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Prettify code for github publishing

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This commit is contained in:
Natalia Portillo
2015-02-03 04:15:33 +00:00
parent 4442ed1d19
commit 01f512b978
6 changed files with 91 additions and 69 deletions
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8
SharpHash/Checksums/Adler32Context.cs
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@@ -26,8 +26,8 @@ namespace SharpHash.Checksums
{ {
public class Adler32Context public class Adler32Context
{ {
private UInt16 sum1, sum2; UInt16 sum1, sum2;
private const UInt16 AdlerModule = 65521; const UInt16 AdlerModule = 65521;
/// <summary> /// <summary>
/// Initializes the Adler-32 sums /// Initializes the Adler-32 sums
@@ -134,7 +134,7 @@ namespace SharpHash.Checksums
/// <param name="data">Data buffer.</param> /// <param name="data">Data buffer.</param>
/// <param name="len">Length of the data buffer to hash.</param> /// <param name="len">Length of the data buffer to hash.</param>
/// <param name="hash">Byte array of the hash value.</param> /// <param name="hash">Byte array of the hash value.</param>
public string Data(byte[] data, uint len, out byte[] hash) public static string Data(byte[] data, uint len, out byte[] hash)
{ {
UInt16 localSum1, localSum2; UInt16 localSum1, localSum2;
UInt32 finalSum; UInt32 finalSum;
@@ -167,7 +167,7 @@ namespace SharpHash.Checksums
/// </summary> /// </summary>
/// <param name="data">Data buffer.</param> /// <param name="data">Data buffer.</param>
/// <param name="hash">Byte array of the hash value.</param> /// <param name="hash">Byte array of the hash value.</param>
public string Data(byte[] data, out byte[] hash) public static string Data(byte[] data, out byte[] hash)
{ {
return Data(data, (uint)data.Length, out hash); return Data(data, (uint)data.Length, out hash);
} }

16
SharpHash/Checksums/FletcherContext.cs
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@@ -26,9 +26,9 @@ namespace SharpHash.Checksums
{ {
public class Fletcher32Context public class Fletcher32Context
{ {
private UInt16 sum1, sum2; UInt16 sum1, sum2;
private byte oddValue; byte oddValue;
private bool inodd; bool inodd;
/// <summary> /// <summary>
/// Initializes the Fletcher32 sums /// Initializes the Fletcher32 sums
@@ -224,7 +224,7 @@ namespace SharpHash.Checksums
/// <param name="data">Data buffer.</param> /// <param name="data">Data buffer.</param>
/// <param name="len">Length of the data buffer to hash.</param> /// <param name="len">Length of the data buffer to hash.</param>
/// <param name="hash">Byte array of the hash value.</param> /// <param name="hash">Byte array of the hash value.</param>
public string Data(byte[] data, uint len, out byte[] hash) public static string Data(byte[] data, uint len, out byte[] hash)
{ {
UInt16 localSum1, localSum2, block; UInt16 localSum1, localSum2, block;
UInt32 finalSum; UInt32 finalSum;
@@ -279,7 +279,7 @@ namespace SharpHash.Checksums
/// </summary> /// </summary>
/// <param name="data">Data buffer.</param> /// <param name="data">Data buffer.</param>
/// <param name="hash">Byte array of the hash value.</param> /// <param name="hash">Byte array of the hash value.</param>
public string Data(byte[] data, out byte[] hash) public static string Data(byte[] data, out byte[] hash)
{ {
return Data(data, (uint)data.Length, out hash); return Data(data, (uint)data.Length, out hash);
} }
@@ -287,7 +287,7 @@ namespace SharpHash.Checksums
public class Fletcher16Context public class Fletcher16Context
{ {
private byte sum1, sum2; byte sum1, sum2;
/// <summary> /// <summary>
/// Initializes the Fletcher16 sums /// Initializes the Fletcher16 sums
@@ -399,7 +399,7 @@ namespace SharpHash.Checksums
/// <param name="data">Data buffer.</param> /// <param name="data">Data buffer.</param>
/// <param name="len">Length of the data buffer to hash.</param> /// <param name="len">Length of the data buffer to hash.</param>
/// <param name="hash">Byte array of the hash value.</param> /// <param name="hash">Byte array of the hash value.</param>
public string Data(byte[] data, uint len, out byte[] hash) public static string Data(byte[] data, uint len, out byte[] hash)
{ {
byte localSum1, localSum2; byte localSum1, localSum2;
UInt16 finalSum; UInt16 finalSum;
@@ -432,7 +432,7 @@ namespace SharpHash.Checksums
/// </summary> /// </summary>
/// <param name="data">Data buffer.</param> /// <param name="data">Data buffer.</param>
/// <param name="hash">Byte array of the hash value.</param> /// <param name="hash">Byte array of the hash value.</param>
public string Data(byte[] data, out byte[] hash) public static string Data(byte[] data, out byte[] hash)
{ {
return Data(data, (uint)data.Length, out hash); return Data(data, (uint)data.Length, out hash);
} }

