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Commit | Line | Data |
---|---|---|
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/". | |
6539a0af 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 | { | |
291 | case _CUPS_FILE_CHECK_OK : | |
292 | prefix = "DEBUG2"; | |
293 | break; | |
294 | ||
295 | case _CUPS_FILE_CHECK_MISSING : | |
296 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
297 | prefix = "ERROR"; | |
298 | fputs("STATE: +cups-missing-filter-warning\n", stderr); | |
299 | break; | |
300 | ||
301 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
88f9aafc | 302 | case _CUPS_FILE_CHECK_RELATIVE_PATH : |
22c9029b MS |
303 | prefix = "ERROR"; |
304 | fputs("STATE: +cups-insecure-filter-warning\n", stderr); | |
305 | break; | |
306 | } | |
307 | ||
308 | fprintf(stderr, "%s: %s\n", prefix, message); | |
309 | } | |
83e08001 | 310 | #endif /* !WIN32 */ |
22c9029b MS |
311 | |
312 | ||
ef416fc2 | 313 | /* |
314 | * 'cupsFileClose()' - Close a CUPS file. | |
5a738aea | 315 | * |
f3c17241 | 316 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 317 | */ |
318 | ||
319 | int /* O - 0 on success, -1 on error */ | |
320 | cupsFileClose(cups_file_t *fp) /* I - CUPS file */ | |
321 | { | |
322 | int fd; /* File descriptor */ | |
323 | char mode; /* Open mode */ | |
324 | int status; /* Return status */ | |
80ca4592 | 325 | int is_stdio; /* Is a stdio file? */ |
ef416fc2 | 326 | |
327 | ||
e07d4801 | 328 | DEBUG_printf(("cupsFileClose(fp=%p)", fp)); |
ef416fc2 | 329 | |
330 | /* | |
331 | * Range check... | |
332 | */ | |
333 | ||
334 | if (!fp) | |
335 | return (-1); | |
336 | ||
337 | /* | |
338 | * Flush pending write data... | |
339 | */ | |
340 | ||
341 | if (fp->mode == 'w') | |
342 | status = cupsFileFlush(fp); | |
343 | else | |
344 | status = 0; | |
345 | ||
346 | #ifdef HAVE_LIBZ | |
347 | if (fp->compressed && status >= 0) | |
348 | { | |
349 | if (fp->mode == 'r') | |
350 | { | |
351 | /* | |
352 | * Free decompression data... | |
353 | */ | |
354 | ||
355 | inflateEnd(&fp->stream); | |
356 | } | |
357 | else | |
358 | { | |
359 | /* | |
360 | * Flush any remaining compressed data... | |
361 | */ | |
362 | ||
363 | unsigned char trailer[8]; /* Trailer CRC and length */ | |
364 | int done; /* Done writing... */ | |
365 | ||
366 | ||
367 | fp->stream.avail_in = 0; | |
368 | ||
369 | for (done = 0;;) | |
370 | { | |
371 | if (fp->stream.next_out > fp->cbuf) | |
372 | { | |
373 | if (cups_write(fp, (char *)fp->cbuf, | |
7e86f2f6 | 374 | (size_t)(fp->stream.next_out - fp->cbuf)) < 0) |
ef416fc2 | 375 | status = -1; |
376 | ||
377 | fp->stream.next_out = fp->cbuf; | |
378 | fp->stream.avail_out = sizeof(fp->cbuf); | |
379 | } | |
380 | ||
381 | if (done || status < 0) | |
382 | break; | |
383 | ||
384 | done = deflate(&fp->stream, Z_FINISH) == Z_STREAM_END && | |
385 | fp->stream.next_out == fp->cbuf; | |
386 | } | |
387 | ||
388 | /* | |
389 | * Write the CRC and length... | |
390 | */ | |
391 | ||
7e86f2f6 MS |
392 | trailer[0] = (unsigned char)fp->crc; |
393 | trailer[1] = (unsigned char)(fp->crc >> 8); | |
394 | trailer[2] = (unsigned char)(fp->crc >> 16); | |
395 | trailer[3] = (unsigned char)(fp->crc >> 24); | |
396 | trailer[4] = (unsigned char)fp->pos; | |
397 | trailer[5] = (unsigned char)(fp->pos >> 8); | |
398 | trailer[6] = (unsigned char)(fp->pos >> 16); | |
399 | trailer[7] = (unsigned char)(fp->pos >> 24); | |
ef416fc2 | 400 | |
401 | if (cups_write(fp, (char *)trailer, 8) < 0) | |
402 | status = -1; | |
403 | ||
404 | /* | |
405 | * Free all memory used by the compression stream... | |
406 | */ | |
407 | ||
408 | deflateEnd(&(fp->stream)); | |
409 | } | |
410 | } | |
411 | #endif /* HAVE_LIBZ */ | |
412 | ||
413 | /* | |
414 | * Save the file descriptor we used and free memory... | |
415 | */ | |
416 | ||
80ca4592 | 417 | fd = fp->fd; |
418 | mode = fp->mode; | |
419 | is_stdio = fp->is_stdio; | |
ef416fc2 | 420 | |
75bd9771 MS |
421 | if (fp->printf_buffer) |
422 | free(fp->printf_buffer); | |
423 | ||
ef416fc2 | 424 | free(fp); |
425 | ||
426 | /* | |
427 | * Close the file, returning the close status... | |
428 | */ | |
429 | ||
430 | if (mode == 's') | |
431 | { | |
87e98392 | 432 | if (httpAddrClose(NULL, fd) < 0) |
ef416fc2 | 433 | status = -1; |
434 | } | |
80ca4592 | 435 | else if (!is_stdio) |
ef416fc2 | 436 | { |
437 | if (close(fd) < 0) | |
438 | status = -1; | |
439 | } | |
440 | ||
441 | return (status); | |
442 | } | |
443 | ||
444 | ||
445 | /* | |
446 | * 'cupsFileCompression()' - Return whether a file is compressed. | |
5a738aea | 447 | * |
f3c17241 | 448 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 449 | */ |
450 | ||
5a738aea | 451 | int /* O - @code CUPS_FILE_NONE@ or @code CUPS_FILE_GZIP@ */ |
ef416fc2 | 452 | cupsFileCompression(cups_file_t *fp) /* I - CUPS file */ |
453 | { | |
80ca4592 | 454 | return (fp ? fp->compressed : CUPS_FILE_NONE); |
ef416fc2 | 455 | } |
456 | ||
457 | ||
458 | /* | |
459 | * 'cupsFileEOF()' - Return the end-of-file status. | |
5a738aea | 460 | * |
f3c17241 | 461 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 462 | */ |
463 | ||
5a738aea | 464 | int /* O - 1 on end of file, 0 otherwise */ |
ef416fc2 | 465 | cupsFileEOF(cups_file_t *fp) /* I - CUPS file */ |
466 | { | |
80ca4592 | 467 | return (fp ? fp->eof : 1); |
ef416fc2 | 468 | } |
469 | ||
470 | ||
fa73b229 | 471 | /* |
472 | * 'cupsFileFind()' - Find a file using the specified path. | |
473 | * | |
474 | * This function allows the paths in the path string to be separated by | |
475 | * colons (UNIX standard) or semicolons (Windows standard) and stores the | |
476 | * result in the buffer supplied. If the file cannot be found in any of | |
5a738aea MS |
477 | * the supplied paths, @code NULL@ is returned. A @code NULL@ path only |
478 | * matches the current directory. | |
479 | * | |
f3c17241 | 480 | * @since CUPS 1.2/OS X 10.5@ |
fa73b229 | 481 | */ |
482 | ||
5a738aea | 483 | const char * /* O - Full path to file or @code NULL@ if not found */ |
fa73b229 | 484 | cupsFileFind(const char *filename, /* I - File to find */ |
485 | const char *path, /* I - Colon/semicolon-separated path */ | |
4400e98d | 486 | int executable, /* I - 1 = executable files, 0 = any file/dir */ |
487 | char *buffer, /* I - Filename buffer */ | |
fa73b229 | 488 | int bufsize) /* I - Size of filename buffer */ |
489 | { | |
490 | char *bufptr, /* Current position in buffer */ | |
491 | *bufend; /* End of buffer */ | |
492 | ||
493 | ||
494 | /* | |
495 | * Range check input... | |
496 | */ | |
497 | ||
e07d4801 MS |
498 | DEBUG_printf(("cupsFileFind(filename=\"%s\", path=\"%s\", executable=%d, " |
499 | "buffer=%p, bufsize=%d)", filename, path, executable, buffer, | |
500 | bufsize)); | |
501 | ||
fa73b229 | 502 | if (!filename || !buffer || bufsize < 2) |
503 | return (NULL); | |
504 | ||
505 | if (!path) | |
506 | { | |
507 | /* | |
508 | * No path, so check current directory... | |
509 | */ | |
510 | ||
511 | if (!access(filename, 0)) | |
512 | { | |
07623986 | 513 | strlcpy(buffer, filename, (size_t)bufsize); |
fa73b229 | 514 | return (buffer); |
515 | } | |
516 | else | |
517 | return (NULL); | |
518 | } | |
519 | ||
520 | /* | |
521 | * Now check each path and return the first match... | |
522 | */ | |
523 | ||
524 | bufend = buffer + bufsize - 1; | |
525 | bufptr = buffer; | |
526 | ||
527 | while (*path) | |
528 | { | |
b86bc4cf | 529 | #ifdef WIN32 |
530 | if (*path == ';' || (*path == ':' && ((bufptr - buffer) > 1 || !isalpha(buffer[0] & 255)))) | |
531 | #else | |
fa73b229 | 532 | if (*path == ';' || *path == ':') |
b86bc4cf | 533 | #endif /* WIN32 */ |
fa73b229 | 534 | { |
535 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
536 | *bufptr++ = '/'; | |
537 | ||
07623986 | 538 | strlcpy(bufptr, filename, (size_t)(bufend - bufptr)); |
fa73b229 | 539 | |
4400e98d | 540 | #ifdef WIN32 |
fa73b229 | 541 | if (!access(buffer, 0)) |
4400e98d | 542 | #else |
543 | if (!access(buffer, executable ? X_OK : 0)) | |
544 | #endif /* WIN32 */ | |
b86bc4cf | 545 | { |
e07d4801 | 546 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 547 | return (buffer); |
b86bc4cf | 548 | } |
fa73b229 | 549 | |
550 | bufptr = buffer; | |
551 | } | |
552 | else if (bufptr < bufend) | |
553 | *bufptr++ = *path; | |
554 | ||
555 | path ++; | |
556 | } | |
557 | ||
558 | /* | |
559 | * Check the last path... | |
560 | */ | |
561 | ||
562 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
563 | *bufptr++ = '/'; | |
564 | ||
07623986 | 565 | strlcpy(bufptr, filename, (size_t)(bufend - bufptr)); |
fa73b229 | 566 | |
567 | if (!access(buffer, 0)) | |
b86bc4cf | 568 | { |
e07d4801 | 569 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 570 | return (buffer); |
b86bc4cf | 571 | } |
fa73b229 | 572 | else |
b86bc4cf | 573 | { |
