-/* Copyright (C) 2007-2022 Open Information Security Foundation
+/* Copyright (C) 2007-2023 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
typedef struct DetectAppLayerEventData_ {
AppProto alproto;
uint8_t event_id;
-
- /* it's used to check if there are event set into the detect engine */
- bool needs_detctx;
-
- char *arg;
} DetectAppLayerEventData;
static int DetectAppLayerEventPktMatch(DetectEngineThreadCtx *det_ctx,
Packet *p, const Signature *s, const SigMatchCtx *ctx);
-static int DetectAppLayerEventSetupP1(DetectEngineCtx *, Signature *, const char *);
-#ifdef UNITTESTS
-static void DetectAppLayerEventRegisterTests(void);
-#endif
+static int DetectAppLayerEventSetup(DetectEngineCtx *, Signature *, const char *);
static void DetectAppLayerEventFree(DetectEngineCtx *, void *);
static uint8_t DetectEngineAptEventInspect(DetectEngineCtx *de_ctx, DetectEngineThreadCtx *det_ctx,
const struct DetectEngineAppInspectionEngine_ *engine, const Signature *s, Flow *f,
sigmatch_table[DETECT_AL_APP_LAYER_EVENT].url = "/rules/app-layer.html#app-layer-event";
sigmatch_table[DETECT_AL_APP_LAYER_EVENT].Match =
DetectAppLayerEventPktMatch;
- sigmatch_table[DETECT_AL_APP_LAYER_EVENT].Setup = DetectAppLayerEventSetupP1;
+ sigmatch_table[DETECT_AL_APP_LAYER_EVENT].Setup = DetectAppLayerEventSetup;
sigmatch_table[DETECT_AL_APP_LAYER_EVENT].Free = DetectAppLayerEventFree;
-#ifdef UNITTESTS
- sigmatch_table[DETECT_AL_APP_LAYER_EVENT].RegisterTests =
- DetectAppLayerEventRegisterTests;
-#endif
DetectAppLayerInspectEngineRegister2("app-layer-events", ALPROTO_UNKNOWN, SIG_FLAG_TOSERVER, 0,
DetectEngineAptEventInspect, NULL);
const AppProto alproto = f->alproto;
AppLayerDecoderEvents *decoder_events =
AppLayerParserGetEventsByTx(f->proto, alproto, tx);
- if (decoder_events == NULL)
+ if (decoder_events == NULL) {
goto end;
-
+ }
SigMatchData *smd = engine->smd;
while (1) {
DetectAppLayerEventData *aled = (DetectAppLayerEventData *)smd->ctx;
return false;
}
-/** \retval int 0 ok
- * \retval int -1 error
- * \retval int -3 non-fatal error: sig will be rejected w/o raising error
- */
-static int DetectAppLayerEventParseAppP2(DetectAppLayerEventData *data,
- uint8_t *ipproto_bitarray,
- AppLayerEventType *event_type)
-{
- int event_id = 0;
- uint8_t ipproto;
- char alproto_name[MAX_ALPROTO_NAME];
- int r = 0;
-
- if (OutdatedEvent(data->arg)) {
- if (SigMatchStrictEnabled(DETECT_AL_APP_LAYER_EVENT)) {
- SCLogError("app-layer-event keyword no longer supports event \"%s\"", data->arg);
- return -1;
- } else {
- SCLogWarning("app-layer-event keyword no longer supports event \"%s\"", data->arg);
- return -3;
- }
- }
-
- const char *p_idx = strchr(data->arg, '.');
- if (strlen(data->arg) > MAX_ALPROTO_NAME) {
- SCLogError("app-layer-event keyword is too long or malformed");
- return -1;
- }
- strlcpy(alproto_name, data->arg, p_idx - data->arg + 1);
-
- if (ipproto_bitarray[IPPROTO_TCP / 8] & 1 << (IPPROTO_TCP % 8)) {
- ipproto = IPPROTO_TCP;
- } else if (ipproto_bitarray[IPPROTO_UDP / 8] & 1 << (IPPROTO_UDP % 8)) {
- ipproto = IPPROTO_UDP;
- } else {
- SCLogError("protocol %s is disabled", alproto_name);
