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-rw-r--r--framework/src/suricata/src/stream-tcp-util.c264
1 files changed, 264 insertions, 0 deletions
diff --git a/framework/src/suricata/src/stream-tcp-util.c b/framework/src/suricata/src/stream-tcp-util.c
new file mode 100644
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+++ b/framework/src/suricata/src/stream-tcp-util.c
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+/* Copyright (C) 2007-2011 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
+ * Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+/**
+ * \file
+ *
+ * \author Victor Julien <victor@inliniac.net>
+ *
+ * Helper functions for the stream engine.
+ */
+
+#include "suricata-common.h"
+
+#include "stream-tcp-reassemble.h"
+#include "stream-tcp-inline.h"
+#include "stream-tcp.h"
+#include "stream-tcp-util.h"
+
+#include "util-memcmp.h"
+#include "util-print.h"
+
+#include "util-unittest.h"
+#include "util-unittest-helper.h"
+
+#ifdef UNITTESTS
+
+/* unittest helper functions */
+
+extern int stream_inline;
+
+void StreamTcpUTInit(TcpReassemblyThreadCtx **ra_ctx)
+{
+ StreamTcpInitConfig(TRUE);
+ *ra_ctx = StreamTcpReassembleInitThreadCtx(NULL);
+}
+
+void StreamTcpUTDeinit(TcpReassemblyThreadCtx *ra_ctx)
+{
+ StreamTcpReassembleFreeThreadCtx(ra_ctx);
+ StreamTcpFreeConfig(TRUE);
+ stream_inline = 0;
+}
+
+void StreamTcpUTInitInline(void) {
+ stream_inline = 1;
+}
+
+void StreamTcpUTSetupSession(TcpSession *ssn)
+{
+ memset(ssn, 0x00, sizeof(TcpSession));
+}
+
+void StreamTcpUTClearSession(TcpSession *ssn)
+{
+ StreamTcpUTClearStream(&ssn->client);
+ StreamTcpUTClearStream(&ssn->server);
+}
+
+void StreamTcpUTSetupStream(TcpStream *s, uint32_t isn)
+{
+ memset(s, 0x00, sizeof(TcpStream));
+
+ s->isn = isn;
+ STREAMTCP_SET_RA_BASE_SEQ(s, isn);
+}
+
+void StreamTcpUTClearStream(TcpStream *s)
+{
+ StreamTcpReturnStreamSegments(s);
+}
+
+int StreamTcpUTAddSegmentWithPayload(ThreadVars *tv, TcpReassemblyThreadCtx *ra_ctx, TcpStream *stream, uint32_t seq, uint8_t *payload, uint16_t len)
+{
+ TcpSegment *s = StreamTcpGetSegment(tv, ra_ctx, len);
+ if (s == NULL) {
+ return -1;
+ }
+
+ s->seq = seq;
+ s->payload_len = len;
+ memcpy(s->payload, payload, len);
+
+ Packet *p = UTHBuildPacketReal(s->payload, s->payload_len, IPPROTO_TCP, "1.1.1.1", "2.2.2.2", 1024, 80);
+ if (p == NULL) {
+ return -1;
+ }
+ p->tcph->th_seq = htonl(seq);
+
+ if (StreamTcpReassembleInsertSegment(tv, ra_ctx, stream, s, p) < 0)
+ return -1;
+
+ UTHFreePacket(p);
+ return 0;
+}
+
+int StreamTcpUTAddSegmentWithByte(ThreadVars *tv, TcpReassemblyThreadCtx *ra_ctx, TcpStream *stream, uint32_t seq, uint8_t byte, uint16_t len)
+{
+ TcpSegment *s = StreamTcpGetSegment(tv, ra_ctx, len);
+ if (s == NULL) {
+ return -1;
+ }
+
+ s->seq = seq;
+ s->payload_len = len;
+ memset(s->payload, byte, len);
+
+ Packet *p = UTHBuildPacketReal(s->payload, s->payload_len, IPPROTO_TCP, "1.1.1.1", "2.2.2.2", 1024, 80);
+ if (p == NULL) {
