : | |
254 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
255 | snprintf(message, sizeof(message), | |
256 | _cupsLangString(lang, _("Directory \"%s\" contains a " | |
257 | "relative path.")), filename); | |
258 | else | |
259 | snprintf(message, sizeof(message), | |
260 | _cupsLangString(lang, _("File \"%s\" contains a relative " | |
261 | "path.")), filename); | |
262 | break; | |
22c9029b MS |
263 | } |
264 | ||
265 | (*cb)(context, result, message); | |
266 | } | |
267 | ||
268 | return (result); | |
269 | } | |
270 | ||
271 | ||
272 | /* | |
273 | * '_cupsFileCheckFilter()' - Report file check results as CUPS filter messages. | |
274 | */ | |
275 | ||
276 | void | |
277 | _cupsFileCheckFilter( | |
278 | void *context, /* I - Context pointer (unused) */ | |
279 | _cups_fc_result_t result, /* I - Result code */ | |
280 | const char *message) /* I - Message text */ | |
281 | { | |
282 | const char *prefix; /* Messaging prefix */ | |
283 | ||
284 | ||
321d8d57 MS |
285 | (void)context; |
286 | ||
22c9029b MS |
287 | switch (result) |
288 | { | |
289 | case _CUPS_FILE_CHECK_OK : | |
290 | prefix = "DEBUG2"; | |
291 | break; | |
292 | ||
293 | case _CUPS_FILE_CHECK_MISSING : | |
294 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
295 | prefix = "ERROR"; | |
296 | fputs("STATE: +cups-missing-filter-warning\n", stderr); | |
297 | break; | |
298 | ||
299 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
88f9aafc | 300 | case _CUPS_FILE_CHECK_RELATIVE_PATH : |
22c9029b MS |
301 | prefix = "ERROR"; |
302 | fputs("STATE: +cups-insecure-filter-warning\n", stderr); | |
303 | break; | |
304 | } | |
305 | ||
306 | fprintf(stderr, "%s: %s\n", prefix, message); | |
307 | } | |
83e08001 | 308 | #endif /* !WIN32 */ |
22c9029b MS |
309 | |
310 | ||
ef416fc2 | 311 | /* |
312 | * 'cupsFileClose()' - Close a CUPS file. | |
5a738aea | 313 | * |
f3c17241 | 314 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 315 | */ |
316 | ||
317 | int /* O - 0 on success, -1 on error */ | |
318 | cupsFileClose(cups_file_t *fp) /* I - CUPS file */ | |
319 | { | |
320 | int fd; /* File descriptor */ | |
321 | char mode; /* Open mode */ | |
322 | int status; /* Return status */ | |
80ca4592 | 323 | int is_stdio; /* Is a stdio file? */ |
ef416fc2 | 324 | |
325 | ||
e07d4801 | 326 | DEBUG_printf(("cupsFileClose(fp=%p)", fp)); |
ef416fc2 | 327 | |
328 | /* | |
329 | * Range check... | |
330 | */ | |
331 | ||
332 | if (!fp) | |
333 | return (-1); | |
334 | ||
335 | /* | |
336 | * Flush pending write data... | |
337 | */ | |
338 | ||
339 | if (fp->mode == 'w') | |
340 | status = cupsFileFlush(fp); | |
341 | else | |
342 | status = 0; | |
343 | ||
344 | #ifdef HAVE_LIBZ | |
345 | if (fp->compressed && status >= 0) | |
346 | { | |
347 | if (fp->mode == 'r') | |
348 | { | |
349 | /* | |
350 | * Free decompression data... | |
351 | */ | |
352 | ||
353 | inflateEnd(&fp->stream); | |
354 | } | |
355 | else | |
356 | { | |
357 | /* | |
358 | * Flush any remaining compressed data... | |
359 | */ | |
360 | ||
361 | unsigned char trailer[8]; /* Trailer CRC and length */ | |
362 | int done; /* Done writing... */ | |
363 | ||
364 | ||
365 | fp->stream.avail_in = 0; | |
366 | ||
367 | for (done = 0;;) | |
368 | { | |
369 | if (fp->stream.next_out > fp->cbuf) | |
370 | { | |
371 | if (cups_write(fp, (char *)fp->cbuf, | |
7e86f2f6 | 372 | (size_t)(fp->stream.next_out - fp->cbuf)) < 0) |
ef416fc2 | 373 | status = -1; |
374 | ||
375 | fp->stream.next_out = fp->cbuf; | |
376 | fp->stream.avail_out = sizeof(fp->cbuf); | |
377 | } | |
378 | ||
379 | if (done || status < 0) | |
380 | break; | |
381 | ||
382 | done = deflate(&fp->stream, Z_FINISH) == Z_STREAM_END && | |
383 | fp->stream.next_out == fp->cbuf; | |
384 | } | |
385 | ||
386 | /* | |
387 | * Write the CRC and length... | |
388 | */ | |
389 | ||
7e86f2f6 MS |
390 | trailer[0] = (unsigned char)fp->crc; |
391 | trailer[1] = (unsigned char)(fp->crc >> 8); | |
392 | trailer[2] = (unsigned char)(fp->crc >> 16); | |
393 | trailer[3] = (unsigned char)(fp->crc >> 24); | |
394 | trailer[4] = (unsigned char)fp->pos; | |
395 | trailer[5] = (unsigned char)(fp->pos >> 8); | |
396 | trailer[6] = (unsigned char)(fp->pos >> 16); | |
397 | trailer[7] = (unsigned char)(fp->pos >> 24); | |
ef416fc2 | 398 | |
399 | if (cups_write(fp, (char *)trailer, 8) < 0) | |
400 | status = -1; | |
401 | ||
402 | /* | |
403 | * Free all memory used by the compression stream... | |
404 | */ | |
405 | ||
406 | deflateEnd(&(fp->stream)); | |
407 | } | |
408 | } | |
409 | #endif /* HAVE_LIBZ */ | |
410 | ||
411 | /* | |
412 | * Save the file descriptor we used and free memory... | |
413 | */ | |
414 | ||
80ca4592 | 415 | fd = fp->fd; |
416 | mode = fp->mode; | |
417 | is_stdio = fp->is_stdio; | |
ef416fc2 | 418 | |
75bd9771 MS |
419 | if (fp->printf_buffer) |
420 | free(fp->printf_buffer); | |
421 | ||
ef416fc2 | 422 | free(fp); |
423 | ||
424 | /* | |
425 | * Close the file, returning the close status... | |
426 | */ | |
427 | ||
428 | if (mode == 's') | |
429 | { | |
87e98392 | 430 | if (httpAddrClose(NULL, fd) < 0) |
ef416fc2 | 431 | status = -1; |
432 | } | |
80ca4592 | 433 | else if (!is_stdio) |
ef416fc2 | 434 | { |
435 | if (close(fd) < 0) | |
436 | status = -1; | |
437 | } | |
438 | ||
439 | return (status); | |
440 | } | |
441 | ||
442 | ||
443 | /* | |
444 | * 'cupsFileCompression()' - Return whether a file is compressed. | |
5a738aea | 445 | * |
f3c17241 | 446 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 447 | */ |
448 | ||
5a738aea | 449 | int /* O - @code CUPS_FILE_NONE@ or @code CUPS_FILE_GZIP@ */ |
ef416fc2 | 450 | cupsFileCompression(cups_file_t *fp) /* I - CUPS file */ |
451 | { | |
80ca4592 | 452 | return (fp ? fp->compressed : CUPS_FILE_NONE); |
ef416fc2 | 453 | } |
454 | ||
455 | ||
456 | /* | |
457 | * 'cupsFileEOF()' - Return the end-of-file status. | |
5a738aea | 458 | * |
f3c17241 | 459 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 460 | */ |
461 | ||
5a738aea | 462 | int /* O - 1 on end of file, 0 otherwise */ |
ef416fc2 | 463 | cupsFileEOF(cups_file_t *fp) /* I - CUPS file */ |
464 | { | |
80ca4592 | 465 | return (fp ? fp->eof : 1); |
ef416fc2 | 466 | } |
467 | ||
468 | ||
fa73b229 | 469 | /* |
470 | * 'cupsFileFind()' - Find a file using the specified path. | |
471 | * | |
472 | * This function allows the paths in the path string to be separated by | |
473 | * colons (UNIX standard) or semicolons (Windows standard) and stores the | |
474 | * result in the buffer supplied. If the file cannot be found in any of | |
5a738aea MS |
475 | * the supplied paths, @code NULL@ is returned. A @code NULL@ path only |
476 | * matches the current directory. | |
477 | * | |
f3c17241 | 478 | * @since CUPS 1.2/OS X 10.5@ |
fa73b229 | 479 | */ |
480 | ||
5a738aea | 481 | const char * /* O - Full path to file or @code NULL@ if not found */ |
fa73b229 | 482 | cupsFileFind(const char *filename, /* I - File to find */ |
483 | const char *path, /* I - Colon/semicolon-separated path */ | |
4400e98d | 484 | int executable, /* I - 1 = executable files, 0 = any file/dir */ |
485 | char *buffer, /* I - Filename buffer */ | |
fa73b229 | 486 | int bufsize) /* I - Size of filename buffer */ |
487 | { | |
488 | char *bufptr, /* Current position in buffer */ | |
489 | *bufend; /* End of buffer */ | |
490 | ||
491 | ||
492 | /* | |
493 | * Range check input... | |
494 | */ | |
495 | ||
e07d4801 MS |
496 | DEBUG_printf(("cupsFileFind(filename=\"%s\", path=\"%s\", executable=%d, " |
497 | "buffer=%p, bufsize=%d)", filename, path, executable, buffer, | |
498 | bufsize)); | |
499 | ||
fa73b229 | 500 | if (!filename || !buffer || bufsize < 2) |
501 | return (NULL); | |
502 | ||
503 | if (!path) | |
504 | { | |
505 | /* | |
506 | * No path, so check current directory... | |
507 | */ | |
508 | ||
509 | if (!access(filename, 0)) | |
510 | { | |
07623986 | 511 | strlcpy(buffer, filename, (size_t)bufsize); |
fa73b229 | 512 | return (buffer); |
513 | } | |
514 | else | |
515 | return (NULL); | |
516 | } | |
517 | ||
518 | /* | |
519 | * Now check each path and return the first match... | |
520 | */ | |
521 | ||
522 | bufend = buffer + bufsize - 1; | |
523 | bufptr = buffer; | |
524 | ||
525 | while (*path) | |
526 | { | |
b86bc4cf | 527 | #ifdef WIN32 |
528 | if (*path == ';' || (*path == ':' && ((bufptr - buffer) > 1 || !isalpha(buffer[0] & 255)))) | |
529 | #else | |
fa73b229 | 530 | if (*path == ';' || *path == ':') |
b86bc4cf | 531 | #endif /* WIN32 */ |
fa73b229 | 532 | { |
533 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
534 | *bufptr++ = '/'; | |
535 | ||
07623986 | 536 | strlcpy(bufptr, filename, (size_t)(bufend - bufptr)); |
fa73b229 | 537 | |
4400e98d | 538 | #ifdef WIN32 |
fa73b229 | 539 | if (!access(buffer, 0)) |
4400e98d | 540 | #else |
541 | if (!access(buffer, executable ? X_OK : 0)) | |
542 | #endif /* WIN32 */ | |
b86bc4cf | 543 | { |
