1 /*
2 * PPD utilities for CUPS.
3 *
4 * Copyright 2007-2015 by Apple Inc.
5 * Copyright 1997-2006 by Easy Software Products.
6 *
7 * These coded instructions, statements, and computer programs are the
8 * property of Apple Inc. and are protected by Federal copyright
9 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
10 * which should have been included with this file. If this file is
11 * missing or damaged, see the license at "http://www.cups.org/".
12 *
13 * This file is subject to the Apple OS-Developed Software exception.
14 */
15
16 /*
17 * Include necessary headers...
18 */
19
20 #include "cups-private.h"
21 #include "ppd-private.h"
22 #include <fcntl.h>
23 #include <sys/stat.h>
24 #if defined(WIN32) || defined(__EMX__)
25 # include <io.h>
26 #else
27 # include <unistd.h>
28 #endif /* WIN32 || __EMX__ */
29
30
31 /*
32 * Local functions...
33 */
34
35 static int cups_get_printer_uri(http_t *http, const char *name,
36 char *host, int hostsize, int *port,
37 char *resource, int resourcesize,
38 int depth);
39
40
41 /*
42 * 'cupsGetPPD()' - Get the PPD file for a printer on the default server.
43 *
44 * For classes, @code cupsGetPPD@ returns the PPD file for the first printer
45 * in the class.
46 *
47 * The returned filename is stored in a static buffer and is overwritten with
48 * each call to @code cupsGetPPD@ or @link cupsGetPPD2@. The caller "owns" the
49 * file that is created and must @code unlink@ the returned filename.
50 */
51
52 const char * /* O - Filename for PPD file */
cupsGetPPD(const char * name)53 cupsGetPPD(const char *name) /* I - Destination name */
54 {
55 _ppd_globals_t *pg = _ppdGlobals(); /* Pointer to library globals */
56 time_t modtime = 0; /* Modification time */
57
58
59 /*
60 * Return the PPD file...
61 */
62
63 pg->ppd_filename[0] = '\0';
64
65 if (cupsGetPPD3(CUPS_HTTP_DEFAULT, name, &modtime, pg->ppd_filename,
66 sizeof(pg->ppd_filename)) == HTTP_STATUS_OK)
67 return (pg->ppd_filename);
68 else
69 return (NULL);
70 }
71
72
73 /*
74 * 'cupsGetPPD2()' - Get the PPD file for a printer from the specified server.
75 *
76 * For classes, @code cupsGetPPD2@ returns the PPD file for the first printer
77 * in the class.
78 *
79 * The returned filename is stored in a static buffer and is overwritten with
80 * each call to @link cupsGetPPD@ or @code cupsGetPPD2@. The caller "owns" the
81 * file that is created and must @code unlink@ the returned filename.
82 *
83 * @since CUPS 1.1.21/macOS 10.4@
84 */
85
86 const char * /* O - Filename for PPD file */
cupsGetPPD2(http_t * http,const char * name)87 cupsGetPPD2(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
88 const char *name) /* I - Destination name */
89 {
90 _ppd_globals_t *pg = _ppdGlobals(); /* Pointer to library globals */
91 time_t modtime = 0; /* Modification time */
92
93
94 pg->ppd_filename[0] = '\0';
95
96 if (cupsGetPPD3(http, name, &modtime, pg->ppd_filename,
97 sizeof(pg->ppd_filename)) == HTTP_STATUS_OK)
98 return (pg->ppd_filename);
99 else
100 return (NULL);
101 }
102
103
104 /*
105 * 'cupsGetPPD3()' - Get the PPD file for a printer on the specified
106 * server if it has changed.
107 *
108 * The "modtime" parameter contains the modification time of any
109 * locally-cached content and is updated with the time from the PPD file on
110 * the server.
111 *
112 * The "buffer" parameter contains the local PPD filename. If it contains
113 * the empty string, a new temporary file is created, otherwise the existing
114 * file will be overwritten as needed. The caller "owns" the file that is
115 * created and must @code unlink@ the returned filename.
