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Merge of r3960, r3961, r3962, r3963, r3965: 

SSL related fixes:

*) MSIE export versions are rare now, so RSA 512 key is generated on demand
   and is shared among all hosts instead of pregenerating for every HTTPS host
   on configuraiton phase. This decreases start time for configuration with
   large number of HTTPS hosts.
*) ECDHE support; patch by Adrian Kotelba
*) fix build by gcc46 with -Wunused-value option
*) fix SSL connection issues on platforms with 32-bit off_t
*) do not try to reuse and save a SSL session for a peer created on the fly
   by ngx_http_upstream_create_round_robin_peer(), since the peer lives
   only during request so the saved SSL session will never be used again
   and just causes memory leak
This commit is contained in:
Igor Sysoev 2011-08-29 12:35:53 +00:00
parent 951bdd4c70
commit 2d6041994f
8 changed files with 119 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/core/ngx_config.h
View File

@ -127,5 +127,7 @@ typedef intptr_t ngx_flag_t;
#define NGX_MAX_UINT32_VALUE (uint32_t) 0xffffffff
#endif
#define NGX_MAX_INT32_VALUE (uint32_t) 0x7fffffff
#endif /* _NGX_CONFIG_H_INCLUDED_ */

81
src/event/ngx_event_openssl.c
View File

@ -371,28 +371,18 @@ ngx_ssl_info_callback(const ngx_ssl_conn_t *ssl_conn, int where, int ret)
}
ngx_int_t
ngx_ssl_generate_rsa512_key(ngx_ssl_t *ssl)
RSA *
ngx_ssl_rsa512_key_callback(SSL *ssl, int is_export, int key_length)
{
RSA *key;
static RSA *key;
if (SSL_CTX_need_tmp_RSA(ssl->ctx) == 0) {
return NGX_OK;
if (key_length == 512) {
if (key == NULL) {
key = RSA_generate_key(512, RSA_F4, NULL, NULL);
}
}
key = RSA_generate_key(512, RSA_F4, NULL, NULL);
if (key) {
SSL_CTX_set_tmp_rsa(ssl->ctx, key);
RSA_free(key);
return NGX_OK;
}
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, "RSA_generate_key(512) failed");
return NGX_ERROR;
return key;
}
@ -478,6 +468,45 @@ ngx_ssl_dhparam(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *file)
return NGX_OK;
}
ngx_int_t
ngx_ssl_ecdh_curve(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *name)
{
#if OPENSSL_VERSION_NUMBER >= 0x0090800fL
#ifndef OPENSSL_NO_ECDH
int nid;
EC_KEY *ecdh;
/*
* Elliptic-Curve Diffie-Hellman parameters are either "named curves"
* from RFC 4492 section 5.1.1, or explicitely described curves over
* binary fields. OpenSSL only supports the "named curves", which provide
* maximum interoperability.
*/
nid = OBJ_sn2nid((const char *) name->data);
if (nid == 0) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"Unknown curve name \"%s\"", name->data);
return NGX_ERROR;
}
ecdh = EC_KEY_new_by_curve_name(nid);
if (ecdh == NULL) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"Unable to create curve \"%s\"", name->data);
return NGX_ERROR;
}
SSL_CTX_set_tmp_ecdh(ssl->ctx, ecdh);
SSL_CTX_set_options(ssl->ctx, SSL_OP_SINGLE_ECDH_USE);
EC_KEY_free(ecdh);
#endif
#endif
return NGX_OK;
}
ngx_int_t
ngx_ssl_create_connection(ngx_ssl_t *ssl, ngx_connection_t *c, ngx_uint_t flags)
@ -957,10 +986,10 @@ ngx_ssl_send_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
}
/* the maximum limit size is the maximum uint32_t value - the page size */
/* the maximum limit size is the maximum int32_t value - the page size */
if (limit == 0 || limit > (off_t) (NGX_MAX_UINT32_VALUE - ngx_pagesize)) {
limit = NGX_MAX_UINT32_VALUE - ngx_pagesize;
if (limit == 0 || limit > (off_t) (NGX_MAX_INT32_VALUE - ngx_pagesize)) {
limit = NGX_MAX_INT32_VALUE - ngx_pagesize;
}
buf = c->ssl->buf;
@ -1687,20 +1716,24 @@ ngx_ssl_get_cached_session(ngx_ssl_conn_t *ssl_conn, u_char *id, int len,
ngx_int_t rc;
ngx_shm_zone_t *shm_zone;
ngx_slab_pool_t *shpool;
ngx_connection_t *c;
ngx_rbtree_node_t *node, *sentinel;
ngx_ssl_session_t *sess;
ngx_ssl_sess_id_t *sess_id;
ngx_ssl_session_cache_t *cache;
u_char buf[NGX_SSL_MAX_SESSION_SIZE];
c = ngx_ssl_get_connection(ssl_conn);
#if (NGX_DEBUG)
ngx_connection_t *c;
#endif
hash = ngx_crc32_short(id, (size_t) len);
*copy = 0;
#if (NGX_DEBUG)
c = ngx_ssl_get_connection(ssl_conn);
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
"ssl get session: %08XD:%d", hash, len);
#endif
shm_zone = SSL_CTX_get_ex_data(SSL_get_SSL_CTX(ssl_conn),
ngx_ssl_session_cache_index);

