module Win32::Resolv - Documentation for Ruby 4.0
Description: Documentation for the Win32::Resolv module
Keywords: ruby,module,Win32::Resolv

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# module Win32::Resolv

### Public Class Methods

get_hosts_path ()
Source

    # File ext/win32/lib/win32/resolv.rb, line 24
    def self.get_hosts_path
      path = get_hosts_dir
      path = File.expand_path('hosts', path)
      File.exist?(path) ? path : nil
    end

get_resolv_info ()
Source

    # File ext/win32/lib/win32/resolv.rb, line 30
    def self.get_resolv_info
      search, nameserver = get_info
      if search.empty?
        search = nil
      else
        search.delete("")
        search.uniq!
      end
      if nameserver.empty?
        nameserver = nil
      else
        nameserver.delete("")
        nameserver.delete("0.0.0.0")
        nameserver.uniq!
      end
      [ search, nameserver ]
    end

### Private Class Methods

get_dns_server_list ()
Source

    static VALUE
    get_dns_server_list(VALUE self)
    {
        FIXED_INFO *fixedinfo = NULL;
        ULONG buflen = 0;
        DWORD ret;
        VALUE buf, nameservers = Qnil;

        ret = GetNetworkParams(NULL, &buflen);
        if (ret != ERROR_BUFFER_OVERFLOW) w32error_check(ret);
        fixedinfo = ALLOCV(buf, buflen);
        ret = GetNetworkParams(fixedinfo, &buflen);
        if (ret == NO_ERROR) {
            const IP_ADDR_STRING *ipaddr = &fixedinfo->DnsServerList;
            nameservers = rb_ary_new();
            do {
                const char *s = ipaddr->IpAddress.String;
                if (!*s) continue;
                if (strcmp(s, "0.0.0.0") == 0) continue;
                rb_ary_push(nameservers, rb_str_new_cstr(s));
            } while ((ipaddr = ipaddr->Next) != NULL);
        }
        ALLOCV_END(buf);
        w32error_check(ret);

        return nameservers;
    }

get_hosts_dir ()
Source

    # File ext/win32/lib/win32/resolv.rb, line 50
    def get_hosts_dir
      tcpip_params do |params|
        params.value('DataBasePath')
      end
    end

get_info ()
Source

    # File ext/win32/lib/win32/resolv.rb, line 56
    def get_info
      search = nil
      nameserver = get_dns_server_list

      tcpip_params do |params|
        slist = params.value('SearchList')
        search = slist.split(/,\s*/) if slist and !slist.empty?

        if add_search = search.nil?
          search = []
          domain = params.value('Domain')

          if domain and !domain.empty?
            search = [ domain ]
            udmnd = params.value('UseDomainNameDevolution')
            if udmnd&.nonzero?
              if /^\w+\./ =~ domain
                devo = $'
              end
            end
          end
        end

        params.open('Interfaces') do |reg|
          reg.each_key do |iface|
            next unless ns = %w[NameServer DhcpNameServer].find do |key|
              ns = iface.value(key)
              break ns.split(/[,\s]\s*/) if ns and !ns.empty?
            end

            next if (nameserver & ns).empty?

            if add_search
              [ 'Domain', 'DhcpDomain' ].each do |key|
                dom = iface.value(key)
                if dom and !dom.empty?
                  search.concat(dom.split(/,\s*/))
                  break
                end
              end
            end
          end
        end

        search << devo if add_search and devo
      end
      [ search.uniq, nameserver.uniq ]
    end

tcpip_params ()
Source

    static VALUE
    tcpip_params_open(VALUE klass)
    {
        return reg_open_key(reg_key_class, HKEY_LOCAL_MACHINE, TCPIP_Params);
    }