diff options
-rw-r--r-- | src/faudit/faudit.h | 37 | ||||
-rw-r--r-- | src/faudit/main.c | 30 | ||||
-rw-r--r-- | src/faudit/pid.c | 89 |
3 files changed, 154 insertions, 2 deletions
diff --git a/src/faudit/faudit.h b/src/faudit/faudit.h new file mode 100644 index 000000000..9c001c285 --- /dev/null +++ b/src/faudit/faudit.h | |||
@@ -0,0 +1,37 @@ | |||
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 | |||
21 | #ifndef FAUDIT_H | ||
22 | #define FAUDIT_H | ||
23 | #include <stdio.h> | ||
24 | #include <stdlib.h> | ||
25 | #include <string.h> | ||
26 | #include <unistd.h> | ||
27 | #include <sys/types.h> | ||
28 | #include <sys/stat.h> | ||
29 | #include <sys/mount.h> | ||
30 | #include <assert.h> | ||
31 | |||
32 | #define errExit(msg) do { char msgout[500]; sprintf(msgout, "Error %s:%s(%d)", msg, __FUNCTION__, __LINE__); perror(msgout); exit(1);} while (0) | ||
33 | |||
34 | // pid.c | ||
35 | void pid(void); | ||
36 | |||
37 | #endif \ No newline at end of file | ||
diff --git a/src/faudit/main.c b/src/faudit/main.c index e4536d20b..d90eb1c0b 100644 --- a/src/faudit/main.c +++ b/src/faudit/main.c | |||
@@ -1,5 +1,31 @@ | |||
1 | #include <stdio.h> | 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" | ||
2 | 21 | ||
3 | int main(int argc, char **argv) { | 22 | int main(int argc, char **argv) { |
4 | printf("faudit running\n"); | 23 | printf("FAUDIT: Firejail audit started\n"); |
24 | |||
25 | // check pid namespace | ||
26 | pid(); | ||
27 | |||
28 | printf("FAUDIT: Firejail audit ended\n"); | ||
29 | return 0; | ||
30 | |||
5 | } | 31 | } |
diff --git a/src/faudit/pid.c b/src/faudit/pid.c new file mode 100644 index 000000000..861324255 --- /dev/null +++ b/src/faudit/pid.c | |||
@@ -0,0 +1,89 @@ | |||
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 | |||
22 | void pid(void) { | ||
23 | char *kern_proc[] = { | ||
24 | "kthreadd", | ||
25 | "ksoftirqd", | ||
26 | "kworker", | ||
27 | "rcu_sched", | ||
28 | "rcu_bh", | ||
29 | NULL // NULL terminated list | ||
30 | }; | ||
31 | int i; | ||
32 | |||
33 | // look at the first 10 processes | ||
34 | for (i = 1; i <= 10; i++) { | ||
35 | struct stat s; | ||
36 | char *fname; | ||
37 | if (asprintf(&fname, "/proc/%d/comm", i) == -1) | ||
38 | errExit("asprintf"); | ||
39 | if (stat(fname, &s) == -1) { | ||
40 | free(fname); | ||
41 | continue; | ||
42 | } | ||
43 | |||
44 | // open file | ||
45 | /* coverity[toctou] */ | ||
46 | FILE *fp = fopen(fname, "r"); | ||
47 | if (!fp) { | ||
48 | fprintf(stderr, "Warning: cannot open %s\n", fname); | ||
49 | free(fname); | ||
50 | continue; | ||
51 | } | ||
52 | |||
53 | // read file | ||
54 | char buf[100]; | ||
55 | if (fgets(buf, 10, fp) == NULL) { | ||
56 | fprintf(stderr, "Warning: cannot read %s\n", fname); | ||
57 | fclose(fp); | ||
58 | free(fname); | ||
59 | continue; | ||
60 | } | ||
61 | // clean /n | ||
62 | char *ptr; | ||
63 | if ((ptr = strchr(buf, '\n')) != NULL) | ||
64 | *ptr = '\0'; | ||
65 | |||
66 | // check process name against the kernel list | ||
67 | int j = 0; | ||
68 | while (kern_proc[j] != NULL) { | ||
69 | if (strncmp(buf, kern_proc[j], strlen(kern_proc[j])) == 0) { | ||
70 | fclose(fp); | ||
71 | free(fname); | ||
72 | printf("FAUDIT: Process PID %d, not running in a PID namespace\n", getpid()); | ||
73 | return; | ||
74 | } | ||
75 | j++; | ||
76 | } | ||
77 | |||
78 | fclose(fp); | ||
79 | free(fname); | ||
80 | } | ||
81 | |||
82 | |||
83 | printf("FAUDIT: Process PID %d, running in a PID namespace\n", getpid()); | ||
84 | |||
85 | // try to guess the type of container/sandbox | ||
86 | char *str = getenv("container"); | ||
87 | if (str) | ||
88 | printf("FAUDIT: Container/sandbox: %s\n", str); | ||
89 | } | ||