mirror of
https://github.com/sheumann/hush.git
synced 2024-09-12 00:55:11 +00:00
conspy: significant output minimization; blink attribute support
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
parent
31c3dad851
commit
1a3b0710f5
@ -8,10 +8,6 @@
|
|||||||
* http://ace-host.stuart.id.au/russell/files/conspy.c
|
* http://ace-host.stuart.id.au/russell/files/conspy.c
|
||||||
*
|
*
|
||||||
* Licensed under GPLv2 or later, see file License in this tarball for details.
|
* Licensed under GPLv2 or later, see file License in this tarball for details.
|
||||||
*
|
|
||||||
* example: conspy num shared access to console num
|
|
||||||
* or conspy -d num screenshot of console num
|
|
||||||
* or conspy -cs num poor man's GNU screen like
|
|
||||||
*/
|
*/
|
||||||
|
|
||||||
//applet:IF_CONSPY(APPLET(conspy, _BB_DIR_BIN, _BB_SUID_DROP))
|
//applet:IF_CONSPY(APPLET(conspy, _BB_DIR_BIN, _BB_SUID_DROP))
|
||||||
@ -23,12 +19,12 @@
|
|||||||
//config: default n
|
//config: default n
|
||||||
//config: help
|
//config: help
|
||||||
//config: A text-mode VNC like program for Linux virtual terminals.
|
//config: A text-mode VNC like program for Linux virtual terminals.
|
||||||
//config: example : conspy num shared access to console num
|
//config: example: conspy NUM shared access to console num
|
||||||
//config: or conspy -d num screenshot of console num
|
//config: or conspy -nd NUM screenshot of console num
|
||||||
//config: or conspy -cs num poor man's GNU screen like
|
//config: or conspy -cs NUM poor man's GNU screen like
|
||||||
|
|
||||||
//usage:#define conspy_trivial_usage
|
//usage:#define conspy_trivial_usage
|
||||||
//usage: "[-vcsndf] [-x ROW] [-y LINE] [CONSOLE_NO]"
|
//usage: "[-vcsndf] [-x COL] [-y LINE] [CONSOLE_NO]"
|
||||||
//usage:#define conspy_full_usage "\n\n"
|
//usage:#define conspy_full_usage "\n\n"
|
||||||
//usage: "A text-mode VNC like program for Linux virtual consoles."
|
//usage: "A text-mode VNC like program for Linux virtual consoles."
|
||||||
//usage: "\nTo exit, quickly press ESC 3 times."
|
//usage: "\nTo exit, quickly press ESC 3 times."
|
||||||
@ -40,14 +36,14 @@
|
|||||||
//usage: "\n -n Black & white"
|
//usage: "\n -n Black & white"
|
||||||
//usage: "\n -d Dump console to stdout"
|
//usage: "\n -d Dump console to stdout"
|
||||||
//usage: "\n -f Follow cursor"
|
//usage: "\n -f Follow cursor"
|
||||||
//usage: "\n -x ROW Starting row"
|
//usage: "\n -x COL Starting column"
|
||||||
//usage: "\n -y LINE Starting line"
|
//usage: "\n -y LINE Starting line"
|
||||||
|
|
||||||
#include "libbb.h"
|
#include "libbb.h"
|
||||||
#include <sys/kd.h>
|
#include <sys/kd.h>
|
||||||
|
|
||||||
struct screen_info {
|
struct screen_info {
|
||||||
unsigned char lines, rows, cursor_x, cursor_y;
|
unsigned char lines, cols, cursor_x, cursor_y;
|
||||||
};
|
};
|
||||||
|
|
||||||
#define CHAR(x) ((uint8_t)((x)[0]))
|
