1/*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20*/
21
22/**
23 * \file SDL_test_fuzzer.h
24 *
25 * Include file for SDL test framework.
26 *
27 * This code is a part of the SDL2_test library, not the main SDL library.
28 */
29
30/*
31
32 Data generators for fuzzing test data in a reproducible way.
33
34*/
35
36#ifndef SDL_test_fuzzer_h_
37#define SDL_test_fuzzer_h_
38
39#include "begin_code.h"
40/* Set up for C function definitions, even when using C++ */
41#ifdef __cplusplus
42extern "C" {
43#endif
44
45
46/*
47 Based on GSOC code by Markus Kauppila <markus.kauppila@gmail.com>
48*/
49
50
51/**
52 * \file
53 * Note: The fuzzer implementation uses a static instance of random context
54 * internally which makes it thread-UNsafe.
55 */
56
57/**
58 * Initializes the fuzzer for a test
59 *
60 * \param execKey Execution "Key" that initializes the random number generator uniquely for the test.
61 *
62 */
63void SDLTest_FuzzerInit(Uint64 execKey);
64
65
66/**
67 * Returns a random Uint8
68 *
69 * \returns Generated integer
70 */
71Uint8 SDLTest_RandomUint8(void);
72
73/**
74 * Returns a random Sint8
75 *
76 * \returns Generated signed integer
77 */
78Sint8 SDLTest_RandomSint8(void);
79
80
81/**
82 * Returns a random Uint16
83 *
84 * \returns Generated integer
85 */
86Uint16 SDLTest_RandomUint16(void);
87
88/**
89 * Returns a random Sint16
90 *
91 * \returns Generated signed integer
92 */
93Sint16 SDLTest_RandomSint16(void);
94
95
96/**
97 * Returns a random integer
98 *
99 * \returns Generated integer
100 */
101Sint32 SDLTest_RandomSint32(void);
102
103
104/**
105 * Returns a random positive integer
106 *
107 * \returns Generated integer
108 */
109Uint32 SDLTest_RandomUint32(void);
110
111/**
112 * Returns random Uint64.
113 *
114 * \returns Generated integer
115 */
116Uint64 SDLTest_RandomUint64(void);
117
118
119/**
120 * Returns random Sint64.
121 *
122 * \returns Generated signed integer
123 */
124Sint64 SDLTest_RandomSint64(void);
125
126/**
127 * \returns random float in range [0.0 - 1.0[
128 */
129float SDLTest_RandomUnitFloat(void);
130
131/**
132 * \returns random double in range [0.0 - 1.0[
133 */
134double SDLTest_RandomUnitDouble(void);
135
136/**
137 * \returns random float.
138 *
139 */
140float SDLTest_RandomFloat(void);
141
142/**
143 * \returns random double.
144 *
145 */
146double SDLTest_RandomDouble(void);
147
148/**
149 * Returns a random boundary value for Uint8 within the given boundaries.
150 * Boundaries are inclusive, see the usage examples below. If validDomain
151 * is true, the function will only return valid boundaries, otherwise non-valid
152 * boundaries are also possible.
153 * If boundary1 > boundary2, the values are swapped
154 *
155 * Usage examples:
156 * RandomUint8BoundaryValue(10, 20, SDL_TRUE) returns 10, 11, 19 or 20
157 * RandomUint8BoundaryValue(1, 20, SDL_FALSE) returns 0 or 21
158 * RandomUint8BoundaryValue(0, 99, SDL_FALSE) returns 100
159 * RandomUint8BoundaryValue(0, 255, SDL_FALSE) returns 0 (error set)
160 *
161 * \param boundary1 Lower boundary limit
162 * \param boundary2 Upper boundary limit
163 * \param validDomain Should the generated boundary be valid (=within the bounds) or not?
164 *
165 * \returns Random boundary value for the given range and domain or 0 with error set
166 */
167Uint8 SDLTest_RandomUint8BoundaryValue(Uint8 boundary1, Uint8 boundary2, SDL_bool validDomain);
168
169/**
170 * Returns a random boundary value for Uint16 within the given boundaries.
171 * Boundaries are inclusive, see the usage examples below. If validDomain
172 * is true, the function will only return valid boundaries, otherwise non-valid
173 * boundaries are also possible.
174 * If boundary1 > boundary2, the values are swapped
175 *
176 * Usage examples:
177 * RandomUint16BoundaryValue(10, 20, SDL_TRUE) returns 10, 11, 19 or 20
178 * RandomUint16BoundaryValue(1, 20, SDL_FALSE) returns 0 or 21
179 * RandomUint16BoundaryValue(0, 99, SDL_FALSE) returns 100
180 * RandomUint16BoundaryValue(0, 0xFFFF, SDL_FALSE) returns 0 (error set)
181 *
182 * \param boundary1 Lower boundary limit
183 * \param boundary2 Upper boundary limit
184 * \param validDomain Should the generated boundary be valid (=within the bounds) or not?
