Fixing the previous commit.

test/test-automation/fuzzer/utl_crc32.c

@@ -0,0 +1,125 @@
+
+#include "utl_crc32.h"
+
+int utl_crc32Init(CRC32_CTX *crcContext)
+{
+  int i,j;
+  CrcUint32 c;
+
+  /* Sanity check context pointer */
+  if (crcContext==NULL) {
+   return(-1);
+  }  
+ 
+  /*
+   * Build auxiliary table for parallel byte-at-a-time CRC-32 
+   */
+#ifdef ORIGINAL_METHOD
+  for (i = 0; i < 256; ++i) {
+    for (c = i << 24, j = 8; j > 0; --j) {
+      c = c & 0x80000000 ? (c << 1) ^ CRC32_POLY : (c << 1);
+    }
+    crcContext->crc32_table[i] = c;
+  }
+#else
+  for (i=0; i<256; i++) {
+   c = i;
+   for (j=8; j>0; j--) {
+    if (c & 1) {
+     c = (c >> 1) ^ CRC32_POLY;
+    } else {
+     c >>= 1;
+    }
+   }
+   crcContext->crc32_table[i] = c;
+  }
+#endif
+  
+  return(0);
+}
+
+/* Complete CRC32 calculation on a memory block */
+
+int utl_crc32Calc(CRC32_CTX * crcContext, CrcUint8 *inBuf, CrcUint32 inLen, CrcUint32 *crc32)
+{
+  if (utl_crc32CalcStart(crcContext,crc32)) {
+   return(-1);
+  }
+  if (utl_crc32CalcBuffer(crcContext, inBuf, inLen, crc32)) {
+   return(-1);
+  }
+  if (utl_crc32CalcEnd(crcContext, crc32)) {
+   return(-1);
+  } 
+  return(0);
+}
+
+/* Start crc calculation */
+
+int utl_crc32CalcStart(CRC32_CTX * crcContext, CrcUint32 *crc32)
+{
+  /* Sanity check pointers */
+  if (crcContext==NULL) {
+   *crc32=0;
+   return(-1);
+  }  
+
+  /*
+   * Preload shift register, per CRC-32 spec 
+   */
+  *crc32 = 0xffffffff;
+
+  return(0);
+}
+
+/* Finish crc calculation */
+
+int utl_crc32CalcEnd(CRC32_CTX * crcContext, CrcUint32 *crc32)
+{
+  /*
+   * Return complement, per CRC-32 spec 
+   */
+  *crc32 = (~(*crc32));
+
+  return(0);
+}
+
+/* Include memory block in crc */
+
+int utl_crc32CalcBuffer(CRC32_CTX * crcContext, CrcUint8 *inBuf, CrcUint32 inLen, CrcUint32 *crc32)
+{
+  CrcUint8    *p;
+  register CrcUint32    crc;
+
+  /* Sanity check pointers */
+  if (crcContext==NULL) {
+   *crc32=0;
+   return(-1);
+  }  
+
+
+  /*
+   * Calculate CRC from data 
+   */
+  crc = *crc32;
+  for (p = inBuf; inLen > 0; ++p, --inLen) {
+#ifdef ORIGINAL_METHOD  
+    crc = (crc << 8) ^ crcContext->crc32_table[(crc >> 24) ^ *p];
+#else
+    crc = ((crc >> 8) & 0x00FFFFFF) ^ crcContext->crc32_table[ (crc ^ *p) & 0xFF ];
+#endif         
+  }  
+  *crc32 = crc;
+  
+  return(0);
+}
+
+int utl_crc32Done(CRC32_CTX * crcContext)
+{
+  /* Sanity check context pointer */
+  if (crcContext==NULL) {
+   return(-1);
+  }  
+
+  return(0);
+}