75 lines
2.0 KiB
Go
75 lines
2.0 KiB
Go
package fix
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import (
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"strings"
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"github.com/mitchellh/mapstructure"
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)
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// FixerPowerShellEscapes removes the PowerShell escape character from user
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// environment variables and elevated username and password strings
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type FixerPowerShellEscapes struct{}
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func (FixerPowerShellEscapes) Fix(input map[string]interface{}) (map[string]interface{}, error) {
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type template struct {
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Provisioners []interface{}
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}
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var psUnescape = strings.NewReplacer(
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"`$", "$",
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"`\"", "\"",
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"``", "`",
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"`'", "'",
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)
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// Decode the input into our structure, if we can
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var tpl template
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if err := mapstructure.WeakDecode(input, &tpl); err != nil {
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return nil, err
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}
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for i, raw := range tpl.Provisioners {
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var provisioners map[string]interface{}
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if err := mapstructure.Decode(raw, &provisioners); err != nil {
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// Ignore errors, could be a non-map
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continue
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}
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if ok := provisioners["type"] == "powershell"; !ok {
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continue
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}
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if _, ok := provisioners["elevated_user"]; ok {
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provisioners["elevated_user"] = psUnescape.Replace(provisioners["elevated_user"].(string))
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}
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if _, ok := provisioners["elevated_password"]; ok {
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provisioners["elevated_password"] = psUnescape.Replace(provisioners["elevated_password"].(string))
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}
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if raw, ok := provisioners["environment_vars"]; ok {
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var env_vars []string
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if err := mapstructure.Decode(raw, &env_vars); err != nil {
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continue
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}
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env_vars_unescaped := make([]interface{}, len(env_vars))
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for j, env_var := range env_vars {
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env_vars_unescaped[j] = psUnescape.Replace(env_var)
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}
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// Replace with unescaped environment variables
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provisioners["environment_vars"] = env_vars_unescaped
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}
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// Write all changes back to template
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tpl.Provisioners[i] = provisioners
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}
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if len(tpl.Provisioners) > 0 {
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input["provisioners"] = tpl.Provisioners
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}
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return input, nil
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}
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func (FixerPowerShellEscapes) Synopsis() string {
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return `Removes PowerShell escapes from user env vars and elevated username and password strings`
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}
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