diff --git a/.gitignore b/.gitignore index f1f7908..9a26771 100644 --- a/.gitignore +++ b/.gitignore @@ -1 +1,3 @@ -./configurator +**configurator** +**.yaml +**.yml diff --git a/README.md b/README.md index 08ba639..2a94559 100644 --- a/README.md +++ b/README.md @@ -4,10 +4,12 @@ Configurator is a tool that fetchs data from an instance of [SMD](https://github ## Building and Usage -Configurator is built using Go: +Configurator is built using standard `go` build tools. The project separates the client and server with build tags. To get started, clone the project, download the dependencies, and build the project: ```bash -go mod tidy && go build +git clone https://github.com/OpenCHAMI/configurator.git +go mod tidy +go build --tags all # equivalent to `go build --tags client,server`` ``` To use the tool, run the following: @@ -18,6 +20,20 @@ To use the tool, run the following: This will generate a new DHCP `dnsmasq` config file based on the Jinja 2 template specified in the config file for "dnsmasq". The `--target` flag is set by passing an argument in the form of "type:template" to specify the type of config file being generate and the template file to use respectively. The configurator requires valid access token when making requests to an instance of SMD that has protected routes. +The tool can also be ran as a microservice: + +```bash +./configurator serve --config config.yaml +``` + +Once the server is up and listening for HTTP requests, you can try making a request to it with curl: + +```bash +curl http://127.0.0.1:3334/target?type=dhcp&template=dnsmasq +``` + +This will do the same thing as the `generate` subcommand, but remotely. + ## Configuration Here is an example config file to start using configurator: @@ -31,9 +47,9 @@ templates: coredhcp: templates/dhcp/coredhcp.config.jinja dnsmasq: templates/dhcp/dnsmasq.conf.jinja syslog: templates/syslog.jinja - ansible: templates/ansible - powerman: templates/powerman - conman: templates/conman + ansible: templates/ansible.j2 + powerman: templates/powerman.jinja + conman: templates/conman.jinja ``` diff --git a/cmd/generate.go b/cmd/generate.go index bdaa3ba..10dc3f4 100644 --- a/cmd/generate.go +++ b/cmd/generate.go @@ -1,3 +1,6 @@ +//go:build client || all +// +build client all + package cmd import ( @@ -43,11 +46,13 @@ var generateCmd = &cobra.Command{ for _, target := range targets { // split the target and type tmp := strings.Split(target, ":") - configType := tmp[0] - configTemplate := tmp[1] + g := generator.Generator{ + Type: tmp[0], + Template: tmp[1], + } // NOTE: we probably don't want to hardcode the types, but should do for now - if configType == "dhcp" { + if g.Type == "dhcp" { // fetch eths from SMD eths, err := client.FetchEthernetInterfaces() if err != nil { @@ -57,17 +62,17 @@ var generateCmd = &cobra.Command{ break } // generate a new config from that data - g := generator.New() - g.GenerateDHCP(config, configTemplate, eths) - } else if configType == "dns" { + + g.GenerateDHCP(&config, eths) + } else if g.Type == "dns" { // TODO: fetch from SMD // TODO: generate config from pulled info - } else if configType == "syslog" { + } else if g.Type == "syslog" { - } else if configType == "ansible" { + } else if g.Type == "ansible" { - } else if configType == "warewulf" { + } else if g.Type == "warewulf" { } diff --git a/cmd/root.go b/cmd/root.go index a06a0f9..be4697d 100644 --- a/cmd/root.go +++ b/cmd/root.go @@ -11,7 +11,7 @@ import ( var ( configPath string - config *configurator.Config + config configurator.Config ) var rootCmd = &cobra.Command{ @@ -34,7 +34,7 @@ func Execute() { func init() { cobra.OnInitialize(initConfig) - rootCmd.PersistentFlags().StringVar(&configPath, "config", "", "set the config path") + rootCmd.PersistentFlags().StringVarP(&configPath, "config", "c", "", "set the config path") } func initConfig() { diff --git a/cmd/serve.go b/cmd/serve.go new file mode 100644 index 0000000..0a912f2 --- /dev/null +++ b/cmd/serve.go @@ -0,0 +1,37 @@ +//go:build