Mercurial > dropbear

annotate fuzz-wrapfd.c @ 1745:a6824c54962a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Merge fuzz branch
author Matt Johnston <matt@ucc.asn.au>
date Sun, 18 Oct 2020 22:53:44 +0800
parents 6cf465af5d9f
children 28ab2cdb84bf
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
1 #define FUZZ_SKIP_WRAP 1
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
2 #include "includes.h"
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
3 #include "fuzz-wrapfd.h"
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
4
1596
60fceff95858 workaround memory sanitizer FD_ZERO false positives
Matt Johnston <matt@ucc.asn.au>
parents: 1587
diff changeset
5 #include "dbutil.h"
60fceff95858 workaround memory sanitizer FD_ZERO false positives
Matt Johnston <matt@ucc.asn.au>
parents: 1587
diff changeset
6
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
7 #include "fuzz.h"
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
8
1528
b9e4fd5a0e72 compile fixes
Matt Johnston <matt@ucc.asn.au>
parents: 1382
diff changeset
9 #define IOWRAP_MAXFD (FD_SETSIZE-1)
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
10 static const int MAX_RANDOM_IN = 50000;
1587
b579ec254988 try and improve the odds of useful fuzzer activity
Matt Johnston <matt@ucc.asn.au>
parents: 1575
diff changeset
11 static const double CHANCE_CLOSE = 1.0 / 600;
b579ec254988 try and improve the odds of useful fuzzer activity
Matt Johnston <matt@ucc.asn.au>
parents: 1575
diff changeset
12 static const double CHANCE_INTR = 1.0 / 900;
b579ec254988 try and improve the odds of useful fuzzer activity
Matt Johnston <matt@ucc.asn.au>
parents: 1575
diff changeset
13 static const double CHANCE_READ1 = 0.96;
b579ec254988 try and improve the odds of useful fuzzer activity
Matt Johnston <matt@ucc.asn.au>
parents: 1575
diff changeset
14 static const double CHANCE_READ2 = 0.5;
b579ec254988 try and improve the odds of useful fuzzer activity
Matt Johnston <matt@ucc.asn.au>
parents: 1575
diff changeset
15 static const double CHANCE_WRITE1 = 0.96;
b579ec254988 try and improve the odds of useful fuzzer activity
Matt Johnston <matt@ucc.asn.au>
parents: 1575
diff changeset
16 static const double CHANCE_WRITE2 = 0.5;
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
17
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
18 struct fdwrap {
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
19 enum wrapfd_mode mode;
1358
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
20 int closein;
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
21 int closeout;
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
22 };
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
23
1744
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
24 static struct fdwrap wrap_fds[IOWRAP_MAXFD+1] = {0};
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
25 static int wrapfd_maxfd = -1;
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
26 static unsigned short rand_state[3];
1740
dfbe947bdf0d Make wrapfd share a common buffer for all FDs
Matt Johnston <matt@ucc.asn.au>
parents: 1596
diff changeset
27 static buffer *input_buf;
1744
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
28 static int devnull_fd = -1;
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
29
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
30 static void wrapfd_remove(int fd);
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
31
1740
dfbe947bdf0d Make wrapfd share a common buffer for all FDs
Matt Johnston <matt@ucc.asn.au>
parents: 1596
diff changeset
32 void wrapfd_setup(buffer *buf) {
1382
4b864fd12b22 fix building with DEBUG_TRACE
Matt Johnston <matt@ucc.asn.au>
parents: 1377
diff changeset
33 TRACE(("wrapfd_setup"))
1744
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
34
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
35 // clean old ones
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
36 int i;
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
37 for (i = 0; i <= wrapfd_maxfd; i++) {
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
38 if (wrap_fds[i].mode == COMMONBUF) {
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
39 wrapfd_remove(i);
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
40 }
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
41 }
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
42 wrapfd_maxfd = -1;
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
43
1358
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
44 memset(rand_state, 0x0, sizeof(rand_state));
1377
d4cc85e6c569 rearrange, all fuzzers now call fuzzer_set_input()
Matt Johnston <matt@ucc.asn.au>
parents: 1360
diff changeset
45 wrapfd_setseed(50);
1740
dfbe947bdf0d Make wrapfd share a common buffer for all FDs
Matt Johnston <matt@ucc.asn.au>
parents: 1596
diff changeset
46 input_buf = buf;
1377
d4cc85e6c569 rearrange, all fuzzers now call fuzzer_set_input()
Matt Johnston <matt@ucc.asn.au>
parents: 1360
diff changeset
47 }
d4cc85e6c569 rearrange, all fuzzers now call fuzzer_set_input()
Matt Johnston <matt@ucc.asn.au>
parents: 1360
diff changeset
48
d4cc85e6c569 rearrange, all fuzzers now call fuzzer_set_input()
Matt Johnston <matt@ucc.asn.au>
parents: 1360
diff changeset
49 void wrapfd_setseed(uint32_t seed) {
1528
b9e4fd5a0e72 compile fixes
Matt Johnston <matt@ucc.asn.au>
parents: 1382
diff changeset
50 memcpy(rand_state, &seed, sizeof(seed));
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
