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-rw-r--r--lib/upload.php78
1 files changed, 78 insertions, 0 deletions
diff --git a/lib/upload.php b/lib/upload.php
index a7dd7611d..ac926403d 100644
--- a/lib/upload.php
+++ b/lib/upload.php
@@ -3,6 +3,34 @@
* Helper library for working with uploads
*/
+/**
+ * Guess on the mimetype based on file extension
+ *
+ * @param string $originalName
+ * @return string
+ */
+function tp_upload_get_mimetype($originalName) {
+ $extension = substr(strrchr($originalName, '.'), 1);
+ switch ($extension) {
+ case 'png':
+ return 'image/png';
+ break;
+ case 'gif':
+ return 'image/gif';
+ break;
+ case 'jpg':
+ default:
+ return 'image/jpeg';
+ break;
+ }
+}
+
+/**
+ * Check if this is an image
+ *
+ * @param string $mime
+ * @return bool false = not image
+ */
function tp_upload_check_format($mime) {
$accepted_formats = array(
'image/jpeg',
@@ -18,6 +46,13 @@ function tp_upload_check_format($mime) {
return true;
}
+/**
+ * Check if there is enough memory to process this image
+ *
+ * @param string $image_lib
+ * @param int $num_pixels
+ * @return bool false = not enough memory
+ */
function tp_upload_memory_check($image_lib, $num_pixels) {
if ($image_lib !== 'GD') {
return true;
@@ -35,4 +70,47 @@ function tp_upload_memory_check($image_lib, $num_pixels) {
}
return true;
+}
+
+/**
+ * Check if image is within limits
+ *
+ * @param int $image_size
+ * @return bool false = too large
+ */
+function tp_upload_check_max_size($image_size) {
+ $max_file_size = (float) get_plugin_setting('maxfilesize','tidypics');
+ if (!$max_file_size) {
+ // default to 5 MB if not set
+ $max_file_size = 5;
+ }
+ // convert to bytes from MBs
+ $max_file_size = 1024 * 1024 * $max_file_size;
+ return $image_size <= $max_file_size;
+}
+
+/**
+ * Check if this image pushes user over quota
+ *
+ * @param int $image_size
+ * @param int $owner_guid
+ * @return bool false = exceed quota
+ */
+function tp_upload_check_quota($image_size, $owner_guid) {
+ static $quota;
+
+ if (!isset($quota)) {
+ $quota = get_plugin_setting('quota','tidypics');
+ $quota = 1024 * 1024 * $quota;
+ }
+
+ if ($quota == 0) {
+ // no quota
+ return true;
+ }
+
+ $image_repo_size_md = get_metadata_byname($owner_guid, "image_repo_size");
+ $image_repo_size = (int)$image_repo_size_md->value;
+
+ return ($image_repo_size + $image_size) < $quota;
} \ No newline at end of file