- return -1;
- }
-
- if (!data->needs_detctx) {
- r = AppLayerParserGetEventInfo(ipproto, data->alproto,
- p_idx + 1, &event_id, event_type);
- } else {
- r = DetectEngineGetEventInfo(p_idx + 1, &event_id, event_type);
- }
- if (r < 0) {
- if (SigMatchStrictEnabled(DETECT_AL_APP_LAYER_EVENT)) {
- SCLogError("app-layer-event keyword's "
- "protocol \"%s\" doesn't have event \"%s\" registered",
- alproto_name, p_idx + 1);
- return -1;
- } else {
- SCLogWarning("app-layer-event keyword's "
- "protocol \"%s\" doesn't have event \"%s\" registered",
- alproto_name, p_idx + 1);
- return -3;
- }
- }
- if (event_id > UINT8_MAX) {
- SCLogWarning("app-layer-event keyword's id has invalid value");
- return -4;
- }
- data->event_id = (uint8_t)event_id;
-
- return 0;
-}
-
static AppProto AppLayerEventGetProtoByName(char *alproto_name)
{
AppProto alproto = AppLayerGetProtoByName(alproto_name);
return alproto;
}
-static DetectAppLayerEventData *DetectAppLayerEventParseAppP1(const char *arg)
+static int DetectAppLayerEventSetup(DetectEngineCtx *de_ctx, Signature *s, const char *arg)
{
- /* period index */
- char alproto_name[MAX_ALPROTO_NAME];
- bool needs_detctx = false;
-
- const char *p_idx = strchr(arg, '.');
- if (strlen(arg) > MAX_ALPROTO_NAME) {
- SCLogError("app-layer-event keyword is too long or malformed");
- return NULL;
- }
- /* + 1 for trailing \0 */
- strlcpy(alproto_name, arg, p_idx - arg + 1);
-
- const AppProto alproto = AppLayerEventGetProtoByName(alproto_name);
- if (alproto == ALPROTO_UNKNOWN) {
- if (!strcmp(alproto_name, "file")) {
- needs_detctx = true;
- } else {
- SCLogError("app-layer-event keyword "
- "supplied with unknown protocol \"%s\"",
- alproto_name);
- return NULL;
- }
- }
-
- DetectAppLayerEventData *aled = SCCalloc(1, sizeof(*aled));
- if (unlikely(aled == NULL))
- return NULL;
- aled->alproto = alproto;
- aled->arg = SCStrdup(arg);
- if (aled->arg == NULL) {
- SCFree(aled);
- return NULL;
- }
- aled->needs_detctx = needs_detctx;
-
- return aled;
-}
-
-static DetectAppLayerEventData *DetectAppLayerEventParse(const char *arg,
- AppLayerEventType *event_type)
-{
- *event_type = 0;
-
if (arg == NULL) {
SCLogError("app-layer-event keyword supplied "
"with no arguments. This keyword needs an argument.");
- return NULL;
+ return -1;
}
while (*arg != '\0' && isspace((unsigned char)*arg))
arg++;
+ AppLayerEventType event_type;
+ DetectAppLayerEventData *data = NULL;
+
if (strchr(arg, '.') == NULL) {
- return DetectAppLayerEventParsePkt(arg, event_type);
+ data = DetectAppLayerEventParsePkt(arg, &event_type);
+ if (data == NULL)
+ return -1;
} else {
- return DetectAppLayerEventParseAppP1(arg);
- }
-}
+ SCLogDebug("parsing %s", arg);
+ char alproto_name[MAX_ALPROTO_NAME];
+ bool needs_detctx = false;
-static int DetectAppLayerEventSetupP2(DetectEngineCtx *de_ctx,
- Signature *s,
- SigMatch *sm)
-{
- AppLayerEventType event_type = 0;
+ const char *p_idx = strchr(arg, '.');
+ if (strlen(arg) > MAX_ALPROTO_NAME) {
+ SCLogError("app-layer-event keyword is too long or malformed");
+ return -1;
+ }
+ const char *event_name = p_idx + 1; // skip .
