core: Implement adding ADSKs through gpgme_createsubkey

* src/engine-gpg.c: Add and use function for adding ADSKs.
* src/genkey.c: Prevent error due to no status line.
* src/gpgme.h.in: Add flag GPGME_CREATE_ADSK
* doc/gpgme.texi: Add documentation for ADSKs
* tests/run-genkey.c: Add test for adding ADSKs
--

This adds the ability to add ADSKs through
the gpgme_createsubkey interface.
The function must be called with NULL userid,
the ADSK fingerprint in algo
and the GPGME_CREATE_ADSK flag.

1 files changed, 9 insertions, 0 deletions

diff --git a/doc/gpgme.texi b/doc/gpgme.texi
index bdac95a3..258ef0a5 100644
--- a/doc/gpgme.texi
+++ b/doc/gpgme.texi
@@ -4355,6 +4355,11 @@ override this check.
 
 Request generation of keys that do not expire.
 
+@item GPGME_CREATE_ADSK
+@since{1.24.0}
+
+Add an ADSK to the key.
+
 @end table
 
 After the operation completed successfully, information about the
@@ -4430,6 +4435,10 @@ values for timestamps and thus can only encode dates up to the year
 @var{flags} takes the same values as described above for
 @code{gpgme_op_createkey}.
 
+If the @code{GPGME_CREATE_ADSK} flag is set, the subkey fingerprint
+given in the @code{algo} parameter is added as an ADSK
+to the key.
+
 After the operation completed successfully, information about the
 created key can be retrieved with @code{gpgme_op_genkey_result}.