/* plymouth.c - updates boot status
 *
 * Copyright (C) 2007 Red Hat, Inc
 *
 * This file is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * This file is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this; see the file COPYING.  If not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 *
 * Written by: Ray Strode <rstrode@redhat.com>
 */
#include "config.h"

#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>

#include "ply-boot-client.h"
#include "ply-command-parser.h"
#include "ply-event-loop.h"
#include "ply-logger.h"
#include "ply-utils.h"

#ifndef PLY_MAX_COMMAND_LINE_SIZE
#define PLY_MAX_COMMAND_LINE_SIZE 4097
#endif

#define KEY_CTRL_C ('\100' ^ 'C')

typedef struct
{
        ply_event_loop_t     *loop;
        ply_boot_client_t    *client;
        ply_command_parser_t *command_parser;
} state_t;

typedef struct
{
        state_t *state;
        char    *command;
        char    *prompt;
        int      number_of_tries_left;
        uint32_t pause : 1;
} password_answer_state_t;

typedef struct
{
        state_t *state;
        char    *command;
        char    *prompt;
        uint32_t pause : 1;
} question_answer_state_t;

typedef struct
{
        state_t *state;
        char    *command;
        char    *keys;
} key_answer_state_t;

static char **
split_string (const char *command,
              const char  delimiter)
{
        const char *p, *q;
        int i, number_of_delimiters;
        char **args;

        number_of_delimiters = 0;
        for (p = command; *p != '\0'; p++) {
                if (*p == delimiter &&
                    *(p + 1) != delimiter)
                        number_of_delimiters++;
        }

        /* there is one more arg that delimiters between args
         * and a trailing NULL arg
         */
        args = calloc (number_of_delimiters + 2, sizeof(char *));
        q = command;
        i = 0;
        for (p = command; *p != '\0'; p++) {
                if (*p == delimiter) {
                        args[i++] = strndup (q, p - q);

                        while (*p == delimiter) {
                                p++;
                        }

                        q = p;
                }

                assert (*q != delimiter);
                assert (i <= number_of_delimiters);
        }

        args[i++] = strndup (q, p - q);

        return args;
}

static bool
answer_via_command (char       *command,
                    const char *answer,
                    int        *exit_status)
{
        bool gave_answer;
        pid_t pid;
        int command_input_sender_fd, command_input_receiver_fd;


        ply_trace ("running command '%s'", command);

        /* answer may be NULL which means,
         * "The daemon can't ask the user questions,
         *   do all the prompting from the client"
         */

        gave_answer = false;
        if (answer != NULL &&
            !ply_open_unidirectional_pipe (&command_input_sender_fd,
                                           &command_input_receiver_fd))
                return false;

        pid = fork ();

        if (pid < 0)
                return false;

        if (pid == 0) {
                char **args;
                args = split_string (command, ' ');
                if (answer != NULL) {
                        close (command_input_sender_fd);
                        dup2 (command_input_receiver_fd, STDIN_FILENO);
                }

                execvp (args[0], args);
                ply_trace ("could not run command: %m");
                _exit (127);
        }

        if (answer != NULL) {
                close (command_input_receiver_fd);

                if (write (command_input_sender_fd, answer, strlen (answer)) < 0)
                        goto out;
        }

        gave_answer = true;
out:
        if (answer != NULL)
                close (command_input_sender_fd);
        waitpid (pid, exit_status, 0);

        return gave_answer;
}

static void
on_failure (state_t *state)
{
        ply_event_loop_exit (state->loop, 1);
}

static void
on_success (state_t *state)
{
        ply_event_loop_exit (state->loop, 0);
}

static void
on_password_answer_failure (password_answer_state_t *answer_state,
                            ply_boot_client_t       *client)
{
        ply_trace ("password answer failure");

        /* plymouthd isn't running for some reason.  If there is a command
         * to run, we'll run it anyway, because it might be important for
         * boot up to continue (to decrypt the root partition or whatever)
         */
        if (answer_state->command != NULL) {
                int exit_status;
                bool command_started;

                ply_trace ("daemon not available, running command on our own");

                exit_status = 127;
                command_started = false;
                while (answer_state->number_of_tries_left > 0) {
                        command_started = answer_via_command (answer_state->command, NULL,
                                                              &exit_status);

                        if (command_started && WIFEXITED (exit_status) &&
                            WEXITSTATUS (exit_status) == 0) {
                                ply_trace ("command was successful");
                                break;
                        }

