forked from migurski/paperwalking
/
data.php
1237 lines (948 loc) · 42.4 KB
/
data.php
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<?php
require_once 'JSON.php';
require_once 'PEAR.php';
require_once 'DB.php';
require_once 'output.php';
require_once 'FPDF/fpdf.php';
require_once 'Crypt/HMAC.php';
require_once 'HTTP/Request.php';
require_once 'Net/URL.php';
if(!function_exists('imagecreatefromstring'))
die_with_code(500, "Missing function imagecreatefromstring from PHP image processing and GD library");
define('STEP_UPLOADING', 0);
define('STEP_QUEUED', 1);
define('STEP_SIFTING', 2);
define('STEP_FINDING_NEEDLES', 3);
define('STEP_READING_QR_CODE', 4);
define('STEP_TILING_UPLOADING', 5);
define('STEP_FINISHED', 6);
define('STEP_BAD_QRCODE', 98);
define('STEP_ERROR', 99);
define('STEP_FATAL_ERROR', 100);
define('STEP_FATAL_QRCODE_ERROR', 101);
function &get_db_connection()
{
$dbh =& DB::connect(DB_DSN);
if(PEAR::isError($dbh))
die_with_code(500, "{$dbh->message}\n{$q}\n");
return $dbh;
}
function write_userdata($id, $language)
{
$userdata = array('user' => $id, 'language' => $language);
$encoded_value = json_encode($userdata);
$signed_string = $encoded_value.' '.md5($encoded_value.COOKIE_SIGNATURE);
//error_log("signing string: {$signed_string}\n", 3, dirname(__FILE__).'/../tmp/log.txt');
return $signed_string;
}
/**
* Return userdata (user ID, language) based on a signed string and an accept-language string.
* @param string $signed_string JSON string, generally from a cookie, signed with an MD5 hash
* @param string $accept_language_header Content of the HTTP Accept-Language request header, e.g. "en-us,en;q=0.5"
* @return string Array with user ID and user language.
*/
function read_userdata($signed_string, $accept_language_header)
{
$default_language = get_preferred_language($accept_language_header);
if(preg_match('/^(\w{8})$/', $signed_string))
{
// looks like an old-style user ID cookie rather than a signed string
//error_log("found plain username in: {$signed_string}\n", 3, dirname(__FILE__).'/../tmp/log.txt');
return array($signed_string, $default_language);
}
if(preg_match('/^(.+) (\w{32})$/', $signed_string, $m))
{
list($encoded_value, $found_signature) = array($m[1], $m[2]);
$expected_signature = md5($encoded_value.COOKIE_SIGNATURE);
if($expected_signature == $found_signature)
{
// signature checks out
//error_log("found encoded userdata in: {$signed_string}\n", 3, dirname(__FILE__).'/../tmp/log.txt');
$userdata = json_decode($encoded_value, true);
$language = empty($userdata['language']) ? $default_language : $userdata['language'];
return array($userdata['user'], $language);
}
}
//error_log("found no userdata in: {$signed_string}\n", 3, dirname(__FILE__).'/../tmp/log.txt');
return array(null, $default_language);
}
/**
* Get a useful type back from an Accept header.
*
* If the single argument is one of "html" or "xml", just return
* what's appropriate without pretending it's a full header.