3
src/event/ngx_event_openssl.h
View File

@ -99,8 +99,9 @@ ngx_int_t ngx_ssl_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl,
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_crl(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *crl);
ngx_int_t ngx_ssl_generate_rsa512_key(ngx_ssl_t *ssl);
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);
ngx_int_t ngx_ssl_ecdh_curve(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *name);
ngx_int_t ngx_ssl_session_cache(ngx_ssl_t *ssl, ngx_str_t *sess_ctx,
ssize_t builtin_session_cache, ngx_shm_zone_t *shm_zone, time_t timeout);
ngx_int_t ngx_ssl_create_connection(ngx_ssl_t *ssl, ngx_connection_t *c,

20
src/http/modules/ngx_http_ssl_module.c
View File

@ -13,7 +13,8 @@ typedef ngx_int_t (*ngx_ssl_variable_handler_pt)(ngx_connection_t *c,
ngx_pool_t *pool, ngx_str_t *s);
#define NGX_DEFAULT_CIPHERS "HIGH:!aNULL:!MD5"
#define NGX_DEFAULT_CIPHERS "HIGH:!aNULL:!MD5"
#define NGX_DEFAULT_ECDH_CURVE "prime256v1"
static ngx_int_t ngx_http_ssl_static_variable(ngx_http_request_t *r,
@ -78,6 +79,13 @@ static ngx_command_t ngx_http_ssl_commands[] = {
offsetof(ngx_http_ssl_srv_conf_t, dhparam),
NULL },
{ ngx_string("ssl_ecdh_curve"),
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, ecdh_curve),
NULL },
{ ngx_string("ssl_protocols"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_1MORE,
ngx_conf_set_bitmask_slot,
@ -312,6 +320,7 @@ ngx_http_ssl_create_srv_conf(ngx_conf_t *cf)
* sscf->certificate = { 0, NULL };
* sscf->certificate_key = { 0, NULL };
* sscf->dhparam = { 0, NULL };
* sscf->ecdh_curve = { 0, NULL };
* sscf->client_certificate = { 0, NULL };
* sscf->crl = { 0, NULL };
* sscf->ciphers = { 0, NULL };
@ -360,6 +369,9 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
"");
ngx_conf_merge_str_value(conf->crl, prev->crl, "");
ngx_conf_merge_str_value(conf->ecdh_curve, prev->ecdh_curve,
NGX_DEFAULT_ECDH_CURVE);
ngx_conf_merge_str_value(conf->ciphers, prev->ciphers, NGX_DEFAULT_CIPHERS);
@ -465,11 +477,13 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
}
/* a temporary 512-bit RSA key is required for export versions of MSIE */
if (ngx_ssl_generate_rsa512_key(&conf->ssl) != NGX_OK) {
SSL_CTX_set_tmp_rsa_callback(conf->ssl.ctx, ngx_ssl_rsa512_key_callback);
if (ngx_ssl_dhparam(cf, &conf->ssl, &conf->dhparam) != NGX_OK) {
return NGX_CONF_ERROR;
}
if (ngx_ssl_dhparam(cf, &conf->ssl, &conf->dhparam) != NGX_OK) {
if (ngx_ssl_ecdh_curve(cf, &conf->ssl, &conf->ecdh_curve) != NGX_OK) {
return NGX_CONF_ERROR;
}

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

@ -32,6 +32,7 @@ typedef struct {
ngx_str_t certificate;
ngx_str_t certificate_key;
ngx_str_t dhparam;
ngx_str_t ecdh_curve;
ngx_str_t client_certificate;
ngx_str_t crl;

