new file mode 100644
--- /dev/null
+++ b/dom/media/gmp/rlz/sha256.c
@@ -0,0 +1,469 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Stripped down version of security/nss/lib/freebl/sha512.c
+// and related headers.
+
+#include "sha256.h"
+#include "string.h"
+#include "prcpucfg.h"
+#if defined(NSS_X86) || defined(SHA_NO_LONG_LONG)
+#define NOUNROLL512 1
+#undef HAVE_LONG_LONG
+#endif
+
+#define SHA256_BLOCK_LENGTH 64 /* bytes */
+
+typedef enum _SECStatus {
+ SECWouldBlock = -2,
+ SECFailure = -1,
+ SECSuccess = 0
+} SECStatus;
+
+/* ============= Common constants and defines ======================= */
+
+#define W ctx->u.w
+#define B ctx->u.b
+#define H ctx->h
+
+#define SHR(x,n) (x >> n)
+#define SHL(x,n) (x << n)
+#define Ch(x,y,z) ((x & y) ^ (~x & z))
+#define Maj(x,y,z) ((x & y) ^ (x & z) ^ (y & z))
+#define SHA_MIN(a,b) (a < b ? a : b)
+
+/* Padding used with all flavors of SHA */
+static const PRUint8 pad[240] = {
+0x80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+ /* compiler will fill the rest in with zeros */
+};
+
+/* ============= SHA256 implementation ================================== */
+
+/* SHA-256 constants, K256. */
+static const PRUint32 K256[64] = {
+ 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
+ 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
+ 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
+ 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
+ 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
+ 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+ 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
+ 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
+ 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
+ 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
+ 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
+ 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+ 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
+ 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
+ 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
+ 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+};
+
+/* SHA-256 initial hash values */
+static const PRUint32 H256[8] = {
+ 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
+ 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
+};
+
+#if defined(_MSC_VER)
+#include <stdlib.h>
+#pragma intrinsic(_byteswap_ulong)
+#define SHA_HTONL(x) _byteswap_ulong(x)
+#define BYTESWAP4(x) x = SHA_HTONL(x)
+#elif defined(__GNUC__) && defined(NSS_X86_OR_X64)
+static __inline__ PRUint32 swap4b(PRUint32 value)
+{
+ __asm__("bswap %0" : "+r" (value));
+ return (value);
+}
+#define SHA_HTONL(x) swap4b(x)
+#define BYTESWAP4(x) x = SHA_HTONL(x)
