2013-11-15 22:52:48 +00:00
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#include "config.h"
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#include "mac_address.h"
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#include <string.h>
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#if defined(_WIN32)
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#include <windows.h>
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#include <Iphlpapi.h>
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#elif defined(__APPLE__)
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#include <cstdio>
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#include <unistd.h>
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#include <fcntl.h>
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#include <cerrno>
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#include <paths.h>
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#include <sysexits.h>
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#include <sys/param.h>
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#else // used to be if defined(__linux__)
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#include <cstdio>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_FCNTL_H
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#include <sys/fcntl.h>
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#endif
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#ifdef HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#endif
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#ifdef HAVE_SYS_SOCKIO_H
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#include <sys/sockio.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_NET_IF_H
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#include <net/if.h>
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#endif
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#ifdef HAVE_NET_ARP_H
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#include <net/arp.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_NETINET_IF_ETHER_H
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#include <netinet/if_ether.h>
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#endif
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#ifdef HAVE_NETINET_ETHER_H
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#include <netinet/ether.h>
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#endif
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#include "unix_util.h"
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#endif
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using std::perror;
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#if defined(__APPLE__)
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#include <CoreFoundation/CoreFoundation.h>
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#include <IOKit/IOKitLib.h>
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#include <IOKit/network/IOEthernetInterface.h>
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#include <IOKit/network/IOEthernetController.h>
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// Returns an iterator across all known Ethernet interfaces. Caller is responsible for
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// releasing the iterator when iteration is complete.
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static kern_return_t
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FindEthernetInterfaces(io_iterator_t *matchingServices)
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{
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kern_return_t kernResult;
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mach_port_t masterPort;
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CFMutableDictionaryRef classesToMatch;
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kernResult = IOMasterPort(MACH_PORT_NULL, &masterPort);
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if (KERN_SUCCESS != kernResult) fprintf(stderr, "IOMasterPort returned %d\n", kernResult);
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// Ethernet interfaces are instances of class kIOEthernetInterfaceClass
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classesToMatch = IOServiceMatching(kIOEthernetInterfaceClass);
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// Note that another option here would be: classesToMatch = IOBSDMatching("enX");
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// where X is a number from 0 to the number of Ethernet interfaces on the system - 1.
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if (classesToMatch == NULL) fprintf(stderr, "IOServiceMatching returned a NULL dictionary.\n");
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kernResult = IOServiceGetMatchingServices(masterPort, classesToMatch, matchingServices);
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if (KERN_SUCCESS != kernResult) fprintf(stderr, "IOServiceGetMatchingServices returned %d\n", kernResult);
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return kernResult;
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}
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// Given an iterator across a set of Ethernet interfaces, return the MAC address of the first one.
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// If no interfaces are found the MAC address is set to an empty string.
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static kern_return_t
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GetMACAddress(io_iterator_t intfIterator, char* buffer)
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{
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io_object_t intfService;
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io_object_t controllerService;
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kern_return_t kernResult = KERN_FAILURE;
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char delimiter[2] = "\0";
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while (intfService = IOIteratorNext(intfIterator))
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{
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CFTypeRef MACAddressAsCFData;
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// IONetworkControllers can't be found directly by the IOServiceGetMatchingServices call,
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// matching mechanism. So we've found the IONetworkInterface and will get its parent controller
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// by asking for it specifically.
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kernResult = IORegistryEntryGetParentEntry( intfService, kIOServicePlane, &controllerService );
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if (KERN_SUCCESS != kernResult) fprintf(stderr, "IORegistryEntryGetParentEntry returned 0x%08x\n", kernResult);
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else {
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MACAddressAsCFData = IORegistryEntryCreateCFProperty( controllerService, CFSTR(kIOMACAddress), kCFAllocatorDefault, 0);
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if (MACAddressAsCFData)
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{
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const __CFData* refData = (const __CFData*)MACAddressAsCFData;
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UInt8 MACAddress[ kIOEthernetAddressSize ];
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CFDataGetBytes(refData, CFRangeMake(0,CFDataGetLength(refData)), MACAddress);
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sprintf(buffer, "%s%s%02x:%02x:%02x:%02x:%02x:%02x",
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buffer, delimiter,
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MACAddress[0], MACAddress[1], MACAddress[2], MACAddress[3], MACAddress[4], MACAddress[5]);
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CFRelease(MACAddressAsCFData);
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delimiter[0] = ':';
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delimiter[1] = '\0';
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}
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(void) IOObjectRelease(controllerService);
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}
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// We have sucked this service dry of information so release it now.
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(void) IOObjectRelease(intfService);
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// We're just interested in the first interface so exit the loop.
