d8b1d19ed6
* plumbing request context to expiration manager * moar context * address feedback * only using active context for revoke prefix * using active context for revoke commands * cancel tidy on active context * address feedback
898 lines
29 KiB
Go
898 lines
29 KiB
Go
package vault
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import (
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"context"
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"errors"
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"fmt"
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"strings"
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"time"
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"github.com/armon/go-metrics"
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"github.com/hashicorp/go-multierror"
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sockaddr "github.com/hashicorp/go-sockaddr"
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"github.com/hashicorp/vault/audit"
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"github.com/hashicorp/vault/helper/consts"
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"github.com/hashicorp/vault/helper/errutil"
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"github.com/hashicorp/vault/helper/identity"
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"github.com/hashicorp/vault/helper/jsonutil"
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"github.com/hashicorp/vault/helper/policyutil"
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"github.com/hashicorp/vault/helper/strutil"
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"github.com/hashicorp/vault/helper/wrapping"
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"github.com/hashicorp/vault/logical"
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"github.com/hashicorp/vault/logical/framework"
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)
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const (
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replTimeout = 10 * time.Second
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)
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var (
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// DefaultMaxRequestDuration is the amount of time we'll wait for a request
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// to complete, unless overridden on a per-handler basis
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DefaultMaxRequestDuration = 90 * time.Second
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)
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// HandlerProperties is used to seed configuration into a vaulthttp.Handler.
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// It's in this package to avoid a circular dependency
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type HandlerProperties struct {
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Core *Core
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MaxRequestSize int64
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MaxRequestDuration time.Duration
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DisablePrintableCheck bool
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}
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// fetchEntityAndDerivedPolicies returns the entity object for the given entity
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// ID. If the entity is merged into a different entity object, the entity into
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// which the given entity ID is merged into will be returned. This function
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// also returns the cumulative list of policies that the entity is entitled to.
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// This list includes the policies from the entity itself and from all the
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// groups in which the given entity ID is a member of.
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func (c *Core) fetchEntityAndDerivedPolicies(entityID string) (*identity.Entity, []string, error) {
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if entityID == "" || c.identityStore == nil {
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return nil, nil, nil
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}
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//c.logger.Debug("entity set on the token", "entity_id", te.EntityID)
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// Fetch the entity
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entity, err := c.identityStore.MemDBEntityByID(entityID, false)
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if err != nil {
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c.logger.Error("failed to lookup entity using its ID", "error", err)
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return nil, nil, err
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}
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if entity == nil {
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// If there was no corresponding entity object found, it is
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// possible that the entity got merged into another entity. Try
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// finding entity based on the merged entity index.
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entity, err = c.identityStore.MemDBEntityByMergedEntityID(entityID, false)
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if err != nil {
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c.logger.Error("failed to lookup entity in merged entity ID index", "error", err)
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return nil, nil, err
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}
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}
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var policies []string
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if entity != nil {
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//c.logger.Debug("entity successfully fetched; adding entity policies to token's policies to create ACL")
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// Attach the policies on the entity
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policies = append(policies, entity.Policies...)
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groupPolicies, err := c.identityStore.groupPoliciesByEntityID(entity.ID)
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if err != nil {
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c.logger.Error("failed to fetch group policies", "error", err)
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return nil, nil, err
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}
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// Attach the policies from all the groups
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policies = append(policies, groupPolicies...)
