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grub2/grub-core/normal/term.c
Peter Jones f725fa7cb2 calloc: Use calloc() at most places 
This modifies most of the places we do some form of:

  X = malloc(Y * Z);

to use calloc(Y, Z) instead.

Among other issues, this fixes:
  - allocation of integer overflow in grub_png_decode_image_header()
    reported by Chris Coulson,
  - allocation of integer overflow in luks_recover_key()
    reported by Chris Coulson,
  - allocation of integer overflow in grub_lvm_detect()
    reported by Chris Coulson.

Fixes: CVE-2020-14308

Signed-off-by: Peter Jones <pjones@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2020-07-29 16:55:47 +02:00

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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2005,2007,2008,2009 Free Software Foundation, Inc.
*
* GRUB 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.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/term.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/file.h>
#include <grub/dl.h>
#include <grub/env.h>
#include <grub/normal.h>
#include <grub/charset.h>
#include <grub/i18n.h>
struct term_state
{
struct term_state *next;
struct grub_unicode_glyph *backlog_glyphs;
const grub_uint32_t *backlog_ucs4;
int backlog_fixed_tab;
grub_size_t backlog_len;
int bidi_stack_depth;
grub_uint8_t bidi_stack[GRUB_BIDI_MAX_EXPLICIT_LEVEL];
int invalid_pushes;
void *free;
int num_lines;
char *term_name;
};
static int
print_ucs4_real (const grub_uint32_t * str,
const grub_uint32_t * last_position,
int margin_left, int margin_right,
struct grub_term_output *term, int backlog,
int dry_run, int fixed_tab, unsigned skip_lines,
unsigned max_lines,
grub_uint32_t contchar, int fill_right,
struct grub_term_pos *pos);
static struct term_state *term_states = NULL;
/* If the more pager is active. */
static int grub_more;
static void
putcode_real (grub_uint32_t code, struct grub_term_output *term, int fixed_tab);
void
grub_normal_reset_more (void)
{
static struct term_state *state;
for (state = term_states; state; state = state->next)
state->num_lines = 0;
}
static void
print_more (void)
{
char key;
struct grub_term_coordinate *pos;
grub_term_output_t term;
grub_uint32_t *unicode_str, *unicode_last_position;
/* TRANSLATORS: This has to fit on one line. It's ok to include few
words but don't write poems. */
grub_utf8_to_ucs4_alloc (_("--MORE--"), &unicode_str,
&unicode_last_position);
if (!unicode_str)
{
grub_errno = GRUB_ERR_NONE;
return;
}
pos = grub_term_save_pos ();
grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
FOR_ACTIVE_TERM_OUTPUTS(term)
{
grub_print_ucs4 (unicode_str, unicode_last_position, 0, 0, term);
}
grub_setcolorstate (GRUB_TERM_COLOR_NORMAL);
grub_free (unicode_str);
key = grub_getkey ();
/* Remove the message. */
grub_term_restore_pos (pos);
FOR_ACTIVE_TERM_OUTPUTS(term)
grub_print_spaces (term, 8);
grub_term_restore_pos (pos);
grub_free (pos);
/* Scroll one line or an entire page, depending on the key. */
if (key == '\r' || key =='\n')
{
static struct term_state *state;
for (state = term_states; state; state = state->next)