#define CHAR(x) ((uint8_t)((x)[0]))
|
||||||
@ -62,20 +58,29 @@ struct globals {
|
|||||||
int kbd_fd;
|
int kbd_fd;
|
||||||
unsigned width;
|
unsigned width;
|
||||||
unsigned height;
|
unsigned height;
|
||||||
uint8_t last_attr;
|
unsigned col;
|
||||||
|
unsigned line;
|
||||||
int ioerror_count;
|
int ioerror_count;
|
||||||
int key_count;
|
int key_count;
|
||||||
int escape_count;
|
int escape_count;
|
||||||
int nokeys;
|
int nokeys;
|
||||||
int current;
|
int current;
|
||||||
int vcsa_fd;
|
int vcsa_fd;
|
||||||
struct screen_info info;
|
uint16_t last_attr;
|
||||||
|
uint8_t last_bold;
|
||||||
|
uint8_t last_blink;
|
||||||
|
uint8_t last_fg;
|
||||||
|
uint8_t last_bg;
|
||||||
|
char attrbuf[sizeof("\033[0;1;5;30;40m")];
|
||||||
|
smallint curoff;
|
||||||
|
struct screen_info remote;
|
||||||
struct termios term_orig;
|
struct termios term_orig;
|
||||||
};
|
};
|
||||||
|
|
||||||
#define G (*ptr_to_globals)
|
#define G (*ptr_to_globals)
|
||||||
#define INIT_G() do { \
|
#define INIT_G() do { \
|
||||||
SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
|
SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
|
||||||
|
strcpy((char*)&G.last_attr, "\xff\xff\xff\xff\xff\xff" "\033["); \
|
||||||
} while (0)
|
} while (0)
|
||||||
|
|
||||||
enum {
|
enum {
|
||||||
@ -96,8 +101,8 @@ static void screen_read_close(void)
|
|||||||
|
|
||||||
xread(G.vcsa_fd, data, G.size);
|
xread(G.vcsa_fd, data, G.size);
|
||||||
G.last_attr = 0;
|
G.last_attr = 0;
|
||||||
for (i = 0; i < G.info.lines; i++) {
|
for (i = 0; i < G.remote.lines; i++) {
|
||||||
for (j = 0; j < G.info.rows; j++, NEXT(data)) {
|
for (j = 0; j < G.remote.cols; j++, NEXT(data)) {
|
||||||
unsigned x = j - G.x; // if will catch j < G.x too
|
unsigned x = j - G.x; // if will catch j < G.x too
|
||||||
unsigned y = i - G.y; // if will catch i < G.y too
|
unsigned y = i - G.y; // if will catch i < G.y too
|
||||||
|
|
||||||
@ -140,51 +145,101 @@ static void screen_char(char *data)
|
|||||||
// text 8th bit
|
// text 8th bit
|
||||||
// converting RGB color bit triad to BGR:
|
// converting RGB color bit triad to BGR:
|
||||||
static const char color[8] = "04261537";
|
static const char color[8] = "04261537";
|
||||||
|
char *ptr;
|
||||||
|
uint8_t fg, bold, bg, blink;
|
||||||
|
|
||||||
G.last_attr = attr;
|
G.last_attr = attr;
|
||||||
printf("\033[%c;4%c;3%cm",
|
|
||||||
(attr & 8) ? '1' : '0', // bold text / reset all
|
//attr >>= 1; // for framebuffer console
|
||||||
color[(attr >> 4) & 7], // bkgd color
|
ptr = G.attrbuf + sizeof("\033[")-1;
|
||||||
color[attr & 7] // text color
|
fg = (attr & 0x07);
|
||||||
);
|
bold = (attr & 0x08);
|
||||||
|
bg = (attr & 0x70);
|
||||||
|
blink = (attr & 0x80);
|
||||||
|
if (G.last_bold > bold || G.last_blink > blink) {
|
||||||
|
G.last_bold = G.last_blink = 0;
|
||||||
|
G.last_bg = 0xff;
|
||||||
|
*ptr++ = '0';
|
||||||
|
*ptr++ = ';';
|
||||||
|
}
|
||||||
|
if (G.last_bold != bold) {
|
||||||
|
G.last_bold = bold;
|
||||||
|
*ptr++ = '1';
|
||||||
|
*ptr++ = ';';
|
||||||
|
}
|
||||||
|
if (G.last_blink != blink) {
|
||||||
|
G.last_blink = blink;
|
||||||
|
*ptr++ = '5';
|
||||||
|
*ptr++ = ';';
|
||||||
|
}
|
||||||
|
if (G.last_fg != fg) {
|
||||||
|
G.last_fg = fg;
|
||||||
|
*ptr++ = '3';
|
||||||
|
*ptr++ = color[fg];
|
||||||
|
*ptr++ = ';';
|
||||||
|
}
|
||||||
|
if (G.last_bg != bg) {
|
||||||
|
G.last_bg = bg;
|
||||||
|
*ptr++ = '4';
|
||||||
|
*ptr++ = color[bg >> 4];
|
||||||
|
*ptr++ = ';';
|
||||||
|
}
|
||||||
|
if (ptr != G.attrbuf + sizeof("\033[")-1) {
|
||||||
|
ptr[-1] = 'm';
|
||||||
|
*ptr = '\0';
|
||||||
|
fputs(G.attrbuf, stdout);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
putchar(CHAR(data));
|
putchar(CHAR(data));
|
||||||
|
G.col++;
|
||||||
}
|
}
|
||||||
|
|
||||||
static void clrscr(void)
|
static void clrscr(void)
|
||||||
{
|
{
|
||||||
printf("\033[1;1H" "\033[0J");
|
// Home, clear till end of src, cursor on
|
||||||
|
fputs("\033[1;1H" "\033[J" "\033[?25h", stdout);
|
||||||
|
G.curoff = G.col = G.line = 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
static void curoff(void)
|
static void curoff(void)
|
||||||
{
|
{
|
||||||
printf("\033[?25l");
|
if (!G.curoff) {
|
||||||
|
G.curoff = 1;
|
||||||
|
fputs("\033[?25l", stdout);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
static void curon(void)
|
static void curon(void)
|
||||||
{
|
{
|
||||||
printf("\033[?25h");
|
if (G.curoff) {
|
||||||
|
G.curoff = 0;
|
||||||
|
fputs("\033[?25h", stdout);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
static void gotoxy(int row, int line)
|
static void gotoxy(int col, int line)
|
||||||
{
|
{
|
||||||
printf("\033[%u;%uH", line + 1, row + 1);
|
if (G.col != col || G.line != line) {
|
||||||
|
G.col = col;
|
||||||
|
G.line = line;
|
||||||
|
printf("\033[%u;%uH", line + 1, col + 1);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
static void screen_dump(void)
|
static void screen_dump(void)
|
||||||
{
|
{
|
||||||
int linefeed_cnt;
|
int linefeed_cnt;
|
||||||
int line, row;
|
int line, col;
|
||||||
int linecnt = G.info.lines - G.y;
|
int linecnt = G.remote.lines - G.y;
|
||||||
char *data = G.data + G.current + (2 * G.y * G.info.rows);
|
char *data = G.data + G.current + (2 * G.y * G.remote.cols);
|
||||||
|
|
||||||
linefeed_cnt = 0;
|
linefeed_cnt = 0;
|
||||||
for (line = 0; line < linecnt && line < G.height; line++) {
|
for (line = 0; line < linecnt && line < G.height; line++) {
|
||||||
int space_cnt = 0;
|
int space_cnt = 0;
|
||||||
for (row = 0; row < G.info.rows; row++, NEXT(data)) {
|
for (col = 0; col < G.remote.cols; col++, NEXT(data)) {
|
||||||
unsigned tty_row = row - G.x; // if will catch row < G.x too
|
unsigned tty_col = col - G.x; // if will catch col < G.x too
|
||||||
|
|
||||||
if (tty_row >= G.width)
|
if (tty_col >= G.width)
|
||||||
continue;
|
continue;
|
||||||
space_cnt++;
|
space_cnt++;
|
||||||
if (BW && CHAR(data) == ' ')
|
if (BW && CHAR(data) == ' ')
|
||||||
@ -204,8 +259,8 @@ static void screen_dump(void)
|
|||||||
|
|
||||||
static void curmove(void)
|
static void curmove(void)
|
||||||
{
|
{
|
||||||
unsigned cx = G.info.cursor_x - G.x;
|
unsigned cx = G.remote.cursor_x - G.x;
|
||||||
unsigned cy = G.info.cursor_y - G.y;
|
unsigned cy = G.remote.cursor_y - G.y;
|
||||||
|
|
||||||
if (cx >= G.width || cy >= G.height) {
|
if (cx >= G.width || cy >= G.height) {
|
||||||
curoff();
|
curoff();
|
||||||
@ -226,7 +281,7 @@ static void cleanup(int code)
|
|||||||
}
|
}
|
||||||
// Reset attributes
|
// Reset attributes
|
||||||
if (!BW)
|
if (!BW)
|
||||||
printf("\033[0m");
|
fputs("\033[0m", stdout);
|
||||||
bb_putchar('\n');
|
bb_putchar('\n');
|
||||||
if (code > 1)
|
if (code > 1)
|
||||||
kill_myself_with_sig(code); // does not return
|
kill_myself_with_sig(code); // does not return
|
||||||
@ -236,8 +291,8 @@ static void cleanup(int code)
|
|||||||
static void get_initial_data(const char* vcsa_name)
|
static void get_initial_data(const char* vcsa_name)
|
||||||
{
|
{
|
||||||
G.vcsa_fd = xopen(vcsa_name, O_RDONLY);
|
G.vcsa_fd = xopen(vcsa_name, O_RDONLY);
|
||||||
xread(G.vcsa_fd, &G.info, 4);
|
xread(G.vcsa_fd, &G.remote, 4);
|
||||||
G.size = G.info.rows * G.info.lines * 2;
|
G.size = G.remote.cols * G.remote.lines * 2;
|
||||||
G.width = G.height = UINT_MAX;
|
G.width = G.height = UINT_MAX;
|
||||||
G.data = xzalloc(2 * G.size);
|
G.data = xzalloc(2 * G.size);
|
||||||
screen_read_close();
|
screen_read_close();
|
||||||
@ -354,34 +409,30 @@ int conspy_main(int argc UNUSED_PARAM, char **argv)
|
|||||||
int i, j;
|
int i, j;
|
||||||
char *data, *old;
|
char *data, *old;
|
||||||
|
|
||||||
old = G.data + G.current;
|
|
||||||
G.current = G.size - G.current;
|
|
||||||
data = G.data + G.current;
|
|
||||||
|
|
||||||
// Close & re-open vcsa in case they have
|
// Close & re-open vcsa in case they have
|
||||||
// swapped virtual consoles
|
// swapped virtual consoles
|
||||||
G.vcsa_fd = xopen(vcsa_name, O_RDONLY);
|
G.vcsa_fd = xopen(vcsa_name, O_RDONLY);
|
||||||
xread(G.vcsa_fd, &G.info, 4);
|
xread(G.vcsa_fd, &G.remote, 4);
|
||||||
if (G.size != (G.info.rows * G.info.lines * 2)) {
|
if (G.size != (G.remote.cols * G.remote.lines * 2)) {
|
||||||
cleanup(1);
|
cleanup(1);
|
||||||
}
|
}
|
||||||
i = G.width;
|
i = G.width;
|
||||||
j = G.height;
|
j = G.height;
|
||||||
get_terminal_width_height(G.kbd_fd, &G.width, &G.height);
|
get_terminal_width_height(G.kbd_fd, &G.width, &G.height);
|
||||||
if ((option_mask32 & FLAG(f))) {
|
if ((option_mask32 & FLAG(f))) {
|
||||||
int nx = G.info.cursor_x - G.width + 1;
|
int nx = G.remote.cursor_x - G.width + 1;
|
||||||
int ny = G.info.cursor_y - G.height + 1;
