--- /dev/null
+/*
+** 2017-03-08
+**
+** The author disclaims copyright to this source code. In place of
+** a legal notice, here is a blessing:
+**
+** May you do good and not evil.
+** May you find forgiveness for yourself and forgive others.
+** May you share freely, never taking more than you give.
+**
+******************************************************************************
+**
+** This SQLite extension implements a functions that compute SHA1 hashes.
+** Two SQL functions are implemented:
+**
+** sha3(X,SIZE)
+** sha3_query(Y,SIZE)
+**
+** The sha3(X) function computes the SHA3 hash of the input X, or NULL if
+** X is NULL.
+**
+** The sha3_query(Y) function evalutes all queries in the SQL statements of Y
+** and returns a hash of their results.
+*/
+#include "sqlite3ext.h"
+SQLITE_EXTENSION_INIT1
+#include <assert.h>
+#include <string.h>
+#include <stdarg.h>
+typedef sqlite3_uint64 u64;
+
+/******************************************************************************
+** The Hash Engine
+*/
+/*
+** Macros to determine whether the machine is big or little endian,
+** and whether or not that determination is run-time or compile-time.
+**
+** For best performance, an attempt is made to guess at the byte-order
+** using C-preprocessor macros. If that is unsuccessful, or if
+** -DSHA3_BYTEORDER=0 is set, then byte-order is determined
+** at run-time.
+*/
+#ifndef SHA3_BYTEORDER
+# if defined(i386) || defined(__i386__) || defined(_M_IX86) || \
+ defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || \
+ defined(_M_AMD64) || defined(_M_ARM) || defined(__x86) || \
+ defined(__arm__)
+# define SHA3_BYTEORDER 1234
+# elif defined(sparc) || defined(__ppc__)
+# define SHA3_BYTEORDER 4321
+# else
+# define SHA3_BYTEORDER 0
+# endif
+#endif
+
+
+/*
+** State structure for a SHA3 hash in progress
+*/
+typedef struct SHA3Context SHA3Context;
+struct SHA3Context {
+ union {
+ u64 s[25]; /* Keccak state. 5x5 lines of 64 bits each */
+ unsigned char x[1600]; /* ... or 1600 bytes */
+ } u;
+ unsigned nRate; /* Bytes of input accepted per Keccak iteration */
+ unsigned nLoaded; /* Input bytes loaded into u.x[] so far this cycle */
+ unsigned ixMask; /* Insert next input into u.x[nLoaded^ixMask]. */
+};
+
+/*
+** A single step of the Keccak mixing function for a 1600-bit state
+*/
+static void KeccakF1600Step(SHA3Context *p){
+ int i;
+ u64 B0, B1, B2, B3, B4;
+ u64 C0, C1, C2, C3, C4;
+ u64 D0, D1, D2, D3, D4;
+ static const u64 RC[] = {
+ 0x0000000000000001ULL, 0x0000000000008082ULL,