state->num_lines--;
}
else
grub_normal_reset_more ();
}
void
grub_set_more (int onoff)
{
grub_more = !!onoff;
grub_normal_reset_more ();
}
enum
{
GRUB_CP437_UPDOWNARROW = 0x12,
GRUB_CP437_UPARROW = 0x18,
GRUB_CP437_DOWNARROW = 0x19,
GRUB_CP437_RIGHTARROW = 0x1a,
GRUB_CP437_LEFTARROW = 0x1b,
GRUB_CP437_VLINE = 0xb3,
GRUB_CP437_CORNER_UR = 0xbf,
GRUB_CP437_CORNER_LL = 0xc0,
GRUB_CP437_HLINE = 0xc4,
GRUB_CP437_CORNER_LR = 0xd9,
GRUB_CP437_CORNER_UL = 0xda,
};
static grub_uint32_t
map_code (grub_uint32_t in, struct grub_term_output *term)
{
if (in <= 0x7f)
return in;
switch (term->flags & GRUB_TERM_CODE_TYPE_MASK)
{
case GRUB_TERM_CODE_TYPE_CP437:
switch (in)
{
case GRUB_UNICODE_LEFTARROW:
return GRUB_CP437_LEFTARROW;
case GRUB_UNICODE_UPARROW:
return GRUB_CP437_UPARROW;
case GRUB_UNICODE_UPDOWNARROW:
return GRUB_CP437_UPDOWNARROW;
case GRUB_UNICODE_RIGHTARROW:
return GRUB_CP437_RIGHTARROW;
case GRUB_UNICODE_DOWNARROW:
return GRUB_CP437_DOWNARROW;
case GRUB_UNICODE_HLINE:
return GRUB_CP437_HLINE;
case GRUB_UNICODE_VLINE:
return GRUB_CP437_VLINE;
case GRUB_UNICODE_CORNER_UL:
return GRUB_CP437_CORNER_UL;
case GRUB_UNICODE_CORNER_UR:
return GRUB_CP437_CORNER_UR;
case GRUB_UNICODE_CORNER_LL:
return GRUB_CP437_CORNER_LL;
case GRUB_UNICODE_CORNER_LR:
return GRUB_CP437_CORNER_LR;
}
return '?';
case GRUB_TERM_CODE_TYPE_ASCII:
/* Better than nothing. */
switch (in)
{
case GRUB_UNICODE_LEFTARROW:
return '<';
case GRUB_UNICODE_UPARROW:
return '^';
case GRUB_UNICODE_RIGHTARROW:
return '>';
case GRUB_UNICODE_DOWNARROW:
return 'v';
case GRUB_UNICODE_HLINE:
return '-';
case GRUB_UNICODE_VLINE:
return '|';
case GRUB_UNICODE_CORNER_UL:
case GRUB_UNICODE_CORNER_UR:
case GRUB_UNICODE_CORNER_LL:
case GRUB_UNICODE_CORNER_LR:
return '+';
}
return '?';
}
return in;
}
void
grub_puts_terminal (const char *str, struct grub_term_output *term)
{
grub_uint32_t *unicode_str, *unicode_last_position;
grub_error_push ();
grub_utf8_to_ucs4_alloc (str, &unicode_str,
&unicode_last_position);
grub_error_pop ();
if (!unicode_str)
{
for (; *str; str++)
{
struct grub_unicode_glyph c =
{
.variant = 0,
.attributes = 0,
.ncomb = 0,
.estimated_width = 1,
.base = *str
};
FOR_ACTIVE_TERM_OUTPUTS(term)
{
(term->putchar) (term, &c);
}
if (*str == '\n')
{
c.base = '\r';
FOR_ACTIVE_TERM_OUTPUTS(term)
{
(term->putchar) (term, &c);
}
}
}
return;
}
print_ucs4_real (unicode_str, unicode_last_position, 0, 0, term,
0, 0, 0, 0, -1, 0, 0, 0);
grub_free (unicode_str);
}
struct grub_term_coordinate *
grub_term_save_pos (void)
{
struct grub_term_output *cur;
unsigned cnt = 0;
struct grub_term_coordinate *ret, *ptr;
FOR_ACTIVE_TERM_OUTPUTS(cur)
cnt++;
ret = grub_calloc (cnt, sizeof (ret[0]));
if (!ret)
return NULL;
ptr = ret;
FOR_ACTIVE_TERM_OUTPUTS(cur)
*ptr++ = grub_term_getxy (cur);
return ret;
}
void
grub_term_restore_pos (struct grub_term_coordinate *pos)
{
struct grub_term_output *cur;
struct grub_term_coordinate *ptr = pos;
if (!pos)
return;
FOR_ACTIVE_TERM_OUTPUTS(cur)
{
grub_term_gotoxy (cur, *ptr);
ptr++;
}
}
static void
grub_terminal_autoload_free (void)
{
struct grub_term_autoload *cur, *next;
unsigned i;
for (i = 0; i < 2; i++)
