int i2d_X509_AUX(X509 *a, unsigned char **pp)
{
int length;
length = i2d_X509(a, pp);
if(a) length += i2d_X509_CERT_AUX(a->aux, pp);
return length;
}
/*
* Serialize trusted certificate to *pp or just return the required buffer
* length if pp == NULL. We ultimately want to avoid modifying *pp in the
* error path, but that depends on similar hygiene in lower-level functions.
* Here we avoid compounding the problem.
*/
static int i2d_x509_aux_internal(X509 *a, unsigned char **pp)
{
int length, tmplen;
unsigned char *start = pp != NULL ? *pp : NULL;
assert(pp == NULL || *pp != NULL);
/*
* This might perturb *pp on error, but fixing that belongs in i2d_X509()
* not here. It should be that if a == NULL length is zero, but we check
* both just in case.
*/
length = i2d_X509(a, pp);
if (length <= 0 || a == NULL) {
return length;
}
tmplen = i2d_X509_CERT_AUX(a->aux, pp);
if (tmplen < 0) {
if (start != NULL)
*pp = start;
return tmplen;
}
length += tmplen;
return length;
}