azureidentity.go

package azureidentity

import (
	"context"
	"crypto/x509"
	"encoding/base64"
	"encoding/json"
	"encoding/pem"
	"errors"
	"io"
	"net/http"
	"regexp"
	"sync"
	"time"

	"go.mozilla.org/pkcs7"
	"golang.org/x/xerrors"
)

// allowedSigners matches valid common names listed here:
// https://docs.microsoft.com/en-us/azure/virtual-machines/windows/instance-metadata-service?tabs=linux#tabgroup_14
var allowedSigners = regexp.MustCompile(`^(.*\.)?metadata\.(azure\.(com|us|cn)|microsoftazure\.de)$`)

// The pkcs7 library has a global variable that is incremented
// each time a parse occurs.
var pkcs7Mutex sync.Mutex

type metadata struct {
	VMID string `json:"vmId"`
}

type Options struct {
	x509.VerifyOptions
	Offline bool
}

// Validate ensures the signature was signed by an Azure certificate.
// It returns the associated VM ID if successful.
func Validate(ctx context.Context, signature string, options Options) (string, error) {
	data, err := base64.StdEncoding.DecodeString(signature)
	if err != nil {
		return "", xerrors.Errorf("decode base64: %w", err)
	}
	pkcs7Mutex.Lock()
	pkcs7Data, err := pkcs7.Parse(data)
	pkcs7Mutex.Unlock()
	if err != nil {
		return "", xerrors.Errorf("parse pkcs7: %w", err)
	}
	signer := pkcs7Data.GetOnlySigner()
	if signer == nil {
		return "", xerrors.New("no signers for signature")
	}
	if !allowedSigners.MatchString(signer.Subject.CommonName) {
		return "", xerrors.Errorf("unmatched common name of signer: %q", signer.Subject.CommonName)
	}
	if options.Intermediates == nil {
		options.Intermediates = x509.NewCertPool()
		for _, cert := range Certificates {
			block, rest := pem.Decode([]byte(cert))
			if len(rest) != 0 {
				return "", xerrors.Errorf("invalid certificate. %d bytes remain", len(rest))
			}
			cert, err := x509.ParseCertificate(block.Bytes)
			if err != nil {
				return "", xerrors.Errorf("parse certificate: %w", err)
			}
			options.Intermediates.AddCert(cert)
		}
	}

	_, err = signer.Verify(options.VerifyOptions)
	if err != nil {
		if !errors.As(err, &x509.UnknownAuthorityError{}) {
			return "", xerrors.Errorf("verify signature: %w", err)
		}
		if options.Offline {
			return "", xerrors.Errorf("certificate from %v is not cached: %w", signer.IssuingCertificateURL, err)
		}

		ctx, cancelFunc := context.WithTimeout(ctx, 5*time.Second)
		defer cancelFunc()
		for _, certURL := range signer.IssuingCertificateURL {
			req, err := http.NewRequestWithContext(ctx, "GET", certURL, nil)
			if err != nil {
				return "", xerrors.Errorf("new request %q: %w", certURL, err)
			}
			res, err := http.DefaultClient.Do(req)
			if err != nil {
				return "", xerrors.Errorf("no cached certificate for %q found. error fetching: %w", certURL, err)
			}
			data, err := io.ReadAll(res.Body)
			if err != nil {
				_ = res.Body.Close()
				return "", xerrors.Errorf("read body %q: %w", certURL, err)
			}
			_ = res.Body.Close()
			cert, err := x509.ParseCertificate(data)
			if err != nil {
				return "", xerrors.Errorf("parse certificate %q: %w", certURL, err)
			}
			options.Intermediates.AddCert(cert)
		}
		_, err = signer.Verify(options.VerifyOptions)
		if err != nil {
			return "", err
		}
	}

	var metadata metadata
	err = json.Unmarshal(pkcs7Data.Content, &metadata)
	if err != nil {
		return "", xerrors.Errorf("unmarshal metadata: %w", err)
	}
	return metadata.VMID, nil
}

