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59 lines
1.3 KiB
Go
59 lines
1.3 KiB
Go
/*
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Copyright 2020 The Flux authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package flags
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import (
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"fmt"
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"strconv"
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"strings"
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)
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var defaultRSAKeyBits = 2048
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type RSAKeyBits int
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func (b *RSAKeyBits) String() string {
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return strconv.Itoa(int(*b))
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}
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func (b *RSAKeyBits) Set(str string) error {
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if strings.TrimSpace(str) == "" {
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*b = RSAKeyBits(defaultRSAKeyBits)
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return nil
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}
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bits, err := strconv.Atoi(str)
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if err != nil {
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return err
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}
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if bits < 1024 {
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return fmt.Errorf("RSA key bit size must be at least 1024")
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}
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if bits == 0 || bits%8 != 0 {
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return fmt.Errorf("RSA key bit size must be a multiples of 8")
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}
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*b = RSAKeyBits(bits)
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return nil
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}
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func (b *RSAKeyBits) Type() string {
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return "rsaKeyBits"
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}
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func (b *RSAKeyBits) Description() string {
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return "SSH RSA public key bit size (multiplies of 8, min 1024)"
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}
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