int /* O - Number of OIDs found or -1 on error */ _cupsSNMPWalk(int fd, /* I - SNMP socket */ http_addr_t *address, /* I - Address to query */ int version, /* I - SNMP version */ const char *community,/* I - Community name */ const int *prefix, /* I - OID prefix */ double timeout, /* I - Timeout for each response in seconds */ cups_snmp_cb_t cb, /* I - Function to call for each response */ void *data) /* I - User data pointer that is passed to the callback function */ { int count = 0; /* Number of OIDs found */ int request_id = 0; /* Current request ID */ cups_snmp_t packet; /* Current response packet */ int lastoid[CUPS_SNMP_MAX_OID]; /* Last OID we got */ /* * Range check input... */ DEBUG_printf(("4_cupsSNMPWalk(fd=%d, address=%p, version=%d, " "community=\"%s\", prefix=%p, timeout=%.1f, cb=%p, data=%p)", fd, address, version, community, prefix, timeout, cb, data)); if (fd < 0 || !address || version != CUPS_SNMP_VERSION_1 || !community || !prefix || !cb) { DEBUG_puts("5_cupsSNMPWalk: Returning -1"); return (-1); } /* * Copy the OID prefix and then loop until we have no more OIDs... */ _cupsSNMPCopyOID(packet.object_name, prefix, CUPS_SNMP_MAX_OID); lastoid[0] = -1; for (;;) { request_id ++; if (!_cupsSNMPWrite(fd, address, version, community, CUPS_ASN1_GET_NEXT_REQUEST, request_id, packet.object_name)) { DEBUG_puts("5_cupsSNMPWalk: Returning -1"); return (-1); } if (!_cupsSNMPRead(fd, &packet, timeout)) { DEBUG_puts("5_cupsSNMPWalk: Returning -1"); return (-1); } if (!_cupsSNMPIsOIDPrefixed(&packet, prefix) || _cupsSNMPIsOID(&packet, lastoid)) { DEBUG_printf(("5_cupsSNMPWalk: Returning %d", count)); return (count); } if (packet.error || packet.error_status) { DEBUG_printf(("5_cupsSNMPWalk: Returning %d", count > 0 ? count : -1)); return (count > 0 ? count : -1); } _cupsSNMPCopyOID(lastoid, packet.object_name, CUPS_SNMP_MAX_OID); count ++; (*cb)(&packet, data); } }
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; } }