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Commit | Line | Data |
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ef416fc2 | 1 | /* |
f2d18633 | 2 | * "$Id$" |
ef416fc2 | 3 | * |
da003234 | 4 | * File functions for CUPS. |
ef416fc2 | 5 | * |
da003234 MS |
6 | * Since stdio files max out at 256 files on many systems, we have to |
7 | * write similar functions without this limit. At the same time, using | |
8 | * our own file functions allows us to provide transparent support of | |
9 | * gzip'd print files, PPD files, etc. | |
ef416fc2 | 10 | * |
cbf9404a | 11 | * Copyright 2007-2015 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 | { | |
8d5b58f6 | 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 | ||
807315e6 | 329 | DEBUG_printf(("cupsFileClose(fp=%p)", (void *)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, | |
7e86f2f6 | 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 | ||
7e86f2f6 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 | { | |
87e98392 | 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 | ||
807315e6 | 499 | DEBUG_printf(("cupsFileFind(filename=\"%s\", path=\"%s\", executable=%d, buffer=%p, bufsize=%d)", filename, path, executable, (void *)buffer, bufsize)); |
e07d4801 | 500 | |
fa73b229 | 501 | if (!filename || !buffer || bufsize < 2) |
502 | return (NULL); | |
503 | ||
504 | if (!path) | |
505 | { | |
506 | /* | |
507 | * No path, so check current directory... | |
508 | */ | |
509 | ||
510 | if (!access(filename, 0)) | |
511 | { | |
07623986 | 512 | strlcpy(buffer, filename, (size_t)bufsize); |
fa73b229 | 513 | return (buffer); |
514 | } | |
515 | else | |
516 | return (NULL); | |
517 | } | |
518 | ||
519 | /* | |
520 | * Now check each path and return the first match... | |
521 | */ | |
522 | ||
523 | bufend = buffer + bufsize - 1; | |
524 | bufptr = buffer; | |
525 | ||
526 | while (*path) | |
527 | { | |
b86bc4cf | 528 | #ifdef WIN32 |
529 | if (*path == ';' || (*path == ':' && ((bufptr - buffer) > 1 || !isalpha(buffer[0] & 255)))) | |
530 | #else | |
fa73b229 | 531 | if (*path == ';' || *path == ':') |
b86bc4cf | 532 | #endif /* WIN32 */ |
fa73b229 | 533 | { |
534 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
535 | *bufptr++ = '/'; | |
536 | ||
07623986 | 537 | strlcpy(bufptr, filename, (size_t)(bufend - bufptr)); |
fa73b229 | 538 | |
4400e98d | 539 | #ifdef WIN32 |
fa73b229 | 540 | if (!access(buffer, 0)) |
4400e98d | 541 | #else |
542 | if (!access(buffer, executable ? X_OK : 0)) | |
543 | #endif /* WIN32 */ | |
b86bc4cf | 544 | { |
e07d4801 | 545 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 546 | return (buffer); |
b86bc4cf | 547 | } |
fa73b229 | 548 | |
549 | bufptr = buffer; | |
550 | } | |
551 | else if (bufptr < bufend) | |
552 | *bufptr++ = *path; | |
553 | ||
554 | path ++; | |
555 | } | |
556 | ||
557 | /* | |
558 | * Check the last path... | |
559 | */ | |
560 | ||
561 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
562 | *bufptr++ = '/'; | |
563 | ||
07623986 | 564 | strlcpy(bufptr, filename, (size_t)(bufend - bufptr)); |
fa73b229 | 565 | |
566 | if (!access(buffer, 0)) | |
b86bc4cf | 567 | { |
e07d4801 | 568 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 569 | return (buffer); |
b86bc4cf | 570 | } |
fa73b229 | 571 | else |
b86bc4cf | 572 | { |
e07d4801 | 573 | DEBUG_puts("1cupsFileFind: Returning NULL"); |
fa73b229 | 574 | return (NULL); |
b86bc4cf | 575 | } |
fa73b229 | 576 | } |
577 | ||
578 | ||
ef416fc2 | 579 | /* |
580 | * 'cupsFileFlush()' - Flush pending output. | |
5a738aea | 581 | * |
f3c17241 | 582 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 583 | */ |
584 | ||
585 | int /* O - 0 on success, -1 on error */ | |
586 | cupsFileFlush(cups_file_t *fp) /* I - CUPS file */ | |
587 | { | |
2abf387c | 588 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 589 | |
590 | ||
807315e6 | 591 | DEBUG_printf(("cupsFileFlush(fp=%p)", (void *)fp)); |
ef416fc2 | 592 | |
593 | /* | |
594 | * Range check input... | |
595 | */ | |
596 | ||
597 | if (!fp || fp->mode != 'w') | |
598 | { | |
e07d4801 | 599 | DEBUG_puts("1cupsFileFlush: Attempt to flush a read-only file..."); |
ef416fc2 | 600 | return (-1); |
601 | } | |
602 | ||
b86bc4cf | 603 | bytes = (ssize_t)(fp->ptr - fp->buf); |
ef416fc2 | 604 | |
e07d4801 | 605 | DEBUG_printf(("2cupsFileFlush: Flushing " CUPS_LLFMT " bytes...", |
634763e8 | 606 | CUPS_LLCAST bytes)); |
ecdc0628 | 607 | |
ef416fc2 | 608 | if (bytes > 0) |
609 | { | |
610 | #ifdef HAVE_LIBZ | |
611 | if (fp->compressed) | |
7e86f2f6 | 612 | bytes = cups_compress(fp, fp->buf, (size_t)bytes); |
ef416fc2 | 613 | else |
614 | #endif /* HAVE_LIBZ */ | |
7e86f2f6 | 615 | bytes = cups_write(fp, fp->buf, (size_t)bytes); |
ef416fc2 | 616 | |
617 | if (bytes < 0) | |
618 | return (-1); | |
619 | ||
620 | fp->ptr = fp->buf; | |
621 | } | |
f14324a7 | 622 | |
ef416fc2 | 623 | return (0); |
624 | } | |
625 | ||
626 | ||
627 | /* | |
628 | * 'cupsFileGetChar()' - Get a single character from a file. | |
5a738aea | 629 | * |
f3c17241 | 630 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 631 | */ |
632 | ||
5a738aea | 633 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 634 | cupsFileGetChar(cups_file_t *fp) /* I - CUPS file */ |
635 | { | |
636 | /* | |
637 | * Range check input... | |
638 | */ | |
639 | ||
807315e6 | 640 | DEBUG_printf(("4cupsFileGetChar(fp=%p)", (void *)fp)); |
cbf9404a | 641 | |
ef416fc2 | 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 | ||
807315e6 | 652 | DEBUG_printf(("5cupsFileGetChar: fp->eof=%d, fp->ptr=%p, fp->end=%p", fp->eof, (void *)fp->ptr, (void *)fp->end)); |
cbf9404a | 653 | |
ef416fc2 | 654 | if (fp->ptr >= fp->end) |
cbf9404a | 655 | if (cups_fill(fp) <= 0) |
