311 lines
8.2 KiB
C
311 lines
8.2 KiB
C
/*-
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* Copyright (c) 2004 Marius Strobl
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Handlers for Open Firmware /options node.
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*/
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#include <sys/types.h>
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#include <dev/ofw/openfirm.h>
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#include <err.h>
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#include <fcntl.h>
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#include <readpassphrase.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include "ofw_options.h"
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#include "ofw_util.h"
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#define OFWO_LOGO 512
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#define OFWO_MAXPROP 31
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#define OFWO_MAXPWD 8
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struct ofwo_extabent {
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const char *ex_prop;
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int (*ex_handler)(struct ofwo_extabent *, int, const void *,
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int, const char *);
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};
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static int ofwo_oemlogo(struct ofwo_extabent *, int, const void *, int,
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const char *);
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static int ofwo_secmode(struct ofwo_extabent *, int, const void *, int,
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const char *);
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static int ofwo_secpwd(struct ofwo_extabent *, int, const void *, int,
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const char *);
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static struct ofwo_extabent ofwo_extab[] = {
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{ "oem-logo", ofwo_oemlogo },
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{ "security-mode", ofwo_secmode },
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{ "security-password", ofwo_secpwd },
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{ NULL, NULL }
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};
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static int ofwo_setpass(int);
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static int ofwo_setstr(int, const void *, int, const char *, const char *);
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static __inline void
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ofwo_printprop(const char *prop, const char* buf, int buflen)
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{
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printf("%s: %.*s\n", prop, buflen, buf);
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}
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static int
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ofwo_oemlogo(struct ofwo_extabent *exent, int fd, const void *buf, int buflen,
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const char *val)
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{
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int lfd;
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char logo[OFWO_LOGO + 1];
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if (val) {
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if (val[0] == '\0')
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ofw_setprop(fd, ofw_optnode(fd), exent->ex_prop, "", 1);
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else {
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if ((lfd = open(val, O_RDONLY)) == -1) {
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warn("could not open '%s'", val);
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return (EX_USAGE);
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}
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if (read(lfd, logo, OFWO_LOGO) != OFWO_LOGO ||
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lseek(lfd, 0, SEEK_END) != OFWO_LOGO) {
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close(lfd);
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warnx("logo '%s' has wrong size.", val);
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return (EX_USAGE);
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}
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close(lfd);
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logo[OFWO_LOGO] = '\0';
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if (ofw_setprop(fd, ofw_optnode(fd), exent->ex_prop,
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logo, OFWO_LOGO + 1) != OFWO_LOGO)
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errx(EX_IOERR, "writing logo failed.");
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}
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} else
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if (buflen != 0)
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printf("%s: <logo data>\n", exent->ex_prop);
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else
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ofwo_printprop(exent->ex_prop, (const char *)buf,
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buflen);
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return (EX_OK);
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}
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static int
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ofwo_secmode(struct ofwo_extabent *exent, int fd, const void *buf, int buflen,
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const char *val)
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{
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int res;
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if (val) {
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if (strcmp(val, "full") == 0 || strcmp(val, "command") == 0) {
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if ((res = ofwo_setpass(fd)) != EX_OK)
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return (res);
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if ((res = ofwo_setstr(fd, buf, buflen, exent->ex_prop,
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val)) != EX_OK)
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ofw_setprop(fd, ofw_optnode(fd),
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"security-password", "", 1);
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return (res);
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}
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if (strcmp(val, "none") == 0) {
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ofw_setprop(fd, ofw_optnode(fd), "security-password",
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"", 1);
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return (ofwo_setstr(fd, buf, buflen, exent->ex_prop,
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val));
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}
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return (EX_DATAERR);
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} else
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ofwo_printprop(exent->ex_prop, (const char *)buf, buflen);
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return (EX_OK);
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}
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static int
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ofwo_secpwd(struct ofwo_extabent *exent, int fd __unused,
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const void *buf __unused, __unused int buflen, const char *val)
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{
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void *pbuf;
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int len, pblen, rv;
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pblen = 0;
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rv = EX_OK;
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pbuf = NULL;
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if (val) {
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len = ofw_getprop_alloc(fd, ofw_optnode(fd), "security-mode",
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&pbuf, &pblen, 1);
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if (len <= 0 || strncmp("none", (char *)pbuf, len) == 0) {
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rv = EX_CONFIG;
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warnx("no security mode set.");
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} else if (strncmp("command", (char *)pbuf, len) == 0 ||
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strncmp("full", (char *)pbuf, len) == 0) {
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rv = ofwo_setpass(fd);
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} else {
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rv = EX_CONFIG;
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warnx("invalid security mode.");
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}
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} else
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ofwo_printprop(exent->ex_prop, (const char *)buf, buflen);
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if (pbuf != NULL)
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free(pbuf);
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return (rv);
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}