*/
function get_preferred_type($accept_type_header, $acceptable_types)
{
$acceptable_types = is_array($acceptable_types)
? $acceptable_types
: array('application/paperwalking+xml', 'application/json', 'text/html');
if($accept_type_header == 'xml')
return 'application/paperwalking+xml';
if($accept_type_header == 'html')
return 'text/html';
if($accept_type_header == 'json')
return 'application/json';
// break up string into pieces (types and q factors)
preg_match_all('#([\*a-z]+/([\*\+a-z]+)?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?#i', $accept_type_header, $type_parse);
$types = array();
if(count($type_parse[1]))
{
// create a list like "text/html" => 0.8
$types = array_combine($type_parse[1], $type_parse[4]);
// set default to 1 for any without q factor
foreach($types as $l => $val)
$types[$l] = ($val === '') ? 1 : $val;
// sort list based on weight then by given order
$weighted_order = array_values($types);
$given_order = range(1, count($types));
array_multisort($weighted_order, SORT_DESC, SORT_NUMERIC,
$given_order, SORT_ASC, SORT_NUMERIC,
$types);
} else {
$types = array();
}
foreach(array_keys($types) as $type)
{
if(in_array($type, $acceptable_types))
return $type;
}
// HTML is the default
return 'text/html';
}
/**
* Adapted from http://www.thefutureoftheweb.com/blog/use-accept-language-header
*/
function get_preferred_language($accept_language_header)
{
// break up string into pieces (languages and q factors)
preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $accept_language_header, $lang_parse);
$languages = array();
if(count($lang_parse[1]))
{
// create a list like "en" => 0.8
$languages = array_combine($lang_parse[1], $lang_parse[4]);
// set default to 1 for any without q factor
foreach($languages as $l => $val)
$languages[$l] = ($val === '') ? 1 : $val;
// sort list based on value
arsort($languages, SORT_NUMERIC);
} else {
$languages = array();
}
foreach(array_keys($languages) as $language)
{
// any one of en-us, en-gb, etc.
if(preg_match('/^en\b/', $language))
return 'en';
}
// english is the default
return 'en';
}
/**
* Returns count, offset, per-page, page.
*/
function get_pagination($input)
{
if(is_numeric($input))
return array(intval($input), 0, intval($input), 1);
if(!is_array($input))
return array(10, 0, 10, 1);
$count = intval(is_numeric($input['count']) ? $input['count'] : 32);
$offset = intval(is_numeric($input['offset']) ? $input['offset'] : 0);
$perpage = intval(is_numeric($input['perpage']) ? $input['perpage'] : 32);
$page = intval(is_numeric($input['page']) ? $input['page'] : 1);
if(is_numeric($input['offset'])) {
$perpage = $count;
$page = 1 + floor($offset / $count);
} elseif(is_numeric($input['page'])) {
$count = $perpage;
$offset = ($page - 1) * $perpage;
}
return array(max(0, $count), max(0, $offset), max(0, $perpage), max(1, $page));
}
if(!function_exists('json_encode'))
{
function json_encode($value)
{
$json = new Services_JSON(SERVICES_JSON_LOOSE_TYPE);
return $json->encode($value);
}
}
if(!function_exists('json_decode'))
{
function json_decode($value, $assoc=false)
{
$json = new Services_JSON($assoc ? SERVICES_JSON_LOOSE_TYPE : null);
return $json->decode($value);
}
}
function generate_id()
{
$chars = 'qwrtpsdfghklzxcvbnm23456789';
$id = '';
while(strlen($id) < 8)
$id .= substr($chars, rand(0, strlen($chars) - 1), 1);
return $id;
}
function table_columns(&$dbh, $table)
{
$q = 'DESCRIBE '.$dbh->escapeSimple($table);
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
$columns = array();
while($col = $res->fetchRow(DB_FETCHMODE_ASSOC))
$columns[$col['Field']] = $col['Type'];
return $columns;
}
function add_print(&$dbh, $user_id)
{
while(true)
{
$print_id = generate_id();
$q = sprintf('INSERT INTO prints
SET id = %s, user_id = %s',
$dbh->quoteSmart($print_id),
$dbh->quoteSmart($user_id));
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
{
if($res->getCode() == DB_ERROR_ALREADY_EXISTS)
continue;
die_with_code(500, "{$res->message}\n{$q}\n");