2
SharpHash/Checksums/SHA3Context.cs
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@@ -37,7 +37,7 @@ namespace SharpHash.Checksums
/// </summary> /// </summary>
public void Init() public void Init()
{ {
_sha3Provider = new SHA3Unmanaged(512);; _sha3Provider = new SHA3Unmanaged(512);
} }
/// <summary> /// <summary>

66
SharpHash/Checksums/SpamSumContext.cs
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@@ -45,18 +45,21 @@ namespace SharpHash.Checksums
const UInt32 SPAMSUM_LENGTH = 64; const UInt32 SPAMSUM_LENGTH = 64;
const UInt32 FUZZY_MAX_RESULT = (2 * SPAMSUM_LENGTH + 20); const UInt32 FUZZY_MAX_RESULT = (2 * SPAMSUM_LENGTH + 20);
//"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; //"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
readonly byte[] b64 = {0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, readonly byte[] b64 =
{0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,
0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,
0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E,
0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,
0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33, 0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33,
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2B, 0x2F}; 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2B, 0x2F
};
struct roll_state struct roll_state
{ {
public byte[] window; // ROLLING_WINDOW public byte[] window;
// ROLLING_WINDOW
public UInt32 h1; public UInt32 h1;
public UInt32 h2; public UInt32 h2;
public UInt32 h3; public UInt32 h3;
@@ -72,7 +75,8 @@ namespace SharpHash.Checksums
{ {
public UInt32 h; public UInt32 h;
public UInt32 halfh; public UInt32 halfh;
public byte[] digest; // SPAMSUM_LENGTH public byte[] digest;
// SPAMSUM_LENGTH
public byte halfdigest; public byte halfdigest;
public UInt32 dlen; public UInt32 dlen;
} }
@@ -81,7 +85,8 @@ namespace SharpHash.Checksums
{ {
public UInt32 bhstart; public UInt32 bhstart;
public UInt32 bhend; public UInt32 bhend;
public blockhash_context[] bh; //NUM_BLOCKHASHES public blockhash_context[] bh;
//NUM_BLOCKHASHES
public UInt64 total_size; public UInt64 total_size;
public roll_state roll; public roll_state roll;
} }
@@ -227,14 +232,16 @@ namespace SharpHash.Checksums
/* We have hit a reset point. We now emit hashes which are /* We have hit a reset point. We now emit hashes which are
* based on all characters in the piece of the message between * based on all characters in the piece of the message between
* the last reset point and this one */ * the last reset point and this one */
if (0 == self.bh[i].dlen) { if (0 == self.bh[i].dlen)
{
/* Can only happen 30 times. */ /* Can only happen 30 times. */
/* First step for this blocksize. Clone next. */ /* First step for this blocksize. Clone next. */
fuzzy_try_fork_blockhash(); fuzzy_try_fork_blockhash();
} }
self.bh[i].digest[self.bh[i].dlen] = b64[self.bh[i].h % 64]; self.bh[i].digest[self.bh[i].dlen] = b64[self.bh[i].h % 64];
self.bh[i].halfdigest = b64[self.bh[i].halfh % 64]; self.bh[i].halfdigest = b64[self.bh[i].halfh % 64];
if (self.bh[i].dlen < SPAMSUM_LENGTH - 1) { if (self.bh[i].dlen < SPAMSUM_LENGTH - 1)
{
/* We can have a problem with the tail overflowing. The /* We can have a problem with the tail overflowing. The
* easiest way to cope with this is to only reset the * easiest way to cope with this is to only reset the
* normal hash if we have room for more characters in * normal hash if we have room for more characters in
@@ -243,11 +250,13 @@ namespace SharpHash.Checksums
* */ * */
self.bh[i].digest[++(self.bh[i].dlen)] = 0; self.bh[i].digest[++(self.bh[i].dlen)] = 0;
self.bh[i].h = HASH_INIT; self.bh[i].h = HASH_INIT;
if (self.bh[i].dlen < SPAMSUM_LENGTH / 2) { if (self.bh[i].dlen < SPAMSUM_LENGTH / 2)
{
self.bh[i].halfh = HASH_INIT; self.bh[i].halfh = HASH_INIT;
self.bh[i].halfdigest = 0; self.bh[i].halfdigest = 0;
} }
} else }
else
fuzzy_try_reduce_blockhash(); fuzzy_try_reduce_blockhash();
} }
} }
@@ -289,9 +298,11 @@ namespace SharpHash.Checksums
result_off = 0; result_off = 0;
/* Initial blocksize guess. */ /* Initial blocksize guess. */
while ((UInt64)SSDEEP_BS(bi) * SPAMSUM_LENGTH < self.total_size) { while ((UInt64)SSDEEP_BS(bi) * SPAMSUM_LENGTH < self.total_size)
{
++bi; ++bi;
if (bi >= NUM_BLOCKHASHES) { if (bi >= NUM_BLOCKHASHES)
{
throw new OverflowException("The input exceeds data types."); throw new OverflowException("The input exceeds data types.");
} }
} }
@@ -331,18 +342,22 @@ namespace SharpHash.Checksums
if (i < 3 || if (i < 3 ||
