source: MondoRescue/branches/stable/mondo/src/mondoarchive/main.c@ 1108

/***************************************************************************
* $Id: main.c 1108 2007-02-07 23:10:16Z bruno $
*/


/**
 * @file
 * The main file for mondoarchive.
 */

/************************* #include statements *************************/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

#include "my-stuff.h"
#include "../common/mondostructures.h"
#include "../common/libmondo.h"
#include "mondo-cli-EXT.h"

#include "mr_str.h"
#include "mr_file.h"

// for CVS
//static char cvsid[] = "$Id: main.c 1108 2007-02-07 23:10:16Z bruno $";

/************************* external variables *************************/
extern void set_signals(int);
extern int g_current_media_number;
extern void register_pid(pid_t, char *);
extern int g_currentY;
extern bool g_text_mode;
extern char *g_boot_mountpt;
extern bool g_remount_cdrom_at_end, g_remount_floppy_at_end;
extern char *g_mondo_home;
extern char *g_tmpfs_mountpt;
extern char *g_erase_tmpdir_and_scratchdir;
extern char *g_cdrw_drive_is_here;
static char *g_cdrom_drive_is_here = NULL;
static char *g_dvd_drive_is_here = NULL;
extern double g_kernel_version;

/***************** global vars, used only by main.c ******************/
bool g_skip_floppies;
long diffs;
char *ps_options = "auxww";
char *ps_proc_id = "$2";

extern t_bkptype g_backup_media_type;
extern int g_loglevel;

/****************** subroutines used only by main.c ******************/


/**
 * Print a "don't panic" message to the log and a message about the logfile to the screen.
 */
void welcome_to_mondoarchive()
{
    mr_msg(0, "Mondo Archive v%s --- http://www.mondorescue.org",
            PACKAGE_VERSION);
    mr_msg(0, "running on %s architecture", get_architecture());
    mr_msg(0,
            "-----------------------------------------------------------");
    mr_msg(0,
            "NB: Mondo logs almost everything, so don't panic if you see");
    mr_msg(0,
            "some error messages.  Please read them carefully before you");
    mr_msg(0,
            "decide to break out in a cold sweat.    Despite (or perhaps");
    mr_msg(0,
            "because of) the wealth of messages. some users are inclined");
    mr_msg(0,
            "to stop reading this log. If Mondo stopped for some reason,");
    mr_msg(0,
            "chances are it's detailed here.  More than likely there's a");
    mr_msg(0,
            "message at the very end of this log that will tell you what");
    mr_msg(0,
            "is wrong. Please read it!                          -Devteam");
    mr_msg(0,
            "-----------------------------------------------------------");

    mr_msg(0, "Zero...");
    mr_msg(1, "One...");
    mr_msg(2, "Two...");
    mr_msg(3, "Three...");
    mr_msg(4, "Four...");
    mr_msg(5, "Five...");
    mr_msg(6, "Six...");
    mr_msg(7, "Seven...");
    mr_msg(8, "Eight...");
    printf("See %s for details of backup run.\n", MONDO_LOGFILE);
}


extern char *g_magicdev_command;

/**
 * Do whatever is necessary to insure a successful backup on the Linux distribution
 * of the day.
 */
void distro_specific_kludges_at_start_of_mondoarchive()
{
    mr_msg(2, "Unmounting old ramdisks if necessary");
    stop_magicdev_if_necessary();   // for RH+Gnome users
    run_program_and_log_output
        ("umount `mount | grep shm | grep mondo | cut -d' ' -f3`", 2);
    unmount_supermounts_if_necessary(); // for Mandrake users whose CD-ROMs are supermounted
    //  stop_autofs_if_necessary(); // for Xandros users
    mount_boot_if_necessary();  // for Gentoo users with non-mounted /boot partitions
    clean_up_KDE_desktop_if_necessary();    // delete various misc ~/.* files that get in the way
}



