info.c

#include <stdio.h>
#include <stdlib.h> 
#include <string.h>

char* StrHandler(char *ini, int* maxlen, char end)
{
	int real_len = 0;
	int DEBUG = 0;	

	if(!ini ||!maxlen) return NULL;
	if(*maxlen < 1) return NULL;
	
	real_len = *maxlen;
	
	if(DEBUG) printf("Ini: |%c| \n", ini[0]);
	if(DEBUG) printf("maxlen:|%d| \n", real_len);

	while(real_len > -1 && ini[real_len] != end) real_len--;
	if(DEBUG) printf("Debug - Last char:|%c|\n", ini[real_len+1]);
	while(real_len > -1 && ini[real_len] == end) real_len--;

	real_len++;
	
	if(DEBUG) printf("real len:|%d| \n", real_len);	
	
	char *str;
	str = (char *)calloc (real_len + 1, sizeof(char));

	if(!str) return NULL;
	strncpy(str, ini, real_len);
	
	*maxlen = real_len;

	return str;
}

char* getPackageManager()
{
	int DEBUG = 0;
	FILE *fp;
  	char line[130]="";
	
	fp = fopen("/etc/os-release", "r");

	for(int i = 0; i < 7; i++) fgets( line, sizeof line, fp);

	fclose(fp);

	if (DEBUG) printf("line: %s", line);
	
	int ID_LIKE_Start = 8;
	char* ID_LIKE = (char *)calloc (10 + 1, sizeof(char));
	
	int i = 0;
	
	while( line[ID_LIKE_Start + i] != '\0')
	{
		ID_LIKE[i] = line[ID_LIKE_Start + i];
		i++;
	}
	
	ID_LIKE[--i] = '\0';	
	
	printf("\nID_LIKE:|%s| \n\n", ID_LIKE);
	
	char* manager;
	
/*	if (strcmp("debian\0", ID_LIKE) == 0 )
	{
		manager = calloc(strlen("debian\0"), sizeof(char));
		if(DEBUG == 1) printf("apt \n");
	}
	else if (strcmp("arch\0", ID_LIKE) == 0 ) if(DEBUG == 1) printf("pacman -S");

*/

	return manager;
}


char* getIP()
{
	int DEBUG = 0;
	int IPv4len = 15;

	FILE *fp;
  	char line[130]="";


	fp = popen("ifconfig", "r"); //ip configuration	

  	for(int i = 0; i < 2; i++) fgets( line, sizeof line, fp);

	
	if (DEBUG) printf("line: %s", line);
	
	int inetStart = 13;

	char *inet = StrHandler(line + inetStart, &IPv4len, ' ');
	printf("\nYour IP address:|%s| \n\n", inet);

	char *aux = StrHandler(inet, &IPv4len, '.');
	if (DEBUG) printf("aux: %s \n", aux);

	char ports[] = ".0/24";

	char* range = (char *)calloc(IPv4len + strlen(ports) + 1, sizeof(char) );

	sprintf(range, "%s%s", aux, ports);
	if (DEBUG) printf("Range: %s \n",range);
	

	free(inet);
	free(aux);
	
	pclose(fp);

	return range;
}