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-rw-r--r--common/include/decode_gtp.h36
-rw-r--r--common/include/decode_ipv4.h55
-rw-r--r--common/include/decode_ipv6.h58
-rw-r--r--common/include/decode_tcp.h46
-rw-r--r--common/include/decode_udp.h40
-rw-r--r--common/include/public.h41
6 files changed, 276 insertions, 0 deletions
diff --git a/common/include/decode_gtp.h b/common/include/decode_gtp.h
new file mode 100644
index 0000000..87d9fd9
--- /dev/null
+++ b/common/include/decode_gtp.h
@@ -0,0 +1,36 @@
+#ifndef _DECODE_GTP_H
+#define _DECODE_GTP_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
+
+#include "public.h"
+
+ /* According to 3GPP TS 29.060. */
+ typedef struct gtp1_header_s
+ {
+ uint8_t flags;
+ uint8_t type;
+ uint16_t length;
+ uint32_t tid;
+ } __attribute__((packed)) gtp1_header_t;
+
+ typedef struct gtp_info_s
+ {
+ gtp1_header_t *hdr;
+ uint8_t *payload;
+
+ uint32_t hdr_len;
+ uint32_t payload_len;
+ } gtp_info_t;
+
+ int decode_gtp(gtp_info_t *packet, const uint8_t *data, uint32_t len);
+ void dump_gtp_info(uint32_t pkt_id, gtp_info_t *packet);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif \ No newline at end of file
diff --git a/common/include/decode_ipv4.h b/common/include/decode_ipv4.h
new file mode 100644
index 0000000..f3e3fa8
--- /dev/null
+++ b/common/include/decode_ipv4.h
@@ -0,0 +1,55 @@
+#ifndef _DECODE_IPV4_H
+#define _DECODE_IPV4_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
+
+#include "public.h"
+
+#define IPV4_HEADER_LEN 20
+
+ typedef struct ipv4_header_s
+ {
+ uint8_t ip_verhl; // version & header length
+ uint8_t ip_tos;
+ uint16_t ip_len;
+ uint16_t ip_id;
+ uint16_t ip_off;
+ uint8_t ip_ttl;
+ uint8_t ip_proto;
+ uint16_t ip_csum;
+ union
+ {
+ struct
+ {
+ struct in_addr ip_src;
+ struct in_addr ip_dst;
+ } ip4_un1;
+ uint16_t ip_addrs[4];
+ } ip4_hdrun1;
+ } __attribute__((__packed__)) ipv4_header_t;
+
+ typedef struct ipv4_info_s
+ {
+ char src_addr[INET_ADDRSTRLEN];
+ char dst_addr[INET_ADDRSTRLEN];
+
+ ipv4_header_t *hdr;
+ uint8_t *payload;
+ uint8_t next_protocol;
+
+ uint32_t hdr_len;
+ uint32_t opts_len;
+ uint32_t payload_len;
+ } ipv4_info_t;
+
+ int decode_ipv4(ipv4_info_t *packet, const uint8_t *data, uint32_t len);
+ void dump_ipv4_info(uint32_t pkt_id, ipv4_info_t *packet);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif \ No newline at end of file
diff --git a/common/include/decode_ipv6.h b/common/include/decode_ipv6.h
new file mode 100644
index 0000000..9bb0d36
--- /dev/null
+++ b/common/include/decode_ipv6.h
@@ -0,0 +1,58 @@
+#ifndef _DECODE_IPV6_H
+#define _DECODE_IPV6_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
+
+#include "public.h"
+
+#define IPV6_HEADER_LEN 40
+
+ typedef struct ipv6_header_s
+ {
+ union
+ {
+ struct ip6_un1_
+ {
+ uint32_t ip6_un1_flow; /* 20 bits of flow-ID */
+ uint16_t ip6_un1_plen; /* payload length */
+ uint8_t ip6_un1_nxt; /* next header */
+ uint8_t ip6_un1_hlim; /* hop limit */
+ } ip6_un1;
+ uint8_t ip6_un2_vfc; /* 4 bits version, top 4 bits class */
+ } ip6_hdrun;
+
+ union
+ {
+ struct
+ {
+ uint32_t ip6_src[4];
+ uint32_t ip6_dst[4];
+ } ip6_un2;
+ uint16_t ip6_addrs[16];
+ } ip6_hdrun2;
+ } __attribute__((__packed__)) ipv6_header_t;
+
+ typedef struct ipv6_info_s
+ {
+ char src_addr[INET6_ADDRSTRLEN];
+ char dst_addr[INET6_ADDRSTRLEN];
+
+ ipv6_header_t *hdr;
+ uint8_t *payload;
