很久没有写过博客了,现在我要重新开始记录,工作中遇到的一些问题,并将其记录下来最为经验的积累.
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很多网站,只要有用户注册,就必然会遇到用户登陆时忘记密码的情况,常用的找回密码的方式有两种,一种是通过发送短信验证码,另一种是通过发送连接到邮箱,打开连接通过验证后跳转到重置密码界面.
短信认证的方法,之前写过一篇jsp版本的.通过短信找回密码. 思路十分简单,通过随机生成6位字符验证码,然后将其写入数据库,通过调用第三方短信接口将验证码发送到用户.用户验证成功后即可重置密码.
邮箱找回密码方式也十分简单:
邮箱验证格式:http://ip/find_pass.php?t=md5(username)+md5(password)+6位随机字符
发送邮件接口smtp.class.php如下:
<?phpclass Smtp{ /* Public Variables */ var $smtp_port; var $time_out; var $host_name; var $log_file; var $relay_host; var $debug; var $auth; var $user; var $pass; /* Private Variables */ var $sock; /* Constractor */ function smtp($relay_host = "", $smtp_port = 25, $auth = false, $user, $pass) { $this->debug = false; $this->smtp_port = $smtp_port; $this->relay_host = $relay_host; $this->time_out = 30; //is used in fsockopen() $this->auth = $auth; //auth $this->user = $user; $this->pass = $pass; $this->host_name = "localhost"; //is used in HELO command $this->log_file = ""; $this->sock = false; } /* Main Function */ function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "") { $mail_from = $this->get_address($this->strip_comment($from)); $body = ereg_replace("(^|(\r\n))(\.)", "\1.\3", $body); $header .= "MIME-Version:1.0\r\n"; if ($mailtype == "HTML") { $header .= "Content-Type:text/html\r\n"; } $header .= "To: " . $to . "\r\n"; if ($cc != "") { $header .= "Cc: " . $cc . "\r\n"; } $header .= "From: $from\r\n"; $header .= "Subject: " . $subject . "\r\n"; $header .= $additional_headers; $header .= "Date: " . date("r") . "\r\n"; $header .= "X-Mailer:By Redhat (PHP/" . phpversion() . ")\r\n"; list ($msec, $sec) = explode(" ", microtime()); $header .= "Message-ID: \r\n"; $TO = explode(",", $this->strip_comment($to)); if ($cc != "") { $TO = array_merge($TO, explode(",", $this->strip_comment($cc))); } if ($bcc != "") { $TO = array_merge($TO, explode(",", $this->strip_comment($bcc))); } $sent = true; foreach ($TO as $rcpt_to) { $rcpt_to = $this->get_address($rcpt_to); if (!$this->smtp_sockopen($rcpt_to)) { $this->log_write("Error: Cannot send email to " . $rcpt_to . "\n"); $sent = false; continue; } if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) { $this->log_write("E-mail has been sent to \n"); } else { $this->log_write("Error: Cannot send email to \n"); $sent = false; } fclose($this->sock); $this->log_write("Disconnected from remote host\n"); } return $sent; } /* Private Functions */ function smtp_send($helo, $from, $to, $header, $body = "") { if (!$this->smtp_putcmd("HELO", $helo)) { return $this->smtp_error("sending HELO command"); } // auth if ($this->auth) { if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) { return $this->smtp_error("sending HELO command"); } if (!$this->smtp_putcmd("", base64_encode($this->pass))) { return $this->smtp_error("sending HELO command"); } } if (!$this->smtp_putcmd("MAIL", "FROM:")) { return $this->smtp_error("sending MAIL FROM command"); } if (!$this->smtp_putcmd("RCPT", "TO:")) { return $this->smtp_error("sending RCPT TO command"); } if (!$this->smtp_putcmd("DATA")) { return $this->smtp_error("sending DATA command"); } if (!$this->smtp_message($header, $body)) { return $this->smtp_error("sending message"); } if (!$this->smtp_eom()) { return $this->smtp_error("sending . [EOM]"); } if (!