567 lines
15 KiB
C
567 lines
15 KiB
C
/*
|
|
Copyright (C) 2008 Christian Dywan <christian@twotoasts.de>
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
See the file COPYING for the full license text.
|
|
*/
|
|
|
|
#if HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#include "katze-net.h"
|
|
|
|
#if HAVE_LIBSOUP
|
|
#include <libsoup/soup.h>
|
|
#endif
|
|
|
|
struct _KatzeNet
|
|
{
|
|
GObject parent_instance;
|
|
|
|
GHashTable* memory;
|
|
gchar* cache_path;
|
|
guint cache_size;
|
|
|
|
#if HAVE_LIBSOUP
|
|
SoupSession* session;
|
|
#endif
|
|
};
|
|
|
|
struct _KatzeNetClass
|
|
{
|
|
GObjectClass parent_class;
|
|
};
|
|
|
|
G_DEFINE_TYPE (KatzeNet, katze_net, G_TYPE_OBJECT)
|
|
|
|
static void
|
|
katze_net_finalize (GObject* object);
|
|
|
|
static void
|
|
katze_net_class_init (KatzeNetClass* class)
|
|
{
|
|
GObjectClass* gobject_class;
|
|
|
|
gobject_class = G_OBJECT_CLASS (class);
|
|
gobject_class->finalize = katze_net_finalize;
|
|
}
|
|
|
|
static void
|
|
katze_net_object_maybe_unref (gpointer object)
|
|
{
|
|
if (object)
|
|
g_object_unref (object);
|
|
}
|
|
|
|
static void
|
|
katze_net_init (KatzeNet* net)
|
|
{
|
|
net->memory = g_hash_table_new_full (g_str_hash, g_str_equal,
|
|
g_free, katze_net_object_maybe_unref);
|
|
net->cache_path = g_build_filename (g_get_user_cache_dir (),
|
|
PACKAGE_NAME, NULL);
|
|
|
|
#if HAVE_LIBSOUP
|
|
net->session = soup_session_async_new ();
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
katze_net_finalize (GObject* object)
|
|
{
|
|
KatzeNet* net = KATZE_NET (object);
|
|
|
|
g_hash_table_destroy (net->memory);
|
|
katze_assign (net->cache_path, NULL);
|
|
|
|
G_OBJECT_CLASS (katze_net_parent_class)->finalize (object);
|
|
}
|
|
|
|
/**
|
|
* katze_net_new:
|
|
*
|
|
* Instantiates a new #KatzeNet singleton.
|
|
*
|
|
* Subsequent calls will ref the initial instance.
|
|
*
|
|
* Return value: a new #KatzeNet
|
|
**/
|
|
KatzeNet*
|
|
katze_net_new (void)
|
|
{
|
|
KatzeNet* net = g_object_new (KATZE_TYPE_NET,
|
|
NULL);
|
|
|
|
return net;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
KatzeNet* net;
|
|
KatzeNetStatusCb status_cb;
|
|
KatzeNetTransferCb transfer_cb;
|
|
gpointer user_data;
|
|
KatzeNetRequest* request;
|
|
} KatzeNetPriv;
|
|
|
|
static void
|
|
katze_net_priv_free (KatzeNetPriv* priv)
|
|
{
|
|
KatzeNetRequest* request;
|
|
|
|
request = priv->request;
|
|
|
|
g_free (request->uri);
|
|
g_free (request->mime_type);
|
|
g_free (request->data);
|
|
|
|
g_free (request);
|
|
g_free (priv);
|
|
}
|
|
|
|
static gchar*
|
|
katze_net_get_cached_path (KatzeNet* net,
|
|
const gchar* uri,
|
|
const gchar* subfolder)
|
|
{
|
|
gchar* cache_path;
|
|
gchar* checksum;
|
|
gchar* extension;
|
|
gchar* cached_filename;
|
|
gchar* cached_path;
|
|
|
|
if (subfolder)
|
|
cache_path = g_build_filename (net->cache_path, subfolder, NULL);
|
|
else
|
|
cache_path = net->cache_path;
|
|
g_mkdir_with_parents (cache_path, 0755);
