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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
- * 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
- *
- * Adapted to Shambhala by rst.
- */
-
- #include "httpd.h"
- #include "http_config.h"
- #include "http_core.h"
- #include "http_log.h"
- #include "http_protocol.h"
-
- typedef struct auth_config_struct {
- char *auth_pwfile;
- char *auth_grpfile;
- } auth_config_rec;
-
- void *create_auth_dir_config (pool *p, char *d)
- {
- return pcalloc (p, sizeof(auth_config_rec));
- }
-
- command_rec auth_cmds[] = {
- { "AuthUserFile", set_string_slot,
- (void*)XtOffsetOf(auth_config_rec,auth_pwfile), OR_AUTHCFG, TAKE1, NULL },
- { "AuthGroupFile", set_string_slot,
- (void*)XtOffsetOf(auth_config_rec,auth_grpfile), OR_AUTHCFG, TAKE1, NULL },
- { NULL }
- };
-
- module auth_module;
-
- char *get_pw(request_rec *r, char *user, char *auth_pwfile)
- {
- FILE *f;
- char l[MAX_STRING_LEN];
- char *rpw, *w;
-
- if(!(f=pfopen(r->pool, auth_pwfile, "r"))) {
- log_reason ("Could not open password file", auth_pwfile, r);
- return NULL;
- }
- while(!(cfg_getline(l,MAX_STRING_LEN,f))) {
- if((l[0] == '#') || (!l[0])) continue;
- rpw = l;
- w = getword(r->pool, &rpw, ':');
-
- if(!strcmp(user,w)) {
- pfclose(r->pool, f);
- return pstrdup (r->pool, rpw);
- }
- }
- pfclose(r->pool, f);
- return NULL;
- }
-
- table *groups_for_user (pool *p, char *user, char *grpfile) {
- FILE *f;
- table *grps = make_table (p, 15);
- pool *sp;
- char l[MAX_STRING_LEN];
- char *group_name, *ll, *w;
-
- if(!(f=pfopen(p, grpfile, "r")))
- return NULL;
-
- sp = make_sub_pool (p);
-
- while(!(cfg_getline(l,MAX_STRING_LEN,f))) {
- if((l[0] == '#') || (!l[0])) continue;
- ll = l;
- clear_pool (sp);
-
- group_name = getword(sp, &ll, ':');
-
- while(ll[0]) {
- w = getword_conf (sp, &ll);
- if(!strcmp(w,user)) {
- table_set (grps, group_name, "in");
- break;
- }
- }
- }
- pfclose(p, f);
- destroy_pool (sp);
- return grps;
- }
-
- /* These functions return 0 if client is OK, and proper error status
- * if not... either AUTH_REQUIRED, if we made a check, and it failed, or
- * SERVER_ERROR, if things are so totally confused that we couldn't
- * figure out how to tell if the client is authorized or not.
- *
- * If they return DECLINED, and all other modules also decline, that's
- * treated by the server core as a configuration error, logged and
- * reported as such.
- */
-
- /* Determine user ID, and check if it really is that user, for HTTP
- * basic authentication...
- */
-
- int authenticate_basic_user (request_rec *r)
- {
- auth_config_rec *sec =
- (auth_config_rec *)get_module_config (r->per_dir_config, &auth_module);
- conn_rec *c = r->connection;
- char *sent_pw, *real_pw;
- char errstr[MAX_STRING_LEN];
- int res;
-
- if ((res = get_basic_auth_pw (r, &sent_pw))) return res;
-
- if(!sec->auth_pwfile)
- return DECLINED;
-
- if (!(real_pw = get_pw(r, c->user, sec->auth_pwfile))) {
- sprintf(errstr,"user %s not found",c->user);
- log_reason (errstr, r->uri, r);
- note_basic_auth_failure (r);
- return AUTH_REQUIRED;
- }
- /* 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 check_user_access (request_rec *r) {
- auth_config_rec *sec =
- (auth_config_rec *)get_module_config (r->per_dir_config, &auth_module);
- char *user = r->connection->user;
- int m = r->method_number;
-
- register int x;
- char *t, *w;
- table *grpstatus;
- array_header *reqs_arr = requires (r);
- require_line *reqs;
-
- /* BUG FIX: tadc, 11-Nov-1995. If there is no "requires" directive,
- * then any user will do.
- */
- if (!reqs_arr)
- return (OK);
- reqs = (require_line *)reqs_arr->elts;
-
- if(sec->auth_grpfile)
- grpstatus = groups_for_user (r->pool, user, sec->auth_grpfile);
- else
- grpstatus = NULL;
-
- 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,"valid-user"))
- return OK;
- if(!strcmp(w,"user")) {
- while(t[0]) {
- w = getword_conf (r->pool, &t);
- if(!strcmp(user,w))
- return OK;
- }
- }
- else if(!strcmp(w,"group")) {
- if(!grpstatus)
- return DECLINED; /* DBM group? Something else? */
-
- while(t[0]) {
- w = getword_conf(r->pool, &t);
- if(table_get (grpstatus, w))
- return OK;
- }
- }
- }
-
- note_basic_auth_failure (r);
- return AUTH_REQUIRED;
- }
-
- module auth_module = {
- STANDARD_MODULE_STUFF,
- NULL, /* initializer */
- create_auth_dir_config, /* dir config creater */
- NULL, /* dir merger --- default is to override */
- NULL, /* server config */
- NULL, /* merge server config */
- auth_cmds, /* command table */
- NULL, /* handlers */
- NULL, /* filename translation */
- authenticate_basic_user, /* check_user_id */
- check_user_access, /* check auth */
- NULL, /* check access */
- NULL, /* type_checker */
- NULL, /* fixups */
- NULL /* logger */
- };
-