Merge branch 'devel'

.air.toml

@@ -9,10 +9,11 @@ args_bin = [
     "-key tmp/key.gob",
     "-link https://distrikt-ni-st.de",
     "-log tmp/cpolis.log",
+    "-pdfs tmp/pdfs",
     "-pics tmp/pics",
     "-rss tmp/orientexpress_alle.rss",
     "-title 'Freimaurer Distrikt Niedersachsen und Sachsen-Anhalt'",
-    "-web web"
+    "-web web",
 ]
 bin = "./tmp/main"
 cmd = "go build -o ./tmp/main ./cmd/main.go"

README.md

@@ -1,3 +1,18 @@
 # cpolis
 
-cpolis is an application written in Go to serve as the backend of the Orient Express magazine.
+cpolis is an application written in Go to serve as the backend of the Orient
+Express magazine.
+
+## Installation
+
+You should have the following packages installed:
+
+- Go >= 1.22
+- MariaDB
+
+Enable and start the MariaDB service.
+
+    sudo systemctl enable --now mariadb.service
+
+Set up a dedicated MariaDB user for cpolis.
+

cmd/backend/config.go

@@ -17,6 +17,7 @@ type Config struct {
 	KeyFile     string
 	Link        string
 	LogFile     string
+	PDFDir      string
 	PicsDir     string
 	Port        string
 	RSSFile     string
@@ -29,6 +30,7 @@ func newConfig() *Config {
 		DBName:  "cpolis",
 		KeyFile: "/var/www/cpolis/cpolis.key",
 		LogFile: "/var/log/cpolis.log",
+		PDFDir:  "/var/www/cpolis/pdfs",
 		PicsDir: "/var/www/cpolis/pics",
 		RSSFile: "/var/www/cpolis/cpolis.rss",
 		WebDir:  "/var/www/cpolis/web",
@@ -79,6 +81,7 @@ func (c *Config) handleCliArgs() error {
 	flag.StringVar(&c.KeyFile, "key", c.KeyFile, "key file")
 	flag.StringVar(&c.Link, "link", c.Link, "Channel Link")
 	flag.StringVar(&c.LogFile, "log", c.LogFile, "log file")
+	flag.StringVar(&c.PDFDir, "pdfs", c.PDFDir, "pdf directory")
 	flag.StringVar(&c.PicsDir, "pics", c.PicsDir, "pictures directory")
 	flag.StringVar(&c.RSSFile, "rss", c.RSSFile, "RSS file")
 	flag.StringVar(&c.Title, "title", c.Title, "Channel title")
@@ -96,6 +99,11 @@ func (c *Config) handleCliArgs() error {
 		return fmt.Errorf("error finding absolute path for log file: %v", err)
 	}
 
+	c.PDFDir, err = filepath.Abs(c.PDFDir)
+	if err != nil {
+		return fmt.Errorf("error finding absolute path for pdfs dir: %v", err)
+	}
+
 	c.PicsDir, err = filepath.Abs(c.PicsDir)
 	if err != nil {
 		return fmt.Errorf("error finding absolute path for pics dir: %v", err)

cmd/backend/firebase.go

@@ -0,0 +1,44 @@
+package backend
+
+import (
+	"context"
+
+	firebase "firebase.google.com/go/v4"
+	"firebase.google.com/go/v4/auth"
+	"google.golang.org/api/option"
+)
+
+type Client struct {
+	*auth.Client
+}
+
+func NewClient() (*Client, error) {
+	var err error
+	client := new(Client)
+
+	ctx := context.Background()
+	opt := option.WithCredentialsFile("path/to/serviceAccountKey.json")
+
+	app, err := firebase.NewApp(ctx, nil, opt)
+	if err != nil {
+		return nil, err
+	}
+
+	client.Client, err = app.Auth(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	return client, nil
+}
+
+func (c *Client) Verify(idToken string) (*auth.Token, error) {
+	ctx := context.Background()
+
+	token, err := c.VerifyIDTokenAndCheckRevoked(ctx, idToken)
+	if err != nil {
+		return nil, err
+	}
+
+	return token, nil
+}