29
src/http/ngx_http_upstream_round_robin.c
View File

@ -14,6 +14,15 @@ static ngx_int_t ngx_http_upstream_cmp_servers(const void *one,
static ngx_uint_t
ngx_http_upstream_get_peer(ngx_http_upstream_rr_peers_t *peers);
#if (NGX_HTTP_SSL)
static ngx_int_t ngx_http_upstream_empty_set_session(ngx_peer_connection_t *pc,
void *data);
static void ngx_http_upstream_empty_save_session(ngx_peer_connection_t *pc,
void *data);
#endif
ngx_int_t
ngx_http_upstream_init_round_robin(ngx_conf_t *cf,
@ -343,10 +352,8 @@ ngx_http_upstream_create_round_robin_peer(ngx_http_request_t *r,
r->upstream->peer.free = ngx_http_upstream_free_round_robin_peer;
r->upstream->peer.tries = rrp->peers->number;
#if (NGX_HTTP_SSL)
r->upstream->peer.set_session =
ngx_http_upstream_set_round_robin_peer_session;
r->upstream->peer.save_session =
ngx_http_upstream_save_round_robin_peer_session;
r->upstream->peer.set_session = ngx_http_upstream_empty_set_session;
r->upstream->peer.save_session = ngx_http_upstream_empty_save_session;
#endif
return NGX_OK;
@ -757,4 +764,18 @@ ngx_http_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc,
}
}
static ngx_int_t
ngx_http_upstream_empty_set_session(ngx_peer_connection_t *pc, void *data)
{
return NGX_OK;
}
static void
ngx_http_upstream_empty_save_session(ngx_peer_connection_t *pc, void *data)
{
return;
}
#endif

18
src/mail/ngx_mail_ssl_module.c
View File

@ -9,7 +9,8 @@
#include <ngx_mail.h>
#define NGX_DEFAULT_CIPHERS "HIGH:!aNULL:!MD5"
#define NGX_DEFAULT_CIPHERS "HIGH:!aNULL:!MD5"
#define NGX_DEFAULT_ECDH_CURVE "prime256v1"
static void *ngx_mail_ssl_create_conf(ngx_conf_t *cf);
@ -77,6 +78,13 @@ static ngx_command_t ngx_mail_ssl_commands[] = {
offsetof(ngx_mail_ssl_conf_t, dhparam),
NULL },
{ ngx_string("ssl_ecdh_curve"),
NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_slot,
NGX_MAIL_SRV_CONF_OFFSET,
offsetof(ngx_mail_ssl_conf_t, ecdh_curve),
NULL },
{ ngx_string("ssl_protocols"),
NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE,
ngx_conf_set_bitmask_slot,
@ -163,6 +171,7 @@ ngx_mail_ssl_create_conf(ngx_conf_t *cf)
* scf->certificate = { 0, NULL };
* scf->certificate_key = { 0, NULL };
* scf->dhparam = { 0, NULL };
* scf->ecdh_curve = { 0, NULL };
* scf->ciphers = { 0, NULL };
* scf->shm_zone = NULL;
*/
@ -204,6 +213,9 @@ ngx_mail_ssl_merge_conf(ngx_conf_t *cf, void *parent, void *child)
ngx_conf_merge_str_value(conf->dhparam, prev->dhparam, "");
ngx_conf_merge_str_value(conf->ecdh_curve, prev->ecdh_curve,
NGX_DEFAULT_ECDH_CURVE);
ngx_conf_merge_str_value(conf->ciphers, prev->ciphers, NGX_DEFAULT_CIPHERS);
@ -286,9 +298,7 @@ ngx_mail_ssl_merge_conf(ngx_conf_t *cf, void *parent, void *child)
SSL_CTX_set_options(conf->ssl.ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
}
if (ngx_ssl_generate_rsa512_key(&conf->ssl) != NGX_OK) {
return NGX_CONF_ERROR;
}
SSL_CTX_set_tmp_rsa_callback(conf->ssl.ctx, ngx_ssl_rsa512_key_callback);
if (ngx_ssl_dhparam(cf, &conf->ssl, &conf->dhparam) != NGX_OK) {
return NGX_CONF_ERROR;

1
src/mail/ngx_mail_ssl_module.h
View File

@ -34,6 +34,7 @@ typedef struct {
ngx_str_t certificate;
ngx_str_t certificate_key;
ngx_str_t dhparam;
ngx_str_t ecdh_curve;
ngx_str_t ciphers;