Add WASM parser and Vue dissector UI.
Ship a working HexPigeon: typed binary parsing in Rust/WASM, a three-pane frontend, and unit tests covering the field types. Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Cursor
Generated
+263
@@ -0,0 +1,263 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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"futures-core",
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"futures-task",
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"pin-project-lite",
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"slab",
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]
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[[package]]
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name = "hex-pigeon-parser"
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version = "0.1.0"
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dependencies = [
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"crc",
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"serde",
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"serde-wasm-bindgen",
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"serde_json",
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"wasm-bindgen",
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]
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[[package]]
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dependencies = [
|
||||
"cfg-if",
|
||||
"futures-util",
|
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"wasm-bindgen",
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]
|
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|
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dependencies = [
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"unicode-ident",
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]
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"serde_core",
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"serde_derive",
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"wasm-bindgen",
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"serde_derive",
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]
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"proc-macro2",
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"quote",
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"syn 3.0.4",
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||||
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dependencies = [
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"itoa",
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"memchr",
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"serde",
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"serde_core",
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"zmij",
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]
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dependencies = [
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"proc-macro2",
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"quote",
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"unicode-ident",
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]
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[[package]]
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name = "syn"
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dependencies = [
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"proc-macro2",
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"quote",
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"unicode-ident",
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]
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[[package]]
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name = "wasm-bindgen"
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dependencies = [
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"cfg-if",
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||||
"once_cell",
|
||||
"rustversion",
|
||||
"wasm-bindgen-macro",
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||||
"wasm-bindgen-shared",
|
||||
]
|
||||
|
||||
[[package]]
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||||
name = "wasm-bindgen-macro"
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dependencies = [
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"quote",
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"wasm-bindgen-macro-support",
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]
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|
||||
[[package]]
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name = "wasm-bindgen-macro-support"
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dependencies = [
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||||
"bumpalo",
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||||
"proc-macro2",
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||||
"quote",
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"syn 2.0.119",
|
||||
"wasm-bindgen-shared",
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||||
]
|
||||
|
||||
[[package]]
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||||
name = "wasm-bindgen-shared"
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version = "0.2.127"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7ef64dbcc55df09c7e5a46182d181c2cfa3e925f3da937ea764728b4bbb9dcbf"
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dependencies = [
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"unicode-ident",
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]
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||||
[[package]]
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||||
name = "zmij"
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version = "1.0.23"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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|
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@@ -0,0 +1,18 @@
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[package]
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||||
name = "hex-pigeon-parser"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
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||||
|
||||
[lib]
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crate-type = ["cdylib", "rlib"]
|
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[dependencies]
|
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wasm-bindgen = "0.2"
|
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serde = { version = "1.0", features = ["derive"] }
|
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serde-wasm-bindgen = "0.6"
|
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serde_json = "1.0"
|
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crc = "3.2"
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[profile.release]
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opt-level = "s"
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lto = true
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@@ -0,0 +1,37 @@
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use crc::{Crc, CRC_16_IBM_SDLC, CRC_32_ISO_HDLC};
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pub fn compute_crc16(data: &[u8]) -> u16 {
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let crc = Crc::<u16>::new(&CRC_16_IBM_SDLC);
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crc.checksum(data)
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}
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pub fn compute_crc32(data: &[u8]) -> u32 {
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let crc = Crc::<u32>::new(&CRC_32_ISO_HDLC);
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crc.checksum(data)
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn crc16_is_deterministic() {
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let a = compute_crc16(b"123456789");
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let b = compute_crc16(b"123456789");
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assert_eq!(a, b);
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assert_ne!(a, compute_crc16(b"123456788"));
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}
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#[test]
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fn crc32_is_deterministic() {
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let a = compute_crc32(b"123456789");
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let b = compute_crc32(b"123456789");
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assert_eq!(a, b);
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assert_ne!(a, compute_crc32(b"123456788"));
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}
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#[test]
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fn empty_input_has_known_crc32() {
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assert_eq!(compute_crc32(&[]), 0x0000_0000);
|
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}
|
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}
|
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@@ -0,0 +1,67 @@
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use wasm_bindgen::prelude::*;
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mod parser;
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mod schema;
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pub mod checksum;
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pub use parser::*;
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pub use schema::*;
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/// Entry point: parse `hex_input` against `schema_json`.
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/// Returns a JSON string of `ParseResult`.