for (cur = i ? grub_term_input_autoload : grub_term_output_autoload;
cur; cur = next)
{
next = cur->next;
grub_free (cur->name);
grub_free (cur->modname);
grub_free (cur);
}
grub_term_input_autoload = NULL;
grub_term_output_autoload = NULL;
}
/* Read the file terminal.lst for auto-loading. */
void
read_terminal_list (const char *prefix)
{
char *filename;
grub_file_t file;
char *buf = NULL;
if (!prefix)
{
grub_errno = GRUB_ERR_NONE;
return;
}
filename = grub_xasprintf ("%s/" GRUB_TARGET_CPU "-" GRUB_PLATFORM
"/terminal.lst", prefix);
if (!filename)
{
grub_errno = GRUB_ERR_NONE;
return;
}
file = grub_file_open (filename, GRUB_FILE_TYPE_GRUB_MODULE_LIST);
grub_free (filename);
if (!file)
{
grub_errno = GRUB_ERR_NONE;
return;
}
/* Override previous terminal.lst. */
grub_terminal_autoload_free ();
for (;; grub_free (buf))
{
char *p, *name;
struct grub_term_autoload *cur;
struct grub_term_autoload **target = NULL;
buf = grub_file_getline (file);
if (! buf)
break;
p = buf;
while (grub_isspace (p[0]))
p++;
switch (p[0])
{
case 'i':
target = &grub_term_input_autoload;
break;
case 'o':
target = &grub_term_output_autoload;
break;
}
if (!target)
continue;
name = p + 1;
p = grub_strchr (name, ':');
if (! p)
continue;
*p = 0;
p++;
while (*p == ' ' || *p == '\t')
p++;
cur = grub_malloc (sizeof (*cur));
if (!cur)
{
grub_errno = GRUB_ERR_NONE;
continue;
}
cur->name = grub_strdup (name);
if (! cur->name)
{
grub_errno = GRUB_ERR_NONE;
grub_free (cur);
continue;
}
cur->modname = grub_strdup (p);
if (! cur->modname)
{
grub_errno = GRUB_ERR_NONE;
grub_free (cur->name);
grub_free (cur);
continue;
}
cur->next = *target;
*target = cur;
}
grub_file_close (file);
grub_errno = GRUB_ERR_NONE;
}
static void
putglyph (const struct grub_unicode_glyph *c, struct grub_term_output *term,
int fixed_tab)
{
struct grub_unicode_glyph c2 =
{
.variant = 0,
.attributes = 0,
.ncomb = 0,
.estimated_width = 1
};
if (c->base == '\t' && fixed_tab)
{
int n;
n = GRUB_TERM_TAB_WIDTH;
c2.base = ' ';
while (n--)
(term->putchar) (term, &c2);
return;
}
if (c->base == '\t' && term->getxy)
{
int n;
n = GRUB_TERM_TAB_WIDTH - ((term->getxy (term).x)
% GRUB_TERM_TAB_WIDTH);
c2.base = ' ';
while (n--)
(term->putchar) (term, &c2);
return;
}
if ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
== GRUB_TERM_CODE_TYPE_UTF8_LOGICAL
|| (term->flags & GRUB_TERM_CODE_TYPE_MASK)
== GRUB_TERM_CODE_TYPE_UTF8_VISUAL)
{
int i;
c2.estimated_width = grub_term_getcharwidth (term, c);
for (i = -1; i < (int) c->ncomb; i++)
{
grub_uint8_t u8[20], *ptr;
grub_uint32_t code;
if (i == -1)
{
code = c->base;
if ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
== GRUB_TERM_CODE_TYPE_UTF8_VISUAL)
{
if ((c->attributes & GRUB_UNICODE_GLYPH_ATTRIBUTE_MIRROR))
code = grub_unicode_mirror_code (code);
code = grub_unicode_shape_code (code, c->attributes);
}
}
else
code = grub_unicode_get_comb (c) [i].code;
grub_ucs4_to_utf8 (&code, 1, u8, sizeof (u8));
for (ptr = u8; *ptr; ptr++)
{
c2.base = *ptr;
(term->putchar) (term, &c2);
c2.estimated_width = 0;
}
}
c2.estimated_width = 1;
}
else
(term->putchar) (term, c);
if (c->base == '\n')
{
c2.base = '\r';
(term->putchar) (term, &c2);
}
}
static void
putcode_real (grub_uint32_t code, struct grub_term_output *term, int fixed_tab)
{
struct grub_unicode_glyph c =
{
.variant = 0,
.attributes = 0,
.ncomb = 0,
.estimated_width = 1
};
c.base = map_code (code, term);
putglyph (&c, term, fixed_tab);
}
/* Put a Unicode character. */
void
grub_putcode (grub_uint32_t code, struct grub_term_output *term)
{
/* Combining character by itself? */
if (grub_unicode_get_comb_type (code) != GRUB_UNICODE_COMB_NONE)
return;
putcode_real (code, term, 0);
}
static grub_ssize_t
get_maxwidth (struct grub_term_output *term,
int margin_left, int margin_right)
{
struct grub_unicode_glyph space_glyph = {
.base = ' ',
.variant = 0,
.attributes = 0,
.ncomb = 0,
};
return (grub_term_width (term)
- grub_term_getcharwidth (term, &space_glyph)
* (margin_left + margin_right) - 1);
}
static grub_ssize_t
get_startwidth (struct grub_term_output *term,
int margin_left)
{
return (term->getxy (term).x) - margin_left;
}
static void
fill_margin (struct grub_term_output *term, int r)
{
int sp = (term->getwh (term).x)
- (term->getxy (term).x) - r;
if (sp > 0)
grub_print_spaces (term, sp);
}
static int
print_ucs4_terminal (const grub_uint32_t * str,
const grub_uint32_t * last_position,
int margin_left, int margin_right,
struct grub_term_output *term,
struct term_state *state,
int dry_run, int fixed_tab, unsigned skip_lines,
unsigned max_lines,
grub_uint32_t contchar,
int primitive_wrap, int fill_right, struct grub_term_pos *pos)
{
const grub_uint32_t *ptr;
grub_ssize_t startwidth = dry_run ? 0 : get_startwidth (term, margin_left);
grub_ssize_t line_width = startwidth;
grub_ssize_t lastspacewidth = 0;
grub_ssize_t max_width = get_maxwidth (term, margin_left, margin_right);
const grub_uint32_t *line_start = str, *last_space = str - 1;
int lines = 0;
int i;
struct term_state local_state;
if (!state)
{
grub_memset (&local_state, 0, sizeof (local_state));
state = &local_state;
}
for (i = 0; i < state->bidi_stack_depth; i++)
putcode_real (state->bidi_stack[i] | (GRUB_UNICODE_LRE & ~0xff),
term, fixed_tab);
for (ptr = str; ptr < last_position; ptr++)
{
grub_ssize_t last_width = 0;
switch (*ptr)
{
case GRUB_UNICODE_LRE:
case GRUB_UNICODE_RLE:
case GRUB_UNICODE_LRO:
case GRUB_UNICODE_RLO:
if (state->bidi_stack_depth >= (int) ARRAY_SIZE (state->bidi_stack))
state->invalid_pushes++;
else
state->bidi_stack[state->bidi_stack_depth++] = *ptr;
break;
case GRUB_UNICODE_PDF:
if (state->invalid_pushes)
state->invalid_pushes--;
else if (state->bidi_stack_depth)
state->bidi_stack_depth--;
break;
}
if (grub_unicode_get_comb_type (*ptr) == GRUB_UNICODE_COMB_NONE)
{
struct grub_unicode_glyph c = {
.variant = 0,
.attributes = 0,
.ncomb = 0,
};
c.base = *ptr;
if (pos)
{
pos[ptr - str].x = line_width;
pos[ptr - str].y = lines;
pos[ptr - str].valid = 1;
}
line_width += last_width = grub_term_getcharwidth (term, &c);
}
if (*ptr == ' ' && !primitive_wrap)
{
lastspacewidth = line_width;
last_space = ptr;
}
if (line_width > max_width || *ptr == '\n')
{
const grub_uint32_t *ptr2;
int wasn = (*ptr == '\n');
if (wasn)
{
state->bidi_stack_depth = 0;
state->invalid_pushes = 0;
}
