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server.go
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package server
import (
"context"
"crypto/tls"
"fmt"
"io/fs"
"math"
"net"
"net/http"
"net/url"
"os"
"os/exec"
"regexp"
"strings"
gosync "sync"
"time"
// nolint:staticcheck
golang_proto "github.com/golang/protobuf/proto"
"github.com/argoproj/pkg/sync"
"github.com/dgrijalva/jwt-go/v4"
"github.com/go-redis/redis/v8"
"github.com/gorilla/handlers"
grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
grpc_auth "github.com/grpc-ecosystem/go-grpc-middleware/auth"
grpc_logrus "github.com/grpc-ecosystem/go-grpc-middleware/logging/logrus"
grpc_prometheus "github.com/grpc-ecosystem/go-grpc-prometheus"
"github.com/grpc-ecosystem/grpc-gateway/runtime"
"github.com/improbable-eng/grpc-web/go/grpcweb"
log "github.com/sirupsen/logrus"
"github.com/soheilhy/cmux"
netCtx "golang.org/x/net/context"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/reflection"
"google.golang.org/grpc/status"
"gopkg.in/yaml.v2"
v1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/cache"
"github.com/argoproj/argo-cd/v2/common"
"github.com/argoproj/argo-cd/v2/pkg/apiclient"
accountpkg "github.com/argoproj/argo-cd/v2/pkg/apiclient/account"
applicationpkg "github.com/argoproj/argo-cd/v2/pkg/apiclient/application"
certificatepkg "github.com/argoproj/argo-cd/v2/pkg/apiclient/certificate"
clusterpkg "github.com/argoproj/argo-cd/v2/pkg/apiclient/cluster"
gpgkeypkg "github.com/argoproj/argo-cd/v2/pkg/apiclient/gpgkey"
projectpkg "github.com/argoproj/argo-cd/v2/pkg/apiclient/project"
repocredspkg "github.com/argoproj/argo-cd/v2/pkg/apiclient/repocreds"
repositorypkg "github.com/argoproj/argo-cd/v2/pkg/apiclient/repository"
sessionpkg "github.com/argoproj/argo-cd/v2/pkg/apiclient/session"
settingspkg "github.com/argoproj/argo-cd/v2/pkg/apiclient/settings"
versionpkg "github.com/argoproj/argo-cd/v2/pkg/apiclient/version"
"github.com/argoproj/argo-cd/v2/pkg/apis/application/v1alpha1"
appclientset "github.com/argoproj/argo-cd/v2/pkg/client/clientset/versioned"
appinformer "github.com/argoproj/argo-cd/v2/pkg/client/informers/externalversions"
applisters "github.com/argoproj/argo-cd/v2/pkg/client/listers/application/v1alpha1"
repoapiclient "github.com/argoproj/argo-cd/v2/reposerver/apiclient"
repocache "github.com/argoproj/argo-cd/v2/reposerver/cache"
"github.com/argoproj/argo-cd/v2/server/account"
"github.com/argoproj/argo-cd/v2/server/application"
"github.com/argoproj/argo-cd/v2/server/badge"
servercache "github.com/argoproj/argo-cd/v2/server/cache"
"github.com/argoproj/argo-cd/v2/server/certificate"
"github.com/argoproj/argo-cd/v2/server/cluster"
"github.com/argoproj/argo-cd/v2/server/gpgkey"
"github.com/argoproj/argo-cd/v2/server/logout"
"github.com/argoproj/argo-cd/v2/server/metrics"
"github.com/argoproj/argo-cd/v2/server/project"
"github.com/argoproj/argo-cd/v2/server/rbacpolicy"
"github.com/argoproj/argo-cd/v2/server/repocreds"
"github.com/argoproj/argo-cd/v2/server/repository"
"github.com/argoproj/argo-cd/v2/server/session"
"github.com/argoproj/argo-cd/v2/server/settings"
"github.com/argoproj/argo-cd/v2/server/version"
"github.com/argoproj/argo-cd/v2/ui"
"github.com/argoproj/argo-cd/v2/util/assets"
cacheutil "github.com/argoproj/argo-cd/v2/util/cache"
"github.com/argoproj/argo-cd/v2/util/db"
"github.com/argoproj/argo-cd/v2/util/dex"
dexutil "github.com/argoproj/argo-cd/v2/util/dex"
"github.com/argoproj/argo-cd/v2/util/env"
"github.com/argoproj/argo-cd/v2/util/errors"
grpc_util "github.com/argoproj/argo-cd/v2/util/grpc"
"github.com/argoproj/argo-cd/v2/util/healthz"
httputil "github.com/argoproj/argo-cd/v2/util/http"
"github.com/argoproj/argo-cd/v2/util/io"
jwtutil "github.com/argoproj/argo-cd/v2/util/jwt"
kubeutil "github.com/argoproj/argo-cd/v2/util/kube"
"github.com/argoproj/argo-cd/v2/util/oidc"
"github.com/argoproj/argo-cd/v2/util/rbac"
util_session "github.com/argoproj/argo-cd/v2/util/session"
settings_util "github.com/argoproj/argo-cd/v2/util/settings"
"github.com/argoproj/argo-cd/v2/util/swagger"
tlsutil "github.com/argoproj/argo-cd/v2/util/tls"
"github.com/argoproj/argo-cd/v2/util/webhook"
)
const maxConcurrentLoginRequestsCountEnv = "ARGOCD_MAX_CONCURRENT_LOGIN_REQUESTS_COUNT"
const replicasCountEnv = "ARGOCD_API_SERVER_REPLICAS"
const renewTokenKey = "renew-token"
// ErrNoSession indicates no auth token was supplied as part of a request
var ErrNoSession = status.Errorf(codes.Unauthenticated, "no session information")
var noCacheHeaders = map[string]string{
"Expires": time.Unix(0, 0).Format(time.RFC1123),
"Cache-Control": "no-cache, private, max-age=0",
"Pragma": "no-cache",
"X-Accel-Expires": "0",
}
var backoff = wait.Backoff{
Steps: 5,
Duration: 500 * time.Millisecond,
Factor: 1.0,
Jitter: 0.1,
}
var (
clientConstraint = fmt.Sprintf(">= %s", common.MinClientVersion)
baseHRefRegex = regexp.MustCompile(`<base href="(.*)">`)
// limits number of concurrent login requests to prevent password brute forcing. If set to 0 then no limit is enforced.