e07d4801 | 544 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 545 | return (buffer); |
b86bc4cf | 546 | } |
fa73b229 | 547 | |
548 | bufptr = buffer; | |
549 | } | |
550 | else if (bufptr < bufend) | |
551 | *bufptr++ = *path; | |
552 | ||
553 | path ++; | |
554 | } | |
555 | ||
556 | /* | |
557 | * Check the last path... | |
558 | */ | |
559 | ||
560 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
561 | *bufptr++ = '/'; | |
562 | ||
07623986 | 563 | strlcpy(bufptr, filename, (size_t)(bufend - bufptr)); |
fa73b229 | 564 | |
565 | if (!access(buffer, 0)) | |
b86bc4cf | 566 | { |
e07d4801 | 567 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 568 | return (buffer); |
b86bc4cf | 569 | } |
fa73b229 | 570 | else |
b86bc4cf | 571 | { |
e07d4801 | 572 | DEBUG_puts("1cupsFileFind: Returning NULL"); |
fa73b229 | 573 | return (NULL); |
b86bc4cf | 574 | } |
fa73b229 | 575 | } |
576 | ||
577 | ||
ef416fc2 | 578 | /* |
579 | * 'cupsFileFlush()' - Flush pending output. | |
5a738aea | 580 | * |
f3c17241 | 581 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 582 | */ |
583 | ||
584 | int /* O - 0 on success, -1 on error */ | |
585 | cupsFileFlush(cups_file_t *fp) /* I - CUPS file */ | |
586 | { | |
2abf387c | 587 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 588 | |
589 | ||
e07d4801 | 590 | DEBUG_printf(("cupsFileFlush(fp=%p)", fp)); |
ef416fc2 | 591 | |
592 | /* | |
593 | * Range check input... | |
594 | */ | |
595 | ||
596 | if (!fp || fp->mode != 'w') | |
597 | { | |
e07d4801 | 598 | DEBUG_puts("1cupsFileFlush: Attempt to flush a read-only file..."); |
ef416fc2 | 599 | return (-1); |
600 | } | |
601 | ||
b86bc4cf | 602 | bytes = (ssize_t)(fp->ptr - fp->buf); |
ef416fc2 | 603 | |
e07d4801 | 604 | DEBUG_printf(("2cupsFileFlush: Flushing " CUPS_LLFMT " bytes...", |
634763e8 | 605 | CUPS_LLCAST bytes)); |
ecdc0628 | 606 | |
ef416fc2 | 607 | if (bytes > 0) |
608 | { | |
609 | #ifdef HAVE_LIBZ | |
610 | if (fp->compressed) | |
7e86f2f6 | 611 | bytes = cups_compress(fp, fp->buf, (size_t)bytes); |
ef416fc2 | 612 | else |
613 | #endif /* HAVE_LIBZ */ | |
7e86f2f6 | 614 | bytes = cups_write(fp, fp->buf, (size_t)bytes); |
ef416fc2 | 615 | |
616 | if (bytes < 0) | |
617 | return (-1); | |
618 | ||
619 | fp->ptr = fp->buf; | |
620 | } | |
f14324a7 | 621 | |
ef416fc2 | 622 | return (0); |
623 | } | |
624 | ||
625 | ||
626 | /* | |
627 | * 'cupsFileGetChar()' - Get a single character from a file. | |
5a738aea | 628 | * |
f3c17241 | 629 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 630 | */ |
631 | ||
5a738aea | 632 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 633 | cupsFileGetChar(cups_file_t *fp) /* I - CUPS file */ |
634 | { | |
635 | /* | |
636 | * Range check input... | |
637 | */ | |
638 | ||
639 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
b86bc4cf | 640 | { |
f14324a7 | 641 | DEBUG_puts("5cupsFileGetChar: Bad arguments!"); |
ef416fc2 | 642 | return (-1); |
b86bc4cf | 643 | } |
ef416fc2 | 644 | |
645 | /* | |
646 | * If the input buffer is empty, try to read more data... | |
647 | */ | |
648 | ||
649 | if (fp->ptr >= fp->end) | |
650 | if (cups_fill(fp) < 0) | |
b86bc4cf | 651 | { |
f14324a7 | 652 | DEBUG_puts("5cupsFileGetChar: Unable to fill buffer!"); |
ef416fc2 | 653 | return (-1); |
b86bc4cf | 654 | } |
ef416fc2 | 655 | |
656 | /* | |
657 | * Return the next character in the buffer... | |
658 | */ | |
659 | ||
f14324a7 | 660 | DEBUG_printf(("5cupsFileGetChar: Returning %d...", *(fp->ptr) & 255)); |
b86bc4cf | 661 | |
634763e8 MS |
662 | fp->pos ++; |
663 | ||
f14324a7 | 664 | DEBUG_printf(("6cupsFileGetChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 665 | |
ef416fc2 | 666 | return (*(fp->ptr)++ & 255); |
667 | } | |
668 | ||
669 | ||
670 | /* | |
22c9029b | 671 | * 'cupsFileGetConf()' - Get a line from a configuration file. |
5a738aea | 672 | * |
f3c17241 | 673 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 674 | */ |
675 | ||
5a738aea | 676 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 677 | cupsFileGetConf(cups_file_t *fp, /* I - CUPS file */ |
678 | char *buf, /* O - String buffer */ | |
679 | size_t buflen, /* I - Size of string buffer */ | |
680 | char **value, /* O - Pointer to value */ | |
681 | int *linenum) /* IO - Current line number */ | |
682 | { | |
683 | char *ptr; /* Pointer into line */ | |
684 | ||
685 | ||
686 | /* | |
687 | * Range check input... | |
688 | */ | |
689 | ||
e07d4801 MS |
690 | DEBUG_printf(("2cupsFileGetConf(fp=%p, buf=%p, buflen=" CUPS_LLFMT |
691 | ", value=%p, linenum=%p)", fp, buf, CUPS_LLCAST buflen, | |
634763e8 MS |
692 | value, linenum)); |
693 | ||
ef416fc2 | 694 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || |
695 | !buf || buflen < 2 || !value) | |
696 | { | |
697 | if (value) | |
698 | *value = NULL; | |
699 | ||
700 | return (NULL); | |
701 | } | |
702 | ||
703 | /* | |
704 | * Read the next non-comment line... | |
705 | */ | |
706 | ||
707 | *value = NULL; | |
f7deaa1a | 708 | |
ef416fc2 | 709 | while (cupsFileGets(fp, buf, buflen)) |
710 | { | |
711 | (*linenum) ++; | |
712 | ||
713 | /* | |
714 | * Strip any comments... | |
715 | */ | |
716 | ||
717 | if ((ptr = strchr(buf, '#')) != NULL) | |
718 | { | |
f7deaa1a | 719 | if (ptr > buf && ptr[-1] == '\\') |
ef416fc2 | 720 | { |
f7deaa1a | 721 | // Unquote the #... |
722 | _cups_strcpy(ptr - 1, ptr); | |
ef416fc2 | 723 | } |
f7deaa1a | 724 | else |
725 | { | |
726 | // Strip the comment and any trailing whitespace... | |
727 | while (ptr > buf) | |
728 | { | |
7cf5915e | 729 | if (!_cups_isspace(ptr[-1])) |
f7deaa1a | 730 | break; |
731 | ||
732 | ptr --; | |
733 | } | |
ef416fc2 | 734 | |
f7deaa1a | 735 | *ptr = '\0'; |
736 | } | |
ef416fc2 | 737 | } |
738 | ||
739 | /* | |
740 | * Strip leading whitespace... | |
741 | */ | |
742 | ||
7cf5915e | 743 | for (ptr = buf; _cups_isspace(*ptr); ptr ++); |
ef416fc2 | 744 | |
745 | if (ptr > buf) | |
746 | _cups_strcpy(buf, ptr); | |
747 | ||
748 | /* | |
749 | * See if there is anything left... | |
750 | */ | |
751 | ||
752 | if (buf[0]) | |
753 | { | |
754 | /* | |
755 | * Yes, grab any value and return... | |
756 | */ | |
757 | ||
758 | for (ptr = buf; *ptr; ptr ++) | |
7cf5915e | 759 | if (_cups_isspace(*ptr)) |
ef416fc2 | 760 | break; |
761 | ||
762 | if (*ptr) | |
763 | { | |
764 | /* | |
765 | * Have a value, skip any other spaces... | |
766 | */ | |
767 | ||
7cf5915e | 768 | while (_cups_isspace(*ptr)) |
ef416fc2 | 769 | *ptr++ = '\0'; |
770 | ||
771 | if (*ptr) | |
772 | *value = ptr; | |
773 | ||
774 | /* | |
775 | * Strip trailing whitespace and > for lines that begin with <... | |
776 | */ | |
777 | ||
778 | ptr += strlen(ptr) - 1; | |
779 | ||
780 | if (buf[0] == '<' && *ptr == '>') | |
781 | *ptr-- = '\0'; | |
782 | else if (buf[0] == '<' && *ptr != '>') | |
783 | { | |
784 | /* | |
785 | * Syntax error... | |
786 | */ | |
787 | ||
788 | *value = NULL; | |
789 | return (buf); | |
790 | } | |
791 | ||
7cf5915e | 792 | while (ptr > *value && _cups_isspace(*ptr)) |
ef416fc2 | 793 | *ptr-- = '\0'; |
794 | } | |
795 | ||
796 | /* | |
797 | * Return the line... | |
798 | */ | |
799 | ||
800 | return (buf); | |
801 | } | |
802 | } | |
803 | ||
804 | return (NULL); | |
805 | } | |
806 | ||
807 | ||
80ca4592 | 808 | /* |
809 | * 'cupsFileGetLine()' - Get a CR and/or LF-terminated line that may | |
810 | * contain binary data. | |
811 | * | |
5a738aea MS |
812 | * This function differs from @link cupsFileGets@ in that the trailing CR |
813 | * and LF are preserved, as is any binary data on the line. The buffer is | |
814 | * nul-terminated, however you should use the returned length to determine | |
80ca4592 | 815 | * the number of bytes on the line. |
5a738aea | 816 | * |
f3c17241 | 817 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 818 | */ |
819 | ||
5a738aea | 820 | size_t /* O - Number of bytes on line or 0 on end of file */ |
80ca4592 | 821 | cupsFileGetLine(cups_file_t *fp, /* I - File to read from */ |
822 | char *buf, /* I - Buffer */ | |
823 | size_t buflen) /* I - Size of buffer */ | |
824 | { | |
825 | int ch; /* Character from file */ | |
826 | char *ptr, /* Current position in line buffer */ | |
827 | *end; /* End of line buffer */ | |
828 | ||
829 | ||
830 | /* | |
831 | * Range check input... | |
832 | */ | |
833 | ||
e07d4801 | 834 | DEBUG_printf(("2cupsFileGetLine(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", |
634763e8 MS |
835 | fp, buf, CUPS_LLCAST buflen)); |
836 | ||
80ca4592 | 837 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 3) |
838 | return (0); | |
839 | ||
840 | /* | |
841 | * Now loop until we have a valid line... | |
842 | */ | |
843 | ||
844 | for (ptr = buf, end = buf + buflen - 2; ptr < end ;) | |
845 | { | |
846 | if (fp->ptr >= fp->end) | |
847 | if (cups_fill(fp) <= 0) | |
848 | break; | |
849 | ||
850 | *ptr++ = ch = *(fp->ptr)++; | |
634763e8 | 851 | fp->pos ++; |
80ca4592 | 852 | |
853 | if (ch == '\r') | |
854 | { | |
