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Fixup Base64 node and add better tests

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Revert correct <-> behaviour, make encoding info clearer, added type
checking - to close #401 and close #437
This commit is contained in:
Dave Conway-Jones
2018-04-29 17:35:30 +01:00
parent 5019f68c9c
commit 6a28ecfbc2
4 changed files with 148 additions and 17 deletions
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5
parsers/base64/70-base64.html
View File

@@ -4,7 +4,7 @@
<label for="node-input-action"><i class="fa fa-dot-circle-o"></i> Action</label>
<select style="width:70%" id="node-input-action">
<option value="">Convert Buffer <-> Base64</option>
<option value="str">Convert String to Base64</option>
<option value="str">Encode as Base64</option>
<option value="b64">Convert Base64 to String</option>
</select>
</div>
@@ -22,7 +22,8 @@
<p>A function that converts the chosen property (default <code>msg.payload</code>) to and from base64 format.</p>
<p>If the input is a buffer it converts it to a Base64 encoded string.</p>
<p>If the input is a Base64 string it converts it back to a binary buffer.</p>
<p>You can also fix conversion string to base64,and base64 to string if required.</p>
<p>You can also fix coding into base64, and base64 to buffer if required.</p>
<p>Note: Using "Encode to Base64" will encode an already encoded string.</p>
</script>
<script type="text/javascript">

35
parsers/base64/70-base64.js
View File

@@ -6,10 +6,29 @@ module.exports = function(RED) {
this.action = n.action || "";
this.property = n.property || "payload";
var node = this;
var regexp = new RegExp('^[A-Za-z0-9+\/=]*$'); // check it only contains valid characters
this.on("input", function(msg) {
var value = RED.util.getMessageProperty(msg,node.property);
if (value !== undefined) {
if (node.action === "") {
if (node.action === "str") {
value = RED.util.ensureBuffer(value).toString('base64');
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
else if (node.action === "b64") {
if ( typeof value === "string") {
var load = value.replace(/\s+/g,'');
if (regexp.test(load) && (load.length % 4 === 0) ) {
value = Buffer.from(load,'base64').toString('binary');
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
else { node.error("Invalid Base64 string",msg); }
}
else { node.error("Not a Base64 string",msg); }
}
else {
if (Buffer.isBuffer(value)) {
// Take binary buffer and make into a base64 string
value = value.toString('base64');
@@ -21,9 +40,8 @@ module.exports = function(RED) {
var load = value.replace(/\s+/g,''); // remove any whitespace
//var load = value.replace(/[\t\r\n\f]+/g,'');
//var load = value;
var regexp = new RegExp('^[A-Za-z0-9+\/=]*$'); // check it only contains valid characters
if ( regexp.test(load) && (load.length % 4 === 0) ) {
value = Buffer.from(load,'base64').toString('binary');
value = Buffer.from(load,'base64');
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
@@ -38,17 +56,6 @@ module.exports = function(RED) {
node.warn("This node only handles strings or buffers.");
}
}
if (node.action === "str") {
value = Buffer.from(value).toString('base64');
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
if (node.action === "b64") {
var load = value.replace(/\s+/g,'');
value = Buffer.from(load,'base64').toString('binary');
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
}
else { node.warn("No property found to process"); }
});

2
parsers/base64/package.json
View File

@@ -1,6 +1,6 @@
{
"name" : "node-red-node-base64",
"version" : "0.1.2",
"version" : "0.1.3",
"description" : "A Node-RED node to pack and unpack objects to base64 format",
"dependencies" : {
},