+ 0x800000000000808aULL, 0x8000000080008000ULL,
+ 0x000000000000808bULL, 0x0000000080000001ULL,
+ 0x8000000080008081ULL, 0x8000000000008009ULL,
+ 0x000000000000008aULL, 0x0000000000000088ULL,
+ 0x0000000080008009ULL, 0x000000008000000aULL,
+ 0x000000008000808bULL, 0x800000000000008bULL,
+ 0x8000000000008089ULL, 0x8000000000008003ULL,
+ 0x8000000000008002ULL, 0x8000000000000080ULL,
+ 0x000000000000800aULL, 0x800000008000000aULL,
+ 0x8000000080008081ULL, 0x8000000000008080ULL,
+ 0x0000000080000001ULL, 0x8000000080008008ULL
+ };
+# define A00 (p->u.s[0])
+# define A01 (p->u.s[1])
+# define A02 (p->u.s[2])
+# define A03 (p->u.s[3])
+# define A04 (p->u.s[4])
+# define A10 (p->u.s[5])
+# define A11 (p->u.s[6])
+# define A12 (p->u.s[7])
+# define A13 (p->u.s[8])
+# define A14 (p->u.s[9])
+# define A20 (p->u.s[10])
+# define A21 (p->u.s[11])
+# define A22 (p->u.s[12])
+# define A23 (p->u.s[13])
+# define A24 (p->u.s[14])
+# define A30 (p->u.s[15])
+# define A31 (p->u.s[16])
+# define A32 (p->u.s[17])
+# define A33 (p->u.s[18])
+# define A34 (p->u.s[19])
+# define A40 (p->u.s[20])
+# define A41 (p->u.s[21])
+# define A42 (p->u.s[22])
+# define A43 (p->u.s[23])
+# define A44 (p->u.s[24])
+# define ROL64(a,x) ((a<<x)|(a>>(64-x)))
+
+ for(i=0; i<24; i+=4){
+ C0 = A00^A10^A20^A30^A40;
+ C1 = A01^A11^A21^A31^A41;
+ C2 = A02^A12^A22^A32^A42;
+ C3 = A03^A13^A23^A33^A43;
+ C4 = A04^A14^A24^A34^A44;
+ D0 = C4^ROL64(C1, 1);
+ D1 = C0^ROL64(C2, 1);
+ D2 = C1^ROL64(C3, 1);
+ D3 = C2^ROL64(C4, 1);
+ D4 = C3^ROL64(C0, 1);
+
+ B0 = (A00^D0);
+ B1 = ROL64((A11^D1), 44);
+ B2 = ROL64((A22^D2), 43);
+ B3 = ROL64((A33^D3), 21);
+ B4 = ROL64((A44^D4), 14);
+ A00 = B0 ^((~B1)& B2 );
+ A00 ^= RC[i];
+ A11 = B1 ^((~B2)& B3 );
+ A22 = B2 ^((~B3)& B4 );
+ A33 = B3 ^((~B4)& B0 );
+ A44 = B4 ^((~B0)& B1 );
+
+ B2 = ROL64((A20^D0), 3);
+ B3 = ROL64((A31^D1), 45);
+ B4 = ROL64((A42^D2), 61);
+ B0 = ROL64((A03^D3), 28);
+ B1 = ROL64((A14^D4), 20);
+ A20 = B0 ^((~B1)& B2 );
+ A31 = B1 ^((~B2)& B3 );
+ A42 = B2 ^((~B3)& B4 );
+ A03 = B3 ^((~B4)& B0 );
+ A14 = B4 ^((~B0)& B1 );
+
+ B4 = ROL64((A40^D0), 18);
+ B0 = ROL64((A01^D1), 1);
+ B1 = ROL64((A12^D2), 6);
+ B2 = ROL64((A23^D3), 25);
+ B3 = ROL64((A34^D4), 8);
+ A40 = B0 ^((~B1)& B2 );
+ A01 = B1 ^((~B2)& B3 );
+ A12 = B2 ^((~B3)& B4 );
+ A23 = B3 ^((~B4)& B0 );
+ A34 = B4 ^((~B0)& B1 );
+
+ B1 = ROL64((A10^D0), 36);
+ B2 = ROL64((A21^D1), 10);
+ B3 = ROL64((A32^D2), 15);
+ B4 = ROL64((A43^D3), 56);
+ B0 = ROL64((A04^D4), 27);
+ A10 = B0 ^((~B1)& B2 );
