Add image support

client/.gitignore

@@ -3,3 +3,4 @@ CMakeFiles
 *.cmake
 yacos
 *~
+build-*

client/src/cart_item.c

@@ -179,9 +179,47 @@ void yacos_cart_item_fetch_meta(YacosCartItem *self)
 	// TODO: The soup 's probably memory-leaking all over the place. Check this some time..
 }
 
+static void yacos_cart_item_fetch_image_cb (SoupSession *session, SoupMessage *msg, gpointer user_data)
+{
+	YacosCartItem *self = YACOS_CART_ITEM(user_data);
+	GdkPixbuf *pixbuf_raw, *pixbuf_scaled;
+	GMemoryInputStream *s;
+
+	if (msg->status_code != 200) {
+		g_warning("image: Received error code %d from server.", msg->status_code);
+	} else {
+		s = G_MEMORY_INPUT_STREAM(g_memory_input_stream_new());
+		g_memory_input_stream_add_data(s, msg->response_body->data, msg->response_body->length, NULL);
+		pixbuf_raw = gdk_pixbuf_new_from_stream(G_INPUT_STREAM(s), NULL, NULL);
+		g_object_unref(s);
+		pixbuf_scaled = gdk_pixbuf_scale_simple(pixbuf_raw, 100, 100, GDK_INTERP_BILINEAR);
+		g_object_unref(pixbuf_raw);
+		gtk_image_set_from_pixbuf(GTK_IMAGE(self->priv.image), pixbuf_scaled);
+		g_object_unref(pixbuf_scaled);
+	}
+
+	gtk_stack_set_visible_child(self->priv.stack_image_loader, self->priv.image);
+}
+
 void yacos_cart_item_fetch_image(YacosCartItem *self)
 {
-	return;
+	SoupMessage *msg;
+	gchar *url;
+	gchar *id_str;
+
+	id_str = yacos_tag_id_to_str(self->priv.tag_id);
+	url = g_strdup_printf("%s?image&id=%s", self->priv.api.url_base, id_str);
+	g_free(id_str);
+	msg = soup_message_new("GET", url);
+	soup_message_headers_append (msg->request_headers, "x-token", self->priv.api.token);
+	g_free(url);
+
+	soup_session_queue_message(self->priv.api.soup_session_meta,
+				   msg,
+				   yacos_cart_item_fetch_image_cb,
+				   self);
+
+	/* TODO: More memory leaks? */
 }
 
 yacos_tag_id yacos_cart_item_get_id(YacosCartItem *self)

server/api.php

@@ -2,10 +2,22 @@
 	// This is just a dummy implementation during the development of the GTK+3 GUI
 
 
-if ($_SERVER['HTTP_X_TOKEN'] != "123456") die("Invalid token.\n");
+if ($_SERVER['HTTP_X_TOKEN'] != "123456") {
+	http_response_code(403);
+	die("Invalid token.\n");
+}
+
+$id = $_GET['id'];
+preg_match("/^[A-Za-z0-9]{6,10}$/", $id, $matches);
+if (!$matches) {
+	http_response_code(400);
+	die ("Invalid tag ID.");
+}
+
+// $id is now safe to use
 
 if (isset($_GET['meta'])) {
-	if ($_GET['id'] == "BF09CE") {
+	if ($id == "BF09CE") {
 		?>
 		{
 			"title" : "Cute Wifi Cat",
@@ -13,7 +25,7 @@ if (isset($_GET['meta'])) {
 			"comment" : "It's mewine!"
 		}
 		<?php
-	} else if ($_GET['id'] == "BE6200") {
+	} else if ($id == "BE6200") {
 		?>
 		{
 			"title" : "Crazy Stuff",
@@ -22,6 +34,7 @@ if (isset($_GET['meta'])) {
 		}
 		<?php
 	} else {
+		http_response_code(400);
 		?>
 		{
 			"title" : "INVALID",
@@ -30,5 +43,17 @@ if (isset($_GET['meta'])) {
 		}
 		<?php
 	}
+} else if (isset($_GET['image'])) {
+	header('Content-Type: image/png');
+	$fn = "img/$id.png";
+	if (file_exists($fn)) {
+		readfile($fn);
+	} else {
+		http_response_code(404);
+		die ("Image not found.");
+	}
+} else {
+	http_response_code(400);
+	die("Invalid request.");
 }
 ?>