cmd/calls/pdf.go

@@ -0,0 +1,44 @@
+package calls
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+
+	b "streifling.com/jason/cpolis/cmd/backend"
+)
+
+func ServePDFList(c *b.Config) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if tokenIsVerified(w, r) {
+			files, err := os.ReadDir(c.PDFDir)
+			if err != nil {
+				log.Println(err)
+				http.Error(w, err.Error(), http.StatusInternalServerError)
+				return
+			}
+
+			fileNames := make([]string, 0)
+			for _, file := range files {
+				fileNames = append(fileNames, file.Name())
+			}
+
+			w.Header().Set("Content-Type", "application/json")
+			if err = json.NewEncoder(w).Encode(fileNames); err != nil {
+				log.Println(err)
+				http.Error(w, err.Error(), http.StatusInternalServerError)
+				return
+			}
+		}
+	}
+}
+
+func ServePDF(c *b.Config) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if tokenIsVerified(w, r) {
+			http.ServeFile(w, r, fmt.Sprint(c.PDFDir, "/", r.PathValue("id")))
+		}
+	}
+}

cmd/calls/rss.go

@@ -0,0 +1,15 @@
+package calls
+
+import (
+	"net/http"
+
+	b "streifling.com/jason/cpolis/cmd/backend"
+)
+
+func ServeRSS(c *b.Config) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if tokenIsVerified(w, r) {
+			http.ServeFile(w, r, c.RSSFile)
+		}
+	}
+}

cmd/calls/verification.go

@@ -0,0 +1,34 @@
+package calls
+
+import (
+	"log"
+	"net/http"
+
+	b "streifling.com/jason/cpolis/cmd/backend"
+)
+
+// tokenIsVerified verifies that a request is authorized. It returns a bool.
+func tokenIsVerified(w http.ResponseWriter, r *http.Request) bool {
+	idToken := r.Header.Get("Authorization")
+	if idToken == "" {
+		log.Println("Authorization header missing")
+		http.Error(w, "Authorization header missing", http.StatusUnauthorized)
+		return false
+	}
+
+	client, err := b.NewClient()
+	if err != nil {
+		log.Println(err)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return false
+	}
+
+	_, err = client.Verify(idToken)
+	if err != nil {
+		log.Println(err)
+		http.Error(w, err.Error(), http.StatusUnauthorized)
+		return false
+	}
+
+	return true
+}

cmd/frontend/articles.go

@@ -23,29 +23,13 @@ const (
 	PreviewMode
 )
 
-func ShowHub(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
+func WriteArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		session, err := s.Get(r, "cookie")
+		session, err := getSession(w, r, c, s)
 		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
-		}
-
-		session.Values["article"] = nil
-		if err = session.Save(r, w); err != nil {
-			log.Println(err)
-			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
 		}
 
-		tmpl, err := template.ParseFiles(c.WebDir + "/templates/hub.html")
-		template.Must(tmpl, err).ExecuteTemplate(w, "page-content", session.Values["role"].(int))
-	}
-}
-
-func WriteArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
 		type editorHTMLData struct {
 			Title       string
 			Description string
@@ -55,13 +39,6 @@ func WriteArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 			Mode        int
 		}
 
-		session, err := s.Get(r, "cookie")
-		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
-		}
-
 		var data editorHTMLData
 		if session.Values["article"] == nil {
 			data = editorHTMLData{}
@@ -84,11 +61,9 @@ func WriteArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 
 func SubmitArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		session, err := s.Get(r, "cookie")
+		session, err := getSession(w, r, c, s)
 		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
+			return
 		}
 
 		session.Values["article"] = nil
@@ -139,6 +114,11 @@ func SubmitArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 
 func ResubmitArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		session, err := getSession(w, r, c, s)
+		if err != nil {
+			return
+		}
+
 		id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
 		if err != nil {
 			log.Println(err)
@@ -178,21 +158,18 @@ func ResubmitArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 			return
 		}
 
-		session, err := s.Get(r, "cookie")
-		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
-		}
-
 		tmpl, err := template.ParseFiles(c.WebDir + "/templates/hub.html")
 		tmpl = template.Must(tmpl, err)
 		tmpl.ExecuteTemplate(w, "page-content", session.Values["role"])
 	}
 }
 
-func ShowUnpublishedArticles(c *b.Config, db *b.DB) http.HandlerFunc {
+func ShowUnpublishedArticles(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		if _, err := getSession(w, r, c, s); err != nil {
+			return
+		}
+
 		unpublishedArticles, err := db.GetCertainArticles(false, false)
 		if err != nil {
 			log.Println(err)
@@ -208,19 +185,17 @@ func ShowUnpublishedArticles(c *b.Config, db *b.DB) http.HandlerFunc {
 
 func ShowRejectedArticles(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		session, err := getSession(w, r, c, s)
+		if err != nil {
+			return
+		}
+
 		type htmlData struct {
 			MyIDs            map[int64]bool
 			RejectedArticles []*b.Article
 		}
 		data := new(htmlData)
 
