Update freetype to latest version of ASOP.

src/base/md5.c

+/*
+ * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
+ * MD5 Message-Digest Algorithm (RFC 1321).
+ *
+ * Homepage:
+ * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5
+ *
+ * Author:
+ * Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
+ *
+ * This software was written by Alexander Peslyak in 2001.  No copyright is
+ * claimed, and the software is hereby placed in the public domain.
+ * In case this attempt to disclaim copyright and place the software in the
+ * public domain is deemed null and void, then the software is
+ * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the
+ * general public under the following terms:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted.
+ *
+ * There's ABSOLUTELY NO WARRANTY, express or implied.
+ *
+ * (This is a heavily cut-down "BSD license".)
+ *
+ * This differs from Colin Plumb's older public domain implementation in that
+ * no exactly 32-bit integer data type is required (any 32-bit or wider
+ * unsigned integer data type will do), there's no compile-time endianness
+ * configuration, and the function prototypes match OpenSSL's.  No code from
+ * Colin Plumb's implementation has been reused; this comment merely compares
+ * the properties of the two independent implementations.
+ *
+ * The primary goals of this implementation are portability and ease of use.
+ * It is meant to be fast, but not as fast as possible.  Some known
+ * optimizations are not included to reduce source code size and avoid
+ * compile-time configuration.
+ */
+
+#ifndef HAVE_OPENSSL
+
+#include <string.h>
+
+#include "md5.h"
+
+/*
+ * The basic MD5 functions.
+ *
+ * F and G are optimized compared to their RFC 1321 definitions for
+ * architectures that lack an AND-NOT instruction, just like in Colin Plumb's
+ * implementation.
+ */
+#define F(x, y, z)                      ((z) ^ ((x) & ((y) ^ (z))))
+#define G(x, y, z)                      ((y) ^ ((z) & ((x) ^ (y))))
+#define H(x, y, z)                      ((x) ^ (y) ^ (z))
+#define I(x, y, z)                      ((y) ^ ((x) | ~(z)))
+
+/*
+ * The MD5 transformation for all four rounds.
+ */
+#define STEP(f, a, b, c, d, x, t, s) \
+        (a) += f((b), (c), (d)) + (x) + (t); \
+        (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \
+        (a) += (b);
+
+/*
+ * SET reads 4 input bytes in little-endian byte order and stores them
+ * in a properly aligned word in host byte order.
+ *
+ * The check for little-endian architectures that tolerate unaligned
+ * memory accesses is just an optimization.  Nothing will break if it
+ * doesn't work.
+ */
+#if defined(__i386__) || defined(__x86_64__) || defined(__vax__)
+#define SET(n) \
+        (*(MD5_u32plus *)&ptr[(n) * 4])
+#define GET(n) \
+        SET(n)
+#else
+#define SET(n) \
+        (ctx->block[(n)] = \
+        (MD5_u32plus)ptr[(n) * 4] | \
+        ((MD5_u32plus)ptr[(n) * 4 + 1] << 8) | \
+        ((MD5_u32plus)ptr[(n) * 4 + 2] << 16) | \
+        ((MD5_u32plus)ptr[(n) * 4 + 3] << 24))
+#define GET(n) \
+        (ctx->block[(n)])
+#endif
+
+/*
+ * This processes one or more 64-byte data blocks, but does NOT update
+ * the bit counters.  There are no alignment requirements.
+ */
+static void *body(MD5_CTX *ctx, void *data, unsigned long size)
+{
+        unsigned char *ptr;
+        MD5_u32plus a, b, c, d;
+        MD5_u32plus saved_a, saved_b, saved_c, saved_d;
+
+        ptr = (unsigned char *)data;
+
+        a = ctx->a;
+        b = ctx->b;
+        c = ctx->c;
+        d = ctx->d;
+
+        do {
+                saved_a = a;
+                saved_b = b;
+                saved_c = c;
+                saved_d = d;
+
+/* Round 1 */
+                STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7)
+                STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12)
+                STEP(F, c, d, a, b, SET(2), 0x242070db, 17)
+                STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22)
+                STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7)
+                STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12)
+                STEP(F, c, d, a, b, SET(6), 0xa8304613, 17)
+                STEP(F, b, c, d, a, SET(7), 0xfd469501, 22)
+                STEP(F, a, b, c, d, SET(8), 0x698098d8, 7)
+                STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12)
+                STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17)
+                STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22)
+                STEP(F, a, b, c, d, SET(12), 0x6b901122, 7)
+                STEP(F, d, a, b, c, SET(13), 0xfd987193, 12)
+                STEP(F, c, d, a, b, SET(14), 0xa679438e, 17)
+                STEP(F, b, c, d, a, SET(15), 0x49b40821, 22)
+
+/* Round 2 */
+                STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5)
+                STEP(G, d, a, b, c, GET(6), 0xc040b340, 9)
+                STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14)
+                STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20)
+                STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5)
+                STEP(G, d, a, b, c, GET(10), 0x02441453, 9)
+                STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14)
+                STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20)
+                STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5)
+                STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9)