185 *
186 * \returns Random boundary value for the given range and domain or 0 with error set
187 */
188Uint16 SDLTest_RandomUint16BoundaryValue(Uint16 boundary1, Uint16 boundary2, SDL_bool validDomain);
189
190/**
191 * Returns a random boundary value for Uint32 within the given boundaries.
192 * Boundaries are inclusive, see the usage examples below. If validDomain
193 * is true, the function will only return valid boundaries, otherwise non-valid
194 * boundaries are also possible.
195 * If boundary1 > boundary2, the values are swapped
196 *
197 * Usage examples:
198 * RandomUint32BoundaryValue(10, 20, SDL_TRUE) returns 10, 11, 19 or 20
199 * RandomUint32BoundaryValue(1, 20, SDL_FALSE) returns 0 or 21
200 * RandomUint32BoundaryValue(0, 99, SDL_FALSE) returns 100
201 * RandomUint32BoundaryValue(0, 0xFFFFFFFF, SDL_FALSE) returns 0 (with error set)
202 *
203 * \param boundary1 Lower boundary limit
204 * \param boundary2 Upper boundary limit
205 * \param validDomain Should the generated boundary be valid (=within the bounds) or not?
206 *
207 * \returns Random boundary value for the given range and domain or 0 with error set
208 */
209Uint32 SDLTest_RandomUint32BoundaryValue(Uint32 boundary1, Uint32 boundary2, SDL_bool validDomain);
210
211/**
212 * Returns a random boundary value for Uint64 within the given boundaries.
213 * Boundaries are inclusive, see the usage examples below. If validDomain
214 * is true, the function will only return valid boundaries, otherwise non-valid
215 * boundaries are also possible.
216 * If boundary1 > boundary2, the values are swapped
217 *
218 * Usage examples:
219 * RandomUint64BoundaryValue(10, 20, SDL_TRUE) returns 10, 11, 19 or 20
220 * RandomUint64BoundaryValue(1, 20, SDL_FALSE) returns 0 or 21
221 * RandomUint64BoundaryValue(0, 99, SDL_FALSE) returns 100
222 * RandomUint64BoundaryValue(0, 0xFFFFFFFFFFFFFFFF, SDL_FALSE) returns 0 (with error set)
223 *
224 * \param boundary1 Lower boundary limit
225 * \param boundary2 Upper boundary limit
226 * \param validDomain Should the generated boundary be valid (=within the bounds) or not?
227 *
228 * \returns Random boundary value for the given range and domain or 0 with error set
229 */
230Uint64 SDLTest_RandomUint64BoundaryValue(Uint64 boundary1, Uint64 boundary2, SDL_bool validDomain);
231
232/**
233 * Returns a random boundary value for Sint8 within the given boundaries.
234 * Boundaries are inclusive, see the usage examples below. If validDomain
235 * is true, the function will only return valid boundaries, otherwise non-valid
236 * boundaries are also possible.
237 * If boundary1 > boundary2, the values are swapped
238 *
239 * Usage examples:
240 * RandomSint8BoundaryValue(-10, 20, SDL_TRUE) returns -11, -10, 19 or 20
241 * RandomSint8BoundaryValue(-100, -10, SDL_FALSE) returns -101 or -9
242 * RandomSint8BoundaryValue(SINT8_MIN, 99, SDL_FALSE) returns 100
243 * RandomSint8BoundaryValue(SINT8_MIN, SINT8_MAX, SDL_FALSE) returns SINT8_MIN (== error value) with error set
244 *
245 * \param boundary1 Lower boundary limit
246 * \param boundary2 Upper boundary limit
247 * \param validDomain Should the generated boundary be valid (=within the bounds) or not?
248 *
249 * \returns Random boundary value for the given range and domain or SINT8_MIN with error set
250 */
251Sint8 SDLTest_RandomSint8BoundaryValue(Sint8 boundary1, Sint8 boundary2, SDL_bool validDomain);
252
253
254/**
255 * Returns a random boundary value for Sint16 within the given boundaries.
256 * Boundaries are inclusive, see the usage examples below. If validDomain
257 * is true, the function will only return valid boundaries, otherwise non-valid
258 * boundaries are also possible.
259 * If boundary1 > boundary2, the values are swapped
260 *
261 * Usage examples:
262 * RandomSint16BoundaryValue(-10, 20, SDL_TRUE) returns -11, -10, 19 or 20
263 * RandomSint16BoundaryValue(-100, -10, SDL_FALSE) returns -101 or -9
264 * RandomSint16BoundaryValue(SINT16_MIN, 99, SDL_FALSE) returns 100
265 * RandomSint16BoundaryValue(SINT16_MIN, SINT16_MAX, SDL_FALSE) returns SINT16_MIN (== error value) with error set
266 *
267 * \param boundary1 Lower boundary limit
268 * \param boundary2 Upper boundary limit
269 * \param validDomain Should the generated boundary be valid (=within the bounds) or not?
