1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/**
* Handles the export requests
*/
/*
* 2011 Peter 'Pita' Martischka (Primary Technology Ltd)
* 2014 John McLear (Etherpad Foundation / McLear Ltd)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS-IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var ERR = require("async-stacktrace");
var exporthtml = require("../utils/ExportHtml");
var exporttxt = require("../utils/ExportTxt");
var exportEtherpad = require("../utils/ExportEtherpad");
var async = require("async");
var fs = require("fs");
var settings = require('../utils/Settings');
var os = require('os');
var hooks = require("ep_etherpad-lite/static/js/pluginfw/hooks");
var TidyHtml = require('../utils/TidyHtml');
var convertor = null;
//load abiword only if its enabled
if(settings.abiword != null)
convertor = require("../utils/Abiword");
// Use LibreOffice if an executable has been defined in the settings
if(settings.soffice != null)
convertor = require("../utils/LibreOffice");
var tempDirectory = "/tmp";
//tempDirectory changes if the operating system is windows
if(os.type().indexOf("Windows") > -1)
{
tempDirectory = process.env.TEMP;
}
/**
* do a requested export
*/
exports.doExport = function(req, res, padId, type)
{
var fileName = padId;
// allow fileName to be overwritten by a hook, the type type is kept static for security reasons
hooks.aCallFirst("exportFileName", padId,
function(err, hookFileName){
// if fileName is set then set it to the padId, note that fileName is returned as an array.
if(hookFileName.length) fileName = hookFileName;
//tell the browser that this is a downloadable file
res.attachment(fileName + "." + type);
//if this is a plain text export, we can do this directly
// We have to over engineer this because tabs are stored as attributes and not plain text
if(type == "etherpad"){
exportEtherpad.getPadRaw(padId, function(err, pad){
if(!err){
res.send(pad);
// return;
}
});
}
else if(type == "txt")
{
exporttxt.getPadTXTDocument(padId, req.params.rev, false, function(err, txt)
{
if(ERR(err)) return;
res.send(txt);
});
}
else
{
var html;
var randNum;
var srcFile, destFile;
async.series([
//render the html document
function(callback)
{
exporthtml.getPadHTMLDocument(padId, req.params.rev, false, function(err, _html)
{
if(ERR(err, callback)) return;
html = _html;
callback();
});
},
//decide what to do with the html export
function(callback)
{
//if this is a html export, we can send this from here directly
if(type == "html")
{
// do any final changes the plugin might want to make
hooks.aCallFirst("exportHTMLSend", html, function(err, newHTML){
if(newHTML.length) html = newHTML;
res.send(html);
callback("stop");
});
}
else //write the html export to a file
{
randNum = Math.floor(Math.random()*0xFFFFFFFF);
srcFile = tempDirectory + "/etherpad_export_" + randNum + ".html";
fs.writeFile(srcFile, html, callback);
}
},
// Tidy up the exported HTML
function(callback)
{
//ensure html can be collected by the garbage collector
html = null;
TidyHtml.tidy(srcFile, callback);
},
//send the convert job to the convertor (abiword, libreoffice, ..)
function(callback)
{
destFile = tempDirectory + "/etherpad_export_" + randNum + "." + type;
// Allow plugins to overwrite the convert in export process
hooks.aCallAll("exportConvert", {srcFile: srcFile, destFile: destFile, req: req, res: res}, function(err, result){
if(!err && result.length > 0){
// console.log("export handled by plugin", destFile);
handledByPlugin = true;
callback();
}else{
convertor.convertFile(srcFile, destFile, type, callback);
}
});
},
//send the file
function(callback)
{
res.sendFile(destFile, null, callback);
},
//clean up temporary files
function(callback)
{
async.parallel([
function(callback)
{
fs.unlink(srcFile, callback);
},
function(callback)
{
//100ms delay to accomidate for slow windows fs
if(os.type().indexOf("Windows") > -1)
{
setTimeout(function()
{
fs.unlink(destFile, callback);
}, 100);
}
else
{
fs.unlink(destFile, callback);
}
}
], callback);
}
], function(err)
{
if(err && err != "stop") ERR(err);
})
}
}
);
};
|