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#[wasm_bindgen]
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pub fn parse(hex_input: &str, schema_json: &str) -> Result<JsValue, JsValue> {
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let schema: schema::Schema = serde_json::from_str(schema_json)
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.map_err(|e| JsValue::from_str(&format!("Schema error: {e}")))?;
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let bytes = hex_to_bytes(hex_input)
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.map_err(|e| JsValue::from_str(&e))?;
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let result = parser::parse_fields(&bytes, &schema.fields)
|
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.map_err(|e| JsValue::from_str(&e))?;
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serde_wasm_bindgen::to_value(&result).map_err(|e| JsValue::from_str(&e.to_string()))
|
||||
}
|
||||
|
||||
/// Convert hex string (with optional spaces/newlines) to bytes.
|
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#[wasm_bindgen]
|
||||
pub fn hex_to_bytes_js(hex: &str) -> Result<Vec<u8>, JsValue> {
|
||||
hex_to_bytes(hex).map_err(|e| JsValue::from_str(&e))
|
||||
}
|
||||
|
||||
pub fn hex_to_bytes(hex: &str) -> Result<Vec<u8>, String> {
|
||||
let clean: String = hex.chars().filter(|c| !c.is_whitespace()).collect();
|
||||
if clean.len() % 2 != 0 {
|
||||
return Err(format!("Hex string has odd length: {}", clean.len()));
|
||||
}
|
||||
(0..clean.len())
|
||||
.step_by(2)
|
||||
.map(|i| {
|
||||
u8::from_str_radix(&clean[i..i + 2], 16)
|
||||
.map_err(|_| format!("Invalid hex byte at position {i}: '{}'", &clean[i..i + 2]))
|
||||
})
|
||||
.collect()
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::hex_to_bytes;
|
||||
|
||||
#[test]
|
||||
fn hex_to_bytes_accepts_whitespace() {
|
||||
let bytes = hex_to_bytes("FF 05\n48 65").expect("parse hex");
|
||||
assert_eq!(bytes, vec![0xFF, 0x05, 0x48, 0x65]);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn hex_to_bytes_rejects_odd_length() {
|
||||
let err = hex_to_bytes("ABC").unwrap_err();
|
||||
assert!(err.contains("odd length"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn hex_to_bytes_rejects_invalid_digits() {
|
||||
let err = hex_to_bytes("GG").unwrap_err();
|
||||
assert!(err.contains("Invalid hex byte"));
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,309 @@
|
||||
use std::collections::HashMap;
|
||||
use serde::{Deserialize, Serialize};
|
||||
use crate::schema::{CountSpec, Endian, FieldDef, FieldKind};
|
||||
use crate::checksum::{compute_crc16, compute_crc32};
|
||||
|
||||
/// The result of parsing a full frame.
|
||||
#[derive(Debug, Serialize, Deserialize)]
|
||||
pub struct ParseResult {
|
||||
pub fields: Vec<ParsedField>,
|
||||
pub total_bytes: usize,
|
||||
pub consumed_bytes: usize,
|
||||
}
|
||||
|
||||
/// A parsed field with its byte span for highlighting.
|
||||
#[derive(Debug, Serialize, Deserialize, Clone)]
|
||||
pub struct ParsedField {
|
||||
pub name: String,
|
||||
pub kind: String,
|
||||
/// Byte offset where this field starts.
|
||||
pub offset: usize,
|
||||
/// Number of bytes consumed.
|
||||
pub size: usize,
|
||||
/// Human-readable value.
|
||||
pub value: ParsedValue,
|
||||
pub description: Option<String>,
|
||||
/// For repeated/compound fields.
|
||||
pub children: Option<Vec<ParsedField>>,
|
||||
/// For checksum fields: whether it matches the computed value.
|
||||
pub checksum_valid: Option<bool>,
|
||||
}
|
||||
|
||||
#[derive(Debug, Serialize, Deserialize, Clone)]
|
||||
#[serde(untagged)]
|
||||
pub enum ParsedValue {
|
||||
Uint(u64),
|
||||
Int(i64),
|
||||
Float(f64),
|
||||
Bytes(Vec<u8>),
|
||||
Str(String),
|
||||
Flags(Vec<FlagValue>),
|
||||
None,
|
||||
}
|
||||
|
||||
#[derive(Debug, Serialize, Deserialize, Clone)]
|
||||
pub struct FlagValue {
|
||||
pub bit: u8,
|
||||
pub name: String,
|
||||
pub set: bool,
|
||||
}
|
||||
|
||||
struct Cursor<'a> {
|
||||
data: &'a [u8],
|
||||
pos: usize,
|
||||
}
|
||||
|
||||
impl<'a> Cursor<'a> {
|
||||
fn new(data: &'a [u8]) -> Self {
|
||||
Self { data, pos: 0 }
|
||||
}
|
||||
