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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 */ | |
f228370c | 92 | |
22c9029b MS |
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 | ||
88f9aafc MS |
101 | /* |
102 | * Does the filename contain a relative path ("../")? | |
103 | */ | |
104 | ||
105 | if (strstr(filename, "../")) | |
106 | { | |
107 | /* | |
108 | * Yes, fail it! | |
109 | */ | |
110 | ||
111 | result = _CUPS_FILE_CHECK_RELATIVE_PATH; | |
112 | goto finishup; | |
113 | } | |
114 | ||
22c9029b MS |
115 | /* |
116 | * Does the program even exist and is it accessible? | |
117 | */ | |
118 | ||
119 | if (stat(filename, &fileinfo)) | |
120 | { | |
121 | /* | |
122 | * Nope... | |
123 | */ | |
124 | ||
125 | result = _CUPS_FILE_CHECK_MISSING; | |
126 | goto finishup; | |
127 | } | |
128 | ||
129 | /* | |
130 | * Check the execute bit... | |
131 | */ | |
132 | ||
133 | result = _CUPS_FILE_CHECK_OK; | |
134 | ||
135 | switch (filetype) | |
136 | { | |
137 | case _CUPS_FILE_CHECK_DIRECTORY : | |
138 | if (!S_ISDIR(fileinfo.st_mode)) | |
139 | result = _CUPS_FILE_CHECK_WRONG_TYPE; | |
140 | break; | |
141 | ||
142 | default : | |
143 | if (!S_ISREG(fileinfo.st_mode)) | |
144 | result = _CUPS_FILE_CHECK_WRONG_TYPE; | |
145 | break; | |
146 | } | |
147 | ||
148 | if (result) | |
149 | goto finishup; | |
150 | ||
151 | /* | |
152 | * Are we doing root checks? | |
153 | */ | |
154 | ||
155 | if (!dorootchecks) | |
156 | { | |
157 | /* | |
158 | * Nope, so anything (else) goes... | |
159 | */ | |
160 | ||
161 | goto finishup; | |
162 | } | |
163 | ||
164 | /* | |
165 | * Verify permission of the file itself: | |
166 | * | |
167 | * 1. Must be owned by root | |
168 | * 2. Must not be writable by group unless group is root/wheel/admin | |
169 | * 3. Must not be setuid | |
170 | * 4. Must not be writable by others | |
171 | */ | |
172 | ||
173 | if (fileinfo.st_uid || /* 1. Must be owned by root */ | |
174 | #ifdef __APPLE__ | |
175 | ((fileinfo.st_mode & S_IWGRP) && fileinfo.st_gid && | |
176 | fileinfo.st_gid != 80) || /* 2. Must not be writable by group */ | |
177 | #else | |
178 | ((fileinfo.st_mode & S_IWGRP) && fileinfo.st_gid) || | |
179 | /* 2. Must not be writable by group */ | |
180 | #endif /* __APPLE__ */ | |
181 | (fileinfo.st_mode & S_ISUID) || /* 3. Must not be setuid */ | |
182 | (fileinfo.st_mode & S_IWOTH)) /* 4. Must not be writable by others */ | |
183 | { | |
184 | result = _CUPS_FILE_CHECK_PERMISSIONS; | |
185 | goto finishup; | |
186 | } | |
187 | ||
188 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY || | |
189 | filetype == _CUPS_FILE_CHECK_FILE_ONLY) | |
190 | goto finishup; | |
191 | ||
192 | /* | |
193 | * Now check the containing directory... | |
194 | */ | |
195 | ||
196 | strlcpy(temp, filename, sizeof(temp)); | |
197 | if ((ptr = strrchr(temp, '/')) != NULL) | |
198 | { | |
199 | if (ptr == temp) | |
200 | ptr[1] = '\0'; | |
201 | else | |
202 | *ptr = '\0'; | |
203 | } | |
204 | ||
205 | if (stat(temp, &fileinfo)) | |
206 | { | |
207 | /* | |
208 | * Doesn't exist?!? | |
209 | */ | |
210 | ||
211 | result = _CUPS_FILE_CHECK_MISSING; | |
212 | filetype = _CUPS_FILE_CHECK_DIRECTORY; | |
213 | filename = temp; | |
214 | ||
215 | goto finishup; | |
216 | } | |
217 | ||
218 | if (fileinfo.st_uid || /* 1. Must be owned by root */ | |
219 | #ifdef __APPLE__ | |
220 | ((fileinfo.st_mode & S_IWGRP) && fileinfo.st_gid && | |
221 | fileinfo.st_gid != 80) || /* 2. Must not be writable by group */ | |
222 | #else | |
223 | ((fileinfo.st_mode & S_IWGRP) && fileinfo.st_gid) || | |
224 | /* 2. Must not be writable by group */ | |
225 | #endif /* __APPLE__ */ | |
226 | (fileinfo.st_mode & S_ISUID) || /* 3. Must not be setuid */ | |
227 | (fileinfo.st_mode & S_IWOTH)) /* 4. Must not be writable by others */ | |
228 | { | |
229 | result = _CUPS_FILE_CHECK_PERMISSIONS; | |
230 | filetype = _CUPS_FILE_CHECK_DIRECTORY; | |
231 | filename = temp; | |
232 | } | |
233 | ||
234 | /* | |
235 | * Common return point... | |
236 | */ | |
237 | ||
238 | finishup: | |
239 | ||
240 | if (cb) | |
241 | { | |
242 | cups_lang_t *lang = cupsLangDefault(); | |
243 | /* Localization information */ | |
244 | ||
245 | switch (result) | |
246 | { | |
247 | case _CUPS_FILE_CHECK_OK : | |
248 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
249 | snprintf(message, sizeof(message), | |
250 | _cupsLangString(lang, _("Directory \"%s\" permissions OK " | |
251 | "(0%o/uid=%d/gid=%d).")), | |
252 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
253 | (int)fileinfo.st_gid); | |
254 | else | |
255 | snprintf(message, sizeof(message), | |
256 | _cupsLangString(lang, _("File \"%s\" permissions OK " | |
257 | "(0%o/uid=%d/gid=%d).")), | |
258 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
259 | (int)fileinfo.st_gid); | |
260 | break; | |
261 | ||
262 | case _CUPS_FILE_CHECK_MISSING : | |
263 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
264 | snprintf(message, sizeof(message), | |
265 | _cupsLangString(lang, _("Directory \"%s\" not available: " | |
266 | "%s")), | |
267 | filename, strerror(errno)); | |
268 | else | |
269 | snprintf(message, sizeof(message), | |
270 | _cupsLangString(lang, _("File \"%s\" not available: %s")), | |
271 | filename, strerror(errno)); | |
272 | break; | |
273 | ||
274 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
275 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
276 | snprintf(message, sizeof(message), | |
277 | _cupsLangString(lang, _("Directory \"%s\" has insecure " | |
278 | "permissions " | |
279 | "(0%o/uid=%d/gid=%d).")), | |
280 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
281 | (int)fileinfo.st_gid); | |
282 | else | |
283 | snprintf(message, sizeof(message), | |
284 | _cupsLangString(lang, _("File \"%s\" has insecure " | |
285 | "permissions " | |
286 | "(0%o/uid=%d/gid=%d).")), | |
287 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
288 | (int)fileinfo.st_gid); | |
289 | break; | |
290 | ||
291 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
292 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
293 | snprintf(message, sizeof(message), | |
294 | _cupsLangString(lang, _("Directory \"%s\" is a file.")), | |
295 | filename); | |
296 | else | |
297 | snprintf(message, sizeof(message), | |
298 | _cupsLangString(lang, _("File \"%s\" is a directory.")), | |
299 | filename); | |
300 | break; | |
88f9aafc MS |
301 | |
302 | case _CUPS_FILE_CHECK_RELATIVE_PATH : | |
303 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
304 | snprintf(message, sizeof(message), | |
305 | _cupsLangString(lang, _("Directory \"%s\" contains a " | |
306 | "relative path.")), filename); | |
307 | else | |
308 | snprintf(message, sizeof(message), | |
309 | _cupsLangString(lang, _("File \"%s\" contains a relative " | |
310 | "path.")), filename); | |
311 | break; | |
22c9029b MS |
312 | } |
313 | ||
314 | (*cb)(context, result, message); | |
315 | } | |
316 | ||
317 | return (result); | |
318 | } | |
319 | ||
320 | ||
321 | /* | |
322 | * '_cupsFileCheckFilter()' - Report file check results as CUPS filter messages. | |
323 | */ | |
324 | ||
325 | void | |
326 | _cupsFileCheckFilter( | |
327 | void *context, /* I - Context pointer (unused) */ | |
328 | _cups_fc_result_t result, /* I - Result code */ | |
329 | const char *message) /* I - Message text */ | |
330 | { | |
331 | const char *prefix; /* Messaging prefix */ | |
332 | ||
333 | ||
321d8d57 MS |
334 | (void)context; |
335 | ||
22c9029b MS |
336 | switch (result) |
337 | { | |
f228370c | 338 | default : |
22c9029b MS |
339 | case _CUPS_FILE_CHECK_OK : |
340 | prefix = "DEBUG2"; | |
341 | break; | |
342 | ||
343 | case _CUPS_FILE_CHECK_MISSING : | |
344 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
345 | prefix = "ERROR"; | |
346 | fputs("STATE: +cups-missing-filter-warning\n", stderr); | |
347 | break; | |
348 | ||
349 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
88f9aafc | 350 | case _CUPS_FILE_CHECK_RELATIVE_PATH : |
22c9029b MS |
351 | prefix = "ERROR"; |
352 | fputs("STATE: +cups-insecure-filter-warning\n", stderr); | |
353 | break; | |
354 | } | |
355 | ||
356 | fprintf(stderr, "%s: %s\n", prefix, message); | |
357 | } | |
358 | ||
359 | ||
ef416fc2 | 360 | /* |
361 | * 'cupsFileClose()' - Close a CUPS file. | |
5a738aea | 362 | * |
426c6a59 | 363 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 364 | */ |
365 | ||
366 | int /* O - 0 on success, -1 on error */ | |
367 | cupsFileClose(cups_file_t *fp) /* I - CUPS file */ | |
368 | { | |
369 | int fd; /* File descriptor */ | |
370 | char mode; /* Open mode */ | |
371 | int status; /* Return status */ | |
80ca4592 | 372 | int is_stdio; /* Is a stdio file? */ |
ef416fc2 | 373 | |
374 | ||
e07d4801 | 375 | DEBUG_printf(("cupsFileClose(fp=%p)", fp)); |
ef416fc2 | 376 | |
377 | /* | |
378 | * Range check... | |
379 | */ | |
380 | ||
381 | if (!fp) | |
382 | return (-1); | |
383 | ||
384 | /* | |
385 | * Flush pending write data... | |
386 | */ | |
387 | ||
388 | if (fp->mode == 'w') | |
389 | status = cupsFileFlush(fp); | |
390 | else | |
391 | status = 0; | |
392 | ||
393 | #ifdef HAVE_LIBZ | |
394 | if (fp->compressed && status >= 0) | |
395 | { | |
396 | if (fp->mode == 'r') | |
397 | { | |
398 | /* | |
399 | * Free decompression data... | |
400 | */ | |
401 | ||
402 | inflateEnd(&fp->stream); | |
403 | } | |
404 | else | |
405 | { | |
406 | /* | |
407 | * Flush any remaining compressed data... | |
408 | */ | |
409 | ||
410 | unsigned char trailer[8]; /* Trailer CRC and length */ | |
411 | int done; /* Done writing... */ | |