51 nrand48(rand_state);
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
52 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
53
1740
dfbe947bdf0d Make wrapfd share a common buffer for all FDs
Matt Johnston <matt@ucc.asn.au>
parents: 1596
diff changeset
54 int wrapfd_new() {
1744
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
55 if (devnull_fd == -1) {
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
56 devnull_fd = open("/dev/null", O_RDONLY);
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
57 assert(devnull_fd != -1);
1740
dfbe947bdf0d Make wrapfd share a common buffer for all FDs
Matt Johnston <matt@ucc.asn.au>
parents: 1596
diff changeset
58 }
1744
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
59
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
60 int fd = dup(devnull_fd);
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
61 assert(fd != -1);
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
62 assert(wrap_fds[fd].mode == UNUSED);
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
63 wrap_fds[fd].mode = COMMONBUF;
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
64 wrap_fds[fd].closein = 0;
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
65 wrap_fds[fd].closeout = 0;
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
66 wrapfd_maxfd = MAX(fd, wrapfd_maxfd);
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
67
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
68 return fd;
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
69 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
70
1744
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
71 static void wrapfd_remove(int fd) {
1358
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
72 TRACE(("wrapfd_remove %d", fd))
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
73 assert(fd >= 0);
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
74 assert(fd <= IOWRAP_MAXFD);
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
75 assert(wrap_fds[fd].mode != UNUSED);
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
76 wrap_fds[fd].mode = UNUSED;
1744
6cf465af5d9f Allocate real file descriptors for fuzz input with dup()
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
77 m_close(fd);
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
78 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
79
1360
16f45f2df38f ignore wrapfd_close for unknown
Matt Johnston <matt@ucc.asn.au>
parents: 1358
diff changeset
80 int wrapfd_close(int fd) {
1528
b9e4fd5a0e72 compile fixes
Matt Johnston <matt@ucc.asn.au>
parents: 1382
diff changeset
81 if (fd >= 0 && fd <= IOWRAP_MAXFD && wrap_fds[fd].mode != UNUSED) {
1360
16f45f2df38f ignore wrapfd_close for unknown
Matt Johnston <matt@ucc.asn.au>
parents: 1358
diff changeset
82 wrapfd_remove(fd);
16f45f2df38f ignore wrapfd_close for unknown
Matt Johnston <matt@ucc.asn.au>
parents: 1358
diff changeset
83 return 0;
1528
b9e4fd5a0e72 compile fixes
Matt Johnston <matt@ucc.asn.au>
parents: 1382
diff changeset
84 } else {
1360
16f45f2df38f ignore wrapfd_close for unknown
Matt Johnston <matt@ucc.asn.au>
parents: 1358
diff changeset
85 return close(fd);
16f45f2df38f ignore wrapfd_close for unknown
Matt Johnston <matt@ucc.asn.au>
parents: 1358
diff changeset
86 }
1358
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
87 }
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
88
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
89 int wrapfd_read(int fd, void *out, size_t count) {
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
90 size_t maxread;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
91 buffer *buf;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
92
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
93 if (!fuzz.wrapfds) {
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
94 return read(fd, out, count);
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
95 }
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
96
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
97 if (fd < 0 || fd > IOWRAP_MAXFD || wrap_fds[fd].mode == UNUSED) {
1559
92c93b4a3646 Fix to be able to compile normal(ish) binaries with --enable-fuzz
Matt Johnston <matt@ucc.asn.au>
parents: 1528
diff changeset
98 /* XXX - assertion failure? */
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
99 TRACE(("Bad read descriptor %d\n", fd))
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
100 errno = EBADF;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
101 return -1;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
102 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
103
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
104 assert(count != 0);
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
105
1358
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
106 if (wrap_fds[fd].closein || erand48(rand_state) < CHANCE_CLOSE) {
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
107 wrap_fds[fd].closein = 1;
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
108 errno = ECONNRESET;
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
109 return -1;
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
110 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
111
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
112 if (erand48(rand_state) < CHANCE_INTR) {
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
