I have a web page that allow to upload a file via the basic <input type=file /> I know that with javascript there's no way to get the full path after selection but .. is there a way to ACCEPT files only from certain paths, as I do with extensions (*.jpg, etc)?
I'm in a Windows systems intranet scenario and for security issues, the file I have to upload cannot be uploaded from any folder but only from a network share that contains read-only files written and authorized by administrators
Thanks in advance
No. And even if there was, how would you specify those paths for Windows/Mac/Linux systems. What about network attached volumes? You can only "suggest" mime-types/extensions and the file dialog is 100% up to the user.
No. That is not a feature that browsers provide.
Nor would it be one that makes much sense in the context of the WWW as local file paths are custom to different systems.
Related
I am new to web dev and currently building a very basic page using Html/CSS and JS where users can upload the image and I can download it in my local system. But by default images are getting downloaded in the 'download' section of my desktop and I want to save them to any specific folder. How can I add this functionality?
You can't.
You do not have access to other peoples file managers as that would be a major security risk.
Uhh... You can't manipulate the download folder from frontend. It may be a security risk.
This cannot be done by Javascript (otherwise we could all produce websites which saved files all over a user's local PC).
As the end user in this case you can go into your browser and tell it which folder to save downloads in by default. (And remember to change it back if you want any other downloads to go elsewhere).
Here for example is what I find on Edge on Windows10 when going into Settings>Downloads:
I am developing a website with frontend react and backend as django where users can generate names of files in a particular format. Now this files will be in their local system or their local servers we can say. I need to rename the file and move that to a source folder. Is that possible using a website? I have heard this is possible but now sure how. Anybody knows how this can be done?
Browsers accessing the local files system is considered as a security threat!
Imagine websites having the freedom to access all your files and images!
however for certain use-cases, this can be enabled on the browser itself, to enable websites from accessing file system.
however it is supported by google chrome only (as far as i know) you can use the FileSystem.API you can check this here Can i Use: FileSystem
I'm trying to develop HTML base editor equipped with browsing local files function.
I know basically that is restricted by browser to open local files.
However I found out some method doing this activity.
using path begin from "localexplorer://" it works perfect for English path name.
But when I use Japanese folder name or file name it becomes error.
I tried to convert SJIS format that file names but this is not work.
Here is code.
[![error[![\]\[1\]][1]][1]][1]url = 'localexplorer:' + event.target.innerText;
array = str2array(url);
sjis_array = Encoding.convert(array, "SJIS", "UNICODE");
sjis= Encoding.codeToString(sjis_array);
window.open(url, '_blank');
According to browser security, javascript is only allowed to run in the sandbox, you cannot read or write arbitrary files:
JavaScript and the DOM provide the potential for malicious authors to
deliver scripts to run on a client computer via the Web. Browser
authors minimize this risk using two restrictions. First, scripts run
in a sandbox in which they can only perform Web-related actions, not
general-purpose programming tasks like creating files.
If the user selects a file via <input type="file">, you could try to read the content of the file through FileReader API, like this case: How to open a local disk file with JavaScript?
If you need to interact with files on the user's local device or a user-accessible network file system, you can try to use the File System Access API. And this must be done in a secure context, and must be called from within a user gesture. You can also read this article to learn more about it：The File System Access API: simplifying access to local files.
Thank you for your response, I solved this issue by Forefox plug in extensions, it seems like chrome did not support this functions even if there is plug in extensions.
For a website I am working on, I need to allow users to be able to specify the path to a file on a network drive, so I simply tried using a file field and having javascript get the value, however because of browser security I cannot get this path.
Is there anyway to get around this browser security and allow users to browse to the file on the network drive and select it to specify the path?
Thanks,
Alex.
AFAIK this is impossible with javascript. Flash also forbids from accessing the client file paths. ActiveX could be used but it will work only in IE and must be installed on the client computer.
I need to have my user send the file path to the webserver. For this i'm trying to use input file type so that user can select the file. Please note that I don't want do uploading the file. I just need the location of some file. So user should be able to do that using browse option. I know that due to some security reasons in browsers, full path is not sent to server. But can we acheive this some way. I've observed that using input type=file after user selects some file using browse option (as it is not possible to select folder), the Firefox sends the server just the filename and IE sends fullpath of file including file name.
Please note that this website is used internally so it is not a security problem at all, so don't bother about security and all.
is there anyway we can acheive this?
Thanks in advance,
Sreed
You need to use something that has access to the filesystem. BY DESIGN javascript/html cannot do this. You need to use flash, java or a browser plug-in.
No, sadly I don't think there is.
All modern browsers will send a C:\Fakepath path. To my knowledge, this behaviour can not be changed for local networks in any browser.
I'm not sure what the state of things is for Flash-based uploaders like SWFUpload or Uploadify. Flash traditionally gives more control over such data than the native browser controls. (Edit: Uploadify seems to give you the file path. See this question: How can I get the uploaded file details from uploadify after completion however, this of course is after a completed upload, which is not what you want.)
A Java applet based solution will be able to do this, but I expect the effort to implement this is huge.
I would consider using a normal text file, and asking the user to just copy+paste the correct path.
Browsers do not let you save or even see the full file path to a selected file from the <input type="file" /> form element. I would recommend Flash or Java for your needs. You could also have the user manually type in the full path...just a thought.