|
||||
fn remaining(&self) -> usize {
|
||||
self.data.len().saturating_sub(self.pos)
|
||||
}
|
||||
|
||||
fn read_bytes(&mut self, n: usize) -> Result<&[u8], String> {
|
||||
if self.pos + n > self.data.len() {
|
||||
return Err(format!(
|
||||
"Not enough bytes at offset {}: need {n}, have {}",
|
||||
self.pos,
|
||||
self.remaining()
|
||||
));
|
||||
}
|
||||
let start = self.pos;
|
||||
self.pos += n;
|
||||
Ok(&self.data[start..start + n])
|
||||
}
|
||||
|
||||
fn read_u8(&mut self) -> Result<u8, String> {
|
||||
Ok(self.read_bytes(1)?[0])
|
||||
}
|
||||
|
||||
fn read_u16(&mut self, endian: &Endian) -> Result<u16, String> {
|
||||
let b = self.read_bytes(2)?;
|
||||
Ok(match endian {
|
||||
Endian::Big => u16::from_be_bytes([b[0], b[1]]),
|
||||
Endian::Little => u16::from_le_bytes([b[0], b[1]]),
|
||||
})
|
||||
}
|
||||
|
||||
fn read_u32(&mut self, endian: &Endian) -> Result<u32, String> {
|
||||
let b = self.read_bytes(4)?;
|
||||
Ok(match endian {
|
||||
Endian::Big => u32::from_be_bytes([b[0], b[1], b[2], b[3]]),
|
||||
Endian::Little => u32::from_le_bytes([b[0], b[1], b[2], b[3]]),
|
||||
})
|
||||
}
|
||||
|
||||
fn read_u64(&mut self, endian: &Endian) -> Result<u64, String> {
|
||||
let b = self.read_bytes(8)?;
|
||||
let arr: [u8; 8] = b.try_into().unwrap();
|
||||
Ok(match endian {
|
||||
Endian::Big => u64::from_be_bytes(arr),
|
||||
Endian::Little => u64::from_le_bytes(arr),
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
pub fn parse_fields(data: &[u8], fields: &[FieldDef]) -> Result<ParseResult, String> {
|
||||
let mut cursor = Cursor::new(data);
|
||||
let mut parsed = Vec::new();
|
||||
// Track named uint fields for dynamic count resolution.
|
||||
let mut named_uints: HashMap<String, usize> = HashMap::new();
|
||||
|
||||
parse_fields_inner(data, &mut cursor, fields, &mut parsed, &mut named_uints)?;
|
||||
|
||||
Ok(ParseResult {
|
||||
fields: parsed,
|
||||
total_bytes: data.len(),
|
||||
consumed_bytes: cursor.pos,
|
||||
})
|
||||
}
|
||||
|
||||
fn parse_fields_inner(
|
||||
full_data: &[u8],
|
||||
cursor: &mut Cursor,
|
||||
fields: &[FieldDef],
|
||||
out: &mut Vec<ParsedField>,
|
||||
named_uints: &mut HashMap<String, usize>,
|
||||
) -> Result<(), String> {
|
||||
// Default endian if not specified in field.
|
||||
let global_endian = Endian::Big;
|
||||
|
||||
for field in fields {
|
||||
let endian = field.endian.as_ref().unwrap_or(&global_endian);
|
||||
let offset = cursor.pos;
|
||||
|
||||
let (value, size, children, checksum_valid) = match &field.kind {
|
||||
FieldKind::Uint8 => {
|
||||
let v = cursor.read_u8()? as u64;
|
||||
named_uints.insert(field.name.clone(), v as usize);
|
||||
(ParsedValue::Uint(v), 1, None, None)
|
||||
}
|
||||
FieldKind::Uint16 => {
|
||||
let v = cursor.read_u16(endian)? as u64;
|
||||
named_uints.insert(field.name.clone(), v as usize);
|
||||
(ParsedValue::Uint(v), 2, None, None)
|
||||
}
|
||||
FieldKind::Uint32 => {
|
||||
let v = cursor.read_u32(endian)? as u64;
|
||||
named_uints.insert(field.name.clone(), v as usize);
|
||||
(ParsedValue::Uint(v), 4, None, None)
|
||||
}
|
||||
FieldKind::Uint64 => {
|
||||
let v = cursor.read_u64(endian)?;
|
||||
(ParsedValue::Uint(v), 8, None, None)
|
||||
}
|
||||
FieldKind::Int8 => {
|
||||
let v = cursor.read_u8()? as i8;
|
||||
(ParsedValue::Int(v as i64), 1, None, None)
|
||||
}
|
||||
FieldKind::Int16 => {
|
||||
let raw = cursor.read_u16(endian)?;
|
||||
let v = raw as i16;
|
||||
(ParsedValue::Int(v as i64), 2, None, None)
|
||||
}
|
||||
FieldKind::Int32 => {
|
||||
let raw = cursor.read_u32(endian)?;
|
||||
let v = raw as i32;
|
||||
(ParsedValue::Int(v as i64), 4, None, None)
|
||||
}
|
||||
FieldKind::Float32 => {
|
||||
let raw = cursor.read_u32(endian)?;
|
||||
let v = f32::from_bits(raw) as f64;
|
||||
(ParsedValue::Float(v), 4, None, None)
|
||||
}
|
||||
FieldKind::Float64 => {
|
||||
let raw = cursor.read_u64(endian)?;
|
||||
let v = f64::from_bits(raw);
|
||||
(ParsedValue::Float(v), 8, None, None)
|
||||
}
|
||||
FieldKind::Bitflags8 => {
|
||||
let byte = cursor.read_u8()?;
|
||||
let flags = resolve_flags(byte as u64, field.flags.as_deref().unwrap_or(&[]));
|
||||