855 | /* | |
856 | * Check for CR LF... | |
857 | */ | |
858 | ||
859 | if (fp->ptr >= fp->end) | |
860 | if (cups_fill(fp) <= 0) | |
861 | break; | |
862 | ||
863 | if (*(fp->ptr) == '\n') | |
634763e8 | 864 | { |
80ca4592 | 865 | *ptr++ = *(fp->ptr)++; |
634763e8 MS |
866 | fp->pos ++; |
867 | } | |
80ca4592 | 868 | |
869 | break; | |
870 | } | |
871 | else if (ch == '\n') | |
872 | { | |
873 | /* | |
874 | * Line feed ends a line... | |
875 | */ | |
876 | ||
877 | break; | |
878 | } | |
879 | } | |
880 | ||
881 | *ptr = '\0'; | |
882 | ||
e07d4801 | 883 | DEBUG_printf(("4cupsFileGetLine: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 884 | |
7e86f2f6 | 885 | return ((size_t)(ptr - buf)); |
80ca4592 | 886 | } |
887 | ||
888 | ||
ef416fc2 | 889 | /* |
890 | * 'cupsFileGets()' - Get a CR and/or LF-terminated line. | |
5a738aea | 891 | * |
f3c17241 | 892 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 893 | */ |
894 | ||
5a738aea | 895 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 896 | cupsFileGets(cups_file_t *fp, /* I - CUPS file */ |
897 | char *buf, /* O - String buffer */ | |
898 | size_t buflen) /* I - Size of string buffer */ | |
899 | { | |
900 | int ch; /* Character from file */ | |
901 | char *ptr, /* Current position in line buffer */ | |
902 | *end; /* End of line buffer */ | |
903 | ||
904 | ||
905 | /* | |
906 | * Range check input... | |
907 | */ | |
908 | ||
e07d4801 | 909 | DEBUG_printf(("2cupsFileGets(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
910 | CUPS_LLCAST buflen)); |
911 | ||
ef416fc2 | 912 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 2) |
913 | return (NULL); | |
914 | ||
915 | /* | |
916 | * Now loop until we have a valid line... | |
917 | */ | |
918 | ||
919 | for (ptr = buf, end = buf + buflen - 1; ptr < end ;) | |
920 | { | |
921 | if (fp->ptr >= fp->end) | |
922 | if (cups_fill(fp) <= 0) | |
923 | { | |
924 | if (ptr == buf) | |
925 | return (NULL); | |
926 | else | |
927 | break; | |
928 | } | |
929 | ||
930 | ch = *(fp->ptr)++; | |
634763e8 | 931 | fp->pos ++; |
ef416fc2 | 932 | |
933 | if (ch == '\r') | |
934 | { | |
935 | /* | |
936 | * Check for CR LF... | |
937 | */ | |
938 | ||
939 | if (fp->ptr >= fp->end) | |
940 | if (cups_fill(fp) <= 0) | |
941 | break; | |
942 | ||
943 | if (*(fp->ptr) == '\n') | |
634763e8 MS |
944 | { |
945 | fp->ptr ++; | |
946 | fp->pos ++; | |
947 | } | |
ef416fc2 | 948 | |
949 | break; | |
950 | } | |
951 | else if (ch == '\n') | |
952 | { | |
953 | /* | |
954 | * Line feed ends a line... | |
955 | */ | |
956 | ||
957 | break; | |
958 | } | |
959 | else | |
7e86f2f6 | 960 | *ptr++ = (char)ch; |
ef416fc2 | 961 | } |
962 | ||
963 | *ptr = '\0'; | |
964 | ||
e07d4801 | 965 | DEBUG_printf(("4cupsFileGets: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 966 | |
ef416fc2 | 967 | return (buf); |
968 | } | |
969 | ||
970 | ||
971 | /* | |
972 | * 'cupsFileLock()' - Temporarily lock access to a file. | |
5a738aea | 973 | * |
f3c17241 | 974 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 975 | */ |
976 | ||
977 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 978 | cupsFileLock(cups_file_t *fp, /* I - CUPS file */ |
ef416fc2 | 979 | int block) /* I - 1 to wait for the lock, 0 to fail right away */ |
980 | { | |
981 | /* | |
982 | * Range check... | |
983 | */ | |
984 | ||
985 | if (!fp || fp->mode == 's') | |
986 | return (-1); | |
987 | ||
988 | /* | |
989 | * Try the lock... | |
990 | */ | |
991 | ||
992 | #ifdef WIN32 | |
536bc2c6 | 993 | return (_locking(fp->fd, block ? _LK_LOCK : _LK_NBLCK, 0)); |
ef416fc2 | 994 | #else |
995 | return (lockf(fp->fd, block ? F_LOCK : F_TLOCK, 0)); | |
996 | #endif /* WIN32 */ | |
997 | } | |
998 | ||
999 | ||
1000 | /* | |
1001 | * 'cupsFileNumber()' - Return the file descriptor associated with a CUPS file. | |
5a738aea | 1002 | * |
f3c17241 | 1003 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1004 | */ |
1005 | ||
1006 | int /* O - File descriptor */ | |
1007 | cupsFileNumber(cups_file_t *fp) /* I - CUPS file */ | |
1008 | { | |
5a738aea MS |
1009 | if (fp) |
1010 | return (fp->fd); | |
1011 | else | |
1012 | return (-1); | |
ef416fc2 | 1013 | } |
1014 | ||
1015 | ||
1016 | /* | |
1017 | * 'cupsFileOpen()' - Open a CUPS file. | |
5a738aea MS |
1018 | * |
1019 | * The "mode" parameter can be "r" to read, "w" to write, overwriting any | |
1020 | * existing file, "a" to append to an existing file or create a new file, | |
1021 | * or "s" to open a socket connection. | |
1022 | * | |
634763e8 MS |
1023 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1024 | * supplied which enables Flate compression of the file. Compression is | |
1025 | * not supported for the "a" (append) mode. | |
5a738aea MS |
1026 | * |
1027 | * When opening a socket connection, the filename is a string of the form | |
1028 | * "address:port" or "hostname:port". The socket will make an IPv4 or IPv6 | |
1029 | * connection as needed, generally preferring IPv6 connections when there is | |
1030 | * a choice. | |
1031 | * | |
f3c17241 | 1032 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1033 | */ |
1034 | ||
5a738aea | 1035 | cups_file_t * /* O - CUPS file or @code NULL@ if the file or socket cannot be opened */ |
ef416fc2 | 1036 | cupsFileOpen(const char *filename, /* I - Name of file */ |
1037 | const char *mode) /* I - Open mode */ | |
1038 | { | |
1039 | cups_file_t *fp; /* New CUPS file */ | |
1040 | int fd; /* File descriptor */ | |
1041 | char hostname[1024], /* Hostname */ | |
1042 | *portname; /* Port "name" (number or service) */ | |
1043 | http_addrlist_t *addrlist; /* Host address list */ | |
1044 | ||
1045 | ||
e07d4801 | 1046 | DEBUG_printf(("cupsFileOpen(filename=\"%s\", mode=\"%s\")", filename, |
b423cd4c | 1047 | mode)); |
1048 | ||
ef416fc2 | 1049 | /* |
1050 | * Range check input... | |
1051 | */ | |
1052 | ||
1053 | if (!filename || !mode || | |
634763e8 MS |
1054 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1055 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1056 | return (NULL); |
1057 | ||
1058 | /* | |
1059 | * Open the file... | |
1060 | */ | |
1061 | ||
1062 | switch (*mode) | |
1063 | { | |
1064 | case 'a' : /* Append file */ | |
c7017ecc MS |
1065 | fd = cups_open(filename, |
1066 | O_RDWR | O_CREAT | O_APPEND | O_LARGEFILE | O_BINARY); | |
ef416fc2 | 1067 | break; |
1068 | ||
1069 | case 'r' : /* Read file */ | |
b86bc4cf | 1070 | fd = open(filename, O_RDONLY | O_LARGEFILE | O_BINARY, 0); |
ef416fc2 | 1071 | break; |
1072 | ||
1073 | case 'w' : /* Write file */ | |
c7017ecc MS |
1074 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); |
1075 | if (fd < 0 && errno == ENOENT) | |
1076 | { | |
1077 | fd = cups_open(filename, | |
1078 | O_WRONLY | O_CREAT | O_EXCL | O_LARGEFILE | O_BINARY); | |
1079 | if (fd < 0 && errno == EEXIST) | |
1080 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); | |
1081 | } | |
1082 | ||
1083 | if (fd >= 0) | |
1084 | #ifdef WIN32 | |
1085 | _chsize(fd, 0); | |
1086 | #else | |
1087 | ftruncate(fd, 0); | |
1088 | #endif /* WIN32 */ | |
ef416fc2 | 1089 | break; |
1090 | ||
1091 | case 's' : /* Read/write socket */ | |
1092 | strlcpy(hostname, filename, sizeof(hostname)); | |
1093 | if ((portname = strrchr(hostname, ':')) != NULL) | |
1094 | *portname++ = '\0'; | |
1095 | else | |
1096 | return (NULL); | |
1097 | ||
1098 | /* | |
1099 | * Lookup the hostname and service... | |
1100 | */ | |
1101 | ||
1102 | if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL) | |
1103 | return (NULL); | |
1104 | ||
1105 | /* | |
1106 | * Connect to the server... | |
1107 | */ | |
1108 | ||
1109 | if (!httpAddrConnect(addrlist, &fd)) | |
1110 | { | |
1111 | httpAddrFreeList(addrlist); | |
1112 | return (NULL); | |
1113 | } | |
1114 | ||
1115 | httpAddrFreeList(addrlist); | |
1116 | break; | |
1117 | ||
1118 | default : /* Remove bogus compiler warning... */ | |
1119 | return (NULL); | |
1120 | } | |
1121 | ||
1122 | if (fd < 0) | |
1123 | return (NULL); | |
1124 | ||
1125 | /* | |
1126 | * Create the CUPS file structure... | |
1127 | */ | |
1128 | ||
1129 | if ((fp = cupsFileOpenFd(fd, mode)) == NULL) | |
1130 | { | |
1131 | if (*mode == 's') | |
87e98392 | 1132 | httpAddrClose(NULL, fd); |
ef416fc2 | 1133 | else |
1134 | close(fd); | |
1135 | } | |
1136 | ||
1137 | /* | |
1138 | * Return it... | |
1139 | */ | |
1140 | ||
1141 | return (fp); | |
1142 | } | |
1143 | ||
1144 | /* | |
1145 | * 'cupsFileOpenFd()' - Open a CUPS file using a file descriptor. | |
5a738aea | 1146 | * |
634763e8 MS |
1147 | * The "mode" parameter can be "r" to read, "w" to write, "a" to append, |
1148 | * or "s" to treat the file descriptor as a bidirectional socket connection. | |
5a738aea | 1149 | * |
634763e8 MS |
1150 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1151 | * supplied which enables Flate compression of the file. Compression is | |
1152 | * not supported for the "a" (append) mode. | |
5a738aea | 1153 | * |
f3c17241 | 1154 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1155 | */ |
1156 | ||
5a738aea | 1157 | cups_file_t * /* O - CUPS file or @code NULL@ if the file could not be opened */ |
ef416fc2 | 1158 | cupsFileOpenFd(int fd, /* I - File descriptor */ |
1159 | const char *mode) /* I - Open mode */ | |
1160 | { | |
1161 | cups_file_t *fp; /* New CUPS file */ | |
1162 | ||
1163 | ||
e07d4801 | 1164 | DEBUG_printf(("cupsFileOpenFd(fd=%d, mode=\"%s\")", fd, mode)); |
b423cd4c | 1165 | |
ef416fc2 | 1166 | /* |
1167 | * Range check input... | |
1168 | */ | |
1169 | ||
1170 | if (fd < 0 || !mode || | |
634763e8 MS |
1171 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1172 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1173 | return (NULL); |
1174 | ||
1175 | /* | |
1176 | * Allocate memory... | |
1177 | */ | |
1178 | ||
1179 | if ((fp = calloc(1, sizeof(cups_file_t))) == NULL) | |
1180 | return (NULL); | |
1181 | ||
1182 | /* | |
1183 | * Open the file... | |
1184 | */ | |
1185 | ||
1186 | fp->fd = fd; | |
1187 | ||
1188 | switch (*mode) | |
1189 | { | |
ef416fc2 | 1190 | case 'a' : |
634763e8 MS |
1191 | fp->pos = lseek(fd, 0, SEEK_END); |
1192 | ||
1193 | case 'w' : | |
ef416fc2 | 1194 | fp->mode = 'w'; |
1195 | fp->ptr = fp->buf; | |
1196 | fp->end = fp->buf + sizeof(fp->buf); | |
1197 | ||
1198 | #ifdef HAVE_LIBZ | |
1199 | if (mode[1] >= '1' && mode[1] <= '9') | |
1200 | { | |
1201 | /* | |
1202 | * Open a compressed stream, so write the standard gzip file | |
1203 | * header... | |
1204 | */ | |
1205 | ||
1206 | unsigned char header[10]; /* gzip file header */ | |
1207 | time_t curtime; /* Current time */ | |
1208 | ||
1209 | ||
1210 | curtime = time(NULL); | |
1211 | header[0] = 0x1f; | |
1212 | header[1] = 0x8b; | |
1213 | header[2] = Z_DEFLATED; | |
1214 | header[3] = 0; | |
7e86f2f6 MS |
1215 | header[4] = (unsigned char)curtime; |
1216 | header[5] = (unsigned char)(curtime >> 8); | |
1217 | header[6] = (unsigned char)(curtime >> 16); | |
1218 | header[7] = (unsigned char)(curtime >> 24); | |
ef416fc2 | 1219 | header[8] = 0; |
1220 | header[9] = 0x03; | |
1221 | ||
1222 | cups_write(fp, (char *)header, 10); | |
1223 | ||
1224 | /* | |
1225 | * Initialize the compressor... | |
1226 | */ | |
1227 | ||
1228 | deflateInit2(&(fp->stream), mode[1] - '0', Z_DEFLATED, -15, 8, | |
1229 | Z_DEFAULT_STRATEGY); | |
1230 | ||
1231 | fp->stream.next_out = fp->cbuf; | |
1232 | fp->stream.avail_out = sizeof(fp->cbuf); | |
1233 | fp->compressed = 1; | |
1234 | fp->crc = crc32(0L, Z_NULL, 0); | |
1235 | } | |
1236 | #endif /* HAVE_LIBZ */ | |
1237 | break; | |
1238 | ||
1239 | case 'r' : | |
1240 | fp->mode = 'r'; | |
1241 | break; | |
1242 | ||
1243 | case 's' : | |
1244 | fp->mode = 's'; | |
1245 | break; | |
1246 | ||
1247 | default : /* Remove bogus compiler warning... */ | |
1248 | return (NULL); | |
1249 | } | |
1250 | ||
1251 | /* | |
1252 | * Don't pass this file to child processes... | |
1253 | */ | |
1254 | ||
1255 | #ifndef WIN32 | |
1256 | fcntl(fp->fd, F_SETFD, fcntl(fp->fd, F_GETFD) | FD_CLOEXEC); | |
1257 | #endif /* !WIN32 */ | |
1258 | ||
1259 | return (fp); | |
1260 | } | |
1261 | ||
1262 | ||
1263 | /* | |
1264 | * 'cupsFilePeekChar()' - Peek at the next character from a file. | |
5a738aea | 1265 | * |
f3c17241 | 1266 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1267 | */ |
1268 | ||
5a738aea | 1269 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 1270 | cupsFilePeekChar(cups_file_t *fp) /* I - CUPS file */ |
1271 | { | |
1272 | /* | |
1273 | * Range check input... | |
1274 | */ | |
1275 | ||
1276 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
1277 | return (-1); | |
1278 | ||
1279 | /* | |
1280 | * If the input buffer is empty, try to read more data... | |
1281 | */ | |
1282 | ||
1283 | if (fp->ptr >= fp->end) | |
1284 | if (cups_fill(fp) < 0) | |
1285 | return (-1); | |
1286 | ||
1287 | /* | |
1288 | * Return the next character in the buffer... | |
1289 | */ | |
1290 | ||
1291 | return (*(fp->ptr) & 255); | |
1292 | } | |
1293 | ||
1294 | ||
1295 | /* | |
1296 | * 'cupsFilePrintf()' - Write a formatted string. | |
5a738aea | 1297 | * |
f3c17241 | 1298 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1299 | */ |
1300 | ||
5a738aea | 1301 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1302 | cupsFilePrintf(cups_file_t *fp, /* I - CUPS file */ |
1303 | const char *format, /* I - Printf-style format string */ | |
1304 | ...) /* I - Additional args as necessary */ | |
1305 | { | |
1306 | va_list ap; /* Argument list */ | |
2abf387c | 1307 | ssize_t bytes; /* Formatted size */ |
ecdc0628 | 1308 | |
ef416fc2 | 1309 | |
e07d4801 | 1310 | DEBUG_printf(("2cupsFilePrintf(fp=%p, format=\"%s\", ...)", fp, format)); |
ef416fc2 | 1311 | |
1312 | if (!fp || !format || (fp->mode != 'w' && fp->mode != 's')) | |
1313 | return (-1); | |
1314 | ||
75bd9771 MS |
1315 | if (!fp->printf_buffer) |
1316 | { | |
1317 | /* | |
1318 | * Start with an 1k printf buffer... | |
1319 | */ | |
1320 | ||
1321 | if ((fp->printf_buffer = malloc(1024)) == NULL) | |
1322 | return (-1); | |
1323 | ||
1324 | fp->printf_size = 1024; | |
1325 | } | |
1326 | ||
ef416fc2 | 1327 | va_start(ap, format); |
75bd9771 | 1328 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); |
ef416fc2 | 1329 | va_end(ap); |
1330 | ||
536bc2c6 | 1331 | if (bytes >= (ssize_t)fp->printf_size) |
75bd9771 MS |
1332 | { |
1333 | /* | |
1334 | * Expand the printf buffer... | |
1335 | */ | |
1336 | ||
1337 | char *temp; /* Temporary buffer pointer */ | |
1338 | ||
1339 | ||
1340 | if (bytes > 65535) | |
1341 | return (-1); | |
1342 | ||
7e86f2f6 | 1343 | if ((temp = realloc(fp->printf_buffer, (size_t)(bytes + 1))) == NULL) |
75bd9771 MS |
1344 | return (-1); |
1345 | ||
1346 | fp->printf_buffer = temp; | |
7e86f2f6 | 1347 | fp->printf_size = (size_t)(bytes + 1); |
75bd9771 MS |
1348 | |
1349 | va_start(ap, format); | |
1350 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); | |
1351 | va_end(ap); | |
1352 | } | |
ecdc0628 | 1353 | |
ef416fc2 | 1354 | if (fp->mode == 's') |
634763e8 | 1355 | { |
7e86f2f6 | 1356 | if (cups_write(fp, fp->printf_buffer, (size_t)bytes) < 0) |
634763e8 MS |
1357 | return (-1); |
1358 | ||
1359 | fp->pos += bytes; | |
1360 | ||
e07d4801 | 1361 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1362 | |
7e86f2f6 | 1363 | return ((int)bytes); |
634763e8 | 1364 | } |
ef416fc2 | 1365 | |
1366 | if ((fp->ptr + bytes) > fp->end) | |
1367 | if (cupsFileFlush(fp)) | |
1368 | return (-1); | |
1369 | ||
1370 | fp->pos += bytes; | |
1371 | ||
e07d4801 | 1372 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1373 | |
7e86f2f6 | 1374 | if ((size_t)bytes > sizeof(fp->buf)) |
ef416fc2 | 1375 | { |
1376 | #ifdef HAVE_LIBZ | |
1377 | if (fp->compressed) | |
7e86f2f6 | 1378 | return ((int)cups_compress(fp, fp->printf_buffer, (size_t)bytes)); |
ef416fc2 | 1379 | else |
1380 | #endif /* HAVE_LIBZ */ | |
7e86f2f6 | 1381 | return ((int)cups_write(fp, fp->printf_buffer, (size_t)bytes)); |
ef416fc2 | 1382 | } |
1383 | else | |
1384 | { | |
07623986 | 1385 | memcpy(fp->ptr, fp->printf_buffer, (size_t)bytes); |
ef416fc2 | 1386 | fp->ptr += bytes; |
7e86f2f6 | 1387 | return ((int)bytes); |
ef416fc2 | 1388 | } |
1389 | } | |
1390 | ||
1391 | ||
1392 | /* | |
1393 | * 'cupsFilePutChar()' - Write a character. | |
5a738aea | 1394 | * |
f3c17241 | 1395 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1396 | */ |
1397 | ||
1398 | int /* O - 0 on success, -1 on error */ | |
1399 | cupsFilePutChar(cups_file_t *fp, /* I - CUPS file */ | |
1400 | int c) /* I - Character to write */ | |
1401 | { | |
1402 | /* | |
1403 | * Range check input... | |
1404 | */ | |
1405 | ||
1406 | if (!fp || (fp->mode != 'w' && fp->mode != 's')) | |
1407 | return (-1); | |
1408 | ||
1409 | if (fp->mode == 's') | |
1410 | { | |
1411 | /* | |
1412 | * Send character immediately over socket... | |
1413 | */ | |
1414 | ||
1415 | char ch; /* Output character */ | |
1416 | ||
1417 | ||
7e86f2f6 | 1418 | ch = (char)c; |
ef416fc2 | 1419 | |
1420 | if (send(fp->fd, &ch, 1, 0) < 1) | |
1421 | return (-1); | |
1422 | } | |
1423 | else | |
1424 | { | |
1425 | /* | |
1426 | * Buffer it up... | |
1427 | */ | |
1428 | ||
1429 | if (fp->ptr >= fp->end) | |
1430 | if (cupsFileFlush(fp)) | |
1431 | return (-1); | |
1432 | ||
7e86f2f6 | 1433 | *(fp->ptr) ++ = (char)c; |
ef416fc2 | 1434 | } |
1435 | ||
1436 | fp->pos ++; | |
1437 | ||
e07d4801 | 1438 | DEBUG_printf(("4cupsFilePutChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1439 | |
ef416fc2 | 1440 | return (0); |
1441 | } | |
1442 | ||
1443 | ||
58dc1933 MS |
1444 | /* |
1445 | * 'cupsFilePutConf()' - Write a configuration line. | |
1446 | * | |
1447 | * This function handles any comment escaping of the value. | |
1448 | * | |
f3c17241 | 1449 | * @since CUPS 1.4/OS X 10.6@ |
58dc1933 MS |
1450 | */ |
1451 | ||
1452 | ssize_t /* O - Number of bytes written or -1 on error */ | |
