busybox/console-tools/loadfont.c

/* vi: set sw=4 ts=4: */
/*
 * loadfont.c - Eugene Crosser & Andries Brouwer
 *
 * Version 0.96bb
 *
 * Loads the console font, and possibly the corresponding screen map(s).
 * (Adapted for busybox by Matej Vela.)
 *
 * Licensed under GPLv2, see file LICENSE in this tarball for details.
 */
#include "libbb.h"
#include <sys/kd.h>

#ifndef KDFONTOP
# define KDFONTOP 0x4B72
struct console_font_op {
	unsigned op;            /* KD_FONT_OP_* */
	unsigned flags;         /* KD_FONT_FLAG_* */
	unsigned width, height;
	unsigned charcount;
	unsigned char *data;    /* font data with height fixed to 32 */
};
# define KD_FONT_OP_SET          0  /* Set font */
# define KD_FONT_OP_GET          1  /* Get font */
# define KD_FONT_OP_SET_DEFAULT  2  /* Set font to default, data points to name / NULL */
# define KD_FONT_OP_COPY         3  /* Copy from another console */
# define KD_FONT_FLAG_OLD        0x80000000 /* Invoked via old interface */
# define KD_FONT_FLAG_DONT_RECALC 1 /* Don't call adjust_height() */
                                   /* (Used internally for PIO_FONT support) */
#endif /* KDFONTOP */


enum {
	PSF1_MAGIC0 = 0x36,
	PSF1_MAGIC1 = 0x04,
	PSF1_MODE512 = 0x01,
	PSF1_MODEHASTAB = 0x02,
	PSF1_MODEHASSEQ = 0x04,
	PSF1_MAXMODE = 0x05,
	PSF1_STARTSEQ = 0xfffe,
	PSF1_SEPARATOR = 0xffff,
};

struct psf1_header {
	unsigned char magic[2];         /* Magic number */
	unsigned char mode;             /* PSF font mode */
	unsigned char charsize;         /* Character size */
};

#define psf1h(x) ((struct psf1_header*)(x))

#define PSF1_MAGIC_OK(x) ( \
     (x)->magic[0] == PSF1_MAGIC0 \
  && (x)->magic[1] == PSF1_MAGIC1 \
)

#if ENABLE_FEATURE_LOADFONT_PSF2
enum {
	PSF2_MAGIC0 = 0x72,
	PSF2_MAGIC1 = 0xb5,
	PSF2_MAGIC2 = 0x4a,
	PSF2_MAGIC3 = 0x86,
	PSF2_HAS_UNICODE_TABLE = 0x01,
	PSF2_MAXVERSION = 0,
	PSF2_STARTSEQ = 0xfe,
	PSF2_SEPARATOR = 0xff
};

struct psf2_header {
	unsigned char magic[4];
	unsigned int version;
	unsigned int headersize;    /* offset of bitmaps in file */
	unsigned int flags;
	unsigned int length;        /* number of glyphs */
	unsigned int charsize;      /* number of bytes for each character */
	unsigned int height;        /* max dimensions of glyphs */
	unsigned int width;         /* charsize = height * ((width + 7) / 8) */
};

#define psf2h(x) ((struct psf2_header*)(x))

#define PSF2_MAGIC_OK(x) ( \
     (x)->magic[0] == PSF2_MAGIC0 \
  && (x)->magic[1] == PSF2_MAGIC1 \
  && (x)->magic[2] == PSF2_MAGIC2 \
  && (x)->magic[3] == PSF2_MAGIC3 \
)
#endif /* ENABLE_FEATURE_LOADFONT_PSF2 */


static void do_loadfont(int fd, unsigned char *inbuf, int height, int width, int charsize, int fontsize)
{
	unsigned char *buf;
	int charwidth = 32 * ((width+7)/8);
	int i;

	if (height < 1 || height > 32 || width < 1 || width > 32)
		bb_error_msg_and_die("bad character size %dx%d", height, width);

	buf = xzalloc(charwidth * ((fontsize < 128) ? 128 : fontsize));
	for (i = 0; i < fontsize; i++)
		memcpy(buf + (i*charwidth), inbuf + (i*charsize), charsize);

