Last active
October 7, 2018 00:09
-
-
Save ryan-wendel/3f5699618aefc02c7c5a9e8f8c3343d0 to your computer and use it in GitHub Desktop.
Grabs list of popular domains and aggregates disallowed path data from the top N domains' robots.txt files.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/bin/bash | |
TOP_N="5000" | |
SKIP_DOWNLOAD=0 | |
BASE="/usr/local/tools/web/robots" | |
URL_BASE="http://s3-us-west-1.amazonaws.com/umbrella-static" | |
print_help() { | |
echo "Usage: $(basename $0) -n <integer> [-s]" | |
echo -e "\t-n: Number of top sites to poll" | |
echo -e "\t-s: Skip the initial download" | |
echo -e "\t-h: Display help" | |
} | |
while getopts ":n:sh" OPT; do | |
case ${OPT} in | |
n) TOP_N=${OPTARG};; | |
s) SKIP_DOWNLOAD=1;; | |
h) print_help; exit 1;; | |
\?) print_help; exit 1;; | |
:) print_help; exit 1;; | |
esac | |
done | |
if [[ ${OPTIND} -gt 4 ]]; then | |
print_help | |
exit 1 | |
fi | |
function getRobots() { | |
TARGET=$1 | |
RETVAL="99" | |
UP_443=$(nmap -Pn -sT --open -p 443 --host-timeout=3 ${TARGET} | grep -c "^443/") | |
if [[ $UP_443 -ge 1 ]]; then | |
wget --tries=2 --timeout=5 -q -O ${BASE}/data/${TARGET}_robots.txt "https://${TARGET}/robots.txt" | |
RETVAL=$? | |
dos2unix ${BASE}/data/${TARGET}_robots.txt >/dev/null 2>&1 | |
else | |
UP_80=$(nmap -Pn -sT --open -p 80 --host-timeout=3 ${TARGET} | grep -c "^80/") | |
if [[ $UP_80 -ge 1 ]]; then | |
wget --tries=2 --timeout=5 -q -O ${BASE}/data/${TARGET}_robots.txt "http://${TARGET}/robots.txt" | |
RETVAL=$? | |
dos2unix ${BASE}/data/${TARGET}_robots.txt >/dev/null 2>&1 | |
fi | |
fi | |
if [[ $RETVAL -eq 99 ]]; then | |
echo "Error: No web services responding on $TARGET" | |
elif [[ $RETVAL -gt 0 ]]; then | |
echo "Error: Problem with download on $TARGET" | |
else | |
echo "Success: robots.txt downloaded from $TARGET" | |
fi | |
} | |
shift $((OPTIND -1)) | |
if [[ $SKIP_DOWNLOAD -eq 0 ]]; then | |
# look for the newest file going back 20 days | |
for i in {0..20}; do | |
DATE=$(date -d "${i} days ago" +%Y-%m-%d) | |
URL=${URL_BASE}/top-1m-${DATE}.csv.zip | |
STATUS=$(curl -s -k -w "%{http_code}" --head ${URL} | tail -1) | |
# look for 200 status and download | |
if [[ $STATUS -eq 200 ]]; then | |
wget -q -O ${BASE}/top-1m-${DATE}.csv.zip ${URL} | |
OUTPUT_FILE="${BASE}/robots-dirs-${DATE}.txt" | |
break | |
fi | |
# if we made it to 20 we didn't download | |
if [[ ${i} -eq 20 ]]; then | |
echo "Error: No file was downloaded" | |
exit 1 | |
fi | |
done | |
unzip -o ${BASE}/top-1m-${DATE}.csv.zip | |
else | |
DATE=$(date +%Y-%m-%d) | |
OUTPUT_FILE="${BASE}/robots-dirs-${DATE}.txt" | |
fi | |
if [ -e "${BASE}/top-1m.csv" ]; then | |
mkdir ${BASE}/data >/dev/null 2>&1 | |
rm -f ${BASE}/data/*_robots.txt >/dev/null 2>&1 | |
head -${TOP_N} ${BASE}/top-1m.csv | cut -d ',' -f2 | dos2unix | while read DOMAIN; do | |
TARGET="" | |
ADDRESSES=$(host $DOMAIN | grep -c 'has address') | |
if [[ ${ADDRESSES} -gt 0 ]]; then | |
TARGET=${DOMAIN} | |
else | |
ADDRESSES=$(host "www.${DOMAIN}" | grep -c 'has address') | |
if [[ ${ADDRESSES} -gt 0 ]]; then | |
TARGET="www.${DOMAIN}" | |
fi | |
fi | |
if [ ! -z "${TARGET}" ]; then | |
getRobots $TARGET | |
else | |
echo "Error: ${DOMAIN} and www.${DOMAIN} not resolving to an IP" | |
fi | |
done | |
grep -hi '^disallow' ${BASE}/data/*_robots.txt | \ | |
sed -e 's/[Dd]isallow.*\//\//g' -e 's/\?.*//g' -e 's/\*.*//g' | \ | |
sort -u > $OUTPUT_FILE | |
fi |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment