core: Extend gpgme_subkey_t to carry the keygrip.

* src/gpgme.h.in (struct _gpgme_subkey): Add file 'keygrip'.
* src/key.c (gpgme_key_unref): Free KEYGRIP.
* src/keylist.c (keylist_colon_handler): Parse GRP records.
* src/engine-gpg.c (gpg_keylist_build_options): Do not use
--with-fingerprint options for gpg versions >= 2.1.15.

* tests/run-keylist.c (main): Print subkeys and keygrips.

Signed-off-by: Werner Koch <wk@gnupg.org>

NEWS

@@ -11,6 +11,7 @@ Noteworthy changes in version 1.7.0 (unreleased) [C25/A14/R_]
  GPGME_PK_EDDSA                 NEW.
  gpgme_set_ctx_flag             NEW.
  gpgme_signature_t              EXTENDED: New field tofu.
+ gpgme_subkey_t                 EXTENDED: New field keygrip.
  gpgme_tofu_policy_t            NEW.
  gpgme_tofu_info_t              NEW.
  GPGME_STATUS_KEY_CONSIDERED    NEW.

src/engine-gpg.c

@@ -2283,12 +2283,19 @@ gpg_keylist_build_options (engine_gpg_t gpg, int secret_only,
   gpg_error_t err;
 
   err = add_arg (gpg, "--with-colons");
+
+  /* Since gpg 2.1.15 fingerprints are always printed, thus there is
+   * no more need to explictly reqeust them.  */
+  if (!have_gpg_version (gpg, "2.1.15"))
+    {
       if (!err)
         err = add_arg (gpg, "--fixed-list-mode");
       if (!err)
         err = add_arg (gpg, "--with-fingerprint");
       if (!err)
         err = add_arg (gpg, "--with-fingerprint");
+    }
+
   if (!err && (mode & GPGME_KEYLIST_MODE_WITH_SECRET))
     err = add_arg (gpg, "--with-secret");
   if (!err

src/gpgme.h.in

@@ -691,6 +691,9 @@ struct _gpgme_subkey
 
   /* The name of the curve for ECC algorithms or NULL.  */
   char *curve;
+
+  /* The keygrip of the subkey in hex digit form or NULL if not availabale.  */
+  char *keygrip;
 };
 typedef struct _gpgme_subkey *gpgme_subkey_t;
 

src/key.c

@@ -333,6 +333,8 @@ gpgme_key_unref (gpgme_key_t key)
 	free (subkey->fpr);
       if (subkey->curve)
 	free (subkey->curve);
+      if (subkey->keygrip)
+	free (subkey->keygrip);
       if (subkey->card_number)
 	free (subkey->card_number);
       free (subkey);

src/keylist.c

@@ -426,7 +426,7 @@ keylist_colon_handler (void *priv, char *line)
   gpgme_ctx_t ctx = (gpgme_ctx_t) priv;
   enum
     {
-      RT_NONE, RT_SIG, RT_UID, RT_SUB, RT_PUB, RT_FPR,
+      RT_NONE, RT_SIG, RT_UID, RT_SUB, RT_PUB, RT_FPR, RT_GRP,
       RT_SSB, RT_SEC, RT_CRT, RT_CRS, RT_REV, RT_SPK
     }
   rectype = RT_NONE;
@@ -479,6 +479,8 @@ keylist_colon_handler (void *priv, char *line)
     rectype = RT_CRS;
   else if (!strcmp (field[0], "fpr") && key)
     rectype = RT_FPR;
+  else if (!strcmp (field[0], "grp") && key)
+    rectype = RT_GRP;
   else if (!strcmp (field[0], "uid") && key)
     rectype = RT_UID;
   else if (!strcmp (field[0], "sub") && key)
@@ -717,6 +719,22 @@ keylist_colon_handler (void *priv, char *line)
 	}
       break;
 
+    case RT_GRP:
+      /* Field 10 has the keygrip.  */
+      if (fields >= 10 && field[9] && *field[9])
+	{
+          /* Need to apply it to the last subkey because all subkeys
+             have a keygrip. */
+          subkey = key->_last_subkey;
+          if (!subkey->keygrip)
+            {
+              subkey->keygrip = strdup (field[9]);
+              if (!subkey->keygrip)
+                return gpg_error_from_syserror ();
+            }
+	}
+      break;
+
     case RT_SIG:
     case RT_REV:
       if (!opd->tmp_uid)

tests/run-keylist.c

@@ -67,6 +67,7 @@ main (int argc, char **argv)
   gpgme_ctx_t ctx;
   gpgme_keylist_mode_t mode = 0;
   gpgme_key_t key;
+  gpgme_subkey_t subkey;
   gpgme_keylist_result_t result;
   int import = 0;
   gpgme_key_t keyarray[100];
@@ -173,22 +174,54 @@ main (int argc, char **argv)
     {
       gpgme_user_id_t uid;
       int nuids;
-
+      int nsub;
 
       printf ("keyid   : %s\n", key->subkeys?nonnull (key->subkeys->keyid):"?");
       printf ("fpr     : %s\n", key->subkeys?nonnull (key->subkeys->fpr):"?");
+      if (key->subkeys && key->subkeys->keygrip)
+        printf ("grip    : %s\n", key->subkeys->keygrip);
+      if (key->subkeys && key->subkeys->curve)
+            printf ("curve   : %s\n", key->subkeys->curve);
       printf ("caps    : %s%s%s%s\n",
               key->can_encrypt? "e":"",
               key->can_sign? "s":"",
               key->can_certify? "c":"",
               key->can_authenticate? "a":"");
-      printf ("flags   :%s%s%s%s%s%s\n",
+      printf ("flags   :%s%s%s%s%s%s%s\n",
               key->secret? " secret":"",
               key->revoked? " revoked":"",
               key->expired? " expired":"",
               key->disabled? " disabled":"",
               key->invalid? " invalid":"",
-              key->is_qualified? " qualifid":"");
+              key->is_qualified? " qualifid":"",
+              key->subkeys && key->subkeys->is_cardkey? " cardkey":"");
+
+      subkey = key->subkeys;
+      if (subkey)
+        subkey = subkey->next;
+      for (nsub=1; subkey; subkey = subkey->next, nsub++)
+        {
+          printf ("fpr   %2d: %s\n", nsub, nonnull (subkey->fpr));
+          if (subkey->keygrip)
+            printf ("grip  %2d: %s\n", nsub, subkey->keygrip);
+          if (subkey->curve)
+            printf ("curve %2d: %s\n", nsub, subkey->curve);
+          printf ("caps  %2d: %s%s%s%s\n",
+                  nsub,
+                  subkey->can_encrypt? "e":"",
+                  subkey->can_sign? "s":"",
+                  subkey->can_certify? "c":"",
+                  subkey->can_authenticate? "a":"");
+          printf ("flags %2d:%s%s%s%s%s%s%s\n",
+                  nsub,
+                  subkey->secret? " secret":"",
+                  subkey->revoked? " revoked":"",
+                  subkey->expired? " expired":"",
+                  subkey->disabled? " disabled":"",
+                  subkey->invalid? " invalid":"",
+                  subkey->is_qualified? " qualifid":"",
+                  subkey->is_cardkey? " cardkey":"");
+        }
       for (nuids=0, uid=key->uids; uid; uid = uid->next, nuids++)
         {
           printf ("userid %d: %s\n", nuids, nonnull(uid->uid));
@@ -201,6 +234,8 @@ main (int argc, char **argv)
                   uid->validity == GPGME_VALIDITY_ULTIMATE? "ultimate": "[?]");
         }
 
+
+
       putchar ('\n');
 
       if (import)