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Bug 1154399 - Part 2: Simplify and un-inline OptionalVersion. r=keeler

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Also fixes the wrong comment. The syntax for version in OCSP and X.509
certs is identical.

--HG--
extra : rebase_source : 744a2998ce8c55a61fbbc1966bc22e4903fa2484
This commit is contained in:
Brian Smith 2015-04-14 05:32:29 -10:00
parent 0cac719ba9
commit d09798e9f5
2 changed files with 33 additions and 37 deletions
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28
security/pkix/lib/pkixder.cpp
View File

@ -577,4 +577,32 @@ IntegralValue(Reader& input, uint8_t tag, /*out*/ uint8_t& value)
} // namespace internal
Result
OptionalVersion(Reader& input, /*out*/ Version& version)
{
static const uint8_t TAG = CONTEXT_SPECIFIC | CONSTRUCTED | 0;
if (!input.Peek(TAG)) {
version = Version::v1;
return Success;
}
return Nested(input, TAG, [&version](Reader& value) -> Result {
uint8_t integerValue;
Result rv = Integer(value, integerValue);
if (rv != Success) {
return rv;
}
// XXX(bug 1031093): We shouldn't accept an explicit encoding of v1,
// but we do here for compatibility reasons.
switch (integerValue) {
case static_cast<uint8_t>(Version::v3): version = Version::v3; break;
case static_cast<uint8_t>(Version::v2): version = Version::v2; break;
case static_cast<uint8_t>(Version::v1): version = Version::v1; break;
case static_cast<uint8_t>(Version::v4): version = Version::v4; break;
default:
return Result::ERROR_BAD_DER;
}
return Success;
});
}
} } } // namespace mozilla::pkix::der

42
security/pkix/lib/pkixder.h
View File

@ -459,43 +459,11 @@ CertificateSerialNumber(Reader& input, /*out*/ Input& value)
// only supports v1.
enum class Version { v1 = 0, v2 = 1, v3 = 2, v4 = 3 };
// X.509 Certificate and OCSP ResponseData both use this
// "[0] EXPLICIT Version DEFAULT <defaultVersion>" construct, but with
// different default versions.
inline Result
OptionalVersion(Reader& input, /*out*/ Version& version)
{
static const uint8_t TAG = CONTEXT_SPECIFIC | CONSTRUCTED | 0;
if (!input.Peek(TAG)) {
version = Version::v1;
return Success;
}
Reader value;
Result rv = ExpectTagAndGetValue(input, TAG, value);
if (rv != Success) {
return rv;
}
uint8_t integerValue;
rv = Integer(value, integerValue);
if (rv != Success) {
return rv;
}
rv = End(value);
if (rv != Success) {
return rv;
}
switch (integerValue) {
case static_cast<uint8_t>(Version::v3): version = Version::v3; break;
case static_cast<uint8_t>(Version::v2): version = Version::v2; break;
// XXX(bug 1031093): We shouldn't accept an explicit encoding of v1, but we
// do here for compatibility reasons.
case static_cast<uint8_t>(Version::v1): version = Version::v1; break;
case static_cast<uint8_t>(Version::v4): version = Version::v4; break;
default:
return Result::ERROR_BAD_DER;
}
return Success;
}
// X.509 Certificate and OCSP ResponseData both use
// "[0] EXPLICIT Version DEFAULT v1". Although an explicit encoding of v1 is
// illegal, we support it because some real-world OCSP responses explicitly
// encode it.
Result OptionalVersion(Reader& input, /*out*/ Version& version);
template <typename ExtensionHandler>
inline Result