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Only check access tokens if they are likely to be tokens (#16164) 

* Only check access tokens if they are likely to be tokens

Gitea will currently check every if every password is an access token even though
most passwords are not and cannot be access tokens.

By creation access tokens are 40 byte hexadecimal strings therefore only these should
be checked.

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2021-06-15 23:29:25 +01:00 committed by GitHub
parent 3d991319df
commit b8e4ce754e
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1 changed files with 7 additions and 1 deletions
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8
models/token.go
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@ -57,9 +57,15 @@ func GetAccessTokenBySHA(token string) (*AccessToken, error) {
if token == "" {
return nil, ErrAccessTokenEmpty{}
}
if len(token) < 8 {
// A token is defined as being SHA1 sum these are 40 hexadecimal bytes long
if len(token) != 40 {
return nil, ErrAccessTokenNotExist{token}
}
for _, x := range []byte(token) {
if x < '0' || (x > '9' && x < 'a') || x > 'f' {
return nil, ErrAccessTokenNotExist{token}
}
}
var tokens []AccessToken
lastEight := token[len(token)-8:]
err := x.Table(&AccessToken{}).Where("token_last_eight = ?", lastEight).Find(&tokens)