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Celestin Apprentice 4
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Apache 1.0
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mod_userdir.c
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1995-12-04
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/* ====================================================================
* Copyright (c) 1995 The Apache Group. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* 4. The names "Apache Server" and "Apache Group" must not be used to
* endorse or promote products derived from this software without
* prior written permission.
*
* 5. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE APACHE GROUP OR
* IT'S CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Group and was originally based
* on public domain software written at the National Center for
* Supercomputing Applications, University of Illinois, Urbana-Champaign.
* For more information on the Apache Group and the Apache HTTP server
* project, please see <http://www.apache.org/>.
*
*/
/*
* mod_userdir... implement the UserDir command. Broken away from the
* Alias stuff for a couple of good and not-so-good reasons:
*
* 1) It shows a real minimal working example of how to do something like
* this.
* 2) I know people who are actually interested in changing this *particular*
* aspect of server functionality without changing the rest of it. That's
* what this whole modular arrangement is supposed to be good at...
*/
#include "httpd.h"
#include "http_config.h"
module userdir_module;
/*
* Sever config for this module is a little unconventional...
* It's just one string anyway, so why pretend?
*/
void *create_userdir_config (pool *dummy, server_rec *s) {
return (void*)DEFAULT_USER_DIR;
}
char *set_user_dir (cmd_parms *cmd, void *dummy, char *arg)
{
void *server_conf = cmd->server->module_config;
set_module_config (server_conf, &userdir_module, pstrdup (cmd->pool, arg));
return NULL;
}
command_rec userdir_cmds[] = {
{ "UserDir", set_user_dir, NULL, RSRC_CONF, TAKE1,
"the public subdirectory in users' home directories, or 'disabled'" },
{ NULL }
};
int translate_userdir (request_rec *r)
{
void *server_conf = r->server->module_config;
char *userdir = (char *)get_module_config(server_conf, &userdir_module);
char *name = r->uri;
if (userdir != NULL && strcasecmp(userdir, "disabled") != 0 &&
name[0] == '/' && name[1] == '~')
{
struct passwd *pw;
char *w, *dname;
dname = name + 2;
w = getword(r->pool, &dname, '/');
if(!(pw=getpwnam(w)))
return NOT_FOUND;
/* The 'dname' funny business involves backing it up to capture
* the '/' delimiting the "/~user" part from the rest of the URL,
* in case there was one (the case where there wasn't being just
* "GET /~user HTTP/1.0", for which we don't want to tack on a
* '/' onto the filename).
*/
if (dname[-1] == '/') --dname;
r->filename = pstrcat (r->pool, pw->pw_dir, "/", userdir, dname, NULL);
return OK;
}
return DECLINED;
}
module userdir_module = {
STANDARD_MODULE_STUFF,
NULL, /* initializer */
NULL, /* dir config creater */
NULL, /* dir merger --- default is to override */
create_userdir_config, /* server config */
NULL, /* merge server config */
userdir_cmds, /* command table */
NULL, /* handlers */
translate_userdir, /*filename translation */
NULL, /* check_user_id */
NULL, /* check auth */
NULL, /* check access */
NULL, /* type_checker */
NULL, /* fixups */
NULL /* logger */
};