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feat(pcap): add rayhunter name and version to metadata

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Add the compile-time name and version to the pcap's Section Header Block
as the shb_userappl option, the canonical place for storing the name of
the application used to create the pcap.[0]

[0] https://ietf-opsawg-wg.github.io/draft-ietf-opsawg-pcap/draft-ietf-opsawg-pcapng.html#section-4.1-10
This commit is contained in:
oopsbagel
2025-03-16 01:13:03 -07:00
committed by Will Greenberg
parent c765a40426
commit 5ae186bc73
1 changed files with 13 additions and 2 deletions
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15
lib/src/pcap.rs
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@@ -9,8 +9,9 @@ use chrono::prelude::*;
use deku::prelude::*;
use pcap_file_tokio::pcapng::blocks::enhanced_packet::EnhancedPacketBlock;
use pcap_file_tokio::pcapng::blocks::interface_description::InterfaceDescriptionBlock;
use pcap_file_tokio::pcapng::blocks::section_header::{SectionHeaderBlock, SectionHeaderOption};
use pcap_file_tokio::pcapng::PcapNgWriter;
use pcap_file_tokio::PcapError;
use pcap_file_tokio::{Endianness, PcapError};
use thiserror::Error;
#[derive(Error, Debug)]
@@ -60,7 +61,17 @@ struct UdpHeader {
impl<T> GsmtapPcapWriter<T> where T: AsyncWrite + Unpin + Send {
pub async fn new(writer: T) -> Result<Self, GsmtapPcapError> {
let writer = PcapNgWriter::new(writer).await?;
let package = concat!(env!("CARGO_PKG_NAME"), " ", env!("CARGO_PKG_VERSION"));
let application = SectionHeaderOption::UserApplication(Cow::from(package));
let section = SectionHeaderBlock {
endianness: Endianness::Big,
major_version: 1,
minor_version: 0,
section_length: -1,
options: vec![application],
};
let writer = PcapNgWriter::with_section_header(writer, section).await?;
Ok(GsmtapPcapWriter { writer, ip_id: 0 })
}