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Determine whether CRT is initialized or not through raw data pointer

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Previously, `mbedtls_x509_crt_der_internal()` used the `version` field
(which is `0` after initialization but strictly greater than 0 once a
CRT has successfully been parsed) to determine whether an
`mbedtls_x509_crt` instance had already been setup.

Preparating for the removal of `version` from the structure, this
commit modifies the code to instead peek at the raw data pointer,
which is NULL as long as the CRT structure hasn't been setup with a CRT,
and will be kept in the new CRT structure.
This commit is contained in:
Hanno Becker 2019-02-25 18:08:59 +00:00
parent 4f869eda64
commit 371e0e4573
2 changed files with 3 additions and 3 deletions
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2
library/ssl_srv.c
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@ -2955,7 +2955,7 @@ static int ssl_write_certificate_request( mbedtls_ssl_context *ssl )
#endif
crt = ssl->conf->ca_chain;
while( crt != NULL && crt->version != 0 )
while( crt != NULL && crt->raw.p != NULL )
{
dn_size = crt->subject_raw.len;

4
library/x509_crt.c
View file

@ -1321,7 +1321,7 @@ static int mbedtls_x509_crt_parse_der_internal( mbedtls_x509_crt *chain,
if( crt == NULL || buf == NULL )
return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
while( crt->version != 0 && crt->next != NULL )
while( crt->raw.p != NULL && crt->next != NULL )
{
prev = crt;
crt = crt->next;
@ -1330,7 +1330,7 @@ static int mbedtls_x509_crt_parse_der_internal( mbedtls_x509_crt *chain,
/*
* Add new certificate on the end of the chain if needed.
*/
if( crt->version != 0 && crt->next == NULL )
if( crt->raw.p != NULL && crt->next == NULL )
{
crt->next = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) );