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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. | |
d4d03398 | 42 | * cupsFilePutConf() - Write a configuration line. |
22c9029b MS |
43 | * cupsFilePuts() - Write a string. |
44 | * cupsFileRead() - Read from a file. | |
45 | * cupsFileRewind() - Set the current file position to the beginning of | |
46 | * the file. | |
47 | * cupsFileSeek() - Seek in a file. | |
48 | * cupsFileStderr() - Return a CUPS file associated with stderr. | |
49 | * cupsFileStdin() - Return a CUPS file associated with stdin. | |
50 | * cupsFileStdout() - Return a CUPS file associated with stdout. | |
51 | * cupsFileTell() - Return the current file position. | |
52 | * cupsFileUnlock() - Unlock access to a file. | |
53 | * cupsFileWrite() - Write to a file. | |
54 | * cups_compress() - Compress a buffer of data. | |
55 | * cups_fill() - Fill the input buffer. | |
d4d03398 | 56 | * cups_open() - Safely open a file for writing. |
22c9029b MS |
57 | * cups_read() - Read from a file descriptor. |
58 | * cups_write() - Write to a file descriptor. | |
ef416fc2 | 59 | */ |
60 | ||
61 | /* | |
62 | * Include necessary headers... | |
63 | */ | |
64 | ||
b9faaae1 | 65 | #include "file-private.h" |
c7017ecc MS |
66 | #include <sys/stat.h> |
67 | #include <sys/types.h> | |
ef416fc2 | 68 | |
69 | ||
70 | /* | |
71 | * Local functions... | |
72 | */ | |
73 | ||
74 | #ifdef HAVE_LIBZ | |
75 | static ssize_t cups_compress(cups_file_t *fp, const char *buf, size_t bytes); | |
76 | #endif /* HAVE_LIBZ */ | |
77 | static ssize_t cups_fill(cups_file_t *fp); | |
c7017ecc | 78 | static int cups_open(const char *filename, int mode); |
ef416fc2 | 79 | static ssize_t cups_read(cups_file_t *fp, char *buf, size_t bytes); |
80 | static ssize_t cups_write(cups_file_t *fp, const char *buf, size_t bytes); | |
81 | ||
82 | ||
22c9029b MS |
83 | /* |
84 | * '_cupsFileCheck()' - Check the permissions of the given filename. | |
85 | */ | |
86 | ||
87 | _cups_fc_result_t /* O - Check result */ | |
88 | _cupsFileCheck( | |
89 | const char *filename, /* I - Filename to check */ | |
90 | _cups_fc_filetype_t filetype, /* I - Type of file checks? */ | |
91 | int dorootchecks, /* I - Check for root permissions? */ | |
92 | _cups_fc_func_t cb, /* I - Callback function */ | |
93 | void *context) /* I - Context pointer for callback */ | |
f228370c | 94 | |
22c9029b MS |
95 | { |
96 | struct stat fileinfo; /* File information */ | |
97 | char message[1024], /* Message string */ | |
98 | temp[1024], /* Parent directory filename */ | |
99 | *ptr; /* Pointer into parent directory */ | |
100 | _cups_fc_result_t result; /* Check result */ | |
101 | ||
102 | ||
88f9aafc MS |
103 | /* |
104 | * Does the filename contain a relative path ("../")? | |
105 | */ | |
106 | ||
107 | if (strstr(filename, "../")) | |
108 | { | |
109 | /* | |
110 | * Yes, fail it! | |
111 | */ | |
112 | ||
113 | result = _CUPS_FILE_CHECK_RELATIVE_PATH; | |
114 | goto finishup; | |
115 | } | |
116 | ||
22c9029b MS |
117 | /* |
118 | * Does the program even exist and is it accessible? | |
119 | */ | |
120 | ||
121 | if (stat(filename, &fileinfo)) | |
122 | { | |
123 | /* | |
124 | * Nope... | |
125 | */ | |
126 | ||
127 | result = _CUPS_FILE_CHECK_MISSING; | |
128 | goto finishup; | |
129 | } | |
130 | ||
131 | /* | |
132 | * Check the execute bit... | |
133 | */ | |
134 | ||
135 | result = _CUPS_FILE_CHECK_OK; | |
136 | ||
137 | switch (filetype) | |
138 | { | |
139 | case _CUPS_FILE_CHECK_DIRECTORY : | |
140 | if (!S_ISDIR(fileinfo.st_mode)) | |
141 | result = _CUPS_FILE_CHECK_WRONG_TYPE; | |
142 | break; | |
143 | ||
144 | default : | |
145 | if (!S_ISREG(fileinfo.st_mode)) | |
146 | result = _CUPS_FILE_CHECK_WRONG_TYPE; | |
147 | break; | |
148 | } | |
149 | ||
150 | if (result) | |
151 | goto finishup; | |
152 | ||
153 | /* | |
154 | * Are we doing root checks? | |
155 | */ | |
156 | ||
157 | if (!dorootchecks) | |
158 | { | |
159 | /* | |
160 | * Nope, so anything (else) goes... | |
161 | */ | |
162 | ||
163 | goto finishup; | |
164 | } | |
165 | ||
166 | /* | |
167 | * Verify permission of the file itself: | |
168 | * | |
169 | * 1. Must be owned by root | |
85dda01c | 170 | * 2. Must not be writable by group |
22c9029b MS |
171 | * 3. Must not be setuid |
172 | * 4. Must not be writable by others | |
173 | */ | |
174 | ||
175 | if (fileinfo.st_uid || /* 1. Must be owned by root */ | |
85dda01c | 176 | (fileinfo.st_mode & S_IWGRP) || /* 2. Must not be writable by group */ |
22c9029b MS |
177 | (fileinfo.st_mode & S_ISUID) || /* 3. Must not be setuid */ |
178 | (fileinfo.st_mode & S_IWOTH)) /* 4. Must not be writable by others */ | |
179 | { | |
180 | result = _CUPS_FILE_CHECK_PERMISSIONS; | |
181 | goto finishup; | |
182 | } | |
183 | ||
184 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY || | |
185 | filetype == _CUPS_FILE_CHECK_FILE_ONLY) | |
186 | goto finishup; | |
187 | ||
188 | /* | |
189 | * Now check the containing directory... | |
190 | */ | |
191 | ||
192 | strlcpy(temp, filename, sizeof(temp)); | |
193 | if ((ptr = strrchr(temp, '/')) != NULL) | |
194 | { | |
195 | if (ptr == temp) | |
196 | ptr[1] = '\0'; | |
197 | else | |
198 | *ptr = '\0'; | |
199 | } | |
200 | ||
201 | if (stat(temp, &fileinfo)) | |
202 | { | |
203 | /* | |
204 | * Doesn't exist?!? | |
205 | */ | |
206 | ||
207 | result = _CUPS_FILE_CHECK_MISSING; | |
208 | filetype = _CUPS_FILE_CHECK_DIRECTORY; | |
209 | filename = temp; | |
210 | ||
211 | goto finishup; | |
212 | } | |
213 | ||
214 | if (fileinfo.st_uid || /* 1. Must be owned by root */ | |
85dda01c | 215 | (fileinfo.st_mode & S_IWGRP) || /* 2. Must not be writable by group */ |
22c9029b MS |
216 | (fileinfo.st_mode & S_ISUID) || /* 3. Must not be setuid */ |
217 | (fileinfo.st_mode & S_IWOTH)) /* 4. Must not be writable by others */ | |
218 | { | |
219 | result = _CUPS_FILE_CHECK_PERMISSIONS; | |
220 | filetype = _CUPS_FILE_CHECK_DIRECTORY; | |
221 | filename = temp; | |
222 | } | |
223 | ||
224 | /* | |
225 | * Common return point... | |
226 | */ | |
227 | ||
228 | finishup: | |
229 | ||
230 | if (cb) | |
231 | { | |
232 | cups_lang_t *lang = cupsLangDefault(); | |
233 | /* Localization information */ | |
234 | ||
235 | switch (result) | |
236 | { | |
237 | case _CUPS_FILE_CHECK_OK : | |
238 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
239 | snprintf(message, sizeof(message), | |
240 | _cupsLangString(lang, _("Directory \"%s\" permissions OK " | |
241 | "(0%o/uid=%d/gid=%d).")), | |
242 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
243 | (int)fileinfo.st_gid); | |
244 | else | |
245 | snprintf(message, sizeof(message), | |
246 | _cupsLangString(lang, _("File \"%s\" permissions OK " | |
247 | "(0%o/uid=%d/gid=%d).")), | |
248 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
249 | (int)fileinfo.st_gid); | |
250 | break; | |
251 | ||
252 | case _CUPS_FILE_CHECK_MISSING : | |
253 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
254 | snprintf(message, sizeof(message), | |
255 | _cupsLangString(lang, _("Directory \"%s\" not available: " | |
256 | "%s")), | |
257 | filename, strerror(errno)); | |
258 | else | |
259 | snprintf(message, sizeof(message), | |
260 | _cupsLangString(lang, _("File \"%s\" not available: %s")), | |
261 | filename, strerror(errno)); | |
262 | break; | |
263 | ||
264 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
265 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
266 | snprintf(message, sizeof(message), | |
267 | _cupsLangString(lang, _("Directory \"%s\" has insecure " | |
268 | "permissions " | |
269 | "(0%o/uid=%d/gid=%d).")), | |
270 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
271 | (int)fileinfo.st_gid); | |
272 | else | |
273 | snprintf(message, sizeof(message), | |
274 | _cupsLangString(lang, _("File \"%s\" has insecure " | |
275 | "permissions " | |
276 | "(0%o/uid=%d/gid=%d).")), | |
277 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
278 | (int)fileinfo.st_gid); | |
279 | break; | |
280 | ||
281 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
282 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
283 | snprintf(message, sizeof(message), | |
284 | _cupsLangString(lang, _("Directory \"%s\" is a file.")), | |
285 | filename); | |
286 | else | |
287 | snprintf(message, sizeof(message), | |
288 | _cupsLangString(lang, _("File \"%s\" is a directory.")), | |
289 | filename); | |
290 | break; | |
88f9aafc MS |
291 | |
292 | case _CUPS_FILE_CHECK_RELATIVE_PATH : | |
293 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
294 | snprintf(message, sizeof(message), | |
295 | _cupsLangString(lang, _("Directory \"%s\" contains a " | |
296 | "relative path.")), filename); | |
297 | else | |
298 | snprintf(message, sizeof(message), | |
299 | _cupsLangString(lang, _("File \"%s\" contains a relative " | |
300 | "path.")), filename); | |
301 | break; | |
22c9029b MS |
302 | } |
303 | ||
304 | (*cb)(context, result, message); | |
305 | } | |
306 | ||
307 | return (result); | |
308 | } | |
309 | ||
310 | ||
311 | /* | |
312 | * '_cupsFileCheckFilter()' - Report file check results as CUPS filter messages. | |
313 | */ | |
314 | ||
315 | void | |
316 | _cupsFileCheckFilter( | |
317 | void *context, /* I - Context pointer (unused) */ | |
318 | _cups_fc_result_t result, /* I - Result code */ | |
319 | const char *message) /* I - Message text */ | |
320 | { | |
321 | const char *prefix; /* Messaging prefix */ | |
322 | ||
323 | ||
321d8d57 MS |
324 | (void)context; |
325 | ||
22c9029b MS |
326 | switch (result) |
327 | { | |
f228370c | 328 | default : |
22c9029b MS |
329 | case _CUPS_FILE_CHECK_OK : |
330 | prefix = "DEBUG2"; | |
331 | break; | |
332 | ||
333 | case _CUPS_FILE_CHECK_MISSING : | |
334 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
