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89d46774 | 1 | /* |
bc44d920 | 2 | * "$Id: snmp.c 6649 2007-07-11 21:46:42Z mike $" |
89d46774 | 3 | * |
4 | * SNMP discovery backend for the Common UNIX Printing System (CUPS). | |
5 | * | |
91c84a35 | 6 | * Copyright 2007-2008 by Apple Inc. |
c0e1af83 | 7 | * Copyright 2006-2007 by Easy Software Products, all rights reserved. |
89d46774 | 8 | * |
9 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 10 | * property of Apple Inc. and are protected by Federal copyright |
11 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
89d46774 | 12 | * "LICENSE" which should have been included with this file. If this |
bc44d920 | 13 | * file is missing or damaged, see the license at "http://www.cups.org/". |
89d46774 | 14 | * |
15 | * This file is subject to the Apple OS-Developed Software exception. | |
16 | * | |
17 | * Contents: | |
18 | * | |
19 | * main() - Discover printers via SNMP. | |
20 | * add_array() - Add a string to an array. | |
21 | * add_cache() - Add a cached device... | |
b94498cf | 22 | * add_device_uri() - Add a device URI to the cache. |
89d46774 | 23 | * alarm_handler() - Handle alarm signals... |
89d46774 | 24 | * compare_cache() - Compare two cache entries. |
25 | * debug_printf() - Display some debugging information. | |
26 | * fix_make_model() - Fix common problems in the make-and-model | |
27 | * string. | |
28 | * free_array() - Free an array of strings. | |
29 | * free_cache() - Free the array of cached devices. | |
91c84a35 MS |
30 | * get_interface_addresses() - Get the broadcast address(es) associated with |
31 | * an interface. | |
d09495fa | 32 | * list_device() - List a device we found... |
89d46774 | 33 | * password_cb() - Handle authentication requests. |
34 | * probe_device() - Probe a device to discover whether it is a | |
35 | * printer. | |
36 | * read_snmp_conf() - Read the snmp.conf file. | |
37 | * read_snmp_response() - Read and parse a SNMP response... | |
38 | * run_time() - Return the total running time... | |
39 | * scan_devices() - Scan for devices using SNMP. | |
89d46774 | 40 | * try_connect() - Try connecting on a port... |
41 | * update_cache() - Update a cached device... | |
42 | */ | |
43 | ||
44 | /* | |
45 | * Include necessary headers. | |
46 | */ | |
47 | ||
ed486911 | 48 | #include "backend-private.h" |
89d46774 | 49 | #include <cups/array.h> |
50 | #include <cups/file.h> | |
91c84a35 | 51 | #include <cups/http-private.h> |
b94498cf | 52 | #include <regex.h> |
89d46774 | 53 | |
54 | ||
55 | /* | |
56 | * This backend implements SNMP printer discovery. It uses a broadcast- | |
b94498cf | 57 | * based approach to get SNMP response packets from potential printers, |
7a14d768 MS |
58 | * requesting OIDs from the Host and Port Monitor MIBs, does a URI |
59 | * lookup based on the device description string, and finally a probe of | |
60 | * port 9100 (AppSocket) and 515 (LPD). | |
89d46774 | 61 | * |
62 | * The current focus is on printers with internal network cards, although | |
7a14d768 | 63 | * the code also works with many external print servers as well. |
89d46774 | 64 | * |
65 | * The backend reads the snmp.conf file from the CUPS_SERVERROOT directory | |
66 | * which can contain comments, blank lines, or any number of the following | |
67 | * directives: | |
68 | * | |
69 | * Address ip-address | |
70 | * Address @LOCAL | |
71 | * Address @IF(name) | |
72 | * Community name | |
73 | * DebugLevel N | |
b94498cf | 74 | * DeviceURI "regex pattern" uri |
89d46774 | 75 | * HostNameLookups on |
76 | * HostNameLookups off | |
b94498cf | 77 | * MaxRunTime N |
89d46774 | 78 | * |
79 | * The default is to use: | |
80 | * | |
81 | * Address @LOCAL | |
82 | * Community public | |
83 | * DebugLevel 0 | |
84 | * HostNameLookups off | |
ae71f5de | 85 | * MaxRunTime 120 |
89d46774 | 86 | * |
87 | * This backend is known to work with the following network printers and | |
88 | * print servers: | |
89 | * | |
90 | * Axis OfficeBasic, 5400, 5600 | |
7a14d768 | 91 | * Brother |
89d46774 | 92 | * EPSON |
93 | * Genicom | |
94 | * HP JetDirect | |
95 | * Lexmark | |
96 | * Sharp | |
97 | * Tektronix | |
98 | * Xerox | |
99 | * | |
100 | * It does not currently work with: | |
101 | * | |
102 | * DLink | |
103 | * Linksys | |
104 | * Netgear | |
105 | * Okidata | |
106 | * | |
107 | * (for all of these, they do not support the Host MIB) | |
108 | */ | |
109 | ||
89d46774 | 110 | /* |
111 | * Types... | |
112 | */ | |
113 | ||
b94498cf | 114 | typedef struct device_uri_s /**** DeviceURI values ****/ |
115 | { | |
116 | regex_t re; /* Regular expression to match */ | |
117 | cups_array_t *uris; /* URIs */ | |
118 | } device_uri_t; | |
119 | ||
89d46774 | 120 | typedef struct snmp_cache_s /**** SNMP scan cache ****/ |
121 | { | |
122 | http_addr_t address; /* Address of device */ | |
123 | char *addrname, /* Name of device */ | |
124 | *uri, /* device-uri */ | |
125 | *id, /* device-id */ | |
7a14d768 | 126 | *info, /* device-info */ |
89d46774 | 127 | *make_and_model; /* device-make-and-model */ |
128 | } snmp_cache_t; | |
129 | ||
89d46774 | 130 | |
d09495fa | 131 | /* |
132 | * Private CUPS API to set the last error... | |
133 | */ | |
134 | ||
7a14d768 | 135 | extern void _cupsSetError(ipp_status_t status, const char *message); |