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}
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return entity, policies, err
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}
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func (c *Core) fetchACLTokenEntryAndEntity(req *logical.Request) (*ACL, *logical.TokenEntry, *identity.Entity, []string, error) {
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defer metrics.MeasureSince([]string{"core", "fetch_acl_and_token"}, time.Now())
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// Ensure there is a client token
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if req.ClientToken == "" {
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return nil, nil, nil, nil, fmt.Errorf("missing client token")
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}
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if c.tokenStore == nil {
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c.logger.Error("token store is unavailable")
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return nil, nil, nil, nil, ErrInternalError
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}
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// Resolve the token policy
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var te *logical.TokenEntry
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switch req.TokenEntry() {
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case nil:
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var err error
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te, err = c.tokenStore.Lookup(c.activeContext, req.ClientToken)
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if err != nil {
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c.logger.Error("failed to lookup token", "error", err)
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return nil, nil, nil, nil, ErrInternalError
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}
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default:
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te = req.TokenEntry()
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}
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// Ensure the token is valid
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if te == nil {
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return nil, nil, nil, nil, logical.ErrPermissionDenied
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}
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// CIDR checks bind all tokens except non-expiring root tokens
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if te.TTL != 0 && len(te.BoundCIDRs) > 0 {
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var valid bool
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remoteSockAddr, err := sockaddr.NewSockAddr(req.Connection.RemoteAddr)
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if err != nil {
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if c.Logger().IsDebug() {
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c.Logger().Debug("could not parse remote addr into sockaddr", "error", err, "remote_addr", req.Connection.RemoteAddr)
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}
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return nil, nil, nil, nil, logical.ErrPermissionDenied
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}
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for _, cidr := range te.BoundCIDRs {
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if cidr.Contains(remoteSockAddr) {
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valid = true
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break
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}
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}
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if !valid {
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return nil, nil, nil, nil, logical.ErrPermissionDenied
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}
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}
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entity, identityPolicies, err := c.fetchEntityAndDerivedPolicies(te.EntityID)
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if err != nil {
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return nil, nil, nil, nil, ErrInternalError
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}
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allPolicies := append(te.Policies, identityPolicies...)
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// Construct the corresponding ACL object
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acl, err := c.policyStore.ACL(c.activeContext, allPolicies...)
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if err != nil {
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c.logger.Error("failed to construct ACL", "error", err)
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return nil, nil, nil, nil, ErrInternalError
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}
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return acl, te, entity, identityPolicies, nil
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}
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func (c *Core) checkToken(ctx context.Context, req *logical.Request, unauth bool) (*logical.Auth, *logical.TokenEntry, error) {
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defer metrics.MeasureSince([]string{"core", "check_token"}, time.Now())
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var acl *ACL
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var te *logical.TokenEntry
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var entity *identity.Entity
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var identityPolicies []string
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var err error
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// Even if unauth, if a token is provided, there's little reason not to
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// gather as much info as possible for the audit log and to e.g. control
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// trace mode for EGPs.
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if !unauth || (unauth && req.ClientToken != "") {
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acl, te, entity, identityPolicies, err = c.fetchACLTokenEntryAndEntity(req)
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// In the unauth case we don't want to fail the command, since it's
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// unauth, we just have no information to attach to the request, so
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// ignore errors...this was best-effort anyways
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if err != nil && !unauth {
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return nil, te, err
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}
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}
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if entity != nil && entity.Disabled {
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c.logger.Warn("permission denied as the entity on the token is disabled")
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return nil, te, logical.ErrPermissionDenied
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}
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if te != nil && te.EntityID != "" && entity == nil {
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c.logger.Warn("permission denied as the entity on the token is invalid")
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return nil, te, logical.ErrPermissionDenied
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}
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// Check if this is a root protected path
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rootPath := c.router.RootPath(req.Path)
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if rootPath && unauth {
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return nil, nil, errors.New("cannot access root path in unauthenticated request")
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}
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// When we receive a write of either type, rather than require clients to
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// PUT/POST and trust the operation, we ask the backend to give us the real
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// skinny -- if the backend implements an existence check, it can tell us
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// whether a particular resource exists. Then we can mark it as an update
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// or creation as appropriate.
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if req.Operation == logical.CreateOperation || req.Operation == logical.UpdateOperation {
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checkExists, resourceExists, err := c.router.RouteExistenceCheck(ctx, req)
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switch err {
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case logical.ErrUnsupportedPath:
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// fail later via bad path to avoid confusing items in the log
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checkExists = false
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case nil:
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// Continue on
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default:
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c.logger.Error("failed to run existence check", "error", err)
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if _, ok := err.(errutil.UserError); ok {
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return nil, nil, err
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} else {
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return nil, nil, ErrInternalError
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}
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}
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switch {
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case checkExists == false:
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// No existence check, so always treat it as an update operation, which is how it is pre 0.5
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req.Operation = logical.UpdateOperation
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case resourceExists == true:
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// It exists, so force an update operation
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req.Operation = logical.UpdateOperation
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case resourceExists == false:
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// It doesn't exist, force a create operation
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req.Operation = logical.CreateOperation
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default:
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panic("unreachable code")
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}
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}
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// Create the auth response
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auth := &logical.Auth{
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ClientToken: req.ClientToken,
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Accessor: req.ClientTokenAccessor,
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Policies: identityPolicies,
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IdentityPolicies: identityPolicies,
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}
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if te != nil {
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auth.TokenPolicies = te.Policies
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auth.Policies = append(te.Policies, identityPolicies...)
