core: Support usage of gpgtar for creating a signed archive

* src/gpgme.h.in (GPGME_SIG_MODE_ARCHIVE): New signature mode.
* src/engine-gpg.c (append_args_from_sender,
append_args_from_sig_notations): Use add_gpg_arg_with_value
for gpg-only options with a value.
(gpg_sign): Set use_gpgtar engine flag if GPGME_SIG_MODE_ARCHIVE mode
is set. Check for new enough gpg. Use add_gpg_arg_with_value for
gpg-only options with a value and add_gpg_arg for gpg-only options
without a value. Set extra options for gpgtar and pass input data to
stdin when using gpgtar.
* src/sign.c (sign_start): Add GPGME_SIG_MODE_ARCHIVE as valid mode.

* tests/run-sign.c (show_usage): New options --archive and
--diagnostics.
(main): Parse new options. Sign with gpgtar if --archive is given.
Print stderr of gpg/gpgtar if --diagnostics is given.
--

With this change the gpgme_op_sign* functions get support for
creating a signed archive from files and/or directories passed as
NUL-separated list in the "in" data with gpgtar.

GnuPG-bug-id: 6342

1 files changed, 1 insertions, 1 deletions

diff --git a/src/sign.c b/src/sign.c
index 31db9bde..7617d27f 100644
--- a/src/sign.c
+++ b/src/sign.c
@@ -447,7 +447,7 @@ sign_start (gpgme_ctx_t ctx, int synchronous, gpgme_data_t plain,
     return err;
 
   if (mode != GPGME_SIG_MODE_NORMAL && mode != GPGME_SIG_MODE_DETACH
-      && mode != GPGME_SIG_MODE_CLEAR)
+      && mode != GPGME_SIG_MODE_CLEAR && mode != GPGME_SIG_MODE_ARCHIVE)
     return gpg_error (GPG_ERR_INV_VALUE);
 
   if (!plain)