d09495fa | 136 | |
137 | ||
89d46774 | 138 | /* |
139 | * Local functions... | |
140 | */ | |
141 | ||
142 | static char *add_array(cups_array_t *a, const char *s); | |
143 | static void add_cache(http_addr_t *addr, const char *addrname, | |
144 | const char *uri, const char *id, | |
145 | const char *make_and_model); | |
b94498cf | 146 | static device_uri_t *add_device_uri(char *value); |
89d46774 | 147 | static void alarm_handler(int sig); |
89d46774 | 148 | static int compare_cache(snmp_cache_t *a, snmp_cache_t *b); |
149 | static void debug_printf(const char *format, ...); | |
150 | static void fix_make_model(char *make_model, | |
151 | const char *old_make_model, | |
152 | int make_model_size); | |
153 | static void free_array(cups_array_t *a); | |
154 | static void free_cache(void); | |
155 | static http_addrlist_t *get_interface_addresses(const char *ifname); | |
d09495fa | 156 | static void list_device(snmp_cache_t *cache); |
89d46774 | 157 | static const char *password_cb(const char *prompt); |
158 | static void probe_device(snmp_cache_t *device); | |
159 | static void read_snmp_conf(const char *address); | |
160 | static void read_snmp_response(int fd); | |
161 | static double run_time(void); | |
162 | static void scan_devices(int fd); | |
89d46774 | 163 | static int try_connect(http_addr_t *addr, const char *addrname, |
164 | int port); | |
165 | static void update_cache(snmp_cache_t *device, const char *uri, | |
166 | const char *id, const char *make_model); | |
167 | ||
168 | ||
169 | /* | |
170 | * Local globals... | |
171 | */ | |
172 | ||
173 | static cups_array_t *Addresses = NULL; | |
174 | static cups_array_t *Communities = NULL; | |
175 | static cups_array_t *Devices = NULL; | |
176 | static int DebugLevel = 0; | |
7a14d768 | 177 | static const int DeviceDescOID[] = { CUPS_OID_hrDeviceDescr, 1, -1 }; |
89d46774 | 178 | static unsigned DeviceDescRequest; |
7a14d768 | 179 | static const int DeviceTypeOID[] = { CUPS_OID_hrDeviceType, 1, -1 }; |
b94498cf | 180 | static unsigned DeviceTypeRequest; |
7a14d768 MS |
181 | static const int DeviceIdOID[] = { CUPS_OID_ppmPrinterIEEE1284DeviceId, 1, -1 }; |
182 | static unsigned DeviceIdRequest; | |
183 | static const int DeviceUriOID[] = { CUPS_OID_ppmPortServiceNameOrURI, 1, 1, -1 }; | |
184 | static unsigned DeviceUriRequest; | |
b94498cf | 185 | static cups_array_t *DeviceURIs = NULL; |
89d46774 | 186 | static int HostNameLookups = 0; |
ae71f5de | 187 | static int MaxRunTime = 120; |
89d46774 | 188 | static struct timeval StartTime; |
189 | ||
190 | ||
191 | /* | |
192 | * 'main()' - Discover printers via SNMP. | |
193 | */ | |
194 | ||
195 | int /* O - Exit status */ | |
196 | main(int argc, /* I - Number of command-line arguments (6 or 7) */ | |
197 | char *argv[]) /* I - Command-line arguments */ | |
198 | { | |
199 | int fd; /* SNMP socket */ | |
d09495fa | 200 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) |
201 | struct sigaction action; /* Actions for POSIX signals */ | |
202 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
89d46774 | 203 | |
204 | ||
205 | /* | |
206 | * Check command-line options... | |
207 | */ | |
208 | ||
209 | if (argc > 2) | |
210 | { | |
c0e1af83 | 211 | fputs(_("Usage: snmp [host-or-ip-address]\n"), stderr); |
89d46774 | 212 | return (1); |
213 | } | |
214 | ||
215 | /* | |
216 | * Set the password callback for IPP operations... | |
217 | */ | |
218 | ||
219 | cupsSetPasswordCB(password_cb); | |
220 | ||
d09495fa | 221 | /* |
222 | * Catch SIGALRM signals... | |
223 | */ | |
224 | ||
225 | #ifdef HAVE_SIGSET | |
226 | sigset(SIGALRM, alarm_handler); | |
227 | #elif defined(HAVE_SIGACTION) | |
228 | memset(&action, 0, sizeof(action)); | |
229 | ||
230 | sigemptyset(&action.sa_mask); | |
231 | sigaddset(&action.sa_mask, SIGALRM); | |
232 | action.sa_handler = alarm_handler; | |
233 | sigaction(SIGALRM, &action, NULL); | |
234 | #else | |
235 | signal(SIGALRM, alarm_handler); | |
236 | #endif /* HAVE_SIGSET */ | |
237 | ||
89d46774 | 238 | /* |
239 | * Open the SNMP socket... | |
240 | */ | |
241 | ||
7a14d768 | 242 | if ((fd = _cupsSNMPOpen(AF_INET)) < 0) |
89d46774 | 243 | return (1); |
244 | ||
245 | /* | |
246 | * Read the configuration file and any cache data... | |
247 | */ | |
248 | ||
249 | read_snmp_conf(argv[1]); | |
250 | ||
7a14d768 | 251 | _cupsSNMPSetDebug(DebugLevel); |
91c84a35 | 252 | |
89d46774 | 253 | Devices = cupsArrayNew((cups_array_func_t)compare_cache, NULL); |
254 | ||
255 | /* | |
256 | * Scan for devices... | |
257 | */ | |
258 | ||
259 | scan_devices(fd); | |
260 | ||
89d46774 | 261 | /* |
262 | * Close, free, and return with no errors... | |
263 | */ | |
264 | ||
7a14d768 | 265 | _cupsSNMPClose(fd); |
89d46774 | 266 | |
267 | free_array(Addresses); | |
268 | free_array(Communities); | |
269 | free_cache(); | |
270 | ||
271 | return (0); | |
272 | } | |
273 | ||
274 | ||
275 | /* | |
276 | * 'add_array()' - Add a string to an array. | |
277 | */ | |
278 | ||
279 | static char * /* O - New string */ | |
280 | add_array(cups_array_t *a, /* I - Array */ | |
281 | const char *s) /* I - String to add */ | |
282 | { | |
283 | char *dups; /* New string */ | |
284 | ||
285 | ||
286 | dups = strdup(s); | |
287 | ||
288 | cupsArrayAdd(a, dups); | |
289 | ||
290 | return (dups); | |
291 | } | |