b86bc4cf | 656 | { |
f14324a7 | 657 | DEBUG_puts("5cupsFileGetChar: Unable to fill buffer!"); |
ef416fc2 | 658 | return (-1); |
b86bc4cf | 659 | } |
ef416fc2 | 660 | |
661 | /* | |
662 | * Return the next character in the buffer... | |
663 | */ | |
664 | ||
f14324a7 | 665 | DEBUG_printf(("5cupsFileGetChar: Returning %d...", *(fp->ptr) & 255)); |
b86bc4cf | 666 | |
634763e8 MS |
667 | fp->pos ++; |
668 | ||
f14324a7 | 669 | DEBUG_printf(("6cupsFileGetChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 670 | |
ef416fc2 | 671 | return (*(fp->ptr)++ & 255); |
672 | } | |
673 | ||
674 | ||
675 | /* | |
22c9029b | 676 | * 'cupsFileGetConf()' - Get a line from a configuration file. |
5a738aea | 677 | * |
f3c17241 | 678 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 679 | */ |
680 | ||
5a738aea | 681 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 682 | cupsFileGetConf(cups_file_t *fp, /* I - CUPS file */ |
683 | char *buf, /* O - String buffer */ | |
684 | size_t buflen, /* I - Size of string buffer */ | |
685 | char **value, /* O - Pointer to value */ | |
686 | int *linenum) /* IO - Current line number */ | |
687 | { | |
688 | char *ptr; /* Pointer into line */ | |
689 | ||
690 | ||
691 | /* | |
692 | * Range check input... | |
693 | */ | |
694 | ||
e07d4801 | 695 | DEBUG_printf(("2cupsFileGetConf(fp=%p, buf=%p, buflen=" CUPS_LLFMT |
807315e6 | 696 | ", value=%p, linenum=%p)", (void *)fp, (void *)buf, CUPS_LLCAST buflen, (void *)value, (void *)linenum)); |
634763e8 | 697 | |
ef416fc2 | 698 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || |
699 | !buf || buflen < 2 || !value) | |
700 | { | |
701 | if (value) | |
702 | *value = NULL; | |
703 | ||
704 | return (NULL); | |
705 | } | |
706 | ||
707 | /* | |
708 | * Read the next non-comment line... | |
709 | */ | |
710 | ||
711 | *value = NULL; | |
f7deaa1a | 712 | |
ef416fc2 | 713 | while (cupsFileGets(fp, buf, buflen)) |
714 | { | |
715 | (*linenum) ++; | |
716 | ||
717 | /* | |
718 | * Strip any comments... | |
719 | */ | |
720 | ||
721 | if ((ptr = strchr(buf, '#')) != NULL) | |
722 | { | |
f7deaa1a | 723 | if (ptr > buf && ptr[-1] == '\\') |
ef416fc2 | 724 | { |
f7deaa1a | 725 | // Unquote the #... |
726 | _cups_strcpy(ptr - 1, ptr); | |
ef416fc2 | 727 | } |
f7deaa1a | 728 | else |
729 | { | |
730 | // Strip the comment and any trailing whitespace... | |
731 | while (ptr > buf) | |
732 | { | |
7cf5915e | 733 | if (!_cups_isspace(ptr[-1])) |
f7deaa1a | 734 | break; |
735 | ||
736 | ptr --; | |
737 | } | |
ef416fc2 | 738 | |
f7deaa1a | 739 | *ptr = '\0'; |
740 | } | |
ef416fc2 | 741 | } |
742 | ||
743 | /* | |
744 | * Strip leading whitespace... | |
745 | */ | |
746 | ||
7cf5915e | 747 | for (ptr = buf; _cups_isspace(*ptr); ptr ++); |
ef416fc2 | 748 | |
749 | if (ptr > buf) | |
750 | _cups_strcpy(buf, ptr); | |
751 | ||
752 | /* | |
753 | * See if there is anything left... | |
754 | */ | |
755 | ||
756 | if (buf[0]) | |
757 | { | |
758 | /* | |
759 | * Yes, grab any value and return... | |
760 | */ | |
761 | ||
762 | for (ptr = buf; *ptr; ptr ++) | |
7cf5915e | 763 | if (_cups_isspace(*ptr)) |
ef416fc2 | 764 | break; |
765 | ||
766 | if (*ptr) | |
767 | { | |
768 | /* | |
769 | * Have a value, skip any other spaces... | |
770 | */ | |
771 | ||
7cf5915e | 772 | while (_cups_isspace(*ptr)) |
ef416fc2 | 773 | *ptr++ = '\0'; |
774 | ||
775 | if (*ptr) | |
776 | *value = ptr; | |
777 | ||
778 | /* | |
779 | * Strip trailing whitespace and > for lines that begin with <... | |
780 | */ | |
781 | ||
782 | ptr += strlen(ptr) - 1; | |
783 | ||
784 | if (buf[0] == '<' && *ptr == '>') | |
785 | *ptr-- = '\0'; | |
786 | else if (buf[0] == '<' && *ptr != '>') | |
787 | { | |
788 | /* | |
789 | * Syntax error... | |
790 | */ | |
791 | ||
792 | *value = NULL; | |
793 | return (buf); | |
794 | } | |
795 | ||
7cf5915e | 796 | while (ptr > *value && _cups_isspace(*ptr)) |
ef416fc2 | 797 | *ptr-- = '\0'; |
798 | } | |
799 | ||
800 | /* | |
801 | * Return the line... | |
802 | */ | |
803 | ||
804 | return (buf); | |
805 | } | |
806 | } | |
807 | ||
808 | return (NULL); | |
809 | } | |
810 | ||
811 | ||
80ca4592 | 812 | /* |
813 | * 'cupsFileGetLine()' - Get a CR and/or LF-terminated line that may | |
814 | * contain binary data. | |
815 | * | |
5a738aea MS |
816 | * This function differs from @link cupsFileGets@ in that the trailing CR |
817 | * and LF are preserved, as is any binary data on the line. The buffer is | |
818 | * nul-terminated, however you should use the returned length to determine | |
80ca4592 | 819 | * the number of bytes on the line. |
5a738aea | 820 | * |
f3c17241 | 821 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 822 | */ |
823 | ||
5a738aea | 824 | size_t /* O - Number of bytes on line or 0 on end of file */ |
80ca4592 | 825 | cupsFileGetLine(cups_file_t *fp, /* I - File to read from */ |
826 | char *buf, /* I - Buffer */ | |
827 | size_t buflen) /* I - Size of buffer */ | |
828 | { | |
829 | int ch; /* Character from file */ | |
830 | char *ptr, /* Current position in line buffer */ | |
831 | *end; /* End of line buffer */ | |
832 | ||
833 | ||
834 | /* | |
835 | * Range check input... | |
836 | */ | |
837 | ||
807315e6 | 838 | DEBUG_printf(("2cupsFileGetLine(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST buflen)); |
634763e8 | 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 | |
7e86f2f6 | 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 | ||
807315e6 | 912 | DEBUG_printf(("2cupsFileGets(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST buflen)); |
634763e8 | 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) | |
cbf9404a | 1286 | if (cups_fill(fp) <= 0) |
ef416fc2 | 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 | |
