fin q8

question8/Makefile

+all : rmg
+
+rmg : check_pass.o
+	gcc -o $@ $^
+
+check_pass.o : check_pass.c
+	gcc -c -o $@ $^
+
+clean:
+	rm -rf *.o
+	rm -rf rmg

question8/check_pass.c

+#include "check_pass.h"
+
+int verification_motDePasse(int identifiant, char *pwd){
+    FILE * fp;
+    char * line = NULL;
+    size_t len = 0;
+    ssize_t read;
+
+    char *idRead = NULL;
+    char *pwdRead = NULL;
+
+    fp = fopen("/home/admin/passwd", "r");
+    if (fp == NULL){
+        printf("Erreur fichier mot de passe\n");
+        exit(EXIT_FAILURE);
+    }
+
+    while ((read = getline(&line, &len, fp)) != -1) {
+        idRead = strtok(line, ":");
+        if(atoi(idRead) == identifiant){
+            pwdRead = strtok(NULL,":");
+            pwdRead = strtok(pwdRead,"\n");
+            fclose(fp);
+            return strcmp(pwdRead,pwd);
+        }
+    }
+}
+
+int getIdentifiant(char *file) {
+
+    struct stat stats;
+
+    if (stat(file, &stats) == 0) {
+        return stats.st_gid;
+    } else {
+        perror("impossible de recuperer les identifiants du fichier");
+        exit(EXIT_FAILURE);
+    }
+}
\ No newline at end of file

question8/check_pass.h

+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/stat.h>
+
+int verification_motDePasse(int identifiant, char *pwd);
+int getIdentifiant(char *file);
\ No newline at end of file

question8/rmg.c

+#include <stdlib.h>
+#include <stdio.h>
+
+#include "check_pass.h"
+
+int main(int argc, char *argv[]) {
+    if(argc<3){
+        printf("parametre non valide\n");
+        printf("exemple utilisation\n");
+        printf("rmg file password\n");
+    }
+    else{
+        uid_t uid = getuid();
+        gid_t gid = getuid();
+
+        // Verification id
+        if(getIdentifiant(argv[1])!=uid){
+            printf("id non valide\n");
+            exit(EXIT_FAILURE);
+        }
+
+        //verification mdp
+        if(verification_motDePasse(gid,argv[2])){
+            if(remove(argv[1]) == 0){
+                printf("Fichier supprimer\n");
+            }
+
+            else{ printf("Impossible de supprimer le fichier\n"); }        
+        }
+
+        else{ printf("Mot de passe non valide\n"); } 
+    }
+
+}
\ No newline at end of file