validation username and password from server database in iphone - iphone

Question

hi friends i am doing here validation for username and password from server database
by given url of server i think i am going wrong i don't think my code is right
please some help me how to validation from server database for username and password in iphone
-(IBAction)buttonClick:(id)sender
{
NSString* username = nameInput.text;
NSString* pass = passInput.text;
if([nameInput.text isEqualToString:#"" ]&& [passInput.text isEqualToString:#""])
{
//greeting.text = #"Input Your Value";
//[nameInput resignFirstResponder];
//[passInput resignFirstResponder];
//return;
}
NSString *post =
[[NSString alloc] initWithFormat:#"uname=%# & pwd=%#",username,pass];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d", [postData length]];
NSURL *url = [NSURL URLWithString:#"http://server:85/VirtualTerminal/RecordAttendance.aspx"];//#"https://www.google.com/accounts/ServiceLogin?service=reader&passive=1209600&continue=http://www.google.co.in/reader/?hl%3Den%26tab%3Dwy&followup=http://www.google.co.in/reader/?hl%3Den%26tab%3Dwy&hl=en"]; //#"http://www.chakrainteractive.com/mob/iphone/login/chckusr.php"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
[theRequest setHTTPMethod:#"POST"];
[theRequest setValue:postLength forHTTPHeaderField:#"Content-Length"];
[theRequest setHTTPBody:postData];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if( theConnection )
{
webData = [[NSMutableData data] retain];
//test *t=[[test alloc]initWithNibName:#"test" bundle:nil];
//[self presentModalViewController:t animated:YES];
//[t release];
}
else
{
}
//}
[nameInput resignFirstResponder];
[passInput resignFirstResponder];
nameInput.text = nil;
passInput.text = nil;
k
[webData appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
[connection release];
[webData release];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSString *loginStatus = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding];
NSLog(#"loginStatus");
greeting.text = loginStatus;
[loginStatus release];
[connection release];
[webData release];
}

Answer 1

Try setting with the following HTTPHeaderFields.
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setValue:#"UTF-8" forHTTPHeaderField:#"charset"];
[request setValue:#"XMLHttpRequest" forHTTPHeaderField:#"X-Requested-With"];
I believe that the login call may be a "GET" method instead of "POST".
Once again confirm with the server URL that you make the call.
Thanks.

Answer 2

You can use this code:
-(IBAction)btnclick1:(id)sender
{
recordResult=FALSE;
greeting.text=#"Processing";
NSString *soapMessage=[NSString stringWithFormat:#" WEB SERVICE ",nameInput.text,passInput.text];
NSLog(#"%#",soapMessage);
NSURL *url=[NSURL URLWithString:#"http://SOME URL.asmx"];
NSMutableURLRequest *theRequest=[NSMutableURLRequest requestWithURL:url];
NSString *msgLength=[NSString stringWithFormat:#"%d",[soapMessage length]];
[theRequest addValue:#"text/xml; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
[theRequest addValue:#"http://tempuri.org/webservicename" forHTTPHeaderField:#"SOAPAction"];
[theRequest addValue:msgLength forHTTPHeaderField:#"Content-Length"];
[theRequest setHTTPMethod:#"POST"];
[theRequest setHTTPBody:[soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
NSURLConnection *theConnection=[[NSURLConnection alloc]initWithRequest:theRequest delegate:self];
[myActivity startAnimating];
if(theConnection)
{
webData=[[NSMutableData data]retain];
}
else
{
NSLog(#"theConnection is NULL");
}
[nameInpt resignFirstResponder];
[passinpt resignFirstResponder];
}
-----
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[webData setLength: 0];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[webData appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
NSLog(#"ERROR with theConenction");
[connection release];
[webData release];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSLog(#"DONE.Received Bytes:%d",[webData length]);
NSString *theXML =[[NSString alloc]initWithBytes:[webData mutableBytes]length:
[webData length] encoding:NSUTF8StringEncoding];
NSLog(#"%#",theXML);
[theXML release];
if(xmlParser)
{
[xmlParser release];
//xmlParser=nil;
}
xmlParser=[[NSXMLParser alloc]initWithData:webData];
[xmlParser setDelegate:self];
[xmlParser setShouldResolveExternalEntities:YES];
[xmlParser parse];
[myActivity stopAnimating];
[webData release];
//webData = nil;
[connection release];
}
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *) namespaceURI qualifiedName:(NSString *)qName
{
if([myTxt1.text isEqualToString:#"webservresult"])
{
if(!soapResult)
{
soapResult=[[NSMutableString alloc]init];
}
recordResult=TRUE;
}
}
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
if(recordResult)
{
[soapResult appendString:string];
}
}
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if([myTxt1.text isEqualToString:#"wsresult"])
{
recordResult=FALSE;
greeting.text=[NSString stringWithFormat:#"webservicename Result is:%#",soapResult];
[soapResult release];
soapResult=nil;
}
}
that's it.