source: neercs/trunk/src/effects.c @ 2479 Tweet

/*
 *  neercs        console-based window manager
 *  Copyright (c) 2006 Sam Hocevar <sam@zoy.org>
 *                2008 Jean-Yves Lamoureux <jylam@lnxscene.org>
 *                All Rights Reserved
 *
 *  $Id: effects.c 2360 2008-06-11 16:23:46Z jylam $
 *
 *  This program is free software. It comes without any warranty, to
 *  the extent permitted by applicable law. You can redistribute it
 *  and/or modify it under the terms of the Do What The Fuck You Want
 *  To Public License, Version 2, as published by Sam Hocevar. See
 *  http://sam.zoy.org/wtfpl/COPYING for more details.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <cucul.h>
#include <caca.h>
#include <config.h>
#include <time.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <security/pam_appl.h>
#include <security/pam_misc.h>
#include <pwd.h>

#include "neercs.h"

static int convpam(int num_msg, const struct pam_message **msg,
        struct pam_response **resp, void *appdata_ptr);

void draw_thumbnails(cucul_canvas_t *cv, struct screen_list *screen_list)
{
                char const * const *fonts;
                cucul_dither_t *d;
                cucul_font_t *f;
                uint8_t *buf;
                int i;
                int miniw, minih;

                if(screen_list->count)
                {
                    fonts = cucul_get_font_list();
                    f = cucul_load_font(fonts[0], 0);

                    miniw = cucul_get_canvas_width(screen_list->screen[0]->cv)
                        * cucul_get_font_width(f);
                    minih = cucul_get_canvas_height(screen_list->screen[0]->cv)
                        * cucul_get_font_height(f);
                    buf = malloc(4 * miniw * minih);

#if defined(HAVE_ENDIAN_H)
                    if(__BYTE_ORDER == __BIG_ENDIAN)
#else
                        /* This is compile-time optimised with at least -O1 or -Os */
                        uint32_t const tmp = 0x12345678;
                    if(*(uint8_t const *)&tmp == 0x12)
#endif
                        d = cucul_create_dither(32, miniw, minih, 4 * miniw,
                                                0xff0000, 0xff00, 0xff, 0x0);
                    else
                        d = cucul_create_dither(32, miniw, minih, 4 * miniw,
                                                0xff00, 0xff0000, 0xff000000, 0x0);

                    for(i = 0; i < screen_list->count; i++)
                    {
                        cucul_render_canvas(screen_list->screen[i]->cv, f, buf,
                                            miniw, minih, miniw * 4);
                        cucul_dither_bitmap(cv, 20 * i,
                                            cucul_get_canvas_height(cv) - 6, 19, 6, d, buf);
                        cucul_set_color_ansi(cv, CUCUL_WHITE, CUCUL_BLUE);

                        if(screen_list->pty == i)
                            cucul_draw_cp437_box(cv,20 * i,
                                                 cucul_get_canvas_height(cv) - 6, 19, 6);
                        cucul_printf(cv, 20 * i,
                                     cucul_get_canvas_height(cv) - 6, "(%i)", i+1);
                    }

                    cucul_free_dither(d);
                    cucul_free_font(f);

                    free(buf);
                }

}

/* FIXME, make this stuff more configurable */
void draw_status(cucul_canvas_t *cv, struct screen_list *screen_list)
{
    int x = 0, y = cucul_get_canvas_height(cv) - 1;


        cucul_set_color_ansi(cv, CUCUL_BLUE, CUCUL_BLUE);
        cucul_fill_box(cv,
                       x, y,
                       cucul_get_canvas_width(cv), 1, '#');

/* Hour */
    {
        time_t now = time ((time_t *) 0);
        struct tm *t = localtime(&now);
        char hour[256];
        sprintf(hour, "%02d:%02d", t->tm_hour, t->tm_min);

        cucul_set_color_ansi(cv, CUCUL_LIGHTBLUE, CUCUL_BLUE);
        cucul_printf(cv, x, y,
                     "[");

        cucul_set_color_ansi(cv, CUCUL_DEFAULT, CUCUL_BLUE);
        cucul_printf(cv, x+1, y,
                     hour);
        cucul_set_color_ansi(cv, CUCUL_LIGHTBLUE, CUCUL_BLUE);
        cucul_printf(cv, x + strlen(hour) + 1, y,
                     "]");
        x += 7;

    }

/* Window */
    {
        char text[256];
        sprintf(text, "%d/%d", screen_list->pty+1, screen_list->count);
        x++;
        cucul_set_color_ansi(cv, CUCUL_LIGHTBLUE, CUCUL_BLUE);
        cucul_printf(cv, x, y, "Window:");
        cucul_set_color_ansi(cv, CUCUL_DEFAULT, CUCUL_BLUE);
        cucul_printf(cv, x+8, y, text);
        x+= 8+strlen(text);
    }

/* Window Manager */
    {
        char text[256];

        switch(screen_list->wm_type)
        {
        case WM_CARD:
            strcpy(text, "card");
            break;
        case WM_HSPLIT:
            strcpy(text, "hsplit");
            break;
        case WM_VSPLIT:
            strcpy(text, "vsplit");
            break;
        case WM_FULL:
        default:
            strcpy(text, "full");
            break;

        }

        x++;
        cucul_set_color_ansi(cv, CUCUL_LIGHTBLUE, CUCUL_BLUE);
        cucul_printf(cv, x, y, "WM:");
        cucul_set_color_ansi(cv, CUCUL_DEFAULT, CUCUL_BLUE);
        cucul_printf(cv, x+4, y, text);
        x+= 4+strlen(text);
    }

/* Help (must be the last one )*/
    {
        char text[256];
        sprintf(text, "Help: ctrl-a-h");
        x = cucul_get_canvas_width(cv) - strlen(text);

        cucul_set_color_ansi(cv, CUCUL_DEFAULT, CUCUL_BLUE);
        cucul_printf(cv, x, y, text);
    }


}


void draw_help(cucul_canvas_t *cv, struct screen_list *screen_list)
{
    int w = 65, h = 20;
    int x = (cucul_get_canvas_width(cv) - w) / 2;
    int y = (cucul_get_canvas_height(cv) - h) / 2;


    cucul_set_color_ansi(cv, CUCUL_BLUE, CUCUL_BLUE);
    cucul_fill_box(cv,
                   x, y,
                   w, h, '#');
    cucul_set_color_ansi(cv, CUCUL_DEFAULT, CUCUL_BLUE);
    cucul_draw_cp437_box(cv,
                         x, y,
                         w, h);

    x+=2;
    y++;
    cucul_printf(cv,
                 (cucul_get_canvas_width(cv) - strlen(PACKAGE_STRING)) / 2,
                 y-1,
                 PACKAGE_STRING);
    cucul_printf(cv, x, y++, "Copyright (c) 2006-2008 ");
    cucul_printf(cv, x, y++, "              Sam Hocevar <sam@zoy.org>");
    cucul_printf(cv, x, y++, "              Jean-Yves Lamoureux <jylam@lnxscene.org>");
    cucul_printf(cv, x, y++, "              Pascal Terjan <pterjan@linuxfr.org>");
    cucul_printf(cv, x, y++, "");
    cucul_printf(cv, x, y++, "");
    cucul_printf(cv, x, y++, "All shortcuts are in format 'ctrl-a-X' where X is :");
    cucul_printf(cv, x, y++, "n:\t Next window");
    cucul_printf(cv, x, y++, "p:\t Previous window");
    cucul_printf(cv, x, y++, "w:\t Switch window manager");
    cucul_printf(cv, x, y++, "c:\t Create new window");
    cucul_printf(cv, x, y++, "m:\t Thumbnails");
    cucul_printf(cv, x, y++, "d:\t Detach");
    cucul_printf(cv, x, y++, "k:\t Close window and kill associated process");
    cucul_printf(cv, x, y++, "h:\t This help");
    cucul_printf(cv, x, y++, "");
    cucul_printf(cv, x, y++, "");
    cucul_printf(cv, x, y++, "See http://libcaca.zoy.org/wiki/neercs for more informations");
}


void draw_lock(cucul_canvas_t *cv, struct screen_list *screen_list)
{
    unsigned int i;
    char buffer[1024];
    gethostname(buffer, sizeof(buffer)-1);

    int w = 65, h = 20;
    int x = (cucul_get_canvas_width(cv) - w) / 2;
    int y = (cucul_get_canvas_height(cv) - h) / 2;


    cucul_set_color_ansi(cv, CUCUL_BLUE, CUCUL_BLUE);
    cucul_fill_box(cv,
                   x, y,
                   w, h, '#');
    cucul_set_color_ansi(cv, CUCUL_DEFAULT, CUCUL_BLUE);
    cucul_draw_cp437_box(cv,
                         x, y,
                         w, h);

    x+=2;
    y++;
    cucul_printf(cv,
                 (cucul_get_canvas_width(cv) - strlen(PACKAGE_STRING " locked")) / 2,
                 y-1,
                 PACKAGE_STRING " locked");

