68ca649688
Made an include directory to avoid naming conflicts with other projects. Also added a Makefile to help with building the library and testing application. Note: This does not build due to what appears to be a missing codec.h file.
736 lines
15 KiB
C
736 lines
15 KiB
C
#ifndef PROTOUTILS
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#define PROTOUTILS
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <inttypes.h>
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#include <ctype.h>
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#include "base58.h"
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#include "varhexutils.h"
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#include "protocols.h"
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//////////////////////////////////////////////////////////
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char ASCII2bits(char ch) {
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if (ch >= '0' && ch <= '9') {
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return (ch - '0');
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} else if (ch >= 'a' && ch <= 'z') {
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return (ch - 'a') + 10;
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} else if (ch >= 'A' && ch <= 'Z') {
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return (ch - 'A') + 10;
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}
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return 0; // fail
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}
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void hex2bin (char *dst, char *src, int len)
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{
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while (len--) {
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*dst = ASCII2bits(*src++) << 4; // higher bits
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*dst++ |= ASCII2bits(*src++); // lower bits
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}
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}
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char bits2ASCII(char b) {
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if (b >= 0 && b < 10) {
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return (b + '0');
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} else if (b >= 10 && b <= 15) {
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return (b - 10 + 'a');
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}
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return 0; // fail
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}
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void bin2hex (char *dst, char *src, int len)
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{
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while (len--) {
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*dst++ = bits2ASCII((*src >> 4) & 0xf); // higher bits
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*dst++ = bits2ASCII(*src++ & 0xf); // lower bits
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}
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*dst = '\0';
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}
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//////////////////////////////////////////////////////////
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//IPv4 VALIDATOR
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#define DELIM "."
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/* return 1 if string contain only digits, else return 0 */
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int valid_digit(char *ip_str)
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{
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int err = 0;
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while (*ip_str) {
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if (*ip_str >= '0' && *ip_str <= '9')
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++ip_str;
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else
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return 0;
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}
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return 1;
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}
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/* return 1 if IP string is valid, else return 0 */
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int is_valid_ipv4(char *ip_str)
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{
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int i, num, dots = 0;
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char *ptr;
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int err=0;
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if (ip_str == NULL)
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err = 1;
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// See following link for strtok()
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// http://pubs.opengroup.org/onlinepubs/009695399/functions/strtok_r.html
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ptr = strtok(ip_str, DELIM);
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if (ptr == NULL)
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err = 1;
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while (ptr)
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{
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/* after parsing string, it must contain only digits */
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if (!valid_digit(ptr))
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err = 1;
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num = atoi(ptr);
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/* check for valid IP */
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if (num >= 0 && num <= 255) {
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/* parse remaining string */
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ptr = strtok(NULL, DELIM);
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if (ptr != NULL)
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++dots;
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} else
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err = 1;
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}
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/* valid IP string must contain 3 dots */
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if (dots != 3)
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{
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err = 1;
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}
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if(err == 0)
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{
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return 1;
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}
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else
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{
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return 0;
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}
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}
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//////////////IPv6 Validator
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#define MAX_HEX_NUMBER_COUNT 8
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int ishexdigit(char ch)
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{
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if((ch>='0'&&ch<='9')||(ch>='a'&&ch<='f')||(ch>='A'&&ch<='F'))
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return(1);
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return(0);
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}
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int is_valid_ipv6(char *str)
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{
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int hdcount=0;
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int hncount=0;
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int err=0;
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int packed=0;
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if(*str==':')
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{
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str++;
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if(*str!=':')
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return(0);
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else
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{
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packed=1;
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hncount=1;
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str++;
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if(*str==0)
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return(1);
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}
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}
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if(ishexdigit(*str)==0)
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{
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return(0);
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}
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hdcount=1;
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hncount=1;
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str++;
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while(err==0&&*str!=0)
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{
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if(*str==':')
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{
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str++;
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if(*str==':')
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{
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if(packed==1)
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err=1;
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else
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{
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str++;
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if(ishexdigit(*str)||*str==0&&hncount<MAX_HEX_NUMBER_COUNT)
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{
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packed=1;
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hncount++;
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if(ishexdigit(*str))
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{
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if(hncount==MAX_HEX_NUMBER_COUNT)
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{
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err=1;
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} else
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{
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hdcount=1;
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hncount++;
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str++;
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}
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}
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} else
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{
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err=1;
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}
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}
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}
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else
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{
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if(!ishexdigit(*str))
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{
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err=1;
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} else