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auth.Metadata = te.Meta
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auth.DisplayName = te.DisplayName
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auth.EntityID = te.EntityID
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// Store the entity ID in the request object
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req.EntityID = te.EntityID
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}
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// Check the standard non-root ACLs. Return the token entry if it's not
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// allowed so we can decrement the use count.
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authResults := c.performPolicyChecks(ctx, acl, te, req, entity, &PolicyCheckOpts{
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Unauth: unauth,
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RootPrivsRequired: rootPath,
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})
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if authResults.Error.ErrorOrNil() != nil {
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return auth, te, authResults.Error
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}
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if !authResults.Allowed {
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// Return auth for audit logging even if not allowed
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return auth, te, logical.ErrPermissionDenied
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}
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return auth, te, nil
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}
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// HandleRequest is used to handle a new incoming request
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func (c *Core) HandleRequest(httpCtx context.Context, req *logical.Request) (resp *logical.Response, err error) {
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c.stateLock.RLock()
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defer c.stateLock.RUnlock()
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if c.Sealed() {
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return nil, consts.ErrSealed
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}
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if c.standby {
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return nil, consts.ErrStandby
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}
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ctx, cancel := context.WithCancel(c.activeContext)
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defer cancel()
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go func() {
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select {
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case <-ctx.Done():
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case <-httpCtx.Done():
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cancel()
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}
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}()
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// Allowing writing to a path ending in / makes it extremely difficult to
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// understand user intent for the filesystem-like backends (kv,
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// cubbyhole) -- did they want a key named foo/ or did they want to write
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// to a directory foo/ with no (or forgotten) key, or...? It also affects
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// lookup, because paths ending in / are considered prefixes by some
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// backends. Basically, it's all just terrible, so don't allow it.
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if strings.HasSuffix(req.Path, "/") &&
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(req.Operation == logical.UpdateOperation ||
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req.Operation == logical.CreateOperation) {
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return logical.ErrorResponse("cannot write to a path ending in '/'"), nil
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}
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var auth *logical.Auth
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if c.router.LoginPath(req.Path) {
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resp, auth, err = c.handleLoginRequest(ctx, req)
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} else {
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resp, auth, err = c.handleRequest(ctx, req)
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}
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// Ensure we don't leak internal data
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if resp != nil {
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if resp.Secret != nil {
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resp.Secret.InternalData = nil
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}
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if resp.Auth != nil {
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resp.Auth.InternalData = nil
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}
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}
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// We are wrapping if there is anything to wrap (not a nil response) and a
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// TTL was specified for the token. Errors on a call should be returned to
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// the caller, so wrapping is turned off if an error is hit and the error
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// is logged to the audit log.
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wrapping := resp != nil &&
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err == nil &&
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!resp.IsError() &&
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resp.WrapInfo != nil &&
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resp.WrapInfo.TTL != 0 &&
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resp.WrapInfo.Token == ""
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if wrapping {
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cubbyResp, cubbyErr := c.wrapInCubbyhole(ctx, req, resp, auth)
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// If not successful, returns either an error response from the
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// cubbyhole backend or an error; if either is set, set resp and err to
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// those and continue so that that's what we audit log. Otherwise
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// finish the wrapping and audit log that.
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if cubbyResp != nil || cubbyErr != nil {
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resp = cubbyResp
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err = cubbyErr
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} else {
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wrappingResp := &logical.Response{
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WrapInfo: resp.WrapInfo,
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Warnings: resp.Warnings,
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}
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resp = wrappingResp
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}
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}
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auditResp := resp
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// When unwrapping we want to log the actual response that will be written
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// out. We still want to return the raw value to avoid automatic updating
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// to any of it.
