Jordan Montgomery
2d33a1bc6c
<!-- Add the related story/sub-task/bug number, like Resolves #123, or remove if NA --> **Related issue:** Resolves #13798 Adds a missing unit test # Checklist for submitter If some of the following don't apply, delete the relevant line. - [x] Changes file added for user-visible changes in `changes/`, `orbit/changes/` or `ee/fleetd-chrome/changes`. See [Changes files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/guides/committing-changes.md#changes-files) for more information. - [x] Input data is properly validated, `SELECT *` is avoided, SQL injection is prevented (using placeholders for values in statements) - [x] If paths of existing endpoints are modified without backwards compatibility, checked the frontend/CLI for any necessary changes ## Testing - [x] Added/updated automated tests - [x] Where appropriate, [automated tests simulate multiple hosts and test for host isolation](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/reference/patterns-backend.md#unit-testing) (updates to one hosts's records do not affect another) - [x] QA'd all new/changed functionality manually
108 lines
2.9 KiB
Go
108 lines
2.9 KiB
Go
package apple_mdm
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import (
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"crypto/rand"
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"crypto/rsa"
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"crypto/sha256"
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"crypto/x509"
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"encoding/pem"
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"fmt"
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"math"
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"net/url"
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"path"
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"strings"
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"github.com/fleetdm/fleet/v4/server/fleet"
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"github.com/fleetdm/fleet/v4/server/mdm/nanomdm/mdm"
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)
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// Note Apple rejects CSRs if the key size is not 2048.
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const rsaKeySize = 2048
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// newPrivateKey creates an RSA private key
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func newPrivateKey() (*rsa.PrivateKey, error) {
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return rsa.GenerateKey(rand.Reader, rsaKeySize)
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}
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func EncodeCertRequestPEM(cert *x509.CertificateRequest) []byte {
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pemBlock := &pem.Block{
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Type: "CERTIFICATE REQUEST",
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Headers: nil,
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Bytes: cert.Raw,
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}
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return pem.EncodeToMemory(pemBlock)
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}
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// GenerateRandomPin generates a `length`-digit random PIN number
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//
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// The implementation details for converting the randomness to a PIN
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// have been mostly taken from https://github.com/pquerna/otp
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func GenerateRandomPin(length int) (string, error) {
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buf := make([]byte, 16)
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_, err := rand.Read(buf)
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if err != nil {
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return "", err
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}
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m := sha256.New()
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m.Write(buf)
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sum := m.Sum(nil)
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offset := sum[len(sum)-1] & 0xf
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value := int64(((int(sum[offset]) & 0x7f) << 24) |
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((int(sum[offset+1] & 0xff)) << 16) |
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((int(sum[offset+2] & 0xff)) << 8) |
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(int(sum[offset+3]) & 0xff))
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v := int32(value % int64(math.Pow10(length))) //nolint:gosec // dismiss G115
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f := fmt.Sprintf("%%0%dd", length)
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return fmt.Sprintf(f, v), nil
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}
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// FmtErrorChain formats Command error message for macOS MDM v1
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func FmtErrorChain(chain []mdm.ErrorChain) string {
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var sb strings.Builder
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for _, mdmErr := range chain {
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desc := mdmErr.USEnglishDescription
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if desc == "" {
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desc = mdmErr.LocalizedDescription
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}
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sb.WriteString(fmt.Sprintf("%s (%d): %s\n", mdmErr.ErrorDomain, mdmErr.ErrorCode, desc))
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}
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return sb.String()
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}
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// FmtDDMError formats a DDM error message
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func FmtDDMError(reasons []fleet.MDMAppleDDMStatusErrorReason) string {
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var errMsg strings.Builder
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for _, r := range reasons {
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errMsg.WriteString(fmt.Sprintf("%s: %s %+v\n", r.Code, r.Description, r.Details))
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}
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return errMsg.String()
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}
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func EnrollURL(token string, appConfig *fleet.AppConfig) (string, error) {
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enrollURL, err := url.Parse(appConfig.MDMUrl())
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if err != nil {
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return "", err
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}
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enrollURL.Path = path.Join(enrollURL.Path, EnrollPath)
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q := enrollURL.Query()
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q.Set("token", token)
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enrollURL.RawQuery = q.Encode()
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return enrollURL.String(), nil
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}
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// IsLessThanVersion returns true if the current version is less than the target version.
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// If either version is invalid, an error is returned.
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func IsLessThanVersion(current string, target string) (bool, error) {
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cv, err := fleet.VersionToSemverVersion(current)
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if err != nil {
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return false, fmt.Errorf("invalid current version: %w", err)
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}
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tv, err := fleet.VersionToSemverVersion(target)
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if err != nil {
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return false, fmt.Errorf("invalid target version: %w", err)
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}
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return cv.LessThan(tv), nil
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}
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