c-multiaddr/varhexutils.c
2017-07-17 16:13:53 -05:00

260 lines
6.4 KiB
C

#ifndef VARHEXUTILS
#define VARHEXUTILS
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <stdio.h>
#include <inttypes.h>
#include "multiaddr/varint.h"
#include "multiaddr/varhexutils.h"
/*uint8_t * encode_big_endian_32(uint32_t ebex32)
{
uint8_t encbe[10] = {0};
memcpy(encbe, htobe32(ebex32));
return encbe;
}*/
int8_t Var_Bytes_Count(uint8_t * countbytesofthis)
{
static int8_t xrzk_bytescnt = 0;
for(int8_t i=0; i<10; i++)
{
if(countbytesofthis[i] != 0)
{
xrzk_bytescnt++;
}
}
return xrzk_bytescnt;
}
uint8_t * Num_To_Varint_64(uint64_t TOV64INPUT) //UINT64_T TO VARINT
{
static uint8_t buffy_001[60] = {0};
uvarint_encode64(TOV64INPUT, buffy_001, 60);
return buffy_001;
}
uint8_t * Num_To_Varint_32(uint32_t TOV32INPUT) // UINT32_T TO VARINT
{
static uint8_t buffy_032[60] = {0};
uvarint_encode32(TOV32INPUT, buffy_032, 60);
return buffy_032;
}
uint64_t * Varint_To_Num_64(uint8_t TON64INPUT[60]) //VARINT TO UINT64_t
{
static uint64_t varintdecode_001 = 0;
uvarint_decode64(TON64INPUT, 60, &varintdecode_001);
return &varintdecode_001;
}
uint32_t * Varint_To_Num_32(uint8_t TON32INPUT[60]) //VARINT TO UINT32_t
{
static uint32_t varintdecode_032 = 0;
uvarint_decode32(TON32INPUT, 60, &varintdecode_032);
return &varintdecode_032;
}
/**
* Converts a 64 bit integer into a hex string
* @param int2hex the 64 bit integer
* @returns a hex representation as a string (leading zero if necessary)
*/
char * Int_To_Hex(uint64_t int2hex) //VAR[binformat] TO HEX
{
static char result[50];
memset(result, 0, 50);
sprintf(result, "%02lX", int2hex);
int slen = strlen(result);
if (slen % 2 != 0) {
for(int i = slen; i >= 0; --i) {
result[i+1] = result[i];
}
result[0] = '0';
}
return result;
}
uint64_t Hex_To_Int(char * hax)
{
char * hex = NULL;
hex=hax;
uint64_t val = 0;
while (*hex)
{
// get current character then increment
uint8_t byte = *hex++;
// transform hex character to the 4bit equivalent number, using the ascii table indexes
if (byte >= '0' && byte <= '9') byte = byte - '0';
else if (byte >= 'a' && byte <='f') byte = byte - 'a' + 10;
else if (byte >= 'A' && byte <='F') byte = byte - 'A' + 10;
// shift 4 to make space for new digit, and add the 4 bits of the new digit
val = (val << 4) | (byte & 0xF);
}
return val;
}
/**
* Convert a byte array into a hex byte array
* @param in the incoming byte array
* @param in_size the size of in
* @param out the resultant array of hex bytes
*/
void vthconvert(const unsigned char* in, int in_size, unsigned char** out)
{
*out = (unsigned char*)malloc( (in_size * 2) + 1);
memset(*out, 0, (in_size * 2) + 1);
unsigned char *ptr = *out;
for (int i = 0; i < in_size; i++) {
sprintf((char*)&ptr[i * 2], "%02x", in[i]);
}
}
/**
* Convert binary array to array of hex values
* @param incoming the binary array
* @param incoming_size the size of the incoming array
* @returns the allocated array
*/
unsigned char * Var_To_Hex(const unsigned char *incoming, int incoming_size)
{
if(incoming != NULL)
{
unsigned char* retVal = NULL;
// this does the real work
vthconvert(incoming, incoming_size, &retVal);
// we can't return an array that will be deallocated!
