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Allow stored session parameters to be overwritten in the registration request (#2309)

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* Allow stored session parameters to be overwritten in the registration request

* Remove logging

* Close request body

* Use `httputil.UnmarshalJSON` as that should enforce UTF-8 correctness

* Return `M_NOT_JSON` on read error

* Whoops, return the value of `httputil.UnmarshalJSON`

* Remove redundant comment
This commit is contained in:
Neil Alexander 2022-03-28 10:47:35 +01:00 committed by GitHub
parent 08d995d809
commit ceb3874469
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1 changed files with 30 additions and 21 deletions
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51
clientapi/routing/register.go
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@ -31,6 +31,7 @@ import (
"github.com/matrix-org/dendrite/internal/eventutil"
"github.com/matrix-org/dendrite/setup/config"
"github.com/tidwall/gjson"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/gomatrixserverlib/tokens"
@ -525,22 +526,37 @@ func Register(
userAPI userapi.UserRegisterAPI,
cfg *config.ClientAPI,
) util.JSONResponse {
defer req.Body.Close() // nolint: errcheck
reqBody, err := ioutil.ReadAll(req.Body)
if err != nil {
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: jsonerror.NotJSON("Unable to read request body"),
}
}
var r registerRequest
resErr := httputil.UnmarshalJSONRequest(req, &r)
if resErr != nil {
sessionID := gjson.GetBytes(reqBody, "auth.session").String()
if sessionID == "" {
// Generate a new, random session ID
sessionID = util.RandomString(sessionIDLength)
} else if data, ok := sessions.getParams(sessionID); ok {
// Use the parameters from the session as our defaults.
// Some of these might end up being overwritten if the
// values are specified again in the request body.
r.Username = data.Username
r.Password = data.Password
r.DeviceID = data.DeviceID
r.InitialDisplayName = data.InitialDisplayName
r.InhibitLogin = data.InhibitLogin
}
if resErr := httputil.UnmarshalJSON(reqBody, &r); resErr != nil {
return *resErr
}
if req.URL.Query().Get("kind") == "guest" {
return handleGuestRegistration(req, r, cfg, userAPI)
}
// Retrieve or generate the sessionID
sessionID := r.Auth.Session
if sessionID == "" {
// Generate a new, random session ID
sessionID = util.RandomString(sessionIDLength)
}
// Don't allow numeric usernames less than MAX_INT64.
if _, err := strconv.ParseInt(r.Username, 10, 64); err == nil {
return util.JSONResponse{
@ -568,7 +584,7 @@ func Register(
case r.Type == authtypes.LoginTypeApplicationService && accessTokenErr == nil:
// Spec-compliant case (the access_token is specified and the login type
// is correctly set, so it's an appservice registration)
if resErr = validateApplicationServiceUsername(r.Username); resErr != nil {
if resErr := validateApplicationServiceUsername(r.Username); resErr != nil {
return *resErr
}
case accessTokenErr == nil:
@ -581,11 +597,11 @@ func Register(
default:
// Spec-compliant case (neither the access_token nor the login type are
// specified, so it's a normal user registration)
if resErr = validateUsername(r.Username); resErr != nil {
if resErr := validateUsername(r.Username); resErr != nil {
return *resErr
}
}
if resErr = validatePassword(r.Password); resErr != nil {
if resErr := validatePassword(r.Password); resErr != nil {
return *resErr
}
@ -835,24 +851,17 @@ func completeRegistration(
}
}()
if data, ok := sessions.getParams(sessionID); ok {
username = data.Username
password = data.Password
deviceID = data.DeviceID
displayName = data.InitialDisplayName
inhibitLogin = data.InhibitLogin
}
if username == "" {
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: jsonerror.BadJSON("missing username"),
JSON: jsonerror.MissingArgument("Missing username"),
}
}
// Blank passwords are only allowed by registered application services
if password == "" && appserviceID == "" {
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: jsonerror.BadJSON("missing password"),
JSON: jsonerror.MissingArgument("Missing password"),
}
}
var accRes userapi.PerformAccountCreationResponse