My question is I know that a server application can access the data stored at server but cannot access teh data stored at client machine as this is a security issue and Browsers not allow this. But in case of localHost (when my local pc is acting as a server) I should be able to access the files from my PC(the local PC on which the application is running). But that is not happening.
Why i m not able to access a simple image file form my local C:\ drive by localhost. The URL i used was file:///c:/image.png but if i store this image any where under home directory of tomcat i m able to access it. WHY ??
I m using it as <'img src="file:///c:/image.png>
Thanks for any considerations..
The problem is with this part:
The URL i used was file:///c:/image.png but if i store this image any
where under home directory of tomcat i m able to access it.
If you want to access the file through Tomcat after placing it in Tomcat's document-root, then the URL to use (assuming you haven't changed the default port setting) is:
http://localhost:8080/image.png
Content hosted by the web-server needs to be accessed through the web-server. A file:// URL bypasses any sort of server, and basically directs the browser to look directly in the local filesystem. So it should also work if you were to do:
file:///C:/path/to/tomcat/home/image.png
But in that case you are not going through Tomcat. You're just pointing the browser at the tomcat folder in your local filesystem.
Edit: I don't think many browsers will not allow file:// urls in tags in hosted documents. Doing so could cause the appearance of a security hole, as if you could guess the name of an image file on someone's local filesystem you could then post a webpage that made it appear as if your server had somehow grabbed their personal image file.
Related
I'm an high school student and I'm working on something for fun. I've linked a local file stored on my computer to my webpage. What can I do to make it possible for other devices to access the local html file? (meme1.html)
<div id="button">
<a href="C:\Users\Desktop\MEME GENERATOR\meme1.html">
<img src="https://openclipart.org/image/2400px/svg_to_png/140365/1306313012.png" alt="Click here!" height="20%" width="20%"></a>
</div>
<div id="wrapper">
<h1><span class="tight-2">Happy Birthday!</h1>
<h2>Go ahead, press the button to generate memes!<span class="tm">™</span>.</h2>
</div>
Basically, when you host the site online you have to change the linked file path to the one of the server instead of your local machine.
Edit: If youre using plain HTML my answer stands, if you use a backend platform like Django, Flask or dotNet Core then the urls are dynamicly stated in your webapp.
By default, the local file is only available to the system it resides on. For instance this link you've created:
<a href="C:\Users\Desktop\MEME GENERATOR\meme1.html">
is telling the browser to look in the C: drive of the machine it's currently installed on. Every other system in your network (and the world, for that matter) will likely not be to pull that file because MEME GENERATOR isn't a folder on their system, so they will see a 404 (file not found) error.
That said, you can load links within your network by using network addresses. This will be the machine's network IP address, typically starting with 192.168.
That said, in order to load the file, the machine that it is running on will need to have a port open for the client machine's browser to connect to. This is typically port 80, unless SSL is in use, in which case it's typically port 8080, for HTTP traffic.
In doing so, the computer that is serving up the files becomes, logically, a 'server'. And this is the core of the client (user) to server relationship that the whole of the internet and networking is built upon.
Since you're on Windows, you can use something like XAMPP or WAMP to run a server locally that will have Apache installed, which can serve files through these ports. You're going to need to read up on these technologies a lot to get a file going, and be forewarned that this will open your system to hacking and the like.
EDIT: rereading your question, you are maybe trying to get this file to load on your website? If this is the case, then you need to upload the file to your website, and then it will have a folder structure similar to a local Windows file. [YOUR.DOMAIN.COM]/[whatever folder you create on your server in the public directory]/meme1.html
Do you mean? That you want other people to access your website?
Few ways to do that.
One thing you could do is to send the whole directory to the individual to who you want to send the webpage to.
Or the other way is what you can do is host the webpage on a hosting website. There are a lot of hosting websites that would host your websites for free.
That way anyone with a given URL can access the website.
setting username and password for Apache localhost. I want to be able to upload files using FTP protocal through the localhost, which means the localhost needs a username and password to enter. I am trying to test everything before I subscribe to a web server.
I have Apache 2.4 and PHP 7 installed on my windows 10 computer (no tomcat, no sql server or anything else). Using an html IDE I have written an index.html and other related files (css, php, js) and copied them (using windows) into the C:/Apache24/htdocs folder. I open a browser and type in localhost/index.html and everything is nicely displayed. But I won't be able to copy files to a subscribed server without knowing its username and password and connecting to it first.
I have read at least 50 discussions on Stack Overflow, Code Project and others but none of them address setting username and password without tomcat or sql server or something else.