335 | prefix = "ERROR"; | |
336 | fputs("STATE: +cups-missing-filter-warning\n", stderr); | |
337 | break; | |
338 | ||
339 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
88f9aafc | 340 | case _CUPS_FILE_CHECK_RELATIVE_PATH : |
22c9029b MS |
341 | prefix = "ERROR"; |
342 | fputs("STATE: +cups-insecure-filter-warning\n", stderr); | |
343 | break; | |
344 | } | |
345 | ||
346 | fprintf(stderr, "%s: %s\n", prefix, message); | |
347 | } | |
348 | ||
349 | ||
ef416fc2 | 350 | /* |
351 | * 'cupsFileClose()' - Close a CUPS file. | |
5a738aea | 352 | * |
426c6a59 | 353 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 354 | */ |
355 | ||
356 | int /* O - 0 on success, -1 on error */ | |
357 | cupsFileClose(cups_file_t *fp) /* I - CUPS file */ | |
358 | { | |
359 | int fd; /* File descriptor */ | |
360 | char mode; /* Open mode */ | |
361 | int status; /* Return status */ | |
80ca4592 | 362 | int is_stdio; /* Is a stdio file? */ |
ef416fc2 | 363 | |
364 | ||
e07d4801 | 365 | DEBUG_printf(("cupsFileClose(fp=%p)", fp)); |
ef416fc2 | 366 | |
367 | /* | |
368 | * Range check... | |
369 | */ | |
370 | ||
371 | if (!fp) | |
372 | return (-1); | |
373 | ||
374 | /* | |
375 | * Flush pending write data... | |
376 | */ | |
377 | ||
378 | if (fp->mode == 'w') | |
379 | status = cupsFileFlush(fp); | |
380 | else | |
381 | status = 0; | |
382 | ||
383 | #ifdef HAVE_LIBZ | |
384 | if (fp->compressed && status >= 0) | |
385 | { | |
386 | if (fp->mode == 'r') | |
387 | { | |
388 | /* | |
389 | * Free decompression data... | |
390 | */ | |
391 | ||
392 | inflateEnd(&fp->stream); | |
393 | } | |
394 | else | |
395 | { | |
396 | /* | |
397 | * Flush any remaining compressed data... | |
398 | */ | |
399 | ||
400 | unsigned char trailer[8]; /* Trailer CRC and length */ | |
401 | int done; /* Done writing... */ | |
402 | ||
403 | ||
404 | fp->stream.avail_in = 0; | |
405 | ||
406 | for (done = 0;;) | |
407 | { | |
408 | if (fp->stream.next_out > fp->cbuf) | |
409 | { | |
410 | if (cups_write(fp, (char *)fp->cbuf, | |
411 | fp->stream.next_out - fp->cbuf) < 0) | |
412 | status = -1; | |
413 | ||
414 | fp->stream.next_out = fp->cbuf; | |
415 | fp->stream.avail_out = sizeof(fp->cbuf); | |
416 | } | |
417 | ||
418 | if (done || status < 0) | |
419 | break; | |
420 | ||
421 | done = deflate(&fp->stream, Z_FINISH) == Z_STREAM_END && | |
422 | fp->stream.next_out == fp->cbuf; | |
423 | } | |
424 | ||
425 | /* | |
426 | * Write the CRC and length... | |
427 | */ | |
428 | ||
429 | trailer[0] = fp->crc; | |
430 | trailer[1] = fp->crc >> 8; | |
431 | trailer[2] = fp->crc >> 16; | |
432 | trailer[3] = fp->crc >> 24; | |
433 | trailer[4] = fp->pos; | |
434 | trailer[5] = fp->pos >> 8; | |
435 | trailer[6] = fp->pos >> 16; | |
436 | trailer[7] = fp->pos >> 24; | |
437 | ||
438 | if (cups_write(fp, (char *)trailer, 8) < 0) | |
439 | status = -1; | |
440 | ||
441 | /* | |
442 | * Free all memory used by the compression stream... | |
443 | */ | |
444 | ||
445 | deflateEnd(&(fp->stream)); | |
446 | } | |
447 | } | |
448 | #endif /* HAVE_LIBZ */ | |
449 | ||
450 | /* | |
451 | * Save the file descriptor we used and free memory... | |
452 | */ | |
453 | ||
80ca4592 | 454 | fd = fp->fd; |
455 | mode = fp->mode; | |
456 | is_stdio = fp->is_stdio; | |
ef416fc2 | 457 | |
75bd9771 MS |
458 | if (fp->printf_buffer) |
459 | free(fp->printf_buffer); | |
460 | ||
ef416fc2 | 461 | free(fp); |
462 | ||
463 | /* | |
464 | * Close the file, returning the close status... | |
465 | */ | |
466 | ||
467 | if (mode == 's') | |
468 | { | |
469 | if (closesocket(fd) < 0) | |
470 | status = -1; | |
471 | } | |
80ca4592 | 472 | else if (!is_stdio) |
ef416fc2 | 473 | { |
474 | if (close(fd) < 0) | |
475 | status = -1; | |
476 | } | |
477 | ||
478 | return (status); | |
479 | } | |
480 | ||
481 | ||
482 | /* | |
483 | * 'cupsFileCompression()' - Return whether a file is compressed. | |
5a738aea | 484 | * |
426c6a59 | 485 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 486 | */ |
487 | ||
5a738aea | 488 | int /* O - @code CUPS_FILE_NONE@ or @code CUPS_FILE_GZIP@ */ |
ef416fc2 | 489 | cupsFileCompression(cups_file_t *fp) /* I - CUPS file */ |
490 | { | |
80ca4592 | 491 | return (fp ? fp->compressed : CUPS_FILE_NONE); |
ef416fc2 | 492 | } |
493 | ||
494 | ||
495 | /* | |
496 | * 'cupsFileEOF()' - Return the end-of-file status. | |
5a738aea | 497 | * |
426c6a59 | 498 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 499 | */ |
500 | ||
5a738aea | 501 | int /* O - 1 on end of file, 0 otherwise */ |
ef416fc2 | 502 | cupsFileEOF(cups_file_t *fp) /* I - CUPS file */ |
503 | { | |
80ca4592 | 504 | return (fp ? fp->eof : 1); |
ef416fc2 | 505 | } |
506 | ||
507 | ||
fa73b229 | 508 | /* |
509 | * 'cupsFileFind()' - Find a file using the specified path. | |
510 | * | |
511 | * This function allows the paths in the path string to be separated by | |
512 | * colons (UNIX standard) or semicolons (Windows standard) and stores the | |
513 | * result in the buffer supplied. If the file cannot be found in any of | |
5a738aea MS |
514 | * the supplied paths, @code NULL@ is returned. A @code NULL@ path only |
515 | * matches the current directory. | |
516 | * | |
426c6a59 | 517 | * @since CUPS 1.2/Mac OS X 10.5@ |
fa73b229 | 518 | */ |
519 | ||
5a738aea | 520 | const char * /* O - Full path to file or @code NULL@ if not found */ |
fa73b229 | 521 | cupsFileFind(const char *filename, /* I - File to find */ |
522 | const char *path, /* I - Colon/semicolon-separated path */ | |
4400e98d | 523 | int executable, /* I - 1 = executable files, 0 = any file/dir */ |
524 | char *buffer, /* I - Filename buffer */ | |
fa73b229 | 525 | int bufsize) /* I - Size of filename buffer */ |
526 | { | |
527 | char *bufptr, /* Current position in buffer */ | |
528 | *bufend; /* End of buffer */ | |
529 | ||
530 | ||
531 | /* | |
532 | * Range check input... | |
533 | */ | |
534 | ||
e07d4801 MS |
535 | DEBUG_printf(("cupsFileFind(filename=\"%s\", path=\"%s\", executable=%d, " |
536 | "buffer=%p, bufsize=%d)", filename, path, executable, buffer, | |
537 | bufsize)); | |
538 | ||
fa73b229 | 539 | if (!filename || !buffer || bufsize < 2) |
540 | return (NULL); | |
541 | ||
542 | if (!path) | |
543 | { | |
544 | /* | |
545 | * No path, so check current directory... | |
546 | */ | |
547 | ||
548 | if (!access(filename, 0)) | |
549 | { | |
550 | strlcpy(buffer, filename, bufsize); | |
551 | return (buffer); | |
552 | } | |
553 | else | |
554 | return (NULL); | |
555 | } | |
556 | ||
557 | /* | |
558 | * Now check each path and return the first match... | |
559 | */ | |
560 | ||
561 | bufend = buffer + bufsize - 1; | |
562 | bufptr = buffer; | |
563 | ||
564 | while (*path) | |
565 | { | |
b86bc4cf | 566 | #ifdef WIN32 |
567 | if (*path == ';' || (*path == ':' && ((bufptr - buffer) > 1 || !isalpha(buffer[0] & 255)))) | |
568 | #else | |
fa73b229 | 569 | if (*path == ';' || *path == ':') |
b86bc4cf | 570 | #endif /* WIN32 */ |
fa73b229 | 571 | { |
572 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
573 | *bufptr++ = '/'; | |
574 | ||
575 | strlcpy(bufptr, filename, bufend - bufptr); | |
576 | ||
4400e98d | 577 | #ifdef WIN32 |
fa73b229 | 578 | if (!access(buffer, 0)) |
4400e98d | 579 | #else |
580 | if (!access(buffer, executable ? X_OK : 0)) | |
581 | #endif /* WIN32 */ | |
b86bc4cf | 582 | { |
e07d4801 | 583 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 584 | return (buffer); |
b86bc4cf | 585 | } |
fa73b229 | 586 | |
587 | bufptr = buffer; | |
588 | } | |
589 | else if (bufptr < bufend) | |
590 | *bufptr++ = *path; | |
591 | ||
592 | path ++; | |
593 | } | |
594 | ||
595 | /* | |
596 | * Check the last path... | |
597 | */ | |
598 | ||
599 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
600 | *bufptr++ = '/'; | |
601 | ||
602 | strlcpy(bufptr, filename, bufend - bufptr); | |
603 | ||
604 | if (!access(buffer, 0)) | |
b86bc4cf | 605 | { |
e07d4801 | 606 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 607 | return (buffer); |
b86bc4cf | 608 | } |
fa73b229 | 609 | else |
b86bc4cf | 610 | { |
e07d4801 | 611 | DEBUG_puts("1cupsFileFind: Returning NULL"); |
fa73b229 | 612 | return (NULL); |
b86bc4cf | 613 | } |
fa73b229 | 614 | } |
615 | ||
616 | ||
ef416fc2 | 617 | /* |
618 | * 'cupsFileFlush()' - Flush pending output. | |
5a738aea | 619 | * |
426c6a59 | 620 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 621 | */ |
622 | ||
623 | int /* O - 0 on success, -1 on error */ | |
624 | cupsFileFlush(cups_file_t *fp) /* I - CUPS file */ | |
625 | { | |
2abf387c | 626 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 627 | |
628 | ||
e07d4801 | 629 | DEBUG_printf(("cupsFileFlush(fp=%p)", fp)); |
ef416fc2 | 630 | |
631 | /* | |
632 | * Range check input... | |
633 | */ | |
634 | ||
635 | if (!fp || fp->mode != 'w') | |
636 | { | |
e07d4801 | 637 | DEBUG_puts("1cupsFileFlush: Attempt to flush a read-only file..."); |
ef416fc2 | 638 | return (-1); |
639 | } | |
640 | ||
b86bc4cf | 641 | bytes = (ssize_t)(fp->ptr - fp->buf); |
ef416fc2 | 642 | |
e07d4801 | 643 | DEBUG_printf(("2cupsFileFlush: Flushing " CUPS_LLFMT " bytes...", |
634763e8 | 644 | CUPS_LLCAST bytes)); |
ecdc0628 | 645 | |
ef416fc2 | 646 | if (bytes > 0) |
647 | { | |
648 | #ifdef HAVE_LIBZ | |
649 | if (fp->compressed) | |
650 | bytes = cups_compress(fp, fp->buf, bytes); | |
651 | else | |
652 | #endif /* HAVE_LIBZ */ | |
653 | bytes = cups_write(fp, fp->buf, bytes); | |
654 | ||
655 | if (bytes < 0) | |
656 | return (-1); | |
657 | ||
658 | fp->ptr = fp->buf; | |
659 | } | |
f14324a7 | 660 | |
ef416fc2 | 661 | return (0); |
662 | } | |
663 | ||
664 | ||
665 | /* | |
666 | * 'cupsFileGetChar()' - Get a single character from a file. | |
5a738aea | 667 | * |
