I am currently trying to download a small binary file from the web, in order to upload that to another website, both using the API.
Previous versions seemed to have the "file" API module for such purposes, but I can't see anything similar as of the latest (1.14).
The file to be downloaded would be saved in some form of cache (browser cache, preferably), its path stored somewhere, to be then uploaded to another URL via POST.
How would I go about it, when the process should happen completely in the background?
I checked out the how to download a file page, but can't figure out where to download.
Is there a variable URI for the "Downloads" directory, and does a regular Add-On has write privileges in it?.
This is important, because the add-on must be able to function properly on various platforms.
You can use the pref, browser.download.lastDir, which should work for windows/mac as it will be saved in the OS format. However the pref may not always be set if the person has never downloaded anything before. In that case you'll have to build the directory yourself.
var dir = require("sdk/preferences/service").get('browser.download.lastDir');
To build the directory yourself you're going to have to go a little deeper. Check this article on MDN about File I/O which has examples. The DfltDwnld key should give you the directory you want.
Your add-on will have write permissions to everything Firefox has write permission to.
Related
I need to upload a file to OneDrive, via the command line. This will be done through a batch file which is distributed to end users.
From searching on Stack Overflow, I find questions like this one which say that you need to register an app and create an app password, using Azure. I don't have the necessary permissions to do this in the organization where I work, nor can I do anything that requires an admin account. So I can't any install software - I have to use what comes with Windows 10. I can't use VBA either as that's blocked.
I've managed to download files from OneDrive without anything like that, using the process described here:
Open the URL in either of the browser.
Open Developer options using Ctrl+Shift+I.
Go to Network tab.
Now click on download. Saving file isn’t required. We only need the network activity while browser requests the file from the server.
A new entry will appear which would look like “download.aspx?…”.
Right click on that and Copy → Copy as cURL.
Paste the copied content directly in the terminal and append ‘--output file.extension’ to save the content in file.extension since
terminal isn’t capable of showing binary data.
Example:
curl https://xyz.sharepoint.com/personal/someting/_layouts/15/download.aspx?UniqueId=cefb6082%2D696e%2D4f23%2D8c7a%2
…. some long text ….
cCtHR3NuTy82bWFtN1JBRXNlV2ZmekZOdWp3cFRsNTdJdjE2c2syZmxQamhGWnMwdkFBeXZlNWx2UkxDTkJic2hycGNGazVSTnJGUnY1Y1d0WjF5SDJMWHBqTjRmcUNUUWJxVnZYb1JjRG1WbEtjK0VIVWx2clBDQWNyZldid1R3PT08L1NQPg==;
cucg=1’ --compressed --output file.extension
I tried to do something similar after clicking 'upload' on the browser, but didn't find anything useful when trying to filter the requests.
I found these two questions but there is no keyboard shortcut to upload, AFAICT. Also the end user will be uploading a file to a folder I've shared with them from my OneDrive. Opening Chrome or Edge as a minimised window is fine, but I can't just shove a window in their face which automatically clicks on things - they won't like that.
It's just occurred to me that I might be able to use an office application to Save As the file to the necessary onedrive folder, where the keyboard shortcuts are pretty stable, but have no idea how to achieve that via the command line.
The best and more secure way to accomplish this goal I think is going to be with the Rest API for OneDrive.
(Small Files <4MB)
https://learn.microsoft.com/en-us/onedrive/developer/rest-api/api/driveitem_put_content?view=odsp-graph-online
(Large files)
https://learn.microsoft.com/en-us/onedrive/developer/rest-api/api/driveitem_createuploadsession?view=odsp-graph-online
You still need a Azure AD App Registration (which your admin should be able to configure for you), to provide API access to services in Azure. Coding with the API is going to be far easier and less complicated, not to mention more versatile.
The Chrome Apps API has the very useful FileSystem API which allows a user to select a file for an app to edit (read and write changes to). However, with the entire Apps API soon to be removed, what other ways exists to edit a file on the local file system?
This is not an opinion-based question, I am asking for all conceivable alternatives.
Per https://developers.chrome.com/apps/migration:
Q: My app uses the chrome.fileSystem API to read and write user-specified files and / or directories. Can this be done on the open web?
A: In general, no. The open web can read single files that the user opens, but cannot retain access to those files, write to those files, or have any access to directories.
If it is critical for your app to read and write directories (e.g. it is a text editor with a folder view), you will need to either have a native helper app and extension combo, or create a native app.
I would like to add a link to a local file in confluence. Obviously this link would only work if the file is locally on the users computer. I understand that.
If I add the address like this :
file:///D:/dev/ngs-frontend/src/pages/myPage.html
The browser sends me to :
about:blank
If I try to add it with quotes like so :
"file:///D:/dev/ngs-frontend/src/pages/myPage.html"
..confluence crashes!
