/*

    Copyright (C) 2009  RedHat inc.

    This program 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 program 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 program; if not, write to the Free Software Foundation, Inc.,

    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

*/

#include "libabrt.h"

int daemon_is_ok()

{

    int fd = open(VAR_RUN"/abrt/abrtd.pid", O_RDONLY);

    if (fd < 0)

    {

        return 0;

    }

    char pid[sizeof(pid_t)*3 + 2];

    int len = read(fd, pid, sizeof(pid)-1);

    close(fd);

    if (len <= 0)

        return 0;

    pid[len] = '\0';

    *strchrnul(pid, '\n') = '\0';

    /* paranoia: only allow non-empty numeric strings */

    unsigned i = 0;

    do

    {

        if (pid[i] < '0' || pid[i] > '9')

            return 0;

        i++;

    } while (pid[i] != '\0');

    char path[sizeof("/proc/%s/stat") + sizeof(pid)];

    sprintf(path, "/proc/%s/stat", pid);

    struct stat sb;

    if (stat(path, &sb) == -1)

    {

        return 0;

    }

    /* TODO: maybe readlink /proc/PID/exe and check that it is "xxx/abrt"? */

    return 1;

}