+ A21 = B1 ^((~B2)& B3 );
+ A32 = B2 ^((~B3)& B4 );
+ A43 = B3 ^((~B4)& B0 );
+ A04 = B4 ^((~B0)& B1 );
+
+ B3 = ROL64((A30^D0), 41);
+ B4 = ROL64((A41^D1), 2);
+ B0 = ROL64((A02^D2), 62);
+ B1 = ROL64((A13^D3), 55);
+ B2 = ROL64((A24^D4), 39);
+ A30 = B0 ^((~B1)& B2 );
+ A41 = B1 ^((~B2)& B3 );
+ A02 = B2 ^((~B3)& B4 );
+ A13 = B3 ^((~B4)& B0 );
+ A24 = B4 ^((~B0)& B1 );
+
+ C0 = A00^A20^A40^A10^A30;
+ C1 = A11^A31^A01^A21^A41;
+ C2 = A22^A42^A12^A32^A02;
+ C3 = A33^A03^A23^A43^A13;
+ C4 = A44^A14^A34^A04^A24;
+ D0 = C4^ROL64(C1, 1);
+ D1 = C0^ROL64(C2, 1);
+ D2 = C1^ROL64(C3, 1);
+ D3 = C2^ROL64(C4, 1);
+ D4 = C3^ROL64(C0, 1);
+
+ B0 = (A00^D0);
+ B1 = ROL64((A31^D1), 44);
+ B2 = ROL64((A12^D2), 43);
+ B3 = ROL64((A43^D3), 21);
+ B4 = ROL64((A24^D4), 14);
+ A00 = B0 ^((~B1)& B2 );
+ A00 ^= RC[i+1];
+ A31 = B1 ^((~B2)& B3 );
+ A12 = B2 ^((~B3)& B4 );
+ A43 = B3 ^((~B4)& B0 );
+ A24 = B4 ^((~B0)& B1 );
+
+ B2 = ROL64((A40^D0), 3);
+ B3 = ROL64((A21^D1), 45);
+ B4 = ROL64((A02^D2), 61);
+ B0 = ROL64((A33^D3), 28);
+ B1 = ROL64((A14^D4), 20);
+ A40 = B0 ^((~B1)& B2 );
+ A21 = B1 ^((~B2)& B3 );
+ A02 = B2 ^((~B3)& B4 );
+ A33 = B3 ^((~B4)& B0 );
+ A14 = B4 ^((~B0)& B1 );
+
+ B4 = ROL64((A30^D0), 18);
+ B0 = ROL64((A11^D1), 1);
+ B1 = ROL64((A42^D2), 6);
+ B2 = ROL64((A23^D3), 25);
+ B3 = ROL64((A04^D4), 8);
+ A30 = B0 ^((~B1)& B2 );
+ A11 = B1 ^((~B2)& B3 );
+ A42 = B2 ^((~B3)& B4 );
+ A23 = B3 ^((~B4)& B0 );
+ A04 = B4 ^((~B0)& B1 );
+
+ B1 = ROL64((A20^D0), 36);
+ B2 = ROL64((A01^D1), 10);
+ B3 = ROL64((A32^D2), 15);
+ B4 = ROL64((A13^D3), 56);
+ B0 = ROL64((A44^D4), 27);
+ A20 = B0 ^((~B1)& B2 );
+ A01 = B1 ^((~B2)& B3 );
+ A32 = B2 ^((~B3)& B4 );
+ A13 = B3 ^((~B4)& B0 );
+ A44 = B4 ^((~B0)& B1 );
+
+ B3 = ROL64((A10^D0), 41);
+ B4 = ROL64((A41^D1), 2);
+ B0 = ROL64((A22^D2), 62);
+ B1 = ROL64((A03^D3), 55);
+ B2 = ROL64((A34^D4), 39);
+ A10 = B0 ^((~B1)& B2 );
+ A41 = B1 ^((~B2)& B3 );
+ A22 = B2 ^((~B3)& B4 );
+ A03 = B3 ^((~B4)& B0 );
+ A34 = B4 ^((~B0)& B1 );
+
+ C0 = A00^A40^A30^A20^A10;
+ C1 = A31^A21^A11^A01^A41;
+ C2 = A12^A02^A42^A32^A22;
+ C3 = A43^A33^A23^A13^A03;
+ C4 = A24^A14^A04^A44^A34;
+ D0 = C4^ROL64(C1, 1);
+ D1 = C0^ROL64(C2, 1);
+ D2 = C1^ROL64(C3, 1);
+ D3 = C2^ROL64(C4, 1);
+ D4 = C3^ROL64(C0, 1);
+
+ B0 = (A00^D0);
+ B1 = ROL64((A21^D1), 44);
+ B2 = ROL64((A42^D2), 43);
+ B3 = ROL64((A13^D3), 21);
+ B4 = ROL64((A34^D4), 14);
+ A00 = B0 ^((~B1)& B2 );
+ A00 ^= RC[i+2];
+ A21 = B1 ^((~B2)& B3 );
+ A42 = B2 ^((~B3)& B4 );
+ A13 = B3 ^((~B4)& B0 );
