package config import ( "encoding/base64" "encoding/json" "errors" "fmt" "io/ioutil" "net" "net/url" "os" "path" "path/filepath" "reflect" "regexp" "sort" "strconv" "strings" "time" "github.com/armon/go-metrics/prometheus" "github.com/hashicorp/go-bexpr" "github.com/hashicorp/go-hclog" "github.com/hashicorp/go-multierror" "github.com/hashicorp/go-sockaddr/template" "github.com/hashicorp/memberlist" "golang.org/x/time/rate" "github.com/hashicorp/consul/agent/cache" "github.com/hashicorp/consul/agent/checks" "github.com/hashicorp/consul/agent/connect/ca" "github.com/hashicorp/consul/agent/consul" "github.com/hashicorp/consul/agent/consul/authmethod/ssoauth" "github.com/hashicorp/consul/agent/dns" "github.com/hashicorp/consul/agent/structs" "github.com/hashicorp/consul/agent/token" "github.com/hashicorp/consul/ipaddr" "github.com/hashicorp/consul/lib" libtempl "github.com/hashicorp/consul/lib/template" "github.com/hashicorp/consul/logging" "github.com/hashicorp/consul/tlsutil" "github.com/hashicorp/consul/types" ) // LoadOpts used by Load to construct and validate a RuntimeConfig. type LoadOpts struct { // FlagValues contains the command line arguments that can also be set // in a config file. FlagValues Config // ConfigFiles is a slice of paths to config files and directories that will // be loaded. ConfigFiles []string // ConfigFormat forces all config files to be interpreted as this format // independent of their extension. Value may be `hcl` or `json`. ConfigFormat string // DevMode indicates whether the agent should be started in development // mode. This cannot be configured in a config file. DevMode *bool // HCL is a slice of config data in hcl format. Each one will be loaded as // if it were the source of a config file. Values from HCL will override // values from ConfigFiles and FlagValues. HCL []string // DefaultConfig is an optional source that is applied after other defaults // but before ConfigFiles and all other user specified config. DefaultConfig Source // Overrides are optional config sources that are applied as the very last // config source so they can override any previous values. Overrides []Source // hostname is a shim for testing, allowing tests to specify a replacement // for os.Hostname. hostname func() (string, error) // getPrivateIPv4 and getPublicIPv6 are shims for testing, allowing tests to // specify a replacement for ipaddr.GetPrivateIPv4 and ipaddr.GetPublicIPv6. getPrivateIPv4 func() ([]*net.IPAddr, error) getPublicIPv6 func() ([]*net.IPAddr, error) // sources is a shim for testing. Many test cases used explicit sources instead // paths to config files. This shim allows us to preserve those test cases // while using Load as the entrypoint. sources []Source } // Load will build the configuration including the config source injected // after all other defaults but before any user supplied configuration and the overrides // source injected as the final source in the configuration parsing chain. // // The caller is responsible for handling any warnings in LoadResult.Warnings. func Load(opts LoadOpts) (LoadResult, error) { r := LoadResult{} b, err := newBuilder(opts) if err != nil { return r, err } cfg, err := b.build() if err != nil { return r, err } if err := b.validate(cfg); err != nil { return r, err } return LoadResult{RuntimeConfig: &cfg, Warnings: b.Warnings}, nil } // LoadResult is the result returned from Load. The caller is responsible for // handling any warnings. type LoadResult struct { RuntimeConfig *RuntimeConfig Warnings []string } // builder constructs and validates a runtime configuration from multiple // configuration sources. // // The sources are merged in the following order: // // * default configuration // * config files in alphabetical order // * command line arguments // * overrides // // The config sources are merged sequentially and later values overwrite // previously set values. Slice values are merged by concatenating the two slices. // Map values are merged by over-laying the later maps on top of earlier ones. type builder struct { opts LoadOpts // Head, Sources, and Tail are used to manage the order of the // config sources, as described in the comments above. Head []Source Sources []Source Tail []Source // Warnings contains the warnings encountered when // parsing the configuration. Warnings []string // err contains the first error that occurred during // building the runtime configuration. err error } // newBuilder returns a new configuration Builder from the LoadOpts. func newBuilder(opts LoadOpts) (*builder, error) { configFormat := opts.ConfigFormat if configFormat != "" && configFormat != "json" && configFormat != "hcl" { return nil, fmt.Errorf("config: -config-format must be either 'hcl' or 'json'") } b := &builder{ opts: opts, Head: []Source{DefaultSource(), DefaultEnterpriseSource()}, } if boolVal(opts.DevMode) { b.Head = append(b.Head, DevSource()) } // Since the merge logic is to overwrite all fields with later // values except slices which are merged by appending later values // we need to merge all slice values defined in flags before we // merge the config files since the flag values for slices are // otherwise appended instead of prepended. slices, values := splitSlicesAndValues(opts.FlagValues) b.Head = append(b.Head, LiteralSource{Name: "flags.slices", Config: slices}) if opts.DefaultConfig != nil { b.Head = append(b.Head, opts.DefaultConfig) } b.Sources = opts.sources for _, path := range opts.ConfigFiles { sources, err := b.sourcesFromPath(path, opts.ConfigFormat) if err != nil { return nil, err } b.Sources = append(b.Sources, sources...) } b.Tail = append(b.Tail, LiteralSource{Name: "flags.values", Config: values}) for i, s := range opts.HCL { b.Tail = append(b.Tail, FileSource{ Name: fmt.Sprintf("flags-%d.hcl", i), Format: "hcl", Data: s, }) } b.Tail = append(b.Tail, NonUserSource(), DefaultConsulSource(), OverrideEnterpriseSource(), defaultVersionSource()) if boolVal(opts.DevMode) { b.Tail = append(b.Tail, DevConsulSource()) } if len(opts.Overrides) != 0 { b.Tail = append(b.Tail, opts.Overrides...) } return b, nil } // sourcesFromPath reads a single config file or all files in a directory (but // not its sub-directories) and returns Sources created from the // files. func (b *builder) sourcesFromPath(path string, format string) ([]Source, error) { f, err := os.Open(path) if err != nil { return nil, fmt.Errorf("config: Open failed on %s. %s", path, err) } defer f.Close() fi, err := f.Stat() if err != nil { return nil, fmt.Errorf("config: Stat failed on %s. %s", path, err) } if !fi.IsDir() { if !shouldParseFile(path, format) { b.warn("skipping file %v, extension must be .hcl or .json, or config format must be set", path) return nil, nil } src, err := newSourceFromFile(path, format) if err != nil { return nil, err } return []Source{src}, nil } fis, err := f.Readdir(-1) if err != nil { return nil, fmt.Errorf("config: Readdir failed on %s. %s", path, err) } // sort files by name sort.Sort(byName(fis)) var sources []Source for _, fi := range fis { fp := filepath.Join(path, fi.Name()) // check for a symlink and resolve the path if fi.Mode()&os.ModeSymlink > 0 { var err error fp, err = filepath.EvalSymlinks(fp) if err != nil { return nil, err } fi, err = os.Stat(fp) if err != nil { return nil, err } } // do not recurse into sub dirs if fi.IsDir() { continue } if !shouldParseFile(fp, format) { b.warn("skipping file %v, extension must be .hcl or .json, or config format must be set", fp) continue } src, err := newSourceFromFile(fp, format) if err != nil { return nil, err } sources = append(sources, src) } return sources, nil } // newSourceFromFile creates a Source from the contents of the file at path. func newSourceFromFile(path string, format string) (Source, error) { data, err := ioutil.ReadFile(path) if err != nil { return nil, fmt.Errorf("config: failed to read %s: %s", path, err) } if format == "" { format = formatFromFileExtension(path) } return FileSource{Name: path, Data: string(data), Format: format}, nil } // shouldParse file determines whether the file to be read is of a supported extension func shouldParseFile(path string, configFormat string) bool { srcFormat := formatFromFileExtension(path) return configFormat != "" || srcFormat == "hcl" || srcFormat == "json" } func formatFromFileExtension(name string) string { switch { case strings.HasSuffix(name, ".json"): return "json" case strings.HasSuffix(name, ".hcl"): return "hcl" default: return "" } } type byName []os.FileInfo func (a byName) Len() int { return len(a) } func (a byName) Swap(i, j int) { a[i], a[j] = a[j], a[i] } func (a byName) Less(i, j int) bool { return a[i].Name() < a[j].Name() } // build constructs the runtime configuration from the config sources // and the command line flags. The config sources are processed in the // order they were added with the flags being processed last to give // precedence over the other sources. If the error is nil then // warnings can still contain deprecation or format warnings that should // be presented to the user. func (b *builder) build() (rt RuntimeConfig, err error) { srcs := make([]Source, 0, len(b.Head)+len(b.Sources)+len(b.Tail)) srcs = append(srcs, b.Head...) srcs = append(srcs, b.Sources...) srcs = append(srcs, b.Tail...) // parse the config sources into a configuration var c Config for _, s := range srcs { c2, md, err := s.Parse() switch { case err == ErrNoData: continue case err != nil: return RuntimeConfig{}, fmt.Errorf("failed to parse %v: %w", s.Source(), err) } var unusedErr error for _, k := range md.Unused { switch { case k == "acl_enforce_version_8": b.warn("config key %q is deprecated and should be removed", k) case strings.HasPrefix(k, "audit.sink[") && strings.HasSuffix(k, "].name"): b.warn("config key audit.sink[].name is deprecated and should be removed") default: unusedErr = multierror.Append(unusedErr, fmt.Errorf("invalid config key %s", k)) } } if unusedErr != nil { return RuntimeConfig{}, fmt.Errorf("failed to parse %v: %s", s.Source(), unusedErr) } for _, err := range validateEnterpriseConfigKeys(&c2) { b.warn("%s", err) } b.Warnings = append(b.Warnings, md.Warnings...) // if we have a single 'check' or 'service' we need to add them to the // list of checks and services first since we cannot merge them // generically and later values would clobber earlier ones. // TODO: move to applyDeprecatedConfig if c2.Check != nil { c2.Checks = append(c2.Checks, *c2.Check) c2.Check = nil } if c2.Service != nil { c2.Services = append(c2.Services, *c2.Service) c2.Service = nil } c = Merge(c, c2) } // ---------------------------------------------------------------- // process/merge some complex values // dnsServiceTTL := map[string]time.Duration{} for k, v := range c.DNS.ServiceTTL { dnsServiceTTL[k] = b.durationVal(fmt.Sprintf("dns_config.service_ttl[%q]", k), &v) } soa := RuntimeSOAConfig{Refresh: 3600, Retry: 600, Expire: 86400, Minttl: 0} if c.DNS.SOA != nil { if c.DNS.SOA.Expire != nil { soa.Expire = *c.DNS.SOA.Expire } if c.DNS.SOA.Minttl != nil { soa.Minttl = *c.DNS.SOA.Minttl } if c.DNS.SOA.Refresh != nil { soa.Refresh = *c.DNS.SOA.Refresh } if c.DNS.SOA.Retry != nil { soa.Retry = *c.DNS.SOA.Retry } } leaveOnTerm := !boolVal(c.ServerMode) if c.LeaveOnTerm != nil { leaveOnTerm = boolVal(c.LeaveOnTerm) } skipLeaveOnInt := boolVal(c.ServerMode) if c.SkipLeaveOnInt != nil { skipLeaveOnInt = boolVal(c.SkipLeaveOnInt) } // ---------------------------------------------------------------- // checks and services // var checks []*structs.CheckDefinition if c.Check != nil { checks = append(checks, b.checkVal(c.Check)) } for _, check := range c.Checks { checks = append(checks, b.checkVal(&check)) } var services []*structs.ServiceDefinition for _, service := range c.Services { services = append(services, b.serviceVal(&service)) } if c.Service != nil { services = append(services, b.serviceVal(c.Service)) } // ---------------------------------------------------------------- // addresses // // determine port values and replace values <= 0 and > 65535 with -1 dnsPort := b.portVal("ports.dns", c.Ports.DNS) httpPort := b.portVal("ports.http", c.Ports.HTTP) httpsPort := b.portVal("ports.https", c.Ports.HTTPS) serverPort := b.portVal("ports.server", c.Ports.Server) grpcPort := b.portVal("ports.grpc", c.Ports.GRPC) serfPortLAN := b.portVal("ports.serf_lan", c.Ports.SerfLAN) serfPortWAN := b.portVal("ports.serf_wan", c.Ports.SerfWAN) proxyMinPort := b.portVal("ports.proxy_min_port", c.Ports.ProxyMinPort) proxyMaxPort := b.portVal("ports.proxy_max_port", c.Ports.ProxyMaxPort) sidecarMinPort := b.portVal("ports.sidecar_min_port", c.Ports.SidecarMinPort) sidecarMaxPort := b.portVal("ports.sidecar_max_port", c.Ports.SidecarMaxPort) exposeMinPort := b.portVal("ports.expose_min_port", c.Ports.ExposeMinPort) exposeMaxPort := b.portVal("ports.expose_max_port", c.Ports.ExposeMaxPort) if proxyMaxPort < proxyMinPort { return RuntimeConfig{}, fmt.Errorf( "proxy_min_port must be less than proxy_max_port. To disable, set both to zero.") } if sidecarMaxPort < sidecarMinPort { return RuntimeConfig{}, fmt.Errorf( "sidecar_min_port must be less than sidecar_max_port. To disable, set both to zero.") } if exposeMaxPort < exposeMinPort { return RuntimeConfig{}, fmt.Errorf( "expose_min_port must be less than expose_max_port. To disable, set both to zero.") } // determine the default bind and advertise address // // First check whether the user provided an ANY address or whether // the expanded template results in an ANY address. In that case we // derive an advertise address from the current network // configuration since we can listen on an ANY address for incoming // traffic but cannot advertise it as the address on which the // server can be reached. bindAddrs := b.expandAddrs("bind_addr", c.BindAddr) if len(bindAddrs) == 0 { return RuntimeConfig{}, fmt.Errorf("bind_addr cannot be empty") } if len(bindAddrs) > 1 { return RuntimeConfig{}, fmt.Errorf("bind_addr cannot contain multiple addresses. Use 'addresses.{dns,http,https}' instead.") } if isUnixAddr(bindAddrs[0]) { return RuntimeConfig{}, fmt.Errorf("bind_addr cannot be a unix socket") } if !isIPAddr(bindAddrs[0]) { return RuntimeConfig{}, fmt.Errorf("bind_addr must be an ip address") } if ipaddr.IsAny(stringVal(c.AdvertiseAddrLAN)) { return RuntimeConfig{}, fmt.Errorf("Advertise address cannot be 0.0.0.0, :: or [::]") } if ipaddr.IsAny(stringVal(c.AdvertiseAddrWAN)) { return RuntimeConfig{}, fmt.Errorf("Advertise WAN address cannot be 0.0.0.0, :: or [::]") } bindAddr := bindAddrs[0].(*net.IPAddr) advertiseAddr := makeIPAddr(b.expandFirstIP("advertise_addr", c.AdvertiseAddrLAN), bindAddr) if ipaddr.IsAny(advertiseAddr) { addrtyp, detect := advertiseAddrFunc(b.opts, advertiseAddr) advertiseAddrs, err := detect() if err != nil { return RuntimeConfig{}, fmt.Errorf("Error detecting %s address: %s", addrtyp, err) } if len(advertiseAddrs) == 0 { return RuntimeConfig{}, fmt.Errorf("No %s address found", addrtyp) } if len(advertiseAddrs) > 1 { return RuntimeConfig{}, fmt.Errorf("Multiple %s addresses found. Please configure one with 'bind' and/or 'advertise'.", addrtyp) } advertiseAddr = advertiseAddrs[0] } // derive other bind addresses from the bindAddr rpcBindAddr := b.makeTCPAddr(bindAddr, nil, serverPort) serfBindAddrLAN := b.makeTCPAddr(b.expandFirstIP("serf_lan", c.SerfBindAddrLAN), bindAddr, serfPortLAN) // Only initialize serf WAN bind address when its enabled var serfBindAddrWAN *net.TCPAddr if serfPortWAN >= 0 { serfBindAddrWAN = b.makeTCPAddr(b.expandFirstIP("serf_wan", c.SerfBindAddrWAN), bindAddr, serfPortWAN) } // derive other advertise addresses from the advertise address advertiseAddrLAN := makeIPAddr(b.expandFirstIP("advertise_addr", c.AdvertiseAddrLAN), advertiseAddr) advertiseAddrIsV6 := advertiseAddr.IP.To4() == nil var advertiseAddrV4, advertiseAddrV6 *net.IPAddr if !advertiseAddrIsV6 { advertiseAddrV4 = advertiseAddr } else { advertiseAddrV6 = advertiseAddr } advertiseAddrLANIPv4 := makeIPAddr(b.expandFirstIP("advertise_addr_ipv4", c.AdvertiseAddrLANIPv4), advertiseAddrV4) if advertiseAddrLANIPv4 != nil && advertiseAddrLANIPv4.IP.To4() == nil { return RuntimeConfig{}, fmt.Errorf("advertise_addr_ipv4 must be an ipv4 address") } advertiseAddrLANIPv6 := makeIPAddr(b.expandFirstIP("advertise_addr_ipv6", c.AdvertiseAddrLANIPv6), advertiseAddrV6) if advertiseAddrLANIPv6 != nil && advertiseAddrLANIPv6.IP.To4() != nil { return RuntimeConfig{}, fmt.Errorf("advertise_addr_ipv6 must be an ipv6 address") } advertiseAddrWAN := makeIPAddr(b.expandFirstIP("advertise_addr_wan", c.AdvertiseAddrWAN), advertiseAddrLAN) advertiseAddrWANIsV6 := advertiseAddrWAN.IP.To4() == nil var advertiseAddrWANv4, advertiseAddrWANv6 *net.IPAddr if !advertiseAddrWANIsV6 { advertiseAddrWANv4 = advertiseAddrWAN } else { advertiseAddrWANv6 = advertiseAddrWAN } advertiseAddrWANIPv4 := makeIPAddr(b.expandFirstIP("advertise_addr_wan_ipv4", c.AdvertiseAddrWANIPv4), advertiseAddrWANv4) if advertiseAddrWANIPv4 != nil && advertiseAddrWANIPv4.IP.To4() == nil { return RuntimeConfig{}, fmt.Errorf("advertise_addr_wan_ipv4 must be an ipv4 address") } advertiseAddrWANIPv6 := makeIPAddr(b.expandFirstIP("advertise_addr_wan_ipv6", c.AdvertiseAddrWANIPv6), advertiseAddrWANv6) if advertiseAddrWANIPv6 != nil && advertiseAddrWANIPv6.IP.To4() != nil { return RuntimeConfig{}, fmt.Errorf("advertise_addr_wan_ipv6 must be an ipv6 address") } rpcAdvertiseAddr := &net.TCPAddr{IP: advertiseAddrLAN.IP, Port: serverPort} serfAdvertiseAddrLAN := &net.TCPAddr{IP: advertiseAddrLAN.IP, Port: serfPortLAN} // Only initialize serf WAN advertise address when its enabled var serfAdvertiseAddrWAN *net.TCPAddr if serfPortWAN >= 0 { serfAdvertiseAddrWAN = &net.TCPAddr{IP: advertiseAddrWAN.IP, Port: serfPortWAN} } // determine client addresses clientAddrs := b.expandIPs("client_addr", c.ClientAddr) dnsAddrs := b.makeAddrs(b.expandAddrs("addresses.dns", c.Addresses.DNS), clientAddrs, dnsPort) httpAddrs := b.makeAddrs(b.expandAddrs("addresses.http", c.Addresses.HTTP), clientAddrs, httpPort) httpsAddrs := b.makeAddrs(b.expandAddrs("addresses.https", c.Addresses.HTTPS), clientAddrs, httpsPort) grpcAddrs := b.makeAddrs(b.expandAddrs("addresses.grpc", c.Addresses.GRPC), clientAddrs, grpcPort) for _, a := range dnsAddrs { if x, ok := a.(*net.TCPAddr); ok { dnsAddrs = append(dnsAddrs, &net.UDPAddr{IP: x.IP, Port: x.Port}) } } // expand dns recursors uniq := map[string]bool{} dnsRecursors := []string{} for _, r := range c.DNSRecursors { x, err := template.Parse(r) if err != nil { return RuntimeConfig{}, fmt.Errorf("Invalid DNS recursor template %q: %s", r, err) } for _, addr := range strings.Fields(x) { if strings.HasPrefix(addr, "unix://") { return RuntimeConfig{}, fmt.Errorf("DNS Recursors cannot be unix sockets: %s", addr) } if uniq[addr] { continue } uniq[addr] = true dnsRecursors = append(dnsRecursors, addr) } } datacenter := strings.ToLower(stringVal(c.Datacenter)) altDomain := stringVal(c.DNSAltDomain) // Create the default set of tagged addresses. if c.TaggedAddresses == nil { c.TaggedAddresses = make(map[string]string) } c.TaggedAddresses[structs.TaggedAddressLAN] = advertiseAddrLAN.IP.String() if advertiseAddrLANIPv4 != nil { c.TaggedAddresses[structs.TaggedAddressLANIPv4] = advertiseAddrLANIPv4.IP.String() } if advertiseAddrLANIPv6 != nil { c.TaggedAddresses[structs.TaggedAddressLANIPv6] = advertiseAddrLANIPv6.IP.String() } c.TaggedAddresses[structs.TaggedAddressWAN] = advertiseAddrWAN.IP.String() if advertiseAddrWANIPv4 != nil { c.TaggedAddresses[structs.TaggedAddressWANIPv4] = advertiseAddrWANIPv4.IP.String() } if advertiseAddrWANIPv6 != nil { c.TaggedAddresses[structs.TaggedAddressWANIPv6] = advertiseAddrWANIPv6.IP.String() } // segments var segments []structs.NetworkSegment for _, s := range c.Segments { name := stringVal(s.Name) port := b.portVal(fmt.Sprintf("segments[%s].port", name), s.Port) if port <= 0 { return RuntimeConfig{}, fmt.Errorf("Port for segment %q cannot be <= 0", name) } bind := b.makeTCPAddr( b.expandFirstIP(fmt.Sprintf("segments[%s].bind", name), s.Bind), bindAddr, port, ) advertise := b.makeTCPAddr( b.expandFirstIP(fmt.Sprintf("segments[%s].advertise", name), s.Advertise), advertiseAddrLAN, port, ) segments = append(segments, structs.NetworkSegment{ Name: name, Bind: bind, Advertise: advertise, RPCListener: boolVal(s.RPCListener), }) } // Parse the metric filters var telemetryAllowedPrefixes, telemetryBlockedPrefixes []string for _, rule := range c.Telemetry.PrefixFilter { if rule == "" { b.warn("Cannot have empty filter rule in prefix_filter") continue } switch rule[0] { case '+': telemetryAllowedPrefixes = append(telemetryAllowedPrefixes, rule[1:]) case '-': telemetryBlockedPrefixes = append(telemetryBlockedPrefixes, rule[1:]) default: b.warn("Filter rule must begin with either '+' or '-': %q", rule) } } // raft performance scaling performanceRaftMultiplier := intVal(c.Performance.RaftMultiplier) if performanceRaftMultiplier < 1 || uint(performanceRaftMultiplier) > consul.MaxRaftMultiplier { return RuntimeConfig{}, fmt.Errorf("performance.raft_multiplier cannot be %d. Must be between 1 and %d", performanceRaftMultiplier, consul.MaxRaftMultiplier) } consulRaftElectionTimeout := b.durationVal("consul.raft.election_timeout", c.Consul.Raft.ElectionTimeout) * time.Duration(performanceRaftMultiplier) consulRaftHeartbeatTimeout := b.durationVal("consul.raft.heartbeat_timeout", c.Consul.Raft.HeartbeatTimeout) * time.Duration(performanceRaftMultiplier) consulRaftLeaderLeaseTimeout := b.durationVal("consul.raft.leader_lease_timeout", c.Consul.Raft.LeaderLeaseTimeout) * time.Duration(performanceRaftMultiplier) // Connect connectEnabled := boolVal(c.Connect.Enabled) connectCAProvider := stringVal(c.Connect.CAProvider) connectCAConfig := c.Connect.CAConfig // autoEncrypt and autoConfig implicitly turns on connect which is why // they need to be above other settings that rely on connect. autoEncryptDNSSAN := []string{} for _, d := range c.AutoEncrypt.DNSSAN { autoEncryptDNSSAN = append(autoEncryptDNSSAN, d) } autoEncryptIPSAN := []net.IP{} for _, i := range c.AutoEncrypt.IPSAN { ip := net.ParseIP(i) if ip == nil { b.warn(fmt.Sprintf("Cannot parse ip %q from AutoEncrypt.IPSAN", i)) continue } autoEncryptIPSAN = append(autoEncryptIPSAN, ip) } autoEncryptAllowTLS := boolVal(c.AutoEncrypt.AllowTLS) autoConfig := b.autoConfigVal(c.AutoConfig, stringVal(c.Partition)) if autoEncryptAllowTLS || autoConfig.Enabled { connectEnabled = true } // Connect proxy defaults connectMeshGatewayWANFederationEnabled := boolVal(c.Connect.MeshGatewayWANFederationEnabled) if connectMeshGatewayWANFederationEnabled && !connectEnabled { return RuntimeConfig{}, fmt.Errorf("'connect.enable_mesh_gateway_wan_federation=true' requires 'connect.enabled=true'") } if connectCAConfig != nil { // nolint: staticcheck // CA config should be changed to use HookTranslateKeys lib.TranslateKeys(connectCAConfig, map[string]string{ // Consul CA config "private_key": "PrivateKey", "root_cert": "RootCert", "intermediate_cert_ttl": "IntermediateCertTTL", // Vault CA config "address": "Address", "token": "Token", "root_pki_path": "RootPKIPath", "intermediate_pki_path": "IntermediatePKIPath", "ca_file": "CAFile", "ca_path": "CAPath", "cert_file": "CertFile", "key_file": "KeyFile", "tls_server_name": "TLSServerName", "tls_skip_verify": "TLSSkipVerify", // AWS CA config "existing_arn": "ExistingARN", "delete_on_exit": "DeleteOnExit", // Common CA config "leaf_cert_ttl": "LeafCertTTL", "csr_max_per_second": "CSRMaxPerSecond", "csr_max_concurrent": "CSRMaxConcurrent", "private_key_type": "PrivateKeyType", "private_key_bits": "PrivateKeyBits", }) } aclsEnabled := false primaryDatacenter := strings.ToLower(stringVal(c.PrimaryDatacenter)) if c.ACL.Enabled != nil { aclsEnabled = boolVal(c.ACL.Enabled) } // Set the primary DC if it wasn't set. if primaryDatacenter == "" { primaryDatacenter = datacenter } enableRemoteScriptChecks := boolVal(c.EnableScriptChecks) enableLocalScriptChecks := boolValWithDefault(c.EnableLocalScriptChecks, enableRemoteScriptChecks) // VerifyServerHostname implies VerifyOutgoing verifyServerName := boolVal(c.VerifyServerHostname) verifyOutgoing := boolVal(c.VerifyOutgoing) if verifyServerName { // Setting only verify_server_hostname is documented to imply // verify_outgoing. If it doesn't then we risk sending communication over TCP // when we documented it as forcing TLS for RPCs. Enforce this here rather // than in several different places through the code that need to reason // about it. (See CVE-2018-19653) verifyOutgoing = true } var configEntries []structs.ConfigEntry if len(c.ConfigEntries.Bootstrap) > 0 { for i, rawEntry := range c.ConfigEntries.Bootstrap { entry, err := structs.DecodeConfigEntry(rawEntry) if err != nil { return RuntimeConfig{}, fmt.Errorf("config_entries.bootstrap[%d]: %s", i, err) } if err := entry.Normalize(); err != nil { return RuntimeConfig{}, fmt.Errorf("config_entries.bootstrap[%d]: %s", i, err) } if err := entry.Validate(); err != nil { return RuntimeConfig{}, fmt.Errorf("config_entries.bootstrap[%d]: %w", i, err) } configEntries = append(configEntries, entry) } } serfAllowedCIDRSLAN, err := memberlist.ParseCIDRs(c.SerfAllowedCIDRsLAN) if err != nil { return RuntimeConfig{}, fmt.Errorf("serf_lan_allowed_cidrs: %s", err) } serfAllowedCIDRSWAN, err := memberlist.ParseCIDRs(c.SerfAllowedCIDRsWAN) if err != nil { return RuntimeConfig{}, fmt.Errorf("serf_wan_allowed_cidrs: %s", err) } // Handle Deprecated UI config fields if c.UI != nil { b.warn("The 'ui' field is deprecated. Use the 'ui_config.enabled' field instead.") if c.UIConfig.Enabled == nil { c.UIConfig.Enabled = c.UI } } if c.UIDir != nil { b.warn("The 'ui_dir' field is deprecated. Use the 'ui_config.dir' field instead.") if c.UIConfig.Dir == nil { c.UIConfig.Dir = c.UIDir } } if c.UIContentPath != nil { b.warn("The 'ui_content_path' field is deprecated. Use the 'ui_config.content_path' field instead.") if c.UIConfig.ContentPath == nil { c.UIConfig.ContentPath = c.UIContentPath } } serverMode := boolVal(c.ServerMode) // ---------------------------------------------------------------- // build runtime config // dataDir := stringVal(c.DataDir) rt = RuntimeConfig{ // non-user configurable values AEInterval: b.durationVal("ae_interval", c.AEInterval), CheckDeregisterIntervalMin: b.durationVal("check_deregister_interval_min", c.CheckDeregisterIntervalMin), CheckReapInterval: b.durationVal("check_reap_interval", c.CheckReapInterval), Revision: stringVal(c.Revision), SegmentLimit: intVal(c.SegmentLimit), SegmentNameLimit: intVal(c.SegmentNameLimit), SyncCoordinateIntervalMin: b.durationVal("sync_coordinate_interval_min", c.SyncCoordinateIntervalMin), SyncCoordinateRateTarget: float64Val(c.SyncCoordinateRateTarget), Version: stringVal(c.Version), VersionPrerelease: stringVal(c.VersionPrerelease), // consul configuration ConsulCoordinateUpdateBatchSize: intVal(c.Consul.Coordinate.UpdateBatchSize), ConsulCoordinateUpdateMaxBatches: intVal(c.Consul.Coordinate.UpdateMaxBatches), ConsulCoordinateUpdatePeriod: b.durationVal("consul.coordinate.update_period", c.Consul.Coordinate.UpdatePeriod), ConsulRaftElectionTimeout: consulRaftElectionTimeout, ConsulRaftHeartbeatTimeout: consulRaftHeartbeatTimeout, ConsulRaftLeaderLeaseTimeout: consulRaftLeaderLeaseTimeout, ConsulServerHealthInterval: b.durationVal("consul.server.health_interval", c.Consul.Server.HealthInterval), // gossip configuration GossipLANGossipInterval: b.durationVal("gossip_lan..gossip_interval", c.GossipLAN.GossipInterval), GossipLANGossipNodes: intVal(c.GossipLAN.GossipNodes), GossipLANProbeInterval: b.durationVal("gossip_lan..probe_interval", c.GossipLAN.ProbeInterval), GossipLANProbeTimeout: b.durationVal("gossip_lan..probe_timeout", c.GossipLAN.ProbeTimeout), GossipLANSuspicionMult: intVal(c.GossipLAN.SuspicionMult), GossipLANRetransmitMult: intVal(c.GossipLAN.RetransmitMult), GossipWANGossipInterval: b.durationVal("gossip_wan..gossip_interval", c.GossipWAN.GossipInterval), GossipWANGossipNodes: intVal(c.GossipWAN.GossipNodes), GossipWANProbeInterval: b.durationVal("gossip_wan..probe_interval", c.GossipWAN.ProbeInterval), GossipWANProbeTimeout: b.durationVal("gossip_wan..probe_timeout", c.GossipWAN.ProbeTimeout), GossipWANSuspicionMult: intVal(c.GossipWAN.SuspicionMult), GossipWANRetransmitMult: intVal(c.GossipWAN.RetransmitMult), // ACL ACLsEnabled: aclsEnabled, ACLResolverSettings: consul.ACLResolverSettings{ ACLsEnabled: aclsEnabled, Datacenter: datacenter, NodeName: b.nodeName(c.NodeName), ACLPolicyTTL: b.durationVal("acl.policy_ttl", c.ACL.PolicyTTL), ACLTokenTTL: b.durationVal("acl.token_ttl", c.ACL.TokenTTL), ACLRoleTTL: b.durationVal("acl.role_ttl", c.ACL.RoleTTL), ACLDownPolicy: stringVal(c.ACL.DownPolicy), ACLDefaultPolicy: stringVal(c.ACL.DefaultPolicy), }, ACLEnableKeyListPolicy: boolVal(c.ACL.EnableKeyListPolicy), ACLMasterToken: stringVal(c.ACL.Tokens.Master), ACLTokenReplication: boolVal(c.ACL.TokenReplication), ACLTokens: token.Config{ DataDir: dataDir, EnablePersistence: boolValWithDefault(c.ACL.EnableTokenPersistence, false), ACLDefaultToken: stringVal(c.ACL.Tokens.Default), ACLAgentToken: stringVal(c.ACL.Tokens.Agent), ACLAgentMasterToken: stringVal(c.ACL.Tokens.AgentMaster), ACLReplicationToken: stringVal(c.ACL.Tokens.Replication), }, // Autopilot AutopilotCleanupDeadServers: boolVal(c.Autopilot.CleanupDeadServers), AutopilotDisableUpgradeMigration: boolVal(c.Autopilot.DisableUpgradeMigration), AutopilotLastContactThreshold: b.durationVal("autopilot.last_contact_threshold", c.Autopilot.LastContactThreshold), AutopilotMaxTrailingLogs: intVal(c.Autopilot.MaxTrailingLogs), AutopilotMinQuorum: uintVal(c.Autopilot.MinQuorum), AutopilotRedundancyZoneTag: stringVal(c.Autopilot.RedundancyZoneTag), AutopilotServerStabilizationTime: b.durationVal("autopilot.server_stabilization_time", c.Autopilot.ServerStabilizationTime), AutopilotUpgradeVersionTag: stringVal(c.Autopilot.UpgradeVersionTag), // DNS DNSAddrs: dnsAddrs, DNSAllowStale: boolVal(c.DNS.AllowStale), DNSARecordLimit: intVal(c.DNS.ARecordLimit), DNSDisableCompression: boolVal(c.DNS.DisableCompression), DNSDomain: stringVal(c.DNSDomain), DNSAltDomain: altDomain, DNSEnableTruncate: boolVal(c.DNS.EnableTruncate), DNSMaxStale: b.durationVal("dns_config.max_stale", c.DNS.MaxStale), DNSNodeTTL: b.durationVal("dns_config.node_ttl", c.DNS.NodeTTL), DNSOnlyPassing: boolVal(c.DNS.OnlyPassing), DNSPort: dnsPort, DNSRecursorStrategy: b.dnsRecursorStrategyVal(stringVal(c.DNS.RecursorStrategy)), DNSRecursorTimeout: b.durationVal("recursor_timeout", c.DNS.RecursorTimeout), DNSRecursors: dnsRecursors, DNSServiceTTL: dnsServiceTTL, DNSSOA: soa, DNSUDPAnswerLimit: intVal(c.DNS.UDPAnswerLimit), DNSNodeMetaTXT: boolValWithDefault(c.DNS.NodeMetaTXT, true), DNSUseCache: boolVal(c.DNS.UseCache), DNSCacheMaxAge: b.durationVal("dns_config.cache_max_age", c.DNS.CacheMaxAge), // HTTP HTTPPort: httpPort, HTTPSPort: httpsPort, HTTPAddrs: httpAddrs, HTTPSAddrs: httpsAddrs, HTTPBlockEndpoints: c.HTTPConfig.BlockEndpoints, HTTPMaxHeaderBytes: intVal(c.HTTPConfig.MaxHeaderBytes), HTTPResponseHeaders: c.HTTPConfig.ResponseHeaders, AllowWriteHTTPFrom: b.cidrsVal("allow_write_http_from", c.HTTPConfig.AllowWriteHTTPFrom), HTTPUseCache: boolValWithDefault(c.HTTPConfig.UseCache, true), // Telemetry Telemetry: lib.TelemetryConfig{ CirconusAPIApp: stringVal(c.Telemetry.CirconusAPIApp), CirconusAPIToken: stringVal(c.Telemetry.CirconusAPIToken), CirconusAPIURL: stringVal(c.Telemetry.CirconusAPIURL), CirconusBrokerID: stringVal(c.Telemetry.CirconusBrokerID), CirconusBrokerSelectTag: stringVal(c.Telemetry.CirconusBrokerSelectTag), CirconusCheckDisplayName: stringVal(c.Telemetry.CirconusCheckDisplayName), CirconusCheckForceMetricActivation: stringVal(c.Telemetry.CirconusCheckForceMetricActivation), CirconusCheckID: stringVal(c.Telemetry.CirconusCheckID), CirconusCheckInstanceID: stringVal(c.Telemetry.CirconusCheckInstanceID), CirconusCheckSearchTag: stringVal(c.Telemetry.CirconusCheckSearchTag), CirconusCheckTags: stringVal(c.Telemetry.CirconusCheckTags), CirconusSubmissionInterval: stringVal(c.Telemetry.CirconusSubmissionInterval), CirconusSubmissionURL: stringVal(c.Telemetry.CirconusSubmissionURL), DisableCompatOneNine: boolVal(c.Telemetry.DisableCompatOneNine), DisableHostname: boolVal(c.Telemetry.DisableHostname), DogstatsdAddr: stringVal(c.Telemetry.DogstatsdAddr), DogstatsdTags: c.Telemetry.DogstatsdTags, FilterDefault: boolVal(c.Telemetry.FilterDefault), AllowedPrefixes: telemetryAllowedPrefixes, BlockedPrefixes: telemetryBlockedPrefixes, MetricsPrefix: stringVal(c.Telemetry.MetricsPrefix), StatsdAddr: stringVal(c.Telemetry.StatsdAddr), StatsiteAddr: stringVal(c.Telemetry.StatsiteAddr), PrometheusOpts: prometheus.PrometheusOpts{ Expiration: b.durationVal("prometheus_retention_time", c.Telemetry.PrometheusRetentionTime), }, }, // Agent AdvertiseAddrLAN: advertiseAddrLAN, AdvertiseAddrWAN: advertiseAddrWAN, AdvertiseReconnectTimeout: b.durationVal("advertise_reconnect_timeout", c.AdvertiseReconnectTimeout), BindAddr: bindAddr, Bootstrap: boolVal(c.Bootstrap), BootstrapExpect: intVal(c.BootstrapExpect), Cache: cache.Options{ EntryFetchRate: rate.Limit( float64ValWithDefault(c.Cache.EntryFetchRate, float64(cache.DefaultEntryFetchRate)), ), EntryFetchMaxBurst: intValWithDefault( c.Cache.EntryFetchMaxBurst, cache.DefaultEntryFetchMaxBurst, ), }, CAFile: stringVal(c.CAFile), CAPath: stringVal(c.CAPath), CertFile: stringVal(c.CertFile), CheckUpdateInterval: b.durationVal("check_update_interval", c.CheckUpdateInterval), CheckOutputMaxSize: intValWithDefault(c.CheckOutputMaxSize, 4096), Checks: checks, ClientAddrs: clientAddrs, ConfigEntryBootstrap: configEntries, AutoEncryptTLS: boolVal(c.AutoEncrypt.TLS), AutoEncryptDNSSAN: autoEncryptDNSSAN, AutoEncryptIPSAN: autoEncryptIPSAN, AutoEncryptAllowTLS: autoEncryptAllowTLS, AutoConfig: autoConfig, ConnectEnabled: connectEnabled, ConnectCAProvider: connectCAProvider, ConnectCAConfig: connectCAConfig, ConnectMeshGatewayWANFederationEnabled: connectMeshGatewayWANFederationEnabled, ConnectSidecarMinPort: sidecarMinPort, ConnectSidecarMaxPort: sidecarMaxPort, ConnectTestCALeafRootChangeSpread: b.durationVal("connect.test_ca_leaf_root_change_spread", c.Connect.TestCALeafRootChangeSpread), ExposeMinPort: exposeMinPort, ExposeMaxPort: exposeMaxPort, DataDir: dataDir, Datacenter: datacenter, DefaultQueryTime: b.durationVal("default_query_time", c.DefaultQueryTime), DevMode: boolVal(b.opts.DevMode), DisableAnonymousSignature: boolVal(c.DisableAnonymousSignature), DisableCoordinates: boolVal(c.DisableCoordinates), DisableHostNodeID: boolVal(c.DisableHostNodeID), DisableHTTPUnprintableCharFilter: boolVal(c.DisableHTTPUnprintableCharFilter), DisableKeyringFile: boolVal(c.DisableKeyringFile), DisableRemoteExec: boolVal(c.DisableRemoteExec), DisableUpdateCheck: boolVal(c.DisableUpdateCheck), DiscardCheckOutput: boolVal(c.DiscardCheckOutput), DiscoveryMaxStale: b.durationVal("discovery_max_stale", c.DiscoveryMaxStale), EnableAgentTLSForChecks: boolVal(c.EnableAgentTLSForChecks), EnableCentralServiceConfig: boolVal(c.EnableCentralServiceConfig), EnableDebug: boolVal(c.EnableDebug), EnableRemoteScriptChecks: enableRemoteScriptChecks, EnableLocalScriptChecks: enableLocalScriptChecks, EncryptKey: stringVal(c.EncryptKey), EncryptVerifyIncoming: boolVal(c.EncryptVerifyIncoming), EncryptVerifyOutgoing: boolVal(c.EncryptVerifyOutgoing), GRPCPort: grpcPort, GRPCAddrs: grpcAddrs, HTTPMaxConnsPerClient: intVal(c.Limits.HTTPMaxConnsPerClient), HTTPSHandshakeTimeout: b.durationVal("limits.https_handshake_timeout", c.Limits.HTTPSHandshakeTimeout), KeyFile: stringVal(c.KeyFile), KVMaxValueSize: uint64Val(c.Limits.KVMaxValueSize), LeaveDrainTime: b.durationVal("performance.leave_drain_time", c.Performance.LeaveDrainTime), LeaveOnTerm: leaveOnTerm, Logging: logging.Config{ LogLevel: stringVal(c.LogLevel), LogJSON: boolVal(c.LogJSON), LogFilePath: stringVal(c.LogFile), EnableSyslog: boolVal(c.EnableSyslog), SyslogFacility: stringVal(c.SyslogFacility), LogRotateDuration: b.durationVal("log_rotate_duration", c.LogRotateDuration), LogRotateBytes: intVal(c.LogRotateBytes), LogRotateMaxFiles: intVal(c.LogRotateMaxFiles), }, MaxQueryTime: b.durationVal("max_query_time", c.MaxQueryTime), NodeID: types.NodeID(stringVal(c.NodeID)), NodeMeta: c.NodeMeta, NodeName: b.nodeName(c.NodeName), ReadReplica: boolVal(c.ReadReplica), PidFile: stringVal(c.PidFile), PrimaryDatacenter: primaryDatacenter, PrimaryGateways: b.expandAllOptionalAddrs("primary_gateways", c.PrimaryGateways), PrimaryGatewaysInterval: b.durationVal("primary_gateways_interval", c.PrimaryGatewaysInterval), RPCAdvertiseAddr: rpcAdvertiseAddr, RPCBindAddr: rpcBindAddr, RPCHandshakeTimeout: b.durationVal("limits.rpc_handshake_timeout", c.Limits.RPCHandshakeTimeout), RPCHoldTimeout: b.durationVal("performance.rpc_hold_timeout", c.Performance.RPCHoldTimeout), RPCMaxBurst: intVal(c.Limits.RPCMaxBurst), RPCMaxConnsPerClient: intVal(c.Limits.RPCMaxConnsPerClient), RPCProtocol: intVal(c.RPCProtocol), RPCRateLimit: rate.Limit(float64Val(c.Limits.RPCRate)), RPCConfig: consul.RPCConfig{EnableStreaming: boolValWithDefault(c.RPC.EnableStreaming, serverMode)}, RaftProtocol: intVal(c.RaftProtocol), RaftSnapshotThreshold: intVal(c.RaftSnapshotThreshold), RaftSnapshotInterval: b.durationVal("raft_snapshot_interval", c.RaftSnapshotInterval), RaftTrailingLogs: intVal(c.RaftTrailingLogs), ReconnectTimeoutLAN: b.durationVal("reconnect_timeout", c.ReconnectTimeoutLAN), ReconnectTimeoutWAN: b.durationVal("reconnect_timeout_wan", c.ReconnectTimeoutWAN), RejoinAfterLeave: boolVal(c.RejoinAfterLeave), RetryJoinIntervalLAN: b.durationVal("retry_interval", c.RetryJoinIntervalLAN), RetryJoinIntervalWAN: b.durationVal("retry_interval_wan", c.RetryJoinIntervalWAN), RetryJoinLAN: b.expandAllOptionalAddrs("retry_join", c.RetryJoinLAN), RetryJoinMaxAttemptsLAN: intVal(c.RetryJoinMaxAttemptsLAN), RetryJoinMaxAttemptsWAN: intVal(c.RetryJoinMaxAttemptsWAN), RetryJoinWAN: b.expandAllOptionalAddrs("retry_join_wan", c.RetryJoinWAN), SegmentName: stringVal(c.SegmentName), Segments: segments, SerfAdvertiseAddrLAN: serfAdvertiseAddrLAN, SerfAdvertiseAddrWAN: serfAdvertiseAddrWAN, SerfAllowedCIDRsLAN: serfAllowedCIDRSLAN, SerfAllowedCIDRsWAN: serfAllowedCIDRSWAN, SerfBindAddrLAN: serfBindAddrLAN, SerfBindAddrWAN: serfBindAddrWAN, SerfPortLAN: serfPortLAN, SerfPortWAN: serfPortWAN, ServerMode: serverMode, ServerName: stringVal(c.ServerName), ServerPort: serverPort, Services: services, SessionTTLMin: b.durationVal("session_ttl_min", c.SessionTTLMin), SkipLeaveOnInt: skipLeaveOnInt, StartJoinAddrsLAN: b.expandAllOptionalAddrs("start_join", c.StartJoinAddrsLAN), StartJoinAddrsWAN: b.expandAllOptionalAddrs("start_join_wan", c.StartJoinAddrsWAN), TLSCipherSuites: b.tlsCipherSuites("tls_cipher_suites", c.TLSCipherSuites), TLSMinVersion: stringVal(c.TLSMinVersion), TLSPreferServerCipherSuites: boolVal(c.TLSPreferServerCipherSuites), TaggedAddresses: c.TaggedAddresses, TranslateWANAddrs: boolVal(c.TranslateWANAddrs), TxnMaxReqLen: uint64Val(c.Limits.TxnMaxReqLen), UIConfig: b.uiConfigVal(c.UIConfig), UnixSocketGroup: stringVal(c.UnixSocket.Group), UnixSocketMode: stringVal(c.UnixSocket.Mode), UnixSocketUser: stringVal(c.UnixSocket.User), VerifyIncoming: boolVal(c.VerifyIncoming), VerifyIncomingHTTPS: boolVal(c.VerifyIncomingHTTPS), VerifyIncomingRPC: boolVal(c.VerifyIncomingRPC), VerifyOutgoing: verifyOutgoing, VerifyServerHostname: verifyServerName, Watches: c.Watches, } rt.UseStreamingBackend = boolValWithDefault(c.UseStreamingBackend, true) if rt.Cache.EntryFetchMaxBurst <= 0 { return RuntimeConfig{}, fmt.Errorf("cache.entry_fetch_max_burst must be strictly positive, was: %v", rt.Cache.EntryFetchMaxBurst) } if rt.Cache.EntryFetchRate <= 0 { return RuntimeConfig{}, fmt.Errorf("cache.entry_fetch_rate must be strictly positive, was: %v", rt.Cache.EntryFetchRate) } if rt.UIConfig.MetricsProvider == "prometheus" { // Handle defaulting for the built-in version of prometheus. if len(rt.UIConfig.MetricsProxy.PathAllowlist) == 0 { rt.UIConfig.MetricsProxy.PathAllowlist = []string{ "/api/v1/query", "/api/v1/query_range", } } } if err := b.BuildEnterpriseRuntimeConfig(&rt, &c); err != nil { return rt, err } if rt.BootstrapExpect == 1 { rt.Bootstrap = true rt.BootstrapExpect = 0 b.warn(`BootstrapExpect is set to 1; this is the same as Bootstrap mode.