athttpd-authentication.html

来自「ecos3.0 beta 的官方文档,html格式」· HTML 代码 · 共 221 行

HTML

221 行

<!-- Copyright (C) 2009 Free Software Foundation, Inc.                                -->
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
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><TITLE
>Authentication</TITLE
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><A
NAME="ATHTTPD-AUTHENTICATION"
>Authentication</A
></H1
><P
>The server supports both Basic (base64) and Digest (MD5) authentication, 
although they have not been tested with all clients. In this implementation, 
the contents of certain directories of the file system can be protected, such
that the user will be required to issue a username/password to access the
content of the directory.</P
><P
>To protect a directory with a basic authentication, there is a 
specific macro:</P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>CYG_HTTPD_AUTH_TABLE_ENTRY(entry, path, domain, un, pw, mode)

entry            : an identifier unique to this entry.
path             : the path to the directory whose content must be
                    authenticated before it is sent out
domain           : a domain identifier for this directory.
un               : username for authentication
pw               : password for authentication
mode             : CYG_HTTPD_AUTH_BASIC for base64 encoding or 
                   CYG_HTTPD_AUTH_DIGEST for MD5 encoding</PRE
></TD
></TR
></TABLE
><P
>for example, to require basic authentication of the content of directory 
"/ecos/" with a username of "foo" and password "bar", the following is used:</P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>CYG_HTTPD_AUTH_TABLE_ENTRY(hal_domain1_entry,          \
                           "/ecos/",    "ecos_domain", \
                           "foo",       "bar",         \
                           CYG_HTTPD_AUTH_BASIC);</PRE
></TD
></TR
></TABLE
><P
>Any request for a file in the directory /ecos/ will now trigger a
credential check. These credentials, once provided, are automatically sent by
the client for every request within the particular domain.</P
><P
>It must be noticed that the path name set in the macro is relative to the
HTML document directory, CYGDAT_NET_HTTPD_SERVEROPT_HTMLDIR and it is the
first part of the path provided by the client request (including the leading
slash).</P
><P
>In order to reduce the footprint of the server, authentication
is not enabled by default, and so the option CYGOPT_NET_ATHTTPD_USE_AUTH must
be used to enable support for basic and digest authentication.</P
><P
>The MD5 digest authentication support is implemented using the RSA
Data Security, Inc. MD5 Message-Digest Algorithm. Derivative works with
MD5 digest authentication included must be identified as "derived from the
RSA Data Security, Inc. MD5 Message-Digest Algorithm" in all material
mentioning or referencing the derived work. See the file md5.c within this
package for license details.</P
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