gnu-social/lib/util.php
Evan Prodromou 56021d9572 move avatar scaling and saving to Avatar and Profile
Extracted the code for setting a new original avatar to the Profile
class, and moved some of it to Avatar, too. This makes it easier to
have the same functionality whether an avatar is set using the profile
settings (for our users), or on a remote subscription. Necessitated
changing the filenaming function to just take an ID.

darcs-hash:20080605193708-84dde-a441cc0474951ce7f1a1da9310b5145c0b7c3070.gz
2008-06-05 15:37:08 -04:00

609 lines
17 KiB
PHP

<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* XXX: break up into separate modules (HTTP, HTML, user, files) */
# Show a server error
function common_server_error($msg) {
header('HTTP/1.1 500 Server Error');
header('Content-type: text/plain');
print $msg;
print "\n";
exit();
}
# Show a user error
function common_user_error($msg, $code=200) {
common_show_header('Error');
common_element('div', array('class' => 'error'), $msg);
common_show_footer();
}
$xw = null;
# Start an HTML element
function common_element_start($tag, $attrs=NULL) {
global $xw;
$xw->startElement($tag);
if (is_array($attrs)) {
foreach ($attrs as $name => $value) {
$xw->writeAttribute($name, $value);
}
} else if (is_string($attrs)) {
$xw->writeAttribute('class', $attrs);
}
}
function common_element_end($tag) {
global $xw;
$xw->endElement();
}
function common_element($tag, $attrs=NULL, $content=NULL) {
common_element_start($tag, $attrs);
if ($content) {
global $xw;
$xw->text($content);
}
common_element_end($tag);
}
function common_start_xml($doc=NULL, $public=NULL, $system=NULL) {
global $xw;
$xw = new XMLWriter();
$xw->openURI('php://output');
$xw->setIndent(true);
$xw->startDocument('1.0', 'UTF-8');
if ($doc) {
$xw->writeDTD($doc, $public, $system);
}
}
function common_end_xml() {
global $xw;
$xw->endDocument();
$xw->flush();
}
function common_show_header($pagetitle, $callable=NULL, $data=NULL) {
global $config, $xw;
header('Content-Type: application/xhtml+xml');
common_start_xml('html',
'-//W3C//DTD XHTML 1.0 Strict//EN',
'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
# FIXME: correct language for interface
common_element_start('html', array('xmlns' => 'http://www.w3.org/1999/xhtml',
'xml:lang' => 'en',
'lang' => 'en'));
common_element_start('head');
common_element('title', NULL,
$pagetitle . " - " . $config['site']['name']);
common_element('link', array('rel' => 'stylesheet',
'type' => 'text/css',
'href' => common_path('theme/default/style/html.css'),
'media' => 'screen, projection, tv'));
common_element('link', array('rel' => 'stylesheet',
'type' => 'text/css',
'href' => common_path('theme/default/style/layout.css'),
'media' => 'screen, projection, tv'));
common_element('link', array('rel' => 'stylesheet',
'type' => 'text/css',
'href' => common_path('theme/default/style/print.css'),
'media' => 'print'));
if ($callable) {
if ($data) {
call_user_func($callable, $data);
} else {
call_user_func($callable);
}
}
common_element_end('head');
common_element_start('body');
common_element_start('div', array('id' => 'wrapper'));
common_element_start('div', array('id' => 'content'));
common_element_start('div', array('id' => 'header'));
common_element('h1', 'title', $pagetitle);
common_element('h2', 'subtitle', $config['site']['name']);
common_element_end('div');
common_head_menu();
common_element_start('div', array('id' => 'page'));
}
function common_show_footer() {
global $xw, $config;
common_element_start('div', 'footer');
common_foot_menu();
common_license_block();
common_element_end('div');
common_element_end('div');
common_element_end('div');
common_element_end('div');
common_element_end('body');
common_element_end('html');
common_end_xml();
}
function common_text($txt) {
global $xw;
$xw->text($txt);
}
function common_raw($xml) {
global $xw;
$xw->writeRaw($xml);
}
function common_license_block() {
global $config, $xw;
common_element_start('p', 'license greenBg');