if (line_width > max_width && last_space > line_start)
ptr = last_space;
else if (line_width > max_width
&& line_start == str && line_width - lastspacewidth < max_width - 5)
{
ptr = str;
lastspacewidth = startwidth;
}
else
lastspacewidth = line_width - last_width;
lines++;
if (!skip_lines && !dry_run)
{
for (ptr2 = line_start; ptr2 < ptr; ptr2++)
{
/* Skip combining characters on non-UTF8 terminals. */
if ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
!= GRUB_TERM_CODE_TYPE_UTF8_LOGICAL
&& grub_unicode_get_comb_type (*ptr2)
!= GRUB_UNICODE_COMB_NONE)
continue;
putcode_real (*ptr2, term, fixed_tab);
}
if (!wasn && contchar)
putcode_real (contchar, term, fixed_tab);
if (fill_right)
fill_margin (term, margin_right);
if (!contchar || max_lines != 1)
grub_putcode ('\n', term);
if (state != &local_state && ++state->num_lines
>= (grub_ssize_t) grub_term_height (term) - 2)
{
state->backlog_ucs4 = (ptr == last_space || *ptr == '\n')
? ptr + 1 : ptr;
state->backlog_len = last_position - state->backlog_ucs4;
state->backlog_fixed_tab = fixed_tab;
return 1;
}
}
line_width -= lastspacewidth;
if (ptr == last_space || *ptr == '\n')
ptr++;
else if (pos)
{
pos[ptr - str].x = line_width - last_width;
pos[ptr - str].y = lines;
pos[ptr - str].valid = 1;
}
line_start = ptr;
if (skip_lines)
skip_lines--;
else if (max_lines != (unsigned) -1)
{
max_lines--;
if (!max_lines)
break;
}
if (!skip_lines && !dry_run)
{
if (!contchar)
grub_print_spaces (term, margin_left);
else
grub_term_gotoxy (term, (struct grub_term_coordinate)
{ margin_left, grub_term_getxy (term).y });
for (i = 0; i < state->bidi_stack_depth; i++)
putcode_real (state->bidi_stack[i] | (GRUB_UNICODE_LRE & ~0xff),
term, fixed_tab);
}
}
}
if (pos)
{
pos[ptr - str].x = line_width;
pos[ptr - str].y = lines;
pos[ptr - str].valid = 1;
}
if (line_start < last_position)
lines++;
if (!dry_run && !skip_lines && max_lines)
{
const grub_uint32_t *ptr2;
for (ptr2 = line_start; ptr2 < last_position; ptr2++)
{
/* Skip combining characters on non-UTF8 terminals. */
if ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
!= GRUB_TERM_CODE_TYPE_UTF8_LOGICAL
&& grub_unicode_get_comb_type (*ptr2)
!= GRUB_UNICODE_COMB_NONE)
continue;
putcode_real (*ptr2, term, fixed_tab);
}
if (fill_right)
fill_margin (term, margin_right);
}
return dry_run ? lines : 0;
}
static struct term_state *
find_term_state (struct grub_term_output *term)
{
struct term_state *state;
for (state = term_states; state; state = state->next)
if (grub_strcmp (state->term_name, term->name) == 0)
return state;
state = grub_zalloc (sizeof (*state));
if (!state)
{
grub_errno = GRUB_ERR_NONE;
return NULL;
}
state->term_name = grub_strdup (term->name);
state->next = term_states;
term_states = state;
return state;
}
static int
put_glyphs_terminal (struct grub_unicode_glyph *visual,
grub_ssize_t visual_len,
int margin_left, int margin_right,
struct grub_term_output *term,
struct term_state *state, int fixed_tab,
grub_uint32_t contchar,
int fill_right)
{
struct grub_unicode_glyph *visual_ptr;
int since_last_nl = 1;
for (visual_ptr = visual; visual_ptr < visual + visual_len; visual_ptr++)
{
if (visual_ptr->base == '\n' && fill_right)