e07d4801 | 574 | DEBUG_puts("1cupsFileFind: Returning NULL"); |
fa73b229 | 575 | return (NULL); |
b86bc4cf | 576 | } |
fa73b229 | 577 | } |
578 | ||
579 | ||
ef416fc2 | 580 | /* |
581 | * 'cupsFileFlush()' - Flush pending output. | |
5a738aea | 582 | * |
f3c17241 | 583 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 584 | */ |
585 | ||
586 | int /* O - 0 on success, -1 on error */ | |
587 | cupsFileFlush(cups_file_t *fp) /* I - CUPS file */ | |
588 | { | |
2abf387c | 589 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 590 | |
591 | ||
e07d4801 | 592 | DEBUG_printf(("cupsFileFlush(fp=%p)", fp)); |
ef416fc2 | 593 | |
594 | /* | |
595 | * Range check input... | |
596 | */ | |
597 | ||
598 | if (!fp || fp->mode != 'w') | |
599 | { | |
e07d4801 | 600 | DEBUG_puts("1cupsFileFlush: Attempt to flush a read-only file..."); |
ef416fc2 | 601 | return (-1); |
602 | } | |
603 | ||
b86bc4cf | 604 | bytes = (ssize_t)(fp->ptr - fp->buf); |
ef416fc2 | 605 | |
e07d4801 | 606 | DEBUG_printf(("2cupsFileFlush: Flushing " CUPS_LLFMT " bytes...", |
634763e8 | 607 | CUPS_LLCAST bytes)); |
ecdc0628 | 608 | |
ef416fc2 | 609 | if (bytes > 0) |
610 | { | |
611 | #ifdef HAVE_LIBZ | |
612 | if (fp->compressed) | |
7e86f2f6 | 613 | bytes = cups_compress(fp, fp->buf, (size_t)bytes); |
ef416fc2 | 614 | else |
615 | #endif /* HAVE_LIBZ */ | |
7e86f2f6 | 616 | bytes = cups_write(fp, fp->buf, (size_t)bytes); |
ef416fc2 | 617 | |
618 | if (bytes < 0) | |
619 | return (-1); | |
620 | ||
621 | fp->ptr = fp->buf; | |
622 | } | |
f14324a7 | 623 | |
ef416fc2 | 624 | return (0); |
625 | } | |
626 | ||
627 | ||
628 | /* | |
629 | * 'cupsFileGetChar()' - Get a single character from a file. | |
5a738aea | 630 | * |
f3c17241 | 631 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 632 | */ |
633 | ||
5a738aea | 634 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 635 | cupsFileGetChar(cups_file_t *fp) /* I - CUPS file */ |
636 | { | |
637 | /* | |
638 | * Range check input... | |
639 | */ | |
640 | ||
641 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
b86bc4cf | 642 | { |
f14324a7 | 643 | DEBUG_puts("5cupsFileGetChar: Bad arguments!"); |
ef416fc2 | 644 | return (-1); |
b86bc4cf | 645 | } |
ef416fc2 | 646 | |
647 | /* | |
648 | * If the input buffer is empty, try to read more data... | |
649 | */ | |
650 | ||
651 | if (fp->ptr >= fp->end) | |
652 | if (cups_fill(fp) < 0) | |
b86bc4cf | 653 | { |
f14324a7 | 654 | DEBUG_puts("5cupsFileGetChar: Unable to fill buffer!"); |
ef416fc2 | 655 | return (-1); |
b86bc4cf | 656 | } |
ef416fc2 | 657 | |
658 | /* | |
659 | * Return the next character in the buffer... | |
660 | */ | |
661 | ||
f14324a7 | 662 | DEBUG_printf(("5cupsFileGetChar: Returning %d...", *(fp->ptr) & 255)); |
b86bc4cf | 663 | |
634763e8 MS |
664 | fp->pos ++; |
665 | ||
f14324a7 | 666 | DEBUG_printf(("6cupsFileGetChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 667 | |
ef416fc2 | 668 | return (*(fp->ptr)++ & 255); |
669 | } | |
670 | ||
671 | ||
672 | /* | |
22c9029b | 673 | * 'cupsFileGetConf()' - Get a line from a configuration file. |
5a738aea | 674 | * |
f3c17241 | 675 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 676 | */ |
677 | ||
5a738aea | 678 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 679 | cupsFileGetConf(cups_file_t *fp, /* I - CUPS file */ |
680 | char *buf, /* O - String buffer */ | |
681 | size_t buflen, /* I - Size of string buffer */ | |
682 | char **value, /* O - Pointer to value */ | |
683 | int *linenum) /* IO - Current line number */ | |
684 | { | |
685 | char *ptr; /* Pointer into line */ | |
686 | ||
687 | ||
688 | /* | |
689 | * Range check input... | |
690 | */ | |
691 | ||
e07d4801 MS |
692 | DEBUG_printf(("2cupsFileGetConf(fp=%p, buf=%p, buflen=" CUPS_LLFMT |
693 | ", value=%p, linenum=%p)", fp, buf, CUPS_LLCAST buflen, | |
634763e8 MS |
694 | value, linenum)); |
695 | ||
ef416fc2 | 696 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || |
697 | !buf || buflen < 2 || !value) | |
698 | { | |
699 | if (value) | |
700 | *value = NULL; | |
701 | ||
702 | return (NULL); | |
703 | } | |
704 | ||
705 | /* | |
706 | * Read the next non-comment line... | |
707 | */ | |
708 | ||
709 | *value = NULL; | |
f7deaa1a | 710 | |
ef416fc2 | 711 | while (cupsFileGets(fp, buf, buflen)) |
712 | { | |
713 | (*linenum) ++; | |
714 | ||
715 | /* | |
716 | * Strip any comments... | |
717 | */ | |
718 | ||
719 | if ((ptr = strchr(buf, '#')) != NULL) | |
720 | { | |
f7deaa1a | 721 | if (ptr > buf && ptr[-1] == '\\') |
ef416fc2 | 722 | { |
f7deaa1a | 723 | // Unquote the #... |
724 | _cups_strcpy(ptr - 1, ptr); | |
ef416fc2 | 725 | } |
f7deaa1a | 726 | else |
727 | { | |
728 | // Strip the comment and any trailing whitespace... | |
729 | while (ptr > buf) | |
730 | { | |
7cf5915e | 731 | if (!_cups_isspace(ptr[-1])) |
f7deaa1a | 732 | break; |
733 | ||
734 | ptr --; | |
735 | } | |
ef416fc2 | 736 | |
f7deaa1a | 737 | *ptr = '\0'; |
738 | } | |
ef416fc2 | 739 | } |
740 | ||
741 | /* | |
742 | * Strip leading whitespace... | |
743 | */ | |
744 | ||
7cf5915e | 745 | for (ptr = buf; _cups_isspace(*ptr); ptr ++); |
ef416fc2 | 746 | |
747 | if (ptr > buf) | |
748 | _cups_strcpy(buf, ptr); | |
749 | ||
750 | /* | |
751 | * See if there is anything left... | |
752 | */ | |
753 | ||
754 | if (buf[0]) | |
755 | { | |
756 | /* | |
757 | * Yes, grab any value and return... | |
758 | */ | |
759 | ||
760 | for (ptr = buf; *ptr; ptr ++) | |
7cf5915e | 761 | if (_cups_isspace(*ptr)) |
ef416fc2 | 762 | break; |
763 | ||
764 | if (*ptr) | |
765 | { | |
766 | /* | |
767 | * Have a value, skip any other spaces... | |
768 | */ | |
769 | ||
7cf5915e | 770 | while (_cups_isspace(*ptr)) |
ef416fc2 | 771 | *ptr++ = '\0'; |
772 | ||
773 | if (*ptr) | |
774 | *value = ptr; | |
775 | ||
776 | /* | |
777 | * Strip trailing whitespace and > for lines that begin with <... | |
778 | */ | |
779 | ||
780 | ptr += strlen(ptr) - 1; | |
781 | ||
782 | if (buf[0] == '<' && *ptr == '>') | |
783 | *ptr-- = '\0'; | |
784 | else if (buf[0] == '<' && *ptr != '>') | |
785 | { | |
786 | /* | |
787 | * Syntax error... | |
788 | */ | |
789 | ||
790 | *value = NULL; | |
791 | return (buf); | |
792 | } | |
793 | ||
7cf5915e | 794 | while (ptr > *value && _cups_isspace(*ptr)) |
ef416fc2 | 795 | *ptr-- = '\0'; |
796 | } | |
797 | ||
798 | /* | |
799 | * Return the line... | |
800 | */ | |
801 | ||
802 | return (buf); | |
803 | } | |
804 | } | |
805 | ||
806 | return (NULL); | |
807 | } | |
808 | ||
809 | ||
80ca4592 | 810 | /* |
811 | * 'cupsFileGetLine()' - Get a CR and/or LF-terminated line that may | |
812 | * contain binary data. | |
813 | * | |
5a738aea MS |
814 | * This function differs from @link cupsFileGets@ in that the trailing CR |
815 | * and LF are preserved, as is any binary data on the line. The buffer is | |
816 | * nul-terminated, however you should use the returned length to determine | |
80ca4592 | 817 | * the number of bytes on the line. |
5a738aea | 818 | * |
f3c17241 | 819 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 820 | */ |
821 | ||
5a738aea | 822 | size_t /* O - Number of bytes on line or 0 on end of file */ |
80ca4592 | 823 | cupsFileGetLine(cups_file_t *fp, /* I - File to read from */ |
824 | char *buf, /* I - Buffer */ | |
825 | size_t buflen) /* I - Size of buffer */ | |
826 | { | |
827 | int ch; /* Character from file */ | |
828 | char *ptr, /* Current position in line buffer */ | |
829 | *end; /* End of line buffer */ | |
830 | ||
831 | ||
832 | /* | |
833 | * Range check input... | |
834 | */ | |
835 | ||
e07d4801 | 836 | DEBUG_printf(("2cupsFileGetLine(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", |
634763e8 MS |
837 | fp, buf, CUPS_LLCAST buflen)); |
838 | ||
80ca4592 | 839 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 3) |
840 | return (0); | |
841 | ||
842 | /* | |
843 | * Now loop until we have a valid line... | |
844 | */ | |
845 | ||
846 | for (ptr = buf, end = buf + buflen - 2; ptr < end ;) | |
847 | { | |
848 | if (fp->ptr >= fp->end) | |
849 | if (cups_fill(fp) <= 0) | |
850 | break; | |
851 | ||
852 | *ptr++ = ch = *(fp->ptr)++; | |
634763e8 | 853 | fp->pos ++; |
80ca4592 | 854 | |
855 | if (ch == '\r') | |
856 | { | |
857 | /* | |
858 | * Check for CR LF... | |
859 | */ | |
860 | ||
861 | if (fp->ptr >= fp->end) | |
862 | if (cups_fill(fp) <= 0) | |
863 | break; | |
864 | ||
865 | if (*(fp->ptr) == '\n') | |
634763e8 | 866 | { |
80ca4592 | 867 | *ptr++ = *(fp->ptr)++; |
634763e8 MS |
868 | fp->pos ++; |
869 | } | |
80ca4592 | 870 | |
871 | break; | |
872 | } | |
873 | else if (ch == '\n') | |
874 | { | |
875 | /* | |
876 | * Line feed ends a line... | |
877 | */ | |
878 | ||
879 | break; | |
880 | } | |
881 | } | |
882 | ||
883 | *ptr = '\0'; | |
884 | ||
e07d4801 | 885 | DEBUG_printf(("4cupsFileGetLine: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 886 | |