+ uint8_t next_protocol;
+
+ uint32_t hdr_len;
+ uint32_t payload_len;
+ } ipv6_info_t;
+
+ int decode_ipv6(ipv6_info_t *packet, const uint8_t *data, uint32_t len);
+ void dump_ipv6_info(uint32_t pkt_id, ipv6_info_t *packet);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif \ No newline at end of file
diff --git a/common/include/decode_tcp.h b/common/include/decode_tcp.h
new file mode 100644
index 0000000..27cc14b
--- /dev/null
+++ b/common/include/decode_tcp.h
@@ -0,0 +1,46 @@
+#ifndef _DECODE_TCP_H
+#define _DECODE_TCP_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
+
+#include "public.h"
+
+#define TCP_HEADER_LEN 20
+
+ typedef struct tcp_header_s
+ {
+ uint16_t th_sport; /**< source port */
+ uint16_t th_dport; /**< destination port */
+ uint32_t th_seq; /**< sequence number */
+ uint32_t th_ack; /**< acknowledgement number */
+ uint8_t th_offx2; /**< offset and reserved */
+ uint8_t th_flags; /**< pkt flags */
+ uint16_t th_win; /**< pkt window */
+ uint16_t th_sum; /**< checksum */
+ uint16_t th_urp; /**< urgent pointer */
+ } __attribute__((__packed__)) tcp_header_t;
+
+ typedef struct tcp_info_s
+ {
+ uint16_t src_port;
+ uint16_t dst_port;
+
+ tcp_header_t *hdr;
+ uint8_t *payload;
+
+ uint32_t opt_len;
+ uint32_t hdr_len;
+ uint32_t payload_len;
+ } tcp_info_t;
+
+ int decode_tcp(tcp_info_t *packet, const uint8_t *data, uint32_t len);
+ void dump_tcp_info(uint32_t pkt_id, tcp_info_t *packet);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif \ No newline at end of file
diff --git a/common/include/decode_udp.h b/common/include/decode_udp.h
new file mode 100644
index 0000000..7f8ba45
--- /dev/null
+++ b/common/include/decode_udp.h
@@ -0,0 +1,40 @@
+#ifndef _DECODE_UDP_H
+#define _DECODE_UDP_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
+
+#include "public.h"
+
+#define UDP_HEADER_LEN 8
+
+ typedef struct udp_header_s
+ {
+ uint16_t udp_src_port;
+ uint16_t udp_dst_port;
+ uint16_t udp_len;
+ uint16_t udp_sum;
+ } __attribute__((__packed__)) udp_header_t;
+
+ typedef struct udp_info_s
+ {
+ uint16_t src_port;
+ uint16_t dst_port;
+
+ udp_header_t *hdr;
+ uint8_t *payload;
+
+ uint32_t hdr_len;
+ uint32_t payload_len;
+ } udp_info_t;
+
+ int decode_udp(udp_info_t *packet, const uint8_t *data, uint32_t len);
+ void dump_udp_info(uint32_t pkt_id, udp_info_t *packet);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif \ No newline at end of file
diff --git a/common/include/public.h b/common/include/public.h
new file mode 100644
index 0000000..60f3048
--- /dev/null
+++ b/common/include/public.h
@@ -0,0 +1,41 @@
+#ifndef _PUBLIC_H
+#define _PUBLIC_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <arpa/inet.h>
+
+#define MIN(a, b) (((a) < (b)) ? (a) : (b))
+#define IP_GET_RAW_VER(raw_pkt) ((((raw_pkt)[0] & 0xf0) >> 4))
+
+#define PRINT_FILE_INFO 0
+
+#if (PRINT_FILE_INFO)
+#define LOG_DEBUG(format, ...) \
+ fprintf(stdout, "[%s-%s()-%05d] " format "\n", __FILE__, __FUNCTION__, __LINE__, ##__VA_ARGS__);
+
+#define LOG_ERROR(format, ...) \
+ fprintf(stderr, "[%s-%s()-%05d] " format "\n", __FILE__, __FUNCTION__, __LINE__, ##__VA_ARGS__);
+#else
+#define LOG_DEBUG(format, ...) \
+ fprintf(stdout, format "\n", ##__VA_ARGS__);
+
+#define LOG_ERROR(format, ...) \
+ fprintf(stderr, format "\n", ##__VA_ARGS__);
+#endif
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-30 19:23:33 +0000