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Commit | Line | Data |
---|---|---|
ef416fc2 | 1 | /* |
da003234 | 2 | * File functions for CUPS. |
ef416fc2 | 3 | * |
da003234 MS |
4 | * Since stdio files max out at 256 files on many systems, we have to |
5 | * write similar functions without this limit. At the same time, using | |
6 | * our own file functions allows us to provide transparent support of | |
2a75f21b | 7 | * different line endings, gzip'd print files, PPD files, etc. |
ef416fc2 | 8 | * |
5a855d85 MS |
9 | * Copyright © 2007-2018 by Apple Inc. |
10 | * Copyright © 1997-2007 by Easy Software Products, all rights reserved. | |
ef416fc2 | 11 | * |
5a855d85 MS |
12 | * Licensed under Apache License v2.0. See the file "LICENSE" for more |
13 | * information. | |
ef416fc2 | 14 | */ |
15 | ||
16 | /* | |
17 | * Include necessary headers... | |
18 | */ | |
19 | ||
b9faaae1 | 20 | #include "file-private.h" |
c7017ecc MS |
21 | #include <sys/stat.h> |
22 | #include <sys/types.h> | |
ef416fc2 | 23 | |
5a855d85 MS |
24 | # ifdef HAVE_LIBZ |
25 | # include <zlib.h> | |
26 | # endif /* HAVE_LIBZ */ | |
27 | ||
28 | ||
29 | /* | |
30 | * Internal structures... | |
31 | */ | |
32 | ||
33 | struct _cups_file_s /**** CUPS file structure... ****/ | |
34 | ||
35 | { | |
36 | int fd; /* File descriptor */ | |
37 | char mode, /* Mode ('r' or 'w') */ | |
38 | compressed, /* Compression used? */ | |
39 | is_stdio, /* stdin/out/err? */ | |
40 | eof, /* End of file? */ | |
41 | buf[4096], /* Buffer */ | |
42 | *ptr, /* Pointer into buffer */ | |
43 | *end; /* End of buffer data */ | |
44 | off_t pos, /* Position in file */ | |
45 | bufpos; /* File position for start of buffer */ | |
46 | ||
47 | #ifdef HAVE_LIBZ | |
48 | z_stream stream; /* (De)compression stream */ | |
49 | Bytef cbuf[4096]; /* (De)compression buffer */ | |
50 | uLong crc; /* (De)compression CRC */ | |
51 | #endif /* HAVE_LIBZ */ | |
52 | ||
53 | char *printf_buffer; /* cupsFilePrintf buffer */ | |
54 | size_t printf_size; /* Size of cupsFilePrintf buffer */ | |
55 | }; | |
56 | ||
ef416fc2 | 57 | |
58 | /* | |
59 | * Local functions... | |
60 | */ | |
61 | ||
62 | #ifdef HAVE_LIBZ | |
63 | static ssize_t cups_compress(cups_file_t *fp, const char *buf, size_t bytes); | |
64 | #endif /* HAVE_LIBZ */ | |
65 | static ssize_t cups_fill(cups_file_t *fp); | |
c7017ecc | 66 | static int cups_open(const char *filename, int mode); |
ef416fc2 | 67 | static ssize_t cups_read(cups_file_t *fp, char *buf, size_t bytes); |
68 | static ssize_t cups_write(cups_file_t *fp, const char *buf, size_t bytes); | |
69 | ||
70 | ||
19dc16f7 | 71 | #ifndef _WIN32 |
22c9029b MS |
72 | /* |
73 | * '_cupsFileCheck()' - Check the permissions of the given filename. | |
74 | */ | |
75 | ||
76 | _cups_fc_result_t /* O - Check result */ | |
77 | _cupsFileCheck( | |
78 | const char *filename, /* I - Filename to check */ | |
79 | _cups_fc_filetype_t filetype, /* I - Type of file checks? */ | |
80 | int dorootchecks, /* I - Check for root permissions? */ | |
81 | _cups_fc_func_t cb, /* I - Callback function */ | |
82 | void *context) /* I - Context pointer for callback */ | |
f228370c | 83 | |
22c9029b MS |
84 | { |
85 | struct stat fileinfo; /* File information */ | |
86 | char message[1024], /* Message string */ | |
87 | temp[1024], /* Parent directory filename */ | |
88 | *ptr; /* Pointer into parent directory */ | |
89 | _cups_fc_result_t result; /* Check result */ | |
90 | ||
91 | ||
88f9aafc MS |
92 | /* |
93 | * Does the filename contain a relative path ("../")? | |
94 | */ | |
95 | ||
96 | if (strstr(filename, "../")) | |
97 | { | |
98 | /* | |
99 | * Yes, fail it! | |
100 | */ | |
101 | ||
102 | result = _CUPS_FILE_CHECK_RELATIVE_PATH; | |
103 | goto finishup; | |
104 | } | |
105 | ||
22c9029b MS |
106 | /* |
107 | * Does the program even exist and is it accessible? | |
108 | */ | |
109 | ||
110 | if (stat(filename, &fileinfo)) | |
111 | { | |
112 | /* | |
113 | * Nope... | |
114 | */ | |
115 | ||
116 | result = _CUPS_FILE_CHECK_MISSING; | |
117 | goto finishup; | |
118 | } | |
119 | ||
120 | /* | |
121 | * Check the execute bit... | |
122 | */ | |
123 | ||
124 | result = _CUPS_FILE_CHECK_OK; | |
125 | ||
126 | switch (filetype) | |
127 | { | |
128 | case _CUPS_FILE_CHECK_DIRECTORY : | |
129 | if (!S_ISDIR(fileinfo.st_mode)) | |
130 | result = _CUPS_FILE_CHECK_WRONG_TYPE; | |
131 | break; | |
132 | ||
133 | default : | |
134 | if (!S_ISREG(fileinfo.st_mode)) | |
135 | result = _CUPS_FILE_CHECK_WRONG_TYPE; | |
136 | break; | |
137 | } | |
138 | ||
139 | if (result) | |
140 | goto finishup; | |
141 | ||
142 | /* | |
143 | * Are we doing root checks? | |
144 | */ | |
145 | ||
146 | if (!dorootchecks) | |
147 | { | |
148 | /* | |
149 | * Nope, so anything (else) goes... | |
150 | */ | |
151 | ||
152 | goto finishup; | |
153 | } | |
154 | ||
155 | /* | |
156 | * Verify permission of the file itself: | |
157 | * | |
158 | * 1. Must be owned by root | |
85dda01c | 159 | * 2. Must not be writable by group |
22c9029b MS |
160 | * 3. Must not be setuid |
161 | * 4. Must not be writable by others | |
162 | */ | |
163 | ||
164 | if (fileinfo.st_uid || /* 1. Must be owned by root */ | |
85dda01c | 165 | (fileinfo.st_mode & S_IWGRP) || /* 2. Must not be writable by group */ |
22c9029b MS |
166 | (fileinfo.st_mode & S_ISUID) || /* 3. Must not be setuid */ |
167 | (fileinfo.st_mode & S_IWOTH)) /* 4. Must not be writable by others */ | |
168 | { | |
169 | result = _CUPS_FILE_CHECK_PERMISSIONS; | |
170 | goto finishup; | |
171 | } | |
172 | ||
173 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY || | |
174 | filetype == _CUPS_FILE_CHECK_FILE_ONLY) | |
175 | goto finishup; | |
176 | ||
177 | /* | |
178 | * Now check the containing directory... | |
179 | */ | |
180 | ||
181 | strlcpy(temp, filename, sizeof(temp)); | |
182 | if ((ptr = strrchr(temp, '/')) != NULL) | |
183 | { | |
184 | if (ptr == temp) | |
185 | ptr[1] = '\0'; | |
186 | else | |
187 | *ptr = '\0'; | |
188 | } | |
189 | ||
190 | if (stat(temp, &fileinfo)) | |
191 | { | |
192 | /* | |
193 | * Doesn't exist?!? | |
194 | */ | |
195 | ||
196 | result = _CUPS_FILE_CHECK_MISSING; | |
197 | filetype = _CUPS_FILE_CHECK_DIRECTORY; | |
198 | filename = temp; | |
199 | ||
200 | goto finishup; | |
201 | } | |
202 | ||
203 | if (fileinfo.st_uid || /* 1. Must be owned by root */ | |
85dda01c | 204 | (fileinfo.st_mode & S_IWGRP) || /* 2. Must not be writable by group */ |
22c9029b MS |
205 | (fileinfo.st_mode & S_ISUID) || /* 3. Must not be setuid */ |
206 | (fileinfo.st_mode & S_IWOTH)) /* 4. Must not be writable by others */ | |
207 | { | |
208 | result = _CUPS_FILE_CHECK_PERMISSIONS; | |
209 | filetype = _CUPS_FILE_CHECK_DIRECTORY; | |
210 | filename = temp; | |
211 | } | |
212 | ||
213 | /* | |
214 | * Common return point... | |
215 | */ | |
216 | ||
217 | finishup: | |
218 | ||
219 | if (cb) | |
220 | { | |
221 | cups_lang_t *lang = cupsLangDefault(); | |
222 | /* Localization information */ | |
223 | ||
224 | switch (result) | |
225 | { | |
226 | case _CUPS_FILE_CHECK_OK : | |
227 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
228 | snprintf(message, sizeof(message), | |
229 | _cupsLangString(lang, _("Directory \"%s\" permissions OK " | |
230 | "(0%o/uid=%d/gid=%d).")), | |
231 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
232 | (int)fileinfo.st_gid); | |
233 | else | |
234 | snprintf(message, sizeof(message), | |
235 | _cupsLangString(lang, _("File \"%s\" permissions OK " | |
236 | "(0%o/uid=%d/gid=%d).")), | |
237 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
238 | (int)fileinfo.st_gid); | |
239 | break; | |
240 | ||
241 | case _CUPS_FILE_CHECK_MISSING : | |
242 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
243 | snprintf(message, sizeof(message), | |
244 | _cupsLangString(lang, _("Directory \"%s\" not available: " | |
245 | "%s")), | |
246 | filename, strerror(errno)); | |
247 | else | |
248 | snprintf(message, sizeof(message), | |
249 | _cupsLangString(lang, _("File \"%s\" not available: %s")), | |
250 | filename, strerror(errno)); | |
251 | break; | |
252 | ||
253 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
254 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
255 | snprintf(message, sizeof(message), | |
256 | _cupsLangString(lang, _("Directory \"%s\" has insecure " | |
257 | "permissions " | |
258 | "(0%o/uid=%d/gid=%d).")), | |
259 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
260 | (int)fileinfo.st_gid); | |
261 | else | |
262 | snprintf(message, sizeof(message), | |
263 | _cupsLangString(lang, _("File \"%s\" has insecure " | |
264 | "permissions " | |
265 | "(0%o/uid=%d/gid=%d).")), | |
266 | filename, fileinfo.st_mode, (int)fileinfo.st_uid, | |
267 | (int)fileinfo.st_gid); | |
268 | break; | |
269 | ||
270 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
271 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
272 | snprintf(message, sizeof(message), | |
273 | _cupsLangString(lang, _("Directory \"%s\" is a file.")), | |
274 | filename); | |
275 | else | |
276 | snprintf(message, sizeof(message), | |
277 | _cupsLangString(lang, _("File \"%s\" is a directory.")), | |
278 | filename); | |
279 | break; | |
88f9aafc MS |
280 | |
281 | case _CUPS_FILE_CHECK_RELATIVE_PATH : | |
282 | if (filetype == _CUPS_FILE_CHECK_DIRECTORY) | |
283 | snprintf(message, sizeof(message), | |
284 | _cupsLangString(lang, _("Directory \"%s\" contains a " | |
285 | "relative path.")), filename); | |
286 | else | |
287 | snprintf(message, sizeof(message), | |
288 | _cupsLangString(lang, _("File \"%s\" contains a relative " | |
289 | "path.")), filename); | |
290 | break; | |
22c9029b MS |
291 | } |
292 | ||
293 | (*cb)(context, result, message); | |
294 | } | |
295 | ||
296 | return (result); | |
297 | } | |
298 | ||
299 | ||
300 | /* | |
