25 lines
787 B
TypeScript
25 lines
787 B
TypeScript
export function validateDottedDecimalIPv4Input(value: string | undefined): string | undefined {
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if (!value) {
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return "IP address is required for custom bind mode";
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}
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const trimmed = value.trim();
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const parts = trimmed.split(".");
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if (parts.length !== 4) {
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return "Invalid IPv4 address (e.g., 192.168.1.100)";
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}
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if (
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parts.every((part) => {
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const n = parseInt(part, 10);
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return !Number.isNaN(n) && n >= 0 && n <= 255 && part === String(n);
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})
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) {
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return undefined;
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}
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return "Invalid IPv4 address (each octet must be 0-255)";
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}
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// Backward-compatible alias for callers using the old helper name.
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export function validateIPv4AddressInput(value: string | undefined): string | undefined {
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return validateDottedDecimalIPv4Input(value);
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}
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