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feat(Crypto Node): Add support for hash and hmac on binary data (#6359)

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कारतोफ्फेलस्क्रिप्ट™
2023-06-02 09:22:21 +00:00
committed by GitHub
parent 9dfc11037b
commit 406a405dd1
3 changed files with 168 additions and 57 deletions
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79
packages/nodes-base/nodes/Crypto/Crypto.node.ts
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@@ -9,13 +9,17 @@ import type {
INodeTypeDescription,
JsonObject,
} from 'n8n-workflow';
import { deepCopy } from 'n8n-workflow';
import { deepCopy, BINARY_ENCODING } from 'n8n-workflow';
import type { BinaryToTextEncoding } from 'crypto';
import { createHash, createHmac, createSign, getHashes, randomBytes } from 'crypto';
import stream from 'stream';
import { promisify } from 'util';
import { v4 as uuid } from 'uuid';
const pipeline = promisify(stream.pipeline);
export class Crypto implements INodeType {
description: INodeTypeDescription = {
displayName: 'Crypto',
@@ -45,15 +49,15 @@ export class Crypto implements INodeType {
},
{
name: 'Hash',
description: 'Hash a text in a specified format',
description: 'Hash a text or file in a specified format',
value: 'hash',
action: 'Hash a text in a specified format',
action: 'Hash a text or file in a specified format',
},
{
name: 'Hmac',
description: 'Hmac a text in a specified format',
description: 'Hmac a text or file in a specified format',
value: 'hmac',
action: 'HMAC a text in a specified format',
action: 'HMAC a text or file in a specified format',
},
{
name: 'Sign',
@@ -107,12 +111,40 @@ export class Crypto implements INodeType {
description: 'The hash type to use',
required: true,
},
{
displayName: 'Binary Data',
name: 'binaryData',
type: 'boolean',
default: false,
required: true,
displayOptions: {
show: {
action: ['hash', 'hmac'],
},
},
description: 'Whether the data to hashed should be taken from binary field',
},
{
displayName: 'Binary Property Name',
name: 'binaryPropertyName',
displayOptions: {
show: {
action: ['hash', 'hmac'],
binaryData: [true],
},
},
type: 'string',
default: 'data',
description: 'Name of the binary property which contains the input data',
required: true,
},
{
displayName: 'Value',
name: 'value',
displayOptions: {
show: {
action: ['hash'],
binaryData: [false],
},
},
type: 'string',
@@ -204,6 +236,7 @@ export class Crypto implements INodeType {
displayOptions: {
show: {
action: ['hmac'],
binaryData: [false],
},
},
type: 'string',
@@ -264,6 +297,7 @@ export class Crypto implements INodeType {
displayOptions: {
show: {
action: ['sign'],
binaryData: [false],
},
},
type: 'string',
@@ -430,6 +464,7 @@ export class Crypto implements INodeType {
const dataPropertyName = this.getNodeParameter('dataPropertyName', i);
const value = this.getNodeParameter('value', i, '') as string;
let newValue;
let binaryProcessed = false;
if (action === 'generate') {
const encodingType = this.getNodeParameter('encodingType', i);
@@ -449,17 +484,33 @@ export class Crypto implements INodeType {
}
}
}
if (action === 'hash') {
if (action === 'hash' || action === 'hmac') {
const type = this.getNodeParameter('type', i) as string;
const encoding = this.getNodeParameter('encoding', i) as BinaryToTextEncoding;
newValue = createHash(type).update(value).digest(encoding);
}
if (action === 'hmac') {
const type = this.getNodeParameter('type', i) as string;
const secret = this.getNodeParameter('secret', i) as string;
const encoding = this.getNodeParameter('encoding', i) as BinaryToTextEncoding;
newValue = createHmac(type, secret).update(value).digest(encoding);
const hashOrHmac =
action === 'hash'
? createHash(type)
: createHmac(type, this.getNodeParameter('secret', i) as string);
if (this.getNodeParameter('binaryData', i)) {
const binaryPropertyName = this.getNodeParameter('binaryPropertyName', i);
const binaryData = this.helpers.assertBinaryData(i, binaryPropertyName);
if (binaryData.id) {
const binaryStream = this.helpers.getBinaryStream(binaryData.id);
hashOrHmac.setEncoding(encoding);
await pipeline(binaryStream, hashOrHmac);
newValue = hashOrHmac.read();
} else {
newValue = hashOrHmac
.update(Buffer.from(binaryData.data, BINARY_ENCODING))
.digest(encoding);
}
binaryProcessed = true;
} else {
newValue = hashOrHmac.update(value).digest(encoding);
}
}
if (action === 'sign') {
const algorithm = this.getNodeParameter('algorithm', i) as string;
const encoding = this.getNodeParameter('encoding', i) as BinaryToTextEncoding;
@@ -489,7 +540,7 @@ export class Crypto implements INodeType {
};
}
if (item.binary !== undefined) {
if (item.binary !== undefined && !binaryProcessed) {
newItem.binary = item.binary;
}