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cups/backend/snmp-supplies.c

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Import Upstream version 2.3.1
2022-05-13 20:08:20 +08:00
/*
* SNMP supplies functions for CUPS.
*
* Copyright © 2008-2015 by Apple Inc.
*
* Licensed under Apache License v2.0. See the file "LICENSE" for more
* information.
*/
/*
* Include necessary headers.
*/
#include "backend-private.h"
#include <cups/ppd-private.h>
#include <cups/array.h>
/*
* Local constants...
*/
#define CUPS_MAX_SUPPLIES 32 /* Maximum number of supplies for a printer */
#define CUPS_SUPPLY_TIMEOUT 2.0 /* Timeout for SNMP lookups */
#define CUPS_DEVELOPER_LOW 0x0001
#define CUPS_DEVELOPER_EMPTY 0x0002
#define CUPS_MARKER_SUPPLY_LOW 0x0004
#define CUPS_MARKER_SUPPLY_EMPTY 0x0008
#define CUPS_OPC_NEAR_EOL 0x0010
#define CUPS_OPC_LIFE_OVER 0x0020
#define CUPS_TONER_LOW 0x0040
#define CUPS_TONER_EMPTY 0x0080
#define CUPS_WASTE_ALMOST_FULL 0x0100
#define CUPS_WASTE_FULL 0x0200
#define CUPS_CLEANER_NEAR_EOL 0x0400 /* Proposed JPS3 */
#define CUPS_CLEANER_LIFE_OVER 0x0800 /* Proposed JPS3 */
#define CUPS_SNMP_NONE 0x0000
#define CUPS_SNMP_CAPACITY 0x0001 /* Supply levels reported as percentages */
/*
* Local structures...
*/
typedef struct /**** Printer supply data ****/
{
char name[CUPS_SNMP_MAX_STRING], /* Name of supply */
color[8]; /* Color: "#RRGGBB" or "none" */
int colorant, /* Colorant index */
sclass, /* Supply class */
type, /* Supply type */
max_capacity, /* Maximum capacity */
level; /* Current level value */
} backend_supplies_t;
typedef struct /**** Printer state table ****/
{
int bit; /* State bit */
const char *keyword; /* IPP printer-state-reasons keyword */
} backend_state_t;
/*
* Local globals...
*/
static http_addr_t current_addr; /* Current address */
static int current_state = -1;
/* Current device state bits */
static int charset = -1; /* Character set for supply names */
static unsigned quirks = CUPS_SNMP_NONE;
/* Quirks we have to work around */
static int num_supplies = 0;
/* Number of supplies found */
static backend_supplies_t supplies[CUPS_MAX_SUPPLIES];
/* Supply information */
static int supply_state = -1;
/* Supply state info */
static const int hrDeviceDescr[] =
{ CUPS_OID_hrDeviceDescr, 1, -1 };
/* Device description OID */
static const int hrPrinterStatus[] =
{ CUPS_OID_hrPrinterStatus, 1, -1 };
/* Current state OID */
static const int hrPrinterDetectedErrorState[] =
{ CUPS_OID_hrPrinterDetectedErrorState, 1, -1 };
/* Current printer state bits OID */
static const int prtGeneralCurrentLocalization[] =
{ CUPS_OID_prtGeneralCurrentLocalization, 1, -1 };
static const int prtLocalizationCharacterSet[] =
{ CUPS_OID_prtLocalizationCharacterSet, 1, 1, -1 },
prtLocalizationCharacterSetOffset =
(sizeof(prtLocalizationCharacterSet) /
sizeof(prtLocalizationCharacterSet[0]));
static const int prtMarkerColorantValue[] =
{ CUPS_OID_prtMarkerColorantValue, -1 },
/* Colorant OID */
prtMarkerColorantValueOffset =
(sizeof(prtMarkerColorantValue) /
sizeof(prtMarkerColorantValue[0]));
/* Offset to colorant index */
static const int prtMarkerLifeCount[] =
{ CUPS_OID_prtMarkerLifeCount, 1, 1, -1 };
/* Page counter OID */
static const int prtMarkerSuppliesEntry[] =
{ CUPS_OID_prtMarkerSuppliesEntry, -1 };
/* Supplies OID */
static const int prtMarkerSuppliesColorantIndex[] =
{ CUPS_OID_prtMarkerSuppliesColorantIndex, -1 },
/* Colorant index OID */
prtMarkerSuppliesColorantIndexOffset =
(sizeof(prtMarkerSuppliesColorantIndex) /
sizeof(prtMarkerSuppliesColorantIndex[0]));
/* Offset to supply index */
static const int prtMarkerSuppliesDescription[] =
{ CUPS_OID_prtMarkerSuppliesDescription, -1 },
/* Description OID */
prtMarkerSuppliesDescriptionOffset =
(sizeof(prtMarkerSuppliesDescription) /
sizeof(prtMarkerSuppliesDescription[0]));
/* Offset to supply index */
static const int prtMarkerSuppliesLevel[] =
{ CUPS_OID_prtMarkerSuppliesLevel, -1 },
/* Level OID */
prtMarkerSuppliesLevelOffset =
(sizeof(prtMarkerSuppliesLevel) /
sizeof(prtMarkerSuppliesLevel[0]));
/* Offset to supply index */
static const int prtMarkerSuppliesMaxCapacity[] =
{ CUPS_OID_prtMarkerSuppliesMaxCapacity, -1 },
/* Max capacity OID */
prtMarkerSuppliesMaxCapacityOffset =
(sizeof(prtMarkerSuppliesMaxCapacity) /
sizeof(prtMarkerSuppliesMaxCapacity[0]));
/* Offset to supply index */
static const int prtMarkerSuppliesClass[] =
{ CUPS_OID_prtMarkerSuppliesClass, -1 },
/* Class OID */
prtMarkerSuppliesClassOffset =
(sizeof(prtMarkerSuppliesClass) /
sizeof(prtMarkerSuppliesClass[0]));
/* Offset to supply index */
static const int prtMarkerSuppliesType[] =
{ CUPS_OID_prtMarkerSuppliesType, -1 },
/* Type OID */
prtMarkerSuppliesTypeOffset =
(sizeof(prtMarkerSuppliesType) /
sizeof(prtMarkerSuppliesType[0]));
/* Offset to supply index */
static const int prtMarkerSuppliesSupplyUnit[] =
{ CUPS_OID_prtMarkerSuppliesSupplyUnit, -1 },
/* Units OID */
prtMarkerSuppliesSupplyUnitOffset =
(sizeof(prtMarkerSuppliesSupplyUnit) /
sizeof(prtMarkerSuppliesSupplyUnit[0]));
/* Offset to supply index */
static const backend_state_t printer_states[] =
{
/* { CUPS_TC_lowPaper, "media-low-report" }, */
{ CUPS_TC_noPaper | CUPS_TC_inputTrayEmpty, "media-empty-warning" },
/* { CUPS_TC_lowToner, "toner-low-report" }, */ /* now use prtMarkerSupplies */
/* { CUPS_TC_noToner, "toner-empty-warning" }, */ /* now use prtMarkerSupplies */
{ CUPS_TC_doorOpen, "door-open-report" },
{ CUPS_TC_jammed, "media-jam-warning" },
/* { CUPS_TC_offline, "offline-report" }, */ /* unreliable */
/* { CUPS_TC_serviceRequested | CUPS_TC_overduePreventMaint, "service-needed-warning" }, */ /* unreliable */
{ CUPS_TC_inputTrayMissing, "input-tray-missing-warning" },
{ CUPS_TC_outputTrayMissing, "output-tray-missing-warning" },
{ CUPS_TC_markerSupplyMissing, "marker-supply-missing-warning" },
{ CUPS_TC_outputNearFull, "output-area-almost-full-report" },
{ CUPS_TC_outputFull, "output-area-full-warning" }
};
static const backend_state_t supply_states[] =
{
{ CUPS_DEVELOPER_LOW, "developer-low-report" },
{ CUPS_DEVELOPER_EMPTY, "developer-empty-warning" },
{ CUPS_MARKER_SUPPLY_LOW, "marker-supply-low-report" },
{ CUPS_MARKER_SUPPLY_EMPTY, "marker-supply-empty-warning" },
{ CUPS_OPC_NEAR_EOL, "opc-near-eol-report" },
{ CUPS_OPC_LIFE_OVER, "opc-life-over-warning" },
{ CUPS_TONER_LOW, "toner-low-report" },
{ CUPS_TONER_EMPTY, "toner-empty-warning" },
{ CUPS_WASTE_ALMOST_FULL, "waste-receptacle-almost-full-report" },
{ CUPS_WASTE_FULL, "waste-receptacle-full-warning" },
{ CUPS_CLEANER_NEAR_EOL, "cleaner-life-almost-over-report" },
{ CUPS_CLEANER_LIFE_OVER, "cleaner-life-over-warning" },
};
/*
* Local functions...
