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config.go
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config.go
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package server
import (
"errors"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"strconv"
"strings"
"time"
"github.com/hashicorp/errwrap"
"github.com/hashicorp/go-multierror"
"github.com/hashicorp/hcl"
"github.com/hashicorp/hcl/hcl/ast"
"github.com/hashicorp/vault/internalshared/configutil"
"github.com/hashicorp/vault/sdk/helper/jsonutil"
"github.com/hashicorp/vault/sdk/helper/parseutil"
)
// Config is the configuration for the vault server.
type Config struct {
entConfig
*configutil.SharedConfig `hcl:"-"`
Storage *Storage `hcl:"-"`
HAStorage *Storage `hcl:"-"`
ServiceRegistration *ServiceRegistration `hcl:"-"`
CacheSize int `hcl:"cache_size"`
DisableCache bool `hcl:"-"`
DisableCacheRaw interface{} `hcl:"disable_cache"`
DisablePrintableCheck bool `hcl:"-"`
DisablePrintableCheckRaw interface{} `hcl:"disable_printable_check"`
EnableUI bool `hcl:"-"`
EnableUIRaw interface{} `hcl:"ui"`
MaxLeaseTTL time.Duration `hcl:"-"`
MaxLeaseTTLRaw interface{} `hcl:"max_lease_ttl"`
DefaultLeaseTTL time.Duration `hcl:"-"`
DefaultLeaseTTLRaw interface{} `hcl:"default_lease_ttl"`
ClusterCipherSuites string `hcl:"cluster_cipher_suites"`
PluginDirectory string `hcl:"plugin_directory"`
EnableRawEndpoint bool `hcl:"-"`
EnableRawEndpointRaw interface{} `hcl:"raw_storage_endpoint"`
APIAddr string `hcl:"api_addr"`
ClusterAddr string `hcl:"cluster_addr"`
DisableClustering bool `hcl:"-"`
DisableClusteringRaw interface{} `hcl:"disable_clustering"`
DisablePerformanceStandby bool `hcl:"-"`
DisablePerformanceStandbyRaw interface{} `hcl:"disable_performance_standby"`
DisableSealWrap bool `hcl:"-"`
DisableSealWrapRaw interface{} `hcl:"disable_sealwrap"`
DisableIndexing bool `hcl:"-"`
DisableIndexingRaw interface{} `hcl:"disable_indexing"`
}
// DevConfig is a Config that is used for dev mode of Vault.
func DevConfig(storageType string) (*Config, error) {
hclStr := `
disable_mlock = true
listener "tcp" {
address = "127.0.0.1:8200"
tls_disable = true
proxy_protocol_behavior = "allow_authorized"
proxy_protocol_authorized_addrs = "127.0.0.1:8200"
}
telemetry {
prometheus_retention_time = "24h"
disable_hostname = true
}
enable_raw_endpoint = true
storage "%s" {
}
enable_ui = true
`
hclStr = fmt.Sprintf(hclStr, storageType)
parsed, err := ParseConfig(hclStr)
if err != nil {
return nil, fmt.Errorf("error parsing dev config: %w", err)
}
return parsed, nil
}
// Storage is the underlying storage configuration for the server.
type Storage struct {
Type string
RedirectAddr string
ClusterAddr string
DisableClustering bool
Config map[string]string
}
func (b *Storage) GoString() string {
return fmt.Sprintf("*%#v", *b)
}
// ServiceRegistration is the optional service discovery for the server.
type ServiceRegistration struct {
Type string
Config map[string]string
}
func (b *ServiceRegistration) GoString() string {
return fmt.Sprintf("*%#v", *b)
}
func NewConfig() *Config {
return &Config{
SharedConfig: new(configutil.SharedConfig),
}
}
// Merge merges two configurations.
