4 * SNMP discovery backend for CUPS.
6 * Copyright 2007-2014 by Apple Inc.
7 * Copyright 2006-2007 by Easy Software Products, all rights reserved.
9 * These coded instructions, statements, and computer programs are the
10 * property of Apple Inc. and are protected by Federal copyright
11 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
12 * "LICENSE" which should have been included with this file. If this
13 * file is missing or damaged, see the license at "http://www.cups.org/".
15 * This file is subject to the Apple OS-Developed Software exception.
19 * Include necessary headers.
22 #include "backend-private.h"
23 #include <cups/array.h>
24 #include <cups/file.h>
25 #include <cups/http-private.h>
30 * This backend implements SNMP printer discovery. It uses a broadcast-
31 * based approach to get SNMP response packets from potential printers,
32 * requesting OIDs from the Host and Port Monitor MIBs, does a URI
33 * lookup based on the device description string, and finally a probe of
34 * port 9100 (AppSocket) and 515 (LPD).
36 * The current focus is on printers with internal network cards, although
37 * the code also works with many external print servers as well.
39 * The backend reads the snmp.conf file from the CUPS_SERVERROOT directory
40 * which can contain comments, blank lines, or any number of the following
48 * DeviceURI "regex pattern" uri
53 * The default is to use:
61 * This backend is known to work with the following network printers and
64 * Axis OfficeBasic, 5400, 5600
74 * It does not currently work with:
81 * (for all of these, they do not support the Host MIB)
88 enum /**** Request IDs for each field ****/
98 typedef struct device_uri_s
/**** DeviceURI values ****/
100 regex_t re
; /* Regular expression to match */
101 cups_array_t
*uris
; /* URIs */
104 typedef struct snmp_cache_s
/**** SNMP scan cache ****/
106 http_addr_t address
; /* Address of device */
107 char *addrname
, /* Name of device */
108 *uri
, /* device-uri */
110 *info
, /* device-info */
111 *location
, /* device-location */
112 *make_and_model
; /* device-make-and-model */
113 int sent
; /* Has this device been listed? */
121 static char *add_array(cups_array_t
*a
, const char *s
);
122 static void add_cache(http_addr_t
*addr
, const char *addrname
,
123 const char *uri
, const char *id
,
124 const char *make_and_model
);
125 static device_uri_t
*add_device_uri(char *value
);
126 static void alarm_handler(int sig
);
127 static int compare_cache(snmp_cache_t
*a
, snmp_cache_t
*b
);
128 static void debug_printf(const char *format
, ...);
129 static void fix_make_model(char *make_model
,
130 const char *old_make_model
,
131 int make_model_size
);
132 static void free_array(cups_array_t
*a
);
133 static void free_cache(void);
134 static http_addrlist_t
*get_interface_addresses(const char *ifname
);
135 static void list_device(snmp_cache_t
*cache
);
136 static const char *password_cb(const char *prompt
);
137 static void probe_device(snmp_cache_t
*device
);
138 static void read_snmp_conf(const char *address
);
139 static void read_snmp_response(int fd
);
140 static double run_time(void);
141 static void scan_devices(int ipv4
, int ipv6
);
142 static int try_connect(http_addr_t
*addr
, const char *addrname
,
144 static void update_cache(snmp_cache_t
*device
, const char *uri
,
145 const char *id
, const char *make_model
);
152 static cups_array_t
*Addresses
= NULL
;
153 static cups_array_t
*Communities
= NULL
;
154 static cups_array_t
*Devices
= NULL
;
155 static int DebugLevel
= 0;
156 static const int DescriptionOID
[] = { CUPS_OID_hrDeviceDescr
, 1, -1 };
157 static const int LocationOID
[] = { CUPS_OID_sysLocation
, 0, -1 };
158 static const int DeviceTypeOID
[] = { CUPS_OID_hrDeviceType
, 1, -1 };
159 static const int DeviceIdOID
[] = { CUPS_OID_ppmPrinterIEEE1284DeviceId
, 1, -1 };
160 static const int UriOID
[] = { CUPS_OID_ppmPortServiceNameOrURI
, 1, 1, -1 };
161 static const int LexmarkProductOID
[] = { 1,3,6,1,4,1,641,2,1,2,1,2,1,-1 };
162 static const int LexmarkProductOID2
[] = { 1,3,6,1,4,1,674,10898,100,2,1,2,1,2,1,-1 };
163 static const int LexmarkDeviceIdOID
[] = { 1,3,6,1,4,1,641,2,1,2,1,3,1,-1 };
164 static const int XeroxProductOID
[] = { 1,3,6,1,4,1,128,2,1,3,1,2,0,-1 };
165 static cups_array_t
*DeviceURIs
= NULL
;
166 static int HostNameLookups
= 0;
167 static int MaxRunTime
= 120;
168 static struct timeval StartTime
;
172 * 'main()' - Discover printers via SNMP.