/**
 * Undo whatever was done by distro_specific_kludges_at_start_of_mondoarchive().
 */
void distro_specific_kludges_at_end_of_mondoarchive()
{
//  char tmp[500];
    mr_msg(2, "Restarting magicdev if necessary");
    sync();
    restart_magicdev_if_necessary();    // for RH+Gnome users

    mr_msg(2, "Restarting autofs if necessary");
    sync();
    //  restart_autofs_if_necessary(); // for Xandros users

    mr_msg(2, "Restarting supermounts if necessary");
    sync();
    remount_supermounts_if_necessary(); // for Mandrake users

    mr_msg(2, "Unmounting /boot if necessary");
    sync();
    unmount_boot_if_necessary();    // for Gentoo users

//  mr_msg( 2, "Cleaning up KDE desktop");
//  clean_up_KDE_desktop_if_necessary();
}

/*-----------------------------------------------------------*/



/**
 * Backup/verify the user's data.
 * What did you think it did, anyway? :-)
 */
int main(int argc, char *argv[])
{
    struct s_bkpinfo *bkpinfo;
    struct stat stbuf;
    char *tmp;
    int res, retval;
    char *say_at_end;

/* Make sure I'm root; abort if not */
    if (getuid() != 0) {
        fprintf(stderr, "Please run as root.\r\n");
        exit(127);
    }

/* If -V, -v or --version then echo version no. and quit */
    if (argc == 2
        && (!strcmp(argv[argc - 1], "-v") || !strcmp(argv[argc - 1], "-V")
            || !strcmp(argv[argc - 1], "--version"))) {
        printf("mondoarchive v%s\nSee man page for help\n", PACKAGE_VERSION);
        exit(0);
    }

/* Initialize variables */

    malloc_libmondo_global_strings();
    malloc_string(tmp);
    malloc_string(say_at_end);

    res = 0;
    retval = 0;
    diffs = 0;
    say_at_end[0] = '\0';
    printf("Initializing...\n");
    bkpinfo = mr_malloc(sizeof(struct s_bkpinfo));

    /* initialize log file with time stamp */
    unlink(MONDO_LOGFILE);
    mr_msg(0, "Time started: %s", mr_date());

    /* make sure PATH environmental variable allows access to mkfs, fdisk, etc. */
    strncpy(tmp, getenv("PATH"), MAX_STR_LEN - 1);
    tmp[MAX_STR_LEN - 1] = '\0';
    if (strlen(tmp) >= MAX_STR_LEN - 33) {
        fatal_error
            ("Your PATH environmental variable is too long. Please shorten it.");
    }
    strcat(tmp, ":/sbin:/usr/sbin:/usr/local/sbin");
    setenv("PATH", tmp, 1);

    /* Add the ARCH environment variable for ia64 purposes */
    strncpy(tmp, get_architecture(), MAX_STR_LEN - 1);
    tmp[MAX_STR_LEN - 1] = '\0';
    setenv("ARCH", tmp, 1);

    /* Add MONDO_SHARE + others environment variable for mindi */
    setenv_mondo_share();

    if (stat(MONDO_CACHE, &stbuf) != 0) {
        mr_mkdir(MONDO_CACHE,0x755);
    }

    /* Configure the bkpinfo structure, global file paths, etc. */
    g_main_pid = getpid();
    mr_msg(9, "This");

    register_pid(g_main_pid, "mondo");
    set_signals(TRUE);          // catch SIGTERM, etc.
    run_program_and_log_output("dmesg -n1", TRUE);

    mr_msg(9, "Next");
    welcome_to_mondoarchive();
    distro_specific_kludges_at_start_of_mondoarchive();
    sprintf(g_erase_tmpdir_and_scratchdir, "rm -Rf %s %s", bkpinfo->tmpdir,
            bkpinfo->scratchdir);
    g_kernel_version = get_kernel_version();

    if (argc == 4 && !strcmp(argv[1], "getfattr")) {
        g_loglevel = 10;
        g_text_mode = TRUE;
        setup_newt_stuff();
        if (!strstr(argv[2], "filelist")) {
            printf("Sorry - filelist goes first\n");
            finish(1);
        } else {
            finish(get_fattr_list(argv[2], argv[3]));
        }
        finish(0);
    }
    if (argc == 4 && !strcmp(argv[1], "setfattr")) {
        g_loglevel = 10;
//      chdir("/tmp");
        g_text_mode = TRUE;
        setup_newt_stuff();
        finish(set_fattr_list(argv[2], argv[3]));
    }

