FreeBSD-5.3/usr.sbin/eeprom/ofw_options.c
/*-
* Copyright (c) 2004 Marius Strobl
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/cdefs.h>
__FBSDID("$FreeBSD: src/usr.sbin/eeprom/ofw_options.c,v 1.3 2004/08/15 20:18:54 marius Exp $");
/*
* Handlers for Open Firmware /options node.
*/
#include <sys/types.h>
#include <dev/ofw/openfirm.h>
#include <err.h>
#include <fcntl.h>
#include <readpassphrase.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include "ofw_options.h"
#include "ofw_util.h"
#define OFWO_LOGO 512
#define OFWO_MAXPROP 31
#define OFWO_MAXPWD 8
struct ofwo_extabent {
const char *ex_prop;
int (*ex_handler)(struct ofwo_extabent *, int, const void *,
int, const char *);
};
static int ofwo_oemlogo(struct ofwo_extabent *, int, const void *, int,
const char *);
static int ofwo_secmode(struct ofwo_extabent *, int, const void *, int,
const char *);
static int ofwo_secpwd(struct ofwo_extabent *, int, const void *, int,
const char *);
static struct ofwo_extabent ofwo_extab[] = {
{ "oem-logo", ofwo_oemlogo },
{ "security-mode", ofwo_secmode },
{ "security-password", ofwo_secpwd },
{ NULL, NULL }
};
static int ofwo_setpass(int);
static int ofwo_setstr(int, const void *, int, const char *,
const char *);
static __inline void
ofwo_printprop(const char *prop, const char* buf, int buflen)
{
printf("%s: %.*s\n", prop, buflen, buf);
}
static int
ofwo_oemlogo(struct ofwo_extabent *exent, int fd, const void *buf, int buflen,
const char *val)
{
int lfd;
char logo[OFWO_LOGO + 1];
if (val) {
if (val[0] == '\0')
ofw_setprop(fd, ofw_optnode(fd), exent->ex_prop, "", 1);
else {
if ((lfd = open(val, O_RDONLY)) == -1) {
warn("could not open '%s'", val);
return (EX_USAGE);
}
if (read(lfd, logo, OFWO_LOGO) != OFWO_LOGO ||
lseek(lfd, 0, SEEK_END) != OFWO_LOGO) {
close(lfd);
warnx("logo '%s' has wrong size.", val);
return (EX_USAGE);
}
close(lfd);
logo[OFWO_LOGO] = '\0';
if (ofw_setprop(fd, ofw_optnode(fd), exent->ex_prop,
logo, OFWO_LOGO + 1) != OFWO_LOGO)
errx(EX_IOERR, "writing logo failed.");
}
} else
if (buflen != 0)
printf("%s: <logo data>\n", exent->ex_prop);
else
ofwo_printprop(exent->ex_prop, (const char *)buf,
buflen);
return (EX_OK);
}
static int
ofwo_secmode(struct ofwo_extabent *exent, int fd, const void *buf, int buflen,
const char *val)
{
int res;
if (val) {
if (strcmp(val, "full") == 0 || strcmp(val, "command") == 0) {
if ((res = ofwo_setpass(fd)) != EX_OK)
return (res);
if ((res = ofwo_setstr(fd, buf, buflen, exent->ex_prop,
val)) != EX_OK)
ofw_setprop(fd, ofw_optnode(fd),
"security-password", "", 1);
return (res);
}
if (strcmp(val, "none") == 0) {
ofw_setprop(fd, ofw_optnode(fd), "security-password",
"", 1);
return (ofwo_setstr(fd, buf, buflen, exent->ex_prop,
val));
}
return (EX_DATAERR);
} else
ofwo_printprop(exent->ex_prop, (const char *)buf, buflen);
return (EX_OK);
}
static int
ofwo_secpwd(struct ofwo_extabent *exent, int fd __unused,
const void *buf __unused, __unused int buflen, const char *val)
{
void *pbuf;
int len, pblen, rv;
pblen = 0;
rv = EX_OK;
pbuf = NULL;
if (val) {
len = ofw_getprop_alloc(fd, ofw_optnode(fd), "security-mode",
&pbuf, &pblen, 1);
if (len <= 0 || strncmp("none", (char *)pbuf, len) == 0) {
rv = EX_CONFIG;
warnx("no security mode set.");
} else if (strncmp("command", (char *)pbuf, len) == 0 ||
strncmp("full", (char *)pbuf, len) == 0) {
