# HG changeset patch
# User Nate Karstens <nate.karstens@garmin.com>
# Date 1501265943 18000
# Fri Jul 28 13:19:03 2017 -0500
# Node ID d47b57ebf82c1eedb4236a661b9d786dfd06b468
# Parent 00a1466fe33b8969ef765d8d0547dfbc7c97dd4e
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 00a1466fe33b -r d47b57ebf82c contrib/vim/syntax/nginx.vim
--- a/contrib/vim/syntax/nginx.vim Fri Jul 28 13:18:15 2017 -0500
+++ b/contrib/vim/syntax/nginx.vim Fri Jul 28 13:19:03 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 00a1466fe33b -r d47b57ebf82c src/event/ngx_event_openssl.c
--- a/src/event/ngx_event_openssl.c Fri Jul 28 13:18:15 2017 -0500
+++ b/src/event/ngx_event_openssl.c Fri Jul 28 13:19:03 2017 -0500
@@ -3281,7 +3281,8 @@ ngx_ssl_session_ticket_keys(ngx_conf_t *


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)
{
#if OPENSSL_VERSION_NUMBER >= 0x1000000fL
if (SSL_CTX_set_ex_data(ssl->ctx, ngx_ssl_psk_index, file) == 0) {
@@ -3290,6 +3291,13 @@ ngx_ssl_psk_file(ngx_conf_t *cf, ngx_ssl
return NGX_ERROR;
}

+ if (SSL_CTX_use_psk_identity_hint(ssl->ctx,
+ (char *) identity_hint->data) == 0) {
+ ngx_ssl_error(NGX_LOG_ALERT, 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 00a1466fe33b -r d47b57ebf82c src/event/ngx_event_openssl.h
--- a/src/event/ngx_event_openssl.h Fri Jul 28 13:18:15 2017 -0500
+++ b/src/event/ngx_event_openssl.h Fri Jul 28 13:19:03 2017 -0500
@@ -171,7 +171,8 @@ ngx_int_t ngx_ssl_session_cache(ngx_ssl_
ssize_t builtin_session_cache, ngx_shm_zone_t *shm_zone, time_t timeout);
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_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_session_cache_init(ngx_shm_zone_t *shm_zone, void *data);
ngx_int_t ngx_ssl_create_connection(ngx_ssl_t *ssl, ngx_connection_t *c,
ngx_uint_t flags);
diff -r 00a1466fe33b -r d47b57ebf82c src/http/modules/ngx_http_ssl_module.c
--- a/src/http/modules/ngx_http_ssl_module.c Fri Jul 28 13:18:15 2017 -0500
+++ b/src/http/modules/ngx_http_ssl_module.c Fri Jul 28 13:19:03 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
};

@@ -550,6 +557,7 @@ 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;
@@ -632,6 +640,7 @@ 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;

@@ -813,7 +822,8 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t *

}

- if (ngx_ssl_psk_file(cf, &conf->ssl, &conf->psk_file)
+ if (ngx_ssl_psk_file(cf, &conf->ssl, &conf->psk_file,
+ &conf->psk_identity_hint)
!= NGX_OK)
{
return NGX_CONF_ERROR;
diff -r 00a1466fe33b -r d47b57ebf82c src/http/modules/ngx_http_ssl_module.h
--- a/src/http/modules/ngx_http_ssl_module.h Fri Jul 28 13:18:15 2017 -0500
+++ b/src/http/modules/ngx_http_ssl_module.h Fri Jul 28 13:19:03 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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