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static int
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ofwo_setpass(int fd)
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{
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char pwd1[OFWO_MAXPWD + 1], pwd2[OFWO_MAXPWD + 1];
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if (readpassphrase("New password:", pwd1, sizeof(pwd1),
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RPP_ECHO_OFF | RPP_REQUIRE_TTY) == NULL ||
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readpassphrase("Retype new password:", pwd2, sizeof(pwd2),
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RPP_ECHO_OFF | RPP_REQUIRE_TTY) == NULL)
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errx(EX_USAGE, "failed to get password.");
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if (strlen(pwd1) == 0) {
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printf("Password unchanged.\n");
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return (EX_OK);
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}
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if (strcmp(pwd1, pwd2) != 0) {
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printf("Mismatch - password unchanged.\n");
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return (EX_USAGE);
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}
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ofw_setprop(fd, ofw_optnode(fd), "security-password", pwd1,
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strlen(pwd1) + 1);
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return (EX_OK);
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}
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static int
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ofwo_setstr(int fd, const void *buf, int buflen, const char *prop,
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const char *val)
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{
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void *pbuf;
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int len, pblen, rv;
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phandle_t optnode;
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char *oval;
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pblen = 0;
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rv = EX_OK;
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pbuf = NULL;
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optnode = ofw_optnode(fd);
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ofw_setprop(fd, optnode, prop, val, strlen(val) + 1);
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len = ofw_getprop_alloc(fd, optnode, prop, &pbuf, &pblen, 1);
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if (len < 0 || strncmp(val, (char *)pbuf, len) != 0) {
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/*
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* The value is too long for this property and the OFW has
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* truncated it to fit or the value is illegal and a legal
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* one has been written instead (e.g. attempted to write
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* "foobar" to a "true"/"false"-property) - try to recover
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* the old value.
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*/
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rv = EX_DATAERR;
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if ((oval = malloc(buflen + 1)) == NULL)
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err(EX_OSERR, "malloc() failed.");
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strncpy(oval, buf, buflen);
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oval[buflen] = '\0';
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len = ofw_setprop(fd, optnode, prop, oval, buflen + 1);
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if (len != buflen)
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errx(EX_IOERR, "recovery of old value failed.");
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free(oval);
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goto out;
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}
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printf("%s: %.*s%s->%s%.*s\n", prop, buflen, (const char *)buf,
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buflen > 0 ? " " : "", len > 0 ? " " : "", len, (char *)pbuf);
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out:
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if (pbuf != NULL)
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free(pbuf);
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return (rv);
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}
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void
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ofwo_dump(void)
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{
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void *pbuf;
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int fd, len, nlen, pblen;
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phandle_t optnode;
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char prop[OFWO_MAXPROP + 1];
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struct ofwo_extabent *ex;
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pblen = 0;
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pbuf = NULL;
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fd = ofw_open(O_RDONLY);
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optnode = ofw_optnode(fd);
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for (nlen = ofw_firstprop(fd, optnode, prop, sizeof(prop)); nlen != 0;
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nlen = ofw_nextprop(fd, optnode, prop, prop, sizeof(prop))) {
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len = ofw_getprop_alloc(fd, optnode, prop, &pbuf, &pblen, 1);
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if (len < 0)
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continue;
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if (strcmp(prop, "name") == 0)
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continue;
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for (ex = ofwo_extab; ex->ex_prop != NULL; ++ex)
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if (strcmp(ex->ex_prop, prop) == 0)
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break;
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if (ex->ex_prop != NULL)
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(*ex->ex_handler)(ex, fd, pbuf, len, NULL);
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else
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ofwo_printprop(prop, (char *)pbuf, len);
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}
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if (pbuf != NULL)
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free(pbuf);
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ofw_close(fd);
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}
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int
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ofwo_action(const char *prop, const char *val)
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{
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void *pbuf;
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int fd, len, pblen, rv;
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struct ofwo_extabent *ex;
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pblen = 0;
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rv = EX_OK;
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pbuf = NULL;
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if (strcmp(prop, "name") == 0)
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return (EX_UNAVAILABLE);
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if (val)
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fd = ofw_open(O_RDWR);
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else
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fd = ofw_open(O_RDONLY);
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len = ofw_getprop_alloc(fd, ofw_optnode(fd), prop, &pbuf, &pblen, 1);
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if (len < 0) {
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rv = EX_UNAVAILABLE;
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goto out;
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}
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for (ex = ofwo_extab; ex->ex_prop != NULL; ++ex)
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if (strcmp(ex->ex_prop, prop) == 0)
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break;
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if (ex->ex_prop != NULL)
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rv = (*ex->ex_handler)(ex, fd, pbuf, len, val);
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else if (val)
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rv = ofwo_setstr(fd, pbuf, len, prop, val);
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else
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ofwo_printprop(prop, (char *)pbuf, len);
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out:
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if (pbuf != NULL)
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free(pbuf);
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ofw_close(fd);
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return (rv);
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}
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