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pkg/rnsutil/iface_select.go 633735d797cc5f5d48cb2e22e8fd7cd743930daf (633735d7) Text, 1.98 KB
// SPDX-License-Identifier: Apache-2.0
// Copyright (c) 2024-2026 Quad4.io
package rnsutil
import (
"fmt"
"sort"
"strings"
"quad4/reticulum-go/pkg/common"
)
// SelectInterfaces enables only the named config interfaces.
// selector empty, "all", or "*" leaves Enabled flags unchanged.
// Otherwise selector is a comma-separated list of interface section names
// (case-insensitive). Matching sections are enabled and all others disabled.
// Returns the names that remain enabled.
func SelectInterfaces(cfg *common.ReticulumConfig, selector string) ([]string, error) {
if cfg == nil {
return nil, fmt.Errorf("nil config")
}
sel := strings.TrimSpace(selector)
if sel == "" || strings.EqualFold(sel, "all") || sel == "*" {
out := make([]string, 0, len(cfg.Interfaces))
for name, ic := range cfg.Interfaces {
if ic != nil && ic.Enabled {
out = append(out, name)
}
}
sort.Strings(out)
return out, nil
}
want := make(map[string]struct{})
for part := range strings.SplitSeq(sel, ",") {
name := strings.TrimSpace(part)
if name == "" {
continue
}
want[strings.ToLower(name)] = struct{}{}
}
if len(want) == 0 {
return nil, fmt.Errorf("empty -iface selector")
}
matched := make(map[string]struct{})
for name, ic := range cfg.Interfaces {
if ic == nil {
continue
}
key := strings.ToLower(name)
if _, ok := want[key]; ok {
ic.Enabled = true
matched[key] = struct{}{}
} else {
ic.Enabled = false
}
}
missing := make([]string, 0)
for key := range want {
if _, ok := matched[key]; !ok {
missing = append(missing, key)
}
}
if len(missing) > 0 {
return nil, fmt.Errorf("unknown interface(s): %s", strings.Join(missing, ", "))
}
out := make([]string, 0, len(matched))
for name, ic := range cfg.Interfaces {
if ic != nil && ic.Enabled {
out = append(out, name)
}
}
if len(out) == 0 {
return nil, fmt.Errorf("no interfaces enabled after -iface filter")
}
sort.Strings(out)
return out, nil
}
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