From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <f.weber@proxmox.com>
Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68])
 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
 key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256)
 (No client certificate requested)
 by lists.proxmox.com (Postfix) with ESMTPS id CB21690705
 for <pve-devel@lists.proxmox.com>; Wed, 24 Jan 2024 12:39:31 +0100 (CET)
Received: from firstgate.proxmox.com (localhost [127.0.0.1])
 by firstgate.proxmox.com (Proxmox) with ESMTP id ABA82AA4C
 for <pve-devel@lists.proxmox.com>; Wed, 24 Jan 2024 12:39:01 +0100 (CET)
Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com
 [94.136.29.106])
 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
 key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256)
 (No client certificate requested)
 by firstgate.proxmox.com (Proxmox) with ESMTPS
 for <pve-devel@lists.proxmox.com>; Wed, 24 Jan 2024 12:39:00 +0100 (CET)
Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1])
 by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 7498349262
 for <pve-devel@lists.proxmox.com>; Wed, 24 Jan 2024 12:39:00 +0100 (CET)
From: Friedrich Weber <f.weber@proxmox.com>
To: pve-devel@lists.proxmox.com
Date: Wed, 24 Jan 2024 12:38:56 +0100
Message-Id: <20240124113856.126256-1-f.weber@proxmox.com>
X-Mailer: git-send-email 2.39.2
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
X-SPAM-LEVEL: Spam detection results:  0
 AWL -0.096 Adjusted score from AWL reputation of From: address
 BAYES_00                 -1.9 Bayes spam probability is 0 to 1%
 DMARC_MISSING             0.1 Missing DMARC policy
 KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment
 SPF_HELO_NONE           0.001 SPF: HELO does not publish an SPF Record
 SPF_PASS               -0.001 SPF: sender matches SPF record
 T_SCC_BODY_TEXT_LINE    -0.01 -
Subject: [pve-devel] [PATCH http-server] access control: avoid
 "uninitialized value" warning if using IP ranges
X-BeenThere: pve-devel@lists.proxmox.com
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Proxmox VE development discussion <pve-devel.lists.proxmox.com>
List-Unsubscribe: <https://lists.proxmox.com/cgi-bin/mailman/options/pve-devel>, 
 <mailto:pve-devel-request@lists.proxmox.com?subject=unsubscribe>
List-Archive: <http://lists.proxmox.com/pipermail/pve-devel/>
List-Post: <mailto:pve-devel@lists.proxmox.com>
List-Help: <mailto:pve-devel-request@lists.proxmox.com?subject=help>
List-Subscribe: <https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel>, 
 <mailto:pve-devel-request@lists.proxmox.com?subject=subscribe>
X-List-Received-Date: Wed, 24 Jan 2024 11:39:31 -0000

ALLOW_FROM/DENY_FROM accept any syntax understood by Net::IP. However,
if an IP range like "10.1.1.1-10.1.1.3" is configured, a confusing
Perl warning is printed to the syslog on a match:

  Use of uninitialized value in concatenation (.) or string at [...]

The reason is that we use Net::IP::prefix to prepare a debug message,
but this returns undef if a range was specified. To avoid the warning,
use Net::IP::print to obtain a string representation instead.

Signed-off-by: Friedrich Weber <f.weber@proxmox.com>
---
 src/PVE/APIServer/AnyEvent.pm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/PVE/APIServer/AnyEvent.pm b/src/PVE/APIServer/AnyEvent.pm
index cebd9ba..b60b825 100644
--- a/src/PVE/APIServer/AnyEvent.pm
+++ b/src/PVE/APIServer/AnyEvent.pm
@@ -1761,7 +1761,7 @@ sub check_host_access {
 	foreach my $t (@{$self->{allow_from}}) {
 	    if ($t->overlaps($cip)) {
 		$match_allow = 1;
-		$self->dprint("client IP allowed: ". $t->prefix());
+		$self->dprint("client IP allowed: ". $t->print());
 		last;
 	    }
 	}
@@ -1770,7 +1770,7 @@ sub check_host_access {
     if ($self->{deny_from}) {
 	foreach my $t (@{$self->{deny_from}}) {
 	    if ($t->overlaps($cip)) {
-		$self->dprint("client IP denied: ". $t->prefix());
+		$self->dprint("client IP denied: ". $t->print());
 		$match_deny = 1;
 		last;
 	    }
-- 
2.39.2