From a427c3cd2776bc523bd40491a5d92d98d071ffea Mon Sep 17 00:00:00 2001
From: Demi Marie Obenour <athena@invisiblethingslab.com>
Date: Tue, 16 Mar 2021 11:41:16 +0200
Subject: [PATCH] Optimize signature header merge a bit

Look up possible offending tags from the main header first in a separate
loop, this avoids having to re-sort after each headerPut() operation
---
 lib/package.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/package.c b/lib/package.c
index 6f10bb9..355c3e7 100644
--- a/lib/package.c
+++ b/lib/package.c
@@ -64,10 +64,14 @@ rpmTagVal headerMergeLegacySigs(Header h, Header sigh, char **msg)
 {
     const struct taglate_s *xl;	
     struct rpmtd_s td;
-    rpmtdReset(&td);
     for (xl = xlateTags; xl->stag; xl++) {
 	/* There mustn't be one in the main header */
 	if (headerIsEntry(h, xl->xtag))
+		goto exit;
+    }
+
+    rpmtdReset(&td);
+    for (xl = xlateTags; xl->stag; xl++) {
 		if (headerGet(sigh, xl->stag, &td, HEADERGET_RAW|HEADERGET_MINMEM)) {
 	    /* Translate legacy tags */
 	    if (xl->stag != xl->xtag)
@@ -86,6 +90,7 @@ rpmTagVal headerMergeLegacySigs(Header h, Header sigh, char **msg)
     }
     rpmtdFreeData(&td);
 
+exit:
     if (xl->stag) {
 	rasprintf(msg, "invalid signature tag %s (%d)",
 			rpmTagGetName(xl->xtag), xl->xtag);
-- 
2.27.0