301 | * '_cupsFileCheckFilter()' - Report file check results as CUPS filter messages. | |
302 | */ | |
303 | ||
304 | void | |
305 | _cupsFileCheckFilter( | |
306 | void *context, /* I - Context pointer (unused) */ | |
307 | _cups_fc_result_t result, /* I - Result code */ | |
308 | const char *message) /* I - Message text */ | |
309 | { | |
310 | const char *prefix; /* Messaging prefix */ | |
311 | ||
312 | ||
321d8d57 MS |
313 | (void)context; |
314 | ||
22c9029b MS |
315 | switch (result) |
316 | { | |
8d5b58f6 | 317 | default : |
22c9029b MS |
318 | case _CUPS_FILE_CHECK_OK : |
319 | prefix = "DEBUG2"; | |
320 | break; | |
321 | ||
322 | case _CUPS_FILE_CHECK_MISSING : | |
323 | case _CUPS_FILE_CHECK_WRONG_TYPE : | |
324 | prefix = "ERROR"; | |
325 | fputs("STATE: +cups-missing-filter-warning\n", stderr); | |
326 | break; | |
327 | ||
328 | case _CUPS_FILE_CHECK_PERMISSIONS : | |
88f9aafc | 329 | case _CUPS_FILE_CHECK_RELATIVE_PATH : |
22c9029b MS |
330 | prefix = "ERROR"; |
331 | fputs("STATE: +cups-insecure-filter-warning\n", stderr); | |
332 | break; | |
333 | } | |
334 | ||
335 | fprintf(stderr, "%s: %s\n", prefix, message); | |
336 | } | |
19dc16f7 | 337 | #endif /* !_WIN32 */ |
22c9029b MS |
338 | |
339 | ||
ef416fc2 | 340 | /* |
341 | * 'cupsFileClose()' - Close a CUPS file. | |
5a738aea | 342 | * |
8072030b | 343 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 344 | */ |
345 | ||
346 | int /* O - 0 on success, -1 on error */ | |
347 | cupsFileClose(cups_file_t *fp) /* I - CUPS file */ | |
348 | { | |
349 | int fd; /* File descriptor */ | |
350 | char mode; /* Open mode */ | |
351 | int status; /* Return status */ | |
352 | ||
353 | ||
807315e6 | 354 | DEBUG_printf(("cupsFileClose(fp=%p)", (void *)fp)); |
ef416fc2 | 355 | |
356 | /* | |
357 | * Range check... | |
358 | */ | |
359 | ||
360 | if (!fp) | |
361 | return (-1); | |
362 | ||
363 | /* | |
364 | * Flush pending write data... | |
365 | */ | |
366 | ||
367 | if (fp->mode == 'w') | |
368 | status = cupsFileFlush(fp); | |
369 | else | |
370 | status = 0; | |
371 | ||
372 | #ifdef HAVE_LIBZ | |
373 | if (fp->compressed && status >= 0) | |
374 | { | |
375 | if (fp->mode == 'r') | |
376 | { | |
377 | /* | |
378 | * Free decompression data... | |
379 | */ | |
380 | ||
381 | inflateEnd(&fp->stream); | |
382 | } | |
383 | else | |
384 | { | |
385 | /* | |
386 | * Flush any remaining compressed data... | |
387 | */ | |
388 | ||
389 | unsigned char trailer[8]; /* Trailer CRC and length */ | |
390 | int done; /* Done writing... */ | |
391 | ||
392 | ||
393 | fp->stream.avail_in = 0; | |
394 | ||
395 | for (done = 0;;) | |
396 | { | |
397 | if (fp->stream.next_out > fp->cbuf) | |
398 | { | |
399 | if (cups_write(fp, (char *)fp->cbuf, | |
7e86f2f6 | 400 | (size_t)(fp->stream.next_out - fp->cbuf)) < 0) |
ef416fc2 | 401 | status = -1; |
402 | ||
403 | fp->stream.next_out = fp->cbuf; | |
404 | fp->stream.avail_out = sizeof(fp->cbuf); | |
405 | } | |
406 | ||
407 | if (done || status < 0) | |
408 | break; | |
409 | ||
410 | done = deflate(&fp->stream, Z_FINISH) == Z_STREAM_END && | |
411 | fp->stream.next_out == fp->cbuf; | |
412 | } | |
413 | ||
414 | /* | |
415 | * Write the CRC and length... | |
416 | */ | |
417 | ||
7e86f2f6 MS |
418 | trailer[0] = (unsigned char)fp->crc; |
419 | trailer[1] = (unsigned char)(fp->crc >> 8); | |
420 | trailer[2] = (unsigned char)(fp->crc >> 16); | |
421 | trailer[3] = (unsigned char)(fp->crc >> 24); | |
422 | trailer[4] = (unsigned char)fp->pos; | |
423 | trailer[5] = (unsigned char)(fp->pos >> 8); | |
424 | trailer[6] = (unsigned char)(fp->pos >> 16); | |
425 | trailer[7] = (unsigned char)(fp->pos >> 24); | |
ef416fc2 | 426 | |
427 | if (cups_write(fp, (char *)trailer, 8) < 0) | |
428 | status = -1; | |
429 | ||
430 | /* | |
431 | * Free all memory used by the compression stream... | |
432 | */ | |
433 | ||
434 | deflateEnd(&(fp->stream)); | |
435 | } | |
436 | } | |
437 | #endif /* HAVE_LIBZ */ | |
438 | ||
439 | /* | |
2a75f21b MS |
440 | * If this is one of the cupsFileStdin/out/err files, return now and don't |
441 | * actually free memory or close (these last the life of the process...) | |
442 | */ | |
443 | ||
444 | if (fp->is_stdio) | |
445 | return (status); | |
446 | ||
447 | /* | |
ef416fc2 | 448 | * Save the file descriptor we used and free memory... |
449 | */ | |
450 | ||
2a75f21b MS |
451 | fd = fp->fd; |
452 | mode = fp->mode; | |
ef416fc2 | 453 | |
75bd9771 MS |
454 | if (fp->printf_buffer) |
455 | free(fp->printf_buffer); | |
456 | ||
ef416fc2 | 457 | free(fp); |
458 | ||
459 | /* | |
460 | * Close the file, returning the close status... | |
461 | */ | |
462 | ||
463 | if (mode == 's') | |
464 | { | |
87e98392 | 465 | if (httpAddrClose(NULL, fd) < 0) |
ef416fc2 | 466 | status = -1; |
467 | } | |
2a75f21b MS |
468 | else if (close(fd) < 0) |
469 | status = -1; | |
ef416fc2 | 470 | |
471 | return (status); | |
472 | } | |
473 | ||
474 | ||
475 | /* | |
476 | * 'cupsFileCompression()' - Return whether a file is compressed. | |
5a738aea | 477 | * |
8072030b | 478 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 479 | */ |
480 | ||
5a738aea | 481 | int /* O - @code CUPS_FILE_NONE@ or @code CUPS_FILE_GZIP@ */ |
ef416fc2 | 482 | cupsFileCompression(cups_file_t *fp) /* I - CUPS file */ |
483 | { | |
80ca4592 | 484 | return (fp ? fp->compressed : CUPS_FILE_NONE); |
ef416fc2 | 485 | } |
486 | ||
487 | ||
488 | /* | |
489 | * 'cupsFileEOF()' - Return the end-of-file status. | |
5a738aea | 490 | * |
8072030b | 491 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 492 | */ |
493 | ||
5a738aea | 494 | int /* O - 1 on end of file, 0 otherwise */ |
ef416fc2 | 495 | cupsFileEOF(cups_file_t *fp) /* I - CUPS file */ |
496 | { | |
80ca4592 | 497 | return (fp ? fp->eof : 1); |
ef416fc2 | 498 | } |
499 | ||
500 | ||
fa73b229 | 501 | /* |
502 | * 'cupsFileFind()' - Find a file using the specified path. | |
503 | * | |
504 | * This function allows the paths in the path string to be separated by | |
505 | * colons (UNIX standard) or semicolons (Windows standard) and stores the | |
506 | * result in the buffer supplied. If the file cannot be found in any of | |
5a738aea MS |
507 | * the supplied paths, @code NULL@ is returned. A @code NULL@ path only |
508 | * matches the current directory. | |
509 | * | |
8072030b | 510 | * @since CUPS 1.2/macOS 10.5@ |
fa73b229 | 511 | */ |
512 | ||
5a738aea | 513 | const char * /* O - Full path to file or @code NULL@ if not found */ |
fa73b229 | 514 | cupsFileFind(const char *filename, /* I - File to find */ |
515 | const char *path, /* I - Colon/semicolon-separated path */ | |
4400e98d | 516 | int executable, /* I - 1 = executable files, 0 = any file/dir */ |
517 | char *buffer, /* I - Filename buffer */ | |
fa73b229 | 518 | int bufsize) /* I - Size of filename buffer */ |
519 | { | |
520 | char *bufptr, /* Current position in buffer */ | |
521 | *bufend; /* End of buffer */ | |
522 | ||
523 | ||
524 | /* | |
525 | * Range check input... | |
526 | */ | |
527 | ||
807315e6 | 528 | DEBUG_printf(("cupsFileFind(filename=\"%s\", path=\"%s\", executable=%d, buffer=%p, bufsize=%d)", filename, path, executable, (void *)buffer, bufsize)); |
e07d4801 | 529 | |
fa73b229 | 530 | if (!filename || !buffer || bufsize < 2) |
531 | return (NULL); | |
532 | ||
533 | if (!path) | |
534 | { | |
535 | /* | |
536 | * No path, so check current directory... | |
537 | */ | |
538 | ||
539 | if (!access(filename, 0)) | |
540 | { | |
07623986 | 541 | strlcpy(buffer, filename, (size_t)bufsize); |
fa73b229 | 542 | return (buffer); |
543 | } | |
544 | else | |
545 | return (NULL); | |
546 | } | |
547 | ||
548 | /* | |
549 | * Now check each path and return the first match... | |
550 | */ | |
551 | ||
552 | bufend = buffer + bufsize - 1; | |
553 | bufptr = buffer; | |
554 | ||
555 | while (*path) | |
556 | { | |
19dc16f7 | 557 | #ifdef _WIN32 |
b86bc4cf | 558 | if (*path == ';' || (*path == ':' && ((bufptr - buffer) > 1 || !isalpha(buffer[0] & 255)))) |
559 | #else | |
fa73b229 | 560 | if (*path == ';' || *path == ':') |
19dc16f7 | 561 | #endif /* _WIN32 */ |
fa73b229 | 562 | { |
563 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
564 | *bufptr++ = '/'; | |
565 | ||
07623986 | 566 | strlcpy(bufptr, filename, (size_t)(bufend - bufptr)); |
fa73b229 | 567 | |
19dc16f7 | 568 | #ifdef _WIN32 |
fa73b229 | 569 | if (!access(buffer, 0)) |
4400e98d | 570 | #else |
571 | if (!access(buffer, executable ? X_OK : 0)) | |
19dc16f7 | 572 | #endif /* _WIN32 */ |
b86bc4cf | 573 | { |
e07d4801 | 574 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 575 | return (buffer); |
b86bc4cf | 576 | } |
fa73b229 | 577 | |
578 | bufptr = buffer; | |
579 | } | |
580 | else if (bufptr < bufend) | |
581 | *bufptr++ = *path; | |
582 | ||
583 | path ++; | |
584 | } | |
585 | ||
586 | /* | |
587 | * Check the last path... | |
588 | */ | |
589 | ||
590 | if (bufptr > buffer && bufptr[-1] != '/' && bufptr < bufend) | |
591 | *bufptr++ = '/'; | |
592 | ||
07623986 | 593 | strlcpy(bufptr, filename, (size_t)(bufend - bufptr)); |
fa73b229 | 594 | |
595 | if (!access(buffer, 0)) | |
b86bc4cf | 596 | { |
e07d4801 | 597 | DEBUG_printf(("1cupsFileFind: Returning \"%s\"", buffer)); |
fa73b229 | 598 | return (buffer); |
b86bc4cf | 599 | } |
fa73b229 | 600 | else |
b86bc4cf | 601 | { |
e07d4801 | 602 | DEBUG_puts("1cupsFileFind: Returning NULL"); |
fa73b229 | 603 | return (NULL); |
b86bc4cf | 604 | } |
fa73b229 | 605 | } |
606 | ||
607 | ||
ef416fc2 | 608 | /* |
609 | * 'cupsFileFlush()' - Flush pending output. | |
5a738aea | 610 | * |
8072030b | 611 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 612 | */ |
613 | ||
614 | int /* O - 0 on success, -1 on error */ | |
615 | cupsFileFlush(cups_file_t *fp) /* I - CUPS file */ | |
616 | { | |
2abf387c | 617 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 618 | |
619 | ||
807315e6 | 620 | DEBUG_printf(("cupsFileFlush(fp=%p)", (void *)fp)); |