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if req.Path == "sys/wrapping/unwrap" &&
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resp != nil &&
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resp.Data != nil &&
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resp.Data[logical.HTTPRawBody] != nil {
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// Decode the JSON
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if resp.Data[logical.HTTPRawBodyAlreadyJSONDecoded] != nil {
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delete(resp.Data, logical.HTTPRawBodyAlreadyJSONDecoded)
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} else {
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httpResp := &logical.HTTPResponse{}
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err := jsonutil.DecodeJSON(resp.Data[logical.HTTPRawBody].([]byte), httpResp)
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if err != nil {
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c.logger.Error("failed to unmarshal wrapped HTTP response for audit logging", "error", err)
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return nil, ErrInternalError
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}
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auditResp = logical.HTTPResponseToLogicalResponse(httpResp)
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}
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}
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var nonHMACReqDataKeys []string
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var nonHMACRespDataKeys []string
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entry := c.router.MatchingMountEntry(req.Path)
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if entry != nil {
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// Get and set ignored HMAC'd value. Reset those back to empty afterwards.
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if rawVals, ok := entry.synthesizedConfigCache.Load("audit_non_hmac_request_keys"); ok {
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nonHMACReqDataKeys = rawVals.([]string)
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}
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// Get and set ignored HMAC'd value. Reset those back to empty afterwards.
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if auditResp != nil {
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if rawVals, ok := entry.synthesizedConfigCache.Load("audit_non_hmac_response_keys"); ok {
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nonHMACRespDataKeys = rawVals.([]string)
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}
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}
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}
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// Create an audit trail of the response
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logInput := &audit.LogInput{
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Auth: auth,
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Request: req,
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Response: auditResp,
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OuterErr: err,
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NonHMACReqDataKeys: nonHMACReqDataKeys,
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NonHMACRespDataKeys: nonHMACRespDataKeys,
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}
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if auditErr := c.auditBroker.LogResponse(ctx, logInput, c.auditedHeaders); auditErr != nil {
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c.logger.Error("failed to audit response", "request_path", req.Path, "error", auditErr)
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return nil, ErrInternalError
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}
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return
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}
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func (c *Core) handleRequest(ctx context.Context, req *logical.Request) (retResp *logical.Response, retAuth *logical.Auth, retErr error) {
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defer metrics.MeasureSince([]string{"core", "handle_request"}, time.Now())
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var nonHMACReqDataKeys []string
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entry := c.router.MatchingMountEntry(req.Path)
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if entry != nil {
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// Get and set ignored HMAC'd value.
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if rawVals, ok := entry.synthesizedConfigCache.Load("audit_non_hmac_request_keys"); ok {
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nonHMACReqDataKeys = rawVals.([]string)
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}
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}
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// Validate the token
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auth, te, ctErr := c.checkToken(ctx, req, false)
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// We run this logic first because we want to decrement the use count even in the case of an error
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if te != nil {
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// Attempt to use the token (decrement NumUses)
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var err error
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te, err = c.tokenStore.UseToken(ctx, te)
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if err != nil {
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c.logger.Error("failed to use token", "error", err)
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retErr = multierror.Append(retErr, ErrInternalError)
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return nil, nil, retErr
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}
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if te == nil {
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// Token has been revoked by this point
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retErr = multierror.Append(retErr, logical.ErrPermissionDenied)
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return nil, nil, retErr
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}
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if te.NumUses == tokenRevocationPending {
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// We defer a revocation until after logic has run, since this is a
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// valid request (this is the token's final use). We pass the ID in
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// directly just to be safe in case something else modifies te later.
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defer func(id string) {
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leaseID, err := c.expiration.CreateOrFetchRevocationLeaseByToken(c.activeContext, te)
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if err == nil {
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err = c.expiration.LazyRevoke(ctx, leaseID)
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}
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if err != nil {
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c.logger.Error("failed to revoke token", "error", err)
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retResp = nil
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retAuth = nil
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retErr = multierror.Append(retErr, ErrInternalError)
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}
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if retResp != nil && retResp.Secret != nil &&
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// Some backends return a TTL even without a Lease ID
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retResp.Secret.LeaseID != "" {
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retResp = logical.ErrorResponse("Secret cannot be returned; token had one use left, so leased credentials were immediately revoked.")
