pidgin/pidgin

jabber: Use purple_strequal to compare possibly-null ft_proxies setting

2016-11-04, dx
c9b74a765767
jabber: Use purple_strequal to compare possibly-null ft_proxies setting

Fixes a crash when logging in to migrated accounts, introduced by 5813479c8e02.
The release-2.x.y branch isn't affected because it didn't use NULL as the
default value.

g_str_equal() isn't even intended for comparisons like this, it's a hash table
equality function.
/* purple
*
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#ifndef _PURPLE_IMAGE_H_
#define _PURPLE_IMAGE_H_
/**
* SECTION:image
* @include:image.h
* @section_id: libpurple-image
* @short_description: implementation-independent image data container
* @title: Images
*
* #PurpleImage object is a container for raw image data. It doesn't manipulate
* image data, just stores it in its binary format - png, jpeg etc. Thus, it's
* totally independent from the UI.
*
* This class also provides certain file-related features, like: friendly
* filenames (not necessarily real filename for displaying); remote images
* (which data is not yet loaded) or guessing file format from its header.
*/
#include <glib-object.h>
typedef struct _PurpleImage PurpleImage;
typedef struct _PurpleImageClass PurpleImageClass;
#define PURPLE_TYPE_IMAGE (purple_image_get_type())
#define PURPLE_IMAGE(smiley) (G_TYPE_CHECK_INSTANCE_CAST((smiley), PURPLE_TYPE_IMAGE, PurpleImage))
#define PURPLE_IMAGE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), PURPLE_TYPE_IMAGE, PurpleImageClass))
#define PURPLE_IS_IMAGE(smiley) (G_TYPE_CHECK_INSTANCE_TYPE((smiley), PURPLE_TYPE_IMAGE))
#define PURPLE_IS_IMAGE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), PURPLE_TYPE_IMAGE))
#define PURPLE_IMAGE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), PURPLE_TYPE_IMAGE, PurpleImageClass))
/**
* PurpleImage:
*
* An image data container.
*/
struct _PurpleImage
{
/*< private >*/
GObject parent;
};
/**
* PurpleImageClass:
*
* Base class for #PurpleImage objects.
*/
struct _PurpleImageClass
{
/*< private >*/
GObjectClass parent_class;
void (*purple_reserved1)(void);
void (*purple_reserved2)(void);
void (*purple_reserved3)(void);
void (*purple_reserved4)(void);
};
G_BEGIN_DECLS
/**
* purple_image_get_type:
*
* Returns: the #GType for an image.
*/
GType
purple_image_get_type(void);
/**
* purple_image_new_from_file:
* @path: the path to the image file.
* @be_eager: %TRUE, if file should be loaded now, %FALSE when needed.
*
* Loads an image file as a new #PurpleImage object. The @path must exists, be
* readable and should point to a valid image file. If you don't set @be_eager
* parameter, there will be a risk that file will be removed from disk before
* you access its data.
*
* Returns: the new #PurpleImage.
*/
PurpleImage *
purple_image_new_from_file(const gchar *path, gboolean be_eager);
/**
* purple_image_new_from_data:
* @data: the pointer to the image data buffer.
* @length: the length of @data.
*
* Creates a new #PurpleImage object with contents of @data buffer.
*
* The @data buffer is owned by #PurpleImage object, so you might want
* to #g_memdup it first.
*
* Returns: the new #PurpleImage.
*/
PurpleImage *
purple_image_new_from_data(gpointer data, gsize length);
/**
* purple_image_save:
* @image: the image.
* @path: destination of a saved image file.
*
* Saves an @image to the disk.
*
* Returns: %TRUE if succeeded, %FALSE otherwise.
*/
gboolean
purple_image_save(PurpleImage *image, const gchar *path);
/**
* purple_image_get_path:
* @image: the image.
*
* Returns the physical path of the @image file. It is set only, if the @image is
* really backed by an existing file. In the other case it returns %NULL.
*
* Returns: the physical path of the @image, or %NULL.
*/
const gchar *
purple_image_get_path(PurpleImage *image);
/**
* purple_image_is_ready:
* @image: the image.
*
* Checks, if the @image data is ready to be displayed. Remote image data may
* not be accessible at the moment, so you should check it before using
