406 lines
11 KiB
Go
406 lines
11 KiB
Go
package options
|
|
|
|
import (
|
|
"fmt"
|
|
"net/url"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/oauth2-proxy/oauth2-proxy/v7/pkg/logger"
|
|
"github.com/spf13/pflag"
|
|
)
|
|
|
|
type LegacyOptions struct {
|
|
// Legacy options related to upstream servers
|
|
LegacyUpstreams LegacyUpstreams `cfg:",squash"`
|
|
|
|
// Legacy options for injecting request/response headers
|
|
LegacyHeaders LegacyHeaders `cfg:",squash"`
|
|
|
|
Options Options `cfg:",squash"`
|
|
}
|
|
|
|
func NewLegacyOptions() *LegacyOptions {
|
|
return &LegacyOptions{
|
|
LegacyUpstreams: LegacyUpstreams{
|
|
PassHostHeader: true,
|
|
ProxyWebSockets: true,
|
|
FlushInterval: DefaultUpstreamFlushInterval,
|
|
},
|
|
|
|
LegacyHeaders: LegacyHeaders{
|
|
PassBasicAuth: true,
|
|
PassUserHeaders: true,
|
|
SkipAuthStripHeaders: true,
|
|
},
|
|
|
|
Options: *NewOptions(),
|
|
}
|
|
}
|
|
|
|
func NewLegacyFlagSet() *pflag.FlagSet {
|
|
flagSet := NewFlagSet()
|
|
|
|
flagSet.AddFlagSet(legacyUpstreamsFlagSet())
|
|
flagSet.AddFlagSet(legacyHeadersFlagSet())
|
|
|
|
return flagSet
|
|
}
|
|
|
|
func (l *LegacyOptions) ToOptions() (*Options, error) {
|
|
upstreams, err := l.LegacyUpstreams.convert()
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error converting upstreams: %v", err)
|
|
}
|
|
l.Options.UpstreamServers = upstreams
|
|
|
|
l.Options.InjectRequestHeaders, l.Options.InjectResponseHeaders = l.LegacyHeaders.convert()
|
|
return &l.Options, nil
|
|
}
|
|
|
|
type LegacyUpstreams struct {
|
|
FlushInterval time.Duration `flag:"flush-interval" cfg:"flush_interval"`
|
|
PassHostHeader bool `flag:"pass-host-header" cfg:"pass_host_header"`
|
|
ProxyWebSockets bool `flag:"proxy-websockets" cfg:"proxy_websockets"`
|
|
SSLUpstreamInsecureSkipVerify bool `flag:"ssl-upstream-insecure-skip-verify" cfg:"ssl_upstream_insecure_skip_verify"`
|
|
Upstreams []string `flag:"upstream" cfg:"upstreams"`
|
|
}
|
|
|
|
func legacyUpstreamsFlagSet() *pflag.FlagSet {
|
|
flagSet := pflag.NewFlagSet("upstreams", pflag.ExitOnError)
|
|
|
|
flagSet.Duration("flush-interval", DefaultUpstreamFlushInterval, "period between response flushing when streaming responses")
|
|
flagSet.Bool("pass-host-header", true, "pass the request Host Header to upstream")
|
|
flagSet.Bool("proxy-websockets", true, "enables WebSocket proxying")
|
|
flagSet.Bool("ssl-upstream-insecure-skip-verify", false, "skip validation of certificates presented when using HTTPS upstreams")
|
|
flagSet.StringSlice("upstream", []string{}, "the http url(s) of the upstream endpoint, file:// paths for static files or static://<status_code> for static response. Routing is based on the path")
|
|
|
|
return flagSet
|
|
}
|
|
|
|
func (l *LegacyUpstreams) convert() (Upstreams, error) {
|
|
upstreams := Upstreams{}
|
|
|
|
for _, upstreamString := range l.Upstreams {
|
|
u, err := url.Parse(upstreamString)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("could not parse upstream %q: %v", upstreamString, err)
|
|
}
|
|
|
|
if u.Path == "" {
|
|
u.Path = "/"
|
|
}
|
|
|
|
flushInterval := Duration(l.FlushInterval)
|
|
upstream := Upstream{
|
|
ID: u.Path,
|
|
Path: u.Path,
|
|
URI: upstreamString,
|
|
InsecureSkipTLSVerify: l.SSLUpstreamInsecureSkipVerify,
|
|
PassHostHeader: &l.PassHostHeader,
|
|
ProxyWebSockets: &l.ProxyWebSockets,
|
|
FlushInterval: &flushInterval,
|
|
}
|
|
|
|
switch u.Scheme {
|
|
case "file":
|
|
if u.Fragment != "" {
|
|
upstream.ID = u.Fragment
|
|
upstream.Path = u.Fragment
|
|
// Trim the fragment from the end of the URI
|
|
upstream.URI = strings.SplitN(upstreamString, "#", 2)[0]
|
|
}
|
|
case "static":
|
|
responseCode, err := strconv.Atoi(u.Host)
|
|
if err != nil {
|
|
logger.Errorf("unable to convert %q to int, use default \"200\"", u.Host)
