70 lines
2.2 KiB
Bash
70 lines
2.2 KiB
Bash
#!/bin/bash
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# Define paths and variables
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CONFIG_FILE="/var/lib/cosmos/cosmos.config.json"
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USER=$(whoami)
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HOSTNAME=$(hostname)
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OUTPUT_FILE="/home/$USER/internal_hosts-$HOSTNAME.conf"
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REMOTE_SERVER="sdb-share"
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REMOTE_PATH="/etc/dnsmasq.d/"
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# Function to get IP address of an interface
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get_interface_ip() {
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local interface=$1
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ip -4 addr show "$interface" 2>/dev/null | grep -oP '(?<=inet\s)\d+(\.\d+){3}' | head -n 1
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}
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# Prefer tailscale0, fallback to eth0
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LOCAL_IP=$(get_interface_ip "tailscale0")
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if [[ -z "$LOCAL_IP" ]]; then
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LOCAL_IP=$(get_interface_ip "eth0")
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fi
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# Ensure we have a valid IP address
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if [[ -z "$LOCAL_IP" ]]; then
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echo "No valid IP address found for tailscale0 or eth0."
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exit 1
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fi
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# Check if configuration file exists
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if [[ ! -f "$CONFIG_FILE" ]]; then
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echo "Configuration file not found: $CONFIG_FILE"
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exit 1
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fi
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# Clear or create the output file
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> "$OUTPUT_FILE"
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# Extract *.internal routes (only enabled ones) and write in dnsmasq format
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jq -r '.HTTPConfig.ProxyConfig.Routes[]?
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| select(type == "object" and (.Host | test("\\.home$")) and ((.Disabled // false) | not))
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| .Host' "$CONFIG_FILE" | while read -r host; do
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echo "address=/$host/$LOCAL_IP" >> "$OUTPUT_FILE"
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done
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# Generate checksums
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LOCAL_CHECKSUM=$(sha256sum "$OUTPUT_FILE" | awk '{print $1}')
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REMOTE_CHECKSUM=$(ssh guy@$REMOTE_SERVER "sha256sum $REMOTE_PATH/$(basename $OUTPUT_FILE) 2>/dev/null" | awk '{print $1}')
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# Compare checksums and sync if different
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if [[ "$LOCAL_CHECKSUM" != "$REMOTE_CHECKSUM" ]]; then
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# Sync the file to the remote server using rsync
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if rsync -avz "$OUTPUT_FILE" "guy@$REMOTE_SERVER:$REMOTE_PATH"; then
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echo "File updated and synced to $REMOTE_SERVER:$REMOTE_PATH"
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# Restart dnsmasq service on the remote server
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if ssh guy@$REMOTE_SERVER sudo /bin/systemctl restart dnsmasq.service; then
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echo "dnsmasq service restarted successfully on $REMOTE_SERVER"
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else
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echo "Failed to restart dnsmasq service on $REMOTE_SERVER"
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exit 1
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fi
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else
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echo "Failed to sync file to $REMOTE_SERVER:$REMOTE_PATH"
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exit 1
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fi
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else
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echo "No changes detected - skipping sync"
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fi
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