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return
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}
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}(te.ID)
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}
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}
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if ctErr != nil {
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// If it is an internal error we return that, otherwise we
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// return invalid request so that the status codes can be correct
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errType := logical.ErrInvalidRequest
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switch ctErr {
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case ErrInternalError, logical.ErrPermissionDenied:
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errType = ctErr
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}
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logInput := &audit.LogInput{
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Auth: auth,
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Request: req,
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OuterErr: ctErr,
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NonHMACReqDataKeys: nonHMACReqDataKeys,
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}
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if err := c.auditBroker.LogRequest(ctx, logInput, c.auditedHeaders); err != nil {
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c.logger.Error("failed to audit request", "path", req.Path, "error", err)
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}
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if errType != nil {
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retErr = multierror.Append(retErr, errType)
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}
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if ctErr == ErrInternalError {
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return nil, auth, retErr
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}
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return logical.ErrorResponse(ctErr.Error()), auth, retErr
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}
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// Attach the display name
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req.DisplayName = auth.DisplayName
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// Create an audit trail of the request
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logInput := &audit.LogInput{
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Auth: auth,
|
|
Request: req,
|
|
NonHMACReqDataKeys: nonHMACReqDataKeys,
|
|
}
|
|
if err := c.auditBroker.LogRequest(ctx, logInput, c.auditedHeaders); err != nil {
|
|
c.logger.Error("failed to audit request", "path", req.Path, "error", err)
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
|
|
// Route the request
|
|
resp, routeErr := c.router.Route(ctx, req)
|
|
if resp != nil {
|
|
// If wrapping is used, use the shortest between the request and response
|
|
var wrapTTL time.Duration
|
|
var wrapFormat, creationPath string
|
|
var sealWrap bool
|
|
|
|
// Ensure no wrap info information is set other than, possibly, the TTL
|
|
if resp.WrapInfo != nil {
|
|
if resp.WrapInfo.TTL > 0 {
|
|
wrapTTL = resp.WrapInfo.TTL
|
|
}
|
|
wrapFormat = resp.WrapInfo.Format
|
|
creationPath = resp.WrapInfo.CreationPath
|
|
sealWrap = resp.WrapInfo.SealWrap
|
|
resp.WrapInfo = nil
|
|
}
|
|
|
|
if req.WrapInfo != nil {
|
|
if req.WrapInfo.TTL > 0 {
|
|
switch {
|
|
case wrapTTL == 0:
|
|
wrapTTL = req.WrapInfo.TTL
|
|
case req.WrapInfo.TTL < wrapTTL:
|
|
wrapTTL = req.WrapInfo.TTL
|
|
}
|
|
}
|
|
// If the wrap format hasn't been set by the response, set it to
|
|
// the request format
|
|
if req.WrapInfo.Format != "" && wrapFormat == "" {
|
|
wrapFormat = req.WrapInfo.Format
|
|
}
|
|
}
|
|
|
|
if wrapTTL > 0 {
|
|
resp.WrapInfo = &wrapping.ResponseWrapInfo{
|
|
TTL: wrapTTL,
|
|
Format: wrapFormat,
|
|
CreationPath: creationPath,
|
|
SealWrap: sealWrap,
|
|
}
|
|
}
|
|
}
|
|
|
|
// If there is a secret, we must register it with the expiration manager.
|
|
// We exclude renewal of a lease, since it does not need to be re-registered
|
|
if resp != nil && resp.Secret != nil && !strings.HasPrefix(req.Path, "sys/renew") &&
|
|
!strings.HasPrefix(req.Path, "sys/leases/renew") {
|
|
// KV mounts should return the TTL but not register
|
|
// for a lease as this provides a massive slowdown
|
|
registerLease := true
|
|
|
|
matchingMountEntry := c.router.MatchingMountEntry(req.Path)
|
|
if matchingMountEntry == nil {
|
|
c.logger.Error("unable to retrieve kv mount entry from router")
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
|
|
switch matchingMountEntry.Type {
|
|
case "kv", "generic":
|
|
// If we are kv type, first see if we are an older passthrough
|
|
// backend, and otherwise check the mount entry options.
|
|
matchingBackend := c.router.MatchingBackend(req.Path)
|
|
if matchingBackend == nil {
|
|
c.logger.Error("unable to retrieve kv backend from router")
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
|
|
if ptbe, ok := matchingBackend.(*PassthroughBackend); ok {
|
|
if !ptbe.GeneratesLeases() {
|
|
registerLease = false
|
|
resp.Secret.Renewable = false
|
|
}
|
|
} else if matchingMountEntry.Options == nil || matchingMountEntry.Options["leased_passthrough"] != "true" {
|
|
registerLease = false
|
|
resp.Secret.Renewable = false
|
|
}
|
|
|
|
case "plugin":
|
|
// If we are a plugin type and the plugin name is "kv" check the
|
|
// mount entry options.
