move SFTPGo package to the internal folder

SFTPGo is a daemon and command line tool, not a library.

The public API are provided by the SDK

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

internal/httpd/web.go

@@ -0,0 +1,92 @@
+// Copyright (C) 2019-2022  Nicola Murino
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published
+// by the Free Software Foundation, version 3.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package httpd
+
+import (
+	"strings"
+)
+
+const (
+	pageMFATitle              = "Two-factor authentication"
+	page400Title              = "Bad request"
+	page403Title              = "Forbidden"
+	page404Title              = "Not found"
+	page404Body               = "The page you are looking for does not exist."
+	page500Title              = "Internal Server Error"
+	page500Body               = "The server is unable to fulfill your request."
+	webDateTimeFormat         = "2006-01-02 15:04:05" // YYYY-MM-DD HH:MM:SS
+	redactedSecret            = "[**redacted**]"
+	csrfFormToken             = "_form_token"
+	csrfHeaderToken           = "X-CSRF-TOKEN"
+	templateCommonDir         = "common"
+	templateTwoFactor         = "twofactor.html"
+	templateTwoFactorRecovery = "twofactor-recovery.html"
+	templateForgotPassword    = "forgot-password.html"
+	templateResetPassword     = "reset-password.html"
+	templateCommonCSS         = "sftpgo.css"
+)
+
+type loginPage struct {
+	CurrentURL     string
+	Version        string
+	Error          string
+	CSRFToken      string
+	StaticURL      string
+	AltLoginURL    string
+	AltLoginName   string
+	ForgotPwdURL   string
+	OpenIDLoginURL string
+	Branding       UIBranding
+	FormDisabled   bool
+}
+
+type twoFactorPage struct {
+	CurrentURL  string
+	Version     string
+	Error       string
+	CSRFToken   string
+	StaticURL   string
+	RecoveryURL string
+	Branding    UIBranding
+}
+
+type forgotPwdPage struct {
+	CurrentURL string
+	Error      string
+	CSRFToken  string
+	StaticURL  string
+	Title      string
+	Branding   UIBranding
+}
+
+type resetPwdPage struct {
+	CurrentURL string
+	Error      string
+	CSRFToken  string
+	StaticURL  string
+	Title      string
+	Branding   UIBranding
+}
+
+func getSliceFromDelimitedValues(values, delimiter string) []string {
+	result := []string{}
+	for _, v := range strings.Split(values, delimiter) {
+		cleaned := strings.TrimSpace(v)
+		if cleaned != "" {
+			result = append(result, cleaned)
+		}
+	}
+	return result
+}