suricata
fuzz_siginit.c
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1 /**
2  * @file
3  * @author Philippe Antoine <contact@catenacyber.fr>
4  * fuzz target for SigInit
5  */
6 
7 
8 #include "suricata-common.h"
11 #include "detect-engine.h"
12 #include "detect-parse.h"
13 
14 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
15 
16 static uint32_t cnt = 0;
18 
19 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
20 {
21  if (de_ctx == NULL) {
22  setenv("SC_LOG_OP_IFACE", "file", 0);
23  setenv("SC_LOG_FILE", "/dev/null", 0);
24  //global init
25  InitGlobal();
27  MpmTableSetup();
28  SpmTableSetup();
29  SigTableSetup();
32  }
33  if (cnt++ == 1024) {
35  de_ctx = NULL;
36  cnt = 0;
37  }
38  if (de_ctx == NULL) {
40  BUG_ON(de_ctx == NULL);
41  de_ctx->flags |= DE_QUIET;
42  de_ctx->rule_file = (char *)"fuzzer";
43  }
44 
45  char * buffer = malloc(size+1);
46  if (buffer) {
47  memcpy(buffer, data, size);
48  //null terminate string
49  buffer[size] = 0;
50  Signature *s = SigInit(de_ctx, buffer);
51  free(buffer);
52  if (s && s->next) {
53  SigFree(de_ctx, s->next);
54  s->next = NULL;
55  }
56  SigFree(de_ctx, s);
57  }
58 
59  return 0;
60 }
detect-engine.h
SCReferenceConfInit
void SCReferenceConfInit(void)
Definition: util-reference-config.c:56
RUNMODE_UNITTEST
@ RUNMODE_UNITTEST
Definition: runmodes.h:39
SigFree
void SigFree(DetectEngineCtx *, Signature *)
Definition: detect-parse.c:1381
DetectEngineCtx_::rule_file
char * rule_file
Definition: detect.h:871
SigTableSetup
void SigTableSetup(void)
Definition: detect-engine-register.c:427
SigInit
Signature * SigInit(DetectEngineCtx *, const char *)
Parses a signature and adds it to the Detection Engine Context.
Definition: detect-parse.c:2056
DetectEngineCtx_
main detection engine ctx
Definition: detect.h:767
DetectEngineCtxFree
void DetectEngineCtxFree(DetectEngineCtx *)
Free a DetectEngineCtx::
Definition: detect-engine.c:2093
DE_QUIET
#define DE_QUIET
Definition: detect.h:294
Signature_::next
struct Signature_ * next
Definition: detect.h:600
de_ctx
DetectEngineCtx * de_ctx
Definition: fuzz_siginit.c:17
SpmTableSetup
void SpmTableSetup(void)
Definition: util-spm.c:123
util-reference-config.h
BUG_ON
#define BUG_ON(x)
Definition: suricata-common.h:282
MpmTableSetup
void MpmTableSetup(void)
Definition: util-mpm.c:276
setenv
void setenv(const char *name, const char *value, int overwrite)
suricata-common.h
run_mode
int run_mode
Definition: suricata.c:201
util-classification-config.h
SCClassConfInit
void SCClassConfInit(void)
Definition: util-classification-config.c:64
LLVMFuzzerTestOneInput
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
Definition: fuzz_siginit.c:19
detect-parse.h
Signature_
Signature container.
Definition: detect.h:528
DetectEngineCtxInit
DetectEngineCtx * DetectEngineCtxInit(void)
Definition: detect-engine.c:2048
DetectEngineCtx_::flags
uint8_t flags
Definition: detect.h:768
InitGlobal
int InitGlobal(void)
Global initialization common to all runmodes.
Definition: suricata.c:2671