home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Nebula 1
/
Nebula One.iso
/
Internet
/
WWW
/
apache_1.0.5
/
src
/
mod_auth_dbm.c
< prev
next >
Wrap
C/C++ Source or Header
|
1996-02-16
|
8KB
|
253 lines
/* ====================================================================
* 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
* 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 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/>.
*
*/
/*
* http_auth: authentication
*
* Rob McCool & Brian Behlendorf.
*
* Adapted to Shambhala by rst.
*/
#include "httpd.h"
#include "http_config.h"
#include "http_core.h"
#include "http_log.h"
#include "http_protocol.h"
#include <ndbm.h>
typedef struct {
char *auth_dbmpwfile;
char *auth_dbmgrpfile;
} dbm_auth_config_rec;
void *create_dbm_auth_dir_config (pool *p, char *d)
{
return pcalloc (p, sizeof(dbm_auth_config_rec));
}
command_rec dbm_auth_cmds[] = {
{ "AuthDBMUserFile", set_string_slot,
(void*)XtOffsetOf(dbm_auth_config_rec, auth_dbmpwfile),
OR_AUTHCFG, TAKE1, NULL },
{ "AuthDBMGroupFile", set_string_slot,
(void*)XtOffsetOf(dbm_auth_config_rec, auth_dbmgrpfile),
OR_AUTHCFG, TAKE1, NULL },
{ NULL }
};
module dbm_auth_module;
char *get_dbm_pw(request_rec *r, char *user, char *auth_dbmpwfile) {
DBM *f;
datum d, q;
char *pw = NULL;
q.dptr = user;
q.dsize = strlen(q.dptr);
if(!(f=dbm_open(auth_dbmpwfile,O_RDONLY,0664))) {
log_reason ("could not open dbm auth file", auth_dbmpwfile, r);
return NULL;
}
d = dbm_fetch(f, q);
if (d.dptr) {
pw = palloc (r->pool, d.dsize + 1);
strncpy(pw,d.dptr,d.dsize);
pw[d.dsize] = '\0'; /* Terminate the string */
}
dbm_close(f);
return pw;
}
/* We do something strange with the group file. If the group file
* contains any : we assume the format is
* key=username value=":"groupname [":"anything here is ignored]
* otherwise we now (0.8.14+) assume that the format is
* key=username value=groupname
* The first allows the password and group files to be the same
* physical DBM file; key=username value=password":"groupname[":"anything]
*
* mark@telescope.org, 22Sep95
*/
char *get_dbm_grp(request_rec *r, char *user, char *auth_dbmgrpfile) {
char *grp_data = get_dbm_pw (r, user, auth_dbmgrpfile);
char *grp_colon; char *grp_colon2;
if (grp_data == NULL) return NULL;
if ((grp_colon = strchr(grp_data, ':'))!=NULL) {
grp_colon2 = strchr(++grp_colon, ':');
if (grp_colon2) *grp_colon2='\0';
return grp_colon;
}
return grp_data;
}
int dbm_authenticate_basic_user (request_rec *r)
{
dbm_auth_config_rec *sec =
(dbm_auth_config_rec *)get_module_config (r->per_dir_config,
&dbm_auth_module);
conn_rec *c = r->connection;
char *sent_pw, *real_pw, *colon_pw;
char errstr[MAX_STRING_LEN];
int res;
if ((res = get_basic_auth_pw (r, &sent_pw)))
return res;
if(!sec->auth_dbmpwfile)
return DECLINED;
if(!(real_pw = get_dbm_pw(r, c->user, sec->auth_dbmpwfile))) {
sprintf(errstr,"DBM user %s not found", c->user);
log_reason (errstr, r->filename, r);
note_basic_auth_failure (r);
return AUTH_REQUIRED;
}
/* Password is up to first : if exists */
colon_pw = strchr(real_pw,':');
if (colon_pw) *colon_pw='\0';
/* anyone know where the prototype for crypt is? */
if(strcmp(real_pw,(char *)crypt(sent_pw,real_pw))) {
sprintf(errstr,"user %s: password mismatch",c->user);
log_reason (errstr, r->uri, r);
note_basic_auth_failure (r);
return AUTH_REQUIRED;
}
return OK;
}
/* Checking ID */
int dbm_check_auth(request_rec *r) {
dbm_auth_config_rec *sec =
(dbm_auth_config_rec *)get_module_config (r->per_dir_config,
&dbm_auth_module);
char *user = r->connection->user;
int m = r->method_number;
char errstr[MAX_STRING_LEN];
array_header *reqs_arr = requires (r);
require_line *reqs = reqs_arr ? (require_line *)reqs_arr->elts : NULL;
register int x;
char *t, *w;
if (!sec->auth_dbmgrpfile) return DECLINED;
if (!reqs_arr) return DECLINED;
for(x=0; x < reqs_arr->nelts; x++) {
if (! (reqs[x].method_mask & (1 << m))) continue;
t = reqs[x].requirement;
w = getword(r->pool, &t, ' ');
if(!strcmp(w,"group") && sec->auth_dbmgrpfile) {
char *orig_groups,*groups,*v;
if (!(groups = get_dbm_grp(r, user, sec->auth_dbmgrpfile))) {
sprintf(errstr,"user %s not in DBM group file %s",
user, sec->auth_dbmgrpfile);
log_reason (errstr, r->filename, r);
note_basic_auth_failure (r);
return AUTH_REQUIRED;
}
orig_groups = groups;
while(t[0]) {
w = getword(r->pool, &t, ' ');
groups = orig_groups;
while(groups[0]) {
v = getword(r->pool, &groups,',');
if(!strcmp(v,w))
return OK;
}
}
sprintf(errstr,"user %s not in right group",user);
log_reason (errstr, r->filename, r);
note_basic_auth_failure(r);
return AUTH_REQUIRED;
}
}
return DECLINED;
}
module dbm_auth_module = {
STANDARD_MODULE_STUFF,
NULL, /* initializer */
create_dbm_auth_dir_config, /* dir config creater */
NULL, /* dir merger --- default is to override */
NULL, /* server config */
NULL, /* merge server config */
dbm_auth_cmds, /* command table */
NULL, /* handlers */
NULL, /* filename translation */
dbm_authenticate_basic_user, /* check_user_id */
dbm_check_auth, /* check auth */
NULL, /* check access */
NULL, /* type_checker */
NULL, /* fixups */
NULL /* logger */
};