return retVal;
}
return NULL;
}
/**
* Turn a hex string into a byte array
* @param incoming a string of hex values
* @param num_bytes the size of the result
* @returns a pointer to the converted value
*/
unsigned char* Hex_To_Var(const char* incoming, size_t* num_bytes) //HEX TO VAR[BINFORMAT]
{
// the return value
unsigned char* retVal = NULL;
int incoming_size = strlen(incoming);
*num_bytes = incoming_size / 2;
retVal = (unsigned char*)malloc(*num_bytes);
char code[3];
code[2]='\0';
int pos = 0;
for(int i=0; i < incoming_size; i += 2)
{
code[0] = incoming[i];
code[1] = incoming[i+1];
uint64_t lu = strtol(code, NULL, 16);
retVal[pos] = (unsigned int)lu;
pos++;
}
return retVal;
}
//
void convert(char * convert_result, uint8_t * buf) //Both of them read them properly.
{
char conv_proc[800]="\0";
bzero(conv_proc,800);
int i;
for(i=0; i < 10; i++)
{
sprintf (conv_proc, "%02X", buf[i]);
//printf("%d:%d\n",i, buf[i]);
strcat(convert_result, conv_proc);
}
}
char * Num_To_HexVar_64(uint64_t TOHVINPUT) //UINT64 TO HEXIFIED VAR
{ //Code to varint - py
static char convert_result[800]="\0";//Note that the hex resulted from this will differ from py
bzero(convert_result,800);
memset(convert_result,0,sizeof(convert_result));//But if you make sure the string is always 20 chars in size
uint8_t buf[400] = {0};
bzero(buf,400);
uvarint_encode64(TOHVINPUT, buf, 800);
convert(convert_result,buf);
return convert_result;
}
void convert2(char * convert_result2, uint8_t * bufhx)
{
uint8_t * buf = NULL;
buf = bufhx;
char conv_proc[4]="\0";
conv_proc[3] = '\0';
bzero(conv_proc, 3);
int i;
for(i=0; i == 0; i++)
{
sprintf (conv_proc, "%02X", buf[i]);
//printf("aaaaaaaaaaah%d:%d\n",i, buf[i]);
strcat(convert_result2, conv_proc);
}
buf = NULL;
}
char * Num_To_HexVar_32(uint32_t TOHVINPUT) //UINT32 TO HEXIFIED VAR
{ //Code to varint - py
static char convert_result2[3]="\0";
bzero(convert_result2,3);
convert_result2[2] = '\0';
memset(convert_result2,0,sizeof(convert_result2));
uint8_t buf[1] = {0};
bzero(buf,1);
uvarint_encode32(TOHVINPUT, buf, 1);
convert2(convert_result2,buf);
return convert_result2;
}
uint64_t HexVar_To_Num_64(char * theHEXstring) //HEXIFIED VAR TO UINT64_T
{ //Varint to code - py
uint8_t buffy[400] = {0};
char codo[800] = "\0";
bzero(codo,800);
strcpy(codo, theHEXstring);
char code[3] = "\0";
int x = 0;
for(int i= 0;i<399;i++)
{
strncpy(&code[0],&codo[i],1);
strncpy(&code[1],&codo[i+1],1);
char *ck = NULL;
uint64_t lu = 0;
lu=strtoul(code, &ck, 16);
buffy[x] = lu;
i++;
x++;
}
static uint64_t decoded;
uvarint_decode64 (buffy, 400, &decoded);
return decoded;
}
uint32_t HexVar_To_Num_32(char theHEXstring[]) //HEXIFIED VAR TO UINT32_T
{ //Varint to code py
uint8_t buffy[400] = {0};
bzero(buffy,400);
char codo[800] = "\0";
bzero(codo,800);
strcpy(codo, theHEXstring);
char code[4] = "\0";
bzero(code,3);
code[3] = '\0';
int x = 0;
for(int i= 0;i<399;i++)
{
strncpy(&code[0],&codo[i],1);
strncpy(&code[1],&codo[i+1],1);
char *ck = NULL;
uint32_t lu = {0};
lu=strtoul(code, &ck, 16);
buffy[x] = lu;
i++;
x++;
}
static uint32_t decoded;
uvarint_decode32 (buffy, 10, &decoded);
return decoded;
}
#endif