116 *
117 * On success, @code HTTP_STATUS_OK@ is returned for a new PPD file and
118 * @code HTTP_STATUS_NOT_MODIFIED@ if the existing PPD file is up-to-date. Any other
119 * status is an error.
120 *
121 * For classes, @code cupsGetPPD3@ returns the PPD file for the first printer
122 * in the class.
123 *
124 * @since CUPS 1.4/macOS 10.6@
125 */
126
127 http_status_t /* O - HTTP status */
cupsGetPPD3(http_t * http,const char * name,time_t * modtime,char * buffer,size_t bufsize)128 cupsGetPPD3(http_t *http, /* I - HTTP connection or @code CUPS_HTTP_DEFAULT@ */
129 const char *name, /* I - Destination name */
130 time_t *modtime, /* IO - Modification time */
131 char *buffer, /* I - Filename buffer */
132 size_t bufsize) /* I - Size of filename buffer */
133 {
134 int http_port; /* Port number */
135 char http_hostname[HTTP_MAX_HOST];
136 /* Hostname associated with connection */
137 http_t *http2; /* Alternate HTTP connection */
138 int fd; /* PPD file */
139 char localhost[HTTP_MAX_URI],/* Local hostname */
140 hostname[HTTP_MAX_URI], /* Hostname */
141 resource[HTTP_MAX_URI]; /* Resource name */
142 int port; /* Port number */
143 http_status_t status; /* HTTP status from server */
144 char tempfile[1024] = ""; /* Temporary filename */
145 _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */
146
147
148 /*
149 * Range check input...
150 */
151
152 DEBUG_printf(("cupsGetPPD3(http=%p, name=\"%s\", modtime=%p(%d), buffer=%p, "
153 "bufsize=%d)", http, name, modtime,
154 modtime ? (int)*modtime : 0, buffer, (int)bufsize));
155
156 if (!name)
157 {
158 _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No printer name"), 1);
159 return (HTTP_STATUS_NOT_ACCEPTABLE);
160 }
161
162 if (!modtime)
163 {
164 _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No modification time"), 1);
165 return (HTTP_STATUS_NOT_ACCEPTABLE);
166 }
167
168 if (!buffer || bufsize <= 1)
169 {
170 _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Bad filename buffer"), 1);
171 return (HTTP_STATUS_NOT_ACCEPTABLE);
172 }
173
174 #ifndef WIN32
175 /*
176 * See if the PPD file is available locally...
177 */
178
179 if (http)
180 httpGetHostname(http, hostname, sizeof(hostname));
181 else
182 {
183 strlcpy(hostname, cupsServer(), sizeof(hostname));
184 if (hostname[0] == '/')
185 strlcpy(hostname, "localhost", sizeof(hostname));
186 }
187
188 if (!_cups_strcasecmp(hostname, "localhost"))
189 {
190 char ppdname[1024]; /* PPD filename */
191 struct stat ppdinfo; /* PPD file information */
192
193
194 snprintf(ppdname, sizeof(ppdname), "%s/ppd/%s.ppd", cg->cups_serverroot,
195 name);
196 if (!stat(ppdname, &ppdinfo) && !access(ppdname, R_OK))
197 {
198 /*
199 * OK, the file exists and is readable, use it!
200 */
201
202 if (buffer[0])
203 {
204 unlink(buffer);
205
206 if (symlink(ppdname, buffer) && errno != EEXIST)
207 {
208 _cupsSetError(IPP_STATUS_ERROR_INTERNAL, NULL, 0);
209
210 return (HTTP_STATUS_SERVER_ERROR);
211 }
212 }
213 else
214 {
215 int tries; /* Number of tries */
216 const char *tmpdir; /* TMPDIR environment variable */
217 struct timeval curtime; /* Current time */
218
219 /*
220 * Previously we put root temporary files in the default CUPS temporary
221 * directory under /var/spool/cups. However, since the scheduler cleans
222 * out temporary files there and runs independently of the user apps, we
223 * don't want to use it unless specifically told to by cupsd.
