267 lines
7.4 KiB
C
267 lines
7.4 KiB
C
/*
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* RPCRT4
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*
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*/
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#include "config.h"
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#include "windef.h"
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#include "winerror.h"
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#include "winbase.h"
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#include "rpc.h"
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#include <time.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <stdlib.h>
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#ifdef HAVE_SYS_FILE_H
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# include <sys/file.h>
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#endif
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#include <sys/ioctl.h>
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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_SYS_SOCKIO_H
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# include <sys/sockio.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_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#include "debugtools.h"
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DEFAULT_DEBUG_CHANNEL(ole);
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/***********************************************************************
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* RPCRT4_LibMain
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*
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* PARAMS
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* hinstDLL [I] handle to the DLL's instance
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* fdwReason [I]
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* lpvReserved [I] reserved, must be NULL
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*
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* RETURNS
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* Success: TRUE
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* Failure: FALSE
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*/
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static DWORD RPCRT4_dwProcessesAttached = 0;
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BOOL WINAPI
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RPCRT4_LibMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
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{
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switch (fdwReason) {
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case DLL_PROCESS_ATTACH:
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RPCRT4_dwProcessesAttached++;
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break;
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case DLL_PROCESS_DETACH:
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RPCRT4_dwProcessesAttached--;
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break;
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}
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return TRUE;
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}
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/*************************************************************************
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* UuidCreate [RPCRT4]
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*
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* Creates a 128bit UUID.
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* Implemented according the DCE specification for UUID generation.
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* Code is based upon uuid library in e2fsprogs by Theodore Ts'o.
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* Copyright (C) 1996, 1997 Theodore Ts'o.
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*
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* RETURNS
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*
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* S_OK if successful.
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*/
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RPC_STATUS WINAPI UuidCreate(UUID *Uuid)
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{
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static char has_init = 0;
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unsigned char a[6];
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static int adjustment = 0;
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static struct timeval last = {0, 0};
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static UINT16 clock_seq;
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struct timeval tv;
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unsigned long long clock_reg;
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UINT clock_high, clock_low;
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UINT16 temp_clock_seq, temp_clock_mid, temp_clock_hi_and_version;
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#ifdef HAVE_NET_IF_H
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int sd;
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struct ifreq ifr, *ifrp;
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struct ifconf ifc;
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char buf[1024];
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int n, i;
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#endif
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/* Have we already tried to get the MAC address? */
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if (!has_init) {
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#ifdef HAVE_NET_IF_H
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/* BSD 4.4 defines the size of an ifreq to be
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* max(sizeof(ifreq), sizeof(ifreq.ifr_name)+ifreq.ifr_addr.sa_len
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* However, under earlier systems, sa_len isn't present, so
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* the size is just sizeof(struct ifreq)
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*/
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#ifdef HAVE_SA_LEN
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# ifndef max
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# define max(a,b) ((a) > (b) ? (a) : (b))
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# endif
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# define ifreq_size(i) max(sizeof(struct ifreq),\
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sizeof((i).ifr_name)+(i).ifr_addr.sa_len)
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# else
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# define ifreq_size(i) sizeof(struct ifreq)
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# endif /* HAVE_SA_LEN */
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sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
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if (sd < 0) {
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/* if we can't open a socket, just use random numbers */
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/* set the multicast bit to prevent conflicts with real cards */
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a[0] = (rand() & 0xff) | 0x80;
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a[1] = rand() & 0xff;
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a[2] = rand() & 0xff;
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a[3] = rand() & 0xff;
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a[4] = rand() & 0xff;
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a[5] = rand() & 0xff;
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} else {
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memset(buf, 0, sizeof(buf));
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ifc.ifc_len = sizeof(buf);
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ifc.ifc_buf = buf;
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/* get the ifconf interface */
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if (ioctl (sd, SIOCGIFCONF, (char *)&ifc) < 0) {
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close(sd);
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/* no ifconf, so just use random numbers */
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/* set the multicast bit to prevent conflicts with real cards */
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a[0] = (rand() & 0xff) | 0x80;
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a[1] = rand() & 0xff;
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a[2] = rand() & 0xff;
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a[3] = rand() & 0xff;
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a[4] = rand() & 0xff;
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a[5] = rand() & 0xff;