+ /* + 1 for trailing \0 */
+ strlcpy(alproto_name, arg, p_idx - arg + 1);
+
+ const AppProto alproto = AppLayerEventGetProtoByName(alproto_name);
+ if (alproto == ALPROTO_UNKNOWN) {
+ if (!strcmp(alproto_name, "file")) {
+ needs_detctx = true;
+ } else {
+ SCLogError("app-layer-event keyword "
+ "supplied with unknown protocol \"%s\"",
+ alproto_name);
+ return -1;
+ }
+ }
+ if (OutdatedEvent(arg)) {
+ if (SigMatchStrictEnabled(DETECT_AL_APP_LAYER_EVENT)) {
+ SCLogError("app-layer-event keyword no longer supports event \"%s\"", arg);
+ return -1;
+ } else {
+ SCLogWarning("app-layer-event keyword no longer supports event \"%s\"", arg);
+ return -3;
+ }
+ }
- int ret = DetectAppLayerEventParseAppP2((DetectAppLayerEventData *)sm->ctx,
- s->proto.proto, &event_type);
- if (ret < 0) {
- /* DetectAppLayerEventParseAppP2 prints errors */
+ uint8_t ipproto = 0;
+ if (s->proto.proto[IPPROTO_TCP / 8] & 1 << (IPPROTO_TCP % 8)) {
+ ipproto = IPPROTO_TCP;
+ } else if (s->proto.proto[IPPROTO_UDP / 8] & 1 << (IPPROTO_UDP % 8)) {
+ ipproto = IPPROTO_UDP;
+ } else {
+ SCLogError("protocol %s is disabled", alproto_name);
+ return -1;
+ }
- /* sm has been removed from lists by DetectAppLayerEventPrepare */
- SigMatchFree(de_ctx, sm);
- return ret;
+ int r;
+ int event_id = 0;
+ if (!needs_detctx) {
+ r = AppLayerParserGetEventInfo(ipproto, alproto, event_name, &event_id, &event_type);
+ } else {
+ r = DetectEngineGetEventInfo(event_name, &event_id, &event_type);
+ }
+ if (r < 0) {
+ if (SigMatchStrictEnabled(DETECT_AL_APP_LAYER_EVENT)) {
+ SCLogError("app-layer-event keyword's "
+ "protocol \"%s\" doesn't have event \"%s\" registered",
+ alproto_name, event_name);
+ return -1;
+ } else {
+ SCLogWarning("app-layer-event keyword's "
+ "protocol \"%s\" doesn't have event \"%s\" registered",
+ alproto_name, event_name);
+ return -3;
+ }
+ }
+ if (event_id > UINT8_MAX) {
+ SCLogWarning("app-layer-event keyword's id has invalid value");
+ return -4;
+ }
+ data = SCCalloc(1, sizeof(*data));
+ if (unlikely(data == NULL))
+ return -1;
+ data->alproto = alproto;
+ data->event_id = (uint8_t)event_id;
}
- SigMatchAppendSMToList(s, sm, g_applayer_events_list_id);
- /* We should have set this flag already in SetupP1 */
- s->flags |= SIG_FLAG_APPLAYER;
-
- return 0;
-}
-
-static int DetectAppLayerEventSetupP1(DetectEngineCtx *de_ctx, Signature *s, const char *arg)
-{
- AppLayerEventType event_type;
-
- DetectAppLayerEventData *data = DetectAppLayerEventParse(arg, &event_type);
- if (data == NULL)
- SCReturnInt(-1);
+ SCLogDebug("data->event_id %u", data->event_id);
SigMatch *sm = SigMatchAlloc();
if (sm == NULL)
goto error;
SigMatchAppendSMToList(s, sm, g_applayer_events_list_id);
+ s->flags |= SIG_FLAG_APPLAYER;
}
return 0;
static void DetectAppLayerEventFree(DetectEngineCtx *de_ctx, void *ptr)
{
- DetectAppLayerEventData *data = (DetectAppLayerEventData *)ptr;
- if (data->arg != NULL)
- SCFree(data->arg);
-
SCFree(ptr);
-
- return;
-}
-
-int DetectAppLayerEventPrepare(DetectEngineCtx *de_ctx, Signature *s)
-{
