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203 lines
6.8 KiB
203 lines
6.8 KiB
2 years ago
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Daniel Axtens <dja@axtens.net>
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Date: Fri, 1 May 2020 20:44:29 +1000
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Subject: [PATCH] libtasn1: changes for grub compatibility
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Do a few things to make libtasn1 compile as part of grub:
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- replace strcat. grub removed strcat so replace it with the appropriate
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calls to memcpy and strlen.
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- replace c_isdigit with grub_isdigit (and don't import c-ctype from
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gnulib) grub_isdigit provides the same functionality as c_isdigit: it
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determines if the input is an ASCII digit without regard for locale.
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- replace GL_ATTRIBUTE_PURE with __attribute__((pure)) which been
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supported since gcc-2.96. This avoids messing around with gnulib.
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- adjust libtasn1.h: drop the ASN1_API logic, it's not needed for our
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modules. Unconditionally support const and pure attributes and adjust
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header paths.
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- adjust header paths to "grub/libtasn1.h".
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- replace a 64 bit division with a call to grub_divmod64, preventing
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creation of __udivdi3 calls on 32 bit platforms.
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Signed-off-by: Daniel Axtens <dja@axtens.net>
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---
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grub-core/lib/libtasn1/lib/decoding.c | 11 ++++++-----
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grub-core/lib/libtasn1/lib/element.c | 3 ++-
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grub-core/lib/libtasn1/lib/gstr.c | 4 ++--
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grub-core/lib/libtasn1/lib/parser_aux.c | 7 ++++---
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grub-core/lib/libtasn1/lib/int.h | 4 ++--
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include/grub/libtasn1.h | 26 ++++++--------------------
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6 files changed, 22 insertions(+), 33 deletions(-)
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diff --git a/grub-core/lib/libtasn1/lib/decoding.c b/grub-core/lib/libtasn1/lib/decoding.c
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index 42f9a92b5d..7856858b27 100644
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--- a/grub-core/lib/libtasn1/lib/decoding.c
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+++ b/grub-core/lib/libtasn1/lib/decoding.c
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@@ -32,7 +32,8 @@
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#include <element.h>
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#include <limits.h>
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#include <intprops.h>
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-#include <c-ctype.h>
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+
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+#define c_isdigit grub_isdigit
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#ifdef DEBUG
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# define warn() fprintf(stderr, "%s: %d\n", __func__, __LINE__)
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@@ -2008,8 +2009,8 @@ asn1_expand_octet_string (asn1_node_const definitions, asn1_node * element,
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(p2->type & CONST_ASSIGN))
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{
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strcpy (name, definitions->name);
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- strcat (name, ".");
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- strcat (name, p2->name);
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+ memcpy (name + strlen(name), ".", sizeof(" . "));
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+ memcpy (name + strlen(name), p2->name, strlen(p2->name) + 1);
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len = sizeof (value);
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result = asn1_read_value (definitions, name, value, &len);
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@@ -2026,8 +2027,8 @@ asn1_expand_octet_string (asn1_node_const definitions, asn1_node * element,
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if (p2)
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{
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strcpy (name, definitions->name);
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- strcat (name, ".");
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- strcat (name, p2->name);
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+ memcpy (name + strlen(name), ".", sizeof(" . "));
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+ memcpy (name + strlen(name), p2->name, strlen(p2->name) + 1);
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result = asn1_create_element (definitions, name, &aux);
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if (result == ASN1_SUCCESS)
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diff --git a/grub-core/lib/libtasn1/lib/element.c b/grub-core/lib/libtasn1/lib/element.c
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index 539008d8e9..ed761ff56b 100644
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--- a/grub-core/lib/libtasn1/lib/element.c
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+++ b/grub-core/lib/libtasn1/lib/element.c
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@@ -30,9 +30,10 @@
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#include "parser_aux.h"
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#include <gstr.h>
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#include "structure.h"
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-#include "c-ctype.h"
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#include "element.h"
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+#define c_isdigit grub_isdigit
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+
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void
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_asn1_hierarchical_name (asn1_node_const node, char *name, int name_size)
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{
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diff --git a/grub-core/lib/libtasn1/lib/gstr.c b/grub-core/lib/libtasn1/lib/gstr.c
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index e91a3a151c..e33875c2c7 100644
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--- a/grub-core/lib/libtasn1/lib/gstr.c
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+++ b/grub-core/lib/libtasn1/lib/gstr.c
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@@ -36,13 +36,13 @@ _asn1_str_cat (char *dest, size_t dest_tot_size, const char *src)
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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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+ memcpy (dest + dest_size, src, str_size + 1);
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}
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else