+ A34 = B4 ^((~B0)& B1 );
+
+ B2 = ROL64((A30^D0), 3);
+ B3 = ROL64((A01^D1), 45);
+ B4 = ROL64((A22^D2), 61);
+ B0 = ROL64((A43^D3), 28);
+ B1 = ROL64((A14^D4), 20);
+ A30 = B0 ^((~B1)& B2 );
+ A01 = B1 ^((~B2)& B3 );
+ A22 = B2 ^((~B3)& B4 );
+ A43 = B3 ^((~B4)& B0 );
+ A14 = B4 ^((~B0)& B1 );
+
+ B4 = ROL64((A10^D0), 18);
+ B0 = ROL64((A31^D1), 1);
+ B1 = ROL64((A02^D2), 6);
+ B2 = ROL64((A23^D3), 25);
+ B3 = ROL64((A44^D4), 8);
+ A10 = B0 ^((~B1)& B2 );
+ A31 = B1 ^((~B2)& B3 );
+ A02 = B2 ^((~B3)& B4 );
+ A23 = B3 ^((~B4)& B0 );
+ A44 = B4 ^((~B0)& B1 );
+
+ B1 = ROL64((A40^D0), 36);
+ B2 = ROL64((A11^D1), 10);
+ B3 = ROL64((A32^D2), 15);
+ B4 = ROL64((A03^D3), 56);
+ B0 = ROL64((A24^D4), 27);
+ A40 = B0 ^((~B1)& B2 );
+ A11 = B1 ^((~B2)& B3 );
+ A32 = B2 ^((~B3)& B4 );
+ A03 = B3 ^((~B4)& B0 );
+ A24 = B4 ^((~B0)& B1 );
+
+ B3 = ROL64((A20^D0), 41);
+ B4 = ROL64((A41^D1), 2);
+ B0 = ROL64((A12^D2), 62);
+ B1 = ROL64((A33^D3), 55);
+ B2 = ROL64((A04^D4), 39);
+ A20 = B0 ^((~B1)& B2 );
+ A41 = B1 ^((~B2)& B3 );
+ A12 = B2 ^((~B3)& B4 );
+ A33 = B3 ^((~B4)& B0 );
+ A04 = B4 ^((~B0)& B1 );
+
+ C0 = A00^A30^A10^A40^A20;
+ C1 = A21^A01^A31^A11^A41;
+ C2 = A42^A22^A02^A32^A12;
+ C3 = A13^A43^A23^A03^A33;
+ C4 = A34^A14^A44^A24^A04;
+ D0 = C4^ROL64(C1, 1);
+ D1 = C0^ROL64(C2, 1);
+ D2 = C1^ROL64(C3, 1);
+ D3 = C2^ROL64(C4, 1);
+ D4 = C3^ROL64(C0, 1);
+
+ B0 = (A00^D0);
+ B1 = ROL64((A01^D1), 44);
+ B2 = ROL64((A02^D2), 43);
+ B3 = ROL64((A03^D3), 21);
+ B4 = ROL64((A04^D4), 14);
+ A00 = B0 ^((~B1)& B2 );
+ A00 ^= RC[i+3];
+ A01 = B1 ^((~B2)& B3 );
+ A02 = B2 ^((~B3)& B4 );
+ A03 = B3 ^((~B4)& B0 );
+ A04 = B4 ^((~B0)& B1 );
+
+ B2 = ROL64((A10^D0), 3);
+ B3 = ROL64((A11^D1), 45);
+ B4 = ROL64((A12^D2), 61);
+ B0 = ROL64((A13^D3), 28);
+ B1 = ROL64((A14^D4), 20);
+ A10 = B0 ^((~B1)& B2 );
+ A11 = B1 ^((~B2)& B3 );
+ A12 = B2 ^((~B3)& B4 );
+ A13 = B3 ^((~B4)& B0 );
+ A14 = B4 ^((~B0)& B1 );
+
+ B4 = ROL64((A20^D0), 18);
+ B0 = ROL64((A21^D1), 1);
+ B1 = ROL64((A22^D2), 6);
+ B2 = ROL64((A23^D3), 25);
+ B3 = ROL64((A24^D4), 8);
+ A20 = B0 ^((~B1)& B2 );
+ A21 = B1 ^((~B2)& B3 );
+ A22 = B2 ^((~B3)& B4 );
+ A23 = B3 ^((~B4)& B0 );
+ A24 = B4 ^((~B0)& B1 );
+
+ B1 = ROL64((A30^D0), 36);
+ B2 = ROL64((A31^D1), 10);
+ B3 = ROL64((A32^D2), 15);
+ B4 = ROL64((A33^D3), 56);
+ B0 = ROL64((A34^D4), 27);
+ A30 = B0 ^((~B1)& B2 );
+ A31 = B1 ^((~B2)& B3 );
+ A32 = B2 ^((~B3)& B4 );
+ A33 = B3 ^((~B4)& B0 );
+ A34 = B4 ^((~B0)& B1 );
+
+ B3 = ROL64((A40^D0), 41);
+ B4 = ROL64((A41^D1), 2);
