mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-09 03:19:56 +00:00
104 lines
3.4 KiB
JavaScript
104 lines
3.4 KiB
JavaScript
/*\
|
|
title: $:/plugins/tiddlywiki/multiwikiserver/routes/helpers/multipart-forms.js
|
|
type: application/javascript
|
|
module-type: library
|
|
|
|
A function that handles an incoming multipart/form-data stream, streaming the data to temporary files
|
|
in the store/inbox folder. Once the data is received, it imports any tiddlers and invokes a callback.
|
|
|
|
\*/
|
|
|
|
(function() {
|
|
|
|
/*
|
|
Process an incoming new multipart/form-data stream. Options include:
|
|
|
|
store - tiddler store
|
|
state - provided by server.js
|
|
response - provided by server.js
|
|
bagname - name of bag to write to
|
|
callback - invoked as callback(err,results). Results is an array of titles of imported tiddlers
|
|
*/
|
|
exports.processIncomingStream = function(options) {
|
|
const self = this;
|
|
const path = require("path"),
|
|
fs = require("fs");
|
|
// Process the incoming data
|
|
const inboxName = $tw.utils.stringifyDate(new Date());
|
|
const inboxPath = path.resolve(options.store.attachmentStore.storePath,"inbox",inboxName);
|
|
$tw.utils.createDirectory(inboxPath);
|
|
let fileStream = null; // Current file being written
|
|
let hash = null; // Accumulating hash of current part
|
|
let length = 0; // Accumulating length of current part
|
|
const parts = []; // Array of {name:, headers:, value:, hash:} and/or {name:, filename:, headers:, inboxFilename:, hash:}
|
|
options.state.streamMultipartData({
|
|
cbPartStart: function(headers,name,filename) {
|
|
console.log(`Received file ${name} and ${filename} with ${JSON.stringify(headers)}`)
|
|
const part = {
|
|
name: name,
|
|
filename: filename,
|
|
headers: headers
|
|
};
|
|
if(filename) {
|
|
const inboxFilename = (parts.length).toString();
|
|
part.inboxFilename = path.resolve(inboxPath,inboxFilename);
|
|
fileStream = fs.createWriteStream(part.inboxFilename);
|
|
} else {
|
|
part.value = "";
|
|
}
|
|
hash = new $tw.sjcl.hash.sha256();
|
|
length = 0;
|
|
parts.push(part)
|
|
},
|
|
cbPartChunk: function(chunk) {
|
|
if(fileStream) {
|
|
fileStream.write(chunk);
|
|
} else {
|
|
parts[parts.length - 1].value += chunk;
|
|
}
|
|
length = length + chunk.length;
|
|
hash.update(chunk);
|
|
console.log(`Got a chunk of length ${chunk.length}, length is now ${length}`);
|
|
},
|
|
cbPartEnd: function() {
|
|
if(fileStream) {
|
|
fileStream.end();
|
|
}
|
|
fileStream = null;
|
|
parts[parts.length - 1].hash = $tw.sjcl.codec.hex.fromBits(hash.finalize()).slice(0,64).toString();
|
|
hash = null;
|
|
},
|
|
cbFinished: function(err) {
|
|
if(err) {
|
|
return options.callback(err);
|
|
} else {
|
|
console.log(`Multipart form data processed as ${JSON.stringify(parts,null,4)}`);
|
|
const partFile = parts.find(part => part.name === "file-to-upload" && !!part.filename);
|
|
if(!partFile) {
|
|
return state.sendResponse(400, {"Content-Type": "text/plain"},"Missing file to upload");
|
|
}
|
|
const type = partFile.headers["content-type"];
|
|
const tiddlerFields = {
|
|
title: partFile.filename,
|
|
type: type
|
|
};
|
|
for(const part of parts) {
|
|
const tiddlerFieldPrefix = "tiddler-field-";
|
|
if(part.name.startsWith(tiddlerFieldPrefix)) {
|
|
tiddlerFields[part.name.slice(tiddlerFieldPrefix.length)] = part.value.trim();
|
|
}
|
|
}
|
|
console.log(`Creating tiddler with ${JSON.stringify(tiddlerFields)} and ${partFile.filename}`)
|
|
options.store.saveBagTiddlerWithAttachment(tiddlerFields,options.bagname,{
|
|
filepath: partFile.inboxFilename,
|
|
type: type,
|
|
hash: partFile.hash
|
|
});
|
|
$tw.utils.deleteDirectory(inboxPath);
|
|
options.callback(null,[tiddlerFields.title]);
|
|
}
|
|
}
|
|
});
|
|
};
|
|
|
|
})(); |