maxConcurrentLoginRequestsCount = 50
replicasCount = 1
enableGRPCTimeHistogram = true
)
func init() {
maxConcurrentLoginRequestsCount = env.ParseNumFromEnv(maxConcurrentLoginRequestsCountEnv, maxConcurrentLoginRequestsCount, 0, math.MaxInt32)
replicasCount = env.ParseNumFromEnv(replicasCountEnv, replicasCount, 0, math.MaxInt32)
if replicasCount > 0 {
maxConcurrentLoginRequestsCount = maxConcurrentLoginRequestsCount / replicasCount
}
enableGRPCTimeHistogram = os.Getenv(common.EnvEnableGRPCTimeHistogramEnv) == "true"
}
// ArgoCDServer is the API server for Argo CD
type ArgoCDServer struct {
ArgoCDServerOpts
ssoClientApp *oidc.ClientApp
settings *settings_util.ArgoCDSettings
log *log.Entry
sessionMgr *util_session.SessionManager
settingsMgr *settings_util.SettingsManager
enf *rbac.Enforcer
projInformer cache.SharedIndexInformer
projLister applisters.AppProjectNamespaceLister
policyEnforcer *rbacpolicy.RBACPolicyEnforcer
appInformer cache.SharedIndexInformer
appLister applisters.ApplicationNamespaceLister
// stopCh is the channel which when closed, will shutdown the Argo CD server
stopCh chan struct{}
userStateStorage util_session.UserStateStorage
indexDataInit gosync.Once
indexData []byte
indexDataErr error
staticAssets http.FileSystem
}
type ArgoCDServerOpts struct {
DisableAuth bool
EnableGZip bool
Insecure bool
StaticAssetsDir string
ListenPort int
MetricsPort int
Namespace string
DexServerAddr string
BaseHRef string
RootPath string
KubeClientset kubernetes.Interface
AppClientset appclientset.Interface
RepoClientset repoapiclient.Clientset
Cache *servercache.Cache
RedisClient *redis.Client
TLSConfigCustomizer tlsutil.ConfigCustomizer
XFrameOptions string
ListenHost string
}
// initializeDefaultProject creates the default project if it does not already exist
func initializeDefaultProject(opts ArgoCDServerOpts) error {
defaultProj := &v1alpha1.AppProject{
ObjectMeta: metav1.ObjectMeta{Name: v1alpha1.DefaultAppProjectName, Namespace: opts.Namespace},
Spec: v1alpha1.AppProjectSpec{
SourceRepos: []string{"*"},
Destinations: []v1alpha1.ApplicationDestination{{Server: "*", Namespace: "*"}},
ClusterResourceWhitelist: []metav1.GroupKind{{Group: "*", Kind: "*"}},
},
}
_, err := opts.AppClientset.ArgoprojV1alpha1().AppProjects(opts.Namespace).Get(context.Background(), defaultProj.Name, metav1.GetOptions{})
if apierrors.IsNotFound(err) {
_, err = opts.AppClientset.ArgoprojV1alpha1().AppProjects(opts.Namespace).Create(context.Background(), defaultProj, metav1.CreateOptions{})
if apierrors.IsAlreadyExists(err) {
return nil
}
}
return err
}
// NewServer returns a new instance of the Argo CD API server
func NewServer(ctx context.Context, opts ArgoCDServerOpts) *ArgoCDServer {
settingsMgr := settings_util.NewSettingsManager(ctx, opts.KubeClientset, opts.Namespace)
settings, err := settingsMgr.InitializeSettings(opts.Insecure)
errors.CheckError(err)
err = initializeDefaultProject(opts)
errors.CheckError(err)
factory := appinformer.NewSharedInformerFactoryWithOptions(opts.AppClientset, 0, appinformer.WithNamespace(opts.Namespace), appinformer.WithTweakListOptions(func(options *metav1.ListOptions) {}))
projInformer := factory.Argoproj().V1alpha1().AppProjects().Informer()
projLister := factory.Argoproj().V1alpha1().AppProjects().Lister().AppProjects(opts.Namespace)
appInformer := factory.Argoproj().V1alpha1().Applications().Informer()
appLister := factory.Argoproj().V1alpha1().Applications().Lister().Applications(opts.Namespace)
userStateStorage := util_session.NewUserStateStorage(opts.RedisClient)
sessionMgr := util_session.NewSessionManager(settingsMgr, projLister, opts.DexServerAddr, userStateStorage)