412 | ||
413 | ||
414 | fp->stream.avail_in = 0; | |
415 | ||
416 | for (done = 0;;) | |
417 | { | |
418 | if (fp->stream.next_out > fp->cbuf) | |
419 | { | |
420 | if (cups_write(fp, (char *)fp->cbuf, | |
421 | fp->stream.next_out - fp->cbuf) < 0) | |
422 | status = -1; | |
423 | ||
424 | fp->stream.next_out = fp->cbuf; | |
425 | fp->stream.avail_out = sizeof(fp->cbuf); | |
426 | } | |
427 | ||
428 | if (done || status < 0) | |
429 | break; | |
430 | ||
431 | done = deflate(&fp->stream, Z_FINISH) == Z_STREAM_END && | |
432 | fp->stream.next_out == fp->cbuf; | |
433 | } | |
434 | ||
435 | /* | |
436 | * Write the CRC and length... | |
437 | */ | |
438 | ||
439 | trailer[0] = fp->crc; | |
440 | trailer[1] = fp->crc >> 8; | |
441 | trailer[2] = fp->crc >> 16; | |
442 | trailer[3] = fp->crc >> 24; | |
443 | trailer[4] = fp->pos; | |
444 | trailer[5] = fp->pos >> 8; | |
445 | trailer[6] = fp->pos >> 16; | |
446 | trailer[7] = fp->pos >> 24; | |
447 | ||
448 | if (cups_write(fp, (char *)trailer, 8) < 0) | |
449 | status = -1; | |
450 | ||
451 | /* | |
452 | * Free all memory used by the compression stream... | |
453 | */ | |
454 | ||
455 | deflateEnd(&(fp->stream)); | |
456 | } | |
457 | } | |
458 | #endif /* HAVE_LIBZ */ | |
459 | ||
460 | /* | |
461 | * Save the file descriptor we used and free memory... | |
462 | */ | |
463 | ||
80ca4592 | 464 | fd = fp->fd; |
465 | mode = fp->mode; | |
466 | is_stdio = fp->is_stdio; | |
ef416fc2 | 467 | |
75bd9771 MS |
468 | if (fp->printf_buffer) |
469 | free(fp->printf_buffer); | |
470 | ||
ef416fc2 | 471 | free(fp); |
472 | ||
473 | /* | |
474 | * Close the file, returning the close status... | |
475 | */ | |
476 | ||
477 | if (mode == 's') | |
478 | { | |
479 | if (closesocket(fd) < 0) | |
480 | status = -1; | |
481 | } | |
80ca4592 | 482 | else if (!is_stdio) |
ef416fc2 | 483 | { |
484 | if (close(fd) < 0) | |
485 | status = -1; | |
486 | } | |
487 | ||
488 | return (status); | |
489 | } | |
490 | ||
491 | ||
492 | /* | |
493 | * 'cupsFileCompression()' - Return whether a file is compressed. | |
5a738aea | 494 | * |
426c6a59 | 495 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 496 | */ |
497 | ||
5a738aea | 498 | int /* O - @code CUPS_FILE_NONE@ or @code CUPS_FILE_GZIP@ */ |
ef416fc2 | 499 | cupsFileCompression(cups_file_t *fp) /* I - CUPS file */ |
500 | { | |
80ca4592 | 501 | return (fp ? fp->compressed : CUPS_FILE_NONE); |
ef416fc2 | 502 | } |
503 | ||
504 | ||
505 | /* | |
506 | * 'cupsFileEOF()' - Return the end-of-file status. | |
5a738aea | 507 | * |
426c6a59 | 508 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 509 | */ |
510 | ||
5a738aea | 511 | int /* O - 1 on end of file, 0 otherwise */ |
ef416fc2 | 512 | cupsFileEOF(cups_file_t *fp) /* I - CUPS file */ |
513 | { | |
80ca4592 | 514 | return (fp ? fp->eof : 1); |
ef416fc2 | 515 | } |
516 | ||
517 | ||
fa73b229 | 518 | /* |
519 | * 'cupsFileFind()' - Find a file using the specified path. | |
520 | * | |
521 | * This function allows the paths in the path string to be separated by | |
522 | * colons (UNIX standard) or semicolons (Windows standard) and stores the | |
523 | * result in the buffer supplied. If the file cannot be found in any of | |
5a738aea MS |
524 | * the supplied paths, @code NULL@ is returned. A @code NULL@ path only |
525 | * matches the current directory. | |
526 | * | |
426c6a59 | 527 | * @since CUPS 1.2/Mac OS X 10.5@ |
fa73b229 | 528 | */ |
529 | ||
5a738aea | 530 | const char * /* O - Full path to file or @code NULL@ if not found */ |
fa73b229 | 531 | cupsFileFind(const char *filename, /* I - File to find */ |
532 | const char *path, /* I - Colon/semicolon-separated path */ | |
4400e98d | 533 | int executable, /* I - 1 = executable files, 0 = any file/dir */ |
534 | char *buffer, /* I - Filename buffer */ | |
fa73b229 | 535 | int bufsize) /* I - Size of filename buffer */ |
536 | { | |
537 | char *bufptr, /* Current position in buffer */ | |
538 | *bufend; /* End of buffer */ | |
539 | ||
540 | ||
541 | /* | |
542 | * Range check input... | |
543 | */ | |
544 | ||
e07d4801 MS |
545 | DEBUG_printf(("cupsFileFind(filename=\"%s\", path=\"%s\", executable=%d, " |
546 | "buffer=%p, bufsize=%d)", filename, path, executable, buffer, | |
547 | bufsize)); | |
548 | ||
fa73b229 | 549 | if (!filename || !buffer || bufsize < 2) |
550 | return (NULL); | |
551 | ||
552 | if (!path) | |
553 | { | |
554 | /* | |
555 | * No path, so check current directory... | |
556 | */ | |
557 | ||
558 | if (!access(filename, 0)) | |
559 | { | |
560 | strlcpy(buffer, filename, bufsize); | |
561 | return (buffer); | |
562 | } | |
563 | else | |
564 | return (NULL); | |
565 | } | |
566 | ||
567 | /* | |
568 | * Now check each path and return the first match... | |
569 | */ | |
570 | ||
571 | bufend = buffer + bufsize - 1; | |
572 | bufptr = buffer; | |
573 | ||
574 | while (*path) | |
575 | { | |
b86bc4cf | 576 | #ifdef WIN32 |
577 | if (*path == ';' || (*path == ':' && ((bufptr - buffer) > 1 || !isalpha(buffer[0] & 255)))) | |
578 | #else | |
fa73b229 | 579 | if (*path == ';' || *path == ':') |
b86bc4cf | 580 | #endif /* WIN32 */ |
fa73b229 | 581 | { |
582 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
583 | *bufptr++ = '/'; | |
584 | ||
585 | strlcpy(bufptr, filename, bufend - bufptr); | |
586 | ||
4400e98d | 587 | #ifdef WIN32 |
fa73b229 | 588 | if (!access(buffer, 0)) |
4400e98d | 589 | #else |
590 | if (!access(buffer, executable ? X_OK : 0)) | |
591 | #endif /* WIN32 */ | |
b86bc4cf | 592 | { |
e07d4801 | 593 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 594 | return (buffer); |
b86bc4cf | 595 | } |
fa73b229 | 596 | |
597 | bufptr = buffer; | |
598 | } | |
599 | else if (bufptr < bufend) | |
600 | *bufptr++ = *path; | |
601 | ||
602 | path ++; | |
603 | } | |
604 | ||
605 | /* | |
606 | * Check the last path... | |
607 | */ | |
608 | ||
609 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
610 | *bufptr++ = '/'; | |
611 | ||
612 | strlcpy(bufptr, filename, bufend - bufptr); | |
613 | ||
614 | if (!access(buffer, 0)) | |
b86bc4cf | 615 | { |
e07d4801 | 616 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 617 | return (buffer); |
b86bc4cf | 618 | } |
fa73b229 | 619 | else |
b86bc4cf | 620 | { |
e07d4801 | 621 | DEBUG_puts("1cupsFileFind: Returning NULL"); |
fa73b229 | 622 | return (NULL); |
b86bc4cf | 623 | } |
fa73b229 | 624 | } |
625 | ||
626 | ||
ef416fc2 | 627 | /* |
628 | * 'cupsFileFlush()' - Flush pending output. | |
5a738aea | 629 | * |
426c6a59 | 630 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 631 | */ |
632 | ||
633 | int /* O - 0 on success, -1 on error */ | |
634 | cupsFileFlush(cups_file_t *fp) /* I - CUPS file */ | |
635 | { | |
2abf387c | 636 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 637 | |
638 | ||
e07d4801 | 639 | DEBUG_printf(("cupsFileFlush(fp=%p)", fp)); |
ef416fc2 | 640 | |
641 | /* | |
642 | * Range check input... | |
643 | */ | |
644 | ||
645 | if (!fp || fp->mode != 'w') | |
646 | { | |
e07d4801 | 647 | DEBUG_puts("1cupsFileFlush: Attempt to flush a read-only file..."); |
ef416fc2 | 648 | return (-1); |
649 | } | |
650 | ||
b86bc4cf | 651 | bytes = (ssize_t)(fp->ptr - fp->buf); |
ef416fc2 | 652 | |
e07d4801 | 653 | DEBUG_printf(("2cupsFileFlush: Flushing " CUPS_LLFMT " bytes...", |
634763e8 | 654 | CUPS_LLCAST bytes)); |
ecdc0628 | 655 | |
ef416fc2 | 656 | if (bytes > 0) |
657 | { | |
658 | #ifdef HAVE_LIBZ | |
659 | if (fp->compressed) | |
660 | bytes = cups_compress(fp, fp->buf, bytes); | |
661 | else | |
662 | #endif /* HAVE_LIBZ */ | |
663 | bytes = cups_write(fp, fp->buf, bytes); | |
664 | ||
665 | if (bytes < 0) | |
666 | return (-1); | |
667 | ||
668 | fp->ptr = fp->buf; | |
669 | } | |
f14324a7 | 670 | |
ef416fc2 | 671 | return (0); |
672 | } | |
673 | ||
674 | ||
675 | /* | |
676 | * 'cupsFileGetChar()' - Get a single character from a file. | |
5a738aea | 677 | * |
426c6a59 | 678 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 679 | */ |
680 | ||
5a738aea | 681 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 682 | cupsFileGetChar(cups_file_t *fp) /* I - CUPS file */ |
683 | { | |
684 | /* | |
685 | * Range check input... | |
686 | */ | |
687 | ||
688 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
b86bc4cf | 689 | { |
f14324a7 | 690 | DEBUG_puts("5cupsFileGetChar: Bad arguments!"); |
ef416fc2 | 691 | return (-1); |
b86bc4cf | 692 | } |
ef416fc2 | 693 | |
694 | /* | |
695 | * If the input buffer is empty, try to read more data... | |
696 | */ | |
697 | ||
698 | if (fp->ptr >= fp->end) | |
699 | if (cups_fill(fp) < 0) | |
b86bc4cf | 700 | { |
f14324a7 | 701 | DEBUG_puts("5cupsFileGetChar: Unable to fill buffer!"); |
ef416fc2 | 702 | return (-1); |
b86bc4cf | 703 | } |
ef416fc2 | 704 | |
705 | /* | |
706 | * Return the next character in the buffer... | |
707 | */ | |
708 | ||
f14324a7 | 709 | DEBUG_printf(("5cupsFileGetChar: Returning %d...", *(fp->ptr) & 255)); |
b86bc4cf | 710 | |
634763e8 MS |
711 | fp->pos ++; |
712 | ||
f14324a7 | 713 | DEBUG_printf(("6cupsFileGetChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 714 | |
ef416fc2 | 715 | return (*(fp->ptr)++ & 255); |
716 | } | |
717 | ||
718 | ||
719 | /* | |
22c9029b | 720 | * 'cupsFileGetConf()' - Get a line from a configuration file. |
5a738aea | 721 | * |
426c6a59 | 722 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 723 | */ |
724 | ||
5a738aea | 725 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 726 | cupsFileGetConf(cups_file_t *fp, /* I - CUPS file */ |
727 | char *buf, /* O - String buffer */ | |
728 | size_t buflen, /* I - Size of string buffer */ | |