|
|
if matchingMountEntry.Config.PluginName == "kv" && (matchingMountEntry.Options == nil || matchingMountEntry.Options["leased_passthrough"] != "true") {
|
|
registerLease = false
|
|
resp.Secret.Renewable = false
|
|
}
|
|
}
|
|
|
|
if registerLease {
|
|
sysView := c.router.MatchingSystemView(req.Path)
|
|
if sysView == nil {
|
|
c.logger.Error("unable to look up sys view for login path", "request_path", req.Path)
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
ttl, warnings, err := framework.CalculateTTL(sysView, 0, resp.Secret.TTL, 0, resp.Secret.MaxTTL, 0, time.Time{})
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
for _, warning := range warnings {
|
|
resp.AddWarning(warning)
|
|
}
|
|
resp.Secret.TTL = ttl
|
|
|
|
leaseID, err := c.expiration.Register(ctx, req, resp)
|
|
if err != nil {
|
|
c.logger.Error("failed to register lease", "request_path", req.Path, "error", err)
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
resp.Secret.LeaseID = leaseID
|
|
}
|
|
}
|
|
|
|
// If the request was to renew a token, and if there are group aliases set
|
|
// in the auth object, then the group memberships should be refreshed
|
|
if strings.HasPrefix(req.Path, "auth/token/renew") &&
|
|
resp != nil &&
|
|
resp.Auth != nil &&
|
|
resp.Auth.EntityID != "" &&
|
|
resp.Auth.GroupAliases != nil &&
|
|
c.identityStore != nil {
|
|
err := c.identityStore.refreshExternalGroupMembershipsByEntityID(resp.Auth.EntityID, resp.Auth.GroupAliases)
|
|
if err != nil {
|
|
c.logger.Error("failed to refresh external group memberships", "error", err)
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
}
|
|
|
|
// Only the token store is allowed to return an auth block, for any
|
|
// other request this is an internal error. We exclude renewal of a token,
|
|
// since it does not need to be re-registered
|
|
if resp != nil && resp.Auth != nil && !strings.HasPrefix(req.Path, "auth/token/renew") {
|
|
if !strings.HasPrefix(req.Path, "auth/token/") {
|
|
c.logger.Error("unexpected Auth response for non-token backend", "request_path", req.Path)
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
|
|
_, identityPolicies, err := c.fetchEntityAndDerivedPolicies(resp.Auth.EntityID)
|
|
if err != nil {
|
|
c.tokenStore.revokeOrphan(ctx, te.ID)
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
resp.Auth.TokenPolicies = policyutil.SanitizePolicies(resp.Auth.Policies, policyutil.DoNotAddDefaultPolicy)
|
|
if err := c.expiration.RegisterAuth(ctx, resp.Auth.CreationPath, resp.Auth); err != nil {
|
|
c.tokenStore.revokeOrphan(ctx, te.ID)
|
|
c.logger.Error("failed to register token lease", "request_path", req.Path, "error", err)
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
|
|
// We do these later since it's not meaningful for backends/expmgr to
|
|
// have what is purely a snapshot of current identity policies, and
|
|
// plugins can be confused if they are checking contents of
|
|
// Auth.Policies instead of Auth.TokenPolicies
|
|
resp.Auth.IdentityPolicies = policyutil.SanitizePolicies(identityPolicies, policyutil.DoNotAddDefaultPolicy)
|
|
resp.Auth.Policies = policyutil.SanitizePolicies(append(resp.Auth.Policies, identityPolicies...), policyutil.DoNotAddDefaultPolicy)
|
|
}
|
|
|
|
if resp != nil &&
|
|
req.Path == "cubbyhole/response" &&
|
|
len(te.Policies) == 1 &&
|
|
te.Policies[0] == responseWrappingPolicyName {
|
|
resp.AddWarning("Reading from 'cubbyhole/response' is deprecated. Please use sys/wrapping/unwrap to unwrap responses, as it provides additional security checks and other benefits.")
|
|
}
|
|
|
|
// Return the response and error
|
|
if routeErr != nil {
|
|
retErr = multierror.Append(retErr, routeErr)
|
|
}
|
|
|
|
return resp, auth, retErr
|
|
}
|
|
|
|
// handleLoginRequest is used to handle a login request, which is an
|
|
// unauthenticated request to the backend.