`) } return rt, nil } func advertiseAddrFunc(opts LoadOpts, advertiseAddr *net.IPAddr) (string, func() ([]*net.IPAddr, error)) { switch { case ipaddr.IsAnyV4(advertiseAddr): fn := opts.getPrivateIPv4 if fn == nil { fn = ipaddr.GetPrivateIPv4 } return "private IPv4", fn case ipaddr.IsAnyV6(advertiseAddr): fn := opts.getPublicIPv6 if fn == nil { fn = ipaddr.GetPublicIPv6 } return "public IPv6", fn default: panic("unsupported net.IPAddr Type") } } // reBasicName validates that a field contains only lower case alphanumerics, // underscore and dash and is non-empty. var reBasicName = regexp.MustCompile("^[a-z0-9_-]+$") func validateBasicName(field, value string, allowEmpty bool) error { if value == "" { if allowEmpty { return nil } return fmt.Errorf("%s cannot be empty", field) } if !reBasicName.MatchString(value) { return fmt.Errorf("%s can only contain lowercase alphanumeric, - or _ characters."+ " received: %q", field, value) } return nil } // validate performs semantic validation of the runtime configuration. func (b *builder) validate(rt RuntimeConfig) error { // validContentPath defines a regexp for a valid content path name. validContentPath := regexp.MustCompile(`^[A-Za-z0-9/_-]+$`) hasVersion := regexp.MustCompile(`^/v\d+/$`) // ---------------------------------------------------------------- // check required params we cannot recover from first // if rt.RaftProtocol != 3 { return fmt.Errorf("raft_protocol version %d is not supported by this version of Consul", rt.RaftProtocol) } if err := validateBasicName("datacenter", rt.Datacenter, false); err != nil { return err } if rt.DataDir == "" && !rt.DevMode { return fmt.Errorf("data_dir cannot be empty") } if !validContentPath.MatchString(rt.UIConfig.ContentPath) { return fmt.Errorf("ui-content-path can only contain alphanumeric, -, _, or /. received: %q", rt.UIConfig.ContentPath) } if hasVersion.MatchString(rt.UIConfig.ContentPath) { return fmt.Errorf("ui-content-path cannot have 'v[0-9]'. received: %q", rt.UIConfig.ContentPath) } if err := validateBasicName("ui_config.metrics_provider", rt.UIConfig.MetricsProvider, true); err != nil { return err } if rt.UIConfig.MetricsProviderOptionsJSON != "" { // Attempt to parse the JSON to ensure it's valid, parsing into a map // ensures we get an object. var dummyMap map[string]interface{} err := json.Unmarshal([]byte(rt.UIConfig.MetricsProviderOptionsJSON), &dummyMap) if err != nil { return fmt.Errorf("ui_config.metrics_provider_options_json must be empty "+ "or a string containing a valid JSON object. received: %q", rt.UIConfig.MetricsProviderOptionsJSON) } } if rt.UIConfig.MetricsProxy.BaseURL != "" { u, err := url.Parse(rt.UIConfig.MetricsProxy.BaseURL) if err != nil || !(u.Scheme == "http" || u.Scheme == "https") { return fmt.Errorf("ui_config.metrics_proxy.base_url must be a valid http"+ " or https URL. received: %q", rt.UIConfig.MetricsProxy.BaseURL) } } for _, allowedPath := range rt.UIConfig.MetricsProxy.PathAllowlist { if err := validateAbsoluteURLPath(allowedPath); err != nil { return fmt.Errorf("ui_config.metrics_proxy.path_allowlist: %v", err) } } for k, v := range rt.UIConfig.DashboardURLTemplates { if err := validateBasicName("ui_config.dashboard_url_templates key names", k, false); err != nil { return err } u, err := url.Parse(v) if err != nil || !(u.Scheme == "http" || u.Scheme == "https") { return fmt.Errorf("ui_config.dashboard_url_templates values must be a"+ " valid http or https URL. received: %q", rt.UIConfig.MetricsProxy.BaseURL) } } if !rt.DevMode { fi, err := os.Stat(rt.DataDir) switch { case err != nil && !os.IsNotExist(err): return fmt.Errorf("Error getting info on data_dir: %s", err) case err == nil && !fi.IsDir(): return fmt.Errorf("data_dir %q is not a directory", rt.DataDir) } } switch { case rt.NodeName == "": return fmt.Errorf("node_name cannot be empty") case dns.InvalidNameRe.MatchString(rt.NodeName): b.warn("Node name %q will not be discoverable "+ "via DNS due to invalid characters. Valid characters include "+ "all alpha-numerics and dashes.", rt.NodeName) case len(rt.NodeName) > dns.MaxLabelLength: b.warn("Node name %q will not be discoverable "+ "via DNS due to it being too long. Valid lengths are between "+ "1 and 63 bytes.", rt.NodeName) } if ipaddr.IsAny(rt.AdvertiseAddrLAN.IP) { return fmt.Errorf("Advertise address cannot be 0.0.0.0, :: or [::]") } if ipaddr.IsAny(rt.AdvertiseAddrWAN.IP) { return fmt.Errorf("Advertise WAN address cannot be 0.0.0.0, :: or [::]") } if err := b.validateSegments(rt); err != nil { return err } for _, a := range rt.DNSAddrs { if _, ok := a.(*net.UnixAddr); ok { return fmt.Errorf("DNS address cannot be a unix socket") } } for _, a := range rt.DNSRecursors { if ipaddr.IsAny(a) { return fmt.Errorf("DNS recursor address cannot be 0.0.0.0, :: or [::]") } } if !isValidAltDomain(rt.DNSAltDomain, rt.Datacenter) { return fmt.Errorf("alt_domain cannot start with {service,connect,node,query,addr,%s}", rt.Datacenter) } if rt.Bootstrap && !rt.ServerMode { return fmt.Errorf("'bootstrap = true' requires 'server = true'") } if rt.BootstrapExpect < 0 { return fmt.Errorf("bootstrap_expect cannot be %d. Must be greater than or equal to zero", rt.BootstrapExpect) } if rt.BootstrapExpect > 0 && !rt.ServerMode { return fmt.Errorf("'bootstrap_expect > 0' requires 'server = true'") } if rt.BootstrapExpect > 0 && rt.DevMode { return fmt.Errorf("'bootstrap_expect > 0' not allowed in dev mode") } if rt.BootstrapExpect > 0 && rt.Bootstrap { return fmt.Errorf("'bootstrap_expect > 0' and 'bootstrap = true' are mutually exclusive") } if rt.CheckOutputMaxSize < 1 { return fmt.Errorf("check_output_max_size must be positive, to discard check output use the discard_check_output flag") } if rt.AEInterval <= 0 { return fmt.Errorf("ae_interval cannot be %s. Must be positive", rt.AEInterval) } if rt.AutopilotMaxTrailingLogs < 0 { return fmt.Errorf("autopilot.max_trailing_logs cannot be %d. Must be greater than or equal to zero", rt.AutopilotMaxTrailingLogs) } if err := validateBasicName("primary_datacenter", rt.PrimaryDatacenter, true); err != nil { return err } // In DevMode, UI is enabled by default, so to enable rt.UIDir, don't perform this check if !rt.DevMode && rt.UIConfig.Enabled && rt.UIConfig.Dir != "" { return fmt.Errorf( "Both the ui_config.enabled and ui_config.dir (or -ui and -ui-dir) were specified, please provide only one.\n" + "If trying to use your own web UI resources, use ui_config.dir or the -ui-dir flag.\n" + "The web UI is included in the binary so use ui_config.enabled or the -ui flag to enable it") } if rt.DNSUDPAnswerLimit < 0 { return fmt.Errorf("dns_config.udp_answer_limit cannot be %d. Must be greater than or equal to zero", rt.DNSUDPAnswerLimit) } if rt.DNSARecordLimit < 0 { return fmt.Errorf("dns_config.a_record_limit cannot be %d. Must be greater than or equal to zero", rt.DNSARecordLimit) } if err := structs.ValidateNodeMetadata(rt.NodeMeta, false); err != nil { return fmt.Errorf("node_meta invalid: %v", err) } if rt.EncryptKey != "" { if _, err := decodeBytes(rt.EncryptKey); err != nil { return fmt.Errorf("encrypt has invalid key: %s", err) } } if rt.ConnectMeshGatewayWANFederationEnabled && !rt.ServerMode { return fmt.Errorf("'connect.enable_mesh_gateway_wan_federation = true' requires 'server = true'") } if rt.ConnectMeshGatewayWANFederationEnabled && strings.ContainsAny(rt.NodeName, "/") { return fmt.Errorf("'connect.enable_mesh_gateway_wan_federation = true' requires that 'node_name' not contain '/' characters") } if rt.ConnectMeshGatewayWANFederationEnabled { if len(rt.StartJoinAddrsWAN) > 0 { return fmt.Errorf("'start_join_wan' is incompatible with 'connect.enable_mesh_gateway_wan_federation = true'") } if len(rt.RetryJoinWAN) > 0 { return fmt.Errorf("'retry_join_wan' is incompatible with 'connect.enable_mesh_gateway_wan_federation = true'") } } if len(rt.PrimaryGateways) > 0 { if !rt.ServerMode { return fmt.Errorf("'primary_gateways' requires 'server = true'") } if rt.PrimaryDatacenter == rt.Datacenter { return fmt.Errorf("'primary_gateways' should only be configured in a secondary datacenter") } } // Check the data dir for signs of an un-migrated Consul 0.5.x or older // server. Consul refuses to start if this is present to protect a server // with existing data from starting on a fresh data set. if rt.ServerMode { mdbPath := filepath.Join(rt.DataDir, "mdb") if _, err := os.Stat(mdbPath); !os.IsNotExist(err) { if os.IsPermission(err) { return fmt.Errorf( "CRITICAL: Permission denied for data folder at %q!\n"+ "Consul will refuse to boot without access to this directory.\n"+ "Please correct permissions and try starting again.", mdbPath) } return fmt.Errorf("CRITICAL: Deprecated data folder found at %q!\n"+ "Consul will refuse to boot with this directory present.