static void
backend_init_supplies(
int snmp_fd, /* I - SNMP socket */
http_addr_t *addr) /* I - Printer address */
{
int i, /* Looping var */
type; /* Current marker type */
cups_file_t *cachefile; /* Cache file */
const char *cachedir; /* CUPS_CACHEDIR value */
char addrstr[1024], /* Address string */
cachefilename[1024], /* Cache filename */
description[CUPS_SNMP_MAX_STRING],
/* Device description string */
value[CUPS_MAX_SUPPLIES * (CUPS_SNMP_MAX_STRING * 4 + 3)],
/* Value string */
*ptr, /* Pointer into value string */
*name_ptr; /* Pointer into name string */
cups_snmp_t packet; /* SNMP response packet */
ppd_file_t *ppd; /* PPD file for this queue */
ppd_attr_t *ppdattr; /* cupsSNMPSupplies attribute */
static const char * const types[] = /* Supply types */
{
"other",
"unknown",
"toner",
"waste-toner",
"ink",
"ink-cartridge",
"ink-ribbon",
"waste-ink",
"opc",
"developer",
"fuser-oil",
"solid-wax",
"ribbon-wax",
"waste-wax",
"fuser",
"corona-wire",
"fuser-oil-wick",
"cleaner-unit",
"fuser-cleaning-pad",
"transfer-unit",
"toner-cartridge",
"fuser-oiler",
"water",
"waste-water",
"glue-water-additive",
"waste-paper",
"binding-supply",
"banding-supply",
"stitching-wire",
"shrink-wrap",
"paper-wrap",
"staples",
"inserts",
"covers"
};
/*
* Reset state information...
*/
current_addr = *addr;
current_state = -1;
num_supplies = -1;
charset = -1;
memset(supplies, 0, sizeof(supplies));
/*
* See if we should be getting supply levels via SNMP...
*/
if ((ppd = ppdOpenFile(getenv("PPD"))) == NULL ||
((ppdattr = ppdFindAttr(ppd, "cupsSNMPSupplies", NULL)) != NULL &&
ppdattr->value && _cups_strcasecmp(ppdattr->value, "true")))
{
ppdClose(ppd);
return;
}
if ((ppdattr = ppdFindAttr(ppd, "cupsSNMPQuirks", NULL)) != NULL)
{
if (!_cups_strcasecmp(ppdattr->value, "capacity"))
quirks |= CUPS_SNMP_CAPACITY;
}
ppdClose(ppd);
/*
* Get the device description...
*/
if (!_cupsSNMPWrite(snmp_fd, addr, CUPS_SNMP_VERSION_1,
_cupsSNMPDefaultCommunity(), CUPS_ASN1_GET_REQUEST, 1,
hrDeviceDescr))
return;
if (!_cupsSNMPRead(snmp_fd, &packet, CUPS_SUPPLY_TIMEOUT) ||
packet.object_type != CUPS_ASN1_OCTET_STRING)
{
strlcpy(description, "Unknown", sizeof(description));
num_supplies = 0;
}
else
strlcpy(description, (char *)packet.object_value.string.bytes,
sizeof(description));
fprintf(stderr, "DEBUG2: hrDeviceDesc=\"%s\"\n", description);
/*
* See if we have already queried this device...
*/
httpAddrString(addr, addrstr, sizeof(addrstr));
if ((cachedir = getenv("CUPS_CACHEDIR")) == NULL)
cachedir = CUPS_CACHEDIR;
snprintf(cachefilename, sizeof(cachefilename), "%s/%s.snmp", cachedir,
addrstr);
if ((cachefile = cupsFileOpen(cachefilename, "r")) != NULL)
{
/*
* Yes, read the cache file:
*
* 3 num_supplies charset
* device description
* supply structures...
*/
if (cupsFileGets(cachefile, value, sizeof(value)))
{
if (sscanf(value, "3 %d%d", &num_supplies, &charset) == 2 &&
num_supplies <= CUPS_MAX_SUPPLIES &&
cupsFileGets(cachefile, value, sizeof(value)))
{
if (!strcmp(description, value))
cupsFileRead(cachefile, (char *)supplies,
(size_t)num_supplies * sizeof(backend_supplies_t));
else
{
num_supplies = -1;
charset = -1;
}
}
else
{
num_supplies = -1;
charset = -1;
}
}
cupsFileClose(cachefile);
}
/*
* If the cache information isn't correct, scan for supplies...
*/
if (charset < 0)
{
/*
* Get the configured character set...