                        ply_trace ("command failed");
                        answer_state->number_of_tries_left--;
                }

                if (command_started && WIFSIGNALED (exit_status)) {
                        ply_trace ("command died with signal %s", strsignal (WTERMSIG (exit_status)));
                        raise (WTERMSIG (exit_status));
                } else {
                        ply_event_loop_exit (answer_state->state->loop,
                                             WEXITSTATUS (exit_status));
                }
        } else {
                ply_event_loop_exit (answer_state->state->loop, 1);
        }
}

static void
on_password_answer (password_answer_state_t *answer_state,
                    const char              *answer,
                    ply_boot_client_t       *client)
{
        int exit_status;

        exit_status = 127;
        if (answer != NULL && answer[0] != KEY_CTRL_C) { /* a CTRL-C answer means the user canceled */
                if (answer_state->command != NULL) {
                        bool command_started = false;

                        command_started = answer_via_command (answer_state->command, answer,
                                                              &exit_status);

                        if (command_started && (!WIFEXITED (exit_status) ||
                                                WEXITSTATUS (exit_status) != 0)) {
                                answer_state->number_of_tries_left--;

                                if (answer_state->number_of_tries_left > 0) {
                                        ply_boot_client_ask_daemon_for_password (answer_state->state->client,
                                                                                 answer_state->prompt,
                                                                                 (ply_boot_client_answer_handler_t)
                                                                                 on_password_answer,
                                                                                 (ply_boot_client_response_handler_t)
                                                                                 on_password_answer_failure,
                                                                                 answer_state);
                                        return;
                                }
                        }
                } else {
                        write (STDOUT_FILENO, answer, strlen (answer));
                        exit_status = 0;
                }
        } else if (answer == NULL) {
                on_password_answer_failure (answer_state, answer_state->state->client);
        }

        if (WIFSIGNALED (exit_status))
                raise (WTERMSIG (exit_status));

        if (answer_state->pause) {
                ply_boot_client_tell_daemon_to_progress_unpause (client,
                                                                 (ply_boot_client_response_handler_t)
                                                                 (WEXITSTATUS (exit_status) ? on_failure : on_success),
                                                                 (ply_boot_client_response_handler_t)
                                                                 on_failure,
                                                                 answer_state->state);
        } else {
                ply_event_loop_exit (answer_state->state->loop, WEXITSTATUS (exit_status));
        }
}

static void
on_question_answer_failure (question_answer_state_t *answer_state,
                            ply_boot_client_t       *client)
{
        ply_event_loop_exit (answer_state->state->loop, 1);
}

static void
on_question_answer (question_answer_state_t *answer_state,
                    const char              *answer,
                    ply_boot_client_t       *client)
{
        if (answer != NULL) {
                if (answer_state->command != NULL)
                        answer_via_command (answer_state->command, answer, NULL);
                else
                        write (STDOUT_FILENO, answer, strlen (answer));
                if (answer_state->pause) {
                        ply_boot_client_tell_daemon_to_progress_unpause (client,
                                                                         (ply_boot_client_response_handler_t)
                                                                         on_success,
                                                                         (ply_boot_client_response_handler_t)
                                                                         on_failure,
                                                                         answer_state->state);
                } else {
                        ply_event_loop_exit (answer_state->state->loop, 0);
                }
        } else {
                if (answer_state->pause) {
                        ply_boot_client_tell_daemon_to_progress_unpause (client,
                                                                         (ply_boot_client_response_handler_t)
                                                                         on_failure,
                                                                         (ply_boot_client_response_handler_t)
                                                                         on_failure,
                                                                         answer_state->state);
                } else {
                        ply_event_loop_exit (answer_state->state->loop, 1);
                }
        }
}

static void
on_key_answer_failure (key_answer_state_t *answer_state,
                       ply_boot_client_t  *client)
{
        ply_event_loop_exit (answer_state->state->loop, 1);
}

static void
on_key_answer (key_answer_state_t *answer_state,
               const char         *answer,
               ply_boot_client_t  *client)
{
        if (answer == NULL) {
                ply_event_loop_exit (answer_state->state->loop, 1);
                return;
        }

        if (answer_state->command != NULL)
                answer_via_command (answer_state->command, answer, NULL);
        else
        if (answer != NULL)
                write (STDOUT_FILENO, answer, strlen (answer));

