ContainerImage.Pinniped/internal/upstreamad/upstreamad_test.go
2021-07-23 13:01:40 -07:00

1378 lines
56 KiB
Go

// Copyright 2021 the Pinniped contributors. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
package upstreamad
import (
"context"
"crypto/tls"
"encoding/base64"
"errors"
"fmt"
"net"
"net/http"
"net/url"
"testing"
"time"
"go.pinniped.dev/internal/upstreamldap"
"github.com/go-ldap/ldap/v3"
"github.com/golang/mock/gomock"
"github.com/stretchr/testify/require"
"k8s.io/apiserver/pkg/authentication/authenticator"
"k8s.io/apiserver/pkg/authentication/user"
"go.pinniped.dev/internal/certauthority"
"go.pinniped.dev/internal/endpointaddr"
"go.pinniped.dev/internal/mocks/mockldapconn"
"go.pinniped.dev/internal/testutil"
)
const (
testHost = "activedirectory.example.com:8443"
testBindUsername = "cn=some-bind-username,dc=pinniped,dc=dev"
testBindPassword = "some-bind-password"
testUpstreamUsername = "some-upstream-username"
testUpstreamPassword = "some-upstream-password"
testUserSearchBase = "some-upstream-user-base-dn"
testGroupSearchBase = "some-upstream-group-base-dn"
testUserSearchFilter = "some-user-filter={}-and-more-filter={}"
testGroupSearchFilter = "some-group-filter={}-and-more-filter={}"
testUserSearchUsernameAttribute = "some-upstream-username-attribute"
testUserSearchUIDAttribute = "objectGUID"
testGroupSearchGroupNameAttribute = "some-upstream-group-name-attribute"
testUserSearchResultDNValue = "some-upstream-user-dn"
testGroupSearchResultDNValue1 = "some-upstream-group-dn1"
testGroupSearchResultDNValue2 = "some-upstream-group-dn2"
testUserSearchResultUsernameAttributeValue = "some-upstream-username-value"
testUserSearchResultUIDAttributeValue = "Ej5FZ+ibEtOkVkJmFBdAAA==" // this is base64 encoded 123e4567-e89b-12d3-a456-426614174000
testGroupSearchResultGroupNameAttributeValue1 = "some-upstream-group-name-value1"
testGroupSearchResultGroupNameAttributeValue2 = "some-upstream-group-name-value2"
expectedGroupSearchPageSize = uint32(250)
)
var (
testUserSearchFilterInterpolated = fmt.Sprintf("(some-user-filter=%s-and-more-filter=%s)", testUpstreamUsername, testUpstreamUsername)
testGroupSearchFilterInterpolated = fmt.Sprintf("(some-group-filter=%s-and-more-filter=%s)", testUserSearchResultDNValue, testUserSearchResultDNValue)
)
func TestEndUserAuthentication(t *testing.T) {
providerConfig := func(editFunc func(p *upstreamldap.ProviderConfig)) *upstreamldap.ProviderConfig {
config := &upstreamldap.ProviderConfig{
Name: "some-provider-name",
Host: testHost,
CABundle: nil, // this field is only used by the production dialer, which is replaced by a mock for this test
ConnectionProtocol: upstreamldap.TLS,
BindUsername: testBindUsername,
BindPassword: testBindPassword,
UserSearch: upstreamldap.UserSearchConfig{
Base: testUserSearchBase,
Filter: testUserSearchFilter,
UsernameAttribute: testUserSearchUsernameAttribute,
UIDAttribute: testUserSearchUIDAttribute,
},
GroupSearch: upstreamldap.GroupSearchConfig{
Base: testGroupSearchBase,
Filter: testGroupSearchFilter,
GroupNameAttribute: testGroupSearchGroupNameAttribute,
},
}
if editFunc != nil {
editFunc(config)
}
return config
}
expectedUserSearch := func(editFunc func(r *ldap.SearchRequest)) *ldap.SearchRequest {
request := &ldap.SearchRequest{
BaseDN: testUserSearchBase,
Scope: ldap.ScopeWholeSubtree,
DerefAliases: ldap.NeverDerefAliases,
SizeLimit: 2,
TimeLimit: 90,
TypesOnly: false,
Filter: testUserSearchFilterInterpolated,
Attributes: []string{testUserSearchUsernameAttribute, testUserSearchUIDAttribute},
Controls: nil, // don't need paging because we set the SizeLimit so small
}
if editFunc != nil {
editFunc(request)
}
return request
}
expectedGroupSearch := func(editFunc func(r *ldap.SearchRequest)) *ldap.SearchRequest {
request := &ldap.SearchRequest{
BaseDN: testGroupSearchBase,
Scope: ldap.ScopeWholeSubtree,
DerefAliases: ldap.NeverDerefAliases,
SizeLimit: 0, // unlimited size because we will search with paging
TimeLimit: 90,
TypesOnly: false,
Filter: testGroupSearchFilterInterpolated,
Attributes: []string{testGroupSearchGroupNameAttribute},
Controls: nil, // nil because ldap.SearchWithPaging() will set the appropriate controls for us
}
if editFunc != nil {
editFunc(request)
}
return request
}
exampleUserSearchResult := &ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testUserSearchResultDNValue,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testUserSearchUsernameAttribute, []string{testUserSearchResultUsernameAttributeValue}),
ldap.NewEntryAttribute(testUserSearchUIDAttribute, []string{testUserSearchResultUIDAttributeValue}),
},
},
},
}
exampleGroupSearchResult := &ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testGroupSearchResultDNValue1,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testGroupSearchGroupNameAttribute, []string{testGroupSearchResultGroupNameAttributeValue1}),