enf := rbac.NewEnforcer(opts.KubeClientset, opts.Namespace, common.ArgoCDRBACConfigMapName, nil)
enf.EnableEnforce(!opts.DisableAuth)
err = enf.SetBuiltinPolicy(assets.BuiltinPolicyCSV)
errors.CheckError(err)
enf.EnableLog(os.Getenv(common.EnvVarRBACDebug) == "1")
policyEnf := rbacpolicy.NewRBACPolicyEnforcer(enf, projLister)
enf.SetClaimsEnforcerFunc(policyEnf.EnforceClaims)
var staticFS fs.FS = io.NewSubDirFS("dist/app", ui.Embedded)
if opts.StaticAssetsDir != "" {
staticFS = io.NewComposableFS(staticFS, os.DirFS(opts.StaticAssetsDir))
}
return &ArgoCDServer{
ArgoCDServerOpts: opts,
log: log.NewEntry(log.StandardLogger()),
settings: settings,
sessionMgr: sessionMgr,
settingsMgr: settingsMgr,
enf: enf,
projInformer: projInformer,
projLister: projLister,
appInformer: appInformer,
appLister: appLister,
policyEnforcer: policyEnf,
userStateStorage: userStateStorage,
staticAssets: http.FS(staticFS),
}
}
const (
// catches corrupted informer state; see https://github.com/argoproj/argo-cd/issues/4960 for more information
notObjectErrMsg = "object does not implement the Object interfaces"
)
func (a *ArgoCDServer) healthCheck(r *http.Request) error {
if val, ok := r.URL.Query()["full"]; ok && len(val) > 0 && val[0] == "true" {
argoDB := db.NewDB(a.Namespace, a.settingsMgr, a.KubeClientset)
_, err := argoDB.ListClusters(r.Context())
if err != nil && strings.Contains(err.Error(), notObjectErrMsg) {
return err
}
}
return nil
}
// Run runs the API Server
// We use k8s.io/code-generator/cmd/go-to-protobuf to generate the .proto files from the API types.
// k8s.io/ go-to-protobuf uses protoc-gen-gogo, which comes from gogo/protobuf (a fork of
// golang/protobuf).
func (a *ArgoCDServer) Run(ctx context.Context, port int, metricsPort int) {
a.userStateStorage.Init(ctx)
grpcS := a.newGRPCServer()
grpcWebS := grpcweb.WrapServer(grpcS)
var httpS *http.Server
var httpsS *http.Server
if a.useTLS() {
httpS = newRedirectServer(port, a.RootPath)
httpsS = a.newHTTPServer(ctx, port, grpcWebS)
} else {
httpS = a.newHTTPServer(ctx, port, grpcWebS)
}
if a.RootPath != "" {
httpS.Handler = withRootPath(httpS.Handler, a)
if httpsS != nil {
httpsS.Handler = withRootPath(httpsS.Handler, a)
}
}
httpS.Handler = &bug21955Workaround{handler: httpS.Handler}
if httpsS != nil {
httpsS.Handler = &bug21955Workaround{handler: httpsS.Handler}
}
metricsServ := metrics.NewMetricsServer(a.ListenHost, metricsPort)
if a.RedisClient != nil {
cacheutil.CollectMetrics(a.RedisClient, metricsServ)
}
// Start listener
var conn net.Listener
var realErr error
_ = wait.ExponentialBackoff(backoff, func() (bool, error) {
conn, realErr = net.Listen("tcp", fmt.Sprintf("%s:%d", a.ListenHost, port))
if realErr != nil {
a.log.Warnf("failed listen: %v", realErr)
return false, nil
}
return true, nil
})
errors.CheckError(realErr)
// CMux is used to support servicing gRPC and HTTP1.1+JSON on the same port
tcpm := cmux.New(conn)
var tlsm cmux.CMux
var grpcL net.Listener
var httpL net.Listener
var httpsL net.Listener
if !a.useTLS() {
httpL = tcpm.Match(cmux.HTTP1Fast())
grpcL = tcpm.MatchWithWriters(cmux.HTTP2MatchHeaderFieldSendSettings("content-type", "application/grpc"))
} else {
// We first match on HTTP 1.1 methods.
httpL = tcpm.Match(cmux.HTTP1Fast())
// If not matched, we assume that its TLS.
tlsl := tcpm.Match(cmux.Any())
tlsConfig := tls.Config{
Certificates: []tls.Certificate{*a.settings.Certificate},
}
if a.TLSConfigCustomizer != nil {
a.TLSConfigCustomizer(&tlsConfig)
}
tlsl = tls.NewListener(tlsl, &tlsConfig)
// Now, we build another mux recursively to match HTTPS and gRPC.
