// Copyright (c) 2015-2021 MinIO, Inc. // // This file is part of MinIO Object Storage stack // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU Affero General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU Affero General Public License for more details. // // You should have received a copy of the GNU Affero General Public License // along with this program. If not, see . package cmd import ( "bufio" "bytes" "context" "crypto/tls" "crypto/x509" "encoding/gob" "encoding/pem" "errors" "fmt" "io/ioutil" "math/rand" "net" "net/http" "net/url" "os" "path" "path/filepath" "runtime" "sort" "strconv" "strings" "syscall" "time" "github.com/dustin/go-humanize" fcolor "github.com/fatih/color" "github.com/go-openapi/loads" "github.com/inconshreveable/mousetrap" dns2 "github.com/miekg/dns" "github.com/minio/cli" consoleCerts "github.com/minio/console/pkg/certs" "github.com/minio/console/restapi" "github.com/minio/console/restapi/operations" "github.com/minio/kes" "github.com/minio/madmin-go" "github.com/minio/minio-go/v7" "github.com/minio/minio-go/v7/pkg/credentials" "github.com/minio/minio-go/v7/pkg/set" "github.com/minio/minio/internal/auth" "github.com/minio/minio/internal/color" "github.com/minio/minio/internal/config" "github.com/minio/minio/internal/handlers" "github.com/minio/minio/internal/kms" "github.com/minio/minio/internal/logger" "github.com/minio/pkg/certs" "github.com/minio/pkg/console" "github.com/minio/pkg/ellipses" "github.com/minio/pkg/env" xnet "github.com/minio/pkg/net" "github.com/rs/dnscache" ) // serverDebugLog will enable debug printing var serverDebugLog = env.Get("_MINIO_SERVER_DEBUG", config.EnableOff) == config.EnableOn var ( shardDiskTimeDelta time.Duration defaultAWSCredProvider []credentials.Provider ) func init() { if runtime.GOOS == "windows" { if mousetrap.StartedByExplorer() { fmt.Printf("Don't double-click %s\n", os.Args[0]) fmt.Println("You need to open cmd.exe/PowerShell and run it from the command line") fmt.Println("Refer to the docs here on how to run it as a Windows Service https://github.com/minio/minio-service/tree/master/windows") fmt.Println("Press the Enter Key to Exit") fmt.Scanln() os.Exit(1) } } rand.Seed(time.Now().UTC().UnixNano()) logger.Init(GOPATH, GOROOT) logger.RegisterError(config.FmtError) initGlobalContext() options := dnscache.ResolverRefreshOptions{ ClearUnused: true, PersistOnFailure: false, } globalIsCICD = env.Get("MINIO_CI_CD", "") != "" || env.Get("CI", "") != "" containers := IsKubernetes() || IsDocker() || IsBOSH() || IsDCOS() || IsPCFTile() // Call to refresh will refresh names in cache. If you pass true, it will also // remove cached names not looked up since the last call to Refresh. It is a good idea // to call this method on a regular interval. go func() { var t *time.Ticker if containers { t = time.NewTicker(1 * time.Minute) } else { t = time.NewTicker(10 * time.Minute) } defer t.Stop() for { select { case <-t.C: globalDNSCache.RefreshWithOptions(options) case <-GlobalContext.Done(): return } } }() globalForwarder = handlers.NewForwarder(&handlers.Forwarder{ PassHost: true, RoundTripper: newGatewayHTTPTransport(1 * time.Hour), Logger: func(err error) { if err != nil && !errors.Is(err, context.Canceled) { logger.LogIf(GlobalContext, err) } }, }) console.SetColor("Debug", fcolor.New()) gob.Register(StorageErr("")) gob.Register(madmin.TimeInfo{}) gob.Register(map[string]interface{}{}) defaultAWSCredProvider = []credentials.Provider{ &credentials.IAM{ Client: &http.Client{ Transport: NewGatewayHTTPTransport(), }, }, } var err error shardDiskTimeDelta, err = time.ParseDuration(env.Get("_MINIO_SHARD_DISKTIME_DELTA", "1m")) if err != nil { shardDiskTimeDelta = 1 * time.Minute } // All minio-go API operations shall be performed