1911106dfSjm199354 /*
2911106dfSjm199354 * CDDL HEADER START
3911106dfSjm199354 *
4911106dfSjm199354 * The contents of this file are subject to the terms of the
5911106dfSjm199354 * Common Development and Distribution License (the "License").
6911106dfSjm199354 * You may not use this file except in compliance with the License.
7911106dfSjm199354 *
8911106dfSjm199354 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9911106dfSjm199354 * or http://www.opensolaris.org/os/licensing.
10911106dfSjm199354 * See the License for the specific language governing permissions
11911106dfSjm199354 * and limitations under the License.
12911106dfSjm199354 *
13911106dfSjm199354 * When distributing Covered Code, include this CDDL HEADER in each
14911106dfSjm199354 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15911106dfSjm199354 * If applicable, add the following below this CDDL HEADER, with the
16911106dfSjm199354 * fields enclosed by brackets "[]" replaced with your own identifying
17911106dfSjm199354 * information: Portions Copyright [yyyy] [name of copyright owner]
18911106dfSjm199354 *
19911106dfSjm199354 * CDDL HEADER END
20911106dfSjm199354 */
21911106dfSjm199354 /*
22*bfc848c6Sjm199354 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
23911106dfSjm199354 * Use is subject to license terms.
24911106dfSjm199354 */
25911106dfSjm199354
26911106dfSjm199354 /*
27911106dfSjm199354 * Implementation of the vscan statistics interface
28911106dfSjm199354 */
29911106dfSjm199354
30911106dfSjm199354 #include <stdio.h>
31911106dfSjm199354 #include <stdlib.h>
32911106dfSjm199354 #include <unistd.h>
33911106dfSjm199354 #include <string.h>
34911106dfSjm199354 #include <syslog.h>
35911106dfSjm199354 #include <pthread.h>
36911106dfSjm199354 #include <door.h>
37911106dfSjm199354 #include <pwd.h>
38911106dfSjm199354 #include <auth_attr.h>
39911106dfSjm199354 #include <secdb.h>
40911106dfSjm199354 #include <sys/stat.h>
41911106dfSjm199354 #include <fcntl.h>
42911106dfSjm199354 #include "vs_incl.h"
43911106dfSjm199354
44911106dfSjm199354
45911106dfSjm199354 /* local data */
46911106dfSjm199354 static vs_stats_t vscan_stats;
47911106dfSjm199354 static int vs_stats_door_cookie;
48911106dfSjm199354 static int vs_stats_door_fd = -1;
49911106dfSjm199354 static pthread_mutex_t vs_stats_mutex = PTHREAD_MUTEX_INITIALIZER;
50911106dfSjm199354
51911106dfSjm199354
52911106dfSjm199354 /* function prototype */
53911106dfSjm199354 static int vs_stats_check_auth(void);
54*bfc848c6Sjm199354 static void vs_stats_reset(void);
55911106dfSjm199354 static void vs_stats_door_call(void *, char *, size_t, door_desc_t *, uint_t);
56911106dfSjm199354
57911106dfSjm199354
58911106dfSjm199354 /*
59911106dfSjm199354 * vs_stats_init
60911106dfSjm199354 *
61911106dfSjm199354 * Invoked on daemon load and unload
62911106dfSjm199354 */
63911106dfSjm199354 int
vs_stats_init(void)64911106dfSjm199354 vs_stats_init(void)
65911106dfSjm199354 {
66911106dfSjm199354 (void) pthread_mutex_lock(&vs_stats_mutex);
67911106dfSjm199354
68911106dfSjm199354 (void) memset(&vscan_stats, 0, sizeof (vs_stats_t));
