/src/suricata7/rust/src/ssh/detect.rs
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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 | | use super::ssh::SSHTransaction; |
19 | | use crate::core::Direction; |
20 | | use std::ptr; |
21 | | |
22 | | #[no_mangle] |
23 | 13 | pub unsafe extern "C" fn rs_ssh_tx_get_protocol( |
24 | 13 | tx: *mut std::os::raw::c_void, buffer: *mut *const u8, buffer_len: *mut u32, direction: u8, |
25 | 13 | ) -> u8 { |
26 | 13 | let tx = cast_pointer!(tx, SSHTransaction); |
27 | 13 | match direction.into() { |
28 | | Direction::ToServer => { |
29 | 13 | let m = &tx.cli_hdr.protover; |
30 | 13 | if !m.is_empty() { |
31 | 13 | *buffer = m.as_ptr(); |
32 | 13 | *buffer_len = m.len() as u32; |
33 | 13 | return 1; |
34 | 0 | } |
35 | | } |
36 | | Direction::ToClient => { |
37 | 0 | let m = &tx.srv_hdr.protover; |
38 | 0 | if !m.is_empty() { |
39 | 0 | *buffer = m.as_ptr(); |
40 | 0 | *buffer_len = m.len() as u32; |
41 | 0 | return 1; |
42 | 0 | } |
43 | | } |
44 | | } |
45 | 0 | *buffer = ptr::null(); |
46 | 0 | *buffer_len = 0; |
47 | | |
48 | 0 | return 0; |
49 | 13 | } |
50 | | |
51 | | #[no_mangle] |
52 | 3 | pub unsafe extern "C" fn rs_ssh_tx_get_software( |
53 | 3 | tx: *mut std::os::raw::c_void, buffer: *mut *const u8, buffer_len: *mut u32, direction: u8, |
54 | 3 | ) -> u8 { |
55 | 3 | let tx = cast_pointer!(tx, SSHTransaction); |
56 | 3 | match direction.into() { |
57 | | Direction::ToServer => { |
58 | 2 | let m = &tx.cli_hdr.swver; |
59 | 2 | if !m.is_empty() { |
60 | 2 | *buffer = m.as_ptr(); |
61 | 2 | *buffer_len = m.len() as u32; |
62 | 2 | return 1; |
63 | 0 | } |
64 | | } |
65 | | Direction::ToClient => { |
66 | 1 | let m = &tx.srv_hdr.swver; |
67 | 1 | if !m.is_empty() { |
68 | 1 | *buffer = m.as_ptr(); |
69 | 1 | *buffer_len = m.len() as u32; |
70 | 1 | return 1; |
71 | 0 | } |
72 | | } |
73 | | } |
74 | 0 | *buffer = ptr::null(); |
75 | 0 | *buffer_len = 0; |
76 | | |
77 | 0 | return 0; |
78 | 3 | } |
79 | | |
80 | | #[no_mangle] |
81 | 35 | pub unsafe extern "C" fn rs_ssh_tx_get_hassh( |
82 | 35 | tx: *mut std::os::raw::c_void, |
83 | 35 | buffer: *mut *const u8, |
84 | 35 | buffer_len: *mut u32, |
85 | 35 | direction: u8, |
86 | 35 | ) -> u8 { |
87 | 35 | let tx = cast_pointer!(tx, SSHTransaction); |
88 | 35 | match direction.into() { |
89 | | Direction::ToServer => { |
90 | 31 | let m = &tx.cli_hdr.hassh; |
91 | 31 | if !m.is_empty() { |
92 | 2 | *buffer = m.as_ptr(); |
93 | 2 | *buffer_len = m.len() as u32; |
94 | 2 | return 1; |
95 | 29 | } |
96 | | } |
97 | | Direction::ToClient => { |
98 | 4 | let m = &tx.srv_hdr.hassh; |
99 | 4 | if !m.is_empty() { |
100 | 3 | *buffer = m.as_ptr(); |
101 | 3 | *buffer_len = m.len() as u32; |
102 | 3 | return 1; |
103 | 1 | } |
104 | | } |
105 | | } |
106 | 30 | *buffer = ptr::null(); |
107 | 30 | *buffer_len = 0; |
108 | | |
109 | 30 | return 0; |
110 | 35 | } |
111 | | |
112 | | #[no_mangle] |
113 | 8 | pub unsafe extern "C" fn rs_ssh_tx_get_hassh_string( |
114 | 8 | tx: *mut std::os::raw::c_void, |
115 | 8 | buffer: *mut *const u8, |
116 | 8 | buffer_len: *mut u32, |
117 | 8 | direction: u8, |
118 | 8 | ) -> u8 { |
119 | 8 | let tx = cast_pointer!(tx, SSHTransaction); |
120 | 8 | match direction.into() { |
121 | | Direction::ToServer => { |
122 | 4 | let m = &tx.cli_hdr.hassh_string; |
123 | 4 | if !m.is_empty() { |
124 | 0 | *buffer = m.as_ptr(); |
125 | 0 | *buffer_len = m.len() as u32; |
126 | 0 | return 1; |
127 | 4 | } |
128 | | } |
129 | | Direction::ToClient => { |
130 | 4 | let m = &tx.srv_hdr.hassh_string; |
131 | 4 | if !m.is_empty() { |
132 | 3 | *buffer = m.as_ptr(); |
133 | 3 | *buffer_len = m.len() as u32; |
134 | 3 | return 1; |
135 | 1 | } |
136 | | } |
137 | | } |
138 | 5 | *buffer = ptr::null(); |
139 | 5 | *buffer_len = 0; |
140 | | |
141 | 5 | return 0; |
142 | 8 | } |