224 */
225
226 if ((tmpdir = getenv("TMPDIR")) == NULL)
227 # ifdef __APPLE__
228 tmpdir = "/private/tmp"; /* /tmp is a symlink to /private/tmp */
229 # else
230 tmpdir = "/tmp";
231 # endif /* __APPLE__ */
232
233 /*
234 * Make the temporary name using the specified directory...
235 */
236
237 tries = 0;
238
239 do
240 {
241 /*
242 * Get the current time of day...
243 */
244
245 gettimeofday(&curtime, NULL);
246
247 /*
248 * Format a string using the hex time values...
249 */
250
251 snprintf(buffer, bufsize, "%s/%08lx%05lx", tmpdir,
252 (unsigned long)curtime.tv_sec,
253 (unsigned long)curtime.tv_usec);
254
255 /*
256 * Try to make a symlink...
257 */
258
259 if (!symlink(ppdname, buffer))
260 break;
261
262 tries ++;
263 }
264 while (tries < 1000);
265
266 if (tries >= 1000)
267 {
268 _cupsSetError(IPP_STATUS_ERROR_INTERNAL, NULL, 0);
269
270 return (HTTP_STATUS_SERVER_ERROR);
271 }
272 }
273
274 if (*modtime >= ppdinfo.st_mtime)
275 return (HTTP_STATUS_NOT_MODIFIED);
276 else
277 {
278 *modtime = ppdinfo.st_mtime;
279 return (HTTP_STATUS_OK);
280 }
281 }
282 }
283 #endif /* !WIN32 */
284
285 /*
286 * Try finding a printer URI for this printer...
287 */
288
289 if (!http)
290 if ((http = _cupsConnect()) == NULL)
291 return (HTTP_STATUS_SERVICE_UNAVAILABLE);
292
293 if (!cups_get_printer_uri(http, name, hostname, sizeof(hostname), &port,
294 resource, sizeof(resource), 0))
295 return (HTTP_STATUS_NOT_FOUND);
296
297 DEBUG_printf(("2cupsGetPPD3: Printer hostname=\"%s\", port=%d", hostname,
298 port));
299
300 if (cupsServer()[0] == '/' && !_cups_strcasecmp(hostname, "localhost") && port == ippPort())
301 {
302 /*
303 * Redirect localhost to domain socket...
304 */
305
306 strlcpy(hostname, cupsServer(), sizeof(hostname));
307 port = 0;
308
309 DEBUG_printf(("2cupsGetPPD3: Redirecting to \"%s\".", hostname));
310 }
311
312 /*
313 * Remap local hostname to localhost...
314 */
315
316 httpGetHostname(NULL, localhost, sizeof(localhost));
317
318 DEBUG_printf(("2cupsGetPPD3: Local hostname=\"%s\"", localhost));
319
320 if (!_cups_strcasecmp(localhost, hostname))
321 strlcpy(hostname, "localhost", sizeof(hostname));
322
323 /*
324 * Get the hostname and port number we are connected to...
325 */
326
327 httpGetHostname(http, http_hostname, sizeof(http_hostname));
328 http_port = httpAddrPort(http->hostaddr);
329
330 DEBUG_printf(("2cupsGetPPD3: Connection hostname=\"%s\", port=%d",
331 http_hostname, http_port));
332
333 /*
334 * Reconnect to the correct server as needed...
335 */
336
337 if (!_cups_strcasecmp(http_hostname, hostname) && port == http_port)
338 http2 = http;
339 else if ((http2 = httpConnect2(hostname, port, NULL, AF_UNSPEC,
340 cupsEncryption(), 1, 30000, NULL)) == NULL)
341 {
342 DEBUG_puts("1cupsGetPPD3: Unable to connect to server");
343
344 return (HTTP_STATUS_SERVICE_UNAVAILABLE);
345 }
346
347 /*
348 * Get a temp file...
349 */
350
351 if (buffer[0])
352 fd = open(buffer, O_CREAT | O_TRUNC | O_WRONLY, 0600);
353 else
354 fd = cupsTempFd(tempfile, sizeof(tempfile));
355
356 if (fd < 0)
357 {
358 /*
359 * Can't open file; close the server connection and return NULL...