func (c *Config) Merge(c2 *Config) *Config {
if c2 == nil {
return c
}
result := NewConfig()
result.SharedConfig = c.SharedConfig
if c2.SharedConfig != nil {
result.SharedConfig = c.SharedConfig.Merge(c2.SharedConfig)
}
result.Storage = c.Storage
if c2.Storage != nil {
result.Storage = c2.Storage
}
result.HAStorage = c.HAStorage
if c2.HAStorage != nil {
result.HAStorage = c2.HAStorage
}
result.ServiceRegistration = c.ServiceRegistration
if c2.ServiceRegistration != nil {
result.ServiceRegistration = c2.ServiceRegistration
}
result.CacheSize = c.CacheSize
if c2.CacheSize != 0 {
result.CacheSize = c2.CacheSize
}
// merging these booleans via an OR operation
result.DisableCache = c.DisableCache
if c2.DisableCache {
result.DisableCache = c2.DisableCache
}
result.DisablePrintableCheck = c.DisablePrintableCheck
if c2.DisablePrintableCheckRaw != nil {
result.DisablePrintableCheck = c2.DisablePrintableCheck
}
// merge these integers via a MAX operation
result.MaxLeaseTTL = c.MaxLeaseTTL
if c2.MaxLeaseTTL > result.MaxLeaseTTL {
result.MaxLeaseTTL = c2.MaxLeaseTTL
}
result.DefaultLeaseTTL = c.DefaultLeaseTTL
if c2.DefaultLeaseTTL > result.DefaultLeaseTTL {
result.DefaultLeaseTTL = c2.DefaultLeaseTTL
}
result.ClusterCipherSuites = c.ClusterCipherSuites
if c2.ClusterCipherSuites != "" {
result.ClusterCipherSuites = c2.ClusterCipherSuites
}
result.EnableUI = c.EnableUI
if c2.EnableUI {
result.EnableUI = c2.EnableUI
}
result.EnableRawEndpoint = c.EnableRawEndpoint
if c2.EnableRawEndpoint {
result.EnableRawEndpoint = c2.EnableRawEndpoint
}
result.APIAddr = c.APIAddr
if c2.APIAddr != "" {
result.APIAddr = c2.APIAddr
}
result.ClusterAddr = c.ClusterAddr
if c2.ClusterAddr != "" {
result.ClusterAddr = c2.ClusterAddr
}
// Retain raw value so that it can be assigned to storage objects
result.DisableClustering = c.DisableClustering
result.DisableClusteringRaw = c.DisableClusteringRaw
if c2.DisableClusteringRaw != nil {
result.DisableClustering = c2.DisableClustering
result.DisableClusteringRaw = c2.DisableClusteringRaw
}
result.PluginDirectory = c.PluginDirectory
if c2.PluginDirectory != "" {
result.PluginDirectory = c2.PluginDirectory
}
result.DisablePerformanceStandby = c.DisablePerformanceStandby
if c2.DisablePerformanceStandby {
result.DisablePerformanceStandby = c2.DisablePerformanceStandby
}
result.DisableSealWrap = c.DisableSealWrap
if c2.DisableSealWrap {
result.DisableSealWrap = c2.DisableSealWrap
}
result.DisableIndexing = c.DisableIndexing
if c2.DisableIndexing {
result.DisableIndexing = c2.DisableIndexing
}
// Use values from top-level configuration for storage if set
if storage := result.Storage; storage != nil {
if result.APIAddr != "" {
storage.RedirectAddr = result.APIAddr
}
if result.ClusterAddr != "" {
storage.ClusterAddr = result.ClusterAddr
}
if result.DisableClusteringRaw != nil {
storage.DisableClustering = result.DisableClustering
}
}
if haStorage := result.HAStorage; haStorage != nil {
if result.APIAddr != "" {
haStorage.RedirectAddr = result.APIAddr
}
if result.ClusterAddr != "" {
haStorage.ClusterAddr = result.ClusterAddr
}
if result.DisableClusteringRaw != nil {
haStorage.DisableClustering = result.DisableClustering
}
}
return result
}
// LoadConfig loads the configuration at the given path, regardless if
// its a file or directory.
func LoadConfig(path string) (*Config, error) {
fi, err := os.Stat(path)
if err != nil {
return nil, err
}
if fi.IsDir() {
return CheckConfig(LoadConfigDir(path))
}
return CheckConfig(LoadConfigFile(path))
}
func CheckConfig(c *Config, e error) (*Config, error) {
if e != nil {
return c, e
}
if len(c.Seals) == 2 {
switch {
case c.Seals[0].Disabled && c.Seals[1].Disabled:
return nil, errors.New("seals: two seals provided but both are disabled")
case !c.Seals[0].Disabled && !c.Seals[1].Disabled:
return nil, errors.New("seals: two seals provided but neither is disabled")
}
}
return c, nil
}
// LoadConfigFile loads the configuration from the given file.
