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UT: implement tests for inspection code

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pull/1473/head
Giuseppe Longo 11 years ago committed by Victor Julien
parent d2657becc9
commit 1f52410d0f
3 changed files with 278 additions and 0 deletions
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274
src/detect-engine-filedata-smtp.c
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@ -47,6 +47,7 @@
#include "app-layer.h"
#include "app-layer-smtp.h"
#include "app-layer-protos.h"
#include "app-layer-parser.h"
#include "conf.h"
#include "conf-yaml-loader.h"
@ -246,3 +247,276 @@ int DetectEngineRunSMTPMpm(DetectEngineCtx *de_ctx,
end:
return cnt;
}
#ifdef UNITTESTS
static int DetectEngineSMTPFiledataTest01(void)
{
uint8_t mimemsg[] = {0x4D, 0x49, 0x4D, 0x45, 0x2D, 0x56, 0x65, 0x72,
0x73, 0x69, 0x6F, 0x6E, 0x3A, 0x20, 0x31, 0x2E,
0x30, 0x0D, 0x0A, 0x43, 0x6F, 0x6E, 0x74, 0x65,
0x6E, 0x74, 0x2D, 0x54, 0x79, 0x70, 0x65, 0x3A,
0x20, 0x74, 0x65, 0x78, 0x74, 0x2F, 0x70, 0x6C,
0x61, 0x69, 0x6E, 0x3B, 0x20, 0x63, 0x68, 0x61,
0x72, 0x73, 0x65, 0x74, 0x3D, 0x55, 0x54, 0x46,
0x2D, 0x38, 0x3B, 0x0D, 0x0A, 0x43, 0x6F, 0x6E,
0x74, 0x65, 0x6E, 0x74, 0x2D, 0x54, 0x72, 0x61,
0x6E, 0x73, 0x66, 0x65, 0x72, 0x2D, 0x45, 0x6E,
0x63, 0x6F, 0x64, 0x69, 0x6E, 0x67, 0x3A, 0x20,
0x37, 0x62, 0x69, 0x74, 0x0D, 0x0A, 0x43, 0x6F,
0x6E, 0x74, 0x65, 0x6E, 0x74, 0x2D, 0x44, 0x69,
0x73, 0x70, 0x6F, 0x73, 0x69, 0x74, 0x69, 0x6F,
0x6E, 0x3A, 0x20, 0x61, 0x74, 0x74, 0x61, 0x63,
0x68, 0x6D, 0x65, 0x6E, 0x74, 0x3B, 0x20, 0x66,
0x69, 0x6C, 0x65, 0x6E, 0x61, 0x6D, 0x65, 0x3D,
0x22, 0x74, 0x65, 0x73, 0x74, 0x2E, 0x74, 0x78,
0x74, 0x22, 0x0D, 0x0A, 0x0D, 0x0A, 0x6d, 0x65,
0x73, 0x73, 0x61, 0x67, 0x65,};
uint32_t mimemsg_len = sizeof(mimemsg) - 1;
TcpSession ssn;
Packet *p;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
SMTPState *smtp_state = NULL;
Flow f;
int result = 0;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.proto = IPPROTO_TCP;
f.flags |= FLOW_IPV4;
f.alstate = SMTPStateAlloc();
MimeDecParseState *state = MimeDecInitParser(&f, NULL);
((MimeDecEntity *)state->stack->top->data)->ctnt_flags = CTNT_IS_ATTACHMENT;
state->body_begin = 1;
if (SMTPProcessDataChunk((uint8_t *)mimemsg, sizeof(mimemsg), state) != 0)
goto end;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
f.alproto = ALPROTO_SMTP;
StreamTcpInitConfig(TRUE);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert smtp any any -> any any "
"(msg:\"file_data smtp test\"; "
"file_data; content:\"message\"; sid:1;)");
if (de_ctx->sig_list == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SCMutexLock(&f.m);
int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_SMTP, STREAM_TOSERVER, mimemsg, mimemsg_len);
if (r != 0) {
printf("AppLayerParse for smtp failed. Returned %d", r);
SCMutexUnlock(&f.m);
goto end;
}
SCMutexUnlock(&f.m);
smtp_state = f.alstate;
if (smtp_state == NULL) {
printf("no smtp state: ");
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sid 1 didn't match but should have\n");
goto end;
}
result = 1;
end:
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
static int DetectEngineSMTPFiledataTest02(void)
{
Signature *s = NULL;
DetectEngineCtx *de_ctx = NULL;
int result = 0;
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
s = DetectEngineAppendSig(de_ctx, "alert smtp any any -> any any "
"(msg:\"file_data smtp test\"; "
"file_data; content:\"message\"; sid:1;)");
if (s == NULL)
goto end;
if (s->flags & SIG_FLAG_TOSERVER)
result = 1;
else if (s->flags & SIG_FLAG_TOCLIENT)
printf("s->flags & SIG_FLAG_TOCLIENT");
end:
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
return result;
}
static int DetectEngineSMTPFiledataTest03(void)
{
uint8_t mimemsg1[] = {0x65, 0x76,};
uint8_t mimemsg2[] = {0x69, 0x6C,};
uint32_t mimemsg1_len = sizeof(mimemsg1) - 1;
uint32_t mimemsg2_len = sizeof(mimemsg2) - 1;
TcpSession ssn;
Packet *p;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
SMTPState *smtp_state = NULL;
Flow f;
int result = 1;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.proto = IPPROTO_TCP;
f.flags |= FLOW_IPV4;
f.alstate = SMTPStateAlloc();
MimeDecParseState *state = MimeDecInitParser(&f, NULL);
((MimeDecEntity *)state->stack->top->data)->ctnt_flags = CTNT_IS_ATTACHMENT;
state->body_begin = 1;
if (SMTPProcessDataChunk((uint8_t *)mimemsg1, sizeof(mimemsg1), state) != 0)
goto end;
if (SMTPProcessDataChunk((uint8_t *)mimemsg2, sizeof(mimemsg2), state) != 0)
goto end;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
f.alproto = ALPROTO_SMTP;
StreamTcpInitConfig(TRUE);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert smtp any any -> any any "
"(msg:\"file_data smtp test\"; "
"file_data; content:\"evil\"; sid:1;)");
if (de_ctx->sig_list == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SCMutexLock(&f.m);
int r = 0;
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_SMTP, STREAM_TOSERVER, mimemsg1, mimemsg1_len);
if (r != 0) {
printf("AppLayerParse for smtp failed. Returned %d", r);
SCMutexUnlock(&f.m);
goto end;
}
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_SMTP, STREAM_TOSERVER, mimemsg2, mimemsg2_len);
if (r != 0) {
printf("AppLayerParse for smtp failed. Returned %d", r);
SCMutexUnlock(&f.m);
goto end;
}
SCMutexUnlock(&f.m);
smtp_state = f.alstate;
if (smtp_state == NULL) {
printf("no smtp state: ");
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sid 1 matched but shouldn't have\n");
goto end;
}
result = 0;
end:
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
#endif /* UNITTESTS */
void DetectEngineSMTPFiledataRegisterTests(void)
{
#ifdef UNITTESTS
UtRegisterTest("DetectEngineSMTPFiledataTest01",
DetectEngineSMTPFiledataTest01, 1);
UtRegisterTest("DetectEngineSMTPFiledataTest02",
DetectEngineSMTPFiledataTest02, 1);
UtRegisterTest("DetectEngineSMTPFiledataTest03",
DetectEngineSMTPFiledataTest03, 0);
#endif /* UNITTESTS */
return;
}

2
src/detect-engine-filedata-smtp.h
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@ -38,4 +38,6 @@ int DetectEngineRunSMTPMpm(DetectEngineCtx *de_ctx,
SMTPState *smtp_state, uint8_t flags,
void *tx, uint64_t idx);
void DetectEngineSMTPFiledataRegisterTests(void);
#endif /* __DETECT_ENGINE_FILEDATA_SMTP_H__ */

2
src/runmode-unittests.c
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@ -51,6 +51,7 @@
#include "detect-engine-state.h"
#include "detect-engine-tag.h"
#include "detect-engine-modbus.h"
#include "detect-engine-filedata-smtp.h"
#include "detect-fast-pattern.h"
#include "flow.h"
#include "flow-timeout.h"
@ -261,6 +262,7 @@ void RunUnittests(int list_unittests, char *regex_arg)
DetectEngineHttpHRHRegisterTests();
DetectEngineInspectModbusRegisterTests();
DetectEngineRegisterTests();
DetectEngineSMTPFiledataRegisterTests();
SCLogRegisterTests();
MagicRegisterTests();
UtilMiscRegisterTests();

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