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Files are not valid installation folders

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git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@3142 212acab6-be3b-0410-9dea-997c60f758d6
This commit is contained in:
kichik 2003-11-14 21:08:51 +00:00
parent ff2edfc360
commit 343f7c9408
3 changed files with 67 additions and 48 deletions
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35
Source/exehead/util.c
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@ -181,16 +181,35 @@ char * NSISCALL skip_root(char *path)
int NSISCALL is_valid_instpath(char *s)
{
int ret = 0;
char *p = skip_root(s);
if (p && ((*p && *p != '\\') || !(g_flags & CH_FLAGS_NO_ROOT_DIR)))
static char tmp[NSIS_MAX_STRLEN];
char *root;
mystrcpy(tmp, s);
root = skip_root(tmp);
if (!root)
return 0;
if ((g_flags & CH_FLAGS_NO_ROOT_DIR) && (!*root || *root == '\\'))
return 0;
while (mystrlen(tmp) > root - tmp)
{
char pb = *p;
*p = 0;
ret = GetFileAttributes(s) != (DWORD)-1;
*p = pb;
WIN32_FIND_DATA *fd = file_exists(tmp);
// if the directory bit not set then it's a file, which is not a valid inst dir...
// GetFileAttributes is not used because it doesn't work with certain files (error 32)
// as for concers of the user using * or ?, that's invalid anyway...
if (fd && !(fd->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
return 0;
trimslashtoend(tmp);
}
return ret;
// if the root drive exists
if (GetFileAttributes(tmp) == (DWORD)-1)
return 0;
return 1;
}
char * NSISCALL mystrstr(char *a, char *b)