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sitas.c
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sitas.c
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#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/select.h>
#include <sys/time.h>
#include <sys/mman.h>
#define __USE_XOPEN
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <stdarg.h>
#include <locale.h>
#include "sitas.h"
#define STDIN STDIN_FILENO
#define STDOUT STDOUT_FILENO
#define STDERR STDERR_FILENO
#define PROGRAM "sitas"
#define VERSION "0.01"
#define COPYRIGHT "Jiang WenYuan"
#define SIG_UPDATE SIGRTMAX
#define SIG_CON SIGRTMAX-1
#define MAX_BUFFER 1024
#define LOCK 1
#define UNLOCK 0
#define MAX_ESCAPE_ARGC 8
#define NOTCONNECTED 0
#define CONNECTING 1
#define CONNECTED 2
#define DISCONNECTED 3
#define CONNECTFAILED 4
int MAX_SESSIONS = 128;
FILE *wfile = NULL;
int SCRROWS, SCRCOLS;
int TERMROWS, TERMCOLS;
int PTYROWS, PTYCOLS;
WINDOW *infowin = NULL;
WINDOW *termwin = NULL;
WINDOW *helpwin = NULL;
WINDOW *listwin = NULL;
char *skey[KEY_MAX + 1];
int color_map[8][8];
Session (*session)[1];
char **hosts = NULL;
int hosts_num = 0;
bool multi = true;
int current = 0;
struct flock *lock;
int lockfd;
static volatile sig_atomic_t sigflag;
bool insmod = false;
bool insnum = 0;
int prev_key=-1;
bool control_mode = false;
void parse_cmdline (int argc, char **argv) {
int optch;
char *hosts_file = NULL;
while ((optch = getopt (argc, argv, "f:hm:v")) != -1) {
switch (optch) {
case 'f':
hosts_file = optarg;
break;
case 'm':
MAX_SESSIONS = atoi (optarg);
if (MAX_SESSIONS <= 0) {
MAX_SESSIONS = 128;
}
break;
case 'v':
printf ("%s %s\t%s.\n", PROGRAM, VERSION, COPYRIGHT);
exit (1);
case 'h':
help ();
exit (1);
default:
help ();
exit (1);
}
}
if (hosts_file == NULL) {
help ();
exit(1);
}
FILE *pfile = fopen (hosts_file, "r");
if (pfile == NULL) {
printf ("Error: cannot open file `%s`\n", hosts_file);
exit (1);
}
int len = 0;
char buf[4096];
memset (buf, 0, 4096);
int num = 0;
while (!feof (pfile)) {
if (fgets (buf, 4096, pfile) != NULL) {
len = strlen (trim_right (buf));
if (len == 0) {
continue;
}
char *tmp = malloc (len + 1);
memset (tmp, 0, len + 1);
memcpy (tmp, buf, len);
num = hosts_num;
hosts_num++;
hosts = (char **) realloc (hosts, sizeof (char *) * hosts_num);
if (hosts == NULL) {
break;
} else {
*(hosts + num) = malloc (sizeof (char));
memset (*(hosts + num), 0, 4);
*(hosts + num) = tmp;
}
}
}
if (hosts == NULL || hosts_num == 0) {
printf ("Error: cannot parse file: `%s`\n", hosts_file);
exit (1);
}
if (hosts_num > MAX_SESSIONS) {
printf ("Error: too many hosts.\n");
exit (1);
}
}
void sitas_init () {
setlocale(LC_ALL, "");
initscr ();
keyboard_init ();
color_init ();
noecho ();
cbreak ();
clear ();
getmaxyx (stdscr, SCRROWS, SCRCOLS);
TERMROWS = SCRROWS - 2;
TERMCOLS = SCRCOLS;
PTYROWS = TERMROWS;
