Robert Mosher / Mbed OS door-access-controller-dev

An access controller for man doors at our facility. It receives Wiegand signals from a keypad/card reader and activates a relay to open the door. Access codes are stored in EEPROM. The active code list is updated from TFTP on a local server.

Dependencies:   24LCxx_I2C CardReader USBHOST

DHCPOptions.h@0:a56239ae90c2, 2017-09-25 (annotated)

Committer:
acesrobertm
Date:
Mon Sep 25 19:02:40 2017 +0000
Revision:
0:a56239ae90c2
in process of moving networking code to non-blocking format

Who changed what in which revision?

UserRevisionLine numberNew contents of line
acesrobertm 0:a56239ae90c2 1
acesrobertm 0:a56239ae90c2 2 #ifndef DHCPOPTIONS_H_
acesrobertm 0:a56239ae90c2 3 #define DHCPOPTIONS_H_
acesrobertm 0:a56239ae90c2 4
acesrobertm 0:a56239ae90c2 5 #include <cstdint>
acesrobertm 0:a56239ae90c2 6 #include "EthernetInterface.h"
acesrobertm 0:a56239ae90c2 7 #include "NetworkStack.h"
acesrobertm 0:a56239ae90c2 8 #include "UDPSocket.h"
acesrobertm 0:a56239ae90c2 9 #include <inet.h>
acesrobertm 0:a56239ae90c2 10
acesrobertm 0:a56239ae90c2 11 using std::uint8_t;
acesrobertm 0:a56239ae90c2 12 using std::uint16_t;
acesrobertm 0:a56239ae90c2 13 using std::uint32_t;
acesrobertm 0:a56239ae90c2 14
acesrobertm 0:a56239ae90c2 15 #define MAC_STRING_LENGTH 17
acesrobertm 0:a56239ae90c2 16 #define DHCP_BROADCAST_ADDRESS "255.255.255.255"
acesrobertm 0:a56239ae90c2 17 #define DHCP_SERVER_PORT 67
acesrobertm 0:a56239ae90c2 18 #define DHCP_CLIENT_PORT 68
acesrobertm 0:a56239ae90c2 19 #define DHCP_DEFAULT_TIMEOUT 1000
acesrobertm 0:a56239ae90c2 20 #define DHCP_PACKET_SIZE 576
acesrobertm 0:a56239ae90c2 21
acesrobertm 0:a56239ae90c2 22 #define DHCP_OP_REQUEST 1 // Request op
acesrobertm 0:a56239ae90c2 23 #define DHCP_HTYPE 1 // Ethernet
acesrobertm 0:a56239ae90c2 24 #define DHCP_HLEN 6 // MAC 6 octet
acesrobertm 0:a56239ae90c2 25 #define DHCP_HOPS 0
acesrobertm 0:a56239ae90c2 26 #define DHCP_SECS 0
acesrobertm 0:a56239ae90c2 27 #define DHCP_FLAGS 0
acesrobertm 0:a56239ae90c2 28 #define DHCP_CIADDR 0
acesrobertm 0:a56239ae90c2 29 #define DHCP_YIADDR 0
acesrobertm 0:a56239ae90c2 30 #define DHCP_SIADDR 0
acesrobertm 0:a56239ae90c2 31 #define DHCP_GIADDR 0
acesrobertm 0:a56239ae90c2 32 #define DHCP_MAGIC_COOKIE 0x63825363 // See, it is magic after all!
acesrobertm 0:a56239ae90c2 33 #define DHCP_PREQLIST 55
acesrobertm 0:a56239ae90c2 34 #define DHCP_OPTION_TFTPSERVER 66
acesrobertm 0:a56239ae90c2 35 #define DHCP_OPTION_STOP 255
acesrobertm 0:a56239ae90c2 36