},
},
{
DN: testGroupSearchResultDNValue2,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testGroupSearchGroupNameAttribute, []string{testGroupSearchResultGroupNameAttributeValue2}),
},
},
},
Referrals: []string{}, // note that we are not following referrals at this time
Controls: []ldap.Control{},
}
// The auth response which matches the exampleUserSearchResult and exampleGroupSearchResult.
expectedAuthResponse := func(editFunc func(r *user.DefaultInfo)) *authenticator.Response {
u := &user.DefaultInfo{
Name: testUserSearchResultUsernameAttributeValue,
UID: "123e4567-e89b-12d3-a456-426614174000",
Groups: []string{testGroupSearchResultGroupNameAttributeValue1, testGroupSearchResultGroupNameAttributeValue2},
}
if editFunc != nil {
editFunc(u)
}
return &authenticator.Response{User: u}
}
tests := []struct {
name string
username string
password string
providerConfig *upstreamldap.ProviderConfig
searchMocks func(conn *mockldapconn.MockConn)
bindEndUserMocks func(conn *mockldapconn.MockConn)
dialError error
wantError string
wantToSkipDial bool
wantAuthResponse *authenticator.Response
wantUnauthenticated bool
skipDryRunAuthenticateUser bool // tests about when the end user bind fails don't make sense for DryRunAuthenticateUser()
}{
{
name: "happy path",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(nil),
},
{
name: "default as much as possible",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: &upstreamldap.ProviderConfig{
Name: "some-provider-name",
Host: testHost,
CABundle: nil, // this field is only used by the production dialer, which is replaced by a mock for this test
ConnectionProtocol: upstreamldap.TLS,
BindUsername: testBindUsername,
BindPassword: testBindPassword,
GroupSearch: upstreamldap.GroupSearchConfig{
Base: testGroupSearchBase,
Filter: testGroupSearchFilter,
GroupNameAttribute: testGroupSearchGroupNameAttribute,
},
},
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(func(r *ldap.SearchRequest) {
r.Filter = "(" + sAMAccountNameAttributeName + "=" + testUpstreamUsername + ")"
r.Attributes = []string{sAMAccountNameAttributeName, testUserSearchUIDAttribute}
r.BaseDN = ""
})).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testUserSearchResultDNValue,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(sAMAccountNameAttributeName, []string{testUserSearchResultUsernameAttributeValue}),
ldap.NewEntryAttribute(testUserSearchUIDAttribute, []string{testUserSearchResultUIDAttributeValue}),
},
},
},
}, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(nil),
},
{
name: "when the user search filter is already wrapped by parenthesis then it is not wrapped again",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
p.UserSearch.Filter = "(" + testUserSearchFilter + ")"
}),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(nil),
},
{
name: "when the group search filter is already wrapped by parenthesis then it is not wrapped again",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
p.GroupSearch.Filter = "(" + testGroupSearchFilter + ")"
}),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(nil),
},
{
name: "when the group search base is empty then skip the group search entirely",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
p.GroupSearch.Base = "" // this configuration means that the user does not want group search to happen
}),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(func(r *user.DefaultInfo) {
r.Groups = []string{}
}),
},
{
name: "when the UsernameAttribute is dn and there is a user search filter provided",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
p.UserSearch.UsernameAttribute = "dn"
}),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(func(r *ldap.SearchRequest) {
r.Attributes = []string{testUserSearchUIDAttribute}
})).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testUserSearchResultDNValue,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testUserSearchUIDAttribute, []string{testUserSearchResultUIDAttributeValue}),
},
},
},
}, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(func(r *user.DefaultInfo) {
r.Name = testUserSearchResultDNValue
}),
},
{
name: "when the UIDAttribute is dn",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
p.UserSearch.UIDAttribute = "dn"
}),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(func(r *ldap.SearchRequest) {
r.Attributes = []string{testUserSearchUsernameAttribute}
})).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testUserSearchResultDNValue,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testUserSearchUsernameAttribute, []string{testUserSearchResultUsernameAttributeValue}),
},
},
},
}, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(func(r *user.DefaultInfo) {
r.UID = base64.RawURLEncoding.EncodeToString([]byte(testUserSearchResultDNValue))
}),
},
{
name: "when the GroupNameAttribute is empty then it defaults to dn",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