rv = ofwo_setpass(fd);
} else {
rv = EX_CONFIG;
warnx("invalid security mode.");
}
} else
ofwo_printprop(exent->ex_prop, (const char *)buf, buflen);
if (pbuf != NULL)
free(pbuf);
return (rv);
}
static int
ofwo_setpass(int fd)
{
char pwd1[OFWO_MAXPWD + 1], pwd2[OFWO_MAXPWD + 1];
if (readpassphrase("New password:", pwd1, sizeof(pwd1),
RPP_ECHO_OFF | RPP_REQUIRE_TTY) == NULL ||
readpassphrase("Retype new password:", pwd2, sizeof(pwd2),
RPP_ECHO_OFF | RPP_REQUIRE_TTY) == NULL)
errx(EX_USAGE, "failed to get password.");
if (strlen(pwd1) == 0) {
printf("Password unchanged.\n");
return (EX_OK);
}
if (strcmp(pwd1, pwd2) != 0) {
printf("Mismatch - password unchanged.\n");
return (EX_USAGE);
}
ofw_setprop(fd, ofw_optnode(fd), "security-password", pwd1,
strlen(pwd1) + 1);
return (EX_OK);
}
static int
ofwo_setstr(int fd, const void *buf, int buflen, const char *prop,
const char *val)
{
void *pbuf;
int len, pblen, rv;
phandle_t optnode;
char *oval;
pblen = 0;
rv = EX_OK;
pbuf = NULL;
optnode = ofw_optnode(fd);
ofw_setprop(fd, optnode, prop, val, strlen(val) + 1);
len = ofw_getprop_alloc(fd, optnode, prop, &pbuf, &pblen, 1);
if (len < 0 || strncmp(val, (char *)pbuf, len) != 0) {
/*
* The value is too long for this property and the OFW has
* truncated it to fit or the value is illegal and a legal
* one has been written instead (e.g. attempted to write
* "foobar" to a "true"/"false"-property) - try to recover
* the old value.
*/
rv = EX_DATAERR;
if ((oval = malloc(buflen + 1)) == NULL)
err(EX_OSERR, "malloc() failed.");
strncpy(oval, buf, buflen);
oval[buflen] = '\0';
len = ofw_setprop(fd, optnode, prop, oval, buflen + 1);
if (len != buflen)
errx(EX_IOERR, "recovery of old value failed.");
free(oval);
goto out;
}
printf("%s: %.*s%s->%s%.*s\n", prop, buflen, (const char *)buf,
buflen > 0 ? " " : "", len > 0 ? " " : "", len, (char *)pbuf);
out:
if (pbuf != NULL)
free(pbuf);
return (rv);
}
void
ofwo_dump(void)
{
void *pbuf;
int fd, len, nlen, pblen;
phandle_t optnode;
char prop[OFWO_MAXPROP + 1];
struct ofwo_extabent *ex;
pblen = 0;
pbuf = NULL;
fd = ofw_open(O_RDONLY);
optnode = ofw_optnode(fd);
for (nlen = ofw_firstprop(fd, optnode, prop, sizeof(prop)); nlen != 0;
nlen = ofw_nextprop(fd, optnode, prop, prop, sizeof(prop))) {
len = ofw_getprop_alloc(fd, optnode, prop, &pbuf, &pblen, 1);
if (len < 0)
continue;
if (strcmp(prop, "name") == 0)
continue;
for (ex = ofwo_extab; ex->ex_prop != NULL; ++ex)
if (strcmp(ex->ex_prop, prop) == 0)
break;
if (ex->ex_prop != NULL)
(*ex->ex_handler)(ex, fd, pbuf, len, NULL);
else
ofwo_printprop(prop, (char *)pbuf, len);
}
if (pbuf != NULL)
free(pbuf);
ofw_close(fd);
}
int
ofwo_action(const char *prop, const char *val)
{
void *pbuf;
int fd, len, pblen, rv;
struct ofwo_extabent *ex;
pblen = 0;
rv = EX_OK;
pbuf = NULL;
if (strcmp(prop, "name") == 0)
return (EX_UNAVAILABLE);
if (val)
fd = ofw_open(O_RDWR);
else
fd = ofw_open(O_RDONLY);
len = ofw_getprop_alloc(fd, ofw_optnode(fd), prop, &pbuf, &pblen, 1);
if (len < 0) {
rv = EX_UNAVAILABLE;
goto out;
}
for (ex = ofwo_extab; ex->ex_prop != NULL; ++ex)
if (strcmp(ex->ex_prop, prop) == 0)
break;
if (ex->ex_prop != NULL)
rv = (*ex->ex_handler)(ex, fd, pbuf, len, val);
else if (val)
rv = ofwo_setstr(fd, pbuf, len, prop, val);
else
ofwo_printprop(prop, (char *)pbuf, len);
out:
if (pbuf != NULL)
free(pbuf);
ofw_close(fd);
return (rv);
}