426c6a59 | 668 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 669 | */ |
670 | ||
5a738aea | 671 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 672 | cupsFileGetChar(cups_file_t *fp) /* I - CUPS file */ |
673 | { | |
674 | /* | |
675 | * Range check input... | |
676 | */ | |
677 | ||
678 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
b86bc4cf | 679 | { |
f14324a7 | 680 | DEBUG_puts("5cupsFileGetChar: Bad arguments!"); |
ef416fc2 | 681 | return (-1); |
b86bc4cf | 682 | } |
ef416fc2 | 683 | |
684 | /* | |
685 | * If the input buffer is empty, try to read more data... | |
686 | */ | |
687 | ||
688 | if (fp->ptr >= fp->end) | |
689 | if (cups_fill(fp) < 0) | |
b86bc4cf | 690 | { |
f14324a7 | 691 | DEBUG_puts("5cupsFileGetChar: Unable to fill buffer!"); |
ef416fc2 | 692 | return (-1); |
b86bc4cf | 693 | } |
ef416fc2 | 694 | |
695 | /* | |
696 | * Return the next character in the buffer... | |
697 | */ | |
698 | ||
f14324a7 | 699 | DEBUG_printf(("5cupsFileGetChar: Returning %d...", *(fp->ptr) & 255)); |
b86bc4cf | 700 | |
634763e8 MS |
701 | fp->pos ++; |
702 | ||
f14324a7 | 703 | DEBUG_printf(("6cupsFileGetChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 704 | |
ef416fc2 | 705 | return (*(fp->ptr)++ & 255); |
706 | } | |
707 | ||
708 | ||
709 | /* | |
22c9029b | 710 | * 'cupsFileGetConf()' - Get a line from a configuration file. |
5a738aea | 711 | * |
426c6a59 | 712 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 713 | */ |
714 | ||
5a738aea | 715 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 716 | cupsFileGetConf(cups_file_t *fp, /* I - CUPS file */ |
717 | char *buf, /* O - String buffer */ | |
718 | size_t buflen, /* I - Size of string buffer */ | |
719 | char **value, /* O - Pointer to value */ | |
720 | int *linenum) /* IO - Current line number */ | |
721 | { | |
722 | char *ptr; /* Pointer into line */ | |
723 | ||
724 | ||
725 | /* | |
726 | * Range check input... | |
727 | */ | |
728 | ||
e07d4801 MS |
729 | DEBUG_printf(("2cupsFileGetConf(fp=%p, buf=%p, buflen=" CUPS_LLFMT |
730 | ", value=%p, linenum=%p)", fp, buf, CUPS_LLCAST buflen, | |
634763e8 MS |
731 | value, linenum)); |
732 | ||
ef416fc2 | 733 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || |
734 | !buf || buflen < 2 || !value) | |
735 | { | |
736 | if (value) | |
737 | *value = NULL; | |
738 | ||
739 | return (NULL); | |
740 | } | |
741 | ||
742 | /* | |
743 | * Read the next non-comment line... | |
744 | */ | |
745 | ||
746 | *value = NULL; | |
f7deaa1a | 747 | |
ef416fc2 | 748 | while (cupsFileGets(fp, buf, buflen)) |
749 | { | |
750 | (*linenum) ++; | |
751 | ||
752 | /* | |
753 | * Strip any comments... | |
754 | */ | |
755 | ||
756 | if ((ptr = strchr(buf, '#')) != NULL) | |
757 | { | |
f7deaa1a | 758 | if (ptr > buf && ptr[-1] == '\\') |
ef416fc2 | 759 | { |
f7deaa1a | 760 | // Unquote the #... |
761 | _cups_strcpy(ptr - 1, ptr); | |
ef416fc2 | 762 | } |
f7deaa1a | 763 | else |
764 | { | |
765 | // Strip the comment and any trailing whitespace... | |
766 | while (ptr > buf) | |
767 | { | |
7cf5915e | 768 | if (!_cups_isspace(ptr[-1])) |
f7deaa1a | 769 | break; |
770 | ||
771 | ptr --; | |
772 | } | |
ef416fc2 | 773 | |
f7deaa1a | 774 | *ptr = '\0'; |
775 | } | |
ef416fc2 | 776 | } |
777 | ||
778 | /* | |
779 | * Strip leading whitespace... | |
780 | */ | |
781 | ||
7cf5915e | 782 | for (ptr = buf; _cups_isspace(*ptr); ptr ++); |
ef416fc2 | 783 | |
784 | if (ptr > buf) | |
785 | _cups_strcpy(buf, ptr); | |
786 | ||
787 | /* | |
788 | * See if there is anything left... | |
789 | */ | |
790 | ||
791 | if (buf[0]) | |
792 | { | |
793 | /* | |
794 | * Yes, grab any value and return... | |
795 | */ | |
796 | ||
797 | for (ptr = buf; *ptr; ptr ++) | |
7cf5915e | 798 | if (_cups_isspace(*ptr)) |
ef416fc2 | 799 | break; |
800 | ||
801 | if (*ptr) | |
802 | { | |
803 | /* | |
804 | * Have a value, skip any other spaces... | |
805 | */ | |
806 | ||
7cf5915e | 807 | while (_cups_isspace(*ptr)) |
ef416fc2 | 808 | *ptr++ = '\0'; |
809 | ||
810 | if (*ptr) | |
811 | *value = ptr; | |
812 | ||
813 | /* | |
814 | * Strip trailing whitespace and > for lines that begin with <... | |
815 | */ | |
816 | ||
817 | ptr += strlen(ptr) - 1; | |
818 | ||
819 | if (buf[0] == '<' && *ptr == '>') | |
820 | *ptr-- = '\0'; | |
821 | else if (buf[0] == '<' && *ptr != '>') | |
822 | { | |
823 | /* | |
824 | * Syntax error... | |
825 | */ | |
826 | ||
827 | *value = NULL; | |
828 | return (buf); | |
829 | } | |
830 | ||
7cf5915e | 831 | while (ptr > *value && _cups_isspace(*ptr)) |
ef416fc2 | 832 | *ptr-- = '\0'; |
833 | } | |
834 | ||
835 | /* | |
836 | * Return the line... | |
837 | */ | |
838 | ||
839 | return (buf); | |
840 | } | |
841 | } | |
842 | ||
843 | return (NULL); | |
844 | } | |
845 | ||
846 | ||
80ca4592 | 847 | /* |
848 | * 'cupsFileGetLine()' - Get a CR and/or LF-terminated line that may | |
849 | * contain binary data. | |
850 | * | |
5a738aea MS |
851 | * This function differs from @link cupsFileGets@ in that the trailing CR |
852 | * and LF are preserved, as is any binary data on the line. The buffer is | |
853 | * nul-terminated, however you should use the returned length to determine | |
80ca4592 | 854 | * the number of bytes on the line. |
5a738aea | 855 | * |
426c6a59 | 856 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 857 | */ |
858 | ||
5a738aea | 859 | size_t /* O - Number of bytes on line or 0 on end of file */ |
80ca4592 | 860 | cupsFileGetLine(cups_file_t *fp, /* I - File to read from */ |
861 | char *buf, /* I - Buffer */ | |
862 | size_t buflen) /* I - Size of buffer */ | |
863 | { | |
864 | int ch; /* Character from file */ | |
865 | char *ptr, /* Current position in line buffer */ | |
866 | *end; /* End of line buffer */ | |
867 | ||
868 | ||
869 | /* | |
870 | * Range check input... | |
871 | */ | |
872 | ||
e07d4801 | 873 | DEBUG_printf(("2cupsFileGetLine(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", |
634763e8 MS |
874 | fp, buf, CUPS_LLCAST buflen)); |
875 | ||
80ca4592 | 876 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 3) |
877 | return (0); | |
878 | ||
879 | /* | |
880 | * Now loop until we have a valid line... | |
881 | */ | |
882 | ||
883 | for (ptr = buf, end = buf + buflen - 2; ptr < end ;) | |
884 | { | |
885 | if (fp->ptr >= fp->end) | |
886 | if (cups_fill(fp) <= 0) | |
887 | break; | |
888 | ||
889 | *ptr++ = ch = *(fp->ptr)++; | |
634763e8 | 890 | fp->pos ++; |
80ca4592 | 891 | |
892 | if (ch == '\r') | |
893 | { | |
894 | /* | |
895 | * Check for CR LF... | |
896 | */ | |
897 | ||
898 | if (fp->ptr >= fp->end) | |
899 | if (cups_fill(fp) <= 0) | |
900 | break; | |
901 | ||
902 | if (*(fp->ptr) == '\n') | |
634763e8 | 903 | { |
80ca4592 | 904 | *ptr++ = *(fp->ptr)++; |
634763e8 MS |
905 | fp->pos ++; |
906 | } | |
80ca4592 | 907 | |
908 | break; | |
909 | } | |
910 | else if (ch == '\n') | |
911 | { | |
912 | /* | |
913 | * Line feed ends a line... | |
914 | */ | |
915 | ||
916 | break; | |
917 | } | |
918 | } | |
919 | ||
920 | *ptr = '\0'; | |
921 | ||
e07d4801 | 922 | DEBUG_printf(("4cupsFileGetLine: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 923 | |
80ca4592 | 924 | return (ptr - buf); |
925 | } | |
926 | ||
927 | ||
ef416fc2 | 928 | /* |
929 | * 'cupsFileGets()' - Get a CR and/or LF-terminated line. | |
5a738aea | 930 | * |
426c6a59 | 931 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 932 | */ |
933 | ||
5a738aea | 934 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 935 | cupsFileGets(cups_file_t *fp, /* I - CUPS file */ |
936 | char *buf, /* O - String buffer */ | |
937 | size_t buflen) /* I - Size of string buffer */ | |
938 | { | |
939 | int ch; /* Character from file */ | |
940 | char *ptr, /* Current position in line buffer */ | |
941 | *end; /* End of line buffer */ | |
942 | ||
943 | ||
944 | /* | |
945 | * Range check input... | |
946 | */ | |
947 | ||
e07d4801 | 948 | DEBUG_printf(("2cupsFileGets(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
949 | CUPS_LLCAST buflen)); |
950 | ||
ef416fc2 | 951 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 2) |
952 | return (NULL); | |
953 | ||
954 | /* | |
955 | * Now loop until we have a valid line... | |
956 | */ | |
957 | ||
958 | for (ptr = buf, end = buf + buflen - 1; ptr < end ;) | |
959 | { | |
960 | if (fp->ptr >= fp->end) | |
961 | if (cups_fill(fp) <= 0) | |
962 | { | |
963 | if (ptr == buf) | |
964 | return (NULL); | |
965 | else | |
966 | break; | |
967 | } | |
968 | ||
969 | ch = *(fp->ptr)++; | |
634763e8 | 970 | fp->pos ++; |
ef416fc2 | 971 | |
972 | if (ch == '\r') | |
973 | { | |
974 | /* | |
975 | * Check for CR LF... | |
976 | */ | |
977 | ||
978 | if (fp->ptr >= fp->end) | |
979 | if (cups_fill(fp) <= 0) | |
980 | break; | |
981 | ||
982 | if (*(fp->ptr) == '\n') | |
634763e8 MS |
983 | { |
984 | fp->ptr ++; | |
985 | fp->pos ++; | |
986 | } | |
ef416fc2 | 987 | |
988 | break; | |
989 | } | |
990 | else if (ch == '\n') | |
991 | { | |
992 | /* | |
993 | * Line feed ends a line... | |
994 | */ | |
995 | ||
996 | break; | |
997 | } | |
998 | else | |
999 | *ptr++ = ch; | |
1000 | } | |
1001 | ||
1002 | *ptr = '\0'; | |
1003 | ||
e07d4801 | 1004 | DEBUG_printf(("4cupsFileGets: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1005 | |
ef416fc2 | 1006 | return (buf); |
1007 | } | |
1008 | ||
1009 | ||
1010 | /* | |
1011 | * 'cupsFileLock()' - Temporarily lock access to a file. | |
5a738aea | 1012 | * |
426c6a59 | 1013 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1014 | */ |
1015 | ||
1016 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 1017 | cupsFileLock(cups_file_t *fp, /* I - CUPS file */ |
ef416fc2 | 1018 | int block) /* I - 1 to wait for the lock, 0 to fail right away */ |
1019 | { | |
1020 | /* | |
1021 | * Range check... | |
1022 | */ | |
