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stellar-stellar/infra/packet_manager/test/gtest_packet_builder.cpp
2024-11-18 15:24:38 +08:00

1232 lines
50 KiB
C++

#include <gtest/gtest.h>
#include <arpa/inet.h>
#include "checksum.h"
#include "packet_helper.h"
#include "packet_internal.h"
#include "packet_dump.h"
#include "packet_parser.h"
#include "packet_builder.h"
#define PRINT_GREEN(fmt, ...) printf("\033[0;32m" fmt "\033[0m\n", ##__VA_ARGS__)
#define PRINT_RED(fmt, ...) printf("\033[0;31m" fmt "\033[0m\n", ##__VA_ARGS__)
// https://dox.ipxe.org/tcp_8h_source.html
#define TCP_OPTION_TS 8
#define TCP_OPTION_NOP 1
struct tcp_timestamp_option
{
uint8_t kind;
uint8_t length;
uint32_t tsval;
uint32_t tsecr;
} __attribute__((packed));
struct tcp_timestamp_padded_option
{
uint8_t nop[2];
struct tcp_timestamp_option tsopt;
} __attribute__((packed));
struct tcp_timestamp_padded_option ts_pad_opt =
{
.nop = {TCP_OPTION_NOP, TCP_OPTION_NOP},
.tsopt = {
.kind = TCP_OPTION_TS,
.length = 10,
.tsval = 0x12345678,
.tsecr = 0x87654321,
},
};
/******************************************************************************
* [Protocols in frame: eth:ethertype:ip:tcp]
******************************************************************************
*
* Frame 1: 60 bytes on wire (480 bits), 60 bytes captured (480 bits)
* Ethernet II, Src: 52:54:00:94:27:9b (52:54:00:94:27:9b), Dst: 52:54:00:19:8f:63 (52:54:00:19:8f:63)
* Destination: 52:54:00:19:8f:63 (52:54:00:19:8f:63)
* Source: 52:54:00:94:27:9b (52:54:00:94:27:9b)
* Type: IPv4 (0x0800)
* Padding: 000000000000
* Internet Protocol Version 4, Src: 192.168.122.202, Dst: 192.168.122.100
* 0100 .... = Version: 4
* .... 0101 = Header Length: 20 bytes (5)
* Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
* 0000 00.. = Differentiated Services Codepoint: Default (0)
* .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
* Total Length: 40
* Identification: 0x0c5e (3166)
* 010. .... = Flags: 0x2, Don't fragment
* 0... .... = Reserved bit: Not set
* .1.. .... = Don't fragment: Set
* ..0. .... = More fragments: Not set
* ...0 0000 0000 0000 = Fragment Offset: 0
* Time to Live: 64
* Protocol: TCP (6)
* Header Checksum: 0xb7f2 [correct]
* [Header checksum status: Good]
* [Calculated Checksum: 0xb7f2]
* Source Address: 192.168.122.202
* Destination Address: 192.168.122.100
* Transmission Control Protocol, Src Port: 1080, Dst Port: 62395, Seq: 1457975085, Ack: 1047768425, Len: 0
* Source Port: 1080
* Destination Port: 62395
* [Stream index: 0]
* [Conversation completeness: Incomplete (4)]
* ..0. .... = RST: Absent
* ...0 .... = FIN: Absent
* .... 0... = Data: Absent
* .... .1.. = ACK: Present
* .... ..0. = SYN-ACK: Absent
* .... ...0 = SYN: Absent
* [Completeness Flags: ···A··]
* [TCP Segment Len: 0]
* Sequence Number: 1457975085
* [Next Sequence Number: 1457975085]
* Acknowledgment Number: 1047768425
* 0101 .... = Header Length: 20 bytes (5)
* Flags: 0x010 (ACK)
* 000. .... .... = Reserved: Not set
* ...0 .... .... = Accurate ECN: Not set
* .... 0... .... = Congestion Window Reduced: Not set
* .... .0.. .... = ECN-Echo: Not set
* .... ..0. .... = Urgent: Not set
* .... ...1 .... = Acknowledgment: Set
* .... .... 0... = Push: Not set
* .... .... .0.. = Reset: Not set
* .... .... ..0. = Syn: Not set
* .... .... ...0 = Fin: Not set
* [TCP Flags: ·······A····]
* Window: 457
* [Calculated window size: 457]
* [Window size scaling factor: -1 (unknown)]
* Checksum: 0x0da7 [correct]
* [Calculated Checksum: 0x0da7]
* [Checksum Status: Good]
* Urgent Pointer: 0
* [Timestamps]
* [Time since first frame in this TCP stream: 0.000000000 seconds]
* [Time since previous frame in this TCP stream: 0.000000000 seconds]
*/
unsigned char data1[] = {
0x52, 0x54, 0x00, 0x19, 0x8f, 0x63, 0x52, 0x54, 0x00, 0x94, 0x27, 0x9b, 0x08, 0x00, 0x45, 0x00, 0x00, 0x28, 0x0c, 0x5e, 0x40, 0x00, 0x40, 0x06, 0xb7, 0xf2,
0xc0, 0xa8, 0x7a, 0xca, 0xc0, 0xa8, 0x7a, 0x64, 0x04, 0x38, 0xf3, 0xbb, 0x56, 0xe6, 0xef, 0x2d, 0x3e, 0x73, 0xad, 0x69, 0x50, 0x10, 0x01, 0xc9, 0x0d, 0xa7,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
/*
* packet_build_tcp()
* -> ETH->IPv4->TCP
* -> with TCP options
* -> with TCP payload
*/
#if 1
TEST(PACKET_BUILD_TCP, ETH_IP4_TCP)
{
struct packet orig_pkt;
memset(&orig_pkt, 0, sizeof(orig_pkt));
packet_parse(&orig_pkt, (const char *)data1, sizeof(data1));
PRINT_GREEN("origin packet:");
packet_print(&orig_pkt);
struct packet *new_pkt = packet_build_tcp(&orig_pkt, 1, 2, TH_ACK, (const char *)&ts_pad_opt, sizeof(ts_pad_opt), "Hello", 5);
EXPECT_TRUE(new_pkt != nullptr);
PRINT_GREEN("new packet:");
packet_print(new_pkt);
packet_dump_hex(new_pkt, STDOUT_FILENO);
packet_dump_pcap(new_pkt, "craft-eth-ipv4-tcp.pcap");
const char *orig_pkt_data = packet_get_raw_data(&orig_pkt);
uint16_t orig_pkt_len = packet_get_raw_len(&orig_pkt);
const char *new_pkt_data = packet_get_raw_data(new_pkt);
uint16_t new_pkt_len = packet_get_raw_len(new_pkt);
EXPECT_TRUE(orig_pkt_len - 6 == // trim Eth padding: 000000000000
new_pkt_len - 12 - 5); // trim TCP options, TCP payload
int count = packet_get_layer_count(new_pkt);
for (int i = 0; i < count; i++)
{
const struct layer *layer = packet_get_layer_by_idx(new_pkt, i);
if (layer->proto == LAYER_PROTO_IPV4)
{
const struct ip *ip = (const struct ip *)layer->hdr.raw;
EXPECT_TRUE(ip4_hdr_get_total_len(ip) == 57);
EXPECT_TRUE(ip4_hdr_get_checksum(ip) == 0xb7e1);
break;
}
if (layer->proto == LAYER_PROTO_TCP)
{
const struct tcphdr *tcp = (const struct tcphdr *)layer->hdr.raw;
EXPECT_TRUE(tcp_hdr_get_seq(tcp) == 1);
EXPECT_TRUE(tcp_hdr_get_ack(tcp) == 2);
EXPECT_TRUE(tcp_hdr_get_flags(tcp) == TH_ACK);
EXPECT_TRUE(tcp_hdr_get_hdr_len(tcp) == 32);
EXPECT_TRUE(tcp_hdr_get_checksum(tcp) == 0xaf73);
break;
}
}
for (uint16_t i = 0; i < new_pkt_len - 12 - 5; i++)
{
if ((16 <= i && i <= 17) || // skip IPv4 total length
(24 <= i && i <= 25)) // skip IPv4 checksum
{
continue;
}
if ((38 <= i && i <= 41) || // skip TCP seq
