Diff: udp/dhcp/dhcphdr.c

Revision:

136:8a65abb0dc63

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/udp/dhcp/dhcphdr.c	Sat Apr 06 11:20:20 2019 +0000
@@ -0,0 +1,45 @@
+#include <stdint.h>
+
+#include "net.h"
+
+char* DhcpHdrPtrOp    (char* pPacket) { return pPacket +   0; } //1
+char* DhcpHdrPtrHtype (char* pPacket) { return pPacket +   1; } //1
+char* DhcpHdrPtrHlen  (char* pPacket) { return pPacket +   2; } //1
+char* DhcpHdrPtrHops  (char* pPacket) { return pPacket +   3; } //1
+char* DhcpHdrPtrXid   (char* pPacket) { return pPacket +   4; } //4
+char* DhcpHdrPtrSecs  (char* pPacket) { return pPacket +   8; } //2
+char* DhcpHdrPtrFlags (char* pPacket) { return pPacket +  10; } //2
+char* DhcpHdrPtrCiaddr(char* pPacket) { return pPacket +  12; } //4
+char* DhcpHdrPtrYiaddr(char* pPacket) { return pPacket +  16; } //4
+char* DhcpHdrPtrSiaddr(char* pPacket) { return pPacket +  20; } //4
+char* DhcpHdrPtrGiaddr(char* pPacket) { return pPacket +  24; } //4
+char* DhcpHdrPtrChaddr(char* pPacket) { return pPacket +  28; } //16
+char* DhcpHdrPtrLegacy(char* pPacket) { return pPacket +  44; } //192
+char* DhcpHdrPtrCookie(char* pPacket) { return pPacket + 236; } //4
+const int DHCP_HEADER_LENGTH = 240;
+
+uint8_t  DhcpHdrGetOp    (char* pPacket) { return                     *DhcpHdrPtrOp    (pPacket);            }
+uint8_t  DhcpHdrGetHtype (char* pPacket) { return                     *DhcpHdrPtrHtype (pPacket);            }
+uint8_t  DhcpHdrGetHlen  (char* pPacket) { return                     *DhcpHdrPtrHlen  (pPacket);            }
+uint8_t  DhcpHdrGetHops  (char* pPacket) { return                     *DhcpHdrPtrHops  (pPacket);            }
+uint32_t DhcpHdrGetXid   (char* pPacket) { uint32_t r; NetInvert32(&r, DhcpHdrPtrXid   (pPacket)); return r; }
+uint16_t DhcpHdrGetSecs  (char* pPacket) { uint16_t r; NetInvert16(&r, DhcpHdrPtrSecs  (pPacket)); return r; }
+uint16_t DhcpHdrGetFlags (char* pPacket) { uint16_t r; NetInvert16(&r, DhcpHdrPtrFlags (pPacket)); return r; }
+uint32_t DhcpHdrGetCiaddr(char* pPacket) { uint32_t r; NetDirect32(&r, DhcpHdrPtrCiaddr(pPacket)); return r; }
+uint32_t DhcpHdrGetYiaddr(char* pPacket) { uint32_t r; NetDirect32(&r, DhcpHdrPtrYiaddr(pPacket)); return r; }
+uint32_t DhcpHdrGetSiaddr(char* pPacket) { uint32_t r; NetDirect32(&r, DhcpHdrPtrSiaddr(pPacket)); return r; }
+uint32_t DhcpHdrGetGiaddr(char* pPacket) { uint32_t r; NetDirect32(&r, DhcpHdrPtrGiaddr(pPacket)); return r; }
+uint32_t DhcpHdrGetCookie(char* pPacket) { uint32_t r; NetInvert32(&r, DhcpHdrPtrCookie(pPacket)); return r; }
+
+void DhcpHdrSetOp    (char* pPacket, uint8_t  value) {            *DhcpHdrPtrOp       (pPacket) = value;  }
+void DhcpHdrSetHtype (char* pPacket, uint8_t  value) {            *DhcpHdrPtrHtype    (pPacket) = value;  }
+void DhcpHdrSetHlen  (char* pPacket, uint8_t  value) {            *DhcpHdrPtrHlen     (pPacket) = value;  }
+void DhcpHdrSetHops  (char* pPacket, uint8_t  value) {            *DhcpHdrPtrHops     (pPacket) = value;  }
+void DhcpHdrSetXid   (char* pPacket, uint32_t value) { NetInvert32(DhcpHdrPtrXid      (pPacket), &value); }
+void DhcpHdrSetSecs  (char* pPacket, uint16_t value) { NetInvert16(DhcpHdrPtrSecs     (pPacket), &value); }
+void DhcpHdrSetFlags (char* pPacket, uint16_t value) { NetInvert16(DhcpHdrPtrFlags    (pPacket), &value); }
+void DhcpHdrSetCiaddr(char* pPacket, uint32_t value) { NetDirect32(DhcpHdrPtrCiaddr   (pPacket), &value); }
+void DhcpHdrSetYiaddr(char* pPacket, uint32_t value) { NetDirect32(DhcpHdrPtrYiaddr   (pPacket), &value); }
+void DhcpHdrSetSiaddr(char* pPacket, uint32_t value) { NetDirect32(DhcpHdrPtrSiaddr   (pPacket), &value); }
+void DhcpHdrSetGiaddr(char* pPacket, uint32_t value) { NetDirect32(DhcpHdrPtrGiaddr   (pPacket), &value); }
+void DhcpHdrSetCookie(char* pPacket, uint32_t value) { NetInvert32(DhcpHdrPtrCookie   (pPacket), &value); }