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{
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if(hncount==MAX_HEX_NUMBER_COUNT)
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{
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err=1;
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} else
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{
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hdcount=1;
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hncount++;
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str++;
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}
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}
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}
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}
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else
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{
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if(ishexdigit(*str))
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{
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if(hdcount==4)
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err=1;
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else
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{
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hdcount++;
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str++;
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}
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} else
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err=1;
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}
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}
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if(hncount<MAX_HEX_NUMBER_COUNT&&packed==0)
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err=1;
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return(err==0);
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}
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uint64_t ip2int(char * ipconvertint)
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{
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uint64_t final_result =0;
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char * iproc;
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int ipat1=0;
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int ipat2=0;
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int ipat3=0;
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int ipat4=0;
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char ip[16];
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strcpy(ip, ipconvertint);
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iproc = strtok (ip,".");
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for(int i=0; i<4;i++)
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{
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switch(i)
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{
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case 0:
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{
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ipat1 = atoi(iproc);
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break;
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}
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case 1:
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{
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ipat2 = atoi(iproc);
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break;
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}
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case 2:
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{
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ipat3 = atoi(iproc);
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break;
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}
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case 3:
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{
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ipat4 = atoi(iproc);
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break;
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}
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default:
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{
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printf("Somebody misplaced an int\n");
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break;
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}
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}
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iproc = strtok (NULL,".");
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}
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final_result = ((ipat1*pow(2,24))+(ipat2*pow(2,16))+(ipat3*pow(2,8))+ipat4*1);
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return final_result;
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}
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char * int2ip(int inputintip)
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{
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uint32_t ipint = inputintip;
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static char xxx_int2ip_result[16] = "\0";
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bzero(xxx_int2ip_result,16);
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uint32_t ipint0 = (ipint >> 8*3) % 256;
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uint32_t ipint1 = (ipint >> 8*2) % 256;
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uint32_t ipint2 = (ipint >> 8*1) % 256;
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uint32_t ipint3 = (ipint >> 8*0) % 256;
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sprintf(xxx_int2ip_result, "%d.%d.%d.%d", ipint0,ipint1,ipint2,ipint3);
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return xxx_int2ip_result;
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}
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//I didn't feel another address_bytes_to_string was necesarry sry guys
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int bytes_to_string(char * resultzx, uint8_t * catx,int xbsize)
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{
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bzero(resultzx,800);
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uint8_t * bytes = NULL;
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int size = 0;
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size = xbsize;
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load_protocols();
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char hex[xbsize*2];
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bzero(hex,xbsize*2);
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strcat(hex,Var_To_Hex(size, catx));
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//Positioning for memory jump:
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int lastpos = 0;
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char pid[3];
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//Process Hex String
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NAX:
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//Stage 1 ID:
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if(lastpos!=0)
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{
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lastpos+1;
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}
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pid[0] = hex[lastpos];
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pid[1] = hex[lastpos+1];
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pid[2] = '\0';
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if(lastpos == 0)
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{
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load_protocols();
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}
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if(proto_with_deccode(Hex_To_Int(pid)))
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{
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//////////Stage 2: Address
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struct protocol * PID;
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PID = NULL;
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PID = proto_with_deccode(Hex_To_Int(pid));
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if(strcmp(PID->name,"ipfs")!=0)
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{
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lastpos = lastpos+2;
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char address[(PID->size/4)+1];
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bzero(address,(PID->size/4)+1);
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address[(PID->size/4)]='\0';
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int x=0;
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//printf("\nHEX TO DECODE: %s\n",hex);
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for(int i = lastpos;i<(PID->size/4)+lastpos;i++)
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{
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address[x] = hex[i];
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//printf("HEX[%d]=%c\n",i,hex[i]);
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x++;
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}
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//////////Stage 3 Process it back to string
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//printf("Protocol: %s\n", PID->name);
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//printf("Address : %s\n", address);
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lastpos= lastpos+(PID->size/4);
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//printf("lastpos: %d",lastpos);
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//////////Address:
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//Keeping Valgrind happy
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char name[30];
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bzero(name,30);
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strcpy(name, PID->name);
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//
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strcat(resultzx, "/");
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strcat(resultzx, name);
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strcat(resultzx, "/");
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if(strcmp(name, "ip4")==0)
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{
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strcat(resultzx,int2ip(Hex_To_Int(address)));
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}
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else if(strcmp(name, "tcp")==0)
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{
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char a[5];
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sprintf(a,"%lu",Hex_To_Int(address));
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strcat(resultzx,a);
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}
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else if(strcmp(name, "udp")==0)
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{
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char a[5];
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sprintf(a,"%lu",Hex_To_Int(address));
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strcat(resultzx,a);
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}
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//printf("Address(hex):%s\n",address);
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//printf("TESTING: %s\n",resultzx);
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/////////////Done processing this, move to next if there is more.
