1 files changed, 140 insertions, 0 deletions
diff --git a/src/build_email.php b/src/build_email.php
new file mode 100644
index 0000000..5301106
--- /dev/null
+++ b/src/build_email.php
@@ -0,0 +1,140 @@
+<?php
+
+require_once(__DIR__ . '/Util.php');
+
+function build_text($text, $edit) {
+  if ($edit) {
+    $edit_notice = <<<EOF
+[This message has been edited.]
+
+
+EOF;
+
+    $text = $edit_notice . $text;
+  }
+
+  return $text;
+}
+
+function build_footer($postId, $forumURL) {
+  $postURL = "$forumURL/viewtopic.php?p=$postId#p$postId";
+  $footer = <<<EOF
+
+_______________________________________________
+Read this topic online here:
+$postURL
+EOF;
+
+  return $footer;
+}
+
+function build_body(array &$headers, $text, $attachments, $footer) {
+  $body = null;
+
+  # Handle attachements, if any
+  if (empty($attachments)) {
+    # No attachments, send a plain email
+    $body = $text . "\n" . $footer;
+    $headers['Content-Type'] = 'text/plain; charset=UTF-8; format=flowed';
+    $headers['Content-Transfer-Encoding'] = '8bit';
+  }
+  else {
+    # Attachments, build a MIME email
+    require_once('Mail/mimePart.php');
+
+    $headers['MIME-Version'] = '1.0';
+
+    $params = array('content_type' => 'multipart/mixed');
+    $mime = new Mail_mimePart('', $params);
+
+    # Build the main body
+    build_text_part($mime, $text);
+
+    # Build each attachment
+    foreach ($attachments as $a) {
+      $bytes = file_get_contents($a['path']);
+      if ($bytes === false) {
+        throw new Exception('failed to read file: ' . $a['path']);
+      }
+
+      build_attachment(
+        $mime,
+        $adata['mimetype'],
+        $adata['real_filename'],
+        $adata['attach_comment'],
+        $bytes
+      );
+    }
+
+    # Build footer
+    build_text_part($mime, $footer);
+
+    # Encode the message
+    $msg = $mime->encode();
+    $headers = array_merge($headers, $msg['headers']);
+    $body = $msg['body'];
+  }
+
+  return $body;
+}
+
+function build_headers($userName, $userEmail, $to, $sender, $subject, $edit,
+                       $time, $messageId, $forumURL, $inReplyTo, $references) {
+
+  $from = sprintf('%s <%s>', utf8_quote_non_ascii($userName), $userEmail);
+  $subject = utf8_quote_non_ascii($subject);
+  $date = date(DATE_RFC2822, $time);
+
+  if ($edit) {
+    $edit_header = 'Edit: ';
+    $subject = $edit_header . $subject;
+  }
+
+  $headers = array(
+    'To'          => $to,
+    'From'        => $from,
+    'Sender'      => $sender,
+    'Subject'     => $subject,
+    'Date'        => $date,
+    'Message-ID'  => $messageId,
+    'X-BeenThere' => $forumURL
+  );
+
+  if ($inReplyTo !== null) {
+    $headers['In-Reply-To'] = $inReplyTo;
+  }
+  
+  if ($references !== null) {
+    $headers['References'] = $references;
+  }
+
+  return $headers;
+}
+
+function build_text_part(Mail_mimePart $mime, $text) {
+  $params = array(
+    'content_type' => 'text/plain',
+    'charset'      => 'utf-8',
+    'encoding'     => '8bit',
+    'disposition'  => 'inline'
+  );
+  $mime->addSubPart($text, $params);
+}
+
+function build_attachment(Mail_mimePart $mime, $type,
+                          $filename, $descr, $data) {
+  $params = array( 
+    'content_type' => $type,
+    'encoding'     => 'base64',
+    'disposition'  => 'attachment',
+    'dfilename'    => $filename,
+    'description'  => $descr
+  );
+  $mime->addSubPart($data, $params);
+}
+
+function build_message_id($postId, $editId, $time, $forumHost) {
+  return "<$time.$postId.$editId.bridge@$forumHost>";
+}
+
+?>