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Daniel Axtens
9a26abbc36
Import a very trimmed-down set of libtasn1 files: curl -L -O https://ftp.gnu.org/gnu/libtasn1/libtasn1-4.19.0.tar.gz tar xvzf libtasn1-4.19.0.tar.gz rm -rf grub-core/lib/libtasn1 mkdir -p grub-core/lib/libtasn1/lib mkdir -p grub-core/lib/libtasn1/tests cp libtasn1-4.19.0/{README.md,COPYING} grub-core/lib/libtasn1 cp libtasn1-4.19.0/lib/{coding.c,decoding.c,element.c,element.h,errors.c,gstr.c,gstr.h,int.h,parser_aux.c,parser_aux.h,structure.c,structure.h} grub-core/libtasn1/lib cp libtasn1-4.19.0/lib/includes/libtasn1.h grub-core/lib/libtasn1 cp libtasn1-4.19.0/tests/{CVE-2018-1000654-1_asn1_tab.h,CVE-2018-1000654-2_asn1_tab.h,CVE-2018-1000654.c,object-id-decoding.c,object-id-encoding.c,octet-string.c,reproducers.c,Test_overflow.c,Test_simple.c,Test_strings.c} grub-core/lib/libtasn1/tests rm -rf libtasn1-4.19.0* Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Gary Lin <glin@suse.com> Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com> Tested-by: Stefan Berger <stefanb@linux.ibm.com>
75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/*
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* Copyright (C) 2002-2022 Free Software Foundation, Inc.
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*
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* This file is part of LIBTASN1.
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*
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* The LIBTASN1 library is free software; you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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*/
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#include <int.h>
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#include "gstr.h"
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/* These function are like strcat, strcpy. They only
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* do bounds checking (they shouldn't cause buffer overruns),
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* and they always produce null terminated strings.
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*
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* They should be used only with null terminated strings.
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*/
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void
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_asn1_str_cat (char *dest, size_t dest_tot_size, const char *src)
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{
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size_t str_size = strlen (src);
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size_t dest_size = strlen (dest);
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if (dest_tot_size - dest_size > str_size)
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{
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strcat (dest, src);
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}
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else
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{
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if (dest_tot_size > dest_size)
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{
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strncat (dest, src, (dest_tot_size - dest_size) - 1);
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dest[dest_tot_size - 1] = 0;
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}
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}
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}
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/* Returns the bytes copied (not including the null terminator) */
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unsigned int
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_asn1_str_cpy (char *dest, size_t dest_tot_size, const char *src)
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{
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size_t str_size = strlen (src);
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if (dest_tot_size > str_size)
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{
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strcpy (dest, src);
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return str_size;
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}
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else
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{
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if (dest_tot_size > 0)
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{
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str_size = dest_tot_size - 1;
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memcpy (dest, src, str_size);
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dest[str_size] = 0;
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return str_size;
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}
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else
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return 0;
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}
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}
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