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resbin.c
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/* resbin.c -- manipulate the Windows binary resource format.
Copyright (C) 1997-2019 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
Rewritten by Kai Tietz, Onevision.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA. */
/* This file contains functions to convert between the binary resource
format and the internal structures that we want to use. The same
binary resource format is used in both res and COFF files. */
#include "sysdep.h"
#include "bfd.h"
#include "bucomm.h"
#include "libiberty.h"
#include "windres.h"
/* Local functions. */
static void toosmall (const char *);
static unichar *get_unicode (windres_bfd *, const bfd_byte *, rc_uint_type, rc_uint_type *);
static int get_resid (windres_bfd *, rc_res_id *, const bfd_byte *, rc_uint_type);
static rc_res_resource *bin_to_res_generic (windres_bfd *, enum rc_res_type,
const bfd_byte *, rc_uint_type);
static rc_res_resource *bin_to_res_cursor (windres_bfd *, const bfd_byte *, rc_uint_type);
static rc_res_resource *bin_to_res_menu (windres_bfd *,const bfd_byte *, rc_uint_type);
static rc_menuitem *bin_to_res_menuitems (windres_bfd *, const bfd_byte *, rc_uint_type,
rc_uint_type *);
static rc_menuitem *bin_to_res_menuexitems (windres_bfd *, const bfd_byte *, rc_uint_type,
rc_uint_type *);
static rc_res_resource *bin_to_res_dialog (windres_bfd *, const bfd_byte *, rc_uint_type);
static rc_res_resource *bin_to_res_string (windres_bfd *,const bfd_byte *, rc_uint_type);
static rc_res_resource *bin_to_res_fontdir (windres_bfd *, const bfd_byte *, rc_uint_type);
static rc_res_resource *bin_to_res_accelerators (windres_bfd *, const bfd_byte *, rc_uint_type);
static rc_res_resource *bin_to_res_rcdata (windres_bfd *, const bfd_byte *, rc_uint_type, int);
static rc_res_resource *bin_to_res_group_cursor (windres_bfd *, const bfd_byte *, rc_uint_type);
static rc_res_resource *bin_to_res_group_icon (windres_bfd *, const bfd_byte *, rc_uint_type);
static rc_res_resource *bin_to_res_version (windres_bfd *, const bfd_byte *, rc_uint_type);
static rc_res_resource *bin_to_res_userdata (windres_bfd *, const bfd_byte *, rc_uint_type);
static rc_res_resource *bin_to_res_toolbar (windres_bfd *, const bfd_byte *, rc_uint_type);
static void get_version_header (windres_bfd *, const bfd_byte *, rc_uint_type, const char *,
unichar **, rc_uint_type *, rc_uint_type *, rc_uint_type *,
rc_uint_type *);
/* Given a resource type ID, a pointer to data, a length, return a
rc_res_resource structure which represents that resource. The caller
is responsible for initializing the res_info and coff_info fields
of the returned structure. */
rc_res_resource *
bin_to_res (windres_bfd *wrbfd, rc_res_id type, const bfd_byte *data,
rc_uint_type length)
{
if (type.named)
return bin_to_res_userdata (wrbfd, data, length);
else
{
switch (type.u.id)
{
default:
return bin_to_res_userdata (wrbfd, data, length);
case RT_CURSOR:
return bin_to_res_cursor (wrbfd, data, length);
case RT_BITMAP:
return bin_to_res_generic (wrbfd, RES_TYPE_BITMAP, data, length);
case RT_ICON:
return bin_to_res_generic (wrbfd, RES_TYPE_ICON, data, length);
case RT_MENU:
return bin_to_res_menu (wrbfd, data, length);
case RT_DIALOG:
return bin_to_res_dialog (wrbfd, data, length);
case RT_STRING:
return bin_to_res_string (wrbfd, data, length);
case RT_FONTDIR:
return bin_to_res_fontdir (wrbfd, data, length);
case RT_FONT:
return bin_to_res_generic (wrbfd, RES_TYPE_FONT, data, length);
case RT_ACCELERATOR:
return bin_to_res_accelerators (wrbfd, data, length);
case RT_RCDATA:
return bin_to_res_rcdata (wrbfd, data, length, RES_TYPE_RCDATA);
case RT_MESSAGETABLE:
return bin_to_res_generic (wrbfd, RES_TYPE_MESSAGETABLE, data, length);
case RT_GROUP_CURSOR:
return bin_to_res_group_cursor (wrbfd, data, length);
case RT_GROUP_ICON:
return bin_to_res_group_icon (wrbfd, data, length);
case RT_VERSION:
return bin_to_res_version (wrbfd, data, length);
case RT_TOOLBAR:
return bin_to_res_toolbar (wrbfd, data, length);
}
}
}
/* Give an error if the binary data is too small. */
static void
toosmall (const char *msg)
{
fatal (_("%s: not enough binary data"), msg);
}
/* Swap in a NULL terminated unicode string. */
static unichar *
get_unicode (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length,
rc_uint_type *retlen)
{
rc_uint_type c, i;
unichar *ret;
c = 0;
while (1)
{
if (length < c * 2 + 2)
toosmall (_("null terminated unicode string"));
if (windres_get_16 (wrbfd, data + c * 2, 2) == 0)
break;
++c;
}
ret = (unichar *) res_alloc ((c + 1) * sizeof (unichar));
for (i = 0; i < c; i++)
ret[i] = windres_get_16 (wrbfd, data + i * 2, 2);
ret[i] = 0;
if (retlen != NULL)
*retlen = c;
return ret;
}
/* Get a resource identifier. This returns the number of bytes used. */
static int
get_resid (windres_bfd *wrbfd, rc_res_id *id, const bfd_byte *data,
rc_uint_type length)
{
rc_uint_type first;
if (length < 2)
toosmall (_("resource ID"));
first = windres_get_16 (wrbfd, data, 2);
if (first == 0xffff)
{
if (length < 4)
toosmall (_("resource ID"));
id->named = 0;
id->u.id = windres_get_16 (wrbfd, data + 2, 2);
return 4;
}
else
{
id->named = 1;
id->u.n.name = get_unicode (wrbfd, data, length, &id->u.n.length);
return id->u.n.length * 2 + 2;
}
}
/* Convert a resource which just stores uninterpreted data from
binary. */
rc_res_resource *
bin_to_res_generic (windres_bfd *wrbfd ATTRIBUTE_UNUSED, enum rc_res_type type,
const bfd_byte *data, rc_uint_type length)
{
rc_res_resource *r;
r = (rc_res_resource *) res_alloc (sizeof (rc_res_resource));
r->type = type;
r->u.data.data = data;
r->u.data.length = length;
return r;
}
/* Convert a cursor resource from binary. */
rc_res_resource *
bin_to_res_cursor (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length)
{
rc_cursor *c;
rc_res_resource *r;
if (length < 4)
toosmall (_("cursor"));
c = (rc_cursor *) res_alloc (sizeof (rc_cursor));
c->xhotspot = windres_get_16 (wrbfd, data, 2);
c->yhotspot = windres_get_16 (wrbfd, data + 2, 2);
c->length = length - 4;
c->data = data + 4;
r = (rc_res_resource *) res_alloc (sizeof *r);
r->type = RES_TYPE_CURSOR;
r->u.cursor = c;
return r;
}
/* Convert a menu resource from binary. */
rc_res_resource *
bin_to_res_menu (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length)
{
rc_res_resource *r;
rc_menu *m;
rc_uint_type version, got;
r = (rc_res_resource *) res_alloc (sizeof *r);
r->type = RES_TYPE_MENU;
m = (rc_menu *) res_alloc (sizeof (rc_menu));
r->u.menu = m;
if (length < 2)
toosmall (_("menu header"));
version = windres_get_16 (wrbfd, data, 2);
if (version == 0)
{
if (length < 4)
toosmall (_("menu header"));
m->help = 0;
m->items = bin_to_res_menuitems (wrbfd, data + 4, length - 4, &got);
}
else if (version == 1)
{
rc_uint_type offset;
if (length < 8)
toosmall (_("menuex header"));
m->help = windres_get_32 (wrbfd, data + 4, 4);
offset = windres_get_16 (wrbfd, data + 2, 2);
if (offset + 4 >= length)
toosmall (_("menuex offset"));
m->items = bin_to_res_menuexitems (wrbfd, data + 4 + offset,
length - (4 + offset), &got);
}
else
fatal (_("unsupported menu version %d"), (int) version);
return r;
}
/* Convert menu items from binary. */
static rc_menuitem *
bin_to_res_menuitems (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length,
rc_uint_type *got)
{
rc_menuitem *first, **pp;
first = NULL;
pp = &first;
*got = 0;
while (length > 0)
{
rc_uint_type flags, slen, itemlen;
rc_uint_type stroff;
rc_menuitem *mi;
if (length < 4)
toosmall (_("menuitem header"));
mi = (rc_menuitem *) res_alloc (sizeof *mi);
mi->state = 0;
mi->help = 0;
flags = windres_get_16 (wrbfd, data, 2);
mi->type = flags &~ (MENUITEM_POPUP | MENUITEM_ENDMENU);
if ((flags & MENUITEM_POPUP) == 0)
stroff = 4;
else
stroff = 2;
if (length < stroff + 2)
toosmall (_("menuitem header"));
if (windres_get_16 (wrbfd, data + stroff, 2) == 0)
{
slen = 0;
mi->text = NULL;
}
else
mi->text = get_unicode (wrbfd, data + stroff, length - stroff, &slen);
itemlen = stroff + slen * 2 + 2;
if ((flags & MENUITEM_POPUP) == 0)
{
mi->popup = NULL;
mi->id = windres_get_16 (wrbfd, data + 2, 2);
}
else
{
rc_uint_type subread;
mi->id = 0;
mi->popup = bin_to_res_menuitems (wrbfd, data + itemlen, length - itemlen,
&subread);
itemlen += subread;
}
mi->next = NULL;
*pp = mi;
pp = &mi->next;
data += itemlen;
length -= itemlen;
*got += itemlen;
if ((flags & MENUITEM_ENDMENU) != 0)
return first;
}
return first;
}
/* Convert menuex items from binary. */
static rc_menuitem *
bin_to_res_menuexitems (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length,
rc_uint_type *got)
{
rc_menuitem *first, **pp;
first = NULL;
pp = &first;
*got = 0;
while (length > 0)
{
rc_uint_type flags, slen;
rc_uint_type itemlen;
rc_menuitem *mi;
if (length < 16)
toosmall (_("menuitem header"));
mi = (rc_menuitem *) res_alloc (sizeof (rc_menuitem));
mi->type = windres_get_32 (wrbfd, data, 4);
mi->state = windres_get_32 (wrbfd, data + 4, 4);
mi->id = windres_get_32 (wrbfd, data + 8, 4);
flags = windres_get_16 (wrbfd, data + 12, 2);
if (windres_get_16 (wrbfd, data + 14, 2) == 0)
{
slen = 0;
mi->text = NULL;
}
else
mi->text = get_unicode (wrbfd, data + 14, length - 14, &slen);
itemlen = 14 + slen * 2 + 2;
itemlen = (itemlen + 3) &~ 3;
if ((flags & 1) == 0)
{
mi->popup = NULL;
mi->help = 0;
}
else
{
rc_uint_type subread;
if (length < itemlen + 4)
toosmall (_("menuitem"));
mi->help = windres_get_32 (wrbfd, data + itemlen, 4);
itemlen += 4;
mi->popup = bin_to_res_menuexitems (wrbfd, data + itemlen,
length - itemlen, &subread);
itemlen += subread;
}
mi->next = NULL;
*pp = mi;
pp = &mi->next;
data += itemlen;
length -= itemlen;
*got += itemlen;
if ((flags & 0x80) != 0)
return first;
}
return first;
}
/* Convert a dialog resource from binary. */
static rc_res_resource *
bin_to_res_dialog (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length)
{
rc_uint_type signature;
rc_dialog *d;
rc_uint_type c, sublen, i;
rc_uint_type off;
rc_dialog_control **pp;
rc_res_resource *r;
if (length < 18)
toosmall (_("dialog header"));
d = (rc_dialog *) res_alloc (sizeof (rc_dialog));
signature = windres_get_16 (wrbfd, data + 2, 2);
if (signature != 0xffff)
{
d->ex = NULL;
d->style = windres_get_32 (wrbfd, data, 4);
d->exstyle = windres_get_32 (wrbfd, data + 4, 4);
off = 8;
}
else
{
int version;
version = windres_get_16 (wrbfd, data, 2);
if (version != 1)
fatal (_("unexpected DIALOGEX version %d"), version);
d->ex = (rc_dialog_ex *) res_alloc (sizeof (rc_dialog_ex));
d->ex->help = windres_get_32 (wrbfd, data + 4, 4);
d->exstyle = windres_get_32 (wrbfd, data + 8, 4);
d->style = windres_get_32 (wrbfd, data + 12, 4);
off = 16;
}
if (length < off + 10)
toosmall (_("dialog header"));
c = windres_get_16 (wrbfd, data + off, 2);
d->x = windres_get_16 (wrbfd, data + off + 2, 2);
d->y = windres_get_16 (wrbfd, data + off + 4, 2);
d->width = windres_get_16 (wrbfd, data + off + 6, 2);
d->height = windres_get_16 (wrbfd, data + off + 8, 2);
off += 10;
sublen = get_resid (wrbfd, &d->menu, data + off, length - off);
off += sublen;
sublen = get_resid (wrbfd, &d->class, data + off, length - off);
off += sublen;
d->caption = get_unicode (wrbfd, data + off, length - off, &sublen);
off += sublen * 2 + 2;
if (sublen == 0)
d->caption = NULL;
if ((d->style & DS_SETFONT) == 0)
{
d->pointsize = 0;
d->font = NULL;
if (d->ex != NULL)
{
d->ex->weight = 0;
d->ex->italic = 0;
d->ex->charset = 1; /* Default charset. */
}
}
else
{
if (length < off + 2)
toosmall (_("dialog font point size"));
d->pointsize = windres_get_16 (wrbfd, data + off, 2);
off += 2;
if (d->ex != NULL)
{
if (length < off + 4)
toosmall (_("dialogex font information"));
d->ex->weight = windres_get_16 (wrbfd, data + off, 2);
d->ex->italic = windres_get_8 (wrbfd, data + off + 2, 1);
d->ex->charset = windres_get_8 (wrbfd, data + off + 3, 1);
off += 4;
}
d->font = get_unicode (wrbfd, data + off, length - off, &sublen);
off += sublen * 2 + 2;
}
d->controls = NULL;
pp = &d->controls;
for (i = 0; i < c; i++)
{
rc_dialog_control *dc;
int datalen;
off = (off + 3) &~ 3;
dc = (rc_dialog_control *) res_alloc (sizeof (rc_dialog_control));
if (d->ex == NULL)
{
if (length < off + 8)
toosmall (_("dialog control"));
dc->style = windres_get_32 (wrbfd, data + off, 4);
dc->exstyle = windres_get_32 (wrbfd, data + off + 4, 4);
dc->help = 0;
off += 8;
}
else
{
if (length < off + 12)
toosmall (_("dialogex control"));
dc->help = windres_get_32 (wrbfd, data + off, 4);
dc->exstyle = windres_get_32 (wrbfd, data + off + 4, 4);
dc->style = windres_get_32 (wrbfd, data + off + 8, 4);
off += 12;
}
if (length < off + (d->ex != NULL ? 2 : 0) + 10)
toosmall (_("dialog control"));
dc->x = windres_get_16 (wrbfd, data + off, 2);
dc->y = windres_get_16 (wrbfd, data + off + 2, 2);
dc->width = windres_get_16 (wrbfd, data + off + 4, 2);
dc->height = windres_get_16 (wrbfd, data + off + 6, 2);
if (d->ex != NULL)
dc->id = windres_get_32 (wrbfd, data + off + 8, 4);
else
dc->id = windres_get_16 (wrbfd, data + off + 8, 2);
off += 10 + (d->ex != NULL ? 2 : 0);
sublen = get_resid (wrbfd, &dc->class, data + off, length - off);
off += sublen;
sublen = get_resid (wrbfd, &dc->text, data + off, length - off);
off += sublen;
if (length < off + 2)
toosmall (_("dialog control end"));
datalen = windres_get_16 (wrbfd, data + off, 2);
off += 2;
if (datalen == 0)
dc->data = NULL;
else
{
if (length < off + datalen)
toosmall (_("dialog control data"));
dc->data = ((rc_rcdata_item *)
res_alloc (sizeof (rc_rcdata_item)));
dc->data->next = NULL;
dc->data->type = RCDATA_BUFFER;
dc->data->u.buffer.length = datalen;
dc->data->u.buffer.data = data + off;
off += datalen;
}
dc->next = NULL;
*pp = dc;
pp = &dc->next;
}
r = (rc_res_resource *) res_alloc (sizeof *r);
r->type = RES_TYPE_DIALOG;
r->u.dialog = d;
return r;
}
/* Convert a stringtable resource from binary. */
static rc_res_resource *
bin_to_res_string (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length)
{
rc_stringtable *st;
int i;
rc_res_resource *r;
st = (rc_stringtable *) res_alloc (sizeof (rc_stringtable));
for (i = 0; i < 16; i++)
{
unsigned int slen;
if (length < 2)
toosmall (_("stringtable string length"));
slen = windres_get_16 (wrbfd, data, 2);
st->strings[i].length = slen;
if (slen > 0)
{
unichar *s;
unsigned int j;
if (length < 2 + 2 * slen)
toosmall (_("stringtable string"));
s = (unichar *) res_alloc (slen * sizeof (unichar));
st->strings[i].string = s;
for (j = 0; j < slen; j++)
s[j] = windres_get_16 (wrbfd, data + 2 + j * 2, 2);
}
data += 2 + 2 * slen;
length -= 2 + 2 * slen;
}
r = (rc_res_resource *) res_alloc (sizeof *r);
r->type = RES_TYPE_STRINGTABLE;
r->u.stringtable = st;
return r;
}
/* Convert a fontdir resource from binary. */
static rc_res_resource *
bin_to_res_fontdir (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length)
{
rc_uint_type c, i;
rc_fontdir *first, **pp;
rc_res_resource *r;
if (length < 2)
toosmall (_("fontdir header"));
c = windres_get_16 (wrbfd, data, 2);
first = NULL;
pp = &first;
for (i = 0; i < c; i++)
{
const struct bin_fontdir_item *bfi;
rc_fontdir *fd;
unsigned int off;
if (length < 56)
toosmall (_("fontdir"));
bfi = (const struct bin_fontdir_item *) data;
fd = (rc_fontdir *) res_alloc (sizeof *fd);
fd->index = windres_get_16 (wrbfd, bfi->index, 2);
/* To work out the length of the fontdir data, we must get the
length of the device name and face name strings, even though
we don't store them in the rc_fontdir. The
documentation says that these are NULL terminated char
strings, not Unicode strings. */
off = 56;
while (off < length && data[off] != '\0')
++off;
if (off >= length)
toosmall (_("fontdir device name"));
++off;
while (off < length && data[off] != '\0')
++off;
if (off >= length)
toosmall (_("fontdir face name"));
++off;
fd->length = off;
fd->data = data;
fd->next = NULL;
*pp = fd;
pp = &fd->next;
/* The documentation does not indicate that any rounding is
required. */
data += off;
length -= off;
}
r = (rc_res_resource *) res_alloc (sizeof *r);
r->type = RES_TYPE_FONTDIR;
r->u.fontdir = first;
return r;
}
/* Convert an accelerators resource from binary. */
static rc_res_resource *
bin_to_res_accelerators (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length)
{
rc_accelerator *first, **pp;
rc_res_resource *r;
first = NULL;
pp = &first;
while (1)
{
rc_accelerator *a;
if (length < 8)
toosmall (_("accelerator"));
a = (rc_accelerator *) res_alloc (sizeof (rc_accelerator));
a->flags = windres_get_16 (wrbfd, data, 2);
a->key = windres_get_16 (wrbfd, data + 2, 2);
a->id = windres_get_16 (wrbfd, data + 4, 2);
a->next = NULL;
*pp = a;
pp = &a->next;
if ((a->flags & ACC_LAST) != 0)
break;
data += 8;
length -= 8;
}
r = (rc_res_resource *) res_alloc (sizeof (rc_res_resource));
r->type = RES_TYPE_ACCELERATOR;
r->u.acc = first;
return r;
}
/* Convert an rcdata resource from binary. */
static rc_res_resource *
bin_to_res_rcdata (windres_bfd *wrbfd ATTRIBUTE_UNUSED, const bfd_byte *data,
rc_uint_type length, int rctyp)
{
rc_rcdata_item *ri;
rc_res_resource *r;
ri = (rc_rcdata_item *) res_alloc (sizeof (rc_rcdata_item));
ri->next = NULL;
ri->type = RCDATA_BUFFER;
ri->u.buffer.length = length;
ri->u.buffer.data = data;
r = (rc_res_resource *) res_alloc (sizeof *r);
r->type = rctyp;
r->u.rcdata = ri;
return r;
}
/* Convert a group cursor resource from binary. */
static rc_res_resource *
bin_to_res_group_cursor (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length)
{
int type, c, i;
rc_group_cursor *first, **pp;
rc_res_resource *r;
if (length < 6)
toosmall (_("group cursor header"));
type = windres_get_16 (wrbfd, data + 2, 2);
if (type != 2)
fatal (_("unexpected group cursor type %d"), type);
c = windres_get_16 (wrbfd, data + 4, 2);
data += 6;
length -= 6;
first = NULL;
pp = &first;
for (i = 0; i < c; i++)
{
rc_group_cursor *gc;
if (length < 14)
toosmall (_("group cursor"));
gc = (rc_group_cursor *) res_alloc (sizeof *gc);
gc->width = windres_get_16 (wrbfd, data, 2);
gc->height = windres_get_16 (wrbfd, data + 2, 2);
gc->planes = windres_get_16 (wrbfd, data + 4, 2);
gc->bits = windres_get_16 (wrbfd, data + 6, 2);
gc->bytes = windres_get_32 (wrbfd, data + 8, 4);
gc->index = windres_get_16 (wrbfd, data + 12, 2);
gc->next = NULL;
*pp = gc;
pp = &gc->next;
data += 14;
length -= 14;
}
r = (rc_res_resource *) res_alloc (sizeof (rc_res_resource));
r->type = RES_TYPE_GROUP_CURSOR;
r->u.group_cursor = first;
return r;
}
/* Convert a group icon resource from binary. */
static rc_res_resource *
bin_to_res_group_icon (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length)
{
int type, c, i;
rc_group_icon *first, **pp;
rc_res_resource *r;
if (length < 6)
toosmall (_("group icon header"));
type = windres_get_16 (wrbfd, data + 2, 2);
if (type != 1)
fatal (_("unexpected group icon type %d"), type);
c = windres_get_16 (wrbfd, data + 4, 2);
data += 6;
length -= 6;
first = NULL;
pp = &first;
for (i = 0; i < c; i++)
{
rc_group_icon *gi;
if (length < 14)
toosmall (_("group icon"));
gi = (rc_group_icon *) res_alloc (sizeof (rc_group_icon));