-		session, err := s.Get(r, "cookie")
-		if err != nil {
-			log.Println(err)
-			http.Error(w, err.Error(), http.StatusInternalServerError)
-			return
-		}
-
 		data.RejectedArticles, err = db.GetCertainArticles(false, true)
 		if err != nil {
 			log.Println(err)
@@ -243,6 +218,10 @@ func ShowRejectedArticles(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerF
 
 func ReviewUnpublishedArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		if _, err := getSession(w, r, c, s); err != nil {
+			return
+		}
+
 		type htmlData struct {
 			Title       string
 			Description string
@@ -305,6 +284,10 @@ func ReviewUnpublishedArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.Hand
 
 func ReviewRejectedArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		if _, err := getSession(w, r, c, s); err != nil {
+			return
+		}
+
 		type htmlData struct {
 			Selected map[int64]bool
 			Article  *b.Article
@@ -352,6 +335,11 @@ func ReviewRejectedArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.Handler
 
 func PublishArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		session, err := getSession(w, r, c, s)
+		if err != nil {
+			return
+		}
+
 		id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
 		if err != nil {
 			log.Println(err)
@@ -359,13 +347,6 @@ func PublishArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 			return
 		}
 
-		session, err := s.Get(r, "cookie")
-		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
-		}
-
 		if err = db.AddArticleToCurrentIssue(id); err != nil {
 			log.Println(err)
 			http.Error(w, err.Error(), http.StatusInternalServerError)
@@ -402,6 +383,11 @@ func PublishArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 
 func RejectArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		session, err := getSession(w, r, c, s)
+		if err != nil {
+			return
+		}
+
 		id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
 		if err != nil {
 			log.Println(err)
@@ -409,13 +395,6 @@ func RejectArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 			return
 		}
 
-		session, err := s.Get(r, "cookie")
-		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
-		}
-
 		if err = db.UpdateAttributes(
 			&b.Attribute{Table: "articles", ID: id, AttName: "rejected", Value: true},
 		); err != nil {
@@ -430,8 +409,12 @@ func RejectArticle(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	}
 }
 
-func ShowCurrentArticles(c *b.Config, db *b.DB) http.HandlerFunc {
+func ShowCurrentArticles(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		if _, err := getSession(w, r, c, s); err != nil {
+			return
+		}
+
 		articles, err := db.GetCurrentIssueArticles()
 		if err != nil {
 			log.Println(err)
@@ -444,8 +427,12 @@ func ShowCurrentArticles(c *b.Config, db *b.DB) http.HandlerFunc {
 	}
 }
 
-func UploadImage(c *b.Config) http.HandlerFunc {
+func UploadImage(c *b.Config, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		if _, err := getSession(w, r, c, s); err != nil {
+			return
+		}
+
 		file, header, err := r.FormFile("article-image")
 		if err != nil {
 			log.Println(err)

cmd/frontend/editor.go

@@ -7,8 +7,12 @@ import (
 	b "streifling.com/jason/cpolis/cmd/backend"
 )
 
-func CreateTag(c *b.Config) http.HandlerFunc {
+func CreateTag(c *b.Config, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		if _, err := getSession(w, r, c, s); err != nil {
+			return
+		}
+
 		tmpl, err := template.ParseFiles(c.WebDir + "/templates/add-tag.html")
 		template.Must(tmpl, err).ExecuteTemplate(w, "page-content", nil)
 	}
@@ -16,15 +20,13 @@ func CreateTag(c *b.Config) http.HandlerFunc {
 
 func AddTag(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		db.AddTag(r.PostFormValue("tag"))
-
-		session, err := s.Get(r, "cookie")
+		session, err := getSession(w, r, c, s)
 		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
+			return
 		}
 