7e86f2f6 | 887 | return ((size_t)(ptr - buf)); |
80ca4592 | 888 | } |
889 | ||
890 | ||
ef416fc2 | 891 | /* |
892 | * 'cupsFileGets()' - Get a CR and/or LF-terminated line. | |
5a738aea | 893 | * |
f3c17241 | 894 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 895 | */ |
896 | ||
5a738aea | 897 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 898 | cupsFileGets(cups_file_t *fp, /* I - CUPS file */ |
899 | char *buf, /* O - String buffer */ | |
900 | size_t buflen) /* I - Size of string buffer */ | |
901 | { | |
902 | int ch; /* Character from file */ | |
903 | char *ptr, /* Current position in line buffer */ | |
904 | *end; /* End of line buffer */ | |
905 | ||
906 | ||
907 | /* | |
908 | * Range check input... | |
909 | */ | |
910 | ||
e07d4801 | 911 | DEBUG_printf(("2cupsFileGets(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
912 | CUPS_LLCAST buflen)); |
913 | ||
ef416fc2 | 914 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 2) |
915 | return (NULL); | |
916 | ||
917 | /* | |
918 | * Now loop until we have a valid line... | |
919 | */ | |
920 | ||
921 | for (ptr = buf, end = buf + buflen - 1; ptr < end ;) | |
922 | { | |
923 | if (fp->ptr >= fp->end) | |
924 | if (cups_fill(fp) <= 0) | |
925 | { | |
926 | if (ptr == buf) | |
927 | return (NULL); | |
928 | else | |
929 | break; | |
930 | } | |
931 | ||
932 | ch = *(fp->ptr)++; | |
634763e8 | 933 | fp->pos ++; |
ef416fc2 | 934 | |
935 | if (ch == '\r') | |
936 | { | |
937 | /* | |
938 | * Check for CR LF... | |
939 | */ | |
940 | ||
941 | if (fp->ptr >= fp->end) | |
942 | if (cups_fill(fp) <= 0) | |
943 | break; | |
944 | ||
945 | if (*(fp->ptr) == '\n') | |
634763e8 MS |
946 | { |
947 | fp->ptr ++; | |
948 | fp->pos ++; | |
949 | } | |
ef416fc2 | 950 | |
951 | break; | |
952 | } | |
953 | else if (ch == '\n') | |
954 | { | |
955 | /* | |
956 | * Line feed ends a line... | |
957 | */ | |
958 | ||
959 | break; | |
960 | } | |
961 | else | |
7e86f2f6 | 962 | *ptr++ = (char)ch; |
ef416fc2 | 963 | } |
964 | ||
965 | *ptr = '\0'; | |
966 | ||
e07d4801 | 967 | DEBUG_printf(("4cupsFileGets: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 968 | |
ef416fc2 | 969 | return (buf); |
970 | } | |
971 | ||
972 | ||
973 | /* | |
974 | * 'cupsFileLock()' - Temporarily lock access to a file. | |
5a738aea | 975 | * |
f3c17241 | 976 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 977 | */ |
978 | ||
979 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 980 | cupsFileLock(cups_file_t *fp, /* I - CUPS file */ |
ef416fc2 | 981 | int block) /* I - 1 to wait for the lock, 0 to fail right away */ |
982 | { | |
983 | /* | |
984 | * Range check... | |
985 | */ | |
986 | ||
987 | if (!fp || fp->mode == 's') | |
988 | return (-1); | |
989 | ||
990 | /* | |
991 | * Try the lock... | |
992 | */ | |
993 | ||
994 | #ifdef WIN32 | |
536bc2c6 | 995 | return (_locking(fp->fd, block ? _LK_LOCK : _LK_NBLCK, 0)); |
ef416fc2 | 996 | #else |
997 | return (lockf(fp->fd, block ? F_LOCK : F_TLOCK, 0)); | |
998 | #endif /* WIN32 */ | |
999 | } | |
1000 | ||
1001 | ||
1002 | /* | |
1003 | * 'cupsFileNumber()' - Return the file descriptor associated with a CUPS file. | |
5a738aea | 1004 | * |
f3c17241 | 1005 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1006 | */ |
1007 | ||
1008 | int /* O - File descriptor */ | |
1009 | cupsFileNumber(cups_file_t *fp) /* I - CUPS file */ | |
1010 | { | |
5a738aea MS |
1011 | if (fp) |
1012 | return (fp->fd); | |
1013 | else | |
1014 | return (-1); | |
ef416fc2 | 1015 | } |
1016 | ||
1017 | ||
1018 | /* | |
1019 | * 'cupsFileOpen()' - Open a CUPS file. | |
5a738aea MS |
1020 | * |
1021 | * The "mode" parameter can be "r" to read, "w" to write, overwriting any | |
1022 | * existing file, "a" to append to an existing file or create a new file, | |
1023 | * or "s" to open a socket connection. | |
1024 | * | |
634763e8 MS |
1025 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1026 | * supplied which enables Flate compression of the file. Compression is | |
1027 | * not supported for the "a" (append) mode. | |
5a738aea MS |
1028 | * |
1029 | * When opening a socket connection, the filename is a string of the form | |
1030 | * "address:port" or "hostname:port". The socket will make an IPv4 or IPv6 | |
1031 | * connection as needed, generally preferring IPv6 connections when there is | |
1032 | * a choice. | |
1033 | * | |
f3c17241 | 1034 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1035 | */ |
1036 | ||
5a738aea | 1037 | cups_file_t * /* O - CUPS file or @code NULL@ if the file or socket cannot be opened */ |
ef416fc2 | 1038 | cupsFileOpen(const char *filename, /* I - Name of file */ |
1039 | const char *mode) /* I - Open mode */ | |
1040 | { | |
1041 | cups_file_t *fp; /* New CUPS file */ | |
1042 | int fd; /* File descriptor */ | |
1043 | char hostname[1024], /* Hostname */ | |
1044 | *portname; /* Port "name" (number or service) */ | |
1045 | http_addrlist_t *addrlist; /* Host address list */ | |
1046 | ||
1047 | ||
e07d4801 | 1048 | DEBUG_printf(("cupsFileOpen(filename=\"%s\", mode=\"%s\")", filename, |
b423cd4c | 1049 | mode)); |
1050 | ||
ef416fc2 | 1051 | /* |
1052 | * Range check input... | |
1053 | */ | |
1054 | ||
1055 | if (!filename || !mode || | |
634763e8 MS |
1056 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1057 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1058 | return (NULL); |
1059 | ||
1060 | /* | |
1061 | * Open the file... | |
1062 | */ | |
1063 | ||
1064 | switch (*mode) | |
1065 | { | |
1066 | case 'a' : /* Append file */ | |
c7017ecc MS |
1067 | fd = cups_open(filename, |
1068 | O_RDWR | O_CREAT | O_APPEND | O_LARGEFILE | O_BINARY); | |
ef416fc2 | 1069 | break; |
1070 | ||
1071 | case 'r' : /* Read file */ | |
b86bc4cf | 1072 | fd = open(filename, O_RDONLY | O_LARGEFILE | O_BINARY, 0); |
ef416fc2 | 1073 | break; |
1074 | ||
1075 | case 'w' : /* Write file */ | |
c7017ecc MS |
1076 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); |
1077 | if (fd < 0 && errno == ENOENT) | |
1078 | { | |
1079 | fd = cups_open(filename, | |
1080 | O_WRONLY | O_CREAT | O_EXCL | O_LARGEFILE | O_BINARY); | |
1081 | if (fd < 0 && errno == EEXIST) | |
1082 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); | |
1083 | } | |
1084 | ||
1085 | if (fd >= 0) | |
1086 | #ifdef WIN32 | |
1087 | _chsize(fd, 0); | |
1088 | #else | |
1089 | ftruncate(fd, 0); | |
1090 | #endif /* WIN32 */ | |
ef416fc2 | 1091 | break; |
1092 | ||
1093 | case 's' : /* Read/write socket */ | |
1094 | strlcpy(hostname, filename, sizeof(hostname)); | |
1095 | if ((portname = strrchr(hostname, ':')) != NULL) | |
1096 | *portname++ = '\0'; | |
1097 | else | |
1098 | return (NULL); | |
1099 | ||
1100 | /* | |
1101 | * Lookup the hostname and service... | |
1102 | */ | |
1103 | ||
1104 | if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL) | |
1105 | return (NULL); | |
1106 | ||
1107 | /* | |
1108 | * Connect to the server... | |
1109 | */ | |
1110 | ||
1111 | if (!httpAddrConnect(addrlist, &fd)) | |
1112 | { | |
1113 | httpAddrFreeList(addrlist); | |
1114 | return (NULL); | |
1115 | } | |
1116 | ||
1117 | httpAddrFreeList(addrlist); | |
1118 | break; | |
1119 | ||
1120 | default : /* Remove bogus compiler warning... */ | |
1121 | return (NULL); | |
1122 | } | |
1123 | ||
1124 | if (fd < 0) | |
1125 | return (NULL); | |
1126 | ||
1127 | /* | |
1128 | * Create the CUPS file structure... | |
1129 | */ | |
1130 | ||
1131 | if ((fp = cupsFileOpenFd(fd, mode)) == NULL) | |
1132 | { | |
1133 | if (*mode == 's') | |
87e98392 | 1134 | httpAddrClose(NULL, fd); |
ef416fc2 | 1135 | else |
1136 | close(fd); | |
1137 | } | |
1138 | ||
1139 | /* | |
1140 | * Return it... | |
1141 | */ | |
1142 | ||
1143 | return (fp); | |
1144 | } | |
1145 | ||
1146 | /* | |
1147 | * 'cupsFileOpenFd()' - Open a CUPS file using a file descriptor. | |
5a738aea | 1148 | * |
634763e8 MS |
1149 | * The "mode" parameter can be "r" to read, "w" to write, "a" to append, |
1150 | * or "s" to treat the file descriptor as a bidirectional socket connection. | |
5a738aea | 1151 | * |
634763e8 MS |
1152 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1153 | * supplied which enables Flate compression of the file. Compression is | |
1154 | * not supported for the "a" (append) mode. | |
5a738aea | 1155 | * |
f3c17241 | 1156 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1157 | */ |
1158 | ||
5a738aea | 1159 | cups_file_t * /* O - CUPS file or @code NULL@ if the file could not be opened */ |
ef416fc2 | 1160 | cupsFileOpenFd(int fd, /* I - File descriptor */ |
1161 | const char *mode) /* I - Open mode */ | |
1162 | { | |
1163 | cups_file_t *fp; /* New CUPS file */ | |
1164 | ||
1165 | ||
e07d4801 | 1166 | DEBUG_printf(("cupsFileOpenFd(fd=%d, mode=\"%s\")", fd, mode)); |
b423cd4c | 1167 | |
ef416fc2 | 1168 | /* |
