// handleLoginRequest is used to handle a login request, which is an
// unauthenticated request to the backend.
func (c *Core) handleLoginRequest(req *logical.Request) (*logical.Response, *logical.Auth, error) {
defer metrics.MeasureSince([]string{"core", "handle_login_request"}, time.Now())
// Create an audit trail of the request, auth is not available on login requests
if err := c.auditBroker.LogRequest(nil, req, nil); err != nil {
c.logger.Printf("[ERR] core: failed to audit request with path %s: %v",
req.Path, err)
return nil, nil, ErrInternalError
}
// Route the request
resp, err := c.router.Route(req)
// A login request should never return a secret!
if resp != nil && resp.Secret != nil {
c.logger.Printf("[ERR] core: unexpected Secret response for login path"+
"(request path: %s)", req.Path)
return nil, nil, ErrInternalError
}
// If the response generated an authentication, then generate the token
var auth *logical.Auth
if resp != nil && resp.Auth != nil {
auth = resp.Auth
// 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.Printf("[ERR] core: unable to look up sys view for login path"+
"(request path: %s)", req.Path)
return nil, nil, ErrInternalError
}
// Set the default lease if non-provided, root tokens are exempt
if auth.TTL == 0 && !strutil.StrListContains(auth.Policies, "root") {
auth.TTL = sysView.DefaultLeaseTTL()
}
// Limit the lease duration
if auth.TTL > sysView.MaxLeaseTTL() {
auth.TTL = sysView.MaxLeaseTTL()
}
// Generate a token
te := TokenEntry{
Path: req.Path,
Policies: auth.Policies,
Meta: auth.Metadata,
DisplayName: auth.DisplayName,
CreationTime: time.Now().Unix(),
TTL: auth.TTL,
}
if strutil.StrListSubset(te.Policies, []string{"root"}) {
te.Policies = []string{"root"}
} else {
// Use a map to filter out/prevent duplicates
policyMap := map[string]bool{}
for _, policy := range te.Policies {
if policy == "" {
// Don't allow a policy with no name, even though it is a valid
// slice member
continue
}
policyMap[policy] = true
}
// Add the default policy
policyMap["default"] = true
te.Policies = []string{}
for k, _ := range policyMap {
te.Policies = append(te.Policies, k)
}
sort.Strings(te.Policies)
}
if err := c.tokenStore.create(&te); err != nil {
c.logger.Printf("[ERR] core: failed to create token: %v", err)
return nil, auth, ErrInternalError
}
// Populate the client token and accessor
auth.ClientToken = te.ID
auth.Accessor = te.Accessor
auth.Policies = te.Policies
// Register with the expiration manager
if err := c.expiration.RegisterAuth(te.Path, auth); err != nil {
c.logger.Printf("[ERR] core: failed to register token lease "+
"(request path: %s): %v", req.Path, err)
return nil, auth, ErrInternalError
}
// Attach the display name, might be used by audit backends
req.DisplayName = auth.DisplayName
}
return resp, auth, err
}
func (f *AuditFormatter) FormatResponse(
w io.Writer,
config FormatterConfig,
auth *logical.Auth,
req *logical.Request,
resp *logical.Response,
err error) error {
if w == nil {
return fmt.Errorf("writer for audit request is nil")
}
if f.AuditFormatWriter == nil {
return fmt.Errorf("no format writer specified")
}
if !config.Raw {
// Before we copy the structure we must nil out some data
// otherwise we will cause reflection to panic and die
if req.Connection != nil && req.Connection.ConnState != nil {
origReq := req
origState := req.Connection.ConnState
req.Connection.ConnState = nil
defer func() {
origReq.Connection.ConnState = origState
}()
}
// Copy the structure
cp, err := copystructure.Copy(auth)
