[4] | 1 | /**
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| 2 | * @file macaddr.cpp
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| 3 | * @author https://kldp.org/node/26319
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| 4 | * @brief getting mac address
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| 5 | */
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| 6 | #include <stdio.h>
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| 7 | #include <fcntl.h>
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| 8 | #include <stdlib.h>
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| 9 | #include <string.h>
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| 10 | #include <errno.h>
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| 11 | #include <sys/types.h>
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| 12 |
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| 13 | #ifndef WIN32
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| 14 | #include <unistd.h>
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| 15 | #include <sys/poll.h>
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| 16 |
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| 17 | #ifndef _LINUX
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| 18 | #include <sys/dlpi.h>
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| 19 | #include <sys/stropts.h>
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| 20 | #else
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| 21 | #ifdef _HAVE_STROPTS_H
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| 22 | #include <sys/stropts.h>
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| 23 | #endif
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| 24 | #endif
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| 25 |
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| 26 | #else
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| 27 | # pragma comment(lib, "iphlpapi.lib")
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| 28 | #include <windows.h>
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| 29 | #include <lm.h>
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| 30 | #include <Lmwksta.h>
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| 31 | #include <assert.h>
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| 32 | #include <iphlpapi.h>
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| 33 | #endif
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| 34 |
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| 35 | #include <signal.h>
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| 36 | #include <ctype.h>
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| 37 |
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| 38 | #ifdef _LINUX
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| 39 | #include <sys/ioctl.h>
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| 40 | #include <sys/types.h>
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| 41 | #include <sys/socket.h>
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| 42 | #include <netinet/in.h>
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| 43 | #include <linux/if.h>
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| 44 | #endif
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| 45 |
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| 46 | #ifdef _HPUX
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| 47 | #include <netio.h>
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| 48 | #include <sys/ioctl.h>
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| 49 | #endif
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| 50 |
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| 51 | #ifdef _AIX
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| 52 | #include <sys/ndd_var.h>
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| 53 | #include <sys/kinfo.h>
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| 54 |
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| 55 | /* in C++, 'getkerninfo()' function is not declared automatically. */
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| 56 | extern "C" int getkerninfo (int, char *, int *, int32long64_t);
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| 57 | #endif
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| 58 |
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| 59 | #ifdef _SOLARIS
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| 60 | #define BSD_COMP
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| 61 | #include <sys/types.h>
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| 62 | #include <sys/ioctl.h>
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| 63 | #include <sys/socket.h>
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| 64 | #include <sys/utsname.h>
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| 65 | #include <netinet/in.h>
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| 66 | #include <netdb.h>
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| 67 | #include <net/if_arp.h>
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| 68 | #include <net/if.h>
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| 69 | #include <net/if_dl.h>
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| 70 | #include <net/if_types.h>
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| 71 | #include <arpa/inet.h>
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| 72 | #include <stropts.h>
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| 73 | #endif
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| 74 |
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| 75 | #ifndef WIN32
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| 76 |
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| 77 | #undef DLPI_DEV
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| 78 |
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| 79 | #ifdef HPUX
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| 80 | static const char *dlpi_dev[] = {"/dev/dlpi", ""};
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| 81 | #define DLPI_DEV
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| 82 | #endif
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| 83 |
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| 84 | #ifdef AIX
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| 85 | static const char *dlpi_dev[] = {"/dev/dlpi/et", "/dev/dlpi/en",
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| 86 | "/dev/dlpi/tr", "/dev/dlpi/fddi", ""};
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| 87 | #define DLPI_DEV
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| 88 | /* AIX: remember to set up /etc/pse.conf or /etc/dlpi.conf */
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| 89 | #endif
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| 90 |
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| 91 | #ifdef SunOS
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| 92 | static const char *dlpi_dev[] = {"/dev/hme", "/dev/ie", "/dev/le", "/dev/eri"};
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| 93 | #define DLPI_DEV
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| 94 | #endif
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| 95 |
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| 96 | #if !defined(DLPI_DEV) && !defined(_LINUX)
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| 97 | static const char *dlpi_dev[] = {"/dev/dlpi", ""};
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| 98 | /* unknown OS - hope that this will work ??? */
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| 99 | #define DLPI_DEV
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| 100 | #endif
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| 101 |
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| 102 | /**********************************************************************/
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| 103 | /*
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| 104 | * implementation
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| 105 | */
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| 106 |
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| 107 | #define INSAP 22
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| 108 | #define OUTSAP 24
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| 109 |
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| 110 | #include <sys/types.h>
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| 111 | #include <fcntl.h>
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| 112 | #include <errno.h>
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| 113 | #include <stdio.h>
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| 114 | #include <string.h>
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| 115 | #include <signal.h>
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| 116 | #include <ctype.h>
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| 117 |
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| 118 | #define bcopy(source, destination, length) memcpy(destination, source, length)
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| 119 |
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| 120 | #define AREA_SZ 5000 /*=* buffer length in bytes *=*/
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| 121 | #define GOT_CTRL 1
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| 122 | #define GOT_DATA 2
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| 123 | #define GOT_BOTH 3
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| 124 | #define GOT_INTR 4
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| 125 | #define GOT_ERR 128
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| 126 |
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| 127 | #ifndef _LINUX
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| 128 | static u_long ctl_area[AREA_SZ];
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| 129 | static u_long dat_area[AREA_SZ];
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| 130 | static struct strbuf ctl = {AREA_SZ, 0, (char *)ctl_area};
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| 131 | static struct strbuf dat = {AREA_SZ, 0, (char *)dat_area};
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| 132 |
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| 133 | /*=* get a message from a stream; return type of message *=*/
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| 134 | static int GetMsg (int fd)
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| 135 | {
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| 136 | int flags = 0;
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| 137 | int res, ret;
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| 138 | ctl_area[0] = 0;
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| 139 | dat_area[0] = 0;
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| 140 | ret = 0;
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| 141 | res = getmsg(fd, &ctl, &dat, &flags);
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| 142 | if(res < 0) {
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| 143 | if(errno == EINTR) {
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| 144 | return(GOT_INTR);
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| 145 | } else {
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| 146 | return(GOT_ERR);
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| 147 | }
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| 148 | }
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| 149 | if(ctl.len > 0) {
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| 150 | ret |= GOT_CTRL;
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| 151 | }
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| 152 | if(dat.len > 0) {
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| 153 | ret |= GOT_DATA;
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| 154 | } return(ret);
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| 155 | }
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| 156 |
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| 157 | /*=* verify that dl_primitive in ctl_area = prim *=*/
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| 158 | static int CheckCtrl (unsigned int prim)
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| 159 | {
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| 160 | dl_error_ack_t *err_ack = (dl_error_ack_t *)ctl_area;
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| 161 | if(err_ack->dl_primitive != prim) {
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| 162 | return GOT_ERR;
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| 163 | } return 0;
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| 164 | }
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| 165 |
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| 166 | /*=* put a control message on a stream *=*/
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| 167 | static int PutCtrl (int fd, int len, int pri)
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| 168 | {
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| 169 | ctl.len = len;
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| 170 | if(putmsg(fd, &ctl, 0, pri) < 0) {
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| 171 | return GOT_ERR;
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| 172 | } return 0;
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| 173 | }
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| 174 |
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| 175 | /*=* put a control + data message on a stream *=*/
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| 176 | static int PutBoth (int fd, int clen, int dlen, int pri)
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| 177 | {
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| 178 | ctl.len = clen;
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| 179 | dat.len = dlen;
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| 180 | if(putmsg(fd, &ctl, &dat, pri) < 0) {
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| 181 | return GOT_ERR;
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| 182 | } return 0;
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| 183 | }
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| 184 |
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| 185 | /*=* open file descriptor and attach *=*/
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| 186 | static int OpenDL (const char *dev, int ppa, int *fd)
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| 187 | {
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| 188 | dl_attach_req_t *attach_req = (dl_attach_req_t *)ctl_area;
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| 189 | if((*fd = open(dev, O_RDWR)) == -1) {
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| 190 | return GOT_ERR;
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| 191 | }
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| 192 | attach_req->dl_primitive = DL_ATTACH_REQ;
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| 193 | attach_req->dl_ppa = ppa;
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| 194 | PutCtrl (*fd, sizeof(dl_attach_req_t), 0);
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| 195 | GetMsg (*fd);
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| 196 | return CheckCtrl (DL_OK_ACK);
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| 197 | }
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| 198 |
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| 199 | /*=* send DL_BIND_REQ *=*/
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| 200 | static int BindDL (int fd, int sap, u_char *addr)
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| 201 | {
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| 202 | dl_bind_req_t *bind_req = (dl_bind_req_t *)ctl_area;
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| 203 | dl_bind_ack_t *bind_ack = (dl_bind_ack_t *)ctl_area;
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| 204 | bind_req->dl_primitive = DL_BIND_REQ;
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| 205 | bind_req->dl_sap = sap;
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| 206 | bind_req->dl_max_conind = 1;
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| 207 | bind_req->dl_service_mode = DL_CLDLS;
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| 208 | bind_req->dl_conn_mgmt = 0;
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| 209 | bind_req->dl_xidtest_flg = 0;
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| 210 | PutCtrl (fd, sizeof(dl_bind_req_t), 0);
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| 211 | GetMsg (fd);
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| 212 | if (GOT_ERR == CheckCtrl (DL_BIND_ACK)) {
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| 213 | return GOT_ERR;
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| 214 | }
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| 215 | bcopy((u_char *)bind_ack + bind_ack->dl_addr_offset, addr,
