46 lines
1.5 KiB
Diff
46 lines
1.5 KiB
Diff
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diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
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index 684fabd..404aa77 100644
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--- a/src/http/ngx_http_request.c
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+++ b/src/http/ngx_http_request.c
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@@ -921,6 +921,31 @@ ngx_http_ssl_servername(ngx_ssl_conn_t *ssl_conn, int *ad, void *arg)
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goto done;
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}
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+ sscf = ngx_http_get_module_srv_conf(cscf->ctx, ngx_http_ssl_module);
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+
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+#if (defined TLS1_3_VERSION \
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+ && !defined LIBRESSL_VERSION_NUMBER && !defined OPENSSL_IS_BORINGSSL)
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+
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+ /*
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+ * SSL_SESSION_get0_hostname() is only available in OpenSSL 1.1.1+,
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+ * but servername being negotiated in every TLSv1.3 handshake
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+ * is only returned in OpenSSL 1.1.1+ as well
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+ */
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+
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+ if (sscf->verify) {
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+ const char *hostname;
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+
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+ hostname = SSL_SESSION_get0_hostname(SSL_get0_session(ssl_conn));
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+
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+ if (hostname != NULL && ngx_strcmp(hostname, servername) != 0) {
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+ c->ssl->handshake_rejected = 1;
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+ *ad = SSL_AD_ACCESS_DENIED;
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+ return SSL_TLSEXT_ERR_ALERT_FATAL;
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+ }
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+ }
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+
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+#endif
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+
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hc->ssl_servername = ngx_palloc(c->pool, sizeof(ngx_str_t));
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if (hc->ssl_servername == NULL) {
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goto error;
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@@ -934,8 +959,6 @@ ngx_http_ssl_servername(ngx_ssl_conn_t *ssl_conn, int *ad, void *arg)
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ngx_set_connection_log(c, clcf->error_log);
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- sscf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_ssl_module);
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-
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c->ssl->buffer_size = sscf->buffer_size;
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if (sscf->ssl.ctx) {
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