	{ /* KDFONTOP */
		struct console_font_op cfo;
		cfo.op = KD_FONT_OP_SET;
		cfo.flags = 0;
		cfo.width = width;
		cfo.height = height;
		cfo.charcount = fontsize;
		cfo.data = buf;
		xioctl(fd, KDFONTOP, &cfo);
	}

	free(buf);
}

/*
 * Format of the Unicode information:
 *
 * For each font position <uc>*<seq>*<term>
 * where <uc> is a 2-byte little endian Unicode value (PSF1)
 * or an UTF-8 coded value (PSF2),
 * <seq> = <ss><uc><uc>*, <ss> = psf1 ? 0xFFFE : 0xFE,
 * <term> = psf1 ? 0xFFFF : 0xFF.
 * and * denotes zero or more occurrences of the preceding item.
 *
 * Semantics:
 * The leading <uc>* part gives Unicode symbols that are all
 * represented by this font position. The following sequences
 * are sequences of Unicode symbols - probably a symbol
 * together with combining accents - also represented by
 * this font position.
 *
 * Example:
 * At the font position for a capital A-ring glyph, we
 * may have:
 *	00C5,212B,FFFE,0041,030A,FFFF
 * Some font positions may be described by sequences only,
 * namely when there is no precomposed Unicode value for the glyph.
 */
#if !ENABLE_FEATURE_LOADFONT_PSF2
#define do_loadtable(fd, inbuf, tailsz, fontsize, psf2) \
	do_loadtable(fd, inbuf, tailsz, fontsize)
#endif
static void do_loadtable(int fd, unsigned char *inbuf, int tailsz, int fontsize, int psf2)
{
#if !ENABLE_FEATURE_LOADFONT_PSF2
/* gcc 4.3.1 code size: */
# define psf2 0 /* +0 bytes */
//	const int psf2 = 0; /* +8 bytes */
//	enum { psf2 = 0 }; /* +13 bytes */
#endif
	struct unimapinit advice;
	struct unimapdesc ud;
	struct unipair *up;
	int ct = 0, maxct;
	int glyph;
	uint16_t unicode;

	maxct = tailsz;	/* more than enough */
	up = xmalloc(maxct * sizeof(*up));

	for (glyph = 0; glyph < fontsize; glyph++) {
		while (tailsz > 0) {
			if (!psf2) { /* PSF1 */
				unicode = (((uint16_t) inbuf[1]) << 8) + inbuf[0];
				tailsz -= 2;
				inbuf += 2;
				if (unicode == PSF1_SEPARATOR)
					break;
			} else { /* PSF2 */
#if ENABLE_FEATURE_LOADFONT_PSF2
				--tailsz;
				unicode = *inbuf++;
				if (unicode == PSF2_SEPARATOR) {
					break;
				} else if (unicode == PSF2_STARTSEQ) {
					bb_error_msg_and_die("unicode sequences not implemented");
				} else if (unicode >= 0xC0) {
					if (unicode >= 0xFC)
						unicode &= 0x01, maxct = 5;
					else if (unicode >= 0xF8)
						unicode &= 0x03, maxct = 4;
					else if (unicode >= 0xF0)
						unicode &= 0x07, maxct = 3;
					else if (unicode >= 0xE0)
						unicode &= 0x0F, maxct = 2;
					else
						unicode &= 0x1F, maxct = 1;
					do {
						if (tailsz <= 0 || *inbuf < 0x80 || *inbuf > 0xBF)
							bb_error_msg_and_die("illegal UTF-8 character");
						--tailsz;
						unicode = (unicode << 6) + (*inbuf++ & 0x3F);
					} while (--maxct > 0);
				} else if (unicode >= 0x80) {
					bb_error_msg_and_die("illegal UTF-8 character");
				}
#else
				return;
#endif
			}
			up[ct].unicode = unicode;
			up[ct].fontpos = glyph;
			ct++;
		}
	}

	/* Note: after PIO_UNIMAPCLR and before PIO_UNIMAP
	   this printf did not work on many kernels */

	advice.advised_hashsize = 0;
	advice.advised_hashstep = 0;
	advice.advised_hashlevel = 0;
	xioctl(fd, PIO_UNIMAPCLR, &advice);
	ud.entry_ct = ct;
	ud.entries = up;
	xioctl(fd, PIO_UNIMAP, &ud);
#undef psf2
}

static void do_load(int fd, unsigned char *buffer, size_t len)
{
	int height;
	int width = 8;
	int charsize;
	int fontsize = 256;
	int has_table = 0;
	unsigned char *font = buffer;
	unsigned char *table;