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| 216 | bind_ack->dl_addr_length);
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| 217 | return 0;
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| 218 | }
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| 219 |
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| 220 | /**********************************************************************/
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| 221 | /*
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| 222 | * interface:
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| 223 | * function DLPI - get the mac address of the "first" interface
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| 224 | *
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| 225 | * parameter: addr: an array of six bytes, has to be allocated by the
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| 226 | caller
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| 227 | *
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| 228 | * return: 0 if OK, -1 if the address could not be determined
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| 229 | *
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| 230 | */
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| 231 |
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| 232 | static long DLPI ( char *addr)
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| 233 | {
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| 234 | int fd;
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| 235 | int ppa;
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| 236 | u_char mac_addr[25];
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| 237 |
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| 238 | const char **dev;
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| 239 |
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| 240 | for (dev = dlpi_dev; **dev != '\0'; ++dev) {
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| 241 | for (ppa=0; ppa<10; ++ppa) {
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| 242 | if (GOT_ERR != OpenDL (*dev, ppa, &fd)) {
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| 243 | if (GOT_ERR != BindDL (fd, INSAP, mac_addr)) {
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| 244 | bcopy( mac_addr, addr, 6);
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| 245 | return 0;
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| 246 | }
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| 247 | }
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| 248 | close(fd);
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| 249 | }
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| 250 | } return -1;
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| 251 | }
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| 252 | #endif //#ifndef _LINUX
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| 253 |
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| 254 |
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| 255 | #endif //#ifndef WIN32
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| 256 |
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| 257 |
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| 258 | long GetMACAddress (char *addr)
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| 259 | {
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| 260 |
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| 261 | #ifdef WIN32
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| 262 |
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| 263 | IP_ADAPTER_INFO AdapterInfo[16]; // Allocate information
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| 264 | // for up to 16 NICs
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| 265 | DWORD dwBufLen = sizeof(AdapterInfo); // Save memory size of buffer
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| 266 | PIP_ADAPTER_INFO pAdapterInfo;
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| 267 |
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| 268 | DWORD dwStatus = GetAdaptersInfo( // Call GetAdapterInfo
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| 269 | AdapterInfo, // [out] buffer to receive data
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| 270 | &dwBufLen); // [in] size of receive data buffer
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| 271 | assert(dwStatus == ERROR_SUCCESS); // Verify return value is
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| 272 | // valid, no buffer overflow
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| 273 |
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| 274 | pAdapterInfo = AdapterInfo; // Contains pointer to
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| 275 | // current adapter info
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| 276 | do {
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| 277 | // PrintMACaddress(pAdapterInfo->Address); // Print MAC address
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| 278 | /*
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| 279 | fprintf( stderr, "%02X %02X %02X %02X %02X %02X\n",
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| 280 | pAdapterInfo->Address[0],
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| 281 | pAdapterInfo->Address[1],
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| 282 | pAdapterInfo->Address[2],
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| 283 | pAdapterInfo->Address[3],
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| 284 | pAdapterInfo->Address[4],
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| 285 | pAdapterInfo->Address[5]
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| 286 | ); // Print MAC address
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| 287 | */
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| 288 | memcpy (addr, pAdapterInfo->Address, 6);
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| 289 | if( addr[0] != '\0' || addr[1] != '\0' || addr[2] != '\0' || addr[3] != '\0' || addr[4] != '\0' || addr[5] != '\0' ) break;
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| 290 |
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| 291 | pAdapterInfo = pAdapterInfo->Next; // Progress through
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| 292 | // linked list
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| 293 | }
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| 294 | while(pAdapterInfo); // Terminate if last adapter
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| 295 |
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| 296 |
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| 297 | return 0;
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| 298 |
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| 299 | #else
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| 300 |
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| 301 | /* implementation for Linux */
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| 302 | #ifdef _LINUX
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| 303 | struct ifreq ifr;
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| 304 | struct ifreq *IFR;
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| 305 | struct ifconf ifc;
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| 306 | char buf[1024];
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| 307 | int s, i;
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| 308 | int ok = 0;
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| 309 |
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| 310 | s = socket(AF_INET, SOCK_DGRAM, 0);
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| 311 | if (s==-1) {
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| 312 | return -1;
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| 313 | }
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| 314 |
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| 315 | ifc.ifc_len = sizeof(buf);
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| 316 | ifc.ifc_buf = buf;
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| 317 | ioctl(s, SIOCGIFCONF, &ifc);
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| 318 |
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| 319 | IFR = ifc.ifc_req;
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| 320 | for (i = ifc.ifc_len / (int)sizeof(struct ifreq); --i >= 0; IFR++) {
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| 321 |
