DHS.org Auto-Update Script · Mar 13, 22:15 by Shannon Wynter

Ok, so you may or may not be using your DSL connection for hosting a website, or… perhaps you’d just like to be able to log into your boxes from the other side of the world

Anyhow, this perl script will help you keep a DHS.org domain up to date.

1. #!/usr/bin/perl
2. ###############################################
3. # pl Update DHS                               #
4. ###############################################
5. # By Freman                                   #
6. #         http://fremnet.net/contact          #
7. ###############################################
8. # For those of you who are woundering, DHS    #
9. # was a free domain service, but now requires #
10. # donation. This script is was started        #
11. # because the most reliable shell script that #
12. # was availible didn't work as well as I      #
13. # would have hoped.                           #
14. ###############################################
15. # Usage:                                      #
16. #        Fill in the details, and chuck it in #
17. #   your crontab, it's as simple as that      #
18. # Features:                                   #
19. #        Won't try to update unless your IP   #
20. #   has changed (or the cache file is erased) #
21. # More Information:                           #
22. #        Visit: www.dhs.org                   #
23. ###############################################
24. # Oh, and before you email me saying I could  #
25. # use sockets or something similar, I'm going #
26. # to jump in and say NOPE, I'm happy with the #
27. # way I've done it. It's much cleaner then    #
28. # the original SH script.                     #
29. ###############################################
30.   
31. # What interface should I be probing for an IP?
32. $Interface  = "ppp0";
33.   
34. $DHS_UserName = "theuser";
35. $DHS_Password = "thepass";
36. $DHS_Host = "thehost";
37. $DHS_Domain = "dhs.net";
38.   
39. #Example
40. #$DHS_UserName = "methegreat";
41. #$DHS_Password = "mypassword";
42. #$DHS_Host = "box";
43. #$DHS_Domain = "dhs.org";
44.   
45. $Log_Enabled = 1;
46.   
47. #--== You shouldn't need to edit below here ==--#
48.   
49. # File to cache the last known IP in
50. # Note: $DHS_Host gets appended to this.
51. $IP_Cache_File = "/var/run/ip.cache";
52.   
53. $ToolToUse = "/sbin/ifconfig";
54.   
55. $IP_Address = &Get_IP;
56. $Cached_IP = &Get_Cached_IP;
57.   
58. if (not($IP_Address eq $Cached_IP)) {
59. #THE IP ADDRESS HAS CHANGED!!!
60. use LWP::UserAgent;
61. $ua = LWP::UserAgent->new;
62. $ua->agent("plUpdateDHS/0.1");
63.   
64. $req = HTTP::Request->new(GET => "http://members.dhs.org/nic/hosts?hostscmd=edit&hostscmdstage=2&type=4&domain=".$DHS_Domain);
65. $req->authorization_basic($DHS_UserName, $DHS_Password);
66. $ua->request($req)->as_string;
67.   
68. if ($Log_Enabled == 1) {
69.   open(LOG,">>/var/log/updatedhs");
70.   print LOG "[".localtime(time)."] ($DHS_Host.$DHS_Domain) Address Change : $IP_Address\n";
71.   close(LOG);
72. }
73. open(C,">$IP_Cache_File.$DHS_Host") || die "I can't open the IP Cache File: $1";
74. print C "$IP_Address\n";
75. close(C);
76. system('/scripts/checkhost.pl &');
77. }
78.   
79. # Function to whip the current ip from thin air.
80. sub Get_IP {
81. my($IP) = '0.0.0.0';
82. my($Line);
83. open (IFINFO,"$ToolToUse  $Interface |");
84. while (<IFINFO>) {
85.   chomp;
86.   $Line = $_;
87.   if ($Line =~ /(\d*\.\d*\.\d*\.\d*)/) {
88.   $IP = $1;
89.   }
90. }
91. if ($IP eq "0.0.0.0") {
92.   die "I cannoh get the ip address capt`n\n";
93. }
94. close(IFINFO);
95. return($IP);
96. }
97.  
98. # Function to pull the IP stored in the cache.
99. sub Get_Cached_IP {
100. my($IP) = '-.-.-.-';
101. my($Line);
102. if (-e "$IP_Cache_File.$DHS_Host") {
103.   open (CACHE,"<$IP_Cache_File.$DHS_Host");
104.   while (<CACHE>) {
105.   chomp;
106.   $Line = $_;
107.   if ($Line =~ /(\d*\.\d*\.\d*\.\d*)/) {
108.     $IP = $1;
109.   }
110.   }
111.   close(CACHE);
112. }
113. return($IP);
114. }
115. Download this code: dhsupdate.pl (Downloaded 59 time(s))

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