Alexey Ivanov | cc01a9c | 2019-01-16 09:50:46 -0800 | [diff] [blame] | 1 | #!/usr/bin/python |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 2 | # |
jeromemarchand | 8b17dc3 | 2018-08-04 07:09:36 +0200 | [diff] [blame] | 3 | # sslsniff Captures data on read/recv or write/send functions of OpenSSL, |
| 4 | # GnuTLS and NSS |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 5 | # For Linux, uses BCC, eBPF. |
| 6 | # |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 7 | # USAGE: sslsniff.py [-h] [-p PID] [-u UID] [-x] [-c COMM] [-o] [-g] [-n] [-d] |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 8 | # [--hexdump] [--max-buffer-size SIZE] [-l] [--handshake] |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 9 | # |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 10 | # Licensed under the Apache License, Version 2.0 (the "License") |
| 11 | # |
| 12 | # 12-Aug-2016 Adrian Lopez Created this. |
| 13 | # 13-Aug-2016 Mark Drayton Fix SSL_Read |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 14 | # 17-Aug-2016 Adrian Lopez Capture GnuTLS and add options |
| 15 | # |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 16 | |
| 17 | from __future__ import print_function |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 18 | from bcc import BPF |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 19 | import argparse |
Matthias Hörmann | 1b7aab1 | 2020-07-03 13:54:24 +0200 | [diff] [blame] | 20 | import binascii |
| 21 | import textwrap |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 22 | import os.path |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 23 | |
| 24 | # arguments |
| 25 | examples = """examples: |
| 26 | ./sslsniff # sniff OpenSSL and GnuTLS functions |
| 27 | ./sslsniff -p 181 # sniff PID 181 only |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 28 | ./sslsniff -u 1000 # sniff only UID 1000 |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 29 | ./sslsniff -c curl # sniff curl command only |
| 30 | ./sslsniff --no-openssl # don't show OpenSSL calls |
| 31 | ./sslsniff --no-gnutls # don't show GnuTLS calls |
jeromemarchand | 8b17dc3 | 2018-08-04 07:09:36 +0200 | [diff] [blame] | 32 | ./sslsniff --no-nss # don't show NSS calls |
Matthias Hörmann | d40c3a7 | 2020-07-03 14:31:32 +0200 | [diff] [blame] | 33 | ./sslsniff --hexdump # show data as hex instead of trying to decode it as UTF-8 |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 34 | ./sslsniff -x # show process UID and TID |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 35 | ./sslsniff -l # show function latency |
| 36 | ./sslsniff -l --handshake # show SSL handshake latency |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 37 | ./sslsniff --extra-lib openssl:/path/libssl.so.1.1 # sniff extra library |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 38 | """ |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 39 | |
| 40 | |
| 41 | def ssllib_type(input_str): |
| 42 | valid_types = frozenset(['openssl', 'gnutls', 'nss']) |
| 43 | |
| 44 | try: |
| 45 | lib_type, lib_path = input_str.split(':', 1) |
| 46 | except ValueError: |
| 47 | raise argparse.ArgumentTypeError("Invalid SSL library param: %r" % input_str) |
| 48 | |
| 49 | if lib_type not in valid_types: |
| 50 | raise argparse.ArgumentTypeError("Invalid SSL library type: %r" % lib_type) |
| 51 | |
| 52 | if not os.path.isfile(lib_path): |
| 53 | raise argparse.ArgumentTypeError("Invalid library path: %r" % lib_path) |
| 54 | |
| 55 | return lib_type, lib_path |
| 56 | |
| 57 | |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 58 | parser = argparse.ArgumentParser( |
| 59 | description="Sniff SSL data", |
| 60 | formatter_class=argparse.RawDescriptionHelpFormatter, |
| 61 | epilog=examples) |
htbegin | 5ac5d6e | 2017-05-24 22:53:17 +0800 | [diff] [blame] | 62 | parser.add_argument("-p", "--pid", type=int, help="sniff this PID only.") |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 63 | parser.add_argument("-u", "--uid", type=int, default=None, |
| 64 | help="sniff this UID only.") |
| 65 | parser.add_argument("-x", "--extra", action="store_true", |