	if (len >= sizeof(struct psf1_header) && PSF1_MAGIC_OK(psf1h(buffer))) {
		if (psf1h(buffer)->mode > PSF1_MAXMODE)
			bb_error_msg_and_die("unsupported psf file mode");
		if (psf1h(buffer)->mode & PSF1_MODE512)
			fontsize = 512;
		if (psf1h(buffer)->mode & PSF1_MODEHASTAB)
			has_table = 1;
		height = charsize = psf1h(buffer)->charsize;
		font += sizeof(struct psf1_header);
	} else
#if ENABLE_FEATURE_LOADFONT_PSF2
	if (len >= sizeof(struct psf2_header) && PSF2_MAGIC_OK(psf2h(buffer))) {
		if (psf2h(buffer)->version > PSF2_MAXVERSION)
			bb_error_msg_and_die("unsupported psf file version");
		fontsize = psf2h(buffer)->length;
		if (psf2h(buffer)->flags & PSF2_HAS_UNICODE_TABLE)
			has_table = 2;
		charsize = psf2h(buffer)->charsize;
		height = psf2h(buffer)->height;
		width = psf2h(buffer)->width;
		font += psf2h(buffer)->headersize;
	} else
#endif
#if ENABLE_FEATURE_LOADFONT_RAW
	if (len == 9780) {	/* file with three code pages? */
		charsize = height = 16;
		font += 40;
	} else if ((len & 0377) == 0) {		/* bare font */
		charsize = height = len / 256;
	} else
#endif
	{
		bb_error_msg_and_die("input file: bad length or unsupported font type");
	}

#if !defined(PIO_FONTX) || defined(__sparc__)
	if (fontsize != 256)
		bb_error_msg_and_die("only fontsize 256 supported");
#endif

	table = font + fontsize * charsize;
	buffer += len;

	if (table > buffer || (!has_table && table != buffer))
		bb_error_msg_and_die("input file: bad length");

	do_loadfont(fd, font, height, width, charsize, fontsize);

	if (has_table)
		do_loadtable(fd, table, buffer - table, fontsize, has_table - 1);
}


#if ENABLE_LOADFONT
int loadfont_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int loadfont_main(int argc UNUSED_PARAM, char **argv)
{
	size_t len;
	unsigned char *buffer;

	// no arguments allowed!
	opt_complementary = "=0";
	getopt32(argv, "");

	/*
	 * We used to look at the length of the input file
	 * with stat(); now that we accept compressed files,
	 * just read the entire file.
	 */
	len = 32*1024; // can't be larger
	buffer = xmalloc_read(STDIN_FILENO, &len);
	// xmalloc_open_zipped_read_close(filename, &len);
	if (!buffer)
		bb_perror_msg_and_die("error reading input font");
	do_load(get_console_fd_or_die(), buffer, len);

	return EXIT_SUCCESS;
}
#endif

#if ENABLE_SETFONT

/*
kbd-1.12:

setfont [-O font+umap.orig] [-o font.orig] [-om cmap.orig]
[-ou umap.orig] [-N] [font.new ...] [-m cmap] [-u umap] [-C console]
[-hNN] [-v] [-V]

-h NN  Override font height
-o file
       Save previous font in file
-O file
       Save previous font and Unicode map in file
-om file
       Store console map in file
-ou file
       Save previous Unicode map in file
-m file
       Load console map or Unicode console map from file
-u file
       Load Unicode table describing the font from file
       Example:
       # cp866
       0x00-0x7f       idem
       #
       0x80    U+0410  # CYRILLIC CAPITAL LETTER A
       0x81    U+0411  # CYRILLIC CAPITAL LETTER BE
       0x82    U+0412  # CYRILLIC CAPITAL LETTER VE
-C console
       Set the font for the indicated console
-v     Verbose
-V     Version
*/

#if ENABLE_FEATURE_SETFONT_TEXTUAL_MAP
static int ctoi(char *s)
{
	if (s[0] == '\'' && s[1] != '\0' && s[2] == '\'' && s[3] == '\0')
		return s[1];
	// U+ means 0x
	if (s[0] == 'U' && s[1] == '+') {
		s[0] = '0';
		s[1] = 'x';
	}
	if (!isdigit(s[0]))
		return -1;
	return xstrtoul(s, 0);
}
#endif

int setfont_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int setfont_main(int argc UNUSED_PARAM, char **argv)
{
	size_t len;
	unsigned opts;
	int fd;
	unsigned char *buffer;
	char *mapfilename;
	const char *tty_name = CURRENT_TTY;

	opt_complementary = "=1";
	opts = getopt32(argv, "m:C:", &mapfilename, &tty_name);
	argv += optind;

	fd = xopen_nonblocking(tty_name);

	if (sizeof(CONFIG_DEFAULT_SETFONT_DIR) > 1) { // if not ""
		if (*argv[0] != '/') {
			// goto default fonts location. don't die if doesn't exist
			chdir(CONFIG_DEFAULT_SETFONT_DIR "/consolefonts");
		}
	}
	// load font
	len = 32*1024; // can't be larger
	buffer = xmalloc_open_zipped_read_close(*argv, &len);
	if (!buffer)
		bb_simple_perror_msg_and_die(*argv);
	do_load(fd, buffer, len);