- SigMatch *sm = s->init_data->smlists[g_applayer_events_list_id];
- SigMatch *smn;
- s->init_data->smlists[g_applayer_events_list_id] = NULL;
- s->init_data->smlists_tail[g_applayer_events_list_id] = NULL;
-
- while (sm != NULL) {
- // save it for later use in loop
- smn = sm->next;
- /* these will be overwritten in SigMatchAppendSMToList
- * called by DetectAppLayerEventSetupP2
- */
- sm->next = sm->prev = NULL;
- int ret = DetectAppLayerEventSetupP2(de_ctx, s, sm);
- if (ret < 0) {
- // current one was freed, let's free the next ones
- sm = smn;
- while(sm) {
- smn = sm->next;
- SigMatchFree(de_ctx, sm);
- sm = smn;
- }
- return ret;
- }
- sm = smn;
- }
-
- return 0;
-}
-
-/**********************************Unittests***********************************/
-
-#ifdef UNITTESTS /* UNITTESTS */
-#include "stream-tcp-private.h"
-#include "stream-tcp-reassemble.h"
-#include "stream-tcp.h"
-#include "detect-engine-alert.h"
-
-#define APP_LAYER_EVENT_TEST_MAP_EVENT1 0
-#define APP_LAYER_EVENT_TEST_MAP_EVENT2 1
-#define APP_LAYER_EVENT_TEST_MAP_EVENT3 2
-#define APP_LAYER_EVENT_TEST_MAP_EVENT4 3
-#define APP_LAYER_EVENT_TEST_MAP_EVENT5 4
-#define APP_LAYER_EVENT_TEST_MAP_EVENT6 5
-
-SCEnumCharMap app_layer_event_test_map[ ] = {
- { "event1", APP_LAYER_EVENT_TEST_MAP_EVENT1 },
- { "event2", APP_LAYER_EVENT_TEST_MAP_EVENT2 },
- { "event3", APP_LAYER_EVENT_TEST_MAP_EVENT3 },
- { "event4", APP_LAYER_EVENT_TEST_MAP_EVENT4 },
- { "event5", APP_LAYER_EVENT_TEST_MAP_EVENT5 },
- { "event6", APP_LAYER_EVENT_TEST_MAP_EVENT6 },
-};
-
-static int DetectAppLayerEventTestGetEventInfo(const char *event_name,
- int *event_id,
- AppLayerEventType *event_type)
-{
- *event_id = SCMapEnumNameToValue(event_name, app_layer_event_test_map);
- if (*event_id == -1) {
- SCLogError("event \"%s\" not present in "
- "app-layer-event's test enum map table.",
- event_name);
- /* this should be treated as fatal */
- return -1;
- }
-
- *event_type = APP_LAYER_EVENT_TYPE_TRANSACTION;
-
- return 0;
-}
-
-
-static int DetectAppLayerEventTest01(void)
-{
- AppLayerParserBackupParserTable();
- AppLayerParserRegisterGetEventInfo(IPPROTO_TCP, ALPROTO_SMTP,
- DetectAppLayerEventTestGetEventInfo);
-
- AppLayerEventType event_type;
- int result = 0;
- uint8_t ipproto_bitarray[256 / 8];
- memset(ipproto_bitarray, 0, sizeof(ipproto_bitarray));
- ipproto_bitarray[IPPROTO_TCP / 8] |= 1 << (IPPROTO_TCP % 8);
-
- DetectAppLayerEventData *aled = DetectAppLayerEventParse("smtp.event1",
- &event_type);
- if (aled == NULL)
- goto end;
- if (DetectAppLayerEventParseAppP2(aled, ipproto_bitarray, &event_type) < 0) {
- printf("failure 1\n");
- goto end;
- }
- if (aled->alproto != ALPROTO_SMTP ||
- aled->event_id != APP_LAYER_EVENT_TEST_MAP_EVENT1) {
- printf("test failure. Holding wrong state\n");
- goto end;
- }
-
- result = 1;
-
- end:
- AppLayerParserRestoreParserTable();
- if (aled != NULL)
- DetectAppLayerEventFree(NULL, aled);
- return result;
-}
-
-static int DetectAppLayerEventTest02(void)
-{
- AppLayerParserBackupParserTable();
-
- AppLayerParserRegisterGetEventInfo(IPPROTO_TCP, ALPROTO_SMTP,