1023 | ||
1024 | if (!fp || fp->mode == 's') | |
1025 | return (-1); | |
1026 | ||
1027 | /* | |
1028 | * Try the lock... | |
1029 | */ | |
1030 | ||
1031 | #ifdef WIN32 | |
536bc2c6 | 1032 | return (_locking(fp->fd, block ? _LK_LOCK : _LK_NBLCK, 0)); |
ef416fc2 | 1033 | #else |
1034 | return (lockf(fp->fd, block ? F_LOCK : F_TLOCK, 0)); | |
1035 | #endif /* WIN32 */ | |
1036 | } | |
1037 | ||
1038 | ||
1039 | /* | |
1040 | * 'cupsFileNumber()' - Return the file descriptor associated with a CUPS file. | |
5a738aea | 1041 | * |
426c6a59 | 1042 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1043 | */ |
1044 | ||
1045 | int /* O - File descriptor */ | |
1046 | cupsFileNumber(cups_file_t *fp) /* I - CUPS file */ | |
1047 | { | |
5a738aea MS |
1048 | if (fp) |
1049 | return (fp->fd); | |
1050 | else | |
1051 | return (-1); | |
ef416fc2 | 1052 | } |
1053 | ||
1054 | ||
1055 | /* | |
1056 | * 'cupsFileOpen()' - Open a CUPS file. | |
5a738aea MS |
1057 | * |
1058 | * The "mode" parameter can be "r" to read, "w" to write, overwriting any | |
1059 | * existing file, "a" to append to an existing file or create a new file, | |
1060 | * or "s" to open a socket connection. | |
1061 | * | |
634763e8 MS |
1062 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1063 | * supplied which enables Flate compression of the file. Compression is | |
1064 | * not supported for the "a" (append) mode. | |
5a738aea MS |
1065 | * |
1066 | * When opening a socket connection, the filename is a string of the form | |
1067 | * "address:port" or "hostname:port". The socket will make an IPv4 or IPv6 | |
1068 | * connection as needed, generally preferring IPv6 connections when there is | |
1069 | * a choice. | |
1070 | * | |
426c6a59 | 1071 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1072 | */ |
1073 | ||
5a738aea | 1074 | cups_file_t * /* O - CUPS file or @code NULL@ if the file or socket cannot be opened */ |
ef416fc2 | 1075 | cupsFileOpen(const char *filename, /* I - Name of file */ |
1076 | const char *mode) /* I - Open mode */ | |
1077 | { | |
1078 | cups_file_t *fp; /* New CUPS file */ | |
1079 | int fd; /* File descriptor */ | |
1080 | char hostname[1024], /* Hostname */ | |
1081 | *portname; /* Port "name" (number or service) */ | |
1082 | http_addrlist_t *addrlist; /* Host address list */ | |
1083 | ||
1084 | ||
e07d4801 | 1085 | DEBUG_printf(("cupsFileOpen(filename=\"%s\", mode=\"%s\")", filename, |
b423cd4c | 1086 | mode)); |
1087 | ||
ef416fc2 | 1088 | /* |
1089 | * Range check input... | |
1090 | */ | |
1091 | ||
1092 | if (!filename || !mode || | |
634763e8 MS |
1093 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1094 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1095 | return (NULL); |
1096 | ||
1097 | /* | |
1098 | * Open the file... | |
1099 | */ | |
1100 | ||
1101 | switch (*mode) | |
1102 | { | |
1103 | case 'a' : /* Append file */ | |
c7017ecc MS |
1104 | fd = cups_open(filename, |
1105 | O_RDWR | O_CREAT | O_APPEND | O_LARGEFILE | O_BINARY); | |
ef416fc2 | 1106 | break; |
1107 | ||
1108 | case 'r' : /* Read file */ | |
b86bc4cf | 1109 | fd = open(filename, O_RDONLY | O_LARGEFILE | O_BINARY, 0); |
ef416fc2 | 1110 | break; |
1111 | ||
1112 | case 'w' : /* Write file */ | |
c7017ecc MS |
1113 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); |
1114 | if (fd < 0 && errno == ENOENT) | |
1115 | { | |
1116 | fd = cups_open(filename, | |
1117 | O_WRONLY | O_CREAT | O_EXCL | O_LARGEFILE | O_BINARY); | |
1118 | if (fd < 0 && errno == EEXIST) | |
1119 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); | |
1120 | } | |
1121 | ||
1122 | if (fd >= 0) | |
1123 | #ifdef WIN32 | |
1124 | _chsize(fd, 0); | |
1125 | #else | |
1126 | ftruncate(fd, 0); | |
1127 | #endif /* WIN32 */ | |
ef416fc2 | 1128 | break; |
1129 | ||
1130 | case 's' : /* Read/write socket */ | |
1131 | strlcpy(hostname, filename, sizeof(hostname)); | |
1132 | if ((portname = strrchr(hostname, ':')) != NULL) | |
1133 | *portname++ = '\0'; | |
1134 | else | |
1135 | return (NULL); | |
1136 | ||
1137 | /* | |
1138 | * Lookup the hostname and service... | |
1139 | */ | |
1140 | ||
1141 | if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL) | |
1142 | return (NULL); | |
1143 | ||
1144 | /* | |
1145 | * Connect to the server... | |
1146 | */ | |
1147 | ||
1148 | if (!httpAddrConnect(addrlist, &fd)) | |
1149 | { | |
1150 | httpAddrFreeList(addrlist); | |
1151 | return (NULL); | |
1152 | } | |
1153 | ||
1154 | httpAddrFreeList(addrlist); | |
1155 | break; | |
1156 | ||
1157 | default : /* Remove bogus compiler warning... */ | |
1158 | return (NULL); | |
1159 | } | |
1160 | ||
1161 | if (fd < 0) | |
1162 | return (NULL); | |
1163 | ||
1164 | /* | |
1165 | * Create the CUPS file structure... | |
1166 | */ | |
1167 | ||
1168 | if ((fp = cupsFileOpenFd(fd, mode)) == NULL) | |
1169 | { | |
1170 | if (*mode == 's') | |
1171 | closesocket(fd); | |
1172 | else | |
1173 | close(fd); | |
1174 | } | |
1175 | ||
1176 | /* | |
1177 | * Return it... | |
1178 | */ | |
1179 | ||
1180 | return (fp); | |
1181 | } | |
1182 | ||
1183 | /* | |
1184 | * 'cupsFileOpenFd()' - Open a CUPS file using a file descriptor. | |
5a738aea | 1185 | * |
634763e8 MS |
1186 | * The "mode" parameter can be "r" to read, "w" to write, "a" to append, |
1187 | * or "s" to treat the file descriptor as a bidirectional socket connection. | |
5a738aea | 1188 | * |
634763e8 MS |
1189 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1190 | * supplied which enables Flate compression of the file. Compression is | |
1191 | * not supported for the "a" (append) mode. | |
5a738aea | 1192 | * |
426c6a59 | 1193 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1194 | */ |
1195 | ||
5a738aea | 1196 | cups_file_t * /* O - CUPS file or @code NULL@ if the file could not be opened */ |
ef416fc2 | 1197 | cupsFileOpenFd(int fd, /* I - File descriptor */ |
1198 | const char *mode) /* I - Open mode */ | |
1199 | { | |
1200 | cups_file_t *fp; /* New CUPS file */ | |
1201 | ||
1202 | ||
e07d4801 | 1203 | DEBUG_printf(("cupsFileOpenFd(fd=%d, mode=\"%s\")", fd, mode)); |
b423cd4c | 1204 | |
ef416fc2 | 1205 | /* |
1206 | * Range check input... | |
1207 | */ | |
1208 | ||
1209 | if (fd < 0 || !mode || | |
634763e8 MS |
1210 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1211 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1212 | return (NULL); |
1213 | ||
1214 | /* | |
1215 | * Allocate memory... | |
1216 | */ | |
1217 | ||
1218 | if ((fp = calloc(1, sizeof(cups_file_t))) == NULL) | |
1219 | return (NULL); | |
1220 | ||
1221 | /* | |
1222 | * Open the file... | |
1223 | */ | |
1224 | ||
1225 | fp->fd = fd; | |
1226 | ||
1227 | switch (*mode) | |
1228 | { | |
ef416fc2 | 1229 | case 'a' : |
634763e8 MS |
1230 | fp->pos = lseek(fd, 0, SEEK_END); |
1231 | ||
1232 | case 'w' : | |
ef416fc2 | 1233 | fp->mode = 'w'; |
1234 | fp->ptr = fp->buf; | |
1235 | fp->end = fp->buf + sizeof(fp->buf); | |
1236 | ||
1237 | #ifdef HAVE_LIBZ | |
1238 | if (mode[1] >= '1' && mode[1] <= '9') | |
1239 | { | |
1240 | /* | |
1241 | * Open a compressed stream, so write the standard gzip file | |
1242 | * header... | |
1243 | */ | |
1244 | ||
1245 | unsigned char header[10]; /* gzip file header */ | |
1246 | time_t curtime; /* Current time */ | |
1247 | ||
1248 | ||
1249 | curtime = time(NULL); | |
1250 | header[0] = 0x1f; | |
1251 | header[1] = 0x8b; | |
1252 | header[2] = Z_DEFLATED; | |
1253 | header[3] = 0; | |
1254 | header[4] = curtime; | |
1255 | header[5] = curtime >> 8; | |
1256 | header[6] = curtime >> 16; | |
1257 | header[7] = curtime >> 24; | |
1258 | header[8] = 0; | |
1259 | header[9] = 0x03; | |
1260 | ||
1261 | cups_write(fp, (char *)header, 10); | |
1262 | ||
1263 | /* | |
1264 | * Initialize the compressor... | |
1265 | */ | |
1266 | ||
1267 | deflateInit2(&(fp->stream), mode[1] - '0', Z_DEFLATED, -15, 8, | |
1268 | Z_DEFAULT_STRATEGY); | |
1269 | ||
1270 | fp->stream.next_out = fp->cbuf; | |
1271 | fp->stream.avail_out = sizeof(fp->cbuf); | |
1272 | fp->compressed = 1; | |
1273 | fp->crc = crc32(0L, Z_NULL, 0); | |
1274 | } | |
1275 | #endif /* HAVE_LIBZ */ | |
1276 | break; | |
1277 | ||
1278 | case 'r' : | |
1279 | fp->mode = 'r'; | |
1280 | break; | |
1281 | ||
1282 | case 's' : | |
1283 | fp->mode = 's'; | |
1284 | break; | |
1285 | ||
1286 | default : /* Remove bogus compiler warning... */ | |
1287 | return (NULL); | |
1288 | } | |
1289 | ||
1290 | /* | |
1291 | * Don't pass this file to child processes... | |
1292 | */ | |
1293 | ||
1294 | #ifndef WIN32 | |
1295 | fcntl(fp->fd, F_SETFD, fcntl(fp->fd, F_GETFD) | FD_CLOEXEC); | |
1296 | #endif /* !WIN32 */ | |
1297 | ||
1298 | return (fp); | |
1299 | } | |
1300 | ||
1301 | ||
1302 | /* | |
1303 | * 'cupsFilePeekChar()' - Peek at the next character from a file. | |
5a738aea | 1304 | * |
426c6a59 | 1305 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1306 | */ |
1307 | ||
5a738aea | 1308 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 1309 | cupsFilePeekChar(cups_file_t *fp) /* I - CUPS file */ |
1310 | { | |
1311 | /* | |
1312 | * Range check input... | |
1313 | */ | |
1314 | ||
1315 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
1316 | return (-1); | |
1317 | ||
1318 | /* | |
1319 | * If the input buffer is empty, try to read more data... | |
1320 | */ | |
1321 | ||
1322 | if (fp->ptr >= fp->end) | |
1323 | if (cups_fill(fp) < 0) | |
1324 | return (-1); | |
1325 | ||
1326 | /* | |
1327 | * Return the next character in the buffer... | |
1328 | */ | |
1329 | ||
1330 | return (*(fp->ptr) & 255); | |
1331 | } | |
1332 | ||
1333 | ||
1334 | /* | |
1335 | * 'cupsFilePrintf()' - Write a formatted string. | |
5a738aea | 1336 | * |
426c6a59 | 1337 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1338 | */ |
1339 | ||
