#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
-#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
-#include <signal.h>
+
#include "setuid.h"
+#include "netutil.h"
-FILE *fd = NULL;
FILE *hosts = NULL;
FILE *gw = NULL;
struct keyvalue *kv = NULL;
{
if (kv)
freekeyvalues(kv);
- if (fd)
- fclose(fd);
if (hosts)
fclose(hosts);
if (gw)
int main(int argc, char *argv[])
{
- int fdpid;
char hostname[STRING_SIZE] = "";
char domainname[STRING_SIZE] = "";
char gateway[STRING_SIZE] = "";
- char buffer[STRING_SIZE];
char address[STRING_SIZE] = "";
- char *active, *ip, *host, *domain;
- int pid;
if (!(initsetuid()))
exit(1);
atexit(exithandler);
- memset(buffer, 0, STRING_SIZE);
-
kv = initkeyvalues();
if (!(readkeyvalues(kv, CONFIG_ROOT "/ethernet/settings")))
{
freekeyvalues(kv);
kv = NULL;
- if (!(gw = fopen(CONFIG_ROOT "/red/remote-ipaddress", "r")))
- {
+ if ((gw = fopen(CONFIG_ROOT "/red/remote-ipaddress", "r"))) {
+ if (fgets(gateway, STRING_SIZE, gw) == NULL) {
+ fprintf(stderr, "Couldn't read remote-ipaddress\n");
+ exit(1);
+ }
+ } else {
fprintf(stderr, "Couldn't open remote-ipaddress file\n");
- fclose(gw);
- gw = NULL;
- exit(1);
- }
-
- if (fgets(gateway, STRING_SIZE, gw) == NULL)
- {
- fprintf(stderr, "Couldn't read remote-ipaddress\n");
- exit(1);
- }
-
- if (!(fd = fopen(CONFIG_ROOT "/main/hosts", "r")))
- {
- fprintf(stderr, "Couldn't open main hosts file\n");
- exit(1);
}
if (!(hosts = fopen("/etc/hosts", "w")))
{
fprintf(stderr, "Couldn't open /etc/hosts file\n");
- fclose(fd);
- fd = NULL;
exit(1);
}
fprintf(hosts, "127.0.0.1\tlocalhost\n");
else
fprintf(hosts, "%s\t%s\n",address,hostname);
- fprintf(hosts, "%s\tgateway\n",gateway);
-
- while (fgets(buffer, STRING_SIZE, fd))
- {
- buffer[strlen(buffer) - 1] = 0;
- if (buffer[0]==',') continue; /* disabled if empty field */
- active = strtok(buffer, ",");
- if (strcmp(active, "off")==0) continue; /* or 'off' */
-
- ip = strtok(NULL, ",");
- host = strtok(NULL, ",");
- domain = strtok(NULL, ",");
-
- if (!(ip && host))
- continue; // bad line ? skip
-
- if (!VALID_IP(ip))
- {
- fprintf(stderr, "Bad IP: %s\n", ip);
- continue; /* bad ip, skip */
- }
-
- if (strspn(host, LETTERS_NUMBERS "-") != strlen(host))
- {
- fprintf(stderr, "Bad Host: %s\n", host);
- continue; /* bad name, skip */
- }
-
- if (domain)
- fprintf(hosts, "%s\t%s.%s\t%s\n",ip,host,domain,host);
- else
- fprintf(hosts, "%s\t%s\n",ip,host);
- }
- fclose(fd);
- fd = NULL;
- fclose(hosts);
- hosts = NULL;
-
- if ((fdpid = open("/var/run/dnsmasq.pid", O_RDONLY)) == -1)
- {
- fprintf(stderr, "Couldn't open pid file\n");
- exit(1);
- }
- if (read(fdpid, buffer, STRING_SIZE - 1) == -1)
- {
- fprintf(stderr, "Couldn't read from pid file\n");
- close(fdpid);
- exit(1);
- }
- close(fdpid);
- pid = atoi(buffer);
- if (pid <= 1)
- {
- fprintf(stderr, "Bad pid value\n");
- exit(1);
- }
- if (kill(pid, SIGHUP) == -1)
- {
- fprintf(stderr, "Unable to send SIGHUP\n");
- exit(1);
- }
+ if (strlen(gateway) > 0)
+ fprintf(hosts, "%s\tgateway\n", gateway);
return 0;
}