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and subject line Bug#291572: libc: strptime fails to check legal value range
for seconds
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Subject: libc: strptime fails to check legal value range for seconds
From: Thomas Finneid <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
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Date: Fri, 21 Jan 2005 17:15:45 +0100
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Package: libc6
Version: 2.3.2.ds1-20
The following format specifier fails to validate the seconds argument
valid value ranges, 0-59. All other values are validated as legal.
"%Y-%m-%d %H:%M:%S"
when using a date string of format:
"2004-12-31 23:59:00"
with value for seconds:
"2004-12-31 23:59:79"
example:
struct tm time_data;
if( NULL == ((char *)strptime(date, "%Y-%m-%d %H:%M:%S", &time_data)) )
{
return(DATA_FORMAT_ERROR);
}
System:
Debian Sarge
Linux X 2.6.3 #7 SMP Tue Mar 9 17:24:55 CET 2004 i686 GNU/Linux
compiler: gcc version 3.3.5 (Debian 1:3.3.5-5)
libraries:
libc5 5.4.46-15
libc6 2.3.2.ds1-20
binutils 2.15-5
I have not reported this bug to glibc.
--
thomas
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Date: Sun, 23 Jan 2005 01:32:56 +0900
Message-ID: <[EMAIL PROTECTED]>
From: GOTO Masanori <[EMAIL PROTECTED]>
To: Thomas Finneid <[EMAIL PROTECTED]>, [EMAIL PROTECTED]
Subject: Re: Bug#291572: libc: strptime fails to check legal value range for
seconds
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At Fri, 21 Jan 2005 17:15:45 +0100,
Thomas Finneid wrote:
> The following format specifier fails to validate the seconds argument
> valid value ranges, 0-59. All other values are validated as legal.
>
> "%Y-%m-%d %H:%M:%S"
>
> when using a date string of format:
>
> "2004-12-31 23:59:00"
>
> with value for seconds:
>
> "2004-12-31 23:59:79"
>
> example:
>
>
> struct tm time_data;
>
> if( NULL == ((char *)strptime(date, "%Y-%m-%d %H:%M:%S", &time_data)) )
> {
> return(DATA_FORMAT_ERROR);
> }
Read man strptime, your exmaple problem is not complete. Try this
sample.
#define DATA1 "2004-12-31 23:59:79"
#define DATA2 "2004-12-31 23:59:59"
#define _XOPEN_SOURCE
#include <stdio.h>
#include <time.h>
void test(char *s)
{
struct tm timed;
char *p;
p = strptime(s, "%Y-%m-%d %H:%M:%S", &timed);
if (p == NULL) {
printf("completely failed\n");
return;
}
if (*p == '\0') {
printf("ok\n");
return;
}
printf("error pointer: %s\n", p);
return;
}
int main(void)
{
test(DATA1);
test(DATA2);
return 0;
}
I close this bug marked as invalid.
Regards,
-- gotom
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