| /* ==================================================================== |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2000 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. |
| */ |
| |
| /* |
| * mod_auth_db: authentication |
| * |
| * Original work by Rob McCool & Brian Behlendorf. |
| * |
| * Adapted to Apache by rst (mod_auth_dbm) |
| * |
| * Adapted for Berkeley DB by Andrew Cohen |
| * |
| * apache 2 port by Brian Martin |
| * |
| * mod_auth_db was based on mod_auth_dbm. |
| * |
| * Warning, this is not a drop in replacement for mod_auth_dbm, |
| * for people wanting to switch from dbm to Berkeley DB. |
| * It requires the use of AuthDBUserFile and AuthDBGroupFile |
| * instead of AuthDBMUserFile AuthDBMGroupFile |
| * |
| * Also, in the configuration file you need to specify |
| * auth_db_module rather than auth_dbm_module |
| * |
| * On some BSD systems (e.g. FreeBSD and NetBSD) dbm is automatically |
| * mapped to Berkeley DB. You can use either mod_auth_dbm or |
| * mod_auth_db. The latter makes it more obvious that it's Berkeley. |
| * On other platforms where you want to use the DB library you |
| * usually have to install it first. See http://www.sleepycat.com/ |
| * for the distribution. The interface this module uses is the |
| * one from DB version 1.85 and 1.86, but DB version 2.x |
| * can also be used when compatibility mode is enabled. |
| * |
| * 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 "ap_config.h" |
| #include "httpd.h" |
| #include "http_config.h" |
| #include "http_core.h" |
| #include "http_log.h" |
| #include "http_protocol.h" |
| #ifdef HAVE_DB_H |
| #include <db.h> |
| #endif |
| |
| #if defined(DB_VERSION_MAJOR) && (DB_VERSION_MAJOR == 3) |
| #define DB_VER 3 |
| #elif defined(DB_VERSION_MAJOR) && (DB_VERSION_MAJOR == 2) |
| #define DB_VER 2 |
| #else |
| #define DB_VER 1 |
| #endif |
| |
| typedef struct { |
| |
| char *auth_dbpwfile; |
| char *auth_dbgrpfile; |
| int auth_dbauthoritative; |
| } db_auth_config_rec; |
| |
| static void *create_db_auth_dir_config(ap_pool_t *p, char *d) |
| { |
| db_auth_config_rec *sec |
| = (db_auth_config_rec *) ap_pcalloc(p, sizeof(db_auth_config_rec)); |
| sec->auth_dbpwfile = NULL; |
| sec->auth_dbgrpfile = NULL; |
| sec->auth_dbauthoritative = 1; /* fortress is secure by default */ |
| return sec; |
| } |
| |
| static const char *set_db_slot(cmd_parms *cmd, void *offset, char *f, char *t) |
| { |
| if (!t || strcmp(t, "db")) |
| return DECLINE_CMD; |
| |
| return ap_set_file_slot(cmd, offset, f); |
| } |
| |
| static const command_rec db_auth_cmds[] = |
| { |
| {"AuthDBUserFile", ap_set_file_slot, |
| (void *) XtOffsetOf(db_auth_config_rec, auth_dbpwfile), |
| OR_AUTHCFG, TAKE1, NULL}, |
| {"AuthDBGroupFile", ap_set_file_slot, |
| (void *) XtOffsetOf(db_auth_config_rec, auth_dbgrpfile), |
| OR_AUTHCFG, TAKE1, NULL}, |
| {"AuthUserFile", set_db_slot, |
| (void *) XtOffsetOf(db_auth_config_rec, auth_dbpwfile), |
| OR_AUTHCFG, TAKE12, NULL}, |
| {"AuthGroupFile", set_db_slot, |
| (void *) XtOffsetOf(db_auth_config_rec, auth_dbgrpfile), |
| OR_AUTHCFG, TAKE12, NULL}, |
| {"AuthDBAuthoritative", ap_set_flag_slot, |
| (void *) XtOffsetOf(db_auth_config_rec, auth_dbauthoritative), |
| OR_AUTHCFG, FLAG, |
| "Set to 'no' to allow access control to be passed along to lower modules if the userID is not known to this module"}, |
| {NULL} |
| }; |
| |
| module auth_db_module; |
| |
| static char *get_db_pw(request_rec *r, char *user, const char *auth_dbpwfile) |
| { |
| DB *f; |
| DBT d, q; |
| char *pw = NULL; |
| int retval; |
| |
| memset(&d, 0, sizeof(d)); |
| memset(&q, 0, sizeof(q)); |
| |
| q.data = user; |
| q.size = strlen(q.data); |
| |
| #if DB_VER == 3 |
| db_create(&f, NULL, 0); |
| if ((retval = f->open(f, auth_dbpwfile, NULL, DB_HASH, DB_RDONLY, 0664)) != 0) { |
| char * reason; |
| switch(retval) { |
| case DB_OLD_VERSION: |
| reason = "Old database version. Upgrade to version 3"; |
| break; |
| |
| case EEXIST: |
| reason = "DB_CREATE and DB_EXCL were specified and the file exists"; |
| break; |
| |
| case EINVAL: |
| reason = "An invalid flag value or parameter was specified"; |
| break; |
| |
| case ENOENT: |
| reason = "A non-existent re_source file was specified"; |
| break; |
| |
| default: |
| reason = "And I don't know why"; |
| break; |
| } |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r, |
| "could not open db auth file %s: %s", |
| auth_dbpwfile, reason); |
| return NULL; |
| } |
| #elif DB_VER == 2 |
| if ((retval = db_open(auth_dbpwfile, DB_HASH, DB_RDONLY, 0664, NULL, NULL, &f)) != 0) { |
| char * reason; |
| switch(retval) { |
| |
| case EEXIST: |
| reason = "DB_CREATE and DB_EXCL were specified and the file exists."; |
| break; |
| |
| case EINVAL: |
