_ Git - dnssec-prover/blob - wasmpack/src/lib.rs

   1 //! WASM-compatible verification wrappers
   2
   3 use dnssec_prover::ser::parse_rr_stream;
   4 use dnssec_prover::validation::{verify_rr_stream, ValidationError};
   5
   6 use wasm_bindgen::prelude::wasm_bindgen;
   7
   8 use core::fmt::Write;
   9
  10 #[global_allocator]
  11 static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
  12
  13 #[wasm_bindgen]
  14 /// Verifies an RFC 9102-formatted proof and returns the [`VerifiedRRStream`] in JSON form.
  15 pub fn verify_byte_stream(stream: Vec<u8>) -> String {
  16         match do_verify_byte_stream(stream) {
  17                 Ok(r) => r,
  18                 Err(e) => format!("{{\"error\":\"{:?}\"}}", e),
  19         }
  20 }
  21
  22 fn do_verify_byte_stream(stream: Vec<u8>) -> Result<String, ValidationError> {
  23         let rrs = parse_rr_stream(&stream).map_err(|()| ValidationError::Invalid)?;
  24         let verified_rrs = verify_rr_stream(&rrs)?;
  25         let mut resp = String::new();
  26         write!(&mut resp, "{}",
  27                 format_args!("{{\"valid_from\": {}, \"expires\": {}, \"max_cache_ttl\": {}, \"verified_rrs\": [",
  28                 verified_rrs.valid_from, verified_rrs.expires, verified_rrs.max_cache_ttl)
  29         ).expect("Write to a String shouldn't fail");
  30         for (idx, rr) in verified_rrs.verified_rrs.iter().enumerate() {
  31                 write!(&mut resp, "{}{}", if idx != 0 { ", " } else { "" }, rr.json())
  32                         .expect("Write to a String shouldn't fail");
  33         }
  34         resp += "]}";
  35         Ok(resp)
  36 }