175 int /* O - Exit status */
176 main(int argc
, /* I - Number of command-line arguments (6 or 7) */
177 char *argv
[]) /* I - Command-line arguments */
179 int ipv4
, /* SNMP IPv4 socket */
180 ipv6
; /* SNMP IPv6 socket */
181 #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
182 struct sigaction action
; /* Actions for POSIX signals */
183 #endif /* HAVE_SIGACTION && !HAVE_SIGSET */
187 * Check command-line options...
192 _cupsLangPuts(stderr
, _("Usage: snmp [host-or-ip-address]"));
197 * Set the password callback for IPP operations...
200 cupsSetPasswordCB(password_cb
);
203 * Catch SIGALRM signals...
207 sigset(SIGALRM
, alarm_handler
);
208 #elif defined(HAVE_SIGACTION)
209 memset(&action
, 0, sizeof(action
));
211 sigemptyset(&action
.sa_mask
);
212 sigaddset(&action
.sa_mask
, SIGALRM
);
213 action
.sa_handler
= alarm_handler
;
214 sigaction(SIGALRM
, &action
, NULL
);
216 signal(SIGALRM
, alarm_handler
);
217 #endif /* HAVE_SIGSET */
220 * Open the SNMP socket...
223 if ((ipv4
= _cupsSNMPOpen(AF_INET
)) < 0)
227 if ((ipv6
= _cupsSNMPOpen(AF_INET6
)) < 0)
228 perror("DEBUG: Unable to create IPv6 socket");
231 #endif /* AF_INET6 */
234 * Read the configuration file and any cache data...
237 read_snmp_conf(argv
[1]);
239 _cupsSNMPSetDebug(DebugLevel
);
241 Devices
= cupsArrayNew((cups_array_func_t
)compare_cache
, NULL
);
244 * Scan for devices...
247 scan_devices(ipv4
, ipv6
);
250 * Close, free, and return with no errors...
253 _cupsSNMPClose(ipv4
);
255 _cupsSNMPClose(ipv6
);
257 free_array(Addresses
);
258 free_array(Communities
);
266 * 'add_array()' - Add a string to an array.
269 static char * /* O - New string */
270 add_array(cups_array_t
*a
, /* I - Array */
271 const char *s
) /* I - String to add */
273 char *dups
; /* New string */
278 cupsArrayAdd(a
, dups
);
285 * 'add_cache()' - Add a cached device...
289 add_cache(http_addr_t
*addr
, /* I - Device IP address */
290 const char *addrname
, /* I - IP address or name string */
291 const char *uri
, /* I - Device URI */
292 const char *id
, /* I - 1284 device ID */
293 const char *make_and_model
) /* I - Make and model */
295 snmp_cache_t
*temp
; /* New device entry */
298 debug_printf("DEBUG: add_cache(addr=%p, addrname=\"%s\", uri=\"%s\", "
299 "id=\"%s\", make_and_model=\"%s\")\n",
300 addr
, addrname
, uri
? uri
: "(null)", id
? id
: "(null)",
301 make_and_model
? make_and_model
: "(null)");
303 temp
= calloc(1, sizeof(snmp_cache_t
));
304 memcpy(&(temp
->address
), addr
, sizeof(temp
->address
));
306 temp
->addrname
= strdup(addrname
);
309 temp
->uri
= strdup(uri
);
312 temp
->id
= strdup(id
);
315 temp
->make_and_model
= strdup(make_and_model
);
317 cupsArrayAdd(Devices
, temp
);
325 * 'add_device_uri()' - Add a device URI to the cache.
327 * The value string is modified (chopped up) as needed.
330 static device_uri_t
* /* O - Device URI */
331 add_device_uri(char *value
) /* I - Value from snmp.conf */
333 device_uri_t
*device_uri
; /* Device URI */
334 char *start
; /* Start of value */
338 * Allocate memory as needed...