$this->smtp_putcmd("QUIT")) { return $this->smtp_error("sending QUIT command"); } return true; } function smtp_sockopen($address) { if ($this->relay_host == "") { return $this->smtp_sockopen_mx($address); } else { return $this->smtp_sockopen_relay(); } } function smtp_sockopen_relay() { $this->log_write("Trying to " . $this->relay_host . ":" . $this->smtp_port . "\n"); $this->sock = @ fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out); if (!($this->sock && $this->smtp_ok())) { $this->log_write("Error: Cannot connenct to relay host " . $this->relay_host . "\n"); $this->log_write("Error: " . $errstr . " (" . $errno . ")\n"); return false; } $this->log_write("Connected to relay host " . $this->relay_host . "\n"); return true; ; } function smtp_sockopen_mx($address) { $domain = ereg_replace("^.+@([^@]+)$", "\1", $address); if (!@ getmxrr($domain, $MXHOSTS)) { $this->log_write("Error: Cannot resolve MX \"" . $domain . "\"\n"); return false; } foreach ($MXHOSTS as $host) { $this->log_write("Trying to " . $host . ":" . $this->smtp_port . "\n"); $this->sock = @ fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out); if (!($this->sock && $this->smtp_ok())) { $this->log_write("Warning: Cannot connect to mx host " . $host . "\n"); $this->log_write("Error: " . $errstr . " (" . $errno . ")\n"); continue; } $this->log_write("Connected to mx host " . $host . "\n"); return true; } $this->log_write("Error: Cannot connect to any mx hosts (" . implode(", ", $MXHOSTS) . ")\n"); return false; } function smtp_message($header, $body) { fputs($this->sock, $header . "\r\n" . $body); $this->smtp_debug("> " . str_replace("\r\n", "\n" . "> ", $header . "\n> " . $body . "\n> ")); return true; } function smtp_eom() { fputs($this->sock, "\r\n.\r\n"); $this->smtp_debug(". [EOM]\n"); return $this->smtp_ok(); } function smtp_ok() { $response = str_replace("\r\n", "", fgets($this->sock, 512)); $this->smtp_debug($response . "\n"); if (!ereg("^[23]", $response)) { fputs($this->sock, "QUIT\r\n"); fgets($this->sock, 512); $this->log_write("Error: Remote host returned \"" . $response . "\"\n"); return false; } return true; } function smtp_putcmd($cmd, $arg = "") { if ($arg != "") { if ($cmd == "") $cmd = $arg; else $cmd = $cmd . " " . $arg; } fputs($this->sock, $cmd . "\r\n"); $this->smtp_debug("> " . $cmd . "\n"); return $this->smtp_ok(); } function smtp_error($string) { $this->log_write("Error: Error occurred while " . $string . ".\n"); return false; } function log_write($message) { $this->smtp_debug($message); if ($this->log_file == "") { return true; } $message = date("M d H:i:s ") . get_current_user() . "[" . getmypid() . "]: " . $message; if (!@ file_exists($this->log_file) || !($fp = @ fopen($this->log_file, "a"))) { $this->smtp_debug("Warning: Cannot open log file \"" . $this->log_file . "\"\n"); return false; ; } flock($fp, LOCK_EX); fputs($fp, $message); fclose($fp); return true; } function strip_comment($address) { $comment = "\([^()]*\)"; while (ereg($comment, $address)) { $address = ereg_replace($comment, "", $address); } return $address; } function get_address($address) { $address = ereg_replace("([ \t\r\n])+", "", $address); $address = ereg_replace("^.*.*$", "\1", $address); return $address; } function smtp_debug($message) { if ($this->debug) { echo $message . " ;"; } }}?> 将如下地址通过邮箱发送给用户 http://ip/find_pass.php?t=md5(username)+md5(password)+6位随机字符
用户通过查询数据库中是否有token=md5(username)+md5(password)+6位随机字符判断是否可以重置密码,如果成功跳转到重置密码页面.
稍后给出源码下载地址.