|
|
responseCode = 200
|
|
}
|
|
upstream.Static = true
|
|
upstream.StaticCode = &responseCode
|
|
|
|
// This is not allowed to be empty and must be unique
|
|
upstream.ID = upstreamString
|
|
|
|
// We only support the root path in the legacy config
|
|
upstream.Path = "/"
|
|
|
|
// Force defaults compatible with static responses
|
|
upstream.URI = ""
|
|
upstream.InsecureSkipTLSVerify = false
|
|
upstream.PassHostHeader = nil
|
|
upstream.ProxyWebSockets = nil
|
|
upstream.FlushInterval = nil
|
|
}
|
|
|
|
upstreams = append(upstreams, upstream)
|
|
}
|
|
|
|
return upstreams, nil
|
|
}
|
|
|
|
type LegacyHeaders struct {
|
|
PassBasicAuth bool `flag:"pass-basic-auth" cfg:"pass_basic_auth"`
|
|
PassAccessToken bool `flag:"pass-access-token" cfg:"pass_access_token"`
|
|
PassUserHeaders bool `flag:"pass-user-headers" cfg:"pass_user_headers"`
|
|
PassAuthorization bool `flag:"pass-authorization-header" cfg:"pass_authorization_header"`
|
|
|
|
SetBasicAuth bool `flag:"set-basic-auth" cfg:"set_basic_auth"`
|
|
SetXAuthRequest bool `flag:"set-xauthrequest" cfg:"set_xauthrequest"`
|
|
SetAuthorization bool `flag:"set-authorization-header" cfg:"set_authorization_header"`
|
|
|
|
PreferEmailToUser bool `flag:"prefer-email-to-user" cfg:"prefer_email_to_user"`
|
|
BasicAuthPassword string `flag:"basic-auth-password" cfg:"basic_auth_password"`
|
|
SkipAuthStripHeaders bool `flag:"skip-auth-strip-headers" cfg:"skip_auth_strip_headers"`
|
|
}
|
|
|
|
func legacyHeadersFlagSet() *pflag.FlagSet {
|
|
flagSet := pflag.NewFlagSet("headers", pflag.ExitOnError)
|
|
|
|
flagSet.Bool("pass-basic-auth", true, "pass HTTP Basic Auth, X-Forwarded-User and X-Forwarded-Email information to upstream")
|
|
flagSet.Bool("pass-access-token", false, "pass OAuth access_token to upstream via X-Forwarded-Access-Token header")
|
|
flagSet.Bool("pass-user-headers", true, "pass X-Forwarded-User and X-Forwarded-Email information to upstream")
|
|
flagSet.Bool("pass-authorization-header", false, "pass the Authorization Header to upstream")
|
|
|
|
flagSet.Bool("set-basic-auth", false, "set HTTP Basic Auth information in response (useful in Nginx auth_request mode)")
|
|
flagSet.Bool("set-xauthrequest", false, "set X-Auth-Request-User and X-Auth-Request-Email response headers (useful in Nginx auth_request mode)")
|
|
flagSet.Bool("set-authorization-header", false, "set Authorization response headers (useful in Nginx auth_request mode)")
|
|
|
|
flagSet.Bool("prefer-email-to-user", false, "Prefer to use the Email address as the Username when passing information to upstream. Will only use Username if Email is unavailable, eg. htaccess authentication. Used in conjunction with -pass-basic-auth and -pass-user-headers")
|
|
flagSet.String("basic-auth-password", "", "the password to set when passing the HTTP Basic Auth header")
|
|
flagSet.Bool("skip-auth-strip-headers", true, "strips X-Forwarded-* style authentication headers & Authorization header if they would be set by oauth2-proxy")
|
|
|
|
return flagSet
|
|
}
|
|
|
|
// convert takes the legacy request/response headers and converts them to
|
|
// the new format for InjectRequestHeaders and InjectResponseHeaders
|
|
func (l *LegacyHeaders) convert() ([]Header, []Header) {
|
|
return l.getRequestHeaders(), l.getResponseHeaders()
|
|
}
|
|
|
|
func (l *LegacyHeaders) getRequestHeaders() []Header {
|
|
requestHeaders := []Header{}
|
|
|
|
if l.PassBasicAuth && l.BasicAuthPassword != "" {
|
|
requestHeaders = append(requestHeaders, getBasicAuthHeader(l.PreferEmailToUser, l.BasicAuthPassword))
|
|
}
|
|
|
|
// In the old implementation, PassUserHeaders is a subset of PassBasicAuth
|
|
if l.PassBasicAuth || l.PassUserHeaders {
|
|
requestHeaders = append(requestHeaders, getPassUserHeaders(l.PreferEmailToUser)...)
