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ef416fc2 | 1 | /* |
75bd9771 | 2 | * "$Id: file.c 7672 2008-06-18 22:03:02Z mike $" |
ef416fc2 | 3 | * |
71e16022 | 4 | * File functions for CUPS. |
ef416fc2 | 5 | * |
6 | * Since stdio files max out at 256 files on many systems, we have to | |
7 | * write similar functions without this limit. At the same time, using | |
8 | * our own file functions allows us to provide transparent support of | |
9 | * gzip'd print files, PPD files, etc. | |
10 | * | |
22c9029b | 11 | * Copyright 2007-2011 by Apple Inc. |
b86bc4cf | 12 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
ef416fc2 | 13 | * |
14 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 15 | * property of Apple Inc. and are protected by Federal copyright |
16 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
17 | * which should have been included with this file. If this file is | |
18 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
ef416fc2 | 19 | * |
20 | * Contents: | |
21 | * | |
22c9029b MS |
22 | * _cupsFileCheck() - Check the permissions of the given filename. |
23 | * _cupsFileCheckFilter() - Report file check results as CUPS filter messages. | |
24 | * cupsFileClose() - Close a CUPS file. | |
25 | * cupsFileCompression() - Return whether a file is compressed. | |
26 | * cupsFileEOF() - Return the end-of-file status. | |
27 | * cupsFileFind() - Find a file using the specified path. | |
28 | * cupsFileFlush() - Flush pending output. | |
29 | * cupsFileGetChar() - Get a single character from a file. | |
30 | * cupsFileGetConf() - Get a line from a configuration file. | |
31 | * cupsFileGetLine() - Get a CR and/or LF-terminated line that may | |
32 | * contain binary data. | |
33 | * cupsFileGets() - Get a CR and/or LF-terminated line. | |
34 | * cupsFileLock() - Temporarily lock access to a file. | |
35 | * cupsFileNumber() - Return the file descriptor associated with a CUPS | |
36 | * file. | |
37 | * cupsFileOpen() - Open a CUPS file. | |
38 | * cupsFileOpenFd() - Open a CUPS file using a file descriptor. | |
39 | * cupsFilePeekChar() - Peek at the next character from a file. | |
40 | * cupsFilePrintf() - Write a formatted string. | |
41 | * cupsFilePutChar() - Write a character. | |
42 | * cupsFilePuts() - Write a string. | |
43 | * cupsFileRead() - Read from a file. | |
44 | * cupsFileRewind() - Set the current file position to the beginning of | |
45 | * the file. | |
46 | * cupsFileSeek() - Seek in a file. | |
47 | * cupsFileStderr() - Return a CUPS file associated with stderr. | |
48 | * cupsFileStdin() - Return a CUPS file associated with stdin. | |
49 | * cupsFileStdout() - Return a CUPS file associated with stdout. | |
50 | * cupsFileTell() - Return the current file position. | |
51 | * cupsFileUnlock() - Unlock access to a file. | |
52 | * cupsFileWrite() - Write to a file. | |
53 | * cups_compress() - Compress a buffer of data. | |
54 | * cups_fill() - Fill the input buffer. | |
55 | * cups_read() - Read from a file descriptor. | |
56 | * cups_write() - Write to a file descriptor. | |
ef416fc2 | 57 | */ |
58 | ||
59 | /* | |
60 | * Include necessary headers... | |
61 | */ | |
62 | ||
b9faaae1 | 63 | #include "file-private.h" |
c7017ecc MS |
64 | #include <sys/stat.h> |
65 | #include <sys/types.h> | |
ef416fc2 | 66 | |
67 | ||
68 | /* | |
69 | * Local functions... | |
70 | */ | |
71 | ||
72 | #ifdef HAVE_LIBZ | |
73 | static ssize_t cups_compress(cups_file_t *fp, const char *buf, size_t bytes); | |
74 | #endif /* HAVE_LIBZ */ | |
75 | static ssize_t cups_fill(cups_file_t *fp); | |
c7017ecc | 76 | static int cups_open(const char *filename, int mode); |
ef416fc2 | 77 | static ssize_t cups_read(cups_file_t *fp, char *buf, size_t bytes); |
78 | static ssize_t cups_write(cups_file_t *fp, const char *buf, size_t bytes); | |
79 | ||
80 | ||
22c9029b MS |
81 | /* |
82 | * '_cupsFileCheck()' - Check the permissions of the given filename. | |
83 | */ | |
84 | ||
85 | _cups_fc_result_t /* O - Check result */ | |
86 | _cupsFileCheck( | |
87 | const char *filename, /* I - Filename to check */ | |
88 | _cups_fc_filetype_t filetype, /* I - Type of file checks? */ | |
89 | int dorootchecks, /* I - Check for root permissions? */ | |
90 | _cups_fc_func_t cb, /* I - Callback function */ | |
91 | void *context) /* I - Context pointer for callback */ | |
92 | ||
93 | { | |
94 | struct stat fileinfo; /* File information */ | |
95 | char message[1024], /* Message string */ | |
96 | temp[1024], /* Parent directory filename */ | |
97 | *ptr; /* Pointer into parent directory */ | |
98 | _cups_fc_result_t result; /* Check result */ | |
99 | ||
100 | ||
101 | /* | |
102 | * Does the program even exist and is it accessible? | |
103 | */ | |
104 | ||
105 | if (stat(filename, &fileinfo)) | |
106 | { | |
107 | /* | |
108 | * Nope... | |
109 | */ | |
110 | ||
111 | result = _CUPS_FILE_CHECK_MISSING; | |
112 | goto finishup; | |
113 | } | |
114 | ||
115 | /* | |
116 | * Check the execute bit... | |
117 | */ | |
118 | ||
119 | result = _CUPS_FILE_CHECK_OK; | |
120 | ||
121 | switch (filetype) | |
122 | { | |
123 | case _CUPS_FILE_CHECK_DIRECTORY : | |
124 | if (!S_ISDIR(fileinfo.st_mode)) | |
125 | result = _CUPS_FILE_CHECK_WRONG_TYPE; | |
126 | break; | |
127 | ||
128 | default : | |
129 | if (!S_ISREG(fileinfo.st_mode)) | |
130 | result = _CUPS_FILE_CHECK_WRONG_TYPE; | |
131 | break; | |
132 | } | |
133 | ||
134 | if (result) | |
135 | goto finishup; | |
136 | ||
137 | /* | |
138 | * Are we doing root checks? | |
139 | */ | |
140 | ||
141 | if (!dorootchecks) | |
142 | { | |
143 | /* | |
144 | * Nope, so anything (else) goes... | |
145 | */ | |
146 | ||
147 | goto finishup; | |
148 | } | |
149 | ||
150 | /* | |
151 | * Verify permission of the file itself: | |
152 | * | |
153 | * 1. Must be owned by root | |
154 | * 2. Must not be writable by group unless group is root/wheel/admin | |
155 | * 3. Must not be setuid | |
156 | * 4. Must not be writable by others | |
157 | */ | |
158 | ||
159 | if (fileinfo.st_uid || /* 1. Must be owned by root */ | |
160 | #ifdef __APPLE__ | |
161 | ((fileinfo.st_mode & S_IWGRP) && fileinfo.st_gid && | |
162 | fileinfo.st_gid != 80) || /* 2. Must not be writable by group */ | |
163 | #else | |
164 | ((fileinfo.st_mode & S_IWGRP) && fileinfo.st_gid) || | |
165 | /* 2. Must not be writable by group */ | |
166 | #endif /* __APPLE__ */ | |
167 | (fileinfo.st_mode & S_ISUID) || /* 3. Must not be setuid */ | |
168 | (fileinfo.st_mode & S_IWOTH)) /* 4. Must not be writable by others */ | |
169 | { | |
170 | result = _CUPS_FILE_CHECK_PERMISSIONS; | |
171 | goto finishup; | |
172 | } | |
173 | ||
174 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY || | |
175 | filetype == _CUPS_FILE_CHECK_FILE_ONLY) | |
176 | goto finishup; | |
177 | ||
178 | /* | |
179 | * Now check the containing directory... | |
180 | */ | |
181 | ||
182 | strlcpy(temp, filename, sizeof(temp)); | |
183 | if ((ptr = strrchr(temp, '/')) != NULL) | |
184 | { | |
185 | if (ptr == temp) | |
186 | ptr[1] = '\0'; | |
187 | else | |
188 | *ptr = '\0'; | |
189 | } | |
190 | ||
191 | if (stat(temp, &fileinfo)) | |
192 | { | |
193 | /* | |
194 | * Doesn't exist?!? | |
195 | */ | |
196 | ||
197 | result = _CUPS_FILE_CHECK_MISSING; | |
198 | filetype = _CUPS_FILE_CHECK_DIRECTORY; | |
199 | filename = temp; | |
200 | ||
201 | goto finishup; | |
202 | } | |
203 | ||
204 | if (fileinfo.st_uid || /* 1. Must be owned by root */ | |
205 | #ifdef __APPLE__ | |
206 | ((fileinfo.st_mode & S_IWGRP) && fileinfo.st_gid && | |
207 | fileinfo.st_gid != 80) || /* 2. Must not be writable by group */ | |
208 | #else | |
209 | ((fileinfo.st_mode & S_IWGRP) && fileinfo.st_gid) || | |
210 | /* 2. Must not be writable by group */ | |
211 | #endif /* __APPLE__ */ | |
212 | (fileinfo.st_mode & S_ISUID) || /* 3. Must not be setuid */ | |
213 | (fileinfo.st_mode & S_IWOTH)) /* 4. Must not be writable by others */ | |
214 | { | |
215 | result = _CUPS_FILE_CHECK_PERMISSIONS; | |
216 | filetype = _CUPS_FILE_CHECK_DIRECTORY; | |
217 | filename = temp; | |
218 | } | |
219 | ||
220 | /* | |
221 | * Common return point... | |
222 | */ | |
223 | ||
224 | finishup: | |
225 | ||
226 | if (cb) | |
227 | { | |
228 | cups_lang_t *lang = cupsLangDefault(); | |
229 | /* Localization information */ | |
230 | ||
231 | switch (result) | |
232 | { | |
233 | case _CUPS_FILE_CHECK_OK : | |
234 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
235 | snprintf(message, sizeof(message), | |
236 | _cupsLangString(lang, _("Directory \"%s\" permissions OK " | |
237 | "(0%o/uid=%d/gid=%d).")), | |
238 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
239 | (int)fileinfo.st_gid); | |
240 | else | |
241 | snprintf(message, sizeof(message), | |
242 | _cupsLangString(lang, _("File \"%s\" permissions OK " | |
243 | "(0%o/uid=%d/gid=%d).")), | |
244 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
245 | (int)fileinfo.st_gid); | |
246 | break; | |
247 | ||
248 | case _CUPS_FILE_CHECK_MISSING : | |
249 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
250 | snprintf(message, sizeof(message), | |
251 | _cupsLangString(lang, _("Directory \"%s\" not available: " | |
252 | "%s")), | |
253 | filename, strerror(errno)); | |
254 | else | |
255 | snprintf(message, sizeof(message), | |
256 | _cupsLangString(lang, _("File \"%s\" not available: %s")), | |
257 | filename, strerror(errno)); | |
258 | break; | |
259 | ||
260 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
261 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
262 | snprintf(message, sizeof(message), | |
263 | _cupsLangString(lang, _("Directory \"%s\" has insecure " | |
264 | "permissions " | |
265 | "(0%o/uid=%d/gid=%d).")), | |
266 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
267 | (int)fileinfo.st_gid); | |
268 | else | |
269 | snprintf(message, sizeof(message), | |
270 | _cupsLangString(lang, _("File \"%s\" has insecure " | |
271 | "permissions " | |
272 | "(0%o/uid=%d/gid=%d).")), | |
273 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
274 | (int)fileinfo.st_gid); | |
275 | break; | |
276 | ||
277 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
278 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
279 | snprintf(message, sizeof(message), | |
280 | _cupsLangString(lang, _("Directory \"%s\" is a file.")), | |
281 | filename); | |
282 | else | |
283 | snprintf(message, sizeof(message), | |
284 | _cupsLangString(lang, _("File \"%s\" is a directory.")), | |
285 | filename); | |
286 | break; | |
287 | } | |
288 | ||
289 | (*cb)(context, result, message); | |
290 | } | |
291 | ||
292 | return (result); | |
293 | } | |
294 | ||
295 | ||
296 | /* | |
297 | * '_cupsFileCheckFilter()' - Report file check results as CUPS filter messages. | |
298 | */ | |
299 | ||
300 | void | |
301 | _cupsFileCheckFilter( | |
302 | void *context, /* I - Context pointer (unused) */ | |
303 | _cups_fc_result_t result, /* I - Result code */ | |
304 | const char *message) /* I - Message text */ | |
305 | { | |
306 | const char *prefix; /* Messaging prefix */ | |
307 | ||
308 | ||
309 | switch (result) | |
310 | { | |
311 | case _CUPS_FILE_CHECK_OK : | |
312 | prefix = "DEBUG2"; | |
313 | break; | |
314 | ||
315 | case _CUPS_FILE_CHECK_MISSING : | |
316 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
317 | prefix = "ERROR"; | |
318 | fputs("STATE: +cups-missing-filter-warning\n", stderr); | |
319 | break; | |
320 | ||
321 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
322 | prefix = "ERROR"; | |
323 | fputs("STATE: +cups-insecure-filter-warning\n", stderr); | |
324 | break; | |
325 | } | |
326 | ||
327 | fprintf(stderr, "%s: %s\n", prefix, message); | |
328 | } | |
329 | ||
330 | ||
ef416fc2 | 331 | /* |
332 | * 'cupsFileClose()' - Close a CUPS file. | |
5a738aea | 333 | * |
426c6a59 | 334 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 335 | */ |
336 | ||
337 | int /* O - 0 on success, -1 on error */ | |
338 | cupsFileClose(cups_file_t *fp) /* I - CUPS file */ | |
339 | { | |
340 | int fd; /* File descriptor */ | |
341 | char mode; /* Open mode */ | |
342 | int status; /* Return status */ | |
80ca4592 | 343 | int is_stdio; /* Is a stdio file? */ |
ef416fc2 | 344 | |
345 | ||
e07d4801 | 346 | DEBUG_printf(("cupsFileClose(fp=%p)", fp)); |
ef416fc2 | 347 | |
348 | /* | |
349 | * Range check... | |
350 | */ | |
351 | ||
352 | if (!fp) | |
353 | return (-1); | |
354 | ||
355 | /* | |
356 | * Flush pending write data... | |
357 | */ | |
358 | ||
359 | if (fp->mode == 'w') | |
360 | status = cupsFileFlush(fp); | |
361 | else | |
362 | status = 0; | |
363 | ||
364 | #ifdef HAVE_LIBZ | |
365 | if (fp->compressed && status >= 0) | |
366 | { | |
367 | if (fp->mode == 'r') | |
368 | { | |
369 | /* | |
370 | * Free decompression data... | |
371 | */ | |
372 | ||
373 | inflateEnd(&fp->stream); | |
374 | } | |
375 | else | |
376 | { | |
377 | /* | |
378 | * Flush any remaining compressed data... | |
379 | */ | |
380 | ||
381 | unsigned char trailer[8]; /* Trailer CRC and length */ | |
382 | int done; /* Done writing... */ | |
383 | ||
384 | ||
385 | fp->stream.avail_in = 0; | |
386 | ||
387 | for (done = 0;;) | |
388 | { | |
389 | if (fp->stream.next_out > fp->cbuf) | |
390 | { | |
391 | if (cups_write(fp, (char *)fp->cbuf, | |
392 | fp->stream.next_out - fp->cbuf) < 0) | |
393 | status = -1; | |
394 | ||
395 | fp->stream.next_out = fp->cbuf; | |
396 | fp->stream.avail_out = sizeof(fp->cbuf); | |
397 | } | |
398 | ||
399 | if (done || status < 0) | |
400 | break; | |
401 | ||
402 | done = deflate(&fp->stream, Z_FINISH) == Z_STREAM_END && | |
403 | fp->stream.next_out == fp->cbuf; | |
404 | } | |
405 | ||
406 | /* | |
407 | * Write the CRC and length... | |
408 | */ | |
409 | ||
410 | trailer[0] = fp->crc; | |
411 | trailer[1] = fp->crc >> 8; | |
412 | trailer[2] = fp->crc >> 16; | |
413 | trailer[3] = fp->crc >> 24; | |
414 | trailer[4] = fp->pos; | |
415 | trailer[5] = fp->pos >> 8; | |
416 | trailer[6] = fp->pos >> 16; | |
417 | trailer[7] = fp->pos >> 24; | |
418 | ||
419 | if (cups_write(fp, (char *)trailer, 8) < 0) | |
420 | status = -1; | |
421 | ||
422 | /* | |
423 | * Free all memory used by the compression stream... | |
424 | */ | |
425 | ||
426 | deflateEnd(&(fp->stream)); | |
427 | } | |
428 | } | |
429 | #endif /* HAVE_LIBZ */ | |
430 | ||
431 | /* | |
432 | * Save the file descriptor we used and free memory... | |
433 | */ | |
434 | ||
80ca4592 | 435 | fd = fp->fd; |
436 | mode = fp->mode; | |
437 | is_stdio = fp->is_stdio; | |
ef416fc2 | 438 | |
75bd9771 MS |
439 | if (fp->printf_buffer) |
440 | free(fp->printf_buffer); | |
441 | ||
ef416fc2 | 442 | free(fp); |
443 | ||
444 | /* | |
445 | * Close the file, returning the close status... | |
446 | */ | |
447 | ||
448 | if (mode == 's') | |
449 | { | |
450 | if (closesocket(fd) < 0) | |
451 | status = -1; | |
452 | } | |
80ca4592 | 453 | else if (!is_stdio) |
ef416fc2 | 454 | { |
455 | if (close(fd) < 0) | |
456 | status = -1; | |
457 | } | |
458 | ||
459 | return (status); | |
460 | } | |
461 | ||
462 | ||
463 | /* | |
464 | * 'cupsFileCompression()' - Return whether a file is compressed. | |
5a738aea | 465 | * |
426c6a59 | 466 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 467 | */ |
468 | ||
5a738aea | 469 | int /* O - @code CUPS_FILE_NONE@ or @code CUPS_FILE_GZIP@ */ |
ef416fc2 | 470 | cupsFileCompression(cups_file_t *fp) /* I - CUPS file */ |
471 | { | |
80ca4592 | 472 | return (fp ? fp->compressed : CUPS_FILE_NONE); |
ef416fc2 | 473 | } |
474 | ||
475 | ||
476 | /* | |
477 | * 'cupsFileEOF()' - Return the end-of-file status. | |
5a738aea | 478 | * |
426c6a59 | 479 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 480 | */ |
481 | ||
5a738aea | 482 | int /* O - 1 on end of file, 0 otherwise */ |
ef416fc2 | 483 | cupsFileEOF(cups_file_t *fp) /* I - CUPS file */ |
484 | { | |
80ca4592 | 485 | return (fp ? fp->eof : 1); |
ef416fc2 | 486 | } |
487 | ||
488 | ||
fa73b229 | 489 | /* |
490 | * 'cupsFileFind()' - Find a file using the specified path. | |
491 | * | |
492 | * This function allows the paths in the path string to be separated by | |
493 | * colons (UNIX standard) or semicolons (Windows standard) and stores the | |
494 | * result in the buffer supplied. If the file cannot be found in any of | |
5a738aea MS |
495 | * the supplied paths, @code NULL@ is returned. A @code NULL@ path only |
496 | * matches the current directory. | |
497 | * | |
426c6a59 | 498 | * @since CUPS 1.2/Mac OS X 10.5@ |
fa73b229 | 499 | */ |
500 | ||
5a738aea | 501 | const char * /* O - Full path to file or @code NULL@ if not found */ |
fa73b229 | 502 | cupsFileFind(const char *filename, /* I - File to find */ |
503 | const char *path, /* I - Colon/semicolon-separated path */ | |
4400e98d | 504 | int executable, /* I - 1 = executable files, 0 = any file/dir */ |
505 | char *buffer, /* I - Filename buffer */ | |
fa73b229 | 506 | int bufsize) /* I - Size of filename buffer */ |
507 | { | |
508 | char *bufptr, /* Current position in buffer */ | |
509 | *bufend; /* End of buffer */ | |
510 | ||
511 | ||
512 | /* | |
513 | * Range check input... | |
514 | */ | |
515 | ||
e07d4801 MS |
516 | DEBUG_printf(("cupsFileFind(filename=\"%s\", path=\"%s\", executable=%d, " |
517 | "buffer=%p, bufsize=%d)", filename, path, executable, buffer, | |
518 | bufsize)); | |
519 | ||
fa73b229 | 520 | if (!filename || !buffer || bufsize < 2) |
521 | return (NULL); | |
522 | ||
523 | if (!path) | |
524 | { | |
525 | /* | |
526 | * No path, so check current directory... | |
527 | */ | |
528 | ||
529 | if (!access(filename, 0)) | |
530 | { | |
531 | strlcpy(buffer, filename, bufsize); | |
532 | return (buffer); | |
533 | } | |
534 | else | |
535 | return (NULL); | |
536 | } | |
537 | ||
538 | /* | |
539 | * Now check each path and return the first match... | |
540 | */ | |
541 | ||
542 | bufend = buffer + bufsize - 1; | |
543 | bufptr = buffer; | |
544 | ||
545 | while (*path) | |
546 | { | |
b86bc4cf | 547 | #ifdef WIN32 |
548 | if (*path == ';' || (*path == ':' && ((bufptr - buffer) > 1 || !isalpha(buffer[0] & 255)))) | |
549 | #else | |
fa73b229 | 550 | if (*path == ';' || *path == ':') |
b86bc4cf | 551 | #endif /* WIN32 */ |
fa73b229 | 552 | { |
553 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
554 | *bufptr++ = '/'; | |
555 | ||
556 | strlcpy(bufptr, filename, bufend - bufptr); | |
557 | ||
4400e98d | 558 | #ifdef WIN32 |
fa73b229 | 559 | if (!access(buffer, 0)) |
4400e98d | 560 | #else |
561 | if (!access(buffer, executable ? X_OK : 0)) | |
562 | #endif /* WIN32 */ | |
b86bc4cf | 563 | { |
e07d4801 | 564 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 565 | return (buffer); |
b86bc4cf | 566 | } |
fa73b229 | 567 | |
568 | bufptr = buffer; | |
569 | } | |
570 | else if (bufptr < bufend) | |
571 | *bufptr++ = *path; | |
572 | ||
573 | path ++; | |
574 | } | |
575 | ||
576 | /* | |
577 | * Check the last path... | |
578 | */ | |
579 | ||
580 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
581 | *bufptr++ = '/'; | |
582 | ||
583 | strlcpy(bufptr, filename, bufend - bufptr); | |
584 | ||
585 | if (!access(buffer, 0)) | |
b86bc4cf | 586 | { |
e07d4801 | 587 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 588 | return (buffer); |
b86bc4cf | 589 | } |
fa73b229 | 590 | else |
b86bc4cf | 591 | { |
e07d4801 | 592 | DEBUG_puts("1cupsFileFind: Returning NULL"); |
fa73b229 | 593 | return (NULL); |
b86bc4cf | 594 | } |
fa73b229 | 595 | } |
596 | ||
597 | ||
ef416fc2 | 598 | /* |
599 | * 'cupsFileFlush()' - Flush pending output. | |
5a738aea | 600 | * |
426c6a59 | 601 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 602 | */ |
603 | ||
604 | int /* O - 0 on success, -1 on error */ | |
605 | cupsFileFlush(cups_file_t *fp) /* I - CUPS file */ | |
606 | { | |
2abf387c | 607 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 608 | |
609 | ||
e07d4801 | 610 | DEBUG_printf(("cupsFileFlush(fp=%p)", fp)); |
ef416fc2 | 611 | |
612 | /* | |
613 | * Range check input... | |
614 | */ | |
615 | ||
616 | if (!fp || fp->mode != 'w') | |
