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();
30  SigTableSetup();
31  }
32  if (cnt++ == 1024) {
34  de_ctx = NULL;
35  cnt = 0;
36  }
37  if (de_ctx == NULL) {
39  BUG_ON(de_ctx == NULL);
40  de_ctx->flags |= DE_QUIET;
41  de_ctx->rule_file = (char *)"fuzzer";
42  }
43 
44  char * buffer = malloc(size+1);
45  if (buffer) {
46  memcpy(buffer, data, size);
47  //null terminate string
48  buffer[size] = 0;
49  Signature *s = SigInit(de_ctx, buffer);
50  free(buffer);
51  if (s && s->next) {
52  SigFree(de_ctx, s->next);
53  s->next = NULL;
54  }
55  SigFree(de_ctx, s);
56  }
57 
58  return 0;
59 }
detect-engine.h
RUNMODE_UNITTEST
@ RUNMODE_UNITTEST
Definition: runmodes.h:41
SigFree
void SigFree(DetectEngineCtx *, Signature *)
Definition: detect-parse.c:1644
DetectEngineCtx_::rule_file
char * rule_file
Definition: detect.h:925
SigTableSetup
void SigTableSetup(void)
Definition: detect-engine-register.c:469
DetectEngineCtx_
main detection engine ctx
Definition: detect.h:835
DetectEngineCtxFree
void DetectEngineCtxFree(DetectEngineCtx *)
Free a DetectEngineCtx::
Definition: detect-engine.c:2580
DE_QUIET
#define DE_QUIET
Definition: detect.h:320
Signature_::next
struct Signature_ * next
Definition: detect.h:664
de_ctx
DetectEngineCtx * de_ctx
Definition: fuzz_siginit.c:17
EngineModeSetIDS
void EngineModeSetIDS(void)
Definition: suricata.c:246
SpmTableSetup
void SpmTableSetup(void)
Definition: util-spm.c:122
util-reference-config.h
SigInit
Signature * SigInit(DetectEngineCtx *de_ctx, const char *sigstr)
Parses a signature and adds it to the Detection Engine Context.
Definition: detect-parse.c:2314
BUG_ON
#define BUG_ON(x)
Definition: suricata-common.h:300
MpmTableSetup
void MpmTableSetup(void)
Definition: util-mpm.c:225
setenv
void setenv(const char *name, const char *value, int overwrite)
cnt
uint32_t cnt
Definition: tmqh-packetpool.h:7
suricata-common.h
run_mode
int run_mode
Definition: suricata.c:176
util-classification-config.h
LLVMFuzzerTestOneInput
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
Definition: fuzz_siginit.c:19
detect-parse.h
Signature_
Signature container.
Definition: detect.h:592
DetectEngineCtxInit
DetectEngineCtx * DetectEngineCtxInit(void)
Definition: detect-engine.c:2541
DetectEngineCtx_::flags
uint8_t flags
Definition: detect.h:837
InitGlobal
int InitGlobal(void)
Global initialization common to all runmodes.
Definition: suricata.c:2845