Maintained by: NLnet Labs
Macros | Typedefs | Enumerations
pkthdr.h File Reference

Contains functions that translate dns data from the wire format (as sent by servers and clients) to the internal structures for the packet header. More...

Macros

#define LDNS_HEADER_SIZE   12
 
#define LDNS_RD_MASK   0x01U
 
#define LDNS_RD_SHIFT   0
 
#define LDNS_RD_WIRE(wirebuf)   (*(wirebuf+2) & LDNS_RD_MASK)
 
#define LDNS_RD_SET(wirebuf)   (*(wirebuf+2) |= LDNS_RD_MASK)
 
#define LDNS_RD_CLR(wirebuf)   (*(wirebuf+2) &= ~LDNS_RD_MASK)
 
#define LDNS_TC_MASK   0x02U
 
#define LDNS_TC_SHIFT   1
 
#define LDNS_TC_WIRE(wirebuf)   (*(wirebuf+2) & LDNS_TC_MASK)
 
#define LDNS_TC_SET(wirebuf)   (*(wirebuf+2) |= LDNS_TC_MASK)
 
#define LDNS_TC_CLR(wirebuf)   (*(wirebuf+2) &= ~LDNS_TC_MASK)
 
#define LDNS_AA_MASK   0x04U
 
#define LDNS_AA_SHIFT   2
 
#define LDNS_AA_WIRE(wirebuf)   (*(wirebuf+2) & LDNS_AA_MASK)
 
#define LDNS_AA_SET(wirebuf)   (*(wirebuf+2) |= LDNS_AA_MASK)
 
#define LDNS_AA_CLR(wirebuf)   (*(wirebuf+2) &= ~LDNS_AA_MASK)
 
#define LDNS_OPCODE_MASK   0x78U
 
#define LDNS_OPCODE_SHIFT   3
 
#define LDNS_OPCODE_WIRE(wirebuf)   ((*(wirebuf+2) & LDNS_OPCODE_MASK) >> LDNS_OPCODE_SHIFT)
 
#define LDNS_OPCODE_SET(wirebuf, opcode)   (*(wirebuf+2) = ((*(wirebuf+2)) & ~LDNS_OPCODE_MASK) | ((opcode) << LDNS_OPCODE_SHIFT))
 
#define LDNS_QR_MASK   0x80U
 
#define LDNS_QR_SHIFT   7
 
#define LDNS_QR_WIRE(wirebuf)   (*(wirebuf+2) & LDNS_QR_MASK)
 
#define LDNS_QR_SET(wirebuf)   (*(wirebuf+2) |= LDNS_QR_MASK)
 
#define LDNS_QR_CLR(wirebuf)   (*(wirebuf+2) &= ~LDNS_QR_MASK)
 
#define LDNS_RCODE_MASK   0x0fU
 
#define LDNS_RCODE_SHIFT   0
 
#define LDNS_RCODE_WIRE(wirebuf)   (*(wirebuf+3) & LDNS_RCODE_MASK)
 
#define LDNS_RCODE_SET(wirebuf, rcode)   (*(wirebuf+3) = ((*(wirebuf+3)) & ~LDNS_RCODE_MASK) | (rcode))
 
#define LDNS_CD_MASK   0x10U
 
#define LDNS_CD_SHIFT   4
 
#define LDNS_CD_WIRE(wirebuf)   (*(wirebuf+3) & LDNS_CD_MASK)
 
#define LDNS_CD_SET(wirebuf)   (*(wirebuf+3) |= LDNS_CD_MASK)
 
#define LDNS_CD_CLR(wirebuf)   (*(wirebuf+3) &= ~LDNS_CD_MASK)
 
#define LDNS_AD_MASK   0x20U
 
#define LDNS_AD_SHIFT   5
 
#define LDNS_AD_WIRE(wirebuf)   (*(wirebuf+3) & LDNS_AD_MASK)
 
#define LDNS_AD_SET(wirebuf)   (*(wirebuf+3) |= LDNS_AD_MASK)
 