*/
int oid[CUPS_SNMP_MAX_OID]; /* OID for character set */
if (!_cupsSNMPWrite(snmp_fd, ¤t_addr, CUPS_SNMP_VERSION_1,
_cupsSNMPDefaultCommunity(), CUPS_ASN1_GET_REQUEST, 1,
prtGeneralCurrentLocalization))
return;
if (!_cupsSNMPRead(snmp_fd, &packet, CUPS_SUPPLY_TIMEOUT) ||
packet.object_type != CUPS_ASN1_INTEGER)
{
fprintf(stderr,
"DEBUG: prtGeneralCurrentLocalization type is %x, expected %x!\n",
packet.object_type, CUPS_ASN1_INTEGER);
return;
}
fprintf(stderr, "DEBUG2: prtGeneralCurrentLocalization=%d\n",
packet.object_value.integer);
_cupsSNMPCopyOID(oid, prtLocalizationCharacterSet, CUPS_SNMP_MAX_OID);
oid[prtLocalizationCharacterSetOffset - 2] = packet.object_value.integer;
if (!_cupsSNMPWrite(snmp_fd, ¤t_addr, CUPS_SNMP_VERSION_1,
_cupsSNMPDefaultCommunity(), CUPS_ASN1_GET_REQUEST, 1,
oid))
return;
if (!_cupsSNMPRead(snmp_fd, &packet, CUPS_SUPPLY_TIMEOUT) ||
packet.object_type != CUPS_ASN1_INTEGER)
{
fprintf(stderr,
"DEBUG: prtLocalizationCharacterSet type is %x, expected %x!\n",
packet.object_type, CUPS_ASN1_INTEGER);
return;
}
fprintf(stderr, "DEBUG2: prtLocalizationCharacterSet=%d\n",
packet.object_value.integer);
charset = packet.object_value.integer;
}
if (num_supplies < 0)
{
/*
* Walk the printer configuration information...
*/
_cupsSNMPWalk(snmp_fd, ¤t_addr, CUPS_SNMP_VERSION_1,
_cupsSNMPDefaultCommunity(), prtMarkerSuppliesEntry,
CUPS_SUPPLY_TIMEOUT, backend_walk_cb, NULL);
}
/*
* Save the cached information...
*/
if (num_supplies < 0)
num_supplies = 0;
if ((cachefile = cupsFileOpen(cachefilename, "w")) != NULL)
{
cupsFilePrintf(cachefile, "3 %d %d\n", num_supplies, charset);
cupsFilePrintf(cachefile, "%s\n", description);
if (num_supplies > 0)
cupsFileWrite(cachefile, (char *)supplies,
(size_t)num_supplies * sizeof(backend_supplies_t));
cupsFileClose(cachefile);
}
if (num_supplies <= 0)
return;
/*
* Get the colors...
*/
for (i = 0; i < num_supplies; i ++)
strlcpy(supplies[i].color, "none", sizeof(supplies[i].color));
_cupsSNMPWalk(snmp_fd, ¤t_addr, CUPS_SNMP_VERSION_1,
_cupsSNMPDefaultCommunity(), prtMarkerColorantValue,
CUPS_SUPPLY_TIMEOUT, backend_walk_cb, NULL);
/*
* Output the marker-colors attribute...
*/
for (i = 0, ptr = value; i < num_supplies; i ++, ptr += strlen(ptr))
{
if (i)
*ptr++ = ',';
strlcpy(ptr, supplies[i].color, sizeof(value) - (size_t)(ptr - value));
}
fprintf(stderr, "ATTR: marker-colors=%s\n", value);
/*
* Output the marker-names attribute (the double quoting is necessary to deal
* with embedded quotes and commas in the marker names...)
*/
for (i = 0, ptr = value; i < num_supplies; i ++)
{
if (i)
*ptr++ = ',';
*ptr++ = '\'';
*ptr++ = '\"';
for (name_ptr = supplies[i].name; *name_ptr;)
{
if (*name_ptr == '\\' || *name_ptr == '\"' || *name_ptr == '\'')
{
*ptr++ = '\\';
*ptr++ = '\\';
*ptr++ = '\\';
}
*ptr++ = *name_ptr++;
}
*ptr++ = '\"';
*ptr++ = '\'';
}
*ptr = '\0';
fprintf(stderr, "ATTR: marker-names=%s\n", value);
/*
* Output the marker-types attribute...
