mirror of
https://github.com/drakkan/sftpgo.git
synced 2024-11-21 23:20:24 +00:00
480 lines
14 KiB
Go
480 lines
14 KiB
Go
package httpd
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import (
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"encoding/json"
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"fmt"
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"html/template"
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"net/http"
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"net/url"
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"os"
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"path"
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"path/filepath"
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"time"
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"github.com/go-chi/render"
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"github.com/rs/xid"
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"github.com/drakkan/sftpgo/common"
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"github.com/drakkan/sftpgo/dataprovider"
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"github.com/drakkan/sftpgo/utils"
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"github.com/drakkan/sftpgo/version"
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"github.com/drakkan/sftpgo/vfs"
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)
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const (
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templateClientDir = "webclient"
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templateClientBase = "base.html"
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templateClientLogin = "login.html"
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templateClientFiles = "files.html"
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templateClientMessage = "message.html"
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templateClientCredentials = "credentials.html"
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pageClientFilesTitle = "My Files"
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pageClientCredentialsTitle = "Credentials"
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)
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// condResult is the result of an HTTP request precondition check.
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// See https://tools.ietf.org/html/rfc7232 section 3.
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type condResult int
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const (
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condNone condResult = iota
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condTrue
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condFalse
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)
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var (
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clientTemplates = make(map[string]*template.Template)
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unixEpochTime = time.Unix(0, 0)
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)
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// isZeroTime reports whether t is obviously unspecified (either zero or Unix()=0).
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func isZeroTime(t time.Time) bool {
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return t.IsZero() || t.Equal(unixEpochTime)
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}
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type baseClientPage struct {
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Title string
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CurrentURL string
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FilesURL string
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CredentialsURL string
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StaticURL string
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LogoutURL string
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FilesTitle string
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CredentialsTitle string
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Version string
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CSRFToken string
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LoggedUser *dataprovider.User
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}
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type dirMapping struct {
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DirName string
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Href string
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}
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type filesPage struct {
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baseClientPage
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CurrentDir string
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ReadDirURL string
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DownloadURL string
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Error string
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Paths []dirMapping
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}
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type clientMessagePage struct {
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baseClientPage
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Error string
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Success string
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}
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type credentialsPage struct {
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baseClientPage
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PublicKeys []string
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ChangePwdURL string
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ManageKeysURL string
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PwdError string
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KeyError string
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}
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func getFileObjectURL(baseDir, name string) string {
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return fmt.Sprintf("%v?path=%v", webClientFilesPath, url.QueryEscape(path.Join(baseDir, name)))
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}
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func getFileObjectModTime(t time.Time) string {
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if isZeroTime(t) {
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return ""
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}
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return t.Format("2006-01-02 15:04")
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}
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func loadClientTemplates(templatesPath string) {
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filesPaths := []string{
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filepath.Join(templatesPath, templateClientDir, templateClientBase),
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filepath.Join(templatesPath, templateClientDir, templateClientFiles),
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}
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credentialsPaths := []string{
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filepath.Join(templatesPath, templateClientDir, templateClientBase),
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filepath.Join(templatesPath, templateClientDir, templateClientCredentials),
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}
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loginPath := []string{
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filepath.Join(templatesPath, templateClientDir, templateClientLogin),
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}
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messagePath := []string{
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filepath.Join(templatesPath, templateClientDir, templateClientBase),
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filepath.Join(templatesPath, templateClientDir, templateClientMessage),
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}
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filesTmpl := utils.LoadTemplate(template.ParseFiles(filesPaths...))
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credentialsTmpl := utils.LoadTemplate(template.ParseFiles(credentialsPaths...))
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loginTmpl := utils.LoadTemplate(template.ParseFiles(loginPath...))
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messageTmpl := utils.LoadTemplate(template.ParseFiles(messagePath...))