1169 | * Range check input... | |
1170 | */ | |
1171 | ||
1172 | if (fd < 0 || !mode || | |
634763e8 MS |
1173 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1174 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1175 | return (NULL); |
1176 | ||
1177 | /* | |
1178 | * Allocate memory... | |
1179 | */ | |
1180 | ||
1181 | if ((fp = calloc(1, sizeof(cups_file_t))) == NULL) | |
1182 | return (NULL); | |
1183 | ||
1184 | /* | |
1185 | * Open the file... | |
1186 | */ | |
1187 | ||
1188 | fp->fd = fd; | |
1189 | ||
1190 | switch (*mode) | |
1191 | { | |
ef416fc2 | 1192 | case 'a' : |
634763e8 MS |
1193 | fp->pos = lseek(fd, 0, SEEK_END); |
1194 | ||
1195 | case 'w' : | |
ef416fc2 | 1196 | fp->mode = 'w'; |
1197 | fp->ptr = fp->buf; | |
1198 | fp->end = fp->buf + sizeof(fp->buf); | |
1199 | ||
1200 | #ifdef HAVE_LIBZ | |
1201 | if (mode[1] >= '1' && mode[1] <= '9') | |
1202 | { | |
1203 | /* | |
1204 | * Open a compressed stream, so write the standard gzip file | |
1205 | * header... | |
1206 | */ | |
1207 | ||
1208 | unsigned char header[10]; /* gzip file header */ | |
1209 | time_t curtime; /* Current time */ | |
1210 | ||
1211 | ||
1212 | curtime = time(NULL); | |
1213 | header[0] = 0x1f; | |
1214 | header[1] = 0x8b; | |
1215 | header[2] = Z_DEFLATED; | |
1216 | header[3] = 0; | |
7e86f2f6 MS |
1217 | header[4] = (unsigned char)curtime; |
1218 | header[5] = (unsigned char)(curtime >> 8); | |
1219 | header[6] = (unsigned char)(curtime >> 16); | |
1220 | header[7] = (unsigned char)(curtime >> 24); | |
ef416fc2 | 1221 | header[8] = 0; |
1222 | header[9] = 0x03; | |
1223 | ||
1224 | cups_write(fp, (char *)header, 10); | |
1225 | ||
1226 | /* | |
1227 | * Initialize the compressor... | |
1228 | */ | |
1229 | ||
1230 | deflateInit2(&(fp->stream), mode[1] - '0', Z_DEFLATED, -15, 8, | |
1231 | Z_DEFAULT_STRATEGY); | |
1232 | ||
1233 | fp->stream.next_out = fp->cbuf; | |
1234 | fp->stream.avail_out = sizeof(fp->cbuf); | |
1235 | fp->compressed = 1; | |
1236 | fp->crc = crc32(0L, Z_NULL, 0); | |
1237 | } | |
1238 | #endif /* HAVE_LIBZ */ | |
1239 | break; | |
1240 | ||
1241 | case 'r' : | |
1242 | fp->mode = 'r'; | |
1243 | break; | |
1244 | ||
1245 | case 's' : | |
1246 | fp->mode = 's'; | |
1247 | break; | |
1248 | ||
1249 | default : /* Remove bogus compiler warning... */ | |
1250 | return (NULL); | |
1251 | } | |
1252 | ||
1253 | /* | |
1254 | * Don't pass this file to child processes... | |
1255 | */ | |
1256 | ||
1257 | #ifndef WIN32 | |
1258 | fcntl(fp->fd, F_SETFD, fcntl(fp->fd, F_GETFD) | FD_CLOEXEC); | |
1259 | #endif /* !WIN32 */ | |
1260 | ||
1261 | return (fp); | |
1262 | } | |
1263 | ||
1264 | ||
1265 | /* | |
1266 | * 'cupsFilePeekChar()' - Peek at the next character from a file. | |
5a738aea | 1267 | * |
f3c17241 | 1268 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1269 | */ |
1270 | ||
5a738aea | 1271 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 1272 | cupsFilePeekChar(cups_file_t *fp) /* I - CUPS file */ |
1273 | { | |
1274 | /* | |
1275 | * Range check input... | |
1276 | */ | |
1277 | ||
1278 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
1279 | return (-1); | |
1280 | ||
1281 | /* | |
1282 | * If the input buffer is empty, try to read more data... | |
1283 | */ | |
1284 | ||
1285 | if (fp->ptr >= fp->end) | |
1286 | if (cups_fill(fp) < 0) | |
1287 | return (-1); | |
1288 | ||
1289 | /* | |
1290 | * Return the next character in the buffer... | |
1291 | */ | |
1292 | ||
1293 | return (*(fp->ptr) & 255); | |
1294 | } | |
1295 | ||
1296 | ||
1297 | /* | |
1298 | * 'cupsFilePrintf()' - Write a formatted string. | |
5a738aea | 1299 | * |
f3c17241 | 1300 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1301 | */ |
1302 | ||
5a738aea | 1303 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1304 | cupsFilePrintf(cups_file_t *fp, /* I - CUPS file */ |
1305 | const char *format, /* I - Printf-style format string */ | |
1306 | ...) /* I - Additional args as necessary */ | |
1307 | { | |
1308 | va_list ap; /* Argument list */ | |
2abf387c | 1309 | ssize_t bytes; /* Formatted size */ |
ecdc0628 | 1310 | |
ef416fc2 | 1311 | |
e07d4801 | 1312 | DEBUG_printf(("2cupsFilePrintf(fp=%p, format=\"%s\", ...)", fp, format)); |
ef416fc2 | 1313 | |
1314 | if (!fp || !format || (fp->mode != 'w' && fp->mode != 's')) | |
1315 | return (-1); | |
1316 | ||
75bd9771 MS |
1317 | if (!fp->printf_buffer) |
1318 | { | |
1319 | /* | |
1320 | * Start with an 1k printf buffer... | |
1321 | */ | |
1322 | ||
1323 | if ((fp->printf_buffer = malloc(1024)) == NULL) | |
1324 | return (-1); | |
1325 | ||
1326 | fp->printf_size = 1024; | |
1327 | } | |
1328 | ||
ef416fc2 | 1329 | va_start(ap, format); |
75bd9771 | 1330 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); |
ef416fc2 | 1331 | va_end(ap); |
1332 | ||
536bc2c6 | 1333 | if (bytes >= (ssize_t)fp->printf_size) |
75bd9771 MS |
1334 | { |
1335 | /* | |
1336 | * Expand the printf buffer... | |
1337 | */ | |
1338 | ||
1339 | char *temp; /* Temporary buffer pointer */ | |
1340 | ||
1341 | ||
1342 | if (bytes > 65535) | |
1343 | return (-1); | |
1344 | ||
7e86f2f6 | 1345 | if ((temp = realloc(fp->printf_buffer, (size_t)(bytes + 1))) == NULL) |
75bd9771 MS |
1346 | return (-1); |
1347 | ||
1348 | fp->printf_buffer = temp; | |
7e86f2f6 | 1349 | fp->printf_size = (size_t)(bytes + 1); |
75bd9771 MS |
1350 | |
1351 | va_start(ap, format); | |
1352 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); | |
1353 | va_end(ap); | |
1354 | } | |
ecdc0628 | 1355 | |
ef416fc2 | 1356 | if (fp->mode == 's') |
634763e8 | 1357 | { |
7e86f2f6 | 1358 | if (cups_write(fp, fp->printf_buffer, (size_t)bytes) < 0) |
634763e8 MS |
1359 | return (-1); |
1360 | ||
1361 | fp->pos += bytes; | |
1362 | ||
e07d4801 | 1363 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1364 | |
7e86f2f6 | 1365 | return ((int)bytes); |
634763e8 | 1366 | } |
ef416fc2 | 1367 | |
1368 | if ((fp->ptr + bytes) > fp->end) | |
1369 | if (cupsFileFlush(fp)) | |
1370 | return (-1); | |
1371 | ||
1372 | fp->pos += bytes; | |
1373 | ||
e07d4801 | 1374 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1375 | |
7e86f2f6 | 1376 | if ((size_t)bytes > sizeof(fp->buf)) |
ef416fc2 | 1377 | { |
1378 | #ifdef HAVE_LIBZ | |
1379 | if (fp->compressed) | |
7e86f2f6 | 1380 | return ((int)cups_compress(fp, fp->printf_buffer, (size_t)bytes)); |
ef416fc2 | 1381 | else |
1382 | #endif /* HAVE_LIBZ */ | |
7e86f2f6 | 1383 | return ((int)cups_write(fp, fp->printf_buffer, (size_t)bytes)); |
ef416fc2 | 1384 | } |
1385 | else | |
1386 | { | |
07623986 | 1387 | memcpy(fp->ptr, fp->printf_buffer, (size_t)bytes); |
ef416fc2 | 1388 | fp->ptr += bytes; |
7e86f2f6 | 1389 | return ((int)bytes); |
ef416fc2 | 1390 | } |
1391 | } | |
1392 | ||
1393 | ||
1394 | /* | |
1395 | * 'cupsFilePutChar()' - Write a character. | |
5a738aea | 1396 | * |
f3c17241 | 1397 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1398 | */ |
1399 | ||
1400 | int /* O - 0 on success, -1 on error */ | |
1401 | cupsFilePutChar(cups_file_t *fp, /* I - CUPS file */ | |
1402 | int c) /* I - Character to write */ | |
1403 | { | |
1404 | /* | |
1405 | * Range check input... | |
1406 | */ | |
1407 | ||
1408 | if (!fp || (fp->mode != 'w' && fp->mode != 's')) | |
1409 | return (-1); | |
1410 | ||
1411 | if (fp->mode == 's') | |
1412 | { | |
1413 | /* | |
1414 | * Send character immediately over socket... | |
1415 | */ | |
1416 | ||
1417 | char ch; /* Output character */ | |
1418 | ||
1419 | ||
7e86f2f6 | 1420 | ch = (char)c; |
ef416fc2 | 1421 | |
1422 | if (send(fp->fd, &ch, 1, 0) < 1) | |
1423 | return (-1); | |
1424 | } | |
1425 | else | |
1426 | { | |
1427 | /* | |
1428 | * Buffer it up... | |
1429 | */ | |
1430 | ||
1431 | if (fp->ptr >= fp->end) | |
1432 | if (cupsFileFlush(fp)) | |
1433 | return (-1); | |
1434 | ||
7e86f2f6 | 1435 | *(fp->ptr) ++ = (char)c; |
ef416fc2 | 1436 | } |
1437 | ||
1438 | fp->pos ++; | |
1439 | ||
e07d4801 | 1440 | DEBUG_printf(("4cupsFilePutChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1441 | |
ef416fc2 | 1442 | return (0); |
1443 | } | |
1444 | ||
1445 | ||
58dc1933 MS |
1446 | /* |
1447 | * 'cupsFilePutConf()' - Write a configuration line. | |
1448 | * | |
1449 | * This function handles any comment escaping of the value. | |
1450 | * | |
f3c17241 | 1451 | * @since CUPS 1.4/OS X 10.6@ |
58dc1933 MS |
1452 | */ |
1453 | ||
1454 | ssize_t /* O - Number of bytes written or -1 on error */ | |
1455 | cupsFilePutConf(cups_file_t *fp, /* I - CUPS file */ | |
1456 | const char *directive, /* I - Directive */ | |
1457 | const char *value) /* I - Value */ | |
1458 | { | |
1459 | ssize_t bytes, /* Number of bytes written */ | |
1460 | temp; /* Temporary byte count */ | |
1461 | const char *ptr; /* Pointer into value */ | |
1462 | ||
1463 | ||
1464 | if (!fp || !directive || !*directive) | |
