Mercurial > dropbear

annotate fuzz.h @ 1761:4b984c42372d DROPBEAR_2020.81

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Changelog for 2020.81
author Matt Johnston <matt@ucc.asn.au>
date Thu, 29 Oct 2020 21:35:50 +0800
parents 3b9b427925a0
children 517fb7b62438
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1348
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1 #ifndef DROPBEAR_FUZZ_H
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
2 #define DROPBEAR_FUZZ_H
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
3
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
4 #include "config.h"
1559
92c93b4a3646 Fix to be able to compile normal(ish) binaries with --enable-fuzz
Matt Johnston <matt@ucc.asn.au>
parents: 1558
diff changeset
5
1558
2f64cb3d3007 - #if not #ifdef for DROPBEAR_FUZZ
Matt Johnston <matt@ucc.asn.au>
parents: 1456
diff changeset
6 #if DROPBEAR_FUZZ
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
7
1348
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
8 #include "includes.h"
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
9 #include "buffer.h"
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
10 #include "algo.h"
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
11 #include "fuzz-wrapfd.h"
1348
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
12
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents: 1348
diff changeset
13 // once per process
1456
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1385
diff changeset
14 void fuzz_common_setup(void);
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1385
diff changeset
15 void fuzz_svr_setup(void);
1741
d1b279aa5ed1 Get client fuzzer building and starting (fails straight away)
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
16 void fuzz_cli_setup(void);
1348
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
17
1377
d4cc85e6c569 rearrange, all fuzzers now call fuzzer_set_input()
Matt Johnston <matt@ucc.asn.au>
parents: 1369
diff changeset
18 // must be called once per fuzz iteration.
d4cc85e6c569 rearrange, all fuzzers now call fuzzer_set_input()
Matt Johnston <matt@ucc.asn.au>
parents: 1369
diff changeset
19 // returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE
1456
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1385
diff changeset
20 int fuzz_set_input(const uint8_t *Data, size_t Size);
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1385
diff changeset
21
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1385
diff changeset
22 int fuzz_run_preauth(const uint8_t *Data, size_t Size, int skip_kexmaths);
1746
28ab2cdb84bf Fix fuzzer build
Matt Johnston <matt@ucc.asn.au>
parents: 1741
diff changeset
23 int fuzz_run_client(const uint8_t *Data, size_t Size, int skip_kexmaths);
1589
35af85194268 Add kexdh and kexecdh fuzzers
Matt Johnston <matt@ucc.asn.au>
parents: 1561
diff changeset
24 const void* fuzz_get_algo(const algo_type *algos, const char* name);
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents: 1348
diff changeset
25
1369
ddfcadca3c4c fuzzer-pubkey
Matt Johnston <matt@ucc.asn.au>
parents: 1358
diff changeset
26 // fuzzer functions that intrude into general code
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
27 void fuzz_kex_fakealgos(void);
1369
ddfcadca3c4c fuzzer-pubkey
Matt Johnston <matt@ucc.asn.au>
parents: 1358
diff changeset
28 int fuzz_checkpubkey_line(buffer* line, int line_num, char* filename,
ddfcadca3c4c fuzzer-pubkey
Matt Johnston <matt@ucc.asn.au>
parents: 1358
diff changeset
29 const char* algo, unsigned int algolen,
ddfcadca3c4c fuzzer-pubkey
Matt Johnston <matt@ucc.asn.au>
parents: 1358
diff changeset
30 const unsigned char* keyblob, unsigned int keybloblen);
ddfcadca3c4c fuzzer-pubkey
Matt Johnston <matt@ucc.asn.au>
parents: 1358
diff changeset
31 extern const char * const * fuzz_signkey_names;
ddfcadca3c4c fuzzer-pubkey
Matt Johnston <matt@ucc.asn.au>
parents: 1358
diff changeset
32 void fuzz_seed(void);
1741
d1b279aa5ed1 Get client fuzzer building and starting (fails straight away)
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
33
d1b279aa5ed1 Get client fuzzer building and starting (fails straight away)
Matt Johnston <matt@ucc.asn.au>
parents: 1740
diff changeset
34 // helpers
1383
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1377
diff changeset
35 void fuzz_get_socket_address(int fd, char **local_host, char **local_port,
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1377
diff changeset
36 char **remote_host, char **remote_port, int host_lookup);
1456
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1385
diff changeset
37 void fuzz_fake_send_kexdh_reply(void);
1740
dfbe947bdf0d Make wrapfd share a common buffer for all FDs
Matt Johnston <matt@ucc.asn.au>
parents: 1589
diff changeset
38 int fuzz_spawn_command(int *ret_writefd, int *ret_readfd, int *ret_errfd, pid_t *ret_pid);
1751
3b9b427925a0 Load password and key for client fuzzer.