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clientTemplates[templateClientFiles] = filesTmpl
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clientTemplates[templateClientCredentials] = credentialsTmpl
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clientTemplates[templateClientLogin] = loginTmpl
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clientTemplates[templateClientMessage] = messageTmpl
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}
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func getBaseClientPageData(title, currentURL string, r *http.Request) baseClientPage {
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var csrfToken string
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if currentURL != "" {
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csrfToken = createCSRFToken()
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}
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v := version.Get()
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return baseClientPage{
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Title: title,
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CurrentURL: currentURL,
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FilesURL: webClientFilesPath,
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CredentialsURL: webClientCredentialsPath,
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StaticURL: webStaticFilesPath,
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LogoutURL: webClientLogoutPath,
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FilesTitle: pageClientFilesTitle,
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CredentialsTitle: pageClientCredentialsTitle,
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Version: fmt.Sprintf("%v-%v", v.Version, v.CommitHash),
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CSRFToken: csrfToken,
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LoggedUser: getUserFromToken(r),
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}
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}
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func renderClientTemplate(w http.ResponseWriter, tmplName string, data interface{}) {
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err := clientTemplates[tmplName].ExecuteTemplate(w, tmplName, data)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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}
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}
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func renderClientLoginPage(w http.ResponseWriter, error string) {
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data := loginPage{
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CurrentURL: webClientLoginPath,
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Version: version.Get().Version,
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Error: error,
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CSRFToken: createCSRFToken(),
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StaticURL: webStaticFilesPath,
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}
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renderClientTemplate(w, templateClientLogin, data)
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}
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func renderClientMessagePage(w http.ResponseWriter, r *http.Request, title, body string, statusCode int, err error, message string) {
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var errorString string
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if body != "" {
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errorString = body + " "
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}
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if err != nil {
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errorString += err.Error()
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}
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data := clientMessagePage{
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baseClientPage: getBaseClientPageData(title, "", r),
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Error: errorString,
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Success: message,
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}
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w.WriteHeader(statusCode)
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renderClientTemplate(w, templateClientMessage, data)
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}
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func renderClientInternalServerErrorPage(w http.ResponseWriter, r *http.Request, err error) {
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renderClientMessagePage(w, r, page500Title, page500Body, http.StatusInternalServerError, err, "")
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}
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func renderClientBadRequestPage(w http.ResponseWriter, r *http.Request, err error) {
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renderClientMessagePage(w, r, page400Title, "", http.StatusBadRequest, err, "")
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}
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func renderClientForbiddenPage(w http.ResponseWriter, r *http.Request, body string) {
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renderClientMessagePage(w, r, page403Title, "", http.StatusForbidden, nil, body)
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}
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func renderClientNotFoundPage(w http.ResponseWriter, r *http.Request, err error) {
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renderClientMessagePage(w, r, page404Title, page404Body, http.StatusNotFound, err, "")
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}
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func renderFilesPage(w http.ResponseWriter, r *http.Request, dirName, error string) {
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data := filesPage{
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baseClientPage: getBaseClientPageData(pageClientFilesTitle, webClientFilesPath, r),
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Error: error,
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CurrentDir: url.QueryEscape(dirName),
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DownloadURL: webClientDownloadZipPath,
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ReadDirURL: webClientDirContentsPath,
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}
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paths := []dirMapping{}
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if dirName != "/" {
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paths = append(paths, dirMapping{
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DirName: path.Base(dirName),
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Href: "",
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})
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for {
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dirName = path.Dir(dirName)
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if dirName == "/" || dirName == "." {
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break
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}
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paths = append([]dirMapping{{
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DirName: path.Base(dirName),
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Href: getFileObjectURL("/", dirName)},
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}, paths...)
