common: extend API of openpgp_oid_to_curve for canonical name.

* common/openpgp-oid.c (openpgp_oid_to_curve): Add CANON argument.
* common/util.h: Update.
* g10/import.c (transfer_secret_keys): Follow the change.
* g10/keyid.c (pubkey_string): Likewise.
* g10/keylist.c (list_keyblock_print, list_keyblock_colon): Likewise.
* parse-packet.c (parse_key): Likewise.
* scd/app-openpgp.c (send_key_attr, get_public_key): Likewise.

--

Change the function so that caller can select canonical name of curve
or name for printing.  Suggested by wk.

common/openpgp-oid.c

@@ -333,10 +333,10 @@ openpgp_curve_to_oid (const char *name, unsigned int *r_nbits)
 
 
 /* Map an OpenPGP OID to the Libgcrypt curve NAME.  Returns NULL for
-   unknown curve names.  We prefer an alias name here which is more
+   unknown curve names.  Unless CANON is set we prefer an alias name
-   suitable for printing.  */
+   here which is more suitable for printing.  */
 const char *
-openpgp_oid_to_curve (const char *oidstr)
+openpgp_oid_to_curve (const char *oidstr, int canon)
 {
   int i;
 
@@ -345,7 +345,7 @@ openpgp_oid_to_curve (const char *oidstr)
 
   for (i=0; oidtable[i].name; i++)
     if (!strcmp (oidtable[i].oidstr, oidstr))
-      return oidtable[i].alias? oidtable[i].alias : oidtable[i].name;
+      return !canon && oidtable[i].alias? oidtable[i].alias : oidtable[i].name;
 
   return NULL;
 }

common/util.h

@@ -323,7 +323,7 @@ gpg_error_t openpgp_oid_from_str (const char *string, gcry_mpi_t *r_mpi);
 char *openpgp_oid_to_str (gcry_mpi_t a);
 int openpgp_oid_is_ed25519 (gcry_mpi_t a);
 const char *openpgp_curve_to_oid (const char *name, unsigned int *r_nbits);
-const char *openpgp_oid_to_curve (const char *oid);
+const char *openpgp_oid_to_curve (const char *oid, int canon);
 const char *openpgp_enum_curves (int *idxp);
 
 

g10/import.c

@@ -1414,7 +1414,7 @@ transfer_secret_keys (ctrl_t ctrl, struct stats_s *stats, kbnode_t sec_keyblock,
             err = gpg_error_from_syserror ();
           else
             {
-              const char *curvename = openpgp_oid_to_curve (curvestr);
+              const char *curvename = openpgp_oid_to_curve (curvestr, 1);
               err = gcry_sexp_build (&curve, NULL, "(curve %s)",
                                      curvename?curvename:curvestr);
               xfree (curvestr);

g10/keyid.c

@@ -119,7 +119,7 @@ pubkey_string (PKT_public_key *pk, char *buffer, size_t bufsize)
   else if (prefix)
     {
       char *curve = openpgp_oid_to_str (pk->pkey[0]);
-      const char *name = openpgp_oid_to_curve (curve);
+      const char *name = openpgp_oid_to_curve (curve, 0);
 
       if (name)
         snprintf (buffer, bufsize, "%s", name);

g10/keylist.c

@@ -1091,7 +1091,7 @@ list_keyblock_print (KBNODE keyblock, int secret, int fpr,
               || pk2->pubkey_algo == PUBKEY_ALGO_ECDH)
             {
               char *curve = openpgp_oid_to_str (pk2->pkey[0]);
-              const char *name = openpgp_oid_to_curve (curve);
+              const char *name = openpgp_oid_to_curve (curve, 0);
               if (!name)
                 name = curve;
               es_fprintf (es_stdout, " %s", name);
@@ -1358,7 +1358,7 @@ list_keyblock_colon (KBNODE keyblock, int secret, int has_secret, int fpr)
       || pk->pubkey_algo == PUBKEY_ALGO_ECDH)
     {
       char *curve = openpgp_oid_to_str (pk->pkey[0]);
-      const char *name = openpgp_oid_to_curve (curve);
+      const char *name = openpgp_oid_to_curve (curve, 0);
       if (!name)
         name = curve;
       es_fputs (name, es_stdout);
@@ -1487,7 +1487,7 @@ list_keyblock_colon (KBNODE keyblock, int secret, int has_secret, int fpr)
               || pk->pubkey_algo == PUBKEY_ALGO_ECDH)
             {
               char *curve = openpgp_oid_to_str (pk->pkey[0]);
-              const char *name = openpgp_oid_to_curve (curve);
+              const char *name = openpgp_oid_to_curve (curve, 0);
               if (!name)
                 name = curve;
               es_fputs (name, es_stdout);

g10/parse-packet.c

@@ -2086,7 +2086,7 @@ parse_key (IOBUF inp, int pkttype, unsigned long pktlen,
                    || algorithm == PUBKEY_ALGO_ECDH) && i==0)
                 {
                   char *curve = openpgp_oid_to_str (pk->pkey[0]);
-                  const char *name = openpgp_oid_to_curve (curve);
+                  const char *name = openpgp_oid_to_curve (curve, 0);
                   es_fprintf (listfp, " %s (%s)", name?name:"", curve);
                   xfree (curve);
                 }

scd/app-openpgp.c

@@ -911,7 +911,7 @@ send_key_attr (ctrl_t ctrl, app_t app, const char *keyword, int keyno)
                 keyno+1,
                 app->app_local->keyattr[keyno].ecc.flags? PUBKEY_ALGO_EDDSA:
                 (keyno==1? PUBKEY_ALGO_ECDH: PUBKEY_ALGO_ECDSA),
-                openpgp_oid_to_curve (app->app_local->keyattr[keyno].ecc.oid));
+                openpgp_oid_to_curve (app->app_local->keyattr[keyno].ecc.oid, 0));
     }
   else
     snprintf (buffer, sizeof buffer, "%d 0 0 UNKNOWN", keyno+1);
@@ -1442,7 +1442,7 @@ get_public_key (app_t app, int keyno)
         format = "(public-key(ecc(curve%s)(flags eddsa)(q%b)))";
 
       err = gcry_sexp_build (&s_pkey, NULL, format,
-                 openpgp_oid_to_curve (app->app_local->keyattr[keyno].ecc.oid),
+                openpgp_oid_to_curve (app->app_local->keyattr[keyno].ecc.oid, 1),
                              (int)mlen, mbuf);
       if (err)
         goto leave;