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{
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if (dest_tot_size - dest_size > 0)
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{
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- strncat (dest, src, (dest_tot_size - dest_size) - 1);
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+ memcpy (dest + dest_size, 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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diff --git a/grub-core/lib/libtasn1/lib/parser_aux.c b/grub-core/lib/libtasn1/lib/parser_aux.c
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index d5dbbf8765..89c9be69dc 100644
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--- a/grub-core/lib/libtasn1/lib/parser_aux.c
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+++ b/grub-core/lib/libtasn1/lib/parser_aux.c
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@@ -26,7 +26,8 @@
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#include "gstr.h"
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#include "structure.h"
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#include "element.h"
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-#include "c-ctype.h"
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+
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+#define c_isdigit grub_isdigit
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char _asn1_identifierMissing[ASN1_MAX_NAME_SIZE + 1]; /* identifier name not found */
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@@ -40,7 +41,7 @@ char _asn1_identifierMissing[ASN1_MAX_NAME_SIZE + 1]; /* identifier name not fou
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#ifdef __clang__
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__attribute__((no_sanitize("integer")))
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#endif
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-_GL_ATTRIBUTE_PURE
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+__attribute__((__pure__))
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static unsigned int
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_asn1_hash_name (const char *x)
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{
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@@ -634,7 +635,7 @@ _asn1_ltostr (int64_t v, char str[LTOSTR_MAX_SIZE])
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count = 0;
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do
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{
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- d = val / 10;
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+ d = grub_divmod64(val, 10, NULL);
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r = val - d * 10;
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temp[start + count] = '0' + (char) r;
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count++;
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diff --git a/grub-core/lib/libtasn1/lib/int.h b/grub-core/lib/libtasn1/lib/int.h
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index ea1625786c..4a568efee9 100644
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--- a/grub-core/lib/libtasn1/lib/int.h
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+++ b/grub-core/lib/libtasn1/lib/int.h
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@@ -35,7 +35,7 @@
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#include <sys/types.h>
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#endif
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-#include <libtasn1.h>
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+#include "grub/libtasn1.h"
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#define ASN1_SMALL_VALUE_SIZE 16
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@@ -115,7 +115,7 @@ extern const tag_and_class_st _asn1_tags[];
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#define _asn1_strtoul(n,e,b) strtoul((const char *) n, e, b)
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#define _asn1_strcmp(a,b) strcmp((const char *)a, (const char *)b)
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#define _asn1_strcpy(a,b) strcpy((char *)a, (const char *)b)
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-#define _asn1_strcat(a,b) strcat((char *)a, (const char *)b)
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+#define _asn1_strcat(a,b) memcpy((char *)a + strlen((const char *)a), (const char *)b, strlen((const char *)b) + 1)
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#if SIZEOF_UNSIGNED_LONG_INT == 8
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# define _asn1_strtou64(n,e,b) strtoul((const char *) n, e, b)
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diff --git a/include/grub/libtasn1.h b/include/grub/libtasn1.h
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index 785eda2ae3..28dbf16c4e 100644
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--- a/include/grub/libtasn1.h
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+++ b/include/grub/libtasn1.h
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@@ -38,29 +38,15 @@
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#ifndef LIBTASN1_H
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#define LIBTASN1_H
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-#ifndef ASN1_API
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-#if defined ASN1_BUILDING && defined HAVE_VISIBILITY && HAVE_VISIBILITY
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-#define ASN1_API __attribute__((__visibility__("default")))
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-#elif defined ASN1_BUILDING && defined _MSC_VER && ! defined ASN1_STATIC
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-#define ASN1_API __declspec(dllexport)
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-#elif defined _MSC_VER && ! defined ASN1_STATIC
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-#define ASN1_API __declspec(dllimport)
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-#else
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+/* grub: ASN1_API is not used */
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#define ASN1_API
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-#endif
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-#endif
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-#ifdef __GNUC__
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-# define __LIBTASN1_CONST__ __attribute__((const))
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-# define __LIBTASN1_PURE__ __attribute__((pure))
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-#else
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-# define __LIBTASN1_CONST__
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-# define __LIBTASN1_PURE__
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-#endif
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+/* grub: all our supported compilers support these attributes */
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+#define __LIBTASN1_CONST__ __attribute__((const))
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+#define __LIBTASN1_PURE__ __attribute__((pure))
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-#include <sys/types.h>
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-#include <time.h>
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-#include <stdio.h> /* for FILE* */
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+#include <grub/types.h>
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+#include <grub/time.h>
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#ifdef __cplusplus
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extern "C"
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