*/
for (i = 0, ptr = value; i < num_supplies; i ++, ptr += strlen(ptr))
{
if (i)
*ptr++ = ',';
type = supplies[i].type;
if (type < CUPS_TC_other || type > CUPS_TC_covers)
strlcpy(ptr, "unknown", sizeof(value) - (size_t)(ptr - value));
else
strlcpy(ptr, types[type - CUPS_TC_other], sizeof(value) - (size_t)(ptr - value));
}
fprintf(stderr, "ATTR: marker-types=%s\n", value);
}
static int /* O - 1 on success, 0 on error */
show_oid(int fd, /* I - SNMP socket */
const char *community, /* I - Community name */
http_addr_t *addr, /* I - Address to query */
const char *s, /* I - OID to query */
int walk) /* I - Walk OIDs? */
{
int i; /* Looping var */
int oid[CUPS_SNMP_MAX_OID]; /* OID */
cups_snmp_t packet; /* SNMP packet */
char temp[1024]; /* Temporary OID string */
if (!_cupsSNMPStringToOID(s, oid, sizeof(oid) / sizeof(oid[0])))
{
puts("testsnmp: Bad OID");
return (0);
}
if (walk)
{
printf("_cupsSNMPWalk(%s): ", _cupsSNMPOIDToString(oid, temp, sizeof(temp)));
if (_cupsSNMPWalk(fd, addr, CUPS_SNMP_VERSION_1, community, oid, 5.0,
print_packet, NULL) < 0)
{
printf("FAIL (%s)\n", strerror(errno));
return (0);
}
}
else
{
printf("_cupsSNMPWrite(%s): ", _cupsSNMPOIDToString(oid, temp, sizeof(temp)));
if (!_cupsSNMPWrite(fd, addr, CUPS_SNMP_VERSION_1, community,
CUPS_ASN1_GET_REQUEST, 1, oid))
{
printf("FAIL (%s)\n", strerror(errno));
return (0);
}
puts("PASS");
fputs("_cupsSNMPRead(5.0): ", stdout);
if (!_cupsSNMPRead(fd, &packet, 5.0))
{
puts("FAIL (timeout)");
return (0);
}
if (!_cupsSNMPIsOID(&packet, oid))
{
printf("FAIL (bad OID %d", packet.object_name[0]);
for (i = 1; packet.object_name[i] >= 0; i ++)
printf(".%d", packet.object_name[i]);
puts(")");
return (0);
}
if (packet.error)
{
printf("FAIL (%s)\n", packet.error);
return (0);
}
puts("PASS");
print_packet(&packet, NULL);
}
return (1);
}
int /* O - 0 on success, -1 on error */
backendSNMPSupplies(
int snmp_fd, /* I - SNMP socket */
http_addr_t *addr, /* I - Printer address */
int *page_count, /* O - Page count */
int *printer_state) /* O - Printer state */
{
if (!httpAddrEqual(addr, ¤t_addr))
backend_init_supplies(snmp_fd, addr);
else if (num_supplies > 0)
_cupsSNMPWalk(snmp_fd, ¤t_addr, CUPS_SNMP_VERSION_1,
_cupsSNMPDefaultCommunity(), prtMarkerSuppliesLevel,
CUPS_SUPPLY_TIMEOUT, backend_walk_cb, NULL);
if (page_count)
*page_count = -1;
if (printer_state)
*printer_state = -1;
if (num_supplies > 0)
{
int i, /* Looping var */
percent, /* Percent full */
new_state, /* New state value */
change_state, /* State change */
new_supply_state = 0; /* Supply state */
char value[CUPS_MAX_SUPPLIES * 4],
/* marker-levels value string */
*ptr; /* Pointer into value string */
cups_snmp_t packet; /* SNMP response packet */
/*
* Generate the marker-levels value string...
