add .gitignore

msext/QiniuSDK/Storage/QNUpToken.m

@@ -0,0 +1,73 @@
+//
+//  QNUpToken.m
+//  QiniuSDK
+//
+//  Created by bailong on 15/6/7.
+//  Copyright (c) 2015年 Qiniu. All rights reserved.
+//
+
+#import "QNUrlSafeBase64.h"
+#import "QNUpToken.h"
+
+@interface QNUpToken ()
+
+- (instancetype)init:(NSDictionary *)policy token:(NSString *)token;
+
+@end
+
+@implementation QNUpToken
+
+- (instancetype)init:(NSDictionary *)policy token:(NSString *)token {
+    if (self = [super init]) {
+        _token = token;
+        _access = [self getAccess];
+        _bucket = [self getBucket:policy];
+        _hasReturnUrl = (policy[@"returnUrl"] != nil);
+    }
+
+    return self;
+}
+
+- (NSString *)getAccess {
+
+    NSRange range = [_token rangeOfString:@":" options:NSCaseInsensitiveSearch];
+    return [_token substringToIndex:range.location];
+}
+
+- (NSString *)getBucket:(NSDictionary *)info {
+
+    NSString *scope = [info objectForKey:@"scope"];
+    if (!scope) {
+        return @"";
+    }
+
+    NSRange range = [scope rangeOfString:@":"];
+    if (range.location == NSNotFound) {
+        return scope;
+    }
+    return [scope substringToIndex:range.location];
+}
+
++ (instancetype)parse:(NSString *)token {
+    if (token == nil) {
+        return nil;
+    }
+    NSArray *array = [token componentsSeparatedByString:@":"];
+    if (array == nil || array.count != 3) {
+        return nil;
+    }
+
+    NSData *data = [QNUrlSafeBase64 decodeString:array[2]];
+    NSError *tmp = nil;
+    NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:&tmp];
+    if (tmp != nil || dict[@"scope"] == nil || dict[@"deadline"] == nil) {
+        return nil;
+    }
+    return [[QNUpToken alloc] init:dict token:token];
+}
+
+- (NSString *)index {
+    return [NSString stringWithFormat:@"%@:%@", _access, _bucket];
+}
+
+@end