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https://github.com/siderolabs/talos.git
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22f375300c
Fix all discovered issues. Detected couple bugs, fixed them as well. Signed-off-by: Artem Chernyshev <artem.0xD2@gmail.com>
57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package keys
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import (
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"fmt"
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"github.com/google/uuid"
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"github.com/talos-systems/go-smbios/smbios"
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)
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// NodeIDKeyHandler generates the key based on current node information
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// and provided template string.
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type NodeIDKeyHandler struct{}
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// NewNodeIDKeyHandler creates new NodeIDKeyHandler.
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func NewNodeIDKeyHandler() (*NodeIDKeyHandler, error) {
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return &NodeIDKeyHandler{}, nil
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}
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// GetKey implements KeyHandler interface.
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func (h *NodeIDKeyHandler) GetKey(options ...KeyOption) ([]byte, error) {
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opts, err := NewDefaultOptions(options)
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if err != nil {
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return nil, err
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}
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s, err := smbios.New()
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if err != nil {
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return nil, err
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}
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machineUUID, err := s.SystemInformation().UUID()
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if err != nil {
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return nil, err
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}
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if machineUUID == uuid.Nil {
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return nil, fmt.Errorf("machine UUID is not populated %s", machineUUID)
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}
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id := machineUUID.String()
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// primitive entropy check
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counts := map[rune]int{}
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for _, s := range id {
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counts[s]++
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if counts[s] > len(id)/2 {
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return nil, fmt.Errorf("machine UUID %s entropy check failed", machineUUID)
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}
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}
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return []byte(id + opts.PartitionLabel), nil
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}
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