(ParsedValue::Flags(flags), 1, None, None)
|
||||
}
|
||||
FieldKind::Bitflags16 => {
|
||||
let raw = cursor.read_u16(endian)? as u64;
|
||||
let flags = resolve_flags(raw, field.flags.as_deref().unwrap_or(&[]));
|
||||
(ParsedValue::Flags(flags), 2, None, None)
|
||||
}
|
||||
FieldKind::Bytes => {
|
||||
let len = field.length.ok_or_else(|| {
|
||||
format!("Field '{}': 'bytes' type requires 'length'", field.name)
|
||||
})?;
|
||||
let b = cursor.read_bytes(len)?.to_vec();
|
||||
(ParsedValue::Bytes(b), len, None, None)
|
||||
}
|
||||
FieldKind::Padding => {
|
||||
let len = field.length.unwrap_or(1);
|
||||
cursor.read_bytes(len)?;
|
||||
(ParsedValue::None, len, None, None)
|
||||
}
|
||||
FieldKind::StringFixed => {
|
||||
let len = field.length.ok_or_else(|| {
|
||||
format!("Field '{}': 'string_fixed' requires 'length'", field.name)
|
||||
})?;
|
||||
let raw = cursor.read_bytes(len)?.to_vec();
|
||||
let s = String::from_utf8_lossy(&raw)
|
||||
.trim_end_matches('\0')
|
||||
.to_string();
|
||||
(ParsedValue::Str(s), len, None, None)
|
||||
}
|
||||
FieldKind::StringLp8 => {
|
||||
let len = cursor.read_u8()? as usize;
|
||||
let raw = cursor.read_bytes(len)?.to_vec();
|
||||
let s = String::from_utf8_lossy(&raw).into_owned();
|
||||
(ParsedValue::Str(s), 1 + len, None, None)
|
||||
}
|
||||
FieldKind::StringLp16 => {
|
||||
let len = cursor.read_u16(endian)? as usize;
|
||||
let raw = cursor.read_bytes(len)?.to_vec();
|
||||
let s = String::from_utf8_lossy(&raw).into_owned();
|
||||
(ParsedValue::Str(s), 2 + len, None, None)
|
||||
}
|
||||
FieldKind::Crc16 => {
|
||||
let stored = cursor.read_u16(endian)?;
|
||||
let valid = if let Some(range) = field.checksum_range {
|
||||
let slice = full_data
|
||||
.get(range[0]..range[1])
|
||||
.ok_or_else(|| format!("CRC range {:?} out of bounds", range))?;
|
||||
let computed = compute_crc16(slice);
|
||||
Some(computed == stored)
|
||||
} else {
|
||||
None
|
||||
};
|
||||
(ParsedValue::Uint(stored as u64), 2, None, valid)
|
||||
}
|
||||
FieldKind::Crc32 => {
|
||||
let stored = cursor.read_u32(endian)?;
|
||||
let valid = if let Some(range) = field.checksum_range {
|
||||
let slice = full_data
|
||||
.get(range[0]..range[1])
|
||||
.ok_or_else(|| format!("CRC range {:?} out of bounds", range))?;
|
||||
let computed = compute_crc32(slice);
|
||||
Some(computed == stored)
|
||||
} else {
|
||||
None
|
||||
};
|
||||
(ParsedValue::Uint(stored as u64), 4, None, valid)
|
||||
}
|
||||
FieldKind::Repeated => {
|
||||
let inner_fields = field.fields.as_deref().ok_or_else(|| {
|
||||
format!("Field '{}': 'repeated' requires 'fields'", field.name)
|
||||
})?;
|
||||
let count = match field.count.as_ref() {
|
||||
Some(CountSpec::Fixed(n)) => *n,
|
||||
Some(CountSpec::Field(name)) => *named_uints
|
||||
.get(name)
|
||||
.ok_or_else(|| format!("Count field '{}' not found", name))?,
|
||||
None => {
|
||||
return Err(format!(
|
||||
"Field '{}': 'repeated' requires 'count'",
|
||||
field.name
|
||||
))
|
||||
}
|
||||
};
|
||||
|
||||
let start = cursor.pos;
|
||||
let mut children_out = Vec::new();
|
||||
let mut child_named = named_uints.clone();
|
||||
for _ in 0..count {
|
||||
let mut iteration = Vec::new();
|
||||
parse_fields_inner(
|
||||
full_data,
|
||||
cursor,
|
||||
inner_fields,
|
||||
&mut iteration,
|
||||
&mut child_named,
|
||||
)?;
|
||||
children_out.extend(iteration);
|
||||
}
|
||||
let size = cursor.pos - start;
|
||||
(ParsedValue::None, size, Some(children_out), None)
|
||||
}
|
||||
};
|
||||
|
||||
out.push(ParsedField {
|
||||
name: field.name.clone(),
|
||||
kind: format!("{:?}", field.kind),
|
||||
offset,
|
||||
size,
|
||||
value,
|
||||
description: field.description.clone(),
|
||||
children,
|
||||
checksum_valid,
|
||||
});
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn resolve_flags(raw: u64, defs: &[crate::schema::FlagDef]) -> Vec<FlagValue> {
|
||||
defs.iter()
|
||||
.map(|f| FlagValue {
|
||||
bit: f.bit,
|
||||
name: f.name.clone(),
|
||||
set: (raw >> f.bit) & 1 == 1,
|
||||
})
|
||||
.collect()
|
||||
}
|
||||
@@ -0,0 +1,110 @@
|
||||
use serde::{Deserialize, Serialize};
|
||||
|
||||
/// A full schema describing a binary frame layout.
|
||||
#[derive(Debug, Clone, Serialize, Deserialize)]
|
||||
pub struct Schema {
|
||||
/// Human-readable name for this schema.
|
||||
pub name: Option<String>,
|
||||
/// Endianness applied globally unless overridden per field.
|
||||
#[serde(default = "default_endian")]
|
||||
pub endian: Endian,
|
||||
/// Ordered list of fields to parse.
|
||||
pub fields: Vec<FieldDef>,
|
||||
}
|
||||
|
||||
fn default_endian() -> Endian {
|
||||
Endian::Big
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
|
||||
#[serde(rename_all = "lowercase")]
|
||||
pub enum Endian {
|
||||
Big,
|
||||
Little,
|
||||
}
|
||||
|
||||
/// A single field definition.
|
||||
#[derive(Debug, Clone, Serialize, Deserialize)]
|
||||
pub struct FieldDef {
|
||||
/// Display name.
|
||||
pub name: String,
|
||||
/// Field type.
|
||||
#[serde(rename = "type")]
|
||||
pub kind: FieldKind,
|
||||
/// Override global endianness for this field.
|
||||
pub endian: Option<Endian>,
|
||||
/// Description / comment shown in the tree.
|
||||
pub description: Option<String>,
|
||||
/// For bitflags: the flag definitions.
|
||||
pub flags: Option<Vec<FlagDef>>,
|
||||
/// For `bytes` type: number of bytes (required).
|
||||
/// For `string_lp8` / `string_lp16`: omit (length is read from data).
|
||||
/// For other types: derived from type width.
|
||||
pub length: Option<usize>,
|
||||
/// For `crc16` / `crc32`: byte range to checksum [start, end) relative to frame start.
|
||||
pub checksum_range: Option<[usize; 2]>,
|
||||
/// For `repeated`: how many repetitions (constant or from a previously parsed field name).
|
||||
pub count: Option<CountSpec>,
|
||||
/// For `repeated`: the inner fields to repeat.
|
||||
pub fields: Option<Vec<FieldDef>>,
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
|
||||
#[serde(rename_all = "snake_case")]
|
||||
pub enum FieldKind {
|
||||
/// 1 byte unsigned.
|
||||
Uint8,
|
||||
/// 2 bytes unsigned.
|
||||
Uint16,
|
||||
/// 4 bytes unsigned.
|
||||
Uint32,
|
||||
/// 8 bytes unsigned.
|
||||
Uint64,
|
||||
/// 1 byte signed.
|
||||
Int8,
|
||||
/// 2 bytes signed.
|
||||
Int16,
|
||||
/// 4 bytes signed.
|
||||
Int32,
|
||||
/// 4 bytes float.
|
||||
Float32,
|
||||
/// 8 bytes float.
|
||||
Float64,
|
||||
/// 1-byte bitfield with named flags.
|
||||
Bitflags8,
|
||||
/// 2-byte bitfield with named flags.
|
||||
Bitflags16,
|
||||
/// Raw bytes of `length`.
|
||||
Bytes,
|
||||
/// Null-terminated string of `length` bytes.
|
||||
StringFixed,
|
||||
/// Pascal-style: 1-byte length prefix, then UTF-8 bytes.
|
||||
StringLp8,
|
||||
/// Pascal-style: 2-byte length prefix (respects endian), then UTF-8 bytes.
|
||||
StringLp16,
|
||||
/// CRC-16/CCITT checksum (2 bytes).
|
||||
Crc16,
|
||||
/// CRC-32 checksum (4 bytes).
|
||||
Crc32,
|
||||
/// Repeat inner `fields` `count` times.
|
||||
Repeated,
|
||||
/// Skip / padding bytes.
