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/*
* Copyright (c) 2013 RIPE NCC <atlas@ripe.net>
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#define LINEL (INET6_ADDRSTRLEN * 2)
#include "libbb.h"
#include "resolv.h"
static void nameserver_ip_add (char *nsentry, char *ip_as_string)
{
strncpy (nsentry, ip_as_string, LINEL);
// printf("AA added nameserver %s\n", ip_as_string);
// printf("AA added nameserver to ns %s\n", nsentry);
return;
}
static int resolv_conf_parse_line (char *nsentry, char *line)
{
#define NEXT_TOKEN strtok_r(NULL, delims, &strtok_state)
char *strtok_state;
static const char *const delims = " \t";
char *const first_token = strtok_r(line, delims, &strtok_state);
if (!first_token) return 0;
if (!strcmp(first_token, "nameserver")) {
char *const nameserver = NEXT_TOKEN;
if (nameserver) {
if(nameserver[(strlen(nameserver) - 1)] == '\n')
nameserver[(strlen(nameserver) - 1)] = NULL;
nameserver_ip_add(nsentry, nameserver);
//printf("AA added nameserver %s\n", nsentry);
return 1;
}
}
return 0;
}
int get_local_resolvers(char nslist[MAXNS][INET6_ADDRSTRLEN * 2])
{
char buf[LINEL];
int i = 0;
FILE *R = fopen ("/etc/resolv.conf", "r");
if (R != NULL) {
while ( (fgets (buf, LINEL, R)) && (i < MAXNS)) {
if(resolv_conf_parse_line(nslist[i], buf) )
i++;
}
fclose (R);
}
return i;
}
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