Matt Johnston <matt@ucc.asn.au>
parents: 1746
diff changeset
39 void fuzz_dump(const unsigned char* data, size_t len);
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
40
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
41 // fake IO wrappers
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
42 #ifndef FUZZ_SKIP_WRAP
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
43 #define select(nfds, readfds, writefds, exceptfds, timeout) \
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
44 wrapfd_select(nfds, readfds, writefds, exceptfds, timeout)
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
45 #define write(fd, buf, count) wrapfd_write(fd, buf, count)
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
46 #define read(fd, buf, count) wrapfd_read(fd, buf, count)
1358
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
47 #define close(fd) wrapfd_close(fd)
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
48 #endif // FUZZ_SKIP_WRAP
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
49
1348
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
50 struct dropbear_fuzz_options {
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
51 int fuzzing;
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
52
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
53 // fuzzing input
1356
3677a510f545 add wrapfd. improve fuzzer in makefile
Matt Johnston <matt@ucc.asn.au>
parents: 1348
diff changeset
54 buffer *input;
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
55 struct dropbear_cipher recv_cipher;
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
56 struct dropbear_hash recv_mac;
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
57 int wrapfds;
1348
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
58
1456
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1385
diff changeset
59 // whether to skip slow bignum maths
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1385
diff changeset
60 int skip_kexmaths;
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1385
diff changeset
61
1348
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
62 // dropbear_exit() jumps back
1385
6c92e97553f1 Add a flag whether to longjmp, missed that last commit
Matt Johnston <matt@ucc.asn.au>
parents: 1383
diff changeset
63 int do_jmp;
1348
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
64 sigjmp_buf jmp;
1751
3b9b427925a0 Load password and key for client fuzzer.
Matt Johnston <matt@ucc.asn.au>
parents: 1746
diff changeset
65
3b9b427925a0 Load password and key for client fuzzer.
Matt Johnston <matt@ucc.asn.au>
parents: 1746
diff changeset
66 // write out decrypted session data to this FD if it's set
3b9b427925a0 Load password and key for client fuzzer.
Matt Johnston <matt@ucc.asn.au>
parents: 1746
diff changeset
67 // flag - this needs to be set manually in cli-main.c etc
3b9b427925a0 Load password and key for client fuzzer.
Matt Johnston <matt@ucc.asn.au>
parents: 1746
diff changeset
68 int dumping;
3b9b427925a0 Load password and key for client fuzzer.
Matt Johnston <matt@ucc.asn.au>
parents: 1746
diff changeset
69 // the file descriptor
3b9b427925a0 Load password and key for client fuzzer.
Matt Johnston <matt@ucc.asn.au>
parents: 1746
diff changeset
70 int recv_dumpfd;
1348
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
71 };
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
72
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
73 extern struct dropbear_fuzz_options fuzz;
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
74
1357
08f4fa4dc6a0 closer to working
Matt Johnston <matt@ucc.asn.au>
parents: 1356
diff changeset
75 #endif // DROPBEAR_FUZZ
1348
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
76
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
77 #endif /* DROPBEAR_FUZZ_H */