/** Copyright (c) 2009 Open Information Security Foundation. ** \author Pablo Rincon ** Flowvar management for integer types, part of the detection engine ** Keyword: flowint **/ #include "eidps-common.h" #include "decode.h" #include "detect.h" #include "threads.h" #include "flow.h" #include "flow-var.h" #include "detect-flowint.h" #include "util-binsearch.h" #include "util-var-name.h" #include "util-debug.h" #include "util-unittest.h" #include "detect-parse.h" #include "detect-engine.h" #include "detect-engine-mpm.h" #include /* for UINT32_MAX */ /* name modifiers value */ #define PARSE_REGEX "^\\s*([a-zA-Z][\\w\\d_]+),\\s*([+=-]{1}|==|!=|<|<=|>|>=|isset)\\s*,?\\s*([a-zA-Z][\\w\\d]+|[\\d]{1,10})?\\s*$" /* Varnames must begin with a letter */ static pcre *parse_regex; static pcre_extra *parse_regex_study; int DetectFlowintMatch (ThreadVars *, DetectEngineThreadCtx *, Packet *, Signature *, SigMatch *); int DetectFlowintSetup (DetectEngineCtx *, Signature *, SigMatch *, char *); void DetectFlowintFree (void *); void DetectFlowintRegisterTests (void); void DetectFlowintRegister (void) { sigmatch_table[DETECT_FLOWINT].name = "flowint"; sigmatch_table[DETECT_FLOWINT].Match = DetectFlowintMatch; sigmatch_table[DETECT_FLOWINT].Setup = DetectFlowintSetup; sigmatch_table[DETECT_FLOWINT].Free = DetectFlowintFree; sigmatch_table[DETECT_FLOWINT].RegisterTests = DetectFlowintRegisterTests; const char *eb; int eo; int opts = 0; parse_regex = pcre_compile (PARSE_REGEX, opts, &eb, &eo, NULL); if (parse_regex == NULL) { SCLogDebug ("pcre compile of \"%s\" failed at offset %" PRId32 ": %s", PARSE_REGEX, eo, eb); goto error; } parse_regex_study = pcre_study (parse_regex, 0, &eb); if (eb != NULL) { SCLogDebug ("pcre study failed: %s", eb); goto error; } return; error: return; } /** * \brief This function is used to create a flowint, add/substract values, * compare it with other flowints, etc * * \param t pointer to thread vars * \param det_ctx pointer to the pattern matcher thread * \param p pointer to the current packet * \param s pointer to the current Signature * \param m pointer to the sigmatch that we will cast into DetectFlowintData * * \retval 0 no match, when a var doesn't exist * \retval 1 match, when a var is initialized well, add/substracted, or a true * condition */ int DetectFlowintMatch (ThreadVars *t, DetectEngineThreadCtx *det_ctx, Packet *p, Signature *s, SigMatch *m) { DetectFlowintData *sfd = (DetectFlowintData *) m->ctx; FlowVar *fv; FlowVar *fvt; uint32_t targetval; if (sfd->targettype == FLOWINT_TARGET_VAR) { sfd->target.tvar.idx = VariableNameGetIdx (det_ctx->de_ctx, sfd->target.tvar.name, DETECT_FLOWINT); fvt = FlowVarGet (p->flow, sfd->target.tvar.idx); if (fvt == NULL) /* We don't have that variable initialized yet */ /* so now we need to determine what to do... */ return 0; //targetval = 0; else targetval = fvt->data.fv_int.value; } else targetval = sfd->target.value; SCLogDebug ("Our var %s is at idx: %"PRIu16"", sfd->name, sfd->idx); if (sfd->modifier == FLOWINT_MODIFIER_SET) { FlowVarAddInt (p->flow, sfd->idx, targetval); SCLogDebug ("Setting %s = %u", sfd->name, targetval); return 1; } fv = FlowVarGet (p->flow, sfd->idx); if (fv != NULL && fv->datatype == FLOWVAR_TYPE_INT) { if (sfd->modifier == FLOWINT_MODIFIER_ADD) { SCLogDebug ("Adding %u to %s", targetval, sfd->name); FlowVarAddInt (p->flow, sfd->idx, fv->data.fv_int.value + targetval); return 1; } if (sfd->modifier == FLOWINT_MODIFIER_SUB) { SCLogDebug ("Substracting %u to %s", targetval, sfd->name); FlowVarAddInt (p->flow, sfd->idx, fv->data.fv_int.value - targetval); return 1; } switch (sfd->modifier) { case FLOWINT_MODIFIER_EQ: SCLogDebug ("( %u EQ %u )", fv->data.fv_int.value, targetval); return fv->data.fv_int.value == targetval; break; case FLOWINT_MODIFIER_NE: SCLogDebug ("( %u NE %u )", fv->data.fv_int.value, targetval); return fv->data.fv_int.value != targetval; break; case FLOWINT_MODIFIER_LT: SCLogDebug ("( %u LT %u )", fv->data.fv_int.value, targetval); return fv->data.fv_int.value < targetval; break; case FLOWINT_MODIFIER_LE: SCLogDebug ("( %u LE %u )", fv->data.fv_int.value, targetval); return fv->data.fv_int.value <= targetval; break; case FLOWINT_MODIFIER_GT: SCLogDebug ("( %u GT %u )", fv->data.fv_int.value, targetval); return fv->data.fv_int.value > targetval; break; case FLOWINT_MODIFIER_GE: SCLogDebug ("( %u GE %u )", fv->data.fv_int.value, targetval); return fv->data.fv_int.value >= targetval; break; default: SCLogDebug ("Unknown Modifier!"); exit (EXIT_FAILURE); } } else { SCLogDebug ("Var not found!"); /* It doesn't exist because it wasn't set * or it is a string var, we can't compare */ return 0; /* TODO: Add a keyword "isset" */ } /* It shouldn't reach this */ return 0; } /** * \brief This function is used to parse a flowint option * * \param de_ctx pointer to the engine context * \param rawstr pointer to the string holding the options * * \retval NULL if invalid option * \retval DetectFlowintData pointer with the flowint parsed */ DetectFlowintData *DetectFlowintParse (DetectEngineCtx *de_ctx, char *rawstr) { DetectFlowintData *sfd = NULL; char *str = rawstr; char *varname = NULL; char *varval = NULL; #define MAX_SUBSTRINGS 30 int ret = 0, res = 0; int ov[MAX_SUBSTRINGS]; uint8_t modifier = FLOWINT_MODIFIER_UNKNOWN; unsigned long long value_long = 0; uint8_t dubbed = 0; const char *str_ptr; ret = pcre_exec (parse_regex, parse_regex_study, rawstr, strlen (rawstr), 0, 0, ov, MAX_SUBSTRINGS); if (ret < 3 || ret > 4) { SCLogDebug ("ERROR: \"%s\" is not a valid setting for flowint (ret = %d).", rawstr, ret); return NULL; } /* Get our flowint varname */ res = pcre_get_substring ( (char *) rawstr, ov, MAX_SUBSTRINGS, 1, &str_ptr); if (res < 0) { SCLogDebug ("DetectFlowintParse: pcre_get_substring failed"); return NULL; } varname = (char *) str_ptr; res = pcre_get_substring ( (char *) rawstr, ov, MAX_SUBSTRINGS, 2, &str_ptr); if (res < 0) { SCLogDebug ("DetectFlowintParse: pcre_get_substring failed"); return NULL; } /* Get the modifier */ if (strcmp ("=", str_ptr) == 0) modifier = FLOWINT_MODIFIER_SET; if (strcmp ("+", str_ptr) == 0) modifier = FLOWINT_MODIFIER_ADD; if (strcmp ("-", str_ptr) == 0) modifier = FLOWINT_MODIFIER_SUB; if (strcmp ("<", str_ptr) == 0) modifier = FLOWINT_MODIFIER_LT; if (strcmp ("<=", str_ptr) == 0) modifier = FLOWINT_MODIFIER_LE; if (strcmp ("!=", str_ptr) == 0) modifier = FLOWINT_MODIFIER_NE; if (strcmp ("==", str_ptr) == 0) modifier = FLOWINT_MODIFIER_EQ; if (strcmp (">=", str_ptr) == 0) modifier = FLOWINT_MODIFIER_GE; if (strcmp (">", str_ptr) == 0) modifier = FLOWINT_MODIFIER_GT; if (strcmp ("isset", str_ptr) == 0) modifier = FLOWINT_MODIFIER_IS; if (modifier == FLOWINT_MODIFIER_UNKNOWN) goto error; sfd = malloc (sizeof (DetectFlowintData)); if (sfd == NULL) { SCLogDebug ("DetectFlowintSetup malloc failed"); goto error; } /* If we need another arg, check it out (isset doesn't need another arg) */ if (modifier != FLOWINT_MODIFIER_IS) { res = pcre_get_substring ( (char *) rawstr, ov, MAX_SUBSTRINGS, 3, &str_ptr); varval = (char *) str_ptr; if (res < 0 || strcmp(varval,"") == 0) { SCLogDebug ("DetectFlowintParse: pcre_get_substring failed"); return NULL; } printf("varval = %s!!!\n", varval); /* get the target value to operate with * (it should be a value or another var) */ if (varval[0] == '\"' && varval[strlen (varval)-1] == '\"') { str = strdup (varval + 1); str[strlen (varval)-2] = '\0'; dubbed = 1; if (str[0] >= '0' && str[0] <= '9') { /* is digit, look at the regexp */ sfd->targettype = FLOWINT_TARGET_VAL; value_long = atoll (str); if (value_long > UINT32_MAX) { SCLogDebug ("DetectFlowintParse: Cannot load this value." " Values should be between 0 and %"PRIu32, UINT32_MAX); goto error; } } else { sfd->targettype = FLOWINT_TARGET_VAR; sfd->target.tvar.name = strdup (varval); } } else { if (varval[0] >= '0' && varval[0] <= '9') { sfd->targettype = FLOWINT_TARGET_VAL; value_long = atoll (varval); if (value_long > UINT32_MAX) { SCLogDebug ("DetectFlowintParse: Cannot load this value." " Values should be between 0 and %"PRIu32, UINT32_MAX); goto error; } } else { sfd->targettype = FLOWINT_TARGET_VAR; sfd->target.tvar.name = strdup (varval); } } } else { sfd->targettype = FLOWINT_TARGET_SELF; } /* Set the name of the origin var to modify/compared with the target */ sfd->name = strdup (varname); if (de_ctx != NULL) sfd->idx = VariableNameGetIdx (de_ctx, varname, DETECT_FLOWINT); sfd->target.value = (uint32_t) value_long; sfd->modifier = modifier; if (dubbed == 1) free (str); return sfd; error: if (dubbed == 1) free (str); if (sfd != NULL) free (sfd); return NULL; } /** * \brief This function is used to set up the SigMatch holding the flowint opt * * \param de_ctx pointer to the engine context * \param s pointer to the current Signature * \param m pointer to the sigmatch that we will cast into DetectFlowintData * \param rawstr pointer to the string holding the options * * \retval 0 if all is ok * \retval -1 if we find any problem */ int DetectFlowintSetup (DetectEngineCtx *de_ctx, Signature *s, SigMatch *m, char *rawstr) { DetectFlowintData *sfd = NULL; SigMatch *sm = NULL; sfd = DetectFlowintParse (de_ctx, rawstr); if (sfd == NULL) goto error; sfd->idx = VariableNameGetIdx (de_ctx, sfd->name, DETECT_FLOWINT); /* Okay so far so good, lets get this into a SigMatch * and put it in the Signature. */ sm = SigMatchAlloc(); if (sm == NULL) goto error; sm->type = DETECT_FLOWINT; sm->ctx = (void *) sfd; SigMatchAppend (s, m, sm); return 0; error: if (sfd) DetectFlowintFree (sfd); if (sm) free (sm); return -1; } /** * \brief This function is used to free the data of DetectFlowintData */ void DetectFlowintFree (void *tmp) { DetectFlowintData *sfd = (DetectFlowintData*) tmp; if (sfd != NULL) { if (sfd->name != NULL) free (sfd->name); if (sfd->targettype == FLOWINT_TARGET_VAR) if (sfd->target.tvar.name != NULL) free (sfd->target.tvar.name); free (sfd); } } /** * \brief This is a helper funtion used for debugging purposes */ void DetectFlowintPrintData (DetectFlowintData *sfd) { if (sfd == NULL) { SCLogDebug ("DetectFlowintPrintData: Error, DetectFlowintData == NULL!"); return; } SCLogDebug ("Varname: %s, modifier: %"PRIu8", idx: %"PRIu16" Target: ", sfd->name, sfd->modifier, sfd->idx); switch (sfd->targettype) { case FLOWINT_TARGET_VAR: SCLogDebug ("target_var: %s, target_idx: %"PRIu16, sfd->target.tvar.name, sfd->target.tvar.idx); break; case FLOWINT_TARGET_VAL: SCLogDebug ("Value: %"PRIu32"; ", sfd->target.value); break; default : SCLogDebug ("DetectFlowintPrintData: Error, Targettype not known!"); } } #ifdef UNITTESTS /** * \test DetectFlowintTestParseVal01 is a test to make sure that we set the * DetectFlowint correctly for setting a valid target value */ int DetectFlowintTestParseVal01 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar,=,35"); DetectFlowintPrintData (sfd); if (sfd != NULL && sfd->target.value == 35 && !strcmp (sfd->name, "myvar") && sfd->modifier == FLOWINT_MODIFIER_SET) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVar01 is a test to make sure that we set the * DetectFlowint correctly for setting a valid target variable */ int DetectFlowintTestParseVar01 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar,=,targetvar"); DetectFlowintPrintData (sfd); if (sfd != NULL && !strcmp (sfd->name, "myvar") && sfd->targettype == FLOWINT_TARGET_VAR && sfd->target.tvar.name != NULL && !strcmp (sfd->target.tvar.name, "targetvar") && sfd->modifier == FLOWINT_MODIFIER_SET) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVal02 is a test to make sure that we set the * DetectFlowint correctly for adding a valid target value */ int DetectFlowintTestParseVal02 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar,+,35"); DetectFlowintPrintData (sfd); if (sfd != NULL && sfd->target.value == 35 && !strcmp (sfd->name, "myvar") && sfd->modifier == FLOWINT_MODIFIER_ADD) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVar02 is a test to make sure that we set the * DetectFlowint correctly for adding a valid target variable */ int DetectFlowintTestParseVar02 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar,+,targetvar"); DetectFlowintPrintData (sfd); if (sfd != NULL && !strcmp (sfd->name, "myvar") && sfd->targettype == FLOWINT_TARGET_VAR && sfd->target.tvar.name != NULL && !strcmp (sfd->target.tvar.name, "targetvar") && sfd->modifier == FLOWINT_MODIFIER_ADD) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVal03 is a test to make sure that we set the * DetectFlowint correctly for substract a valid target value */ int DetectFlowintTestParseVal03 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar,-,35"); DetectFlowintPrintData (sfd); if (sfd != NULL && sfd->target.value == 35 && !strcmp (sfd->name, "myvar") && sfd->modifier == FLOWINT_MODIFIER_SUB) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVar03 is a test to make sure that we set the * DetectFlowint correctly for substract a valid target variable */ int DetectFlowintTestParseVar03 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar,-,targetvar"); DetectFlowintPrintData (sfd); if (sfd != NULL && !strcmp (sfd->name, "myvar") && sfd->targettype == FLOWINT_TARGET_VAR && sfd->target.tvar.name != NULL && !strcmp (sfd->target.tvar.name, "targetvar") && sfd->modifier == FLOWINT_MODIFIER_SUB) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVal04 is a test to make sure that we set the * DetectFlowint correctly for checking if equal to a valid target value */ int DetectFlowintTestParseVal04 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar,==,35"); DetectFlowintPrintData (sfd); if (sfd != NULL && sfd->target.value == 35 && !strcmp (sfd->name, "myvar") && sfd->modifier == FLOWINT_MODIFIER_EQ) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVar04 is a test to make sure that we set the * DetectFlowint correctly for checking if equal to a valid target variable */ int DetectFlowintTestParseVar04 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar,==,targetvar"); DetectFlowintPrintData (sfd); if (sfd != NULL && !strcmp (sfd->name, "myvar") && sfd->targettype == FLOWINT_TARGET_VAR && sfd->target.tvar.name != NULL && !strcmp (sfd->target.tvar.name, "targetvar") && sfd->modifier == FLOWINT_MODIFIER_EQ) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVal05 is a test to make sure that we set the * DetectFlowint correctly for cheking if not equal to a valid target value */ int DetectFlowintTestParseVal05 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar,!=,35"); DetectFlowintPrintData (sfd); if (sfd != NULL && sfd->target.value == 35 && !strcmp (sfd->name, "myvar") && sfd->modifier == FLOWINT_MODIFIER_NE) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVar05 is a test to make sure that we set the * DetectFlowint correctly for checking if not equal to a valid target variable */ int DetectFlowintTestParseVar05 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar,!=,targetvar"); DetectFlowintPrintData (sfd); if (sfd != NULL && !strcmp (sfd->name, "myvar") && sfd->targettype == FLOWINT_TARGET_VAR && sfd->target.tvar.name != NULL && !strcmp (sfd->target.tvar.name, "targetvar") && sfd->modifier == FLOWINT_MODIFIER_NE) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVal06 is a test to make sure that we set the * DetectFlowint correctly for cheking if greater than a valid target value */ int DetectFlowintTestParseVal06 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar, >,35"); DetectFlowintPrintData (sfd); if (sfd != NULL && sfd->target.value == 35 && !strcmp (sfd->name, "myvar") && sfd->modifier == FLOWINT_MODIFIER_GT) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVar06 is a test to make sure that we set the * DetectFlowint correctly for checking if greater than a valid target variable */ int DetectFlowintTestParseVar06 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar, >,targetvar"); DetectFlowintPrintData (sfd); if (sfd != NULL && !strcmp (sfd->name, "myvar") && sfd->targettype == FLOWINT_TARGET_VAR && sfd->target.tvar.name != NULL && !strcmp (sfd->target.tvar.name, "targetvar") && sfd->modifier == FLOWINT_MODIFIER_GT) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVal07 is a test to make sure that we set the * DetectFlowint correctly for cheking if greater or equal than a valid target value */ int DetectFlowintTestParseVal07 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar, >= ,35"); DetectFlowintPrintData (sfd); if (sfd != NULL && sfd->target.value == 35 && !strcmp (sfd->name, "myvar") && sfd->modifier == FLOWINT_MODIFIER_GE) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVar07 is a test to make sure that we set the * DetectFlowint correctly for checking if greater or equal than a valid target variable */ int DetectFlowintTestParseVar07 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar, >= ,targetvar"); DetectFlowintPrintData (sfd); if (sfd != NULL && !strcmp (sfd->name, "myvar") && sfd->targettype == FLOWINT_TARGET_VAR && sfd->target.tvar.name != NULL && !strcmp (sfd->target.tvar.name, "targetvar") && sfd->modifier == FLOWINT_MODIFIER_GE) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVal08 is a test to make sure that we set the * DetectFlowint correctly for cheking if lower or equal than a valid target value */ int DetectFlowintTestParseVal08 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar, <= ,35"); DetectFlowintPrintData (sfd); if (sfd != NULL && sfd->target.value == 35 && !strcmp (sfd->name, "myvar") && sfd->modifier == FLOWINT_MODIFIER_LE) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVar08 is a test to make sure that we set the * DetectFlowint correctly for checking if lower or equal than a valid target variable */ int DetectFlowintTestParseVar08 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar, <= ,targetvar"); DetectFlowintPrintData (sfd); if (sfd != NULL && !strcmp (sfd->name, "myvar") && sfd->targettype == FLOWINT_TARGET_VAR && sfd->target.tvar.name != NULL && !strcmp (sfd->target.tvar.name, "targetvar") && sfd->modifier == FLOWINT_MODIFIER_LE) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVal09 is a test to make sure that we set the * DetectFlowint correctly for cheking if lower than