1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /*
27 * Routines to handle getexec* calls in nscd
28 */
29
30 #include <string.h>
31 #include <exec_attr.h>
32 #include "cache.h"
33
34 static int execattr_compar(const void *, const void *);
35 static uint_t execattr_gethash(nss_XbyY_key_t *, int);
36 static void execattr_getlogstr(char *, char *, size_t, nss_XbyY_args_t *);
37
38 #define nam_db ctx->nsc_db[0]
39 #define id_db ctx->nsc_db[1]
40 #define nam_id_db ctx->nsc_db[2]
41 #define NSC_NAME_EXECATTR_BYNAME "execattr_byname"
42 #define NSC_NAME_EXECATTR_BYID "execattr_byid"
43 #define NSC_NAME_EXECATTR_BYNAMEID "execattr_bynameid"
44
45 void
exec_init_ctx(nsc_ctx_t * ctx)46 exec_init_ctx(nsc_ctx_t *ctx) {
47 ctx->dbname = NSS_DBNAM_EXECATTR;
48 ctx->file_name = "/etc/security/exec_attr";
49 ctx->db_count = 3;
50 nam_db = make_cache(nsc_key_other,
51 NSS_DBOP_EXECATTR_BYNAME,
52 NSC_NAME_EXECATTR_BYNAME,
53 execattr_compar,
54 execattr_getlogstr,
55 execattr_gethash, nsc_ht_default, -1);
56 id_db = make_cache(nsc_key_other,
57 NSS_DBOP_EXECATTR_BYID,
58 NSC_NAME_EXECATTR_BYID,
59 execattr_compar,
60 execattr_getlogstr,
61 execattr_gethash, nsc_ht_default, -1);
62 nam_id_db = make_cache(nsc_key_other,
63 NSS_DBOP_EXECATTR_BYNAMEID,
64 NSC_NAME_EXECATTR_BYNAMEID,
65 execattr_compar,
66 execattr_getlogstr,
67 execattr_gethash, nsc_ht_default, -1);
68 }
69
70 #define EXEC_STR_CMP(s1, s2) \
71 if ((a = s1) == NULL) \
72 a = z; \
73 if ((b = s2) == NULL) \
74 b = z; \
75 res = strcmp(a, b); \
76 if (res != 0) \
77 return (res > 0 ? 1 : -1);
78
79 static int
execattr_compar(const void * n1,const void * n2)80 execattr_compar(const void *n1, const void *n2) {
81 nsc_entry_t *e1 = (nsc_entry_t *)n1;
82 nsc_entry_t *e2 = (nsc_entry_t *)n2;
83 _priv_execattr *ep1 = (_priv_execattr *)e1->key.attrp;
84 _priv_execattr *ep2 = (_priv_execattr *)e2->key.attrp;
85 int res;
86 const char *a, *b, *z = "";
87
88 /* compare name */
89 EXEC_STR_CMP(ep1->name, ep2->name);
90
91 /* compare policy */
92 EXEC_STR_CMP(ep1->policy, ep2->policy);
93
94 /* compare type */
95 EXEC_STR_CMP(ep1->type, ep2->type);
96
97 /* compare id */
98 EXEC_STR_CMP(ep1->id, ep2->id);
99
100 /* compare search flag */
101 return (_NSC_INT_KEY_CMP(ep1->search_flag, ep2->search_flag));
102 }
103
104 static uint_t
execattr_gethash(nss_XbyY_key_t * key,int htsize)105 execattr_gethash(nss_XbyY_key_t *key, int htsize) {
106 _priv_execattr *ep = key->attrp;
107 char keys[1024];
108 int len;
109
110 len = snprintf(keys, sizeof (keys), "%s:%s:%s:%s:%d",
111 ep->name ? ep->name : "", ep->type ? ep->type : "",
112 ep->id ? ep->id : "", ep->policy ? ep->policy : "",
113 ep->search_flag);
114 return (db_gethash(keys, len, htsize));
115 }
116
117 static void
execattr_getlogstr(char * name,char * whoami,size_t len,nss_XbyY_args_t * argp)118 execattr_getlogstr(char *name, char *whoami, size_t len,
119 nss_XbyY_args_t *argp) {
120 _priv_execattr *ep = argp->key.attrp;
121
122 (void) snprintf(whoami, len,
123 "%s [name=%s:type=%s:id=%s:policy=%s:flags=%d]",
124 name, check_null(ep->name), check_null(ep->type),
125 check_null(ep->id), check_null(ep->policy),
126 ep->search_flag);
127 }
128