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} else {
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/* loop through the interfaces, looking for a valid one */
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n = ifc.ifc_len;
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for (i = 0; i < n; i+= ifreq_size(*ifr) ) {
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ifrp = (struct ifreq *)((char *) ifc.ifc_buf+i);
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strncpy(ifr.ifr_name, ifrp->ifr_name, IFNAMSIZ);
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/* try to get the address for this interface */
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# ifdef SIOCGIFHWADDR
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if (ioctl(sd, SIOCGIFHWADDR, &ifr) < 0)
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continue;
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memcpy(a, (unsigned char *)&ifr.ifr_hwaddr.sa_data, 6);
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# else
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# ifdef SIOCGENADDR
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if (ioctl(sd, SIOCGENADDR, &ifr) < 0)
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continue;
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memcpy(a, (unsigned char *) ifr.ifr_enaddr, 6);
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# else
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/* XXX we don't have a way of getting the hardware address */
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close(sd);
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a[0] = 0;
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break;
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# endif /* SIOCGENADDR */
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# endif /* SIOCGIFHWADDR */
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/* make sure it's not blank */
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if (!a[0] && !a[1] && !a[2] && !a[3] && !a[4] && !a[5])
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continue;
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goto valid_address;
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}
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/* if we didn't find a valid address, make a random one */
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/* once again, set multicast bit to avoid conflicts */
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a[0] = (rand() & 0xff) | 0x80;
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a[1] = rand() & 0xff;
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a[2] = rand() & 0xff;
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a[3] = rand() & 0xff;
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a[4] = rand() & 0xff;
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a[5] = rand() & 0xff;
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valid_address:
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close(sd);
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}
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}
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#else
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/* no networking info, so generate a random address */
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a[0] = (rand() & 0xff) | 0x80;
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a[1] = rand() & 0xff;
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a[2] = rand() & 0xff;
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a[3] = rand() & 0xff;
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a[4] = rand() & 0xff;
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a[5] = rand() & 0xff;
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#endif /* HAVE_NET_IF_H */
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has_init = 1;
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}
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/* generate time element of GUID */
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/* Assume that the gettimeofday() has microsecond granularity */
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#define MAX_ADJUSTMENT 10
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try_again:
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gettimeofday(&tv, 0);
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if ((last.tv_sec == 0) && (last.tv_usec == 0)) {
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clock_seq = ((rand() & 0xff) << 8) + (rand() & 0xff);
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clock_seq &= 0x1FFF;
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last = tv;
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last.tv_sec--;
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}
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if ((tv.tv_sec < last.tv_sec) ||
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((tv.tv_sec == last.tv_sec) &&
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(tv.tv_usec < last.tv_usec))) {
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clock_seq = (clock_seq+1) & 0x1FFF;
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adjustment = 0;
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} else if ((tv.tv_sec == last.tv_sec) &&
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(tv.tv_usec == last.tv_usec)) {
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if (adjustment >= MAX_ADJUSTMENT)
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goto try_again;
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adjustment++;
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} else
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adjustment = 0;
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clock_reg = tv.tv_usec*10 + adjustment;
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clock_reg += ((unsigned long long) tv.tv_sec)*10000000;
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clock_reg += (((unsigned long long) 0x01B21DD2) << 32) + 0x13814000;
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clock_high = clock_reg >> 32;
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clock_low = clock_reg;
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temp_clock_seq = clock_seq | 0x8000;
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temp_clock_mid = (UINT16)clock_high;
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temp_clock_hi_and_version = (clock_high >> 16) | 0x1000;
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/* pack the information into the GUID structure */
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((unsigned char*)&Uuid->Data1)[3] = (unsigned char)clock_low;
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clock_low >>= 8;
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((unsigned char*)&Uuid->Data1)[2] = (unsigned char)clock_low;
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clock_low >>= 8;
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((unsigned char*)&Uuid->Data1)[1] = (unsigned char)clock_low;
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clock_low >>= 8;
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((unsigned char*)&Uuid->Data1)[0] = (unsigned char)clock_low;
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((unsigned char*)&Uuid->Data2)[1] = (unsigned char)temp_clock_mid;
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temp_clock_mid >>= 8;
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((unsigned char*)&Uuid->Data2)[0] = (unsigned char)temp_clock_mid;
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((unsigned char*)&Uuid->Data3)[1] = (unsigned char)temp_clock_hi_and_version;
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temp_clock_hi_and_version >>= 8;
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((unsigned char*)&Uuid->Data3)[0] = (unsigned char)temp_clock_hi_and_version;
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((unsigned char*)Uuid->Data4)[1] = (unsigned char)temp_clock_seq;
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temp_clock_seq >>= 8;
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((unsigned char*)Uuid->Data4)[0] = (unsigned char)temp_clock_seq;
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((unsigned char*)Uuid->Data4)[2] = a[0];
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((unsigned char*)Uuid->Data4)[3] = a[1];
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((unsigned char*)Uuid->Data4)[4] = a[2];
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((unsigned char*)Uuid->Data4)[5] = a[3];
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((unsigned char*)Uuid->Data4)[6] = a[4];
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((unsigned char*)Uuid->Data4)[7] = a[5];
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TRACE("%s", debugstr_guid(Uuid));
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return S_OK;
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}
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