| 1 | /*
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| 2 | * This file contains miscellaneous pieces of code which regfio.c
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| 3 | * depends upon, from the Samba Subversion tree. See:
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| 4 | * http://websvn.samba.org/cgi-bin/viewcvs.cgi/trunk/source/
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| 5 | *
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| 6 | * Copyright (C) 2005-2006,2009 Timothy D. Morgan
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| 7 | * Copyright (C) 1992-2005 Samba development team
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| 8 | * (see individual files under Subversion for details.)
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| 9 | *
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| 10 | * This program is free software; you can redistribute it and/or modify
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| 11 | * it under the terms of the GNU General Public License as published by
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| 12 | * the Free Software Foundation; version 3 of the License.
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| 13 | *
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| 14 | * This program is distributed in the hope that it will be useful,
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 17 | * GNU General Public License for more details.
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| 18 | *
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| 19 | * You should have received a copy of the GNU General Public License
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| 20 | * along with this program; if not, write to the Free Software
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| 21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 22 | *
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| 23 | * $Id: smb_deps.c 147 2009-02-22 19:31:52Z tim $
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| 24 | */
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| 25 |
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| 26 | #include "smb_deps.h"
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| 27 |
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| 28 |
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| 29 | /* These act as replacements for numerous Samba memory allocation
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| 30 | * functions.
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| 31 | */
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| 32 | void* zalloc(size_t size)
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| 33 | {
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| 34 | void* ret_val = NULL;
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| 35 | if((size > 0) && (ret_val = (void*)malloc(size)) != NULL)
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| 36 | memset(ret_val, 0, size);
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| 37 |
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| 38 | return ret_val;
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| 39 | }
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| 40 |
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| 41 | void* zcalloc(size_t size, unsigned int count)
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| 42 | {
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| 43 | return zalloc(size*count);
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| 44 | }
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| 45 |
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| 46 | /* From lib/time.c */
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| 47 |
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| 48 | /****************************************************************************
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| 49 | Put a 8 byte filetime from a time_t
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| 50 | This takes real GMT as input and converts to kludge-GMT
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| 51 | ****************************************************************************/
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| 52 | void unix_to_nt_time(NTTIME *nt, time_t t)
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| 53 | {
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| 54 | double d;
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| 55 |
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| 56 | if (t==0)
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| 57 | {
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| 58 | nt->low = 0;
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| 59 | nt->high = 0;
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| 60 | return;
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| 61 | }
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| 62 |
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| 63 | if (t == TIME_T_MAX)
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| 64 | {
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| 65 | nt->low = 0xffffffff;
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| 66 | nt->high = 0x7fffffff;
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| 67 | return;
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| 68 | }
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| 69 |
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| 70 | if (t == -1)
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| 71 | {
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| 72 | nt->low = 0xffffffff;
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| 73 | nt->high = 0xffffffff;
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| 74 | return;
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| 75 | }
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| 76 |
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| 77 | /* this converts GMT to kludge-GMT */
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| 78 | /* XXX: This was removed due to difficult dependency requirements.
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| 79 | * So far, times appear to be correct without this adjustment, but
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| 80 | * that may be proven wrong with adequate testing.
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| 81 | */
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| 82 | /* t -= TimeDiff(t) - get_serverzone(); */
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| 83 |
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| 84 | d = (double)(t);
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| 85 | d += TIME_FIXUP_CONSTANT;
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| 86 | d *= 1.0e7;
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| 87 |
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| 88 | nt->high = (uint32)(d * (1.0/(4.0*(double)(1<<30))));
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| 89 | nt->low = (uint32)(d - ((double)nt->high)*4.0*(double)(1<<30));
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| 90 | }
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| 91 |
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| 92 |
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| 93 | /****************************************************************************
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| 94 | Interpret an 8 byte "filetime" structure to a time_t
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| 95 | It's originally in "100ns units since jan 1st 1601"
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| 96 |
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| 97 | An 8 byte value of 0xffffffffffffffff will be returned as (time_t)0.
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| 98 |
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| 99 | It appears to be kludge-GMT (at least for file listings). This means
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| 100 | its the GMT you get by taking a localtime and adding the
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| 101 | serverzone. This is NOT the same as GMT in some cases. This routine
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| 102 | converts this to real GMT.
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| 103 | ****************************************************************************/
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| 104 | time_t nt_time_to_unix(const NTTIME* nt)
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| 105 | {
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| 106 | double d;
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| 107 | time_t ret;
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| 108 | /* The next two lines are a fix needed for the
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| 109 | broken SCO compiler. JRA. */
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| 110 | time_t l_time_min = TIME_T_MIN;
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| 111 | time_t l_time_max = TIME_T_MAX;
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| 112 |
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| 113 | if (nt->high == 0 || (nt->high == 0xffffffff && nt->low == 0xffffffff))
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| 114 | return(0);
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| 115 |
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| 116 | d = ((double)nt->high)*4.0*(double)(1<<30);
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| 117 | d += (nt->low&0xFFF00000);
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| 118 | d *= 1.0e-7;
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| 119 |
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| 120 | /* now adjust by 369 years to make the secs since 1970 */
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| 121 | d -= TIME_FIXUP_CONSTANT;
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| 122 |
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| 123 | if (d <= l_time_min)
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| 124 | return (l_time_min);
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| 125 |
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| 126 | if (d >= l_time_max)
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| 127 | return (l_time_max);
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| 128 |
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| 129 | ret = (time_t)(d+0.5);
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| 130 |
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| 131 | /* this takes us from kludge-GMT to real GMT */
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| 132 | /* XXX: This was removed due to difficult dependency requirements.
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| 133 | * So far, times appear to be correct without this adjustment, but
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| 134 | * that may be proven wrong with adequate testing.
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| 135 | */
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| 136 | /*
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| 137 | ret -= get_serverzone();
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| 138 | ret += LocTimeDiff(ret);
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| 139 | */
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| 140 |
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| 141 | return(ret);
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| 142 | }
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| 143 |
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| 144 | /* End of stuff from lib/time.c */
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