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/*
 * Guillaume Cottenceau (gc)
 *
 * Copyright 2000 Mandriva
 *
 * This software may be freely redistributed under the terms of the GNU
 * public license.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "params.h"
#include "utils.h"
#include "automatic.h"
#include "log.h"
#include "bootsplash.h"

static struct param_elem params[50];
static int param_number = 0;

void process_cmdline(void)
{
    char buf[512];
    int size, i;
    int fd = -1; 

    if (IS_TESTING) {
        log_message("TESTING: opening cmdline... ");

        if ((fd = open("cmdline", O_RDONLY)) == -1)
            log_message("TESTING: could not open cmdline");
    }

    if (fd == -1) {
        log_message("opening /proc/cmdline... ");

        if ((fd = open("/proc/cmdline", O_RDONLY)) == -1)
            fatal_error("could not open /proc/cmdline");
    }

    size = read(fd, buf, sizeof(buf));
    buf[size-1] = '\0'; // -1 to eat the \n
    close(fd);

    log_message("\t%s", buf);

    i = 0;
    while (buf[i] != '\0') {
        char *name, *value = NULL;
        int j = i;
        while (buf[i] != ' ' && buf[i] != '=' && buf[i] != '\0')
            i++;
        if (i == j) {
            i++;
            continue;
        }
        name = _memdup(&buf[j], i-j + 1);
        name[i-j] = '\0';

        if (buf[i] == '=') {
            int k = i+1;
            i++;
            while (buf[i] != ' ' && buf[i] != '\0')
                i++;
            value = _memdup(&buf[k], i-k + 1);
            value[i-k] = '\0';
        }

        params[param_number].name = name;
        params[param_number].value = value;
        param_number++;
        if (!strcmp(name, "changedisk")) set_param(MODE_CHANGEDISK);
        if (!strcmp(name, "updatemodules") ||
            !strcmp(name, "thirdparty")) set_param(MODE_THIRDPARTY);
        if (!strcmp(name, "rescue") ||
                !strcmp(name, "kamethod")) set_param(MODE_RESCUE);
        if (!strcmp(name, "rescue")) set_param(MODE_RESCUE);
        if (!strcmp(name, "keepmounted")) set_param(MODE_KEEP_MOUNTED);
        if (!strcmp(name, "noauto")) set_param(MODE_NOAUTO);
        if (!strcmp(name, "netauto")) set_param(MODE_NETAUTO);
        if (!strcmp(name, "debugstage1")) set_param(MODE_DEBUGSTAGE1);
        if (!strcmp(name, "automatic")) {
            set_param(MODE_AUTOMATIC);
            grab_automatic_params(value);
        }
        if (buf[i] == '\0')
            break;
        i++;
    }

    if (IS_AUTOMATIC && strcmp(get_auto_value("thirdparty"), "")) {
        set_param(MODE_THIRDPARTY);
    }

    log_message("\tgot %d args", param_number);
}


int stage1_mode = 0;

int get_param(int i)
{
#ifdef SPAWN_INTERACTIVE
    static int fd = 0;
    char buf[5000];
    char * ptr;
    int nb;

    if (fd <= 0) {
        fd = open(interactive_fifo, O_RDONLY);
        if (fd == -1)
            return (stage1_mode & i);
        fcntl(fd, F_SETFL, O_NONBLOCK);
    }

    if (fd > 0) {
        if ((nb = read(fd, buf, sizeof(buf))) > 0) {
            buf[nb] = '\0';
            ptr = buf;
            while ((ptr = strstr(ptr, "+ "))) {
                if (!strncmp(ptr+2, "rescue", 6)) set_param(MODE_RESCUE);
                ptr++;
            }
            ptr = buf;
            while ((ptr = strstr(ptr, "- "))) {
                if (!strncmp(ptr+2, "rescue", 6)) unset_param(MODE_RESCUE);
                ptr++;
            }
        }
    }
#endif

    return (stage1_mode & i);
}

char * get_param_valued(char *param_name)
{
    int i;
    for (i = 0; i < param_number ; i++)
        if (!strcmp(params[i].name, param_name))
            return params[i].value;

    return NULL;
}

void set_param_valued(char *param_name, char *param_value)
{
    params[param_number].name = param_name;
    params[param_number].value = param_value;
    param_number++;
}

void set_param(int i)
{
    stage1_mode |= i;
}

void unset_param(int i)
{
    stage1_mode &= ~i;
}

void unset_automatic(void)
{
    log_message("unsetting automatic");
    unset_param(MODE_AUTOMATIC);
    exit_bootsplash();
}