	// load the screen map, if any
	if (opts & 1) { // -m
		unsigned mode = PIO_SCRNMAP;
		void *map;

		if (sizeof(CONFIG_DEFAULT_SETFONT_DIR) > 1) { // if not ""
			if (mapfilename[0] != '/') {
				// goto default keymaps location
				chdir(CONFIG_DEFAULT_SETFONT_DIR "/consoletrans");
			}
		}
		// fetch keymap
		map = xmalloc_open_zipped_read_close(mapfilename, &len);
		if (!map)
			bb_simple_perror_msg_and_die(mapfilename);
		// file size is 256 or 512 bytes? -> assume binary map
		if (len == E_TABSZ || len == 2*E_TABSZ) {
			if (len == 2*E_TABSZ)
				mode = PIO_UNISCRNMAP;
		}
#if ENABLE_FEATURE_SETFONT_TEXTUAL_MAP
		// assume textual Unicode console maps:
		// 0x00 U+0000  #  NULL (NUL)
		// 0x01 U+0001  #  START OF HEADING (SOH)
		// 0x02 U+0002  #  START OF TEXT (STX)
		// 0x03 U+0003  #  END OF TEXT (ETX)
		else {
			int i;
			char *token[2];
			parser_t *parser;

			if (ENABLE_FEATURE_CLEAN_UP)
				free(map);
			map = xmalloc(E_TABSZ * sizeof(unsigned short));

#define unicodes ((unsigned short *)map)
			// fill vanilla map
			for (i = 0; i < E_TABSZ; i++)
				unicodes[i] = 0xf000 + i;

			parser = config_open(mapfilename);
			while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL | PARSE_MIN_DIE)) {
				// parse code/value pair
				int a = ctoi(token[0]);
				int b = ctoi(token[1]);
				if (a < 0 || a >= E_TABSZ
				 || b < 0 || b > 65535
				) {
					bb_error_msg_and_die("map format");
				}
				// patch map
				unicodes[a] = b;
				// unicode character is met?
				if (b > 255)
					mode = PIO_UNISCRNMAP;
			}
			if (ENABLE_FEATURE_CLEAN_UP)
				config_close(parser);

			if (mode != PIO_UNISCRNMAP) {
#define asciis ((unsigned char *)map)
				for (i = 0; i < E_TABSZ; i++)
					asciis[i] = unicodes[i];
#undef asciis
			}
#undef unicodes
		}
#endif // ENABLE_FEATURE_SETFONT_TEXTUAL_MAP

		// do set screen map
		xioctl(fd, mode, map);

