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[GITEA] add option for banning dots in usernames

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Refs: https://codeberg.org/forgejo/forgejo/pulls/676

Author:    Panagiotis "Ivory" Vasilopoulos <git@n0toose.net>
Date:      Mon Jun 12 13:57:01 2023 +0200

Co-authored-by: Gusted <postmaster@gusted.xyz>
(cherry picked from commit fabdda5c6e)
(cherry picked from commit d2c7f45621)
(cherry picked from commit dfdbaba3d6)
(cherry picked from commit a3cda092b8)
(cherry picked from commit f0fdb5905c)
(cherry picked from commit 9697e48c1f)
(cherry picked from commit 46e31009a8)
(cherry picked from commit 5bb2c54b6f)
(cherry picked from commit 682f9d24e1)
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Panagiotis "Ivory" Vasilopoulos 2023-06-12 13:57:01 +02:00 • committed by Earl Warren
commit 1863481005
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7 changed files with 57 additions and 5 deletions
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13
modules/validation/helpers.go
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@ -92,13 +92,20 @@ func IsValidExternalTrackerURLFormat(uri string) bool {
}
var (
validUsernamePattern = regexp.MustCompile(`^[\da-zA-Z][-.\w]*$`)
invalidUsernamePattern = regexp.MustCompile(`[-._]{2,}|[-._]$`) // No consecutive or trailing non-alphanumeric chars
validUsernamePatternWithDots = regexp.MustCompile(`^[\da-zA-Z][-.\w]*$`)
validUsernamePatternWithoutDots = regexp.MustCompile(`^[\da-zA-Z][-\w]*$`)
// No consecutive or trailing non-alphanumeric chars, catches both cases
invalidUsernamePattern = regexp.MustCompile(`[-._]{2,}|[-._]$`)
)
// IsValidUsername checks if username is valid
func IsValidUsername(name string) bool {
// It is difficult to find a single pattern that is both readable and effective,
// but it's easier to use positive and negative checks.
return validUsernamePattern.MatchString(name) && !invalidUsernamePattern.MatchString(name)
if setting.Service.AllowDotsInUsernames {
return validUsernamePatternWithDots.MatchString(name) && !invalidUsernamePattern.MatchString(name)
}
return validUsernamePatternWithoutDots.MatchString(name) && !invalidUsernamePattern.MatchString(name)
}