tlsm = cmux.New(tlsl)
httpsL = tlsm.Match(cmux.HTTP1Fast())
grpcL = tlsm.MatchWithWriters(cmux.HTTP2MatchHeaderFieldSendSettings("content-type", "application/grpc"))
}
// Start the muxed listeners for our servers
log.Infof("argocd %s serving on port %d (url: %s, tls: %v, namespace: %s, sso: %v)",
common.GetVersion(), port, a.settings.URL, a.useTLS(), a.Namespace, a.settings.IsSSOConfigured())
go a.projInformer.Run(ctx.Done())
go a.appInformer.Run(ctx.Done())
go func() { a.checkServeErr("grpcS", grpcS.Serve(grpcL)) }()
go func() { a.checkServeErr("httpS", httpS.Serve(httpL)) }()
if a.useTLS() {
go func() { a.checkServeErr("httpsS", httpsS.Serve(httpsL)) }()
go func() { a.checkServeErr("tlsm", tlsm.Serve()) }()
}
go a.watchSettings()
go a.rbacPolicyLoader(ctx)
go func() { a.checkServeErr("tcpm", tcpm.Serve()) }()
go func() { a.checkServeErr("metrics", metricsServ.ListenAndServe()) }()
if !cache.WaitForCacheSync(ctx.Done(), a.projInformer.HasSynced, a.appInformer.HasSynced) {
log.Fatal("Timed out waiting for project cache to sync")
}
a.stopCh = make(chan struct{})
<-a.stopCh
errors.CheckError(conn.Close())
if err := metricsServ.Shutdown(ctx); err != nil {
log.Fatalf("Failed to gracefully shutdown metrics server: %v", err)
}
}
func (a *ArgoCDServer) Initialized() bool {
return a.projInformer.HasSynced() && a.appInformer.HasSynced()
}
// checkServeErr checks the error from a .Serve() call to decide if it was a graceful shutdown
func (a *ArgoCDServer) checkServeErr(name string, err error) {
if err != nil {
if a.stopCh == nil {
// a nil stopCh indicates a graceful shutdown
log.Infof("graceful shutdown %s: %v", name, err)
} else {
log.Fatalf("%s: %v", name, err)
}
} else {
log.Infof("graceful shutdown %s", name)
}
}
// Shutdown stops the Argo CD server
func (a *ArgoCDServer) Shutdown() {
log.Info("Shut down requested")
stopCh := a.stopCh
a.stopCh = nil
if stopCh != nil {
close(stopCh)
}
}
// watchSettings watches the configmap and secret for any setting updates that would warrant a
// restart of the API server.
func (a *ArgoCDServer) watchSettings() {
updateCh := make(chan *settings_util.ArgoCDSettings, 1)
a.settingsMgr.Subscribe(updateCh)
prevURL := a.settings.URL
prevOIDCConfig := a.settings.OIDCConfigRAW
prevDexCfgBytes, err := dex.GenerateDexConfigYAML(a.settings)
errors.CheckError(err)
prevGitHubSecret := a.settings.WebhookGitHubSecret
prevGitLabSecret := a.settings.WebhookGitLabSecret
prevBitbucketUUID := a.settings.WebhookBitbucketUUID
prevBitbucketServerSecret := a.settings.WebhookBitbucketServerSecret
prevGogsSecret := a.settings.WebhookGogsSecret
var prevCert, prevCertKey string
if a.settings.Certificate != nil && !a.ArgoCDServerOpts.Insecure {
prevCert, prevCertKey = tlsutil.EncodeX509KeyPairString(*a.settings.Certificate)
}
for {
newSettings := <-updateCh
a.settings = newSettings
newDexCfgBytes, err := dex.GenerateDexConfigYAML(a.settings)
errors.CheckError(err)
if string(newDexCfgBytes) != string(prevDexCfgBytes) {
log.Infof("dex config modified. restarting")
break
}
if prevOIDCConfig != a.settings.OIDCConfigRAW {
log.Infof("oidc config modified. restarting")
break
}
if prevURL != a.settings.URL {
log.Infof("url modified. restarting")
break
}
if prevGitHubSecret != a.settings.WebhookGitHubSecret {
log.Infof("github secret modified. restarting")
break
}
if prevGitLabSecret != a.settings.WebhookGitLabSecret {
log.Infof("gitlab secret modified. restarting")
break
}
if prevBitbucketUUID != a.settings.WebhookBitbucketUUID {
log.Infof("bitbucket uuid modified. restarting")
break
}
if prevBitbucketServerSecret != a.settings.WebhookBitbucketServerSecret {
log.Infof("bitbucket server secret modified. restarting")
break
}
if prevGogsSecret != a.settings.WebhookGogsSecret {
log.Infof("gogs secret modified. restarting")
break
}
if !a.ArgoCDServerOpts.Insecure {
var newCert, newCertKey string
if a.settings.Certificate != nil {
newCert, newCertKey = tlsutil.EncodeX509KeyPairString(*a.settings.Certificate)
}
if newCert != prevCert || newCertKey != prevCertKey {
log.Infof("tls certificate modified. restarting")
break
}
}
}
log.Info("shutting down settings watch")
a.Shutdown()
a.settingsMgr.Unsubscribe(updateCh)
close(updateCh)
}
func (a *ArgoCDServer) rbacPolicyLoader(ctx context.Context) {
err := a.enf.RunPolicyLoader(ctx, func(cm *v1.ConfigMap) error {
var scopes []string
if scopesStr, ok := cm.Data[rbac.ConfigMapScopesKey]; len(scopesStr) > 0 && ok {
scopes = make([]string, 0)
err := yaml.Unmarshal([]byte(scopesStr), &scopes)
if err != nil {
return err
}
}
a.policyEnforcer.SetScopes(scopes)
return nil
})
errors.CheckError(err)
}
func (a *ArgoCDServer) useTLS() bool {
if a.Insecure || a.settings.Certificate == nil {
return false
}
return true
}
func (a *ArgoCDServer) newGRPCServer() *grpc.Server {
if enableGRPCTimeHistogram {
grpc_prometheus.EnableHandlingTimeHistogram()
