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vim/src/dosinst.h
Yegappan Lakshmanan a34b4460c2 patch 8.2.5077: various warnings from clang on MS-Windows 
Problem:    Various warnings from clang on MS-Windows.
Solution:   Avoid the warnings. (Yegappan Lakshmanan, closes #10553)
2022-06-11 10:43:26 +01:00

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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* dosinst.h: Common code for dosinst.c and uninstall.c
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifndef UNIX_LINT
# include <io.h>
# include <ctype.h>
# include <direct.h>
# include <windows.h>
# include <shlobj.h>
#endif
#ifdef UNIX_LINT
// Running lint on Unix: Some things are missing.
char *searchpath(char *name);
#endif
#if defined(UNIX_LINT)
# include <unistd.h>
# include <errno.h>
#endif
#include "version.h"
#if defined(UNIX_LINT)
# define vim_mkdir(x, y) mkdir((char *)(x), y)
#else
# define vim_mkdir(x, y) _mkdir((char *)(x))
#endif
#define sleep(n) Sleep((n) * 1000)
// ----------------------------------------
#define BUFSIZE (MAX_PATH*2) // long enough to hold a file name path
#define NUL 0
#define FAIL 0
#define OK 1
#ifndef FALSE
# define FALSE 0
#endif
#ifndef TRUE
# define TRUE 1
#endif
/*
* Modern way of creating registry entries, also works on 64 bit windows when
* compiled as a 32 bit program.
*/
# ifndef KEY_WOW64_64KEY
# define KEY_WOW64_64KEY 0x0100
# endif
# ifndef KEY_WOW64_32KEY
# define KEY_WOW64_32KEY 0x0200
# endif
#ifdef __MINGW32__
# define UNUSED __attribute__((unused))
#else
# define UNUSED
#endif
#define VIM_STARTMENU "Programs\\Vim " VIM_VERSION_SHORT
int interactive; // non-zero when running interactively
/*
* Call malloc() and exit when out of memory.
*/
static void *
alloc(int len)
{
void *p;
p = malloc(len);
if (p == NULL)
{
printf("ERROR: out of memory\n");
exit(1);
}
return p;
}
/*
* The toupper() in Bcc 5.5 doesn't work, use our own implementation.
*/
static int
mytoupper(int c)
{
if (c >= 'a' && c <= 'z')
return c - 'a' + 'A';
return c;
}
static void
myexit(int n)
{
if (!interactive)
{
// Present a prompt, otherwise error messages can't be read.
printf("Press Enter to continue\n");
rewind(stdin);
(void)getchar();
}
exit(n);
}
typedef BOOL (WINAPI *LPFN_ISWOW64PROCESS)(HANDLE, PBOOL);
/*
* Check if this is a 64-bit OS.
*/
static BOOL
is_64bit_os(void)
{
#ifdef _WIN64
return TRUE;
#else
BOOL bIsWow64 = FALSE;
LPFN_ISWOW64PROCESS pIsWow64Process;
pIsWow64Process = (LPFN_ISWOW64PROCESS)GetProcAddress(
GetModuleHandle("kernel32"), "IsWow64Process");
if (pIsWow64Process != NULL)
pIsWow64Process(GetCurrentProcess(), &bIsWow64);
return bIsWow64;
#endif
}
static char *
searchpath(char *name)
{
static char widename[2 * BUFSIZE];
static char location[2 * BUFSIZE + 2];
// There appears to be a bug in FindExecutableA() on Windows NT.
// Use FindExecutableW() instead...
MultiByteToWideChar(CP_ACP, 0, (LPCTSTR)name, -1,
(LPWSTR)widename, BUFSIZE);
if (FindExecutableW((LPCWSTR)widename, (LPCWSTR)"",
(LPWSTR)location) > (HINSTANCE)32)
{
WideCharToMultiByte(CP_ACP, 0, (LPWSTR)location, -1,
(LPSTR)widename, 2 * BUFSIZE, NULL, NULL);
return widename;
}
return NULL;
}
/*
* Call searchpath() and save the result in allocated memory, or return NULL.
*/
static char *
searchpath_save(char *name)
{
char *p;
char *s;
p = searchpath(name);
if (p == NULL)
return NULL;
s = alloc(strlen(p) + 1);
strcpy(s, p);
return s;
}
#ifndef CSIDL_COMMON_PROGRAMS
# define CSIDL_COMMON_PROGRAMS 0x0017
#endif
#ifndef CSIDL_COMMON_DESKTOPDIRECTORY
# define CSIDL_COMMON_DESKTOPDIRECTORY 0x0019
#endif
/*
* Get the path to a requested Windows shell folder.
*
* Return FAIL on error, OK on success
*/
int
get_shell_folder_path(
char *shell_folder_path,
const char *shell_folder_name)
{
/*
* The following code was successfully built with make_mvc.mak.
