112 lines
3.5 KiB
Go
112 lines
3.5 KiB
Go
// Mgmt
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// Copyright (C) 2013-2024+ James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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//
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// Additional permission under GNU GPL version 3 section 7
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//
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// If you modify this program, or any covered work, by linking or combining it
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// with embedded mcl code and modules (and that the embedded mcl code and
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// modules which link with this program, contain a copy of their source code in
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// the authoritative form) containing parts covered by the terms of any other
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// license, the licensors of this program grant you additional permission to
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// convey the resulting work. Furthermore, the licensors of this program grant
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// the original author, James Shubin, additional permission to update this
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// additional permission if he deems it necessary to achieve the goals of this
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// additional permission.
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package corenet
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import (
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"context"
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"fmt"
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"net"
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"strings"
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"github.com/purpleidea/mgmt/lang/funcs/simple"
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"github.com/purpleidea/mgmt/lang/types"
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)
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func init() {
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simple.ModuleRegister(ModuleName, "is_mac", &simple.Scaffold{
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T: types.NewType("func(a str) bool"),
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F: IsMac,
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})
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simple.ModuleRegister(ModuleName, "macfmt", &simple.Scaffold{
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T: types.NewType("func(a str) str"),
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F: MacFmt,
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})
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simple.ModuleRegister(ModuleName, "oldmacfmt", &simple.Scaffold{
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T: types.NewType("func(a str) str"),
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F: OldMacFmt,
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})
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}
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// IsMac takes a string and returns true if it's a mac in the standard format.
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func IsMac(ctx context.Context, input []types.Value) (types.Value, error) {
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mac := input[0].Str()
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// Check if the MAC address is valid.
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if len(mac) != len("00:00:00:00:00:00") {
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return nil, fmt.Errorf("invalid MAC address length: %s", mac)
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}
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hw, err := net.ParseMAC(mac)
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if err != nil {
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return nil, err
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}
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return &types.BoolValue{
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V: hw.String() == mac,
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}, nil
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}
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// MacFmt takes a MAC address with hyphens and converts it to a format with
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// colons.
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func MacFmt(ctx context.Context, input []types.Value) (types.Value, error) {
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mac := input[0].Str()
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// Check if the MAC address is valid.
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if len(mac) != len("00:00:00:00:00:00") {
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return nil, fmt.Errorf("invalid MAC address length: %s", mac)
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}
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hw, err := net.ParseMAC(mac)
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if err != nil {
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return nil, err
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}
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return &types.StrValue{
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V: hw.String(), // makes it lowercase and everything
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}, nil
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}
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// OldMacFmt takes a MAC address with colons and converts it to a format with
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// hyphens. This is the old deprecated style that nobody likes.
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func OldMacFmt(ctx context.Context, input []types.Value) (types.Value, error) {
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mac := input[0].Str()
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// Check if the MAC address is valid.
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if len(mac) != len("00:00:00:00:00:00") {
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return nil, fmt.Errorf("invalid MAC address length: %s", mac)
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}
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hw, err := net.ParseMAC(mac)
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if err != nil {
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return nil, err
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}
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return &types.StrValue{
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V: strings.Replace(hw.String(), ":", "-", -1),
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}, nil
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}
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