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-rw-r--r-- | src/faudit/network.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/faudit/network.c b/src/faudit/network.c new file mode 100644 index 000000000..697b1d1fb --- /dev/null +++ b/src/faudit/network.c | |||
@@ -0,0 +1,52 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2014-2016 Firejail Authors | ||
3 | * | ||
4 | * This file is part of firejail project | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation; either version 2 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * This program is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * GNU General Public License for more details. | ||
15 | * | ||
16 | * You should have received a copy of the GNU General Public License along | ||
17 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | ||
19 | */ | ||
20 | #include "faudit.h" | ||
21 | #include <sys/socket.h> | ||
22 | #include <arpa/inet.h> | ||
23 | |||
24 | void check_ssh(void) { | ||
25 | printf("INFO: looking for ssh servers running on localhost\n"); | ||
26 | |||
27 | // open socket | ||
28 | int sock = socket(AF_INET, SOCK_STREAM, 0); | ||
29 | if (sock == -1) { | ||
30 | printf("Error: cannot create an IPv4 socket\n"); | ||
31 | return; | ||
32 | } | ||
33 | |||
34 | // connect to localhost | ||
35 | struct sockaddr_in server; | ||
36 | server.sin_addr.s_addr = inet_addr("127.0.0.1"); | ||
37 | server.sin_family = AF_INET; | ||
38 | server.sin_port = htons(22); | ||
39 | |||
40 | if (connect(sock , (struct sockaddr *)&server , sizeof(server)) < 0) | ||
41 | printf("GOOD: SSH server not available on localhost\n"); | ||
42 | else { | ||
43 | printf("MAYBE: an SSH server is accessible on localhost\n"); | ||
44 | printf("It could be a good idea to create a new network namespace using \"--net=none\" or \"--net=eth0\".\n"); | ||
45 | } | ||
46 | |||
47 | close(sock); | ||
48 | } | ||
49 | |||
50 | void network_test(void) { | ||
51 | check_ssh(); | ||
52 | } | ||