ef416fc2 | 621 | |
622 | /* | |
623 | * Range check input... | |
624 | */ | |
625 | ||
626 | if (!fp || fp->mode != 'w') | |
627 | { | |
e07d4801 | 628 | DEBUG_puts("1cupsFileFlush: Attempt to flush a read-only file..."); |
ef416fc2 | 629 | return (-1); |
630 | } | |
631 | ||
b86bc4cf | 632 | bytes = (ssize_t)(fp->ptr - fp->buf); |
ef416fc2 | 633 | |
e07d4801 | 634 | DEBUG_printf(("2cupsFileFlush: Flushing " CUPS_LLFMT " bytes...", |
634763e8 | 635 | CUPS_LLCAST bytes)); |
ecdc0628 | 636 | |
ef416fc2 | 637 | if (bytes > 0) |
638 | { | |
639 | #ifdef HAVE_LIBZ | |
640 | if (fp->compressed) | |
7e86f2f6 | 641 | bytes = cups_compress(fp, fp->buf, (size_t)bytes); |
ef416fc2 | 642 | else |
643 | #endif /* HAVE_LIBZ */ | |
7e86f2f6 | 644 | bytes = cups_write(fp, fp->buf, (size_t)bytes); |
ef416fc2 | 645 | |
646 | if (bytes < 0) | |
647 | return (-1); | |
648 | ||
649 | fp->ptr = fp->buf; | |
650 | } | |
f14324a7 | 651 | |
ef416fc2 | 652 | return (0); |
653 | } | |
654 | ||
655 | ||
656 | /* | |
657 | * 'cupsFileGetChar()' - Get a single character from a file. | |
5a738aea | 658 | * |
8072030b | 659 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 660 | */ |
661 | ||
5a738aea | 662 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 663 | cupsFileGetChar(cups_file_t *fp) /* I - CUPS file */ |
664 | { | |
665 | /* | |
666 | * Range check input... | |
667 | */ | |
668 | ||
807315e6 | 669 | DEBUG_printf(("4cupsFileGetChar(fp=%p)", (void *)fp)); |
cbf9404a | 670 | |
ef416fc2 | 671 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) |
b86bc4cf | 672 | { |
f14324a7 | 673 | DEBUG_puts("5cupsFileGetChar: Bad arguments!"); |
ef416fc2 | 674 | return (-1); |
b86bc4cf | 675 | } |
ef416fc2 | 676 | |
677 | /* | |
678 | * If the input buffer is empty, try to read more data... | |
679 | */ | |
680 | ||
807315e6 | 681 | DEBUG_printf(("5cupsFileGetChar: fp->eof=%d, fp->ptr=%p, fp->end=%p", fp->eof, (void *)fp->ptr, (void *)fp->end)); |
cbf9404a | 682 | |
ef416fc2 | 683 | if (fp->ptr >= fp->end) |
cbf9404a | 684 | if (cups_fill(fp) <= 0) |
b86bc4cf | 685 | { |
f14324a7 | 686 | DEBUG_puts("5cupsFileGetChar: Unable to fill buffer!"); |
ef416fc2 | 687 | return (-1); |
b86bc4cf | 688 | } |
ef416fc2 | 689 | |
690 | /* | |
691 | * Return the next character in the buffer... | |
692 | */ | |
693 | ||
f14324a7 | 694 | DEBUG_printf(("5cupsFileGetChar: Returning %d...", *(fp->ptr) & 255)); |
b86bc4cf | 695 | |
634763e8 MS |
696 | fp->pos ++; |
697 | ||
f14324a7 | 698 | DEBUG_printf(("6cupsFileGetChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 699 | |
ef416fc2 | 700 | return (*(fp->ptr)++ & 255); |
701 | } | |
702 | ||
703 | ||
704 | /* | |
22c9029b | 705 | * 'cupsFileGetConf()' - Get a line from a configuration file. |
5a738aea | 706 | * |
8072030b | 707 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 708 | */ |
709 | ||
5a738aea | 710 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 711 | cupsFileGetConf(cups_file_t *fp, /* I - CUPS file */ |
712 | char *buf, /* O - String buffer */ | |
713 | size_t buflen, /* I - Size of string buffer */ | |
714 | char **value, /* O - Pointer to value */ | |
715 | int *linenum) /* IO - Current line number */ | |
716 | { | |
717 | char *ptr; /* Pointer into line */ | |
718 | ||
719 | ||
720 | /* | |
721 | * Range check input... | |
722 | */ | |
723 | ||
e07d4801 | 724 | DEBUG_printf(("2cupsFileGetConf(fp=%p, buf=%p, buflen=" CUPS_LLFMT |
807315e6 | 725 | ", value=%p, linenum=%p)", (void *)fp, (void *)buf, CUPS_LLCAST buflen, (void *)value, (void *)linenum)); |
634763e8 | 726 | |
ef416fc2 | 727 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || |
728 | !buf || buflen < 2 || !value) | |
729 | { | |
730 | if (value) | |
731 | *value = NULL; | |
732 | ||
733 | return (NULL); | |
734 | } | |
735 | ||
736 | /* | |
737 | * Read the next non-comment line... | |
738 | */ | |
739 | ||
740 | *value = NULL; | |
f7deaa1a | 741 | |
ef416fc2 | 742 | while (cupsFileGets(fp, buf, buflen)) |
743 | { | |
744 | (*linenum) ++; | |
745 | ||
746 | /* | |
747 | * Strip any comments... | |
748 | */ | |
749 | ||
750 | if ((ptr = strchr(buf, '#')) != NULL) | |
751 | { | |
f7deaa1a | 752 | if (ptr > buf && ptr[-1] == '\\') |
ef416fc2 | 753 | { |
f7deaa1a | 754 | // Unquote the #... |
755 | _cups_strcpy(ptr - 1, ptr); | |
ef416fc2 | 756 | } |
f7deaa1a | 757 | else |
758 | { | |
759 | // Strip the comment and any trailing whitespace... | |
760 | while (ptr > buf) | |
761 | { | |
7cf5915e | 762 | if (!_cups_isspace(ptr[-1])) |
f7deaa1a | 763 | break; |
764 | ||
765 | ptr --; | |
766 | } | |
ef416fc2 | 767 | |
f7deaa1a | 768 | *ptr = '\0'; |
769 | } | |
ef416fc2 | 770 | } |
771 | ||
772 | /* | |
773 | * Strip leading whitespace... | |
774 | */ | |
775 | ||
7cf5915e | 776 | for (ptr = buf; _cups_isspace(*ptr); ptr ++); |
ef416fc2 | 777 | |
778 | if (ptr > buf) | |
779 | _cups_strcpy(buf, ptr); | |
780 | ||
781 | /* | |
782 | * See if there is anything left... | |
783 | */ | |
784 | ||
785 | if (buf[0]) | |
786 | { | |
787 | /* | |
788 | * Yes, grab any value and return... | |
789 | */ | |
790 | ||
791 | for (ptr = buf; *ptr; ptr ++) | |
7cf5915e | 792 | if (_cups_isspace(*ptr)) |
ef416fc2 | 793 | break; |
794 | ||
795 | if (*ptr) | |
796 | { | |
797 | /* | |
798 | * Have a value, skip any other spaces... | |
799 | */ | |
800 | ||
7cf5915e | 801 | while (_cups_isspace(*ptr)) |
ef416fc2 | 802 | *ptr++ = '\0'; |
803 | ||
804 | if (*ptr) | |
805 | *value = ptr; | |
806 | ||
807 | /* | |
808 | * Strip trailing whitespace and > for lines that begin with <... | |
809 | */ | |
810 | ||
811 | ptr += strlen(ptr) - 1; | |
812 | ||
813 | if (buf[0] == '<' && *ptr == '>') | |
814 | *ptr-- = '\0'; | |
815 | else if (buf[0] == '<' && *ptr != '>') | |
816 | { | |
817 | /* | |
818 | * Syntax error... | |
819 | */ | |
820 | ||
821 | *value = NULL; | |
822 | return (buf); | |
823 | } | |
824 | ||
7cf5915e | 825 | while (ptr > *value && _cups_isspace(*ptr)) |
ef416fc2 | 826 | *ptr-- = '\0'; |
827 | } | |
828 | ||
829 | /* | |
830 | * Return the line... | |
831 | */ | |
832 | ||
833 | return (buf); | |
834 | } | |
835 | } | |
836 | ||
837 | return (NULL); | |
838 | } | |
839 | ||
840 | ||
80ca4592 | 841 | /* |
842 | * 'cupsFileGetLine()' - Get a CR and/or LF-terminated line that may | |
843 | * contain binary data. | |
844 | * | |
5a738aea MS |
845 | * This function differs from @link cupsFileGets@ in that the trailing CR |
846 | * and LF are preserved, as is any binary data on the line. The buffer is | |
847 | * nul-terminated, however you should use the returned length to determine | |
80ca4592 | 848 | * the number of bytes on the line. |
5a738aea | 849 | * |
8072030b | 850 | * @since CUPS 1.2/macOS 10.5@ |
80ca4592 | 851 | */ |
852 | ||
5a738aea | 853 | size_t /* O - Number of bytes on line or 0 on end of file */ |
80ca4592 | 854 | cupsFileGetLine(cups_file_t *fp, /* I - File to read from */ |
855 | char *buf, /* I - Buffer */ | |
856 | size_t buflen) /* I - Size of buffer */ | |
857 | { | |
858 | int ch; /* Character from file */ | |
859 | char *ptr, /* Current position in line buffer */ | |
860 | *end; /* End of line buffer */ | |
861 | ||
862 | ||
863 | /* | |
864 | * Range check input... | |
865 | */ | |
866 | ||
807315e6 | 867 | DEBUG_printf(("2cupsFileGetLine(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST buflen)); |
634763e8 | 868 | |
80ca4592 | 869 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 3) |
870 | return (0); | |
871 | ||
872 | /* | |
873 | * Now loop until we have a valid line... | |
874 | */ | |
875 | ||
876 | for (ptr = buf, end = buf + buflen - 2; ptr < end ;) | |
877 | { | |
878 | if (fp->ptr >= fp->end) | |
879 | if (cups_fill(fp) <= 0) | |
880 | break; | |
881 | ||
882 | *ptr++ = ch = *(fp->ptr)++; | |
634763e8 | 883 | fp->pos ++; |
80ca4592 | 884 | |
885 | if (ch == '\r') | |
886 | { | |
887 | /* | |
888 | * Check for CR LF... | |
889 | */ | |
890 | ||
891 | if (fp->ptr >= fp->end) | |
892 | if (cups_fill(fp) <= 0) | |
893 | break; | |
894 | ||
895 | if (*(fp->ptr) == '\n') | |
634763e8 | 896 | { |
80ca4592 | 897 | *ptr++ = *(fp->ptr)++; |
634763e8 MS |
898 | fp->pos ++; |
899 | } | |
80ca4592 | 900 | |
901 | break; | |
902 | } | |
903 | else if (ch == '\n') | |
904 | { | |
905 | /* | |
906 | * Line feed ends a line... | |
907 | */ | |
908 | ||
909 | break; | |
910 | } | |
911 | } | |
912 | ||
913 | *ptr = '\0'; | |
914 | ||
e07d4801 | 915 | DEBUG_printf(("4cupsFileGetLine: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 916 | |
7e86f2f6 | 917 | return ((size_t)(ptr - buf)); |
80ca4592 | 918 | } |
919 | ||
920 | ||
ef416fc2 | 921 | /* |
922 | * 'cupsFileGets()' - Get a CR and/or LF-terminated line. | |
5a738aea | 923 | * |
8072030b | 924 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 925 | */ |
926 | ||
5a738aea | 927 | char * /* O - Line read or @code NULL@ on end of file or error */ |
ef416fc2 | 928 | cupsFileGets(cups_file_t *fp, /* I - CUPS file */ |
929 | char *buf, /* O - String buffer */ | |
930 | size_t buflen) /* I - Size of string buffer */ | |
931 | { | |
932 | int ch; /* Character from file */ | |
933 | char *ptr, /* Current position in line buffer */ | |
934 | *end; /* End of line buffer */ | |
935 | ||
936 | ||
937 | /* | |
938 | * Range check input... | |
939 | */ | |
940 | ||
807315e6 | 941 | DEBUG_printf(("2cupsFileGets(fp=%p, buf=%p, buflen=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST buflen)); |
634763e8 | 942 | |
ef416fc2 | 943 | if (!fp || (fp->mode != 'r' && fp->mode != 's') || !buf || buflen < 2) |
944 | return (NULL); | |
945 | ||
946 | /* | |
947 | * Now loop until we have a valid line... | |
948 | */ | |
949 | ||
950 | for (ptr = buf, end = buf + buflen - 1; ptr < end ;) | |
951 | { | |
952 | if (fp->ptr >= fp->end) | |
953 | if (cups_fill(fp) <= 0) | |
954 | { | |
955 | if (ptr == buf) | |
956 | return (NULL); | |