        ply_event_loop_exit (answer_state->state->loop, 0);
}

static void
on_multiple_password_answers (password_answer_state_t *answer_state,
                              const char *const       *answers)
{
        bool need_to_ask_user;
        int i;
        int exit_status;

        assert (answer_state->command != NULL);

        ply_trace ("on multiple password answers");

        need_to_ask_user = true;

        if (answers != NULL) {
                ply_trace ("daemon has a few candidate passwords for us to try");
                for (i = 0; answers[i] != NULL; i++) {
                        bool command_started;
                        exit_status = 127;
                        command_started = answer_via_command (answer_state->command, answers[i],
                                                              &exit_status);
                        if (command_started && WIFEXITED (exit_status) &&
                            WEXITSTATUS (exit_status) == 0) {
                                need_to_ask_user = false;
                                break;
                        }
                }
        } else {
                ply_trace ("daemon has no candidate passwords for us to try");
        }

        if (need_to_ask_user) {
                ply_boot_client_ask_daemon_for_password (answer_state->state->client,
                                                         answer_state->prompt,
                                                         (ply_boot_client_answer_handler_t)
                                                         on_password_answer,
                                                         (ply_boot_client_response_handler_t)
                                                         on_password_answer_failure, answer_state);
                return;
        }

        ply_event_loop_exit (answer_state->state->loop, 0);
}

static void
on_disconnect (state_t *state)
{
        bool wait;
        int status = 0;

        wait = false;
        ply_command_parser_get_options (state->command_parser,
                                        "wait", &wait,
                                        NULL
                                        );

        if (!wait) {
                ply_error ("error: unexpectedly disconnected from boot status daemon");
                status = 2;
        }

        ply_trace ("disconnect");
        ply_event_loop_exit (state->loop, status);
}

static void
on_password_request_execute (password_answer_state_t *password_answer_state,
                             ply_boot_client_t       *client)
{
        ply_trace ("executing password request (command %s)",
                   password_answer_state->command);

        if (password_answer_state->command != NULL) {
                ply_boot_client_ask_daemon_for_cached_passwords (client,
                                                                 (ply_boot_client_multiple_answers_handler_t)
                                                                 on_multiple_password_answers,
                                                                 (ply_boot_client_response_handler_t)
                                                                 on_password_answer_failure, password_answer_state);
        } else {
                ply_boot_client_ask_daemon_for_password (client,
                                                         password_answer_state->prompt,
                                                         (ply_boot_client_answer_handler_t)
                                                         on_password_answer,
                                                         (ply_boot_client_response_handler_t)
                                                         on_password_answer_failure, password_answer_state);
        }
}

static void
on_password_request (state_t    *state,
                     const char *command)
{
        char *prompt;
        char *program;
        int number_of_tries;
        bool dont_pause;
        password_answer_state_t *password_answer_state;

        prompt = NULL;
        program = NULL;
        number_of_tries = 0;
        dont_pause = false;

        ply_trace ("Password request");
        ply_command_parser_get_command_options (state->command_parser,
                                                command,
                                                "command", &program,
                                                "prompt", &prompt,
                                                "number-of-tries", &number_of_tries,
                                                "dont-pause-progress", &dont_pause,
                                                NULL);

        if (number_of_tries <= 0)
                number_of_tries = INT_MAX;

        password_answer_state = calloc (1, sizeof(password_answer_state_t));
        password_answer_state->state = state;
        password_answer_state->command = program;
        password_answer_state->prompt = prompt;
        password_answer_state->number_of_tries_left = number_of_tries;
        password_answer_state->pause = !dont_pause;
        if (password_answer_state->pause) {
                ply_boot_client_tell_daemon_to_progress_pause (state->client,
                                                               (ply_boot_client_response_handler_t)
                                                               on_password_request_execute,
                                                               (ply_boot_client_response_handler_t)
                                                               on_password_answer_failure,
                                                               password_answer_state);
        } else {
                on_password_request_execute (password_answer_state, state->client);
        }
}

static void
on_question_request_execute (question_answer_state_t *question_answer_state,
                             ply_boot_client_t       *client)
{
        ply_boot_client_ask_daemon_question (client,
                                             question_answer_state->prompt,
                                             (ply_boot_client_answer_handler_t)
                                             on_question_answer,
                                             (ply_boot_client_response_handler_t)
                                             on_question_answer_failure,
                                             question_answer_state);
}


