| 1 | /* |
|---|
| 2 | * zzuf - general purpose fuzzer |
|---|
| 3 | * Copyright (c) 2006 Sam Hocevar <sam@zoy.org> |
|---|
| 4 | * All Rights Reserved |
|---|
| 5 | * |
|---|
| 6 | * $Id: libzzuf.c 1730 2007-02-01 18:19:03Z sam $ |
|---|
| 7 | * |
|---|
| 8 | * This program is free software. It comes without any warranty, to |
|---|
| 9 | * the extent permitted by applicable law. You can redistribute it |
|---|
| 10 | * and/or modify it under the terms of the Do What The Fuck You Want |
|---|
| 11 | * To Public License, Version 2, as published by Sam Hocevar. See |
|---|
| 12 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
|---|
| 13 | */ |
|---|
| 14 | |
|---|
| 15 | /* |
|---|
| 16 | * libzzuf.c: preloaded wrapper library |
|---|
| 17 | */ |
|---|
| 18 | |
|---|
| 19 | #include "config.h" |
|---|
| 20 | #define _GNU_SOURCE |
|---|
| 21 | |
|---|
| 22 | #if defined HAVE_STDINT_H |
|---|
| 23 | # include <stdint.h> |
|---|
| 24 | #elif defined HAVE_INTTYPES_H |
|---|
| 25 | # include <inttypes.h> |
|---|
| 26 | #endif |
|---|
| 27 | #if defined HAVE_WINDOWS_H |
|---|
| 28 | # include <windows.h> |
|---|
| 29 | #endif |
|---|
| 30 | #if defined HAVE_PROCESS_H |
|---|
| 31 | # include <process.h> |
|---|
| 32 | #endif |
|---|
| 33 | #include <stdio.h> |
|---|
| 34 | #include <sys/types.h> |
|---|
| 35 | #if defined HAVE_UNISTD_H |
|---|
| 36 | # include <unistd.h> |
|---|
| 37 | #endif |
|---|
| 38 | #include <stdlib.h> |
|---|
| 39 | #include <string.h> |
|---|
| 40 | #include <fcntl.h> |
|---|
| 41 | |
|---|
| 42 | #include <stdarg.h> |
|---|
| 43 | |
|---|
| 44 | #include "libzzuf.h" |
|---|
| 45 | #include "debug.h" |
|---|
| 46 | #include "fd.h" |
|---|
| 47 | #include "sys.h" |
|---|
| 48 | #include "fuzz.h" |
|---|
| 49 | |
|---|
| 50 | /* Library initialisation shit */ |
|---|
| 51 | void _zz_init(void) __attribute__((constructor)); |
|---|
| 52 | void _zz_fini(void) __attribute__((destructor)); |
|---|
| 53 | #if defined HAVE_WINDOWS_H |
|---|
| 54 | BOOL WINAPI DllMain(HINSTANCE, DWORD, PVOID); |
|---|
| 55 | #endif |
|---|
| 56 | |
|---|
| 57 | /* Global variables */ |
|---|
| 58 | int _zz_ready = 0; |
|---|
| 59 | int _zz_debugfd = -1; |
|---|
| 60 | int _zz_signal = 0; |
|---|
| 61 | int _zz_memory = 0; |
|---|
| 62 | int _zz_network = 0; |
|---|
| 63 | |
|---|
| 64 | /* Library initialisation shit */ |
|---|
| 65 | void _zz_init(void) |
|---|
| 66 | { |
|---|
| 67 | char *tmp, *tmp2; |
|---|
| 68 | |
|---|
| 69 | /* We need this as soon as possible */ |
|---|
| 70 | _zz_mem_init(); |
|---|
| 71 | |
|---|
| 72 | tmp = getenv("ZZUF_DEBUG"); |
|---|
| 73 | if(tmp) |
|---|
