610 lines
15 KiB
C
610 lines
15 KiB
C
/*
|
|
* Copyright 2001 The Aerospace Corporation. 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 name of The Aerospace Corporation may not be used to endorse or
|
|
* promote products derived from this software.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AEROSPACE CORPORATION ``AS IS'' AND
|
|
* ANY EXPRESS 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 AEROSPACE CORPORATION 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*-
|
|
* Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
|
|
* NASA Ames Research Center.
|
|
*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS 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 FOUNDATION OR 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.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/time.h>
|
|
|
|
#include <net/ethernet.h>
|
|
#include <net/if.h>
|
|
#include <net/if_dl.h>
|
|
#include <net/if_types.h>
|
|
#include <net/route.h>
|
|
#include <net80211/ieee80211.h>
|
|
#include <net80211/ieee80211_crypto.h>
|
|
#include <net80211/ieee80211_ioctl.h>
|
|
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "ifconfig.h"
|
|
|
|
static void set80211(int s, int type, int val, int len, u_int8_t *data);
|
|
static const char *get_string(const char *val, const char *sep,
|
|
u_int8_t *buf, int *lenp);
|
|
static void print_string(const u_int8_t *buf, int len);
|
|
|
|
void
|
|
set80211ssid(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
int ssid;
|
|
int len;
|
|
u_int8_t data[33];
|
|
|
|
ssid = 0;
|
|
len = strlen(val);
|
|
if (len > 2 && isdigit(val[0]) && val[1] == ':') {
|
|
ssid = atoi(val)-1;
|
|
val += 2;
|
|
}
|
|
|
|
bzero(data, sizeof(data));
|
|
len = sizeof(data);
|
|
get_string(val, NULL, data, &len);
|
|
|
|
set80211(s, IEEE80211_IOC_SSID, ssid, len, data);
|
|
}
|
|
|
|
void
|
|
set80211stationname(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
int len;
|
|
u_int8_t data[33];
|
|
|
|
bzero(data, sizeof(data));
|
|
len = sizeof(data);
|
|
get_string(val, NULL, data, &len);
|
|
|
|
set80211(s, IEEE80211_IOC_STATIONNAME, 0, len, data);
|
|
}
|
|
|
|
void
|
|
set80211channel(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
if (strcmp(val, "-") == 0)
|
|
set80211(s, IEEE80211_IOC_CHANNEL, IEEE80211_CHAN_ANY, 0, NULL);
|
|
else
|
|
set80211(s, IEEE80211_IOC_CHANNEL, atoi(val), 0, NULL);
|
|
}
|
|
|
|
void
|
|
set80211authmode(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
int mode;
|
|
|
|
if (strcasecmp(val, "none") == 0) {
|
|
mode = IEEE80211_AUTH_NONE;
|
|
} else if (strcasecmp(val, "open") == 0) {
|
|
mode = IEEE80211_AUTH_OPEN;
|
|