static void
on_question_request (state_t    *state,
                     const char *command)
{
        char *prompt;
        char *program;
        bool dont_pause;
        question_answer_state_t *question_answer_state;

        prompt = NULL;
        program = NULL;
        dont_pause = false;

        ply_command_parser_get_command_options (state->command_parser,
                                                command,
                                                "command", &program,
                                                "prompt", &prompt,
                                                "dont-pause-progress", &dont_pause,
                                                NULL);

        question_answer_state = calloc (1, sizeof(question_answer_state_t));
        question_answer_state->state = state;
        question_answer_state->command = program;
        question_answer_state->prompt = prompt;
        question_answer_state->pause = !dont_pause;
        if (question_answer_state->pause) {
                ply_boot_client_tell_daemon_to_progress_pause (state->client,
                                                               (ply_boot_client_response_handler_t)
                                                               on_question_request_execute,
                                                               (ply_boot_client_response_handler_t)
                                                               on_question_answer_failure,
                                                               question_answer_state);
        } else {
                on_question_request_execute (question_answer_state, state->client);
        }
}

static void
on_display_message_request (state_t    *state,
                            const char *command)
{
        char *text;

        text = NULL;
        ply_command_parser_get_command_options (state->command_parser,
                                                command,
                                                "text", &text,
                                                NULL);
        if (text != NULL) {
                ply_boot_client_tell_daemon_to_display_message (state->client,
                                                                text,
                                                                (ply_boot_client_response_handler_t)
                                                                on_success,
                                                                (ply_boot_client_response_handler_t)
                                                                on_failure, state);
                free (text);
        }
}

static void
on_hide_message_request (state_t    *state,
                         const char *command)
{
        char *text;

        text = NULL;
        ply_command_parser_get_command_options (state->command_parser,
                                                command,
                                                "text", &text,
                                                NULL);
        if (text != NULL) {
                ply_boot_client_tell_daemon_to_hide_message (state->client,
                                                             text,
                                                             (ply_boot_client_response_handler_t)
                                                             on_success,
                                                             (ply_boot_client_response_handler_t)
                                                             on_failure, state);
                free (text);
        }
}

static void
on_keystroke_request (state_t    *state,
                      const char *command)
{
        char *keys;
        char *program;

        keys = NULL;
        program = NULL;

        ply_command_parser_get_command_options (state->command_parser,
                                                command,
                                                "command", &program,
                                                "keys", &keys,
                                                NULL);
        key_answer_state_t *key_answer_state;
        key_answer_state = calloc (1, sizeof(key_answer_state_t));
        key_answer_state->state = state;
        key_answer_state->keys = keys;
        key_answer_state->command = program;
        ply_boot_client_ask_daemon_to_watch_for_keystroke (state->client,
                                                           keys,
                                                           (ply_boot_client_answer_handler_t)
                                                           on_key_answer,
                                                           (ply_boot_client_response_handler_t)
                                                           on_key_answer_failure,
                                                           key_answer_state);
}

static void
on_keystroke_ignore (state_t    *state,
                     const char *command)
{
        char *keys;

        keys = NULL;

        ply_command_parser_get_command_options (state->command_parser,
                                                command,
                                                "keys", &keys,
                                                NULL);

        ply_boot_client_ask_daemon_to_ignore_keystroke (state->client,
                                                        keys,
                                                        (ply_boot_client_answer_handler_t)
                                                        on_success,
                                                        (ply_boot_client_response_handler_t)
                                                        on_failure, state);
}

static void
on_progress_pause_request (state_t    *state,
                           const char *command)
{
        ply_boot_client_tell_daemon_to_progress_pause (state->client,
                                                       (ply_boot_client_response_handler_t)
                                                       on_success,
                                                       (ply_boot_client_response_handler_t)
                                                       on_failure, state);
}


static void
on_progress_unpause_request (state_t    *state,
                             const char *command)
{
        ply_boot_client_tell_daemon_to_progress_unpause (state->client,
                                                         (ply_boot_client_response_handler_t)
                                                         on_success,
                                                         (ply_boot_client_response_handler_t)
                                                         on_failure, state);
}

static void
on_report_error_request (state_t    *state,
                         const char *command)
{
        ply_boot_client_tell_daemon_about_error (state->client,
                                                 (ply_boot_client_response_handler_t)
                                                 on_success,
                                                 (ply_boot_client_response_handler_t)
                                                 on_failure, state);
}