69911106dfSjm199354
70911106dfSjm199354 /* door initialization */
71911106dfSjm199354 if ((vs_stats_door_fd = door_create(vs_stats_door_call,
72911106dfSjm199354 &vs_stats_door_cookie, (DOOR_UNREF | DOOR_REFUSE_DESC))) < 0) {
73911106dfSjm199354 vs_stats_door_fd = -1;
74911106dfSjm199354 } else {
75911106dfSjm199354 (void) fdetach(VS_STATS_DOOR_NAME);
76911106dfSjm199354 if (fattach(vs_stats_door_fd, VS_STATS_DOOR_NAME) < 0) {
77911106dfSjm199354 (void) door_revoke(vs_stats_door_fd);
78911106dfSjm199354 vs_stats_door_fd = -1;
79911106dfSjm199354 }
80911106dfSjm199354 }
81911106dfSjm199354
82911106dfSjm199354 (void) pthread_mutex_unlock(&vs_stats_mutex);
83911106dfSjm199354
84911106dfSjm199354 return ((vs_stats_door_fd == -1) ? -1 : 0);
85911106dfSjm199354 }
86911106dfSjm199354
87911106dfSjm199354
88911106dfSjm199354 /*
89911106dfSjm199354 * vs_stats_fini
90911106dfSjm199354 *
91911106dfSjm199354 * Invoked on daemon unload
92911106dfSjm199354 */
93911106dfSjm199354 void
vs_stats_fini(void)94911106dfSjm199354 vs_stats_fini(void)
95911106dfSjm199354 {
96911106dfSjm199354 (void) pthread_mutex_lock(&vs_stats_mutex);
97911106dfSjm199354
98911106dfSjm199354 /* door termination */
99911106dfSjm199354 if (vs_stats_door_fd != -1)
100911106dfSjm199354 (void) door_revoke(vs_stats_door_fd);
101911106dfSjm199354 vs_stats_door_fd = -1;
102911106dfSjm199354
103911106dfSjm199354 (void) fdetach(VS_STATS_DOOR_NAME);
104911106dfSjm199354 (void) unlink(VS_STATS_DOOR_NAME);
105911106dfSjm199354
106911106dfSjm199354 (void) pthread_mutex_unlock(&vs_stats_mutex);
107911106dfSjm199354 }
108911106dfSjm199354
109911106dfSjm199354
110911106dfSjm199354 /*
111911106dfSjm199354 * vs_stats_check_auth
112911106dfSjm199354 *
113911106dfSjm199354 * Returns: 0 caller authorized to reset stats
114911106dfSjm199354 * -1 caller not authorized to reset stats
115911106dfSjm199354 */
116911106dfSjm199354 static int
vs_stats_check_auth()117911106dfSjm199354 vs_stats_check_auth()
118911106dfSjm199354 {
119911106dfSjm199354 ucred_t *uc = NULL;
120911106dfSjm199354 uid_t uid;
121911106dfSjm199354 struct passwd *pw;
122911106dfSjm199354
123911106dfSjm199354 if (door_ucred(&uc) != 0)
124911106dfSjm199354 return (-1);
125911106dfSjm199354
126911106dfSjm199354 if (((uid = ucred_getsuid(uc)) == (uid_t)-1) ||
127911106dfSjm199354 ((pw = getpwuid(uid)) == NULL) ||
128911106dfSjm199354 (chkauthattr(VS_VALUE_AUTH, pw->pw_name) != 1)) {
129911106dfSjm199354 ucred_free(uc);
130911106dfSjm199354 return (-1);
131911106dfSjm199354 }
132911106dfSjm199354
133911106dfSjm199354 ucred_free(uc);
134911106dfSjm199354 return (0);
135911106dfSjm199354 }
136911106dfSjm199354
137911106dfSjm199354
138911106dfSjm199354 /*
139911106dfSjm199354 * vs_stats_door_call
140911106dfSjm199354 */
141911106dfSjm199354 /* ARGSUSED */
142911106dfSjm199354 static void
vs_stats_door_call(void * cookie,char * ptr,size_t size,door_desc_t * dp,uint_t n_desc)143911106dfSjm199354 vs_stats_door_call(void *cookie, char *ptr, size_t size, door_desc_t *dp,
144911106dfSjm199354 uint_t n_desc)
145911106dfSjm199354 {