807315e6 | 1312 | DEBUG_printf(("2cupsFilePrintf(fp=%p, format=\"%s\", ...)", (void *)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 | ||
807315e6 | 1588 | DEBUG_printf(("2cupsFileRead(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST bytes)); |
ef416fc2 | 1589 | |
1590 | /* | |
1591 | * Range check input... | |
1592 | */ | |
1593 | ||
82f97232 | 1594 | if (!fp || !buf || (fp->mode != 'r' && fp->mode != 's')) |
ef416fc2 | 1595 | return (-1); |
1596 | ||
1597 | if (bytes == 0) | |
1598 | return (0); | |
1599 | ||
1600 | /* | |
1601 | * Loop until all bytes are read... | |
1602 | */ | |
1603 | ||
1604 | total = 0; | |
1605 | while (bytes > 0) | |
1606 | { | |
1607 | if (fp->ptr >= fp->end) | |
1608 | if (cups_fill(fp) <= 0) | |
1609 | { | |
e07d4801 MS |
1610 | DEBUG_printf(("4cupsFileRead: cups_fill() returned -1, total=" |
1611 | CUPS_LLFMT, CUPS_LLCAST total)); | |
ef416fc2 | 1612 | |
1613 | if (total > 0) | |
b86bc4cf | 1614 | return ((ssize_t)total); |
ef416fc2 | 1615 | else |
1616 | return (-1); | |
1617 | } | |
1618 | ||
b86bc4cf | 1619 | count = (ssize_t)(fp->end - fp->ptr); |
1620 | if (count > (ssize_t)bytes) | |
1621 | count = (ssize_t)bytes; | |
ef416fc2 | 1622 | |
07623986 | 1623 | memcpy(buf, fp->ptr,(size_t) count); |
ef416fc2 | 1624 | fp->ptr += count; |
634763e8 MS |
1625 | fp->pos += count; |
1626 | ||
e07d4801 | 1627 | DEBUG_printf(("4cupsFileRead: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1628 | |
1629 | /* | |
1630 | * Update the counts for the last read... | |
1631 | */ | |
1632 | ||
7e86f2f6 MS |
1633 | bytes -= (size_t)count; |
1634 | total += (size_t)count; | |
ef416fc2 | 1635 | buf += count; |
1636 | } | |
1637 | ||
1638 | /* | |
1639 | * Return the total number of bytes read... | |
1640 | */ | |
1641 | ||
e07d4801 | 1642 | DEBUG_printf(("3cupsFileRead: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
ef416fc2 | 1643 | |
b86bc4cf | 1644 | return ((ssize_t)total); |
ef416fc2 | 1645 | } |
1646 | ||
1647 | ||
1648 | /* | |
5a738aea MS |
1649 | * 'cupsFileRewind()' - Set the current file position to the beginning of the |
1650 | * file. | |
1651 | * | |
f3c17241 | 1652 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1653 | */ |
1654 | ||
5a738aea | 1655 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1656 | cupsFileRewind(cups_file_t *fp) /* I - CUPS file */ |
1657 | { | |
80ca4592 | 1658 | /* |
1659 | * Range check input... | |
1660 | */ | |
1661 | ||
807315e6 | 1662 | DEBUG_printf(("cupsFileRewind(fp=%p)", (void *)fp)); |
e07d4801 | 1663 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1664 | |
80ca4592 | 1665 | if (!fp || fp->mode != 'r') |
1666 | return (-1); | |
1667 | ||
1668 | /* | |
1669 | * Handle special cases... | |
1670 | */ | |
1671 | ||
634763e8 | 1672 | if (fp->bufpos == 0) |
80ca4592 | 1673 | { |
1674 | /* | |
1675 | * No seeking necessary... | |
1676 | */ | |
1677 | ||
634763e8 MS |
1678 | fp->pos = 0; |
1679 | ||
80ca4592 | 1680 | if (fp->ptr) |
1681 | { | |
1682 | fp->ptr = fp->buf; | |
1683 | fp->eof = 0; | |
1684 | } | |
1685 | ||
e07d4801 | 1686 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1687 | |
80ca4592 | 1688 | return (0); |
1689 | } | |
1690 | ||
1691 | /* | |
1692 | * Otherwise, seek in the file and cleanup any compression buffers... | |
1693 | */ | |
1694 | ||
1695 | #ifdef HAVE_LIBZ | |
1696 | if (fp->compressed) | |
1697 | { | |
1698 | inflateEnd(&fp->stream); | |
1699 | fp->compressed = 0; | |
1700 | } | |
1701 | #endif /* HAVE_LIBZ */ | |
1702 | ||
c9fc04c6 MS |
1703 | if (lseek(fp->fd, 0, SEEK_SET)) |
1704 | { | |
e07d4801 | 1705 | DEBUG_printf(("1cupsFileRewind: lseek failed: %s", strerror(errno))); |
c9fc04c6 MS |
1706 | return (-1); |
1707 | } | |
80ca4592 | 1708 | |
634763e8 MS |
1709 | fp->bufpos = 0; |
1710 | fp->pos = 0; | |
1711 | fp->ptr = NULL; | |
1712 | fp->end = NULL; | |
1713 | fp->eof = 0; | |
1714 | ||
e07d4801 | 1715 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
80ca4592 | 1716 | |
1717 | return (0); | |
ef416fc2 | 1718 | } |
1719 | ||
1720 | ||
1721 | /* | |
1722 | * 'cupsFileSeek()' - Seek in a file. | |
5a738aea | 1723 | * |
f3c17241 | 1724 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1725 | */ |
1726 | ||
5a738aea | 1727 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1728 | cupsFileSeek(cups_file_t *fp, /* I - CUPS file */ |
1729 | off_t pos) /* I - Position in file */ | |
1730 | { | |
2abf387c | 1731 | ssize_t bytes; /* Number bytes in buffer */ |
ef416fc2 | 1732 | |
1733 | ||
807315e6 | 1734 | DEBUG_printf(("cupsFileSeek(fp=%p, pos=" CUPS_LLFMT ")", (void *)fp, CUPS_LLCAST pos)); |
e07d4801 | 1735 | DEBUG_printf(("2cupsFileSeek: fp->pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
807315e6 | 1736 | DEBUG_printf(("2cupsFileSeek: fp->ptr=%p, fp->end=%p", (void *)fp->ptr, (void *)fp->end)); |
ef416fc2 | 1737 | |
1738 | /* | |
1739 | * Range check input... | |
1740 | */ | |
1741 | ||
1742 | if (!fp || pos < 0 || fp->mode != 'r') | |
1743 | return (-1); | |
1744 | ||
80ca4592 | 1745 | /* |
1746 | * Handle special cases... | |
1747 | */ | |
1748 | ||
1749 | if (pos == 0) | |
1750 | return (cupsFileRewind(fp)); | |
1751 | ||
634763e8 | 1752 | if (fp->ptr) |
b423cd4c | 1753 | { |
634763e8 | 1754 | bytes = (ssize_t)(fp->end - fp->buf); |
b423cd4c | 1755 | |
e07d4801 | 1756 | DEBUG_printf(("2cupsFileSeek: bytes=" CUPS_LLFMT, CUPS_LLCAST bytes)); |
c168a833 | 1757 | |
634763e8 | 1758 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
b423cd4c | 1759 | { |
634763e8 MS |
1760 | /* |
1761 | * No seeking necessary... | |
1762 | */ | |
1763 | ||
1764 | fp->pos = pos; | |
1765 | fp->ptr = fp->buf + pos - fp->bufpos; | |
b423cd4c | 1766 | fp->eof = 0; |
b423cd4c | 1767 | |
634763e8 MS |