|
|
func (c *Core) handleLoginRequest(ctx context.Context, req *logical.Request) (retResp *logical.Response, retAuth *logical.Auth, retErr error) {
|
|
defer metrics.MeasureSince([]string{"core", "handle_login_request"}, time.Now())
|
|
|
|
req.Unauthenticated = true
|
|
|
|
var auth *logical.Auth
|
|
// Create an audit trail of the request, auth is not available on login requests
|
|
// Create an audit trail of the request. Attach auth if it was returned,
|
|
// e.g. if a token was provided.
|
|
logInput := &audit.LogInput{
|
|
Auth: auth,
|
|
Request: req,
|
|
}
|
|
if err := c.auditBroker.LogRequest(ctx, logInput, c.auditedHeaders); err != nil {
|
|
c.logger.Error("failed to audit request", "path", req.Path, "error", err)
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
// The token store uses authentication even when creating a new token,
|
|
// so it's handled in handleRequest. It should not be reached here.
|
|
if strings.HasPrefix(req.Path, "auth/token/") {
|
|
c.logger.Error("unexpected login request for token backend", "request_path", req.Path)
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
// Route the request
|
|
resp, routeErr := c.router.Route(ctx, req)
|
|
if resp != nil {
|
|
// If wrapping is used, use the shortest between the request and response
|
|
var wrapTTL time.Duration
|
|
var wrapFormat, creationPath string
|
|
var sealWrap bool
|
|
|
|
// Ensure no wrap info information is set other than, possibly, the TTL
|
|
if resp.WrapInfo != nil {
|
|
if resp.WrapInfo.TTL > 0 {
|
|
wrapTTL = resp.WrapInfo.TTL
|
|
}
|
|
wrapFormat = resp.WrapInfo.Format
|
|
creationPath = resp.WrapInfo.CreationPath
|
|
sealWrap = resp.WrapInfo.SealWrap
|
|
resp.WrapInfo = nil
|
|
}
|
|
|
|
if req.WrapInfo != nil {
|
|
if req.WrapInfo.TTL > 0 {
|
|
switch {
|
|
case wrapTTL == 0:
|
|
wrapTTL = req.WrapInfo.TTL
|
|
case req.WrapInfo.TTL < wrapTTL:
|
|
wrapTTL = req.WrapInfo.TTL
|
|
}
|
|
}
|
|
if req.WrapInfo.Format != "" && wrapFormat == "" {
|
|
wrapFormat = req.WrapInfo.Format
|
|
}
|
|
}
|
|
|
|
if wrapTTL > 0 {
|
|
resp.WrapInfo = &wrapping.ResponseWrapInfo{
|
|
TTL: wrapTTL,
|
|
Format: wrapFormat,
|
|
CreationPath: creationPath,
|
|
SealWrap: sealWrap,
|
|
}
|
|
}
|
|
}
|
|
|
|
// A login request should never return a secret!
|
|
if resp != nil && resp.Secret != nil {
|
|
c.logger.Error("unexpected Secret response for login path", "request_path", req.Path)
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
// If the response generated an authentication, then generate the token
|
|
if resp != nil && resp.Auth != nil {
|
|
|
|
var entity *identity.Entity
|
|
auth = resp.Auth
|
|
|
|
mEntry := c.router.MatchingMountEntry(req.Path)
|
|
|
|
if auth.Alias != nil &&
|
|
mEntry != nil &&
|
|
!mEntry.Local &&
|
|
c.identityStore != nil {
|
|
// Overwrite the mount type and mount path in the alias
|
|
// information
|
|
auth.Alias.MountType = req.MountType
|
|
auth.Alias.MountAccessor = req.MountAccessor
|
|
|
|
if auth.Alias.Name == "" {
|
|
return nil, nil, fmt.Errorf("missing name in alias")
|
|
}
|
|
|
|
var err error
|
|
|
|
// Fetch the entity for the alias, or create an entity if one
|
|
// doesn't exist.
