diff options
Diffstat (limited to 'mysys/my_gethwaddr.c')
| -rw-r--r-- | mysys/my_gethwaddr.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/mysys/my_gethwaddr.c b/mysys/my_gethwaddr.c new file mode 100644 index 00000000..70e1d549 --- /dev/null +++ b/mysys/my_gethwaddr.c @@ -0,0 +1,198 @@ +/* + Copyright (c) 2004, 2010, Oracle and/or its affiliates + Copyright (c) 2011, Monty Program Ab + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ + +/* get hardware address for an interface */ +/* if there are many available, any non-zero one can be used */ + +#include "mysys_priv.h" +#include <m_string.h> + +#ifndef MAIN + +static my_bool memcpy_and_test(uchar *to, uchar *from, uint len) +{ + uint i, res= 1; + + for (i= 0; i < len; i++) + if ((*to++= *from++)) + res= 0; + return res; +} + +#if defined(__APPLE__) || defined(__FreeBSD__) +#include <net/ethernet.h> +#include <sys/sysctl.h> +#include <net/route.h> +#include <net/if.h> +#include <net/if_dl.h> + +my_bool my_gethwaddr(uchar *to) +{ + size_t len; + uchar *buf, *next, *end, *addr; + struct if_msghdr *ifm; + struct sockaddr_dl *sdl; + int res= 1, mib[6]= {CTL_NET, AF_ROUTE, 0, AF_LINK, NET_RT_IFLIST, 0}; + + if (sysctl(mib, 6, NULL, &len, NULL, 0) == -1) + goto err; + if (!(buf = alloca(len))) + goto err; + if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) + goto err; + + end = buf + len; + + for (next = buf ; res && next < end ; next += ifm->ifm_msglen) + { + ifm = (struct if_msghdr *)next; + if (ifm->ifm_type == RTM_IFINFO) + { + sdl = (struct sockaddr_dl *)(ifm + 1); + addr= (uchar *)LLADDR(sdl); + res= memcpy_and_test(to, addr, ETHER_ADDR_LEN); + } + } + +err: + return res; +} + +#elif defined(__linux__) || defined(__sun) +#include <net/if.h> +#include <sys/ioctl.h> +#include <net/if_arp.h> +#ifdef HAVE_SYS_SOCKIO_H +#include <sys/sockio.h> +#endif + +#define ETHER_ADDR_LEN 6 + +my_bool my_gethwaddr(uchar *to) +{ + int fd, res= 1; + struct ifreq ifr[32]; + struct ifconf ifc; + DBUG_ENTER("my_gethwaddr"); + + ifc.ifc_req= ifr; + ifc.ifc_len= sizeof(ifr); + + fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd < 0) + { + DBUG_PRINT("error", ("socket() call failed with %d", errno)); + goto err; + } + + if (ioctl(fd, SIOCGIFCONF, (char*)&ifc) >= 0) + { + uint i; + for (i= 0; res && i < ifc.ifc_len / sizeof(ifr[0]); i++) + { +#ifdef __linux__ + if (ioctl(fd, SIOCGIFHWADDR, &ifr[i]) >= 0) + res= memcpy_and_test(to, (uchar *)&ifr[i].ifr_hwaddr.sa_data, + ETHER_ADDR_LEN); +#else + /* + A bug in OpenSolaris used to prevent non-root from getting a mac + address: {no url. Oracle killed the old OpenSolaris bug database} + + Thus, we'll use an alternative method and extract the address from the + arp table. + */ + struct arpreq arpr; + arpr.arp_pa= ifr[i].ifr_addr; + + if (ioctl(fd, SIOCGARP, (char*)&arpr) >= 0) + res= memcpy_and_test(to, (uchar *)&arpr.arp_ha.sa_data, + ETHER_ADDR_LEN); +#endif + } + } + + close(fd); +err: + DBUG_RETURN(res); +} + +#elif defined(_WIN32) +#include <winsock2.h> +#include <iphlpapi.h> +#pragma comment(lib, "iphlpapi.lib") + +#define ETHER_ADDR_LEN 6 + +my_bool my_gethwaddr(uchar *to) +{ + my_bool res= 1; + + IP_ADAPTER_INFO *info= NULL; + ULONG info_len= 0; + + if (GetAdaptersInfo(info, &info_len) != ERROR_BUFFER_OVERFLOW) + goto err; + + info= (IP_ADAPTER_INFO *)alloca(info_len); + + if (GetAdaptersInfo(info, &info_len) != NO_ERROR) + goto err; + + while (info && res) + { + if (info->Type == MIB_IF_TYPE_ETHERNET && + info->AddressLength == ETHER_ADDR_LEN) + { + res= memcpy_and_test(to, info->Address, ETHER_ADDR_LEN); + } + info = info->Next; + } + +err: + return res; +} + +#else /* unsupported system */ +/* just fail */ +my_bool my_gethwaddr(uchar *to __attribute__((unused))) +{ + return 1; +} +#endif + +#else /* MAIN */ +int main(int argc __attribute__((unused)),char **argv) +{ + uchar mac[6]; + uint i; + MY_INIT(argv[0]); + if (my_gethwaddr(mac)) + { + printf("my_gethwaddr failed with errno %d\n", errno); + exit(1); + } + for (i= 0; i < sizeof(mac); i++) + { + if (i) printf(":"); + printf("%02x", mac[i]); + } + printf("\n"); + return 0; +} +#endif + |