1768 | return (pos); |
1769 | } | |
b423cd4c | 1770 | } |
1771 | ||
80ca4592 | 1772 | #ifdef HAVE_LIBZ |
1773 | if (!fp->compressed && !fp->ptr) | |
1774 | { | |
1775 | /* | |
1776 | * Preload a buffer to determine whether the file is compressed... | |
1777 | */ | |
1778 | ||
cbf9404a | 1779 | if (cups_fill(fp) <= 0) |
80ca4592 | 1780 | return (-1); |
1781 | } | |
1782 | #endif /* HAVE_LIBZ */ | |
1783 | ||
ef416fc2 | 1784 | /* |
634763e8 | 1785 | * Seek forwards or backwards... |
ef416fc2 | 1786 | */ |
1787 | ||
ef416fc2 | 1788 | fp->eof = 0; |
1789 | ||
634763e8 | 1790 | if (pos < fp->bufpos) |
ef416fc2 | 1791 | { |
1792 | /* | |
1793 | * Need to seek backwards... | |
1794 | */ | |
1795 | ||
e07d4801 | 1796 | DEBUG_puts("2cupsFileSeek: SEEK BACKWARDS"); |
80ca4592 | 1797 | |
ef416fc2 | 1798 | #ifdef HAVE_LIBZ |
1799 | if (fp->compressed) | |
1800 | { | |
1801 | inflateEnd(&fp->stream); | |
1802 | ||
1803 | lseek(fp->fd, 0, SEEK_SET); | |
634763e8 MS |
1804 | fp->bufpos = 0; |
1805 | fp->pos = 0; | |
1806 | fp->ptr = NULL; | |
1807 | fp->end = NULL; | |
ef416fc2 | 1808 | |
1809 | while ((bytes = cups_fill(fp)) > 0) | |
634763e8 | 1810 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1811 | break; |
1812 | ||
1813 | if (bytes <= 0) | |
1814 | return (-1); | |
80ca4592 | 1815 | |
634763e8 MS |
1816 | fp->ptr = fp->buf + pos - fp->bufpos; |
1817 | fp->pos = pos; | |
ef416fc2 | 1818 | } |
1819 | else | |
1820 | #endif /* HAVE_LIBZ */ | |
1821 | { | |
634763e8 MS |
1822 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1823 | fp->pos = fp->bufpos; | |
1824 | fp->ptr = NULL; | |
1825 | fp->end = NULL; | |
80ca4592 | 1826 | |
e07d4801 | 1827 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1828 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1829 | } |
1830 | } | |
634763e8 | 1831 | else |
ef416fc2 | 1832 | { |
1833 | /* | |
1834 | * Need to seek forwards... | |
1835 | */ | |
1836 | ||
e07d4801 | 1837 | DEBUG_puts("2cupsFileSeek: SEEK FORWARDS"); |
80ca4592 | 1838 | |
ef416fc2 | 1839 | #ifdef HAVE_LIBZ |
80ca4592 | 1840 | if (fp->compressed) |
ef416fc2 | 1841 | { |
1842 | while ((bytes = cups_fill(fp)) > 0) | |
80ca4592 | 1843 | { |
634763e8 | 1844 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1845 | break; |
80ca4592 | 1846 | } |
ef416fc2 | 1847 | |
1848 | if (bytes <= 0) | |
1849 | return (-1); | |
80ca4592 | 1850 | |
634763e8 MS |
1851 | fp->ptr = fp->buf + pos - fp->bufpos; |
1852 | fp->pos = pos; | |
ef416fc2 | 1853 | } |
1854 | else | |
1855 | #endif /* HAVE_LIBZ */ | |
1856 | { | |
634763e8 MS |
1857 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1858 | fp->pos = fp->bufpos; | |
1859 | fp->ptr = NULL; | |
1860 | fp->end = NULL; | |
80ca4592 | 1861 | |
e07d4801 | 1862 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1863 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1864 | } |
1865 | } | |
ef416fc2 | 1866 | |
e07d4801 | 1867 | DEBUG_printf(("2cupsFileSeek: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1868 | |
1869 | return (fp->pos); | |
1870 | } | |
1871 | ||
1872 | ||
80ca4592 | 1873 | /* |
1874 | * 'cupsFileStderr()' - Return a CUPS file associated with stderr. | |
5a738aea | 1875 | * |
f3c17241 | 1876 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 1877 | */ |
1878 | ||
5a738aea | 1879 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1880 | cupsFileStderr(void) |
1881 | { | |
1882 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1883 | ||
1884 | ||
1885 | /* | |
1886 | * Open file descriptor 2 as needed... | |
1887 | */ | |
1888 | ||
1889 | if (!cg->stdio_files[2]) | |
1890 | { | |
1891 | /* | |
1892 | * Flush any pending output on the stdio file... | |
1893 | */ | |
1894 | ||
1895 | fflush(stderr); | |
1896 | ||
1897 | /* | |
1898 | * Open file descriptor 2... | |
1899 | */ | |
1900 | ||
1901 | if ((cg->stdio_files[2] = cupsFileOpenFd(2, "w")) != NULL) | |
1902 | cg->stdio_files[2]->is_stdio = 1; | |
1903 | } | |
1904 | ||
1905 | return (cg->stdio_files[2]); | |
1906 | } | |
1907 | ||
1908 | ||
1909 | /* | |
1910 | * 'cupsFileStdin()' - Return a CUPS file associated with stdin. | |
5a738aea | 1911 | * |
f3c17241 | 1912 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 1913 | */ |
1914 | ||
5a738aea | 1915 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1916 | cupsFileStdin(void) |
1917 | { | |
1918 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1919 | ||
1920 | ||
1921 | /* | |
1922 | * Open file descriptor 0 as needed... | |
1923 | */ | |
1924 | ||
1925 | if (!cg->stdio_files[0]) | |
1926 | { | |
1927 | /* | |
1928 | * Open file descriptor 0... | |
1929 | */ | |
1930 | ||
1931 | if ((cg->stdio_files[0] = cupsFileOpenFd(0, "r")) != NULL) | |
1932 | cg->stdio_files[0]->is_stdio = 1; | |
1933 | } | |
1934 | ||
1935 | return (cg->stdio_files[0]); | |
1936 | } | |
1937 | ||
1938 | ||
1939 | /* | |
1940 | * 'cupsFileStdout()' - Return a CUPS file associated with stdout. | |
5a738aea | 1941 | * |
f3c17241 | 1942 | * @since CUPS 1.2/OS X 10.5@ |
80ca4592 | 1943 | */ |
1944 | ||
5a738aea | 1945 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1946 | cupsFileStdout(void) |
1947 | { | |
1948 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1949 | ||
1950 | ||
1951 | /* | |
1952 | * Open file descriptor 1 as needed... | |
1953 | */ | |
1954 | ||
1955 | if (!cg->stdio_files[1]) | |
1956 | { | |
1957 | /* | |
1958 | * Flush any pending output on the stdio file... | |
1959 | */ | |
1960 | ||
1961 | fflush(stdout); | |
1962 | ||
1963 | /* | |
1964 | * Open file descriptor 1... | |
1965 | */ | |
1966 | ||
1967 | if ((cg->stdio_files[1] = cupsFileOpenFd(1, "w")) != NULL) | |
1968 | cg->stdio_files[1]->is_stdio = 1; | |
1969 | } | |
1970 | ||
1971 | return (cg->stdio_files[1]); | |