957 | else | |
958 | break; | |
959 | } | |
960 | ||
961 | ch = *(fp->ptr)++; | |
634763e8 | 962 | fp->pos ++; |
ef416fc2 | 963 | |
964 | if (ch == '\r') | |
965 | { | |
966 | /* | |
967 | * Check for CR LF... | |
968 | */ | |
969 | ||
970 | if (fp->ptr >= fp->end) | |
971 | if (cups_fill(fp) <= 0) | |
972 | break; | |
973 | ||
974 | if (*(fp->ptr) == '\n') | |
634763e8 MS |
975 | { |
976 | fp->ptr ++; | |
977 | fp->pos ++; | |
978 | } | |
ef416fc2 | 979 | |
980 | break; | |
981 | } | |
982 | else if (ch == '\n') | |
983 | { | |
984 | /* | |
985 | * Line feed ends a line... | |
986 | */ | |
987 | ||
988 | break; | |
989 | } | |
990 | else | |
7e86f2f6 | 991 | *ptr++ = (char)ch; |
ef416fc2 | 992 | } |
993 | ||
994 | *ptr = '\0'; | |
995 | ||
e07d4801 | 996 | DEBUG_printf(("4cupsFileGets: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 997 | |
ef416fc2 | 998 | return (buf); |
999 | } | |
1000 | ||
1001 | ||
1002 | /* | |
1003 | * 'cupsFileLock()' - Temporarily lock access to a file. | |
5a738aea | 1004 | * |
8072030b | 1005 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 1006 | */ |
1007 | ||
1008 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 1009 | cupsFileLock(cups_file_t *fp, /* I - CUPS file */ |
ef416fc2 | 1010 | int block) /* I - 1 to wait for the lock, 0 to fail right away */ |
1011 | { | |
1012 | /* | |
1013 | * Range check... | |
1014 | */ | |
1015 | ||
1016 | if (!fp || fp->mode == 's') | |
1017 | return (-1); | |
1018 | ||
1019 | /* | |
1020 | * Try the lock... | |
1021 | */ | |
1022 | ||
19dc16f7 | 1023 | #ifdef _WIN32 |
536bc2c6 | 1024 | return (_locking(fp->fd, block ? _LK_LOCK : _LK_NBLCK, 0)); |
ef416fc2 | 1025 | #else |
1026 | return (lockf(fp->fd, block ? F_LOCK : F_TLOCK, 0)); | |
19dc16f7 | 1027 | #endif /* _WIN32 */ |
ef416fc2 | 1028 | } |
1029 | ||
1030 | ||
1031 | /* | |
1032 | * 'cupsFileNumber()' - Return the file descriptor associated with a CUPS file. | |
5a738aea | 1033 | * |
8072030b | 1034 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 1035 | */ |
1036 | ||
1037 | int /* O - File descriptor */ | |
1038 | cupsFileNumber(cups_file_t *fp) /* I - CUPS file */ | |
1039 | { | |
5a738aea MS |
1040 | if (fp) |
1041 | return (fp->fd); | |
1042 | else | |
1043 | return (-1); | |
ef416fc2 | 1044 | } |
1045 | ||
1046 | ||
1047 | /* | |
1048 | * 'cupsFileOpen()' - Open a CUPS file. | |
5a738aea MS |
1049 | * |
1050 | * The "mode" parameter can be "r" to read, "w" to write, overwriting any | |
1051 | * existing file, "a" to append to an existing file or create a new file, | |
1052 | * or "s" to open a socket connection. | |
1053 | * | |
634763e8 MS |
1054 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1055 | * supplied which enables Flate compression of the file. Compression is | |
1056 | * not supported for the "a" (append) mode. | |
5a738aea MS |
1057 | * |
1058 | * When opening a socket connection, the filename is a string of the form | |
1059 | * "address:port" or "hostname:port". The socket will make an IPv4 or IPv6 | |
1060 | * connection as needed, generally preferring IPv6 connections when there is | |
1061 | * a choice. | |
1062 | * | |
8072030b | 1063 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 1064 | */ |
1065 | ||
5a738aea | 1066 | cups_file_t * /* O - CUPS file or @code NULL@ if the file or socket cannot be opened */ |
ef416fc2 | 1067 | cupsFileOpen(const char *filename, /* I - Name of file */ |
1068 | const char *mode) /* I - Open mode */ | |
1069 | { | |
1070 | cups_file_t *fp; /* New CUPS file */ | |
1071 | int fd; /* File descriptor */ | |
1072 | char hostname[1024], /* Hostname */ | |
1073 | *portname; /* Port "name" (number or service) */ | |
1074 | http_addrlist_t *addrlist; /* Host address list */ | |
1075 | ||
1076 | ||
e07d4801 | 1077 | DEBUG_printf(("cupsFileOpen(filename=\"%s\", mode=\"%s\")", filename, |
b423cd4c | 1078 | mode)); |
1079 | ||
ef416fc2 | 1080 | /* |
1081 | * Range check input... | |
1082 | */ | |
1083 | ||
1084 | if (!filename || !mode || | |
634763e8 MS |
1085 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1086 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1087 | return (NULL); |
1088 | ||
1089 | /* | |
1090 | * Open the file... | |
1091 | */ | |
1092 | ||
1093 | switch (*mode) | |
1094 | { | |
1095 | case 'a' : /* Append file */ | |
c7017ecc MS |
1096 | fd = cups_open(filename, |
1097 | O_RDWR | O_CREAT | O_APPEND | O_LARGEFILE | O_BINARY); | |
ef416fc2 | 1098 | break; |
1099 | ||
1100 | case 'r' : /* Read file */ | |
b86bc4cf | 1101 | fd = open(filename, O_RDONLY | O_LARGEFILE | O_BINARY, 0); |
ef416fc2 | 1102 | break; |
1103 | ||
1104 | case 'w' : /* Write file */ | |
c7017ecc MS |
1105 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); |
1106 | if (fd < 0 && errno == ENOENT) | |
1107 | { | |
1108 | fd = cups_open(filename, | |
1109 | O_WRONLY | O_CREAT | O_EXCL | O_LARGEFILE | O_BINARY); | |
1110 | if (fd < 0 && errno == EEXIST) | |
1111 | fd = cups_open(filename, O_WRONLY | O_LARGEFILE | O_BINARY); | |
1112 | } | |
1113 | ||
1114 | if (fd >= 0) | |
19dc16f7 | 1115 | #ifdef _WIN32 |
c7017ecc MS |
1116 | _chsize(fd, 0); |
1117 | #else | |
1118 | ftruncate(fd, 0); | |
19dc16f7 | 1119 | #endif /* _WIN32 */ |
ef416fc2 | 1120 | break; |
1121 | ||
1122 | case 's' : /* Read/write socket */ | |
1123 | strlcpy(hostname, filename, sizeof(hostname)); | |
1124 | if ((portname = strrchr(hostname, ':')) != NULL) | |
1125 | *portname++ = '\0'; | |
1126 | else | |
1127 | return (NULL); | |
1128 | ||
1129 | /* | |
1130 | * Lookup the hostname and service... | |
1131 | */ | |
1132 | ||
1133 | if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL) | |
1134 | return (NULL); | |
1135 | ||
1136 | /* | |
1137 | * Connect to the server... | |
1138 | */ | |
1139 | ||
1140 | if (!httpAddrConnect(addrlist, &fd)) | |
1141 | { | |
1142 | httpAddrFreeList(addrlist); | |
1143 | return (NULL); | |
1144 | } | |
1145 | ||
1146 | httpAddrFreeList(addrlist); | |
1147 | break; | |
1148 | ||
1149 | default : /* Remove bogus compiler warning... */ | |
1150 | return (NULL); | |
1151 | } | |
1152 | ||
1153 | if (fd < 0) | |
1154 | return (NULL); | |
1155 | ||
1156 | /* | |
1157 | * Create the CUPS file structure... | |
1158 | */ | |
1159 | ||
1160 | if ((fp = cupsFileOpenFd(fd, mode)) == NULL) | |
1161 | { | |
1162 | if (*mode == 's') | |
87e98392 | 1163 | httpAddrClose(NULL, fd); |
ef416fc2 | 1164 | else |
1165 | close(fd); | |
1166 | } | |
1167 | ||
1168 | /* | |
1169 | * Return it... | |
1170 | */ | |
1171 | ||
1172 | return (fp); | |
1173 | } | |
1174 | ||
1175 | /* | |
1176 | * 'cupsFileOpenFd()' - Open a CUPS file using a file descriptor. | |
5a738aea | 1177 | * |
634763e8 MS |
1178 | * The "mode" parameter can be "r" to read, "w" to write, "a" to append, |
1179 | * or "s" to treat the file descriptor as a bidirectional socket connection. | |
5a738aea | 1180 | * |
634763e8 MS |
1181 | * When opening for writing ("w"), an optional number from 1 to 9 can be |
1182 | * supplied which enables Flate compression of the file. Compression is | |
1183 | * not supported for the "a" (append) mode. | |
5a738aea | 1184 | * |
8072030b | 1185 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 1186 | */ |
1187 | ||
5a738aea | 1188 | cups_file_t * /* O - CUPS file or @code NULL@ if the file could not be opened */ |
ef416fc2 | 1189 | cupsFileOpenFd(int fd, /* I - File descriptor */ |
1190 | const char *mode) /* I - Open mode */ | |
1191 | { | |
1192 | cups_file_t *fp; /* New CUPS file */ | |
1193 | ||
1194 | ||
e07d4801 | 1195 | DEBUG_printf(("cupsFileOpenFd(fd=%d, mode=\"%s\")", fd, mode)); |
b423cd4c | 1196 | |
ef416fc2 | 1197 | /* |
1198 | * Range check input... | |
1199 | */ | |
1200 | ||
1201 | if (fd < 0 || !mode || | |
634763e8 MS |
1202 | (*mode != 'r' && *mode != 'w' && *mode != 'a' && *mode != 's') || |
1203 | (*mode == 'a' && isdigit(mode[1] & 255))) | |
ef416fc2 | 1204 | return (NULL); |
1205 | ||
1206 | /* | |
1207 | * Allocate memory... | |
1208 | */ | |
1209 | ||
1210 | if ((fp = calloc(1, sizeof(cups_file_t))) == NULL) | |
1211 | return (NULL); | |
1212 | ||
1213 | /* | |
1214 | * Open the file... | |
1215 | */ | |
1216 | ||
1217 | fp->fd = fd; | |
1218 | ||
1219 | switch (*mode) | |
1220 | { | |
ef416fc2 | 1221 | case 'a' : |
634763e8 MS |
1222 | fp->pos = lseek(fd, 0, SEEK_END); |
1223 | ||
1224 | case 'w' : | |
ef416fc2 | 1225 | fp->mode = 'w'; |
1226 | fp->ptr = fp->buf; | |
1227 | fp->end = fp->buf + sizeof(fp->buf); | |
1228 | ||
1229 | #ifdef HAVE_LIBZ | |
1230 | if (mode[1] >= '1' && mode[1] <= '9') | |
1231 | { | |
1232 | /* | |
1233 | * Open a compressed stream, so write the standard gzip file | |
1234 | * header... | |
1235 | */ | |
1236 | ||
1237 | unsigned char header[10]; /* gzip file header */ | |
1238 | time_t curtime; /* Current time */ | |
1239 | ||
1240 | ||
1241 | curtime = time(NULL); | |
1242 | header[0] = 0x1f; | |
1243 | header[1] = 0x8b; | |
1244 | header[2] = Z_DEFLATED; | |
1245 | header[3] = 0; | |
7e86f2f6 MS |
1246 | header[4] = (unsigned char)curtime; |
1247 | header[5] = (unsigned char)(curtime >> 8); | |
1248 | header[6] = (unsigned char)(curtime >> 16); | |
1249 | header[7] = (unsigned char)(curtime >> 24); | |
ef416fc2 | 1250 | header[8] = 0; |
1251 | header[9] = 0x03; | |
1252 | ||
1253 | cups_write(fp, (char *)header, 10); | |
1254 | ||
1255 | /* | |
1256 | * Initialize the compressor... | |
1257 | */ | |
1258 | ||
1259 | deflateInit2(&(fp->stream), mode[1] - '0', Z_DEFLATED, -15, 8, | |
1260 | Z_DEFAULT_STRATEGY); | |
1261 | ||
1262 | fp->stream.next_out = fp->cbuf; | |
1263 | fp->stream.avail_out = sizeof(fp->cbuf); | |
1264 | fp->compressed = 1; | |
1265 | fp->crc = crc32(0L, Z_NULL, 0); | |
1266 | } | |
1267 | #endif /* HAVE_LIBZ */ | |
1268 | break; | |
1269 | ||
1270 | case 'r' : | |
1271 | fp->mode = 'r'; | |
1272 | break; | |
1273 | ||
1274 | case 's' : | |
