From f0bd9152ef6cb9b5a312d20b93e004eaa84a86bf Mon Sep 17 00:00:00 2001
From: Niko Marmeladkov <niko@n1ko.dev>
Date: Wed, 26 Aug 2026 12:11:19 +0300
Subject: [PATCH] =?UTF-8?q?install.sh:=20tr=20'[:space:]'=20->=20'=20\t\r\?=
 =?UTF-8?q?n'=20=E2=80=94=20=D1=81=D1=82=D0=B0=D1=80=D1=8B=D0=B5=20busybox?=
 =?UTF-8?q?=20=D0=BD=D0=B5=20=D0=B7=D0=BD=D0=B0=D1=8E=D1=82=20POSIX-=D0=BA?=
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---
 install.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/install.sh b/install.sh
index a7dcf1b..689d6d9 100755
--- a/install.sh
+++ b/install.sh
@@ -99,11 +99,13 @@ api_get() {
 }
 
 read_creds() {
+    # ВАЖНО: не использовать tr '[:space:]' — старые busybox не знают
+    # POSIX-классы и вырезают литеральные буквы из кредов
     if [ -n "$NIKOVPN_CREDS" ]; then
-        CRED=$(printf '%s' "$NIKOVPN_CREDS" | tr -d '[:space:]')
+        CRED=$(printf '%s' "$NIKOVPN_CREDS" | tr -d ' \t\r\n')
     else
         [ -f "$CREDS_FILE" ] || die "нет кредов: запишите 'login:password' в $CREDS_FILE или задайте env NIKOVPN_CREDS"
-        CRED=$(grep -v '^[[:space:]]*#' "$CREDS_FILE" 2>/dev/null | grep -v '^[[:space:]]*$' | head -1 | tr -d '[:space:]')
+        CRED=$(grep -v '^[[:space:]]*#' "$CREDS_FILE" 2>/dev/null | grep -v '^[[:space:]]*$' | head -1 | tr -d ' \t\r\n')
         [ -n "$CRED" ] || die "$CREDS_FILE пуст — запишите 'login:password'"
     fi
     case "$CRED" in *:*) ;; *) die "в кредах нет ':' — формат login:password" ;; esac