ucp_pm_compose.php

这些都是我以前学习是用到的源码

<?php
/**
*
* @package ucp
* @version $Id: ucp_pm_compose.php,v 1.62 2006/11/27 12:56:17 acydburn Exp $
* @copyright (c) 2005 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/

/**
* Compose private message
* Called from ucp_pm with mode == 'compose'
*/
function compose_pm($id, $mode, $action)
{
	global $template, $db, $auth, $user;
	global $phpbb_root_path, $phpEx, $config;

	include($phpbb_root_path . 'includes/functions_posting.' . $phpEx);
	include($phpbb_root_path . 'includes/functions_display.' . $phpEx);
	include($phpbb_root_path . 'includes/message_parser.' . $phpEx);

	if (!$action)
	{
		$action = 'post';
	}

	// Grab only parameters needed here
	$to_user_id		= request_var('u', 0);
	$to_group_id	= request_var('g', 0);
	$msg_id			= request_var('p', 0);
	$draft_id		= request_var('d', 0);
	$lastclick		= request_var('lastclick', 0);

	// Do NOT use request_var or specialchars here
	$address_list	= isset($_REQUEST['address_list']) ? $_REQUEST['address_list'] : array();

	$submit		= (isset($_POST['post'])) ? true : false;
	$preview	= (isset($_POST['preview'])) ? true : false;
	$save		= (isset($_POST['save'])) ? true : false;
	$load		= (isset($_POST['load'])) ? true : false;
	$cancel		= (isset($_POST['cancel']) && !isset($_POST['save'])) ? true : false;
	$delete		= (isset($_POST['delete'])) ? true : false;

	$remove_u	= (isset($_REQUEST['remove_u'])) ? true : false;
	$remove_g	= (isset($_REQUEST['remove_g'])) ? true : false;
	$add_to		= (isset($_REQUEST['add_to'])) ? true : false;
	$add_bcc	= (isset($_REQUEST['add_bcc'])) ? true : false;

	$refresh	= isset($_POST['add_file']) || isset($_POST['delete_file']) || isset($_POST['edit_comment']) || $save || $load
		|| $remove_u || $remove_g || $add_to || $add_bcc;

	$action		= ($delete && !$preview && !$refresh && $submit) ? 'delete' : $action;

	$error = array();
	$current_time = time();

	// Was cancel pressed? If so then redirect to the appropriate page
	if ($cancel || ($current_time - $lastclick < 2 && $submit))
	{
		if ($msg_id)
		{
			redirect(append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=pm&amp;mode=view&amp;action=view_message&amp;p=' . $msg_id));
		}
		redirect(append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=pm'));
	}

	// Output PM_TO box if message composing
	if ($action != 'edit')
	{
		if ($config['allow_mass_pm'] && $auth->acl_get('u_masspm'))
		{
			$sql = 'SELECT group_id, group_name, group_type
				FROM ' . GROUPS_TABLE . '
				WHERE group_type NOT IN (' . GROUP_HIDDEN . ', ' . GROUP_CLOSED . ')
					AND group_receive_pm = 1
				ORDER BY group_type DESC';
			$result = $db->sql_query($sql);

			$group_options = '';
			while ($row = $db->sql_fetchrow($result))
			{
				$group_options .= '<option' . (($row['group_type'] == GROUP_SPECIAL) ? ' class="blue"' : '') . ' value="' . $row['group_id'] . '">' . (($row['group_type'] == GROUP_SPECIAL) ? $user->lang['G_' . $row['group_name']] : $row['group_name']) . '</option>';
			}
			$db->sql_freeresult($result);
		}

		$template->assign_vars(array(
			'S_SHOW_PM_BOX'		=> true,
			'S_ALLOW_MASS_PM'	=> ($config['allow_mass_pm'] && $auth->acl_get('u_masspm')) ? true : false,
			'S_GROUP_OPTIONS'	=> ($config['allow_mass_pm'] && $auth->acl_get('u_masspm')) ? $group_options : '',
			'U_SEARCH_USER'		=> append_sid("{$phpbb_root_path}memberlist.$phpEx", 'mode=searchuser&amp;form=post&amp;field=username_list'))
		);
	}

	$sql = '';

