114 lines
2.7 KiB
Go
114 lines
2.7 KiB
Go
package command
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import (
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"fmt"
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"io/ioutil"
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"strings"
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"github.com/hashicorp/hcl/hcl/printer"
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"github.com/hashicorp/vault/helper/namespace"
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"github.com/hashicorp/vault/vault"
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"github.com/mitchellh/cli"
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homedir "github.com/mitchellh/go-homedir"
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"github.com/posener/complete"
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)
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var (
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_ cli.Command = (*PolicyFmtCommand)(nil)
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_ cli.CommandAutocomplete = (*PolicyFmtCommand)(nil)
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)
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type PolicyFmtCommand struct {
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*BaseCommand
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}
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func (c *PolicyFmtCommand) Synopsis() string {
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return "Formats a policy on disk"
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}
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func (c *PolicyFmtCommand) Help() string {
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helpText := `
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Usage: vault policy fmt [options] PATH
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Formats a local policy file to the policy specification. This command will
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overwrite the file at the given PATH with the properly-formatted policy
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file contents.
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Format the local file "my-policy.hcl" as a policy file:
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$ vault policy fmt my-policy.hcl
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` + c.Flags().Help()
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return strings.TrimSpace(helpText)
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}
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func (c *PolicyFmtCommand) Flags() *FlagSets {
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return c.flagSet(FlagSetNone)
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}
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func (c *PolicyFmtCommand) AutocompleteArgs() complete.Predictor {
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return complete.PredictFiles("*.hcl")
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}
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func (c *PolicyFmtCommand) AutocompleteFlags() complete.Flags {
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return c.Flags().Completions()
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}
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func (c *PolicyFmtCommand) Run(args []string) int {
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f := c.Flags()
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if err := f.Parse(args); err != nil {
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c.UI.Error(err.Error())
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return 1
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}
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args = f.Args()
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switch {
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case len(args) < 1:
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c.UI.Error(fmt.Sprintf("Not enough arguments (expected 1, got %d)", len(args)))
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return 1
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case len(args) > 1:
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c.UI.Error(fmt.Sprintf("Too many arguments (expected 1, got %d)", len(args)))
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return 1
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}
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// Get the filepath, accounting for ~ and stuff
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path, err := homedir.Expand(strings.TrimSpace(args[0]))
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if err != nil {
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c.UI.Error(fmt.Sprintf("Failed to expand path: %s", err))
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return 1
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}
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// Read the entire contents into memory - it would be nice if we could use
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// a buffer, but hcl wants the full contents.
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b, err := ioutil.ReadFile(path)
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error reading source file: %s", err))
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return 1
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}
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// Actually parse the policy. We always use the root namespace here because
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// we don't want to modify the results.
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if _, err := vault.ParseACLPolicy(namespace.RootNamespace, string(b)); err != nil {
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c.UI.Error(err.Error())
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return 1
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}
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// Generate final contents
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result, err := printer.Format(b)
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error printing result: %s", err))
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return 1
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}
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// Write them back out
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if err := ioutil.WriteFile(path, result, 0o644); err != nil {
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c.UI.Error(fmt.Sprintf("Error writing result: %s", err))
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return 1
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}
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c.UI.Output(fmt.Sprintf("Success! Formatted policy: %s", path))
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return 0
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}
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