PTYCOLS = TERMCOLS - 1;
if (SCRROWS < 25 || SCRCOLS < 80) {
endwin ();
printf ("ERROR: need at least 80x25 terminal.\n");
exit (1);
}
refresh ();
infowin = newwin (SCRROWS - TERMROWS, SCRCOLS, 0, 0);
termwin = newwin (TERMROWS, TERMCOLS, SCRROWS - TERMROWS, 0);
scrollok (termwin, true);
sitas_signal ();
/*init lock */
/*
char tmpfile[] = "tmp_XXXXXX";
do{
lockfd = mkstemp(tmpfile);
}while(lockfd == -1);
unlink(tmpfile);
lock = (struct flock *)mmap(NULL, sizeof(struct flock), PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0);
wattrset(stdscr, COLOR_PAIR(3)|A_BOLD);
wmove(stdscr, 0, 0);
whline(stdscr, ACS_HLINE|A_NORMAL, cols);
leaveok(termwin, TRUE);
*/
}
void keyboard_init () {
keypad (stdscr, true);
memset (skey, 0, KEY_MAX + 1 * sizeof (char *));
skey[KEY_UP] = "\033[A";
skey[KEY_DOWN] = "\033[B";
skey[KEY_RIGHT] = "\033[C";
skey[KEY_LEFT] = "\033[D";
skey[KEY_BACKSPACE] = "\b";
/*skey[KEY_HOME] = "\033[H"; */
skey[KEY_HOME] = "\033[1~";
skey[KEY_IC] = "\033[2~";
skey[KEY_DC] = "\033[3~";
/*skey[KEY_END] = "\033[G"; */
skey[KEY_END] = "\033[4~";
skey[KEY_PPAGE] = "\033[5~";
skey[KEY_NPAGE] = "\033[6~";
}
void color_init () {
start_color ();
int fc, bc, pair = 0;
for (fc = 0; fc < 8; fc++) {
for (bc = 0; bc < 8; bc++) {
pair++;
color_map[fc][bc] = pair;
init_pair (pair, fc, bc);
}
}
}
//for Mac OS X
#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif
void session_init () {
Session *s;
s = (Session *) mmap (NULL, sizeof (Session) * MAX_SESSIONS, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0);
session = (Session (*)[1]) s;
int i = 0;
for (i = 0; i < MAX_SESSIONS; i++) {
if (i < hosts_num) {
int len = strlen (*(hosts + i));
session[i]->host = malloc (len + 1);
memset (session[i]->host, 0, len + 1);
memcpy (session[i]->host, *(hosts + i), len);
} else {
session[i]->host = NULL;
}
session[i]->pid = -1;
session[i]->pty = -1;
session[i]->win = NULL;
session[i]->usable = true;
session[i]->state = NOTCONNECTED;
session[i]->bold = false;
session[i]->underscore = false;
session[i]->blink = false;
session[i]->reverse = false;
session[i]->concealed = false; /* may use bit */
session[i]->fc = COLOR_WHITE;
session[i]->bc = COLOR_BLACK;
}
}
void sitas_splash () {
wprintw (infowin, "%s %s\t%s.", PROGRAM, VERSION, COPYRIGHT);
mvwchgat (infowin, 0, 0, 10, 0, color_map[COLOR_GREEN][COLOR_BLACK], NULL);
// mvwchgat (infowin, 1, 0, -1, 0, color_map[COLOR_WHITE][COLOR_BLUE], NULL);
mvwprintw (termwin, 0, 0, "Connecting...Please wait..(ctrl-c to abort)\n");
mvwprintw (termwin, 1, 0, "Press L to see connceting status\n");
wrefresh (infowin);
wrefresh (termwin);
while(1) {
// check if still connecting
bool connecting = false;
int i=0;
for (i = 0; i < MAX_SESSIONS; i++) {
if (session[i] != NULL && session[i]->usable != true) {
if (session[i]->state == CONNECTING){
connecting = true;
break;
}
}
}
// no.
if (connecting == false){
break;
}
fd_set rfs;
FD_ZERO (&rfs);
FD_SET (STDIN, &rfs);
int max = STDIN;
for (i = 0; i < MAX_SESSIONS; i++) {
if (session[i] != NULL && session[i]->usable != true && session[i]->state == CONNECTING) {
FD_SET (session[i]->pty, &rfs);
if (max < session[i]->pty) {
max = session[i]->pty;
}
}
}
int n = select (max + 1, &rfs, NULL, NULL, NULL);
if (n > 0) {
if (FD_ISSET (STDIN, &rfs)) {
int ch = getch ();
if (ch == 76 || ch == 108) {
sitas_list_session ();
}
}
for (i = 0; i < MAX_SESSIONS; i++) {
if (session[i] != NULL && session[i]->usable != true && session[i]->state == CONNECTING) {
if (FD_ISSET (session[i]->pty, &rfs)) {
int status = 0;
pid_t pid = waitpid (session[i]->pid, &status, WNOHANG);
if (pid == 0) {
session[i]->state=CONNECTED;
int flag = fcntl (session[i]->pty, F_GETFL, 0);
flag |= O_NONBLOCK;
fcntl (session[i]->pty, F_SETFL, flag);
/*
tcgetattr(session[i]->pty, &termwin);
termwin.c_cc[VMIN] = 0;
termwin.c_cc[VTIME] = 0;
tcsetattr(session[i]->pty, TCSANOW, &termwin);
*/
} else if( pid > 0 ) {
if (WIFEXITED(status)) {
session[i]->state=DISCONNECTED;
} else {
session[i]->state=CONNECTFAILED;
}
}
}
}
}
}
}
int sessions_num = sitas_sessions_num ();
if (hosts_num != sessions_num){
werase (termwin);
mvwprintw (termwin, 1, 0, "%d servers provided, %d servers connected", hosts_num, sessions_num);
mvwprintw (termwin, 2, 0, "Press L to see status.");
mvwprintw (termwin, 3, 0, "ESC to quit.");
mvwprintw (termwin, 4, 0, "ENTER to continue.");
wrefresh (termwin);
while (1) {
int ch = getch ();
if (ch == 76 || ch == 108) {
sitas_list_session ();
} else if (ch == 27) {
endwin ();
exit (0);
}else if (ch == 10) {
break;
}
}
}
}
int sitas_sessions_num () {
int sessions_num = 0;
int i = 0;
for (i = 0; i < MAX_SESSIONS; i++) {
if (session[i] != NULL && session[i]->state == CONNECTED){
sessions_num++;
}
}
return sessions_num;
}
void sitas_start () {
raw ();
char *t = "Help List Single/Multi Quit Add Prev Next Jump";
mvwprintw (infowin, 1, 0, "sitas v%s", VERSION);
mvwprintw (infowin, 1, 15, "%s", t);
mvwchgat (infowin, 1, 0, -1, 0, color_map[COLOR_WHITE][COLOR_BLUE], NULL);
mvwchgat (infowin, 1, 15, 1, 0, color_map[COLOR_RED][COLOR_BLUE], NULL);
mvwchgat (infowin, 1, 20, 1, 0, color_map[COLOR_MAGENTA][COLOR_BLUE], NULL);
mvwchgat (infowin, 1, 25, 1, 0, color_map[COLOR_CYAN][COLOR_BLUE], NULL);
mvwchgat (infowin, 1, 32, 1, 0, color_map[COLOR_YELLOW][COLOR_BLUE], NULL);
mvwchgat (infowin, 1, 38, 1, 0, color_map[COLOR_GREEN][COLOR_BLUE], NULL);
mvwchgat (infowin, 1, 43, 1, 0, color_map[COLOR_RED][COLOR_BLUE], NULL);
mvwchgat (infowin, 1, 47, 1, 0, color_map[COLOR_CYAN][COLOR_BLUE], NULL);
mvwchgat (infowin, 1, 52, 1, 0, color_map[COLOR_YELLOW][COLOR_BLUE], NULL);
mvwchgat (infowin, 1, 57, 1, 0, color_map[COLOR_GREEN][COLOR_BLUE], NULL);
sitas_visible_session ();
}
void get_new_host (char *buf) {
sitas_update_info ("Enter host here: ");
