libtins 4.5
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Represents an UDP PDU. More...
#include <udp.h>
Public Member Functions | |
UDP (uint16_t dport=0, uint16_t sport=0) | |
UDP constructor. | |
UDP (const uint8_t *buffer, uint32_t total_sz) | |
Constructs an UDP object from a buffer. | |
uint16_t | dport () const |
Getter for the destination port. | |
uint16_t | sport () const |
Getter for the source port. | |
uint16_t | length () const |
Getter for the length of the datagram. | |
uint16_t | checksum () const |
Getter for the checksum of the datagram. | |
void | dport (uint16_t new_dport) |
Set the destination port. | |
void | sport (uint16_t new_sport) |
Set the source port. | |
void | length (uint16_t new_len) |
Set the length field. | |
bool | matches_response (const uint8_t *ptr, uint32_t total_sz) const |
Check whether ptr points to a valid response for this PDU. | |
uint32_t | header_size () const |
Returns the header size. | |
PDUType | pdu_type () const |
Getter for the PDU's type. | |
UDP * | clone () const |
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PDU () | |
Default constructor. | |
PDU (PDU &&rhs) TINS_NOEXCEPT | |
Move constructor. | |
PDU & | operator= (PDU &&rhs) TINS_NOEXCEPT |
Move assignment operator. | |
virtual | ~PDU () |
PDU destructor. | |
virtual uint32_t | trailer_size () const |
Trailer's size. | |
uint32_t | size () const |
The whole chain of PDU's size, including this one. | |
virtual uint32_t | advertised_size () const |
The whole chain of PDU's advertised size, including this one. | |
PDU * | inner_pdu () const |
Getter for the inner PDU. | |
PDU * | parent_pdu () const |
PDU * | release_inner_pdu () |
Releases the inner PDU. | |
void | inner_pdu (PDU *next_pdu) |
Sets the child PDU. | |
void | inner_pdu (const PDU &next_pdu) |
Sets the child PDU. | |
serialization_type | serialize () |
Serializes the whole chain of PDU's, including this one. | |
template<typename T > | |
T * | find_pdu (PDUType type=T::pdu_flag) |
Finds and returns the first PDU that matches the given flag. | |
template<typename T > | |
const T * | find_pdu (PDUType type=T::pdu_flag) const |
Finds and returns the first PDU that matches the given flag. | |
template<typename T > | |
T & | rfind_pdu (PDUType type=T::pdu_flag) |
Finds and returns the first PDU that matches the given flag. | |
template<typename T > | |
const T & | rfind_pdu (PDUType type=T::pdu_flag) const |
Finds and returns the first PDU that matches the given flag. | |
virtual void | send (PacketSender &sender, const NetworkInterface &iface) |
Send the stack of PDUs through a PacketSender. | |
virtual PDU * | recv_response (PacketSender &sender, const NetworkInterface &iface) |
Receives a matching response for this packet. | |
virtual bool | matches_flag (PDUType flag) const |
Check whether this PDU matches the specified flag. | |
Static Public Member Functions | |
static metadata | extract_metadata (const uint8_t *buffer, uint32_t total_sz) |
Extracts metadata for this protocol based on the buffer provided. | |
Static Public Attributes | |
static const PDU::PDUType | pdu_flag = PDU::UDP |
This PDU's flag. | |
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static const endian_type | endianness = BE |
Additional Inherited Members | |
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enum | endian_type { BE , LE } |
enum | PDUType { RAW , ETHERNET_II , IEEE802_3 , DOT3 = IEEE802_3 , RADIOTAP , DOT11 , DOT11_ACK , DOT11_ASSOC_REQ , DOT11_ASSOC_RESP , DOT11_AUTH , DOT11_BEACON , DOT11_BLOCK_ACK , DOT11_BLOCK_ACK_REQ , DOT11_CF_END , DOT11_DATA , DOT11_CONTROL , DOT11_DEAUTH , DOT11_DIASSOC , DOT11_END_CF_ACK , DOT11_MANAGEMENT , DOT11_PROBE_REQ , DOT11_PROBE_RESP , DOT11_PS_POLL , DOT11_REASSOC_REQ , DOT11_REASSOC_RESP , DOT11_RTS , DOT11_QOS_DATA , LLC , SNAP , IP , ARP , TCP , UDP , ICMP , BOOTP , DHCP , EAPOL , RC4EAPOL , RSNEAPOL , DNS , LOOPBACK , IPv6 , ICMPv6 , SLL , DHCPv6 , DOT1AD , DOT1Q , PPPOE , STP , PPI , IPSEC_AH , IPSEC_ESP , PKTAP , MPLS , DOT11_CONTROL_TA , VXLAN , UNKNOWN = 999 , USER_DEFINED_PDU = 1000 } |
Enum which identifies each type of PDU. More... | |
typedef byte_array | serialization_type |
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PDU (const PDU &other) | |
Copy constructor. | |
PDU & | operator= (const PDU &other) |
Copy assignment operator. | |
void | copy_inner_pdu (const PDU &pdu) |
Copy other PDU's inner PDU(if any). | |
virtual void | prepare_for_serialize () |
Prepares this PDU for serialization. | |
void | serialize (uint8_t *buffer, uint32_t total_sz) |
Serializes this PDU and propagates this action to child PDUs. | |
Represents an UDP PDU.
This class represents an UDP PDU.
While sniffing, the payload sent in each packet will be wrapped in a RawPDU, which is set as the UDP object's inner_pdu. Therefore, if you are sniffing and want to see the UDP packet's payload, you need to do the following:
Tins::UDP::UDP | ( | uint16_t | dport = 0, |
uint16_t | sport = 0 ) |
Tins::UDP::UDP | ( | const uint8_t * | buffer, |
uint32_t | total_sz ) |
Constructs an UDP object from a buffer.
If there is not enough size for a UDP header a malformed_packet exception is thrown.
Any extra data will be stored in a RawPDU.
buffer | The buffer from which this PDU will be constructed. |
total_sz | The total size of the buffer. |
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inline |
Getter for the checksum of the datagram.
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inlinevirtual |
Implements Tins::PDU.
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inline |
Getter for the destination port.
void Tins::UDP::dport | ( | uint16_t | new_dport | ) |
Set the destination port.
new_dport | The new destination port. |
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static |
Extracts metadata for this protocol based on the buffer provided.
buffer | Pointer to a buffer |
total_sz | Size of the buffer pointed by buffer |
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virtual |
Returns the header size.
This method overrides PDU::header_size. This size includes the payload and options size.
Implements Tins::PDU.
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inline |
Getter for the length of the datagram.
void Tins::UDP::length | ( | uint16_t | new_len | ) |
Set the length field.
new_len | The new length field. |
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virtual |
Check whether ptr points to a valid response for this PDU.
This compares the source and destination ports in the provided response with those stored in this PDU.
ptr | The pointer to the buffer. |
total_sz | The size of the buffer. |
Reimplemented from Tins::PDU.
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inlinevirtual |
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inline |
Getter for the source port.
void Tins::UDP::sport | ( | uint16_t | new_sport | ) |
Set the source port.
new_sport | The new source port. |