|
|
entity, err = c.identityStore.CreateOrFetchEntity(auth.Alias)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
if entity == nil {
|
|
return nil, nil, fmt.Errorf("failed to create an entity for the authenticated alias")
|
|
}
|
|
|
|
if entity.Disabled {
|
|
return nil, nil, logical.ErrPermissionDenied
|
|
}
|
|
|
|
auth.EntityID = entity.ID
|
|
if auth.GroupAliases != nil {
|
|
err = c.identityStore.refreshExternalGroupMembershipsByEntityID(auth.EntityID, auth.GroupAliases)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
}
|
|
}
|
|
|
|
// Determine the source of the login
|
|
source := c.router.MatchingMount(req.Path)
|
|
source = strings.TrimPrefix(source, credentialRoutePrefix)
|
|
source = strings.Replace(source, "/", "-", -1)
|
|
|
|
// Prepend the source to the display name
|
|
auth.DisplayName = strings.TrimSuffix(source+auth.DisplayName, "-")
|
|
|
|
sysView := c.router.MatchingSystemView(req.Path)
|
|
if sysView == nil {
|
|
c.logger.Error("unable to look up sys view for login path", "request_path", req.Path)
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
tokenTTL, warnings, err := framework.CalculateTTL(sysView, 0, auth.TTL, auth.Period, auth.MaxTTL, auth.ExplicitMaxTTL, time.Time{})
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
for _, warning := range warnings {
|
|
resp.AddWarning(warning)
|
|
}
|
|
|
|
// We first assign token policies to what was returned from the backend
|
|
// via auth.Policies. Then, we get the full set of policies into
|
|
// auth.Policies from the backend + entity information -- this is not
|
|
// stored in the token, but we perform sanity checks on it and return
|
|
// that information to the user.
|
|
|
|
// Generate a token
|
|
te := logical.TokenEntry{
|
|
Path: req.Path,
|
|
Meta: auth.Metadata,
|
|
DisplayName: auth.DisplayName,
|
|
CreationTime: time.Now().Unix(),
|
|
TTL: tokenTTL,
|
|
NumUses: auth.NumUses,
|
|
EntityID: auth.EntityID,
|
|
BoundCIDRs: auth.BoundCIDRs,
|
|
}
|
|
|
|
te.Policies = policyutil.SanitizePolicies(auth.Policies, policyutil.AddDefaultPolicy)
|
|
|
|
_, identityPolicies, err := c.fetchEntityAndDerivedPolicies(auth.EntityID)
|
|
if err != nil {
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
auth.TokenPolicies = te.Policies
|
|
allPolicies := policyutil.SanitizePolicies(append(te.Policies, identityPolicies...), policyutil.DoNotAddDefaultPolicy)
|
|
|
|
// Prevent internal policies from being assigned to tokens. We check
|
|
// this on auth.Policies including derived ones from Identity before
|
|
// actually making the token.
|
|
for _, policy := range allPolicies {
|
|
if policy == "root" {
|
|
return logical.ErrorResponse("auth methods cannot create root tokens"), nil, logical.ErrInvalidRequest
|
|
}
|
|
if strutil.StrListContains(nonAssignablePolicies, policy) {
|
|
return logical.ErrorResponse(fmt.Sprintf("cannot assign policy %q", policy)), nil, logical.ErrInvalidRequest
|
|
}
|
|
}
|
|
|
|
if err := c.tokenStore.create(ctx, &te); err != nil {
|
|
c.logger.Error("failed to create token", "error", err)
|
|
return nil, auth, ErrInternalError
|
|
}
|
|
|
|
// Populate the client token, accessor, and TTL
|
|
auth.ClientToken = te.ID
|
|
auth.Accessor = te.Accessor
|
|
auth.TTL = te.TTL
|
|
|
|
// Register with the expiration manager
|
|
if err := c.expiration.RegisterAuth(ctx, te.Path, auth); err != nil {
|
|
c.tokenStore.revokeOrphan(ctx, te.ID)
|
|
c.logger.Error("failed to register token lease", "request_path", req.Path, "error", err)
|
|
return nil, auth, ErrInternalError
|
|
}
|
|
|
|
auth.IdentityPolicies = policyutil.SanitizePolicies(identityPolicies, policyutil.DoNotAddDefaultPolicy)
|
|
auth.Policies = allPolicies
|
|
|
|
// Attach the display name, might be used by audit backends
|
|
req.DisplayName = auth.DisplayName
|
|
}
|
|
|
|
return resp, auth, routeErr
|
|
}
|