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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 06:33:50 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 06:33:50 +0000
commitfe39ffb8b90ae4e002ed73fe98617cd590abb467 (patch)
treeb80e5956907d8aeaaffe4e4f0c068c0e6157ce8b /modules/http2/h2_headers.c
parentInitial commit. (diff)
downloadapache2-fe39ffb8b90ae4e002ed73fe98617cd590abb467.tar.xz
apache2-fe39ffb8b90ae4e002ed73fe98617cd590abb467.zip
Adding upstream version 2.4.56.upstream/2.4.56
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'modules/http2/h2_headers.c')
-rw-r--r--modules/http2/h2_headers.c207
1 files changed, 207 insertions, 0 deletions
diff --git a/modules/http2/h2_headers.c b/modules/http2/h2_headers.c
new file mode 100644
index 0000000..cbc7b01
--- /dev/null
+++ b/modules/http2/h2_headers.c
@@ -0,0 +1,207 @@
+/* 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 <assert.h>
+#include <stdio.h>
+
+#include <apr_strings.h>
+
+#include <httpd.h>
+#include <http_core.h>
+#include <http_log.h>
+#include <util_time.h>
+
+#include <nghttp2/nghttp2.h>
+
+#include "h2_private.h"
+#include "h2_protocol.h"
+#include "h2_config.h"
+#include "h2_util.h"
+#include "h2_request.h"
+#include "h2_headers.h"
+
+#if !AP_HAS_RESPONSE_BUCKETS
+
+static int is_unsafe(server_rec *s)
+{
+ core_server_config *conf = ap_get_core_module_config(s->module_config);
+ return (conf->http_conformance == AP_HTTP_CONFORMANCE_UNSAFE);
+}
+
+typedef struct {
+ apr_bucket_refcount refcount;
+ h2_headers *headers;
+} h2_bucket_headers;
+
+static apr_status_t bucket_read(apr_bucket *b, const char **str,
+ apr_size_t *len, apr_read_type_e block)
+{
+ (void)b;
+ (void)block;
+ *str = NULL;
+ *len = 0;
+ return APR_SUCCESS;
+}
+
+apr_bucket * h2_bucket_headers_make(apr_bucket *b, h2_headers *r)
+{
+ h2_bucket_headers *br;
+
+ br = apr_bucket_alloc(sizeof(*br), b->list);
+ br->headers = r;
+
+ b = apr_bucket_shared_make(b, br, 0, 0);
+ b->type = &h2_bucket_type_headers;
+ b->length = 0;
+
+ return b;
+}
+
+apr_bucket * h2_bucket_headers_create(apr_bucket_alloc_t *list,
+ h2_headers *r)
+{
+ apr_bucket *b = apr_bucket_alloc(sizeof(*b), list);
+
+ APR_BUCKET_INIT(b);
+ b->free = apr_bucket_free;
+ b->list = list;
+ b = h2_bucket_headers_make(b, r);
+ return b;
+}
+
+h2_headers *h2_bucket_headers_get(apr_bucket *b)
+{
+ if (H2_BUCKET_IS_HEADERS(b)) {
+ return ((h2_bucket_headers *)b->data)->headers;
+ }
+ return NULL;
+}
+
+const apr_bucket_type_t h2_bucket_type_headers = {
+ "H2HEADERS", 5, APR_BUCKET_METADATA,
+ apr_bucket_destroy_noop,
+ bucket_read,
+ apr_bucket_setaside_noop,
+ apr_bucket_split_notimpl,
+ apr_bucket_shared_copy
+};
+
+apr_bucket *h2_bucket_headers_clone(apr_bucket *b, apr_pool_t *pool,
+ apr_bucket_alloc_t *list)
+{
+ h2_headers *hdrs = ((h2_bucket_headers *)b->data)->headers;
+ return h2_bucket_headers_create(list, h2_headers_clone(pool, hdrs));
+}
+
+
+h2_headers *h2_headers_create(int status, const apr_table_t *headers_in,
+ const apr_table_t *notes, apr_off_t raw_bytes,
+ apr_pool_t *pool)
+{
+ h2_headers *headers = apr_pcalloc(pool, sizeof(h2_headers));
+ headers->status = status;
+ headers->headers = (headers_in? apr_table_clone(pool, headers_in)
+ : apr_table_make(pool, 5));
+ headers->notes = (notes? apr_table_clone(pool, notes)
+ : apr_table_make(pool, 5));
+ return headers;
+}
+
+static int add_header_lengths(void *ctx, const char *name, const char *value)
+{
+ apr_size_t *plen = ctx;
+ *plen += strlen(name) + strlen(value);
+ return 1;
+}
+
+apr_size_t h2_headers_length(h2_headers *headers)
+{
+ apr_size_t len = 0;
+ apr_table_do(add_header_lengths, &len, headers->headers, NULL);
+ return len;
+}
+
+apr_size_t h2_bucket_headers_headers_length(apr_bucket *b)
+{
+ h2_headers *h = h2_bucket_headers_get(b);
+ return h? h2_headers_length(h) : 0;
+}
+
+h2_headers *h2_headers_rcreate(request_rec *r, int status,
+ const apr_table_t *header, apr_pool_t *pool)
+{
+ h2_headers *headers = h2_headers_create(status, header, r->notes, 0, pool);
+ if (headers->status == HTTP_FORBIDDEN) {
+ request_rec *r_prev;
+ for (r_prev = r; r_prev != NULL; r_prev = r_prev->prev) {
+ const char *cause = apr_table_get(r_prev->notes, "ssl-renegotiate-forbidden");
+ if (cause) {
+ /* This request triggered a TLS renegotiation that is not allowed
+ * in HTTP/2. Tell the client that it should use HTTP/1.1 for this.
+ */
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, headers->status, r,
+ APLOGNO(10399)
+ "h2_headers(%ld): renegotiate forbidden, cause: %s",
+ (long)r->connection->id, cause);
+ headers->status = H2_ERR_HTTP_1_1_REQUIRED;
+ break;
+ }
+ }
+ }
+ if (is_unsafe(r->server)) {
+ apr_table_setn(headers->notes, H2_HDR_CONFORMANCE, H2_HDR_CONFORMANCE_UNSAFE);
+ }
+ if (h2_config_rgeti(r, H2_CONF_PUSH) == 0 && h2_config_sgeti(r->server, H2_CONF_PUSH) != 0) {
+ apr_table_setn(headers->notes, H2_PUSH_MODE_NOTE, "0");
+ }
+ return headers;
+}
+
+h2_headers *h2_headers_copy(apr_pool_t *pool, h2_headers *h)
+{
+ return h2_headers_create(h->status, h->headers, h->notes, h->raw_bytes, pool);
+}
+
+h2_headers *h2_headers_clone(apr_pool_t *pool, h2_headers *h)
+{
+ return h2_headers_create(h->status, h->headers, h->notes, h->raw_bytes, pool);
+}
+
+h2_headers *h2_headers_die(apr_status_t type,
+ const h2_request *req, apr_pool_t *pool)
+{
+ h2_headers *headers;
+ char *date;
+
+ headers = apr_pcalloc(pool, sizeof(h2_headers));
+ headers->status = (type >= 200 && type < 600)? type : 500;
+ headers->headers = apr_table_make(pool, 5);
+ headers->notes = apr_table_make(pool, 5);
+
+ date = apr_palloc(pool, APR_RFC822_DATE_LEN);
+ ap_recent_rfc822_date(date, req? req->request_time : apr_time_now());
+ apr_table_setn(headers->headers, "Date", date);
+ apr_table_setn(headers->headers, "Server", ap_get_server_banner());
+
+ return headers;
+}
+
+int h2_headers_are_final_response(h2_headers *headers)
+{
+ return headers->status >= 200;
+}
+
+#endif /* !AP_HAS_RESPONSE_BUCKETS */