|
|
#if GLIB_CHECK_VERSION (2, 16, 0)
|
|
checksum = g_compute_checksum_for_string (G_CHECKSUM_MD5, uri, -1);
|
|
#else
|
|
checksum = g_strdup_printf ("%u", g_str_hash (uri));
|
|
#endif
|
|
|
|
extension = g_strrstr (uri, ".");
|
|
cached_filename = g_strdup_printf ("%s%s", checksum,
|
|
extension ? extension : "");
|
|
g_free (checksum);
|
|
cached_path = g_build_filename (cache_path, cached_filename, NULL);
|
|
g_free (cached_filename);
|
|
if (subfolder)
|
|
g_free (cache_path);
|
|
return cached_path;
|
|
}
|
|
|
|
#if HAVE_LIBSOUP
|
|
static void
|
|
katze_net_got_body_cb (SoupMessage* msg,
|
|
KatzeNetPriv* priv);
|
|
|
|
static void
|
|
katze_net_got_headers_cb (SoupMessage* msg,
|
|
KatzeNetPriv* priv)
|
|
{
|
|
KatzeNetRequest* request;
|
|
|
|
request = priv->request;
|
|
|
|
switch (msg->status_code)
|
|
{
|
|
case 200:
|
|
request->status = KATZE_NET_VERIFIED;
|
|
break;
|
|
case 301:
|
|
request->status = KATZE_NET_MOVED;
|
|
break;
|
|
default:
|
|
request->status = KATZE_NET_NOT_FOUND;
|
|
}
|
|
|
|
if (!priv->status_cb (request, priv->user_data))
|
|
{
|
|
g_signal_handlers_disconnect_by_func (msg, katze_net_got_headers_cb, priv);
|
|
g_signal_handlers_disconnect_by_func (msg, katze_net_got_body_cb, priv);
|
|
soup_session_cancel_message (priv->net->session, msg, 1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
katze_net_got_body_cb (SoupMessage* msg,
|
|
KatzeNetPriv* priv)
|
|
{
|
|
KatzeNetRequest* request;
|
|
#if 0
|
|
gchar* filename;
|
|
FILE* fp;
|
|
#endif
|
|
|
|
request = priv->request;
|
|
|
|
if (msg->response_body->length > 0)
|
|
{
|
|
#if 0
|
|
/* FIXME: Caching */
|
|
filename = katze_net_get_cached_path (net, request->uri, NULL);
|
|
if ((fp = fopen (filename, "wb")))
|
|
{
|
|
fwrite (msg->response_body->data,
|
|
1, msg->response_body->length, fp);
|
|
fclose (fp);
|
|
}
|
|
g_free (filename);
|
|
#endif
|
|
request->data = g_memdup (msg->response_body->data,
|
|
msg->response_body->length);
|
|
request->length = msg->response_body->length;
|
|
}
|
|
|
|
priv->transfer_cb (request, priv->user_data);
|
|
}
|
|
|
|
static void
|
|
katze_net_finished_cb (SoupMessage* msg,
|
|
KatzeNetPriv* priv)
|
|
{
|
|
katze_net_priv_free (priv);
|
|
}
|
|
#endif
|
|
|
|
gboolean
|
|
katze_net_local_cb (KatzeNetPriv* priv)
|
|
{
|
|
KatzeNetRequest* request;
|
|
gchar* filename;
|
|
gchar* contents;
|
|
gsize length;
|
|
|
|
request = priv->request;
|
|
filename = g_filename_from_uri (request->uri, NULL, NULL);
|
|
|
|
if (!filename || !g_file_test (filename, G_FILE_TEST_EXISTS))
|
|
{
|
|
request->status = KATZE_NET_NOT_FOUND;
|
|
if (priv->status_cb)
|
|
priv->status_cb (request, priv->user_data);
|
|
katze_net_priv_free (priv);
|
|
return FALSE;
|
|
}
|
|
request->status = KATZE_NET_VERIFIED;
|
|
if (priv->status_cb && !priv->status_cb (request, priv->user_data))
|
|
{
|
|
katze_net_priv_free (priv);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!priv->transfer_cb)