} else if (strcasecmp(val, "shared") == 0) {
|
|
mode = IEEE80211_AUTH_SHARED;
|
|
} else {
|
|
err(1, "unknown authmode");
|
|
}
|
|
|
|
set80211(s, IEEE80211_IOC_AUTHMODE, mode, 0, NULL);
|
|
}
|
|
|
|
void
|
|
set80211powersavemode(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
int mode;
|
|
|
|
if (strcasecmp(val, "off") == 0) {
|
|
mode = IEEE80211_POWERSAVE_OFF;
|
|
} else if (strcasecmp(val, "on") == 0) {
|
|
mode = IEEE80211_POWERSAVE_ON;
|
|
} else if (strcasecmp(val, "cam") == 0) {
|
|
mode = IEEE80211_POWERSAVE_CAM;
|
|
} else if (strcasecmp(val, "psp") == 0) {
|
|
mode = IEEE80211_POWERSAVE_PSP;
|
|
} else if (strcasecmp(val, "psp-cam") == 0) {
|
|
mode = IEEE80211_POWERSAVE_PSP_CAM;
|
|
} else {
|
|
err(1, "unknown powersavemode");
|
|
}
|
|
|
|
set80211(s, IEEE80211_IOC_POWERSAVE, mode, 0, NULL);
|
|
}
|
|
|
|
void
|
|
set80211powersave(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
if (d == 0)
|
|
set80211(s, IEEE80211_IOC_POWERSAVE, IEEE80211_POWERSAVE_OFF,
|
|
0, NULL);
|
|
else
|
|
set80211(s, IEEE80211_IOC_POWERSAVE, IEEE80211_POWERSAVE_ON,
|
|
0, NULL);
|
|
}
|
|
|
|
void
|
|
set80211powersavesleep(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
set80211(s, IEEE80211_IOC_POWERSAVESLEEP, atoi(val), 0, NULL);
|
|
}
|
|
|
|
void
|
|
set80211wepmode(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
int mode;
|
|
|
|
if (strcasecmp(val, "off") == 0) {
|
|
mode = IEEE80211_WEP_OFF;
|
|
} else if (strcasecmp(val, "on") == 0) {
|
|
mode = IEEE80211_WEP_ON;
|
|
} else if (strcasecmp(val, "mixed") == 0) {
|
|
mode = IEEE80211_WEP_MIXED;
|
|
} else {
|
|
err(1, "unknown wep mode");
|
|
}
|
|
|
|
set80211(s, IEEE80211_IOC_WEP, mode, 0, NULL);
|
|
}
|
|
|
|
void
|
|
set80211wep(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
set80211(s, IEEE80211_IOC_WEP, d, 0, NULL);
|
|
}
|
|
|
|
void
|
|
set80211weptxkey(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
set80211(s, IEEE80211_IOC_WEPTXKEY, atoi(val)-1, 0, NULL);
|
|
}
|
|
|
|
void
|
|
set80211wepkey(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
int key = 0;
|
|
int len;
|
|
u_int8_t data[IEEE80211_KEYBUF_SIZE];
|
|
|
|
if (isdigit(val[0]) && val[1] == ':') {
|
|
key = atoi(val)-1;
|
|
val += 2;
|
|
}
|
|
|
|
bzero(data, sizeof(data));
|
|
len = sizeof(data);
|
|
get_string(val, NULL, data, &len);
|
|
|
|
set80211(s, IEEE80211_IOC_WEPKEY, key, len, data);
|
|
}
|
|
|
|
/*
|
|
* This function is purly a NetBSD compatability interface. The NetBSD
|
|
* iterface is too inflexable, but it's there so we'll support it since
|
|
* it's not all that hard.
|
|
*/
|
|
void
|
|
set80211nwkey(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