a valid target value */ int DetectFlowintTestParseVal09 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar, < ,35"); DetectFlowintPrintData (sfd); if (sfd != NULL && sfd->target.value == 35 && !strcmp (sfd->name, "myvar") && sfd->modifier == FLOWINT_MODIFIER_LT) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVar09 is a test to make sure that we set the * DetectFlowint correctly for checking if lower than a valid target variable */ int DetectFlowintTestParseVar09 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar, < ,targetvar"); DetectFlowintPrintData (sfd); if (sfd != NULL && !strcmp (sfd->name, "myvar") && sfd->targettype == FLOWINT_TARGET_VAR && sfd->target.tvar.name != NULL && !strcmp (sfd->target.tvar.name, "targetvar") && sfd->modifier == FLOWINT_MODIFIER_LT) { result = 1; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseVar09 is a test to make sure that handle the * isset keyword correctly */ int DetectFlowintTestParseIsset10 (void) { int result = 0; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar, isset"); DetectFlowintPrintData (sfd); if (sfd != NULL && !strcmp (sfd->name, "myvar") && sfd->targettype == FLOWINT_TARGET_SELF && sfd->modifier == FLOWINT_MODIFIER_IS) { result &= 1; } else { result = 0; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** * \test DetectFlowintTestParseInvalidSyntaxis01 is a test to make sure that we dont set the * DetectFlowint for a invalid input option */ int DetectFlowintTestParseInvalidSyntaxis01 (void) { int result = 1; DetectFlowintData *sfd = NULL; DetectEngineCtx *de_ctx; de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) goto error; de_ctx->flags |= DE_QUIET; sfd = DetectFlowintParse (de_ctx, "myvar,=,9999999999"); if (sfd != NULL) { SCLogDebug ("DetectFlowintTestParseInvalidSyntaxis01: ERROR: invalid option at myvar,=,9532458716234857"); result = 0; } if (sfd) DetectFlowintFree (sfd); sfd = DetectFlowintParse (de_ctx, "myvar,=,45targetvar"); if (sfd != NULL) { SCLogDebug ("DetectFlowintTestParseInvalidSyntaxis01: ERROR: invalid option at myvar,=,45targetvar "); result = 0; } if (sfd) DetectFlowintFree (sfd); sfd = DetectFlowintParse (de_ctx, "657myvar,=,targetvar"); if (sfd != NULL) { SCLogDebug ("DetectFlowintTestParseInvalidSyntaxis01: ERROR: invalid option at 657myvar,=,targetvar "); result = 0; } if (sfd) DetectFlowintFree (sfd); sfd = DetectFlowintParse (de_ctx, "myvar,=<,targetvar"); if (sfd != NULL) { SCLogDebug ("DetectFlowintTestParseInvalidSyntaxis01: ERROR: invalid option at myvar,=<,targetvar "); result = 0; } if (sfd) DetectFlowintFree (sfd); sfd = DetectFlowintParse (de_ctx, "myvar,===,targetvar"); if (sfd != NULL) { SCLogDebug ("DetectFlowintTestParseInvalidSyntaxis01: ERROR: invalid option at myvar,===,targetvar "); result = 0; } if (sfd) DetectFlowintFree (sfd); sfd = DetectFlowintParse (de_ctx, "myvar,=="); if (sfd != NULL) { SCLogDebug ("DetectFlowintTestParseInvalidSyntaxis01: ERROR: invalid option at myvar,=="); result = 0; } if (sfd) DetectFlowintFree (sfd); sfd = DetectFlowintParse (de_ctx, "myvar,"); if (sfd != NULL) { SCLogDebug ("DetectFlowintTestParseInvalidSyntaxis01: ERROR: invalid option at myvar,"); result = 0; } if (sfd) DetectFlowintFree (sfd); sfd = DetectFlowintParse (de_ctx, "myvar"); if (sfd != NULL) { SCLogDebug ("DetectFlowintTestParseInvalidSyntaxis01: ERROR: invalid option at myvar"); result = 0; } if (sfd) DetectFlowintFree (sfd); DetectEngineCtxFree (de_ctx); return result; error: if (de_ctx) DetectEngineCtxFree (de_ctx); return result; } /** \test DetectFlowintTestPacket01Real * \brief Set a counter when we see a content:"GET" * and increment it by 2 if we match a "Unauthorized" * When it reach 3 (with the last +2), another counter starts * and when that counter reach 6 packets. * * All the Signatures generate an alert (its for testing) * but the ignature that increment the second counter +1, that has * a "noalert", so we can do all increments * silently until we reach 6 next packets counted */ int DetectFlowintTestPacket01Real() { int result = 1; uint8_t pkt1[] = { 0x00, 0x1a, 0x2b, 0x19, 0x52, 0xa8, 0x00, 0x13, 0x20, 0x65, 0x1a, 0x9e, 0x08, 0x00, 0x45, 0x00, 0x00, 0x3c, 0xc2, 0x26, 0x40, 0x00, 0x40, 0x06, 0xf4, 0x67, 0xc0, 0xa8, 0x01, 0xdc, 0xc0, 0xa8, 0x01, 0x01, 0xe7, 0xf5, 0x00, 0x50, 0x17, 0x51, 0x82, 0xb5, 0x00, 0x00, 0x00, 0x00, 0xa0, 0x02, 0x16, 0xd0, 0xe8, 0xb0, 0x00, 0x00, 0x02, 0x04, 0x05, 0xb4, 0x04, 0x02, 0x08, 0x0a, 0x01, 0x72, 0x40, 0x93, 0x00, 0x00, 0x00, 0x00, 0x01, 0x03, 0x03, 0x07 }; uint8_t pkt2[] = { 0x00, 0x13, 0x20, 0x65, 