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fuzz: introduce fuzz/fido_fuzz.h #344

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fuzz: introduce fuzz/fido_fuzz.h #344

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15 changes: 15 additions & 0 deletions fuzz/fido_fuzz.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
/* Copyright (C) 2025 Yubico AB - See COPYING */
#ifndef FIDO_FUZZ_H
#define FIDO_FUZZ_H

#include <stdint.h>

/* The following symbols are part of libfido2's fuzzing instrumentation.
* The linked libfido2 library must be built with -DFUZZ=1
*/

extern int prng_up;
void prng_init(unsigned long);
uint32_t uniform_random(uint32_t);

#endif /* FIDO_FUZZ_H */
4 changes: 0 additions & 4 deletions fuzz/fuzz.h
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Expand Up @@ -31,8 +31,4 @@ int unpack_blob(const uint8_t **, size_t *, struct blob *);
int pack_string(uint8_t **, size_t *, const char *);
int unpack_string(const uint8_t **, size_t *, char *);

/* part of libfido2's fuzzing instrumentation, requires build with -DFUZZ=1 */
void prng_init(unsigned long);
uint32_t uniform_random(uint32_t);

#endif
4 changes: 3 additions & 1 deletion fuzz/fuzz_auth.c
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Expand Up @@ -12,9 +12,11 @@
#include <unistd.h>

#include "cfg.h"

#include "fuzz/authfile.h"
#include "fuzz/fido_fuzz.h"
#include "fuzz/fuzz.h"
#include "fuzz/wiredata.h"
#include "fuzz/authfile.h"

#define MUTATE_SEED 0x01
#define MUTATE_PARAM 0x02
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1 change: 1 addition & 0 deletions fuzz/fuzz_format_parsers.c
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Expand Up @@ -10,6 +10,7 @@
#include <string.h>
#include <unistd.h>

#include "fuzz/fido_fuzz.h"
#include "fuzz/fuzz.h"
#include "util.h"

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1 change: 1 addition & 0 deletions fuzz/pack.c
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Expand Up @@ -4,6 +4,7 @@
#include <string.h>
#include <arpa/inet.h>

#include "fuzz/fido_fuzz.h"
#include "fuzz/fuzz.h"

static int do_unpack(const uint8_t **buf, size_t *rem, uint8_t *dst,
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3 changes: 1 addition & 2 deletions fuzz/wrap.c
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Expand Up @@ -17,10 +17,9 @@

#include "debug.h"
#include "drop_privs.h"
#include "fuzz/fido_fuzz.h"
#include "fuzz/fuzz.h"

extern int prng_up;

#ifdef HAVE_PAM_MODUTIL_DROP_PRIV
typedef struct pam_modutil_privs fuzz_privs_t;
#else
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