729 | char **value, /* O - Pointer to value */ | |
730 | int *linenum) /* IO - Current line number */ | |
731 | { | |
732 | char *ptr; /* Pointer into line */ | |
733 | ||
734 | ||
735 | /* | |
736 | * Range check input... | |
737 | */ | |
738 | ||
e07d4801 MS |
739 | DEBUG_printf(("2cupsFileGetConf(fp=%p, buf=%p, buflen=" CUPS_LLFMT |
740 | ", value=%p, linenum=%p)", fp, buf, CUPS_LLCAST buflen, | |
634763e8 MS |
741 | value, linenum)); |
742 | ||
ef416fc2 | 743 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || |
744 | !buf || buflen < 2 || !value) | |
745 | { | |
746 | if (value) | |
747 | *value = NULL; | |
748 | ||
749 | return (NULL); | |
750 | } | |
751 | ||
752 | /* | |
753 | * Read the next non-comment line... | |
754 | */ | |
755 | ||
756 | *value = NULL; | |
f7deaa1a | 757 | |
ef416fc2 | 758 | while (cupsFileGets(fp, buf, buflen)) |
759 | { | |
760 | (*linenum) ++; | |
761 | ||
762 | /* | |
763 | * Strip any comments... | |
764 | */ | |
765 | ||
766 | if ((ptr = strchr(buf, '#')) != NULL) | |
767 | { | |
f7deaa1a | 768 | if (ptr > buf && ptr[-1] == '\\') |
ef416fc2 | 769 | { |
f7deaa1a | 770 | // Unquote the #... |
771 | _cups_strcpy(ptr - 1, ptr); | |
ef416fc2 | 772 | } |
f7deaa1a | 773 | else |
774 | { | |
775 | // Strip the comment and any trailing whitespace... | |
776 | while (ptr > buf) | |
777 | { | |
7cf5915e | 778 | if (!_cups_isspace(ptr[-1])) |
f7deaa1a | 779 | break; |
780 | ||
781 | ptr --; | |
782 | } | |
ef416fc2 | 783 | |
f7deaa1a | 784 | *ptr = '\0'; |
785 | } | |
ef416fc2 | 786 | } |
787 | ||
788 | /* | |
789 | * Strip leading whitespace... | |
790 | */ | |
791 | ||
7cf5915e | 792 | for (ptr = buf; _cups_isspace(*ptr); ptr ++); |
ef416fc2 | 793 | |
794 | if (ptr > buf) | |
795 | _cups_strcpy(buf, ptr); | |
796 | ||
797 | /* | |
798 | * See if there is anything left... | |
799 | */ | |
800 | ||
801 | if (buf[0]) | |
802 | { | |
803 | /* | |
804 | * Yes, grab any value and return... | |
805 | */ | |
806 | ||
807 | for (ptr = buf; *ptr; ptr ++) | |
7cf5915e | 808 | if (_cups_isspace(*ptr)) |
ef416fc2 | 809 | break; |
810 | ||
811 | if (*ptr) | |
812 | { | |
813 | /* | |
814 | * Have a value, skip any other spaces... | |
815 | */ | |
816 | ||
7cf5915e | 817 | while (_cups_isspace(*ptr)) |
ef416fc2 | 818 | *ptr++ = '\0'; |
819 | ||
820 | if (*ptr) | |
821 | *value = ptr; | |
822 | ||
823 | /* | |
824 | * Strip trailing whitespace and > for lines that begin with <... | |
825 | */ | |
826 | ||
827 | ptr += strlen(ptr) - 1; | |
828 | ||
829 | if (buf[0] == '<' && *ptr == '>') | |
830 | *ptr-- = '\0'; | |
831 | else if (buf[0] == '<' && *ptr != '>') | |
832 | { | |
833 | /* | |
834 | * Syntax error... | |
835 | */ | |
836 | ||
837 | *value = NULL; | |
838 | return (buf); | |
839 | } | |
840 | ||
7cf5915e | 841 | while (ptr > *value && _cups_isspace(*ptr)) |
ef416fc2 | 842 | *ptr-- = '\0'; |
843 | } | |
844 | ||
845 | /* | |
846 | * Return the line... | |
847 | */ | |
848 | ||
849 | return (buf); | |
850 | } | |
851 | } | |
852 | ||
853 | return (NULL); | |
854 | } | |
855 | ||
856 | ||
80ca4592 | 857 | /* |
858 | * 'cupsFileGetLine()' - Get a CR and/or LF-terminated line that may | |
859 | * contain binary data. | |
860 | * | |
5a738aea MS |
861 | * This function differs from @link cupsFileGets@ in that the trailing CR |
862 | * and LF are preserved, as is any binary data on the line. The buffer is | |
863 | * nul-terminated, however you should use the returned length to determine | |
80ca4592 | 864 | * the number of bytes on the line. |
5a738aea | 865 | * |
426c6a59 | 866 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 867 | */ |
868 | ||
5a738aea | 869 | size_t /* O - Number of bytes on line or 0 on end of file */ |
80ca4592 | 870 | cupsFileGetLine(cups_file_t *fp, /* I - File to read from */ |
871 | char *buf, /* I - Buffer */ | |
872 | size_t buflen) /* I - Size of buffer */ | |
873 | { | |
874 | int ch; /* Character from file */ | |
875 | char *ptr, /* Current position in line buffer */ | |
876 | *end; /* End of line buffer */ | |
877 | ||
878 | ||
879 | /* | |
880 | * Range check input... | |
881 | */ | |
882 | ||
e07d4801 | 883 | DEBUG_printf(("2cupsFileGetLine(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", |
634763e8 MS |
884 | fp, buf, CUPS_LLCAST buflen)); |
885 | ||
80ca4592 | 886 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 3) |
887 | return (0); | |
888 | ||
889 | /* | |
890 | * Now loop until we have a valid line... | |
891 | */ | |
892 | ||
893 | for (ptr = buf, end = buf + buflen - 2; ptr < end ;) | |
894 | { | |
895 | if (fp->ptr >= fp->end) | |
896 | if (cups_fill(fp) <= 0) | |
897 | break; | |
898 | ||
899 | *ptr++ = ch = *(fp->ptr)++; | |
634763e8 | 900 | fp->pos ++; |
80ca4592 | 901 | |
902 | if (ch == '\r') | |
903 | { | |
904 | /* | |
905 | * Check for CR LF... | |
906 | */ | |
907 | ||
908 | if (fp->ptr >= fp->end) | |
909 | if (cups_fill(fp) <= 0) | |
910 | break; | |
911 | ||
912 | if (*(fp->ptr) == '\n') | |
634763e8 | 913 | { |
80ca4592 | 914 | *ptr++ = *(fp->ptr)++; |
634763e8 MS |
915 | fp->pos ++; |
916 | } | |
80ca4592 | 917 | |
918 | break; | |
919 | } | |
920 | else if (ch == '\n') | |
921 | { | |
922 | /* | |
923 | * Line feed ends a line... | |
924 | */ | |
925 | ||
926 | break; | |
927 | } | |
928 | } | |
929 | ||
930 | *ptr = '\0'; | |
931 | ||
e07d4801 | 932 | DEBUG_printf(("4cupsFileGetLine: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 933 | |
80ca4592 | 934 | return (ptr - buf); |
935 | } | |
936 | ||
937 | ||
ef416fc2 | 938 | /* |
939 | * 'cupsFileGets()' - Get a CR and/or LF-terminated line. | |
5a738aea | 940 | * |
426c6a59 | 941 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 942 | */ |
943 | ||
5a738aea | 944 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 945 | cupsFileGets(cups_file_t *fp, /* I - CUPS file */ |
946 | char *buf, /* O - String buffer */ | |
947 | size_t buflen) /* I - Size of string buffer */ | |
948 | { | |
949 | int ch; /* Character from file */ | |
950 | char *ptr, /* Current position in line buffer */ | |
951 | *end; /* End of line buffer */ | |
952 | ||
953 | ||
954 | /* | |
955 | * Range check input... | |
956 | */ | |
957 | ||
e07d4801 | 958 | DEBUG_printf(("2cupsFileGets(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
959 | CUPS_LLCAST buflen)); |
960 | ||
ef416fc2 | 961 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 2) |
962 | return (NULL); | |
963 | ||
964 | /* | |
965 | * Now loop until we have a valid line... | |
966 | */ | |
967 | ||
968 | for (ptr = buf, end = buf + buflen - 1; ptr < end ;) | |
969 | { | |
970 | if (fp->ptr >= fp->end) | |
971 | if (cups_fill(fp) <= 0) | |
972 | { | |
973 | if (ptr == buf) | |
974 | return (NULL); | |
975 | else | |
976 | break; | |
977 | } | |
978 | ||
979 | ch = *(fp->ptr)++; | |
634763e8 | 980 | fp->pos ++; |
ef416fc2 | 981 | |
982 | if (ch == '\r') | |
983 | { | |
984 | /* | |
985 | * Check for CR LF... | |
986 | */ | |
987 | ||
988 | if (fp->ptr >= fp->end) | |
989 | if (cups_fill(fp) <= 0) | |
990 | break; | |
991 | ||
992 | if (*(fp->ptr) == '\n') | |
634763e8 MS |
993 | { |
994 | fp->ptr ++; | |
995 | fp->pos ++; | |
996 | } | |
ef416fc2 | 997 | |
998 | break; | |
999 | } | |
1000 | else if (ch == '\n') | |
1001 | { | |
1002 | /* | |
1003 | * Line feed ends a line... | |
1004 | */ | |
1005 | ||
1006 | break; | |
1007 | } | |
1008 | else | |
1009 | *ptr++ = ch; | |
1010 | } | |
1011 | ||
1012 | *ptr = '\0'; | |
1013 | ||
e07d4801 | 1014 | DEBUG_printf(("4cupsFileGets: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1015 | |
ef416fc2 | 1016 | return (buf); |
1017 | } | |
1018 | ||
1019 | ||
1020 | /* | |
1021 | * 'cupsFileLock()' - Temporarily lock access to a file. | |
5a738aea | 1022 | * |
426c6a59 | 1023 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1024 | */ |
1025 | ||
1026 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 1027 | cupsFileLock(cups_file_t *fp, /* I - CUPS file */ |
ef416fc2 | 1028 | int block) /* I - 1 to wait for the lock, 0 to fail right away */ |
1029 | { | |
1030 | /* | |
1031 | * Range check... | |
1032 | */ | |
1033 | ||
1034 | if (!fp || fp->mode == 's') | |
1035 | return (-1); | |
1036 | ||
1037 | /* | |
1038 | * Try the lock... | |
1039 | */ | |
1040 | ||
1041 | #ifdef WIN32 | |
536bc2c6 | 1042 | return (_locking(fp->fd, block ? _LK_LOCK : _LK_NBLCK, 0)); |
ef416fc2 | 1043 | #else |
1044 | return (lockf(fp->fd, block ? F_LOCK : F_TLOCK, 0)); | |
1045 | #endif /* WIN32 */ | |
1046 | } | |
1047 | ||
1048 | ||
1049 | /* | |
1050 | * 'cupsFileNumber()' - Return the file descriptor associated with a CUPS file. | |
5a738aea | 1051 | * |
426c6a59 | 1052 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1053 | */ |
1054 | ||
1055 | int /* O - File descriptor */ | |
1056 | cupsFileNumber(cups_file_t *fp) /* I - CUPS file */ | |
1057 | { | |
5a738aea MS |
1058 | if (fp) |
1059 | return (fp->fd); | |
1060 | else | |
1061 | return (-1); | |
ef416fc2 | 1062 | } |
1063 | ||
1064 | ||
1065 | /* | |
1066 | * 'cupsFileOpen()' - Open a CUPS file. | |
5a738aea MS |
1067 | * |
1068 | * The "mode" parameter can be "r" to read, "w" to write, overwriting any | |
1069 | * existing file, "a" to append to an existing file or create a new file, | |
1070 | * or "s" to open a socket connection. | |
1071 | * | |
634763e8 MS |
1072 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1073 | * supplied which enables Flate compression of the file. Compression is | |
1074 | * not supported for the "a" (append) mode. | |
5a738aea MS |
1075 | * |
1076 | * When opening a socket connection, the filename is a string of the form | |
