freebsd-src/lib/libsecureboot/readfile.c
Simon J. Gerraty 666554111a Update libsecureboot
Preparation for updating bearssl, pull in updates to libsecureboot.

o fix handling of some out-of-memory cases

o allow more control over reporting of Verified/Unverified files.
  this helps boot time when console output is slow

  o recheck verbose/debug level after reading any unverified file

o more debug support for vectx

o hash_string to support fake stat for tftp

o tests/tvo add -v to simply verify signatures

o vets.c allow for HAVE_BR_X509_TIME_CHECK which will greatly simplify
  verification in loader

o report date when certificate fails validity period checks

Reviewed by: stevek
Sponsored by: Juniper Networks, Inc.
2022-04-18 12:54:15 -07:00

83 lines
2.2 KiB
C

/*-
* Copyright (c) 2017-2018, Juniper Networks, Inc.
*
* 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 COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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("$FreeBSD$");
#include <libsecureboot.h>
unsigned char *
read_fd(int fd, size_t len)
{
int m, n, x;
unsigned char *buf;
buf = malloc(len + 1);
if (buf != NULL) {
for (x = 0, m = len; m > 0; ) {
n = read(fd, &buf[x], m);
if (n < 0)
break;
if (n > 0) {
m -= n;
x += n;
}
}
if (m == 0) {
buf[len] = '\0';
return (buf);
}
free(buf);
}
return (NULL);
}
unsigned char *
read_file(const char *path, size_t *len)
{
struct stat st;
unsigned char *ucp;
int fd;
if (len)
*len = 0;
if ((fd = open(path, O_RDONLY)) < 0)
return (NULL);
fstat(fd, &st);
ucp = read_fd(fd, st.st_size);
close(fd);
if (ucp != NULL) {
if (len != NULL)
*len = st.st_size;
}
#ifdef _STANDALONE
else
printf("%s: out of memory! %lu\n", __func__,
(unsigned long)len);
#endif
return (ucp);
}