oauth2_proxy/oauthproxy_test.go

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package main
import (
"github.com/bitly/go-simplejson"
"github.com/bitly/google_auth_proxy/providers"
"github.com/bmizerany/assert"
"io/ioutil"
"net"
"net/http"
"net/http/httptest"
"net/url"
"regexp"
"strings"
"testing"
"time"
)
func TestNewReverseProxy(t *testing.T) {
backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(200)
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hostname, _, _ := net.SplitHostPort(r.Host)
w.Write([]byte(hostname))
}))
defer backend.Close()
backendURL, _ := url.Parse(backend.URL)
backendHostname, backendPort, _ := net.SplitHostPort(backendURL.Host)
backendHost := net.JoinHostPort(backendHostname, backendPort)
proxyURL, _ := url.Parse(backendURL.Scheme + "://" + backendHost + "/")
proxyHandler := NewReverseProxy(proxyURL)
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setProxyUpstreamHostHeader(proxyHandler, proxyURL)
frontend := httptest.NewServer(proxyHandler)
defer frontend.Close()
getReq, _ := http.NewRequest("GET", frontend.URL, nil)
res, _ := http.DefaultClient.Do(getReq)
bodyBytes, _ := ioutil.ReadAll(res.Body)
if g, e := string(bodyBytes), backendHostname; g != e {
t.Errorf("got body %q; expected %q", g, e)
}
}
func TestEncodedSlashes(t *testing.T) {
var seen string
backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(200)
seen = r.RequestURI
}))
defer backend.Close()
b, _ := url.Parse(backend.URL)
proxyHandler := NewReverseProxy(b)
setProxyDirector(proxyHandler)
frontend := httptest.NewServer(proxyHandler)
defer frontend.Close()
f, _ := url.Parse(frontend.URL)
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encodedPath := "/a%2Fb/?c=1"
getReq := &http.Request{URL: &url.URL{Scheme: "http", Host: f.Host, Opaque: encodedPath}}
_, err := http.DefaultClient.Do(getReq)
if err != nil {
t.Fatalf("err %s", err)
}
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if seen != encodedPath {
t.Errorf("got bad request %q expected %q", seen, encodedPath)
}
}
type TestProvider struct {
*providers.ProviderData
EmailAddress string
}
func (tp *TestProvider) GetEmailAddress(unused_auth_response *simplejson.Json,
unused_access_token string) (string, error) {
return tp.EmailAddress, nil
}
type PassAccessTokenTest struct {
provider_server *httptest.Server
proxy *OauthProxy
opts *Options
}
type PassAccessTokenTestOptions struct {
PassAccessToken bool
}
func NewPassAccessTokenTest(opts PassAccessTokenTestOptions) *PassAccessTokenTest {
t := &PassAccessTokenTest{}
t.provider_server = httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
url := r.URL
payload := ""
switch url.Path {
case "/oauth/token":
payload = `{"access_token": "my_auth_token"}`
default:
token_header := r.Header["X-Forwarded-Access-Token"]
if len(token_header) != 0 {
payload = token_header[0]
} else {
payload = "No access token found."
}
}
w.WriteHeader(200)
w.Write([]byte(payload))
}))
t.opts = NewOptions()
t.opts.Upstreams = append(t.opts.Upstreams, t.provider_server.URL)
// The CookieSecret must be 32 bytes in order to create the AES
// cipher.
t.opts.CookieSecret = "xyzzyplughxyzzyplughxyzzyplughxp"
t.opts.ClientID = "bazquux"
t.opts.ClientSecret = "foobar"
t.opts.CookieSecure = false
t.opts.PassAccessToken = opts.PassAccessToken
t.opts.Validate()
provider_url, _ := url.Parse(t.provider_server.URL)
const email_address = "michael.bland@gsa.gov"
t.opts.provider = &TestProvider{
ProviderData: &providers.ProviderData{
ProviderName: "Test Provider",
LoginUrl: &url.URL{
Scheme: "http",
Host: provider_url.Host,
Path: "/oauth/authorize",
},
RedeemUrl: &url.URL{
Scheme: "http",
Host: provider_url.Host,
Path: "/oauth/token",
},
ProfileUrl: &url.URL{
Scheme: "http",
Host: provider_url.Host,
Path: "/api/v1/profile",
},
Scope: "profile.email",
},
EmailAddress: email_address,
}
t.proxy = NewOauthProxy(t.opts, func(email string) bool {
return email == email_address
})
return t
}
func (pat_test *PassAccessTokenTest) Close() {
pat_test.provider_server.Close()
}
func (pat_test *PassAccessTokenTest) getCallbackEndpoint() (http_code int,
cookie string) {
rw := httptest.NewRecorder()
req, err := http.NewRequest("GET", "/oauth2/callback?code=callback_code",
strings.NewReader(""))
if err != nil {
return 0, ""
}
pat_test.proxy.ServeHTTP(rw, req)
return rw.Code, rw.HeaderMap["Set-Cookie"][0]
}
func (pat_test *PassAccessTokenTest) getRootEndpoint(
cookie string) (http_code int, access_token string) {
cookie_key := pat_test.proxy.CookieKey
var value string
key_prefix := cookie_key + "="
for _, field := range strings.Split(cookie, "; ") {
value = strings.TrimPrefix(field, key_prefix)
if value != field {
break
} else {
value = ""
}
}
if value == "" {
return 0, ""
}
req, err := http.NewRequest("GET", "/", strings.NewReader(""))
if err != nil {
return 0, ""
}
req.AddCookie(&http.Cookie{
Name: cookie_key,
Value: value,
Path: "/",
Expires: time.Now().Add(time.Duration(24)),
HttpOnly: true,
})
rw := httptest.NewRecorder()
pat_test.proxy.ServeHTTP(rw, req)
return rw.Code, rw.Body.String()
}
func TestForwardAccessTokenUpstream(t *testing.T) {
pat_test := NewPassAccessTokenTest(PassAccessTokenTestOptions{
PassAccessToken: true,
})
defer pat_test.Close()
// A successful validation will redirect and set the auth cookie.
