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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <syslog.h>
#include <string.h>
#include <cryptoutil.h>
#define CRYPTO_DEBUG_ENV "SUNW_CRYPTO_DEBUG"
static char *_cryptodebug_prefix = NULL;
static int _cryptodebug_enabled = -1; /* -1 unknown, 0 disabled, 1 enabled */
static int _cryptoerror_enabled = 1; /* 0 disabled, 1 enabled */
static boolean_t _cryptodebug_syslog = B_TRUE;
/*PRINTFLIKE1*/
void
cryptodebug(const char *fmt, ...)
{
va_list args;
char fmtbuf[BUFSIZ];
char msgbuf[BUFSIZ];
if (fmt == NULL || _cryptodebug_enabled != 1)
return;
va_start(args, fmt);
if (_cryptodebug_prefix == NULL) {
(void) vsnprintf(msgbuf, sizeof (msgbuf), fmt, args);
} else {
(void) snprintf(fmtbuf, sizeof (fmtbuf), "%s: %s",
_cryptodebug_prefix, fmt);
(void) vsnprintf(msgbuf, sizeof (msgbuf), fmtbuf, args);
}
if (_cryptodebug_syslog) {
syslog(LOG_DEBUG, msgbuf);
} else {
(void) fprintf(stderr, "%s\n", msgbuf);
}
va_end(args);
}
/*
* cryptoerror
*
* This is intended to be used both by interactive commands like cryptoadm(1m)
* digest(1) etc, and by libraries libpkcs11, libelfsign etc.
*
* A library probably wants most (all?) of its errors going to syslog but
* commands are usually happy for them to go to stderr.
*
* If a syslog priority is passed we log on that priority. Otherwise we
* use LOG_STDERR to mean use stderr instead. LOG_STDERR is defined in
* cryptoutil.h
*/
/*PRINTFLIKE2*/
void
cryptoerror(int priority, const char *fmt, ...)
{
char fmtbuf[BUFSIZ];
char msgbuf[BUFSIZ];
va_list args;
if (fmt == NULL || _cryptoerror_enabled == 0)
return;
va_start(args, fmt);
if (_cryptodebug_prefix == NULL) {
(void) vsnprintf(msgbuf, sizeof (msgbuf), fmt, args);
} else {
(void) snprintf(fmtbuf, sizeof (fmtbuf), "%s: %s",
_cryptodebug_prefix, fmt);
(void) vsnprintf(msgbuf, sizeof (msgbuf), fmtbuf, args);
}
if ((priority == LOG_STDERR) || (priority < 0)) {
(void) fprintf(stderr, "%s\n", msgbuf);
} else {
syslog(priority, msgbuf);
}
va_end(args);
}
void
cryptoerror_off()
{
_cryptoerror_enabled = 0;
}
void
cryptoerror_on()
{
_cryptoerror_enabled = 1;
}
void
cryptodebug_init(const char *prefix)
{
char *envval = NULL;
if (prefix != NULL) {
_cryptodebug_prefix = strdup(prefix);
}
if (_cryptodebug_enabled == -1) {
envval = getenv(CRYPTO_DEBUG_ENV);
/*
* If unset or it isn't one of syslog or stderr
* disable debug.
*/
if (envval == NULL || (strcmp(envval, "") == 0)) {
_cryptodebug_enabled = 0;
return;
} else if (strcmp(envval, "stderr") == 0) {
_cryptodebug_syslog = B_FALSE;
_cryptodebug_enabled = 1;
} else if (strcmp(envval, "syslog") == 0) {
_cryptodebug_syslog = B_TRUE;
_cryptodebug_enabled = 1;
}
}
openlog(_cryptodebug_prefix, LOG_PID, LOG_USER);
}
#pragma fini(_cryptodebug_fini)
static void
_cryptodebug_fini(void)
{
if (_cryptodebug_prefix != NULL)
free(_cryptodebug_prefix);
}
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