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//break;
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}
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return kernResult;
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}
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#endif
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2013-11-18 18:20:46 +00:00
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int get_mac_address(char* address) {
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2013-11-15 22:52:48 +00:00
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#if defined(_WIN32)
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IP_ADAPTER_INFO AdapterInfo[16]; // Allocate information for up to 16 NICs
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DWORD dwBufLen = sizeof(AdapterInfo); // Save memory size of buffer
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// Call GetAdapterInfo
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DWORD dwStatus = GetAdaptersInfo(AdapterInfo, &dwBufLen);
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2013-11-18 18:20:46 +00:00
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if(dwStatus != ERROR_SUCCESS) {
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return -1;
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2013-11-15 22:52:48 +00:00
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}
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2013-11-18 18:20:46 +00:00
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strcpy(address, "");
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PIP_ADAPTER_INFO pAdapterInfo = AdapterInfo; // Contains pointer to current adapter info
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while (pAdapterInfo) {
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sprintf(address, "%02x:%02x:%02x:%02x:%02x:%02x",
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pAdapterInfo->Address[0], pAdapterInfo->Address[1], pAdapterInfo->Address[2],
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pAdapterInfo->Address[3], pAdapterInfo->Address[4], pAdapterInfo->Address[5]
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);
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if (pAdapterInfo->Type == MIB_IF_TYPE_ETHERNET) break;
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pAdapterInfo = pAdapterInfo->Next;
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2013-11-15 22:52:48 +00:00
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}
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2013-11-18 18:20:46 +00:00
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return 0;
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2013-11-15 22:52:48 +00:00
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#elif defined(__APPLE__)
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kern_return_t kernResult = KERN_SUCCESS; // on PowerPC this is an int (4 bytes)
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/*
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* error number layout as follows (see mach/error.h and IOKitLib/IOReturn.h):
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*
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* hi lo
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* | system(6) | subsystem(12) | code(14) |
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*/
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io_iterator_t intfIterator;
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2013-11-18 18:20:46 +00:00
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int retval = 0;
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2013-11-15 22:52:48 +00:00
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kernResult = FindEthernetInterfaces(&intfIterator);
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2013-11-18 18:20:46 +00:00
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if (KERN_SUCCESS != kernResult) {
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fprintf(stderr, "FindEthernetInterfaces returned 0x%08x\n", kernResult);
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retval = -1;
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} else {
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kernResult = GetMACAddress(intfIterator, address);
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if (KERN_SUCCESS != kernResult) {
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fprintf(stderr, "GetMACAddress returned 0x%08x\n", kernResult);
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retval = -1;
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}
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2013-11-15 22:52:48 +00:00
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}
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IOObjectRelease(intfIterator);
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2013-11-18 18:20:46 +00:00
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return retval;
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2013-11-15 22:52:48 +00:00
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#elif defined(SIOCGIFCONF) || defined(SIOCGLIFCONF)
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char buf[1024];
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#ifdef HAVE_STRUCT_LIFCONF
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struct lifconf ifc;
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struct lifreq *ifr;
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#else
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struct ifconf ifc;
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struct ifreq *ifr;
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#endif
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int sck;
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int nInterfaces;
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int i;
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/* Get a socket handle. */
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sck = socket(AF_INET, SOCK_DGRAM, 0);
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if(sck < 0)
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{
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perror("socket");
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return false;
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}
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/* Query available interfaces. */
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#ifdef HAVE_STRUCT_LIFCONF
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ifc.lifc_len = sizeof(buf);
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ifc.lifc_buf = buf;
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if(ioctl(sck, SIOCGLIFCONF, &ifc) < 0)
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{
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perror("ioctl(SIOCGLIFCONF)");
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return false;
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}
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#else
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ifc.ifc_len = sizeof(buf);
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ifc.ifc_buf = buf;
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if(ioctl(sck, SIOCGIFCONF, &ifc) < 0)
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{
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perror("ioctl(SIOCGIFCONF)");
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return false;
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}
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#endif
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#ifdef HAVE_STRUCT_LIFCONF
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/* Iterate through the list of interfaces. */
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ifr = ifc.lifc_req;
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nInterfaces = ifc.lifc_len / sizeof(struct lifreq);
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#else
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ifr = ifc.ifc_req;
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nInterfaces = ifc.ifc_len / sizeof(struct ifreq);
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#endif
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strcpy(addresses, "");
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char delimiter[2] = "\0";
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for(i = 0; i < nInterfaces; i++)
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{
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#ifdef HAVE_STRUCT_LIFCONF
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struct lifreq *item = &ifr[i];
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#else
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struct ifreq *item = &ifr[i];
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#endif
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struct ether_addr *hw_addr;
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/* Get the MAC address */
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#ifdef SIOCGIFHWADDR
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if(ioctl(sck, SIOCGIFHWADDR, item) < 0)
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{
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perror("ioctl(SIOCGIFHWADDR)");
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return false;
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}
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hw_addr=(struct ether_addr *)(item->ifr_hwaddr.sa_data);
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#elif defined(SIOCGIFARP)
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if(ioctl(sck, SIOCGIFARP, item) < 0)
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{
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perror("ioctl(SIOCGIFARP)");
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return false;
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}
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hw_addr=(struct ether_addr *)&(item->lifr_lifru.lifru_enaddr);
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#endif
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strcat(addresses, delimiter);
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delimiter[0] = ':';
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delimiter[1] = '\0';
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strcat(addresses, ether_ntoa(hw_addr));
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}
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return true;
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#else
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#warning Don`t know how to obtain mac address. get_mac_addresses() will return false.
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return false;
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#endif
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}
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