From 08109790e65ce2813b2c3b7700380069471ecd05 Mon Sep 17 00:00:00 2001
From: Sebastian <379651+czarly@users.noreply.github.com>
Date: Mon, 18 Mar 2024 04:20:42 +0100
Subject: [PATCH] init

---
 sync-status.sh | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100755 sync-status.sh

diff --git a/sync-status.sh b/sync-status.sh
new file mode 100755
index 00000000..492e178e
--- /dev/null
+++ b/sync-status.sh
@@ -0,0 +1,87 @@
+#!/bin/bash
+
+BASEPATH=/root/rpc
+source $BASEPATH/.env
+blacklist=("lighthouse" "prism" "beacon" "nimbus" "ws" "arbitrum-classic" "hagall" "public")
+pathlist=$(cat $BASEPATH/$1 | grep -oP "(?<=stripprefix\.prefixes).*\"" | cut -d'=' -f2- | sed 's/.$//')
+
+for path in $pathlist; do
+    include=true
+    for word in "${blacklist[@]}"; do
+	if echo "$path" | grep -qE "$word"; then
+	    include=false
+	fi
+    done
+		
+    if $include; then
+	RPC_URL="https://$DOMAIN$path"
+	response_file=$(mktemp)
+
+	http_status_code=$(curl --ipv4 -m 1 -s -X POST -w "%{http_code}" -o "$response_file" -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["latest", false],"id":1}' $RPC_URL)
+
+	if [ $? -eq 0 ]; then
+
+	    if [[ $http_status_code -eq 200 ]]; then
+    		response=$(cat "$response_file")
+                latest_block_timestamp=$(echo "$response" | jq -r '.result.timestamp')
+                latest_block_timestamp_decimal=$((16#${latest_block_timestamp#0x}))
+                current_time=$(date +%s)
+                time_difference=$((current_time - latest_block_timestamp_decimal))
+
+                if [ $time_difference -lt 60 ]; then
+		    if [ -n "$2" ]; then
+			echo "do a quick fitness test"
+			# use the proxy to normalize responses from different implementations of eth endpoints.
+			# make the proxy exit on a mismatch
+			# push a few seconds of ethspam | versus through the proxy to give it a chance to hit a mismatch
+
+			latest_block_number=$(echo "$response" | jq -r '.result.number')
+			latest_block_hash=$(echo "$response" | jq -r '.result.hash')			
+			response_file2=$(mktemp)
+			
+			http_status_code2=$(curl --ipv4 -m 1 -s -X POST -w "%{http_code}" -o "$response_file" -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["$latest_block_number", false],"id":1}' $2)
+			if [ $? -eq 0 ]; then
+			    if [[ $http_status_code2 -eq 200 ]]; then
+				response2=$(cat "$response_file2")
+				latest_block_hash2=$(echo "$response2" | jq -r '.result.hash')
+
+				if [ "$latest_block_hash" == "$latest_block_hash22" ]; then
+				    echo "online"
+				    exit 0
+				else
+				    echo "forked"
+				    exit 1
+				fi
+			    fi			    
+			fi
+
+			rm "$response_file2"
+			echo "unverified"
+			exit 1			   
+		    fi
+
+		    echo "online"
+		    exit 0
+		fi		
+	    elif [[ $http_status_code -eq 404 ]]; then
+    		echo "offline"
+		exit 1
+	    elif [[ $http_status_code -eq 401 ]]; then
+		echo "unauthorized"
+		exit 1
+	    elif [[ $http_status_code -eq 500 ]]; then
+		echo "error"
+		exit 1	
+	    else
+		echo "Unexpected HTTP status code: $http_status_code"
+		exit 1
+	    fi
+        else
+            echo "timeout"
+	    exit 1	    
+        fi
+	
+ 	rm "$response_file"
+	break
+    fi
+done