+                STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14)
+                STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20)
+                STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5)
+                STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9)
+                STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14)
+                STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20)
+
+/* Round 3 */
+                STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4)
+                STEP(H, d, a, b, c, GET(8), 0x8771f681, 11)
+                STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16)
+                STEP(H, b, c, d, a, GET(14), 0xfde5380c, 23)
+                STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4)
+                STEP(H, d, a, b, c, GET(4), 0x4bdecfa9, 11)
+                STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16)
+                STEP(H, b, c, d, a, GET(10), 0xbebfbc70, 23)
+                STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4)
+                STEP(H, d, a, b, c, GET(0), 0xeaa127fa, 11)
+                STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16)
+                STEP(H, b, c, d, a, GET(6), 0x04881d05, 23)
+                STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4)
+                STEP(H, d, a, b, c, GET(12), 0xe6db99e5, 11)
+                STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16)
+                STEP(H, b, c, d, a, GET(2), 0xc4ac5665, 23)
+
+/* Round 4 */
+                STEP(I, a, b, c, d, GET(0), 0xf4292244, 6)
+                STEP(I, d, a, b, c, GET(7), 0x432aff97, 10)
+                STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15)
+                STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21)
+                STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6)
+                STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10)
+                STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15)
+                STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21)
+                STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6)
+                STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10)
+                STEP(I, c, d, a, b, GET(6), 0xa3014314, 15)
+                STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21)
+                STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6)
+                STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10)
+                STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15)
+                STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21)
+
+                a += saved_a;
+                b += saved_b;
+                c += saved_c;
+                d += saved_d;
+
+                ptr += 64;
+        } while (size -= 64);
+
+        ctx->a = a;
+        ctx->b = b;
+        ctx->c = c;
+        ctx->d = d;
+
+        return ptr;
+}
+
+void MD5_Init(MD5_CTX *ctx)
+{
+        ctx->a = 0x67452301;
+        ctx->b = 0xefcdab89;
+        ctx->c = 0x98badcfe;
+        ctx->d = 0x10325476;
+
+        ctx->lo = 0;
+        ctx->hi = 0;
+}
+
+void MD5_Update(MD5_CTX *ctx, void *data, unsigned long size)
+{
+        MD5_u32plus saved_lo;
+        unsigned long used, free;
+
+        saved_lo = ctx->lo;
+        if ((ctx->lo = (saved_lo + size) & 0x1fffffff) < saved_lo)
+                ctx->hi++;
+        ctx->hi += size >> 29;
+
+        used = saved_lo & 0x3f;
+
+        if (used) {
+                free = 64 - used;
+
+                if (size < free) {
+                        memcpy(&ctx->buffer[used], data, size);
+                        return;
+                }
+
+                memcpy(&ctx->buffer[used], data, free);
+                data = (unsigned char *)data + free;
+                size -= free;
+                body(ctx, ctx->buffer, 64);
+        }
+
+        if (size >= 64) {
+                data = body(ctx, data, size & ~(unsigned long)0x3f);
+                size &= 0x3f;
+        }
+
+        memcpy(ctx->buffer, data, size);
+}
+
+void MD5_Final(unsigned char *result, MD5_CTX *ctx)
+{
+        unsigned long used, free;
+
+        used = ctx->lo & 0x3f;
+
+        ctx->buffer[used++] = 0x80;
+
+        free = 64 - used;
+
+        if (free < 8) {
+                memset(&ctx->buffer[used], 0, free);
+                body(ctx, ctx->buffer, 64);
+                used = 0;
+                free = 64;
+        }
+
+        memset(&ctx->buffer[used], 0, free - 8);
+
+        ctx->lo <<= 3;
+        ctx->buffer[56] = ctx->lo;
+        ctx->buffer[57] = ctx->lo >> 8;
+        ctx->buffer[58] = ctx->lo >> 16;
+        ctx->buffer[59] = ctx->lo >> 24;
+        ctx->buffer[60] = ctx->hi;
+        ctx->buffer[61] = ctx->hi >> 8;
+        ctx->buffer[62] = ctx->hi >> 16;
+        ctx->buffer[63] = ctx->hi >> 24;
+
+        body(ctx, ctx->buffer, 64);
+
+        result[0] = ctx->a;
+        result[1] = ctx->a >> 8;
+        result[2] = ctx->a >> 16;
+        result[3] = ctx->a >> 24;
+        result[4] = ctx->b;
+        result[5] = ctx->b >> 8;
+        result[6] = ctx->b >> 16;
+        result[7] = ctx->b >> 24;
+        result[8] = ctx->c;
+        result[9] = ctx->c >> 8;
+        result[10] = ctx->c >> 16;
+        result[11] = ctx->c >> 24;
+        result[12] = ctx->d;
+        result[13] = ctx->d >> 8;
+        result[14] = ctx->d >> 16;
+        result[15] = ctx->d >> 24;
+
+        memset(ctx, 0, sizeof(*ctx));
+}
+
+#endif