annotate fuzz.h @ 1385:6c92e97553f1 fuzz

Add a flag whether to longjmp, missed that last commit
author Matt Johnston <matt@ucc.asn.au>
date Thu, 01 Jun 2017 21:30:26 +0800
parents f03cfe9c76ac
children a90fdd2d2ed8
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1 #ifndef DROPBEAR_FUZZ_H
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2 #define DROPBEAR_FUZZ_H
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3
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4 #include "config.h"
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5 #ifdef DROPBEAR_FUZZ
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6
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7 #include "includes.h"
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8 #include "buffer.h"
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9 #include "algo.h"
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10 #include "fuzz-wrapfd.h"
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11
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12 // once per process
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13 void common_setup_fuzzer(void);
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14 void svr_setup_fuzzer(void);
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15
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16 // must be called once per fuzz iteration.
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17 // returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE
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18 int fuzzer_set_input(const uint8_t *Data, size_t Size);
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19
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20 // fuzzer functions that intrude into general code
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21 void fuzz_kex_fakealgos(void);
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22 int fuzz_checkpubkey_line(buffer* line, int line_num, char* filename,
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23 const char* algo, unsigned int algolen,
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24 const unsigned char* keyblob, unsigned int keybloblen);
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25 extern const char * const * fuzz_signkey_names;
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26 void fuzz_seed(void);
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27 void fuzz_get_socket_address(int fd, char **local_host, char **local_port,
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28 char **remote_host, char **remote_port, int host_lookup);
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29
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30 // fake IO wrappers
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31 #ifndef FUZZ_SKIP_WRAP
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32 #define select(nfds, readfds, writefds, exceptfds, timeout) \
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33 wrapfd_select(nfds, readfds, writefds, exceptfds, timeout)
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34 #define write(fd, buf, count) wrapfd_write(fd, buf, count)
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35 #define read(fd, buf, count) wrapfd_read(fd, buf, count)
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36 #define close(fd) wrapfd_close(fd)
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37 #endif // FUZZ_SKIP_WRAP
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38
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39 struct dropbear_fuzz_options {
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40 int fuzzing;
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41
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42 // to record an unencrypted stream
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43 FILE* recordf;
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44
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45 // fuzzing input
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46 buffer *input;
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47 struct dropbear_cipher recv_cipher;
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48 struct dropbear_hash recv_mac;
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49 int wrapfds;
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50
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51 // dropbear_exit() jumps back
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52 int do_jmp;
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53 sigjmp_buf jmp;
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54
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55 uid_t pw_uid;
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56 gid_t pw_gid;
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57 char* pw_name;
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58 char* pw_dir;
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59 char* pw_shell;
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60 char* pw_passwd;
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61 };
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62
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63 extern struct dropbear_fuzz_options fuzz;
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64
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65 #endif // DROPBEAR_FUZZ
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67 #endif /* DROPBEAR_FUZZ_H */