From f9fe15e6a2ea74e523e51e9542df1bf00b23ce7c Mon Sep 17 00:00:00 2001
From: KatolaZ <katolaz@freaknet.org>
Date: Tue, 28 Aug 2018 12:10:22 +0100
Subject: avoid self-loops and cgi traps

---
 burrow | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/burrow b/burrow
index 9335ba8..87b4e79 100755
--- a/burrow
+++ b/burrow
@@ -22,14 +22,26 @@
 ### 
 ## function
 get_dirs(){
-	src_id="$1"
+	src_type=$(echo "$1" | cut -d "|" -f 1)
+	src_sel=$(echo "$1" | cut -d "|" -f 2 | cut -d "?" -f 1)
+	src_host=$(echo "$1" | cut -d "|" -f 3)
+	src_port=$(echo "$1" | cut -d "|" -f 4)
+	src_id=$(echo "$1" | cut -d "|" -f 5)
+	##echo "src_sel: \"${src_sel}\"" >&2
 	OLDIFS=$IFS
 	#IFS=$'\t\n'
 	IFS="|"
 	src_dir=$(echo "${src_id}" | cut -c -2)
 	touch "${src_dir}/${src_id}"
 	while read name sel host port; do
+		##echo "sel: \"$sel\"" >&2
+		[ "$sel" = "Err" -o -z "$sel" ] && continue
 		TYPE=$(echo "$name" | cut -c 1)
+		[ "$TYPE" = "i" ] && continue
+		dst_sel=$(echo "$sel" | cut -d "?" -f 1)
+		##echo "dst_sel: \"${dst_sel}\"" >&2 
+		[ "${dst_sel}" = "${src_sel}" -a "${src_type}" = "$TYPE" \
+		    -a "${src_host}" = "$host"  -a "${src_port}" = "$port" ] && continue;
 		port=$(echo $port | sed -r -e 's/\r//g')
 		dir_id=$(echo "${TYPE}|${sel}|${host}|${port}" | sed 's/^1||/1|\/|/g')
 		dest_id=$(echo "${dir_id}" | sha256sum | cut -d " " -f 1 )
@@ -91,6 +103,6 @@ echo "selector ${src_id} not found" >> logfile.txt
 MYNAME=$(basename $0)
 
 if [ -z "${MYNAME##burrow}" ]; then  
-	retrieve_selector "$SRC" | sed -r -e 's/\t/|/g' | get_dirs "${src_id}"
+	retrieve_selector "$SRC" | sed -r -e 's/\t/|/g' | get_dirs "$SRC"
 fi
  
-- 
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