1453 | cupsFilePutConf(cups_file_t *fp, /* I - CUPS file */ | |
1454 | const char *directive, /* I - Directive */ | |
1455 | const char *value) /* I - Value */ | |
1456 | { | |
1457 | ssize_t bytes, /* Number of bytes written */ | |
1458 | temp; /* Temporary byte count */ | |
1459 | const char *ptr; /* Pointer into value */ | |
1460 | ||
1461 | ||
1462 | if (!fp || !directive || !*directive) | |
1463 | return (-1); | |
1464 | ||
1465 | if ((bytes = cupsFilePuts(fp, directive)) < 0) | |
1466 | return (-1); | |
1467 | ||
1468 | if (cupsFilePutChar(fp, ' ') < 0) | |
1469 | return (-1); | |
1470 | bytes ++; | |
1471 | ||
1472 | if (value && *value) | |
1473 | { | |
1474 | if ((ptr = strchr(value, '#')) != NULL) | |
1475 | { | |
1476 | /* | |
1477 | * Need to quote the first # in the info string... | |
1478 | */ | |
1479 | ||
7e86f2f6 | 1480 | if ((temp = cupsFileWrite(fp, value, (size_t)(ptr - value))) < 0) |
58dc1933 MS |
1481 | return (-1); |
1482 | bytes += temp; | |
1483 | ||
1484 | if (cupsFilePutChar(fp, '\\') < 0) | |
1485 | return (-1); | |
1486 | bytes ++; | |
1487 | ||
1488 | if ((temp = cupsFilePuts(fp, ptr)) < 0) | |
1489 | return (-1); | |
1490 | bytes += temp; | |
1491 | } | |
1492 | else if ((temp = cupsFilePuts(fp, value)) < 0) | |
1493 | return (-1); | |
1494 | else | |
1495 | bytes += temp; | |
1496 | } | |
1497 | ||
1498 | if (cupsFilePutChar(fp, '\n') < 0) | |
1499 | return (-1); | |
1500 | else | |
1501 | return (bytes + 1); | |
1502 | } | |
1503 | ||
1504 | ||
ef416fc2 | 1505 | /* |
1506 | * 'cupsFilePuts()' - Write a string. | |
5a738aea MS |
1507 | * |
1508 | * Like the @code fputs@ function, no newline is appended to the string. | |
1509 | * | |
f3c17241 | 1510 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1511 | */ |
1512 | ||
5a738aea | 1513 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1514 | cupsFilePuts(cups_file_t *fp, /* I - CUPS file */ |
1515 | const char *s) /* I - String to write */ | |
1516 | { | |
2abf387c | 1517 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 1518 | |
1519 | ||
1520 | /* | |
1521 | * Range check input... | |
1522 | */ | |
1523 | ||
1524 | if (!fp || !s || (fp->mode != 'w' && fp->mode != 's')) | |
1525 | return (-1); | |
1526 | ||
1527 | /* | |
1528 | * Write the string... | |
1529 | */ | |
1530 | ||
7e86f2f6 | 1531 | bytes = (ssize_t)strlen(s); |
ef416fc2 | 1532 | |
1533 | if (fp->mode == 's') | |
1534 | { | |
7e86f2f6 | 1535 | if (cups_write(fp, s, (size_t)bytes) < 0) |
ef416fc2 | 1536 | return (-1); |
1537 | ||
1538 | fp->pos += bytes; | |
1539 | ||
e07d4801 | 1540 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1541 | |
7e86f2f6 | 1542 | return ((int)bytes); |
ef416fc2 | 1543 | } |
1544 | ||
1545 | if ((fp->ptr + bytes) > fp->end) | |
1546 | if (cupsFileFlush(fp)) | |
1547 | return (-1); | |
1548 | ||
1549 | fp->pos += bytes; | |
1550 | ||
e07d4801 | 1551 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1552 | |
7e86f2f6 | 1553 | if ((size_t)bytes > sizeof(fp->buf)) |
ef416fc2 | 1554 | { |
1555 | #ifdef HAVE_LIBZ | |
1556 | if (fp->compressed) | |
7e86f2f6 | 1557 | return ((int)cups_compress(fp, s, (size_t)bytes)); |
ef416fc2 | 1558 | else |
1559 | #endif /* HAVE_LIBZ */ | |
7e86f2f6 | 1560 | return ((int)cups_write(fp, s, (size_t)bytes)); |
ef416fc2 | 1561 | } |
1562 | else | |
1563 | { | |
07623986 | 1564 | memcpy(fp->ptr, s, (size_t)bytes); |
ef416fc2 | 1565 | fp->ptr += bytes; |
7e86f2f6 | 1566 | return ((int)bytes); |
ef416fc2 | 1567 | } |
1568 | } | |
1569 | ||
1570 | ||
1571 | /* | |
1572 | * 'cupsFileRead()' - Read from a file. | |
5a738aea | 1573 | * |
f3c17241 | 1574 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1575 | */ |
1576 | ||
5a738aea | 1577 | ssize_t /* O - Number of bytes read or -1 on error */ |
ef416fc2 | 1578 | cupsFileRead(cups_file_t *fp, /* I - CUPS file */ |
1579 | char *buf, /* O - Buffer */ | |
1580 | size_t bytes) /* I - Number of bytes to read */ | |
1581 | { | |
2abf387c | 1582 | size_t total; /* Total bytes read */ |
1583 | ssize_t count; /* Bytes read */ | |
ef416fc2 | 1584 | |
1585 | ||
e07d4801 | 1586 | DEBUG_printf(("2cupsFileRead(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 1587 | CUPS_LLCAST bytes)); |
ef416fc2 | 1588 | |
1589 | /* | |
1590 | * Range check input... | |
1591 | */ | |
1592 | ||
82f97232 | 1593 | if (!fp || !buf || (fp->mode != 'r' && fp->mode != 's')) |
ef416fc2 | 1594 | return (-1); |
1595 | ||
1596 | if (bytes == 0) | |
1597 | return (0); | |
1598 | ||
1599 | /* | |
1600 | * Loop until all bytes are read... | |
1601 | */ | |
1602 | ||
1603 | total = 0; | |
1604 | while (bytes > 0) | |
1605 | { | |
1606 | if (fp->ptr >= fp->end) | |
1607 | if (cups_fill(fp) <= 0) | |
1608 | { | |
e07d4801 MS |
1609 | DEBUG_printf(("4cupsFileRead: cups_fill() returned -1, total=" |
1610 | CUPS_LLFMT, CUPS_LLCAST total)); | |
ef416fc2 | 1611 | |
1612 | if (total > 0) | |
b86bc4cf | 1613 | return ((ssize_t)total); |
ef416fc2 | 1614 | else |
1615 | return (-1); | |
1616 | } | |
1617 | ||
b86bc4cf | 1618 | count = (ssize_t)(fp->end - fp->ptr); |
1619 | if (count > (ssize_t)bytes) | |
1620 | count = (ssize_t)bytes; | |
ef416fc2 | 1621 | |
07623986 | 1622 | memcpy(buf, fp->ptr,(size_t) count); |
ef416fc2 | 1623 | fp->ptr += count; |
634763e8 MS |
1624 | fp->pos += count; |
1625 | ||
e07d4801 | 1626 | DEBUG_printf(("4cupsFileRead: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1627 | |
1628 | /* | |
1629 | * Update the counts for the last read... | |
1630 | */ | |
1631 | ||
7e86f2f6 MS |
1632 | bytes -= (size_t)count; |
1633 | total += (size_t)count; | |
ef416fc2 | 1634 | buf += count; |
1635 | } | |
1636 | ||
1637 | /* | |
1638 | * Return the total number of bytes read... | |
1639 | */ | |
1640 | ||
e07d4801 | 1641 | DEBUG_printf(("3cupsFileRead: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
ef416fc2 | 1642 | |
b86bc4cf | 1643 | return ((ssize_t)total); |
ef416fc2 | 1644 | } |
1645 | ||
1646 | ||
1647 | /* | |
5a738aea MS |
1648 | * 'cupsFileRewind()' - Set the current file position to the beginning of the |
1649 | * file. | |
1650 | * | |
f3c17241 | 1651 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1652 | */ |
1653 | ||
5a738aea | 1654 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1655 | cupsFileRewind(cups_file_t *fp) /* I - CUPS file */ |
1656 | { | |
80ca4592 | 1657 | /* |
1658 | * Range check input... | |
1659 | */ | |
1660 | ||
e07d4801 MS |
1661 | DEBUG_printf(("cupsFileRewind(fp=%p)", fp)); |
1662 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); | |
634763e8 | 1663 | |
80ca4592 | 1664 | if (!fp || fp->mode != 'r') |
1665 | return (-1); | |
1666 | ||
1667 | /* | |
1668 | * Handle special cases... | |
1669 | */ | |
1670 | ||
634763e8 | 1671 | if (fp->bufpos == 0) |
80ca4592 | 1672 | { |
1673 | /* | |
1674 | * No seeking necessary... | |
1675 | */ | |
1676 | ||
634763e8 MS |
1677 | fp->pos = 0; |
1678 | ||
80ca4592 | 1679 | if (fp->ptr) |
1680 | { | |
1681 | fp->ptr = fp->buf; | |
1682 | fp->eof = 0; | |
1683 | } | |
1684 | ||
e07d4801 | 1685 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1686 | |
80ca4592 | 1687 | return (0); |
1688 | } | |
1689 | ||
1690 | /* | |
1691 | * Otherwise, seek in the file and cleanup any compression buffers... | |
1692 | */ | |
1693 | ||
1694 | #ifdef HAVE_LIBZ | |
1695 | if (fp->compressed) | |
1696 | { | |
1697 | inflateEnd(&fp->stream); | |
1698 | fp->compressed = 0; | |
1699 | } | |
1700 | #endif /* HAVE_LIBZ */ | |
1701 | ||
c9fc04c6 MS |
1702 | if (lseek(fp->fd, 0, SEEK_SET)) |
1703 | { | |
e07d4801 | 1704 | DEBUG_printf(("1cupsFileRewind: lseek failed: %s", strerror(errno))); |
c9fc04c6 MS |
1705 | return (-1); |
1706 | } | |
80ca4592 | 1707 | |
634763e8 MS |
1708 | fp->bufpos = 0; |
1709 | fp->pos = 0; | |
1710 | fp->ptr = NULL; | |
1711 | fp->end = NULL; | |
1712 | fp->eof = 0; | |
1713 | ||
e07d4801 | 1714 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
80ca4592 | 1715 | |
1716 | return (0); | |
ef416fc2 | 1717 | } |
1718 | ||
1719 | ||
1720 | /* | |
1721 | * 'cupsFileSeek()' - Seek in a file. | |
5a738aea | 1722 | * |
f3c17241 | 1723 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1724 | */ |
1725 | ||
5a738aea | 1726 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1727 | cupsFileSeek(cups_file_t *fp, /* I - CUPS file */ |
1728 | off_t pos) /* I - Position in file */ | |
1729 | { | |
2abf387c | 1730 | ssize_t bytes; /* Number bytes in buffer */ |
ef416fc2 | 1731 | |
1732 | ||
e07d4801 | 1733 | DEBUG_printf(("cupsFileSeek(fp=%p, pos=" CUPS_LLFMT ")", fp, |
634763e8 | 1734 | CUPS_LLCAST pos)); |
e07d4801 MS |
1735 | DEBUG_printf(("2cupsFileSeek: fp->pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
1736 | DEBUG_printf(("2cupsFileSeek: fp->ptr=%p, fp->end=%p", fp->ptr, fp->end)); | |
ef416fc2 | 1737 | |
1738 | /* | |
1739 | * Range check input... | |
1740 | */ | |
1741 | ||
1742 | if (!fp || pos < 0 || fp->mode != 'r') | |
