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start.exe: Search PATH for the executable to launch. 

We want to launch all executables through CreateProcess(), but need to
provide the full path, as the searching CreateProcess() does
internally when the application name is NULL is more limited: it only
searches for .EXE files.

Signed-off-by: Damjan Jovanovic <damjan.jov@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
stable
Damjan Jovanovic 2019-08-11 16:28:50 +02:00 committed by Alexandre Julliard
parent 3c7501e8f0
commit 42fa293d48
1 changed files with 177 additions and 5 deletions
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182
programs/start/start.c
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@ -191,6 +191,165 @@ static void parse_title(const WCHAR *arg, WCHAR *title, int size)
title[next] = '\0';
}
static BOOL search_path(const WCHAR *firstParam, WCHAR **full_path)
{
/* Copied from WCMD_run_program() in programs/cmd/wcmdmain.c */
#define MAXSTRING 8192
static const WCHAR slashW[] = {'\\','\0',};
static const WCHAR envPath[] = {'P','A','T','H','\0'};
static const WCHAR envPathExt[] = {'P','A','T','H','E','X','T','\0'};
static const WCHAR dfltPathExt[] = {'.','b','a','t',';',
'.','c','o','m',';',
'.','c','m','d',';',
'.','e','x','e','\0'};
static const WCHAR delims[] = {'/','\\',':','\0'};
WCHAR temp[MAX_PATH];
WCHAR pathtosearch[MAXSTRING];
WCHAR *pathposn;
WCHAR stemofsearch[MAX_PATH]; /* maximum allowed executable name is
MAX_PATH, including null character */
WCHAR *lastSlash;
WCHAR pathext[MAXSTRING];
BOOL extensionsupplied = FALSE;
DWORD len;
/* Calculate the search path and stem to search for */
if (wcspbrk (firstParam, delims) == NULL) { /* No explicit path given, search path */
static const WCHAR curDir[] = {'.',';','\0'};
lstrcpyW(pathtosearch, curDir);
len = GetEnvironmentVariableW(envPath, &pathtosearch[2], ARRAY_SIZE(pathtosearch)-2);
if ((len == 0) || (len >= ARRAY_SIZE(pathtosearch) - 2)) {
static const WCHAR curDir[] = {'.','\0'};
lstrcpyW (pathtosearch, curDir);
}
if (wcschr(firstParam, '.') != NULL) extensionsupplied = TRUE;
if (lstrlenW(firstParam) >= MAX_PATH) {
return FALSE;
}
lstrcpyW(stemofsearch, firstParam);
} else {
/* Convert eg. ..\fred to include a directory by removing file part */
GetFullPathNameW(firstParam, ARRAY_SIZE(pathtosearch), pathtosearch, NULL);
lastSlash = wcsrchr(pathtosearch, '\\');
if (lastSlash && wcschr(lastSlash, '.') != NULL) extensionsupplied = TRUE;
lstrcpyW(stemofsearch, lastSlash+1);
/* Reduce pathtosearch to a path with trailing '\' to support c:\a.bat and
c:\windows\a.bat syntax */
if (lastSlash) *(lastSlash + 1) = 0x00;
}
/* Now extract PATHEXT */
len = GetEnvironmentVariableW(envPathExt, pathext, ARRAY_SIZE(pathext));
if ((len == 0) || (len >= ARRAY_SIZE(pathext))) {
lstrcpyW (pathext, dfltPathExt);
}
/* Loop through the search path, dir by dir */
pathposn = pathtosearch;
WINE_TRACE("Searching in '%s' for '%s'\n", wine_dbgstr_w(pathtosearch),
wine_dbgstr_w(stemofsearch));
while (pathposn) {
WCHAR thisDir[MAX_PATH] = {'\0'};
int length = 0;
WCHAR *pos = NULL;
BOOL found = FALSE;
BOOL inside_quotes = FALSE;
/* Work on the first directory on the search path */
pos = pathposn;
while ((inside_quotes || *pos != ';') && *pos != 0)
{
if (*pos == '"')
inside_quotes = !inside_quotes;
pos++;
}
if (*pos) { /* Reached semicolon */
memcpy(thisDir, pathposn, (pos-pathposn) * sizeof(WCHAR));
thisDir[(pos-pathposn)] = 0x00;
pathposn = pos+1;
} else { /* Reached string end */
lstrcpyW(thisDir, pathposn);
pathposn = NULL;
}
/* Remove quotes */
length = lstrlenW(thisDir);
if (thisDir[length - 1] == '"')
