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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| #!/bin/bash | ||
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| echoerr() { echo "ERROR: $@" 1>&2; } | ||
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| # Check if the script is running on macOS | ||
| if [[ "$(uname)" != "Darwin" ]]; then | ||
| echoerr "This script is intended to run on macOS only." | ||
| exit 1 | ||
| fi | ||
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| echo "This tool supports Docker Desktop versions >= 4.26" | ||
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| # Check if Docker Desktop is running | ||
| docker ps > /dev/null | ||
| if [ $? -ne 0 ]; then | ||
| echoerr "Error with finding local Docker. Make sure Docker cli and Docker Desktop are installed." | ||
| exit 1 | ||
| fi | ||
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| # Get IP of eth1 from BusyBox container with NET_ADMIN privileges | ||
| # Define the Docker command to get the IP address of eth1 | ||
| DOCKER_COMMAND="ip addr show eth1 | grep 'inet ' | awk '{print \$2}' | cut -d/ -f1" | ||
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| # Pull the BusyBox image if not already pulled | ||
| echo "Pulling BusyBox Docker image..." | ||
| docker pull busybox:latest | ||
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| # Run the BusyBox container with network privileges (NET_ADMIN) and execute the command | ||
| echo "Running BusyBox container with network privileges (NET_ADMIN) to get IP address of eth1..." | ||
| IP_ADDRESS=$(docker run --rm --network host --cap-add NET_ADMIN busybox:latest sh -c "$DOCKER_COMMAND") | ||
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| # Check if the IP address was successfully retrieved | ||
| if [ -n "$IP_ADDRESS" ]; then | ||
| echo "IP address of eth1: $IP_ADDRESS" | ||
| else | ||
| echoerr "Failed to retrieve IP address of eth1." | ||
| echoerr "Make sure kernelForUDP is set, it is needed for this to work." | ||
| echoerr "You can enable it manually from Docker Desktop GUI." | ||
| echoerr "This is done from Settings(top right)->Resources->Network." | ||
| echoerr "Enable 'Use kernel networking for UDP' in Docker Desktop." | ||
| exit 1 | ||
| fi | ||
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| # List Docker networks with 'bridge' driver and display their subnets | ||
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| echo "Listing Docker networks with 'bridge' driver and their subnets..." | ||
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| # Get a list of all Docker networks with the 'bridge' driver | ||
| NETWORKS=$(docker network ls --filter driver=bridge --format "{{.ID}}") | ||
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| # Iterate over each network and get its subnet | ||
| for NETWORK_ID in $NETWORKS; do | ||
| # Inspect the network and extract the subnet information | ||
| SUBNETS=$(docker network inspect --format '{{range .IPAM.Config}}{{.Subnet}}{{end}}' "$NETWORK_ID") | ||
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| # Get the network name for display purposes | ||
| NETWORK_NAME=$(docker network inspect --format '{{.Name}}' "$NETWORK_ID") | ||
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| # Display the network name and its subnets | ||
| if [ -n "$SUBNETS" ]; then | ||
| echo "Network: $NETWORK_NAME (ID: $NETWORK_ID)" | ||
| echo " Subnet(s): $SUBNETS" | ||
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| # Check and Add/Remove Routes on macOS | ||
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| for SUBNET in $SUBNETS; do | ||
| # Check if the route already exists | ||
| echo "Checking for local routes already setup..." | ||
| EXISTING_ROUTE=$(route -n get "$SUBNET" | grep destination: | grep -v default) | ||
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| if [ -n "$EXISTING_ROUTE" ]; then | ||
| ROUTE_INFO=$(route -n get "$SUBNET") | ||
| ROUTE_GATEWAY=$(echo "$ROUTE_INFO" | grep gateway: | awk '{print $2}') | ||
| ROUTE_INTERFACE=$(echo "$ROUTE_INFO" | grep interface: | awk '{print $2}') | ||
| echo "Route for subnet $SUBNET already exists:" | ||
| echo " subnet: $SUBNET gateway: $ROUTE_GATEWAY interface: $ROUTE_INTERFACE" | ||
| # Check if the route to Docker VM already exists | ||
| if [ "$ROUTE_GATEWAY" == "$IP_ADDRESS" ]; then | ||
| echo "Skipping." | ||
| continue | ||
| fi | ||
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| # Ask to delete route to subnet before adding route to Docker VM | ||
| read -p "Do you want to remove this existing route? (y/n): " CHOICE | ||
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| if [[ "$CHOICE" == "y" || "$CHOICE" == "Y" ]]; then | ||
| # Remove the existing route | ||
| echo "[NEED SUDO RIGHTS] Removing existing route for subnet $SUBNET..." | ||
| sudo route -n delete -net $SUBNET | ||
| else | ||
| echo "Skipping route addition for subnet $SUBNET." | ||
| continue | ||
| fi | ||
| fi | ||
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| # Add the new route for the subnet to the IP_ADDRESS | ||
| echo "[NEED SUDO RIGHTS] Adding route to subnet $SUBNET via $IP_ADDRESS..." | ||
| sudo route -n add -net $SUBNET $IP_ADDRESS | ||
| done | ||
| else | ||
| echo "Network: $NETWORK_NAME (ID: $NETWORK_ID) has no defined subnets." | ||
| fi | ||
| echo "Done." | ||
| done | ||
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