342 DeviceURIs
= cupsArrayNew(NULL
, NULL
);
347 if ((device_uri
= calloc(1, sizeof(device_uri_t
))) == NULL
)
350 if ((device_uri
->uris
= cupsArrayNew(NULL
, NULL
)) == NULL
)
357 * Scan the value string for the regular expression and URI(s)...
360 value
++; /* Skip leading " */
362 for (start
= value
; *value
&& *value
!= '\"'; value
++)
363 if (*value
== '\\' && value
[1])
364 _cups_strcpy(value
, value
+ 1);
368 fputs("ERROR: Missing end quote for DeviceURI!\n", stderr
);
370 cupsArrayDelete(device_uri
->uris
);
378 if (regcomp(&(device_uri
->re
), start
, REG_EXTENDED
| REG_ICASE
))
380 fputs("ERROR: Bad regular expression for DeviceURI!\n", stderr
);
382 cupsArrayDelete(device_uri
->uris
);
390 while (isspace(*value
& 255))
396 for (start
= value
; *value
&& !isspace(*value
& 255); value
++);
401 cupsArrayAdd(device_uri
->uris
, strdup(start
));
405 * Add the device URI to the list and return it...
408 cupsArrayAdd(DeviceURIs
, device_uri
);
415 * 'alarm_handler()' - Handle alarm signals...
419 alarm_handler(int sig
) /* I - Signal number */
427 #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION)
428 signal(SIGALRM
, alarm_handler
);
429 #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */
432 write(2, "DEBUG: ALARM!\n", 14);
437 * 'compare_cache()' - Compare two cache entries.
440 static int /* O - Result of comparison */
441 compare_cache(snmp_cache_t
*a
, /* I - First cache entry */
442 snmp_cache_t
*b
) /* I - Second cache entry */
444 return (_cups_strcasecmp(a
->addrname
, b
->addrname
));
449 * 'debug_printf()' - Display some debugging information.
453 debug_printf(const char *format
, /* I - Printf-style format string */
454 ...) /* I - Additional arguments as needed */
456 va_list ap
; /* Pointer to arguments */
462 va_start(ap
, format
);
463 vfprintf(stderr
, format
, ap
);
469 * 'fix_make_model()' - Fix common problems in the make-and-model string.
474 char *make_model
, /* I - New make-and-model string */
475 const char *old_make_model
, /* I - Old make-and-model string */
476 int make_model_size
) /* I - Size of new string buffer */
478 char *mmptr
; /* Pointer into make-and-model string */
482 * Fix some common problems with the make-and-model string so
483 * that printer driver detection works better...
486 if (!_cups_strncasecmp(old_make_model
, "Hewlett-Packard", 15))
489 * Strip leading Hewlett-Packard and hp prefixes and replace
490 * with a single HP manufacturer prefix...
493 mmptr
= (char *)old_make_model
+ 15;
495 while (isspace(*mmptr
& 255))
498 if (!_cups_strncasecmp(mmptr
, "hp", 2))
502 while (isspace(*mmptr
& 255))
509 strlcpy(make_model
+ 3, mmptr
, (size_t)make_model_size
- 3);
511 else if (!_cups_strncasecmp(old_make_model
, "deskjet", 7))
512 snprintf(make_model
, (size_t)make_model_size
, "HP DeskJet%s", old_make_model
+ 7);
513 else if (!_cups_strncasecmp(old_make_model
, "officejet", 9))
514 snprintf(make_model
, (size_t)make_model_size
, "HP OfficeJet%s", old_make_model
+ 9);
515 else if (!_cups_strncasecmp(old_make_model
, "stylus_pro_", 11))
516 snprintf(make_model
, (size_t)make_model_size
, "EPSON Stylus Pro %s", old_make_model
+ 11);
518 strlcpy(make_model
, old_make_model
, (size_t)make_model_size
);
520 if ((mmptr
= strstr(make_model
, ", Inc.,")) != NULL
)
523 * Strip inc. from name, e.g. "Tektronix, Inc., Phaser 560"
524 * becomes "Tektronix Phaser 560"...
527 _cups_strcpy(mmptr
, mmptr
+ 7);
530 if ((mmptr
= strstr(make_model
, " Network")) != NULL
)
533 * Drop unnecessary informational text, e.g. "Xerox DocuPrint N2025
534 * Network LaserJet - 2.12" becomes "Xerox DocuPrint N2025"...
