Asterisk AGI IP Address lookup
While not exactly a shell script, I figured it would be worthy to post something rather than nothing and technically it is a script none-the-less.
I was experimenting with Asterisk AGI scripts and needed a project. I decided that an IP address lookup would be a good one. Sometimes my dynamic IP changes but my dynamic DNS doesn’t update. With this script, I should be able to dial into my Asterisk machine and get it to tell me the IP address. At least, that’s the plan.
Here is the file:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | #!/usr/bin/php <?php $agivars = array(); while (!feof(STDIN)) { $agivar = trim(fgets(STDIN)); if ($agivar === '') { break; } $agivar = explode(':', $agivar); $agivars[$agivar[0]] = trim($agivar[1]); } extract($agivars);</code> if ((time()-filemtime("/tmp/ipaddress.txt")) > 299) { $ext = file_get_contents("http://www.whatismyip.com/automation/.asp"); file_put_contents("/tmp/ipaddress.txt", $ext); touch("/tmp/ipaddress.txt"); } else { $ext = file_get_contents("/tmp/ipaddress.txt"); } $arrayExt = explode(".", $ext); $again = true; while ($again == true) { $again = false; $i = 0; foreach ($arrayExt AS $row) { if ($i > 0) { execute_agi('STREAM FILE dot ""'); } execute_agi("SAY DIGITS $row \"\""); $i++; } $i=0; execute_agi('STREAM FILE to-hear-msg-again ""'); execute_agi('STREAM FILE press-1 ""'); $again = execute_agi('WAIT FOR DIGIT -1'); if ($again['result'] == 49) { $again = true; } else { $again = false; } } exit; function execute_agi($command) { global $debug_mode, $log_file; fwrite(STDOUT, "$command\n"); fflush(STDOUT); $result = trim(fgets(STDIN)); $ret = array('code'=> -1, 'result'=> -1, 'timeout'=> false, 'data'=> ''); if (preg_match("/^([0-9]{1,3}) (.*)/", $result, $matches)) { $ret['code'] = $matches[1]; $ret['result'] = 0; if (preg_match('/^result=([0-9a-zA-Z]*)\s?(?:\(?(.*?)\)?)?$/', $matches[2], $match)) { $ret['result'] = $match[1]; $ret['timeout'] = ($match[2] === 'timeout') ? true : false; $ret['data'] = $match[2]; } } if ($debug_mode && !empty($logfile)) { $fh = fopen($logfile, 'a'); if ($fh !== false) { $res = $ret['result'] . (empty($ret['data']) ? '' : " / $ret[data]"); fwrite($fh, "-------\n>> $command\n<< $result\n<< parsed $res\n"); fclose($fh); } } return $ret; } ?> |
Coupled with the digits 47 (for IP) in my dialplan as follows:
exten =>> 47,1,AGI(ip-test.agi) |
Here is what it Asterisk AGI IP lookup sounds like. For those who refuse to play mp3’s Asterisk AGI IP lookup in Ogg format.
