main.c

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include <linux/limits.h> 

int main(int argc, char *argv[]) 
{
    printf("begin");

    // Error on no args.
    if(argc <= 1)
    {
        printf("Error, no arguments provided.");     
        return 1;
    }

    // Seed rand.
    srand(time(NULL));

    int outputArg = *argv[2];
    int letterArg = *argv[2];
    const char alphabet[] = "abcdefghijklmnopqrstuvwxyz";
    int charFrequency[26] = { 0 };
    int sum = 0;
    char outputLineBuffer[256];
    const char failStr[] = "failed: Name or service not known.";
    char inputFile[PATH_MAX];

    strcat(strcpy(inputFile, getenv("HOME")), "/.config/unreg-web-domain-gen/input");

    // Set char frequencies. 
    for(int i = 0; i < 26; i++)
    {
        FILE *fp;
        char ch;

        fp = fopen(inputFile, "r");

        if (fp == NULL)
        {
            printf("File is not available.\n");
            exit(1);
        }
    
        while((ch = fgetc(fp)) != EOF)
        {
            if(ch == alphabet[i])
            {
                charFrequency[i]++;
            }
        }

        fclose(fp);
    }

    // Sum frequencies.
    for(int i = 0; i < 26; i++)
    {
        sum += charFrequency[i];
    }

    // For each output.
    // Per address.
    while(outputArg > 0)
    {
        outputArg--;

        FILE *fp;
        char command[PATH_MAX] = "/bin/wget ";
        // char *address[PATH_MAX] = { '\0' };
        char* address;
        address = malloc(letterArg + 5);
        
        // For each letter.
        // Generate random letters.
        for(int i = 0; i < letterArg; i++)
        {
            // Get a random value.
            int random = rand() % sum + 1;

            int index = 0;
            int sumProgression = 0;
            
            // Deduce an index of `charFrequency` for a letter random of the alphabet.
            while(random > sumProgression)
            {
                sumProgression += charFrequency[index];
                index++;
            }

            // const char* name = "hello";
            // const char* extension = ".txt";

            // char* name_with_extension;
            // name_with_extension = malloc(strlen(name)+1+4); /* make space for the new string (should check the return value ...) */
            // strcpy(name_with_extension, name); /* copy name into the new var */
            // strcat(name_with_extension, extension); /* add the extension */

            // Concatente to `command` C string.
            strcat(address, alphabet[index]);
        }

        // // Concatenate `.com` to comlete the command. 
        // strcat(address, ".com");
        // strcat(command, address);

        // // Enable reaading the output of the command.
        // fp = popen(command,"r"); 

        // if(fp == NULL) 
        // {
        //     printf("Failed to run command\n" );
        //     exit(1);
        // }

        // while(fgets(outputLineBuffer, sizeof(outputLineBuffer), fp)) 
        // {
        //     if(strstr(outputLineBuffer, failStr) != NULL) 
        //     {
        //         printf(address);
        //     }
        // }

        // fclose(fp);
    }

    return 0;
}