1275 | fp->mode = 's'; | |
1276 | break; | |
1277 | ||
1278 | default : /* Remove bogus compiler warning... */ | |
1279 | return (NULL); | |
1280 | } | |
1281 | ||
1282 | /* | |
1283 | * Don't pass this file to child processes... | |
1284 | */ | |
1285 | ||
19dc16f7 | 1286 | #ifndef _WIN32 |
ef416fc2 | 1287 | fcntl(fp->fd, F_SETFD, fcntl(fp->fd, F_GETFD) | FD_CLOEXEC); |
19dc16f7 | 1288 | #endif /* !_WIN32 */ |
ef416fc2 | 1289 | |
1290 | return (fp); | |
1291 | } | |
1292 | ||
1293 | ||
5a855d85 MS |
1294 | /* |
1295 | * '_cupsFilePeekAhead()' - See if the requested character is buffered up. | |
1296 | */ | |
1297 | ||
1298 | int /* O - 1 if present, 0 otherwise */ | |
1299 | _cupsFilePeekAhead(cups_file_t *fp, /* I - CUPS file */ | |
1300 | int ch) /* I - Character */ | |
1301 | { | |
1302 | return (fp && fp->ptr && memchr(fp->ptr, ch, (size_t)(fp->end - fp->ptr))); | |
1303 | } | |
1304 | ||
1305 | ||
ef416fc2 | 1306 | /* |
1307 | * 'cupsFilePeekChar()' - Peek at the next character from a file. | |
5a738aea | 1308 | * |
8072030b | 1309 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 1310 | */ |
1311 | ||
5a738aea | 1312 | int /* O - Character or -1 on end of file */ |
ef416fc2 | 1313 | cupsFilePeekChar(cups_file_t *fp) /* I - CUPS file */ |
1314 | { | |
1315 | /* | |
1316 | * Range check input... | |
1317 | */ | |
1318 | ||
1319 | if (!fp || (fp->mode != 'r' && fp->mode != 's')) | |
1320 | return (-1); | |
1321 | ||
1322 | /* | |
1323 | * If the input buffer is empty, try to read more data... | |
1324 | */ | |
1325 | ||
1326 | if (fp->ptr >= fp->end) | |
cbf9404a | 1327 | if (cups_fill(fp) <= 0) |
ef416fc2 | 1328 | return (-1); |
1329 | ||
1330 | /* | |
1331 | * Return the next character in the buffer... | |
1332 | */ | |
1333 | ||
1334 | return (*(fp->ptr) & 255); | |
1335 | } | |
1336 | ||
1337 | ||
1338 | /* | |
1339 | * 'cupsFilePrintf()' - Write a formatted string. | |
5a738aea | 1340 | * |
8072030b | 1341 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 1342 | */ |
1343 | ||
5a738aea | 1344 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1345 | cupsFilePrintf(cups_file_t *fp, /* I - CUPS file */ |
1346 | const char *format, /* I - Printf-style format string */ | |
1347 | ...) /* I - Additional args as necessary */ | |
1348 | { | |
1349 | va_list ap; /* Argument list */ | |
2abf387c | 1350 | ssize_t bytes; /* Formatted size */ |
ecdc0628 | 1351 | |
ef416fc2 | 1352 | |
807315e6 | 1353 | DEBUG_printf(("2cupsFilePrintf(fp=%p, format=\"%s\", ...)", (void *)fp, format)); |
ef416fc2 | 1354 | |
1355 | if (!fp || !format || (fp->mode != 'w' && fp->mode != 's')) | |
1356 | return (-1); | |
1357 | ||
75bd9771 MS |
1358 | if (!fp->printf_buffer) |
1359 | { | |
1360 | /* | |
1361 | * Start with an 1k printf buffer... | |
1362 | */ | |
1363 | ||
1364 | if ((fp->printf_buffer = malloc(1024)) == NULL) | |
1365 | return (-1); | |
1366 | ||
1367 | fp->printf_size = 1024; | |
1368 | } | |
1369 | ||
ef416fc2 | 1370 | va_start(ap, format); |
75bd9771 | 1371 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); |
ef416fc2 | 1372 | va_end(ap); |
1373 | ||
536bc2c6 | 1374 | if (bytes >= (ssize_t)fp->printf_size) |
75bd9771 MS |
1375 | { |
1376 | /* | |
1377 | * Expand the printf buffer... | |
1378 | */ | |
1379 | ||
1380 | char *temp; /* Temporary buffer pointer */ | |
1381 | ||
1382 | ||
1383 | if (bytes > 65535) | |
1384 | return (-1); | |
1385 | ||
7e86f2f6 | 1386 | if ((temp = realloc(fp->printf_buffer, (size_t)(bytes + 1))) == NULL) |
75bd9771 MS |
1387 | return (-1); |
1388 | ||
1389 | fp->printf_buffer = temp; | |
7e86f2f6 | 1390 | fp->printf_size = (size_t)(bytes + 1); |
75bd9771 MS |
1391 | |
1392 | va_start(ap, format); | |
1393 | bytes = vsnprintf(fp->printf_buffer, fp->printf_size, format, ap); | |
1394 | va_end(ap); | |
1395 | } | |
ecdc0628 | 1396 | |
ef416fc2 | 1397 | if (fp->mode == 's') |
634763e8 | 1398 | { |
7e86f2f6 | 1399 | if (cups_write(fp, fp->printf_buffer, (size_t)bytes) < 0) |
634763e8 MS |
1400 | return (-1); |
1401 | ||
1402 | fp->pos += bytes; | |
1403 | ||
e07d4801 | 1404 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1405 | |
7e86f2f6 | 1406 | return ((int)bytes); |
634763e8 | 1407 | } |
ef416fc2 | 1408 | |
1409 | if ((fp->ptr + bytes) > fp->end) | |
1410 | if (cupsFileFlush(fp)) | |
1411 | return (-1); | |
1412 | ||
1413 | fp->pos += bytes; | |
1414 | ||
e07d4801 | 1415 | DEBUG_printf(("4cupsFilePrintf: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1416 | |
7e86f2f6 | 1417 | if ((size_t)bytes > sizeof(fp->buf)) |
ef416fc2 | 1418 | { |
1419 | #ifdef HAVE_LIBZ | |
1420 | if (fp->compressed) | |
7e86f2f6 | 1421 | return ((int)cups_compress(fp, fp->printf_buffer, (size_t)bytes)); |
ef416fc2 | 1422 | else |
1423 | #endif /* HAVE_LIBZ */ | |
7e86f2f6 | 1424 | return ((int)cups_write(fp, fp->printf_buffer, (size_t)bytes)); |
ef416fc2 | 1425 | } |
1426 | else | |
1427 | { | |
07623986 | 1428 | memcpy(fp->ptr, fp->printf_buffer, (size_t)bytes); |
ef416fc2 | 1429 | fp->ptr += bytes; |
35fc2243 MS |
1430 | |
1431 | if (fp->is_stdio && cupsFileFlush(fp)) | |
1432 | return (-1); | |
1433 | else | |
1434 | return ((int)bytes); | |
ef416fc2 | 1435 | } |
1436 | } | |
1437 | ||
1438 | ||
1439 | /* | |
1440 | * 'cupsFilePutChar()' - Write a character. | |
5a738aea | 1441 | * |
8072030b | 1442 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 1443 | */ |
1444 | ||
1445 | int /* O - 0 on success, -1 on error */ | |
1446 | cupsFilePutChar(cups_file_t *fp, /* I - CUPS file */ | |
1447 | int c) /* I - Character to write */ | |
1448 | { | |
1449 | /* | |
1450 | * Range check input... | |
1451 | */ | |
1452 | ||
1453 | if (!fp || (fp->mode != 'w' && fp->mode != 's')) | |
1454 | return (-1); | |
1455 | ||
1456 | if (fp->mode == 's') | |
1457 | { | |
1458 | /* | |
1459 | * Send character immediately over socket... | |
1460 | */ | |
1461 | ||
1462 | char ch; /* Output character */ | |
1463 | ||
1464 | ||
7e86f2f6 | 1465 | ch = (char)c; |
ef416fc2 | 1466 | |
1467 | if (send(fp->fd, &ch, 1, 0) < 1) | |
1468 | return (-1); | |
1469 | } | |
1470 | else | |
1471 | { | |
1472 | /* | |
1473 | * Buffer it up... | |
1474 | */ | |
1475 | ||
1476 | if (fp->ptr >= fp->end) | |
1477 | if (cupsFileFlush(fp)) | |
1478 | return (-1); | |
1479 | ||
7e86f2f6 | 1480 | *(fp->ptr) ++ = (char)c; |
ef416fc2 | 1481 | } |
1482 | ||
1483 | fp->pos ++; | |
1484 | ||
e07d4801 | 1485 | DEBUG_printf(("4cupsFilePutChar: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1486 | |
ef416fc2 | 1487 | return (0); |
1488 | } | |
1489 | ||
1490 | ||
58dc1933 MS |
1491 | /* |
1492 | * 'cupsFilePutConf()' - Write a configuration line. | |
1493 | * | |
1494 | * This function handles any comment escaping of the value. | |
1495 | * | |
8072030b | 1496 | * @since CUPS 1.4/macOS 10.6@ |
58dc1933 MS |
1497 | */ |
1498 | ||
1499 | ssize_t /* O - Number of bytes written or -1 on error */ | |
1500 | cupsFilePutConf(cups_file_t *fp, /* I - CUPS file */ | |
1501 | const char *directive, /* I - Directive */ | |
1502 | const char *value) /* I - Value */ | |
1503 | { | |
1504 | ssize_t bytes, /* Number of bytes written */ | |
1505 | temp; /* Temporary byte count */ | |
1506 | const char *ptr; /* Pointer into value */ | |
1507 | ||
1508 | ||
1509 | if (!fp || !directive || !*directive) | |
1510 | return (-1); | |
1511 | ||
1512 | if ((bytes = cupsFilePuts(fp, directive)) < 0) | |
1513 | return (-1); | |
1514 | ||
1515 | if (cupsFilePutChar(fp, ' ') < 0) | |
1516 | return (-1); | |
1517 | bytes ++; | |
1518 | ||
1519 | if (value && *value) | |
1520 | { | |
1521 | if ((ptr = strchr(value, '#')) != NULL) | |
1522 | { | |
1523 | /* | |
1524 | * Need to quote the first # in the info string... | |
1525 | */ | |
1526 | ||
7e86f2f6 | 1527 | if ((temp = cupsFileWrite(fp, value, (size_t)(ptr - value))) < 0) |
58dc1933 MS |
1528 | return (-1); |
1529 | bytes += temp; | |
1530 | ||
1531 | if (cupsFilePutChar(fp, '\\') < 0) | |
1532 | return (-1); | |
1533 | bytes ++; | |
1534 | ||
1535 | if ((temp = cupsFilePuts(fp, ptr)) < 0) | |
1536 | return (-1); | |
1537 | bytes += temp; | |
1538 | } | |
1539 | else if ((temp = cupsFilePuts(fp, value)) < 0) | |
1540 | return (-1); | |
1541 | else | |
1542 | bytes += temp; | |
1543 | } | |
1544 | ||
1545 | if (cupsFilePutChar(fp, '\n') < 0) | |
1546 | return (-1); | |
1547 | else | |
1548 | return (bytes + 1); | |
1549 | } | |
1550 | ||
1551 | ||
ef416fc2 | 1552 | /* |
1553 | * 'cupsFilePuts()' - Write a string. | |
5a738aea MS |
1554 | * |
1555 | * Like the @code fputs@ function, no newline is appended to the string. | |
1556 | * | |
8072030b | 1557 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 1558 | */ |
1559 | ||
5a738aea | 1560 | int /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 1561 | cupsFilePuts(cups_file_t *fp, /* I - CUPS file */ |
1562 | const char *s) /* I - String to write */ | |
1563 | { | |
2abf387c | 1564 | ssize_t bytes; /* Bytes to write */ |
ef416fc2 | 1565 | |
1566 | ||
1567 | /* | |
1568 | * Range check input... | |
1569 | */ | |
1570 | ||
1571 | if (!fp || !s || (fp->mode != 'w' && fp->mode != 's')) | |
1572 | return (-1); | |
1573 | ||
1574 | /* | |
1575 | * Write the string... | |
1576 | */ | |
1577 | ||
7e86f2f6 | 1578 | bytes = (ssize_t)strlen(s); |
ef416fc2 | 1579 | |
1580 | if (fp->mode == 's') | |
1581 | { | |
7e86f2f6 | 1582 | if (cups_write(fp, s, (size_t)bytes) < 0) |
ef416fc2 | 1583 | return (-1); |
1584 | ||
1585 | fp->pos += bytes; | |
1586 | ||
e07d4801 | 1587 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1588 | |
7e86f2f6 | 1589 | return ((int)bytes); |
ef416fc2 | 1590 | } |
1591 | ||
1592 | if ((fp->ptr + bytes) > fp->end) | |
1593 | if (cupsFileFlush(fp)) | |
1594 | return (-1); | |
1595 | ||
1596 | fp->pos += bytes; | |
1597 | ||
e07d4801 | 1598 | DEBUG_printf(("4cupsFilePuts: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1599 | |
