src/install+setup/setup/misc.c

   1 /* SmoothWall setup program.
   2  *
   3  * This program is distributed under the terms of the GNU General Public
   4  * Licence.  See the file COPYING for details.
   5  *
   6  * (c) Lawrence Manning, 2001
   7  * Misc. stuff for the lib.
   8  *
   9  * $Id: misc.c,v 1.5.2.3 2005/08/25 17:51:42 gespinasse Exp $
  10  *
  11  */
  12
  13 #include "setup.h"
  14
  15 extern FILE *flog;
  16 extern char *mylog;
  17
  18 extern char **ctr;
  19
  20 extern int automode;
  21
  22 /* This will rewrite /etc/hosts, /etc/hosts.*, and the apache ServerName file. */
  23 int writehostsfiles(void)
  24 {
  25         char address[STRING_SIZE] = "";
  26         char netaddress[STRING_SIZE] = "";
  27         char netmask[STRING_SIZE] = "";
  28         char message[1000];
  29         FILE *file, *hosts;
  30         struct keyvalue *kv;
  31         char hostname[STRING_SIZE];
  32         char domainname[STRING_SIZE] = "";
  33         char commandstring[STRING_SIZE];
  34         char buffer[STRING_SIZE];
  35
  36         kv = initkeyvalues();
  37         if (!(readkeyvalues(kv, CONFIG_ROOT "/ethernet/settings")))
  38         {
  39                 freekeyvalues(kv);
  40                 errorbox(ctr[TR_UNABLE_TO_OPEN_SETTINGS_FILE]);
  41                 return 0;
  42         }
  43         findkey(kv, "GREEN_ADDRESS", address);
  44         findkey(kv, "GREEN_NETADDRESS", netaddress);
  45         findkey(kv, "GREEN_NETMASK", netmask);
  46         freekeyvalues(kv);
  47
  48         kv = initkeyvalues();
  49         if (!(readkeyvalues(kv, CONFIG_ROOT "/main/settings")))
  50         {
  51                 freekeyvalues(kv);
  52                 errorbox(ctr[TR_UNABLE_TO_OPEN_SETTINGS_FILE]);
  53                 return 0;
  54         }
  55         strcpy(hostname, SNAME );
  56         findkey(kv, "HOSTNAME", hostname);
  57         findkey(kv, "DOMAINNAME", domainname);
  58         freekeyvalues(kv);
  59
  60         if (!(file = fopen(CONFIG_ROOT "/main/hostname.conf", "w")))
  61         {
  62                 sprintf (message, ctr[TR_UNABLE_TO_WRITE_VAR_SMOOTHWALL_MAIN_HOSTNAMECONF], CONFIG_ROOT);
  63                 errorbox(message);
  64                 return 0;
  65         }
  66         fprintf(file, "ServerName %s.%s\n", hostname,domainname);
  67         fclose(file);
  68
  69         if (!(file = fopen(CONFIG_ROOT "/main/hosts", "r")))
  70         {
  71                 errorbox(ctr[TR_UNABLE_TO_OPEN_HOSTS_FILE]);
  72                 return 0;
  73         }
  74         if (!(hosts = fopen("/etc/hosts", "w")))
  75         {
  76                 errorbox(ctr[TR_UNABLE_TO_WRITE_ETC_HOSTS]);
  77                 return 0;
  78         }
  79         fprintf(hosts, "127.0.0.1\tlocalhost\n");
  80         if (strlen(domainname))
  81                 fprintf(hosts, "%s\t%s.%s\t%s\n",address,hostname,domainname,hostname);
  82         else
  83                 fprintf(hosts, "%s\t%s\n",address,hostname);
  84         while (fgets(buffer, STRING_SIZE, file))
  85         {
  86                 char *token, *ip, *host, *domain;
  87
  88                 buffer[strlen(buffer) - 1] = 0;
  89
  90                 token = strtok(buffer, ",");
  91
  92                 ip = strtok(NULL, ",");
  93                 host = strtok(NULL, ",");
  94                 domain = strtok(NULL, ",");
  95
  96                 if (!(ip && host))
  97                         break;
  98
  99                 if (strlen(ip) < 7 || strlen(ip) > 15
 100                  || strspn(ip, "0123456789.") != strlen(ip))
 101                         break;
 102
 103                 if (strspn(host, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-") != strlen(host))
 104                         break;
 105
 106                 if (domain)
 107                         fprintf(hosts, "%s\t%s.%s\t%s\n",ip,host,domain,host);
 108                 else
 109                         fprintf(hosts, "%s\t%s\n",ip,host);
 110         }
 111         fclose(file);
 112         fclose(hosts);
 113
 114         /* TCP wrappers stuff. */
 115         if (!(file = fopen("/etc/hosts.deny", "w")))
 116         {
 117                 errorbox(ctr[TR_UNABLE_TO_WRITE_ETC_HOSTS_DENY]);
 118                 return 0;
 119         }
 120         fprintf(file, "ALL : ALL\n");
 121         fclose(file);
 122
 123         if (!(file = fopen("/etc/hosts.allow", "w")))
 124         {
 125                 errorbox(ctr[TR_UNABLE_TO_WRITE_ETC_HOSTS_ALLOW]);
 126                 return 0;
 127         }
 128         fprintf(file, "sshd : ALL\n");
 129         fprintf(file, "ALL  : localhost\n");
 130         fprintf(file, "ALL  : %s/%s\n", netaddress, netmask);
 131         fclose(file);
 132
 133         sprintf(commandstring, "/bin/hostname %s.%s", hostname, domainname);
 134         if (mysystem(commandstring))
 135         {
 136                 errorbox(ctr[TR_UNABLE_TO_SET_HOSTNAME]);
 137                 return 0;
 138         }
 139
 140         return 1;
 141 }