common_element_start('span', 'floatLeft width25');
common_element_start('a', array('class' => 'license',
'rel' => 'license',
href => $config['license']['url']));
common_element('img', array('class' => 'license',
'src' => $config['license']['image'],
'alt' => $config['license']['title']));
common_element_end('a');
common_element_end('span');
common_element_start('span', 'floatRight width75');
common_text(_t('Unless otherwise specified, contents of this site are copyright by the contributors and available under the '));
common_element('a', array('class' => 'license',
'rel' => 'license',
href => $config['license']['url']),
$config['license']['title']);
common_text(_t('. Contributors should be attributed by full name or nickname.'));
common_element_end('span');
common_element_end('p');
}
function common_head_menu() {
$user = common_current_user();
common_element_start('ul', array('id' => 'menu', 'class' => ($user) ? 'five' : 'three'));
common_menu_item(common_local_url('public'), _t('Public'));
if ($user) {
common_menu_item(common_local_url('all', array('nickname' =>
$user->nickname)),
_t('Home'));
common_menu_item(common_local_url('showstream', array('nickname' =>
$user->nickname)),
_t('Profile'), $user->fullname || $user->nickname);
common_menu_item(common_local_url('profilesettings'),
_t('Settings'));
common_menu_item(common_local_url('logout'),
_t('Logout'));
} else {
common_menu_item(common_local_url('login'),
_t('Login'));
common_menu_item(common_local_url('register'),
_t('Register'));
}
common_element_end('ul');
}
function common_foot_menu() {
common_element_start('ul', 'footmenu menuish');
common_menu_item(common_local_url('doc', array('title' => 'about')),
_t('About'));
common_menu_item(common_local_url('doc', array('title' => 'help')),
_t('Help'));
common_menu_item(common_local_url('doc', array('title' => 'privacy')),
_t('Privacy'));
common_menu_item(common_local_url('doc', array('title' => 'source')),
_t('Source'));
common_element_end('ul');
}
function common_menu_item($url, $text, $title=NULL) {
$attrs['href'] = $url;
if ($title) {
$attrs['title'] = $title;
}
common_element_start('li', 'menuitem');
common_element('a', $attrs, $text);
common_element_end('li');
}
function common_input($id, $label, $value=NULL) {
common_element_start('p');
common_element('label', array('for' => $id), $label);
$attrs = array('name' => $id,
'type' => 'text',
'id' => $id);
if ($value) {
$attrs['value'] = htmlspecialchars($value);
}
common_element('input', $attrs);
common_element_end('p');
}
function common_hidden($id, $value) {
common_element('input', array('name' => $id,
'type' => 'hidden',
'id' => $id,
'value' => $value));
}
function common_password($id, $label) {
common_element_start('p');
common_element('label', array('for' => $id), $label);
$attrs = array('name' => $id,
'type' => 'password',
'id' => $id);
common_element('input', $attrs);
common_element_end('p');
}
function common_submit($id, $label) {
global $xw;
common_element_start('p');
common_element_start('label', array('for' => $id));
$xw->writeRaw('&nbsp;');
common_element_end('label');
common_element('input', array('type' => 'submit',
'id' => $id,
'name' => $id,
'value' => $label,
'class' => 'button'));
common_element_end('p');
}
function common_textarea($id, $label, $content=NULL) {
common_element_start('p');
common_element('label', array('for' => $id), $label);
common_element('textarea', array('rows' => 3,
'cols' => 40,
'name' => $id,
'id' => $id,
'class' => 'width50'),
($content) ? $content : ' ');
common_element_end('p');
}
# salted, hashed passwords are stored in the DB
function common_munge_password($id, $password) {
return md5($id . $password);
}
# check if a username exists and has matching password
function common_check_user($nickname, $password) {
$user = User::staticGet('nickname', $nickname);
if (is_null($user)) {
return false;
} else {
return (0 == strcmp(common_munge_password($password, $user->id),
$user->password));