only once, // another way to look at this is we are turning off retries. minio.MaxRetry = 1 } const consolePrefix = "CONSOLE_" func minioConfigToConsoleFeatures() { os.Setenv("CONSOLE_PBKDF_SALT", globalDeploymentID) os.Setenv("CONSOLE_PBKDF_PASSPHRASE", globalDeploymentID) if globalMinioEndpoint != "" { os.Setenv("CONSOLE_MINIO_SERVER", globalMinioEndpoint) } else { os.Setenv("CONSOLE_MINIO_SERVER", getAPIEndpoints()[0]) } if value := env.Get("MINIO_LOG_QUERY_URL", ""); value != "" { os.Setenv("CONSOLE_LOG_QUERY_URL", value) if value := env.Get("MINIO_LOG_QUERY_AUTH_TOKEN", ""); value != "" { os.Setenv("CONSOLE_LOG_QUERY_AUTH_TOKEN", value) } } // pass the console subpath configuration if value := env.Get(config.EnvMinIOBrowserRedirectURL, ""); value != "" { subPath := path.Clean(pathJoin(strings.TrimSpace(globalBrowserRedirectURL.Path), SlashSeparator)) if subPath != SlashSeparator { os.Setenv("CONSOLE_SUBPATH", subPath) } } // Enable if prometheus URL is set. if value := env.Get("MINIO_PROMETHEUS_URL", ""); value != "" { os.Setenv("CONSOLE_PROMETHEUS_URL", value) if value := env.Get("MINIO_PROMETHEUS_JOB_ID", "minio-job"); value != "" { os.Setenv("CONSOLE_PROMETHEUS_JOB_ID", value) // Support additional labels for more granular filtering. if value := env.Get("MINIO_PROMETHEUS_EXTRA_LABELS", ""); value != "" { os.Setenv("CONSOLE_PROMETHEUS_EXTRA_LABELS", value) } } } // Enable if LDAP is enabled. if globalLDAPConfig.Enabled { os.Setenv("CONSOLE_LDAP_ENABLED", config.EnableOn) } // if IDP is enabled, set IDP environment variables if globalOpenIDConfig.ProviderCfgs[config.Default] != nil { os.Setenv("CONSOLE_IDP_URL", globalOpenIDConfig.ProviderCfgs[config.Default].URL.String()) os.Setenv("CONSOLE_IDP_CLIENT_ID", globalOpenIDConfig.ProviderCfgs[config.Default].ClientID) os.Setenv("CONSOLE_IDP_SECRET", globalOpenIDConfig.ProviderCfgs[config.Default].ClientSecret) os.Setenv("CONSOLE_IDP_HMAC_SALT", globalDeploymentID) os.Setenv("CONSOLE_IDP_HMAC_PASSPHRASE", globalOpenIDConfig.ProviderCfgs[config.Default].ClientID) os.Setenv("CONSOLE_IDP_SCOPES", strings.Join(globalOpenIDConfig.ProviderCfgs[config.Default].DiscoveryDoc.ScopesSupported, ",")) if globalOpenIDConfig.ProviderCfgs[config.Default].ClaimUserinfo { os.Setenv("CONSOLE_IDP_USERINFO", config.EnableOn) } if globalOpenIDConfig.ProviderCfgs[config.Default].RedirectURIDynamic { // Enable dynamic redirect-uri's based on incoming 'host' header, // Overrides any other callback URL. os.Setenv("CONSOLE_IDP_CALLBACK_DYNAMIC", config.EnableOn) } if globalOpenIDConfig.ProviderCfgs[config.Default].RedirectURI != "" { os.Setenv("CONSOLE_IDP_CALLBACK", globalOpenIDConfig.ProviderCfgs[config.Default].RedirectURI) } else { os.Setenv("CONSOLE_IDP_CALLBACK", getConsoleEndpoints()[0]+"/oauth_callback") } } os.Setenv("CONSOLE_MINIO_REGION", globalSite.Region) os.Setenv("CONSOLE_CERT_PASSWD", env.Get("MINIO_CERT_PASSWD", "")) if globalSubnetConfig.License != "" { os.Setenv("CONSOLE_SUBNET_LICENSE", globalSubnetConfig.License) } if globalSubnetConfig.APIKey != "" { os.Setenv("CONSOLE_SUBNET_API_KEY", globalSubnetConfig.APIKey) } if globalSubnetConfig.ProxyURL != nil { os.Setenv("CONSOLE_SUBNET_PROXY", globalSubnetConfig.ProxyURL.String()) } } func initConsoleServer() (*restapi.Server, error) { // unset all console_ environment variables. for _, cenv := range env.List(consolePrefix) { os.Unsetenv(cenv) } // enable all console environment variables minioConfigToConsoleFeatures() // set certs dir to minio directory consoleCerts.GlobalCertsDir = &consoleCerts.ConfigDir{ Path: globalCertsDir.Get(), } consoleCerts.GlobalCertsCADir = &consoleCerts.ConfigDir{ Path: globalCertsCADir.Get(), } swaggerSpec, err := loads.Embedded(restapi.SwaggerJSON, restapi.FlatSwaggerJSON) if