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if(lastpos<size*2)
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{
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goto NAX;
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}
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}
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else//IPFS CASE
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{
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lastpos = lastpos + 4;
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//FETCHING SIZE OF ADDRESS
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char prefixedvarint[3];
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bzero(prefixedvarint,3);
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int pvi;
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pvi=0;
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for(int i=lastpos-2;i<lastpos;i++)
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{
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prefixedvarint[pvi] = hex[i];
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pvi++;
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}
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int addrsize;
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addrsize = HexVar_To_Num_32(prefixedvarint);
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unsigned char IPFS_ADDR[addrsize+1];
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bzero(IPFS_ADDR,addrsize+1);
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int IPFS_PARSE;
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IPFS_PARSE = 0;
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for(int i = lastpos;i<lastpos+addrsize;i++)
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{
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IPFS_ADDR[IPFS_PARSE] = hex[i];
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//printf("\nIPFS_ADDR[%d] = %c\n\n",IPFS_PARSE,hex[i]);
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IPFS_PARSE++;
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}
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unsigned char addrbuf[strlen(IPFS_ADDR)/2];
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bzero(addrbuf,strlen(IPFS_ADDR)/2);
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memcpy(addrbuf,Hex_To_Var(IPFS_ADDR),sizeof(addrbuf));
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size_t rezbuflen = strlen(IPFS_ADDR);
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unsigned char rezultat[rezbuflen];
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bzero(rezultat,rezbuflen);
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unsigned char * pointyaddr = NULL;
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pointyaddr = rezultat;
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int returnstatus = 0;
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returnstatus = libp2p_crypto_encoding_base58_encode(addrbuf, sizeof(addrbuf), &pointyaddr, &rezbuflen);
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if(returnstatus == 0)
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{
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printf("\nERROR!!!!!\n");
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return 0;
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}
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strcat(resultzx, "/");
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strcat(resultzx, PID->name);
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strcat(resultzx, "/");
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strcat(resultzx, rezultat);
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}
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}
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strcat(resultzx, "/");
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unload_protocols();
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}
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//
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char * address_string_to_bytes(struct protocol * xx, char * abc,size_t getsznow)
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{
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static char astb__stringy[800] = "\0";
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bzero(astb__stringy,800);
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int code = 0;
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code = xx->deccode;
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switch(code)
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{
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case 4://IPv4
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{
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char testip[16] = "\0";
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bzero(testip,16);
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strcpy(testip,abc);
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if(is_valid_ipv4(testip)==1)
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{
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uint64_t iip = ip2int(abc);
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strcpy(astb__stringy,Int_To_Hex(iip));
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xx = NULL;
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return astb__stringy;
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}
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else
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{
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return "ERR";
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}
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break;
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}
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case 41://IPv6 Must be done
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{
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return "ERR";
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break;
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}
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case 6: //Tcp
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{
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if(atoi(abc)<65536&&atoi(abc)>0)
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{
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static char himm_woot[5] = "\0";
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bzero(himm_woot, 5);
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strcpy(himm_woot, Int_To_Hex(atoi(abc)));
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if(himm_woot[2] == '\0')
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{//manual switch
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char swap0='0';
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char swap1='0';
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char swap2=himm_woot[0];
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char swap3=himm_woot[1];
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himm_woot[0] = swap0;
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himm_woot[1] = swap1;
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himm_woot[2] = swap2;
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himm_woot[3] = swap3;
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}
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else if(himm_woot[3] == '\0')
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{
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char swap0='0';
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char swap1=himm_woot[0];
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char swap2=himm_woot[1];
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char swap3=himm_woot[2];
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himm_woot[0] = swap0;
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himm_woot[1] = swap1;
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himm_woot[2] = swap2;
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himm_woot[3] = swap3;
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}
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himm_woot[4]='\0';
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return himm_woot;
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}
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else
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{
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return "ERR";
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}
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break;
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}
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case 17: //Udp
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{
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if(atoi(abc)<65536&&atoi(abc)>0)
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{
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static char himm_woot2[5] = "\0";
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bzero(himm_woot2, 5);
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strcpy(himm_woot2, Int_To_Hex(atoi(abc)));
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if(himm_woot2[2] == '\0')
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{//Manual Switch2be
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char swap0='0';
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char swap1='0';
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char swap2=himm_woot2[0];
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char swap3=himm_woot2[1];
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himm_woot2[0] = swap0;
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himm_woot2[1] = swap1;
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himm_woot2[2] = swap2;
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himm_woot2[3] = swap3;
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}
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else if(himm_woot2[3] == '\0')
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{//Manual switch
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char swap0='0';
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char swap1=himm_woot2[0];
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char swap2=himm_woot2[1];
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char swap3=himm_woot2[2];
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himm_woot2[0] = swap0;
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himm_woot2[1] = swap1;
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himm_woot2[2] = swap2;
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himm_woot2[3] = swap3;
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}
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himm_woot2[4]='\0';
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return himm_woot2;
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}
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else
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{
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return "ERR";
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}
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break;
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}
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case 33://dccp
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{
