导入airkiss获取mac

2023-08-15 20:26:29 +08:00
parent fb139ab149
commit a27efea1f6
8 changed files with 627 additions and 2 deletions
@@ -0,0 +1,199 @@
+//
+//  JMAirKissEncoder.m
+//  UdpEchoClient
+//
+//  Created by shengxiao on 16/2/27.
+//
+//
+
+#import "JMAirKissEncoder.h"
+
+#define kRandomChar  arc4random() % 127
+
+@interface JMAirKissEncoder()
+{
+    NSMutableArray *_mEncodedDatas;
+    UInt8          _mRandomChar;
+}
+@end
+
+@implementation JMAirKissEncoder
+
+- (instancetype)init {
+    self = [super init];
+    if (self) {
+        _mEncodedDatas = [NSMutableArray array];
+    }
+    
+    return self;
+}
+
+/**
+ *  创建AirKiss数据
+ *
+ *  @param ssid <#ssid description#>
+ *  @param psd  <#psd description#>
+ *
+ *  @return 装载要发送的每条数据的长度的数组
+ */
+- (NSMutableArray *)createAirKissEncorderWithSSID:(NSString *)ssid
+                                         password:(NSString *)password {
+    [_mEncodedDatas removeAllObjects];
+    int times      = 5;
+    _mRandomChar   = kRandomChar;
+
+    while (times-- > 0) {
+        [self getLeadingPart];
+        [self getMagicCodeWithSSID:ssid
+                          password:password];
+        
+        for (int i = 0; i < 15; i++) {
+            [self getPrefixCodeWithPSW:password];
+            NSMutableData *data = [NSMutableData dataWithData:[password dataUsingEncoding:NSUTF8StringEncoding]];// 密码
+
+            [data appendBytes:&_mRandomChar length:1];                       // 随机数
+            [data appendData:[ssid dataUsingEncoding:NSUTF8StringEncoding]]; // ssid
+            
+            int size         = 4;
+            int index        = 0;
+            NSData *tempData = nil;
+            for (index = 0;index < (data.length / size); index++) {
+                // 以4为粒度
+                tempData = [data subdataWithRange:NSMakeRange(index * size, size)];
+                [self getSequenceWithIndex:index
+                                      data:tempData];
+            }
+            
+            if ((data.length % size) != 0) {
+                tempData = [data subdataWithRange:NSMakeRange(index * size, data.length % size)];
+                [self getSequenceWithIndex:index
+                                      data:tempData];
+            }
+        }
+    }
+    
+    return _mEncodedDatas;
+}
+
+/**
+ *  前导域数据
+ */
+- (void)getLeadingPart {
+    for (int i = 0; i < 50; ++i) {
+        for (int j = 1; j <= 4; ++j) {
+            [_mEncodedDatas addObject:[NSNumber numberWithInt:j]];
+        }
+    }
+}
+
+/**
+ *  magic code
+ */
+- (void)getMagicCodeWithSSID:(NSString *)ssid
+                    password:(NSString *)password {
+    UInt8 length       = ssid.length + password.length + 1;
+    UInt8 magicCode[4] = {0x00,0x00,0x00,0x00};
+    magicCode[0]       = 0x00 | (length >> 4 & 0xF);
+    
+    if (magicCode[0] == 0) {
+        magicCode[0] = 0x08;
+    }
+    
+    magicCode[1]        = 0x10 | (length & 0xF);
+
+    UInt8 *cipherBuffer = (UInt8*)[ssid UTF8String];
+    UInt8 crc8          = CRC8(cipherBuffer, (int)ssid.length);
+
+    magicCode[2]        = 0x20 | (crc8 >> 4 & 0xF);
+    magicCode[3]        = 0x30 | (crc8 & 0xF);
+    
+    for (int i = 0; i < 20; ++i) {
+        for (int j = 0; j < 4; ++j) {
+            [_mEncodedDatas addObject:[NSNumber numberWithUnsignedChar:magicCode[j]]];
+        }
+    }
+}
+
+/**
+ *  prefix code
+ *
+ *  @param psw <#psw description#>
+ */
+- (void)getPrefixCodeWithPSW:(NSString *)psw {
+    UInt8 length        = psw.length;
+    UInt8 crc8          = CRC8(&length, 1);
+
+    UInt8 prefixCode[4] = {0x00,0x00,0x00,0x00};
+
+    prefixCode[0]       = 0x40 | (length >> 4 & 0xF);
+    prefixCode[1]       = 0x50 | (length & 0xF);
+    prefixCode[2]       = 0x60 | (crc8 >> 4 & 0xF);
+    prefixCode[3]       = 0x70 | (crc8 & 0xF);
+    
+    for (int j = 0; j < 4; ++j) {
+        [_mEncodedDatas addObject:[NSNumber numberWithUnsignedChar:prefixCode[j]]];
+    }
+}
+
+/**
+ *  sequence
+ *
+ *  @param index <#index description#>
+ *  @param data  <#data description#>
+ */
+- (void)getSequenceWithIndex:(UInt8)index
+                        data:(NSData *)data {
+    UInt8 newIndex       = index & 0xFF;
+    NSMutableData *mData = [NSMutableData dataWithBytes:&newIndex
+                                                 length:1];
+    [mData appendData:data];
+
+    UInt8 *originUData   = (UInt8 *)[data bytes];
+    UInt8 *newUData      = (UInt8 *)[mData bytes];
+
+    UInt8 crc8           = CRC8(newUData, (int)mData.length);
+    
+    [_mEncodedDatas addObject:[NSNumber numberWithUnsignedChar:(0x80 | crc8)]];
+    [_mEncodedDatas addObject:[NSNumber numberWithUnsignedChar:(0x80 | index)]];
+
+    for (int i = 0;i < data.length;i++) {
+        [_mEncodedDatas addObject:[NSNumber numberWithUnsignedShort:(0x100 | originUData[i])]];
+    }
+}
+
+/**
+ *  获取CRC8值
+ *
+ *  @param data <#data description#>
+ *  @param len  <#len description#>
+ *
+ *  @return <#return value description#>
+ */
+UInt8 CRC8(UInt8 * data, int len)
+{
+    UInt8 cFcs = 0;
+    int i, j;
+    
+    for( i = 0; i < len; i ++ ) {
+        cFcs ^= data[i];
+        for(j = 0; j < 8; j ++) {
+            if(cFcs & 1) {
+                cFcs ^= 0x18; /* CRC (X(8) + X(5) + X(4) + 1) */
+                cFcs >>= 1;
+                cFcs |= 0x80;
+                //cFcs = (BYTE)((cFcs >> 1) ^ AL2_FCS_COEF);
+            } else {
+                cFcs >>= 1;
+            }
+        }
+    }
+    
+    return cFcs;
+}
+
+#pragma mark - Properties
+- (UInt8)randomChar {
+    return _mRandomChar;
+}
+
+@end