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OCSP stapling: ssl_trusted_certificate directive.

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The directive allows to specify additional trusted Certificate Authority
certificates to be used during certificate verification.  In contrast to
ssl_client_certificate DNs of these cerificates aren't sent to a client
during handshake.

Trusted certificates are loaded regardless of the fact whether client
certificates verification is enabled as the same certificates will be
used for OCSP stapling, during construction of an OCSP request and for
verification of an OCSP response.

The same applies to a CRL (which is now always loaded).
This commit is contained in:
Maxim Dounin 2012-10-01 12:39:36 +00:00
parent 6a0f47e079
commit 3648ba7db8
4 changed files with 51 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
src/event/ngx_event_openssl.c
View File

@ -296,6 +296,33 @@ ngx_ssl_client_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *cert,
}
ngx_int_t
ngx_ssl_trusted_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *cert,
ngx_int_t depth)
{
SSL_CTX_set_verify_depth(ssl->ctx, depth);
if (cert->len == 0) {
return NGX_OK;
}
if (ngx_conf_full_name(cf->cycle, cert, 1) != NGX_OK) {
return NGX_ERROR;
}
if (SSL_CTX_load_verify_locations(ssl->ctx, (char *) cert->data, NULL)
== 0)
{
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_CTX_load_verify_locations(\"%s\") failed",
cert->data);
return NGX_ERROR;
}
return NGX_OK;
}
ngx_int_t
ngx_ssl_crl(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *crl)
{

2
src/event/ngx_event_openssl.h
View File

@ -101,6 +101,8 @@ ngx_int_t ngx_ssl_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl,
ngx_str_t *cert, ngx_str_t *key);
ngx_int_t ngx_ssl_client_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl,
ngx_str_t *cert, ngx_int_t depth);
ngx_int_t ngx_ssl_trusted_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl,
ngx_str_t *cert, ngx_int_t depth);
ngx_int_t ngx_ssl_crl(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *crl);
RSA *ngx_ssl_rsa512_key_callback(SSL *ssl, int is_export, int key_length);
ngx_int_t ngx_ssl_dhparam(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *file);

24
src/http/modules/ngx_http_ssl_module.c
View File

@ -124,6 +124,13 @@ static ngx_command_t ngx_http_ssl_commands[] = {
offsetof(ngx_http_ssl_srv_conf_t, client_certificate),
NULL },
{ ngx_string("ssl_trusted_certificate"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_slot,
NGX_HTTP_SRV_CONF_OFFSET,
offsetof(ngx_http_ssl_srv_conf_t, trusted_certificate),
NULL },
{ ngx_string("ssl_prefer_server_ciphers"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
@ -325,6 +332,7 @@ ngx_http_ssl_create_srv_conf(ngx_conf_t *cf)
* sscf->dhparam = { 0, NULL };
* sscf->ecdh_curve = { 0, NULL };
* sscf->client_certificate = { 0, NULL };
* sscf->trusted_certificate = { 0, NULL };
* sscf->crl = { 0, NULL };
* sscf->ciphers = { 0, NULL };
* sscf->shm_zone = NULL;
@ -380,6 +388,8 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
ngx_conf_merge_str_value(conf->client_certificate, prev->client_certificate,
"");
ngx_conf_merge_str_value(conf->trusted_certificate,
prev->trusted_certificate, "");
ngx_conf_merge_str_value(conf->crl, prev->crl, "");
ngx_conf_merge_str_value(conf->ecdh_curve, prev->ecdh_curve,
@ -479,10 +489,18 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
{
return NGX_CONF_ERROR;
}
}
if (ngx_ssl_crl(cf, &conf->ssl, &conf->crl) != NGX_OK) {
return NGX_CONF_ERROR;
}
if (ngx_ssl_trusted_certificate(cf, &conf->ssl,
&conf->trusted_certificate,
conf->verify_depth)
!= NGX_OK)
{
return NGX_CONF_ERROR;
}
if (ngx_ssl_crl(cf, &conf->ssl, &conf->crl) != NGX_OK) {
return NGX_CONF_ERROR;
}
if (conf->prefer_server_ciphers) {

1
src/http/modules/ngx_http_ssl_module.h
View File

@ -35,6 +35,7 @@ typedef struct {
ngx_str_t dhparam;
ngx_str_t ecdh_curve;
ngx_str_t client_certificate;
ngx_str_t trusted_certificate;
ngx_str_t crl;
ngx_str_t ciphers;