		if (ENABLE_FEATURE_CLEAN_UP)
			free(map);
	}

	return EXIT_SUCCESS;
}
#endif
1	niro	532	/* vi: set sw=4 ts=4: */
2			/*
3			* loadfont.c - Eugene Crosser & Andries Brouwer
4			*
5			* Version 0.96bb
6			*
7			* Loads the console font, and possibly the corresponding screen map(s).
8			* (Adapted for busybox by Matej Vela.)
9	niro	984	*
10			* Licensed under GPLv2, see file LICENSE in this tarball for details.
11	niro	532	*/
12	niro	816	#include "libbb.h"
13	niro	532	#include <sys/kd.h>
14
15	niro	816	#ifndef KDFONTOP
16	niro	1123	# define KDFONTOP 0x4B72
17	niro	816	struct console_font_op {
18			unsigned op; /* KD_FONT_OP_* */
19			unsigned flags; /* KD_FONT_FLAG_* */
20			unsigned width, height;
21			unsigned charcount;
22			unsigned char data; / font data with height fixed to 32 */
23			};
24	niro	1123	# define KD_FONT_OP_SET 0 /* Set font */
25			# define KD_FONT_OP_GET 1 /* Get font */
26			# define KD_FONT_OP_SET_DEFAULT 2 /* Set font to default, data points to name / NULL */
27			# define KD_FONT_OP_COPY 3 /* Copy from another console */
28			# define KD_FONT_FLAG_OLD 0x80000000 /* Invoked via old interface */
29			# define KD_FONT_FLAG_DONT_RECALC 1 /* Don't call adjust_height() */
30	niro	816	/* (Used internally for PIO_FONT support) */
31			#endif /* KDFONTOP */
32
33
34	niro	532	enum {
35	niro	1123	PSF1_MAGIC0 = 0x36,
36			PSF1_MAGIC1 = 0x04,
37			PSF1_MODE512 = 0x01,
38			PSF1_MODEHASTAB = 0x02,
39			PSF1_MODEHASSEQ = 0x04,
40			PSF1_MAXMODE = 0x05,
41			PSF1_STARTSEQ = 0xfffe,
42			PSF1_SEPARATOR = 0xffff,
43	niro	532	};
44
45	niro	1123	struct psf1_header {
46			unsigned char magic[2]; /* Magic number */
47	niro	816	unsigned char mode; /* PSF font mode */
48			unsigned char charsize; /* Character size */
49	niro	532	};
50
51	niro	1123	#define psf1h(x) ((struct psf1_header*)(x))
52	niro	532
53	niro	1123	#define PSF1_MAGIC_OK(x) ( \
54			(x)->magic[0] == PSF1_MAGIC0 \
55			&& (x)->magic[1] == PSF1_MAGIC1 \
56			)
57
58			#if ENABLE_FEATURE_LOADFONT_PSF2
59			enum {
60			PSF2_MAGIC0 = 0x72,
61			PSF2_MAGIC1 = 0xb5,
62			PSF2_MAGIC2 = 0x4a,
63			PSF2_MAGIC3 = 0x86,
64			PSF2_HAS_UNICODE_TABLE = 0x01,
65			PSF2_MAXVERSION = 0,
66			PSF2_STARTSEQ = 0xfe,
67			PSF2_SEPARATOR = 0xff
68			};
69
70			struct psf2_header {
71			unsigned char magic[4];
72			unsigned int version;
73			unsigned int headersize; /* offset of bitmaps in file */
74			unsigned int flags;
75			unsigned int length; /* number of glyphs */
76			unsigned int charsize; /* number of bytes for each character */
77			unsigned int height; /* max dimensions of glyphs */
78			unsigned int width; /* charsize = height * ((width + 7) / 8) */
79			};
80
81			#define psf2h(x) ((struct psf2_header*)(x))
82
83			#define PSF2_MAGIC_OK(x) ( \
84			(x)->magic[0] == PSF2_MAGIC0 \
85			&& (x)->magic[1] == PSF2_MAGIC1 \
86			&& (x)->magic[2] == PSF2_MAGIC2 \
87			&& (x)->magic[3] == PSF2_MAGIC3 \
88			)
89			#endif /* ENABLE_FEATURE_LOADFONT_PSF2 */
90
91
92			static void do_loadfont(int fd, unsigned char *inbuf, int height, int width, int charsize, int fontsize)
93	niro	532	{
94	niro	1123	unsigned char *buf;
95			int charwidth = 32 * ((width+7)/8);
96	niro	532	int i;
97
98	niro	1123	if (height < 1 \|\| height > 32 \|\| width < 1 \|\| width > 32)
99			bb_error_msg_and_die("bad character size %dx%d", height, width);
100	niro	532
101	niro	1123	buf = xzalloc(charwidth * ((fontsize < 128) ? 128 : fontsize));
102	niro	532	for (i = 0; i < fontsize; i++)
103	niro	1123	memcpy(buf + (icharwidth), inbuf + (icharsize), charsize);
104	niro	532
105	niro	816	{ /* KDFONTOP */
106			struct console_font_op cfo;
107			cfo.op = KD_FONT_OP_SET;
108			cfo.flags = 0;
109	niro	1123	cfo.width = width;
110			cfo.height = height;
111	niro	816	cfo.charcount = fontsize;
