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// Copyright 2016 CoreOS, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package types
import (
"errors"
"fmt"
"regexp"
"github.com/coreos/ignition/config/validate/report"
)
const (
guidRegexStr = "^(|[[:xdigit:]]{8}-[[:xdigit:]]{4}-[[:xdigit:]]{4}-[[:xdigit:]]{4}-[[:xdigit:]]{12})$"
)
var (
ErrLabelTooLong = errors.New("partition labels may not exceed 36 characters")
ErrDoesntMatchGUIDRegex = errors.New("doesn't match the form \"01234567-89AB-CDEF-EDCB-A98765432101\"")
)
func (p Partition) ValidateLabel() report.Report {
r := report.Report{}
// http://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_entries:
// 56 (0x38) 72 bytes Partition name (36 UTF-16LE code units)
// XXX(vc): note GPT calls it a name, we're using label for consistency
// with udev naming /dev/disk/by-partlabel/*.
if len(p.Label) > 36 {
r.Add(report.Entry{
Message: ErrLabelTooLong.Error(),
Kind: report.EntryError,
})
}
return r
}
func (p Partition) ValidateTypeGUID() report.Report {
return validateGUID(p.TypeGUID)
}
func (p Partition) ValidateGUID() report.Report {
return validateGUID(p.GUID)
}
func validateGUID(guid string) report.Report {
r := report.Report{}
ok, err := regexp.MatchString(guidRegexStr, guid)
if err != nil {
r.Add(report.Entry{
Message: fmt.Sprintf("error matching guid regexp: %v", err),
Kind: report.EntryError,
})
} else if !ok {
r.Add(report.Entry{
Message: ErrDoesntMatchGUIDRegex.Error(),
Kind: report.EntryError,
})
}
return r
}
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