move 3rd-party librarys into libs/ and add built-in honeysuckle

1 files changed, 171 insertions, 0 deletions

diff --git a/libs/assimp/contrib/unzip/crypt.c b/libs/assimp/contrib/unzip/crypt.c
new file mode 100644
index 0000000..299ce03
--- /dev/null
+++ b/libs/assimp/contrib/unzip/crypt.c
@@ -0,0 +1,171 @@
+/* crypt.c -- base code for traditional PKWARE encryption
+   Version 1.01e, February 12th, 2005
+
+   Copyright (C) 1998-2005 Gilles Vollant
+   Modifications for Info-ZIP crypting
+     Copyright (C) 2003 Terry Thorsen
+
+   This code is a modified version of crypting code in Info-ZIP distribution
+
+   Copyright (C) 1990-2000 Info-ZIP.  All rights reserved.
+
+   This program is distributed under the terms of the same license as zlib.
+   See the accompanying LICENSE file for the full text of the license.
+
+   This encryption code is a direct transcription of the algorithm from
+   Roger Schlafly, described by Phil Katz in the file appnote.txt. This
+   file (appnote.txt) is distributed with the PKZIP program (even in the
+   version without encryption capabilities).
+
+   If you don't need crypting in your application, just define symbols
+   NOCRYPT and NOUNCRYPT.
+*/
+
+#if defined(WIN32) || defined(_WIN32) || defined(__WIN32) && !defined(__CYGWIN__)
+    #define MICROSOFT_WINDOWS_WINBASE_H_DEFINE_INTERLOCKED_CPLUSPLUS_OVERLOADS 0
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <time.h>
+
+#ifdef _WIN32
+#  include <windows.h>
+#  include <wincrypt.h>
+#else
+#  include <sys/stat.h>
+#  include <fcntl.h>
+#  include <unistd.h>
+#endif
+
+#include "zlib.h"
+
+#include "crypt.h"
+
+#ifdef _WIN32
+#   pragma warning(push)
+#   pragma warning(disable : 4244)
+#endif // _WIN32
+
+/***************************************************************************/
+
+#define CRC32(c, b) ((*(pcrc_32_tab+(((uint32_t)(c) ^ (b)) & 0xff))) ^ ((c) >> 8))
+
+#ifndef ZCR_SEED2
+#  define ZCR_SEED2 3141592654UL     /* use PI as default pattern */
+#endif
+
+/***************************************************************************/
+
+uint8_t decrypt_byte(uint32_t *pkeys)
+{
+    unsigned temp;  /* POTENTIAL BUG:  temp*(temp^1) may overflow in an
+                     * unpredictable manner on 16-bit systems; not a problem
+                     * with any known compiler so far, though */
+
+    temp = ((uint32_t)(*(pkeys+2)) & 0xffff) | 2;
+    return (uint8_t)(((temp * (temp ^ 1)) >> 8) & 0xff);
+}
+
+uint8_t update_keys(uint32_t *pkeys, const z_crc_t *pcrc_32_tab, int32_t c)
+{
+    (*(pkeys+0)) = (uint32_t)CRC32((*(pkeys+0)), c);
+    (*(pkeys+1)) += (*(pkeys+0)) & 0xff;
+    (*(pkeys+1)) = (*(pkeys+1)) * 134775813L + 1;
+    {
+        register int32_t keyshift = (int32_t)((*(pkeys + 1)) >> 24);
+        (*(pkeys+2)) = (uint32_t)CRC32((*(pkeys+2)), keyshift);
+    }
+    return c;
+}
+
+void init_keys(const char *passwd, uint32_t *pkeys, const z_crc_t *pcrc_32_tab)
+{
+    *(pkeys+0) = 305419896L;
+    *(pkeys+1) = 591751049L;
+    *(pkeys+2) = 878082192L;
+    while (*passwd != 0)
+    {
+        update_keys(pkeys, pcrc_32_tab, *passwd);
+        passwd += 1;
+    }
+}
+
+/***************************************************************************/
+
+int cryptrand(unsigned char *buf, unsigned int len)
+{
+    static unsigned calls = 0;
+    int rlen = 0;
+#ifdef _WIN32
+    HCRYPTPROV provider;
+    unsigned __int64 pentium_tsc[1];
+    int result = 0;
+
+
+    if (CryptAcquireContext(&provider, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_SILENT))
+    {
+        result = CryptGenRandom(provider, len, buf);
+        CryptReleaseContext(provider, 0);
+        if (result)
+            return len;
+    }
+
+    for (rlen = 0; rlen < (int)len; ++rlen)
+    {
+        if (rlen % 8 == 0)
+            QueryPerformanceCounter((LARGE_INTEGER *)pentium_tsc);
+        buf[rlen] = ((unsigned char*)pentium_tsc)[rlen % 8];
+    }
+#else
+    int frand = open("/dev/urandom", O_RDONLY);
+    if (frand != -1)
+    {
+        rlen = (int)read(frand, buf, len);
+        close(frand);
+    }
+#endif
+    if (rlen < (int)len)
+    {
+        /* Ensure different random header each time */
+        if (++calls == 1)
+            srand((unsigned)(time(NULL) ^ ZCR_SEED2));
+
+        while (rlen < (int)len)
+            buf[rlen++] = (rand() >> 7) & 0xff;
+    }
+    return rlen;
+}
+
+int crypthead(const char *passwd, uint8_t *buf, int buf_size, uint32_t *pkeys, 
+              const z_crc_t *pcrc_32_tab, uint8_t verify1, uint8_t verify2)
+{
+    uint8_t n = 0;                      /* index in random header */
+    uint8_t header[RAND_HEAD_LEN-2];    /* random header */
+    uint16_t t = 0;                     /* temporary */
+
+    if (buf_size < RAND_HEAD_LEN)
+        return 0;
+
+    init_keys(passwd, pkeys, pcrc_32_tab);
+
+    /* First generate RAND_HEAD_LEN-2 random bytes. */
+    cryptrand(header, RAND_HEAD_LEN-2);
+
+    /* Encrypt random header (last two bytes is high word of crc) */
+    init_keys(passwd, pkeys, pcrc_32_tab);
+
+    for (n = 0; n < RAND_HEAD_LEN-2; n++)
+        buf[n] = (uint8_t)zencode(pkeys, pcrc_32_tab, header[n], t);
+
+    buf[n++] = (uint8_t)zencode(pkeys, pcrc_32_tab, verify1, t);
+    buf[n++] = (uint8_t)zencode(pkeys, pcrc_32_tab, verify2, t);
+    return n;
+}
+
+#ifdef _WIN32
+#   pragma warning(pop)
+#endif // _WIN32
+
+/***************************************************************************/