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common:iobuf: Avoid losing bits of HANDLE on Windows 64-bit. 

* common/iobuf.c (translate_file_handle): Change the return type to
gnupg_fd_t, not to lose the bits for HANDLE silently.
(do_iobuf_fdopen): Use the type gnupg_fd_t for the first argument.
(do_open): Use do_iobuf_fdopen instead of iobuf_fdopen.
(iobuf_fdopen, iobuf_fdopen_nc): Follow the change of API.

--

GnuPG-bug-id: 6508
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2023-06-30 15:56:43 +09:00
parent 6049d61991
commit 250fff0f6e
No known key found for this signature in database
GPG Key ID: 640114AF89DE6054
1 changed files with 20 additions and 19 deletions
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39
common/iobuf.c
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@ -166,7 +166,9 @@ block_filter_ctx_t;
/* Local prototypes. */
static int underflow (iobuf_t a, int clear_pending_eof);
static int underflow_target (iobuf_t a, int clear_pending_eof, size_t target);
static int translate_file_handle (int fd, int for_write);
static gnupg_fd_t translate_file_handle (int fd, int for_write);
static iobuf_t do_iobuf_fdopen (gnupg_fd_t fp, const char *mode, int keep_open);
/* Sends any pending data to the filter's FILTER function. Note: this
works on the filter and not on the whole pipeline. That is,
@ -1444,8 +1446,8 @@ do_open (const char *fname, int special_filenames,
return NULL;
else if (special_filenames
&& (fd = check_special_filename (fname, 0, 1)) != -1)
return iobuf_fdopen (translate_file_handle (fd, use == IOBUF_INPUT ? 0 : 1),
opentype);
return do_iobuf_fdopen (translate_file_handle (fd, use == IOBUF_INPUT
? 0 : 1), opentype, 0);
else
{
if (use == IOBUF_INPUT)
@ -1493,22 +1495,19 @@ iobuf_openrw (const char *fname)
static iobuf_t
do_iobuf_fdopen (int fd, const char *mode, int keep_open)
do_iobuf_fdopen (gnupg_fd_t fp, const char *mode, int keep_open)
{
iobuf_t a;
gnupg_fd_t fp;
file_filter_ctx_t *fcx;
size_t len = 0;
fp = INT2FD (fd);
a = iobuf_alloc (strchr (mode, 'w') ? IOBUF_OUTPUT : IOBUF_INPUT,
iobuf_buffer_size);
fcx = xmalloc (sizeof *fcx + 20);
fcx->fp = fp;
fcx->print_only_name = 1;
fcx->keep_open = keep_open;
sprintf (fcx->fname, "[fd %d]", fd);
sprintf (fcx->fname, "[fd %d]", (int)(intptr_t)fp);
a->filter = file_filter;
a->filter_ov = fcx;
file_filter (fcx, IOBUFCTRL_INIT, NULL, NULL, &len);
@ -1523,13 +1522,15 @@ do_iobuf_fdopen (int fd, const char *mode, int keep_open)
iobuf_t
iobuf_fdopen (int fd, const char *mode)
{
return do_iobuf_fdopen (fd, mode, 0);
gnupg_fd_t fp = INT2FD (fd);
return do_iobuf_fdopen (fp, mode, 0);
}
iobuf_t
iobuf_fdopen_nc (int fd, const char *mode)
{
return do_iobuf_fdopen (fd, mode, 1);
gnupg_fd_t fp = INT2FD (fd);
return do_iobuf_fdopen (fp, mode, 1);
}
@ -2985,34 +2986,34 @@ iobuf_read_line (iobuf_t a, byte ** addr_of_buffer,
return nbytes;
}
static int
static gnupg_fd_t
translate_file_handle (int fd, int for_write)
{
#if defined(HAVE_W32_SYSTEM)
{
int x;
gnupg_fd_t x;
(void)for_write;
if (fd == 0)
x = (int) GetStdHandle (STD_INPUT_HANDLE);
x = GetStdHandle (STD_INPUT_HANDLE);
else if (fd == 1)
x = (int) GetStdHandle (STD_OUTPUT_HANDLE);
x = GetStdHandle (STD_OUTPUT_HANDLE);
else if (fd == 2)
x = (int) GetStdHandle (STD_ERROR_HANDLE);
x = GetStdHandle (STD_ERROR_HANDLE);
else
x = fd;
x = (gnupg_fd_t)(intptr_t)fd;
if (x == -1)
if (x == INVALID_HANDLE_VALUE)
log_debug ("GetStdHandle(%d) failed: ec=%d\n",
fd, (int) GetLastError ());
fd = x;
return x;
}
#else
(void)for_write;
#endif
return fd;
#endif
}