utils.c

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// SPDX-FileCopyrightText: 2013 th0rpe <josediazfer@yahoo.es>
// SPDX-License-Identifier: LGPL-3.0-only
 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "utils.h"
 
static char hex_str[] = "01234567890abcdef";
 
// TODO: Add in a Coverity modelling file
char *strcat_dup(char *s1, char *s2, st32 n_free) {
    char *res;
    ut32 len_s1 = s1 ? strlen(s1) : 0;
    ut32 len_s2 = s2 ? strlen(s2) : 0;
 
    if (!(res = (char *)malloc(len_s1 + len_s2 + 1))) {
        return NULL;
    }
    if (len_s1 > 0) {
        memcpy(res, s1, len_s1);
    }
    if (len_s2 > 0) {
        memcpy(res + len_s1, s2, len_s2);
    }
    res[len_s1 + len_s2] = '\0';
    if (n_free == 1) {
        RZ_FREE(s1);
    } else if (n_free == 2) {
        RZ_FREE(s2);
    } else if (n_free == 3) {
        RZ_FREE(s1);
        RZ_FREE(s2);
    }
    return res;
}
 
char *get_hex_str(ut32 hex_num) {
    char aux[3];
 
    aux[2] = '\0';
    aux[1] = hex_str[hex_num & 0xF];
    aux[0] = hex_str[(hex_num >> 4) & 0xF];
 
    return strdup(aux);
}