}
}
# is the current user logged in?
function common_logged_in() {
return (!is_null(common_current_user()));
}
function common_have_session() {
return (0 != strcmp(session_id(), ''));
}
function common_ensure_session() {
if (!common_have_session()) {
@session_start();
}
}
function common_set_user($nickname) {
if (is_null($nickname) && common_have_session()) {
unset($_SESSION['userid']);
return true;
} else {
$user = User::staticGet('nickname', $nickname);
if ($user) {
common_ensure_session();
$_SESSION['userid'] = $user->id;
return true;
} else {
return false;
}
}
return false;
}
# who is the current user?
function common_current_user() {
static $user = NULL; # FIXME: global memcached
if (is_null($user)) {
common_ensure_session();
$id = $_SESSION['userid'];
if ($id) {
$user = User::staticGet($id);
}
}
return $user;
}
# get canonical version of nickname for comparison
function common_canonical_nickname($nickname) {
# XXX: UTF-8 canonicalization (like combining chars)
return $nickname;
}
# get canonical version of email for comparison
function common_canonical_email($email) {
# XXX: canonicalize UTF-8
# XXX: lcase the domain part
return $email;
}
define('URL_REGEX', '^|[ \t\r\n])((ftp|http|https|gopher|mailto|news|nntp|telnet|wais|file|prospero|aim|webcal):(([A-Za-z0-9$_.+!*(),;/?:@&~=-])|%[A-Fa-f0-9]{2}){2,}(#([a-zA-Z0-9][a-zA-Z0-9$_.+!*(),;/?:@&~=%-]*))?([A-Za-z0-9$_+!*();/?:~-]))');
function common_render_content($text, $notice) {
$r = htmlspecialchars($text);
$id = $notice->profile_id;
$r = preg_replace('@https?://\S+@', '<a href="\0" class="extlink">\0</a>', $r);
$r = preg_replace('/(^|\b)@([\w-]+)($|\b)/e', "'\\1@'.common_at_link($id, '\\2').'\\3'", $r);
# XXX: # tags
# XXX: machine tags
return $r;
}
function common_at_link($sender_id, $nickname) {
# Try to find profiles this profile is subscribed to that have this nickname
$recipient = new Profile();
# XXX: chokety and bad
$recipient->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.$sender_id.' and subscribed = id)', 'AND');
$recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
if ($recipient->find(TRUE)) {
return '<a href="'.htmlspecialchars($recipient->profileurl).'" class="atlink tolistenee">'.$nickname.'</a>';
}
# Try to find profiles that listen to this profile and that have this nickname
$recipient = new Profile();
# XXX: chokety and bad
$recipient->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.$sender_id.' and subscriber = id)', 'AND');
$recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
if ($recipient->find(TRUE)) {
return '<a href="'.htmlspecialchars($recipient->profileurl).'" class="atlink tolistener">'.$nickname.'</a>';
}
# If this is a local user, try to find a local user with that nickname.
$sender = User::staticGet($sender_id);
if ($sender) {
$recipient_user = User::staticGet('nickname', $nickname);
if ($recipient_user) {
$recipient = $recipient->getProfile();
return '<a href="'.htmlspecialchars($recipient->profileurl).'" class="atlink usertouser">'.$nickname.'</a>';
}
}
# Otherwise, no links. @messages from local users to remote users,
# or from remote users to other remote users, are just
# outside our ability to make intelligent guesses about
return $nickname;
}
// where should the avatar go for this user?
