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Do not free zero-length integer

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This commit is contained in:
Andreas Steffen
2013-11-02 02:11:32 +01:00
parent a40c4bc28c
commit 1347c936bd
1 changed files with 10 additions and 5 deletions
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src/libstrongswan/asn1/asn1.c
+10 -5
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@@ -781,10 +781,17 @@ chunk_t asn1_integer(const char *mode, chunk_t content)
chunk_t object; chunk_t object;
size_t len; size_t len;
u_char *pos; u_char *pos;
bool move;
if (content.len == 0) if (content.len == 0)
{ /* make sure 0 is encoded properly */ { /* make sure 0 is encoded properly */
content = chunk_from_chars(0x00); content = chunk_from_chars(0x00);
move = FALSE;
}
else
{
move = (*mode == 'm');
} }
/* ASN.1 integers must be positive numbers in two's complement */ /* ASN.1 integers must be positive numbers in two's complement */
@@ -794,11 +801,9 @@ chunk_t asn1_integer(const char *mode, chunk_t content)
{ {
*pos++ = 0x00; *pos++ = 0x00;
} }
if (len) memcpy(pos, content.ptr, content.len);
{
memcpy(pos, content.ptr, content.len); if (move)
}
if (*mode == 'm')
{ {
free(content.ptr); free(content.ptr);
} }