(42 <= i && i <= 45) || // skip TCP ack
i == 46 || // skip TCP data offset
i == 47 || // skip TCP flags
(50 <= i && i <= 51)) // skip TCP checksum
{
continue;
}
// printf(("idx: %d, orig: %02x, new: %02x\n"), i, orig_pkt_data[i], new_pkt_data[i]);
EXPECT_TRUE(orig_pkt_data[i] == new_pkt_data[i]);
}
packet_free(new_pkt);
}
#endif
/******************************************************************************
* [Protocols in frame: eth:ethertype:ip:ipv6:tcp]
******************************************************************************
*
* Frame 1: 106 bytes on wire (848 bits), 106 bytes captured (848 bits)
* Ethernet II, Src: JuniperN_45:88:29 (2c:6b:f5:45:88:29), Dst: JuniperN_2a:a2:00 (5c:5e:ab:2a:a2:00)
* Destination: JuniperN_2a:a2:00 (5c:5e:ab:2a:a2:00)
* Source: JuniperN_45:88:29 (2c:6b:f5:45:88:29)
* Type: IPv4 (0x0800)
* Internet Protocol Version 4, Src: 210.77.88.163, Dst: 59.66.4.50
* 0100 .... = Version: 4
* .... 0101 = Header Length: 20 bytes (5)
* Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
* Total Length: 92
* Identification: 0x0b4d (2893)
* 000. .... = Flags: 0x0
* ...0 0000 0000 0000 = Fragment Offset: 0
* Time to Live: 59
* Protocol: IPv6 (41)
* Header Checksum: 0x09c8 [validation disabled]
* [Header checksum status: Unverified]
* Source Address: 210.77.88.163
* Destination Address: 59.66.4.50
* Internet Protocol Version 6, Src: 2001:da8:200:900e:200:5efe:d24d:58a3, Dst: 2600:140e:6::1702:1058
* 0110 .... = Version: 6
* .... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)
* .... 0000 0000 0000 0000 0000 = Flow Label: 0x00000
* Payload Length: 32
* Next Header: TCP (6)
* Hop Limit: 64
* Source Address: 2001:da8:200:900e:200:5efe:d24d:58a3
* Destination Address: 2600:140e:6::1702:1058
* [Source ISATAP IPv4: 210.77.88.163]
* Transmission Control Protocol, Src Port: 52556, Dst Port: 80, Seq: 0, Len: 0
* Source Port: 52556
* Destination Port: 80
* [Stream index: 0]
* [Conversation completeness: Complete, WITH_DATA (31)]
* [TCP Segment Len: 0]
* Sequence Number: 0 (relative sequence number)
* Sequence Number (raw): 2172673142
* [Next Sequence Number: 1 (relative sequence number)]
* Acknowledgment Number: 0
* Acknowledgment number (raw): 0
* 1000 .... = Header Length: 32 bytes (8)
* Flags: 0x002 (SYN)
* Window: 8192
* [Calculated window size: 8192]
* Checksum: 0xf757 [unverified]
* [Checksum Status: Unverified]
* Urgent Pointer: 0
* Options: (12 bytes), Maximum segment size, No-Operation (NOP), Window scale, No-Operation (NOP), No-Operation (NOP), SACK permitted
* [Timestamps]
*/
unsigned char data2[] = {
0x5c, 0x5e, 0xab, 0x2a, 0xa2, 0x00, 0x2c, 0x6b, 0xf5, 0x45, 0x88, 0x29, 0x08, 0x00, 0x45, 0x00, 0x00, 0x5c, 0x0b, 0x4d, 0x00, 0x00, 0x3b, 0x29, 0x09, 0xc8,
0xd2, 0x4d, 0x58, 0xa3, 0x3b, 0x42, 0x04, 0x32, 0x60, 0x00, 0x00, 0x00, 0x00, 0x20, 0x06, 0x40, 0x20, 0x01, 0x0d, 0xa8, 0x02, 0x00, 0x90, 0x0e, 0x02, 0x00,
0x5e, 0xfe, 0xd2, 0x4d, 0x58, 0xa3, 0x26, 0x00, 0x14, 0x0e, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x17, 0x02, 0x10, 0x58, 0xcd, 0x4c, 0x00, 0x50,
0x81, 0x80, 0x5c, 0x76, 0x00, 0x00, 0x00, 0x00, 0x80, 0x02, 0x20, 0x00, 0xf7, 0x57, 0x00, 0x00, 0x02, 0x04, 0x04, 0xc4, 0x01, 0x03, 0x03, 0x08, 0x01, 0x01,
0x04, 0x02};
/*
* packet_build_tcp()
* -> ETH->IPv4->IPv6->TCP
* -> with TCP payload
*/
#if 1
TEST(PACKET_BUILD_TCP, ETH_IP4_IP6_TCP)
{
struct packet orig_pkt;
memset(&orig_pkt, 0, sizeof(orig_pkt));
packet_parse(&orig_pkt, (const char *)data2, sizeof(data2));
PRINT_GREEN("origin packet:");
packet_print(&orig_pkt);
struct packet *new_pkt = packet_build_tcp(&orig_pkt, 1234, 2345, TH_ACK, NULL, 0, "Hello", 5);
EXPECT_TRUE(new_pkt != nullptr);
PRINT_GREEN("new packet:");
packet_print(new_pkt);
packet_dump_hex(new_pkt, STDOUT_FILENO);
packet_dump_pcap(new_pkt, "craft-eth-ipv4-ipv6-tcp.pcap");
const char *orig_pkt_data = packet_get_raw_data(&orig_pkt);
uint16_t orig_pkt_len = packet_get_raw_len(&orig_pkt);
const char *new_pkt_data = packet_get_raw_data(new_pkt);
uint16_t new_pkt_len = packet_get_raw_len(new_pkt);
EXPECT_TRUE(orig_pkt_len - 12 == // trim TCP options
new_pkt_len - 5); // trim TCP payload
int count = packet_get_layer_count(new_pkt);
for (int i = 0; i < count; i++)
{
const struct layer *layer = packet_get_layer_by_idx(new_pkt, i);
if (layer->proto == LAYER_PROTO_IPV4)
{
const struct ip *ip = (const struct ip *)layer->hdr.raw;
EXPECT_TRUE(ip4_hdr_get_total_len(ip) == 85);
EXPECT_TRUE(ip4_hdr_get_checksum(ip) == 0x09cf);
break;
}
if (layer->proto == LAYER_PROTO_IPV6)
{
const struct ip6_hdr *ip6 = (const struct ip6_hdr *)layer->hdr.raw;
EXPECT_TRUE(ip6_hdr_get_payload_len(ip6) == 25);
break;
}
if (layer->proto == LAYER_PROTO_TCP)
{
const struct tcphdr *tcp = (const struct tcphdr *)layer->hdr.raw;
EXPECT_TRUE(tcp_hdr_get_seq(tcp) == 1234);
EXPECT_TRUE(tcp_hdr_get_ack(tcp) == 2345);
EXPECT_TRUE(tcp_hdr_get_flags(tcp) == TH_ACK);
EXPECT_TRUE(tcp_hdr_get_hdr_len(tcp) == 20);
EXPECT_TRUE(tcp_hdr_get_checksum(tcp) == 0xe350);
break;
}
}
for (uint16_t i = 0; i < new_pkt_len - 5; i++)
{
if ((16 <= i && i <= 17) || // skip IPv4 total length
(24 <= i && i <= 25)) // skip IPv4 checksum
{
continue;
}
if (38 <= i && i <= 39) // skip IPv6 payload length
{
continue;
}
if ((78 <= i && i <= 81) || // skip TCP seq
(82 <= i && i <= 85) || // skip TCP ack
i == 86 || // skip TCP data offset
i == 87 || // skip TCP flags
(90 <= i && i <= 91)) // skip TCP checksum
{
continue;
}
// printf(("idx: %d, orig: %02x, new: %02x\n"), i, orig_pkt_data[i], new_pkt_data[i]);
EXPECT_TRUE(orig_pkt_data[i] == new_pkt_data[i]);
}
packet_free(new_pkt);
}
#endif
/******************************************************************************
* [Protocols in frame: eth:ethertype:ipv6:udp:gtp:ip:tcp:ja3:tls]
******************************************************************************
*
* Frame 1: 1470 bytes on wire (11760 bits), 1470 bytes captured (11760 bits)
