Almost everything in <openssl/asn1.h> uses ASN1_STRING, and there are a
lot of unspoken assumptions in the library about the type field, so it
needs quite a bit of text.
Change-Id: Ied56c9428069477da8ecb17a174da4320e573fa1
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/44184
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
This still needs some overall documentation describing ASN1_STRING's
relationship to all the other types, but start with the easy bits.
Change-Id: I968d4b1b3d57a9b543b3db489d14cf0789e30eb3
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/44049
Reviewed-by: Adam Langley <agl@google.com>
The free and dup macros are fine and can be replaced with their function
counterparts, but the new macros call ASN1_STRING_type_new with a
representative type in the CHOICE. This does not match what the
corresponding functions (e.g. ASN1_TIME_new) do.
The functions go through tasn_new.c and end up at ASN1_primitive_new.
That ends up creating an ASN1_STRING with type -1 and the
ASN1_STRING_FLAG_MSTRING flag set. X509_time_adj_ex uses the flag to
determine whether to trigger X.509's UTCTime vs GeneralizedTime
switching.
Confusingly, ASN1_TIME_adj, ASN1_UTCTIME_adj, and
ASN1_GENERALIZEDTIME_adj trigger this behavior based on the function
itself. That seems more robust (X509_set1_notBefore might accidentally
lose the flag), so maybe we can remove this flag. In the meantime, at
least remove the old macros so we don't create the wrong type.
Update-Note: Some M_ASN1 macros were removed. Code search says there
were no uses, and OpenSSL upstream removed all of them.
Change-Id: Iffa63f2624c38e64679207720c5ebd5241da644c
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/44047
Reviewed-by: Adam Langley <agl@google.com>
At one point in the SSLeay days, all the ASN1_STRING typedefs were
separate structs (but only in debug builds) and the M_ASN1_* macros
included type casts to handle this.
This is long gone, but we still have the M_ASN1_* macros. Remove the
casts and switch code within the library to call the macros. Some
subtleties:
- The "MSTRING" types (what OpenSSL calls its built-in CHOICEs
containing some set of string types) are weird because the M_FOO_new()
macro and the tasn_new.c FOO_new() function behave differently. I've
split those into a separate CL.
- ASN1_STRING_type, etc., call into the macro, which accesses the field
directly. This CL inverts the dependency.
- ASN1_INTEGER_new and ASN1_INTEGER_free, etc., are generated via
IMPLEMENT_ASN1_STRING_FUNCTIONS in tasn_typ.c. I've pointed
M_ASN1_INTEGER_new and M_ASN1_INTEGER_free to these fields. (The free
function is a no-op, but consistent.)
- The other macros like M_ASN1_BIT_STRING_dup largely do not have
corresponding functions. I've aligned with OpenSSL in just using the
generic ASN1_STRING_dup function. But some others, like
M_ASN1_OCTET_STRING_dup have a corresponding ASN1_OCTET_STRING_dup
function. OpenSSL retained these, so I have too.
Update-Note: Some external code uses the M_ASN1_* macros. This should
remain compatible, but some type errors may have gotten through
unnoticed. This CL restores type-checking.
Change-Id: I8656abc7d0f179192e05a852c97483c021ad9b20
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/44045
Reviewed-by: Adam Langley <agl@google.com>
Some of the X509 functions are hard to document without first
documenting the ASN.1 types themselves. (ASN1_TYPE's goofy
representation is leaked everywhere.)
Change-Id: I0adcf055414925f9e39c8293cbd42d29f0db3143
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/44044
Reviewed-by: Adam Langley <agl@google.com>
Sadly we need to keep ASN1_put_eoc. Ruby uses it.
OpenSSL's PKCS#7 implementation generated an "ndef" variant of the
encoding functions, to request indefinite-length encoding. Remove the
support code for this.
Update-Note: Types that use one of the NDEF macros in asn1t.h will fail
to compile. This CL should not affect certificate parsing.
Change-Id: I6e03f6927ea4b7a6acd73ac58bf49512b39baab8
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/43889
Reviewed-by: Adam Langley <agl@google.com>
This function is unused and quite unsafe.
Update-Note: Use ASN1_STRING_set instead, though this function appears
to be unused.
Change-Id: Ie6f4dec4b9e11ebde95b322ef91e1b8d63fbb8af
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/42724
Reviewed-by: Adam Langley <agl@google.com>
David Benjamin
Adam Langley