Commit 5582232a authored by Eric Chiang's avatar Eric Chiang Committed by GitHub

Merge pull request #1021 from ericchiang/debug-logs

*: add log events for login, LDAP queries, and SAML responses
parents c45185f6 aad328bb
......@@ -127,6 +127,19 @@ type Config struct {
} `json:"groupSearch"`
}
func scopeString(i int) string {
switch i {
case ldap.ScopeBaseObject:
return "base"
case ldap.ScopeSingleLevel:
return "one"
case ldap.ScopeWholeSubtree:
return "sub"
default:
return ""
}
}
func parseScope(s string) (int, bool) {
// NOTE(ericchiang): ScopeBaseObject doesn't really make sense for us because we
// never know the user's or group's DN.
......@@ -342,6 +355,9 @@ func (c *ldapConnector) userEntry(conn *ldap.Conn, username string) (user ldap.E
if c.UserSearch.NameAttr != "" {
req.Attributes = append(req.Attributes, c.UserSearch.NameAttr)
}
c.logger.Infof("performing ldap search %s %s %s",
req.BaseDN, scopeString(req.Scope), req.Filter)
resp, err := conn.Search(req)
if err != nil {
return ldap.Entry{}, false, fmt.Errorf("ldap: search with filter %q failed: %v", req.Filter, err)
......@@ -352,7 +368,9 @@ func (c *ldapConnector) userEntry(conn *ldap.Conn, username string) (user ldap.E
c.logger.Errorf("ldap: no results returned for filter: %q", filter)
return ldap.Entry{}, false, nil
case 1:
return *resp.Entries[0], true, nil
user = *resp.Entries[0]
c.logger.Infof("username %q mapped to entry %s", username, user.DN)
return user, true, nil
default:
return ldap.Entry{}, false, fmt.Errorf("ldap: filter returned multiple (%d) results: %q", n, filter)
}
......@@ -493,6 +511,8 @@ func (c *ldapConnector) groups(ctx context.Context, user ldap.Entry) ([]string,
gotGroups := false
if err := c.do(ctx, func(conn *ldap.Conn) error {
c.logger.Infof("performing ldap search %s %s %s",
req.BaseDN, scopeString(req.Scope), req.Filter)
resp, err := conn.Search(req)
if err != nil {
return fmt.Errorf("ldap: search failed: %v", err)
......
......@@ -366,6 +366,11 @@ func (p *provider) HandlePOST(s connector.Scopes, samlResponse, inResponseTo str
return ident, fmt.Errorf("response did not contain a AttributeStatement")
}
// Log the actual attributes we got back from the server. This helps debug
// configuration errors on the server side, where the SAML server doesn't
// send us the correct attributes.
p.logger.Infof("parsed and verified saml response attributes %s", attributes)
// Grab the email.
if ident.Email, _ = attributes.get(p.emailAttr); ident.Email == "" {
return ident, fmt.Errorf("no attribute with name %q: %s", p.emailAttr, attributes.names())
......
package saml
import (
"bytes"
"encoding/xml"
"fmt"
"time"
......@@ -233,6 +234,18 @@ func (a *attributeStatement) names() []string {
return s
}
// String is a formatter for logging an attribute statement's sub statements.
func (a *attributeStatement) String() string {
buff := new(bytes.Buffer)
for i, attr := range a.Attributes {
if i != 0 {
buff.WriteString(", ")
}
buff.WriteString(attr.String())
}
return buff.String()
}
type attribute struct {
XMLName xml.Name `xml:"urn:oasis:names:tc:SAML:2.0:assertion Attribute"`
......@@ -248,3 +261,17 @@ type attributeValue struct {
XMLName xml.Name `xml:"AttributeValue"`
Value string `xml:",chardata"`
}
func (a attribute) String() string {
if len(a.AttributeValues) == 1 {
// "email" = "jane.doe@coreos.com"
return fmt.Sprintf("%q = %q", a.Name, a.AttributeValues[0].Value)
}
values := make([]string, len(a.AttributeValues))
for i, av := range a.AttributeValues {
values[i] = av.Value
}
// "groups" = ["engineering", "docs"]
return fmt.Sprintf("%q = %q", a.Name, values)
}
......@@ -390,6 +390,8 @@ func (s *Server) handleConnectorCallback(w http.ResponseWriter, r *http.Request)
http.Redirect(w, r, redirectURL, http.StatusSeeOther)
}
// finalizeLogin associates the user's identity with the current AuthRequest, then returns
// the approval page's path.
func (s *Server) finalizeLogin(identity connector.Identity, authReq storage.AuthRequest, conn connector.Connector) (string, error) {
claims := storage.Claims{
UserID: identity.UserID,
......@@ -408,6 +410,15 @@ func (s *Server) finalizeLogin(identity connector.Identity, authReq storage.Auth
if err := s.storage.UpdateAuthRequest(authReq.ID, updater); err != nil {
return "", fmt.Errorf("failed to update auth request: %v", err)
}
email := claims.Email
if !claims.EmailVerified {
email = email + " (unverified)"
}
s.logger.Infof("login successful: connector %q, username=%q, email=%q, groups=%q",
authReq.ConnectorID, claims.Username, email, claims.Groups)
return path.Join(s.issuerURL.Path, "/approval") + "?req=" + authReq.ID, nil
}
......
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