|
||||
Padding,
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, Serialize, Deserialize)]
|
||||
pub struct FlagDef {
|
||||
/// Bit index (0 = LSB).
|
||||
pub bit: u8,
|
||||
pub name: String,
|
||||
pub description: Option<String>,
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, Serialize, Deserialize)]
|
||||
#[serde(untagged)]
|
||||
pub enum CountSpec {
|
||||
/// Literal count.
|
||||
Fixed(usize),
|
||||
/// Name of a previously parsed uint field holding the count.
|
||||
Field(String),
|
||||
}
|
||||
@@ -0,0 +1,297 @@
|
||||
use hex_pigeon_parser::checksum::{compute_crc16, compute_crc32};
|
||||
use hex_pigeon_parser::{
|
||||
parse_fields, CountSpec, Endian, FieldDef, FieldKind, FlagDef, ParsedValue, Schema,
|
||||
};
|
||||
|
||||
fn field(name: &str, kind: FieldKind) -> FieldDef {
|
||||
FieldDef {
|
||||
name: name.to_string(),
|
||||
kind,
|
||||
endian: None,
|
||||
description: None,
|
||||
flags: None,
|
||||
length: None,
|
||||
checksum_range: None,
|
||||
count: None,
|
||||
fields: None,
|
||||
}
|
||||
}
|
||||
|
||||
fn field_len(name: &str, kind: FieldKind, length: usize) -> FieldDef {
|
||||
let mut f = field(name, kind);
|
||||
f.length = Some(length);
|
||||
f
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn schema_deserializes_from_json() {
|
||||
let json = r#"{
|
||||
"name": "Test",
|
||||
"endian": "little",
|
||||
"fields": [{ "name": "id", "type": "uint8" }]
|
||||
}"#;
|
||||
let schema: Schema = serde_json::from_str(json).expect("schema JSON");
|
||||
assert_eq!(schema.name.as_deref(), Some("Test"));
|
||||
assert_eq!(schema.endian, Endian::Little);
|
||||
assert_eq!(schema.fields.len(), 1);
|
||||
assert_eq!(schema.fields[0].kind, FieldKind::Uint8);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parses_integer_types_big_endian() {
|
||||
let data = [
|
||||
0x12,
|
||||
0x12, 0x34,
|
||||
0x12, 0x34, 0x56, 0x78,
|
||||
0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0,
|
||||
0xFE,
|
||||
0xFF, 0xF0,
|
||||
0x80, 0x00, 0x00, 0x01,
|
||||
];
|
||||
let fields = vec![
|
||||
field("u8", FieldKind::Uint8),
|
||||
field("u16", FieldKind::Uint16),
|
||||
field("u32", FieldKind::Uint32),
|
||||
field("u64", FieldKind::Uint64),
|
||||
field("i8", FieldKind::Int8),
|
||||
field("i16", FieldKind::Int16),
|
||||
field("i32", FieldKind::Int32),
|
||||
];
|
||||
let result = parse_fields(&data, &fields).expect("parse");
|
||||
|
||||
assert_eq!(result.consumed_bytes, 22);
|
||||
assert!(matches!(result.fields[0].value, ParsedValue::Uint(0x12)));
|
||||
assert!(matches!(result.fields[1].value, ParsedValue::Uint(0x1234)));
|
||||
assert!(matches!(result.fields[2].value, ParsedValue::Uint(0x12345678)));
|
||||
assert!(matches!(result.fields[3].value, ParsedValue::Uint(0x123456789ABCDEF0)));
|
||||
assert!(matches!(result.fields[4].value, ParsedValue::Int(-2)));
|
||||
assert!(matches!(result.fields[5].value, ParsedValue::Int(-16)));
|
||||
assert!(matches!(result.fields[6].value, ParsedValue::Int(-2147483647)));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parses_integer_types_little_endian() {
|
||||
let data = [0x34, 0x12];
|
||||
let mut f = field("u16", FieldKind::Uint16);
|
||||
f.endian = Some(Endian::Little);
|
||||
let result = parse_fields(&data, &[f]).expect("parse");
|
||||
assert!(matches!(result.fields[0].value, ParsedValue::Uint(0x1234)));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parses_float_types() {
|
||||
let f32_bits = 1.0f32.to_bits();
|
||||
let f64_bits = 2.5f64.to_bits();
|
||||
let mut data = Vec::new();
|
||||
data.extend_from_slice(&f32_bits.to_be_bytes());
|
||||
data.extend_from_slice(&f64_bits.to_be_bytes());
|
||||
|
||||
let fields = vec![field("f32", FieldKind::Float32), field("f64", FieldKind::Float64)];
|
||||
let result = parse_fields(&data, &fields).expect("parse");
|
||||
|
||||
match &result.fields[0].value {
|
