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gallery3-contrib/3.0/modules/strip_exif/helpers/strip_exif.php
jingai c75b151a7a strip_exif module: Version 1.
Module to strip specified EXIF and IPTC tags from uploaded photos.
By default, set up to strip location data (but not enabled by default).
2011-08-18 13:46:24 -04:00

100 lines
3.2 KiB
PHP

<?php defined("SYSPATH") or die("No direct script access.");
class strip_exif_Core {
static function run_exiv($base_cmd, $file) {
if (module::get_var("strip_exif", "verbose", 0) >= 1)
$logfile = VARPATH . "modules/strip_exif/log/strip_exif.log";
else
$logfile = "/dev/null";
self::log(1, "Stripping '" . $file . "'");
$cmd = $base_cmd . " \"" . $file . "\" >> " . $logfile . " 2>&1";
self::log(3, " " . $cmd);
exec($cmd);
}
static function strip($item) {
if (!($item->is_photo() && $item->mime_type == "image/jpeg"))
return;
$tags = "";
if (module::get_var("strip_exif", "exif_remove", false)) {
$tags .= "Exif.";
$tags .= preg_replace("/[\s,]+/", " Exif.", module::get_var("strip_exif", "exif_tags", "")) . " ";
}
if (module::get_var("strip_exif", "iptc_remove", false)) {
$tags .= "Iptc.";
$tags .= preg_replace("/[\s,]+/", " Iptc.", module::get_var("strip_exif", "iptc_tags", "")) . " ";
}
$tagList = preg_split("/[\s]+/", $tags, -1, PREG_SPLIT_NO_EMPTY);
$base_cmd = module::get_var("strip_exif", "exiv_path") . " ";
self::log(1, "Stripping tags from item id " . $item->id);
foreach ($tagList as $tag) {
$base_cmd .= "-M\"del " . $tag . "\"" . " ";
self::log(2, " " . $tag);
}
self::log(2, "Using command:");
self::log(2, " " . $base_cmd);
foreach(array($item->file_path(), $item->resize_path(), $item->thumb_path()) as $file) {
self::run_exiv($base_cmd, $file);
}
$parent = $item->parent();
if ($parent->album_cover_item_id == $item->id) {
self::run_exiv($base_cmd, $parent->thumb_path());
}
self::log(1, "Successfully stripped tags from item id " . $item->id);
}
static function whereis($app) {
$op = @shell_exec("whereis " . $app);
if ($op != "") {
$op = explode(" ", $op);
for ($i = 1; $i < count($op); $i++) {
if (file_exists($op[$i]) && !is_dir($op[$i]))
return $op[$i];
}
}
return false;
}
static function verify_path($path) {
if ($path == "")
return 0;
else if (!file_exists($path))
return -1;
else if (is_dir($path))
return -2;
return 1;
}
static function verify_exiv_path($field) {
$v = self::verify_path($field->value);
switch ($v) {
case 0: $field->add_error("required", 1); break;
case -1: $field->add_error("invalid", 1); break;
case -2: $field->add_error("is_dir", 1); break;
}
}
static function log($verbosity, $item) {
if (module::get_var("strip_exif", "verbose", 0) < $verbosity)
return;
if (is_string($item) || is_numeric($item)) {}
else
$item = print_r($item, true);
$fh = fopen(VARPATH . "modules/strip_exif/log/strip_exif.log", "a");
fwrite($fh, date("Y-m-d H:i:s") . ": " . $item . "\n");
fclose($fh);
}
}
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