err != nil { return nil, err } api := operations.NewConsoleAPI(swaggerSpec) if !serverDebugLog { // Disable console logging if server debug log is not enabled noLog := func(string, ...interface{}) {} restapi.LogInfo = noLog restapi.LogError = noLog api.Logger = noLog } server := restapi.NewServer(api) // register all APIs server.ConfigureAPI() restapi.GlobalRootCAs, restapi.GlobalPublicCerts, restapi.GlobalTLSCertsManager = globalRootCAs, globalPublicCerts, globalTLSCerts consolePort, _ := strconv.Atoi(globalMinioConsolePort) server.Host = globalMinioConsoleHost server.Port = consolePort restapi.Port = globalMinioConsolePort restapi.Hostname = globalMinioConsoleHost if globalIsTLS { // If TLS certificates are provided enforce the HTTPS. server.EnabledListeners = []string{"https"} server.TLSPort = consolePort // Need to store tls-port, tls-host un config variables so secure.middleware can read from there restapi.TLSPort = globalMinioConsolePort restapi.Hostname = globalMinioConsoleHost } return server, nil } func verifyObjectLayerFeatures(name string, objAPI ObjectLayer) { if strings.HasPrefix(name, "gateway") { if GlobalGatewaySSE.IsSet() && GlobalKMS == nil { uiErr := config.ErrInvalidGWSSEEnvValue(nil).Msg("MINIO_GATEWAY_SSE set but KMS is not configured") logger.Fatal(uiErr, "Unable to start gateway with SSE") } } globalCompressConfigMu.Lock() if globalCompressConfig.Enabled && !objAPI.IsCompressionSupported() { logger.Fatal(errInvalidArgument, "Compression support is requested but '%s' does not support compression", name) } globalCompressConfigMu.Unlock() } // Check for updates and print a notification message func checkUpdate(mode string) { updateURL := minioReleaseInfoURL if runtime.GOOS == globalWindowsOSName { updateURL = minioReleaseWindowsInfoURL } u, err := url.Parse(updateURL) if err != nil { return } // Its OK to ignore any errors during doUpdate() here. crTime, err := GetCurrentReleaseTime() if err != nil { return } _, lrTime, err := getLatestReleaseTime(u, 2*time.Second, mode) if err != nil { return } var older time.Duration var downloadURL string if lrTime.After(crTime) { older = lrTime.Sub(crTime) downloadURL = getDownloadURL(releaseTimeToReleaseTag(lrTime)) } updateMsg := prepareUpdateMessage(downloadURL, older) if updateMsg == "" { return } logger.Info(prepareUpdateMessage("Run `mc admin update`", lrTime.Sub(crTime))) } func newConfigDirFromCtx(ctx *cli.Context, option string, getDefaultDir func() string) (*ConfigDir, bool) { var dir string var dirSet bool switch { case ctx.IsSet(option): dir = ctx.String(option) dirSet = true case ctx.GlobalIsSet(option): dir = ctx.GlobalString(option) dirSet = true // cli package does not expose parent's option option. Below code is workaround. if dir == "" || dir == getDefaultDir() { dirSet = false // Unset to false since GlobalIsSet() true is a false positive. if ctx.Parent().GlobalIsSet(option) { dir = ctx.Parent().GlobalString(option) dirSet = true } } default: // Neither local nor global option is provided. In this case, try to use // default directory. dir = getDefaultDir() if dir == "" { logger.FatalIf(errInvalidArgument, "%s option must be provided", option) } } if dir == "" { logger.FatalIf(errors.New("empty directory"), "%s directory cannot be empty", option) } // Disallow relative paths, figure out absolute paths. dirAbs, err := filepath.Abs(dir) logger.FatalIf(err, "Unable to fetch absolute path for %s=%s", option, dir) logger.FatalIf(mkdirAllIgnorePerm(dirAbs), "Unable to create directory specified %s=%s", option, dir) return &ConfigDir{path: dirAbs}, dirSet } func handleCommonCmdArgs(ctx *cli.Context) { // Get "json" flag from command line argument and // enable json and quite modes if json flag is turned on. globalCLIContext.JSON = ctx.IsSet("json") || ctx.GlobalIsSet("json") if globalCLIContext.JSON { logger.EnableJSON() } // Get quiet flag from command line argument. globalCLIContext.Quiet = ctx.IsSet("quiet") || ctx.GlobalIsSet("quiet") if globalCLIContext.Quiet { logger.EnableQuiet() } // Get anonymous flag from command line argument. globalCLIContext.Anonymous = ctx.IsSet("anonymous") || ctx.GlobalIsSet("anonymous") if globalCLIContext.Anonymous { logger.EnableAnonymous() } // Fetch address option addr := ctx.GlobalString("address") if addr == "" || addr == ":"+GlobalMinioDefaultPort { addr = ctx.String("address") } // Fetch console address option consoleAddr := ctx.GlobalString("console-address") if consoleAddr == "" { consoleAddr = ctx.String("console-address") } if consoleAddr == "" { p, err := xnet.GetFreePort() if err != nil { logger.FatalIf(err, "Unable to get free port for console on the host") } globalMinioConsolePortAuto = true consoleAddr = net.JoinHostPort("", p.String()) } if _, _, err := net.SplitHostPort(consoleAddr); err != nil { logger.FatalIf(err, "Unable to start listening on console port") } if consoleAddr == addr { logger.FatalIf(errors.New("--console-address cannot be same as --address"), "Unable to start the server") } globalMinioHost, globalMinioPort = mustSplitHostPort(addr) globalMinioConsoleHost, globalMinioConsolePort = mustSplitHostPort(consoleAddr) if globalMinioPort == globalMinioConsolePort { logger.FatalIf(errors.New("--console-address port cannot be same as --address port"), "Unable to start the server") } globalMinioAddr = addr // Check "no-compat" flag from command line argument. globalCLIContext.StrictS3Compat = true if ctx.IsSet("no-compat") || ctx.GlobalIsSet("no-compat") { globalCLIContext.StrictS3Compat = false } // Set all config, certs and CAs directories. var configSet, certsSet bool globalConfigDir, configSet = newConfigDirFromCtx(ctx, "config-dir", defaultConfigDir.Get) globalCertsDir, certsSet = newConfigDirFromCtx(ctx, "certs-dir", defaultCertsDir.Get) // Remove this code when we deprecate and remove config-dir. // This code is to make sure we inherit from the config-dir // option if certs-dir is not provided. if !certsSet && configSet { globalCertsDir = &ConfigDir{path: filepath.Join(globalConfigDir.Get(), certsDir)} } globalCertsCADir = &ConfigDir{path: filepath.Join(globalCertsDir.Get(), certsCADir)} logger.FatalIf(mkdirAllIgnorePerm(globalCertsCADir.Get()), "Unable to create certs CA directory at %s", globalCertsCADir.Get()) } type envKV struct { Key string Value string Skip bool } func (e envKV) String() string { if e.Skip { return "" } return fmt.Sprintf("%s=%s", e.Key, e.Value) } func parsEnvEntry(envEntry string) (envKV, error) { envEntry = strings.TrimSpace(envEntry) if envEntry == "" { // Skip all empty lines return envKV{ Skip: true, }, nil } const envSeparator = "=" envTokens := strings.SplitN(strings.TrimSpace(strings.TrimPrefix(envEntry, "export")), envSeparator, 2) if len(envTokens) != 2 { return envKV{}, fmt.Errorf("envEntry malformed; %s, expected to be of form 'KEY=value'", envEntry) } key := envTokens[0] val := envTokens[1] if strings.HasPrefix(key, "#") { // Skip commented lines return envKV{ Skip: true, }, nil } // Remove quotes from the value if found if len(val) >= 2 { quote := val[0] if (quote == '"' || quote == '\'') && val[len(val)-1] == quote { val = val[1 : len(val)-1] } } return envKV{ Key: key, Value: val, }, nil } // Similar to os.Environ returns a copy of strings representing // the environment values from a file, in the form "key, value". // in a structured form. func minioEnvironFromFile(envConfigFile string) ([]envKV, error) { f, err := os.Open(envConfigFile) if err != nil { return nil, err } defer f.Close() var ekvs []envKV scanner := bufio.NewScanner(f) for scanner.Scan() { ekv, err := parsEnvEntry(scanner.Text()) if err != nil { return nil, err } if ekv.Skip { // Skips empty lines continue } ekvs = append(ekvs, ekv) } if err = scanner.Err(); err != nil { return nil, err } return ekvs, nil } func readFromSecret(sp string) (string, error) { // Supports reading path from docker secrets, filename is // relative to /run/secrets/ position. if isFile(pathJoin("/run/secrets/", sp)) { sp = pathJoin("/run/secrets/", sp) } credBuf, err := ioutil.ReadFile(sp) if err != nil { if os.IsNotExist(err) { // ignore if file doesn't exist. return "", nil } return "", err } return string(bytes.TrimSpace(credBuf)), nil } func loadEnvVarsFromFiles() { if env.IsSet(config.EnvAccessKeyFile) { accessKey, err := readFromSecret(env.Get(config.EnvAccessKeyFile, "")) if err != nil { logger.Fatal(config.ErrInvalidCredentials(err), "Unable to validate credentials inherited from the secret file(s)") } if accessKey != "" { os.Setenv(config.EnvRootUser, accessKey) } } if env.IsSet(config.EnvSecretKeyFile) { secretKey, err := readFromSecret(env.Get(config.EnvSecretKeyFile, "")) if err != nil { logger.Fatal(config.ErrInvalidCredentials(err), "Unable to validate credentials inherited from the secret file(s)") } if secretKey != "" { os.Setenv(config.EnvRootPassword, secretKey) } } if env.IsSet(config.EnvRootUserFile) { rootUser, err := readFromSecret(env.Get(config.EnvRootUserFile, "")) if err != nil { logger.Fatal(config.ErrInvalidCredentials(err), "Unable to validate credentials inherited from the secret file(s)") } if rootUser != "" { os.Setenv(config.EnvRootUser, rootUser) } } if env.IsSet(config.EnvRootPasswordFile) { rootPassword, err := readFromSecret(env.Get(config.EnvRootPasswordFile, "")) if err != nil { logger.Fatal(config.ErrInvalidCredentials(err), "Unable to validate credentials inherited from the secret file(s)") } if rootPassword != "" { os.Setenv(config.EnvRootPassword, rootPassword) } } if env.IsSet(config.EnvKMSSecretKeyFile) { kmsSecret, err := readFromSecret(env.Get(config.EnvKMSSecretKeyFile, "")) if err != nil { logger.Fatal(err, "Unable to read the KMS secret key inherited from secret file") } if kmsSecret != "" { os.Setenv(config.EnvKMSSecretKey, kmsSecret) } } if env.IsSet(config.EnvConfigEnvFile) { ekvs, err := minioEnvironFromFile(env.Get(config.EnvConfigEnvFile, "")) if err != nil && !os.IsNotExist(err) { logger.Fatal(err, "Unable to read the config environment file") } for _, ekv := range ekvs { os.Setenv(ekv.Key, ekv.Value) } } } func handleCommonEnvVars() { loadEnvVarsFromFiles() var err error globalBrowserEnabled, err = config.ParseBool(env.Get(config.EnvBrowser, config.EnableOn)) if err != nil { logger.Fatal(config.ErrInvalidBrowserValue(err), "Invalid MINIO_BROWSER value in environment variable") } if globalBrowserEnabled { if redirectURL := env.Get(config.EnvMinIOBrowserRedirectURL, ""); redirectURL != "" { u, err := xnet.ParseHTTPURL(redirectURL) if err != nil { logger.Fatal(err, "Invalid MINIO_BROWSER_REDIRECT_URL value in environment variable") } // Look for if URL has invalid values and return error. if !((u.Scheme == "http" || u.Scheme == "https") && u.Opaque == "" && !u.ForceQuery && u.RawQuery == "" && u.Fragment == "") { err := fmt.Errorf("URL contains unexpected resources, expected URL to be of http(s)://minio.example.com format: %v", u) logger.Fatal(err, "Invalid MINIO_BROWSER_REDIRECT_URL value is environment variable") } globalBrowserRedirectURL = u } } if serverURL := env.Get(config.EnvMinIOServerURL, ""); serverURL != "" { u, err := xnet.ParseHTTPURL(serverURL) if err != nil { logger.Fatal(err, "Invalid MINIO_SERVER_URL value in environment variable") } // Look for if URL has invalid values and return error. if !