*/
for (i = 0, ptr = value; i < num_supplies; i ++, ptr += strlen(ptr))
{
if (supplies[i].max_capacity > 0 && supplies[i].level >= 0)
percent = 100 * supplies[i].level / supplies[i].max_capacity;
else if (supplies[i].level >= 0 && supplies[i].level <= 100 &&
(quirks & CUPS_SNMP_CAPACITY))
percent = supplies[i].level;
else
percent = 50;
if (supplies[i].sclass == CUPS_TC_receptacleThatIsFilled)
percent = 100 - percent;
if (percent <= 5)
{
switch (supplies[i].type)
{
case CUPS_TC_toner :
case CUPS_TC_tonerCartridge :
if (percent <= 1)
new_supply_state |= CUPS_TONER_EMPTY;
else
new_supply_state |= CUPS_TONER_LOW;
break;
case CUPS_TC_ink :
case CUPS_TC_inkCartridge :
case CUPS_TC_inkRibbon :
case CUPS_TC_solidWax :
case CUPS_TC_ribbonWax :
if (percent <= 1)
new_supply_state |= CUPS_MARKER_SUPPLY_EMPTY;
else
new_supply_state |= CUPS_MARKER_SUPPLY_LOW;
break;
case CUPS_TC_developer :
if (percent <= 1)
new_supply_state |= CUPS_DEVELOPER_EMPTY;
else
new_supply_state |= CUPS_DEVELOPER_LOW;
break;
case CUPS_TC_coronaWire :
case CUPS_TC_fuser :
case CUPS_TC_opc :
case CUPS_TC_transferUnit :
if (percent <= 1)
new_supply_state |= CUPS_OPC_LIFE_OVER;
else
new_supply_state |= CUPS_OPC_NEAR_EOL;
break;
#if 0 /* Because no two vendors report waste containers the same, disable SNMP reporting of same */
case CUPS_TC_wasteInk :
case CUPS_TC_wastePaper :
case CUPS_TC_wasteToner :
case CUPS_TC_wasteWater :
case CUPS_TC_wasteWax :
if (percent <= 1)
new_supply_state |= CUPS_WASTE_FULL;
else
new_supply_state |= CUPS_WASTE_ALMOST_FULL;
break;
#endif /* 0 */
case CUPS_TC_cleanerUnit :
case CUPS_TC_fuserCleaningPad :
if (percent <= 1)
new_supply_state |= CUPS_CLEANER_LIFE_OVER;
else
new_supply_state |= CUPS_CLEANER_NEAR_EOL;
break;
}
}
if (i)
*ptr++ = ',';
if ((supplies[i].max_capacity > 0 || (quirks & CUPS_SNMP_CAPACITY)) &&
supplies[i].level >= 0)
snprintf(ptr, sizeof(value) - (size_t)(ptr - value), "%d", percent);
else
strlcpy(ptr, "-1", sizeof(value) - (size_t)(ptr - value));
}
fprintf(stderr, "ATTR: marker-levels=%s\n", value);
if (supply_state < 0)
change_state = 0xffff;
else
change_state = supply_state ^ new_supply_state;
fprintf(stderr, "DEBUG: new_supply_state=%x, change_state=%x\n",
new_supply_state, change_state);
for (i = 0;
i < (int)(sizeof(supply_states) / sizeof(supply_states[0]));
i ++)
if (change_state & supply_states[i].bit)
{
fprintf(stderr, "STATE: %c%s\n",
(new_supply_state & supply_states[i].bit) ? '+' : '-',
supply_states[i].keyword);
}
supply_state = new_supply_state;
/*
* Get the current printer status bits...
*/
if (!_cupsSNMPWrite(snmp_fd, addr, CUPS_SNMP_VERSION_1,
_cupsSNMPDefaultCommunity(), CUPS_ASN1_GET_REQUEST, 1,
hrPrinterDetectedErrorState))
return (-1);
if (!_cupsSNMPRead(snmp_fd, &packet, CUPS_SUPPLY_TIMEOUT) ||
packet.object_type != CUPS_ASN1_OCTET_STRING)
return (-1);
if (packet.object_value.string.num_bytes == 2)
new_state = (packet.object_value.string.bytes[0] << 8) |
packet.object_value.string.bytes[1];
else if (packet.object_value.string.num_bytes == 1)
new_state = (packet.object_value.string.bytes[0] << 8);
else
new_state = 0;
if (current_state < 0)
change_state = 0xffff;
else
change_state = current_state ^ new_state;
fprintf(stderr, "DEBUG: new_state=%x, change_state=%x\n", new_state,
change_state);
for (i = 0;
i < (int)(sizeof(printer_states) / sizeof(printer_states[0]));
i ++)
if (change_state & printer_states[i].bit)
{
fprintf(stderr, "STATE: %c%s\n",
(new_state & printer_states[i].bit) ? '+' : '-',
printer_states[i].keyword);
}
current_state = new_state;
/*
* Get the current printer state...
*/
if (printer_state)
{
if (!_cupsSNMPWrite(snmp_fd, addr, CUPS_SNMP_VERSION_1,
_cupsSNMPDefaultCommunity(), CUPS_ASN1_GET_REQUEST, 1,
hrPrinterStatus))
return (-1);
if (!_cupsSNMPRead(snmp_fd, &packet, CUPS_SUPPLY_TIMEOUT) ||
packet.object_type != CUPS_ASN1_INTEGER)
return (-1);
*printer_state = packet.object_value.integer;
}
/*
* Get the current page count...
*/
if (page_count)
{
if (!_cupsSNMPWrite(snmp_fd, addr, CUPS_SNMP_VERSION_1,
_cupsSNMPDefaultCommunity(), CUPS_ASN1_GET_REQUEST, 1,
prtMarkerLifeCount))
return (-1);
if (!_cupsSNMPRead(snmp_fd, &packet, CUPS_SUPPLY_TIMEOUT) ||
packet.object_type != CUPS_ASN1_COUNTER)
return (-1);
*page_count = packet.object_value.counter;
}
return (0);
}
else
return (-1);
}