| 66 | help="show extra fields (UID, TID)") |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 67 | parser.add_argument("-c", "--comm", |
| 68 | help="sniff only commands matching string.") |
| 69 | parser.add_argument("-o", "--no-openssl", action="store_false", dest="openssl", |
| 70 | help="do not show OpenSSL calls.") |
| 71 | parser.add_argument("-g", "--no-gnutls", action="store_false", dest="gnutls", |
| 72 | help="do not show GnuTLS calls.") |
jeromemarchand | 8b17dc3 | 2018-08-04 07:09:36 +0200 | [diff] [blame] | 73 | parser.add_argument("-n", "--no-nss", action="store_false", dest="nss", |
| 74 | help="do not show NSS calls.") |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 75 | parser.add_argument('-d', '--debug', dest='debug', action='count', default=0, |
| 76 | help='debug mode.') |
Nathan Scott | cf0792f | 2018-02-02 16:56:50 +1100 | [diff] [blame] | 77 | parser.add_argument("--ebpf", action="store_true", |
| 78 | help=argparse.SUPPRESS) |
Matthias Hörmann | d91b31a | 2020-07-06 09:38:39 +0200 | [diff] [blame] | 79 | parser.add_argument("--hexdump", action="store_true", dest="hexdump", |
| 80 | help="show data as hexdump instead of trying to decode it as UTF-8") |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 81 | parser.add_argument('--max-buffer-size', type=int, default=8192, |
| 82 | help='Size of captured buffer') |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 83 | parser.add_argument("-l", "--latency", action="store_true", |
| 84 | help="show function latency") |
| 85 | parser.add_argument("--handshake", action="store_true", |
| 86 | help="show SSL handshake latency, enabled only if latency option is on.") |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 87 | parser.add_argument("--extra-lib", type=ssllib_type, action='append', |
| 88 | help="Intercept calls from extra library (format: lib_type:lib_path)") |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 89 | args = parser.parse_args() |
| 90 | |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 91 | |
| 92 | prog = """ |
| 93 | #include <linux/ptrace.h> |
| 94 | #include <linux/sched.h> /* For TASK_COMM_LEN */ |
| 95 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 96 | #define MAX_BUF_SIZE __MAX_BUF_SIZE__ |
| 97 | |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 98 | struct probe_SSL_data_t { |
| 99 | u64 timestamp_ns; |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 100 | u64 delta_ns; |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 101 | u32 pid; |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 102 | u32 tid; |
| 103 | u32 uid; |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 104 | u32 len; |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 105 | int buf_filled; |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 106 | int rw; |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 107 | char comm[TASK_COMM_LEN]; |
| 108 | u8 buf[MAX_BUF_SIZE]; |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 109 | }; |
| 110 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 111 | #define BASE_EVENT_SIZE ((size_t)(&((struct probe_SSL_data_t*)0)->buf)) |
| 112 | #define EVENT_SIZE(X) (BASE_EVENT_SIZE + ((size_t)(X))) |
| 113 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 114 | BPF_PERCPU_ARRAY(ssl_data, struct probe_SSL_data_t, 1); |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 115 | BPF_PERF_OUTPUT(perf_SSL_rw); |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 116 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 117 | BPF_HASH(start_ns, u32); |
| 118 | BPF_HASH(bufs, u32, u64); |
| 119 | |
| 120 | int probe_SSL_rw_enter(struct pt_regs *ctx, void *ssl, void *buf, int num) { |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 121 | int ret; |
| 122 | u32 zero = 0; |
Hengqi Chen | 151fe19 | 2021-05-16 17:18:27 +0800 | [diff] [blame] | 123 | u64 pid_tgid = bpf_get_current_pid_tgid(); |
| 124 | u32 pid = pid_tgid >> 32; |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 125 | u32 tid = pid_tgid; |
| 126 | u32 uid = bpf_get_current_uid_gid(); |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 127 | u64 ts = bpf_ktime_get_ns(); |
Hengqi Chen | 151fe19 | 2021-05-16 17:18:27 +0800 | [diff] [blame] | 128 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 129 | PID_FILTER |
| 130 | UID_FILTER |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 131 | |
Hengqi Chen | 151fe19 | 2021-05-16 17:18:27 +0800 | [diff] [blame] | 132 | bufs.update(&tid, (u64*)&buf); |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 133 | start_ns.update(&tid, &ts); |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 134 | return 0; |
| 135 | } |
| 136 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 137 | static int SSL_exit(struct pt_regs *ctx, int rw) { |
| 138 | int ret; |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 139 | u32 zero = 0; |
Hengqi Chen | 151fe19 | 2021-05-16 17:18:27 +0800 | [diff] [blame] | 140 | u64 pid_tgid = bpf_get_current_pid_tgid(); |
| 141 | u32 pid = pid_tgid >> 32; |
| 142 | u32 tid = (u32)pid_tgid; |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 143 | u32 uid = bpf_get_current_uid_gid(); |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 144 | u64 ts = bpf_ktime_get_ns(); |
Hengqi Chen | 151fe19 | 2021-05-16 17:18:27 +0800 | [diff] [blame] | 145 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 146 | PID_FILTER |
| 147 | UID_FILTER |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 148 | |
Hengqi Chen | 151fe19 | 2021-05-16 17:18:27 +0800 | [diff] [blame] | 149 | u64 *bufp = bufs.lookup(&tid); |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 150 | if (bufp == 0) |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 151 | return 0; |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 152 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 153 | u64 *tsp = start_ns.lookup(&tid); |
| 154 | if (tsp == 0) |
| 155 | return 0; |
| 156 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 157 | int len = PT_REGS_RC(ctx); |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 158 | if (len <= 0) // no data |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 159 | return 0; |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 160 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 161 | struct probe_SSL_data_t *data = ssl_data.lookup(&zero); |
| 162 | if (!data) |
| 163 | return 0; |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 164 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 165 | data->timestamp_ns = ts; |
| 166 | data->delta_ns = ts - *tsp; |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 167 | data->pid = pid; |
| 168 | data->tid = tid; |
| 169 | data->uid = uid; |
| 170 | data->len = (u32)len; |
| 171 | data->buf_filled = 0; |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 172 | data->rw = rw; |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 173 | u32 buf_copy_size = min((size_t)MAX_BUF_SIZE, (size_t)len); |
| 174 | |
| 175 | bpf_get_current_comm(&data->comm, sizeof(data->comm)); |
| 176 | |
| 177 | if (bufp != 0) |
| 178 | ret = bpf_probe_read_user(&data->buf, buf_copy_size, (char *)*bufp); |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 179 | |
Hengqi Chen | 151fe19 | 2021-05-16 17:18:27 +0800 | [diff] [blame] | 180 | bufs.delete(&tid); |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 181 | start_ns.delete(&tid); |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 182 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 183 | if (!ret) |
| 184 | data->buf_filled = 1; |
| 185 | else |
| 186 | buf_copy_size = 0; |
| 187 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 188 | perf_SSL_rw.perf_submit(ctx, data, EVENT_SIZE(buf_copy_size)); |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | int probe_SSL_read_exit(struct pt_regs *ctx) { |
| 193 | return (SSL_exit(ctx, 0)); |
| 194 | } |
| 195 | |
| 196 | int probe_SSL_write_exit(struct pt_regs *ctx) { |
| 197 | return (SSL_exit(ctx, 1)); |
| 198 | } |
| 199 | |
| 200 | BPF_PERF_OUTPUT(perf_SSL_do_handshake); |
| 201 | |
| 202 | int probe_SSL_do_handshake_enter(struct pt_regs *ctx, void *ssl) { |
| 203 | u64 pid_tgid = bpf_get_current_pid_tgid(); |
| 204 | u32 pid = pid_tgid >> 32; |
| 205 | u32 tid = (u32)pid_tgid; |
| 206 | u64 ts = bpf_ktime_get_ns(); |
| 207 | |
| 208 | PID_FILTER |
| 209 | UID_FILTER |