1972 | } | |
1973 | ||
1974 | ||
ef416fc2 | 1975 | /* |
1976 | * 'cupsFileTell()' - Return the current file position. | |
5a738aea | 1977 | * |
f3c17241 | 1978 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1979 | */ |
1980 | ||
1981 | off_t /* O - File position */ | |
1982 | cupsFileTell(cups_file_t *fp) /* I - CUPS file */ | |
1983 | { | |
807315e6 MS |
1984 | DEBUG_printf(("2cupsFileTell(fp=%p)", (void *)fp)); |
1985 | DEBUG_printf(("3cupsFileTell: pos=" CUPS_LLFMT, CUPS_LLCAST (fp ? fp->pos : -1))); | |
634763e8 | 1986 | |
80ca4592 | 1987 | return (fp ? fp->pos : 0); |
ef416fc2 | 1988 | } |
1989 | ||
1990 | ||
1991 | /* | |
1992 | * 'cupsFileUnlock()' - Unlock access to a file. | |
5a738aea | 1993 | * |
f3c17241 | 1994 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 1995 | */ |
1996 | ||
1997 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 1998 | cupsFileUnlock(cups_file_t *fp) /* I - CUPS file */ |
ef416fc2 | 1999 | { |
2000 | /* | |
2001 | * Range check... | |
2002 | */ | |
2003 | ||
807315e6 | 2004 | DEBUG_printf(("cupsFileUnlock(fp=%p)", (void *)fp)); |
634763e8 | 2005 | |
ef416fc2 | 2006 | if (!fp || fp->mode == 's') |
2007 | return (-1); | |
2008 | ||
2009 | /* | |
2010 | * Unlock... | |
2011 | */ | |
2012 | ||
2013 | #ifdef WIN32 | |
536bc2c6 | 2014 | return (_locking(fp->fd, _LK_UNLCK, 0)); |
ef416fc2 | 2015 | #else |
2016 | return (lockf(fp->fd, F_ULOCK, 0)); | |
2017 | #endif /* WIN32 */ | |
2018 | } | |
2019 | ||
2020 | ||
2021 | /* | |
2022 | * 'cupsFileWrite()' - Write to a file. | |
5a738aea | 2023 | * |
f3c17241 | 2024 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 2025 | */ |
2026 | ||
5a738aea | 2027 | ssize_t /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 2028 | cupsFileWrite(cups_file_t *fp, /* I - CUPS file */ |
2029 | const char *buf, /* I - Buffer */ | |
2030 | size_t bytes) /* I - Number of bytes to write */ | |
2031 | { | |
2032 | /* | |
2033 | * Range check input... | |
2034 | */ | |
2035 | ||
807315e6 | 2036 | DEBUG_printf(("2cupsFileWrite(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST bytes)); |
634763e8 | 2037 | |
82f97232 | 2038 | if (!fp || !buf || (fp->mode != 'w' && fp->mode != 's')) |
ef416fc2 | 2039 | return (-1); |
2040 | ||
2041 | if (bytes == 0) | |
2042 | return (0); | |
2043 | ||
2044 | /* | |
2045 | * Write the buffer... | |
2046 | */ | |
2047 | ||
2048 | if (fp->mode == 's') | |
2049 | { | |
2050 | if (cups_write(fp, buf, bytes) < 0) | |
2051 | return (-1); | |
2052 | ||
b86bc4cf | 2053 | fp->pos += (off_t)bytes; |
ef416fc2 | 2054 | |
e07d4801 | 2055 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2056 | |
b86bc4cf | 2057 | return ((ssize_t)bytes); |
ef416fc2 | 2058 | } |
2059 | ||
2060 | if ((fp->ptr + bytes) > fp->end) | |
2061 | if (cupsFileFlush(fp)) | |
2062 | return (-1); | |
2063 | ||
b86bc4cf | 2064 | fp->pos += (off_t)bytes; |
ef416fc2 | 2065 | |
e07d4801 | 2066 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2067 | |
ef416fc2 | 2068 | if (bytes > sizeof(fp->buf)) |
2069 | { | |
2070 | #ifdef HAVE_LIBZ | |
2071 | if (fp->compressed) | |
2072 | return (cups_compress(fp, buf, bytes)); | |
2073 | else | |
2074 | #endif /* HAVE_LIBZ */ | |
2075 | return (cups_write(fp, buf, bytes)); | |
2076 | } | |
2077 | else | |
2078 | { | |
2079 | memcpy(fp->ptr, buf, bytes); | |
2080 | fp->ptr += bytes; | |
b86bc4cf | 2081 | return ((ssize_t)bytes); |
ef416fc2 | 2082 | } |
2083 | } | |
2084 | ||
2085 | ||
2086 | #ifdef HAVE_LIBZ | |
2087 | /* | |
22c9029b | 2088 | * 'cups_compress()' - Compress a buffer of data. |
ef416fc2 | 2089 | */ |
2090 | ||
2091 | static ssize_t /* O - Number of bytes written or -1 */ | |
2092 | cups_compress(cups_file_t *fp, /* I - CUPS file */ | |
2093 | const char *buf, /* I - Buffer */ | |
2094 | size_t bytes) /* I - Number bytes */ | |
2095 | { | |
807315e6 | 2096 | DEBUG_printf(("7cups_compress(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST bytes)); |
ecdc0628 | 2097 | |
ef416fc2 | 2098 | /* |
2099 | * Update the CRC... | |
2100 | */ | |
2101 | ||
7e86f2f6 | 2102 | fp->crc = crc32(fp->crc, (const Bytef *)buf, (uInt)bytes); |
ef416fc2 | 2103 | |
2104 | /* | |
2105 | * Deflate the bytes... | |
2106 | */ | |
2107 | ||
2108 | fp->stream.next_in = (Bytef *)buf; | |
7e86f2f6 | 2109 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2110 | |
2111 | while (fp->stream.avail_in > 0) | |
2112 | { | |
2113 | /* | |
2114 | * Flush the current buffer... | |
2115 | */ | |
2116 | ||
e07d4801 | 2117 | DEBUG_printf(("9cups_compress: avail_in=%d, avail_out=%d", |
634763e8 | 2118 | fp->stream.avail_in, fp->stream.avail_out)); |
ecdc0628 | 2119 | |
7e86f2f6 | 2120 | if (fp->stream.avail_out < (uInt)(sizeof(fp->cbuf) / 8)) |
ef416fc2 | 2121 | { |
7e86f2f6 | 2122 | if (cups_write(fp, (char *)fp->cbuf, (size_t)(fp->stream.next_out - fp->cbuf)) < 0) |
ef416fc2 | 2123 | return (-1); |
ecdc0628 | 2124 | |
2125 | fp->stream.next_out = fp->cbuf; | |
2126 | fp->stream.avail_out = sizeof(fp->cbuf); | |
ef416fc2 | 2127 | } |
2128 | ||
2129 | deflate(&(fp->stream), Z_NO_FLUSH); | |
2130 | } | |
2131 | ||
7e86f2f6 | 2132 | return ((ssize_t)bytes); |
ef416fc2 | 2133 | } |
2134 | #endif /* HAVE_LIBZ */ | |
2135 | ||
2136 | ||
2137 | /* | |
22c9029b | 2138 | * 'cups_fill()' - Fill the input buffer. |
ef416fc2 | 2139 | */ |
2140 | ||
2141 | static ssize_t /* O - Number of bytes or -1 */ | |
2142 | cups_fill(cups_file_t *fp) /* I - CUPS file */ | |
2143 | { | |
2144 | ssize_t bytes; /* Number of bytes read */ | |
2145 | #ifdef HAVE_LIBZ | |
c277e2f8 | 2146 | int status; /* Decompression status */ |
ef416fc2 | 2147 | const unsigned char *ptr, /* Pointer into buffer */ |
2148 | *end; /* End of buffer */ | |
2149 | #endif /* HAVE_LIBZ */ | |