540 if ((mmptr
= strchr(make_model
, ',')) != NULL
)
543 * Drop anything after a trailing comma...
552 * 'free_array()' - Free an array of strings.
556 free_array(cups_array_t
*a
) /* I - Array */
558 char *s
; /* Current string */
561 for (s
= (char *)cupsArrayFirst(a
); s
; s
= (char *)cupsArrayNext(a
))
569 * 'free_cache()' - Free the array of cached devices.
575 snmp_cache_t
*cache
; /* Cached device */
578 for (cache
= (snmp_cache_t
*)cupsArrayFirst(Devices
);
580 cache
= (snmp_cache_t
*)cupsArrayNext(Devices
))
582 free(cache
->addrname
);
590 if (cache
->make_and_model
)
591 free(cache
->make_and_model
);
596 cupsArrayDelete(Devices
);
602 * 'get_interface_addresses()' - Get the broadcast address(es) associated
606 static http_addrlist_t
* /* O - List of addresses */
607 get_interface_addresses(
608 const char *ifname
) /* I - Interface name */
610 struct ifaddrs
*addrs
, /* Interface address list */
611 *addr
; /* Current interface address */
612 http_addrlist_t
*first
, /* First address in list */
613 *last
, /* Last address in list */
614 *current
; /* Current address */
617 if (getifaddrs(&addrs
) < 0)
620 for (addr
= addrs
, first
= NULL
, last
= NULL
; addr
; addr
= addr
->ifa_next
)
621 if ((addr
->ifa_flags
& IFF_BROADCAST
) && addr
->ifa_broadaddr
&&
622 addr
->ifa_broadaddr
->sa_family
== AF_INET
&&
623 (!ifname
|| !strcmp(ifname
, addr
->ifa_name
)))
625 current
= calloc(1, sizeof(http_addrlist_t
));
627 memcpy(&(current
->addr
), addr
->ifa_broadaddr
,
628 sizeof(struct sockaddr_in
));
633 last
->next
= current
;
645 * 'list_device()' - List a device we found...
649 list_device(snmp_cache_t
*cache
) /* I - Cached device */
652 cupsBackendReport("network", cache
->uri
, cache
->make_and_model
,
653 cache
->info
, cache
->id
, cache
->location
);
658 * 'password_cb()' - Handle authentication requests.
660 * All we do right now is return NULL, indicating that no authentication
664 static const char * /* O - Password (NULL) */
665 password_cb(const char *prompt
) /* I - Prompt message */
667 (void)prompt
; /* Anti-compiler-warning-code */
674 * 'probe_device()' - Probe a device to discover whether it is a printer.
676 * TODO: Try using the Port Monitor MIB to discover the correct protocol
677 * to use - first need a commercially-available printer that supports
682 probe_device(snmp_cache_t
*device
) /* I - Device */
684 char uri
[1024], /* Full device URI */
685 *uriptr
, /* Pointer into URI */
686 *format
; /* Format string for device */
687 device_uri_t
*device_uri
; /* Current DeviceURI match */
690 debug_printf("DEBUG: %.3f Probing %s...\n", run_time(), device
->addrname
);
694 * If the printer supports Bonjour/mDNS, don't report it from the SNMP backend.
697 if (!try_connect(&(device
->address
), device
->addrname
, 5353))
699 debug_printf("DEBUG: %s supports mDNS, not reporting!\n", device
->addrname
);
702 #endif /* __APPLE__ */
705 * Lookup the device in the match table...
708 for (device_uri
= (device_uri_t
*)cupsArrayFirst(DeviceURIs
);
710 device_uri
= (device_uri_t
*)cupsArrayNext(DeviceURIs
))
711 if (device
->make_and_model
&&
712 !regexec(&(device_uri
->re
), device
->make_and_model
, 0, NULL
, 0))
715 * Found a match, add the URIs...
718 for (format
= (char *)cupsArrayFirst(device_uri
->uris
);
720 format
= (char *)cupsArrayNext(device_uri
->uris
))
722 for (uriptr
= uri
; *format
&& uriptr
< (uri
+ sizeof(uri
) - 1);)
723 if (*format
== '%' && format
[1] == 's')
726 * Insert hostname/address...
729 strlcpy(uriptr
, device
->addrname
, sizeof(uri
) - (size_t)(uriptr
- uri
));
730 uriptr
+= strlen(uriptr
);
734 *uriptr
++ = *format
++;
738 update_cache(device
, uri
, NULL
, NULL
);
745 * Then try the standard ports...