112	niro	1123	cfo.data = buf;
113	niro	816	xioctl(fd, KDFONTOP, &cfo);
114			}
115
116			free(buf);
117	niro	532	}
118
119	niro	1123	/*
120			* Format of the Unicode information:
121			*
122			* For each font position <uc><seq><term>
123			* where <uc> is a 2-byte little endian Unicode value (PSF1)
124			* or an UTF-8 coded value (PSF2),
125			* <seq> = <ss><uc><uc>*, <ss> = psf1 ? 0xFFFE : 0xFE,
126			* <term> = psf1 ? 0xFFFF : 0xFF.
127			* and * denotes zero or more occurrences of the preceding item.
128			*
129			* Semantics:
130			* The leading <uc>* part gives Unicode symbols that are all
131			* represented by this font position. The following sequences
132			* are sequences of Unicode symbols - probably a symbol
133			* together with combining accents - also represented by
134			* this font position.
135			*
136			* Example:
137			* At the font position for a capital A-ring glyph, we
138			* may have:
139			* 00C5,212B,FFFE,0041,030A,FFFF
140			* Some font positions may be described by sequences only,
141			* namely when there is no precomposed Unicode value for the glyph.
142			*/
143			#if !ENABLE_FEATURE_LOADFONT_PSF2
144			#define do_loadtable(fd, inbuf, tailsz, fontsize, psf2) \
145			do_loadtable(fd, inbuf, tailsz, fontsize)
146			#endif
147			static void do_loadtable(int fd, unsigned char *inbuf, int tailsz, int fontsize, int psf2)
148	niro	532	{
149	niro	1123	#if !ENABLE_FEATURE_LOADFONT_PSF2
150			/* gcc 4.3.1 code size: */
151			# define psf2 0 /* +0 bytes */
152			// const int psf2 = 0; /* +8 bytes */
153			// enum { psf2 = 0 }; /* +13 bytes */
154			#endif
155	niro	532	struct unimapinit advice;
156			struct unimapdesc ud;
157			struct unipair *up;
158			int ct = 0, maxct;
159			int glyph;
160			uint16_t unicode;
161
162	niro	816	maxct = tailsz; /* more than enough */
163	niro	1123	up = xmalloc(maxct * sizeof(*up));
164	niro	532
165			for (glyph = 0; glyph < fontsize; glyph++) {
166	niro	1123	while (tailsz > 0) {
167			if (!psf2) { /* PSF1 */
168			unicode = (((uint16_t) inbuf[1]) << 8) + inbuf[0];
169			tailsz -= 2;
170			inbuf += 2;
171			if (unicode == PSF1_SEPARATOR)
172			break;
173			} else { /* PSF2 */
174			#if ENABLE_FEATURE_LOADFONT_PSF2
175			--tailsz;
176			unicode = *inbuf++;
177			if (unicode == PSF2_SEPARATOR) {
178			break;
179			} else if (unicode == PSF2_STARTSEQ) {
180			bb_error_msg_and_die("unicode sequences not implemented");
181			} else if (unicode >= 0xC0) {
182			if (unicode >= 0xFC)
183			unicode &= 0x01, maxct = 5;
184			else if (unicode >= 0xF8)
185			unicode &= 0x03, maxct = 4;
186			else if (unicode >= 0xF0)
187			unicode &= 0x07, maxct = 3;
188			else if (unicode >= 0xE0)
189			unicode &= 0x0F, maxct = 2;
190			else
191			unicode &= 0x1F, maxct = 1;
192			do {
193			if (tailsz <= 0 \|\| inbuf < 0x80 \|\| inbuf > 0xBF)
194			bb_error_msg_and_die("illegal UTF-8 character");
195			--tailsz;
196			unicode = (unicode << 6) + (*inbuf++ & 0x3F);
197			} while (--maxct > 0);
198			} else if (unicode >= 0x80) {
199			bb_error_msg_and_die("illegal UTF-8 character");
200			}
201			#else
202			return;
203			#endif
204			}
205	niro	532	up[ct].unicode = unicode;
206			up[ct].fontpos = glyph;
207			ct++;
208			}
209			}
210
211			/* Note: after PIO_UNIMAPCLR and before PIO_UNIMAP
212			this printf did not work on many kernels */
213
214			advice.advised_hashsize = 0;
215			advice.advised_hashstep = 0;
216			advice.advised_hashlevel = 0;
217	niro	816	xioctl(fd, PIO_UNIMAPCLR, &advice);
218	niro	532	ud.entry_ct = ct;
219			ud.entries = up;
220	niro	816	xioctl(fd, PIO_UNIMAP, &ud);
221	niro	1123	#undef psf2
222	niro	532	}
223
224	niro	1123	static void do_load(int fd, unsigned char *buffer, size_t len)
225	niro	532	{
226	niro	1123	int height;
227			int width = 8;
228			int charsize;
