mirror of
https://github.com/tailscale/tailscale.git
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69 lines
1.5 KiB
Go
69 lines
1.5 KiB
Go
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package main
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import (
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"encoding/json"
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"fmt"
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"log"
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"net/http"
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"net/netip"
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"go4.org/netipx"
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)
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// See https://docs.aws.amazon.com/vpc/latest/userguide/aws-ip-ranges.html
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type AWSMeta struct {
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SyncToken string `json:"syncToken"`
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CreateDate string `json:"createDate"`
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Prefixes []struct {
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IPPrefix string `json:"ip_prefix"`
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Region string `json:"region"`
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Service string `json:"service"`
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NetworkBorderGroup string `json:"network_border_group"`
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} `json:"prefixes"`
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Ipv6Prefixes []struct {
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Ipv6Prefix string `json:"ipv6_prefix"`
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Region string `json:"region"`
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Service string `json:"service"`
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NetworkBorderGroup string `json:"network_border_group"`
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} `json:"ipv6_prefixes"`
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}
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func aws() {
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r, err := http.Get("https://ip-ranges.amazonaws.com/ip-ranges.json")
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if err != nil {
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log.Fatal(err)
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}
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defer r.Body.Close()
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var aws AWSMeta
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if err := json.NewDecoder(r.Body).Decode(&aws); err != nil {
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log.Fatal(err)
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}
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var ips netipx.IPSetBuilder
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for _, prefix := range aws.Prefixes {
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ips.AddPrefix(netip.MustParsePrefix(prefix.IPPrefix))
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}
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for _, prefix := range aws.Ipv6Prefixes {
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ips.AddPrefix(netip.MustParsePrefix(prefix.Ipv6Prefix))
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}
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set, err := ips.IPSet()
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if err != nil {
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log.Fatal(err)
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}
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fmt.Println(`"routes": [`)
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for _, pfx := range set.Prefixes() {
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fmt.Printf(`"%s": ["tag:connector"],%s`, pfx.String(), "\n")
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}
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fmt.Println(`]`)
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advertiseRoutes(set)
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}
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