5a738aea | 1340 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1341 | cupsFilePrintf(cups_file_t *fp, /* I - CUPS file */ |
1342 | const char *format, /* I - Printf-style format string */ | |
1343 | ...) /* I - Additional args as necessary */ | |
1344 | { | |
1345 | va_list ap; /* Argument list */ | |
2abf387c | 1346 | ssize_t bytes; /* Formatted size */ |
ecdc0628 | 1347 | |
ef416fc2 | 1348 | |
e07d4801 | 1349 | DEBUG_printf(("2cupsFilePrintf(fp=%p, format=\"%s\", ...)", fp, format)); |
ef416fc2 | 1350 | |
1351 | if (!fp || !format || (fp->mode != 'w' && fp->mode != 's')) | |
1352 | return (-1); | |
1353 | ||
75bd9771 MS |
1354 | if (!fp->printf_buffer) |
1355 | { | |
1356 | /* | |
1357 | * Start with an 1k printf buffer... | |
1358 | */ | |
1359 | ||
1360 | if ((fp->printf_buffer = malloc(1024)) == NULL) | |
1361 | return (-1); | |
1362 | ||
1363 | fp->printf_size = 1024; | |
1364 | } | |
1365 | ||
ef416fc2 | 1366 | va_start(ap, format); |
75bd9771 | 1367 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); |
ef416fc2 | 1368 | va_end(ap); |
1369 | ||
536bc2c6 | 1370 | if (bytes >= (ssize_t)fp->printf_size) |
75bd9771 MS |
1371 | { |
1372 | /* | |
1373 | * Expand the printf buffer... | |
1374 | */ | |
1375 | ||
1376 | char *temp; /* Temporary buffer pointer */ | |
1377 | ||
1378 | ||
1379 | if (bytes > 65535) | |
1380 | return (-1); | |
1381 | ||
1382 | if ((temp = realloc(fp->printf_buffer, bytes + 1)) == NULL) | |
1383 | return (-1); | |
1384 | ||
1385 | fp->printf_buffer = temp; | |
1386 | fp->printf_size = bytes + 1; | |
1387 | ||
1388 | va_start(ap, format); | |
1389 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); | |
1390 | va_end(ap); | |
1391 | } | |
ecdc0628 | 1392 | |
ef416fc2 | 1393 | if (fp->mode == 's') |
634763e8 | 1394 | { |
75bd9771 | 1395 | if (cups_write(fp, fp->printf_buffer, bytes) < 0) |
634763e8 MS |
1396 | return (-1); |
1397 | ||
1398 | fp->pos += bytes; | |
1399 | ||
e07d4801 | 1400 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 MS |
1401 | |
1402 | return (bytes); | |
1403 | } | |
ef416fc2 | 1404 | |
1405 | if ((fp->ptr + bytes) > fp->end) | |
1406 | if (cupsFileFlush(fp)) | |
1407 | return (-1); | |
1408 | ||
1409 | fp->pos += bytes; | |
1410 | ||
e07d4801 | 1411 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1412 | |
ef416fc2 | 1413 | if (bytes > sizeof(fp->buf)) |
1414 | { | |
1415 | #ifdef HAVE_LIBZ | |
1416 | if (fp->compressed) | |
75bd9771 | 1417 | return (cups_compress(fp, fp->printf_buffer, bytes)); |
ef416fc2 | 1418 | else |
1419 | #endif /* HAVE_LIBZ */ | |
75bd9771 | 1420 | return (cups_write(fp, fp->printf_buffer, bytes)); |
ef416fc2 | 1421 | } |
1422 | else | |
1423 | { | |
75bd9771 | 1424 | memcpy(fp->ptr, fp->printf_buffer, bytes); |
ef416fc2 | 1425 | fp->ptr += bytes; |
1426 | return (bytes); | |
1427 | } | |
1428 | } | |
1429 | ||
1430 | ||
1431 | /* | |
1432 | * 'cupsFilePutChar()' - Write a character. | |
5a738aea | 1433 | * |
426c6a59 | 1434 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1435 | */ |
1436 | ||
1437 | int /* O - 0 on success, -1 on error */ | |
1438 | cupsFilePutChar(cups_file_t *fp, /* I - CUPS file */ | |
1439 | int c) /* I - Character to write */ | |
1440 | { | |
1441 | /* | |
1442 | * Range check input... | |
1443 | */ | |
1444 | ||
1445 | if (!fp || (fp->mode != 'w' && fp->mode != 's')) | |
1446 | return (-1); | |
1447 | ||
1448 | if (fp->mode == 's') | |
1449 | { | |
1450 | /* | |
1451 | * Send character immediately over socket... | |
1452 | */ | |
1453 | ||
1454 | char ch; /* Output character */ | |
1455 | ||
1456 | ||
1457 | ch = c; | |
1458 | ||
1459 | if (send(fp->fd, &ch, 1, 0) < 1) | |
1460 | return (-1); | |
1461 | } | |
1462 | else | |
1463 | { | |
1464 | /* | |
1465 | * Buffer it up... | |
1466 | */ | |
1467 | ||
1468 | if (fp->ptr >= fp->end) | |
1469 | if (cupsFileFlush(fp)) | |
1470 | return (-1); | |
1471 | ||
1472 | *(fp->ptr) ++ = c; | |
1473 | } | |
1474 | ||
1475 | fp->pos ++; | |
1476 | ||
e07d4801 | 1477 | DEBUG_printf(("4cupsFilePutChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1478 | |
ef416fc2 | 1479 | return (0); |
1480 | } | |
1481 | ||
1482 | ||
58dc1933 MS |
1483 | /* |
1484 | * 'cupsFilePutConf()' - Write a configuration line. | |
1485 | * | |
1486 | * This function handles any comment escaping of the value. | |
1487 | * | |
178cb736 | 1488 | * @since CUPS 1.4/Mac OS X 10.6@ |
58dc1933 MS |
1489 | */ |
1490 | ||
1491 | ssize_t /* O - Number of bytes written or -1 on error */ | |
1492 | cupsFilePutConf(cups_file_t *fp, /* I - CUPS file */ | |
1493 | const char *directive, /* I - Directive */ | |
1494 | const char *value) /* I - Value */ | |
1495 | { | |
1496 | ssize_t bytes, /* Number of bytes written */ | |
1497 | temp; /* Temporary byte count */ | |
1498 | const char *ptr; /* Pointer into value */ | |
1499 | ||
1500 | ||
1501 | if (!fp || !directive || !*directive) | |
1502 | return (-1); | |
1503 | ||
1504 | if ((bytes = cupsFilePuts(fp, directive)) < 0) | |
1505 | return (-1); | |
1506 | ||
1507 | if (cupsFilePutChar(fp, ' ') < 0) | |
1508 | return (-1); | |
1509 | bytes ++; | |
1510 | ||
1511 | if (value && *value) | |
1512 | { | |
1513 | if ((ptr = strchr(value, '#')) != NULL) | |
1514 | { | |
1515 | /* | |
1516 | * Need to quote the first # in the info string... | |
1517 | */ | |
1518 | ||
1519 | if ((temp = cupsFileWrite(fp, value, ptr - value)) < 0) | |
1520 | return (-1); | |
1521 | bytes += temp; | |
1522 | ||
1523 | if (cupsFilePutChar(fp, '\\') < 0) | |
1524 | return (-1); | |
1525 | bytes ++; | |
1526 | ||
1527 | if ((temp = cupsFilePuts(fp, ptr)) < 0) | |
1528 | return (-1); | |
1529 | bytes += temp; | |
1530 | } | |
1531 | else if ((temp = cupsFilePuts(fp, value)) < 0) | |
1532 | return (-1); | |
1533 | else | |
1534 | bytes += temp; | |
1535 | } | |
1536 | ||
1537 | if (cupsFilePutChar(fp, '\n') < 0) | |
1538 | return (-1); | |
1539 | else | |
1540 | return (bytes + 1); | |
1541 | } | |
1542 | ||
1543 | ||
ef416fc2 | 1544 | /* |
1545 | * 'cupsFilePuts()' - Write a string. | |
5a738aea MS |
1546 | * |
1547 | * Like the @code fputs@ function, no newline is appended to the string. | |
1548 | * | |
426c6a59 | 1549 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1550 | */ |
1551 | ||
5a738aea | 1552 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1553 | cupsFilePuts(cups_file_t *fp, /* I - CUPS file */ |
1554 | const char *s) /* I - String to write */ | |
1555 | { | |
2abf387c | 1556 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 1557 | |
1558 | ||
1559 | /* | |
1560 | * Range check input... | |
1561 | */ | |
1562 | ||
1563 | if (!fp || !s || (fp->mode != 'w' && fp->mode != 's')) | |
1564 | return (-1); | |
1565 | ||
1566 | /* | |
1567 | * Write the string... | |
1568 | */ | |
1569 | ||
b86bc4cf | 1570 | bytes = (int)strlen(s); |
ef416fc2 | 1571 | |
1572 | if (fp->mode == 's') | |
1573 | { | |
1574 | if (cups_write(fp, s, bytes) < 0) | |
1575 | return (-1); | |
1576 | ||
1577 | fp->pos += bytes; | |
1578 | ||
e07d4801 | 1579 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1580 | |
ef416fc2 | 1581 | return (bytes); |
1582 | } | |
1583 | ||
1584 | if ((fp->ptr + bytes) > fp->end) | |
1585 | if (cupsFileFlush(fp)) | |
1586 | return (-1); | |
1587 | ||
1588 | fp->pos += bytes; | |
1589 | ||
e07d4801 | 1590 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1591 | |
ef416fc2 | 1592 | if (bytes > sizeof(fp->buf)) |
1593 | { | |
1594 | #ifdef HAVE_LIBZ | |
1595 | if (fp->compressed) | |
1596 | return (cups_compress(fp, s, bytes)); | |
1597 | else | |
1598 | #endif /* HAVE_LIBZ */ | |
1599 | return (cups_write(fp, s, bytes)); | |
1600 | } | |
1601 | else | |
1602 | { | |
1603 | memcpy(fp->ptr, s, bytes); | |
1604 | fp->ptr += bytes; | |
1605 | return (bytes); | |
1606 | } | |
1607 | } | |
1608 | ||
1609 | ||
1610 | /* | |
1611 | * 'cupsFileRead()' - Read from a file. | |
5a738aea | 1612 | * |
426c6a59 | 1613 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1614 | */ |
1615 | ||
5a738aea | 1616 | ssize_t /* O - Number of bytes read or -1 on error */ |
ef416fc2 | 1617 | cupsFileRead(cups_file_t *fp, /* I - CUPS file */ |
1618 | char *buf, /* O - Buffer */ | |
1619 | size_t bytes) /* I - Number of bytes to read */ | |
1620 | { | |
2abf387c | 1621 | size_t total; /* Total bytes read */ |
1622 | ssize_t count; /* Bytes read */ | |
ef416fc2 | 1623 | |
1624 | ||
e07d4801 | 1625 | DEBUG_printf(("2cupsFileRead(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 1626 | CUPS_LLCAST bytes)); |
ef416fc2 | 1627 | |
1628 | /* | |
1629 | * Range check input... | |
1630 | */ | |
1631 | ||
82f97232 | 1632 | if (!fp || !buf || (fp->mode != 'r' && fp->mode != 's')) |
ef416fc2 | 1633 | return (-1); |
1634 | ||
1635 | if (bytes == 0) | |
1636 | return (0); | |
1637 | ||
1638 | /* | |
1639 | * Loop until all bytes are read... | |
1640 | */ | |
1641 | ||
1642 | total = 0; | |
1643 | while (bytes > 0) | |
1644 | { | |
1645 | if (fp->ptr >= fp->end) | |
1646 | if (cups_fill(fp) <= 0) | |
1647 | { | |
e07d4801 MS |
1648 | DEBUG_printf(("4cupsFileRead: cups_fill() returned -1, total=" |
1649 | CUPS_LLFMT, CUPS_LLCAST total)); | |
ef416fc2 | 1650 | |
1651 | if (total > 0) | |
b86bc4cf | 1652 | return ((ssize_t)total); |
ef416fc2 | 1653 | else |
1654 | return (-1); | |
1655 | } | |
1656 | ||
b86bc4cf | 1657 | count = (ssize_t)(fp->end - fp->ptr); |
1658 | if (count > (ssize_t)bytes) | |
1659 | count = (ssize_t)bytes; | |
ef416fc2 | 1660 | |
1661 | memcpy(buf, fp->ptr, count); | |
1662 | fp->ptr += count; | |
634763e8 MS |
1663 | fp->pos += count; |
1664 | ||
e07d4801 | 1665 | DEBUG_printf(("4cupsFileRead: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1666 | |
1667 | /* | |
1668 | * Update the counts for the last read... | |
1669 | */ | |
1670 | ||