229			int fontsize = 256;
230			int has_table = 0;
231			unsigned char *font = buffer;
232			unsigned char *table;
233	niro	532
234	niro	1123	if (len >= sizeof(struct psf1_header) && PSF1_MAGIC_OK(psf1h(buffer))) {
235			if (psf1h(buffer)->mode > PSF1_MAXMODE)
236	niro	816	bb_error_msg_and_die("unsupported psf file mode");
237	niro	1123	if (psf1h(buffer)->mode & PSF1_MODE512)
238			fontsize = 512;
239			if (psf1h(buffer)->mode & PSF1_MODEHASTAB)
240			has_table = 1;
241			height = charsize = psf1h(buffer)->charsize;
242			font += sizeof(struct psf1_header);
243			} else
244			#if ENABLE_FEATURE_LOADFONT_PSF2
245			if (len >= sizeof(struct psf2_header) && PSF2_MAGIC_OK(psf2h(buffer))) {
246			if (psf2h(buffer)->version > PSF2_MAXVERSION)
247			bb_error_msg_and_die("unsupported psf file version");
248			fontsize = psf2h(buffer)->length;
249			if (psf2h(buffer)->flags & PSF2_HAS_UNICODE_TABLE)
250			has_table = 2;
251			charsize = psf2h(buffer)->charsize;
252			height = psf2h(buffer)->height;
253			width = psf2h(buffer)->width;
254			font += psf2h(buffer)->headersize;
255			} else
256			#endif
257			#if ENABLE_FEATURE_LOADFONT_RAW
258			if (len == 9780) { /* file with three code pages? */
259			charsize = height = 16;
260			font += 40;
261			} else if ((len & 0377) == 0) { /* bare font */
262			charsize = height = len / 256;
263			} else
264			#endif
265			{
266			bb_error_msg_and_die("input file: bad length or unsupported font type");
267			}
268
269	niro	816	#if !defined(PIO_FONTX) \|\| defined(__sparc__)
270	niro	1123	if (fontsize != 256)
271			bb_error_msg_and_die("only fontsize 256 supported");
272	niro	816	#endif
273
274	niro	1123	table = font + fontsize * charsize;
275			buffer += len;
276	niro	816
277	niro	1123	if (table > buffer \|\| (!has_table && table != buffer))
278			bb_error_msg_and_die("input file: bad length");
279
280			do_loadfont(fd, font, height, width, charsize, fontsize);
281
282			if (has_table)
283			do_loadtable(fd, table, buffer - table, fontsize, has_table - 1);
284	niro	816	}
285
286	niro	1123
287	niro	816	#if ENABLE_LOADFONT
288			int loadfont_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
289			int loadfont_main(int argc UNUSED_PARAM, char **argv)
290			{
291			size_t len;
292	niro	1123	unsigned char *buffer;
293	niro	816
294			// no arguments allowed!
295			opt_complementary = "=0";
296			getopt32(argv, "");
297
298	niro	532	/*
299			* We used to look at the length of the input file
300			* with stat(); now that we accept compressed files,
301			* just read the entire file.
302			*/
303	niro	816	len = 32*1024; // can't be larger
304	niro	1123	buffer = xmalloc_read(STDIN_FILENO, &len);
305	niro	816	// xmalloc_open_zipped_read_close(filename, &len);
306	niro	1123	if (!buffer)
307	niro	532	bb_perror_msg_and_die("error reading input font");
308	niro	1123	do_load(get_console_fd_or_die(), buffer, len);
309	niro	532
310	niro	816	return EXIT_SUCCESS;
311			}
312			#endif
313	niro	532
314	niro	816	#if ENABLE_SETFONT
315	niro	532
316	niro	816	/*
317			kbd-1.12:
318	niro	532
319	niro	816	setfont [-O font+umap.orig] [-o font.orig] [-om cmap.orig]
320			[-ou umap.orig] [-N] [font.new ...] [-m cmap] [-u umap] [-C console]
321			[-hNN] [-v] [-V]
322	niro	532
323	niro	816	-h NN Override font height
324			-o file
325			Save previous font in file
326			-O file
327			Save previous font and Unicode map in file
328			-om file
329			Store console map in file
330			-ou file
331			Save previous Unicode map in file
332			-m file
333			Load console map or Unicode console map from file
334			-u file
335			Load Unicode table describing the font from file
336			Example:
337			# cp866
338			0x00-0x7f idem
339			#
340			0x80 U+0410 # CYRILLIC CAPITAL LETTER A
341			0x81 U+0411 # CYRILLIC CAPITAL LETTER BE