* Ethernet II, Src: HuaweiTe_62:ee:70 (60:d7:55:62:ee:70), Dst: zte_0e:f5:1c (74:4a:a4:0e:f5:1c)
* Destination: zte_0e:f5:1c (74:4a:a4:0e:f5:1c)
* Source: HuaweiTe_62:ee:70 (60:d7:55:62:ee:70)
* Type: IPv6 (0x86dd)
* Internet Protocol Version 6, Src: 2409:8034:4025::50:a31, Dst: 2409:8034:4040:5301::204
* 0110 .... = Version: 6
* .... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)
* .... 0000 0000 0000 0000 0000 = Flow Label: 0x00000
* Payload Length: 1416
* Next Header: UDP (17)
* Hop Limit: 252
* Source Address: 2409:8034:4025::50:a31
* Destination Address: 2409:8034:4040:5301::204
* User Datagram Protocol, Src Port: 2152, Dst Port: 2152
* Source Port: 2152
* Destination Port: 2152
* Length: 1416
* Checksum: 0xc8df [unverified]
* [Checksum Status: Unverified]
* [Stream index: 0]
* [Timestamps]
* UDP payload (1408 bytes)
* GPRS Tunneling Protocol
* Flags: 0x30
* Message Type: T-PDU (0xff)
* Length: 1400
* TEID: 0x6c2a4753 (1814710099)
* Internet Protocol Version 4, Src: 10.49.115.138, Dst: 121.196.250.66
* 0100 .... = Version: 4
* .... 0101 = Header Length: 20 bytes (5)
* Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
* Total Length: 1400
* Identification: 0x0003 (3)
* 010. .... = Flags: 0x2, Don't fragment
* ...0 0000 0000 0000 = Fragment Offset: 0
* Time to Live: 64
* Protocol: TCP (6)
* Header Checksum: 0x43bb [validation disabled]
* [Header checksum status: Unverified]
* Source Address: 10.49.115.138
* Destination Address: 121.196.250.66
* Transmission Control Protocol, Src Port: 50081, Dst Port: 443, Seq: 1, Ack: 1, Len: 1348
* Source Port: 50081
* Destination Port: 443
* [Stream index: 0]
* [Conversation completeness: Incomplete (8)]
* [TCP Segment Len: 1348]
* Sequence Number: 1 (relative sequence number)
* Sequence Number (raw): 1522577104
* [Next Sequence Number: 1349 (relative sequence number)]
* Acknowledgment Number: 1 (relative ack number)
* Acknowledgment number (raw): 3419365570
* 1000 .... = Header Length: 32 bytes (8)
* Flags: 0x010 (ACK)
* Window: 2038
* [Calculated window size: 2038]
* [Window size scaling factor: -1 (unknown)]
* Checksum: 0xd3c2 [unverified]
* [Checksum Status: Unverified]
* Urgent Pointer: 0
* Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
* [Timestamps]
* [SEQ/ACK analysis]
* TCP payload (1348 bytes)
* Transport Layer Security
*/
unsigned char data3[] = {
0x74, 0x4a, 0xa4, 0x0e, 0xf5, 0x1c, 0x60, 0xd7, 0x55, 0x62, 0xee, 0x70, 0x86, 0xdd, 0x60, 0x00, 0x00, 0x00, 0x05, 0x88, 0x11, 0xfc, 0x24, 0x09, 0x80, 0x34,
0x40, 0x25, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0x0a, 0x31, 0x24, 0x09, 0x80, 0x34, 0x40, 0x40, 0x53, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x04, 0x08, 0x68, 0x08, 0x68, 0x05, 0x88, 0xc8, 0xdf, 0x30, 0xff, 0x05, 0x78, 0x6c, 0x2a, 0x47, 0x53, 0x45, 0x00, 0x05, 0x78, 0x00, 0x03, 0x40, 0x00,
0x40, 0x06, 0x43, 0xbb, 0x0a, 0x31, 0x73, 0x8a, 0x79, 0xc4, 0xfa, 0x42, 0xc3, 0xa1, 0x01, 0xbb, 0x5a, 0xc0, 0xae, 0xd0, 0xcb, 0xcf, 0x60, 0xc2, 0x80, 0x10,
0x07, 0xf6, 0xd3, 0xc2, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x85, 0x14, 0x0e, 0xb0, 0xcc, 0x45, 0xf8, 0x5f, 0xef, 0x49, 0x45, 0xa0, 0xbe, 0x21, 0xd6, 0x46,
0x9f, 0xb5, 0x17, 0xb2, 0xfe, 0x61, 0x2d, 0xed, 0x4f, 0x0c, 0x1e, 0xb5, 0xda, 0x91, 0x40, 0x87, 0xab, 0x02, 0x0d, 0x01, 0xc8, 0xf1, 0x24, 0x05, 0x8a, 0x9d,
0x8d, 0xfc, 0xbb, 0x82, 0x24, 0xf5, 0x7d, 0x2d, 0x10, 0x66, 0x30, 0x2a, 0xaa, 0x4a, 0x51, 0x8d, 0xe9, 0x9a, 0x65, 0xcf, 0x89, 0x0c, 0x9e, 0x0d, 0x82, 0xda,
0x5e, 0xd3, 0x98, 0xe3, 0x23, 0xf7, 0x5a, 0xd4, 0x88, 0x94, 0xd2, 0xdf, 0xbe, 0x44, 0x20, 0x2b, 0x21, 0x2d, 0x38, 0xca, 0x29, 0x5e, 0xa3, 0xb7, 0xbb, 0x34,
0x20, 0x42, 0x02, 0x71, 0x04, 0xda, 0xd2, 0xeb, 0xb8, 0x81, 0xa3, 0x48, 0xc8, 0x54, 0xad, 0x42, 0x35, 0xc4, 0x4f, 0x6b, 0x15, 0x50, 0x22, 0x3e, 0x26, 0xb3,
0xfc, 0x30, 0x49, 0x71, 0x6f, 0x41, 0x66, 0xa2, 0x2e, 0xe9, 0xd3, 0x1a, 0x69, 0xa8, 0x87, 0x71, 0x65, 0xa2, 0xc7, 0xc7, 0x2b, 0x25, 0x1d, 0x3f, 0xfb, 0xe6,
0x05, 0xe1, 0x09, 0xb9, 0x76, 0x1d, 0xb9, 0xf9, 0xaf, 0xb4, 0x79, 0xa1, 0x35, 0x05, 0x59, 0x88, 0xa0, 0x07, 0xb5, 0x2d, 0x02, 0x11, 0x0a, 0x89, 0xf1, 0x67,
0xdb, 0xe5, 0x5c, 0x5c, 0xaa, 0x0e, 0x21, 0xa6, 0xa4, 0x1a, 0x9f, 0x9e, 0xc8, 0x2a, 0x36, 0x6f, 0xcc, 0xa3, 0x13, 0x78, 0xf1, 0xbe, 0x34, 0xa0, 0x35, 0xef,
0x1f, 0xf4, 0x79, 0xcb, 0x37, 0x3e, 0x77, 0x14, 0xfb, 0x2e, 0x21, 0x4f, 0x6b, 0xe5, 0xe9, 0x3a, 0x90, 0x76, 0xa8, 0x55, 0x09, 0xb6, 0x68, 0xbf, 0x66, 0xae,
0xf1, 0x55, 0xc0, 0x76, 0x8f, 0x16, 0x86, 0x49, 0x9a, 0x88, 0x01, 0xdb, 0x78, 0x1f, 0xde, 0xc2, 0x33, 0x92, 0xe3, 0x22, 0xc6, 0x8c, 0x20, 0x17, 0xa0, 0xb2,
0x79, 0xf4, 0x60, 0x8e, 0x98, 0x53, 0xcd, 0x8f, 0xb2, 0x8f, 0x80, 0xda, 0x9f, 0xf6, 0x00, 0x0c, 0xf8, 0x6b, 0xdf, 0x7d, 0x93, 0x48, 0x5a, 0x23, 0x35, 0x0e,
0x1b, 0xf7, 0x50, 0x87, 0x93, 0x29, 0xaa, 0xa1, 0xb8, 0x98, 0x9f, 0x89, 0xb2, 0x0a, 0x02, 0x27, 0x95, 0x01, 0x84, 0x5a, 0x09, 0xb8, 0xff, 0x23, 0x02, 0x89,
0xef, 0x1b, 0x64, 0xb2, 0x38, 0x81, 0xc4, 0x36, 0xe3, 0xda, 0xb5, 0x3b, 0x80, 0x45, 0x52, 0x96, 0xab, 0x0e, 0xdb, 0xb6, 0x9c, 0xcb, 0xc4, 0xe5, 0xb9, 0x72,
0x67, 0x57, 0x4b, 0xb9, 0x55, 0xcb, 0x6b, 0xc4, 0xec, 0x46, 0x4d, 0xa3, 0xe0, 0xda, 0xba, 0x70, 0x3d, 0xa6, 0xa7, 0x3f, 0x58, 0xd2, 0x9f, 0xb0, 0x11, 0x66,
0xaf, 0x73, 0x09, 0x60, 0x6e, 0xe0, 0x71, 0xa5, 0x65, 0x41, 0x28, 0x3e, 0x70, 0x1d, 0x25, 0x77, 0x6a, 0x4e, 0xed, 0xb9, 0x27, 0x6c, 0xf0, 0xba, 0x54, 0x8d,
0x77, 0xfb, 0xb6, 0x4e, 0xe2, 0xab, 0x8f, 0xe3, 0xd4, 0x02, 0x65, 0x0a, 0x49, 0xf3, 0xf9, 0xc7, 0x09, 0x76, 0x81, 0xf4, 0xf8, 0x3e, 0x1f, 0x74, 0x30, 0xaf,
0x3b, 0x9e, 0x97, 0x00, 0xde, 0xd8, 0x9a, 0xaf, 0xcc, 0x72, 0xeb, 0x0a, 0xe7, 0xab, 0xc1, 0x53, 0x62, 0x3f, 0x08, 0xba, 0x43, 0x06, 0x13, 0x0a, 0x3b, 0x5c,
0xb4, 0xe0, 0xc8, 0xa6, 0x41, 0x45, 0xaa, 0x1a, 0xc9, 0x88, 0x86, 0x31, 0x25, 0x02, 0x4a, 0x76, 0x66, 0xb6, 0x6d, 0xff, 0x50, 0x1d, 0x3c, 0xf3, 0x2d, 0xfe,
0x7b, 0xb2, 0x75, 0x5d, 0x9a, 0x9a, 0xe5, 0x39, 0x31, 0x4f, 0x7b, 0xa5, 0x6f, 0x94, 0xed, 0x31, 0xd4, 0x61, 0xc7, 0x44, 0x1d, 0x37, 0x19, 0x76, 0x04, 0x0e,