int len = 0;
while(1) {
char ch = (char) getch ();
if (ch == 8) {
buf[len-1<0?0:len-1]='\0';
len--;
sitas_update_info ("Enter host here: %s",buf);
} else if (ch == '\n') {
buf[4095]='\0';
break;
} else if (ch >= 32 && ch <= 126 && len < 4095) {
buf[len] = ch;
len++;
sitas_update_info ("Enter host here: %s",buf);
}
}
}
void sitas_connect () {
session_init ();
int i = 0;
for (i = 0; i < MAX_SESSIONS; i++) {
if (session[i] != NULL && session[i]->host != NULL) {
session_new (session[i]);
}
}
}
void sitas_update_info (char *fmt, ...) {
va_list argp;
va_start (argp, fmt);
wmove (infowin, 0, 0);
wclrtoeol (infowin);
vwprintw (infowin, fmt, argp);
wrefresh (infowin);
va_end (argp);
}
void sitas_banner () {
sitas_update_info ("[ID:%d|S:%d|T:%d] [%s] [%s] %s", current, sitas_sessions_num (), hosts_num, session[current]->host, multi ? "Multi" : "Single", control_mode ? "[control mode]" : "");
if (control_mode == false) {
touchwin (session[current]->win);
wrefresh (session[current]->win);
}
}
void sitas_forward_key (int ch) {
if (!multi) {
session_write2pty (session[current]->pty, ch);
} else {
int i = 0;
for (i = 0; i < MAX_SESSIONS; i++) {
if (session[i] != NULL && session[i]->pty > 0) {
session_write2pty (session[i]->pty, ch);
}
}
}
}
void sitas_sigchild_handle (int signum) {
/*setlock(LOCK); */
pid_t pid;
while ((pid = waitpid (-1, NULL, WNOHANG)) > 0) {
int i = 0;
for (i = 0; i < MAX_SESSIONS; i++) {
if (session[i] != NULL && session[i]->pid == pid) {
session_free (session[i]);
}
}
}
sitas_visible_session ();
/*setlock(UNLOCK); */
}
void sitas_visible_session () {
/* toggle the first available session visible */
int i=0;
for (i = 0; i < MAX_SESSIONS; i++) {
if (session[i] != NULL && session[i]->usable != true && session[i]->state == CONNECTED) {
current = i;
sitas_banner ();
touchwin (session[i]->win);
wrefresh (session[i]->win);
break;
}
}
}
void sitas_list_session () {
if (listwin == NULL) {
listwin = newwin (16, 70, (SCRROWS - 16) / 2, (SCRCOLS - 70) / 2);
wattrset (listwin, COLOR_PAIR (color_map[COLOR_WHITE][COLOR_BLUE]));
wattron (listwin, A_BOLD);
}
werase (listwin);
int x, y;
for (y = 0; y <= 16; y++) {
for (x = 0; x < 70; x++) {
waddch (listwin, ' ');
}
}
/* wborder(listwin, 0, 0, 0, 0, 0, 0, 0, 0); */
mvwprintw (listwin, 0, 1, "Use UP/DOWN arrow keys to scroll, 'q' to quit.");
y = 1;
for (x = 0; x < MAX_SESSIONS; x++) {
if (session[x] != NULL && session[x]->usable != true && y <= 15) {
int i = session[x]->state;
mvwprintw (listwin, y++, 1, "id=%d\t == > host = %s\t[%s]", x, session[x]->host,
i == NOTCONNECTED ? "NOTCONNECTED" :
i == CONNECTING ? "CONNECTING" :
i == CONNECTED ? "CONNECTED" :
i == DISCONNECTED ? "DISCONNECTED" :
i == CONNECTFAILED ? "CONNECTFAILED":"UNKOWN"
);
}
}
wrefresh (listwin);
int cur = 0;
while (true) {
x = getch ();
if (x < 0) {
continue;
}
if (x == KEY_UP) {
if (cur == 0) {
continue;
}
cur--;
} else if (x == KEY_DOWN) {
if (cur >= hosts_num - 15) {
continue;
}
cur++;
} else if (x == 'q' || x == 'Q') {
break;
}
for (y = 0; y < 16; y++) {
for (x = 0; x < 70; x++) {
waddch (listwin, ' ');
}
}
mvwprintw (listwin, 0, 1, "Use UP/DOWN arrow keys to scroll, 'q' to quit.");
y = 1;
int t = 0;
for (x = 0; x < MAX_SESSIONS; x++) {
if (session[x] != NULL && session[x]->usable != true && y <= 15) {
if (t++ < cur) {
continue;
}
int i = session[x]->state;
mvwprintw (listwin, y++, 1, "id=%d\t == > host = %s\t[%s]", x, session[x]->host,
i == NOTCONNECTED ? "NOTCONNECTED" :
i == CONNECTING ? "CONNECTING" :
i == CONNECTED ? "CONNECTED" :
i == DISCONNECTED ? "DISCONNECTED" :
i == CONNECTFAILED ? "CONNECTFAILED":"UNKOWN"
);
}
}
wrefresh (listwin);
}
touchwin (session[current]->win);
wrefresh (session[current]->win);
}
void sitas_prev_session () {
int i = 0;
bool t = false;
for (i = current - 1; i >= 0; i--) {
if (session[i] != NULL && session[i]->usable != true && session[i]->state == CONNECTED) {
current = i;
t = true;
break;
}
}
if (t == false) {
for (i = MAX_SESSIONS - 1; i >= current; i--) {
if (session[i] != NULL && session[i]->usable != true && session[i]->state == CONNECTED) {
current = i;
break;
}
}
}
sitas_banner ();
touchwin (session[current]->win);
wrefresh (session[current]->win);
}
void sitas_next_session () {
int i = 0;
bool t = false;
for (i = current + 1; i < MAX_SESSIONS; i++) {
if (session[i] != NULL && session[i]->usable == false && session[i]->state == CONNECTED) {
current = i;
t = true;
break;
}
}
if (t == false) {
for (i = 0; i < current; i++) {
if (session[i] != NULL && session[i]->usable == false && session[i]->state == CONNECTED) {
current = i;
break;
}
}
}
sitas_banner ();
touchwin (session[current]->win);
wrefresh (session[current]->win);
}
void sitas_jump_session () {
sitas_update_info ("Enter session id: ");
char ch;
char buf[4];
memset (buf, 0, 4);
int i = 0;
while ((ch = (char) wgetch (infowin)) != '\n') {
if (ch >= '0' && ch <= '9' && i < 3) {
buf[i++] = ch;
waddch (infowin, ch);
}
}
if (i == 0) {
sitas_banner ();
return;
}
i = atoi (buf);
if (session[i] != NULL && session[i]->usable !=true && session[i]->state == CONNECTED) {
current = i;
sitas_banner ();
touchwin (session[current]->win);
wrefresh (session[current]->win);
} else {
sitas_banner ();
return;
}
}
void sitas_add_session () {
char *buf = malloc (4096);
memset (buf, 0, 4096);
get_new_host(buf);
if (hosts_num == MAX_SESSIONS) {
sitas_update_info("Max Sessions!");
return;
}
session[hosts_num]->host = buf;
session[hosts_num]->pid = -1;
session[hosts_num]->pty = -1;
session[hosts_num]->win = NULL;
session[hosts_num]->usable = true;
session[hosts_num]->state = CONNECTING;
session[hosts_num]->bold = false;
session[hosts_num]->underscore = false;
session[hosts_num]->blink = false;
session[hosts_num]->reverse = false;
session[hosts_num]->concealed = false;
