Replace the non-X.509-named error code `MBEDTLS_ERR_OID_NOT_FOUND` with
`MBEDTLS_ERR_X509_UNKNOWN_OID`, which already exists and is currently not
used for anything.
Public functions in X.509 propagate this error code, so it needs to have a
public name.
Remove the definition of `MBEDTLS_ERR_OID_NOT_FOUND` in `x509_oid.h`, then
```
git grep -l MBEDTLS_ERR_OID_NOT_FOUND | xargs perl -i -pe 's/\bMBEDTLS_ERR_OID_NOT_FOUND\b/MBEDTLS_ERR_X509_UNKNOWN_OID/g'
```
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Avoid clashes with the functions and the type that are still defined in
TF-PSA-Crypto. They are now internal names, so it doesn't really matter, but
having the same name as the ones declared in TF-PSA-Crypto's `oid.h` would
cause problems during the transition.
Remove the unused name for `struct mbedtls_oid_descriptor_t`, and rename the
rest:
```
perl -i -pe 's/mbedtls_oid_/mbedtls_x509_oid_/g' library/x509_oid.[hc]
./framework/scripts/code_style.py --fix library/x509_oid.[hc]
```
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
The OID module is used by both crypto and X.509. It has moved to the
`tf-psa-crypto` subdirectory, and the sibling commit
08d8cc57dbe7be54fe3f88ecbc2729300c48d450 removes this subdirectory from the
`mbedtls` repository in order to make `tf-psa-crypto` a submodule. We want
to access the relevant parts directly from X.509 rather than go through the
crypto repository, because OID functions are only accessible as private
interfaces, and crypto doesn't know when a particular OID function is needed
in the build since it depends on X.509 configuration options.
Make a copy of the OID module and its unit tests. In a follow-up, the X.509
module will switch to consuming this copy rather than the one that went into
TF-PSA-Crypto.
Rename the files from `*oid*` to `*x509_oid*` to follow the naming
convention that submodules of X.509 are prefixed with `x509`. This also
avoids file name clashes with TF-PSA-Crypto.
Since OID is not a public interface of Mbed TLS 4.x, move the header file
into `library`.
This commit only makes the files available. Subsequent commits will take
care of making these files used in the build.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>