static void
on_deactivate_request (state_t    *state,
                       const char *command)
{
        ply_boot_client_tell_daemon_to_deactivate (state->client,
                                                   (ply_boot_client_response_handler_t)
                                                   on_success,
                                                   (ply_boot_client_response_handler_t)
                                                   on_failure, state);
}

static void
on_reactivate_request (state_t    *state,
                       const char *command)
{
        ply_boot_client_tell_daemon_to_reactivate (state->client,
                                                   (ply_boot_client_response_handler_t)
                                                   on_success,
                                                   (ply_boot_client_response_handler_t)
                                                   on_failure, state);
}

static void
on_quit_request (state_t    *state,
                 const char *command)
{
        bool should_retain_splash;

        should_retain_splash = false;
        ply_command_parser_get_command_options (state->command_parser,
                                                command,
                                                "retain-splash", &should_retain_splash,
                                                NULL);

        ply_boot_client_tell_daemon_to_quit (state->client,
                                             should_retain_splash,
                                             (ply_boot_client_response_handler_t)
                                             on_success,
                                             (ply_boot_client_response_handler_t)
                                             on_failure, state);
}

static void
on_update_root_fs_request (state_t    *state,
                           const char *command)
{
        char *root_dir;
        bool is_read_write;

        root_dir = NULL;
        is_read_write = false;
        ply_command_parser_get_command_options (state->command_parser,
                                                command,
                                                "new-root-dir", &root_dir,
                                                "read-write", &is_read_write,
                                                NULL);

        if (root_dir != NULL) {
                ply_boot_client_tell_daemon_to_change_root (state->client, root_dir,
                                                            (ply_boot_client_response_handler_t)
                                                            on_success,
                                                            (ply_boot_client_response_handler_t)
                                                            on_failure, state);
        }

        if (is_read_write) {
                ply_boot_client_tell_daemon_system_is_initialized (state->client,
                                                                   (ply_boot_client_response_handler_t)
                                                                   on_success,
                                                                   (ply_boot_client_response_handler_t)
                                                                   on_failure, state);
        }
}

static void
on_show_splash_request (state_t    *state,
                        const char *command)
{
        ply_boot_client_tell_daemon_to_show_splash (state->client,
                                                    (ply_boot_client_response_handler_t)
                                                    on_success,
                                                    (ply_boot_client_response_handler_t)
                                                    on_failure, state);
}

static void
on_hide_splash_request (state_t    *state,
                        const char *command)
{
        ply_boot_client_tell_daemon_to_hide_splash (state->client,
                                                    (ply_boot_client_response_handler_t)
                                                    on_success,
                                                    (ply_boot_client_response_handler_t)
                                                    on_failure, state);
}

static void
on_update_request (state_t    *state,
                   const char *command)
{
        char *status;

        status = NULL;
        ply_command_parser_get_command_options (state->command_parser,
                                                command,
                                                "status", &status,
                                                NULL);

        if (status != NULL) {
                ply_boot_client_update_daemon (state->client, status,
                                               (ply_boot_client_response_handler_t)
                                               on_success,
                                               (ply_boot_client_response_handler_t)
                                               on_failure, state);
        }
}

static void
on_change_mode_request (state_t    *state,
                        const char *command)
{
        bool boot_up;
        bool shutdown;
        bool updates;

        boot_up = false;
        shutdown = false;
        updates = false;
        ply_command_parser_get_command_options (state->command_parser,
                                                command,
                                                "boot-up", &boot_up,
                                                "shutdown", &shutdown,
                                                "updates", &updates,
                                                NULL);

        if (boot_up) {
                ply_boot_client_change_mode (state->client, "boot-up",
                                             (ply_boot_client_response_handler_t)
                                             on_success,
                                             (ply_boot_client_response_handler_t)
                                             on_failure, state);
        } else if (shutdown) {
                ply_boot_client_change_mode (state->client, "shutdown",
                                             (ply_boot_client_response_handler_t)
                                             on_success,
                                             (ply_boot_client_response_handler_t)
                                             on_failure, state);
        } else if (updates) {
                ply_boot_client_change_mode (state->client, "updates",
                                             (ply_boot_client_response_handler_t)
                                             on_success,
                                             (ply_boot_client_response_handler_t)
                                             on_failure, state);
        }
}