int txkey;
|
|
int i, len;
|
|
u_int8_t data[IEEE80211_KEYBUF_SIZE];
|
|
|
|
set80211(s, IEEE80211_IOC_WEP, IEEE80211_WEP_ON, 0, NULL);
|
|
|
|
if (isdigit(val[0]) && val[1] == ':') {
|
|
txkey = val[0]-'0'-1;
|
|
val += 2;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
bzero(data, sizeof(data));
|
|
len = sizeof(data);
|
|
val = get_string(val, ",", data, &len);
|
|
|
|
set80211(s, IEEE80211_IOC_WEPKEY, i, len, data);
|
|
}
|
|
} else {
|
|
bzero(data, sizeof(data));
|
|
len = sizeof(data);
|
|
get_string(val, NULL, data, &len);
|
|
txkey = 0;
|
|
|
|
set80211(s, IEEE80211_IOC_WEPKEY, 0, len, data);
|
|
|
|
bzero(data, sizeof(data));
|
|
for (i = 1; i < 4; i++)
|
|
set80211(s, IEEE80211_IOC_WEPKEY, i, 0, data);
|
|
}
|
|
|
|
set80211(s, IEEE80211_IOC_WEPTXKEY, txkey, 0, NULL);
|
|
}
|
|
|
|
void
|
|
set80211rtsthreshold(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
set80211(s, IEEE80211_IOC_RTSTHRESHOLD, atoi(val), 0, NULL);
|
|
}
|
|
|
|
void
|
|
set80211protmode(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
int mode;
|
|
|
|
if (strcasecmp(val, "off") == 0) {
|
|
mode = IEEE80211_PROTMODE_OFF;
|
|
} else if (strcasecmp(val, "cts") == 0) {
|
|
mode = IEEE80211_PROTMODE_CTS;
|
|
} else if (strcasecmp(val, "rtscts") == 0) {
|
|
mode = IEEE80211_PROTMODE_RTSCTS;
|
|
} else {
|
|
err(1, "unknown protection mode");
|
|
}
|
|
|
|
set80211(s, IEEE80211_IOC_PROTMODE, mode, 0, NULL);
|
|
}
|
|
|
|
void
|
|
set80211txpower(const char *val, int d, int s, const struct afswtch *rafp)
|
|
{
|
|
set80211(s, IEEE80211_IOC_TXPOWER, atoi(val), 0, NULL);
|
|
}
|
|
|
|
void
|
|
ieee80211_status (int s, struct rt_addrinfo *info __unused)
|
|
{
|
|
int i;
|
|
int num;
|
|
struct ieee80211req ireq;
|
|
u_int8_t data[32];
|
|
char spacer;
|
|
|
|
(void) memset(&ireq, 0, sizeof(ireq));
|
|
(void) strncpy(ireq.i_name, name, sizeof(ireq.i_name));
|
|
ireq.i_data = &data;
|
|
|
|
ireq.i_type = IEEE80211_IOC_SSID;
|
|
ireq.i_val = -1;
|
|
if (ioctl(s, SIOCG80211, &ireq) < 0) {
|
|
/* If we can't get the SSID, the this isn't an 802.11 device. */
|
|
return;
|
|
}
|
|
printf("\tssid ");
|
|
print_string(data, ireq.i_len);
|
|
num = 0;
|
|
ireq.i_type = IEEE80211_IOC_NUMSSIDS;
|
|
if (ioctl(s, SIOCG80211, &ireq) >= 0) {
|
|
num = ireq.i_val;
|
|
}
|
|
ireq.i_type = IEEE80211_IOC_SSID;
|
|
for (ireq.i_val = 0; ireq.i_val < num; ireq.i_val++) {
|
|
if (ioctl(s, SIOCG80211, &ireq) >= 0 && ireq.i_len > 0) {
|
|
printf(" %d:", ireq.i_val + 1);
|
|
print_string(data, ireq.i_len);
|
|
}
|
|
}
|
|
printf("\n");
|
|
|
|
ireq.i_type = IEEE80211_IOC_STATIONNAME;
|
|
if (ioctl(s, SIOCG80211, &ireq) != -1) {