session[hosts_num]->fc = COLOR_WHITE;
session[hosts_num]->bc = COLOR_BLACK;
session_new(session[hosts_num]);
fd_set rfs;
FD_ZERO (&rfs);
FD_SET (session[hosts_num]->pty, &rfs);
int max = session[hosts_num]->pty;
int n = select (max + 1, &rfs, NULL, NULL, NULL);
if (n > 0) {
if (FD_ISSET (session[hosts_num]->pty, &rfs)) {
int status = 0;
pid_t pid = waitpid (session[hosts_num]->pid, &status, WNOHANG);
if (pid == 0) {
session[hosts_num]->state=CONNECTED;
int flag = fcntl (session[hosts_num]->pty, F_GETFL, 0);
flag |= O_NONBLOCK;
fcntl (session[hosts_num]->pty, F_SETFL, flag);
} else if( pid > 0 ) {
if (WIFEXITED(status)) {
session[hosts_num]->state=DISCONNECTED;
} else {
session[hosts_num]->state=CONNECTFAILED;
}
}
}
}
hosts_num++;
return;
int i = 0;
bool t = false;
for (i = current + 1; i < MAX_SESSIONS; i++) {
if (session[i] != NULL && session[i]->usable == false) {
current = i;
t = true;
break;
}
}
if (t == false) {
for (i = 0; i < current; i++) {
if (session[i] != NULL && session[i]->usable == false) {
current = i;
break;
}
}
}
sitas_banner ();
touchwin (session[current]->win);
wrefresh (session[current]->win);
}
void sitas_switch_mode () {
multi = !multi;
sitas_banner ();
touchwin (session[current]->win);
wrefresh (session[current]->win);
}
void sitas_help () {
if (helpwin == NULL) {
helpwin = newwin (18, 75, (SCRROWS - 17) / 2, (SCRCOLS - 75) / 2);
werase (helpwin);
wattrset (helpwin, COLOR_PAIR (color_map[COLOR_WHITE][COLOR_BLUE]));
wattron (helpwin, A_BOLD);
int x, y;
for (y = 0; y < 17; y++) {
for (x = 0; x < 75; x++) {
waddch (helpwin, ' ');
}
}
/*
wborder(helpwin, ACS_VLINE|COLOR_PAIR(color_map[COLOR_WHITE][COLOR_BLUE]),
ACS_VLINE|COLOR_PAIR(color_map[COLOR_WHITE][COLOR_BLUE]),
ACS_HLINE|COLOR_PAIR(color_map[COLOR_WHITE][COLOR_BLUE]),
ACS_HLINE|COLOR_PAIR(color_map[COLOR_WHITE][COLOR_BLUE]),
ACS_ULCORNER|COLOR_PAIR(color_map[COLOR_WHITE][COLOR_BLUE]),
ACS_URCORNER|COLOR_PAIR(color_map[COLOR_WHITE][COLOR_BLUE]),
ACS_LLCORNER|COLOR_PAIR(color_map[COLOR_WHITE][COLOR_BLUE]),
ACS_LRCORNER|COLOR_PAIR(color_map[COLOR_WHITE][COLOR_BLUE]));
*/
mvwaddstr (helpwin, 0, 34, "HELP");
mvwaddstr (helpwin, 1, 1, "Sitas -- Send Input To All SSH Sessions");
mvwaddstr (helpwin, 2, 1, "Sitas allows you to login several servers simultaneously, and forward");
mvwaddstr (helpwin, 3, 1, "every key you type to all servers. Meanwhile sitas can switch into");
mvwaddstr (helpwin, 4, 1, "singlecast mode and every key you type will be sent to current session");
mvwaddstr (helpwin, 5, 1, "only. Sitas can handle a subset of the more sophisticated ANSI escape");
mvwaddstr (helpwin, 6, 1, "code well, which means graphical programs like VIM are also supported");
mvwaddstr (helpwin, 7, 1, "Press ctrl-f to enter control mode first");
mvwaddstr (helpwin, 8, 1, "H: Show this help menu.");
mvwaddstr (helpwin, 9, 1, "L: List all active sessions by ID => HOST pairs.");
mvwaddstr (helpwin, 10, 1, "S/M: Switch between SingleCast and MultiCast mode.");
mvwaddstr (helpwin, 11, 1, "Q: Quit.");
mvwaddstr (helpwin, 12, 1, "A: Add new session.");
mvwaddstr (helpwin, 13, 1, "P: Move to the prev session and toggle it current active.");
mvwaddstr (helpwin, 14, 1, "N: Move to the next session and toggle it current active.");
mvwaddstr (helpwin, 15, 1, "J: Jump to the session by ID and toggle it current active.");
mvwaddstr (helpwin, 16, 1, "Any key to quit this.");
wattroff (helpwin, COLOR_PAIR (color_map[COLOR_WHITE][COLOR_GREEN]));
}
touchwin (helpwin);
wrefresh (helpwin);
getch ();
touchwin (session[current]->win);
wrefresh (session[current]->win);
}
void sitas_quit () {
sitas_update_info ("Do you really want to quit?[Y]");
char ch = (char) getch ();
if (ch == '\n' || ch == 'y' || ch == 'Y') {
int i = 0;
for (i = 0; i < MAX_SESSIONS; i++) {
if (session[i] != NULL && session[i]->pid > 0) {
kill (session[i]->pid, SIGUSR2);
}
}
endwin ();
exit (0);
}
sitas_banner ();
}
void session_new (Session * s) {
int pty;
pid_t pid;
struct winsize ws;
pid_t childpid;
ws.ws_row = PTYROWS;
ws.ws_col = PTYCOLS;
ws.ws_xpixel = ws.ws_ypixel = 0;
/*
setenv("TERM", "xterm", 1);
setenv("TERM", "ansi", 1);
*/
setenv ("TERM", "linux", 1);
pid = forkpty (&pty, NULL, NULL, &ws);
if (pid < 0) {
s->usable = true;
return;
} else if (pid == 0) {
execl ("/usr/bin/ssh", "ssh", s->host, NULL);
exit (127);
} else if (pid > 0) {
s->pid = pid;
s->pty = pty;
}
s->usable = false;
s->state = CONNECTING;
s->win = newwin (TERMROWS, TERMCOLS, SCRROWS - TERMROWS, 0);
scrollok (s->win, true);
}
void session_free (Session * session) {
// just mark state to NOTCONNECTED
if (session != NULL) {
session->state = NOTCONNECTED;
}
return;
if (session != NULL) {
session->usable = true;
free (session->host);
session->host = NULL;
session->pid = -1;
close (session->pty);
session->pty = -1;
session->state = NOTCONNECTED;
delwin (session->win);
session->win = NULL;
hosts_num--;
}
}
void sitas_child_event (int i) {
if (session[i] != NULL && session[i]->usable != true && session[i]->state == CONNECTED) {
fd_set rfs;
FD_ZERO (&rfs);
FD_SET (session[i]->pty, &rfs);
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 0;
char buf[MAX_BUFFER];
memset (buf, 0, MAX_BUFFER);
if ((select (session[i]->pty + 1, &rfs, NULL, NULL, &tv) > 0)) {
if (FD_ISSET (session[i]->pty, &rfs)) {
int n = read (session[i]->pty, buf, MAX_BUFFER);
if (n <= 0 && errno == EIO) {
session_free (session[i]);
sitas_next_session ();
} else if (n <= 0 && errno == EAGAIN) {
} else {
session_print (session[i], buf, n);
if (i == current) {
wrefresh (session[current]->win);
}
}
}
}
}
}
/*
void update (int signum, siginfo_t * info, void *a) {
int n;
char buf[MAX_BUFFER];
memset (buf, 0, MAX_BUFFER);
Session *s;
if (signum == SIG_UPDATE && info) {
s = (Session *) (info->si_value.sival_ptr);
fd_set rfs;
FD_ZERO (&rfs);
FD_SET (s->pty, &rfs);
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 0;
if ((select (s->pty + 1, &rfs, NULL, NULL, &tv) > 0)) {
if (FD_ISSET (s->pty, &rfs)) {
n = read (s->pty, buf, MAX_BUFFER);
if (n <= 0 && errno == EIO) {
session_free (s);
sitas_next_session ();
} else if (n <= 0 && errno == EAGAIN) {
} else {
session_print (s, buf, n);
if (s == session[current]) {
wrefresh (session[current]->win);
}
//sitas_help();
}
}
}
//kill(info->si_pid, SIG_CON);
}
}
*/
void session_print (Session * s, char *buf, int n) {
int i = 0;
int x, y;
for (i = 0; i < n; i++) {
if (s->escape) {
session_escape_attr (s, buf[i]);
} else {
if (buf[i] == '\r') {
getyx (s->win, y, x);
wmove (s->win, y, 0);
} else if (buf[i] == '\n') {
getyx (s->win, y, x);
wmove (s->win, y, PTYCOLS);
waddch (s->win, '\n');
} else if (buf[i] == '\t') {
getyx (s->win, y, x);
wmove (s->win, y, x + 8);
} else if (buf[i] == '\b') {
getyx (s->win, y, x);
wmove (s->win, y, x - 1 < 0 ? 0 : x - 1);
} else if (buf[i] == '\x1b') { /* CSI:ESC [ */
s->escape = true;
s->escape_len = 0;
memset (s->escape_buf, 0, 128);
s->escape_buf[s->escape_len++] = buf[i];
} else if (buf[i] == '\x9b') { /* single char CSI */
s->escape = true;
s->escape_len = 0;
memset (s->escape_buf, 0, 128);
s->escape_buf[s->escape_len++] = buf[i];
s->escape_buf[s->escape_len++] = '[';
} else if (buf[i] >= 0 && buf[i] < 32) {
} else {
/* }else if(buf[i] >= 32){ */
unsigned t = buf[i];
if (buf[i] < 0) {
t = t & 0x000000ff;
} if (insmod) {
winsch (s->win, t);
getyx (s->win, y, x);
wmove (s->win, y, x + 1);
if ((--insnum) == 0) {
insmod = false;
}
} else {
waddch (s->win, t);
}
}
}
}
}
void session_escape_attr (Session * s, char c) {
s->escape_buf[s->escape_len++] = c;
if (! (c == '@' || (c >= 'A' && c <= 'Z') || c == '`' || (c >= 'a' && c <= 'z'))) {
return;
}
int attr[MAX_ESCAPE_ARGC];
int x, y;
getyx (s->win, y, x);
if (s->escape_len == 2) {
if (c == 'M') {
if (y == 0) {
wscrl (s->win, -1);
} else {
wmove (s->win, y - 1, x);
}
}
s->escape = false;
return;
} else {
parse_escape (s->escape_buf, attr);
}
s->escape = false;
int i = 0;
switch (c) {
case 'A': /*CUU*/
if (attr[0] == -1) {
attr[0] = 1;
}
wmove (s->win, y - attr[0] > 0 ? y - attr[0] : 0, x);
break;
case 'B': /*CUD*/
case 'e': /*VPR*/
if (attr[0] == -1) {
attr[0] = 1;
}
wmove (s->win, y + attr[0] < PTYROWS ? y + attr[0] : PTYROWS, x);
break;
case 'C': /*CUF*/
case 'a': /*HPR*/
if (attr[0] == -1) {
attr[0] = 1;
}
wmove (s->win, y, x + attr[0] < PTYCOLS ? x + attr[0] : PTYCOLS);
break;
case 'D': /*CUB*/
if (attr[0] == -1) {
attr[0] = 1;
}
wmove (s->win, y, x - attr[0] > 0 ? x - attr[0] : 0);
break;
case 'd': /*VPA*/
if (attr[0] == -1) {
attr[0] = 0;
}
wmove (s->win, attr[0] > 0 ? attr[0] : 0, x);
break;
case 'E': /*NEL*/
if (attr[0] == -1) {
attr[0] = PTYROWS;
}
wmove (s->win, y + attr[0] < PTYROWS ? y + attr[0] : PTYROWS, 0);
break;
case 'F': /*CPL*/