136 lines
		
	
	
		
			3.5 KiB
		
	
	
	
		
			Go
		
	
	
	
			
		
		
	
	
			136 lines
		
	
	
		
			3.5 KiB
		
	
	
	
		
			Go
		
	
	
	
//go:generate go get github.com/jteeuwen/go-bindata
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//go:generate go install github.com/jteeuwen/go-bindata/go-bindata
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//go:generate go-bindata -pkg assets -o assets/assets.go templates/ assets/css/ assets/js/ assets/fonts/
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package hugo
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import (
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	"mime"
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	"net/http"
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	"os"
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	"path/filepath"
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	"strings"
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	"github.com/hacdias/caddy-cms/assets"
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	"github.com/hacdias/caddy-cms/browse"
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	"github.com/hacdias/caddy-cms/config"
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	"github.com/hacdias/caddy-cms/editor"
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	"github.com/hacdias/caddy-cms/utils"
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	"github.com/mholt/caddy/config/setup"
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	"github.com/mholt/caddy/middleware"
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)
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// Setup configures the middleware
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func Setup(c *setup.Controller) (middleware.Middleware, error) {
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	config, _ := config.ParseHugo(c)
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	utils.Run(config)
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	return func(next middleware.Handler) middleware.Handler {
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		return &CaddyHugo{Next: next, Config: config}
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	}, nil
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}
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// CaddyHugo main type
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type CaddyHugo struct {
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	Next   middleware.Handler
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	Config *config.Config
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}
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func (h CaddyHugo) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
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	// Only handle /admin path
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	if middleware.Path(r.URL.Path).Matches("/admin") {
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		var err error
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		var page string
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		code := 404
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		// If the length of the components string is less than one, the variable
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		// page will always be "admin"
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		if len(utils.ParseComponents(r)) > 1 {
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			page = utils.ParseComponents(r)[1]
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		} else {
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			page = utils.ParseComponents(r)[0]
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		}
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		// If the page isn't "assets" neither "edit", it should always put a
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		// trailing slash in the path
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		if page != "assets" && page != "edit" {
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			if r.URL.Path[len(r.URL.Path)-1] != '/' {
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				http.Redirect(w, r, r.URL.Path+"/", http.StatusTemporaryRedirect)
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				return 0, nil
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			}
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		}
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		// If the current page is only "/admin/", redirect to "/admin/browse/content/"
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		if r.URL.Path == "/admin/" {
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			http.Redirect(w, r, "/admin/browse/content/", http.StatusTemporaryRedirect)
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			return 0, nil
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		}
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		// If the url matches exactly with /admin/settings/ serve that page
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		// page variable isn't used here to avoid people using URLs like
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		// "/admin/settings/something".
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		if r.URL.Path == "/admin/settings/" {
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			var frontmatter string
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			if _, err := os.Stat(h.Config.Path + "config.yaml"); err == nil {
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				frontmatter = "yaml"
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			}
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			if _, err := os.Stat(h.Config.Path + "config.json"); err == nil {
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				frontmatter = "json"
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			}
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			if _, err := os.Stat(h.Config.Path + "config.toml"); err == nil {
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				frontmatter = "toml"
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			}
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			http.Redirect(w, r, "/admin/edit/config."+frontmatter, http.StatusTemporaryRedirect)
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			return 0, nil
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		}
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		// Serve the static assets
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		if page == "assets" {
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			return serveAssets(w, r)
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		}
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		// Browse page
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		if page == "browse" {
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			code, err = browse.ServeHTTP(w, r, h.Config)
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		}
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		// Edit page
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		if page == "edit" {
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			code, err = editor.ServeHTTP(w, r, h.Config)
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		}
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		// Whenever the header "X-Refenerate" is true, the website should be
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		// regenerated. Used in edit and settings, for example.
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		if r.Header.Get("X-Regenerate") == "true" {
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			utils.Run(h.Config)
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		}
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		return code, err
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	}
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	return h.Next.ServeHTTP(w, r)
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}
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func serveAssets(w http.ResponseWriter, r *http.Request) (int, error) {
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	filename := strings.Replace(r.URL.Path, "/admin/", "", 1)
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	file, err := assets.Asset(filename)
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	if err != nil {
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		return 404, nil
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	}
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	// Get the file extension ant its mime type
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	extension := filepath.Ext(filename)
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	mime := mime.TypeByExtension(extension)
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	// Write the header with the Content-Type and write the file
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	// content to the buffer
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	w.Header().Set("Content-Type", mime)
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	w.Write(file)
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	return 200, nil
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}
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