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  • Hash : 3562e384
    Author : Paul Eggert
    Date : 2017-09-16T13:03:36

    Prefer https: URLs
    
    In Gnulib, Emacs, etc. we are changing ftp: and http: URLs to use
    https:, to discourage man-in-the-middle attacks when downloading
    software. The attached patch propagates these changes upstream to
    Automake.  This patch does not affect files that Automake is
    downstream of, which I'll patch separately.
    
    Althouth the resources are not secret, plain HTTP is vulnerable to
    malicious routers that tamper with responses from GNU servers,
    and this sort of thing is all too common when people in some other
    countries browse US-based websites. See, for example:
    
    Aceto G, Botta A, Pescapé A, Awan MF, Ahmad T, Qaisar
    S. Analyzing internet censorship in Pakistan. RTSI
    2016. https://dx.doi.org/10.1109/RTSI.2016.7740626
    
    HTTPS is not a complete solution here, but it can be a significant
    help. The GNU project regularly serves up code to users, so we should
    take some care here.
    

  • README

  • This is the 'contrib' directory of the GNU Automake distribution.
    
    Here you'll find additions to the Automake base distribution, in form of
    makefile fragments, m4 macros, scripts, documentation, et cetera.  Such
    addition that might be useful for a significant percentage of its general
    audience, but (for one reason or another) are not deemed appropriate for
    inclusion into the Automake core.
    
    There are several reasons for which a feature can be kept in contrib:
    
      1. The long-term usefulness of the feature is debatable and uncertain;
         on-field and real-word testing are necessary to prove or disprove
         its usefulness, before the feature can be committed into the Automake
         core (as doing so too early would later force us to continue the
         support for backward-compatibility, even if the features proves
         flawed or fails to attract widespread use).
    
      2. The APIs or overall design of the feature are still unstable, and
         need on-field testing to iron warts and usability bugs, or uncover
         potential flaws.
    
      3. The feature was an historical one, mostly obsoleted but still used
         "here and there" in the wild; so we want to to deprecate it and
         remove it from the Automake core, but cannot remove it altogether,
         for the sake of those still-existing usage.  So it gets moved in
         contrib.