[java]
#import "Utility.h"
@implementation Utility
+(NSString *)createMD5:(NSString *)signString
{
const char*cStr =[signString UTF8String];
unsigned char result[16];
CC_MD5(cStr, strlen(cStr), result);
return[NSString stringWithFormat:
@"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
result[0], result[1], result[2], result[3],
result[4], result[5], result[6], result[7],
result[8], result[9], result[10], result[11],
result[12], result[13], result[14], result[15]
];
}
+(NSString *)createPostURL:(NSMutableDictionary *)params
{
NSString *postString=@"";
for(NSString *key in [params allKeys])
{
NSString *value=[params objectForKey:key];
postString=[postString stringByAppendingFormat:@"%@=%@&",key,value];
}
if([postString length]>1)
{
postString=[postString substringToIndex:[postString length]-1];
}
return postString;
}
+(NSString *)getCurrentDate
{
NSDateFormatter *dateFormatter=[[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
return [dateFormatter stringFromDate:[NSDate date]];
}
+(BOOL) connectedToNetwork
{
// Create zero addy
struct sockaddr_in zeroAddress;
bzero(&zeroAddress, sizeof(zeroAddress));
zeroAddress.sin_len = sizeof(zeroAddress);
zeroAddress.sin_family = AF_INET;
// Recover reachability flags
SCNetworkReachabilityRef defaultRouteReachability = SCNetworkReachabilityCreateWithAddress(NULL, (struct sockaddr *)&zeroAddress);
SCNetworkReachabilityFlags flags;
BOOL didRetrieveFlags = SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags);
CFRelease(defaultRouteReachability);
if (!didRetrieveFlags)
{
printf("Error. Could not recover network reachability flags\n");
return NO;
}
BOOL isReachable = ((flags & kSCNetworkFlagsReachable) != 0);
BOOL needsConnection = ((flags & kSCNetworkFlagsConnectionRequired) != 0);
return (isReachable && !needsConnection) ? YES : NO;
}
// Direct from Apple. Thank you Apple
+ (BOOL)addressFromString:(NSString *)IPAddress address:(struct sockaddr_in *)address
{
if (!IPAddress || ![IPAddress length]) return NO;
memset((char *) address, sizeof(struct sockaddr_in), 0);
address->sin_family = AF_INET;
address->sin_len = sizeof(struct sockaddr_in);
int conversionResult = inet_aton([IPAddress UTF8String], &address->sin_addr);
if (conversionResult == 0) {
NSAssert1(conversionResult != 1, @"Failed to convert the IP address string into a sockaddr_in: %@", IPAddress);
return NO;
}
return YES;
}
+ (NSString *) getIPAddressForHost: (NSString *) theHost
{
theHost=[theHost substringFromIndex:7];
//NSLog(@"%@",theHost);
struct hostent *host = gethostbyname([theHost UTF8String]);
if (!host) {herror("resolv"); return NULL; }
struct in_addr **list = (struct in_addr **)host->h_addr_list;
NSString *addressString = [NSString stringWithCString:inet_ntoa(*list[0]) encoding:NSUTF8StringEncoding];
return addressString;
}
+ (BOOL) hostAvailable: (NSString *) theHost
{
NSString *addressString = [self getIPAddressForHost:theHost];
if (!addressString)
{
printf("Error recovering IP address from host name\n");
return NO;
}
struct sockaddr_in address;
BOOL gotAddress = [self addressFromString:addressString address:&address];
if (!gotAddress)
{
printf("Error recovering sockaddr address from %s\n", [addressString UTF8String]);
return NO;
}
SCNetworkReachabilityRef defaultRouteReachability = SCNetworkReachabilityCreateWithAddress(NULL, (struct sockaddr *)&address);
SCNetworkReachabilityFlags flags;
BOOL didRetrieveFlags =SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags);
CFRelease(defaultRouteReachability);
if (!didRetrieveFlags)
{
printf("Error. Could not recover network reachability flags\n");
return NO;
}