if err != nil {
return err
}
auth = cp.(*logical.Auth)
cp, err = copystructure.Copy(req)
if err != nil {
return err
}
req = cp.(*logical.Request)
cp, err = copystructure.Copy(resp)
if err != nil {
return err
}
resp = cp.(*logical.Response)
// Hash any sensitive information
// Cache and restore accessor in the auth
var accessor, wrappedAccessor string
if !config.HMACAccessor && auth != nil && auth.Accessor != "" {
accessor = auth.Accessor
}
if err := Hash(config.Salt, auth); err != nil {
return err
}
if accessor != "" {
auth.Accessor = accessor
}
if err := Hash(config.Salt, req); err != nil {
return err
}
// Cache and restore accessor in the response
accessor = ""
if !config.HMACAccessor && resp != nil && resp.Auth != nil && resp.Auth.Accessor != "" {
accessor = resp.Auth.Accessor
}
if !config.HMACAccessor && resp != nil && resp.WrapInfo != nil && resp.WrapInfo.WrappedAccessor != "" {
wrappedAccessor = resp.WrapInfo.WrappedAccessor
}
if err := Hash(config.Salt, resp); err != nil {
return err
}
if accessor != "" {
resp.Auth.Accessor = accessor
}
if wrappedAccessor != "" {
resp.WrapInfo.WrappedAccessor = wrappedAccessor
}
}
// If things are nil, make empty to avoid panics
if auth == nil {
auth = new(logical.Auth)
}
if resp == nil {
resp = new(logical.Response)
}
var errString string
if err != nil {
errString = err.Error()
}
var respAuth *AuditAuth
if resp.Auth != nil {
respAuth = &AuditAuth{
ClientToken: resp.Auth.ClientToken,
Accessor: resp.Auth.Accessor,
DisplayName: resp.Auth.DisplayName,
Policies: resp.Auth.Policies,
Metadata: resp.Auth.Metadata,
}
}
var respSecret *AuditSecret
if resp.Secret != nil {
respSecret = &AuditSecret{
LeaseID: resp.Secret.LeaseID,
}
}
var respWrapInfo *AuditWrapInfo
if resp.WrapInfo != nil {
respWrapInfo = &AuditWrapInfo{
TTL: int(resp.WrapInfo.TTL / time.Second),
Token: resp.WrapInfo.Token,
CreationTime: resp.WrapInfo.CreationTime.Format(time.RFC3339Nano),
WrappedAccessor: resp.WrapInfo.WrappedAccessor,
}
}
respEntry := &AuditResponseEntry{
Type: "response",
Error: errString,
Auth: AuditAuth{
DisplayName: auth.DisplayName,
Policies: auth.Policies,
Metadata: auth.Metadata,
},
Request: AuditRequest{
ID: req.ID,
ClientToken: req.ClientToken,
Operation: req.Operation,
Path: req.Path,
Data: req.Data,
RemoteAddr: getRemoteAddr(req),
WrapTTL: int(req.WrapTTL / time.Second),
},
Response: AuditResponse{
Auth: respAuth,
Secret: respSecret,
Data: resp.Data,
Redirect: resp.Redirect,
WrapInfo: respWrapInfo,
},
}
if !config.OmitTime {
respEntry.Time = time.Now().UTC().Format(time.RFC3339)
}
return f.AuditFormatWriter.WriteResponse(w, respEntry)
}
// handleLoginRequest is used to handle a login request, which is an
// unauthenticated request to the backend.
func (c *Core) handleLoginRequest(req *logical.Request) (*logical.Response, *logical.Auth, error) {
defer metrics.MeasureSince([]string{"core", "handle_login_request"}, time.Now())
// Create an audit trail of the request, auth is not available on login requests
if err := c.auditBroker.LogRequest(nil, req, nil); err != nil {
c.logger.Error("core: 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("core: unexpected login request for token backend", "request_path", req.Path)
return nil, nil, ErrInternalError
}
// Route the request
resp, err := c.router.Route(req)
if resp != nil {
// We don't allow backends to specify this, so ensure it's not set
resp.WrapInfo = nil
if req.WrapTTL != 0 {
resp.WrapInfo = &logical.WrapInfo{
TTL: req.WrapTTL,
}
}
}
// A login request should never return a secret!
if resp != nil && resp.Secret != nil {
c.logger.Error("core: unexpected Secret response for login path", "request_path", req.Path)
return nil, nil, ErrInternalError
}
// If the response generated an authentication, then generate the token
var auth *logical.Auth
if resp != nil && resp.Auth != nil {
auth = resp.Auth
if strutil.StrListSubset(auth.Policies, []string{"root"}) {
return logical.ErrorResponse("authentication backends cannot create root tokens"), nil, logical.ErrInvalidRequest
}
// 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("core: unable to look up sys view for login path", "request_path", req.Path)
return nil, nil, ErrInternalError
}
// Set the default lease if not provided
if auth.TTL == 0 {
auth.TTL = sysView.DefaultLeaseTTL()
}
// Limit the lease duration
if auth.TTL > sysView.MaxLeaseTTL() {
auth.TTL = sysView.MaxLeaseTTL()
}
// Generate a token
te := TokenEntry{
Path: req.Path,
Policies: auth.Policies,
Meta: auth.Metadata,
DisplayName: auth.DisplayName,
CreationTime: time.Now().Unix(),
TTL: auth.TTL,
}
te.Policies = policyutil.SanitizePolicies(te.Policies, true)
// Prevent internal policies from being assigned to tokens
for _, policy := range te.Policies {
if strutil.StrListContains(nonAssignablePolicies, policy) {
return logical.ErrorResponse(fmt.Sprintf("cannot assign policy %q", policy)), nil, logical.ErrInvalidRequest
}
}
if err := c.tokenStore.create(&te); err != nil {
c.logger.Error("core: failed to create token", "error", err)
return nil, auth, ErrInternalError
}
// Populate the client token and accessor
auth.ClientToken = te.ID
auth.Accessor = te.Accessor
auth.Policies = te.Policies
// Register with the expiration manager
if err := c.expiration.RegisterAuth(te.Path, auth); err != nil {
c.logger.Error("core: failed to register token lease", "request_path", req.Path, "error", err)
return nil, auth, ErrInternalError
}
// Attach the display name, might be used by audit backends
req.DisplayName = auth.DisplayName
}
return resp, auth, err
}
func (b *Backend) LogResponse(
auth *logical.Auth,
req *logical.Request,
resp *logical.Response,
err error) error {
if err := b.open(); err != nil {
return err
}
if !b.logRaw {
// Before we copy the structure we must nil out some data
// otherwise we will cause reflection to panic and die
if req.Connection != nil && req.Connection.ConnState != nil {
origReq := req
origState := req.Connection.ConnState
req.Connection.ConnState = nil
defer func() {
origReq.Connection.ConnState = origState
}()
}
// Copy the structure
cp, err := copystructure.Copy(auth)
if err != nil {
return err
}
auth = cp.(*logical.Auth)
cp, err = copystructure.Copy(req)
if err != nil {
return err
}
req = cp.(*logical.Request)
cp, err = copystructure.Copy(resp)
if err != nil {
return err
}
resp = cp.(*logical.Response)
// Hash any sensitive information
// Cache and restore accessor in the auth
var accessor, wrappedAccessor string
if !b.hmacAccessor && auth != nil && auth.Accessor != "" {
accessor = auth.Accessor
}
if err := audit.Hash(b.salt, auth); err != nil {
return err
}
if accessor != "" {
auth.Accessor = accessor
}
if err := audit.Hash(b.salt, req); err != nil {
return err
}
// Cache and restore accessor in the response
accessor = ""
if !b.hmacAccessor && resp != nil && resp.Auth != nil && resp.Auth.Accessor != "" {
accessor = resp.Auth.Accessor
}
if !b.hmacAccessor && resp != nil && resp.WrapInfo != nil && resp.WrapInfo.WrappedAccessor != "" {
wrappedAccessor = resp.WrapInfo.WrappedAccessor
}
if err := audit.Hash(b.salt, resp); err != nil {
return err
}
if accessor != "" {
resp.Auth.Accessor = accessor
}
if wrappedAccessor != "" {
resp.WrapInfo.WrappedAccessor = wrappedAccessor
}
}
var format audit.FormatJSON
return format.FormatResponse(b.f, auth, req, resp, err)
}
func (b *Backend) LogResponse(auth *logical.Auth, req *logical.Request,
resp *logical.Response, err error) error {
if !b.logRaw {
// Before we copy the structure we must nil out some data
// otherwise we will cause reflection to panic and die
if req.Connection != nil && req.Connection.ConnState != nil {
origReq := req
origState := req.Connection.ConnState
req.Connection.ConnState = nil
defer func() {
origReq.Connection.ConnState = origState
}()
}
// Copy the structure
cp, err := copystructure.Copy(auth)
if err != nil {
return err
}
auth = cp.(*logical.Auth)
cp, err = copystructure.Copy(req)
if err != nil {
return err
}
req = cp.(*logical.Request)
cp, err = copystructure.Copy(resp)
if err != nil {
return err
}
resp = cp.(*logical.Response)
// Hash any sensitive information
// Cache and restore accessor in the auth
var accessor string
if !b.hmacAccessor && auth != nil && auth.Accessor != "" {
accessor = auth.Accessor
}
if err := audit.Hash(b.salt, auth); err != nil {
return err
}
if accessor != "" {
auth.Accessor = accessor
}
if err := audit.Hash(b.salt, req); err != nil {
return err
}
// Cache and restore accessor in the response
accessor = ""
if !b.hmacAccessor && resp != nil && resp.Auth != nil && resp.Auth.Accessor != "" {
accessor = resp.Auth.Accessor
}
if err := audit.Hash(b.salt, resp); err != nil {
return err
}
if accessor != "" {
resp.Auth.Accessor = accessor
}
}
// Encode the entry as JSON
var buf bytes.Buffer
var format audit.FormatJSON
if err := format.FormatResponse(&buf, auth, req, resp, err); err != nil {
return err
}
// Write otu to syslog
_, err = b.logger.Write(buf.Bytes())
return err
}