1743 | return (-1); | |
1744 | ||
80ca4592 | 1745 | /* |
1746 | * Handle special cases... | |
1747 | */ | |
1748 | ||
1749 | if (pos == 0) | |
1750 | return (cupsFileRewind(fp)); | |
1751 | ||
634763e8 | 1752 | if (fp->ptr) |
b423cd4c | 1753 | { |
634763e8 | 1754 | bytes = (ssize_t)(fp->end - fp->buf); |
b423cd4c | 1755 | |
e07d4801 | 1756 | DEBUG_printf(("2cupsFileSeek: bytes=" CUPS_LLFMT, CUPS_LLCAST bytes)); |
c168a833 | 1757 | |
634763e8 | 1758 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
b423cd4c | 1759 | { |
634763e8 MS |
1760 | /* |
1761 | * No seeking necessary... | |
1762 | */ | |
1763 | ||
1764 | fp->pos = pos; | |
1765 | fp->ptr = fp->buf + pos - fp->bufpos; | |
b423cd4c | 1766 | fp->eof = 0; |
b423cd4c | 1767 | |
634763e8 MS |
1768 | return (pos); |
1769 | } | |
b423cd4c | 1770 | } |
1771 | ||
80ca4592 | 1772 | #ifdef HAVE_LIBZ |
1773 | if (!fp->compressed && !fp->ptr) | |
1774 | { | |
1775 | /* | |
1776 | * Preload a buffer to determine whether the file is compressed... | |
1777 | */ | |
1778 | ||
1779 | if (cups_fill(fp) < 0) | |
1780 | return (-1); | |
1781 | } | |
1782 | #endif /* HAVE_LIBZ */ | |
1783 | ||
ef416fc2 | 1784 | /* |
634763e8 | 1785 | * Seek forwards or backwards... |
ef416fc2 | 1786 | */ |
1787 | ||
ef416fc2 | 1788 | fp->eof = 0; |
1789 | ||
634763e8 | 1790 | if (pos < fp->bufpos) |
ef416fc2 | 1791 | { |
1792 | /* | |
1793 | * Need to seek backwards... | |
1794 | */ | |
1795 | ||
e07d4801 | 1796 | DEBUG_puts("2cupsFileSeek: SEEK BACKWARDS"); |
80ca4592 | 1797 | |
ef416fc2 | 1798 | #ifdef HAVE_LIBZ |
1799 | if (fp->compressed) | |
1800 | { | |
1801 | inflateEnd(&fp->stream); | |
1802 | ||
1803 | lseek(fp->fd, 0, SEEK_SET); | |
634763e8 MS |
1804 | fp->bufpos = 0; |
1805 | fp->pos = 0; | |
1806 | fp->ptr = NULL; | |
1807 | fp->end = NULL; | |
ef416fc2 | 1808 | |
1809 | while ((bytes = cups_fill(fp)) > 0) | |
634763e8 | 1810 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1811 | break; |
1812 | ||
1813 | if (bytes <= 0) | |
1814 | return (-1); | |
80ca4592 | 1815 | |
634763e8 MS |
1816 | fp->ptr = fp->buf + pos - fp->bufpos; |
1817 | fp->pos = pos; | |
ef416fc2 | 1818 | } |
1819 | else | |
1820 | #endif /* HAVE_LIBZ */ | |
1821 | { | |
634763e8 MS |
1822 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1823 | fp->pos = fp->bufpos; | |
1824 | fp->ptr = NULL; | |
1825 | fp->end = NULL; | |
80ca4592 | 1826 | |
e07d4801 | 1827 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1828 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1829 | } |
1830 | } | |
634763e8 | 1831 | else |
ef416fc2 | 1832 | { |
1833 | /* | |
1834 | * Need to seek forwards... | |
1835 | */ | |
1836 | ||
e07d4801 | 1837 | DEBUG_puts("2cupsFileSeek: SEEK FORWARDS"); |
80ca4592 | 1838 | |
ef416fc2 | 1839 | #ifdef HAVE_LIBZ |
80ca4592 | 1840 | if (fp->compressed) |
ef416fc2 | 1841 | { |
1842 | while ((bytes = cups_fill(fp)) > 0) | |
80ca4592 | 1843 | { |
634763e8 | 1844 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1845 | break; |
80ca4592 | 1846 | } |
ef416fc2 | 1847 | |
1848 | if (bytes <= 0) | |
1849 | return (-1); | |
80ca4592 | 1850 | |
634763e8 MS |
1851 | fp->ptr = fp->buf + pos - fp->bufpos; |
1852 | fp->pos = pos; | |
ef416fc2 | 1853 | } |
1854 | else | |
1855 | #endif /* HAVE_LIBZ */ | |
1856 | { | |
634763e8 MS |
1857 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1858 | fp->pos = fp->bufpos; | |
1859 | fp->ptr = NULL; | |
1860 | fp->end = NULL; | |
80ca4592 | 1861 | |
e07d4801 | 1862 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1863 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1864 | } |
1865 | } | |
ef416fc2 | 1866 | |
e07d4801 | 1867 | DEBUG_printf(("2cupsFileSeek: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1868 | |
1869 | return (fp->pos); | |
1870 | } | |
1871 | ||
1872 | ||
80ca4592 | 1873 | /* |
1874 | * 'cupsFileStderr()' - Return a CUPS file associated with stderr. | |
5a738aea | 1875 | * |
f3c17241 | 1876 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 1877 | */ |
1878 | ||
5a738aea | 1879 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1880 | cupsFileStderr(void) |
1881 | { | |
1882 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1883 | ||
1884 | ||
1885 | /* | |
1886 | * Open file descriptor 2 as needed... | |
1887 | */ | |
1888 | ||
1889 | if (!cg->stdio_files[2]) | |
1890 | { | |
1891 | /* | |
1892 | * Flush any pending output on the stdio file... | |
1893 | */ | |
1894 | ||
1895 | fflush(stderr); | |
1896 | ||
1897 | /* | |
1898 | * Open file descriptor 2... | |
1899 | */ | |
1900 | ||
1901 | if ((cg->stdio_files[2] = cupsFileOpenFd(2, "w")) != NULL) | |
1902 | cg->stdio_files[2]->is_stdio = 1; | |
1903 | } | |
1904 | ||
1905 | return (cg->stdio_files[2]); | |
1906 | } | |
1907 | ||
1908 | ||
1909 | /* | |
1910 | * 'cupsFileStdin()' - Return a CUPS file associated with stdin. | |
5a738aea | 1911 | * |
f3c17241 | 1912 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 1913 | */ |
1914 | ||
5a738aea | 1915 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1916 | cupsFileStdin(void) |
1917 | { | |
1918 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1919 | ||
1920 | ||
1921 | /* | |
1922 | * Open file descriptor 0 as needed... | |
1923 | */ | |
1924 | ||
1925 | if (!cg->stdio_files[0]) | |
1926 | { | |
1927 | /* | |
1928 | * Open file descriptor 0... | |
1929 | */ | |
1930 | ||
1931 | if ((cg->stdio_files[0] = cupsFileOpenFd(0, "r")) != NULL) | |
1932 | cg->stdio_files[0]->is_stdio = 1; | |
1933 | } | |
1934 | ||
1935 | return (cg->stdio_files[0]); | |
1936 | } | |
1937 | ||
1938 | ||
1939 | /* | |
1940 | * 'cupsFileStdout()' - Return a CUPS file associated with stdout. | |
5a738aea | 1941 | * |
f3c17241 | 1942 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 1943 | */ |
1944 | ||
5a738aea | 1945 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1946 | cupsFileStdout(void) |
1947 | { | |
1948 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1949 | ||
1950 | ||
1951 | /* | |
1952 | * Open file descriptor 1 as needed... | |
1953 | */ | |
1954 | ||
1955 | if (!cg->stdio_files[1]) | |
1956 | { | |
1957 | /* | |
1958 | * Flush any pending output on the stdio file... | |
1959 | */ | |
1960 | ||
1961 | fflush(stdout); | |
1962 | ||
1963 | /* | |
1964 | * Open file descriptor 1... | |
1965 | */ | |
1966 | ||
1967 | if ((cg->stdio_files[1] = cupsFileOpenFd(1, "w")) != NULL) | |
1968 | cg->stdio_files[1]->is_stdio = 1; | |
1969 | } | |
1970 | ||
1971 | return (cg->stdio_files[1]); | |
1972 | } | |
1973 | ||
1974 | ||
ef416fc2 | 1975 | /* |
1976 | * 'cupsFileTell()' - Return the current file position. | |
5a738aea | 1977 | * |
f3c17241 | 1978 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1979 | */ |
1980 | ||
1981 | off_t /* O - File position */ | |
1982 | cupsFileTell(cups_file_t *fp) /* I - CUPS file */ | |
1983 | { | |
e07d4801 MS |
1984 | DEBUG_printf(("2cupsFileTell(fp=%p)", fp)); |
1985 | DEBUG_printf(("3cupsFileTell: pos=" CUPS_LLFMT, | |
1986 | CUPS_LLCAST (fp ? fp->pos : -1))); | |
634763e8 | 1987 | |
80ca4592 | 1988 | return (fp ? fp->pos : 0); |
ef416fc2 | 1989 | } |
1990 | ||
1991 | ||
1992 | /* | |
1993 | * 'cupsFileUnlock()' - Unlock access to a file. | |
5a738aea | 1994 | * |
f3c17241 | 1995 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1996 | */ |
1997 | ||
1998 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 1999 | cupsFileUnlock(cups_file_t *fp) /* I - CUPS file */ |
ef416fc2 | 2000 | { |
2001 | /* | |
2002 | * Range check... | |
2003 | */ | |
2004 | ||
e07d4801 | 2005 | DEBUG_printf(("cupsFileUnlock(fp=%p)", fp)); |
634763e8 | 2006 | |
ef416fc2 | 2007 | if (!fp || fp->mode == 's') |
2008 | return (-1); | |
2009 | ||
2010 | /* | |
2011 | * Unlock... | |
2012 | */ | |
2013 | ||
2014 | #ifdef WIN32 | |
536bc2c6 | 2015 | return (_locking(fp->fd, _LK_UNLCK, 0)); |
ef416fc2 | 2016 | #else |
2017 | return (lockf(fp->fd, F_ULOCK, 0)); | |
2018 | #endif /* WIN32 */ | |
2019 | } | |
2020 | ||
2021 | ||
2022 | /* | |
2023 | * 'cupsFileWrite()' - Write to a file. | |
5a738aea | 2024 | * |
f3c17241 | 2025 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 2026 | */ |
2027 | ||
5a738aea | 2028 | ssize_t /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 2029 | cupsFileWrite(cups_file_t *fp, /* I - CUPS file */ |
2030 | const char *buf, /* I - Buffer */ | |
2031 | size_t bytes) /* I - Number of bytes to write */ | |
2032 | { | |
2033 | /* | |
2034 | * Range check input... | |
2035 | */ | |
2036 | ||
e07d4801 | 2037 | DEBUG_printf(("2cupsFileWrite(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", |
634763e8 MS |
2038 | fp, buf, CUPS_LLCAST bytes)); |
2039 | ||
82f97232 | 2040 | if (!fp || !buf || (fp->mode != 'w' && fp->mode != 's')) |
ef416fc2 | 2041 | return (-1); |
2042 | ||
2043 | if (bytes == 0) | |
2044 | return (0); | |
2045 | ||
2046 | /* | |
2047 | * Write the buffer... | |
2048 | */ | |
2049 | ||
