1 files changed, 97 insertions, 0 deletions
diff --git a/src/app-layer-http2.c b/src/app-layer-http2.c
new file mode 100644
index 0000000..dd0b3ec
--- /dev/null
+++ b/src/app-layer-http2.c
@@ -0,0 +1,97 @@
+/* Copyright (C) 2020 Open Information Security Foundation
+ *
+ * You can copy, redistribute or modify this Program under the terms of
+ * the GNU General Public License version 2 as published by the Free
+ * Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+/**
+ * \file
+ *
+ * \author Philippe Antoine <p.antoine@catenacyber.fr>
+ *
+ * Parser for HTTP2, RFC 7540
+ */
+
+#include "suricata-common.h"
+#include "stream.h"
+#include "conf.h"
+
+#include "util-unittest.h"
+
+#include "app-layer-detect-proto.h"
+#include "app-layer-parser.h"
+
+#include "app-layer-htp.h"
+#include "app-layer-http2.h"
+#include "rust.h"
+
+static int HTTP2RegisterPatternsForProtocolDetection(void)
+{
+    /* Using the 24 bytes pattern makes AppLayerTest09 fail/leak
+     * The complete pattern is "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
+     */
+    if (AppLayerProtoDetectPMRegisterPatternCI(IPPROTO_TCP, ALPROTO_HTTP2,
+                                               "PRI * HTTP/2.0\r\n",
+                                               16, 0, STREAM_TOSERVER) < 0)
+    {
+        return -1;
+    }
+    return 0;
+}
+
+static StreamingBufferConfig sbcfg = STREAMING_BUFFER_CONFIG_INITIALIZER;
+static SuricataFileContext sfc = { &sbcfg };
+
+void RegisterHTTP2Parsers(void)
+{
+    const char *proto_name = "http2";
+
+    if (AppLayerProtoDetectConfProtoDetectionEnabledDefault("tcp", proto_name, true)) {
+        AppLayerProtoDetectRegisterProtocol(ALPROTO_HTTP2, proto_name);
+        if (HTTP2RegisterPatternsForProtocolDetection() < 0)
+            return;
+
+        rs_http2_init(&sfc);
+        rs_http2_register_parser();
+    }
+
+#ifdef UNITTESTS
+    //TODOask HTTP2ParserRegisterTests();
+#endif
+}
+
+void HTTP2MimicHttp1Request(void *alstate_orig, void *h2s)
+{
+    htp_tx_t *h1tx = HtpGetTxForH2(alstate_orig);
+    if (h2s == NULL || h1tx == NULL) {
+        return;
+    }
+    if (h1tx->request_method == NULL) {
+        // may happen if we only got the reply, not the HTTP1 request
+        return;
+    }
+    // else
+    rs_http2_tx_set_method(h2s, bstr_ptr(h1tx->request_method), bstr_len(h1tx->request_method));
+    if (h1tx->request_uri != NULL) {
+        // A request line without spaces gets interpreted as a request_method
+        // and has request_uri=NULL
+        rs_http2_tx_set_uri(h2s, bstr_ptr(h1tx->request_uri), bstr_len(h1tx->request_uri));
+    }
+    size_t nbheaders = htp_table_size(h1tx->request_headers);
+    for (size_t i = 0; i < nbheaders; i++) {
+        htp_header_t *h = htp_table_get_index(h1tx->request_headers, i, NULL);
+        rs_http2_tx_add_header(
+                h2s, bstr_ptr(h->name), bstr_len(h->name), bstr_ptr(h->value), bstr_len(h->value));
+    }
+}