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| 322 | strcpy(ifr.ifr_name, IFR->ifr_name);
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| 323 | if (ioctl(s, SIOCGIFFLAGS, &ifr) == 0) {
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| 324 | if (! (ifr.ifr_flags & IFF_LOOPBACK)) {
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| 325 | if (ioctl(s, SIOCGIFHWADDR, &ifr) == 0) {
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| 326 | ok = 1;
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| 327 | break;
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| 328 | }
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| 329 | }
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| 330 | }
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| 331 | }
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| 332 |
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| 333 | close(s);
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| 334 | if (ok) {
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| 335 | bcopy( ifr.ifr_hwaddr.sa_data, addr, 6);
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| 336 | }
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| 337 | else {
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| 338 | return -1;
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| 339 | }
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| 340 | return 0;
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| 341 | #else
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| 342 |
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| 343 | /* implementation for HP-UX */
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| 344 | #ifdef _HPUX
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| 345 | return DLPI (addr);
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| 346 | #endif /* HPUX */
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| 347 |
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| 348 |
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| 349 | /* implementation for AIX */
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| 350 | #ifdef _AIX
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| 351 |
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| 352 | int size;
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| 353 | struct kinfo_ndd *nddp;
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| 354 |
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| 355 | size = getkerninfo(KINFO_NDD, 0, 0, 0);
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| 356 | if (size <= 0) {
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| 357 | goto DLPI;
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| 358 | }
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| 359 | nddp = (struct kinfo_ndd *)malloc(size);
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| 360 |
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| 361 | if (!nddp) {
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| 362 | goto DLPI;
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| 363 | }
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| 364 | if (getkerninfo(KINFO_NDD, (char *)nddp, &size, 0) < 0) {
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| 365 | free(nddp);
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| 366 | goto DLPI;
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| 367 | }
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| 368 | bcopy(nddp->ndd_addr, addr, 6);
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| 369 | free(nddp);
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| 370 | return 0;
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| 371 | #endif
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| 372 |
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| 373 | #ifdef _SOLARIS
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| 374 | int sockfd;
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| 375 | struct arpreq myarp;
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| 376 | struct sockaddr_in *sin;
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| 377 | struct utsname myname;
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| 378 | struct hostent *hp;
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| 379 |
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| 380 | sockfd = socket(AF_INET, SOCK_DGRAM, 0);
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| 381 | if (sockfd == -1)
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| 382 | goto DLPI;
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| 383 |
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| 384 | if (uname(&myname) < 0)
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| 385 | goto DLPI;
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| 386 |
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| 387 | if ((hp = gethostbyname(myname.nodename)) == NULL)
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| 388 | goto DLPI;
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| 389 |
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| 390 | sin = (struct sockaddr_in *) &myarp.arp_pa;
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| 391 | memset (sin, 0x00, sizeof(struct sockaddr_in));
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| 392 | memcpy (&sin->sin_addr, *hp->h_addr_list, sizeof(struct in_addr));
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| 393 |
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| 394 | if (ioctl(sockfd, SIOCGARP, &myarp) != 0)
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| 395 | goto DLPI;
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| 396 |
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| 397 | memcpy (addr, myarp.arp_ha.sa_data, 6);
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| 398 | return 0;
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| 399 | #endif
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| 400 |
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| 401 |
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| 402 | DLPI:
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| 403 | return DLPI (addr);
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| 404 | #endif //#ifdef _LINUX
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| 405 |
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| 406 |
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| 407 | #endif //#ifdef WIN32
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| 408 | }
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| 409 |
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| 410 | /***********************************************************************/
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| 411 | /*
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| 412 | * Main (only for testing)
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| 413 | */
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| 414 | #ifdef _MAC_TEST
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| 415 | int main( int argc, char **argv)
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| 416 | {
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| 417 | long stat;
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| 418 | int i;
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| 419 | u_char addr[8] = {0,};
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| 420 |
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| 421 | stat = GetMacAddress (addr);
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| 422 | if (0 == stat) {
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| 423 | printf( "MAC address = ");
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| 424 | for (i=0; i<6; ++i) {
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| 425 | printf("%2.2x", addr[i]);
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| 426 | }
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| 427 | printf( "\n");
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| 428 | }
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| 429 | else {
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| 430 | fprintf( stderr, "can't get MAC address\n");
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| 431 | exit( 1);
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| 432 | }
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| 433 | return 0;
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| 434 | }
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| 435 | #endif
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