1077 | * "address:port" or "hostname:port". The socket will make an IPv4 or IPv6 | |
1078 | * connection as needed, generally preferring IPv6 connections when there is | |
1079 | * a choice. | |
1080 | * | |
426c6a59 | 1081 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1082 | */ |
1083 | ||
5a738aea | 1084 | cups_file_t * /* O - CUPS file or @code NULL@ if the file or socket cannot be opened */ |
ef416fc2 | 1085 | cupsFileOpen(const char *filename, /* I - Name of file */ |
1086 | const char *mode) /* I - Open mode */ | |
1087 | { | |
1088 | cups_file_t *fp; /* New CUPS file */ | |
1089 | int fd; /* File descriptor */ | |
1090 | char hostname[1024], /* Hostname */ | |
1091 | *portname; /* Port "name" (number or service) */ | |
1092 | http_addrlist_t *addrlist; /* Host address list */ | |
1093 | ||
1094 | ||
e07d4801 | 1095 | DEBUG_printf(("cupsFileOpen(filename=\"%s\", mode=\"%s\")", filename, |
b423cd4c | 1096 | mode)); |
1097 | ||
ef416fc2 | 1098 | /* |
1099 | * Range check input... | |
1100 | */ | |
1101 | ||
1102 | if (!filename || !mode || | |
634763e8 MS |
1103 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1104 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1105 | return (NULL); |
1106 | ||
1107 | /* | |
1108 | * Open the file... | |
1109 | */ | |
1110 | ||
1111 | switch (*mode) | |
1112 | { | |
1113 | case 'a' : /* Append file */ | |
c7017ecc MS |
1114 | fd = cups_open(filename, |
1115 | O_RDWR | O_CREAT | O_APPEND | O_LARGEFILE | O_BINARY); | |
ef416fc2 | 1116 | break; |
1117 | ||
1118 | case 'r' : /* Read file */ | |
b86bc4cf | 1119 | fd = open(filename, O_RDONLY | O_LARGEFILE | O_BINARY, 0); |
ef416fc2 | 1120 | break; |
1121 | ||
1122 | case 'w' : /* Write file */ | |
c7017ecc MS |
1123 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); |
1124 | if (fd < 0 && errno == ENOENT) | |
1125 | { | |
1126 | fd = cups_open(filename, | |
1127 | O_WRONLY | O_CREAT | O_EXCL | O_LARGEFILE | O_BINARY); | |
1128 | if (fd < 0 && errno == EEXIST) | |
1129 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); | |
1130 | } | |
1131 | ||
1132 | if (fd >= 0) | |
1133 | #ifdef WIN32 | |
1134 | _chsize(fd, 0); | |
1135 | #else | |
1136 | ftruncate(fd, 0); | |
1137 | #endif /* WIN32 */ | |
ef416fc2 | 1138 | break; |
1139 | ||
1140 | case 's' : /* Read/write socket */ | |
1141 | strlcpy(hostname, filename, sizeof(hostname)); | |
1142 | if ((portname = strrchr(hostname, ':')) != NULL) | |
1143 | *portname++ = '\0'; | |
1144 | else | |
1145 | return (NULL); | |
1146 | ||
1147 | /* | |
1148 | * Lookup the hostname and service... | |
1149 | */ | |
1150 | ||
1151 | if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL) | |
1152 | return (NULL); | |
1153 | ||
1154 | /* | |
1155 | * Connect to the server... | |
1156 | */ | |
1157 | ||
1158 | if (!httpAddrConnect(addrlist, &fd)) | |
1159 | { | |
1160 | httpAddrFreeList(addrlist); | |
1161 | return (NULL); | |
1162 | } | |
1163 | ||
1164 | httpAddrFreeList(addrlist); | |
1165 | break; | |
1166 | ||
1167 | default : /* Remove bogus compiler warning... */ | |
1168 | return (NULL); | |
1169 | } | |
1170 | ||
1171 | if (fd < 0) | |
1172 | return (NULL); | |
1173 | ||
1174 | /* | |
1175 | * Create the CUPS file structure... | |
1176 | */ | |
1177 | ||
1178 | if ((fp = cupsFileOpenFd(fd, mode)) == NULL) | |
1179 | { | |
1180 | if (*mode == 's') | |
1181 | closesocket(fd); | |
1182 | else | |
1183 | close(fd); | |
1184 | } | |
1185 | ||
1186 | /* | |
1187 | * Return it... | |
1188 | */ | |
1189 | ||
1190 | return (fp); | |
1191 | } | |
1192 | ||
1193 | /* | |
1194 | * 'cupsFileOpenFd()' - Open a CUPS file using a file descriptor. | |
5a738aea | 1195 | * |
634763e8 MS |
1196 | * The "mode" parameter can be "r" to read, "w" to write, "a" to append, |
1197 | * or "s" to treat the file descriptor as a bidirectional socket connection. | |
5a738aea | 1198 | * |
634763e8 MS |
1199 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1200 | * supplied which enables Flate compression of the file. Compression is | |
1201 | * not supported for the "a" (append) mode. | |
5a738aea | 1202 | * |
426c6a59 | 1203 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1204 | */ |
1205 | ||
5a738aea | 1206 | cups_file_t * /* O - CUPS file or @code NULL@ if the file could not be opened */ |
ef416fc2 | 1207 | cupsFileOpenFd(int fd, /* I - File descriptor */ |
1208 | const char *mode) /* I - Open mode */ | |
1209 | { | |
1210 | cups_file_t *fp; /* New CUPS file */ | |
1211 | ||
1212 | ||
e07d4801 | 1213 | DEBUG_printf(("cupsFileOpenFd(fd=%d, mode=\"%s\")", fd, mode)); |
b423cd4c | 1214 | |
ef416fc2 | 1215 | /* |
1216 | * Range check input... | |
1217 | */ | |
1218 | ||
1219 | if (fd < 0 || !mode || | |
634763e8 MS |
1220 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1221 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1222 | return (NULL); |
1223 | ||
1224 | /* | |
1225 | * Allocate memory... | |
1226 | */ | |
1227 | ||
1228 | if ((fp = calloc(1, sizeof(cups_file_t))) == NULL) | |
1229 | return (NULL); | |
1230 | ||
1231 | /* | |
1232 | * Open the file... | |
1233 | */ | |
1234 | ||
1235 | fp->fd = fd; | |
1236 | ||
1237 | switch (*mode) | |
1238 | { | |
ef416fc2 | 1239 | case 'a' : |
634763e8 MS |
1240 | fp->pos = lseek(fd, 0, SEEK_END); |
1241 | ||
1242 | case 'w' : | |
ef416fc2 | 1243 | fp->mode = 'w'; |
1244 | fp->ptr = fp->buf; | |
1245 | fp->end = fp->buf + sizeof(fp->buf); | |
1246 | ||
1247 | #ifdef HAVE_LIBZ | |
1248 | if (mode[1] >= '1' && mode[1] <= '9') | |
1249 | { | |
1250 | /* | |
1251 | * Open a compressed stream, so write the standard gzip file | |
1252 | * header... | |
1253 | */ | |
1254 | ||
1255 | unsigned char header[10]; /* gzip file header */ | |
1256 | time_t curtime; /* Current time */ | |
1257 | ||
1258 | ||
1259 | curtime = time(NULL); | |
1260 | header[0] = 0x1f; | |
1261 | header[1] = 0x8b; | |
1262 | header[2] = Z_DEFLATED; | |
1263 | header[3] = 0; | |
1264 | header[4] = curtime; | |
1265 | header[5] = curtime >> 8; | |
1266 | header[6] = curtime >> 16; | |
1267 | header[7] = curtime >> 24; | |
1268 | header[8] = 0; | |
1269 | header[9] = 0x03; | |
1270 | ||
1271 | cups_write(fp, (char *)header, 10); | |
1272 | ||
1273 | /* | |
1274 | * Initialize the compressor... | |
1275 | */ | |
1276 | ||
1277 | deflateInit2(&(fp->stream), mode[1] - '0', Z_DEFLATED, -15, 8, | |
1278 | Z_DEFAULT_STRATEGY); | |
1279 | ||
1280 | fp->stream.next_out = fp->cbuf; | |
1281 | fp->stream.avail_out = sizeof(fp->cbuf); | |
1282 | fp->compressed = 1; | |
1283 | fp->crc = crc32(0L, Z_NULL, 0); | |
1284 | } | |
1285 | #endif /* HAVE_LIBZ */ | |
1286 | break; | |
1287 | ||
1288 | case 'r' : | |
1289 | fp->mode = 'r'; | |
1290 | break; | |
1291 | ||
1292 | case 's' : | |
1293 | fp->mode = 's'; | |
1294 | break; | |
1295 | ||
1296 | default : /* Remove bogus compiler warning... */ | |
1297 | return (NULL); | |
1298 | } | |
1299 | ||
1300 | /* | |
1301 | * Don't pass this file to child processes... | |
1302 | */ | |
1303 | ||
1304 | #ifndef WIN32 | |
1305 | fcntl(fp->fd, F_SETFD, fcntl(fp->fd, F_GETFD) | FD_CLOEXEC); | |
1306 | #endif /* !WIN32 */ | |
1307 | ||
1308 | return (fp); | |
1309 | } | |
1310 | ||
1311 | ||
1312 | /* | |
1313 | * 'cupsFilePeekChar()' - Peek at the next character from a file. | |
5a738aea | 1314 | * |
426c6a59 | 1315 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1316 | */ |
1317 | ||
5a738aea | 1318 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 1319 | cupsFilePeekChar(cups_file_t *fp) /* I - CUPS file */ |
1320 | { | |
1321 | /* | |
1322 | * Range check input... | |
1323 | */ | |
1324 | ||
1325 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
1326 | return (-1); | |
1327 | ||
1328 | /* | |
1329 | * If the input buffer is empty, try to read more data... | |
1330 | */ | |
1331 | ||
1332 | if (fp->ptr >= fp->end) | |
1333 | if (cups_fill(fp) < 0) | |
1334 | return (-1); | |
1335 | ||
1336 | /* | |
1337 | * Return the next character in the buffer... | |
1338 | */ | |
1339 | ||
1340 | return (*(fp->ptr) & 255); | |
1341 | } | |
1342 | ||
1343 | ||
1344 | /* | |
1345 | * 'cupsFilePrintf()' - Write a formatted string. | |
5a738aea | 1346 | * |
426c6a59 | 1347 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1348 | */ |
1349 | ||
5a738aea | 1350 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1351 | cupsFilePrintf(cups_file_t *fp, /* I - CUPS file */ |
1352 | const char *format, /* I - Printf-style format string */ | |
1353 | ...) /* I - Additional args as necessary */ | |
1354 | { | |
1355 | va_list ap; /* Argument list */ | |
2abf387c | 1356 | ssize_t bytes; /* Formatted size */ |
ecdc0628 | 1357 | |
ef416fc2 | 1358 | |
e07d4801 | 1359 | DEBUG_printf(("2cupsFilePrintf(fp=%p, format=\"%s\", ...)", fp, format)); |
ef416fc2 | 1360 | |
1361 | if (!fp || !format || (fp->mode != 'w' && fp->mode != 's')) | |
1362 | return (-1); | |
1363 | ||
75bd9771 MS |
1364 | if (!fp->printf_buffer) |
1365 | { | |
1366 | /* | |
1367 | * Start with an 1k printf buffer... | |
1368 | */ | |
1369 | ||
1370 | if ((fp->printf_buffer = malloc(1024)) == NULL) | |
1371 | return (-1); | |
1372 | ||
1373 | fp->printf_size = 1024; | |
1374 | } | |
1375 | ||
ef416fc2 | 1376 | va_start(ap, format); |
75bd9771 | 1377 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); |
ef416fc2 | 1378 | va_end(ap); |
1379 | ||
536bc2c6 | 1380 | if (bytes >= (ssize_t)fp->printf_size) |
75bd9771 MS |
1381 | { |
1382 | /* | |
1383 | * Expand the printf buffer... | |
1384 | */ | |
1385 | ||
1386 | char *temp; /* Temporary buffer pointer */ | |
