+int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain)
+ {
+ CERT_PKEY *cpk = c->key;
+ if (!cpk)
+ return 0;
+ if (cpk->chain)
+ sk_X509_pop_free(cpk->chain, X509_free);
+ cpk->chain = chain;
+ return 1;
+ }
+
+int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain)
+ {
+ STACK_OF(X509) *dchain;
+ X509 *x;
+ int i;
+ if (!chain)
+ return ssl_cert_set0_chain(c, NULL);
+ dchain = sk_X509_dup(chain);
+ if (!dchain)
+ return 0;
+ for (i = 0; i < sk_X509_num(dchain); i++)
+ {
+ x = sk_X509_value(dchain, i);
+ CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
+ }
+ if (!ssl_cert_set0_chain(c, dchain))
+ {
+ sk_X509_pop_free(dchain, X509_free);
+ return 0;
+ }
+ return 1;
+ }
+
+int ssl_cert_add0_chain_cert(CERT *c, X509 *x)
+ {
+ CERT_PKEY *cpk = c->key;
+ if (!cpk)
+ return 0;
+ if (!cpk->chain)
+ cpk->chain = sk_X509_new_null();
+ if (!cpk->chain || !sk_X509_push(cpk->chain, x))
+ return 0;
+ return 1;
+ }
+
+int ssl_cert_add1_chain_cert(CERT *c, X509 *x)
+ {
+ if (!ssl_cert_add0_chain_cert(c, x))
+ return 0;
+ CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
+ return 1;
+ }