parse: add time; cert: add policy constraints
parent
a57998dc2d
commit
45216e8af6
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@ -66,6 +66,11 @@ version = "5.1.2"
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default-features = false
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features = []
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[dependencies.chrono]
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version = "0.4.19"
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default-features = false
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features = []
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[dependencies.simple_logger]
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version = "1.11.0"
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optional = true
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@ -3,6 +3,8 @@ use num_enum::TryFromPrimitive;
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use generic_array::GenericArray;
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use chrono::{DateTime, FixedOffset};
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use crate::parse::parse_asn1_der_rsa_public_key;
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use crate::parse::parse_rsa_ssa_pss_parameters;
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use crate::parse::parse_ecdsa_signature;
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@ -38,7 +40,7 @@ pub struct TBSCertificate<'a> {
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pub serial_number: &'a [u8],
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pub signature: AlgorithmIdentifier<'a>,
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pub issuer: Name<'a>,
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pub validity: Validity<'a>,
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pub validity: Validity,
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pub subject: Name<'a>,
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pub subject_public_key_info: SubjectPublicKeyInfo<'a>,
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pub issuer_unique_id: Option<&'a [u8]>,
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@ -57,9 +59,9 @@ pub enum Version {
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}
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#[derive(Debug, Clone)]
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pub struct Validity<'a> {
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pub not_before: Time<'a>,
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pub not_after: Time<'a>,
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pub struct Validity {
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pub not_before: DateTime<FixedOffset>,
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pub not_after: DateTime<FixedOffset>,
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}
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#[derive(Debug, Clone)]
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@ -118,12 +120,19 @@ pub enum ExtensionValue<'a> {
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// Owns a list of acceptable/unacceptable GeneralNames
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// Maximum field should not exist, minimum field is always 0
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// Vector size of 0 equivalent to NIL
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// While it doesn't make sense to have both subtrees,
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// the RFC (RFC 5280) mandated that any subtree stated in
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// excluded subtree cannot be permitted, even if it is part of
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// the permitted subtree.
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// It is probably intentional to have OPTIONAL over CHOICE
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permitted_subtrees: Vec<GeneralName<'a>>,
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excluded_subtrees: Vec<GeneralName<'a>>,
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},
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// Policy mapping will not be supported
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// PolicyConstraints,
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PolicyConstraints {
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require_explicit_policy: Option<u8>,
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inhibit_policy_mapping: Option<u8>,
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},
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ExtendedKeyUsage {
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// A list of all possible extended key usage in OID
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@ -120,7 +120,7 @@ const CA_SIGNED_CERT: [u8; 0x0356] =
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"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"
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);
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const SELF_SIGNED_WITH_SAN: [u8; 0x065B] =
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const SELF_SIGNED_WITH_SAN: [u8; 0x046C] =
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hex_literal::hex!(
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"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"
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"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"
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);
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@ -74,6 +74,7 @@ pub const CERT_EXT_KEY_USAGE: &'static [u8] = &[85, 29, 37];
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pub const CERT_INHIBIT_ANY_POLICY: &'static [u8] = &[85, 29, 54]; // 2.5.29.54
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pub const CERT_SUBJECTALTNAME: &'static [u8] = &[85, 29, 17]; // 2.5.29.17
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pub const CERT_NAME_CONSTRAINTS: &'static [u8] = &[85, 29, 30]; // 2.5.29.30
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pub const CERT_POLICY_CONSTRAINTS: &'static [u8] = &[85, 29, 36]; // 2.5.29.36
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// Extended Key Extensions
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pub const ANY_EXTENDED_KEY_USAGE: &'static [u8] = &[85, 29, 37, 0]; // 2.5.29.37.0
