Return to rplsum.c CVS log

Up to [local] / rpl / rplsums

Cohérence.

    1: /*
    2: ================================================================================
    3:   RPL/2 (R) version 4.0.12
    4:   Copyright (C) 1989-2010 Dr. BERTRAND Joël
    5: 
    6:   This file is part of RPL/2.
    7: 
    8:   RPL/2 is free software; you can redistribute it and/or modify it
    9:   under the terms of the CeCILL V2 License as published by the french
   10:   CEA, CNRS and INRIA.
   11:  
   12:   RPL/2 is distributed in the hope that it will be useful, but WITHOUT
   13:   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   14:   FITNESS FOR A PARTICULAR PURPOSE.  See the CeCILL V2 License
   15:   for more details.
   16:  
   17:   You should have received a copy of the CeCILL License
   18:   along with RPL/2. If not, write to info@cecill.info.
   19: ================================================================================
   20: */
   21: 
   22: 
   23: #include <stdio.h>
   24: #include <stdlib.h>
   25: #include <unistd.h>
   26: #include "openssl/evp.h"
   27: #include <sys/stat.h>
   28: #include <fcntl.h>
   29: 
   30: int
   31: main(int argc, char *argv[])
   32: {
   33:     EVP_MD_CTX          contexte;
   34: 
   35:     int                 in_fd;
   36: 
   37:     off_t               taille_fichier;
   38: 
   39:     ssize_t             octets_lus;
   40: 
   41:     struct stat         stat_buf;
   42: 
   43:     unsigned char       *chaine;
   44:     unsigned char       *fichier;
   45:     unsigned char       somme[EVP_MAX_MD_SIZE];
   46:     unsigned char       somme_hexadecimale[2 * EVP_MAX_MD_SIZE];
   47: 
   48:     unsigned int        i;
   49:     unsigned int        longueur_somme;
   50: 
   51:     if (argc != 2)
   52:     {
   53:         printf("Usage: rplmd5sum filename\n");
   54:         exit(EXIT_FAILURE);
   55:     }
   56: 
   57:     fichier = argv[1];
   58: 
   59:     if (stat(fichier, &stat_buf) != 0)
   60:     {
   61:         fprintf(stderr, "stat() failed\n");
   62:         perror("stat");
   63:         exit(EXIT_FAILURE);
   64:     }
   65: 
   66:     taille_fichier = stat_buf.st_size;
   67: 
   68:     if ((chaine = malloc(taille_fichier)) == NULL)
   69:     {
   70:         fprintf(stderr, "malloc() failed\n");
   71:         exit(EXIT_FAILURE);
   72:     }
   73: 
   74:     if ((in_fd = open(fichier, 0, O_RDONLY)) < 0)
   75:     {
   76:         fprintf(stderr, "open() failed\n");
   77:         perror("open");
   78:         free(chaine);
   79:         exit(EXIT_FAILURE);
   80:     }
   81: 
   82:     if ((octets_lus = read(in_fd, chaine, taille_fichier)) != taille_fichier)
   83:     {
   84: #       ifndef OS2
   85:         // Sur des fichiers binaires et sous OS/2, le nombre d'octets lus peut
   86:         // etre inferieur à la taille du fichier sur le disque.
   87: 
   88:         fprintf(stderr, "read() failed\n");
   89:         fprintf(stderr, "Meditation: %d < %d\n", (int) octets_lus,
   90:                 (int) taille_fichier);
   91:         perror("read");
   92:         close(in_fd);
   93:         free(chaine);
   94:         exit(EXIT_FAILURE);
   95: #       endif
   96:     }
   97: 
   98:     close(in_fd);
   99: 
  100:     if (EVP_DigestInit(&contexte, EVP_sum()) != 1)
  101:     {
  102:         fprintf(stderr, "EVP_DigestInit() failed\n");
  103:         close(in_fd);
  104:         free(chaine);
  105:         exit(EXIT_FAILURE);
  106:     }
  107: 
  108:     if (EVP_DigestUpdate(&contexte, chaine, taille_fichier) != 1)
  109:     {
  110:         fprintf(stderr, "EVP_DigestUpdate() failed\n");
  111:         close(in_fd);
  112:         free(chaine);
  113:         exit(EXIT_FAILURE);
  114:     }
  115: 
  116:     if (EVP_DigestFinal_ex(&contexte, somme, &longueur_somme) != 1)
  117:     {
  118:         fprintf(stderr, "EVP_DigestFinal_ex() failed\n");
  119:         close(in_fd);
  120:         free(chaine);
  121:         exit(EXIT_FAILURE);
  122:     }
  123: 
  124:     EVP_MD_CTX_cleanup(&contexte);
  125:     free(chaine);
  126: 
  127:     for(i = 0; i < longueur_somme; i++)
  128:     {
  129:         sprintf(&(somme_hexadecimale[2 * i]), "%02x", somme[i]);
  130:     }
  131: 
  132:     printf("%s\n", somme_hexadecimale);
  133: 
  134:     return(EXIT_SUCCESS);
  135: }
  136: 
  137: // vim: ts=4