MD5: fixing indentation and code style

diff --git a/lib/md5.c b/lib/md5.c
index 882ed7a13452535e561be71d88a4288d0bda42dc..f3d6e079d616a5d794e75dbda98e23becdd94d4a 100644 (file)
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -24,13 +24,13 @@ void byteReverse(unsigned char *buf, unsigned longs);
  */
 void byteReverse(unsigned char *buf, unsigned longs)
 {
-    u32 t;
-    do {
-       t = (u32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
-           ((unsigned) buf[1] << 8 | buf[0]);
-       *(u32 *) buf = t;
-       buf += 4;
-    } while (--longs);
+  u32 t;
+  do {
+    t = (u32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
+       ((unsigned) buf[1] << 8 | buf[0]);
+    *(u32 *) buf = t;
+    buf += 4;
+  } while (--longs);
 }
 #endif
 
@@ -38,112 +38,122 @@ void byteReverse(unsigned char *buf, unsigned longs)
  * Start MD5 accumulation.  Set bit count to 0 and buffer to mysterious
  * initialization constants.
  */
-void md5_init(md5_context *ctx)
+void
+md5_init(md5_context *ctx)
 {
-    ctx->buf[0] = 0x67452301;
-    ctx->buf[1] = 0xefcdab89;
-    ctx->buf[2] = 0x98badcfe;
-    ctx->buf[3] = 0x10325476;
+  ctx->buf[0] = 0x67452301;
+  ctx->buf[1] = 0xefcdab89;
+  ctx->buf[2] = 0x98badcfe;
+  ctx->buf[3] = 0x10325476;
 
-    ctx->bits[0] = 0;
-    ctx->bits[1] = 0;
+  ctx->bits[0] = 0;
+  ctx->bits[1] = 0;
 }
 
 /*
  * Update context to reflect the concatenation of another buffer full
  * of bytes.
  */
-void md5_update(md5_context *ctx, unsigned char const *buf, unsigned len)
+void
+md5_update(md5_context *ctx, unsigned char const *buf, unsigned len)
 {
-    u32 t;
+  u32 t;
 
-    /* Update bitcount */
+  /* Update bitcount */
 
-    t = ctx->bits[0];
-    if ((ctx->bits[0] = t + ((u32) len << 3)) < t)
-       ctx->bits[1]++;         /* Carry from low to high */
-    ctx->bits[1] += len >> 29;
+  t = ctx->bits[0];
+  if ((ctx->bits[0] = t + ((u32) len << 3)) < t)
+    ctx->bits[1]++;            /* Carry from low to high */
+  ctx->bits[1] += len >> 29;
 
-    t = (t >> 3) & 0x3f;       /* Bytes already in shsInfo->data */
+  t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
 
-    /* Handle any leading odd-sized chunks */
+  /* Handle any leading odd-sized chunks */
 
-    if (t) {
-       unsigned char *p = (unsigned char *) ctx->in + t;
+  if (t)
+  {
+    unsigned char *p = (unsigned char *) ctx->in + t;
 
-       t = 64 - t;
-       if (len < t) {
-           memcpy(p, buf, len);
-           return;
-       }
-       memcpy(p, buf, t);
-       byteReverse(ctx->in, 16);
-       md5_transform(ctx->buf, (u32 *) ctx->in);
-       buf += t;
-       len -= t;
-    }
-    /* Process data in 64-byte chunks */
-
-    while (len >= 64) {
-       memcpy(ctx->in, buf, 64);
-       byteReverse(ctx->in, 16);
-       md5_transform(ctx->buf, (u32 *) ctx->in);
-       buf += 64;
-       len -= 64;
+    t = 64 - t;
+    if (len < t)
+    {
+      memcpy(p, buf, len);
+      return;
     }
+    memcpy(p, buf, t);
+    byteReverse(ctx->in, 16);
+    md5_transform(ctx->buf, (u32 *) ctx->in);
+    buf += t;
+    len -= t;
+  }
+  /* Process data in 64-byte chunks */
 
-    /* Handle any remaining bytes of data. */
+  while (len >= 64)
+  {
+    memcpy(ctx->in, buf, 64);
+    byteReverse(ctx->in, 16);
+    md5_transform(ctx->buf, (u32 *) ctx->in);
+    buf += 64;
+    len -= 64;
+  }
 
-    memcpy(ctx->in, buf, len);
+  /* Handle any remaining bytes of data. */
+
+  memcpy(ctx->in, buf, len);
 }
 
 /*
  * Final wrapup - pad to 64-byte boundary with the bit pattern 
  * 1 0* (64-bit count of bits processed, MSB-first)
  */
-byte *md5_final(md5_context *ctx)
+byte *
+md5_final(md5_context *ctx)
 {
-    unsigned count;
-    unsigned char *p;
+  unsigned count;
+  unsigned char *p;
 
-    /* Compute number of bytes mod 64 */
-    count = (ctx->bits[0] >> 3) & 0x3F;
+  /* Compute number of bytes mod 64 */
+  count = (ctx->bits[0] >> 3) & 0x3F;
 
-    /* Set the first char of padding to 0x80.  This is safe since there is
+  /* Set the first char of padding to 0x80.  This is safe since there is
        always at least one byte free */
-    p = ctx->in + count;
-    *p++ = 0x80;
-
-    /* Bytes of padding needed to make 64 bytes */
-    count = 64 - 1 - count;
-
-    /* Pad out to 56 mod 64 */
-    if (count < 8) {
-       /* Two lots of padding:  Pad the first block to 64 bytes */
-       memset(p, 0, count);
-       byteReverse(ctx->in, 16);
-       md5_transform(ctx->buf, (u32 *) ctx->in);
-
-       /* Now fill the next block with 56 bytes */
-       memset(ctx->in, 0, 56);
-    } else {
-       /* Pad block to 56 bytes */
-       memset(p, 0, count - 8);
-    }
-    byteReverse(ctx->in, 14);
+  p = ctx->in + count;
+  *p++ = 0x80;
 