1465 | return (-1); | |
1466 | ||
1467 | if ((bytes = cupsFilePuts(fp, directive)) < 0) | |
1468 | return (-1); | |
1469 | ||
1470 | if (cupsFilePutChar(fp, ' ') < 0) | |
1471 | return (-1); | |
1472 | bytes ++; | |
1473 | ||
1474 | if (value && *value) | |
1475 | { | |
1476 | if ((ptr = strchr(value, '#')) != NULL) | |
1477 | { | |
1478 | /* | |
1479 | * Need to quote the first # in the info string... | |
1480 | */ | |
1481 | ||
7e86f2f6 | 1482 | if ((temp = cupsFileWrite(fp, value, (size_t)(ptr - value))) < 0) |
58dc1933 MS |
1483 | return (-1); |
1484 | bytes += temp; | |
1485 | ||
1486 | if (cupsFilePutChar(fp, '\\') < 0) | |
1487 | return (-1); | |
1488 | bytes ++; | |
1489 | ||
1490 | if ((temp = cupsFilePuts(fp, ptr)) < 0) | |
1491 | return (-1); | |
1492 | bytes += temp; | |
1493 | } | |
1494 | else if ((temp = cupsFilePuts(fp, value)) < 0) | |
1495 | return (-1); | |
1496 | else | |
1497 | bytes += temp; | |
1498 | } | |
1499 | ||
1500 | if (cupsFilePutChar(fp, '\n') < 0) | |
1501 | return (-1); | |
1502 | else | |
1503 | return (bytes + 1); | |
1504 | } | |
1505 | ||
1506 | ||
ef416fc2 | 1507 | /* |
1508 | * 'cupsFilePuts()' - Write a string. | |
5a738aea MS |
1509 | * |
1510 | * Like the @code fputs@ function, no newline is appended to the string. | |
1511 | * | |
f3c17241 | 1512 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1513 | */ |
1514 | ||
5a738aea | 1515 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1516 | cupsFilePuts(cups_file_t *fp, /* I - CUPS file */ |
1517 | const char *s) /* I - String to write */ | |
1518 | { | |
2abf387c | 1519 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 1520 | |
1521 | ||
1522 | /* | |
1523 | * Range check input... | |
1524 | */ | |
1525 | ||
1526 | if (!fp || !s || (fp->mode != 'w' && fp->mode != 's')) | |
1527 | return (-1); | |
1528 | ||
1529 | /* | |
1530 | * Write the string... | |
1531 | */ | |
1532 | ||
7e86f2f6 | 1533 | bytes = (ssize_t)strlen(s); |
ef416fc2 | 1534 | |
1535 | if (fp->mode == 's') | |
1536 | { | |
7e86f2f6 | 1537 | if (cups_write(fp, s, (size_t)bytes) < 0) |
ef416fc2 | 1538 | return (-1); |
1539 | ||
1540 | fp->pos += bytes; | |
1541 | ||
e07d4801 | 1542 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1543 | |
7e86f2f6 | 1544 | return ((int)bytes); |
ef416fc2 | 1545 | } |
1546 | ||
1547 | if ((fp->ptr + bytes) > fp->end) | |
1548 | if (cupsFileFlush(fp)) | |
1549 | return (-1); | |
1550 | ||
1551 | fp->pos += bytes; | |
1552 | ||
e07d4801 | 1553 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1554 | |
7e86f2f6 | 1555 | if ((size_t)bytes > sizeof(fp->buf)) |
ef416fc2 | 1556 | { |
1557 | #ifdef HAVE_LIBZ | |
1558 | if (fp->compressed) | |
7e86f2f6 | 1559 | return ((int)cups_compress(fp, s, (size_t)bytes)); |
ef416fc2 | 1560 | else |
1561 | #endif /* HAVE_LIBZ */ | |
7e86f2f6 | 1562 | return ((int)cups_write(fp, s, (size_t)bytes)); |
ef416fc2 | 1563 | } |
1564 | else | |
1565 | { | |
07623986 | 1566 | memcpy(fp->ptr, s, (size_t)bytes); |
ef416fc2 | 1567 | fp->ptr += bytes; |
7e86f2f6 | 1568 | return ((int)bytes); |
ef416fc2 | 1569 | } |
1570 | } | |
1571 | ||
1572 | ||
1573 | /* | |
1574 | * 'cupsFileRead()' - Read from a file. | |
5a738aea | 1575 | * |
f3c17241 | 1576 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1577 | */ |
1578 | ||
5a738aea | 1579 | ssize_t /* O - Number of bytes read or -1 on error */ |
ef416fc2 | 1580 | cupsFileRead(cups_file_t *fp, /* I - CUPS file */ |
1581 | char *buf, /* O - Buffer */ | |
1582 | size_t bytes) /* I - Number of bytes to read */ | |
1583 | { | |
2abf387c | 1584 | size_t total; /* Total bytes read */ |
1585 | ssize_t count; /* Bytes read */ | |
ef416fc2 | 1586 | |
1587 | ||
e07d4801 | 1588 | DEBUG_printf(("2cupsFileRead(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 1589 | CUPS_LLCAST bytes)); |
ef416fc2 | 1590 | |
1591 | /* | |
1592 | * Range check input... | |
1593 | */ | |
1594 | ||
82f97232 | 1595 | if (!fp || !buf || (fp->mode != 'r' && fp->mode != 's')) |
ef416fc2 | 1596 | return (-1); |
1597 | ||
1598 | if (bytes == 0) | |
1599 | return (0); | |
1600 | ||
1601 | /* | |
1602 | * Loop until all bytes are read... | |
1603 | */ | |
1604 | ||
1605 | total = 0; | |
1606 | while (bytes > 0) | |
1607 | { | |
1608 | if (fp->ptr >= fp->end) | |
1609 | if (cups_fill(fp) <= 0) | |
1610 | { | |
e07d4801 MS |
1611 | DEBUG_printf(("4cupsFileRead: cups_fill() returned -1, total=" |
1612 | CUPS_LLFMT, CUPS_LLCAST total)); | |
ef416fc2 | 1613 | |
1614 | if (total > 0) | |
b86bc4cf | 1615 | return ((ssize_t)total); |
ef416fc2 | 1616 | else |
1617 | return (-1); | |
1618 | } | |
1619 | ||
b86bc4cf | 1620 | count = (ssize_t)(fp->end - fp->ptr); |
1621 | if (count > (ssize_t)bytes) | |
1622 | count = (ssize_t)bytes; | |
ef416fc2 | 1623 | |
07623986 | 1624 | memcpy(buf, fp->ptr,(size_t) count); |
ef416fc2 | 1625 | fp->ptr += count; |
634763e8 MS |
1626 | fp->pos += count; |
1627 | ||
e07d4801 | 1628 | DEBUG_printf(("4cupsFileRead: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1629 | |
1630 | /* | |
1631 | * Update the counts for the last read... | |
1632 | */ | |
1633 | ||
7e86f2f6 MS |
1634 | bytes -= (size_t)count; |
1635 | total += (size_t)count; | |
ef416fc2 | 1636 | buf += count; |
1637 | } | |
1638 | ||
1639 | /* | |
1640 | * Return the total number of bytes read... | |
1641 | */ | |
1642 | ||
e07d4801 | 1643 | DEBUG_printf(("3cupsFileRead: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
ef416fc2 | 1644 | |
b86bc4cf | 1645 | return ((ssize_t)total); |
ef416fc2 | 1646 | } |
1647 | ||
1648 | ||
1649 | /* | |
5a738aea MS |
1650 | * 'cupsFileRewind()' - Set the current file position to the beginning of the |
1651 | * file. | |
1652 | * | |
f3c17241 | 1653 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1654 | */ |
1655 | ||
5a738aea | 1656 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1657 | cupsFileRewind(cups_file_t *fp) /* I - CUPS file */ |
1658 | { | |
80ca4592 | 1659 | /* |
1660 | * Range check input... | |
1661 | */ | |
1662 | ||
e07d4801 MS |
1663 | DEBUG_printf(("cupsFileRewind(fp=%p)", fp)); |
1664 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); | |
634763e8 | 1665 | |
80ca4592 | 1666 | if (!fp || fp->mode != 'r') |
1667 | return (-1); | |
1668 | ||
1669 | /* | |
1670 | * Handle special cases... | |
1671 | */ | |
1672 | ||
634763e8 | 1673 | if (fp->bufpos == 0) |
80ca4592 | 1674 | { |
1675 | /* | |
1676 | * No seeking necessary... | |
1677 | */ | |
1678 | ||
634763e8 MS |
1679 | fp->pos = 0; |
1680 | ||
80ca4592 | 1681 | if (fp->ptr) |
1682 | { | |
1683 | fp->ptr = fp->buf; | |
1684 | fp->eof = 0; | |
1685 | } | |
1686 | ||
e07d4801 | 1687 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1688 | |
80ca4592 | 1689 | return (0); |
1690 | } | |
1691 | ||
1692 | /* | |
1693 | * Otherwise, seek in the file and cleanup any compression buffers... | |
1694 | */ | |
1695 | ||
1696 | #ifdef HAVE_LIBZ | |
1697 | if (fp->compressed) | |
1698 | { | |
1699 | inflateEnd(&fp->stream); | |
1700 | fp->compressed = 0; | |
1701 | } | |
1702 | #endif /* HAVE_LIBZ */ | |
1703 | ||
c9fc04c6 MS |
1704 | if (lseek(fp->fd, 0, SEEK_SET)) |
1705 | { | |
e07d4801 | 1706 | DEBUG_printf(("1cupsFileRewind: lseek failed: %s", strerror(errno))); |
c9fc04c6 MS |
1707 | return (-1); |
1708 | } | |
80ca4592 | 1709 | |
634763e8 MS |
1710 | fp->bufpos = 0; |
1711 | fp->pos = 0; | |
1712 | fp->ptr = NULL; | |
1713 | fp->end = NULL; | |
1714 | fp->eof = 0; | |
1715 | ||
e07d4801 | 1716 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
80ca4592 | 1717 | |
1718 | return (0); | |
ef416fc2 | 1719 | } |
1720 | ||
1721 | ||
1722 | /* | |
1723 | * 'cupsFileSeek()' - Seek in a file. | |
5a738aea | 1724 | * |
f3c17241 | 1725 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1726 | */ |
1727 | ||
5a738aea | 1728 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1729 | cupsFileSeek(cups_file_t *fp, /* I - CUPS file */ |
1730 | off_t pos) /* I - Position in file */ | |
1731 | { | |
2abf387c | 1732 | ssize_t bytes; /* Number bytes in buffer */ |
ef416fc2 | 1733 | |
1734 | ||
e07d4801 | 1735 | DEBUG_printf(("cupsFileSeek(fp=%p, pos=" CUPS_LLFMT ")", fp, |
634763e8 | 1736 | CUPS_LLCAST pos)); |
e07d4801 MS |
1737 | DEBUG_printf(("2cupsFileSeek: fp->pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
1738 | DEBUG_printf(("2cupsFileSeek: fp->ptr=%p, fp->end=%p", fp->ptr, fp->end)); | |
ef416fc2 | 1739 | |
1740 | /* | |
1741 | * Range check input... | |
1742 | */ | |
1743 | ||
1744 | if (!fp || pos < 0 || fp->mode != 'r') | |
1745 | return (-1); | |
1746 | ||
80ca4592 | 1747 | /* |
1748 | * Handle special cases... | |
1749 | */ | |
1750 | ||
1751 | if (pos == 0) | |
1752 | return (cupsFileRewind(fp)); | |
1753 | ||
634763e8 | 1754 | if (fp->ptr) |
b423cd4c | 1755 | { |
634763e8 | 1756 | bytes = (ssize_t)(fp->end - fp->buf); |