}
return get_print($dbh, $print_id);
}
}
function add_print_page(&$dbh, $print_id, $page_number)
{
$q = sprintf('INSERT INTO pages
SET print_id = %s, page_number = %d',
$dbh->quoteSmart($print_id),
$dbh->quoteSmart($page_number));
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
{
die_with_code(500, "{$res->message}\n{$q}\n");
}
return get_print_page($dbh, $print_id, $page_number);
}
function add_scan(&$dbh, $user_id)
{
while(true)
{
$scan_id = generate_id();
$q = sprintf('INSERT INTO scans
SET id = %s, user_id = %s',
$dbh->quoteSmart($scan_id),
$dbh->quoteSmart($user_id));
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
{
if($res->getCode() == DB_ERROR_ALREADY_EXISTS)
continue;
die_with_code(500, "{$res->message}\n{$q}\n");
}
return get_scan($dbh, $scan_id);
}
}
function add_message(&$dbh, $content)
{
$q = sprintf('INSERT INTO messages
SET content = %s, available = NOW()',
$dbh->quoteSmart($content));
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
return true;
}
function add_log(&$dbh, $content)
{
$q = sprintf('INSERT INTO logs
SET content = %s',
$dbh->quoteSmart($content));
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
return true;
}
function get_prints(&$dbh, $page)
{
list($count, $offset, $perpage, $page) = get_pagination($page);
$q = sprintf("SELECT paper_size, orientation, provider,
pdf_url, preview_url, geotiff_url,
id, north, south, east, west, zoom,
(north + south) / 2 AS latitude,
(east + west) / 2 AS longitude,
UNIX_TIMESTAMP(created) AS created,
UNIX_TIMESTAMP(composed) AS composed,
UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(created) AS age,
country_name, country_woeid, region_name, region_woeid, place_name, place_woeid,
user_id
FROM prints
WHERE composed
ORDER BY created DESC
LIMIT %d OFFSET %d",
$count, $offset);
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
$rows = array();
while($row = $res->fetchRow(DB_FETCHMODE_ASSOC))
{
// TODO: ditch special-case for provider
if(empty($row['provider']))
$row['provider'] = reset(reset(get_map_providers()));
// TODO: ditch special-case for pdf_url
if(empty($row['pdf_url']) && S3_BUCKET_ID)
$row['pdf_url'] = sprintf('http://%s.s3.amazonaws.com/prints/%s/walking-paper-%s.pdf', S3_BUCKET_ID, $row['id'], $row['id']);
// TODO: ditch special-case for preview_url
if(empty($row['preview_url']) && S3_BUCKET_ID)
$row['preview_url'] = sprintf('http://%s.s3.amazonaws.com/prints/%s/preview.png', S3_BUCKET_ID, $row['id']);
$rows[] = $row;
}
return $rows;
}
function get_print(&$dbh, $print_id)
{
$atlas_part = false;
if(preg_match('#^(\w+)/(\d+)$#', $print_id, $m))
list($print_id, $page_number) = array($m[1], $m[2]);
$q = sprintf("SELECT layout, atlas_pages,
paper_size, orientation, provider,
pdf_url, preview_url, geotiff_url,
id, form_id, north, south, east, west, zoom,
(north + south) / 2 AS latitude,
(east + west) / 2 AS longitude,
UNIX_TIMESTAMP(created) AS created,
UNIX_TIMESTAMP(composed) AS composed,
UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(created) AS age,
country_name, country_woeid, region_name, region_woeid, place_name, place_woeid,
user_id
FROM prints
WHERE id = %s",
$dbh->quoteSmart($print_id));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
$row = $res->fetchRow(DB_FETCHMODE_ASSOC);
// TODO: ditch special-case for provider
if(empty($row['provider']))
$row['provider'] = reset(reset(get_map_providers()));
// TODO: ditch special-case for pdf_url
if(empty($row['pdf_url']) && S3_BUCKET_ID)
$row['pdf_url'] = sprintf('http://%s.s3.amazonaws.com/prints/%s/walking-paper-%s.pdf', S3_BUCKET_ID, $row['id'], $row['id']);
// TODO: ditch special-case for preview_url
if(empty($row['preview_url']) && S3_BUCKET_ID)
$row['preview_url'] = sprintf('http://%s.s3.amazonaws.com/prints/%s/preview.png', S3_BUCKET_ID, $row['id']);
if($page_number)
{
$row['selected_page'] = get_print_page($dbh, $print_id, $page_number);
}
return $row;
}
function get_print_page(&$dbh, $print_id, $page_number)
{
