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diff --git a/oauth_signup.go b/oauth_signup.go
index 53ad5c4..cf90af6 100644
--- a/oauth_signup.go
+++ b/oauth_signup.go
@@ -1,209 +1,206 @@
package writefreely
import (
"crypto/sha256"
"encoding/hex"
"fmt"
"github.com/writeas/impart"
"github.com/writeas/web-core/auth"
"github.com/writeas/web-core/log"
"github.com/writeas/writefreely/page"
"html/template"
"net/http"
"strings"
"time"
)
type viewOauthSignupVars struct {
page.StaticPage
To string
Message template.HTML
Flashes []template.HTML
AccessToken string
TokenUsername string
TokenAlias string
TokenEmail string
TokenRemoteUser string
Provider string
ClientID string
TokenHash string
Username string
Alias string
Email string
}
const (
oauthParamAccessToken = "access_token"
oauthParamTokenUsername = "token_username"
oauthParamTokenAlias = "token_alias"
oauthParamTokenEmail = "token_email"
oauthParamTokenRemoteUserID = "token_remote_user"
oauthParamClientID = "client_id"
oauthParamProvider = "provider"
oauthParamHash = "signature"
oauthParamUsername = "username"
oauthParamAlias = "alias"
oauthParamEmail = "email"
oauthParamPassword = "password"
)
type oauthSignupPageParams struct {
AccessToken string
TokenUsername string
TokenAlias string
TokenEmail string
TokenRemoteUser string
ClientID string
Provider string
TokenHash string
}
func (p oauthSignupPageParams) HashTokenParams(key string) string {
hasher := sha256.New()
hasher.Write([]byte(key))
hasher.Write([]byte(p.AccessToken))
hasher.Write([]byte(p.TokenUsername))
hasher.Write([]byte(p.TokenAlias))
hasher.Write([]byte(p.TokenEmail))
hasher.Write([]byte(p.TokenRemoteUser))
hasher.Write([]byte(p.ClientID))
hasher.Write([]byte(p.Provider))
return hex.EncodeToString(hasher.Sum(nil))
}
func (h oauthHandler) viewOauthSignup(app *App, w http.ResponseWriter, r *http.Request) error {
tp := &oauthSignupPageParams{
AccessToken: r.FormValue(oauthParamAccessToken),
TokenUsername: r.FormValue(oauthParamTokenUsername),
TokenAlias: r.FormValue(oauthParamTokenAlias),
TokenEmail: r.FormValue(oauthParamTokenEmail),
TokenRemoteUser: r.FormValue(oauthParamTokenRemoteUserID),
ClientID: r.FormValue(oauthParamClientID),
Provider: r.FormValue(oauthParamProvider),
}
if tp.HashTokenParams(h.Config.Server.HashSeed) != r.FormValue(oauthParamHash) {
return impart.HTTPError{Status: http.StatusBadRequest, Message: "Request has been tampered with."}
}
tp.TokenHash = tp.HashTokenParams(h.Config.Server.HashSeed)
if err := h.validateOauthSignup(r); err != nil {
return h.showOauthSignupPage(app, w, r, tp, err)
}
hashedPass, err := auth.HashPass([]byte(r.FormValue(oauthParamPassword)))
if err != nil {
return h.showOauthSignupPage(app, w, r, tp, fmt.Errorf("unable to hash password"))
}
newUser := &User{
Username: r.FormValue(oauthParamUsername),
HashedPass: hashedPass,
HasPass: true,
Email: prepareUserEmail(r.FormValue(oauthParamEmail), h.EmailKey),
Created: time.Now().Truncate(time.Second).UTC(),
}
displayName := r.FormValue(oauthParamAlias)
if len(displayName) == 0 {
displayName = r.FormValue(oauthParamUsername)
}
err = h.DB.CreateUser(h.Config, newUser, displayName)
if err != nil {
return h.showOauthSignupPage(app, w, r, tp, err)
}
err = h.DB.RecordRemoteUserID(r.Context(), newUser.ID, r.FormValue(oauthParamTokenRemoteUserID), r.FormValue(oauthParamProvider), r.FormValue(oauthParamClientID), r.FormValue(oauthParamAccessToken))
if err != nil {
return h.showOauthSignupPage(app, w, r, tp, err)
}
if err := loginOrFail(h.Store, w, r, newUser); err != nil {
return h.showOauthSignupPage(app, w, r, tp, err)
}
return nil
}
func (h oauthHandler) validateOauthSignup(r *http.Request) error {
username := r.FormValue(oauthParamUsername)
- if len(username) < 5 {
+ if len(username) < h.Config.App.MinUsernameLen {
return impart.HTTPError{Status: http.StatusBadRequest, Message: "Username is too short."}
}
- if len(username) > 20 {
+ if len(username) > 100 {
return impart.HTTPError{Status: http.StatusBadRequest, Message: "Username is too long."}
}
alias := r.FormValue(oauthParamAlias)
- if len(alias) < 5 {
+ if len(alias) == 0 {
return impart.HTTPError{Status: http.StatusBadRequest, Message: "Alias is too short."}
}
- if len(alias) > 20 {
- return impart.HTTPError{Status: http.StatusBadRequest, Message: "Alias is too long."}
- }
password := r.FormValue("password")
- if len(password) < 5 {
+ if len(password) == 0 {
return impart.HTTPError{Status: http.StatusBadRequest, Message: "Password is too short."}
}
email := r.FormValue(oauthParamEmail)
if len(email) > 0 {
parts := strings.Split(email, "@")
if len(parts) != 2 || (len(parts[0]) < 1 || len(parts[1]) < 1) {
return impart.HTTPError{Status: http.StatusBadRequest, Message: "Invalid email address"}
}
}
return nil
}
func (h oauthHandler) showOauthSignupPage(app *App, w http.ResponseWriter, r *http.Request, tp *oauthSignupPageParams, errMsg error) error {
username := tp.TokenUsername
alias := tp.TokenAlias
email := tp.TokenEmail
session, err := app.sessionStore.Get(r, cookieName)
if err != nil {
// Ignore this
log.Error("Unable to get session; ignoring: %v", err)
}
if tmpValue := r.FormValue(oauthParamUsername); len(tmpValue) > 0 {
username = tmpValue
}
if tmpValue := r.FormValue(oauthParamAlias); len(tmpValue) > 0 {
alias = tmpValue
}
if tmpValue := r.FormValue(oauthParamEmail); len(tmpValue) > 0 {
email = tmpValue
}
p := &viewOauthSignupVars{
StaticPage: pageForReq(app, r),
To: r.FormValue("to"),
Flashes: []template.HTML{},
AccessToken: tp.AccessToken,
TokenUsername: tp.TokenUsername,
TokenAlias: tp.TokenAlias,
TokenEmail: tp.TokenEmail,
TokenRemoteUser: tp.TokenRemoteUser,
Provider: tp.Provider,
ClientID: tp.ClientID,
TokenHash: tp.TokenHash,
Username: username,
Alias: alias,
Email: email,
}
// Display any error messages
flashes, _ := getSessionFlashes(app, w, r, session)
for _, flash := range flashes {
p.Flashes = append(p.Flashes, template.HTML(flash))
}
if errMsg != nil {
p.Flashes = append(p.Flashes, template.HTML(errMsg.Error()))
}
err = pages["signup-oauth.tmpl"].ExecuteTemplate(w, "base", p)
if err != nil {
log.Error("Unable to render signup-oauth: %v", err)
return err
}
return nil
}

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