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Kea 3.0.0
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Represents a sub-option inserted by the DHCPv4 relay. More...
#include <token.h>
Public Member Functions | |
| TokenRelay4Option (const uint16_t option_code, const RepresentationType &rep_type) | |
| Constructor for extracting sub-option from RAI (option 82) | |
| Public Member Functions inherited from isc::dhcp::TokenOption | |
| TokenOption (const uint16_t option_code, const RepresentationType &rep_type) | |
| Constructor that takes an option code as a parameter. | |
| virtual unsigned | evaluate (Pkt &pkt, ValueStack &values) |
| Evaluates the values of the option. | |
| uint16_t | getCode () const |
| Returns option-code. | |
| RepresentationType | getRepresentation () const |
| Returns representation-type. | |
| Public Member Functions inherited from isc::dhcp::Token | |
| virtual | ~Token () |
| Virtual destructor. | |
| virtual unsigned | getLabel () const |
| Return the label of this token. | |
Protected Member Functions | |
| virtual OptionPtr | getOption (Pkt &pkt) |
| Attempts to obtain specified sub-option of option 82 from the packet. | |
| Protected Member Functions inherited from isc::dhcp::TokenOption | |
| virtual std::string | pushFailure (ValueStack &values) |
| Auxiliary method that puts string representing a failure. | |
Additional Inherited Members | |
| Public Types inherited from isc::dhcp::TokenOption | |
| enum | RepresentationType { TEXTUAL , HEXADECIMAL , EXISTS } |
| Token representation type. More... | |
| Static Public Member Functions inherited from isc::dhcp::Token | |
| static bool | toBool (std::string value) |
| Coverts a (string) value to a boolean. | |
| Protected Attributes inherited from isc::dhcp::TokenOption | |
| uint16_t | option_code_ |
| Code of the option to be extracted. | |
| RepresentationType | representation_type_ |
| Representation type. | |
Represents a sub-option inserted by the DHCPv4 relay.
DHCPv4 relays insert sub-options in option 82. This token attempts to extract such sub-options. Note in DHCPv6 it is radically different (possibly many encapsulation levels), thus there are separate classes for v4 and v6.
This token can represent the following expressions: relay[13].text - Textual representation of sub-option 13 in RAI (option 82) relay[13].hex - Binary representation of sub-option 13 in RAI (option 82) relay[vendor-class].text - Text representation of sub-option X in RAI (option 82) relay[vendor-class].hex - Binary representation of sub-option X in RAI (option 82)
| TokenRelay4Option::TokenRelay4Option | ( | const uint16_t | option_code, |
| const RepresentationType & | rep_type ) |
Constructor for extracting sub-option from RAI (option 82)
| option_code | code of the requested sub-option |
| rep_type | code representation (currently .hex and .text are supported) |
Definition at line 453 of file token.cc.
References isc::dhcp::TokenOption::TokenOption().
Attempts to obtain specified sub-option of option 82 from the packet.
| pkt | DHCPv4 packet (that hopefully contains option 82) |
Reimplemented from isc::dhcp::TokenOption.
Definition at line 459 of file token.cc.
References isc::dhcp::DHO_DHCP_AGENT_OPTIONS, isc::dhcp::Pkt::getOption(), and isc::dhcp::TokenOption::option_code_.