292 | ||
293 | ||
294 | /* | |
295 | * 'add_cache()' - Add a cached device... | |
296 | */ | |
297 | ||
298 | static void | |
299 | add_cache(http_addr_t *addr, /* I - Device IP address */ | |
300 | const char *addrname, /* I - IP address or name string */ | |
301 | const char *uri, /* I - Device URI */ | |
302 | const char *id, /* I - 1284 device ID */ | |
303 | const char *make_and_model) /* I - Make and model */ | |
304 | { | |
305 | snmp_cache_t *temp; /* New device entry */ | |
306 | ||
307 | ||
308 | debug_printf("DEBUG: add_cache(addr=%p, addrname=\"%s\", uri=\"%s\", " | |
309 | "id=\"%s\", make_and_model=\"%s\")\n", | |
d09495fa | 310 | addr, addrname, uri ? uri : "(null)", id ? id : "(null)", |
89d46774 | 311 | make_and_model ? make_and_model : "(null)"); |
312 | ||
313 | temp = calloc(1, sizeof(snmp_cache_t)); | |
314 | memcpy(&(temp->address), addr, sizeof(temp->address)); | |
315 | ||
316 | temp->addrname = strdup(addrname); | |
317 | ||
318 | if (uri) | |
319 | temp->uri = strdup(uri); | |
320 | ||
321 | if (id) | |
322 | temp->id = strdup(id); | |
323 | ||
324 | if (make_and_model) | |
325 | temp->make_and_model = strdup(make_and_model); | |
326 | ||
327 | cupsArrayAdd(Devices, temp); | |
d09495fa | 328 | |
329 | if (uri) | |
330 | list_device(temp); | |
89d46774 | 331 | } |
332 | ||
333 | ||
b94498cf | 334 | /* |
335 | * 'add_device_uri()' - Add a device URI to the cache. | |
336 | * | |
337 | * The value string is modified (chopped up) as needed. | |
338 | */ | |
339 | ||
340 | static device_uri_t * /* O - Device URI */ | |
341 | add_device_uri(char *value) /* I - Value from snmp.conf */ | |
342 | { | |
343 | device_uri_t *device_uri; /* Device URI */ | |
344 | char *start; /* Start of value */ | |
345 | ||
346 | ||
347 | /* | |
348 | * Allocate memory as needed... | |
349 | */ | |
350 | ||
351 | if (!DeviceURIs) | |
352 | DeviceURIs = cupsArrayNew(NULL, NULL); | |
353 | ||
354 | if (!DeviceURIs) | |
355 | return (NULL); | |
356 | ||
357 | if ((device_uri = calloc(1, sizeof(device_uri_t))) == NULL) | |
358 | return (NULL); | |
359 | ||
360 | if ((device_uri->uris = cupsArrayNew(NULL, NULL)) == NULL) | |
361 | { | |
362 | free(device_uri); | |
363 | return (NULL); | |
364 | } | |
365 | ||
366 | /* | |
367 | * Scan the value string for the regular expression and URI(s)... | |
368 | */ | |
369 | ||
370 | value ++; /* Skip leading " */ | |
371 | ||
372 | for (start = value; *value && *value != '\"'; value ++) | |
373 | if (*value == '\\' && value[1]) | |
374 | _cups_strcpy(value, value + 1); | |
375 | ||
376 | if (!*value) | |
377 | { | |
378 | fputs("ERROR: Missing end quote for DeviceURI!\n", stderr); | |
379 | ||
380 | cupsArrayDelete(device_uri->uris); | |
381 | free(device_uri); | |
382 | ||
383 | return (NULL); | |
384 | } | |
385 | ||
386 | *value++ = '\0'; | |
387 | ||
388 | if (regcomp(&(device_uri->re), start, REG_EXTENDED | REG_ICASE)) | |
389 | { | |
390 | fputs("ERROR: Bad regular expression for DeviceURI!\n", stderr); | |
391 | ||
392 | cupsArrayDelete(device_uri->uris); | |
393 | free(device_uri); | |
394 | ||
395 | return (NULL); | |
396 | } | |
397 | ||
398 | while (*value) | |
399 | { | |
400 | while (isspace(*value & 255)) | |
401 | value ++; | |
402 | ||
403 | if (!*value) | |
404 | break; | |
405 | ||
406 | for (start = value; *value && !isspace(*value & 255); value ++); | |
407 | ||
408 | if (*value) | |
409 | *value++ = '\0'; | |
410 | ||
411 | cupsArrayAdd(device_uri->uris, strdup(start)); | |
412 | } | |
413 | ||
414 | /* | |
415 | * Add the device URI to the list and return it... | |
416 | */ | |
417 | ||
418 | cupsArrayAdd(DeviceURIs, device_uri); | |
419 | ||
420 | return (device_uri); | |
421 | } | |
422 | ||
423 | ||
89d46774 | 424 | /* |
425 | * 'alarm_handler()' - Handle alarm signals... | |
426 | */ | |
427 | ||
428 | static void | |
429 | alarm_handler(int sig) /* I - Signal number */ | |
430 | { | |
431 | /* | |
432 | * Do nothing... | |
433 | */ | |
434 | ||
435 | (void)sig; | |
436 | ||
d09495fa | 437 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) |
438 | signal(SIGALRM, alarm_handler); | |
439 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
440 | ||
89d46774 | 441 | if (DebugLevel) |
442 | write(2, "DEBUG: ALARM!\n", 14); | |
443 | } | |
444 | ||
445 | ||
89d46774 | 446 | /* |
447 | * 'compare_cache()' - Compare two cache entries. | |
448 | */ | |
449 | ||
450 | static int /* O - Result of comparison */ | |
451 | compare_cache(snmp_cache_t *a, /* I - First cache entry */ | |
452 | snmp_cache_t *b) /* I - Second cache entry */ | |
453 | { | |
8ca02f3c | 454 | return (strcasecmp(a->addrname, b->addrname)); |
89d46774 | 455 | } |
456 | ||
457 | ||
458 | /* | |
459 | * 'debug_printf()' - Display some debugging information. | |
460 | */ | |
461 | ||
462 | static void | |
463 | debug_printf(const char *format, /* I - Printf-style format string */ | |
464 | ...) /* I - Additional arguments as needed */ | |
465 | { | |
466 | va_list ap; /* Pointer to arguments */ | |
467 | ||
468 | ||
469 | if (!DebugLevel) | |
470 | return; | |
471 | ||
472 | va_start(ap, format); | |
473 | vfprintf(stderr, format, ap); | |
474 | va_end(ap); | |
475 | } | |
476 | ||
477 | ||
478 | /* | |
479 | * 'fix_make_model()' - Fix common problems in the make-and-model string. | |
