[Bug] Hestia allows umlauts for user names, which produces some issues.

[ScIT-Raphael]

Describe the bug

root@webxx:/backup# v-backup-user xxx
/usr/local/hestia/bin/v-backup-user: line 178: Error: Invalid key value format [U_SYS_USERS=$'xxxx,XXX-XXX,B\303\244ren-XXX,ith'] * 2: syntax error in expression (error token is ": Invalid key value format [U_SYS_USERS=$'xxxx,XXX-XXX,B\303\244ren-XXX,ith''] * 2")

Tell us how to replicate the bug

Add a user with umlauts (for example ä ü ö).

Which components are affected by this bug?

Control Panel Command Line Interface

Hestia Control Panel Version

1.7.0~alpha

Operating system

Ubuntu 22.04 LTS

Log capture

No response

[jaapmarcus]

root@dev:# v-add-user "tetäesfawea" afwe me@xxxx
root@dev:# v-add-user "äesfawea" afwe me@xxxx

Both work :|

https://github.com/hestiacp/hestiacp/blob/main/func/main.sh#L1566-L1570

[jaapmarcus]

It is using:

hestiacp/func/main.sh

Lines 680 to 691 in bce434f

	# User format validator
	is_user_format_valid() {
	if [ ${#1} -eq 1 ]; then
	if ! [[ "$1" =~ ^^[[:alnum:]]$ ]]; then
	check_result "$E_INVALID" "invalid $2 format :: $1"
	fi
	else
	if ! [[ "$1" =~ ^[[:alnum:]][-|\.|_[:alnum:]]{0,28}[[:alnum:]]$ ]]; then
	check_result "$E_INVALID" "invalid $2 format :: $1"
	fi
	fi
	}