/src/suricata7/src/app-layer-http2.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* Copyright (C) 2020 Open Information Security Foundation |
2 | | * |
3 | | * You can copy, redistribute or modify this Program under the terms of |
4 | | * the GNU General Public License version 2 as published by the Free |
5 | | * Software Foundation. |
6 | | * |
7 | | * This program is distributed in the hope that it will be useful, |
8 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
9 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
10 | | * GNU General Public License for more details. |
11 | | * |
12 | | * You should have received a copy of the GNU General Public License |
13 | | * version 2 along with this program; if not, write to the Free Software |
14 | | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
15 | | * 02110-1301, USA. |
16 | | */ |
17 | | |
18 | | /** |
19 | | * \file |
20 | | * |
21 | | * \author Philippe Antoine <p.antoine@catenacyber.fr> |
22 | | * |
23 | | * Parser for HTTP2, RFC 7540 |
24 | | */ |
25 | | |
26 | | #include "suricata-common.h" |
27 | | #include "stream.h" |
28 | | #include "conf.h" |
29 | | |
30 | | #include "util-unittest.h" |
31 | | |
32 | | #include "app-layer-detect-proto.h" |
33 | | #include "app-layer-parser.h" |
34 | | |
35 | | #include "app-layer-htp.h" |
36 | | #include "app-layer-http2.h" |
37 | | #include "rust.h" |
38 | | |
39 | | static int HTTP2RegisterPatternsForProtocolDetection(void) |
40 | 74 | { |
41 | | /* Using the 24 bytes pattern makes AppLayerTest09 fail/leak |
42 | | * The complete pattern is "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" |
43 | | */ |
44 | 74 | if (AppLayerProtoDetectPMRegisterPatternCI(IPPROTO_TCP, ALPROTO_HTTP2, |
45 | 74 | "PRI * HTTP/2.0\r\n", |
46 | 74 | 16, 0, STREAM_TOSERVER) < 0) |
47 | 0 | { |
48 | 0 | return -1; |
49 | 0 | } |
50 | 74 | return 0; |
51 | 74 | } |
52 | | |
53 | | static StreamingBufferConfig sbcfg = STREAMING_BUFFER_CONFIG_INITIALIZER; |
54 | | static SuricataFileContext sfc = { &sbcfg }; |
55 | | |
56 | | void RegisterHTTP2Parsers(void) |
57 | 74 | { |
58 | 74 | const char *proto_name = "http2"; |
59 | | |
60 | 74 | if (AppLayerProtoDetectConfProtoDetectionEnabledDefault("tcp", proto_name, true)) { |
61 | 74 | AppLayerProtoDetectRegisterProtocol(ALPROTO_HTTP2, proto_name); |
62 | 74 | if (HTTP2RegisterPatternsForProtocolDetection() < 0) |
63 | 0 | return; |
64 | | |
65 | 74 | rs_http2_init(&sfc); |
66 | 74 | rs_http2_register_parser(); |
67 | 74 | } |
68 | | |
69 | | #ifdef UNITTESTS |
70 | | //TODOask HTTP2ParserRegisterTests(); |
71 | | #endif |
72 | 74 | } |
73 | | |
74 | | void HTTP2MimicHttp1Request(void *alstate_orig, void *h2s) |
75 | 3 | { |
76 | 3 | htp_tx_t *h1tx = HtpGetTxForH2(alstate_orig); |
77 | 3 | if (h2s == NULL || h1tx == NULL) { |
78 | 0 | return; |
79 | 0 | } |
80 | 3 | if (h1tx->request_method == NULL) { |
81 | | // may happen if we only got the reply, not the HTTP1 request |
82 | 0 | return; |
83 | 0 | } |
84 | | // else |
85 | 3 | rs_http2_tx_set_method(h2s, bstr_ptr(h1tx->request_method), bstr_len(h1tx->request_method)); |
86 | 3 | if (h1tx->request_uri != NULL) { |
87 | | // A request line without spaces gets interpreted as a request_method |
88 | | // and has request_uri=NULL |
89 | 3 | rs_http2_tx_set_uri(h2s, bstr_ptr(h1tx->request_uri), bstr_len(h1tx->request_uri)); |
90 | 3 | } |
91 | 3 | size_t nbheaders = htp_table_size(h1tx->request_headers); |
92 | 18 | for (size_t i = 0; i < nbheaders; i++) { |
93 | 15 | htp_header_t *h = htp_table_get_index(h1tx->request_headers, i, NULL); |
94 | 15 | rs_http2_tx_add_header( |
95 | 15 | h2s, bstr_ptr(h->name), bstr_len(h->name), bstr_ptr(h->value), bstr_len(h->value)); |
96 | 15 | } |
97 | 3 | } |