1671 | bytes -= count; | |
1672 | total += count; | |
1673 | buf += count; | |
1674 | } | |
1675 | ||
1676 | /* | |
1677 | * Return the total number of bytes read... | |
1678 | */ | |
1679 | ||
e07d4801 | 1680 | DEBUG_printf(("3cupsFileRead: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
ef416fc2 | 1681 | |
b86bc4cf | 1682 | return ((ssize_t)total); |
ef416fc2 | 1683 | } |
1684 | ||
1685 | ||
1686 | /* | |
5a738aea MS |
1687 | * 'cupsFileRewind()' - Set the current file position to the beginning of the |
1688 | * file. | |
1689 | * | |
426c6a59 | 1690 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1691 | */ |
1692 | ||
5a738aea | 1693 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1694 | cupsFileRewind(cups_file_t *fp) /* I - CUPS file */ |
1695 | { | |
80ca4592 | 1696 | /* |
1697 | * Range check input... | |
1698 | */ | |
1699 | ||
e07d4801 MS |
1700 | DEBUG_printf(("cupsFileRewind(fp=%p)", fp)); |
1701 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); | |
634763e8 | 1702 | |
80ca4592 | 1703 | if (!fp || fp->mode != 'r') |
1704 | return (-1); | |
1705 | ||
1706 | /* | |
1707 | * Handle special cases... | |
1708 | */ | |
1709 | ||
634763e8 | 1710 | if (fp->bufpos == 0) |
80ca4592 | 1711 | { |
1712 | /* | |
1713 | * No seeking necessary... | |
1714 | */ | |
1715 | ||
634763e8 MS |
1716 | fp->pos = 0; |
1717 | ||
80ca4592 | 1718 | if (fp->ptr) |
1719 | { | |
1720 | fp->ptr = fp->buf; | |
1721 | fp->eof = 0; | |
1722 | } | |
1723 | ||
e07d4801 | 1724 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1725 | |
80ca4592 | 1726 | return (0); |
1727 | } | |
1728 | ||
1729 | /* | |
1730 | * Otherwise, seek in the file and cleanup any compression buffers... | |
1731 | */ | |
1732 | ||
1733 | #ifdef HAVE_LIBZ | |
1734 | if (fp->compressed) | |
1735 | { | |
1736 | inflateEnd(&fp->stream); | |
1737 | fp->compressed = 0; | |
1738 | } | |
1739 | #endif /* HAVE_LIBZ */ | |
1740 | ||
c9fc04c6 MS |
1741 | if (lseek(fp->fd, 0, SEEK_SET)) |
1742 | { | |
e07d4801 | 1743 | DEBUG_printf(("1cupsFileRewind: lseek failed: %s", strerror(errno))); |
c9fc04c6 MS |
1744 | return (-1); |
1745 | } | |
80ca4592 | 1746 | |
634763e8 MS |
1747 | fp->bufpos = 0; |
1748 | fp->pos = 0; | |
1749 | fp->ptr = NULL; | |
1750 | fp->end = NULL; | |
1751 | fp->eof = 0; | |
1752 | ||
e07d4801 | 1753 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
80ca4592 | 1754 | |
1755 | return (0); | |
ef416fc2 | 1756 | } |
1757 | ||
1758 | ||
1759 | /* | |
1760 | * 'cupsFileSeek()' - Seek in a file. | |
5a738aea | 1761 | * |
426c6a59 | 1762 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1763 | */ |
1764 | ||
5a738aea | 1765 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1766 | cupsFileSeek(cups_file_t *fp, /* I - CUPS file */ |
1767 | off_t pos) /* I - Position in file */ | |
1768 | { | |
2abf387c | 1769 | ssize_t bytes; /* Number bytes in buffer */ |
ef416fc2 | 1770 | |
1771 | ||
e07d4801 | 1772 | DEBUG_printf(("cupsFileSeek(fp=%p, pos=" CUPS_LLFMT ")", fp, |
634763e8 | 1773 | CUPS_LLCAST pos)); |
e07d4801 MS |
1774 | DEBUG_printf(("2cupsFileSeek: fp->pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
1775 | DEBUG_printf(("2cupsFileSeek: fp->ptr=%p, fp->end=%p", fp->ptr, fp->end)); | |
ef416fc2 | 1776 | |
1777 | /* | |
1778 | * Range check input... | |
1779 | */ | |
1780 | ||
1781 | if (!fp || pos < 0 || fp->mode != 'r') | |
1782 | return (-1); | |
1783 | ||
80ca4592 | 1784 | /* |
1785 | * Handle special cases... | |
1786 | */ | |
1787 | ||
1788 | if (pos == 0) | |
1789 | return (cupsFileRewind(fp)); | |
1790 | ||
634763e8 | 1791 | if (fp->ptr) |
b423cd4c | 1792 | { |
634763e8 | 1793 | bytes = (ssize_t)(fp->end - fp->buf); |
b423cd4c | 1794 | |
e07d4801 | 1795 | DEBUG_printf(("2cupsFileSeek: bytes=" CUPS_LLFMT, CUPS_LLCAST bytes)); |
c168a833 | 1796 | |
634763e8 | 1797 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
b423cd4c | 1798 | { |
634763e8 MS |
1799 | /* |
1800 | * No seeking necessary... | |
1801 | */ | |
1802 | ||
1803 | fp->pos = pos; | |
1804 | fp->ptr = fp->buf + pos - fp->bufpos; | |
b423cd4c | 1805 | fp->eof = 0; |
b423cd4c | 1806 | |
634763e8 MS |
1807 | return (pos); |
1808 | } | |
b423cd4c | 1809 | } |
1810 | ||
80ca4592 | 1811 | #ifdef HAVE_LIBZ |
1812 | if (!fp->compressed && !fp->ptr) | |
1813 | { | |
1814 | /* | |
1815 | * Preload a buffer to determine whether the file is compressed... | |
1816 | */ | |
1817 | ||
1818 | if (cups_fill(fp) < 0) | |
1819 | return (-1); | |
1820 | } | |
1821 | #endif /* HAVE_LIBZ */ | |
1822 | ||
ef416fc2 | 1823 | /* |
634763e8 | 1824 | * Seek forwards or backwards... |
ef416fc2 | 1825 | */ |
1826 | ||
ef416fc2 | 1827 | fp->eof = 0; |
1828 | ||
634763e8 | 1829 | if (pos < fp->bufpos) |
ef416fc2 | 1830 | { |
1831 | /* | |
1832 | * Need to seek backwards... | |
1833 | */ | |
1834 | ||
e07d4801 | 1835 | DEBUG_puts("2cupsFileSeek: SEEK BACKWARDS"); |
80ca4592 | 1836 | |
ef416fc2 | 1837 | #ifdef HAVE_LIBZ |
1838 | if (fp->compressed) | |
1839 | { | |
1840 | inflateEnd(&fp->stream); | |
1841 | ||
1842 | lseek(fp->fd, 0, SEEK_SET); | |
634763e8 MS |
1843 | fp->bufpos = 0; |
1844 | fp->pos = 0; | |
1845 | fp->ptr = NULL; | |
1846 | fp->end = NULL; | |
ef416fc2 | 1847 | |
1848 | while ((bytes = cups_fill(fp)) > 0) | |
634763e8 | 1849 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1850 | break; |
1851 | ||
1852 | if (bytes <= 0) | |
1853 | return (-1); | |
80ca4592 | 1854 | |
634763e8 MS |
1855 | fp->ptr = fp->buf + pos - fp->bufpos; |
1856 | fp->pos = pos; | |
ef416fc2 | 1857 | } |
1858 | else | |
1859 | #endif /* HAVE_LIBZ */ | |
1860 | { | |
634763e8 MS |
1861 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1862 | fp->pos = fp->bufpos; | |
1863 | fp->ptr = NULL; | |
1864 | fp->end = NULL; | |
80ca4592 | 1865 | |
e07d4801 | 1866 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1867 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1868 | } |
1869 | } | |
634763e8 | 1870 | else |
ef416fc2 | 1871 | { |
1872 | /* | |
1873 | * Need to seek forwards... | |
1874 | */ | |
1875 | ||
e07d4801 | 1876 | DEBUG_puts("2cupsFileSeek: SEEK FORWARDS"); |
80ca4592 | 1877 | |
ef416fc2 | 1878 | #ifdef HAVE_LIBZ |
80ca4592 | 1879 | if (fp->compressed) |
ef416fc2 | 1880 | { |
1881 | while ((bytes = cups_fill(fp)) > 0) | |
80ca4592 | 1882 | { |
634763e8 | 1883 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1884 | break; |
80ca4592 | 1885 | } |
ef416fc2 | 1886 | |
1887 | if (bytes <= 0) | |
1888 | return (-1); | |
80ca4592 | 1889 | |
634763e8 MS |
1890 | fp->ptr = fp->buf + pos - fp->bufpos; |
1891 | fp->pos = pos; | |
ef416fc2 | 1892 | } |
1893 | else | |
1894 | #endif /* HAVE_LIBZ */ | |
1895 | { | |
634763e8 MS |
1896 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1897 | fp->pos = fp->bufpos; | |
1898 | fp->ptr = NULL; | |
1899 | fp->end = NULL; | |
80ca4592 | 1900 | |
e07d4801 | 1901 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1902 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1903 | } |
1904 | } | |
ef416fc2 | 1905 | |
e07d4801 | 1906 | DEBUG_printf(("2cupsFileSeek: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1907 | |
1908 | return (fp->pos); | |
1909 | } | |
1910 | ||
1911 | ||
80ca4592 | 1912 | /* |
1913 | * 'cupsFileStderr()' - Return a CUPS file associated with stderr. | |
5a738aea | 1914 | * |
426c6a59 | 1915 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 1916 | */ |
1917 | ||
5a738aea | 1918 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1919 | cupsFileStderr(void) |
1920 | { | |
1921 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1922 | ||
1923 | ||
1924 | /* | |
1925 | * Open file descriptor 2 as needed... | |
1926 | */ | |
1927 | ||
1928 | if (!cg->stdio_files[2]) | |
1929 | { | |
1930 | /* | |
1931 | * Flush any pending output on the stdio file... | |
1932 | */ | |
1933 | ||
1934 | fflush(stderr); | |
1935 | ||
1936 | /* | |
1937 | * Open file descriptor 2... | |
1938 | */ | |
1939 | ||
1940 | if ((cg->stdio_files[2] = cupsFileOpenFd(2, "w")) != NULL) | |
1941 | cg->stdio_files[2]->is_stdio = 1; | |
1942 | } | |
1943 | ||
1944 | return (cg->stdio_files[2]); | |
1945 | } | |
1946 | ||
1947 | ||
1948 | /* | |
1949 | * 'cupsFileStdin()' - Return a CUPS file associated with stdin. | |
5a738aea | 1950 | * |
426c6a59 | 1951 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 1952 | */ |
1953 | ||
5a738aea | 1954 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1955 | cupsFileStdin(void) |
1956 | { | |
1957 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1958 | ||
1959 | ||
1960 | /* | |
1961 | * Open file descriptor 0 as needed... | |
1962 | */ | |
1963 | ||
1964 | if (!cg->stdio_files[0]) | |
1965 | { | |
1966 | /* | |
1967 | * Open file descriptor 0... | |
1968 | */ | |
1969 | ||
1970 | if ((cg->stdio_files[0] = cupsFileOpenFd(0, "r")) != NULL) | |
1971 | cg->stdio_files[0]->is_stdio = 1; | |
1972 | } | |
1973 | ||
1974 | return (cg->stdio_files[0]); | |
1975 | } | |
1976 | ||
1977 | ||
1978 | /* | |
1979 | * 'cupsFileStdout()' - Return a CUPS file associated with stdout. | |
5a738aea | 1980 | * |
426c6a59 | 1981 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 1982 | */ |
1983 | ||
5a738aea | 1984 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1985 | cupsFileStdout(void) |
1986 | { | |
1987 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1988 | ||
1989 | ||
1990 | /* | |
1991 | * Open file descriptor 1 as needed... | |
1992 | */ | |
1993 | ||
1994 | if (!cg->stdio_files[1]) | |
1995 | { | |
1996 | /* | |
1997 | * Flush any pending output on the stdio file... | |
1998 | */ | |
1999 | ||
2000 | fflush(stdout); | |
2001 | ||
2002 | /* | |
2003 | * Open file descriptor 1... | |
2004 | */ | |
2005 | ||
2006 | if ((cg->stdio_files[1] = cupsFileOpenFd(1, "w")) != NULL) | |
