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Commit | Line | Data |
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ef416fc2 | 1 | /* |
4ef75dec | 2 | * "$Id: file.c 12297 2014-12-08 19:26:32Z msweet $" |
ef416fc2 | 3 | * |
8eabd901 | 4 | * File functions for CUPS. |
ef416fc2 | 5 | * |
8eabd901 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 | * |
1a18c85c | 11 | * Copyright 2007-2014 by Apple Inc. |
8eabd901 | 12 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
ef416fc2 | 13 | * |
8eabd901 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/". | |
71f63681 MS |
19 | * |
20 | * This file is subject to the Apple OS-Developed Software exception. | |
ef416fc2 | 21 | */ |
22 | ||
23 | /* | |
24 | * Include necessary headers... | |
25 | */ | |
26 | ||
b9faaae1 | 27 | #include "file-private.h" |
c7017ecc MS |
28 | #include <sys/stat.h> |
29 | #include <sys/types.h> | |
ef416fc2 | 30 | |
31 | ||
32 | /* | |
33 | * Local functions... | |
34 | */ | |
35 | ||
36 | #ifdef HAVE_LIBZ | |
37 | static ssize_t cups_compress(cups_file_t *fp, const char *buf, size_t bytes); | |
38 | #endif /* HAVE_LIBZ */ | |
39 | static ssize_t cups_fill(cups_file_t *fp); | |
c7017ecc | 40 | static int cups_open(const char *filename, int mode); |
ef416fc2 | 41 | static ssize_t cups_read(cups_file_t *fp, char *buf, size_t bytes); |
42 | static ssize_t cups_write(cups_file_t *fp, const char *buf, size_t bytes); | |
43 | ||
44 | ||
83e08001 | 45 | #ifndef WIN32 |
22c9029b MS |
46 | /* |
47 | * '_cupsFileCheck()' - Check the permissions of the given filename. | |
48 | */ | |
49 | ||
50 | _cups_fc_result_t /* O - Check result */ | |
51 | _cupsFileCheck( | |
52 | const char *filename, /* I - Filename to check */ | |
53 | _cups_fc_filetype_t filetype, /* I - Type of file checks? */ | |
54 | int dorootchecks, /* I - Check for root permissions? */ | |
55 | _cups_fc_func_t cb, /* I - Callback function */ | |
56 | void *context) /* I - Context pointer for callback */ | |
f228370c | 57 | |
22c9029b MS |
58 | { |
59 | struct stat fileinfo; /* File information */ | |
60 | char message[1024], /* Message string */ | |
61 | temp[1024], /* Parent directory filename */ | |
62 | *ptr; /* Pointer into parent directory */ | |
63 | _cups_fc_result_t result; /* Check result */ | |
64 | ||
65 | ||
88f9aafc MS |
66 | /* |
67 | * Does the filename contain a relative path ("../")? | |
68 | */ | |
69 | ||
70 | if (strstr(filename, "../")) | |
71 | { | |
72 | /* | |
73 | * Yes, fail it! | |
74 | */ | |
75 | ||
76 | result = _CUPS_FILE_CHECK_RELATIVE_PATH; | |
77 | goto finishup; | |
78 | } | |
79 | ||
22c9029b MS |
80 | /* |
81 | * Does the program even exist and is it accessible? | |
82 | */ | |
83 | ||
84 | if (stat(filename, &fileinfo)) | |
85 | { | |
86 | /* | |
87 | * Nope... | |
88 | */ | |
89 | ||
90 | result = _CUPS_FILE_CHECK_MISSING; | |
91 | goto finishup; | |
92 | } | |
93 | ||
94 | /* | |
95 | * Check the execute bit... | |
96 | */ | |
97 | ||
98 | result = _CUPS_FILE_CHECK_OK; | |
99 | ||
100 | switch (filetype) | |
101 | { | |
102 | case _CUPS_FILE_CHECK_DIRECTORY : | |
103 | if (!S_ISDIR(fileinfo.st_mode)) | |
104 | result = _CUPS_FILE_CHECK_WRONG_TYPE; | |
105 | break; | |
106 | ||
107 | default : | |
108 | if (!S_ISREG(fileinfo.st_mode)) | |
109 | result = _CUPS_FILE_CHECK_WRONG_TYPE; | |
110 | break; | |
111 | } | |
112 | ||
113 | if (result) | |
114 | goto finishup; | |
115 | ||
116 | /* | |
117 | * Are we doing root checks? | |
118 | */ | |
119 | ||
120 | if (!dorootchecks) | |
121 | { | |
122 | /* | |
123 | * Nope, so anything (else) goes... | |
124 | */ | |
125 | ||
126 | goto finishup; | |
127 | } | |
128 | ||
129 | /* | |
130 | * Verify permission of the file itself: | |
131 | * | |
132 | * 1. Must be owned by root | |
85dda01c | 133 | * 2. Must not be writable by group |
22c9029b MS |
134 | * 3. Must not be setuid |
135 | * 4. Must not be writable by others | |
136 | */ | |
137 | ||
138 | if (fileinfo.st_uid || /* 1. Must be owned by root */ | |
85dda01c | 139 | (fileinfo.st_mode & S_IWGRP) || /* 2. Must not be writable by group */ |
22c9029b MS |
140 | (fileinfo.st_mode & S_ISUID) || /* 3. Must not be setuid */ |
141 | (fileinfo.st_mode & S_IWOTH)) /* 4. Must not be writable by others */ | |
142 | { | |
143 | result = _CUPS_FILE_CHECK_PERMISSIONS; | |
144 | goto finishup; | |
145 | } | |
146 | ||
147 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY || | |
148 | filetype == _CUPS_FILE_CHECK_FILE_ONLY) | |
149 | goto finishup; | |
150 | ||
151 | /* | |
152 | * Now check the containing directory... | |
153 | */ | |
154 | ||
155 | strlcpy(temp, filename, sizeof(temp)); | |
156 | if ((ptr = strrchr(temp, '/')) != NULL) | |
157 | { | |
158 | if (ptr == temp) | |
159 | ptr[1] = '\0'; | |
160 | else | |
161 | *ptr = '\0'; | |
162 | } | |
163 | ||
164 | if (stat(temp, &fileinfo)) | |
165 | { | |
166 | /* | |
167 | * Doesn't exist?!? | |
168 | */ | |
169 | ||
170 | result = _CUPS_FILE_CHECK_MISSING; | |
171 | filetype = _CUPS_FILE_CHECK_DIRECTORY; | |
172 | filename = temp; | |
173 | ||
174 | goto finishup; | |
175 | } | |
176 | ||
177 | if (fileinfo.st_uid || /* 1. Must be owned by root */ | |
85dda01c | 178 | (fileinfo.st_mode & S_IWGRP) || /* 2. Must not be writable by group */ |
22c9029b MS |
179 | (fileinfo.st_mode & S_ISUID) || /* 3. Must not be setuid */ |
180 | (fileinfo.st_mode & S_IWOTH)) /* 4. Must not be writable by others */ | |
181 | { | |
182 | result = _CUPS_FILE_CHECK_PERMISSIONS; | |
183 | filetype = _CUPS_FILE_CHECK_DIRECTORY; | |
184 | filename = temp; | |
185 | } | |
186 | ||
187 | /* | |
188 | * Common return point... | |
189 | */ | |
190 | ||
191 | finishup: | |
192 | ||
193 | if (cb) | |
194 | { | |
195 | cups_lang_t *lang = cupsLangDefault(); | |
196 | /* Localization information */ | |
197 | ||
198 | switch (result) | |
199 | { | |
200 | case _CUPS_FILE_CHECK_OK : | |
201 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
202 | snprintf(message, sizeof(message), | |
203 | _cupsLangString(lang, _("Directory \"%s\" permissions OK " | |
204 | "(0%o/uid=%d/gid=%d).")), | |
205 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
206 | (int)fileinfo.st_gid); | |
207 | else | |
208 | snprintf(message, sizeof(message), | |
209 | _cupsLangString(lang, _("File \"%s\" permissions OK " | |
210 | "(0%o/uid=%d/gid=%d).")), | |
211 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
212 | (int)fileinfo.st_gid); | |
213 | break; | |
214 | ||
215 | case _CUPS_FILE_CHECK_MISSING : | |
216 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
217 | snprintf(message, sizeof(message), | |
218 | _cupsLangString(lang, _("Directory \"%s\" not available: " | |
219 | "%s")), | |
220 | filename, strerror(errno)); | |
221 | else | |
222 | snprintf(message, sizeof(message), | |
223 | _cupsLangString(lang, _("File \"%s\" not available: %s")), | |
224 | filename, strerror(errno)); | |
225 | break; | |
226 | ||
227 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
228 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
229 | snprintf(message, sizeof(message), | |
230 | _cupsLangString(lang, _("Directory \"%s\" has insecure " | |
231 | "permissions " | |
232 | "(0%o/uid=%d/gid=%d).")), | |
233 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
234 | (int)fileinfo.st_gid); | |
235 | else | |
236 | snprintf(message, sizeof(message), | |
237 | _cupsLangString(lang, _("File \"%s\" has insecure " | |
238 | "permissions " | |
239 | "(0%o/uid=%d/gid=%d).")), | |
240 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
241 | (int)fileinfo.st_gid); | |
242 | break; | |
243 | ||
244 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
245 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
246 | snprintf(message, sizeof(message), | |
247 | _cupsLangString(lang, _("Directory \"%s\" is a file.")), | |
248 | filename); | |
249 | else | |
250 | snprintf(message, sizeof(message), | |
251 | _cupsLangString(lang, _("File \"%s\" is a directory.")), | |
252 | filename); | |
253 | break; | |
88f9aafc MS |
254 | |
255 | case _CUPS_FILE_CHECK_RELATIVE_PATH : | |
256 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
257 | snprintf(message, sizeof(message), | |
258 | _cupsLangString(lang, _("Directory \"%s\" contains a " | |
259 | "relative path.")), filename); | |
260 | else | |
261 | snprintf(message, sizeof(message), | |
262 | _cupsLangString(lang, _("File \"%s\" contains a relative " | |
263 | "path.")), filename); | |
264 | break; | |
22c9029b MS |
265 | } |
266 | ||
267 | (*cb)(context, result, message); | |
268 | } | |
269 | ||
270 | return (result); | |
271 | } | |
272 | ||
273 | ||
274 | /* | |
275 | * '_cupsFileCheckFilter()' - Report file check results as CUPS filter messages. | |
276 | */ | |
277 | ||
278 | void | |
279 | _cupsFileCheckFilter( | |
280 | void *context, /* I - Context pointer (unused) */ | |
281 | _cups_fc_result_t result, /* I - Result code */ | |
282 | const char *message) /* I - Message text */ | |
283 | { | |
284 | const char *prefix; /* Messaging prefix */ | |
285 | ||
286 | ||
321d8d57 MS |
287 | (void)context; |
288 | ||
22c9029b MS |
289 | switch (result) |
290 | { | |
4ef75dec | 291 | default : |
22c9029b MS |
292 | case _CUPS_FILE_CHECK_OK : |
293 | prefix = "DEBUG2"; | |
294 | break; | |
295 | ||
296 | case _CUPS_FILE_CHECK_MISSING : | |
297 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
298 | prefix = "ERROR"; | |
299 | fputs("STATE: +cups-missing-filter-warning\n", stderr); | |
300 | break; | |
301 | ||
302 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
88f9aafc | 303 | case _CUPS_FILE_CHECK_RELATIVE_PATH : |
22c9029b MS |
304 | prefix = "ERROR"; |
305 | fputs("STATE: +cups-insecure-filter-warning\n", stderr); | |
306 | break; | |
307 | } | |
308 | ||
309 | fprintf(stderr, "%s: %s\n", prefix, message); | |
310 | } | |
83e08001 | 311 | #endif /* !WIN32 */ |
22c9029b MS |
312 | |
313 | ||
ef416fc2 | 314 | /* |
315 | * 'cupsFileClose()' - Close a CUPS file. | |