+		db.AddTag(r.PostFormValue("tag"))
+
 		tmpl, err := template.ParseFiles(c.WebDir + "/templates/hub.html")
 		tmpl = template.Must(tmpl, err)
 		tmpl.ExecuteTemplate(w, "page-content", session.Values["role"])

cmd/frontend/images.go

@@ -10,6 +10,10 @@ import (
 
 func ServeImage(c *b.Config, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		if _, err := getSession(w, r, c, s); err != nil {
+			return
+		}
+
 		absFilepath, err := filepath.Abs(c.PicsDir)
 		if err != nil {
 			log.Println(err)

cmd/frontend/issues.go

@@ -10,19 +10,17 @@ import (
 
 func PublishLatestIssue(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		session, err := getSession(w, r, c, s)
+		if err != nil {
+			return
+		}
+
 		if err := db.PublishLatestIssue(); err != nil {
 			log.Println(err)
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
 		}
 
-		session, err := s.Get(r, "cookie")
-		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
-		}
-
 		tmpl, err := template.ParseFiles(c.WebDir + "/templates/hub.html")
 		tmpl = template.Must(tmpl, err)
 		tmpl.ExecuteTemplate(w, "page-content", session.Values["role"])

cmd/frontend/sessions.go

@@ -90,11 +90,9 @@ func Login(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 
 func Logout(c *b.Config, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		session, err := s.Get(r, "cookie")
+		session, err := getSession(w, r, c, s)
 		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
+			return
 		}
 
 		session.Options.MaxAge = -1
@@ -109,3 +107,22 @@ func Logout(c *b.Config, s *b.CookieStore) http.HandlerFunc {
 		template.Must(tmpl, err).ExecuteTemplate(w, "page-content", nil)
 	}
 }
+
+func ShowHub(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		session, err := getSession(w, r, c, s)
+		if err != nil {
+			return
+		}
+
+		session.Values["article"] = nil
+		if err = session.Save(r, w); err != nil {
+			log.Println(err)
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		tmpl, err := template.ParseFiles(c.WebDir + "/templates/hub.html")
+		template.Must(tmpl, err).ExecuteTemplate(w, "page-content", session.Values["role"].(int))
+	}
+}

cmd/frontend/users.go

@@ -30,8 +30,12 @@ func checkUserStrings(user *b.User) (string, int, bool) {
 	}
 }
 
-func CreateUser(c *b.Config) http.HandlerFunc {
+func CreateUser(c *b.Config, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		if _, err := getSession(w, r, c, s); err != nil {
+			return
+		}
+
 		tmpl, err := template.ParseFiles(c.WebDir + "/templates/add-user.html")
 		template.Must(tmpl, err).ExecuteTemplate(w, "page-content", nil)
 	}
@@ -39,6 +43,11 @@ func CreateUser(c *b.Config) http.HandlerFunc {
 
 func AddUser(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		session, err := getSession(w, r, c, s)
+		if err != nil {
+			return
+		}
+
 		role, err := strconv.Atoi(r.PostFormValue("role"))
 		if err != nil {
 			log.Println(err)
@@ -94,13 +103,6 @@ func AddUser(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 			return
 		}
 
-		session, err := s.Get(r, "cookie")
-		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
-		}
-
 		tmpl, err := template.ParseFiles(c.WebDir + "/templates/hub.html")
 		tmpl = template.Must(tmpl, err)
 		tmpl.ExecuteTemplate(w, "page-content", session.Values["role"].(int))
@@ -109,11 +111,9 @@ func AddUser(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 
 func EditSelf(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		session, err := s.Get(r, "cookie")
+		session, err := getSession(w, r, c, s)
 		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
+			return
 		}
 
 		user, err := db.GetUser(session.Values["id"].(int64))
@@ -130,11 +130,9 @@ func EditSelf(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 
 func UpdateSelf(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		session, err := s.Get(r, "cookie")
+		session, err := getSession(w, r, c, s)
 		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
+			return
 		}
 
 		userData := UserData{
@@ -200,8 +198,11 @@ func UpdateSelf(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 
 func AddFirstUser(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		var err error
+		if _, err := getSession(w, r, c, s); err != nil {
+			return
+		}
 
+		var err error
 		htmlData := UserData{
 			User: &b.User{
 				UserName:  r.PostFormValue("username"),
@@ -275,7 +276,11 @@ func AddFirstUser(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 
 func ShowAllUsers(c *b.Config, db *b.DB, s *b.CookieStore, action string) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		var err error
+		session, err := getSession(w, r, c, s)
+		if err != nil {
+			return
+		}
+
 		type htmlData struct {
 			Users  map[int64]*b.User
 			Action string
@@ -289,21 +294,18 @@ func ShowAllUsers(c *b.Config, db *b.DB, s *b.CookieStore, action string) http.H
 			return
 		}
 
