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author | netblue30 <netblue30@yahoo.com> | 2015-08-08 19:12:30 -0400 |
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committer | netblue30 <netblue30@yahoo.com> | 2015-08-08 19:12:30 -0400 |
commit | 1379851360349d6617ad32944a25ee5e2bb74fc2 (patch) | |
tree | f69b48e90708bfa3c2723d5a27ed3e024c827b43 /src/firemon/arp.c | |
parent | delete files (diff) | |
download | firejail-1379851360349d6617ad32944a25ee5e2bb74fc2.tar.gz firejail-1379851360349d6617ad32944a25ee5e2bb74fc2.tar.zst firejail-1379851360349d6617ad32944a25ee5e2bb74fc2.zip |
Baseline firejail 0.9.28
Diffstat (limited to 'src/firemon/arp.c')
-rw-r--r-- | src/firemon/arp.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/src/firemon/arp.c b/src/firemon/arp.c new file mode 100644 index 000000000..71beb0630 --- /dev/null +++ b/src/firemon/arp.c | |||
@@ -0,0 +1,99 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2014, 2015 netblue30 (netblue30@yahoo.com) | ||
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 "firemon.h" | ||
21 | #define MAXBUF 4096 | ||
22 | |||
23 | static void print_arp(const char *fname) { | ||
24 | FILE *fp = fopen(fname, "r"); | ||
25 | if (!fp) | ||
26 | return; | ||
27 | |||
28 | printf(" ARP Table:\n"); | ||
29 | char buf[MAXBUF]; | ||
30 | while (fgets(buf, MAXBUF, fp)) { | ||
31 | // remove blanks, \n | ||
32 | char *ptr = buf; | ||
33 | while (*ptr == ' ' || *ptr == '\t') | ||
34 | ptr++; | ||
35 | char *start = ptr; | ||
36 | if (*start == '\0') | ||
37 | continue; | ||
38 | ptr = strchr(ptr, '\n'); | ||
39 | if (ptr) | ||
40 | *ptr = '\0'; | ||
41 | |||
42 | // remove table header | ||
43 | //IP address HW type Flags HW address Mask Device | ||
44 | if (strncmp(start, "IP address", 10) == 0) | ||
45 | continue; | ||
46 | |||
47 | // extract data | ||
48 | char ip[64]; | ||
49 | char type[64]; | ||
50 | char flags[64]; | ||
51 | char mac[64]; | ||
52 | char mask[64]; | ||
53 | char device[64]; | ||
54 | int rv = sscanf(start, "%s %s %s %s %s %s\n", ip, type, flags, mac, mask, device); | ||
55 | if (rv != 6) | ||
56 | continue; | ||
57 | |||
58 | // destination ip | ||
59 | unsigned a, b, c, d; | ||
60 | if (sscanf(ip, "%u.%u.%u.%u", &a, &b, &c, &d) != 4 || a > 255 || b > 255 || c > 255 || d > 255) | ||
61 | continue; | ||
62 | uint32_t destip = a * 0x1000000 + b * 0x10000 + c * 0x100 + d; | ||
63 | if (strcmp(flags, "0x0") == 0) | ||
64 | printf(" %d.%d.%d.%d dev %s FAILED\n", | ||
65 | PRINT_IP(destip), device); | ||
66 | else | ||
67 | printf(" %d.%d.%d.%d dev %s lladdr %s REACHABLE\n", | ||
68 | PRINT_IP(destip), device, mac); | ||
69 | } | ||
70 | |||
71 | fclose(fp); | ||
72 | |||
73 | } | ||
74 | |||
75 | void arp(pid_t pid) { | ||
76 | if (getuid() == 0) | ||
77 | firemon_drop_privs(); | ||
78 | |||
79 | pid_read(pid); | ||
80 | |||
81 | // print processes | ||
82 | int i; | ||
83 | for (i = 0; i < max_pids; i++) { | ||
84 | if (pids[i].level == 1) { | ||
85 | pid_print_list(i, 0); | ||
86 | int child = find_child(i); | ||
87 | if (child != -1) { | ||
88 | char *fname; | ||
89 | if (asprintf(&fname, "/proc/%d/net/arp", child) == -1) | ||
90 | errExit("asprintf"); | ||
91 | print_arp(fname); | ||
92 | free(fname); | ||
93 | printf("\n"); | ||
94 | } | ||
95 | } | ||
96 | } | ||
97 | } | ||
98 | |||
99 | |||