| 210 | |
| 211 | start_ns.update(&tid, &ts); |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | int probe_SSL_do_handshake_exit(struct pt_regs *ctx) { |
| 216 | u32 zero = 0; |
| 217 | u64 pid_tgid = bpf_get_current_pid_tgid(); |
| 218 | u32 pid = pid_tgid >> 32; |
| 219 | u32 tid = (u32)pid_tgid; |
| 220 | u32 uid = bpf_get_current_uid_gid(); |
| 221 | u64 ts = bpf_ktime_get_ns(); |
| 222 | int ret; |
| 223 | |
| 224 | PID_FILTER |
| 225 | UID_FILTER |
| 226 | |
| 227 | u64 *tsp = start_ns.lookup(&tid); |
| 228 | if (tsp == 0) |
| 229 | return 0; |
| 230 | |
| 231 | ret = PT_REGS_RC(ctx); |
| 232 | if (ret <= 0) // handshake failed |
| 233 | return 0; |
| 234 | |
| 235 | struct probe_SSL_data_t *data = ssl_data.lookup(&zero); |
| 236 | if (!data) |
| 237 | return 0; |
| 238 | |
| 239 | data->timestamp_ns = ts; |
| 240 | data->delta_ns = ts - *tsp; |
| 241 | data->pid = pid; |
| 242 | data->tid = tid; |
| 243 | data->uid = uid; |
| 244 | data->len = ret; |
| 245 | data->buf_filled = 0; |
| 246 | data->rw = 2; |
| 247 | bpf_get_current_comm(&data->comm, sizeof(data->comm)); |
| 248 | start_ns.delete(&tid); |
| 249 | |
| 250 | perf_SSL_do_handshake.perf_submit(ctx, data, EVENT_SIZE(0)); |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 251 | return 0; |
| 252 | } |
| 253 | """ |
| 254 | |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 255 | if args.pid: |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 256 | prog = prog.replace('PID_FILTER', 'if (pid != %d) { return 0; }' % args.pid) |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 257 | else: |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 258 | prog = prog.replace('PID_FILTER', '') |
| 259 | |
| 260 | if args.uid is not None: |
| 261 | prog = prog.replace('UID_FILTER', 'if (uid != %d) { return 0; }' % args.uid) |
| 262 | else: |
| 263 | prog = prog.replace('UID_FILTER', '') |
| 264 | |
| 265 | prog = prog.replace('__MAX_BUF_SIZE__', str(args.max_buffer_size)) |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 266 | |
Nathan Scott | cf0792f | 2018-02-02 16:56:50 +1100 | [diff] [blame] | 267 | if args.debug or args.ebpf: |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 268 | print(prog) |
Nathan Scott | cf0792f | 2018-02-02 16:56:50 +1100 | [diff] [blame] | 269 | if args.ebpf: |
| 270 | exit() |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 271 | |
| 272 | |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 273 | b = BPF(text=prog) |
| 274 | |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 275 | # It looks like SSL_read's arguments aren't available in a return probe so you |
| 276 | # need to stash the buffer address in a map on the function entry and read it |
| 277 | # on its exit (Mark Drayton) |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 278 | # |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 279 | def attach_openssl(lib): |
| 280 | b.attach_uprobe(name=lib, sym="SSL_write", |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 281 | fn_name="probe_SSL_rw_enter", pid=args.pid or -1) |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 282 | b.attach_uretprobe(name=lib, sym="SSL_write", |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 283 | fn_name="probe_SSL_write_exit", pid=args.pid or -1) |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 284 | b.attach_uprobe(name=lib, sym="SSL_read", |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 285 | fn_name="probe_SSL_rw_enter", pid=args.pid or -1) |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 286 | b.attach_uretprobe(name=lib, sym="SSL_read", |
Paul Chaignon | d73c58f | 2017-01-21 14:25:41 +0100 | [diff] [blame] | 287 | fn_name="probe_SSL_read_exit", pid=args.pid or -1) |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 288 | if args.latency and args.handshake: |
| 289 | b.attach_uprobe(name="ssl", sym="SSL_do_handshake", |
| 290 | fn_name="probe_SSL_do_handshake_enter", pid=args.pid or -1) |
| 291 | b.attach_uretprobe(name="ssl", sym="SSL_do_handshake", |
| 292 | fn_name="probe_SSL_do_handshake_exit", pid=args.pid or -1) |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 293 | |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 294 | def attach_gnutls(lib): |
