mirror of
https://github.com/hashicorp/vault.git
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9ed00822ea
* Move command/config + command/token to api/cliconfig + api/tokenhelper * Remove unused functions and unused import * Simplify and inline function copied from SDK * Delete unused duplicated/forwarding config implementation from command package * Delete unused code, unexport API surface that's only used internally to the package * Fix up license headers * Add changelog * Tweak .gitignore to track hcl files in testdata/ folders
100 lines
2.6 KiB
Go
100 lines
2.6 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package cliconfig
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import (
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"fmt"
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"os"
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"github.com/hashicorp/go-multierror"
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"github.com/hashicorp/hcl"
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"github.com/hashicorp/hcl/hcl/ast"
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"github.com/mitchellh/go-homedir"
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)
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const (
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// defaultConfigPath is the default path to the configuration file
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defaultConfigPath = "~/.vault"
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// configPathEnv is the environment variable that can be used to
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// override where the Vault configuration is.
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configPathEnv = "VAULT_CONFIG_PATH"
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)
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// Config is the CLI configuration for Vault that can be specified via
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// a `$HOME/.vault` file which is HCL-formatted (therefore HCL or JSON).
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type defaultConfig struct {
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// TokenHelper is the executable/command that is executed for storing
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// and retrieving the authentication token for the Vault CLI. If this
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// is not specified, then vault's internal token store will be used, which
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// stores the token on disk unencrypted.
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TokenHelper string `hcl:"token_helper"`
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}
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// loadConfig reads the configuration from the given path. If path is
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// empty, then the default path will be used, or the environment variable
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// if set.
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func loadConfig(path string) (*defaultConfig, error) {
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if path == "" {
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path = defaultConfigPath
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}
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if v := os.Getenv(configPathEnv); v != "" {
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path = v
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}
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// NOTE: requires HOME env var to be set
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path, err := homedir.Expand(path)
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if err != nil {
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return nil, fmt.Errorf("error expanding config path %q: %w", path, err)
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}
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contents, err := os.ReadFile(path)
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if err != nil && !os.IsNotExist(err) {
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return nil, err
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}
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conf, err := parseConfig(string(contents))
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if err != nil {
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return nil, fmt.Errorf("error parsing config file at %q: %w; ensure that the file is valid; Ansible Vault is known to conflict with it", path, err)
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}
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return conf, nil
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}
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// parseConfig parses the given configuration as a string.
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func parseConfig(contents string) (*defaultConfig, error) {
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root, err := hcl.Parse(contents)
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if err != nil {
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return nil, err
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}
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// Top-level item should be the object list
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list, ok := root.Node.(*ast.ObjectList)
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if !ok {
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return nil, fmt.Errorf("failed to parse config; does not contain a root object")
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}
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valid := map[string]struct{}{
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"token_helper": {},
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}
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var validationErrors error
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for _, item := range list.Items {
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key := item.Keys[0].Token.Value().(string)
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if _, ok := valid[key]; !ok {
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validationErrors = multierror.Append(validationErrors, fmt.Errorf("invalid key %q on line %d", key, item.Assign.Line))
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}
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}
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if validationErrors != nil {
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return nil, validationErrors
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}
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var c defaultConfig
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if err := hcl.DecodeObject(&c, list); err != nil {
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return nil, err
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}
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return &c, nil
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}
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