gi->width = windres_get_8 (wrbfd, data, 1);
gi->height = windres_get_8 (wrbfd, data + 1, 1);
gi->colors = windres_get_8 (wrbfd, data + 2, 1);
gi->planes = windres_get_16 (wrbfd, data + 4, 2);
gi->bits = windres_get_16 (wrbfd, data + 6, 2);
gi->bytes = windres_get_32 (wrbfd, data + 8, 4);
gi->index = windres_get_16 (wrbfd, data + 12, 2);
gi->next = NULL;
*pp = gi;
pp = &gi->next;
data += 14;
length -= 14;
}
r = (rc_res_resource *) res_alloc (sizeof *r);
r->type = RES_TYPE_GROUP_ICON;
r->u.group_icon = first;
return r;
}
/* Extract data from a version header. If KEY is not NULL, then the
key must be KEY; otherwise, the key is returned in *PKEY. This
sets *LEN to the total length, *VALLEN to the value length, *TYPE
to the type, and *OFF to the offset to the children. */
static void
get_version_header (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length,
const char *key, unichar **pkey,
rc_uint_type *len, rc_uint_type *vallen, rc_uint_type *type,
rc_uint_type *off)
{
if (length < 8)
toosmall (key);
*len = (windres_get_16 (wrbfd, data, 2) + 3) & ~3;
*vallen = windres_get_16 (wrbfd, data + 2, 2);
*type = windres_get_16 (wrbfd, data + 4, 2);
*off = 6;
length -= 6;
data += 6;
if (key == NULL)
{
rc_uint_type sublen;
*pkey = get_unicode (wrbfd, data, length, &sublen);
*off += (sublen + 1) * sizeof (unichar);
}
else
{
while (1)
{
if (length < 2)
toosmall (key);
if (windres_get_16 (wrbfd, data, 2) != (bfd_byte) *key)
fatal (_("unexpected version string"));
*off += 2;
length -= 2;
data += 2;
if (*key == '\0')
break;
++key;
}
}
*off = (*off + 3) &~ 3;
}
/* Convert a version resource from binary. */
static rc_res_resource *
bin_to_res_version (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type length)
{
rc_uint_type verlen, vallen, type, off;
rc_fixed_versioninfo *fi;
rc_ver_info *first, **pp;
rc_versioninfo *v;
rc_res_resource *r;
get_version_header (wrbfd, data, length, "VS_VERSION_INFO",
(unichar **) NULL, &verlen, &vallen, &type, &off);
/* PR 17512: The verlen field does not include padding length. */
if (verlen > length)
fatal (_("version length %lu greater than resource length %lu"),
(unsigned long) verlen, (unsigned long) length);
if (type != 0)
fatal (_("unexpected version type %d"), (int) type);
data += off;
length -= off;
if (vallen == 0)
fi = NULL;
else
{
unsigned long signature, fiv;
if (vallen != 52)
fatal (_("unexpected fixed version information length %ld"), (long) vallen);
if (length < 52)
toosmall (_("fixed version info"));
signature = windres_get_32 (wrbfd, data, 4);
if (signature != 0xfeef04bd)
fatal (_("unexpected fixed version signature %lu"), signature);
fiv = windres_get_32 (wrbfd, data + 4, 4);
if (fiv != 0 && fiv != 0x10000)
fatal (_("unexpected fixed version info version %lu"), fiv);
fi = (rc_fixed_versioninfo *) res_alloc (sizeof (rc_fixed_versioninfo));
fi->file_version_ms = windres_get_32 (wrbfd, data + 8, 4);
fi->file_version_ls = windres_get_32 (wrbfd, data + 12, 4);
fi->product_version_ms = windres_get_32 (wrbfd, data + 16, 4);
fi->product_version_ls = windres_get_32 (wrbfd, data + 20, 4);
fi->file_flags_mask = windres_get_32 (wrbfd, data + 24, 4);
fi->file_flags = windres_get_32 (wrbfd, data + 28, 4);