617 | { | |
e07d4801 | 618 | DEBUG_puts("1cupsFileFlush: Attempt to flush a read-only file..."); |
ef416fc2 | 619 | return (-1); |
620 | } | |
621 | ||
b86bc4cf | 622 | bytes = (ssize_t)(fp->ptr - fp->buf); |
ef416fc2 | 623 | |
e07d4801 | 624 | DEBUG_printf(("2cupsFileFlush: Flushing " CUPS_LLFMT " bytes...", |
634763e8 | 625 | CUPS_LLCAST bytes)); |
ecdc0628 | 626 | |
ef416fc2 | 627 | if (bytes > 0) |
628 | { | |
629 | #ifdef HAVE_LIBZ | |
630 | if (fp->compressed) | |
631 | bytes = cups_compress(fp, fp->buf, bytes); | |
632 | else | |
633 | #endif /* HAVE_LIBZ */ | |
634 | bytes = cups_write(fp, fp->buf, bytes); | |
635 | ||
636 | if (bytes < 0) | |
637 | return (-1); | |
638 | ||
639 | fp->ptr = fp->buf; | |
640 | } | |
f14324a7 | 641 | |
ef416fc2 | 642 | return (0); |
643 | } | |
644 | ||
645 | ||
646 | /* | |
647 | * 'cupsFileGetChar()' - Get a single character from a file. | |
5a738aea | 648 | * |
426c6a59 | 649 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 650 | */ |
651 | ||
5a738aea | 652 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 653 | cupsFileGetChar(cups_file_t *fp) /* I - CUPS file */ |
654 | { | |
655 | /* | |
656 | * Range check input... | |
657 | */ | |
658 | ||
659 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
b86bc4cf | 660 | { |
f14324a7 | 661 | DEBUG_puts("5cupsFileGetChar: Bad arguments!"); |
ef416fc2 | 662 | return (-1); |
b86bc4cf | 663 | } |
ef416fc2 | 664 | |
665 | /* | |
666 | * If the input buffer is empty, try to read more data... | |
667 | */ | |
668 | ||
669 | if (fp->ptr >= fp->end) | |
670 | if (cups_fill(fp) < 0) | |
b86bc4cf | 671 | { |
f14324a7 | 672 | DEBUG_puts("5cupsFileGetChar: Unable to fill buffer!"); |
ef416fc2 | 673 | return (-1); |
b86bc4cf | 674 | } |
ef416fc2 | 675 | |
676 | /* | |
677 | * Return the next character in the buffer... | |
678 | */ | |
679 | ||
f14324a7 | 680 | DEBUG_printf(("5cupsFileGetChar: Returning %d...", *(fp->ptr) & 255)); |
b86bc4cf | 681 | |
634763e8 MS |
682 | fp->pos ++; |
683 | ||
f14324a7 | 684 | DEBUG_printf(("6cupsFileGetChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 685 | |
ef416fc2 | 686 | return (*(fp->ptr)++ & 255); |
687 | } | |
688 | ||
689 | ||
690 | /* | |
22c9029b | 691 | * 'cupsFileGetConf()' - Get a line from a configuration file. |
5a738aea | 692 | * |
426c6a59 | 693 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 694 | */ |
695 | ||
5a738aea | 696 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 697 | cupsFileGetConf(cups_file_t *fp, /* I - CUPS file */ |
698 | char *buf, /* O - String buffer */ | |
699 | size_t buflen, /* I - Size of string buffer */ | |
700 | char **value, /* O - Pointer to value */ | |
701 | int *linenum) /* IO - Current line number */ | |
702 | { | |
703 | char *ptr; /* Pointer into line */ | |
704 | ||
705 | ||
706 | /* | |
707 | * Range check input... | |
708 | */ | |
709 | ||
e07d4801 MS |
710 | DEBUG_printf(("2cupsFileGetConf(fp=%p, buf=%p, buflen=" CUPS_LLFMT |
711 | ", value=%p, linenum=%p)", fp, buf, CUPS_LLCAST buflen, | |
634763e8 MS |
712 | value, linenum)); |
713 | ||
ef416fc2 | 714 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || |
715 | !buf || buflen < 2 || !value) | |
716 | { | |
717 | if (value) | |
718 | *value = NULL; | |
719 | ||
720 | return (NULL); | |
721 | } | |
722 | ||
723 | /* | |
724 | * Read the next non-comment line... | |
725 | */ | |
726 | ||
727 | *value = NULL; | |
f7deaa1a | 728 | |
ef416fc2 | 729 | while (cupsFileGets(fp, buf, buflen)) |
730 | { | |
731 | (*linenum) ++; | |
732 | ||
733 | /* | |
734 | * Strip any comments... | |
735 | */ | |
736 | ||
737 | if ((ptr = strchr(buf, '#')) != NULL) | |
738 | { | |
f7deaa1a | 739 | if (ptr > buf && ptr[-1] == '\\') |
ef416fc2 | 740 | { |
f7deaa1a | 741 | // Unquote the #... |
742 | _cups_strcpy(ptr - 1, ptr); | |
ef416fc2 | 743 | } |
f7deaa1a | 744 | else |
745 | { | |
746 | // Strip the comment and any trailing whitespace... | |
747 | while (ptr > buf) | |
748 | { | |
7cf5915e | 749 | if (!_cups_isspace(ptr[-1])) |
f7deaa1a | 750 | break; |
751 | ||
752 | ptr --; | |
753 | } | |
ef416fc2 | 754 | |
f7deaa1a | 755 | *ptr = '\0'; |
756 | } | |
ef416fc2 | 757 | } |
758 | ||
759 | /* | |
760 | * Strip leading whitespace... | |
761 | */ | |
762 | ||
7cf5915e | 763 | for (ptr = buf; _cups_isspace(*ptr); ptr ++); |
ef416fc2 | 764 | |
765 | if (ptr > buf) | |
766 | _cups_strcpy(buf, ptr); | |
767 | ||
768 | /* | |
769 | * See if there is anything left... | |
770 | */ | |
771 | ||
772 | if (buf[0]) | |
773 | { | |
774 | /* | |
775 | * Yes, grab any value and return... | |
776 | */ | |
777 | ||
778 | for (ptr = buf; *ptr; ptr ++) | |
7cf5915e | 779 | if (_cups_isspace(*ptr)) |
ef416fc2 | 780 | break; |
781 | ||
782 | if (*ptr) | |
783 | { | |
784 | /* | |
785 | * Have a value, skip any other spaces... | |
786 | */ | |
787 | ||
7cf5915e | 788 | while (_cups_isspace(*ptr)) |
ef416fc2 | 789 | *ptr++ = '\0'; |
790 | ||
791 | if (*ptr) | |
792 | *value = ptr; | |
793 | ||
794 | /* | |
795 | * Strip trailing whitespace and > for lines that begin with <... | |
796 | */ | |
797 | ||
798 | ptr += strlen(ptr) - 1; | |
799 | ||
800 | if (buf[0] == '<' && *ptr == '>') | |
801 | *ptr-- = '\0'; | |
802 | else if (buf[0] == '<' && *ptr != '>') | |
803 | { | |
804 | /* | |
805 | * Syntax error... | |
806 | */ | |
807 | ||
808 | *value = NULL; | |
809 | return (buf); | |
810 | } | |
811 | ||
7cf5915e | 812 | while (ptr > *value && _cups_isspace(*ptr)) |
ef416fc2 | 813 | *ptr-- = '\0'; |
814 | } | |
815 | ||
816 | /* | |
817 | * Return the line... | |
818 | */ | |
819 | ||
820 | return (buf); | |
821 | } | |
822 | } | |
823 | ||
824 | return (NULL); | |
825 | } | |
826 | ||
827 | ||
80ca4592 | 828 | /* |
829 | * 'cupsFileGetLine()' - Get a CR and/or LF-terminated line that may | |
830 | * contain binary data. | |
831 | * | |
5a738aea MS |
832 | * This function differs from @link cupsFileGets@ in that the trailing CR |
833 | * and LF are preserved, as is any binary data on the line. The buffer is | |
834 | * nul-terminated, however you should use the returned length to determine | |
80ca4592 | 835 | * the number of bytes on the line. |
5a738aea | 836 | * |
426c6a59 | 837 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 838 | */ |
839 | ||
5a738aea | 840 | size_t /* O - Number of bytes on line or 0 on end of file */ |
80ca4592 | 841 | cupsFileGetLine(cups_file_t *fp, /* I - File to read from */ |
842 | char *buf, /* I - Buffer */ | |
843 | size_t buflen) /* I - Size of buffer */ | |
844 | { | |
845 | int ch; /* Character from file */ | |
846 | char *ptr, /* Current position in line buffer */ | |
847 | *end; /* End of line buffer */ | |
848 | ||
849 | ||
850 | /* | |
851 | * Range check input... | |
852 | */ | |
853 | ||
e07d4801 | 854 | DEBUG_printf(("2cupsFileGetLine(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", |
634763e8 MS |
855 | fp, buf, CUPS_LLCAST buflen)); |
856 | ||
80ca4592 | 857 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 3) |
858 | return (0); | |
859 | ||
860 | /* | |
861 | * Now loop until we have a valid line... | |
862 | */ | |
863 | ||
864 | for (ptr = buf, end = buf + buflen - 2; ptr < end ;) | |
865 | { | |
866 | if (fp->ptr >= fp->end) | |
867 | if (cups_fill(fp) <= 0) | |
868 | break; | |
869 | ||
870 | *ptr++ = ch = *(fp->ptr)++; | |
634763e8 | 871 | fp->pos ++; |
80ca4592 | 872 | |
873 | if (ch == '\r') | |
874 | { | |
875 | /* | |
876 | * Check for CR LF... | |
877 | */ | |
878 | ||
879 | if (fp->ptr >= fp->end) | |
880 | if (cups_fill(fp) <= 0) | |
881 | break; | |
882 | ||
883 | if (*(fp->ptr) == '\n') | |
634763e8 | 884 | { |
80ca4592 | 885 | *ptr++ = *(fp->ptr)++; |
634763e8 MS |
886 | fp->pos ++; |
887 | } | |
80ca4592 | 888 | |
889 | break; | |
890 | } | |
891 | else if (ch == '\n') | |
892 | { | |
893 | /* | |
894 | * Line feed ends a line... | |
895 | */ | |
896 | ||
897 | break; | |
898 | } | |
899 | } | |
900 | ||
901 | *ptr = '\0'; | |
902 | ||
e07d4801 | 903 | DEBUG_printf(("4cupsFileGetLine: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 904 | |
80ca4592 | 905 | return (ptr - buf); |
906 | } | |
907 | ||
908 | ||
ef416fc2 | 909 | /* |
910 | * 'cupsFileGets()' - Get a CR and/or LF-terminated line. | |
5a738aea | 911 | * |
426c6a59 | 912 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 913 | */ |
914 | ||
5a738aea | 915 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 916 | cupsFileGets(cups_file_t *fp, /* I - CUPS file */ |
917 | char *buf, /* O - String buffer */ | |
918 | size_t buflen) /* I - Size of string buffer */ | |
919 | { | |
920 | int ch; /* Character from file */ | |
921 | char *ptr, /* Current position in line buffer */ | |
922 | *end; /* End of line buffer */ | |
923 | ||
924 | ||
925 | /* | |
926 | * Range check input... | |
927 | */ | |
928 | ||
e07d4801 | 929 | DEBUG_printf(("2cupsFileGets(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
930 | CUPS_LLCAST buflen)); |
931 | ||
ef416fc2 | 932 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 2) |
933 | return (NULL); | |
934 | ||
935 | /* | |
936 | * Now loop until we have a valid line... | |
937 | */ | |
938 | ||
939 | for (ptr = buf, end = buf + buflen - 1; ptr < end ;) | |
940 | { | |
941 | if (fp->ptr >= fp->end) | |
942 | if (cups_fill(fp) <= 0) | |
943 | { | |
944 | if (ptr == buf) | |
945 | return (NULL); | |
946 | else | |
947 | break; | |
948 | } | |
949 | ||
950 | ch = *(fp->ptr)++; | |
634763e8 | 951 | fp->pos ++; |
ef416fc2 | 952 | |
953 | if (ch == '\r') | |
954 | { | |
955 | /* | |
956 | * Check for CR LF... | |
957 | */ | |
958 | ||
959 | if (fp->ptr >= fp->end) | |
960 | if (cups_fill(fp) <= 0) | |
961 | break; | |
962 | ||
963 | if (*(fp->ptr) == '\n') | |
634763e8 MS |
964 | { |
965 | fp->ptr ++; | |
966 | fp->pos ++; | |
967 | } | |
ef416fc2 | 968 | |
969 | break; | |
970 | } | |
971 | else if (ch == '\n') | |
972 | { | |
973 | /* | |
974 | * Line feed ends a line... | |
975 | */ | |
976 | ||
977 | break; | |
978 | } | |
979 | else | |
980 | *ptr++ = ch; | |
981 | } | |
982 | ||
983 | *ptr = '\0'; | |
984 | ||
e07d4801 | 985 | DEBUG_printf(("4cupsFileGets: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 986 | |
ef416fc2 | 987 | return (buf); |
988 | } | |
989 | ||
990 | ||
991 | /* | |
992 | * 'cupsFileLock()' - Temporarily lock access to a file. | |
5a738aea | 993 | * |
426c6a59 | 994 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 995 | */ |
996 | ||
997 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 998 | cupsFileLock(cups_file_t *fp, /* I - CUPS file */ |
ef416fc2 | 999 | int block) /* I - 1 to wait for the lock, 0 to fail right away */ |
1000 | { | |
1001 | /* | |
1002 | * Range check... | |
1003 | */ | |
1004 | ||
1005 | if (!fp || fp->mode == 's') | |
1006 | return (-1); | |
1007 | ||
1008 | /* | |
1009 | * Try the lock... | |
1010 | */ | |
1011 | ||
1012 | #ifdef WIN32 | |
536bc2c6 | 1013 | return (_locking(fp->fd, block ? _LK_LOCK : _LK_NBLCK, 0)); |
ef416fc2 | 1014 | #else |
1015 | return (lockf(fp->fd, block ? F_LOCK : F_TLOCK, 0)); | |
1016 | #endif /* WIN32 */ | |
1017 | } | |
1018 | ||
1019 | ||
1020 | /* | |
1021 | * 'cupsFileNumber()' - Return the file descriptor associated with a CUPS file. | |
5a738aea | 1022 | * |
426c6a59 | 1023 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1024 | */ |
1025 | ||
1026 | int /* O - File descriptor */ | |
1027 | cupsFileNumber(cups_file_t *fp) /* I - CUPS file */ | |
1028 | { | |
5a738aea MS |
1029 | if (fp) |
1030 | return (fp->fd); | |
1031 | else | |
1032 | return (-1); | |
ef416fc2 | 1033 | } |
1034 | ||
1035 | ||
1036 | /* | |
1037 | * 'cupsFileOpen()' - Open a CUPS file. | |
5a738aea MS |
1038 | * |
1039 | * The "mode" parameter can be "r" to read, "w" to write, overwriting any | |
1040 | * existing file, "a" to append to an existing file or create a new file, | |
1041 | * or "s" to open a socket connection. | |
1042 | * | |
634763e8 MS |
1043 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1044 | * supplied which enables Flate compression of the file. Compression is | |
1045 | * not supported for the "a" (append) mode. | |
5a738aea MS |
1046 | * |
1047 | * When opening a socket connection, the filename is a string of the form | |
1048 | * "address:port" or "hostname:port". The socket will make an IPv4 or IPv6 | |
1049 | * connection as needed, generally preferring IPv6 connections when there is | |
1050 | * a choice. | |
1051 | * | |
426c6a59 | 1052 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1053 | */ |
1054 | ||
5a738aea | 1055 | cups_file_t * /* O - CUPS file or @code NULL@ if the file or socket cannot be opened */ |
ef416fc2 | 1056 | cupsFileOpen(const char *filename, /* I - Name of file */ |
1057 | const char *mode) /* I - Open mode */ | |
1058 | { | |
1059 | cups_file_t *fp; /* New CUPS file */ | |
1060 | int fd; /* File descriptor */ | |
1061 | char hostname[1024], /* Hostname */ | |
1062 | *portname; /* Port "name" (number or service) */ | |
1063 | http_addrlist_t *addrlist; /* Host address list */ | |
1064 | ||
1065 | ||
e07d4801 | 1066 | DEBUG_printf(("cupsFileOpen(filename=\"%s\", mode=\"%s\")", filename, |
b423cd4c | 1067 | mode)); |
1068 | ||
ef416fc2 | 1069 | /* |
1070 | * Range check input... | |
1071 | */ | |
1072 | ||
1073 | if (!filename || !mode || | |
634763e8 MS |
1074 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1075 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1076 | return (NULL); |
1077 | ||
1078 | /* | |
1079 | * Open the file... | |
1080 | */ | |
1081 | ||
1082 | switch (*mode) | |
1083 | { | |
1084 | case 'a' : /* Append file */ | |
c7017ecc MS |
1085 | fd = cups_open(filename, |
1086 | O_RDWR | O_CREAT | O_APPEND | O_LARGEFILE | O_BINARY); | |
ef416fc2 | 1087 | break; |
1088 | ||
1089 | case 'r' : /* Read file */ | |
b86bc4cf | 1090 | fd = open(filename, O_RDONLY | O_LARGEFILE | O_BINARY, 0); |
ef416fc2 | 1091 | break; |
1092 | ||
1093 | case 'w' : /* Write file */ | |
c7017ecc MS |
1094 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); |
1095 | if (fd < 0 && errno == ENOENT) | |
1096 | { | |
1097 | fd = cups_open(filename, | |
1098 | O_WRONLY | O_CREAT | O_EXCL | O_LARGEFILE | O_BINARY); | |
1099 | if (fd < 0 && errno == EEXIST) | |
1100 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); | |
1101 | } | |
1102 | ||
1103 | if (fd >= 0) | |
1104 | #ifdef WIN32 | |
1105 | _chsize(fd, 0); | |
1106 | #else | |
1107 | ftruncate(fd, 0); | |
1108 | #endif /* WIN32 */ | |
ef416fc2 | 1109 | break; |
1110 | ||
1111 | case 's' : /* Read/write socket */ | |
1112 | strlcpy(hostname, filename, sizeof(hostname)); | |
1113 | if ((portname = strrchr(hostname, ':')) != NULL) | |
1114 | *portname++ = '\0'; | |
1115 | else | |
1116 | return (NULL); | |
1117 | ||
1118 | /* | |
1119 | * Lookup the hostname and service... | |
1120 | */ | |
1121 | ||
1122 | if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL) | |
1123 | return (NULL); | |
1124 | ||
1125 | /* | |
1126 | * Connect to the server... | |
1127 | */ | |
1128 | ||
1129 | if (!httpAddrConnect(addrlist, &fd)) | |
1130 | { | |
1131 | httpAddrFreeList(addrlist); | |
1132 | return (NULL); | |
1133 | } | |
1134 | ||
1135 | httpAddrFreeList(addrlist); | |
1136 | break; | |
1137 | ||
1138 | default : /* Remove bogus compiler warning... */ | |
1139 | return (NULL); | |
1140 | } | |
1141 | ||
1142 | if (fd < 0) | |
1143 | return (NULL); | |
1144 | ||
1145 | /* | |
1146 | * Create the CUPS file structure... | |
1147 | */ | |
1148 | ||
1149 | if ((fp = cupsFileOpenFd(fd, mode)) == NULL) | |
1150 | { | |
1151 | if (*mode == 's') | |
1152 | closesocket(fd); | |
1153 | else | |
1154 | close(fd); | |
1155 | } | |
1156 | ||
1157 | /* | |
1158 | * Return it... | |
1159 | */ | |
1160 | ||
1161 | return (fp); | |
1162 | } | |
1163 | ||
1164 | /* | |
1165 | * 'cupsFileOpenFd()' - Open a CUPS file using a file descriptor. | |
5a738aea | 1166 | * |
634763e8 MS |
1167 | * The "mode" parameter can be "r" to read, "w" to write, "a" to append, |
1168 | * or "s" to treat the file descriptor as a bidirectional socket connection. | |
5a738aea | 1169 | * |
634763e8 MS |
1170 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1171 | * supplied which enables Flate compression of the file. Compression is | |
1172 | * not supported for the "a" (append) mode. | |
5a738aea | 1173 | * |
426c6a59 | 1174 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1175 | */ |
1176 | ||
5a738aea | 1177 | cups_file_t * /* O - CUPS file or @code NULL@ if the file could not be opened */ |
ef416fc2 | 1178 | cupsFileOpenFd(int fd, /* I - File descriptor */ |
1179 | const char *mode) /* I - Open mode */ | |
1180 | { | |
1181 | cups_file_t *fp; /* New CUPS file */ | |
1182 | ||
1183 | ||
e07d4801 | 1184 | DEBUG_printf(("cupsFileOpenFd(fd=%d, mode=\"%s\")", fd, mode)); |
b423cd4c | 1185 | |
ef416fc2 | 1186 | /* |
1187 | * Range check input... | |
1188 | */ | |
1189 | ||
1190 | if (fd < 0 || !mode || | |
634763e8 MS |
1191 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1192 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1193 | return (NULL); |
1194 | ||
1195 | /* | |
1196 | * Allocate memory... | |
1197 | */ | |
1198 | ||
1199 | if ((fp = calloc(1, sizeof(cups_file_t))) == NULL) | |
1200 | return (NULL); | |
1201 | ||
1202 | /* | |
1203 | * Open the file... | |
1204 | */ | |
1205 | ||
1206 | fp->fd = fd; | |
1207 | ||
1208 | switch (*mode) | |
1209 | { | |
ef416fc2 | 1210 | case 'a' : |
634763e8 MS |
1211 | fp->pos = lseek(fd, 0, SEEK_END); |
1212 | ||
1213 | case 'w' : | |
ef416fc2 | 1214 | fp->mode = 'w'; |
1215 | fp->ptr = fp->buf; | |
1216 | fp->end = fp->buf + sizeof(fp->buf); | |
1217 | ||
1218 | #ifdef HAVE_LIBZ | |
1219 | if (mode[1] >= '1' && mode[1] <= '9') | |
1220 | { | |
1221 | /* | |
1222 | * Open a compressed stream, so write the standard gzip file | |
1223 | * header... | |
1224 | */ | |
1225 | ||
1226 | unsigned char header[10]; /* gzip file header */ | |
1227 | time_t curtime; /* Current time */ | |
1228 | ||
1229 | ||
1230 | curtime = time(NULL); | |
1231 | header[0] = 0x1f; | |
1232 | header[1] = 0x8b; | |
1233 | header[2] = Z_DEFLATED; | |
1234 | header[3] = 0; | |
1235 | header[4] = curtime; | |
1236 | header[5] = curtime >> 8; | |
1237 | header[6] = curtime >> 16; | |
1238 | header[7] = curtime >> 24; | |
1239 | header[8] = 0; | |
1240 | header[9] = 0x03; | |
1241 | ||
1242 | cups_write(fp, (char *)header, 10); | |
1243 | ||
1244 | /* | |
1245 | * Initialize the compressor... | |
1246 | */ | |
1247 | ||
1248 | deflateInit2(&(fp->stream), mode[1] - '0', Z_DEFLATED, -15, 8, | |
1249 | Z_DEFAULT_STRATEGY); | |
1250 | ||
1251 | fp->stream.next_out = fp->cbuf; | |
1252 | fp->stream.avail_out = sizeof(fp->cbuf); | |
1253 | fp->compressed = 1; | |
1254 | fp->crc = crc32(0L, Z_NULL, 0); | |
1255 | } | |
1256 | #endif /* HAVE_LIBZ */ | |
1257 | break; | |
1258 | ||
1259 | case 'r' : | |
1260 | fp->mode = 'r'; | |
1261 | break; | |
1262 | ||
1263 | case 's' : | |
1264 | fp->mode = 's'; | |
1265 | break; | |
1266 | ||
1267 | default : /* Remove bogus compiler warning... */ | |
1268 | return (NULL); | |
1269 | } | |
1270 | ||
1271 | /* | |
1272 | * Don't pass this file to child processes... | |
1273 | */ | |
1274 | ||
1275 | #ifndef WIN32 | |
1276 | fcntl(fp->fd, F_SETFD, fcntl(fp->fd, F_GETFD) | FD_CLOEXEC); | |
1277 | #endif /* !WIN32 */ | |
1278 | ||
1279 | return (fp); | |
1280 | } | |
1281 | ||
1282 | ||
1283 | /* | |
1284 | * 'cupsFilePeekChar()' - Peek at the next character from a file. | |
5a738aea | 1285 | * |
426c6a59 | 1286 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1287 | */ |
1288 | ||
5a738aea | 1289 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 1290 | cupsFilePeekChar(cups_file_t *fp) /* I - CUPS file */ |
1291 | { | |
1292 | /* | |
1293 | * Range check input... | |
1294 | */ | |
1295 | ||
1296 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
1297 | return (-1); | |
1298 | ||
1299 | /* | |
1300 | * If the input buffer is empty, try to read more data... | |
1301 | */ | |
1302 | ||