2050 | if (fp->mode == 's') | |
2051 | { | |
2052 | if (cups_write(fp, buf, bytes) < 0) | |
2053 | return (-1); | |
2054 | ||
b86bc4cf | 2055 | fp->pos += (off_t)bytes; |
ef416fc2 | 2056 | |
e07d4801 | 2057 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2058 | |
b86bc4cf | 2059 | return ((ssize_t)bytes); |
ef416fc2 | 2060 | } |
2061 | ||
2062 | if ((fp->ptr + bytes) > fp->end) | |
2063 | if (cupsFileFlush(fp)) | |
2064 | return (-1); | |
2065 | ||
b86bc4cf | 2066 | fp->pos += (off_t)bytes; |
ef416fc2 | 2067 | |
e07d4801 | 2068 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2069 | |
ef416fc2 | 2070 | if (bytes > sizeof(fp->buf)) |
2071 | { | |
2072 | #ifdef HAVE_LIBZ | |
2073 | if (fp->compressed) | |
2074 | return (cups_compress(fp, buf, bytes)); | |
2075 | else | |
2076 | #endif /* HAVE_LIBZ */ | |
2077 | return (cups_write(fp, buf, bytes)); | |
2078 | } | |
2079 | else | |
2080 | { | |
2081 | memcpy(fp->ptr, buf, bytes); | |
2082 | fp->ptr += bytes; | |
b86bc4cf | 2083 | return ((ssize_t)bytes); |
ef416fc2 | 2084 | } |
2085 | } | |
2086 | ||
2087 | ||
2088 | #ifdef HAVE_LIBZ | |
2089 | /* | |
22c9029b | 2090 | * 'cups_compress()' - Compress a buffer of data. |
ef416fc2 | 2091 | */ |
2092 | ||
2093 | static ssize_t /* O - Number of bytes written or -1 */ | |
2094 | cups_compress(cups_file_t *fp, /* I - CUPS file */ | |
2095 | const char *buf, /* I - Buffer */ | |
2096 | size_t bytes) /* I - Number bytes */ | |
2097 | { | |
e07d4801 | 2098 | DEBUG_printf(("7cups_compress(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2099 | CUPS_LLCAST bytes)); |
ecdc0628 | 2100 | |
ef416fc2 | 2101 | /* |
2102 | * Update the CRC... | |
2103 | */ | |
2104 | ||
7e86f2f6 | 2105 | fp->crc = crc32(fp->crc, (const Bytef *)buf, (uInt)bytes); |
ef416fc2 | 2106 | |
2107 | /* | |
2108 | * Deflate the bytes... | |
2109 | */ | |
2110 | ||
2111 | fp->stream.next_in = (Bytef *)buf; | |
7e86f2f6 | 2112 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2113 | |
2114 | while (fp->stream.avail_in > 0) | |
2115 | { | |
2116 | /* | |
2117 | * Flush the current buffer... | |
2118 | */ | |
2119 | ||
e07d4801 | 2120 | DEBUG_printf(("9cups_compress: avail_in=%d, avail_out=%d", |
634763e8 | 2121 | fp->stream.avail_in, fp->stream.avail_out)); |
ecdc0628 | 2122 | |
7e86f2f6 | 2123 | if (fp->stream.avail_out < (uInt)(sizeof(fp->cbuf) / 8)) |
ef416fc2 | 2124 | { |
7e86f2f6 | 2125 | if (cups_write(fp, (char *)fp->cbuf, (size_t)(fp->stream.next_out - fp->cbuf)) < 0) |
ef416fc2 | 2126 | return (-1); |
ecdc0628 | 2127 | |
2128 | fp->stream.next_out = fp->cbuf; | |
2129 | fp->stream.avail_out = sizeof(fp->cbuf); | |
ef416fc2 | 2130 | } |
2131 | ||
2132 | deflate(&(fp->stream), Z_NO_FLUSH); | |
2133 | } | |
2134 | ||
7e86f2f6 | 2135 | return ((ssize_t)bytes); |
ef416fc2 | 2136 | } |
2137 | #endif /* HAVE_LIBZ */ | |
2138 | ||
2139 | ||
2140 | /* | |
22c9029b | 2141 | * 'cups_fill()' - Fill the input buffer. |
ef416fc2 | 2142 | */ |
2143 | ||
2144 | static ssize_t /* O - Number of bytes or -1 */ | |
2145 | cups_fill(cups_file_t *fp) /* I - CUPS file */ | |
2146 | { | |
2147 | ssize_t bytes; /* Number of bytes read */ | |
2148 | #ifdef HAVE_LIBZ | |
c277e2f8 | 2149 | int status; /* Decompression status */ |
ef416fc2 | 2150 | const unsigned char *ptr, /* Pointer into buffer */ |
2151 | *end; /* End of buffer */ | |
2152 | #endif /* HAVE_LIBZ */ | |
2153 | ||
2154 | ||
e07d4801 MS |
2155 | DEBUG_printf(("7cups_fill(fp=%p)", fp)); |
2156 | DEBUG_printf(("9cups_fill: fp->ptr=%p, fp->end=%p, fp->buf=%p, " | |
2157 | "fp->bufpos=" CUPS_LLFMT ", fp->eof=%d", | |
634763e8 | 2158 | fp->ptr, fp->end, fp->buf, CUPS_LLCAST fp->bufpos, fp->eof)); |
ef416fc2 | 2159 | |
2160 | if (fp->ptr && fp->end) | |
c9fc04c6 | 2161 | fp->bufpos += fp->end - fp->buf; |
ef416fc2 | 2162 | |
2163 | #ifdef HAVE_LIBZ | |
e07d4801 | 2164 | DEBUG_printf(("9cups_fill: fp->compressed=%d", fp->compressed)); |
b423cd4c | 2165 | |
ef416fc2 | 2166 | while (!fp->ptr || fp->compressed) |
2167 | { | |
2168 | /* | |
2169 | * Check to see if we have read any data yet; if not, see if we have a | |
2170 | * compressed file... | |
2171 | */ | |
2172 | ||
2173 | if (!fp->ptr) | |
2174 | { | |
2175 | /* | |
2176 | * Reset the file position in case we are seeking... | |
2177 | */ | |
2178 | ||
2179 | fp->compressed = 0; | |
ef416fc2 | 2180 | |
2181 | /* | |
2182 | * Read the first bytes in the file to determine if we have a gzip'd | |
2183 | * file... | |
2184 | */ | |
2185 | ||
fa73b229 | 2186 | if ((bytes = cups_read(fp, (char *)fp->buf, sizeof(fp->buf))) < 0) |
ef416fc2 | 2187 | { |
2188 | /* | |
2189 | * Can't read from file! | |
2190 | */ | |
2191 | ||
e07d4801 | 2192 | DEBUG_printf(("9cups_fill: cups_read() returned " CUPS_LLFMT, |
b423cd4c | 2193 | CUPS_LLCAST bytes)); |
2194 | ||
ef416fc2 | 2195 | return (-1); |
2196 | } | |
2197 | ||
fa73b229 | 2198 | if (bytes < 10 || fp->buf[0] != 0x1f || |
e00b005a | 2199 | (fp->buf[1] & 255) != 0x8b || |
fa73b229 | 2200 | fp->buf[2] != 8 || (fp->buf[3] & 0xe0) != 0) |
ef416fc2 | 2201 | { |
2202 | /* | |
2203 | * Not a gzip'd file! | |
2204 | */ | |
2205 | ||
ef416fc2 | 2206 | fp->ptr = fp->buf; |
2207 | fp->end = fp->buf + bytes; | |
2208 | ||
e07d4801 | 2209 | DEBUG_printf(("9cups_fill: Returning " CUPS_LLFMT, |
c9fc04c6 | 2210 | CUPS_LLCAST bytes)); |
b423cd4c | 2211 | |
ef416fc2 | 2212 | return (bytes); |
2213 | } | |
2214 | ||
2215 | /* | |
2216 | * Parse header junk: extra data, original name, and comment... | |
2217 | */ | |
2218 | ||
fa73b229 | 2219 | ptr = (unsigned char *)fp->buf + 10; |
2220 | end = (unsigned char *)fp->buf + bytes; | |
ef416fc2 | 2221 | |
fa73b229 | 2222 | if (fp->buf[3] & 0x04) |
ef416fc2 | 2223 | { |
2224 | /* | |
2225 | * Skip extra data... | |
2226 | */ | |
2227 | ||
2228 | if ((ptr + 2) > end) | |
2229 | { | |
2230 | /* | |
2231 | * Can't read from file! | |
2232 | */ | |
2233 | ||
2234 | return (-1); | |
2235 | } | |
2236 | ||
2237 | bytes = ((unsigned char)ptr[1] << 8) | (unsigned char)ptr[0]; | |
2238 | ptr += 2 + bytes; | |
2239 | ||
2240 | if (ptr > end) | |
2241 | { | |
2242 | /* | |
2243 | * Can't read from file! | |
2244 | */ | |
2245 | ||
2246 | return (-1); | |
2247 | } | |
2248 | } | |
2249 | ||
fa73b229 | 2250 | if (fp->buf[3] & 0x08) |
ef416fc2 | 2251 | { |
2252 | /* | |
2253 | * Skip original name data... | |
2254 | */ | |
2255 | ||
2256 | while (ptr < end && *ptr) | |
2257 | ptr ++; | |
2258 | ||
2259 | if (ptr < end) | |
2260 | ptr ++; | |
2261 | else | |
2262 | { | |
2263 | /* | |
2264 | * Can't read from file! | |
2265 | */ | |
2266 | ||
2267 | return (-1); | |
2268 | } | |
2269 | } | |
2270 | ||
fa73b229 | 2271 | if (fp->buf[3] & 0x10) |
ef416fc2 | 2272 | { |
2273 | /* | |
2274 | * Skip comment data... | |
2275 | */ | |
2276 | ||
2277 | while (ptr < end && *ptr) | |
2278 | ptr ++; | |
2279 | ||
2280 | if (ptr < end) | |
2281 | ptr ++; | |
2282 | else | |
2283 | { | |
2284 | /* | |
2285 | * Can't read from file! | |
2286 | */ | |
2287 | ||
2288 | return (-1); | |
2289 | } | |
2290 | } | |
2291 | ||
fa73b229 | 2292 | if (fp->buf[3] & 0x02) |
ef416fc2 | 2293 | { |
2294 | /* | |
2295 | * Skip header CRC data... | |
2296 | */ | |
2297 | ||
2298 | ptr += 2; | |
2299 | ||
2300 | if (ptr > end) | |
2301 | { | |
2302 | /* | |
2303 | * Can't read from file! | |
2304 | */ | |
2305 | ||
2306 | return (-1); | |
2307 | } | |
2308 | } | |
2309 | ||
fa73b229 | 2310 | /* |
2311 | * Copy the flate-compressed data to the compression buffer... | |
2312 | */ | |
2313 | ||
2314 | if ((bytes = end - ptr) > 0) | |
07623986 | 2315 | memcpy(fp->cbuf, ptr, (size_t)bytes); |
fa73b229 | 2316 | |
ef416fc2 | 2317 | /* |
2318 | * Setup the decompressor data... | |
2319 | */ | |
2320 | ||
2321 | fp->stream.zalloc = (alloc_func)0; | |
2322 | fp->stream.zfree = (free_func)0; | |
2323 | fp->stream.opaque = (voidpf)0; | |
fa73b229 | 2324 | fp->stream.next_in = (Bytef *)fp->cbuf; |
ef416fc2 | 2325 | fp->stream.next_out = NULL; |
7e86f2f6 | 2326 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2327 | fp->stream.avail_out = 0; |
2328 | fp->crc = crc32(0L, Z_NULL, 0); | |
2329 | ||
2330 | if (inflateInit2(&(fp->stream), -15) != Z_OK) | |
2331 | return (-1); | |
2332 | ||
2333 | fp->compressed = 1; | |
2334 | } | |
2335 | ||
2336 | if (fp->compressed) | |
2337 | { | |
2338 | /* | |
2339 | * If we have reached end-of-file, return immediately... | |
2340 | */ | |
2341 | ||
2342 | if (fp->eof) | |
2343 | return (-1); | |
2344 | ||
2345 | /* | |
2346 | * Fill the decompression buffer as needed... | |
2347 | */ | |
2348 | ||
2349 | if (fp->stream.avail_in == 0) | |
2350 | { | |
2351 | if ((bytes = cups_read(fp, (char *)fp->cbuf, sizeof(fp->cbuf))) <= 0) | |
2352 | return (-1); | |
2353 | ||
2354 | fp->stream.next_in = fp->cbuf; | |
7e86f2f6 | 2355 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2356 | } |
2357 | ||
2358 | /* | |
2359 | * Decompress data from the buffer... | |
2360 | */ | |
2361 | ||
