core: Support usage of gpgtar for verifying a signed archive

* src/gpgme.h.in (gpgme_verify_flags_t): New enum.
(GPGME_VERIFY_ARCHIVE): New const.
(gpgme_op_verify_ext_start): New func.
(gpgme_op_verify_ext): New func.
* src/gpgme.def, src/libgpgme.vers: Add new functions.
* src/verify.c (gpgme_op_verify_ext_start): New.
(gpgme_op_verify_ext): New.
(verify_start): Add arg FLAGS.  Pass the flags to
_gpgme_engine_op_verify.
(gpgme_op_verify_start): Call gpgme_op_verify_ext_start with 0 for
FLAGS.
(gpgme_op_verify): Call gpgme_op_verify_ext with 0 for FLAGS.
* src/engine.c, src/engine.h (_gpgme_engine_op_verify): Add arg FLAGS.
* src/engine-backend.h (struct engine_ops): Add FLAGS to 'verify'.
* src/engine-gpg.c (gpg_verify): Add arg FLAGS. Set use_gpgtar engine
flag if GPGME_VERIFY_ARCHIVE flag is set. Check for new enough gpg. Use
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/engine-gpgsm.c (gpgsm_verify): Add arg FLAGS. Return error if
GPGME_VERIFY_ARCHIVE flag is set.
* src/engine-uiserver.c (uiserver_verify): Ditto.

* tests/run-verify.c (show_usage): New options --archive, --directory,
and --diagnostics.
(main): Parse new options. Verify and extract with gpgtar if --archive
is given. Set file name of output data to value of --directory option.
Print stderr of gpg/gpgtar if --diagnostics is given.
--

GnuPG-bug-id: 6342

1 files changed, 17 insertions, 0 deletions

diff --git a/src/gpgme.h.in b/src/gpgme.h.in
index b498cd3b..a337a124 100644
--- a/src/gpgme.h.in
+++ b/src/gpgme.h.in
@@ -1634,6 +1634,13 @@ typedef struct _gpgme_op_verify_result *gpgme_verify_result_t;
 /* Retrieve a pointer to the result of the verify operation.  */
 gpgme_verify_result_t gpgme_op_verify_result (gpgme_ctx_t ctx);
 
+/* The valid verify flags.  */
+typedef enum
+  {
+    GPGME_VERIFY_ARCHIVE = 1
+  }
+gpgme_verify_flags_t;
+
 /* Verify within CTX that SIG is a valid signature for TEXT.  */
 gpgme_error_t gpgme_op_verify_start (gpgme_ctx_t ctx, gpgme_data_t sig,
 				     gpgme_data_t signed_text,
@@ -1641,6 +1648,16 @@ gpgme_error_t gpgme_op_verify_start (gpgme_ctx_t ctx, gpgme_data_t sig,
 gpgme_error_t gpgme_op_verify (gpgme_ctx_t ctx, gpgme_data_t sig,
 			       gpgme_data_t signed_text,
 			       gpgme_data_t plaintext);
+gpgme_error_t gpgme_op_verify_ext_start (gpgme_ctx_t ctx,
+                                         gpgme_verify_flags_t flags,
+                                         gpgme_data_t sig,
+                                         gpgme_data_t signed_text,
+                                         gpgme_data_t plaintext);
+gpgme_error_t gpgme_op_verify_ext (gpgme_ctx_t ctx,
+                                   gpgme_verify_flags_t flags,
+                                   gpgme_data_t sig,
+                                   gpgme_data_t signed_text,
+                                   gpgme_data_t plaintext);
 
 
 /*