1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/*
Copyright (C) 2021 The Falco Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include <iostream>
#include <iomanip>
#include <getopt.h>
#include <signal.h>
#include <unistd.h>
#include <sinsp.h>
#include "util.h"
using namespace std;
static bool g_interrupted;
static const uint8_t g_backoff_timeout_secs = 2;
static void sigint_handler(int signum)
{
g_interrupted = true;
}
static void usage()
{
string usage = R"(Usage: sinsp-example [options]
Options:
-h, --help Print this page
-f <filter> Filter string for events (see https://falco.org/docs/rules/supported-fields/ for supported fields)
)";
cout << usage << endl;
}
//
// Sample filters:
// "evt.category=process or evt.category=net"
// "evt.dir=< and (evt.category=net or (evt.type=execveat or evt.type=execve or evt.type=clone or evt.type=fork or evt.type=vfork))"
//
int main(int argc, char **argv)
{
sinsp inspector;
// Parse configuration options.
static struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}
};
int op;
int long_index = 0;
string filter_string;
while((op = getopt_long(argc, argv,
"hr:s:f:",
long_options, &long_index)) != -1)
{
switch(op)
{
case 'h':
usage();
return EXIT_SUCCESS;
case 'f':
filter_string = optarg;
break;
default:
break;
}
}
signal(SIGINT, sigint_handler);
signal(SIGPIPE, sigint_handler);
inspector.open();
if(!filter_string.empty())
{
try
{
inspector.set_filter(filter_string);
}
catch(const sinsp_exception &e) {
cerr << "[ERROR] Unable to set filter: " << e.what() << endl;
}
}
while(!g_interrupted)
{
sinsp_evt* ev = NULL;
int32_t res = inspector.next(&ev);
if(SCAP_TIMEOUT == res)
{
continue;
}
else if(res != SCAP_SUCCESS)
{
cout << "[ERROR] " << inspector.getlasterr() << endl;
sleep(g_backoff_timeout_secs);
continue;
}
sinsp_threadinfo* thread = ev->get_thread_info();
if(thread)
{
string cmdline;
sinsp_threadinfo::populate_cmdline(cmdline, thread);
if(thread->is_main_thread())
{
string date_time;
sinsp_utils::ts_to_iso_8601(ev->get_ts(), &date_time);
bool is_host_proc = thread->m_container_id.empty();
cout << "[" << date_time << "]:["
<< (is_host_proc ? "HOST" : thread->m_container_id) << "]:";
cout << "[CAT=";
if(ev->get_category() == EC_PROCESS)
{
cout << "PROCESS]:";
}
else if(ev->get_category() == EC_NET)
{
cout << get_event_category(ev->get_category()) << "]:";
sinsp_fdinfo_t* fd_info = ev->get_fd_info();
// event subcategory should contain SC_NET if ipv4/ipv6
if(nullptr != fd_info && (fd_info->get_l4proto() != SCAP_L4_UNKNOWN && fd_info->get_l4proto() != SCAP_L4_NA))
{
cout << "[" << fd_info->tostring() << "]:";
}
}
else if(ev->get_category() == EC_IO_READ || ev->get_category() == EC_IO_WRITE)
{
cout << get_event_category(ev->get_category()) << "]:";
sinsp_fdinfo_t* fd_info = ev->get_fd_info();
if(nullptr != fd_info && (fd_info->get_l4proto() != SCAP_L4_UNKNOWN && fd_info->get_l4proto() != SCAP_L4_NA))
{
cout << "[" << fd_info->tostring() << "]:";
}
}
else
{
cout << get_event_category(ev->get_category()) << "]:";
}
sinsp_threadinfo *p_thr = thread->get_parent_thread();
int64_t parent_pid;
if(nullptr != p_thr)
{
parent_pid = p_thr->m_pid;
}
cout << "[PPID=" << parent_pid << "]:"
<< "[PID=" << thread->m_pid << "]:"
<< "[TYPE=" << get_event_type(ev->get_type()) << "]:"
<< "[EXE=" << thread->get_exepath() << "]:"
<< "[CMD=" << cmdline << "]"
<< endl;
}
}
else
{
cout << "[EVENT]:[" << get_event_category(ev->get_category()) << "]:"
<< ev->get_name() << endl;
}
}
return 0;
}
|
