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std.crypto.tls: fix fetching https://nginx.org

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Note that the removed `error.TlsIllegalParameter` case is still caught
below when it is compared to a fixed-length string, but after checking
the proper protocol version requirement first.
This commit is contained in:
Jacob Young 2024-11-01 00:11:44 -04:00
parent c2a779ae79
commit e184b15a66
1 changed files with 3 additions and 3 deletions
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6
lib/std/crypto/tls/Client.zig
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@ -257,7 +257,7 @@ pub fn init(stream: anytype, ca_bundle: Certificate.Bundle, host: []const u8) In
if (handshake_type != .server_hello) return error.TlsUnexpectedMessage;
const length = ptd.decode(u24);
var hsd = try ptd.sub(length);
try hsd.ensure(2 + 32 + 1 + 32 + 2 + 1);
try hsd.ensure(2 + 32 + 1);
const legacy_version = hsd.decode(u16);
@memcpy(&server_hello_rand, hsd.array(32));
if (mem.eql(u8, &server_hello_rand, &tls.hello_retry_request_sequence)) {
@ -266,8 +266,8 @@ pub fn init(stream: anytype, ca_bundle: Certificate.Bundle, host: []const u8) In
return error.TlsUnexpectedMessage;
}
const legacy_session_id_echo_len = hsd.decode(u8);
if (legacy_session_id_echo_len != 32) return error.TlsIllegalParameter;
const legacy_session_id_echo = hsd.array(32);
try hsd.ensure(legacy_session_id_echo_len + 2 + 1);
const legacy_session_id_echo = hsd.slice(legacy_session_id_echo_len);
cipher_suite_tag = hsd.decode(tls.CipherSuite);
hsd.skip(1); // legacy_compression_method
var supported_version: ?u16 = null;