frameassembly 1.0.1

A Domain-Specific Language (DSL) for writing deterministic network traffic to .pcap files.
Documentation 
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//! AMQP Layer 7 messaging protocol field parser.

use winnow::ModalResult as PResult;
use winnow::combinator::{alt, cut_err};
use winnow::prelude::*;

use crate::ast::*;
use crate::lexer::Token;
use crate::parser::{parse_str_val, parse_u32, tag, ParsedField, Stream};

/// Parses an AMQP protocol declaration or message broker field.
pub(crate) fn parse_amqp_field<'i, 'a>(input: &mut Stream<'i, 'a>) -> PResult<ParsedField<'a>> {
    alt((
        alt((
            tag(Token::Amqp).map(|(_, s)| ParsedField::Protocol(Protocol::Amqp, (s.start, s.len()))),
            tag(Token::ProtocolHeader).map(|(_, s)| ParsedField::L7Flag("PROTOCOL_HEADER", (s.start, s.len()))),
            tag(Token::ConnectionStart).map(|(_, s)| ParsedField::L7Flag("CONNECTION_START", (s.start, s.len()))),
            tag(Token::ChannelOpen).map(|(_, s)| ParsedField::L7Flag("CHANNEL_OPEN", (s.start, s.len()))),
            tag(Token::BasicPublish).map(|(_, s)| ParsedField::L7Flag("BASIC_PUBLISH", (s.start, s.len()))),
        )),
        alt((
            tag(Token::BasicDeliver).map(|(_, s)| ParsedField::L7Flag("BASIC_DELIVER", (s.start, s.len()))),
            tag(Token::Heartbeat).map(|(_, s)| ParsedField::L7Flag("HEARTBEAT", (s.start, s.len()))),
            (tag(Token::Channel), cut_err(parse_u32)).map(|((_, s), v)| ParsedField::L7U32Field("CHANNEL", v, (s.start, s.end - s.start))),
            (tag(Token::Exchange), cut_err(parse_str_val)).map(|((_, s), v)| ParsedField::L7StringField("EXCHANGE", v, (s.start, s.end - s.start))),
            (tag(Token::RoutingKey), cut_err(parse_str_val)).map(|((_, s), v)| ParsedField::L7StringField("ROUTING_KEY", v, (s.start, s.end - s.start))),
        )),
    ))
    .parse_next(input)
}