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https://github.com/jart/cosmopolitan.git
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e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
290 lines
9.9 KiB
C
290 lines
9.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/log/check.h"
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#include "libc/stdio/rand.h"
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#include "libc/str/str.h"
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#include "libc/testlib/testlib.h"
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#include "net/finger/finger.h"
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#define DESCRIBESYN(s) MyDescribeSyn(s, sizeof(s) - 1)
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char o[128];
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char *MyDescribeSyn(const char *p, size_t n) {
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char *q;
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rngset(o, sizeof(o), lemur64, -1);
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q = DescribeSyn(o, sizeof(o), p, n);
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CHECK_NOTNULL(q);
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CHECK_EQ(strlen(o), q - o);
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return o;
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}
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TEST(DescribeSyn, badPacket) {
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ASSERT_EQ(NULL, DescribeSyn(o, sizeof(o), "123", 3));
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}
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TEST(DescribeSyn, testWindows7) {
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// version = 4
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// ihl = 20
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// dscp = 0
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// ecn = 0
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// lengthtotal = 52
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// identification = 5538
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// flags = 2
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// fragmentoffset = 0
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// ttl = 128
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// protocol = 6
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// ipchecksum = 48124
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// srcip = 127.10.10.150
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// dstip = 127.10.10.124
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//
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// srcport = 50078
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// dstport = 7000
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// sequence = 305725139
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// acknumber = 0
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// dataoffset = 8
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// ns = 0
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// cwr = 0
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// ece = 0
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// urg = 0
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// ack = 0
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// psh = 0
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// rst = 0
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// syn = 1
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// fin = 0
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// wsize = 8192
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// tcpchecksum = 13806
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// urgpointer = 0
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//
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// option 2 4 5 180 (Maximum Segment Size)
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// option 1 (No-Operation)
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// option 3 3 2 (Window Scale)
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// option 1 (No-Operation)
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// option 1 (No-Operation)
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// option 4 2 (SACK Permitted)
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static char s[] = "\
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\x45\x00\x00\x34\x15\xa2\x40\x00\x80\x06\xbb\xfc\x7f\x0a\x0a\x96\
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\x7f\x0a\x0a\x7c\xc3\x9e\x1b\x58\x12\x38\xfe\xd3\x00\x00\x00\x00\
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\x80\x02\x20\x00\x35\xee\x00\x00\x02\x04\x05\xb4\x01\x03\x03\x02\
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\x01\x01\x04\x02";
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EXPECT_STREQ("128:MNKNNO:2710:52", DESCRIBESYN(s));
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}
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TEST(DescribeSyn, testWindows10) {
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// version = 4
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// ihl = 20
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// dscp = 0
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// ecn = 0
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// lengthtotal = 52
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// identification = 24981
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// flags = 2
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// fragmentoffset = 0
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// ttl = 128
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// protocol = 6
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// ipchecksum = 28818
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// srcip = 127.10.10.13
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// dstip = 127.10.10.124
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//
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// srcport = 60914
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// dstport = 7000
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// sequence = 3953567664
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// acknumber = 0
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// dataoffset = 8
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// ns = 0
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// cwr = 0
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// ece = 0
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// urg = 0
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// ack = 0
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// psh = 0
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// rst = 0
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// syn = 1