func LoadConfigFile(path string) (*Config, error) {
// Read the file
d, err := ioutil.ReadFile(path)
if err != nil {
return nil, err
}
conf, err := ParseConfig(string(d))
if err != nil {
return nil, err
}
return conf, nil
}
func ParseConfig(d string) (*Config, error) {
// Parse!
obj, err := hcl.Parse(d)
if err != nil {
return nil, err
}
// Start building the result
result := NewConfig()
if err := hcl.DecodeObject(result, obj); err != nil {
return nil, err
}
sharedConfig, err := configutil.ParseConfig(d)
if err != nil {
return nil, err
}
result.SharedConfig = sharedConfig
if result.MaxLeaseTTLRaw != nil {
if result.MaxLeaseTTL, err = parseutil.ParseDurationSecond(result.MaxLeaseTTLRaw); err != nil {
return nil, err
}
}
if result.DefaultLeaseTTLRaw != nil {
if result.DefaultLeaseTTL, err = parseutil.ParseDurationSecond(result.DefaultLeaseTTLRaw); err != nil {
return nil, err
}
}
if result.EnableUIRaw != nil {
if result.EnableUI, err = parseutil.ParseBool(result.EnableUIRaw); err != nil {
return nil, err
}
}
if result.DisableCacheRaw != nil {
if result.DisableCache, err = parseutil.ParseBool(result.DisableCacheRaw); err != nil {
return nil, err
}
}
if result.DisablePrintableCheckRaw != nil {
if result.DisablePrintableCheck, err = parseutil.ParseBool(result.DisablePrintableCheckRaw); err != nil {
return nil, err
}
}
if result.EnableRawEndpointRaw != nil {
if result.EnableRawEndpoint, err = parseutil.ParseBool(result.EnableRawEndpointRaw); err != nil {
return nil, err
}
}
if result.DisableClusteringRaw != nil {
if result.DisableClustering, err = parseutil.ParseBool(result.DisableClusteringRaw); err != nil {
return nil, err
}
}
if result.DisablePerformanceStandbyRaw != nil {
if result.DisablePerformanceStandby, err = parseutil.ParseBool(result.DisablePerformanceStandbyRaw); err != nil {
return nil, err
}
}
if result.DisableSealWrapRaw != nil {
if result.DisableSealWrap, err = parseutil.ParseBool(result.DisableSealWrapRaw); err != nil {
return nil, err
}
}
if result.DisableIndexingRaw != nil {
if result.DisableIndexing, err = parseutil.ParseBool(result.DisableIndexingRaw); err != nil {
return nil, err
}
}
list, ok := obj.Node.(*ast.ObjectList)
if !ok {
return nil, fmt.Errorf("error parsing: file doesn't contain a root object")
}
// Look for storage but still support old backend
if o := list.Filter("storage"); len(o.Items) > 0 {
if err := ParseStorage(result, o, "storage"); err != nil {
return nil, errwrap.Wrapf("error parsing 'storage': {{err}}", err)
}
} else {
if o := list.Filter("backend"); len(o.Items) > 0 {
if err := ParseStorage(result, o, "backend"); err != nil {
return nil, errwrap.Wrapf("error parsing 'backend': {{err}}", err)
}
}
}
if o := list.Filter("ha_storage"); len(o.Items) > 0 {
if err := parseHAStorage(result, o, "ha_storage"); err != nil {
return nil, errwrap.Wrapf("error parsing 'ha_storage': {{err}}", err)
}
} else {
if o := list.Filter("ha_backend"); len(o.Items) > 0 {
if err := parseHAStorage(result, o, "ha_backend"); err != nil {
return nil, errwrap.Wrapf("error parsing 'ha_backend': {{err}}", err)
}
}
}
// Parse service discovery
if o := list.Filter("service_registration"); len(o.Items) > 0 {
if err := parseServiceRegistration(result, o, "service_registration"); err != nil {
return nil, errwrap.Wrapf("error parsing 'service_registration': {{err}}", err)
}
}
entConfig := &(result.entConfig)
if err := entConfig.parseConfig(list); err != nil {
return nil, errwrap.Wrapf("error parsing enterprise config: {{err}}", err)
}
return result, nil
}
// LoadConfigDir loads all the configurations in the given directory
// in alphabetical order.