$q = sprintf("SELECT print_id, page_number,
provider, preview_url,
north, south, east, west, zoom,
(north + south) / 2 AS latitude,
(east + west) / 2 AS longitude,
UNIX_TIMESTAMP(created) AS created,
UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(created) AS age,
country_name, country_woeid, region_name, region_woeid, place_name, place_woeid,
user_id
FROM pages
WHERE print_id = %s
AND page_number = %s",
$dbh->quoteSmart($print_id),
$dbh->quoteSmart($page_number));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
$row = $res->fetchRow(DB_FETCHMODE_ASSOC);
return $row;
}
function get_print_pages(&$dbh, $print_id)
{
$q = sprintf("SELECT print_id, page_number,
provider, preview_url,
north, south, east, west, zoom,
(north + south) / 2 AS latitude,
(east + west) / 2 AS longitude,
UNIX_TIMESTAMP(created) AS created,
UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(created) AS age,
country_name, country_woeid, region_name, region_woeid, place_name, place_woeid,
user_id
FROM pages
WHERE print_id = %s",
$dbh->quoteSmart($print_id));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
$rows = array();
while($row = $res->fetchRow(DB_FETCHMODE_ASSOC))
{
$rows[] = $row;
}
return $rows;
}
function get_prints_by_month_year(&$dbh, $date)
{
$month = $date['mon'];
$year = $date['year'];
$q = sprintf("SELECT paper_size, orientation, provider,
pdf_url, preview_url, geotiff_url,
id, north, south, east, west, zoom,
(north + south) / 2 AS latitude,
(east + west) / 2 AS longitude,
UNIX_TIMESTAMP(created) AS created,
UNIX_TIMESTAMP(composed) AS composed,
UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(created) AS age,
country_name, country_woeid, region_name, region_woeid, place_name, place_woeid,
user_id
FROM prints
WHERE MONTH(created)=%s AND YEAR(created)=%s
ORDER BY created DESC",
$dbh->quoteSmart($month), $dbh->quoteSmart($year));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
$rows = array();
while($row = $res->fetchRow(DB_FETCHMODE_ASSOC))
{
$rows[] = $row;
}
return $rows;
}
function get_prints_by_user_id(&$dbh, $user_id)
{
$q = sprintf("SELECT paper_size, orientation, provider,
pdf_url, preview_url, geotiff_url,
id, north, south, east, west, zoom,
(north + south) / 2 AS latitude,
(east + west) / 2 AS longitude,
UNIX_TIMESTAMP(created) AS created,
UNIX_TIMESTAMP(composed) AS composed,
UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(created) AS age,
country_name, country_woeid, region_name, region_woeid, place_name, place_woeid,
user_id
FROM prints
WHERE user_id=%s
ORDER BY created DESC",
$dbh->quoteSmart($user_id));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
$rows = array();
while($row = $res->fetchRow(DB_FETCHMODE_ASSOC))
{
$rows[] = $row;
}
return $rows;
}
function get_scans(&$dbh, $page, $include_private=false)
{
list($count, $offset, $perpage, $page) = get_pagination($page);
$q = sprintf("SELECT p.place_name AS print_place_name, p.place_woeid AS print_place_woeid,
s.id, s.print_id,
s.min_row, s.min_column, s.min_zoom,
s.max_row, s.max_column, s.max_zoom,
s.description, s.is_private, s.will_edit,
(p.north + p.south) / 2 AS print_latitude,
(p.east + p.west) / 2 AS print_longitude,
UNIX_TIMESTAMP(s.created) AS created,
UNIX_TIMESTAMP(s.decoded) AS decoded,
UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(s.created) AS age,
failed, s.base_url, s.uploaded_file,
s.has_geotiff, s.has_stickers,
s.has_geojpeg, s.geojpeg_bounds,
s.user_id
FROM scans AS s
LEFT JOIN prints AS p
ON p.id = s.print_id
WHERE decoded
AND %s
ORDER BY s.created DESC
LIMIT %d OFFSET %d",
($include_private ? '1' : "s.is_private='no'"),
$count, $offset);
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
$rows = array();
while($row = $res->fetchRow(DB_FETCHMODE_ASSOC))
{
// TODO: ditch special-case for base_url
if(empty($row['base_url']))
$row['base_url'] = sprintf('http://%s.s3.amazonaws.com/scans/%s', S3_BUCKET_ID, $row['id']);
$rows[] = $row;
}
return $rows;
}
function get_scan(&$dbh, $scan_id)