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// fin = 0
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// wsize = 64240
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// tcpchecksum = 44768
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// urgpointer = 0
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//
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// option 2 4 5 180 (Maximum Segment Size)
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// option 1 (No-Operation)
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// option 3 3 8 (Window Scale)
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// option 1 (No-Operation)
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// option 1 (No-Operation)
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// option 4 2 (SACK Permitted)
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static char s[] = "\
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\x45\x00\x00\x34\x61\x95\x40\x00\x80\x06\x70\x92\x7f\x0a\x0a\x0d\
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\x7f\x0a\x0a\x7c\xed\xf2\x1b\x58\xeb\xa6\xa7\xb0\x00\x00\x00\x00\
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\x80\x02\xfa\xf0\xae\xe0\x00\x00\x02\x04\x05\xb4\x01\x03\x03\x08\
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\x01\x01\x04\x02";
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EXPECT_STREQ("128:MNKNNO:2573:52", DESCRIBESYN(s));
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}
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TEST(FingerprintSyn, testLinuxAlpine_isLinux) {
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// version = 4
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// ihl = 20
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// dscp = 0
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// ecn = 0
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// lengthtotal = 60
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// identification = 16488
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// flags = 2
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// fragmentoffset = 0
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// ttl = 64
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// protocol = 6
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// ipchecksum = 53576
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// srcip = 127.10.10.124
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// dstip = 127.10.10.124
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//
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// srcport = 60978
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// dstport = 7000
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// sequence = 4272530606
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// acknumber = 0
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// dataoffset = 10
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// ns = 0
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// cwr = 0
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// ece = 0
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// urg = 0
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// ack = 0
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// psh = 0
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// rst = 0
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// syn = 1
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// fin = 0
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// wsize = 65495
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// tcpchecksum = 10554
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// urgpointer = 0
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//
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// option 2 4 255 215 (Maximum Segment Size)
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// option 4 2 (SACK Permitted)
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// option 8 10 67 61 171 124 0 0 0 0 (Timestamps)
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// option 1 (No-Operation)
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// option 3 3 7 (Window Scale)
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static char s[] = "\
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\x45\x00\x00\x3c\x40\x68\x40\x00\x40\x06\xd1\x48\x7f\x0a\x0a\x7c\
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\x7f\x0a\x0a\x7c\xee\x32\x1b\x58\xfe\xa9\xa4\xae\x00\x00\x00\x00\
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\xa0\x02\xff\xd7\x29\x3a\x00\x00\x02\x04\xff\xd7\x04\x02\x08\x0a\
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\x43\x3d\xab\x7c\x00\x00\x00\x00\x01\x03\x03\x07";
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EXPECT_STREQ("64:MOTNK:2684:60", DESCRIBESYN(s));
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}
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TEST(FingerprintSyn, testLinuxDebian_isLinux) {
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// version = 4
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// ihl = 20
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// dscp = 0
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// ecn = 0
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// lengthtotal = 60
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// identification = 51388
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// flags = 2
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// fragmentoffset = 0
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// ttl = 64
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// protocol = 6
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// ipchecksum = 18678
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// srcip = 127.10.10.122
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// dstip = 127.10.10.124
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//
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// srcport = 57892
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// dstport = 7000
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// sequence = 4142527109
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// acknumber = 0
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// dataoffset = 10
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// ns = 0
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// cwr = 0
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// ece = 0
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// urg = 0
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// ack = 0
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// psh = 0
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// rst = 0
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// syn = 1
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// fin = 0
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// wsize = 64240