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}
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}
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data.Paths = paths
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renderClientTemplate(w, templateClientFiles, data)
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}
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func renderCredentialsPage(w http.ResponseWriter, r *http.Request, pwdError string, keyError string) {
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data := credentialsPage{
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baseClientPage: getBaseClientPageData(pageClientCredentialsTitle, webClientCredentialsPath, r),
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ChangePwdURL: webChangeClientPwdPath,
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ManageKeysURL: webChangeClientKeysPath,
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PwdError: pwdError,
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KeyError: keyError,
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}
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user, err := dataprovider.UserExists(data.LoggedUser.Username)
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if err != nil {
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renderClientInternalServerErrorPage(w, r, err)
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}
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data.PublicKeys = user.PublicKeys
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renderClientTemplate(w, templateClientCredentials, data)
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}
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func handleClientWebLogin(w http.ResponseWriter, r *http.Request) {
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if !dataprovider.HasAdmin() {
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http.Redirect(w, r, webAdminSetupPath, http.StatusFound)
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return
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}
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renderClientLoginPage(w, "")
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}
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func handleWebClientLogout(w http.ResponseWriter, r *http.Request) {
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c := jwtTokenClaims{}
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c.removeCookie(w, r, webBaseClientPath)
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http.Redirect(w, r, webClientLoginPath, http.StatusFound)
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}
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func handleWebClientDownloadZip(w http.ResponseWriter, r *http.Request) {
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claims, err := getTokenClaims(r)
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if err != nil || claims.Username == "" {
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renderClientMessagePage(w, r, "Invalid token claims", "", http.StatusForbidden, nil, "")
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return
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}
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user, err := dataprovider.UserExists(claims.Username)
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if err != nil {
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renderClientMessagePage(w, r, "Unable to retrieve your user", "", getRespStatus(err), nil, "")
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return
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}
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connID := xid.New().String()
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connectionID := fmt.Sprintf("%v_%v", common.ProtocolHTTP, connID)
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if err := checkHTTPClientUser(&user, r, connectionID); err != nil {
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renderClientForbiddenPage(w, r, err.Error())
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return
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}
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connection := &Connection{
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BaseConnection: common.NewBaseConnection(connID, common.ProtocolHTTP, r.RemoteAddr, user),
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request: r,
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}
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common.Connections.Add(connection)
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defer common.Connections.Remove(connection.GetID())
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name := "/"
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if _, ok := r.URL.Query()["path"]; ok {
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name = utils.CleanPath(r.URL.Query().Get("path"))
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}
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files := r.URL.Query().Get("files")
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var filesList []string
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err = json.Unmarshal([]byte(files), &filesList)
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if err != nil {
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renderClientMessagePage(w, r, "Unable to get files list", "", http.StatusInternalServerError, err, "")
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return
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}
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w.Header().Set("Content-Disposition", "attachment; filename=\"sftpgo-download.zip\"")
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renderCompressedFiles(w, connection, name, filesList)
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}
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func handleClientGetDirContents(w http.ResponseWriter, r *http.Request) {
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claims, err := getTokenClaims(r)
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if err != nil || claims.Username == "" {
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sendAPIResponse(w, r, nil, "invalid token claims", http.StatusForbidden)
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return
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}
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user, err := dataprovider.UserExists(claims.Username)
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if err != nil {
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sendAPIResponse(w, r, nil, "Unable to retrieve your user", getRespStatus(err))
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return
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}
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connID := xid.New().String()
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connectionID := fmt.Sprintf("%v_%v", common.ProtocolHTTP, connID)
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if err := checkHTTPClientUser(&user, r, connectionID); err != nil {
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sendAPIResponse(w, r, err, http.StatusText(http.StatusForbidden), http.StatusForbidden)
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return
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}
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connection := &Connection{
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BaseConnection: common.NewBaseConnection(connID, common.ProtocolHTTP, r.RemoteAddr, user),
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request: r,
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}
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common.Connections.Add(connection)
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defer common.Connections.Remove(connection.GetID())
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name := "/"
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if _, ok := r.URL.Query()["path"]; ok {
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name = utils.CleanPath(r.URL.Query().Get("path"))
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}
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contents, err := connection.ReadDir(name)
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if err != nil {
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sendAPIResponse(w, r, err, "Unable to get directory contents", getMappedStatusCode(err))
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return
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}
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results := make([]map[string]string, 0, len(contents))
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for _, info := range contents {
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res := make(map[string]string)
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if info.IsDir() {
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res["type"] = "1"
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res["size"] = ""
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} else {
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res["type"] = "2"
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if info.Mode()&os.ModeSymlink != 0 {
