SipContact.php

<?php
class SipContact
{
	public $dispname;
	public $scheme = 'sip';
	public $username;
	public $password;
	public $domain; // 可包含 port
	public $parameters = array();
	
	function __construct($username='', $domain=''){
		$this->username = $username;
		$this->domain = $domain;
	}
	
	static function from_str($str){
		$ret = new SipContact();
		$ret->decode($str);
		return $ret;
	}
	
	function equals($dst){
		return ($this->username === $dst->username) && ($this->tag() == $dst->tag());
	}
	
	function address(){
		return "{$this->username}@{$this->domain}";
	}
	
	function set_tag($tag){
		$this->set_parameter('tag', $tag);
	}
	
	function del_tag(){
		$this->del_parameter('tag');
	}
	
	function tag(){
		return $this->get_parameter('tag');
	}
	
	function get_parameter($k){
		return $this->parameters[$k];
	}
	
	function set_parameter($k, $v){
		$this->parameters[$k] = $v;
	}

	function del_parameter($k){
		unset($this->parameters[$k]);
	}
	
	function encode(){
		$ret = '';
		if($this->dispname){
			$ret .= "\"{$this->dispname}\" ";
		}
		$ret .= "<{$this->scheme}:{$this->username}";
		if(strlen($this->password) > 0){
			$ret .= ":{$this->password}";
		}
		$ret .= "@{$this->domain}>";
		foreach($this->parameters as $k=>$v){
			$ret .= ";{$k}";
			if(strlen($v)){
				$ret .= "={$v}";
			}
		}
		return $ret;
	}
	
	function decode($str){
		$pos = strpos($str, '>');
		if($pos === false){
			$address = $str;
			$parameters = '';
		}else{
			$address = substr($str, 0, $pos + 1);
			$parameters = substr($str, $pos + 1);
		}
		
		$this->parse_address($address);
		
		$ps = explode(';', $parameters);
		foreach($ps as $p){
			$p = trim($p);
			if(strlen($p) == 0){
				continue;
			}
			$kv = explode('=', $p);
			$k = $kv[0];
			$v = isset($kv[1])? $kv[1] : '';
			$this->set_parameter($k, $v);
		}
	}

	private function parse_address($str){
		$pos = strpos($str, '<');
		if(count($pos) !== false){
			$this->dispname = trim(substr($str, 0, $pos), '" ');
			$uri = substr($str, $pos);
		}else{
			$uri = $str;
		}
		$uri = trim($uri, '<>');
		
		$a = new SipUri();
		$a->decode($uri);
		$this->scheme = $a->scheme;
		$this->username = $a->username;
		$this->password = $a->password;
		$this->domain = $a->domain;
		return;
		// $ts = explode('@', $uri);
		// if(count($ts) == 2){
		// 	$this->domain = $ts[1]; // TODO: 可能包含 port 和 tag，如 '127.0.0.1:1234;ob'
		// 	$ps = explode(':', $ts[0]);
		// 	if(count($ps) == 2){
		// 		$this->scheme = $ps[0];
		// 		$this->username = $ps[1];
		// 	}else if(count($ts) == 3){
		// 		$this->scheme = $ps[0];
		// 		$this->username = $ps[1];
		// 		$this->password = $ps[2];
		// 	}
		// }
	}
}