((u.Scheme == "http" || u.Scheme == "https") && (u.Path == "/" || u.Path == "") && u.Opaque == "" && !u.ForceQuery && u.RawQuery == "" && u.Fragment == "") { err := fmt.Errorf("URL contains unexpected resources, expected URL to be of http(s)://minio.example.com format: %v", u) logger.Fatal(err, "Invalid MINIO_SERVER_URL value is environment variable") } u.Path = "" // remove any path component such as `/` globalMinioEndpoint = u.String() } globalFSOSync, err = config.ParseBool(env.Get(config.EnvFSOSync, config.EnableOff)) if err != nil { logger.Fatal(config.ErrInvalidFSOSyncValue(err), "Invalid MINIO_FS_OSYNC value in environment variable") } if rootDiskSize := env.Get(config.EnvRootDiskThresholdSize, ""); rootDiskSize != "" { size, err := humanize.ParseBytes(rootDiskSize) if err != nil { logger.Fatal(err, fmt.Sprintf("Invalid %s value in environment variable", config.EnvRootDiskThresholdSize)) } globalRootDiskThreshold = size } domains := env.Get(config.EnvDomain, "") if len(domains) != 0 { for _, domainName := range strings.Split(domains, config.ValueSeparator) { if _, ok := dns2.IsDomainName(domainName); !ok { logger.Fatal(config.ErrInvalidDomainValue(nil).Msg("Unknown value `%s`", domainName), "Invalid MINIO_DOMAIN value in environment variable") } globalDomainNames = append(globalDomainNames, domainName) } sort.Strings(globalDomainNames) lcpSuf := lcpSuffix(globalDomainNames) for _, domainName := range globalDomainNames { if domainName == lcpSuf && len(globalDomainNames) > 1 { logger.Fatal(config.ErrOverlappingDomainValue(nil).Msg("Overlapping domains `%s` not allowed", globalDomainNames), "Invalid MINIO_DOMAIN value in environment variable") } } } publicIPs := env.Get(config.EnvPublicIPs, "") if len(publicIPs) != 0 { minioEndpoints := strings.Split(publicIPs, config.ValueSeparator) domainIPs := set.NewStringSet() for _, endpoint := range minioEndpoints { if net.ParseIP(endpoint) == nil { // Checking if the IP is a DNS entry. addrs, err := globalDNSCache.LookupHost(GlobalContext, endpoint) if err != nil { logger.FatalIf(err, "Unable to initialize MinIO server with [%s] invalid entry found in MINIO_PUBLIC_IPS", endpoint) } for _, addr := range addrs { domainIPs.Add(addr) } } domainIPs.Add(endpoint) } updateDomainIPs(domainIPs) } else { // Add found interfaces IP address to global domain IPS, // loopback addresses will be naturally dropped. domainIPs := mustGetLocalIP4() for _, host := range globalEndpoints.Hostnames() { domainIPs.Add(host) } updateDomainIPs(domainIPs) } // In place update is true by default if the MINIO_UPDATE is not set // or is not set to 'off', if MINIO_UPDATE is set to 'off' then // in-place update is off. globalInplaceUpdateDisabled = strings.EqualFold(env.Get(config.EnvUpdate, config.EnableOn), config.EnableOff) // Check if the supported credential env vars, // "MINIO_ROOT_USER" and "MINIO_ROOT_PASSWORD" are provided // Warn user if deprecated environment variables, // "MINIO_ACCESS_KEY" and "MINIO_SECRET_KEY", are defined // Check all error conditions first //nolint:gocritic if !env.IsSet(config.EnvRootUser) && env.IsSet(config.EnvRootPassword) { logger.Fatal(config.ErrMissingEnvCredentialRootUser(nil), "Unable to start MinIO") } else if env.IsSet(config.EnvRootUser) && !env.IsSet(config.EnvRootPassword) { logger.Fatal(config.ErrMissingEnvCredentialRootPassword(nil), "Unable to start MinIO") } else if !env.IsSet(config.EnvRootUser) && !env.IsSet(config.EnvRootPassword) { if !env.IsSet(config.EnvAccessKey) && env.IsSet(config.EnvSecretKey) { logger.Fatal(config.ErrMissingEnvCredentialAccessKey(nil), "Unable to start MinIO") } else if env.IsSet(config.EnvAccessKey) && !env.IsSet(config.EnvSecretKey) { logger.Fatal(config.ErrMissingEnvCredentialSecretKey(nil), "Unable