From e47b2a0651ffe1867c844968ade7f6127957bf13 Mon Sep 17 00:00:00 2001
From: Nikos Mavrogiannopoulos <nmav@gnutls.org>
Date: Sat, 17 May 2014 09:11:10 +0200
Subject: [PATCH] Reverted ltostr() changes as the cause a significant delay to
 the library.

The best approach would be to eliminate the need for ltostr() completely.
Added LTOSTR_MAX_SIZE, to avoid overflows.
---
 lib/coding.c     | 4 ++--
 lib/decoding.c   | 6 +++---
 lib/element.c    | 2 +-
 lib/parser_aux.c | 2 +-
 lib/parser_aux.h | 1 +
 5 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/lib/coding.c b/lib/coding.c
index e4eb060..d6b7cf4 100644
--- a/lib/coding.c
+++ b/lib/coding.c
@@ -594,7 +594,7 @@ _asn1_insert_tag_der (asn1_node node, unsigned char *der, int *counter,
 {
   asn1_node p;
   int tag_len, is_tag_implicit;
-  unsigned char class, class_implicit = 0, temp[SIZEOF_UNSIGNED_INT * 3 + 1];
+  unsigned char class, class_implicit = 0, temp[MAX(SIZEOF_UNSIGNED_INT * 3 + 1, LTOSTR_MAX_SIZE)];
   unsigned long tag_implicit = 0;
   unsigned char tag_der[MAX_TAG_LEN];
 
@@ -1012,7 +1012,7 @@ asn1_der_coding (asn1_node element, const char *name, void *ider, int *len,
 		 char *ErrorDescription)
 {
   asn1_node node, p, p2;
-  unsigned char temp[SIZEOF_UNSIGNED_LONG_INT * 3 + 1];
+  unsigned char temp[MAX(LTOSTR_MAX_SIZE, SIZEOF_UNSIGNED_LONG_INT * 3 + 1)];
   int counter, counter_old, len2, len3, tlen, move, max_len, max_len_old;
   int err;
   unsigned char *der = ider;
diff --git a/lib/decoding.c b/lib/decoding.c
index f85451f..93bc962 100644
--- a/lib/decoding.c
+++ b/lib/decoding.c
@@ -302,7 +302,7 @@ _asn1_get_objectid_der (const unsigned char *der, int der_len, int *ret_len,
 {
   int len_len, len, k;
   int leading;
-  char temp[20];
+  char temp[LTOSTR_MAX_SIZE];
   unsigned long val, val1;
 
   *ret_len = 0;
@@ -1952,7 +1952,7 @@ asn1_der_decoding_element (asn1_node * structure, const char *elementName,
 		      counter += len2;
 		      if (len3 > 0)
 			{
-			  _asn1_ltostr (counter + len3, temp, sizeof(temp));
+			  _asn1_ltostr (counter + len3, temp);
 			  tlen = strlen (temp);
 
 			  if (tlen > 0)
@@ -2035,7 +2035,7 @@ asn1_der_decoding_element (asn1_node * structure, const char *elementName,
 		      counter += len2;
 		      if (len3)
 			{
-			  _asn1_ltostr (counter + len3, temp, sizeof(temp));
+			  _asn1_ltostr (counter + len3, temp);
 			  tlen = strlen (temp);
 
 			  if (tlen > 0)
diff --git a/lib/element.c b/lib/element.c
index 3f31aa2..359b3ab 100644
--- a/lib/element.c
+++ b/lib/element.c
@@ -130,7 +130,7 @@ int
 _asn1_append_sequence_set (asn1_node node)
 {
   asn1_node p, p2;
-  char temp[10];
+  char temp[LTOSTR_MAX_SIZE];
   long n;
 
   if (!node || !(node->down))
diff --git a/lib/parser_aux.c b/lib/parser_aux.c
index 31d1770..effedb2 100644
--- a/lib/parser_aux.c
+++ b/lib/parser_aux.c
@@ -536,7 +536,7 @@ char *
 _asn1_ltostr (long v, char *str)
 {
   long d, r;
-  char temp[20];
+  char temp[LTOSTR_MAX_SIZE];
   int count, k, start;
 
   if (v < 0)
diff --git a/lib/parser_aux.h b/lib/parser_aux.h
index f1e9a07..1f1aec2 100644
--- a/lib/parser_aux.h
+++ b/lib/parser_aux.h
@@ -52,6 +52,7 @@ void _asn1_delete_list (void);
 
 void _asn1_delete_list_and_nodes (void);
 
+#define LTOSTR_MAX_SIZE 20
 char *_asn1_ltostr (long v, char *str);
 
 asn1_node _asn1_find_up (asn1_node node);
-- 
2.7.4