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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2002 The Apache Software Foundation. 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. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``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 SOFTWARE FOUNDATION OR
* ITS 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 Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* Portions of this software are based upon public domain software
* originally written at the National Center for Supercomputing Applications,
* University of Illinois, Urbana-Champaign.
*/
/*
* http_auth: authentication
*
* Rob McCool
*
* Adapted to Apache by rst.
*
* dirkx - Added Authoritative control to allow passing on to lower
* modules if and only if the userid is not known to this
* module. A known user with a faulty or absent password still
* causes an AuthRequired. The default is 'Authoritative', i.e.
* no control is passed along.
*/
#include "apr_strings.h"
#include "apr_md5.h" /* for apr_password_validate */
#include "ap_config.h"
#include "ap_provider.h"
#include "httpd.h"
#include "http_config.h"
#include "http_core.h"
#include "http_log.h"
#include "http_protocol.h"
#include "http_request.h"
#include "mod_auth.h"
typedef struct {
char *pwfile;
} authn_file_config_rec;
static void *create_authn_file_dir_config(apr_pool_t *p, char *d)
{
authn_file_config_rec *conf = apr_palloc(p, sizeof(*conf));
conf->pwfile = NULL; /* just to illustrate the default really */
return conf;
}
static const char *set_authn_file_slot(cmd_parms *cmd, void *offset,
const char *f, const char *t)
{
if (t && strcmp(t, "standard")) {
return apr_pstrcat(cmd->pool, "Invalid auth file type: ", t, NULL);
}
return ap_set_file_slot(cmd, offset, f);
}
static const command_rec authn_file_cmds[] =
{
AP_INIT_TAKE12("AuthUserFile", set_authn_file_slot,
(void *)APR_OFFSETOF(authn_file_config_rec, pwfile),
OR_AUTHCFG, "text file containing user IDs and passwords"),
{NULL}
};
module AP_MODULE_DECLARE_DATA authn_file_module;
static authn_status check_password(request_rec *r, const char *user,
const char *password)
{
authn_file_config_rec *conf = ap_get_module_config(r->per_dir_config,
&authn_file_module);
ap_configfile_t *f;
char l[MAX_STRING_LEN];
apr_status_t status;
char *file_password = NULL;
status = ap_pcfg_openfile(&f, r->pool, conf->pwfile);
if (status != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r,
"Could not open password file: %s", conf->pwfile);
return AUTH_GENERAL_ERROR;
}
while (!(ap_cfg_getline(l, MAX_STRING_LEN, f))) {
const char *rpw, *w;
/* Skip # or blank lines. */
if ((l[0] == '#') || (!l[0])) {
continue;
}
rpw = l;
w = ap_getword(r->pool, &rpw, ':');
if (!strcmp(user, w)) {
file_password = ap_getword(r->pool, &rpw, ':');
break;
}
}
ap_cfg_closefile(f);
if (!file_password) {
return AUTH_USER_NOT_FOUND;
}
status = apr_password_validate(password, file_password);
if (status != APR_SUCCESS) {
return AUTH_DENIED;
}
return AUTH_GRANTED;
}
static authn_status get_realm_hash(request_rec *r, const char *user,
const char *realm, char **rethash)
{
authn_file_config_rec *conf = ap_get_module_config(r->per_dir_config,
&authn_file_module);
ap_configfile_t *f;
char l[MAX_STRING_LEN];
apr_status_t status;
char *file_hash = NULL;
status = ap_pcfg_openfile(&f, r->pool, conf->pwfile);
if (status != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r,
"Could not open password file: %s", conf->pwfile);
return AUTH_GENERAL_ERROR;
}
while (!(ap_cfg_getline(l, MAX_STRING_LEN, f))) {
const char *rpw, *w, *x;
/* Skip # or blank lines. */
if ((l[0] == '#') || (!l[0])) {
continue;
}
rpw = l;
w = ap_getword(r->pool, &rpw, ':');
x = ap_getword(r->pool, &rpw, ':');
if (x && w && !strcmp(user, w) && !strcmp(realm, x)) {
/* Remember that this is a md5 hash of user:realm:password. */
file_hash = ap_getword(r->pool, &rpw, ':');
break;
}
}
ap_cfg_closefile(f);
if (!file_hash) {
return AUTH_USER_NOT_FOUND;
}
*rethash = file_hash;
return AUTH_USER_FOUND;
}
static const authn_provider authn_file_provider =
{
&check_password,
&get_realm_hash,
};
static void register_hooks(apr_pool_t *p)
{
ap_register_provider(p, AUTHN_PROVIDER_GROUP, "file", &authn_file_provider);
}
module AP_MODULE_DECLARE_DATA authn_file_module =
{
STANDARD20_MODULE_STUFF,
create_authn_file_dir_config, /* dir config creater */
NULL, /* dir merger --- default is to override */
NULL, /* server config */
NULL, /* merge server config */
authn_file_cmds, /* command apr_table_t */
register_hooks /* register hooks */
};
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