135 lines
3.4 KiB
C
135 lines
3.4 KiB
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
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* This file is part of ToaruOS and is released under the terms
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* of the NCSA / University of Illinois License - see LICENSE.md
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* Copyright (C) 2014-2017 K. Lange
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*
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* gsudo - graphical implementation of sudo
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*
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* probably even less secure than the original
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*
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <toaru/auth.h>
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#include <toaru/yutani.h>
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#include <toaru/graphics.h>
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#include <toaru/sdf.h>
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#define FONT_SIZE_MAIN 20
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#define FONT_SIZE_PASSWD 25
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uint32_t child = 0;
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int main(int argc, char ** argv) {
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int fails = 0;
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if (argc < 2) {
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return 1;
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}
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int width = 300;
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int height = 200;
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int uid;
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int error = 0;
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yutani_t * yctx = yutani_init();
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int left = (yctx->display_width - width) / 2;
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int top = (yctx->display_height - height) / 2;
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yutani_window_t * window = yutani_window_create(yctx, width, height);
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yutani_window_move(yctx, window, left, top);
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gfx_context_t * ctx = init_graphics_yutani_double_buffer(window);
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while (1) {
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char * username = getenv("USER");
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char * password = calloc(sizeof(char) * 1024,1);
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int i = 0;
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while (1) {
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draw_fill(ctx, rgba(0,0,0,200));
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int h = height-1;
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int w = width-1;
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draw_line(ctx, 0,0,0,h, rgb(255,0,0));
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draw_line(ctx, w,w,0,h, rgb(255,0,0));
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draw_line(ctx, 0,w,0,0, rgb(255,0,0));
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draw_line(ctx, 0,w,h,h, rgb(255,0,0));
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char prompt_message[512];
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sprintf(prompt_message, "Enter password for '%s'", username);
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draw_sdf_string(ctx, (width - draw_sdf_string_width(prompt_message, FONT_SIZE_MAIN, SDF_FONT_THIN)) / 2, 20, prompt_message, FONT_SIZE_MAIN, rgb(255, 255, 255), SDF_FONT_THIN);
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sprintf(prompt_message, "requested by %s", argv[1]);
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draw_sdf_string(ctx, (width - draw_sdf_string_width(prompt_message, FONT_SIZE_MAIN, SDF_FONT_THIN)) / 2, 150, prompt_message, FONT_SIZE_MAIN, rgb(255, 255, 255), SDF_FONT_THIN);
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if (error) {
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sprintf(prompt_message, "Try again. %d failures.", fails);
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draw_sdf_string(ctx, (width - draw_sdf_string_width(prompt_message, FONT_SIZE_MAIN, SDF_FONT_THIN)) / 2, 50, prompt_message, FONT_SIZE_MAIN, rgb(255, 0, 0), SDF_FONT_THIN);
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}
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char password_circles[512] = {0};;
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strcpy(password_circles, "");
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for (unsigned int i = 0; i < strlen(password) && i < 512/4; ++i) {
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strcat(password_circles, "\007");
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}
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draw_sdf_string(ctx, (width - draw_sdf_string_width(password_circles, FONT_SIZE_PASSWD, SDF_FONT_THIN)) / 2, 80, password_circles, FONT_SIZE_PASSWD, rgb(255, 255, 255), SDF_FONT_THIN);
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flip(ctx);
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yutani_flip(yctx, window);
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yutani_msg_t * msg = yutani_poll(yctx);
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switch (msg->type) {
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case YUTANI_MSG_KEY_EVENT:
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{
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struct yutani_msg_key_event * ke = (void*)msg->data;
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if (ke->event.action == KEY_ACTION_DOWN) {
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if (ke->event.keycode == KEY_ESCAPE) {
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return 1;
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}
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if (ke->event.keycode == '\n') {
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goto _done;
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} else if (ke->event.key == 8) {
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if (i > 0) i--;
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password[i] = '\0';
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} else if (ke->event.key) {
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password[i] = ke->event.key;
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password[i+1] = '\0';
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i++;
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}
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}
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}
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break;
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}
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}
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_done:
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uid = toaru_auth_check_pass(username, password);
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if (uid < 0) {
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fails++;
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if (fails == 3) {
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break;
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}
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error = 1;
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continue;
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}
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char ** args = &argv[1];
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return execvp(args[0], args);
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}
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return 1;
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}
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