From d524f9f9089b71d83e991ed42d25a4616ec575a2 Mon Sep 17 00:00:00 2001
From: David Rheinsberg <david.rheinsberg@gmail.com>
Date: Thu, 14 Mar 2019 13:26:50 +0100
Subject: [PATCH] sd-bus: avoid magic number in SASL length calculation

Lets avoid magic numbers and use a constant `strlen()` instead.

Signed-off-by: David Rheinsberg <david.rheinsberg@gmail.com>
(cherry picked from commit 3cacdab925c40a5d9b7cf3f67719201bbaa17f67)

Related: #1838081
---
 src/libsystemd/sd-bus/bus-socket.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/libsystemd/sd-bus/bus-socket.c b/src/libsystemd/sd-bus/bus-socket.c
index 4a72795d2b..1c8b331b48 100644
--- a/src/libsystemd/sd-bus/bus-socket.c
+++ b/src/libsystemd/sd-bus/bus-socket.c
@@ -390,7 +390,9 @@ static int bus_socket_auth_verify_server(sd_bus *b) {
 
                 if (line_begins(line, l, "AUTH ANONYMOUS")) {
 
-                        r = verify_anonymous_token(b, line + 14, l - 14);
+                        r = verify_anonymous_token(b,
+                                                   line + strlen("AUTH ANONYMOUS"),
+                                                   l - strlen("AUTH ANONYMOUS"));
                         if (r < 0)
                                 return r;
                         if (r == 0)
@@ -402,7 +404,9 @@ static int bus_socket_auth_verify_server(sd_bus *b) {
 
                 } else if (line_begins(line, l, "AUTH EXTERNAL")) {
 
-                        r = verify_external_token(b, line + 13, l - 13);
+                        r = verify_external_token(b,
+                                                  line + strlen("AUTH EXTERNAL"),
+                                                  l - strlen("AUTH EXTERNAL"));
                         if (r < 0)
                                 return r;
                         if (r == 0)