7e86f2f6 | 1600 | if ((size_t)bytes > sizeof(fp->buf)) |
ef416fc2 | 1601 | { |
1602 | #ifdef HAVE_LIBZ | |
1603 | if (fp->compressed) | |
7e86f2f6 | 1604 | return ((int)cups_compress(fp, s, (size_t)bytes)); |
ef416fc2 | 1605 | else |
1606 | #endif /* HAVE_LIBZ */ | |
7e86f2f6 | 1607 | return ((int)cups_write(fp, s, (size_t)bytes)); |
ef416fc2 | 1608 | } |
1609 | else | |
1610 | { | |
07623986 | 1611 | memcpy(fp->ptr, s, (size_t)bytes); |
ef416fc2 | 1612 | fp->ptr += bytes; |
35fc2243 MS |
1613 | |
1614 | if (fp->is_stdio && cupsFileFlush(fp)) | |
1615 | return (-1); | |
1616 | else | |
1617 | return ((int)bytes); | |
ef416fc2 | 1618 | } |
1619 | } | |
1620 | ||
1621 | ||
1622 | /* | |
1623 | * 'cupsFileRead()' - Read from a file. | |
5a738aea | 1624 | * |
8072030b | 1625 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 1626 | */ |
1627 | ||
5a738aea | 1628 | ssize_t /* O - Number of bytes read or -1 on error */ |
ef416fc2 | 1629 | cupsFileRead(cups_file_t *fp, /* I - CUPS file */ |
1630 | char *buf, /* O - Buffer */ | |
1631 | size_t bytes) /* I - Number of bytes to read */ | |
1632 | { | |
2abf387c | 1633 | size_t total; /* Total bytes read */ |
1634 | ssize_t count; /* Bytes read */ | |
ef416fc2 | 1635 | |
1636 | ||
807315e6 | 1637 | DEBUG_printf(("2cupsFileRead(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST bytes)); |
ef416fc2 | 1638 | |
1639 | /* | |
1640 | * Range check input... | |
1641 | */ | |
1642 | ||
82f97232 | 1643 | if (!fp || !buf || (fp->mode != 'r' && fp->mode != 's')) |
ef416fc2 | 1644 | return (-1); |
1645 | ||
1646 | if (bytes == 0) | |
1647 | return (0); | |
1648 | ||
1649 | /* | |
1650 | * Loop until all bytes are read... | |
1651 | */ | |
1652 | ||
1653 | total = 0; | |
1654 | while (bytes > 0) | |
1655 | { | |
1656 | if (fp->ptr >= fp->end) | |
1657 | if (cups_fill(fp) <= 0) | |
1658 | { | |
e07d4801 MS |
1659 | DEBUG_printf(("4cupsFileRead: cups_fill() returned -1, total=" |
1660 | CUPS_LLFMT, CUPS_LLCAST total)); | |
ef416fc2 | 1661 | |
1662 | if (total > 0) | |
b86bc4cf | 1663 | return ((ssize_t)total); |
ef416fc2 | 1664 | else |
1665 | return (-1); | |
1666 | } | |
1667 | ||
b86bc4cf | 1668 | count = (ssize_t)(fp->end - fp->ptr); |
1669 | if (count > (ssize_t)bytes) | |
1670 | count = (ssize_t)bytes; | |
ef416fc2 | 1671 | |
07623986 | 1672 | memcpy(buf, fp->ptr,(size_t) count); |
ef416fc2 | 1673 | fp->ptr += count; |
634763e8 MS |
1674 | fp->pos += count; |
1675 | ||
e07d4801 | 1676 | DEBUG_printf(("4cupsFileRead: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
ef416fc2 | 1677 | |
1678 | /* | |
1679 | * Update the counts for the last read... | |
1680 | */ | |
1681 | ||
7e86f2f6 MS |
1682 | bytes -= (size_t)count; |
1683 | total += (size_t)count; | |
ef416fc2 | 1684 | buf += count; |
1685 | } | |
1686 | ||
1687 | /* | |
1688 | * Return the total number of bytes read... | |
1689 | */ | |
1690 | ||
e07d4801 | 1691 | DEBUG_printf(("3cupsFileRead: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
ef416fc2 | 1692 | |
b86bc4cf | 1693 | return ((ssize_t)total); |
ef416fc2 | 1694 | } |
1695 | ||
1696 | ||
1697 | /* | |
5a738aea MS |
1698 | * 'cupsFileRewind()' - Set the current file position to the beginning of the |
1699 | * file. | |
1700 | * | |
8072030b | 1701 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 1702 | */ |
1703 | ||
5a738aea | 1704 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1705 | cupsFileRewind(cups_file_t *fp) /* I - CUPS file */ |
1706 | { | |
80ca4592 | 1707 | /* |
1708 | * Range check input... | |
1709 | */ | |
1710 | ||
807315e6 | 1711 | DEBUG_printf(("cupsFileRewind(fp=%p)", (void *)fp)); |
e07d4801 | 1712 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1713 | |
80ca4592 | 1714 | if (!fp || fp->mode != 'r') |
1715 | return (-1); | |
1716 | ||
1717 | /* | |
1718 | * Handle special cases... | |
1719 | */ | |
1720 | ||
634763e8 | 1721 | if (fp->bufpos == 0) |
80ca4592 | 1722 | { |
1723 | /* | |
1724 | * No seeking necessary... | |
1725 | */ | |
1726 | ||
634763e8 MS |
1727 | fp->pos = 0; |
1728 | ||
80ca4592 | 1729 | if (fp->ptr) |
1730 | { | |
1731 | fp->ptr = fp->buf; | |
1732 | fp->eof = 0; | |
1733 | } | |
1734 | ||
e07d4801 | 1735 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 1736 | |
80ca4592 | 1737 | return (0); |
1738 | } | |
1739 | ||
1740 | /* | |
1741 | * Otherwise, seek in the file and cleanup any compression buffers... | |
1742 | */ | |
1743 | ||
1744 | #ifdef HAVE_LIBZ | |
1745 | if (fp->compressed) | |
1746 | { | |
1747 | inflateEnd(&fp->stream); | |
1748 | fp->compressed = 0; | |
1749 | } | |
1750 | #endif /* HAVE_LIBZ */ | |
1751 | ||
c9fc04c6 MS |
1752 | if (lseek(fp->fd, 0, SEEK_SET)) |
1753 | { | |
e07d4801 | 1754 | DEBUG_printf(("1cupsFileRewind: lseek failed: %s", strerror(errno))); |
c9fc04c6 MS |
1755 | return (-1); |
1756 | } | |
80ca4592 | 1757 | |
634763e8 MS |
1758 | fp->bufpos = 0; |
1759 | fp->pos = 0; | |
1760 | fp->ptr = NULL; | |
1761 | fp->end = NULL; | |
1762 | fp->eof = 0; | |
1763 | ||
e07d4801 | 1764 | DEBUG_printf(("2cupsFileRewind: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
80ca4592 | 1765 | |
1766 | return (0); | |
ef416fc2 | 1767 | } |
1768 | ||
1769 | ||
1770 | /* | |
1771 | * 'cupsFileSeek()' - Seek in a file. | |
5a738aea | 1772 | * |
8072030b | 1773 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 1774 | */ |
1775 | ||
5a738aea | 1776 | off_t /* O - New file position or -1 on error */ |
ef416fc2 | 1777 | cupsFileSeek(cups_file_t *fp, /* I - CUPS file */ |
1778 | off_t pos) /* I - Position in file */ | |
1779 | { | |
2abf387c | 1780 | ssize_t bytes; /* Number bytes in buffer */ |
ef416fc2 | 1781 | |
1782 | ||
807315e6 | 1783 | DEBUG_printf(("cupsFileSeek(fp=%p, pos=" CUPS_LLFMT ")", (void *)fp, CUPS_LLCAST pos)); |
e07d4801 | 1784 | DEBUG_printf(("2cupsFileSeek: fp->pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
807315e6 | 1785 | DEBUG_printf(("2cupsFileSeek: fp->ptr=%p, fp->end=%p", (void *)fp->ptr, (void *)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 | ||
cbf9404a | 1828 | if (cups_fill(fp) <= 0) |
80ca4592 | 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 | * |
8072030b | 1925 | * @since CUPS 1.2/macOS 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 | * |
8072030b | 1961 | * @since CUPS 1.2/macOS 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 | * |
8072030b | 1991 | * @since CUPS 1.2/macOS 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 | * |
8072030b | 2027 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 2028 | */ |
2029 | ||
2030 | off_t /* O - File position */ | |
2031 | cupsFileTell(cups_file_t *fp) /* I - CUPS file */ | |
2032 | { | |
807315e6 MS |
2033 | DEBUG_printf(("2cupsFileTell(fp=%p)", (void *)fp)); |
2034 | DEBUG_printf(("3cupsFileTell: pos=" CUPS_LLFMT, CUPS_LLCAST (fp ? fp->pos : -1))); | |
634763e8 | 2035 | |
80ca4592 | 2036 | return (fp ? fp->pos : 0); |
ef416fc2 | 2037 | } |
2038 | ||
2039 | ||
2040 | /* | |
2041 | * 'cupsFileUnlock()' - Unlock access to a file. | |
5a738aea | 2042 | * |
8072030b | 2043 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 2044 | */ |
2045 | ||
2046 | int /* O - 0 on success, -1 on error */ | |
5a738aea | 2047 | cupsFileUnlock(cups_file_t *fp) /* I - CUPS file */ |
ef416fc2 | 2048 | { |
2049 | /* | |
2050 | * Range check... | |
2051 | */ | |
2052 | ||
807315e6 | 2053 | DEBUG_printf(("cupsFileUnlock(fp=%p)", (void *)fp)); |
634763e8 | 2054 | |
ef416fc2 | 2055 | if (!fp || fp->mode == 's') |
2056 | return (-1); | |
2057 | ||
2058 | /* | |
2059 | * Unlock... | |
2060 | */ | |
2061 | ||
19dc16f7 | 2062 | #ifdef _WIN32 |
536bc2c6 | 2063 | return (_locking(fp->fd, _LK_UNLCK, 0)); |
ef416fc2 | 2064 | #else |
2065 | return (lockf(fp->fd, F_ULOCK, 0)); | |
19dc16f7 | 2066 | #endif /* _WIN32 */ |
ef416fc2 | 2067 | } |
2068 | ||
2069 | ||
2070 | /* | |
2071 | * 'cupsFileWrite()' - Write to a file. | |
5a738aea | 2072 | * |
8072030b | 2073 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 2074 | */ |
2075 | ||
5a738aea | 2076 | ssize_t /* O - Number of bytes written or -1 on error */ |
ef416fc2 | 2077 | cupsFileWrite(cups_file_t *fp, /* I - CUPS file */ |
2078 | const char *buf, /* I - Buffer */ | |
2079 | size_t bytes) /* I - Number of bytes to write */ | |
2080 | { | |
2081 | /* | |
2082 | * Range check input... | |
2083 | */ | |
2084 | ||
807315e6 | 2085 | DEBUG_printf(("2cupsFileWrite(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST bytes)); |
634763e8 | 2086 | |
82f97232 | 2087 | if (!fp || !buf || (fp->mode != 'w' && fp->mode != 's')) |
ef416fc2 | 2088 | return (-1); |
2089 | ||
2090 | if (bytes == 0) | |
2091 | return (0); | |
2092 | ||
2093 | /* | |
2094 | * Write the buffer... | |
2095 | */ | |
2096 | ||
2097 | if (fp->mode == 's') | |
2098 | { | |
2099 | if (cups_write(fp, buf, bytes) < 0) | |
2100 | return (-1); | |
2101 | ||
b86bc4cf | 2102 | fp->pos += (off_t)bytes; |
ef416fc2 | 2103 | |
e07d4801 | 2104 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2105 | |
b86bc4cf | 2106 | return ((ssize_t)bytes); |
ef416fc2 | 2107 | } |
2108 | ||
2109 | if ((fp->ptr + bytes) > fp->end) | |
2110 | if (cupsFileFlush(fp)) | |
2111 | return (-1); | |
2112 | ||
b86bc4cf | 2113 | fp->pos += (off_t)bytes; |
ef416fc2 | 2114 | |
e07d4801 | 2115 | DEBUG_printf(("4cupsFileWrite: pos=" CUPS_LLFMT, CUPS_LLCAST fp->pos)); |
634763e8 | 2116 | |
ef416fc2 | 2117 | if (bytes > sizeof(fp->buf)) |
2118 | { | |
2119 | #ifdef HAVE_LIBZ | |
2120 | if (fp->compressed) | |
2121 | return (cups_compress(fp, buf, bytes)); | |
2122 | else | |
2123 | #endif /* HAVE_LIBZ */ | |
2124 | return (cups_write(fp, buf, bytes)); | |
2125 | } | |
2126 | else | |
2127 | { | |
2128 | memcpy(fp->ptr, buf, bytes); | |
2129 | fp->ptr += bytes; | |
b86bc4cf | 2130 | return ((ssize_t)bytes); |
ef416fc2 | 2131 | } |
2132 | } | |
2133 | ||
2134 | ||
2135 | #ifdef HAVE_LIBZ | |
2136 | /* | |
22c9029b | 2137 | * 'cups_compress()' - Compress a buffer of data. |
ef416fc2 | 2138 | */ |
2139 | ||
2140 | static ssize_t /* O - Number of bytes written or -1 */ | |
2141 | cups_compress(cups_file_t *fp, /* I - CUPS file */ | |
2142 | const char *buf, /* I - Buffer */ | |
2143 | size_t bytes) /* I - Number bytes */ | |
2144 | { | |
807315e6 | 2145 | DEBUG_printf(("7cups_compress(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST bytes)); |
ecdc0628 | 2146 | |
ef416fc2 | 2147 | /* |
2148 | * Update the CRC... | |
2149 | */ | |
2150 | ||
7e86f2f6 | 2151 | fp->crc = crc32(fp->crc, (const Bytef *)buf, (uInt)bytes); |
ef416fc2 | 2152 | |
2153 | /* | |
2154 | * Deflate the bytes... | |
2155 | */ | |
2156 | ||
2157 | fp->stream.next_in = (Bytef *)buf; | |
7e86f2f6 | 2158 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2159 | |
2160 | while (fp->stream.avail_in > 0) | |
2161 | { | |
2162 | /* | |
2163 | * Flush the current buffer... | |
2164 | */ | |
2165 | ||
e07d4801 | 2166 | DEBUG_printf(("9cups_compress: avail_in=%d, avail_out=%d", |
634763e8 | 2167 | fp->stream.avail_in, fp->stream.avail_out)); |
ecdc0628 | 2168 | |
7e86f2f6 | 2169 | if (fp->stream.avail_out < (uInt)(sizeof(fp->cbuf) / 8)) |
ef416fc2 | 2170 | { |
7e86f2f6 | 2171 | if (cups_write(fp, (char *)fp->cbuf, (size_t)(fp->stream.next_out - fp->cbuf)) < 0) |
ef416fc2 | 2172 | return (-1); |
ecdc0628 | 2173 | |
2174 | fp->stream.next_out = fp->cbuf; | |
2175 | fp->stream.avail_out = sizeof(fp->cbuf); | |
ef416fc2 | 2176 | } |
2177 | ||
2178 | deflate(&(fp->stream), Z_NO_FLUSH); | |
2179 | } | |
2180 | ||
7e86f2f6 | 2181 | return ((ssize_t)bytes); |
ef416fc2 | 2182 | } |
2183 | #endif /* HAVE_LIBZ */ | |
2184 | ||
2185 | ||
2186 | /* | |
22c9029b | 2187 | * 'cups_fill()' - Fill the input buffer. |
ef416fc2 | 2188 | */ |
2189 | ||
2190 | static ssize_t /* O - Number of bytes or -1 */ | |
2191 | cups_fill(cups_file_t *fp) /* I - CUPS file */ | |
2192 | { | |
2193 | ssize_t bytes; /* Number of bytes read */ | |
2194 | #ifdef HAVE_LIBZ | |
c277e2f8 | 2195 | int status; /* Decompression status */ |
ef416fc2 | 2196 | const unsigned char *ptr, /* Pointer into buffer */ |
2197 | *end; /* End of buffer */ | |
2198 | #endif /* HAVE_LIBZ */ | |
2199 | ||
2200 | ||
807315e6 MS |
2201 | DEBUG_printf(("7cups_fill(fp=%p)", (void *)fp)); |
2202 | DEBUG_printf(("9cups_fill: fp->ptr=%p, fp->end=%p, fp->buf=%p, fp->bufpos=" CUPS_LLFMT ", fp->eof=%d", (void *)fp->ptr, (void *)fp->end, (void *)fp->buf, CUPS_LLCAST fp->bufpos, fp->eof)); | |
ef416fc2 | 2203 | |
2204 | if (fp->ptr && fp->end) | |
c9fc04c6 | 2205 | fp->bufpos += fp->end - fp->buf; |
ef416fc2 | 2206 | |
2207 | #ifdef HAVE_LIBZ | |
e07d4801 | 2208 | DEBUG_printf(("9cups_fill: fp->compressed=%d", fp->compressed)); |
b423cd4c | 2209 | |
ef416fc2 | 2210 | while (!fp->ptr || fp->compressed) |
2211 | { | |
2212 | /* | |
2213 | * Check to see if we have read any data yet; if not, see if we have a | |
2214 | * compressed file... | |
2215 | */ | |
2216 | ||
2217 | if (!fp->ptr) | |
2218 | { | |
2219 | /* | |
2220 | * Reset the file position in case we are seeking... | |
2221 | */ | |
2222 | ||
2223 | fp->compressed = 0; | |
ef416fc2 | 2224 | |
2225 | /* | |
2226 | * Read the first bytes in the file to determine if we have a gzip'd | |
2227 | * file... | |
2228 | */ | |
2229 | ||
fa73b229 | 2230 | if ((bytes = cups_read(fp, (char *)fp->buf, sizeof(fp->buf))) < 0) |
ef416fc2 | 2231 | { |
2232 | /* | |
2233 | * Can't read from file! | |
2234 | */ | |
2235 | ||
e07d4801 | 2236 | DEBUG_printf(("9cups_fill: cups_read() returned " CUPS_LLFMT, |
b423cd4c | 2237 | CUPS_LLCAST bytes)); |
2238 | ||
cbf9404a MS |
2239 | fp->eof = 1; |
2240 | ||
ef416fc2 | 2241 | return (-1); |
2242 | } | |
2243 | ||
fa73b229 | 2244 | if (bytes < 10 || fp->buf[0] != 0x1f || |
e00b005a | 2245 | (fp->buf[1] & 255) != 0x8b || |
fa73b229 | 2246 | fp->buf[2] != 8 || (fp->buf[3] & 0xe0) != 0) |
ef416fc2 | 2247 | { |
2248 | /* | |
2249 | * Not a gzip'd file! | |
2250 | */ | |
2251 | ||
ef416fc2 | 2252 | fp->ptr = fp->buf; |
2253 | fp->end = fp->buf + bytes; | |
2254 | ||
e07d4801 | 2255 | DEBUG_printf(("9cups_fill: Returning " CUPS_LLFMT, |
c9fc04c6 | 2256 | CUPS_LLCAST bytes)); |
b423cd4c | 2257 | |
ef416fc2 | 2258 | return (bytes); |
2259 | } | |
2260 | ||
2261 | /* | |
2262 | * Parse header junk: extra data, original name, and comment... | |
2263 | */ | |
2264 | ||
fa73b229 | 2265 | ptr = (unsigned char *)fp->buf + 10; |
2266 | end = (unsigned char *)fp->buf + bytes; | |
ef416fc2 | 2267 | |
fa73b229 | 2268 | if (fp->buf[3] & 0x04) |
ef416fc2 | 2269 | { |
2270 | /* | |
2271 | * Skip extra data... | |
2272 | */ | |
2273 | ||
2274 | if ((ptr + 2) > end) | |
2275 | { | |
2276 | /* | |
2277 | * Can't read from file! | |
2278 | */ | |
2279 | ||
cbf9404a MS |
2280 | DEBUG_puts("9cups_fill: Extra gzip header data missing, returning -1."); |
2281 | ||
2282 | fp->eof = 1; | |
2283 | errno = EIO; | |
2284 | ||
ef416fc2 | 2285 | return (-1); |
2286 | } | |
2287 | ||
2288 | bytes = ((unsigned char)ptr[1] << 8) | (unsigned char)ptr[0]; | |
2289 | ptr += 2 + bytes; | |
2290 | ||
2291 | if (ptr > end) | |
2292 | { | |
2293 | /* | |
2294 | * Can't read from file! | |
2295 | */ | |
2296 | ||
cbf9404a MS |
2297 | DEBUG_puts("9cups_fill: Extra gzip header data does not fit in initial buffer, returning -1."); |
2298 | ||
2299 | fp->eof = 1; | |
2300 | errno = EIO; | |
2301 | ||
ef416fc2 | 2302 | return (-1); |
2303 | } | |
2304 | } | |
2305 | ||
fa73b229 | 2306 | if (fp->buf[3] & 0x08) |
ef416fc2 | 2307 | { |
2308 | /* | |
2309 | * Skip original name data... | |
2310 | */ | |
2311 | ||
2312 | while (ptr < end && *ptr) | |
2313 | ptr ++; | |
2314 | ||
2315 | if (ptr < end) | |
2316 | ptr ++; | |
2317 | else | |
2318 | { | |
2319 | /* | |
2320 | * Can't read from file! | |
2321 | */ | |
2322 | ||
cbf9404a MS |
2323 | DEBUG_puts("9cups_fill: Original filename in gzip header data does not fit in initial buffer, returning -1."); |
2324 | ||
2325 | fp->eof = 1; | |
2326 | errno = EIO; | |
2327 | ||
ef416fc2 | 2328 | return (-1); |
2329 | } | |
2330 | } | |
2331 | ||
fa73b229 | 2332 | if (fp->buf[3] & 0x10) |
ef416fc2 | 2333 | { |
2334 | /* | |
2335 | * Skip comment data... | |
2336 | */ | |
2337 | ||
2338 | while (ptr < end && *ptr) | |
2339 | ptr ++; | |
2340 | ||
2341 | if (ptr < end) | |
2342 | ptr ++; | |
2343 | else | |
2344 | { | |
2345 | /* | |
2346 | * Can't read from file! | |
2347 | */ | |
2348 | ||
cbf9404a MS |
2349 | DEBUG_puts("9cups_fill: Comment in gzip header data does not fit in initial buffer, returning -1."); |
2350 | ||
2351 | fp->eof = 1; | |
2352 | errno = EIO; | |
2353 | ||
ef416fc2 | 2354 | return (-1); |
2355 | } | |
2356 | } | |
2357 | ||
fa73b229 | 2358 | if (fp->buf[3] & 0x02) |
ef416fc2 | 2359 | { |
2360 | /* | |
2361 | * Skip header CRC data... | |
2362 | */ | |
2363 | ||
2364 | ptr += 2; | |
2365 | ||
2366 | if (ptr > end) | |
2367 | { | |
2368 | /* | |
2369 | * Can't read from file! | |
2370 | */ | |
2371 | ||
cbf9404a MS |
2372 | DEBUG_puts("9cups_fill: Header CRC in gzip header data does not fit in initial buffer, returning -1."); |
2373 | ||
2374 | fp->eof = 1; | |
2375 | errno = EIO; | |
2376 | ||
ef416fc2 | 2377 | return (-1); |
2378 | } | |
2379 | } | |
2380 | ||
fa73b229 | 2381 | /* |
2382 | * Copy the flate-compressed data to the compression buffer... | |
2383 | */ | |
2384 | ||
2385 | if ((bytes = end - ptr) > 0) | |
07623986 | 2386 | memcpy(fp->cbuf, ptr, (size_t)bytes); |
fa73b229 | 2387 | |
ef416fc2 | 2388 | /* |
2389 | * Setup the decompressor data... | |
2390 | */ | |
2391 | ||
2392 | fp->stream.zalloc = (alloc_func)0; | |
2393 | fp->stream.zfree = (free_func)0; | |
2394 | fp->stream.opaque = (voidpf)0; | |
fa73b229 | 2395 | fp->stream.next_in = (Bytef *)fp->cbuf; |
ef416fc2 | 2396 | fp->stream.next_out = NULL; |
7e86f2f6 | 2397 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2398 | fp->stream.avail_out = 0; |
2399 | fp->crc = crc32(0L, Z_NULL, 0); | |
2400 | ||
cbf9404a MS |
2401 | if ((status = inflateInit2(&(fp->stream), -15)) != Z_OK) |
2402 | { | |
2403 | DEBUG_printf(("9cups_fill: inflateInit2 returned %d, returning -1.", status)); | |
2404 | ||
2405 | fp->eof = 1; | |
2406 | errno = EIO; | |
2407 | ||
ef416fc2 | 2408 | return (-1); |
cbf9404a | 2409 | } |
ef416fc2 | 2410 | |
2411 | fp->compressed = 1; | |
2412 | } | |
2413 | ||
2414 | if (fp->compressed) | |
2415 | { | |
2416 | /* | |
2417 | * If we have reached end-of-file, return immediately... | |
2418 | */ | |
2419 | ||
2420 | if (fp->eof) | |
cbf9404a MS |
2421 | { |
2422 | DEBUG_puts("9cups_fill: EOF, returning 0."); | |
2423 | ||
2424 | return (0); | |
2425 | } | |
ef416fc2 | 2426 | |
2427 | /* | |
2428 | * Fill the decompression buffer as needed... | |
2429 | */ | |
2430 | ||
2431 | if (fp->stream.avail_in == 0) | |
2432 | { | |
2433 | if ((bytes = cups_read(fp, (char *)fp->cbuf, sizeof(fp->cbuf))) <= 0) | |
cbf9404a MS |
2434 | { |
2435 | DEBUG_printf(("9cups_fill: cups_read error, returning %d.", (int)bytes)); | |
2436 | ||
2437 | fp->eof = 1; | |
2438 | ||
2439 | return (bytes); | |
2440 | } | |
ef416fc2 | 2441 | |
2442 | fp->stream.next_in = fp->cbuf; | |
7e86f2f6 | 2443 | fp->stream.avail_in = (uInt)bytes; |
ef416fc2 | 2444 | } |
2445 | ||
2446 | /* | |
2447 | * Decompress data from the buffer... | |
2448 | */ | |
2449 | ||
2450 | fp->stream.next_out = (Bytef *)fp->buf; | |
2451 | fp->stream.avail_out = sizeof(fp->buf); | |
2452 | ||
c277e2f8 MS |
2453 | status = inflate(&(fp->stream), Z_NO_FLUSH); |
2454 | ||
2455 | if (fp->stream.next_out > (Bytef *)fp->buf) | |
2456 | fp->crc = crc32(fp->crc, (Bytef *)fp->buf, | |
7e86f2f6 | 2457 | (uInt)(fp->stream.next_out - (Bytef *)fp->buf)); |
c277e2f8 MS |
2458 | |
2459 | if (status == Z_STREAM_END) | |
ef416fc2 | 2460 | { |
2461 | /* | |
2462 | * Read the CRC and length... | |
2463 | */ | |
2464 | ||
