[Bug 35254] New: Freemake Video Converter 4.1 installer complains about running Freemake processes (builtin 'findstr' stub app always returns "match")

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=35254

            Bug ID: 35254
           Summary: Freemake Video Converter 4.1 installer complains about
                    running Freemake processes (builtin 'findstr' stub app
                    always returns "match")
           Product: Wine
           Version: 1.7.9
          Hardware: x86
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: programs
          Assignee: wine-bugs at winehq.org
          Reporter: focht at gmx.net
    Classification: Unclassified

Hello folks,

continuation of bug 32937

Code of extracted batch file 'CheckRunningInstance.cmd':

--- snip ---
tasklist | findstr "FreemakeAC | FreemakeVD | FreemakeMB | FreemakeVC |
FreemakeYC"
--- snip ---

Relevant part of trace log:

--- snip ---
0052:Call KERNEL32.CreateProcessW(00000000,00995cec
L"\"C:\\windows\\system32\\cmd.exe\" /C
\"\"C:\\users\\focht\\Temp\\is-PQPUK.tmp\\CheckRunningInstance.cmd\"\"",00000000,00000000,00000000,04000000,00000000,00966a5c
L"C:\\users\\focht\\Temp\\is-PQPUK.tmp",0033f9e0,0033f9d0) ret=004ac6a1
...
005c:Call KERNEL32.__wine_kernel_init() ret=7bc5a036
0052:Ret  KERNEL32.CreateProcessW() retval=00000001 ret=004ac6a1 
...
005c:Call KERNEL32.CreateProcessW(00329964
L"C:\\windows\\system32\\tasklist.EXE",00145f28 L"tasklist
",00000000,00000000,00000001,00000000,00000000,00000000,00329920,00329e24)
ret=7ed031b2
...
005e:Call KERNEL32.__wine_kernel_init() ret=7bc5a036
005c:Ret  KERNEL32.CreateProcessW() retval=00000001 ret=7ed031b2 
...
005e:Starting process L"C:\\windows\\system32\\tasklist.exe"
(entryproc=0x7edfd7b8)
005e:fixme:tasklist:wmain stub: L"tasklist"
005e:Call KERNEL32.ExitProcess(00000000) ret=7edfd846 
...
005c:Ret  KERNEL32.WaitForSingleObject() retval=00000000 ret=7ed03270
005c:Call KERNEL32.GetExitCodeProcess(0000004c,7edc7ce0) ret=7ed0328b
005c:Ret  KERNEL32.GetExitCodeProcess() retval=00000001 ret=7ed0328b 
...
005c:Call KERNEL32.CreateProcessW(00329964
L"C:\\windows\\system32\\findstr.EXE",00145f28 L"findstr \"FreemakeAC |
FreemakeVD | FreemakeMB | FreemakeVC |
FreemakeYC\"",00000000,00000000,00000001,00000000,00000000,00000000,00329920,00329e24)
ret=7ed031b2
...
0060:Call KERNEL32.__wine_kernel_init() ret=7bc5a036
005c:Ret  KERNEL32.CreateProcessW() retval=00000001 ret=7ed031b2
...
005c:Call KERNEL32.WaitForSingleObject(0000004c,ffffffff) ret=7ed03270
...
0060:Starting process L"C:\\windows\\system32\\findstr.exe"
(entryproc=0x7edfd7b8)
0060:fixme:findstr:wmain stub: L"findstr" L"FreemakeAC | FreemakeVD |
FreemakeMB | FreemakeVC | FreemakeYC"
0060:Call KERNEL32.ExitProcess(00000000) ret=7edfd846 
...
005c:Ret  KERNEL32.WaitForSingleObject() retval=00000000 ret=7ed03270
005c:Call KERNEL32.GetExitCodeProcess(0000004c,7edc7ce0) ret=7ed0328b
005c:Ret  KERNEL32.GetExitCodeProcess() retval=00000001 ret=7ed0328b
...
005c:Call KERNEL32.ExitProcess(00000000) ret=7ed07262
...
0052:Ret  user32.MsgWaitForMultipleObjects() retval=00000000 ret=004af027

0052:Call KERNEL32.GetExitCodeProcess(0000007c,0033fb8c) ret=004af038
0052:Ret  KERNEL32.GetExitCodeProcess() retval=00000001 ret=004af038 
...
0052:Call user32.MessageBoxW(00010196,00644fec L"Setup has detected that one or
more of Freemake programs are currently running.\r\n\r\nPlease close all
instances of Freemake running programs now, then click OK to continue, or
Cancel to exit.",0065b51c L"Setup",00000021) ret=0047c446 
...
--- snip ---

Wine builtin 'tasklist' and 'findstr' are stub apps that return exit code 0 -
regardless what was passed in (because they do nothing as of now).
This gets propagated through cmd.exe exit code to caller (GetExitCodeProcess).

cmd.exe -> 0
  findstr.exe -> 0
      tasklist.exe -> 0

The problem is that Windows 'findstr' uses inverted logic.
Match -> exit code = 0
No match -> exit code = 1

Wine 'findstr' always returns 0 hence the installer takes this a process list
match and complains.

Source:
http://source.winehq.org/git/wine.git/blob/3ce21826c87434e9aea6fad5e62bd37b3bd99730:/programs/findstr/main.c#l23

--- snip ---
23 int wmain(int argc, WCHAR *argv[])
24 {
25     int i;
26
27     WINE_FIXME("stub:");
28     for (i = 0; i < argc; i++)
29         WINE_FIXME(" %s", wine_dbgstr_w(argv[i]));
30     WINE_FIXME("\n");
31
32     return 0;
33 }
--- snip ---

It shouldn't be too hard to implement a minimal string/pattern matching.

Another way is to change the default behaviour to "no match" (return 1).
I'm not sure if it breaks apps that currently depend on stub "match" behaviour.

$ sha1sum FreemakeVideoConverterSetup.exe
20cbd93a0041da2eeef6350f6426407df660858d  FreemakeVideoConverterSetup.exe

$ du -sh FreemakeVideoConverterSetup.exe
1.3M    FreemakeVideoConverterSetup.exe

$ wine --version
wine-1.7.9-209-gb231b4b

Regards

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