360 */
361
362 _cupsSetError(IPP_STATUS_ERROR_INTERNAL, NULL, 0);
363
364 if (http2 != http)
365 httpClose(http2);
366
367 return (HTTP_STATUS_SERVER_ERROR);
368 }
369
370 /*
371 * And send a request to the HTTP server...
372 */
373
374 strlcat(resource, ".ppd", sizeof(resource));
375
376 if (*modtime > 0)
377 httpSetField(http2, HTTP_FIELD_IF_MODIFIED_SINCE,
378 httpGetDateString(*modtime));
379
380 status = cupsGetFd(http2, resource, fd);
381
382 close(fd);
383
384 /*
385 * See if we actually got the file or an error...
386 */
387
388 if (status == HTTP_STATUS_OK)
389 {
390 *modtime = httpGetDateTime(httpGetField(http2, HTTP_FIELD_DATE));
391
392 if (tempfile[0])
393 strlcpy(buffer, tempfile, bufsize);
394 }
395 else if (status != HTTP_STATUS_NOT_MODIFIED)
396 {
397 _cupsSetHTTPError(status);
398
399 if (buffer[0])
400 unlink(buffer);
401 else if (tempfile[0])
402 unlink(tempfile);
403 }
404 else if (tempfile[0])
405 unlink(tempfile);
406
407 if (http2 != http)
408 httpClose(http2);
409
410 /*
411 * Return the PPD file...
412 */
413
414 DEBUG_printf(("1cupsGetPPD3: Returning status %d", status));
415
416 return (status);
417 }
418
419
420 /*
421 * 'cupsGetServerPPD()' - Get an available PPD file from the server.
422 *
423 * This function returns the named PPD file from the server. The
424 * list of available PPDs is provided by the IPP @code CUPS_GET_PPDS@
425 * operation.
426 *
427 * You must remove (unlink) the PPD file when you are finished with
428 * it. The PPD filename is stored in a static location that will be
429 * overwritten on the next call to @link cupsGetPPD@, @link cupsGetPPD2@,
430 * or @link cupsGetServerPPD@.
431 *
432 * @since CUPS 1.3/macOS 10.5@
433 */
434
435 char * /* O - Name of PPD file or @code NULL@ on error */
cupsGetServerPPD(http_t * http,const char * name)436 cupsGetServerPPD(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
437 const char *name) /* I - Name of PPD file ("ppd-name") */
438 {
439 int fd; /* PPD file descriptor */
440 ipp_t *request; /* IPP request */
441 _ppd_globals_t *pg = _ppdGlobals();
442 /* Pointer to library globals */
443
444
445 /*
446 * Range check input...
447 */
448
449 if (!name)
450 {
451 _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No PPD name"), 1);
452
453 return (NULL);
454 }
455
456 if (!http)
457 if ((http = _cupsConnect()) == NULL)
458 return (NULL);
459
460 /*
461 * Get a temp file...
462 */
463
464 if ((fd = cupsTempFd(pg->ppd_filename, sizeof(pg->ppd_filename))) < 0)
465 {
466 /*
467 * Can't open file; close the server connection and return NULL...
468 */
469
470 _cupsSetError(IPP_STATUS_ERROR_INTERNAL, NULL, 0);
471
472 return (NULL);
473 }
474
475 /*
476 * Get the PPD file...
477 */
478
479 request = ippNewRequest(IPP_OP_CUPS_GET_PPD);
480 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "ppd-name", NULL,
481 name);
482
483 ippDelete(cupsDoIORequest(http, request, "/", -1, fd));
484
485 close(fd);
486
487 if (cupsLastError() != IPP_STATUS_OK)
488 {
489 unlink(pg->ppd_filename);
490 return (NULL);
491 }
492 else
493 return (pg->ppd_filename);
494 }
495
496
497 /*
498 * 'cups_get_printer_uri()' - Get the printer-uri-supported attribute for the
499 * first printer in a class.