2465 | unsigned char trailer[8]; /* Trailer bytes */ | |
2466 | uLong tcrc; /* Trailer CRC */ | |
cbf9404a | 2467 | ssize_t tbytes = 0; /* Number of bytes */ |
ef416fc2 | 2468 | |
cbf9404a | 2469 | if (fp->stream.avail_in > 0) |
ef416fc2 | 2470 | { |
cbf9404a MS |
2471 | if (fp->stream.avail_in > sizeof(trailer)) |
2472 | tbytes = (ssize_t)sizeof(trailer); | |
2473 | else | |
2474 | tbytes = (ssize_t)fp->stream.avail_in; | |
ef416fc2 | 2475 | |
b2250eaa | 2476 | memcpy(trailer, fp->stream.next_in, (size_t)tbytes); |
cbf9404a MS |
2477 | fp->stream.next_in += tbytes; |
2478 | fp->stream.avail_in -= (size_t)tbytes; | |
ef416fc2 | 2479 | } |
2480 | ||
cbf9404a MS |
2481 | if (tbytes < (ssize_t)sizeof(trailer)) |
2482 | { | |
2483 | if (read(fp->fd, trailer + tbytes, sizeof(trailer) - (size_t)tbytes) < ((ssize_t)sizeof(trailer) - tbytes)) | |
fa73b229 | 2484 | { |
2485 | /* | |
cbf9404a | 2486 | * Can't get it, so mark end-of-file... |
fa73b229 | 2487 | */ |
2488 | ||
cbf9404a | 2489 | DEBUG_puts("9cups_fill: Unable to read gzip CRC trailer, returning -1."); |
c277e2f8 | 2490 | |
fa73b229 | 2491 | fp->eof = 1; |
cbf9404a | 2492 | errno = EIO; |
fa73b229 | 2493 | |
2494 | return (-1); | |
2495 | } | |
cbf9404a MS |
2496 | } |
2497 | ||
2498 | tcrc = ((((((uLong)trailer[3] << 8) | (uLong)trailer[2]) << 8) | | |
2499 | (uLong)trailer[1]) << 8) | (uLong)trailer[0]; | |
ef416fc2 | 2500 | |
cbf9404a MS |
2501 | if (tcrc != fp->crc) |
2502 | { | |
ef416fc2 | 2503 | /* |
cbf9404a | 2504 | * Bad CRC, mark end-of-file... |
ef416fc2 | 2505 | */ |
ef416fc2 | 2506 | |
cbf9404a MS |
2507 | DEBUG_printf(("9cups_fill: tcrc=%08x != fp->crc=%08x, returning -1.", (unsigned int)tcrc, (unsigned int)fp->crc)); |
2508 | ||
2509 | fp->eof = 1; | |
2510 | errno = EIO; | |
2511 | ||
2512 | return (-1); | |
ef416fc2 | 2513 | } |
cbf9404a MS |
2514 | |
2515 | /* | |
2516 | * Otherwise, reset the compressed flag so that we re-read the | |
2517 | * file header... | |
2518 | */ | |
2519 | ||
b908d72c MS |
2520 | inflateEnd(&fp->stream); |
2521 | ||
cbf9404a MS |
2522 | fp->compressed = 0; |
2523 | } | |
2524 | else if (status < Z_OK) | |
2525 | { | |
2526 | DEBUG_printf(("9cups_fill: inflate returned %d, returning -1.", status)); | |
2527 | ||
2528 | fp->eof = 1; | |
2529 | errno = EIO; | |
2530 | ||
2531 | return (-1); | |
ef416fc2 | 2532 | } |
2533 | ||
7e86f2f6 | 2534 | bytes = (ssize_t)sizeof(fp->buf) - (ssize_t)fp->stream.avail_out; |
ef416fc2 | 2535 | |
2536 | /* | |
2537 | * Return the decompressed data... | |
2538 | */ | |
2539 | ||
2540 | fp->ptr = fp->buf; | |
2541 | fp->end = fp->buf + bytes; | |
2542 | ||
fa73b229 | 2543 | if (bytes) |
cbf9404a MS |
2544 | { |
2545 | DEBUG_printf(("9cups_fill: Returning %d.", (int)bytes)); | |
fa73b229 | 2546 | return (bytes); |
cbf9404a | 2547 | } |
ef416fc2 | 2548 | } |
2549 | } | |
2550 | #endif /* HAVE_LIBZ */ | |
2551 | ||
2552 | /* | |
2553 | * Read a buffer's full of data... | |
2554 | */ | |
2555 | ||
2556 | if ((bytes = cups_read(fp, fp->buf, sizeof(fp->buf))) <= 0) | |
2557 | { | |
2558 | /* | |
2559 | * Can't read from file! | |
2560 | */ | |
2561 | ||
2562 | fp->eof = 1; | |
2563 | fp->ptr = fp->buf; | |
2564 | fp->end = fp->buf; | |
ef416fc2 | 2565 | } |
cbf9404a MS |
2566 | else |
2567 | { | |
2568 | /* | |
2569 | * Return the bytes we read... | |
2570 | */ | |
ef416fc2 | 2571 | |
cbf9404a MS |
2572 | fp->eof = 0; |
2573 | fp->ptr = fp->buf; | |
2574 | fp->end = fp->buf + bytes; | |
2575 | } | |
ef416fc2 | 2576 | |
cbf9404a | 2577 | DEBUG_printf(("9cups_fill: Not gzip, returning %d.", (int)bytes)); |
ef416fc2 | 2578 | |
2579 | return (bytes); | |
2580 | } | |
2581 | ||
2582 | ||
c7017ecc MS |
2583 | /* |
2584 | * 'cups_open()' - Safely open a file for writing. | |
2585 | * | |
2586 | * We don't allow appending to directories or files that are hard-linked or | |
2587 | * symlinked. | |
2588 | */ | |
2589 | ||
2590 | static int /* O - File descriptor or -1 otherwise */ | |
2591 | cups_open(const char *filename, /* I - Filename */ | |
2592 | int mode) /* I - Open mode */ | |
2593 | { | |
2594 | int fd; /* File descriptor */ | |
2595 | struct stat fileinfo; /* File information */ | |
19dc16f7 | 2596 | #ifndef _WIN32 |
c7017ecc | 2597 | struct stat linkinfo; /* Link information */ |
19dc16f7 | 2598 | #endif /* !_WIN32 */ |
c7017ecc MS |
2599 | |
2600 | ||
2601 | /* | |
2602 | * Open the file... | |
2603 | */ | |
2604 | ||
2605 | if ((fd = open(filename, mode, 0666)) < 0) | |
2606 | return (-1); | |
2607 | ||
2608 | /* | |
2609 | * Then verify that the file descriptor doesn't point to a directory or hard- | |
2610 | * linked file. | |
2611 | */ | |
2612 | ||
2613 | if (fstat(fd, &fileinfo)) | |
2614 | { | |
2615 | close(fd); | |
2616 | return (-1); | |
2617 | } | |
2618 | ||
2619 | if (fileinfo.st_nlink != 1) | |
2620 | { | |
2621 | close(fd); | |
2622 | errno = EPERM; | |
2623 | return (-1); | |
2624 | } | |
2625 | ||
19dc16f7 | 2626 | #ifdef _WIN32 |
c7017ecc MS |
2627 | if (fileinfo.st_mode & _S_IFDIR) |
2628 | #else | |
2629 | if (S_ISDIR(fileinfo.st_mode)) | |
19dc16f7 | 2630 | #endif /* _WIN32 */ |
c7017ecc MS |
2631 | { |
2632 | close(fd); | |
2633 | errno = EISDIR; | |
2634 | return (-1); | |
2635 | } | |
2636 | ||
19dc16f7 | 2637 | #ifndef _WIN32 |
c7017ecc MS |
2638 | /* |
2639 | * Then use lstat to determine whether the filename is a symlink... | |
2640 | */ | |
2641 | ||
2642 | if (lstat(filename, &linkinfo)) | |
2643 | { | |
2644 | close(fd); | |
2645 | return (-1); | |
2646 | } | |
2647 | ||
2648 | if (S_ISLNK(linkinfo.st_mode) || | |
2649 | fileinfo.st_dev != linkinfo.st_dev || | |
2650 | fileinfo.st_ino != linkinfo.st_ino || | |
2651 | #ifdef HAVE_ST_GEN | |
2652 | fileinfo.st_gen != linkinfo.st_gen || | |
2653 | #endif /* HAVE_ST_GEN */ | |
2654 | fileinfo.st_nlink != linkinfo.st_nlink || | |
2655 | fileinfo.st_mode != linkinfo.st_mode) | |
2656 | { | |
2657 | /* | |
2658 | * Yes, don't allow! | |
2659 | */ | |
2660 | ||
2661 | close(fd); | |
2662 | errno = EPERM; | |
2663 | return (-1); | |
2664 | } | |
19dc16f7 | 2665 | #endif /* !_WIN32 */ |
c7017ecc MS |
2666 | |
2667 | return (fd); | |
2668 | } | |
2669 | ||
2670 | ||
ef416fc2 | 2671 | /* |
2672 | * 'cups_read()' - Read from a file descriptor. | |
2673 | */ | |
2674 | ||
2675 | static ssize_t /* O - Number of bytes read or -1 */ | |
2676 | cups_read(cups_file_t *fp, /* I - CUPS file */ | |
2677 | char *buf, /* I - Buffer */ | |
2678 | size_t bytes) /* I - Number bytes */ | |
2679 | { | |
2680 | ssize_t total; /* Total bytes read */ | |
2681 | ||
2682 | ||
807315e6 | 2683 | DEBUG_printf(("7cups_read(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST bytes)); |
634763e8 | 2684 | |
ef416fc2 | 2685 | /* |
2686 | * Loop until we read at least 0 bytes... | |
2687 | */ | |
2688 | ||
2689 | for (;;) | |
2690 | { | |
19dc16f7 | 2691 | #ifdef _WIN32 |
b86bc4cf | 2692 | if (fp->mode == 's') |
2693 | total = (ssize_t)recv(fp->fd, buf, (unsigned)bytes, 0); | |
2694 | else | |
2695 | total = (ssize_t)read(fp->fd, buf, (unsigned)bytes); | |
2696 | #else | |
ef416fc2 | 2697 | if (fp->mode == 's') |
2698 | total = recv(fp->fd, buf, bytes, 0); | |
2699 | else | |
2700 | total = read(fp->fd, buf, bytes); | |
19dc16f7 | 2701 | #endif /* _WIN32 */ |
ef416fc2 | 2702 | |
e07d4801 | 2703 | DEBUG_printf(("9cups_read: total=" CUPS_LLFMT, CUPS_LLCAST total)); |
634763e8 | 2704 | |
ef416fc2 | 2705 | if (total >= 0) |
2706 | break; | |
2707 | ||
2708 | /* | |
2709 | * Reads can be interrupted by signals and unavailable resources... | |
2710 | */ | |
2711 | ||
2712 | if (errno == EAGAIN || errno == EINTR) | |
2713 | continue; | |
2714 | else | |
2715 | return (-1); | |
2716 | } | |
2717 | ||
2718 | /* | |
2719 | * Return the total number of bytes read... | |
2720 | */ | |
2721 | ||
2722 | return (total); | |
2723 | } | |
2724 | ||
2725 | ||
2726 | /* | |
2727 | * 'cups_write()' - Write to a file descriptor. | |
2728 | */ | |
2729 | ||
2730 | static ssize_t /* O - Number of bytes written or -1 */ | |
2731 | cups_write(cups_file_t *fp, /* I - CUPS file */ | |
2732 | const char *buf, /* I - Buffer */ | |
2733 | size_t bytes) /* I - Number bytes */ | |
2734 | { | |
2abf387c | 2735 | size_t total; /* Total bytes written */ |
2736 | ssize_t count; /* Count this time */ | |
ef416fc2 | 2737 | |
2738 | ||
807315e6 | 2739 | DEBUG_printf(("7cups_write(fp=%p, buf=%p, bytes=" CUPS_LLFMT ")", (void *)fp, (void *)buf, CUPS_LLCAST bytes)); |
ecdc0628 | 2740 | |
ef416fc2 | 2741 | /* |
2742 | * Loop until all bytes are written... | |
2743 | */ | |
2744 | ||
2745 | total = 0; | |
2746 | while (bytes > 0) | |
2747 | { | |
19dc16f7 | 2748 | #ifdef _WIN32 |
b86bc4cf | 2749 | if (fp->mode == 's') |
2750 | count = (ssize_t)send(fp->fd, buf, (unsigned)bytes, 0); | |
2751 | else | |
2752 | count = (ssize_t)write(fp->fd, buf, (unsigned)bytes); | |
2753 | #else | |
ef416fc2 | 2754 | if (fp->mode == 's') |
2755 | count = send(fp->fd, buf, bytes, 0); | |
2756 | else | |
2757 | count = write(fp->fd, buf, bytes); | |
19dc16f7 | 2758 | #endif /* _WIN32 */ |
ef416fc2 | 2759 | |
e07d4801 | 2760 | DEBUG_printf(("9cups_write: count=" CUPS_LLFMT, CUPS_LLCAST count)); |
634763e8 | 2761 | |
ef416fc2 | 2762 | if (count < 0) |
2763 | { | |
2764 | /* | |
2765 | * Writes can be interrupted by signals and unavailable resources... | |
2766 | */ | |
2767 | ||
2768 | if (errno == EAGAIN || errno == EINTR) | |
2769 | continue; | |
2770 | else | |
2771 | return (-1); | |
2772 | } | |
2773 | ||
2774 | /* | |
2775 | * Update the counts for the last write call... | |
2776 | */ | |
2777 | ||
7e86f2f6 MS |
2778 | bytes -= (size_t)count; |
2779 | total += (size_t)count; | |
ef416fc2 | 2780 | buf += count; |
2781 | } | |
2782 | ||
2783 | /* | |
2784 | * Return the total number of bytes written... | |
2785 | */ | |
2786 | ||
b86bc4cf | 2787 | return ((ssize_t)total); |
ef416fc2 | 2788 | } |