static void
on_system_update_request (state_t    *state,
                          const char *command)
{
        int progress;

        progress = 0;
        ply_command_parser_get_command_options (state->command_parser,
                                                command,
                                                "progress", &progress,
                                                NULL);

        if (progress >= 0 && progress <= 100) {
                char *progress_string = NULL;

                asprintf (&progress_string, "%d", progress);

                ply_boot_client_system_update (state->client,
                                               progress_string,
                                               (ply_boot_client_response_handler_t)
                                               on_success,
                                               (ply_boot_client_response_handler_t)
                                               on_failure, state);
                free (progress_string);
        } else {
                ply_error ("couldn't set invalid percentage: %i", progress);
                ply_event_loop_exit (state->loop, 1);
        }
}

int
main (int    argc,
      char **argv)
{
        state_t state = { 0 };
        bool should_help, should_quit, should_ping, should_check_for_active_vt, should_sysinit, should_ask_for_password, should_show_splash, should_hide_splash, should_wait, should_be_verbose, report_error, should_get_plugin_path;
        bool is_connected;
        char *status, *chroot_dir, *ignore_keystroke;
        int exit_code;

        exit_code = 0;

        signal (SIGPIPE, SIG_IGN);

        state.loop = ply_event_loop_new ();
        state.client = ply_boot_client_new ();
        state.command_parser = ply_command_parser_new ("plymouth", "Splash control client");

        ply_command_parser_add_options (state.command_parser,
                                        "help", "This help message", PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "debug", "Enable verbose debug logging", PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "get-splash-plugin-path", "Get directory where splash plugins are installed", PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "newroot", "Tell boot daemon that new root filesystem is mounted", PLY_COMMAND_OPTION_TYPE_STRING,
                                        "quit", "Tell boot daemon to quit", PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "ping", "Check if boot daemon is running", PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "has-active-vt", "Check if boot daemon has an active vt", PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "sysinit", "Tell boot daemon root filesystem is mounted read-write", PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "show-splash", "Show splash screen", PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "hide-splash", "Hide splash screen", PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "ask-for-password", "Ask user for password", PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "ignore-keystroke", "Remove sensitivity to a keystroke", PLY_COMMAND_OPTION_TYPE_STRING,
                                        "update", "Tell boot daemon an update about boot progress", PLY_COMMAND_OPTION_TYPE_STRING,
                                        "details", "Tell boot daemon there were errors during boot", PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "wait", "Wait for boot daemon to quit", PLY_COMMAND_OPTION_TYPE_FLAG,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "change-mode", "Change the operation mode",
                                        (ply_command_handler_t)
                                        on_change_mode_request, &state,
                                        "boot-up", "Starting the system up",
                                        PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "shutdown", "Shutting the system down",
                                        PLY_COMMAND_OPTION_TYPE_FLAG,
                                        "updates", "Applying updates",
                                        PLY_COMMAND_OPTION_TYPE_FLAG,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "system-update", "Tell the daemon about updates progress",
                                        (ply_command_handler_t)
                                        on_system_update_request, &state,
                                        "progress", "The percentage progress of the updates",
                                        PLY_COMMAND_OPTION_TYPE_INTEGER,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "update", "Tell daemon about boot status changes",
                                        (ply_command_handler_t)
                                        on_update_request, &state,
                                        "status", "Tell daemon the current boot status",
                                        PLY_COMMAND_OPTION_TYPE_STRING,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "update-root-fs", "Tell daemon about root filesystem changes",
                                        (ply_command_handler_t)
                                        on_update_root_fs_request, &state,
                                        "new-root-dir", "Root filesystem is about to change",
                                        PLY_COMMAND_OPTION_TYPE_STRING,
                                        "read-write", "Root filesystem is no longer read-only",
                                        PLY_COMMAND_OPTION_TYPE_FLAG,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "show-splash", "Tell daemon to show splash screen",
                                        (ply_command_handler_t)
                                        on_show_splash_request, &state,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "hide-splash", "Tell daemon to hide splash screen",
                                        (ply_command_handler_t)
                                        on_hide_splash_request, &state,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "ask-for-password", "Ask user for password",
                                        (ply_command_handler_t)
                                        on_password_request, &state,
                                        "command", "Command to send password to via standard input",
                                        PLY_COMMAND_OPTION_TYPE_STRING,
                                        "prompt", "Message to display when asking for password",
                                        PLY_COMMAND_OPTION_TYPE_STRING,
                                        "number-of-tries", "Number of times to ask before giving up (requires --command)",
                                        PLY_COMMAND_OPTION_TYPE_INTEGER,
                                        "dont-pause-progress", "Don't pause boot progress bar while asking",
                                        PLY_COMMAND_OPTION_TYPE_FLAG,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "ask-question", "Ask user a question",
                                        (ply_command_handler_t)
                                        on_question_request, &state,
                                        "command", "Command to send the answer to via standard input",
                                        PLY_COMMAND_OPTION_TYPE_STRING,
                                        "prompt", "Message to display when asking the question",
                                        PLY_COMMAND_OPTION_TYPE_STRING,
                                        "dont-pause-progress", "Don't pause boot progress bar while asking",
                                        PLY_COMMAND_OPTION_TYPE_FLAG,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "display-message", "Display a message",
                                        (ply_command_handler_t)
                                        on_display_message_request, &state,
                                        "text", "The message text",
                                        PLY_COMMAND_OPTION_TYPE_STRING,
                                        NULL);
        ply_command_parser_add_command_alias (state.command_parser,
                                              "display-message",
                                              "message");
        ply_command_parser_add_command (state.command_parser,
                                        "hide-message", "Hide a message",
                                        (ply_command_handler_t)
                                        on_hide_message_request, &state,
                                        "text", "The message text",
                                        PLY_COMMAND_OPTION_TYPE_STRING,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "watch-keystroke", "Become sensitive to a keystroke",
                                        (ply_command_handler_t)
                                        on_keystroke_request, &state,
                                        "command", "Command to send keystroke to via standard input",
                                        PLY_COMMAND_OPTION_TYPE_STRING,
                                        "keys", "Keys to become sensitive to",
                                        PLY_COMMAND_OPTION_TYPE_STRING,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "ignore-keystroke", "Remove sensitivity to a keystroke",
                                        (ply_command_handler_t)
                                        on_keystroke_ignore, &state,
                                        "keys", "Keys to remove sensitivity to",
                                        PLY_COMMAND_OPTION_TYPE_STRING,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "pause-progress", "Pause boot progress bar",
                                        (ply_command_handler_t)
                                        on_progress_pause_request, &state,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "unpause-progress", "Unpause boot progress bar",
                                        (ply_command_handler_t)
                                        on_progress_unpause_request, &state,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "report-error", "Tell boot daemon there were errors during boot",
                                        (ply_command_handler_t)
                                        on_report_error_request, &state,
                                        NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "deactivate", "Tell boot daemon to deactivate",
                                        (ply_command_handler_t)
                                        on_deactivate_request, &state, NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "reactivate", "Tell boot daemon to reactivate",
                                        (ply_command_handler_t)
                                        on_reactivate_request, &state, NULL);