p.GroupSearch.GroupNameAttribute = "" // blank means to use dn
}),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(func(r *ldap.SearchRequest) {
r.Attributes = []string{}
}), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(func(r *user.DefaultInfo) {
r.Groups = []string{testGroupSearchResultDNValue1, testGroupSearchResultDNValue2}
}),
},
{
name: "when the GroupNameAttribute is dn",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
p.GroupSearch.GroupNameAttribute = "dn"
}),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(func(r *ldap.SearchRequest) {
r.Attributes = []string{}
}), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(func(r *user.DefaultInfo) {
r.Groups = []string{testGroupSearchResultDNValue1, testGroupSearchResultDNValue2}
}),
},
{
name: "when the GroupNameAttribute is cn",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
p.GroupSearch.GroupNameAttribute = "cn"
}),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(func(r *ldap.SearchRequest) {
r.Attributes = []string{"cn"}
}), expectedGroupSearchPageSize).
Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testGroupSearchResultDNValue1,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute("cn", []string{testGroupSearchResultGroupNameAttributeValue1}),
},
},
{
DN: testGroupSearchResultDNValue2,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute("cn", []string{testGroupSearchResultGroupNameAttributeValue2}),
},
},
},
Referrals: []string{}, // note that we are not following referrals at this time
Controls: []ldap.Control{},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(nil),
},
{
name: "when user search Filter is blank it derives a search filter from the UsernameAttribute",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
p.UserSearch.Filter = ""
}),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(func(r *ldap.SearchRequest) {
r.Filter = "(" + testUserSearchUsernameAttribute + "=" + testUpstreamUsername + ")"
})).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(nil),
},
{
name: "when user search Filter and user attribute is blank it defaults to sAMAccountName={}",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
p.UserSearch.Filter = ""
p.UserSearch.UsernameAttribute = ""
}),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(func(r *ldap.SearchRequest) {
r.Filter = "(" + sAMAccountNameAttributeName + "=" + testUpstreamUsername + ")"
r.Attributes = []string{sAMAccountNameAttributeName, testUserSearchUIDAttribute}
})).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testUserSearchResultDNValue,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(sAMAccountNameAttributeName, []string{testUserSearchResultUsernameAttributeValue}),
ldap.NewEntryAttribute(testUserSearchUIDAttribute, []string{testUserSearchResultUIDAttributeValue}),
},
},
},
}, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(nil),
},
{
name: "when group search Filter is blank it uses a default search filter of member={}",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
p.GroupSearch.Filter = ""
}),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(func(r *ldap.SearchRequest) {
r.Filter = "(member=" + testUserSearchResultDNValue + ")"
}), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(nil),
},
{
name: "when the username has special LDAP search filter characters then they must be properly escaped in the search filter, because the username is end-user input",
username: `a&b|c(d)e\f*g`,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(func(r *ldap.SearchRequest) {
r.Filter = fmt.Sprintf("(some-user-filter=%s-and-more-filter=%s)", `a&b|c\28d\29e\5cf\2ag`, `a&b|c\28d\29e\5cf\2ag`)
})).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: expectedAuthResponse(nil),
},
{
name: "group names are sorted to make the result more stable/predictable",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testGroupSearchResultDNValue1,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testGroupSearchGroupNameAttribute, []string{"c"}),
},
},
{
DN: testGroupSearchResultDNValue2,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testGroupSearchGroupNameAttribute, []string{"a"}),
},
},
{
DN: testGroupSearchResultDNValue2,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testGroupSearchGroupNameAttribute, []string{"b"}),
},
},
},
Referrals: []string{}, // note that we are not following referrals at this time
Controls: []ldap.Control{},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
},
wantAuthResponse: &authenticator.Response{
User: &user.DefaultInfo{
Name: testUserSearchResultUsernameAttributeValue,
UID: "123e4567-e89b-12d3-a456-426614174000",
Groups: []string{"a", "b", "c"},
},
},
},
{
name: "when dial fails",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
dialError: errors.New("some dial error"),