How is it possible in confluence?
As you mentioned when adding the web link in Confluence specifying the file using the file protocol (file:///) you might face the issue that it doesn't work.
Obviously this link would only work if the file is locally on the users computer.
This is not entirely true. If you open the developer tools you most likely will be getting the error "Not allowed to load local resource"
As measure of security the browser won't let you access files from a different origin, specially from the users computer (this would be a serious security risk). Only imagine if you could access the files in the Windows directory from the browser, you could break apart the operating system in no time (or steal user data).
This is explained in here
If you put the file in the same server Confluence is running, then this should work just fine. However I believe you can save time just adding the page as an attachment and loading it (Confluence is pretty decent at version controlling in case you want to modify the html file).
Hope this helps!
I would like a better workflow for debugging uploaded SCOs. As things are, I must edit a file in the activity, repackage, upload, and test. Often, I just need to change a single line of code. It would be VERY nice to be able to edit that file, that line of code, on the server. So far, all I've found is that Moodle manages the files, so it seems impractical to locate and decipher the renamed files after upload.
Is there a way to configure Moodle so that it doesn't rename and relocated files in SCOs upon extraction? Actually, I'm open to any suggestions on the best, fastest workflow for debugging SCOs.
Problem background
Since Moodle 2.0, files are no longer stored on server in the conventional /this/is/the/path/to/my.file way. Instead, files are rehashed and stored in Repositories (i.e. spread all over the moodledata folder as a collection of seemingly random data). This increases security and cross-OS compatibility but complicates stuff for people who would like to simply upload a SCORM zip package via FTP. Here's more information on file handling in Moodle 2.0
Path to the soluton
Let's locate the file you want to update, then update it.
Run phpmyadmin, go to mdl_files table, find your file by name in the filename field (let's say it's portrait.jpg)
Look at the contenthash field, it'll look like abcde1234567890. This means your file is stored in moodledata/filedir/ab/cd/ folder under the name abcde1234567890.
Rename the updated portrait.jpg to abcde1234567890, upload and overwrite.
Go back to phpmyadmin and update the filesize field in record for portrait.jpg with the size of the updated file.
Obviously, this process can be automated. You'll have to write a script that allows you to upload a file, then it'll search for that file in mdl_files, save it to the correct folder and update all fields accordingly.
Alternative idea
Enable external package type (and also enable 'Update on every launch'). Go to Site administration / Plugins / Activities / SCORM and check the box down below. Now you'll be able to launch SCORM packages directly from another server, so Moodle won't mess with it. Of course, you can run in other (probably cross-domain related) problems.
Sergey's answer is very good, with one caveat:
In his example with the contenthash of abcde1234567890, the file is stored in the moodledata/filedir/ab/cd/ folder under the name abcde1234567890. Moodle uses the full contenthash to name the file.
How do you distribute other files needed by your application that aren't in a jar file? For example, the application at http://www.javabeginner.com/java-swing/java-swing-shuffle-game . The download contains Shuffle.jar, Shuffle.bat, Score.dat, and an images folder with 3 images in it. I can see possibly putting the images directly in Shuffle.jar, but you wouldn't want to put Score.dat in the jar file because it changes. Is there somewhere you could identify this type of file in the jnlp?
The non-java files should be stored as resources. For files that change, you store the original or template file also as a resource in your jar. When the program starts, you have it check the local system to see if that file exists. If not, it creates the local file by copying the template file from the JAR resource. If the file already exists, then it is used as is.
To save files to the local system, even when running in the sandbox (unsigned), you can use the PersistenceService (javadoc / example). If your java application is signed, then you can use the regular File apis to write the file to the local machine, such as in a ".yourgame" subfolder under the user's home folder.
You can put all those files (except the scores file) in your jar file and load the contents using resource loading.
I've just deleted and restarted my reply twice now, changing my answer each time; this is confusing and needs a bit more clarification.
Are you SURE that application is supposed to be a Web Start app? On the site you linked to, it doesn't appear to be. Are you trying to take an application that was not designed as a Web Start application and change it into one that can be Web Start?
If it's not a Web Start app as your tag implies, then this question is open ended. You can distribute it 100 different ways.
If you are indeed trying to convert it into a Web Start app, you can start by packaging the images into the jar and that will alleviate your first headache if you just read them from there instead of from a File(). If it's going to be Web Start, then you need to decide how you want to keep scores. You have to decide what the scoring system is like before you can decide on how to go about it; will all the scores be kept on the web site hosting the Web Start app? Will that part still be local? If you want to get access to the local file system, you need to sign the jar, then you can extract the score.dat to the file system and do whatever you want with it if the end user accepts.
You need to figure out what you want to do before you can do it, or at least clear it up for us if you already know more than we know you know.