113 errno = EINTR;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
114 return -1;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
115 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
116
1740
dfbe947bdf0d Make wrapfd share a common buffer for all FDs
Matt Johnston <matt@ucc.asn.au>
parents: 1596
diff changeset
117 if (input_buf) {
dfbe947bdf0d Make wrapfd share a common buffer for all FDs
Matt Johnston <matt@ucc.asn.au>
parents: 1596
diff changeset
118 maxread = MIN(input_buf->len - input_buf->pos, count);
1559
92c93b4a3646 Fix to be able to compile normal(ish) binaries with --enable-fuzz
Matt Johnston <matt@ucc.asn.au>
parents: 1528
diff changeset
119 /* returns 0 if buf is EOF, as intended */
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
120 if (maxread > 0) {
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
121 maxread = nrand48(rand_state) % maxread + 1;
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
122 }
1740
dfbe947bdf0d Make wrapfd share a common buffer for all FDs
Matt Johnston <matt@ucc.asn.au>
parents: 1596
diff changeset
123 memcpy(out, buf_getptr(input_buf, maxread), maxread);
dfbe947bdf0d Make wrapfd share a common buffer for all FDs
Matt Johnston <matt@ucc.asn.au>
parents: 1596
diff changeset
124 buf_incrpos(input_buf, maxread);
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
125 return maxread;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
126 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
127
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
128 maxread = MIN(MAX_RANDOM_IN, count);
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
129 maxread = nrand48(rand_state) % maxread + 1;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
130 memset(out, 0xef, maxread);
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
131 return maxread;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
132 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
133
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
134 int wrapfd_write(int fd, const void* in, size_t count) {
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
135 unsigned const volatile char* volin = in;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
136 unsigned int i;
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
137
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
138 if (!fuzz.wrapfds) {
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
139 return write(fd, in, count);
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
140 }
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
141
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
142 if (fd < 0 || fd > IOWRAP_MAXFD || wrap_fds[fd].mode == UNUSED) {
1559
92c93b4a3646 Fix to be able to compile normal(ish) binaries with --enable-fuzz
Matt Johnston <matt@ucc.asn.au>
parents: 1528
diff changeset
143 /* XXX - assertion failure? */
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
144 TRACE(("Bad read descriptor %d\n", fd))
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
145 errno = EBADF;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
146 return -1;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
147 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
148
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
149 assert(count != 0);
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
150
1559
92c93b4a3646 Fix to be able to compile normal(ish) binaries with --enable-fuzz
Matt Johnston <matt@ucc.asn.au>
parents: 1528
diff changeset
151 /* force read to exercise sanitisers */
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
152 for (i = 0; i < count; i++) {
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
153 (void)volin[i];
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
154 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
155
1358
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
156 if (wrap_fds[fd].closeout || erand48(rand_state) < CHANCE_CLOSE) {
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
157 wrap_fds[fd].closeout = 1;
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
158 errno = ECONNRESET;
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
159 return -1;
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
160 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
161
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
162 if (erand48(rand_state) < CHANCE_INTR) {
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
163 errno = EINTR;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
164 return -1;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
165 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
166
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
167 return nrand48(rand_state) % (count+1);
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
168 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
169
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
170 int wrapfd_select(int nfds, fd_set *readfds, fd_set *writefds,
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
171 fd_set *exceptfds, struct timeval *timeout) {
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
172 int i, nset, sel;
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
173 int ret = 0;
1528
b9e4fd5a0e72 compile fixes
Matt Johnston <matt@ucc.asn.au>
parents: 1382
diff changeset
174 int fdlist[IOWRAP_MAXFD+1];
b9e4fd5a0e72 compile fixes
Matt Johnston <matt@ucc.asn.au>
parents: 1382