wantError: fmt.Sprintf(`error dialing host "%s": some dial error`, testHost),
},
{
name: "when the UsernameAttribute is dn and there is not a user search filter provided",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
p.UserSearch.UsernameAttribute = "dn"
p.UserSearch.Filter = ""
}),
wantToSkipDial: true,
wantError: `must specify UserSearch Filter when UserSearch UsernameAttribute is "dn"`,
},
{
name: "when binding as the bind user returns an error",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Return(errors.New("some bind error")).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(`error binding as "%s" before user search: some bind error`, testBindUsername),
},
{
name: "when searching for the user returns an error",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(nil, errors.New("some user search error")).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: `error searching for user: some user search error`,
},
{
name: "when searching for the user's groups returns an error",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(nil, errors.New("some group search error")).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(`error searching for group memberships for user with DN "%s": some group search error`, testUserSearchResultDNValue),
},
{
name: "when searching for the user returns no results",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantUnauthenticated: true,
},
{
name: "when searching for the user returns multiple results",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{DN: testUserSearchResultDNValue},
{DN: "some-other-dn"},
},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(`searching for user "%s" resulted in 2 search results, but expected 1 result`, testUpstreamUsername),
},
{
name: "when searching for the user returns a user without a DN",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{DN: ""},
},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(`searching for user "%s" resulted in search result without DN`, testUpstreamUsername),
},
{
name: "when searching for the user's groups returns a group without a DN",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testGroupSearchResultDNValue1,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testGroupSearchGroupNameAttribute, []string{testGroupSearchResultGroupNameAttributeValue1}),
},
},
{
DN: "",
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testGroupSearchGroupNameAttribute, []string{testGroupSearchResultGroupNameAttributeValue2}),
},
},
},
Referrals: []string{}, // note that we are not following referrals at this time
Controls: []ldap.Control{},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(
`searching for group memberships for user with DN "%s" resulted in search result without DN`,
testUserSearchResultDNValue),
},
{
name: "when searching for the user returns a user without an expected username attribute",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testUserSearchResultDNValue,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testUserSearchUIDAttribute, []string{testUserSearchResultUIDAttributeValue}),
},
},
},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(
`found 0 values for attribute "%s" while searching for user "%s", but expected 1 result`,
testUserSearchUsernameAttribute, testUpstreamUsername),
},
{
name: "when searching for the group memberships returns a group without an expected group name attribute",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testGroupSearchResultDNValue1,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testGroupSearchGroupNameAttribute, []string{testGroupSearchResultGroupNameAttributeValue1}),
},
},
{
DN: testGroupSearchResultDNValue1,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute("unrelated attribute", []string{"anything"}),
},
},
},
Referrals: []string{}, // note that we are not following referrals at this time
Controls: []ldap.Control{},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(
`error searching for group memberships for user with DN "%s": found 0 values for attribute "%s" while searching for user "%s", but expected 1 result`,
testUserSearchResultDNValue, testGroupSearchGroupNameAttribute, testUserSearchResultDNValue),
},
{
name: "when searching for the user returns a user with too many values for the expected username attribute",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testUserSearchResultDNValue,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testUserSearchUsernameAttribute, []string{
testUserSearchResultUsernameAttributeValue,
"unexpected-additional-value",
}),
ldap.NewEntryAttribute(testUserSearchUIDAttribute, []string{testUserSearchResultUIDAttributeValue}),
},
},
},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(
`found 2 values for attribute "%s" while searching for user "%s", but expected 1 result`,