        ply_command_parser_add_command (state.command_parser,
                                        "quit", "Tell boot daemon to quit",
                                        (ply_command_handler_t)
                                        on_quit_request, &state,
                                        "retain-splash", "Don't explicitly hide boot splash on exit",
                                        PLY_COMMAND_OPTION_TYPE_FLAG, NULL);

        if (!ply_command_parser_parse_arguments (state.command_parser, state.loop, argv, argc)) {
                char *help_string;

                help_string = ply_command_parser_get_help_string (state.command_parser);

                ply_error ("%s", help_string);

                free (help_string);
                return 1;
        }

        ply_command_parser_get_options (state.command_parser,
                                        "help", &should_help,
                                        "debug", &should_be_verbose,
                                        "get-splash-plugin-path", &should_get_plugin_path,
                                        "newroot", &chroot_dir,
                                        "quit", &should_quit,
                                        "ping", &should_ping,
                                        "has-active-vt", &should_check_for_active_vt,
                                        "sysinit", &should_sysinit,
                                        "show-splash", &should_show_splash,
                                        "hide-splash", &should_hide_splash,
                                        "ask-for-password", &should_ask_for_password,
                                        "ignore-keystroke", &ignore_keystroke,
                                        "update", &status,
                                        "wait", &should_wait,
                                        "details", &report_error,
                                        NULL);

        if (should_help || argc < 2) {
                char *help_string;

                help_string = ply_command_parser_get_help_string (state.command_parser);

                if (argc < 2)
                        fprintf (stderr, "%s", help_string);
                else
                        printf ("%s", help_string);