500 */
501
502 static int /* O - 1 on success, 0 on failure */
cups_get_printer_uri(http_t * http,const char * name,char * host,int hostsize,int * port,char * resource,int resourcesize,int depth)503 cups_get_printer_uri(
504 http_t *http, /* I - Connection to server */
505 const char *name, /* I - Name of printer or class */
506 char *host, /* I - Hostname buffer */
507 int hostsize, /* I - Size of hostname buffer */
508 int *port, /* O - Port number */
509 char *resource, /* I - Resource buffer */
510 int resourcesize, /* I - Size of resource buffer */
511 int depth) /* I - Depth of query */
512 {
513 int i; /* Looping var */
514 int http_port; /* Port number */
515 http_t *http2; /* Alternate HTTP connection */
516 ipp_t *request, /* IPP request */
517 *response; /* IPP response */
518 ipp_attribute_t *attr; /* Current attribute */
519 char uri[HTTP_MAX_URI], /* printer-uri attribute */
520 scheme[HTTP_MAX_URI], /* Scheme name */
521 username[HTTP_MAX_URI], /* Username:password */
522 classname[255], /* Temporary class name */
523 http_hostname[HTTP_MAX_HOST];
524 /* Hostname associated with connection */
525 static const char * const requested_attrs[] =
526 { /* Requested attributes */
527 "device-uri",
528 "member-uris",
529 "printer-uri-supported",
530 "printer-type"
531 };
532
533
534 DEBUG_printf(("4cups_get_printer_uri(http=%p, name=\"%s\", host=%p, hostsize=%d, resource=%p, resourcesize=%d, depth=%d)", http, name, host, hostsize, resource, resourcesize, depth));
535
536 /*
537 * Setup the printer URI...
538 */
539
540 if (httpAssembleURIf(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL, "localhost", 0, "/printers/%s", name) < HTTP_URI_STATUS_OK)
541 {
542 _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to create printer-uri"), 1);
543
544 *host = '\0';
545 *resource = '\0';
546
547 return (0);
548 }
549
550 DEBUG_printf(("5cups_get_printer_uri: printer-uri=\"%s\"", uri));
551
552 /*
553 * Get the hostname and port number we are connected to...
554 */
555
556 httpGetHostname(http, http_hostname, sizeof(http_hostname));
557 http_port = httpAddrPort(http->hostaddr);
558
559 DEBUG_printf(("5cups_get_printer_uri: http_hostname=\"%s\"", http_hostname));
560
561 /*
562 * Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the following
563 * attributes:
564 *
565 * attributes-charset
566 * attributes-natural-language
567 * printer-uri
568 * requested-attributes
569 */
570
571 request = ippNewRequest(IPP_OP_GET_PRINTER_ATTRIBUTES);
572
573 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
574
575 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD, "requested-attributes", sizeof(requested_attrs) / sizeof(requested_attrs[0]), NULL, requested_attrs);
576
577 /*
578 * Do the request and get back a response...
579 */
580
581 snprintf(resource, (size_t)resourcesize, "/printers/%s", name);
582
583 if ((response = cupsDoRequest(http, request, resource)) != NULL)
584 {
585 const char *device_uri = NULL; /* device-uri value */
586
587 if ((attr = ippFindAttribute(response, "device-uri", IPP_TAG_URI)) != NULL)
588 {
589 device_uri = attr->values[0].string.text;
590 DEBUG_printf(("5cups_get_printer_uri: device-uri=\"%s\"", device_uri));
591 }
592
593 if (device_uri &&
594 (((!strncmp(device_uri, "ipp://", 6) || !strncmp(device_uri, "ipps://", 7)) &&
595 (strstr(device_uri, "/printers/") != NULL || strstr(device_uri, "/classes/") != NULL)) ||
596 ((strstr(device_uri, "._ipp.") != NULL || strstr(device_uri, "._ipps.") != NULL) &&
597 !strcmp(device_uri + strlen(device_uri) - 5, "/cups"))))
598 {
599 /*
600 * Statically-configured shared printer.
