65 lines
3.0 KiB
JavaScript
65 lines
3.0 KiB
JavaScript
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module.exports = function(RED) {
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"use strict";
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function Base64Node(n) {
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RED.nodes.createNode(this,n);
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this.action = n.action || "";
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this.property = n.property || "payload";
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var node = this;
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var regexp = new RegExp('^[A-Za-z0-9+\/=]*$'); // check it only contains valid characters
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this.on("input", function(msg) {
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var value = RED.util.getMessageProperty(msg,node.property);
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if (value !== undefined) {
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if (node.action === "str") {
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value = RED.util.ensureBuffer(value).toString('base64');
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RED.util.setMessageProperty(msg,node.property,value);
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node.send(msg);
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}
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else if (node.action === "b64") {
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if ( typeof value === "string") {
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var load = value.replace(/\s+/g,'');
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if (regexp.test(load) && (load.length % 4 === 0) ) {
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value = Buffer.from(load,'base64').toString('binary');
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RED.util.setMessageProperty(msg,node.property,value);
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node.send(msg);
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}
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else { node.error(RED._("base64.error.invalid"),msg); }
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}
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else { node.error(RED._("base64.error.nonbase64"),msg); }
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}
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else {
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if (Buffer.isBuffer(value)) {
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// Take binary buffer and make into a base64 string
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value = value.toString('base64');
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RED.util.setMessageProperty(msg,node.property,value);
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node.send(msg);
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}
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else if (typeof value === "string") {
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// Take base64 string and make into binary buffer
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var load = value.replace(/\s+/g,''); // remove any whitespace
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//var load = value.replace(/[\t\r\n\f]+/g,'');
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//var load = value;
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if ( regexp.test(load) && (load.length % 4 === 0) ) {
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value = Buffer.from(load,'base64');
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RED.util.setMessageProperty(msg,node.property,value);
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node.send(msg);
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}
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else {
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node.log(RED._("base64.log.nonbase64encode"));
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value = Buffer.from(value).toString('base64');
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RED.util.setMessageProperty(msg,node.property,value);
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node.send(msg);
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}
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}
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else {
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node.warn(RED._("base64.warn.cannothandle"));
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}
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}
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}
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else { node.warn(RED._("base64.warn.noproperty")); }
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});
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}
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RED.nodes.registerType("base64",Base64Node);
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}
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