|
int ny = G.remote.cursor_y - G.height + 1;
|
||||||
|
|
||||||
if (G.info.cursor_x < G.x) {
|
if (G.remote.cursor_x < G.x) {
|
||||||
G.x = G.info.cursor_x;
|
G.x = G.remote.cursor_x;
|
||||||
i = 0; // force refresh
|
i = 0; // force refresh
|
||||||
}
|
}
|
||||||
if (nx > G.x) {
|
if (nx > G.x) {
|
||||||
G.x = nx;
|
G.x = nx;
|
||||||
i = 0; // force refresh
|
i = 0; // force refresh
|
||||||
}
|
}
|
||||||
if (G.info.cursor_y < G.y) {
|
if (G.remote.cursor_y < G.y) {
|
||||||
G.y = G.info.cursor_y;
|
G.y = G.remote.cursor_y;
|
||||||
i = 0; // force refresh
|
i = 0; // force refresh
|
||||||
}
|
}
|
||||||
if (ny > G.y) {
|
if (ny > G.y) {
|
||||||
@ -391,40 +442,43 @@ int conspy_main(int argc UNUSED_PARAM, char **argv)
|
|||||||
}
|
}
|
||||||
|
|
||||||
// Scan console data and redraw our tty where needed
|
// Scan console data and redraw our tty where needed
|
||||||
|
old = G.data + G.current;
|
||||||
|
G.current = G.size - G.current;
|
||||||
|
data = G.data + G.current;
|
||||||
screen_read_close();
|
screen_read_close();
|
||||||
if (i != G.width || j != G.height) {
|
if (i != G.width || j != G.height) {
|
||||||
clrscr();
|
clrscr();
|
||||||
screen_dump();
|
screen_dump();
|
||||||
}
|
} else {
|
||||||
else for (i = 0; i < G.info.lines; i++) {
|
// For each remote line
|
||||||
char *last = last;
|
old += G.y * G.remote.cols * 2;
|
||||||
char *first = NULL;
|
data += G.y * G.remote.cols * 2;
|
||||||
int iy = i - G.y;
|
for (i = G.y; i < G.remote.lines; i++) {
|
||||||
|
char *first = NULL; // first char which needs updating
|
||||||
|
char *last = last; // last char which needs updating
|
||||||
|
unsigned iy = i - G.y;
|
||||||
|
|
||||||
if (iy >= (int) G.height)
|
if (iy >= G.height)
|
||||||
break;
|
break;
|
||||||
for (j = 0; j < G.info.rows; j++) {
|
old += G.x * 2;
|
||||||
last = data;
|
data += G.x * 2;
|
||||||
if (DATA(data) != DATA(old) && iy >= 0) {
|
for (j = G.x; j < G.remote.cols; j++, NEXT(old), NEXT(data)) {
|
||||||
unsigned jx = j - G.x;
|
unsigned jx = j - G.x;
|
||||||
|
|
||||||
last = NULL;
|
if (jx < G.width && DATA(data) != DATA(old)) {
|
||||||
if (first == NULL && jx < G.width) {
|
last = data;
|
||||||
first = data;
|
if (!first) {
|
||||||
gotoxy(jx, iy);
|
first = data;
|
||||||
|
gotoxy(jx, iy);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
NEXT(old);
|
if (first) {
|
||||||
NEXT(data);
|
// Rewrite updated data on the local screen
|
||||||
|
for (; first <= last; NEXT(first))
|
||||||
|
screen_char(first);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
if (first == NULL)
|
|
||||||
continue;
|
|
||||||
if (last == NULL)
|
|
||||||
last = data;
|
|
||||||
|
|
||||||
// Write the data to the screen
|
|
||||||
for (; first < last; NEXT(first))
|
|
||||||
screen_char(first);
|
|
||||||
}
|
}
|
||||||
curmove();
|
curmove();
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user