Add burp wrapper function with downloader.

dotfiles/zshrc.d/burp.zsh

@@ -0,0 +1,29 @@
+burp() {
+  setopt localoptions nullglob
+  local NO_DOWNLOAD
+  local JAR
+  if (( ${+argv[(r)*no-download]} )) ; then
+    NO_DOWNLOAD=1
+    shift
+  else
+    NO_DOWNLOAD=0
+  fi
+  JAR=(${HOME}/bin/burpsuite*jar(On[1])) 2>/dev/null
+  if [ -z $JAR ] ; then
+    if (( $NO_DOWNLOAD )) ; then
+      echo "Not downloading, --no-download specified" >&2
+      return 1
+    fi
+    echo "Burp JAR not found in ${HOME}/bin.  Attempting to download free edition." >&2
+    wget -q --content-disposition --no-server-response -P ${HOME}/bin \
+      https://portswigger.net/DownloadUpdate.ashx\?Product\=Free
+    if [ $? -ne 0 ] ; then
+      echo "Download failed." >&2
+      return 1
+    fi
+    burp --no-download "$@"
+    return $?
+  else
+    java -jar ${JAR} "$@"
+  fi
+}