*/
static void backend_init_supplies(int snmp_fd, http_addr_t *addr);
static void backend_walk_cb(cups_snmp_t *packet, void *data);
static void utf16_to_utf8(cups_utf8_t *dst, const unsigned char *src,
size_t srcsize, size_t dstsize, int le);
/*
* 'backendSNMPSupplies()' - Get the current supplies for a device.
*/
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, &current_addr))
backend_init_supplies(snmp_fd, addr);
else if (num_supplies > 0)
_cupsSNMPWalk(snmp_fd, &current_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);
}
/*
* 'backend_init_supplies()' - Initialize the supplies list.
*/
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 */
const char *community; /* SNMP community name */
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...
*/
community = _cupsSNMPDefaultCommunity();
if (!*community)
return;
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,
community, 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, &current_addr, CUPS_SNMP_VERSION_1,
community, 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, &current_addr, CUPS_SNMP_VERSION_1,
community, 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, &current_addr, CUPS_SNMP_VERSION_1,
community, 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, &current_addr, CUPS_SNMP_VERSION_1,
community, 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);
}
/*
* 'backend_walk_cb()' - Interpret the supply value responses.
*/
static void
backend_walk_cb(cups_snmp_t *packet, /* I - SNMP packet */
void *data) /* I - User data (unused) */
{
int i, j, k; /* Looping vars */
static const char * const colors[][2] =
{ /* Standard color names */
{ "black", "#000000" },
{ "blue", "#0000FF" },
{ "brown", "#A52A2A" },
{ "cyan", "#00FFFF" },
{ "dark-gray", "#404040" },
{ "dark gray", "#404040" },
{ "dark-yellow", "#FFCC00" },
{ "dark yellow", "#FFCC00" },
{ "gold", "#FFD700" },
{ "gray", "#808080" },
{ "green", "#00FF00" },
{ "light-black", "#606060" },
{ "light black", "#606060" },
{ "light-cyan", "#E0FFFF" },
{ "light cyan", "#E0FFFF" },
{ "light-gray", "#D3D3D3" },
{ "light gray", "#D3D3D3" },
{ "light-magenta", "#FF77FF" },
{ "light magenta", "#FF77FF" },
{ "magenta", "#FF00FF" },
{ "orange", "#FFA500" },
{ "red", "#FF0000" },
{ "silver", "#C0C0C0" },
{ "white", "#FFFFFF" },
{ "yellow", "#FFFF00" }
};
(void)data;
if (_cupsSNMPIsOIDPrefixed(packet, prtMarkerColorantValue) &&
packet->object_type == CUPS_ASN1_OCTET_STRING)
{
/*
* Get colorant...
*/
i = packet->object_name[prtMarkerColorantValueOffset];
fprintf(stderr, "DEBUG2: prtMarkerColorantValue.1.%d = \"%s\"\n", i,
(char *)packet->object_value.string.bytes);
for (j = 0; j < num_supplies; j ++)
if (supplies[j].colorant == i)
{
for (k = 0; k < (int)(sizeof(colors) / sizeof(colors[0])); k ++)
if (!_cups_strcasecmp(colors[k][0],
(char *)packet->object_value.string.bytes))
{
strlcpy(supplies[j].color, colors[k][1], sizeof(supplies[j].color));
break;
}
}
}
else if (_cupsSNMPIsOIDPrefixed(packet, prtMarkerSuppliesColorantIndex))
{
/*
* Get colorant index...
*/
i = packet->object_name[prtMarkerSuppliesColorantIndexOffset];
if (i < 1 || i > CUPS_MAX_SUPPLIES ||
packet->object_type != CUPS_ASN1_INTEGER)
return;
fprintf(stderr, "DEBUG2: prtMarkerSuppliesColorantIndex.1.%d = %d\n", i,
packet->object_value.integer);
if (i > num_supplies)
num_supplies = i;
supplies[i - 1].colorant = packet->object_value.integer;
}
else if (_cupsSNMPIsOIDPrefixed(packet, prtMarkerSuppliesDescription))
{
/*
* Get supply name/description...
*/
i = packet->object_name[prtMarkerSuppliesDescriptionOffset];
if (i < 1 || i > CUPS_MAX_SUPPLIES ||
packet->object_type != CUPS_ASN1_OCTET_STRING)
return;
if (i > num_supplies)
num_supplies = i;
switch (charset)
{
case CUPS_TC_csASCII :
case CUPS_TC_csUTF8 :
case CUPS_TC_csUnicodeASCII :
strlcpy(supplies[i - 1].name,
(char *)packet->object_value.string.bytes,
sizeof(supplies[0].name));
break;
case CUPS_TC_csISOLatin1 :
case CUPS_TC_csUnicodeLatin1 :
cupsCharsetToUTF8((cups_utf8_t *)supplies[i - 1].name,
(char *)packet->object_value.string.bytes,
sizeof(supplies[0].name), CUPS_ISO8859_1);
break;
case CUPS_TC_csShiftJIS :
case CUPS_TC_csWindows31J : /* Close enough for our purposes */
cupsCharsetToUTF8((cups_utf8_t *)supplies[i - 1].name,
(char *)packet->object_value.string.bytes,
sizeof(supplies[0].name), CUPS_JIS_X0213);
break;
case CUPS_TC_csUCS4 :
case CUPS_TC_csUTF32 :
case CUPS_TC_csUTF32BE :
case CUPS_TC_csUTF32LE :
cupsUTF32ToUTF8((cups_utf8_t *)supplies[i - 1].name,
(cups_utf32_t *)packet->object_value.string.bytes,
sizeof(supplies[0].name));
break;
case CUPS_TC_csUnicode :
case CUPS_TC_csUTF16BE :
case CUPS_TC_csUTF16LE :
utf16_to_utf8((cups_utf8_t *)supplies[i - 1].name,
packet->object_value.string.bytes,
packet->object_value.string.num_bytes,
sizeof(supplies[0].name), charset == CUPS_TC_csUTF16LE);
break;
default :
/*
* If we get here, the printer is using an unknown character set and
* we just want to copy characters that look like ASCII...
*/
{
char *src, *dst; /* Pointers into strings */
/*
* Loop safe because both the object_value and supplies char arrays
* are CUPS_SNMP_MAX_STRING elements long.
*/
for (src = (char *)packet->object_value.string.bytes,
dst = supplies[i - 1].name;
*src;
src ++)
{
if ((*src & 0x80) || *src < ' ' || *src == 0x7f)
*dst++ = '?';
else
*dst++ = *src;
}
*dst = '\0';
}
break;
}
fprintf(stderr, "DEBUG2: prtMarkerSuppliesDescription.1.%d = \"%s\"\n", i,
supplies[i - 1].name);
}
else if (_cupsSNMPIsOIDPrefixed(packet, prtMarkerSuppliesLevel))
{
/*
* Get level...
*/
i = packet->object_name[prtMarkerSuppliesLevelOffset];
if (i < 1 || i > CUPS_MAX_SUPPLIES ||
packet->object_type != CUPS_ASN1_INTEGER)
return;
fprintf(stderr, "DEBUG2: prtMarkerSuppliesLevel.1.%d = %d\n", i,
packet->object_value.integer);
if (i > num_supplies)
num_supplies = i;
supplies[i - 1].level = packet->object_value.integer;
}
else if (_cupsSNMPIsOIDPrefixed(packet, prtMarkerSuppliesMaxCapacity) &&
!(quirks & CUPS_SNMP_CAPACITY))
{
/*
* Get max capacity...