}
sOpts := []grpc.ServerOption{
// Set the both send and receive the bytes limit to be 100MB
// The proper way to achieve high performance is to have pagination
// while we work toward that, we can have high limit first
grpc.MaxRecvMsgSize(apiclient.MaxGRPCMessageSize),
grpc.MaxSendMsgSize(apiclient.MaxGRPCMessageSize),
grpc.ConnectionTimeout(300 * time.Second),
}
sensitiveMethods := map[string]bool{
"/cluster.ClusterService/Create": true,
"/cluster.ClusterService/Update": true,
"/session.SessionService/Create": true,
"/account.AccountService/UpdatePassword": true,
"/gpgkey.GPGKeyService/CreateGnuPGPublicKey": true,
"/repository.RepositoryService/Create": true,
"/repository.RepositoryService/Update": true,
"/repository.RepositoryService/CreateRepository": true,
"/repository.RepositoryService/UpdateRepository": true,
"/repository.RepositoryService/ValidateAccess": true,
"/repocreds.RepoCredsService/CreateRepositoryCredentials": true,
"/repocreds.RepoCredsService/UpdateRepositoryCredentials": true,
"/application.ApplicationService/PatchResource": true,
}
// NOTE: notice we do not configure the gRPC server here with TLS (e.g. grpc.Creds(creds))
// This is because TLS handshaking occurs in cmux handling
sOpts = append(sOpts, grpc.StreamInterceptor(grpc_middleware.ChainStreamServer(
grpc_logrus.StreamServerInterceptor(a.log),
grpc_prometheus.StreamServerInterceptor,
grpc_auth.StreamServerInterceptor(a.Authenticate),
grpc_util.UserAgentStreamServerInterceptor(common.ArgoCDUserAgentName, clientConstraint),
grpc_util.PayloadStreamServerInterceptor(a.log, true, func(ctx netCtx.Context, fullMethodName string, servingObject interface{}) bool {
return !sensitiveMethods[fullMethodName]
}),
grpc_util.ErrorCodeK8sStreamServerInterceptor(),
grpc_util.ErrorCodeGitStreamServerInterceptor(),
grpc_util.PanicLoggerStreamServerInterceptor(a.log),
)))
sOpts = append(sOpts, grpc.UnaryInterceptor(grpc_middleware.ChainUnaryServer(
bug21955WorkaroundInterceptor,
grpc_logrus.UnaryServerInterceptor(a.log),
grpc_prometheus.UnaryServerInterceptor,
grpc_auth.UnaryServerInterceptor(a.Authenticate),
grpc_util.UserAgentUnaryServerInterceptor(common.ArgoCDUserAgentName, clientConstraint),
grpc_util.PayloadUnaryServerInterceptor(a.log, true, func(ctx netCtx.Context, fullMethodName string, servingObject interface{}) bool {
return !sensitiveMethods[fullMethodName]
}),
grpc_util.ErrorCodeK8sUnaryServerInterceptor(),
grpc_util.ErrorCodeGitUnaryServerInterceptor(),
grpc_util.PanicLoggerUnaryServerInterceptor(a.log),
)))
grpcS := grpc.NewServer(sOpts...)
db := db.NewDB(a.Namespace, a.settingsMgr, a.KubeClientset)
kubectl := kubeutil.NewKubectl()
clusterService := cluster.NewServer(db, a.enf, a.Cache, kubectl)
repoService := repository.NewServer(a.RepoClientset, db, a.enf, a.Cache, a.appLister, a.projLister, a.settingsMgr)
repoCredsService := repocreds.NewServer(a.RepoClientset, db, a.enf, a.settingsMgr)
var loginRateLimiter func() (io.Closer, error)
if maxConcurrentLoginRequestsCount > 0 {
loginRateLimiter = session.NewLoginRateLimiter(maxConcurrentLoginRequestsCount)
}
sessionService := session.NewServer(a.sessionMgr, a.settingsMgr, a, a.policyEnforcer, loginRateLimiter)
projectLock := sync.NewKeyLock()
applicationService := application.NewServer(
a.Namespace,
a.KubeClientset,
a.AppClientset,
a.appLister,
a.appInformer,
a.RepoClientset,
a.Cache,
kubectl,
db,
a.enf,
projectLock,
a.settingsMgr,
a.projInformer)
projectService := project.NewServer(a.Namespace, a.KubeClientset, a.AppClientset, a.enf, projectLock, a.sessionMgr, a.policyEnforcer, a.projInformer, a.settingsMgr, db)
settingsService := settings.NewServer(a.settingsMgr, a, a.DisableAuth)
accountService := account.NewServer(a.sessionMgr, a.settingsMgr, a.enf)
certificateService := certificate.NewServer(a.RepoClientset, db, a.enf)
gpgkeyService := gpgkey.NewServer(a.RepoClientset, db, a.enf)
versionpkg.RegisterVersionServiceServer(grpcS, version.NewServer(a, func() (bool, error) {
if a.DisableAuth {
return true, nil
}
sett, err := a.settingsMgr.GetSettings()
if err != nil {
return false, err
}
return sett.AnonymousUserEnabled, err
}))
clusterpkg.RegisterClusterServiceServer(grpcS, clusterService)
applicationpkg.RegisterApplicationServiceServer(grpcS, applicationService)
repositorypkg.RegisterRepositoryServiceServer(grpcS, repoService)
repocredspkg.RegisterRepoCredsServiceServer(grpcS, repoCredsService)
sessionpkg.RegisterSessionServiceServer(grpcS, sessionService)
settingspkg.RegisterSettingsServiceServer(grpcS, settingsService)
projectpkg.RegisterProjectServiceServer(grpcS, projectService)
accountpkg.RegisterAccountServiceServer(grpcS, accountService)
certificatepkg.RegisterCertificateServiceServer(grpcS, certificateService)
gpgkeypkg.RegisterGPGKeyServiceServer(grpcS, gpgkeyService)
// Register reflection service on gRPC server.