	// What is all this following SQL for? Well, we need to know
	// some basic information in all cases before we do anything.
	switch ($action)
	{
		case 'post':
			if (!$auth->acl_get('u_sendpm'))
			{
				trigger_error('NO_AUTH_SEND_MESSAGE');
			}
		break;

		case 'reply':
		case 'quote':
		case 'forward':
		case 'quotepost':
			if (!$msg_id)
			{
				trigger_error('NO_MESSAGE');
			}

			if (!$auth->acl_get('u_sendpm'))
			{
				trigger_error('NO_AUTH_SEND_MESSAGE');
			}

			if ($action == 'quotepost')
			{
				$sql = 'SELECT p.post_id as msg_id, p.post_text as message_text, p.poster_id as author_id, p.post_time as message_time, p.bbcode_bitfield, p.bbcode_uid, p.enable_sig, p.enable_smilies, p.enable_magic_url, t.topic_title as message_subject, u.username as quote_username
					FROM ' . POSTS_TABLE . ' p, ' . TOPICS_TABLE . ' t, ' . USERS_TABLE . " u
					WHERE p.post_id = $msg_id
						AND t.topic_id = p.topic_id
						AND u.user_id = p.poster_id";
			}
			else
			{
				$sql = 'SELECT t.folder_id, p.*, u.username as quote_username
					FROM ' . PRIVMSGS_TO_TABLE . ' t, ' . PRIVMSGS_TABLE . ' p, ' . USERS_TABLE . ' u
					WHERE t.user_id = ' . $user->data['user_id'] . "
						AND p.author_id = u.user_id
						AND t.msg_id = p.msg_id
						AND p.msg_id = $msg_id";
			}
		break;

		case 'edit':
			if (!$msg_id)
			{
				trigger_error('NO_MESSAGE');
			}

			// check for outbox (not read) status, we do not allow editing if one user already having the message
			$sql = 'SELECT p.*, t.folder_id
				FROM ' . PRIVMSGS_TO_TABLE . ' t, ' . PRIVMSGS_TABLE . ' p
				WHERE t.user_id = ' . $user->data['user_id'] . '
					AND t.folder_id = ' . PRIVMSGS_OUTBOX . "
					AND t.msg_id = $msg_id
					AND t.msg_id = p.msg_id";
		break;

		case 'delete':
			if (!$auth->acl_get('u_pm_delete'))
			{
				trigger_error('NO_AUTH_DELETE_MESSAGE');
			}

			if (!$msg_id)
			{
				trigger_error('NO_MESSAGE');
			}

			$sql = 'SELECT msg_id, pm_unread, pm_new, author_id, folder_id
				FROM ' . PRIVMSGS_TO_TABLE . '
				WHERE user_id = ' . $user->data['user_id'] . "
					AND msg_id = $msg_id";
		break;

		case 'smilies':
			generate_smilies('window', 0);
		break;

		default:
			trigger_error('NO_ACTION_MODE', E_USER_ERROR);
	}

	if ($action == 'forward' && (!$config['forward_pm'] || !$auth->acl_get('u_pm_forward')))
	{
		trigger_error('NO_AUTH_FORWARD_MESSAGE');
	}

	if ($action == 'edit' && !$auth->acl_get('u_pm_edit'))
	{
		trigger_error('NO_AUTH_EDIT_MESSAGE');
	}

	if ($sql)
	{
		$result = $db->sql_query_limit($sql, 1);
		$post = $db->sql_fetchrow($result);
		$db->sql_freeresult($result);

		if (!$post)
		{
			trigger_error('NO_MESSAGE');
		}

		$msg_id			= (int) $post['msg_id'];
		$folder_id		= (isset($post['folder_id'])) ? $post['folder_id'] : 0;
		$message_text	= (isset($post['message_text'])) ? $post['message_text'] : '';

		if ((!$post['author_id'] || ($post['author_id'] == ANONYMOUS && $action != 'delete')) && $msg_id)
		{
			trigger_error('NO_AUTHOR');
		}

		if ($action == 'quotepost')
		{
			// Decode text for message display
			decode_message($message_text, $post['bbcode_uid']);
		}

		if ($action != 'delete')
		{
			$enable_urls = $post['enable_magic_url'];
			$enable_sig = (isset($post['enable_sig'])) ? $post['enable_sig'] : 0;

			$message_attachment = (isset($post['message_attachement'])) ? $post['message_attachement'] : 0;
			$message_subject = $post['message_subject'];
			$message_time = $post['message_time'];
			$bbcode_uid = $post['bbcode_uid'];

