diff options
Diffstat (limited to 'modules/http2/h2_alt_svc.c')
| -rw-r--r-- | modules/http2/h2_alt_svc.c | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/modules/http2/h2_alt_svc.c b/modules/http2/h2_alt_svc.c deleted file mode 100644 index 295a16d..0000000 --- a/modules/http2/h2_alt_svc.c +++ /dev/null @@ -1,131 +0,0 @@ -/* Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed with - * this work for additional information regarding copyright ownership. - * The ASF licenses this file to You under the Apache License, Version 2.0 - * (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <apr_strings.h> -#include <httpd.h> -#include <http_core.h> -#include <http_connection.h> -#include <http_protocol.h> -#include <http_log.h> - -#include "h2_private.h" -#include "h2_alt_svc.h" -#include "h2_ctx.h" -#include "h2_config.h" -#include "h2_h2.h" -#include "h2_util.h" - -static int h2_alt_svc_handler(request_rec *r); - -void h2_alt_svc_register_hooks(void) -{ - ap_hook_post_read_request(h2_alt_svc_handler, NULL, NULL, APR_HOOK_MIDDLE); -} - -/** - * Parse an Alt-Svc specifier as described in "HTTP Alternative Services" - * (https://tools.ietf.org/html/draft-ietf-httpbis-alt-svc-04) - * with the following changes: - * - do not percent encode token values - * - do not use quotation marks - */ -h2_alt_svc *h2_alt_svc_parse(const char *s, apr_pool_t *pool) -{ - const char *sep = ap_strchr_c(s, '='); - if (sep) { - const char *alpn = apr_pstrmemdup(pool, s, sep - s); - const char *host = NULL; - int port = 0; - s = sep + 1; - sep = ap_strchr_c(s, ':'); /* mandatory : */ - if (sep) { - if (sep != s) { /* optional host */ - host = apr_pstrmemdup(pool, s, sep - s); - } - s = sep + 1; - if (*s) { /* must be a port number */ - port = (int)apr_atoi64(s); - if (port > 0 && port < (0x1 << 16)) { - h2_alt_svc *as = apr_pcalloc(pool, sizeof(*as)); - as->alpn = alpn; - as->host = host; - as->port = port; - return as; - } - } - } - } - return NULL; -} - -#define h2_alt_svc_IDX(list, i) ((h2_alt_svc**)(list)->elts)[i] - -static int h2_alt_svc_handler(request_rec *r) -{ - const h2_config *cfg; - int i; - - if (r->connection->keepalives > 0) { - /* Only announce Alt-Svc on the first response */ - return DECLINED; - } - - if (h2_ctx_rget(r)) { - return DECLINED; - } - - cfg = h2_config_sget(r->server); - if (r->hostname && cfg && cfg->alt_svcs && cfg->alt_svcs->nelts > 0) { - const char *alt_svc_used = apr_table_get(r->headers_in, "Alt-Svc-Used"); - if (!alt_svc_used) { - /* We have alt-svcs defined and client is not already using - * one, announce the services that were configured and match. - * The security of this connection determines if we allow - * other host names or ports only. - */ - const char *alt_svc = ""; - const char *svc_ma = ""; - int secure = h2_h2_is_tls(r->connection); - int ma = h2_config_geti(cfg, H2_CONF_ALT_SVC_MAX_AGE); - if (ma >= 0) { - svc_ma = apr_psprintf(r->pool, "; ma=%d", ma); - } - ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(03043) - "h2_alt_svc: announce %s for %s:%d", - (secure? "secure" : "insecure"), - r->hostname, (int)r->server->port); - for (i = 0; i < cfg->alt_svcs->nelts; ++i) { - h2_alt_svc *as = h2_alt_svc_IDX(cfg->alt_svcs, i); - const char *ahost = as->host; - if (ahost && !apr_strnatcasecmp(ahost, r->hostname)) { - ahost = NULL; - } - if (secure || !ahost) { - alt_svc = apr_psprintf(r->pool, "%s%s%s=\"%s:%d\"%s", - alt_svc, - (*alt_svc? ", " : ""), as->alpn, - ahost? ahost : "", as->port, - svc_ma); - } - } - if (*alt_svc) { - apr_table_setn(r->headers_out, "Alt-Svc", alt_svc); - } - } - } - - return DECLINED; -} |