reflection.Register(grpcS)
grpc_prometheus.Register(grpcS)
errors.CheckError(projectService.NormalizeProjs())
return grpcS
}
// translateGrpcCookieHeader conditionally sets a cookie on the response.
func (a *ArgoCDServer) translateGrpcCookieHeader(ctx context.Context, w http.ResponseWriter, resp golang_proto.Message) error {
if sessionResp, ok := resp.(*sessionpkg.SessionResponse); ok {
token := sessionResp.Token
err := a.setTokenCookie(token, w)
if err != nil {
return err
}
} else if md, ok := runtime.ServerMetadataFromContext(ctx); ok {
renewToken := md.HeaderMD[renewTokenKey]
if len(renewToken) > 0 {
return a.setTokenCookie(renewToken[0], w)
}
}
return nil
}
func (a *ArgoCDServer) setTokenCookie(token string, w http.ResponseWriter) error {
cookiePath := fmt.Sprintf("path=/%s", strings.TrimRight(strings.TrimLeft(a.ArgoCDServerOpts.BaseHRef, "/"), "/"))
flags := []string{cookiePath, "SameSite=lax", "httpOnly"}
if !a.Insecure {
flags = append(flags, "Secure")
}
cookies, err := httputil.MakeCookieMetadata(common.AuthCookieName, token, flags...)
if err != nil {
return err
}
for _, cookie := range cookies {
w.Header().Add("Set-Cookie", cookie)
}
return nil
}
func withRootPath(handler http.Handler, a *ArgoCDServer) http.Handler {
// get rid of slashes
root := strings.TrimRight(strings.TrimLeft(a.RootPath, "/"), "/")
mux := http.NewServeMux()
mux.Handle("/"+root+"/", http.StripPrefix("/"+root, handler))
healthz.ServeHealthCheck(mux, a.healthCheck)
return mux
}
func compressHandler(handler http.Handler) http.Handler {
compr := handlers.CompressHandler(handler)
return http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
if request.Header.Get("Accept") == "text/event-stream" {
handler.ServeHTTP(writer, request)
} else {
compr.ServeHTTP(writer, request)
}
})
}
// newHTTPServer returns the HTTP server to serve HTTP/HTTPS requests. This is implemented
// using grpc-gateway as a proxy to the gRPC server.
func (a *ArgoCDServer) newHTTPServer(ctx context.Context, port int, grpcWebHandler http.Handler) *http.Server {
endpoint := fmt.Sprintf("localhost:%d", port)
mux := http.NewServeMux()
httpS := http.Server{
Addr: endpoint,
Handler: &handlerSwitcher{
handler: mux,
urlToHandler: map[string]http.Handler{
"/api/badge": badge.NewHandler(a.AppClientset, a.settingsMgr, a.Namespace),
common.LogoutEndpoint: logout.NewHandler(a.AppClientset, a.settingsMgr, a.sessionMgr, a.ArgoCDServerOpts.RootPath, a.ArgoCDServerOpts.BaseHRef, a.Namespace),
},
contentTypeToHandler: map[string]http.Handler{
"application/grpc-web+proto": grpcWebHandler,
},
},
}
var dOpts []grpc.DialOption
dOpts = append(dOpts, grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(apiclient.MaxGRPCMessageSize)))
dOpts = append(dOpts, grpc.WithUserAgent(fmt.Sprintf("%s/%s", common.ArgoCDUserAgentName, common.GetVersion().Version)))
if a.useTLS() {
// The following sets up the dial Options for grpc-gateway to talk to gRPC server over TLS.
// grpc-gateway is just translating HTTP/HTTPS requests as gRPC requests over localhost,
// so we need to supply the same certificates to establish the connections that a normal,
// external gRPC client would need.
