I am putting together a string with certain content, that is set as an HTTP header field of NSMutableURLRequest:
NSString *authenticationHeaderString = [NSString stringWithFormat:#"OAuth oauth_callback=\"%#\", oauth_nonce=\"%#\", oauth_signature_method=\"HMAC-SHA1\", oauth_timestamp=\"%#\", oauth_consumer_key=\"xxxxxxxxx\", oauth_signature=\"%#\", oauth_version=\"1.0\"", [callbackURLString URLEncodedString], nonce, timestampString, [BYOAuthSignatureString signatureStringWithParameters:signingParams URL:[mURLRequest.URL absoluteString] HTTPMethod:mURLRequest.HTTPMethod]];
NSLog(#"authenticationHeaderString: %#", authenticationHeaderString);
[mURLRequest setValue:[NSString stringWithFormat:#"%#", authenticationHeaderString] forHTTPHeaderField:#"Authorization"];
NSLog(#"header:%#", mURLRequest.allHTTPHeaderFields);
In the header field the \" is not converted into "
authenticationHeaderString: OAuth oauth_callback="http%3A%2F%2Fbytolution.com", oauth_nonce="o7QNfKOMBKtdZQmJrbV9QWqVwUkkRK1ABbjfK4hWTQ", oauth_signature_method="HMAC-SHA1", oauth_timestamp="1361735323", oauth_consumer_key="xxxxxxxxxxx", oauth_signature="koNYscKJx3WwC7M4kHsrMpfzYoo=", oauth_version="1.0"
header:{
Authorization = "OAuth oauth_callback=\"http%3A%2F%2Fbytolution.com\", oauth_nonce=\"o7QNfKOMBKtdZQmJrbV9QWqVwUkkRK1ABbjfK4hWTQ\", oauth_signature_method=\"HMAC-SHA1\", oauth_timestamp=\"1361735323\", oauth_consumer_key=\"xxxxxxxxxxxx\", oauth_signature=\"koNYscKJx3WwC7M4kHsrMpfzYoo=\", oauth_version=\"1.0\"";
}
Why is that?
This is just the way that the NSDictionary mURLRequest.allHTTPHeaderFields is printing itself. Whenever NSDictionaries print their contents they double-quote any strings that include a space. They also escape any double-quotes in the string, among other things.
The string has not been changed. You can verify this by doing
NSLog(#"authHeader: %#", [mURLRequest.allHTTPHeaderFields objectForKey: #"Authorization"]);
It is converted... But then it is converted back for displaying.
Your header should be fine, just it is displayed as a string for logging.
Related
I wants to remove specific characters or group substring from NSString.
mean
NSString *str = #" hello I am #39;doing Parsing So $#39;I get many symbols in &my response";
I wants remove #39; and $#39; and & (Mostly these three strings comes in response)
output should be : hello I am doing Parsing So i get many symbols in my response
Side Question : I can't write & #39; without space here, because it converted in ' <-- this symbol. so i use $ in place of & in my question.
you should use [str stringByReplacingOccurrencesOfString:#"#39" withString:#""]
or you need replace strings of concrete format like "#number"?
try below code ,i think you got whatever you want simply change the charecterset,
NSString *string = #"hello I am #39;doing Parsing So $#39;I get many symbols in &my response";
NSCharacterSet *trim = [NSCharacterSet characterSetWithCharactersInString:#"#39;$&"];
NSString *result = [[string componentsSeparatedByCharactersInSet:trim] componentsJoinedByString:#""];
NSLog(#"%#", result);
I am getting html content as a string in my webservice response which contains " " in it. When I display that data in webview, " " is converted in junk character. Please let me know how to solve it.
You have to read the string as NSUTF8 encoded string and then pass the string to web view using "loadHTML" method mentioned in UIWebView.
Not only that, if you want to display special characters like copy right, double quotes etc or other language characters in the HTML, you have to use UTF8 encoding.
Use the stringByReplacingPercentEscapesUsingEncoding: method of NSString
like :
NSString *decoded = [yourString stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
Also to remove use
[yourString stringByReplacingOccurrencesOfString:#" " withString:#" "];
stringByReplacingOccurrencesOfString is deprecated from ios 9
let decoded = yourString.stringByAddingPercentEncodingWithAllowedCharacters(.URLHostAllowedCharacterSet())
I'm sending a request from my iphone-application, where some of the arguments are text that the user can enter into textboxes. Therefore, I need to HTML-encode them.
Here's the problem I'm running into:
NSLog(#"%#", testText); // Test & ?
testText = [testText stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSLog(#"%#", testText); // Test%20&%20?
As you can see, only the spaces are encoded, making the server disregard everything past the ampersand for the argument.
Is this the advertised behaviour of stringByAddingPercentEscapes? Do I have to manually replace every special character with corresponding hex code?
Thankful for any contributions.
They are not encoded because they are valid URL characters.