270 *
271 * \returns Random boundary value for the given range and domain or SINT16_MIN with error set
272 */
273Sint16 SDLTest_RandomSint16BoundaryValue(Sint16 boundary1, Sint16 boundary2, SDL_bool validDomain);
274
275/**
276 * Returns a random boundary value for Sint32 within the given boundaries.
277 * Boundaries are inclusive, see the usage examples below. If validDomain
278 * is true, the function will only return valid boundaries, otherwise non-valid
279 * boundaries are also possible.
280 * If boundary1 > boundary2, the values are swapped
281 *
282 * Usage examples:
283 * RandomSint32BoundaryValue(-10, 20, SDL_TRUE) returns -11, -10, 19 or 20
284 * RandomSint32BoundaryValue(-100, -10, SDL_FALSE) returns -101 or -9
285 * RandomSint32BoundaryValue(SINT32_MIN, 99, SDL_FALSE) returns 100
286 * RandomSint32BoundaryValue(SINT32_MIN, SINT32_MAX, SDL_FALSE) returns SINT32_MIN (== error value)
287 *
288 * \param boundary1 Lower boundary limit
289 * \param boundary2 Upper boundary limit
290 * \param validDomain Should the generated boundary be valid (=within the bounds) or not?
291 *
292 * \returns Random boundary value for the given range and domain or SINT32_MIN with error set
293 */
294Sint32 SDLTest_RandomSint32BoundaryValue(Sint32 boundary1, Sint32 boundary2, SDL_bool validDomain);
295
296/**
297 * Returns a random boundary value for Sint64 within the given boundaries.
298 * Boundaries are inclusive, see the usage examples below. If validDomain
299 * is true, the function will only return valid boundaries, otherwise non-valid
300 * boundaries are also possible.
301 * If boundary1 > boundary2, the values are swapped
302 *
303 * Usage examples:
304 * RandomSint64BoundaryValue(-10, 20, SDL_TRUE) returns -11, -10, 19 or 20
305 * RandomSint64BoundaryValue(-100, -10, SDL_FALSE) returns -101 or -9
306 * RandomSint64BoundaryValue(SINT64_MIN, 99, SDL_FALSE) returns 100
307 * RandomSint64BoundaryValue(SINT64_MIN, SINT64_MAX, SDL_FALSE) returns SINT64_MIN (== error value) and error set
308 *
309 * \param boundary1 Lower boundary limit
310 * \param boundary2 Upper boundary limit
311 * \param validDomain Should the generated boundary be valid (=within the bounds) or not?
312 *
313 * \returns Random boundary value for the given range and domain or SINT64_MIN with error set
314 */
315Sint64 SDLTest_RandomSint64BoundaryValue(Sint64 boundary1, Sint64 boundary2, SDL_bool validDomain);
316
317
318/**
319 * Returns integer in range [min, max] (inclusive).
320 * Min and max values can be negative values.
321 * If Max in smaller than min, then the values are swapped.
322 * Min and max are the same value, that value will be returned.
323 *
324 * \param min Minimum inclusive value of returned random number
325 * \param max Maximum inclusive value of returned random number
326 *
327 * \returns Generated random integer in range
328 */
329Sint32 SDLTest_RandomIntegerInRange(Sint32 min, Sint32 max);
330
331
332/**
333 * Generates random null-terminated string. The minimum length for
334 * the string is 1 character, maximum length for the string is 255
335 * characters and it can contain ASCII characters from 32 to 126.
336 *
337 * Note: Returned string needs to be deallocated.
338 *
339 * \returns Newly allocated random string; or NULL if length was invalid or string could not be allocated.
340 */
341char * SDLTest_RandomAsciiString(void);
342
343
344/**
345 * Generates random null-terminated string. The maximum length for
346 * the string is defined by the maxLength parameter.
347 * String can contain ASCII characters from 32 to 126.
348 *
349 * Note: Returned string needs to be deallocated.
350 *
351 * \param maxLength The maximum length of the generated string.
352 *
353 * \returns Newly allocated random string; or NULL if maxLength was invalid or string could not be allocated.
354 */
355char * SDLTest_RandomAsciiStringWithMaximumLength(int maxLength);
356
357
358/**
359 * Generates random null-terminated string. The length for
360 * the string is defined by the size parameter.
361 * String can contain ASCII characters from 32 to 126.
362 *
363 * Note: Returned string needs to be deallocated.
364 *
365 * \param size The length of the generated string
366 *
367 * \returns Newly allocated random string; or NULL if size was invalid or string could not be allocated.
368 */
369char * SDLTest_RandomAsciiStringOfSize(int size);
370
371/**
372 * Returns the invocation count for the fuzzer since last ...FuzzerInit.
373 */
374int SDLTest_GetFuzzerInvocationCount(void);
375
376/* Ends C function definitions when using C++ */
377#ifdef __cplusplus
378}
379#endif
380#include "close_code.h"
381
382#endif /* SDL_test_fuzzer_h_ */
383
384/* vi: set ts=4 sw=4 expandtab: */
385