480 | */ | |
481 | ||
482 | static void | |
483 | fix_make_model( | |
484 | char *make_model, /* I - New make-and-model string */ | |
485 | const char *old_make_model, /* I - Old make-and-model string */ | |
486 | int make_model_size) /* I - Size of new string buffer */ | |
487 | { | |
a74454a7 | 488 | char *mmptr; /* Pointer into make-and-model string */ |
89d46774 | 489 | |
490 | ||
491 | /* | |
492 | * Fix some common problems with the make-and-model string so | |
493 | * that printer driver detection works better... | |
494 | */ | |
495 | ||
496 | if (!strncasecmp(old_make_model, "Hewlett-Packard", 15)) | |
497 | { | |
498 | /* | |
499 | * Strip leading Hewlett-Packard and hp prefixes and replace | |
500 | * with a single HP manufacturer prefix... | |
501 | */ | |
502 | ||
a74454a7 | 503 | mmptr = (char *)old_make_model + 15; |
89d46774 | 504 | |
505 | while (isspace(*mmptr & 255)) | |
506 | mmptr ++; | |
507 | ||
508 | if (!strncasecmp(mmptr, "hp", 2)) | |
509 | { | |
510 | mmptr += 2; | |
511 | ||
512 | while (isspace(*mmptr & 255)) | |
513 | mmptr ++; | |
514 | } | |
515 | ||
516 | make_model[0] = 'H'; | |
517 | make_model[1] = 'P'; | |
518 | make_model[2] = ' '; | |
519 | strlcpy(make_model + 3, mmptr, make_model_size - 3); | |
520 | } | |
521 | else if (!strncasecmp(old_make_model, "deskjet", 7)) | |
522 | snprintf(make_model, make_model_size, "HP DeskJet%s", old_make_model + 7); | |
b86bc4cf | 523 | else if (!strncasecmp(old_make_model, "officejet", 9)) |
524 | snprintf(make_model, make_model_size, "HP OfficeJet%s", old_make_model + 9); | |
89d46774 | 525 | else if (!strncasecmp(old_make_model, "stylus_pro_", 11)) |
526 | snprintf(make_model, make_model_size, "EPSON Stylus Pro %s", | |
527 | old_make_model + 11); | |
528 | else | |
529 | strlcpy(make_model, old_make_model, make_model_size); | |
530 | ||
531 | if ((mmptr = strstr(make_model, ", Inc.,")) != NULL) | |
532 | { | |
533 | /* | |
534 | * Strip inc. from name, e.g. "Tektronix, Inc., Phaser 560" | |
535 | * becomes "Tektronix Phaser 560"... | |
536 | */ | |
537 | ||
a74454a7 | 538 | _cups_strcpy(mmptr, mmptr + 7); |
539 | } | |
540 | ||
d09495fa | 541 | if ((mmptr = strstr(make_model, " Network")) != NULL) |
542 | { | |
543 | /* | |
544 | * Drop unnecessary informational text, e.g. "Xerox DocuPrint N2025 | |
545 | * Network LaserJet - 2.12" becomes "Xerox DocuPrint N2025"... | |
546 | */ | |
547 | ||
548 | *mmptr = '\0'; | |
549 | } | |
550 | ||
a74454a7 | 551 | if ((mmptr = strchr(make_model, ',')) != NULL) |
552 | { | |
553 | /* | |
554 | * Drop anything after a trailing comma... | |
555 | */ | |
556 | ||
557 | *mmptr = '\0'; | |
89d46774 | 558 | } |
559 | } | |
560 | ||
561 | ||
562 | /* | |
563 | * 'free_array()' - Free an array of strings. | |
564 | */ | |
565 | ||
566 | static void | |
567 | free_array(cups_array_t *a) /* I - Array */ | |
568 | { | |
569 | char *s; /* Current string */ | |
570 | ||
571 | ||
572 | for (s = (char *)cupsArrayFirst(a); s; s = (char *)cupsArrayNext(a)) | |
573 | free(s); | |
574 | ||
575 | cupsArrayDelete(a); | |
576 | } | |
577 | ||
578 | ||
579 | /* | |
580 | * 'free_cache()' - Free the array of cached devices. | |
581 | */ | |
582 | ||
583 | static void | |
584 | free_cache(void) | |
585 | { | |
586 | snmp_cache_t *cache; /* Cached device */ | |
587 | ||
588 | ||
589 | for (cache = (snmp_cache_t *)cupsArrayFirst(Devices); | |
590 | cache; | |
591 | cache = (snmp_cache_t *)cupsArrayNext(Devices)) | |
592 | { | |
593 | free(cache->addrname); | |
594 | ||
595 | if (cache->uri) | |
596 | free(cache->uri); | |
597 | ||
598 | if (cache->id) | |
599 | free(cache->id); | |
600 | ||
601 | if (cache->make_and_model) | |
602 | free(cache->make_and_model); | |
603 | ||
604 | free(cache); | |
605 | } | |
606 | ||
607 | cupsArrayDelete(Devices); | |
608 | Devices = NULL; | |
609 | } | |
610 | ||
611 | ||
612 | /* | |
613 | * 'get_interface_addresses()' - Get the broadcast address(es) associated | |
614 | * with an interface. | |
615 | */ | |
616 | ||
617 | static http_addrlist_t * /* O - List of addresses */ | |
618 | get_interface_addresses( | |
619 | const char *ifname) /* I - Interface name */ | |
620 | { | |
621 | struct ifaddrs *addrs, /* Interface address list */ | |
622 | *addr; /* Current interface address */ | |
623 | http_addrlist_t *first, /* First address in list */ | |
624 | *last, /* Last address in list */ | |
625 | *current; /* Current address */ | |
626 | ||
627 | ||
628 | if (getifaddrs(&addrs) < 0) | |
629 | return (NULL); | |
630 | ||
631 | for (addr = addrs, first = NULL, last = NULL; addr; addr = addr->ifa_next) | |
632 | if ((addr->ifa_flags & IFF_BROADCAST) && addr->ifa_broadaddr && | |
633 | addr->ifa_broadaddr->sa_family == AF_INET && | |
634 | (!ifname || !strcmp(ifname, addr->ifa_name))) | |
635 | { | |
636 | current = calloc(1, sizeof(http_addrlist_t)); | |
637 | ||
638 | memcpy(&(current->addr), addr->ifa_broadaddr, | |
639 | sizeof(struct sockaddr_in)); | |
640 | ||
641 | if (!last) | |
642 | first = current; | |
643 | else | |
644 | last->next = current; | |
645 | ||
646 | last = current; | |
647 | } | |
648 | ||
649 | freeifaddrs(addrs); | |
650 | ||
651 | return (first); | |
652 | } | |
653 | ||
654 | ||
89d46774 | 655 | /* |
d09495fa | 656 | * 'list_device()' - List a device we found... |