fill_margin (term, margin_right);
putglyph (visual_ptr, term, fixed_tab);
since_last_nl++;
if (visual_ptr->base == '\n')
{
since_last_nl = 0;
if (state && ++state->num_lines
>= (grub_ssize_t) grub_term_height (term) - 2)
{
state->backlog_glyphs = visual_ptr + 1;
state->backlog_len = visual_len - (visual_ptr - visual) - 1;
state->backlog_fixed_tab = fixed_tab;
return 1;
}
if (!contchar)
grub_print_spaces (term, margin_left);
else
grub_term_gotoxy (term,
(struct grub_term_coordinate)
{ margin_left, grub_term_getxy (term).y });
}
grub_unicode_destroy_glyph (visual_ptr);
}
if (fill_right && since_last_nl)
fill_margin (term, margin_right);
return 0;
}
static int
print_backlog (struct grub_term_output *term,
int margin_left, int margin_right)
{
struct term_state *state = find_term_state (term);
if (!state)
return 0;
if (state->backlog_ucs4)
{
int ret;
ret = print_ucs4_terminal (state->backlog_ucs4,
state->backlog_ucs4 + state->backlog_len,
margin_left, margin_right, term, state, 0,
state->backlog_fixed_tab, 0, -1, 0, 0,
0, 0);
if (!ret)
{
grub_free (state->free);
state->free = NULL;
state->backlog_len = 0;
state->backlog_ucs4 = 0;
}
return ret;
}
if (state->backlog_glyphs)
{
int ret;
ret = put_glyphs_terminal (state->backlog_glyphs,
state->backlog_len,
margin_left, margin_right, term, state,
state->backlog_fixed_tab, 0, 0);
if (!ret)
{
grub_free (state->free);
state->free = NULL;
state->backlog_len = 0;
state->backlog_glyphs = 0;
}
return ret;
}
return 0;
}
static grub_size_t
getcharwidth (const struct grub_unicode_glyph *c, void *term)
{
return grub_term_getcharwidth (term, c);
}
static int
print_ucs4_real (const grub_uint32_t * str,
const grub_uint32_t * last_position,
int margin_left, int margin_right,
struct grub_term_output *term, int backlog,
int dry_run, int fixed_tab, unsigned skip_lines,
unsigned max_lines,
grub_uint32_t contchar, int fill_right,
struct grub_term_pos *pos)
{
struct term_state *state = NULL;
if (!dry_run)
{
struct grub_term_coordinate xy;
if (backlog)
state = find_term_state (term);
xy = term->getxy (term);
if (xy.x < margin_left)
{
if (!contchar)
grub_print_spaces (term, margin_left - xy.x);
else
grub_term_gotoxy (term, (struct grub_term_coordinate) {margin_left,
xy.y});
}
}
if ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
== GRUB_TERM_CODE_TYPE_VISUAL_GLYPHS
|| (term->flags & GRUB_TERM_CODE_TYPE_MASK)
== GRUB_TERM_CODE_TYPE_UTF8_VISUAL)
{
grub_ssize_t visual_len;
struct grub_unicode_glyph *visual;
grub_ssize_t visual_len_show;
struct grub_unicode_glyph *visual_show;
int ret;
struct grub_unicode_glyph *vptr;
visual_len = grub_bidi_logical_to_visual (str, last_position - str,
&visual, getcharwidth, term,
get_maxwidth (term,
margin_left,
margin_right),
dry_run ? 0 : get_startwidth (term,
margin_left),
contchar, pos, !!contchar);
if (visual_len < 0)
{
grub_print_error ();
return 0;
}
visual_show = visual;
for (; skip_lines && visual_show < visual + visual_len; visual_show++)
if (visual_show->base == '\n')
skip_lines--;
if (max_lines != (unsigned) -1)
{
for (vptr = visual_show;
max_lines && vptr < visual + visual_len; vptr++)
if (vptr->base == '\n')