|
|
{
|
|
katze_net_priv_free (priv);
|
|
return FALSE;
|
|
}
|
|
|
|
contents = NULL;
|
|
if (!g_file_get_contents (filename, &contents, &length, NULL))
|
|
{
|
|
request->status = KATZE_NET_FAILED;
|
|
priv->transfer_cb (request, priv->user_data);
|
|
katze_net_priv_free (priv);
|
|
return FALSE;
|
|
}
|
|
|
|
request->status = KATZE_NET_DONE;
|
|
request->data = contents;
|
|
request->length = length;
|
|
priv->transfer_cb (request, priv->user_data);
|
|
katze_net_priv_free (priv);
|
|
return FALSE;
|
|
}
|
|
|
|
gboolean
|
|
katze_net_default_cb (KatzeNetPriv* priv)
|
|
{
|
|
KatzeNetRequest* request;
|
|
|
|
request = priv->request;
|
|
request->status = KATZE_NET_NOT_FOUND;
|
|
if (priv->status_cb)
|
|
priv->status_cb (request, priv->user_data);
|
|
katze_net_priv_free (priv);
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* katze_net_load_uri:
|
|
* @net: a #KatzeNet
|
|
* @uri: an URI string
|
|
* @status_cb: function to call for status information
|
|
* @transfer_cb: function to call upon transfer
|
|
* @user_data: data to pass to the callback
|
|
*
|
|
* Requests a transfer of @uri.
|
|
*
|
|
* @status_cb will be called when the status of @uri
|
|
* is verified. The specified callback may be called
|
|
* multiple times unless cancelled.
|
|
*
|
|
* @transfer_cb will be called when the data @uri is
|
|
* pointing to was transferred. Note that even a failed
|
|
* transfer may transfer data.
|
|
*
|
|
* @status_cb will always to be called at least once.
|
|
**/
|
|
void
|
|
katze_net_load_uri (KatzeNet* net,
|
|
const gchar* uri,
|
|
KatzeNetStatusCb status_cb,
|
|
KatzeNetTransferCb transfer_cb,
|
|
gpointer user_data)
|
|
{
|
|
KatzeNetRequest* request;
|
|
KatzeNetPriv* priv;
|
|
#if HAVE_LIBSOUP
|
|
SoupMessage* msg;
|
|
#endif
|
|
|
|
g_return_if_fail (KATZE_IS_NET (net));
|
|
g_return_if_fail (uri != NULL);
|
|
|
|
if (!status_cb && !transfer_cb)
|
|
return;
|
|
|
|
request = g_new0 (KatzeNetRequest, 1);
|
|
request->uri = g_strdup (uri);
|
|
request->mime_type = NULL;
|
|
request->data = NULL;
|
|
|
|
priv = g_new0 (KatzeNetPriv, 1);
|
|
priv->net = net;
|
|
priv->status_cb = status_cb;
|
|
priv->transfer_cb = transfer_cb;
|
|
priv->user_data = user_data;
|
|
priv->request = request;
|
|
|
|
#if HAVE_LIBSOUP
|
|
if (g_str_has_prefix (uri, "http://") || g_str_has_prefix (uri, "https://"))
|
|
{
|
|
msg = soup_message_new ("GET", uri);
|
|
if (status_cb)
|
|
g_signal_connect (msg, "got-headers",
|
|
G_CALLBACK (katze_net_got_headers_cb), priv);
|
|
if (transfer_cb)
|
|
g_signal_connect (msg, "got-body",
|
|
G_CALLBACK (katze_net_got_body_cb), priv);
|
|
g_signal_connect (msg, "finished",
|
|
G_CALLBACK (katze_net_finished_cb), priv);
|
|
soup_session_queue_message (net->session, msg, NULL, NULL);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
if (g_str_has_prefix (uri, "file://"))
|
|
{
|
|
g_idle_add ((GSourceFunc)katze_net_local_cb, priv);
|
|