testUserSearchUsernameAttribute, testUpstreamUsername),
},
{
name: "when searching for the group memberships returns a group with too many values for the expected group name attribute",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testGroupSearchResultDNValue1,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testGroupSearchGroupNameAttribute, []string{testGroupSearchResultGroupNameAttributeValue1}),
},
},
{
DN: testGroupSearchResultDNValue1,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testGroupSearchGroupNameAttribute, []string{
testGroupSearchResultGroupNameAttributeValue1,
"unexpected-additional-value",
}),
},
},
},
Referrals: []string{}, // note that we are not following referrals at this time
Controls: []ldap.Control{},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(
`error searching for group memberships for user with DN "%s": found 2 values for attribute "%s" while searching for user "%s", but expected 1 result`,
testUserSearchResultDNValue, testGroupSearchGroupNameAttribute, testUserSearchResultDNValue),
},
{
name: "when searching for the user returns a user with an empty value for the expected username attribute",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testUserSearchResultDNValue,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testUserSearchUsernameAttribute, []string{""}),
ldap.NewEntryAttribute(testUserSearchUIDAttribute, []string{testUserSearchResultUIDAttributeValue}),
},
},
},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(
`found empty value for attribute "%s" while searching for user "%s", but expected value to be non-empty`,
testUserSearchUsernameAttribute, testUpstreamUsername),
},
{
name: "when searching for the group memberships returns a group with an empty value for for the expected group name attribute",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testGroupSearchResultDNValue1,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testGroupSearchGroupNameAttribute, []string{testGroupSearchResultGroupNameAttributeValue1}),
},
},
{
DN: testGroupSearchResultDNValue1,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testGroupSearchGroupNameAttribute, []string{""}),
},
},
},
Referrals: []string{}, // note that we are not following referrals at this time
Controls: []ldap.Control{},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(
`error searching for group memberships for user with DN "%s": found empty value for attribute "%s" while searching for user "%s", but expected value to be non-empty`,
testUserSearchResultDNValue, testGroupSearchGroupNameAttribute, testUserSearchResultDNValue),
},
{
name: "when searching for the user returns a user without an expected UID attribute",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testUserSearchResultDNValue,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testUserSearchUsernameAttribute, []string{testUserSearchResultUsernameAttributeValue}),
},
},
},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(`found 0 values for attribute "%s" while searching for user "%s", but expected 1 result`, testUserSearchUIDAttribute, testUpstreamUsername),
},
{
name: "when searching for the user returns a user with too many values for the expected UID attribute",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testUserSearchResultDNValue,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testUserSearchUsernameAttribute, []string{testUserSearchResultUsernameAttributeValue}),
ldap.NewEntryAttribute(testUserSearchUIDAttribute, []string{
testUserSearchResultUIDAttributeValue,
"unexpected-additional-value",
}),
},
},
},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(`found 2 values for attribute "%s" while searching for user "%s", but expected 1 result`, testUserSearchUIDAttribute, testUpstreamUsername),
},
{
name: "when searching for the user returns a user with an empty value for the expected UID attribute",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(&ldap.SearchResult{
Entries: []*ldap.Entry{
{
DN: testUserSearchResultDNValue,
Attributes: []*ldap.EntryAttribute{
ldap.NewEntryAttribute(testUserSearchUsernameAttribute, []string{testUserSearchResultUsernameAttributeValue}),
ldap.NewEntryAttribute(testUserSearchUIDAttribute, []string{""}),
},
},
},
}, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(`found empty value for attribute "%s" while searching for user "%s", but expected value to be non-empty`, testUserSearchUIDAttribute, testUpstreamUsername),
},
{
name: "when binding as the found user returns an error",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Return(errors.New("some bind error")).Times(1)
},
skipDryRunAuthenticateUser: true,
wantError: fmt.Sprintf(`error binding for user "%s" using provided password against DN "%s": some bind error`, testUpstreamUsername, testUserSearchResultDNValue),
},
{
name: "when binding as the found user returns a specific invalid credentials error",
