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