56 lines
1.3 KiB
C++
56 lines
1.3 KiB
C++
// DHCPClient.h 2013/4/10
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#ifndef DHCPCLIENT_H
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#define DHCPCLIENT_H
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#include "wiznet.h"
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#include "UDPSocket.h"
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#define DHCP_OFFSET_OP 0
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#define DHCP_OFFSET_XID 4
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#define DHCP_OFFSET_YIADDR 16
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#define DHCP_OFFSET_SIADDR 20
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#define DHCP_OFFSET_OPTIONS 240
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#define DHCP_MAX_PACKET_SIZE 600
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// DHCP Message Type
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#define DHCPDISCOVER 1
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#define DHCPOFFER 2
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#define DHCPREQUEST 3
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#define DHCPDECLINE 4
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#define DHCPACK 5
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#define DHCPNAK 6
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#define DHCPRELEASE 7
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#define DHCPINFORM 8
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class DHCPClient {
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public:
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DHCPClient();
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int setup(int timeout_ms = 15*1000);
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uint8_t chaddr[6]; // MAC
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uint8_t yiaddr[4]; // IP
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uint8_t dnsaddr[4]; // DNS
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uint8_t gateway[4];
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uint8_t netmask[4];
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uint8_t siaddr[4];
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private:
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int discover();
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int request();
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int offer(uint8_t buf[], int size);
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void add_buf(uint8_t* buf, int len);
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void fill_buf(int len, uint8_t data = 0x00);
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void add_buf(uint8_t c);
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void add_option(uint8_t code, uint8_t* buf = NULL, int len = 0);
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bool verify(uint8_t buf[], int len);
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void callback();
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UDPSocket* m_udp;
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Endpoint m_server;
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uint8_t xid[4];
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bool exit_flag;
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Timer m_interval;
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int m_retry;
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uint8_t m_buf[DHCP_MAX_PACKET_SIZE];
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int m_pos;
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WIZnet_Chip* eth;
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};
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#endif //DHCPCLIENT_H
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