Upload File and Mime Types

Upload File and Mime Types

rbwhitaker 11 Dec 2013 15:04

So I was just playing around with the XML-RPC API and tried to upload files. This worked great, and I can see that the file I wanted to upload was indeed uploaded.

But there was a problem. It uploaded with some sort of "ISO-8859 text" MIME type. I wouldn't care what the MIME type was, except that this is an image that needs to be displayed on the page, and this isn't a MIME type that works for displaying images. I manually deleted the file and manually uploaded it. This time, I got the image/png ("PNG image data") MIME type, and now my file is visible.

When you get file metadata, you can see the MIME type associated with a file. Why can't you set the MIME type on upload, or why isn't Wikidot smart enough to figure this out? (After all, when you do a manual file upload, it can figure it out.)

Am I just missing something?

Re: Upload File and Mime Types

rbwhitaker 12 Dec 2013 17:48

I know this forum is a little slow paced at times. I just wanted to bump this thread again. Anyone else out there ever use the API to upload files successfully?

Re: Upload File and Mime Types

TeRq 12 Dec 2013 18:21

I will check it ASAP.

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Bartłomiej Bąkowski @ Wikidot Inc.
';.;' TeRq (Write PM)

Re: Upload File and Mime Types

rbwhitaker 12 Dec 2013 23:14

Thanks, TeRq. I look forward to hearing what you discover.

Re: Upload File and Mime Types

TeRq 17 Dec 2013 12:37

It should be fixed now, please check.

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Bartłomiej Bąkowski @ Wikidot Inc.
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Re: Upload File and Mime Types

rbwhitaker 17 Dec 2013 15:24

It doesn't seem like the mime type is working yet, though it used to be that I'd get an exception if I tried to set it, and now I don't. So perhaps something has changed. It still shows up as "ISO-8859 text".

But I'm running into another problem that might be the underlying cause of this. The file I transmit is 20K, while the size that Wikidot reports is 2 bytes. Clearly something is getting lost somehow. The data is all encrypted because it is sent over HTTPS, but I watched it with WireShark and I'm definitely sending over lots more than two bytes for a file upload.

Do you have any insight into why only two bytes get over there? Could it possibly have something to do with network byte order or anything? I think I remember seeing similar issues when I tried to download a file through the API as well, but I'd have to double-check on that to be sure.

Can you point me to any sample code (in any language—I should be able to figure it, I think) that uses the API to upload or download files?

Bottom line: I don't get an exception when I set a "mime_type" property, but my file still isn't getting transferred over correctly and still only shows up with the ISO-8859 Text mime type, but it may be caused by a different problem in file uploading…

Re: Upload File and Mime Types

TeRq 17 Dec 2013 20:25

Could you send me this file to test, or give me a link when I can download it ?

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Bartłomiej Bąkowski @ Wikidot Inc.
';.;' TeRq (Write PM)

Re: Upload File and Mime Types

rbwhitaker 18 Dec 2013 22:13

Sorry, TeRq. I missed this post somehow. I'll be working on this again in a few hours so I can post a link to the file then. But I don't think there's anything special about the file (it's just a PNG image) and it seems like none of the files I've tried have actually uploaded correctly, regardless of format. I think it's something in the way I'm sending it, or perhaps something screwy on the backend.

Which is why I was hoping somebody could point me in the direction of some code (in any language) that is known to successfully upload files through the API. Do you know where any examples like that might be?

But yeah, aside from seeing some other sample code, I can definitely send the file your way.

Re: Upload File and Mime Types

rbwhitaker 02 Jan 2014 22:35

I just wanted to follow up with this, because I got it to work. I'm building a C#-based library to access Wikidot, and I was unable to upload files for some reason. All I'd get instead is some generic "ISO-8859 text" format, and a file size of two bytes, but the problem was on my end, not Wikidot's.

Basically, I was sending the raw bytes. Something like this:

byte[] fileContents = File.ReadAllBytes(localPath);

What I needed to send instead was this:

string fileContents = Convert.ToBase64String(File.ReadAllBytes(localPath));

I was able to figure this out by revisiting the documentation, which pretty clearly states that it must be base64 encoding.

Thanks TeRq for helping me look into this!

Re: Upload File and Mime Types

Ed Johnson 03 Jan 2014 03:28

Is there any chance you'll be sharing your C# library when you get it finished? I know enough about C# to get into deep trouble and made an attempt to dust off some old skills and tried to track down an existing XML-RPC library so I could use the API with a desktop application. After failing miserably, I gave up and went the PHP route since others were having some success there.

I'm very interested in developing an app that I can distribute to my shops that can interact with our wiki site in the background to pull in current information from various pages we update regularly and then merge that with shop-specific data before pushing some data back to the wiki (I work for a restaurant company and have several remote sites that could benefit from this).

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Re: Upload File and Mime Types

rbwhitaker 03 Jan 2014 14:17

Yeah, Ed, I think I'm going to post it online so others can use it. Or at least the parts of it that will make sense for a broader audience beyond just me. (The layer that goes through the Wikidot XML-RPC bindings.)