gpg: Add dedicated error code for PGP-2 keys.

* g10/parse-packet.c (parse_key): Return GPG_ERR_LEGACY_KEY for PGP2
keys.
* g10/import.c (read_block): Simplify by checking GPG_ERR_LEGACY_KEY.
* g10/getkey.c (lookup): Silence error message for PGP-2 keys.

* common/util.h (GPG_ERR_LEGACY_KEY): Add replacement for older
libgpg-error.

Signed-off-by: Werner Koch <[email protected]>

5 files changed, 7 insertions, 11 deletions

diff --git a/common/util.h b/common/util.h
index 94878bc36..24107f533 100644
--- a/common/util.h
+++ b/common/util.h
@@ -38,6 +38,7 @@
 /* These error codes are used but not defined in the required
    libgpg-error version.  Define them here. */
 #if GPG_ERROR_VERSION_NUMBER < 0x011200  /* 1.18 */
+# define GPG_ERR_LEGACY_KEY     222
 # define GPG_ERR_OBJ_TERM_STATE 225
 # define GPG_ERR_FORBIDDEN      251
 #endif
diff --git a/g10/getkey.c b/g10/getkey.c
index d240dd7d1..62d2d3306 100644
--- a/g10/getkey.c
+++ b/g10/getkey.c
@@ -403,8 +403,6 @@ get_pubkey (PKT_public_key * pk, u32 * keyid)
   if (!rc)
     goto leave;
 
-  log_debug ("looking up key %08X%08X failed: %s\n", keyid[0], keyid[1],
-             gpg_strerror (rc));
   rc = GPG_ERR_NO_PUBKEY;
 
 leave:
@@ -2573,7 +2571,8 @@ lookup (getkey_ctx_t ctx, kbnode_t *ret_keyblock, int want_secret)
     }
 
 found:
-  if (rc && gpg_err_code (rc) != GPG_ERR_NOT_FOUND)
+  if (rc && gpg_err_code (rc) != GPG_ERR_NOT_FOUND
+      && gpg_err_code (rc) != GPG_ERR_LEGACY_KEY)
     log_error ("keydb_search failed: %s\n", gpg_strerror (rc));
 
   if (!rc)
diff --git a/g10/import.c b/g10/import.c
index 56121dbb1..de2252069 100644
--- a/g10/import.c
+++ b/g10/import.c
@@ -544,11 +544,9 @@ read_block( IOBUF a, PACKET **pending_pkt, kbnode_t *ret_root, int *r_v3keys)
   in_v3key = 0;
   while ((rc=parse_packet(a, pkt)) != -1)
     {
-      if (rc && (gpg_err_code (rc) == GPG_ERR_INV_PACKET
+      if (rc && (gpg_err_code (rc) == GPG_ERR_LEGACY_KEY
                  && (pkt->pkttype == PKT_PUBLIC_KEY
-                     || pkt->pkttype == PKT_SECRET_KEY)
-                 && (pkt->pkt.public_key->version == 2
-                     || pkt->pkt.public_key->version == 3)))
+                     || pkt->pkttype == PKT_SECRET_KEY)))
         {
           in_v3key = 1;
           ++*r_v3keys;
diff --git a/g10/keyring.c b/g10/keyring.c
index 7ac3478ad..34829e711 100644
--- a/g10/keyring.c
+++ b/g10/keyring.c
@@ -350,7 +350,7 @@ keyring_lock (KEYRING_HANDLE hd, int yes)
 
 
 /*
- * Return the last found keyring.  Caller must free it.
+ * Return the last found keyblock.  Caller must free it.
  * The returned keyblock has the kbode flag bit 0 set for the node with
  * the public key used to locate the keyblock or flag bit 1 set for
  * the user ID node.
@@ -1409,8 +1409,6 @@ keyring_rebuild_cache (void *token,int noisy)
           goto leave;
         }
 
-      log_debug ("keblock with version %d\n",
-                 keyblock->pkt->pkt.public_key->version);
       if (keyblock->pkt->pkt.public_key->version < 4)
         {
           /* We do not copy/cache v3 keys or any other unknown
diff --git a/g10/parse-packet.c b/g10/parse-packet.c
index ae215c413..73c4434c1 100644
--- a/g10/parse-packet.c
+++ b/g10/parse-packet.c
@@ -1963,7 +1963,7 @@ parse_key (IOBUF inp, int pkttype, unsigned long pktlen,
       if (list_mode)
         es_fprintf (listfp, ":key packet: [obsolete version %d]\n", version);
       pk->version = version;
-      err = gpg_error (GPG_ERR_INV_PACKET);
+      err = gpg_error (GPG_ERR_LEGACY_KEY);
       goto leave;
     }
   else