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Only check year against 2038 if time_t is 32-bit.

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This commit is contained in:
Todd C. Miller 2013-04-17 09:31:26 -04:00
parent cc3c76b85d
commit d32cb3d659
2 changed files with 10 additions and 15 deletions
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20
plugins/sudoers/getdate.c
View File

@ -654,9 +654,8 @@ Convert(Month, Day, Year, Hours, Minutes, Seconds, Meridian, DSTmode)
}
DaysInMonth[1] = Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0)
? 29 : 28;
/* Checking for 2038 bogusly assumes that time_t is 32 bits. But
I'm too lazy to try to check for time_t overflow in another way. */
if (Year < EPOCH || Year > 2038
/* 32-bit time_t cannot represent years past 2038 */
if (Year < EPOCH || (sizeof(time_t) == sizeof(int) && Year > 2038)
|| Month < 1 || Month > 12
/* Lint fluff: "conversion from long may lose accuracy" */
|| Day < 1 || Day > DaysInMonth[(int)--Month])
@ -1028,7 +1027,7 @@ main(ac, av)
/* NOTREACHED */
}
#endif /* defined(TEST) */
#line 979 "getdate.c"
#line 978 "getdate.c"
/* allocate initial stack or double stack size, up to YYMAXDEPTH */
#if defined(__cplusplus) || defined(__STDC__)
static int yygrowstack(void)
@ -1040,28 +1039,25 @@ static int yygrowstack()
short *newss;
YYSTYPE *newvs;
if ((newsize = yystacksize) == 0)
newsize = YYINITSTACKSIZE;
else if (newsize >= YYMAXDEPTH)
newsize = yystacksize ? yystacksize : YYINITSTACKSIZE;
if (newsize >= YYMAXDEPTH)
return -1;
else if ((newsize *= 2) > YYMAXDEPTH)
newsize = YYMAXDEPTH;
i = yyssp - yyss;
#ifdef SIZE_MAX
#define YY_SIZE_MAX SIZE_MAX
#else
#define YY_SIZE_MAX 0x7fffffff
#endif
if (!newsize || YY_SIZE_MAX / newsize < sizeof *newss)
if (YY_SIZE_MAX / newsize < sizeof *newss)
goto bail;
i = yyssp - yyss;
newss = yyss ? (short *)realloc(yyss, newsize * sizeof *newss) :
(short *)malloc(newsize * sizeof *newss); /* overflow check above */
if (newss == NULL)
goto bail;
yyss = newss;
yyssp = newss + i;
if (!newsize || YY_SIZE_MAX / newsize < sizeof *newvs)
goto bail;
newvs = yyvs ? (YYSTYPE *)realloc(yyvs, newsize * sizeof *newvs) :
(YYSTYPE *)malloc(newsize * sizeof *newvs); /* overflow check above */
if (newvs == NULL)
@ -1523,7 +1519,7 @@ case 41:
yyval.Meridian = yyvsp[0].Meridian;
}
break;
#line 1474 "getdate.c"
#line 1470 "getdate.c"
}
yyssp -= yym;
yystate = *yyssp;

5
plugins/sudoers/getdate.y
View File

@ -586,9 +586,8 @@ Convert(Month, Day, Year, Hours, Minutes, Seconds, Meridian, DSTmode)
}
DaysInMonth[1] = Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0)
? 29 : 28;
/* Checking for 2038 bogusly assumes that time_t is 32 bits. But
I'm too lazy to try to check for time_t overflow in another way. */
if (Year < EPOCH || Year > 2038
/* 32-bit time_t cannot represent years past 2038 */
if (Year < EPOCH || (sizeof(time_t) == sizeof(int) && Year > 2038)
|| Month < 1 || Month > 12
/* Lint fluff: "conversion from long may lose accuracy" */
|| Day < 1 || Day > DaysInMonth[(int)--Month])