| 1 | import { isHex, isU8a, u8aToU8a } from '@polkadot/util';
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| 2 | import { base58Decode } from '../base58/index.js';
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| 3 | import { checkAddressChecksum } from './checksum.js';
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| 4 | import { defaults } from './defaults.js';
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| 5 | export function decodeAddress(encoded, ignoreChecksum, ss58Format = -1) {
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| 6 | if (!encoded) {
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| 7 | throw new Error('Invalid empty address passed');
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| 8 | }
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| 9 | if (isU8a(encoded) || isHex(encoded)) {
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| 10 | return u8aToU8a(encoded);
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| 11 | }
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| 12 | try {
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| 13 | const decoded = base58Decode(encoded);
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| 14 | if (!defaults.allowedEncodedLengths.includes(decoded.length)) {
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| 15 | throw new Error('Invalid decoded address length');
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| 16 | }
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| 17 | const [isValid, endPos, ss58Length, ss58Decoded] = checkAddressChecksum(decoded);
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| 18 | if (!isValid && !ignoreChecksum) {
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| 19 | throw new Error('Invalid decoded address checksum');
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| 20 | }
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| 21 | else if (ss58Format !== -1 && ss58Format !== ss58Decoded) {
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| 22 | throw new Error(`Expected ss58Format ${ss58Format}, received ${ss58Decoded}`);
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| 23 | }
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| 24 | return decoded.slice(ss58Length, endPos);
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| 25 | }
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| 26 | catch (error) {
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| 27 | throw new Error(`Decoding ${encoded}: ${error.message}`);
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| 28 | }
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| 29 | }
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