Mercurial > dropbear
view fuzz.h @ 1665:7c17995bcdfb
Improve address logging on early exit messages (#83)
Change 'Early exit' and 'Exit before auth' messages to include the IP
address & port as part of the message.
This allows log scanning utilities such as 'fail2ban' to obtain the
offending IP address as part of the failure event instead of extracting
the PID from the message and then scanning the log again for match
'child connection from' messages
Signed-off-by: Kevin Darbyshire-Bryant <[email protected]>
author | Kevin Darbyshire-Bryant <6500011+ldir-EDB0@users.noreply.github.com> |
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date | Wed, 18 Mar 2020 15:28:56 +0000 |
parents | 35af85194268 |
children | dfbe947bdf0d |
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#ifndef DROPBEAR_FUZZ_H #define DROPBEAR_FUZZ_H #include "config.h" #if DROPBEAR_FUZZ #include "includes.h" #include "buffer.h" #include "algo.h" #include "fuzz-wrapfd.h" // once per process void fuzz_common_setup(void); void fuzz_svr_setup(void); // must be called once per fuzz iteration. // returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE int fuzz_set_input(const uint8_t *Data, size_t Size); int fuzz_run_preauth(const uint8_t *Data, size_t Size, int skip_kexmaths); const void* fuzz_get_algo(const algo_type *algos, const char* name); // fuzzer functions that intrude into general code void fuzz_kex_fakealgos(void); int fuzz_checkpubkey_line(buffer* line, int line_num, char* filename, const char* algo, unsigned int algolen, const unsigned char* keyblob, unsigned int keybloblen); extern const char * const * fuzz_signkey_names; void fuzz_seed(void); void fuzz_get_socket_address(int fd, char **local_host, char **local_port, char **remote_host, char **remote_port, int host_lookup); void fuzz_fake_send_kexdh_reply(void); // fake IO wrappers #ifndef FUZZ_SKIP_WRAP #define select(nfds, readfds, writefds, exceptfds, timeout) \ wrapfd_select(nfds, readfds, writefds, exceptfds, timeout) #define write(fd, buf, count) wrapfd_write(fd, buf, count) #define read(fd, buf, count) wrapfd_read(fd, buf, count) #define close(fd) wrapfd_close(fd) #endif // FUZZ_SKIP_WRAP struct dropbear_fuzz_options { int fuzzing; // fuzzing input buffer *input; struct dropbear_cipher recv_cipher; struct dropbear_hash recv_mac; int wrapfds; // whether to skip slow bignum maths int skip_kexmaths; // dropbear_exit() jumps back int do_jmp; sigjmp_buf jmp; uid_t pw_uid; gid_t pw_gid; char* pw_name; char* pw_dir; char* pw_shell; char* pw_passwd; }; extern struct dropbear_fuzz_options fuzz; #endif // DROPBEAR_FUZZ #endif /* DROPBEAR_FUZZ_H */