return;
|
|
}
|
|
|
|
g_idle_add ((GSourceFunc)katze_net_default_cb, priv);
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
KatzeNet* net;
|
|
gchar* icon_file;
|
|
KatzeNetIconCb icon_cb;
|
|
GtkWidget* widget;
|
|
gpointer user_data;
|
|
} KatzeNetIconPriv;
|
|
|
|
static void
|
|
katze_net_icon_priv_free (KatzeNetIconPriv* priv)
|
|
{
|
|
g_free (priv->icon_file);
|
|
g_object_unref (priv->widget);
|
|
g_free (priv);
|
|
}
|
|
|
|
static gboolean
|
|
katze_net_icon_status_cb (KatzeNetRequest* request,
|
|
KatzeNetIconPriv* priv)
|
|
{
|
|
switch (request->status)
|
|
{
|
|
case KATZE_NET_VERIFIED:
|
|
if (request->mime_type &&
|
|
!g_str_has_prefix (request->mime_type, "image/"))
|
|
{
|
|
katze_net_icon_priv_free (priv);
|
|
return FALSE;
|
|
}
|
|
break;
|
|
case KATZE_NET_MOVED:
|
|
break;
|
|
default:
|
|
katze_net_icon_priv_free (priv);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
katze_net_icon_transfer_cb (KatzeNetRequest* request,
|
|
KatzeNetIconPriv* priv)
|
|
{
|
|
GdkPixbuf* pixbuf;
|
|
FILE* fp;
|
|
GdkPixbuf* pixbuf_scaled;
|
|
gint icon_width, icon_height;
|
|
size_t ret;
|
|
|
|
if (request->status == KATZE_NET_MOVED)
|
|
return;
|
|
|
|
pixbuf = NULL;
|
|
if (request->data)
|
|
{
|
|
if ((fp = fopen (priv->icon_file, "wb")))
|
|
{
|
|
ret = fwrite (request->data, 1, request->length, fp);
|
|
fclose (fp);
|
|
if ((ret - request->length) != 0)
|
|
{
|
|
/* FIXME: We need error handling. If this is called,
|
|
it means there was a write error */
|
|
}
|
|
pixbuf = gdk_pixbuf_new_from_file (priv->icon_file, NULL);
|
|
}
|
|
else
|
|
pixbuf = katze_pixbuf_new_from_buffer ((guchar*)request->data,
|
|
request->length, request->mime_type, NULL);
|
|
if (pixbuf)
|
|
g_object_ref (pixbuf);
|
|
g_hash_table_insert (priv->net->memory,
|
|
g_strdup (priv->icon_file), pixbuf);
|
|
}
|
|
|
|
if (!priv->icon_cb)
|
|
{
|
|
katze_net_icon_priv_free (priv);
|
|
return;
|
|
}
|
|
|
|
if (!pixbuf)
|
|
pixbuf = gtk_widget_render_icon (priv->widget,
|
|
GTK_STOCK_FILE, GTK_ICON_SIZE_MENU, NULL);
|
|
gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &icon_width, &icon_height);
|
|
pixbuf_scaled = gdk_pixbuf_scale_simple (pixbuf, icon_width, icon_height,
|
|
GDK_INTERP_BILINEAR);
|
|
g_object_unref (pixbuf);
|
|
|
|
priv->icon_cb (pixbuf_scaled, priv->user_data);
|
|
katze_net_icon_priv_free (priv);
|
|
}
|
|
|
|
/**
|
|
* katze_net_load_icon:
|
|
* @net: a #KatzeNet
|
|
* @uri: an URI string, or %NULL
|
|
* @icon_cb: function to call upon completion
|
|
* @widget: a related #GtkWidget
|
|
* @user_data: data to pass to the callback
|
|
*
|
|
* Requests a transfer of an icon for @uri. This is
|
|
* implemented by looking for a favicon.ico, an
|
|
* image according to the file type or even a
|
|
* generated icon. The provided icon is intended
|
|
* for user interfaces and not guaranteed to be
|
|
* the same over multiple requests, plus it may
|
|
* be scaled to fit the menu icon size.
