c-multiaddr/protocols.h

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#ifndef PROTOCOLS
#define PROTOCOLS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include "varhexutils.h"
int CNT_PROTOCOLNUM=0;
struct protocol
{
char hexcode[21];
int deccode;
int size;
char name[30];
};
struct protocol *protocol_P; //Pointer for holding multiple structures
int protocol_REMOVE_id(int remid)//Function to remove & shift back all data, sort of like c++ vectors.
{
if(remid < CNT_PROTOCOLNUM && remid >= 0&&CNT_PROTOCOLNUM!=0) //Checking to see if remid actually exists.
{
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for(int i=remid; i<CNT_PROTOCOLNUM-1; ++i) //While i < num of registered protocols //Needs to be tested that -1 is for valgrind debugging
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{
strcpy((protocol_P+i)->hexcode, (protocol_P+i+1)->hexcode); //shift memory to the user we want to remove.
(protocol_P+i)->deccode = (protocol_P+i+1)->deccode; //Same as above
(protocol_P+i)->size = (protocol_P+i+1)->size; //Same as above
strcpy((protocol_P+i)->name, (protocol_P+i+1)->name); //Same as above
}//Overwriting user done. Time to get rid of that extra memory.
protocol_P = (struct protocol*) realloc(protocol_P, (CNT_PROTOCOLNUM-1) * sizeof(struct protocol));
//Memory erased,
CNT_PROTOCOLNUM--; //Since the record no longer exists, we should decrease the ammount of users.
return 1; //Purely for error checking, in case someone ever wants it/
} //1 = Success
else
{
if(CNT_PROTOCOLNUM == 0)
{
perror("ERROR: 0 PROTOCOLS... Did you load protocols?");
}
else
{
perror("ERROR: No such protocol!");
}
return 0;
}
}
void unload_protocols()
{
free(protocol_P);
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CNT_PROTOCOLNUM=0;
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}
void load_protocols()
{
FILE *FPROC_POINT; //File pointer.
FPROC_POINT = fopen("proto-dat", "r");//Opening proto-dat Or protocols.csv, I just formatted it to my liking.
if(FPROC_POINT != NULL) //While pointer is not null.
{
char W_BUFF[20] = "\0";//Char array to parse file.
for(int i=0; fscanf(FPROC_POINT, "%s", W_BUFF) != EOF; i++) // Scanning file and incrementing for processing.
{
switch(i)
{
case 0: //First word - HEXCODE
{
//ADD MEMORY FOR NEW PROTOCOL
if(CNT_PROTOCOLNUM==0) //If there are no registered protocols yet, allocate memory to pointer.
{
protocol_P = (struct protocol*) malloc (sizeof(struct protocol));
}
else //Reallocate memory to fit one more protocol
{
protocol_P = (struct protocol*) realloc(protocol_P, (CNT_PROTOCOLNUM+1) * sizeof(struct protocol));
}
strcpy((protocol_P+CNT_PROTOCOLNUM)->hexcode, W_BUFF); //Copy word to structure at hexcode A hexcode is a string so we keep it as such
break;
}
case 1://Second word - DECCODE
{
(protocol_P+CNT_PROTOCOLNUM)->deccode= atoi(W_BUFF); //Copy word to structure at deccode after converting it to int.
break;
}
case 2://Third word - SIZE
{
(protocol_P+CNT_PROTOCOLNUM)->size= atoi(W_BUFF); //Copy word to structure at size after converting it to int.
break;
}
case 3://Fourth word - NAME
{
strcpy((protocol_P+CNT_PROTOCOLNUM)->name, W_BUFF); //Copy word to structure at name // String
i=-1;
CNT_PROTOCOLNUM++;
break;
}
default:
{
printf("HOUSTON WE HAVE A BIG PROBLEM!!!!\nPROTOCOLS.H-REACHED DEFAULT CASE IN READING FILE!\nREPORT TO SYSTEMS ADMIN!\n");
break;
}
}
}
fclose(FPROC_POINT);
protocol_REMOVE_id(0);
}
else
{
perror("Fatal Error:");
}
}
struct protocol * proto_with_name(char proto_w_name[]) //Search for protocol with inputted name
{
for(int i=0; i<CNT_PROTOCOLNUM; i++)
{
if(strcmp(proto_w_name, (protocol_P+i)->name) == 0)
{
return (protocol_P+i);
}
}
return NULL;
}
struct protocol * proto_with_deccode(int proto_w_deccode) //Search for protocol with inputted deccode
{
for(int i=0; i<CNT_PROTOCOLNUM; i++)
{
if((protocol_P+i)->deccode == proto_w_deccode)
{
return (protocol_P+i);
}
}
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return NULL;
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}
void pp() //Purely for debugging purposes, prints the entire loaded protocols.
{
for(int i=0;i<CNT_PROTOCOLNUM;i++)
{
if(i>=9)
{printf("=========== ~%d~ ===========\n", i+1);}
else
{printf("=========== ~0%d~ ===========\n", i+1);}
printf(">> HEX-CODE: %s\n", (protocol_P+i)->hexcode);
printf(">> DEC-CODE: %d\n", (protocol_P+i)->deccode);
printf(">> SIZE: %d\n", (protocol_P+i)->size);
printf(">> NAME: %s\n", (protocol_P+i)->name);
}
printf("----------------------------\n");
printf("TOTAL PROTOCOLS: %d\n",CNT_PROTOCOLNUM);
}
void protocols_with_string(char * meee,int sizi) // NOT FINISHED, DO NOT USE!
{
int finalsize = 0;
if(!isalnum(meee[sizi-1]) && !isalnum(meee[sizi-1]))
{
//Everything is alright, it's nul terminated!;
finalsize = sizi;
}
else
{
//Well houston we have a problem.
finalsize = sizi+2;
}
char mestring[finalsize];
strcpy(mestring, meee);
if(sizi!=finalsize)
{
strcpy(mestring,"\0");
}
char * words[50] = { NULL };
int atword = 0;
int mem = 0;
for(int i=0; i<sizeof(mestring)-2; i++)
{
if(mestring[i] == '/')
{
printf("NEW WORD!\n");
atword++;
int currentsize = 0;
for(int j = i+1; mestring[j] != '/' && j < sizeof(mestring)-2; j++)
{
currentsize++;
}
char haay[20];
int lesbo = 0;
for(int x = i+1; x<sizeof(mestring)-2; x++)
{
if(mestring[x] == '/')
{
break;
}
haay[lesbo] = mestring[x];
lesbo++;
}
words[atword-1] = (char *) malloc(currentsize+2);
strcpy(words[atword-1], haay);
bzero(haay,20);
}
}
printf("Result:%s\n", words[0]);
for(int mm=0; mm < 50; mm++)
{
if(words[mm])
{
free(words[mm]);
}
}
}
#endif