85 lines
2.3 KiB
Go
85 lines
2.3 KiB
Go
package runtimepath
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import (
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"errors"
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"os"
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"path/filepath"
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)
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// CheckKeyLayout 拒绝同时存在新旧密钥，避免误用另一套加密材料。
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func CheckKeyLayout(root string) error {
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legacy, modern := false, false
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for _, name := range []string{"credential.key", "external-email-encryption.key", "external-email-fingerprint.key"} {
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if _, err := os.Lstat(filepath.Join(root, "data", name)); err == nil {
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legacy = true
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} else if !os.IsNotExist(err) {
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return err
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}
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if _, err := os.Lstat(filepath.Join(root, "ssl", name)); err == nil {
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modern = true
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} else if !os.IsNotExist(err) {
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return err
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}
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}
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if legacy && modern {
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return errors.New("新旧目录同时存在密钥，必须先人工确认迁移，不能自动选择")
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}
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return nil
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}
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// DeploymentLayout 识别已迁移部署，旧部署继续只读原路径，不能静默生成替代密钥。
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func DeploymentLayout(root string) bool {
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if _, err := os.Lstat(filepath.Join(root, "data", "credential.key")); err == nil {
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return false
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}
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for _, name := range []string{"data/smail-state.db", "ssl/credential.key"} {
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info, err := os.Lstat(filepath.Join(root, filepath.FromSlash(name)))
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if err == nil && info.Mode().IsRegular() {
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return true
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}
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}
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return false
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}
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func SecureDirectory(root, name string) (string, error) {
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directory := filepath.Join(root, name)
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if err := os.Mkdir(directory, 0700); err != nil && !os.IsExist(err) {
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return "", err
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}
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if err := safeDirectory(directory); err != nil {
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return "", err
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}
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return directory, os.Chmod(directory, 0700)
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}
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func KeyDirectory(root string) string {
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if DeploymentLayout(root) {
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return filepath.Join(root, "ssl")
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}
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return filepath.Join(root, "data")
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}
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func SSLReference(root, value string) string {
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value = LegacyReference(value)
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if !DeploymentLayout(root) {
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return value
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}
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for _, prefix := range []string{"data/ssl", "data/dkim"} {
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if value == prefix || len(value) > len(prefix) && value[:len(prefix)+1] == prefix+"/" {
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if prefix == "data/dkim" {
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return "ssl/dkim" + value[len(prefix):]
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}
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return "ssl" + value[len(prefix):]
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}
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}
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return value
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}
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func SSLDirectory(root string) string {
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return filepath.Join(root, filepath.FromSlash(SSLReference(root, "data/ssl")))
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}
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func DKIMDirectory(root string) string {
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return filepath.Join(root, filepath.FromSlash(SSLReference(root, "data/dkim")))
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}
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