    if (argc == 3 && !strcmp(argv[1], "wildcards")) {
        g_loglevel = 10;
        g_text_mode = TRUE;
        setup_newt_stuff();
        turn_wildcard_chars_into_literal_chars(tmp, argv[2]);
        printf("in=%s; out=%s\n", argv[2], tmp);
        finish(1);
    }

    if (argc == 4 && !strcmp(argv[1], "getfacl")) {
        g_loglevel = 10;
        g_text_mode = TRUE;
        setup_newt_stuff();
        if (!strstr(argv[2], "filelist")) {
            printf("Sorry - filelist goes first\n");
            finish(1);
        } else {
            finish(get_acl_list(argv[2], argv[3]));
        }
        finish(0);
    }
    if (argc == 4 && !strcmp(argv[1], "setfacl")) {
        g_loglevel = 10;
//      chdir("/tmp");
        g_text_mode = TRUE;
        setup_newt_stuff();
        finish(set_acl_list(argv[2], argv[3]));
    }

    if (argc > 2 && !strcmp(argv[1], "find-cd")) {
        g_loglevel = 10;
        g_text_mode = TRUE;
        setup_newt_stuff();
        if (find_cdrw_device(tmp)) {
            printf("Failed to find CDR-RW drive\n");
        } else {
            printf("CD-RW is at %s\n", tmp);
        }
        tmp[0] = '\0';
        if (find_cdrom_device(tmp, atoi(argv[2]))) {
            printf("Failed to find CD-ROM drive\n");
        } else {
            printf("CD-ROM is at %s\n", tmp);
        }
        finish(0);
    }

    if (argc > 2 && !strcmp(argv[1], "find-dvd")) {
        g_loglevel = 10;
        g_text_mode = TRUE;
        setup_newt_stuff();
        if (find_dvd_device(tmp, atoi(argv[2]))) {
            printf("Failed to find DVD drive\n");
        } else {
            printf("DVD is at %s\n", tmp);
        }
        finish(0);
    }

    if (argc > 2 && !strcmp(argv[1], "disksize")) {
        printf("%s --> %ld\n", argv[2], get_phys_size_of_drive(argv[2]));
        finish(0);
    }
    if (argc > 2 && !strcmp(argv[1], "test-dev")) {
        if (is_dev_an_NTFS_dev(argv[2])) {
            printf("%s is indeed an NTFS dev\n", argv[2]);
        } else {
            printf("%s is _not_ an NTFS dev\n", argv[2]);
        }
        finish(0);
    }

    if (pre_param_configuration(bkpinfo)) {
        fatal_error
            ("Pre-param initialization phase failed. Please review the error messages above, make the specified changes, then try again. Exiting...");
    }

/* Process command line, if there is one. If not, ask user for info. */
    if (argc == 1) {
        g_text_mode = FALSE;
        setup_newt_stuff();
        res = interactively_obtain_media_parameters_from_user(bkpinfo, TRUE);   /* yes, archiving */
        if (res) {
            fatal_error
                ("Syntax error. Please review the parameters you have supplied and try again.");
        }
    } else {
        res = handle_incoming_parameters(argc, argv, bkpinfo);
        if (res) {
            printf
                ("Errors were detected in the command line you supplied.\n");
            printf("Please review the log file - " MONDO_LOGFILE "\n");
            mr_msg(1, "Mondoarchive will now exit.");
            finish(1);
        }
        setup_newt_stuff();
    }

/* Finish configuring global structures */
    if (post_param_configuration(bkpinfo)) {
        fatal_error
            ("Post-param initialization phase failed. Perhaps bad parameters were supplied to mondoarchive? Please review the documentation, error messages and logs. Exiting...");
    }

    log_to_screen
        ("BusyBox's sources are available from http://www.busybox.net");
    sprintf(g_erase_tmpdir_and_scratchdir, "rm -Rf %s %s", bkpinfo->tmpdir,
            bkpinfo->scratchdir);

