Comments on: iTunes U. Authentication Gotchas http://www.alterzone.net/blog/2007/12/16/itunes-u-authentication-gotchas/ Where the Future Never Looks the Same Way Twice Fri, 22 Aug 2008 02:03:50 +0000 http://wordpress.org/?v=2.6.1 By: Stephen Tolton http://www.alterzone.net/blog/2007/12/16/itunes-u-authentication-gotchas/#comment-3982 Stephen Tolton Mon, 04 Aug 2008 21:07:07 +0000 http://www.alterzone.net/blog/2007/12/17/itunes-u-authentication-gotchas/#comment-3982 <p>Phatency,</p> <p>Thanks for that simple fix. I'll update the function the next time I get into that code base.</p> <p>That function was written very quickly, to fix a very specific issue, and even though it is very simple, it is not perfect. It just shows that even very simple functions can contain bugs or have room for optimization and that the original programmer may not even see it. That is basically an argument for open source development practices, right there.</p> Phatency,

Thanks for that simple fix. I’ll update the function the next time I get into that code base.

That function was written very quickly, to fix a very specific issue, and even though it is very simple, it is not perfect. It just shows that even very simple functions can contain bugs or have room for optimization and that the original programmer may not even see it. That is basically an argument for open source development practices, right there.

]]> By: Phatency http://www.alterzone.net/blog/2007/12/16/itunes-u-authentication-gotchas/#comment-3981 Phatency Mon, 04 Aug 2008 20:13:23 +0000 http://www.alterzone.net/blog/2007/12/17/itunes-u-authentication-gotchas/#comment-3981 <p>Oh, by the way, there is no "letter part" in url encoded characters, they are both hexadecimal numerals. For example, scandinavian letter Ä is %C4, which your function wouldn't encode properly. There's no need for checking if the character is numeral or letter either, Char.ToUpper returns the original value if it's a numeral. Sufficient simple change: if (s[i] == '%') { s[i + 1] = Char.ToUpper(s[i + 1]); s[1 + 2] = Char.ToUpper(s[i + 2]); }</p> Oh, by the way, there is no “letter part” in url encoded characters, they are both hexadecimal numerals. For example, scandinavian letter Ä is %C4, which your function wouldn’t encode properly. There’s no need for checking if the character is numeral or letter either, Char.ToUpper returns the original value if it’s a numeral. Sufficient simple change: if (s[i] == ‘%’) { s[i + 1] = Char.ToUpper(s[i + 1]); s[1 + 2] = Char.ToUpper(s[i + 2]); }

]]> By: Stephen Tolton http://www.alterzone.net/blog/2007/12/16/itunes-u-authentication-gotchas/#comment-3980 Stephen Tolton Mon, 04 Aug 2008 19:57:20 +0000 http://www.alterzone.net/blog/2007/12/17/itunes-u-authentication-gotchas/#comment-3980 <p>Phatency,</p> <p>This problem seems to happen a lot. There is a similar ParameterEncode() method in the RestChess OAuth source code.</p> Phatency,

This problem seems to happen a lot. There is a similar ParameterEncode() method in the RestChess OAuth source code.

]]> By: Phatency http://www.alterzone.net/blog/2007/12/16/itunes-u-authentication-gotchas/#comment-3979 Phatency Mon, 04 Aug 2008 19:48:15 +0000 http://www.alterzone.net/blog/2007/12/17/itunes-u-authentication-gotchas/#comment-3979 <p>Thanks for the FixUrlEncoding function, I had the exact same problem (not with iTunes).</p> Thanks for the FixUrlEncoding function, I had the exact same problem (not with iTunes).

]]> By: Jesse Baker http://www.alterzone.net/blog/2007/12/16/itunes-u-authentication-gotchas/#comment-3939 Jesse Baker Mon, 31 Mar 2008 03:36:04 +0000 http://www.alterzone.net/blog/2007/12/17/itunes-u-authentication-gotchas/#comment-3939 <p>That's great thanks.</p> <p>You mention UTC it in number 3, but I'd glossed over it because I knew how to generate a timestamp in unix format. So of course I was sending local time.</p> That’s great thanks.

You mention UTC it in number 3, but I’d glossed over it because I knew how to generate a timestamp in unix format. So of course I was sending local time.

]]> By: Peter Waite http://www.alterzone.net/blog/2007/12/16/itunes-u-authentication-gotchas/#comment-3911 Peter Waite Fri, 25 Jan 2008 21:25:23 +0000 http://www.alterzone.net/blog/2007/12/17/itunes-u-authentication-gotchas/#comment-3911 <p>Thanks, this is helpful. I'm not an expert at porting the code from Java, can you send me a copy of the entire C# script? Thanks!</p> Thanks, this is helpful. I’m not an expert at porting the code from Java, can you send me a copy of the entire C# script? Thanks!

]]> By: Stephen Tolton http://www.alterzone.net/blog/2007/12/16/itunes-u-authentication-gotchas/#comment-3906 Stephen Tolton Fri, 04 Jan 2008 16:15:35 +0000 http://www.alterzone.net/blog/2007/12/17/itunes-u-authentication-gotchas/#comment-3906 <p>Thanks. I'm glad someone found it useful.</p> Thanks. I’m glad someone found it useful.

]]> By: Brian Dishaw http://www.alterzone.net/blog/2007/12/16/itunes-u-authentication-gotchas/#comment-3905 Brian Dishaw Thu, 03 Jan 2008 16:25:48 +0000 http://www.alterzone.net/blog/2007/12/17/itunes-u-authentication-gotchas/#comment-3905 <p>This post was a life saver. Their documentation was lacking and it was taking a long time to figure out what exactly all the gotchas were.</p> <p>Thank you so much for posting this!</p> This post was a life saver. Their documentation was lacking and it was taking a long time to figure out what exactly all the gotchas were.

Thank you so much for posting this!

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