1387 | ||
1388 | ||
1389 | if (bytes > 65535) | |
1390 | return (-1); | |
1391 | ||
1392 | if ((temp = realloc(fp->printf_buffer, bytes + 1)) == NULL) | |
1393 | return (-1); | |
1394 | ||
1395 | fp->printf_buffer = temp; | |
1396 | fp->printf_size = bytes + 1; | |
1397 | ||
1398 | va_start(ap, format); | |
1399 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); | |
1400 | va_end(ap); | |
1401 | } | |
ecdc0628 | 1402 | |
ef416fc2 | 1403 | if (fp->mode == 's') |
634763e8 | 1404 | { |
75bd9771 | 1405 | if (cups_write(fp, fp->printf_buffer, bytes) < 0) |
634763e8 MS |
1406 | return (-1); |
1407 | ||
1408 | fp->pos += bytes; | |
1409 | ||
e07d4801 | 1410 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 MS |
1411 | |
1412 | return (bytes); | |
1413 | } | |
ef416fc2 | 1414 | |
1415 | if ((fp->ptr + bytes) > fp->end) | |
1416 | if (cupsFileFlush(fp)) | |
1417 | return (-1); | |
1418 | ||
1419 | fp->pos += bytes; | |
1420 | ||
e07d4801 | 1421 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1422 | |
ef416fc2 | 1423 | if (bytes > sizeof(fp->buf)) |
1424 | { | |
1425 | #ifdef HAVE_LIBZ | |
1426 | if (fp->compressed) | |
75bd9771 | 1427 | return (cups_compress(fp, fp->printf_buffer, bytes)); |
ef416fc2 | 1428 | else |
1429 | #endif /* HAVE_LIBZ */ | |
75bd9771 | 1430 | return (cups_write(fp, fp->printf_buffer, bytes)); |
ef416fc2 | 1431 | } |
1432 | else | |
1433 | { | |
75bd9771 | 1434 | memcpy(fp->ptr, fp->printf_buffer, bytes); |
ef416fc2 | 1435 | fp->ptr += bytes; |
1436 | return (bytes); | |
1437 | } | |
1438 | } | |
1439 | ||
1440 | ||
1441 | /* | |
1442 | * 'cupsFilePutChar()' - Write a character. | |
5a738aea | 1443 | * |
426c6a59 | 1444 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1445 | */ |
1446 | ||
1447 | int /* O - 0 on success, -1 on error */ | |
1448 | cupsFilePutChar(cups_file_t *fp, /* I - CUPS file */ | |
1449 | int c) /* I - Character to write */ | |
1450 | { | |
1451 | /* | |
1452 | * Range check input... | |
1453 | */ | |
1454 | ||
1455 | if (!fp || (fp->mode != 'w' && fp->mode != 's')) | |
1456 | return (-1); | |
1457 | ||
1458 | if (fp->mode == 's') | |
1459 | { | |
1460 | /* | |
1461 | * Send character immediately over socket... | |
1462 | */ | |
1463 | ||
1464 | char ch; /* Output character */ | |
1465 | ||
1466 | ||
1467 | ch = c; | |
1468 | ||
1469 | if (send(fp->fd, &ch, 1, 0) < 1) | |
1470 | return (-1); | |
1471 | } | |
1472 | else | |
1473 | { | |
1474 | /* | |
1475 | * Buffer it up... | |
1476 | */ | |
1477 | ||
1478 | if (fp->ptr >= fp->end) | |
1479 | if (cupsFileFlush(fp)) | |
1480 | return (-1); | |
1481 | ||
1482 | *(fp->ptr) ++ = c; | |
1483 | } | |
1484 | ||
1485 | fp->pos ++; | |
1486 | ||
e07d4801 | 1487 | DEBUG_printf(("4cupsFilePutChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1488 | |
ef416fc2 | 1489 | return (0); |
1490 | } | |
1491 | ||
1492 | ||
58dc1933 MS |
1493 | /* |
1494 | * 'cupsFilePutConf()' - Write a configuration line. | |
1495 | * | |
1496 | * This function handles any comment escaping of the value. | |
1497 | * | |
178cb736 | 1498 | * @since CUPS 1.4/Mac OS X 10.6@ |
58dc1933 MS |
1499 | */ |
1500 | ||
1501 | ssize_t /* O - Number of bytes written or -1 on error */ | |
1502 | cupsFilePutConf(cups_file_t *fp, /* I - CUPS file */ | |
1503 | const char *directive, /* I - Directive */ | |
1504 | const char *value) /* I - Value */ | |
1505 | { | |
1506 | ssize_t bytes, /* Number of bytes written */ | |
1507 | temp; /* Temporary byte count */ | |
1508 | const char *ptr; /* Pointer into value */ | |
1509 | ||
1510 | ||
1511 | if (!fp || !directive || !*directive) | |
1512 | return (-1); | |
1513 | ||
1514 | if ((bytes = cupsFilePuts(fp, directive)) < 0) | |
1515 | return (-1); | |
1516 | ||
1517 | if (cupsFilePutChar(fp, ' ') < 0) | |
1518 | return (-1); | |
1519 | bytes ++; | |
1520 | ||
1521 | if (value && *value) | |
1522 | { | |
1523 | if ((ptr = strchr(value, '#')) != NULL) | |
1524 | { | |
1525 | /* | |
1526 | * Need to quote the first # in the info string... | |
1527 | */ | |
1528 | ||
1529 | if ((temp = cupsFileWrite(fp, value, ptr - value)) < 0) | |
1530 | return (-1); | |
1531 | bytes += temp; | |
1532 | ||
1533 | if (cupsFilePutChar(fp, '\\') < 0) | |
1534 | return (-1); | |
1535 | bytes ++; | |
1536 | ||
1537 | if ((temp = cupsFilePuts(fp, ptr)) < 0) | |
1538 | return (-1); | |
1539 | bytes += temp; | |
1540 | } | |
1541 | else if ((temp = cupsFilePuts(fp, value)) < 0) | |
1542 | return (-1); | |
1543 | else | |
1544 | bytes += temp; | |
1545 | } | |
1546 | ||
1547 | if (cupsFilePutChar(fp, '\n') < 0) | |
1548 | return (-1); | |
1549 | else | |
1550 | return (bytes + 1); | |
1551 | } | |
1552 | ||
1553 | ||
ef416fc2 | 1554 | /* |
1555 | * 'cupsFilePuts()' - Write a string. | |
5a738aea MS |
1556 | * |
1557 | * Like the @code fputs@ function, no newline is appended to the string. | |
1558 | * | |
426c6a59 | 1559 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1560 | */ |
1561 | ||
5a738aea | 1562 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1563 | cupsFilePuts(cups_file_t *fp, /* I - CUPS file */ |
1564 | const char *s) /* I - String to write */ | |
1565 | { | |
2abf387c | 1566 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 1567 | |
1568 | ||
1569 | /* | |
1570 | * Range check input... | |
1571 | */ | |
1572 | ||
1573 | if (!fp || !s || (fp->mode != 'w' && fp->mode != 's')) | |
1574 | return (-1); | |
1575 | ||
1576 | /* | |
1577 | * Write the string... | |
1578 | */ | |
1579 | ||
b86bc4cf | 1580 | bytes = (int)strlen(s); |
ef416fc2 | 1581 | |
1582 | if (fp->mode == 's') | |
1583 | { | |
1584 | if (cups_write(fp, s, bytes) < 0) | |
1585 | return (-1); | |
1586 | ||
1587 | fp->pos += bytes; | |
1588 | ||
e07d4801 | 1589 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1590 | |
ef416fc2 | 1591 | return (bytes); |
1592 | } | |
1593 | ||
1594 | if ((fp->ptr + bytes) > fp->end) | |
1595 | if (cupsFileFlush(fp)) | |
1596 | return (-1); | |
1597 | ||
1598 | fp->pos += bytes; | |
1599 | ||
e07d4801 | 1600 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1601 | |
ef416fc2 | 1602 | if (bytes > sizeof(fp->buf)) |
1603 | { | |
1604 | #ifdef HAVE_LIBZ | |
1605 | if (fp->compressed) | |
1606 | return (cups_compress(fp, s, bytes)); | |
1607 | else | |
1608 | #endif /* HAVE_LIBZ */ | |
1609 | return (cups_write(fp, s, bytes)); | |
1610 | } | |
1611 | else | |
1612 | { | |
1613 | memcpy(fp->ptr, s, bytes); | |
1614 | fp->ptr += bytes; | |
1615 | return (bytes); | |
1616 | } | |
1617 | } | |
1618 | ||
1619 | ||
1620 | /* | |
1621 | * 'cupsFileRead()' - Read from a file. | |
5a738aea | 1622 | * |
426c6a59 | 1623 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1624 | */ |
1625 | ||
5a738aea | 1626 | ssize_t /* O - Number of bytes read or -1 on error */ |
ef416fc2 | 1627 | cupsFileRead(cups_file_t *fp, /* I - CUPS file */ |
1628 | char *buf, /* O - Buffer */ | |
1629 | size_t bytes) /* I - Number of bytes to read */ | |
1630 | { | |
2abf387c | 1631 | size_t total; /* Total bytes read */ |
1632 | ssize_t count; /* Bytes read */ | |
ef416fc2 | 1633 | |
1634 | ||
e07d4801 | 1635 | DEBUG_printf(("2cupsFileRead(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 1636 | CUPS_LLCAST bytes)); |
ef416fc2 | 1637 | |
1638 | /* | |
1639 | * Range check input... | |
1640 | */ | |
1641 | ||
82f97232 | 1642 | if (!fp || !buf || (fp->mode != 'r' && fp->mode != 's')) |
ef416fc2 | 1643 | return (-1); |
1644 | ||
1645 | if (bytes == 0) | |
1646 | return (0); | |
1647 | ||
1648 | /* | |
1649 | * Loop until all bytes are read... | |
1650 | */ | |
1651 | ||
1652 | total = 0; | |
1653 | while (bytes > 0) | |
1654 | { | |
1655 | if (fp->ptr >= fp->end) | |
1656 | if (cups_fill(fp) <= 0) | |
1657 | { | |
e07d4801 MS |
1658 | DEBUG_printf(("4cupsFileRead: cups_fill() returned -1, total=" |
1659 | CUPS_LLFMT, CUPS_LLCAST total)); | |
ef416fc2 | 1660 | |
1661 | if (total > 0) | |
b86bc4cf | 1662 | return ((ssize_t)total); |
ef416fc2 | 1663 | else |
1664 | return (-1); | |
1665 | } | |
1666 | ||
b86bc4cf | 1667 | count = (ssize_t)(fp->end - fp->ptr); |
1668 | if (count > (ssize_t)bytes) | |
1669 | count = (ssize_t)bytes; | |
ef416fc2 | 1670 | |
1671 | memcpy(buf, fp->ptr, count); | |
1672 | fp->ptr += count; | |
634763e8 MS |
1673 | fp->pos += count; |
1674 | ||
e07d4801 | 1675 | DEBUG_printf(("4cupsFileRead: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1676 | |
1677 | /* | |
1678 | * Update the counts for the last read... | |
1679 | */ | |
1680 | ||
1681 | bytes -= count; | |
1682 | total += count; | |
1683 | buf += count; | |
1684 | } | |
1685 | ||
1686 | /* | |
1687 | * Return the total number of bytes read... | |
1688 | */ | |
1689 | ||
e07d4801 | 1690 | DEBUG_printf(("3cupsFileRead: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
ef416fc2 | 1691 | |
b86bc4cf | 1692 | return ((ssize_t)total); |
ef416fc2 | 1693 | } |
1694 | ||
1695 | ||
1696 | /* | |
5a738aea MS |
1697 | * 'cupsFileRewind()' - Set the current file position to the beginning of the |
1698 | * file. | |
1699 | * | |
426c6a59 | 1700 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1701 | */ |
1702 | ||
5a738aea | 1703 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1704 | cupsFileRewind(cups_file_t *fp) /* I - CUPS file */ |
1705 | { | |
80ca4592 | 1706 | /* |
1707 | * Range check input... | |
1708 | */ | |
1709 | ||
e07d4801 MS |
1710 | DEBUG_printf(("cupsFileRewind(fp=%p)", fp)); |
1711 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); | |
634763e8 | 1712 | |
80ca4592 | 1713 | if (!fp || fp->mode != 'r') |
1714 | return (-1); | |
1715 | ||
1716 | /* | |