function common_avatar_filename($id, $extension, $size=NULL, $extra=NULL) {
global $config;
if ($size) {
return $id . '-' . $size . (($extra) ? ('-' . $extra) : '') . $extension;
} else {
return $id . '-original' . (($extra) ? ('-' . $extra) : '') . $extension;
}
}
function common_avatar_path($filename) {
global $config;
return INSTALLDIR . '/avatar/' . $filename;
}
function common_avatar_url($filename) {
return common_path('avatar/'.$filename);
}
function common_default_avatar($size) {
static $sizenames = array(AVATAR_PROFILE_SIZE => 'profile',
AVATAR_STREAM_SIZE => 'stream',
AVATAR_MINI_SIZE => 'mini');
global $config;
return common_path($config['avatar']['default'][$sizenames[$size]]);
}
function common_local_url($action, $args=NULL) {
global $config;
if ($config['site']['fancy']) {
return common_fancy_url($action, $args);
} else {
return common_simple_url($action, $args);
}
}
function common_fancy_url($action, $args=NULL) {
switch (strtolower($action)) {
default:
return common_simple_url($action, $args);
}
}
function common_simple_url($action, $args=NULL) {
global $config;
/* XXX: pretty URLs */
$extra = '';
if ($args) {
foreach ($args as $key => $value) {
$extra .= "&${key}=${value}";
}
}
return common_path("index.php?action=${action}${extra}");
}
function common_path($relative) {
global $config;
$pathpart = ($config['site']['path']) ? $config['site']['path']."/" : '';
return "http://".$config['site']['server'].'/'.$pathpart.$relative;
}
function common_date_string($dt) {
// XXX: do some sexy date formatting
// return date(DATE_RFC822, $dt);
return $dt;
}
function common_date_w3dtf($dt) {
$t = strtotime($dt);
return date(DATE_W3C, $t);
}
function common_redirect($url, $code=307) {
static $status = array(301 => "Moved Permanently",
302 => "Found",
303 => "See Other",
307 => "Temporary Redirect");
header("Status: ${code} $status[$code]");
header("Location: $url");
common_element('a', array('href' => $url), $url);
}
function common_broadcast_notice($notice) {
// XXX: broadcast notices to remote subscribers
// XXX: broadcast notices to SMS
// XXX: broadcast notices to Jabber
// XXX: broadcast notices to other IM
// XXX: use a queue system like http://code.google.com/p/microapps/wiki/NQDQ
return true;
}
function common_profile_url($nickname) {
return common_local_url('showstream', array('nickname' => $nickname));
}
function common_notice_form() {
common_element_start('form', array('id' => 'newnotice', 'method' => 'POST',
'action' => common_local_url('newnotice')));
common_textarea('noticecontent', _t('What\'s up?'));
common_submit('submit', _t('Send'));
common_element_end('form');
}
function common_mint_tag($extra) {
global $config;
return
'tag:'.$config['tag']['authority'].','.
$config['tag']['date'].':'.$config['tag']['prefix'].$extra;
}
# Should make up a reasonable root URL
function common_root_url() {
return common_path('');
}
# returns $bytes bytes of random data as a hexadecimal string
# "good" here is a goal and not a guarantee
function common_good_rand($bytes) {
# XXX: use random.org...?
if (file_exists('/dev/urandom')) {
return common_urandom($bytes);
} else { # FIXME: this is probably not good enough
return common_mtrand($bytes);
}
}
function common_urandom($bytes) {
$h = fopen('/dev/urandom', 'rb');
# should not block
$src = fread($h, $bytes);
fclose($h);
$enc = '';
for ($i = 0; $i < $bytes; $i++) {
$enc .= sprintf("%02x", (ord($src[$i])));
}
return $enc;
}
function common_mtrand($bytes) {
$enc = '';
for ($i = 0; $i < $bytes; $i++) {
$enc .= sprintf("%02x", mt_rand(0, 255));
}
return $enc;
}
function common_set_returnto($url) {
common_ensure_session();
$_SESSION['returnto'] = $url;
}
function common_get_returnto() {
common_ensure_session();
return $_SESSION['returnto'];
}
function common_timestamp() {
return date('YmdHis');
}
// XXX: set up gettext
function _t($str) {
return $str;
}
function common_ensure_syslog() {
static $initialized = false;
if (!$initialized) {
global $config;
define_syslog_variables();
openlog($config['syslog']['appname'], 0, LOG_USER);
$initialized = true;
}
}
function common_log($priority, $msg, $filename=NULL) {
common_ensure_syslog();
syslog($priority, $msg);
}
function common_debug($msg, $filename=NULL) {
if ($filename) {
common_log(LOG_DEBUG, basename($filename).' - '.$msg);
} else {
common_log(LOG_DEBUG, $msg);
}
}
function common_valid_http_url($url) {
return Validate::uri($url, array('allowed_schemes' => array('http', 'https')));
}
function common_valid_tag($tag) {
if (preg_match('/^tag:(.*?),(\d{4}(-\d{2}(-\d{2})?)?):(.*)$/', $tag, $matches)) {
return (Validate::email($matches[1]) ||
preg_match('/^([\w-\.]+)$/', $matches[1]));
}
return false;
}