A simple, federated blogging platform. Written in Go. Fork by @gytisrepecka to provide suggestions and fixes to upstream @writeas.
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/*
* Copyright © 2018-2019 A Bunch Tell LLC.
*
* This file is part of WriteFreely.
*
* WriteFreely is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, included
* in the LICENSE file in this source code package.
*/
package writefreely
import (
"database/sql"
"encoding/json"
"net/http"
"github.com/writeas/impart"
"github.com/writeas/web-core/log"
)
func handleWebSignup(app *App, w http.ResponseWriter, r *http.Request) error {
reqJSON := IsJSON(r)
// Get params
var ur userRegistration
if reqJSON {
decoder := json.NewDecoder(r.Body)
err := decoder.Decode(&ur)
if err != nil {
log.Error("Couldn't parse signup JSON request: %v\n", err)
return ErrBadJSON
}
} else {
err := r.ParseForm()
if err != nil {
log.Error("Couldn't parse signup form request: %v\n", err)
return ErrBadFormData
}
err = app.formDecoder.Decode(&ur, r.PostForm)
if err != nil {
log.Error("Couldn't decode signup form request: %v\n", err)
return ErrBadFormData
}
}
ur.Web = true
ur.Normalize = true
to := "/"
if app.cfg.App.SimpleNav {
to = "/new"
}
if ur.InviteCode != "" {
to = "/invite/" + ur.InviteCode
}
_, err := signupWithRegistration(app, ur, w, r)
if err != nil {
if err, ok := err.(impart.HTTPError); ok {
session, _ := app.sessionStore.Get(r, cookieName)
if session != nil {
session.AddFlash(err.Message)
session.Save(r, w)
return impart.HTTPError{http.StatusFound, to}
}
}
return err
}
return impart.HTTPError{http.StatusFound, to}
}
// { "username": "asdf" }
// result: { code: 204 }
func handleUsernameCheck(app *App, w http.ResponseWriter, r *http.Request) error {
reqJSON := IsJSON(r)
// Get params
var d struct {
Username string `json:"username"`
}
if reqJSON {
decoder := json.NewDecoder(r.Body)
err := decoder.Decode(&d)
if err != nil {
log.Error("Couldn't decode username check: %v\n", err)
return ErrBadFormData
}
} else {
return impart.HTTPError{http.StatusNotAcceptable, "Must be JSON request"}
}
// Check if username is okay
finalUsername := getSlug(d.Username, "")
if finalUsername == "" {
errMsg := "Invalid username"
if d.Username != "" {
// Username was provided, but didn't convert into valid latin characters
errMsg += " - must have at least 2 letters or numbers"
}
return impart.HTTPError{http.StatusBadRequest, errMsg + "."}
}
if app.db.PostIDExists(finalUsername) {
return impart.HTTPError{http.StatusConflict, "Username is already taken."}
}
var un string
err := app.db.QueryRow("SELECT username FROM users WHERE username = ?", finalUsername).Scan(&un)
switch {
case err == sql.ErrNoRows:
return impart.WriteSuccess(w, finalUsername, http.StatusOK)
case err != nil:
log.Error("Couldn't SELECT username: %v", err)
return impart.HTTPError{http.StatusInternalServerError, "We messed up."}
}
// Username was found, so it's taken
return impart.HTTPError{http.StatusConflict, "Username is already taken."}
}
func getValidUsername(app *App, reqName, prevName string) (string, *impart.HTTPError) {
// Check if username is okay
finalUsername := getSlug(reqName, "")
if finalUsername == "" {
errMsg := "Invalid username"
if reqName != "" {
// Username was provided, but didn't convert into valid latin characters
errMsg += " - must have at least 2 letters or numbers"
}
return "", &impart.HTTPError{http.StatusBadRequest, errMsg + "."}
}
if finalUsername == prevName {
return "", &impart.HTTPError{http.StatusNotModified, "Username unchanged."}
}
if app.db.PostIDExists(finalUsername) {
return "", &impart.HTTPError{http.StatusConflict, "Username is already taken."}
}
var un string
err := app.db.QueryRow("SELECT username FROM users WHERE username = ?", finalUsername).Scan(&un)
switch {
case err == sql.ErrNoRows:
return finalUsername, nil
case err != nil:
log.Error("Couldn't SELECT username: %v", err)
return "", &impart.HTTPError{http.StatusInternalServerError, "We messed up."}
}
// Username was found, so it's taken
return "", &impart.HTTPError{http.StatusConflict, "Username is already taken."}
}