5a738aea | 316 | * |
f3c17241 | 317 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 318 | */ |
319 | ||
320 | int /* O - 0 on success, -1 on error */ | |
321 | cupsFileClose(cups_file_t *fp) /* I - CUPS file */ | |
322 | { | |
323 | int fd; /* File descriptor */ | |
324 | char mode; /* Open mode */ | |
325 | int status; /* Return status */ | |
80ca4592 | 326 | int is_stdio; /* Is a stdio file? */ |
ef416fc2 | 327 | |
328 | ||
e07d4801 | 329 | DEBUG_printf(("cupsFileClose(fp=%p)", fp)); |
ef416fc2 | 330 | |
331 | /* | |
332 | * Range check... | |
333 | */ | |
334 | ||
335 | if (!fp) | |
336 | return (-1); | |
337 | ||
338 | /* | |
339 | * Flush pending write data... | |
340 | */ | |
341 | ||
342 | if (fp->mode == 'w') | |
343 | status = cupsFileFlush(fp); | |
344 | else | |
345 | status = 0; | |
346 | ||
347 | #ifdef HAVE_LIBZ | |
348 | if (fp->compressed && status >= 0) | |
349 | { | |
350 | if (fp->mode == 'r') | |
351 | { | |
352 | /* | |
353 | * Free decompression data... | |
354 | */ | |
355 | ||
356 | inflateEnd(&fp->stream); | |
357 | } | |
358 | else | |
359 | { | |
360 | /* | |
361 | * Flush any remaining compressed data... | |
362 | */ | |
363 | ||
364 | unsigned char trailer[8]; /* Trailer CRC and length */ | |
365 | int done; /* Done writing... */ | |
366 | ||
367 | ||
368 | fp->stream.avail_in = 0; | |
369 | ||
370 | for (done = 0;;) | |
371 | { | |
372 | if (fp->stream.next_out > fp->cbuf) | |
373 | { | |
374 | if (cups_write(fp, (char *)fp->cbuf, | |
1a18c85c | 375 | (size_t)(fp->stream.next_out - fp->cbuf)) < 0) |
ef416fc2 | 376 | status = -1; |
377 | ||
378 | fp->stream.next_out = fp->cbuf; | |
379 | fp->stream.avail_out = sizeof(fp->cbuf); | |
380 | } | |
381 | ||
382 | if (done || status < 0) | |
383 | break; | |
384 | ||
385 | done = deflate(&fp->stream, Z_FINISH) == Z_STREAM_END && | |
386 | fp->stream.next_out == fp->cbuf; | |
387 | } | |
388 | ||
389 | /* | |
390 | * Write the CRC and length... | |
391 | */ | |
392 | ||
1a18c85c MS |
393 | trailer[0] = (unsigned char)fp->crc; |
394 | trailer[1] = (unsigned char)(fp->crc >> 8); | |
395 | trailer[2] = (unsigned char)(fp->crc >> 16); | |
396 | trailer[3] = (unsigned char)(fp->crc >> 24); | |
397 | trailer[4] = (unsigned char)fp->pos; | |
398 | trailer[5] = (unsigned char)(fp->pos >> 8); | |
399 | trailer[6] = (unsigned char)(fp->pos >> 16); | |
400 | trailer[7] = (unsigned char)(fp->pos >> 24); | |
ef416fc2 | 401 | |
402 | if (cups_write(fp, (char *)trailer, 8) < 0) | |
403 | status = -1; | |
404 | ||
405 | /* | |
406 | * Free all memory used by the compression stream... | |
407 | */ | |
408 | ||
409 | deflateEnd(&(fp->stream)); | |
410 | } | |
411 | } | |
412 | #endif /* HAVE_LIBZ */ | |
413 | ||
414 | /* | |
415 | * Save the file descriptor we used and free memory... | |
416 | */ | |
417 | ||
80ca4592 | 418 | fd = fp->fd; |
419 | mode = fp->mode; | |
420 | is_stdio = fp->is_stdio; | |
ef416fc2 | 421 | |
75bd9771 MS |
422 | if (fp->printf_buffer) |
423 | free(fp->printf_buffer); | |
424 | ||
ef416fc2 | 425 | free(fp); |
426 | ||
427 | /* | |
428 | * Close the file, returning the close status... | |
429 | */ | |
430 | ||
431 | if (mode == 's') | |
432 | { | |
1a18c85c | 433 | if (httpAddrClose(NULL, fd) < 0) |
ef416fc2 | 434 | status = -1; |
435 | } | |
80ca4592 | 436 | else if (!is_stdio) |
ef416fc2 | 437 | { |
438 | if (close(fd) < 0) | |
439 | status = -1; | |
440 | } | |
441 | ||
442 | return (status); | |
443 | } | |
444 | ||
445 | ||
446 | /* | |
447 | * 'cupsFileCompression()' - Return whether a file is compressed. | |
5a738aea | 448 | * |
f3c17241 | 449 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 450 | */ |
451 | ||
5a738aea | 452 | int /* O - @code CUPS_FILE_NONE@ or @code CUPS_FILE_GZIP@ */ |
ef416fc2 | 453 | cupsFileCompression(cups_file_t *fp) /* I - CUPS file */ |
454 | { | |
80ca4592 | 455 | return (fp ? fp->compressed : CUPS_FILE_NONE); |
ef416fc2 | 456 | } |
457 | ||
458 | ||
459 | /* | |
460 | * 'cupsFileEOF()' - Return the end-of-file status. | |
5a738aea | 461 | * |
f3c17241 | 462 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 463 | */ |
464 | ||
5a738aea | 465 | int /* O - 1 on end of file, 0 otherwise */ |
ef416fc2 | 466 | cupsFileEOF(cups_file_t *fp) /* I - CUPS file */ |
467 | { | |
80ca4592 | 468 | return (fp ? fp->eof : 1); |
ef416fc2 | 469 | } |
470 | ||
471 | ||
fa73b229 | 472 | /* |
473 | * 'cupsFileFind()' - Find a file using the specified path. | |
474 | * | |
475 | * This function allows the paths in the path string to be separated by | |
476 | * colons (UNIX standard) or semicolons (Windows standard) and stores the | |
477 | * result in the buffer supplied. If the file cannot be found in any of | |
5a738aea MS |
478 | * the supplied paths, @code NULL@ is returned. A @code NULL@ path only |
479 | * matches the current directory. | |
480 | * | |
f3c17241 | 481 | * @since CUPS 1.2/OS X 10.5@ |
fa73b229 | 482 | */ |
483 | ||
5a738aea | 484 | const char * /* O - Full path to file or @code NULL@ if not found */ |
fa73b229 | 485 | cupsFileFind(const char *filename, /* I - File to find */ |
486 | const char *path, /* I - Colon/semicolon-separated path */ | |
4400e98d | 487 | int executable, /* I - 1 = executable files, 0 = any file/dir */ |
488 | char *buffer, /* I - Filename buffer */ | |
fa73b229 | 489 | int bufsize) /* I - Size of filename buffer */ |
490 | { | |
491 | char *bufptr, /* Current position in buffer */ | |
492 | *bufend; /* End of buffer */ | |
493 | ||
494 | ||
495 | /* | |
496 | * Range check input... | |
497 | */ | |
498 | ||
e07d4801 MS |
499 | DEBUG_printf(("cupsFileFind(filename=\"%s\", path=\"%s\", executable=%d, " |
500 | "buffer=%p, bufsize=%d)", filename, path, executable, buffer, | |
501 | bufsize)); | |
502 | ||
fa73b229 | 503 | if (!filename || !buffer || bufsize < 2) |
504 | return (NULL); | |
505 | ||
506 | if (!path) | |
507 | { | |
508 | /* | |
509 | * No path, so check current directory... | |
510 | */ | |
511 | ||
512 | if (!access(filename, 0)) | |
513 | { | |
1a18c85c | 514 | strlcpy(buffer, filename, (size_t)bufsize); |
fa73b229 | 515 | return (buffer); |
516 | } | |
517 | else | |
518 | return (NULL); | |
519 | } | |
520 | ||
521 | /* | |
522 | * Now check each path and return the first match... | |
523 | */ | |
524 | ||
525 | bufend = buffer + bufsize - 1; | |
526 | bufptr = buffer; | |
527 | ||
528 | while (*path) | |
529 | { | |
b86bc4cf | 530 | #ifdef WIN32 |
531 | if (*path == ';' || (*path == ':' && ((bufptr - buffer) > 1 || !isalpha(buffer[0] & 255)))) | |
532 | #else | |
fa73b229 | 533 | if (*path == ';' || *path == ':') |
b86bc4cf | 534 | #endif /* WIN32 */ |
fa73b229 | 535 | { |
536 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
537 | *bufptr++ = '/'; | |
538 | ||
1a18c85c | 539 | strlcpy(bufptr, filename, (size_t)(bufend - bufptr)); |
fa73b229 | 540 | |
4400e98d | 541 | #ifdef WIN32 |
fa73b229 | 542 | if (!access(buffer, 0)) |
4400e98d | 543 | #else |
544 | if (!access(buffer, executable ? X_OK : 0)) | |
545 | #endif /* WIN32 */ | |
b86bc4cf | 546 | { |
e07d4801 | 547 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 548 | return (buffer); |
b86bc4cf | 549 | } |
fa73b229 | 550 | |
551 | bufptr = buffer; | |
552 | } | |
553 | else if (bufptr < bufend) | |
554 | *bufptr++ = *path; | |
555 | ||
556 | path ++; | |
557 | } | |
558 | ||
559 | /* | |
560 | * Check the last path... | |
561 | */ | |
562 | ||
563 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
564 | *bufptr++ = '/'; | |
565 | ||
1a18c85c | 566 | strlcpy(bufptr, filename, (size_t)(bufend - bufptr)); |
fa73b229 | 567 | |
568 | if (!access(buffer, 0)) | |
b86bc4cf | 569 | { |
e07d4801 | 570 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 571 | return (buffer); |
b86bc4cf | 572 | } |
fa73b229 | 573 | else |
b86bc4cf | 574 | { |
e07d4801 | 575 | DEBUG_puts("1cupsFileFind: Returning NULL"); |
fa73b229 | 576 | return (NULL); |
b86bc4cf | 577 | } |
fa73b229 | 578 | } |
579 | ||
580 | ||
ef416fc2 | 581 | /* |
582 | * 'cupsFileFlush()' - Flush pending output. | |
5a738aea | 583 | * |
f3c17241 | 584 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 585 | */ |
586 | ||
587 | int /* O - 0 on success, -1 on error */ | |
588 | cupsFileFlush(cups_file_t *fp) /* I - CUPS file */ | |
589 | { | |
2abf387c | 590 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 591 | |
592 | ||
e07d4801 | 593 | DEBUG_printf(("cupsFileFlush(fp=%p)", fp)); |
ef416fc2 | 594 | |
595 | /* | |
596 | * Range check input... | |
597 | */ | |
598 | ||
599 | if (!fp || fp->mode != 'w') | |
600 | { | |
e07d4801 | 601 | DEBUG_puts("1cupsFileFlush: Attempt to flush a read-only file..."); |
ef416fc2 | 602 | return (-1); |
603 | } | |
604 | ||
b86bc4cf | 605 | bytes = (ssize_t)(fp->ptr - fp->buf); |
ef416fc2 | 606 | |
e07d4801 | 607 | DEBUG_printf(("2cupsFileFlush: Flushing " CUPS_LLFMT " bytes...", |
634763e8 | 608 | CUPS_LLCAST bytes)); |
ecdc0628 | 609 | |
ef416fc2 | 610 | if (bytes > 0) |
611 | { | |
612 | #ifdef HAVE_LIBZ | |
613 | if (fp->compressed) | |
1a18c85c | 614 | bytes = cups_compress(fp, fp->buf, (size_t)bytes); |
ef416fc2 | 615 | else |
616 | #endif /* HAVE_LIBZ */ | |
1a18c85c | 617 | bytes = cups_write(fp, fp->buf, (size_t)bytes); |
ef416fc2 | 618 | |
619 | if (bytes < 0) | |
620 | return (-1); | |
621 | ||
622 | fp->ptr = fp->buf; | |
623 | } | |
f14324a7 | 624 | |
ef416fc2 | 625 | return (0); |
626 | } | |
627 | ||
628 | ||
629 | /* | |
630 | * 'cupsFileGetChar()' - Get a single character from a file. | |
5a738aea | 631 | * |
f3c17241 | 632 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 633 | */ |
634 | ||
5a738aea | 635 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 636 | cupsFileGetChar(cups_file_t *fp) /* I - CUPS file */ |
637 | { | |
638 | /* | |
639 | * Range check input... | |
640 | */ | |
641 | ||
642 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
b86bc4cf | 643 | { |
f14324a7 | 644 | DEBUG_puts("5cupsFileGetChar: Bad arguments!"); |