2362 | fp->stream.next_out = (Bytef *)fp->buf; | |
2363 | fp->stream.avail_out = sizeof(fp->buf); | |
2364 | ||
c277e2f8 MS |
2365 | status = inflate(&(fp->stream), Z_NO_FLUSH); |
2366 | ||
2367 | if (fp->stream.next_out > (Bytef *)fp->buf) | |
2368 | fp->crc = crc32(fp->crc, (Bytef *)fp->buf, | |
7e86f2f6 | 2369 | (uInt)(fp->stream.next_out - (Bytef *)fp->buf)); |
c277e2f8 MS |
2370 | |
2371 | if (status == Z_STREAM_END) | |
ef416fc2 | 2372 | { |
2373 | /* | |
2374 | * Read the CRC and length... | |
2375 | */ | |
2376 | ||
2377 | unsigned char trailer[8]; /* Trailer bytes */ | |
2378 | uLong tcrc; /* Trailer CRC */ | |
2379 | ||
2380 | ||
7e86f2f6 | 2381 | if (read(fp->fd, trailer, sizeof(trailer)) < (ssize_t)sizeof(trailer)) |
ef416fc2 | 2382 | { |
2383 | /* | |
2384 | * Can't get it, so mark end-of-file... | |
2385 | */ | |
2386 | ||
2387 | fp->eof = 1; | |
ef416fc2 | 2388 | } |
fa73b229 | 2389 | else |
2390 | { | |
da003234 MS |
2391 | tcrc = ((((((uLong)trailer[3] << 8) | (uLong)trailer[2]) << 8) | |
2392 | (uLong)trailer[1]) << 8) | (uLong)trailer[0]; | |
ef416fc2 | 2393 | |
fa73b229 | 2394 | if (tcrc != fp->crc) |
2395 | { | |
2396 | /* | |
2397 | * Bad CRC, mark end-of-file... | |
2398 | */ | |
2399 | ||
da003234 | 2400 | DEBUG_printf(("9cups_fill: tcrc=%08x != fp->crc=%08x", |
c277e2f8 MS |
2401 | (unsigned int)tcrc, (unsigned int)fp->crc)); |
2402 | ||
fa73b229 | 2403 | fp->eof = 1; |
2404 | ||
2405 | return (-1); | |
2406 | } | |
ef416fc2 | 2407 | |
ef416fc2 | 2408 | /* |
fa73b229 | 2409 | * Otherwise, reset the compressed flag so that we re-read the |
2410 | * file header... | |
ef416fc2 | 2411 | */ |
ef416fc2 | 2412 | |
fa73b229 | 2413 | fp->compressed = 0; |
ef416fc2 | 2414 | } |
ef416fc2 | 2415 | } |
2416 | ||
7e86f2f6 | 2417 | bytes = (ssize_t)sizeof(fp->buf) - (ssize_t)fp->stream.avail_out; |
ef416fc2 | 2418 | |
2419 | /* | |
2420 | * Return the decompressed data... | |
2421 | */ | |
2422 | ||
2423 | fp->ptr = fp->buf; | |
2424 | fp->end = fp->buf + bytes; | |
2425 | ||
fa73b229 | 2426 | if (bytes) |
2427 | return (bytes); | |
ef416fc2 | 2428 | } |
2429 | } | |
2430 | #endif /* HAVE_LIBZ */ | |
2431 | ||
2432 | /* | |
2433 | * Read a buffer's full of data... | |
2434 | */ | |
2435 | ||
2436 | if ((bytes = cups_read(fp, fp->buf, sizeof(fp->buf))) <= 0) | |
2437 | { | |
2438 | /* | |
2439 | * Can't read from file! | |
2440 | */ | |
2441 | ||
2442 | fp->eof = 1; | |
2443 | fp->ptr = fp->buf; | |
2444 | fp->end = fp->buf; | |
2445 | ||
2446 | return (-1); | |
2447 | } | |
2448 | ||
2449 | /* | |
2450 | * Return the bytes we read... | |
2451 | */ | |
2452 | ||
2453 | fp->eof = 0; | |
2454 | fp->ptr = fp->buf; | |
2455 | fp->end = fp->buf + bytes; | |
2456 | ||
2457 | return (bytes); | |
2458 | } | |
2459 | ||
2460 | ||
c7017ecc MS |
2461 | /* |
2462 | * 'cups_open()' - Safely open a file for writing. | |
2463 | * | |
2464 | * We don't allow appending to directories or files that are hard-linked or | |
2465 | * symlinked. | |
2466 | */ | |
2467 | ||
2468 | static int /* O - File descriptor or -1 otherwise */ | |
2469 | cups_open(const char *filename, /* I - Filename */ | |
2470 | int mode) /* I - Open mode */ | |
2471 | { | |
2472 | int fd; /* File descriptor */ | |
2473 | struct stat fileinfo; /* File information */ | |
2474 | #ifndef WIN32 | |
2475 | struct stat linkinfo; /* Link information */ | |
2476 | #endif /* !WIN32 */ | |
2477 | ||
2478 | ||
2479 | /* | |
2480 | * Open the file... | |
2481 | */ | |
2482 | ||
2483 | if ((fd = open(filename, mode, 0666)) < 0) | |
2484 | return (-1); | |
2485 | ||
2486 | /* | |
2487 | * Then verify that the file descriptor doesn't point to a directory or hard- | |
2488 | * linked file. | |
2489 | */ | |
2490 | ||
2491 | if (fstat(fd, &fileinfo)) | |
2492 | { | |
2493 | close(fd); | |
2494 | return (-1); | |
2495 | } | |
2496 | ||
2497 | if (fileinfo.st_nlink != 1) | |
2498 | { | |
2499 | close(fd); | |
2500 | errno = EPERM; | |
2501 | return (-1); | |
2502 | } | |
2503 | ||
2504 | #ifdef WIN32 | |
2505 | if (fileinfo.st_mode & _S_IFDIR) | |
2506 | #else | |
2507 | if (S_ISDIR(fileinfo.st_mode)) | |
2508 | #endif /* WIN32 */ | |
2509 | { | |
2510 | close(fd); | |
2511 | errno = EISDIR; | |
2512 | return (-1); | |
2513 | } | |
2514 | ||
2515 | #ifndef WIN32 | |
2516 | /* | |
2517 | * Then use lstat to determine whether the filename is a symlink... | |
2518 | */ | |
2519 | ||
2520 | if (lstat(filename, &linkinfo)) | |
2521 | { | |
2522 | close(fd); | |
2523 | return (-1); | |
2524 | } | |
2525 | ||
2526 | if (S_ISLNK(linkinfo.st_mode) || | |
2527 | fileinfo.st_dev != linkinfo.st_dev || | |
2528 | fileinfo.st_ino != linkinfo.st_ino || | |
2529 | #ifdef HAVE_ST_GEN | |
2530 | fileinfo.st_gen != linkinfo.st_gen || | |
2531 | #endif /* HAVE_ST_GEN */ | |
2532 | fileinfo.st_nlink != linkinfo.st_nlink || | |
2533 | fileinfo.st_mode != linkinfo.st_mode) | |
2534 | { | |
2535 | /* | |
2536 | * Yes, don't allow! | |
2537 | */ | |
2538 | ||
2539 | close(fd); | |
2540 | errno = EPERM; | |
2541 | return (-1); | |
2542 | } | |
2543 | #endif /* !WIN32 */ | |
2544 | ||
2545 | return (fd); | |
2546 | } | |
2547 | ||
2548 | ||
ef416fc2 | 2549 | /* |
2550 | * 'cups_read()' - Read from a file descriptor. | |
2551 | */ | |
2552 | ||
2553 | static ssize_t /* O - Number of bytes read or -1 */ | |
2554 | cups_read(cups_file_t *fp, /* I - CUPS file */ | |
2555 | char *buf, /* I - Buffer */ | |
2556 | size_t bytes) /* I - Number bytes */ | |
2557 | { | |
2558 | ssize_t total; /* Total bytes read */ | |
2559 | ||
2560 | ||
e07d4801 | 2561 | DEBUG_printf(("7cups_read(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
2562 | CUPS_LLCAST bytes)); |
2563 | ||
ef416fc2 | 2564 | /* |
2565 | * Loop until we read at least 0 bytes... | |
2566 | */ | |
2567 | ||
2568 | for (;;) | |
2569 | { | |
b86bc4cf | 2570 | #ifdef WIN32 |
2571 | if (fp->mode == 's') | |
2572 | total = (ssize_t)recv(fp->fd, buf, (unsigned)bytes, 0); | |
2573 | else | |
2574 | total = (ssize_t)read(fp->fd, buf, (unsigned)bytes); | |
2575 | #else | |
ef416fc2 | 2576 | if (fp->mode == 's') |
2577 | total = recv(fp->fd, buf, bytes, 0); | |
2578 | else | |
2579 | total = read(fp->fd, buf, bytes); | |
b86bc4cf | 2580 | #endif /* WIN32 */ |
ef416fc2 | 2581 | |
e07d4801 | 2582 | DEBUG_printf(("9cups_read: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
634763e8 | 2583 | |
ef416fc2 | 2584 | if (total >= 0) |
2585 | break; | |
2586 | ||
2587 | /* | |
2588 | * Reads can be interrupted by signals and unavailable resources... | |
2589 | */ | |
2590 | ||
2591 | if (errno == EAGAIN || errno == EINTR) | |
2592 | continue; | |
2593 | else | |
2594 | return (-1); | |
2595 | } | |
2596 | ||
2597 | /* | |
2598 | * Return the total number of bytes read... | |
2599 | */ | |
2600 | ||
2601 | return (total); | |
2602 | } | |
2603 | ||
2604 | ||
2605 | /* | |
2606 | * 'cups_write()' - Write to a file descriptor. | |
2607 | */ | |
2608 | ||
2609 | static ssize_t /* O - Number of bytes written or -1 */ | |
2610 | cups_write(cups_file_t *fp, /* I - CUPS file */ | |
2611 | const char *buf, /* I - Buffer */ | |
2612 | size_t bytes) /* I - Number bytes */ | |
2613 | { | |
2abf387c | 2614 | size_t total; /* Total bytes written */ |
2615 | ssize_t count; /* Count this time */ | |
ef416fc2 | 2616 | |
2617 | ||
e07d4801 | 2618 | DEBUG_printf(("7cups_write(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2619 | CUPS_LLCAST bytes)); |
ecdc0628 | 2620 | |
ef416fc2 | 2621 | /* |
2622 | * Loop until all bytes are written... | |
2623 | */ | |
2624 | ||
2625 | total = 0; | |
2626 | while (bytes > 0) | |
2627 | { | |
b86bc4cf | 2628 | #ifdef WIN32 |
2629 | if (fp->mode == 's') | |
2630 | count = (ssize_t)send(fp->fd, buf, (unsigned)bytes, 0); | |
2631 | else | |
2632 | count = (ssize_t)write(fp->fd, buf, (unsigned)bytes); | |
2633 | #else | |
ef416fc2 | 2634 | if (fp->mode == 's') |
2635 | count = send(fp->fd, buf, bytes, 0); | |
2636 | else | |
2637 | count = write(fp->fd, buf, bytes); | |
b86bc4cf | 2638 | #endif /* WIN32 */ |
ef416fc2 | 2639 | |
e07d4801 | 2640 | DEBUG_printf(("9cups_write: count=" CUPS_LLFMT, CUPS_LLCAST count)); |
634763e8 | 2641 | |
ef416fc2 | 2642 | if (count < 0) |
2643 | { | |
2644 | /* | |
2645 | * Writes can be interrupted by signals and unavailable resources... | |
2646 | */ | |
2647 | ||
2648 | if (errno == EAGAIN || errno == EINTR) | |
2649 | continue; | |
2650 | else | |
2651 | return (-1); | |
2652 | } | |
2653 | ||
2654 | /* | |
2655 | * Update the counts for the last write call... | |
2656 | */ | |
2657 | ||
7e86f2f6 MS |
2658 | bytes -= (size_t)count; |
2659 | total += (size_t)count; | |
ef416fc2 | 2660 | buf += count; |
2661 | } | |
2662 | ||
2663 | /* | |
2664 | * Return the total number of bytes written... | |
2665 | */ | |
2666 | ||
b86bc4cf | 2667 | return ((ssize_t)total); |
ef416fc2 | 2668 | } |
2669 | ||
2670 | ||
2671 | /* | |
f2d18633 | 2672 | * End of "$Id$". |
ef416fc2 | 2673 | */ |