1303 | if (fp->ptr >= fp->end) | |
1304 | if (cups_fill(fp) < 0) | |
1305 | return (-1); | |
1306 | ||
1307 | /* | |
1308 | * Return the next character in the buffer... | |
1309 | */ | |
1310 | ||
1311 | return (*(fp->ptr) & 255); | |
1312 | } | |
1313 | ||
1314 | ||
1315 | /* | |
1316 | * 'cupsFilePrintf()' - Write a formatted string. | |
5a738aea | 1317 | * |
426c6a59 | 1318 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1319 | */ |
1320 | ||
5a738aea | 1321 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1322 | cupsFilePrintf(cups_file_t *fp, /* I - CUPS file */ |
1323 | const char *format, /* I - Printf-style format string */ | |
1324 | ...) /* I - Additional args as necessary */ | |
1325 | { | |
1326 | va_list ap; /* Argument list */ | |
2abf387c | 1327 | ssize_t bytes; /* Formatted size */ |
ecdc0628 | 1328 | |
ef416fc2 | 1329 | |
e07d4801 | 1330 | DEBUG_printf(("2cupsFilePrintf(fp=%p, format=\"%s\", ...)", fp, format)); |
ef416fc2 | 1331 | |
1332 | if (!fp || !format || (fp->mode != 'w' && fp->mode != 's')) | |
1333 | return (-1); | |
1334 | ||
75bd9771 MS |
1335 | if (!fp->printf_buffer) |
1336 | { | |
1337 | /* | |
1338 | * Start with an 1k printf buffer... | |
1339 | */ | |
1340 | ||
1341 | if ((fp->printf_buffer = malloc(1024)) == NULL) | |
1342 | return (-1); | |
1343 | ||
1344 | fp->printf_size = 1024; | |
1345 | } | |
1346 | ||
ef416fc2 | 1347 | va_start(ap, format); |
75bd9771 | 1348 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); |
ef416fc2 | 1349 | va_end(ap); |
1350 | ||
536bc2c6 | 1351 | if (bytes >= (ssize_t)fp->printf_size) |
75bd9771 MS |
1352 | { |
1353 | /* | |
1354 | * Expand the printf buffer... | |
1355 | */ | |
1356 | ||
1357 | char *temp; /* Temporary buffer pointer */ | |
1358 | ||
1359 | ||
1360 | if (bytes > 65535) | |
1361 | return (-1); | |
1362 | ||
1363 | if ((temp = realloc(fp->printf_buffer, bytes + 1)) == NULL) | |
1364 | return (-1); | |
1365 | ||
1366 | fp->printf_buffer = temp; | |
1367 | fp->printf_size = bytes + 1; | |
1368 | ||
1369 | va_start(ap, format); | |
1370 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); | |
1371 | va_end(ap); | |
1372 | } | |
ecdc0628 | 1373 | |
ef416fc2 | 1374 | if (fp->mode == 's') |
634763e8 | 1375 | { |
75bd9771 | 1376 | if (cups_write(fp, fp->printf_buffer, bytes) < 0) |
634763e8 MS |
1377 | return (-1); |
1378 | ||
1379 | fp->pos += bytes; | |
1380 | ||
e07d4801 | 1381 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 MS |
1382 | |
1383 | return (bytes); | |
1384 | } | |
ef416fc2 | 1385 | |
1386 | if ((fp->ptr + bytes) > fp->end) | |
1387 | if (cupsFileFlush(fp)) | |
1388 | return (-1); | |
1389 | ||
1390 | fp->pos += bytes; | |
1391 | ||
e07d4801 | 1392 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1393 | |
ef416fc2 | 1394 | if (bytes > sizeof(fp->buf)) |
1395 | { | |
1396 | #ifdef HAVE_LIBZ | |
1397 | if (fp->compressed) | |
75bd9771 | 1398 | return (cups_compress(fp, fp->printf_buffer, bytes)); |
ef416fc2 | 1399 | else |
1400 | #endif /* HAVE_LIBZ */ | |
75bd9771 | 1401 | return (cups_write(fp, fp->printf_buffer, bytes)); |
ef416fc2 | 1402 | } |
1403 | else | |
1404 | { | |
75bd9771 | 1405 | memcpy(fp->ptr, fp->printf_buffer, bytes); |
ef416fc2 | 1406 | fp->ptr += bytes; |
1407 | return (bytes); | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | ||
1412 | /* | |
1413 | * 'cupsFilePutChar()' - Write a character. | |
5a738aea | 1414 | * |
426c6a59 | 1415 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1416 | */ |
1417 | ||
1418 | int /* O - 0 on success, -1 on error */ | |
1419 | cupsFilePutChar(cups_file_t *fp, /* I - CUPS file */ | |
1420 | int c) /* I - Character to write */ | |
1421 | { | |
1422 | /* | |
1423 | * Range check input... | |
1424 | */ | |
1425 | ||
1426 | if (!fp || (fp->mode != 'w' && fp->mode != 's')) | |
1427 | return (-1); | |
1428 | ||
1429 | if (fp->mode == 's') | |
1430 | { | |
1431 | /* | |
1432 | * Send character immediately over socket... | |
1433 | */ | |
1434 | ||
1435 | char ch; /* Output character */ | |
1436 | ||
1437 | ||
1438 | ch = c; | |
1439 | ||
1440 | if (send(fp->fd, &ch, 1, 0) < 1) | |
1441 | return (-1); | |
1442 | } | |
1443 | else | |
1444 | { | |
1445 | /* | |
1446 | * Buffer it up... | |
1447 | */ | |
1448 | ||
1449 | if (fp->ptr >= fp->end) | |
1450 | if (cupsFileFlush(fp)) | |
1451 | return (-1); | |
1452 | ||
1453 | *(fp->ptr) ++ = c; | |
1454 | } | |
1455 | ||
1456 | fp->pos ++; | |
1457 | ||
e07d4801 | 1458 | DEBUG_printf(("4cupsFilePutChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1459 | |
ef416fc2 | 1460 | return (0); |
1461 | } | |
1462 | ||
1463 | ||
58dc1933 MS |
1464 | /* |
1465 | * 'cupsFilePutConf()' - Write a configuration line. | |
1466 | * | |
1467 | * This function handles any comment escaping of the value. | |
1468 | * | |
178cb736 | 1469 | * @since CUPS 1.4/Mac OS X 10.6@ |
58dc1933 MS |
1470 | */ |
1471 | ||
1472 | ssize_t /* O - Number of bytes written or -1 on error */ | |
1473 | cupsFilePutConf(cups_file_t *fp, /* I - CUPS file */ | |
1474 | const char *directive, /* I - Directive */ | |
1475 | const char *value) /* I - Value */ | |
1476 | { | |
1477 | ssize_t bytes, /* Number of bytes written */ | |
1478 | temp; /* Temporary byte count */ | |
1479 | const char *ptr; /* Pointer into value */ | |
1480 | ||
1481 | ||
1482 | if (!fp || !directive || !*directive) | |
1483 | return (-1); | |
1484 | ||
1485 | if ((bytes = cupsFilePuts(fp, directive)) < 0) | |
1486 | return (-1); | |
1487 | ||
1488 | if (cupsFilePutChar(fp, ' ') < 0) | |
1489 | return (-1); | |
1490 | bytes ++; | |
1491 | ||
1492 | if (value && *value) | |
1493 | { | |
1494 | if ((ptr = strchr(value, '#')) != NULL) | |
1495 | { | |
1496 | /* | |
1497 | * Need to quote the first # in the info string... | |
1498 | */ | |
1499 | ||
1500 | if ((temp = cupsFileWrite(fp, value, ptr - value)) < 0) | |
1501 | return (-1); | |
1502 | bytes += temp; | |
1503 | ||
1504 | if (cupsFilePutChar(fp, '\\') < 0) | |
1505 | return (-1); | |
1506 | bytes ++; | |
1507 | ||
1508 | if ((temp = cupsFilePuts(fp, ptr)) < 0) | |
1509 | return (-1); | |
1510 | bytes += temp; | |
1511 | } | |
1512 | else if ((temp = cupsFilePuts(fp, value)) < 0) | |
1513 | return (-1); | |
1514 | else | |
1515 | bytes += temp; | |
1516 | } | |
1517 | ||
1518 | if (cupsFilePutChar(fp, '\n') < 0) | |
1519 | return (-1); | |
1520 | else | |
1521 | return (bytes + 1); | |
1522 | } | |
1523 | ||
1524 | ||
ef416fc2 | 1525 | /* |
1526 | * 'cupsFilePuts()' - Write a string. | |
5a738aea MS |
1527 | * |
1528 | * Like the @code fputs@ function, no newline is appended to the string. | |
1529 | * | |
426c6a59 | 1530 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1531 | */ |
1532 | ||
5a738aea | 1533 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1534 | cupsFilePuts(cups_file_t *fp, /* I - CUPS file */ |
1535 | const char *s) /* I - String to write */ | |
1536 | { | |
2abf387c | 1537 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 1538 | |
1539 | ||
1540 | /* | |
1541 | * Range check input... | |
1542 | */ | |
1543 | ||
1544 | if (!fp || !s || (fp->mode != 'w' && fp->mode != 's')) | |
1545 | return (-1); | |
1546 | ||
1547 | /* | |
1548 | * Write the string... | |
1549 | */ | |
1550 | ||
b86bc4cf | 1551 | bytes = (int)strlen(s); |
ef416fc2 | 1552 | |
1553 | if (fp->mode == 's') | |
1554 | { | |
1555 | if (cups_write(fp, s, bytes) < 0) | |
1556 | return (-1); | |
1557 | ||
1558 | fp->pos += bytes; | |
1559 | ||
e07d4801 | 1560 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1561 | |
ef416fc2 | 1562 | return (bytes); |
1563 | } | |
1564 | ||
1565 | if ((fp->ptr + bytes) > fp->end) | |
1566 | if (cupsFileFlush(fp)) | |
1567 | return (-1); | |
1568 | ||
1569 | fp->pos += bytes; | |
1570 | ||
e07d4801 | 1571 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1572 | |
ef416fc2 | 1573 | if (bytes > sizeof(fp->buf)) |
1574 | { | |
1575 | #ifdef HAVE_LIBZ | |
1576 | if (fp->compressed) | |
1577 | return (cups_compress(fp, s, bytes)); | |
1578 | else | |
1579 | #endif /* HAVE_LIBZ */ | |
1580 | return (cups_write(fp, s, bytes)); | |
1581 | } | |
1582 | else | |
1583 | { | |
1584 | memcpy(fp->ptr, s, bytes); | |
1585 | fp->ptr += bytes; | |
1586 | return (bytes); | |
1587 | } | |
1588 | } | |
1589 | ||
1590 | ||
1591 | /* | |
1592 | * 'cupsFileRead()' - Read from a file. | |
5a738aea | 1593 | * |
426c6a59 | 1594 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1595 | */ |
1596 | ||
5a738aea | 1597 | ssize_t /* O - Number of bytes read or -1 on error */ |
ef416fc2 | 1598 | cupsFileRead(cups_file_t *fp, /* I - CUPS file */ |
1599 | char *buf, /* O - Buffer */ | |
1600 | size_t bytes) /* I - Number of bytes to read */ | |
1601 | { | |
2abf387c | 1602 | size_t total; /* Total bytes read */ |
1603 | ssize_t count; /* Bytes read */ | |
ef416fc2 | 1604 | |
1605 | ||
e07d4801 | 1606 | DEBUG_printf(("2cupsFileRead(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 1607 | CUPS_LLCAST bytes)); |
ef416fc2 | 1608 | |
1609 | /* | |
1610 | * Range check input... | |
1611 | */ | |
1612 | ||
82f97232 | 1613 | if (!fp || !buf || (fp->mode != 'r' && fp->mode != 's')) |
ef416fc2 | 1614 | return (-1); |
1615 | ||
1616 | if (bytes == 0) | |
1617 | return (0); | |
1618 | ||
1619 | /* | |
1620 | * Loop until all bytes are read... | |
1621 | */ | |
1622 | ||
1623 | total = 0; | |
1624 | while (bytes > 0) | |
1625 | { | |
1626 | if (fp->ptr >= fp->end) | |
1627 | if (cups_fill(fp) <= 0) | |
1628 | { | |
e07d4801 MS |
1629 | DEBUG_printf(("4cupsFileRead: cups_fill() returned -1, total=" |
1630 | CUPS_LLFMT, CUPS_LLCAST total)); | |
ef416fc2 | 1631 | |
1632 | if (total > 0) | |
b86bc4cf | 1633 | return ((ssize_t)total); |
ef416fc2 | 1634 | else |
1635 | return (-1); | |
1636 | } | |
1637 | ||
b86bc4cf | 1638 | count = (ssize_t)(fp->end - fp->ptr); |
1639 | if (count > (ssize_t)bytes) | |
1640 | count = (ssize_t)bytes; | |
ef416fc2 | 1641 | |
1642 | memcpy(buf, fp->ptr, count); | |
1643 | fp->ptr += count; | |
634763e8 MS |
1644 | fp->pos += count; |