|
|
requestHeaders = append(requestHeaders, getPreferredUsernameHeader())
|
|
}
|
|
|
|
if l.PassAccessToken {
|
|
requestHeaders = append(requestHeaders, getPassAccessTokenHeader())
|
|
}
|
|
|
|
if l.PassAuthorization {
|
|
requestHeaders = append(requestHeaders, getAuthorizationHeader())
|
|
}
|
|
|
|
for i := range requestHeaders {
|
|
requestHeaders[i].PreserveRequestValue = !l.SkipAuthStripHeaders
|
|
}
|
|
|
|
return requestHeaders
|
|
}
|
|
|
|
func (l *LegacyHeaders) getResponseHeaders() []Header {
|
|
responseHeaders := []Header{}
|
|
|
|
if l.SetXAuthRequest {
|
|
responseHeaders = append(responseHeaders, getXAuthRequestHeaders()...)
|
|
if l.PassAccessToken {
|
|
responseHeaders = append(responseHeaders, getXAuthRequestAccessTokenHeader())
|
|
}
|
|
}
|
|
|
|
if l.SetBasicAuth {
|
|
responseHeaders = append(responseHeaders, getBasicAuthHeader(l.PreferEmailToUser, l.BasicAuthPassword))
|
|
}
|
|
|
|
if l.SetAuthorization {
|
|
responseHeaders = append(responseHeaders, getAuthorizationHeader())
|
|
}
|
|
|
|
return responseHeaders
|
|
}
|
|
|
|
func getBasicAuthHeader(preferEmailToUser bool, basicAuthPassword string) Header {
|
|
claim := "user"
|
|
if preferEmailToUser {
|
|
claim = "email"
|
|
}
|
|
|
|
return Header{
|
|
Name: "Authorization",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: claim,
|
|
Prefix: "Basic ",
|
|
BasicAuthPassword: &SecretSource{
|
|
Value: []byte(basicAuthPassword),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func getPassUserHeaders(preferEmailToUser bool) []Header {
|
|
headers := []Header{
|
|
{
|
|
Name: "X-Forwarded-Groups",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: "groups",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
|
|
if preferEmailToUser {
|
|
return append(headers,
|
|
Header{
|
|
Name: "X-Forwarded-User",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: "email",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
)
|
|
}
|
|
|
|
return append(headers,
|
|
Header{
|
|
Name: "X-Forwarded-User",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: "user",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
Header{
|
|
Name: "X-Forwarded-Email",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: "email",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
)
|
|
}
|
|
|
|
func getPassAccessTokenHeader() Header {
|
|
return Header{
|
|
Name: "X-Forwarded-Access-Token",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: "access_token",
|
|
},
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func getAuthorizationHeader() Header {
|
|
return Header{
|
|
Name: "Authorization",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: "id_token",
|
|
Prefix: "Bearer ",
|
|
},
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func getPreferredUsernameHeader() Header {
|
|
return Header{
|
|
Name: "X-Forwarded-Preferred-Username",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: "preferred_username",
|
|
},
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func getXAuthRequestHeaders() []Header {
|
|
headers := []Header{
|
|
{
|
|
Name: "X-Auth-Request-User",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: "user",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
Name: "X-Auth-Request-Email",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: "email",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
Name: "X-Auth-Request-Preferred-Username",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: "preferred_username",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
Name: "X-Auth-Request-Groups",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: "groups",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
|
|
return headers
|
|
}
|
|
|
|
func getXAuthRequestAccessTokenHeader() Header {
|
|
return Header{
|
|
Name: "X-Auth-Request-Access-Token",
|
|
Values: []HeaderValue{
|
|
{
|
|
ClaimSource: &ClaimSource{
|
|
Claim: "access_token",
|
|
},
|
|
},
|
|
},
|
|
}
|
|
}
|