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// tcpchecksum = 24492
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// urgpointer = 0
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//
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// option 2 4 5 180 (Maximum Segment Size)
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// option 4 2 (SACK Permitted)
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// option 8 10 74 67 147 41 0 0 0 0 (Timestamps)
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// option 1 (No-Operation)
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// option 3 3 7 (Window Scale)
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static char s[] = "\
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\x45\x00\x00\x3c\xc8\xbc\x40\x00\x40\x06\x48\xf6\x7f\x0a\x0a\x7a\
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\x7f\x0a\x0a\x7c\xe2\x24\x1b\x58\xf6\xe9\xf2\x85\x00\x00\x00\x00\
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\xa0\x02\xfa\xf0\x5f\xac\x00\x00\x02\x04\x05\xb4\x04\x02\x08\x0a\
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\x4a\x43\x93\x29\x00\x00\x00\x00\x01\x03\x03\x07";
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EXPECT_STREQ("64:MOTNK:2682:60", DESCRIBESYN(s));
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}
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TEST(FingerprintSyn, testLinuxFastOpen_isLinux) {
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static char s[] = "\
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\x45\x00\x00\x99\x6f\x97\x40\x00\x40\x06\xa1\xbc\x7f\x0a\x0a\x7c\
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\x7f\x0a\x0a\x7c\xee\x3a\x1b\x58\xe1\xbd\xd2\x8d\x00\x00\x00\x00\
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\xd0\x02\xff\xd7\x29\x97\x00\x00\x02\x04\xff\xd7\x04\x02\x08\x0a\
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\x43\x3f\x21\xf8\x00\x00\x00\x00\x01\x03\x03\x07\x22\x0a\xd4\x75\
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\x4f\x06\xc0\x97\x25\x6c\x01\x01";
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EXPECT_STREQ("64:MOTNK:2684:153", DESCRIBESYN(s));
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}
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TEST(FingerprintSyn, testLinuxGceVm_isLinux) {
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static char s[] = "\
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\x45\x20\x00\x3c\x59\x9a\x40\x00\x3b\x06\xb0\xe4\x23\xe2\xfc\xb5\
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\x7f\x0a\x0a\x7c\xd2\xfe\x1b\x58\xf5\xb2\xf6\xca\x00\x00\x00\x00\
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\xa0\x02\xff\x28\x16\xe7\x00\x00\x02\x04\x05\x8c\x04\x02\x08\x0a\
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\xb6\x4d\x6b\xd8\x00\x00\x00\x00\x01\x03\x03\x07";
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EXPECT_STREQ("59:MOTNK:64693:60", DESCRIBESYN(s));
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}
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TEST(FingerprintSyn, testOpenbsd) {
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static char s[] = "\
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\x45\x00\x00\x40\x7c\x71\x40\x00\x40\x06\x95\x32\x7f\x0a\x0a\x85\
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\x7f\x0a\x0a\x7c\xa2\x91\x1b\x58\x53\x54\xbc\xc5\x00\x00\x00\x00\
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\xb0\x02\x40\x00\x70\xf7\x00\x00\x02\x04\x05\xb4\x01\x01\x04\x02\
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\x01\x03\x03\x06\x01\x01\x08\x0a\xa2\x70\xeb\x7a\x00\x00\x00\x00";
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EXPECT_STREQ("64:MNNONKNNT:2693:64", DESCRIBESYN(s));
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}
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TEST(FingerprintSyn, testXnu) {
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static char s[] = "\
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\x45\x00\x00\x40\x00\x00\x40\x00\x40\x06\x11\xb1\x7f\x0a\x0a\x78\
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\x7f\x0a\x0a\x7c\xd3\x63\x1b\x58\xe6\xd5\xf8\x7e\x00\x00\x00\x00\
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\xb0\x02\xff\xff\x70\x36\x00\x00\x02\x04\x05\xb4\x01\x03\x03\x06\
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\x01\x01\x08\x0a\x25\x85\xaa\x28\x00\x00\x00\x00\x04\x02\x00\x00";
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EXPECT_STREQ("64:MNKNNTOE:2680:64", DESCRIBESYN(s));
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}
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TEST(FingerprintSyn, testFreebsd12) {
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static char s[] = "\
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\x45\x00\x00\x3c\x00\x00\x40\x00\x40\x06\x11\xae\x7f\x0a\x0a\x7f\
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\x7f\x0a\x0a\x7c\xde\x81\x1b\x58\x23\x39\xfc\x6b\x00\x00\x00\x00\
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\xa0\x02\xff\xff\x8c\x8c\x00\x00\x02\x04\x05\xb4\x01\x03\x03\x06\
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\x04\x02\x08\x0a\x1f\xa1\x59\x46\x00\x00\x00\x00";
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EXPECT_STREQ("64:MNKOT:2687:60", DESCRIBESYN(s));
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}
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TEST(FingerprintSyn, testRedbeanGceVm_isFreebsd) {
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static char s[] = "\
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\x45\x20\x00\x3c\x00\x00\x40\x00\x3b\x06\x92\xe4\x23\xee\x74\x44\
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\x7f\x0a\x0a\x7c\x5a\x6e\x1b\x58\x0a\x15\xba\x1a\x00\x00\x00\x00\
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\xa0\x02\xff\xff\xe4\x60\x00\x00\x02\x04\x05\x8c\x01\x03\x03\x06\
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\x04\x02\x08\x0a\xc9\x06\xb4\x13\x00\x00\x00\x00";
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EXPECT_STREQ("59:MNKOT:29764:60", DESCRIBESYN(s));
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}
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TEST(FingerprintSyn, testNetbsd_isFreebsdSadly) {
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static char s[] = "\
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\x45\x00\x00\x3c\x00\x00\x40\x00\x40\x06\x11\x98\x7f\x0a\x0a\x95\
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\x7f\x0a\x0a\x7c\xfc\x18\x1b\x58\x8e\xb8\x1b\xfe\x00\x00\x00\x00\
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\xa0\x02\x80\x00\xdc\xb6\x00\x00\x02\x04\x05\xb4\x01\x03\x03\x03\
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\x04\x02\x08\x0a\x00\x00\x00\x01\x00\x00\x00\x00";
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EXPECT_STREQ("64:MNKOT:2709:60", DESCRIBESYN(s));
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}
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