Apprendre Linux

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AccueilTutorielsC++Linux

Apprendre Linux

Bienvenue dans ce tutoriel consacré à l'apprentissage des technologies liées au développement d'applications en C++.
Produit par Gérard KESSE.

Introduction

### Travailler sous Linux

Vérifier si l'utilisateur est root sous Linux

### Suite

Introduction

C++ est un langage de programmation orientée objet. Il offre la possibilité d'avoir le contrôle total sur la gestion de la mémoire.

### Travailler sous Linux

Linux est un système d'exploitation utilisé en général pour gérer les serveurs applicatifs. A chaque distribution Linux, correspond un gestionnaire de packages dédié qui automatise le processus d'installation et de mises à jour des packages.

Vérifier si l'utilisateur est root sous Linux

Un utilisateur root est un super utilisateur ou un super administrateur. Il possède tous les privilèges sur la machine. Il a le droit de modifier ou de supprimer n'importe quel fichier. Cela peut être dangereux pour la sécurité du système. Pour éviter cette situation, il faut empêcher de démarrer l'application en mode root ou sudo.

// main.cpp (Programme principal)

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#include "cRoot.h"
#include <iostream>
int main(int argc, char **argv)
{
    cRoot oRoot;
    if (oRoot.isRoot())
    {
        std::cerr << "ATTENTION :\n"
                  << "tentative d'exécution de l'application avec les permissions root !\n"
                  << "Ceci n'est pas autorisé car cela peut modifier les permissions du \n"
                  << "répertoire personnel et exposer votre système à des vulnérabilités.\n";
        return EXIT_FAILURE;
    }
    std::cout << "Démarrage de l'application." << std::endl;
    return EXIT_SUCCESS;
}
...
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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// cRoot.h (Vérification de l'utilisateur root)

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#pragma once
class cRoot
{
public:
    cRoot();
    ~cRoot();
    bool isRoot() const;
};
...
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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// cRoot.cpp (Vérification de l'utilisateur root)

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#include "cRoot.h"
#include <unistd.h>
#include <sys/types.h>
cRoot::cRoot()
{
}
cRoot::~cRoot()
{
}
bool cRoot::isRoot() const
{
    return (geteuid() == 0);
}
...
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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// Terminal (Exécuter le projet en mode normal)

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rdvcpp.exe
...
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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// Terminal (Exécuter le projet en mode root)

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sudo rdvcpp.exe
...
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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