func LoadConfigDir(dir string) (*Config, error) {
f, err := os.Open(dir)
if err != nil {
return nil, err
}
defer f.Close()
fi, err := f.Stat()
if err != nil {
return nil, err
}
if !fi.IsDir() {
return nil, fmt.Errorf("configuration path must be a directory: %q", dir)
}
var files []string
err = nil
for err != io.EOF {
var fis []os.FileInfo
fis, err = f.Readdir(128)
if err != nil && err != io.EOF {
return nil, err
}
for _, fi := range fis {
// Ignore directories
if fi.IsDir() {
continue
}
// Only care about files that are valid to load.
name := fi.Name()
skip := true
if strings.HasSuffix(name, ".hcl") {
skip = false
} else if strings.HasSuffix(name, ".json") {
skip = false
}
if skip || isTemporaryFile(name) {
continue
}
path := filepath.Join(dir, name)
files = append(files, path)
}
}
result := NewConfig()
for _, f := range files {
config, err := LoadConfigFile(f)
if err != nil {
return nil, errwrap.Wrapf(fmt.Sprintf("error loading %q: {{err}}", f), err)
}
if result == nil {
result = config
} else {
result = result.Merge(config)
}
}
return result, nil
}
// isTemporaryFile returns true or false depending on whether the
// provided file name is a temporary file for the following editors:
// emacs or vim.
func isTemporaryFile(name string) bool {
return strings.HasSuffix(name, "~") || // vim
strings.HasPrefix(name, ".#") || // emacs
(strings.HasPrefix(name, "#") && strings.HasSuffix(name, "#")) // emacs
}
func ParseStorage(result *Config, list *ast.ObjectList, name string) error {
if len(list.Items) > 1 {
return fmt.Errorf("only one %q block is permitted", name)
}
// Get our item
item := list.Items[0]
key := name
if len(item.Keys) > 0 {
key = item.Keys[0].Token.Value().(string)
}
var config map[string]interface{}
if err := hcl.DecodeObject(&config, item.Val); err != nil {
return multierror.Prefix(err, fmt.Sprintf("%s.%s:", name, key))
}
m := make(map[string]string)
for key, val := range config {
valStr, ok := val.(string)
if ok {
m[key] = valStr
continue
}
valBytes, err := jsonutil.EncodeJSON(val)
if err != nil {
return err
}
m[key] = string(valBytes)
}
// Pull out the redirect address since it's common to all backends
var redirectAddr string
if v, ok := m["redirect_addr"]; ok {
redirectAddr = v
delete(m, "redirect_addr")
} else if v, ok := m["advertise_addr"]; ok {
redirectAddr = v
delete(m, "advertise_addr")
}
// Pull out the cluster address since it's common to all backends
var clusterAddr string
if v, ok := m["cluster_addr"]; ok {
clusterAddr = v
delete(m, "cluster_addr")
}
var disableClustering bool
var err error
if v, ok := m["disable_clustering"]; ok {
disableClustering, err = strconv.ParseBool(v)
if err != nil {
return multierror.Prefix(err, fmt.Sprintf("%s.%s:", name, key))
}
delete(m, "disable_clustering")
}
// Override with top-level values if they are set
if result.APIAddr != "" {
redirectAddr = result.APIAddr
}
if result.ClusterAddr != "" {
clusterAddr = result.ClusterAddr
}
if result.DisableClusteringRaw != nil {
disableClustering = result.DisableClustering
}
result.Storage = &Storage{
RedirectAddr: redirectAddr,
ClusterAddr: clusterAddr,
DisableClustering: disableClustering,
Type: strings.ToLower(key),
Config: m,
}
return nil
}
func parseHAStorage(result *Config, list *ast.ObjectList, name string) error {
if len(list.Items) > 1 {
return fmt.Errorf("only one %q block is permitted", name)
}
// Get our item
item := list.Items[0]
key := name
if len(item.Keys) > 0 {
key = item.Keys[0].Token.Value().(string)
}
var m map[string]string
if err := hcl.DecodeObject(&m, item.Val); err != nil {
return multierror.Prefix(err, fmt.Sprintf("%s.%s:", name, key))
}
// Pull out the redirect address since it's common to all backends