0xbd, 0xc4, 0x9e, 0xe3, 0xdf, 0x94, 0x49, 0x32, 0x65, 0xd0, 0x37, 0x64, 0xb5, 0x2a, 0x61, 0x2d, 0x05, 0xc5, 0xe5, 0x79, 0x3e, 0xcf, 0x5f, 0x77, 0x0a, 0x7c,
0x29, 0x34, 0x1a, 0x45, 0x7e, 0x11, 0x68, 0xb4, 0x3a, 0xf6, 0x5b, 0x23, 0xe4, 0x32, 0xa4, 0x11, 0x1a, 0xba, 0xd6, 0x4a, 0x45, 0x42, 0x29, 0xac, 0xb0, 0x17,
0x05, 0x1b, 0xee, 0xf6, 0x52, 0x6d, 0x8b, 0xb4, 0x3b, 0x63, 0xe2, 0xca, 0xbf, 0x7e, 0xd3, 0xf7, 0x96, 0x75, 0x67, 0x9d, 0x27, 0x15, 0x39, 0xde, 0x5f, 0x66,
0x74, 0x7c, 0x46, 0x01, 0x48, 0xf7, 0x99, 0x33, 0x7d, 0xc6, 0x81, 0xc4, 0x82, 0x09, 0x00, 0x20, 0x3f, 0x5c, 0xe4, 0x51, 0x88, 0x5b, 0xac, 0x31, 0x17, 0x04,
0xa4, 0xac, 0xbf, 0x3d, 0xff, 0xad, 0x51, 0x07, 0x0b, 0xc7, 0x26, 0xa7, 0x9f, 0x83, 0x17, 0xd8, 0x2f, 0x6a, 0x47, 0x96, 0x14, 0x47, 0x68, 0xd4, 0xc0, 0xc0,
0x3b, 0x87, 0x51, 0x30, 0xe9, 0xfa, 0x21, 0x46, 0x80, 0x1a, 0x5a, 0xef, 0x78, 0xd0, 0x3a, 0xac, 0x73, 0x1e, 0x39, 0xba, 0x82, 0x43, 0x5d, 0xef, 0x15, 0x2c,
0x9a, 0xe5, 0xeb, 0x6a, 0xe7, 0x24, 0x12, 0xe6, 0x2a, 0xd2, 0x09, 0xc2, 0x85, 0x69, 0x9d, 0x73, 0x16, 0xb0, 0xad, 0x51, 0xf8, 0x3d, 0x94, 0x6b, 0xb7, 0xb3,
0x7f, 0xb4, 0x9e, 0xc1, 0xdc, 0x31, 0x27, 0xa1, 0x2d, 0xfe, 0x30, 0x15, 0x04, 0x20, 0x82, 0xdc, 0xbd, 0x8b, 0xc5, 0xb4, 0xcf, 0x91, 0x85, 0xae, 0x21, 0x5e,
0x00, 0x10, 0x04, 0x62, 0x8a, 0xe2, 0x66, 0x74, 0xf8, 0x8d, 0x8b, 0x52, 0x17, 0xd9, 0x1a, 0xbd, 0x06, 0x2d, 0x07, 0x6a, 0xf5, 0x8b, 0xdf, 0x85, 0x2e, 0x36,
0xec, 0x15, 0x6f, 0x7e, 0xd2, 0x04, 0x43, 0x6a, 0xd7, 0x60, 0xf5, 0x53, 0x0d, 0x2e, 0x2d, 0xf5, 0x52, 0x4c, 0xcc, 0xe5, 0xf4, 0x47, 0xdd, 0x34, 0xda, 0xc1,
0xfc, 0x60, 0x00, 0xaa, 0x68, 0x01, 0x5c, 0x82, 0x4b, 0xf9, 0x57, 0x54, 0x9d, 0xd5, 0x8b, 0xb6, 0x42, 0x77, 0xd4, 0x47, 0x70, 0x23, 0x4c, 0xad, 0xc5, 0x00,
0x73, 0x9b, 0xbb, 0x65, 0xa7, 0x46, 0x74, 0xcd, 0x2e, 0x61, 0x0f, 0xac, 0xeb, 0x53, 0x5a, 0x87, 0x70, 0xfc, 0x5d, 0x2e, 0xa1, 0xe3, 0x9a, 0x87, 0x01, 0x0f,
0x2e, 0xef, 0x10, 0xe2, 0x82, 0xd8, 0x12, 0xe7, 0xb8, 0x94, 0xa4, 0xdd, 0x5f, 0xea, 0x21, 0x63, 0x26, 0x43, 0xec, 0xc3, 0x54, 0x76, 0xb1, 0xb2, 0x1c, 0x03,
0x4c, 0x5c, 0x22, 0xb5, 0x00, 0x7d, 0x77, 0x3a, 0xb6, 0xbf, 0x50, 0xbd, 0xfd, 0x0a, 0x31, 0x2c, 0xdc, 0xab, 0xe2, 0xc0, 0x0b, 0xb6, 0x66, 0xad, 0x9c, 0xca,
0x94, 0xed, 0xd8, 0x77, 0x1b, 0xf1, 0x94, 0xdd, 0x65, 0x61, 0xda, 0x7b, 0x04, 0x3c, 0x93, 0xcf, 0x96, 0x74, 0x35, 0x8e, 0x41, 0xe1, 0xa4, 0xbc, 0xf2, 0x4f,
0xe9, 0xb8, 0x16, 0x55, 0x05, 0x5a, 0xac, 0x10, 0xd3, 0xdf, 0xea, 0x6a, 0xf8, 0xe0, 0xf3, 0xdf, 0x66, 0x00, 0xab, 0x3d, 0xb9, 0x44, 0x65, 0x34, 0x49, 0x89,
0xf2, 0x1d, 0x09, 0xc9, 0xfc, 0xa5, 0x84, 0xa1, 0x03, 0x5b, 0x7a, 0x5c, 0x7e, 0x21, 0xe9, 0xb4, 0x3a, 0x4c, 0x2b, 0x94, 0x64, 0x1d, 0x9b, 0xa5, 0xbf, 0x7e,
0x1c, 0x97, 0x7e, 0x3d, 0xbe, 0x84, 0xfc, 0xab, 0x6d, 0x2a, 0x50, 0x23, 0x9e, 0x11, 0x3f, 0xe2, 0xa0, 0x68, 0xe7, 0xd5, 0xba, 0x5e, 0x24, 0x8c, 0x4c, 0x46,
0xe6, 0x5b, 0x10, 0xc3, 0x82, 0x32, 0x17, 0x32, 0xdc, 0xec, 0xaa, 0x1e, 0x73, 0xe5, 0x7d, 0xb8, 0x1c, 0x6c, 0x4c, 0x9f, 0x60, 0x7b, 0x66, 0x4c, 0x90, 0x69,
0xc4, 0x23, 0x66, 0x67, 0xce, 0x6d, 0x24, 0x1d, 0xcc, 0x8e, 0x78, 0xa1, 0xa7, 0xde, 0x87, 0x81, 0xac, 0x62, 0x54, 0xbc, 0x47, 0x82, 0x3c, 0xad, 0x92, 0x29,
0xd9, 0xc0, 0xed, 0x0c, 0x11, 0x0e, 0xc5, 0x75, 0xa4, 0xbd, 0xbf, 0xcb, 0x3a, 0xaf, 0x2b, 0x9f, 0xbe, 0xbb, 0xbc, 0x31, 0x07, 0xa7, 0xbe, 0x6c, 0xa9, 0x4e,
0xff, 0x35, 0x80, 0x2f, 0x09, 0x77, 0xe0, 0xc0, 0xdc, 0x9c, 0xc6, 0xa6, 0x63, 0xab, 0x47, 0x74, 0x5f, 0x5c, 0xae, 0x75, 0xbf, 0x42, 0x67, 0x55, 0x89, 0xcf,
0xd3, 0x65, 0x8d, 0x5b, 0x6f, 0x5c, 0xf9, 0xd1, 0x78, 0xa2, 0xfd, 0x4f, 0x54, 0x6a, 0x71, 0x0c, 0x58, 0x13, 0xb0, 0x48, 0x0a, 0x7b, 0xcc, 0x84, 0x61, 0xa7,
0x7d, 0x39, 0xa2, 0xd1, 0xc0, 0xdb, 0x8e, 0x97, 0x20, 0x86, 0x97, 0x20, 0xda, 0xca, 0x56, 0x78, 0x61, 0xc2, 0x2f, 0x36, 0xdb, 0x95, 0xae, 0x7e, 0x8d, 0x97,
0xcb, 0x45, 0x6a, 0x6d, 0x27, 0xaa, 0xab, 0x4e, 0x88, 0x23, 0xb6, 0x6a, 0x8a, 0xca, 0x71, 0xca, 0x39, 0xa2, 0x98, 0x0d, 0x53, 0xa9, 0x38, 0xd5, 0x9c, 0x5d,
0x0e, 0x5e, 0xc9, 0xeb, 0x21, 0xab, 0x00, 0xca, 0xff, 0x92, 0x20, 0x9d, 0x65, 0x9d, 0x8d, 0x49, 0x46, 0xbe, 0x51, 0x97, 0xc1, 0x61, 0x02, 0x9e, 0xa8, 0xb9,
0x2c, 0x27, 0x7d, 0x73, 0xf9, 0x12, 0x16, 0x45, 0x25, 0xbb, 0xb0, 0x51, 0x14, 0x18, 0x07, 0xab, 0xc7, 0x06, 0xc0, 0xe9, 0x1c, 0xf8, 0x6d, 0xe1, 0x80, 0x21,
0x21, 0x68, 0x24, 0xf7, 0x28, 0xb9, 0x07, 0xd4, 0xd7, 0xdf, 0x3e, 0xff, 0xbc, 0xe3, 0xbc, 0x6e, 0x42, 0x76, 0x63, 0xbc, 0x82, 0x0a, 0xf5, 0x99, 0x65, 0x17,
0xd2, 0x38, 0xa9, 0xa8, 0x31, 0xce, 0x1f, 0xf7, 0xef, 0x8d, 0x94, 0xae, 0x99, 0x50, 0x30, 0x12, 0xbd, 0x4b, 0x65, 0x56, 0x59, 0xfb, 0x33, 0x7b, 0x99, 0xc7,
0xe5, 0x80, 0xe6, 0x92, 0x0e, 0x44, 0x1d, 0x17, 0xc2, 0xd0, 0x78, 0x76, 0x9d, 0x5b, 0x7d, 0x3c, 0xb4, 0xf8, 0xcb, 0x2f, 0x83, 0x23, 0x35, 0x49, 0xc0, 0x78,
0x2d, 0x44, 0x05, 0x64, 0x0f, 0xaa, 0x84, 0x9d, 0x3f, 0xac, 0xef, 0x5b, 0x46, 0x44, 0xb8, 0x15, 0xbe, 0x4f, 0xe7, 0x25, 0xb7, 0xa0, 0xc8, 0x0f, 0x70, 0x1a,
0xca, 0x7f, 0xce, 0x79, 0x7b, 0xf5, 0x7e, 0x21, 0x35, 0xc7, 0x0e, 0x99, 0xdc, 0x76, 0xe0, 0x36, 0x09, 0x6e, 0x6d, 0x5f, 0x98, 0x5e, 0xb8, 0xa4, 0x88, 0xea,
0x0b, 0x4b, 0x21, 0xa2, 0x52, 0x86, 0x95, 0x4e, 0x18, 0xac, 0xa2, 0xaf, 0x29, 0x5b, 0xe7, 0x05, 0xa1, 0xc8, 0xe1, 0x80, 0xfa, 0xb6, 0x5a, 0xed, 0x94, 0x32,
0x4f, 0xe9, 0xf5, 0xf0, 0x61, 0x5d, 0x7f, 0xc4, 0xc4, 0xd1, 0x05, 0x54, 0x13, 0xdb};
/*
* packet_build_tcp()
* -> ETH->IPv6->UDP->GTP->IPv4->TCP
* -> with TCP payload
*/
#if 1
TEST(PACKET_BUILD_TCP, ETH_IP6_UDP_GTP_IP4_TCP)
{
struct packet orig_pkt;
memset(&orig_pkt, 0, sizeof(orig_pkt));
packet_parse(&orig_pkt, (const char *)data3, sizeof(data3));
PRINT_GREEN("origin packet:");
packet_print(&orig_pkt);
struct packet *new_pkt = packet_build_tcp(&orig_pkt, 1, 2, TH_ACK, NULL, 0, "Hello", 5);
EXPECT_TRUE(new_pkt != nullptr);
PRINT_GREEN("new packet:");
packet_print(new_pkt);
packet_dump_hex(new_pkt, STDOUT_FILENO);
packet_dump_pcap(new_pkt, "craft-eth-ipv6-udp-gtp-ipv4-tcp.pcap");
const char *orig_pkt_data = packet_get_raw_data(&orig_pkt);
uint16_t orig_pkt_len = packet_get_raw_len(&orig_pkt);