2150 | ||
2151 | ||
807315e6 MS |
2152 | DEBUG_printf(("7cups_fill(fp=%p)", (void *)fp)); |
2153 | DEBUG_printf(("9cups_fill: fp->ptr=%p, fp->end=%p, fp->buf=%p, fp->bufpos=" CUPS_LLFMT ", fp->eof=%d", (void *)fp->ptr, (void *)fp->end, (void *)fp->buf, CUPS_LLCAST fp->bufpos, fp->eof)); | |
ef416fc2 | 2154 | |
2155 | if (fp->ptr && fp->end) | |
c9fc04c6 | 2156 | fp->bufpos += fp->end - fp->buf; |
ef416fc2 | 2157 | |
2158 | #ifdef HAVE_LIBZ | |
e07d4801 | 2159 | DEBUG_printf(("9cups_fill: fp->compressed=%d", fp->compressed)); |
b423cd4c | 2160 | |
ef416fc2 | 2161 | while (!fp->ptr || fp->compressed) |
2162 | { | |
2163 | /* | |
2164 | * Check to see if we have read any data yet; if not, see if we have a | |
2165 | * compressed file... | |
2166 | */ | |
2167 | ||
2168 | if (!fp->ptr) | |
2169 | { | |
2170 | /* | |
2171 | * Reset the file position in case we are seeking... | |
2172 | */ | |
2173 | ||
2174 | fp->compressed = 0; | |
ef416fc2 | 2175 | |
2176 | /* | |
2177 | * Read the first bytes in the file to determine if we have a gzip'd | |
2178 | * file... | |
2179 | */ | |
2180 | ||
fa73b229 | 2181 | if ((bytes = cups_read(fp, (char *)fp->buf, sizeof(fp->buf))) < 0) |
ef416fc2 | 2182 | { |
2183 | /* | |
2184 | * Can't read from file! | |
2185 | */ | |
2186 | ||
e07d4801 | 2187 | DEBUG_printf(("9cups_fill: cups_read() returned " CUPS_LLFMT, |
b423cd4c | 2188 | CUPS_LLCAST bytes)); |
2189 | ||
cbf9404a MS |
2190 | fp->eof = 1; |
2191 | ||
ef416fc2 | 2192 | return (-1); |
2193 | } | |
2194 | ||
fa73b229 | 2195 | if (bytes < 10 || fp->buf[0] != 0x1f || |
e00b005a | 2196 | (fp->buf[1] & 255) != 0x8b || |
fa73b229 | 2197 | fp->buf[2] != 8 || (fp->buf[3] & 0xe0) != 0) |
ef416fc2 | 2198 | { |
2199 | /* | |
2200 | * Not a gzip'd file! | |
2201 | */ | |
2202 | ||
ef416fc2 | 2203 | fp->ptr = fp->buf; |
2204 | fp->end = fp->buf + bytes; | |
2205 | ||
e07d4801 | 2206 | DEBUG_printf(("9cups_fill: Returning " CUPS_LLFMT, |
c9fc04c6 | 2207 | CUPS_LLCAST bytes)); |
b423cd4c | 2208 | |
ef416fc2 | 2209 | return (bytes); |
2210 | } | |
2211 | ||
2212 | /* | |
2213 | * Parse header junk: extra data, original name, and comment... | |
2214 | */ | |
2215 | ||
fa73b229 | 2216 | ptr = (unsigned char *)fp->buf + 10; |
2217 | end = (unsigned char *)fp->buf + bytes; | |
ef416fc2 | 2218 | |
fa73b229 | 2219 | if (fp->buf[3] & 0x04) |
ef416fc2 | 2220 | { |
2221 | /* | |
2222 | * Skip extra data... | |
2223 | */ | |
2224 | ||
2225 | if ((ptr + 2) > end) | |
2226 | { | |
2227 | /* | |
2228 | * Can't read from file! | |
2229 | */ | |
2230 | ||
cbf9404a MS |
2231 | DEBUG_puts("9cups_fill: Extra gzip header data missing, returning -1."); |
2232 | ||
2233 | fp->eof = 1; | |
2234 | errno = EIO; | |
2235 | ||
ef416fc2 | 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 | ||
cbf9404a MS |
2248 | DEBUG_puts("9cups_fill: Extra gzip header data does not fit in initial buffer, returning -1."); |
2249 | ||
2250 | fp->eof = 1; | |
2251 | errno = EIO; | |
2252 | ||
ef416fc2 | 2253 | return (-1); |
2254 | } | |
2255 | } | |
2256 | ||
fa73b229 | 2257 | if (fp->buf[3] & 0x08) |
ef416fc2 | 2258 | { |
2259 | /* | |
2260 | * Skip original name data... | |
2261 | */ | |
2262 | ||
2263 | while (ptr < end && *ptr) | |
2264 | ptr ++; | |
2265 | ||
2266 | if (ptr < end) | |
2267 | ptr ++; | |
2268 | else | |
2269 | { | |
2270 | /* | |
2271 | * Can't read from file! | |
2272 | */ | |
2273 | ||
cbf9404a MS |
2274 | DEBUG_puts("9cups_fill: Original filename in gzip header data does not fit in initial buffer, returning -1."); |
2275 | ||
2276 | fp->eof = 1; | |
2277 | errno = EIO; | |
2278 | ||
ef416fc2 | 2279 | return (-1); |
2280 | } | |
2281 | } | |
2282 | ||
fa73b229 | 2283 | if (fp->buf[3] & 0x10) |
ef416fc2 | 2284 | { |
2285 | /* | |
2286 | * Skip comment data... | |
2287 | */ | |
2288 | ||
2289 | while (ptr < end && *ptr) | |
2290 | ptr ++; | |
2291 | ||
2292 | if (ptr < end) | |
2293 | ptr ++; | |
2294 | else | |
2295 | { | |
2296 | /* | |
2297 | * Can't read from file! | |
2298 | */ | |
2299 | ||
cbf9404a MS |
2300 | DEBUG_puts("9cups_fill: Comment in gzip header data does not fit in initial buffer, returning -1."); |
2301 | ||
2302 | fp->eof = 1; | |
2303 | errno = EIO; | |
2304 | ||
ef416fc2 | 2305 | return (-1); |
2306 | } | |
2307 | } | |
2308 | ||
fa73b229 | 2309 | if (fp->buf[3] & 0x02) |
ef416fc2 | 2310 | { |
2311 | /* | |
2312 | * Skip header CRC data... | |
2313 | */ | |
2314 | ||
2315 | ptr += 2; | |
2316 | ||
2317 | if (ptr > end) | |
2318 | { | |
2319 | /* | |
2320 | * Can't read from file! | |
2321 | */ | |
2322 | ||
cbf9404a MS |
2323 | DEBUG_puts("9cups_fill: Header CRC in gzip header data does not fit in initial buffer, returning -1."); |
2324 | ||
2325 | fp->eof = 1; | |
2326 | errno = EIO; | |
2327 | ||
ef416fc2 | 2328 | return (-1); |
2329 | } | |
2330 | } | |
2331 | ||
fa73b229 | 2332 | /* |
2333 | * Copy the flate-compressed data to the compression buffer... | |
2334 | */ | |
2335 | ||
2336 | if ((bytes = end - ptr) > 0) | |
07623986 | 2337 | memcpy(fp->cbuf, ptr, (size_t)bytes); |
fa73b229 | 2338 | |
ef416fc2 | 2339 | /* |
2340 | * Setup the decompressor data... | |
2341 | */ | |
2342 | ||
2343 | fp->stream.zalloc = (alloc_func)0; | |
2344 | fp->stream.zfree = (free_func)0; | |
2345 | fp->stream.opaque = (voidpf)0; | |
fa73b229 | 2346 | fp->stream.next_in = (Bytef *)fp->cbuf; |
ef416fc2 | 2347 | fp->stream.next_out = NULL; |
7e86f2f6 | 2348 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2349 | fp->stream.avail_out = 0; |
2350 | fp->crc = crc32(0L, Z_NULL, 0); | |
2351 | ||
cbf9404a MS |
2352 | if ((status = inflateInit2(&(fp->stream), -15)) != Z_OK) |
2353 | { | |
2354 | DEBUG_printf(("9cups_fill: inflateInit2 returned %d, returning -1.", status)); | |