code, cookie := pat_test.getCallbackEndpoint()
assert.Equal(t, 302, code)
assert.NotEqual(t, nil, cookie)
// Now we make a regular request; the access_token from the cookie is
// forwarded as the "X-Forwarded-Access-Token" header. The token is
// read by the test provider server and written in the response body.
code, payload := pat_test.getRootEndpoint(cookie)
assert.Equal(t, 200, code)
assert.Equal(t, "my_auth_token", payload)
}
func TestDoNotForwardAccessTokenUpstream(t *testing.T) {
pat_test := NewPassAccessTokenTest(PassAccessTokenTestOptions{
PassAccessToken: false,
})
defer pat_test.Close()
// A successful validation will redirect and set the auth cookie.
code, cookie := pat_test.getCallbackEndpoint()
assert.Equal(t, 302, code)
assert.NotEqual(t, nil, cookie)
// Now we make a regular request, but the access token header should
// not be present.
code, payload := pat_test.getRootEndpoint(cookie)
assert.Equal(t, 200, code)
assert.Equal(t, "No access token found.", payload)
}
type SignInPageTest struct {
opts *Options
proxy *OauthProxy
sign_in_regexp *regexp.Regexp
}
const signInRedirectPattern = `<input type="hidden" name="rd" value="(.*)">`
func NewSignInPageTest() *SignInPageTest {
var sip_test SignInPageTest
sip_test.opts = NewOptions()
sip_test.opts.Upstreams = append(sip_test.opts.Upstreams, "unused")
sip_test.opts.CookieSecret = "foobar"
sip_test.opts.ClientID = "bazquux"
sip_test.opts.ClientSecret = "xyzzyplugh"
sip_test.opts.Validate()
sip_test.proxy = NewOauthProxy(sip_test.opts, func(email string) bool {
return true
})
sip_test.sign_in_regexp = regexp.MustCompile(signInRedirectPattern)
return &sip_test
}
func (sip_test *SignInPageTest) GetEndpoint(endpoint string) (int, string) {
rw := httptest.NewRecorder()
req, _ := http.NewRequest("GET", endpoint, strings.NewReader(""))
sip_test.proxy.ServeHTTP(rw, req)
return rw.Code, rw.Body.String()
}
func TestSignInPageIncludesTargetRedirect(t *testing.T) {
sip_test := NewSignInPageTest()
const endpoint = "/some/random/endpoint"
code, body := sip_test.GetEndpoint(endpoint)
assert.Equal(t, 403, code)
match := sip_test.sign_in_regexp.FindStringSubmatch(body)
if match == nil {
t.Fatal("Did not find pattern in body: " +
signInRedirectPattern + "\nBody:\n" + body)
}
if match[1] != endpoint {
t.Fatal(`expected redirect to "` + endpoint +
`", but was "` + match[1] + `"`)
}
}
func TestSignInPageDirectAccessRedirectsToRoot(t *testing.T) {
sip_test := NewSignInPageTest()
code, body := sip_test.GetEndpoint("/oauth2/sign_in")
assert.Equal(t, 200, code)
match := sip_test.sign_in_regexp.FindStringSubmatch(body)
if match == nil {
t.Fatal("Did not find pattern in body: " +
signInRedirectPattern + "\nBody:\n" + body)
}
if match[1] != "/" {
t.Fatal(`expected redirect to "/", but was "` + match[1] + `"`)
}
}
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type ValidateTokenTest struct {
opts *Options
proxy *OauthProxy
backend *httptest.Server
response_code int
}
func NewValidateTokenTest() *ValidateTokenTest {
var vt_test ValidateTokenTest