{
$q = sprintf("SELECT id, print_id,
min_row, min_column, min_zoom,
max_row, max_column, max_zoom,
description, is_private, will_edit,
UNIX_TIMESTAMP(created) AS created,
UNIX_TIMESTAMP(decoded) AS decoded,
UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(created) AS age,
failed, base_url, uploaded_file,
has_geotiff, has_stickers,
has_geojpeg, geojpeg_bounds,
decoding_json, user_id
FROM scans
WHERE id = %s",
$dbh->quoteSmart($scan_id));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
$scan = $res->fetchRow(DB_FETCHMODE_ASSOC);
// TODO: ditch special-case for base_url
if(empty($scan['base_url']))
$scan['base_url'] = sprintf('http://%s.s3.amazonaws.com/scans/%s', S3_BUCKET_ID, $scan['id']);
return $scan;
}
function get_message(&$dbh, $timeout)
{
$res = $dbh->query('LOCK TABLES messages WRITE');
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
$q = sprintf('SELECT id, content
FROM messages
WHERE available < NOW()
AND deleted = 0
ORDER BY available ASC
LIMIT 1');
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
if($msg = $res->fetchRow(DB_FETCHMODE_ASSOC)) {
postpone_message($dbh, $msg['id'], $timeout);
} else {
$msg = false;
}
$res = $dbh->query('UNLOCK TABLES');
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
return $msg;
}
function set_print(&$dbh, $print)
{
$old_print = get_print($dbh, $print['id']);
if(!$old_print)
return false;
$update_clauses = array();
foreach(array('north', 'south', 'east', 'west', 'zoom', 'paper_size', 'orientation', 'layout', 'provider', 'pdf_url', 'preview_url', 'geotiff_url', 'atlas_pages', 'form_id', 'user_id', 'country_name', 'country_woeid', 'region_name', 'region_woeid', 'place_name', 'place_woeid', 'progress') as $field)
if(!is_null($print[$field]))
if($print[$field] != $old_print[$field])
$update_clauses[] = sprintf('%s = %s', $field, $dbh->quoteSmart($print[$field]));
if(empty($update_clauses)) {
error_log("skipping print {$print['id']} update since there's nothing to change");
} else {
$update_clauses = join(', ', $update_clauses);
$q = "UPDATE prints
SET {$update_clauses}
WHERE id = ".$dbh->quoteSmart($print['id']);
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
}
return get_print($dbh, $print['id']);
}
function set_print_page(&$dbh, $page)
{
$old_page = get_print_page($dbh, $page['print_id'], $page['page_number']);
if(!$old_page)
return false;
$update_clauses = array();
foreach(array('north', 'south', 'east', 'west', 'zoom', 'provider', 'preview_url', 'user_id', 'country_name', 'country_woeid', 'region_name', 'region_woeid', 'place_name', 'place_woeid') as $field)
if(!is_null($page[$field]))
if($page[$field] != $old_page[$field])
$update_clauses[] = sprintf('%s = %s', $field, $dbh->quoteSmart($page[$field]));
if(empty($update_clauses)) {
error_log("skipping page {$page['print_id']}/{$page['page_number']} update since there's nothing to change");
} else {
$update_clauses = join(', ', $update_clauses);
$q = sprintf('UPDATE pages SET %s
WHERE print_id = %s
AND page_number = %s',
$update_clauses,
$dbh->quoteSmart($page['print_id']),
$dbh->quoteSmart($page['page_number']));
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
}
return get_print_page($dbh, $page['print_id'], $page['page_number']);
}
function set_scan(&$dbh, $scan)
{
$old_scan = get_scan($dbh, $scan['id']);
if(!$old_scan)
return false;
$update_clauses = array();
$column_names = array_keys(table_columns($dbh, 'scans'));
// TODO: ditch dependency on table_columns()
// TODO: ditch special-case for base_url
foreach(array('print_id', 'user_id', 'min_row', 'min_column', 'min_zoom', 'max_row', 'max_column', 'max_zoom', 'description', 'is_private', 'will_edit', 'base_url', 'uploaded_file', 'decoding_json', 'has_geotiff', 'has_geojpeg', 'geojpeg_bounds', 'has_stickers', 'progress') as $field)
if(in_array($field, $column_names) && !is_null($scan[$field]))
if($scan[$field] != $old_scan[$field] || in_array($field, array('base_url')))
