--- /dev/null
+/*
+ * fontconfig/src/fchash.c
+ *
+ * Copyright © 2003 Keith Packard
+ * Copyright © 2013 Red Hat, Inc.
+ * Red Hat Author(s): Akira TAGOH
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the author(s) not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. The authors make no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "fcint.h"
+#include <stdio.h>
+#include <string.h>
+
+#define ROTRN(w, v, n) ((((FcChar32)v) >> n) | (((FcChar32)v) << (w - n)))
+#define ROTR32(v, n) ROTRN(32, v, n)
+#define SHR(v, n) (v >> n)
+#define Ch(x, y, z) ((x & y) ^ (~x & z))
+#define Maj(x, y, z) ((x & y) ^ (x & z) ^ (y & z))
+#define SS0(x) (ROTR32(x, 2) ^ ROTR32(x, 13) ^ ROTR32(x, 22))
+#define SS1(x) (ROTR32(x, 6) ^ ROTR32(x, 11) ^ ROTR32(x, 25))
+#define ss0(x) (ROTR32(x, 7) ^ ROTR32(x, 18) ^ SHR(x, 3))
+#define ss1(x) (ROTR32(x, 17) ^ ROTR32(x, 19) ^ SHR(x, 10))
+
+
+static FcChar32 *
+FcHashInitSHA256Digest (void)
+{
+ int i;
+ static const FcChar32 h[] = {
+ 0x6a09e667UL, 0xbb67ae85UL, 0x3c6ef372UL, 0xa54ff53aUL,
+ 0x510e527fUL, 0x9b05688cUL, 0x1f83d9abUL, 0x5be0cd19UL
+ };
+ FcChar32 *ret = malloc (sizeof (FcChar32) * 8);
+
+ if (!ret)
+ return NULL;
+
+ for (i = 0; i < 8; i++)
+ ret[i] = h[i];
+
+ return ret;
+}
+
+static void
+FcHashComputeSHA256Digest (FcChar32 *hash,
+ const char *block)
+{
+ static const FcChar32 k[] = {
+ 0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL,
+ 0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL,
+ 0xd807aa98UL, 0x12835b01UL, 0x243185beUL, 0x550c7dc3UL,
+ 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, 0xc19bf174UL,
+ 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
+ 0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL,
+ 0x983e5152UL, 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL,
+ 0xc6e00bf3UL, 0xd5a79147UL, 0x06ca6351UL, 0x14292967UL,
+ 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, 0x53380d13UL,
+ 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
+ 0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL,
+ 0xd192e819UL, 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL,
+ 0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL,
+ 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL,
+ 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
+ 0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
+ };
+ FcChar32 w[64], i, j, t1, t2;
+ FcChar32 a, b, c, d, e, f, g, h;
+
+#define H(n) (hash[n])
+
+ a = H(0);
+ b = H(1);
+ c = H(2);
+ d = H(3);
+ e = H(4);
+ f = H(5);
+ g = H(6);
+ h = H(7);
+
+ for (i = 0; i < 16; i++)
+ {
+ j = (block[(i * 4) + 0] & 0xff) << (8 * 3);
+ j |= (block[(i * 4) + 1] & 0xff) << (8 * 2);
+ j |= (block[(i * 4) + 2] & 0xff) << (8 * 1);
+ j |= (block[(i * 4) + 3] & 0xff);
+ w[i] = j;
+ }
+ for (i = 16; i < 64; i++)
+ w[i] = ss1(w[i - 2]) + w[i - 7] + ss0(w[i - 15]) + w[i - 16];
+
+ for (i = 0; i < 64; i++)
+ {
+ t1 = h + SS1(e) + Ch(e, f, g) + k[i] + w[i];
+ t2 = SS0(a) + Maj(a, b, c);
+ h = g;
+ g = f;