			$quote_username = (isset($post['quote_username'])) ? $post['quote_username'] : '';
			$icon_id = (isset($post['icon_id'])) ? $post['icon_id'] : 0;

			if (($action == 'reply' || $action == 'quote' || $action == 'quotepost') && !sizeof($address_list) && !$refresh && !$submit && !$preview)
			{
				$address_list = array('u' => array($post['author_id'] => 'to'));
			}
			else if ($action == 'edit' && !sizeof($address_list) && !$refresh && !$submit && !$preview)
			{
				// Rebuild TO and BCC Header
				$address_list = rebuild_header(array('to' => $post['to_address'], 'bcc' => $post['bcc_address']));
			}

			if ($action == 'quotepost')
			{
				$check_value = 0;
			}
			else
			{
				$check_value = (($post['enable_bbcode']+1) << 8) + (($post['enable_smilies']+1) << 4) + (($enable_urls+1) << 2) + (($post['enable_sig']+1) << 1);
			}
		}
	}
	else
	{
		$message_attachment = 0;
		$message_text = $message_subject = '';

		if ($to_user_id && $action == 'post')
		{
			$address_list['u'][$to_user_id] = 'to';
		}
		else if ($to_group_id && $action == 'post')
		{
			$address_list['g'][$to_group_id] = 'to';
		}
		$check_value = 0;
	}

	if (($to_group_id || isset($address_list['g'])) && (!$config['allow_mass_pm'] || !$auth->acl_get('u_masspm')))
	{
		trigger_error('NO_AUTH_GROUP_MESSAGE');
	}

	if ($action == 'edit' && !$refresh && !$preview && !$submit)
	{
		if (!($message_time > time() - ($config['pm_edit_time'] * 60) || !$config['pm_edit_time']))
		{
			trigger_error('CANNOT_EDIT_MESSAGE_TIME');
		}
	}

	if (!isset($icon_id))
	{
		$icon_id = 0;
	}

	$message_parser = new parse_message();

	$message_parser->message = ($action == 'reply') ? '' : $message_text;
	unset($message_text);

	$s_action = append_sid("{$phpbb_root_path}ucp.$phpEx", "i=$id&amp;mode=$mode&amp;action=$action", true, $user->session_id);
	$s_action .= ($msg_id) ? "&amp;p=$msg_id" : '';

	// Delete triggered ?
	if ($action == 'delete')
	{
		// Folder id has been determined by the SQL Statement
		// $folder_id = request_var('f', PRIVMSGS_NO_BOX);

		// Do we need to confirm ?
		if (confirm_box(true))
		{
			delete_pm($user->data['user_id'], $msg_id, $folder_id);

			// jump to next message in "history"? nope, not for the moment. But able to be included later.
			$meta_info = append_sid("{$phpbb_root_path}ucp.$phpEx", "i=pm&amp;folder=$folder_id");
			$message = $user->lang['MESSAGE_DELETED'];

			meta_refresh(3, $meta_info);
			$message .= '<br /><br />' . sprintf($user->lang['RETURN_FOLDER'], '<a href="' . $meta_info . '">', '</a>');
			trigger_error($message);
		}
		else
		{
			$s_hidden_fields = array(
				'p'			=> $msg_id,
				'f'			=> $folder_id,
				'action'	=> 'delete'
			);

			// "{$phpbb_root_path}ucp.$phpEx?i=pm&amp;mode=compose"
			confirm_box(false, 'DELETE_MESSAGE', build_hidden_fields($s_hidden_fields));
		}
	}

	// Handle User/Group adding/removing
	handle_message_list_actions($address_list, $remove_u, $remove_g, $add_to, $add_bcc);

	// Check for too many recipients
	if ((!$config['allow_mass_pm'] || !$auth->acl_get('u_masspm')) && num_recipients($address_list) > 1)
	{
		$address_list = get_recipient_pos($address_list, 1);
		$error[] = $user->lang['TOO_MANY_RECIPIENTS'];
	}

	// Always check if the submitted attachment data is valid and belongs to the user.
	// Further down (especially in submit_post()) we do not check this again.
	$message_parser->get_submitted_attachment_data();

	if ($message_attachment && !$submit && !$refresh && !$preview && $action == 'edit')