156 lines
3.4 KiB
Go
156 lines
3.4 KiB
Go
// Package filemanager provides middleware for managing files in a directory
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// when directory path is requested instead of a specific file. Based on browse
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// middleware.
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package filemanager
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import (
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"crypto/md5"
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"encoding/hex"
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"fmt"
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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/filemanager"
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"github.com/hacdias/fileutils"
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"github.com/mholt/caddy"
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"github.com/mholt/caddy/caddyhttp/httpserver"
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)
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func init() {
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caddy.RegisterPlugin("filemanager", caddy.Plugin{
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ServerType: "http",
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Action: setup,
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})
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}
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type plugin struct {
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Next httpserver.Handler
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Configs []*config
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}
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type config struct {
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*FileManager
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baseURL string
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}
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// ServeHTTP determines if the request is for this plugin, and if all prerequisites are met.
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func (f plugin) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
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for i := range f.Configs {
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// Checks if this Path should be handled by File Manager.
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if !httpserver.Path(r.URL.Path).Matches(f.Configs[i].baseURL) {
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continue
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}
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f.Configs[i].ServeHTTP(w, r)
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return 0, nil
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}
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return f.Next.ServeHTTP(w, r)
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}
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// setup configures a new FileManager middleware instance.
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func setup(c *caddy.Controller) error {
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configs, err := parse(c)
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if err != nil {
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return err
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}
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httpserver.GetConfig(c).AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
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return plugin{Configs: configs, Next: next}
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})
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return nil
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}
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func parse(c *caddy.Controller) ([]*config, error) {
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var (
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configs []*config
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)
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for c.Next() {
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baseURL := "/"
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baseScope := "."
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database := ""
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// Get the baseURL and baseScope
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args := c.RemainingArgs()
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if len(args) >= 1 {
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baseURL = args[0]
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}
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if len(args) > 1 {
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baseScope = args[1]
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}
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for c.NextBlock() {
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switch c.Val() {
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case "database":
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if !c.NextArg() {
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return nil, c.ArgErr()
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}
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database = c.Val()
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}
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}
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caddyConf := httpserver.GetConfig(c)
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path := filepath.Join(caddy.AssetsPath(), "filemanager")
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err := os.MkdirAll(path, 0700)
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if err != nil {
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return nil, err
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}
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// if there is a database path and it is not absolute,
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// it will be relative to Caddy folder.
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if !filepath.IsAbs(database) && database != "" {
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database = filepath.Join(path, database)
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}
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// If there is no database path on the settings,
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// store one in .caddy/filemanager/name.db.
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if database == "" {
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// The name of the database is the hashed value of a string composed
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// by the host, address path and the baseurl of this File Manager
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// instance.
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hasher := md5.New()
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hasher.Write([]byte(caddyConf.Addr.Host + caddyConf.Addr.Path + baseURL))
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sha := hex.EncodeToString(hasher.Sum(nil))
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database = filepath.Join(path, sha+".db")
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fmt.Println("[WARNING] A database is going to be created for your File Manager instace at " + database +
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". It is highly recommended that you set the 'database' option to '" + sha + ".db'\n")
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}
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fm, err := New(database, User{
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AllowCommands: true,
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AllowEdit: true,
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AllowNew: true,
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Commands: []string{"git", "svn", "hg"},
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Rules: []*Rule{{
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Regex: true,
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Allow: false,
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Regexp: &Regexp{Raw: "\\/\\..+"},
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}},
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CSS: "",
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FileSystem: fileutils.Dir(baseScope),
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})
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if err != nil {
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return nil, err
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}
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m := &config{FileManager: fm}
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m.SetBaseURL(baseURL)
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m.SetPrefixURL(strings.TrimSuffix(caddyConf.Addr.Path, "/"))
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m.baseURL = strings.TrimSuffix(baseURL, "/")
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configs = append(configs, m)
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}
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return configs, nil
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}
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