apps/snmp/snmp_asn1.c

59   u8_t data;
99     data = 0x80 | length_bytes_required; /* extended length definition, 1 length byte follows */
101     PBUF_OP_EXEC(snmp_pbuf_stream_write(pbuf_stream, data));
106         data = (u8_t)(tlv->value_len >> 8);
109         data = 0x00;
112       PBUF_OP_EXEC(snmp_pbuf_stream_write(pbuf_stream, data));
118   data = (u8_t)(tlv->value_len & 0xFF);
119   PBUF_OP_EXEC(snmp_pbuf_stream_write(pbuf_stream, data));
125  * Encodes raw data (octet string, opaque) into a pbuf chained ASN1 msg.
128  * @param raw_len raw data length
129  * @param raw points raw data
358   u8_t data;
361   PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
362   tlv->type = data;
371   PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
373   if (data < 0x80) { /* short form */
375     tlv->value_len  = data;
376   } else if (data > 0x80) { /* long form */
377     u8_t length_bytes = data - 0x80;
389       PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
391       tlv->value_len |= data;
400   } else { /* data == 0x80 indefinite length form */
423   u8_t data;
426     PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
429     if (((len == 5) && (data == 0x00)) || ((len < 5) && ((data & 0x80) == 0))) {
430       *value = data;
434         PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
438         *value |= data;
461   u8_t data;
464     PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
466     if (data & 0x80) {
469       *value = (*value << 8) | data;
472       *value = data;
477       PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
478       *value = (*value << 8) | data;
501   u8_t data;
510     PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
514     if (data == 0x2B) {
520     } else if (data < 40) {
523       *oid_ptr = data;
525     } else if (data < 80) {
528       *oid_ptr = data - 40;
533       *oid_ptr = data - 80;
543     PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
546     if ((data & 0x80) == 0x00) {
548       *oid_ptr = data;
551       u32_t sub_id = (data & ~0x80);
552       while ((len > 0) && ((data & 0x80) != 0)) {
553         PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
556         sub_id = (sub_id << 7) + (data & ~0x80);
559       if ((data & 0x80) != 0) {
578  * Decodes (copies) raw data (ip-addresses, octet strings, opaque encoding)
582  * @param len length of the coded raw data (zero is valid, e.g. empty string!)
646   u8_t data;
649     PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
652     if (((len == 9) && (data == 0x00)) || ((len < 9) && ((data & 0x80) == 0))) {
653       *value = data;
657         PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
659         *value |= data;