-		session, err := s.Get(r, "cookie")
-		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
-		}
-
 		delete(data.Users, session.Values["id"].(int64))
 		tmpl, err := template.ParseFiles(c.WebDir + "/templates/show-all-users.html")
 		template.Must(tmpl, err).ExecuteTemplate(w, "page-content", data)
 	}
 }
 
-func EditUser(c *b.Config, db *b.DB) http.HandlerFunc {
+func EditUser(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		if _, err := getSession(w, r, c, s); err != nil {
+			return
+		}
+
 		id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
 		if err != nil {
 			log.Println(err)
@@ -325,6 +327,11 @@ func EditUser(c *b.Config, db *b.DB) http.HandlerFunc {
 
 func UpdateUser(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		session, err := getSession(w, r, c, s)
+		if err != nil {
+			return
+		}
+
 		id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
 		if err != nil {
 			log.Println(err)
@@ -394,13 +401,6 @@ func UpdateUser(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", userData)
 		}
 
-		session, err := s.Get(r, "cookie")
-		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
-		}
-
 		tmpl, err := template.ParseFiles(c.WebDir + "/templates/hub.html")
 		tmpl = template.Must(tmpl, err)
 		tmpl.ExecuteTemplate(w, "page-content", session.Values["role"].(int))
@@ -409,6 +409,11 @@ func UpdateUser(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 
 func DeleteUser(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		session, err := getSession(w, r, c, s)
+		if err != nil {
+			return
+		}
+
 		id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
 		if err != nil {
 			log.Println(err)
@@ -422,13 +427,6 @@ func DeleteUser(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFunc {
 			return
 		}
 
-		session, err := s.Get(r, "cookie")
-		if err != nil {
-			tmpl, err := template.ParseFiles(c.WebDir + "/templates/login.html")
-			msg := "Session nicht mehr gültig. Bitte erneut anmelden."
-			template.Must(tmpl, err).ExecuteTemplate(w, "page-content", msg)
-		}
-
 		tmpl, err := template.ParseFiles(c.WebDir + "/templates/hub.html")
 		tmpl = template.Must(tmpl, err)
 		tmpl.ExecuteTemplate(w, "page-content", session.Values["role"].(int))

cmd/frontend/verification.go

@@ -0,0 +1,29 @@
+package frontend
+
+import (
+	"errors"
+	"html/template"
+	"net/http"
+
+	"github.com/gorilla/sessions"
+	b "streifling.com/jason/cpolis/cmd/backend"
+)
+
+// getSession is used for verifying that the user is logged in and returns their session and an error.
+func getSession(w http.ResponseWriter, r *http.Request, c *b.Config, s *b.CookieStore) (*sessions.Session, error) {
+	msg := "Keine gültige Session. Bitte erneut anmelden."
+	tmpl, tmplErr := template.ParseFiles(c.WebDir+"/templates/index.html", c.WebDir+"/templates/login.html")
+
+	session, err := s.Get(r, "cookie")
+	if err != nil {
+		template.Must(tmpl, tmplErr).ExecuteTemplate(w, "page-content", msg)
+		return nil, err
+	}
+
+	if session.IsNew {
+		template.Must(tmpl, tmplErr).ExecuteTemplate(w, "page-content", msg)
+		return session, errors.New("error: no existing session")
+	}
+
+	return session, nil
+}

cmd/main.go

@@ -7,6 +7,7 @@ import (
 	"os"
 
 	b "streifling.com/jason/cpolis/cmd/backend"
+	c "streifling.com/jason/cpolis/cmd/calls"
 	f "streifling.com/jason/cpolis/cmd/frontend"
 )
 
@@ -48,13 +49,15 @@ func main() {
 		http.FileServer(http.Dir(config.WebDir+"/static/"))))
 	mux.HandleFunc("/", f.HomePage(config, db, store))
 