                free (help_string);
                return 0;
        }

        if (ply_kernel_command_line_has_argument ("plymouth.debug") && !ply_is_tracing ())
                ply_toggle_tracing ();

        if (should_be_verbose && !ply_is_tracing ())
                ply_toggle_tracing ();

        if (should_get_plugin_path) {
                printf ("%s\n", PLYMOUTH_PLUGIN_PATH);
                return 0;
        }

        is_connected = ply_boot_client_connect (state.client,
                                                (ply_boot_client_disconnect_handler_t)
                                                on_disconnect, &state);
        if (!is_connected) {
                ply_trace ("daemon not running");

                if (should_ping) {
                        ply_trace ("ping failed");
                        return 1;
                }
                if (should_check_for_active_vt) {
                        ply_trace ("has active vt? failed");
                        return 1;
                }
                if (should_wait) {
                        ply_trace ("no need to wait");
                        return 0;
                }
        }

        ply_boot_client_attach_to_event_loop (state.client, state.loop);

        if (should_show_splash) {
                ply_boot_client_tell_daemon_to_show_splash (state.client,
                                                            (ply_boot_client_response_handler_t)
                                                            on_success,
                                                            (ply_boot_client_response_handler_t)
                                                            on_failure, &state);
        } else if (should_hide_splash) {
                ply_boot_client_tell_daemon_to_hide_splash (state.client,
                                                            (ply_boot_client_response_handler_t)
                                                            on_success,
                                                            (ply_boot_client_response_handler_t)
                                                            on_failure, &state);
        } else if (should_quit) {
                ply_boot_client_tell_daemon_to_quit (state.client,
                                                     false,
                                                     (ply_boot_client_response_handler_t)
                                                     on_success,
                                                     (ply_boot_client_response_handler_t)
                                                     on_failure, &state);
        } else if (should_ping) {
                ply_boot_client_ping_daemon (state.client,
                                             (ply_boot_client_response_handler_t)
                                             on_success,
                                             (ply_boot_client_response_handler_t)
                                             on_failure, &state);
        } else if (should_check_for_active_vt) {
                ply_boot_client_ask_daemon_has_active_vt (state.client,
                                                          (ply_boot_client_response_handler_t)
                                                          on_success,
                                                          (ply_boot_client_response_handler_t)
                                                          on_failure, &state);
        } else if (status != NULL) {
                ply_boot_client_update_daemon (state.client, status,
                                               (ply_boot_client_response_handler_t)
                                               on_success,
                                               (ply_boot_client_response_handler_t)
                                               on_failure, &state);
        } else if (should_ask_for_password) {
                password_answer_state_t answer_state = { 0 };

                answer_state.state = &state;
                answer_state.number_of_tries_left = 1;
                ply_boot_client_ask_daemon_for_password (state.client,
                                                         NULL,
                                                         (ply_boot_client_answer_handler_t)
                                                         on_password_answer,
                                                         (ply_boot_client_response_handler_t)
                                                         on_password_answer_failure, &answer_state);
        } else if (ignore_keystroke) {
                ply_boot_client_ask_daemon_to_ignore_keystroke (state.client,
                                                                ignore_keystroke,
                                                                (ply_boot_client_answer_handler_t)
                                                                on_success,
                                                                (ply_boot_client_response_handler_t)
                                                                on_failure, &state);
        } else if (should_sysinit) {
                ply_boot_client_tell_daemon_system_is_initialized (state.client,
                                                                   (ply_boot_client_response_handler_t)
                                                                   on_success,
                                                                   (ply_boot_client_response_handler_t)
                                                                   on_failure, &state);
        } else if (chroot_dir) {
                ply_boot_client_tell_daemon_to_change_root (state.client, chroot_dir,
                                                            (ply_boot_client_response_handler_t)
                                                            on_success,
                                                            (ply_boot_client_response_handler_t)
                                                            on_failure, &state);
        } else if (should_wait) {
        } // Do nothing
        else if (report_error) {
                ply_boot_client_tell_daemon_about_error (state.client,
                                                         (ply_boot_client_response_handler_t)
                                                         on_success,
                                                         (ply_boot_client_response_handler_t)
                                                         on_failure, &state);
        }

        exit_code = ply_event_loop_run (state.loop);

        ply_boot_client_free (state.client);

        ply_event_loop_free (state.loop);

        return exit_code;
}
/* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */
