# HG changeset patch
# User Nate Karstens <nate.karstens@garmin.com>
# Date 1503540237 18000
# Wed Aug 23 21:03:57 2017 -0500
# Node ID 62b4032371bd45217d40e2f0daf8ecd6956601d8
# Parent a11e114a2bcde4afb515dd0b70f3ef39693f475a
[PATCH 4 of 4] SSL: add identity hint config directive.

Adds the directive "ssl_psk_identity_hint" to the ngx_http_ssl_module.
This allows the user to specify the PSK identity hint given to the
connecting client.

Signed-off-by: Nate Karstens <nate.karstens@garmin.com>

diff -r a11e114a2bcd -r 62b4032371bd contrib/vim/syntax/nginx.vim
--- a/contrib/vim/syntax/nginx.vim Wed Aug 23 21:03:31 2017 -0500
+++ b/contrib/vim/syntax/nginx.vim Wed Aug 23 21:03:57 2017 -0500
@@ -551,6 +551,7 @@ syn keyword ngxDirective contained ssl_p
syn keyword ngxDirective contained ssl_preread
syn keyword ngxDirective contained ssl_protocols
syn keyword ngxDirective contained ssl_psk_file
+syn keyword ngxDirective contained ssl_psk_identity_hint
syn keyword ngxDirective contained ssl_session_cache
syn keyword ngxDirective contained ssl_session_ticket_key
syn keyword ngxDirective contained ssl_session_tickets
diff -r a11e114a2bcd -r 62b4032371bd src/event/ngx_event_openssl.c
--- a/src/event/ngx_event_openssl.c Wed Aug 23 21:03:31 2017 -0500
+++ b/src/event/ngx_event_openssl.c Wed Aug 23 21:03:57 2017 -0500
@@ -1177,7 +1177,8 @@ ngx_ssl_ecdh_curve(ngx_conf_t *cf, ngx_s


ngx_int_t
-ngx_ssl_psk_file(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *file)
+ngx_ssl_psk_file(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *file,
+ ngx_str_t *identity_hint)
{
#ifdef PSK_MAX_IDENTITY_LEN

@@ -1230,6 +1231,14 @@ failed:
return NGX_ERROR;
}

+ if (SSL_CTX_use_psk_identity_hint(ssl->ctx, (char *) identity_hint->data)
+ == 0)
+ {
+ ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
+ "SSL_CTX_use_psk_identity_hint() failed");
+ return NGX_ERROR;
+ }
+
SSL_CTX_set_psk_server_callback(ssl->ctx, ngx_ssl_psk_callback);

#endif
diff -r a11e114a2bcd -r 62b4032371bd src/event/ngx_event_openssl.h
--- a/src/event/ngx_event_openssl.h Wed Aug 23 21:03:31 2017 -0500
+++ b/src/event/ngx_event_openssl.h Wed Aug 23 21:03:57 2017 -0500
@@ -172,7 +172,8 @@ ngx_int_t ngx_ssl_session_cache(ngx_ssl_
ngx_int_t ngx_ssl_session_ticket_keys(ngx_conf_t *cf, ngx_ssl_t *ssl,
ngx_array_t *paths);
ngx_int_t ngx_ssl_session_cache_init(ngx_shm_zone_t *shm_zone, void *data);
-ngx_int_t ngx_ssl_psk_file(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *file);
+ngx_int_t ngx_ssl_psk_file(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *file,
+ ngx_str_t *identity_hint);
ngx_int_t ngx_ssl_create_connection(ngx_ssl_t *ssl, ngx_connection_t *c,
ngx_uint_t flags);

diff -r a11e114a2bcd -r 62b4032371bd src/http/modules/ngx_http_ssl_module.c
--- a/src/http/modules/ngx_http_ssl_module.c Wed Aug 23 21:03:31 2017 -0500
+++ b/src/http/modules/ngx_http_ssl_module.c Wed Aug 23 21:03:57 2017 -0500
@@ -241,6 +241,13 @@ static ngx_command_t ngx_http_ssl_comma
offsetof(ngx_http_ssl_srv_conf_t, psk_file),
NULL },

+ { ngx_string("ssl_psk_identity_hint"),
+ 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, psk_identity_hint),
+ NULL },
+
ngx_null_command
};

@@ -554,6 +561,7 @@ ngx_http_ssl_create_srv_conf(ngx_conf_t
* sscf->stapling_file = { 0, NULL };
* sscf->stapling_responder = { 0, NULL };
* sscf->psk_file = { 0, NULL };
+ * sscf->psk_identity_hint = { 0, NULL };
*/

sscf->enable = NGX_CONF_UNSET;
@@ -636,6 +644,8 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t *
prev->stapling_responder, "");

ngx_conf_merge_str_value(conf->psk_file, prev->psk_file, "");
+ ngx_conf_merge_str_value(conf->psk_identity_hint,
+ prev->psk_identity_hint, "");

conf->ssl.log = cf->log;

@@ -817,7 +827,10 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t *

}

- if (ngx_ssl_psk_file(cf, &conf->ssl, &conf->psk_file) != NGX_OK) {
+ if (ngx_ssl_psk_file(cf, &conf->ssl, &conf->psk_file,
+ &conf->psk_identity_hint)
+ != NGX_OK)
+ {
return NGX_CONF_ERROR;
}

diff -r a11e114a2bcd -r 62b4032371bd src/http/modules/ngx_http_ssl_module.h
--- a/src/http/modules/ngx_http_ssl_module.h Wed Aug 23 21:03:31 2017 -0500
+++ b/src/http/modules/ngx_http_ssl_module.h Wed Aug 23 21:03:57 2017 -0500
@@ -56,6 +56,7 @@ typedef struct {
ngx_str_t stapling_responder;

ngx_str_t psk_file;
+ ngx_str_t psk_identity_hint;

u_char *file;
ngx_uint_t line;

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