- DetectAppLayerEventTestGetEventInfo);
- AppLayerParserRegisterGetEventInfo(
- IPPROTO_TCP, ALPROTO_HTTP1, DetectAppLayerEventTestGetEventInfo);
- AppLayerParserRegisterGetEventInfo(IPPROTO_TCP, ALPROTO_SMB,
- DetectAppLayerEventTestGetEventInfo);
- AppLayerParserRegisterGetEventInfo(IPPROTO_TCP, ALPROTO_FTP,
- DetectAppLayerEventTestGetEventInfo);
-
- AppLayerEventType event_type;
- uint8_t ipproto_bitarray[256 / 8];
- memset(ipproto_bitarray, 0, sizeof(ipproto_bitarray));
- ipproto_bitarray[IPPROTO_TCP / 8] |= 1 << (IPPROTO_TCP % 8);
-
- DetectAppLayerEventData *aled = DetectAppLayerEventParse("smtp.event1",
- &event_type);
- FAIL_IF_NULL(aled);
- FAIL_IF(DetectAppLayerEventParseAppP2(aled, ipproto_bitarray, &event_type) < 0);
- FAIL_IF(aled->alproto != ALPROTO_SMTP);
- FAIL_IF(aled->event_id != APP_LAYER_EVENT_TEST_MAP_EVENT1);
-
- aled = DetectAppLayerEventParse("smtp.event4",
- &event_type);
- FAIL_IF_NULL(aled);
- FAIL_IF(DetectAppLayerEventParseAppP2(aled, ipproto_bitarray, &event_type) < 0);
- FAIL_IF(aled->alproto != ALPROTO_SMTP);
- FAIL_IF(aled->event_id != APP_LAYER_EVENT_TEST_MAP_EVENT4);
-
- aled = DetectAppLayerEventParse("http.event2",
- &event_type);
- FAIL_IF_NULL(aled);
- FAIL_IF(DetectAppLayerEventParseAppP2(aled, ipproto_bitarray, &event_type) < 0);
- FAIL_IF(aled->alproto != ALPROTO_HTTP1);
- FAIL_IF(aled->event_id != APP_LAYER_EVENT_TEST_MAP_EVENT2);
-
- aled = DetectAppLayerEventParse("smb.event3",
- &event_type);
- FAIL_IF_NULL(aled);
- FAIL_IF(DetectAppLayerEventParseAppP2(aled, ipproto_bitarray, &event_type) < 0);
- FAIL_IF(aled->alproto != ALPROTO_SMB);
- FAIL_IF(aled->event_id != APP_LAYER_EVENT_TEST_MAP_EVENT3);
-
- aled = DetectAppLayerEventParse("ftp.event5",
- &event_type);
- FAIL_IF_NULL(aled);
- FAIL_IF(DetectAppLayerEventParseAppP2(aled, ipproto_bitarray, &event_type) < 0);
- FAIL_IF(aled->alproto != ALPROTO_FTP);
- FAIL_IF(aled->event_id != APP_LAYER_EVENT_TEST_MAP_EVENT5);
-
- AppLayerParserRestoreParserTable();
- DetectAppLayerEventFree(NULL, aled);
- PASS;
-}
-
-static int DetectAppLayerEventTest03(void)
-{
- ThreadVars tv;
- TcpReassemblyThreadCtx *ra_ctx = NULL;
- Packet *p = NULL;
- Flow *f = NULL;
- TcpSession ssn;
- TcpStream stream_ts, stream_tc;
- DetectEngineCtx *de_ctx = NULL;
- DetectEngineThreadCtx *det_ctx = NULL;
-
- uint8_t buf_ts[] = "GET /index.html HTTP/1.1\r\n"
- "Host: 127.0.0.1\r\n"
- "User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.3) Gecko/20100402 Firefox/3.6.3\r\n"
- "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n"
- "Accept-Language: en-us,en;q=0.5\r\n"
- "Accept-Encoding: gzip,deflate\r\n"
- "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n"
- "Keep-Alive: 115\r\n"
- "Connection: keep-alive\r\n"
- "\r\n";
- uint8_t buf_tc[] = "HTTP/1.1 200 OK\r\n"
- "Date: Fri, 22 Oct 2010 12:31:08 GMT\r\n"
- "Server: Apache/2.2.15 (Unix) DAV/2\r\n"
- "Last-Modified: Sat, 20 Nov 2004 20:16:24 GMT\r\n"
- "ETag: \"ab8486-2c-3e9564c23b600\"\r\n"
- "Accept-Ranges: bytes\r\n"
- "Content-Length: 44\r\n"
- "Keep-Alive: timeout=5, max=100\r\n"
