diff --git a/src/packet/test/gtest_packet_build.cpp b/src/packet/test/gtest_packet_build.cpp index 013c2a0..128d1cf 100644 --- a/src/packet/test/gtest_packet_build.cpp +++ b/src/packet/test/gtest_packet_build.cpp @@ -2,8 +2,11 @@ #include #include "tcp_utils.h" -#include "ipv4_utils.h" -#include "ipv6_utils.h" +#include "udp_utils.h" +#include "ip4_utils.h" +#include "ip6_utils.h" +#include "gtp1_utils.h" +#include "gtp2_utils.h" #include "packet_def.h" #include "packet_dump.h" #include "packet_layer.h" @@ -154,7 +157,7 @@ TEST(PACKET_BUILD_TCP, ETH_IP4_TCP) if (layer.proto == LAYER_PROTO_IPV4) { const struct ip *ip = (struct ip *)layer.hdr.raw; - EXPECT_TRUE(ipv4_hdr_get_total_len(ip) == 57); + EXPECT_TRUE(ip4_hdr_get_total_len(ip) == 57); break; } if (layer.proto == LAYER_PROTO_TCP) @@ -290,13 +293,13 @@ TEST(PACKET_BUILD_TCP, ETH_IP4_IP6_TCP) if (layer.proto == LAYER_PROTO_IPV4) { const struct ip *ip = (struct ip *)layer.hdr.raw; - EXPECT_TRUE(ipv4_hdr_get_total_len(ip) == 85); + EXPECT_TRUE(ip4_hdr_get_total_len(ip) == 85); break; } if (layer.proto == LAYER_PROTO_IPV6) { const struct ip6_hdr *ip6 = (struct ip6_hdr *)layer.hdr.raw; - EXPECT_TRUE(ipv6_hdr_get_payload_len(ip6) == 25); + EXPECT_TRUE(ip6_hdr_get_payload_len(ip6) == 25); break; } if (layer.proto == LAYER_PROTO_TCP) @@ -339,6 +342,246 @@ TEST(PACKET_BUILD_TCP, ETH_IP4_IP6_TCP) } #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, 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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}; + +/* + * imitate_tcp_packet() + * -> 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 = imitate_tcp_packet(&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, "imitate-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 + struct layer layer; + PACKET_FOREACH_LAYER_INORDER(new_pkt, layer) + { + if (layer.proto == LAYER_PROTO_IPV6) + { + const struct ip6_hdr *ip6 = (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 = (struct udphdr *)layer.hdr.raw; + EXPECT_TRUE(udp_hdr_get_total_len(udp) == 61); + 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 = (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 = (struct ip *)layer.hdr.raw; + EXPECT_TRUE(ip4_hdr_get_total_len(ip) == 45); + break; + } + if (layer.proto == LAYER_PROTO_TCP) + { + const struct tcphdr *tcp = (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); + break; + } + } + + for (uint16_t i = 0; i < new_pkt_len - 5; i++) + { + if ((18 <= i && i <= 19) || // skip IPv6 payload length + i == 20) // skip IPv6 hop limit + { + continue; + } + if ((38 <= i && i <= 39) || // skip UDP length + (40 <= i && i <= 41)) // skip UDP checksum + { + continue; + } + if ((44 <= i && i <= 45)) // skip gtp length + { + continue; + } + if ((72 <= i && i <= 73) || // skip IPv4 total length + (74 <= i && i <= 75) || // skip IPv4 identification + i == 78 || // skip IPv4 TTL + (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 window + (108 <= i && i <= 109)) // 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]); + } +} +#endif + int main(int argc, char **argv) { ::testing::InitGoogleTest(&argc, argv);