username: testUpstreamUsername,
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
searchMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Search(expectedUserSearch(nil)).Return(exampleUserSearchResult, nil).Times(1)
conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
Return(exampleGroupSearchResult, nil).Times(1)
conn.EXPECT().Close().Times(1)
},
wantUnauthenticated: true,
skipDryRunAuthenticateUser: true,
bindEndUserMocks: func(conn *mockldapconn.MockConn) {
err := &ldap.Error{
Err: errors.New("some bind error"),
ResultCode: ldap.LDAPResultInvalidCredentials,
}
conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Return(err).Times(1)
},
},
{
name: "when no username is specified",
username: "",
password: testUpstreamPassword,
providerConfig: providerConfig(nil),
wantToSkipDial: true,
wantUnauthenticated: true,
},
}
for _, test := range tests {
tt := test
t.Run(tt.name, func(t *testing.T) {
ctrl := gomock.NewController(t)
t.Cleanup(ctrl.Finish)
conn := mockldapconn.NewMockConn(ctrl)
if tt.searchMocks != nil {
tt.searchMocks(conn)
}
if tt.bindEndUserMocks != nil {
tt.bindEndUserMocks(conn)
}
dialWasAttempted := false
tt.providerConfig.Dialer = upstreamldap.LDAPDialerFunc(func(ctx context.Context, addr endpointaddr.HostPort) (upstreamldap.Conn, error) {
dialWasAttempted = true
require.Equal(t, tt.providerConfig.Host, addr.Endpoint())
if tt.dialError != nil {
return nil, tt.dialError
}
return conn, nil
})
provider := New(*tt.providerConfig)
authResponse, authenticated, err := provider.AuthenticateUser(context.Background(), tt.username, tt.password)
require.Equal(t, !tt.wantToSkipDial, dialWasAttempted)
switch {
case tt.wantError != "":
require.EqualError(t, err, tt.wantError)
require.False(t, authenticated)
require.Nil(t, authResponse)
case tt.wantUnauthenticated:
require.NoError(t, err)
require.False(t, authenticated)
require.Nil(t, authResponse)
default:
require.NoError(t, err)
require.True(t, authenticated)
require.Equal(t, tt.wantAuthResponse, authResponse)
}
// DryRunAuthenticateUser() should have the same behavior as AuthenticateUser() except that it does not bind
// as the end user to confirm their password. Since it should behave the same, all of the same test cases
// apply, except for those which are specifically testing what happens when the end user bind fails.
if tt.skipDryRunAuthenticateUser {
return // move on to the next test
}
// Reset some variables to get ready to call DryRunAuthenticateUser().
dialWasAttempted = false
conn = mockldapconn.NewMockConn(ctrl)
if tt.searchMocks != nil {
tt.searchMocks(conn)
}
// Skip tt.bindEndUserMocks since DryRunAuthenticateUser() never binds as the end user.
authResponse, authenticated, err = provider.DryRunAuthenticateUser(context.Background(), tt.username)
require.Equal(t, !tt.wantToSkipDial, dialWasAttempted)
switch {
case tt.wantError != "":
require.EqualError(t, err, tt.wantError)
require.False(t, authenticated)
require.Nil(t, authResponse)
case tt.wantUnauthenticated:
require.NoError(t, err)
require.False(t, authenticated)
require.Nil(t, authResponse)
default:
require.NoError(t, err)
require.True(t, authenticated)
require.Equal(t, tt.wantAuthResponse, authResponse)
}
})
}
}
func TestTestConnection(t *testing.T) {
providerConfig := func(editFunc func(p *upstreamldap.ProviderConfig)) *upstreamldap.ProviderConfig {
config := &upstreamldap.ProviderConfig{
Name: "some-provider-name",
Host: testHost,
CABundle: nil, // this field is only used by the production dialer, which is replaced by a mock for this test
ConnectionProtocol: upstreamldap.TLS,
BindUsername: testBindUsername,
BindPassword: testBindPassword,
UserSearch: upstreamldap.UserSearchConfig{}, // not used by TestConnection
}
if editFunc != nil {
editFunc(config)
}
return config
}
tests := []struct {
name string
providerConfig *upstreamldap.ProviderConfig
setupMocks func(conn *mockldapconn.MockConn)
dialError error
wantError string
wantToSkipDial bool
}{
{
name: "happy path",
providerConfig: providerConfig(nil),
setupMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
conn.EXPECT().Close().Times(1)
},
},
{
name: "when dial fails",
providerConfig: providerConfig(nil),
dialError: errors.New("some dial error"),
wantError: fmt.Sprintf(`error dialing host "%s": some dial error`, testHost),
},
{
name: "when binding as the bind user returns an error",
providerConfig: providerConfig(nil),
setupMocks: func(conn *mockldapconn.MockConn) {
conn.EXPECT().Bind(testBindUsername, testBindPassword).Return(errors.New("some bind error")).Times(1)
conn.EXPECT().Close().Times(1)
},
wantError: fmt.Sprintf(`error binding as "%s": some bind error`, testBindUsername),
},
{
name: "when the config is invalid",
providerConfig: providerConfig(func(p *upstreamldap.ProviderConfig) {
// This particular combination of options is not allowed.
p.UserSearch.UsernameAttribute = "dn"
p.UserSearch.Filter = ""
}),
wantToSkipDial: true,
wantError: `must specify UserSearch Filter when UserSearch UsernameAttribute is "dn"`,
},
}
for _, test := range tests {
tt := test
t.Run(tt.name, func(t *testing.T) {
ctrl := gomock.NewController(t)
t.Cleanup(ctrl.Finish)
conn := mockldapconn.NewMockConn(ctrl)
if tt.setupMocks != nil {
tt.setupMocks(conn)
}
dialWasAttempted := false
tt.providerConfig.Dialer = upstreamldap.LDAPDialerFunc(func(ctx context.Context, addr endpointaddr.HostPort) (upstreamldap.Conn, error) {
dialWasAttempted = true
require.Equal(t, tt.providerConfig.Host, addr.Endpoint())
if tt.dialError != nil {
return nil, tt.dialError
}
return conn, nil
})
provider := New(*tt.providerConfig)
err := provider.TestConnection(context.Background())
require.Equal(t, !tt.wantToSkipDial, dialWasAttempted)
switch {
case tt.wantError != "":
require.EqualError(t, err, tt.wantError)
default:
require.NoError(t, err)
}
})
}
}
func TestGetConfig(t *testing.T) {
c := upstreamldap.ProviderConfig{
Name: "original-provider-name",
Host: testHost,
CABundle: []byte("some-ca-bundle"),
BindUsername: testBindUsername,
BindPassword: testBindPassword,
UserSearch: upstreamldap.UserSearchConfig{
Base: testUserSearchBase,
Filter: testUserSearchFilter,
UsernameAttribute: testUserSearchUsernameAttribute,
UIDAttribute: testUserSearchUIDAttribute,
},
}
p := New(c)
require.Equal(t, c, p.c)
require.Equal(t, c, p.GetConfig())
// The original config can be changed without impacting the provider, since the provider made a copy of the config.
c.Name = "changed-name"
require.Equal(t, "original-provider-name", p.c.Name)
// The return value of GetConfig can be modified without impacting the provider, since it is a copy of the config.
returnedConfig := p.GetConfig()
returnedConfig.Name = "changed-name"
require.Equal(t, "original-provider-name", p.c.Name)
}
func TestGetURL(t *testing.T) {
require.Equal(t,
"ldaps://ldap.example.com:1234?base=ou%3Dusers%2Cdc%3Dpinniped%2Cdc%3Ddev",
New(upstreamldap.ProviderConfig{
Host: "ldap.example.com:1234",
UserSearch: upstreamldap.UserSearchConfig{Base: "ou=users,dc=pinniped,dc=dev"},
}).GetURL().String())
require.Equal(t,
"ldaps://ldap.example.com?base=ou%3Dusers%2Cdc%3Dpinniped%2Cdc%3Ddev",
New(upstreamldap.ProviderConfig{
Host: "ldap.example.com",
UserSearch: upstreamldap.UserSearchConfig{Base: "ou=users,dc=pinniped,dc=dev"},
}).GetURL().String())
}
// Testing of host parsing, TLS negotiation, and CA bundle, etc. for the production code's dialer.