+
+#elif defined(__GNUC__) && (defined(__thumb2__) || \
+ (!defined(__thumb__) && \
+ (defined(__ARM_ARCH_6__) || \
+ defined(__ARM_ARCH_6J__) || \
+ defined(__ARM_ARCH_6K__) || \
+ defined(__ARM_ARCH_6Z__) || \
+ defined(__ARM_ARCH_6ZK__) || \
+ defined(__ARM_ARCH_6T2__) || \
+ defined(__ARM_ARCH_7__) || \
+ defined(__ARM_ARCH_7A__) || \
+ defined(__ARM_ARCH_7R__))))
+static __inline__ PRUint32 swap4b(PRUint32 value)
+{
+ PRUint32 ret;
+ __asm__("rev %0, %1" : "=r" (ret) : "r"(value));
+ return ret;
+}
+#define SHA_HTONL(x) swap4b(x)
+#define BYTESWAP4(x) x = SHA_HTONL(x)
+
+#else
+#define SWAP4MASK 0x00FF00FF
+#define SHA_HTONL(x) (t1 = (x), t1 = (t1 << 16) | (t1 >> 16), \
+ ((t1 & SWAP4MASK) << 8) | ((t1 >> 8) & SWAP4MASK))
+#define BYTESWAP4(x) x = SHA_HTONL(x)
+#endif
+
+#if defined(_MSC_VER)
+#pragma intrinsic (_lrotr, _lrotl)
+#define ROTR32(x,n) _lrotr(x,n)
+#define ROTL32(x,n) _lrotl(x,n)
+#else
+#define ROTR32(x,n) ((x >> n) | (x << ((8 * sizeof x) - n)))
+#define ROTL32(x,n) ((x << n) | (x >> ((8 * sizeof x) - n)))
+#endif
+
+/* Capitol Sigma and lower case sigma functions */
+#define S0(x) (ROTR32(x, 2) ^ ROTR32(x,13) ^ ROTR32(x,22))
+#define S1(x) (ROTR32(x, 6) ^ ROTR32(x,11) ^ ROTR32(x,25))
+#define s0(x) (t1 = x, ROTR32(t1, 7) ^ ROTR32(t1,18) ^ SHR(t1, 3))
+#define s1(x) (t2 = x, ROTR32(t2,17) ^ ROTR32(t2,19) ^ SHR(t2,10))
+
+void
+SHA256_Begin(SHA256Context *ctx)
+{
+ memset(ctx, 0, sizeof *ctx);
+ memcpy(H, H256, sizeof H256);
+}
+
+static void
+SHA256_Compress(SHA256Context *ctx)
+{
+ {
+ register PRUint32 t1, t2;
+
+#if defined(IS_LITTLE_ENDIAN)
+ BYTESWAP4(W[0]);
+ BYTESWAP4(W[1]);
+ BYTESWAP4(W[2]);
+ BYTESWAP4(W[3]);
+ BYTESWAP4(W[4]);
+ BYTESWAP4(W[5]);
+ BYTESWAP4(W[6]);
+ BYTESWAP4(W[7]);
+ BYTESWAP4(W[8]);
+ BYTESWAP4(W[9]);
+ BYTESWAP4(W[10]);
+ BYTESWAP4(W[11]);
+ BYTESWAP4(W[12]);
+ BYTESWAP4(W[13]);
+ BYTESWAP4(W[14]);
+ BYTESWAP4(W[15]);
+#endif
+
+#define INITW(t) W[t] = (s1(W[t-2]) + W[t-7] + s0(W[t-15]) + W[t-16])
+
+ /* prepare the "message schedule" */
+#ifdef NOUNROLL256
+ {
+ int t;
+ for (t = 16; t < 64; ++t) {
+ INITW(t);
+ }
+ }
+#else
+ INITW(16);
+ INITW(17);
+ INITW(18);
+ INITW(19);
+
+ INITW(20);
+ INITW(21);
+ INITW(22);
+ INITW(23);
+ INITW(24);
+ INITW(25);
+ INITW(26);
+ INITW(27);
+ INITW(28);
+ INITW(29);
+
+ INITW(30);
+ INITW(31);
+ INITW(32);
+ INITW(33);
+ INITW(34);
+ INITW(35);
+ INITW(36);
+ INITW(37);
+ INITW(38);
+ INITW(39);
+
+ INITW(40);
+ INITW(41);
+ INITW(42);
+ INITW(43);
+ INITW(44);
+ INITW(45);
+ INITW(46);
+ INITW(47);
+ INITW(48);
+ INITW(49);
+
+ INITW(50);
+ INITW(51);
+ INITW(52);
+ INITW(53);
+ INITW(54);
+ INITW(55);
+ INITW(56);
+ INITW(57);