* #purple_image_get_data. If the image is not ready yet, you may wait for
* #PurpleImage::ready signal.
*
* Returns: %TRUE, if the @image is ready.
*/
gboolean
purple_image_is_ready(PurpleImage *image);
/**
* purple_image_has_failed:
* @image: the image.
*
* Checks, if the @image has failed to load its data. It can be caused either by
* a remote failure (and #purple_image_transfer_failed call) or local file being
* removed (see #purple_image_new_from_file).
*
* Returns: %TRUE, if the @image has failed to load.
*/
gboolean
purple_image_has_failed(PurpleImage *image);
/**
* purple_image_get_size:
* @image: the image.
*
* Returns the size of @image's data.
*
* Returns: the size of data, or 0 in case of failure.
*/
gsize
purple_image_get_size(PurpleImage *image);
/**
* purple_image_get_data:
* @image: the image.
*
* Returns the pointer to the buffer containing image data.
*
* Returns: (transfer none): the @image data.
*/
gconstpointer
purple_image_get_data(PurpleImage *image);
/**
* purple_image_get_extension:
* @image: the image.
*
* Guesses the @image format based on its contents.
*
* Returns: (transfer none): the file extension suitable for @image format.
*/
const gchar *
purple_image_get_extension(PurpleImage *image);
/**
* purple_image_get_mimetype:
* @image: the image.
*
* Guesses the @image mime-type based on its contents.
*
* Returns: (transfer none): the mime-type suitable for @image format.
*/
const gchar *
purple_image_get_mimetype(PurpleImage *image);
/**
* purple_image_generate_filename:
* @image: the image.
*
* Calculates almost-unique filename by computing checksum from file contents
* and appending a suitable extension. You should not assume the checksum
* is SHA-1, because it may change in the future.
*
* Returns: (transfer none): the generated file name.
*/
const gchar *
purple_image_generate_filename(PurpleImage *image);
/**
* purple_image_set_friendly_filename:
* @image: the image.
* @filename: the friendly filename.
*
* Sets the "friendly filename" for the @image. This don't have to be a real
* name, because it's used for displaying or as a default file name when the
* user wants to save the @image to the disk.
*
* The provided @filename may either be a full path, or contain
* filesystem-unfriendly characters, because it will be reformatted.
*/
void
purple_image_set_friendly_filename(PurpleImage *image, const gchar *filename);
/**
* purple_image_get_friendly_filename:
* @image: the image.
*
* Returns the "friendly filename" for the @image, to be displayed or used as
* a default name when saving a file to the disk.
* See #purple_image_set_friendly_filename.
*
* If the friendly filename was not set, it will be generated with
* #purple_image_generate_filename.
*
* Returns: (transfer none): the friendly filename.
*/
const gchar *
purple_image_get_friendly_filename(PurpleImage *image);
/**
* purple_image_transfer_new:
*
* Creates a new remote image, with a possibility to load data with
* #purple_image_transfer_write and #purple_image_transfer_close. In case of
* failure, you should call #urple_image_transfer_failed.
*
* Returns: the new image object.
*/
PurpleImage *
purple_image_transfer_new(void);
/**
* purple_image_transfer_write:
* @image: the image.
* @data: the incoming data buffer.
* @length: the length of @data.
*
* Adds a chunk of data to the internal receive buffer. Called when receiving
* a remote file.
*/
void
purple_image_transfer_write(PurpleImage *image, gconstpointer data,
gsize length);
/**
* purple_image_transfer_close:
* @image: the image.
*
* Marks a remote @image as ready to be displayed. Called when finishing
* transfer of remote file. You may call this only once for a certain @image.
*/
void
purple_image_transfer_close(PurpleImage *image);
/**
* purple_image_transfer_failed:
* @image: the image.
*
* Marks a remote @image as failed to transfer. Called on error in remote file
* transfer. You may call this only once for a certain @image.
*/
void
purple_image_transfer_failed(PurpleImage *image);
G_END_DECLS
#endif /* _PURPLE_IMAGE_H_ */