2355 | ||
2356 | fp->eof = 1; | |
2357 | errno = EIO; | |
2358 | ||
ef416fc2 | 2359 | return (-1); |
cbf9404a | 2360 | } |
ef416fc2 | 2361 | |
2362 | fp->compressed = 1; | |
2363 | } | |
2364 | ||
2365 | if (fp->compressed) | |
2366 | { | |
2367 | /* | |
2368 | * If we have reached end-of-file, return immediately... | |
2369 | */ | |
2370 | ||
2371 | if (fp->eof) | |
cbf9404a MS |
2372 | { |
2373 | DEBUG_puts("9cups_fill: EOF, returning 0."); | |
2374 | ||
2375 | return (0); | |
2376 | } | |
ef416fc2 | 2377 | |
2378 | /* | |
2379 | * Fill the decompression buffer as needed... | |
2380 | */ | |
2381 | ||
2382 | if (fp->stream.avail_in == 0) | |
2383 | { | |
2384 | if ((bytes = cups_read(fp, (char *)fp->cbuf, sizeof(fp->cbuf))) <= 0) | |
cbf9404a MS |
2385 | { |
2386 | DEBUG_printf(("9cups_fill: cups_read error, returning %d.", (int)bytes)); | |
2387 | ||
2388 | fp->eof = 1; | |
2389 | ||
2390 | return (bytes); | |
2391 | } | |
ef416fc2 | 2392 | |
2393 | fp->stream.next_in = fp->cbuf; | |
7e86f2f6 | 2394 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2395 | } |
2396 | ||
2397 | /* | |
2398 | * Decompress data from the buffer... | |
2399 | */ | |
2400 | ||
2401 | fp->stream.next_out = (Bytef *)fp->buf; | |
2402 | fp->stream.avail_out = sizeof(fp->buf); | |
2403 | ||
c277e2f8 MS |
2404 | status = inflate(&(fp->stream), Z_NO_FLUSH); |
2405 | ||
2406 | if (fp->stream.next_out > (Bytef *)fp->buf) | |
2407 | fp->crc = crc32(fp->crc, (Bytef *)fp->buf, | |
7e86f2f6 | 2408 | (uInt)(fp->stream.next_out - (Bytef *)fp->buf)); |
c277e2f8 MS |
2409 | |
2410 | if (status == Z_STREAM_END) | |
ef416fc2 | 2411 | { |
2412 | /* | |
2413 | * Read the CRC and length... | |
2414 | */ | |
2415 | ||
2416 | unsigned char trailer[8]; /* Trailer bytes */ | |
2417 | uLong tcrc; /* Trailer CRC */ | |
cbf9404a | 2418 | ssize_t tbytes = 0; /* Number of bytes */ |
ef416fc2 | 2419 | |
cbf9404a | 2420 | if (fp->stream.avail_in > 0) |
ef416fc2 | 2421 | { |
cbf9404a MS |
2422 | if (fp->stream.avail_in > sizeof(trailer)) |
2423 | tbytes = (ssize_t)sizeof(trailer); | |
2424 | else | |
2425 | tbytes = (ssize_t)fp->stream.avail_in; | |
ef416fc2 | 2426 | |
b2250eaa | 2427 | memcpy(trailer, fp->stream.next_in, (size_t)tbytes); |
cbf9404a MS |
2428 | fp->stream.next_in += tbytes; |
2429 | fp->stream.avail_in -= (size_t)tbytes; | |
ef416fc2 | 2430 | } |
2431 | ||
cbf9404a MS |
2432 | if (tbytes < (ssize_t)sizeof(trailer)) |
2433 | { | |
2434 | if (read(fp->fd, trailer + tbytes, sizeof(trailer) - (size_t)tbytes) < ((ssize_t)sizeof(trailer) - tbytes)) | |
fa73b229 | 2435 | { |
2436 | /* | |
cbf9404a | 2437 | * Can't get it, so mark end-of-file... |
fa73b229 | 2438 | */ |
2439 | ||
cbf9404a | 2440 | DEBUG_puts("9cups_fill: Unable to read gzip CRC trailer, returning -1."); |
c277e2f8 | 2441 | |
fa73b229 | 2442 | fp->eof = 1; |
cbf9404a | 2443 | errno = EIO; |
fa73b229 | 2444 | |
2445 | return (-1); | |
2446 | } | |
cbf9404a MS |
2447 | } |
2448 | ||
2449 | tcrc = ((((((uLong)trailer[3] << 8) | (uLong)trailer[2]) << 8) | | |
2450 | (uLong)trailer[1]) << 8) | (uLong)trailer[0]; | |
ef416fc2 | 2451 | |
cbf9404a MS |
2452 | if (tcrc != fp->crc) |
2453 | { | |
ef416fc2 | 2454 | /* |
cbf9404a | 2455 | * Bad CRC, mark end-of-file... |
ef416fc2 | 2456 | */ |
ef416fc2 | 2457 | |
cbf9404a MS |
2458 | DEBUG_printf(("9cups_fill: tcrc=%08x != fp->crc=%08x, returning -1.", (unsigned int)tcrc, (unsigned int)fp->crc)); |
2459 | ||
2460 | fp->eof = 1; | |
2461 | errno = EIO; | |
2462 | ||
2463 | return (-1); | |
ef416fc2 | 2464 | } |
cbf9404a MS |
2465 | |
2466 | /* | |
2467 | * Otherwise, reset the compressed flag so that we re-read the | |
2468 | * file header... | |
2469 | */ | |
2470 | ||
2471 | fp->compressed = 0; | |
2472 | } | |
2473 | else if (status < Z_OK) | |
2474 | { | |
2475 | DEBUG_printf(("9cups_fill: inflate returned %d, returning -1.", status)); | |
2476 | ||
2477 | fp->eof = 1; | |
2478 | errno = EIO; | |
2479 | ||
2480 | return (-1); | |
ef416fc2 | 2481 | } |
2482 | ||
7e86f2f6 | 2483 | bytes = (ssize_t)sizeof(fp->buf) - (ssize_t)fp->stream.avail_out; |
ef416fc2 | 2484 | |
2485 | /* | |
2486 | * Return the decompressed data... | |
2487 | */ | |
2488 | ||
2489 | fp->ptr = fp->buf; | |
2490 | fp->end = fp->buf + bytes; | |
2491 | ||
fa73b229 | 2492 | if (bytes) |
cbf9404a MS |
2493 | { |
2494 | DEBUG_printf(("9cups_fill: Returning %d.", (int)bytes)); | |
fa73b229 | 2495 | return (bytes); |
cbf9404a | 2496 | } |
ef416fc2 | 2497 | } |
2498 | } | |
2499 | #endif /* HAVE_LIBZ */ | |
2500 | ||
2501 | /* | |
2502 | * Read a buffer's full of data... | |
2503 | */ | |
2504 | ||
2505 | if ((bytes = cups_read(fp, fp->buf, sizeof(fp->buf))) <= 0) | |
2506 | { | |
2507 | /* | |
2508 | * Can't read from file! | |
2509 | */ | |
2510 | ||
2511 | fp->eof = 1; | |
2512 | fp->ptr = fp->buf; | |
2513 | fp->end = fp->buf; | |
ef416fc2 | 2514 | } |
cbf9404a MS |
2515 | else |
2516 | { | |
2517 | /* | |
2518 | * Return the bytes we read... | |
2519 | */ | |
ef416fc2 | 2520 | |
cbf9404a MS |
2521 | fp->eof = 0; |
2522 | fp->ptr = fp->buf; | |
2523 | fp->end = fp->buf + bytes; | |
2524 | } | |
ef416fc2 | 2525 | |
cbf9404a | 2526 | DEBUG_printf(("9cups_fill: Not gzip, returning %d.", (int)bytes)); |
ef416fc2 | 2527 | |
2528 | return (bytes); | |
2529 | } | |
2530 | ||
2531 | ||
c7017ecc MS |
2532 | /* |
2533 | * 'cups_open()' - Safely open a file for writing. | |
2534 | * | |
2535 | * We don't allow appending to directories or files that are hard-linked or | |
2536 | * symlinked. | |
2537 | */ | |
2538 | ||
2539 | static int /* O - File descriptor or -1 otherwise */ | |
2540 | cups_open(const char *filename, /* I - Filename */ | |
2541 | int mode) /* I - Open mode */ | |
2542 | { | |