#define LDNS_AD_CLR(wirebuf)   (*(wirebuf+3) &= ~LDNS_AD_MASK)
 
#define LDNS_Z_MASK   0x40U
 
#define LDNS_Z_SHIFT   6
 
#define LDNS_Z_WIRE(wirebuf)   (*(wirebuf+3) & LDNS_Z_MASK)
 
#define LDNS_Z_SET(wirebuf)   (*(wirebuf+3) |= LDNS_Z_MASK)
 
#define LDNS_Z_CLR(wirebuf)   (*(wirebuf+3) &= ~LDNS_Z_MASK)
 
#define LDNS_RA_MASK   0x80U
 
#define LDNS_RA_SHIFT   7
 
#define LDNS_RA_WIRE(wirebuf)   (*(wirebuf+3) & LDNS_RA_MASK)
 
#define LDNS_RA_SET(wirebuf)   (*(wirebuf+3) |= LDNS_RA_MASK)
 
#define LDNS_RA_CLR(wirebuf)   (*(wirebuf+3) &= ~LDNS_RA_MASK)
 
#define LDNS_ID_WIRE(wirebuf)   (sldns_read_uint16(wirebuf))
 
#define LDNS_ID_SET(wirebuf, id)   (sldns_write_uint16(wirebuf, id))
 
#define LDNS_QDCOUNT_OFF   4
 
#define LDNS_QDCOUNT(wirebuf)   (sldns_read_uint16(wirebuf+LDNS_QDCOUNT_OFF))
 
#define LDNS_ANCOUNT_OFF   6
 
#define LDNS_ANCOUNT(wirebuf)   (sldns_read_uint16(wirebuf+LDNS_ANCOUNT_OFF))
 
#define LDNS_NSCOUNT_OFF   8
 
#define LDNS_NSCOUNT(wirebuf)   (sldns_read_uint16(wirebuf+LDNS_NSCOUNT_OFF))
 
#define LDNS_ARCOUNT_OFF   10
 
#define LDNS_ARCOUNT(wirebuf)   (sldns_read_uint16(wirebuf+LDNS_ARCOUNT_OFF))
 

Typedefs

typedef enum sldns_enum_pkt_section sldns_pkt_section
 
typedef enum sldns_enum_pkt_opcode sldns_pkt_opcode
 
typedef enum sldns_enum_pkt_rcode sldns_pkt_rcode
 

Enumerations

enum  sldns_enum_pkt_section {
  LDNS_SECTION_QUESTION = 0, LDNS_SECTION_ANSWER = 1, LDNS_SECTION_AUTHORITY = 2, LDNS_SECTION_ADDITIONAL = 3,
  LDNS_SECTION_ANY = 4, LDNS_SECTION_ANY_NOQUESTION = 5
}
 The sections of a packet. More...
 
enum  sldns_enum_pkt_opcode {
  LDNS_PACKET_QUERY = 0, LDNS_PACKET_IQUERY = 1, LDNS_PACKET_STATUS = 2, LDNS_PACKET_NOTIFY = 4,
  LDNS_PACKET_UPDATE = 5
}
 
enum  sldns_enum_pkt_rcode {
  LDNS_RCODE_NOERROR = 0, LDNS_RCODE_FORMERR = 1, LDNS_RCODE_SERVFAIL = 2, LDNS_RCODE_NXDOMAIN = 3,
  LDNS_RCODE_NOTIMPL = 4, LDNS_RCODE_REFUSED = 5, LDNS_RCODE_YXDOMAIN = 6, LDNS_RCODE_YXRRSET = 7,
  LDNS_RCODE_NXRRSET = 8, LDNS_RCODE_NOTAUTH = 9, LDNS_RCODE_NOTZONE = 10
}
 

Detailed Description

Contains functions that translate dns data from the wire format (as sent by servers and clients) to the internal structures for the packet header.

Enumeration Type Documentation

◆ sldns_enum_pkt_section

The sections of a packet.

Enumerator
LDNS_SECTION_ANY 

bogus section, if not interested

LDNS_SECTION_ANY_NOQUESTION 

used to get all non-question rrs from a packet