File gnupg-allow-import-of-previously-known-keys-eve... of Package gpg2

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File gnupg-allow-import-of-previously-known-keys-even-without-UIDs.patch of Package gpg2

From a1db83d8a3308277f01b96833c13693bd7e13ff9 Mon Sep 17 00:00:00 2001
From: Vincent Breitmoser <look@my.amazin.horse>
Date: Thu, 13 Jun 2019 21:27:42 +0200
Subject: [PATCH] gpg: allow import of previously known keys, even without UIDs

* g10/import.c (import_one): Accept an incoming OpenPGP certificate that
has no user id, as long as we already have a local variant of the cert
that matches the primary key.

This fixes two of the three broken tests in import-incomplete.scm.

GnuPG-Bug-id: 4393
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
---
 g10/import.c | 49 +++++++++++--------------------------------------
 1 file changed, 11 insertions(+), 38 deletions(-)

Index: gnupg-2.4.0/g10/import.c
===================================================================
--- gnupg-2.4.0.orig/g10/import.c
+++ gnupg-2.4.0/g10/import.c
@@ -1954,7 +1954,6 @@ import_one_real (ctrl_t ctrl,
   size_t an;
   char pkstrbuf[PUBKEY_STRING_SIZE];
   int merge_keys_done = 0;
-  int any_filter = 0;
   KEYDB_HANDLE hd = NULL;
 
   if (r_valid)
@@ -1991,14 +1990,6 @@ import_one_real (ctrl_t ctrl,
       log_printf ("\n");
     }
 
-
-  if (!uidnode)
-    {
-      if (!silent)
-        log_error( _("key %s: no user ID\n"), keystr_from_pk(pk));
-      return 0;
-    }
-
   if (screener && screener (keyblock, screener_arg))
     {
       log_error (_("key %s: %s\n"), keystr_from_pk (pk),
@@ -2078,18 +2069,10 @@ import_one_real (ctrl_t ctrl,
 	  }
     }
 
-  /* Delete invalid parts and bail out if there are no user ids left.  */
-  if (!delete_inv_parts (ctrl, keyblock, keyid, options, otherrevsigs))
-    {
-      if (!silent)
-        {
-          log_error ( _("key %s: no valid user IDs\n"), keystr_from_pk(pk));
-          if (!opt.quiet)
-            log_info(_("this may be caused by a missing self-signature\n"));
-        }
-      stats->no_user_id++;
-      return 0;
-    }
+  /* Delete invalid parts, and note if we have any valid ones left.
+   * We will later abort import if this key is new but contains
+   * no valid uids.  */
+  delete_inv_parts (ctrl, keyblock, keyid, options, otherrevsigs);
 
   /* Get rid of deleted nodes.  */
   commit_kbnode (&keyblock);
@@ -2099,24 +2082,11 @@ import_one_real (ctrl_t ctrl,
     {
       apply_keep_uid_filter (ctrl, keyblock, import_filter.keep_uid);
       commit_kbnode (&keyblock);
-      any_filter = 1;
     }
   if (import_filter.drop_sig)
     {
       apply_drop_sig_filter (ctrl, keyblock, import_filter.drop_sig);
       commit_kbnode (&keyblock);
-      any_filter = 1;
-    }
-
-  /* If we ran any filter we need to check that at least one user id
-   * is left in the keyring.  Note that we do not use log_error in
-   * this case. */
-  if (any_filter && !any_uid_left (keyblock))
-    {
-      if (!opt.quiet )
-        log_info ( _("key %s: no valid user IDs\n"), keystr_from_pk (pk));
-      stats->no_user_id++;
-      return 0;
     }
 
   /* The keyblock is valid and ready for real import.  */
@@ -2174,6 +2144,13 @@ import_one_real (ctrl_t ctrl,
       err = 0;
       stats->skipped_new_keys++;
     }
+  else if (err && !any_uid_left (keyblock))
+    {
+      if (!silent)
+        log_info( _("key %s: new key but contains no user ID - skipped\n"), keystr(keyid));
+      err = 0;
+      stats->no_user_id++;
+    }
   else if (err)  /* Insert this key. */
     {
       /* Note: ERR can only be NO_PUBKEY or UNUSABLE_PUBKEY.  */

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