343 lines
11 KiB
Go
343 lines
11 KiB
Go
/*
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Copyright © 2023 AGECEM
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*/
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package cmd
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import (
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"context"
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"crypto/subtle"
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"fmt"
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"log"
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"embed"
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"html/template"
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"io"
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"net/http"
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"sort"
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"github.com/minio/minio-go/v7"
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"github.com/minio/minio-go/v7/pkg/credentials"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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"git.agecem.com/agecem/agecem-org/public"
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"github.com/labstack/echo/v4"
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"github.com/labstack/echo/v4/middleware"
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)
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type Template struct {
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templates *template.Template
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}
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var embedFS embed.FS
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// serverCmd represents the server command
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var serverCmd = &cobra.Command{
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Use: "server",
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Short: "Démarrer le serveur web",
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Run: func(cmd *cobra.Command, args []string) {
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RunServer()
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},
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}
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func init() {
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rootCmd.AddCommand(serverCmd)
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embedFS = public.GetEmbedFS()
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// server.port - --server-port
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serverCmd.Flags().Int("server-port", 8080, "Port to run the webserver on (config: server.port)")
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viper.BindPFlag("server.port", serverCmd.Flags().Lookup("server-port"))
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// server.documents.location - --server-documents-location
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serverCmd.Flags().String("server-documents-location", "us-east", "Storage bucket location (config: server.documents.location)")
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viper.BindPFlag("server.documents.location", serverCmd.Flags().Lookup("server-documents-location"))
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// server.documents.endpoint - --server-documents-endpoint
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serverCmd.Flags().String("server-documents-endpoint", "minio:9000", "Storage server endpoint (config: server.documents.endpoint)")
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viper.BindPFlag("server.documents.endpoint", serverCmd.Flags().Lookup("server-documents-endpoint"))
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// server.documents.access_key_id - --server-documents-access-key-id
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serverCmd.Flags().String("server-documents-access-key-id", "", "Storage server access key id (config: server.documents.access_key_id)")
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viper.BindPFlag("documents.accessKeyID", serverCmd.Flags().Lookup("documents-access-key-id"))
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// server.documents.secret_access_key - --server-documents-secret-access-key
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serverCmd.Flags().String("server-documents-secret-access-key", "", "Storage server secret access key (config: server.documents.secret_access_key)")
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viper.BindPFlag("server.documents.secret_access_key", serverCmd.Flags().Lookup("server-documents-secret-access-key"))
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// server.documents.use_ssl - --server-documents-use-ssl
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serverCmd.Flags().Bool("server-documents-use-ssl", true, "Storage server SSL status (config: server.documents.use_ssl)")
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viper.BindPFlag("server.documents.use_ssl", serverCmd.Flags().Lookup("server-documents-use-ssl"))
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// server.documents.buckets - --server-documents-buckets
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serverCmd.Flags().StringSlice("server-documents-buckets", nil, "Buckets that are allowed to be accessed by the API (config: server.documents.buckets)")
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viper.BindPFlag("server.documents.buckets", serverCmd.Flags().Lookup("server-documents-buckets"))
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// server.api.auth - --server-api-auth
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serverCmd.Flags().Bool("server-api-auth", false, "Enable to allow key authentication for /v1 routes (config: server.api.auth)")
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viper.BindPFlag("server.api.auth", serverCmd.Flags().Lookup("server-api-auth"))
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// server.api.key - --server-api-key
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serverCmd.Flags().String("server-api-key", "", "Key to use for authenticating to /v1 routes")
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viper.BindPFlag("server.api.key", serverCmd.Flags().Lookup("server-api-key"))
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}
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func RunServer() {
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e := echo.New()
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t := &Template{
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templates: template.Must(template.ParseFS(embedFS, "html/*.gohtml")),
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}
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e.Renderer = t
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e.Pre(middleware.RemoveTrailingSlash())
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groupV1 := e.Group("/v1")
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groupV1.Use(middleware.AddTrailingSlash())
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if viper.GetBool("server.api.auth") {
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if len(viper.GetString("server.api.key")) < 10 {
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log.Fatal("server.api.auth is enabled, but server.api.key is too small (needs at least 10 characters)")
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}
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groupV1.Use(middleware.KeyAuth(func(key string, c echo.Context) (bool, error) {
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return subtle.ConstantTimeCompare([]byte(key), []byte(viper.GetString("server.api.key"))) == 1, nil
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}))
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}
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// API Routes
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groupV1.GET("", handleV1)
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groupV1.POST("/seed", handleV1Seed)
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groupV1.GET("/bucket", handleV1BucketList)
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groupV1.GET("/bucket/:bucket", handleV1BucketRead)
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// Static Routes
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e.GET("/static/general.css", handleStaticCSSGeneral)
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e.GET("/static/index.css", handleStaticCSSIndex)
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// HTML Routes
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e.GET("/", handleIndex)
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e.GET("/a-propos", handleAPropos)
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e.GET("/actualite", handleActualite)
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e.GET("/actualite/:article", handleActualiteArticle)
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e.GET("/vie-etudiante", handleVieEtudiante)
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e.GET("/vie-etudiante/:organisme", handleVieEtudianteOrganisme)
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e.GET("/documentation", handleDocumentation)
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e.GET("/formulaires", handleFormulaires)
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e.Logger.Fatal(e.Start(
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fmt.Sprintf(":%d", viper.GetInt("server.port"))))
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}
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func (t *Template) Render(w io.Writer, name string, data interface{}, c echo.Context) error {
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return t.templates.ExecuteTemplate(w, name, data)
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}
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// API Handlers
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// handleV1 affiche les routes accessibles.
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// Les routes sont triées selon .Path, pour les rendre plus facilement navigables.
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func handleV1(c echo.Context) error {
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routes := c.Echo().Routes()
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sort.Slice(routes, func(i, j int) bool { return routes[i].Path < routes[j].Path })
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return c.JSON(http.StatusOK, routes)
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}
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// handleV1Seed créé des buckets dans minio selon la liste de buckets dans server.documents.buckets
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// Les buckets sont créés avec paramètres par défaut, et sont ensuite visible dans /v1/bucket.
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func handleV1Seed(c echo.Context) error {
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documents_buckets := viper.GetStringSlice("server.documents.buckets")
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documents_endpoint := viper.GetString("server.documents.endpoint")
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documents_access_key_id := viper.GetString("server.documents.access_key_id")
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documents_secret_access_key := viper.GetString("server.documents.secret_access_key")
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documents_use_ssl := viper.GetBool("server.documents.use_ssl")
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// Initialize minio client object
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client, err := minio.New(documents_endpoint, &minio.Options{
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Creds: credentials.NewStaticV4(documents_access_key_id, documents_secret_access_key, ""),
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Secure: documents_use_ssl,
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})
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if err != nil {
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return c.JSON(http.StatusInternalServerError, map[string]string{
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"message": "Error during minio#New",
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})
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}
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var new_buckets []string
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for _, bucket := range documents_buckets {
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exists, err := client.BucketExists(context.Background(), bucket)
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if err != nil {
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return c.JSON(http.StatusInternalServerError, map[string]string{
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"message": "Error during minio#BucketExists",
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})
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}
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if exists {
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continue
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}
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if err = client.MakeBucket(context.Background(), bucket, minio.MakeBucketOptions{}); err != nil {
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return c.JSON(http.StatusInternalServerError, map[string]string{
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"message": "Error during minio#MakeBucket",
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})
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}
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new_buckets = append(new_buckets, bucket)
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}
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var message string
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if len(new_buckets) == 0 {
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message = "All buckets already exist"
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} else {
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message = "Buckets successfully created"
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}
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return c.JSON(http.StatusOK, map[string]interface{}{
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"message": message,
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"buckets": new_buckets,
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})
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}
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// handleV1BucketList affiche les buckets permis par server.documents.buckets, qui existent.
