mirror of
https://github.com/gravitational/teleport.git
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51 lines
1.5 KiB
Go
51 lines
1.5 KiB
Go
/*
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* Teleport
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* Copyright (C) 2023 Gravitational, Inc.
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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 Affero 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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package utils
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import (
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"os"
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"path/filepath"
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"strings"
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"github.com/gravitational/trace"
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log "github.com/sirupsen/logrus"
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)
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// TryReadValueAsFile is a utility function to read a value
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// from the disk if it looks like an absolute path,
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// otherwise, treat it as a value.
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// It only support absolute paths to avoid ambiguity in interpretation of the value
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func TryReadValueAsFile(value string) (string, error) {
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if !filepath.IsAbs(value) {
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return value, nil
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}
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// treat it as an absolute filepath
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contents, err := os.ReadFile(value)
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if err != nil {
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return "", trace.ConvertSystemError(err)
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}
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// trim newlines as tokens in files tend to have newlines
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out := strings.TrimSpace(string(contents))
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if out == "" {
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log.Warnf("Empty config value file: %v", value)
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}
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return out, nil
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}
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