748 if (!try_connect(&(device
->address
), device
->addrname
, 9100))
750 debug_printf("DEBUG: %s supports AppSocket!\n", device
->addrname
);
752 snprintf(uri
, sizeof(uri
), "socket://%s", device
->addrname
);
753 update_cache(device
, uri
, NULL
, NULL
);
755 else if (!try_connect(&(device
->address
), device
->addrname
, 515))
757 debug_printf("DEBUG: %s supports LPD!\n", device
->addrname
);
759 snprintf(uri
, sizeof(uri
), "lpd://%s/", device
->addrname
);
760 update_cache(device
, uri
, NULL
, NULL
);
766 * 'read_snmp_conf()' - Read the snmp.conf file.
770 read_snmp_conf(const char *address
) /* I - Single address to probe */
772 cups_file_t
*fp
; /* File pointer */
773 char filename
[1024], /* Filename */
774 line
[1024], /* Line from file */
775 *value
; /* Value on line */
776 int linenum
; /* Line number */
777 const char *cups_serverroot
; /* CUPS_SERVERROOT env var */
778 const char *debug
; /* CUPS_DEBUG_LEVEL env var */
779 const char *runtime
; /* CUPS_MAX_RUN_TIME env var */
783 * Initialize the global address and community lists...
786 Addresses
= cupsArrayNew(NULL
, NULL
);
787 Communities
= cupsArrayNew(NULL
, NULL
);
790 add_array(Addresses
, address
);
792 if ((debug
= getenv("CUPS_DEBUG_LEVEL")) != NULL
)
793 DebugLevel
= atoi(debug
);
795 if ((runtime
= getenv("CUPS_MAX_RUN_TIME")) != NULL
)
796 MaxRunTime
= atoi(runtime
);
799 * Find the snmp.conf file...
802 if ((cups_serverroot
= getenv("CUPS_SERVERROOT")) == NULL
)
803 cups_serverroot
= CUPS_SERVERROOT
;
805 snprintf(filename
, sizeof(filename
), "%s/snmp.conf", cups_serverroot
);
807 if ((fp
= cupsFileOpen(filename
, "r")) != NULL
)
810 * Read the snmp.conf file...
815 while (cupsFileGetConf(fp
, line
, sizeof(line
), &value
, &linenum
))
818 fprintf(stderr
, "ERROR: Missing value on line %d of %s!\n", linenum
,
820 else if (!_cups_strcasecmp(line
, "Address"))
823 add_array(Addresses
, value
);
825 else if (!_cups_strcasecmp(line
, "Community"))
826 add_array(Communities
, value
);
827 else if (!_cups_strcasecmp(line
, "DebugLevel"))
828 DebugLevel
= atoi(value
);
829 else if (!_cups_strcasecmp(line
, "DeviceURI"))
833 "ERROR: Missing double quote for regular expression on "
834 "line %d of %s!\n", linenum
, filename
);
836 add_device_uri(value
);
838 else if (!_cups_strcasecmp(line
, "HostNameLookups"))
839 HostNameLookups
= !_cups_strcasecmp(value
, "on") ||
840 !_cups_strcasecmp(value
, "yes") ||
841 !_cups_strcasecmp(value
, "true") ||
842 !_cups_strcasecmp(value
, "double");
843 else if (!_cups_strcasecmp(line
, "MaxRunTime"))
844 MaxRunTime
= atoi(value
);
846 fprintf(stderr
, "ERROR: Unknown directive %s on line %d of %s!\n",
847 line
, linenum
, filename
);
854 * Use defaults if parameters are undefined...
857 if (cupsArrayCount(Addresses
) == 0)
860 * If we have no addresses, exit immediately...
864 "DEBUG: No address specified and no Address line in %s...\n",
869 if (cupsArrayCount(Communities
) == 0)
871 fputs("INFO: Using default SNMP Community public\n", stderr
);
872 add_array(Communities
, "public");
878 * 'read_snmp_response()' - Read and parse a SNMP response...
882 read_snmp_response(int fd
) /* I - SNMP socket file descriptor */
884 char addrname
[256]; /* Source address name */
885 cups_snmp_t packet
; /* Decoded packet */
886 snmp_cache_t key
, /* Search key */
887 *device
; /* Matching device */
891 * Read the response data...