2007 | cg->stdio_files[1]->is_stdio = 1; | |
2008 | } | |
2009 | ||
2010 | return (cg->stdio_files[1]); | |
2011 | } | |
2012 | ||
2013 | ||
ef416fc2 | 2014 | /* |
2015 | * 'cupsFileTell()' - Return the current file position. | |
5a738aea | 2016 | * |
426c6a59 | 2017 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 2018 | */ |
2019 | ||
2020 | off_t /* O - File position */ | |
2021 | cupsFileTell(cups_file_t *fp) /* I - CUPS file */ | |
2022 | { | |
e07d4801 MS |
2023 | DEBUG_printf(("2cupsFileTell(fp=%p)", fp)); |
2024 | DEBUG_printf(("3cupsFileTell: pos=" CUPS_LLFMT, | |
2025 | CUPS_LLCAST (fp ? fp->pos : -1))); | |
634763e8 | 2026 | |
80ca4592 | 2027 | return (fp ? fp->pos : 0); |
ef416fc2 | 2028 | } |
2029 | ||
2030 | ||
2031 | /* | |
2032 | * 'cupsFileUnlock()' - Unlock access to a file. | |
5a738aea | 2033 | * |
426c6a59 | 2034 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 2035 | */ |
2036 | ||
2037 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 2038 | cupsFileUnlock(cups_file_t *fp) /* I - CUPS file */ |
ef416fc2 | 2039 | { |
2040 | /* | |
2041 | * Range check... | |
2042 | */ | |
2043 | ||
e07d4801 | 2044 | DEBUG_printf(("cupsFileUnlock(fp=%p)", fp)); |
634763e8 | 2045 | |
ef416fc2 | 2046 | if (!fp || fp->mode == 's') |
2047 | return (-1); | |
2048 | ||
2049 | /* | |
2050 | * Unlock... | |
2051 | */ | |
2052 | ||
2053 | #ifdef WIN32 | |
536bc2c6 | 2054 | return (_locking(fp->fd, _LK_UNLCK, 0)); |
ef416fc2 | 2055 | #else |
2056 | return (lockf(fp->fd, F_ULOCK, 0)); | |
2057 | #endif /* WIN32 */ | |
2058 | } | |
2059 | ||
2060 | ||
2061 | /* | |
2062 | * 'cupsFileWrite()' - Write to a file. | |
5a738aea | 2063 | * |
426c6a59 | 2064 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 2065 | */ |
2066 | ||
5a738aea | 2067 | ssize_t /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 2068 | cupsFileWrite(cups_file_t *fp, /* I - CUPS file */ |
2069 | const char *buf, /* I - Buffer */ | |
2070 | size_t bytes) /* I - Number of bytes to write */ | |
2071 | { | |
2072 | /* | |
2073 | * Range check input... | |
2074 | */ | |
2075 | ||
e07d4801 | 2076 | DEBUG_printf(("2cupsFileWrite(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", |
634763e8 MS |
2077 | fp, buf, CUPS_LLCAST bytes)); |
2078 | ||
82f97232 | 2079 | if (!fp || !buf || (fp->mode != 'w' && fp->mode != 's')) |
ef416fc2 | 2080 | return (-1); |
2081 | ||
2082 | if (bytes == 0) | |
2083 | return (0); | |
2084 | ||
2085 | /* | |
2086 | * Write the buffer... | |
2087 | */ | |
2088 | ||
2089 | if (fp->mode == 's') | |
2090 | { | |
2091 | if (cups_write(fp, buf, bytes) < 0) | |
2092 | return (-1); | |
2093 | ||
b86bc4cf | 2094 | fp->pos += (off_t)bytes; |
ef416fc2 | 2095 | |
e07d4801 | 2096 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2097 | |
b86bc4cf | 2098 | return ((ssize_t)bytes); |
ef416fc2 | 2099 | } |
2100 | ||
2101 | if ((fp->ptr + bytes) > fp->end) | |
2102 | if (cupsFileFlush(fp)) | |
2103 | return (-1); | |
2104 | ||
b86bc4cf | 2105 | fp->pos += (off_t)bytes; |
ef416fc2 | 2106 | |
e07d4801 | 2107 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2108 | |
ef416fc2 | 2109 | if (bytes > sizeof(fp->buf)) |
2110 | { | |
2111 | #ifdef HAVE_LIBZ | |
2112 | if (fp->compressed) | |
2113 | return (cups_compress(fp, buf, bytes)); | |
2114 | else | |
2115 | #endif /* HAVE_LIBZ */ | |
2116 | return (cups_write(fp, buf, bytes)); | |
2117 | } | |
2118 | else | |
2119 | { | |
2120 | memcpy(fp->ptr, buf, bytes); | |
2121 | fp->ptr += bytes; | |
b86bc4cf | 2122 | return ((ssize_t)bytes); |
ef416fc2 | 2123 | } |
2124 | } | |
2125 | ||
2126 | ||
2127 | #ifdef HAVE_LIBZ | |
2128 | /* | |
22c9029b | 2129 | * 'cups_compress()' - Compress a buffer of data. |
ef416fc2 | 2130 | */ |
2131 | ||
2132 | static ssize_t /* O - Number of bytes written or -1 */ | |
2133 | cups_compress(cups_file_t *fp, /* I - CUPS file */ | |
2134 | const char *buf, /* I - Buffer */ | |
2135 | size_t bytes) /* I - Number bytes */ | |
2136 | { | |
e07d4801 | 2137 | DEBUG_printf(("7cups_compress(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2138 | CUPS_LLCAST bytes)); |
ecdc0628 | 2139 | |
ef416fc2 | 2140 | /* |
2141 | * Update the CRC... | |
2142 | */ | |
2143 | ||
2144 | fp->crc = crc32(fp->crc, (const Bytef *)buf, bytes); | |
2145 | ||
2146 | /* | |
2147 | * Deflate the bytes... | |
2148 | */ | |
2149 | ||
2150 | fp->stream.next_in = (Bytef *)buf; | |
2151 | fp->stream.avail_in = bytes; | |
2152 | ||
2153 | while (fp->stream.avail_in > 0) | |
2154 | { | |
2155 | /* | |
2156 | * Flush the current buffer... | |
2157 | */ | |
2158 | ||
e07d4801 | 2159 | DEBUG_printf(("9cups_compress: avail_in=%d, avail_out=%d", |
634763e8 | 2160 | fp->stream.avail_in, fp->stream.avail_out)); |
ecdc0628 | 2161 | |
ef416fc2 | 2162 | if (fp->stream.avail_out < (int)(sizeof(fp->cbuf) / 8)) |
2163 | { | |
2164 | if (cups_write(fp, (char *)fp->cbuf, fp->stream.next_out - fp->cbuf) < 0) | |
2165 | return (-1); | |
ecdc0628 | 2166 | |
2167 | fp->stream.next_out = fp->cbuf; | |
2168 | fp->stream.avail_out = sizeof(fp->cbuf); | |
ef416fc2 | 2169 | } |
2170 | ||
2171 | deflate(&(fp->stream), Z_NO_FLUSH); | |
2172 | } | |
2173 | ||
2174 | return (bytes); | |
2175 | } | |
2176 | #endif /* HAVE_LIBZ */ | |
2177 | ||
2178 | ||
2179 | /* | |
22c9029b | 2180 | * 'cups_fill()' - Fill the input buffer. |
ef416fc2 | 2181 | */ |
2182 | ||
2183 | static ssize_t /* O - Number of bytes or -1 */ | |
2184 | cups_fill(cups_file_t *fp) /* I - CUPS file */ | |
2185 | { | |
2186 | ssize_t bytes; /* Number of bytes read */ | |
2187 | #ifdef HAVE_LIBZ | |
c277e2f8 | 2188 | int status; /* Decompression status */ |
ef416fc2 | 2189 | const unsigned char *ptr, /* Pointer into buffer */ |
2190 | *end; /* End of buffer */ | |
2191 | #endif /* HAVE_LIBZ */ | |
2192 | ||
2193 | ||
e07d4801 MS |
2194 | DEBUG_printf(("7cups_fill(fp=%p)", fp)); |
2195 | DEBUG_printf(("9cups_fill: fp->ptr=%p, fp->end=%p, fp->buf=%p, " | |
2196 | "fp->bufpos=" CUPS_LLFMT ", fp->eof=%d", | |
634763e8 | 2197 | fp->ptr, fp->end, fp->buf, CUPS_LLCAST fp->bufpos, fp->eof)); |
ef416fc2 | 2198 | |
2199 | if (fp->ptr && fp->end) | |
c9fc04c6 | 2200 | fp->bufpos += fp->end - fp->buf; |
ef416fc2 | 2201 | |
2202 | #ifdef HAVE_LIBZ | |
e07d4801 | 2203 | DEBUG_printf(("9cups_fill: fp->compressed=%d", fp->compressed)); |
b423cd4c | 2204 | |
ef416fc2 | 2205 | while (!fp->ptr || fp->compressed) |
2206 | { | |
2207 | /* | |
2208 | * Check to see if we have read any data yet; if not, see if we have a | |
2209 | * compressed file... | |
2210 | */ | |
2211 | ||
2212 | if (!fp->ptr) | |
2213 | { | |
2214 | /* | |
2215 | * Reset the file position in case we are seeking... | |
2216 | */ | |
2217 | ||
2218 | fp->compressed = 0; | |
ef416fc2 | 2219 | |
2220 | /* | |
2221 | * Read the first bytes in the file to determine if we have a gzip'd | |
2222 | * file... | |
2223 | */ | |
2224 | ||
fa73b229 | 2225 | if ((bytes = cups_read(fp, (char *)fp->buf, sizeof(fp->buf))) < 0) |
ef416fc2 | 2226 | { |
2227 | /* | |
2228 | * Can't read from file! | |
2229 | */ | |
2230 | ||
e07d4801 | 2231 | DEBUG_printf(("9cups_fill: cups_read() returned " CUPS_LLFMT, |
b423cd4c | 2232 | CUPS_LLCAST bytes)); |
2233 | ||
ef416fc2 | 2234 | return (-1); |
2235 | } | |
2236 | ||
fa73b229 | 2237 | if (bytes < 10 || fp->buf[0] != 0x1f || |
e00b005a | 2238 | (fp->buf[1] & 255) != 0x8b || |
fa73b229 | 2239 | fp->buf[2] != 8 || (fp->buf[3] & 0xe0) != 0) |
ef416fc2 | 2240 | { |
2241 | /* | |
2242 | * Not a gzip'd file! | |
2243 | */ | |
2244 | ||
ef416fc2 | 2245 | fp->ptr = fp->buf; |
2246 | fp->end = fp->buf + bytes; | |
2247 | ||
e07d4801 | 2248 | DEBUG_printf(("9cups_fill: Returning " CUPS_LLFMT, |
c9fc04c6 | 2249 | CUPS_LLCAST bytes)); |
b423cd4c | 2250 | |
ef416fc2 | 2251 | return (bytes); |
2252 | } | |
2253 | ||
2254 | /* | |
2255 | * Parse header junk: extra data, original name, and comment... | |
2256 | */ | |
2257 | ||
fa73b229 | 2258 | ptr = (unsigned char *)fp->buf + 10; |
2259 | end = (unsigned char *)fp->buf + bytes; | |
ef416fc2 | 2260 | |
fa73b229 | 2261 | if (fp->buf[3] & 0x04) |
ef416fc2 | 2262 | { |
2263 | /* | |
2264 | * Skip extra data... | |
2265 | */ | |
2266 | ||
2267 | if ((ptr + 2) > end) | |
2268 | { | |
2269 | /* | |
2270 | * Can't read from file! | |
2271 | */ | |
2272 | ||
2273 | return (-1); | |
2274 | } | |
2275 | ||
2276 | bytes = ((unsigned char)ptr[1] << 8) | (unsigned char)ptr[0]; | |
2277 | ptr += 2 + bytes; | |
2278 | ||
2279 | if (ptr > end) | |
2280 | { | |
2281 | /* | |
2282 | * Can't read from file! | |
2283 | */ | |
2284 | ||
2285 | return (-1); | |
2286 | } | |
2287 | } | |
2288 | ||
fa73b229 | 2289 | if (fp->buf[3] & 0x08) |
ef416fc2 | 2290 | { |
2291 | /* | |
2292 | * Skip original name data... | |
2293 | */ | |
2294 | ||
2295 | while (ptr < end && *ptr) | |
2296 | ptr ++; | |
2297 | ||
2298 | if (ptr < end) | |
2299 | ptr ++; | |
2300 | else | |
2301 | { | |
2302 | /* | |
2303 | * Can't read from file! | |
2304 | */ | |
2305 | ||
2306 | return (-1); | |
2307 | } | |
2308 | } | |
2309 | ||
fa73b229 | 2310 | if (fp->buf[3] & 0x10) |
ef416fc2 | 2311 | { |
2312 | /* | |
2313 | * Skip comment data... | |
2314 | */ | |
2315 | ||
2316 | while (ptr < end && *ptr) | |
2317 | ptr ++; | |
2318 | ||
2319 | if (ptr < end) | |
2320 | ptr ++; | |
2321 | else | |
2322 | { | |
2323 | /* | |
2324 | * Can't read from file! | |
2325 | */ | |
2326 | ||
2327 | return (-1); | |
2328 | } | |
2329 | } | |
2330 | ||
fa73b229 | 2331 | if (fp->buf[3] & 0x02) |
ef416fc2 | 2332 | { |
2333 | /* | |
2334 | * Skip header CRC data... | |
2335 | */ | |
2336 | ||
2337 | ptr += 2; | |
2338 | ||
2339 | if (ptr > end) | |
2340 | { | |
2341 | /* | |
2342 | * Can't read from file! | |
2343 | */ | |
2344 | ||
2345 | return (-1); | |
2346 | } | |
2347 | } | |
2348 | ||