|
|
*
|
|
* The @widget is needed for theming information.
|
|
*
|
|
* The caller is expected to use the returned icon
|
|
* and update it if @icon_cb is called.
|
|
*
|
|
* Depending on whether the icon was previously
|
|
* cached or @uri is a local resource, the returned
|
|
* icon may already be the final one.
|
|
*
|
|
* Note that both the returned #GdkPixbuf and the
|
|
* icon passed to @icon_cb are newly allocated and
|
|
* the caller owns the reference.
|
|
**/
|
|
GdkPixbuf*
|
|
katze_net_load_icon (KatzeNet* net,
|
|
const gchar* uri,
|
|
KatzeNetIconCb icon_cb,
|
|
GtkWidget* widget,
|
|
gpointer user_data)
|
|
{
|
|
guint i;
|
|
KatzeNetIconPriv* priv;
|
|
gchar* icon_uri;
|
|
gchar* icon_file;
|
|
GdkPixbuf* pixbuf;
|
|
gint icon_width, icon_height;
|
|
GdkPixbuf* pixbuf_scaled;
|
|
|
|
g_return_val_if_fail (KATZE_IS_NET (net), NULL);
|
|
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
|
|
|
|
pixbuf = NULL;
|
|
if (uri && g_str_has_prefix (uri, "http://"))
|
|
{
|
|
i = 8;
|
|
while (uri[i] != '\0' && uri[i] != '/')
|
|
i++;
|
|
if (uri[i] == '/')
|
|
{
|
|
icon_uri = g_strdup (uri);
|
|
icon_uri[i] = '\0';
|
|
icon_uri = g_strdup_printf ("%s/favicon.ico", icon_uri);
|
|
}
|
|
else
|
|
icon_uri = g_strdup_printf ("%s/favicon.ico", uri);
|
|
|
|
icon_file = katze_net_get_cached_path (net, icon_uri, "icons");
|
|
|
|
if (g_hash_table_lookup_extended (net->memory,
|
|
icon_file, NULL, (gpointer)&pixbuf))
|
|
{
|
|
if (pixbuf)
|
|
g_object_ref (pixbuf);
|
|
}
|
|
else if (g_file_test (icon_file, G_FILE_TEST_EXISTS))
|
|
pixbuf = gdk_pixbuf_new_from_file (icon_file, NULL);
|
|
/* If the called doesn't provide an icon callback,
|
|
we assume there is no interest in loading an un-cached icon. */
|
|
else if (icon_cb)
|
|
{
|
|
priv = g_new0 (KatzeNetIconPriv, 1);
|
|
priv->net = net;
|
|
priv->icon_file = icon_file;
|
|
priv->icon_cb = icon_cb;
|
|
priv->widget = g_object_ref (widget);
|
|
priv->user_data = user_data;
|
|
|
|
katze_net_load_uri (net, icon_uri,
|
|
(KatzeNetStatusCb)katze_net_icon_status_cb,
|
|
(KatzeNetTransferCb)katze_net_icon_transfer_cb, priv);
|
|
}
|
|
g_free (icon_uri);
|
|
}
|
|
|
|
if (!pixbuf)
|
|
pixbuf = gtk_widget_render_icon (widget,
|
|
GTK_STOCK_FILE, GTK_ICON_SIZE_MENU, NULL);
|
|
gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &icon_width, &icon_height);
|
|
pixbuf_scaled = gdk_pixbuf_scale_simple (pixbuf, icon_width, icon_height,
|
|
GDK_INTERP_BILINEAR);
|
|
g_object_unref (pixbuf);
|
|
|
|
return pixbuf_scaled;
|
|
}
|