- "Connection: Keep-Alive\r\n"
- "Content-Type: text/html\r\n"
- "\r\n"
- "<html><body><h1>It works!</h1></body></html>";
-
- memset(&tv, 0, sizeof (ThreadVars));
- memset(&ssn, 0, sizeof(TcpSession));
- memset(&stream_ts, 0, sizeof(TcpStream));
- memset(&stream_tc, 0, sizeof(TcpStream));
-
- ssn.data_first_seen_dir = STREAM_TOSERVER;
-
- de_ctx = DetectEngineCtxInit();
- FAIL_IF(de_ctx == NULL);
- de_ctx->flags |= DE_QUIET;
- de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
- "(app-layer-event: applayer_mismatch_protocol_both_directions; "
- "sid:1;)");
- FAIL_IF(de_ctx->sig_list == NULL);
- SigGroupBuild(de_ctx);
- DetectEngineThreadCtxInit(&tv, (void *)de_ctx, (void *)&det_ctx);
-
- f = UTHBuildFlow(AF_INET, "1.2.3.4", "1.2.3.5", 200, 220);
- FAIL_IF(f == NULL);
- FLOW_INITIALIZE(f);
- f->protoctx = &ssn;
- f->proto = IPPROTO_TCP;
- f->flags |= FLOW_IPV4;
-
- p = PacketGetFromAlloc();
- FAIL_IF(unlikely(p == NULL));
- p->flow = f;
- p->src.family = AF_INET;
- p->dst.family = AF_INET;
- p->proto = IPPROTO_TCP;
-
- StreamTcpUTInit(&ra_ctx);
-
- p->flowflags = FLOW_PKT_TOSERVER;
- TcpStream *stream = &stream_ts;
- FAIL_IF(AppLayerHandleTCPData(&tv, ra_ctx, p, f, &ssn, &stream, buf_ts,
- sizeof(buf_ts), STREAM_TOSERVER | STREAM_START) < 0);
-
- SigMatchSignatures(&tv, de_ctx, det_ctx, p);
-
- FAIL_IF (PacketAlertCheck(p, 1));
-
- p->flowflags = FLOW_PKT_TOCLIENT;
- stream = &stream_tc;
- FAIL_IF (AppLayerHandleTCPData(&tv, ra_ctx, p, f, &ssn, &stream, buf_tc,
- sizeof(buf_tc), STREAM_TOCLIENT | STREAM_START) < 0);
-
- SigMatchSignatures(&tv, de_ctx, det_ctx, p);
-
- FAIL_IF(PacketAlertCheck(p, 1));
-
- StreamTcpUTDeinit(ra_ctx);
- PASS;
-}
-
-static int DetectAppLayerEventTest04(void)
-{
- ThreadVars tv;
- TcpReassemblyThreadCtx *ra_ctx = NULL;
- Packet *p = NULL;
- Flow *f = NULL;
- TcpSession ssn;
- TcpStream stream_ts, stream_tc;
- DetectEngineCtx *de_ctx = NULL;
- DetectEngineThreadCtx *det_ctx = NULL;
-
- uint8_t buf_ts[] = "GET /index.html HTTP/1.1\r\n"
- "Host: 127.0.0.1\r\n"
- "User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.3) Gecko/20100402 Firefox/3.6.3\r\n"
- "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n"
- "Accept-Language: en-us,en;q=0.5\r\n"
- "Accept-Encoding: gzip,deflate\r\n"
- "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n"
- "Keep-Alive: 115\r\n"
- "Connection: keep-alive\r\n"
- "\r\n";
- uint8_t buf_tc[] = "XTTP/1.1 200 OK\r\n"
- "Date: Fri, 22 Oct 2010 12:31:08 GMT\r\n"
- "Server: Apache/2.2.15 (Unix) DAV/2\r\n"
- "Last-Modified: Sat, 20 Nov 2004 20:16:24 GMT\r\n"
- "ETag: \"ab8486-2c-3e9564c23b600\"\r\n"
- "Accept-Ranges: bytes\r\n"
- "Content-Length: 44\r\n"
- "Keep-Alive: timeout=5, max=100\r\n"
- "Connection: Keep-Alive\r\n"
- "Content-Type: text/html\r\n"
- "\r\n"
- "<html><body><h1>It works!</h1></body></html>";
-
- memset(&tv, 0, sizeof (ThreadVars));
- memset(&ssn, 0, sizeof(TcpSession));
- memset(&stream_ts, 0, sizeof(TcpStream));
- memset(&stream_tc, 0, sizeof(TcpStream));
-
- ssn.data_first_seen_dir = STREAM_TOSERVER;
-
