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Use Cloudflare API instead of Website #10

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f60544a
Update README.md
jaapmarcus Mar 29, 2023
b246dc5
Update cloudflare-sync-ips.sh
jaapmarcus Mar 29, 2023
575c86c
Add download url
jaapmarcus Mar 29, 2023
baeb008
Update cloudflare-sync-ips.sh
jaapmarcus Mar 29, 2023
cc9b16e
Update cloudflare-sync-ips.sh
jaapmarcus Mar 29, 2023
db204c5
Update README.md
jaapmarcus Mar 29, 2023
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34 changes: 18 additions & 16 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,10 @@ This project aims to modify your nginx configuration to let you get the real ip

To provide the client (visitor) IP address for every request to the origin, Cloudflare adds the "CF-Connecting-IP" header. We will catch the header and get the real ip address of the visitor.

## Install

`apt-get install jq` or ` dnf install jq`

## Nginx Configuration
With a small configuration modification we can integrate replacing the real ip address of the visitor instead of getting CloudFlare's load balancers' ip addresses.

Expand All @@ -16,24 +20,22 @@ The bash script may run manually or can be scheduled to refresh the ip list of C
```sh
#!/bin/bash

CLOUDFLARE_FILE_PATH=/etc/nginx/cloudflare

echo "#Cloudflare" > $CLOUDFLARE_FILE_PATH;
echo "" >> $CLOUDFLARE_FILE_PATH;
cf_ips="$(curl -fsLm2 --retry 1 https://api.cloudflare.com/client/v4/ips)"
CLOUDFLARE_FILE_PATH=${1:-/etc/nginx/cloudflare}

echo "# - IPv4" >> $CLOUDFLARE_FILE_PATH;
for i in `curl -s -L https://www.cloudflare.com/ips-v4`; do
echo "set_real_ip_from $i;" >> $CLOUDFLARE_FILE_PATH;
echo "# Cloudflare IP Ranges" > $CLOUDFLARE_FILE_PATH
echo "" >> $CLOUDFLARE_FILE_PATH
echo "# - IPv4" >> $CLOUDFLARE_FILE_PATH
for ipv4 in $(echo "$cf_ips" | jq -r '.result.ipv4_cidrs[]//""' | sort); do
echo "set_real_ip_from $ipv4;" >> $CLOUDFLARE_FILE_PATH
done

echo "" >> $CLOUDFLARE_FILE_PATH;
echo "# - IPv6" >> $CLOUDFLARE_FILE_PATH;
for i in `curl -s -L https://www.cloudflare.com/ips-v6`; do
echo "set_real_ip_from $i;" >> $CLOUDFLARE_FILE_PATH;
done

echo "" >> $CLOUDFLARE_FILE_PATH;
echo "real_ip_header CF-Connecting-IP;" >> $CLOUDFLARE_FILE_PATH;
echo "" >> $CLOUDFLARE_FILE_PATH
echo "# - IPv6" >> $CLOUDFLARE_FILE_PATH
for ipv6 in $(echo "$cf_ips" | jq -r '.result.ipv6_cidrs[]//""' | sort); do
echo "set_real_ip_from $ipv6;" >> $CLOUDFLARE_FILE_PATH
done
echo "" >> $CLOUDFLARE_FILE_PATH
echo "real_ip_header CF-Connecting-IP;" >> $CLOUDFLARE_FILE_PATH

#test configuration and reload nginx
nginx -t && systemctl reload nginx
Expand Down
28 changes: 13 additions & 15 deletions cloudflare-sync-ips.sh
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@@ -1,23 +1,21 @@
#!/bin/bash

cf_ips="$(curl -fsLm2 --retry 1 https://api.cloudflare.com/client/v4/ips)"
CLOUDFLARE_FILE_PATH=${1:-/etc/nginx/cloudflare}

echo "#Cloudflare" > $CLOUDFLARE_FILE_PATH;
echo "" >> $CLOUDFLARE_FILE_PATH;

echo "# - IPv4" >> $CLOUDFLARE_FILE_PATH;
for i in `curl -s -L https://www.cloudflare.com/ips-v4`; do
echo "set_real_ip_from $i;" >> $CLOUDFLARE_FILE_PATH;
done

echo "" >> $CLOUDFLARE_FILE_PATH;
echo "# - IPv6" >> $CLOUDFLARE_FILE_PATH;
for i in `curl -s -L https://www.cloudflare.com/ips-v6`; do
echo "set_real_ip_from $i;" >> $CLOUDFLARE_FILE_PATH;
echo "# Cloudflare IP Ranges" > $CLOUDFLARE_FILE_PATH
echo "" >> $CLOUDFLARE_FILE_PATH
echo "# - IPv4" >> $CLOUDFLARE_FILE_PATH
for ipv4 in $(echo "$cf_ips" | jq -r '.result.ipv4_cidrs[]//""' | sort); do
echo "set_real_ip_from $ipv4;" >> $CLOUDFLARE_FILE_PATH
done

echo "" >> $CLOUDFLARE_FILE_PATH;
echo "real_ip_header CF-Connecting-IP;" >> $CLOUDFLARE_FILE_PATH;
echo "" >> $CLOUDFLARE_FILE_PATH
echo "# - IPv6" >> $CLOUDFLARE_FILE_PATH
for ipv6 in $(echo "$cf_ips" | jq -r '.result.ipv6_cidrs[]//""' | sort); do
echo "set_real_ip_from $ipv6;" >> $CLOUDFLARE_FILE_PATH
done
echo "" >> $CLOUDFLARE_FILE_PATH
echo "real_ip_header CF-Connecting-IP;" >> $CLOUDFLARE_FILE_PATH

#test configuration and reload nginx
nginx -t && systemctl reload nginx