Detect phonegap user agent on the server side and forbid non-phonegap downloads

[Gavriel Fleischer]

I am building a mobile app with PhoneGap and it will download a file from my server, where I have php. I am looking for a way to differentiate between my phonegap app and "every other browser" from the php. I know how to look for user agent string in php, my question is if there's a string (like "PhoneGap") that I'll have in the user agent on every platform (android, iphone, etc) or if there's a way to tell PhoneGap to use my custom user agent string.

Optionally if there's an idea what could I do in order to serve these files when the PhoneGap FileTransfer asks for them, but not when another browser does, is welcome. I don't want to force the users to create an account if there's another way.

[Kerri Shotts]

By default, the user agent string is the one generated by the webview, so I doubt you'll be able to see a difference. However, I do know that iOS browsers do permit changing agent strings, but I don't know if they do it by going out of the webview somehow (and then putting the contents inside the webview) or if they somehow convince the webview to change its agent string. Either way, you're probably going to have to write a plugin or do some ObjC for iOS. If I had to guess, I'd say the same would tend to apply for any platform.

[Jonhnatha Trigueiro]

Hi there!

Did you try to make the request to your php using a kind of token? For example, you could, into device, get the page sending a post var named token with a code. Your php would recognize it and grant access.

Regards,

Jonhnatha J. R. Trigueiro

+55 84 8888 4224

+55 83 9634 4224

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From iPhone

On 07/05/2012, at 05:14 PM, Gavriel Fleischer <gavr...@gmail.com> wrote:

I am building a mobile app with PhoneGap and it will download a file from my server, where I have php. I am looking for a way to differentiate between my phonegap app and "every other browser" from the php. I know how to look for user agent string in php, my question is if there's a string (like "PhoneGap") that I'll have in the user agent on every platform (android, iphone, etc) or if there's a way to tell PhoneGap to use my custom user agent string.

Optionally if there's an idea what could I do in order to serve these files when the PhoneGap FileTransfer asks for them, but not when another browser does, is welcome. I don't want to force the users to create an account if there's another way.

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[Shane MacPhillamy]

In CDVViewController -- this works for me:

+ (void)initialize {

    NSString *systemVersionString = [[[UIDevice currentDevice] systemVersion] stringByReplacingOccurrencesOfString:@"." withString:@"_"];

    NSDictionary *webkitDictionary = [NSDictionary dictionaryWithObjectsAndKeys:

                                      @"533.17.9", @"4_3_2", 

                                      @"534.46", @"5_0",

                                      @"534.46", @"5_0_1",

                                      nil, nil];

    NSString *webkitVersionString = nil;

    if ((webkitVersionString = [webkitDictionary objectForKey:systemVersionString]) == nil) {

        webkitVersionString = [webkitDictionary objectForKey:@"4_3_2"];

    }

    

    NSString *uaString = [NSString stringWithFormat:@"Mozilla/5.0 (%@; CPU OS %@ like Mac OS X) AppleWebKit/%@ (KHTML, like Gecko) Mobile/9A334 MyString/%@",

                          [[UIDevice currentDevice] model],

                          systemVersionString,

                          webkitVersionString,

                          SYMBOL_TO_NSSTRING(PG_VERSION)];

    

    NSLog(@"UA = %@", uaString);

    // Set user agent (the only problem is that we can't modify the User-Agent later in the program)

    NSDictionary *dictionary = [[NSDictionary alloc] initWithObjectsAndKeys:uaString, @"UserAgent", nil];

    [[NSUserDefaults standardUserDefaults] registerDefaults:dictionary];

    [dictionary release];