89d46774 | 657 | */ |
658 | ||
659 | static void | |
d09495fa | 660 | list_device(snmp_cache_t *cache) /* I - Cached device */ |
89d46774 | 661 | { |
d09495fa | 662 | if (cache->uri) |
ae71f5de | 663 | { |
d09495fa | 664 | printf("network %s \"%s\" \"%s %s\" \"%s\"\n", |
665 | cache->uri, | |
666 | cache->make_and_model ? cache->make_and_model : "Unknown", | |
7a14d768 MS |
667 | cache->info ? cache->info : "Unknown", |
668 | cache->addrname, | |
669 | cache->id ? cache->id : ""); | |
ae71f5de MS |
670 | fflush(stdout); |
671 | } | |
89d46774 | 672 | } |
673 | ||
674 | ||
89d46774 | 675 | /* |
676 | * 'password_cb()' - Handle authentication requests. | |
677 | * | |
678 | * All we do right now is return NULL, indicating that no authentication | |
679 | * is possible. | |
680 | */ | |
681 | ||
682 | static const char * /* O - Password (NULL) */ | |
683 | password_cb(const char *prompt) /* I - Prompt message */ | |
684 | { | |
685 | (void)prompt; /* Anti-compiler-warning-code */ | |
686 | ||
687 | return (NULL); | |
688 | } | |
689 | ||
690 | ||
691 | /* | |
692 | * 'probe_device()' - Probe a device to discover whether it is a printer. | |
693 | * | |
694 | * TODO: Try using the Port Monitor MIB to discover the correct protocol | |
695 | * to use - first need a commercially-available printer that supports | |
696 | * it, though... | |
697 | */ | |
698 | ||
699 | static void | |
700 | probe_device(snmp_cache_t *device) /* I - Device */ | |
701 | { | |
b94498cf | 702 | char uri[1024], /* Full device URI */ |
703 | *uriptr, /* Pointer into URI */ | |
704 | *format; /* Format string for device */ | |
705 | device_uri_t *device_uri; /* Current DeviceURI match */ | |
89d46774 | 706 | |
707 | ||
89d46774 | 708 | debug_printf("DEBUG: %.3f Probing %s...\n", run_time(), device->addrname); |
709 | ||
b94498cf | 710 | #ifdef __APPLE__ |
711 | /* | |
712 | * TODO: Try an mDNS query first, and then fallback on direct probes... | |
713 | */ | |
d09495fa | 714 | |
b94498cf | 715 | if (!try_connect(&(device->address), device->addrname, 5353)) |
d09495fa | 716 | { |
b94498cf | 717 | debug_printf("DEBUG: %s supports mDNS, not reporting!\n", device->addrname); |
718 | return; | |
d09495fa | 719 | } |
b94498cf | 720 | #endif /* __APPLE__ */ |
d09495fa | 721 | |
b94498cf | 722 | /* |
723 | * Lookup the device in the match table... | |
724 | */ | |
89d46774 | 725 | |
b94498cf | 726 | for (device_uri = (device_uri_t *)cupsArrayFirst(DeviceURIs); |
727 | device_uri; | |
728 | device_uri = (device_uri_t *)cupsArrayNext(DeviceURIs)) | |
ac884b6a MS |
729 | if (device->make_and_model && |
730 | !regexec(&(device_uri->re), device->make_and_model, 0, NULL, 0)) | |
89d46774 | 731 | { |
d09495fa | 732 | /* |
b94498cf | 733 | * Found a match, add the URIs... |
89d46774 | 734 | */ |
735 | ||
b94498cf | 736 | for (format = (char *)cupsArrayFirst(device_uri->uris); |
737 | format; | |
738 | format = (char *)cupsArrayNext(device_uri->uris)) | |
89d46774 | 739 | { |
b94498cf | 740 | for (uriptr = uri; *format && uriptr < (uri + sizeof(uri) - 1);) |
741 | if (*format == '%' && format[1] == 's') | |
89d46774 | 742 | { |
b94498cf | 743 | /* |
744 | * Insert hostname/address... | |
745 | */ | |
89d46774 | 746 | |
b94498cf | 747 | strlcpy(uriptr, device->addrname, sizeof(uri) - (uriptr - uri)); |
748 | uriptr += strlen(uriptr); | |
749 | format += 2; | |
750 | } | |
751 | else | |
752 | *uriptr++ = *format++; | |
89d46774 | 753 | |
b94498cf | 754 | *uriptr = '\0'; |
89d46774 | 755 | |
b94498cf | 756 | update_cache(device, uri, NULL, NULL); |
89d46774 | 757 | } |
758 | ||
89d46774 | 759 | return; |
b94498cf | 760 | } |
89d46774 | 761 | |
762 | /* | |
b94498cf | 763 | * Then try the standard ports... |
89d46774 | 764 | */ |
765 | ||
766 | if (!try_connect(&(device->address), device->addrname, 9100)) | |
767 | { | |
768 | debug_printf("DEBUG: %s supports AppSocket!\n", device->addrname); | |
769 | ||
770 | snprintf(uri, sizeof(uri), "socket://%s", device->addrname); | |
771 | update_cache(device, uri, NULL, NULL); | |
772 | } | |
773 | else if (!try_connect(&(device->address), device->addrname, 515)) | |
774 | { | |
775 | debug_printf("DEBUG: %s supports LPD!\n", device->addrname); | |
776 | ||
777 | snprintf(uri, sizeof(uri), "lpd://%s/", device->addrname); | |
778 | update_cache(device, uri, NULL, NULL); | |
779 | } | |
780 | } | |
781 | ||
782 | ||
783 | /* | |
784 | * 'read_snmp_conf()' - Read the snmp.conf file. | |
785 | */ | |
786 | ||
787 | static void | |
788 | read_snmp_conf(const char *address) /* I - Single address to probe */ | |
789 | { | |
790 | cups_file_t *fp; /* File pointer */ | |
791 | char filename[1024], /* Filename */ | |
792 | line[1024], /* Line from file */ | |
793 | *value; /* Value on line */ | |
794 | int linenum; /* Line number */ | |
795 | const char *cups_serverroot; /* CUPS_SERVERROOT env var */ | |
796 | const char *debug; /* CUPS_DEBUG_LEVEL env var */ | |
d09495fa | 797 | const char *runtime; /* CUPS_MAX_RUN_TIME env var */ |
89d46774 | 798 | |
799 | ||
800 | /* | |
801 | * Initialize the global address and community lists... | |
802 | */ | |
803 | ||
804 | Addresses = cupsArrayNew(NULL, NULL); | |
805 | Communities = cupsArrayNew(NULL, NULL); | |
806 | ||
807 | if (address) | |
808 | add_array(Addresses, address); | |
809 | ||
810 | if ((debug = getenv("CUPS_DEBUG_LEVEL")) != NULL) | |
811 | DebugLevel = atoi(debug); | |
812 | ||
d09495fa | 813 | if ((runtime = getenv("CUPS_MAX_RUN_TIME")) != NULL) |
814 | MaxRunTime = atoi(runtime); | |
815 | ||
89d46774 | 816 | /* |
817 | * Find the snmp.conf file... | |
818 | */ | |
819 | ||
820 | if ((cups_serverroot = getenv("CUPS_SERVERROOT")) == NULL) | |
821 | cups_serverroot = CUPS_SERVERROOT; | |
822 | ||
823 | snprintf(filename, sizeof(filename), "%s/snmp.conf", cups_serverroot); | |
824 | ||
825 | if ((fp = cupsFileOpen(filename, "r")) != NULL) | |
826 | { | |
827 | /* | |
828 | * Read the snmp.conf file... | |
829 | */ | |
830 | ||
831 | linenum = 0; | |
832 | ||
833 | while (cupsFileGetConf(fp, line, sizeof(line), &value, &linenum)) | |
834 | { | |
835 | if (!value) | |
836 | fprintf(stderr, "ERROR: Missing value on line %d of %s!\n", linenum, | |
837 | filename); | |
838 | else if (!strcasecmp(line, "Address")) | |
839 | { | |
840 | if (!address) | |
841 | add_array(Addresses, value); | |
842 | } | |
843 | else if (!strcasecmp(line, "Community")) | |
844 | add_array(Communities, value); | |
845 | else if (!strcasecmp(line, "DebugLevel")) | |
846 | DebugLevel = atoi(value); | |
b94498cf | 847 | else if (!strcasecmp(line, "DeviceURI")) |
848 | { | |
849 | if (*value != '\"') | |
850 | fprintf(stderr, | |
851 | "ERROR: Missing double quote for regular expression on " | |
852 | "line %d of %s!\n", linenum, filename); | |
853 | else | |
854 | add_device_uri(value); | |
855 | } | |
89d46774 | 856 | else if (!strcasecmp(line, "HostNameLookups")) |
857 | HostNameLookups = !strcasecmp(value, "on") || | |
858 | !strcasecmp(value, "yes") || | |
859 | !strcasecmp(value, "true") || | |
860 | !strcasecmp(value, "double"); | |
d09495fa | 861 | else if (!strcasecmp(line, "MaxRunTime")) |
862 | MaxRunTime = atoi(value); | |
89d46774 | 863 | else |
864 | fprintf(stderr, "ERROR: Unknown directive %s on line %d of %s!\n", | |
865 | line, linenum, filename); | |
866 | } | |
867 | ||
868 | cupsFileClose(fp); | |
869 | } | |
870 | ||
871 | /* | |
872 | * Use defaults if parameters are undefined... | |
873 | */ | |
874 | ||
875 | if (cupsArrayCount(Addresses) == 0) | |
876 | { | |
bc44d920 | 877 | /* |
878 | * If we have no addresses, exit immediately... | |
879 | */ | |
880 | ||
881 | fprintf(stderr, | |
882 | "DEBUG: No address specified and no Address line in %s...\n", | |
883 | filename); | |
884 | exit(0); | |
89d46774 | 885 | } |
886 | ||
887 | if (cupsArrayCount(Communities) == 0) | |
888 | { | |
889 | fputs("INFO: Using default SNMP Community public\n", stderr); | |
890 | add_array(Communities, "public"); | |
891 | } | |
892 | } | |
893 | ||
894 | ||
895 | /* | |
896 | * 'read_snmp_response()' - Read and parse a SNMP response... | |
897 | */ | |
898 | ||
899 | static void | |
900 | read_snmp_response(int fd) /* I - SNMP socket file descriptor */ | |
901 | { | |
89d46774 | 902 | char addrname[256]; /* Source address name */ |
91c84a35 | 903 | cups_snmp_t packet; /* Decoded packet */ |
89d46774 | 904 | snmp_cache_t key, /* Search key */ |
905 | *device; /* Matching device */ | |
906 | ||
907 | ||
908 | /* | |
909 | * Read the response data... | |
910 | */ | |
911 | ||
7a14d768 | 912 | if (!_cupsSNMPRead(fd, &packet, -1.0)) |
89d46774 | 913 | { |
914 | fprintf(stderr, "ERROR: Unable to read data from socket: %s\n", | |
915 | strerror(errno)); | |
916 | return; | |
917 | } | |
918 | ||
919 | if (HostNameLookups) | |
91c84a35 | 920 | httpAddrLookup(&(packet.address), addrname, sizeof(addrname)); |
89d46774 | 921 | else |
91c84a35 | 922 | httpAddrString(&(packet.address), addrname, sizeof(addrname)); |
89d46774 | 923 | |
91c84a35 | 924 | debug_printf("DEBUG: %.3f Received data from %s...\n", run_time(), addrname); |
89d46774 | 925 | |
926 | /* | |
927 | * Look for the response status code in the SNMP message header... | |
928 | */ | |
929 | ||
91c84a35 | 930 | if (packet.error) |
89d46774 | 931 | { |
91c84a35 MS |
932 | fprintf(stderr, "ERROR: Bad SNMP packet from %s: %s\n", addrname, |
933 | packet.error); | |
89d46774 | 934 | |
935 | return; | |
936 | } | |
937 | ||
938 | debug_printf("DEBUG: community=\"%s\"\n", packet.community); | |
939 | debug_printf("DEBUG: request-id=%d\n", packet.request_id); | |
940 | debug_printf("DEBUG: error-status=%d\n", packet.error_status); | |
941 | ||
89d46774 | 942 | if (packet.error_status) |
943 | return; | |
944 | ||
945 | /* | |
946 | * Find a matching device in the cache... | |
947 | */ | |
948 | ||
8ca02f3c | 949 | key.addrname = addrname; |
950 | device = (snmp_cache_t *)cupsArrayFind(Devices, &key); | |
89d46774 | 951 | |
952 | /* | |
953 | * Process the message... | |
954 | */ | |
955 | ||
956 | if (packet.request_id == DeviceTypeRequest) | |
957 | { | |
958 | /* | |
959 | * Got the device type response... | |
960 | */ | |
961 | ||
962 | if (device) | |
963 | { | |
964 | debug_printf("DEBUG: Discarding duplicate device type for \"%s\"...\n", | |
965 | addrname); | |
966 | return; | |
967 | } | |
968 | ||
969 | /* | |
970 | * Add the device and request the device description... | |
971 | */ | |
972 | ||
91c84a35 | 973 | add_cache(&(packet.address), addrname, NULL, NULL, NULL); |
89d46774 | 974 | |
7a14d768 | 975 | _cupsSNMPWrite(fd, &(packet.address), CUPS_SNMP_VERSION_1, packet.community, |
91c84a35 | 976 | CUPS_ASN1_GET_REQUEST, DeviceDescRequest, DeviceDescOID); |
7a14d768 MS |
977 | _cupsSNMPWrite(fd, &(packet.address), CUPS_SNMP_VERSION_1, packet.community, |
978 | CUPS_ASN1_GET_REQUEST, DeviceIdRequest, DeviceIdOID); | |
979 | _cupsSNMPWrite(fd, &(packet.address), CUPS_SNMP_VERSION_1, packet.community, | |
980 | CUPS_ASN1_GET_REQUEST, DeviceUriRequest, DeviceUriOID); | |
89d46774 | 981 | } |
982 | else if (packet.request_id == DeviceDescRequest && | |
91c84a35 | 983 | packet.object_type == CUPS_ASN1_OCTET_STRING) |
89d46774 | 984 | { |
985 | /* | |
986 | * Update an existing cache entry... | |
987 | */ | |
988 | ||
989 | char make_model[256]; /* Make and model */ | |
990 | ||
991 | ||
992 | if (!device) | |
993 | { | |
994 | debug_printf("DEBUG: Discarding device description for \"%s\"...\n", | |
995 | addrname); | |
996 | return; | |
997 | } | |
998 | ||
89d46774 | 999 | if (strchr(packet.object_value.string, ':') && |
7a14d768 | 1000 | strchr(packet.object_value.string, ';')) |
89d46774 | 1001 | { |
1002 | /* | |
1003 | * Description is the IEEE-1284 device ID... | |
1004 | */ | |
1005 | ||
7a14d768 MS |
1006 | if (!device->id) |
1007 | device->id = strdup(packet.object_value.string); | |
1008 | ||
ed486911 | 1009 | backendGetMakeModel(packet.object_value.string, make_model, |
7a14d768 MS |
1010 | sizeof(make_model)); |
1011 | device->info = strdup(make_model); | |
89d46774 | 1012 | } |
1013 | else | |
1014 | { | |
1015 | /* | |
1016 | * Description is plain text... | |
1017 | */ | |
1018 | ||
1019 | fix_make_model(make_model, packet.object_value.string, | |
7a14d768 MS |
1020 | sizeof(make_model)); |
1021 | ||
1022 | device->info = strdup(packet.object_value.string); | |
89d46774 | 1023 | } |
1024 | ||
7a14d768 MS |
1025 | if (!device->make_and_model) |
1026 | device->make_and_model = strdup(make_model); | |
1027 | ||
1028 | /* | |
1029 | * List the device now if we have all the info... | |
1030 | */ | |
1031 | ||
1032 | if (device->id && device->info && device->make_and_model && device->uri) | |
1033 | list_device(device); | |
1034 | } | |
1035 | else if (packet.request_id == DeviceIdRequest && | |
1036 | packet.object_type == CUPS_ASN1_OCTET_STRING) | |
1037 | { | |
1038 | /* | |
1039 | * Update an existing cache entry... | |
1040 | */ | |
1041 | ||
1042 | char make_model[256]; /* Make and model */ | |
1043 | ||
1044 | ||
1045 | if (!device) | |
1046 | { | |
1047 | debug_printf("DEBUG: Discarding device ID for \"%s\"...\n", | |
1048 | addrname); | |
1049 | return; | |
1050 | } | |
1051 | ||
1052 | if (device->id) | |
1053 | free(device->id); | |
1054 | ||
1055 | device->id = strdup(packet.object_value.string); | |
1056 | ||
1057 | /* | |
1058 | * Convert the ID to a make and model string... | |
1059 | */ | |
1060 | ||
1061 | backendGetMakeModel(packet.object_value.string, make_model, | |
1062 | sizeof(make_model)); | |
89d46774 | 1063 | if (device->make_and_model) |
1064 | free(device->make_and_model); | |
1065 | ||
1066 | device->make_and_model = strdup(make_model); | |
ae71f5de | 1067 | |
7a14d768 MS |
1068 | /* |
1069 | * List the device now if we have all the info... | |
1070 | */ | |
1071 | ||
1072 | if (device->id && device->info && device->make_and_model && device->uri) | |
1073 | list_device(device); | |
1074 | } | |
1075 | else if (packet.request_id == DeviceUriRequest && | |
1076 | packet.object_type == CUPS_ASN1_OCTET_STRING) | |
1077 | { | |
1078 | /* | |
1079 | * Update an existing cache entry... | |
1080 | */ | |
1081 | ||
1082 | if (!device) | |
1083 | { | |
1084 | debug_printf("DEBUG: Discarding device URI for \"%s\"...\n", | |
1085 | addrname); | |
1086 | return; | |
1087 | } | |
1088 | ||
1089 | if (!strncmp(packet.object_value.string, "lpr:", 4)) | |
1090 | { | |
1091 | /* | |
1092 | * We want "lpd://..." for the URI... | |
1093 | */ | |
1094 | ||
1095 | packet.object_value.string[2] = 'd'; | |
1096 | } | |
1097 | ||
1098 | device->uri = strdup(packet.object_value.string); | |
1099 | ||
1100 | /* | |
1101 | * List the device now if we have all the info... | |
1102 | */ | |
1103 | ||
1104 | if (device->id && device->info && device->make_and_model && device->uri) | |
1105 | list_device(device); | |
89d46774 | 1106 | } |
1107 | } | |
1108 | ||
1109 | ||
1110 | /* | |
1111 | * 'run_time()' - Return the total running time... | |
1112 | */ | |
1113 | ||
1114 | static double /* O - Number of seconds */ | |
1115 | run_time(void) | |
1116 | { | |
1117 | struct timeval curtime; /* Current time */ | |
1118 | ||
1119 | ||
1120 | gettimeofday(&curtime, NULL); | |
1121 | ||
1122 | return (curtime.tv_sec - StartTime.tv_sec + | |
1123 | 0.000001 * (curtime.tv_usec - StartTime.tv_usec)); | |
1124 | } | |
1125 | ||
1126 | ||
1127 | /* | |
1128 | * 'scan_devices()' - Scan for devices using SNMP. | |
1129 | */ | |
1130 | ||
1131 | static void | |
1132 | scan_devices(int fd) /* I - SNMP socket */ | |
1133 | { | |
1134 | char *address, /* Current address */ | |
1135 | *community; /* Current community */ | |
1136 | fd_set input; /* Input set for select() */ | |
1137 | struct timeval timeout; /* Timeout for select() */ | |
1138 | time_t endtime; /* End time for scan */ | |
1139 | http_addrlist_t *addrs, /* List of addresses */ | |
1140 | *addr; /* Current address */ | |