// Certificates are manually downloaded from Azure, then processed with OpenSSL
// and added here. See: https://learn.microsoft.com/en-us/azure/security/fundamentals/azure-ca-details
//
// 1. Download the certificate
// 2. Convert to PEM format: `openssl x509 -in cert.pem -text`
// 3. Paste the contents into the array below
var Certificates = []string{
	// Microsoft RSA TLS CA 01
	`-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`,
	// Microsoft RSA TLS CA 02
	`-----BEGIN CERTIFICATE-----
MIIFWjCCBEKgAwIBAgIQD6dHIsU9iMgPWJ77H51KOjANBgkqhkiG9w0BAQsFADBa
MQswCQYDVQQGEwJJRTESMBAGA1UEChMJQmFsdGltb3JlMRMwEQYDVQQLEwpDeWJl
clRydXN0MSIwIAYDVQQDExlCYWx0aW1vcmUgQ3liZXJUcnVzdCBSb290MB4XDTIw
MDcyMTIzMDAwMFoXDTI0MTAwODA3MDAwMFowTzELMAkGA1UEBhMCVVMxHjAcBgNV
BAoTFU1pY3Jvc29mdCBDb3Jwb3JhdGlvbjEgMB4GA1UEAxMXTWljcm9zb2Z0IFJT
QSBUTFMgQ0EgMDIwggIiMA0GCSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQD0wBlZ
qiokfAYhMdHuEvWBapTj9tFKL+NdsS4pFDi8zJVdKQfR+F039CDXtD9YOnqS7o88
+isKcgOeQNTri472mPnn8N3vPCX0bDOEVk+nkZNIBA3zApvGGg/40Thv78kAlxib
MipsKahdbuoHByOB4ZlYotcBhf/ObUf65kCRfXMRQqOKWkZLkilPPn3zkYM5GHxe
I4MNZ1SoKBEoHa2E/uDwBQVxadY4SRZWFxMd7ARyI4Cz1ik4N2Z6ALD3MfjAgEED
woknyw9TGvr4PubAZdqU511zNLBoavar2OAVTl0Tddj+RAhbnX1/zypqk+ifv+d3
CgiDa8Mbvo1u2Q8nuUBrKVUmR6EjkV/dDrIsUaU643v/Wp/uE7xLDdhC5rplK9si
NlYohMTMKLAkjxVeWBWbQj7REickISpc+yowi3yUrO5lCgNAKrCNYw+wAfAvhFkO
eqPm6kP41IHVXVtGNC/UogcdiKUiR/N59IfYB+o2v54GMW+ubSC3BohLFbho/oZZ
5XyulIZK75pwTHmauCIeE5clU9ivpLwPTx9b0Vno9+ApElrFgdY0/YKZ46GfjOC9
ta4G25VJ1WKsMmWLtzyrfgwbYopquZd724fFdpvsxfIvMG5m3VFkThOqzsOttDcU
fyMTqM2pan4txG58uxNJ0MjR03UCEULRU+qMnwIDAQABo4IBJTCCASEwHQYDVR0O
BBYEFP8vf+EG9DjzLe0ljZjC/g72bPz6MB8GA1UdIwQYMBaAFOWdWTCCR1jMrPoI
VDaGezq1BE3wMA4GA1UdDwEB/wQEAwIBhjAdBgNVHSUEFjAUBggrBgEFBQcDAQYI
KwYBBQUHAwIwEgYDVR0TAQH/BAgwBgEB/wIBADA0BggrBgEFBQcBAQQoMCYwJAYI
KwYBBQUHMAGGGGh0dHA6Ly9vY3NwLmRpZ2ljZXJ0LmNvbTA6BgNVHR8EMzAxMC+g
LaArhilodHRwOi8vY3JsMy5kaWdpY2VydC5jb20vT21uaXJvb3QyMDI1LmNybDAq
BgNVHSAEIzAhMAgGBmeBDAECATAIBgZngQwBAgIwCwYJKwYBBAGCNyoBMA0GCSqG
SIb3DQEBCwUAA4IBAQCg2d165dQ1tHS0IN83uOi4S5heLhsx+zXIOwtxnvwCWdOJ
3wFLQaFDcgaMtN79UjMIFVIUedDZBsvalKnx+6l2tM/VH4YAyNPx+u1LFR0joPYp
QYLbNYkedkNuhRmEBesPqj4aDz68ZDI6fJ92sj2q18QvJUJ5Qz728AvtFOat+Ajg
K0PFqPYEAviUKr162NB1XZJxf6uyIjUlnG4UEdHfUqdhl0R84mMtrYINksTzQ2sH
YM8fEhqICtTlcRLr/FErUaPUe9648nziSnA0qKH7rUZqP/Ifmbo+WNZSZG1BbgOh
lk+521W+Ncih3HRbvRBE0LWYT8vWKnfjgZKxwHwJ
-----END CERTIFICATE-----`,
	// Microsoft Azure TLS Issuing CA 01
	`-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`,
	// Microsoft Azure TLS Issuing CA 02
	`-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`,
	// Microsoft Azure TLS Issuing CA 05
	`-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`,
	// Microsoft Azure TLS Issuing CA 06
	`-----BEGIN CERTIFICATE-----
MIIF8zCCBNugAwIBAgIQAueRcfuAIek/4tmDg0xQwDANBgkqhkiG9w0BAQwFADBh
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c29mdCBBenVyZSBUTFMgSXNzdWluZyBDQSAwNjCCAiIwDQYJKoZIhvcNAQEBBQAD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-----END CERTIFICATE-----`,
}