Add packet helpers

src/packet/packet_helpers.h

@@ -0,0 +1,68 @@
+#ifndef _PACKET_HELPERS_H
+#define _PACKET_HELPERS_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
+
+#include "packet.h"
+
+// packet
+uint64_t packet_get_zone_id(const struct packet *pkt);
+uint16_t packet_get_raw_len(const struct packet *pkt);
+const char *packet_get0_raw_data(const struct packet *pkt);
+
+bool paket_is_fragment(const struct packet *pkt);
+bool packet_has_tcp(const struct packet *pkt);
+bool packet_has_udp(const struct packet *pkt);
+
+// foreach layer
+uint8_t packet_get_layer_count(const struct packet *pkt);
+enum layer_type packet_get_layer_type(const struct packet *pkt, uint8_t index);
+const char *packet_get_layer_hdr_ptr(const struct packet *pkt, uint8_t index);
+const char *packet_get_layer_pld_ptr(const struct packet *pkt, uint8_t index);
+uint16_t packet_get_layer_hdr_len(const struct packet *pkt, uint8_t index);
+uint16_t packet_get_layer_pld_len(const struct packet *pkt, uint8_t index);
+
+// get tcp layer
+const struct layer_record *packet_get0_tcp_layer(const struct packet *pkt);
+const char *packet_get_tcp_hdr_ptr(const struct packet *pkt);
+const char *packet_get_tcp_pld_ptr(const struct packet *pkt);
+uint16_t packet_get_tcp_hdr_len(const struct packet *pkt);
+uint16_t packet_get_tcp_pld_len(const struct packet *pkt);
+uint16_t packet_get_tcp_sport(const struct packet *pkt);
+uint16_t packet_get_tcp_dport(const struct packet *pkt);
+uint32_t packet_get_tcp_seq(const struct packet *pkt);
+uint32_t packet_get_tcp_ack(const struct packet *pkt);
+uint8_t packet_get_tcp_flags(const struct packet *pkt);
+bool packet_has_tcp_flag_urg(const struct packet *pkt);
+bool packet_has_tcp_flag_ack(const struct packet *pkt);
+bool packet_has_tcp_flag_psh(const struct packet *pkt);
+bool packet_has_tcp_flag_rst(const struct packet *pkt);
+bool packet_has_tcp_flag_syn(const struct packet *pkt);
+bool packet_has_tcp_flag_fin(const struct packet *pkt);
+
+// get inner udp layer
+const struct layer_record *packet_get0_inner_udp_layer(const struct packet *pkt);
+const char *packet_get_inner_udp_hdr_ptr(const struct packet *pkt);
+const char *packet_get_inner_udp_pld_ptr(const struct packet *pkt);
+uint16_t packet_get_inner_udp_hdr_len(const struct packet *pkt);
+uint16_t packet_get_inner_udp_pld_len(const struct packet *pkt);
+uint16_t packet_get_inner_udp_sport(const struct packet *pkt);
+uint16_t packet_get_inner_udp_dport(const struct packet *pkt);
+
+// get outer udp layer
+const struct layer_record *packet_get0_outer_udp_layer(const struct packet *pkt);
+const char *packet_get_outer_udp_hdr_ptr(const struct packet *pkt);
+const char *packet_get_outer_udp_pld_ptr(const struct packet *pkt);
+uint16_t packet_get_outer_udp_hdr_len(const struct packet *pkt);
+uint16_t packet_get_outer_udp_pld_len(const struct packet *pkt);
+uint16_t packet_get_outer_udp_sport(const struct packet *pkt);
+uint16_t packet_get_outer_udp_dport(const struct packet *pkt);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif