diff options
Diffstat (limited to 'usr.sbin/eeprom/ofw_options.c')
| -rw-r--r-- | usr.sbin/eeprom/ofw_options.c | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/usr.sbin/eeprom/ofw_options.c b/usr.sbin/eeprom/ofw_options.c new file mode 100644 index 0000000..eb7437f --- /dev/null +++ b/usr.sbin/eeprom/ofw_options.c @@ -0,0 +1,310 @@ +/*- + * 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("$FreeBSD$"); + +/* + * 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)(const struct ofwo_extabent *, int, + const void *, int, const char *); +}; + +static int ofwo_oemlogo(const struct ofwo_extabent *, int, const void *, + int, const char *); +static int ofwo_secmode(const struct ofwo_extabent *, int, const void *, + int, const char *); +static int ofwo_secpwd(const struct ofwo_extabent *, int, const void *, + int, const char *); + +static const struct ofwo_extabent const 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(const 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(const 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(const struct ofwo_extabent *exent, int fd, const void *buf, + 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]; + const 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; + const 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); +} |