tlsConfig := a.settings.TLSConfig()
if a.TLSConfigCustomizer != nil {
a.TLSConfigCustomizer(tlsConfig)
}
tlsConfig.InsecureSkipVerify = true
dCreds := credentials.NewTLS(tlsConfig)
dOpts = append(dOpts, grpc.WithTransportCredentials(dCreds))
} else {
dOpts = append(dOpts, grpc.WithInsecure())
}
// HTTP 1.1+JSON Server
// grpc-ecosystem/grpc-gateway is used to proxy HTTP requests to the corresponding gRPC call
// NOTE: if a marshaller option is not supplied, grpc-gateway will default to the jsonpb from
// golang/protobuf. Which does not support types such as time.Time. gogo/protobuf does support
// time.Time, but does not support custom UnmarshalJSON() and MarshalJSON() methods. Therefore
// we use our own Marshaler
gwMuxOpts := runtime.WithMarshalerOption(runtime.MIMEWildcard, new(grpc_util.JSONMarshaler))
gwCookieOpts := runtime.WithForwardResponseOption(a.translateGrpcCookieHeader)
gwmux := runtime.NewServeMux(gwMuxOpts, gwCookieOpts)
var handler http.Handler = gwmux
if a.EnableGZip {
handler = compressHandler(handler)
}
mux.Handle("/api/", handler)
mustRegisterGWHandler(versionpkg.RegisterVersionServiceHandlerFromEndpoint, ctx, gwmux, endpoint, dOpts)
mustRegisterGWHandler(clusterpkg.RegisterClusterServiceHandlerFromEndpoint, ctx, gwmux, endpoint, dOpts)
mustRegisterGWHandler(applicationpkg.RegisterApplicationServiceHandlerFromEndpoint, ctx, gwmux, endpoint, dOpts)
mustRegisterGWHandler(repositorypkg.RegisterRepositoryServiceHandlerFromEndpoint, ctx, gwmux, endpoint, dOpts)
mustRegisterGWHandler(repocredspkg.RegisterRepoCredsServiceHandlerFromEndpoint, ctx, gwmux, endpoint, dOpts)
mustRegisterGWHandler(sessionpkg.RegisterSessionServiceHandlerFromEndpoint, ctx, gwmux, endpoint, dOpts)
mustRegisterGWHandler(settingspkg.RegisterSettingsServiceHandlerFromEndpoint, ctx, gwmux, endpoint, dOpts)
mustRegisterGWHandler(projectpkg.RegisterProjectServiceHandlerFromEndpoint, ctx, gwmux, endpoint, dOpts)
mustRegisterGWHandler(accountpkg.RegisterAccountServiceHandlerFromEndpoint, ctx, gwmux, endpoint, dOpts)
mustRegisterGWHandler(certificatepkg.RegisterCertificateServiceHandlerFromEndpoint, ctx, gwmux, endpoint, dOpts)
mustRegisterGWHandler(gpgkeypkg.RegisterGPGKeyServiceHandlerFromEndpoint, ctx, gwmux, endpoint, dOpts)
// Swagger UI
swagger.ServeSwaggerUI(mux, assets.SwaggerJSON, "/swagger-ui", a.RootPath)
healthz.ServeHealthCheck(mux, a.healthCheck)
// Dex reverse proxy and client app and OAuth2 login/callback
a.registerDexHandlers(mux)
// Webhook handler for git events (Note: cache timeouts are hardcoded because API server does not write to cache and not really using them)
argoDB := db.NewDB(a.Namespace, a.settingsMgr, a.KubeClientset)
acdWebhookHandler := webhook.NewHandler(a.Namespace, a.AppClientset, a.settings, a.settingsMgr, repocache.NewCache(a.Cache.GetCache(), 24*time.Hour, 3*time.Minute), a.Cache, argoDB)
mux.HandleFunc("/api/webhook", acdWebhookHandler.Handler)
// Serve cli binaries directly from API server
registerDownloadHandlers(mux, "/download")
// Serve extensions
var extensionsApiPath = "/extensions/"
var extensionsSharedPath = "/tmp/extensions/"
extHandler := http.StripPrefix(extensionsApiPath, http.FileServer(http.Dir(extensionsSharedPath)))
mux.HandleFunc(extensionsApiPath, extHandler.ServeHTTP)
// Serve UI static assets
var assetsHandler http.Handler = http.HandlerFunc(a.newStaticAssetsHandler())
if a.ArgoCDServerOpts.EnableGZip {
assetsHandler = compressHandler(assetsHandler)
}
mux.Handle("/", assetsHandler)
return &httpS
}
// registerDexHandlers will register dex HTTP handlers, creating the the OAuth client app
func (a *ArgoCDServer) registerDexHandlers(mux *http.ServeMux) {
if !a.settings.IsSSOConfigured() {
return
}
// Run dex OpenID Connect Identity Provider behind a reverse proxy (served at /api/dex)
var err error
mux.HandleFunc(common.DexAPIEndpoint+"/", dexutil.NewDexHTTPReverseProxy(a.DexServerAddr, a.BaseHRef))
if a.useTLS() {
tlsConfig := a.settings.TLSConfig()
tlsConfig.InsecureSkipVerify = true
}
a.ssoClientApp, err = oidc.NewClientApp(a.settings, a.Cache, a.DexServerAddr, a.BaseHRef)
errors.CheckError(err)
mux.HandleFunc(common.LoginEndpoint, a.ssoClientApp.HandleLogin)
mux.HandleFunc(common.CallbackEndpoint, a.ssoClientApp.HandleCallback)
}
// newRedirectServer returns an HTTP server which does a 307 redirect to the HTTPS server
func newRedirectServer(port int, rootPath string) *http.Server {
addr := fmt.Sprintf("localhost:%d/%s", port, strings.TrimRight(strings.TrimLeft(rootPath, "/"), "/"))
return &http.Server{
Addr: addr,
Handler: http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
target := "https://" + req.Host
if rootPath != "" {
target += "/" + strings.TrimRight(strings.TrimLeft(rootPath, "/"), "/")
}
target += req.URL.Path
if len(req.URL.RawQuery) > 0 {
target += "?" + req.URL.RawQuery
}
http.Redirect(w, req, target, http.StatusTemporaryRedirect)
}),
}
}
// registerDownloadHandlers registers HTTP handlers to support downloads directly from the API server
// (e.g. argocd CLI)
func registerDownloadHandlers(mux *http.ServeMux, base string) {
linuxPath, err := exec.LookPath("argocd")
if err != nil {
log.Warnf("argocd not in PATH")
} else {
mux.HandleFunc(base+"/argocd-linux-amd64", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, linuxPath)