+ return -1;
+ }
+ p->tcph->th_seq = htonl(seq);
+
+ if (StreamTcpReassembleInsertSegment(tv, ra_ctx, stream, s, p) < 0)
+ return -1;
+ UTHFreePacket(p);
+ return 0;
+}
+
+/* tests */
+
+int StreamTcpUtilTest01(void)
+{
+ int ret = 0;
+ TcpReassemblyThreadCtx *ra_ctx = NULL;
+
+ StreamTcpUTInit(&ra_ctx);
+
+ if (ra_ctx == NULL) {
+ printf("ra_ctx is NULL: ");
+ goto end;
+ }
+
+ ret = 1;
+end:
+ StreamTcpUTDeinit(ra_ctx);
+ return ret;
+}
+
+
+int StreamTcpUtilStreamTest01(void)
+{
+ int ret = 0;
+ TcpReassemblyThreadCtx *ra_ctx = NULL;
+ ThreadVars tv;
+ TcpStream stream;
+
+ memset(&tv, 0x00, sizeof(tv));
+
+ StreamTcpUTInit(&ra_ctx);
+ StreamTcpUTSetupStream(&stream, 1);
+
+ if (StreamTcpUTAddSegmentWithByte(&tv, ra_ctx, &stream, 2, 'A', 5) == -1) {
+ printf("failed to add segment 1: ");
+ goto end;
+ }
+ if (StreamTcpUTAddSegmentWithByte(&tv, ra_ctx, &stream, 7, 'B', 5) == -1) {
+ printf("failed to add segment 2: ");
+ goto end;
+ }
+ if (StreamTcpUTAddSegmentWithByte(&tv, ra_ctx, &stream, 12, 'C', 5) == -1) {
+ printf("failed to add segment 3: ");
+ goto end;
+ }
+
+ TcpSegment *seg = stream.seg_list;
+ if (seg->seq != 2) {
+ printf("first seg in the list should have seq 2: ");
+ goto end;
+ }
+
+ seg = seg->next;
+ if (seg->seq != 7) {
+ printf("first seg in the list should have seq 7: ");
+ goto end;
+ }
+
+ seg = seg->next;
+ if (seg->seq != 12) {
+ printf("first seg in the list should have seq 12: ");
+ goto end;
+ }
+
+ ret = 1;
+end:
+ StreamTcpUTClearStream(&stream);
+ StreamTcpUTDeinit(ra_ctx);
+ return ret;
+}
+
+int StreamTcpUtilStreamTest02(void)
+{
+ int ret = 0;
+ TcpReassemblyThreadCtx *ra_ctx = NULL;
+ ThreadVars tv;
+ TcpStream stream;
+
+ memset(&tv, 0x00, sizeof(tv));
+
+ StreamTcpUTInit(&ra_ctx);
+ StreamTcpUTSetupStream(&stream, 1);
+
+ if (StreamTcpUTAddSegmentWithByte(&tv, ra_ctx, &stream, 7, 'B', 5) == -1) {
+ printf("failed to add segment 2: ");
+ goto end;
+ }
+ if (StreamTcpUTAddSegmentWithByte(&tv, ra_ctx, &stream, 12, 'C', 5) == -1) {
+ printf("failed to add segment 3: ");
+ goto end;
+ }
+ if (StreamTcpUTAddSegmentWithByte(&tv, ra_ctx, &stream, 2, 'A', 5) == -1) {
+ printf("failed to add segment 1: ");
+ goto end;
+ }
+
+ TcpSegment *seg = stream.seg_list;
+ if (seg->seq != 2) {
+ printf("first seg in the list should have seq 2: ");
+ goto end;
+ }
+
+ seg = seg->next;
+ if (seg->seq != 7) {
+ printf("first seg in the list should have seq 7: ");
+ goto end;
+ }
+
+ seg = seg->next;
+ if (seg->seq != 12) {
+ printf("first seg in the list should have seq 12: ");
+ goto end;
+ }
+
+ ret = 1;
+end:
+ StreamTcpUTClearStream(&stream);
+ StreamTcpUTDeinit(ra_ctx);
+ return ret;
+}
+
+#endif
+
+void StreamTcpUtilRegisterTests(void)
+{
+#ifdef UNITTESTS
+ UtRegisterTest("StreamTcpUtilTest01", StreamTcpUtilTest01, 1);
+ UtRegisterTest("StreamTcpUtilStreamTest01", StreamTcpUtilStreamTest01, 1);
+ UtRegisterTest("StreamTcpUtilStreamTest02", StreamTcpUtilStreamTest02, 1);
+#endif /* UNITTESTS */
+}
+