ef416fc2 | 645 | return (-1); |
b86bc4cf | 646 | } |
ef416fc2 | 647 | |
648 | /* | |
649 | * If the input buffer is empty, try to read more data... | |
650 | */ | |
651 | ||
652 | if (fp->ptr >= fp->end) | |
653 | if (cups_fill(fp) < 0) | |
b86bc4cf | 654 | { |
f14324a7 | 655 | DEBUG_puts("5cupsFileGetChar: Unable to fill buffer!"); |
ef416fc2 | 656 | return (-1); |
b86bc4cf | 657 | } |
ef416fc2 | 658 | |
659 | /* | |
660 | * Return the next character in the buffer... | |
661 | */ | |
662 | ||
f14324a7 | 663 | DEBUG_printf(("5cupsFileGetChar: Returning %d...", *(fp->ptr) & 255)); |
b86bc4cf | 664 | |
634763e8 MS |
665 | fp->pos ++; |
666 | ||
f14324a7 | 667 | DEBUG_printf(("6cupsFileGetChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 668 | |
ef416fc2 | 669 | return (*(fp->ptr)++ & 255); |
670 | } | |
671 | ||
672 | ||
673 | /* | |
22c9029b | 674 | * 'cupsFileGetConf()' - Get a line from a configuration file. |
5a738aea | 675 | * |
f3c17241 | 676 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 677 | */ |
678 | ||
5a738aea | 679 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 680 | cupsFileGetConf(cups_file_t *fp, /* I - CUPS file */ |
681 | char *buf, /* O - String buffer */ | |
682 | size_t buflen, /* I - Size of string buffer */ | |
683 | char **value, /* O - Pointer to value */ | |
684 | int *linenum) /* IO - Current line number */ | |
685 | { | |
686 | char *ptr; /* Pointer into line */ | |
687 | ||
688 | ||
689 | /* | |
690 | * Range check input... | |
691 | */ | |
692 | ||
e07d4801 MS |
693 | DEBUG_printf(("2cupsFileGetConf(fp=%p, buf=%p, buflen=" CUPS_LLFMT |
694 | ", value=%p, linenum=%p)", fp, buf, CUPS_LLCAST buflen, | |
634763e8 MS |
695 | value, linenum)); |
696 | ||
ef416fc2 | 697 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || |
698 | !buf || buflen < 2 || !value) | |
699 | { | |
700 | if (value) | |
701 | *value = NULL; | |
702 | ||
703 | return (NULL); | |
704 | } | |
705 | ||
706 | /* | |
707 | * Read the next non-comment line... | |
708 | */ | |
709 | ||
710 | *value = NULL; | |
f7deaa1a | 711 | |
ef416fc2 | 712 | while (cupsFileGets(fp, buf, buflen)) |
713 | { | |
714 | (*linenum) ++; | |
715 | ||
716 | /* | |
717 | * Strip any comments... | |
718 | */ | |
719 | ||
720 | if ((ptr = strchr(buf, '#')) != NULL) | |
721 | { | |
f7deaa1a | 722 | if (ptr > buf && ptr[-1] == '\\') |
ef416fc2 | 723 | { |
f7deaa1a | 724 | // Unquote the #... |
725 | _cups_strcpy(ptr - 1, ptr); | |
ef416fc2 | 726 | } |
f7deaa1a | 727 | else |
728 | { | |
729 | // Strip the comment and any trailing whitespace... | |
730 | while (ptr > buf) | |
731 | { | |
7cf5915e | 732 | if (!_cups_isspace(ptr[-1])) |
f7deaa1a | 733 | break; |
734 | ||
735 | ptr --; | |
736 | } | |
ef416fc2 | 737 | |
f7deaa1a | 738 | *ptr = '\0'; |
739 | } | |
ef416fc2 | 740 | } |
741 | ||
742 | /* | |
743 | * Strip leading whitespace... | |
744 | */ | |
745 | ||
7cf5915e | 746 | for (ptr = buf; _cups_isspace(*ptr); ptr ++); |
ef416fc2 | 747 | |
748 | if (ptr > buf) | |
749 | _cups_strcpy(buf, ptr); | |
750 | ||
751 | /* | |
752 | * See if there is anything left... | |
753 | */ | |
754 | ||
755 | if (buf[0]) | |
756 | { | |
757 | /* | |
758 | * Yes, grab any value and return... | |
759 | */ | |
760 | ||
761 | for (ptr = buf; *ptr; ptr ++) | |
7cf5915e | 762 | if (_cups_isspace(*ptr)) |
ef416fc2 | 763 | break; |
764 | ||
765 | if (*ptr) | |
766 | { | |
767 | /* | |
768 | * Have a value, skip any other spaces... | |
769 | */ | |
770 | ||
7cf5915e | 771 | while (_cups_isspace(*ptr)) |
ef416fc2 | 772 | *ptr++ = '\0'; |
773 | ||
774 | if (*ptr) | |
775 | *value = ptr; | |
776 | ||
777 | /* | |
778 | * Strip trailing whitespace and > for lines that begin with <... | |
779 | */ | |
780 | ||
781 | ptr += strlen(ptr) - 1; | |
782 | ||
783 | if (buf[0] == '<' && *ptr == '>') | |
784 | *ptr-- = '\0'; | |
785 | else if (buf[0] == '<' && *ptr != '>') | |
786 | { | |
787 | /* | |
788 | * Syntax error... | |
789 | */ | |
790 | ||
791 | *value = NULL; | |
792 | return (buf); | |
793 | } | |
794 | ||
7cf5915e | 795 | while (ptr > *value && _cups_isspace(*ptr)) |
ef416fc2 | 796 | *ptr-- = '\0'; |
797 | } | |
798 | ||
799 | /* | |
800 | * Return the line... | |
801 | */ | |
802 | ||
803 | return (buf); | |
804 | } | |
805 | } | |
806 | ||
807 | return (NULL); | |
808 | } | |
809 | ||
810 | ||
80ca4592 | 811 | /* |
812 | * 'cupsFileGetLine()' - Get a CR and/or LF-terminated line that may | |
813 | * contain binary data. | |
814 | * | |
5a738aea MS |
815 | * This function differs from @link cupsFileGets@ in that the trailing CR |
816 | * and LF are preserved, as is any binary data on the line. The buffer is | |
817 | * nul-terminated, however you should use the returned length to determine | |
80ca4592 | 818 | * the number of bytes on the line. |
5a738aea | 819 | * |
f3c17241 | 820 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 821 | */ |
822 | ||
5a738aea | 823 | size_t /* O - Number of bytes on line or 0 on end of file */ |
80ca4592 | 824 | cupsFileGetLine(cups_file_t *fp, /* I - File to read from */ |
825 | char *buf, /* I - Buffer */ | |
826 | size_t buflen) /* I - Size of buffer */ | |
827 | { | |
828 | int ch; /* Character from file */ | |
829 | char *ptr, /* Current position in line buffer */ | |
830 | *end; /* End of line buffer */ | |
831 | ||
832 | ||
833 | /* | |
834 | * Range check input... | |
835 | */ | |
836 | ||
e07d4801 | 837 | DEBUG_printf(("2cupsFileGetLine(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", |
634763e8 MS |
838 | fp, buf, CUPS_LLCAST buflen)); |
839 | ||
80ca4592 | 840 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 3) |
841 | return (0); | |
842 | ||
843 | /* | |
844 | * Now loop until we have a valid line... | |
845 | */ | |
846 | ||
847 | for (ptr = buf, end = buf + buflen - 2; ptr < end ;) | |
848 | { | |
849 | if (fp->ptr >= fp->end) | |
850 | if (cups_fill(fp) <= 0) | |
851 | break; | |
852 | ||
853 | *ptr++ = ch = *(fp->ptr)++; | |
634763e8 | 854 | fp->pos ++; |
80ca4592 | 855 | |
856 | if (ch == '\r') | |
857 | { | |
858 | /* | |
859 | * Check for CR LF... | |
860 | */ | |
861 | ||
862 | if (fp->ptr >= fp->end) | |
863 | if (cups_fill(fp) <= 0) | |
864 | break; | |
865 | ||
866 | if (*(fp->ptr) == '\n') | |
634763e8 | 867 | { |
80ca4592 | 868 | *ptr++ = *(fp->ptr)++; |
634763e8 MS |
869 | fp->pos ++; |
870 | } | |
80ca4592 | 871 | |
872 | break; | |
873 | } | |
874 | else if (ch == '\n') | |
875 | { | |
876 | /* | |
877 | * Line feed ends a line... | |
878 | */ | |
879 | ||
880 | break; | |
881 | } | |
882 | } | |
883 | ||
884 | *ptr = '\0'; | |
885 | ||
e07d4801 | 886 | DEBUG_printf(("4cupsFileGetLine: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 887 | |
1a18c85c | 888 | return ((size_t)(ptr - buf)); |
80ca4592 | 889 | } |
890 | ||
891 | ||
ef416fc2 | 892 | /* |
893 | * 'cupsFileGets()' - Get a CR and/or LF-terminated line. | |
5a738aea | 894 | * |
f3c17241 | 895 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 896 | */ |
897 | ||
5a738aea | 898 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 899 | cupsFileGets(cups_file_t *fp, /* I - CUPS file */ |
900 | char *buf, /* O - String buffer */ | |
901 | size_t buflen) /* I - Size of string buffer */ | |
902 | { | |
903 | int ch; /* Character from file */ | |
904 | char *ptr, /* Current position in line buffer */ | |
905 | *end; /* End of line buffer */ | |
906 | ||
907 | ||
908 | /* | |
909 | * Range check input... | |
910 | */ | |
911 | ||
e07d4801 | 912 | DEBUG_printf(("2cupsFileGets(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
913 | CUPS_LLCAST buflen)); |
914 | ||
ef416fc2 | 915 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 2) |
916 | return (NULL); | |
917 | ||
918 | /* | |
919 | * Now loop until we have a valid line... | |
920 | */ | |
921 | ||
922 | for (ptr = buf, end = buf + buflen - 1; ptr < end ;) | |
923 | { | |
924 | if (fp->ptr >= fp->end) | |
925 | if (cups_fill(fp) <= 0) | |
926 | { | |
927 | if (ptr == buf) | |
928 | return (NULL); | |
929 | else | |
930 | break; | |
931 | } | |
932 | ||
933 | ch = *(fp->ptr)++; | |
634763e8 | 934 | fp->pos ++; |
ef416fc2 | 935 | |
936 | if (ch == '\r') | |
937 | { | |
938 | /* | |
939 | * Check for CR LF... | |
940 | */ | |
941 | ||
942 | if (fp->ptr >= fp->end) | |
943 | if (cups_fill(fp) <= 0) | |
944 | break; | |
945 | ||
946 | if (*(fp->ptr) == '\n') | |
634763e8 MS |
947 | { |
948 | fp->ptr ++; | |
949 | fp->pos ++; | |
950 | } | |
ef416fc2 | 951 | |
952 | break; | |
953 | } | |
954 | else if (ch == '\n') | |
955 | { | |
956 | /* | |
957 | * Line feed ends a line... | |
958 | */ | |
959 | ||
960 | break; | |
961 | } | |
962 | else | |
1a18c85c | 963 | *ptr++ = (char)ch; |
ef416fc2 | 964 | } |
965 | ||
966 | *ptr = '\0'; | |
967 | ||
e07d4801 | 968 | DEBUG_printf(("4cupsFileGets: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 969 | |
ef416fc2 | 970 | return (buf); |
971 | } | |
972 | ||
973 | ||
974 | /* | |
975 | * 'cupsFileLock()' - Temporarily lock access to a file. | |
5a738aea | 976 | * |
f3c17241 | 977 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 978 | */ |
979 | ||
980 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 981 | cupsFileLock(cups_file_t *fp, /* I - CUPS file */ |
ef416fc2 | 982 | int block) /* I - 1 to wait for the lock, 0 to fail right away */ |
983 | { | |
984 | /* | |
985 | * Range check... | |
986 | */ | |
987 | ||
988 | if (!fp || fp->mode == 's') | |
989 | return (-1); | |
990 | ||
991 | /* | |
992 | * Try the lock... | |
993 | */ | |
994 | ||
995 | #ifdef WIN32 | |
536bc2c6 | 996 | return (_locking(fp->fd, block ? _LK_LOCK : _LK_NBLCK, 0)); |
ef416fc2 | 997 | #else |
998 | return (lockf(fp->fd, block ? F_LOCK : F_TLOCK, 0)); | |
999 | #endif /* WIN32 */ | |
1000 | } | |
1001 | ||
1002 | ||
1003 | /* | |
1004 | * 'cupsFileNumber()' - Return the file descriptor associated with a CUPS file. | |
5a738aea | 1005 | * |