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return "ERR";
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break;
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}
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case 132://sctp
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{
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return "ERR";
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break;
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}
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case 301://udt
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{
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return "ERR";
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break;
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}
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case 302://utp
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{
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return "ERR";
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break;
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}
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case 42://IPFS - !!!
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{
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char * x_data = NULL;
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x_data = abc;
|
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size_t x_data_length = strlen(x_data);
|
|
size_t result_buffer_length = libp2p_crypto_encoding_base58_decode_max_size(x_data);
|
|
unsigned char result_buffer[result_buffer_length];
|
|
unsigned char* ptr_to_result = result_buffer;
|
|
memset(result_buffer, 0, result_buffer_length);
|
|
// now get the decoded address
|
|
int return_value = libp2p_crypto_encoding_base58_decode(x_data, x_data_length, &ptr_to_result, &result_buffer_length);
|
|
if (return_value == 0)
|
|
{
|
|
return "ERR";
|
|
}
|
|
// throw everything in a hex string so we can debug the results
|
|
static char returning_result[300];
|
|
bzero(returning_result,300);
|
|
char ADDR_ENCODED[300];
|
|
bzero(ADDR_ENCODED,300);
|
|
int ilen = 0;
|
|
bzero(returning_result,300);
|
|
for(int i = 0; i < result_buffer_length; i++)
|
|
{
|
|
// get the char so we can see it in the debugger
|
|
unsigned char c = ptr_to_result[i];
|
|
char miu[3];
|
|
bzero(miu, 3);
|
|
miu[3] = '\0';
|
|
sprintf(miu,"%02x", c);
|
|
|
|
strcat(ADDR_ENCODED, miu);
|
|
}
|
|
ilen = strlen(ADDR_ENCODED);
|
|
char prefixed[3];
|
|
strcpy(prefixed,Num_To_HexVar_32(ilen));
|
|
prefixed[3] = '\0';
|
|
strcat(returning_result, prefixed);
|
|
strcat(returning_result, ADDR_ENCODED);
|
|
//printf("ADDRESS: %s\nSIZEADDR: %d\n",ADDR_ENCODED,ilen);
|
|
//printf("NOW DECODED VARINT: %d", HexVar_To_Num_32(prefixed));
|
|
return returning_result;
|
|
break;
|
|
}
|
|
case 480://http
|
|
{
|
|
return "ERR";
|
|
break;
|
|
}
|
|
case 443://https
|
|
{
|
|
return "ERR";
|
|
break;
|
|
}
|
|
case 477://ws
|
|
{
|
|
return "ERR";
|
|
break;
|
|
}
|
|
case 444://onion
|
|
{
|
|
return "ERR";
|
|
break;
|
|
}
|
|
case 275://libp2p-webrtc-star
|
|
{
|
|
return "ERR";
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
printf("NO SUCH PROTOCOL!\n");
|
|
return "ERR";
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
int string_to_bytes(uint8_t * finalbytes,int * realbbsize,char * strx, size_t strsize)
|
|
{
|
|
if(strx[0] != '/')
|
|
{
|
|
printf("Error, must start with '/'\n");
|
|
return 0;
|
|
}
|
|
char xxx[800];
|
|
bzero(xxx,800);
|
|
//Getting total words
|
|
int totalwords = 0;
|
|
char * totp;
|
|
char totalwordstest[strsize];
|
|
bzero(totalwordstest,strsize);
|
|
strcat(totalwordstest, strx);
|
|
totp = strtok(totalwordstest, "/");
|
|
while(totp != NULL)
|
|
{
|
|
totp = strtok (NULL, "/");
|
|
totalwords++;
|
|
}
|
|
//Initializing variables to store our processed HEX in:
|
|
int malf=0; //In case something goes wrong this will be 1.
|
|
char processed[800];//HEX CONTAINER
|
|
bzero(processed,800);
|
|
//Now Setting up variables for calculating which is the first
|
|
//and second word:
|
|
int firstorsecond = 1; //1=Protocol && 2 = Address
|
|
char pstring[800];//We do not want to harm the initial string.
|
|
bzero(pstring,800);
|
|
strcat(pstring,strx);
|
|
//Starting to extract words and process them:
|
|
char * wp;
|
|
char * end;
|
|
wp=strtok_r(pstring,"/",&end);
|
|
load_protocols();
|
|
struct protocol * protx;
|
|
while(wp)
|
|
{
|
|
if(firstorsecond==1)//This is the Protocol
|
|
{
|
|
if(proto_with_name(wp))
|
|
{
|
|
protx=proto_with_name(wp);
|
|
//printf("PROTOCOL: %s\n",protx->name);
|
|
strcat(processed, Int_To_Hex(protx->deccode));
|
|
firstorsecond=2;//Since the next word will be an address
|
|
}
|
|
else
|
|
{
|
|
printf("\nNo such protocol!\n\n");
|
|
malf=1;
|
|
break;
|
|
}
|
|
}
|
|
else//This is the address
|
|
{
|
|
//printf("ADDRESS: %s\n",wp);
|
|
if(address_string_to_bytes(protx, wp,strlen(wp)) == "ERR")
|
|
{
|
|
malf = 1;
|
|
//printf("\n\nTRIGGERED!!!!!!!!!!!!!!!!!!!!!!!\n\n");
|
|
}
|
|
else
|
|
{
|
|
strcat(processed,address_string_to_bytes(protx, wp,strlen(wp)));
|
|
//printf("Addressinbytes: %s\n",address_string_to_bytes(protx, wp,strlen(wp)));
|
|
}
|
|
protx=NULL;//Since right now it doesn't need that assignment anymore.
|
|
firstorsecond=1;//Since the next word will be an protocol
|
|
}
|
|
wp=strtok_r(NULL,"/",&end);
|
|
}
|
|
protx=NULL;
|
|
unload_protocols();
|
|
//printf("Processed contains: %s \n",processed);
|
|
|
|
if(malf==1)
|
|
{
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
bzero(finalbytes,400);
|
|
//printf("XXX: %s\n",xxx);
|
|
memcpy(finalbytes, Hex_To_Var(processed), 400);
|
|
realbbsize[0] = 0;
|
|
for(int i=0;i<400;i++)
|
|
{
|
|
if(finalbytes[i])
|
|
{
|
|
realbbsize[0]++;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
}
|
|
#endif
|