-	mux.HandleFunc("GET /create-tag", f.CreateTag(config))
-	mux.HandleFunc("GET /create-user", f.CreateUser(config))
+	mux.HandleFunc("GET /create-tag", f.CreateTag(config, store))
+	mux.HandleFunc("GET /create-user", f.CreateUser(config, store))
 	mux.HandleFunc("GET /edit-self", f.EditSelf(config, db, store))
-	mux.HandleFunc("GET /edit-user/{id}", f.EditUser(config, db))
+	mux.HandleFunc("GET /edit-user/{id}", f.EditUser(config, db, store))
 	mux.HandleFunc("GET /delete-user/{id}", f.DeleteUser(config, db, store))
 	mux.HandleFunc("GET /hub", f.ShowHub(config, db, store))
 	mux.HandleFunc("GET /logout", f.Logout(config, store))
+	mux.HandleFunc("GET /pdf/get-list", c.ServePDFList(config))
+	mux.HandleFunc("GET /pdf/{id}", c.ServePDF(config))
 	mux.HandleFunc("GET /pics/{pic}", f.ServeImage(config, store))
 	mux.HandleFunc("GET /publish-article/{id}", f.PublishArticle(config, db, store))
 	mux.HandleFunc("GET /publish-issue", f.PublishLatestIssue(config, db, store))
@@ -62,11 +65,11 @@ func main() {
 	mux.HandleFunc("GET /rejected-articles", f.ShowRejectedArticles(config, db, store))
 	mux.HandleFunc("GET /review-rejected-article/{id}", f.ReviewRejectedArticle(config, db, store))
 	mux.HandleFunc("GET /review-unpublished-article/{id}", f.ReviewUnpublishedArticle(config, db, store))
-	mux.HandleFunc("GET /rss", func(w http.ResponseWriter, r *http.Request) { http.ServeFile(w, r, config.RSSFile) })
+	mux.HandleFunc("GET /rss", c.ServeRSS(config))
 	mux.HandleFunc("GET /show-all-users-edit", f.ShowAllUsers(config, db, store, "edit-user"))
 	mux.HandleFunc("GET /show-all-users-delete", f.ShowAllUsers(config, db, store, "delete-user"))
-	mux.HandleFunc("GET /this-issue", f.ShowCurrentArticles(config, db))
-	mux.HandleFunc("GET /unpublished-articles", f.ShowUnpublishedArticles(config, db))
+	mux.HandleFunc("GET /this-issue", f.ShowCurrentArticles(config, db, store))
+	mux.HandleFunc("GET /unpublished-articles", f.ShowUnpublishedArticles(config, db, store))
 	mux.HandleFunc("GET /write-article", f.WriteArticle(config, db, store))
 
 	mux.HandleFunc("POST /add-first-user", f.AddFirstUser(config, db, store))
@@ -77,7 +80,7 @@ func main() {
 	mux.HandleFunc("POST /submit-article", f.SubmitArticle(config, db, store))
 	mux.HandleFunc("POST /update-self", f.UpdateSelf(config, db, store))
 	mux.HandleFunc("POST /update-user/{id}", f.UpdateUser(config, db, store))
-	mux.HandleFunc("POST /upload-image", f.UploadImage(config))
+	mux.HandleFunc("POST /upload-image", f.UploadImage(config, store))
 
 	log.Fatalln(http.ListenAndServe(config.Port, mux))
 }

cpolis.service

@@ -0,0 +1,9 @@
+[Unit]
+Description=cpolis
+
+[Service]
+ExecStart=/usr/local/bin/cpolis
+Restart=on-failure
+
+[Install]
+WantedBy=default.target

go.mod

@@ -3,6 +3,7 @@ module streifling.com/jason/cpolis
 go 1.22.0
 
 require (
+	firebase.google.com/go/v4 v4.14.1
 	git.streifling.com/jason/rss v0.1.2
 	github.com/BurntSushi/toml v1.3.2
 	github.com/go-sql-driver/mysql v1.7.1
@@ -10,14 +11,49 @@ require (
 	github.com/gorilla/sessions v1.2.2
 	github.com/microcosm-cc/bluemonday v1.0.26
 	github.com/yuin/goldmark v1.7.0
-	golang.org/x/crypto v0.14.0
-	golang.org/x/term v0.17.0
+	golang.org/x/crypto v0.21.0
+	golang.org/x/term v0.18.0
+	google.golang.org/api v0.170.0
 )
 
 require (
+	cloud.google.com/go v0.112.1 // indirect
+	cloud.google.com/go/compute v1.24.0 // indirect
+	cloud.google.com/go/compute/metadata v0.2.3 // indirect
+	cloud.google.com/go/firestore v1.15.0 // indirect
+	cloud.google.com/go/iam v1.1.7 // indirect
+	cloud.google.com/go/longrunning v0.5.5 // indirect
+	cloud.google.com/go/storage v1.40.0 // indirect
+	github.com/MicahParks/keyfunc v1.9.0 // indirect
 	github.com/aymerick/douceur v0.2.0 // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
+	github.com/go-logr/logr v1.4.1 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/golang-jwt/jwt/v4 v4.5.0 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/google/s2a-go v0.1.7 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.2 // indirect
+	github.com/googleapis/gax-go/v2 v2.12.3 // indirect
 	github.com/gorilla/css v1.0.0 // indirect
 	github.com/gorilla/securecookie v1.1.2 // indirect
-	golang.org/x/net v0.17.0 // indirect
-	golang.org/x/sys v0.17.0 // indirect
+	go.opencensus.io v0.24.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.49.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.49.0 // indirect
+	go.opentelemetry.io/otel v1.24.0 // indirect
+	go.opentelemetry.io/otel/metric v1.24.0 // indirect
+	go.opentelemetry.io/otel/trace v1.24.0 // indirect
+	golang.org/x/net v0.23.0 // indirect
+	golang.org/x/oauth2 v0.18.0 // indirect
+	golang.org/x/sync v0.6.0 // indirect
+	golang.org/x/sys v0.18.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/time v0.5.0 // indirect
+	google.golang.org/appengine v1.6.8 // indirect
+	google.golang.org/appengine/v2 v2.0.2 // indirect
+	google.golang.org/genproto v0.0.0-20240213162025-012b6fc9bca9 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240314234333-6e1732d8331c // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240311132316-a219d84964c2 // indirect
+	google.golang.org/grpc v1.62.1 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
 )

go.sum

@@ -1,15 +1,92 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.112.1 h1:uJSeirPke5UNZHIb4SxfZklVSiWWVqW4oXlETwZziwM=
+cloud.google.com/go v0.112.1/go.mod h1:+Vbu+Y1UU+I1rjmzeMOb/8RfkKJK2Gyxi1X6jJCZLo4=
+cloud.google.com/go/compute v1.24.0 h1:phWcR2eWzRJaL/kOiJwfFsPs4BaKq1j6vnpZrc1YlVg=
+cloud.google.com/go/compute v1.24.0/go.mod h1:kw1/T+h/+tK2LJK0wiPPx1intgdAM3j/g3hFDlscY40=
+cloud.google.com/go/compute/metadata v0.2.3 h1:mg4jlk7mCAj6xXp9UJ4fjI9VUI5rubuGBW5aJ7UnBMY=
+cloud.google.com/go/compute/metadata v0.2.3/go.mod h1:VAV5nSsACxMJvgaAuX6Pk2AawlZn8kiOGuCv6gTkwuA=
+cloud.google.com/go/firestore v1.15.0 h1:/k8ppuWOtNuDHt2tsRV42yI21uaGnKDEQnRFeBpbFF8=
+cloud.google.com/go/firestore v1.15.0/go.mod h1:GWOxFXcv8GZUtYpWHw/w6IuYNux/BtmeVTMmjrm4yhk=
+cloud.google.com/go/iam v1.1.7 h1:z4VHOhwKLF/+UYXAJDFwGtNF0b6gjsW1Pk9Ml0U/IoM=
+cloud.google.com/go/iam v1.1.7/go.mod h1:J4PMPg8TtyurAUvSmPj8FF3EDgY1SPRZxcUGrn7WXGA=
+cloud.google.com/go/longrunning v0.5.5 h1:GOE6pZFdSrTb4KAiKnXsJBtlE6mEyaW44oKyMILWnOg=
+cloud.google.com/go/longrunning v0.5.5/go.mod h1:WV2LAxD8/rg5Z1cNW6FJ/ZpX4E4VnDnoTk0yawPBB7s=
+cloud.google.com/go/storage v1.40.0 h1:VEpDQV5CJxFmJ6ueWNsKxcr1QAYOXEgxDa+sBbJahPw=
+cloud.google.com/go/storage v1.40.0/go.mod h1:Rrj7/hKlG87BLqDJYtwR0fbPld8uJPbQ2ucUMY7Ir0g=
+firebase.google.com/go/v4 v4.14.1 h1:4qiUETaFRWoFGE1XP5VbcEdtPX93Qs+8B/7KvP2825g=
+firebase.google.com/go/v4 v4.14.1/go.mod h1:fgk2XshgNDEKaioKco+AouiegSI9oTWVqRaBdTTGBoM=
 git.streifling.com/jason/rss v0.1.2 h1:UB3UHJXMt5WDDh9y8n0Z6nS1XortbPXjEr7QZTdovY4=
 git.streifling.com/jason/rss v0.1.2/go.mod h1:gpZF0nZbQSstMpyHD9DTAvlQEG7v4pjO5c7aIMWM4Jg=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
 github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
+github.com/MicahParks/keyfunc v1.9.0 h1:lhKd5xrFHLNOWrDc4Tyb/Q1AJ4LCzQ48GVJyVIID3+o=
+github.com/MicahParks/keyfunc v1.9.0/go.mod h1:IdnCilugA0O/99dW+/MkvlyrsX8+L8+x95xuVNtM5jw=
 github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuPk=
 github.com/aymerick/douceur v0.2.0/go.mod h1:wlT5vV2O3h55X9m7iVYN0TBM0NH/MmbLnd30/FjWUq4=
+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
+github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
+github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
+github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
+github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ=
+github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
+github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
+github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
 github.com/go-sql-driver/mysql v1.7.1 h1:lUIinVbN1DY0xBg0eMOzmmtGoHwWBbvnWubQUrtU8EI=
 github.com/go-sql-driver/mysql v1.7.1/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
+github.com/golang-jwt/jwt/v4 v4.4.2/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
+github.com/golang-jwt/jwt/v4 v4.5.0 h1:7cYmW1XlMY7h7ii7UhUyChSgS5wUJEnm9uZVTGqOWzg=
+github.com/golang-jwt/jwt/v4 v4.5.0/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
+github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE=
+github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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update.sh

