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Annotation of embedaddon/dhcdrop/src/net_functions.h, revision 1.1

1.1     ! misho       1: /*
        !             2:  * net_functions.h
        !             3:  *
        !             4:  *  Created on: 30.07.2009
        !             5:  *      Author: Chebotarev Roman
        !             6:  */
        !             7: 
        !             8: #ifndef NET_FUNCTIONS_H_
        !             9: #define NET_FUNCTIONS_H_
        !            10: 
        !            11: #include "net.h"
        !            12: 
        !            13: enum packet_types
        !            14: {
        !            15:        dhcp_packet,
        !            16:        arp_packet
        !            17: };
        !            18: 
        !            19: /* Return pcap network device if success. Otherwise - exit from programm. */
        !            20: pcap_t * get_device(const struct config_params * params);
        !            21: 
        !            22: /* Calculate CRC for data in 'buffer'. Return checksumm. */
        !            23: uint16_t rs_crc(const unsigned short *buffer, int length);
        !            24: 
        !            25: /* Create ARP header */
        !            26: void assemble_net_header_arp(struct arp_packet_net_header * net_header,
        !            27:                const uint8_t * ether_src,
        !            28:                uint16_t op_code);
        !            29: 
        !            30: /* Create network header - ethernet + IP + UDP. Store in 'header'. */
        !            31: void assemble_net_header_dhcp
        !            32:     (
        !            33:         struct dhcp_packet_net_header * header,                /* Can't be NULL */
        !            34:                const int data_len,                                             /* Length of UDP data */
        !            35:         const struct config_params * params,   /* Can't be NULL */
        !            36:         const uint8_t * ether_src,                             /* Source ethernet address. Binary format. Can't be NULL */
        !            37:         const uint32_t dst_ip,                                 /* If zero - using broadcast. */
        !            38:         const uint32_t src_ip
        !            39:         );
        !            40: 
        !            41: /* Send packet to network. 'data_len' - only UDP data, exclude network headers */
        !            42: int send_packet(pcap_t* descr,                         /* Can't be NULL */
        !            43:                enum packet_types packet_type,  /* Type of sended packet. Se 'enum packet_types' in dhcdrop_types.h */
        !            44:                const uint8_t *snd_data,                /* UDP payload. Can't be NULL */
        !            45:                const int data_len,                             /* Payload data length */
        !            46:                const struct config_params * params,    /* May be NULL */
        !            47:                const uint8_t * ether_src,      /* Source ethernet address. Can't be NULL */
        !            48:                const uint32_t dst_ip);
        !            49: 
        !            50: #ifdef  _WIN32
        !            51: void CALLBACK timeout(UINT uTimerID, UINT uMsg, DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2);
        !            52: #else
        !            53: void timeout(int signal);
        !            54: #endif
        !            55: 
        !            56: #endif /* NET_FUNCTIONS_H_ */