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pub const ID_KP_SERVER_AUTH: &'static [u8] = &[43, 6, 1, 5, 5, 7, 3, 1]; // 1.3.6.1.5.5.7.3.1
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173
src/parse.rs
173
src/parse.rs
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@ -7,6 +7,11 @@ use nom::combinator::opt;
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use nom::sequence::preceded;
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use nom::sequence::tuple;
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use nom::error::ErrorKind;
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use nom::character::complete::digit0;
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use nom::character::is_digit;
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use chrono::{DateTime, FixedOffset, TimeZone};
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use heapless::{String, consts::*};
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use byteorder::{ByteOrder, NetworkEndian};
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@ -26,7 +31,7 @@ use crate::certificate::{
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TBSCertificate as Asn1DerTBSCertificate,
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Name as Asn1DerName,
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AttributeTypeAndValue as Asn1DerAttribute,
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GeneralName as Asn1DerGeneralName
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GeneralName as Asn1DerGeneralName,
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};
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use crate::oid;
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@ -876,26 +881,121 @@ pub fn parse_asn1_der_validity(bytes: &[u8]) -> IResult<&[u8], Asn1DerValidity>
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}
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// Parser for Time Representation (0x17: UTCTime, 0x18: GeneralizedTime)
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pub fn parse_ans1_der_time(bytes: &[u8]) -> IResult<&[u8], Asn1DerTime> {
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pub fn parse_ans1_der_time(bytes: &[u8]) -> IResult<&[u8], DateTime<FixedOffset>> {
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let (rest, (tag_val, _, value)) = parse_asn1_der_object(bytes)?;
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// Handle UTCTime, Gen.Time and Invalid Tag values
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match tag_val {
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0x17 => {
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let (_, date_time) = complete(
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parse_asn1_der_utc_time
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)(value)?;
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Ok((
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rest,
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Asn1DerTime::UTCTime(value)
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date_time
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))
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},
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0x18 => {
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// TODO: Not implemented
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let (_, date_time) = complete(
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parse_asn1_der_generalized_time
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)(value)?;
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Ok((
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rest,
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Asn1DerTime::GeneralizedTime(value)
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date_time
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))
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},
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_ => Err(nom::Err::Failure((&[], ErrorKind::Verify)))
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}
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}
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// Parser for UTCTime
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pub fn parse_asn1_der_utc_time(bytes: &[u8]) -> IResult<&[u8], DateTime<FixedOffset>> {
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// Buffer for building string
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let mut string: String<U19> = String::new();
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// Decide the appropriate century (1950 to 2049)
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let year_tag: u8 = core::str::from_utf8(&bytes[..2]).unwrap().parse().unwrap();
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if year_tag < 50 {
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string.push_str("20");
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} else {
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string.push_str("19");
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}
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// Take out YYMMDDhhmm first
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let (rest, first_part) = take(10_usize)(bytes)?;
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string.push_str(core::str::from_utf8(first_part).unwrap()).unwrap();
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let (rest, _) = if u8::is_ascii_digit(&rest[0]) {
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let (rest, seconds) = take(2_usize)(rest)?;
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string.push_str(core::str::from_utf8(seconds).unwrap()).unwrap();
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(rest, seconds)
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} else {
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string.push_str("00").unwrap();
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// The second parameter will not be used anymore
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(rest, rest)
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};
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match rest[0] as char {
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'Z' => {