b423cd4c | 1757 | |
e07d4801 | 1758 | DEBUG_printf(("2cupsFileSeek: bytes=" CUPS_LLFMT, CUPS_LLCAST bytes)); |
c168a833 | 1759 | |
634763e8 | 1760 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
b423cd4c | 1761 | { |
634763e8 MS |
1762 | /* |
1763 | * No seeking necessary... | |
1764 | */ | |
1765 | ||
1766 | fp->pos = pos; | |
1767 | fp->ptr = fp->buf + pos - fp->bufpos; | |
b423cd4c | 1768 | fp->eof = 0; |
b423cd4c | 1769 | |
634763e8 MS |
1770 | return (pos); |
1771 | } | |
b423cd4c | 1772 | } |
1773 | ||
80ca4592 | 1774 | #ifdef HAVE_LIBZ |
1775 | if (!fp->compressed && !fp->ptr) | |
1776 | { | |
1777 | /* | |
1778 | * Preload a buffer to determine whether the file is compressed... | |
1779 | */ | |
1780 | ||
1781 | if (cups_fill(fp) < 0) | |
1782 | return (-1); | |
1783 | } | |
1784 | #endif /* HAVE_LIBZ */ | |
1785 | ||
ef416fc2 | 1786 | /* |
634763e8 | 1787 | * Seek forwards or backwards... |
ef416fc2 | 1788 | */ |
1789 | ||
ef416fc2 | 1790 | fp->eof = 0; |
1791 | ||
634763e8 | 1792 | if (pos < fp->bufpos) |
ef416fc2 | 1793 | { |
1794 | /* | |
1795 | * Need to seek backwards... | |
1796 | */ | |
1797 | ||
e07d4801 | 1798 | DEBUG_puts("2cupsFileSeek: SEEK BACKWARDS"); |
80ca4592 | 1799 | |
ef416fc2 | 1800 | #ifdef HAVE_LIBZ |
1801 | if (fp->compressed) | |
1802 | { | |
1803 | inflateEnd(&fp->stream); | |
1804 | ||
1805 | lseek(fp->fd, 0, SEEK_SET); | |
634763e8 MS |
1806 | fp->bufpos = 0; |
1807 | fp->pos = 0; | |
1808 | fp->ptr = NULL; | |
1809 | fp->end = NULL; | |
ef416fc2 | 1810 | |
1811 | while ((bytes = cups_fill(fp)) > 0) | |
634763e8 | 1812 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1813 | break; |
1814 | ||
1815 | if (bytes <= 0) | |
1816 | return (-1); | |
80ca4592 | 1817 | |
634763e8 MS |
1818 | fp->ptr = fp->buf + pos - fp->bufpos; |
1819 | fp->pos = pos; | |
ef416fc2 | 1820 | } |
1821 | else | |
1822 | #endif /* HAVE_LIBZ */ | |
1823 | { | |
634763e8 MS |
1824 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1825 | fp->pos = fp->bufpos; | |
1826 | fp->ptr = NULL; | |
1827 | fp->end = NULL; | |
80ca4592 | 1828 | |
e07d4801 | 1829 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1830 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1831 | } |
1832 | } | |
634763e8 | 1833 | else |
ef416fc2 | 1834 | { |
1835 | /* | |
1836 | * Need to seek forwards... | |
1837 | */ | |
1838 | ||
e07d4801 | 1839 | DEBUG_puts("2cupsFileSeek: SEEK FORWARDS"); |
80ca4592 | 1840 | |
ef416fc2 | 1841 | #ifdef HAVE_LIBZ |
80ca4592 | 1842 | if (fp->compressed) |
ef416fc2 | 1843 | { |
1844 | while ((bytes = cups_fill(fp)) > 0) | |
80ca4592 | 1845 | { |
634763e8 | 1846 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1847 | break; |
80ca4592 | 1848 | } |
ef416fc2 | 1849 | |
1850 | if (bytes <= 0) | |
1851 | return (-1); | |
80ca4592 | 1852 | |
634763e8 MS |
1853 | fp->ptr = fp->buf + pos - fp->bufpos; |
1854 | fp->pos = pos; | |
ef416fc2 | 1855 | } |
1856 | else | |
1857 | #endif /* HAVE_LIBZ */ | |
1858 | { | |
634763e8 MS |
1859 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1860 | fp->pos = fp->bufpos; | |
1861 | fp->ptr = NULL; | |
1862 | fp->end = NULL; | |
80ca4592 | 1863 | |
e07d4801 | 1864 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1865 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1866 | } |
1867 | } | |
ef416fc2 | 1868 | |
e07d4801 | 1869 | DEBUG_printf(("2cupsFileSeek: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1870 | |
1871 | return (fp->pos); | |
1872 | } | |
1873 | ||
1874 | ||
80ca4592 | 1875 | /* |
1876 | * 'cupsFileStderr()' - Return a CUPS file associated with stderr. | |
5a738aea | 1877 | * |
f3c17241 | 1878 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 1879 | */ |
1880 | ||
5a738aea | 1881 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1882 | cupsFileStderr(void) |
1883 | { | |
1884 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1885 | ||
1886 | ||
1887 | /* | |
1888 | * Open file descriptor 2 as needed... | |
1889 | */ | |
1890 | ||
1891 | if (!cg->stdio_files[2]) | |
1892 | { | |
1893 | /* | |
1894 | * Flush any pending output on the stdio file... | |
1895 | */ | |
1896 | ||
1897 | fflush(stderr); | |
1898 | ||
1899 | /* | |
1900 | * Open file descriptor 2... | |
1901 | */ | |
1902 | ||
1903 | if ((cg->stdio_files[2] = cupsFileOpenFd(2, "w")) != NULL) | |
1904 | cg->stdio_files[2]->is_stdio = 1; | |
1905 | } | |
1906 | ||
1907 | return (cg->stdio_files[2]); | |
1908 | } | |
1909 | ||
1910 | ||
1911 | /* | |
1912 | * 'cupsFileStdin()' - Return a CUPS file associated with stdin. | |
5a738aea | 1913 | * |
f3c17241 | 1914 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 1915 | */ |
1916 | ||
5a738aea | 1917 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1918 | cupsFileStdin(void) |
1919 | { | |
1920 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1921 | ||
1922 | ||
1923 | /* | |
1924 | * Open file descriptor 0 as needed... | |
1925 | */ | |
1926 | ||
1927 | if (!cg->stdio_files[0]) | |
1928 | { | |
1929 | /* | |
1930 | * Open file descriptor 0... | |
1931 | */ | |
1932 | ||
1933 | if ((cg->stdio_files[0] = cupsFileOpenFd(0, "r")) != NULL) | |
1934 | cg->stdio_files[0]->is_stdio = 1; | |
1935 | } | |
1936 | ||
1937 | return (cg->stdio_files[0]); | |
1938 | } | |
1939 | ||
1940 | ||
1941 | /* | |
1942 | * 'cupsFileStdout()' - Return a CUPS file associated with stdout. | |
5a738aea | 1943 | * |
f3c17241 | 1944 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 1945 | */ |
1946 | ||
5a738aea | 1947 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1948 | cupsFileStdout(void) |
1949 | { | |
1950 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1951 | ||
1952 | ||
1953 | /* | |
1954 | * Open file descriptor 1 as needed... | |
1955 | */ | |
1956 | ||
1957 | if (!cg->stdio_files[1]) | |
1958 | { | |
1959 | /* | |
1960 | * Flush any pending output on the stdio file... | |
1961 | */ | |
1962 | ||
1963 | fflush(stdout); | |
1964 | ||
1965 | /* | |
1966 | * Open file descriptor 1... | |
1967 | */ | |
1968 | ||
1969 | if ((cg->stdio_files[1] = cupsFileOpenFd(1, "w")) != NULL) | |
1970 | cg->stdio_files[1]->is_stdio = 1; | |
1971 | } | |
1972 | ||
1973 | return (cg->stdio_files[1]); | |
1974 | } | |
1975 | ||
1976 | ||
ef416fc2 | 1977 | /* |
1978 | * 'cupsFileTell()' - Return the current file position. | |
5a738aea | 1979 | * |
f3c17241 | 1980 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1981 | */ |
1982 | ||
1983 | off_t /* O - File position */ | |
1984 | cupsFileTell(cups_file_t *fp) /* I - CUPS file */ | |
1985 | { | |
e07d4801 MS |
1986 | DEBUG_printf(("2cupsFileTell(fp=%p)", fp)); |
1987 | DEBUG_printf(("3cupsFileTell: pos=" CUPS_LLFMT, | |
1988 | CUPS_LLCAST (fp ? fp->pos : -1))); | |
634763e8 | 1989 | |
80ca4592 | 1990 | return (fp ? fp->pos : 0); |
ef416fc2 | 1991 | } |
1992 | ||
1993 | ||
1994 | /* | |
1995 | * 'cupsFileUnlock()' - Unlock access to a file. | |
5a738aea | 1996 | * |
f3c17241 | 1997 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1998 | */ |
1999 | ||
2000 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 2001 | cupsFileUnlock(cups_file_t *fp) /* I - CUPS file */ |
ef416fc2 | 2002 | { |
2003 | /* | |
2004 | * Range check... | |
2005 | */ | |
2006 | ||
e07d4801 | 2007 | DEBUG_printf(("cupsFileUnlock(fp=%p)", fp)); |
634763e8 | 2008 | |
ef416fc2 | 2009 | if (!fp || fp->mode == 's') |
2010 | return (-1); | |
2011 | ||
2012 | /* | |
2013 | * Unlock... | |
2014 | */ | |
2015 | ||
2016 | #ifdef WIN32 | |
536bc2c6 | 2017 | return (_locking(fp->fd, _LK_UNLCK, 0)); |
ef416fc2 | 2018 | #else |
2019 | return (lockf(fp->fd, F_ULOCK, 0)); | |
2020 | #endif /* WIN32 */ | |
2021 | } | |
2022 | ||
2023 | ||
2024 | /* | |
2025 | * 'cupsFileWrite()' - Write to a file. | |
5a738aea | 2026 | * |
f3c17241 | 2027 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 2028 | */ |
2029 | ||
5a738aea | 2030 | ssize_t /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 2031 | cupsFileWrite(cups_file_t *fp, /* I - CUPS file */ |
2032 | const char *buf, /* I - Buffer */ | |
2033 | size_t bytes) /* I - Number of bytes to write */ | |
2034 | { | |
2035 | /* | |
2036 | * Range check input... | |
2037 | */ | |
2038 | ||
e07d4801 | 2039 | DEBUG_printf(("2cupsFileWrite(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", |
634763e8 MS |
2040 | fp, buf, CUPS_LLCAST bytes)); |
2041 | ||
82f97232 | 2042 | if (!fp || !buf || (fp->mode != 'w' && fp->mode != 's')) |
ef416fc2 | 2043 | return (-1); |
2044 | ||
2045 | if (bytes == 0) | |
2046 | return (0); | |
2047 | ||
2048 | /* | |
2049 | * Write the buffer... | |
2050 | */ | |
2051 | ||
2052 | if (fp->mode == 's') | |
2053 | { | |
2054 | if (cups_write(fp, buf, bytes) < 0) | |
2055 | return (-1); | |
2056 | ||
b86bc4cf | 2057 | fp->pos += (off_t)bytes; |
ef416fc2 | 2058 | |
e07d4801 | 2059 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2060 | |
b86bc4cf | 2061 | return ((ssize_t)bytes); |
ef416fc2 | 2062 | } |
2063 | ||
2064 | if ((fp->ptr + bytes) > fp->end) | |
2065 | if (cupsFileFlush(fp)) | |
2066 | return (-1); | |
2067 | ||
b86bc4cf | 2068 | fp->pos += (off_t)bytes; |
ef416fc2 | 2069 | |
e07d4801 | 2070 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2071 | |
ef416fc2 | 2072 | if (bytes > sizeof(fp->buf)) |
2073 | { | |
2074 | #ifdef HAVE_LIBZ | |
2075 | if (fp->compressed) | |
2076 | return (cups_compress(fp, buf, bytes)); | |
2077 | else | |
2078 | #endif /* HAVE_LIBZ */ | |
2079 | return (cups_write(fp, buf, bytes)); | |
2080 | } | |
2081 | else | |
2082 | { | |
2083 | memcpy(fp->ptr, buf, bytes); | |
2084 | fp->ptr += bytes; | |
b86bc4cf | 2085 | return ((ssize_t)bytes); |
ef416fc2 | 2086 | } |
2087 | } | |
2088 | ||
2089 | ||
2090 | #ifdef HAVE_LIBZ | |
2091 | /* | |
22c9029b | 2092 | * 'cups_compress()' - Compress a buffer of data. |
ef416fc2 | 2093 | */ |
2094 | ||
2095 | static ssize_t /* O - Number of bytes written or -1 */ | |
2096 | cups_compress(cups_file_t *fp, /* I - CUPS file */ | |
2097 | const char *buf, /* I - Buffer */ | |
2098 | size_t bytes) /* I - Number bytes */ | |
2099 | { | |
e07d4801 | 2100 | DEBUG_printf(("7cups_compress(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2101 | CUPS_LLCAST bytes)); |
ecdc0628 | 2102 | |
ef416fc2 | 2103 | /* |
2104 | * Update the CRC... | |
2105 | */ | |
2106 | ||
7e86f2f6 | 2107 | fp->crc = crc32(fp->crc, (const Bytef *)buf, (uInt)bytes); |
ef416fc2 | 2108 | |
2109 | /* | |
2110 | * Deflate the bytes... | |
2111 | */ | |
2112 | ||
2113 | fp->stream.next_in = (Bytef *)buf; | |
7e86f2f6 | 2114 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2115 | |
2116 | while (fp->stream.avail_in > 0) | |
2117 | { | |
2118 | /* | |
2119 | * Flush the current buffer... | |
2120 | */ | |
2121 | ||
e07d4801 | 2122 | DEBUG_printf(("9cups_compress: avail_in=%d, avail_out=%d", |
634763e8 | 2123 | fp->stream.avail_in, fp->stream.avail_out)); |
ecdc0628 | 2124 | |
7e86f2f6 | 2125 | if (fp->stream.avail_out < (uInt)(sizeof(fp->cbuf) / 8)) |
ef416fc2 | 2126 | { |
7e86f2f6 | 2127 | if (cups_write(fp, (char *)fp->cbuf, (size_t)(fp->stream.next_out - fp->cbuf)) < 0) |
ef416fc2 | 2128 | return (-1); |
ecdc0628 | 2129 | |
2130 | fp->stream.next_out = fp->cbuf; | |
2131 | fp->stream.avail_out = sizeof(fp->cbuf); | |
ef416fc2 | 2132 | } |
2133 | ||
2134 | deflate(&(fp->stream), Z_NO_FLUSH); | |
2135 | } | |
2136 | ||
7e86f2f6 | 2137 | return ((ssize_t)bytes); |
ef416fc2 | 2138 | } |
2139 | #endif /* HAVE_LIBZ */ | |
2140 | ||
2141 | ||
2142 | /* | |
22c9029b | 2143 | * 'cups_fill()' - Fill the input buffer. |
ef416fc2 | 2144 | */ |
2145 | ||
2146 | static ssize_t /* O - Number of bytes or -1 */ | |
2147 | cups_fill(cups_file_t *fp) /* I - CUPS file */ | |
2148 | { | |
2149 | ssize_t bytes; /* Number of bytes read */ | |
2150 | #ifdef HAVE_LIBZ | |
c277e2f8 | 2151 | int status; /* Decompression status */ |
ef416fc2 | 2152 | const unsigned char *ptr, /* Pointer into buffer */ |
2153 | *end; /* End of buffer */ | |
2154 | #endif /* HAVE_LIBZ */ | |
2155 | ||
2156 | ||
e07d4801 MS |
2157 | DEBUG_printf(("7cups_fill(fp=%p)", fp)); |
2158 | DEBUG_printf(("9cups_fill: fp->ptr=%p, fp->end=%p, fp->buf=%p, " | |
2159 | "fp->bufpos=" CUPS_LLFMT ", fp->eof=%d", | |
634763e8 | 2160 | fp->ptr, fp->end, fp->buf, CUPS_LLCAST fp->bufpos, fp->eof)); |
ef416fc2 | 2161 | |
2162 | if (fp->ptr && fp->end) | |
c9fc04c6 | 2163 | fp->bufpos += fp->end - fp->buf; |
ef416fc2 | 2164 | |
2165 | #ifdef HAVE_LIBZ | |
e07d4801 | 2166 | DEBUG_printf(("9cups_fill: fp->compressed=%d", fp->compressed)); |
b423cd4c | 2167 | |
ef416fc2 | 2168 | while (!fp->ptr || fp->compressed) |
2169 | { | |
2170 | /* | |
2171 | * Check to see if we have read any data yet; if not, see if we have a | |
2172 | * compressed file... | |
2173 | */ | |
2174 | ||
2175 | if (!fp->ptr) | |
2176 | { | |
2177 | /* | |
2178 | * Reset the file position in case we are seeking... | |
2179 | */ | |
2180 | ||
2181 | fp->compressed = 0; | |
ef416fc2 | 2182 | |
2183 | /* | |
2184 | * Read the first bytes in the file to determine if we have a gzip'd | |
2185 | * file... | |
2186 | */ | |
2187 | ||
fa73b229 | 2188 | if ((bytes = cups_read(fp, (char *)fp->buf, sizeof(fp->buf))) < 0) |
ef416fc2 | 2189 | { |
2190 | /* | |
2191 | * Can't read from file! | |
2192 | */ | |
2193 | ||
e07d4801 | 2194 | DEBUG_printf(("9cups_fill: cups_read() returned " CUPS_LLFMT, |
b423cd4c | 2195 | CUPS_LLCAST bytes)); |
2196 | ||
ef416fc2 | 2197 | return (-1); |
2198 | } | |
2199 | ||
fa73b229 | 2200 | if (bytes < 10 || fp->buf[0] != 0x1f || |
e00b005a | 2201 | (fp->buf[1] & 255) != 0x8b || |
fa73b229 | 2202 | fp->buf[2] != 8 || (fp->buf[3] & 0xe0) != 0) |
ef416fc2 | 2203 | { |
2204 | /* | |
2205 | * Not a gzip'd file! | |
2206 | */ | |
2207 | ||
ef416fc2 | 2208 | fp->ptr = fp->buf; |
2209 | fp->end = fp->buf + bytes; | |
2210 | ||
e07d4801 | 2211 | DEBUG_printf(("9cups_fill: Returning " CUPS_LLFMT, |
c9fc04c6 | 2212 | CUPS_LLCAST bytes)); |
b423cd4c | 2213 | |
ef416fc2 | 2214 | return (bytes); |
2215 | } | |
2216 | ||
2217 | /* | |
2218 | * Parse header junk: extra data, original name, and comment... | |
2219 | */ | |
2220 | ||
fa73b229 | 2221 | ptr = (unsigned char *)fp->buf + 10; |
2222 | end = (unsigned char *)fp->buf + bytes; | |
ef416fc2 | 2223 | |
fa73b229 | 2224 | if (fp->buf[3] & 0x04) |
ef416fc2 | 2225 | { |
2226 | /* | |
2227 | * Skip extra data... | |
2228 | */ | |
2229 | ||
2230 | if ((ptr + 2) > end) | |
2231 | { | |
2232 | /* | |
2233 | * Can't read from file! | |
2234 | */ | |
2235 | ||
2236 | return (-1); | |
2237 | } | |
2238 | ||
2239 | bytes = ((unsigned char)ptr[1] << 8) | (unsigned char)ptr[0]; | |
2240 | ptr += 2 + bytes; | |
2241 | ||
2242 | if (ptr > end) | |
2243 | { | |
2244 | /* | |
2245 | * Can't read from file! | |
2246 | */ | |
2247 | ||
2248 | return (-1); | |
2249 | } | |
2250 | } | |
2251 | ||
fa73b229 | 2252 | if (fp->buf[3] & 0x08) |
ef416fc2 | 2253 | { |
2254 | /* | |
2255 | * Skip original name data... | |
2256 | */ | |
2257 | ||
2258 | while (ptr < end && *ptr) | |
2259 | ptr ++; | |
2260 | ||
2261 | if (ptr < end) | |
2262 | ptr ++; | |
2263 | else | |
2264 | { | |
2265 | /* | |
2266 | * Can't read from file! | |
2267 | */ | |
2268 | ||
2269 | return (-1); | |
2270 | } | |
2271 | } | |
2272 | ||
fa73b229 | 2273 | if (fp->buf[3] & 0x10) |
ef416fc2 | 2274 | { |
2275 | /* | |
2276 | * Skip comment data... | |
2277 | */ | |
2278 | ||
2279 | while (ptr < end && *ptr) | |
2280 | ptr ++; | |
2281 | ||
2282 | if (ptr < end) | |
2283 | ptr ++; | |
2284 | else | |
2285 | { | |
2286 | /* | |
2287 | * Can't read from file! | |
2288 | */ | |
2289 | ||
2290 | return (-1); | |
2291 | } | |
2292 | } | |
2293 | ||
fa73b229 | 2294 | if (fp->buf[3] & 0x02) |
ef416fc2 | 2295 | { |
2296 | /* | |
2297 | * Skip header CRC data... | |
2298 | */ | |
2299 | ||
2300 | ptr += 2; | |
2301 | ||
2302 | if (ptr > end) | |
2303 | { | |
2304 | /* | |
2305 | * Can't read from file! | |
2306 | */ | |
2307 | ||
2308 | return (-1); | |
2309 | } | |
2310 | } | |
2311 | ||
fa73b229 | 2312 | /* |
2313 | * Copy the flate-compressed data to the compression buffer... | |
2314 | */ | |
2315 | ||
2316 | if ((bytes = end - ptr) > 0) | |
07623986 | 2317 | memcpy(fp->cbuf, ptr, (size_t)bytes); |
fa73b229 | 2318 | |
ef416fc2 | 2319 | /* |
2320 | * Setup the decompressor data... | |
2321 | */ | |
2322 | ||
2323 | fp->stream.zalloc = (alloc_func)0; | |
2324 | fp->stream.zfree = (free_func)0; | |
2325 | fp->stream.opaque = (voidpf)0; | |
fa73b229 | 2326 | fp->stream.next_in = (Bytef *)fp->cbuf; |
ef416fc2 | 2327 | fp->stream.next_out = NULL; |
7e86f2f6 | 2328 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2329 | fp->stream.avail_out = 0; |
2330 | fp->crc = crc32(0L, Z_NULL, 0); | |
2331 | ||
2332 | if (inflateInit2(&(fp->stream), -15) != Z_OK) | |
2333 | return (-1); | |
2334 | ||
2335 | fp->compressed = 1; | |
2336 | } | |
2337 | ||
2338 | if (fp->compressed) | |
2339 | { | |
2340 | /* | |
2341 | * If we have reached end-of-file, return immediately... | |
2342 | */ | |
2343 | ||
2344 | if (fp->eof) | |
2345 | return (-1); | |
2346 | ||
2347 | /* | |
2348 | * Fill the decompression buffer as needed... | |
2349 | */ | |
2350 | ||
2351 | if (fp->stream.avail_in == 0) | |
2352 | { | |
2353 | if ((bytes = cups_read(fp, (char *)fp->cbuf, sizeof(fp->cbuf))) <= 0) | |
2354 | return (-1); | |
2355 | ||
2356 | fp->stream.next_in = fp->cbuf; | |
7e86f2f6 | 2357 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2358 | } |
2359 | ||
2360 | /* | |
2361 | * Decompress data from the buffer... | |
2362 | */ | |
2363 | ||
2364 | fp->stream.next_out = (Bytef *)fp->buf; | |
2365 | fp->stream.avail_out = sizeof(fp->buf); | |
2366 | ||
c277e2f8 MS |
2367 | status = inflate(&(fp->stream), Z_NO_FLUSH); |
2368 | ||
2369 | if (fp->stream.next_out > (Bytef *)fp->buf) | |
2370 | fp->crc = crc32(fp->crc, (Bytef *)fp->buf, | |
7e86f2f6 | 2371 | (uInt)(fp->stream.next_out - (Bytef *)fp->buf)); |
c277e2f8 MS |
2372 | |
2373 | if (status == Z_STREAM_END) | |
ef416fc2 | 2374 | { |
2375 | /* | |
2376 | * Read the CRC and length... | |
2377 | */ | |
2378 | ||
2379 | unsigned char trailer[8]; /* Trailer bytes */ | |
2380 | uLong tcrc; /* Trailer CRC */ | |
2381 | ||
2382 | ||
7e86f2f6 | 2383 | if (read(fp->fd, trailer, sizeof(trailer)) < (ssize_t)sizeof(trailer)) |
ef416fc2 | 2384 | { |
2385 | /* | |
2386 | * Can't get it, so mark end-of-file... | |
2387 | */ | |
2388 | ||
2389 | fp->eof = 1; | |
ef416fc2 | 2390 | } |
fa73b229 | 2391 | else |
2392 | { | |
da003234 MS |
2393 | tcrc = ((((((uLong)trailer[3] << 8) | (uLong)trailer[2]) << 8) | |
2394 | (uLong)trailer[1]) << 8) | (uLong)trailer[0]; | |
ef416fc2 | 2395 | |
fa73b229 | 2396 | if (tcrc != fp->crc) |
2397 | { | |
2398 | /* | |
2399 | * Bad CRC, mark end-of-file... | |
2400 | */ | |
2401 | ||
da003234 | 2402 | DEBUG_printf(("9cups_fill: tcrc=%08x != fp->crc=%08x", |
c277e2f8 MS |
2403 | (unsigned int)tcrc, (unsigned int)fp->crc)); |
2404 | ||
fa73b229 | 2405 | fp->eof = 1; |
2406 | ||
2407 | return (-1); | |
2408 | } | |
ef416fc2 | 2409 | |
ef416fc2 | 2410 | /* |
fa73b229 | 2411 | * Otherwise, reset the compressed flag so that we re-read the |
2412 | * file header... | |
ef416fc2 | 2413 | */ |
ef416fc2 | 2414 | |
fa73b229 | 2415 | fp->compressed = 0; |
ef416fc2 | 2416 | } |
ef416fc2 | 2417 | } |
2418 | ||
7e86f2f6 | 2419 | bytes = (ssize_t)sizeof(fp->buf) - (ssize_t)fp->stream.avail_out; |
ef416fc2 | 2420 | |
2421 | /* | |
2422 | * Return the decompressed data... | |
2423 | */ | |
2424 | ||
2425 | fp->ptr = fp->buf; | |
2426 | fp->end = fp->buf + bytes; | |
2427 | ||
fa73b229 | 2428 | if (bytes) |
2429 | return (bytes); | |
ef416fc2 | 2430 | } |
2431 | } | |
2432 | #endif /* HAVE_LIBZ */ | |
2433 | ||
2434 | /* | |
2435 | * Read a buffer's full of data... | |
2436 | */ | |
2437 | ||
2438 | if ((bytes = cups_read(fp, fp->buf, sizeof(fp->buf))) <= 0) | |
2439 | { | |
2440 | /* | |
2441 | * Can't read from file! | |
2442 | */ | |
2443 | ||
2444 | fp->eof = 1; | |
2445 | fp->ptr = fp->buf; | |
2446 | fp->end = fp->buf; | |
2447 | ||
2448 | return (-1); | |
2449 | } | |
2450 | ||
2451 | /* | |
2452 | * Return the bytes we read... | |
2453 | */ | |
2454 | ||
2455 | fp->eof = 0; | |
2456 | fp->ptr = fp->buf; | |
2457 | fp->end = fp->buf + bytes; | |
2458 | ||
2459 | return (bytes); | |
2460 | } | |
2461 | ||
2462 | ||
c7017ecc MS |
2463 | /* |
2464 | * 'cups_open()' - Safely open a file for writing. | |
2465 | * | |
2466 | * We don't allow appending to directories or files that are hard-linked or | |
2467 | * symlinked. | |
2468 | */ | |
2469 | ||
2470 | static int /* O - File descriptor or -1 otherwise */ | |
2471 | cups_open(const char *filename, /* I - Filename */ | |
2472 | int mode) /* I - Open mode */ | |
2473 | { | |
2474 | int fd; /* File descriptor */ | |
2475 | struct stat fileinfo; /* File information */ | |
2476 | #ifndef WIN32 | |
2477 | struct stat linkinfo; /* Link information */ | |
2478 | #endif /* !WIN32 */ | |
2479 | ||
2480 | ||
2481 | /* | |
2482 | * Open the file... | |
2483 | */ | |
2484 | ||
2485 | if ((fd = open(filename, mode, 0666)) < 0) | |
2486 | return (-1); | |
2487 | ||
2488 | /* | |
2489 | * Then verify that the file descriptor doesn't point to a directory or hard- | |
2490 | * linked file. | |
2491 | */ | |
2492 | ||
2493 | if (fstat(fd, &fileinfo)) | |
2494 | { | |
2495 | close(fd); | |
2496 | return (-1); | |
2497 | } | |
2498 | ||
2499 | if (fileinfo.st_nlink != 1) | |
2500 | { | |
2501 | close(fd); | |
2502 | errno = EPERM; | |
2503 | return (-1); | |
2504 | } | |
2505 | ||
2506 | #ifdef WIN32 | |
2507 | if (fileinfo.st_mode & _S_IFDIR) | |
2508 | #else | |
2509 | if (S_ISDIR(fileinfo.st_mode)) | |
2510 | #endif /* WIN32 */ | |
2511 | { | |
2512 | close(fd); | |
2513 | errno = EISDIR; | |
2514 | return (-1); | |
2515 | } | |
2516 | ||
2517 | #ifndef WIN32 | |
2518 | /* | |
2519 | * Then use lstat to determine whether the filename is a symlink... | |
2520 | */ | |
2521 | ||
2522 | if (lstat(filename, &linkinfo)) | |
2523 | { | |
2524 | close(fd); | |
2525 | return (-1); | |
2526 | } | |
2527 | ||
2528 | if (S_ISLNK(linkinfo.st_mode) || | |
2529 | fileinfo.st_dev != linkinfo.st_dev || | |
2530 | fileinfo.st_ino != linkinfo.st_ino || | |
2531 | #ifdef HAVE_ST_GEN | |
2532 | fileinfo.st_gen != linkinfo.st_gen || | |
2533 | #endif /* HAVE_ST_GEN */ | |
2534 | fileinfo.st_nlink != linkinfo.st_nlink || | |
2535 | fileinfo.st_mode != linkinfo.st_mode) | |
2536 | { | |
2537 | /* | |
2538 | * Yes, don't allow! | |
2539 | */ | |
2540 | ||
2541 | close(fd); | |
2542 | errno = EPERM; | |
2543 | return (-1); | |
2544 | } | |
2545 | #endif /* !WIN32 */ | |
2546 | ||
2547 | return (fd); | |
2548 | } | |
2549 | ||
2550 | ||
ef416fc2 | 2551 | /* |
2552 | * 'cups_read()' - Read from a file descriptor. | |
2553 | */ | |
2554 | ||
2555 | static ssize_t /* O - Number of bytes read or -1 */ | |
2556 | cups_read(cups_file_t *fp, /* I - CUPS file */ | |
2557 | char *buf, /* I - Buffer */ | |
2558 | size_t bytes) /* I - Number bytes */ | |
2559 | { | |
2560 | ssize_t total; /* Total bytes read */ | |
2561 | ||
2562 | ||
e07d4801 | 2563 | DEBUG_printf(("7cups_read(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
2564 | CUPS_LLCAST bytes)); |
2565 | ||
ef416fc2 | 2566 | /* |
2567 | * Loop until we read at least 0 bytes... | |
2568 | */ | |
2569 | ||
2570 | for (;;) | |
2571 | { | |
b86bc4cf | 2572 | #ifdef WIN32 |
2573 | if (fp->mode == 's') | |
2574 | total = (ssize_t)recv(fp->fd, buf, (unsigned)bytes, 0); | |
2575 | else | |
2576 | total = (ssize_t)read(fp->fd, buf, (unsigned)bytes); | |
2577 | #else | |
ef416fc2 | 2578 | if (fp->mode == 's') |
2579 | total = recv(fp->fd, buf, bytes, 0); | |
2580 | else | |
2581 | total = read(fp->fd, buf, bytes); | |
b86bc4cf | 2582 | #endif /* WIN32 */ |
ef416fc2 | 2583 | |
e07d4801 | 2584 | DEBUG_printf(("9cups_read: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
634763e8 | 2585 | |
ef416fc2 | 2586 | if (total >= 0) |
2587 | break; | |
2588 | ||
2589 | /* | |
2590 | * Reads can be interrupted by signals and unavailable resources... | |
2591 | */ | |
2592 | ||
2593 | if (errno == EAGAIN || errno == EINTR) | |
2594 | continue; | |
2595 | else | |
2596 | return (-1); | |
2597 | } | |
2598 | ||
2599 | /* | |
2600 | * Return the total number of bytes read... | |
2601 | */ | |
2602 | ||
2603 | return (total); | |
2604 | } | |
2605 | ||
2606 | ||
2607 | /* | |
2608 | * 'cups_write()' - Write to a file descriptor. | |
2609 | */ | |
2610 | ||
2611 | static ssize_t /* O - Number of bytes written or -1 */ | |
2612 | cups_write(cups_file_t *fp, /* I - CUPS file */ | |
2613 | const char *buf, /* I - Buffer */ | |
2614 | size_t bytes) /* I - Number bytes */ | |
2615 | { | |
2abf387c | 2616 | size_t total; /* Total bytes written */ |
2617 | ssize_t count; /* Count this time */ | |
ef416fc2 | 2618 | |
2619 | ||
e07d4801 | 2620 | DEBUG_printf(("7cups_write(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2621 | CUPS_LLCAST bytes)); |
ecdc0628 | 2622 | |
ef416fc2 | 2623 | /* |
2624 | * Loop until all bytes are written... | |
2625 | */ | |
2626 | ||
2627 | total = 0; | |
2628 | while (bytes > 0) | |
2629 | { | |
b86bc4cf | 2630 | #ifdef WIN32 |
2631 | if (fp->mode == 's') | |
2632 | count = (ssize_t)send(fp->fd, buf, (unsigned)bytes, 0); | |
2633 | else | |
2634 | count = (ssize_t)write(fp->fd, buf, (unsigned)bytes); | |
2635 | #else | |
ef416fc2 | 2636 | if (fp->mode == 's') |
2637 | count = send(fp->fd, buf, bytes, 0); | |
2638 | else | |
2639 | count = write(fp->fd, buf, bytes); | |
b86bc4cf | 2640 | #endif /* WIN32 */ |
ef416fc2 | 2641 | |
e07d4801 | 2642 | DEBUG_printf(("9cups_write: count=" CUPS_LLFMT, CUPS_LLCAST count)); |
634763e8 | 2643 | |
ef416fc2 | 2644 | if (count < 0) |
2645 | { | |
2646 | /* | |
2647 | * Writes can be interrupted by signals and unavailable resources... | |
2648 | */ | |
2649 | ||
2650 | if (errno == EAGAIN || errno == EINTR) | |
2651 | continue; | |
2652 | else | |
2653 | return (-1); | |
2654 | } | |
2655 | ||
2656 | /* | |
2657 | * Update the counts for the last write call... | |
2658 | */ | |
2659 | ||
7e86f2f6 MS |
2660 | bytes -= (size_t)count; |
2661 | total += (size_t)count; | |
ef416fc2 | 2662 | buf += count; |
2663 | } | |
2664 | ||
2665 | /* | |
2666 | * Return the total number of bytes written... | |
2667 | */ | |
2668 | ||
b86bc4cf | 2669 | return ((ssize_t)total); |
ef416fc2 | 2670 | } |
2671 | ||
2672 | ||
2673 | /* | |
f2d18633 | 2674 | * End of "$Id$". |
ef416fc2 | 2675 | */ |