||||
ParsedValue::Float(v) => assert!((v - 1.0).abs() < f64::EPSILON),
|
||||
other => panic!("expected float32, got {other:?}"),
|
||||
}
|
||||
match &result.fields[1].value {
|
||||
ParsedValue::Float(v) => assert!((v - 2.5).abs() < f64::EPSILON),
|
||||
other => panic!("expected float64, got {other:?}"),
|
||||
}
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parses_bitflags() {
|
||||
let mut f8 = field("flags8", FieldKind::Bitflags8);
|
||||
f8.flags = Some(vec![
|
||||
FlagDef {
|
||||
bit: 0,
|
||||
name: "A".into(),
|
||||
description: None,
|
||||
},
|
||||
FlagDef {
|
||||
bit: 3,
|
||||
name: "D".into(),
|
||||
description: None,
|
||||
},
|
||||
]);
|
||||
let mut f16 = field("flags16", FieldKind::Bitflags16);
|
||||
f16.flags = Some(vec![FlagDef {
|
||||
bit: 1,
|
||||
name: "B".into(),
|
||||
description: None,
|
||||
}]);
|
||||
|
||||
let result = parse_fields(&[0b0000_0101, 0x00, 0b0000_0010], &[f8, f16]).expect("parse");
|
||||
|
||||
match &result.fields[0].value {
|
||||
ParsedValue::Flags(flags) => {
|
||||
assert!(flags.iter().find(|f| f.name == "A").unwrap().set);
|
||||
assert!(!flags.iter().find(|f| f.name == "D").unwrap().set);
|
||||
}
|
||||
other => panic!("expected flags8, got {other:?}"),
|
||||
}
|
||||
match &result.fields[1].value {
|
||||
ParsedValue::Flags(flags) => assert!(flags[0].set),
|
||||
other => panic!("expected flags16, got {other:?}"),
|
||||
}
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parses_bytes_padding_and_strings() {
|
||||
let data = [
|
||||
0xAA, 0xBB, 0xCC, // bytes[3]
|
||||
0x00, 0x00, // padding[2]
|
||||
b'H', b'i', 0x00, 0x00, // string_fixed[4] -> "Hi"
|
||||
0x03, b'F', b'O', b'O', // string_lp8
|
||||
0x00, 0x02, b'B', b'R', // string_lp16 big-endian length
|
||||
];
|
||||
|
||||
let fields = vec![
|
||||
field_len("raw", FieldKind::Bytes, 3),
|
||||
field_len("pad", FieldKind::Padding, 2),
|
||||
field_len("fixed", FieldKind::StringFixed, 4),
|
||||
field("lp8", FieldKind::StringLp8),
|
||||
field("lp16", FieldKind::StringLp16),
|
||||
];
|
||||
let result = parse_fields(&data, &fields).expect("parse");
|
||||
|
||||
assert!(matches!(&result.fields[0].value, ParsedValue::Bytes(v) if v == &[0xAA, 0xBB, 0xCC]));
|
||||
assert!(matches!(result.fields[1].value, ParsedValue::None));
|
||||
assert!(matches!(&result.fields[2].value, ParsedValue::Str(s) if s == "Hi"));
|
||||
assert!(matches!(&result.fields[3].value, ParsedValue::Str(s) if s == "FOO"));
|
||||
assert!(matches!(&result.fields[4].value, ParsedValue::Str(s) if s == "BR"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn validates_crc16_and_crc32() {
|
||||
let payload = [0x01, 0x02, 0x03, 0x04];
|
||||
let crc16 = compute_crc16(&payload);
|
||||
let crc32 = compute_crc32(&payload);
|
||||
|
||||
let mut data = payload.to_vec();
|
||||
data.extend_from_slice(&crc16.to_be_bytes());
|
||||
data.extend_from_slice(&crc32.to_be_bytes());
|
||||
|
||||
let mut crc16_field = field("c16", FieldKind::Crc16);
|
||||
crc16_field.checksum_range = Some([0, 4]);
|
||||
let mut crc32_field = field("c32", FieldKind::Crc32);
|
||||
crc32_field.checksum_range = Some([0, 4]);
|
||||
|
||||
let fields = vec![
|
||||
field_len("payload", FieldKind::Bytes, 4),
|
||||
crc16_field,
|
||||
crc32_field,
|
||||
];
|
||||
let result = parse_fields(&data, &fields).expect("parse");
|
||||
assert_eq!(result.fields[1].checksum_valid, Some(true));
|
||||
assert_eq!(result.fields[2].checksum_valid, Some(true));
|
||||
|
||||
let mut bad = data.clone();
|
||||
bad[6] ^= 0xFF;
|
||||
let mut crc32_bad = field("c32", FieldKind::Crc32);
|
||||
crc32_bad.checksum_range = Some([0, 4]);
|
||||
let fields = vec![
|
||||
field_len("payload", FieldKind::Bytes, 4),
|
||||
crc32_bad,
|
||||
];
|
||||
let result = parse_fields(&bad, &fields).expect("parse");
|
||||
