Re: How to determine if file is binary or text?

From	GOTHIER Nathan <nathan.gothier@gmail.com>
Newsgroups	comp.lang.c
Subject	Re: How to determine if file is binary or text?
Date	2017-06-08 15:14 +0200
Organization	A noiseless patient Spider
Message-ID	<20170608151418.23db2b85632edc10462bec4a@gmail.com> (permalink)
References	<oh9h55$a0q$2@dont-email.me> <slrnojgstb.1kjn.grahn+nntp@frailea.sa.invalid> <oh9tla$p61$1@dont-email.me> <20170608002352.b649151a8ab2437ccdbe7b44@gmail.com> <rumhjc11ba9ue2u0j3ermjr312367g7vhm@4ax.com>

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On Thu, 08 Jun 2017 00:11:53 -0500
Robert Wessel <robertwessel2@yahoo.com> wrote:

> Why would you assume that the user is not malicious, and is passing a
> deliberately malformed input to cause some unpleasant effect?  Only if
> you can truly be certain of the users virtue, and skill at maintaining
> that virtue (IOW, you can trust that the user has not been fooled be
> some other actor into passing a malformed input), can you reasonably
> avoid validating the input.

Why would you assume the programmer support any malicious users? If the user
feed the program with bad data it is reasonable the programmer let him down
with his incompatible data. However it requires little effort to filter the
input data by the file extension and signature.

Thread

How to determine if file is binary or text? DFS <nospam@dfs.com> - 2017-06-07 14:40 -0400
  Re: How to determine if file is binary or text? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-06-07 20:46 +0200
  Re: How to determine if file is binary or text? bartc <bc@freeuk.com> - 2017-06-07 19:58 +0100
  Re: How to determine if file is binary or text? scott@slp53.sl.home (Scott Lurndal) - 2017-06-07 19:05 +0000
  Re: How to determine if file is binary or text? supercat@casperkitty.com - 2017-06-07 12:10 -0700
  Re: How to determine if file is binary or text? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-06-07 16:25 -0400
  Re: How to determine if file is binary or text? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2017-06-07 21:44 +0000
    Re: How to determine if file is binary or text? DFS <nospam@dfs.com> - 2017-06-07 18:14 -0400
      Re: How to determine if file is binary or text? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-06-08 00:23 +0200
        Re: How to determine if file is binary or text? Robert Wessel <robertwessel2@yahoo.com> - 2017-06-08 00:11 -0500
          Re: How to determine if file is binary or text? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-06-08 15:14 +0200
            Re: How to determine if file is binary or text? Robert Wessel <robertwessel2@yahoo.com> - 2017-06-08 11:06 -0500
          Re: How to determine if file is binary or text? raltbos@xs4all.nl (Richard Bos) - 2017-06-17 18:28 +0000
      Re: How to determine if file is binary or text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-06-07 23:30 +0100
        Re: How to determine if file is binary or text? DFS <nospam@dfs.com> - 2017-06-07 20:26 -0400
          Re: How to determine if file is binary or text? bartc <bc@freeuk.com> - 2017-06-08 01:30 +0100
            Re: How to determine if file is binary or text? DFS <nospam@dfs.com> - 2017-06-07 23:50 -0400
              Re: How to determine if file is binary or text? mark.bluemel@gmail.com - 2017-06-08 02:13 -0700
                Re: How to determine if file is binary or text? mark.bluemel@gmail.com - 2017-06-08 04:05 -0700
                Re: How to determine if file is binary or text? DFS <nospam@dfs.com> - 2017-06-08 09:21 -0400
                Re: How to determine if file is binary or text? Ike Naar <ike@iceland.freeshell.org> - 2017-06-08 14:19 +0000
                Re: How to determine if file is binary or text? DFS <nospam@dfs.com> - 2017-06-08 12:07 -0400
                Re: How to determine if file is binary or text? scott@slp53.sl.home (Scott Lurndal) - 2017-06-08 16:14 +0000
                Re: How to determine if file is binary or text? DFS <nospam@dfs.com> - 2017-06-08 12:37 -0400
                Re: How to determine if file is binary or text? scott@slp53.sl.home (Scott Lurndal) - 2017-06-08 16:54 +0000
                Re: How to determine if file is binary or text? DFS <nospam@dfs.com> - 2017-06-08 13:14 -0400
                An old version of what??? (Was: How to determine if file is binary or text?) gazelle@shell.xmission.com (Kenny McCormack) - 2017-06-09 17:13 +0000
              Re: How to determine if file is binary or text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-06-08 11:15 +0100
          Re: How to determine if file is binary or text? scott@slp53.sl.home (Scott Lurndal) - 2017-06-08 12:49 +0000
          Re: How to determine if file is binary or text? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2017-06-08 14:01 +0000
          Re: How to determine if file is binary or text? Michael Forsythe <forsythe@example.com> - 2017-06-08 15:33 +0000
            Re: How to determine if file is binary or text? DFS <nospam@dfs.com> - 2017-06-08 18:43 -0400
              Re: How to determine if file is binary or text? jak <please@nospam.tnx> - 2017-06-09 08:46 +0200
      Re: How to determine if file is binary or text? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-06-07 19:23 -0400
      Re: How to determine if file is binary or text? Barry Schwarz <schwarzb@dqel.com> - 2017-06-07 16:50 -0700
      Re: How to determine if file is binary or text? "Pascal J. Bourguignon" <pjb@informatimago.com> - 2017-06-08 15:51 +0200
  Re: How to determine if file is binary or text? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2017-06-07 17:17 -0600
    Re: How to determine if file is binary or text? Keith Thompson <kst-u@mib.org> - 2017-06-07 19:21 -0700
      Re: How to determine if file is binary or text? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2017-06-07 21:37 -0600
  Re: How to determine if file is binary or text? Noob <root@127.0.0.1> - 2017-06-08 08:40 +0200
  Re: How to determine if file is binary or text? gordonb.t9rom@burditt.org (Gordon Burditt) - 2017-06-08 12:03 -0500

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