diff changeset
175
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
176 if (!fuzz.wrapfds) {
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
177 return select(nfds, readfds, writefds, exceptfds, timeout);
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
178 }
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
179
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
180 assert(nfds <= IOWRAP_MAXFD+1);
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
181
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
182 if (erand48(rand_state) < CHANCE_INTR) {
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
183 errno = EINTR;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
184 return -1;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
185 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186
1559
92c93b4a3646 Fix to be able to compile normal(ish) binaries with --enable-fuzz
Matt Johnston <matt@ucc.asn.au>
parents: 1528
diff changeset
187 /* read */
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
188 if (readfds != NULL && erand48(rand_state) < CHANCE_READ1) {
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189 for (i = 0, nset = 0; i < nfds; i++) {
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
190 if (FD_ISSET(i, readfds)) {
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
191 assert(wrap_fds[i].mode != UNUSED);
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
192 fdlist[nset] = i;
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
193 nset++;
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
194 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
195 }
1596
60fceff95858 workaround memory sanitizer FD_ZERO false positives
Matt Johnston <matt@ucc.asn.au>
parents: 1587
diff changeset
196 DROPBEAR_FD_ZERO(readfds);
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
197
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
198 if (nset > 0) {
1559
92c93b4a3646 Fix to be able to compile normal(ish) binaries with --enable-fuzz
Matt Johnston <matt@ucc.asn.au>
parents: 1528
diff changeset
199 /* set one */
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
200 sel = fdlist[nrand48(rand_state) % nset];
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
201 FD_SET(sel, readfds);
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
202 ret++;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
203
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
204 if (erand48(rand_state) < CHANCE_READ2) {
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
205 sel = fdlist[nrand48(rand_state) % nset];
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
206 if (!FD_ISSET(sel, readfds)) {
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
207 FD_SET(sel, readfds);
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
208 ret++;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
209 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
210 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
211 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
213
1559
92c93b4a3646 Fix to be able to compile normal(ish) binaries with --enable-fuzz
Matt Johnston <matt@ucc.asn.au>
parents: 1528
diff changeset
214 /* write */
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
215 if (writefds != NULL && erand48(rand_state) < CHANCE_WRITE1) {
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
216 for (i = 0, nset = 0; i < nfds; i++) {
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
217 if (FD_ISSET(i, writefds)) {
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
218 assert(wrap_fds[i].mode != UNUSED);
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
219 fdlist[nset] = i;
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
220 nset++;
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
221 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
222 }
1596
60fceff95858 workaround memory sanitizer FD_ZERO false positives
Matt Johnston <matt@ucc.asn.au>
parents: 1587
diff changeset
223 DROPBEAR_FD_ZERO(writefds);
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
224
1559
92c93b4a3646 Fix to be able to compile normal(ish) binaries with --enable-fuzz
Matt Johnston <matt@ucc.asn.au>
parents: 1528
diff changeset
225 /* set one */
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
226 if (nset > 0) {
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
227 sel = fdlist[nrand48(rand_state) % nset];
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
228 FD_SET(sel, writefds);
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
229 ret++;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
230
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
231 if (erand48(rand_state) < CHANCE_WRITE2) {
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
232 sel = fdlist[nrand48(rand_state) % nset];
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
233 if (!FD_ISSET(sel, writefds)) {
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
234 FD_SET(sel, writefds);
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
235 ret++;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
237 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
238 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
239 }
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
240 return ret;
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241 }
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
242