server || all +// +build server all + +package cmd + +import ( + "errors" + "fmt" + "net/http" + "os" + + "github.com/OpenCHAMI/configurator/internal/server" + "github.com/sirupsen/logrus" + "github.com/spf13/cobra" +) + +var serveCmd = &cobra.Command{ + Use: "serve", + Short: "Start configurator as a server and listen for requests", + Run: func(cmd *cobra.Command, args []string) { + // set up the routes and start the server + server := server.New() + err := server.Start(&config) + if errors.Is(err, http.ErrServerClosed) { + fmt.Printf("Server closed.") + } else if err != nil { + logrus.Errorf("failed to start server: %v", err) + os.Exit(1) + } + }, +} + +func init() { + serveCmd.Flags().StringVar(&config.Server.Host, "host", config.Server.Host, "set the server host") + serveCmd.Flags().IntVar(&config.Server.Port, "port", config.Server.Port, "set the server port") + rootCmd.AddCommand(serveCmd) +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..60d12a8 --- /dev/null +++ b/go.mod @@ -0,0 +1,37 @@ +module github.com/OpenCHAMI/configurator + +go 1.21.5 + +require ( + github.com/OpenCHAMI/jwtauth/v5 v5.0.0-20240321222802-e6cb468a2a18 + github.com/go-chi/chi/v5 v5.0.12 + github.com/lestrrat-go/jwx v1.2.29 + github.com/nikolalohinski/gonja/v2 v2.2.0 + github.com/sirupsen/logrus v1.9.3 + github.com/spf13/cobra v1.8.0 + gopkg.in/yaml.v2 v2.4.0 +) + +require ( + github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect + github.com/dustin/go-humanize v1.0.1 // indirect + github.com/goccy/go-json v0.10.2 // indirect + github.com/inconshreveable/mousetrap v1.1.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/kr/text v0.1.0 // indirect + github.com/lestrrat-go/backoff/v2 v2.0.8 // indirect + github.com/lestrrat-go/blackmagic v1.0.2 // indirect + github.com/lestrrat-go/httpcc v1.0.1 // indirect + github.com/lestrrat-go/httprc v1.0.4 // indirect + github.com/lestrrat-go/iter v1.0.2 // indirect + github.com/lestrrat-go/jwx/v2 v2.0.20 // indirect + github.com/lestrrat-go/option v1.0.1 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/pkg/errors v0.9.1 // indirect + github.com/segmentio/asm v1.2.0 // indirect + github.com/spf13/pflag v1.0.5 // indirect + golang.org/x/crypto v0.21.0 // indirect + golang.org/x/sys v0.18.0 // indirect + golang.org/x/text v0.14.0 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..6fbadd2 --- /dev/null +++ b/go.sum @@ -0,0 +1,145 @@ +github.com/MakeNowJust/heredoc v1.0.0 h1:cXCdzVdstXyiTqTvfqk9SDHpKNjxuom+DOlyEeQ4pzQ= +github.com/MakeNowJust/heredoc v1.0.0/go.mod h1:mG5amYoWBHf8vpLOuehzbGGw0EHxpZZ6lCpQ4fNJ8LE= +github.com/OpenCHAMI/jwtauth/v5 v5.0.0-20240321222802-e6cb468a2a18 h1:oBPtXp9RVm9lk5zTmDLf+Vh21yDHpulBxUqGJQjwQCk= +github.com/OpenCHAMI/jwtauth/v5 v5.0.0-20240321222802-e6cb468a2a18/go.mod h1:ggNHWgLfW/WRXcE8ZZC4S7UwHif16HVmyowOCWdNSN8= +github.com/cpuguy83/go-md2man/v2 v2.0.3/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o= 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d817677..c674290 100644 --- a/internal/config.go +++ b/internal/config.go @@ -8,16 +8,27 @@ import ( "gopkg.in/yaml.v2" ) +type Options struct { + JwksUri string `yaml:"jwks-uri"` + JwksRetries int `yaml:"jwks-retries"` +} + +type Server struct { + Host string `yaml:"host"` + Port int `yaml:"port"` +} type Config struct { Version string `yaml:"version"` SmdHost string `yaml:"smd-host"` SmdPort int `yaml:"smd-port"` AccessToken string `yaml:"access-token"` TemplatePaths map[string]string `yaml:"templates"` + Server Server `yaml:"server"` + Options Options `yaml:"options"` } -func NewConfig() *Config { - return &Config{ +func NewConfig() Config { + return Config{ Version: "", SmdHost: "http://127.0.0.1", SmdPort: 27779, @@ -28,11 +39,19 @@ func NewConfig() *Config { "powerman": "templates/powerman", "conman": "templates/conman", }, + Server: Server{ + Host: "127.0.0.1", + Port: 3334, + }, + Options: Options{ + JwksUri: "", + JwksRetries: 5, + }, } } -func LoadConfig(path string) *Config { - var c *Config = NewConfig() +func LoadConfig(path string) Config { + var c Config = NewConfig() file, err := os.ReadFile(path) if err != nil { log.Printf("failed to read config file: %v\n", err) diff --git a/internal/generator/generator.go b/internal/generator/generator.go index 6fbb849..589adb6 100644 --- a/internal/generator/generator.go +++ b/internal/generator/generator.go @@ -11,6 +11,8 @@ import ( ) type Generator struct { + Type string + Template string } func New() *Generator { @@ -24,12 +26,11 @@ func (g *Generator) GenerateDNS(config *configurator.Config) { // TODO: print generated config file to STDOUT } -func (g *Generator) GenerateDHCP(config *configurator.Config, target string, eths []configurator.EthernetInterface) error { +func (g *Generator) GenerateDHCP(config *configurator.Config, eths []configurator.EthernetInterface) error { // generate file using gonja template - // TODO: load template file for DHCP - path := config.TemplatePaths[target] + path := config.TemplatePaths[g.Template] fmt.Printf("path: %s\neth count: %v\n", path, len(eths)) - t, err := gonja.FromFile(config.TemplatePaths[target]) + t, err := gonja.FromFile(path) if err != nil { return fmt.Errorf("failed to read template from file: %v", err) } diff --git a/internal/server/server.go b/internal/server/server.go new file mode 100644 index 0000000..b632ff3 --- /dev/null +++ b/internal/server/server.go @@ -0,0 +1,105 @@ +//go:build server || all +// +build server all + +package server + +import ( + "fmt" + "net/http" + "time" + + configurator "github.com/OpenCHAMI/configurator/internal" + "github.com/OpenCHAMI/configurator/internal/generator" + "github.com/OpenCHAMI/jwtauth/v5" + "github.com/go-chi/chi/v5" + "github.com/go-chi/chi/v5/middleware" + "github.com/sirupsen/logrus" +) + +var ( + tokenAuth *jwtauth.JWTAuth = nil +) + +type Server struct { + *http.Server +} + +func New() *Server { + return &Server{ + Server: &http.Server{}, + } +} + +func (s *Server) Start(config *configurator.Config) error { + // create client just for the server to use to fetch data from SMD + client := &configurator.SmdClient{ + Host: config.SmdHost, + Port: config.SmdPort, + } + + // set the server address with config values + s.Server.Addr = fmt.Sprintf("%s:%d", config.Server.Host, config.Server.Port) + + // fetch JWKS public key from authorization server + if config.Options.JwksUri != "" && tokenAuth == nil { + for i := 0; i < config.Options.JwksRetries; i++ { + var err error + tokenAuth, err = configurator.FetchPublicKeyFromURL(config.Options.JwksUri) + if err != nil { + logrus.Errorf("failed to fetch JWKS: %w", err) + continue + } + break + } + } + + // create new go-chi router with its routes + router := chi.NewRouter() + router.Use(middleware.RedirectSlashes) + router.Use(middleware.Timeout(60 * time.Second)) + router.Group(func(r chi.Router) { + if config.Options.JwksUri != "" { + r.Use( + jwtauth.Verifier(tokenAuth), + jwtauth.Authenticator(tokenAuth), + ) + } + r.HandleFunc("/target", func(w http.ResponseWriter, r *http.Request) { + g := generator.Generator{ + Type: r.URL.Query().Get("type"), + Template: r.URL.Query().Get("template"), + } + + // NOTE: we probably don't want to hardcode the types, but should do for now + if g.Type == "dhcp" { + // fetch eths from SMD + eths, err := client.FetchEthernetInterfaces() + if err != nil { + logrus.Errorf("failed to fetch DHCP metadata: %v\n", err) + w.Write([]byte("An error has occurred")) + return + } + if len(eths) <= 0 { + logrus.Warnf("no ethernet interfaces found") + w.Write([]byte("no ethernet interfaces found")) + return + } + // generate a new config from that data + + err = g.GenerateDHCP(config, eths) + if err != nil { + logrus.Errorf("failed to generate DHCP: %v", err) + w.Write([]byte("An error has occurred.")) + return + } + } + }) + r.HandleFunc("/templates", func(w http.ResponseWriter, r *http.Request) { + // TODO: handle GET request + // TODO: handle POST request + + }) + }) + s.Handler = router + return s.ListenAndServe() +}