Crate packet_dissector_ppp 

PPP (Point-to-Point Protocol) frame dissector and sub-protocol parsers.

Provides a PppDissector for PPP frame dissection (RFC 1661 Section 2) as well as sub-protocol parsers commonly carried inside 3GPP Protocol Configuration Options (PCO) and PPPoE sessions:

• IPCP – Internet Protocol Control Protocol (RFC 1332, RFC 1877)
• LCP – Link Control Protocol (RFC 1661, RFC 2153)
• PAP – Password Authentication Protocol (RFC 1334)
• CHAP – Challenge Handshake Authentication Protocol (RFC 1994)

The sub-protocol parsers accept raw PPP packet bytes (starting with the Code field) and push fields directly into a DissectBuffer.

References

• RFC 1661 (PPP): https://www.rfc-editor.org/rfc/rfc1661
• RFC 2153 (PPP Vendor Extensions, updates RFC 1661): https://www.rfc-editor.org/rfc/rfc2153
• RFC 1332 (IPCP): https://www.rfc-editor.org/rfc/rfc1332
• RFC 1334 (PAP): https://www.rfc-editor.org/rfc/rfc1334
• RFC 1877 (DNS/NBNS extensions for IPCP): https://www.rfc-editor.org/rfc/rfc1877
• RFC 1994 (CHAP, obsoletes RFC 1334 CHAP): https://www.rfc-editor.org/rfc/rfc1994

Modules

chap

CHAP (Challenge Handshake Authentication Protocol) parser.

ipcp

IPCP (Internet Protocol Control Protocol) parser.

lcp

LCP (Link Control Protocol) parser.

pap

PAP (Password Authentication Protocol) parser.

Structs

PppDissector

PPP frame dissector.

Constants

PPP_HEADER_SIZE

Minimum PPP packet header size (Code + Identifier + Length).

Functions

chap_code_name

Returns the human-readable name for a CHAP Code value.

code_name

Returns the human-readable name for a PPP Code value common to LCP, IPCP and other NCPs (codes 1..=7).

lcp_code_name

Returns the human-readable name for an LCP Code value (codes 1..=11).

pap_code_name

Returns the human-readable name for a PAP Code value.

parse_header

Parse the common PPP packet header (Code, Identifier, Length) into a DissectBuffer.

parse_protocol

Dispatch a PPP sub-protocol payload to the appropriate parser.