-    /* Append length in bits and transform */
-    ((u32 *) ctx->in)[14] = ctx->bits[0];
-    ((u32 *) ctx->in)[15] = ctx->bits[1];
+  /* Bytes of padding needed to make 64 bytes */
+  count = 64 - 1 - count;
 
+  /* Pad out to 56 mod 64 */
+  if (count < 8)
+  {
+    /* Two lots of padding:  Pad the first block to 64 bytes */
+    memset(p, 0, count);
+    byteReverse(ctx->in, 16);
     md5_transform(ctx->buf, (u32 *) ctx->in);
-    byteReverse((unsigned char *) ctx->buf, 4);
 
-    return (byte*) ctx->buf;
+    /* Now fill the next block with 56 bytes */
+    memset(ctx->in, 0, 56);
+  }
+  else
+  {
+    /* Pad block to 56 bytes */
+    memset(p, 0, count - 8);
+  }
+  byteReverse(ctx->in, 14);
+
+  /* Append length in bits and transform */
+  ((u32 *) ctx->in)[14] = ctx->bits[0];
+  ((u32 *) ctx->in)[15] = ctx->bits[1];
+
+  md5_transform(ctx->buf, (u32 *) ctx->in);
+  byteReverse((unsigned char *) ctx->buf, 4);
+
+  return (byte*) ctx->buf;
 }
 
 /* I am a hard paranoid */
-void md5_erase_ctx(md5_context *ctx)
+void
+md5_erase_ctx(md5_context *ctx)
 {
   memset((char *) ctx, 0, sizeof(*ctx));       /* In case it's sensitive */
 }
@@ -158,94 +168,95 @@ void md5_erase_ctx(md5_context *ctx)
 
 /* This is the central step in the MD5 algorithm. */
 #define MD5STEP(f, w, x, y, z, data, s) \
-       ( w += f(x, y, z) + data,  w = w<<s | w>>(32-s),  w += x )
+    ( w += f(x, y, z) + data,  w = w<<s | w>>(32-s),  w += x )
 
 /*
  * The core of the MD5 algorithm, this alters an existing MD5 hash to
  * reflect the addition of 16 longwords of new data.  MD5Update blocks
  * the data and converts bytes into longwords for this routine.
  */
-void md5_transform(u32 buf[4], u32 const in[16])
+void
+md5_transform(u32 buf[4], u32 const in[16])
 {
-    register u32 a, b, c, d;
-
-    a = buf[0];
-    b = buf[1];
-    c = buf[2];
-    d = buf[3];
-
-    MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
-    MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
-    MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
-    MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
-    MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
-    MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
-    MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
-    MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
-    MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
-    MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
-    MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
-    MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
-    MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
-    MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
-    MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
-    MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
-
-    MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
-    MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
-    MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
-    MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
-    MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
-    MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
-    MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
-    MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
-    MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
-    MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
-    MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
-    MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
-    MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
-    MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
-    MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
-    MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
-
-    MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
-    MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
-    MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
-    MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
-    MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
-    MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
-    MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
-    MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
-    MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
-    MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
-    MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
-    MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
-    MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
-    MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
-    MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
-    MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
-
-    MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
-    MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
-    MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
-    MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
-    MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
-    MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
-    MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
-    MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
-    MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
-    MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
-    MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
-    MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
-    MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
-    MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
-    MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
-    MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
-
-    buf[0] += a;
-    buf[1] += b;
-    buf[2] += c;
-    buf[3] += d;
+  register u32 a, b, c, d;
+
+  a = buf[0];
+  b = buf[1];
+  c = buf[2];
+  d = buf[3];
+
+  MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
+  MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
+  MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
+  MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
+  MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
+  MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
+  MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
+  MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
+  MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
+  MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
+  MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
+  MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
+  MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
+  MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
+  MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
+  MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
+
+  MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
+  MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
+  MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
+  MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
+  MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
+  MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
+  MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
+  MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
+  MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
+  MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
+  MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
+  MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
+  MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
+  MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
+  MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
+  MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
+
+  MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
+  MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
+  MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
+  MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
+  MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
+  MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
+  MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
+  MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
+  MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
+  MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
+  MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
+  MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
+  MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
+  MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
+  MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
+  MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
+
+  MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
+  MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
+  MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
+  MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
+  MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
+  MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
+  MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
+  MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
+  MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
+  MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
+  MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
+  MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
+  MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
+  MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
+  MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
+  MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
+
+  buf[0] += a;
+  buf[1] += b;
+  buf[2] += c;
+  buf[3] += d;
 }
 
 /**
@@ -293,13 +304,15 @@ md5_hmac_init(md5_hmac_context *ctx, const byte *key, size_t keylen)
   md5_update(&ctx->octx, buf, MD5_BLOCK_SIZE);
 }
 
-void md5_hmac_update(md5_hmac_context *ctx, const byte *buf, size_t buflen)
+void
+md5_hmac_update(md5_hmac_context *ctx, const byte *buf, size_t buflen)
 {
   // Just update the inner digest
   md5_update(&ctx->ictx, buf, buflen);
 }
 
-byte *md5_hmac_final(md5_hmac_context *ctx)
+byte *
+md5_hmac_final(md5_hmac_context *ctx)
 {
   // Finish the inner digest
   byte *isha = md5_final(&ctx->ictx);