+ INITW(58);
+ INITW(59);
+
+ INITW(60);
+ INITW(61);
+ INITW(62);
+ INITW(63);
+
+#endif
+#undef INITW
+ }
+ {
+ PRUint32 a, b, c, d, e, f, g, h;
+
+ a = H[0];
+ b = H[1];
+ c = H[2];
+ d = H[3];
+ e = H[4];
+ f = H[5];
+ g = H[6];
+ h = H[7];
+
+#define ROUND(n,a,b,c,d,e,f,g,h) \
+ h += S1(e) + Ch(e,f,g) + K256[n] + W[n]; \
+ d += h; \
+ h += S0(a) + Maj(a,b,c);
+
+#ifdef NOUNROLL256
+ {
+ int t;
+ for (t = 0; t < 64; t+= 8) {
+ ROUND(t+0,a,b,c,d,e,f,g,h)
+ ROUND(t+1,h,a,b,c,d,e,f,g)
+ ROUND(t+2,g,h,a,b,c,d,e,f)
+ ROUND(t+3,f,g,h,a,b,c,d,e)
+ ROUND(t+4,e,f,g,h,a,b,c,d)
+ ROUND(t+5,d,e,f,g,h,a,b,c)
+ ROUND(t+6,c,d,e,f,g,h,a,b)
+ ROUND(t+7,b,c,d,e,f,g,h,a)
+ }
+ }
+#else
+ ROUND( 0,a,b,c,d,e,f,g,h)
+ ROUND( 1,h,a,b,c,d,e,f,g)
+ ROUND( 2,g,h,a,b,c,d,e,f)
+ ROUND( 3,f,g,h,a,b,c,d,e)
+ ROUND( 4,e,f,g,h,a,b,c,d)
+ ROUND( 5,d,e,f,g,h,a,b,c)
+ ROUND( 6,c,d,e,f,g,h,a,b)
+ ROUND( 7,b,c,d,e,f,g,h,a)
+
+ ROUND( 8,a,b,c,d,e,f,g,h)
+ ROUND( 9,h,a,b,c,d,e,f,g)
+ ROUND(10,g,h,a,b,c,d,e,f)
+ ROUND(11,f,g,h,a,b,c,d,e)
+ ROUND(12,e,f,g,h,a,b,c,d)
+ ROUND(13,d,e,f,g,h,a,b,c)
+ ROUND(14,c,d,e,f,g,h,a,b)
+ ROUND(15,b,c,d,e,f,g,h,a)
+
+ ROUND(16,a,b,c,d,e,f,g,h)
+ ROUND(17,h,a,b,c,d,e,f,g)
+ ROUND(18,g,h,a,b,c,d,e,f)
+ ROUND(19,f,g,h,a,b,c,d,e)
+ ROUND(20,e,f,g,h,a,b,c,d)
+ ROUND(21,d,e,f,g,h,a,b,c)
+ ROUND(22,c,d,e,f,g,h,a,b)
+ ROUND(23,b,c,d,e,f,g,h,a)
+
+ ROUND(24,a,b,c,d,e,f,g,h)
+ ROUND(25,h,a,b,c,d,e,f,g)
+ ROUND(26,g,h,a,b,c,d,e,f)
+ ROUND(27,f,g,h,a,b,c,d,e)
+ ROUND(28,e,f,g,h,a,b,c,d)
+ ROUND(29,d,e,f,g,h,a,b,c)
+ ROUND(30,c,d,e,f,g,h,a,b)
+ ROUND(31,b,c,d,e,f,g,h,a)
+
+ ROUND(32,a,b,c,d,e,f,g,h)
+ ROUND(33,h,a,b,c,d,e,f,g)
+ ROUND(34,g,h,a,b,c,d,e,f)
+ ROUND(35,f,g,h,a,b,c,d,e)
+ ROUND(36,e,f,g,h,a,b,c,d)
+ ROUND(37,d,e,f,g,h,a,b,c)
+ ROUND(38,c,d,e,f,g,h,a,b)
+ ROUND(39,b,c,d,e,f,g,h,a)
+
+ ROUND(40,a,b,c,d,e,f,g,h)
+ ROUND(41,h,a,b,c,d,e,f,g)
+ ROUND(42,g,h,a,b,c,d,e,f)
+ ROUND(43,f,g,h,a,b,c,d,e)
+ ROUND(44,e,f,g,h,a,b,c,d)
+ ROUND(45,d,e,f,g,h,a,b,c)
+ ROUND(46,c,d,e,f,g,h,a,b)
+ ROUND(47,b,c,d,e,f,g,h,a)
+
+ ROUND(48,a,b,c,d,e,f,g,h)
+ ROUND(49,h,a,b,c,d,e,f,g)
+ ROUND(50,g,h,a,b,c,d,e,f)
+ ROUND(51,f,g,h,a,b,c,d,e)
+ ROUND(52,e,f,g,h,a,b,c,d)
+ ROUND(53,d,e,f,g,h,a,b,c)
+ ROUND(54,c,d,e,f,g,h,a,b)
+ ROUND(55,b,c,d,e,f,g,h,a)
+
+ ROUND(56,a,b,c,d,e,f,g,h)
+ ROUND(57,h,a,b,c,d,e,f,g)
+ ROUND(58,g,h,a,b,c,d,e,f)
+ ROUND(59,f,g,h,a,b,c,d,e)
+ ROUND(60,e,f,g,h,a,b,c,d)
+ ROUND(61,d,e,f,g,h,a,b,c)
+ ROUND(62,c,d,e,f,g,h,a,b)
+ ROUND(63,b,c,d,e,f,g,h,a)
+#endif
+
+ 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 ROUND
+}
+
+#undef s0
+#undef s1
+#undef S0
+#undef S1
+
+void
+SHA256_Update(SHA256Context *ctx, const unsigned char *input,