1645 | ||
e07d4801 | 1646 | DEBUG_printf(("4cupsFileRead: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1647 | |
1648 | /* | |
1649 | * Update the counts for the last read... | |
1650 | */ | |
1651 | ||
1652 | bytes -= count; | |
1653 | total += count; | |
1654 | buf += count; | |
1655 | } | |
1656 | ||
1657 | /* | |
1658 | * Return the total number of bytes read... | |
1659 | */ | |
1660 | ||
e07d4801 | 1661 | DEBUG_printf(("3cupsFileRead: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
ef416fc2 | 1662 | |
b86bc4cf | 1663 | return ((ssize_t)total); |
ef416fc2 | 1664 | } |
1665 | ||
1666 | ||
1667 | /* | |
5a738aea MS |
1668 | * 'cupsFileRewind()' - Set the current file position to the beginning of the |
1669 | * file. | |
1670 | * | |
426c6a59 | 1671 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1672 | */ |
1673 | ||
5a738aea | 1674 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1675 | cupsFileRewind(cups_file_t *fp) /* I - CUPS file */ |
1676 | { | |
80ca4592 | 1677 | /* |
1678 | * Range check input... | |
1679 | */ | |
1680 | ||
e07d4801 MS |
1681 | DEBUG_printf(("cupsFileRewind(fp=%p)", fp)); |
1682 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); | |
634763e8 | 1683 | |
80ca4592 | 1684 | if (!fp || fp->mode != 'r') |
1685 | return (-1); | |
1686 | ||
1687 | /* | |
1688 | * Handle special cases... | |
1689 | */ | |
1690 | ||
634763e8 | 1691 | if (fp->bufpos == 0) |
80ca4592 | 1692 | { |
1693 | /* | |
1694 | * No seeking necessary... | |
1695 | */ | |
1696 | ||
634763e8 MS |
1697 | fp->pos = 0; |
1698 | ||
80ca4592 | 1699 | if (fp->ptr) |
1700 | { | |
1701 | fp->ptr = fp->buf; | |
1702 | fp->eof = 0; | |
1703 | } | |
1704 | ||
e07d4801 | 1705 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1706 | |
80ca4592 | 1707 | return (0); |
1708 | } | |
1709 | ||
1710 | /* | |
1711 | * Otherwise, seek in the file and cleanup any compression buffers... | |
1712 | */ | |
1713 | ||
1714 | #ifdef HAVE_LIBZ | |
1715 | if (fp->compressed) | |
1716 | { | |
1717 | inflateEnd(&fp->stream); | |
1718 | fp->compressed = 0; | |
1719 | } | |
1720 | #endif /* HAVE_LIBZ */ | |
1721 | ||
c9fc04c6 MS |
1722 | if (lseek(fp->fd, 0, SEEK_SET)) |
1723 | { | |
e07d4801 | 1724 | DEBUG_printf(("1cupsFileRewind: lseek failed: %s", strerror(errno))); |
c9fc04c6 MS |
1725 | return (-1); |
1726 | } | |
80ca4592 | 1727 | |
634763e8 MS |
1728 | fp->bufpos = 0; |
1729 | fp->pos = 0; | |
1730 | fp->ptr = NULL; | |
1731 | fp->end = NULL; | |
1732 | fp->eof = 0; | |
1733 | ||
e07d4801 | 1734 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
80ca4592 | 1735 | |
1736 | return (0); | |
ef416fc2 | 1737 | } |
1738 | ||
1739 | ||
1740 | /* | |
1741 | * 'cupsFileSeek()' - Seek in a file. | |
5a738aea | 1742 | * |
426c6a59 | 1743 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1744 | */ |
1745 | ||
5a738aea | 1746 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1747 | cupsFileSeek(cups_file_t *fp, /* I - CUPS file */ |
1748 | off_t pos) /* I - Position in file */ | |
1749 | { | |
2abf387c | 1750 | ssize_t bytes; /* Number bytes in buffer */ |
ef416fc2 | 1751 | |
1752 | ||
e07d4801 | 1753 | DEBUG_printf(("cupsFileSeek(fp=%p, pos=" CUPS_LLFMT ")", fp, |
634763e8 | 1754 | CUPS_LLCAST pos)); |
e07d4801 MS |
1755 | DEBUG_printf(("2cupsFileSeek: fp->pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
1756 | DEBUG_printf(("2cupsFileSeek: fp->ptr=%p, fp->end=%p", fp->ptr, fp->end)); | |
ef416fc2 | 1757 | |
1758 | /* | |
1759 | * Range check input... | |
1760 | */ | |
1761 | ||
1762 | if (!fp || pos < 0 || fp->mode != 'r') | |
1763 | return (-1); | |
1764 | ||
80ca4592 | 1765 | /* |
1766 | * Handle special cases... | |
1767 | */ | |
1768 | ||
1769 | if (pos == 0) | |
1770 | return (cupsFileRewind(fp)); | |
1771 | ||
634763e8 | 1772 | if (fp->ptr) |
b423cd4c | 1773 | { |
634763e8 | 1774 | bytes = (ssize_t)(fp->end - fp->buf); |
b423cd4c | 1775 | |
e07d4801 | 1776 | DEBUG_printf(("2cupsFileSeek: bytes=" CUPS_LLFMT, CUPS_LLCAST bytes)); |
c168a833 | 1777 | |
634763e8 | 1778 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
b423cd4c | 1779 | { |
634763e8 MS |
1780 | /* |
1781 | * No seeking necessary... | |
1782 | */ | |
1783 | ||
1784 | fp->pos = pos; | |
1785 | fp->ptr = fp->buf + pos - fp->bufpos; | |
b423cd4c | 1786 | fp->eof = 0; |
b423cd4c | 1787 | |
634763e8 MS |
1788 | return (pos); |
1789 | } | |
b423cd4c | 1790 | } |
1791 | ||
80ca4592 | 1792 | #ifdef HAVE_LIBZ |
1793 | if (!fp->compressed && !fp->ptr) | |
1794 | { | |
1795 | /* | |
1796 | * Preload a buffer to determine whether the file is compressed... | |
1797 | */ | |
1798 | ||
1799 | if (cups_fill(fp) < 0) | |
1800 | return (-1); | |
1801 | } | |
1802 | #endif /* HAVE_LIBZ */ | |
1803 | ||
ef416fc2 | 1804 | /* |
634763e8 | 1805 | * Seek forwards or backwards... |
ef416fc2 | 1806 | */ |
1807 | ||
ef416fc2 | 1808 | fp->eof = 0; |
1809 | ||
634763e8 | 1810 | if (pos < fp->bufpos) |
ef416fc2 | 1811 | { |
1812 | /* | |
1813 | * Need to seek backwards... | |
1814 | */ | |
1815 | ||
e07d4801 | 1816 | DEBUG_puts("2cupsFileSeek: SEEK BACKWARDS"); |
80ca4592 | 1817 | |
ef416fc2 | 1818 | #ifdef HAVE_LIBZ |
1819 | if (fp->compressed) | |
1820 | { | |
1821 | inflateEnd(&fp->stream); | |
1822 | ||
1823 | lseek(fp->fd, 0, SEEK_SET); | |
634763e8 MS |
1824 | fp->bufpos = 0; |
1825 | fp->pos = 0; | |
1826 | fp->ptr = NULL; | |
1827 | fp->end = NULL; | |
ef416fc2 | 1828 | |
1829 | while ((bytes = cups_fill(fp)) > 0) | |
634763e8 | 1830 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1831 | break; |
1832 | ||
1833 | if (bytes <= 0) | |
1834 | return (-1); | |
80ca4592 | 1835 | |
634763e8 MS |
1836 | fp->ptr = fp->buf + pos - fp->bufpos; |
1837 | fp->pos = pos; | |
ef416fc2 | 1838 | } |
1839 | else | |
1840 | #endif /* HAVE_LIBZ */ | |
1841 | { | |
634763e8 MS |
1842 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1843 | fp->pos = fp->bufpos; | |
1844 | fp->ptr = NULL; | |
1845 | fp->end = NULL; | |
80ca4592 | 1846 | |
e07d4801 | 1847 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1848 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1849 | } |
1850 | } | |
634763e8 | 1851 | else |
ef416fc2 | 1852 | { |
1853 | /* | |
1854 | * Need to seek forwards... | |
1855 | */ | |
1856 | ||
e07d4801 | 1857 | DEBUG_puts("2cupsFileSeek: SEEK FORWARDS"); |
80ca4592 | 1858 | |
ef416fc2 | 1859 | #ifdef HAVE_LIBZ |
80ca4592 | 1860 | if (fp->compressed) |
ef416fc2 | 1861 | { |
1862 | while ((bytes = cups_fill(fp)) > 0) | |
80ca4592 | 1863 | { |
634763e8 | 1864 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1865 | break; |
80ca4592 | 1866 | } |
ef416fc2 | 1867 | |
1868 | if (bytes <= 0) | |
1869 | return (-1); | |
80ca4592 | 1870 | |
634763e8 MS |
1871 | fp->ptr = fp->buf + pos - fp->bufpos; |
1872 | fp->pos = pos; | |
ef416fc2 | 1873 | } |
1874 | else | |
1875 | #endif /* HAVE_LIBZ */ | |
1876 | { | |
634763e8 MS |
1877 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1878 | fp->pos = fp->bufpos; | |
1879 | fp->ptr = NULL; | |
1880 | fp->end = NULL; | |
80ca4592 | 1881 | |
e07d4801 | 1882 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1883 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1884 | } |
1885 | } | |
ef416fc2 | 1886 | |
e07d4801 | 1887 | DEBUG_printf(("2cupsFileSeek: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1888 | |
1889 | return (fp->pos); | |
1890 | } | |
1891 | ||
1892 | ||
80ca4592 | 1893 | /* |
1894 | * 'cupsFileStderr()' - Return a CUPS file associated with stderr. | |
5a738aea | 1895 | * |
426c6a59 | 1896 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 1897 | */ |
1898 | ||
5a738aea | 1899 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1900 | cupsFileStderr(void) |
1901 | { | |
1902 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1903 | ||
1904 | ||
1905 | /* | |
1906 | * Open file descriptor 2 as needed... | |
1907 | */ | |
1908 | ||
1909 | if (!cg->stdio_files[2]) | |
1910 | { | |
1911 | /* | |
1912 | * Flush any pending output on the stdio file... | |
1913 | */ | |
1914 | ||
1915 | fflush(stderr); | |
1916 | ||
1917 | /* | |
1918 | * Open file descriptor 2... | |
1919 | */ | |
1920 | ||
1921 | if ((cg->stdio_files[2] = cupsFileOpenFd(2, "w")) != NULL) | |
1922 | cg->stdio_files[2]->is_stdio = 1; | |
1923 | } | |
1924 | ||
1925 | return (cg->stdio_files[2]); | |
1926 | } | |
1927 | ||
1928 | ||
1929 | /* | |
1930 | * 'cupsFileStdin()' - Return a CUPS file associated with stdin. | |
5a738aea | 1931 | * |
426c6a59 | 1932 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 1933 | */ |
1934 | ||
5a738aea | 1935 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1936 | cupsFileStdin(void) |
1937 | { | |
1938 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1939 | ||
1940 | ||
1941 | /* | |
1942 | * Open file descriptor 0 as needed... | |
1943 | */ | |
1944 | ||
1945 | if (!cg->stdio_files[0]) | |
1946 | { | |
1947 | /* | |
1948 | * Open file descriptor 0... | |
1949 | */ | |
1950 | ||
1951 | if ((cg->stdio_files[0] = cupsFileOpenFd(0, "r")) != NULL) | |
1952 | cg->stdio_files[0]->is_stdio = 1; | |
1953 | } | |
1954 | ||
1955 | return (cg->stdio_files[0]); | |
1956 | } | |
1957 | ||
1958 | ||
1959 | /* | |
1960 | * 'cupsFileStdout()' - Return a CUPS file associated with stdout. | |
5a738aea | 1961 | * |
426c6a59 | 1962 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 1963 | */ |
1964 | ||
5a738aea | 1965 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1966 | cupsFileStdout(void) |
1967 | { | |
1968 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1969 | ||
1970 | ||
1971 | /* | |
1972 | * Open file descriptor 1 as needed... | |
1973 | */ | |
1974 | ||
1975 | if (!cg->stdio_files[1]) | |
1976 | { | |
1977 | /* | |
1978 | * Flush any pending output on the stdio file... | |
1979 | */ | |
1980 | ||
1981 | fflush(stdout); | |
1982 | ||
1983 | /* | |
1984 | * Open file descriptor 1... | |
1985 | */ | |
1986 | ||
1987 | if ((cg->stdio_files[1] = cupsFileOpenFd(1, "w")) != NULL) | |
1988 | cg->stdio_files[1]->is_stdio = 1; | |
