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-rw-r--r--winsup/cygwin/path.cc181
1 files changed, 16 insertions, 165 deletions
diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc
index 9183762cc..33ff8435f 100644
--- a/winsup/cygwin/path.cc
+++ b/winsup/cygwin/path.cc
@@ -74,9 +74,7 @@ details. */
#include "registry.h"
#include "security.h"
#include <assert.h>
-#include <shlobj.h>
-#include <objidl.h>
-#include <objbase.h>
+#include "shortcut.h"
static int normalize_win32_path (const char *src, char *dst);
static void slashify (const char *src, char *dst, int trailing_slash_p);
@@ -94,8 +92,6 @@ struct symlink_info
int is_symlink;
int error;
symlink_info (): known_suffix (NULL), contents (buf + MAX_PATH + 1) {}
- int check_shortcut (const char *, DWORD, HANDLE);
- int check_sysfile (const char *, DWORD, HANDLE);
int check (const char *path, const suffix_info *suffixes);
};
@@ -2195,35 +2191,6 @@ endmntent (FILE *)
/********************** Symbolic Link Support **************************/
-/* The header written to a shortcut by Cygwin or U/WIN. */
-#define SHORTCUT_HDR_SIZE 76
-static char shortcut_header[SHORTCUT_HDR_SIZE];
-static BOOL shortcut_initalized = FALSE;
-
-static void
-create_shortcut_header (void)
-{
- if (!shortcut_initalized)
- {
- shortcut_header[0] = 'L';
- shortcut_header[4] = '\001';
- shortcut_header[5] = '\024';
- shortcut_header[6] = '\002';
- shortcut_header[12] = '\300';
- shortcut_header[19] = 'F';
- shortcut_header[20] = '\f';
- shortcut_header[60] = '\001';
- shortcut_initalized = TRUE;
- }
-}
-
-static BOOL
-cmp_shortcut_header (const char *file_header)
-{
- create_shortcut_header ();
- return memcmp (shortcut_header, file_header, SHORTCUT_HDR_SIZE);
-}
-
/* Create a symlink from FROMPATH to TOPATH. */
extern "C"
@@ -2362,127 +2329,9 @@ next_suffix (char *ext_here, const suffix_info *&suffixes)
return 0;
}
-int
-symlink_info::check_shortcut (const char *path, DWORD fileattr, HANDLE h)
-{
- HRESULT hres;
- IShellLink *psl = NULL;
- IPersistFile *ppf = NULL;
- WCHAR wc_path[MAX_PATH];
- char full_path[MAX_PATH];
- WIN32_FIND_DATA wfd;
- DWORD len = 0;
- int res = 0;
-
- /* Initialize COM library. */
- CoInitialize (NULL);
-
- /* Get a pointer to the IShellLink interface. */
- hres = CoCreateInstance (CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
- IID_IShellLink, (void **)&psl);
- if (FAILED (hres))
- {
- debug_printf ("CoCreateInstance failed");
- goto close_it;
- }
- /* Get a pointer to the IPersistFile interface. */
- hres = psl->QueryInterface (IID_IPersistFile, (void **)&ppf);
- if (FAILED (hres))
- {
- debug_printf ("QueryInterface failed");
- goto close_it;
- }
- /* Load the shortcut. */
- MultiByteToWideChar(CP_ACP, 0, path, -1, wc_path, MAX_PATH);
- hres = ppf->Load (wc_path, STGM_READ);
- if (FAILED (hres))
- {
- debug_printf ("Load failed");
- goto close_it;
- }
- /* Try the description (containing a POSIX path) first. */
- if (fileattr & FILE_ATTRIBUTE_READONLY)
- {
- /* An additional check is needed to prove if it's a shortcut
- really created by Cygwin or U/WIN. */
- char file_header[SHORTCUT_HDR_SIZE];
- DWORD got;
-
- if (! ReadFile (h, file_header, SHORTCUT_HDR_SIZE, &got, 0))
- {
- debug_printf ("ReadFile failed");
- error = EIO;
- goto close_it_dont_set_error;
- }
- if (got == SHORTCUT_HDR_SIZE && !cmp_shortcut_header (file_header))
- {
- hres = psl->GetDescription (contents, MAX_PATH);
- if (FAILED (hres))
- {
- debug_printf ("GetDescription failed");
- goto close_it;
- }
- len = strlen (contents);
- }
- }
- /* No description or not R/O: Check the "official" path. */
- if (len == 0)
- {
- /* Convert to full path (easy way) */
- if ((path[0] == '\\' && path[1] == '\\')
- || (_toupper (path[0]) >= 'A' && _toupper (path[0]) <= 'Z'
- && path[1] == ':'))
- len = 0;
- else
- {
- len = GetCurrentDirectory (MAX_PATH, full_path);
- if (path[0] == '\\')
- len = 2;
- else if (full_path[len - 1] != '\\')
- strcpy (full_path + len++, "\\");
- }
- strcpy (full_path + len, path);
- debug_printf ("full_path = <%s>", full_path);
- /* Set relative path inside of IShellLink interface. */
- hres = psl->SetRelativePath (full_path, 0);
- if (FAILED (hres))
- {
- debug_printf ("SetRelativePath failed");
- goto close_it;
- }
- /* Get the path to the shortcut target. */
- hres = psl->GetPath (contents, MAX_PATH, &wfd, 0);
- if (FAILED(hres))
- {
- debug_printf ("GetPath failed");
- goto close_it;
- }
- }
- /* It's a symlink. */
- pflags = PATH_SYMLINK;
- res = strlen (contents);
-
-close_it:
- if (FAILED (hres))
- error = geterrno_from_win_error (HRESULT_CODE (hres), EACCES);
-
-close_it_dont_set_error:
- /* Release the pointer to IPersistFile. */
- if (ppf)
- ppf->Release();
- /* Release the pointer to IShellLink. */
- if (psl)
- psl->Release();
- /* Uninitialize COM library. */
- CoUninitialize ();
-
- syscall_printf ("%d = symlink.check_shortcut (%s, %s) (%p)",
- res, path, contents, pflags);
- return res;
-}
-
-int
-symlink_info::check_sysfile (const char *path, DWORD fileattr, HANDLE h)
+static int
+check_sysfile (const char *path, DWORD fileattr, HANDLE h,
+ char *contents, int *error, unsigned *pflags)
{
char cookie_buf[sizeof (SYMLINK_COOKIE) - 1];
DWORD got;
@@ -2491,19 +2340,19 @@ symlink_info::check_sysfile (const char *path, DWORD fileattr, HANDLE h)
if (! ReadFile (h, cookie_buf, sizeof (cookie_buf), &got, 0))
{
debug_printf ("ReadFile1 failed");
- error = EIO;
+ *error = EIO;
}
else if (got == sizeof (cookie_buf)
&& memcmp (cookie_buf, SYMLINK_COOKIE, sizeof (cookie_buf)) == 0)
{
/* It's a symlink. */
- pflags = PATH_SYMLINK;
+ *pflags = PATH_SYMLINK;
res = ReadFile (h, contents, MAX_PATH + 1, &got, 0);
if (!res)
{
debug_printf ("ReadFile2 failed");
- error = EIO;
+ *error = EIO;
}
else
{
@@ -2521,15 +2370,13 @@ symlink_info::check_sysfile (const char *path, DWORD fileattr, HANDLE h)
}
else if (got == sizeof (cookie_buf)
&& memcmp (cookie_buf, SOCKET_COOKIE, sizeof (cookie_buf)) == 0)
- pflags |= PATH_SOCKET;
+ *pflags |= PATH_SOCKET;
else
{
/* Not a symlink, see if executable. */
- if (!(pflags & PATH_ALL_EXEC) && has_exec_chars (cookie_buf, got))
- pflags |= PATH_EXEC;
+ if (!(*pflags & PATH_ALL_EXEC) && has_exec_chars (cookie_buf, got))
+ *pflags |= PATH_EXEC;
}
- syscall_printf ("%d = symlink.check_sysfile (%s, %s) (%p)",
- res, path, contents, pflags);
return res;
}
@@ -2615,12 +2462,16 @@ symlink_info::check (const char *in_path, const suffix_info *suffixes)
res = -1;
if (h == INVALID_HANDLE_VALUE)
goto file_not_symlink;
- else if (sym_check == 1 && !(res = check_shortcut (path, fileattr, h)))
+ else if (sym_check == 1
+ && !(res = check_shortcut (path, fileattr, h,
+ contents, &error, &pflags)))
{
CloseHandle (h);
goto file_not_symlink;
}
- else if (sym_check == 2 && !(res = check_sysfile (path, fileattr, h)))
+ else if (sym_check == 2 &&
+ !(res = check_sysfile (path, fileattr, h,
+ contents, &error, &pflags)))
{
CloseHandle (h);
goto file_not_symlink;
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-30 23:22:40 +0000