$update_clauses[] = sprintf('%s = %s', $field, $dbh->quoteSmart($scan[$field]));
if(empty($update_clauses)) {
error_log("skipping scan {$scan['id']} update since there's nothing to change");
} else {
$update_clauses = join(', ', $update_clauses);
$q = "UPDATE scans
SET {$update_clauses}
WHERE id = ".$dbh->quoteSmart($scan['id']);
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
}
return get_scan($dbh, $scan['id']);
}
function finish_print(&$dbh, $print_id)
{
$q = sprintf('UPDATE pages SET composed = NOW() WHERE print_id = %s',
$dbh->quoteSmart($print_id));
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
$q = sprintf('UPDATE prints SET composed = NOW() WHERE id = %s',
$dbh->quoteSmart($print_id));
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
}
function finish_scan(&$dbh, $scan_id)
{
$q = sprintf('UPDATE scans SET decoded = NOW() WHERE id = %s',
$dbh->quoteSmart($scan_id));
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
}
function fail_scan(&$dbh, $scan_id, $failure=1)
{
$q = sprintf('UPDATE scans SET failed = %s WHERE id = %s',
$dbh->quoteSmart($failure),
$dbh->quoteSmart($scan_id));
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
}
function delete_scan(&$dbh, $scan_id)
{
$q = sprintf('DELETE FROM scans
WHERE id = %s',
$dbh->quoteSmart($scan_id));
error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
return true;
}
function flush_scans(&$dbh, $age)
{
$due = time() + 5;
while(time() < $due)
{
$q = sprintf('SELECT id
FROM scans
WHERE NOT decoded
AND created < NOW() - INTERVAL %d SECOND
LIMIT 1',
$age);
//error_log(preg_replace('/\s+/', ' ', $q));
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
$scan = $res->fetchRow(DB_FETCHMODE_ASSOC);
if(empty($scan))
break;
delete_scan($dbh, $scan['id']);
}
return true;
}
function postpone_message(&$dbh, $message_id, $timeout)
{
$q = sprintf('UPDATE messages
SET available = NOW() + INTERVAL %d SECOND
WHERE id = %d',
$timeout,
$message_id);
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
}
function delete_message(&$dbh, $message_id)
{
$q = sprintf('UPDATE messages
SET deleted = 1, available = NOW()
WHERE id = %d',
$message_id);
$res = $dbh->query($q);
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
}
function verify_s3_etag($object_id, $expected_etag)
{
$url = s3_signed_object_url($object_id, time() + 300, 'HEAD');
$req = new HTTP_Request($url);
$req->setMethod('HEAD');
$res = $req->sendRequest();
if(PEAR::isError($res))
die_with_code(500, "{$res->message}\n{$q}\n");
if($req->getResponseCode() == 200)
return $req->getResponseHeader('etag') == $expected_etag;
return false;
}
/**
* Get a base URL (incl. trailing slash) for the current file post service.
*/
function get_post_baseurl($dirname)
{
return (AWS_ACCESS_KEY && AWS_SECRET_KEY && S3_BUCKET_ID)
? s3_get_post_baseurl($dirname)
: local_get_post_baseurl($dirname);
}
/**
* @param $object_id Name to assign
* @param $content_bytes Content of file
* @param $mime_type MIME/Type to assign
* @return mixed URL of uploaded file on success, false or PEAR_Error on failure.
*/
function post_file($object_id, $content_bytes, $mime_type)
{
return (AWS_ACCESS_KEY && AWS_SECRET_KEY && S3_BUCKET_ID)
? post_file_s3($object_id, $content_bytes, $mime_type)
: post_file_local($object_id, $content_bytes);
}
/**
* @param $object_id Name to assign
* @param $content_bytes Content of file
* @return mixed URL of uploaded file on success, false or PEAR_Error on failure.
*/
function post_file_local($object_id, $content_bytes)
{
$filepath = realpath(dirname(__FILE__).'/../www/files');
$pathbits = explode('/', $object_id);
while(count($pathbits) && is_dir($filepath) && is_writeable($filepath))
{
$filepath .= '/'.array_shift($pathbits);
if(count($pathbits) >= 1)
{
@mkdir($filepath);
@chmod($filepath, 0777);
}
}
$url = 'http://'.get_domain_name().get_base_dir().'/files/'.$object_id;
if($fh = @fopen($filepath, 'w'))
{
fwrite($fh, $content_bytes);
chmod($filepath, 0666);
fclose($fh);
return $url;
}
return false;
}