acesrobertm 0:a56239ae90c2 37 #define DHCP_CHADDR_SIZE 16
acesrobertm 0:a56239ae90c2 38 #define DHCP_SNAME_SIZE 64
acesrobertm 0:a56239ae90c2 39 #define DHCP_FILE_SIZE 128
acesrobertm 0:a56239ae90c2 40 #define DHCP_OPTIONS_SIZE 312
acesrobertm 0:a56239ae90c2 41
acesrobertm 0:a56239ae90c2 42 class DHCPOptions
acesrobertm 0:a56239ae90c2 43 {
acesrobertm 0:a56239ae90c2 44 public:
acesrobertm 0:a56239ae90c2 45 DHCPOptions(EthernetInterface *stack) : m_eth(stack) {}
acesrobertm 0:a56239ae90c2 46
acesrobertm 0:a56239ae90c2 47 /* Get DHCP Options from the server. Blocks until completion. */
acesrobertm 0:a56239ae90c2 48 int getOptions(char* tftp_server, const char* mac_address, const uint32_t timeout = DHCP_DEFAULT_TIMEOUT); //Blocking
acesrobertm 0:a56239ae90c2 49
acesrobertm 0:a56239ae90c2 50 private:
acesrobertm 0:a56239ae90c2 51 EthernetInterface *m_eth;
acesrobertm 0:a56239ae90c2 52 UDPSocket m_sock;
acesrobertm 0:a56239ae90c2 53
acesrobertm 0:a56239ae90c2 54 struct DHCPPacket
acesrobertm 0:a56239ae90c2 55 {
acesrobertm 0:a56239ae90c2 56 uint8_t op;
acesrobertm 0:a56239ae90c2 57 uint8_t htype;
acesrobertm 0:a56239ae90c2 58 uint8_t hlen;
acesrobertm 0:a56239ae90c2 59 uint8_t hops;
acesrobertm 0:a56239ae90c2 60 uint32_t xid;
acesrobertm 0:a56239ae90c2 61 uint16_t secs;
acesrobertm 0:a56239ae90c2 62 uint16_t flags;
acesrobertm 0:a56239ae90c2 63 uint32_t ciaddr;
acesrobertm 0:a56239ae90c2 64 uint32_t yiaddr;
acesrobertm 0:a56239ae90c2 65 uint32_t siaddr;
acesrobertm 0:a56239ae90c2 66 uint32_t giaddr;
acesrobertm 0:a56239ae90c2 67 char chaddr[DHCP_CHADDR_SIZE];
acesrobertm 0:a56239ae90c2 68 char sname[DHCP_SNAME_SIZE];
acesrobertm 0:a56239ae90c2 69 char file[DHCP_FILE_SIZE];
acesrobertm 0:a56239ae90c2 70
acesrobertm 0:a56239ae90c2 71 //Options
acesrobertm 0:a56239ae90c2 72 uint32_t magic; // magic cookie
acesrobertm 0:a56239ae90c2 73 uint8_t op_mtype; // message type
acesrobertm 0:a56239ae90c2 74 uint8_t mtype_len;
acesrobertm 0:a56239ae90c2 75 uint8_t mtype;
acesrobertm 0:a56239ae90c2 76 char options[DHCP_OPTIONS_SIZE];
acesrobertm 0:a56239ae90c2 77
acesrobertm 0:a56239ae90c2 78 } __attribute__ ((packed));
acesrobertm 0:a56239ae90c2 79
acesrobertm 0:a56239ae90c2 80 int decodeOptions(char* tftp_server, DHCPPacket& pkt);
acesrobertm 0:a56239ae90c2 81 int macStrToBin(char* macBin, const char* macStr);
acesrobertm 0:a56239ae90c2 82 unsigned char charToNum(const char input);
acesrobertm 0:a56239ae90c2 83 };
acesrobertm 0:a56239ae90c2 84
acesrobertm 0:a56239ae90c2 85 #endif /* DHCPOPTIONS_H_ */
acesrobertm 0:a56239ae90c2 86