/**
* Parse one X.509 certificate in DER format from a buffer and add them to a
* chained list.
*/
int
ttls_x509_crt_parse_der(ttls_x509_crt *chain, unsigned char *buf, size_t buflen)
{
int r;
ttls_x509_crt *crt = chain, *prev = NULL;
BUG_ON(!crt || !buf);
while (crt->version && crt->next) {
prev = crt;
crt = crt->next;
}
/* Add new certificate on the end of the chain if needed. */
if (crt->version && !crt->next) {
crt->next = kmalloc(sizeof(ttls_x509_crt), GFP_KERNEL);
if (!crt->next)
return TTLS_ERR_X509_ALLOC_FAILED;
prev = crt;
ttls_x509_crt_init(crt->next);
crt = crt->next;
}
if ((r = x509_crt_parse_der_core(crt, buf, buflen))) {
if (prev)
prev->next = NULL;
if (crt != chain)
kfree(crt);
return r;
}
return 0;
}
/*
* Parse one X.509 certificate in DER format from a buffer and add them to a
* chained list
*/
int x509_crt_parse_der( x509_crt *chain, const unsigned char *buf,
size_t buflen )
{
int ret;
x509_crt *crt = chain, *prev = NULL;
/*
* Check for valid input
*/
if( crt == NULL || buf == NULL )
return( POLARSSL_ERR_X509_BAD_INPUT_DATA );
while( crt->version != 0 && crt->next != NULL )
{
prev = crt;
crt = crt->next;
}
/*
* Add new certificate on the end of the chain if needed.
*/
if ( crt->version != 0 && crt->next == NULL)
{
crt->next = (x509_crt *) polarssl_malloc( sizeof( x509_crt ) );
if( crt->next == NULL )
return( POLARSSL_ERR_X509_MALLOC_FAILED );
prev = crt;
crt = crt->next;
x509_crt_init( crt );
}
if( ( ret = x509_crt_parse_der_core( crt, buf, buflen ) ) != 0 )
{
if( prev )
prev->next = NULL;
if( crt != chain )
polarssl_free( crt );
return( ret );
}
return( 0 );
}
