Crate crdhcpc 

Secure DHCP Client Implementation

This module provides a comprehensive DHCP client supporting:

• DHCPv4 and BOOTP
• DHCPv6
• PXE boot
• Dynamic DNS updates
• Load balancing and failover
• TFTP client for PXE
• Security hardening

Re-exports

pub use protocol::UnixServer;

pub use protocol::ServerConfig;

pub use protocol::DaemonClient;

pub use protocol::UnixClient;

pub use protocol::ClientConfig;

pub use protocol::JsonRpcRequest;

pub use protocol::JsonRpcResponse;

pub use protocol::JsonRpcError;

pub use protocol::ProtocolError;

pub use protocol::ProtocolResult;

pub use control::*;

Modules

control

DHCP Client Control Interface

protocol

Protocol layer for Unix socket communication

Structs

DdnsConfig

Dynamic DNS configuration

DdnsUpdater

Dynamic DNS updater

DhcpClientConfig

Main DHCP client configuration

DhcpClientManager

Unified DHCP client manager

DhcpClientStatus

Overall DHCP client status

DhcpLeaseInfo

Lease information extracted from DHCP ACK

DhcpRawSocket

Raw socket wrapper for DHCP operations

DhcpServer

DHCP server information

Dhcpv4Client

DHCPv4 client

Dhcpv4Config

DHCPv4 configuration

Dhcpv4Lease

DHCPv4 lease

Dhcpv4LeaseInfo

DHCPv4 lease information

Dhcpv4Status

DHCPv4 client status

Dhcpv6AuthConfig

Configuration for DHCPv6 authentication DHCPv6 Authentication Configuration (RFC 8415 Section 20)

Dhcpv6AuthContext

DHCPv6 Authentication Context (RFC 8415 Section 20)

Dhcpv6Client

DHCPv6 client

Dhcpv6Config

DHCPv6 configuration

Dhcpv6IaNa

DHCPv6 Identity Association for Non-temporary Addresses (IA_NA)

Dhcpv6IaNaInfo

DHCPv6 IA_NA information

Dhcpv6IaPd

DHCPv6 Identity Association for Prefix Delegation (IA_PD)

Dhcpv6IaPdInfo

DHCPv6 IA_PD information (Prefix Delegation)

Dhcpv6Status

DHCPv6 client status

Dhcpv6TcpConnection

TCP connection wrapper for DHCPv6 over TCP

Dhcpv6TlsConfig

Configuration for DHCPv6 TLS DHCPv6 TLS/STARTTLS Configuration (RFC 7653)

Dhcpv6TlsContext

DHCPv6 TLS Context for STARTTLS support (RFC 7653)

FailoverConfig

Failover configuration

FailoverManager

Failover manager for DHCP servers

PxeConfig

PXE configuration

PxeConfigSettings

PXE configuration

PxeHandler

PXE client handler

PxeMenuItem

PXE boot menu item

SecurityConfig

Security configuration

SecurityContext

Security context for DHCP client

TftpClient

TFTP client

TftpConfig

TFTP configuration

WifiConfig

WiFi network configuration

WifiInterfaceConfig

WiFi interface configuration (mapping interfaces to networks)

WifiManager

WiFi connection manager

WifiNetwork

WiFi network information from scan

WifiNetworkConfig

WiFi network configuration for a specific interface

Enums

DhcpClientError

DHCP client errors

Dhcpv4State

DHCPv4 client state

Dhcpv6State

DHCPv6 client state

RawSocketType

Raw socket types for DHCP

WifiSecurity

WiFi security/authentication type

Constants

ARP_OP_REPLY

ARP_OP_REQUEST

ARP operation codes

Functions

arp_probe_address

Perform ARP probe to check if an IP address is in use (RFC 5227)

build_arp_probe_frame

Build ARP probe frame for duplicate address detection (RFC 5227)

build_dhcp_decline_ip_packet

Build DHCP DECLINE packet for IP layer socket

build_dhcp_decline_link_frame

Build DHCP DECLINE frame for link layer socket

build_dhcp_discover_ip_packet

Build DHCP DISCOVER packet for IP layer socket

build_dhcp_discover_link_frame

Build DHCP DISCOVER frame for link layer socket

build_dhcp_release_ip_packet

Build DHCP RELEASE packet for IP layer socket

build_dhcp_release_link_frame

Build DHCP RELEASE frame for link layer socket

build_dhcp_request_ip_packet

Build DHCP REQUEST packet for IP layer socket

build_dhcp_request_link_frame

Build DHCP REQUEST frame for link layer socket

create_arp_socket

Create a raw socket for ARP (link layer)

extract_lease_info

Extract full lease information from DHCP ACK message

extract_offered_ip

Extract offered IP address from DHCP message

extract_server_id

Extract server identifier from DHCP options

parse_dhcp_packet

Parse DHCP response packet (Link Layer format with Ethernet header) Returns (message_type, xid, options_data) if valid DHCP packet

sanitize_domain_name

Validate and sanitize a domain name per RFC 1123 Returns sanitized domain name or None if invalid

sanitize_hostname

Validate and sanitize a hostname per RFC 952/1123 Returns sanitized hostname or None if invalid

sanitize_resolv_conf_value

Sanitize a string for safe inclusion in resolv.conf Removes any characters that could be used for injection

validate_interface_name

Validate network interface name to prevent command injection Interface names should only contain alphanumeric chars, hyphens, and underscores

Type Aliases

Result