- de_ctx = DetectEngineCtxInit();
- FAIL_IF (de_ctx == NULL);
- de_ctx->flags |= DE_QUIET;
- de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
- "(app-layer-event: applayer_detect_protocol_only_one_direction; "
- "sid:1;)");
- FAIL_IF(de_ctx->sig_list == NULL);
- SigGroupBuild(de_ctx);
- DetectEngineThreadCtxInit(&tv, (void *)de_ctx, (void *)&det_ctx);
-
- f = UTHBuildFlow(AF_INET, "1.2.3.4", "1.2.3.5", 200, 220);
- FAIL_IF (f == NULL);
- FLOW_INITIALIZE(f);
- f->protoctx = &ssn;
- f->proto = IPPROTO_TCP;
- f->flags |= FLOW_IPV4;
-
- p = PacketGetFromAlloc();
- FAIL_IF(unlikely(p == NULL));
- p->flow = f;
- p->src.family = AF_INET;
- p->dst.family = AF_INET;
- p->proto = IPPROTO_TCP;
-
- StreamTcpUTInit(&ra_ctx);
-
- p->flowflags = FLOW_PKT_TOSERVER;
- TcpStream *stream = &stream_ts;
- FAIL_IF(AppLayerHandleTCPData(&tv, ra_ctx, p, f, &ssn, &stream, buf_ts,
- sizeof(buf_ts), STREAM_TOSERVER | STREAM_START) < 0);
- SigMatchSignatures(&tv, de_ctx, det_ctx, p);
- FAIL_IF (PacketAlertCheck(p, 1));
-
- p->flowflags = FLOW_PKT_TOCLIENT;
- stream = &stream_tc;
- FAIL_IF (AppLayerHandleTCPData(&tv, ra_ctx, p, f, &ssn, &stream, buf_tc,
- sizeof(buf_tc), STREAM_TOCLIENT | STREAM_START) < 0);
- SigMatchSignatures(&tv, de_ctx, det_ctx, p);
- FAIL_IF (!PacketAlertCheck(p, 1));
-
- StreamTcpUTDeinit(ra_ctx);
- PASS;
-}
-
-static int DetectAppLayerEventTest05(void)
-{
- ThreadVars tv;
- TcpReassemblyThreadCtx *ra_ctx = NULL;
- Packet *p = NULL;
- Flow *f = NULL;
- TcpSession ssn;
- TcpStream stream_ts, stream_tc;
- DetectEngineCtx *de_ctx = NULL;
- DetectEngineThreadCtx *det_ctx = NULL;
-
- uint8_t buf_ts[] = "GET /index.html HTTP/1.1\r\n"
- "Host: 127.0.0.1\r\n"
- "User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.3) Gecko/20100402 Firefox/3.6.3\r\n"
- "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n"
- "Accept-Language: en-us,en;q=0.5\r\n"
- "Accept-Encoding: gzip,deflate\r\n"
- "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n"
- "Keep-Alive: 115\r\n"
- "Connection: keep-alive\r\n"
- "\r\n";
- /* tls */
- uint8_t buf_tc[] = {
- 0x16, 0x03, 0x01, 0x00, 0x86, 0x10, 0x00, 0x00,
- 0x82, 0x00, 0x80, 0xd3, 0x6f, 0x1f, 0x63, 0x82,
- 0x8d, 0x75, 0x77, 0x8c, 0x91, 0xbc, 0xa1, 0x3d,
- 0xbb, 0xe1, 0xb5, 0xd3, 0x31, 0x92, 0x59, 0x2b,
- 0x2c, 0x43, 0x96, 0xa3, 0xaa, 0x23, 0x92, 0xd0,
- 0x91, 0x2a, 0x5e, 0x10, 0x5b, 0xc8, 0xc1, 0xe2,
- 0xd3, 0x5c, 0x8b, 0x8c, 0x91, 0x9e, 0xc2, 0xf2,
- 0x9c, 0x3c, 0x4f, 0x37, 0x1e, 0x20, 0x5e, 0x33,
- 0xd5, 0xf0, 0xd6, 0xaf, 0x89, 0xf5, 0xcc, 0xb2,
- 0xcf, 0xc1, 0x60, 0x3a, 0x46, 0xd5, 0x4e, 0x2a,
- 0xb6, 0x6a, 0xb9, 0xfc, 0x32, 0x8b, 0xe0, 0x6e,
- 0xa0, 0xed, 0x25, 0xa0, 0xa4, 0x82, 0x81, 0x73,
- 0x90, 0xbf, 0xb5, 0xde, 0xeb, 0x51, 0x8d, 0xde,
- 0x5b, 0x6f, 0x94, 0xee, 0xba, 0xe5, 0x69, 0xfa,
- 0x1a, 0x80, 0x30, 0x54, 0xeb, 0x12, 0x01, 0xb9,
- 0xfe, 0xbf, 0x82, 0x95, 0x01, 0x7b, 0xb0, 0x97,
- 0x14, 0xc2, 0x06, 0x3c, 0x69, 0xfb, 0x1c, 0x66,
- 0x47, 0x17, 0xd9, 0x14, 0x03, 0x01, 0x00, 0x01,
- 0x01, 0x16, 0x03, 0x01, 0x00, 0x30, 0xf6, 0xbc,
- 0x0d, 0x6f, 0xe8, 0xbb, 0xaa, 0xbf, 0x14, 0xeb,