func TestRealTLSDialing(t *testing.T) {
testServerCABundle, testServerURL := testutil.TLSTestServer(t, func(w http.ResponseWriter, r *http.Request) {})
parsedURL, err := url.Parse(testServerURL)
require.NoError(t, err)
testServerHostAndPort := parsedURL.Host
caForTestServerWithBadCertName, err := certauthority.New("Test CA", time.Hour)
require.NoError(t, err)
wrongIP := net.ParseIP("10.2.3.4")
cert, err := caForTestServerWithBadCertName.IssueServerCert([]string{"wrong-dns-name"}, []net.IP{wrongIP}, time.Hour)
require.NoError(t, err)
testServerWithBadCertNameAddr := testutil.TLSTestServerWithCert(t, func(w http.ResponseWriter, r *http.Request) {}, cert)
unusedPortGrabbingListener, err := net.Listen("tcp", "127.0.0.1:0")
require.NoError(t, err)
recentlyClaimedHostAndPort := unusedPortGrabbingListener.Addr().String()
require.NoError(t, unusedPortGrabbingListener.Close())
alreadyCancelledContext, cancelFunc := context.WithCancel(context.Background())
cancelFunc() // cancel it immediately
tests := []struct {
name string
host string
connProto upstreamldap.LDAPConnectionProtocol
caBundle []byte
context context.Context
wantError string
}{
{
name: "happy path",
host: testServerHostAndPort,
caBundle: []byte(testServerCABundle),
connProto: upstreamldap.TLS,
context: context.Background(),
},
{
name: "server cert name does not match the address to which the client connected",
host: testServerWithBadCertNameAddr,
caBundle: caForTestServerWithBadCertName.Bundle(),
connProto: upstreamldap.TLS,
context: context.Background(),
wantError: `LDAP Result Code 200 "Network Error": x509: certificate is valid for 10.2.3.4, not 127.0.0.1`,
},
{
name: "invalid CA bundle with TLS",
host: testServerHostAndPort,
caBundle: []byte("not a ca bundle"),
connProto: upstreamldap.TLS,
context: context.Background(),
wantError: `LDAP Result Code 200 "Network Error": could not parse CA bundle`,
},
{
name: "invalid CA bundle with StartTLS",
host: testServerHostAndPort,
caBundle: []byte("not a ca bundle"),
connProto: upstreamldap.StartTLS,
context: context.Background(),
wantError: `LDAP Result Code 200 "Network Error": could not parse CA bundle`,
},
{
name: "invalid host with TLS",
host: "this:is:not:a:valid:hostname",
caBundle: []byte(testServerCABundle),
connProto: upstreamldap.TLS,
context: context.Background(),
wantError: `LDAP Result Code 200 "Network Error": host "this:is:not:a:valid:hostname" is not a valid hostname or IP address`,
},
{
name: "invalid host with StartTLS",
host: "this:is:not:a:valid:hostname",
caBundle: []byte(testServerCABundle),
connProto: upstreamldap.StartTLS,
context: context.Background(),
wantError: `LDAP Result Code 200 "Network Error": host "this:is:not:a:valid:hostname" is not a valid hostname or IP address`,
},
{
name: "missing CA bundle when it is required because the host is not using a trusted CA",
host: testServerHostAndPort,
caBundle: nil,
connProto: upstreamldap.TLS,
context: context.Background(),
wantError: `LDAP Result Code 200 "Network Error": x509: certificate signed by unknown authority`,
},
{
name: "cannot connect to host",
// This is assuming that this port was not reclaimed by another app since the test setup ran. Seems safe enough.
host: recentlyClaimedHostAndPort,
caBundle: []byte(testServerCABundle),
connProto: upstreamldap.TLS,
context: context.Background(),
wantError: fmt.Sprintf(`LDAP Result Code 200 "Network Error": dial tcp %s: connect: connection refused`, recentlyClaimedHostAndPort),
},
{
name: "pays attention to the passed context",
host: testServerHostAndPort,
caBundle: []byte(testServerCABundle),
connProto: upstreamldap.TLS,
context: alreadyCancelledContext,
wantError: fmt.Sprintf(`LDAP Result Code 200 "Network Error": dial tcp %s: operation was canceled`, testServerHostAndPort),
},
{
name: "unsupported connection protocol",
host: testServerHostAndPort,
caBundle: []byte(testServerCABundle),
connProto: "bad usage of this type",
context: alreadyCancelledContext,
wantError: `LDAP Result Code 200 "Network Error": did not specify valid ConnectionProtocol`,
},
}
for _, test := range tests {
tt := test
t.Run(tt.name, func(t *testing.T) {
provider := New(upstreamldap.ProviderConfig{
Host: tt.host,
CABundle: tt.caBundle,
ConnectionProtocol: tt.connProto,
Dialer: nil, // this test is for the default (production) TLS dialer
})
conn, err := provider.dial(tt.context)
if conn != nil {
defer conn.Close()
}
if tt.wantError != "" {
require.Nil(t, conn)
require.EqualError(t, err, tt.wantError)
} else {
require.NoError(t, err)
require.NotNil(t, conn)
// Should be an instance of the real production LDAP client type.
// Can't test its methods here because we are not dialed to a real LDAP server.
require.IsType(t, &ldap.Conn{}, conn)
// Indirectly checking that the Dialer method constructed the ldap.Conn with isTLS set to true,
// since this is always the correct behavior unless/until we want to support StartTLS.
err := conn.(*ldap.Conn).StartTLS(&tls.Config{})
require.EqualError(t, err, `LDAP Result Code 200 "Network Error": ldap: already encrypted`)
}
})
}
}