146*bfc848c6Sjm199354 /* LINTED E_BAD_PTR_CAST_ALIGN */
147911106dfSjm199354 vs_stats_req_t *req = (vs_stats_req_t *)ptr;
148*bfc848c6Sjm199354 vs_stats_rsp_t rsp;
149911106dfSjm199354
150*bfc848c6Sjm199354 if ((cookie != &vs_stats_door_cookie) ||
151*bfc848c6Sjm199354 (ptr == NULL) ||
152*bfc848c6Sjm199354 (size != sizeof (vs_stats_req_t)) ||
153*bfc848c6Sjm199354 (req->vsr_magic != VS_STATS_DOOR_MAGIC)) {
154*bfc848c6Sjm199354 return;
155*bfc848c6Sjm199354 }
156*bfc848c6Sjm199354
157*bfc848c6Sjm199354 rsp.vsr_magic = VS_STATS_DOOR_MAGIC;
158*bfc848c6Sjm199354
159*bfc848c6Sjm199354 switch (req->vsr_id) {
160911106dfSjm199354 case VS_STATS_GET:
161911106dfSjm199354 (void) pthread_mutex_lock(&vs_stats_mutex);
162*bfc848c6Sjm199354 rsp.vsr_stats = vscan_stats;
163911106dfSjm199354 (void) pthread_mutex_unlock(&vs_stats_mutex);
164*bfc848c6Sjm199354 (void) door_return((char *)&rsp, sizeof (vs_stats_rsp_t),
165*bfc848c6Sjm199354 NULL, 0);
166911106dfSjm199354 break;
167911106dfSjm199354
168911106dfSjm199354 case VS_STATS_RESET:
169*bfc848c6Sjm199354 vs_stats_reset();
170911106dfSjm199354 (void) door_return(NULL, 0, NULL, 0);
171911106dfSjm199354 break;
172911106dfSjm199354
173911106dfSjm199354 default:
174*bfc848c6Sjm199354 return;
175911106dfSjm199354 }
176911106dfSjm199354 }
177911106dfSjm199354
178911106dfSjm199354
179911106dfSjm199354 /*
180*bfc848c6Sjm199354 * vs_stats_reset
181*bfc848c6Sjm199354 *
182*bfc848c6Sjm199354 * Reset totals and per-engine statistics to 0
183*bfc848c6Sjm199354 */
184*bfc848c6Sjm199354 static void
vs_stats_reset()185*bfc848c6Sjm199354 vs_stats_reset()
186*bfc848c6Sjm199354 {
187*bfc848c6Sjm199354 int i;
188*bfc848c6Sjm199354
189*bfc848c6Sjm199354 if (vs_stats_check_auth() != 0)
190*bfc848c6Sjm199354 return;
191*bfc848c6Sjm199354
192*bfc848c6Sjm199354 (void) pthread_mutex_lock(&vs_stats_mutex);
193*bfc848c6Sjm199354
194*bfc848c6Sjm199354 vscan_stats.vss_scanned = 0;
195*bfc848c6Sjm199354 vscan_stats.vss_infected = 0;
196*bfc848c6Sjm199354 vscan_stats.vss_cleaned = 0;
197*bfc848c6Sjm199354 vscan_stats.vss_failed = 0;
198*bfc848c6Sjm199354
199*bfc848c6Sjm199354 for (i = 0; i < VS_SE_MAX; i++)
200*bfc848c6Sjm199354 vscan_stats.vss_eng[i].vss_errors = 0;
201*bfc848c6Sjm199354
202*bfc848c6Sjm199354 (void) pthread_mutex_unlock(&vs_stats_mutex);
203*bfc848c6Sjm199354 }
204*bfc848c6Sjm199354
205*bfc848c6Sjm199354
206*bfc848c6Sjm199354 /*
207911106dfSjm199354 * vs_stats_set
208911106dfSjm199354 *
209911106dfSjm199354 * Update scan request stats
210911106dfSjm199354 */
211911106dfSjm199354 void
vs_stats_set(int retval)212911106dfSjm199354 vs_stats_set(int retval)
213911106dfSjm199354 {
214911106dfSjm199354 (void) pthread_mutex_lock(&vs_stats_mutex);
215911106dfSjm199354
216911106dfSjm199354 switch (retval) {
217911106dfSjm199354 case VS_RESULT_CLEAN:
218911106dfSjm199354 vscan_stats.vss_scanned++;
219911106dfSjm199354 break;
220911106dfSjm199354 case VS_RESULT_CLEANED:
221911106dfSjm199354 vscan_stats.vss_scanned++;
222911106dfSjm199354 vscan_stats.vss_infected++;
223911106dfSjm199354 vscan_stats.vss_cleaned++;
