补充某些必要的文件

cocos2d-x/external/sources/xxtea/xxtea.cpp

@@ -0,0 +1,185 @@
+/***********************************************************************
+ 
+ Copyright 2006-2009 Ma Bingyao
+ Copyright 2013 Gao Chunhui, Liu Tao
+ 
+ These sources is free software. Redistributions of source code must
+ retain the above copyright notice. Redistributions in binary form
+ must reproduce the above copyright notice. You can redistribute it
+ freely. You can use it with any free or commercial software.
+ 
+ These sources is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY. Without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ 
+ github: https://github.com/liut/pecl-xxtea
+ 
+ *************************************************************************/
+
+#include "xxtea.h"
+#include <memory.h>
+#include <stdlib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+static void xxtea_long_encrypt(xxtea_long *v, xxtea_long len, xxtea_long *k)
+{
+    xxtea_long n = len - 1;
+    xxtea_long z = v[n], y = v[0], p, q = 6 + 52 / (n + 1), sum = 0, e;
+    if (n < 1) {
+        return;
+    }
+    while (0 < q--) {
+        sum += XXTEA_DELTA;
+        e = sum >> 2 & 3;
+        for (p = 0; p < n; p++) {
+            y = v[p + 1];
+            z = v[p] += XXTEA_MX;
+        }
+        y = v[0];
+        z = v[n] += XXTEA_MX;
+    }
+}
+
+static void xxtea_long_decrypt(xxtea_long *v, xxtea_long len, xxtea_long *k)
+{
+    xxtea_long n = len - 1;
+    xxtea_long z = v[n], y = v[0], p, q = 6 + 52 / (n + 1), sum = q * XXTEA_DELTA, e;
+    if (n < 1) {
+        return;
+    }
+    while (sum != 0) {
+        e = sum >> 2 & 3;
+        for (p = n; p > 0; p--) {
+            z = v[p - 1];
+            y = v[p] -= XXTEA_MX;
+        }
+        z = v[n];
+        y = v[0] -= XXTEA_MX;
+        sum -= XXTEA_DELTA;
+    }
+}
+
+static unsigned char *fix_key_length(unsigned char *key, xxtea_long key_len)
+{
+    unsigned char *tmp = (unsigned char *)malloc(16);
+    memcpy(tmp, key, key_len);
+    memset(tmp + key_len, '\0', 16 - key_len);
+    return tmp;
+}
+
+static xxtea_long *xxtea_to_long_array(unsigned char *data, xxtea_long len, int include_length, xxtea_long *ret_len) {
+    xxtea_long i, n, *result;
+    
+    n = len >> 2;
+    n = (((len & 3) == 0) ? n : n + 1);
+    if (include_length) {
+        result = (xxtea_long *)malloc((n + 1) << 2);
+        result[n] = len;
+        *ret_len = n + 1;
+    } else {
+        result = (xxtea_long *)malloc(n << 2);
+        *ret_len = n;
+    }
+    memset(result, 0, n << 2);
+    for (i = 0; i < len; i++) {
+        result[i >> 2] |= (xxtea_long)data[i] << ((i & 3) << 3);
+    }
+    
+    return result;
+}
+
+static unsigned char *xxtea_to_byte_array(xxtea_long *data, xxtea_long len, int include_length, xxtea_long *ret_len) {
+    xxtea_long i, n, m;
+    unsigned char *result;
+    
+    n = len << 2;
+    if (include_length) {
+        m = data[len - 1];
+        if ((m < n - 7) || (m > n - 4)) return NULL;
+        n = m;
+    }
+    result = (unsigned char *)malloc(n + 1);
+    for (i = 0; i < n; i++) {
+        result[i] = (unsigned char)((data[i >> 2] >> ((i & 3) << 3)) & 0xff);
+    }
+    result[n] = '\0';
+    *ret_len = n;
+    
+    return result;
+}
+
+static unsigned char *do_xxtea_encrypt(unsigned char *data, xxtea_long len, unsigned char *key, xxtea_long *ret_len) {
+    unsigned char *result;
+    xxtea_long *v, *k, v_len, k_len;
+    
+    v = xxtea_to_long_array(data, len, 1, &v_len);
+    k = xxtea_to_long_array(key, 16, 0, &k_len);
+    xxtea_long_encrypt(v, v_len, k);
+    result = xxtea_to_byte_array(v, v_len, 0, ret_len);
+    free(v);
+    free(k);
+    
+    return result;
+}
+
+static unsigned char *do_xxtea_decrypt(unsigned char *data, xxtea_long len, unsigned char *key, xxtea_long *ret_len) {
+    unsigned char *result;
+    xxtea_long *v, *k, v_len, k_len;
+    
+    v = xxtea_to_long_array(data, len, 0, &v_len);
+    k = xxtea_to_long_array(key, 16, 0, &k_len);
+    xxtea_long_decrypt(v, v_len, k);
+    result = xxtea_to_byte_array(v, v_len, 1, ret_len);
+    free(v);
+    free(k);
+    
+    return result;
+}
+
+unsigned char *xxtea_encrypt(unsigned char *data, xxtea_long data_len, unsigned char *key, xxtea_long key_len, xxtea_long *ret_length)
+{
+    unsigned char *result;
+    
+    *ret_length = 0;
+    
+    if (key_len < 16) {
+        unsigned char *key2 = fix_key_length(key, key_len);
+        result = do_xxtea_encrypt(data, data_len, key2, ret_length);
+        free(key2);
+    }
+    else
+    {
+        result = do_xxtea_encrypt(data, data_len, key, ret_length);
+    }
+    
+    return result;
+}
+
+unsigned char *xxtea_decrypt(unsigned char *data, xxtea_long data_len, unsigned char *key, xxtea_long key_len, xxtea_long *ret_length)
+{
+    unsigned char *result;
+    
+    *ret_length = 0;
+    
+    if (key_len < 16) {
+        unsigned char *key2 = fix_key_length(key, key_len);
+        result = do_xxtea_decrypt(data, data_len, key2, ret_length);
+        free(key2);
+    }
+    else
+    {
+        result = do_xxtea_decrypt(data, data_len, key, ret_length);
+    }
+    
+    return result;
+}
+
+/* }}} */
+
+#ifdef __cplusplus
+}
+#endif
+

