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/* Copyright (C) 2007-2021 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.
*/
#include "../suricata-common.h"
#include "../stream-tcp-private.h"
#include "../stream-tcp.h"
#include "../stream-tcp-reassemble.h"
#include "../stream-tcp-inline.h"
#include "../stream-tcp-list.h"
#include "../stream-tcp-util.h"
#include "../util-streaming-buffer.h"
#include "../util-print.h"
#include "../util-unittest.h"
struct TestReassembleRawCallbackData {
const uint8_t *expect_data;
const uint32_t expect_data_len;
};
static int TestReassembleRawCallback(
void *cb_data, const uint8_t *data, const uint32_t data_len, const uint64_t offset)
{
struct TestReassembleRawCallbackData *cb = cb_data;
SCLogNotice("have %u expect %u", data_len, cb->expect_data_len);
if (data_len == cb->expect_data_len &&
memcmp(data, cb->expect_data, data_len) == 0) {
return 1;
} else {
SCLogNotice("data mismatch. Expected:");
PrintRawDataFp(stdout, cb->expect_data, cb->expect_data_len);
SCLogNotice("Got:");
PrintRawDataFp(stdout, data, data_len);
return -1;
}
}
static int TestReassembleRawValidate(TcpSession *ssn, Packet *p,
const uint8_t *data, const uint32_t data_len)
{
struct TestReassembleRawCallbackData cb = { data, data_len };
uint64_t progress = 0;
int r = StreamReassembleRaw(ssn, p, TestReassembleRawCallback, &cb, &progress, false);
if (r == 1) {
StreamReassembleRawUpdateProgress(ssn, p, progress);
}
SCLogNotice("r %d", r);
return r;
}
#define RAWREASSEMBLY_START(isn) \
TcpReassemblyThreadCtx *ra_ctx = NULL; \
TcpSession ssn; \
ThreadVars tv; \
memset(&tv, 0, sizeof(tv)); \
Packet *p = NULL; \
\
\
StreamTcpUTInit(&ra_ctx); \
StreamTcpUTInitInline(); \
stream_config.reassembly_toserver_chunk_size = 9; \
stream_config.reassembly_toclient_chunk_size = 9; \
StreamTcpUTSetupSession(&ssn); \
StreamTcpUTSetupStream(&ssn.server, (isn)); \
StreamTcpUTSetupStream(&ssn.client, (isn)); \
ssn.server.last_ack = (isn) + 1; \
ssn.client.last_ack = (isn) + 1; \
\
TcpStream *stream = &ssn.client;
#define RAWREASSEMBLY_END \
StreamTcpUTClearSession(&ssn); \
StreamTcpUTDeinit(ra_ctx); \
PASS
#define RAWREASSEMBLY_STEP(seq, seg, seglen, buf, buflen) \
p = PacketGetFromAlloc(); \
FAIL_IF_NULL(p); \
{ \
SCLogNotice("SEQ %u block of %u", (seq), (seglen)); \
p->flowflags = FLOW_PKT_TOSERVER; \
TCPHdr tcphdr; \
memset(&tcphdr, 0, sizeof(tcphdr)); \
p->tcph = &tcphdr; \
p->tcph->th_seq = htonl((seq)); \
p->tcph->th_ack = htonl(10); \
p->payload_len = (seglen); \
\
FAIL_IF(StreamTcpUTAddPayload(&tv, ra_ctx, &ssn, stream, (seq), (uint8_t *)(seg), (seglen)) != 0); \
p->flags |= PKT_STREAM_ADD; \
FAIL_IF(!(TestReassembleRawValidate(&ssn, p, (uint8_t *)(buf), (buflen)))); \
}\
PacketFree(p);
#define RAWREASSEMBLY_STEP_WITH_PROGRESS(seq, seg, seglen, buf, buflen, lastack, progress) \
stream->last_ack = (lastack); \
RAWREASSEMBLY_STEP((seq),(seg),(seglen),(buf),(buflen)); \
FAIL_IF(STREAM_RAW_PROGRESS(stream) != (progress));
static int StreamTcpReassembleRawTest01 (void)
{
RAWREASSEMBLY_START(1);
RAWREASSEMBLY_STEP(2, "AAA", 3, "AAA", 3);
RAWREASSEMBLY_STEP(5, "BBB", 3, "AAABBB", 6);
RAWREASSEMBLY_STEP(8, "CCC", 3, "AAABBBCCC", 9);
RAWREASSEMBLY_END;
}
static int StreamTcpReassembleRawTest02 (void)
{
RAWREASSEMBLY_START(1);
RAWREASSEMBLY_STEP(2, "AAA", 3, "AAA", 3);
RAWREASSEMBLY_STEP(5, "BBB", 3, "AAABBB", 6);
RAWREASSEMBLY_STEP(11,"DDD", 3, "DDD", 3);
RAWREASSEMBLY_STEP(8, "CCC", 3, "BBBCCCDDD", 9);
RAWREASSEMBLY_END;
}
static int StreamTcpReassembleRawTest03 (void)
{
RAWREASSEMBLY_START(1);
RAWREASSEMBLY_STEP(2, "AAA", 3, "AAA", 3);
RAWREASSEMBLY_STEP(11,"DDD", 3, "DDD", 3);
RAWREASSEMBLY_STEP(8, "CCC", 3, "CCCDDD", 6);
RAWREASSEMBLY_END;
}
static int StreamTcpReassembleRawTest04 (void)
{
RAWREASSEMBLY_START(1);
RAWREASSEMBLY_STEP(2, "AAAAA", 5, "AAAAA", 5);
RAWREASSEMBLY_STEP(10,"CCCCC", 5, "CCCCC", 5);
RAWREASSEMBLY_STEP(7, "BBB", 3, "AAABBBCCC", 9);
RAWREASSEMBLY_END;
}
static int StreamTcpReassembleRawTest05 (void)
{
RAWREASSEMBLY_START(1);
RAWREASSEMBLY_STEP(2, "AAAAA", 5, "AAAAA", 5);
RAWREASSEMBLY_STEP(10,"CCCCC", 5, "CCCCC", 5);
RAWREASSEMBLY_STEP(2, "EEEEEEEEEEEEE", 13, "AAAAAEEECCCCC", 13);
RAWREASSEMBLY_END;
}
static int StreamTcpReassembleRawTest06 (void)
{
RAWREASSEMBLY_START(1);
RAWREASSEMBLY_STEP(2, "AAAAA", 5, "AAAAA", 5);
RAWREASSEMBLY_STEP(16,"CCCCC", 5, "CCCCC", 5);
RAWREASSEMBLY_STEP(7, "BBBBBBBBB", 9, "ABBBBBBBBBC", 11);
RAWREASSEMBLY_STEP(21,"DDDDDDDDDD",10,"CCCDDDDDDDDDD", 13);
RAWREASSEMBLY_END;
}
static int StreamTcpReassembleRawTest07 (void)
{
RAWREASSEMBLY_START(1);
RAWREASSEMBLY_STEP(2, "AAAAAAA", 7, "AAAAAAA", 7);
RAWREASSEMBLY_STEP(9, "BBBBBBB", 7, "AAABBBBBBB", 10);
RAWREASSEMBLY_STEP(16,"C", 1, "ABBBBBBBC", 9);
RAWREASSEMBLY_STEP(17,"DDDDDDDD",8,"BBCDDDDDDDD", 11);
RAWREASSEMBLY_END;
}
static int StreamTcpReassembleRawTest08 (void)
{
RAWREASSEMBLY_START(1);
RAWREASSEMBLY_STEP_WITH_PROGRESS(2, "AAA", 3, "AAA", 3, 3, 3);
RAWREASSEMBLY_STEP_WITH_PROGRESS(8, "CCC", 3, "CCC", 3, 3, 3);
// segment lost, last_ack updated
RAWREASSEMBLY_STEP_WITH_PROGRESS(11, "DDD", 3, "CCCDDD", 6, 8, 12);
RAWREASSEMBLY_END;
}
static void StreamTcpReassembleRawRegisterTests(void)
{
UtRegisterTest("StreamTcpReassembleRawTest01",
StreamTcpReassembleRawTest01);
UtRegisterTest("StreamTcpReassembleRawTest02",
StreamTcpReassembleRawTest02);
UtRegisterTest("StreamTcpReassembleRawTest03",
StreamTcpReassembleRawTest03);
UtRegisterTest("StreamTcpReassembleRawTest04",
StreamTcpReassembleRawTest04);
UtRegisterTest("StreamTcpReassembleRawTest05",
StreamTcpReassembleRawTest05);
UtRegisterTest("StreamTcpReassembleRawTest06",
StreamTcpReassembleRawTest06);
UtRegisterTest("StreamTcpReassembleRawTest07",
StreamTcpReassembleRawTest07);
UtRegisterTest("StreamTcpReassembleRawTest08",
StreamTcpReassembleRawTest08);
}
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