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94 lines
3.1 KiB
Go
94 lines
3.1 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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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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package config
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import (
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"crypto/x509"
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"crypto/x509/pkix"
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"fmt"
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"net/http"
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"strings"
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color "github.com/minio/minio/pkg/color"
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)
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// Extra ASN1 OIDs that we may need to handle
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var (
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oidEmailAddress = []int{1, 2, 840, 113549, 1, 9, 1}
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)
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// printName prints the fields of a distinguished name, which include such
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// things as its common name and locality.
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func printName(names []pkix.AttributeTypeAndValue, buf *strings.Builder) []string {
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values := []string{}
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for _, name := range names {
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oid := name.Type
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if len(oid) == 4 && oid[0] == 2 && oid[1] == 5 && oid[2] == 4 {
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switch oid[3] {
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case 3:
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values = append(values, fmt.Sprintf("CN=%s", name.Value))
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case 6:
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values = append(values, fmt.Sprintf("C=%s", name.Value))
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case 8:
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values = append(values, fmt.Sprintf("ST=%s", name.Value))
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case 10:
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values = append(values, fmt.Sprintf("O=%s", name.Value))
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case 11:
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values = append(values, fmt.Sprintf("OU=%s", name.Value))
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default:
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values = append(values, fmt.Sprintf("UnknownOID=%s", name.Type.String()))
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}
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} else if oid.Equal(oidEmailAddress) {
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values = append(values, fmt.Sprintf("emailAddress=%s", name.Value))
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} else {
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values = append(values, fmt.Sprintf("UnknownOID=%s", name.Type.String()))
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}
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}
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if len(values) > 0 {
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buf.WriteString(values[0])
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for i := 1; i < len(values); i++ {
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buf.WriteString(", " + values[i])
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}
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buf.WriteString("\n")
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}
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return values
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}
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// CertificateText returns a human-readable string representation
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// of the certificate cert. The format is similar to the OpenSSL
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// way of printing certificates (not identical).
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func CertificateText(cert *x509.Certificate) string {
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var buf strings.Builder
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buf.WriteString(color.Blue("\nCertificate:\n"))
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if cert.SignatureAlgorithm != x509.UnknownSignatureAlgorithm {
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buf.WriteString(color.Blue("%4sSignature Algorithm: ", "") + color.Bold(fmt.Sprintf("%s\n", cert.SignatureAlgorithm)))
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}
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// Issuer information
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buf.WriteString(color.Blue("%4sIssuer: ", ""))
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printName(cert.Issuer.Names, &buf)
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// Validity information
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buf.WriteString(color.Blue("%4sValidity\n", ""))
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buf.WriteString(color.Bold(fmt.Sprintf("%8sNot Before: %s\n", "", cert.NotBefore.Format(http.TimeFormat))))
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buf.WriteString(color.Bold(fmt.Sprintf("%8sNot After : %s\n", "", cert.NotAfter.Format(http.TimeFormat))))
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return buf.String()
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}
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