apt-pkg/contrib/hashes.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: hashes.cc,v 1.1 2001/03/06 07:15:29 jgg Exp $
   4 /* ######################################################################
   5
   6    Hashes - Simple wrapper around the hash functions
   7
   8    This is just used to make building the methods simpler, this is the
   9    only interface required..
  10
  11    ##################################################################### */
  12                                                                         /*}}}*/
  13 // Include Files                                                        /*{{{*/
  14 #ifdef __GNUG__
  15 #pragma implementation "apt-pkg/hashes.h"
  16 #endif
  17
  18 #include <apt-pkg/hashes.h>
  19
  20 #include <unistd.h>
  21 #include <system.h>
  22                                                                         /*}}}*/
  23
  24 // Hashes::AddFD - Add the contents of the FD                           /*{{{*/
  25 // ---------------------------------------------------------------------
  26 /* */
  27 bool Hashes::AddFD(int Fd,unsigned long Size)
  28 {
  29    unsigned char Buf[64*64];
  30    int Res = 0;
  31    while (Size != 0)
  32    {
  33       Res = read(Fd,Buf,min(Size,(unsigned long)sizeof(Buf)));
  34       if (Res < 0 || (unsigned)Res != min(Size,(unsigned long)sizeof(Buf)))
  35          return false;
  36       Size -= Res;
  37       MD5.Add(Buf,Res);
  38       SHA1.Add(Buf,Res);
  39       SHA256.Add(Buf,Res);
  40    }
  41    return true;
  42 }
  43                                                                         /*}}}*/
  44