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Check userID against AS namespace instead of localpart (#533)

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Andrew Morgan 2018-07-17 08:36:23 -07:00 committed by GitHub
parent 40b1dd6f12
commit d2b349a75a
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 13 additions and 2 deletions
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15
src/github.com/matrix-org/dendrite/clientapi/routing/register.go
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@ -335,9 +335,10 @@ func UsernameMatchesMultipleExclusiveNamespaces(
cfg *config.Dendrite,
username string,
) bool {
userID := userutil.MakeUserID(username, cfg.Matrix.ServerName)
// Check namespaces and see if more than one match
matchCount := 0
userID := userutil.MakeUserID(username, cfg.Matrix.ServerName)
for _, appservice := range cfg.Derived.ApplicationServices {
if appservice.IsInterestedInUserID(userID) {
if matchCount++; matchCount > 1 {
@ -348,6 +349,16 @@ func UsernameMatchesMultipleExclusiveNamespaces(
return false
}
// UsernameMatchesExclusiveNamespaces will check if a given username matches any
// application service's exclusive users namespace
func UsernameMatchesExclusiveNamespaces(
cfg *config.Dendrite,
username string,
) bool {
userID := userutil.MakeUserID(username, cfg.Matrix.ServerName)
return cfg.Derived.ExclusiveApplicationServicesUsernameRegexp.MatchString(userID)
}
// validateApplicationService checks if a provided application service token
// corresponds to one that is registered. If so, then it checks if the desired
// username is within that application service's namespace. As long as these
@ -466,7 +477,7 @@ func Register(
// service namespace. Skip this check if no app services are registered.
if r.Auth.Type != "m.login.application_service" &&
len(cfg.Derived.ApplicationServices) != 0 &&
cfg.Derived.ExclusiveApplicationServicesUsernameRegexp.MatchString(r.Username) {
UsernameMatchesExclusiveNamespaces(cfg, r.Username) {
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: jsonerror.ASExclusive("This username is reserved by an application service."),