894 if (!_cupsSNMPRead(fd
, &packet
, -1.0))
896 fprintf(stderr
, "ERROR: Unable to read data from socket: %s\n",
902 httpAddrLookup(&(packet
.address
), addrname
, sizeof(addrname
));
904 httpAddrString(&(packet
.address
), addrname
, sizeof(addrname
));
906 debug_printf("DEBUG: %.3f Received data from %s...\n", run_time(), addrname
);
909 * Look for the response status code in the SNMP message header...
914 fprintf(stderr
, "ERROR: Bad SNMP packet from %s: %s\n", addrname
,
920 debug_printf("DEBUG: community=\"%s\"\n", packet
.community
);
921 debug_printf("DEBUG: request-id=%d\n", packet
.request_id
);
922 debug_printf("DEBUG: error-status=%d\n", packet
.error_status
);
924 if (packet
.error_status
&& packet
.request_id
!= DEVICE_TYPE
)
928 * Find a matching device in the cache...
931 key
.addrname
= addrname
;
932 device
= (snmp_cache_t
*)cupsArrayFind(Devices
, &key
);
935 * Process the message...
938 switch (packet
.request_id
)
942 * Got the device type response...
947 debug_printf("DEBUG: Discarding duplicate device type for \"%s\"...\n",
953 * Add the device and request the device data...
956 add_cache(&(packet
.address
), addrname
, NULL
, NULL
, NULL
);
958 _cupsSNMPWrite(fd
, &(packet
.address
), CUPS_SNMP_VERSION_1
,
959 packet
.community
, CUPS_ASN1_GET_REQUEST
,
960 DEVICE_DESCRIPTION
, DescriptionOID
);
961 _cupsSNMPWrite(fd
, &(packet
.address
), CUPS_SNMP_VERSION_1
,
962 packet
.community
, CUPS_ASN1_GET_REQUEST
,
963 DEVICE_ID
, DeviceIdOID
);
964 _cupsSNMPWrite(fd
, &(packet
.address
), CUPS_SNMP_VERSION_1
,
965 packet
.community
, CUPS_ASN1_GET_REQUEST
,
967 _cupsSNMPWrite(fd
, &(packet
.address
), CUPS_SNMP_VERSION_1
,
968 packet
.community
, CUPS_ASN1_GET_REQUEST
,
969 DEVICE_LOCATION
, LocationOID
);
970 _cupsSNMPWrite(fd
, &(packet
.address
), CUPS_SNMP_VERSION_1
,
971 packet
.community
, CUPS_ASN1_GET_REQUEST
,
972 DEVICE_PRODUCT
, LexmarkProductOID
);
973 _cupsSNMPWrite(fd
, &(packet
.address
), CUPS_SNMP_VERSION_1
,
974 packet
.community
, CUPS_ASN1_GET_REQUEST
,
975 DEVICE_PRODUCT
, LexmarkProductOID2
);
976 _cupsSNMPWrite(fd
, &(packet
.address
), CUPS_SNMP_VERSION_1
,
977 packet
.community
, CUPS_ASN1_GET_REQUEST
,
978 DEVICE_ID
, LexmarkDeviceIdOID
);
979 _cupsSNMPWrite(fd
, &(packet
.address
), CUPS_SNMP_VERSION_1
,
980 packet
.community
, CUPS_ASN1_GET_REQUEST
,
981 DEVICE_PRODUCT
, XeroxProductOID
);
984 case DEVICE_DESCRIPTION
:
985 if (device
&& packet
.object_type
== CUPS_ASN1_OCTET_STRING
)
988 * Update an existing cache entry...
991 char make_model
[256]; /* Make and model */
994 if (strchr((char *)packet
.object_value
.string
.bytes
, ':') &&
995 strchr((char *)packet
.object_value
.string
.bytes
, ';'))
998 * Description is the IEEE-1284 device ID...
1001 char *ptr
; /* Pointer into device ID */
1003 for (ptr
= (char *)packet
.object_value
.string
.bytes
; *ptr
; ptr
++)
1005 *ptr
= ';'; /* A lot of bad printers put a newline */
1007 device
->id
= strdup((char *)packet
.object_value
.string
.bytes
);
1009 backendGetMakeModel((char *)packet
.object_value
.string
.bytes
,
1010 make_model
, sizeof(make_model
));
1015 device
->info
= strdup(make_model
);
1020 * Description is plain text...