1989 | } | |
1990 | ||
1991 | return (cg->stdio_files[1]); | |
1992 | } | |
1993 | ||
1994 | ||
ef416fc2 | 1995 | /* |
1996 | * 'cupsFileTell()' - Return the current file position. | |
5a738aea | 1997 | * |
426c6a59 | 1998 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1999 | */ |
2000 | ||
2001 | off_t /* O - File position */ | |
2002 | cupsFileTell(cups_file_t *fp) /* I - CUPS file */ | |
2003 | { | |
e07d4801 MS |
2004 | DEBUG_printf(("2cupsFileTell(fp=%p)", fp)); |
2005 | DEBUG_printf(("3cupsFileTell: pos=" CUPS_LLFMT, | |
2006 | CUPS_LLCAST (fp ? fp->pos : -1))); | |
634763e8 | 2007 | |
80ca4592 | 2008 | return (fp ? fp->pos : 0); |
ef416fc2 | 2009 | } |
2010 | ||
2011 | ||
2012 | /* | |
2013 | * 'cupsFileUnlock()' - Unlock access to a file. | |
5a738aea | 2014 | * |
426c6a59 | 2015 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 2016 | */ |
2017 | ||
2018 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 2019 | cupsFileUnlock(cups_file_t *fp) /* I - CUPS file */ |
ef416fc2 | 2020 | { |
2021 | /* | |
2022 | * Range check... | |
2023 | */ | |
2024 | ||
e07d4801 | 2025 | DEBUG_printf(("cupsFileUnlock(fp=%p)", fp)); |
634763e8 | 2026 | |
ef416fc2 | 2027 | if (!fp || fp->mode == 's') |
2028 | return (-1); | |
2029 | ||
2030 | /* | |
2031 | * Unlock... | |
2032 | */ | |
2033 | ||
2034 | #ifdef WIN32 | |
536bc2c6 | 2035 | return (_locking(fp->fd, _LK_UNLCK, 0)); |
ef416fc2 | 2036 | #else |
2037 | return (lockf(fp->fd, F_ULOCK, 0)); | |
2038 | #endif /* WIN32 */ | |
2039 | } | |
2040 | ||
2041 | ||
2042 | /* | |
2043 | * 'cupsFileWrite()' - Write to a file. | |
5a738aea | 2044 | * |
426c6a59 | 2045 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 2046 | */ |
2047 | ||
5a738aea | 2048 | ssize_t /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 2049 | cupsFileWrite(cups_file_t *fp, /* I - CUPS file */ |
2050 | const char *buf, /* I - Buffer */ | |
2051 | size_t bytes) /* I - Number of bytes to write */ | |
2052 | { | |
2053 | /* | |
2054 | * Range check input... | |
2055 | */ | |
2056 | ||
e07d4801 | 2057 | DEBUG_printf(("2cupsFileWrite(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", |
634763e8 MS |
2058 | fp, buf, CUPS_LLCAST bytes)); |
2059 | ||
82f97232 | 2060 | if (!fp || !buf || (fp->mode != 'w' && fp->mode != 's')) |
ef416fc2 | 2061 | return (-1); |
2062 | ||
2063 | if (bytes == 0) | |
2064 | return (0); | |
2065 | ||
2066 | /* | |
2067 | * Write the buffer... | |
2068 | */ | |
2069 | ||
2070 | if (fp->mode == 's') | |
2071 | { | |
2072 | if (cups_write(fp, buf, bytes) < 0) | |
2073 | return (-1); | |
2074 | ||
b86bc4cf | 2075 | fp->pos += (off_t)bytes; |
ef416fc2 | 2076 | |
e07d4801 | 2077 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2078 | |
b86bc4cf | 2079 | return ((ssize_t)bytes); |
ef416fc2 | 2080 | } |
2081 | ||
2082 | if ((fp->ptr + bytes) > fp->end) | |
2083 | if (cupsFileFlush(fp)) | |
2084 | return (-1); | |
2085 | ||
b86bc4cf | 2086 | fp->pos += (off_t)bytes; |
ef416fc2 | 2087 | |
e07d4801 | 2088 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2089 | |
ef416fc2 | 2090 | if (bytes > sizeof(fp->buf)) |
2091 | { | |
2092 | #ifdef HAVE_LIBZ | |
2093 | if (fp->compressed) | |
2094 | return (cups_compress(fp, buf, bytes)); | |
2095 | else | |
2096 | #endif /* HAVE_LIBZ */ | |
2097 | return (cups_write(fp, buf, bytes)); | |
2098 | } | |
2099 | else | |
2100 | { | |
2101 | memcpy(fp->ptr, buf, bytes); | |
2102 | fp->ptr += bytes; | |
b86bc4cf | 2103 | return ((ssize_t)bytes); |
ef416fc2 | 2104 | } |
2105 | } | |
2106 | ||
2107 | ||
2108 | #ifdef HAVE_LIBZ | |
2109 | /* | |
22c9029b | 2110 | * 'cups_compress()' - Compress a buffer of data. |
ef416fc2 | 2111 | */ |
2112 | ||
2113 | static ssize_t /* O - Number of bytes written or -1 */ | |
2114 | cups_compress(cups_file_t *fp, /* I - CUPS file */ | |
2115 | const char *buf, /* I - Buffer */ | |
2116 | size_t bytes) /* I - Number bytes */ | |
2117 | { | |
e07d4801 | 2118 | DEBUG_printf(("7cups_compress(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2119 | CUPS_LLCAST bytes)); |
ecdc0628 | 2120 | |
ef416fc2 | 2121 | /* |
2122 | * Update the CRC... | |
2123 | */ | |
2124 | ||
2125 | fp->crc = crc32(fp->crc, (const Bytef *)buf, bytes); | |
2126 | ||
2127 | /* | |
2128 | * Deflate the bytes... | |
2129 | */ | |
2130 | ||
2131 | fp->stream.next_in = (Bytef *)buf; | |
2132 | fp->stream.avail_in = bytes; | |
2133 | ||
2134 | while (fp->stream.avail_in > 0) | |
2135 | { | |
2136 | /* | |
2137 | * Flush the current buffer... | |
2138 | */ | |
2139 | ||
e07d4801 | 2140 | DEBUG_printf(("9cups_compress: avail_in=%d, avail_out=%d", |
634763e8 | 2141 | fp->stream.avail_in, fp->stream.avail_out)); |
ecdc0628 | 2142 | |
ef416fc2 | 2143 | if (fp->stream.avail_out < (int)(sizeof(fp->cbuf) / 8)) |
2144 | { | |
2145 | if (cups_write(fp, (char *)fp->cbuf, fp->stream.next_out - fp->cbuf) < 0) | |
2146 | return (-1); | |
ecdc0628 | 2147 | |
2148 | fp->stream.next_out = fp->cbuf; | |
2149 | fp->stream.avail_out = sizeof(fp->cbuf); | |
ef416fc2 | 2150 | } |
2151 | ||
2152 | deflate(&(fp->stream), Z_NO_FLUSH); | |
2153 | } | |
2154 | ||
2155 | return (bytes); | |
2156 | } | |
2157 | #endif /* HAVE_LIBZ */ | |
2158 | ||
2159 | ||
2160 | /* | |
22c9029b | 2161 | * 'cups_fill()' - Fill the input buffer. |
ef416fc2 | 2162 | */ |
2163 | ||
2164 | static ssize_t /* O - Number of bytes or -1 */ | |
2165 | cups_fill(cups_file_t *fp) /* I - CUPS file */ | |
2166 | { | |
2167 | ssize_t bytes; /* Number of bytes read */ | |
2168 | #ifdef HAVE_LIBZ | |
c277e2f8 | 2169 | int status; /* Decompression status */ |
ef416fc2 | 2170 | const unsigned char *ptr, /* Pointer into buffer */ |
2171 | *end; /* End of buffer */ | |
2172 | #endif /* HAVE_LIBZ */ | |
2173 | ||
2174 | ||
e07d4801 MS |
2175 | DEBUG_printf(("7cups_fill(fp=%p)", fp)); |
2176 | DEBUG_printf(("9cups_fill: fp->ptr=%p, fp->end=%p, fp->buf=%p, " | |
2177 | "fp->bufpos=" CUPS_LLFMT ", fp->eof=%d", | |
634763e8 | 2178 | fp->ptr, fp->end, fp->buf, CUPS_LLCAST fp->bufpos, fp->eof)); |
ef416fc2 | 2179 | |
2180 | if (fp->ptr && fp->end) | |
c9fc04c6 | 2181 | fp->bufpos += fp->end - fp->buf; |
ef416fc2 | 2182 | |
2183 | #ifdef HAVE_LIBZ | |
e07d4801 | 2184 | DEBUG_printf(("9cups_fill: fp->compressed=%d", fp->compressed)); |
b423cd4c | 2185 | |
ef416fc2 | 2186 | while (!fp->ptr || fp->compressed) |
2187 | { | |
2188 | /* | |
2189 | * Check to see if we have read any data yet; if not, see if we have a | |
2190 | * compressed file... | |
2191 | */ | |
2192 | ||
2193 | if (!fp->ptr) | |
2194 | { | |
2195 | /* | |
2196 | * Reset the file position in case we are seeking... | |
2197 | */ | |
2198 | ||
2199 | fp->compressed = 0; | |
ef416fc2 | 2200 | |
2201 | /* | |
2202 | * Read the first bytes in the file to determine if we have a gzip'd | |
2203 | * file... | |
2204 | */ | |
2205 | ||
fa73b229 | 2206 | if ((bytes = cups_read(fp, (char *)fp->buf, sizeof(fp->buf))) < 0) |
ef416fc2 | 2207 | { |
2208 | /* | |
2209 | * Can't read from file! | |
2210 | */ | |
2211 | ||
e07d4801 | 2212 | DEBUG_printf(("9cups_fill: cups_read() returned " CUPS_LLFMT, |
b423cd4c | 2213 | CUPS_LLCAST bytes)); |
2214 | ||
ef416fc2 | 2215 | return (-1); |
2216 | } | |
2217 | ||
fa73b229 | 2218 | if (bytes < 10 || fp->buf[0] != 0x1f || |
e00b005a | 2219 | (fp->buf[1] & 255) != 0x8b || |
fa73b229 | 2220 | fp->buf[2] != 8 || (fp->buf[3] & 0xe0) != 0) |
ef416fc2 | 2221 | { |
2222 | /* | |
2223 | * Not a gzip'd file! | |
2224 | */ | |
2225 | ||
ef416fc2 | 2226 | fp->ptr = fp->buf; |
2227 | fp->end = fp->buf + bytes; | |
2228 | ||
e07d4801 | 2229 | DEBUG_printf(("9cups_fill: Returning " CUPS_LLFMT, |
c9fc04c6 | 2230 | CUPS_LLCAST bytes)); |
b423cd4c | 2231 | |
ef416fc2 | 2232 | return (bytes); |
2233 | } | |
2234 | ||
2235 | /* | |
2236 | * Parse header junk: extra data, original name, and comment... | |
2237 | */ | |
2238 | ||
fa73b229 | 2239 | ptr = (unsigned char *)fp->buf + 10; |
2240 | end = (unsigned char *)fp->buf + bytes; | |
ef416fc2 | 2241 | |
fa73b229 | 2242 | if (fp->buf[3] & 0x04) |
ef416fc2 | 2243 | { |
2244 | /* | |
2245 | * Skip extra data... | |
2246 | */ | |
2247 | ||
2248 | if ((ptr + 2) > end) | |
2249 | { | |
2250 | /* | |
2251 | * Can't read from file! | |
2252 | */ | |
2253 | ||
2254 | return (-1); | |
2255 | } | |
2256 | ||
2257 | bytes = ((unsigned char)ptr[1] << 8) | (unsigned char)ptr[0]; | |
2258 | ptr += 2 + bytes; | |
2259 | ||
2260 | if (ptr > end) | |
2261 | { | |
2262 | /* | |
2263 | * Can't read from file! | |
2264 | */ | |
2265 | ||
2266 | return (-1); | |
2267 | } | |
2268 | } | |
2269 | ||
fa73b229 | 2270 | if (fp->buf[3] & 0x08) |
ef416fc2 | 2271 | { |
2272 | /* | |
2273 | * Skip original name data... | |
2274 | */ | |
2275 | ||
2276 | while (ptr < end && *ptr) | |
2277 | ptr ++; | |
2278 | ||
2279 | if (ptr < end) | |
2280 | ptr ++; | |
2281 | else | |
2282 | { | |
2283 | /* | |
2284 | * Can't read from file! | |
2285 | */ | |
2286 | ||
2287 | return (-1); | |
2288 | } | |
2289 | } | |
2290 | ||
fa73b229 | 2291 | if (fp->buf[3] & 0x10) |
ef416fc2 | 2292 | { |
2293 | /* | |
2294 | * Skip comment data... | |
2295 | */ | |
2296 | ||
2297 | while (ptr < end && *ptr) | |
2298 | ptr ++; | |
2299 | ||
2300 | if (ptr < end) | |
2301 | ptr ++; | |
2302 | else | |
2303 | { | |
2304 | /* | |
2305 | * Can't read from file! | |
2306 | */ | |
2307 | ||
2308 | return (-1); | |
2309 | } | |
2310 | } | |
2311 | ||
fa73b229 | 2312 | if (fp->buf[3] & 0x02) |
ef416fc2 | 2313 | { |
2314 | /* | |
2315 | * Skip header CRC data... | |
2316 | */ | |
2317 | ||
2318 | ptr += 2; | |
2319 | ||
2320 | if (ptr > end) | |
2321 | { | |
2322 | /* | |
2323 | * Can't read from file! | |
2324 | */ | |
2325 | ||
2326 | return (-1); | |
2327 | } | |
2328 | } | |
2329 | ||
fa73b229 | 2330 | /* |
2331 | * Copy the flate-compressed data to the compression buffer... | |
2332 | */ | |
2333 | ||
2334 | if ((bytes = end - ptr) > 0) | |
2335 | memcpy(fp->cbuf, ptr, bytes); | |
2336 | ||
ef416fc2 | 2337 | /* |
2338 | * Setup the decompressor data... | |
2339 | */ | |