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res["size"] = ""
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} else {
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res["size"] = utils.ByteCountIEC(info.Size())
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}
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}
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res["name"] = info.Name()
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res["last_modified"] = getFileObjectModTime(info.ModTime())
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res["url"] = getFileObjectURL(name, info.Name())
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results = append(results, res)
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}
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render.JSON(w, r, results)
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}
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func handleClientGetFiles(w http.ResponseWriter, r *http.Request) {
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claims, err := getTokenClaims(r)
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if err != nil || claims.Username == "" {
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renderClientForbiddenPage(w, r, "Invalid token claims")
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return
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}
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user, err := dataprovider.UserExists(claims.Username)
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if err != nil {
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renderClientMessagePage(w, r, "Unable to retrieve your user", "", getRespStatus(err), nil, "")
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return
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}
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connID := xid.New().String()
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connectionID := fmt.Sprintf("%v_%v", common.ProtocolHTTP, connID)
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if err := checkHTTPClientUser(&user, r, connectionID); err != nil {
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renderClientForbiddenPage(w, r, err.Error())
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return
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}
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connection := &Connection{
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BaseConnection: common.NewBaseConnection(connID, common.ProtocolHTTP, r.RemoteAddr, user),
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request: r,
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}
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common.Connections.Add(connection)
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defer common.Connections.Remove(connection.GetID())
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name := "/"
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if _, ok := r.URL.Query()["path"]; ok {
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name = utils.CleanPath(r.URL.Query().Get("path"))
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}
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var info os.FileInfo
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if name == "/" {
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info = vfs.NewFileInfo(name, true, 0, time.Now(), false)
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} else {
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info, err = connection.Stat(name, 0)
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}
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if err != nil {
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renderFilesPage(w, r, path.Dir(name), fmt.Sprintf("unable to stat file %#v: %v", name, err))
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return
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}
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if info.IsDir() {
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renderFilesPage(w, r, name, "")
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return
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}
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if status, err := downloadFile(w, r, connection, name, info); err != nil && status != 0 {
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if status > 0 {
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if status == http.StatusRequestedRangeNotSatisfiable {
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renderClientMessagePage(w, r, http.StatusText(status), "", status, err, "")
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return
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}
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renderFilesPage(w, r, path.Dir(name), err.Error())
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}
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}
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}
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func handleClientGetCredentials(w http.ResponseWriter, r *http.Request) {
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renderCredentialsPage(w, r, "", "")
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}
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func handleWebClientChangePwdPost(w http.ResponseWriter, r *http.Request) {
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r.Body = http.MaxBytesReader(w, r.Body, maxRequestSize)
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err := r.ParseForm()
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if err != nil {
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renderCredentialsPage(w, r, err.Error(), "")
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return
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}
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if err := verifyCSRFToken(r.Form.Get(csrfFormToken)); err != nil {
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renderClientForbiddenPage(w, r, err.Error())
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return
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}
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err = doChangeUserPassword(r, r.Form.Get("current_password"), r.Form.Get("new_password1"),
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r.Form.Get("new_password2"))
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if err != nil {
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renderCredentialsPage(w, r, err.Error(), "")
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return
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}
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handleWebClientLogout(w, r)
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}
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func handleWebClientManageKeysPost(w http.ResponseWriter, r *http.Request) {
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r.Body = http.MaxBytesReader(w, r.Body, maxRequestSize)
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err := r.ParseForm()
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if err != nil {
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renderCredentialsPage(w, r, "", err.Error())
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return
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}
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if err := verifyCSRFToken(r.Form.Get(csrfFormToken)); err != nil {
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renderClientForbiddenPage(w, r, err.Error())
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return
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}
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claims, err := getTokenClaims(r)
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if err != nil || claims.Username == "" {
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renderCredentialsPage(w, r, "", "Invalid token claims")
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return
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}
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user, err := dataprovider.UserExists(claims.Username)
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if err != nil {
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renderCredentialsPage(w, r, "", err.Error())
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return
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}
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user.PublicKeys = r.Form["public_keys"]
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err = dataprovider.UpdateUser(&user)
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if err != nil {
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renderCredentialsPage(w, r, "", err.Error())
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return
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}
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renderClientMessagePage(w, r, "Public keys updated", "", http.StatusOK, nil, "Your public keys has been successfully updated")
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}
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