to start MinIO") } } // At this point, either both environment variables // are defined or both are not defined. // Check both cases and authenticate them if correctly defined var user, password string var hasCredentials bool //nolint:gocritic if env.IsSet(config.EnvRootUser) && env.IsSet(config.EnvRootPassword) { user = env.Get(config.EnvRootUser, "") password = env.Get(config.EnvRootPassword, "") hasCredentials = true } else if env.IsSet(config.EnvAccessKey) && env.IsSet(config.EnvSecretKey) { user = env.Get(config.EnvAccessKey, "") password = env.Get(config.EnvSecretKey, "") hasCredentials = true } if hasCredentials { cred, err := auth.CreateCredentials(user, password) if err != nil { logger.Fatal(config.ErrInvalidCredentials(err), "Unable to validate credentials inherited from the shell environment") } if env.IsSet(config.EnvAccessKey) && env.IsSet(config.EnvSecretKey) { msg := fmt.Sprintf("WARNING: %s and %s are deprecated.\n"+ " Please use %s and %s", config.EnvAccessKey, config.EnvSecretKey, config.EnvRootUser, config.EnvRootPassword) logger.Info(color.RedBold(msg)) } globalActiveCred = cred } switch { case env.IsSet(config.EnvKMSSecretKey) && env.IsSet(config.EnvKESEndpoint): logger.Fatal(errors.New("ambigious KMS configuration"), fmt.Sprintf("The environment contains %q as well as %q", config.EnvKMSSecretKey, config.EnvKESEndpoint)) } if env.IsSet(config.EnvKMSSecretKey) { GlobalKMS, err = kms.Parse(env.Get(config.EnvKMSSecretKey, "")) if err != nil { logger.Fatal(err, "Unable to parse the KMS secret key inherited from the shell environment") } } if env.IsSet(config.EnvKESEndpoint) { var endpoints []string for _, endpoint := range strings.Split(env.Get(config.EnvKESEndpoint, ""), ",") { if strings.TrimSpace(endpoint) == "" { continue } if !ellipses.HasEllipses(endpoint) { endpoints = append(endpoints, endpoint) continue } patterns, err := ellipses.FindEllipsesPatterns(endpoint) if err != nil { logger.Fatal(err, fmt.Sprintf("Invalid KES endpoint %q", endpoint)) } for _, lbls := range patterns.Expand() { endpoints = append(endpoints, strings.Join(lbls, "")) } } // Manually load the certificate and private key into memory. // We need to check whether the private key is encrypted, and // if so, decrypt it using the user-provided password. certBytes, err := os.ReadFile(env.Get(config.EnvKESClientCert, "")) if err != nil { logger.Fatal(err, "Unable to load KES client certificate as specified by the shell environment") } keyBytes, err := os.ReadFile(env.Get(config.EnvKESClientKey, "")) if err != nil { logger.Fatal(err, "Unable to load KES client private key as specified by the shell environment") } privateKeyPEM, rest := pem.Decode(bytes.TrimSpace(keyBytes)) if len(rest) != 0 { logger.Fatal(errors.New("private key contains additional data"), "Unable to load KES client private key as specified by the shell environment") } if x509.IsEncryptedPEMBlock(privateKeyPEM) { keyBytes, err = x509.DecryptPEMBlock(privateKeyPEM, []byte(env.Get(config.EnvKESClientPassword, ""))) if err != nil { logger.Fatal(err, "Unable to decrypt KES client private key as specified by the shell environment") } keyBytes = pem.EncodeToMemory(&pem.Block{Type: privateKeyPEM.Type, Bytes: keyBytes}) } certificate, err := tls.X509KeyPair(certBytes, keyBytes) if err != nil { logger.Fatal(err, "Unable to load KES client certificate as specified by the shell environment") } rootCAs, err := certs.GetRootCAs(env.Get(config.EnvKESServerCA, globalCertsCADir.Get())) if err != nil { logger.Fatal(err, fmt.Sprintf("Unable to load X.509 root CAs for KES from %q", env.Get(config.EnvKESServerCA, globalCertsCADir.Get()))) } defaultKeyID := env.Get(config.EnvKESKeyName, "") KMS, err := kms.NewWithConfig(kms.Config{ Endpoints: endpoints, DefaultKeyID: defaultKeyID, Certificate: certificate, RootCAs: rootCAs, }) if err != nil { logger.Fatal(err, "Unable to initialize a connection to KES as specified by the shell environment") } // We check that the default key ID exists or try to create it otherwise. // This implicitly checks that we can communicate to KES. We don't treat // a policy error as failure condition since MinIO may not have the permission // to create keys - just to generate/decrypt data encryption keys. if err = KMS.CreateKey(defaultKeyID); err != nil && !errors.Is(err, kes.ErrKeyExists) && !errors.Is(err, kes.ErrNotAllowed) { logger.Fatal(err, "Unable to initialize a connection to KES as specified by the shell environment") } GlobalKMS = KMS } } func getTLSConfig() (x509Certs []*x509.Certificate, manager *certs.Manager, secureConn bool, err error) { if !(isFile(getPublicCertFile()) && isFile(getPrivateKeyFile())) { return nil, nil, false, nil } if x509Certs, err = config.ParsePublicCertFile(getPublicCertFile()); err != nil { return nil, nil, false, err } manager, err = certs.NewManager(GlobalContext, getPublicCertFile(), getPrivateKeyFile(), config.LoadX509KeyPair) if err != nil { return nil, nil, false, err } // MinIO has support for multiple certificates. It expects the following structure: // certs/ // │ // ├─ public.crt // ├─ private.key // │ // ├─ example.com/ // │ │ // │ ├─ public.crt // │ └─ private.key // └─ foobar.org/ // │ // ├─ public.crt // └─ private.key // ... // // Therefore, we read all filenames in the cert directory and check // for each directory whether it contains a public.crt and private.key. // If so, we try to add it to certificate manager. root, err := os.Open(globalCertsDir.Get()) if err != nil { return nil, nil, false, err } defer root.Close() files, err := root.Readdir(-1) if err != nil { return nil, nil, false, err } for _, file := range files { // Ignore all // - regular files // - "CAs" directory // - any directory which starts with ".." if file.Mode().IsRegular() || file.Name() == "CAs" || strings.HasPrefix(file.Name(), "..") { continue } if file.Mode()&os.ModeSymlink == os.ModeSymlink { file, err = os.Stat(filepath.Join(root.Name(), file.Name())) if err != nil { // not accessible ignore continue } if !file.IsDir() { continue } } var ( certFile = filepath.Join(root.Name(), file.Name(), publicCertFile) keyFile = filepath.Join(root.Name(), file.Name(), privateKeyFile) ) if !isFile(certFile) || !isFile(keyFile) { continue } if err = manager.AddCertificate(certFile, keyFile); err != nil { err = fmt.Errorf("Unable to load TLS certificate '%s,%s': %w", certFile, keyFile, err) logger.LogIf(GlobalContext, err, logger.Minio) } } secureConn = true // Certs might be symlinks, reload them every 10 seconds. manager.UpdateReloadDuration(10 * time.Second) // syscall.SIGHUP to reload the certs. manager.ReloadOnSignal(syscall.SIGHUP) return x509Certs, manager, secureConn, nil } // contextCanceled returns whether a context is canceled. func contextCanceled(ctx context.Context) bool { select { case <-ctx.Done(): return true default: return false } } // bgContext returns a context that can be used for async operations. // Cancellation/timeouts are removed, so parent cancellations/timeout will // not propagate from parent. // Context values are preserved. // This can be used for goroutines that live beyond the parent context. func bgContext(parent context.Context) context.Context { return bgCtx{parent: parent} } type bgCtx struct { parent context.Context } func (a bgCtx) Done() <-chan struct{} { return nil } func (a bgCtx) Err() error { return nil } func (a bgCtx) Deadline() (deadline time.Time, ok bool) { return time.Time{}, false } func (a bgCtx) Value(key interface{}) interface{} { return a.parent.Value(key) }