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check error_string_n size and truncate if too short

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toddouska
2013-05-20 10:36:06 -07:00
parent 8f5e98486f
commit 10e6e7fbb5
1 changed files with 12 additions and 1 deletions
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13
src/ssl.c
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@ -632,7 +632,18 @@ char* CyaSSL_ERR_error_string(unsigned long errNumber, char* data)
void CyaSSL_ERR_error_string_n(unsigned long e, char* buf, unsigned long len) void CyaSSL_ERR_error_string_n(unsigned long e, char* buf, unsigned long len)
{ {
CYASSL_ENTER("CyaSSL_ERR_error_string_n"); CYASSL_ENTER("CyaSSL_ERR_error_string_n");
if (len) CyaSSL_ERR_error_string(e, buf); if (len >= MAX_ERROR_SZ)
CyaSSL_ERR_error_string(e, buf);
else {
char tmp[MAX_ERROR_SZ];
CYASSL_MSG("Error buffer too short, truncating");
if (len) {
CyaSSL_ERR_error_string(e, tmp);
XMEMCPY(buf, tmp, len-1);
buf[len-1] = '\0';
}
}
} }