224911106dfSjm199354 break;
225911106dfSjm199354 case VS_RESULT_FORBIDDEN:
226911106dfSjm199354 vscan_stats.vss_scanned++;
227911106dfSjm199354 vscan_stats.vss_infected++;
228911106dfSjm199354 break;
229911106dfSjm199354 case VS_RESULT_SE_ERROR:
230911106dfSjm199354 case VS_RESULT_ERROR:
231911106dfSjm199354 default:
232911106dfSjm199354 vscan_stats.vss_failed++;
233911106dfSjm199354 break;
234911106dfSjm199354 }
235911106dfSjm199354
236911106dfSjm199354 (void) pthread_mutex_unlock(&vs_stats_mutex);
237911106dfSjm199354 }
238911106dfSjm199354
239911106dfSjm199354
240911106dfSjm199354 /*
241911106dfSjm199354 * vs_stats_eng_err
242911106dfSjm199354 *
243911106dfSjm199354 * Increment the error count stat for eng
244911106dfSjm199354 */
245911106dfSjm199354 void
vs_stats_eng_err(char * engid)246911106dfSjm199354 vs_stats_eng_err(char *engid)
247911106dfSjm199354 {
248911106dfSjm199354 int i;
249911106dfSjm199354
250911106dfSjm199354 (void) pthread_mutex_lock(&vs_stats_mutex);
251911106dfSjm199354
252911106dfSjm199354 for (i = 0; i < VS_SE_MAX; i++) {
253911106dfSjm199354 if (*(vscan_stats.vss_eng[i].vss_engid) == 0)
254911106dfSjm199354 break;
255911106dfSjm199354
256911106dfSjm199354 if (strcmp(vscan_stats.vss_eng[i].vss_engid, engid) == 0) {
257911106dfSjm199354 ++(vscan_stats.vss_eng[i].vss_errors);
258911106dfSjm199354 break;
259911106dfSjm199354 }
260911106dfSjm199354 }
261911106dfSjm199354
262911106dfSjm199354 (void) pthread_mutex_unlock(&vs_stats_mutex);
263911106dfSjm199354 }
264911106dfSjm199354
265911106dfSjm199354
266911106dfSjm199354 /*
267911106dfSjm199354 * vs_stats_config
268911106dfSjm199354 */
269911106dfSjm199354 void
vs_stats_config(vs_props_all_t * config)270911106dfSjm199354 vs_stats_config(vs_props_all_t *config)
271911106dfSjm199354 {
272911106dfSjm199354 int i, j;
273911106dfSjm199354 char *engid, *previd;
274911106dfSjm199354 vs_stats_t prev;
275911106dfSjm199354
276911106dfSjm199354 (void) pthread_mutex_lock(&vs_stats_mutex);
277911106dfSjm199354
278911106dfSjm199354 (void) memcpy(&prev, &vscan_stats, sizeof (vs_stats_t));
279911106dfSjm199354 (void) memset(&vscan_stats.vss_eng, 0, sizeof (vscan_stats.vss_eng));
280911106dfSjm199354
281911106dfSjm199354 for (i = 0; i < VS_SE_MAX; i++) {
282911106dfSjm199354 engid = config->va_se[i].vep_engid;
283911106dfSjm199354 if (*engid == 0)
284911106dfSjm199354 break;
285911106dfSjm199354
286911106dfSjm199354 (void) strlcpy(vscan_stats.vss_eng[i].vss_engid, engid,
287911106dfSjm199354 VS_SE_NAME_LEN);
288911106dfSjm199354
289911106dfSjm199354 /* find previous error count for engid */
290911106dfSjm199354 for (j = 0; j < VS_SE_MAX; j++) {
291911106dfSjm199354 previd = prev.vss_eng[j].vss_engid;
292911106dfSjm199354 if (strcmp(previd, engid) == 0) {
293911106dfSjm199354 vscan_stats.vss_eng[i].vss_errors =
294911106dfSjm199354 prev.vss_eng[j].vss_errors;
295911106dfSjm199354 break;
296911106dfSjm199354 }
297911106dfSjm199354 }
298911106dfSjm199354 }
299911106dfSjm199354
300911106dfSjm199354 (void) pthread_mutex_unlock(&vs_stats_mutex);
301911106dfSjm199354 }
302