cocos2d-x/external/sources/xxtea/xxtea.h

@@ -0,0 +1,66 @@
+/***********************************************************************
+ 
+ Copyright 2006-2009 Ma Bingyao
+ Copyright 2013 Gao Chunhui, Liu Tao
+ 
+ These sources is free software. Redistributions of source code must
+ retain the above copyright notice. Redistributions in binary form
+ must reproduce the above copyright notice. You can redistribute it
+ freely. You can use it with any free or commercial software.
+ 
+ These sources is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY. Without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ 
+ github: https://github.com/liut/pecl-xxtea
+ 
+ *************************************************************************/
+
+#ifndef XXTEA_H
+#define XXTEA_H
+
+#include <stddef.h> /* for size_t & NULL declarations */
+
+#if defined(_WIN32) && defined(_WINDOWS)
+#if defined(_USRDLL)
+#define XXTEA_DLL     __declspec(dllexport)
+#else         /* use a DLL library */
+#define XXTEA_DLL     __declspec(dllimport)
+#endif
+#else
+#define XXTEA_DLL
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if defined(_MSC_VER)
+
+typedef unsigned __int32 xxtea_long;
+
+#else
+
+#if defined(__FreeBSD__) && __FreeBSD__ < 5
+/* FreeBSD 4 doesn't have stdint.h file */
+#include <inttypes.h>
+#else
+#include <stdint.h>
+#endif
+
+typedef uint32_t xxtea_long;
+
+#endif /* end of if defined(_MSC_VER) */
+
+#define XXTEA_MX (z >> 5 ^ y << 2) + (y >> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z)
+#define XXTEA_DELTA 0x9e3779b9
+
+XXTEA_DLL unsigned char *xxtea_encrypt(unsigned char *data, xxtea_long data_len, unsigned char *key, xxtea_long key_len, xxtea_long *ret_length);
+XXTEA_DLL unsigned char *xxtea_decrypt(unsigned char *data, xxtea_long data_len, unsigned char *key, xxtea_long key_len, xxtea_long *ret_length);
+
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif