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      1 /*	$NetBSD: get_princs_s.c,v 1.2 2017/01/28 21:31:49 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997, 1998, 1999 Kungliga Tekniska Hgskolan
      5  * (Royal Institute of Technology, Stockholm, Sweden).
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  *
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  *
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * 3. Neither the name of the Institute nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include "kadm5_locl.h"
     37 
     38 __RCSID("$NetBSD: get_princs_s.c,v 1.2 2017/01/28 21:31:49 christos Exp $");
     39 
     40 struct foreach_data {
     41     const char *exp;
     42     char *exp2;
     43     char **princs;
     44     int count;
     45 };
     46 
     47 static krb5_error_code
     48 add_princ(struct foreach_data *d, char *princ)
     49 {
     50     char **tmp;
     51     tmp = realloc(d->princs, (d->count + 1) * sizeof(*tmp));
     52     if(tmp == NULL)
     53 	return ENOMEM;
     54     d->princs = tmp;
     55     d->princs[d->count++] = princ;
     56     return 0;
     57 }
     58 
     59 static krb5_error_code
     60 foreach(krb5_context context, HDB *db, hdb_entry_ex *ent, void *data)
     61 {
     62     struct foreach_data *d = data;
     63     char *princ;
     64     krb5_error_code ret;
     65     ret = krb5_unparse_name(context, ent->entry.principal, &princ);
     66     if(ret)
     67 	return ret;
     68     if(d->exp){
     69 	if(fnmatch(d->exp, princ, 0) == 0 || fnmatch(d->exp2, princ, 0) == 0)
     70 	    ret = add_princ(d, princ);
     71 	else
     72 	    free(princ);
     73     }else{
     74 	ret = add_princ(d, princ);
     75     }
     76     if(ret)
     77 	free(princ);
     78     return ret;
     79 }
     80 
     81 kadm5_ret_t
     82 kadm5_s_get_principals(void *server_handle,
     83 		       const char *expression,
     84 		       char ***princs,
     85 		       int *count)
     86 {
     87     struct foreach_data d;
     88     kadm5_server_context *context = server_handle;
     89     kadm5_ret_t ret;
     90 
     91     if (!context->keep_open) {
     92 	ret = context->db->hdb_open(context->context, context->db, O_RDONLY, 0);
     93 	if (ret) {
     94 	    krb5_warn(context->context, ret, "opening database");
     95 	    return ret;
     96 	}
     97     }
     98     d.exp = expression;
     99     {
    100 	krb5_realm r;
    101 	int aret;
    102 
    103 	krb5_get_default_realm(context->context, &r);
    104 	aret = asprintf(&d.exp2, "%s@%s", expression, r);
    105 	free(r);
    106 	if (aret == -1 || d.exp2 == NULL) {
    107 	    ret = ENOMEM;
    108             goto out;
    109 	}
    110     }
    111     d.princs = NULL;
    112     d.count = 0;
    113     ret = hdb_foreach(context->context, context->db, HDB_F_ADMIN_DATA, foreach, &d);
    114 
    115     if (ret == 0)
    116 	ret = add_princ(&d, NULL);
    117     if (ret == 0){
    118 	*princs = d.princs;
    119 	*count = d.count - 1;
    120     } else
    121 	kadm5_free_name_list(context, d.princs, &d.count);
    122     free(d.exp2);
    123  out:
    124     if (!context->keep_open)
    125 	context->db->hdb_close(context->context, context->db);
    126     return _kadm5_error_code(ret);
    127 }
    128