The documentation for stringByAddingPercentEscapesUsingEncoding: says
See CFURLCreateStringByAddingPercentEscapes for more complex transformations.
I encode my query string parameters using the following method (added to a NSString category)
- (NSString *)urlEncodedString {
CFStringRef buffer = CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,
(CFStringRef)self,
NULL,
CFSTR("!*'();:#&=+$,/?%#[]"),
kCFStringEncodingUTF8);
NSString *result = [NSString stringWithString:(NSString *)buffer];
CFRelease(buffer);
return result;
}
I need to encode the body of my POST request but I don´t know which one to use.
I´m having a trouble with changing ´(´ into %28.
I was using so far NSUTF8StringEncoding, NSISOLatin1StringEncoding, NSISOLatin2StringEncoding. Non of them works.
The name of the parameter I have to send is:
monitoring_report[monitoring_report_time(1i)]=
which sould be transformed to:
monitoring_report%5monitoring_report_time%281i%29%5D=
and what I get is:
monitoring_report%5Bmonitoring_report_time(1i)%5D=
Use the Core Foundation function CFURLCreateStringByAddingPercentEscapes which has a legalURLCharactersToBeEscaped parameter. Parenthesis in URLs are legal which is why they're not escaped by default.
Example:
NSString *input = #"monitoring_report[monitoring_report_time(1i)]=";
NSString *output = [(NSString *)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (CFStringRef)input, NULL, CFSTR("()"), kCFStringEncodingUTF8) autorelease];
NSLog(#"%#", output); // monitoring_report%5Bmonitoring_report_time%281i%29%5D=
I'd like to make a URL click able in the email app. The problem is that a parameterized URL breaks this because of "&" in the URL. The body variable below is the problem line. Both versions of "body" are incorrect. Once the email app opens, text stops at "...link:". What is needed to encode the ampersand?
NSString *subject = #"This is a test";
NSString *encodedSubject =
[subject stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
//NSString *body = #"This is a link: <a href='http://somewhere.com/two.woa/wa?id=000¶m=0'>click me</a>"; //original
NSString *body = #"This is a link: <a href='http://somewhere.com/two.woa/wa?id=000¶m=0'>click me</a>"; //have also tried &
NSString *encodedBody =
[body stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString *formattedURL = [NSString stringWithFormat: #"mailto:myname#somedomain.com?subject=%#&body=%#", encodedSubject, encodedBody];
NSURL *url = [[NSURL alloc] initWithString:formattedURL];
[[UIApplication sharedApplication] openURL:url];
the ampersand would be %26 for HEX in URL Encoding standards
I've been using -[NSString gtm_stringByEscapingForURLArgument], which is provided in Google Toolbox for Mac, specifically in GTMNSString+URLArguments.h and GTMNSString+URLArguments.m.
You can use a hex representation of the character, in this case %26.
you can simply use CFURLCreateStringByAddingPercentEscapes with CFBridgingRelease for ARC support
NSString *subject = #"This is a test";
// Encode all the reserved characters, per RFC 3986
// (<http://www.ietf.org/rfc/rfc3986.txt>)
NSString *encodedSubject =
(NSString *) CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,
(CFStringRef)subject,
NULL,
(CFStringRef)#"!*'();:#&=+$,/?%#[]",
kCFStringEncodingUTF8));
You use stringByAddingPercentEscapesUsingEncoding, exactly like you are doing.
The problem is that you aren't using it enough. The format into which you're inserting the encoded body also has an ampersand, which you have not encoded. Tack the unencoded string onto it instead, and encode them (using stringByAddingPercentEscapesUsingEncoding) together.
<a href='http://somewhere.com/two.woa/wa?id=000¶m=0'>click me</a>
Is correct, although ‘&’ is more commonly used than ‘&’ or ‘,’.
If the ‘stringByAddingPercentEscapesUsingEncoding’ method does what it says on the tin, it should work(*), but the NSString documentation looks a bit unclear on which characters exactly are escaped. Check what you are ending up with, the URL should be something like:
mailto:bob#example.com?subject=test&body=Link%3A%3Ca%20href%3D%22http%3A//example.com/script%3Fp1%3Da%26amp%3Bp2%3Db%22%3Elink%3C/a%3E
(*: modulo the usual disclaimer that mailto: link parameters like ‘subject’ and ‘body’ are non-standard, will fail in many situations, and should generally be avoided.)
Once the email app opens, text stops at "...link:".
If ‘stringByAddingPercentEscapesUsingEncoding’ is not escaping ‘<’ to ‘%3C’, that could be the problem. Otherwise, it might not be anything to do with escapes, but a deliberate mailer-level restriction to disallow ‘<’. As previously mentioned, ?body=... is not a reliable feature.
In any case, you shouldn't expect the mailer to recognise the HTML and try to send an HTML mail; very few will do that.
Example of use of %26 instead of & without this attributes arrived in PHP as an array!
var urlb='/tools/lister.php?type=101%26ID='+ID; // %26 instead of &
window.location.href=urlb;