Disallow invalid char's in the filename passed to idl2wrs. Fixes bug 1129.

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@35944 f5534014-38df-0310-8fa8-9805f1628bb7

1 files changed, 19 insertions, 0 deletions

diff --git a/tools/idl2wrs.sh.in b/tools/idl2wrs.sh.in
index 9fa33ba0be..ec3a4cfa4c 100644
--- a/tools/idl2wrs.sh.in
+++ b/tools/idl2wrs.sh.in
@@ -48,6 +48,25 @@ if [ $# -lt 1 ]; then
     exit 1;
 fi
 
+# Check the file name for valid characters.
+# Implementation based on Dave Taylor's validalnum shell script from his book,
+# "Wicked Cool Shell Scripts", as well as Mark Rushakoff's answer he provided
+# to the question posted at stackoverflow.com entitled, "How can I use the
+# UNIX shell to count the number of times a letter appears in a text file?"
+file=$(basename $1)
+compressed="$(echo $file | sed 's/[^[:alnum:]._]//g')"
+if [ "$compressed" != "$file" ]; then
+    echo "idl2wrs Error: Invalid file name: $file"
+    exit 1;
+fi
+
+# Only allow one '.' at most.
+count=$(echo $compressed | awk -F. '{c += NF - 1} END {print c}')
+if [ $count -gt 1 ] ; then
+    echo "idl2wrs Error: Invalid file name: $file"
+    exit 1;
+fi
+
 #
 # Run wireshark backend, looking for wireshark_be.py and wireshark_gen.py
 # in pythons's "site-packages" directory. If cannot find that, then