reactos/apps/utils/net/arp/arp.c

   1 /*
   2  * arp - display ARP cache from the IP stack parameters.
   3  *
   4  * This source code is in the PUBLIC DOMAIN and has NO WARRANTY.
   5  *
   6  * Robert Dickenson <robd@reactos.org>, August 15, 2002.
   7  */
   8 #include <stdio.h>
   9 #include <windows.h>
  10 #include <tchar.h>
  11 #include <time.h>
  12
  13 #include <iptypes.h>
  14 #include <ipexport.h>
  15 #include <iphlpapi.h>
  16 #include <snmp.h>
  17
  18 #include "trace.h"
  19
  20
  21 VOID SNMP_FUNC_TYPE SnmpSvcInitUptime();
  22 DWORD SNMP_FUNC_TYPE SnmpSvcGetUptime();
  23
  24 ////////////////////////////////////////////////////////////////////////////////
  25
  26 const char szUsage[] = { "\n" \
  27     "Displays and modifies the IP Protocol to physical address translation tables\n" \
  28     "used by address resolution protocol (ARP).\n" \
  29     "\n" \
  30     "ARP -s inet_addr eth_addr [if_addr]\n" \
  31     "ARP -d inet_addr [if_addr]\n" \
  32     "ARP -a [inet_addr] [-N if_addr]\n" \
  33     "\n" \
  34     "  -a            Displays the active ARP table by querying the current protocol\n" \
  35     "                data. If inet_addr is specified, the IP and physical addresses\n" \
  36     "                for the specified address are displayed. If more than one\n" \
  37     "                network interface is using ARP, each interfaces ARP table is\n" \
  38     "                displayed.\n" \
  39     "  -g            Indentical to -a.\n" \
  40     "  inet_addr     Specifies the IP address.\n" \
  41     "  -N if_addr    Displays the ARP table for the specified interface only\n" \
  42     "  -d            Deletes the host entry specified by inet_addr. inet_addr may be\n" \
  43     "                wildcarded with * to delete all host entries in the ARP table.\n" \
  44     "  -s            Adds the host and associates the IP address inet_addr with the\n" \
  45     "                physical address eth_addr. The physical address must be specified\n" \
  46     "                as 6 hexadecimal characters delimited by hyphens. The new entry\n" \
  47     "                will become permanent in the ARP table.\n" \
  48     "  eth_addr      Specifies the interface physical address.\n" \
  49     "  if_addr       If present, this specifies the IP address of the interface whose\n" \
  50     "                address translation table should be modified. If not present, the\n" \
  51     "                first applicable interface will be used.\n" \
  52     "Example:\n" \
  53     "  > arp -s 192.168.0.12   55-AA-55-01-02-03   .... Static entry creation.\n" \
  54     "  > arp -a                                    .... ARP table display.\n" \
  55     "  > arp -d *                                  .... Delete all ARP table entries.\n"
  56 };
  57
  58 void usage(void)
  59 {
  60 //      fprintf(stderr,"USAGE:\n");
  61         fputs(szUsage, stderr);
  62 }
  63
  64 int main(int argc, char *argv[])
  65 {
  66     TCHAR szComputerName[50];
  67     DWORD dwSize = 50;
  68
  69     int nBytes = 500;
  70     BYTE* pCache;
  71
  72     if (argc > 1) {
  73         usage();
  74         return 1;
  75     }
  76
  77     SnmpSvcInitUptime();
  78
  79     GetComputerName(szComputerName, &dwSize);
  80     _tprintf(_T("ReactOS ARP cache on Computer Name: %s\n"), szComputerName);
  81
  82     pCache = (BYTE*)SnmpUtilMemAlloc(nBytes);
  83
  84         Sleep(2500);
  85
  86     if (pCache != NULL) {
  87
  88         DWORD dwUptime = SnmpSvcGetUptime();
  89
  90         _tprintf(_T("SNMP uptime: %ld\n"), dwUptime);
  91
  92         SnmpUtilMemFree(pCache);
  93     } else {
  94         _tprintf(_T("ERROR: call to SnmpUtilMemAlloc() failed\n"));
  95         return 1;
  96     }
  97         return 0;
  98 }
  99