@@ -0,0 +1,55 @@
+#! /bin/sh -
+
+CPOLIS_REPO_URL="https://git.streifling.com/api/v1/repos/jason/cpolis/releases"
+EXTRACTION_DIR=$HOME
+CPOLIS_DIR=$EXTRACTION_DIR/cpolis
+TAILWINDCSS_REPO_URL=https://api.github.com/repos/tailwindlabs/tailwindcss/releases/latest
+TMP_DIR=/tmp
+BIN_DIR=/usr/local/bin
+
+check_dependency() {
+    if ! which $1 >/dev/null 2>&1; then
+        echo "$1 needs to be installed" >&2
+        exit 1
+    fi
+}
+
+if ! groups | grep -E 'root|wheel|sudo' >/dev/null; then
+    echo "You need administrative privileges for this script" >&2
+    exit 1
+fi
+
+check_dependency curl
+check_dependency go
+check_dependency jq
+check_dependency tar
+check_dependency xargs
+
+echo -e '\nDownloading cpolis...' >&2
+rm -fr $CPOLIS_DIR/*
+latest_release=$(curl -s $CPOLIS_REPO_URL | jq -r '.[0].tag_name')
+curl -Lo $TMP_DIR/cpolis.tar.gz https://git.streifling.com/jason/cpolis/archive/$latest_release.tar.gz
+tar -xzf $TMP_DIR/cpolis.tar.gz -C $EXTRACTION_DIR
+rm $TMP_DIR/cpolis.tar.gz
+
+echo -e '\nDownloading TailwindCSS...' >&2
+curl -s $TAILWINDCSS_REPO_URL |
+    grep -F browser_download_url |
+    grep -F linux-x64 |
+    cut -d'"' -f4 |
+    xargs -r curl -Lo $CPOLIS_DIR/tailwindcss
+chmod +x $CPOLIS_DIR/tailwindcss
+$CPOLIS_DIR/tailwindcss -i web/static/css/input.css -o web/static/css/style.css
+
+echo -e 'Building cpolis...' >&2
+go build -o $TMP_DIR/cpolis $CPOLIS_DIR/cmd/main.go
+
+echo -e 'Setting system files up...' >&2
+sudo mv $TMP_DIR/cpolis $BIN_DIR/cpolis
+sudo chown root:root $BIN_DIR/cpolis
+chmod +x $BIN_DIR/cpolis
+
+sudo mv $CPOLIS_DIR/cpolis.service $SYSTEMD_DIR
+sudo chown root:root $SYSTEMD_DIR/cpolis.service
+sudo systemctl daemon-reload
+sudo systemctl is-active --quiet cpolis.service && sudo systemctl restart cpolis.service