* The resulting executable worked on Windows 95, Millennium Edition, and
* 2000 Professional. But it was changed after testing...
*/
LPITEMIDLIST pidl = 0; // Pointer to an Item ID list allocated below
LPMALLOC pMalloc; // Pointer to an IMalloc interface
int csidl;
int alt_csidl = -1;
static int desktop_csidl = -1;
static int programs_csidl = -1;
int *pcsidl;
int r;
if (strcmp(shell_folder_name, "desktop") == 0)
{
pcsidl = &desktop_csidl;
csidl = CSIDL_COMMON_DESKTOPDIRECTORY;
alt_csidl = CSIDL_DESKTOP;
}
else if (strncmp(shell_folder_name, "Programs", 8) == 0)
{
pcsidl = &programs_csidl;
csidl = CSIDL_COMMON_PROGRAMS;
alt_csidl = CSIDL_PROGRAMS;
}
else
{
printf("\nERROR (internal) unrecognised shell_folder_name: \"%s\"\n\n",
shell_folder_name);
return FAIL;
}
// Did this stuff before, use the same ID again.
if (*pcsidl >= 0)
{
csidl = *pcsidl;
alt_csidl = -1;
}
retry:
// Initialize pointer to IMalloc interface
if (NOERROR != SHGetMalloc(&pMalloc))
{
printf("\nERROR getting interface for shell_folder_name: \"%s\"\n\n",
shell_folder_name);
return FAIL;
}
// Get an ITEMIDLIST corresponding to the folder code
if (NOERROR != SHGetSpecialFolderLocation(0, csidl, &pidl))
{
if (alt_csidl < 0 || NOERROR != SHGetSpecialFolderLocation(0,
alt_csidl, &pidl))
{
printf("\nERROR getting ITEMIDLIST for shell_folder_name: \"%s\"\n\n",
shell_folder_name);
return FAIL;
}
csidl = alt_csidl;
alt_csidl = -1;
}
// Translate that ITEMIDLIST to a string
r = SHGetPathFromIDList(pidl, shell_folder_path);
// Free the data associated with pidl
pMalloc->lpVtbl->Free(pMalloc, pidl);
// Release the IMalloc interface
pMalloc->lpVtbl->Release(pMalloc);
if (!r)
{
if (alt_csidl >= 0)
{
// We probably get here for Windows 95: the "all users"
// desktop/start menu entry doesn't exist.
csidl = alt_csidl;
alt_csidl = -1;
goto retry;
}
printf("\nERROR translating ITEMIDLIST for shell_folder_name: \"%s\"\n\n",
shell_folder_name);
return FAIL;
}
// If there is an alternative: verify we can write in this directory.
// This should cause a retry when the "all users" directory exists but we
// are a normal user and can't write there.
if (alt_csidl >= 0)
{
char tbuf[BUFSIZE];
FILE *fd;
strcpy(tbuf, shell_folder_path);
strcat(tbuf, "\\vim write test");
fd = fopen(tbuf, "w");
if (fd == NULL)
{
csidl = alt_csidl;
alt_csidl = -1;
goto retry;
}
fclose(fd);
unlink(tbuf);
}
/*
* Keep the found csidl for next time, so that we don't have to do the
* write test every time.
*/
if (*pcsidl < 0)
*pcsidl = csidl;
if (strncmp(shell_folder_name, "Programs\\", 9) == 0)
strcat(shell_folder_path, shell_folder_name + 8);
return OK;
}
/*
* List of targets. The first one (index zero) is used for the default path
* for the batch files.
*/
#define TARGET_COUNT 9
struct
{
char *name; // Vim exe name (without .exe)
char *batname; // batch file name
char *lnkname; // shortcut file name
char *exename; // exe file name
char *exenamearg; // exe file name when using exearg
char *exearg; // argument for vim.exe or gvim.exe
char *oldbat; // path to existing xxx.bat or NULL
char *oldexe; // path to existing xxx.exe or NULL
char batpath[BUFSIZE]; // path of batch file to create; not
// created when it's empty
} targets[TARGET_COUNT] =
{
{"all", "batch files", NULL, NULL, NULL, NULL, NULL, NULL, ""},
{"vim", "vim.bat", "Vim.lnk",
"vim.exe", "vim.exe", "", NULL, NULL, ""},
{"gvim", "gvim.bat", "gVim.lnk",
"gvim.exe", "gvim.exe", "", NULL, NULL, ""},
{"evim", "evim.bat", "gVim Easy.lnk",
"evim.exe", "gvim.exe", "-y", NULL, NULL, ""},
{"view", "view.bat", "Vim Read-only.lnk",
"view.exe", "vim.exe", "-R", NULL, NULL, ""},
{"gview", "gview.bat", "gVim Read-only.lnk",
"gview.exe", "gvim.exe", "-R", NULL, NULL, ""},
{"vimdiff", "vimdiff.bat", "Vim Diff.lnk",
"vimdiff.exe","vim.exe", "-d", NULL, NULL, ""},
{"gvimdiff","gvimdiff.bat", "gVim Diff.lnk",
"gvimdiff.exe","gvim.exe", "-d", NULL, NULL, ""},
{"vimtutor","vimtutor.bat", "Vim tutor.lnk",
"vimtutor.bat", "vimtutor.bat", "", NULL, NULL, ""},
};
/* Uninstall key for vim.bat, etc. */
#define VIMBAT_UNINSTKEY "rem # uninstall key: " VIM_VERSION_NODOT " #"
#define ICON_COUNT 3
char *(icon_names[ICON_COUNT]) =
{"gVim " VIM_VERSION_SHORT,
"gVim Easy " VIM_VERSION_SHORT,
"gVim Read only " VIM_VERSION_SHORT};
char *(icon_link_names[ICON_COUNT]) =
{"gVim " VIM_VERSION_SHORT ".lnk",
"gVim Easy " VIM_VERSION_SHORT ".lnk",
"gVim Read only " VIM_VERSION_SHORT ".lnk"};
/* This is only used for dosinst.c. */
#if defined(DOSINST)
/*
* Run an external command and wait for it to finish.