vt_test.opts = NewOptions()
vt_test.opts.Upstreams = append(vt_test.opts.Upstreams, "unused")
vt_test.opts.CookieSecret = "foobar"
vt_test.opts.ClientID = "bazquux"
vt_test.opts.ClientSecret = "xyzzyplugh"
vt_test.opts.Validate()
vt_test.backend = httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.URL.Path {
case "/oauth/tokeninfo":
w.WriteHeader(vt_test.response_code)
w.Write([]byte("only code matters; contents disregarded"))
default:
w.WriteHeader(500)
w.Write([]byte("unknown URL"))
}
}))
backend_url, _ := url.Parse(vt_test.backend.URL)
vt_test.opts.provider.Data().ValidateUrl = &url.URL{
Scheme: "http",
Host: backend_url.Host,
Path: "/oauth/tokeninfo",
}
vt_test.response_code = 200
vt_test.proxy = NewOauthProxy(vt_test.opts, func(email string) bool {
return true
})
return &vt_test
}
func (vt_test *ValidateTokenTest) Close() {
vt_test.backend.Close()
}
func TestValidateTokenEmptyToken(t *testing.T) {
vt_test := NewValidateTokenTest()
defer vt_test.Close()
assert.Equal(t, false, vt_test.proxy.ValidateToken(""))
}
func TestValidateTokenEmptyValidateUrl(t *testing.T) {
vt_test := NewValidateTokenTest()
defer vt_test.Close()
vt_test.proxy.oauthValidateUrl = nil
assert.Equal(t, false, vt_test.proxy.ValidateToken("foobar"))
}
func TestValidateTokenRequestNetworkFailure(t *testing.T) {
vt_test := NewValidateTokenTest()
// Close immediately to simulate a network failure
vt_test.Close()
assert.Equal(t, false, vt_test.proxy.ValidateToken("foobar"))
}
func TestValidateTokenExpiredToken(t *testing.T) {
vt_test := NewValidateTokenTest()
defer vt_test.Close()
vt_test.response_code = 401
assert.Equal(t, false, vt_test.proxy.ValidateToken("foobar"))
}
func TestValidateTokenValidToken(t *testing.T) {
vt_test := NewValidateTokenTest()
defer vt_test.Close()
assert.Equal(t, true, vt_test.proxy.ValidateToken("foobar"))
}
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type ProcessCookieTest struct {
opts *Options
proxy *OauthProxy
rw *httptest.ResponseRecorder
req *http.Request
backend *httptest.Server
response_code int
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validate_user bool
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}
func NewProcessCookieTest() *ProcessCookieTest {
var pc_test ProcessCookieTest
pc_test.opts = NewOptions()
pc_test.opts.Upstreams = append(pc_test.opts.Upstreams, "unused")
pc_test.opts.CookieSecret = "foobar"
pc_test.opts.ClientID = "bazquux"
pc_test.opts.ClientSecret = "xyzzyplugh"
pc_test.opts.CookieSecret = "0123456789abcdef"
// First, set the CookieRefresh option so proxy.AesCipher is created,
// needed to encrypt the access_token.
pc_test.opts.CookieRefresh = time.Duration(24) * time.Hour
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pc_test.opts.Validate()
pc_test.proxy = NewOauthProxy(pc_test.opts, func(email string) bool {
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return pc_test.validate_user
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})
// Now, zero-out proxy.CookieRefresh for the cases that don't involve
// access_token validation.
