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-rwxr-xr-xexamples/printing/smbprint30
1 files changed, 28 insertions, 2 deletions
diff --git a/examples/printing/smbprint b/examples/printing/smbprint
index 61ee41f444..e2bbdc2f16 100755
--- a/examples/printing/smbprint
+++ b/examples/printing/smbprint
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
# This script is an input filter for printcap printing on a unix machine. It
# uses the smbclient program to print the file to the specified smb-based
@@ -102,7 +102,33 @@ if [ $TRANS -eq 1 ]; then
command="translate;$command";
fi
-debugfile="/tmp/smb-print.log"
+##
+## Some security checks on the logfile if we are using it
+##
+## make the directory containing the logfile is necessary
+## and set the permissions to be rwx for owner only
+##
+
+debugfile="/tmp/smb-print/logfile"
+logdir=`dirname $debugfile`
+if [ ! -d $logdir ]; then
+ mkdir -m 0700 $logdir
+fi
+
+##
+## check ownership. If I don't own it refuse to
+## create the logfile
+##
+if [ ! -O $logdir ]; then
+ echo "user running script does not own $logdir. Ignoring any debug options."
+ debug=""
+fi
+
+##
+## We should be safe at this point to create the log file
+## without fear of a symlink attack -- move on to more script work.
+##
+
if [ "x$debug" = "x" ] ; then
debugfile=/dev/null debugargs=
else