0x1a, 0x9e, 0x00, 0x1a, 0x2b, 0x19, 0x52, 0xa8, 0x08, 0x00, 0x45, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x40, 0x00, 0x40, 0x06, 0xb6, 0x8e, 0xc0, 0xa8, 0x01, 0x01, 0xc0, 0xa8, 0x01, 0xdc, 0x00, 0x50, 0xe7, 0xf5, 0x21, 0x04, 0x8b, 0xdd, 0x17, 0x51, 0x82, 0xb6, 0xa0, 0x12, 0x16, 0x80, 0x17, 0x8a, 0x00, 0x00, 0x02, 0x04, 0x05, 0xac, 0x04, 0x02, 0x08, 0x0a, 0x01, 0x29, 0x23, 0x63, 0x01, 0x72, 0x40, 0x93, 0x01, 0x03, 0x03, 0x07 }; uint8_t pkt3[] = { 0x00, 0x1a, 0x2b, 0x19, 0x52, 0xa8, 0x00, 0x13, 0x20, 0x65, 0x1a, 0x9e, 0x08, 0x00, 0x45, 0x00, 0x00, 0x34, 0xc2, 0x27, 0x40, 0x00, 0x40, 0x06, 0xf4, 0x6e, 0xc0, 0xa8, 0x01, 0xdc, 0xc0, 0xa8, 0x01, 0x01, 0xe7, 0xf5, 0x00, 0x50, 0x17, 0x51, 0x82, 0xb6, 0x21, 0x04, 0x8b, 0xde, 0x80, 0x10, 0x00, 0x2e, 0x5c, 0xa0, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x01, 0x72, 0x40, 0x93, 0x01, 0x29, 0x23, 0x63 }; uint8_t pkt4[] = { 0x00, 0x1a, 0x2b, 0x19, 0x52, 0xa8, 0x00, 0x13, 0x20, 0x65, 0x1a, 0x9e, 0x08, 0x00, 0x45, 0x00, 0x01, 0x12, 0xc2, 0x28, 0x40, 0x00, 0x40, 0x06, 0xf3, 0x8f, 0xc0, 0xa8, 0x01, 0xdc, 0xc0, 0xa8, 0x01, 0x01, 0xe7, 0xf5, 0x00, 0x50, 0x17, 0x51, 0x82, 0xb6, 0x21, 0x04, 0x8b, 0xde, 0x80, 0x18, 0x00, 0x2e, 0x24, 0x39, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x01, 0x72, 0x40, 0x93, 0x01, 0x29, 0x23, 0x63, 0x47, 0x45, 0x54, 0x20, 0x2f, 0x20, 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x30, 0x0d, 0x0a, 0x48, 0x6f, 0x73, 0x74, 0x3a, 0x20, 0x31, 0x39, 0x32, 0x2e, 0x31, 0x36, 0x38, 0x2e, 0x31, 0x2e, 0x31, 0x0d, 0x0a, 0x41, 0x63, 0x63, 0x65, 0x70, 0x74, 0x3a, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x68, 0x74, 0x6d, 0x6c, 0x2c, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x70, 0x6c, 0x61, 0x69, 0x6e, 0x2c, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x63, 0x73, 0x73, 0x2c, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x73, 0x67, 0x6d, 0x6c, 0x2c, 0x20, 0x2a, 0x2f, 0x2a, 0x3b, 0x71, 0x3d, 0x30, 0x2e, 0x30, 0x31, 0x0d, 0x0a, 0x41, 0x63, 0x63, 0x65, 0x70, 0x74, 0x2d, 0x45, 0x6e, 0x63, 0x6f, 0x64, 0x69, 0x6e, 0x67, 0x3a, 0x20, 0x67, 0x7a, 0x69, 0x70, 0x2c, 0x20, 0x62, 0x7a, 0x69, 0x70, 0x32, 0x0d, 0x0a, 0x41, 0x63, 0x63, 0x65, 0x70, 0x74, 0x2d, 0x4c, 0x61, 0x6e, 0x67, 0x75, 0x61, 0x67, 0x65, 0x3a, 0x20, 0x65, 0x6e, 0x0d, 0x0a, 0x55, 0x73, 0x65, 0x72, 0x2d, 0x41, 0x67, 0x65, 0x6e, 0x74, 0x3a, 0x20, 0x4c, 0x79, 0x6e, 0x78, 0x2f, 0x32, 0x2e, 0x38, 0x2e, 0x36, 0x72, 0x65, 0x6c, 0x2e, 0x34, 0x20, 0x6c, 0x69, 0x62, 0x77, 0x77, 0x77, 0x2d, 0x46, 0x4d, 0x2f, 0x32, 0x2e, 0x31, 0x34, 0x20, 0x53, 0x53, 0x4c, 0x2d, 0x4d, 0x4d, 0x2f, 0x31, 0x2e, 0x34, 0x2e, 0x31, 0x20, 0x47, 0x4e, 0x55, 0x54, 0x4c, 0x53, 0x2f, 0x32, 0x2e, 0x30, 0x2e, 0x34, 0x0d, 0x0a, 0x0d, 0x0a }; uint8_t pkt5[] = { 0x00, 0x13, 0x20, 0x65, 0x1a, 0x9e, 0x00, 0x1a, 0x2b, 0x19, 0x52, 0xa8, 0x08, 0x00, 0x45, 0x00, 0x00, 0x34, 0xa8, 0xbd, 0x40, 0x00, 0x40, 0x06, 0x0d, 0xd9, 0xc0, 0xa8, 0x01, 0x01, 0xc0, 0xa8, 0x01, 0xdc, 0x00, 0x50, 0xe7, 0xf5, 0x21, 0x04, 0x8b, 0xde, 0x17, 0x51, 0x83, 0x94, 0x80, 0x10, 0x00, 0x2d, 0x5b, 0xc3, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x01, 0x29, 0x23, 0x63, 0x01, 0x72, 0x40, 0x93 }; uint8_t pkt6[] = { 0x00, 0x13, 0x20, 0x65, 0x1a, 0x9e, 0x00, 0x1a, 0x2b, 0x19, 0x52, 0xa8, 0x08, 0x00, 0x45, 0x00, 0x01, 0xe4, 0xa8, 0xbe, 0x40, 0x00, 0x40, 0x06, 0x0c, 0x28, 0xc0, 0xa8, 0x01, 0x01, 0xc0, 0xa8, 0x01, 0xdc, 0x00, 0x50, 0xe7, 0xf5, 0x21, 0x04, 0x8b, 0xde, 0x17, 0x51, 0x83, 0x94, 0x80, 0x18, 0x00, 0x2d, 0x1b, 0x84, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x01, 0x29, 0x23, 0x6a, 0x01, 0x72, 0x40, 0x93, 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x31, 0x20, 0x34, 0x30, 0x31, 0x20, 0x55, 0x6e, 0x61, 0x75, 0x74, 0x68, 0x6f, 0x72, 0x69, 0x7a, 0x65, 0x64, 0x0d, 0x0a, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x3a, 0x20, 0x6d, 0x69, 0x63, 0x72, 0x6f, 0x5f, 0x68, 0x74, 0x74, 0x70, 0x64, 0x0d, 0x0a, 0x43, 0x61, 0x63, 0x68, 0x65, 0x2d, 0x43, 0x6f, 0x6e, 0x74, 0x72, 0x6f, 0x6c, 0x3a, 0x20, 0x6e, 0x6f, 0x2d, 0x63, 0x61, 0x63, 0x68, 0x65, 0x0d, 0x0a, 0x44, 0x61, 0x74, 0x65, 0x3a, 0x20, 0x57, 0x65, 0x64, 0x2c, 0x20, 0x31, 0x34, 0x20, 0x4f, 0x63, 0x74, 0x20, 0x32, 0x30, 0x30, 0x39, 0x20, 0x31, 0x33, 0x3a, 0x34, 0x39, 0x3a, 0x35, 0x33, 0x20, 0x47, 0x4d, 0x54, 0x0d, 0x0a, 0x57, 0x57, 0x57, 0x2d, 0x41, 0x75, 0x74, 0x68, 0x65, 0x6e, 0x74, 0x69, 0x63, 0x61, 0x74, 0x65, 0x3a, 0x20, 0x42, 0x61, 0x73, 0x69, 0x63, 0x20, 0x72, 0x65, 0x61, 0x6c, 0x6d, 0x3d, 0x22, 0x44, 0x53, 0x4c, 0x20, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x22, 0x0d, 