thisDir[length - 1] = 0;
if (*thisDir != '"')
lstrcpyW(temp, thisDir);
else
lstrcpyW(temp, thisDir + 1);
/* Since you can have eg. ..\.. on the path, need to expand
to full information */
GetFullPathNameW(temp, MAX_PATH, thisDir, NULL);
/* 1. If extension supplied, see if that file exists */
lstrcatW(thisDir, slashW);
lstrcatW(thisDir, stemofsearch);
pos = &thisDir[lstrlenW(thisDir)]; /* Pos = end of name */
/* 1. If extension supplied, see if that file exists */
if (extensionsupplied) {
if (GetFileAttributesW(thisDir) != INVALID_FILE_ATTRIBUTES) {
found = TRUE;
}
}
/* 2. Any .* matches? */
if (!found) {
HANDLE h;
WIN32_FIND_DATAW finddata;
static const WCHAR allFiles[] = {'.','*','\0'};
lstrcatW(thisDir,allFiles);
h = FindFirstFileW(thisDir, &finddata);
FindClose(h);
if (h != INVALID_HANDLE_VALUE) {
WCHAR *thisExt = pathext;
/* 3. Yes - Try each path ext */
while (thisExt) {
WCHAR *nextExt = wcschr(thisExt, ';');
if (nextExt) {
memcpy(pos, thisExt, (nextExt-thisExt) * sizeof(WCHAR));
pos[(nextExt-thisExt)] = 0x00;
thisExt = nextExt+1;
} else {
lstrcpyW(pos, thisExt);
thisExt = NULL;
}
if (GetFileAttributesW(thisDir) != INVALID_FILE_ATTRIBUTES) {
found = TRUE;
thisExt = NULL;
}
}
}
}
if (found) {
int needed_size = lstrlenW(thisDir) + 1;
*full_path = HeapAlloc(GetProcessHeap(), 0, needed_size * sizeof(WCHAR));
if (*full_path)
lstrcpyW(*full_path, thisDir);
return TRUE;
}
}
return FALSE;
}
int wmain (int argc, WCHAR *argv[])
{
SHELLEXECUTEINFOW sei;
@ -200,7 +359,9 @@ int wmain (int argc, WCHAR *argv[])
BOOL unix_mode = FALSE;
BOOL progid_open = FALSE;
WCHAR *title = NULL;
const WCHAR *file;
WCHAR *dos_filename = NULL;
WCHAR *fullpath = NULL;
WCHAR *parent_directory = NULL;
DWORD binary_type;
@ -359,10 +520,10 @@ int wmain (int argc, WCHAR *argv[])
if (i == argc) {
if (progid_open || unix_mode)
usage();
sei.lpFile = cmdW;
file = cmdW;
}
else
sei.lpFile = argv[i++];
file = argv[i++];
args = build_args( argc - i, &argv[i] );
sei.lpParameters = args;
@ -377,10 +538,10 @@ int wmain (int argc, WCHAR *argv[])
if (!wine_get_dos_file_name_ptr)
fatal_string(STRING_UNIXFAIL);
multibyte_unixpath_len = WideCharToMultiByte(CP_UNIXCP, 0, sei.lpFile, -1, NULL, 0, NULL, NULL);
multibyte_unixpath_len = WideCharToMultiByte(CP_UNIXCP, 0, file, -1, NULL, 0, NULL, NULL);
multibyte_unixpath = HeapAlloc(GetProcessHeap(), 0, multibyte_unixpath_len);
WideCharToMultiByte(CP_UNIXCP, 0, sei.lpFile, -1, multibyte_unixpath, multibyte_unixpath_len, NULL, NULL);
WideCharToMultiByte(CP_UNIXCP, 0, file, -1, multibyte_unixpath, multibyte_unixpath_len, NULL, NULL);
dos_filename = wine_get_dos_file_name_ptr(multibyte_unixpath);
@ -393,6 +554,16 @@ int wmain (int argc, WCHAR *argv[])
if (!sei.lpDirectory)
sei.lpDirectory = parent_directory = get_parent_dir(dos_filename);
sei.fMask &= ~SEE_MASK_FLAG_NO_UI;
} else {
if (search_path(file, &fullpath)) {
if (fullpath != NULL) {
sei.lpFile = fullpath;
} else {
fatal_string_error(STRING_EXECFAIL, ERROR_OUTOFMEMORY, file);
}
} else {
sei.lpFile = file;
}
}
if (GetBinaryTypeW(sei.lpFile, &binary_type)) {
@ -413,7 +584,7 @@ int wmain (int argc, WCHAR *argv[])
startup_info.lpTitle = title;
if (!CreateProcessW(
NULL, /* lpApplicationName */
sei.lpFile, /* lpApplicationName */
commandline, /* lpCommandLine */
NULL, /* lpProcessAttributes */
NULL, /* lpThreadAttributes */
@ -484,6 +655,7 @@ int wmain (int argc, WCHAR *argv[])
done:
HeapFree( GetProcessHeap(), 0, args );
HeapFree( GetProcessHeap(), 0, dos_filename );
HeapFree( GetProcessHeap(), 0, fullpath );
HeapFree( GetProcessHeap(), 0, parent_directory );
HeapFree( GetProcessHeap(), 0, title );