601 */
602
603 httpSeparateURI(HTTP_URI_CODING_ALL, _httpResolveURI(device_uri, uri, sizeof(uri), _HTTP_RESOLVE_DEFAULT, NULL, NULL), scheme, sizeof(scheme), username, sizeof(username), host, hostsize, port, resource, resourcesize);
604 ippDelete(response);
605
606 DEBUG_printf(("5cups_get_printer_uri: Resolved to host=\"%s\", port=%d, resource=\"%s\"", host, *port, resource));
607 return (1);
608 }
609 else if ((attr = ippFindAttribute(response, "member-uris", IPP_TAG_URI)) != NULL)
610 {
611 /*
612 * Get the first actual printer name in the class...
613 */
614
615 DEBUG_printf(("5cups_get_printer_uri: Got member-uris with %d values.", ippGetCount(attr)));
616
617 for (i = 0; i < attr->num_values; i ++)
618 {
619 DEBUG_printf(("5cups_get_printer_uri: member-uris[%d]=\"%s\"", i, ippGetString(attr, i, NULL)));
620
621 httpSeparateURI(HTTP_URI_CODING_ALL, attr->values[i].string.text, scheme, sizeof(scheme), username, sizeof(username), host, hostsize, port, resource, resourcesize);
622 if (!strncmp(resource, "/printers/", 10))
623 {
624 /*
625 * Found a printer!
626 */
627
628 ippDelete(response);
629
630 DEBUG_printf(("5cups_get_printer_uri: Found printer member with host=\"%s\", port=%d, resource=\"%s\"", host, *port, resource));
631 return (1);
632 }
633 }
634
635 /*
636 * No printers in this class - try recursively looking for a printer,
637 * but not more than 3 levels deep...
638 */
639
640 if (depth < 3)
641 {
642 for (i = 0; i < attr->num_values; i ++)
643 {
644 httpSeparateURI(HTTP_URI_CODING_ALL, attr->values[i].string.text,
645 scheme, sizeof(scheme), username, sizeof(username),
646 host, hostsize, port, resource, resourcesize);
647 if (!strncmp(resource, "/classes/", 9))
648 {
649 /*
650 * Found a class! Connect to the right server...
651 */
652
653 if (!_cups_strcasecmp(http_hostname, host) && *port == http_port)
654 http2 = http;
655 else if ((http2 = httpConnect2(host, *port, NULL, AF_UNSPEC, cupsEncryption(), 1, 30000, NULL)) == NULL)
656 {
657 DEBUG_puts("8cups_get_printer_uri: Unable to connect to server");
658
659 continue;
660 }
661
662 /*
663 * Look up printers on that server...
664 */
665
666 strlcpy(classname, resource + 9, sizeof(classname));
667
668 cups_get_printer_uri(http2, classname, host, hostsize, port,
669 resource, resourcesize, depth + 1);
670
671 /*
672 * Close the connection as needed...
673 */
674
675 if (http2 != http)
676 httpClose(http2);
677
678 if (*host)
679 return (1);
680 }
681 }
682 }
683 }
684 else if ((attr = ippFindAttribute(response, "printer-uri-supported", IPP_TAG_URI)) != NULL)
685 {
686 httpSeparateURI(HTTP_URI_CODING_ALL, _httpResolveURI(attr->values[0].string.text, uri, sizeof(uri), _HTTP_RESOLVE_DEFAULT, NULL, NULL), scheme, sizeof(scheme), username, sizeof(username), host, hostsize, port, resource, resourcesize);
687 ippDelete(response);
688
689 DEBUG_printf(("5cups_get_printer_uri: Resolved to host=\"%s\", port=%d, resource=\"%s\"", host, *port, resource));
690
691 if (!strncmp(resource, "/classes/", 9))
692 {
693 _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No printer-uri found for class"), 1);
694
695 *host = '\0';
696 *resource = '\0';
697
698 DEBUG_puts("5cups_get_printer_uri: Not returning class.");
699 return (0);
700 }
701
702 return (1);
703 }
704
705 ippDelete(response);
706 }
707
708 if (cupsLastError() != IPP_STATUS_ERROR_NOT_FOUND)
709 _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No printer-uri found"), 1);
710
711 *host = '\0';
712 *resource = '\0';
713
714 DEBUG_puts("5cups_get_printer_uri: Printer URI not found.");
715 return (0);
716 }
717