ebcdic.html

这个是我在web培训时老师提供的手册

        routines, I added an "ebcdic/ascii conversion layer" which
        would be crossed on every puts/write/get/gets, and a
        conversion flag which allowed enabling/disabling the
        conversions on-the-fly. Usually, a document crosses this
        layer twice from its origin source (a file or CGI output) to
        its destination (the requesting client): <code>file -&gt;
        Apache</code>, and <code>Apache -&gt; client</code>.</p>

        <p>The server can now read the header lines of a CGI-script
        output in EBCDIC format, and then find out that the remainder
        of the script's output is in ASCII (like in the case of the
        output of a WWW Counter program: the document body contains a
        GIF image). All header processing is done in the native
        EBCDIC format; the server then determines, based on the type
        of document being served, whether the document body (except
        for the chunking information, of course) is in ASCII already
        or must be converted from EBCDIC.</p>
      </li>

      <li>
        <p>For Text documents (MIME types text/plain, text/html
        <em>etc.</em>), an implicit translation to ASCII can be
        used, or (if the users prefer to store some documents in
        raw ASCII form for faster serving, or because the files
        reside on a NFS-mounted directory tree) can be served
        without conversion.</p>

        <p><strong>Example:</strong></p>

        <p>to serve files with the suffix <code>.ahtml</code> as a
        raw ASCII <code>text/html</code> document without implicit
        conversion (and suffix <code>.ascii</code> as ASCII
        <code>text/plain</code>), use the directives:</p>

        <div class="example"><p><code>
          AddType  text/x-ascii-html  .ahtml <br />
          AddType  text/x-ascii-plain .ascii
        </code></p></div>

        <p>Similarly, any <code>text/foo</code> MIME type can be
        served as "raw ASCII" by configuring a MIME type
        "<code>text/x-ascii-foo</code>" for it using
        <code>AddType</code>.</p>
      </li>

      <li>
        <p>Non-text documents are always served "binary" without
        conversion. This seems to be the most sensible choice for,
        .例如，GIF/ZIP/AU file types. This of course
        requires the user to copy them to the mainframe host using
        the "<code>rcp -b</code>" binary switch.</p>
      </li>

      <li>
        <p>Server parsed files are always assumed to be in native
        (<em>i.e.</em>, EBCDIC) format as used on the machine, and
        are converted after processing.</p>
      </li>

      <li>
        <p>For CGI output, the CGI script determines whether a
        conversion is needed or not: by setting the appropriate
        Content-Type, text files can be converted, or GIF output can
        be passed through unmodified. An example for the latter case
        is the wwwcount program which we ported as well.</p>
      </li>

    </ol>

  </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section">
<h2><a name="document" id="document">Document Storage Notes</a></h2>

    

    <h3><a name="binary" id="binary">Binary Files</a></h3>

      

      <p>All files with a <code>Content-Type:</code> which does not
      start with <code>text/</code> are regarded as <em>binary
      files</em> by the server and are not subject to any conversion.
      Examples for binary files are GIF images, gzip-compressed files
      and the like.</p>

      <p>When exchanging binary files between the mainframe host and
      a Unix machine or Windows PC, be sure to use the ftp "binary"
      (<code>TYPE I</code>) command, or use the
      <code>rcp -b</code> command from the mainframe host (the
      <code>-b</code> switch is not supported in unix
      <code>rcp</code>'s).</p>

    

    <h3><a name="text" id="text">Text Documents</a></h3>

      

      <p>The default assumption of the server is that Text Files
      (<em>i.e.</em>, all files whose <code>Content-Type:</code>
      starts with <code>text/</code>) are stored in the native
      character set of the host, EBCDIC.</p>

    

    <h3><a name="ssi" id="ssi">Server Side Included Documents</a></h3>

      

      <p>SSI documents must currently be stored in EBCDIC only.
      No provision is made to convert it from ASCII before
      processing.</p>

    

  </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section">
<h2><a name="modules" id="modules">Apache Modules' Status</a></h2>

    

    <table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="bordered">
<tr><th>Module</th><th>Status</th><th>Notes</th></tr>
<tr><td><code class="module"><a href="../mod/core.html">core</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_access.html">mod_access</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_actions.html">mod_actions</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_alias.html">mod_alias</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_asis.html">mod_asis</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_auth.html">mod_auth</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_auth_anon.html">mod_auth_anon</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_auth_dbm.html">mod_auth_dbm</a></code></td><td class="centered">?</td><td>with own <code>libdb.a</code></td></tr>
<tr><td><code class="module"><a href="../mod/mod_autoindex.html">mod_autoindex</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_cern_meta.html">mod_cern_meta</a></code></td><td class="centered">?</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code>mod_digest</code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_dir.html">mod_dir</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_so.html">mod_so</a></code></td><td class="centered">-</td><td>no shared libs</td></tr>
<tr><td><code class="module"><a href="../mod/mod_env.html">mod_env</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_example.html">mod_example</a></code></td><td class="centered">-</td><td>(test bed only)</td></tr>
<tr><td><code class="module"><a href="../mod/mod_expires.html">mod_expires</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_headers.html">mod_headers</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_imagemap.html">mod_imagemap</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_include.html">mod_include</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_info.html">mod_info</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code>mod_log_agent</code></td><td class="centered">+</td><td /></tr>
<tr><td><code>mod_log_config</code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_log_referer.html">mod_log_referer</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_mime.html">mod_mime</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_mime_magic.html">mod_mime_magic</a></code></td><td class="centered">?</td><td>not ported yet</td></tr>
<tr><td><code class="module"><a href="../mod/mod_negotiation.html">mod_negotiation</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code></td><td class="centered">+</td><td>untested</td></tr>
<tr><td><code class="module"><a href="../mod/mod_setenvif.html">mod_setenvif</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_speling.html">mod_speling</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_status.html">mod_status</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_unique_id.html">mod_unique_id</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_userdir.html">mod_userdir</a></code></td><td class="centered">+</td><td /></tr>
<tr><td><code class="module"><a href="../mod/mod_usertrack.html">mod_usertrack</a></code></td><td class="centered">?</td><td>untested</td></tr>
</table>

  </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section">
<h2><a name="third-party" id="third-party">Third Party Modules' Status</a></h2>

    

    <table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="bordered">
<tr><th>Module</th><th>Status</th><th>Notes</th></tr>
<tr><td><code><a href="http://java.apache.org/">mod_jserv</a>
        </code></td><td class="centered">-</td><td>JAVA still being ported.</td></tr>
<tr><td><code><a href="http://www.php.net/">mod_php3</a></code></td><td class="centered">+</td><td><code>mod_php3</code> runs fine, with LDAP and GD
        and FreeType libraries.</td></tr>
<tr><td><code><a href="http://hpwww.ec-lyon.fr/~vincent/apache/mod_put.html">mod_put</a></code></td><td class="centered">?</td><td>untested</td></tr>
<tr><td><code><a href="ftp://hachiman.vidya.com/pub/apache/">mod_session</a></code></td><td class="centered">-</td><td>untested</td></tr>
</table>

  </div></div>
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