    /* If we're meant to backup then backup */
    if (bkpinfo->backup_data) {
        res = backup_data(bkpinfo);
        retval += res;
        if (res) {
            strcat(say_at_end,
                   "Data archived. Please check the logs, just as a precaution. ");
        } else {
            strcat(say_at_end, "Data archived OK. ");
        }
    }

/* If we're meant to verify then verify */
    if (bkpinfo->verify_data) {
        res = verify_data(bkpinfo);
        if (res < 0) {
            sprintf(tmp, "%d difference%c found.", -res,
                    (-res != 1) ? 's' : ' ');
            strcat(say_at_end, tmp);
            log_to_screen(tmp);
            res = 0;
        }
        retval += res;
    }

/* Offer to write floppy disk images to physical disks */
    if (bkpinfo->backup_data && !g_skip_floppies) {
        res = offer_to_write_boot_floppies_to_physical_disks(bkpinfo);
        retval += res;
//      res = offer_to_write_boot_ISO_to_physical_CD(bkpinfo);
//      retval += res;
    }

/* Report result of entire operation (success? errors?) */
    if (!retval) {
        mvaddstr_and_log_it(g_currentY++, 0,
                            "Backup and/or verify ran to completion. Everything appears to be fine.");
    } else {
        mvaddstr_and_log_it(g_currentY++, 0,
                            "Backup and/or verify ran to completion. However, errors did occur.");
    }

    if (does_file_exist("/var/cache/mindi/mondorescue.iso")) {
        log_to_screen
            ("/var/cache/mindi/mondorescue.iso, a boot/utility CD, is available if you want it.");
    }


    if (length_of_file("/tmp/changed.files") > 2) {
        if (g_text_mode) {
            log_to_screen
                ("Type 'less /tmp/changed.files' to see which files don't match the archives");
        } else {
            mr_msg(1,
                    "Type 'less /tmp/changed.files' to see which files don't match the archives");
            mr_msg(2, "Calling popup_changelist_from_file()");
            popup_changelist_from_file("/tmp/changed.files");
            mr_msg(2, "Returned from popup_changelist_from_file()");
        }
    } else {
        unlink("/tmp/changed.files");
    }
    log_to_screen(say_at_end);
    sprintf(tmp, "umount %s/tmpfs", bkpinfo->tmpdir);
    run_program_and_log_output(tmp, TRUE);
    run_program_and_log_output(g_erase_tmpdir_and_scratchdir, TRUE);

    run_program_and_log_output("mount", 2);

    system("rm -f /var/cache/mondo-archive/last-backup.aborted");
    system("rm -Rf /tmp.mondo.* /mondo.scratch.*");
    if (!retval) {
        printf("Mondoarchive ran OK.\n");
    } else {
        printf("Errors occurred during backup. Please check logfile.\n");
    }
    distro_specific_kludges_at_end_of_mondoarchive();
    register_pid(0, "mondo");
    set_signals(FALSE);
    chdir("/tmp");              // just in case there's something wrong with g_erase_tmpdir_and_scratchdir
    system(g_erase_tmpdir_and_scratchdir);
    free_libmondo_global_strings();
    mr_free(say_at_end);
    mr_free(tmp);
    mr_free(bkpinfo);

    unlink("/tmp/filelist.full");
    unlink("/tmp/filelist.full.gz");

    if (!g_cdrom_drive_is_here) {
        mr_msg(10, "FYI, g_cdrom_drive_is_here was never used");
    }
    if (!g_dvd_drive_is_here) {
        mr_msg(10, "FYI, g_dvd_drive_is_here was never used");
    }

    /* finalize log file with time stamp */
    mr_msg(0, "Time finished: %s", mr_date());

    if (!g_text_mode) {
        popup_and_OK
            ("Mondo Archive has finished its run. Please press ENTER to return to the shell prompt.");
        log_to_screen("See %s for details of backup run.", MONDO_LOGFILE);
        finish(retval);
    } else {
        printf("See %s for details of backup run.\n", MONDO_LOGFILE);
        exit(retval);
    }

    return EXIT_SUCCESS;
}