f3c17241 | 1006 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1007 | */ |
1008 | ||
1009 | int /* O - File descriptor */ | |
1010 | cupsFileNumber(cups_file_t *fp) /* I - CUPS file */ | |
1011 | { | |
5a738aea MS |
1012 | if (fp) |
1013 | return (fp->fd); | |
1014 | else | |
1015 | return (-1); | |
ef416fc2 | 1016 | } |
1017 | ||
1018 | ||
1019 | /* | |
1020 | * 'cupsFileOpen()' - Open a CUPS file. | |
5a738aea MS |
1021 | * |
1022 | * The "mode" parameter can be "r" to read, "w" to write, overwriting any | |
1023 | * existing file, "a" to append to an existing file or create a new file, | |
1024 | * or "s" to open a socket connection. | |
1025 | * | |
634763e8 MS |
1026 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1027 | * supplied which enables Flate compression of the file. Compression is | |
1028 | * not supported for the "a" (append) mode. | |
5a738aea MS |
1029 | * |
1030 | * When opening a socket connection, the filename is a string of the form | |
1031 | * "address:port" or "hostname:port". The socket will make an IPv4 or IPv6 | |
1032 | * connection as needed, generally preferring IPv6 connections when there is | |
1033 | * a choice. | |
1034 | * | |
f3c17241 | 1035 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1036 | */ |
1037 | ||
5a738aea | 1038 | cups_file_t * /* O - CUPS file or @code NULL@ if the file or socket cannot be opened */ |
ef416fc2 | 1039 | cupsFileOpen(const char *filename, /* I - Name of file */ |
1040 | const char *mode) /* I - Open mode */ | |
1041 | { | |
1042 | cups_file_t *fp; /* New CUPS file */ | |
1043 | int fd; /* File descriptor */ | |
1044 | char hostname[1024], /* Hostname */ | |
1045 | *portname; /* Port "name" (number or service) */ | |
1046 | http_addrlist_t *addrlist; /* Host address list */ | |
1047 | ||
1048 | ||
e07d4801 | 1049 | DEBUG_printf(("cupsFileOpen(filename=\"%s\", mode=\"%s\")", filename, |
b423cd4c | 1050 | mode)); |
1051 | ||
ef416fc2 | 1052 | /* |
1053 | * Range check input... | |
1054 | */ | |
1055 | ||
1056 | if (!filename || !mode || | |
634763e8 MS |
1057 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1058 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1059 | return (NULL); |
1060 | ||
1061 | /* | |
1062 | * Open the file... | |
1063 | */ | |
1064 | ||
1065 | switch (*mode) | |
1066 | { | |
1067 | case 'a' : /* Append file */ | |
c7017ecc MS |
1068 | fd = cups_open(filename, |
1069 | O_RDWR | O_CREAT | O_APPEND | O_LARGEFILE | O_BINARY); | |
ef416fc2 | 1070 | break; |
1071 | ||
1072 | case 'r' : /* Read file */ | |
b86bc4cf | 1073 | fd = open(filename, O_RDONLY | O_LARGEFILE | O_BINARY, 0); |
ef416fc2 | 1074 | break; |
1075 | ||
1076 | case 'w' : /* Write file */ | |
c7017ecc MS |
1077 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); |
1078 | if (fd < 0 && errno == ENOENT) | |
1079 | { | |
1080 | fd = cups_open(filename, | |
1081 | O_WRONLY | O_CREAT | O_EXCL | O_LARGEFILE | O_BINARY); | |
1082 | if (fd < 0 && errno == EEXIST) | |
1083 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); | |
1084 | } | |
1085 | ||
1086 | if (fd >= 0) | |
1087 | #ifdef WIN32 | |
1088 | _chsize(fd, 0); | |
1089 | #else | |
1090 | ftruncate(fd, 0); | |
1091 | #endif /* WIN32 */ | |
ef416fc2 | 1092 | break; |
1093 | ||
1094 | case 's' : /* Read/write socket */ | |
1095 | strlcpy(hostname, filename, sizeof(hostname)); | |
1096 | if ((portname = strrchr(hostname, ':')) != NULL) | |
1097 | *portname++ = '\0'; | |
1098 | else | |
1099 | return (NULL); | |
1100 | ||
1101 | /* | |
1102 | * Lookup the hostname and service... | |
1103 | */ | |
1104 | ||
1105 | if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL) | |
1106 | return (NULL); | |
1107 | ||
1108 | /* | |
1109 | * Connect to the server... | |
1110 | */ | |
1111 | ||
1112 | if (!httpAddrConnect(addrlist, &fd)) | |
1113 | { | |
1114 | httpAddrFreeList(addrlist); | |
1115 | return (NULL); | |
1116 | } | |
1117 | ||
1118 | httpAddrFreeList(addrlist); | |
1119 | break; | |
1120 | ||
1121 | default : /* Remove bogus compiler warning... */ | |
1122 | return (NULL); | |
1123 | } | |
1124 | ||
1125 | if (fd < 0) | |
1126 | return (NULL); | |
1127 | ||
1128 | /* | |
1129 | * Create the CUPS file structure... | |
1130 | */ | |
1131 | ||
1132 | if ((fp = cupsFileOpenFd(fd, mode)) == NULL) | |
1133 | { | |
1134 | if (*mode == 's') | |
1a18c85c | 1135 | httpAddrClose(NULL, fd); |
ef416fc2 | 1136 | else |
1137 | close(fd); | |
1138 | } | |
1139 | ||
1140 | /* | |
1141 | * Return it... | |
1142 | */ | |
1143 | ||
1144 | return (fp); | |
1145 | } | |
1146 | ||
1147 | /* | |
1148 | * 'cupsFileOpenFd()' - Open a CUPS file using a file descriptor. | |
5a738aea | 1149 | * |
634763e8 MS |
1150 | * The "mode" parameter can be "r" to read, "w" to write, "a" to append, |
1151 | * or "s" to treat the file descriptor as a bidirectional socket connection. | |
5a738aea | 1152 | * |
634763e8 MS |
1153 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1154 | * supplied which enables Flate compression of the file. Compression is | |
1155 | * not supported for the "a" (append) mode. | |
5a738aea | 1156 | * |
f3c17241 | 1157 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1158 | */ |
1159 | ||
5a738aea | 1160 | cups_file_t * /* O - CUPS file or @code NULL@ if the file could not be opened */ |
ef416fc2 | 1161 | cupsFileOpenFd(int fd, /* I - File descriptor */ |
1162 | const char *mode) /* I - Open mode */ | |
1163 | { | |
1164 | cups_file_t *fp; /* New CUPS file */ | |
1165 | ||
1166 | ||
e07d4801 | 1167 | DEBUG_printf(("cupsFileOpenFd(fd=%d, mode=\"%s\")", fd, mode)); |
b423cd4c | 1168 | |
ef416fc2 | 1169 | /* |
1170 | * Range check input... | |
1171 | */ | |
1172 | ||
1173 | if (fd < 0 || !mode || | |
634763e8 MS |
1174 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1175 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1176 | return (NULL); |
1177 | ||
1178 | /* | |
1179 | * Allocate memory... | |
1180 | */ | |
1181 | ||
1182 | if ((fp = calloc(1, sizeof(cups_file_t))) == NULL) | |
1183 | return (NULL); | |
1184 | ||
1185 | /* | |
1186 | * Open the file... | |
1187 | */ | |
1188 | ||
1189 | fp->fd = fd; | |
1190 | ||
1191 | switch (*mode) | |
1192 | { | |
ef416fc2 | 1193 | case 'a' : |
634763e8 MS |
1194 | fp->pos = lseek(fd, 0, SEEK_END); |
1195 | ||
1196 | case 'w' : | |
ef416fc2 | 1197 | fp->mode = 'w'; |
1198 | fp->ptr = fp->buf; | |
1199 | fp->end = fp->buf + sizeof(fp->buf); | |
1200 | ||
1201 | #ifdef HAVE_LIBZ | |
1202 | if (mode[1] >= '1' && mode[1] <= '9') | |
1203 | { | |
1204 | /* | |
1205 | * Open a compressed stream, so write the standard gzip file | |
1206 | * header... | |
1207 | */ | |
1208 | ||
1209 | unsigned char header[10]; /* gzip file header */ | |
1210 | time_t curtime; /* Current time */ | |
1211 | ||
1212 | ||
1213 | curtime = time(NULL); | |
1214 | header[0] = 0x1f; | |
1215 | header[1] = 0x8b; | |
1216 | header[2] = Z_DEFLATED; | |
1217 | header[3] = 0; | |
1a18c85c MS |
1218 | header[4] = (unsigned char)curtime; |
1219 | header[5] = (unsigned char)(curtime >> 8); | |
1220 | header[6] = (unsigned char)(curtime >> 16); | |
1221 | header[7] = (unsigned char)(curtime >> 24); | |
ef416fc2 | 1222 | header[8] = 0; |
1223 | header[9] = 0x03; | |
1224 | ||
1225 | cups_write(fp, (char *)header, 10); | |
1226 | ||
1227 | /* | |
1228 | * Initialize the compressor... | |
1229 | */ | |
1230 | ||
1231 | deflateInit2(&(fp->stream), mode[1] - '0', Z_DEFLATED, -15, 8, | |
1232 | Z_DEFAULT_STRATEGY); | |
1233 | ||
1234 | fp->stream.next_out = fp->cbuf; | |
1235 | fp->stream.avail_out = sizeof(fp->cbuf); | |
1236 | fp->compressed = 1; | |
1237 | fp->crc = crc32(0L, Z_NULL, 0); | |
1238 | } | |
1239 | #endif /* HAVE_LIBZ */ | |
1240 | break; | |
1241 | ||
1242 | case 'r' : | |
1243 | fp->mode = 'r'; | |
1244 | break; | |
1245 | ||
1246 | case 's' : | |
1247 | fp->mode = 's'; | |
1248 | break; | |
1249 | ||
1250 | default : /* Remove bogus compiler warning... */ | |
1251 | return (NULL); | |
1252 | } | |
1253 | ||
1254 | /* | |
1255 | * Don't pass this file to child processes... | |
1256 | */ | |
1257 | ||
1258 | #ifndef WIN32 | |
1259 | fcntl(fp->fd, F_SETFD, fcntl(fp->fd, F_GETFD) | FD_CLOEXEC); | |
1260 | #endif /* !WIN32 */ | |
1261 | ||
1262 | return (fp); | |
1263 | } | |
1264 | ||
1265 | ||
1266 | /* | |
1267 | * 'cupsFilePeekChar()' - Peek at the next character from a file. | |
5a738aea | 1268 | * |
f3c17241 | 1269 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1270 | */ |
1271 | ||
5a738aea | 1272 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 1273 | cupsFilePeekChar(cups_file_t *fp) /* I - CUPS file */ |
1274 | { | |
1275 | /* | |
1276 | * Range check input... | |
1277 | */ | |
1278 | ||
1279 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
1280 | return (-1); | |
1281 | ||
1282 | /* | |
1283 | * If the input buffer is empty, try to read more data... | |
1284 | */ | |
1285 | ||
1286 | if (fp->ptr >= fp->end) | |
1287 | if (cups_fill(fp) < 0) | |
1288 | return (-1); | |
1289 | ||
1290 | /* | |
1291 | * Return the next character in the buffer... | |
1292 | */ | |
1293 | ||
1294 | return (*(fp->ptr) & 255); | |
1295 | } | |
1296 | ||
1297 | ||
1298 | /* | |
1299 | * 'cupsFilePrintf()' - Write a formatted string. | |
5a738aea | 1300 | * |
f3c17241 | 1301 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1302 | */ |
1303 | ||
5a738aea | 1304 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1305 | cupsFilePrintf(cups_file_t *fp, /* I - CUPS file */ |
1306 | const char *format, /* I - Printf-style format string */ | |
1307 | ...) /* I - Additional args as necessary */ | |
1308 | { | |
1309 | va_list ap; /* Argument list */ | |
2abf387c | 1310 | ssize_t bytes; /* Formatted size */ |
ecdc0628 | 1311 | |
ef416fc2 | 1312 | |
e07d4801 | 1313 | DEBUG_printf(("2cupsFilePrintf(fp=%p, format=\"%s\", ...)", fp, format)); |
ef416fc2 | 1314 | |
1315 | if (!fp || !format || (fp->mode != 'w' && fp->mode != 's')) | |
1316 | return (-1); | |
1317 | ||
75bd9771 MS |
1318 | if (!fp->printf_buffer) |
1319 | { | |
1320 | /* | |
1321 | * Start with an 1k printf buffer... | |
1322 | */ | |
1323 | ||
1324 | if ((fp->printf_buffer = malloc(1024)) == NULL) | |
1325 | return (-1); | |
1326 | ||
1327 | fp->printf_size = 1024; | |
1328 | } | |
1329 | ||
ef416fc2 | 1330 | va_start(ap, format); |
75bd9771 | 1331 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); |
ef416fc2 | 1332 | va_end(ap); |
1333 | ||
536bc2c6 | 1334 | if (bytes >= (ssize_t)fp->printf_size) |
75bd9771 MS |
1335 | { |
1336 | /* | |
1337 | * Expand the printf buffer... | |
1338 | */ | |
1339 | ||
1340 | char *temp; /* Temporary buffer pointer */ | |
1341 | ||
1342 | ||
1343 | if (bytes > 65535) | |
1344 | return (-1); | |
1345 | ||
1a18c85c | 1346 | if ((temp = realloc(fp->printf_buffer, (size_t)(bytes + 1))) == NULL) |
75bd9771 MS |
1347 | return (-1); |
1348 | ||
1349 | fp->printf_buffer = temp; | |
1a18c85c | 1350 | fp->printf_size = (size_t)(bytes + 1); |
75bd9771 MS |
1351 | |
1352 | va_start(ap, format); | |
1353 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); | |
1354 | va_end(ap); | |
1355 | } | |
ecdc0628 | 1356 | |
ef416fc2 | 1357 | if (fp->mode == 's') |
634763e8 | 1358 | { |
1a18c85c | 1359 | if (cups_write(fp, fp->printf_buffer, (size_t)bytes) < 0) |
634763e8 MS |
1360 | return (-1); |
1361 | ||
1362 | fp->pos += bytes; | |
1363 | ||
e07d4801 | 1364 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1365 | |
1a18c85c | 1366 | return ((int)bytes); |
634763e8 | 1367 | } |
ef416fc2 | 1368 | |
1369 | if ((fp->ptr + bytes) > fp->end) | |
1370 | if (cupsFileFlush(fp)) | |
1371 | return (-1); | |
1372 | ||
1373 | fp->pos += bytes; | |
1374 | ||
e07d4801 | 1375 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1376 | |
1a18c85c | 1377 | if ((size_t)bytes > sizeof(fp->buf)) |
ef416fc2 | 1378 | { |
1379 | #ifdef HAVE_LIBZ | |
1380 | if (fp->compressed) | |
1a18c85c | 1381 | return ((int)cups_compress(fp, fp->printf_buffer, (size_t)bytes)); |
ef416fc2 | 1382 | else |
1383 | #endif /* HAVE_LIBZ */ | |
1a18c85c | 1384 | return ((int)cups_write(fp, fp->printf_buffer, (size_t)bytes)); |
ef416fc2 | 1385 | } |
1386 | else | |
1387 | { | |
1a18c85c | 1388 | memcpy(fp->ptr, fp->printf_buffer, (size_t)bytes); |
ef416fc2 | 1389 | fp->ptr += bytes; |
1a18c85c | 1390 | return ((int)bytes); |
ef416fc2 | 1391 | } |
1392 | } | |
1393 | ||
1394 | ||
1395 | /* | |
1396 | * 'cupsFilePutChar()' - Write a character. | |
5a738aea | 1397 | * |
f3c17241 | 1398 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1399 | */ |
1400 | ||
1401 | int /* O - 0 on success, -1 on error */ | |
1402 | cupsFilePutChar(cups_file_t *fp, /* I - CUPS file */ | |
1403 | int c) /* I - Character to write */ | |
1404 | { | |
1405 | /* | |
1406 | * Range check input... | |
1407 | */ | |
1408 | ||
1409 | if (!fp || (fp->mode != 'w' && fp->mode != 's')) | |
1410 | return (-1); | |
1411 | ||
1412 | if (fp->mode == 's') | |
1413 | { | |
1414 | /* | |
1415 | * Send character immediately over socket... | |
1416 | */ | |
1417 | ||
1418 | char ch; /* Output character */ | |
1419 | ||
1420 | ||
1a18c85c | 1421 | ch = (char)c; |
ef416fc2 | 1422 | |
1423 | if (send(fp->fd, &ch, 1, 0) < 1) | |
1424 | return (-1); | |
1425 | } | |
1426 | else | |
1427 | { | |
1428 | /* | |
1429 | * Buffer it up... | |
1430 | */ | |
1431 | ||
1432 | if (fp->ptr >= fp->end) | |
1433 | if (cupsFileFlush(fp)) | |
1434 | return (-1); | |
1435 | ||
1a18c85c | 1436 | *(fp->ptr) ++ = (char)c; |
ef416fc2 | 1437 | } |
1438 | ||
1439 | fp->pos ++; | |
1440 | ||
e07d4801 | 1441 | DEBUG_printf(("4cupsFilePutChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1442 | |
ef416fc2 | 1443 | return (0); |
1444 | } | |
1445 | ||
1446 | ||
58dc1933 MS |
1447 | /* |
1448 | * 'cupsFilePutConf()' - Write a configuration line. | |
1449 | * | |
1450 | * This function handles any comment escaping of the value. | |
1451 | * | |
f3c17241 | 1452 | * @since CUPS 1.4/OS X 10.6@ |
58dc1933 MS |
1453 | */ |
1454 | ||
1455 | ssize_t /* O - Number of bytes written or -1 on error */ | |
1456 | cupsFilePutConf(cups_file_t *fp, /* I - CUPS file */ | |
1457 | const char *directive, /* I - Directive */ | |
1458 | const char *value) /* I - Value */ | |
1459 | { | |
1460 | ssize_t bytes, /* Number of bytes written */ | |
1461 | temp; /* Temporary byte count */ | |
1462 | const char *ptr; /* Pointer into value */ | |
1463 | ||
1464 | ||
1465 | if (!fp || !directive || !*directive) | |
1466 | return (-1); | |
1467 | ||
1468 | if ((bytes = cupsFilePuts(fp, directive)) < 0) | |
1469 | return (-1); | |
1470 | ||
1471 | if (cupsFilePutChar(fp, ' ') < 0) | |
1472 | return (-1); | |
1473 | bytes ++; | |
1474 | ||
1475 | if (value && *value) | |
1476 | { | |
1477 | if ((ptr = strchr(value, '#')) != NULL) | |
1478 | { | |
1479 | /* | |
1480 | * Need to quote the first # in the info string... | |
1481 | */ | |
1482 | ||
1a18c85c | 1483 | if ((temp = cupsFileWrite(fp, value, (size_t)(ptr - value))) < 0) |
58dc1933 MS |
1484 | return (-1); |
1485 | bytes += temp; | |
1486 | ||
1487 | if (cupsFilePutChar(fp, '\\') < 0) | |
1488 | return (-1); | |
1489 | bytes ++; | |
1490 | ||
1491 | if ((temp = cupsFilePuts(fp, ptr)) < 0) | |
1492 | return (-1); | |
1493 | bytes += temp; | |
1494 | } | |
1495 | else if ((temp = cupsFilePuts(fp, value)) < 0) | |
1496 | return (-1); | |
1497 | else | |
1498 | bytes += temp; | |
1499 | } | |
1500 | ||
1501 | if (cupsFilePutChar(fp, '\n') < 0) | |
1502 | return (-1); | |
1503 | else | |
1504 | return (bytes + 1); | |
1505 | } | |
1506 | ||
1507 | ||
ef416fc2 | 1508 | /* |
1509 | * 'cupsFilePuts()' - Write a string. | |
5a738aea MS |
1510 | * |
1511 | * Like the @code fputs@ function, no newline is appended to the string. | |
1512 | * | |
f3c17241 | 1513 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1514 | */ |
1515 | ||
5a738aea | 1516 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1517 | cupsFilePuts(cups_file_t *fp, /* I - CUPS file */ |
1518 | const char *s) /* I - String to write */ | |
1519 | { | |
2abf387c | 1520 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 1521 | |
1522 | ||
1523 | /* | |
1524 | * Range check input... | |
1525 | */ | |
1526 | ||
1527 | if (!fp || !s || (fp->mode != 'w' && fp->mode != 's')) | |
1528 | return (-1); | |
1529 | ||
1530 | /* | |
1531 | * Write the string... | |
1532 | */ | |
1533 | ||
1a18c85c | 1534 | bytes = (ssize_t)strlen(s); |
ef416fc2 | 1535 | |
1536 | if (fp->mode == 's') | |
1537 | { | |
1a18c85c | 1538 | if (cups_write(fp, s, (size_t)bytes) < 0) |
ef416fc2 | 1539 | return (-1); |
1540 | ||
1541 | fp->pos += bytes; | |
1542 | ||
e07d4801 | 1543 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1544 | |
1a18c85c | 1545 | return ((int)bytes); |
ef416fc2 | 1546 | } |
1547 | ||
1548 | if ((fp->ptr + bytes) > fp->end) | |
1549 | if (cupsFileFlush(fp)) | |
1550 | return (-1); | |
1551 | ||
1552 | fp->pos += bytes; | |
1553 | ||
e07d4801 | 1554 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1555 | |
1a18c85c | 1556 | if ((size_t)bytes > sizeof(fp->buf)) |
ef416fc2 | 1557 | { |
1558 | #ifdef HAVE_LIBZ | |
1559 | if (fp->compressed) | |
1a18c85c | 1560 | return ((int)cups_compress(fp, s, (size_t)bytes)); |
ef416fc2 | 1561 | else |
1562 | #endif /* HAVE_LIBZ */ | |
1a18c85c | 1563 | return ((int)cups_write(fp, s, (size_t)bytes)); |
ef416fc2 | 1564 | } |
1565 | else | |
1566 | { | |
1a18c85c | 1567 | memcpy(fp->ptr, s, (size_t)bytes); |
ef416fc2 | 1568 | fp->ptr += bytes; |
1a18c85c | 1569 | return ((int)bytes); |
ef416fc2 | 1570 | } |
1571 | } | |
1572 | ||
1573 | ||
1574 | /* | |
1575 | * 'cupsFileRead()' - Read from a file. | |
5a738aea | 1576 | * |
f3c17241 | 1577 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1578 | */ |
1579 | ||
5a738aea | 1580 | ssize_t /* O - Number of bytes read or -1 on error */ |
ef416fc2 | 1581 | cupsFileRead(cups_file_t *fp, /* I - CUPS file */ |
1582 | char *buf, /* O - Buffer */ | |
1583 | size_t bytes) /* I - Number of bytes to read */ | |
1584 | { | |
2abf387c | 1585 | size_t total; /* Total bytes read */ |
1586 | ssize_t count; /* Bytes read */ | |
ef416fc2 | 1587 | |
1588 | ||
e07d4801 | 1589 | DEBUG_printf(("2cupsFileRead(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 1590 | CUPS_LLCAST bytes)); |
ef416fc2 | 1591 | |
1592 | /* | |
1593 | * Range check input... | |
1594 | */ | |
1595 | ||
82f97232 | 1596 | if (!fp || !buf || (fp->mode != 'r' && fp->mode != 's')) |
ef416fc2 | 1597 | return (-1); |
1598 | ||
1599 | if (bytes == 0) | |
1600 | return (0); | |
1601 | ||
1602 | /* | |
1603 | * Loop until all bytes are read... | |
1604 | */ | |
1605 | ||
1606 | total = 0; | |
1607 | while (bytes > 0) | |
1608 | { | |
1609 | if (fp->ptr >= fp->end) | |
1610 | if (cups_fill(fp) <= 0) | |
1611 | { | |
e07d4801 MS |
1612 | DEBUG_printf(("4cupsFileRead: cups_fill() returned -1, total=" |
1613 | CUPS_LLFMT, CUPS_LLCAST total)); | |
ef416fc2 | 1614 | |
1615 | if (total > 0) | |
b86bc4cf | 1616 | return ((ssize_t)total); |
ef416fc2 | 1617 | else |
1618 | return (-1); | |
1619 | } | |
1620 | ||
b86bc4cf | 1621 | count = (ssize_t)(fp->end - fp->ptr); |
1622 | if (count > (ssize_t)bytes) | |
1623 | count = (ssize_t)bytes; | |
ef416fc2 | 1624 | |
1a18c85c | 1625 | memcpy(buf, fp->ptr,(size_t) count); |
ef416fc2 | 1626 | fp->ptr += count; |
634763e8 MS |
1627 | fp->pos += count; |
1628 | ||
e07d4801 | 1629 | DEBUG_printf(("4cupsFileRead: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1630 | |
1631 | /* | |
1632 | * Update the counts for the last read... | |
1633 | */ | |
1634 | ||
1a18c85c MS |
1635 | bytes -= (size_t)count; |
1636 | total += (size_t)count; | |
ef416fc2 | 1637 | buf += count; |
1638 | } | |
1639 | ||
1640 | /* | |
1641 | * Return the total number of bytes read... | |
1642 | */ | |
1643 | ||
e07d4801 | 1644 | DEBUG_printf(("3cupsFileRead: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
ef416fc2 | 1645 | |
b86bc4cf | 1646 | return ((ssize_t)total); |
ef416fc2 | 1647 | } |
1648 | ||
1649 | ||
1650 | /* | |
5a738aea MS |
1651 | * 'cupsFileRewind()' - Set the current file position to the beginning of the |
1652 | * file. | |
1653 | * | |
f3c17241 | 1654 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1655 | */ |
1656 | ||
5a738aea | 1657 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1658 | cupsFileRewind(cups_file_t *fp) /* I - CUPS file */ |
1659 | { | |
80ca4592 | 1660 | /* |
1661 | * Range check input... | |
1662 | */ | |
1663 | ||
e07d4801 MS |
1664 | DEBUG_printf(("cupsFileRewind(fp=%p)", fp)); |
1665 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); | |
634763e8 | 1666 | |
80ca4592 | 1667 | if (!fp || fp->mode != 'r') |
1668 | return (-1); | |
1669 | ||
1670 | /* | |
1671 | * Handle special cases... | |
1672 | */ | |
1673 | ||
634763e8 | 1674 | if (fp->bufpos == 0) |
80ca4592 | 1675 | { |
1676 | /* | |
1677 | * No seeking necessary... | |
1678 | */ | |
1679 | ||
634763e8 MS |
1680 | fp->pos = 0; |
1681 | ||
80ca4592 | 1682 | if (fp->ptr) |
1683 | { | |
1684 | fp->ptr = fp->buf; | |
1685 | fp->eof = 0; | |
1686 | } | |
1687 | ||
e07d4801 | 1688 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1689 | |
80ca4592 | 1690 | return (0); |
1691 | } | |
1692 | ||
1693 | /* | |
1694 | * Otherwise, seek in the file and cleanup any compression buffers... | |
1695 | */ | |
1696 | ||
1697 | #ifdef HAVE_LIBZ | |
1698 | if (fp->compressed) | |
1699 | { | |
1700 | inflateEnd(&fp->stream); | |
1701 | fp->compressed = 0; | |
1702 | } | |
1703 | #endif /* HAVE_LIBZ */ | |
1704 | ||
c9fc04c6 MS |
1705 | if (lseek(fp->fd, 0, SEEK_SET)) |
1706 | { | |
e07d4801 | 1707 | DEBUG_printf(("1cupsFileRewind: lseek failed: %s", strerror(errno))); |
c9fc04c6 MS |
1708 | return (-1); |
1709 | } | |
80ca4592 | 1710 | |
634763e8 MS |
1711 | fp->bufpos = 0; |
1712 | fp->pos = 0; | |
1713 | fp->ptr = NULL; | |
1714 | fp->end = NULL; | |
1715 | fp->eof = 0; | |
1716 | ||
e07d4801 | 1717 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
80ca4592 | 1718 | |
1719 | return (0); | |
ef416fc2 | 1720 | } |
1721 | ||
1722 | ||
1723 | /* | |
1724 | * 'cupsFileSeek()' - Seek in a file. | |
5a738aea | 1725 | * |
f3c17241 | 1726 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1727 | */ |
1728 | ||
5a738aea | 1729 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1730 | cupsFileSeek(cups_file_t *fp, /* I - CUPS file */ |
1731 | off_t pos) /* I - Position in file */ | |
1732 | { | |
2abf387c | 1733 | ssize_t bytes; /* Number bytes in buffer */ |
ef416fc2 | 1734 | |
1735 | ||
e07d4801 | 1736 | DEBUG_printf(("cupsFileSeek(fp=%p, pos=" CUPS_LLFMT ")", fp, |
634763e8 | 1737 | CUPS_LLCAST pos)); |
e07d4801 MS |
1738 | DEBUG_printf(("2cupsFileSeek: fp->pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
1739 | DEBUG_printf(("2cupsFileSeek: fp->ptr=%p, fp->end=%p", fp->ptr, fp->end)); | |
ef416fc2 | 1740 | |
1741 | /* | |
1742 | * Range check input... | |
1743 | */ | |
1744 | ||
1745 | if (!fp || pos < 0 || fp->mode != 'r') | |
1746 | return (-1); | |
1747 | ||
80ca4592 | 1748 | /* |
1749 | * Handle special cases... | |
1750 | */ | |
1751 | ||
1752 | if (pos == 0) | |
1753 | return (cupsFileRewind(fp)); | |
1754 | ||
634763e8 | 1755 | if (fp->ptr) |
b423cd4c | 1756 | { |
634763e8 | 1757 | bytes = (ssize_t)(fp->end - fp->buf); |
b423cd4c | 1758 | |
e07d4801 | 1759 | DEBUG_printf(("2cupsFileSeek: bytes=" CUPS_LLFMT, CUPS_LLCAST bytes)); |
c168a833 | 1760 | |
634763e8 | 1761 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
b423cd4c | 1762 | { |
634763e8 MS |
1763 | /* |
1764 | * No seeking necessary... | |
1765 | */ | |
1766 | ||
1767 | fp->pos = pos; | |
1768 | fp->ptr = fp->buf + pos - fp->bufpos; | |
b423cd4c | 1769 | fp->eof = 0; |
b423cd4c | 1770 | |
634763e8 MS |
1771 | return (pos); |
1772 | } | |
b423cd4c | 1773 | } |
1774 | ||
80ca4592 | 1775 | #ifdef HAVE_LIBZ |
1776 | if (!fp->compressed && !fp->ptr) | |
1777 | { | |
1778 | /* | |
1779 | * Preload a buffer to determine whether the file is compressed... | |
1780 | */ | |
1781 | ||
1782 | if (cups_fill(fp) < 0) | |
1783 | return (-1); | |
1784 | } | |
1785 | #endif /* HAVE_LIBZ */ | |
1786 | ||
ef416fc2 | 1787 | /* |
634763e8 | 1788 | * Seek forwards or backwards... |
ef416fc2 | 1789 | */ |
1790 | ||
ef416fc2 | 1791 | fp->eof = 0; |
1792 | ||
634763e8 | 1793 | if (pos < fp->bufpos) |
ef416fc2 | 1794 | { |
1795 | /* | |
1796 | * Need to seek backwards... | |
1797 | */ | |
1798 | ||
e07d4801 | 1799 | DEBUG_puts("2cupsFileSeek: SEEK BACKWARDS"); |
80ca4592 | 1800 | |
ef416fc2 | 1801 | #ifdef HAVE_LIBZ |
1802 | if (fp->compressed) | |
1803 | { | |
1804 | inflateEnd(&fp->stream); | |
1805 | ||
1806 | lseek(fp->fd, 0, SEEK_SET); | |
634763e8 MS |
1807 | fp->bufpos = 0; |
1808 | fp->pos = 0; | |
1809 | fp->ptr = NULL; | |
1810 | fp->end = NULL; | |
ef416fc2 | 1811 | |
1812 | while ((bytes = cups_fill(fp)) > 0) | |
634763e8 | 1813 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1814 | break; |
1815 | ||
1816 | if (bytes <= 0) | |
1817 | return (-1); | |
80ca4592 | 1818 | |
634763e8 MS |
1819 | fp->ptr = fp->buf + pos - fp->bufpos; |
1820 | fp->pos = pos; | |
ef416fc2 | 1821 | } |
1822 | else | |
1823 | #endif /* HAVE_LIBZ */ | |
1824 | { | |
634763e8 MS |
1825 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1826 | fp->pos = fp->bufpos; | |
1827 | fp->ptr = NULL; | |
1828 | fp->end = NULL; | |
80ca4592 | 1829 | |
e07d4801 | 1830 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1831 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1832 | } |
1833 | } | |
634763e8 | 1834 | else |
ef416fc2 | 1835 | { |
1836 | /* | |
1837 | * Need to seek forwards... | |
1838 | */ | |
1839 | ||
e07d4801 | 1840 | DEBUG_puts("2cupsFileSeek: SEEK FORWARDS"); |
80ca4592 | 1841 | |
ef416fc2 | 1842 | #ifdef HAVE_LIBZ |
80ca4592 | 1843 | if (fp->compressed) |
ef416fc2 | 1844 | { |
1845 | while ((bytes = cups_fill(fp)) > 0) | |
80ca4592 | 1846 | { |
634763e8 | 1847 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1848 | break; |
80ca4592 | 1849 | } |
ef416fc2 | 1850 | |
1851 | if (bytes <= 0) | |
1852 | return (-1); | |
80ca4592 | 1853 | |
634763e8 MS |
1854 | fp->ptr = fp->buf + pos - fp->bufpos; |
1855 | fp->pos = pos; | |
ef416fc2 | 1856 | } |
1857 | else | |
1858 | #endif /* HAVE_LIBZ */ | |
1859 | { | |
634763e8 MS |
1860 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1861 | fp->pos = fp->bufpos; | |
1862 | fp->ptr = NULL; | |
1863 | fp->end = NULL; | |
80ca4592 | 1864 | |
e07d4801 | 1865 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1866 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1867 | } |
1868 | } | |
ef416fc2 | 1869 | |
e07d4801 | 1870 | DEBUG_printf(("2cupsFileSeek: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1871 | |
1872 | return (fp->pos); | |
1873 | } | |
1874 | ||
1875 | ||
80ca4592 | 1876 | /* |
1877 | * 'cupsFileStderr()' - Return a CUPS file associated with stderr. | |
5a738aea | 1878 | * |
f3c17241 | 1879 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 1880 | */ |
1881 | ||
5a738aea | 1882 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1883 | cupsFileStderr(void) |
1884 | { | |
1885 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1886 | ||
1887 | ||
1888 | /* | |
1889 | * Open file descriptor 2 as needed... | |
1890 | */ | |
1891 | ||
1892 | if (!cg->stdio_files[2]) | |
1893 | { | |
1894 | /* | |
1895 | * Flush any pending output on the stdio file... | |
1896 | */ | |
1897 | ||
1898 | fflush(stderr); | |
1899 | ||
1900 | /* | |
1901 | * Open file descriptor 2... | |
1902 | */ | |
1903 | ||
1904 | if ((cg->stdio_files[2] = cupsFileOpenFd(2, "w")) != NULL) | |
1905 | cg->stdio_files[2]->is_stdio = 1; | |
1906 | } | |
1907 | ||
1908 | return (cg->stdio_files[2]); | |
1909 | } | |
1910 | ||
1911 | ||
1912 | /* | |
1913 | * 'cupsFileStdin()' - Return a CUPS file associated with stdin. | |
5a738aea | 1914 | * |
f3c17241 | 1915 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 1916 | */ |
1917 | ||
5a738aea | 1918 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1919 | cupsFileStdin(void) |
1920 | { | |
1921 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1922 | ||
1923 | ||
1924 | /* | |
1925 | * Open file descriptor 0 as needed... | |
1926 | */ | |
1927 | ||
1928 | if (!cg->stdio_files[0]) | |
1929 | { | |
1930 | /* | |
1931 | * Open file descriptor 0... | |
1932 | */ | |
1933 | ||
1934 | if ((cg->stdio_files[0] = cupsFileOpenFd(0, "r")) != NULL) | |
1935 | cg->stdio_files[0]->is_stdio = 1; | |
1936 | } | |
1937 | ||
1938 | return (cg->stdio_files[0]); | |
1939 | } | |
1940 | ||
1941 | ||
1942 | /* | |
1943 | * 'cupsFileStdout()' - Return a CUPS file associated with stdout. | |
5a738aea | 1944 | * |
f3c17241 | 1945 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 1946 | */ |
1947 | ||
5a738aea | 1948 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1949 | cupsFileStdout(void) |
1950 | { | |
1951 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1952 | ||
1953 | ||
1954 | /* | |
1955 | * Open file descriptor 1 as needed... | |
1956 | */ | |
1957 | ||
1958 | if (!cg->stdio_files[1]) | |
1959 | { | |
1960 | /* | |
1961 | * Flush any pending output on the stdio file... | |
1962 | */ | |
1963 | ||
1964 | fflush(stdout); | |
1965 | ||
1966 | /* | |
1967 | * Open file descriptor 1... | |
1968 | */ | |
1969 | ||
1970 | if ((cg->stdio_files[1] = cupsFileOpenFd(1, "w")) != NULL) | |
1971 | cg->stdio_files[1]->is_stdio = 1; | |
1972 | } | |
1973 | ||
1974 | return (cg->stdio_files[1]); | |
1975 | } | |
1976 | ||
1977 | ||
ef416fc2 | 1978 | /* |
1979 | * 'cupsFileTell()' - Return the current file position. | |
5a738aea | 1980 | * |
f3c17241 | 1981 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1982 | */ |
1983 | ||
1984 | off_t /* O - File position */ | |
1985 | cupsFileTell(cups_file_t *fp) /* I - CUPS file */ | |
1986 | { | |
e07d4801 MS |
1987 | DEBUG_printf(("2cupsFileTell(fp=%p)", fp)); |
1988 | DEBUG_printf(("3cupsFileTell: pos=" CUPS_LLFMT, | |
1989 | CUPS_LLCAST (fp ? fp->pos : -1))); | |
634763e8 | 1990 | |
80ca4592 | 1991 | return (fp ? fp->pos : 0); |
ef416fc2 | 1992 | } |
1993 | ||
1994 | ||
1995 | /* | |
1996 | * 'cupsFileUnlock()' - Unlock access to a file. | |
5a738aea | 1997 | * |
f3c17241 | 1998 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1999 | */ |
2000 | ||
2001 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 2002 | cupsFileUnlock(cups_file_t *fp) /* I - CUPS file */ |
ef416fc2 | 2003 | { |
2004 | /* | |
2005 | * Range check... | |
2006 | */ | |
2007 | ||
e07d4801 | 2008 | DEBUG_printf(("cupsFileUnlock(fp=%p)", fp)); |
634763e8 | 2009 | |
ef416fc2 | 2010 | if (!fp || fp->mode == 's') |
2011 | return (-1); | |
2012 | ||
2013 | /* | |
2014 | * Unlock... | |
2015 | */ | |
2016 | ||
2017 | #ifdef WIN32 | |
536bc2c6 | 2018 | return (_locking(fp->fd, _LK_UNLCK, 0)); |
ef416fc2 | 2019 | #else |
2020 | return (lockf(fp->fd, F_ULOCK, 0)); | |
2021 | #endif /* WIN32 */ | |
2022 | } | |
2023 | ||
2024 | ||
2025 | /* | |
2026 | * 'cupsFileWrite()' - Write to a file. | |
5a738aea | 2027 | * |
f3c17241 | 2028 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 2029 | */ |
2030 | ||
5a738aea | 2031 | ssize_t /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 2032 | cupsFileWrite(cups_file_t *fp, /* I - CUPS file */ |
2033 | const char *buf, /* I - Buffer */ | |
2034 | size_t bytes) /* I - Number of bytes to write */ | |
2035 | { | |
2036 | /* | |
2037 | * Range check input... | |
2038 | */ | |
2039 | ||
e07d4801 | 2040 | DEBUG_printf(("2cupsFileWrite(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", |
634763e8 MS |
2041 | fp, buf, CUPS_LLCAST bytes)); |
2042 | ||
82f97232 | 2043 | if (!fp || !buf || (fp->mode != 'w' && fp->mode != 's')) |
ef416fc2 | 2044 | return (-1); |
2045 | ||
2046 | if (bytes == 0) | |
2047 | return (0); | |
2048 | ||
2049 | /* | |
2050 | * Write the buffer... | |
2051 | */ | |
2052 | ||
2053 | if (fp->mode == 's') | |
2054 | { | |
2055 | if (cups_write(fp, buf, bytes) < 0) | |
2056 | return (-1); | |
2057 | ||
b86bc4cf | 2058 | fp->pos += (off_t)bytes; |
ef416fc2 | 2059 | |
e07d4801 | 2060 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2061 | |
b86bc4cf | 2062 | return ((ssize_t)bytes); |
ef416fc2 | 2063 | } |
2064 | ||
2065 | if ((fp->ptr + bytes) > fp->end) | |
2066 | if (cupsFileFlush(fp)) | |
2067 | return (-1); | |
2068 | ||
b86bc4cf | 2069 | fp->pos += (off_t)bytes; |
ef416fc2 | 2070 | |
e07d4801 | 2071 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2072 | |
ef416fc2 | 2073 | if (bytes > sizeof(fp->buf)) |
2074 | { | |
2075 | #ifdef HAVE_LIBZ | |
2076 | if (fp->compressed) | |
2077 | return (cups_compress(fp, buf, bytes)); | |
2078 | else | |
2079 | #endif /* HAVE_LIBZ */ | |
2080 | return (cups_write(fp, buf, bytes)); | |
2081 | } | |
2082 | else | |
2083 | { | |
2084 | memcpy(fp->ptr, buf, bytes); | |
2085 | fp->ptr += bytes; | |
b86bc4cf | 2086 | return ((ssize_t)bytes); |
ef416fc2 | 2087 | } |
2088 | } | |
2089 | ||
2090 | ||
2091 | #ifdef HAVE_LIBZ | |
2092 | /* | |
22c9029b | 2093 | * 'cups_compress()' - Compress a buffer of data. |
ef416fc2 | 2094 | */ |
2095 | ||
2096 | static ssize_t /* O - Number of bytes written or -1 */ | |
2097 | cups_compress(cups_file_t *fp, /* I - CUPS file */ | |
2098 | const char *buf, /* I - Buffer */ | |
2099 | size_t bytes) /* I - Number bytes */ | |
2100 | { | |
e07d4801 | 2101 | DEBUG_printf(("7cups_compress(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2102 | CUPS_LLCAST bytes)); |
ecdc0628 | 2103 | |
ef416fc2 | 2104 | /* |
2105 | * Update the CRC... | |
2106 | */ | |
2107 | ||
1a18c85c | 2108 | fp->crc = crc32(fp->crc, (const Bytef *)buf, (uInt)bytes); |
ef416fc2 | 2109 | |
2110 | /* | |
2111 | * Deflate the bytes... | |
2112 | */ | |
2113 | ||
2114 | fp->stream.next_in = (Bytef *)buf; | |
1a18c85c | 2115 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2116 | |
2117 | while (fp->stream.avail_in > 0) | |
2118 | { | |
2119 | /* | |
2120 | * Flush the current buffer... | |
2121 | */ | |
2122 | ||
e07d4801 | 2123 | DEBUG_printf(("9cups_compress: avail_in=%d, avail_out=%d", |
634763e8 | 2124 | fp->stream.avail_in, fp->stream.avail_out)); |
ecdc0628 | 2125 | |
1a18c85c | 2126 | if (fp->stream.avail_out < (uInt)(sizeof(fp->cbuf) / 8)) |
ef416fc2 | 2127 | { |
1a18c85c | 2128 | if (cups_write(fp, (char *)fp->cbuf, (size_t)(fp->stream.next_out - fp->cbuf)) < 0) |
ef416fc2 | 2129 | return (-1); |
ecdc0628 | 2130 | |
2131 | fp->stream.next_out = fp->cbuf; | |
2132 | fp->stream.avail_out = sizeof(fp->cbuf); | |
ef416fc2 | 2133 | } |
2134 | ||
2135 | deflate(&(fp->stream), Z_NO_FLUSH); | |
2136 | } | |
2137 | ||
1a18c85c | 2138 | return ((ssize_t)bytes); |
ef416fc2 | 2139 | } |
2140 | #endif /* HAVE_LIBZ */ | |
2141 | ||
2142 | ||
2143 | /* | |
22c9029b | 2144 | * 'cups_fill()' - Fill the input buffer. |
ef416fc2 | 2145 | */ |
2146 | ||
2147 | static ssize_t /* O - Number of bytes or -1 */ | |
2148 | cups_fill(cups_file_t *fp) /* I - CUPS file */ | |
2149 | { | |
2150 | ssize_t bytes; /* Number of bytes read */ | |
2151 | #ifdef HAVE_LIBZ | |
c277e2f8 | 2152 | int status; /* Decompression status */ |
ef416fc2 | 2153 | const unsigned char *ptr, /* Pointer into buffer */ |
2154 | *end; /* End of buffer */ | |
2155 | #endif /* HAVE_LIBZ */ | |
2156 | ||
2157 | ||
e07d4801 MS |
2158 | DEBUG_printf(("7cups_fill(fp=%p)", fp)); |
2159 | DEBUG_printf(("9cups_fill: fp->ptr=%p, fp->end=%p, fp->buf=%p, " | |
2160 | "fp->bufpos=" CUPS_LLFMT ", fp->eof=%d", | |
634763e8 | 2161 | fp->ptr, fp->end, fp->buf, CUPS_LLCAST fp->bufpos, fp->eof)); |
ef416fc2 | 2162 | |
2163 | if (fp->ptr && fp->end) | |
c9fc04c6 | 2164 | fp->bufpos += fp->end - fp->buf; |
ef416fc2 | 2165 | |
2166 | #ifdef HAVE_LIBZ | |
e07d4801 | 2167 | DEBUG_printf(("9cups_fill: fp->compressed=%d", fp->compressed)); |
b423cd4c | 2168 | |
ef416fc2 | 2169 | while (!fp->ptr || fp->compressed) |
2170 | { | |
2171 | /* | |
2172 | * Check to see if we have read any data yet; if not, see if we have a | |
2173 | * compressed file... | |
2174 | */ | |
2175 | ||
2176 | if (!fp->ptr) | |
2177 | { | |
2178 | /* | |
2179 | * Reset the file position in case we are seeking... | |
2180 | */ | |
2181 | ||
2182 | fp->compressed = 0; | |
ef416fc2 | 2183 | |
2184 | /* | |
2185 | * Read the first bytes in the file to determine if we have a gzip'd | |
2186 | * file... | |
2187 | */ | |
2188 | ||
fa73b229 | 2189 | if ((bytes = cups_read(fp, (char *)fp->buf, sizeof(fp->buf))) < 0) |
ef416fc2 | 2190 | { |
2191 | /* | |
2192 | * Can't read from file! | |
2193 | */ | |
2194 | ||
e07d4801 | 2195 | DEBUG_printf(("9cups_fill: cups_read() returned " CUPS_LLFMT, |
b423cd4c | 2196 | CUPS_LLCAST bytes)); |
2197 | ||
ef416fc2 | 2198 | return (-1); |
2199 | } | |
2200 | ||
fa73b229 | 2201 | if (bytes < 10 || fp->buf[0] != 0x1f || |
e00b005a | 2202 | (fp->buf[1] & 255) != 0x8b || |
fa73b229 | 2203 | fp->buf[2] != 8 || (fp->buf[3] & 0xe0) != 0) |
ef416fc2 | 2204 | { |
2205 | /* | |
2206 | * Not a gzip'd file! | |
2207 | */ | |
2208 | ||
ef416fc2 | 2209 | fp->ptr = fp->buf; |
2210 | fp->end = fp->buf + bytes; | |
2211 | ||
e07d4801 | 2212 | DEBUG_printf(("9cups_fill: Returning " CUPS_LLFMT, |
c9fc04c6 | 2213 | CUPS_LLCAST bytes)); |
b423cd4c | 2214 | |
ef416fc2 | 2215 | return (bytes); |
2216 | } | |
2217 | ||
2218 | /* | |
2219 | * Parse header junk: extra data, original name, and comment... | |
2220 | */ | |
2221 | ||
fa73b229 | 2222 | ptr = (unsigned char *)fp->buf + 10; |
2223 | end = (unsigned char *)fp->buf + bytes; | |
ef416fc2 | 2224 | |
fa73b229 | 2225 | if (fp->buf[3] & 0x04) |
ef416fc2 | 2226 | { |
2227 | /* | |
2228 | * Skip extra data... | |
2229 | */ | |
2230 | ||
2231 | if ((ptr + 2) > end) | |
2232 | { | |
2233 | /* | |
2234 | * Can't read from file! | |
2235 | */ | |
2236 | ||
2237 | return (-1); | |
2238 | } | |
2239 | ||
2240 | bytes = ((unsigned char)ptr[1] << 8) | (unsigned char)ptr[0]; | |
2241 | ptr += 2 + bytes; | |
2242 | ||
2243 | if (ptr > end) | |
2244 | { | |
2245 | /* | |
2246 | * Can't read from file! | |
2247 | */ | |
2248 | ||
2249 | return (-1); | |
2250 | } | |
2251 | } | |
2252 | ||
fa73b229 | 2253 | if (fp->buf[3] & 0x08) |
ef416fc2 | 2254 | { |
2255 | /* | |
2256 | * Skip original name data... | |
2257 | */ | |
2258 | ||
2259 | while (ptr < end && *ptr) | |
2260 | ptr ++; | |
2261 | ||
2262 | if (ptr < end) | |
2263 | ptr ++; | |
2264 | else | |
2265 | { | |
2266 | /* | |
2267 | * Can't read from file! | |
2268 | */ | |
2269 | ||
2270 | return (-1); | |
2271 | } | |
2272 | } | |
2273 | ||
fa73b229 | 2274 | if (fp->buf[3] & 0x10) |
ef416fc2 | 2275 | { |
2276 | /* | |
2277 | * Skip comment data... | |
2278 | */ | |
2279 | ||
2280 | while (ptr < end && *ptr) | |
2281 | ptr ++; | |
2282 | ||
2283 | if (ptr < end) | |
2284 | ptr ++; | |
2285 | else | |
2286 | { | |
2287 | /* | |
2288 | * Can't read from file! | |
2289 | */ | |
2290 | ||
2291 | return (-1); | |
2292 | } | |
2293 | } | |
2294 | ||
fa73b229 | 2295 | if (fp->buf[3] & 0x02) |
ef416fc2 | 2296 | { |
2297 | /* | |
2298 | * Skip header CRC data... | |
2299 | */ | |
2300 | ||
2301 | ptr += 2; | |
2302 | ||
2303 | if (ptr > end) | |
2304 | { | |
2305 | /* | |
2306 | * Can't read from file! | |
2307 | */ | |
2308 | ||
2309 | return (-1); | |
2310 | } | |
2311 | } | |
2312 | ||
fa73b229 | 2313 | /* |
2314 | * Copy the flate-compressed data to the compression buffer... | |
2315 | */ | |
2316 | ||
2317 | if ((bytes = end - ptr) > 0) | |
1a18c85c | 2318 | memcpy(fp->cbuf, ptr, (size_t)bytes); |
fa73b229 | 2319 | |
ef416fc2 | 2320 | /* |
2321 | * Setup the decompressor data... | |
2322 | */ | |
2323 | ||
2324 | fp->stream.zalloc = (alloc_func)0; | |
2325 | fp->stream.zfree = (free_func)0; | |
2326 | fp->stream.opaque = (voidpf)0; | |
fa73b229 | 2327 | fp->stream.next_in = (Bytef *)fp->cbuf; |
ef416fc2 | 2328 | fp->stream.next_out = NULL; |
1a18c85c | 2329 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2330 | fp->stream.avail_out = 0; |
2331 | fp->crc = crc32(0L, Z_NULL, 0); | |
2332 | ||
2333 | if (inflateInit2(&(fp->stream), -15) != Z_OK) | |
2334 | return (-1); | |
2335 | ||
2336 | fp->compressed = 1; | |
2337 | } | |
2338 | ||
2339 | if (fp->compressed) | |
2340 | { | |
2341 | /* | |
2342 | * If we have reached end-of-file, return immediately... | |
2343 | */ | |
2344 | ||
2345 | if (fp->eof) | |
2346 | return (-1); | |
2347 | ||
2348 | /* | |
2349 | * Fill the decompression buffer as needed... | |
2350 | */ | |
2351 | ||
2352 | if (fp->stream.avail_in == 0) | |
2353 | { | |
2354 | if ((bytes = cups_read(fp, (char *)fp->cbuf, sizeof(fp->cbuf))) <= 0) | |
2355 | return (-1); | |
2356 | ||
2357 | fp->stream.next_in = fp->cbuf; | |
1a18c85c | 2358 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2359 | } |
2360 | ||
2361 | /* | |
2362 | * Decompress data from the buffer... | |
2363 | */ | |
2364 | ||
2365 | fp->stream.next_out = (Bytef *)fp->buf; | |
2366 | fp->stream.avail_out = sizeof(fp->buf); | |
2367 | ||
c277e2f8 MS |
2368 | status = inflate(&(fp->stream), Z_NO_FLUSH); |
2369 | ||
2370 | if (fp->stream.next_out > (Bytef *)fp->buf) | |
2371 | fp->crc = crc32(fp->crc, (Bytef *)fp->buf, | |
1a18c85c | 2372 | (uInt)(fp->stream.next_out - (Bytef *)fp->buf)); |
c277e2f8 MS |
2373 | |
2374 | if (status == Z_STREAM_END) | |
ef416fc2 | 2375 | { |
2376 | /* | |
2377 | * Read the CRC and length... | |
2378 | */ | |
2379 | ||
2380 | unsigned char trailer[8]; /* Trailer bytes */ | |
2381 | uLong tcrc; /* Trailer CRC */ | |
2382 | ||
2383 | ||
1a18c85c | 2384 | if (read(fp->fd, trailer, sizeof(trailer)) < (ssize_t)sizeof(trailer)) |
ef416fc2 | 2385 | { |
2386 | /* | |
2387 | * Can't get it, so mark end-of-file... | |
2388 | */ | |
2389 | ||
2390 | fp->eof = 1; | |
ef416fc2 | 2391 | } |
fa73b229 | 2392 | else |
2393 | { | |
8eabd901 MS |
2394 | tcrc = ((((((uLong)trailer[3] << 8) | (uLong)trailer[2]) << 8) | |
2395 | (uLong)trailer[1]) << 8) | (uLong)trailer[0]; | |
ef416fc2 | 2396 | |
fa73b229 | 2397 | if (tcrc != fp->crc) |
2398 | { | |
2399 | /* | |
2400 | * Bad CRC, mark end-of-file... | |
2401 | */ | |
2402 | ||
8eabd901 | 2403 | DEBUG_printf(("9cups_fill: tcrc=%08x != fp->crc=%08x", |
c277e2f8 MS |
2404 | (unsigned int)tcrc, (unsigned int)fp->crc)); |
2405 | ||
fa73b229 | 2406 | fp->eof = 1; |
2407 | ||
2408 | return (-1); | |
2409 | } | |
ef416fc2 | 2410 | |
ef416fc2 | 2411 | /* |
fa73b229 | 2412 | * Otherwise, reset the compressed flag so that we re-read the |
2413 | * file header... | |
ef416fc2 | 2414 | */ |
ef416fc2 | 2415 | |
fa73b229 | 2416 | fp->compressed = 0; |
ef416fc2 | 2417 | } |
ef416fc2 | 2418 | } |
2419 | ||
1a18c85c | 2420 | bytes = (ssize_t)sizeof(fp->buf) - (ssize_t)fp->stream.avail_out; |
ef416fc2 | 2421 | |
2422 | /* | |
2423 | * Return the decompressed data... | |
2424 | */ | |
2425 | ||
2426 | fp->ptr = fp->buf; | |
2427 | fp->end = fp->buf + bytes; | |
2428 | ||
fa73b229 | 2429 | if (bytes) |
2430 | return (bytes); | |
ef416fc2 | 2431 | } |
2432 | } | |
2433 | #endif /* HAVE_LIBZ */ | |
2434 | ||
2435 | /* | |
2436 | * Read a buffer's full of data... | |
2437 | */ | |
2438 | ||
2439 | if ((bytes = cups_read(fp, fp->buf, sizeof(fp->buf))) <= 0) | |
2440 | { | |
2441 | /* | |
2442 | * Can't read from file! | |
2443 | */ | |
2444 | ||
2445 | fp->eof = 1; | |
2446 | fp->ptr = fp->buf; | |
2447 | fp->end = fp->buf; | |
2448 | ||
2449 | return (-1); | |
2450 | } | |
2451 | ||
2452 | /* | |
2453 | * Return the bytes we read... | |
2454 | */ | |
2455 | ||
2456 | fp->eof = 0; | |
2457 | fp->ptr = fp->buf; | |
2458 | fp->end = fp->buf + bytes; | |
2459 | ||
2460 | return (bytes); | |
2461 | } | |
2462 | ||
2463 | ||
c7017ecc MS |
2464 | /* |
2465 | * 'cups_open()' - Safely open a file for writing. | |
2466 | * | |
2467 | * We don't allow appending to directories or files that are hard-linked or | |
2468 | * symlinked. | |
2469 | */ | |
2470 | ||
2471 | static int /* O - File descriptor or -1 otherwise */ | |
2472 | cups_open(const char *filename, /* I - Filename */ | |
2473 | int mode) /* I - Open mode */ | |
2474 | { | |
2475 | int fd; /* File descriptor */ | |
2476 | struct stat fileinfo; /* File information */ | |
2477 | #ifndef WIN32 | |
2478 | struct stat linkinfo; /* Link information */ | |
2479 | #endif /* !WIN32 */ | |
2480 | ||
2481 | ||
2482 | /* | |
2483 | * Open the file... | |
2484 | */ | |
2485 | ||
2486 | if ((fd = open(filename, mode, 0666)) < 0) | |
2487 | return (-1); | |
2488 | ||
2489 | /* | |
2490 | * Then verify that the file descriptor doesn't point to a directory or hard- | |
2491 | * linked file. | |
2492 | */ | |
2493 | ||
2494 | if (fstat(fd, &fileinfo)) | |
2495 | { | |
2496 | close(fd); | |
2497 | return (-1); | |
2498 | } | |
2499 | ||
2500 | if (fileinfo.st_nlink != 1) | |
2501 | { | |
2502 | close(fd); | |
2503 | errno = EPERM; | |
2504 | return (-1); | |
2505 | } | |
2506 | ||
2507 | #ifdef WIN32 | |
2508 | if (fileinfo.st_mode & _S_IFDIR) | |
2509 | #else | |
2510 | if (S_ISDIR(fileinfo.st_mode)) | |
2511 | #endif /* WIN32 */ | |
2512 | { | |
2513 | close(fd); | |
2514 | errno = EISDIR; | |
2515 | return (-1); | |
2516 | } | |
2517 | ||
2518 | #ifndef WIN32 | |
2519 | /* | |
2520 | * Then use lstat to determine whether the filename is a symlink... | |
2521 | */ | |
2522 | ||
2523 | if (lstat(filename, &linkinfo)) | |
2524 | { | |
2525 | close(fd); | |
2526 | return (-1); | |
2527 | } | |
2528 | ||
2529 | if (S_ISLNK(linkinfo.st_mode) || | |
2530 | fileinfo.st_dev != linkinfo.st_dev || | |
2531 | fileinfo.st_ino != linkinfo.st_ino || | |
2532 | #ifdef HAVE_ST_GEN | |
2533 | fileinfo.st_gen != linkinfo.st_gen || | |
2534 | #endif /* HAVE_ST_GEN */ | |
2535 | fileinfo.st_nlink != linkinfo.st_nlink || | |
2536 | fileinfo.st_mode != linkinfo.st_mode) | |
2537 | { | |
2538 | /* | |
2539 | * Yes, don't allow! | |
2540 | */ | |
2541 | ||
2542 | close(fd); | |
2543 | errno = EPERM; | |
2544 | return (-1); | |
2545 | } | |
2546 | #endif /* !WIN32 */ | |
2547 | ||
2548 | return (fd); | |
2549 | } | |
2550 | ||
2551 | ||
ef416fc2 | 2552 | /* |
2553 | * 'cups_read()' - Read from a file descriptor. | |
2554 | */ | |
2555 | ||
2556 | static ssize_t /* O - Number of bytes read or -1 */ | |
2557 | cups_read(cups_file_t *fp, /* I - CUPS file */ | |
2558 | char *buf, /* I - Buffer */ | |
2559 | size_t bytes) /* I - Number bytes */ | |
2560 | { | |
2561 | ssize_t total; /* Total bytes read */ | |
2562 | ||
2563 | ||
e07d4801 | 2564 | DEBUG_printf(("7cups_read(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
2565 | CUPS_LLCAST bytes)); |
2566 | ||
ef416fc2 | 2567 | /* |
2568 | * Loop until we read at least 0 bytes... | |
2569 | */ | |
2570 | ||
2571 | for (;;) | |
2572 | { | |
b86bc4cf | 2573 | #ifdef WIN32 |
2574 | if (fp->mode == 's') | |
2575 | total = (ssize_t)recv(fp->fd, buf, (unsigned)bytes, 0); | |
2576 | else | |
2577 | total = (ssize_t)read(fp->fd, buf, (unsigned)bytes); | |
2578 | #else | |
ef416fc2 | 2579 | if (fp->mode == 's') |
2580 | total = recv(fp->fd, buf, bytes, 0); | |
2581 | else | |
2582 | total = read(fp->fd, buf, bytes); | |
b86bc4cf | 2583 | #endif /* WIN32 */ |
ef416fc2 | 2584 | |
e07d4801 | 2585 | DEBUG_printf(("9cups_read: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
634763e8 | 2586 | |
ef416fc2 | 2587 | if (total >= 0) |
2588 | break; | |
2589 | ||
2590 | /* | |
2591 | * Reads can be interrupted by signals and unavailable resources... | |
2592 | */ | |
2593 | ||
2594 | if (errno == EAGAIN || errno == EINTR) | |
2595 | continue; | |
2596 | else | |
2597 | return (-1); | |
2598 | } | |
2599 | ||
2600 | /* | |
2601 | * Return the total number of bytes read... | |
2602 | */ | |
2603 | ||
2604 | return (total); | |
2605 | } | |
2606 | ||
2607 | ||
2608 | /* | |
2609 | * 'cups_write()' - Write to a file descriptor. | |
2610 | */ | |
2611 | ||
2612 | static ssize_t /* O - Number of bytes written or -1 */ | |
2613 | cups_write(cups_file_t *fp, /* I - CUPS file */ | |
2614 | const char *buf, /* I - Buffer */ | |
2615 | size_t bytes) /* I - Number bytes */ | |
2616 | { | |
2abf387c | 2617 | size_t total; /* Total bytes written */ |
2618 | ssize_t count; /* Count this time */ | |
ef416fc2 | 2619 | |
2620 | ||
e07d4801 | 2621 | DEBUG_printf(("7cups_write(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2622 | CUPS_LLCAST bytes)); |
ecdc0628 | 2623 | |
ef416fc2 | 2624 | /* |
2625 | * Loop until all bytes are written... | |
2626 | */ | |
2627 | ||
2628 | total = 0; | |
2629 | while (bytes > 0) | |
2630 | { | |
b86bc4cf | 2631 | #ifdef WIN32 |
2632 | if (fp->mode == 's') | |
2633 | count = (ssize_t)send(fp->fd, buf, (unsigned)bytes, 0); | |
2634 | else | |
2635 | count = (ssize_t)write(fp->fd, buf, (unsigned)bytes); | |
2636 | #else | |
ef416fc2 | 2637 | if (fp->mode == 's') |
2638 | count = send(fp->fd, buf, bytes, 0); | |
2639 | else | |
2640 | count = write(fp->fd, buf, bytes); | |
b86bc4cf | 2641 | #endif /* WIN32 */ |
ef416fc2 | 2642 | |
e07d4801 | 2643 | DEBUG_printf(("9cups_write: count=" CUPS_LLFMT, CUPS_LLCAST count)); |
634763e8 | 2644 | |
ef416fc2 | 2645 | if (count < 0) |
2646 | { | |
2647 | /* | |
2648 | * Writes can be interrupted by signals and unavailable resources... | |
2649 | */ | |
2650 | ||
2651 | if (errno == EAGAIN || errno == EINTR) | |
2652 | continue; | |
2653 | else | |
2654 | return (-1); | |
2655 | } | |
2656 | ||
2657 | /* | |
2658 | * Update the counts for the last write call... | |
2659 | */ | |
2660 | ||
1a18c85c MS |
2661 | bytes -= (size_t)count; |
2662 | total += (size_t)count; | |
ef416fc2 | 2663 | buf += count; |
2664 | } | |
2665 | ||
2666 | /* | |
2667 | * Return the total number of bytes written... | |
2668 | */ | |
2669 | ||
b86bc4cf | 2670 | return ((ssize_t)total); |
ef416fc2 | 2671 | } |
2672 | ||
2673 | ||
2674 | /* | |
4ef75dec | 2675 | * End of "$Id: file.c 12297 2014-12-08 19:26:32Z msweet $". |
ef416fc2 | 2676 | */ |