var redirectAddr string
if v, ok := m["redirect_addr"]; ok {
redirectAddr = v
delete(m, "redirect_addr")
} else if v, ok := m["advertise_addr"]; ok {
redirectAddr = v
delete(m, "advertise_addr")
}
// Pull out the cluster address since it's common to all backends
var clusterAddr string
if v, ok := m["cluster_addr"]; ok {
clusterAddr = v
delete(m, "cluster_addr")
}
var disableClustering bool
var err error
if v, ok := m["disable_clustering"]; ok {
disableClustering, err = strconv.ParseBool(v)
if err != nil {
return multierror.Prefix(err, fmt.Sprintf("%s.%s:", name, key))
}
delete(m, "disable_clustering")
}
// Override with top-level values if they are set
if result.APIAddr != "" {
redirectAddr = result.APIAddr
}
if result.ClusterAddr != "" {
clusterAddr = result.ClusterAddr
}
if result.DisableClusteringRaw != nil {
disableClustering = result.DisableClustering
}
result.HAStorage = &Storage{
RedirectAddr: redirectAddr,
ClusterAddr: clusterAddr,
DisableClustering: disableClustering,
Type: strings.ToLower(key),
Config: m,
}
return nil
}
func parseServiceRegistration(result *Config, list *ast.ObjectList, name string) error {
if len(list.Items) > 1 {
return fmt.Errorf("only one %q block is permitted", name)
}
// Get our item
item := list.Items[0]
key := name
if len(item.Keys) > 0 {
key = item.Keys[0].Token.Value().(string)
}
var m map[string]string
if err := hcl.DecodeObject(&m, item.Val); err != nil {
return multierror.Prefix(err, fmt.Sprintf("%s.%s:", name, key))
}
result.ServiceRegistration = &ServiceRegistration{
Type: strings.ToLower(key),
Config: m,
}
return nil
}
// Sanitized returns a copy of the config with all values that are considered
// sensitive stripped. It also strips all `*Raw` values that are mainly
// used for parsing.
//
// Specifically, the fields that this method strips are:
// - Storage.Config
// - HAStorage.Config
// - Seals.Config
// - Telemetry.CirconusAPIToken
func (c *Config) Sanitized() map[string]interface{} {
// Create shared config if it doesn't exist (e.g. in tests) so that map
// keys are actually populated
if c.SharedConfig == nil {
c.SharedConfig = new(configutil.SharedConfig)
}
sharedResult := c.SharedConfig.Sanitized()
result := map[string]interface{}{
"cache_size": c.CacheSize,
"disable_cache": c.DisableCache,
"disable_printable_check": c.DisablePrintableCheck,
"enable_ui": c.EnableUI,
"max_lease_ttl": c.MaxLeaseTTL,
"default_lease_ttl": c.DefaultLeaseTTL,
"cluster_cipher_suites": c.ClusterCipherSuites,
"plugin_directory": c.PluginDirectory,
"raw_storage_endpoint": c.EnableRawEndpoint,
"api_addr": c.APIAddr,
"cluster_addr": c.ClusterAddr,
"disable_clustering": c.DisableClustering,
"disable_performance_standby": c.DisablePerformanceStandby,
"disable_sealwrap": c.DisableSealWrap,
"disable_indexing": c.DisableIndexing,
}
for k, v := range sharedResult {
result[k] = v
}
// Sanitize storage stanza
if c.Storage != nil {
sanitizedStorage := map[string]interface{}{
"type": c.Storage.Type,
"redirect_addr": c.Storage.RedirectAddr,
"cluster_addr": c.Storage.ClusterAddr,
"disable_clustering": c.Storage.DisableClustering,
}
result["storage"] = sanitizedStorage
}
// Sanitize HA storage stanza
if c.HAStorage != nil {
sanitizedHAStorage := map[string]interface{}{
"type": c.HAStorage.Type,
"redirect_addr": c.HAStorage.RedirectAddr,
"cluster_addr": c.HAStorage.ClusterAddr,
"disable_clustering": c.HAStorage.DisableClustering,
}
result["ha_storage"] = sanitizedHAStorage
}
// Sanitize service_registration stanza
if c.ServiceRegistration != nil {
sanitizedServiceRegistration := map[string]interface{}{
"type": c.ServiceRegistration.Type,
}
result["service_registration"] = sanitizedServiceRegistration
}
return result
}