})
}
darwinPath, err := exec.LookPath("argocd-darwin-amd64")
if err != nil {
log.Warnf("argocd-darwin-amd64 not in PATH")
} else {
mux.HandleFunc(base+"/argocd-darwin-amd64", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, darwinPath)
})
}
windowsPath, err := exec.LookPath("argocd-windows-amd64.exe")
if err != nil {
log.Warnf("argocd-windows-amd64.exe not in PATH")
} else {
mux.HandleFunc(base+"/argocd-windows-amd64.exe", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, windowsPath)
})
}
}
func (s *ArgoCDServer) getIndexData() ([]byte, error) {
s.indexDataInit.Do(func() {
data, err := ui.Embedded.ReadFile("dist/app/index.html")
if err != nil {
s.indexDataErr = err
return
}
if s.BaseHRef == "/" || s.BaseHRef == "" {
s.indexData = data
} else {
s.indexData = []byte(baseHRefRegex.ReplaceAllString(string(data), fmt.Sprintf(`<base href="/%s/">`, strings.Trim(s.BaseHRef, "/"))))
}
})
return s.indexData, s.indexDataErr
}
func (server *ArgoCDServer) uiAssetExists(filename string) bool {
f, err := server.staticAssets.Open(strings.Trim(filename, "/"))
if err != nil {
return false
}
defer io.Close(f)
stat, err := f.Stat()
if err != nil {
return false
}
return !stat.IsDir()
}
// newStaticAssetsHandler returns an HTTP handler to serve UI static assets
func (server *ArgoCDServer) newStaticAssetsHandler() func(http.ResponseWriter, *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
acceptHTML := false
for _, acceptType := range strings.Split(r.Header.Get("Accept"), ",") {
if acceptType == "text/html" || acceptType == "html" {
acceptHTML = true
break
}
}
fileRequest := r.URL.Path != "/index.html" && server.uiAssetExists(r.URL.Path)
// Set X-Frame-Options according to configuration
if server.XFrameOptions != "" {
w.Header().Set("X-Frame-Options", server.XFrameOptions)
}
w.Header().Set("X-XSS-Protection", "1")
// serve index.html for non file requests to support HTML5 History API
if acceptHTML && !fileRequest && (r.Method == "GET" || r.Method == "HEAD") {
for k, v := range noCacheHeaders {
w.Header().Set(k, v)
}
data, err := server.getIndexData()
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
modTime, err := time.Parse(common.GetVersion().BuildDate, time.RFC3339)
if err != nil {
modTime = time.Now()
}
http.ServeContent(w, r, "index.html", modTime, io.NewByteReadSeeker(data))
} else {
http.FileServer(server.staticAssets).ServeHTTP(w, r)
}
}
}
type registerFunc func(ctx context.Context, mux *runtime.ServeMux, endpoint string, opts []grpc.DialOption) error
// mustRegisterGWHandler is a convenience function to register a gateway handler
func mustRegisterGWHandler(register registerFunc, ctx context.Context, mux *runtime.ServeMux, endpoint string, opts []grpc.DialOption) {
err := register(ctx, mux, endpoint, opts)
if err != nil {
panic(err)
}
}
// Authenticate checks for the presence of a valid token when accessing server-side resources.
func (a *ArgoCDServer) Authenticate(ctx context.Context) (context.Context, error) {
if a.DisableAuth {
return ctx, nil
}
claims, newToken, claimsErr := a.getClaims(ctx)
if claims != nil {
// Add claims to the context to inspect for RBAC
// nolint:staticcheck
ctx = context.WithValue(ctx, "claims", claims)
if newToken != "" {
// Session tokens that are expiring soon should be regenerated if user stays active.
// The renewed token is stored in outgoing ServerMetadata. Metadata is available to grpc-gateway
// response forwarder that will translate it into Set-Cookie header.
if err := grpc.SendHeader(ctx, metadata.New(map[string]string{renewTokenKey: newToken})); err != nil {
log.Warnf("Failed to set %s header", renewTokenKey)
}
}
}
if claimsErr != nil {
// nolint:staticcheck
ctx = context.WithValue(ctx, util_session.AuthErrorCtxKey, claimsErr)
}
if claimsErr != nil {
argoCDSettings, err := a.settingsMgr.GetSettings()
if err != nil {
return ctx, status.Errorf(codes.Internal, "unable to load settings: %v", err)
}
if !argoCDSettings.AnonymousUserEnabled {
return ctx, claimsErr
}
}
return ctx, nil
}
func (a *ArgoCDServer) getClaims(ctx context.Context) (jwt.Claims, string, error) {
md, ok := metadata.FromIncomingContext(ctx)
if !ok {
return nil, "", ErrNoSession
}
tokenString := getToken(md)
if tokenString == "" {
return nil, "", ErrNoSession
}
claims, newToken, err := a.sessionMgr.VerifyToken(tokenString)
if err != nil {
return claims, "", status.Errorf(codes.Unauthenticated, "invalid session: %v", err)
}
return claims, newToken, nil
}
// getToken extracts the token from gRPC metadata or cookie headers
func getToken(md metadata.MD) string {
// check the "token" metadata
{
tokens, ok := md[apiclient.MetaDataTokenKey]
if ok && len(tokens) > 0 {
return tokens[0]
}
}
// looks for the HTTP header `Authorization: Bearer ...`
// argocd prefers bearer token over cookie
for _, t := range md["authorization"] {
token := strings.TrimPrefix(t, "Bearer ")
if strings.HasPrefix(t, "Bearer ") && jwtutil.IsValid(token) {
return token
}
}
// check the HTTP cookie
for _, t := range md["grpcgateway-cookie"] {
header := http.Header{}
header.Add("Cookie", t)
request := http.Request{Header: header}
token, err := httputil.JoinCookies(common.AuthCookieName, request.Cookies())
if err == nil && jwtutil.IsValid(token) {
return token