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string.push_str("+0000")
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},
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_ => {
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string.push_str(core::str::from_utf8(rest).unwrap())
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}
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};
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Ok((
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&[],
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DateTime::parse_from_str(
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&string, "%Y%m%d%H%M%S%z"
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).unwrap()
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))
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}
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// Parser for GeneralizedTime
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pub fn parse_asn1_der_generalized_time(bytes: &[u8]) -> IResult<&[u8], DateTime<FixedOffset>> {
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// Buffer for building string
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let mut string: String<U23> = String::new();
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// Find the first non-digit byte
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let mut first_non_digit_index = 0;
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while first_non_digit_index < bytes.len() {
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if !u8::is_ascii_digit(&bytes[first_non_digit_index]) {
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break;
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}
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first_non_digit_index += 1;
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}
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string.push_str(core::str::from_utf8(
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&bytes[..first_non_digit_index]).unwrap()
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).unwrap();
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match first_non_digit_index {
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10 => string.push_str("0000.000").unwrap(),
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12 => string.push_str("00.000").unwrap(),
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14 => string.push_str(".000").unwrap(),
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18 => {},
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_ => return Err(nom::Err::Failure((&[], ErrorKind::Verify)))
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};
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match bytes.len() - first_non_digit_index {
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// Local time, without relative time diff to UTC time
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// Assume UTC
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0 | 1 => string.push_str("+0000").unwrap(),
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5 => string.push_str(core::str::from_utf8(
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&bytes[first_non_digit_index..]).unwrap()
|
||||
).unwrap(),
|
||||
_ => return Err(nom::Err::Failure((&[], ErrorKind::Verify)))
|
||||
};
|
||||
|
||||
Ok((
|
||||
&[],
|
||||
DateTime::parse_from_str(
|
||||
&string, "%Y%m%d%H%M%S%.3f%z"
|
||||
).unwrap()
|
||||
))
|
||||
}
|
||||
|
||||
// Parser for SubjectKeyPublicInfo (Sequence: 0x30)
|
||||
pub fn parse_asn1_der_subject_key_public_info(bytes: &[u8]) -> IResult<&[u8], Asn1DerSubjectPublicKeyInfo> {
|
||||
let (rest, (tag_val, _, value)) = parse_asn1_der_object(bytes)?;
|
||||
|
|
@ -1004,12 +1104,18 @@ pub fn parse_asn1_der_extension(bytes: &[u8]) -> IResult<&[u8], Asn1DerExtension
|
|||
parse_asn1_der_subject_alternative_name
|
||||
)(rem_ext_data)?;
|
||||
extension_value
|
||||
}
|
||||
},
|
||||
oid::CERT_NAME_CONSTRAINTS => {
|
||||
let (_, extension_value) = complete(
|
||||
parse_asn1_der_name_constraints
|
||||
)(rem_ext_data)?;
|
||||
extension_value
|
||||
},
|
||||
oid::CERT_POLICY_CONSTRAINTS => {
|
||||
let (_, extension_value) = complete(
|
||||
parse_asn1_der_policy_constraints
|
||||
)(rem_ext_data)?;
|
||||
extension_value
|
||||
}
|
||||
// TODO: Parse extension value for recognized extensions
|
||||
_ => Asn1DerExtensionValue::Unrecognized
|
||||
|
|
@ -1224,6 +1330,63 @@ pub fn parse_asn1_der_name_constraints(bytes: &[u8]) -> IResult<&[u8], Asn1DerEx
|
|||
))
|
||||
}
|
||||
|
||||
// Parser for policy constraints
|
||||
pub fn parse_asn1_der_policy_constraints(bytes: &[u8]) -> IResult<&[u8], Asn1DerExtensionValue> {
|
||||
// Strip sequence
|
||||
let (_, constraint_seq) = complete(
|
||||
parse_asn1_der_sequence
|
||||
)(bytes)?;
|
||||
|
||||
// Init policy constraints
|
||||
let mut require_explicit_policy = None;
|
||||
let mut inhibit_policy_mapping = None;
|
||||
|
||||
let (rest, (mut tag_val, _, mut policy)) = parse_asn1_der_object(constraint_seq)?;
|
||||
if tag_val == 0x80 {
|
||||
let temp = if policy.len() > 1 {
|
||||
// The maximum acceptable cert chain length would probably be less than 10
|
||||
128
|
||||
} else {
|
||||
policy[0]
|
||||
};
|
||||
require_explicit_policy.replace(temp);
|
||||
|
||||
if rest.len() == 0 {
|
||||
return Ok((
|
||||
&[],
|
||||
Asn1DerExtensionValue::PolicyConstraints {
|
||||
require_explicit_policy,
|
||||
inhibit_policy_mapping
|
||||
}
|
||||
))
|
||||
}
|
||||
|
||||
let (_, (second_tag_val, _, second_policy)) = complete(
|
||||
parse_asn1_der_object
|
||||
)(rest)?;
|
||||
tag_val = second_tag_val;
|
||||
policy = second_policy;
|
||||
}
|
||||
|
||||
if tag_val == 0x81 {
|
||||
let temp = if policy.len() > 1 {
|
||||
// The maximum acceptable cert chain length would probably be less than 10
|
||||
128
|
||||
} else {
|
||||
policy[0]
|
||||
};
|
||||
inhibit_policy_mapping.replace(temp);
|
||||
}
|
||||
|
||||
Ok((
|
||||
&[],
|
||||
Asn1DerExtensionValue::PolicyConstraints {
|
||||
require_explicit_policy,
|
||||
inhibit_policy_mapping
|
||||
}
|
||||
))
|
||||
}
|
||||
|
||||
// Parser for CertificatePolicies Extension (sequence: 0x30)
|
||||
pub fn parse_asn1_der_certificate_policies(bytes: &[u8]) -> IResult<&[u8], Asn1DerExtensionValue> {
|
||||
let (rest, (tag_val, _, mut value)) = parse_asn1_der_object(bytes)?;
|
||||
|
|
|
|||
Loading…
Reference in New Issue