1141 | snmp_cache_t *device; /* Current device */ | |
1142 | ||
1143 | ||
1144 | /* | |
1145 | * Setup the request IDs... | |
1146 | */ | |
1147 | ||
1148 | gettimeofday(&StartTime, NULL); | |
1149 | ||
1150 | DeviceTypeRequest = StartTime.tv_sec; | |
1151 | DeviceDescRequest = StartTime.tv_sec + 1; | |
1152 | ||
1153 | /* | |
1154 | * First send all of the broadcast queries... | |
1155 | */ | |
1156 | ||
1157 | for (address = (char *)cupsArrayFirst(Addresses); | |
1158 | address; | |
1159 | address = (char *)cupsArrayNext(Addresses)) | |
1160 | { | |
1161 | if (!strcmp(address, "@LOCAL")) | |
1162 | addrs = get_interface_addresses(NULL); | |
1163 | else if (!strncmp(address, "@IF(", 4)) | |
1164 | { | |
1165 | char ifname[255]; /* Interface name */ | |
1166 | ||
1167 | ||
1168 | strlcpy(ifname, address + 4, sizeof(ifname)); | |
1169 | if (ifname[0]) | |
1170 | ifname[strlen(ifname) - 1] = '\0'; | |
1171 | ||
1172 | addrs = get_interface_addresses(ifname); | |
1173 | } | |
1174 | else | |
1175 | addrs = httpAddrGetList(address, AF_INET, NULL); | |
1176 | ||
1177 | if (!addrs) | |
1178 | { | |
1179 | fprintf(stderr, "ERROR: Unable to scan \"%s\"!\n", address); | |
1180 | continue; | |
1181 | } | |
1182 | ||
1183 | for (community = (char *)cupsArrayFirst(Communities); | |
1184 | community; | |
1185 | community = (char *)cupsArrayNext(Communities)) | |
1186 | { | |
1187 | debug_printf("DEBUG: Scanning for devices in \"%s\" via \"%s\"...\n", | |
1188 | community, address); | |
1189 | ||
1190 | for (addr = addrs; addr; addr = addr->next) | |
7a14d768 | 1191 | _cupsSNMPWrite(fd, &(addr->addr), CUPS_SNMP_VERSION_1, community, |
91c84a35 | 1192 | CUPS_ASN1_GET_REQUEST, DeviceTypeRequest, DeviceTypeOID); |
89d46774 | 1193 | } |
1194 | ||
1195 | httpAddrFreeList(addrs); | |
1196 | } | |
1197 | ||
1198 | /* | |
1199 | * Then read any responses that come in over the next 3 seconds... | |
1200 | */ | |
1201 | ||
ae71f5de | 1202 | endtime = time(NULL) + MaxRunTime; |
89d46774 | 1203 | |
1204 | FD_ZERO(&input); | |
1205 | ||
1206 | while (time(NULL) < endtime) | |
1207 | { | |
ae71f5de | 1208 | timeout.tv_sec = 2; |
89d46774 | 1209 | timeout.tv_usec = 0; |
1210 | ||
1211 | FD_SET(fd, &input); | |
1212 | if (select(fd + 1, &input, NULL, NULL, &timeout) < 0) | |
1213 | { | |
1214 | fprintf(stderr, "ERROR: %.3f select() for %d failed: %s\n", run_time(), | |
1215 | fd, strerror(errno)); | |
1216 | break; | |
1217 | } | |
1218 | ||
1219 | if (FD_ISSET(fd, &input)) | |
1220 | read_snmp_response(fd); | |
1221 | else | |
1222 | break; | |
1223 | } | |
1224 | ||
1225 | /* | |
1226 | * Finally, probe all of the printers we discovered to see how they are | |
1227 | * connected... | |
1228 | */ | |
1229 | ||
1230 | for (device = (snmp_cache_t *)cupsArrayFirst(Devices); | |
1231 | device; | |
1232 | device = (snmp_cache_t *)cupsArrayNext(Devices)) | |
d09495fa | 1233 | if (MaxRunTime > 0 && run_time() >= MaxRunTime) |
1234 | break; | |
1235 | else if (!device->uri) | |
89d46774 | 1236 | probe_device(device); |
1237 | ||
1238 | debug_printf("DEBUG: %.3f Scan complete!\n", run_time()); | |
1239 | } | |
1240 | ||
1241 | ||
89d46774 | 1242 | /* |
1243 | * 'try_connect()' - Try connecting on a port... | |
1244 | */ | |
1245 | ||
1246 | static int /* O - 0 on success or -1 on error */ | |
1247 | try_connect(http_addr_t *addr, /* I - Socket address */ | |
1248 | const char *addrname, /* I - Hostname or IP address */ | |
1249 | int port) /* I - Port number */ | |
1250 | { | |
1251 | int fd; /* Socket */ | |
1252 | int status; /* Connection status */ | |
1253 | ||
1254 | ||
1255 | debug_printf("DEBUG: %.3f Trying %s://%s:%d...\n", run_time(), | |
1256 | port == 515 ? "lpd" : "socket", addrname, port); | |
1257 | ||
1258 | if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) | |
1259 | { | |
c0e1af83 | 1260 | fprintf(stderr, "ERROR: Unable to create socket: %s\n", |
1261 | strerror(errno)); | |
89d46774 | 1262 | return (-1); |
1263 | } | |
1264 | ||
1265 | addr->ipv4.sin_port = htons(port); | |
1266 | ||
89d46774 | 1267 | alarm(1); |
1268 | ||
1269 | status = connect(fd, (void *)addr, httpAddrLength(addr)); | |
1270 | ||
1271 | close(fd); | |
1272 | alarm(0); | |
1273 | ||
1274 | return (status); | |
1275 | } | |
1276 | ||
1277 | ||
1278 | /* | |
1279 | * 'update_cache()' - Update a cached device... | |
1280 | */ | |
1281 | ||
1282 | static void | |
1283 | update_cache(snmp_cache_t *device, /* I - Device */ | |
1284 | const char *uri, /* I - Device URI */ | |
1285 | const char *id, /* I - Device ID */ | |
1286 | const char *make_model) /* I - Device make and model */ | |
1287 | { | |
1288 | if (device->uri) | |
1289 | free(device->uri); | |
1290 | ||
1291 | device->uri = strdup(uri); | |
1292 | ||
1293 | if (id) | |
1294 | { | |
1295 | if (device->id) | |
1296 | free(device->id); | |
1297 | ||
1298 | device->id = strdup(id); | |
1299 | } | |
1300 | ||
1301 | if (make_model) | |
1302 | { | |
1303 | if (device->make_and_model) | |
1304 | free(device->make_and_model); | |
1305 | ||
1306 | device->make_and_model = strdup(make_model); | |
1307 | } | |
d09495fa | 1308 | |
1309 | list_device(device); | |
89d46774 | 1310 | } |
1311 | ||
1312 | ||
1313 | /* | |
bc44d920 | 1314 | * End of "$Id: snmp.c 6649 2007-07-11 21:46:42Z mike $". |
89d46774 | 1315 | */ |