diff options
Diffstat (limited to 'winsup/cygwin/syscalls.cc')
| -rw-r--r-- | winsup/cygwin/syscalls.cc | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc index 6fa779f4b..4a7e20f43 100644 --- a/winsup/cygwin/syscalls.cc +++ b/winsup/cygwin/syscalls.cc @@ -36,6 +36,7 @@ details. */ #include <winnls.h> #include <wininet.h> #include <lmcons.h> /* for UNLEN */ +#include <rpc.h> #undef fstat #undef stat @@ -55,6 +56,8 @@ details. */ #define NEED_VFORK #include "perthread.h" #include "pwdgrp.h" +#include "cpuid.h" +#include "registry.h" #undef _close #undef _lseek @@ -2725,3 +2728,109 @@ pututline (struct utmp *ut) CloseHandle (mutex); } } + +extern "C" +long gethostid(void) +{ + unsigned data[13] = {0x92895012, + 0x10293412, + 0x29602018, + 0x81928167, + 0x34601329, + 0x75630198, + 0x89860395, + 0x62897564, + 0x00194362, + 0x20548593, + 0x96839102, + 0x12219854, + 0x00290012}; + + bool has_cpuid = false; + + if (!can_set_flag (0x00040000)) + debug_printf ("386 processor - no cpuid"); + else + { + debug_printf ("486 processor"); + if (can_set_flag (0x00200000)) + { + debug_printf ("processor supports CPUID instruction"); + has_cpuid = true; + } + else + debug_printf ("processor does not support CPUID instruction"); + } + if (has_cpuid) + { + unsigned maxf, unused[3]; + cpuid (&maxf, &unused[0], &unused[1], &unused[2], 0); + maxf &= 0xffff; + if (maxf >= 1) + { + unsigned features; + cpuid (&data[0], &unused[0], &unused[1], &features, 1); + if (features & (1 << 18)) + { + debug_printf ("processor has psn"); + if (maxf >= 3) + { + cpuid (&unused[0], &unused[1], &data[1], &data[2], 3); + debug_printf ("Processor PSN: %04x-%04x-%04x-%04x-%04x-%04x", + data[0] >> 16, data[0] & 0xffff, data[2] >> 16, data[2] & 0xffff, data[1] >> 16, data[1] & 0xffff); + } + } + else + debug_printf ("processor does not have psn"); + } + } + + UUID Uuid; + RPC_STATUS status = UuidCreateSequential (&Uuid); + if (GetLastError () == ERROR_PROC_NOT_FOUND) + status = UuidCreate (&Uuid); + if (status == RPC_S_OK) + { + data[4] = *(unsigned *)&Uuid.Data4[2]; + data[5] = *(unsigned short *)&Uuid.Data4[6]; + // Unfortunately Windows will sometimes pick a virtual Ethernet card + // e.g. VMWare Virtual Ethernet Adaptor + debug_printf ("MAC address of first Ethernet card: %02x:%02x:%02x:%02x:%02x:%02x", + Uuid.Data4[2], Uuid.Data4[3], Uuid.Data4[4], + Uuid.Data4[5], Uuid.Data4[6], Uuid.Data4[7]); + } + else + { + debug_printf ("no Ethernet card installed"); + } + + reg_key key (HKEY_LOCAL_MACHINE, KEY_READ, "SOFTWARE", "Microsoft", "Windows", "CurrentVersion", NULL); + key.get_string ("ProductId", (char *)&data[6], 24, "00000-000-0000000-00000"); + debug_printf ("Windows Product ID: %s", (char *)&data[6]); + + GetDiskFreeSpaceEx ("C:\\", NULL, (PULARGE_INTEGER) &data[11], NULL); + if (GetLastError () == ERROR_PROC_NOT_FOUND) + GetDiskFreeSpace ("C:\\", NULL, NULL, NULL, (DWORD *)&data[11]); + + debug_printf ("hostid entropy: %08x %08x %08x %08x " + "%08x %08x %08x %08x " + "%08x %08x %08x %08x " + "%08x", + data[0], data[1], + data[2], data[3], + data[4], data[5], + data[6], data[7], + data[8], data[9], + data[10], data[11], + data[12]); + + long hostid = 0x40291372; + // a random hashing algorithm + // dependancy on md5 is probably too costly + for (int i=0;i<13;i++) + hostid ^= ((data[i] << (i << 2)) | (data[i] >> (32 - (i << 2)))); + + debug_printf ("hostid: %08x", hostid); + + return hostid; +} |