Update signature summary for the case of missing X.509 keys.

* src/verify.c (gpgme_op_verify_result): Update summary field.
--

This is actually a hack to solve the problem that GPGME currently does
not emit ERRSIG for a missing public key.

NEWS

@@ -4,6 +4,10 @@ Noteworthy changes in version 1.3.2 (unreleased)
  * Remove support for libgpgme-pth.  As far as we know, this was never used,
    and GnuPG is going to use our own npth in the future.
 
+ * Fix signature summary information for a missing X.509 key.
+
+ * Fix parsing of dates >= year 2038.
+
 
 Noteworthy changes in version 1.3.1 (2011-06-16)
 ------------------------------------------------
@@ -120,7 +124,7 @@ Noteworthy changes in version 1.1.7 (2008-10-17)
  * Using GPGME_KEYLIST_MODE_LOCAL combined with
    GPGME_KEYLIST_MODE_EXTERN is now supported; it uses the
    --locate-keys feature of gpg (>= 2.0.10).
-   
+
  * The encoding of gpgme_data_t objects can affect the output encoding
    of export, sign and encrypt operations now (the same operations
    that are also affected by the ASCII mode switch).  We believe this
@@ -764,7 +768,7 @@ Noteworthy changes in version 0.4.1 (2003-06-06)
    So, instead:
 
    char *fpr;
-   err = gpgme_op_genkey (ctx, NULL, NULL, &fpr); 
+   err = gpgme_op_genkey (ctx, NULL, NULL, &fpr);
    if (!err && fpr)
      printf ("%s\n", fpr);
 
@@ -1052,7 +1056,7 @@ Noteworthy changes in version 0.3.13 (2002-11-20)
 Noteworthy changes in version 0.3.12 (2002-10-15)
 -------------------------------------------------
 
- * Fixed some bux with key listings.  
+ * Fixed some bux with key listings.
 
  * The development has been branched to clean up some API issues.
    This 0.3 series will be kept for compatibility reasons; so do don't
@@ -1060,7 +1064,7 @@ Noteworthy changes in version 0.3.12 (2002-10-15)
 
 Noteworthy changes in version 0.3.11 (2002-09-20)
 -------------------------------------------------
-        
+
  * Bug fixes.
 
 Noteworthy changes in version 0.3.10 (2002-09-02)
@@ -1266,7 +1270,7 @@ gpgme_register_idle             NEW
 
 Noteworthy changes in version 0.3.0 (2001-12-19)
 ------------------------------------------------
- 
+
  * New interface gpgme_set_protocol() to set the protocol and thus the
    crypto engine to be used by the context.  Currently, the OpenPGP
    and the CMS protocols are supported.  They are specified by the new
@@ -1336,7 +1340,7 @@ Noteworthy changes in version 0.2.3 (2001-09-17)
 
 Noteworthy changes in version 0.2.2 (2001-06-12)
 ------------------------------------------------
- 
+
  * Implemented a key cache.
 
  * Fixed a race condition under W32 and some other bug fixes.

src/verify.c

@@ -83,6 +83,7 @@ gpgme_op_verify_result (gpgme_ctx_t ctx)
   void *hook;
   op_data_t opd;
   gpgme_error_t err;
+  gpgme_signature_t sig;
 
   TRACE_BEG (DEBUG_CTX, "gpgme_op_verify_result", ctx);
   err = _gpgme_op_data_lookup (ctx, OPDATA_VERIFY, &hook, -1, NULL);
@@ -93,12 +94,37 @@ gpgme_op_verify_result (gpgme_ctx_t ctx)
       return NULL;
     }
 
+  /* It is possible that we saw a new signature only followed by an
+     ERROR line for that.  In particular a missing X.509 key triggers
+     this.  In this case it is surprising that the summary field has
+     not been updated.  We fix it here by explicitly looking for this
+     case.  The real fix would be to have GPGME emit ERRSIG.  */
+  for (sig = opd->result.signatures; sig; sig = sig->next)
+    {
+      if (!sig->summary)
+        {
+          switch (gpg_err_code (sig->status))
+            {
+            case GPG_ERR_KEY_EXPIRED:
+              sig->summary |= GPGME_SIGSUM_KEY_EXPIRED;
+              break;
+
+            case GPG_ERR_NO_PUBKEY:
+              sig->summary |= GPGME_SIGSUM_KEY_MISSING;
+              break;
+
+            default:
+              break;
+            }
+        }
+    }
+
+  /* Now for some tracing stuff. */
   if (_gpgme_debug_trace ())
     {
-      gpgme_signature_t sig = opd->result.signatures;
+      int i;
-      int i = 0;
 
-      while (sig)
+      for (sig = opd->result.signatures, i = 0; sig; sig = sig->next, i++)
 	{
 	  TRACE_LOG4 ("sig[%i] = fpr %s, summary 0x%x, status %s",
 		      i, sig->fpr, sig->summary, gpg_strerror (sig->status));
@@ -120,8 +146,6 @@ gpgme_op_verify_result (gpgme_ctx_t ctx)
 	    {
 	      TRACE_LOG1 ("sig[%i] = has notations (not shown)", i);
 	    }
-	  sig = sig->next;
-	  i++;
 	}
     }