1717 | * Handle special cases... | |
1718 | */ | |
1719 | ||
634763e8 | 1720 | if (fp->bufpos == 0) |
80ca4592 | 1721 | { |
1722 | /* | |
1723 | * No seeking necessary... | |
1724 | */ | |
1725 | ||
634763e8 MS |
1726 | fp->pos = 0; |
1727 | ||
80ca4592 | 1728 | if (fp->ptr) |
1729 | { | |
1730 | fp->ptr = fp->buf; | |
1731 | fp->eof = 0; | |
1732 | } | |
1733 | ||
e07d4801 | 1734 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1735 | |
80ca4592 | 1736 | return (0); |
1737 | } | |
1738 | ||
1739 | /* | |
1740 | * Otherwise, seek in the file and cleanup any compression buffers... | |
1741 | */ | |
1742 | ||
1743 | #ifdef HAVE_LIBZ | |
1744 | if (fp->compressed) | |
1745 | { | |
1746 | inflateEnd(&fp->stream); | |
1747 | fp->compressed = 0; | |
1748 | } | |
1749 | #endif /* HAVE_LIBZ */ | |
1750 | ||
c9fc04c6 MS |
1751 | if (lseek(fp->fd, 0, SEEK_SET)) |
1752 | { | |
e07d4801 | 1753 | DEBUG_printf(("1cupsFileRewind: lseek failed: %s", strerror(errno))); |
c9fc04c6 MS |
1754 | return (-1); |
1755 | } | |
80ca4592 | 1756 | |
634763e8 MS |
1757 | fp->bufpos = 0; |
1758 | fp->pos = 0; | |
1759 | fp->ptr = NULL; | |
1760 | fp->end = NULL; | |
1761 | fp->eof = 0; | |
1762 | ||
e07d4801 | 1763 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
80ca4592 | 1764 | |
1765 | return (0); | |
ef416fc2 | 1766 | } |
1767 | ||
1768 | ||
1769 | /* | |
1770 | * 'cupsFileSeek()' - Seek in a file. | |
5a738aea | 1771 | * |
426c6a59 | 1772 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1773 | */ |
1774 | ||
5a738aea | 1775 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1776 | cupsFileSeek(cups_file_t *fp, /* I - CUPS file */ |
1777 | off_t pos) /* I - Position in file */ | |
1778 | { | |
2abf387c | 1779 | ssize_t bytes; /* Number bytes in buffer */ |
ef416fc2 | 1780 | |
1781 | ||
e07d4801 | 1782 | DEBUG_printf(("cupsFileSeek(fp=%p, pos=" CUPS_LLFMT ")", fp, |
634763e8 | 1783 | CUPS_LLCAST pos)); |
e07d4801 MS |
1784 | DEBUG_printf(("2cupsFileSeek: fp->pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
1785 | DEBUG_printf(("2cupsFileSeek: fp->ptr=%p, fp->end=%p", fp->ptr, fp->end)); | |
ef416fc2 | 1786 | |
1787 | /* | |
1788 | * Range check input... | |
1789 | */ | |
1790 | ||
1791 | if (!fp || pos < 0 || fp->mode != 'r') | |
1792 | return (-1); | |
1793 | ||
80ca4592 | 1794 | /* |
1795 | * Handle special cases... | |
1796 | */ | |
1797 | ||
1798 | if (pos == 0) | |
1799 | return (cupsFileRewind(fp)); | |
1800 | ||
634763e8 | 1801 | if (fp->ptr) |
b423cd4c | 1802 | { |
634763e8 | 1803 | bytes = (ssize_t)(fp->end - fp->buf); |
b423cd4c | 1804 | |
e07d4801 | 1805 | DEBUG_printf(("2cupsFileSeek: bytes=" CUPS_LLFMT, CUPS_LLCAST bytes)); |
c168a833 | 1806 | |
634763e8 | 1807 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
b423cd4c | 1808 | { |
634763e8 MS |
1809 | /* |
1810 | * No seeking necessary... | |
1811 | */ | |
1812 | ||
1813 | fp->pos = pos; | |
1814 | fp->ptr = fp->buf + pos - fp->bufpos; | |
b423cd4c | 1815 | fp->eof = 0; |
b423cd4c | 1816 | |
634763e8 MS |
1817 | return (pos); |
1818 | } | |
b423cd4c | 1819 | } |
1820 | ||
80ca4592 | 1821 | #ifdef HAVE_LIBZ |
1822 | if (!fp->compressed && !fp->ptr) | |
1823 | { | |
1824 | /* | |
1825 | * Preload a buffer to determine whether the file is compressed... | |
1826 | */ | |
1827 | ||
1828 | if (cups_fill(fp) < 0) | |
1829 | return (-1); | |
1830 | } | |
1831 | #endif /* HAVE_LIBZ */ | |
1832 | ||
ef416fc2 | 1833 | /* |
634763e8 | 1834 | * Seek forwards or backwards... |
ef416fc2 | 1835 | */ |
1836 | ||
ef416fc2 | 1837 | fp->eof = 0; |
1838 | ||
634763e8 | 1839 | if (pos < fp->bufpos) |
ef416fc2 | 1840 | { |
1841 | /* | |
1842 | * Need to seek backwards... | |
1843 | */ | |
1844 | ||
e07d4801 | 1845 | DEBUG_puts("2cupsFileSeek: SEEK BACKWARDS"); |
80ca4592 | 1846 | |
ef416fc2 | 1847 | #ifdef HAVE_LIBZ |
1848 | if (fp->compressed) | |
1849 | { | |
1850 | inflateEnd(&fp->stream); | |
1851 | ||
1852 | lseek(fp->fd, 0, SEEK_SET); | |
634763e8 MS |
1853 | fp->bufpos = 0; |
1854 | fp->pos = 0; | |
1855 | fp->ptr = NULL; | |
1856 | fp->end = NULL; | |
ef416fc2 | 1857 | |
1858 | while ((bytes = cups_fill(fp)) > 0) | |
634763e8 | 1859 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1860 | break; |
1861 | ||
1862 | if (bytes <= 0) | |
1863 | return (-1); | |
80ca4592 | 1864 | |
634763e8 MS |
1865 | fp->ptr = fp->buf + pos - fp->bufpos; |
1866 | fp->pos = pos; | |
ef416fc2 | 1867 | } |
1868 | else | |
1869 | #endif /* HAVE_LIBZ */ | |
1870 | { | |
634763e8 MS |
1871 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1872 | fp->pos = fp->bufpos; | |
1873 | fp->ptr = NULL; | |
1874 | fp->end = NULL; | |
80ca4592 | 1875 | |
e07d4801 | 1876 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1877 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1878 | } |
1879 | } | |
634763e8 | 1880 | else |
ef416fc2 | 1881 | { |
1882 | /* | |
1883 | * Need to seek forwards... | |
1884 | */ | |
1885 | ||
e07d4801 | 1886 | DEBUG_puts("2cupsFileSeek: SEEK FORWARDS"); |
80ca4592 | 1887 | |
ef416fc2 | 1888 | #ifdef HAVE_LIBZ |
80ca4592 | 1889 | if (fp->compressed) |
ef416fc2 | 1890 | { |
1891 | while ((bytes = cups_fill(fp)) > 0) | |
80ca4592 | 1892 | { |
634763e8 | 1893 | if (pos >= fp->bufpos && pos < (fp->bufpos + bytes)) |
ef416fc2 | 1894 | break; |
80ca4592 | 1895 | } |
ef416fc2 | 1896 | |
1897 | if (bytes <= 0) | |
1898 | return (-1); | |
80ca4592 | 1899 | |
634763e8 MS |
1900 | fp->ptr = fp->buf + pos - fp->bufpos; |
1901 | fp->pos = pos; | |
ef416fc2 | 1902 | } |
1903 | else | |
1904 | #endif /* HAVE_LIBZ */ | |
1905 | { | |
634763e8 MS |
1906 | fp->bufpos = lseek(fp->fd, pos, SEEK_SET); |
1907 | fp->pos = fp->bufpos; | |
1908 | fp->ptr = NULL; | |
1909 | fp->end = NULL; | |
80ca4592 | 1910 | |
e07d4801 | 1911 | DEBUG_printf(("2cupsFileSeek: lseek() returned " CUPS_LLFMT, |
634763e8 | 1912 | CUPS_LLCAST fp->pos)); |
ef416fc2 | 1913 | } |
1914 | } | |
ef416fc2 | 1915 | |
e07d4801 | 1916 | DEBUG_printf(("2cupsFileSeek: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1917 | |
1918 | return (fp->pos); | |
1919 | } | |
1920 | ||
1921 | ||
80ca4592 | 1922 | /* |
1923 | * 'cupsFileStderr()' - Return a CUPS file associated with stderr. | |
5a738aea | 1924 | * |
426c6a59 | 1925 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 1926 | */ |
1927 | ||
5a738aea | 1928 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1929 | cupsFileStderr(void) |
1930 | { | |
1931 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1932 | ||
1933 | ||
1934 | /* | |
1935 | * Open file descriptor 2 as needed... | |
1936 | */ | |
1937 | ||
1938 | if (!cg->stdio_files[2]) | |
1939 | { | |
1940 | /* | |
1941 | * Flush any pending output on the stdio file... | |
1942 | */ | |
1943 | ||
1944 | fflush(stderr); | |
1945 | ||
1946 | /* | |
1947 | * Open file descriptor 2... | |
1948 | */ | |
1949 | ||
1950 | if ((cg->stdio_files[2] = cupsFileOpenFd(2, "w")) != NULL) | |
1951 | cg->stdio_files[2]->is_stdio = 1; | |
1952 | } | |
1953 | ||
1954 | return (cg->stdio_files[2]); | |
1955 | } | |
1956 | ||
1957 | ||
1958 | /* | |
1959 | * 'cupsFileStdin()' - Return a CUPS file associated with stdin. | |
5a738aea | 1960 | * |
426c6a59 | 1961 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 1962 | */ |
1963 | ||
5a738aea | 1964 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1965 | cupsFileStdin(void) |
1966 | { | |
1967 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1968 | ||
1969 | ||
1970 | /* | |
1971 | * Open file descriptor 0 as needed... | |
1972 | */ | |
1973 | ||
1974 | if (!cg->stdio_files[0]) | |
1975 | { | |
1976 | /* | |
1977 | * Open file descriptor 0... | |
1978 | */ | |
1979 | ||
1980 | if ((cg->stdio_files[0] = cupsFileOpenFd(0, "r")) != NULL) | |
1981 | cg->stdio_files[0]->is_stdio = 1; | |
1982 | } | |
1983 | ||
1984 | return (cg->stdio_files[0]); | |
1985 | } | |
1986 | ||
1987 | ||
1988 | /* | |
1989 | * 'cupsFileStdout()' - Return a CUPS file associated with stdout. | |
5a738aea | 1990 | * |
426c6a59 | 1991 | * @since CUPS 1.2/Mac OS X 10.5@ |
80ca4592 | 1992 | */ |
1993 | ||
5a738aea | 1994 | cups_file_t * /* O - CUPS file */ |
80ca4592 | 1995 | cupsFileStdout(void) |
1996 | { | |
1997 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals... */ | |
1998 | ||
1999 | ||
2000 | /* | |
2001 | * Open file descriptor 1 as needed... | |
2002 | */ | |
2003 | ||
2004 | if (!cg->stdio_files[1]) | |
2005 | { | |
2006 | /* | |
2007 | * Flush any pending output on the stdio file... | |
2008 | */ | |
2009 | ||
2010 | fflush(stdout); | |
2011 | ||
2012 | /* | |
2013 | * Open file descriptor 1... | |
2014 | */ | |
2015 | ||
2016 | if ((cg->stdio_files[1] = cupsFileOpenFd(1, "w")) != NULL) | |
2017 | cg->stdio_files[1]->is_stdio = 1; | |
2018 | } | |
2019 | ||
2020 | return (cg->stdio_files[1]); | |
2021 | } | |
2022 | ||
2023 | ||
ef416fc2 | 2024 | /* |
2025 | * 'cupsFileTell()' - Return the current file position. | |
5a738aea | 2026 | * |
426c6a59 | 2027 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 2028 | */ |
2029 | ||
2030 | off_t /* O - File position */ | |
2031 | cupsFileTell(cups_file_t *fp) /* I - CUPS file */ | |
2032 | { | |
e07d4801 MS |
2033 | DEBUG_printf(("2cupsFileTell(fp=%p)", fp)); |
2034 | DEBUG_printf(("3cupsFileTell: pos=" CUPS_LLFMT, | |
2035 | CUPS_LLCAST (fp ? fp->pos : -1))); | |
634763e8 | 2036 | |
80ca4592 | 2037 | return (fp ? fp->pos : 0); |
ef416fc2 | 2038 | } |
2039 | ||
2040 | ||
2041 | /* | |
2042 | * 'cupsFileUnlock()' - Unlock access to a file. | |
5a738aea | 2043 | * |
426c6a59 | 2044 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 2045 | */ |
2046 | ||
2047 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 2048 | cupsFileUnlock(cups_file_t *fp) /* I - CUPS file */ |
ef416fc2 | 2049 | { |
2050 | /* | |
2051 | * Range check... | |
2052 | */ | |
2053 | ||
e07d4801 | 2054 | DEBUG_printf(("cupsFileUnlock(fp=%p)", fp)); |
634763e8 | 2055 | |
ef416fc2 | 2056 | if (!fp || fp->mode == 's') |
2057 | return (-1); | |
2058 | ||
2059 | /* | |
2060 | * Unlock... | |
2061 | */ | |
2062 | ||
2063 | #ifdef WIN32 | |
536bc2c6 | 2064 | return (_locking(fp->fd, _LK_UNLCK, 0)); |
ef416fc2 | 2065 | #else |
2066 | return (lockf(fp->fd, F_ULOCK, 0)); | |
2067 | #endif /* WIN32 */ | |
2068 | } | |
2069 | ||
2070 | ||
2071 | /* | |
2072 | * 'cupsFileWrite()' - Write to a file. | |
5a738aea | 2073 | * |
426c6a59 | 2074 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 2075 | */ |
2076 | ||
5a738aea | 2077 | ssize_t /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 2078 | cupsFileWrite(cups_file_t *fp, /* I - CUPS file */ |
2079 | const char *buf, /* I - Buffer */ | |
2080 | size_t bytes) /* I - Number of bytes to write */ | |
2081 | { | |
2082 | /* | |
2083 | * Range check input... | |
2084 | */ | |
2085 | ||
e07d4801 | 2086 | DEBUG_printf(("2cupsFileWrite(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", |
634763e8 MS |
2087 | fp, buf, CUPS_LLCAST bytes)); |
2088 | ||
82f97232 | 2089 | if (!fp || !buf || (fp->mode != 'w' && fp->mode != 's')) |
ef416fc2 | 2090 | return (-1); |
2091 | ||
2092 | if (bytes == 0) | |
2093 | return (0); | |
2094 | ||
2095 | /* | |
2096 | * Write the buffer... | |
2097 | */ | |
2098 | ||
2099 | if (fp->mode == 's') | |
2100 | { | |
2101 | if (cups_write(fp, buf, bytes) < 0) | |
2102 | return (-1); | |
2103 | ||
b86bc4cf | 2104 | fp->pos += (off_t)bytes; |
ef416fc2 | 2105 | |
e07d4801 | 2106 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2107 | |
b86bc4cf | 2108 | return ((ssize_t)bytes); |
ef416fc2 | 2109 | } |
2110 | ||
2111 | if ((fp->ptr + bytes) > fp->end) | |
2112 | if (cupsFileFlush(fp)) | |
2113 | return (-1); | |
2114 | ||
b86bc4cf | 2115 | fp->pos += (off_t)bytes; |
ef416fc2 | 2116 | |
e07d4801 | 2117 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2118 | |
ef416fc2 | 2119 | if (bytes > sizeof(fp->buf)) |
2120 | { | |
2121 | #ifdef HAVE_LIBZ | |
2122 | if (fp->compressed) | |
2123 | return (cups_compress(fp, buf, bytes)); | |
2124 | else | |
2125 | #endif /* HAVE_LIBZ */ | |
2126 | return (cups_write(fp, buf, bytes)); | |
2127 | } | |
2128 | else | |
2129 | { | |
2130 | memcpy(fp->ptr, buf, bytes); | |
2131 | fp->ptr += bytes; | |
b86bc4cf | 2132 | return ((ssize_t)bytes); |
ef416fc2 | 2133 | } |
2134 | } | |
2135 | ||
2136 | ||
2137 | #ifdef HAVE_LIBZ | |
2138 | /* | |
22c9029b | 2139 | * 'cups_compress()' - Compress a buffer of data. |
ef416fc2 | 2140 | */ |
2141 | ||
2142 | static ssize_t /* O - Number of bytes written or -1 */ | |
2143 | cups_compress(cups_file_t *fp, /* I - CUPS file */ | |
2144 | const char *buf, /* I - Buffer */ | |
2145 | size_t bytes) /* I - Number bytes */ | |
2146 | { | |
e07d4801 | 2147 | DEBUG_printf(("7cups_compress(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2148 | CUPS_LLCAST bytes)); |
ecdc0628 | 2149 | |
ef416fc2 | 2150 | /* |
2151 | * Update the CRC... | |
2152 | */ | |
2153 | ||
2154 | fp->crc = crc32(fp->crc, (const Bytef *)buf, bytes); | |
2155 | ||
2156 | /* | |
2157 | * Deflate the bytes... | |
2158 | */ | |
2159 | ||
2160 | fp->stream.next_in = (Bytef *)buf; | |
2161 | fp->stream.avail_in = bytes; | |
2162 | ||
2163 | while (fp->stream.avail_in > 0) | |
2164 | { | |
2165 | /* | |
2166 | * Flush the current buffer... | |
2167 | */ | |
2168 | ||
e07d4801 | 2169 | DEBUG_printf(("9cups_compress: avail_in=%d, avail_out=%d", |
634763e8 | 2170 | fp->stream.avail_in, fp->stream.avail_out)); |
ecdc0628 | 2171 | |
ef416fc2 | 2172 | if (fp->stream.avail_out < (int)(sizeof(fp->cbuf) / 8)) |
2173 | { | |
2174 | if (cups_write(fp, (char *)fp->cbuf, fp->stream.next_out - fp->cbuf) < 0) | |
2175 | return (-1); | |
ecdc0628 | 2176 | |
2177 | fp->stream.next_out = fp->cbuf; | |
2178 | fp->stream.avail_out = sizeof(fp->cbuf); | |
ef416fc2 | 2179 | } |
2180 | ||
2181 | deflate(&(fp->stream), Z_NO_FLUSH); | |
2182 | } | |
2183 | ||
2184 | return (bytes); | |
2185 | } | |
2186 | #endif /* HAVE_LIBZ */ | |
2187 | ||
2188 | ||
2189 | /* | |
22c9029b | 2190 | * 'cups_fill()' - Fill the input buffer. |
ef416fc2 | 2191 | */ |
2192 | ||
2193 | static ssize_t /* O - Number of bytes or -1 */ | |
2194 | cups_fill(cups_file_t *fp) /* I - CUPS file */ | |
2195 | { | |
2196 | ssize_t bytes; /* Number of bytes read */ | |
2197 | #ifdef HAVE_LIBZ | |
c277e2f8 | 2198 | int status; /* Decompression status */ |
ef416fc2 | 2199 | const unsigned char *ptr, /* Pointer into buffer */ |
2200 | *end; /* End of buffer */ | |
2201 | #endif /* HAVE_LIBZ */ | |
2202 | ||
2203 | ||
e07d4801 MS |
2204 | DEBUG_printf(("7cups_fill(fp=%p)", fp)); |
2205 | DEBUG_printf(("9cups_fill: fp->ptr=%p, fp->end=%p, fp->buf=%p, " | |
2206 | "fp->bufpos=" CUPS_LLFMT ", fp->eof=%d", | |
634763e8 | 2207 | fp->ptr, fp->end, fp->buf, CUPS_LLCAST fp->bufpos, fp->eof)); |
ef416fc2 | 2208 | |
2209 | if (fp->ptr && fp->end) | |
c9fc04c6 | 2210 | fp->bufpos += fp->end - fp->buf; |
ef416fc2 | 2211 | |
2212 | #ifdef HAVE_LIBZ | |
e07d4801 | 2213 | DEBUG_printf(("9cups_fill: fp->compressed=%d", fp->compressed)); |
b423cd4c | 2214 | |
ef416fc2 | 2215 | while (!fp->ptr || fp->compressed) |
2216 | { | |
2217 | /* | |
2218 | * Check to see if we have read any data yet; if not, see if we have a | |
2219 | * compressed file... | |
2220 | */ | |
2221 | ||
2222 | if (!fp->ptr) | |
2223 | { | |
2224 | /* | |
2225 | * Reset the file position in case we are seeking... | |
2226 | */ | |
2227 | ||
2228 | fp->compressed = 0; | |
ef416fc2 | 2229 | |
2230 | /* | |
2231 | * Read the first bytes in the file to determine if we have a gzip'd | |
2232 | * file... | |
2233 | */ | |
2234 | ||
fa73b229 | 2235 | if ((bytes = cups_read(fp, (char *)fp->buf, sizeof(fp->buf))) < 0) |
ef416fc2 | 2236 | { |
2237 | /* | |
2238 | * Can't read from file! | |
2239 | */ | |
2240 | ||
e07d4801 | 2241 | DEBUG_printf(("9cups_fill: cups_read() returned " CUPS_LLFMT, |
b423cd4c | 2242 | CUPS_LLCAST bytes)); |
2243 | ||
ef416fc2 | 2244 | return (-1); |
2245 | } | |
2246 | ||
fa73b229 | 2247 | if (bytes < 10 || fp->buf[0] != 0x1f || |
e00b005a | 2248 | (fp->buf[1] & 255) != 0x8b || |
fa73b229 | 2249 | fp->buf[2] != 8 || (fp->buf[3] & 0xe0) != 0) |
ef416fc2 | 2250 | { |
2251 | /* | |
2252 | * Not a gzip'd file! | |
2253 | */ | |
2254 | ||
ef416fc2 | 2255 | fp->ptr = fp->buf; |
2256 | fp->end = fp->buf + bytes; | |
2257 | ||
e07d4801 | 2258 | DEBUG_printf(("9cups_fill: Returning " CUPS_LLFMT, |
c9fc04c6 | 2259 | CUPS_LLCAST bytes)); |
b423cd4c | 2260 | |
ef416fc2 | 2261 | return (bytes); |
2262 | } | |
2263 | ||
2264 | /* | |
2265 | * Parse header junk: extra data, original name, and comment... | |
2266 | */ | |
2267 | ||
fa73b229 | 2268 | ptr = (unsigned char *)fp->buf + 10; |
2269 | end = (unsigned char *)fp->buf + bytes; | |
ef416fc2 | 2270 | |
fa73b229 | 2271 | if (fp->buf[3] & 0x04) |
ef416fc2 | 2272 | { |
2273 | /* | |
2274 | * Skip extra data... | |
2275 | */ | |
2276 | ||
2277 | if ((ptr + 2) > end) | |
2278 | { | |
2279 | /* | |
2280 | * Can't read from file! | |
2281 | */ | |
2282 | ||
2283 | return (-1); | |
2284 | } | |
2285 | ||
2286 | bytes = ((unsigned char)ptr[1] << 8) | (unsigned char)ptr[0]; | |
2287 | ptr += 2 + bytes; | |
2288 | ||
2289 | if (ptr > end) | |
2290 | { | |
2291 | /* | |
2292 | * Can't read from file! | |
2293 | */ | |
2294 | ||
2295 | return (-1); | |
2296 | } | |
2297 | } | |
2298 | ||
fa73b229 | 2299 | if (fp->buf[3] & 0x08) |
ef416fc2 | 2300 | { |
2301 | /* | |
2302 | * Skip original name data... | |
2303 | */ | |
2304 | ||
2305 | while (ptr < end && *ptr) | |
2306 | ptr ++; | |
2307 | ||
2308 | if (ptr < end) | |
2309 | ptr ++; | |
2310 | else | |
2311 | { | |
2312 | /* | |
2313 | * Can't read from file! | |
2314 | */ | |
2315 | ||
2316 | return (-1); | |
2317 | } | |
2318 | } | |
2319 | ||
fa73b229 | 2320 | if (fp->buf[3] & 0x10) |
ef416fc2 | 2321 | { |
2322 | /* | |
2323 | * Skip comment data... | |
2324 | */ | |
2325 | ||
2326 | while (ptr < end && *ptr) | |
2327 | ptr ++; | |
2328 | ||
2329 | if (ptr < end) | |
2330 | ptr ++; | |
2331 | else | |
2332 | { | |
2333 | /* | |
2334 | * Can't read from file! | |
2335 | */ | |
2336 | ||
2337 | return (-1); | |
2338 | } | |
2339 | } | |
2340 | ||
fa73b229 | 2341 | if (fp->buf[3] & 0x02) |
ef416fc2 | 2342 | { |
2343 | /* | |
2344 | * Skip header CRC data... | |
2345 | */ | |
2346 | ||
2347 | ptr += 2; | |
2348 | ||
2349 | if (ptr > end) | |
2350 | { | |
2351 | /* | |
2352 | * Can't read from file! | |
2353 | */ | |
2354 | ||
2355 | return (-1); | |
2356 | } | |
2357 | } | |
2358 | ||
fa73b229 | 2359 | /* |
2360 | * Copy the flate-compressed data to the compression buffer... | |
2361 | */ | |
2362 | ||
2363 | if ((bytes = end - ptr) > 0) | |
2364 | memcpy(fp->cbuf, ptr, bytes); | |
2365 | ||
ef416fc2 | 2366 | /* |
2367 | * Setup the decompressor data... | |
2368 | */ | |
2369 | ||
2370 | fp->stream.zalloc = (alloc_func)0; | |
2371 | fp->stream.zfree = (free_func)0; | |
2372 | fp->stream.opaque = (voidpf)0; | |
fa73b229 | 2373 | fp->stream.next_in = (Bytef *)fp->cbuf; |
ef416fc2 | 2374 | fp->stream.next_out = NULL; |
fa73b229 | 2375 | fp->stream.avail_in = bytes; |
ef416fc2 | 2376 | fp->stream.avail_out = 0; |
2377 | fp->crc = crc32(0L, Z_NULL, 0); | |
2378 | ||
2379 | if (inflateInit2(&(fp->stream), -15) != Z_OK) | |
2380 | return (-1); | |
2381 | ||
2382 | fp->compressed = 1; | |
2383 | } | |
2384 | ||
2385 | if (fp->compressed) | |
2386 | { | |
2387 | /* | |
2388 | * If we have reached end-of-file, return immediately... | |
2389 | */ | |
2390 | ||
2391 | if (fp->eof) | |
2392 | return (-1); | |
2393 | ||
2394 | /* | |
2395 | * Fill the decompression buffer as needed... | |
2396 | */ | |
2397 | ||
2398 | if (fp->stream.avail_in == 0) | |
2399 | { | |
2400 | if ((bytes = cups_read(fp, (char *)fp->cbuf, sizeof(fp->cbuf))) <= 0) | |
2401 | return (-1); | |
2402 | ||
2403 | fp->stream.next_in = fp->cbuf; | |
2404 | fp->stream.avail_in = bytes; | |
2405 | } | |
2406 | ||
2407 | /* | |
2408 | * Decompress data from the buffer... | |
2409 | */ | |
2410 | ||
2411 | fp->stream.next_out = (Bytef *)fp->buf; | |
2412 | fp->stream.avail_out = sizeof(fp->buf); | |
2413 | ||
c277e2f8 MS |
2414 | status = inflate(&(fp->stream), Z_NO_FLUSH); |
2415 | ||
2416 | if (fp->stream.next_out > (Bytef *)fp->buf) | |
2417 | fp->crc = crc32(fp->crc, (Bytef *)fp->buf, | |
2418 | fp->stream.next_out - (Bytef *)fp->buf); | |
2419 | ||
2420 | if (status == Z_STREAM_END) | |
ef416fc2 | 2421 | { |
2422 | /* | |
2423 | * Read the CRC and length... | |
2424 | */ | |
2425 | ||
2426 | unsigned char trailer[8]; /* Trailer bytes */ | |
2427 | uLong tcrc; /* Trailer CRC */ | |
2428 | ||
2429 | ||
2430 | if (read(fp->fd, trailer, sizeof(trailer)) < sizeof(trailer)) | |
2431 | { | |
2432 | /* | |
2433 | * Can't get it, so mark end-of-file... | |
2434 | */ | |
2435 | ||
2436 | fp->eof = 1; | |
ef416fc2 | 2437 | } |
fa73b229 | 2438 | else |
2439 | { | |
2440 | tcrc = (((((trailer[3] << 8) | trailer[2]) << 8) | trailer[1]) << 8) | | |
2441 | trailer[0]; | |
ef416fc2 | 2442 | |
fa73b229 | 2443 | if (tcrc != fp->crc) |
2444 | { | |
2445 | /* | |
2446 | * Bad CRC, mark end-of-file... | |
2447 | */ | |
2448 | ||
e07d4801 | 2449 | DEBUG_printf(("9cups_fill: tcrc=%08x, fp->crc=%08x", |
c277e2f8 MS |
2450 | (unsigned int)tcrc, (unsigned int)fp->crc)); |
2451 | ||
fa73b229 | 2452 | fp->eof = 1; |
2453 | ||
2454 | return (-1); | |
2455 | } | |
ef416fc2 | 2456 | |
ef416fc2 | 2457 | /* |
fa73b229 | 2458 | * Otherwise, reset the compressed flag so that we re-read the |
2459 | * file header... | |
ef416fc2 | 2460 | */ |
ef416fc2 | 2461 | |
fa73b229 | 2462 | fp->compressed = 0; |
ef416fc2 | 2463 | } |
ef416fc2 | 2464 | } |
2465 | ||
2466 | bytes = sizeof(fp->buf) - fp->stream.avail_out; | |
2467 | ||
2468 | /* | |
2469 | * Return the decompressed data... | |
2470 | */ | |
2471 | ||
2472 | fp->ptr = fp->buf; | |
2473 | fp->end = fp->buf + bytes; | |
2474 | ||
fa73b229 | 2475 | if (bytes) |
2476 | return (bytes); | |
ef416fc2 | 2477 | } |
2478 | } | |
2479 | #endif /* HAVE_LIBZ */ | |
2480 | ||
2481 | /* | |
2482 | * Read a buffer's full of data... | |
2483 | */ | |
2484 | ||
2485 | if ((bytes = cups_read(fp, fp->buf, sizeof(fp->buf))) <= 0) | |
2486 | { | |
2487 | /* | |
2488 | * Can't read from file! | |
2489 | */ | |
2490 | ||
2491 | fp->eof = 1; | |
2492 | fp->ptr = fp->buf; | |
2493 | fp->end = fp->buf; | |
2494 | ||
2495 | return (-1); | |
2496 | } | |
2497 | ||
2498 | /* | |
2499 | * Return the bytes we read... | |
2500 | */ | |
2501 | ||
2502 | fp->eof = 0; | |
2503 | fp->ptr = fp->buf; | |
2504 | fp->end = fp->buf + bytes; | |
2505 | ||
2506 | return (bytes); | |
2507 | } | |
2508 | ||
2509 | ||
c7017ecc MS |
2510 | /* |
2511 | * 'cups_open()' - Safely open a file for writing. | |
2512 | * | |
2513 | * We don't allow appending to directories or files that are hard-linked or | |
2514 | * symlinked. | |
2515 | */ | |
2516 | ||
2517 | static int /* O - File descriptor or -1 otherwise */ | |
2518 | cups_open(const char *filename, /* I - Filename */ | |
2519 | int mode) /* I - Open mode */ | |
2520 | { | |
2521 | int fd; /* File descriptor */ | |
2522 | struct stat fileinfo; /* File information */ | |
2523 | #ifndef WIN32 | |
2524 | struct stat linkinfo; /* Link information */ | |
2525 | #endif /* !WIN32 */ | |
2526 | ||
2527 | ||
2528 | /* | |
2529 | * Open the file... | |
2530 | */ | |
2531 | ||
2532 | if ((fd = open(filename, mode, 0666)) < 0) | |
2533 | return (-1); | |
2534 | ||
2535 | /* | |
2536 | * Then verify that the file descriptor doesn't point to a directory or hard- | |
2537 | * linked file. | |
2538 | */ | |
2539 | ||
2540 | if (fstat(fd, &fileinfo)) | |
2541 | { | |
2542 | close(fd); | |
2543 | return (-1); | |
2544 | } | |
2545 | ||
2546 | if (fileinfo.st_nlink != 1) | |
2547 | { | |
2548 | close(fd); | |
2549 | errno = EPERM; | |
2550 | return (-1); | |
2551 | } | |
2552 | ||
2553 | #ifdef WIN32 | |
2554 | if (fileinfo.st_mode & _S_IFDIR) | |
2555 | #else | |
2556 | if (S_ISDIR(fileinfo.st_mode)) | |
2557 | #endif /* WIN32 */ | |
2558 | { | |
2559 | close(fd); | |
2560 | errno = EISDIR; | |
2561 | return (-1); | |
2562 | } | |
2563 | ||
2564 | #ifndef WIN32 | |
2565 | /* | |
2566 | * Then use lstat to determine whether the filename is a symlink... | |
2567 | */ | |
2568 | ||
2569 | if (lstat(filename, &linkinfo)) | |
2570 | { | |
2571 | close(fd); | |
2572 | return (-1); | |
2573 | } | |
2574 | ||
2575 | if (S_ISLNK(linkinfo.st_mode) || | |
2576 | fileinfo.st_dev != linkinfo.st_dev || | |
2577 | fileinfo.st_ino != linkinfo.st_ino || | |
2578 | #ifdef HAVE_ST_GEN | |
2579 | fileinfo.st_gen != linkinfo.st_gen || | |
2580 | #endif /* HAVE_ST_GEN */ | |
2581 | fileinfo.st_nlink != linkinfo.st_nlink || | |
2582 | fileinfo.st_mode != linkinfo.st_mode) | |
2583 | { | |
2584 | /* | |
2585 | * Yes, don't allow! | |
2586 | */ | |
2587 | ||
2588 | close(fd); | |
2589 | errno = EPERM; | |
2590 | return (-1); | |
2591 | } | |
2592 | #endif /* !WIN32 */ | |
2593 | ||
2594 | return (fd); | |
2595 | } | |
2596 | ||
2597 | ||
ef416fc2 | 2598 | /* |
2599 | * 'cups_read()' - Read from a file descriptor. | |
2600 | */ | |
2601 | ||
2602 | static ssize_t /* O - Number of bytes read or -1 */ | |
2603 | cups_read(cups_file_t *fp, /* I - CUPS file */ | |
2604 | char *buf, /* I - Buffer */ | |
2605 | size_t bytes) /* I - Number bytes */ | |
2606 | { | |
2607 | ssize_t total; /* Total bytes read */ | |
2608 | ||
2609 | ||
e07d4801 | 2610 | DEBUG_printf(("7cups_read(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 MS |
2611 | CUPS_LLCAST bytes)); |
2612 | ||
ef416fc2 | 2613 | /* |
2614 | * Loop until we read at least 0 bytes... | |
2615 | */ | |
2616 | ||
2617 | for (;;) | |
2618 | { | |
b86bc4cf | 2619 | #ifdef WIN32 |
2620 | if (fp->mode == 's') | |
2621 | total = (ssize_t)recv(fp->fd, buf, (unsigned)bytes, 0); | |
2622 | else | |
2623 | total = (ssize_t)read(fp->fd, buf, (unsigned)bytes); | |
2624 | #else | |
ef416fc2 | 2625 | if (fp->mode == 's') |
2626 | total = recv(fp->fd, buf, bytes, 0); | |
2627 | else | |
2628 | total = read(fp->fd, buf, bytes); | |
b86bc4cf | 2629 | #endif /* WIN32 */ |
ef416fc2 | 2630 | |
e07d4801 | 2631 | DEBUG_printf(("9cups_read: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
634763e8 | 2632 | |
ef416fc2 | 2633 | if (total >= 0) |
2634 | break; | |
2635 | ||
2636 | /* | |
2637 | * Reads can be interrupted by signals and unavailable resources... | |
2638 | */ | |
2639 | ||
2640 | if (errno == EAGAIN || errno == EINTR) | |
2641 | continue; | |
2642 | else | |
2643 | return (-1); | |
2644 | } | |
2645 | ||
2646 | /* | |
2647 | * Return the total number of bytes read... | |
2648 | */ | |
2649 | ||
2650 | return (total); | |
2651 | } | |
2652 | ||
2653 | ||
2654 | /* | |
2655 | * 'cups_write()' - Write to a file descriptor. | |
2656 | */ | |
2657 | ||
2658 | static ssize_t /* O - Number of bytes written or -1 */ | |
2659 | cups_write(cups_file_t *fp, /* I - CUPS file */ | |
2660 | const char *buf, /* I - Buffer */ | |
2661 | size_t bytes) /* I - Number bytes */ | |
2662 | { | |
2abf387c | 2663 | size_t total; /* Total bytes written */ |
2664 | ssize_t count; /* Count this time */ | |
ef416fc2 | 2665 | |
2666 | ||
e07d4801 | 2667 | DEBUG_printf(("7cups_write(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", fp, buf, |
634763e8 | 2668 | CUPS_LLCAST bytes)); |
ecdc0628 | 2669 | |
ef416fc2 | 2670 | /* |
2671 | * Loop until all bytes are written... | |
2672 | */ | |
2673 | ||
2674 | total = 0; | |
2675 | while (bytes > 0) | |
2676 | { | |
b86bc4cf | 2677 | #ifdef WIN32 |
2678 | if (fp->mode == 's') | |
2679 | count = (ssize_t)send(fp->fd, buf, (unsigned)bytes, 0); | |
2680 | else | |
2681 | count = (ssize_t)write(fp->fd, buf, (unsigned)bytes); | |
2682 | #else | |
ef416fc2 | 2683 | if (fp->mode == 's') |
2684 | count = send(fp->fd, buf, bytes, 0); | |
2685 | else | |
2686 | count = write(fp->fd, buf, bytes); | |
b86bc4cf | 2687 | #endif /* WIN32 */ |
ef416fc2 | 2688 | |
e07d4801 | 2689 | DEBUG_printf(("9cups_write: count=" CUPS_LLFMT, CUPS_LLCAST count)); |
634763e8 | 2690 | |
ef416fc2 | 2691 | if (count < 0) |
2692 | { | |
2693 | /* | |
2694 | * Writes can be interrupted by signals and unavailable resources... | |
2695 | */ | |
2696 | ||
2697 | if (errno == EAGAIN || errno == EINTR) | |
2698 | continue; | |
2699 | else | |
2700 | return (-1); | |
2701 | } | |
2702 | ||
2703 | /* | |
2704 | * Update the counts for the last write call... | |
2705 | */ | |
2706 | ||
2707 | bytes -= count; | |
2708 | total += count; | |
2709 | buf += count; | |
2710 | } | |
2711 | ||
2712 | /* | |
2713 | * Return the total number of bytes written... | |
2714 | */ | |
2715 | ||
b86bc4cf | 2716 | return ((ssize_t)total); |
ef416fc2 | 2717 | } |
2718 | ||
2719 | ||
2720 | /* | |
75bd9771 | 2721 | * End of "$Id: file.c 7672 2008-06-18 22:03:02Z mike $". |
ef416fc2 | 2722 | */ |