| 295 | b.attach_uprobe(name=lib, sym="gnutls_record_send", |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 296 | fn_name="probe_SSL_rw_enter", pid=args.pid or -1) |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 297 | b.attach_uretprobe(name=lib, sym="gnutls_record_send", |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 298 | fn_name="probe_SSL_write_exit", pid=args.pid or -1) |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 299 | b.attach_uprobe(name=lib, sym="gnutls_record_recv", |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 300 | fn_name="probe_SSL_rw_enter", pid=args.pid or -1) |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 301 | b.attach_uretprobe(name=lib, sym="gnutls_record_recv", |
Paul Chaignon | d73c58f | 2017-01-21 14:25:41 +0100 | [diff] [blame] | 302 | fn_name="probe_SSL_read_exit", pid=args.pid or -1) |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 303 | |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 304 | def attach_nss(lib): |
| 305 | b.attach_uprobe(name=lib, sym="PR_Write", |
| 306 | fn_name="probe_SSL_rw_enter", pid=args.pid or -1) |
| 307 | b.attach_uretprobe(name=lib, sym="PR_Write", |
| 308 | fn_name="probe_SSL_write_exit", pid=args.pid or -1) |
| 309 | b.attach_uprobe(name=lib, sym="PR_Send", |
| 310 | fn_name="probe_SSL_rw_enter", pid=args.pid or -1) |
| 311 | b.attach_uretprobe(name=lib, sym="PR_Send", |
| 312 | fn_name="probe_SSL_write_exit", pid=args.pid or -1) |
| 313 | b.attach_uprobe(name=lib, sym="PR_Read", |
| 314 | fn_name="probe_SSL_rw_enter", pid=args.pid or -1) |
| 315 | b.attach_uretprobe(name=lib, sym="PR_Read", |
| 316 | fn_name="probe_SSL_read_exit", pid=args.pid or -1) |
| 317 | b.attach_uprobe(name=lib, sym="PR_Recv", |
| 318 | fn_name="probe_SSL_rw_enter", pid=args.pid or -1) |
| 319 | b.attach_uretprobe(name=lib, sym="PR_Recv", |
| 320 | fn_name="probe_SSL_read_exit", pid=args.pid or -1) |
| 321 | |
| 322 | |
| 323 | LIB_TRACERS = { |
| 324 | "openssl": attach_openssl, |
| 325 | "gnutls": attach_gnutls, |
| 326 | "nss": attach_nss, |
| 327 | } |
| 328 | |
| 329 | |
| 330 | if args.openssl: |
| 331 | attach_openssl("ssl") |
| 332 | if args.gnutls: |
| 333 | attach_gnutls("gnutls") |
jeromemarchand | 8b17dc3 | 2018-08-04 07:09:36 +0200 | [diff] [blame] | 334 | if args.nss: |
Slava Bacherikov | 8db99af | 2022-02-09 23:48:50 +0200 | [diff] [blame] | 335 | attach_nss("nspr4") |
| 336 | |
| 337 | |
| 338 | if args.extra_lib: |
| 339 | for lib_type, lib_path in args.extra_lib: |
| 340 | LIB_TRACERS[lib_type](lib_path) |
jeromemarchand | 8b17dc3 | 2018-08-04 07:09:36 +0200 | [diff] [blame] | 341 | |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 342 | # define output data structure in Python |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 343 | |
| 344 | |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 345 | # header |
xingfeng2510 | 03e4948 | 2022-03-17 13:07:16 +0800 | [diff] [blame] | 346 | header = "%-12s %-18s %-16s %-7s %-7s" % ("FUNC", "TIME(s)", "COMM", "PID", "LEN") |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 347 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 348 | if args.extra: |
| 349 | header += " %-7s %-7s" % ("UID", "TID") |
| 350 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 351 | if args.latency: |
| 352 | header += " %-7s" % ("LAT(ms)") |
| 353 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 354 | print(header) |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 355 | # process event |
| 356 | start = 0 |
| 357 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 358 | def print_event_rw(cpu, data, size): |
| 359 | print_event(cpu, data, size, "perf_SSL_rw") |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 360 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 361 | def print_event_handshake(cpu, data, size): |
| 362 | print_event(cpu, data, size, "perf_SSL_do_handshake") |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 363 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 364 | def print_event(cpu, data, size, evt): |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 365 | global start |
Xiaozhou Liu | 51d62d3 | 2019-02-15 13:03:05 +0800 | [diff] [blame] | 366 | event = b[evt].event(data) |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 367 | if event.len <= args.max_buffer_size: |
| 368 | buf_size = event.len |
| 369 | else: |
| 370 | buf_size = args.max_buffer_size |
| 371 | |
| 372 | if event.buf_filled == 1: |
| 373 | buf = bytearray(event.buf[:buf_size]) |
| 374 | else: |
| 375 | buf_size = 0 |
| 376 | buf = b"" |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 377 | |
| 378 | # Filter events by command |
| 379 | if args.comm: |
keyolk | 49fdec6 | 2020-10-08 05:45:00 +0000 | [diff] [blame] | 380 | if not args.comm == event.comm.decode('utf-8', 'replace'): |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 381 | return |
| 382 | |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 383 | if start == 0: |
| 384 | start = event.timestamp_ns |
| 385 | time_s = (float(event.timestamp_ns - start)) / 1000000000 |
| 386 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 387 | lat_str = "%.3f" % (event.delta_ns / 1000000) if event.delta_ns else "N/A" |
| 388 | |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 389 | s_mark = "-" * 5 + " DATA " + "-" * 5 |
| 390 | |
| 391 | e_mark = "-" * 5 + " END DATA " + "-" * 5 |
| 392 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 393 | truncated_bytes = event.len - buf_size |
Adrian Lopez | d9cc3de | 2016-08-17 14:08:08 +0200 | [diff] [blame] | 394 | if truncated_bytes > 0: |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 395 | e_mark = "-" * 5 + " END DATA (TRUNCATED, " + str(truncated_bytes) + \ |
| 396 | " bytes lost) " + "-" * 5 |
| 397 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 398 | base_fmt = "%(func)-12s %(time)-18.9f %(comm)-16s %(pid)-7d %(len)-6d" |
| 399 | |
| 400 | if args.extra: |
| 401 | base_fmt += " %(uid)-7d %(tid)-7d" |
| 402 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 403 | if args.latency: |
| 404 | base_fmt += " %(lat)-7s" |
| 405 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 406 | fmt = ''.join([base_fmt, "\n%(begin)s\n%(data)s\n%(end)s\n\n"]) |
Matthias Hörmann | d91b31a | 2020-07-06 09:38:39 +0200 | [diff] [blame] | 407 | if args.hexdump: |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 408 | unwrapped_data = binascii.hexlify(buf) |
| 409 | data = textwrap.fill(unwrapped_data.decode('utf-8', 'replace'), width=32) |
Matthias Hörmann | d91b31a | 2020-07-06 09:38:39 +0200 | [diff] [blame] | 410 | else: |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 411 | data = buf.decode('utf-8', 'replace') |
| 412 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 413 | rw_event = { |
| 414 | 0: "READ/RECV", |
| 415 | 1: "WRITE/SEND", |
| 416 | 2: "HANDSHAKE" |
| 417 | } |
| 418 | |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 419 | fmt_data = { |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 420 | 'func': rw_event[event.rw], |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 421 | 'time': time_s, |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 422 | 'lat': lat_str, |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 423 | 'comm': event.comm.decode('utf-8', 'replace'), |
| 424 | 'pid': event.pid, |
| 425 | 'tid': event.tid, |
| 426 | 'uid': event.uid, |
| 427 | 'len': event.len, |
| 428 | 'begin': s_mark, |
| 429 | 'end': e_mark, |
| 430 | 'data': data |
| 431 | } |
| 432 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 433 | # use base_fmt if no buf filled |
| 434 | if buf_size == 0: |
| 435 | print(base_fmt % fmt_data) |
| 436 | else: |
| 437 | print(fmt % fmt_data) |
Slava Bacherikov | 91a7983 | 2021-11-21 15:31:49 +0200 | [diff] [blame] | 438 | |
Tao Xu | ba86086 | 2022-01-28 03:28:41 +0800 | [diff] [blame] | 439 | b["perf_SSL_rw"].open_perf_buffer(print_event_rw) |
| 440 | b["perf_SSL_do_handshake"].open_perf_buffer(print_event_handshake) |
Adrian Lopez | d496d5c | 2016-08-16 17:49:49 +0200 | [diff] [blame] | 441 | while 1: |
Jerome Marchand | 5167127 | 2018-12-19 01:57:24 +0100 | [diff] [blame] | 442 | try: |
| 443 | b.perf_buffer_poll() |
| 444 | except KeyboardInterrupt: |
| 445 | exit() |