| reason = "An invalid flag value or parameter was specified"; |
| break; |
| |
| case ENOENT: |
| reason = "A non-existent re_source file was specified"; |
| break; |
| |
| default: |
| reason = "And I don't know why"; |
| break; |
| } |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r, |
| "could not open db auth file %s: %s", |
| auth_dbpwfile, reason); |
| return NULL; |
| } |
| #else |
| if (!(f = dbopen(auth_dbpwfile, O_RDONLY, 0664, DB_HASH, NULL))) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r, |
| "could not open db auth file: %s", auth_dbpwfile); |
| return NULL; |
| } |
| #endif |
| |
| #if DB_VER == 3 || DB_VER == 2 |
| if (!((f->get) (f, NULL, &q, &d, 0))) { |
| #else |
| if (!((f->get) (f, &q, &d, 0))) { |
| #endif |
| pw = ap_palloc(r->pool, d.size + 1); |
| strncpy(pw, d.data, d.size); |
| pw[d.size] = '\0'; /* Terminate the string */ |
| } |
| |
| #if DB_VER == 3 || DB_VER == 2 |
| (f->close) (f, 0); |
| #else |
| (f->close) (f); |
| #endif |
| 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 DB file; key=username value=password":"groupname[":"anything] |
| * |
| * mark@telescope.org, 22Sep95 |
| */ |
| |
| static char *get_db_grp(request_rec *r, char *user, const char *auth_dbgrpfile) |
| { |
| char *grp_data = get_db_pw(r, user, auth_dbgrpfile); |
| 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; |
| } |
| |
| static int db_authenticate_basic_user(request_rec *r) |
| { |
| db_auth_config_rec *sec = |
| (db_auth_config_rec *) ap_get_module_config(r->per_dir_config, |
| &auth_db_module); |
| const char *sent_pw; |
| char *real_pw, *colon_pw; |
| ap_status_t invalid_pw; |
| int res; |
| |
| if ((res = ap_get_basic_auth_pw(r, &sent_pw))) |
| return res; |
| |
| if (!sec->auth_dbpwfile) { |
| ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r, |
| "DB file %s not found", sec->auth_dbpwfile); |
| return DECLINED; |
| } |
| |
| if (!(real_pw = get_db_pw(r, r->user, sec->auth_dbpwfile))) { |
| if (!(sec->auth_dbauthoritative)) |
| return DECLINED; |
| ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r, |
| "DB user %s not found: %s", r->user, r->filename); |
| ap_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'; |
| } |
| |
| invalid_pw = ap_validate_password(sent_pw, real_pw); |
| |
| if (invalid_pw != APR_SUCCESS) { |
| #ifdef HAVE_APR_STRERROR |
| ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r, |
| "DB user %s: authentication failure for \"%s\": %s", |
| r->user, r->uri, apr_strerror(invalid_pw)); |
| #else |
| ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r, |
| "DB user %s: authentication failure for \"%s\": %d", |
| r->user, r->uri, "error number", |
| invalid_pw); |
| #endif |
| ap_note_basic_auth_failure(r); |
| return AUTH_REQUIRED; |
| } |
| return OK; |
| } |
| |
| /* Checking ID */ |
| |
| static int db_check_auth(request_rec *r) |
| { |
| db_auth_config_rec *sec = |
| (db_auth_config_rec *) ap_get_module_config(r->per_dir_config, |
| &auth_db_module); |
| char *user = r->user; |
| int m = r->method_number; |
| |
| const ap_array_header_t *reqs_arr = ap_requires(r); |
| require_line *reqs = reqs_arr ? (require_line *) reqs_arr->elts : NULL; |
| |
| register int x; |
| const char *t; |
| char *w; |
| |
| if (!sec->auth_dbgrpfile) |
| 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 = ap_getword_white(r->pool, &t); |
| |
| if (!strcmp(w, "group") && sec->auth_dbgrpfile) { |
| const char *orig_groups, *groups; |
| char *v; |
| |
| if (!(groups = get_db_grp(r, user, sec->auth_dbgrpfile))) { |
| if (!(sec->auth_dbauthoritative)) |
| return DECLINED; |
| ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r, |
| "user %s not in DB group file %s: %s", |
| user, sec->auth_dbgrpfile, r->filename); |
| ap_note_basic_auth_failure(r); |
| return AUTH_REQUIRED; |
| } |
| orig_groups = groups; |
| while (t[0]) { |
| w = ap_getword_white(r->pool, &t); |
| groups = orig_groups; |
| while (groups[0]) { |
| v = ap_getword(r->pool, &groups, ','); |
| if (!strcmp(v, w)) |
| return OK; |
| } |
| } |
| ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r, |
| "user %s not in right group: %s", user, r->filename); |
| ap_note_basic_auth_failure(r); |
| return AUTH_REQUIRED; |
| } |
| } |
| |
| return DECLINED; |
| } |
| |
| static void register_hooks(void) |
| { |
| ap_hook_check_user_id(db_authenticate_basic_user,NULL,NULL,HOOK_MIDDLE); |
| ap_hook_auth_checker(db_check_auth,NULL,NULL,HOOK_MIDDLE); |
| } |
| |
| module auth_db_module = |
| { |
| STANDARD20_MODULE_STUFF, |
| create_db_auth_dir_config, /* dir config creater */ |
| NULL, /* dir merger --- default is to override */ |
| NULL, /* server config */ |
| NULL, /* merge server config */ |
| db_auth_cmds, /* command ap_table_t */ |
| NULL, /* handlers */ |
| register_hooks /* register hooks */ |
| }; |
| |