+ f = e;
+ e = d + t1;
+ d = c;
+ c = b;
+ b = a;
+ a = t1 + t2;
+ }
+
+ H(0) += a;
+ H(1) += b;
+ H(2) += c;
+ H(3) += d;
+ H(4) += e;
+ H(5) += f;
+ H(6) += g;
+ H(7) += h;
+
+#undef H
+}
+
+static FcChar8 *
+FcHashSHA256ToString (FcChar32 *hash)
+{
+ FcChar8 *ret = NULL;
+ static const char hex[] = "0123456789abcdef";
+ int i, j;
+
+ if (hash)
+ {
+ ret = malloc (sizeof (FcChar8) * (8 * 8 + 7 + 1));
+ if (!ret)
+ return NULL;
+ memcpy (ret, "sha256:", 7);
+#define H(n) hash[n]
+ for (i = 0; i < 8; i++)
+ {
+ FcChar32 v = H(i);
+
+ for (j = 0; j < 8; j++)
+ ret[7 + (i * 8) + j] = hex[(v >> (28 - j * 4)) & 0xf];
+ }
+ ret[7 + i * 8] = 0;
+#undef H
+ free (hash);
+ }
+
+ return ret;
+}
+
+FcChar8 *
+FcHashGetSHA256Digest (const FcChar8 *input_strings,
+ size_t len)
+{
+ size_t i, round_len = len / 64;
+ char block[64];
+ FcChar32 *ret = FcHashInitSHA256Digest ();
+
+ if (!ret)
+ return NULL;
+
+ for (i = 0; i < round_len; i++)
+ {
+ FcHashComputeSHA256Digest (ret, (const char *)&input_strings[i * 64]);
+ }
+ /* padding */
+ if ((len % 64) != 0)
+ memcpy (block, &input_strings[len / 64], len % 64);
+ memset (&block[len % 64], 0, 64 - (len % 64));
+ block[len % 64] = 0x80;
+ if ((64 - (len % 64)) < 9)
+ {
+ /* process a block once */
+ FcHashComputeSHA256Digest (ret, block);
+ memset (block, 0, 64);
+ }
+ /* set input size at the end */
+ len *= 8;
+ block[63 - 0] = len & 0xff;
+ block[63 - 1] = (len >> 8) & 0xff;
+ block[63 - 2] = (len >> 16) & 0xff;
+ block[63 - 3] = (len >> 24) & 0xff;
+ block[63 - 4] = (len >> 32) & 0xff;
+ block[63 - 5] = (len >> 40) & 0xff;
+ block[63 - 6] = (len >> 48) & 0xff;
+ block[63 - 7] = (len >> 56) & 0xff;
+ FcHashComputeSHA256Digest (ret, block);
+
+ return FcHashSHA256ToString (ret);
+}
+
+FcChar8 *
+FcHashGetSHA256DigestFromFile (const FcChar8 *filename)
+{
+ FILE *fp = fopen ((const char *)filename, "rb");
+ char ibuf[64];
+ FcChar32 *ret;
+ size_t len;
+ struct stat st;
+
+ if (!fp)
+ return NULL;
+
+ if (FcStat (filename, &st))
+ goto bail0;
+
+ ret = FcHashInitSHA256Digest ();
+ if (!ret)
+ return NULL;
+
+ while (!feof (fp))
+ {
+ if ((len = fread (ibuf, sizeof (char), 64, fp)) < 64)
+ {
+ long v;
+
+ /* add a padding */
+ memset (&ibuf[len], 0, 64 - len);
+ ibuf[len] = 0x80;
+ if ((64 - len) < 9)
+ {
+ /* process a block once */
+ FcHashComputeSHA256Digest (ret, ibuf);
+ memset (ibuf, 0, 64);
+ }
+ /* set input size at the end */
+ v = (long)st.st_size * 8;
+ ibuf[63 - 0] = v & 0xff;
+ ibuf[63 - 1] = (v >> 8) & 0xff;
+ ibuf[63 - 2] = (v >> 16) & 0xff;
+ ibuf[63 - 3] = (v >> 24) & 0xff;
+ ibuf[63 - 4] = (v >> 32) & 0xff;
+ ibuf[63 - 5] = (v >> 40) & 0xff;
+ ibuf[63 - 6] = (v >> 48) & 0xff;
+ ibuf[63 - 7] = (v >> 56) & 0xff;
+ FcHashComputeSHA256Digest (ret, ibuf);
+ break;
+ }
+ else
+ {
+ FcHashComputeSHA256Digest (ret, ibuf);
+ }
+ }
+ fclose (fp);
+
+ return FcHashSHA256ToString (ret);
+
+bail0:
+ fclose (fp);
+ return NULL;
+}
projects / platform / upstream / fontconfig.git / commitdiff