+ B0 = ROL64((A42^D2), 62);
+ B1 = ROL64((A43^D3), 55);
+ B2 = ROL64((A44^D4), 39);
+ A40 = B0 ^((~B1)& B2 );
+ A41 = B1 ^((~B2)& B3 );
+ A42 = B2 ^((~B3)& B4 );
+ A43 = B3 ^((~B4)& B0 );
+ A44 = B4 ^((~B0)& B1 );
+ }
+}
+
+/*
+** Initialize a new hash. iSize determines the size of the hash
+** in bits and should be one of 224, 256, 384, or 512. Or iSize
+** can be zero to use the default hash size of 256 bits.
+*/
+static void SHA3Init(SHA3Context *p, int iSize){
+ memset(p, 0, sizeof(*p));
+ if( iSize>=128 && iSize<=512 ){
+ p->nRate = (1600 - ((iSize + 31)&~31)*2)/8;
+ }else{
+ p->nRate = (1600 - 2*256)/8;
+ }
+#if SHA3_BYTEORDER==1234
+ /* Known to be little-endian at compile-time. No-op */
+#elif SHA3_BYTEORDER==4321
+ p->ixMask = 7; /* Big-endian */
+#else
+ {
+ static unsigned int one = 1;
+ if( 1==*(unsigned char*)&one ){
+ /* Little endian. No byte swapping. */
+ p->ixMask = 0;
+ }else{
+ /* Big endian. Byte swap. */
+ p->ixMask = 7;
+ }
+ }
+#endif
+}
+
+/*
+** Make consecutive calls to the SHA3Update function to add new content
+** to the hash
+*/
+static void SHA3Update(
+ SHA3Context *p,
+ const unsigned char *aData,
+ unsigned int nData
+){
+ unsigned int i = 0;
+#if SHA3_BYTEORDER==1234
+ if( (p->nLoaded % 8)==0 && ((aData - (const unsigned char*)0)&7)==0 ){
+ for(; i+7<nData; i+=8){
+ p->u.s[p->nLoaded/8] ^= *(u64*)&aData[i];
+ p->nLoaded += 8;
+ if( p->nLoaded>=p->nRate ){
+ KeccakF1600Step(p);
+ p->nLoaded = 0;
+ }
+ }
+ }
+#endif
+ for(; i<nData; i++){
+#if SHA1_BYTEORDER==1234
+ p->u.x[p->nLoaded] ^= aData[i];
+#elif SHA3_BYTEORDER==4321
+ p->u.x[p->nLoaded^0x07] ^= aData[i];
+#else
+ p->u.x[p->nLoaded^p->ixMask] ^= aData[i];
+#endif
+ p->nLoaded++;
+ if( p->nLoaded==p->nRate ){
+ KeccakF1600Step(p);
+ p->nLoaded = 0;
+ }
+ }
+}
+
+/*
+** After all content has been added, invoke SHA3Final() to compute
+** the final hash. The function returns a pointer to the binary
+** hash value.
+*/
+static unsigned char *SHA3Final(SHA3Context *p){
+ unsigned int i;
+ if( p->nLoaded==p->nRate-1 ){
+ const unsigned char c1 = 0x86;
+ SHA3Update(p, &c1, 1);
+ }else{
+ const unsigned char c2 = 0x06;
+ const unsigned char c3 = 0x80;
+ SHA3Update(p, &c2, 1);
+ p->nLoaded = p->nRate - 1;
+ SHA3Update(p, &c3, 1);
+ }
+ for(i=0; i<p->nRate; i++){
+ p->u.x[i+p->nRate] = p->u.x[i^p->ixMask];
+ }
+ return &p->u.x[p->nRate];
+}
+/* End of the hashing logic
+*****************************************************************************/
+
+/*
+** Implementation of the sha3(X,SIZE) function.