2543 | int fd; /* File descriptor */ | |
2544 | struct stat fileinfo; /* File information */ | |
2545 | #ifndef WIN32 | |
2546 | struct stat linkinfo; /* Link information */ | |
2547 | #endif /* !WIN32 */ | |
2548 | ||
2549 | ||
2550 | /* | |
2551 | * Open the file... | |
2552 | */ | |
2553 | ||
2554 | if ((fd = open(filename, mode, 0666)) < 0) | |
2555 | return (-1); | |
2556 | ||
2557 | /* | |
2558 | * Then verify that the file descriptor doesn't point to a directory or hard- | |
2559 | * linked file. | |
2560 | */ | |
2561 | ||
2562 | if (fstat(fd, &fileinfo)) | |
2563 | { | |
2564 | close(fd); | |
2565 | return (-1); | |
2566 | } | |
2567 | ||
2568 | if (fileinfo.st_nlink != 1) | |
2569 | { | |
2570 | close(fd); | |
2571 | errno = EPERM; | |
2572 | return (-1); | |
2573 | } | |
2574 | ||
2575 | #ifdef WIN32 | |
2576 | if (fileinfo.st_mode & _S_IFDIR) | |
2577 | #else | |
2578 | if (S_ISDIR(fileinfo.st_mode)) | |
2579 | #endif /* WIN32 */ | |
2580 | { | |
2581 | close(fd); | |
2582 | errno = EISDIR; | |
2583 | return (-1); | |
2584 | } | |
2585 | ||
2586 | #ifndef WIN32 | |
2587 | /* | |
2588 | * Then use lstat to determine whether the filename is a symlink... | |
2589 | */ | |
2590 | ||
2591 | if (lstat(filename, &linkinfo)) | |
2592 | { | |
2593 | close(fd); | |
2594 | return (-1); | |
2595 | } | |
2596 | ||
2597 | if (S_ISLNK(linkinfo.st_mode) || | |
2598 | fileinfo.st_dev != linkinfo.st_dev || | |
2599 | fileinfo.st_ino != linkinfo.st_ino || | |
2600 | #ifdef HAVE_ST_GEN | |
2601 | fileinfo.st_gen != linkinfo.st_gen || | |
2602 | #endif /* HAVE_ST_GEN */ | |
2603 | fileinfo.st_nlink != linkinfo.st_nlink || | |
2604 | fileinfo.st_mode != linkinfo.st_mode) | |
2605 | { | |
2606 | /* | |
2607 | * Yes, don't allow! | |
2608 | */ | |
2609 | ||
2610 | close(fd); | |
2611 | errno = EPERM; | |
2612 | return (-1); | |
2613 | } | |
2614 | #endif /* !WIN32 */ | |
2615 | ||
2616 | return (fd); | |
2617 | } | |
2618 | ||
2619 | ||
ef416fc2 | 2620 | /* |
2621 | * 'cups_read()' - Read from a file descriptor. | |
2622 | */ | |
2623 | ||
2624 | static ssize_t /* O - Number of bytes read or -1 */ | |
2625 | cups_read(cups_file_t *fp, /* I - CUPS file */ | |
2626 | char *buf, /* I - Buffer */ | |
2627 | size_t bytes) /* I - Number bytes */ | |
2628 | { | |
2629 | ssize_t total; /* Total bytes read */ | |
2630 | ||
2631 | ||
807315e6 | 2632 | DEBUG_printf(("7cups_read(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST bytes)); |
634763e8 | 2633 | |
ef416fc2 | 2634 | /* |
2635 | * Loop until we read at least 0 bytes... | |
2636 | */ | |
2637 | ||
2638 | for (;;) | |
2639 | { | |
b86bc4cf | 2640 | #ifdef WIN32 |
2641 | if (fp->mode == 's') | |
2642 | total = (ssize_t)recv(fp->fd, buf, (unsigned)bytes, 0); | |
2643 | else | |
2644 | total = (ssize_t)read(fp->fd, buf, (unsigned)bytes); | |
2645 | #else | |
ef416fc2 | 2646 | if (fp->mode == 's') |
2647 | total = recv(fp->fd, buf, bytes, 0); | |
2648 | else | |
2649 | total = read(fp->fd, buf, bytes); | |
b86bc4cf | 2650 | #endif /* WIN32 */ |
ef416fc2 | 2651 | |
e07d4801 | 2652 | DEBUG_printf(("9cups_read: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
634763e8 | 2653 | |
ef416fc2 | 2654 | if (total >= 0) |
2655 | break; | |
2656 | ||
2657 | /* | |
2658 | * Reads can be interrupted by signals and unavailable resources... | |
2659 | */ | |
2660 | ||
2661 | if (errno == EAGAIN || errno == EINTR) | |
2662 | continue; | |
2663 | else | |
2664 | return (-1); | |
2665 | } | |
2666 | ||
2667 | /* | |
2668 | * Return the total number of bytes read... | |
2669 | */ | |
2670 | ||
2671 | return (total); | |
2672 | } | |
2673 | ||
2674 | ||
2675 | /* | |
2676 | * 'cups_write()' - Write to a file descriptor. | |
2677 | */ | |
2678 | ||
2679 | static ssize_t /* O - Number of bytes written or -1 */ | |
2680 | cups_write(cups_file_t *fp, /* I - CUPS file */ | |
2681 | const char *buf, /* I - Buffer */ | |
2682 | size_t bytes) /* I - Number bytes */ | |
2683 | { | |
2abf387c | 2684 | size_t total; /* Total bytes written */ |
2685 | ssize_t count; /* Count this time */ | |
ef416fc2 | 2686 | |
2687 | ||
807315e6 | 2688 | DEBUG_printf(("7cups_write(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST bytes)); |
ecdc0628 | 2689 | |
ef416fc2 | 2690 | /* |
2691 | * Loop until all bytes are written... | |
2692 | */ | |
2693 | ||
2694 | total = 0; | |
2695 | while (bytes > 0) | |
2696 | { | |
b86bc4cf | 2697 | #ifdef WIN32 |
2698 | if (fp->mode == 's') | |
2699 | count = (ssize_t)send(fp->fd, buf, (unsigned)bytes, 0); | |
2700 | else | |
2701 | count = (ssize_t)write(fp->fd, buf, (unsigned)bytes); | |
2702 | #else | |
ef416fc2 | 2703 | if (fp->mode == 's') |
2704 | count = send(fp->fd, buf, bytes, 0); | |
2705 | else | |
2706 | count = write(fp->fd, buf, bytes); | |
b86bc4cf | 2707 | #endif /* WIN32 */ |
ef416fc2 | 2708 | |
e07d4801 | 2709 | DEBUG_printf(("9cups_write: count=" CUPS_LLFMT, CUPS_LLCAST count)); |
634763e8 | 2710 | |
ef416fc2 | 2711 | if (count < 0) |
2712 | { | |
2713 | /* | |
2714 | * Writes can be interrupted by signals and unavailable resources... | |
2715 | */ | |
2716 | ||
2717 | if (errno == EAGAIN || errno == EINTR) | |
2718 | continue; | |
2719 | else | |
2720 | return (-1); | |
2721 | } | |
2722 | ||
2723 | /* | |
2724 | * Update the counts for the last write call... | |
2725 | */ | |
2726 | ||
7e86f2f6 MS |
2727 | bytes -= (size_t)count; |
2728 | total += (size_t)count; | |
ef416fc2 | 2729 | buf += count; |
2730 | } | |
2731 | ||
2732 | /* | |
2733 | * Return the total number of bytes written... | |
2734 | */ | |
2735 | ||
b86bc4cf | 2736 | return ((ssize_t)total); |
ef416fc2 | 2737 | } |
2738 | ||
2739 | ||
2740 | /* | |
f2d18633 | 2741 | * End of "$Id$". |
ef416fc2 | 2742 | */ |