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cmd/headscale/cli/utils: merge ip_prefix with ip_prefixes in config

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This commit is contained in:
Csaba Sarkadi 2022-01-29 16:04:15 +01:00
parent 7a86321252
commit e66f8b0eeb
1 changed files with 38 additions and 4 deletions
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42
cmd/headscale/cli/utils.go
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@ -41,8 +41,6 @@ func LoadConfig(path string) error {
viper.SetDefault("tls_letsencrypt_cache_dir", "/var/www/.cache")
viper.SetDefault("tls_letsencrypt_challenge_type", "HTTP-01")
viper.SetDefault("ip_prefixes", []string{"100.64.0.0/10"})
viper.SetDefault("log_level", "info")
viper.SetDefault("dns_config", nil)
@ -222,13 +220,49 @@ func getHeadscaleConfig() headscale.Config {
derpConfig := GetDERPConfig()
configuredPrefixes := viper.GetStringSlice("ip_prefixes")
prefixes := make([]netaddr.IPPrefix, 0, len(configuredPrefixes))
parsedPrefixes := make([]netaddr.IPPrefix, 0, len(configuredPrefixes)+1)
legacyPrefixField := viper.GetString("ip_prefix")
if len(legacyPrefixField) > 0 {
log.
Warn().
Msgf(
"%s, %s",
"use of 'ip_prefix' for configuration is deprecated",
"please see 'ip_prefixes' in the shipped example.",
)
legacyPrefix, err := netaddr.ParseIPPrefix(legacyPrefixField)
if err != nil {
panic(fmt.Errorf("failed to parse ip_prefix: %w", err))
}
parsedPrefixes = append(parsedPrefixes, legacyPrefix)
}
for i, prefixInConfig := range configuredPrefixes {
prefix, err := netaddr.ParseIPPrefix(prefixInConfig)
if err != nil {
panic(fmt.Errorf("failed to parse ip_prefixes[%d]: %w", i, err))
}
prefixes = append(prefixes, prefix)
parsedPrefixes = append(parsedPrefixes, prefix)
}
prefixes := make([]netaddr.IPPrefix, 0, len(parsedPrefixes))
{
// dedup
normalizedPrefixes := make(map[string]int, len(parsedPrefixes))
for i, p := range parsedPrefixes {
normalizedPrefixes[p.String()] = i
}
// convert back to list
for _, i := range normalizedPrefixes {
prefixes = append(prefixes, parsedPrefixes[i])
}
}
if len(prefixes) < 1 {
prefixes = append(prefixes, netaddr.MustParseIPPrefix("100.64.0.0/10"))
log.Warn().Msgf("'ip_prefixes' not configured, falling back to default: %v", prefixes)
}
return headscale.Config{