1023 fix_make_model(make_model
, (char *)packet
.object_value
.string
.bytes
,
1024 sizeof(make_model
));
1029 device
->info
= strdup((char *)packet
.object_value
.string
.bytes
);
1032 if (!device
->make_and_model
)
1033 device
->make_and_model
= strdup(make_model
);
1038 if (device
&& packet
.object_type
== CUPS_ASN1_OCTET_STRING
&&
1040 strlen(device
->id
) < packet
.object_value
.string
.num_bytes
))
1043 * Update an existing cache entry...
1046 char make_model
[256]; /* Make and model */
1047 char *ptr
; /* Pointer into device ID */
1049 for (ptr
= (char *)packet
.object_value
.string
.bytes
; *ptr
; ptr
++)
1051 *ptr
= ';'; /* A lot of bad printers put a newline */
1055 device
->id
= strdup((char *)packet
.object_value
.string
.bytes
);
1058 * Convert the ID to a make and model string...
1061 backendGetMakeModel((char *)packet
.object_value
.string
.bytes
,
1062 make_model
, sizeof(make_model
));
1063 if (device
->make_and_model
)
1064 free(device
->make_and_model
);
1066 device
->make_and_model
= strdup(make_model
);
1070 case DEVICE_LOCATION
:
1071 if (device
&& packet
.object_type
== CUPS_ASN1_OCTET_STRING
&&
1073 device
->location
= strdup((char *)packet
.object_value
.string
.bytes
);
1076 case DEVICE_PRODUCT
:
1077 if (device
&& packet
.object_type
== CUPS_ASN1_OCTET_STRING
&&
1081 * Update an existing cache entry...
1085 device
->info
= strdup((char *)packet
.object_value
.string
.bytes
);
1087 if (device
->make_and_model
)
1088 free(device
->make_and_model
);
1090 device
->make_and_model
= strdup((char *)packet
.object_value
.string
.bytes
);
1095 if (device
&& packet
.object_type
== CUPS_ASN1_OCTET_STRING
&&
1096 !device
->uri
&& packet
.object_value
.string
.num_bytes
> 3)
1099 * Update an existing cache entry...
1102 char scheme
[32], /* URI scheme */
1103 userpass
[256], /* Username:password in URI */
1104 hostname
[256], /* Hostname in URI */
1105 resource
[1024]; /* Resource path in URI */
1106 int port
; /* Port number in URI */
1108 if (!strncmp((char *)packet
.object_value
.string
.bytes
, "lpr:", 4))
1111 * We want "lpd://..." for the URI...
1114 packet
.object_value
.string
.bytes
[2] = 'd';
1117 if (httpSeparateURI(HTTP_URI_CODING_ALL
,
1118 (char *)packet
.object_value
.string
.bytes
,
1119 scheme
, sizeof(scheme
),
1120 userpass
, sizeof(userpass
),
1121 hostname
, sizeof(hostname
), &port
,
1122 resource
, sizeof(resource
)) >= HTTP_URI_OK
)
1123 device
->uri
= strdup((char *)packet
.object_value
.string
.bytes
);
1131 * 'run_time()' - Return the total running time...
1134 static double /* O - Number of seconds */
1137 struct timeval curtime
; /* Current time */
1140 gettimeofday(&curtime
, NULL
);
1142 return (curtime
.tv_sec
- StartTime
.tv_sec
+
1143 0.000001 * (curtime
.tv_usec
- StartTime
.tv_usec
));
1148 * 'scan_devices()' - Scan for devices using SNMP.
1152 scan_devices(int ipv4
, /* I - SNMP IPv4 socket */
1153 int ipv6
) /* I - SNMP IPv6 socket */
1155 int fd
, /* File descriptor for this address */
1156 busy
; /* Are we busy processing something? */
1157 char *address
, /* Current address */
1158 *community
; /* Current community */
1159 fd_set input
; /* Input set for select() */
1160 struct timeval timeout
; /* Timeout for select() */
1161 time_t endtime
; /* End time for scan */
1162 http_addrlist_t
*addrs
, /* List of addresses */
1163 *addr
; /* Current address */
1164 snmp_cache_t
*device
; /* Current device */
1165 char temp
[1024]; /* Temporary address string */
1168 gettimeofday(&StartTime
, NULL
);
1171 * First send all of the broadcast queries...
