busybox

/*

 * files.c -- DHCP server file manipulation *

 * Rewrite by Russ Dill <Russ.Dill@asu.edu> July 2001

 */

​

#include <sys/socket.h>

#include <arpa/inet.h>

#include <string.h>

#include <stdlib.h>

#include <time.h>

#include <ctype.h>

#include <netdb.h>

​

#include "dhcpd.h"

#include "files.h"

#include "options.h"

#include "common.h"

​

/*

 * Domain names may have 254 chars, and string options can be 254

 * chars long. However, 80 bytes will be enough for most, and won't

 * hog up memory. If you have a special application, change it

 */

#define READ_CONFIG_BUF_SIZE 80

​

/* on these functions, make sure you datatype matches */

static int read_ip(const char *line, void *arg)

{

    struct in_addr *addr = arg;

    struct hostent *host;

    int retval = 1;

​

    if (!inet_aton(line, addr)) {

        if ((host = gethostbyname(line)))

            addr->s_addr = *((unsigned long *) host->h_addr_list[0]);

        else retval = 0;

    }

    return retval;

}

​

​

static int read_str(const char *line, void *arg)

{

    char **dest = arg;

​

    if (*dest) free(*dest);

    *dest = strdup(line);

​

    return 1;

}

​

​

static int read_u32(const char *line, void *arg)

{

    uint32_t *dest = arg;

    char *endptr;

    *dest = strtoul(line, &endptr, 0);

    return endptr[0] == '\0';

}

​

​

static int read_yn(const char *line, void *arg)

{