const char *new_pkt_data = packet_get_raw_data(new_pkt);
uint16_t new_pkt_len = packet_get_raw_len(new_pkt);
EXPECT_TRUE(orig_pkt_len - 12 - 1348 == // trim TCP options, TCP payload
new_pkt_len - 5); // trim TCP payload
int count = packet_get_layer_count(new_pkt);
for (int i = 0; i < count; i++)
{
const struct layer *layer = packet_get_layer_by_idx(new_pkt, i);
if (layer->proto == LAYER_PROTO_IPV6)
{
const struct ip6_hdr *ip6 = (const struct ip6_hdr *)layer->hdr.raw;
EXPECT_TRUE(ip6_hdr_get_payload_len(ip6) == 61);
break;
}
if (layer->proto == LAYER_PROTO_UDP)
{
const struct udphdr *udp = (const struct udphdr *)layer->hdr.raw;
EXPECT_TRUE(udp_hdr_get_total_len(udp) == 61);
EXPECT_TRUE(udp_hdr_get_checksum(udp) == 0xd375);
break;
}
if (layer->proto == LAYER_PROTO_GTP_U)
{
EXPECT_TRUE(peek_gtp_version(layer->hdr.raw, layer->hdr_len) == 1);
const struct gtp1_hdr *gtp1 = (const struct gtp1_hdr *)layer->hdr.raw;
EXPECT_TRUE(gtp1_hdr_get_msg_len(gtp1) == 45);
break;
}
if (layer->proto == LAYER_PROTO_IPV4)
{
const struct ip *ip = (const struct ip *)layer->hdr.raw;
EXPECT_TRUE(ip4_hdr_get_total_len(ip) == 45);
EXPECT_TRUE(ip4_hdr_get_checksum(ip) == 0x4906);
break;
}
if (layer->proto == LAYER_PROTO_TCP)
{
const struct tcphdr *tcp = (const struct tcphdr *)layer->hdr.raw;
EXPECT_TRUE(tcp_hdr_get_seq(tcp) == 1);
EXPECT_TRUE(tcp_hdr_get_ack(tcp) == 2);
EXPECT_TRUE(tcp_hdr_get_flags(tcp) == TH_ACK);
EXPECT_TRUE(tcp_hdr_get_hdr_len(tcp) == 20);
EXPECT_TRUE(tcp_hdr_get_checksum(tcp) == 0xcce5);
break;
}
}
for (uint16_t i = 0; i < new_pkt_len - 5; i++)
{
if (18 <= i && i <= 19) // skip IPv6 payload length
{
continue;
}
if ((58 <= i && i <= 59) || // skip UDP length
(60 <= i && i <= 61)) // skip UDP checksum
{
continue;
}
if ((64 <= i && i <= 65)) // skip gtp length
{
continue;
}
if ((72 <= i && i <= 73) || // skip IPv4 total length
(80 <= i && i <= 81)) // skip IPv4 checksum
{
continue;
}
if ((94 <= i && i <= 98) || // skip TCP seq
(99 <= i && i <= 103) || // skip TCP ack
i == 104 || // skip TCP data offset
i == 105 || // skip TCP flags
(106 <= i && i <= 107)) // skip TCP checksum
{
continue;
}
// printf(("idx: %d, orig: %02x, new: %02x\n"), i, orig_pkt_data[i], new_pkt_data[i]);
EXPECT_TRUE(orig_pkt_data[i] == new_pkt_data[i]);
}
packet_free(new_pkt);
}
#endif
/******************************************************************************
* [Protocols in frame: eth:ethertype:ip:gre:ipv6:tcp]
******************************************************************************
*
* Frame 1: 102 bytes on wire (816 bits), 102 bytes captured (816 bits)
* Ethernet II, Src: a0:b1:c2:d3:e4:f5 (a0:b1:c2:d3:e4:f5), Dst: CIMSYS_33:44:55 (00:11:22:33:44:55)
* Destination: CIMSYS_33:44:55 (00:11:22:33:44:55)
* Address: CIMSYS_33:44:55 (00:11:22:33:44:55)
* .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
* .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
* Source: a0:b1:c2:d3:e4:f5 (a0:b1:c2:d3:e4:f5)
* Address: a0:b1:c2:d3:e4:f5 (a0:b1:c2:d3:e4:f5)
* .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
* .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
* Type: IPv4 (0x0800)
* Internet Protocol Version 4, Src: 10.0.0.1, Dst: 192.168.1.1
* 0100 .... = Version: 4
* .... 0101 = Header Length: 20 bytes (5)
* Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
* 0000 00.. = Differentiated Services Codepoint: Default (0)
* .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
* Total Length: 88
* Identification: 0x0001 (1)
* 000. .... = Flags: 0x0
* 0... .... = Reserved bit: Not set
* .0.. .... = Don't fragment: Not set
* ..0. .... = More fragments: Not set
* ...0 0000 0000 0000 = Fragment Offset: 0
* Time to Live: 64
* Protocol: Generic Routing Encapsulation (47)
* Header Checksum: 0xaecc [correct]
* [Header checksum status: Good]
* [Calculated Checksum: 0xaecc]
* Source Address: 10.0.0.1
* Destination Address: 192.168.1.1
* Generic Routing Encapsulation (IPv6)
* Flags and Version: 0x8000
* 1... .... .... .... = Checksum Bit: Yes
* .0.. .... .... .... = Routing Bit: No
* ..0. .... .... .... = Key Bit: No
* ...0 .... .... .... = Sequence Number Bit: No
* .... 0... .... .... = Strict Source Route Bit: No
* .... .000 .... .... = Recursion control: 0
* .... .... 0000 0... = Flags (Reserved): 0
* .... .... .... .000 = Version: GRE (0)
* Protocol Type: IPv6 (0x86dd)
* Checksum: 0x92e7 [correct]
* [Checksum Status: Good]
* Offset: 0
* Internet Protocol Version 6, Src: ::, Dst: 2001:db8::1
* 0110 .... = Version: 6
* .... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)
* .... 0000 00.. .... .... .... .... .... = Differentiated Services Codepoint: Default (0)
* .... .... ..00 .... .... .... .... .... = Explicit Congestion Notification: Not ECN-Capable Transport (0)
* .... 0000 0000 0000 0000 0000 = Flow Label: 0x00000
* Payload Length: 20
* Next Header: TCP (6)
* Hop Limit: 64
* Source Address: ::
* Destination Address: 2001:db8::1
* Transmission Control Protocol, Src Port: 12345, Dst Port: 80, Seq: 0, Len: 0
* Source Port: 12345
* Destination Port: 80
* [Stream index: 0]
* [Conversation completeness: Incomplete, SYN_SENT (1)]
* ..0. .... = RST: Absent
* ...0 .... = FIN: Absent
* .... 0... = Data: Absent
* .... .0.. = ACK: Absent
* .... ..0. = SYN-ACK: Absent
* .... ...1 = SYN: Present
* [Completeness Flags: ·····S]
* [TCP Segment Len: 0]
* Sequence Number: 0
* [Next Sequence Number: 1]
* Acknowledgment Number: 0
* Acknowledgment number (raw): 0
* 0101 .... = Header Length: 20 bytes (5)
* Flags: 0x002 (SYN)
* 000. .... .... = Reserved: Not set
* ...0 .... .... = Accurate ECN: Not set
* .... 0... .... = Congestion Window Reduced: Not set
* .... .0.. .... = ECN-Echo: Not set
* .... ..0. .... = Urgent: Not set
* .... ...0 .... = Acknowledgment: Not set
* .... .... 0... = Push: Not set
* .... .... .0.. = Reset: Not set
* .... .... ..1. = Syn: Set
* [Expert Info (Chat/Sequence): Connection establish request (SYN): server port 80]
* [Connection establish request (SYN): server port 80]
* [Severity level: Chat]
* [Group: Sequence]
* .... .... ...0 = Fin: Not set
* [TCP Flags: ··········S·]
* Window: 8192
* [Calculated window size: 8192]
* Checksum: 0x31a0 [correct]
* [Calculated Checksum: 0x31a0]
* [Checksum Status: Good]
* Urgent Pointer: 0
* [Timestamps]
* [Time since first frame in this TCP stream: 0.000000000 seconds]
* [Time since previous frame in this TCP stream: 0.000000000 seconds]
*/
unsigned char data4[] = {
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0xa0, 0xb1, 0xc2, 0xd3, 0xe4, 0xf5, 0x08, 0x00, 0x45, 0x00, 0x00, 0x58, 0x00, 0x01, 0x00, 0x00, 0x40, 0x2f, 0xae, 0xcc,
0x0a, 0x00, 0x00, 0x01, 0xc0, 0xa8, 0x01, 0x01, 0x80, 0x00, 0x86, 0xdd, 0x92, 0xe7, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x14, 0x06, 0x40, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x01, 0x30, 0x39, 0x00, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0x02, 0x20, 0x00, 0x31, 0xa0, 0x00, 0x00};
/*
* packet_build_tcp()
* -> ETH->IPv4->GRE->IPv6->TCP
* -> with TCP payload
* -> with GRE checksum
*/
#if 1
TEST(PACKET_BUILD_TCP, ETH_IP4_GRE_IP6_TCP)
{
struct packet orig_pkt;
memset(&orig_pkt, 0, sizeof(orig_pkt));
packet_parse(&orig_pkt, (const char *)data4, sizeof(data4));
PRINT_GREEN("origin packet:");
packet_print(&orig_pkt);
struct packet *new_pkt = packet_build_tcp(&orig_pkt, 1, 2, TH_ACK, NULL, 0, "Hello", 5);
EXPECT_TRUE(new_pkt != nullptr);
PRINT_GREEN("new packet:");
packet_print(new_pkt);
packet_dump_hex(new_pkt, STDOUT_FILENO);
packet_dump_pcap(new_pkt, "craft-eth-ipv4-gre-ipv6-tcp.pcap");
const char *orig_pkt_data = packet_get_raw_data(&orig_pkt);
uint16_t orig_pkt_len = packet_get_raw_len(&orig_pkt);
const char *new_pkt_data = packet_get_raw_data(new_pkt);
uint16_t new_pkt_len = packet_get_raw_len(new_pkt);
EXPECT_TRUE(orig_pkt_len ==
new_pkt_len - 5); // trim TCP payload
int count = packet_get_layer_count(new_pkt);
for (int i = 0; i < count; i++)
{
const struct layer *layer = packet_get_layer_by_idx(new_pkt, i);
if (layer->proto == LAYER_PROTO_IPV4)
{
const struct ip *ip = (const struct ip *)layer->hdr.raw;
EXPECT_TRUE(ip4_hdr_get_total_len(ip) == 93);
EXPECT_TRUE(ip4_hdr_get_checksum(ip) == 0xaec7);
break;
}
if (layer->proto == LAYER_PROTO_GRE)
{
const struct gre0_hdr *gre = (const struct gre0_hdr *)layer->hdr.raw;
EXPECT_TRUE(gre0_hdr_get_version(gre) == 0);
EXPECT_TRUE(gre0_hdr_get_checksum(gre) == 0x92e7);
break;
}
if (layer->proto == LAYER_PROTO_IPV6)
{
const struct ip6_hdr *ip6 = (const struct ip6_hdr *)layer->hdr.raw;
EXPECT_TRUE(ip6_hdr_get_payload_len(ip6) == 25);
break;
}
if (layer->proto == LAYER_PROTO_TCP)
{
const struct tcphdr *tcp = (const struct tcphdr *)layer->hdr.raw;
EXPECT_TRUE(tcp_hdr_get_seq(tcp) == 1);
EXPECT_TRUE(tcp_hdr_get_ack(tcp) == 2);
EXPECT_TRUE(tcp_hdr_get_flags(tcp) == TH_ACK);
EXPECT_TRUE(tcp_hdr_get_hdr_len(tcp) == 20);
EXPECT_TRUE(tcp_hdr_get_checksum(tcp) == 0x0db8);
break;
}
}
for (uint16_t i = 0; i < new_pkt_len - 5; i++)
{
if ((16 <= i && i <= 17) || // skip IP total length
(24 <= i && i <= 25)) // skip IP checksum
{
continue;
}
if (38 <= i && i <= 39) // skip GRE checksum
{
continue;
}
if (47 <= i && i <= 48) // skip IPv6 payload length
{
continue;
}
if ((86 <= i && i <= 89) || // skip TCP seq
(90 <= i && i <= 93) || // skip TCP ack
i == 95 || // skip TCP flags
(98 <= i && i <= 99)) // skip TCP checksum
{
continue;
}
// printf(("idx: %d, orig: %02x, new: %02x\n"), i, orig_pkt_data[i], new_pkt_data[i]);
EXPECT_TRUE(orig_pkt_data[i] == new_pkt_data[i]);
}
packet_free(new_pkt);
}
#endif
/******************************************************************************
* [Protocols in frame: eth:ethertype:vlan:ethertype:ipv6:ip:gre:ppp:ip:udp:dns]
******************************************************************************
*
* Frame 1: 197 bytes on wire (1576 bits), 197 bytes captured (1576 bits)
* Ethernet II, Src: JuniperNetwo_f2:61:3d (00:12:1e:f2:61:3d), Dst: c5:00:00:00:82:c4 (c5:00:00:00:82:c4)
* Destination: c5:00:00:00:82:c4 (c5:00:00:00:82:c4)
* Source: JuniperNetwo_f2:61:3d (00:12:1e:f2:61:3d)
* Type: 802.1Q Virtual LAN (0x8100)
* 802.1Q Virtual LAN, PRI: 0, DEI: 0, ID: 100
* 000. .... .... .... = Priority: Best Effort (default) (0)
* ...0 .... .... .... = DEI: Ineligible
* .... 0000 0110 0100 = ID: 100
* Type: IPv6 (0x86dd)
* Internet Protocol Version 6, Src: 2402:f000:1:8e01::5555, Dst: 2607:fcd0:100:2300::b108:2a6b
* 0110 .... = Version: 6
* .... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)
* .... 0000 00.. .... .... .... .... .... = Differentiated Services Codepoint: Default (0)
* .... .... ..00 .... .... .... .... .... = Explicit Congestion Notification: Not ECN-Capable Transport (0)
* .... 0000 0000 0000 0000 0000 = Flow Label: 0x00000
* Payload Length: 139
* Next Header: IPIP (4)
* Hop Limit: 246
* Source Address: 2402:f000:1:8e01::5555
* Destination Address: 2607:fcd0:100:2300::b108:2a6b
* Internet Protocol Version 4, Src: 16.0.0.200, Dst: 192.52.166.154
* 0100 .... = Version: 4
* .... 0101 = Header Length: 20 bytes (5)
* Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
* 0000 00.. = Differentiated Services Codepoint: Default (0)
* .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
* Total Length: 139
* Identification: 0x8caf (36015)
* 000. .... = Flags: 0x0
* 0... .... = Reserved bit: Not set
* .0.. .... = Don't fragment: Not set
* ..0. .... = More fragments: Not set
* ...0 0000 0000 0000 = Fragment Offset: 0
* Time to Live: 64
* Protocol: Generic Routing Encapsulation (47)
* Header Checksum: 0x75fe [correct]
* [Header checksum status: Good]
* [Calculated Checksum: 0x75fe]
* Source Address: 16.0.0.200
* Destination Address: 192.52.166.154
* Generic Routing Encapsulation (PPP)
* Flags and Version: 0x3081
* 0... .... .... .... = Checksum Bit: No
* .0.. .... .... .... = Routing Bit: No
* ..1. .... .... .... = Key Bit: Yes
* ...1 .... .... .... = Sequence Number Bit: Yes
* .... 0... .... .... = Strict Source Route Bit: No
* .... .000 .... .... = Recursion control: 0
* .... .... 1... .... = Acknowledgment: Yes
* .... .... .000 0... = Flags (Reserved): 0
* .... .... .... .001 = Version: Enhanced GRE (1)
* Protocol Type: PPP (0x880b)
* Payload Length: 103
* Call ID: 6016
* Sequence Number: 430001
* Acknowledgment Number: 539254
* Point-to-Point Protocol
* Address: 0xff
* Control: 0x03
* Protocol: Internet Protocol version 4 (0x0021)
* Internet Protocol Version 4, Src: 172.16.44.3, Dst: 8.8.8.8
* 0100 .... = Version: 4
* .... 0101 = Header Length: 20 bytes (5)
* Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
* 0000 00.. = Differentiated Services Codepoint: Default (0)
* .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
* Total Length: 99
* Identification: 0x0000 (0)
* 010. .... = Flags: 0x2, Don't fragment
* 0... .... = Reserved bit: Not set
* .1.. .... = Don't fragment: Set
* ..0. .... = More fragments: Not set
* ...0 0000 0000 0000 = Fragment Offset: 0
* Time to Live: 60
* Protocol: UDP (17)
* Header Checksum: 0x5667 [correct]
* [Header checksum status: Good]
* [Calculated Checksum: 0x5667]
* Source Address: 172.16.44.3
* Destination Address: 8.8.8.8
* User Datagram Protocol, Src Port: 40768, Dst Port: 53
* Source Port: 40768
* Destination Port: 53
* Length: 79
* Checksum: 0x2d23 [correct]
* [Calculated Checksum: 0x2d23]
* [Checksum Status: Good]
* [Stream index: 0]
* [Timestamps]
* [Time since first frame: 0.000000000 seconds]
* [Time since previous frame: 0.000000000 seconds]
* UDP payload (71 bytes)
* Domain Name System (query)
* Transaction ID: 0xa62c
* Flags: 0x0100 Standard query
* 0... .... .... .... = Response: Message is a query
* .000 0... .... .... = Opcode: Standard query (0)
* .... ..0. .... .... = Truncated: Message is not truncated
* .... ...1 .... .... = Recursion desired: Do query recursively
* .... .... .0.. .... = Z: reserved (0)
* .... .... ...0 .... = Non-authenticated data: Unacceptable
* Questions: 1
* Answer RRs: 0
* Authority RRs: 0
* Additional RRs: 0
* Queries
* xqt-detect-mode2-97712e88-167a-45b9-93ee-913140e76678: type AAAA, class IN
* Name: xqt-detect-mode2-97712e88-167a-45b9-93ee-913140e76678
* [Name Length: 53]
* [Label Count: 1]
* Type: AAAA (28) (IP6 Address)
* Class: IN (0x0001)
* [Response In: 2]
*/
unsigned char data5[] = {
0xc5, 0x00, 0x00, 0x00, 0x82, 0xc4, 0x00, 0x12, 0x1e, 0xf2, 0x61, 0x3d, 0x81, 0x00, 0x00, 0x64, 0x86, 0xdd, 0x60, 0x00, 0x00, 0x00, 0x00, 0x8b, 0x04, 0xf6,
0x24, 0x02, 0xf0, 0x00, 0x00, 0x01, 0x8e, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x55, 0x26, 0x07, 0xfc, 0xd0, 0x01, 0x00, 0x23, 0x00, 0x00, 0x00,
0x00, 0x00, 0xb1, 0x08, 0x2a, 0x6b, 0x45, 0x00, 0x00, 0x8b, 0x8c, 0xaf, 0x00, 0x00, 0x40, 0x2f, 0x75, 0xfe, 0x10, 0x00, 0x00, 0xc8, 0xc0, 0x34, 0xa6, 0x9a,
0x30, 0x81, 0x88, 0x0b, 0x00, 0x67, 0x17, 0x80, 0x00, 0x06, 0x8f, 0xb1, 0x00, 0x08, 0x3a, 0x76, 0xff, 0x03, 0x00, 0x21, 0x45, 0x00, 0x00, 0x63, 0x00, 0x00,
0x40, 0x00, 0x3c, 0x11, 0x56, 0x67, 0xac, 0x10, 0x2c, 0x03, 0x08, 0x08, 0x08, 0x08, 0x9f, 0x40, 0x00, 0x35, 0x00, 0x4f, 0x2d, 0x23, 0xa6, 0x2c, 0x01, 0x00,
0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x35, 0x78, 0x71, 0x74, 0x2d, 0x64, 0x65, 0x74, 0x65, 0x63, 0x74, 0x2d, 0x6d, 0x6f, 0x64, 0x65, 0x32, 0x2d,
0x39, 0x37, 0x37, 0x31, 0x32, 0x65, 0x38, 0x38, 0x2d, 0x31, 0x36, 0x37, 0x61, 0x2d, 0x34, 0x35, 0x62, 0x39, 0x2d, 0x39, 0x33, 0x65, 0x65, 0x2d, 0x39, 0x31,
0x33, 0x31, 0x34, 0x30, 0x65, 0x37, 0x36, 0x36, 0x37, 0x38, 0x00, 0x00, 0x1c, 0x00, 0x01};
/*
* packet_build_udp()
* -> ETH->VLAN->IPv6->IPv4->GRE->PPP->IPv4->UDP->DNS
* -> with UDP payload
* -> with GRE payload length
*/
#if 1
TEST(PACKET_BUILD_UDP, ETH_VLAN_IPv6_IPv4_GRE_PPP_IPv4_UDP_DNS)
{
struct packet orig_pkt;
memset(&orig_pkt, 0, sizeof(orig_pkt));
packet_parse(&orig_pkt, (const char *)data5, sizeof(data5));
PRINT_GREEN("origin packet:");
packet_print(&orig_pkt);
struct packet *new_pkt = packet_build_udp(&orig_pkt, "Hello", 5);
EXPECT_TRUE(new_pkt != nullptr);
PRINT_GREEN("new packet:");
packet_print(new_pkt);
packet_dump_hex(new_pkt, STDOUT_FILENO);
packet_dump_pcap(new_pkt, "craft-eth-vlan-ipv6-ipv4-gre-ppp-ipv4-udp-dns.pcap");
const char *orig_pkt_data = packet_get_raw_data(&orig_pkt);
uint16_t orig_pkt_len = packet_get_raw_len(&orig_pkt);
const char *new_pkt_data = packet_get_raw_data(new_pkt);
uint16_t new_pkt_len = packet_get_raw_len(new_pkt);
EXPECT_TRUE(orig_pkt_len - 71 == // trim DNS payload
new_pkt_len - 5); // trim UDP payload
int flag = 0;
int count = packet_get_layer_count(new_pkt);
for (int i = 0; i < count; i++)
{
const struct layer *layer = packet_get_layer_by_idx(new_pkt, i);
if (layer->proto == LAYER_PROTO_IPV6)
{
const struct ip6_hdr *ip6 = (const struct ip6_hdr *)layer->hdr.raw;
EXPECT_TRUE(ip6_hdr_get_payload_len(ip6) == 73);
}
if (layer->proto == LAYER_PROTO_IPV4)
{
const struct ip *ip = (const struct ip *)layer->hdr.raw;
if (flag == 0)
{
EXPECT_TRUE(ip4_hdr_get_total_len(ip) == 73);
EXPECT_TRUE(ip4_hdr_get_checksum(ip) == 0x7640);
}
else
{
EXPECT_TRUE(ip4_hdr_get_total_len(ip) == 33);
EXPECT_TRUE(ip4_hdr_get_checksum(ip) == 0x56a9);
}
flag++;
}
if (layer->proto == LAYER_PROTO_GRE)
{
const struct gre1_hdr *gre = (const struct gre1_hdr *)layer->hdr.raw;
EXPECT_TRUE(gre1_hdr_get_version(gre) == 1);
EXPECT_TRUE(gre1_hdr_get_payload_length(gre) == 37);
}
if (layer->proto == LAYER_PROTO_UDP)
{
const struct udphdr *udp = (const struct udphdr *)layer->hdr.raw;
EXPECT_TRUE(udp_hdr_get_total_len(udp) == 13);
EXPECT_TRUE(udp_hdr_get_checksum(udp) == 0x5469);
}
}
for (uint16_t i = 0; i < new_pkt_len - 5; i++)
{
if (22 <= i && i <= 23) /// skip IPv6 payload length
{
continue;
}
if ((60 <= i && i <= 61) || // skip IPv4 total length
(68 <= i && i <= 69)) // skip IPv4 checksum
{
continue;
}
if ((82 <= i && i <= 83)) // skip GRE payload length
{
continue;
}
if ((100 <= i && i <= 101) || // skip IPv4 total length
(108 <= i && i <= 109)) // skip IPv4 checksum
{
continue;
}
if ((122 <= i && i <= 123) || // skip UDP total length
(124 <= i && i <= 125)) // skip UDP checksum
{
continue;
}
// printf(("idx: %d, orig: %02x, new: %02x\n"), i, orig_pkt_data[i], new_pkt_data[i]);
EXPECT_TRUE(orig_pkt_data[i] == new_pkt_data[i]);
}
packet_free(new_pkt);
}
#endif
/*
* packet_build_l3()
* -> ETH->IPv4->ICMP
* -> ICMPv4 checkum not include the pseudo-header of IPv4 header
*/
#if 1
TEST(PACKET_BUILD_L3, ETH_IP4_ICMP)
{
/*
* Internet Control Message Protocol
* Type: 8 (Echo (ping) request)
* Code: 0
* Checksum: 0xaa4f [correct]
* [Checksum Status: Good]
* Identifier (BE): 27498 (0x6b6a)
* Identifier (LE): 27243 (0x6a6b)
* Sequence Number (BE): 0 (0x0000)
* Sequence Number (LE): 0 (0x0000)
* [Response frame: 31]
* Timestamp from icmp data: Aug 2, 2024 10:51:12.214771000 CST
* [Timestamp from icmp data (relative): 0.000093000 seconds]
* Data (48 bytes)
* Data: 08090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637
* [Length: 48]
*/
unsigned char icmp_resp[] = {
0x08, 0x00, 0xaa, 0x4f, 0x6b, 0x6a, 0x00, 0x00, 0x66, 0xac, 0x49, 0xa0, 0x00, 0x03, 0x46, 0xf3, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29,
0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37};
struct packet orig_pkt;
memset(&orig_pkt, 0, sizeof(orig_pkt));
packet_parse(&orig_pkt, (const char *)data1, sizeof(data1));
PRINT_GREEN("origin packet:");
packet_print(&orig_pkt);
struct icmphdr *icmp = (struct icmphdr *)icmp_resp;
icmp->checksum = 0;
icmp->checksum = checksum(icmp, sizeof(icmp_resp));
struct packet *new_pkt = packet_build_l3(&orig_pkt, IPPROTO_ICMP, (const char *)icmp_resp, sizeof(icmp_resp));
EXPECT_TRUE(new_pkt != nullptr);
PRINT_GREEN("new packet:");
packet_print(new_pkt);
packet_dump_hex(new_pkt, STDOUT_FILENO);
packet_dump_pcap(new_pkt, "craft-eth-ipv4-icmpv4.pcap");
const char *orig_pkt_data = packet_get_raw_data(&orig_pkt);
uint16_t orig_pkt_len = packet_get_raw_len(&orig_pkt);
const char *new_pkt_data = packet_get_raw_data(new_pkt);
uint16_t new_pkt_len = packet_get_raw_len(new_pkt);
EXPECT_TRUE(orig_pkt_len - 20 - 6 == // trim Eth padding, trim TCP header
new_pkt_len - 64); // trim ICMP
int count = packet_get_layer_count(new_pkt);
for (int i = 0; i < count; i++)
{
const struct layer *layer = packet_get_layer_by_idx(new_pkt, i);
if (layer->proto == LAYER_PROTO_IPV4)
{
const struct ip *ip = (const struct ip *)layer->hdr.raw;
EXPECT_TRUE(ip4_hdr_get_total_len(ip) == 84);
EXPECT_TRUE(ip4_hdr_get_checksum(ip) == 0xb7cb);
break;
}
if (layer->proto == LAYER_PROTO_ICMP)
{
// TODO
break;
}
}
for (uint16_t i = 0; i < new_pkt_len - sizeof(icmp_resp); i++)
{
if ((16 <= i && i <= 17) || // skip IPv4 total length
23 == i || // skip IPv4 protocol
(24 <= i && i <= 25)) // skip IPv4 checksum
{
continue;
}
// printf(("idx: %d, orig: %02x, new: %02x\n"), i, orig_pkt_data[i], new_pkt_data[i]);
EXPECT_TRUE(orig_pkt_data[i] == new_pkt_data[i]);
}
packet_free(new_pkt);
}
#endif
/*
* packet_build_l3()
* -> ETH->IPv4->IPv6->ICMPv6
* -> ICMPv6 checkum need include the pseudo-header of IPv6 header
*/
#if 1
TEST(PACKET_BUILD_L3, ETH_IP6_ICMP)
{
/*
* Internet Control Message Protocol v6
* Type: Echo (ping) request (128)
* Code: 0
* Checksum: 0x7e8f [correct]
* [Checksum Status: Good]
* Identifier: 0x18dc
* Sequence: 0
* [Response In: 2]
* Data (52 bytes)
* Data: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f30313233
* [Length: 52]
*/
unsigned char icmp_resp[] = {
0x80, 0x00, 0x7e, 0x8f, 0x18, 0xdc, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29,
0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33};
struct packet orig_pkt;
memset(&orig_pkt, 0, sizeof(orig_pkt));
packet_parse(&orig_pkt, (const char *)data2, sizeof(data2));
PRINT_GREEN("origin packet:");
packet_print(&orig_pkt);
struct icmp6_hdr *icmp = (struct icmp6_hdr *)icmp_resp;
icmp->icmp6_cksum = 0;
int count = packet_get_layer_count(&orig_pkt);
for (int i = count - 1; i >= 0; i--)
{
const struct layer *layer = packet_get_layer_by_idx(&orig_pkt, i);
if (layer->proto == LAYER_PROTO_IPV6)
{
struct ip6_hdr *ip6 = (struct ip6_hdr *)layer->hdr.raw;
icmp->icmp6_cksum = checksum_v6(icmp, sizeof(icmp_resp), IPPROTO_ICMPV6, &ip6->ip6_src, &ip6->ip6_dst);
break;
}
}
struct packet *new_pkt = packet_build_l3(&orig_pkt, IPPROTO_ICMPV6, (const char *)icmp_resp, sizeof(icmp_resp));
EXPECT_TRUE(new_pkt != nullptr);
PRINT_GREEN("new packet:");
packet_print(new_pkt);
packet_dump_hex(new_pkt, STDOUT_FILENO);
packet_dump_pcap(new_pkt, "craft-eth-ipv4-ipv6-icmpv6.pcap");
const char *orig_pkt_data = packet_get_raw_data(&orig_pkt);
uint16_t orig_pkt_len = packet_get_raw_len(&orig_pkt);
const char *new_pkt_data = packet_get_raw_data(new_pkt);
uint16_t new_pkt_len = packet_get_raw_len(new_pkt);
EXPECT_TRUE(orig_pkt_len - 32 == // trim TCP header
new_pkt_len - 60); // trim ICMPv6 header
count = packet_get_layer_count(new_pkt);
for (int i = 0; i < count; i++)
{
const struct layer *layer = packet_get_layer_by_idx(new_pkt, i);
if (layer->proto == LAYER_PROTO_IPV4)
{
const struct ip *ip = (const struct ip *)layer->hdr.raw;
EXPECT_TRUE(ip4_hdr_get_total_len(ip) == 120);
EXPECT_TRUE(ip4_hdr_get_checksum(ip) == 0x09ac);
break;
}
if (layer->proto == LAYER_PROTO_IPV6)
{
const struct ip6_hdr *ip6 = (const struct ip6_hdr *)layer->hdr.raw;
EXPECT_TRUE(ip6_hdr_get_payload_len(ip6) == 60);
break;
}
if (layer->proto == LAYER_PROTO_ICMP6)
{
// TODO
break;
}
}
for (uint16_t i = 0; i < new_pkt_len - 60; i++)
{
if ((16 <= i && i <= 17) || // skip IPv4 total length
(24 <= i && i <= 25)) // skip IPv4 checksum
{
continue;
}
if (38 <= i && i <= 39) // skip IPv6 payload length
{
continue;
}
if (40 == i) // skip IPv6 next header
{
continue;
}
// printf(("idx: %d, orig: %02x, new: %02x\n"), i, orig_pkt_data[i], new_pkt_data[i]);
EXPECT_TRUE(orig_pkt_data[i] == new_pkt_data[i]);
}
packet_free(new_pkt);
}
#endif
int main(int argc, char **argv)
{
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}