fa73b229 | 2349 | /* |
2350 | * Copy the flate-compressed data to the compression buffer... | |
2351 | */ | |
2352 | ||
2353 | if ((bytes = end - ptr) > 0) | |
2354 | memcpy(fp->cbuf, ptr, bytes); | |
2355 | ||
ef416fc2 | 2356 | /* |
2357 | * Setup the decompressor data... | |
2358 | */ | |
2359 | ||
2360 | fp->stream.zalloc = (alloc_func)0; | |
2361 | fp->stream.zfree = (free_func)0; | |
2362 | fp->stream.opaque = (voidpf)0; | |
fa73b229 | 2363 | fp->stream.next_in = (Bytef *)fp->cbuf; |
ef416fc2 | 2364 | fp->stream.next_out = NULL; |
fa73b229 | 2365 | fp->stream.avail_in = bytes; |
ef416fc2 | 2366 | fp->stream.avail_out = 0; |
2367 | fp->crc = crc32(0L, Z_NULL, 0); | |
2368 | ||
2369 | if (inflateInit2(&(fp->stream), -15) != Z_OK) | |
2370 | return (-1); | |
2371 | ||
2372 | fp->compressed = 1; | |
2373 | } | |
2374 | ||
2375 | if (fp->compressed) | |
2376 | { | |
2377 | /* | |
2378 | * If we have reached end-of-file, return immediately... | |
2379 | */ | |
2380 | ||
2381 | if (fp->eof) | |
2382 | return (-1); | |
2383 | ||
2384 | /* | |
2385 | * Fill the decompression buffer as needed... | |
2386 | */ | |
2387 | ||
2388 | if (fp->stream.avail_in == 0) | |
2389 | { | |
2390 | if ((bytes = cups_read(fp, (char *)fp->cbuf, sizeof(fp->cbuf))) <= 0) | |
2391 | return (-1); | |
2392 | ||
2393 | fp->stream.next_in = fp->cbuf; | |
2394 | fp->stream.avail_in = bytes; | |
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, | |
2408 | fp->stream.next_out - (Bytef *)fp->buf); | |
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 */ | |
2418 | ||
2419 | ||
2420 | if (read(fp->fd, trailer, sizeof(trailer)) < sizeof(trailer)) | |
2421 | { | |
2422 | /* | |
2423 | * Can't get it, so mark end-of-file... | |
2424 | */ | |
2425 | ||
2426 | fp->eof = 1; | |
ef416fc2 | 2427 | } |
fa73b229 | 2428 | else |
2429 | { | |
2430 | tcrc = (((((trailer[3] << 8) | trailer[2]) << 8) | trailer[1]) << 8) | | |
2431 | trailer[0]; | |
ef416fc2 | 2432 | |
fa73b229 | 2433 | if (tcrc != fp->crc) |
2434 | { | |
2435 | /* | |
2436 | * Bad CRC, mark end-of-file... | |
2437 | */ | |
2438 | ||
e07d4801 | 2439 | DEBUG_printf(("9cups_fill: tcrc=%08x, fp->crc=%08x", |
c277e2f8 MS |
2440 | (unsigned int)tcrc, (unsigned int)fp->crc)); |
2441 | ||
fa73b229 | 2442 | fp->eof = 1; |
2443 | ||
2444 | return (-1); | |
2445 | } | |
ef416fc2 | 2446 | |
ef416fc2 | 2447 | /* |
fa73b229 | 2448 | * Otherwise, reset the compressed flag so that we re-read the |
2449 | * file header... | |
ef416fc2 | 2450 | */ |
ef416fc2 | 2451 | |
fa73b229 | 2452 | fp->compressed = 0; |
ef416fc2 | 2453 | } |
ef416fc2 | 2454 | } |
2455 | ||
2456 | bytes = sizeof(fp->buf) - fp->stream.avail_out; | |
2457 | ||
2458 | /* | |
2459 | * Return the decompressed data... | |
2460 | */ | |
2461 | ||
2462 | fp->ptr = fp->buf; | |
2463 | fp->end = fp->buf + bytes; | |
2464 | ||
fa73b229 | 2465 | if (bytes) |
2466 | return (bytes); | |
ef416fc2 | 2467 | } |
2468 | } | |
2469 | #endif /* HAVE_LIBZ */ | |
2470 | ||
2471 | /* | |
2472 | * Read a buffer's full of data... | |
2473 | */ | |
2474 | ||
2475 | if ((bytes = cups_read(fp, fp->buf, sizeof(fp->buf))) <= 0) | |
2476 | { | |
2477 | /* | |
2478 | * Can't read from file! | |
2479 | */ | |
2480 | ||
2481 | fp->eof = 1; | |
2482 | fp->ptr = fp->buf; | |
2483 | fp->end = fp->buf; | |
2484 | ||
2485 | return (-1); | |
2486 | } | |
2487 | ||
2488 | /* | |
2489 | * Return the bytes we read... | |
2490 | */ | |
2491 | ||
2492 | fp->eof = 0; | |
2493 | fp->ptr = fp->buf; | |
2494 | fp->end = fp->buf + bytes; | |
2495 | ||
2496 | return (bytes); | |
2497 | } | |
2498 | ||
2499 | ||
c7017ecc MS |
2500 | /* |
2501 | * 'cups_open()' - Safely open a file for writing. | |
2502 | * | |
2503 | * We don't allow appending to directories or files that are hard-linked or | |
2504 | * symlinked. | |
2505 | */ | |
2506 | ||
2507 | static int /* O - File descriptor or -1 otherwise */ | |
2508 | cups_open(const char *filename, /* I - Filename */ | |
2509 | int mode) /* I - Open mode */ | |
2510 | { | |
2511 | int fd; /* File descriptor */ | |
2512 | struct stat fileinfo; /* File information */ | |
2513 | #ifndef WIN32 | |
2514 | struct stat linkinfo; /* Link information */ | |
2515 | #endif /* !WIN32 */ | |
2516 | ||
2517 | ||
2518 | /* | |
2519 | * Open the file... | |
2520 | */ | |
2521 | ||
2522 | if ((fd = open(filename, mode, 0666)) < 0) | |
2523 | return (-1); | |
2524 | ||
2525 | /* | |
2526 | * Then verify that the file descriptor doesn't point to a directory or hard- | |
2527 | * linked file. | |
2528 | */ | |
2529 | ||
2530 | if (fstat(fd, &fileinfo)) | |
2531 | { | |
2532 | close(fd); | |
2533 | return (-1); | |
2534 | } | |
2535 | ||
2536 | if (fileinfo.st_nlink != 1) | |
2537 | { | |
2538 | close(fd); | |
2539 | errno = EPERM; | |
2540 | return (-1); | |
2541 | } | |
2542 | ||
2543 | #ifdef WIN32 | |
2544 | if (fileinfo.st_mode & _S_IFDIR) | |
2545 | #else | |
2546 | if (S_ISDIR(fileinfo.st_mode)) | |
2547 | #endif /* WIN32 */ | |
2548 | { | |
2549 | close(fd); | |
2550 | errno = EISDIR; | |
2551 | return (-1); | |
2552 | } | |
2553 | ||
2554 | #ifndef WIN32 | |
2555 | /* | |
2556 | * Then use lstat to determine whether the filename is a symlink... | |
2557 | */ | |
2558 | ||
2559 | if (lstat(filename, &linkinfo)) | |
2560 | { | |
2561 | close(fd); | |
2562 | return (-1); | |
2563 | } | |
2564 | ||
2565 | if (S_ISLNK(linkinfo.st_mode) || | |
2566 | fileinfo.st_dev != linkinfo.st_dev || | |
2567 | fileinfo.st_ino != linkinfo.st_ino || | |
2568 | #ifdef HAVE_ST_GEN | |
2569 | fileinfo.st_gen != linkinfo.st_gen || | |
2570 | #endif /* HAVE_ST_GEN */ | |
2571 | fileinfo.st_nlink != linkinfo.st_nlink || | |
2572 | fileinfo.st_mode != linkinfo.st_mode) | |
2573 | { | |
2574 | /* | |
2575 | * Yes, don't allow! | |
2576 | */ | |
2577 | ||
2578 | close(fd); | |
2579 | errno = EPERM; | |
2580 | return (-1); | |
2581 | } | |
2582 | #endif /* !WIN32 */ | |
2583 | ||
2584 | return (fd); | |
2585 | } | |
2586 | ||
2587 | ||
ef416fc2 | 2588 | /* |
2589 | * 'cups_read()' - Read from a file descriptor. | |
2590 | */ | |
2591 | ||
2592 | static ssize_t /* O - Number of bytes read or -1 */ | |
2593 | cups_read(cups_file_t *fp, /* I - CUPS file */ | |
2594 | char *buf, /* I - Buffer */ | |
2595 | size_t bytes) /* I - Number bytes */ | |
2596 | { | |
2597 | ssize_t total; /* Total bytes read */ | |
2598 | ||
2599 | ||
e07d4801 | 2600 | DEBUG_printf(("7cups_read(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
2601 | CUPS_LLCAST bytes)); |
2602 | ||
ef416fc2 | 2603 | /* |
2604 | * Loop until we read at least 0 bytes... | |
2605 | */ | |
2606 | ||
2607 | for (;;) | |
2608 | { | |
b86bc4cf | 2609 | #ifdef WIN32 |
2610 | if (fp->mode == 's') | |
2611 | total = (ssize_t)recv(fp->fd, buf, (unsigned)bytes, 0); | |
2612 | else | |
2613 | total = (ssize_t)read(fp->fd, buf, (unsigned)bytes); | |
2614 | #else | |
ef416fc2 | 2615 | if (fp->mode == 's') |
2616 | total = recv(fp->fd, buf, bytes, 0); | |
2617 | else | |
2618 | total = read(fp->fd, buf, bytes); | |
b86bc4cf | 2619 | #endif /* WIN32 */ |
ef416fc2 | 2620 | |
e07d4801 | 2621 | DEBUG_printf(("9cups_read: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
634763e8 | 2622 | |
ef416fc2 | 2623 | if (total >= 0) |
2624 | break; | |
2625 | ||
2626 | /* | |
2627 | * Reads can be interrupted by signals and unavailable resources... | |
2628 | */ | |
2629 | ||
2630 | if (errno == EAGAIN || errno == EINTR) | |
2631 | continue; | |
2632 | else | |
2633 | return (-1); | |
2634 | } | |
2635 | ||
2636 | /* | |
2637 | * Return the total number of bytes read... | |
2638 | */ | |
2639 | ||
2640 | return (total); | |
2641 | } | |
2642 | ||
2643 | ||
2644 | /* | |
2645 | * 'cups_write()' - Write to a file descriptor. | |
2646 | */ | |
2647 | ||
2648 | static ssize_t /* O - Number of bytes written or -1 */ | |
2649 | cups_write(cups_file_t *fp, /* I - CUPS file */ | |
2650 | const char *buf, /* I - Buffer */ | |
2651 | size_t bytes) /* I - Number bytes */ | |
2652 | { | |
2abf387c | 2653 | size_t total; /* Total bytes written */ |
2654 | ssize_t count; /* Count this time */ | |
ef416fc2 | 2655 | |
2656 | ||
e07d4801 | 2657 | DEBUG_printf(("7cups_write(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2658 | CUPS_LLCAST bytes)); |
ecdc0628 | 2659 | |
ef416fc2 | 2660 | /* |
2661 | * Loop until all bytes are written... | |
2662 | */ | |
2663 | ||
2664 | total = 0; | |
2665 | while (bytes > 0) | |
2666 | { | |
b86bc4cf | 2667 | #ifdef WIN32 |
2668 | if (fp->mode == 's') | |
2669 | count = (ssize_t)send(fp->fd, buf, (unsigned)bytes, 0); | |
2670 | else | |
2671 | count = (ssize_t)write(fp->fd, buf, (unsigned)bytes); | |
2672 | #else | |
ef416fc2 | 2673 | if (fp->mode == 's') |
2674 | count = send(fp->fd, buf, bytes, 0); | |
2675 | else | |
2676 | count = write(fp->fd, buf, bytes); | |
b86bc4cf | 2677 | #endif /* WIN32 */ |
ef416fc2 | 2678 | |
e07d4801 | 2679 | DEBUG_printf(("9cups_write: count=" CUPS_LLFMT, CUPS_LLCAST count)); |
634763e8 | 2680 | |
ef416fc2 | 2681 | if (count < 0) |
2682 | { | |
2683 | /* | |
2684 | * Writes can be interrupted by signals and unavailable resources... | |
2685 | */ | |
2686 | ||
2687 | if (errno == EAGAIN || errno == EINTR) | |
2688 | continue; | |
2689 | else | |
2690 | return (-1); | |
2691 | } | |
2692 | ||
2693 | /* | |
2694 | * Update the counts for the last write call... | |
2695 | */ | |
2696 | ||
2697 | bytes -= count; | |
2698 | total += count; | |
2699 | buf += count; | |
2700 | } | |
2701 | ||
2702 | /* | |
2703 | * Return the total number of bytes written... | |
2704 | */ | |
2705 | ||
b86bc4cf | 2706 | return ((ssize_t)total); |
ef416fc2 | 2707 | } |
2708 | ||
2709 | ||
2710 | /* | |
75bd9771 | 2711 | * End of "$Id: file.c 7672 2008-06-18 22:03:02Z mike $". |
ef416fc2 | 2712 | */ |