- 0x7b, 0xcc, 0x6c, 0x28, 0xb0, 0xfc, 0xa6, 0x01,
- 0x2a, 0x97, 0x96, 0x17, 0x5e, 0xe8, 0xb4, 0x4e,
- 0x78, 0xc9, 0x04, 0x65, 0x53, 0xb6, 0x93, 0x3d,
- 0xeb, 0x44, 0xee, 0x86, 0xf9, 0x80, 0x49, 0x45,
- 0x21, 0x34, 0xd1, 0xee, 0xc8, 0x9c,
- };
-
- memset(&tv, 0, sizeof (ThreadVars));
- memset(&ssn, 0, sizeof(TcpSession));
- memset(&stream_ts, 0, sizeof(TcpStream));
- memset(&stream_tc, 0, sizeof(TcpStream));
-
- ssn.data_first_seen_dir = STREAM_TOSERVER;
-
- de_ctx = DetectEngineCtxInit();
- FAIL_IF (de_ctx == NULL);
- de_ctx->flags |= DE_QUIET;
- de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
- "(app-layer-event: applayer_mismatch_protocol_both_directions; "
- "sid:1;)");
- FAIL_IF (de_ctx->sig_list == NULL);
- SigGroupBuild(de_ctx);
- DetectEngineThreadCtxInit(&tv, (void *)de_ctx, (void *)&det_ctx);
-
- f = UTHBuildFlow(AF_INET, "1.2.3.4", "1.2.3.5", 200, 220);
- FAIL_IF (f == NULL);
- FLOW_INITIALIZE(f);
- f->protoctx = &ssn;
- f->proto = IPPROTO_TCP;
- f->flags |= FLOW_IPV4;
-
- p = PacketGetFromAlloc();
- FAIL_IF (unlikely(p == NULL));
- p->flow = f;
- p->src.family = AF_INET;
- p->dst.family = AF_INET;
- p->proto = IPPROTO_TCP;
-
- StreamTcpUTInit(&ra_ctx);
-
- p->flowflags = FLOW_PKT_TOSERVER;
- TcpStream *stream = &stream_ts;
- FAIL_IF (AppLayerHandleTCPData(&tv, ra_ctx, p, f, &ssn, &stream, buf_ts,
- sizeof(buf_ts), STREAM_TOSERVER | STREAM_START) < 0);
- SigMatchSignatures(&tv, de_ctx, det_ctx, p);
- FAIL_IF (PacketAlertCheck(p, 1));
-
- p->flowflags = FLOW_PKT_TOCLIENT;
- stream = &stream_tc;
- FAIL_IF (AppLayerHandleTCPData(&tv, ra_ctx, p, f, &ssn, &stream, buf_tc,
- sizeof(buf_tc), STREAM_TOCLIENT | STREAM_START) < 0);
- SigMatchSignatures(&tv, de_ctx, det_ctx, p);
- FAIL_IF (!PacketAlertCheck(p, 1));
-
- StreamTcpUTDeinit(ra_ctx);
- PASS;
-}
-
-static int DetectAppLayerEventTest06(void)
-{
- AppLayerEventType event_type;
- uint8_t ipproto_bitarray[256 / 8];
- memset(ipproto_bitarray, 0, sizeof(ipproto_bitarray));
- ipproto_bitarray[IPPROTO_TCP / 8] |= 1 << (IPPROTO_TCP % 8);
-
- DetectAppLayerEventData *aled = DetectAppLayerEventParse("file.test",
- &event_type);
-
- FAIL_IF_NULL(aled);
-
- FAIL_IF(DetectAppLayerEventParseAppP2(aled, ipproto_bitarray, &event_type) < 0);
-
- FAIL_IF(aled->alproto != ALPROTO_UNKNOWN);
- FAIL_IF(aled->event_id != DET_CTX_EVENT_TEST);
-
- DetectAppLayerEventFree(NULL, aled);
- PASS;
-}
-
-/**
- * \brief This function registers unit tests for "app-layer-event" keyword.
- */
-static void DetectAppLayerEventRegisterTests(void)
-{
- UtRegisterTest("DetectAppLayerEventTest01", DetectAppLayerEventTest01);
- UtRegisterTest("DetectAppLayerEventTest02", DetectAppLayerEventTest02);
- UtRegisterTest("DetectAppLayerEventTest03", DetectAppLayerEventTest03);
- UtRegisterTest("DetectAppLayerEventTest04", DetectAppLayerEventTest04);
- UtRegisterTest("DetectAppLayerEventTest05", DetectAppLayerEventTest05);
- UtRegisterTest("DetectAppLayerEventTest06", DetectAppLayerEventTest06);
}
-#endif /* UNITTESTS */
projects / thirdparty / suricata.git / commitdiff