*/
static void
run_command(char *cmd)
{
char *cmd_path;
char cmd_buf[BUFSIZE * 2 + 35];
char *p;
// On WinNT, 'start' is a shell built-in for cmd.exe rather than an
// executable (start.exe) like in Win9x.
cmd_path = searchpath_save("cmd.exe");
if (cmd_path != NULL)
{
// There is a cmd.exe, so this might be Windows NT. If it is,
// we need to call cmd.exe explicitly. If it is a later OS,
// calling cmd.exe won't hurt if it is present.
// Also, "start" on NT expects a window title argument.
// Replace the slashes with backslashes.
while ((p = strchr(cmd_path, '/')) != NULL)
*p = '\\';
sprintf(cmd_buf, "%s /c start \"vimcmd\" /wait %s", cmd_path, cmd);
free(cmd_path);
}
else
{
// No cmd.exe, just make the call and let the system handle it.
sprintf(cmd_buf, "start /w %s", cmd);
}
system(cmd_buf);
}
#endif
/*
* Append a backslash to "name" if there isn't one yet.
*/
void
add_pathsep(char *name)
{
int len = strlen(name);
if (len > 0 && name[len - 1] != '\\' && name[len - 1] != '/')
strcat(name, "\\");
}
/*
* The normal chdir() does not change the default drive. This one does.
*/
int
change_drive(int drive)
{
char temp[3] = "-:";
temp[0] = (char)(drive + 'A' - 1);
return !SetCurrentDirectory(temp);
}
/*
* Change directory to "path".
* Return 0 for success, -1 for failure.
*/
int
mch_chdir(char *path)
{
if (path[0] == NUL) // just checking...
return 0;
if (path[1] == ':') // has a drive name
{
if (change_drive(mytoupper(path[0]) - 'A' + 1))
return -1; // invalid drive name
path += 2;
}
if (*path == NUL) // drive name only
return 0;
return chdir(path); // let the normal chdir() do the rest
}
/*
* Expand the executable name into a full path name.
*/
static char *
my_fullpath(char *buf, char *fname UNUSED, int len)
{
// Only GetModuleFileName() will get the long file name path.
// GetFullPathName() may still use the short (FAT) name.
DWORD len_read = GetModuleFileName(NULL, buf, (size_t)len);
return (len_read > 0 && len_read < (DWORD)len) ? buf : NULL;
}
/*
* Remove the tail from a file or directory name.
* Puts a NUL on the last '/' or '\'.
*/
static void
remove_tail(char *path)
{
int i;
for (i = strlen(path) - 1; i > 0; --i)
if (path[i] == '/' || path[i] == '\\')
{
path[i] = NUL;
break;
}
}
char installdir[MAX_PATH-9]; // top of the installation dir, where the
// install.exe is located, E.g.:
// "c:\vim\vim60"
int runtimeidx; // index in installdir[] where "vim60" starts
char *sysdrive; // system drive or "c:\"
/*
* Setup for using this program.
* Sets "installdir[]".
*/
static void
do_inits(char **argv)
{
// Find out the full path of our executable.
if (my_fullpath(installdir, argv[0], sizeof(installdir)) == NULL)
{
printf("ERROR: Cannot get name of executable\n");
myexit(1);
}
// remove the tail, the executable name "install.exe"
remove_tail(installdir);
// change to the installdir
mch_chdir(installdir);
// Find the system drive. Only used for searching the Vim executable, not
// very important.
sysdrive = getenv("SYSTEMDRIVE");
if (sysdrive == NULL || *sysdrive == NUL)
sysdrive = "C:\\";
}
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