max_lines--;
visual_len_show = vptr - visual_show;
}
else
visual_len_show = visual + visual_len - visual_show;
if (dry_run)
{
ret = 0;
for (vptr = visual_show; vptr < visual_show + visual_len_show; vptr++)
if (vptr->base == '\n')
ret++;
if (visual_len_show && visual[visual_len_show - 1].base != '\n')
ret++;
for (vptr = visual; vptr < visual + visual_len; vptr++)
grub_unicode_destroy_glyph (vptr);
grub_free (visual);
}
else
{
ret = put_glyphs_terminal (visual_show, visual_len_show, margin_left,
margin_right,
term, state, fixed_tab, contchar, fill_right);
if (!ret)
grub_free (visual);
else
state->free = visual;
}
return ret;
}
return print_ucs4_terminal (str, last_position, margin_left, margin_right,
term, state, dry_run, fixed_tab, skip_lines,
max_lines, contchar, !!contchar, fill_right, pos);
}
void
grub_print_ucs4_menu (const grub_uint32_t * str,
const grub_uint32_t * last_position,
int margin_left, int margin_right,
struct grub_term_output *term,
int skip_lines, int max_lines,
grub_uint32_t contchar,
struct grub_term_pos *pos)
{
print_ucs4_real (str, last_position, margin_left, margin_right,
term, 0, 0, 1, skip_lines, max_lines,
contchar, 1, pos);
}
void
grub_print_ucs4 (const grub_uint32_t * str,
const grub_uint32_t * last_position,
int margin_left, int margin_right,
struct grub_term_output *term)
{
print_ucs4_real (str, last_position, margin_left, margin_right,
term, 0, 0, 1, 0, -1, 0, 0, 0);
}
int
grub_ucs4_count_lines (const grub_uint32_t * str,
const grub_uint32_t * last_position,
int margin_left, int margin_right,
struct grub_term_output *term)
{
return print_ucs4_real (str, last_position, margin_left, margin_right,
term, 0, 1, 1, 0, -1, 0, 0, 0);
}
void
grub_xnputs (const char *str, grub_size_t msg_len)
{
grub_uint32_t *unicode_str = NULL, *unicode_last_position;
int backlog = 0;
grub_term_output_t term;
grub_error_push ();
unicode_str = grub_calloc (msg_len, sizeof (grub_uint32_t));
grub_error_pop ();
if (!unicode_str)
{
for (; msg_len--; str++, msg_len++)
{
struct grub_unicode_glyph c =
{
.variant = 0,
.attributes = 0,
.ncomb = 0,
.estimated_width = 1,
.base = *str
};
FOR_ACTIVE_TERM_OUTPUTS(term)
{
(term->putchar) (term, &c);
}
if (*str == '\n')
{
c.base = '\r';
FOR_ACTIVE_TERM_OUTPUTS(term)
{
(term->putchar) (term, &c);
}
}
}
return;
}
msg_len = grub_utf8_to_ucs4 (unicode_str, msg_len,
(grub_uint8_t *) str, -1, 0);
unicode_last_position = unicode_str + msg_len;
FOR_ACTIVE_TERM_OUTPUTS(term)
{
int cur;
cur = print_ucs4_real (unicode_str, unicode_last_position, 0, 0,
term, grub_more, 0, 0, 0, -1, 0, 0, 0);
if (cur)
backlog = 1;
}
while (backlog)
{
print_more ();
backlog = 0;
FOR_ACTIVE_TERM_OUTPUTS(term)
{
int cur;
cur = print_backlog (term, 0, 0);
if (cur)
backlog = 1;
}
}
grub_free (unicode_str);
}
void
grub_xputs_normal (const char *str)
{
grub_xnputs (str, grub_strlen (str));
}
void
grub_cls (void)
{
struct grub_term_output *term;
FOR_ACTIVE_TERM_OUTPUTS(term)
{
if ((term->flags & GRUB_TERM_DUMB) || (grub_env_get ("debug")))
{
grub_putcode ('\n', term);
grub_term_refresh (term);
}
else
(term->cls) (term);
}
}
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