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 #include <apt-pkg/hashes.h>
  15
  16 #include <unistd.h>
  17 #include <system.h>
  18                                                                         /*}}}*/
  19
  20 // Hashes::AddFD - Add the contents of the FD                           /*{{{*/
  21 // ---------------------------------------------------------------------
  22 /* */
  23 bool Hashes::AddFD(int Fd,unsigned long Size)
  24 {
  25    unsigned char Buf[64*64];
  26    int Res = 0;
  27    while (Size != 0)
  28    {
  29       Res = read(Fd,Buf,min(Size,(unsigned long)sizeof(Buf)));
  30       if (Res < 0 || (unsigned)Res != min(Size,(unsigned long)sizeof(Buf)))
  31          return false;
  32       Size -= Res;
  33       MD5.Add(Buf,Res);
  34       SHA1.Add(Buf,Res);
  35       SHA256.Add(Buf,Res);
  36    }
  37    return true;
  38 }
  39                                                                         /*}}}*/
  40