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#include <stdio.h>
#include <stdio_ext.h>
#include <stdlib.h>
#include <stdbool.h>
#include <unistd.h>
#include <signal.h>
#include <pthread.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <ncurses.h>
#include <time.h>
#include <sys/time.h>
#include <sys/sysinfo.h>
#include "ui.h"
#define PKGNAME "nask"
#define LOGLEN 128
#define DEFWIN stdscr
#define PWSTR "PASSWORD: "
#define MAXINPUT 40
#define MAXPASS 64
#define MAXTRIES 3
#define SRELPOSY -4
#define PWTIMEOUT 10
#define APPTIMEOUT 600
#define SHTDWN_CMD "echo 'o' >/proc/sysrq-trigger"
#define RET_OK 0
#define RET_FORK -1
#define RET_SHELL 127
#define RET_DENIED 512
#define RET_BUSY 1280
static WINDOW *wnd_main;
static struct nask_ui *nui = NULL;
static pthread_t thrd;
static bool active;
static pthread_cond_t cnd_update = PTHREAD_COND_INITIALIZER;
static pthread_mutex_t mtx_update = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t tmretmtx = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t ncbsy = PTHREAD_MUTEX_INITIALIZER;
static void getwmaxyx(WINDOW *wnd, int x, int y, size_t len, int *startyp, int *startxp)
{
int maxy, maxx;
getmaxyx(wnd, maxy, maxx);
*startxp = ( ((int)(maxx/2)) - x - ((int)(len/2)));
*startyp = ( ((int)(maxy/2)) - y);
}
static void print_rel_to_wnd(WINDOW *wnd, int x, int y, char *text, size_t addwidth)
{
int startx, starty;
size_t len = strlen(text);
getwmaxyx(wnd, x, y, len+addwidth, &starty, &startx);
pthread_mutex_lock(&ncbsy);
mvhline(starty-2, startx-2, 0, len+addwidth+3);
mvhline(starty+2, startx-2, 0, len+addwidth+3);
mvvline(starty-1, startx-3, 0, 3);
mvvline(starty-1, startx+len+addwidth+1, 0, 3);
mvaddch(starty-2, startx-3, ACS_ULCORNER);
mvaddch(starty+2, startx-3, ACS_LLCORNER);
mvaddch(starty-2, startx+len+addwidth+1, ACS_URCORNER);
mvaddch(starty+2, startx+len+addwidth+1, ACS_LRCORNER);
mvwprintw(wnd, starty, startx, text);
pthread_mutex_unlock(&ncbsy);
}
static size_t print_pw_status(WINDOW *wnd, char *text)
{
int startx, starty;
size_t len = strlen(text);
curs_set(0);
getwmaxyx(wnd, 0, SRELPOSY, len+4, &starty, &startx);
pthread_mutex_lock(&ncbsy);
attron(A_BLINK);
mvwprintw(wnd, starty, startx-2, "< ");
mvwprintw(wnd, starty, startx+len, " >");
attroff(A_BLINK);
attron(A_BOLD | COLOR_PAIR(1));
mvwprintw(wnd, starty, startx, "%s", text);
attroff(A_BOLD | COLOR_PAIR(1));
pthread_mutex_unlock(&ncbsy);
return (strlen(text));
}
static void clear_pw_status(WINDOW *wnd, size_t len)
{
int startx, starty, curx, cury;
char buf[len+5];
if (len <= 0) return;
attroff(A_BLINK | A_BOLD | COLOR_PAIR(1));
memset(buf, ' ', len+4);
buf[len+4] = '\0';
pthread_mutex_lock(&ncbsy);
getyx(wnd, cury, curx);
getwmaxyx(wnd, 0, SRELPOSY, len+4, &starty, &startx);
mvwprintw(wnd, starty, startx-2, "%s", buf);
wmove(wnd, cury, curx);
curs_set(1);
pthread_mutex_unlock(&ncbsy);
}
void register_ui_elt(ui_callback uicb, void *data)
{
struct nask_ui *tmp;
if (nui == NULL) {
nui = calloc(1, sizeof(struct nask_ui));
nui->next = NULL;
}
tmp = nui;
while (tmp->next != NULL) {
tmp = tmp->next;
}
tmp->next = calloc(1, sizeof(struct nask_ui));
tmp->next->ui_elt_cb = uicb;
tmp->next->do_update = true;
tmp->next->data = data;
tmp->next->next = NULL;
}
static void *ui_thrd(void *arg) {
struct timeval now;
struct timespec wait;
pthread_mutex_lock(&mtx_update);
gettimeofday(&now, NULL);
wait.tv_sec = now.tv_sec + 1;
wait.tv_nsec = now.tv_usec;
while (active == true) {
pthread_cond_timedwait(&cnd_update, &mtx_update, &wait);
if (active == false) break;
}
pthread_mutex_unlock(&mtx_update);
return (NULL);
}
int do_update(void) {
}
int run_ui_thrd(void) {
active = true;
return (pthread_create(&thrd, NULL, &ui_thrd, NULL));
}
int stop_ui_thrd(void) {
active = false;
return (pthread_join(thrd, NULL));
}
void init_ui(void)
{
wnd_main = initscr();
start_color();
init_pair(1, COLOR_RED, COLOR_BLACK);
init_pair(2, COLOR_WHITE, COLOR_WHITE);
init_pair(3, COLOR_BLACK, COLOR_WHITE);
raw();
keypad(DEFWIN, TRUE);
noecho();
cbreak();
}
void free_ui(void)
{
endwin();
clear();
}
int main(int argc, char **argv)
{
init_ui();
if (run_ui_thrd() != 0) {
exit(EXIT_FAILURE);
}
stop_ui_thrd();
free_ui();
return (0);
}
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