2340 | ||
2341 | fp->stream.zalloc = (alloc_func)0; | |
2342 | fp->stream.zfree = (free_func)0; | |
2343 | fp->stream.opaque = (voidpf)0; | |
fa73b229 | 2344 | fp->stream.next_in = (Bytef *)fp->cbuf; |
ef416fc2 | 2345 | fp->stream.next_out = NULL; |
fa73b229 | 2346 | fp->stream.avail_in = bytes; |
ef416fc2 | 2347 | fp->stream.avail_out = 0; |
2348 | fp->crc = crc32(0L, Z_NULL, 0); | |
2349 | ||
2350 | if (inflateInit2(&(fp->stream), -15) != Z_OK) | |
2351 | return (-1); | |
2352 | ||
2353 | fp->compressed = 1; | |
2354 | } | |
2355 | ||
2356 | if (fp->compressed) | |
2357 | { | |
2358 | /* | |
2359 | * If we have reached end-of-file, return immediately... | |
2360 | */ | |
2361 | ||
2362 | if (fp->eof) | |
2363 | return (-1); | |
2364 | ||
2365 | /* | |
2366 | * Fill the decompression buffer as needed... | |
2367 | */ | |
2368 | ||
2369 | if (fp->stream.avail_in == 0) | |
2370 | { | |
2371 | if ((bytes = cups_read(fp, (char *)fp->cbuf, sizeof(fp->cbuf))) <= 0) | |
2372 | return (-1); | |
2373 | ||
2374 | fp->stream.next_in = fp->cbuf; | |
2375 | fp->stream.avail_in = bytes; | |
2376 | } | |
2377 | ||
2378 | /* | |
2379 | * Decompress data from the buffer... | |
2380 | */ | |
2381 | ||
2382 | fp->stream.next_out = (Bytef *)fp->buf; | |
2383 | fp->stream.avail_out = sizeof(fp->buf); | |
2384 | ||
c277e2f8 MS |
2385 | status = inflate(&(fp->stream), Z_NO_FLUSH); |
2386 | ||
2387 | if (fp->stream.next_out > (Bytef *)fp->buf) | |
2388 | fp->crc = crc32(fp->crc, (Bytef *)fp->buf, | |
2389 | fp->stream.next_out - (Bytef *)fp->buf); | |
2390 | ||
2391 | if (status == Z_STREAM_END) | |
ef416fc2 | 2392 | { |
2393 | /* | |
2394 | * Read the CRC and length... | |
2395 | */ | |
2396 | ||
2397 | unsigned char trailer[8]; /* Trailer bytes */ | |
2398 | uLong tcrc; /* Trailer CRC */ | |
2399 | ||
2400 | ||
2401 | if (read(fp->fd, trailer, sizeof(trailer)) < sizeof(trailer)) | |
2402 | { | |
2403 | /* | |
2404 | * Can't get it, so mark end-of-file... | |
2405 | */ | |
2406 | ||
2407 | fp->eof = 1; | |
ef416fc2 | 2408 | } |
fa73b229 | 2409 | else |
2410 | { | |
2411 | tcrc = (((((trailer[3] << 8) | trailer[2]) << 8) | trailer[1]) << 8) | | |
2412 | trailer[0]; | |
ef416fc2 | 2413 | |
fa73b229 | 2414 | if (tcrc != fp->crc) |
2415 | { | |
2416 | /* | |
2417 | * Bad CRC, mark end-of-file... | |
2418 | */ | |
2419 | ||
e07d4801 | 2420 | DEBUG_printf(("9cups_fill: tcrc=%08x, fp->crc=%08x", |
c277e2f8 MS |
2421 | (unsigned int)tcrc, (unsigned int)fp->crc)); |
2422 | ||
fa73b229 | 2423 | fp->eof = 1; |
2424 | ||
2425 | return (-1); | |
2426 | } | |
ef416fc2 | 2427 | |
ef416fc2 | 2428 | /* |
fa73b229 | 2429 | * Otherwise, reset the compressed flag so that we re-read the |
2430 | * file header... | |
ef416fc2 | 2431 | */ |
ef416fc2 | 2432 | |
fa73b229 | 2433 | fp->compressed = 0; |
ef416fc2 | 2434 | } |
ef416fc2 | 2435 | } |
2436 | ||
2437 | bytes = sizeof(fp->buf) - fp->stream.avail_out; | |
2438 | ||
2439 | /* | |
2440 | * Return the decompressed data... | |
2441 | */ | |
2442 | ||
2443 | fp->ptr = fp->buf; | |
2444 | fp->end = fp->buf + bytes; | |
2445 | ||
fa73b229 | 2446 | if (bytes) |
2447 | return (bytes); | |
ef416fc2 | 2448 | } |
2449 | } | |
2450 | #endif /* HAVE_LIBZ */ | |
2451 | ||
2452 | /* | |
2453 | * Read a buffer's full of data... | |
2454 | */ | |
2455 | ||
2456 | if ((bytes = cups_read(fp, fp->buf, sizeof(fp->buf))) <= 0) | |
2457 | { | |
2458 | /* | |
2459 | * Can't read from file! | |
2460 | */ | |
2461 | ||
2462 | fp->eof = 1; | |
2463 | fp->ptr = fp->buf; | |
2464 | fp->end = fp->buf; | |
2465 | ||
2466 | return (-1); | |
2467 | } | |
2468 | ||
2469 | /* | |
2470 | * Return the bytes we read... | |
2471 | */ | |
2472 | ||
2473 | fp->eof = 0; | |
2474 | fp->ptr = fp->buf; | |
2475 | fp->end = fp->buf + bytes; | |
2476 | ||
2477 | return (bytes); | |
2478 | } | |
2479 | ||
2480 | ||
c7017ecc MS |
2481 | /* |
2482 | * 'cups_open()' - Safely open a file for writing. | |
2483 | * | |
2484 | * We don't allow appending to directories or files that are hard-linked or | |
2485 | * symlinked. | |
2486 | */ | |
2487 | ||
2488 | static int /* O - File descriptor or -1 otherwise */ | |
2489 | cups_open(const char *filename, /* I - Filename */ | |
2490 | int mode) /* I - Open mode */ | |
2491 | { | |
2492 | int fd; /* File descriptor */ | |
2493 | struct stat fileinfo; /* File information */ | |
2494 | #ifndef WIN32 | |
2495 | struct stat linkinfo; /* Link information */ | |
2496 | #endif /* !WIN32 */ | |
2497 | ||
2498 | ||
2499 | /* | |
2500 | * Open the file... | |
2501 | */ | |
2502 | ||
2503 | if ((fd = open(filename, mode, 0666)) < 0) | |
2504 | return (-1); | |
2505 | ||
2506 | /* | |
2507 | * Then verify that the file descriptor doesn't point to a directory or hard- | |
2508 | * linked file. | |
2509 | */ | |
2510 | ||
2511 | if (fstat(fd, &fileinfo)) | |
2512 | { | |
2513 | close(fd); | |
2514 | return (-1); | |
2515 | } | |
2516 | ||
2517 | if (fileinfo.st_nlink != 1) | |
2518 | { | |
2519 | close(fd); | |
2520 | errno = EPERM; | |
2521 | return (-1); | |
2522 | } | |
2523 | ||
2524 | #ifdef WIN32 | |
2525 | if (fileinfo.st_mode & _S_IFDIR) | |
2526 | #else | |
2527 | if (S_ISDIR(fileinfo.st_mode)) | |
2528 | #endif /* WIN32 */ | |
2529 | { | |
2530 | close(fd); | |
2531 | errno = EISDIR; | |
2532 | return (-1); | |
2533 | } | |
2534 | ||
2535 | #ifndef WIN32 | |
2536 | /* | |
2537 | * Then use lstat to determine whether the filename is a symlink... | |
2538 | */ | |
2539 | ||
2540 | if (lstat(filename, &linkinfo)) | |
2541 | { | |
2542 | close(fd); | |
2543 | return (-1); | |
2544 | } | |
2545 | ||
2546 | if (S_ISLNK(linkinfo.st_mode) || | |
2547 | fileinfo.st_dev != linkinfo.st_dev || | |
2548 | fileinfo.st_ino != linkinfo.st_ino || | |
2549 | #ifdef HAVE_ST_GEN | |
2550 | fileinfo.st_gen != linkinfo.st_gen || | |
2551 | #endif /* HAVE_ST_GEN */ | |
2552 | fileinfo.st_nlink != linkinfo.st_nlink || | |
2553 | fileinfo.st_mode != linkinfo.st_mode) | |
2554 | { | |
2555 | /* | |
2556 | * Yes, don't allow! | |
2557 | */ | |
2558 | ||
2559 | close(fd); | |
2560 | errno = EPERM; | |
2561 | return (-1); | |
2562 | } | |
2563 | #endif /* !WIN32 */ | |
2564 | ||
2565 | return (fd); | |
2566 | } | |
2567 | ||
2568 | ||
ef416fc2 | 2569 | /* |
2570 | * 'cups_read()' - Read from a file descriptor. | |
2571 | */ | |
2572 | ||
2573 | static ssize_t /* O - Number of bytes read or -1 */ | |
2574 | cups_read(cups_file_t *fp, /* I - CUPS file */ | |
2575 | char *buf, /* I - Buffer */ | |
2576 | size_t bytes) /* I - Number bytes */ | |
2577 | { | |
2578 | ssize_t total; /* Total bytes read */ | |
2579 | ||
2580 | ||
e07d4801 | 2581 | DEBUG_printf(("7cups_read(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
2582 | CUPS_LLCAST bytes)); |
2583 | ||
ef416fc2 | 2584 | /* |
2585 | * Loop until we read at least 0 bytes... | |
2586 | */ | |
2587 | ||
2588 | for (;;) | |
2589 | { | |
b86bc4cf | 2590 | #ifdef WIN32 |
2591 | if (fp->mode == 's') | |
2592 | total = (ssize_t)recv(fp->fd, buf, (unsigned)bytes, 0); | |
2593 | else | |
2594 | total = (ssize_t)read(fp->fd, buf, (unsigned)bytes); | |
2595 | #else | |
ef416fc2 | 2596 | if (fp->mode == 's') |
2597 | total = recv(fp->fd, buf, bytes, 0); | |
2598 | else | |
2599 | total = read(fp->fd, buf, bytes); | |
b86bc4cf | 2600 | #endif /* WIN32 */ |
ef416fc2 | 2601 | |
e07d4801 | 2602 | DEBUG_printf(("9cups_read: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
634763e8 | 2603 | |
ef416fc2 | 2604 | if (total >= 0) |
2605 | break; | |
2606 | ||
2607 | /* | |
2608 | * Reads can be interrupted by signals and unavailable resources... | |
2609 | */ | |
2610 | ||
2611 | if (errno == EAGAIN || errno == EINTR) | |
2612 | continue; | |
2613 | else | |
2614 | return (-1); | |
2615 | } | |
2616 | ||
2617 | /* | |
2618 | * Return the total number of bytes read... | |
2619 | */ | |
2620 | ||
2621 | return (total); | |
2622 | } | |
2623 | ||
2624 | ||
2625 | /* | |
2626 | * 'cups_write()' - Write to a file descriptor. | |
2627 | */ | |
2628 | ||
2629 | static ssize_t /* O - Number of bytes written or -1 */ | |
2630 | cups_write(cups_file_t *fp, /* I - CUPS file */ | |
2631 | const char *buf, /* I - Buffer */ | |
2632 | size_t bytes) /* I - Number bytes */ | |
2633 | { | |
2abf387c | 2634 | size_t total; /* Total bytes written */ |
2635 | ssize_t count; /* Count this time */ | |
ef416fc2 | 2636 | |
2637 | ||
e07d4801 | 2638 | DEBUG_printf(("7cups_write(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2639 | CUPS_LLCAST bytes)); |
ecdc0628 | 2640 | |
ef416fc2 | 2641 | /* |
2642 | * Loop until all bytes are written... | |
2643 | */ | |
2644 | ||
2645 | total = 0; | |
2646 | while (bytes > 0) | |
2647 | { | |
b86bc4cf | 2648 | #ifdef WIN32 |
2649 | if (fp->mode == 's') | |
2650 | count = (ssize_t)send(fp->fd, buf, (unsigned)bytes, 0); | |
2651 | else | |
2652 | count = (ssize_t)write(fp->fd, buf, (unsigned)bytes); | |
2653 | #else | |
ef416fc2 | 2654 | if (fp->mode == 's') |
2655 | count = send(fp->fd, buf, bytes, 0); | |
2656 | else | |
2657 | count = write(fp->fd, buf, bytes); | |
b86bc4cf | 2658 | #endif /* WIN32 */ |
ef416fc2 | 2659 | |
e07d4801 | 2660 | DEBUG_printf(("9cups_write: count=" CUPS_LLFMT, CUPS_LLCAST count)); |
634763e8 | 2661 | |
ef416fc2 | 2662 | if (count < 0) |
2663 | { | |
2664 | /* | |
2665 | * Writes can be interrupted by signals and unavailable resources... | |
2666 | */ | |
2667 | ||
2668 | if (errno == EAGAIN || errno == EINTR) | |
2669 | continue; | |
2670 | else | |
2671 | return (-1); | |
2672 | } | |
2673 | ||
2674 | /* | |
2675 | * Update the counts for the last write call... | |
2676 | */ | |
2677 | ||
2678 | bytes -= count; | |
2679 | total += count; | |
2680 | buf += count; | |
2681 | } | |
2682 | ||
2683 | /* | |
2684 | * Return the total number of bytes written... | |
2685 | */ | |
2686 | ||
b86bc4cf | 2687 | return ((ssize_t)total); |
ef416fc2 | 2688 | } |
2689 | ||
2690 | ||
2691 | /* | |
75bd9771 | 2692 | * End of "$Id: file.c 7672 2008-06-18 22:03:02Z mike $". |
ef416fc2 | 2693 | */ |