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Simplify ssl_add_cert_chain logic.

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This commit is contained in:
Dr. Stephen Henson 2014-03-09 16:12:20 +00:00
parent ab0f880433
commit d628885e9a
1 changed files with 50 additions and 57 deletions
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107
ssl/ssl_cert.c
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@ -1113,81 +1113,74 @@ static int ssl_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x)
int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l)
{
BUF_MEM *buf = s->init_buf;
int no_chain;
int i;
X509 *x;
STACK_OF(X509) *extra_certs;
X509_STORE *chain_store;
if (cpk)
x = cpk->x509;
else
x = NULL;
if (s->cert->chain_store)
chain_store = s->cert->chain_store;
else
chain_store = s->ctx->cert_store;
/* If we have a certificate specific chain use it, else use
* parent ctx.
*/
if (cpk && cpk->chain)
extra_certs = cpk->chain;
else
extra_certs = s->ctx->extra_certs;
if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || extra_certs)
no_chain = 1;
else
no_chain = 0;
/* TLSv1 sends a chain with nothing in it, instead of an alert */
if (!BUF_MEM_grow_clean(buf,10))
{
SSLerr(SSL_F_SSL_ADD_CERT_CHAIN,ERR_R_BUF_LIB);
return 0;
}
if (x != NULL)
if (!cpk || !cpk->x509)
return 1;
x = cpk->x509;
/* If we have a certificate specific chain use it, else use
* parent ctx.
*/
if (cpk->chain)
extra_certs = cpk->chain;
else
extra_certs = s->ctx->extra_certs;
if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || extra_certs)
chain_store = NULL;
else if (s->cert->chain_store)
chain_store = s->cert->chain_store;
else
chain_store = s->ctx->cert_store;
if (chain_store)
{
if (no_chain)
X509_STORE_CTX xs_ctx;
if (!X509_STORE_CTX_init(&xs_ctx,chain_store,x,NULL))
{
SSLerr(SSL_F_SSL_ADD_CERT_CHAIN,ERR_R_X509_LIB);
return(0);
}
X509_verify_cert(&xs_ctx);
/* Don't leave errors in the queue */
ERR_clear_error();
for (i=0; i < sk_X509_num(xs_ctx.chain); i++)
{
x = sk_X509_value(xs_ctx.chain, i);
if (!ssl_add_cert_to_buf(buf, l, x))
{
X509_STORE_CTX_cleanup(&xs_ctx);
return 0;
}
}
X509_STORE_CTX_cleanup(&xs_ctx);
}
else
{
if (!ssl_add_cert_to_buf(buf, l, x))
return 0;
for (i=0; i<sk_X509_num(extra_certs); i++)
{
x=sk_X509_value(extra_certs,i);
if (!ssl_add_cert_to_buf(buf, l, x))
return 0;
}
else
{
X509_STORE_CTX xs_ctx;
if (!X509_STORE_CTX_init(&xs_ctx,chain_store,x,NULL))
{
SSLerr(SSL_F_SSL_ADD_CERT_CHAIN,ERR_R_X509_LIB);
return(0);
}
X509_verify_cert(&xs_ctx);
/* Don't leave errors in the queue */
ERR_clear_error();
for (i=0; i < sk_X509_num(xs_ctx.chain); i++)
{
x = sk_X509_value(xs_ctx.chain, i);
if (!ssl_add_cert_to_buf(buf, l, x))
{
X509_STORE_CTX_cleanup(&xs_ctx);
return 0;
}
}
X509_STORE_CTX_cleanup(&xs_ctx);
}
}
for (i=0; i<sk_X509_num(extra_certs); i++)
{
x=sk_X509_value(extra_certs,i);
if (!ssl_add_cert_to_buf(buf, l, x))
return 0;
}
return 1;
}