result[result_off] != result[result_off - 1] || result[result_off] != result[result_off - 1] ||
result[result_off] != result[result_off - 2] || result[result_off] != result[result_off - 2] ||
result[result_off] != result[result_off-3]) { result[result_off] != result[result_off - 3])
{
++result_off; ++result_off;
--remain; --remain;
} }
} else if (self.bh[bi].digest[i] != 0) { }
else if (self.bh[bi].digest[i] != 0)
{
if (remain <= 0) if (remain <= 0)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
result[result_off] = self.bh[bi].digest[i]; result[result_off] = self.bh[bi].digest[i];
if (i < 3 || if (i < 3 ||
result[result_off] != result[result_off - 1] || result[result_off] != result[result_off - 1] ||
result[result_off] != result[result_off - 2] || result[result_off] != result[result_off - 2] ||
result[result_off] != result[result_off-3]) { result[result_off] != result[result_off - 3])
{
++result_off; ++result_off;
--remain; --remain;
} }
@@ -361,7 +376,8 @@ namespace SharpHash.Checksums
result_off += i; result_off += i;
remain -= i; remain -= i;
if (h != 0) { if (h != 0)
{
if (remain <= 0) if (remain <= 0)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
h = self.bh[bi].halfh; h = self.bh[bi].halfh;
@@ -369,26 +385,32 @@ namespace SharpHash.Checksums
if (i < 3 || if (i < 3 ||
result[result_off] != result[result_off - 1] || result[result_off] != result[result_off - 1] ||
result[result_off] != result[result_off - 2] || result[result_off] != result[result_off - 2] ||
result[result_off] != result[result_off-3]) { result[result_off] != result[result_off - 3])
{
++result_off; ++result_off;
--remain; --remain;
} }
} else { }
else
{
i = self.bh[bi].halfdigest; i = self.bh[bi].halfdigest;
if (i != 0) { if (i != 0)
{
if (remain <= 0) if (remain <= 0)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
result[result_off] = (byte)i; result[result_off] = (byte)i;
if (i < 3 || if (i < 3 ||
result[result_off] != result[result_off - 1] || result[result_off] != result[result_off - 1] ||
result[result_off] != result[result_off - 2] || result[result_off] != result[result_off - 2] ||
result[result_off] != result[result_off-3]) { result[result_off] != result[result_off - 3])
{
++result_off; ++result_off;
--remain; --remain;
} }
} }
} }
} else if (h != 0) }
else if (h != 0)
{ {
if (self.bh[bi].dlen != 0) if (self.bh[bi].dlen != 0)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
@@ -427,7 +449,7 @@ namespace SharpHash.Checksums
/// Gets the hash of a file /// Gets the hash of a file
/// </summary> /// </summary>
/// <param name="filename">File path.</param> /// <param name="filename">File path.</param>
public byte[] File(string filename) public static byte[] File(string filename)
{ {
// SpamSum does not have a binary representation, or so it seems // SpamSum does not have a binary representation, or so it seems
throw new NotImplementedException("SpamSum does not have a binary representation."); throw new NotImplementedException("SpamSum does not have a binary representation.");
@@ -438,7 +460,7 @@ namespace SharpHash.Checksums
/// </summary> /// </summary>
/// <param name="filename">File path.</param> /// <param name="filename">File path.</param>
/// <param name="hash">Byte array of the hash value.</param> /// <param name="hash">Byte array of the hash value.</param>
public string File(string filename, out byte[] hash) public static string File(string filename, out byte[] hash)
{ {
// SpamSum does not have a binary representation, or so it seems // SpamSum does not have a binary representation, or so it seems
throw new NotImplementedException("Not yet implemented."); throw new NotImplementedException("Not yet implemented.");

8
SharpHash/Program.cs
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@@ -55,11 +55,11 @@ namespace SharpHash
FileStream fileStream = new FileStream(args[0], FileMode.Open, FileAccess.Read); FileStream fileStream = new FileStream(args[0], FileMode.Open, FileAccess.Read);
Int64 bufferSize = 131072; const Int64 bufferSize = 131072;
byte[] dataBuffer = new byte[bufferSize]; byte[] dataBuffer;
Console.WriteLine("Checking for magic's file executable in path"); Console.WriteLine("Checking for magic's file executable in path");
bool thereIsMagic = false; bool thereIsMagic;
try try
{ {
@@ -276,7 +276,7 @@ namespace SharpHash
fileStream.Close(); fileStream.Close();
} }
private static string stringify(byte[] hash) static string stringify(byte[] hash)
{ {
StringBuilder hashOutput = new StringBuilder(); StringBuilder hashOutput = new StringBuilder();