📄 asg07.htm
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Jason A. Dour
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CGI under different UID
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<A HREF="javascript:if(confirm('http://www.louisville.edu/~jadour01/mothersoft \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.louisville.edu/~jadour01/mothersoft'" tppabs="http://www.louisville.edu/~jadour01/mothersoft"> http://www.louisville.edu/~jadour01/mothersoft</A></FONT>
</TABLE><P>This module is a drop-in replacement for the mod_cgi provided in the Apache release. It allows you to transparently change the UID of CGI scripts to match that of a user.
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<P>To enable the functionality, just add the following to your global access configuration file (access.conf):
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<FONT COLOR="#000080"><Directory <I>userdir</I>/*/cgi-bin>
Options ExecCGI
</Directory></FONT></PRE>
<P>When the server receives a CGI request, it checks it see if it came from a UserDir. If it did, it will pass the request to a supporting CGI program, suCGI, which will check the request and run it with the UID of the appropriate user.
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<FONT SIZE=5 COLOR="#FF0000"><B>mod_auth_dbi</B></FONT></CENTER></H3>
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Source:
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mod_auth_dbi.c
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Author:
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Doug MacEachern
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Authentication
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Home:
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<A HREF="javascript:if(confirm('http://www.osf.org/~dougm/apache \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.osf.org/~dougm/apache'" tppabs="http://www.osf.org/~dougm/apache"> http://www.osf.org/~dougm/apache</A></FONT>
</TABLE><P>This module provides Perl DBI authentication. Database interface (DBI) provides a set of functions, variables, and conventions that you can use to access a database. This programming interface is independent of the database in use. For additional information on DBI, check <A HREF="javascript:if(confirm('http://www.hermetica.com/technologia/DBI \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.hermetica.com/technologia/DBI'" tppabs="http://www.hermetica.com/technologia/DBI"> http://www.hermetica.com/technologia/DBI</A>.
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<FONT SIZE=4 COLOR="#FF0000"><B>Directives</B></FONT></CENTER></H4>
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<P>Mod_auth_dbi adds the following directives:
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<LI>AuthDBIAuth
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<LI>AuthDBIDB
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<LI>AuthDBIDriver
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<LI>AuthDBINameField
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<LI>AuthDBIPasswordField
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<LI>AuthDBIUser
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<LI>AuthDBIUserTable
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<FONT SIZE=4 COLOR="#FF0000"><B>AuthDBIAuth</B></FONT></CENTER></H5>
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Syntax:
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AuthDBIAuth <I>password</I></FONT>
</TABLE><P>This directive sets the DBI password. It is optional, depending on the driver used.
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<FONT SIZE=4 COLOR="#FF0000"><B>AuthDBIDB</B></FONT></CENTER></H5>
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Syntax:
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AuthDBIDB <I>databaseName</I></FONT>
</TABLE><P>This directive sets the name of the database to use.
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<FONT SIZE=4 COLOR="#FF0000"><B>AuthDBIDriver</B></FONT></CENTER></H5>
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AuthDBIDriver <I>nameOfDBIDriver</I></FONT>
</TABLE><P>AuthDBIDriver sets the name of the DBI driver (for example, Oracle).
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<FONT SIZE=4 COLOR="#FF0000"><B>AuthDBINameField</B></FONT></CENTER></H5>
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AuthDBINameField <I>fieldName</I></FONT>
</TABLE><P>This directive sets the fieldname within the AuthDBIUserTable in AuthDBIDB database where the username can be found.
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<FONT SIZE=4 COLOR="#FF0000"><B>AuthDBIPasswordField</B></FONT></CENTER></H5>
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Syntax:
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AuthDBIPasswordFiled <I>fieldName</I></FONT>
</TABLE><P>This directive sets the fieldname within the AuthDBIUserTable in the AuthDBIDB database where the user's password can be found.
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<FONT SIZE=4 COLOR="#FF0000"><B>AuthDBIUser</B></FONT></CENTER></H5>
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AuthDBIUser <I>userName</I></FONT>
</TABLE><P>This directive sets the user's DBI username. It is optional depending on the driver used.