342			0x82 U+0412 # CYRILLIC CAPITAL LETTER VE
343			-C console
344			Set the font for the indicated console
345			-v Verbose
346			-V Version
347			*/
348
349			#if ENABLE_FEATURE_SETFONT_TEXTUAL_MAP
350			static int ctoi(char *s)
351			{
352			if (s[0] == '\'' && s[1] != '\0' && s[2] == '\'' && s[3] == '\0')
353			return s[1];
354			// U+ means 0x
355			if (s[0] == 'U' && s[1] == '+') {
356			s[0] = '0';
357			s[1] = 'x';
358			}
359			if (!isdigit(s[0]))
360			return -1;
361			return xstrtoul(s, 0);
362			}
363	niro	532	#endif
364
365	niro	816	int setfont_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
366			int setfont_main(int argc UNUSED_PARAM, char **argv)
367			{
368			size_t len;
369			unsigned opts;
370			int fd;
371	niro	1123	unsigned char *buffer;
372	niro	816	char *mapfilename;
373			const char *tty_name = CURRENT_TTY;
374
375			opt_complementary = "=1";
376			opts = getopt32(argv, "m:C:", &mapfilename, &tty_name);
377			argv += optind;
378
379	niro	984	fd = xopen_nonblocking(tty_name);
380	niro	816
381			if (sizeof(CONFIG_DEFAULT_SETFONT_DIR) > 1) { // if not ""
382			if (*argv[0] != '/') {
383			// goto default fonts location. don't die if doesn't exist
384			chdir(CONFIG_DEFAULT_SETFONT_DIR "/consolefonts");
385			}
386	niro	532	}
387	niro	816	// load font
388			len = 32*1024; // can't be larger
389	niro	1123	buffer = xmalloc_open_zipped_read_close(*argv, &len);
390			if (!buffer)
391	niro	816	bb_simple_perror_msg_and_die(*argv);
392	niro	1123	do_load(fd, buffer, len);
393	niro	532
394	niro	816	// load the screen map, if any
395			if (opts & 1) { // -m
396			unsigned mode = PIO_SCRNMAP;
397			void *map;
398
399			if (sizeof(CONFIG_DEFAULT_SETFONT_DIR) > 1) { // if not ""
400			if (mapfilename[0] != '/') {
401			// goto default keymaps location
402			chdir(CONFIG_DEFAULT_SETFONT_DIR "/consoletrans");
403			}
404			}
405			// fetch keymap
406			map = xmalloc_open_zipped_read_close(mapfilename, &len);
407			if (!map)
408			bb_simple_perror_msg_and_die(mapfilename);
409			// file size is 256 or 512 bytes? -> assume binary map
410			if (len == E_TABSZ \|\| len == 2*E_TABSZ) {
411			if (len == 2*E_TABSZ)
412			mode = PIO_UNISCRNMAP;
413			}
414			#if ENABLE_FEATURE_SETFONT_TEXTUAL_MAP
415			// assume textual Unicode console maps:
416			// 0x00 U+0000 # NULL (NUL)
417			// 0x01 U+0001 # START OF HEADING (SOH)
418			// 0x02 U+0002 # START OF TEXT (STX)
419			// 0x03 U+0003 # END OF TEXT (ETX)
420			else {
421			int i;
422			char *token[2];
423			parser_t *parser;
424
425			if (ENABLE_FEATURE_CLEAN_UP)
426			free(map);
427			map = xmalloc(E_TABSZ * sizeof(unsigned short));
428
429			#define unicodes ((unsigned short *)map)
430			// fill vanilla map
431			for (i = 0; i < E_TABSZ; i++)
432			unicodes[i] = 0xf000 + i;
433
434			parser = config_open(mapfilename);
435			while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL \| PARSE_MIN_DIE)) {
436			// parse code/value pair
437			int a = ctoi(token[0]);
438			int b = ctoi(token[1]);
439			if (a < 0 \|\| a >= E_TABSZ
440			\|\| b < 0 \|\| b > 65535
441			) {
442			bb_error_msg_and_die("map format");
443			}
444			// patch map
445			unicodes[a] = b;
446			// unicode character is met?
447			if (b > 255)
448			mode = PIO_UNISCRNMAP;
449			}
450			if (ENABLE_FEATURE_CLEAN_UP)
451			config_close(parser);
452
453			if (mode != PIO_UNISCRNMAP) {
454			#define asciis ((unsigned char *)map)
455			for (i = 0; i < E_TABSZ; i++)
456			asciis[i] = unicodes[i];
457			#undef asciis
458			}
459			#undef unicodes
460			}
461			#endif // ENABLE_FEATURE_SETFONT_TEXTUAL_MAP
462
463			// do set screen map
464			xioctl(fd, mode, map);
465
466			if (ENABLE_FEATURE_CLEAN_UP)
467			free(map);
468	niro	532	}
469	niro	816
470			return EXIT_SUCCESS;
471	niro	532	}
472	niro	816	#endif