+ unsigned int inputLen)
+{
+ unsigned int inBuf = ctx->sizeLo & 0x3f;
+ if (!inputLen)
+ return;
+
+ /* Add inputLen into the count of bytes processed, before processing */
+ if ((ctx->sizeLo += inputLen) < inputLen)
+ ctx->sizeHi++;
+
+ /* if data already in buffer, attemp to fill rest of buffer */
+ if (inBuf) {
+ unsigned int todo = SHA256_BLOCK_LENGTH - inBuf;
+ if (inputLen < todo)
+ todo = inputLen;
+ memcpy(B + inBuf, input, todo);
+ input += todo;
+ inputLen -= todo;
+ if (inBuf + todo == SHA256_BLOCK_LENGTH)
+ SHA256_Compress(ctx);
+ }
+
+ /* if enough data to fill one or more whole buffers, process them. */
+ while (inputLen >= SHA256_BLOCK_LENGTH) {
+ memcpy(B, input, SHA256_BLOCK_LENGTH);
+ input += SHA256_BLOCK_LENGTH;
+ inputLen -= SHA256_BLOCK_LENGTH;
+ SHA256_Compress(ctx);
+ }
+ /* if data left over, fill it into buffer */
+ if (inputLen)
+ memcpy(B, input, inputLen);
+}
+
+void
+SHA256_End(SHA256Context *ctx, unsigned char *digest,
+ unsigned int *digestLen, unsigned int maxDigestLen)
+{
+ unsigned int inBuf = ctx->sizeLo & 0x3f;
+ unsigned int padLen = (inBuf < 56) ? (56 - inBuf) : (56 + 64 - inBuf);
+ PRUint32 hi, lo;
+#ifdef SWAP4MASK
+ PRUint32 t1;
+#endif
+
+ hi = (ctx->sizeHi << 3) | (ctx->sizeLo >> 29);
+ lo = (ctx->sizeLo << 3);
+
+ SHA256_Update(ctx, pad, padLen);
+
+#if defined(IS_LITTLE_ENDIAN)
+ W[14] = SHA_HTONL(hi);
+ W[15] = SHA_HTONL(lo);
+#else
+ W[14] = hi;
+ W[15] = lo;
+#endif
+ SHA256_Compress(ctx);
+
+ /* now output the answer */
+#if defined(IS_LITTLE_ENDIAN)
+ BYTESWAP4(H[0]);
+ BYTESWAP4(H[1]);
+ BYTESWAP4(H[2]);
+ BYTESWAP4(H[3]);
+ BYTESWAP4(H[4]);
+ BYTESWAP4(H[5]);
+ BYTESWAP4(H[6]);
+ BYTESWAP4(H[7]);
+#endif
+ padLen = PR_MIN(SHA256_LENGTH, maxDigestLen);
+ memcpy(digest, H, padLen);
+ if (digestLen)
+ *digestLen = padLen;
+}
+
+void
+SHA256_EndRaw(SHA256Context *ctx, unsigned char *digest,
+ unsigned int *digestLen, unsigned int maxDigestLen)
+{
+ PRUint32 h[8];
+ unsigned int len;
+#ifdef SWAP4MASK
+ PRUint32 t1;
+#endif
+
+ memcpy(h, ctx->h, sizeof(h));
+
+#if defined(IS_LITTLE_ENDIAN)
+ BYTESWAP4(h[0]);
+ BYTESWAP4(h[1]);
+ BYTESWAP4(h[2]);
+ BYTESWAP4(h[3]);
+ BYTESWAP4(h[4]);
+ BYTESWAP4(h[5]);
+ BYTESWAP4(h[6]);
+ BYTESWAP4(h[7]);
+#endif
+
+ len = PR_MIN(SHA256_LENGTH, maxDigestLen);
+ memcpy(digest, h, len);
+ if (digestLen)
+ *digestLen = len;
+}
+
+SECStatus
+SHA256_HashBuf(unsigned char *dest, const unsigned char *src,
+ PRUint32 src_length)
+{
+ SHA256Context ctx;
+ unsigned int outLen;
+
+ SHA256_Begin(&ctx);
+ SHA256_Update(&ctx, src, src_length);
+ SHA256_End(&ctx, dest, &outLen, SHA256_LENGTH);
+ memset(&ctx, 0, sizeof ctx);
+
+ return SECSuccess;
+}