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func handleV1BucketList(c echo.Context) error {
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documents_buckets := viper.GetStringSlice("server.documents.buckets")
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documents_endpoint := viper.GetString("server.documents.endpoint")
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documents_access_key_id := viper.GetString("server.documents.access_key_id")
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documents_secret_access_key := viper.GetString("server.documents.secret_access_key")
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documents_use_ssl := viper.GetBool("server.documents.use_ssl")
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// Initialize minio client object
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client, err := minio.New(documents_endpoint, &minio.Options{
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Creds: credentials.NewStaticV4(documents_access_key_id, documents_secret_access_key, ""),
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Secure: documents_use_ssl,
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})
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if err != nil {
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return c.JSON(http.StatusInternalServerError, map[string]string{
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"message": "Error during minio#New",
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})
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}
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var buckets []string
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for _, bucket_name := range documents_buckets {
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exists, err := client.BucketExists(context.Background(), bucket_name)
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if err != nil {
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return c.JSON(http.StatusInternalServerError, "Error during minio#BucketExists")
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}
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if exists {
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buckets = append(buckets, bucket_name)
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}
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}
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return c.JSON(http.StatusOK, buckets)
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}
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func handleV1BucketRead(c echo.Context) error {
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documents_endpoint := viper.GetString("server.documents.endpoint")
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documents_access_key_id := viper.GetString("server.documents.access_key_id")
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documents_secret_access_key := viper.GetString("server.documents.secret_access_key")
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documents_use_ssl := viper.GetBool("server.documents.use_ssl")
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bucket := c.Param("bucket")
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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// Initialize minio client object
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client, err := minio.New(documents_endpoint, &minio.Options{
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Creds: credentials.NewStaticV4(documents_access_key_id, documents_secret_access_key, ""),
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Secure: documents_use_ssl,
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})
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if err != nil {
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return c.JSON(http.StatusInternalServerError, map[string]string{
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"message": "Error during minio#New",
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})
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}
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exists, err := client.BucketExists(ctx, bucket)
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if err != nil {
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return c.JSON(http.StatusInternalServerError, "Error during minio#BucketExists")
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}
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if !exists {
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return c.JSON(http.StatusNotFound, map[string]string{"message": "Not Found"})
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}
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var keys []string
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objectCh := client.ListObjects(ctx, bucket, minio.ListObjectsOptions{})
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for object := range objectCh {
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if object.Err != nil {
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return c.JSON(http.StatusInternalServerError, map[string]string{
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"message": "Error during minio#ListObjects",
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})
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}
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keys = append(keys, object.Key)
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}
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return c.JSON(http.StatusOK, keys)
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}
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// HTML Handlers
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func handleIndex(c echo.Context) error {
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return c.Render(http.StatusOK, "index-html", nil)
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}
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func handleAPropos(c echo.Context) error {
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return c.Render(http.StatusOK, "a-propos-html", nil)
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}
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func handleActualite(c echo.Context) error {
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return c.Render(http.StatusOK, "actualite-html", nil)
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}
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func handleActualiteArticle(c echo.Context) error {
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article := c.Param("article")
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return c.String(http.StatusOK, fmt.Sprintf("Article: %s", article))
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}
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func handleVieEtudiante(c echo.Context) error {
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return c.Render(http.StatusOK, "vie-etudiante-html", nil)
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}
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func handleVieEtudianteOrganisme(c echo.Context) error {
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organisme := c.Param("organisme")
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return c.String(http.StatusOK, fmt.Sprintf("Organisme: %s", organisme))
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}
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func handleDocumentation(c echo.Context) error {
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return c.Render(http.StatusOK, "documentation-html", nil)
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}
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func handleFormulaires(c echo.Context) error {
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return c.Render(http.StatusOK, "formulaires-html", nil)
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}
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// CSS Handlers
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func handleStaticCSSIndex(c echo.Context) error {
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// TODO Ajouter gestion d'erreurs
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data, _ := embedFS.ReadFile("css/index.css")
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return c.Blob(http.StatusOK, "text/css", data)
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}
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func handleStaticCSSGeneral(c echo.Context) error {
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// TODO Ajouter gestion d'erreurs
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data, _ := embedFS.ReadFile("css/general.css")
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return c.Blob(http.StatusOK, "text/css", data)
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}
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