detect/modbus: remove unittests

These tests are reimplemented in Suricata-Verify

Task: 4911

src/detect-modbus.c

@@ -57,10 +57,6 @@
 
 static int g_modbus_buffer_id = 0;
 
-#ifdef UNITTESTS
-static void DetectModbusRegisterTests(void);
-#endif
-
 /** \internal
  *
  * \brief this function will free memory associated with DetectModbus
@@ -157,190 +153,9 @@ void DetectModbusRegister(void)
     sigmatch_table[DETECT_AL_MODBUS].Setup = DetectModbusSetup;
     sigmatch_table[DETECT_AL_MODBUS].Free = DetectModbusFree;
     sigmatch_table[DETECT_AL_MODBUS].AppLayerTxMatch = DetectModbusMatch;
-#ifdef UNITTESTS
-    sigmatch_table[DETECT_AL_MODBUS].RegisterTests = DetectModbusRegisterTests;
-#endif
 
     DetectAppLayerInspectEngineRegister2(
             "modbus", ALPROTO_MODBUS, SIG_FLAG_TOSERVER, 0, DetectEngineInspectModbus, NULL);
 
     g_modbus_buffer_id = DetectBufferTypeGetByName("modbus");
 }
-
-#ifdef UNITTESTS /* UNITTESTS */
-#include "app-layer-parser.h"
-
-#include "flow-util.h"
-
-#include "util-unittest.h"
-#include "util-unittest-helper.h"
-
-/**
- * Sample data for tests derived from
- * https://github.com/bro/bro/blob/master/testing/btest/Traces/modbus/modbus.trace
- */
-static uint8_t writeSingleCoil[] = {
-    /* Transaction ID */ 0x00, 0x01,
-    /* Protocol ID */ 0x00, 0x00,
-    /* Length */ 0x00, 0x06,
-    /* Unit ID */ 0x0a,
-    /* Function code */ 0x05,
-    /* Read Starting Address */ 0x00, 0x02,
-    /* Data */ 0x00, 0x00
-};
-
-static uint8_t restartCommOption[] = {
-    /* Transaction ID */ 0x00, 0x00,
-    /* Protocol ID */ 0x00, 0x00,
-    /* Length */ 0x00, 0x06,
-    /* Unit ID */ 0x0a,
-    /* Function code */ 0x08,
-    /* Diagnostic Code */ 0x00, 0x01,
-    /* Data */ 0x00, 0x00
-};
-
-/** \test Signature containing an access type. */
-static int DetectModbusTestAccess(void)
-{
-    AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
-    DetectEngineThreadCtx *det_ctx = NULL;
-    DetectEngineCtx *de_ctx = NULL;
-    Flow f;
-    Packet *p = NULL;
-    Signature *s = NULL;
-    TcpSession ssn;
-    ThreadVars tv;
-
-    FAIL_IF_NULL(alp_tctx);
-
-    memset(&tv, 0, sizeof(ThreadVars));
-    memset(&f, 0, sizeof(Flow));
-    memset(&ssn, 0, sizeof(TcpSession));
-
-    p = UTHBuildPacket(restartCommOption, sizeof(restartCommOption), IPPROTO_TCP);
-
-    FLOW_INITIALIZE(&f);
-    f.alproto = ALPROTO_MODBUS;
-    f.protoctx = (void *)&ssn;
-    f.proto = IPPROTO_TCP;
-    f.flags |= FLOW_IPV4;
-
-    p->flow = &f;
-    p->flags |= PKT_HAS_FLOW | PKT_STREAM_EST;
-    p->flowflags |= FLOW_PKT_TOSERVER | FLOW_PKT_ESTABLISHED;
-
-    StreamTcpInitConfig(TRUE);
-
-    de_ctx = DetectEngineCtxInit();
-    FAIL_IF_NULL(de_ctx);
-
-    de_ctx->flags |= DE_QUIET;
-    s = de_ctx->sig_list = SigInit(de_ctx, "alert modbus any any -> any any "
-                                           "(msg:\"Testing modbus code function\"; "
-                                           "modbus: access write; sid:1;)");
-    FAIL_IF_NULL(s);
-
-    SigGroupBuild(de_ctx);
-    DetectEngineThreadCtxInit(&tv, (void *)de_ctx, (void *)&det_ctx);
-
-    FLOWLOCK_WRLOCK(&f);
-    int r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_MODBUS, STREAM_TOSERVER,
-            writeSingleCoil, sizeof(writeSingleCoil));
-    FAIL_IF_NOT(r == 0);
-    FLOWLOCK_UNLOCK(&f);
-
-    FAIL_IF_NULL(f.alstate);
-
-    /* do detect */
-    SigMatchSignatures(&tv, de_ctx, det_ctx, p);
-
-    FAIL_IF_NOT(PacketAlertCheck(p, 1));
-
-    AppLayerParserThreadCtxFree(alp_tctx);
-    DetectEngineThreadCtxDeinit(&tv, det_ctx);
-    SigGroupCleanup(de_ctx);
-    DetectEngineCtxFree(de_ctx);
-
-    StreamTcpFreeConfig(TRUE);
-    FLOW_DESTROY(&f);
-    UTHFreePacket(p);
-    PASS;
-}
-
-/** \test Signature containing a function. */
-static int DetectModbusTestFunction(void)
-{
-    AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
-    DetectEngineThreadCtx *det_ctx = NULL;
-    DetectEngineCtx *de_ctx = NULL;
-    Flow f;
-    Packet *p = NULL;
-    Signature *s = NULL;
-    TcpSession ssn;
-    ThreadVars tv;
-
-    FAIL_IF_NULL(alp_tctx);
-
-    memset(&tv, 0, sizeof(ThreadVars));
-    memset(&f, 0, sizeof(Flow));
-    memset(&ssn, 0, sizeof(TcpSession));
-
-    p = UTHBuildPacket(writeSingleCoil, sizeof(writeSingleCoil), IPPROTO_TCP);
-
-    FLOW_INITIALIZE(&f);
-    f.alproto = ALPROTO_MODBUS;
-    f.protoctx = (void *)&ssn;
-    f.proto = IPPROTO_TCP;
-    f.flags |= FLOW_IPV4;
-
-    p->flow = &f;
-    p->flags |= PKT_HAS_FLOW | PKT_STREAM_EST;
-    p->flowflags |= FLOW_PKT_TOSERVER | FLOW_PKT_ESTABLISHED;
-
-    StreamTcpInitConfig(TRUE);
-
-    de_ctx = DetectEngineCtxInit();
-    FAIL_IF_NULL(de_ctx);
-
-    de_ctx->flags |= DE_QUIET;
-    s = de_ctx->sig_list = SigInit(de_ctx, "alert modbus any any -> any any "
-                                           "(msg:\"Testing modbus code function\"; "
-                                           "modbus: function 8; sid:1;)");
-    FAIL_IF_NULL(s);
-
-    SigGroupBuild(de_ctx);
-    DetectEngineThreadCtxInit(&tv, (void *)de_ctx, (void *)&det_ctx);
-
-    FLOWLOCK_WRLOCK(&f);
-    int r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_MODBUS, STREAM_TOSERVER,
-            restartCommOption, sizeof(restartCommOption));
-    FAIL_IF_NOT(r == 0);
-    FLOWLOCK_UNLOCK(&f);
-
-    FAIL_IF_NULL(f.alstate);
-
-    /* do detect */
-    SigMatchSignatures(&tv, de_ctx, det_ctx, p);
-
-    FAIL_IF_NOT(PacketAlertCheck(p, 1));
-
-    AppLayerParserThreadCtxFree(alp_tctx);
-    DetectEngineThreadCtxDeinit(&tv, det_ctx);
-    SigGroupCleanup(de_ctx);
-    DetectEngineCtxFree(de_ctx);
-
-    StreamTcpFreeConfig(TRUE);
-    FLOW_DESTROY(&f);
-    UTHFreePacket(p);
-    PASS;
-}
-
-/**
- * \brief this function registers unit tests for DetectModbus
- */
-void DetectModbusRegisterTests(void)
-{
-    UtRegisterTest("DetectModbusTestAccess", DetectModbusTestAccess);
-    UtRegisterTest("DetectModbusTestFunction", DetectModbusTestFunction);
-}
-#endif /* UNITTESTS */