0x0a, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x54, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x68, 0x74, 0x6d, 0x6c, 0x0d, 0x0a, 0x43, 0x6f, 0x6e, 0x6e, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x3a, 0x20, 0x63, 0x6c, 0x6f, 0x73, 0x65, 0x0d, 0x0a, 0x0d, 0x0a, 0x3c, 0x48, 0x54, 0x4d, 0x4c, 0x3e, 0x3c, 0x48, 0x45, 0x41, 0x44, 0x3e, 0x3c, 0x54, 0x49, 0x54, 0x4c, 0x45, 0x3e, 0x34, 0x30, 0x31, 0x20, 0x55, 0x6e, 0x61, 0x75, 0x74, 0x68, 0x6f, 0x72, 0x69, 0x7a, 0x65, 0x64, 0x3c, 0x2f, 0x54, 0x49, 0x54, 0x4c, 0x45, 0x3e, 0x3c, 0x2f, 0x48, 0x45, 0x41, 0x44, 0x3e, 0x0a, 0x3c, 0x42, 0x4f, 0x44, 0x59, 0x20, 0x42, 0x47, 0x43, 0x4f, 0x4c, 0x4f, 0x52, 0x3d, 0x22, 0x23, 0x63, 0x63, 0x39, 0x39, 0x39, 0x39, 0x22, 0x3e, 0x3c, 0x48, 0x34, 0x3e, 0x34, 0x30, 0x31, 0x20, 0x55, 0x6e, 0x61, 0x75, 0x74, 0x68, 0x6f, 0x72, 0x69, 0x7a, 0x65, 0x64, 0x3c, 0x2f, 0x48, 0x34, 0x3e, 0x0a, 0x41, 0x75, 0x74, 0x68, 0x6f, 0x72, 0x69, 0x7a, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x72, 0x65, 0x71, 0x75, 0x69, 0x72, 0x65, 0x64, 0x2e, 0x0a, 0x3c, 0x48, 0x52, 0x3e, 0x0a, 0x3c, 0x41, 0x44, 0x44, 0x52, 0x45, 0x53, 0x53, 0x3e, 0x3c, 0x41, 0x20, 0x48, 0x52, 0x45, 0x46, 0x3d, 0x22, 0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f, 0x77, 0x77, 0x77, 0x2e, 0x61, 0x63, 0x6d, 0x65, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x73, 0x6f, 0x66, 0x74, 0x77, 0x61, 0x72, 0x65, 0x2f, 0x6d, 0x69, 0x63, 0x72, 0x6f, 0x5f, 0x68, 0x74, 0x74, 0x70, 0x64, 0x2f, 0x22, 0x3e, 0x6d, 0x69, 0x63, 0x72, 0x6f, 0x5f, 0x68, 0x74, 0x74, 0x70, 0x64, 0x3c, 0x2f, 0x41, 0x3e, 0x3c, 0x2f, 0x41, 0x44, 0x44, 0x52, 0x45, 0x53, 0x53, 0x3e, 0x0a, 0x3c, 0x2f, 0x42, 0x4f, 0x44, 0x59, 0x3e, 0x3c, 0x2f, 0x48, 0x54, 0x4d, 0x4c, 0x3e, 0x0a }; uint8_t pkt7[] = { 0x00, 0x1a, 0x2b, 0x19, 0x52, 0xa8, 0x00, 0x13, 0x20, 0x65, 0x1a, 0x9e, 0x08, 0x00, 0x45, 0x00, 0x00, 0x34, 0xc2, 0x29, 0x40, 0x00, 0x40, 0x06, 0xf4, 0x6c, 0xc0, 0xa8, 0x01, 0xdc, 0xc0, 0xa8, 0x01, 0x01, 0xe7, 0xf5, 0x00, 0x50, 0x17, 0x51, 0x83, 0x94, 0x21, 0x04, 0x8d, 0x8e, 0x80, 0x10, 0x00, 0x36, 0x59, 0xfa, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x01, 0x72, 0x40, 0x9c, 0x01, 0x29, 0x23, 0x6a }; uint8_t pkt8[] = { 0x00, 0x13, 0x20, 0x65, 0x1a, 0x9e, 0x00, 0x1a, 0x2b, 0x19, 0x52, 0xa8, 0x08, 0x00, 0x45, 0x00, 0x00, 0x34, 0xa8, 0xbf, 0x40, 0x00, 0x40, 0x06, 0x0d, 0xd7, 0xc0, 0xa8, 0x01, 0x01, 0xc0, 0xa8, 0x01, 0xdc, 0x00, 0x50, 0xe7, 0xf5, 0x21, 0x04, 0x8d, 0x8e, 0x17, 0x51, 0x83, 0x94, 0x80, 0x11, 0x00, 0x2d, 0x5a, 0x0b, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x01, 0x29, 0x23, 0x6a, 0x01, 0x72, 0x40, 0x93 }; uint8_t pkt9[] = { 0x00, 0x1a, 0x2b, 0x19, 0x52, 0xa8, 0x00, 0x13, 0x20, 0x65, 0x1a, 0x9e, 0x08, 0x00, 0x45, 0x00, 0x00, 0x34, 0xc2, 0x2a, 0x40, 0x00, 0x40, 0x06, 0xf4, 0x6b, 0xc0, 0xa8, 0x01, 0xdc, 0xc0, 0xa8, 0x01, 0x01, 0xe7, 0xf5, 0x00, 0x50, 0x17, 0x51, 0x83, 0x94, 0x21, 0x04, 0x8d, 0x8f, 0x80, 0x10, 0x00, 0x36, 0x59, 0xef, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x01, 0x72, 0x40, 0xa6, 0x01, 0x29, 0x23, 0x6a }; uint8_t pkt10[] = { 0x00, 0x1a, 0x2b, 0x19, 0x52, 0xa8, 0x00, 0x13, 0x20, 0x65, 0x1a, 0x9e, 0x08, 0x00, 0x45, 0x00, 0x00, 0x34, 0xc2, 0x2b, 0x40, 0x00, 0x40, 0x06, 0xf4, 0x6a, 0xc0, 0xa8, 0x01, 0xdc, 0xc0, 0xa8, 0x01, 0x01, 0xe7, 0xf5, 0x00, 0x50, 0x17, 0x51, 0x83, 0x94, 0x21, 0x04, 0x8d, 0x8f, 0x80, 0x11, 0x00, 0x36, 0x57, 0x0a, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x01, 0x72, 0x43, 0x8a, 0x01, 0x29, 0x23, 0x6a }; uint8_t pkt11[] = { 0x00, 0x13, 0x20, 0x65, 0x1a, 0x9e, 0x00, 0x1a, 0x2b, 0x19, 0x52, 0xa8, 0x08, 0x00, 0x45, 0x00, 0x00, 0x34, 0x10, 0xaf, 0x40, 0x00, 0x40, 0x06, 0xa5, 0xe7, 0xc0, 0xa8, 0x01, 0x01, 0xc0, 0xa8, 0x01, 0xdc, 0x00, 0x50, 0xe7, 0xf5, 0x21, 0x04, 0x8d, 0x8f, 0x17, 0x51, 0x83, 0x95, 0x80, 0x10, 0x00, 0x2d, 0x54, 0xbb, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x01, 0x29, 0x25, 0xc2, 0x01, 0x72, 0x43, 0x8a }; uint8_t *pkts[] = { pkt1, pkt2, pkt3, pkt4, pkt5, pkt6, pkt7, pkt8, pkt9, pkt10, pkt11 }; uint16_t pktssizes[] = { sizeof (pkt1), sizeof (pkt2), sizeof (pkt3), sizeof (pkt4), sizeof (pkt5), sizeof (pkt6), sizeof (pkt7), sizeof (pkt8), sizeof (pkt9), sizeof (pkt10), sizeof (pkt11) }; Packet p; DecodeThreadVars dtv; ThreadVars th_v; DetectEngineThreadCtx *det_ctx = NULL; memset (&dtv, 0, sizeof (DecodeThreadVars)); memset (&th_v, 0, sizeof (th_v)); FlowInitConfig (FLOW_QUIET); DetectEngineCtx *de_ctx = DetectEngineCtxInit(); if (de_ctx == NULL) { goto end; } de_ctx->flags |= DE_QUIET; /* Now that we have the array of packets for the flow, prepare the signatures */ de_ctx->sig_list = SigInit (de_ctx, "alert tcp any any -> any any (msg:\"Setting a flowint counter\"; content:\"GET\"; flowint: myvar,=,1; flowint: maxvar,=,6;sid:101;)"); de_ctx->sig_list->next = SigInit (de_ctx, "alert tcp any any -> any any (msg:\"Adding to flowint counter\"; content:\"Unauthorized\"; flowint: myvar,+,2; sid:102;)"); de_ctx->sig_list->next->next = SigInit (de_ctx, "alert tcp any any -> any any (msg:\"if the flowint counter is 3 create a new counter\"; content:\"Unauthorized\"; flowint: myvar,==,3; flowint: cntpackets, =, 0; sid:103;)"); de_ctx->sig_list->next->next->next = SigInit (de_ctx, "alert tcp any any -> any any (msg:\"and count the rest of the packets received without generating alerts!!!\"; flowint: myvar,==,3; flowint: cntpackets, +, 1; noalert;sid:104;)"); /* comparation of myvar with maxvar */ de_ctx->sig_list->next->next->next->next = SigInit (de_ctx, "alert tcp any any -> any any (msg:\" and fire this when it reach 6\"; flowint: cntpackets, ==, maxvar; sid:105;)"); /* I know it's a bit ugly, */ de_ctx->sig_list->next->next->next->next->next = NULL; SigGroupBuild (de_ctx); //PatternMatchPrepare (mpm_ctx, MPM_B2G); DetectEngineThreadCtxInit (&th_v, (void *) de_ctx, (void *) &det_ctx); /* Get the idx of the vars we are going to track */ uint16_t idx1, idx2; idx1 = VariableNameGetIdx (det_ctx->de_ctx, "myvar", DETECT_FLOWINT); idx2 = VariableNameGetIdx (det_ctx->de_ctx, "cntpackets", DETECT_FLOWINT); int i; /* Decode the packets, and test the matches*/ for (i = 0;i < 11;i++) { memset (&p, 0, sizeof (Packet)); DecodeEthernet (&th_v, &dtv, &p, pkts[i], pktssizes[i], NULL); SigMatchSignatures (&th_v, de_ctx, det_ctx, &p); switch (i) { case 3: if (PacketAlertCheck (&p, 101) == 0) { SCLogDebug ("Not declared/initialized!"); result = 0; } break; case 5: if (PacketAlertCheck (&p, 102) == 0) { SCLogDebug ("Not incremented!"); result = 0; } if (PacketAlertCheck (&p, 103) == 0) { SCLogDebug ("myvar is not 3 or bad cmp!!"); result = 0; } break; case 10: if (PacketAlertCheck (&p, 105) == 0) { SCLogDebug ("Not declared/initialized/or well incremented the" " second var!"); result = 0; } break; } SCLogDebug ("Raw Packet %d has %u alerts ", i, p.alerts.cnt); } SigGroupCleanup (de_ctx); SigCleanSignatures (de_ctx); DetectEngineThreadCtxDeinit (&th_v, (void *) det_ctx); //PatternMatchDestroy (mpm_ctx); DetectEngineCtxFree (de_ctx); FlowShutdown(); return result; end: if (de_ctx) { SigGroupCleanup (de_ctx); SigCleanSignatures (de_ctx); } if (det_ctx) DetectEngineThreadCtxDeinit (&th_v, (void *) det_ctx); //PatternMatchDestroy (mpm_ctx); if (de_ctx) DetectEngineCtxFree (de_ctx); FlowShutdown(); return result; } #endif /* UNITTESTS */ /** * \brief this function registers unit tests for DetectFlowint */ void DetectFlowintRegisterTests (void) { #ifdef UNITTESTS /* UNITTESTS */ UtRegisterTest ("DetectFlowintTestParseVal01", DetectFlowintTestParseVal01, 1); UtRegisterTest ("DetectFlowintTestParseVar01", DetectFlowintTestParseVar01, 1); UtRegisterTest ("DetectFlowintTestParseVal02", DetectFlowintTestParseVal02, 1); UtRegisterTest ("DetectFlowintTestParseVar02", DetectFlowintTestParseVar02, 1); UtRegisterTest ("DetectFlowintTestParseVal03", DetectFlowintTestParseVal03, 1); UtRegisterTest ("DetectFlowintTestParseVar03", DetectFlowintTestParseVar03, 1); UtRegisterTest ("DetectFlowintTestParseVal04", DetectFlowintTestParseVal04, 1); UtRegisterTest ("DetectFlowintTestParseVar04", DetectFlowintTestParseVar04, 1); UtRegisterTest ("DetectFlowintTestParseVal05", DetectFlowintTestParseVal05, 1); UtRegisterTest ("DetectFlowintTestParseVar05", DetectFlowintTestParseVar05, 1); UtRegisterTest ("DetectFlowintTestParseVal06", DetectFlowintTestParseVal06, 1); UtRegisterTest ("DetectFlowintTestParseVar06", DetectFlowintTestParseVar06, 1); UtRegisterTest ("DetectFlowintTestParseVal07", DetectFlowintTestParseVal07, 1); UtRegisterTest ("DetectFlowintTestParseVar07", DetectFlowintTestParseVar07, 1); UtRegisterTest ("DetectFlowintTestParseVal08", DetectFlowintTestParseVal08, 1); UtRegisterTest ("DetectFlowintTestParseVar08", DetectFlowintTestParseVar08, 1); UtRegisterTest ("DetectFlowintTestParseVal09", DetectFlowintTestParseVal09, 1); UtRegisterTest ("DetectFlowintTestParseVar09", DetectFlowintTestParseVar09, 1); UtRegisterTest ("DetectFlowintTestParseIsset10", DetectFlowintTestParseIsset10, 1); UtRegisterTest ("DetectFlowintTestParseInvalidSyntaxis01", DetectFlowintTestParseInvalidSyntaxis01, 1); UtRegisterTest ("DetectFlowintTestPacket01Real", DetectFlowintTestPacket01Real, 1); #endif /* UNITTESTS */ }