+**
+** Return a BLOB which is the SIZE-bit SHA3 hash of X. The default
+** size is 256. If X is a BLOB, it is hashed as is.
+** For all other non-NULL types of input, X is converted into a UTF-8 string
+** and the string is hashed without the trailing 0x00 terminator. The hash
+** of a NULL value is NULL.
+*/
+static void sha3Func(
+ sqlite3_context *context,
+ int argc,
+ sqlite3_value **argv
+){
+ SHA3Context cx;
+ int eType = sqlite3_value_type(argv[0]);
+ int nByte = sqlite3_value_bytes(argv[0]);
+ int iSize;
+ if( argc==1 ){
+ iSize = 256;
+ }else{
+ iSize = sqlite3_value_int(argv[1]);
+ if( iSize!=224 && iSize!=256 && iSize!=384 && iSize!=512 ){
+ sqlite3_result_error(context, "SHA3 size should be one of: 224 256 "
+ "384 512", -1);
+ return;
+ }
+ }
+ if( eType==SQLITE_NULL ) return;
+ SHA3Init(&cx, iSize);
+ if( eType==SQLITE_BLOB ){
+ SHA3Update(&cx, sqlite3_value_blob(argv[0]), nByte);
+ }else{
+ SHA3Update(&cx, sqlite3_value_text(argv[0]), nByte);
+ }
+ sqlite3_result_blob(context, SHA3Final(&cx), iSize/8, SQLITE_TRANSIENT);
+}
+
+/* Compute a string using sqlite3_vsnprintf() with a maximum length
+** of 50 bytes and add it to the hash.
+*/
+static void hash_step_vformat(
+ SHA3Context *p, /* Add content to this context */
+ const char *zFormat,
+ ...
+){
+ va_list ap;
+ int n;
+ char zBuf[50];
+ va_start(ap, zFormat);
+ sqlite3_vsnprintf(sizeof(zBuf),zBuf,zFormat,ap);
+ va_end(ap);
+ n = (int)strlen(zBuf);
+ SHA3Update(p, (unsigned char*)zBuf, n);
+}
+
+/*
+** Implementation of the sha3_query(SQL,SIZE) function.
+**
+** This function compiles and runs the SQL statement(s) given in the
+** argument. The results are hashed using a SIZE-bit SHA3. The default
+** size is 256.
+**
+** The format of the byte stream that is hashed is summarized as follows:
+**
+** S<n>:<sql>
+** R
+** N
+** I<int>
+** F<ieee-float>
+** B<size>:<bytes>
+** T<size>:<text>
+**
+** <sql> is the original SQL text for each statement run and <n> is
+** the size of that text. A single R character occurs before the
+** start of each row. N means a NULL value. I mean an 8-byte
+** little-endian integer <int>. F is a floating point number with
+** an 8-byte little-endian IEEE floating point value <ieee-float>.
+** B means blobs of <size> bytes. T means text rendered as <size>
+** bytes of UTF-8.
+*/
+static void sha3QueryFunc(
+ sqlite3_context *context,
+ int argc,
+ sqlite3_value **argv
+){
+ sqlite3 *db = sqlite3_context_db_handle(context);
+ const char *zSql = (const char*)sqlite3_value_text(argv[0]);
+ sqlite3_stmt *pStmt = 0;
+ int nCol; /* Number of columns in the result set */
+ int i; /* Loop counter */
+ int rc;
+ int n;
+ const char *z;
+ SHA3Context cx;
+ int iSize;
+
+ if( argc==1 ){
+ iSize = 256;
+ }else{
+ iSize = sqlite3_value_int(argv[1]);
+ if( iSize!=224 && iSize!=256 && iSize!=384 && iSize!=512 ){
+ sqlite3_result_error(context, "SHA3 size should be one of: 224 256 "
+ "384 512", -1);
+ return;
+ }
+ }
+ if( zSql==0 ) return;
+ SHA3Init(&cx, iSize);
+ while( zSql[0] ){
+ rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, &zSql);
+ if( rc ){
+ char *zMsg = sqlite3_mprintf("error SQL statement [%s]: %s",
+ zSql, sqlite3_errmsg(db));
+ sqlite3_finalize(pStmt);
+ sqlite3_result_error(context, zMsg, -1);
+ sqlite3_free(zMsg);
+ return;
+ }
+ if( !sqlite3_stmt_readonly(pStmt) ){
+ char *zMsg = sqlite3_mprintf("non-query: [%s]", sqlite3_sql(pStmt));
+ sqlite3_finalize(pStmt);
+ sqlite3_result_error(context, zMsg, -1);
+ sqlite3_free(zMsg);
+ return;
+ }
+ nCol = sqlite3_column_count(pStmt);
+ z = sqlite3_sql(pStmt);
+ n = (int)strlen(z);
+ hash_step_vformat(&cx,"S%d:",n);
+ SHA3Update(&cx,(unsigned char*)z,n);
+
+ /* Compute a hash over the result of the query */
+ while( SQLITE_ROW==sqlite3_step(pStmt) ){
+ SHA3Update(&cx,(const unsigned char*)"R",1);
+ for(i=0; i<nCol; i++){
+ switch( sqlite3_column_type(pStmt,i) ){
+ case SQLITE_NULL: {
+ SHA3Update(&cx, (const unsigned char*)"N",1);
+ break;
+ }
+ case SQLITE_INTEGER: {
+ sqlite3_uint64 u;
+ int j;
+ unsigned char x[9];
+ sqlite3_int64 v = sqlite3_column_int64(pStmt,i);
+ memcpy(&u, &v, 8);
+ for(j=8; j>=1; j--){
+ x[j] = u & 0xff;
+ u >>= 8;
+ }
+ x[0] = 'I';
+ SHA3Update(&cx, x, 9);
+ break;
+ }
+ case SQLITE_FLOAT: {
+ sqlite3_uint64 u;
+ int j;
+ unsigned char x[9];
+ double r = sqlite3_column_double(pStmt,i);
+ memcpy(&u, &r, 8);
+ for(j=8; j>=1; j--){
+ x[j] = u & 0xff;
+ u >>= 8;
+ }
+ x[0] = 'F';
+ SHA3Update(&cx,x,9);
+ break;
+ }
+ case SQLITE_TEXT: {
+ int n2 = sqlite3_column_bytes(pStmt, i);
+ const unsigned char *z2 = sqlite3_column_text(pStmt, i);
+ hash_step_vformat(&cx,"T%d:",n2);
+ SHA3Update(&cx, z2, n2);
+ break;
+ }
+ case SQLITE_BLOB: {
+ int n2 = sqlite3_column_bytes(pStmt, i);
+ const unsigned char *z2 = sqlite3_column_blob(pStmt, i);
+ hash_step_vformat(&cx,"B%d:",n2);
+ SHA3Update(&cx, z2, n2);
+ break;
+ }
+ }
+ }
+ }
+ sqlite3_finalize(pStmt);
+ }
+ sqlite3_result_blob(context, SHA3Final(&cx), iSize/8, SQLITE_TRANSIENT);
+}
+
+
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_shathree_init(
+ sqlite3 *db,
+ char **pzErrMsg,
+ const sqlite3_api_routines *pApi
+){
+ int rc = SQLITE_OK;
+ SQLITE_EXTENSION_INIT2(pApi);
+ (void)pzErrMsg; /* Unused parameter */
+ rc = sqlite3_create_function(db, "sha3", 1, SQLITE_UTF8, 0,
+ sha3Func, 0, 0);
+ if( rc==SQLITE_OK ){
+ rc = sqlite3_create_function(db, "sha3", 2, SQLITE_UTF8, 0,
+ sha3Func, 0, 0);
+ }
+ if( rc==SQLITE_OK ){
+ rc = sqlite3_create_function(db, "sha3_query", 1, SQLITE_UTF8, 0,
+ sha3QueryFunc, 0, 0);
+ }
+ if( rc==SQLITE_OK ){
+ rc = sqlite3_create_function(db, "sha3_query", 2, SQLITE_UTF8, 0,
+ sha3QueryFunc, 0, 0);
+ }
+ return rc;
+}
projects / thirdparty / sqlite.git / commitdiff