assert_eq!(result.fields[1].checksum_valid, Some(false));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parses_repeated_fixed_and_dynamic_count() {
|
||||
let data = [0x02, 0x10, 0x20, 0x11, 0x21];
|
||||
|
||||
let repeated_fixed = FieldDef {
|
||||
name: "items".into(),
|
||||
kind: FieldKind::Repeated,
|
||||
endian: None,
|
||||
description: None,
|
||||
flags: None,
|
||||
length: None,
|
||||
checksum_range: None,
|
||||
count: Some(CountSpec::Fixed(2)),
|
||||
fields: Some(vec![field("val", FieldKind::Uint8)]),
|
||||
};
|
||||
let result = parse_fields(&[0x10, 0x20, 0x11, 0x21], &[repeated_fixed]).expect("parse");
|
||||
let children = result.fields[0].children.as_ref().expect("children");
|
||||
assert_eq!(children.len(), 2);
|
||||
assert!(matches!(children[0].value, ParsedValue::Uint(0x10)));
|
||||
assert!(matches!(children[1].value, ParsedValue::Uint(0x20)));
|
||||
|
||||
let repeated_dynamic = FieldDef {
|
||||
name: "list".into(),
|
||||
kind: FieldKind::Repeated,
|
||||
endian: None,
|
||||
description: None,
|
||||
flags: None,
|
||||
length: None,
|
||||
checksum_range: None,
|
||||
count: Some(CountSpec::Field("count".into())),
|
||||
fields: Some(vec![field("val", FieldKind::Uint8)]),
|
||||
};
|
||||
let result = parse_fields(&data, &[field("count", FieldKind::Uint8), repeated_dynamic]).expect("parse");
|
||||
let children = result.fields[1].children.as_ref().expect("children");
|
||||
assert_eq!(children.len(), 2);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn errors_on_truncated_buffer() {
|
||||
let result = parse_fields(&[0x01], &[field("u16", FieldKind::Uint16)]);
|
||||
assert!(result.is_err());
|
||||
assert!(result.unwrap_err().contains("Not enough bytes"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn errors_on_missing_required_field_options() {
|
||||
let err = parse_fields(&[0x01], &[field("raw", FieldKind::Bytes)]).unwrap_err();
|
||||
assert!(err.contains("requires 'length'"));
|
||||
|
||||
let repeated = FieldDef {
|
||||
name: "r".into(),
|
||||
kind: FieldKind::Repeated,
|
||||
endian: None,
|
||||
description: None,
|
||||
flags: None,
|
||||
length: None,
|
||||
checksum_range: None,
|
||||
count: Some(CountSpec::Fixed(1)),
|
||||
fields: None,
|
||||
};
|
||||
let err = parse_fields(&[0x01], &[repeated]).unwrap_err();
|
||||
assert!(err.contains("requires 'fields'"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parses_example_protocol_frame() {
|
||||
let header = [
|
||||
0xFF, 0x05, b'H', b'e', b'l', b'l', b'o', 0x00, 0x01, 0x02, 0x03, b'A', b'B', b'C',
|
||||
b'D',
|
||||
];
|
||||
let crc32 = compute_crc32(&header[..11]);
|
||||
let mut data = header.to_vec();
|
||||
data.extend_from_slice(&crc32.to_be_bytes());
|
||||
data.extend_from_slice(&[0x00, 0x03]); // flags: ACK + SYN
|
||||
|
||||
let schema_json = include_str!("../../frontend/src/fixtures/example-schema.json");
|
||||
let schema: Schema = serde_json::from_str(schema_json).expect("example schema");
|
||||
let result = parse_fields(&data, &schema.fields).expect("example frame");
|
||||
|
||||
assert_eq!(result.total_bytes, data.len());
|
||||
assert_eq!(result.consumed_bytes, data.len());
|
||||
assert_eq!(result.fields.len(), 7);
|
||||
|
||||
assert!(matches!(result.fields[0].value, ParsedValue::Uint(0xFF)));
|
||||
assert!(matches!(&result.fields[2].value, ParsedValue::Str(s) if s == "Hello"));
|
||||
assert!(matches!(&result.fields[4].value, ParsedValue::Str(s) if s == "ABCD"));
|
||||
assert_eq!(result.fields[5].checksum_valid, Some(true));
|
||||
|
||||
match &result.fields[6].value {
|
||||
ParsedValue::Flags(flags) => {
|
||||
assert!(flags.iter().find(|f| f.name == "ACK").unwrap().set);
|
||||
assert!(flags.iter().find(|f| f.name == "SYN").unwrap().set);
|
||||
assert!(!flags.iter().find(|f| f.name == "FIN").unwrap().set);
|
||||
}
|
||||
other => panic!("expected flags, got {other:?}"),
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user