    cucul_printf(cv, x, y++, "Please type in your password for %s@%s :", getenv("USER"), buffer);
    y+=2;

    x = (cucul_get_canvas_width(cv)/2) - ((strlen(screen_list->lockpass) / 2) + strlen("Password : "));
    cucul_printf(cv, x, y, "Password : ");
    x+=strlen("Password : ");
    for(i=0; i<strlen(screen_list->lockpass); i++)
    {
        cucul_put_str(cv, x, y, "*");
        x++;
    }


    if(strlen(screen_list->lockmsg))
    {
        x = ((cucul_get_canvas_width(cv) - w) / 2) + (strlen(screen_list->lockmsg));
        y+=2;
        cucul_set_color_ansi(cv, CUCUL_RED, CUCUL_BLUE);
        cucul_printf(cv, x, y, "Error : %s", screen_list->lockmsg);
    }
}



/* FIXME, handle this without assuming this is a password auth */
static int convpam(int num_msg, const struct pam_message **msg,
                struct pam_response **resp, void *appdata_ptr)
{

    struct pam_response *aresp;
    int i;
    aresp = calloc(num_msg, sizeof(*aresp));

    for (i = 0; i < num_msg; ++i)
    {
        switch(msg[i]->msg_style)
        {
        case PAM_PROMPT_ECHO_ON:
        case PAM_PROMPT_ECHO_OFF:
            aresp[i].resp = strdup(appdata_ptr);
            aresp[i].resp_retcode = 0;
            break;
        case PAM_ERROR_MSG:
            break;
        default :
            printf("Unknow message type from PAM\n");
            break;
        }
    }

    *resp = aresp;
    return (PAM_SUCCESS);
}


int validate_lock(struct screen_list *screen_list, char *user, char *pass)
{
    int ret;
    pam_handle_t *pamh=NULL;
    char buffer[100];
    const char *service="neercs";
    struct pam_conv conv = {
        convpam,
        pass,
    };

    ret = pam_start(service, user, &conv, &pamh);
    if(ret!=PAM_SUCCESS)
        return 0;
    pam_set_item(pamh, PAM_RUSER, user);

    ret = gethostname(buffer, sizeof(buffer)-1);
    if (ret)
    {
        perror("failed to look up hostname");
        ret = pam_end(pamh, PAM_ABORT);
        sprintf(screen_list->lockmsg, "Can't get hostname");
        pam_end(pamh, PAM_SUCCESS);
        return 0;
    }

    ret = pam_set_item(pamh, PAM_RHOST, buffer);
    if(ret!=PAM_SUCCESS)
    {
        sprintf(screen_list->lockmsg, "Can't set hostname");
        pam_end(pamh, PAM_SUCCESS);
        return 0;
    }

    ret = pam_authenticate(pamh, 0);
    if(ret!=PAM_SUCCESS)
    {
        sprintf(screen_list->lockmsg, "Can't authenticate");
        pam_end(pamh, PAM_SUCCESS);
        return 0;
    }

    ret = pam_end(pamh, PAM_SUCCESS);
    return 1;
}


/* Close a window by animating it collapsing */
/* Total close time */
#define DELAY 500000.0f
int close_screen_recurrent(struct screen_list* screen_list, struct recurrent* rec, void *user, long long unsigned int t)
{
    long long unsigned int delta = t - rec->start_time;

    screen_list->dont_update_coords = 1;
    rec->kill_me = 0;
    if(delta>=DELAY)
    {
        rec->kill_me = 1;
        remove_screen(screen_list, screen_list->pty, 1);
        screen_list->pty = screen_list->prevpty;
        screen_list->prevpty = 0;
        screen_list->dont_update_coords = 0;
    }
    else
    {
        float r = 1 - ((DELAY - (DELAY - delta)) / DELAY);
        cucul_canvas_t *old, *new;
        struct screen *s = screen_list->screen[screen_list->pty];
        int w = s->orig_w * r;
        int h = s->orig_h * r;

        /* libcucul canvas resize function is bugged, do it by hand  */
        old = s->cv;
        new = cucul_create_canvas(w, h);
        cucul_blit(new, 0, 0, old, NULL);
        s->cv = new;
        cucul_free_canvas(old);
        set_tty_size(s->fd, w, h);

        s->w = w;
        s->h = h;

        s->x =
            (s->orig_x * r) +
            ((s->orig_w/2) - s->w/2);
        s->y =
            (s->orig_y * r) +
            ((s->orig_h/2) - s->h/2);
    }

    return 1;
}