*/
i = packet->object_name[prtMarkerSuppliesMaxCapacityOffset];
if (i < 1 || i > CUPS_MAX_SUPPLIES ||
packet->object_type != CUPS_ASN1_INTEGER)
return;
fprintf(stderr, "DEBUG2: prtMarkerSuppliesMaxCapacity.1.%d = %d\n", i,
packet->object_value.integer);
if (i > num_supplies)
num_supplies = i;
if (supplies[i - 1].max_capacity == 0 &&
packet->object_value.integer > 0)
supplies[i - 1].max_capacity = packet->object_value.integer;
}
else if (_cupsSNMPIsOIDPrefixed(packet, prtMarkerSuppliesClass))
{
/*
* Get marker class...
*/
i = packet->object_name[prtMarkerSuppliesClassOffset];
if (i < 1 || i > CUPS_MAX_SUPPLIES ||
packet->object_type != CUPS_ASN1_INTEGER)
return;
fprintf(stderr, "DEBUG2: prtMarkerSuppliesClass.1.%d = %d\n", i,
packet->object_value.integer);
if (i > num_supplies)
num_supplies = i;
supplies[i - 1].sclass = packet->object_value.integer;
}
else if (_cupsSNMPIsOIDPrefixed(packet, prtMarkerSuppliesType))
{
/*
* Get marker type...
*/
i = packet->object_name[prtMarkerSuppliesTypeOffset];
if (i < 1 || i > CUPS_MAX_SUPPLIES ||
packet->object_type != CUPS_ASN1_INTEGER)
return;
fprintf(stderr, "DEBUG2: prtMarkerSuppliesType.1.%d = %d\n", i,
packet->object_value.integer);
if (i > num_supplies)
num_supplies = i;
supplies[i - 1].type = packet->object_value.integer;
}
else if (_cupsSNMPIsOIDPrefixed(packet, prtMarkerSuppliesSupplyUnit))
{
/*
* Get units for capacity...
*/
i = packet->object_name[prtMarkerSuppliesSupplyUnitOffset];
if (i < 1 || i > CUPS_MAX_SUPPLIES ||
packet->object_type != CUPS_ASN1_INTEGER)
return;
fprintf(stderr, "DEBUG2: prtMarkerSuppliesSupplyUnit.1.%d = %d\n", i,
packet->object_value.integer);
if (i > num_supplies)
num_supplies = i;
if (packet->object_value.integer == CUPS_TC_percent)
supplies[i - 1].max_capacity = 100;
}
}
/*
* 'utf16_to_utf8()' - Convert UTF-16 text to UTF-8.
*/
static void
utf16_to_utf8(
cups_utf8_t *dst, /* I - Destination buffer */
const unsigned char *src, /* I - Source string */
size_t srcsize, /* I - Size of source string */
size_t dstsize, /* I - Size of destination buffer */
int le) /* I - Source is little-endian? */
{
cups_utf32_t ch, /* Current character */
temp[CUPS_SNMP_MAX_STRING],
/* UTF-32 string */
*ptr; /* Pointer into UTF-32 string */
for (ptr = temp; srcsize >= 2;)
{
if (le)
ch = (cups_utf32_t)(src[0] | (src[1] << 8));
else
ch = (cups_utf32_t)((src[0] << 8) | src[1]);
src += 2;
srcsize -= 2;
if (ch >= 0xd800 && ch <= 0xdbff && srcsize >= 2)
{
/*
* Multi-word UTF-16 char...
*/
cups_utf32_t lch; /* Lower word */
if (le)
lch = (cups_utf32_t)(src[0] | (src[1] << 8));
else
lch = (cups_utf32_t)((src[0] << 8) | src[1]);
if (lch >= 0xdc00 && lch <= 0xdfff)
{
src += 2;
srcsize -= 2;
ch = (((ch & 0x3ff) << 10) | (lch & 0x3ff)) + 0x10000;
}
}
if (ptr < (temp + CUPS_SNMP_MAX_STRING - 1))
*ptr++ = ch;
}
*ptr = '\0';
cupsUTF32ToUTF8(dst, temp, (int)dstsize);
}