\n"+ "See https://www.consul.io/docs/upgrade-specific.html for more information.", mdbPath) } } inuse := map[string]string{} if err := addrsUnique(inuse, "DNS", rt.DNSAddrs); err != nil { // cannot happen since this is the first address // we leave this for consistency return err } if err := addrsUnique(inuse, "HTTP", rt.HTTPAddrs); err != nil { return err } if err := addrsUnique(inuse, "HTTPS", rt.HTTPSAddrs); err != nil { return err } if err := addrUnique(inuse, "RPC Advertise", rt.RPCAdvertiseAddr); err != nil { return err } if err := addrUnique(inuse, "Serf Advertise LAN", rt.SerfAdvertiseAddrLAN); err != nil { return err } // Validate serf WAN advertise address only when its set if rt.SerfAdvertiseAddrWAN != nil { if err := addrUnique(inuse, "Serf Advertise WAN", rt.SerfAdvertiseAddrWAN); err != nil { return err } } if b.err != nil { return b.err } // Check for errors in the service definitions for _, s := range rt.Services { if err := s.Validate(); err != nil { return fmt.Errorf("service %q: %s", s.Name, err) } } // Check for errors in the node check definitions for _, c := range rt.Checks { if err := c.CheckType().Validate(); err != nil { return fmt.Errorf("check %q: %w", c.Name, err) } } // Validate the given Connect CA provider config validCAProviders := map[string]bool{ "": true, structs.ConsulCAProvider: true, structs.VaultCAProvider: true, structs.AWSCAProvider: true, } if _, ok := validCAProviders[rt.ConnectCAProvider]; !ok { return fmt.Errorf("%s is not a valid CA provider", rt.ConnectCAProvider) } else { switch rt.ConnectCAProvider { case structs.ConsulCAProvider: if _, err := ca.ParseConsulCAConfig(rt.ConnectCAConfig); err != nil { return err } case structs.VaultCAProvider: if _, err := ca.ParseVaultCAConfig(rt.ConnectCAConfig); err != nil { return err } case structs.AWSCAProvider: if _, err := ca.ParseAWSCAConfig(rt.ConnectCAConfig); err != nil { return err } } } if rt.ServerMode && rt.AutoEncryptTLS { return fmt.Errorf("auto_encrypt.tls can only be used on a client.") } if !rt.ServerMode && rt.AutoEncryptAllowTLS { return fmt.Errorf("auto_encrypt.allow_tls can only be used on a server.") } if rt.ServerMode && rt.AdvertiseReconnectTimeout != 0 { return fmt.Errorf("advertise_reconnect_timeout can only be used on a client") } // ---------------------------------------------------------------- // warnings // if rt.ServerMode && !rt.DevMode && !rt.Bootstrap && rt.BootstrapExpect == 2 { b.warn(`bootstrap_expect = 2: A cluster with 2 servers will provide no failure tolerance. See https://www.consul.io/docs/internals/consensus.html#deployment-table`) } if rt.ServerMode && !rt.Bootstrap && rt.BootstrapExpect > 2 && rt.BootstrapExpect%2 == 0 { b.warn(`bootstrap_expect is even number: A cluster with an even number of servers does not achieve optimum fault tolerance. See https://www.consul.io/docs/internals/consensus.html#deployment-table`) } if rt.ServerMode && rt.Bootstrap && rt.BootstrapExpect == 0 { b.warn(`bootstrap = true: do not enable unless necessary`) } if rt.ServerMode && !rt.DevMode && !rt.Bootstrap && rt.BootstrapExpect > 1 { b.warn("bootstrap_expect > 0: expecting %d servers", rt.BootstrapExpect) } if rt.ServerMode { if rt.UseStreamingBackend && !rt.RPCConfig.EnableStreaming { b.warn("use_streaming_backend = true requires rpc.enable_streaming on servers to work properly") } } else if rt.RPCConfig.EnableStreaming { b.warn("rpc.enable_streaming = true has no effect when not running in server mode") } if rt.AutoEncryptAllowTLS { if !rt.VerifyIncoming && !rt.VerifyIncomingRPC { b.warn("if auto_encrypt.allow_tls is turned on, either verify_incoming or verify_incoming_rpc should be enabled. It is necessary to turn it off during a migration to TLS, but it should definitely be turned on afterwards.") } } if err := checkLimitsFromMaxConnsPerClient(rt.HTTPMaxConnsPerClient); err != nil { return err } if rt.AutoConfig.Enabled && rt.AutoEncryptTLS { return fmt.Errorf("both auto_encrypt.tls and auto_config.enabled cannot be set to true.") } if err := b.validateAutoConfig(rt); err != nil { return err } if err := validateRemoteScriptsChecks(rt); err != nil { // TODO: make this an error in a future version b.warn(err.Error()) } err := b.validateEnterpriseConfig(rt) return err } // addrUnique checks if the given address is already in use for another // protocol. func addrUnique(inuse map[string]string, name string, addr net.Addr) error { key := addr.Network() + ":" + addr.String() if other, ok := inuse[key]; ok { return fmt.Errorf("%s address %s already configured for %s", name, addr.String(), other) } inuse[key] = name return nil } // addrsUnique checks if any of the give addresses is already in use for // another protocol. func addrsUnique(inuse map[string]string, name string, addrs []net.Addr) error { for _, a := range addrs { if err := addrUnique(inuse, name, a); err != nil { return err } } return nil } // splitSlicesAndValues moves all slice values defined in c to 'slices' // and all other values to 'values'. func splitSlicesAndValues(c Config) (slices, values Config) { v, t := reflect.ValueOf(c), reflect.TypeOf(c) rs, rv := reflect.New(t), reflect.New(t) for i := 0; i < t.NumField(); i++ { f := t.Field(i) if f.Type.Kind() == reflect.Slice { rs.Elem().Field(i).Set(v.Field(i)) } else { rv.Elem().Field(i).Set(v.Field(i)) } } return rs.Elem().Interface().(Config), rv.Elem().Interface().(Config) } func (b *builder) warn(msg string, args ...interface{}) { b.Warnings = append(b.Warnings, fmt.Sprintf(msg, args...)) } func (b *builder) checkVal(v *CheckDefinition) *structs.CheckDefinition { if v == nil { return nil } id := types.CheckID(stringVal(v.ID)) return &structs.CheckDefinition{ ID: id, Name: stringVal(v.Name), Notes: stringVal(v.Notes), ServiceID: stringVal(v.ServiceID), Token: stringVal(v.Token), Status: stringVal(v.Status), ScriptArgs: v.ScriptArgs, HTTP: stringVal(v.HTTP), Header: v.Header, Method: stringVal(v.Method), Body: stringVal(v.Body), TCP: stringVal(v.TCP), Interval: b.durationVal(fmt.Sprintf("check[%s].interval", id), v.Interval), DockerContainerID: stringVal(v.DockerContainerID), Shell: stringVal(v.Shell), GRPC: stringVal(v.GRPC), GRPCUseTLS: boolVal(v.GRPCUseTLS), TLSServerName: stringVal(v.TLSServerName), TLSSkipVerify: boolVal(v.TLSSkipVerify), AliasNode: stringVal(v.AliasNode), AliasService: stringVal(v.AliasService), Timeout: b.durationVal(fmt.Sprintf("check[%s].timeout", id), v.Timeout), TTL: b.durationVal(fmt.Sprintf("check[%s].ttl", id), v.TTL), SuccessBeforePassing: intVal(v.SuccessBeforePassing), FailuresBeforeCritical: intVal(v.FailuresBeforeCritical), FailuresBeforeWarning: intValWithDefault(v.FailuresBeforeWarning, intVal(v.FailuresBeforeCritical)), H2PING: stringVal(v.H2PING), H2PingUseTLS: boolValWithDefault(v.H2PingUseTLS, true), DeregisterCriticalServiceAfter: b.durationVal(fmt.Sprintf("check[%s].deregister_critical_service_after", id), v.DeregisterCriticalServiceAfter), OutputMaxSize: intValWithDefault(v.OutputMaxSize, checks.DefaultBufSize), EnterpriseMeta: v.EnterpriseMeta.ToStructs(), } } func (b *builder) svcTaggedAddresses(v map[string]ServiceAddress) map[string]structs.ServiceAddress { if len(v) <= 0 { return nil } svcAddrs := make(map[string]structs.ServiceAddress) for addrName, addrConf := range v { addr := structs.ServiceAddress{} if addrConf.Address != nil { addr.Address = *addrConf.Address } if addrConf.Port != nil { addr.Port = *addrConf.Port } svcAddrs[addrName] = addr } return svcAddrs } func (b *builder) serviceVal(v *ServiceDefinition) *structs.ServiceDefinition { if v == nil { return nil } var checks structs.CheckTypes for _, check := range v.Checks { checks = append(checks, b.checkVal(&check).CheckType()) } if v.Check != nil { checks = append(checks, b.checkVal(v.Check).CheckType()) } kind := b.serviceKindVal(v.Kind) meta := make(map[string]string) if err := structs.ValidateServiceMetadata(kind, v.Meta, false); err != nil { b.err = multierror.Append(fmt.Errorf("invalid meta for service %s: %v", stringVal(v.Name), err)) } else { meta = v.Meta } serviceWeights := &structs.Weights{Passing: 1, Warning: 1} if v.Weights != nil { if v.Weights.Passing != nil { serviceWeights.Passing = *v.Weights.Passing } if v.Weights.Warning != nil { serviceWeights.Warning = *v.Weights.Warning } } if err := structs.ValidateWeights(serviceWeights); err != nil { b.err = multierror.Append(fmt.Errorf("Invalid weight definition for service %s: %s", stringVal(v.Name), err)) } if (v.Port != nil || v.Address != nil) && (v.SocketPath != nil) { b.err = multierror.Append( fmt.Errorf("service %s cannot have both socket path %s and address/port", stringVal(v.Name), stringVal(v.SocketPath)), b.err) } return &structs.ServiceDefinition{ Kind: kind, ID: stringVal(v.ID), Name: stringVal(v.Name), Tags: v.Tags, Address: stringVal(v.Address), TaggedAddresses: b.svcTaggedAddresses(v.TaggedAddresses), Meta: meta, Port: intVal(v.Port), SocketPath: stringVal(v.SocketPath), Token: stringVal(v.Token), EnableTagOverride: boolVal(v.EnableTagOverride), Weights: serviceWeights, Checks: checks, Proxy: b.serviceProxyVal(v.Proxy), Connect: b.serviceConnectVal(v.Connect), EnterpriseMeta: v.EnterpriseMeta.ToStructs(), } } func (b *builder) serviceKindVal(v *string) structs.ServiceKind { if v == nil { return structs.ServiceKindTypical } switch *v { case string(structs.ServiceKindConnectProxy): return structs.ServiceKindConnectProxy case string(structs.ServiceKindMeshGateway): return structs.ServiceKindMeshGateway case string(structs.ServiceKindTerminatingGateway): return structs.ServiceKindTerminatingGateway case string(structs.ServiceKindIngressGateway): return structs.ServiceKindIngressGateway default: return structs.ServiceKindTypical } } func (b *builder) serviceProxyVal(v *ServiceProxy) *structs.ConnectProxyConfig { if v == nil { return nil } return &structs.ConnectProxyConfig{ DestinationServiceName: stringVal(v.DestinationServiceName), DestinationServiceID: stringVal(v.DestinationServiceID), LocalServiceAddress: stringVal(v.LocalServiceAddress), LocalServicePort: intVal(v.LocalServicePort), LocalServiceSocketPath: stringVal(&v.LocalServiceSocketPath), Config: v.Config, Upstreams: b.upstreamsVal(v.Upstreams), MeshGateway: b.meshGatewayConfVal(v.MeshGateway), Expose: b.exposeConfVal(v.Expose), Mode: b.proxyModeVal(v.Mode), TransparentProxy: b.transparentProxyConfVal(v.TransparentProxy), } } func (b *builder) upstreamsVal(v []Upstream) structs.Upstreams { ups := make(structs.Upstreams, len(v)) for i, u := range v { ups[i] = structs.Upstream{ DestinationType: stringVal(u.DestinationType), DestinationNamespace: stringVal(u.DestinationNamespace), DestinationPartition: stringVal(u.DestinationPartition), DestinationName: stringVal(u.DestinationName), Datacenter: stringVal(u.Datacenter), LocalBindAddress: stringVal(u.LocalBindAddress), LocalBindPort: intVal(u.LocalBindPort), LocalBindSocketPath: stringVal(u.LocalBindSocketPath), LocalBindSocketMode: b.unixPermissionsVal("local_bind_socket_mode", u.LocalBindSocketMode), Config: u.Config, MeshGateway: b.meshGatewayConfVal(u.MeshGateway), } if ups[i].DestinationType == "" { ups[i].DestinationType = structs.UpstreamDestTypeService } } return ups } func (b *builder) meshGatewayConfVal(mgConf *MeshGatewayConfig) structs.MeshGatewayConfig { cfg := structs.MeshGatewayConfig{Mode: structs.MeshGatewayModeDefault} if mgConf == nil || mgConf.Mode == nil { // return defaults return cfg } mode, err := structs.ValidateMeshGatewayMode(*mgConf.Mode) if err != nil { b.err = multierror.Append(b.err, err) return cfg } cfg.Mode = mode return cfg } func (b *builder) dnsRecursorStrategyVal(v string) dns.RecursorStrategy { var out dns.RecursorStrategy switch dns.RecursorStrategy(v) { case dns.RecursorStrategyRandom: out = dns.RecursorStrategyRandom case dns.RecursorStrategySequential, "": out = dns.RecursorStrategySequential default: b.err = multierror.Append(b.err, fmt.Errorf("dns_config.recursor_strategy: invalid strategy: %q", v)) } return out } func (b *builder) exposeConfVal(v *ExposeConfig) structs.ExposeConfig { var out structs.ExposeConfig if v == nil { return out } out.Checks = boolVal(v.Checks) out.Paths = b.pathsVal(v.Paths) return out } func (b *builder) transparentProxyConfVal(tproxyConf *TransparentProxyConfig) structs.TransparentProxyConfig { var out structs.TransparentProxyConfig if tproxyConf == nil { return out } out.OutboundListenerPort = intVal(tproxyConf.OutboundListenerPort) out.DialedDirectly = boolVal(tproxyConf.DialedDirectly) return out } func (b *builder) proxyModeVal(v *string) structs.ProxyMode { if v == nil { return structs.ProxyModeDefault } mode, err := structs.ValidateProxyMode(*v) if err != nil { b.err = multierror.Append(b.err, err) } return mode } func (b *builder) pathsVal(v []ExposePath) []structs.ExposePath { paths := make([]structs.ExposePath, len(v)) for i, p := range v { paths[i] = structs.ExposePath{ ListenerPort: intVal(p.ListenerPort), Path: stringVal(p.Path), LocalPathPort: intVal(p.LocalPathPort), Protocol: stringVal(p.Protocol), } } return paths } func (b *builder) serviceConnectVal(v *ServiceConnect) *structs.ServiceConnect { if v == nil { return nil } sidecar := b.serviceVal(v.SidecarService) if sidecar != nil { // Sanity checks if sidecar.ID != "" { b.err = multierror.Append(b.err, fmt.Errorf("sidecar_service can't specify an ID")) sidecar.ID = "" } if sidecar.Connect != nil { if sidecar.Connect.SidecarService != nil { b.err = multierror.Append(b.err, fmt.Errorf("sidecar_service can't have a nested sidecar_service")) sidecar.Connect.SidecarService = nil } } } return &structs.ServiceConnect{ Native: boolVal(v.Native), SidecarService: sidecar, } } func (b *builder) uiConfigVal(v RawUIConfig) UIConfig { return UIConfig{ Enabled: boolVal(v.Enabled), Dir: stringVal(v.Dir), ContentPath: UIPathBuilder(stringVal(v.ContentPath)), MetricsProvider: stringVal(v.MetricsProvider), MetricsProviderFiles: v.MetricsProviderFiles, MetricsProviderOptionsJSON: stringVal(v.MetricsProviderOptionsJSON), MetricsProxy: b.uiMetricsProxyVal(v.MetricsProxy), DashboardURLTemplates: v.DashboardURLTemplates, } } func (b *builder) uiMetricsProxyVal(v RawUIMetricsProxy) UIMetricsProxy { var hdrs []UIMetricsProxyAddHeader for _, hdr := range v.AddHeaders { hdrs = append(hdrs, UIMetricsProxyAddHeader{ Name: stringVal(hdr.Name), Value: stringVal(hdr.Value), }) } return UIMetricsProxy{ BaseURL: stringVal(v.BaseURL), AddHeaders: hdrs, PathAllowlist: v.PathAllowlist, } } func boolValWithDefault(v *bool, defaultVal bool) bool { if v == nil { return defaultVal } return *v } func boolVal(v *bool) bool { if v == nil { return false } return *v } func (b *builder) durationValWithDefault(name string, v *string, defaultVal time.Duration) (d time.Duration) { if v == nil { return defaultVal } d, err := time.ParseDuration(*v) if err != nil { b.err = multierror.Append(fmt.Errorf("%s: invalid duration: %q: %s", name, *v, err)) } return d } func (b *builder) durationVal(name string, v *string) (d time.Duration) { return b.durationValWithDefault(name, v, 0) } func intValWithDefault(v *int, defaultVal int) int { if v == nil { return defaultVal } return *v } func intVal(v *int) int { if v == nil { return 0 } return *v } func uintVal(v *uint) uint { if v == nil { return 0 } return *v } func uint64Val(v *uint64) uint64 { if v == nil { return 0 } return *v } // Expect an octal permissions string, e.g. 0644 func (b *builder) unixPermissionsVal(name string, v *string) string { if v == nil { return "" } if _, err := strconv.ParseUint(*v, 8, 32); err == nil { return *v } b.err = multierror.Append(b.err, fmt.Errorf("%s: invalid mode: %s", name, *v)) return "0" } func (b *builder) portVal(name string, v *int) int { if v == nil || *v <= 0 { return -1 } if *v > 65535 { b.err = multierror.Append(b.err, fmt.Errorf("%s: invalid port: %d", name, *v)) } return *v } func stringValWithDefault(v *string, defaultVal string) string { if v == nil { return defaultVal } return *v } func stringVal(v *string) string { if v == nil { return "" } return *v } func float64ValWithDefault(v *float64, defaultVal float64) float64 { if v == nil { return defaultVal } return *v } func float64Val(v *float64) float64 { return float64ValWithDefault(v, 0) } func (b *builder) cidrsVal(name string, v []string) (nets []*net.IPNet) { if v == nil { return } for _, p := range v { _, net, err := net.ParseCIDR(strings.TrimSpace(p)) if err != nil { b.err = multierror.Append(b.err, fmt.Errorf("%s: invalid cidr: %s", name, p)) } nets = append(nets, net) } return } func (b *builder) tlsCipherSuites(name string, v *string) []uint16 { if v == nil { return nil } var a []uint16 a, err := tlsutil.ParseCiphers(*v) if err != nil { b.err = multierror.Append(b.err, fmt.Errorf("%s: invalid tls cipher suites: %s", name, err)) } return a } func (b *builder) nodeName(v *string) string { nodeName := stringVal(v) if nodeName == "" { fn := b.opts.hostname if fn == nil { fn = os.Hostname } name, err := fn() if err != nil { b.err = multierror.Append(b.err, fmt.Errorf("node_name: %s", err)) return "" } nodeName = name } return strings.TrimSpace(nodeName) } // expandAddrs expands the go-sockaddr template in s and returns the // result as a list of *net.IPAddr and *net.UnixAddr. func (b *builder) expandAddrs(name string, s *string) []net.Addr { if s == nil || *s == "" { return nil } x, err := template.Parse(*s) if err != nil { b.err = multierror.Append(b.err, fmt.Errorf("%s: error parsing %q: %s", name, *s, err)) return nil } var addrs []net.Addr for _, a := range strings.Fields(x) { switch { case strings.HasPrefix(a, "unix://"): addrs = append(addrs, &net.UnixAddr{Name: a[len("unix://"):], Net: "unix"}) default: // net.ParseIP does not like '[::]' ip := net.ParseIP(a) if a == "[::]" { ip = net.ParseIP("::") } if ip == nil { b.err = multierror.Append(b.err, fmt.Errorf("%s: invalid ip address: %s", name, a)) return nil } addrs = append(addrs, &net.IPAddr{IP: ip}) } } return addrs } // expandOptionalAddrs expands the go-sockaddr template in s and returns the // result as a list of strings. If s does not contain a go-sockaddr template, // the result list will contain the input string as a single element with no // error set. In contrast to expandAddrs, expandOptionalAddrs does not validate // if the result contains valid addresses and returns a list of strings. // However, if the expansion of the go-sockaddr template fails an error is set. func (b *builder) expandOptionalAddrs(name string, s *string) []string { if s == nil || *s == "" { return nil } x, err := template.Parse(*s) if err != nil { b.err = multierror.Append(b.err, fmt.Errorf("%s: error parsing %q: %s", name, *s, err)) return nil } if x != *s { // A template has been expanded, split the results from go-sockaddr return strings.Fields(x) } else { // No template has been expanded, pass through the input return []string{*s} } } func (b *builder) expandAllOptionalAddrs(name string, addrs []string) []string { out := make([]string, 0, len(addrs)) for _, a := range addrs { expanded := b.expandOptionalAddrs(name, &a) if expanded != nil { out = append(out, expanded...) } } return out } // expandIPs expands the go-sockaddr template in s and returns a list of // *net.IPAddr. If one of the expanded addresses is a unix socket // address an error is set and nil is returned. func (b *builder) expandIPs(name string, s *string) []*net.IPAddr { if s == nil || *s == "" { return nil } addrs := b.expandAddrs(name, s) var x []*net.IPAddr for _, addr := range addrs { switch a := addr.(type) { case *net.IPAddr: x = append(x, a) case *net.UnixAddr: b.err = multierror.Append(b.err, fmt.Errorf("%s cannot be a unix socket", name)) return nil default: b.err = multierror.Append(b.err, fmt.Errorf("%s has invalid address type %T", name, a)) return nil } } return x } // expandFirstAddr expands the go-sockaddr template in s and returns the // first address which is either a *net.IPAddr or a *net.UnixAddr. If // the template expands to multiple addresses an error is set and nil // is returned. func (b *builder) expandFirstAddr(name string, s *string) net.Addr { if s == nil || *s == "" { return nil } addrs := b.expandAddrs(name, s) if len(addrs) == 0 { return nil } if len(addrs) > 1 { var x []string for _, a := range addrs { x = append(x, a.String()) } b.err = multierror.Append(b.err, fmt.Errorf("%s: multiple addresses found: %s", name, strings.Join(x, " "))) return nil } return addrs[0] } // expandFirstIP expands the go-sockaddr template in s and returns the // first address if it is not a unix socket address. If the template // expands to multiple addresses an error is set and nil is returned. func (b *builder) expandFirstIP(name string, s *string) *net.IPAddr { if s == nil || *s == "" { return nil } addr := b.expandFirstAddr(name, s) if addr == nil { return nil } switch a := addr.(type) { case *net.IPAddr: return a case *net.UnixAddr: b.err = multierror.Append(b.err, fmt.Errorf("%s cannot be a unix socket", name)) return nil default: b.err = multierror.Append(b.err, fmt.Errorf("%s has invalid address type %T", name, a)) return nil } } func makeIPAddr(pri *net.IPAddr, sec *net.IPAddr) *net.IPAddr { if pri != nil { return pri } return sec } func (b *builder) makeTCPAddr(pri *net.IPAddr, sec net.Addr, port int) *net.TCPAddr { if pri == nil && reflect.ValueOf(sec).IsNil() || port <= 0 { return nil } addr := pri if addr == nil { switch a := sec.(type) { case *net.IPAddr: addr = a case *net.TCPAddr: addr = &net.IPAddr{IP: a.IP} default: panic(fmt.Sprintf("makeTCPAddr requires a net.IPAddr or a net.TCPAddr. Got %T", a)) } } return &net.TCPAddr{IP: addr.IP, Port: port} } // makeAddr creates an *net.TCPAddr or a *net.UnixAddr from either the // primary or secondary address and the given port. If the port is <= 0 // then the address is considered to be disabled and nil is returned. func (b *builder) makeAddr(pri, sec net.Addr, port int) net.Addr { if reflect.ValueOf(pri).IsNil() && reflect.ValueOf(sec).IsNil() || port <= 0 { return nil } addr := pri if addr == nil { addr = sec } switch a := addr.(type) { case *net.IPAddr: return &net.TCPAddr{IP: a.IP, Port: port} case *net.UnixAddr: return a default: panic(fmt.Sprintf("invalid address type %T", a)) } } // makeAddrs creates a list of *net.TCPAddr or *net.UnixAddr entries // from either the primary or secondary addresses and the given port. // If the port is <= 0 then the address is considered to be disabled // and nil is returned. func (b *builder) makeAddrs(pri []net.Addr, sec []*net.IPAddr, port int) []net.Addr { if len(pri) == 0 && len(sec) == 0 || port <= 0 { return nil } addrs := pri if len(addrs) == 0 { addrs = []net.Addr{} for _, a := range sec { addrs = append(addrs, a) } } var x []net.Addr for _, a := range addrs { x = append(x, b.makeAddr(a, nil, port)) } return x } func (b *builder) autoConfigVal(raw AutoConfigRaw, agentPartition string) AutoConfig { var val AutoConfig val.Enabled = boolValWithDefault(raw.Enabled, false) val.IntroToken = stringVal(raw.IntroToken) // default the IntroToken to the env variable if specified. if envToken := os.Getenv("CONSUL_INTRO_TOKEN"); envToken != "" { if val.IntroToken != "" { b.warn("Both auto_config.intro_token and the CONSUL_INTRO_TOKEN environment variable are set. Using the value from the environment variable") } val.IntroToken = envToken } val.IntroTokenFile = stringVal(raw.IntroTokenFile) // These can be go-discover values and so don't have to resolve fully yet val.ServerAddresses = b.expandAllOptionalAddrs("auto_config.server_addresses", raw.ServerAddresses) val.DNSSANs = raw.DNSSANs for _, i := range raw.IPSANs { ip := net.ParseIP(i) if ip == nil { b.warn(fmt.Sprintf("Cannot parse ip %q from auto_config.ip_sans", i)) continue } val.IPSANs = append(val.IPSANs, ip) } val.Authorizer = b.autoConfigAuthorizerVal(raw.Authorization, agentPartition) return val } func (b *builder) autoConfigAuthorizerVal(raw AutoConfigAuthorizationRaw, agentPartition string) AutoConfigAuthorizer { // Our config file syntax wraps the static authorizer configuration in a "static" stanza. However // internally we do not support multiple configured authorization types so the RuntimeConfig just // inlines the static one. While we can and probably should extend the authorization types in the // future to support dynamic authorizers (ACL Auth Methods configured via normal APIs) its not // needed right now so the configuration types will remain simplistic until they need to be otherwise. var val AutoConfigAuthorizer entMeta := structs.DefaultEnterpriseMetaInPartition(agentPartition) entMeta.Normalize() val.Enabled = boolValWithDefault(raw.Enabled, false) val.ClaimAssertions = raw.Static.ClaimAssertions val.AllowReuse = boolValWithDefault(raw.Static.AllowReuse, false) val.AuthMethod = structs.ACLAuthMethod{ Name: "Auto Config Authorizer", Type: "jwt", EnterpriseMeta: *entMeta, Config: map[string]interface{}{ "JWTSupportedAlgs": raw.Static.JWTSupportedAlgs, "BoundAudiences": raw.Static.BoundAudiences, "ClaimMappings": raw.Static.ClaimMappings, "ListClaimMappings": raw.Static.ListClaimMappings, "OIDCDiscoveryURL": stringVal(raw.Static.OIDCDiscoveryURL), "OIDCDiscoveryCACert": stringVal(raw.Static.OIDCDiscoveryCACert), "JWKSURL": stringVal(raw.Static.JWKSURL), "JWKSCACert": stringVal(raw.Static.JWKSCACert), "JWTValidationPubKeys": raw.Static.JWTValidationPubKeys, "BoundIssuer": stringVal(raw.Static.BoundIssuer), "ExpirationLeeway": b.durationVal("auto_config.authorization.static.expiration_leeway", raw.Static.ExpirationLeeway), "NotBeforeLeeway": b.durationVal("auto_config.authorization.static.not_before_leeway", raw.Static.NotBeforeLeeway), "ClockSkewLeeway": b.durationVal("auto_config.authorization.static.clock_skew_leeway", raw.Static.ClockSkewLeeway), }, } return val } func (b *builder) validateAutoConfig(rt RuntimeConfig) error { autoconf := rt.AutoConfig if err := validateAutoConfigAuthorizer(rt); err != nil { return err } if !autoconf.Enabled { return nil } // Right now we require TLS as everything we are going to transmit via auto-config is sensitive. Signed Certificates, Tokens // and other encryption keys. This must be transmitted over a secure connection so we don't allow doing otherwise. if !rt.VerifyOutgoing { return fmt.Errorf("auto_config.enabled cannot be set without configuring TLS for server communications") } // Auto Config doesn't currently support configuring servers if rt.ServerMode { return fmt.Errorf("auto_config.enabled cannot be set to true for server agents.") } // When both are set we will prefer the given value over the file. if autoconf.IntroToken != "" && autoconf.IntroTokenFile != "" { b.warn("Both an intro token and intro token file are set. The intro token will be used instead of the file") } else if autoconf.IntroToken == "" && autoconf.IntroTokenFile == "" { return fmt.Errorf("One of auto_config.intro_token, auto_config.intro_token_file or the CONSUL_INTRO_TOKEN environment variable must be set to enable auto_config") } if len(autoconf.ServerAddresses) == 0 { // TODO (autoconf) can we/should we infer this from the join/retry join addresses. I think no, as we will potentially // be overriding those retry join addresses with the autoconf process anyways. return fmt.Errorf("auto_config.enabled is set without providing a list of addresses") } return nil } func validateAutoConfigAuthorizer(rt RuntimeConfig) error { authz := rt.AutoConfig.Authorizer if !authz.Enabled { return nil } // When in a secondary datacenter with ACLs enabled, we require token replication to be enabled // as that is what allows us to create the local tokens to distribute to the clients. Otherwise // we would have to have a token with the ability to create ACL tokens in the primary and make // RPCs in response to auto config requests. if rt.ACLsEnabled && rt.PrimaryDatacenter != rt.Datacenter && !rt.ACLTokenReplication { return fmt.Errorf("Enabling auto-config authorization (auto_config.authorization.enabled) in non primary datacenters with ACLs enabled (acl.enabled) requires also enabling ACL token replication (acl.enable_token_replication)") } // Auto Config Authorization is only supported on servers if !rt.ServerMode { return fmt.Errorf("auto_config.authorization.enabled cannot be set to true for client agents") } // Right now we require TLS as everything we are going to transmit via auto-config is sensitive. Signed Certificates, Tokens // and other encryption keys. This must be transmitted over a secure connection so we don't allow doing otherwise. if rt.CertFile == "" { return fmt.Errorf("auto_config.authorization.enabled cannot be set without providing a TLS certificate for the server") } // build out the validator to ensure that the given configuration was valid null := hclog.NewNullLogger() validator, err := ssoauth.NewValidator(null, &authz.AuthMethod) if err != nil { return fmt.Errorf("auto_config.authorization.static has invalid configuration: %v", err) } // create a blank identity for use to validate the claim assertions. blankID := validator.NewIdentity() varMap := map[string]string{ "node": "fake", "segment": "fake", } // validate all the claim assertions for _, raw := range authz.ClaimAssertions { // validate any HIL filled, err := libtempl.InterpolateHIL(raw, varMap, true) if err != nil { return fmt.Errorf("auto_config.authorization.static.claim_assertion %q is invalid: %v", raw, err) } // validate the bexpr syntax - note that for now all the keys mapped by the claim mappings // are not validateable due to them being put inside a map. Some bexpr updates to setup keys // from current map keys would probably be nice here. if _, err := bexpr.CreateEvaluatorForType(filled, nil, blankID.SelectableFields); err != nil { return fmt.Errorf("auto_config.authorization.static.claim_assertion %q is invalid: %v", raw, err) } } return nil } // decodeBytes returns the encryption key decoded. func decodeBytes(key string) ([]byte, error) { return base64.StdEncoding.DecodeString(key) } func isIPAddr(a net.Addr) bool { _, ok := a.(*net.IPAddr) return ok } func isUnixAddr(a net.Addr) bool { _, ok := a.(*net.UnixAddr) return ok } // isValidAltDomain returns true if the given domain is not prefixed // by keywords used when dispatching DNS requests func isValidAltDomain(domain, datacenter string) bool { reAltDomain := regexp.MustCompile( fmt.Sprintf( "^(service|connect|node|query|addr|%s)\\.(%s\\.)?", datacenter, datacenter, ), ) return !reAltDomain.MatchString(domain) } // UIPathBuilder checks to see if there was a path set // If so, adds beginning and trailing slashes to UI path func UIPathBuilder(UIContentString string) string { if UIContentString != "" { var fmtedPath string fmtedPath = strings.Trim(UIContentString, "/") fmtedPath = "/" + fmtedPath + "/" return fmtedPath } return "/ui/" } const remoteScriptCheckSecurityWarning = "using enable-script-checks without ACLs and without allow_write_http_from is DANGEROUS, use enable-local-script-checks instead, see https://www.hashicorp.com/blog/protecting-consul-from-rce-risk-in-specific-configurations/" // validateRemoteScriptsChecks returns an error if EnableRemoteScriptChecks is // enabled without other security features, which mitigate the risk of executing // remote scripts. func validateRemoteScriptsChecks(conf RuntimeConfig) error { if conf.EnableRemoteScriptChecks && !conf.ACLsEnabled && len(conf.AllowWriteHTTPFrom) == 0 { return errors.New(remoteScriptCheckSecurityWarning) } return nil } func validateAbsoluteURLPath(p string) error { if !path.IsAbs(p) { return fmt.Errorf("path %q is not an absolute path", p) } // A bit more extra validation that these are actually paths. u, err := url.Parse(p) if err != nil || u.Scheme != "" || u.Opaque != "" || u.User != nil || u.Host != "" || u.RawQuery != "" || u.Fragment != "" || u.Path != p { return fmt.Errorf("path %q is not an absolute path", p) } return nil }