|
|
printf("\tstationname ");
|
|
print_string(data, ireq.i_len);
|
|
printf("\n");
|
|
}
|
|
|
|
ireq.i_type = IEEE80211_IOC_CHANNEL;
|
|
if (ioctl(s, SIOCG80211, &ireq) < 0) {
|
|
goto end;
|
|
}
|
|
printf("\tchannel %d", ireq.i_val);
|
|
|
|
ireq.i_type = IEEE80211_IOC_AUTHMODE;
|
|
if (ioctl(s, SIOCG80211, &ireq) != -1) {
|
|
printf(" authmode");
|
|
switch (ireq.i_val) {
|
|
case IEEE80211_AUTH_NONE:
|
|
printf(" NONE");
|
|
break;
|
|
case IEEE80211_AUTH_OPEN:
|
|
printf(" OPEN");
|
|
break;
|
|
case IEEE80211_AUTH_SHARED:
|
|
printf(" SHARED");
|
|
break;
|
|
default:
|
|
printf(" UNKNOWN");
|
|
break;
|
|
}
|
|
}
|
|
|
|
ireq.i_type = IEEE80211_IOC_POWERSAVE;
|
|
if (ioctl(s, SIOCG80211, &ireq) != -1 &&
|
|
ireq.i_val != IEEE80211_POWERSAVE_NOSUP ) {
|
|
printf(" powersavemode");
|
|
switch (ireq.i_val) {
|
|
case IEEE80211_POWERSAVE_OFF:
|
|
printf(" OFF");
|
|
break;
|
|
case IEEE80211_POWERSAVE_CAM:
|
|
printf(" CAM");
|
|
break;
|
|
case IEEE80211_POWERSAVE_PSP:
|
|
printf(" PSP");
|
|
break;
|
|
case IEEE80211_POWERSAVE_PSP_CAM:
|
|
printf(" PSP-CAM");
|
|
break;
|
|
}
|
|
|
|
ireq.i_type = IEEE80211_IOC_POWERSAVESLEEP;
|
|
if (ioctl(s, SIOCG80211, &ireq) != -1) {
|
|
if (ireq.i_val)
|
|
printf(" powersavesleep %d", ireq.i_val);
|
|
}
|
|
}
|
|
|
|
printf("\n");
|
|
|
|
spacer = '\t';
|
|
ireq.i_type = IEEE80211_IOC_RTSTHRESHOLD;
|
|
if (ioctl(s, SIOCG80211, &ireq) != -1) {
|
|
printf("%crtsthreshold %d", spacer, ireq.i_val);
|
|
spacer = ' ';
|
|
}
|
|
|
|
ireq.i_type = IEEE80211_IOC_PROTMODE;
|
|
if (ioctl(s, SIOCG80211, &ireq) != -1) {
|
|
printf("%cprotmode", spacer);
|
|
switch (ireq.i_val) {
|
|
case IEEE80211_PROTMODE_OFF:
|
|
printf(" OFF");
|
|
break;
|
|
case IEEE80211_PROTMODE_CTS:
|
|
printf(" CTS");
|
|
break;
|
|
case IEEE80211_PROTMODE_RTSCTS:
|
|
printf(" RTSCTS");
|
|
break;
|
|
default:
|
|
printf(" UNKNOWN");
|
|
break;
|
|
}
|
|
spacer = ' ';
|
|
}
|
|
|
|
ireq.i_type = IEEE80211_IOC_TXPOWER;
|
|
if (ioctl(s, SIOCG80211, &ireq) != -1) {
|
|
printf("%ctxpower %d", spacer, ireq.i_val);
|
|
spacer = ' ';
|
|
}
|
|
|
|
if (spacer != '\t')
|
|
printf("\n");
|
|
|
|
ireq.i_type = IEEE80211_IOC_WEP;
|
|
if (ioctl(s, SIOCG80211, &ireq) != -1 &&
|
|
ireq.i_val != IEEE80211_WEP_NOSUP) {
|
|
printf("\twepmode");
|
|
switch (ireq.i_val) {
|
|
case IEEE80211_WEP_OFF:
|
|
printf(" OFF");
|
|
break;
|
|
case IEEE80211_WEP_ON:
|
|
printf(" ON");
|
|
break;
|
|
case IEEE80211_WEP_MIXED:
|
|
printf(" MIXED");
|
|
break;
|
|
default:
|
|
printf(" UNKNOWN");
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* If we get here then we've got WEP support so we need
|
|
* to print WEP status.
|
|
*/
|
|
|
|
ireq.i_type = IEEE80211_IOC_WEPTXKEY;
|
|
if (ioctl(s, SIOCG80211, &ireq) < 0) {
|
|
warn("WEP support, but no tx key!");
|
|
goto end;
|
|
}
|
|
printf(" weptxkey %d", ireq.i_val+1);
|
|
|
|
ireq.i_type = IEEE80211_IOC_NUMWEPKEYS;
|
|
if (ioctl(s, SIOCG80211, &ireq) < 0) {
|
|
warn("WEP support, but no NUMWEPKEYS support!");
|
|
goto end;
|
|
}
|
|
num = ireq.i_val;
|
|
|
|
printf("\n");
|
|
|
|
ireq.i_type = IEEE80211_IOC_WEPKEY;
|
|
spacer = '\t';
|
|
for (i = 0; i < num; i++) {
|
|
ireq.i_val = i;
|
|
if (ioctl(s, SIOCG80211, &ireq) < 0) {
|
|
warn("WEP support, but can get keys!");
|
|
goto end;
|
|
}
|
|
if (ireq.i_len == 0 ||
|
|
ireq.i_len > IEEE80211_KEYBUF_SIZE)
|
|
continue;
|
|
printf("%cwepkey %d:%s", spacer, i+1,
|
|
ireq.i_len <= 5 ? "40-bit" :
|
|
ireq.i_len <= 13 ? "104-bit" : "128-bit");
|
|
if (spacer == '\t')
|
|
spacer = ' ';
|
|
}
|
|
if (spacer == ' ')
|
|
printf("\n");
|
|
}
|
|
|
|
end:
|
|
return;
|
|
}
|
|
|
|
static void
|
|
set80211(int s, int type, int val, int len, u_int8_t *data)
|
|
{
|
|
struct ieee80211req ireq;
|
|
|
|
(void) memset(&ireq, 0, sizeof(ireq));
|
|
(void) strncpy(ireq.i_name, name, sizeof(ireq.i_name));
|
|
ireq.i_type = type;
|
|
ireq.i_val = val;
|
|
ireq.i_len = len;
|
|
ireq.i_data = data;
|
|
if (ioctl(s, SIOCS80211, &ireq) < 0)
|
|
err(1, "SIOCS80211");
|
|
}
|
|
|
|
static const char *
|
|
get_string(const char *val, const char *sep, u_int8_t *buf, int *lenp)
|
|
{
|
|
int len;
|
|
int hexstr;
|
|
u_int8_t *p;
|
|
|
|
len = *lenp;
|
|
p = buf;
|
|
hexstr = (val[0] == '0' && tolower((u_char)val[1]) == 'x');
|
|
if (hexstr)
|
|
val += 2;
|
|
for (;;) {
|
|
if (*val == '\0')
|
|
break;
|
|
if (sep != NULL && strchr(sep, *val) != NULL) {
|
|
val++;
|
|
break;
|
|
}
|
|
if (hexstr) {
|
|
if (!isxdigit((u_char)val[0])) {
|
|
warnx("bad hexadecimal digits");
|
|
return NULL;
|
|
}
|
|
if (!isxdigit((u_char)val[1])) {
|
|
warnx("odd count hexadecimal digits");
|
|
return NULL;
|
|
}
|
|
}
|
|
if (p >= buf + len) {
|
|
if (hexstr)
|
|
warnx("hexadecimal digits too long");
|
|
else
|
|
warnx("string too long");
|
|
return NULL;
|
|
}
|
|
if (hexstr) {
|
|
#define tohex(x) (isdigit(x) ? (x) - '0' : tolower(x) - 'a' + 10)
|
|
*p++ = (tohex((u_char)val[0]) << 4) |
|
|
tohex((u_char)val[1]);
|
|
#undef tohex
|
|
val += 2;
|
|
} else
|
|
*p++ = *val++;
|
|
}
|
|
len = p - buf;
|
|
/* The string "-" is treated as the empty string. */
|
|
if (!hexstr && len == 1 && buf[0] == '-')
|
|
len = 0;
|
|
if (len < *lenp)
|
|
memset(p, 0, *lenp - len);
|
|
*lenp = len;
|
|
return val;
|
|
}
|
|
|
|
static void
|
|
print_string(const u_int8_t *buf, int len)
|
|
{
|
|
int i;
|
|
int hasspc;
|
|
|
|
i = 0;
|
|
hasspc = 0;
|
|
for (; i < len; i++) {
|
|
if (!isprint(buf[i]) && buf[i] != '\0')
|
|
break;
|
|
if (isspace(buf[i]))
|
|
hasspc++;
|
|
}
|
|
if (i == len) {
|
|
if (hasspc || len == 0 || buf[0] == '\0')
|
|
printf("\"%.*s\"", len, buf);
|
|
else
|
|
printf("%.*s", len, buf);
|
|
} else {
|
|
printf("0x");
|
|
for (i = 0; i < len; i++)
|
|
printf("%02x", buf[i]);
|
|
}
|
|
}
|
|
|