As an aside, I was successful in password protecting a folder inside of htdocs using .htaccess and .htpasswd. I had trouble initially because I was missing the required Microsoft Visual C++ Redistributable(64) file.
Apache is a HTTP server! So you can't access it via FTP.
If you need to upload files you should create a form and coding server-side script in order to make upload in a subfolder of your apache root.
I'm new to programming generally. I have typed my css and html codes and saved in a folder. How do i upload this site to a host server. Thanks
Welcome.
To upload the files to your hosted server, you would need to use a FTP program ( File Transfer Protocol). A good free one to use would be filezilla, which a quick google search will come up for you.
Once you have downloaded filezilla you will need your server FTP settings, which you can find on your Hosted servers control panel. (They generally get you to create a username and password) you would need the FTP setting and Port with your login details, to be able to log in and start uploading your files.
One thing to be careful of, is the URL links for images/pages etc, as they may be different than if they were on your local machine.
You can use FTP (file transfer protocol) to achieve this. Download a free FTP client such as FileZilla, input your hostname and login information, and then you simply navigate to your desired server location and drag and drop.
You can read more about FTP here
https://en.m.wikipedia.org/wiki/File_Transfer_Protocol
Usually we have FTP (file transfer protocol) to send data to the server.
Softwares like Filezilla, for example, can connect and handle server's directories and files the way you want.
Anyway, you need to check the available services with your hosting service.
I'm trying to make a simple four page website, all HTML with some CSS and images. This is my first site. After I'm done building the HTML documents, what do I need to upload them and get the site running?
In order to put up a website, you need a web hosting provider. So the first thing you need is a hosting provider. Make sure that your provider offers FTP access to your website. You will need to contact your hosting provider (http://webdesign.about.com/od/webhosting/f/blfaqwebhosting.htm) if you aren't sure.
Once you have a hosting provider, in order to connect by FTP you need some specific information:
your username
password
the host name or URL where you should upload files
your URL or web address (especially if it's different from the host name
You can get this information from your hosting provider if you aren't sure what it is.
Make sure your computer is connected to the internet and that your WiFi is working.
Open an FTP client. As I mentioned above, most computers come with a built-in FTP client, but these tend to be fairly hard to use. It's better to use a visual style editor so you can drag and drop your files from your hard drive to your hosting provider.
Best FTP Clients for Windows
Best FTP Clients for Macintosh
Following the instructions for your client, put in your host name or the URL where you should upload your files.
If you try to connect to your hosting provider, you should be prompted for a username and password. Enter them in.
Switch to the correct directory on your hosting provider.
Select the file or files you want to load onto your website, and drag them to the hosting provider pane in your FTP client.
Visit the website to verify that your files uploaded correctly.
Tips:
Don't forget to transfer images and other multimedia files that are associated with your website, and put them in the correct directories.
It can often be easiest to just select the entire folder and upload all the files and directories at once. Especially if you have fewer than 100 files.
What You Need
FTP client
check this out http://webdesign.about.com/cs/beginninghtml/ht/htupload.htm i hope this could help you
I have a web page that is hosted in our local network. On my page I have a link to a document. The document is linked to a network share. If the user opens the file, edits it and then goes to save the file it overwrites what is on the share. When opening the file I want the user to download the file, so when they come to save it they do not have the option to save it back. How could I go about doing this?
Server side I have access to asp.
You need to create a link which when clicked, streams the contents of the file to the browser, rather than having a link to the files actual location. If you do this the user will be prompted to save the file somewhere locally.
I am not at my PC currently so cannot get you an example piece of code, but you need to send the response with the content type set appropriately. Look in to mime types for a pointer in the right direction.
The term "download" is misunderstood here. When we open windows explorer and copy a file from a network share to our local machine don't think it terms of "downloading" it, we are just copying it. To "download" usually refers to access some resource outside of our local network and pulling that resource into that network.
Hence to achieve your aim you need to convince the client that is not accessing a file that is a local network resource. You can do this by adding a Virtual Folder to the IIS site that points the appropriate folder in the network share. Change the URL to use a "http:" protocal pointing at the virtual folder in your site.
Now the users will get the file from your website rather than accessing it as a normal file on the network.
You can stream the file through a webpage to download the file instead of opening a network share.
See this for an example:
http://support.microsoft.com/kb/276488
You can also share a directory through your web server by enabling directory browsing.
IIS 6: http://blog.crowe.co.nz/archive/2006/03/18/603.aspx
IIS 7: http://technet.microsoft.com/en-us/library/cc731109(WS.10).aspx