pc_test.proxy.CookieRefresh = time.Duration(0)
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pc_test.rw = httptest.NewRecorder()
pc_test.req, _ = http.NewRequest("GET", "/", strings.NewReader(""))
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pc_test.validate_user = true
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return &pc_test
}
func (p *ProcessCookieTest) InstantiateBackend() {
p.backend = httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(p.response_code)
}))
backend_url, _ := url.Parse(p.backend.URL)
p.proxy.oauthValidateUrl = &url.URL{
Scheme: "http",
Host: backend_url.Host,
Path: "/oauth/tokeninfo",
}
p.response_code = 200
}
func (p *ProcessCookieTest) Close() {
p.backend.Close()
}
func (p *ProcessCookieTest) MakeCookie(value, access_token string) *http.Cookie {
cookie_value, _ := buildCookieValue(
value, p.proxy.AesCipher, access_token)
return p.proxy.MakeCookie(p.req, cookie_value, p.opts.CookieExpire)
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}
func (p *ProcessCookieTest) AddCookie(value, access_token string) {
p.req.AddCookie(p.MakeCookie(value, access_token))
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}
func (p *ProcessCookieTest) ProcessCookie() (email, user, access_token string, ok bool) {
return p.proxy.ProcessCookie(p.rw, p.req)
}
func TestProcessCookie(t *testing.T) {
pc_test := NewProcessCookieTest()
pc_test.AddCookie("michael.bland@gsa.gov", "my_access_token")
email, user, access_token, ok := pc_test.ProcessCookie()
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assert.Equal(t, true, ok)
assert.Equal(t, "michael.bland@gsa.gov", email)
assert.Equal(t, "michael.bland", user)
assert.Equal(t, "my_access_token", access_token)
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}
func TestProcessCookieNoCookieError(t *testing.T) {
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pc_test := NewProcessCookieTest()
_, _, _, ok := pc_test.ProcessCookie()
assert.Equal(t, false, ok)
}
func TestProcessCookieFailIfParsingCookieValueFails(t *testing.T) {
pc_test := NewProcessCookieTest()
value, _ := buildCookieValue("michael.bland@gsa.gov",
pc_test.proxy.AesCipher, "my_access_token")
pc_test.req.AddCookie(pc_test.proxy.MakeCookie(
pc_test.req, value+"some bogus bytes",
pc_test.opts.CookieExpire))
_, _, _, ok := pc_test.ProcessCookie()
assert.Equal(t, false, ok)
}
func TestProcessCookieRefreshNotSet(t *testing.T) {
pc_test := NewProcessCookieTest()
pc_test.InstantiateBackend()
defer pc_test.Close()
pc_test.proxy.CookieExpire = time.Duration(23) * time.Hour
cookie := pc_test.MakeCookie("michael.bland@gsa.gov", "")
pc_test.req.AddCookie(cookie)
_, _, _, ok := pc_test.ProcessCookie()
assert.Equal(t, true, ok)
assert.Equal(t, []string(nil), pc_test.rw.HeaderMap["Set-Cookie"])
}
func TestProcessCookieRefresh(t *testing.T) {
pc_test := NewProcessCookieTest()
pc_test.InstantiateBackend()
defer pc_test.Close()
pc_test.proxy.CookieExpire = time.Duration(23) * time.Hour
cookie := pc_test.MakeCookie("michael.bland@gsa.gov", "my_access_token")
pc_test.req.AddCookie(cookie)
pc_test.proxy.CookieRefresh = time.Duration(24) * time.Hour
_, _, _, ok := pc_test.ProcessCookie()
assert.Equal(t, true, ok)
assert.NotEqual(t, []string(nil), pc_test.rw.HeaderMap["Set-Cookie"])
}
func TestProcessCookieRefreshThresholdNotCrossed(t *testing.T) {
pc_test := NewProcessCookieTest()
pc_test.InstantiateBackend()
defer pc_test.Close()
pc_test.proxy.CookieExpire = time.Duration(25) * time.Hour
cookie := pc_test.MakeCookie("michael.bland@gsa.gov", "my_access_token")
pc_test.req.AddCookie(cookie)
pc_test.proxy.CookieRefresh = time.Duration(24) * time.Hour
_, _, _, ok := pc_test.ProcessCookie()
assert.Equal(t, true, ok)
assert.Equal(t, []string(nil), pc_test.rw.HeaderMap["Set-Cookie"])
}
func TestProcessCookieFailIfRefreshSetAndTokenNoLongerValid(t *testing.T) {
pc_test := NewProcessCookieTest()
pc_test.InstantiateBackend()
defer pc_test.Close()
pc_test.response_code = 401
pc_test.proxy.CookieExpire = time.Duration(23) * time.Hour
cookie := pc_test.MakeCookie("michael.bland@gsa.gov", "my_access_token")
pc_test.req.AddCookie(cookie)
pc_test.proxy.CookieRefresh = time.Duration(24) * time.Hour
_, _, _, ok := pc_test.ProcessCookie()
assert.Equal(t, false, ok)
assert.Equal(t, []string(nil), pc_test.rw.HeaderMap["Set-Cookie"])
}
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func TestProcessCookieFailIfRefreshSetAndUserNoLongerValid(t *testing.T) {
pc_test := NewProcessCookieTest()
pc_test.InstantiateBackend()
defer pc_test.Close()
pc_test.validate_user = false
pc_test.proxy.CookieExpire = time.Duration(23) * time.Hour
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cookie := pc_test.MakeCookie("michael.bland@gsa.gov", "my_access_token")
pc_test.req.AddCookie(cookie)
pc_test.proxy.CookieRefresh = time.Duration(24) * time.Hour
_, _, _, ok := pc_test.ProcessCookie()
assert.Equal(t, false, ok)
assert.Equal(t, []string(nil), pc_test.rw.HeaderMap["Set-Cookie"])
}