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Aleq
Junior Member
Joined: 07 Jun 2006
Posts: 34
Location: CZ, EU
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 Posted: Wed Apr 25, 2012 2:31 pm Post subject: Android ADB-FS plugin development, filetime issue - TC BUG? |
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Hi Everybody.
I'm fixing and enhancing Sztupy's ADB-FS plugin accessing android device using ADB protocol. I'm tearing my hair off now because I can't get the time and date correctly. I have tried so many ways of converting FILETIME, unix timestamp, SYSTEMTIME, ...
I have narrowed the issue down to this:
| Code: | UnixTimeToFileTime(fd->modificationTime, (LPFILETIME) FieldValue);
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which is implemented:
| Code: | void UnixTimeToFileTime(time_t t, LPFILETIME pft) {
long long ll;
ll = Int32x32To64(t, 10000000) + 116444736000000000;
pft->dwLowDateTime = (DWORD) ll;
pft->dwHighDateTime = ll >> 32;
}
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I even tried to get the time from http://www.epochconverter.com/ and inject it into the variable while debugging to see the result. It was off by several minutes and few hours again. Or I tried to construct the SYSTEMTIME and then used Microsoft's methods to convert that to FILETIME. Again, the same difference - few hours and some minutes off.
I would understand the hours (timezone) but minutes?
I'm desperate, so any information is welcome. Tested with latest TC7.57a and 8.0. VS C++ 2010 Express.
Thanks,
A.
Last edited by Aleq on Thu Apr 26, 2012 2:34 am; edited 1 time in total |
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Aleq
Junior Member
Joined: 07 Jun 2006
Posts: 34
Location: CZ, EU
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ghisler(Author)
Site Admin
Joined: 04 Feb 2003
Posts: 24602
Location: Switzerland
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| Posted: Thu Apr 26, 2012 7:10 am Post subject: |
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I have written an ADB plugin myself (private use, not really ready for release), and I'm also experiencing problems with time zones. At least the seconds are correct. I'm using the following code:
| Code: | BOOL UnixTimeToLocalTime(long* mtime,LPFILETIME ft)
{
if (*mtime==0)
return false;
struct tm* fttm=localtime(mtime); // apparently Android returns local time
if (fttm==NULL)
return false;
SYSTEMTIME st;
st.wYear=fttm->tm_year;
if (st.wYear<200)
st.wYear+=1900;
st.wMonth=fttm->tm_mon+1; // 0-11 in struct tm*
st.wDay=fttm->tm_mday;
st.wHour=fttm->tm_hour;
st.wMinute=fttm->tm_min;
st.wSecond=fttm->tm_sec;
st.wDayOfWeek=0;
st.wMilliseconds=0;
return SystemTimeToFileTime(&st,ft);
} |
I tried with localtime(mtime) and gmtime(mtime), but got mixed results - some file times are off by 1 hour, some by two. In the end, I didn't release my ADB plugin because of this timestamp problem.
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Author of Total Commander
http://www.ghisler.com |
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Aleq
Junior Member
Joined: 07 Jun 2006
Posts: 34
Location: CZ, EU
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| Posted: Thu Apr 26, 2012 10:30 am Post subject: |
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Hello Christian,
thank you for your answer. I tried your function but the minutes were off again. I have narrowed down how to simulate it now as even if I enter fixed/manual value, I don't get it correctly in the TC.
This is what I have in int __stdcall FsContentGetValueT(BOOL unicode,WCHAR* FileName,int FieldIndex,int UnitIndex,void* FieldValue,int maxlen,int flags):
| Code: | long mtime = (long) fd->modificationTime;
GhislersUnixTimeToLocalTime(&mtime, (LPFILETIME) FieldValue);
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the function narrowed down to:
| Code: |
BOOL GhislersUnixTimeToLocalTime(long* mtime,LPFILETIME ft)
{
SYSTEMTIME st;
st.wYear=2012;
st.wMonth=5;
st.wDay=10;
st.wHour=13;
st.wMinute=30;
st.wSecond=0;
st.wDayOfWeek=0;
st.wMilliseconds=0;
return SystemTimeToFileTime(&st,ft);
}
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but I get:
Image: http://img.ctrlv.in/4f997775e39f2.jpg
i.e. 10.05.2012 16:22
I still see this is a fault in TC or...? I'm confused.
Thanks! |
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ghisler(Author)
Site Admin
Joined: 04 Feb 2003
Posts: 24602
Location: Switzerland
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| Posted: Fri Apr 27, 2012 2:16 am Post subject: |
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What are you comparing the minutes to? I compared them with the minutes shown by Total Commander for Android, and they were the same.
Btw, you are using some strange custom columns view, what fields are you using? Can you try "Full" view instead?
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Author of Total Commander
http://www.ghisler.com |
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