| 74 | _zz_debugfd = atoi(tmp); |
|---|
| 75 | |
|---|
| 76 | tmp = getenv("ZZUF_SEED"); |
|---|
| 77 | if(tmp && *tmp) |
|---|
| 78 | _zz_setseed(atol(tmp)); |
|---|
| 79 | |
|---|
| 80 | tmp = getenv("ZZUF_MINRATIO"); |
|---|
| 81 | tmp2 = getenv("ZZUF_MAXRATIO"); |
|---|
| 82 | if(tmp && *tmp && tmp2 && *tmp2) |
|---|
| 83 | _zz_setratio(atof(tmp), atof(tmp2)); |
|---|
| 84 | |
|---|
| 85 | tmp = getenv("ZZUF_AUTOINC"); |
|---|
| 86 | if(tmp && *tmp == '1') |
|---|
| 87 | _zz_setautoinc(); |
|---|
| 88 | |
|---|
| 89 | tmp = getenv("ZZUF_BYTES"); |
|---|
| 90 | if(tmp && *tmp) |
|---|
| 91 | _zz_bytes(tmp); |
|---|
| 92 | |
|---|
| 93 | tmp = getenv("ZZUF_PROTECT"); |
|---|
| 94 | if(tmp && *tmp) |
|---|
| 95 | _zz_protect(tmp); |
|---|
| 96 | |
|---|
| 97 | tmp = getenv("ZZUF_REFUSE"); |
|---|
| 98 | if(tmp && *tmp) |
|---|
| 99 | _zz_refuse(tmp); |
|---|
| 100 | |
|---|
| 101 | tmp = getenv("ZZUF_INCLUDE"); |
|---|
| 102 | if(tmp && *tmp) |
|---|
| 103 | _zz_include(tmp); |
|---|
| 104 | |
|---|
| 105 | tmp = getenv("ZZUF_EXCLUDE"); |
|---|
| 106 | if(tmp && *tmp) |
|---|
| 107 | _zz_exclude(tmp); |
|---|
| 108 | |
|---|
| 109 | tmp = getenv("ZZUF_SIGNAL"); |
|---|
| 110 | if(tmp && *tmp == '1') |
|---|
| 111 | _zz_signal = 1; |
|---|
| 112 | |
|---|
| 113 | tmp = getenv("ZZUF_MEMORY"); |
|---|
| 114 | if(tmp && *tmp == '1') |
|---|
| 115 | _zz_memory = 1; |
|---|
| 116 | |
|---|
| 117 | tmp = getenv("ZZUF_NETWORK"); |
|---|
| 118 | if(tmp && *tmp == '1') |
|---|
| 119 | _zz_network = 1; |
|---|
| 120 | |
|---|
| 121 | _zz_fd_init(); |
|---|
| 122 | _zz_sys_init(); |
|---|
| 123 | |
|---|
| 124 | tmp = getenv("ZZUF_STDIN"); |
|---|
| 125 | if(tmp && *tmp == '1') |
|---|
| 126 | _zz_register(0); |
|---|
| 127 | |
|---|
| 128 | _zz_ready = 1; |
|---|
| 129 | |
|---|
| 130 | debug("libzzuf initialised for PID %li", (long int)getpid()); |
|---|
| 131 | } |
|---|
| 132 | |
|---|
| 133 | /* Deinitialisation */ |
|---|
| 134 | void _zz_fini(void) |
|---|
| 135 | { |
|---|
| 136 | _zz_fd_fini(); |
|---|
| 137 | } |
|---|
| 138 | |
|---|
| 139 | #if defined HAVE_WINDOWS_H |
|---|
| 140 | BOOL WINAPI DllMain(HINSTANCE hinst, DWORD reason, PVOID impLoad) |
|---|
| 141 | { |
|---|
| 142 | (void)hinst; /* unused */ |
|---|
| 143 | (void)impLoad; /* unused */ |
|---|
| 144 | |
|---|
| 145 | switch(reason) |
|---|
| 146 | { |
|---|
| 147 | case DLL_PROCESS_ATTACH: |
|---|
| 148 | _zz_init(); |
|---|
| 149 | break; |
|---|
| 150 | case DLL_PROCESS_DETACH: |
|---|
| 151 | _zz_fini(); |
|---|
| 152 | break; |
|---|
| 153 | } |
|---|
| 154 | |
|---|
| 155 | return TRUE; |
|---|
| 156 | } |
|---|
| 157 | #endif |
|---|