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<FONT SIZE=4 COLOR="#FF0000"><B>AuthDBIUserTable</B></FONT></CENTER></H5>
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AuthDBIUserTable <I>tableName</I></FONT>
</TABLE><P>This directive sets the tablename within the AuthDBIDB database where the user and password fields can be found.
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<FONT SIZE=5 COLOR="#FF0000"><B>mod_rewrite</B></FONT></CENTER></H3>
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mod_rewrite.c
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Ralf S. Engelschall
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URI rewriting
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<A HREF="javascript:if(confirm('http://www.engelschall.com/sw/mod_rewrite \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.engelschall.com/sw/mod_rewrite'" tppabs="http://www.engelschall.com/sw/mod_rewrite"> http://www.engelschall.com/sw/mod_rewrite</A></FONT>
</TABLE><P>This is a killer module that even has its own Web site (see Figure 7.2). It uses a regular expression parser to rewrite requested URLs and can use external databases in both ASCII or DBM format for mapping support. This module has been incorporated into the Apache 1.2 release (not yet made public at the time of this writing). Apache 1.2 incorporates a built-in regular expression library. The latest version of mod_rewrite uses this library, which further reduces its impact on Apache.
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<P><B> <A HREF="javascript:if(confirm('http://docs.rinet.ru:8080/Apachu/07asg02.gif \n\nThis file was not retrieved by Teleport Pro, because it was redirected to an invalid location. You should report this problem to the site\'s webmaster. \n\nDo you want to open it from the server?'))window.location='http://docs.rinet.ru:8080/Apachu/07asg02.gif'" tppabs="http://docs.rinet.ru:8080/Apachu/07asg02.gif">Figure 7.2. This module also has a nice home </B><B>page.</A></B>
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<P>mod_rewrite can replace several modules, including some of the default Apache modules (when properly configured). This is great because it can provide more comprehensive functionality while reducing the number of modules needed and the size of the Apache executable.
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<P>This module can easily replace mod_alias, mod_userdir (both Apache core modules), mod_userdir_virtual (not covered in this book), mod_userpath, and mod_uri_remap.
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<P>If you don't have use for a fully configurable URI rewrite module, there's an additional module that will replace the mod_alias and mod_userdir. This module, mod_rewrite_compat, uses mod_rewrite to provide a plug-and-play replacement to those other two modules.
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<P>Oh, yes—and this is not a minor detail[dm] mod_rewrite, together with the FastCGI module documentation, is by far the best-documented piece of software available for Apache. This one edges out the FastCGI docs a bit and is easier to use, so it takes first place on my list. Documentation for both these modules is commercial grade, matching documentation produced by Apple Computer or NeXT Software, Inc. (the best documentation I has ever used). Most other modules feature rather thin information that requires users and authors alike to spend a lot of time experimenting with software before they can get it to work. This usually means diving into the source code to determine what really is going on. I didn't have to do that with this one.
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<P>For information on mod_rewrite, see <A HREF="asg10.htm" tppabs="http://docs.rinet.ru:8080/Apachu/asg10.htm">Chapter 10</A>, "Apache Modules."
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<FONT SIZE=5 COLOR="#FF0000"><B>mod_neoinclude</B></FONT></CENTER></H3>
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Authors:
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Karl Lehenbauer, George Porter, Randy Kunkee, and Horace Vallas
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Type:
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Tcl-based, secure server-side scripting language
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Home:
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<A HREF="javascript:if(confirm('http://www.neosoft.com/neoscript \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.neosoft.com/neoscript'" tppabs="http://www.neosoft.com/neoscript"> http://www.neosoft.com/neoscript</A></FONT>
</TABLE><P>The neoinclude module processes NeoWebScript—a server-side scripting language based on Tcl. NeoWebScript programs can perform sophisticated data processing and dynamic HTML generation safely, without compromising the system. For comprehensive information on this module, please visit http://www.neosoft.com/neoscript.
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<FONT SIZE=5 COLOR="#FF0000"><B>mod_xinclude</B><B> (XSSI)</B></FONT></CENTER></H3>
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mod_xinclude.c
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Author:
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Howard Fear
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