1174 for (address
= (char *)cupsArrayFirst(Addresses
);
1176 address
= (char *)cupsArrayNext(Addresses
))
1178 if (!strcmp(address
, "@LOCAL"))
1179 addrs
= get_interface_addresses(NULL
);
1180 else if (!strncmp(address
, "@IF(", 4))
1182 char ifname
[255]; /* Interface name */
1184 strlcpy(ifname
, address
+ 4, sizeof(ifname
));
1186 ifname
[strlen(ifname
) - 1] = '\0';
1188 addrs
= get_interface_addresses(ifname
);
1191 addrs
= httpAddrGetList(address
, AF_UNSPEC
, NULL
);
1195 fprintf(stderr
, "ERROR: Unable to scan \"%s\"!\n", address
);
1199 for (community
= (char *)cupsArrayFirst(Communities
);
1201 community
= (char *)cupsArrayNext(Communities
))
1203 debug_printf("DEBUG: Scanning for devices in \"%s\" via \"%s\"...\n",
1204 community
, address
);
1206 for (addr
= addrs
; addr
; addr
= addr
->next
)
1209 if (httpAddrFamily(&(addr
->addr
)) == AF_INET6
)
1212 #endif /* AF_INET6 */
1215 debug_printf("DEBUG: Sending get request to %s...\n",
1216 httpAddrString(&(addr
->addr
), temp
, sizeof(temp
)));
1218 _cupsSNMPWrite(fd
, &(addr
->addr
), CUPS_SNMP_VERSION_1
, community
,
1219 CUPS_ASN1_GET_REQUEST
, DEVICE_TYPE
, DeviceTypeOID
);
1223 httpAddrFreeList(addrs
);
1227 * Then read any responses that come in over the next 3 seconds...
1230 endtime
= time(NULL
) + MaxRunTime
;
1234 while (time(NULL
) < endtime
)
1237 timeout
.tv_usec
= 0;
1239 FD_SET(ipv4
, &input
);
1241 FD_SET(ipv6
, &input
);
1243 fd
= ipv4
> ipv6
? ipv4
: ipv6
;
1244 if (select(fd
+ 1, &input
, NULL
, NULL
, &timeout
) < 0)
1246 fprintf(stderr
, "ERROR: %.3f select() for %d/%d failed: %s\n", run_time(),
1247 ipv4
, ipv6
, strerror(errno
));
1253 if (FD_ISSET(ipv4
, &input
))
1255 read_snmp_response(ipv4
);
1259 if (ipv6
>= 0 && FD_ISSET(ipv6
, &input
))
1261 read_snmp_response(ipv6
);
1268 * List devices with complete information...
1271 int sent_something
= 0;
1273 for (device
= (snmp_cache_t
*)cupsArrayFirst(Devices
);
1275 device
= (snmp_cache_t
*)cupsArrayNext(Devices
))
1276 if (!device
->sent
&& device
->info
&& device
->make_and_model
)
1279 list_device(device
);
1281 probe_device(device
);
1283 device
->sent
= sent_something
= 1;
1286 if (!sent_something
)
1291 debug_printf("DEBUG: %.3f Scan complete!\n", run_time());
1296 * 'try_connect()' - Try connecting on a port...
1299 static int /* O - 0 on success or -1 on error */
1300 try_connect(http_addr_t
*addr
, /* I - Socket address */
1301 const char *addrname
, /* I - Hostname or IP address */
1302 int port
) /* I - Port number */
1304 int fd
; /* Socket */
1305 int status
; /* Connection status */
1308 debug_printf("DEBUG: %.3f Trying %s://%s:%d...\n", run_time(),
1309 port
== 515 ? "lpd" : "socket", addrname
, port
);
1311 if ((fd
= socket(httpAddrFamily(addr
), SOCK_STREAM
, 0)) < 0)
1313 fprintf(stderr
, "ERROR: Unable to create socket: %s\n",
1318 _httpAddrSetPort(addr
, port
);
1322 status
= connect(fd
, (void *)addr
, (socklen_t
)httpAddrLength(addr
));
1332 * 'update_cache()' - Update a cached device...
1336 update_cache(snmp_cache_t
*device
, /* I - Device */
1337 const char *uri
, /* I - Device URI */
1338 const char *id
, /* I - Device ID */
1339 const char *make_model
) /* I - Device make and model */
1344 device
->uri
= strdup(uri
);
1351 device
->id
= strdup(id
);
1356 if (device
->make_and_model
)
1357 free(device
->make_and_model
);
1359 device
->make_and_model
= strdup(make_model
);
1362 list_device(device
);